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demo工程暂存 优化菜单界面UI和功能

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Li Jie
2024-04-29 16:32:24 +08:00
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470
MCU/components/modules/lvgl/src/misc/lv_anim.c Normal file
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/**
* @file lv_anim.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_anim.h"
#include "../hal/lv_hal_tick.h"
#include "lv_assert.h"
#include "lv_timer.h"
#include "lv_math.h"
#include "lv_mem.h"
#include "lv_gc.h"
/*********************
* DEFINES
*********************/
#define LV_ANIM_RESOLUTION 1024
#define LV_ANIM_RES_SHIFT 10
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void anim_timer(lv_timer_t * param);
static void anim_mark_list_change(void);
static void anim_ready_handler(lv_anim_t * a);
/**********************
* STATIC VARIABLES
**********************/
static uint32_t last_timer_run;
static bool anim_list_changed;
static bool anim_run_round;
static lv_timer_t * _lv_anim_tmr;
/**********************
* MACROS
**********************/
#if LV_LOG_TRACE_ANIM
#define TRACE_ANIM(...) LV_LOG_TRACE(__VA_ARGS__)
#else
#define TRACE_ANIM(...)
#endif
/**********************
* GLOBAL FUNCTIONS
**********************/
void _lv_anim_core_init(void)
{
_lv_ll_init(&LV_GC_ROOT(_lv_anim_ll), sizeof(lv_anim_t));
_lv_anim_tmr = lv_timer_create(anim_timer, LV_DISP_DEF_REFR_PERIOD, NULL);
anim_mark_list_change(); /*Turn off the animation timer*/
anim_list_changed = false;
}
void lv_anim_init(lv_anim_t * a)
{
lv_memset_00(a, sizeof(lv_anim_t));
a->time = 500;
a->start_value = 0;
a->end_value = 100;
a->repeat_cnt = 1;
a->path_cb = lv_anim_path_linear;
a->early_apply = 1;
}
lv_anim_t * lv_anim_start(const lv_anim_t * a)
{
TRACE_ANIM("begin");
/*Do not let two animations for the same 'var' with the same 'exec_cb'*/
if(a->exec_cb != NULL) lv_anim_del(a->var, a->exec_cb); /*exec_cb == NULL would delete all animations of var*/
/*If the list is empty the anim timer was suspended and it's last run measure is invalid*/
if(_lv_ll_is_empty(&LV_GC_ROOT(_lv_anim_ll))) {
last_timer_run = lv_tick_get();
}
/*Add the new animation to the animation linked list*/
lv_anim_t * new_anim = _lv_ll_ins_head(&LV_GC_ROOT(_lv_anim_ll));
LV_ASSERT_MALLOC(new_anim);
if(new_anim == NULL) return NULL;
/*Initialize the animation descriptor*/
lv_memcpy(new_anim, a, sizeof(lv_anim_t));
if(a->var == a) new_anim->var = new_anim;
new_anim->run_round = anim_run_round;
/*Set the start value*/
if(new_anim->early_apply) {
if(new_anim->get_value_cb) {
int32_t v_ofs = new_anim->get_value_cb(new_anim);
new_anim->start_value += v_ofs;
new_anim->end_value += v_ofs;
}
if(new_anim->exec_cb && new_anim->var) new_anim->exec_cb(new_anim->var, new_anim->start_value);
}
/*Creating an animation changed the linked list.
*It's important if it happens in a ready callback. (see `anim_timer`)*/
anim_mark_list_change();
TRACE_ANIM("finished");
return new_anim;
}
uint32_t lv_anim_get_playtime(lv_anim_t * a)
{
uint32_t playtime = LV_ANIM_PLAYTIME_INFINITE;
if(a->repeat_cnt == LV_ANIM_REPEAT_INFINITE)
return playtime;
playtime = a->time - a->act_time;
if(a->playback_now == 0)
playtime += a->playback_delay + a->playback_time;
if(a->repeat_cnt <= 1)
return playtime;
playtime += (a->repeat_delay + a->time +
a->playback_delay + a->playback_time) *
(a->repeat_cnt - 1);
return playtime;
}
bool lv_anim_del(void * var, lv_anim_exec_xcb_t exec_cb)
{
lv_anim_t * a;
lv_anim_t * a_next;
bool del = false;
a = _lv_ll_get_head(&LV_GC_ROOT(_lv_anim_ll));
while(a != NULL) {
/*'a' might be deleted, so get the next object while 'a' is valid*/
a_next = _lv_ll_get_next(&LV_GC_ROOT(_lv_anim_ll), a);
if((a->var == var || var == NULL) && (a->exec_cb == exec_cb || exec_cb == NULL)) {
_lv_ll_remove(&LV_GC_ROOT(_lv_anim_ll), a);
if(a->deleted_cb != NULL) a->deleted_cb(a);
lv_mem_free(a);
anim_mark_list_change(); /*Read by `anim_timer`. It need to know if a delete occurred in
the linked list*/
del = true;
}
a = a_next;
}
return del;
}
void lv_anim_del_all(void)
{
_lv_ll_clear(&LV_GC_ROOT(_lv_anim_ll));
anim_mark_list_change();
}
lv_anim_t * lv_anim_get(void * var, lv_anim_exec_xcb_t exec_cb)
{
lv_anim_t * a;
_LV_LL_READ(&LV_GC_ROOT(_lv_anim_ll), a) {
if(a->var == var && (a->exec_cb == exec_cb || exec_cb == NULL)) {
return a;
}
}
return NULL;
}
struct _lv_timer_t * lv_anim_get_timer(void)
{
return _lv_anim_tmr;
}
uint16_t lv_anim_count_running(void)
{
uint16_t cnt = 0;
lv_anim_t * a;
_LV_LL_READ(&LV_GC_ROOT(_lv_anim_ll), a) cnt++;
return cnt;
}
uint32_t lv_anim_speed_to_time(uint32_t speed, int32_t start, int32_t end)
{
uint32_t d = LV_ABS(start - end);
uint32_t time = (d * 1000) / speed;
if(time == 0) {
time++;
}
return time;
}
void lv_anim_refr_now(void)
{
anim_timer(NULL);
}
int32_t lv_anim_path_linear(const lv_anim_t * a)
{
/*Calculate the current step*/
int32_t step = lv_map(a->act_time, 0, a->time, 0, LV_ANIM_RESOLUTION);
/*Get the new value which will be proportional to `step`
*and the `start` and `end` values*/
int32_t new_value;
new_value = step * (a->end_value - a->start_value);
new_value = new_value >> LV_ANIM_RES_SHIFT;
new_value += a->start_value;
return new_value;
}
int32_t lv_anim_path_ease_in(const lv_anim_t * a)
{
/*Calculate the current step*/
uint32_t t = lv_map(a->act_time, 0, a->time, 0, LV_BEZIER_VAL_MAX);
int32_t step = lv_bezier3(t, 0, 50, 100, LV_BEZIER_VAL_MAX);
int32_t new_value;
new_value = step * (a->end_value - a->start_value);
new_value = new_value >> LV_BEZIER_VAL_SHIFT;
new_value += a->start_value;
return new_value;
}
int32_t lv_anim_path_ease_out(const lv_anim_t * a)
{
/*Calculate the current step*/
uint32_t t = lv_map(a->act_time, 0, a->time, 0, LV_BEZIER_VAL_MAX);
int32_t step = lv_bezier3(t, 0, 900, 950, LV_BEZIER_VAL_MAX);
int32_t new_value;
new_value = step * (a->end_value - a->start_value);
new_value = new_value >> LV_BEZIER_VAL_SHIFT;
new_value += a->start_value;
return new_value;
}
int32_t lv_anim_path_ease_in_out(const lv_anim_t * a)
{
/*Calculate the current step*/
uint32_t t = lv_map(a->act_time, 0, a->time, 0, LV_BEZIER_VAL_MAX);
int32_t step = lv_bezier3(t, 0, 50, 952, LV_BEZIER_VAL_MAX);
int32_t new_value;
new_value = step * (a->end_value - a->start_value);
new_value = new_value >> LV_BEZIER_VAL_SHIFT;
new_value += a->start_value;
return new_value;
}
int32_t lv_anim_path_overshoot(const lv_anim_t * a)
{
/*Calculate the current step*/
uint32_t t = lv_map(a->act_time, 0, a->time, 0, LV_BEZIER_VAL_MAX);
int32_t step = lv_bezier3(t, 0, 1000, 1300, LV_BEZIER_VAL_MAX);
int32_t new_value;
new_value = step * (a->end_value - a->start_value);
new_value = new_value >> LV_BEZIER_VAL_SHIFT;
new_value += a->start_value;
return new_value;
}
int32_t lv_anim_path_bounce(const lv_anim_t * a)
{
/*Calculate the current step*/
int32_t t = lv_map(a->act_time, 0, a->time, 0, LV_BEZIER_VAL_MAX);
int32_t diff = (a->end_value - a->start_value);
/*3 bounces has 5 parts: 3 down and 2 up. One part is t / 5 long*/
if(t < 408) {
/*Go down*/
t = (t * 2500) >> LV_BEZIER_VAL_SHIFT; /*[0..1024] range*/
}
else if(t >= 408 && t < 614) {
/*First bounce back*/
t -= 408;
t = t * 5; /*to [0..1024] range*/
t = LV_BEZIER_VAL_MAX - t;
diff = diff / 20;
}
else if(t >= 614 && t < 819) {
/*Fall back*/
t -= 614;
t = t * 5; /*to [0..1024] range*/
diff = diff / 20;
}
else if(t >= 819 && t < 921) {
/*Second bounce back*/
t -= 819;
t = t * 10; /*to [0..1024] range*/
t = LV_BEZIER_VAL_MAX - t;
diff = diff / 40;
}
else if(t >= 921 && t <= LV_BEZIER_VAL_MAX) {
/*Fall back*/
t -= 921;
t = t * 10; /*to [0..1024] range*/
diff = diff / 40;
}
if(t > LV_BEZIER_VAL_MAX) t = LV_BEZIER_VAL_MAX;
if(t < 0) t = 0;
int32_t step = lv_bezier3(t, LV_BEZIER_VAL_MAX, 800, 500, 0);
int32_t new_value;
new_value = step * diff;
new_value = new_value >> LV_BEZIER_VAL_SHIFT;
new_value = a->end_value - new_value;
return new_value;
}
int32_t lv_anim_path_step(const lv_anim_t * a)
{
if(a->act_time >= a->time)
return a->end_value;
else
return a->start_value;
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Periodically handle the animations.
* @param param unused
*/
static void anim_timer(lv_timer_t * param)
{
LV_UNUSED(param);
uint32_t elaps = lv_tick_elaps(last_timer_run);
/*Flip the run round*/
anim_run_round = anim_run_round ? false : true;
lv_anim_t * a = _lv_ll_get_head(&LV_GC_ROOT(_lv_anim_ll));
while(a != NULL) {
/*It can be set by `lv_anim_del()` typically in `end_cb`. If set then an animation delete
* happened in `anim_ready_handler` which could make this linked list reading corrupt
* because the list is changed meanwhile
*/
anim_list_changed = false;
if(a->run_round != anim_run_round) {
a->run_round = anim_run_round; /*The list readying might be reset so need to know which anim has run already*/
/*The animation will run now for the first time. Call `start_cb`*/
int32_t new_act_time = a->act_time + elaps;
if(!a->start_cb_called && a->act_time <= 0 && new_act_time >= 0) {
if(a->early_apply == 0 && a->get_value_cb) {
int32_t v_ofs = a->get_value_cb(a);
a->start_value += v_ofs;
a->end_value += v_ofs;
}
if(a->start_cb) a->start_cb(a);
a->start_cb_called = 1;
}
a->act_time += elaps;
if(a->act_time >= 0) {
if(a->act_time > a->time) a->act_time = a->time;
int32_t new_value;
new_value = a->path_cb(a);
if(new_value != a->current_value) {
a->current_value = new_value;
/*Apply the calculated value*/
if(a->exec_cb) a->exec_cb(a->var, new_value);
}
/*If the time is elapsed the animation is ready*/
if(a->act_time >= a->time) {
anim_ready_handler(a);
}
}
}
/*If the linked list changed due to anim. delete then it's not safe to continue
*the reading of the list from here -> start from the head*/
if(anim_list_changed)
a = _lv_ll_get_head(&LV_GC_ROOT(_lv_anim_ll));
else
a = _lv_ll_get_next(&LV_GC_ROOT(_lv_anim_ll), a);
}
last_timer_run = lv_tick_get();
}
/**
* Called when an animation is ready to do the necessary thinks
* e.g. repeat, play back, delete etc.
* @param a pointer to an animation descriptor
*/
static void anim_ready_handler(lv_anim_t * a)
{
/*In the end of a forward anim decrement repeat cnt.*/
if(a->playback_now == 0 && a->repeat_cnt > 0 && a->repeat_cnt != LV_ANIM_REPEAT_INFINITE) {
a->repeat_cnt--;
}
/*Delete the animation if
* - no repeat left and no play back (simple one shot animation)
* - no repeat, play back is enabled and play back is ready*/
if(a->repeat_cnt == 0 && (a->playback_time == 0 || a->playback_now == 1)) {
/*Delete the animation from the list.
* This way the `ready_cb` will see the animations like it's animation is ready deleted*/
_lv_ll_remove(&LV_GC_ROOT(_lv_anim_ll), a);
/*Flag that the list has changed*/
anim_mark_list_change();
/*Call the callback function at the end*/
if(a->ready_cb != NULL) a->ready_cb(a);
if(a->deleted_cb != NULL) a->deleted_cb(a);
lv_mem_free(a);
}
/*If the animation is not deleted then restart it*/
else {
a->act_time = -(int32_t)(a->repeat_delay); /*Restart the animation*/
/*Swap the start and end values in play back mode*/
if(a->playback_time != 0) {
/*If now turning back use the 'playback_pause*/
if(a->playback_now == 0) a->act_time = -(int32_t)(a->playback_delay);
/*Toggle the play back state*/
a->playback_now = a->playback_now == 0 ? 1 : 0;
/*Swap the start and end values*/
int32_t tmp = a->start_value;
a->start_value = a->end_value;
a->end_value = tmp;
/*Swap the time and playback_time*/
tmp = a->time;
a->time = a->playback_time;
a->playback_time = tmp;
}
}
}
static void anim_mark_list_change(void)
{
anim_list_changed = true;
if(_lv_ll_get_head(&LV_GC_ROOT(_lv_anim_ll)) == NULL)
lv_timer_pause(_lv_anim_tmr);
else
lv_timer_resume(_lv_anim_tmr);
}

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MCU/components/modules/lvgl/src/misc/lv_anim.h Normal file
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/**
* @file lv_anim.h
*
*/
#ifndef LV_ANIM_H
#define LV_ANIM_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
/*********************
* DEFINES
*********************/
#define LV_ANIM_REPEAT_INFINITE 0xFFFF
#define LV_ANIM_PLAYTIME_INFINITE 0xFFFFFFFF
LV_EXPORT_CONST_INT(LV_ANIM_REPEAT_INFINITE);
LV_EXPORT_CONST_INT(LV_ANIM_PLAYTIME_INFINITE);
/**********************
* TYPEDEFS
**********************/
/** Can be used to indicate if animations are enabled or disabled in a case*/
typedef enum {
LV_ANIM_OFF,
LV_ANIM_ON,
} lv_anim_enable_t;
struct _lv_anim_t;
struct _lv_timer_t;
/** Get the current value during an animation*/
typedef int32_t (*lv_anim_path_cb_t)(const struct _lv_anim_t *);
/** Generic prototype of "animator" functions.
* First parameter is the variable to animate.
* Second parameter is the value to set.
* Compatible with `lv_xxx_set_yyy(obj, value)` functions
* The `x` in `_xcb_t` means it's not a fully generic prototype because
* it doesn't receive `lv_anim_t *` as its first argument*/
typedef void (*lv_anim_exec_xcb_t)(void *, int32_t);
/** Same as `lv_anim_exec_xcb_t` but receives `lv_anim_t *` as the first parameter.
* It's more consistent but less convenient. Might be used by binding generator functions.*/
typedef void (*lv_anim_custom_exec_cb_t)(struct _lv_anim_t *, int32_t);
/** Callback to call when the animation is ready*/
typedef void (*lv_anim_ready_cb_t)(struct _lv_anim_t *);
/** Callback to call when the animation really stars (considering `delay`)*/
typedef void (*lv_anim_start_cb_t)(struct _lv_anim_t *);
/** Callback used when the animation values are relative to get the current value*/
typedef int32_t (*lv_anim_get_value_cb_t)(struct _lv_anim_t *);
/** Callback used when the animation is deleted*/
typedef void (*lv_anim_deleted_cb_t)(struct _lv_anim_t *);
/** Describes an animation*/
typedef struct _lv_anim_t {
void * var; /**<Variable to animate*/
lv_anim_exec_xcb_t exec_cb; /**< Function to execute to animate*/
lv_anim_start_cb_t start_cb; /**< Call it when the animation is starts (considering `delay`)*/
lv_anim_ready_cb_t ready_cb; /**< Call it when the animation is ready*/
lv_anim_deleted_cb_t deleted_cb; /**< Call it when the animation is deleted*/
lv_anim_get_value_cb_t get_value_cb; /**< Get the current value in relative mode*/
#if LV_USE_USER_DATA
void * user_data; /**< Custom user data*/
#endif
lv_anim_path_cb_t path_cb; /**< Describe the path (curve) of animations*/
int32_t start_value; /**< Start value*/
int32_t current_value; /**< Current value*/
int32_t end_value; /**< End value*/
int32_t time; /**< Animation time in ms*/
int32_t act_time; /**< Current time in animation. Set to negative to make delay.*/
uint32_t playback_delay; /**< Wait before play back*/
uint32_t playback_time; /**< Duration of playback animation*/
uint32_t repeat_delay; /**< Wait before repeat*/
uint16_t repeat_cnt; /**< Repeat count for the animation*/
uint8_t early_apply : 1; /**< 1: Apply start value immediately even is there is `delay`*/
/*Animation system use these - user shouldn't set*/
uint8_t playback_now : 1; /**< Play back is in progress*/
uint8_t run_round : 1; /**< Indicates the animation has run in this round*/
uint8_t start_cb_called : 1; /**< Indicates that the `start_cb` was already called*/
} lv_anim_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Init. the animation module
*/
void _lv_anim_core_init(void);
/**
* Initialize an animation variable.
* E.g.:
* lv_anim_t a;
* lv_anim_init(&a);
* lv_anim_set_...(&a);
* lv_anim_start(&a);
* @param a pointer to an `lv_anim_t` variable to initialize
*/
void lv_anim_init(lv_anim_t * a);
/**
* Set a variable to animate
* @param a pointer to an initialized `lv_anim_t` variable
* @param var pointer to a variable to animate
*/
static inline void lv_anim_set_var(lv_anim_t * a, void * var)
{
a->var = var;
}
/**
* Set a function to animate `var`
* @param a pointer to an initialized `lv_anim_t` variable
* @param exec_cb a function to execute during animation
* LVGL's built-in functions can be used.
* E.g. lv_obj_set_x
*/
static inline void lv_anim_set_exec_cb(lv_anim_t * a, lv_anim_exec_xcb_t exec_cb)
{
a->exec_cb = exec_cb;
}
/**
* Set the duration of an animation
* @param a pointer to an initialized `lv_anim_t` variable
* @param duration duration of the animation in milliseconds
*/
static inline void lv_anim_set_time(lv_anim_t * a, uint32_t duration)
{
a->time = duration;
}
/**
* Set a delay before starting the animation
* @param a pointer to an initialized `lv_anim_t` variable
* @param delay delay before the animation in milliseconds
*/
static inline void lv_anim_set_delay(lv_anim_t * a, uint32_t delay)
{
a->act_time = -(int32_t)(delay);
}
/**
* Set the start and end values of an animation
* @param a pointer to an initialized `lv_anim_t` variable
* @param start the start value
* @param end the end value
*/
static inline void lv_anim_set_values(lv_anim_t * a, int32_t start, int32_t end)
{
a->start_value = start;
a->current_value = start;
a->end_value = end;
}
/**
* Similar to `lv_anim_set_exec_cb` but `lv_anim_custom_exec_cb_t` receives
* `lv_anim_t * ` as its first parameter instead of `void *`.
* This function might be used when LVGL is bound to other languages because
* it's more consistent to have `lv_anim_t *` as first parameter.
* The variable to animate can be stored in the animation's `user_data`
* @param a pointer to an initialized `lv_anim_t` variable
* @param exec_cb a function to execute.
*/
static inline void lv_anim_set_custom_exec_cb(lv_anim_t * a, lv_anim_custom_exec_cb_t exec_cb)
{
a->var = a;
a->exec_cb = (lv_anim_exec_xcb_t)exec_cb;
}
/**
* Set the path (curve) of the animation.
* @param a pointer to an initialized `lv_anim_t` variable
* @param path_cb a function to set the current value of the animation.
*/
static inline void lv_anim_set_path_cb(lv_anim_t * a, lv_anim_path_cb_t path_cb)
{
a->path_cb = path_cb;
}
/**
* Set a function call when the animation really starts (considering `delay`)
* @param a pointer to an initialized `lv_anim_t` variable
* @param start_cb a function call when the animation starts
*/
static inline void lv_anim_set_start_cb(lv_anim_t * a, lv_anim_start_cb_t start_cb)
{
a->start_cb = start_cb;
}
/**
* Set a function to use the current value of the variable and make start and end value
* relative to the returned current value.
* @param a pointer to an initialized `lv_anim_t` variable
* @param get_value_cb a function call when the animation starts
*/
static inline void lv_anim_set_get_value_cb(lv_anim_t * a, lv_anim_get_value_cb_t get_value_cb)
{
a->get_value_cb = get_value_cb;
}
/**
* Set a function call when the animation is ready
* @param a pointer to an initialized `lv_anim_t` variable
* @param ready_cb a function call when the animation is ready
*/
static inline void lv_anim_set_ready_cb(lv_anim_t * a, lv_anim_ready_cb_t ready_cb)
{
a->ready_cb = ready_cb;
}
/**
* Set a function call when the animation is deleted.
* @param a pointer to an initialized `lv_anim_t` variable
* @param deleted_cb a function call when the animation is deleted
*/
static inline void lv_anim_set_deleted_cb(lv_anim_t * a, lv_anim_deleted_cb_t deleted_cb)
{
a->deleted_cb = deleted_cb;
}
/**
* Make the animation to play back to when the forward direction is ready
* @param a pointer to an initialized `lv_anim_t` variable
* @param time the duration of the playback animation in milliseconds. 0: disable playback
*/
static inline void lv_anim_set_playback_time(lv_anim_t * a, uint32_t time)
{
a->playback_time = time;
}
/**
* Make the animation to play back to when the forward direction is ready
* @param a pointer to an initialized `lv_anim_t` variable
* @param delay delay in milliseconds before starting the playback animation.
*/
static inline void lv_anim_set_playback_delay(lv_anim_t * a, uint32_t delay)
{
a->playback_delay = delay;
}
/**
* Make the animation repeat itself.
* @param a pointer to an initialized `lv_anim_t` variable
* @param cnt repeat count or `LV_ANIM_REPEAT_INFINITE` for infinite repetition. 0: to disable repetition.
*/
static inline void lv_anim_set_repeat_count(lv_anim_t * a, uint16_t cnt)
{
a->repeat_cnt = cnt;
}
/**
* Set a delay before repeating the animation.
* @param a pointer to an initialized `lv_anim_t` variable
* @param delay delay in milliseconds before repeating the animation.
*/
static inline void lv_anim_set_repeat_delay(lv_anim_t * a, uint32_t delay)
{
a->repeat_delay = delay;
}
/**
* Set a whether the animation's should be applied immediately or only when the delay expired.
* @param a pointer to an initialized `lv_anim_t` variable
* @param en true: apply the start value immediately in `lv_anim_start`;
* false: apply the start value only when `delay` ms is elapsed and the animations really starts
*/
static inline void lv_anim_set_early_apply(lv_anim_t * a, bool en)
{
a->early_apply = en;
}
/**
* Set the custom user data field of the animation.
* @param a pointer to an initialized `lv_anim_t` variable
* @param user_data pointer to the new user_data.
*/
#if LV_USE_USER_DATA
static inline void lv_anim_set_user_data(lv_anim_t * a, void * user_data)
{
a->user_data = user_data;
}
#endif
/**
* Create an animation
* @param a an initialized 'anim_t' variable. Not required after call.
* @return pointer to the created animation (different from the `a` parameter)
*/
lv_anim_t * lv_anim_start(const lv_anim_t * a);
/**
* Get a delay before starting the animation
* @param a pointer to an initialized `lv_anim_t` variable
* @return delay before the animation in milliseconds
*/
static inline uint32_t lv_anim_get_delay(lv_anim_t * a)
{
return -a->act_time;
}
/**
* Get the time used to play the animation.
* @param a pointer to an animation.
* @return the play time in milliseconds.
*/
uint32_t lv_anim_get_playtime(lv_anim_t * a);
/**
* Get the user_data field of the animation
* @param a pointer to an initialized `lv_anim_t` variable
* @return the pointer to the custom user_data of the animation
*/
#if LV_USE_USER_DATA
static inline void * lv_anim_get_user_data(lv_anim_t * a)
{
return a->user_data;
}
#endif
/**
* Delete an animation of a variable with a given animator function
* @param var pointer to variable
* @param exec_cb a function pointer which is animating 'var',
* or NULL to ignore it and delete all the animations of 'var
* @return true: at least 1 animation is deleted, false: no animation is deleted
*/
bool lv_anim_del(void * var, lv_anim_exec_xcb_t exec_cb);
/**
* Delete all the animations
*/
void lv_anim_del_all(void);
/**
* Get the animation of a variable and its `exec_cb`.
* @param var pointer to variable
* @param exec_cb a function pointer which is animating 'var', or NULL to return first matching 'var'
* @return pointer to the animation.
*/
lv_anim_t * lv_anim_get(void * var, lv_anim_exec_xcb_t exec_cb);
/**
* Get global animation refresher timer.
* @return pointer to the animation refresher timer.
*/
struct _lv_timer_t * lv_anim_get_timer(void);
/**
* Delete an animation by getting the animated variable from `a`.
* Only animations with `exec_cb` will be deleted.
* This function exists because it's logical that all anim. functions receives an
* `lv_anim_t` as their first parameter. It's not practical in C but might make
* the API more consequent and makes easier to generate bindings.
* @param a pointer to an animation.
* @param exec_cb a function pointer which is animating 'var',
* or NULL to ignore it and delete all the animations of 'var
* @return true: at least 1 animation is deleted, false: no animation is deleted
*/
static inline bool lv_anim_custom_del(lv_anim_t * a, lv_anim_custom_exec_cb_t exec_cb)
{
return lv_anim_del(a ? a->var : NULL, (lv_anim_exec_xcb_t)exec_cb);
}
/**
* Get the animation of a variable and its `exec_cb`.
* This function exists because it's logical that all anim. functions receives an
* `lv_anim_t` as their first parameter. It's not practical in C but might make
* the API more consequent and makes easier to generate bindings.
* @param a pointer to an animation.
* @param exec_cb a function pointer which is animating 'var', or NULL to return first matching 'var'
* @return pointer to the animation.
*/
static inline lv_anim_t * lv_anim_custom_get(lv_anim_t * a, lv_anim_custom_exec_cb_t exec_cb)
{
return lv_anim_get(a ? a->var : NULL, (lv_anim_exec_xcb_t)exec_cb);
}
/**
* Get the number of currently running animations
* @return the number of running animations
*/
uint16_t lv_anim_count_running(void);
/**
* Calculate the time of an animation with a given speed and the start and end values
* @param speed speed of animation in unit/sec
* @param start start value of the animation
* @param end end value of the animation
* @return the required time [ms] for the animation with the given parameters
*/
uint32_t lv_anim_speed_to_time(uint32_t speed, int32_t start, int32_t end);
/**
* Manually refresh the state of the animations.
* Useful to make the animations running in a blocking process where
* `lv_timer_handler` can't run for a while.
* Shouldn't be used directly because it is called in `lv_refr_now()`.
*/
void lv_anim_refr_now(void);
/**
* Calculate the current value of an animation applying linear characteristic
* @param a pointer to an animation
* @return the current value to set
*/
int32_t lv_anim_path_linear(const lv_anim_t * a);
/**
* Calculate the current value of an animation slowing down the start phase
* @param a pointer to an animation
* @return the current value to set
*/
int32_t lv_anim_path_ease_in(const lv_anim_t * a);
/**
* Calculate the current value of an animation slowing down the end phase
* @param a pointer to an animation
* @return the current value to set
*/
int32_t lv_anim_path_ease_out(const lv_anim_t * a);
/**
* Calculate the current value of an animation applying an "S" characteristic (cosine)
* @param a pointer to an animation
* @return the current value to set
*/
int32_t lv_anim_path_ease_in_out(const lv_anim_t * a);
/**
* Calculate the current value of an animation with overshoot at the end
* @param a pointer to an animation
* @return the current value to set
*/
int32_t lv_anim_path_overshoot(const lv_anim_t * a);
/**
* Calculate the current value of an animation with 3 bounces
* @param a pointer to an animation
* @return the current value to set
*/
int32_t lv_anim_path_bounce(const lv_anim_t * a);
/**
* Calculate the current value of an animation applying step characteristic.
* (Set end value on the end of the animation)
* @param a pointer to an animation
* @return the current value to set
*/
int32_t lv_anim_path_step(const lv_anim_t * a);
/**********************
* GLOBAL VARIABLES
**********************/
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_ANIM_H*/

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/**
* @file lv_anim_timeline.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_anim_timeline.h"
#include "lv_mem.h"
#include "lv_assert.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/*Data of anim_timeline_dsc*/
typedef struct {
lv_anim_t anim;
uint32_t start_time;
} lv_anim_timeline_dsc_t;
/*Data of anim_timeline*/
struct _lv_anim_timeline_t {
lv_anim_timeline_dsc_t * anim_dsc; /**< Dynamically allocated anim dsc array*/
uint32_t anim_dsc_cnt; /**< The length of anim dsc array*/
bool reverse; /**< Reverse playback*/
};
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_anim_timeline_virtual_exec_cb(void * var, int32_t v);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_anim_timeline_t * lv_anim_timeline_create(void)
{
lv_anim_timeline_t * at = (lv_anim_timeline_t *)lv_mem_alloc(sizeof(lv_anim_timeline_t));
LV_ASSERT_MALLOC(at);
if(at) lv_memset_00(at, sizeof(lv_anim_timeline_t));
return at;
}
void lv_anim_timeline_del(lv_anim_timeline_t * at)
{
LV_ASSERT_NULL(at);
lv_anim_timeline_stop(at);
lv_mem_free(at->anim_dsc);
lv_mem_free(at);
}
void lv_anim_timeline_add(lv_anim_timeline_t * at, uint32_t start_time, lv_anim_t * a)
{
LV_ASSERT_NULL(at);
at->anim_dsc_cnt++;
at->anim_dsc = lv_mem_realloc(at->anim_dsc, at->anim_dsc_cnt * sizeof(lv_anim_timeline_dsc_t));
LV_ASSERT_MALLOC(at->anim_dsc);
at->anim_dsc[at->anim_dsc_cnt - 1].anim = *a;
at->anim_dsc[at->anim_dsc_cnt - 1].start_time = start_time;
/*Add default var and virtual exec_cb, used to delete animation.*/
if(a->var == NULL && a->exec_cb == NULL) {
at->anim_dsc[at->anim_dsc_cnt - 1].anim.var = at;
at->anim_dsc[at->anim_dsc_cnt - 1].anim.exec_cb = lv_anim_timeline_virtual_exec_cb;
}
}
uint32_t lv_anim_timeline_start(lv_anim_timeline_t * at)
{
LV_ASSERT_NULL(at);
const uint32_t playtime = lv_anim_timeline_get_playtime(at);
bool reverse = at->reverse;
for(uint32_t i = 0; i < at->anim_dsc_cnt; i++) {
lv_anim_t a = at->anim_dsc[i].anim;
uint32_t start_time = at->anim_dsc[i].start_time;
if(reverse) {
int32_t temp = a.start_value;
a.start_value = a.end_value;
a.end_value = temp;
lv_anim_set_delay(&a, playtime - (start_time + a.time));
}
else {
lv_anim_set_delay(&a, start_time);
}
lv_anim_start(&a);
}
return playtime;
}
void lv_anim_timeline_stop(lv_anim_timeline_t * at)
{
LV_ASSERT_NULL(at);
for(uint32_t i = 0; i < at->anim_dsc_cnt; i++) {
lv_anim_t * a = &(at->anim_dsc[i].anim);
lv_anim_del(a->var, a->exec_cb);
}
}
void lv_anim_timeline_set_reverse(lv_anim_timeline_t * at, bool reverse)
{
LV_ASSERT_NULL(at);
at->reverse = reverse;
}
void lv_anim_timeline_set_progress(lv_anim_timeline_t * at, uint16_t progress)
{
LV_ASSERT_NULL(at);
const uint32_t playtime = lv_anim_timeline_get_playtime(at);
const uint32_t act_time = progress * playtime / 0xFFFF;
for(uint32_t i = 0; i < at->anim_dsc_cnt; i++) {
lv_anim_t * a = &(at->anim_dsc[i].anim);
if(a->exec_cb == NULL) {
continue;
}
uint32_t start_time = at->anim_dsc[i].start_time;
int32_t value = 0;
if(act_time < start_time) {
value = a->start_value;
}
else if(act_time < (start_time + a->time)) {
a->act_time = act_time - start_time;
value = a->path_cb(a);
}
else {
value = a->end_value;
}
a->exec_cb(a->var, value);
}
}
uint32_t lv_anim_timeline_get_playtime(lv_anim_timeline_t * at)
{
LV_ASSERT_NULL(at);
uint32_t playtime = 0;
for(uint32_t i = 0; i < at->anim_dsc_cnt; i++) {
uint32_t end = lv_anim_get_playtime(&at->anim_dsc[i].anim);
if(end == LV_ANIM_PLAYTIME_INFINITE)
return end;
end += at->anim_dsc[i].start_time;
if(end > playtime) {
playtime = end;
}
}
return playtime;
}
bool lv_anim_timeline_get_reverse(lv_anim_timeline_t * at)
{
LV_ASSERT_NULL(at);
return at->reverse;
}
/**********************
* STATIC FUNCTIONS
**********************/
static void lv_anim_timeline_virtual_exec_cb(void * var, int32_t v)
{
LV_UNUSED(var);
LV_UNUSED(v);
}

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/**
* @file lv_anim_timeline.h
*
*/
#ifndef LV_ANIM_TIMELINE_H
#define LV_ANIM_TIMELINE_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lv_anim.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
struct _lv_anim_timeline_t;
typedef struct _lv_anim_timeline_t lv_anim_timeline_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Create an animation timeline.
* @return pointer to the animation timeline.
*/
lv_anim_timeline_t * lv_anim_timeline_create(void);
/**
* Delete animation timeline.
* @param at pointer to the animation timeline.
*/
void lv_anim_timeline_del(lv_anim_timeline_t * at);
/**
* Add animation to the animation timeline.
* @param at pointer to the animation timeline.
* @param start_time the time the animation started on the timeline, note that start_time will override the value of delay.
* @param a pointer to an animation.
*/
void lv_anim_timeline_add(lv_anim_timeline_t * at, uint32_t start_time, lv_anim_t * a);
/**
* Start the animation timeline.
* @param at pointer to the animation timeline.
* @return total time spent in animation timeline.
*/
uint32_t lv_anim_timeline_start(lv_anim_timeline_t * at);
/**
* Stop the animation timeline.
* @param at pointer to the animation timeline.
*/
void lv_anim_timeline_stop(lv_anim_timeline_t * at);
/**
* Set the playback direction of the animation timeline.
* @param at pointer to the animation timeline.
* @param reverse whether to play in reverse.
*/
void lv_anim_timeline_set_reverse(lv_anim_timeline_t * at, bool reverse);
/**
* Set the progress of the animation timeline.
* @param at pointer to the animation timeline.
* @param progress set value 0~65535 to map 0~100% animation progress.
*/
void lv_anim_timeline_set_progress(lv_anim_timeline_t * at, uint16_t progress);
/**
* Get the time used to play the animation timeline.
* @param at pointer to the animation timeline.
* @return total time spent in animation timeline.
*/
uint32_t lv_anim_timeline_get_playtime(lv_anim_timeline_t * at);
/**
* Get whether the animation timeline is played in reverse.
* @param at pointer to the animation timeline.
* @return return true if it is reverse playback.
*/
bool lv_anim_timeline_get_reverse(lv_anim_timeline_t * at);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_ANIM_TIMELINE_H*/

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/**
* @file lv_area.c
*
*/
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include "lv_area.h"
#include "lv_math.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static bool lv_point_within_circle(const lv_area_t * area, const lv_point_t * p);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize an area
* @param area_p pointer to an area
* @param x1 left coordinate of the area
* @param y1 top coordinate of the area
* @param x2 right coordinate of the area
* @param y2 bottom coordinate of the area
*/
void lv_area_set(lv_area_t * area_p, lv_coord_t x1, lv_coord_t y1, lv_coord_t x2, lv_coord_t y2)
{
area_p->x1 = x1;
area_p->y1 = y1;
area_p->x2 = x2;
area_p->y2 = y2;
}
/**
* Set the width of an area
* @param area_p pointer to an area
* @param w the new width of the area (w == 1 makes x1 == x2)
*/
void lv_area_set_width(lv_area_t * area_p, lv_coord_t w)
{
area_p->x2 = area_p->x1 + w - 1;
}
/**
* Set the height of an area
* @param area_p pointer to an area
* @param h the new height of the area (h == 1 makes y1 == y2)
*/
void lv_area_set_height(lv_area_t * area_p, lv_coord_t h)
{
area_p->y2 = area_p->y1 + h - 1;
}
/**
* Set the position of an area (width and height will be kept)
* @param area_p pointer to an area
* @param x the new x coordinate of the area
* @param y the new y coordinate of the area
*/
void _lv_area_set_pos(lv_area_t * area_p, lv_coord_t x, lv_coord_t y)
{
lv_coord_t w = lv_area_get_width(area_p);
lv_coord_t h = lv_area_get_height(area_p);
area_p->x1 = x;
area_p->y1 = y;
lv_area_set_width(area_p, w);
lv_area_set_height(area_p, h);
}
/**
* Return with area of an area (x * y)
* @param area_p pointer to an area
* @return size of area
*/
uint32_t lv_area_get_size(const lv_area_t * area_p)
{
uint32_t size;
size = (uint32_t)(area_p->x2 - area_p->x1 + 1) * (area_p->y2 - area_p->y1 + 1);
return size;
}
void lv_area_increase(lv_area_t * area, lv_coord_t w_extra, lv_coord_t h_extra)
{
area->x1 -= w_extra;
area->x2 += w_extra;
area->y1 -= h_extra;
area->y2 += h_extra;
}
LV_IMG_FAST_MEM void lv_area_move(lv_area_t * area, lv_coord_t x_ofs, lv_coord_t y_ofs)
{
area->x1 += x_ofs;
area->x2 += x_ofs;
area->y1 += y_ofs;
area->y2 += y_ofs;
}
/**
* Get the common parts of two areas
* @param res_p pointer to an area, the result will be stored here
* @param a1_p pointer to the first area
* @param a2_p pointer to the second area
* @return false: the two area has NO common parts, res_p is invalid
*/
bool _lv_area_intersect(lv_area_t * res_p, const lv_area_t * a1_p, const lv_area_t * a2_p)
{
/*Get the smaller area from 'a1_p' and 'a2_p'*/
res_p->x1 = LV_MAX(a1_p->x1, a2_p->x1);
res_p->y1 = LV_MAX(a1_p->y1, a2_p->y1);
res_p->x2 = LV_MIN(a1_p->x2, a2_p->x2);
res_p->y2 = LV_MIN(a1_p->y2, a2_p->y2);
/*If x1 or y1 greater than x2 or y2 then the areas union is empty*/
bool union_ok = true;
if((res_p->x1 > res_p->x2) || (res_p->y1 > res_p->y2)) {
union_ok = false;
}
return union_ok;
}
/**
* Join two areas into a third which involves the other two
* @param res_p pointer to an area, the result will be stored here
* @param a1_p pointer to the first area
* @param a2_p pointer to the second area
*/
void _lv_area_join(lv_area_t * a_res_p, const lv_area_t * a1_p, const lv_area_t * a2_p)
{
a_res_p->x1 = LV_MIN(a1_p->x1, a2_p->x1);
a_res_p->y1 = LV_MIN(a1_p->y1, a2_p->y1);
a_res_p->x2 = LV_MAX(a1_p->x2, a2_p->x2);
a_res_p->y2 = LV_MAX(a1_p->y2, a2_p->y2);
}
/**
* Check if a point is on an area
* @param a_p pointer to an area
* @param p_p pointer to a point
* @param radius radius of area (e.g. for rounded rectangle)
* @return false:the point is out of the area
*/
bool _lv_area_is_point_on(const lv_area_t * a_p, const lv_point_t * p_p, lv_coord_t radius)
{
/*First check the basic area*/
bool is_on_rect = false;
if((p_p->x >= a_p->x1 && p_p->x <= a_p->x2) && ((p_p->y >= a_p->y1 && p_p->y <= a_p->y2))) {
is_on_rect = true;
}
if(!is_on_rect)
return false;
/*Now handle potential rounded rectangles*/
if(radius <= 0) {
/*No radius, it is within the rectangle*/
return true;
}
lv_coord_t w = lv_area_get_width(a_p) / 2;
lv_coord_t h = lv_area_get_height(a_p) / 2;
lv_coord_t max_radius = LV_MIN(w, h);
if(radius > max_radius)
radius = max_radius;
/*Check if it's in one of the corners*/
lv_area_t corner_area;
/*Top left*/
corner_area.x1 = a_p->x1;
corner_area.x2 = a_p->x1 + radius;
corner_area.y1 = a_p->y1;
corner_area.y2 = a_p->y1 + radius;
if(_lv_area_is_point_on(&corner_area, p_p, 0)) {
corner_area.x2 += radius;
corner_area.y2 += radius;
return lv_point_within_circle(&corner_area, p_p);
}
/*Bottom left*/
corner_area.y1 = a_p->y2 - radius;
corner_area.y2 = a_p->y2;
if(_lv_area_is_point_on(&corner_area, p_p, 0)) {
corner_area.x2 += radius;
corner_area.y1 -= radius;
return lv_point_within_circle(&corner_area, p_p);
}
/*Bottom right*/
corner_area.x1 = a_p->x2 - radius;
corner_area.x2 = a_p->x2;
if(_lv_area_is_point_on(&corner_area, p_p, 0)) {
corner_area.x1 -= radius;
corner_area.y1 -= radius;
return lv_point_within_circle(&corner_area, p_p);
}
/*Top right*/
corner_area.y1 = a_p->y1;
corner_area.y2 = a_p->y1 + radius;
if(_lv_area_is_point_on(&corner_area, p_p, 0)) {
corner_area.x1 -= radius;
corner_area.y2 += radius;
return lv_point_within_circle(&corner_area, p_p);
}
/*Not within corners*/
return true;
}
/**
* Check if two area has common parts
* @param a1_p pointer to an area.
* @param a2_p pointer to an other area
* @return false: a1_p and a2_p has no common parts
*/
bool _lv_area_is_on(const lv_area_t * a1_p, const lv_area_t * a2_p)
{
if((a1_p->x1 <= a2_p->x2) && (a1_p->x2 >= a2_p->x1) && (a1_p->y1 <= a2_p->y2) && (a1_p->y2 >= a2_p->y1)) {
return true;
}
else {
return false;
}
}
/**
* Check if an area is fully on an other
* @param ain_p pointer to an area which could be in 'aholder_p'
* @param aholder_p pointer to an area which could involve 'ain_p'
* @param radius radius of `aholder_p` (e.g. for rounded rectangle)
* @return true: `ain_p` is fully inside `aholder_p`
*/
bool _lv_area_is_in(const lv_area_t * ain_p, const lv_area_t * aholder_p, lv_coord_t radius)
{
bool is_in = false;
if(ain_p->x1 >= aholder_p->x1 && ain_p->y1 >= aholder_p->y1 && ain_p->x2 <= aholder_p->x2 &&
ain_p->y2 <= aholder_p->y2) {
is_in = true;
}
if(!is_in) return false;
if(radius == 0) return true;
/*Check if the corner points are inside the radius or not*/
lv_point_t p;
p.x = ain_p->x1;
p.y = ain_p->y1;
if(_lv_area_is_point_on(aholder_p, &p, radius) == false) return false;
p.x = ain_p->x2;
p.y = ain_p->y1;
if(_lv_area_is_point_on(aholder_p, &p, radius) == false) return false;
p.x = ain_p->x1;
p.y = ain_p->y2;
if(_lv_area_is_point_on(aholder_p, &p, radius) == false) return false;
p.x = ain_p->x2;
p.y = ain_p->y2;
if(_lv_area_is_point_on(aholder_p, &p, radius) == false) return false;
return true;
}
/**
* Check if an area is fully out of an other
* @param aout_p pointer to an area which could be in 'aholder_p'
* @param aholder_p pointer to an area which could involve 'ain_p'
* @param radius radius of `aholder_p` (e.g. for rounded rectangle)
* @return true: `aout_p` is fully outside `aholder_p`
*/
bool _lv_area_is_out(const lv_area_t * aout_p, const lv_area_t * aholder_p, lv_coord_t radius)
{
if(aout_p->x2 < aholder_p->x1 || aout_p->y2 < aholder_p->y1 || aout_p->x1 > aholder_p->x2 ||
aout_p->y1 > aholder_p->y2) {
return true;
}
if(radius == 0) return false;
/*Check if the corner points are outside the radius or not*/
lv_point_t p;
p.x = aout_p->x1;
p.y = aout_p->y1;
if(_lv_area_is_point_on(aholder_p, &p, radius)) return false;
p.x = aout_p->x2;
p.y = aout_p->y1;
if(_lv_area_is_point_on(aholder_p, &p, radius)) return false;
p.x = aout_p->x1;
p.y = aout_p->y2;
if(_lv_area_is_point_on(aholder_p, &p, radius)) return false;
p.x = aout_p->x2;
p.y = aout_p->y2;
if(_lv_area_is_point_on(aholder_p, &p, radius)) return false;
return true;
}
bool _lv_area_is_equal(const lv_area_t * a, const lv_area_t * b)
{
return a->x1 == b->x1 && a->x2 == b->x2 && a->y1 == b->y1 && a->y2 == b->y2;
}
/**
* Align an area to an other
* @param base an are where the other will be aligned
* @param to_align the area to align
* @param align `LV_ALIGN_...`
* @param res x/y coordinates where `to_align` align area should be placed
*/
void lv_area_align(const lv_area_t * base, lv_area_t * to_align, lv_align_t align, lv_coord_t ofs_x, lv_coord_t ofs_y)
{
lv_coord_t x;
lv_coord_t y;
switch(align) {
case LV_ALIGN_CENTER:
x = lv_area_get_width(base) / 2 - lv_area_get_width(to_align) / 2;
y = lv_area_get_height(base) / 2 - lv_area_get_height(to_align) / 2;
break;
case LV_ALIGN_TOP_LEFT:
x = 0;
y = 0;
break;
case LV_ALIGN_TOP_MID:
x = lv_area_get_width(base) / 2 - lv_area_get_width(to_align) / 2;
y = 0;
break;
case LV_ALIGN_TOP_RIGHT:
x = lv_area_get_width(base) - lv_area_get_width(to_align);
y = 0;
break;
case LV_ALIGN_BOTTOM_LEFT:
x = 0;
y = lv_area_get_height(base) - lv_area_get_height(to_align);
break;
case LV_ALIGN_BOTTOM_MID:
x = lv_area_get_width(base) / 2 - lv_area_get_width(to_align) / 2;
y = lv_area_get_height(base) - lv_area_get_height(to_align);
break;
case LV_ALIGN_BOTTOM_RIGHT:
x = lv_area_get_width(base) - lv_area_get_width(to_align);
y = lv_area_get_height(base) - lv_area_get_height(to_align);
break;
case LV_ALIGN_LEFT_MID:
x = 0;
y = lv_area_get_height(base) / 2 - lv_area_get_height(to_align) / 2;
break;
case LV_ALIGN_RIGHT_MID:
x = lv_area_get_width(base) - lv_area_get_width(to_align);
y = lv_area_get_height(base) / 2 - lv_area_get_height(to_align) / 2;
break;
case LV_ALIGN_OUT_TOP_LEFT:
x = 0;
y = -lv_area_get_height(to_align);
break;
case LV_ALIGN_OUT_TOP_MID:
x = lv_area_get_width(base) / 2 - lv_area_get_width(to_align) / 2;
y = -lv_area_get_height(to_align);
break;
case LV_ALIGN_OUT_TOP_RIGHT:
x = lv_area_get_width(base) - lv_area_get_width(to_align);
y = -lv_area_get_height(to_align);
break;
case LV_ALIGN_OUT_BOTTOM_LEFT:
x = 0;
y = lv_area_get_height(base);
break;
case LV_ALIGN_OUT_BOTTOM_MID:
x = lv_area_get_width(base) / 2 - lv_area_get_width(to_align) / 2;
y = lv_area_get_height(base);
break;
case LV_ALIGN_OUT_BOTTOM_RIGHT:
x = lv_area_get_width(base) - lv_area_get_width(to_align);
y = lv_area_get_height(base);
break;
case LV_ALIGN_OUT_LEFT_TOP:
x = -lv_area_get_width(to_align);
y = 0;
break;
case LV_ALIGN_OUT_LEFT_MID:
x = -lv_area_get_width(to_align);
y = lv_area_get_height(base) / 2 - lv_area_get_height(to_align) / 2;
break;
case LV_ALIGN_OUT_LEFT_BOTTOM:
x = -lv_area_get_width(to_align);
y = lv_area_get_height(base) - lv_area_get_height(to_align);
break;
case LV_ALIGN_OUT_RIGHT_TOP:
x = lv_area_get_width(base);
y = 0;
break;
case LV_ALIGN_OUT_RIGHT_MID:
x = lv_area_get_width(base);
y = lv_area_get_height(base) / 2 - lv_area_get_height(to_align) / 2;
break;
case LV_ALIGN_OUT_RIGHT_BOTTOM:
x = lv_area_get_width(base);
y = lv_area_get_height(base) - lv_area_get_height(to_align);
break;
default:
x = 0;
y = 0;
break;
}
x += base->x1;
y += base->y1;
lv_coord_t w = lv_area_get_width(to_align);
lv_coord_t h = lv_area_get_height(to_align);
to_align->x1 = x + ofs_x;
to_align->y1 = y + ofs_y;
to_align->x2 = to_align->x1 + w - 1;
to_align->y2 = to_align->y1 + h - 1;
}
#define _LV_TRANSFORM_TRIGO_SHIFT 10
void lv_point_transform(lv_point_t * p, int32_t angle, int32_t zoom, const lv_point_t * pivot)
{
if(angle == 0 && zoom == 256) {
return;
}
p->x -= pivot->x;
p->y -= pivot->y;
if(angle == 0) {
p->x = (((int32_t)(p->x) * zoom) >> 8) + pivot->x;
p->y = (((int32_t)(p->y) * zoom) >> 8) + pivot->y;
return;
}
static int32_t angle_prev = INT32_MIN;
static int32_t sinma;
static int32_t cosma;
if(angle_prev != angle) {
int32_t angle_limited = angle;
if(angle_limited > 3600) angle_limited -= 3600;
if(angle_limited < 0) angle_limited += 3600;
int32_t angle_low = angle_limited / 10;
int32_t angle_high = angle_low + 1;
int32_t angle_rem = angle_limited - (angle_low * 10);
int32_t s1 = lv_trigo_sin(angle_low);
int32_t s2 = lv_trigo_sin(angle_high);
int32_t c1 = lv_trigo_sin(angle_low + 90);
int32_t c2 = lv_trigo_sin(angle_high + 90);
sinma = (s1 * (10 - angle_rem) + s2 * angle_rem) / 10;
cosma = (c1 * (10 - angle_rem) + c2 * angle_rem) / 10;
sinma = sinma >> (LV_TRIGO_SHIFT - _LV_TRANSFORM_TRIGO_SHIFT);
cosma = cosma >> (LV_TRIGO_SHIFT - _LV_TRANSFORM_TRIGO_SHIFT);
angle_prev = angle;
}
int32_t x = p->x;
int32_t y = p->y;
if(zoom == 256) {
p->x = ((cosma * x - sinma * y) >> _LV_TRANSFORM_TRIGO_SHIFT) + pivot->x;
p->y = ((sinma * x + cosma * y) >> _LV_TRANSFORM_TRIGO_SHIFT) + pivot->y;
}
else {
p->x = (((cosma * x - sinma * y) * zoom) >> (_LV_TRANSFORM_TRIGO_SHIFT + 8)) + pivot->x;
p->y = (((sinma * x + cosma * y) * zoom) >> (_LV_TRANSFORM_TRIGO_SHIFT + 8)) + pivot->y;
}
}
LV_IMG_FAST_MEM uint32_t lv_psram_buf_get_size(void)
{
return DECODE_BUFFER_SIZE;
}
/**********************
* STATIC FUNCTIONS
**********************/
static bool lv_point_within_circle(const lv_area_t * area, const lv_point_t * p)
{
lv_coord_t r = (area->x2 - area->x1) / 2;
/*Circle center*/
lv_coord_t cx = area->x1 + r;
lv_coord_t cy = area->y1 + r;
/*Simplify the code by moving everything to (0, 0)*/
lv_coord_t px = p->x - cx;
lv_coord_t py = p->y - cy;
uint32_t r_sqrd = r * r;
uint32_t dist = (px * px) + (py * py);
if(dist <= r_sqrd)
return true;
else
return false;
}

