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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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39
Demo/lvgl/examples/scroll/index.rst Normal file
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C
^
Nested scrolling
""""""""""""""""
.. lv_example:: scroll/lv_example_scroll_1
:language: c
Snapping
""""""""""""""""
.. lv_example:: scroll/lv_example_scroll_2
:language: c
Floating button
""""""""""""""""
.. lv_example:: scroll/lv_example_scroll_3
:language: c
Styling the scrollbars
""""""""""""""""""""""""
.. lv_example:: scroll/lv_example_scroll_4
:language: c
Right to left scrolling
""""""""""""""""""""""""
.. lv_example:: scroll/lv_example_scroll_5
:language: c
Translate on scroll
""""""""""""""""""""""""
.. lv_example:: scroll/lv_example_scroll_6
:language: c
MicroPython
^^^^^^^^^^^
No examples yet.

44
Demo/lvgl/examples/scroll/lv_example_scroll.h Normal file
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/**
* @file lv_example_scroll.h
*
*/
#ifndef LV_EXAMPLE_SCROLL_H
#define LV_EXAMPLE_SCROLL_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
void lv_example_scroll_1(void);
void lv_example_scroll_2(void);
void lv_example_scroll_3(void);
void lv_example_scroll_4(void);
void lv_example_scroll_5(void);
void lv_example_scroll_6(void);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_EXAMPLE_SCROLL_H*/

43
Demo/lvgl/examples/scroll/lv_example_scroll_1.c Normal file
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#include "../lv_examples.h"
#if LV_BUILD_EXAMPLES
/**
* Demonstrate how scrolling appears automatically
*/
void lv_example_scroll_1(void)
{
/*Create an object with the new style*/
lv_obj_t * panel = lv_obj_create(lv_scr_act());
lv_obj_set_size(panel, 200, 200);
lv_obj_center(panel);
lv_obj_t * child;
lv_obj_t * label;
child = lv_obj_create(panel);
lv_obj_set_pos(child, 0, 0);
lv_obj_set_size(child, 70, 70);
label = lv_label_create(child);
lv_label_set_text(label, "Zero");
lv_obj_center(label);
child = lv_obj_create(panel);
lv_obj_set_pos(child, 160, 80);
lv_obj_set_size(child, 80, 80);
lv_obj_t * child2 = lv_btn_create(child);
lv_obj_set_size(child2, 100, 50);
label = lv_label_create(child2);
lv_label_set_text(label, "Right");
lv_obj_center(label);
child = lv_obj_create(panel);
lv_obj_set_pos(child, 40, 160);
lv_obj_set_size(child, 100, 70);
label = lv_label_create(child);
lv_label_set_text(label, "Bottom");
lv_obj_center(label);
}
#endif

56
Demo/lvgl/examples/scroll/lv_example_scroll_2.c Normal file
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#include "../lv_examples.h"
#if LV_BUILD_EXAMPLES && LV_USE_FLEX
static void sw_event_cb(lv_event_t * e)
{
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t * sw = lv_event_get_target(e);
if(code == LV_EVENT_VALUE_CHANGED) {
lv_obj_t * list = lv_event_get_user_data(e);
if(lv_obj_has_state(sw, LV_STATE_CHECKED)) lv_obj_add_flag(list, LV_OBJ_FLAG_SCROLL_ONE);
else lv_obj_clear_flag(list, LV_OBJ_FLAG_SCROLL_ONE);
}
}
/**
* Show an example to scroll snap
*/
void lv_example_scroll_2(void)
{
lv_obj_t * panel = lv_obj_create(lv_scr_act());
lv_obj_set_size(panel, 280, 120);
lv_obj_set_scroll_snap_x(panel, LV_SCROLL_SNAP_CENTER);
lv_obj_set_flex_flow(panel, LV_FLEX_FLOW_ROW);
lv_obj_align(panel, LV_ALIGN_CENTER, 0, 20);
uint32_t i;
for(i = 0; i < 10; i++) {
lv_obj_t * btn = lv_btn_create(panel);
lv_obj_set_size(btn, 150, lv_pct(100));
lv_obj_t * label = lv_label_create(btn);
if(i == 3) {
lv_label_set_text_fmt(label, "Panel %d\nno snap", i);
lv_obj_clear_flag(btn, LV_OBJ_FLAG_SNAPABLE);
} else {
lv_label_set_text_fmt(label, "Panel %d", i);
}
lv_obj_center(label);
}
lv_obj_update_snap(panel, LV_ANIM_ON);
#if LV_USE_SWITCH
/*Switch between "One scroll" and "Normal scroll" mode*/
lv_obj_t * sw = lv_switch_create(lv_scr_act());
lv_obj_align(sw, LV_ALIGN_TOP_RIGHT, -20, 10);
lv_obj_add_event_cb(sw, sw_event_cb, LV_EVENT_ALL, panel);
lv_obj_t * label = lv_label_create(lv_scr_act());
lv_label_set_text(label, "One scroll");
lv_obj_align_to(label, sw, LV_ALIGN_OUT_BOTTOM_MID, 0, 5);
#endif
}
#endif

49
Demo/lvgl/examples/scroll/lv_example_scroll_3.c Normal file
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#include "../lv_examples.h"
#if LV_BUILD_EXAMPLES && LV_USE_LIST
static uint32_t btn_cnt = 1;
static void float_btn_event_cb(lv_event_t * e)
{
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t * float_btn = lv_event_get_target(e);
if(code == LV_EVENT_CLICKED) {
lv_obj_t * list = lv_event_get_user_data(e);
char buf[32];
lv_snprintf(buf, sizeof(buf), "Track %d", btn_cnt);
lv_obj_t * list_btn = lv_list_add_btn(list, LV_SYMBOL_AUDIO, buf);
btn_cnt++;
lv_obj_move_foreground(float_btn);
lv_obj_scroll_to_view(list_btn, LV_ANIM_ON);
}
}
/**
* Create a list a with a floating button
*/
void lv_example_scroll_3(void)
{
lv_obj_t * list = lv_list_create(lv_scr_act());
lv_obj_set_size(list, 280, 220);
lv_obj_center(list);
for(btn_cnt = 1; btn_cnt <= 2; btn_cnt++) {
char buf[32];
lv_snprintf(buf, sizeof(buf), "Track %d", btn_cnt);
lv_list_add_btn(list, LV_SYMBOL_AUDIO, buf);
}
lv_obj_t * float_btn = lv_btn_create(list);
lv_obj_set_size(float_btn, 50, 50);
lv_obj_add_flag(float_btn, LV_OBJ_FLAG_FLOATING);
lv_obj_align(float_btn, LV_ALIGN_BOTTOM_RIGHT, 0, -lv_obj_get_style_pad_right(list, LV_PART_MAIN));
lv_obj_add_event_cb(float_btn, float_btn_event_cb, LV_EVENT_ALL, list);
lv_obj_set_style_radius(float_btn, LV_RADIUS_CIRCLE, 0);
lv_obj_set_style_bg_img_src(float_btn, LV_SYMBOL_PLUS, 0);
lv_obj_set_style_text_font(float_btn, lv_theme_get_font_large(float_btn), 0);
}
#endif