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/**
* @file lv_area.h
*
*/
#ifndef LV_AREA_H
#define LV_AREA_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include <stdbool.h>
#include <stdint.h>
/*********************
* DEFINES
*********************/
#if LV_USE_LARGE_COORD
typedef int32_t lv_coord_t;
#else
typedef int16_t lv_coord_t;
#endif
/**********************
* TYPEDEFS
**********************/
/**
* Represents a point on the screen.
*/
typedef struct {
lv_coord_t x;
lv_coord_t y;
} lv_point_t;
/** Represents an area of the screen.*/
typedef struct {
lv_coord_t x1;
lv_coord_t y1;
lv_coord_t x2;
lv_coord_t y2;
} lv_area_t;
/** Alignments*/
enum {
LV_ALIGN_DEFAULT = 0,
LV_ALIGN_TOP_LEFT,
LV_ALIGN_TOP_MID,
LV_ALIGN_TOP_RIGHT,
LV_ALIGN_BOTTOM_LEFT,
LV_ALIGN_BOTTOM_MID,
LV_ALIGN_BOTTOM_RIGHT,
LV_ALIGN_LEFT_MID,
LV_ALIGN_RIGHT_MID,
LV_ALIGN_CENTER,
LV_ALIGN_OUT_TOP_LEFT,
LV_ALIGN_OUT_TOP_MID,
LV_ALIGN_OUT_TOP_RIGHT,
LV_ALIGN_OUT_BOTTOM_LEFT,
LV_ALIGN_OUT_BOTTOM_MID,
LV_ALIGN_OUT_BOTTOM_RIGHT,
LV_ALIGN_OUT_LEFT_TOP,
LV_ALIGN_OUT_LEFT_MID,
LV_ALIGN_OUT_LEFT_BOTTOM,
LV_ALIGN_OUT_RIGHT_TOP,
LV_ALIGN_OUT_RIGHT_MID,
LV_ALIGN_OUT_RIGHT_BOTTOM,
};
typedef uint8_t lv_align_t;
enum {
LV_DIR_NONE = 0x00,
LV_DIR_LEFT = (1 << 0),
LV_DIR_RIGHT = (1 << 1),
LV_DIR_TOP = (1 << 2),
LV_DIR_BOTTOM = (1 << 3),
LV_DIR_HOR = LV_DIR_LEFT | LV_DIR_RIGHT,
LV_DIR_VER = LV_DIR_TOP | LV_DIR_BOTTOM,
LV_DIR_ALL = LV_DIR_HOR | LV_DIR_VER,
LV_DIR_CUSTOMER_STARTSKY = (1 << 4)|LV_DIR_ALL,
};
typedef uint8_t lv_dir_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Initialize an area
* @param area_p pointer to an area
* @param x1 left coordinate of the area
* @param y1 top coordinate of the area
* @param x2 right coordinate of the area
* @param y2 bottom coordinate of the area
*/
void lv_area_set(lv_area_t * area_p, lv_coord_t x1, lv_coord_t y1, lv_coord_t x2, lv_coord_t y2);
/**
* Copy an area
* @param dest pointer to the destination area
* @param src pointer to the source area
*/
LV_IMG_FAST_MEM inline static void lv_area_copy(lv_area_t * dest, const lv_area_t * src)
{
dest->x1 = src->x1;
dest->y1 = src->y1;
dest->x2 = src->x2;
dest->y2 = src->y2;
}
/**
* Get the width of an area
* @param area_p pointer to an area
* @return the width of the area (if x1 == x2 -> width = 1)
*/
LV_IMG_FAST_MEM static inline lv_coord_t lv_area_get_width(const lv_area_t * area_p)
{
return (lv_coord_t)(area_p->x2 - area_p->x1 + 1);
}
/**
* Get the height of an area
* @param area_p pointer to an area
* @return the height of the area (if y1 == y2 -> height = 1)
*/
LV_IMG_FAST_MEM static inline lv_coord_t lv_area_get_height(const lv_area_t * area_p)
{
return (lv_coord_t)(area_p->y2 - area_p->y1 + 1);
}
/**
* Set the width of an area
* @param area_p pointer to an area
* @param w the new width of the area (w == 1 makes x1 == x2)
*/
void lv_area_set_width(lv_area_t * area_p, lv_coord_t w);
/**
* Set the height of an area
* @param area_p pointer to an area
* @param h the new height of the area (h == 1 makes y1 == y2)
*/
void lv_area_set_height(lv_area_t * area_p, lv_coord_t h);
/**
* Set the position of an area (width and height will be kept)
* @param area_p pointer to an area
* @param x the new x coordinate of the area
* @param y the new y coordinate of the area
*/
void _lv_area_set_pos(lv_area_t * area_p, lv_coord_t x, lv_coord_t y);
/**
* Return with area of an area (x * y)
* @param area_p pointer to an area
* @return size of area
*/
uint32_t lv_area_get_size(const lv_area_t * area_p);
void lv_area_increase(lv_area_t * area, lv_coord_t w_extra, lv_coord_t h_extra);
void lv_area_move(lv_area_t * area, lv_coord_t x_ofs, lv_coord_t y_ofs);
/**
* Get the common parts of two areas
* @param res_p pointer to an area, the result will be stored her
* @param a1_p pointer to the first area
* @param a2_p pointer to the second area
* @return false: the two area has NO common parts, res_p is invalid
*/
bool _lv_area_intersect(lv_area_t * res_p, const lv_area_t * a1_p, const lv_area_t * a2_p);
/**
* Join two areas into a third which involves the other two
* @param res_p pointer to an area, the result will be stored here
* @param a1_p pointer to the first area
* @param a2_p pointer to the second area
*/
void _lv_area_join(lv_area_t * a_res_p, const lv_area_t * a1_p, const lv_area_t * a2_p);
/**
* Check if a point is on an area
* @param a_p pointer to an area
* @param p_p pointer to a point
* @param radius radius of area (e.g. for rounded rectangle)
* @return false:the point is out of the area
*/
bool _lv_area_is_point_on(const lv_area_t * a_p, const lv_point_t * p_p, lv_coord_t radius);
/**
* Check if two area has common parts
* @param a1_p pointer to an area.
* @param a2_p pointer to an other area
* @return false: a1_p and a2_p has no common parts
*/
bool _lv_area_is_on(const lv_area_t * a1_p, const lv_area_t * a2_p);
/**
* Check if an area is fully on an other
* @param ain_p pointer to an area which could be in 'aholder_p'
* @param aholder_p pointer to an area which could involve 'ain_p'
* @param radius radius of `aholder_p` (e.g. for rounded rectangle)
* @return true: `ain_p` is fully inside `aholder_p`
*/
bool _lv_area_is_in(const lv_area_t * ain_p, const lv_area_t * aholder_p, lv_coord_t radius);
/**
* Check if an area is fully out of an other
* @param aout_p pointer to an area which could be in 'aholder_p'
* @param aholder_p pointer to an area which could involve 'ain_p'
* @param radius radius of `aholder_p` (e.g. for rounded rectangle)
* @return true: `aout_p` is fully outside `aholder_p`
*/
bool _lv_area_is_out(const lv_area_t * aout_p, const lv_area_t * aholder_p, lv_coord_t radius);
/**
* Check if 2 area is the same
* @param a pointer to an area
* @param b pointer to another area
*/
bool _lv_area_is_equal(const lv_area_t * a, const lv_area_t * b);
/**
* Align an area to an other
* @param base an are where the other will be aligned
* @param to_align the area to align
* @param align `LV_ALIGN_...`
*/
void lv_area_align(const lv_area_t * base, lv_area_t * to_align, lv_align_t align, lv_coord_t ofs_x, lv_coord_t ofs_y);
void lv_point_transform(lv_point_t * p, int32_t angle, int32_t zoom, const lv_point_t * pivot);
uint32_t lv_psram_buf_get_size(void);
/**********************
* MACROS
**********************/
#if LV_USE_LARGE_COORD
#define _LV_COORD_TYPE_SHIFT (29U)
#else
#define _LV_COORD_TYPE_SHIFT (13U)
#endif
#define _LV_COORD_TYPE_MASK (3 << _LV_COORD_TYPE_SHIFT)
#define _LV_COORD_TYPE(x) ((x) & _LV_COORD_TYPE_MASK) /*Extract type specifiers*/
#define _LV_COORD_PLAIN(x) ((x) & ~_LV_COORD_TYPE_MASK) /*Remove type specifiers*/
#define _LV_COORD_TYPE_PX (0 << _LV_COORD_TYPE_SHIFT)
#define _LV_COORD_TYPE_SPEC (1 << _LV_COORD_TYPE_SHIFT)
#define _LV_COORD_TYPE_PX_NEG (3 << _LV_COORD_TYPE_SHIFT)
#define LV_COORD_IS_PX(x) (_LV_COORD_TYPE(x) == _LV_COORD_TYPE_PX || \
_LV_COORD_TYPE(x) == _LV_COORD_TYPE_PX_NEG ? true : false)
#define LV_COORD_IS_SPEC(x) (_LV_COORD_TYPE(x) == _LV_COORD_TYPE_SPEC ? true : false)
#define LV_COORD_SET_SPEC(x) ((x) | _LV_COORD_TYPE_SPEC)
/*Special coordinates*/
#define LV_PCT(x) (x < 0 ? LV_COORD_SET_SPEC(1000 - (x)) : LV_COORD_SET_SPEC(x))
#define LV_COORD_IS_PCT(x) ((LV_COORD_IS_SPEC(x) && _LV_COORD_PLAIN(x) <= 2000) ? true : false)
#define LV_COORD_GET_PCT(x) (_LV_COORD_PLAIN(x) > 1000 ? 1000 - _LV_COORD_PLAIN(x) : _LV_COORD_PLAIN(x))
#define LV_SIZE_CONTENT LV_COORD_SET_SPEC(2001)
LV_EXPORT_CONST_INT(LV_SIZE_CONTENT);
/*Max coordinate value*/
#define LV_COORD_MAX ((1 << _LV_COORD_TYPE_SHIFT) - 1)
#define LV_COORD_MIN (-LV_COORD_MAX)
LV_EXPORT_CONST_INT(LV_COORD_MAX);
LV_EXPORT_CONST_INT(LV_COORD_MIN);
/**
* Convert a percentage value to `lv_coord_t`.
* Percentage values are stored in special range
* @param x the percentage (0..1000)
* @return a coordinate that stores the percentage
*/
static inline lv_coord_t lv_pct(lv_coord_t x)
{
return LV_PCT(x);
}
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif

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/**
* @file lv_assert.h
*
*/
#ifndef LV_ASSERT_H
#define LV_ASSERT_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include "lv_log.h"
#include "lv_mem.h"
#include LV_ASSERT_HANDLER_INCLUDE
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* MACROS
**********************/
#define LV_ASSERT(expr) \
do { \
if(!(expr)) { \
LV_LOG_ERROR("Asserted at expression: %s", #expr); \
LV_ASSERT_HANDLER \
} \
} while(0)
#define LV_ASSERT_MSG(expr, msg) \
do { \
if(!(expr)) { \
LV_LOG_ERROR("Asserted at expression: %s (%s)", #expr, msg); \
LV_ASSERT_HANDLER \
} \
} while(0)
/*-----------------
* ASSERTS
*-----------------*/
#if LV_USE_ASSERT_NULL
# define LV_ASSERT_NULL(p) LV_ASSERT_MSG(p != NULL, "NULL pointer");
#else
# define LV_ASSERT_NULL(p)
#endif
#if LV_USE_ASSERT_MALLOC
# define LV_ASSERT_MALLOC(p) LV_ASSERT_MSG(p != NULL, "Out of memory");
#else
# define LV_ASSERT_MALLOC(p)
#endif
#if LV_USE_ASSERT_MEM_INTEGRITY
# define LV_ASSERT_MEM_INTEGRITY() LV_ASSERT_MSG(lv_mem_test() == LV_RES_OK, "Memory integrity error");
#else
# define LV_ASSERT_MEM_INTEGRITY()
#endif
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_ASSERT_H*/

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/**
* @file lv_async.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_async.h"
#include "lv_mem.h"
#include "lv_timer.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
typedef struct _lv_async_info_t {
lv_async_cb_t cb;
void * user_data;
} lv_async_info_t;
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_async_timer_cb(lv_timer_t * timer);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_res_t lv_async_call(lv_async_cb_t async_xcb, void * user_data)
{
/*Allocate an info structure*/
lv_async_info_t * info = lv_mem_alloc(sizeof(lv_async_info_t));
if(info == NULL)
return LV_RES_INV;
/*Create a new timer*/
lv_timer_t * timer = lv_timer_create(lv_async_timer_cb, 0, info);
if(timer == NULL) {
lv_mem_free(info);
return LV_RES_INV;
}
info->cb = async_xcb;
info->user_data = user_data;
lv_timer_set_repeat_count(timer, 1);
return LV_RES_OK;
}
lv_res_t lv_async_call_cancel(lv_async_cb_t async_xcb, void * user_data)
{
lv_timer_t * timer = lv_timer_get_next(NULL);
lv_res_t res = LV_RES_INV;
while(timer != NULL) {
/*Find the next timer node*/
lv_timer_t * timer_next = lv_timer_get_next(timer);
/*Find async timer callback*/
if(timer->timer_cb == lv_async_timer_cb) {
lv_async_info_t * info = (lv_async_info_t *)timer->user_data;
/*Match user function callback and user data*/
if(info->cb == async_xcb && info->user_data == user_data) {
lv_timer_del(timer);
lv_mem_free(info);
res = LV_RES_OK;
}
}
timer = timer_next;
}
return res;
}
/**********************
* STATIC FUNCTIONS
**********************/
static void lv_async_timer_cb(lv_timer_t * timer)
{
lv_async_info_t * info = (lv_async_info_t *)timer->user_data;
info->cb(info->user_data);
lv_mem_free(info);
}

61
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/**
* @file lv_async.h
*
*/
#ifndef LV_ASYNC_H
#define LV_ASYNC_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lv_types.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**
* Type for async callback.
*/
typedef void (*lv_async_cb_t)(void *);
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Call an asynchronous function the next time lv_timer_handler() is run. This function is likely to return
* **before** the call actually happens!
* @param async_xcb a callback which is the task itself.
* (the 'x' in the argument name indicates that it's not a fully generic function because it not follows
* the `func_name(object, callback, ...)` convention)
* @param user_data custom parameter
*/
lv_res_t lv_async_call(lv_async_cb_t async_xcb, void * user_data);
/**
* Cancel an asynchronous function call
* @param async_xcb a callback which is the task itself.
* @param user_data custom parameter
*/
lv_res_t lv_async_call_cancel(lv_async_cb_t async_xcb, void * user_data);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_ASYNC_H*/

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/**
* @file lv_bidi.c
*
*/
/*********************
* INCLUDES
*********************/
#include <stddef.h>
#include "lv_bidi.h"
#include "lv_txt.h"
#include "../misc/lv_mem.h"
#if LV_USE_BIDI
/*********************
* DEFINES
*********************/
#define LV_BIDI_BRACKLET_DEPTH 4
// Highest bit of the 16-bit pos_conv value specifies whether this pos is RTL or not
#define GET_POS(x) ((x) & 0x7FFF)
#define IS_RTL_POS(x) (((x) & 0x8000) != 0)
#define SET_RTL_POS(x, is_rtl) (GET_POS(x) | ((is_rtl)? 0x8000: 0))
/**********************
* TYPEDEFS
**********************/
typedef struct {
uint32_t bracklet_pos;
lv_base_dir_t dir;
} bracket_stack_t;
/**********************
* STATIC PROTOTYPES
**********************/
static uint32_t lv_bidi_get_next_paragraph(const char * txt);
static lv_base_dir_t lv_bidi_get_letter_dir(uint32_t letter);
static bool lv_bidi_letter_is_weak(uint32_t letter);
static bool lv_bidi_letter_is_rtl(uint32_t letter);
static bool lv_bidi_letter_is_neutral(uint32_t letter);
static lv_base_dir_t get_next_run(const char * txt, lv_base_dir_t base_dir, uint32_t max_len, uint32_t * len,
uint16_t * pos_conv_len);
static void rtl_reverse(char * dest, const char * src, uint32_t len, uint16_t * pos_conv_out, uint16_t pos_conv_rd_base,
uint16_t pos_conv_len);
static uint32_t char_change_to_pair(uint32_t letter);
static lv_base_dir_t bracket_process(const char * txt, uint32_t next_pos, uint32_t len, uint32_t letter,
lv_base_dir_t base_dir);
static void fill_pos_conv(uint16_t * out, uint16_t len, uint16_t index);
static uint32_t get_txt_len(const char * txt, uint32_t max_len);
/**********************
* STATIC VARIABLES
**********************/
static const uint8_t bracket_left[] = {"<({["};
static const uint8_t bracket_right[] = {">)}]"};
static bracket_stack_t br_stack[LV_BIDI_BRACKLET_DEPTH];
static uint8_t br_stack_p;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Convert a text to get the characters in the correct visual order according to
* Unicode Bidirectional Algorithm
* @param str_in the text to process
* @param str_out store the result here. Has the be `strlen(str_in)` length
* @param base_dir `LV_BASE_DIR_LTR` or `LV_BASE_DIR_RTL`
*/
void _lv_bidi_process(const char * str_in, char * str_out, lv_base_dir_t base_dir)
{
if(base_dir == LV_BASE_DIR_AUTO) base_dir = _lv_bidi_detect_base_dir(str_in);
uint32_t par_start = 0;
uint32_t par_len;
while(str_in[par_start] == '\n' || str_in[par_start] == '\r') {
str_out[par_start] = str_in[par_start];
par_start ++;
}
while(str_in[par_start] != '\0') {
par_len = lv_bidi_get_next_paragraph(&str_in[par_start]);
_lv_bidi_process_paragraph(&str_in[par_start], &str_out[par_start], par_len, base_dir, NULL, 0);
par_start += par_len;
while(str_in[par_start] == '\n' || str_in[par_start] == '\r') {
str_out[par_start] = str_in[par_start];
par_start ++;
}
}
str_out[par_start] = '\0';
}
/**
* Auto-detect the direction of a text based on the first strong character
* @param txt the text to process
* @return `LV_BASE_DIR_LTR` or `LV_BASE_DIR_RTL`
*/
lv_base_dir_t _lv_bidi_detect_base_dir(const char * txt)
{
uint32_t i = 0;
uint32_t letter;
while(txt[i] != '\0') {
letter = _lv_txt_encoded_next(txt, &i);
lv_base_dir_t dir;
dir = lv_bidi_get_letter_dir(letter);
if(dir == LV_BASE_DIR_RTL || dir == LV_BASE_DIR_LTR) return dir;
}
/*If there were no strong char earlier return with the default base dir*/
if(LV_BIDI_BASE_DIR_DEF == LV_BASE_DIR_AUTO) return LV_BASE_DIR_LTR;
else return LV_BIDI_BASE_DIR_DEF;
}
/**
* Get the logical position of a character in a line
* @param str_in the input string. Can be only one line.
* @param bidi_txt internally the text is bidi processed which buffer can be get here.
* If not required anymore has to freed with `lv_mem_free()`
* Can be `NULL` is unused
* @param len length of the line in character count
* @param base_dir base direction of the text: `LV_BASE_DIR_LTR` or `LV_BASE_DIR_RTL`
* @param visual_pos the visual character position which logical position should be get
* @param is_rtl tell the char at `visual_pos` is RTL or LTR context
* @return the logical character position
*/
uint16_t _lv_bidi_get_logical_pos(const char * str_in, char ** bidi_txt, uint32_t len, lv_base_dir_t base_dir,
uint32_t visual_pos, bool * is_rtl)
{
uint32_t pos_conv_len = get_txt_len(str_in, len);
char * buf = lv_mem_buf_get(len + 1);
if(buf == NULL) return (uint16_t) -1;
uint16_t * pos_conv_buf = lv_mem_buf_get(pos_conv_len * sizeof(uint16_t));
if(pos_conv_buf == NULL) {
lv_mem_buf_release(buf);
return (uint16_t) -1;
}
if(bidi_txt) *bidi_txt = buf;
_lv_bidi_process_paragraph(str_in, bidi_txt ? *bidi_txt : NULL, len, base_dir, pos_conv_buf, pos_conv_len);
if(is_rtl) *is_rtl = IS_RTL_POS(pos_conv_buf[visual_pos]);
if(bidi_txt == NULL) lv_mem_buf_release(buf);
uint16_t res = GET_POS(pos_conv_buf[visual_pos]);
lv_mem_buf_release(pos_conv_buf);
return res;
}
/**
* Get the visual position of a character in a line
* @param str_in the input string. Can be only one line.
* @param bidi_txt internally the text is bidi processed which buffer can be get here.
* If not required anymore has to freed with `lv_mem_free()`
* Can be `NULL` is unused
* @param len length of the line in character count
* @param base_dir base direction of the text: `LV_BASE_DIR_LTR` or `LV_BASE_DIR_RTL`
* @param logical_pos the logical character position which visual position should be get
* @param is_rtl tell the char at `logical_pos` is RTL or LTR context
* @return the visual character position
*/
uint16_t _lv_bidi_get_visual_pos(const char * str_in, char ** bidi_txt, uint16_t len, lv_base_dir_t base_dir,
uint32_t logical_pos, bool * is_rtl)
{
uint32_t pos_conv_len = get_txt_len(str_in, len);
char * buf = lv_mem_buf_get(len + 1);
if(buf == NULL) return (uint16_t) -1;
uint16_t * pos_conv_buf = lv_mem_buf_get(pos_conv_len * sizeof(uint16_t));
if(pos_conv_buf == NULL) {
lv_mem_buf_release(buf);
return (uint16_t) -1;
}
if(bidi_txt) *bidi_txt = buf;
_lv_bidi_process_paragraph(str_in, bidi_txt ? *bidi_txt : NULL, len, base_dir, pos_conv_buf, pos_conv_len);
for(uint16_t i = 0; i < pos_conv_len; i++) {
if(GET_POS(pos_conv_buf[i]) == logical_pos) {
if(is_rtl) *is_rtl = IS_RTL_POS(pos_conv_buf[i]);
lv_mem_buf_release(pos_conv_buf);
if(bidi_txt == NULL) lv_mem_buf_release(buf);
return i;
}
}
lv_mem_buf_release(pos_conv_buf);
if(bidi_txt == NULL) lv_mem_buf_release(buf);
return (uint16_t) -1;
}
/**
* Bidi process a paragraph of text
* @param str_in the string to process
* @param str_out store the result here
* @param len length of the text
* @param base_dir base dir of the text
* @param pos_conv_out an `uint16_t` array to store the related logical position of the character.
* Can be `NULL` is unused
* @param pos_conv_len length of `pos_conv_out` in element count
*/
void _lv_bidi_process_paragraph(const char * str_in, char * str_out, uint32_t len, lv_base_dir_t base_dir,
uint16_t * pos_conv_out, uint16_t pos_conv_len)
{
uint32_t run_len = 0;
lv_base_dir_t run_dir;
uint32_t rd = 0;
uint32_t wr;
uint16_t pos_conv_run_len = 0;
uint16_t pos_conv_rd = 0;
uint16_t pos_conv_wr;
if(base_dir == LV_BASE_DIR_AUTO) base_dir = _lv_bidi_detect_base_dir(str_in);
if(base_dir == LV_BASE_DIR_RTL) {
wr = len;
pos_conv_wr = pos_conv_len;
}
else {
wr = 0;
pos_conv_wr = 0;
}
if(str_out) str_out[len] = '\0';
lv_base_dir_t dir = base_dir;
/*Empty the bracket stack*/
br_stack_p = 0;
/*Process neutral chars in the beginning*/
while(rd < len) {
uint32_t letter = _lv_txt_encoded_next(str_in, &rd);
pos_conv_rd++;
dir = lv_bidi_get_letter_dir(letter);
if(dir == LV_BASE_DIR_NEUTRAL) dir = bracket_process(str_in, rd, len, letter, base_dir);
if(dir != LV_BASE_DIR_NEUTRAL && dir != LV_BASE_DIR_WEAK) break;
}
if(rd && str_in[rd] != '\0') {
_lv_txt_encoded_prev(str_in, &rd);
pos_conv_rd--;
}
if(rd) {
if(base_dir == LV_BASE_DIR_LTR) {
if(str_out) {
lv_memcpy(&str_out[wr], str_in, rd);
wr += rd;
}
if(pos_conv_out) {
fill_pos_conv(&pos_conv_out[pos_conv_wr], pos_conv_rd, 0);
pos_conv_wr += pos_conv_rd;
}
}
else {
wr -= rd;
pos_conv_wr -= pos_conv_rd;
rtl_reverse(str_out ? &str_out[wr] : NULL, str_in, rd, pos_conv_out ? &pos_conv_out[pos_conv_wr] : NULL, 0,
pos_conv_rd);
}
}
/*Get and process the runs*/
while(rd < len && str_in[rd]) {
run_dir = get_next_run(&str_in[rd], base_dir, len - rd, &run_len, &pos_conv_run_len);
if(base_dir == LV_BASE_DIR_LTR) {
if(run_dir == LV_BASE_DIR_LTR) {
if(str_out) lv_memcpy(&str_out[wr], &str_in[rd], run_len);
if(pos_conv_out) fill_pos_conv(&pos_conv_out[pos_conv_wr], pos_conv_run_len, pos_conv_rd);
}
else rtl_reverse(str_out ? &str_out[wr] : NULL, &str_in[rd], run_len, pos_conv_out ? &pos_conv_out[pos_conv_wr] : NULL,
pos_conv_rd, pos_conv_run_len);
wr += run_len;
pos_conv_wr += pos_conv_run_len;
}
else {
wr -= run_len;
pos_conv_wr -= pos_conv_run_len;
if(run_dir == LV_BASE_DIR_LTR) {
if(str_out) lv_memcpy(&str_out[wr], &str_in[rd], run_len);
if(pos_conv_out) fill_pos_conv(&pos_conv_out[pos_conv_wr], pos_conv_run_len, pos_conv_rd);
}
else rtl_reverse(str_out ? &str_out[wr] : NULL, &str_in[rd], run_len, pos_conv_out ? &pos_conv_out[pos_conv_wr] : NULL,
pos_conv_rd, pos_conv_run_len);
}
rd += run_len;
pos_conv_rd += pos_conv_run_len;
}
}
void lv_bidi_calculate_align(lv_text_align_t * align, lv_base_dir_t * base_dir, const char * txt)
{
if(*base_dir == LV_BASE_DIR_AUTO) *base_dir = _lv_bidi_detect_base_dir(txt);
if(*align == LV_TEXT_ALIGN_AUTO) {
if(*base_dir == LV_BASE_DIR_RTL) *align = LV_TEXT_ALIGN_RIGHT;
else *align = LV_TEXT_ALIGN_LEFT;
}
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Get the next paragraph from a text
* @param txt the text to process
* @return the length of the current paragraph in byte count
*/
static uint32_t lv_bidi_get_next_paragraph(const char * txt)
{
uint32_t i = 0;
_lv_txt_encoded_next(txt, &i);
while(txt[i] != '\0' && txt[i] != '\n' && txt[i] != '\r') {
_lv_txt_encoded_next(txt, &i);
}
return i;
}
/**
* Get the direction of a character
* @param letter a Unicode character
* @return `LV_BASE_DIR_RTL/LTR/WEAK/NEUTRAL`
*/
static lv_base_dir_t lv_bidi_get_letter_dir(uint32_t letter)
{
if(lv_bidi_letter_is_rtl(letter)) return LV_BASE_DIR_RTL;
if(lv_bidi_letter_is_neutral(letter)) return LV_BASE_DIR_NEUTRAL;
if(lv_bidi_letter_is_weak(letter)) return LV_BASE_DIR_WEAK;
return LV_BASE_DIR_LTR;
}
/**
* Tell whether a character is weak or not
* @param letter a Unicode character
* @return true/false
*/
static bool lv_bidi_letter_is_weak(uint32_t letter)
{
uint32_t i = 0;
static const char weaks[] = "0123456789";
do {
uint32_t x = _lv_txt_encoded_next(weaks, &i);
if(letter == x) {
return true;
}
} while(weaks[i] != '\0');
return false;
}
/**
* Tell whether a character is RTL or not
* @param letter a Unicode character
* @return true/false
*/
static bool lv_bidi_letter_is_rtl(uint32_t letter)
{
if(letter >= 0x5d0 && letter <= 0x5ea) return true;
if(letter == 0x202E) return true; /*Unicode of LV_BIDI_RLO*/
/*Check for Persian and Arabic characters [https://en.wikipedia.org/wiki/Arabic_script_in_Unicode]*/
if(letter >= 0x600 && letter <= 0x6FF) return true;
if(letter >= 0xFB50 && letter <= 0xFDFF) return true;
if(letter >= 0xFE70 && letter <= 0xFEFF) return true;
return false;
}
/**
* Tell whether a character is neutral or not
* @param letter a Unicode character
* @return true/false
*/
static bool lv_bidi_letter_is_neutral(uint32_t letter)
{
uint16_t i;
static const char neutrals[] = " \t\n\r.,:;'\"`!?%/\\-=()[]{}<>@#&$|";
for(i = 0; neutrals[i] != '\0'; i++) {
if(letter == (uint32_t)neutrals[i]) return true;
}
return false;
}
static uint32_t get_txt_len(const char * txt, uint32_t max_len)
{
uint32_t len = 0;
uint32_t i = 0;
while(i < max_len && txt[i] != '\0') {
_lv_txt_encoded_next(txt, &i);
len++;
}
return len;
}
static void fill_pos_conv(uint16_t * out, uint16_t len, uint16_t index)
{
uint16_t i;
for(i = 0; i < len; i++) {
out[i] = SET_RTL_POS(index, false);
index++;
}
}
static lv_base_dir_t get_next_run(const char * txt, lv_base_dir_t base_dir, uint32_t max_len, uint32_t * len,
uint16_t * pos_conv_len)
{
uint32_t i = 0;
uint32_t letter;
uint16_t pos_conv_i = 0;
letter = _lv_txt_encoded_next(txt, NULL);
lv_base_dir_t dir = lv_bidi_get_letter_dir(letter);
if(dir == LV_BASE_DIR_NEUTRAL) dir = bracket_process(txt, 0, max_len, letter, base_dir);
/*Find the first strong char. Skip the neutrals*/
while(dir == LV_BASE_DIR_NEUTRAL || dir == LV_BASE_DIR_WEAK) {
letter = _lv_txt_encoded_next(txt, &i);
pos_conv_i++;
dir = lv_bidi_get_letter_dir(letter);
if(dir == LV_BASE_DIR_NEUTRAL) dir = bracket_process(txt, i, max_len, letter, base_dir);
if(dir == LV_BASE_DIR_LTR || dir == LV_BASE_DIR_RTL) break;
if(i >= max_len || txt[i] == '\0' || txt[i] == '\n' || txt[i] == '\r') {
*len = i;
*pos_conv_len = pos_conv_i;
return base_dir;
}
}
lv_base_dir_t run_dir = dir;
uint32_t i_prev = i;
uint32_t i_last_strong = i;
uint16_t pos_conv_i_prev = pos_conv_i;
uint16_t pos_conv_i_last_strong = pos_conv_i;
/*Find the next char which has different direction*/
lv_base_dir_t next_dir = base_dir;
while(i_prev < max_len && txt[i] != '\0' && txt[i] != '\n' && txt[i] != '\r') {
letter = _lv_txt_encoded_next(txt, &i);
pos_conv_i++;
next_dir = lv_bidi_get_letter_dir(letter);
if(next_dir == LV_BASE_DIR_NEUTRAL) next_dir = bracket_process(txt, i, max_len, letter, base_dir);
if(next_dir == LV_BASE_DIR_WEAK) {
if(run_dir == LV_BASE_DIR_RTL) {
if(base_dir == LV_BASE_DIR_RTL) {
next_dir = LV_BASE_DIR_LTR;
}
}
}
/*New dir found?*/
if((next_dir == LV_BASE_DIR_RTL || next_dir == LV_BASE_DIR_LTR) && next_dir != run_dir) {
/*Include neutrals if `run_dir == base_dir`*/
if(run_dir == base_dir) {
*len = i_prev;
*pos_conv_len = pos_conv_i_prev;
}
/*Exclude neutrals if `run_dir != base_dir`*/
else {
*len = i_last_strong;
*pos_conv_len = pos_conv_i_last_strong;
}
return run_dir;
}
if(next_dir != LV_BASE_DIR_NEUTRAL) {
i_last_strong = i;
pos_conv_i_last_strong = pos_conv_i;
}
i_prev = i;
pos_conv_i_prev = pos_conv_i;
}
/*Handle end of of string. Apply `base_dir` on trailing neutrals*/
/*Include neutrals if `run_dir == base_dir`*/
if(run_dir == base_dir) {
*len = i_prev;
*pos_conv_len = pos_conv_i_prev;
}
/*Exclude neutrals if `run_dir != base_dir`*/
else {
*len = i_last_strong;
*pos_conv_len = pos_conv_i_last_strong;
}
return run_dir;
}
static void rtl_reverse(char * dest, const char * src, uint32_t len, uint16_t * pos_conv_out, uint16_t pos_conv_rd_base,
uint16_t pos_conv_len)
{
uint32_t i = len;
uint32_t wr = 0;
uint16_t pos_conv_i = pos_conv_len;
uint16_t pos_conv_wr = 0;
while(i) {
uint32_t letter = _lv_txt_encoded_prev(src, &i);
uint16_t pos_conv_letter = --pos_conv_i;
/*Keep weak letters (numbers) as LTR*/
if(lv_bidi_letter_is_weak(letter)) {
uint32_t last_weak = i;
uint32_t first_weak = i;
uint16_t pos_conv_last_weak = pos_conv_i;
uint16_t pos_conv_first_weak = pos_conv_i;
while(i) {
letter = _lv_txt_encoded_prev(src, &i);
pos_conv_letter = --pos_conv_i;
/*No need to call `char_change_to_pair` because there not such chars here*/
/*Finish on non-weak char*/
/*but treat number and currency related chars as weak*/
if(lv_bidi_letter_is_weak(letter) == false && letter != '.' && letter != ',' && letter != '$' && letter != '%') {
_lv_txt_encoded_next(src, &i); /*Rewind one letter*/
pos_conv_i++;
first_weak = i;
pos_conv_first_weak = pos_conv_i;
break;
}
}
if(i == 0) {
first_weak = 0;
pos_conv_first_weak = 0;
}
if(dest) lv_memcpy(&dest[wr], &src[first_weak], last_weak - first_weak + 1);
if(pos_conv_out) fill_pos_conv(&pos_conv_out[pos_conv_wr], pos_conv_last_weak - pos_conv_first_weak + 1,
pos_conv_rd_base + pos_conv_first_weak);
wr += last_weak - first_weak + 1;
pos_conv_wr += pos_conv_last_weak - pos_conv_first_weak + 1;
}
/*Simply store in reversed order*/
else {
uint32_t letter_size = _lv_txt_encoded_size((const char *)&src[i]);
/*Swap arithmetical symbols*/
if(letter_size == 1) {
uint32_t new_letter = letter = char_change_to_pair(letter);
if(dest) dest[wr] = (uint8_t)new_letter;
if(pos_conv_out) pos_conv_out[pos_conv_wr] = SET_RTL_POS(pos_conv_rd_base + pos_conv_letter, true);
wr++;
pos_conv_wr++;
}
/*Just store the letter*/
else {
if(dest) lv_memcpy(&dest[wr], &src[i], letter_size);
if(pos_conv_out) pos_conv_out[pos_conv_wr] = SET_RTL_POS(pos_conv_rd_base + pos_conv_i, true);
wr += letter_size;
pos_conv_wr++;
}
}
}
}
static uint32_t char_change_to_pair(uint32_t letter)
{
uint8_t i;
for(i = 0; bracket_left[i] != '\0'; i++) {
if(letter == bracket_left[i]) return bracket_right[i];
}
for(i = 0; bracket_right[i] != '\0'; i++) {
if(letter == bracket_right[i]) return bracket_left[i];
}
return letter;
}
static lv_base_dir_t bracket_process(const char * txt, uint32_t next_pos, uint32_t len, uint32_t letter,
lv_base_dir_t base_dir)
{
lv_base_dir_t bracket_dir = LV_BASE_DIR_NEUTRAL;
uint8_t i;
/*Is the letter an opening bracket?*/
for(i = 0; bracket_left[i] != '\0'; i++) {
if(bracket_left[i] == letter) {
/*If so find its matching closing bracket.
*If a char with base dir. direction is found then the brackets will have `base_dir` direction*/
uint32_t txt_i = next_pos;
while(txt_i < len) {
uint32_t letter_next = _lv_txt_encoded_next(txt, &txt_i);
if(letter_next == bracket_right[i]) {
/*Closing bracket found*/
break;
}
else {
/*Save the dir*/
lv_base_dir_t letter_dir = lv_bidi_get_letter_dir(letter_next);
if(letter_dir == base_dir) {
bracket_dir = base_dir;
}
}
}
/*There were no matching closing bracket*/
if(txt_i > len) return LV_BASE_DIR_NEUTRAL;
/*There where a strong char with base dir in the bracket so the dir is found.*/
if(bracket_dir != LV_BASE_DIR_NEUTRAL && bracket_dir != LV_BASE_DIR_WEAK) break;
/*If there were no matching strong chars in the brackets then check the previous chars*/
txt_i = next_pos;
if(txt_i) _lv_txt_encoded_prev(txt, &txt_i);
while(txt_i > 0) {
uint32_t letter_next = _lv_txt_encoded_prev(txt, &txt_i);
lv_base_dir_t letter_dir = lv_bidi_get_letter_dir(letter_next);
if(letter_dir == LV_BASE_DIR_LTR || letter_dir == LV_BASE_DIR_RTL) {
bracket_dir = letter_dir;
break;
}
}
/*There where a previous strong char which can be used*/
if(bracket_dir != LV_BASE_DIR_NEUTRAL) break;
/*There were no strong chars before the bracket, so use the base dir.*/
if(txt_i == 0) bracket_dir = base_dir;
break;
}
}
/*The letter was an opening bracket*/
if(bracket_left[i] != '\0') {
if(bracket_dir == LV_BASE_DIR_NEUTRAL || br_stack_p == LV_BIDI_BRACKLET_DEPTH) return LV_BASE_DIR_NEUTRAL;
br_stack[br_stack_p].bracklet_pos = i;
br_stack[br_stack_p].dir = bracket_dir;
br_stack_p++;
return bracket_dir;
}
else if(br_stack_p > 0) {
/*Is the letter a closing bracket of the last opening?*/
if(letter == bracket_right[br_stack[br_stack_p - 1].bracklet_pos]) {
bracket_dir = br_stack[br_stack_p - 1].dir;
br_stack_p--;
return bracket_dir;
}
}
return LV_BASE_DIR_NEUTRAL;
}
#endif /*LV_USE_BIDI*/

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/**
* @file lv_bidi.h
*
*/
#ifndef LV_BIDI_H
#define LV_BIDI_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include <stdbool.h>
#include <stdint.h>
#include "lv_txt.h"
/*********************
* DEFINES
*********************/
/*Special non printable strong characters.
*They can be inserted to texts to affect the run's direction*/
#define LV_BIDI_LRO "\xE2\x80\xAD" /*U+202D*/
#define LV_BIDI_RLO "\xE2\x80\xAE" /*U+202E*/
/**********************
* TYPEDEFS
**********************/
enum {
LV_BASE_DIR_LTR = 0x00,
LV_BASE_DIR_RTL = 0x01,
LV_BASE_DIR_AUTO = 0x02,
LV_BASE_DIR_NEUTRAL = 0x20,
LV_BASE_DIR_WEAK = 0x21,
};
typedef uint8_t lv_base_dir_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
#if LV_USE_BIDI
/**
* Convert a text to get the characters in the correct visual order according to
* Unicode Bidirectional Algorithm
* @param str_in the text to process
* @param str_out store the result here. Has the be `strlen(str_in)` length
* @param base_dir `LV_BASE_DIR_LTR` or `LV_BASE_DIR_RTL`
*/
void _lv_bidi_process(const char * str_in, char * str_out, lv_base_dir_t base_dir);
/**
* Auto-detect the direction of a text based on the first strong character
* @param txt the text to process
* @return `LV_BASE_DIR_LTR` or `LV_BASE_DIR_RTL`
*/
lv_base_dir_t _lv_bidi_detect_base_dir(const char * txt);
/**
* Get the logical position of a character in a line
* @param str_in the input string. Can be only one line.
* @param bidi_txt internally the text is bidi processed which buffer can be get here.
* If not required anymore has to freed with `lv_mem_free()`
* Can be `NULL` is unused
* @param len length of the line in character count
* @param base_dir base direction of the text: `LV_BASE_DIR_LTR` or `LV_BASE_DIR_RTL`
* @param visual_pos the visual character position which logical position should be get
* @param is_rtl tell the char at `visual_pos` is RTL or LTR context
* @return the logical character position
*/
uint16_t _lv_bidi_get_logical_pos(const char * str_in, char ** bidi_txt, uint32_t len, lv_base_dir_t base_dir,
uint32_t visual_pos, bool * is_rtl);
/**
* Get the visual position of a character in a line
* @param str_in the input string. Can be only one line.
* @param bidi_txt internally the text is bidi processed which buffer can be get here.
* If not required anymore has to freed with `lv_mem_free()`
* Can be `NULL` is unused
* @param len length of the line in character count
* @param base_dir base direction of the text: `LV_BASE_DIR_LTR` or `LV_BASE_DIR_RTL`
* @param logical_pos the logical character position which visual position should be get
* @param is_rtl tell the char at `logical_pos` is RTL or LTR context
* @return the visual character position
*/
uint16_t _lv_bidi_get_visual_pos(const char * str_in, char ** bidi_txt, uint16_t len, lv_base_dir_t base_dir,
uint32_t logical_pos, bool * is_rtl);
/**
* Bidi process a paragraph of text
* @param str_in the string to process
* @param str_out store the result here
* @param len length of the text
* @param base_dir base dir of the text
* @param pos_conv_out an `uint16_t` array to store the related logical position of the character.
* Can be `NULL` is unused
* @param pos_conv_len length of `pos_conv_out` in element count
*/
void _lv_bidi_process_paragraph(const char * str_in, char * str_out, uint32_t len, lv_base_dir_t base_dir,
uint16_t * pos_conv_out, uint16_t pos_conv_len);
/**
* Get the real text alignment from the a text alignment, base direction and a text.
* @param align LV_TEXT_ALIGN_..., write back the calculated align here (LV_TEXT_ALIGN_LEFT/RIGHT/CENTER)
* @param base_dir LV_BASE_DIR_..., write the calculated base dir here (LV_BASE_DIR_LTR/RTL)
* @param txt a text, used with LV_BASE_DIR_AUTO to determine the base direction
*/
void lv_bidi_calculate_align(lv_text_align_t * align, lv_base_dir_t * base_dir, const char * txt);
/**********************
* MACROS
**********************/
#else /*LV_USE_BIDI*/
/**
* For compatibility if LV_USE_BIDI = 0
* Get the real text alignment from the a text alignment, base direction and a text.
* @param align For LV_TEXT_ALIGN_AUTO give LV_TEXT_ALIGN_LEFT else leave unchanged, write back the calculated align here
* @param base_dir Unused
* @param txt Unused
*/
static inline void lv_bidi_calculate_align(lv_text_align_t * align, lv_base_dir_t * base_dir, const char * txt)
{
LV_UNUSED(txt);
LV_UNUSED(base_dir);
if(*align == LV_TEXT_ALIGN_AUTO) * align = LV_TEXT_ALIGN_LEFT;
}
#endif /*LV_USE_BIDI*/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_BIDI_H*/