68
Demo/lvgl/examples/scroll/lv_example_scroll_4.c Normal file
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#include "../lv_examples.h"
#if LV_BUILD_EXAMPLES && LV_USE_LIST
/**
* Styling the scrollbars
*/
void lv_example_scroll_4(void)
{
lv_obj_t * obj = lv_obj_create(lv_scr_act());
lv_obj_set_size(obj, 200, 100);
lv_obj_center(obj);
lv_obj_t * label = lv_label_create(obj);
lv_label_set_text(label,
"Lorem ipsum dolor sit amet, consectetur adipiscing elit.\n"
"Etiam dictum, tortor vestibulum lacinia laoreet, mi neque consectetur neque, vel mattis odio dolor egestas ligula. \n"
"Sed vestibulum sapien nulla, id convallis ex porttitor nec. \n"
"Duis et massa eu libero accumsan faucibus a in arcu. \n"
"Ut pulvinar odio lorem, vel tempus turpis condimentum quis. Nam consectetur condimentum sem in auctor. \n"
"Sed nisl augue, venenatis in blandit et, gravida ac tortor. \n"
"Etiam dapibus elementum suscipit. \n"
"Proin mollis sollicitudin convallis. \n"
"Integer dapibus tempus arcu nec viverra. \n"
"Donec molestie nulla enim, eu interdum velit placerat quis. \n"
"Donec id efficitur risus, at molestie turpis. \n"
"Suspendisse vestibulum consectetur nunc ut commodo. \n"
"Fusce molestie rhoncus nisi sit amet tincidunt. \n"
"Suspendisse a nunc ut magna ornare volutpat.");
/*Remove the style of scrollbar to have clean start*/
lv_obj_remove_style(obj, NULL, LV_PART_SCROLLBAR | LV_STATE_ANY);
/*Create a transition the animate the some properties on state change*/
static const lv_style_prop_t props[] = {LV_STYLE_BG_OPA, LV_STYLE_WIDTH, 0};
static lv_style_transition_dsc_t trans;
lv_style_transition_dsc_init(&trans, props, lv_anim_path_linear, 200, 0, NULL);
/*Create a style for the scrollbars*/
static lv_style_t style;
lv_style_init(&style);
lv_style_set_width(&style, 4); /*Width of the scrollbar*/
lv_style_set_pad_right(&style, 5); /*Space from the parallel side*/
lv_style_set_pad_top(&style, 5); /*Space from the perpendicular side*/
lv_style_set_radius(&style, 2);
lv_style_set_bg_opa(&style, LV_OPA_70);
lv_style_set_bg_color(&style, lv_palette_main(LV_PALETTE_BLUE));
lv_style_set_border_color(&style, lv_palette_darken(LV_PALETTE_BLUE, 3));
lv_style_set_border_width(&style, 2);
lv_style_set_shadow_width(&style, 8);
lv_style_set_shadow_spread(&style, 2);
lv_style_set_shadow_color(&style, lv_palette_darken(LV_PALETTE_BLUE, 1));
lv_style_set_transition(&style, &trans);
/*Make the scrollbars wider and use 100% opacity when scrolled*/
static lv_style_t style_scrolled;
lv_style_init(&style_scrolled);
lv_style_set_width(&style_scrolled, 8);
lv_style_set_bg_opa(&style_scrolled, LV_OPA_COVER);
lv_obj_add_style(obj, &style, LV_PART_SCROLLBAR);
lv_obj_add_style(obj, &style_scrolled, LV_PART_SCROLLBAR | LV_STATE_SCROLLED);
}
#endif

22
Demo/lvgl/examples/scroll/lv_example_scroll_5.c Normal file
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#include "../lv_examples.h"
#if LV_BUILD_EXAMPLES && LV_FONT_DEJAVU_16_PERSIAN_HEBREW
/**
* Scrolling with Right To Left base direction
*/
void lv_example_scroll_5(void)
{
lv_obj_t * obj = lv_obj_create(lv_scr_act());
lv_obj_set_style_base_dir(obj, LV_BASE_DIR_RTL, 0);
lv_obj_set_size(obj, 200, 100);
lv_obj_center(obj);
lv_obj_t * label = lv_label_create(obj);
lv_label_set_text(label,"میکروکُنترولر (به انگلیسی: Microcontroller) گونه‌ای ریزپردازنده است که دارای حافظهٔ دسترسی تصادفی (RAM) و حافظهٔ فقط‌خواندنی (ROM)، تایمر، پورت‌های ورودی و خروجی (I/O) و درگاه ترتیبی (Serial Port پورت سریال)، درون خود تراشه است، و می‌تواند به تنهایی ابزارهای دیگر را کنترل کند. به عبارت دیگر یک میکروکنترلر، مدار مجتمع کوچکی است که از یک CPU کوچک و اجزای دیگری مانند تایمر، درگاه‌های ورودی و خروجی آنالوگ و دیجیتال و حافظه تشکیل شده‌است.");
lv_obj_set_width(label, 400);
lv_obj_set_style_text_font(label, &lv_font_dejavu_16_persian_hebrew, 0);
}
#endif

79
Demo/lvgl/examples/scroll/lv_example_scroll_6.c Normal file
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#include "../lv_examples.h"
#if LV_BUILD_EXAMPLES
static void scroll_event_cb(lv_event_t * e)
{
lv_obj_t * cont = lv_event_get_target(e);
lv_area_t cont_a;
lv_obj_get_coords(cont, &cont_a);
lv_coord_t cont_y_center = cont_a.y1 + lv_area_get_height(&cont_a) / 2;
lv_coord_t r = lv_obj_get_height(cont) * 7 / 10;
uint32_t i;
uint32_t child_cnt = lv_obj_get_child_cnt(cont);
for(i = 0; i < child_cnt; i++) {
lv_obj_t * child = lv_obj_get_child(cont, i);
lv_area_t child_a;
lv_obj_get_coords(child, &child_a);
lv_coord_t child_y_center = child_a.y1 + lv_area_get_height(&child_a) / 2;
lv_coord_t diff_y = child_y_center - cont_y_center;
diff_y = LV_ABS(diff_y);
/*Get the x of diff_y on a circle.*/
lv_coord_t x;
/*If diff_y is out of the circle use the last point of the circle (the radius)*/
if(diff_y >= r) {
x = r;
} else {
/*Use Pythagoras theorem to get x from radius and y*/
lv_coord_t x_sqr = r * r - diff_y * diff_y;
lv_sqrt_res_t res;
lv_sqrt(x_sqr, &res, 0x8000); /*Use lvgl's built in sqrt root function*/
x = r - res.i;
}
/*Translate the item by the calculated X coordinate*/
lv_obj_set_style_translate_x(child, x, 0);
/*Use some opacity with larger translations*/
lv_opa_t opa = lv_map(x, 0, r, LV_OPA_TRANSP, LV_OPA_COVER);
lv_obj_set_style_opa(child, LV_OPA_COVER - opa, 0);
}
}
/**
* Translate the object as they scroll
*/
void lv_example_scroll_6(void)
{
lv_obj_t * cont = lv_obj_create(lv_scr_act());
lv_obj_set_size(cont, 200, 200);
lv_obj_center(cont);
lv_obj_set_flex_flow(cont, LV_FLEX_FLOW_COLUMN);
lv_obj_add_event_cb(cont, scroll_event_cb, LV_EVENT_SCROLL, NULL);
lv_obj_set_style_radius(cont, LV_RADIUS_CIRCLE, 0);
lv_obj_set_style_clip_corner(cont, true, 0);
lv_obj_set_scroll_dir(cont, LV_DIR_VER);
lv_obj_set_scroll_snap_y(cont, LV_SCROLL_SNAP_CENTER);
lv_obj_set_scrollbar_mode(cont, LV_SCROLLBAR_MODE_OFF);
uint32_t i;
for(i = 0; i < 20; i++) {
lv_obj_t * btn = lv_btn_create(cont);
lv_obj_set_width(btn, lv_pct(100));
lv_obj_t * label = lv_label_create(btn);
lv_label_set_text_fmt(label, "Button %d", i);
}
/*Update the buttons position manually for first*/
lv_event_send(cont, LV_EVENT_SCROLL, NULL);
/*Be sure the fist button is in the middle*/
lv_obj_scroll_to_view(lv_obj_get_child(cont, 0), LV_ANIM_OFF);
}
#endif