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/**
* @file lv_color.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_color.h"
#include "lv_log.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
LV_ATTRIBUTE_FAST_MEM void lv_color_fill(lv_color_t * buf, lv_color_t color, uint32_t px_num)
{
#if LV_COLOR_DEPTH == 16
uintptr_t buf_int = (uintptr_t)buf;
if(buf_int & 0x3) {
*buf = color;
buf++;
px_num--;
}
uint32_t c32 = (uint32_t)color.full + ((uint32_t)color.full << 16);
uint32_t * buf32 = (uint32_t *)buf;
while(px_num > 16) {
*buf32 = c32;
buf32++;
*buf32 = c32;
buf32++;
*buf32 = c32;
buf32++;
*buf32 = c32;
buf32++;
*buf32 = c32;
buf32++;
*buf32 = c32;
buf32++;
*buf32 = c32;
buf32++;
*buf32 = c32;
buf32++;
px_num -= 16;
}
buf = (lv_color_t *)buf32;
while(px_num) {
*buf = color;
buf++;
px_num--;
}
#else
while(px_num > 16) {
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
*buf = color;
buf++;
px_num -= 16;
}
while(px_num) {
*buf = color;
buf++;
px_num--;
}
#endif
}
lv_color_t lv_color_lighten(lv_color_t c, lv_opa_t lvl)
{
return lv_color_mix(lv_color_white(), c, lvl);
}
lv_color_t lv_color_darken(lv_color_t c, lv_opa_t lvl)
{
return lv_color_mix(lv_color_black(), c, lvl);
}
lv_color_t lv_color_change_lightness(lv_color_t c, lv_opa_t lvl)
{
/*It'd be better to convert the color to HSL, change L and convert back to RGB.*/
if(lvl == LV_OPA_50) return c;
else if(lvl < LV_OPA_50) return lv_color_darken(c, (LV_OPA_50 - lvl) * 2);
else return lv_color_lighten(c, (lvl - LV_OPA_50) * 2);
}
/**
* Convert a HSV color to RGB
* @param h hue [0..359]
* @param s saturation [0..100]
* @param v value [0..100]
* @return the given RGB color in RGB (with LV_COLOR_DEPTH depth)
*/
lv_color_t lv_color_hsv_to_rgb(uint16_t h, uint8_t s, uint8_t v)
{
h = (uint32_t)((uint32_t)h * 255) / 360;
s = (uint16_t)((uint16_t)s * 255) / 100;
v = (uint16_t)((uint16_t)v * 255) / 100;
uint8_t r, g, b;
uint8_t region, remainder, p, q, t;
if(s == 0) {
return lv_color_make(v, v, v);
}
region = h / 43;
remainder = (h - (region * 43)) * 6;
p = (v * (255 - s)) >> 8;
q = (v * (255 - ((s * remainder) >> 8))) >> 8;
t = (v * (255 - ((s * (255 - remainder)) >> 8))) >> 8;
switch(region) {
case 0:
r = v;
g = t;
b = p;
break;
case 1:
r = q;
g = v;
b = p;
break;
case 2:
r = p;
g = v;
b = t;
break;
case 3:
r = p;
g = q;
b = v;
break;
case 4:
r = t;
g = p;
b = v;
break;
default:
r = v;
g = p;
b = q;
break;
}
lv_color_t result = lv_color_make(r, g, b);
return result;
}
/**
* Convert a 32-bit RGB color to HSV
* @param r8 8-bit red
* @param g8 8-bit green
* @param b8 8-bit blue
* @return the given RGB color in HSV
*/
lv_color_hsv_t lv_color_rgb_to_hsv(uint8_t r8, uint8_t g8, uint8_t b8)
{
uint16_t r = ((uint32_t)r8 << 10) / 255;
uint16_t g = ((uint32_t)g8 << 10) / 255;
uint16_t b = ((uint32_t)b8 << 10) / 255;
uint16_t rgbMin = r < g ? (r < b ? r : b) : (g < b ? g : b);
uint16_t rgbMax = r > g ? (r > b ? r : b) : (g > b ? g : b);
lv_color_hsv_t hsv;
// https://en.wikipedia.org/wiki/HSL_and_HSV#Lightness
hsv.v = (100 * rgbMax) >> 10;
int32_t delta = rgbMax - rgbMin;
if(delta < 3) {
hsv.h = 0;
hsv.s = 0;
return hsv;
}
// https://en.wikipedia.org/wiki/HSL_and_HSV#Saturation
hsv.s = 100 * delta / rgbMax;
if(hsv.s < 3) {
hsv.h = 0;
return hsv;
}
// https://en.wikipedia.org/wiki/HSL_and_HSV#Hue_and_chroma
int32_t h;
if(rgbMax == r)
h = (((g - b) << 10) / delta) + (g < b ? (6 << 10) : 0); // between yellow & magenta
else if(rgbMax == g)
h = (((b - r) << 10) / delta) + (2 << 10); // between cyan & yellow
else if(rgbMax == b)
h = (((r - g) << 10) / delta) + (4 << 10); // between magenta & cyan
else
h = 0;
h *= 60;
h >>= 10;
if(h < 0) h += 360;
hsv.h = h;
return hsv;
}
/**
* Convert a color to HSV
* @param color color
* @return the given color in HSV
*/
lv_color_hsv_t lv_color_to_hsv(lv_color_t color)
{
lv_color32_t color32;
color32.full = lv_color_to32(color);
return lv_color_rgb_to_hsv(color32.ch.red, color32.ch.green, color32.ch.blue);
}
lv_color_t lv_palette_main(lv_palette_t p)
{
static const lv_color_t colors[] = {
LV_COLOR_MAKE(0xF4, 0x43, 0x36), LV_COLOR_MAKE(0xE9, 0x1E, 0x63), LV_COLOR_MAKE(0x9C, 0x27, 0xB0), LV_COLOR_MAKE(0x67, 0x3A, 0xB7),
LV_COLOR_MAKE(0x3F, 0x51, 0xB5), LV_COLOR_MAKE(0x21, 0x96, 0xF3), LV_COLOR_MAKE(0x03, 0xA9, 0xF4), LV_COLOR_MAKE(0x00, 0xBC, 0xD4),
LV_COLOR_MAKE(0x00, 0x96, 0x88), LV_COLOR_MAKE(0x4C, 0xAF, 0x50), LV_COLOR_MAKE(0x8B, 0xC3, 0x4A), LV_COLOR_MAKE(0xCD, 0xDC, 0x39),
LV_COLOR_MAKE(0xFF, 0xEB, 0x3B), LV_COLOR_MAKE(0xFF, 0xC1, 0x07), LV_COLOR_MAKE(0xFF, 0x98, 0x00), LV_COLOR_MAKE(0xFF, 0x57, 0x22),
LV_COLOR_MAKE(0x79, 0x55, 0x48), LV_COLOR_MAKE(0x60, 0x7D, 0x8B), LV_COLOR_MAKE(0x9E, 0x9E, 0x9E)
};
if(p >= _LV_PALETTE_LAST) {
LV_LOG_WARN("Invalid palette: %d", p);
return lv_color_black();
}
return colors[p];
}
lv_color_t lv_palette_lighten(lv_palette_t p, uint8_t lvl)
{
static const lv_color_t colors[][5] = {
{LV_COLOR_MAKE(0xEF, 0x53, 0x50), LV_COLOR_MAKE(0xE5, 0x73, 0x73), LV_COLOR_MAKE(0xEF, 0x9A, 0x9A), LV_COLOR_MAKE(0xFF, 0xCD, 0xD2), LV_COLOR_MAKE(0xFF, 0xEB, 0xEE)},
{LV_COLOR_MAKE(0xEC, 0x40, 0x7A), LV_COLOR_MAKE(0xF0, 0x62, 0x92), LV_COLOR_MAKE(0xF4, 0x8F, 0xB1), LV_COLOR_MAKE(0xF8, 0xBB, 0xD0), LV_COLOR_MAKE(0xFC, 0xE4, 0xEC)},
{LV_COLOR_MAKE(0xAB, 0x47, 0xBC), LV_COLOR_MAKE(0xBA, 0x68, 0xC8), LV_COLOR_MAKE(0xCE, 0x93, 0xD8), LV_COLOR_MAKE(0xE1, 0xBE, 0xE7), LV_COLOR_MAKE(0xF3, 0xE5, 0xF5)},
{LV_COLOR_MAKE(0x7E, 0x57, 0xC2), LV_COLOR_MAKE(0x95, 0x75, 0xCD), LV_COLOR_MAKE(0xB3, 0x9D, 0xDB), LV_COLOR_MAKE(0xD1, 0xC4, 0xE9), LV_COLOR_MAKE(0xED, 0xE7, 0xF6)},
{LV_COLOR_MAKE(0x5C, 0x6B, 0xC0), LV_COLOR_MAKE(0x79, 0x86, 0xCB), LV_COLOR_MAKE(0x9F, 0xA8, 0xDA), LV_COLOR_MAKE(0xC5, 0xCA, 0xE9), LV_COLOR_MAKE(0xE8, 0xEA, 0xF6)},
{LV_COLOR_MAKE(0x42, 0xA5, 0xF5), LV_COLOR_MAKE(0x64, 0xB5, 0xF6), LV_COLOR_MAKE(0x90, 0xCA, 0xF9), LV_COLOR_MAKE(0xBB, 0xDE, 0xFB), LV_COLOR_MAKE(0xE3, 0xF2, 0xFD)},
{LV_COLOR_MAKE(0x29, 0xB6, 0xF6), LV_COLOR_MAKE(0x4F, 0xC3, 0xF7), LV_COLOR_MAKE(0x81, 0xD4, 0xFA), LV_COLOR_MAKE(0xB3, 0xE5, 0xFC), LV_COLOR_MAKE(0xE1, 0xF5, 0xFE)},
{LV_COLOR_MAKE(0x26, 0xC6, 0xDA), LV_COLOR_MAKE(0x4D, 0xD0, 0xE1), LV_COLOR_MAKE(0x80, 0xDE, 0xEA), LV_COLOR_MAKE(0xB2, 0xEB, 0xF2), LV_COLOR_MAKE(0xE0, 0xF7, 0xFA)},
{LV_COLOR_MAKE(0x26, 0xA6, 0x9A), LV_COLOR_MAKE(0x4D, 0xB6, 0xAC), LV_COLOR_MAKE(0x80, 0xCB, 0xC4), LV_COLOR_MAKE(0xB2, 0xDF, 0xDB), LV_COLOR_MAKE(0xE0, 0xF2, 0xF1)},
{LV_COLOR_MAKE(0x66, 0xBB, 0x6A), LV_COLOR_MAKE(0x81, 0xC7, 0x84), LV_COLOR_MAKE(0xA5, 0xD6, 0xA7), LV_COLOR_MAKE(0xC8, 0xE6, 0xC9), LV_COLOR_MAKE(0xE8, 0xF5, 0xE9)},
{LV_COLOR_MAKE(0x9C, 0xCC, 0x65), LV_COLOR_MAKE(0xAE, 0xD5, 0x81), LV_COLOR_MAKE(0xC5, 0xE1, 0xA5), LV_COLOR_MAKE(0xDC, 0xED, 0xC8), LV_COLOR_MAKE(0xF1, 0xF8, 0xE9)},
{LV_COLOR_MAKE(0xD4, 0xE1, 0x57), LV_COLOR_MAKE(0xDC, 0xE7, 0x75), LV_COLOR_MAKE(0xE6, 0xEE, 0x9C), LV_COLOR_MAKE(0xF0, 0xF4, 0xC3), LV_COLOR_MAKE(0xF9, 0xFB, 0xE7)},
{LV_COLOR_MAKE(0xFF, 0xEE, 0x58), LV_COLOR_MAKE(0xFF, 0xF1, 0x76), LV_COLOR_MAKE(0xFF, 0xF5, 0x9D), LV_COLOR_MAKE(0xFF, 0xF9, 0xC4), LV_COLOR_MAKE(0xFF, 0xFD, 0xE7)},
{LV_COLOR_MAKE(0xFF, 0xCA, 0x28), LV_COLOR_MAKE(0xFF, 0xD5, 0x4F), LV_COLOR_MAKE(0xFF, 0xE0, 0x82), LV_COLOR_MAKE(0xFF, 0xEC, 0xB3), LV_COLOR_MAKE(0xFF, 0xF8, 0xE1)},
{LV_COLOR_MAKE(0xFF, 0xA7, 0x26), LV_COLOR_MAKE(0xFF, 0xB7, 0x4D), LV_COLOR_MAKE(0xFF, 0xCC, 0x80), LV_COLOR_MAKE(0xFF, 0xE0, 0xB2), LV_COLOR_MAKE(0xFF, 0xF3, 0xE0)},
{LV_COLOR_MAKE(0xFF, 0x70, 0x43), LV_COLOR_MAKE(0xFF, 0x8A, 0x65), LV_COLOR_MAKE(0xFF, 0xAB, 0x91), LV_COLOR_MAKE(0xFF, 0xCC, 0xBC), LV_COLOR_MAKE(0xFB, 0xE9, 0xE7)},
{LV_COLOR_MAKE(0x8D, 0x6E, 0x63), LV_COLOR_MAKE(0xA1, 0x88, 0x7F), LV_COLOR_MAKE(0xBC, 0xAA, 0xA4), LV_COLOR_MAKE(0xD7, 0xCC, 0xC8), LV_COLOR_MAKE(0xEF, 0xEB, 0xE9)},
{LV_COLOR_MAKE(0x78, 0x90, 0x9C), LV_COLOR_MAKE(0x90, 0xA4, 0xAE), LV_COLOR_MAKE(0xB0, 0xBE, 0xC5), LV_COLOR_MAKE(0xCF, 0xD8, 0xDC), LV_COLOR_MAKE(0xEC, 0xEF, 0xF1)},
{LV_COLOR_MAKE(0xBD, 0xBD, 0xBD), LV_COLOR_MAKE(0xE0, 0xE0, 0xE0), LV_COLOR_MAKE(0xEE, 0xEE, 0xEE), LV_COLOR_MAKE(0xF5, 0xF5, 0xF5), LV_COLOR_MAKE(0xFA, 0xFA, 0xFA)},
};
if(p >= _LV_PALETTE_LAST) {
LV_LOG_WARN("Invalid palette: %d", p);
return lv_color_black();
}
if(lvl == 0 || lvl > 5) {
LV_LOG_WARN("Invalid level: %d. Must be 1..5", lvl);
return lv_color_black();
}
lvl--;
return colors[p][lvl];
}
lv_color_t lv_palette_darken(lv_palette_t p, uint8_t lvl)
{
static const lv_color_t colors[][4] = {
{LV_COLOR_MAKE(0xE5, 0x39, 0x35), LV_COLOR_MAKE(0xD3, 0x2F, 0x2F), LV_COLOR_MAKE(0xC6, 0x28, 0x28), LV_COLOR_MAKE(0xB7, 0x1C, 0x1C)},
{LV_COLOR_MAKE(0xD8, 0x1B, 0x60), LV_COLOR_MAKE(0xC2, 0x18, 0x5B), LV_COLOR_MAKE(0xAD, 0x14, 0x57), LV_COLOR_MAKE(0x88, 0x0E, 0x4F)},
{LV_COLOR_MAKE(0x8E, 0x24, 0xAA), LV_COLOR_MAKE(0x7B, 0x1F, 0xA2), LV_COLOR_MAKE(0x6A, 0x1B, 0x9A), LV_COLOR_MAKE(0x4A, 0x14, 0x8C)},
{LV_COLOR_MAKE(0x5E, 0x35, 0xB1), LV_COLOR_MAKE(0x51, 0x2D, 0xA8), LV_COLOR_MAKE(0x45, 0x27, 0xA0), LV_COLOR_MAKE(0x31, 0x1B, 0x92)},
{LV_COLOR_MAKE(0x39, 0x49, 0xAB), LV_COLOR_MAKE(0x30, 0x3F, 0x9F), LV_COLOR_MAKE(0x28, 0x35, 0x93), LV_COLOR_MAKE(0x1A, 0x23, 0x7E)},
{LV_COLOR_MAKE(0x1E, 0x88, 0xE5), LV_COLOR_MAKE(0x19, 0x76, 0xD2), LV_COLOR_MAKE(0x15, 0x65, 0xC0), LV_COLOR_MAKE(0x0D, 0x47, 0xA1)},
{LV_COLOR_MAKE(0x03, 0x9B, 0xE5), LV_COLOR_MAKE(0x02, 0x88, 0xD1), LV_COLOR_MAKE(0x02, 0x77, 0xBD), LV_COLOR_MAKE(0x01, 0x57, 0x9B)},
{LV_COLOR_MAKE(0x00, 0xAC, 0xC1), LV_COLOR_MAKE(0x00, 0x97, 0xA7), LV_COLOR_MAKE(0x00, 0x83, 0x8F), LV_COLOR_MAKE(0x00, 0x60, 0x64)},
{LV_COLOR_MAKE(0x00, 0x89, 0x7B), LV_COLOR_MAKE(0x00, 0x79, 0x6B), LV_COLOR_MAKE(0x00, 0x69, 0x5C), LV_COLOR_MAKE(0x00, 0x4D, 0x40)},
{LV_COLOR_MAKE(0x43, 0xA0, 0x47), LV_COLOR_MAKE(0x38, 0x8E, 0x3C), LV_COLOR_MAKE(0x2E, 0x7D, 0x32), LV_COLOR_MAKE(0x1B, 0x5E, 0x20)},
{LV_COLOR_MAKE(0x7C, 0xB3, 0x42), LV_COLOR_MAKE(0x68, 0x9F, 0x38), LV_COLOR_MAKE(0x55, 0x8B, 0x2F), LV_COLOR_MAKE(0x33, 0x69, 0x1E)},
{LV_COLOR_MAKE(0xC0, 0xCA, 0x33), LV_COLOR_MAKE(0xAF, 0xB4, 0x2B), LV_COLOR_MAKE(0x9E, 0x9D, 0x24), LV_COLOR_MAKE(0x82, 0x77, 0x17)},
{LV_COLOR_MAKE(0xFD, 0xD8, 0x35), LV_COLOR_MAKE(0xFB, 0xC0, 0x2D), LV_COLOR_MAKE(0xF9, 0xA8, 0x25), LV_COLOR_MAKE(0xF5, 0x7F, 0x17)},
{LV_COLOR_MAKE(0xFF, 0xB3, 0x00), LV_COLOR_MAKE(0xFF, 0xA0, 0x00), LV_COLOR_MAKE(0xFF, 0x8F, 0x00), LV_COLOR_MAKE(0xFF, 0x6F, 0x00)},
{LV_COLOR_MAKE(0xFB, 0x8C, 0x00), LV_COLOR_MAKE(0xF5, 0x7C, 0x00), LV_COLOR_MAKE(0xEF, 0x6C, 0x00), LV_COLOR_MAKE(0xE6, 0x51, 0x00)},
{LV_COLOR_MAKE(0xF4, 0x51, 0x1E), LV_COLOR_MAKE(0xE6, 0x4A, 0x19), LV_COLOR_MAKE(0xD8, 0x43, 0x15), LV_COLOR_MAKE(0xBF, 0x36, 0x0C)},
{LV_COLOR_MAKE(0x6D, 0x4C, 0x41), LV_COLOR_MAKE(0x5D, 0x40, 0x37), LV_COLOR_MAKE(0x4E, 0x34, 0x2E), LV_COLOR_MAKE(0x3E, 0x27, 0x23)},
{LV_COLOR_MAKE(0x54, 0x6E, 0x7A), LV_COLOR_MAKE(0x45, 0x5A, 0x64), LV_COLOR_MAKE(0x37, 0x47, 0x4F), LV_COLOR_MAKE(0x26, 0x32, 0x38)},
{LV_COLOR_MAKE(0x75, 0x75, 0x75), LV_COLOR_MAKE(0x61, 0x61, 0x61), LV_COLOR_MAKE(0x42, 0x42, 0x42), LV_COLOR_MAKE(0x21, 0x21, 0x21)},
};
if(p >= _LV_PALETTE_LAST) {
LV_LOG_WARN("Invalid palette: %d", p);
return lv_color_black();
}
if(lvl == 0 || lvl > 4) {
LV_LOG_WARN("Invalid level: %d. Must be 1..4", lvl);
return lv_color_black();
}
lvl--;
return colors[p][lvl];
}

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MCU/components/modules/lvgl/src/misc/lv_color.h Normal file
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/**
* @file lv_color.h
*
*/
#ifndef LV_COLOR_H
#define LV_COLOR_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include "lv_assert.h"
#include "lv_math.h"
#include "lv_types.h"
/*Error checking*/
#if LV_COLOR_DEPTH == 24
#error "LV_COLOR_DEPTH 24 is deprecated. Use LV_COLOR_DEPTH 32 instead (lv_conf.h)"
#endif
#if LV_COLOR_DEPTH != 16 && LV_COLOR_16_SWAP != 0
#error "LV_COLOR_16_SWAP requires LV_COLOR_DEPTH == 16. Set it in lv_conf.h"
#endif
#include <stdint.h>
/*********************
* DEFINES
*********************/
LV_EXPORT_CONST_INT(LV_COLOR_DEPTH);
LV_EXPORT_CONST_INT(LV_COLOR_16_SWAP);
/**
* Opacity percentages.
*/
enum {
LV_OPA_TRANSP = 0,
LV_OPA_0 = 0,
LV_OPA_10 = 25,
LV_OPA_20 = 51,
LV_OPA_30 = 76,
LV_OPA_40 = 102,
LV_OPA_50 = 127,
LV_OPA_60 = 153,
LV_OPA_70 = 178,
LV_OPA_80 = 204,
LV_OPA_90 = 229,
LV_OPA_100 = 255,
LV_OPA_COVER = 255,
};
#define LV_OPA_MIN 2 /*Opacities below this will be transparent*/
#define LV_OPA_MAX 253 /*Opacities above this will fully cover*/
#if LV_COLOR_DEPTH == 1
#define LV_COLOR_SIZE 8
#elif LV_COLOR_DEPTH == 8
#define LV_COLOR_SIZE 8
#elif LV_COLOR_DEPTH == 16
#define LV_COLOR_SIZE 16
#elif LV_COLOR_DEPTH == 32
#define LV_COLOR_SIZE 32
#else
#error "Invalid LV_COLOR_DEPTH in lv_conf.h! Set it to 1, 8, 16 or 32!"
#endif
#if defined(__cplusplus) && !defined(_LV_COLOR_HAS_MODERN_CPP)
/**
* MSVC compiler's definition of the __cplusplus indicating 199711L regardless to C++ standard version
* see https://devblogs.microsoft.com/cppblog/msvc-now-correctly-reports-cplusplus
* so we use _MSC_VER macro instead of __cplusplus
*/
#ifdef _MSC_VER
#if _MSC_VER >= 1900 /*Visual Studio 2015*/
#define _LV_COLOR_HAS_MODERN_CPP 1
#endif
#else
#if __cplusplus >= 201103L
#define _LV_COLOR_HAS_MODERN_CPP 1
#endif
#endif
#endif /*__cplusplus*/
#ifndef _LV_COLOR_HAS_MODERN_CPP
#define _LV_COLOR_HAS_MODERN_CPP 0
#endif
#if _LV_COLOR_HAS_MODERN_CPP
/*Fix msvc compiler error C4576 inside C++ code*/
#define _LV_COLOR_MAKE_TYPE_HELPER lv_color_t
#else
#define _LV_COLOR_MAKE_TYPE_HELPER (lv_color_t)
#endif
/*---------------------------------------
* Macros for all existing color depths
* to set/get values of the color channels
*------------------------------------------*/
# define LV_COLOR_SET_R1(c, v) (c).ch.red = (uint8_t)((v) & 0x1)
# define LV_COLOR_SET_G1(c, v) (c).ch.green = (uint8_t)((v) & 0x1)
# define LV_COLOR_SET_B1(c, v) (c).ch.blue = (uint8_t)((v) & 0x1)
# define LV_COLOR_SET_A1(c, v) do {} while(0)
# define LV_COLOR_GET_R1(c) (c).ch.red
# define LV_COLOR_GET_G1(c) (c).ch.green
# define LV_COLOR_GET_B1(c) (c).ch.blue
# define LV_COLOR_GET_A1(c) 0xFF
# define _LV_COLOR_ZERO_INITIALIZER1 {0x00}
# define LV_COLOR_MAKE1(r8, g8, b8) {(uint8_t)((b8 >> 7) | (g8 >> 7) | (r8 >> 7))}
# define LV_COLOR_SET_R8(c, v) (c).ch.red = (uint8_t)((v) & 0x7U)
# define LV_COLOR_SET_G8(c, v) (c).ch.green = (uint8_t)((v) & 0x7U)
# define LV_COLOR_SET_B8(c, v) (c).ch.blue = (uint8_t)((v) & 0x3U)
# define LV_COLOR_SET_A8(c, v) do {} while(0)
# define LV_COLOR_GET_R8(c) (c).ch.red
# define LV_COLOR_GET_G8(c) (c).ch.green
# define LV_COLOR_GET_B8(c) (c).ch.blue
# define LV_COLOR_GET_A8(c) 0xFF
# define _LV_COLOR_ZERO_INITIALIZER8 {{0x00, 0x00, 0x00}}
# define LV_COLOR_MAKE8(r8, g8, b8) {{(uint8_t)((b8 >> 6) & 0x3U), (uint8_t)((g8 >> 5) & 0x7U), (uint8_t)((r8 >> 5) & 0x7U)}}
# define LV_COLOR_SET_R16(c, v) (c).ch.red = (uint8_t)((v) & 0x1FU)
#if LV_COLOR_16_SWAP == 0
# define LV_COLOR_SET_G16(c, v) (c).ch.green = (uint8_t)((v) & 0x3FU)
#else
# define LV_COLOR_SET_G16(c, v) {(c).ch.green_h = (uint8_t)(((v) >> 3) & 0x7); (c).ch.green_l = (uint8_t)((v) & 0x7);}
#endif
# define LV_COLOR_SET_B16(c, v) (c).ch.blue = (uint8_t)((v) & 0x1FU)
# define LV_COLOR_SET_A16(c, v) do {} while(0)
# define LV_COLOR_GET_R16(c) (c).ch.red
#if LV_COLOR_16_SWAP == 0
# define LV_COLOR_GET_G16(c) (c).ch.green
#else
# define LV_COLOR_GET_G16(c) (((c).ch.green_h << 3) + (c).ch.green_l)
#endif
# define LV_COLOR_GET_B16(c) (c).ch.blue
# define LV_COLOR_GET_A16(c) 0xFF
#if LV_COLOR_16_SWAP == 0
# define _LV_COLOR_ZERO_INITIALIZER16 {{0x00, 0x00, 0x00}}
# define LV_COLOR_MAKE16(r8, g8, b8) {{(uint8_t)((b8 >> 3) & 0x1FU), (uint8_t)((g8 >> 2) & 0x3FU), (uint8_t)((r8 >> 3) & 0x1FU)}}
#else
# define _LV_COLOR_ZERO_INITIALIZER16 {{0x00, 0x00, 0x00, 0x00}}
# define LV_COLOR_MAKE16(r8, g8, b8) {{(uint8_t)((g8 >> 5) & 0x7U), (uint8_t)((r8 >> 3) & 0x1FU), (uint8_t)((b8 >> 3) & 0x1FU), (uint8_t)((g8 >> 2) & 0x7U)}}
#endif
# define LV_COLOR_SET_R32(c, v) (c).ch.red = (uint8_t)((v) & 0xFF)
# define LV_COLOR_SET_G32(c, v) (c).ch.green = (uint8_t)((v) & 0xFF)
# define LV_COLOR_SET_B32(c, v) (c).ch.blue = (uint8_t)((v) & 0xFF)
# define LV_COLOR_SET_A32(c, v) (c).ch.alpha = (uint8_t)((v) & 0xFF)
# define LV_COLOR_GET_R32(c) (c).ch.red
# define LV_COLOR_GET_G32(c) (c).ch.green
# define LV_COLOR_GET_B32(c) (c).ch.blue
# define LV_COLOR_GET_A32(c) (c).ch.alpha
# define _LV_COLOR_ZERO_INITIALIZER32 {{0x00, 0x00, 0x00, 0x00}}
# define LV_COLOR_MAKE32(r8, g8, b8) {{b8, g8, r8, 0xff}} /*Fix 0xff alpha*/
/*---------------------------------------
* Macros for the current color depth
* to set/get values of the color channels
*------------------------------------------*/
#define LV_COLOR_SET_R(c, v) LV_CONCAT(LV_COLOR_SET_R, LV_COLOR_DEPTH)(c, v)
#define LV_COLOR_SET_G(c, v) LV_CONCAT(LV_COLOR_SET_G, LV_COLOR_DEPTH)(c, v)
#define LV_COLOR_SET_B(c, v) LV_CONCAT(LV_COLOR_SET_B, LV_COLOR_DEPTH)(c, v)
#define LV_COLOR_SET_A(c, v) LV_CONCAT(LV_COLOR_SET_A, LV_COLOR_DEPTH)(c, v)
#define LV_COLOR_GET_R(c) LV_CONCAT(LV_COLOR_GET_R, LV_COLOR_DEPTH)(c)
#define LV_COLOR_GET_G(c) LV_CONCAT(LV_COLOR_GET_G, LV_COLOR_DEPTH)(c)
#define LV_COLOR_GET_B(c) LV_CONCAT(LV_COLOR_GET_B, LV_COLOR_DEPTH)(c)
#define LV_COLOR_GET_A(c) LV_CONCAT(LV_COLOR_GET_A, LV_COLOR_DEPTH)(c)
#define _LV_COLOR_ZERO_INITIALIZER LV_CONCAT(_LV_COLOR_ZERO_INITIALIZER, LV_COLOR_DEPTH)
#define LV_COLOR_MAKE(r8, g8, b8) LV_CONCAT(LV_COLOR_MAKE, LV_COLOR_DEPTH)(r8, g8, b8)
/**********************
* TYPEDEFS
**********************/
typedef union {
uint8_t full; /*must be declared first to set all bits of byte via initializer list*/
union {
uint8_t blue : 1;
uint8_t green : 1;
uint8_t red : 1;
} ch;
} lv_color1_t;
typedef union {
struct {
uint8_t blue : 2;
uint8_t green : 3;
uint8_t red : 3;
} ch;
uint8_t full;
} lv_color8_t;
typedef union {
struct {
#if LV_COLOR_16_SWAP == 0
uint16_t blue : 5;
uint16_t green : 6;
uint16_t red : 5;
#else
uint16_t green_h : 3;
uint16_t red : 5;
uint16_t blue : 5;
uint16_t green_l : 3;
#endif
} ch;
uint16_t full;
} lv_color16_t;
typedef union {
struct {
uint8_t blue;
uint8_t green;
uint8_t red;
uint8_t alpha;
} ch;
uint32_t full;
} lv_color32_t;
typedef LV_CONCAT3(uint, LV_COLOR_SIZE, _t) lv_color_int_t;
typedef LV_CONCAT3(lv_color, LV_COLOR_DEPTH, _t) lv_color_t;
typedef struct {
uint16_t h;
uint8_t s;
uint8_t v;
} lv_color_hsv_t;
//! @cond Doxygen_Suppress
/*No idea where the guard is required but else throws warnings in the docs*/
typedef uint8_t lv_opa_t;
//! @endcond
struct _lv_color_filter_dsc_t;
typedef lv_color_t (*lv_color_filter_cb_t)(const struct _lv_color_filter_dsc_t *, lv_color_t, lv_opa_t);
typedef struct _lv_color_filter_dsc_t {
lv_color_filter_cb_t filter_cb;
void * user_data;
} lv_color_filter_dsc_t;
typedef enum {
LV_PALETTE_RED,
LV_PALETTE_PINK,
LV_PALETTE_PURPLE,
LV_PALETTE_DEEP_PURPLE,
LV_PALETTE_INDIGO,
LV_PALETTE_BLUE,
LV_PALETTE_LIGHT_BLUE,
LV_PALETTE_CYAN,
LV_PALETTE_TEAL,
LV_PALETTE_GREEN,
LV_PALETTE_LIGHT_GREEN,
LV_PALETTE_LIME,
LV_PALETTE_YELLOW,
LV_PALETTE_AMBER,
LV_PALETTE_ORANGE,
LV_PALETTE_DEEP_ORANGE,
LV_PALETTE_BROWN,
LV_PALETTE_BLUE_GREY,
LV_PALETTE_GREY,
_LV_PALETTE_LAST,
LV_PALETTE_NONE = 0xff,
} lv_palette_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/*In color conversations:
* - When converting to bigger color type the LSB weight of 1 LSB is calculated
* E.g. 16 bit Red has 5 bits
* 8 bit Red has 3 bits
* ----------------------
* 8 bit red LSB = (2^5 - 1) / (2^3 - 1) = 31 / 7 = 4
*
* - When calculating to smaller color type simply shift out the LSBs
* E.g. 8 bit Red has 3 bits
* 16 bit Red has 5 bits
* ----------------------
* Shift right with 5 - 3 = 2
*/
static inline uint8_t lv_color_to1(lv_color_t color)
{
#if LV_COLOR_DEPTH == 1
return color.full;
#elif LV_COLOR_DEPTH == 8
if((LV_COLOR_GET_R(color) & 0x4) || (LV_COLOR_GET_G(color) & 0x4) || (LV_COLOR_GET_B(color) & 0x2)) {
return 1;
}
else {
return 0;
}
#elif LV_COLOR_DEPTH == 16
if((LV_COLOR_GET_R(color) & 0x10) || (LV_COLOR_GET_G(color) & 0x20) || (LV_COLOR_GET_B(color) & 0x10)) {
return 1;
}
else {
return 0;
}
#elif LV_COLOR_DEPTH == 32
if((LV_COLOR_GET_R(color) & 0x80) || (LV_COLOR_GET_G(color) & 0x80) || (LV_COLOR_GET_B(color) & 0x80)) {
return 1;
}
else {
return 0;
}
#endif
}
static inline uint8_t lv_color_to8(lv_color_t color)
{
#if LV_COLOR_DEPTH == 1
if(color.full == 0)
return 0;
else
return 0xFF;
#elif LV_COLOR_DEPTH == 8
return color.full;
#elif LV_COLOR_DEPTH == 16
lv_color8_t ret;
LV_COLOR_SET_R8(ret, LV_COLOR_GET_R(color) >> 2); /*5 - 3 = 2*/
LV_COLOR_SET_G8(ret, LV_COLOR_GET_G(color) >> 3); /*6 - 3 = 3*/
LV_COLOR_SET_B8(ret, LV_COLOR_GET_B(color) >> 3); /*5 - 2 = 3*/
return ret.full;
#elif LV_COLOR_DEPTH == 32
lv_color8_t ret;
LV_COLOR_SET_R8(ret, LV_COLOR_GET_R(color) >> 5); /*8 - 3 = 5*/
LV_COLOR_SET_G8(ret, LV_COLOR_GET_G(color) >> 5); /*8 - 3 = 5*/
LV_COLOR_SET_B8(ret, LV_COLOR_GET_B(color) >> 6); /*8 - 2 = 6*/
return ret.full;
#endif
}
static inline uint16_t lv_color_to16(lv_color_t color)
{
#if LV_COLOR_DEPTH == 1
if(color.full == 0)
return 0;
else
return 0xFFFF;
#elif LV_COLOR_DEPTH == 8
lv_color16_t ret;
LV_COLOR_SET_R16(ret, LV_COLOR_GET_R(color) * 4); /*(2^5 - 1)/(2^3 - 1) = 31/7 = 4*/
LV_COLOR_SET_G16(ret, LV_COLOR_GET_G(color) * 9); /*(2^6 - 1)/(2^3 - 1) = 63/7 = 9*/
LV_COLOR_SET_B16(ret, LV_COLOR_GET_B(color) * 10); /*(2^5 - 1)/(2^2 - 1) = 31/3 = 10*/
return ret.full;
#elif LV_COLOR_DEPTH == 16
return color.full;
#elif LV_COLOR_DEPTH == 32
lv_color16_t ret;
LV_COLOR_SET_R16(ret, LV_COLOR_GET_R(color) >> 3); /*8 - 5 = 3*/
LV_COLOR_SET_G16(ret, LV_COLOR_GET_G(color) >> 2); /*8 - 6 = 2*/
LV_COLOR_SET_B16(ret, LV_COLOR_GET_B(color) >> 3); /*8 - 5 = 3*/
return ret.full;
#endif
}
static inline uint32_t lv_color_to32(lv_color_t color)
{
#if LV_COLOR_DEPTH == 1
if(color.full == 0)
return 0xFF000000;
else
return 0xFFFFFFFF;
#elif LV_COLOR_DEPTH == 8
lv_color32_t ret;
LV_COLOR_SET_R32(ret, LV_COLOR_GET_R(color) * 36); /*(2^8 - 1)/(2^3 - 1) = 255/7 = 36*/
LV_COLOR_SET_G32(ret, LV_COLOR_GET_G(color) * 36); /*(2^8 - 1)/(2^3 - 1) = 255/7 = 36*/
LV_COLOR_SET_B32(ret, LV_COLOR_GET_B(color) * 85); /*(2^8 - 1)/(2^2 - 1) = 255/3 = 85*/
LV_COLOR_SET_A32(ret, 0xFF);
return ret.full;
#elif LV_COLOR_DEPTH == 16
/**
* The floating point math for conversion is:
* valueto = valuefrom * ( (2^bitsto - 1) / (float)(2^bitsfrom - 1) )
* The faster integer math for conversion is:
* valueto = ( valuefrom * multiplier + adder ) >> divisor
* multiplier = FLOOR( ( (2^bitsto - 1) << divisor ) / (float)(2^bitsfrom - 1) )
*
* Find the first divisor where ( adder >> divisor ) <= 0
*
* 5-bit to 8-bit: ( 31 * multiplier + adder ) >> divisor = 255
* divisor multiplier adder min (0) max (31)
* 0 8 7 7 255
* 1 16 14 7 255
* 2 32 28 7 255
* 3 65 25 3 255
* 4 131 19 1 255
* 5 263 7 0 255
*
* 6-bit to 8-bit: 255 = ( 63 * multiplier + adder ) >> divisor
* divisor multiplier adder min (0) max (63)
* 0 4 3 3 255
* 1 8 6 3 255
* 2 16 12 3 255
* 3 32 24 3 255
* 4 64 48 3 255
* 5 129 33 1 255
* 6 259 3 0 255
*/
lv_color32_t ret;
LV_COLOR_SET_R32(ret, (LV_COLOR_GET_R(color) * 263 + 7) >> 5);
LV_COLOR_SET_G32(ret, (LV_COLOR_GET_G(color) * 259 + 3) >> 6);
LV_COLOR_SET_B32(ret, (LV_COLOR_GET_B(color) * 263 + 7) >> 5);
LV_COLOR_SET_A32(ret, 0xFF);
return ret.full;
#elif LV_COLOR_DEPTH == 32
return color.full;
#endif
}
//! @cond Doxygen_Suppress
/**
* Mix two colors with a given ratio.
* @param c1 the first color to mix (usually the foreground)
* @param c2 the second color to mix (usually the background)
* @param mix The ratio of the colors. 0: full `c2`, 255: full `c1`, 127: half `c1` and half`c2`
* @return the mixed color
*/
LV_ATTRIBUTE_FAST_MEM static inline lv_color_t lv_color_mix(lv_color_t c1, lv_color_t c2, uint8_t mix)
{
lv_color_t ret;
#if LV_COLOR_DEPTH == 16 && LV_COLOR_MIX_ROUND_OFS == 0
#if LV_COLOR_16_SWAP == 1
c1.full = c1.full << 8 | c1.full >> 8;
c2.full = c2.full << 8 | c2.full >> 8;
#endif
/*Source: https://stackoverflow.com/a/50012418/1999969*/
mix = (uint32_t)((uint32_t)mix + 4) >> 3;
uint32_t bg = (uint32_t)((uint32_t)c2.full | ((uint32_t)c2.full << 16)) &
0x7E0F81F; /*0b00000111111000001111100000011111*/
uint32_t fg = (uint32_t)((uint32_t)c1.full | ((uint32_t)c1.full << 16)) & 0x7E0F81F;
uint32_t result = ((((fg - bg) * mix) >> 5) + bg) & 0x7E0F81F;
ret.full = (uint16_t)((result >> 16) | result);
#if LV_COLOR_16_SWAP == 1
ret.full = ret.full << 8 | ret.full >> 8;
#endif
#elif LV_COLOR_DEPTH != 1
/*LV_COLOR_DEPTH == 8, 16 or 32*/
LV_COLOR_SET_R(ret, LV_UDIV255((uint16_t)LV_COLOR_GET_R(c1) * mix + LV_COLOR_GET_R(c2) *
(255 - mix) + LV_COLOR_MIX_ROUND_OFS));
LV_COLOR_SET_G(ret, LV_UDIV255((uint16_t)LV_COLOR_GET_G(c1) * mix + LV_COLOR_GET_G(c2) *
(255 - mix) + LV_COLOR_MIX_ROUND_OFS));
LV_COLOR_SET_B(ret, LV_UDIV255((uint16_t)LV_COLOR_GET_B(c1) * mix + LV_COLOR_GET_B(c2) *
(255 - mix) + LV_COLOR_MIX_ROUND_OFS));
LV_COLOR_SET_A(ret, 0xFF);
#else
/*LV_COLOR_DEPTH == 1*/
ret.full = mix > LV_OPA_50 ? c1.full : c2.full;
#endif
return ret;
}
LV_ATTRIBUTE_FAST_MEM static inline void lv_color_premult(lv_color_t c, uint8_t mix, uint16_t * out)
{
#if LV_COLOR_DEPTH != 1
out[0] = (uint16_t)LV_COLOR_GET_R(c) * mix;
out[1] = (uint16_t)LV_COLOR_GET_G(c) * mix;
out[2] = (uint16_t)LV_COLOR_GET_B(c) * mix;
#else
(void) mix;
/*Pre-multiplication can't be used with 1 bpp*/
out[0] = LV_COLOR_GET_R(c);
out[1] = LV_COLOR_GET_G(c);
out[2] = LV_COLOR_GET_B(c);
#endif
}
/**
* Mix two colors with a given ratio. It runs faster then `lv_color_mix` but requires some pre computation.
* @param premult_c1 The first color. Should be preprocessed with `lv_color_premult(c1)`
* @param c2 The second color. As it is no pre computation required on it
* @param mix The ratio of the colors. 0: full `c1`, 255: full `c2`, 127: half `c1` and half `c2`.
* Should be modified like mix = `255 - mix`
* @return the mixed color
* @note 255 won't give clearly `c1`.
*/
LV_ATTRIBUTE_FAST_MEM static inline lv_color_t lv_color_mix_premult(uint16_t * premult_c1, lv_color_t c2, uint8_t mix)
{
lv_color_t ret;
#if LV_COLOR_DEPTH != 1
/*LV_COLOR_DEPTH == 8 or 32*/
LV_COLOR_SET_R(ret, LV_UDIV255(premult_c1[0] + LV_COLOR_GET_R(c2) * mix + LV_COLOR_MIX_ROUND_OFS));
LV_COLOR_SET_G(ret, LV_UDIV255(premult_c1[1] + LV_COLOR_GET_G(c2) * mix + LV_COLOR_MIX_ROUND_OFS));
LV_COLOR_SET_B(ret, LV_UDIV255(premult_c1[2] + LV_COLOR_GET_B(c2) * mix + LV_COLOR_MIX_ROUND_OFS));
LV_COLOR_SET_A(ret, 0xFF);
#else
/*LV_COLOR_DEPTH == 1*/
/*Restore color1*/
lv_color_t c1;
LV_COLOR_SET_R(c1, premult_c1[0]);
LV_COLOR_SET_G(c1, premult_c1[1]);
LV_COLOR_SET_B(c1, premult_c1[2]);
ret.full = mix > LV_OPA_50 ? c2.full : c1.full;
#endif
return ret;
}
/**
* Mix two colors. Both color can have alpha value.
* @param bg_color background color
* @param bg_opa alpha of the background color
* @param fg_color foreground color
* @param fg_opa alpha of the foreground color
* @param res_color the result color
* @param res_opa the result opacity
*/
LV_ATTRIBUTE_FAST_MEM static inline void lv_color_mix_with_alpha(lv_color_t bg_color, lv_opa_t bg_opa,
lv_color_t fg_color, lv_opa_t fg_opa,
lv_color_t * res_color, lv_opa_t * res_opa)
{
/*Pick the foreground if it's fully opaque or the Background is fully transparent*/
if(fg_opa >= LV_OPA_MAX || bg_opa <= LV_OPA_MIN) {
res_color->full = fg_color.full;
*res_opa = fg_opa;
}
/*Transparent foreground: use the Background*/
else if(fg_opa <= LV_OPA_MIN) {
res_color->full = bg_color.full;
*res_opa = bg_opa;
}
/*Opaque background: use simple mix*/
else if(bg_opa >= LV_OPA_MAX) {
*res_color = lv_color_mix(fg_color, bg_color, fg_opa);
*res_opa = LV_OPA_COVER;
}
/*Both colors have alpha. Expensive calculation need to be applied*/
else {
/*Save the parameters and the result. If they will be asked again don't compute again*/
static lv_opa_t fg_opa_save = 0;
static lv_opa_t bg_opa_save = 0;
static lv_color_t fg_color_save = _LV_COLOR_ZERO_INITIALIZER;
static lv_color_t bg_color_save = _LV_COLOR_ZERO_INITIALIZER;
static lv_color_t res_color_saved = _LV_COLOR_ZERO_INITIALIZER;
static lv_opa_t res_opa_saved = 0;
if(fg_opa != fg_opa_save || bg_opa != bg_opa_save || fg_color.full != fg_color_save.full ||
bg_color.full != bg_color_save.full) {
fg_opa_save = fg_opa;
bg_opa_save = bg_opa;
fg_color_save.full = fg_color.full;
bg_color_save.full = bg_color.full;
/*Info:
* https://en.wikipedia.org/wiki/Alpha_compositing#Analytical_derivation_of_the_over_operator*/
res_opa_saved = 255 - ((uint16_t)((uint16_t)(255 - fg_opa) * (255 - bg_opa)) >> 8);
LV_ASSERT(res_opa_saved != 0);
lv_opa_t ratio = (uint16_t)((uint16_t)fg_opa * 255) / res_opa_saved;
res_color_saved = lv_color_mix(fg_color, bg_color, ratio);
}
res_color->full = res_color_saved.full;
*res_opa = res_opa_saved;
}
}
//! @endcond
/**
* Get the brightness of a color
* @param color a color
* @return the brightness [0..255]
*/
static inline uint8_t lv_color_brightness(lv_color_t color)
{
lv_color32_t c32;
c32.full = lv_color_to32(color);
uint16_t bright = (uint16_t)(3u * LV_COLOR_GET_R32(c32) + LV_COLOR_GET_B32(c32) + 4u * LV_COLOR_GET_G32(c32));
return (uint8_t)(bright >> 3);
}
static inline lv_color_t lv_color_make(uint8_t r, uint8_t g, uint8_t b)
{
return _LV_COLOR_MAKE_TYPE_HELPER LV_COLOR_MAKE(r, g, b);
}
static inline lv_color_t lv_color_hex(uint32_t c)
{
#if LV_COLOR_DEPTH == 16
lv_color_t r;
#if LV_COLOR_16_SWAP == 0
/* Convert a 4 bytes per pixel in format ARGB32 to R5G6B5 format
naive way (by calling lv_color_make with components):
r = ((c & 0xFF0000) >> 19)
g = ((c & 0xFF00) >> 10)
b = ((c & 0xFF) >> 3)
rgb565 = (r << 11) | (g << 5) | b
That's 3 mask, 5 bitshift and 2 or operations
A bit better:
r = ((c & 0xF80000) >> 8)
g = ((c & 0xFC00) >> 5)
b = ((c & 0xFF) >> 3)
rgb565 = r | g | b
That's 3 mask, 3 bitshifts and 2 or operations */
r.full = (uint16_t)(((c & 0xF80000) >> 8) | ((c & 0xFC00) >> 5) | ((c & 0xFF) >> 3));
#else
/* We want: rrrr rrrr GGGg gggg bbbb bbbb => gggb bbbb rrrr rGGG */
r.full = (uint16_t)(((c & 0xF80000) >> 16) | ((c & 0xFC00) >> 13) | ((c & 0x1C00) << 3) | ((c & 0xF8) << 5));
#endif
return r;
#elif LV_COLOR_DEPTH == 32
lv_color_t r;
r.full = c | 0xFF000000;
return r;
#else /*LV_COLOR_DEPTH == 8*/
return lv_color_make((uint8_t)((c >> 16) & 0xFF), (uint8_t)((c >> 8) & 0xFF), (uint8_t)(c & 0xFF));
#endif
}
static inline lv_color_t lv_color_hex3(uint32_t c)
{
return lv_color_make((uint8_t)(((c >> 4) & 0xF0) | ((c >> 8) & 0xF)), (uint8_t)((c & 0xF0) | ((c & 0xF0) >> 4)),
(uint8_t)((c & 0xF) | ((c & 0xF) << 4)));
}
static inline void lv_color_filter_dsc_init(lv_color_filter_dsc_t * dsc, lv_color_filter_cb_t cb)
{
dsc->filter_cb = cb;
}
//! @cond Doxygen_Suppress
//!
LV_ATTRIBUTE_FAST_MEM void lv_color_fill(lv_color_t * buf, lv_color_t color, uint32_t px_num);
//! @endcond
lv_color_t lv_color_lighten(lv_color_t c, lv_opa_t lvl);
lv_color_t lv_color_darken(lv_color_t c, lv_opa_t lvl);
lv_color_t lv_color_change_lightness(lv_color_t c, lv_opa_t lvl);
/**
* Convert a HSV color to RGB
* @param h hue [0..359]
* @param s saturation [0..100]
* @param v value [0..100]
* @return the given RGB color in RGB (with LV_COLOR_DEPTH depth)
*/
lv_color_t lv_color_hsv_to_rgb(uint16_t h, uint8_t s, uint8_t v);
/**
* Convert a 32-bit RGB color to HSV
* @param r8 8-bit red
* @param g8 8-bit green
* @param b8 8-bit blue
* @return the given RGB color in HSV
*/
lv_color_hsv_t lv_color_rgb_to_hsv(uint8_t r8, uint8_t g8, uint8_t b8);
/**
* Convert a color to HSV
* @param color color
* @return the given color in HSV
*/
lv_color_hsv_t lv_color_to_hsv(lv_color_t color);
/**
* Just a wrapper around LV_COLOR_CHROMA_KEY because it might be more convenient to use a function in some cases
* @return LV_COLOR_CHROMA_KEY
*/
static inline lv_color_t lv_color_chroma_key(void)
{
return LV_COLOR_CHROMA_KEY;
}
/**********************
* PREDEFINED COLORS
**********************/
/*Source: https://vuetifyjs.com/en/styles/colors/#material-colors*/
lv_color_t lv_palette_main(lv_palette_t p);
static inline lv_color_t lv_color_white(void)
{
return lv_color_make(0xff, 0xff, 0xff);
}
static inline lv_color_t lv_color_black(void)
{
return lv_color_make(0x00, 0x0, 0x00);
}
lv_color_t lv_palette_lighten(lv_palette_t p, uint8_t lvl);
lv_color_t lv_palette_darken(lv_palette_t p, uint8_t lvl);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_COLOR_H*/

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/**
* @file lv_fs.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_fs.h"
#include "../misc/lv_assert.h"
#include "lv_ll.h"
#include <string.h>
#include "lv_gc.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static const char * lv_fs_get_real_path(const char * path);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void _lv_fs_init(void)
{
_lv_ll_init(&LV_GC_ROOT(_lv_fsdrv_ll), sizeof(lv_fs_drv_t *));
}
bool lv_fs_is_ready(char letter)
{
lv_fs_drv_t * drv = lv_fs_get_drv(letter);
if(drv == NULL) return false; /*An unknown driver in not ready*/
if(drv->ready_cb == NULL) return true; /*Assume the driver is always ready if no handler provided*/
return drv->ready_cb(drv);
}
lv_fs_res_t lv_fs_open(lv_fs_file_t * file_p, const char * path, lv_fs_mode_t mode)
{
if(path == NULL) {
LV_LOG_WARN("Can't open file: path is NULL");
return LV_FS_RES_INV_PARAM;
}
char letter = path[0];
lv_fs_drv_t * drv = lv_fs_get_drv(letter);
if(drv == NULL) {
LV_LOG_WARN("Can't open file (%s): unknown driver letter", path);
return LV_FS_RES_NOT_EX;
}
if(drv->ready_cb) {
if(drv->ready_cb(drv) == false) {
LV_LOG_WARN("Can't open file (%s): driver not ready", path);
return LV_FS_RES_HW_ERR;
}
}
if(drv->open_cb == NULL) {
LV_LOG_WARN("Can't open file (%s): open function not exists", path);
return LV_FS_RES_NOT_IMP;
}
const char * real_path = lv_fs_get_real_path(path);
void * file_d = drv->open_cb(drv, real_path, mode);
if(file_d == NULL || file_d == (void *)(-1)) {
return LV_FS_RES_UNKNOWN;
}
file_p->drv = drv;
file_p->file_d = file_d;
if(drv->cache_size) {
file_p->cache = lv_mem_alloc(sizeof(lv_fs_file_cache_t));
LV_ASSERT_MALLOC(file_p->cache);
lv_memset_00(file_p->cache, sizeof(lv_fs_file_cache_t));
file_p->cache->start = UINT32_MAX; /*Set an invalid range by default*/
file_p->cache->end = UINT32_MAX - 1;
}
return LV_FS_RES_OK;
}
lv_fs_res_t lv_fs_close(lv_fs_file_t * file_p)
{
if(file_p->drv == NULL) {
return LV_FS_RES_INV_PARAM;
}
if(file_p->drv->close_cb == NULL) {
return LV_FS_RES_NOT_IMP;
}
lv_fs_res_t res = file_p->drv->close_cb(file_p->drv, file_p->file_d);
if(file_p->drv->cache_size && file_p->cache) {
if(file_p->cache->buffer) {
lv_mem_free(file_p->cache->buffer);
}
lv_mem_free(file_p->cache);
}
file_p->file_d = NULL;
file_p->drv = NULL;
file_p->cache = NULL;
return res;
}
static lv_fs_res_t lv_fs_read_cached(lv_fs_file_t * file_p, char * buf, uint32_t btr, uint32_t * br)
{
lv_fs_res_t res = LV_FS_RES_OK;
uint32_t file_position = file_p->cache->file_position;
uint32_t start = file_p->cache->start;
uint32_t end = file_p->cache->end;
char * buffer = file_p->cache->buffer;
uint16_t buffer_size = file_p->drv->cache_size;
if(start <= file_position && file_position < end) {
/* Data can be read from cache buffer */
uint16_t buffer_offset = file_position - start;
uint32_t buffer_remaining_length = LV_MIN((uint32_t)buffer_size - buffer_offset, (uint32_t)end - file_position);
if(btr <= buffer_remaining_length) {
/*Data is in cache buffer, and buffer end not reached, no need to read from FS*/
lv_memcpy(buf, buffer + buffer_offset, btr);
*br = btr;
}
else {
/*First part of data is in cache buffer, but we need to read rest of data from FS*/
lv_memcpy(buf, buffer + buffer_offset, buffer_remaining_length);
uint32_t bytes_read_to_buffer = 0;
if(btr > buffer_size) {
/*If remaining data chuck is bigger than buffer size, then do not use cache, instead read it directly from FS*/
res = file_p->drv->read_cb(file_p->drv, file_p->file_d, (void *)(buf + buffer_remaining_length),
btr - buffer_remaining_length, &bytes_read_to_buffer);
}
else {
/*If remaining data chunk is smaller than buffer size, then read into cache buffer*/
res = file_p->drv->read_cb(file_p->drv, file_p->file_d, (void *)buffer, buffer_size, &bytes_read_to_buffer);
file_p->cache->start = file_p->cache->end;
file_p->cache->end = file_p->cache->start + bytes_read_to_buffer;
uint16_t data_chunk_remaining = LV_MIN(btr - buffer_remaining_length, bytes_read_to_buffer);
lv_memcpy(buf + buffer_remaining_length, buffer, data_chunk_remaining);
}
*br = LV_MIN(buffer_remaining_length + bytes_read_to_buffer, btr);
}
}
else {
/*Data is not in cache buffer*/
if(btr > buffer_size) {
/*If bigger data is requested, then do not use cache, instead read it directly*/
res = file_p->drv->read_cb(file_p->drv, file_p->file_d, (void *)buf, btr, br);
}
else {
/*If small data is requested, then read from FS into cache buffer*/
if(buffer == NULL) {
file_p->cache->buffer = lv_mem_alloc(buffer_size);
LV_ASSERT_MALLOC(file_p->cache->buffer);
buffer = file_p->cache->buffer;
}
uint32_t bytes_read_to_buffer = 0;
res = file_p->drv->read_cb(file_p->drv, file_p->file_d, (void *)buffer, buffer_size, &bytes_read_to_buffer);
file_p->cache->start = file_position;
file_p->cache->end = file_p->cache->start + bytes_read_to_buffer;
*br = LV_MIN(btr, bytes_read_to_buffer);
lv_memcpy(buf, buffer, *br);
}
}
if(res == LV_FS_RES_OK) {
file_p->cache->file_position += *br;
}
return res;
}
lv_fs_res_t lv_fs_read(lv_fs_file_t * file_p, void * buf, uint32_t btr, uint32_t * br)
{
if(br != NULL) *br = 0;
if(file_p->drv == NULL) return LV_FS_RES_INV_PARAM;
if(file_p->drv->read_cb == NULL) return LV_FS_RES_NOT_IMP;
uint32_t br_tmp = 0;
lv_fs_res_t res;
if(file_p->drv->cache_size) {
res = lv_fs_read_cached(file_p, (char *)buf, btr, &br_tmp);
}
else {
res = file_p->drv->read_cb(file_p->drv, file_p->file_d, buf, btr, &br_tmp);
}
if(br != NULL) *br = br_tmp;
return res;
}
lv_fs_res_t lv_fs_write(lv_fs_file_t * file_p, const void * buf, uint32_t btw, uint32_t * bw)
{
if(bw != NULL) *bw = 0;
if(file_p->drv == NULL) {
return LV_FS_RES_INV_PARAM;
}
if(file_p->drv->write_cb == NULL) {
return LV_FS_RES_NOT_IMP;
}
uint32_t bw_tmp = 0;
lv_fs_res_t res = file_p->drv->write_cb(file_p->drv, file_p->file_d, buf, btw, &bw_tmp);
if(bw != NULL) *bw = bw_tmp;
return res;
}
lv_fs_res_t lv_fs_seek(lv_fs_file_t * file_p, uint32_t pos, lv_fs_whence_t whence)
{
if(file_p->drv == NULL) {
return LV_FS_RES_INV_PARAM;
}
if(file_p->drv->seek_cb == NULL) {
return LV_FS_RES_NOT_IMP;
}
lv_fs_res_t res = LV_FS_RES_OK;
if(file_p->drv->cache_size) {
switch(whence) {
case LV_FS_SEEK_SET: {
file_p->cache->file_position = pos;
/*FS seek if new position is outside cache buffer*/
if(file_p->cache->file_position < file_p->cache->start || file_p->cache->file_position > file_p->cache->end) {
res = file_p->drv->seek_cb(file_p->drv, file_p->file_d, file_p->cache->file_position, LV_FS_SEEK_SET);
}
break;
}
case LV_FS_SEEK_CUR: {
file_p->cache->file_position += pos;
/*FS seek if new position is outside cache buffer*/
if(file_p->cache->file_position < file_p->cache->start || file_p->cache->file_position > file_p->cache->end) {
res = file_p->drv->seek_cb(file_p->drv, file_p->file_d, file_p->cache->file_position, LV_FS_SEEK_SET);
}
break;
}
case LV_FS_SEEK_END: {
/*Because we don't know the file size, we do a little trick: do a FS seek, then get new file position from FS*/
res = file_p->drv->seek_cb(file_p->drv, file_p->file_d, pos, whence);
if(res == LV_FS_RES_OK) {
uint32_t tmp_position;
res = file_p->drv->tell_cb(file_p->drv, file_p->file_d, &tmp_position);
if(res == LV_FS_RES_OK) {
file_p->cache->file_position = tmp_position;
}
}
break;
}
}
}
else {
res = file_p->drv->seek_cb(file_p->drv, file_p->file_d, pos, whence);
}
return res;
}
lv_fs_res_t lv_fs_tell(lv_fs_file_t * file_p, uint32_t * pos)
{
if(file_p->drv == NULL) {
*pos = 0;
return LV_FS_RES_INV_PARAM;
}
if(file_p->drv->tell_cb == NULL) {
*pos = 0;
return LV_FS_RES_NOT_IMP;
}
lv_fs_res_t res;
if(file_p->drv->cache_size) {
*pos = file_p->cache->file_position;
res = LV_FS_RES_OK;
}
else {
res = file_p->drv->tell_cb(file_p->drv, file_p->file_d, pos);
}
return res;
}
lv_fs_res_t lv_fs_dir_open(lv_fs_dir_t * rddir_p, const char * path)
{
if(path == NULL) return LV_FS_RES_INV_PARAM;
char letter = path[0];
lv_fs_drv_t * drv = lv_fs_get_drv(letter);
if(drv == NULL) {
return LV_FS_RES_NOT_EX;
}
if(drv->ready_cb) {
if(drv->ready_cb(drv) == false) {
return LV_FS_RES_HW_ERR;
}
}
if(drv->dir_open_cb == NULL) {
return LV_FS_RES_NOT_IMP;
}
const char * real_path = lv_fs_get_real_path(path);
void * dir_d = drv->dir_open_cb(drv, real_path);
if(dir_d == NULL || dir_d == (void *)(-1)) {
return LV_FS_RES_UNKNOWN;
}
rddir_p->drv = drv;
rddir_p->dir_d = dir_d;
return LV_FS_RES_OK;
}
lv_fs_res_t lv_fs_dir_read(lv_fs_dir_t * rddir_p, char * fn)
{
if(rddir_p->drv == NULL || rddir_p->dir_d == NULL) {
fn[0] = '\0';
return LV_FS_RES_INV_PARAM;
}
if(rddir_p->drv->dir_read_cb == NULL) {
fn[0] = '\0';
return LV_FS_RES_NOT_IMP;
}
lv_fs_res_t res = rddir_p->drv->dir_read_cb(rddir_p->drv, rddir_p->dir_d, fn);
return res;
}
lv_fs_res_t lv_fs_dir_close(lv_fs_dir_t * rddir_p)
{
if(rddir_p->drv == NULL || rddir_p->dir_d == NULL) {
return LV_FS_RES_INV_PARAM;
}
if(rddir_p->drv->dir_close_cb == NULL) {
return LV_FS_RES_NOT_IMP;
}
lv_fs_res_t res = rddir_p->drv->dir_close_cb(rddir_p->drv, rddir_p->dir_d);
rddir_p->dir_d = NULL;
rddir_p->drv = NULL;
return res;
}
void lv_fs_drv_init(lv_fs_drv_t * drv)
{
lv_memset_00(drv, sizeof(lv_fs_drv_t));
}
void lv_fs_drv_register(lv_fs_drv_t * drv_p)
{
/*Save the new driver*/
lv_fs_drv_t ** new_drv;
new_drv = _lv_ll_ins_head(&LV_GC_ROOT(_lv_fsdrv_ll));
LV_ASSERT_MALLOC(new_drv);
if(new_drv == NULL) return;
*new_drv = drv_p;
}
lv_fs_drv_t * lv_fs_get_drv(char letter)
{
lv_fs_drv_t ** drv;
_LV_LL_READ(&LV_GC_ROOT(_lv_fsdrv_ll), drv) {
if((*drv)->letter == letter) {
return *drv;
}
}
return NULL;
}
char * lv_fs_get_letters(char * buf)
{
lv_fs_drv_t ** drv;
uint8_t i = 0;
_LV_LL_READ(&LV_GC_ROOT(_lv_fsdrv_ll), drv) {
buf[i] = (*drv)->letter;
i++;
}
buf[i] = '\0';
return buf;
}
const char * lv_fs_get_ext(const char * fn)
{
size_t i;
for(i = strlen(fn); i > 0; i--) {
if(fn[i] == '.') {
return &fn[i + 1];
}
else if(fn[i] == '/' || fn[i] == '\\') {
return ""; /*No extension if a '\' or '/' found*/
}
}
return ""; /*Empty string if no '.' in the file name.*/
}
char * lv_fs_up(char * path)
{
size_t len = strlen(path);
if(len == 0) return path;
len--; /*Go before the trailing '\0'*/
/*Ignore trailing '/' or '\'*/
while(path[len] == '/' || path[len] == '\\') {
path[len] = '\0';
if(len > 0)
len--;
else
return path;
}
size_t i;
for(i = len; i > 0; i--) {
if(path[i] == '/' || path[i] == '\\') break;
}
if(i > 0) path[i] = '\0';
return path;
}
const char * lv_fs_get_last(const char * path)
{
size_t len = strlen(path);
if(len == 0) return path;
len--; /*Go before the trailing '\0'*/
/*Ignore trailing '/' or '\'*/
while(path[len] == '/' || path[len] == '\\') {
if(len > 0)
len--;
else
return path;
}
size_t i;
for(i = len; i > 0; i--) {
if(path[i] == '/' || path[i] == '\\') break;
}
/*No '/' or '\' in the path so return with path itself*/
if(i == 0) return path;
return &path[i + 1];
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Skip the driver letter and the possible : after the letter
* @param path path string (E.g. S:/folder/file.txt)
* @return pointer to the beginning of the real path (E.g. /folder/file.txt)
*/
static const char * lv_fs_get_real_path(const char * path)
{
path++; /*Ignore the driver letter*/
if(*path == ':') path++;
return path;
}

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/**
* @file lv_fs.h
*
*/
#ifndef LV_FS_H
#define LV_FS_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include <stdint.h>
#include <stdbool.h>
/*********************
* DEFINES
*********************/
#define LV_FS_MAX_FN_LENGTH 64
#define LV_FS_MAX_PATH_LENGTH 256
/**********************
* TYPEDEFS
**********************/
/**
* Errors in the file system module.
*/
enum {
LV_FS_RES_OK = 0,
LV_FS_RES_HW_ERR, /*Low level hardware error*/
LV_FS_RES_FS_ERR, /*Error in the file system structure*/
LV_FS_RES_NOT_EX, /*Driver, file or directory is not exists*/
LV_FS_RES_FULL, /*Disk full*/
LV_FS_RES_LOCKED, /*The file is already opened*/
LV_FS_RES_DENIED, /*Access denied. Check 'fs_open' modes and write protect*/
LV_FS_RES_BUSY, /*The file system now can't handle it, try later*/
LV_FS_RES_TOUT, /*Process time outed*/
LV_FS_RES_NOT_IMP, /*Requested function is not implemented*/
LV_FS_RES_OUT_OF_MEM, /*Not enough memory for an internal operation*/
LV_FS_RES_INV_PARAM, /*Invalid parameter among arguments*/
LV_FS_RES_UNKNOWN, /*Other unknown error*/
};
typedef uint8_t lv_fs_res_t;
/**
* File open mode.
*/
enum {
LV_FS_MODE_WR = 0x01,
LV_FS_MODE_RD = 0x02,
};
typedef uint8_t lv_fs_mode_t;
/**
* Seek modes.
*/
typedef enum {
LV_FS_SEEK_SET = 0x00, /**< Set the position from absolutely (from the start of file)*/
LV_FS_SEEK_CUR = 0x01, /**< Set the position from the current position*/
LV_FS_SEEK_END = 0x02, /**< Set the position from the end of the file*/
} lv_fs_whence_t;
typedef struct _lv_fs_drv_t {
char letter;
uint16_t cache_size;
bool (*ready_cb)(struct _lv_fs_drv_t * drv);
void * (*open_cb)(struct _lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode);
lv_fs_res_t (*close_cb)(struct _lv_fs_drv_t * drv, void * file_p);
lv_fs_res_t (*read_cb)(struct _lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
lv_fs_res_t (*write_cb)(struct _lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw);
lv_fs_res_t (*seek_cb)(struct _lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence);
lv_fs_res_t (*tell_cb)(struct _lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
void * (*dir_open_cb)(struct _lv_fs_drv_t * drv, const char * path);
lv_fs_res_t (*dir_read_cb)(struct _lv_fs_drv_t * drv, void * rddir_p, char * fn);
lv_fs_res_t (*dir_close_cb)(struct _lv_fs_drv_t * drv, void * rddir_p);
#if LV_USE_USER_DATA
void * user_data; /**< Custom file user data*/
#endif
} lv_fs_drv_t;
typedef struct {
uint32_t start;
uint32_t end;
uint32_t file_position;
void * buffer;
} lv_fs_file_cache_t;
typedef struct {
void * file_d;
lv_fs_drv_t * drv;
lv_fs_file_cache_t * cache;
} lv_fs_file_t;
typedef struct {
void * dir_d;
lv_fs_drv_t * drv;
} lv_fs_dir_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Initialize the File system interface
*/
void _lv_fs_init(void);
/**
* Initialize a file system driver with default values.
* It is used to surly have known values in the fields ant not memory junk.
* After it you can set the fields.
* @param drv pointer to driver variable to initialize
*/
void lv_fs_drv_init(lv_fs_drv_t * drv);
/**
* Add a new drive
* @param drv pointer to an lv_fs_drv_t structure which is inited with the
* corresponding function pointers. Only pointer is saved, so the
* driver should be static or dynamically allocated.
*/
void lv_fs_drv_register(lv_fs_drv_t * drv);
/**
* Give a pointer to a driver from its letter
* @param letter the driver letter
* @return pointer to a driver or NULL if not found
*/
lv_fs_drv_t * lv_fs_get_drv(char letter);
/**
* Test if a drive is ready or not. If the `ready` function was not initialized `true` will be
* returned.
* @param letter letter of the drive
* @return true: drive is ready; false: drive is not ready
*/
bool lv_fs_is_ready(char letter);
/**
* Open a file
* @param file_p pointer to a lv_fs_file_t variable
* @param path path to the file beginning with the driver letter (e.g. S:/folder/file.txt)
* @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
lv_fs_res_t lv_fs_open(lv_fs_file_t * file_p, const char * path, lv_fs_mode_t mode);
/**
* Close an already opened file
* @param file_p pointer to a lv_fs_file_t variable
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
lv_fs_res_t lv_fs_close(lv_fs_file_t * file_p);
/**
* Read from a file
* @param file_p pointer to a lv_fs_file_t variable
* @param buf pointer to a buffer where the read bytes are stored
* @param btr Bytes To Read
* @param br the number of real read bytes (Bytes Read). NULL if unused.
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
lv_fs_res_t lv_fs_read(lv_fs_file_t * file_p, void * buf, uint32_t btr, uint32_t * br);
/**
* Write into a file
* @param file_p pointer to a lv_fs_file_t variable
* @param buf pointer to a buffer with the bytes to write
* @param btw Bytes To Write
* @param bw the number of real written bytes (Bytes Written). NULL if unused.
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
lv_fs_res_t lv_fs_write(lv_fs_file_t * file_p, const void * buf, uint32_t btw, uint32_t * bw);
/**
* Set the position of the 'cursor' (read write pointer) in a file
* @param file_p pointer to a lv_fs_file_t variable
* @param pos the new position expressed in bytes index (0: start of file)
* @param whence tells from where set the position. See @lv_fs_whence_t
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
lv_fs_res_t lv_fs_seek(lv_fs_file_t * file_p, uint32_t pos, lv_fs_whence_t whence);
/**
* Give the position of the read write pointer
* @param file_p pointer to a lv_fs_file_t variable
* @param pos_p pointer to store the position of the read write pointer
* @return LV_FS_RES_OK or any error from 'fs_res_t'
*/
lv_fs_res_t lv_fs_tell(lv_fs_file_t * file_p, uint32_t * pos);
/**
* Initialize a 'fs_dir_t' variable for directory reading
* @param rddir_p pointer to a 'lv_fs_dir_t' variable
* @param path path to a directory
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
lv_fs_res_t lv_fs_dir_open(lv_fs_dir_t * rddir_p, const char * path);
/**
* Read the next filename form a directory.
* The name of the directories will begin with '/'
* @param rddir_p pointer to an initialized 'fs_dir_t' variable
* @param fn pointer to a buffer to store the filename
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
lv_fs_res_t lv_fs_dir_read(lv_fs_dir_t * rddir_p, char * fn);
/**
* Close the directory reading
* @param rddir_p pointer to an initialized 'fs_dir_t' variable
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
lv_fs_res_t lv_fs_dir_close(lv_fs_dir_t * rddir_p);
/**
* Fill a buffer with the letters of existing drivers
* @param buf buffer to store the letters ('\0' added after the last letter)
* @return the buffer
*/
char * lv_fs_get_letters(char * buf);
/**
* Return with the extension of the filename
* @param fn string with a filename
* @return pointer to the beginning extension or empty string if no extension
*/
const char * lv_fs_get_ext(const char * fn);
/**
* Step up one level
* @param path pointer to a file name
* @return the truncated file name
*/
char * lv_fs_up(char * path);
/**
* Get the last element of a path (e.g. U:/folder/file -> file)
* @param path pointer to a file name
* @return pointer to the beginning of the last element in the path
*/
const char * lv_fs_get_last(const char * path);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_FS_H*/

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/**
* @file lv_gc.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_gc.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
#if(!defined(LV_ENABLE_GC)) || LV_ENABLE_GC == 0
LV_ROOTS
#endif /*LV_ENABLE_GC*/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void _lv_gc_clear_roots(void)
{
#define LV_CLEAR_ROOT(root_type, root_name) lv_memset_00(&LV_GC_ROOT(root_name), sizeof(LV_GC_ROOT(root_name)));
LV_ITERATE_ROOTS(LV_CLEAR_ROOT)
}
/**********************
* STATIC FUNCTIONS
**********************/

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/**
* @file lv_gc.h
*
*/
#ifndef LV_GC_H
#define LV_GC_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include <stdint.h>
#include "lv_mem.h"
#include "lv_ll.h"
#include "lv_timer.h"
#include "lv_types.h"
#include "../draw/lv_img_cache.h"
#include "../draw/lv_draw_mask.h"
#include "../core/lv_obj_pos.h"
/*********************
* DEFINES
*********************/
#if LV_IMG_CACHE_DEF_SIZE
# define LV_IMG_CACHE_DEF 1
#else
# define LV_IMG_CACHE_DEF 0
#endif
#define LV_DISPATCH(f, t, n) f(t, n)
#define LV_DISPATCH_COND(f, t, n, m, v) LV_CONCAT3(LV_DISPATCH, m, v)(f, t, n)
#define LV_DISPATCH00(f, t, n) LV_DISPATCH(f, t, n)
#define LV_DISPATCH01(f, t, n)
#define LV_DISPATCH10(f, t, n)
#define LV_DISPATCH11(f, t, n) LV_DISPATCH(f, t, n)
#define LV_ITERATE_ROOTS(f) \
LV_DISPATCH(f, lv_ll_t, _lv_timer_ll) /*Linked list to store the lv_timers*/ \
LV_DISPATCH(f, lv_ll_t, _lv_disp_ll) /*Linked list of display device*/ \
LV_DISPATCH(f, lv_ll_t, _lv_indev_ll) /*Linked list of input device*/ \
LV_DISPATCH(f, lv_ll_t, _lv_fsdrv_ll) \
LV_DISPATCH(f, lv_ll_t, _lv_anim_ll) \
LV_DISPATCH(f, lv_ll_t, _lv_group_ll) \
LV_DISPATCH(f, lv_ll_t, _lv_img_decoder_ll) \
LV_DISPATCH(f, lv_ll_t, _lv_obj_style_trans_ll) \
LV_DISPATCH(f, lv_layout_dsc_t *, _lv_layout_list) \
LV_DISPATCH_COND(f, _lv_img_cache_entry_t*, _lv_img_cache_array, LV_IMG_CACHE_DEF, 1) \
LV_DISPATCH_COND(f, _lv_img_cache_entry_t, _lv_img_cache_single, LV_IMG_CACHE_DEF, 0) \
LV_DISPATCH(f, lv_timer_t*, _lv_timer_act) \
LV_DISPATCH(f, lv_mem_buf_arr_t , lv_mem_buf) \
LV_DISPATCH_COND(f, _lv_draw_mask_radius_circle_dsc_arr_t , _lv_circle_cache, LV_DRAW_COMPLEX, 1) \
LV_DISPATCH_COND(f, _lv_draw_mask_saved_arr_t , _lv_draw_mask_list, LV_DRAW_COMPLEX, 1) \
LV_DISPATCH(f, void * , _lv_theme_default_styles) \
LV_DISPATCH(f, void * , _lv_theme_basic_styles) \
LV_DISPATCH_COND(f, uint8_t *, _lv_font_decompr_buf, LV_USE_FONT_COMPRESSED, 1) \
LV_DISPATCH(f, uint8_t * , _lv_grad_cache_mem) \
LV_DISPATCH(f, uint8_t * , _lv_style_custom_prop_flag_lookup_table)
#define LV_DEFINE_ROOT(root_type, root_name) root_type root_name;
#define LV_ROOTS LV_ITERATE_ROOTS(LV_DEFINE_ROOT)
#if LV_ENABLE_GC == 1
#if LV_MEM_CUSTOM != 1
#error "GC requires CUSTOM_MEM"
#endif /*LV_MEM_CUSTOM*/
#include LV_GC_INCLUDE
#else /*LV_ENABLE_GC*/
#define LV_GC_ROOT(x) x
#define LV_EXTERN_ROOT(root_type, root_name) extern root_type root_name;
LV_ITERATE_ROOTS(LV_EXTERN_ROOT)
#endif /*LV_ENABLE_GC*/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
void _lv_gc_clear_roots(void);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_GC_H*/

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/**
* @file lv_ll.c
* Handle linked lists.
* The nodes are dynamically allocated by the 'lv_mem' module,
*/
/*********************
* INCLUDES
*********************/
#include "lv_ll.h"
#include "lv_mem.h"
/*********************
* DEFINES
*********************/
#define LL_NODE_META_SIZE (sizeof(lv_ll_node_t *) + sizeof(lv_ll_node_t *))
#define LL_PREV_P_OFFSET(ll_p) (ll_p->n_size)
#define LL_NEXT_P_OFFSET(ll_p) (ll_p->n_size + sizeof(lv_ll_node_t *))
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void node_set_prev(lv_ll_t * ll_p, lv_ll_node_t * act, lv_ll_node_t * prev);
static void node_set_next(lv_ll_t * ll_p, lv_ll_node_t * act, lv_ll_node_t * next);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize linked list
* @param ll_p pointer to lv_ll_t variable
* @param node_size the size of 1 node in bytes
*/
void _lv_ll_init(lv_ll_t * ll_p, uint32_t node_size)
{
ll_p->head = NULL;
ll_p->tail = NULL;
#ifdef LV_ARCH_64
/*Round the size up to 8*/
node_size = (node_size + 7) & (~0x7);
#else
/*Round the size up to 4*/
node_size = (node_size + 3) & (~0x3);
#endif
ll_p->n_size = node_size;
}
/**
* Add a new head to a linked list
* @param ll_p pointer to linked list
* @return pointer to the new head
*/
void * _lv_ll_ins_head(lv_ll_t * ll_p)
{
lv_ll_node_t * n_new;
n_new = lv_mem_alloc(ll_p->n_size + LL_NODE_META_SIZE);
if(n_new != NULL) {
node_set_prev(ll_p, n_new, NULL); /*No prev. before the new head*/
node_set_next(ll_p, n_new, ll_p->head); /*After new comes the old head*/
if(ll_p->head != NULL) { /*If there is old head then before it goes the new*/
node_set_prev(ll_p, ll_p->head, n_new);
}
ll_p->head = n_new; /*Set the new head in the dsc.*/
if(ll_p->tail == NULL) { /*If there is no tail (1. node) set the tail too*/
ll_p->tail = n_new;
}
}
return n_new;
}
/**
* Insert a new node in front of the n_act node
* @param ll_p pointer to linked list
* @param n_act pointer a node
* @return pointer to the new node
*/
void * _lv_ll_ins_prev(lv_ll_t * ll_p, void * n_act)
{
lv_ll_node_t * n_new;
if(NULL == ll_p || NULL == n_act) return NULL;
if(_lv_ll_get_head(ll_p) == n_act) {
n_new = _lv_ll_ins_head(ll_p);
if(n_new == NULL) return NULL;
}
else {
n_new = lv_mem_alloc(ll_p->n_size + LL_NODE_META_SIZE);
if(n_new == NULL) return NULL;
lv_ll_node_t * n_prev;
n_prev = _lv_ll_get_prev(ll_p, n_act);
node_set_next(ll_p, n_prev, n_new);
node_set_prev(ll_p, n_new, n_prev);
node_set_prev(ll_p, n_act, n_new);
node_set_next(ll_p, n_new, n_act);
}
return n_new;
}
/**
* Add a new tail to a linked list
* @param ll_p pointer to linked list
* @return pointer to the new tail
*/
void * _lv_ll_ins_tail(lv_ll_t * ll_p)
{
lv_ll_node_t * n_new;
n_new = lv_mem_alloc(ll_p->n_size + LL_NODE_META_SIZE);
if(n_new != NULL) {
node_set_next(ll_p, n_new, NULL); /*No next after the new tail*/
node_set_prev(ll_p, n_new, ll_p->tail); /*The prev. before new is the old tail*/
if(ll_p->tail != NULL) { /*If there is old tail then the new comes after it*/
node_set_next(ll_p, ll_p->tail, n_new);
}
ll_p->tail = n_new; /*Set the new tail in the dsc.*/
if(ll_p->head == NULL) { /*If there is no head (1. node) set the head too*/
ll_p->head = n_new;
}
}
return n_new;
}
/**
* Remove the node 'node_p' from 'll_p' linked list.
* It does not free the memory of node.
* @param ll_p pointer to the linked list of 'node_p'
* @param node_p pointer to node in 'll_p' linked list
*/
void _lv_ll_remove(lv_ll_t * ll_p, void * node_p)
{
if(ll_p == NULL) return;
if(_lv_ll_get_head(ll_p) == node_p) {
/*The new head will be the node after 'n_act'*/
ll_p->head = _lv_ll_get_next(ll_p, node_p);
if(ll_p->head == NULL) {
ll_p->tail = NULL;
}
else {
node_set_prev(ll_p, ll_p->head, NULL);
}
}
else if(_lv_ll_get_tail(ll_p) == node_p) {
/*The new tail will be the node before 'n_act'*/
ll_p->tail = _lv_ll_get_prev(ll_p, node_p);
if(ll_p->tail == NULL) {
ll_p->head = NULL;
}
else {
node_set_next(ll_p, ll_p->tail, NULL);
}
}
else {
lv_ll_node_t * n_prev = _lv_ll_get_prev(ll_p, node_p);
lv_ll_node_t * n_next = _lv_ll_get_next(ll_p, node_p);
node_set_next(ll_p, n_prev, n_next);
node_set_prev(ll_p, n_next, n_prev);
}
}
/**
* Remove and free all elements from a linked list. The list remain valid but become empty.
* @param ll_p pointer to linked list
*/
void _lv_ll_clear(lv_ll_t * ll_p)
{
void * i;
void * i_next;
i = _lv_ll_get_head(ll_p);
i_next = NULL;
while(i != NULL) {
i_next = _lv_ll_get_next(ll_p, i);
_lv_ll_remove(ll_p, i);
lv_mem_free(i);
i = i_next;
}
}
/**
* Move a node to a new linked list
* @param ll_ori_p pointer to the original (old) linked list
* @param ll_new_p pointer to the new linked list
* @param node pointer to a node
* @param head true: be the head in the new list
* false be the tail in the new list
*/
void _lv_ll_chg_list(lv_ll_t * ll_ori_p, lv_ll_t * ll_new_p, void * node, bool head)
{
_lv_ll_remove(ll_ori_p, node);
if(head) {
/*Set node as head*/
node_set_prev(ll_new_p, node, NULL);
node_set_next(ll_new_p, node, ll_new_p->head);
if(ll_new_p->head != NULL) { /*If there is old head then before it goes the new*/
node_set_prev(ll_new_p, ll_new_p->head, node);
}
ll_new_p->head = node; /*Set the new head in the dsc.*/
if(ll_new_p->tail == NULL) { /*If there is no tail (first node) set the tail too*/
ll_new_p->tail = node;
}
}
else {
/*Set node as tail*/
node_set_prev(ll_new_p, node, ll_new_p->tail);
node_set_next(ll_new_p, node, NULL);
if(ll_new_p->tail != NULL) { /*If there is old tail then after it goes the new*/
node_set_next(ll_new_p, ll_new_p->tail, node);
}
ll_new_p->tail = node; /*Set the new tail in the dsc.*/
if(ll_new_p->head == NULL) { /*If there is no head (first node) set the head too*/
ll_new_p->head = node;
}
}
}
/**
* Return with head node of the linked list
* @param ll_p pointer to linked list
* @return pointer to the head of 'll_p'
*/
void * _lv_ll_get_head(const lv_ll_t * ll_p)
{
if(ll_p == NULL) return NULL;
return ll_p->head;
}
/**
* Return with tail node of the linked list
* @param ll_p pointer to linked list
* @return pointer to the tail of 'll_p'
*/
void * _lv_ll_get_tail(const lv_ll_t * ll_p)
{
if(ll_p == NULL) return NULL;
return ll_p->tail;
}
/**
* Return with the pointer of the next node after 'n_act'
* @param ll_p pointer to linked list
* @param n_act pointer a node
* @return pointer to the next node
*/
void * _lv_ll_get_next(const lv_ll_t * ll_p, const void * n_act)
{
/*Pointer to the next node is stored in the end of this node.
*Go there and return the address found there*/
const lv_ll_node_t * n_act_d = n_act;
n_act_d += LL_NEXT_P_OFFSET(ll_p);
return *((lv_ll_node_t **)n_act_d);
}
/**
* Return with the pointer of the previous node before 'n_act'
* @param ll_p pointer to linked list
* @param n_act pointer a node
* @return pointer to the previous node
*/
void * _lv_ll_get_prev(const lv_ll_t * ll_p, const void * n_act)
{
/*Pointer to the prev. node is stored in the end of this node.
*Go there and return the address found there*/
const lv_ll_node_t * n_act_d = n_act;
n_act_d += LL_PREV_P_OFFSET(ll_p);
return *((lv_ll_node_t **)n_act_d);
}
/**
* Return the length of the linked list.
* @param ll_p pointer to linked list
* @return length of the linked list
*/
uint32_t _lv_ll_get_len(const lv_ll_t * ll_p)
{
uint32_t len = 0;
void * node;
for(node = _lv_ll_get_head(ll_p); node != NULL; node = _lv_ll_get_next(ll_p, node)) {
len++;
}
return len;
}
/**
* Move a node before an other node in the same linked list
* @param ll_p pointer to a linked list
* @param n_act pointer to node to move
* @param n_after pointer to a node which should be after `n_act`
*/
void _lv_ll_move_before(lv_ll_t * ll_p, void * n_act, void * n_after)
{
if(n_act == n_after) return; /*Can't move before itself*/
void * n_before;
if(n_after != NULL)
n_before = _lv_ll_get_prev(ll_p, n_after);
else
n_before = _lv_ll_get_tail(ll_p); /*if `n_after` is NULL `n_act` should be the new tail*/
if(n_act == n_before) return; /*Already before `n_after`*/
/*It's much easier to remove from the list and add again*/
_lv_ll_remove(ll_p, n_act);
/*Add again by setting the prev. and next nodes*/
node_set_next(ll_p, n_before, n_act);
node_set_prev(ll_p, n_act, n_before);
node_set_prev(ll_p, n_after, n_act);
node_set_next(ll_p, n_act, n_after);
/*If `n_act` was moved before NULL then it become the new tail*/
if(n_after == NULL) ll_p->tail = n_act;
/*If `n_act` was moved before `NULL` then it's the new head*/
if(n_before == NULL) ll_p->head = n_act;
}
/**
* Check if a linked list is empty
* @param ll_p pointer to a linked list
* @return true: the linked list is empty; false: not empty
*/
bool _lv_ll_is_empty(lv_ll_t * ll_p)
{
if(ll_p == NULL) return true;
if(ll_p->head == NULL && ll_p->tail == NULL) return true;
return false;
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Set the previous node pointer of a node
* @param ll_p pointer to linked list
* @param act pointer to a node which prev. node pointer should be set
* @param prev pointer to a node which should be the previous node before 'act'
*/
static void node_set_prev(lv_ll_t * ll_p, lv_ll_node_t * act, lv_ll_node_t * prev)
{
if(act == NULL) return; /*Can't set the prev node of `NULL`*/
uint8_t * act8 = (uint8_t *)act;
act8 += LL_PREV_P_OFFSET(ll_p);
lv_ll_node_t ** act_node_p = (lv_ll_node_t **) act8;
lv_ll_node_t ** prev_node_p = (lv_ll_node_t **) &prev;
*act_node_p = *prev_node_p;
}
/**
* Set the 'next node pointer' of a node
* @param ll_p pointer to linked list
* @param act pointer to a node which next node pointer should be set
* @param next pointer to a node which should be the next node before 'act'
*/
static void node_set_next(lv_ll_t * ll_p, lv_ll_node_t * act, lv_ll_node_t * next)
{
if(act == NULL) return; /*Can't set the next node of `NULL`*/
uint8_t * act8 = (uint8_t *)act;
act8 += LL_NEXT_P_OFFSET(ll_p);
lv_ll_node_t ** act_node_p = (lv_ll_node_t **) act8;
lv_ll_node_t ** next_node_p = (lv_ll_node_t **) &next;
*act_node_p = *next_node_p;
}

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/**
* @file lv_ll.h
* Handle linked lists. The nodes are dynamically allocated by the 'lv_mem' module.
*/
#ifndef LV_LL_H
#define LV_LL_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/** Dummy type to make handling easier*/
typedef uint8_t lv_ll_node_t;
/** Description of a linked list*/
typedef struct {
uint32_t n_size;
lv_ll_node_t * head;
lv_ll_node_t * tail;
} lv_ll_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Initialize linked list
* @param ll_p pointer to lv_ll_t variable
* @param node_size the size of 1 node in bytes
*/
void _lv_ll_init(lv_ll_t * ll_p, uint32_t node_size);
/**
* Add a new head to a linked list
* @param ll_p pointer to linked list
* @return pointer to the new head
*/
void * _lv_ll_ins_head(lv_ll_t * ll_p);
/**
* Insert a new node in front of the n_act node
* @param ll_p pointer to linked list
* @param n_act pointer a node
* @return pointer to the new node
*/
void * _lv_ll_ins_prev(lv_ll_t * ll_p, void * n_act);
/**
* Add a new tail to a linked list
* @param ll_p pointer to linked list
* @return pointer to the new tail
*/
void * _lv_ll_ins_tail(lv_ll_t * ll_p);
/**
* Remove the node 'node_p' from 'll_p' linked list.
* It does not free the memory of node.
* @param ll_p pointer to the linked list of 'node_p'
* @param node_p pointer to node in 'll_p' linked list
*/
void _lv_ll_remove(lv_ll_t * ll_p, void * node_p);
/**
* Remove and free all elements from a linked list. The list remain valid but become empty.
* @param ll_p pointer to linked list
*/
void _lv_ll_clear(lv_ll_t * ll_p);
/**
* Move a node to a new linked list
* @param ll_ori_p pointer to the original (old) linked list
* @param ll_new_p pointer to the new linked list
* @param node pointer to a node
* @param head true: be the head in the new list
* false be the tail in the new list
*/
void _lv_ll_chg_list(lv_ll_t * ll_ori_p, lv_ll_t * ll_new_p, void * node, bool head);
/**
* Return with head node of the linked list
* @param ll_p pointer to linked list
* @return pointer to the head of 'll_p'
*/
void * _lv_ll_get_head(const lv_ll_t * ll_p);
/**
* Return with tail node of the linked list
* @param ll_p pointer to linked list
* @return pointer to the tail of 'll_p'
*/
void * _lv_ll_get_tail(const lv_ll_t * ll_p);
/**
* Return with the pointer of the next node after 'n_act'
* @param ll_p pointer to linked list
* @param n_act pointer a node
* @return pointer to the next node
*/
void * _lv_ll_get_next(const lv_ll_t * ll_p, const void * n_act);
/**
* Return with the pointer of the previous node after 'n_act'
* @param ll_p pointer to linked list
* @param n_act pointer a node
* @return pointer to the previous node
*/
void * _lv_ll_get_prev(const lv_ll_t * ll_p, const void * n_act);
/**
* Return the length of the linked list.
* @param ll_p pointer to linked list
* @return length of the linked list
*/
uint32_t _lv_ll_get_len(const lv_ll_t * ll_p);
/**
* TODO
* @param ll_p
* @param n1_p
* @param n2_p
void lv_ll_swap(lv_ll_t * ll_p, void * n1_p, void * n2_p);
*/
/**
* Move a node before an other node in the same linked list
* @param ll_p pointer to a linked list
* @param n_act pointer to node to move
* @param n_after pointer to a node which should be after `n_act`
*/
void _lv_ll_move_before(lv_ll_t * ll_p, void * n_act, void * n_after);
/**
* Check if a linked list is empty
* @param ll_p pointer to a linked list
* @return true: the linked list is empty; false: not empty
*/
bool _lv_ll_is_empty(lv_ll_t * ll_p);
/**********************
* MACROS
**********************/
#define _LV_LL_READ(list, i) for(i = _lv_ll_get_head(list); i != NULL; i = _lv_ll_get_next(list, i))
#define _LV_LL_READ_BACK(list, i) for(i = _lv_ll_get_tail(list); i != NULL; i = _lv_ll_get_prev(list, i))
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif

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/**
* @file lv_log.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_log.h"
#if LV_USE_LOG
#include <stdarg.h>
#include <string.h>
#include "lv_printf.h"
#include "../hal/lv_hal_tick.h"
#if LV_LOG_PRINTF
#include <stdio.h>
#endif
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
static lv_log_print_g_cb_t custom_print_cb;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Register custom print/write function to call when a log is added.
* It can format its "File path", "Line number" and "Description" as required
* and send the formatted log message to a console or serial port.
* @param print_cb a function pointer to print a log
*/
void lv_log_register_print_cb(lv_log_print_g_cb_t print_cb)
{
custom_print_cb = print_cb;
}
/**
* Add a log
* @param level the level of log. (From `lv_log_level_t` enum)
* @param file name of the file when the log added
* @param line line number in the source code where the log added
* @param func name of the function when the log added
* @param format printf-like format string
* @param ... parameters for `format`
*/
void _lv_log_add(lv_log_level_t level, const char * file, int line, const char * func, const char * format, ...)
{
if(level >= _LV_LOG_LEVEL_NUM) return; /*Invalid level*/
static uint32_t last_log_time = 0;
if(level >= LV_LOG_LEVEL) {
va_list args;
va_start(args, format);
/*Use only the file name not the path*/
size_t p;
for(p = strlen(file); p > 0; p--) {
if(file[p] == '/' || file[p] == '\\') {
p++; /*Skip the slash*/
break;
}
}
uint32_t t = lv_tick_get();
static const char * lvl_prefix[] = {"Trace", "Info", "Warn", "Error", "User"};
#if LV_LOG_PRINTF
printf("[%s]\t(%" LV_PRId32 ".%03" LV_PRId32 ", +%" LV_PRId32 ")\t %s: ",
lvl_prefix[level], t / 1000, t % 1000, t - last_log_time, func);
vprintf(format, args);
printf(" \t(in %s line #%d)\n", &file[p], line);
#else
if(custom_print_cb) {
char buf[512];
#if LV_SPRINTF_CUSTOM
char msg[256];
lv_vsnprintf(msg, sizeof(msg), format, args);
lv_snprintf(buf, sizeof(buf), "[%s]\t(%" LV_PRId32 ".%03" LV_PRId32 ", +%" LV_PRId32 ")\t %s: %s \t(in %s line #%d)\n",
lvl_prefix[level], t / 1000, t % 1000, t - last_log_time, func, msg, &file[p], line);
#else
lv_vaformat_t vaf = {format, &args};
lv_snprintf(buf, sizeof(buf), "[%s]\t(%" LV_PRId32 ".%03" LV_PRId32 ", +%" LV_PRId32 ")\t %s: %pV \t(in %s line #%d)\n",
lvl_prefix[level], t / 1000, t % 1000, t - last_log_time, func, (void *)&vaf, &file[p], line);
#endif
custom_print_cb(buf);
}
#endif
last_log_time = t;
va_end(args);
}
}
void lv_log(const char * format, ...)
{
if(LV_LOG_LEVEL >= LV_LOG_LEVEL_NONE) return; /* disable log */
va_list args;
va_start(args, format);
#if LV_LOG_PRINTF
vprintf(format, args);
#else
if(custom_print_cb) {
char buf[512];
#if LV_SPRINTF_CUSTOM
lv_vsnprintf(buf, sizeof(buf), format, args);
#else
lv_vaformat_t vaf = {format, &args};
lv_snprintf(buf, sizeof(buf), "%pV", (void *)&vaf);
#endif
custom_print_cb(buf);
}
#endif
va_end(args);
}
/**********************
* STATIC FUNCTIONS
**********************/
#endif /*LV_USE_LOG*/

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/**
* @file lv_log.h
*
*/
#ifndef LV_LOG_H
#define LV_LOG_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include <stdint.h>
#include "lv_types.h"
/*********************
* DEFINES
*********************/
/*Possible log level. For compatibility declare it independently from `LV_USE_LOG`*/
#define LV_LOG_LEVEL_TRACE 0 /**< A lot of logs to give detailed information*/
#define LV_LOG_LEVEL_INFO 1 /**< Log important events*/
#define LV_LOG_LEVEL_WARN 2 /**< Log if something unwanted happened but didn't caused problem*/
#define LV_LOG_LEVEL_ERROR 3 /**< Only critical issue, when the system may fail*/
#define LV_LOG_LEVEL_USER 4 /**< Custom logs from the user*/
#define LV_LOG_LEVEL_NONE 5 /**< Do not log anything*/
#define _LV_LOG_LEVEL_NUM 6 /**< Number of log levels*/
LV_EXPORT_CONST_INT(LV_LOG_LEVEL_TRACE);
LV_EXPORT_CONST_INT(LV_LOG_LEVEL_INFO);
LV_EXPORT_CONST_INT(LV_LOG_LEVEL_WARN);
LV_EXPORT_CONST_INT(LV_LOG_LEVEL_ERROR);
LV_EXPORT_CONST_INT(LV_LOG_LEVEL_USER);
LV_EXPORT_CONST_INT(LV_LOG_LEVEL_NONE);
typedef int8_t lv_log_level_t;
#if LV_USE_LOG
/**********************
* TYPEDEFS
**********************/
/**
* Log print function. Receives a string buffer to print".
*/
typedef void (*lv_log_print_g_cb_t)(const char * buf);
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Register custom print/write function to call when a log is added.
* It can format its "File path", "Line number" and "Description" as required
* and send the formatted log message to a console or serial port.
* @param print_cb a function pointer to print a log
*/
void lv_log_register_print_cb(lv_log_print_g_cb_t print_cb);
/**
* Print a log message via `printf` if enabled with `LV_LOG_PRINTF` in `lv_conf.h`
* and/or a print callback if registered with `lv_log_register_print_cb`
* @param format printf-like format string
* @param ... parameters for `format`
*/
void lv_log(const char * format, ...) LV_FORMAT_ATTRIBUTE(1, 2);
/**
* Add a log
* @param level the level of log. (From `lv_log_level_t` enum)
* @param file name of the file when the log added
* @param line line number in the source code where the log added
* @param func name of the function when the log added
* @param format printf-like format string
* @param ... parameters for `format`
*/
void _lv_log_add(lv_log_level_t level, const char * file, int line,
const char * func, const char * format, ...) LV_FORMAT_ATTRIBUTE(5, 6);
/**********************
* MACROS
**********************/
#ifndef LV_LOG_TRACE
# if LV_LOG_LEVEL <= LV_LOG_LEVEL_TRACE
# define LV_LOG_TRACE(...) _lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, __func__, __VA_ARGS__)
# else
# define LV_LOG_TRACE(...) do {}while(0)
# endif
#endif
#ifndef LV_LOG_INFO
# if LV_LOG_LEVEL <= LV_LOG_LEVEL_INFO
# define LV_LOG_INFO(...) _lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, __func__, __VA_ARGS__)
# else
# define LV_LOG_INFO(...) do {}while(0)
# endif
#endif
#ifndef LV_LOG_WARN
# if LV_LOG_LEVEL <= LV_LOG_LEVEL_WARN
# define LV_LOG_WARN(...) _lv_log_add(LV_LOG_LEVEL_WARN, __FILE__, __LINE__, __func__, __VA_ARGS__)
# else
# define LV_LOG_WARN(...) do {}while(0)
# endif
#endif
#ifndef LV_LOG_ERROR
# if LV_LOG_LEVEL <= LV_LOG_LEVEL_ERROR
# define LV_LOG_ERROR(...) _lv_log_add(LV_LOG_LEVEL_ERROR, __FILE__, __LINE__, __func__, __VA_ARGS__)
# else
# define LV_LOG_ERROR(...) do {}while(0)
# endif
#endif
#ifndef LV_LOG_USER
# if LV_LOG_LEVEL <= LV_LOG_LEVEL_USER
# define LV_LOG_USER(...) _lv_log_add(LV_LOG_LEVEL_USER, __FILE__, __LINE__, __func__, __VA_ARGS__)
# else
# define LV_LOG_USER(...) do {}while(0)
# endif
#endif
#ifndef LV_LOG
# if LV_LOG_LEVEL < LV_LOG_LEVEL_NONE
# define LV_LOG(...) lv_log(__VA_ARGS__)
# else
# define LV_LOG(...) do {} while(0)
# endif
#endif
#else /*LV_USE_LOG*/
/*Do nothing if `LV_USE_LOG 0`*/
#define _lv_log_add(level, file, line, ...)
#define LV_LOG_TRACE(...) do {}while(0)
#define LV_LOG_INFO(...) do {}while(0)
#define LV_LOG_WARN(...) do {}while(0)
#define LV_LOG_ERROR(...) do {}while(0)
#define LV_LOG_USER(...) do {}while(0)
#define LV_LOG(...) do {}while(0)
#endif /*LV_USE_LOG*/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_LOG_H*/

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/**
* @file lv_lru.c
*
* @see https://github.com/willcannings/C-LRU-Cache
*/
/*********************
* INCLUDES
*********************/
#include "lv_lru.h"
#include "lv_math.h"
#include "lv_mem.h"
#include "lv_assert.h"
#include "lv_log.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
struct _lv_lru_item_t {
void * value;
void * key;
size_t value_length;
size_t key_length;
uint64_t access_count;
struct _lv_lru_item_t * next;
};
/**********************
* STATIC PROTOTYPES
**********************/
/**
* MurmurHash2
* @author Austin Appleby
* @see http://sites.google.com/site/murmurhash/
*/
static uint32_t lv_lru_hash(lv_lru_t * cache, const void * key, uint32_t key_length);
/** compare a key against an existing item's key */
static int lv_lru_cmp_keys(lv_lru_item_t * item, const void * key, uint32_t key_length);
/** remove an item and push it to the free items queue */
static void lv_lru_remove_item(lv_lru_t * cache, lv_lru_item_t * prev, lv_lru_item_t * item, uint32_t hash_index);
/** pop an existing item off the free queue, or create a new one */
static lv_lru_item_t * lv_lru_pop_or_create_item(lv_lru_t * cache);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/* error helpers */
#define error_for(conditions, error) if(conditions) {return error;}
#define test_for_missing_cache() error_for(!cache, LV_LRU_MISSING_CACHE)
#define test_for_missing_key() error_for(!key, LV_LRU_MISSING_KEY)
#define test_for_missing_value() error_for(!value || value_length == 0, LV_LRU_MISSING_VALUE)
#define test_for_value_too_large() error_for(value_length > cache->total_memory, LV_LRU_VALUE_TOO_LARGE)
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_lru_t * lv_lru_create(size_t cache_size, size_t average_length, lv_lru_free_t * value_free,
lv_lru_free_t * key_free)
{
// create the cache
lv_lru_t * cache = (lv_lru_t *) lv_mem_alloc(sizeof(lv_lru_t));
lv_memset_00(cache, sizeof(lv_lru_t));
if(!cache) {
LV_LOG_WARN("LRU Cache unable to create cache object");
return NULL;
}
cache->hash_table_size = cache_size / average_length;
cache->average_item_length = average_length;
cache->free_memory = cache_size;
cache->total_memory = cache_size;
cache->seed = lv_rand(1, UINT32_MAX);
cache->value_free = value_free ? value_free : lv_mem_free;
cache->key_free = key_free ? key_free : lv_mem_free;
// size the hash table to a guestimate of the number of slots required (assuming a perfect hash)
cache->items = (lv_lru_item_t **) lv_mem_alloc(sizeof(lv_lru_item_t *) * cache->hash_table_size);
lv_memset_00(cache->items, sizeof(lv_lru_item_t *) * cache->hash_table_size);
if(!cache->items) {
LV_LOG_WARN("LRU Cache unable to create cache hash table");
lv_mem_free(cache);
return NULL;
}
return cache;
}
void lv_lru_del(lv_lru_t * cache)
{
LV_ASSERT_NULL(cache);
// free each of the cached items, and the hash table
lv_lru_item_t * item = NULL, *next = NULL;
uint32_t i = 0;
if(cache->items) {
for(; i < cache->hash_table_size; i++) {
item = cache->items[i];
while(item) {
next = (lv_lru_item_t *) item->next;
cache->value_free(item->value);
cache->key_free(item->key);
cache->free_memory += item->value_length;
lv_mem_free(item);
item = next;
}
}
lv_mem_free(cache->items);
}
if(cache->free_items) {
item = cache->free_items;
while(item) {
next = (lv_lru_item_t *) item->next;
lv_mem_free(item);
item = next;
}
}
// free the cache
lv_mem_free(cache);
}
lv_lru_res_t lv_lru_set(lv_lru_t * cache, const void * key, size_t key_length, void * value, size_t value_length)
{
test_for_missing_cache();
test_for_missing_key();
test_for_missing_value();
test_for_value_too_large();
// see if the key already exists
uint32_t hash_index = lv_lru_hash(cache, key, key_length);
int required = 0;
lv_lru_item_t * item = NULL, *prev = NULL;
item = cache->items[hash_index];
while(item && lv_lru_cmp_keys(item, key, key_length)) {
prev = item;
item = (lv_lru_item_t *) item->next;
}
if(item) {
// update the value and value_lengths
required = (int)(value_length - item->value_length);
cache->value_free(item->value);
item->value = value;
item->value_length = value_length;
}
else {
// insert a new item
item = lv_lru_pop_or_create_item(cache);
item->value = value;
item->key = lv_mem_alloc(key_length);
memcpy(item->key, key, key_length);
item->value_length = value_length;
item->key_length = key_length;
required = (int) value_length;
if(prev)
prev->next = item;
else
cache->items[hash_index] = item;
}
item->access_count = ++cache->access_count;
// remove as many items as necessary to free enough space
if(required > 0 && (size_t) required > cache->free_memory) {
while(cache->free_memory < (size_t) required)
lv_lru_remove_lru_item(cache);
}
cache->free_memory -= required;
return LV_LRU_OK;
}
lv_lru_res_t lv_lru_get(lv_lru_t * cache, const void * key, size_t key_size, void ** value)
{
test_for_missing_cache();
test_for_missing_key();
// loop until we find the item, or hit the end of a chain
uint32_t hash_index = lv_lru_hash(cache, key, key_size);
lv_lru_item_t * item = cache->items[hash_index];
while(item && lv_lru_cmp_keys(item, key, key_size))
item = (lv_lru_item_t *) item->next;
if(item) {
*value = item->value;
item->access_count = ++cache->access_count;
}
else {
*value = NULL;
}
return LV_LRU_OK;
}
lv_lru_res_t lv_lru_remove(lv_lru_t * cache, const void * key, size_t key_size)
{
test_for_missing_cache();
test_for_missing_key();
// loop until we find the item, or hit the end of a chain
lv_lru_item_t * item = NULL, *prev = NULL;
uint32_t hash_index = lv_lru_hash(cache, key, key_size);
item = cache->items[hash_index];
while(item && lv_lru_cmp_keys(item, key, key_size)) {
prev = item;
item = (lv_lru_item_t *) item->next;
}
if(item) {
lv_lru_remove_item(cache, prev, item, hash_index);
}
return LV_LRU_OK;
}
void lv_lru_remove_lru_item(lv_lru_t * cache)
{
lv_lru_item_t * min_item = NULL, *min_prev = NULL;
lv_lru_item_t * item = NULL, *prev = NULL;
uint32_t i = 0, min_index = -1;
uint64_t min_access_count = -1;
for(; i < cache->hash_table_size; i++) {
item = cache->items[i];
prev = NULL;
while(item) {
if(item->access_count < min_access_count || (int64_t) min_access_count == -1) {
min_access_count = item->access_count;
min_item = item;
min_prev = prev;
min_index = i;
}
prev = item;
item = item->next;
}
}
if(min_item) {
lv_lru_remove_item(cache, min_prev, min_item, min_index);
}
}
/**********************
* STATIC FUNCTIONS
**********************/
static uint32_t lv_lru_hash(lv_lru_t * cache, const void * key, uint32_t key_length)
{
uint32_t m = 0x5bd1e995;
uint32_t r = 24;
uint32_t h = cache->seed ^ key_length;
char * data = (char *) key;
while(key_length >= 4) {
uint32_t k = *(uint32_t *) data;
k *= m;
k ^= k >> r;
k *= m;
h *= m;
h ^= k;
data += 4;
key_length -= 4;
}
if(key_length >= 3) {
h ^= data[2] << 16;
}
if(key_length >= 2) {
h ^= data[1] << 8;
}
if(key_length >= 1) {
h ^= data[0];
h *= m;
}
h ^= h >> 13;
h *= m;
h ^= h >> 15;
return h % cache->hash_table_size;
}
static int lv_lru_cmp_keys(lv_lru_item_t * item, const void * key, uint32_t key_length)
{
if(key_length != item->key_length) {
return 1;
}
else {
return memcmp(key, item->key, key_length);
}
}
static void lv_lru_remove_item(lv_lru_t * cache, lv_lru_item_t * prev, lv_lru_item_t * item, uint32_t hash_index)
{
if(prev) {
prev->next = item->next;
}
else {
cache->items[hash_index] = (lv_lru_item_t *) item->next;
}
// free memory and update the free memory counter
cache->free_memory += item->value_length;
cache->value_free(item->value);
cache->key_free(item->key);
// push the item to the free items queue
lv_memset_00(item, sizeof(lv_lru_item_t));
item->next = cache->free_items;
cache->free_items = item;
}
static lv_lru_item_t * lv_lru_pop_or_create_item(lv_lru_t * cache)
{
lv_lru_item_t * item = NULL;
if(cache->free_items) {
item = cache->free_items;
cache->free_items = item->next;
lv_memset_00(item, sizeof(lv_lru_item_t));
}
else {
item = (lv_lru_item_t *) lv_mem_alloc(sizeof(lv_lru_item_t));
lv_memset_00(item, sizeof(lv_lru_item_t));
}
return item;
}

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/**
* @file lv_lru.h
*
*/
#ifndef LV_LRU_H
#define LV_LRU_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include "lv_types.h"
#include <stdint.h>
#include <stddef.h>
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
typedef enum {
LV_LRU_OK = 0,
LV_LRU_MISSING_CACHE,
LV_LRU_MISSING_KEY,
LV_LRU_MISSING_VALUE,
LV_LRU_LOCK_ERROR,
LV_LRU_VALUE_TOO_LARGE
} lv_lru_res_t;
typedef void (lv_lru_free_t)(void * v);
typedef struct _lv_lru_item_t lv_lru_item_t;
typedef struct lv_lru_t {
lv_lru_item_t ** items;
uint64_t access_count;
size_t free_memory;
size_t total_memory;
size_t average_item_length;
size_t hash_table_size;
uint32_t seed;
lv_lru_free_t * value_free;
lv_lru_free_t * key_free;
lv_lru_item_t * free_items;
} lv_lru_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
lv_lru_t * lv_lru_create(size_t cache_size, size_t average_length, lv_lru_free_t * value_free,
lv_lru_free_t * key_free);
void lv_lru_del(lv_lru_t * cache);
lv_lru_res_t lv_lru_set(lv_lru_t * cache, const void * key, size_t key_length, void * value, size_t value_length);
lv_lru_res_t lv_lru_get(lv_lru_t * cache, const void * key, size_t key_size, void ** value);
lv_lru_res_t lv_lru_remove(lv_lru_t * cache, const void * key, size_t key_size);
/**
* remove the least recently used item
*
* @todo we can optimise this by finding the n lru items, where n = required_space / average_length
*/
void lv_lru_remove_lru_item(lv_lru_t * cache);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_LRU_H*/

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/**
* @file lv_math.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_math.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
static const int16_t sin0_90_table[] = {
0, 572, 1144, 1715, 2286, 2856, 3425, 3993, 4560, 5126, 5690, 6252, 6813, 7371, 7927, 8481,
9032, 9580, 10126, 10668, 11207, 11743, 12275, 12803, 13328, 13848, 14364, 14876, 15383, 15886, 16383, 16876,
17364, 17846, 18323, 18794, 19260, 19720, 20173, 20621, 21062, 21497, 21925, 22347, 22762, 23170, 23571, 23964,
24351, 24730, 25101, 25465, 25821, 26169, 26509, 26841, 27165, 27481, 27788, 28087, 28377, 28659, 28932, 29196,
29451, 29697, 29934, 30162, 30381, 30591, 30791, 30982, 31163, 31335, 31498, 31650, 31794, 31927, 32051, 32165,
32269, 32364, 32448, 32523, 32587, 32642, 32687, 32722, 32747, 32762, 32767
};
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Return with sinus of an angle
* @param angle
* @return sinus of 'angle'. sin(-90) = -32767, sin(90) = 32767
*/
LV_ATTRIBUTE_FAST_MEM int16_t lv_trigo_sin(int16_t angle)
{
int16_t ret = 0;
angle = angle % 360;
if(angle < 0) angle = 360 + angle;
if(angle < 90) {
ret = sin0_90_table[angle];
}
else if(angle >= 90 && angle < 180) {
angle = 180 - angle;
ret = sin0_90_table[angle];
}
else if(angle >= 180 && angle < 270) {
angle = angle - 180;
ret = -sin0_90_table[angle];
}
else { /*angle >=270*/
angle = 360 - angle;
ret = -sin0_90_table[angle];
}
return ret;
}
/**
* Calculate a value of a Cubic Bezier function.
* @param t time in range of [0..LV_BEZIER_VAL_MAX]
* @param u0 start values in range of [0..LV_BEZIER_VAL_MAX]
* @param u1 control value 1 values in range of [0..LV_BEZIER_VAL_MAX]
* @param u2 control value 2 in range of [0..LV_BEZIER_VAL_MAX]
* @param u3 end values in range of [0..LV_BEZIER_VAL_MAX]
* @return the value calculated from the given parameters in range of [0..LV_BEZIER_VAL_MAX]
*/
uint32_t lv_bezier3(uint32_t t, uint32_t u0, uint32_t u1, uint32_t u2, uint32_t u3)
{
uint32_t t_rem = 1024 - t;
uint32_t t_rem2 = (t_rem * t_rem) >> 10;
uint32_t t_rem3 = (t_rem2 * t_rem) >> 10;
uint32_t t2 = (t * t) >> 10;
uint32_t t3 = (t2 * t) >> 10;
uint32_t v1 = (t_rem3 * u0) >> 10;
uint32_t v2 = (3 * t_rem2 * t * u1) >> 20;
uint32_t v3 = (3 * t_rem * t2 * u2) >> 20;
uint32_t v4 = (t3 * u3) >> 10;
return v1 + v2 + v3 + v4;
}
/**
* Get the square root of a number
* @param x integer which square root should be calculated
* @param q store the result here. q->i: integer part, q->f: fractional part in 1/256 unit
* @param mask optional to skip some iterations if the magnitude of the root is known.
* Set to 0x8000 by default.
* If root < 16: mask = 0x80
* If root < 256: mask = 0x800
* Else: mask = 0x8000
*/
LV_ATTRIBUTE_FAST_MEM void lv_sqrt(uint32_t x, lv_sqrt_res_t * q, uint32_t mask)
{
x = x << 8; /*To get 4 bit precision. (sqrt(256) = 16 = 4 bit)*/
uint32_t root = 0;
uint32_t trial;
// http://ww1.microchip.com/...en/AppNotes/91040a.pdf
do {
trial = root + mask;
if(trial * trial <= x) root = trial;
mask = mask >> 1;
} while(mask);
q->i = root >> 4;
q->f = (root & 0xf) << 4;
}
/**
* Calculate the atan2 of a vector.
* @param x
* @param y
* @return the angle in degree calculated from the given parameters in range of [0..360]
*/
uint16_t lv_atan2(int x, int y)
{
// Fast XY vector to integer degree algorithm - Jan 2011 www.RomanBlack.com
// Converts any XY values including 0 to a degree value that should be
// within +/- 1 degree of the accurate value without needing
// large slow trig functions like ArcTan() or ArcCos().
// NOTE! at least one of the X or Y values must be non-zero!
// This is the full version, for all 4 quadrants and will generate
// the angle in integer degrees from 0-360.
// Any values of X and Y are usable including negative values provided
// they are between -1456 and 1456 so the 16bit multiply does not overflow.
unsigned char negflag;
unsigned char tempdegree;
unsigned char comp;
unsigned int degree; // this will hold the result
unsigned int ux;
unsigned int uy;
// Save the sign flags then remove signs and get XY as unsigned ints
negflag = 0;
if(x < 0) {
negflag += 0x01; // x flag bit
x = (0 - x); // is now +
}
ux = x; // copy to unsigned var before multiply
if(y < 0) {
negflag += 0x02; // y flag bit
y = (0 - y); // is now +
}
uy = y; // copy to unsigned var before multiply
// 1. Calc the scaled "degrees"
if(ux > uy) {
degree = (uy * 45) / ux; // degree result will be 0-45 range
negflag += 0x10; // octant flag bit
}
else {
degree = (ux * 45) / uy; // degree result will be 0-45 range
}
// 2. Compensate for the 4 degree error curve
comp = 0;
tempdegree = degree; // use an unsigned char for speed!
if(tempdegree > 22) { // if top half of range
if(tempdegree <= 44) comp++;
if(tempdegree <= 41) comp++;
if(tempdegree <= 37) comp++;
if(tempdegree <= 32) comp++; // max is 4 degrees compensated
}
else { // else is lower half of range
if(tempdegree >= 2) comp++;
if(tempdegree >= 6) comp++;
if(tempdegree >= 10) comp++;
if(tempdegree >= 15) comp++; // max is 4 degrees compensated
}
degree += comp; // degree is now accurate to +/- 1 degree!
// Invert degree if it was X>Y octant, makes 0-45 into 90-45
if(negflag & 0x10) degree = (90 - degree);
// 3. Degree is now 0-90 range for this quadrant,
// need to invert it for whichever quadrant it was in
if(negflag & 0x02) { // if -Y
if(negflag & 0x01) // if -Y -X
degree = (180 + degree);
else // else is -Y +X
degree = (180 - degree);
}
else { // else is +Y
if(negflag & 0x01) // if +Y -X
degree = (360 - degree);
}
return degree;
}
/**
* Calculate the integer exponents.
* @param base
* @param power
* @return base raised to the power exponent
*/
int64_t lv_pow(int64_t base, int8_t exp)
{
int64_t result = 1;
while(exp) {
if(exp & 1)
result *= base;
exp >>= 1;
base *= base;
}
return result;
}
/**
* Get the mapped of a number given an input and output range
* @param x integer which mapped value should be calculated
* @param min_in min input range
* @param max_in max input range
* @param min_out max output range
* @param max_out max output range
* @return the mapped number
*/
int32_t lv_map(int32_t x, int32_t min_in, int32_t max_in, int32_t min_out, int32_t max_out)
{
if(max_in >= min_in && x >= max_in) return max_out;
if(max_in >= min_in && x <= min_in) return min_out;
if(max_in <= min_in && x <= max_in) return max_out;
if(max_in <= min_in && x >= min_in) return min_out;
/**
* The equation should be:
* ((x - min_in) * delta_out) / delta in) + min_out
* To avoid rounding error reorder the operations:
* (x - min_in) * (delta_out / delta_min) + min_out
*/
int32_t delta_in = max_in - min_in;
int32_t delta_out = max_out - min_out;
return ((x - min_in) * delta_out) / delta_in + min_out;
}
uint32_t lv_rand(uint32_t min, uint32_t max)
{
static uint32_t a = 0x1234ABCD; /*Seed*/
/*Algorithm "xor" from p. 4 of Marsaglia, "Xorshift RNGs"*/
uint32_t x = a;
x ^= x << 13;
x ^= x >> 17;
x ^= x << 5;
a = x;
return (a % (max - min + 1)) + min;
}
/**********************
* STATIC FUNCTIONS
**********************/

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/**
* @file lv_math.h
*
*/
#ifndef LV_MATH_H
#define LV_MATH_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include <stdint.h>
/*********************
* DEFINES
*********************/
#define LV_TRIGO_SIN_MAX 32767
#define LV_TRIGO_SHIFT 15 /**< >> LV_TRIGO_SHIFT to normalize*/
#define LV_BEZIER_VAL_MAX 1024 /**< Max time in Bezier functions (not [0..1] to use integers)*/
#define LV_BEZIER_VAL_SHIFT 10 /**< log2(LV_BEZIER_VAL_MAX): used to normalize up scaled values*/
/**********************
* TYPEDEFS
**********************/
typedef struct {
uint16_t i;
uint16_t f;
} lv_sqrt_res_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
//! @cond Doxygen_Suppress
/**
* Return with sinus of an angle
* @param angle
* @return sinus of 'angle'. sin(-90) = -32767, sin(90) = 32767
*/
LV_ATTRIBUTE_FAST_MEM int16_t lv_trigo_sin(int16_t angle);
static inline LV_ATTRIBUTE_FAST_MEM int16_t lv_trigo_cos(int16_t angle)
{
return lv_trigo_sin(angle + 90);
}
//! @endcond
/**
* Calculate a value of a Cubic Bezier function.
* @param t time in range of [0..LV_BEZIER_VAL_MAX]
* @param u0 start values in range of [0..LV_BEZIER_VAL_MAX]
* @param u1 control value 1 values in range of [0..LV_BEZIER_VAL_MAX]
* @param u2 control value 2 in range of [0..LV_BEZIER_VAL_MAX]
* @param u3 end values in range of [0..LV_BEZIER_VAL_MAX]
* @return the value calculated from the given parameters in range of [0..LV_BEZIER_VAL_MAX]
*/
uint32_t lv_bezier3(uint32_t t, uint32_t u0, uint32_t u1, uint32_t u2, uint32_t u3);
/**
* Calculate the atan2 of a vector.
* @param x
* @param y
* @return the angle in degree calculated from the given parameters in range of [0..360]
*/
uint16_t lv_atan2(int x, int y);
//! @cond Doxygen_Suppress
/**
* Get the square root of a number
* @param x integer which square root should be calculated
* @param q store the result here. q->i: integer part, q->f: fractional part in 1/256 unit
* @param mask optional to skip some iterations if the magnitude of the root is known.
* Set to 0x8000 by default.
* If root < 16: mask = 0x80
* If root < 256: mask = 0x800
* Else: mask = 0x8000
*/
LV_ATTRIBUTE_FAST_MEM void lv_sqrt(uint32_t x, lv_sqrt_res_t * q, uint32_t mask);
//! @endcond
/**
* Calculate the integer exponents.
* @param base
* @param power
* @return base raised to the power exponent
*/
int64_t lv_pow(int64_t base, int8_t exp);
/**
* Get the mapped of a number given an input and output range
* @param x integer which mapped value should be calculated
* @param min_in min input range
* @param max_in max input range
* @param min_out max output range
* @param max_out max output range
* @return the mapped number
*/
int32_t lv_map(int32_t x, int32_t min_in, int32_t max_in, int32_t min_out, int32_t max_out);
/**
* Get a pseudo random number in the given range
* @param min the minimum value
* @param max the maximum value
* @return return the random number. min <= return_value <= max
*/
uint32_t lv_rand(uint32_t min, uint32_t max);
/**********************
* MACROS
**********************/
#define LV_MIN(a, b) ((a) < (b) ? (a) : (b))
#define LV_MIN3(a, b, c) (LV_MIN(LV_MIN(a,b), c))
#define LV_MIN4(a, b, c, d) (LV_MIN(LV_MIN(a,b), LV_MIN(c,d)))
#define LV_MAX(a, b) ((a) > (b) ? (a) : (b))
#define LV_MAX3(a, b, c) (LV_MAX(LV_MAX(a,b), c))
#define LV_MAX4(a, b, c, d) (LV_MAX(LV_MAX(a,b), LV_MAX(c,d)))
#define LV_CLAMP(min, val, max) (LV_MAX(min, (LV_MIN(val, max))))
#define LV_ABS(x) ((x) > 0 ? (x) : (-(x)))
#define LV_UDIV255(x) (((x) * 0x8081U) >> 0x17)
#define LV_IS_SIGNED(t) (((t)(-1)) < ((t)0))
#define LV_UMAX_OF(t) (((0x1ULL << ((sizeof(t) * 8ULL) - 1ULL)) - 1ULL) | (0xFULL << ((sizeof(t) * 8ULL) - 4ULL)))
#define LV_SMAX_OF(t) (((0x1ULL << ((sizeof(t) * 8ULL) - 1ULL)) - 1ULL) | (0x7ULL << ((sizeof(t) * 8ULL) - 4ULL)))
#define LV_MAX_OF(t) ((unsigned long)(LV_IS_SIGNED(t) ? LV_SMAX_OF(t) : LV_UMAX_OF(t)))
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif

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/**
* @file lv_mem.c
* General and portable implementation of malloc and free.
* The dynamic memory monitoring is also supported.
*/
/*********************
* INCLUDES
*********************/
#include "lv_mem.h"
#include "lv_tlsf.h"
#include "lv_gc.h"
#include "lv_assert.h"
#include "lv_log.h"
#if LV_MEM_CUSTOM != 0
#include LV_MEM_CUSTOM_INCLUDE
#endif
#ifdef LV_MEM_POOL_INCLUDE
#include LV_MEM_POOL_INCLUDE
#endif
/*********************
* DEFINES
*********************/
/*memset the allocated memories to 0xaa and freed memories to 0xbb (just for testing purposes)*/
#ifndef LV_MEM_ADD_JUNK
#define LV_MEM_ADD_JUNK 0
#endif
#ifdef LV_ARCH_64
#define MEM_UNIT uint64_t
#define ALIGN_MASK 0x7
#else
#define MEM_UNIT uint32_t
#define ALIGN_MASK 0x3
#endif
#define ZERO_MEM_SENTINEL 0xa1b2c3d4
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
#if LV_MEM_CUSTOM == 0
static void lv_mem_walker(void * ptr, size_t size, int used, void * user);
#endif
/**********************
* STATIC VARIABLES
**********************/
#if LV_MEM_CUSTOM == 0
static lv_tlsf_t tlsf;
static uint32_t cur_used;
static uint32_t max_used;
#endif
static uint32_t zero_mem = ZERO_MEM_SENTINEL; /*Give the address of this variable if 0 byte should be allocated*/
/**********************
* MACROS
**********************/
#if LV_LOG_TRACE_MEM
#define MEM_TRACE(...) LV_LOG_TRACE(__VA_ARGS__)
#else
#define MEM_TRACE(...)
#endif
#define COPY32 *d32 = *s32; d32++; s32++;
#define COPY8 *d8 = *s8; d8++; s8++;
#define SET32(x) *d32 = x; d32++;
#define SET8(x) *d8 = x; d8++;
#define REPEAT8(expr) expr expr expr expr expr expr expr expr
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize the dyn_mem module (work memory and other variables)
*/
void lv_mem_init(void)
{
#if LV_MEM_CUSTOM == 0
#if LV_MEM_ADR == 0
#ifdef LV_MEM_POOL_ALLOC
tlsf = lv_tlsf_create_with_pool((void *)LV_MEM_POOL_ALLOC(LV_MEM_SIZE), LV_MEM_SIZE);
#else
/*Allocate a large array to store the dynamically allocated data*/
static LV_ATTRIBUTE_LARGE_RAM_ARRAY MEM_UNIT work_mem_int[LV_MEM_SIZE / sizeof(MEM_UNIT)];
tlsf = lv_tlsf_create_with_pool((void *)work_mem_int, LV_MEM_SIZE);
#endif
#else
tlsf = lv_tlsf_create_with_pool((void *)LV_MEM_ADR, LV_MEM_SIZE);
#endif
#endif
#if LV_MEM_ADD_JUNK
LV_LOG_WARN("LV_MEM_ADD_JUNK is enabled which makes LVGL much slower");
#endif
}
/**
* Clean up the memory buffer which frees all the allocated memories.
* @note It work only if `LV_MEM_CUSTOM == 0`
*/
void lv_mem_deinit(void)
{
#if LV_MEM_CUSTOM == 0
lv_tlsf_destroy(tlsf);
lv_mem_init();
#endif
}
/**
* Allocate a memory dynamically
* @param size size of the memory to allocate in bytes
* @return pointer to the allocated memory
*/
void * lv_mem_alloc(size_t size)
{
MEM_TRACE("allocating %lu bytes", (unsigned long)size);
if(size == 0) {
MEM_TRACE("using zero_mem");
return &zero_mem;
}
#if LV_MEM_CUSTOM == 0
void * alloc = lv_tlsf_malloc(tlsf, size);
#else
void * alloc = LV_MEM_CUSTOM_ALLOC(size);
#endif
if(alloc == NULL) {
LV_LOG_INFO("couldn't allocate memory (%lu bytes)", (unsigned long)size);
#if LV_LOG_LEVEL <= LV_LOG_LEVEL_INFO
lv_mem_monitor_t mon;
lv_mem_monitor(&mon);
LV_LOG_INFO("used: %6d (%3d %%), frag: %3d %%, biggest free: %6d",
(int)(mon.total_size - mon.free_size), mon.used_pct, mon.frag_pct,
(int)mon.free_biggest_size);
#endif
}
#if LV_MEM_ADD_JUNK
else {
lv_memset(alloc, 0xaa, size);
}
#endif
if(alloc) {
#if LV_MEM_CUSTOM == 0
cur_used += size;
max_used = LV_MAX(cur_used, max_used);
#endif
MEM_TRACE("allocated at %p", alloc);
}
return alloc;
}
/**
* Free an allocated data
* @param data pointer to an allocated memory
*/
void lv_mem_free(void * data)
{
MEM_TRACE("freeing %p", data);
if(data == &zero_mem) return;
if(data == NULL) return;
#if LV_MEM_CUSTOM == 0
# if LV_MEM_ADD_JUNK
lv_memset(data, 0xbb, lv_tlsf_block_size(data));
# endif
size_t size = lv_tlsf_free(tlsf, data);
if(cur_used > size) cur_used -= size;
else cur_used = 0;
#else
LV_MEM_CUSTOM_FREE(data);
#endif
}
/**
* Reallocate a memory with a new size. The old content will be kept.
* @param data pointer to an allocated memory.
* Its content will be copied to the new memory block and freed
* @param new_size the desired new size in byte
* @return pointer to the new memory
*/
void * lv_mem_realloc(void * data_p, size_t new_size)
{
MEM_TRACE("reallocating %p with %lu size", data_p, (unsigned long)new_size);
if(new_size == 0) {
MEM_TRACE("using zero_mem");
lv_mem_free(data_p);
return &zero_mem;
}
if(data_p == &zero_mem) return lv_mem_alloc(new_size);
#if LV_MEM_CUSTOM == 0
void * new_p = lv_tlsf_realloc(tlsf, data_p, new_size);
#else
void * new_p = LV_MEM_CUSTOM_REALLOC(data_p, new_size);
#endif
if(new_p == NULL) {
LV_LOG_ERROR("couldn't allocate memory");
return NULL;
}
MEM_TRACE("allocated at %p", new_p);
return new_p;
}
lv_res_t lv_mem_test(void)
{
if(zero_mem != ZERO_MEM_SENTINEL) {
LV_LOG_WARN("zero_mem is written");
return LV_RES_INV;
}
#if LV_MEM_CUSTOM == 0
if(lv_tlsf_check(tlsf)) {
LV_LOG_WARN("failed");
return LV_RES_INV;
}
if(lv_tlsf_check_pool(lv_tlsf_get_pool(tlsf))) {
LV_LOG_WARN("pool failed");
return LV_RES_INV;
}
#endif
MEM_TRACE("passed");
return LV_RES_OK;
}
/**
* Give information about the work memory of dynamic allocation
* @param mon_p pointer to a lv_mem_monitor_t variable,
* the result of the analysis will be stored here
*/
void lv_mem_monitor(lv_mem_monitor_t * mon_p)
{
/*Init the data*/
lv_memset(mon_p, 0, sizeof(lv_mem_monitor_t));
#if LV_MEM_CUSTOM == 0
MEM_TRACE("begin");
lv_tlsf_walk_pool(lv_tlsf_get_pool(tlsf), lv_mem_walker, mon_p);
mon_p->total_size = LV_MEM_SIZE;
mon_p->used_pct = 100 - (100U * mon_p->free_size) / mon_p->total_size;
if(mon_p->free_size > 0) {
mon_p->frag_pct = mon_p->free_biggest_size * 100U / mon_p->free_size;
mon_p->frag_pct = 100 - mon_p->frag_pct;
}
else {
mon_p->frag_pct = 0; /*no fragmentation if all the RAM is used*/
}
mon_p->max_used = max_used;
MEM_TRACE("finished");
#endif
}
/**
* Get a temporal buffer with the given size.
* @param size the required size
*/
void * lv_mem_buf_get(uint32_t size)
{
if(size == 0) return NULL;
MEM_TRACE("begin, getting %d bytes", size);
/*Try to find a free buffer with suitable size*/
int8_t i_guess = -1;
for(uint8_t i = 0; i < LV_MEM_BUF_MAX_NUM; i++) {
if(LV_GC_ROOT(lv_mem_buf[i]).used == 0 && LV_GC_ROOT(lv_mem_buf[i]).size >= size) {
if(LV_GC_ROOT(lv_mem_buf[i]).size == size) {
LV_GC_ROOT(lv_mem_buf[i]).used = 1;
return LV_GC_ROOT(lv_mem_buf[i]).p;
}
else if(i_guess < 0) {
i_guess = i;
}
/*If size of `i` is closer to `size` prefer it*/
else if(LV_GC_ROOT(lv_mem_buf[i]).size < LV_GC_ROOT(lv_mem_buf[i_guess]).size) {
i_guess = i;
}
}
}
if(i_guess >= 0) {
LV_GC_ROOT(lv_mem_buf[i_guess]).used = 1;
MEM_TRACE("returning already allocated buffer (buffer id: %d, address: %p)", i_guess,
LV_GC_ROOT(lv_mem_buf[i_guess]).p);
return LV_GC_ROOT(lv_mem_buf[i_guess]).p;
}
/*Reallocate a free buffer*/
for(uint8_t i = 0; i < LV_MEM_BUF_MAX_NUM; i++) {
if(LV_GC_ROOT(lv_mem_buf[i]).used == 0) {
/*if this fails you probably need to increase your LV_MEM_SIZE/heap size*/
void * buf = lv_mem_realloc(LV_GC_ROOT(lv_mem_buf[i]).p, size);
LV_ASSERT_MSG(buf != NULL, "Out of memory, can't allocate a new buffer (increase your LV_MEM_SIZE/heap size)");
if(buf == NULL) return NULL;
LV_GC_ROOT(lv_mem_buf[i]).used = 1;
LV_GC_ROOT(lv_mem_buf[i]).size = size;
LV_GC_ROOT(lv_mem_buf[i]).p = buf;
MEM_TRACE("allocated (buffer id: %d, address: %p)", i, LV_GC_ROOT(lv_mem_buf[i]).p);
return LV_GC_ROOT(lv_mem_buf[i]).p;
}
}
LV_LOG_ERROR("no more buffers. (increase LV_MEM_BUF_MAX_NUM)");
LV_ASSERT_MSG(false, "No more buffers. Increase LV_MEM_BUF_MAX_NUM.");
return NULL;
}
/**
* Release a memory buffer
* @param p buffer to release
*/
void lv_mem_buf_release(void * p)
{
MEM_TRACE("begin (address: %p)", p);
for(uint8_t i = 0; i < LV_MEM_BUF_MAX_NUM; i++) {
if(LV_GC_ROOT(lv_mem_buf[i]).p == p) {
LV_GC_ROOT(lv_mem_buf[i]).used = 0;
return;
}
}
LV_LOG_ERROR("p is not a known buffer");
}
/**
* Free all memory buffers
*/
void lv_mem_buf_free_all(void)
{
for(uint8_t i = 0; i < LV_MEM_BUF_MAX_NUM; i++) {
if(LV_GC_ROOT(lv_mem_buf[i]).p) {
lv_mem_free(LV_GC_ROOT(lv_mem_buf[i]).p);
LV_GC_ROOT(lv_mem_buf[i]).p = NULL;
LV_GC_ROOT(lv_mem_buf[i]).used = 0;
LV_GC_ROOT(lv_mem_buf[i]).size = 0;
}
}
}
#if LV_MEMCPY_MEMSET_STD == 0
/**
* Same as `memcpy` but optimized for 4 byte operation.
* @param dst pointer to the destination buffer
* @param src pointer to the source buffer
* @param len number of byte to copy
*/
LV_ATTRIBUTE_FAST_MEM void * lv_memcpy(void * dst, const void * src, size_t len)
{
uint8_t * d8 = dst;
const uint8_t * s8 = src;
lv_uintptr_t d_align = (lv_uintptr_t)d8 & ALIGN_MASK;
lv_uintptr_t s_align = (lv_uintptr_t)s8 & ALIGN_MASK;
/*Byte copy for unaligned memories*/
if(s_align != d_align) {
while(len > 32) {
REPEAT8(COPY8);
REPEAT8(COPY8);
REPEAT8(COPY8);
REPEAT8(COPY8);
len -= 32;
}
while(len) {
COPY8
len--;
}
return dst;
}
/*Make the memories aligned*/
if(d_align) {
d_align = ALIGN_MASK + 1 - d_align;
while(d_align && len) {
COPY8;
d_align--;
len--;
}
}
uint32_t * d32 = (uint32_t *)d8;
const uint32_t * s32 = (uint32_t *)s8;
while(len > 32) {
REPEAT8(COPY32)
len -= 32;
}
while(len > 4) {
COPY32;
len -= 4;
}
d8 = (uint8_t *)d32;
s8 = (const uint8_t *)s32;
while(len) {
COPY8
len--;
}
return dst;
}
/**
* Same as `memset` but optimized for 4 byte operation.
* @param dst pointer to the destination buffer
* @param v value to set [0..255]
* @param len number of byte to set
*/
LV_ATTRIBUTE_FAST_MEM void lv_memset(void * dst, uint8_t v, size_t len)
{
uint8_t * d8 = (uint8_t *)dst;
uintptr_t d_align = (lv_uintptr_t) d8 & ALIGN_MASK;
/*Make the address aligned*/
if(d_align) {
d_align = ALIGN_MASK + 1 - d_align;
while(d_align && len) {
SET8(v);
len--;
d_align--;
}
}
uint32_t v32 = (uint32_t)v + ((uint32_t)v << 8) + ((uint32_t)v << 16) + ((uint32_t)v << 24);
uint32_t * d32 = (uint32_t *)d8;
while(len > 32) {
REPEAT8(SET32(v32));
len -= 32;
}
while(len > 4) {
SET32(v32);
len -= 4;
}
d8 = (uint8_t *)d32;
while(len) {
SET8(v);
len--;
}
}
/**
* Same as `memset(dst, 0x00, len)` but optimized for 4 byte operation.
* @param dst pointer to the destination buffer
* @param len number of byte to set
*/
LV_ATTRIBUTE_FAST_MEM void lv_memset_00(void * dst, size_t len)
{
uint8_t * d8 = (uint8_t *)dst;
uintptr_t d_align = (lv_uintptr_t) d8 & ALIGN_MASK;
/*Make the address aligned*/
if(d_align) {
d_align = ALIGN_MASK + 1 - d_align;
while(d_align && len) {
SET8(0);
len--;
d_align--;
}
}
uint32_t * d32 = (uint32_t *)d8;
while(len > 32) {
REPEAT8(SET32(0));
len -= 32;
}
while(len > 4) {
SET32(0);
len -= 4;
}
d8 = (uint8_t *)d32;
while(len) {
SET8(0);
len--;
}
}
/**
* Same as `memset(dst, 0xFF, len)` but optimized for 4 byte operation.
* @param dst pointer to the destination buffer
* @param len number of byte to set
*/
LV_ATTRIBUTE_FAST_MEM void lv_memset_ff(void * dst, size_t len)
{
uint8_t * d8 = (uint8_t *)dst;
uintptr_t d_align = (lv_uintptr_t) d8 & ALIGN_MASK;
/*Make the address aligned*/
if(d_align) {
d_align = ALIGN_MASK + 1 - d_align;
while(d_align && len) {
SET8(0xFF);
len--;
d_align--;
}
}
uint32_t * d32 = (uint32_t *)d8;
while(len > 32) {
REPEAT8(SET32(0xFFFFFFFF));
len -= 32;
}
while(len > 4) {
SET32(0xFFFFFFFF);
len -= 4;
}
d8 = (uint8_t *)d32;
while(len) {
SET8(0xFF);
len--;
}
}
#endif /*LV_MEMCPY_MEMSET_STD*/
/**********************
* STATIC FUNCTIONS
**********************/
#if LV_MEM_CUSTOM == 0
static void lv_mem_walker(void * ptr, size_t size, int used, void * user)
{
LV_UNUSED(ptr);
lv_mem_monitor_t * mon_p = user;
if(used) {
mon_p->used_cnt++;
}
else {
mon_p->free_cnt++;
mon_p->free_size += size;
if(size > mon_p->free_biggest_size)
mon_p->free_biggest_size = size;
}
}
#endif

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/**
* @file lv_mem.h
*
*/
#ifndef LV_MEM_H
#define LV_MEM_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include "lv_types.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**
* Heap information structure.
*/
typedef struct {
uint32_t total_size; /**< Total heap size*/
uint32_t free_cnt;
uint32_t free_size; /**< Size of available memory*/
uint32_t free_biggest_size;
uint32_t used_cnt;
uint32_t max_used; /**< Max size of Heap memory used*/
uint8_t used_pct; /**< Percentage used*/
uint8_t frag_pct; /**< Amount of fragmentation*/
} lv_mem_monitor_t;
typedef struct {
void * p;
uint16_t size;
uint8_t used : 1;
} lv_mem_buf_t;
typedef lv_mem_buf_t lv_mem_buf_arr_t[LV_MEM_BUF_MAX_NUM];
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Initialize the dyn_mem module (work memory and other variables)
*/
void lv_mem_init(void);
/**
* Clean up the memory buffer which frees all the allocated memories.
* @note It work only if `LV_MEM_CUSTOM == 0`
*/
void lv_mem_deinit(void);
/**
* Allocate a memory dynamically
* @param size size of the memory to allocate in bytes
* @return pointer to the allocated memory
*/
void * lv_mem_alloc(size_t size);
/**
* Free an allocated data
* @param data pointer to an allocated memory
*/
void lv_mem_free(void * data);
/**
* Reallocate a memory with a new size. The old content will be kept.
* @param data pointer to an allocated memory.
* Its content will be copied to the new memory block and freed
* @param new_size the desired new size in byte
* @return pointer to the new memory, NULL on failure
*/
void * lv_mem_realloc(void * data_p, size_t new_size);
/**
*
* @return
*/
lv_res_t lv_mem_test(void);
/**
* Give information about the work memory of dynamic allocation
* @param mon_p pointer to a lv_mem_monitor_t variable,
* the result of the analysis will be stored here
*/
void lv_mem_monitor(lv_mem_monitor_t * mon_p);
/**
* Get a temporal buffer with the given size.
* @param size the required size
*/
void * lv_mem_buf_get(uint32_t size);
/**
* Release a memory buffer
* @param p buffer to release
*/
void lv_mem_buf_release(void * p);
/**
* Free all memory buffers
*/
void lv_mem_buf_free_all(void);
//! @cond Doxygen_Suppress
#if LV_MEMCPY_MEMSET_STD
/**
* Wrapper for the standard memcpy
* @param dst pointer to the destination buffer
* @param src pointer to the source buffer
* @param len number of byte to copy
*/
static inline void * lv_memcpy(void * dst, const void * src, size_t len)
{
return memcpy(dst, src, len);
}
/**
* Wrapper for the standard memcpy
* @param dst pointer to the destination buffer
* @param src pointer to the source buffer
* @param len number of byte to copy
*/
static inline void * lv_memcpy_small(void * dst, const void * src, size_t len)
{
return memcpy(dst, src, len);
}
/**
* Wrapper for the standard memset
* @param dst pointer to the destination buffer
* @param v value to set [0..255]
* @param len number of byte to set
*/
static inline void lv_memset(void * dst, uint8_t v, size_t len)
{
memset(dst, v, len);
}
/**
* Wrapper for the standard memset with fixed 0x00 value
* @param dst pointer to the destination buffer
* @param len number of byte to set
*/
static inline void lv_memset_00(void * dst, size_t len)
{
memset(dst, 0x00, len);
}
/**
* Wrapper for the standard memset with fixed 0xFF value
* @param dst pointer to the destination buffer
* @param len number of byte to set
*/
static inline void lv_memset_ff(void * dst, size_t len)
{
memset(dst, 0xFF, len);
}
#else
/**
* Same as `memcpy` but optimized for 4 byte operation.
* @param dst pointer to the destination buffer
* @param src pointer to the source buffer
* @param len number of byte to copy
*/
LV_ATTRIBUTE_FAST_MEM void * lv_memcpy(void * dst, const void * src, size_t len);
/**
* Same as `memcpy` but optimized to copy only a few bytes.
* @param dst pointer to the destination buffer
* @param src pointer to the source buffer
* @param len number of byte to copy
*/
LV_ATTRIBUTE_FAST_MEM static inline void * lv_memcpy_small(void * dst, const void * src, size_t len)
{
uint8_t * d8 = (uint8_t *)dst;
const uint8_t * s8 = (const uint8_t *)src;
while(len) {
*d8 = *s8;
d8++;
s8++;
len--;
}
return dst;
}
/**
* Same as `memset` but optimized for 4 byte operation.
* @param dst pointer to the destination buffer
* @param v value to set [0..255]
* @param len number of byte to set
*/
LV_ATTRIBUTE_FAST_MEM void lv_memset(void * dst, uint8_t v, size_t len);
/**
* Same as `memset(dst, 0x00, len)` but optimized for 4 byte operation.
* @param dst pointer to the destination buffer
* @param len number of byte to set
*/
LV_ATTRIBUTE_FAST_MEM void lv_memset_00(void * dst, size_t len);
/**
* Same as `memset(dst, 0xFF, len)` but optimized for 4 byte operation.
* @param dst pointer to the destination buffer
* @param len number of byte to set
*/
LV_ATTRIBUTE_FAST_MEM void lv_memset_ff(void * dst, size_t len);
//! @endcond
#endif
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_MEM_H*/

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MCU/components/modules/lvgl/src/misc/lv_misc.mk Normal file
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CSRCS += lv_anim.c
CSRCS += lv_anim_timeline.c
CSRCS += lv_area.c
CSRCS += lv_async.c
CSRCS += lv_bidi.c
CSRCS += lv_color.c
CSRCS += lv_fs.c
CSRCS += lv_gc.c
CSRCS += lv_ll.c
CSRCS += lv_log.c
CSRCS += lv_lru.c
CSRCS += lv_math.c
CSRCS += lv_mem.c
CSRCS += lv_printf.c
CSRCS += lv_style.c
CSRCS += lv_style_gen.c
CSRCS += lv_timer.c
CSRCS += lv_tlsf.c
CSRCS += lv_txt.c
CSRCS += lv_txt_ap.c
CSRCS += lv_utils.c
DEPPATH += --dep-path $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/misc
VPATH += :$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/misc
CFLAGS += "-I$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/misc"

879
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///////////////////////////////////////////////////////////////////////////////
// \author (c) Marco Paland (info@paland.com)
// 2014-2019, PALANDesign Hannover, Germany
//
// \license The MIT License (MIT)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
// \brief Tiny printf, sprintf and (v)snprintf implementation, optimized for speed on
// embedded systems with a very limited resources. These routines are thread
// safe and reentrant!
// Use this instead of the bloated standard/newlib printf cause these use
// malloc for printf (and may not be thread safe).
//
///////////////////////////////////////////////////////////////////////////////
/*Original repository: https://github.com/mpaland/printf*/
#include "lv_printf.h"
#if LV_SPRINTF_CUSTOM == 0
#include <stdbool.h>
#define PRINTF_DISABLE_SUPPORT_FLOAT (!LV_SPRINTF_USE_FLOAT)
// 'ntoa' conversion buffer size, this must be big enough to hold one converted
// numeric number including padded zeros (dynamically created on stack)
// default: 32 byte
#ifndef PRINTF_NTOA_BUFFER_SIZE
#define PRINTF_NTOA_BUFFER_SIZE 32U
#endif
// 'ftoa' conversion buffer size, this must be big enough to hold one converted
// float number including padded zeros (dynamically created on stack)
// default: 32 byte
#ifndef PRINTF_FTOA_BUFFER_SIZE
#define PRINTF_FTOA_BUFFER_SIZE 32U
#endif
// support for the floating point type (%f)
// default: activated
#if !PRINTF_DISABLE_SUPPORT_FLOAT
#define PRINTF_SUPPORT_FLOAT
#endif
// support for exponential floating point notation (%e/%g)
// default: activated
#ifndef PRINTF_DISABLE_SUPPORT_EXPONENTIAL
#define PRINTF_SUPPORT_EXPONENTIAL
#endif
// define the default floating point precision
// default: 6 digits
#ifndef PRINTF_DEFAULT_FLOAT_PRECISION
#define PRINTF_DEFAULT_FLOAT_PRECISION 6U
#endif
// define the largest float suitable to print with %f
// default: 1e9
#ifndef PRINTF_MAX_FLOAT
#define PRINTF_MAX_FLOAT 1e9
#endif
// support for the long long types (%llu or %p)
// default: activated
#ifndef PRINTF_DISABLE_SUPPORT_LONG_LONG
#define PRINTF_SUPPORT_LONG_LONG
#endif
// support for the ptrdiff_t type (%t)
// ptrdiff_t is normally defined in <stddef.h> as long or long long type
// default: activated
#ifndef PRINTF_DISABLE_SUPPORT_PTRDIFF_T
#define PRINTF_SUPPORT_PTRDIFF_T
#endif
///////////////////////////////////////////////////////////////////////////////
// internal flag definitions
#define FLAGS_ZEROPAD (1U << 0U)
#define FLAGS_LEFT (1U << 1U)
#define FLAGS_PLUS (1U << 2U)
#define FLAGS_SPACE (1U << 3U)
#define FLAGS_HASH (1U << 4U)
#define FLAGS_UPPERCASE (1U << 5U)
#define FLAGS_CHAR (1U << 6U)
#define FLAGS_SHORT (1U << 7U)
#define FLAGS_LONG (1U << 8U)
#define FLAGS_LONG_LONG (1U << 9U)
#define FLAGS_PRECISION (1U << 10U)
#define FLAGS_ADAPT_EXP (1U << 11U)
// import float.h for DBL_MAX
#if defined(PRINTF_SUPPORT_FLOAT)
#include <float.h>
#endif
// output function type
typedef void (*out_fct_type)(char character, void * buffer, size_t idx, size_t maxlen);
// wrapper (used as buffer) for output function type
typedef struct {
void (*fct)(char character, void * arg);
void * arg;
} out_fct_wrap_type;
// internal buffer output
static inline void _out_buffer(char character, void * buffer, size_t idx, size_t maxlen)
{
if(idx < maxlen) {
((char *)buffer)[idx] = character;
}
}
// internal null output
static inline void _out_null(char character, void * buffer, size_t idx, size_t maxlen)
{
LV_UNUSED(character);
LV_UNUSED(buffer);
LV_UNUSED(idx);
LV_UNUSED(maxlen);
}
// internal secure strlen
// \return The length of the string (excluding the terminating 0) limited by 'maxsize'
static inline unsigned int _strnlen_s(const char * str, size_t maxsize)
{
const char * s;
for(s = str; *s && maxsize--; ++s);
return (unsigned int)(s - str);
}
// internal test if char is a digit (0-9)
// \return true if char is a digit
static inline bool _is_digit(char ch)
{
return (ch >= '0') && (ch <= '9');
}
// internal ASCII string to unsigned int conversion
static unsigned int _atoi(const char ** str)
{
unsigned int i = 0U;
while(_is_digit(**str)) {
i = i * 10U + (unsigned int)(*((*str)++) - '0');
}
return i;
}
// output the specified string in reverse, taking care of any zero-padding
static size_t _out_rev(out_fct_type out, char * buffer, size_t idx, size_t maxlen, const char * buf, size_t len,
unsigned int width, unsigned int flags)
{
const size_t start_idx = idx;
// pad spaces up to given width
if(!(flags & FLAGS_LEFT) && !(flags & FLAGS_ZEROPAD)) {
size_t i;
for(i = len; i < width; i++) {
out(' ', buffer, idx++, maxlen);
}
}
// reverse string
while(len) {
out(buf[--len], buffer, idx++, maxlen);
}
// append pad spaces up to given width
if(flags & FLAGS_LEFT) {
while(idx - start_idx < width) {
out(' ', buffer, idx++, maxlen);
}
}
return idx;
}
// internal itoa format
static size_t _ntoa_format(out_fct_type out, char * buffer, size_t idx, size_t maxlen, char * buf, size_t len,
bool negative, unsigned int base, unsigned int prec, unsigned int width, unsigned int flags)
{
// pad leading zeros
if(!(flags & FLAGS_LEFT)) {
if(width && (flags & FLAGS_ZEROPAD) && (negative || (flags & (FLAGS_PLUS | FLAGS_SPACE)))) {
width--;
}
while((len < prec) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
buf[len++] = '0';
}
while((flags & FLAGS_ZEROPAD) && (len < width) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
buf[len++] = '0';
}
}
// handle hash
if(flags & FLAGS_HASH) {
if(!(flags & FLAGS_PRECISION) && len && ((len == prec) || (len == width))) {
len--;
if(len && (base == 16U)) {
len--;
}
}
if((base == 16U) && !(flags & FLAGS_UPPERCASE) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
buf[len++] = 'x';
}
else if((base == 16U) && (flags & FLAGS_UPPERCASE) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
buf[len++] = 'X';
}
else if((base == 2U) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
buf[len++] = 'b';
}
if(len < PRINTF_NTOA_BUFFER_SIZE) {
buf[len++] = '0';
}
}
if(len < PRINTF_NTOA_BUFFER_SIZE) {
if(negative) {
buf[len++] = '-';
}
else if(flags & FLAGS_PLUS) {
buf[len++] = '+'; // ignore the space if the '+' exists
}
else if(flags & FLAGS_SPACE) {
buf[len++] = ' ';
}
}
return _out_rev(out, buffer, idx, maxlen, buf, len, width, flags);
}
// internal itoa for 'long' type
static size_t _ntoa_long(out_fct_type out, char * buffer, size_t idx, size_t maxlen, unsigned long value, bool negative,
unsigned long base, unsigned int prec, unsigned int width, unsigned int flags)
{
char buf[PRINTF_NTOA_BUFFER_SIZE];
size_t len = 0U;
// no hash for 0 values
if(!value) {
flags &= ~FLAGS_HASH;
}
// write if precision != 0 and value is != 0
if(!(flags & FLAGS_PRECISION) || value) {
do {
const char digit = (char)(value % base);
buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10;
value /= base;
} while(value && (len < PRINTF_NTOA_BUFFER_SIZE));
}
return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative, (unsigned int)base, prec, width, flags);
}
// internal itoa for 'long long' type
#if defined(PRINTF_SUPPORT_LONG_LONG)
static size_t _ntoa_long_long(out_fct_type out, char * buffer, size_t idx, size_t maxlen, unsigned long long value,
bool negative, unsigned long long base, unsigned int prec, unsigned int width, unsigned int flags)
{
char buf[PRINTF_NTOA_BUFFER_SIZE];
size_t len = 0U;
// no hash for 0 values
if(!value) {
flags &= ~FLAGS_HASH;
}
// write if precision != 0 and value is != 0
if(!(flags & FLAGS_PRECISION) || value) {
do {
const char digit = (char)(value % base);
buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10;
value /= base;
} while(value && (len < PRINTF_NTOA_BUFFER_SIZE));
}
return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative, (unsigned int)base, prec, width, flags);
}
#endif // PRINTF_SUPPORT_LONG_LONG
#if defined(PRINTF_SUPPORT_FLOAT)
#if defined(PRINTF_SUPPORT_EXPONENTIAL)
// forward declaration so that _ftoa can switch to exp notation for values > PRINTF_MAX_FLOAT
static size_t _etoa(out_fct_type out, char * buffer, size_t idx, size_t maxlen, double value, unsigned int prec,
unsigned int width, unsigned int flags);
#endif
// internal ftoa for fixed decimal floating point
static size_t _ftoa(out_fct_type out, char * buffer, size_t idx, size_t maxlen, double value, unsigned int prec,
unsigned int width, unsigned int flags)
{
char buf[PRINTF_FTOA_BUFFER_SIZE];
size_t len = 0U;
double diff = 0.0;
// powers of 10
static const double pow10[] = { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000 };
// test for special values
if(value != value)
return _out_rev(out, buffer, idx, maxlen, "nan", 3, width, flags);
if(value < -DBL_MAX)
return _out_rev(out, buffer, idx, maxlen, "fni-", 4, width, flags);
if(value > DBL_MAX)
return _out_rev(out, buffer, idx, maxlen, (flags & FLAGS_PLUS) ? "fni+" : "fni", (flags & FLAGS_PLUS) ? 4U : 3U, width,
flags);
// test for very large values
// standard printf behavior is to print EVERY whole number digit -- which could be 100s of characters overflowing your buffers == bad
if((value > PRINTF_MAX_FLOAT) || (value < -PRINTF_MAX_FLOAT)) {
#if defined(PRINTF_SUPPORT_EXPONENTIAL)
return _etoa(out, buffer, idx, maxlen, value, prec, width, flags);
#else
return 0U;
#endif
}
// test for negative
bool negative = false;
if(value < 0) {
negative = true;
value = 0 - value;
}
// set default precision, if not set explicitly
if(!(flags & FLAGS_PRECISION)) {
prec = PRINTF_DEFAULT_FLOAT_PRECISION;
}
// limit precision to 9, cause a prec >= 10 can lead to overflow errors
while((len < PRINTF_FTOA_BUFFER_SIZE) && (prec > 9U)) {
buf[len++] = '0';
prec--;
}
int whole = (int)value;
double tmp = (value - whole) * pow10[prec];
unsigned long frac = (unsigned long)tmp;
diff = tmp - frac;
if(diff > 0.5) {
++frac;
// handle rollover, e.g. case 0.99 with prec 1 is 1.0
if(frac >= pow10[prec]) {
frac = 0;
++whole;
}
}
else if(diff < 0.5) {
}
else if((frac == 0U) || (frac & 1U)) {
// if halfway, round up if odd OR if last digit is 0
++frac;
}
if(prec == 0U) {
diff = value - (double)whole;
if((!(diff < 0.5) || (diff > 0.5)) && (whole & 1)) {
// exactly 0.5 and ODD, then round up
// 1.5 -> 2, but 2.5 -> 2
++whole;
}
}
else {
unsigned int count = prec;
// now do fractional part, as an unsigned number
while(len < PRINTF_FTOA_BUFFER_SIZE) {
--count;
buf[len++] = (char)(48U + (frac % 10U));
if(!(frac /= 10U)) {
break;
}
}
// add extra 0s
while((len < PRINTF_FTOA_BUFFER_SIZE) && (count-- > 0U)) {
buf[len++] = '0';
}
if(len < PRINTF_FTOA_BUFFER_SIZE) {
// add decimal
buf[len++] = '.';
}
}
// do whole part, number is reversed
while(len < PRINTF_FTOA_BUFFER_SIZE) {
buf[len++] = (char)(48 + (whole % 10));
if(!(whole /= 10)) {
break;
}
}
// pad leading zeros
if(!(flags & FLAGS_LEFT) && (flags & FLAGS_ZEROPAD)) {
if(width && (negative || (flags & (FLAGS_PLUS | FLAGS_SPACE)))) {
width--;
}
while((len < width) && (len < PRINTF_FTOA_BUFFER_SIZE)) {
buf[len++] = '0';
}
}
if(len < PRINTF_FTOA_BUFFER_SIZE) {
if(negative) {
buf[len++] = '-';
}
else if(flags & FLAGS_PLUS) {
buf[len++] = '+'; // ignore the space if the '+' exists
}
else if(flags & FLAGS_SPACE) {
buf[len++] = ' ';
}
}
return _out_rev(out, buffer, idx, maxlen, buf, len, width, flags);
}
#if defined(PRINTF_SUPPORT_EXPONENTIAL)
// internal ftoa variant for exponential floating-point type, contributed by Martijn Jasperse <m.jasperse@gmail.com>
static size_t _etoa(out_fct_type out, char * buffer, size_t idx, size_t maxlen, double value, unsigned int prec,
unsigned int width, unsigned int flags)
{
// check for NaN and special values
if((value != value) || (value > DBL_MAX) || (value < -DBL_MAX)) {
return _ftoa(out, buffer, idx, maxlen, value, prec, width, flags);
}
// determine the sign
const bool negative = value < 0;
if(negative) {
value = -value;
}
// default precision
if(!(flags & FLAGS_PRECISION)) {
prec = PRINTF_DEFAULT_FLOAT_PRECISION;
}
// determine the decimal exponent
// based on the algorithm by David Gay (https://www.ampl.com/netlib/fp/dtoa.c)
union {
uint64_t U;
double F;
} conv;
conv.F = value;
int exp2 = (int)((conv.U >> 52U) & 0x07FFU) - 1023; // effectively log2
conv.U = (conv.U & ((1ULL << 52U) - 1U)) | (1023ULL << 52U); // drop the exponent so conv.F is now in [1,2)
// now approximate log10 from the log2 integer part and an expansion of ln around 1.5
int expval = (int)(0.1760912590558 + exp2 * 0.301029995663981 + (conv.F - 1.5) * 0.289529654602168);
// now we want to compute 10^expval but we want to be sure it won't overflow
exp2 = (int)(expval * 3.321928094887362 + 0.5);
const double z = expval * 2.302585092994046 - exp2 * 0.6931471805599453;
const double z2 = z * z;
conv.U = (uint64_t)(exp2 + 1023) << 52U;
// compute exp(z) using continued fractions, see https://en.wikipedia.org/wiki/Exponential_function#Continued_fractions_for_ex
conv.F *= 1 + 2 * z / (2 - z + (z2 / (6 + (z2 / (10 + z2 / 14)))));
// correct for rounding errors
if(value < conv.F) {
expval--;
conv.F /= 10;
}
// the exponent format is "%+03d" and largest value is "307", so set aside 4-5 characters
unsigned int minwidth = ((expval < 100) && (expval > -100)) ? 4U : 5U;
// in "%g" mode, "prec" is the number of *significant figures* not decimals
if(flags & FLAGS_ADAPT_EXP) {
// do we want to fall-back to "%f" mode?
if((value >= 1e-4) && (value < 1e6)) {
if((int)prec > expval) {
prec = (unsigned)((int)prec - expval - 1);
}
else {
prec = 0;
}
flags |= FLAGS_PRECISION; // make sure _ftoa respects precision
// no characters in exponent
minwidth = 0U;
expval = 0;
}
else {
// we use one sigfig for the whole part
if((prec > 0) && (flags & FLAGS_PRECISION)) {
--prec;
}
}
}
// will everything fit?
unsigned int fwidth = width;
if(width > minwidth) {
// we didn't fall-back so subtract the characters required for the exponent
fwidth -= minwidth;
}
else {
// not enough characters, so go back to default sizing
fwidth = 0U;
}
if((flags & FLAGS_LEFT) && minwidth) {
// if we're padding on the right, DON'T pad the floating part
fwidth = 0U;
}
// rescale the float value
if(expval) {
value /= conv.F;
}
// output the floating part
const size_t start_idx = idx;
idx = _ftoa(out, buffer, idx, maxlen, negative ? -value : value, prec, fwidth, flags & ~FLAGS_ADAPT_EXP);
// output the exponent part
if(minwidth) {
// output the exponential symbol
out((flags & FLAGS_UPPERCASE) ? 'E' : 'e', buffer, idx++, maxlen);
// output the exponent value
idx = _ntoa_long(out, buffer, idx, maxlen, (expval < 0) ? -expval : expval, expval < 0, 10, 0, minwidth - 1,
FLAGS_ZEROPAD | FLAGS_PLUS);
// might need to right-pad spaces
if(flags & FLAGS_LEFT) {
while(idx - start_idx < width) out(' ', buffer, idx++, maxlen);
}
}
return idx;
}
#endif // PRINTF_SUPPORT_EXPONENTIAL
#endif // PRINTF_SUPPORT_FLOAT
// internal vsnprintf
static int _vsnprintf(out_fct_type out, char * buffer, const size_t maxlen, const char * format, va_list va)
{
unsigned int flags, width, precision, n;
size_t idx = 0U;
if(!buffer) {
// use null output function
out = _out_null;
}
while(*format) {
// format specifier? %[flags][width][.precision][length]
if(*format != '%') {
// no
out(*format, buffer, idx++, maxlen);
format++;
continue;
}
else {
// yes, evaluate it
format++;
}
// evaluate flags
flags = 0U;
do {
switch(*format) {
case '0':
flags |= FLAGS_ZEROPAD;
format++;
n = 1U;
break;
case '-':
flags |= FLAGS_LEFT;
format++;
n = 1U;
break;
case '+':
flags |= FLAGS_PLUS;
format++;
n = 1U;
break;
case ' ':
flags |= FLAGS_SPACE;
format++;
n = 1U;
break;
case '#':
flags |= FLAGS_HASH;
format++;
n = 1U;
break;
default :
n = 0U;
break;
}
} while(n);
// evaluate width field
width = 0U;
if(_is_digit(*format)) {
width = _atoi(&format);
}
else if(*format == '*') {
const int w = va_arg(va, int);
if(w < 0) {
flags |= FLAGS_LEFT; // reverse padding
width = (unsigned int) - w;
}
else {
width = (unsigned int)w;
}
format++;
}
// evaluate precision field
precision = 0U;
if(*format == '.') {
flags |= FLAGS_PRECISION;
format++;
if(_is_digit(*format)) {
precision = _atoi(&format);
}
else if(*format == '*') {
const int prec = (int)va_arg(va, int);
precision = prec > 0 ? (unsigned int)prec : 0U;
format++;
}
}
// evaluate length field
switch(*format) {
case 'l' :
flags |= FLAGS_LONG;
format++;
if(*format == 'l') {
flags |= FLAGS_LONG_LONG;
format++;
}
break;
case 'h' :
flags |= FLAGS_SHORT;
format++;
if(*format == 'h') {
flags |= FLAGS_CHAR;
format++;
}
break;
#if defined(PRINTF_SUPPORT_PTRDIFF_T)
case 't' :
flags |= (sizeof(ptrdiff_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
format++;
break;
#endif
case 'j' :
flags |= (sizeof(intmax_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
format++;
break;
case 'z' :
flags |= (sizeof(size_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
format++;
break;
default :
break;
}
// evaluate specifier
switch(*format) {
case 'd' :
case 'i' :
case 'u' :
case 'x' :
case 'X' :
case 'p' :
case 'P' :
case 'o' :
case 'b' : {
// set the base
unsigned int base;
if(*format == 'x' || *format == 'X') {
base = 16U;
}
else if(*format == 'p' || *format == 'P') {
base = 16U;
flags |= FLAGS_HASH; // always hash for pointer format
#if defined(PRINTF_SUPPORT_LONG_LONG)
if(sizeof(uintptr_t) == sizeof(long long))
flags |= FLAGS_LONG_LONG;
else
#endif
flags |= FLAGS_LONG;
if(*(format + 1) == 'V')
format++;
}
else if(*format == 'o') {
base = 8U;
}
else if(*format == 'b') {
base = 2U;
}
else {
base = 10U;
flags &= ~FLAGS_HASH; // no hash for dec format
}
// uppercase
if(*format == 'X' || *format == 'P') {
flags |= FLAGS_UPPERCASE;
}
// no plus or space flag for u, x, X, o, b
if((*format != 'i') && (*format != 'd')) {
flags &= ~(FLAGS_PLUS | FLAGS_SPACE);
}
// ignore '0' flag when precision is given
if(flags & FLAGS_PRECISION) {
flags &= ~FLAGS_ZEROPAD;
}
// convert the integer
if((*format == 'i') || (*format == 'd')) {
// signed
if(flags & FLAGS_LONG_LONG) {
#if defined(PRINTF_SUPPORT_LONG_LONG)
const long long value = va_arg(va, long long);
idx = _ntoa_long_long(out, buffer, idx, maxlen, (unsigned long long)(value > 0 ? value : 0 - value), value < 0, base,
precision, width, flags);
#endif
}
else if(flags & FLAGS_LONG) {
const long value = va_arg(va, long);
idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned long)(value > 0 ? value : 0 - value), value < 0, base, precision,
width, flags);
}
else {
const int value = (flags & FLAGS_CHAR) ? (char)va_arg(va, int) : (flags & FLAGS_SHORT) ? (short int)va_arg(va,
int) : va_arg(va, int);
idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned int)(value > 0 ? value : 0 - value), value < 0, base, precision,
width, flags);
}
}
else if(*format == 'V') {
lv_vaformat_t * vaf = va_arg(va, lv_vaformat_t *);
va_list copy;
va_copy(copy, *vaf->va);
idx += _vsnprintf(out, buffer + idx, maxlen - idx, vaf->fmt, copy);
va_end(copy);
}
else {
// unsigned
if(flags & FLAGS_LONG_LONG) {
#if defined(PRINTF_SUPPORT_LONG_LONG)
idx = _ntoa_long_long(out, buffer, idx, maxlen, va_arg(va, unsigned long long), false, base, precision, width, flags);
#endif
}
else if(flags & FLAGS_LONG) {
idx = _ntoa_long(out, buffer, idx, maxlen, va_arg(va, unsigned long), false, base, precision, width, flags);
}
else {
const unsigned int value = (flags & FLAGS_CHAR) ? (unsigned char)va_arg(va,
unsigned int) : (flags & FLAGS_SHORT) ? (unsigned short int)va_arg(va, unsigned int) : va_arg(va, unsigned int);
idx = _ntoa_long(out, buffer, idx, maxlen, value, false, base, precision, width, flags);
}
}
format++;
break;
}
#if defined(PRINTF_SUPPORT_FLOAT)
case 'f' :
case 'F' :
if(*format == 'F') flags |= FLAGS_UPPERCASE;
idx = _ftoa(out, buffer, idx, maxlen, va_arg(va, double), precision, width, flags);
format++;
break;
#if defined(PRINTF_SUPPORT_EXPONENTIAL)
case 'e':
case 'E':
case 'g':
case 'G':
if((*format == 'g') || (*format == 'G')) flags |= FLAGS_ADAPT_EXP;
if((*format == 'E') || (*format == 'G')) flags |= FLAGS_UPPERCASE;
idx = _etoa(out, buffer, idx, maxlen, va_arg(va, double), precision, width, flags);
format++;
break;
#endif // PRINTF_SUPPORT_EXPONENTIAL
#endif // PRINTF_SUPPORT_FLOAT
case 'c' : {
unsigned int l = 1U;
// pre padding
if(!(flags & FLAGS_LEFT)) {
while(l++ < width) {
out(' ', buffer, idx++, maxlen);
}
}
// char output
out((char)va_arg(va, int), buffer, idx++, maxlen);
// post padding
if(flags & FLAGS_LEFT) {
while(l++ < width) {
out(' ', buffer, idx++, maxlen);
}
}
format++;
break;
}
case 's' : {
const char * p = va_arg(va, char *);
unsigned int l = _strnlen_s(p, precision ? precision : (size_t) -1);
// pre padding
if(flags & FLAGS_PRECISION) {
l = (l < precision ? l : precision);
}
if(!(flags & FLAGS_LEFT)) {
while(l++ < width) {
out(' ', buffer, idx++, maxlen);
}
}
// string output
while((*p != 0) && (!(flags & FLAGS_PRECISION) || precision--)) {
out(*(p++), buffer, idx++, maxlen);
}
// post padding
if(flags & FLAGS_LEFT) {
while(l++ < width) {
out(' ', buffer, idx++, maxlen);
}
}
format++;
break;
}
case '%' :
out('%', buffer, idx++, maxlen);
format++;
break;
default :
out(*format, buffer, idx++, maxlen);
format++;
break;
}
}
// termination
out((char)0, buffer, idx < maxlen ? idx : maxlen - 1U, maxlen);
// return written chars without terminating \0
return (int)idx;
}
///////////////////////////////////////////////////////////////////////////////
int lv_snprintf(char * buffer, size_t count, const char * format, ...)
{
va_list va;
va_start(va, format);
const int ret = _vsnprintf(_out_buffer, buffer, count, format, va);
va_end(va);
return ret;
}
int lv_vsnprintf(char * buffer, size_t count, const char * format, va_list va)
{
return _vsnprintf(_out_buffer, buffer, count, format, va);
}
#endif /*LV_SPRINTF_CUSTOM*/

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MCU/components/modules/lvgl/src/misc/lv_printf.h Normal file
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@ -0,0 +1,92 @@
///////////////////////////////////////////////////////////////////////////////
// \author (c) Marco Paland (info@paland.com)
// 2014-2019, PALANDesign Hannover, Germany
//
// \license The MIT License (MIT)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
// \brief Tiny printf, sprintf and snprintf implementation, optimized for speed on
// embedded systems with a very limited resources.
// Use this instead of bloated standard/newlib printf.
// These routines are thread safe and reentrant.
//
///////////////////////////////////////////////////////////////////////////////
/*Original repository: https://github.com/mpaland/printf*/
#ifndef _LV_PRINTF_H_
#define _LV_PRINTF_H_
#if defined(__has_include)
#if __has_include(<inttypes.h>)
#include <inttypes.h>
/* platform-specific printf format for int32_t, usually "d" or "ld" */
#define LV_PRId32 PRId32
#define LV_PRIu32 PRIu32
#else
#define LV_PRId32 "d"
#define LV_PRIu32 "u"
#endif
#else
/* hope this is correct for ports without __has_include or without inttypes.h */
#define LV_PRId32 "d"
#define LV_PRIu32 "u"
#endif
#ifdef __cplusplus
extern "C" {
#endif
#include "../lv_conf_internal.h"
#if LV_SPRINTF_CUSTOM == 0
#include <stdarg.h>
#include <stddef.h>
#include "lv_types.h"
typedef struct {
const char * fmt;
va_list * va;
} lv_vaformat_t;
/**
* Tiny snprintf/vsnprintf implementation
* \param buffer A pointer to the buffer where to store the formatted string
* \param count The maximum number of characters to store in the buffer, including a terminating null character
* \param format A string that specifies the format of the output
* \param va A value identifying a variable arguments list
* \return The number of characters that COULD have been written into the buffer, not counting the terminating
* null character. A value equal or larger than count indicates truncation. Only when the returned value
* is non-negative and less than count, the string has been completely written.
*/
int lv_snprintf(char * buffer, size_t count, const char * format, ...) LV_FORMAT_ATTRIBUTE(3, 4);
int lv_vsnprintf(char * buffer, size_t count, const char * format, va_list va) LV_FORMAT_ATTRIBUTE(3, 0);
#else
#include LV_SPRINTF_INCLUDE
#endif
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif // _LV_PRINTF_H_

485
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/**
* @file lv_style.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_style.h"
#include "../misc/lv_gc.h"
#include "../misc/lv_mem.h"
#include "lv_assert.h"
#include "lv_types.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_style_set_prop_internal(lv_style_t * style, lv_style_prop_t prop_and_meta, lv_style_value_t value,
void (*value_adjustment_helper)(lv_style_prop_t, lv_style_value_t, uint16_t *, lv_style_value_t *));
static void lv_style_set_prop_helper(lv_style_prop_t prop, lv_style_value_t value, uint16_t * prop_storage,
lv_style_value_t * value_storage);
static void lv_style_set_prop_meta_helper(lv_style_prop_t prop, lv_style_value_t value, uint16_t * prop_storage,
lv_style_value_t * value_storage);
/**********************
* GLOBAL VARIABLES
**********************/
const uint8_t _lv_style_builtin_prop_flag_lookup_table[_LV_STYLE_NUM_BUILT_IN_PROPS] = {
[LV_STYLE_WIDTH] = LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_MIN_WIDTH] = LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_MAX_WIDTH] = LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_HEIGHT] = LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_MIN_HEIGHT] = LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_MAX_HEIGHT] = LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_X] = LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_Y] = LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_ALIGN] = LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_TRANSFORM_WIDTH] = LV_STYLE_PROP_EXT_DRAW,
[LV_STYLE_TRANSFORM_HEIGHT] = LV_STYLE_PROP_EXT_DRAW,
[LV_STYLE_TRANSLATE_X] = LV_STYLE_PROP_LAYOUT_REFR | LV_STYLE_PROP_PARENT_LAYOUT_REFR,
[LV_STYLE_TRANSLATE_Y] = LV_STYLE_PROP_LAYOUT_REFR | LV_STYLE_PROP_PARENT_LAYOUT_REFR,
[LV_STYLE_TRANSFORM_ZOOM] = LV_STYLE_PROP_EXT_DRAW | LV_STYLE_PROP_LAYER_REFR,
[LV_STYLE_TRANSFORM_ANGLE] = LV_STYLE_PROP_EXT_DRAW | LV_STYLE_PROP_LAYER_REFR,
[LV_STYLE_PAD_TOP] = LV_STYLE_PROP_EXT_DRAW | LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_PAD_BOTTOM] = LV_STYLE_PROP_EXT_DRAW | LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_PAD_LEFT] = LV_STYLE_PROP_EXT_DRAW | LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_PAD_RIGHT] = LV_STYLE_PROP_EXT_DRAW | LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_PAD_ROW] = LV_STYLE_PROP_EXT_DRAW | LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_PAD_COLUMN] = LV_STYLE_PROP_EXT_DRAW | LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_BG_COLOR] = 0,
[LV_STYLE_BG_OPA] = 0,
[LV_STYLE_BG_GRAD_COLOR] = 0,
[LV_STYLE_BG_GRAD_DIR] = 0,
[LV_STYLE_BG_MAIN_STOP] = 0,
[LV_STYLE_BG_GRAD_STOP] = 0,
[LV_STYLE_BG_GRAD] = 0,
[LV_STYLE_BG_DITHER_MODE] = 0,
[LV_STYLE_BG_IMG_SRC] = LV_STYLE_PROP_EXT_DRAW,
[LV_STYLE_BG_IMG_OPA] = 0,
[LV_STYLE_BG_IMG_RECOLOR] = 0,
[LV_STYLE_BG_IMG_RECOLOR_OPA] = 0,
[LV_STYLE_BG_IMG_TILED] = 0,
[LV_STYLE_BORDER_COLOR] = 0,
[LV_STYLE_BORDER_OPA] = 0,
[LV_STYLE_BORDER_WIDTH] = LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_BORDER_SIDE] = 0,
[LV_STYLE_BORDER_POST] = 0,
[LV_STYLE_OUTLINE_WIDTH] = LV_STYLE_PROP_EXT_DRAW,
[LV_STYLE_OUTLINE_COLOR] = 0,
[LV_STYLE_OUTLINE_OPA] = LV_STYLE_PROP_EXT_DRAW,
[LV_STYLE_OUTLINE_PAD] = LV_STYLE_PROP_EXT_DRAW,
[LV_STYLE_SHADOW_WIDTH] = LV_STYLE_PROP_EXT_DRAW,
[LV_STYLE_SHADOW_OFS_X] = LV_STYLE_PROP_EXT_DRAW,
[LV_STYLE_SHADOW_OFS_Y] = LV_STYLE_PROP_EXT_DRAW,
[LV_STYLE_SHADOW_SPREAD] = LV_STYLE_PROP_EXT_DRAW,
[LV_STYLE_SHADOW_COLOR] = 0,
[LV_STYLE_SHADOW_OPA] = LV_STYLE_PROP_EXT_DRAW,
[LV_STYLE_IMG_OPA] = 0,
[LV_STYLE_IMG_RECOLOR] = 0,
[LV_STYLE_IMG_RECOLOR_OPA] = 0,
[LV_STYLE_LINE_WIDTH] = LV_STYLE_PROP_EXT_DRAW,
[LV_STYLE_LINE_DASH_WIDTH] = 0,
[LV_STYLE_LINE_DASH_GAP] = 0,
[LV_STYLE_LINE_ROUNDED] = 0,
[LV_STYLE_LINE_COLOR] = 0,
[LV_STYLE_LINE_OPA] = 0,
[LV_STYLE_ARC_WIDTH] = LV_STYLE_PROP_EXT_DRAW,
[LV_STYLE_ARC_ROUNDED] = 0,
[LV_STYLE_ARC_COLOR] = 0,
[LV_STYLE_ARC_OPA] = 0,
[LV_STYLE_ARC_IMG_SRC] = 0,
[LV_STYLE_TEXT_COLOR] = LV_STYLE_PROP_INHERIT,
[LV_STYLE_TEXT_OPA] = LV_STYLE_PROP_INHERIT,
[LV_STYLE_TEXT_FONT] = LV_STYLE_PROP_INHERIT | LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_TEXT_LETTER_SPACE] = LV_STYLE_PROP_INHERIT | LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_TEXT_LINE_SPACE] = LV_STYLE_PROP_INHERIT | LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_TEXT_DECOR] = LV_STYLE_PROP_INHERIT,
[LV_STYLE_TEXT_ALIGN] = LV_STYLE_PROP_INHERIT | LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_RADIUS] = 0,
[LV_STYLE_CLIP_CORNER] = 0,
[LV_STYLE_OPA] = LV_STYLE_PROP_LAYER_REFR,
[LV_STYLE_COLOR_FILTER_DSC] = LV_STYLE_PROP_INHERIT,
[LV_STYLE_COLOR_FILTER_OPA] = LV_STYLE_PROP_INHERIT,
[LV_STYLE_ANIM_TIME] = 0,
[LV_STYLE_ANIM_SPEED] = 0,
[LV_STYLE_TRANSITION] = 0,
[LV_STYLE_BLEND_MODE] = LV_STYLE_PROP_LAYER_REFR,
[LV_STYLE_LAYOUT] = LV_STYLE_PROP_LAYOUT_REFR,
[LV_STYLE_BASE_DIR] = LV_STYLE_PROP_INHERIT | LV_STYLE_PROP_LAYOUT_REFR,
};
uint32_t _lv_style_custom_prop_flag_lookup_table_size = 0;
/**********************
* STATIC VARIABLES
**********************/
static uint16_t last_custom_prop_id = (uint16_t)_LV_STYLE_LAST_BUILT_IN_PROP;
static const lv_style_value_t null_style_value = { .num = 0 };
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void lv_style_init(lv_style_t * style)
{
#if LV_USE_ASSERT_STYLE
if(style->sentinel == LV_STYLE_SENTINEL_VALUE && style->prop_cnt > 1) {
LV_LOG_WARN("Style might be already inited. (Potential memory leak)");
}
#endif
lv_memset_00(style, sizeof(lv_style_t));
#if LV_USE_ASSERT_STYLE
style->sentinel = LV_STYLE_SENTINEL_VALUE;
#endif
}
void lv_style_reset(lv_style_t * style)
{
LV_ASSERT_STYLE(style);
if(style->prop1 == LV_STYLE_PROP_ANY) {
LV_LOG_ERROR("Cannot reset const style");
return;
}
if(style->prop_cnt > 1) lv_mem_free(style->v_p.values_and_props);
lv_memset_00(style, sizeof(lv_style_t));
#if LV_USE_ASSERT_STYLE
style->sentinel = LV_STYLE_SENTINEL_VALUE;
#endif
}
lv_style_prop_t lv_style_register_prop(uint8_t flag)
{
if(LV_GC_ROOT(_lv_style_custom_prop_flag_lookup_table) == NULL) {
_lv_style_custom_prop_flag_lookup_table_size = 0;
last_custom_prop_id = (uint16_t)_LV_STYLE_LAST_BUILT_IN_PROP;
}
if(((last_custom_prop_id + 1) & LV_STYLE_PROP_META_MASK) != 0) {
LV_LOG_ERROR("No more custom property IDs available");
return LV_STYLE_PROP_INV;
}
/*
* Allocate the lookup table if it's not yet available.
*/
size_t required_size = (last_custom_prop_id + 1 - _LV_STYLE_LAST_BUILT_IN_PROP);
if(_lv_style_custom_prop_flag_lookup_table_size < required_size) {
/* Round required_size up to the nearest 32-byte value */
required_size = (required_size + 31) & ~31;
LV_ASSERT_MSG(required_size > 0, "required size has become 0?");
uint8_t * old_p = LV_GC_ROOT(_lv_style_custom_prop_flag_lookup_table);
uint8_t * new_p = lv_mem_realloc(old_p, required_size * sizeof(uint8_t));
if(new_p == NULL) {
LV_LOG_ERROR("Unable to allocate space for custom property lookup table");
return LV_STYLE_PROP_INV;
}
LV_GC_ROOT(_lv_style_custom_prop_flag_lookup_table) = new_p;
_lv_style_custom_prop_flag_lookup_table_size = required_size;
}
last_custom_prop_id++;
/* This should never happen - we should bail out above */
LV_ASSERT_NULL(LV_GC_ROOT(_lv_style_custom_prop_flag_lookup_table));
LV_GC_ROOT(_lv_style_custom_prop_flag_lookup_table)[last_custom_prop_id - _LV_STYLE_NUM_BUILT_IN_PROPS] = flag;
return last_custom_prop_id;
}
lv_style_prop_t lv_style_get_num_custom_props(void)
{
return last_custom_prop_id - _LV_STYLE_LAST_BUILT_IN_PROP;
}
bool lv_style_remove_prop(lv_style_t * style, lv_style_prop_t prop)
{
LV_ASSERT_STYLE(style);
if(style->prop1 == LV_STYLE_PROP_ANY) {
LV_LOG_ERROR("Cannot remove prop from const style");
return false;
}
if(style->prop_cnt == 0) return false;
if(style->prop_cnt == 1) {
if(LV_STYLE_PROP_ID_MASK(style->prop1) == prop) {
style->prop1 = LV_STYLE_PROP_INV;
style->prop_cnt = 0;
return true;
}
return false;
}
uint8_t * tmp = style->v_p.values_and_props + style->prop_cnt * sizeof(lv_style_value_t);
uint16_t * old_props = (uint16_t *)tmp;
uint32_t i;
for(i = 0; i < style->prop_cnt; i++) {
if(LV_STYLE_PROP_ID_MASK(old_props[i]) == prop) {
lv_style_value_t * old_values = (lv_style_value_t *)style->v_p.values_and_props;
if(style->prop_cnt == 2) {
style->prop_cnt = 1;
style->prop1 = i == 0 ? old_props[1] : old_props[0];
style->v_p.value1 = i == 0 ? old_values[1] : old_values[0];
}
else {
size_t size = (style->prop_cnt - 1) * (sizeof(lv_style_value_t) + sizeof(uint16_t));
uint8_t * new_values_and_props = lv_mem_alloc(size);
if(new_values_and_props == NULL) return false;
style->v_p.values_and_props = new_values_and_props;
style->prop_cnt--;
tmp = new_values_and_props + style->prop_cnt * sizeof(lv_style_value_t);
uint16_t * new_props = (uint16_t *)tmp;
lv_style_value_t * new_values = (lv_style_value_t *)new_values_and_props;
uint32_t j;
for(i = j = 0; j <= style->prop_cnt;
j++) { /*<=: because prop_cnt already reduced but all the old props. needs to be checked.*/
if(old_props[j] != prop) {
new_values[i] = old_values[j];
new_props[i++] = old_props[j];
}
}
}
lv_mem_free(old_values);
return true;
}
}
return false;
}
void lv_style_set_prop(lv_style_t * style, lv_style_prop_t prop, lv_style_value_t value)
{
lv_style_set_prop_internal(style, prop, value, lv_style_set_prop_helper);
}
void lv_style_set_prop_meta(lv_style_t * style, lv_style_prop_t prop, uint16_t meta)
{
lv_style_set_prop_internal(style, prop | meta, null_style_value, lv_style_set_prop_meta_helper);
}
lv_style_res_t lv_style_get_prop(const lv_style_t * style, lv_style_prop_t prop, lv_style_value_t * value)
{
return lv_style_get_prop_inlined(style, prop, value);
}
void lv_style_transition_dsc_init(lv_style_transition_dsc_t * tr, const lv_style_prop_t props[],
lv_anim_path_cb_t path_cb, uint32_t time, uint32_t delay, void * user_data)
{
lv_memset_00(tr, sizeof(lv_style_transition_dsc_t));
tr->props = props;
tr->path_xcb = path_cb == NULL ? lv_anim_path_linear : path_cb;
tr->time = time;
tr->delay = delay;
#if LV_USE_USER_DATA
tr->user_data = user_data;
#else
LV_UNUSED(user_data);
#endif
}
lv_style_value_t lv_style_prop_get_default(lv_style_prop_t prop)
{
lv_style_value_t value;
switch(prop) {
case LV_STYLE_TRANSFORM_ZOOM:
value.num = LV_IMG_ZOOM_NONE;
break;
case LV_STYLE_BG_COLOR:
value.color = lv_color_white();
break;
case LV_STYLE_BG_GRAD_COLOR:
case LV_STYLE_BORDER_COLOR:
case LV_STYLE_SHADOW_COLOR:
case LV_STYLE_OUTLINE_COLOR:
case LV_STYLE_ARC_COLOR:
case LV_STYLE_LINE_COLOR:
case LV_STYLE_TEXT_COLOR:
case LV_STYLE_IMG_RECOLOR:
value.color = lv_color_black();
break;
case LV_STYLE_OPA:
case LV_STYLE_BORDER_OPA:
case LV_STYLE_TEXT_OPA:
case LV_STYLE_IMG_OPA:
case LV_STYLE_BG_IMG_OPA:
case LV_STYLE_OUTLINE_OPA:
case LV_STYLE_SHADOW_OPA:
case LV_STYLE_LINE_OPA:
case LV_STYLE_ARC_OPA:
value.num = LV_OPA_COVER;
break;
case LV_STYLE_BG_GRAD_STOP:
value.num = 255;
break;
case LV_STYLE_BORDER_SIDE:
value.num = LV_BORDER_SIDE_FULL;
break;
case LV_STYLE_TEXT_FONT:
value.ptr = LV_FONT_DEFAULT;
break;
case LV_STYLE_MAX_WIDTH:
case LV_STYLE_MAX_HEIGHT:
value.num = LV_COORD_MAX;
break;
default:
value.ptr = NULL;
value.num = 0;
break;
}
return value;
}
bool lv_style_is_empty(const lv_style_t * style)
{
LV_ASSERT_STYLE(style);
return style->prop_cnt == 0 ? true : false;
}
uint8_t _lv_style_get_prop_group(lv_style_prop_t prop)
{
uint16_t group = (prop & 0x1FF) >> 4;
if(group > 7) group = 7; /*The MSB marks all the custom properties*/
return (uint8_t)group;
}
uint8_t _lv_style_prop_lookup_flags(lv_style_prop_t prop)
{
extern const uint8_t _lv_style_builtin_prop_flag_lookup_table[];
extern uint32_t _lv_style_custom_prop_flag_lookup_table_size;
if(prop == LV_STYLE_PROP_ANY) return LV_STYLE_PROP_ALL; /*Any prop can have any flags*/
if(prop == LV_STYLE_PROP_INV) return 0;
if(prop < _LV_STYLE_NUM_BUILT_IN_PROPS)
return _lv_style_builtin_prop_flag_lookup_table[prop];
prop -= _LV_STYLE_NUM_BUILT_IN_PROPS;
if(LV_GC_ROOT(_lv_style_custom_prop_flag_lookup_table) != NULL && prop < _lv_style_custom_prop_flag_lookup_table_size)
return LV_GC_ROOT(_lv_style_custom_prop_flag_lookup_table)[prop];
return 0;
}
/**********************
* STATIC FUNCTIONS
**********************/
static void lv_style_set_prop_helper(lv_style_prop_t prop, lv_style_value_t value, uint16_t * prop_storage,
lv_style_value_t * value_storage)
{
*prop_storage = prop;
*value_storage = value;
}
static void lv_style_set_prop_meta_helper(lv_style_prop_t prop, lv_style_value_t value, uint16_t * prop_storage,
lv_style_value_t * value_storage)
{
LV_UNUSED(value);
LV_UNUSED(value_storage);
*prop_storage = prop; /* meta is OR-ed into the prop ID already */
}
static void lv_style_set_prop_internal(lv_style_t * style, lv_style_prop_t prop_and_meta, lv_style_value_t value,
void (*value_adjustment_helper)(lv_style_prop_t, lv_style_value_t, uint16_t *, lv_style_value_t *))
{
LV_ASSERT_STYLE(style);
if(style->prop1 == LV_STYLE_PROP_ANY) {
LV_LOG_ERROR("Cannot set property of constant style");
return;
}
lv_style_prop_t prop_id = LV_STYLE_PROP_ID_MASK(prop_and_meta);
if(style->prop_cnt > 1) {
uint8_t * tmp = style->v_p.values_and_props + style->prop_cnt * sizeof(lv_style_value_t);
uint16_t * props = (uint16_t *)tmp;
int32_t i;
for(i = style->prop_cnt - 1; i >= 0; i--) {
if(LV_STYLE_PROP_ID_MASK(props[i]) == prop_id) {
lv_style_value_t * values = (lv_style_value_t *)style->v_p.values_and_props;
value_adjustment_helper(prop_and_meta, value, &props[i], &values[i]);
return;
}
}
size_t size = (style->prop_cnt + 1) * (sizeof(lv_style_value_t) + sizeof(uint16_t));
uint8_t * values_and_props = lv_mem_realloc(style->v_p.values_and_props, size);
if(values_and_props == NULL) return;
style->v_p.values_and_props = values_and_props;
tmp = values_and_props + style->prop_cnt * sizeof(lv_style_value_t);
props = (uint16_t *)tmp;
/*Shift all props to make place for the value before them*/
for(i = style->prop_cnt - 1; i >= 0; i--) {
props[i + sizeof(lv_style_value_t) / sizeof(uint16_t)] = props[i];
}
style->prop_cnt++;
/*Go to the new position wit the props*/
tmp = values_and_props + style->prop_cnt * sizeof(lv_style_value_t);
props = (uint16_t *)tmp;
lv_style_value_t * values = (lv_style_value_t *)values_and_props;
/*Set the new property and value*/
value_adjustment_helper(prop_and_meta, value, &props[style->prop_cnt - 1], &values[style->prop_cnt - 1]);
}
else if(style->prop_cnt == 1) {
if(LV_STYLE_PROP_ID_MASK(style->prop1) == prop_id) {
value_adjustment_helper(prop_and_meta, value, &style->prop1, &style->v_p.value1);
return;
}
size_t size = (style->prop_cnt + 1) * (sizeof(lv_style_value_t) + sizeof(uint16_t));
uint8_t * values_and_props = lv_mem_alloc(size);
if(values_and_props == NULL) return;
lv_style_value_t value_tmp = style->v_p.value1;
style->v_p.values_and_props = values_and_props;
style->prop_cnt++;
uint8_t * tmp = values_and_props + style->prop_cnt * sizeof(lv_style_value_t);
uint16_t * props = (uint16_t *)tmp;
lv_style_value_t * values = (lv_style_value_t *)values_and_props;
props[0] = style->prop1;
values[0] = value_tmp;
value_adjustment_helper(prop_and_meta, value, &props[1], &values[1]);
}
else {
style->prop_cnt = 1;
value_adjustment_helper(prop_and_meta, value, &style->prop1, &style->v_p.value1);
}
uint8_t group = _lv_style_get_prop_group(prop_id);
style->has_group |= 1 << group;
}

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/**
* @file lv_style.h
*
*/
#ifndef LV_STYLE_H
#define LV_STYLE_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include <stdbool.h>
#include <stdint.h>
#include "../font/lv_font.h"
#include "lv_color.h"
#include "lv_area.h"
#include "lv_anim.h"
#include "lv_txt.h"
#include "lv_types.h"
#include "lv_assert.h"
#include "lv_bidi.h"
/*********************
* DEFINES
*********************/
#define LV_STYLE_SENTINEL_VALUE 0xAABBCCDD
/**
* Flags for style behavior
*
* The rest of the flags will have _FLAG added to their name in v9.
*/
#define LV_STYLE_PROP_FLAG_NONE (0)
#define LV_STYLE_PROP_INHERIT (1 << 0) /*Inherited*/
#define LV_STYLE_PROP_EXT_DRAW (1 << 1) /*Requires ext. draw size update when changed*/
#define LV_STYLE_PROP_LAYOUT_REFR (1 << 2) /*Requires layout update when changed*/
#define LV_STYLE_PROP_PARENT_LAYOUT_REFR (1 << 3) /*Requires layout update on parent when changed*/
#define LV_STYLE_PROP_LAYER_REFR (1 << 4) /*Affects layer handling*/
#define LV_STYLE_PROP_ALL (0x1F) /*Indicating all flags*/
/**
* Other constants
*/
#define LV_IMG_ZOOM_NONE 256 /*Value for not zooming the image*/
LV_EXPORT_CONST_INT(LV_IMG_ZOOM_NONE);
// *INDENT-OFF*
#if LV_USE_ASSERT_STYLE
#define LV_STYLE_CONST_INIT(var_name, prop_array) \
const lv_style_t var_name = { \
.sentinel = LV_STYLE_SENTINEL_VALUE, \
.v_p = { .const_props = prop_array }, \
.has_group = 0xFF, \
.prop1 = LV_STYLE_PROP_ANY, \
.prop_cnt = (sizeof(prop_array) / sizeof((prop_array)[0])), \
}
#else
#define LV_STYLE_CONST_INIT(var_name, prop_array) \
const lv_style_t var_name = { \
.v_p = { .const_props = prop_array }, \
.has_group = 0xFF, \
.prop1 = LV_STYLE_PROP_ANY, \
.prop_cnt = (sizeof(prop_array) / sizeof((prop_array)[0])), \
}
#endif
// *INDENT-ON*
#define LV_STYLE_PROP_META_INHERIT 0x8000
#define LV_STYLE_PROP_META_INITIAL 0x4000
#define LV_STYLE_PROP_META_MASK (LV_STYLE_PROP_META_INHERIT | LV_STYLE_PROP_META_INITIAL)
#define LV_STYLE_PROP_ID_MASK(prop) ((lv_style_prop_t)((prop) & ~LV_STYLE_PROP_META_MASK))
/**********************
* TYPEDEFS
**********************/
/**
* Possible options how to blend opaque drawings
*/
enum {
LV_BLEND_MODE_NORMAL, /**< Simply mix according to the opacity value*/
LV_BLEND_MODE_ADDITIVE, /**< Add the respective color channels*/
LV_BLEND_MODE_SUBTRACTIVE,/**< Subtract the foreground from the background*/
LV_BLEND_MODE_MULTIPLY, /**< Multiply the foreground and background*/
LV_BLEND_MODE_REPLACE, /**< Replace background with foreground in the area*/
};
typedef uint8_t lv_blend_mode_t;
/**
* Some options to apply decorations on texts.
* 'OR'ed values can be used.
*/
enum {
LV_TEXT_DECOR_NONE = 0x00,
LV_TEXT_DECOR_UNDERLINE = 0x01,
LV_TEXT_DECOR_STRIKETHROUGH = 0x02,
};
typedef uint8_t lv_text_decor_t;
/**
* Selects on which sides border should be drawn
* 'OR'ed values can be used.
*/
enum {
LV_BORDER_SIDE_NONE = 0x00,
LV_BORDER_SIDE_BOTTOM = 0x01,
LV_BORDER_SIDE_TOP = 0x02,
LV_BORDER_SIDE_LEFT = 0x04,
LV_BORDER_SIDE_RIGHT = 0x08,
LV_BORDER_SIDE_FULL = 0x0F,
LV_BORDER_SIDE_INTERNAL = 0x10, /**< FOR matrix-like objects (e.g. Button matrix)*/
};
typedef uint8_t lv_border_side_t;
/**
* The direction of the gradient.
*/
enum {
LV_GRAD_DIR_NONE, /**< No gradient (the `grad_color` property is ignored)*/
LV_GRAD_DIR_VER, /**< Vertical (top to bottom) gradient*/
LV_GRAD_DIR_HOR, /**< Horizontal (left to right) gradient*/
};
typedef uint8_t lv_grad_dir_t;
/**
* The dithering algorithm for the gradient
* Depends on LV_DITHER_GRADIENT
*/
enum {
LV_DITHER_NONE, /**< No dithering, colors are just quantized to the output resolution*/
LV_DITHER_ORDERED, /**< Ordered dithering. Faster to compute and use less memory but lower quality*/
LV_DITHER_ERR_DIFF, /**< Error diffusion mode. Slower to compute and use more memory but give highest dither quality*/
};
typedef uint8_t lv_dither_mode_t;
/** A gradient stop definition.
* This matches a color and a position in a virtual 0-255 scale.
*/
typedef struct {
lv_color_t color; /**< The stop color */
uint8_t frac; /**< The stop position in 1/255 unit */
} lv_gradient_stop_t;
/** A descriptor of a gradient. */
typedef struct {
lv_gradient_stop_t stops[LV_GRADIENT_MAX_STOPS]; /**< A gradient stop array */
uint8_t stops_count; /**< The number of used stops in the array */
lv_grad_dir_t dir : 3; /**< The gradient direction.
* Any of LV_GRAD_DIR_HOR, LV_GRAD_DIR_VER, LV_GRAD_DIR_NONE */
lv_dither_mode_t dither : 3; /**< Whether to dither the gradient or not.
* Any of LV_DITHER_NONE, LV_DITHER_ORDERED, LV_DITHER_ERR_DIFF */
} lv_grad_dsc_t;
/**
* A common type to handle all the property types in the same way.
*/
typedef union {
int32_t num; /**< Number integer number (opacity, enums, booleans or "normal" numbers)*/
const void * ptr; /**< Constant pointers (font, cone text, etc)*/
lv_color_t color; /**< Colors*/
} lv_style_value_t;
/**
* Enumeration of all built in style properties
*
* Props are split into groups of 16. When adding a new prop to a group, ensure it does not overflow into the next one.
*/
typedef enum {
LV_STYLE_PROP_INV = 0,
/*Group 0*/
LV_STYLE_WIDTH = 1,
LV_STYLE_MIN_WIDTH = 2,
LV_STYLE_MAX_WIDTH = 3,
LV_STYLE_HEIGHT = 4,
LV_STYLE_MIN_HEIGHT = 5,
LV_STYLE_MAX_HEIGHT = 6,
LV_STYLE_X = 7,
LV_STYLE_Y = 8,
LV_STYLE_ALIGN = 9,
LV_STYLE_LAYOUT = 10,
LV_STYLE_RADIUS = 11,
/*Group 1*/
LV_STYLE_PAD_TOP = 16,
LV_STYLE_PAD_BOTTOM = 17,
LV_STYLE_PAD_LEFT = 18,
LV_STYLE_PAD_RIGHT = 19,
LV_STYLE_PAD_ROW = 20,
LV_STYLE_PAD_COLUMN = 21,
LV_STYLE_BASE_DIR = 22,
LV_STYLE_CLIP_CORNER = 23,
/*Group 2*/
LV_STYLE_BG_COLOR = 32,
LV_STYLE_BG_OPA = 33,
LV_STYLE_BG_GRAD_COLOR = 34,
LV_STYLE_BG_GRAD_DIR = 35,
LV_STYLE_BG_MAIN_STOP = 36,
LV_STYLE_BG_GRAD_STOP = 37,
LV_STYLE_BG_GRAD = 38,
LV_STYLE_BG_DITHER_MODE = 39,
LV_STYLE_BG_IMG_SRC = 40,
LV_STYLE_BG_IMG_OPA = 41,
LV_STYLE_BG_IMG_RECOLOR = 42,
LV_STYLE_BG_IMG_RECOLOR_OPA = 43,
LV_STYLE_BG_IMG_TILED = 44,
/*Group 3*/
LV_STYLE_BORDER_COLOR = 48,
LV_STYLE_BORDER_OPA = 49,
LV_STYLE_BORDER_WIDTH = 50,
LV_STYLE_BORDER_SIDE = 51,
LV_STYLE_BORDER_POST = 52,
LV_STYLE_OUTLINE_WIDTH = 53,
LV_STYLE_OUTLINE_COLOR = 54,
LV_STYLE_OUTLINE_OPA = 55,
LV_STYLE_OUTLINE_PAD = 56,
/*Group 4*/
LV_STYLE_SHADOW_WIDTH = 64,
LV_STYLE_SHADOW_OFS_X = 65,
LV_STYLE_SHADOW_OFS_Y = 66,
LV_STYLE_SHADOW_SPREAD = 67,
LV_STYLE_SHADOW_COLOR = 68,
LV_STYLE_SHADOW_OPA = 69,
LV_STYLE_IMG_OPA = 70,
LV_STYLE_IMG_RECOLOR = 71,
LV_STYLE_IMG_RECOLOR_OPA = 72,
LV_STYLE_LINE_WIDTH = 73,
LV_STYLE_LINE_DASH_WIDTH = 74,
LV_STYLE_LINE_DASH_GAP = 75,
LV_STYLE_LINE_ROUNDED = 76,
LV_STYLE_LINE_COLOR = 77,
LV_STYLE_LINE_OPA = 78,
/*Group 5*/
LV_STYLE_ARC_WIDTH = 80,
LV_STYLE_ARC_ROUNDED = 81,
LV_STYLE_ARC_COLOR = 82,
LV_STYLE_ARC_OPA = 83,
LV_STYLE_ARC_IMG_SRC = 84,
LV_STYLE_TEXT_COLOR = 85,
LV_STYLE_TEXT_OPA = 86,
LV_STYLE_TEXT_FONT = 87,
LV_STYLE_TEXT_LETTER_SPACE = 88,
LV_STYLE_TEXT_LINE_SPACE = 89,
LV_STYLE_TEXT_DECOR = 90,
LV_STYLE_TEXT_ALIGN = 91,
/*Group 6*/
LV_STYLE_OPA = 96,
LV_STYLE_COLOR_FILTER_DSC = 97,
LV_STYLE_COLOR_FILTER_OPA = 98,
LV_STYLE_ANIM = 99,
LV_STYLE_ANIM_TIME = 100,
LV_STYLE_ANIM_SPEED = 101,
LV_STYLE_TRANSITION = 102,
LV_STYLE_BLEND_MODE = 103,
LV_STYLE_TRANSFORM_WIDTH = 104,
LV_STYLE_TRANSFORM_HEIGHT = 105,
LV_STYLE_TRANSLATE_X = 106,
LV_STYLE_TRANSLATE_Y = 107,
LV_STYLE_TRANSFORM_ZOOM = 108,
LV_STYLE_TRANSFORM_ANGLE = 109,
LV_STYLE_TRANSFORM_PIVOT_X = 110,
LV_STYLE_TRANSFORM_PIVOT_Y = 111,
_LV_STYLE_LAST_BUILT_IN_PROP = 111,
_LV_STYLE_NUM_BUILT_IN_PROPS = _LV_STYLE_LAST_BUILT_IN_PROP + 1,
LV_STYLE_PROP_ANY = 0xFFFF,
_LV_STYLE_PROP_CONST = 0xFFFF /* magic value for const styles */
} lv_style_prop_t;
enum {
LV_STYLE_RES_NOT_FOUND,
LV_STYLE_RES_FOUND,
LV_STYLE_RES_INHERIT
};
typedef uint8_t lv_style_res_t;
/**
* Descriptor for style transitions
*/
typedef struct {
const lv_style_prop_t * props; /**< An array with the properties to animate.*/
#if LV_USE_USER_DATA
void * user_data; /**< A custom user data that will be passed to the animation's user_data */
#endif
lv_anim_path_cb_t path_xcb; /**< A path for the animation.*/
uint32_t time; /**< Duration of the transition in [ms]*/
uint32_t delay; /**< Delay before the transition in [ms]*/
} lv_style_transition_dsc_t;
/**
* Descriptor of a constant style property.
*/
typedef struct {
lv_style_prop_t prop;
lv_style_value_t value;
} lv_style_const_prop_t;
/**
* Descriptor of a style (a collection of properties and values).
*/
typedef struct {
#if LV_USE_ASSERT_STYLE
uint32_t sentinel;
#endif
/*If there is only one property store it directly.
*For more properties allocate an array*/
union {
lv_style_value_t value1;
uint8_t * values_and_props;
const lv_style_const_prop_t * const_props;
} v_p;
uint16_t prop1;
uint8_t has_group;
uint8_t prop_cnt;
} lv_style_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Initialize a style
* @param style pointer to a style to initialize
* @note Do not call `lv_style_init` on styles that already have some properties
* because this function won't free the used memory, just sets a default state for the style.
* In other words be sure to initialize styles only once!
*/
void lv_style_init(lv_style_t * style);
/**
* Clear all properties from a style and free all allocated memories.
* @param style pointer to a style
*/
void lv_style_reset(lv_style_t * style);
/**
* Register a new style property for custom usage
* @return a new property ID, or LV_STYLE_PROP_INV if there are no more available.
* @example
* lv_style_prop_t MY_PROP;
* static inline void lv_style_set_my_prop(lv_style_t * style, lv_color_t value) {
* lv_style_value_t v = {.color = value}; lv_style_set_prop(style, MY_PROP, v); }
*
* ...
* MY_PROP = lv_style_register_prop();
* ...
* lv_style_set_my_prop(&style1, lv_palette_main(LV_PALETTE_RED));
*/
lv_style_prop_t lv_style_register_prop(uint8_t flag);
/**
* Get the number of custom properties that have been registered thus far.
*/
lv_style_prop_t lv_style_get_num_custom_props(void);
/**
* Remove a property from a style
* @param style pointer to a style
* @param prop a style property ORed with a state.
* @return true: the property was found and removed; false: the property wasn't found
*/
bool lv_style_remove_prop(lv_style_t * style, lv_style_prop_t prop);
/**
* Set the value of property in a style.
* This function shouldn't be used directly by the user.
* Instead use `lv_style_set_<prop_name>()`. E.g. `lv_style_set_bg_color()`
* @param style pointer to style
* @param prop the ID of a property (e.g. `LV_STYLE_BG_COLOR`)
* @param value `lv_style_value_t` variable in which a field is set according to the type of `prop`
*/
void lv_style_set_prop(lv_style_t * style, lv_style_prop_t prop, lv_style_value_t value);
/**
* Set a special meta state for a property in a style.
* This function shouldn't be used directly by the user.
* @param style pointer to style
* @param prop the ID of a property (e.g. `LV_STYLE_BG_COLOR`)
* @param meta the meta value to attach to the property in the style
*/
void lv_style_set_prop_meta(lv_style_t * style, lv_style_prop_t prop, uint16_t meta);
/**
* Get the value of a property
* @param style pointer to a style
* @param prop the ID of a property
* @param value pointer to a `lv_style_value_t` variable to store the value
* @return LV_RES_INV: the property wasn't found in the style (`value` is unchanged)
* LV_RES_OK: the property was fond, and `value` is set accordingly
* @note For performance reasons there are no sanity check on `style`
*/
lv_style_res_t lv_style_get_prop(const lv_style_t * style, lv_style_prop_t prop, lv_style_value_t * value);
/**
* Initialize a transition descriptor.
* @param tr pointer to a transition descriptor to initialize
* @param props an array with the properties to transition. The last element must be zero.
* @param path_cb an animation path (ease) callback. If `NULL` liner path will be used.
* @param time duration of the transition in [ms]
* @param delay delay before the transition in [ms]
* @param user_data any custom data that will be saved in the transition animation and will be available when `path_cb` is called
* @example
* const static lv_style_prop_t trans_props[] = { LV_STYLE_BG_OPA, LV_STYLE_BG_COLOR, 0 };
* static lv_style_transition_dsc_t trans1;
* lv_style_transition_dsc_init(&trans1, trans_props, NULL, 300, 0, NULL);
*/
void lv_style_transition_dsc_init(lv_style_transition_dsc_t * tr, const lv_style_prop_t props[],
lv_anim_path_cb_t path_cb, uint32_t time, uint32_t delay, void * user_data);
/**
* Get the default value of a property
* @param prop the ID of a property
* @return the default value
*/
lv_style_value_t lv_style_prop_get_default(lv_style_prop_t prop);
/**
* Get the value of a property
* @param style pointer to a style
* @param prop the ID of a property
* @param value pointer to a `lv_style_value_t` variable to store the value
* @return LV_RES_INV: the property wasn't found in the style (`value` is unchanged)
* LV_RES_OK: the property was fond, and `value` is set accordingly
* @note For performance reasons there are no sanity check on `style`
* @note This function is the same as ::lv_style_get_prop but inlined. Use it only on performance critical places
*/
static inline lv_style_res_t lv_style_get_prop_inlined(const lv_style_t * style, lv_style_prop_t prop,
lv_style_value_t * value)
{
if(style->prop1 == LV_STYLE_PROP_ANY) {
const lv_style_const_prop_t * const_prop;
uint32_t i;
for(i = 0; i < style->prop_cnt; i++) {
const_prop = style->v_p.const_props + i;
lv_style_prop_t prop_id = LV_STYLE_PROP_ID_MASK(const_prop->prop);
if(prop_id == prop) {
if(const_prop->prop & LV_STYLE_PROP_META_INHERIT)
return LV_STYLE_RES_INHERIT;
*value = (const_prop->prop & LV_STYLE_PROP_META_INITIAL) ? lv_style_prop_get_default(prop_id) : const_prop->value;
return LV_STYLE_RES_FOUND;
}
}
return LV_STYLE_RES_NOT_FOUND;
}
if(style->prop_cnt == 0) return LV_STYLE_RES_NOT_FOUND;
if(style->prop_cnt > 1) {
uint8_t * tmp = style->v_p.values_and_props + style->prop_cnt * sizeof(lv_style_value_t);
uint16_t * props = (uint16_t *)tmp;
uint32_t i;
for(i = 0; i < style->prop_cnt; i++) {
lv_style_prop_t prop_id = LV_STYLE_PROP_ID_MASK(props[i]);
if(prop_id == prop) {
if(props[i] & LV_STYLE_PROP_META_INHERIT)
return LV_STYLE_RES_INHERIT;
if(props[i] & LV_STYLE_PROP_META_INITIAL)
*value = lv_style_prop_get_default(prop_id);
else {
lv_style_value_t * values = (lv_style_value_t *)style->v_p.values_and_props;
*value = values[i];
}
return LV_STYLE_RES_FOUND;
}
}
}
else if(LV_STYLE_PROP_ID_MASK(style->prop1) == prop) {
if(style->prop1 & LV_STYLE_PROP_META_INHERIT)
return LV_STYLE_RES_INHERIT;
*value = (style->prop1 & LV_STYLE_PROP_META_INITIAL) ? lv_style_prop_get_default(LV_STYLE_PROP_ID_MASK(
style->prop1)) : style->v_p.value1;
return LV_STYLE_RES_FOUND;
}
return LV_STYLE_RES_NOT_FOUND;
}
/**
* Checks if a style is empty (has no properties)
* @param style pointer to a style
* @return true if the style is empty
*/
bool lv_style_is_empty(const lv_style_t * style);
/**
* Tell the group of a property. If the a property from a group is set in a style the (1 << group) bit of style->has_group is set.
* It allows early skipping the style if the property is not exists in the style at all.
* @param prop a style property
* @return the group [0..7] 7 means all the custom properties with index > 112
*/
uint8_t _lv_style_get_prop_group(lv_style_prop_t prop);
/**
* Get the flags of a built-in or custom property.
*
* @param prop a style property
* @return the flags of the property
*/
uint8_t _lv_style_prop_lookup_flags(lv_style_prop_t prop);
#include "lv_style_gen.h"
static inline void lv_style_set_size(lv_style_t * style, lv_coord_t value)
{
lv_style_set_width(style, value);
lv_style_set_height(style, value);
}
static inline void lv_style_set_pad_all(lv_style_t * style, lv_coord_t value)
{
lv_style_set_pad_left(style, value);
lv_style_set_pad_right(style, value);
lv_style_set_pad_top(style, value);
lv_style_set_pad_bottom(style, value);
}
static inline void lv_style_set_pad_hor(lv_style_t * style, lv_coord_t value)
{
lv_style_set_pad_left(style, value);
lv_style_set_pad_right(style, value);
}
static inline void lv_style_set_pad_ver(lv_style_t * style, lv_coord_t value)
{
lv_style_set_pad_top(style, value);
lv_style_set_pad_bottom(style, value);
}
static inline void lv_style_set_pad_gap(lv_style_t * style, lv_coord_t value)
{
lv_style_set_pad_row(style, value);
lv_style_set_pad_column(style, value);
}
/**
* @brief Check if the style property has a specified behavioral flag.
*
* Do not pass multiple flags to this function as backwards-compatibility is not guaranteed
* for that.
*
* @param prop Property ID
* @param flag Flag
* @return true if the flag is set for this property
*/
static inline bool lv_style_prop_has_flag(lv_style_prop_t prop, uint8_t flag)
{
return _lv_style_prop_lookup_flags(prop) & flag;
}
/*************************
* GLOBAL VARIABLES
*************************/
/**********************
* MACROS
**********************/
#if LV_USE_ASSERT_STYLE
# define LV_ASSERT_STYLE(style_p) \
do { \
LV_ASSERT_MSG(style_p != NULL, "The style is NULL"); \
LV_ASSERT_MSG(style_p->sentinel == LV_STYLE_SENTINEL_VALUE, "Style is not initialized or corrupted"); \
} while(0)
#else
# define LV_ASSERT_STYLE(p) do{}while(0)
#endif
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_STYLE_H*/

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#include "lv_style.h"
void lv_style_set_width(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_WIDTH, v);
}
void lv_style_set_min_width(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_MIN_WIDTH, v);
}
void lv_style_set_max_width(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_MAX_WIDTH, v);
}
void lv_style_set_height(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_HEIGHT, v);
}
void lv_style_set_min_height(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_MIN_HEIGHT, v);
}
void lv_style_set_max_height(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_MAX_HEIGHT, v);
}
void lv_style_set_x(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_X, v);
}
void lv_style_set_y(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_Y, v);
}
void lv_style_set_align(lv_style_t * style, lv_align_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_ALIGN, v);
}
void lv_style_set_transform_width(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_TRANSFORM_WIDTH, v);
}
void lv_style_set_transform_height(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_TRANSFORM_HEIGHT, v);
}
void lv_style_set_translate_x(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_TRANSLATE_X, v);
}
void lv_style_set_translate_y(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_TRANSLATE_Y, v);
}
void lv_style_set_transform_zoom(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_TRANSFORM_ZOOM, v);
}
void lv_style_set_transform_angle(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_TRANSFORM_ANGLE, v);
}
void lv_style_set_transform_pivot_x(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_TRANSFORM_PIVOT_X, v);
}
void lv_style_set_transform_pivot_y(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_TRANSFORM_PIVOT_Y, v);
}
void lv_style_set_pad_top(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_PAD_TOP, v);
}
void lv_style_set_pad_bottom(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_PAD_BOTTOM, v);
}
void lv_style_set_pad_left(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_PAD_LEFT, v);
}
void lv_style_set_pad_right(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_PAD_RIGHT, v);
}
void lv_style_set_pad_row(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_PAD_ROW, v);
}
void lv_style_set_pad_column(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_PAD_COLUMN, v);
}
void lv_style_set_bg_color(lv_style_t * style, lv_color_t value)
{
lv_style_value_t v = {
.color = value
};
lv_style_set_prop(style, LV_STYLE_BG_COLOR, v);
}
void lv_style_set_bg_opa(lv_style_t * style, lv_opa_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BG_OPA, v);
}
void lv_style_set_bg_grad_color(lv_style_t * style, lv_color_t value)
{
lv_style_value_t v = {
.color = value
};
lv_style_set_prop(style, LV_STYLE_BG_GRAD_COLOR, v);
}
void lv_style_set_bg_grad_dir(lv_style_t * style, lv_grad_dir_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BG_GRAD_DIR, v);
}
void lv_style_set_bg_main_stop(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BG_MAIN_STOP, v);
}
void lv_style_set_bg_grad_stop(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BG_GRAD_STOP, v);
}
void lv_style_set_bg_grad(lv_style_t * style, const lv_grad_dsc_t * value)
{
lv_style_value_t v = {
.ptr = value
};
lv_style_set_prop(style, LV_STYLE_BG_GRAD, v);
}
void lv_style_set_bg_dither_mode(lv_style_t * style, lv_dither_mode_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BG_DITHER_MODE, v);
}
void lv_style_set_bg_img_src(lv_style_t * style, const void * value)
{
lv_style_value_t v = {
.ptr = value
};
lv_style_set_prop(style, LV_STYLE_BG_IMG_SRC, v);
}
void lv_style_set_bg_img_opa(lv_style_t * style, lv_opa_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BG_IMG_OPA, v);
}
void lv_style_set_bg_img_recolor(lv_style_t * style, lv_color_t value)
{
lv_style_value_t v = {
.color = value
};
lv_style_set_prop(style, LV_STYLE_BG_IMG_RECOLOR, v);
}
void lv_style_set_bg_img_recolor_opa(lv_style_t * style, lv_opa_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BG_IMG_RECOLOR_OPA, v);
}
void lv_style_set_bg_img_tiled(lv_style_t * style, bool value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BG_IMG_TILED, v);
}
void lv_style_set_border_color(lv_style_t * style, lv_color_t value)
{
lv_style_value_t v = {
.color = value
};
lv_style_set_prop(style, LV_STYLE_BORDER_COLOR, v);
}
void lv_style_set_border_opa(lv_style_t * style, lv_opa_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BORDER_OPA, v);
}
void lv_style_set_border_width(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BORDER_WIDTH, v);
}
void lv_style_set_border_side(lv_style_t * style, lv_border_side_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BORDER_SIDE, v);
}
void lv_style_set_border_post(lv_style_t * style, bool value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BORDER_POST, v);
}
void lv_style_set_outline_width(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_OUTLINE_WIDTH, v);
}
void lv_style_set_outline_color(lv_style_t * style, lv_color_t value)
{
lv_style_value_t v = {
.color = value
};
lv_style_set_prop(style, LV_STYLE_OUTLINE_COLOR, v);
}
void lv_style_set_outline_opa(lv_style_t * style, lv_opa_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_OUTLINE_OPA, v);
}
void lv_style_set_outline_pad(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_OUTLINE_PAD, v);
}
void lv_style_set_shadow_width(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_SHADOW_WIDTH, v);
}
void lv_style_set_shadow_ofs_x(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_SHADOW_OFS_X, v);
}
void lv_style_set_shadow_ofs_y(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_SHADOW_OFS_Y, v);
}
void lv_style_set_shadow_spread(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_SHADOW_SPREAD, v);
}
void lv_style_set_shadow_color(lv_style_t * style, lv_color_t value)
{
lv_style_value_t v = {
.color = value
};
lv_style_set_prop(style, LV_STYLE_SHADOW_COLOR, v);
}
void lv_style_set_shadow_opa(lv_style_t * style, lv_opa_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_SHADOW_OPA, v);
}
void lv_style_set_img_opa(lv_style_t * style, lv_opa_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_IMG_OPA, v);
}
void lv_style_set_img_recolor(lv_style_t * style, lv_color_t value)
{
lv_style_value_t v = {
.color = value
};
lv_style_set_prop(style, LV_STYLE_IMG_RECOLOR, v);
}
void lv_style_set_img_recolor_opa(lv_style_t * style, lv_opa_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_IMG_RECOLOR_OPA, v);
}
void lv_style_set_line_width(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_LINE_WIDTH, v);
}
void lv_style_set_line_dash_width(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_LINE_DASH_WIDTH, v);
}
void lv_style_set_line_dash_gap(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_LINE_DASH_GAP, v);
}
void lv_style_set_line_rounded(lv_style_t * style, bool value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_LINE_ROUNDED, v);
}
void lv_style_set_line_color(lv_style_t * style, lv_color_t value)
{
lv_style_value_t v = {
.color = value
};
lv_style_set_prop(style, LV_STYLE_LINE_COLOR, v);
}
void lv_style_set_line_opa(lv_style_t * style, lv_opa_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_LINE_OPA, v);
}
void lv_style_set_arc_width(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_ARC_WIDTH, v);
}
void lv_style_set_arc_rounded(lv_style_t * style, bool value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_ARC_ROUNDED, v);
}
void lv_style_set_arc_color(lv_style_t * style, lv_color_t value)
{
lv_style_value_t v = {
.color = value
};
lv_style_set_prop(style, LV_STYLE_ARC_COLOR, v);
}
void lv_style_set_arc_opa(lv_style_t * style, lv_opa_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_ARC_OPA, v);
}
void lv_style_set_arc_img_src(lv_style_t * style, const void * value)
{
lv_style_value_t v = {
.ptr = value
};
lv_style_set_prop(style, LV_STYLE_ARC_IMG_SRC, v);
}
void lv_style_set_text_color(lv_style_t * style, lv_color_t value)
{
lv_style_value_t v = {
.color = value
};
lv_style_set_prop(style, LV_STYLE_TEXT_COLOR, v);
}
void lv_style_set_text_opa(lv_style_t * style, lv_opa_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_TEXT_OPA, v);
}
void lv_style_set_text_font(lv_style_t * style, const lv_font_t * value)
{
lv_style_value_t v = {
.ptr = value
};
lv_style_set_prop(style, LV_STYLE_TEXT_FONT, v);
}
void lv_style_set_text_letter_space(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_TEXT_LETTER_SPACE, v);
}
void lv_style_set_text_line_space(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_TEXT_LINE_SPACE, v);
}
void lv_style_set_text_decor(lv_style_t * style, lv_text_decor_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_TEXT_DECOR, v);
}
void lv_style_set_text_align(lv_style_t * style, lv_text_align_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_TEXT_ALIGN, v);
}
void lv_style_set_radius(lv_style_t * style, lv_coord_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_RADIUS, v);
}
void lv_style_set_clip_corner(lv_style_t * style, bool value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_CLIP_CORNER, v);
}
void lv_style_set_opa(lv_style_t * style, lv_opa_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_OPA, v);
}
void lv_style_set_color_filter_dsc(lv_style_t * style, const lv_color_filter_dsc_t * value)
{
lv_style_value_t v = {
.ptr = value
};
lv_style_set_prop(style, LV_STYLE_COLOR_FILTER_DSC, v);
}
void lv_style_set_color_filter_opa(lv_style_t * style, lv_opa_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_COLOR_FILTER_OPA, v);
}
void lv_style_set_anim(lv_style_t * style, const lv_anim_t * value)
{
lv_style_value_t v = {
.ptr = value
};
lv_style_set_prop(style, LV_STYLE_ANIM, v);
}
void lv_style_set_anim_time(lv_style_t * style, uint32_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_ANIM_TIME, v);
}
void lv_style_set_anim_speed(lv_style_t * style, uint32_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_ANIM_SPEED, v);
}
void lv_style_set_transition(lv_style_t * style, const lv_style_transition_dsc_t * value)
{
lv_style_value_t v = {
.ptr = value
};
lv_style_set_prop(style, LV_STYLE_TRANSITION, v);
}
void lv_style_set_blend_mode(lv_style_t * style, lv_blend_mode_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BLEND_MODE, v);
}
void lv_style_set_layout(lv_style_t * style, uint16_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_LAYOUT, v);
}
void lv_style_set_base_dir(lv_style_t * style, lv_base_dir_t value)
{
lv_style_value_t v = {
.num = (int32_t)value
};
lv_style_set_prop(style, LV_STYLE_BASE_DIR, v);
}

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void lv_style_set_width(lv_style_t * style, lv_coord_t value);
void lv_style_set_min_width(lv_style_t * style, lv_coord_t value);
void lv_style_set_max_width(lv_style_t * style, lv_coord_t value);
void lv_style_set_height(lv_style_t * style, lv_coord_t value);
void lv_style_set_min_height(lv_style_t * style, lv_coord_t value);
void lv_style_set_max_height(lv_style_t * style, lv_coord_t value);
void lv_style_set_x(lv_style_t * style, lv_coord_t value);
void lv_style_set_y(lv_style_t * style, lv_coord_t value);
void lv_style_set_align(lv_style_t * style, lv_align_t value);
void lv_style_set_transform_width(lv_style_t * style, lv_coord_t value);
void lv_style_set_transform_height(lv_style_t * style, lv_coord_t value);
void lv_style_set_translate_x(lv_style_t * style, lv_coord_t value);
void lv_style_set_translate_y(lv_style_t * style, lv_coord_t value);
void lv_style_set_transform_zoom(lv_style_t * style, lv_coord_t value);
void lv_style_set_transform_angle(lv_style_t * style, lv_coord_t value);
void lv_style_set_transform_pivot_x(lv_style_t * style, lv_coord_t value);
void lv_style_set_transform_pivot_y(lv_style_t * style, lv_coord_t value);
void lv_style_set_pad_top(lv_style_t * style, lv_coord_t value);
void lv_style_set_pad_bottom(lv_style_t * style, lv_coord_t value);
void lv_style_set_pad_left(lv_style_t * style, lv_coord_t value);
void lv_style_set_pad_right(lv_style_t * style, lv_coord_t value);
void lv_style_set_pad_row(lv_style_t * style, lv_coord_t value);
void lv_style_set_pad_column(lv_style_t * style, lv_coord_t value);
void lv_style_set_bg_color(lv_style_t * style, lv_color_t value);
void lv_style_set_bg_opa(lv_style_t * style, lv_opa_t value);
void lv_style_set_bg_grad_color(lv_style_t * style, lv_color_t value);
void lv_style_set_bg_grad_dir(lv_style_t * style, lv_grad_dir_t value);
void lv_style_set_bg_main_stop(lv_style_t * style, lv_coord_t value);
void lv_style_set_bg_grad_stop(lv_style_t * style, lv_coord_t value);
void lv_style_set_bg_grad(lv_style_t * style, const lv_grad_dsc_t * value);
void lv_style_set_bg_dither_mode(lv_style_t * style, lv_dither_mode_t value);
void lv_style_set_bg_img_src(lv_style_t * style, const void * value);
void lv_style_set_bg_img_opa(lv_style_t * style, lv_opa_t value);
void lv_style_set_bg_img_recolor(lv_style_t * style, lv_color_t value);
void lv_style_set_bg_img_recolor_opa(lv_style_t * style, lv_opa_t value);
void lv_style_set_bg_img_tiled(lv_style_t * style, bool value);
void lv_style_set_border_color(lv_style_t * style, lv_color_t value);
void lv_style_set_border_opa(lv_style_t * style, lv_opa_t value);
void lv_style_set_border_width(lv_style_t * style, lv_coord_t value);
void lv_style_set_border_side(lv_style_t * style, lv_border_side_t value);
void lv_style_set_border_post(lv_style_t * style, bool value);
void lv_style_set_outline_width(lv_style_t * style, lv_coord_t value);
void lv_style_set_outline_color(lv_style_t * style, lv_color_t value);
void lv_style_set_outline_opa(lv_style_t * style, lv_opa_t value);
void lv_style_set_outline_pad(lv_style_t * style, lv_coord_t value);
void lv_style_set_shadow_width(lv_style_t * style, lv_coord_t value);
void lv_style_set_shadow_ofs_x(lv_style_t * style, lv_coord_t value);
void lv_style_set_shadow_ofs_y(lv_style_t * style, lv_coord_t value);
void lv_style_set_shadow_spread(lv_style_t * style, lv_coord_t value);
void lv_style_set_shadow_color(lv_style_t * style, lv_color_t value);
void lv_style_set_shadow_opa(lv_style_t * style, lv_opa_t value);
void lv_style_set_img_opa(lv_style_t * style, lv_opa_t value);
void lv_style_set_img_recolor(lv_style_t * style, lv_color_t value);
void lv_style_set_img_recolor_opa(lv_style_t * style, lv_opa_t value);
void lv_style_set_line_width(lv_style_t * style, lv_coord_t value);
void lv_style_set_line_dash_width(lv_style_t * style, lv_coord_t value);
void lv_style_set_line_dash_gap(lv_style_t * style, lv_coord_t value);
void lv_style_set_line_rounded(lv_style_t * style, bool value);
void lv_style_set_line_color(lv_style_t * style, lv_color_t value);
void lv_style_set_line_opa(lv_style_t * style, lv_opa_t value);
void lv_style_set_arc_width(lv_style_t * style, lv_coord_t value);
void lv_style_set_arc_rounded(lv_style_t * style, bool value);
void lv_style_set_arc_color(lv_style_t * style, lv_color_t value);
void lv_style_set_arc_opa(lv_style_t * style, lv_opa_t value);
void lv_style_set_arc_img_src(lv_style_t * style, const void * value);
void lv_style_set_text_color(lv_style_t * style, lv_color_t value);
void lv_style_set_text_opa(lv_style_t * style, lv_opa_t value);
void lv_style_set_text_font(lv_style_t * style, const lv_font_t * value);
void lv_style_set_text_letter_space(lv_style_t * style, lv_coord_t value);
void lv_style_set_text_line_space(lv_style_t * style, lv_coord_t value);
void lv_style_set_text_decor(lv_style_t * style, lv_text_decor_t value);
void lv_style_set_text_align(lv_style_t * style, lv_text_align_t value);
void lv_style_set_radius(lv_style_t * style, lv_coord_t value);
void lv_style_set_clip_corner(lv_style_t * style, bool value);
void lv_style_set_opa(lv_style_t * style, lv_opa_t value);
void lv_style_set_color_filter_dsc(lv_style_t * style, const lv_color_filter_dsc_t * value);
void lv_style_set_color_filter_opa(lv_style_t * style, lv_opa_t value);
void lv_style_set_anim(lv_style_t * style, const lv_anim_t * value);
void lv_style_set_anim_time(lv_style_t * style, uint32_t value);
void lv_style_set_anim_speed(lv_style_t * style, uint32_t value);
void lv_style_set_transition(lv_style_t * style, const lv_style_transition_dsc_t * value);
void lv_style_set_blend_mode(lv_style_t * style, lv_blend_mode_t value);
void lv_style_set_layout(lv_style_t * style, uint16_t value);
void lv_style_set_base_dir(lv_style_t * style, lv_base_dir_t value);
#define LV_STYLE_CONST_WIDTH(val) \
{ \
.prop = LV_STYLE_WIDTH, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_MIN_WIDTH(val) \
{ \
.prop = LV_STYLE_MIN_WIDTH, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_MAX_WIDTH(val) \
{ \
.prop = LV_STYLE_MAX_WIDTH, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_HEIGHT(val) \
{ \
.prop = LV_STYLE_HEIGHT, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_MIN_HEIGHT(val) \
{ \
.prop = LV_STYLE_MIN_HEIGHT, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_MAX_HEIGHT(val) \
{ \
.prop = LV_STYLE_MAX_HEIGHT, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_X(val) \
{ \
.prop = LV_STYLE_X, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_Y(val) \
{ \
.prop = LV_STYLE_Y, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_ALIGN(val) \
{ \
.prop = LV_STYLE_ALIGN, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_TRANSFORM_WIDTH(val) \
{ \
.prop = LV_STYLE_TRANSFORM_WIDTH, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_TRANSFORM_HEIGHT(val) \
{ \
.prop = LV_STYLE_TRANSFORM_HEIGHT, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_TRANSLATE_X(val) \
{ \
.prop = LV_STYLE_TRANSLATE_X, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_TRANSLATE_Y(val) \
{ \
.prop = LV_STYLE_TRANSLATE_Y, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_TRANSFORM_ZOOM(val) \
{ \
.prop = LV_STYLE_TRANSFORM_ZOOM, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_TRANSFORM_ANGLE(val) \
{ \
.prop = LV_STYLE_TRANSFORM_ANGLE, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_TRANSFORM_PIVOT_X(val) \
{ \
.prop = LV_STYLE_TRANSFORM_PIVOT_X, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_TRANSFORM_PIVOT_Y(val) \
{ \
.prop = LV_STYLE_TRANSFORM_PIVOT_Y, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_PAD_TOP(val) \
{ \
.prop = LV_STYLE_PAD_TOP, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_PAD_BOTTOM(val) \
{ \
.prop = LV_STYLE_PAD_BOTTOM, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_PAD_LEFT(val) \
{ \
.prop = LV_STYLE_PAD_LEFT, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_PAD_RIGHT(val) \
{ \
.prop = LV_STYLE_PAD_RIGHT, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_PAD_ROW(val) \
{ \
.prop = LV_STYLE_PAD_ROW, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_PAD_COLUMN(val) \
{ \
.prop = LV_STYLE_PAD_COLUMN, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_BG_COLOR(val) \
{ \
.prop = LV_STYLE_BG_COLOR, .value = { .color = val } \
}
#define LV_STYLE_CONST_BG_OPA(val) \
{ \
.prop = LV_STYLE_BG_OPA, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_BG_GRAD_COLOR(val) \
{ \
.prop = LV_STYLE_BG_GRAD_COLOR, .value = { .color = val } \
}
#define LV_STYLE_CONST_BG_GRAD_DIR(val) \
{ \
.prop = LV_STYLE_BG_GRAD_DIR, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_BG_MAIN_STOP(val) \
{ \
.prop = LV_STYLE_BG_MAIN_STOP, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_BG_GRAD_STOP(val) \
{ \
.prop = LV_STYLE_BG_GRAD_STOP, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_BG_GRAD(val) \
{ \
.prop = LV_STYLE_BG_GRAD, .value = { .ptr = val } \
}
#define LV_STYLE_CONST_BG_DITHER_MODE(val) \
{ \
.prop = LV_STYLE_BG_DITHER_MODE, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_BG_IMG_SRC(val) \
{ \
.prop = LV_STYLE_BG_IMG_SRC, .value = { .ptr = val } \
}
#define LV_STYLE_CONST_BG_IMG_OPA(val) \
{ \
.prop = LV_STYLE_BG_IMG_OPA, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_BG_IMG_RECOLOR(val) \
{ \
.prop = LV_STYLE_BG_IMG_RECOLOR, .value = { .color = val } \
}
#define LV_STYLE_CONST_BG_IMG_RECOLOR_OPA(val) \
{ \
.prop = LV_STYLE_BG_IMG_RECOLOR_OPA, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_BG_IMG_TILED(val) \
{ \
.prop = LV_STYLE_BG_IMG_TILED, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_BORDER_COLOR(val) \
{ \
.prop = LV_STYLE_BORDER_COLOR, .value = { .color = val } \
}
#define LV_STYLE_CONST_BORDER_OPA(val) \
{ \
.prop = LV_STYLE_BORDER_OPA, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_BORDER_WIDTH(val) \
{ \
.prop = LV_STYLE_BORDER_WIDTH, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_BORDER_SIDE(val) \
{ \
.prop = LV_STYLE_BORDER_SIDE, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_BORDER_POST(val) \
{ \
.prop = LV_STYLE_BORDER_POST, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_OUTLINE_WIDTH(val) \
{ \
.prop = LV_STYLE_OUTLINE_WIDTH, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_OUTLINE_COLOR(val) \
{ \
.prop = LV_STYLE_OUTLINE_COLOR, .value = { .color = val } \
}
#define LV_STYLE_CONST_OUTLINE_OPA(val) \
{ \
.prop = LV_STYLE_OUTLINE_OPA, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_OUTLINE_PAD(val) \
{ \
.prop = LV_STYLE_OUTLINE_PAD, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_SHADOW_WIDTH(val) \
{ \
.prop = LV_STYLE_SHADOW_WIDTH, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_SHADOW_OFS_X(val) \
{ \
.prop = LV_STYLE_SHADOW_OFS_X, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_SHADOW_OFS_Y(val) \
{ \
.prop = LV_STYLE_SHADOW_OFS_Y, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_SHADOW_SPREAD(val) \
{ \
.prop = LV_STYLE_SHADOW_SPREAD, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_SHADOW_COLOR(val) \
{ \
.prop = LV_STYLE_SHADOW_COLOR, .value = { .color = val } \
}
#define LV_STYLE_CONST_SHADOW_OPA(val) \
{ \
.prop = LV_STYLE_SHADOW_OPA, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_IMG_OPA(val) \
{ \
.prop = LV_STYLE_IMG_OPA, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_IMG_RECOLOR(val) \
{ \
.prop = LV_STYLE_IMG_RECOLOR, .value = { .color = val } \
}
#define LV_STYLE_CONST_IMG_RECOLOR_OPA(val) \
{ \
.prop = LV_STYLE_IMG_RECOLOR_OPA, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_LINE_WIDTH(val) \
{ \
.prop = LV_STYLE_LINE_WIDTH, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_LINE_DASH_WIDTH(val) \
{ \
.prop = LV_STYLE_LINE_DASH_WIDTH, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_LINE_DASH_GAP(val) \
{ \
.prop = LV_STYLE_LINE_DASH_GAP, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_LINE_ROUNDED(val) \
{ \
.prop = LV_STYLE_LINE_ROUNDED, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_LINE_COLOR(val) \
{ \
.prop = LV_STYLE_LINE_COLOR, .value = { .color = val } \
}
#define LV_STYLE_CONST_LINE_OPA(val) \
{ \
.prop = LV_STYLE_LINE_OPA, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_ARC_WIDTH(val) \
{ \
.prop = LV_STYLE_ARC_WIDTH, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_ARC_ROUNDED(val) \
{ \
.prop = LV_STYLE_ARC_ROUNDED, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_ARC_COLOR(val) \
{ \
.prop = LV_STYLE_ARC_COLOR, .value = { .color = val } \
}
#define LV_STYLE_CONST_ARC_OPA(val) \
{ \
.prop = LV_STYLE_ARC_OPA, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_ARC_IMG_SRC(val) \
{ \
.prop = LV_STYLE_ARC_IMG_SRC, .value = { .ptr = val } \
}
#define LV_STYLE_CONST_TEXT_COLOR(val) \
{ \
.prop = LV_STYLE_TEXT_COLOR, .value = { .color = val } \
}
#define LV_STYLE_CONST_TEXT_OPA(val) \
{ \
.prop = LV_STYLE_TEXT_OPA, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_TEXT_FONT(val) \
{ \
.prop = LV_STYLE_TEXT_FONT, .value = { .ptr = val } \
}
#define LV_STYLE_CONST_TEXT_LETTER_SPACE(val) \
{ \
.prop = LV_STYLE_TEXT_LETTER_SPACE, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_TEXT_LINE_SPACE(val) \
{ \
.prop = LV_STYLE_TEXT_LINE_SPACE, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_TEXT_DECOR(val) \
{ \
.prop = LV_STYLE_TEXT_DECOR, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_TEXT_ALIGN(val) \
{ \
.prop = LV_STYLE_TEXT_ALIGN, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_RADIUS(val) \
{ \
.prop = LV_STYLE_RADIUS, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_CLIP_CORNER(val) \
{ \
.prop = LV_STYLE_CLIP_CORNER, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_OPA(val) \
{ \
.prop = LV_STYLE_OPA, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_COLOR_FILTER_DSC(val) \
{ \
.prop = LV_STYLE_COLOR_FILTER_DSC, .value = { .ptr = val } \
}
#define LV_STYLE_CONST_COLOR_FILTER_OPA(val) \
{ \
.prop = LV_STYLE_COLOR_FILTER_OPA, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_ANIM(val) \
{ \
.prop = LV_STYLE_ANIM, .value = { .ptr = val } \
}
#define LV_STYLE_CONST_ANIM_TIME(val) \
{ \
.prop = LV_STYLE_ANIM_TIME, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_ANIM_SPEED(val) \
{ \
.prop = LV_STYLE_ANIM_SPEED, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_TRANSITION(val) \
{ \
.prop = LV_STYLE_TRANSITION, .value = { .ptr = val } \
}
#define LV_STYLE_CONST_BLEND_MODE(val) \
{ \
.prop = LV_STYLE_BLEND_MODE, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_LAYOUT(val) \
{ \
.prop = LV_STYLE_LAYOUT, .value = { .num = (int32_t)val } \
}
#define LV_STYLE_CONST_BASE_DIR(val) \
{ \
.prop = LV_STYLE_BASE_DIR, .value = { .num = (int32_t)val } \
}

40
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/**
* @file lv_templ.c
*
*/
/*********************
* INCLUDES
*********************/
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/*This typedef exists purely to keep -Wpedantic happy when the file is empty.*/
/*It can be removed.*/
typedef int _keep_pedantic_happy;
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**********************
* STATIC FUNCTIONS
**********************/

37
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/**
* @file lv_templ.h
*
*/
#ifndef LV_TEMPL_H
#define LV_TEMPL_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_TEMPL_H*/

341
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/**
* @file lv_timer.c
*/
/*********************
* INCLUDES
*********************/
#include "lv_timer.h"
#include "../hal/lv_hal_tick.h"
#include "lv_assert.h"
#include "lv_mem.h"
#include "lv_ll.h"
#include "lv_gc.h"
/*********************
* DEFINES
*********************/
#define IDLE_MEAS_PERIOD 500 /*[ms]*/
#define DEF_PERIOD 500
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static bool lv_timer_exec(lv_timer_t * timer);
static uint32_t lv_timer_time_remaining(lv_timer_t * timer);
/**********************
* STATIC VARIABLES
**********************/
static bool lv_timer_run = false;
static uint8_t idle_last = 0;
static bool timer_deleted;
static bool timer_created;
/**********************
* MACROS
**********************/
#if LV_LOG_TRACE_TIMER
#define TIMER_TRACE(...) LV_LOG_TRACE(__VA_ARGS__)
#else
#define TIMER_TRACE(...)
#endif
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Init the lv_timer module
*/
void _lv_timer_core_init(void)
{
_lv_ll_init(&LV_GC_ROOT(_lv_timer_ll), sizeof(lv_timer_t));
/*Initially enable the lv_timer handling*/
lv_timer_enable(true);
}
/**
* Call it periodically to handle lv_timers.
* @return the time after which it must be called again
*/
LV_ATTRIBUTE_TIMER_HANDLER uint32_t lv_timer_handler(void)
{
TIMER_TRACE("begin");
/*Avoid concurrent running of the timer handler*/
static bool already_running = false;
if(already_running) {
TIMER_TRACE("already running, concurrent calls are not allow, returning");
return 1;
}
already_running = true;
if(lv_timer_run == false) {
already_running = false; /*Release mutex*/
return 1;
}
static uint32_t idle_period_start = 0;
static uint32_t busy_time = 0;
uint32_t handler_start = lv_tick_get();
if(handler_start == 0) {
static uint32_t run_cnt = 0;
run_cnt++;
if(run_cnt > 100) {
run_cnt = 0;
LV_LOG_WARN("It seems lv_tick_inc() is not called.");
}
}
/*Run all timer from the list*/
lv_timer_t * next;
do {
timer_deleted = false;
timer_created = false;
LV_GC_ROOT(_lv_timer_act) = _lv_ll_get_head(&LV_GC_ROOT(_lv_timer_ll));
while(LV_GC_ROOT(_lv_timer_act)) {
/*The timer might be deleted if it runs only once ('repeat_count = 1')
*So get next element until the current is surely valid*/
next = _lv_ll_get_next(&LV_GC_ROOT(_lv_timer_ll), LV_GC_ROOT(_lv_timer_act));
if(lv_timer_exec(LV_GC_ROOT(_lv_timer_act))) {
/*If a timer was created or deleted then this or the next item might be corrupted*/
if(timer_created || timer_deleted) {
TIMER_TRACE("Start from the first timer again because a timer was created or deleted");
break;
}
}
LV_GC_ROOT(_lv_timer_act) = next; /*Load the next timer*/
}
} while(LV_GC_ROOT(_lv_timer_act));
uint32_t time_till_next = LV_NO_TIMER_READY;
next = _lv_ll_get_head(&LV_GC_ROOT(_lv_timer_ll));
while(next) {
if(!next->paused) {
uint32_t delay = lv_timer_time_remaining(next);
if(delay < time_till_next)
time_till_next = delay;
}
next = _lv_ll_get_next(&LV_GC_ROOT(_lv_timer_ll), next); /*Find the next timer*/
}
busy_time += lv_tick_elaps(handler_start);
uint32_t idle_period_time = lv_tick_elaps(idle_period_start);
if(idle_period_time >= IDLE_MEAS_PERIOD) {
idle_last = (busy_time * 100) / idle_period_time; /*Calculate the busy percentage*/
idle_last = idle_last > 100 ? 0 : 100 - idle_last; /*But we need idle time*/
busy_time = 0;
idle_period_start = lv_tick_get();
}
already_running = false; /*Release the mutex*/
TIMER_TRACE("finished (%d ms until the next timer call)", time_till_next);
return time_till_next;
}
/**
* Create an "empty" timer. It needs to initialized with at least
* `lv_timer_set_cb` and `lv_timer_set_period`
* @return pointer to the created timer
*/
lv_timer_t * lv_timer_create_basic(void)
{
return lv_timer_create(NULL, DEF_PERIOD, NULL);
}
/**
* Create a new lv_timer
* @param timer_xcb a callback which is the timer itself. It will be called periodically.
* (the 'x' in the argument name indicates that it's not a fully generic function because it not follows
* the `func_name(object, callback, ...)` convention)
* @param period call period in ms unit
* @param user_data custom parameter
* @return pointer to the new timer
*/
lv_timer_t * lv_timer_create(lv_timer_cb_t timer_xcb, uint32_t period, void * user_data)
{
lv_timer_t * new_timer = NULL;
new_timer = _lv_ll_ins_head(&LV_GC_ROOT(_lv_timer_ll));
LV_ASSERT_MALLOC(new_timer);
if(new_timer == NULL) return NULL;
new_timer->period = period;
new_timer->timer_cb = timer_xcb;
new_timer->repeat_count = -1;
new_timer->paused = 0;
new_timer->last_run = lv_tick_get();
new_timer->user_data = user_data;
timer_created = true;
return new_timer;
}
/**
* Set the callback the timer (the function to call periodically)
* @param timer pointer to a timer
* @param timer_cb the function to call periodically
*/
void lv_timer_set_cb(lv_timer_t * timer, lv_timer_cb_t timer_cb)
{
timer->timer_cb = timer_cb;
}
/**
* Delete a lv_timer
* @param timer pointer to timer created by timer
*/
void lv_timer_del(lv_timer_t * timer)
{
_lv_ll_remove(&LV_GC_ROOT(_lv_timer_ll), timer);
timer_deleted = true;
lv_mem_free(timer);
}
/**
* Pause/resume a timer.
* @param timer pointer to an lv_timer
*/
void lv_timer_pause(lv_timer_t * timer)
{
timer->paused = true;
}
void lv_timer_resume(lv_timer_t * timer)
{
timer->paused = false;
}
/**
* Set new period for a lv_timer
* @param timer pointer to a lv_timer
* @param period the new period
*/
void lv_timer_set_period(lv_timer_t * timer, uint32_t period)
{
timer->period = period;
}
/**
* Make a lv_timer ready. It will not wait its period.
* @param timer pointer to a lv_timer.
*/
void lv_timer_ready(lv_timer_t * timer)
{
timer->last_run = lv_tick_get() - timer->period - 1;
}
/**
* Set the number of times a timer will repeat.
* @param timer pointer to a lv_timer.
* @param repeat_count -1 : infinity; 0 : stop ; n >0: residual times
*/
void lv_timer_set_repeat_count(lv_timer_t * timer, int32_t repeat_count)
{
timer->repeat_count = repeat_count;
}
/**
* Reset a lv_timer.
* It will be called the previously set period milliseconds later.
* @param timer pointer to a lv_timer.
*/
void lv_timer_reset(lv_timer_t * timer)
{
timer->last_run = lv_tick_get();
}
/**
* Enable or disable the whole lv_timer handling
* @param en true: lv_timer handling is running, false: lv_timer handling is suspended
*/
void lv_timer_enable(bool en)
{
lv_timer_run = en;
}
/**
* Get idle percentage
* @return the lv_timer idle in percentage
*/
uint8_t lv_timer_get_idle(void)
{
return idle_last;
}
/**
* Iterate through the timers
* @param timer NULL to start iteration or the previous return value to get the next timer
* @return the next timer or NULL if there is no more timer
*/
lv_timer_t * lv_timer_get_next(lv_timer_t * timer)
{
if(timer == NULL) return _lv_ll_get_head(&LV_GC_ROOT(_lv_timer_ll));
else return _lv_ll_get_next(&LV_GC_ROOT(_lv_timer_ll), timer);
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Execute timer if its remaining time is zero
* @param timer pointer to lv_timer
* @return true: execute, false: not executed
*/
static bool lv_timer_exec(lv_timer_t * timer)
{
if(timer->paused) return false;
bool exec = false;
if(lv_timer_time_remaining(timer) == 0) {
/* Decrement the repeat count before executing the timer_cb.
* If any timer is deleted `if(timer->repeat_count == 0)` is not executed below
* but at least the repeat count is zero and the timer can be deleted in the next round*/
int32_t original_repeat_count = timer->repeat_count;
if(timer->repeat_count > 0) timer->repeat_count--;
timer->last_run = lv_tick_get();
TIMER_TRACE("calling timer callback: %p", *((void **)&timer->timer_cb));
if(timer->timer_cb && original_repeat_count != 0) timer->timer_cb(timer);
TIMER_TRACE("timer callback %p finished", *((void **)&timer->timer_cb));
LV_ASSERT_MEM_INTEGRITY();
exec = true;
}
if(timer_deleted == false) { /*The timer might be deleted by itself as well*/
if(timer->repeat_count == 0) { /*The repeat count is over, delete the timer*/
TIMER_TRACE("deleting timer with %p callback because the repeat count is over", *((void **)&timer->timer_cb));
lv_timer_del(timer);
}
}
return exec;
}
/**
* Find out how much time remains before a timer must be run.
* @param timer pointer to lv_timer
* @return the time remaining, or 0 if it needs to be run again
*/
static uint32_t lv_timer_time_remaining(lv_timer_t * timer)
{
/*Check if at least 'period' time elapsed*/
uint32_t elp = lv_tick_elaps(timer->last_run);
if(elp >= timer->period)
return 0;
return timer->period - elp;
}

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/**
* @file lv_timer.h
*/
#ifndef LV_TIMER_H
#define LV_TIMER_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include "../hal/lv_hal_tick.h"
#include <stdint.h>
#include <stdbool.h>
/*********************
* DEFINES
*********************/
#ifndef LV_ATTRIBUTE_TIMER_HANDLER
#define LV_ATTRIBUTE_TIMER_HANDLER
#endif
#define LV_NO_TIMER_READY 0xFFFFFFFF
/**********************
* TYPEDEFS
**********************/
struct _lv_timer_t;
/**
* Timers execute this type of functions.
*/
typedef void (*lv_timer_cb_t)(struct _lv_timer_t *);
/**
* Descriptor of a lv_timer
*/
typedef struct _lv_timer_t {
uint32_t period; /**< How often the timer should run*/
uint32_t last_run; /**< Last time the timer ran*/
lv_timer_cb_t timer_cb; /**< Timer function*/
void * user_data; /**< Custom user data*/
int32_t repeat_count; /**< 1: One time; -1 : infinity; n>0: residual times*/
uint32_t paused : 1;
} lv_timer_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Init the lv_timer module
*/
void _lv_timer_core_init(void);
//! @cond Doxygen_Suppress
/**
* Call it periodically to handle lv_timers.
* @return time till it needs to be run next (in ms)
*/
LV_ATTRIBUTE_TIMER_HANDLER uint32_t lv_timer_handler(void);
//! @endcond
/**
* Call it in the super-loop of main() or threads. It will run lv_timer_handler()
* with a given period in ms. You can use it with sleep or delay in OS environment.
* This function is used to simplify the porting.
* @param __ms the period for running lv_timer_handler()
*/
static inline LV_ATTRIBUTE_TIMER_HANDLER uint32_t lv_timer_handler_run_in_period(uint32_t ms)
{
static uint32_t last_tick = 0;
uint32_t curr_tick = lv_tick_get();
if((curr_tick - last_tick) >= (ms)) {
last_tick = curr_tick;
return lv_timer_handler();
}
return 1;
}
/**
* Create an "empty" timer. It needs to initialized with at least
* `lv_timer_set_cb` and `lv_timer_set_period`
* @return pointer to the created timer
*/
lv_timer_t * lv_timer_create_basic(void);
/**
* Create a new lv_timer
* @param timer_xcb a callback to call periodically.
* (the 'x' in the argument name indicates that it's not a fully generic function because it not follows
* the `func_name(object, callback, ...)` convention)
* @param period call period in ms unit
* @param user_data custom parameter
* @return pointer to the new timer
*/
lv_timer_t * lv_timer_create(lv_timer_cb_t timer_xcb, uint32_t period, void * user_data);
/**
* Delete a lv_timer
* @param timer pointer to an lv_timer
*/
void lv_timer_del(lv_timer_t * timer);
/**
* Pause/resume a timer.
* @param timer pointer to an lv_timer
*/
void lv_timer_pause(lv_timer_t * timer);
void lv_timer_resume(lv_timer_t * timer);
/**
* Set the callback the timer (the function to call periodically)
* @param timer pointer to a timer
* @param timer_cb the function to call periodically
*/
void lv_timer_set_cb(lv_timer_t * timer, lv_timer_cb_t timer_cb);
/**
* Set new period for a lv_timer
* @param timer pointer to a lv_timer
* @param period the new period
*/
void lv_timer_set_period(lv_timer_t * timer, uint32_t period);
/**
* Make a lv_timer ready. It will not wait its period.
* @param timer pointer to a lv_timer.
*/
void lv_timer_ready(lv_timer_t * timer);
/**
* Set the number of times a timer will repeat.
* @param timer pointer to a lv_timer.
* @param repeat_count -1 : infinity; 0 : stop ; n>0: residual times
*/
void lv_timer_set_repeat_count(lv_timer_t * timer, int32_t repeat_count);
/**
* Reset a lv_timer.
* It will be called the previously set period milliseconds later.
* @param timer pointer to a lv_timer.
*/
void lv_timer_reset(lv_timer_t * timer);
/**
* Enable or disable the whole lv_timer handling
* @param en true: lv_timer handling is running, false: lv_timer handling is suspended
*/
void lv_timer_enable(bool en);
/**
* Get idle percentage
* @return the lv_timer idle in percentage
*/
uint8_t lv_timer_get_idle(void);
/**
* Iterate through the timers
* @param timer NULL to start iteration or the previous return value to get the next timer
* @return the next timer or NULL if there is no more timer
*/
lv_timer_t * lv_timer_get_next(lv_timer_t * timer);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif

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#include "../lv_conf_internal.h"
#if LV_MEM_CUSTOM == 0
#ifndef LV_TLSF_H
#define LV_TLSF_H
/*
** Two Level Segregated Fit memory allocator, version 3.1.
** Written by Matthew Conte
** http://tlsf.baisoku.org
**
** Based on the original documentation by Miguel Masmano:
** http://www.gii.upv.es/tlsf/main/docs
**
** This implementation was written to the specification
** of the document, therefore no GPL restrictions apply.
**
** Copyright (c) 2006-2016, Matthew Conte
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** * Neither the name of the copyright holder nor the
** names of its contributors may be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
** DISCLAIMED. IN NO EVENT SHALL MATTHEW CONTE BE LIABLE FOR ANY
** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stddef.h>
#if defined(__cplusplus)
extern "C" {
#endif
/* lv_tlsf_t: a TLSF structure. Can contain 1 to N pools. */
/* lv_pool_t: a block of memory that TLSF can manage. */
typedef void * lv_tlsf_t;
typedef void * lv_pool_t;
/* Create/destroy a memory pool. */
lv_tlsf_t lv_tlsf_create(void * mem);
lv_tlsf_t lv_tlsf_create_with_pool(void * mem, size_t bytes);
void lv_tlsf_destroy(lv_tlsf_t tlsf);
lv_pool_t lv_tlsf_get_pool(lv_tlsf_t tlsf);
/* Add/remove memory pools. */
lv_pool_t lv_tlsf_add_pool(lv_tlsf_t tlsf, void * mem, size_t bytes);
void lv_tlsf_remove_pool(lv_tlsf_t tlsf, lv_pool_t pool);
/* malloc/memalign/realloc/free replacements. */
void * lv_tlsf_malloc(lv_tlsf_t tlsf, size_t bytes);
void * lv_tlsf_memalign(lv_tlsf_t tlsf, size_t align, size_t bytes);
void * lv_tlsf_realloc(lv_tlsf_t tlsf, void * ptr, size_t size);
size_t lv_tlsf_free(lv_tlsf_t tlsf, const void * ptr);
/* Returns internal block size, not original request size */
size_t lv_tlsf_block_size(void * ptr);
/* Overheads/limits of internal structures. */
size_t lv_tlsf_size(void);
size_t lv_tlsf_align_size(void);
size_t lv_tlsf_block_size_min(void);
size_t lv_tlsf_block_size_max(void);
size_t lv_tlsf_pool_overhead(void);
size_t lv_tlsf_alloc_overhead(void);
/* Debugging. */
typedef void (*lv_tlsf_walker)(void * ptr, size_t size, int used, void * user);
void lv_tlsf_walk_pool(lv_pool_t pool, lv_tlsf_walker walker, void * user);
/* Returns nonzero if any internal consistency check fails. */
int lv_tlsf_check(lv_tlsf_t tlsf);
int lv_tlsf_check_pool(lv_pool_t pool);
#if defined(__cplusplus)
};
#endif
#endif /*LV_TLSF_H*/
#endif /* LV_MEM_CUSTOM == 0 */

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/**
* @file lv_txt.c
*
*/
/*********************
* INCLUDES
*********************/
#include <stdarg.h>
#include "lv_txt.h"
#include "lv_txt_ap.h"
#include "lv_math.h"
#include "lv_log.h"
#include "lv_mem.h"
#include "lv_assert.h"
/*********************
* DEFINES
*********************/
#define NO_BREAK_FOUND UINT32_MAX
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
#if LV_TXT_ENC == LV_TXT_ENC_UTF8
static uint8_t lv_txt_utf8_size(const char * str);
static uint32_t lv_txt_unicode_to_utf8(uint32_t letter_uni);
static uint32_t lv_txt_utf8_conv_wc(uint32_t c);
static uint32_t lv_txt_utf8_next(const char * txt, uint32_t * i);
static uint32_t lv_txt_utf8_prev(const char * txt, uint32_t * i_start);
static uint32_t lv_txt_utf8_get_byte_id(const char * txt, uint32_t utf8_id);
static uint32_t lv_txt_utf8_get_char_id(const char * txt, uint32_t byte_id);
static uint32_t lv_txt_utf8_get_length(const char * txt);
#elif LV_TXT_ENC == LV_TXT_ENC_ASCII
static uint8_t lv_txt_iso8859_1_size(const char * str);
static uint32_t lv_txt_unicode_to_iso8859_1(uint32_t letter_uni);
static uint32_t lv_txt_iso8859_1_conv_wc(uint32_t c);
static uint32_t lv_txt_iso8859_1_next(const char * txt, uint32_t * i);
static uint32_t lv_txt_iso8859_1_prev(const char * txt, uint32_t * i_start);
static uint32_t lv_txt_iso8859_1_get_byte_id(const char * txt, uint32_t utf8_id);
static uint32_t lv_txt_iso8859_1_get_char_id(const char * txt, uint32_t byte_id);
static uint32_t lv_txt_iso8859_1_get_length(const char * txt);
#endif
/**********************
* STATIC VARIABLES
**********************/
/**********************
* GLOBAL VARIABLES
**********************/
#if LV_TXT_ENC == LV_TXT_ENC_UTF8
uint8_t (*_lv_txt_encoded_size)(const char *) = lv_txt_utf8_size;
uint32_t (*_lv_txt_unicode_to_encoded)(uint32_t) = lv_txt_unicode_to_utf8;
uint32_t (*_lv_txt_encoded_conv_wc)(uint32_t) = lv_txt_utf8_conv_wc;
uint32_t (*_lv_txt_encoded_next)(const char *, uint32_t *) = lv_txt_utf8_next;
uint32_t (*_lv_txt_encoded_prev)(const char *, uint32_t *) = lv_txt_utf8_prev;
uint32_t (*_lv_txt_encoded_get_byte_id)(const char *, uint32_t) = lv_txt_utf8_get_byte_id;
uint32_t (*_lv_txt_encoded_get_char_id)(const char *, uint32_t) = lv_txt_utf8_get_char_id;
uint32_t (*_lv_txt_get_encoded_length)(const char *) = lv_txt_utf8_get_length;
#elif LV_TXT_ENC == LV_TXT_ENC_ASCII
uint8_t (*_lv_txt_encoded_size)(const char *) = lv_txt_iso8859_1_size;
uint32_t (*_lv_txt_unicode_to_encoded)(uint32_t) = lv_txt_unicode_to_iso8859_1;
uint32_t (*_lv_txt_encoded_conv_wc)(uint32_t) = lv_txt_iso8859_1_conv_wc;
uint32_t (*_lv_txt_encoded_next)(const char *, uint32_t *) = lv_txt_iso8859_1_next;
uint32_t (*_lv_txt_encoded_prev)(const char *, uint32_t *) = lv_txt_iso8859_1_prev;
uint32_t (*_lv_txt_encoded_get_byte_id)(const char *, uint32_t) = lv_txt_iso8859_1_get_byte_id;
uint32_t (*_lv_txt_encoded_get_char_id)(const char *, uint32_t) = lv_txt_iso8859_1_get_char_id;
uint32_t (*_lv_txt_get_encoded_length)(const char *) = lv_txt_iso8859_1_get_length;
#endif
/**********************
* MACROS
**********************/
#define LV_IS_ASCII(value) ((value & 0x80U) == 0x00U)
#define LV_IS_2BYTES_UTF8_CODE(value) ((value & 0xE0U) == 0xC0U)
#define LV_IS_3BYTES_UTF8_CODE(value) ((value & 0xF0U) == 0xE0U)
#define LV_IS_4BYTES_UTF8_CODE(value) ((value & 0xF8U) == 0xF0U)
#define LV_IS_INVALID_UTF8_CODE(value) ((value & 0xC0U) != 0x80U)
/**********************
* GLOBAL FUNCTIONS
**********************/
void lv_txt_get_size(lv_point_t * size_res, const char * text, const lv_font_t * font, lv_coord_t letter_space,
lv_coord_t line_space, lv_coord_t max_width, lv_text_flag_t flag)
{
size_res->x = 0;
size_res->y = 0;
if(text == NULL) return;
if(font == NULL) return;
if(flag & LV_TEXT_FLAG_EXPAND) max_width = LV_COORD_MAX;
uint32_t line_start = 0;
uint32_t new_line_start = 0;
uint16_t letter_height = lv_font_get_line_height(font);
/*Calc. the height and longest line*/
while(text[line_start] != '\0') {
new_line_start += _lv_txt_get_next_line(&text[line_start], font, letter_space, max_width, NULL, flag);
if((unsigned long)size_res->y + (unsigned long)letter_height + (unsigned long)line_space > LV_MAX_OF(lv_coord_t)) {
LV_LOG_WARN("lv_txt_get_size: integer overflow while calculating text height");
return;
}
else {
size_res->y += letter_height;
size_res->y += line_space;
}
/*Calculate the longest line*/
lv_coord_t act_line_length = lv_txt_get_width(&text[line_start], new_line_start - line_start, font, letter_space,
flag);
size_res->x = LV_MAX(act_line_length, size_res->x);
line_start = new_line_start;
}
/*Make the text one line taller if the last character is '\n' or '\r'*/
if((line_start != 0) && (text[line_start - 1] == '\n' || text[line_start - 1] == '\r')) {
size_res->y += letter_height + line_space;
}
/*Correction with the last line space or set the height manually if the text is empty*/
if(size_res->y == 0)
size_res->y = letter_height;
else
size_res->y -= line_space;
}
/**
* Get the next word of text. A word is delimited by break characters.
*
* If the word cannot fit in the max_width space, obey LV_TXT_LINE_BREAK_LONG_* rules.
*
* If the next word cannot fit anything, return 0.
*
* If the first character is a break character, returns the next index.
*
* Example calls from lv_txt_get_next_line() assuming sufficient max_width and
* txt = "Test text\n"
* 0123456789
*
* Calls would be as follows:
* 1. Return i=4, pointing at breakchar ' ', for the string "Test"
* 2. Return i=5, since i=4 was a breakchar.
* 3. Return i=9, pointing at breakchar '\n'
* 4. Parenting lv_txt_get_next_line() would detect subsequent '\0'
*
* TODO: Returned word_w_ptr may overestimate the returned word's width when
* max_width is reached. In current usage, this has no impact.
*
* @param txt a '\0' terminated string
* @param font pointer to a font
* @param letter_space letter space
* @param max_width max width of the text (break the lines to fit this size). Set COORD_MAX to avoid line breaks
* @param flags settings for the text from 'txt_flag_type' enum
* @param[out] word_w_ptr width (in pixels) of the parsed word. May be NULL.
* @param cmd_state pointer to a txt_cmd_state_t variable which stores the current state of command processing
* @param force Force return the fraction of the word that can fit in the provided space.
* @return the index of the first char of the next word (in byte index not letter index. With UTF-8 they are different)
*/
static uint32_t lv_txt_get_next_word(const char * txt, const lv_font_t * font,
lv_coord_t letter_space, lv_coord_t max_width,
lv_text_flag_t flag, uint32_t * word_w_ptr, lv_text_cmd_state_t * cmd_state, bool force)
{
if(txt == NULL || txt[0] == '\0') return 0;
if(font == NULL) return 0;
if(flag & LV_TEXT_FLAG_EXPAND) max_width = LV_COORD_MAX;
uint32_t i = 0, i_next = 0, i_next_next = 0; /*Iterating index into txt*/
uint32_t letter = 0; /*Letter at i*/
uint32_t letter_next = 0; /*Letter at i_next*/
lv_coord_t letter_w;
lv_coord_t cur_w = 0; /*Pixel Width of transversed string*/
uint32_t word_len = 0; /*Number of characters in the transversed word*/
uint32_t break_index = NO_BREAK_FOUND; /*only used for "long" words*/
uint32_t break_letter_count = 0; /*Number of characters up to the long word break point*/
letter = _lv_txt_encoded_next(txt, &i_next);
i_next_next = i_next;
/*Obtain the full word, regardless if it fits or not in max_width*/
while(txt[i] != '\0') {
letter_next = _lv_txt_encoded_next(txt, &i_next_next);
word_len++;
/*Handle the recolor command*/
if((flag & LV_TEXT_FLAG_RECOLOR) != 0) {
if(_lv_txt_is_cmd(cmd_state, letter) != false) {
i = i_next;
i_next = i_next_next;
letter = letter_next;
continue; /*Skip the letter if it is part of a command*/
}
}
letter_w = lv_font_get_glyph_width(font, letter, letter_next);
cur_w += letter_w;
if(letter_w > 0) {
cur_w += letter_space;
}
/*Test if this character fits within max_width*/
if(break_index == NO_BREAK_FOUND && (cur_w - letter_space) > max_width) {
break_index = i;
break_letter_count = word_len - 1;
/*break_index is now pointing at the character that doesn't fit*/
}
/*Check for new line chars and breakchars*/
if(letter == '\n' || letter == '\r' || _lv_txt_is_break_char(letter)) {
/*Update the output width on the first character if it fits.
*Must do this here in case first letter is a break character.*/
if(i == 0 && break_index == NO_BREAK_FOUND && word_w_ptr != NULL) *word_w_ptr = cur_w;
word_len--;
break;
}
/*Update the output width*/
if(word_w_ptr != NULL && break_index == NO_BREAK_FOUND) *word_w_ptr = cur_w;
i = i_next;
i_next = i_next_next;
letter = letter_next;
}
/*Entire Word fits in the provided space*/
if(break_index == NO_BREAK_FOUND) {
if(word_len == 0 || (letter == '\r' && letter_next == '\n')) i = i_next;
return i;
}
#if LV_TXT_LINE_BREAK_LONG_LEN > 0
/*Word doesn't fit in provided space, but isn't "long"*/
if(word_len < LV_TXT_LINE_BREAK_LONG_LEN) {
if(force) return break_index;
if(word_w_ptr != NULL) *word_w_ptr = 0; /*Return no word*/
return 0;
}
/*Word is "long," but insufficient amounts can fit in provided space*/
if(break_letter_count < LV_TXT_LINE_BREAK_LONG_PRE_MIN_LEN) {
if(force) return break_index;
if(word_w_ptr != NULL) *word_w_ptr = 0;
return 0;
}
/*Word is a "long", but letters may need to be better distributed*/
{
i = break_index;
int32_t n_move = LV_TXT_LINE_BREAK_LONG_POST_MIN_LEN - (word_len - break_letter_count);
/*Move pointer "i" backwards*/
for(; n_move > 0; n_move--) {
_lv_txt_encoded_prev(txt, &i);
// TODO: it would be appropriate to update the returned word width here
// However, in current usage, this doesn't impact anything.
}
}
return i;
#else
if(force) return break_index;
if(word_w_ptr != NULL) *word_w_ptr = 0; /*Return no word*/
(void) break_letter_count;
return 0;
#endif
}
uint32_t _lv_txt_get_next_line(const char * txt, const lv_font_t * font,
lv_coord_t letter_space, lv_coord_t max_width,
lv_coord_t * used_width, lv_text_flag_t flag)
{
if(used_width) *used_width = 0;
if(txt == NULL) return 0;
if(txt[0] == '\0') return 0;
if(font == NULL) return 0;
lv_coord_t line_w = 0;
/*If max_width doesn't mater simply find the new line character
*without thinking about word wrapping*/
if((flag & LV_TEXT_FLAG_EXPAND) || (flag & LV_TEXT_FLAG_FIT)) {
uint32_t i;
for(i = 0; txt[i] != '\n' && txt[i] != '\r' && txt[i] != '\0'; i++) {
/*Just find the new line chars or string ends by incrementing `i`*/
}
if(txt[i] != '\0') i++; /*To go beyond `\n`*/
if(used_width) *used_width = -1;
return i;
}
if(flag & LV_TEXT_FLAG_EXPAND) max_width = LV_COORD_MAX;
lv_text_cmd_state_t cmd_state = LV_TEXT_CMD_STATE_WAIT;
uint32_t i = 0; /*Iterating index into txt*/
while(txt[i] != '\0' && max_width > 0) {
uint32_t word_w = 0;
uint32_t advance = lv_txt_get_next_word(&txt[i], font, letter_space, max_width, flag, &word_w, &cmd_state, i == 0);
max_width -= word_w;
line_w += word_w;
if(advance == 0) {
break;
}
i += advance;
if(txt[0] == '\n' || txt[0] == '\r') break;
if(txt[i] == '\n' || txt[i] == '\r') {
i++; /*Include the following newline in the current line*/
break;
}
}
/*Always step at least one to avoid infinite loops*/
if(i == 0) {
uint32_t letter = _lv_txt_encoded_next(txt, &i);
if(used_width != NULL) {
line_w = lv_font_get_glyph_width(font, letter, '\0');
}
}
if(used_width != NULL) {
*used_width = line_w;
}
return i;
}
lv_coord_t lv_txt_get_width(const char * txt, uint32_t length, const lv_font_t * font, lv_coord_t letter_space,
lv_text_flag_t flag)
{
if(txt == NULL) return 0;
if(font == NULL) return 0;
if(txt[0] == '\0') return 0;
uint32_t i = 0;
lv_coord_t width = 0;
lv_text_cmd_state_t cmd_state = LV_TEXT_CMD_STATE_WAIT;
if(length != 0) {
while(i < length) {
uint32_t letter;
uint32_t letter_next;
_lv_txt_encoded_letter_next_2(txt, &letter, &letter_next, &i);
if((flag & LV_TEXT_FLAG_RECOLOR) != 0) {
if(_lv_txt_is_cmd(&cmd_state, letter) != false) {
continue;
}
}
lv_coord_t char_width = lv_font_get_glyph_width(font, letter, letter_next);
if(char_width > 0) {
width += char_width;
width += letter_space;
}
}
if(width > 0) {
width -= letter_space; /*Trim the last letter space. Important if the text is center
aligned*/
}
}
return width;
}
bool _lv_txt_is_cmd(lv_text_cmd_state_t * state, uint32_t c)
{
bool ret = false;
if(c == (uint32_t)LV_TXT_COLOR_CMD[0]) {
if(*state == LV_TEXT_CMD_STATE_WAIT) { /*Start char*/
*state = LV_TEXT_CMD_STATE_PAR;
ret = true;
}
/*Other start char in parameter is escaped cmd. char*/
else if(*state == LV_TEXT_CMD_STATE_PAR) {
*state = LV_TEXT_CMD_STATE_WAIT;
}
/*Command end*/
else if(*state == LV_TEXT_CMD_STATE_IN) {
*state = LV_TEXT_CMD_STATE_WAIT;
ret = true;
}
}
/*Skip the color parameter and wait the space after it*/
if(*state == LV_TEXT_CMD_STATE_PAR) {
if(c == ' ') {
*state = LV_TEXT_CMD_STATE_IN; /*After the parameter the text is in the command*/
}
ret = true;
}
return ret;
}
void _lv_txt_ins(char * txt_buf, uint32_t pos, const char * ins_txt)
{
if(txt_buf == NULL || ins_txt == NULL) return;
size_t old_len = strlen(txt_buf);
size_t ins_len = strlen(ins_txt);
if(ins_len == 0) return;
size_t new_len = ins_len + old_len;
pos = _lv_txt_encoded_get_byte_id(txt_buf, pos); /*Convert to byte index instead of letter index*/
/*Copy the second part into the end to make place to text to insert*/
size_t i;
for(i = new_len; i >= pos + ins_len; i--) {
txt_buf[i] = txt_buf[i - ins_len];
}
/*Copy the text into the new space*/
lv_memcpy_small(txt_buf + pos, ins_txt, ins_len);
}
void _lv_txt_cut(char * txt, uint32_t pos, uint32_t len)
{
if(txt == NULL) return;
size_t old_len = strlen(txt);
pos = _lv_txt_encoded_get_byte_id(txt, pos); /*Convert to byte index instead of letter index*/
len = _lv_txt_encoded_get_byte_id(&txt[pos], len);
/*Copy the second part into the end to make place to text to insert*/
uint32_t i;
for(i = pos; i <= old_len - len; i++) {
txt[i] = txt[i + len];
}
}
char * _lv_txt_set_text_vfmt(const char * fmt, va_list ap)
{
/*Allocate space for the new text by using trick from C99 standard section 7.19.6.12*/
va_list ap_copy;
va_copy(ap_copy, ap);
uint32_t len = lv_vsnprintf(NULL, 0, fmt, ap_copy);
va_end(ap_copy);
char * text = 0;
#if LV_USE_ARABIC_PERSIAN_CHARS
/*Put together the text according to the format string*/
char * raw_txt = lv_mem_buf_get(len + 1);
LV_ASSERT_MALLOC(raw_txt);
if(raw_txt == NULL) {
return NULL;
}
lv_vsnprintf(raw_txt, len + 1, fmt, ap);
/*Get the size of the Arabic text and process it*/
size_t len_ap = _lv_txt_ap_calc_bytes_cnt(raw_txt);
text = lv_mem_alloc(len_ap + 1);
LV_ASSERT_MALLOC(text);
if(text == NULL) {
return NULL;
}
_lv_txt_ap_proc(raw_txt, text);
lv_mem_buf_release(raw_txt);
#else
text = lv_mem_alloc(len + 1);
LV_ASSERT_MALLOC(text);
if(text == NULL) {
return NULL;
}
text[len] = 0; /*Ensure NULL termination*/
lv_vsnprintf(text, len + 1, fmt, ap);
#endif
return text;
}
void _lv_txt_encoded_letter_next_2(const char * txt, uint32_t * letter, uint32_t * letter_next, uint32_t * ofs)
{
*letter = _lv_txt_encoded_next(txt, ofs);
*letter_next = *letter != '\0' ? _lv_txt_encoded_next(&txt[*ofs], NULL) : 0;
}
#if LV_TXT_ENC == LV_TXT_ENC_UTF8
/*******************************
* UTF-8 ENCODER/DECODER
******************************/
/**
* Give the size of an UTF-8 coded character
* @param str pointer to a character in a string
* @return length of the UTF-8 character (1,2,3 or 4), 0 on invalid code.
*/
static uint8_t lv_txt_utf8_size(const char * str)
{
if(LV_IS_ASCII(str[0]))
return 1;
else if(LV_IS_2BYTES_UTF8_CODE(str[0]))
return 2;
else if(LV_IS_3BYTES_UTF8_CODE(str[0]))
return 3;
else if(LV_IS_4BYTES_UTF8_CODE(str[0]))
return 4;
return 0;
}
/**
* Convert a Unicode letter to UTF-8.
* @param letter_uni a Unicode letter
* @return UTF-8 coded character in Little Endian to be compatible with C chars (e.g. 'Á', 'Ű')
*/
static uint32_t lv_txt_unicode_to_utf8(uint32_t letter_uni)
{
if(letter_uni < 128) return letter_uni;
uint8_t bytes[4];
if(letter_uni < 0x0800) {
bytes[0] = ((letter_uni >> 6) & 0x1F) | 0xC0;
bytes[1] = ((letter_uni >> 0) & 0x3F) | 0x80;
bytes[2] = 0;
bytes[3] = 0;
}
else if(letter_uni < 0x010000) {
bytes[0] = ((letter_uni >> 12) & 0x0F) | 0xE0;
bytes[1] = ((letter_uni >> 6) & 0x3F) | 0x80;
bytes[2] = ((letter_uni >> 0) & 0x3F) | 0x80;
bytes[3] = 0;
}
else if(letter_uni < 0x110000) {
bytes[0] = ((letter_uni >> 18) & 0x07) | 0xF0;
bytes[1] = ((letter_uni >> 12) & 0x3F) | 0x80;
bytes[2] = ((letter_uni >> 6) & 0x3F) | 0x80;
bytes[3] = ((letter_uni >> 0) & 0x3F) | 0x80;
}
else {
return 0;
}
uint32_t * res_p = (uint32_t *)bytes;
return *res_p;
}
/**
* Convert a wide character, e.g. 'Á' little endian to be UTF-8 compatible
* @param c a wide character or a Little endian number
* @return `c` in big endian
*/
static uint32_t lv_txt_utf8_conv_wc(uint32_t c)
{
#if LV_BIG_ENDIAN_SYSTEM == 0
/*Swap the bytes (UTF-8 is big endian, but the MCUs are little endian)*/
if((c & 0x80) != 0) {
uint32_t swapped;
uint8_t c8[4];
lv_memcpy_small(c8, &c, 4);
swapped = (c8[0] << 24) + (c8[1] << 16) + (c8[2] << 8) + (c8[3]);
uint8_t i;
for(i = 0; i < 4; i++) {
if((swapped & 0xFF) == 0)
swapped = (swapped >> 8); /*Ignore leading zeros (they were in the end originally)*/
}
c = swapped;
}
#endif
return c;
}
/**
* Decode an UTF-8 character from a string.
* @param txt pointer to '\0' terminated string
* @param i start byte index in 'txt' where to start.
* After call it will point to the next UTF-8 char in 'txt'.
* NULL to use txt[0] as index
* @return the decoded Unicode character or 0 on invalid UTF-8 code
*/
static uint32_t lv_txt_utf8_next(const char * txt, uint32_t * i)
{
/**
* Unicode to UTF-8
* 00000000 00000000 00000000 0xxxxxxx -> 0xxxxxxx
* 00000000 00000000 00000yyy yyxxxxxx -> 110yyyyy 10xxxxxx
* 00000000 00000000 zzzzyyyy yyxxxxxx -> 1110zzzz 10yyyyyy 10xxxxxx
* 00000000 000wwwzz zzzzyyyy yyxxxxxx -> 11110www 10zzzzzz 10yyyyyy 10xxxxxx
*/
uint32_t result = 0;
/*Dummy 'i' pointer is required*/
uint32_t i_tmp = 0;
if(i == NULL) i = &i_tmp;
/*Normal ASCII*/
if(LV_IS_ASCII(txt[*i])) {
result = txt[*i];
(*i)++;
}
/*Real UTF-8 decode*/
else {
/*2 bytes UTF-8 code*/
if(LV_IS_2BYTES_UTF8_CODE(txt[*i])) {
result = (uint32_t)(txt[*i] & 0x1F) << 6;
(*i)++;
if(LV_IS_INVALID_UTF8_CODE(txt[*i])) return 0;
result += (txt[*i] & 0x3F);
(*i)++;
}
/*3 bytes UTF-8 code*/
else if(LV_IS_3BYTES_UTF8_CODE(txt[*i])) {
result = (uint32_t)(txt[*i] & 0x0F) << 12;
(*i)++;
if(LV_IS_INVALID_UTF8_CODE(txt[*i])) return 0;
result += (uint32_t)(txt[*i] & 0x3F) << 6;
(*i)++;
if(LV_IS_INVALID_UTF8_CODE(txt[*i])) return 0;
result += (txt[*i] & 0x3F);
(*i)++;
}
/*4 bytes UTF-8 code*/
else if(LV_IS_4BYTES_UTF8_CODE(txt[*i])) {
result = (uint32_t)(txt[*i] & 0x07) << 18;
(*i)++;
if(LV_IS_INVALID_UTF8_CODE(txt[*i])) return 0;
result += (uint32_t)(txt[*i] & 0x3F) << 12;
(*i)++;
if(LV_IS_INVALID_UTF8_CODE(txt[*i])) return 0;
result += (uint32_t)(txt[*i] & 0x3F) << 6;
(*i)++;
if(LV_IS_INVALID_UTF8_CODE(txt[*i])) return 0;
result += txt[*i] & 0x3F;
(*i)++;
}
else {
(*i)++; /*Not UTF-8 char. Go the next.*/
}
}
return result;
}
/**
* Get previous UTF-8 character form a string.
* @param txt pointer to '\0' terminated string
* @param i start byte index in 'txt' where to start. After the call it will point to the previous
* UTF-8 char in 'txt'.
* @return the decoded Unicode character or 0 on invalid UTF-8 code
*/
static uint32_t lv_txt_utf8_prev(const char * txt, uint32_t * i)
{
uint8_t c_size;
uint8_t cnt = 0;
/*Try to find a !0 long UTF-8 char by stepping one character back*/
(*i)--;
do {
if(cnt >= 4) return 0; /*No UTF-8 char found before the initial*/
c_size = _lv_txt_encoded_size(&txt[*i]);
if(c_size == 0) {
if(*i != 0)
(*i)--;
else
return 0;
}
cnt++;
} while(c_size == 0);
uint32_t i_tmp = *i;
uint32_t letter = _lv_txt_encoded_next(txt, &i_tmp); /*Character found, get it*/
return letter;
}
/**
* Convert a character index (in an UTF-8 text) to byte index.
* E.g. in "AÁRT" index of 'R' is 2th char but start at byte 3 because 'Á' is 2 bytes long
* @param txt a '\0' terminated UTF-8 string
* @param utf8_id character index
* @return byte index of the 'utf8_id'th letter
*/
static uint32_t lv_txt_utf8_get_byte_id(const char * txt, uint32_t utf8_id)
{
uint32_t i;
uint32_t byte_cnt = 0;
for(i = 0; i < utf8_id && txt[byte_cnt] != '\0'; i++) {
uint8_t c_size = _lv_txt_encoded_size(&txt[byte_cnt]);
/* If the char was invalid tell it's 1 byte long*/
byte_cnt += c_size ? c_size : 1;
}
return byte_cnt;
}
/**
* Convert a byte index (in an UTF-8 text) to character index.
* E.g. in "AÁRT" index of 'R' is 2th char but start at byte 3 because 'Á' is 2 bytes long
* @param txt a '\0' terminated UTF-8 string
* @param byte_id byte index
* @return character index of the letter at 'byte_id'th position
*/
static uint32_t lv_txt_utf8_get_char_id(const char * txt, uint32_t byte_id)
{
uint32_t i = 0;
uint32_t char_cnt = 0;
while(i < byte_id) {
_lv_txt_encoded_next(txt, &i); /*'i' points to the next letter so use the prev. value*/
char_cnt++;
}
return char_cnt;
}
/**
* Get the number of characters (and NOT bytes) in a string. Decode it with UTF-8 if enabled.
* E.g.: "ÁBC" is 3 characters (but 4 bytes)
* @param txt a '\0' terminated char string
* @return number of characters
*/
static uint32_t lv_txt_utf8_get_length(const char * txt)
{
uint32_t len = 0;
uint32_t i = 0;
while(txt[i] != '\0') {
_lv_txt_encoded_next(txt, &i);
len++;
}
return len;
}
#elif LV_TXT_ENC == LV_TXT_ENC_ASCII
/*******************************
* ASCII ENCODER/DECODER
******************************/
/**
* Give the size of an ISO8859-1 coded character
* @param str pointer to a character in a string
* @return length of the UTF-8 character (1,2,3 or 4). O on invalid code
*/
static uint8_t lv_txt_iso8859_1_size(const char * str)
{
LV_UNUSED(str); /*Unused*/
return 1;
}
/**
* Convert a Unicode letter to ISO8859-1.
* @param letter_uni a Unicode letter
* @return ISO8859-1 coded character in Little Endian to be compatible with C chars (e.g. 'Á', 'Ű')
*/
static uint32_t lv_txt_unicode_to_iso8859_1(uint32_t letter_uni)
{
if(letter_uni < 256)
return letter_uni;
else
return ' ';
}
/**
* Convert wide characters to ASCII, however wide characters in ASCII range (e.g. 'A') are ASCII compatible by default.
* So this function does nothing just returns with `c`.
* @param c a character, e.g. 'A'
* @return same as `c`
*/
static uint32_t lv_txt_iso8859_1_conv_wc(uint32_t c)
{
return c;
}
/**
* Decode an ISO8859-1 character from a string.
* @param txt pointer to '\0' terminated string
* @param i start byte index in 'txt' where to start.
* After call it will point to the next UTF-8 char in 'txt'.
* NULL to use txt[0] as index
* @return the decoded Unicode character or 0 on invalid UTF-8 code
*/
static uint32_t lv_txt_iso8859_1_next(const char * txt, uint32_t * i)
{
if(i == NULL) return txt[0]; /*Get the next char*/
uint8_t letter = txt[*i];
(*i)++;
return letter;
}
/**
* Get previous ISO8859-1 character form a string.
* @param txt pointer to '\0' terminated string
* @param i start byte index in 'txt' where to start. After the call it will point to the previous UTF-8 char in 'txt'.
* @return the decoded Unicode character or 0 on invalid UTF-8 code
*/
static uint32_t lv_txt_iso8859_1_prev(const char * txt, uint32_t * i)
{
if(i == NULL) return *(txt - 1); /*Get the prev. char*/
(*i)--;
uint8_t letter = txt[*i];
return letter;
}
/**
* Convert a character index (in an ISO8859-1 text) to byte index.
* E.g. in "AÁRT" index of 'R' is 2th char but start at byte 3 because 'Á' is 2 bytes long
* @param txt a '\0' terminated UTF-8 string
* @param utf8_id character index
* @return byte index of the 'utf8_id'th letter
*/
static uint32_t lv_txt_iso8859_1_get_byte_id(const char * txt, uint32_t utf8_id)
{
LV_UNUSED(txt); /*Unused*/
return utf8_id; /*In Non encoded no difference*/
}
/**
* Convert a byte index (in an ISO8859-1 text) to character index.
* E.g. in "AÁRT" index of 'R' is 2th char but start at byte 3 because 'Á' is 2 bytes long
* @param txt a '\0' terminated UTF-8 string
* @param byte_id byte index
* @return character index of the letter at 'byte_id'th position
*/
static uint32_t lv_txt_iso8859_1_get_char_id(const char * txt, uint32_t byte_id)
{
LV_UNUSED(txt); /*Unused*/
return byte_id; /*In Non encoded no difference*/
}
/**
* Get the number of characters (and NOT bytes) in a string. Decode it with UTF-8 if enabled.
* E.g.: "ÁBC" is 3 characters (but 4 bytes)
* @param txt a '\0' terminated char string
* @return number of characters
*/
static uint32_t lv_txt_iso8859_1_get_length(const char * txt)
{
return strlen(txt);
}
#else
#error "Invalid character encoding. See `LV_TXT_ENC` in `lv_conf.h`"
#endif

264
MCU/components/modules/lvgl/src/misc/lv_txt.h Normal file
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@ -0,0 +1,264 @@
/**
* @file lv_txt.h
*
*/
#ifndef LV_TXT_H
#define LV_TXT_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include <stdbool.h>
#include <stdarg.h>
#include "lv_area.h"
#include "../font/lv_font.h"
#include "lv_printf.h"
#include "lv_types.h"
/*********************
* DEFINES
*********************/
#ifndef LV_TXT_COLOR_CMD
#define LV_TXT_COLOR_CMD "#"
#endif
#define LV_TXT_ENC_UTF8 1
#define LV_TXT_ENC_ASCII 2
/**********************
* TYPEDEFS
**********************/
/**
* Options for text rendering.
*/
enum {
LV_TEXT_FLAG_NONE = 0x00,
LV_TEXT_FLAG_RECOLOR = 0x01, /**< Enable parsing of recolor command*/
LV_TEXT_FLAG_EXPAND = 0x02, /**< Ignore max-width to avoid automatic word wrapping*/
LV_TEXT_FLAG_FIT = 0x04, /**< Max-width is already equal to the longest line. (Used to skip some calculation)*/
};
typedef uint8_t lv_text_flag_t;
/**
* State machine for text renderer.*/
enum {
LV_TEXT_CMD_STATE_WAIT, /**< Waiting for command*/
LV_TEXT_CMD_STATE_PAR, /**< Processing the parameter*/
LV_TEXT_CMD_STATE_IN, /**< Processing the command*/
};
typedef uint8_t lv_text_cmd_state_t;
/** Label align policy*/
enum {
LV_TEXT_ALIGN_AUTO, /**< Align text auto*/
LV_TEXT_ALIGN_LEFT, /**< Align text to left*/
LV_TEXT_ALIGN_CENTER, /**< Align text to center*/
LV_TEXT_ALIGN_RIGHT, /**< Align text to right*/
};
typedef uint8_t lv_text_align_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Get size of a text
* @param size_res pointer to a 'point_t' variable to store the result
* @param text pointer to a text
* @param font pointer to font of the text
* @param letter_space letter space of the text
* @param line_space line space of the text
* @param flags settings for the text from ::lv_text_flag_t
* @param max_width max width of the text (break the lines to fit this size). Set COORD_MAX to avoid
* line breaks
*/
void lv_txt_get_size(lv_point_t * size_res, const char * text, const lv_font_t * font, lv_coord_t letter_space,
lv_coord_t line_space, lv_coord_t max_width, lv_text_flag_t flag);
/**
* Get the next line of text. Check line length and break chars too.
* @param txt a '\0' terminated string
* @param font pointer to a font
* @param letter_space letter space
* @param max_width max width of the text (break the lines to fit this size). Set COORD_MAX to avoid
* line breaks
* @param used_width When used_width != NULL, save the width of this line if
* flag == LV_TEXT_FLAG_NONE, otherwise save -1.
* @param flags settings for the text from 'txt_flag_type' enum
* @return the index of the first char of the new line (in byte index not letter index. With UTF-8
* they are different)
*/
uint32_t _lv_txt_get_next_line(const char * txt, const lv_font_t * font, lv_coord_t letter_space,
lv_coord_t max_width, lv_coord_t * used_width, lv_text_flag_t flag);
/**
* Give the length of a text with a given font
* @param txt a '\0' terminate string
* @param length length of 'txt' in byte count and not characters (Á is 1 character but 2 bytes in
* UTF-8)
* @param font pointer to a font
* @param letter_space letter space
* @param flags settings for the text from 'txt_flag_t' enum
* @return length of a char_num long text
*/
lv_coord_t lv_txt_get_width(const char * txt, uint32_t length, const lv_font_t * font, lv_coord_t letter_space,
lv_text_flag_t flag);
/**
* Check next character in a string and decide if the character is part of the command or not
* @param state pointer to a txt_cmd_state_t variable which stores the current state of command
* processing
* @param c the current character
* @return true: the character is part of a command and should not be written,
* false: the character should be written
*/
bool _lv_txt_is_cmd(lv_text_cmd_state_t * state, uint32_t c);
/**
* Insert a string into an other
* @param txt_buf the original text (must be big enough for the result text and NULL terminated)
* @param pos position to insert (0: before the original text, 1: after the first char etc.)
* @param ins_txt text to insert, must be '\0' terminated
*/
void _lv_txt_ins(char * txt_buf, uint32_t pos, const char * ins_txt);
/**
* Delete a part of a string
* @param txt string to modify, must be '\0' terminated and should point to a heap or stack frame, not read-only memory.
* @param pos position where to start the deleting (0: before the first char, 1: after the first
* char etc.)
* @param len number of characters to delete
*/
void _lv_txt_cut(char * txt, uint32_t pos, uint32_t len);
/**
* return a new formatted text. Memory will be allocated to store the text.
* @param fmt `printf`-like format
* @return pointer to the allocated text string.
*/
char * _lv_txt_set_text_vfmt(const char * fmt, va_list ap) LV_FORMAT_ATTRIBUTE(1, 0);
/**
* Decode two encoded character from a string.
* @param txt pointer to '\0' terminated string
* @param letter the first decoded Unicode character or 0 on invalid data code
* @param letter_next the second decoded Unicode character or 0 on invalid data code
* @param ofs start index in 'txt' where to start.
* After the call it will point to the next encoded char in 'txt'.
* NULL to use txt[0] as index
*/
void _lv_txt_encoded_letter_next_2(const char * txt, uint32_t * letter, uint32_t * letter_next, uint32_t * ofs);
/**
* Test if char is break char or not (a text can broken here or not)
* @param letter a letter
* @return false: 'letter' is not break char
*/
static inline bool _lv_txt_is_break_char(uint32_t letter)
{
uint8_t i;
bool ret = false;
/* each chinese character can be break */
if(letter >= 0x4E00 && letter <= 0x9FA5) {
return true;
}
/*Compare the letter to TXT_BREAK_CHARS*/
for(i = 0; LV_TXT_BREAK_CHARS[i] != '\0'; i++) {
if(letter == (uint32_t)LV_TXT_BREAK_CHARS[i]) {
ret = true; /*If match then it is break char*/
break;
}
}
return ret;
}
/***************************************************************
* GLOBAL FUNCTION POINTERS FOR CHARACTER ENCODING INTERFACE
***************************************************************/
/**
* Give the size of an encoded character
* @param str pointer to a character in a string
* @return length of the encoded character (1,2,3 ...). O in invalid
*/
extern uint8_t (*_lv_txt_encoded_size)(const char *);
/**
* Convert a Unicode letter to encoded
* @param letter_uni a Unicode letter
* @return Encoded character in Little Endian to be compatible with C chars (e.g. 'Á', 'Ü')
*/
extern uint32_t (*_lv_txt_unicode_to_encoded)(uint32_t);
/**
* Convert a wide character, e.g. 'Á' little endian to be compatible with the encoded format.
* @param c a wide character
* @return `c` in the encoded format
*/
extern uint32_t (*_lv_txt_encoded_conv_wc)(uint32_t c);
/**
* Decode the next encoded character from a string.
* @param txt pointer to '\0' terminated string
* @param i start index in 'txt' where to start.
* After the call it will point to the next encoded char in 'txt'.
* NULL to use txt[0] as index
* @return the decoded Unicode character or 0 on invalid data code
*/
extern uint32_t (*_lv_txt_encoded_next)(const char *, uint32_t *);
/**
* Get the previous encoded character form a string.
* @param txt pointer to '\0' terminated string
* @param i_start index in 'txt' where to start. After the call it will point to the previous
* encoded char in 'txt'.
* @return the decoded Unicode character or 0 on invalid data
*/
extern uint32_t (*_lv_txt_encoded_prev)(const char *, uint32_t *);
/**
* Convert a letter index (in the encoded text) to byte index.
* E.g. in UTF-8 "AÁRT" index of 'R' is 2 but start at byte 3 because 'Á' is 2 bytes long
* @param txt a '\0' terminated UTF-8 string
* @param enc_id letter index
* @return byte index of the 'enc_id'th letter
*/
extern uint32_t (*_lv_txt_encoded_get_byte_id)(const char *, uint32_t);
/**
* Convert a byte index (in an encoded text) to character index.
* E.g. in UTF-8 "AÁRT" index of 'R' is 2 but start at byte 3 because 'Á' is 2 bytes long
* @param txt a '\0' terminated UTF-8 string
* @param byte_id byte index
* @return character index of the letter at 'byte_id'th position
*/
extern uint32_t (*_lv_txt_encoded_get_char_id)(const char *, uint32_t);
/**
* Get the number of characters (and NOT bytes) in a string.
* E.g. in UTF-8 "ÁBC" is 3 characters (but 4 bytes)
* @param txt a '\0' terminated char string
* @return number of characters
*/
extern uint32_t (*_lv_txt_get_encoded_length)(const char *);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_TXT_H*/

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/**
* @file lv_txt_ap.c
*
*/
/*********************
* INCLUDES
*********************/
#include <stddef.h>
#include "lv_bidi.h"
#include "lv_txt.h"
#include "lv_txt_ap.h"
#include "lv_mem.h"
#include "../draw/lv_draw.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
typedef struct {
uint8_t char_offset;
uint16_t char_end_form;
int8_t char_begining_form_offset;
int8_t char_middle_form_offset;
int8_t char_isolated_form_offset;
struct {
uint8_t conj_to_previous;
uint8_t conj_to_next;
} ap_chars_conjunction;
} ap_chars_map_t;
/**********************
* STATIC PROTOTYPES
**********************/
#if LV_USE_ARABIC_PERSIAN_CHARS == 1
static uint32_t lv_ap_get_char_index(uint16_t c);
static uint32_t lv_txt_lam_alef(uint32_t ch_curr, uint32_t ch_next);
static bool lv_txt_is_arabic_vowel(uint16_t c);
/**********************
* STATIC VARIABLES
**********************/
const ap_chars_map_t ap_chars_map[] = {
/*{Key Offset, End, Beginning, Middle, Isolated, {conjunction}}*/
{1, 0xFE84, -1, 0, -1, {1, 0}}, // أ
{2, 0xFE86, -1, 0, -1, {1, 0}}, // ؤ
{3, 0xFE88, -1, 0, -1, {1, 0}}, // ﺇ
{4, 0xFE8A, 1, 2, -1, {1, 0}}, // ئ
{5, 0xFE8E, -1, 0, -1, {1, 0}}, // آ
{6, 0xFE90, 1, 2, -1, {1, 1}}, // ب
{92, 0xFB57, 1, 2, -1, {1, 1}}, // پ
{8, 0xFE96, 1, 2, -1, {1, 1}}, // ت
{9, 0xFE9A, 1, 2, -1, {1, 1}}, // ث
{10, 0xFE9E, 1, 2, -1, {1, 1}}, // ج
{100, 0xFB7B, 1, 2, -1, {1, 1}}, // چ
{11, 0xFEA2, 1, 2, -1, {1, 1}}, // ح
{12, 0xFEA6, 1, 2, -1, {1, 1}}, // خ
{13, 0xFEAA, -1, 0, -1, {1, 0}}, // د
{14, 0xFEAC, -1, 0, -1, {1, 0}}, // ذ
{15, 0xFEAE, -1, 0, -1, {1, 0}}, // ر
{16, 0xFEB0, -1, 0, -1, {1, 0}}, // ز
{118, 0xFB8B, -1, 0, -1, {1, 0}}, // ژ
{17, 0xFEB2, 1, 2, -1, {1, 1}}, // س
{18, 0xFEB6, 1, 2, -1, {1, 1}}, // ش
{19, 0xFEBA, 1, 2, -1, {1, 1}}, // ص
{20, 0xFEBE, 1, 2, -1, {1, 1}}, // ض
{21, 0xFEC2, 1, 2, -1, {1, 1}}, // ط
{22, 0xFEC6, 1, 2, -1, {1, 1}}, // ظ
{23, 0xFECA, 1, 2, -1, {1, 1}}, // ع
{24, 0xFECE, 1, 2, -1, {1, 1}}, // غ
{30, 0x0640, 0, 0, 0, {1, 1}}, // - (mad, hyphen)
{31, 0xFED2, 1, 2, -1, {1, 1}}, // ف
{32, 0xFED6, 1, 2, -1, {1, 1}}, // ق
{135, 0xFB8F, 1, 2, -1, {1, 1}}, // ک
{33, 0xFEDA, 1, 2, -1, {1, 1}}, // ﻙ
{141, 0xFB93, 1, 2, -1, {1, 1}}, // گ
{34, 0xFEDE, 1, 2, -1, {1, 1}}, // ل
{35, 0xFEE2, 1, 2, -1, {1, 1}}, // م
{36, 0xFEE6, 1, 2, -1, {1, 1}}, // ن
{38, 0xFEEE, -1, 0, -1, {1, 0}}, // و
{37, 0xFEEA, 1, 2, -1, {1, 1}}, // ه
{39, 0xFEF0, 0, 0, -1, {1, 0}}, // ى
{40, 0xFEF2, 1, 2, -1, {1, 1}}, // ي
{170, 0xFBFD, 1, 2, -1, {1, 1}}, // ی
{7, 0xFE94, 1, 2, -1, {1, 0}}, // ة
{206, 0x06F0, 1, 2, -1, {0, 0}}, // ۰
{207, 0x06F1, 0, 0, 0, {0, 0}}, // ۱
{208, 0x06F2, 0, 0, 0, {0, 0}}, // ۲
{209, 0x06F3, 0, 0, 0, {0, 0}}, // ۳
{210, 0x06F4, 0, 0, 0, {0, 0}}, // ۴
{211, 0x06F5, 0, 0, 0, {0, 0}}, // ۵
{212, 0x06F6, 0, 0, 0, {0, 0}}, // ۶
{213, 0x06F7, 0, 0, 0, {0, 0}}, // ۷
{214, 0x06F8, 0, 0, 0, {0, 0}}, // ۸
{215, 0x06F9, 0, 0, 0, {0, 0}}, // ۹
LV_AP_END_CHARS_LIST
};
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
uint32_t _lv_txt_ap_calc_bytes_cnt(const char * txt)
{
uint32_t txt_length = 0;
uint32_t chars_cnt = 0;
uint32_t current_ap_idx = 0;
uint32_t i, j;
uint32_t ch_enc;
txt_length = _lv_txt_get_encoded_length(txt);
i = 0;
j = 0;
while(i < txt_length) {
ch_enc = _lv_txt_encoded_next(txt, &j);
current_ap_idx = lv_ap_get_char_index(ch_enc);
if(current_ap_idx != LV_UNDEF_ARABIC_PERSIAN_CHARS)
ch_enc = ap_chars_map[current_ap_idx].char_end_form;
if(ch_enc < 0x80)
chars_cnt++;
else if(ch_enc < 0x0800)
chars_cnt += 2;
else if(ch_enc < 0x010000)
chars_cnt += 3;
else
chars_cnt += 4;
i++;
}
return chars_cnt + 1;
}
void _lv_txt_ap_proc(const char * txt, char * txt_out)
{
uint32_t txt_length = 0;
uint32_t index_current, idx_next, idx_previous, i, j;
uint32_t * ch_enc;
uint32_t * ch_fin;
char * txt_out_temp;
txt_length = _lv_txt_get_encoded_length(txt);
ch_enc = (uint32_t *)lv_mem_alloc(sizeof(uint32_t) * (txt_length + 1));
ch_fin = (uint32_t *)lv_mem_alloc(sizeof(uint32_t) * (txt_length + 1));
i = 0;
j = 0;
while(j < txt_length)
ch_enc[j++] = _lv_txt_encoded_next(txt, &i);
ch_enc[j] = 0;
i = 0;
j = 0;
idx_previous = LV_UNDEF_ARABIC_PERSIAN_CHARS;
while(i < txt_length) {
index_current = lv_ap_get_char_index(ch_enc[i]);
idx_next = lv_ap_get_char_index(ch_enc[i + 1]);
if(lv_txt_is_arabic_vowel(ch_enc[i])) { // Current character is a vowel
ch_fin[j] = ch_enc[i];
i++;
j++;
continue; // Skip this character
}
else if(lv_txt_is_arabic_vowel(ch_enc[i + 1])) { // Next character is a vowel
idx_next = lv_ap_get_char_index(ch_enc[i + 2]); // Skip the vowel character to join with the character after it
}
if(index_current == LV_UNDEF_ARABIC_PERSIAN_CHARS) {
ch_fin[j] = ch_enc[i];
j++;
i++;
idx_previous = LV_UNDEF_ARABIC_PERSIAN_CHARS;
continue;
}
uint8_t conjunction_to_previuse = (i == 0 ||
idx_previous == LV_UNDEF_ARABIC_PERSIAN_CHARS) ? 0 : ap_chars_map[idx_previous].ap_chars_conjunction.conj_to_next;
uint8_t conjunction_to_next = ((i == txt_length - 1) ||
idx_next == LV_UNDEF_ARABIC_PERSIAN_CHARS) ? 0 : ap_chars_map[idx_next].ap_chars_conjunction.conj_to_previous;
uint32_t lam_alef = lv_txt_lam_alef(index_current, idx_next);
if(lam_alef) {
if(conjunction_to_previuse) {
lam_alef ++;
}
ch_fin[j] = lam_alef;
idx_previous = LV_UNDEF_ARABIC_PERSIAN_CHARS;
i += 2;
j++;
continue;
}
if(conjunction_to_previuse && conjunction_to_next)
ch_fin[j] = ap_chars_map[index_current].char_end_form + ap_chars_map[index_current].char_middle_form_offset;
else if(!conjunction_to_previuse && conjunction_to_next)
ch_fin[j] = ap_chars_map[index_current].char_end_form + ap_chars_map[index_current].char_begining_form_offset;
else if(conjunction_to_previuse && !conjunction_to_next)
ch_fin[j] = ap_chars_map[index_current].char_end_form;
else
ch_fin[j] = ap_chars_map[index_current].char_end_form + ap_chars_map[index_current].char_isolated_form_offset;
idx_previous = index_current;
i++;
j++;
}
ch_fin[j] = 0;
for(i = 0; i < txt_length; i++)
ch_enc[i] = 0;
for(i = 0; i < j; i++)
ch_enc[i] = ch_fin[i];
lv_mem_free(ch_fin);
txt_out_temp = txt_out;
i = 0;
while(i < txt_length) {
if(ch_enc[i] < 0x80) {
*(txt_out_temp++) = ch_enc[i] & 0xFF;
}
else if(ch_enc[i] < 0x0800) {
*(txt_out_temp++) = ((ch_enc[i] >> 6) & 0x1F) | 0xC0;
*(txt_out_temp++) = ((ch_enc[i] >> 0) & 0x3F) | 0x80;
}
else if(ch_enc[i] < 0x010000) {
*(txt_out_temp++) = ((ch_enc[i] >> 12) & 0x0F) | 0xE0;
*(txt_out_temp++) = ((ch_enc[i] >> 6) & 0x3F) | 0x80;
*(txt_out_temp++) = ((ch_enc[i] >> 0) & 0x3F) | 0x80;
}
else if(ch_enc[i] < 0x110000) {
*(txt_out_temp++) = ((ch_enc[i] >> 18) & 0x07) | 0xF0;
*(txt_out_temp++) = ((ch_enc[i] >> 12) & 0x3F) | 0x80;
*(txt_out_temp++) = ((ch_enc[i] >> 6) & 0x3F) | 0x80;
*(txt_out_temp++) = ((ch_enc[i] >> 0) & 0x3F) | 0x80;
}
i++;
}
*(txt_out_temp) = '\0';
lv_mem_free(ch_enc);
}
/**********************
* STATIC FUNCTIONS
**********************/
static uint32_t lv_ap_get_char_index(uint16_t c)
{
for(uint8_t i = 0; ap_chars_map[i].char_end_form; i++) {
if(c == (ap_chars_map[i].char_offset + LV_AP_ALPHABET_BASE_CODE))
return i;
else if(c == ap_chars_map[i].char_end_form //is it an End form
|| c == (ap_chars_map[i].char_end_form + ap_chars_map[i].char_begining_form_offset) //is it a Beginning form
|| c == (ap_chars_map[i].char_end_form + ap_chars_map[i].char_middle_form_offset) //is it a middle form
|| c == (ap_chars_map[i].char_end_form + ap_chars_map[i].char_isolated_form_offset)) { //is it an isolated form
return i;
}
}
return LV_UNDEF_ARABIC_PERSIAN_CHARS;
}
static uint32_t lv_txt_lam_alef(uint32_t ch_curr, uint32_t ch_next)
{
uint32_t ch_code = 0;
if(ap_chars_map[ch_curr].char_offset != 34) {
return 0;
}
if(ch_next == LV_UNDEF_ARABIC_PERSIAN_CHARS) {
return 0;
}
ch_code = ap_chars_map[ch_next].char_offset + LV_AP_ALPHABET_BASE_CODE;
if(ch_code == 0x0622) {
return 0xFEF5; // (lam-alef) mad
}
if(ch_code == 0x0623) {
return 0xFEF7; // (lam-alef) top hamza
}
if(ch_code == 0x0625) {
return 0xFEF9; // (lam-alef) bot hamza
}
if(ch_code == 0x0627) {
return 0xFEFB; // (lam-alef) alef
}
return 0;
}
static bool lv_txt_is_arabic_vowel(uint16_t c)
{
return (c >= 0x064B) && (c <= 0x0652);
}
#endif

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/**
* @file lv_txt_ap.h
*
*/
#ifndef LV_TXT_AP_H
#define LV_TXT_AP_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include <stddef.h>
#include "lv_txt.h"
#include "../draw/lv_draw.h"
#if LV_USE_ARABIC_PERSIAN_CHARS == 1
/*********************
* DEFINES
*********************/
#define LV_UNDEF_ARABIC_PERSIAN_CHARS (UINT32_MAX)
#define LV_AP_ALPHABET_BASE_CODE 0x0622
#define LV_AP_END_CHARS_LIST {0,0,0,0,0,{0,0}}
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
uint32_t _lv_txt_ap_calc_bytes_cnt(const char * txt);
void _lv_txt_ap_proc(const char * txt, char * txt_out);
/**********************
* MACROS
**********************/
#endif // LV_USE_ARABIC_PERSIAN_CHARS
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_TXT_AP_H*/

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/**
* @file lv_types.h
*
*/
#ifndef LV_TYPES_H
#define LV_TYPES_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include <stdint.h>
/*********************
* DEFINES
*********************/
// If __UINTPTR_MAX__ or UINTPTR_MAX are available, use them to determine arch size
#if defined(__UINTPTR_MAX__) && __UINTPTR_MAX__ > 0xFFFFFFFF
#define LV_ARCH_64
#elif defined(UINTPTR_MAX) && UINTPTR_MAX > 0xFFFFFFFF
#define LV_ARCH_64
// Otherwise use compiler-dependent means to determine arch size
#elif defined(_WIN64) || defined(__x86_64__) || defined(__ppc64__) || defined (__aarch64__)
#define LV_ARCH_64
#endif
/**********************
* TYPEDEFS
**********************/
/**
* LVGL error codes.
*/
enum {
LV_RES_INV = 0, /*Typically indicates that the object is deleted (become invalid) in the action
function or an operation was failed*/
LV_RES_OK, /*The object is valid (no deleted) after the action*/
};
typedef uint8_t lv_res_t;
#if defined(__cplusplus) || __STDC_VERSION__ >= 199901L
// If c99 or newer, use the definition of uintptr_t directly from <stdint.h>
typedef uintptr_t lv_uintptr_t;
#else
// Otherwise, use the arch size determination
#ifdef LV_ARCH_64
typedef uint64_t lv_uintptr_t;
#else
typedef uint32_t lv_uintptr_t;
#endif
#endif
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* MACROS
**********************/
#define LV_UNUSED(x) ((void)x)
#define _LV_CONCAT(x, y) x ## y
#define LV_CONCAT(x, y) _LV_CONCAT(x, y)
#define _LV_CONCAT3(x, y, z) x ## y ## z
#define LV_CONCAT3(x, y, z) _LV_CONCAT3(x, y, z)
#if defined(PYCPARSER) || defined(__CC_ARM)
#define LV_FORMAT_ATTRIBUTE(fmtstr, vararg)
#elif defined(__GNUC__) && ((__GNUC__ == 4 && __GNUC_MINOR__ >= 4) || __GNUC__ > 4)
#define LV_FORMAT_ATTRIBUTE(fmtstr, vararg) __attribute__((format(gnu_printf, fmtstr, vararg)))
#elif (defined(__clang__) || defined(__GNUC__) || defined(__GNUG__))
#define LV_FORMAT_ATTRIBUTE(fmtstr, vararg) __attribute__((format(printf, fmtstr, vararg)))
#else
#define LV_FORMAT_ATTRIBUTE(fmtstr, vararg)
#endif
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_TYPES_H*/

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/**
* @file lv_utils.c
*
*/
/*********************
* INCLUDES
*********************/
#include <stddef.h>
#include "lv_utils.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/** Searches base[0] to base[n - 1] for an item that matches *key.
*
* @note The function cmp must return negative if its first
* argument (the search key) is less than its second (a table entry),
* zero if equal, and positive if greater.
*
* @note Items in the array must be in ascending order.
*
* @param key Pointer to item being searched for
* @param base Pointer to first element to search
* @param n Number of elements
* @param size Size of each element
* @param cmp Pointer to comparison function (see #unicode_list_compare as a comparison function
* example)
*
* @return a pointer to a matching item, or NULL if none exists.
*/
void * _lv_utils_bsearch(const void * key, const void * base, uint32_t n, uint32_t size,
int32_t (*cmp)(const void * pRef, const void * pElement))
{
const char * middle;
int32_t c;
for(middle = base; n != 0;) {
middle += (n / 2) * size;
if((c = (*cmp)(key, middle)) > 0) {
n = (n / 2) - ((n & 1) == 0);
base = (middle += size);
}
else if(c < 0) {
n /= 2;
middle = base;
}
else {
return (char *)middle;
}
}
return NULL;
}
/**********************
* STATIC FUNCTIONS
**********************/

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/**
* @file lv_utils.h
*
*/
#ifndef LV_UTILS_H
#define LV_UTILS_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include <stdint.h>
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/** Searches base[0] to base[n - 1] for an item that matches *key.
*
* @note The function cmp must return negative if it's first
* argument (the search key) is less that it's second (a table entry),
* zero if equal, and positive if greater.
*
* @note Items in the array must be in ascending order.
*
* @param key Pointer to item being searched for
* @param base Pointer to first element to search
* @param n Number of elements
* @param size Size of each element
* @param cmp Pointer to comparison function (see #unicode_list_compare as a comparison function
* example)
*
* @return a pointer to a matching item, or NULL if none exists.
*/
void * _lv_utils_bsearch(const void * key, const void * base, uint32_t n, uint32_t size,
int32_t (*cmp)(const void * pRef, const void * pElement));
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif