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A39模拟器

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liulin
2024-03-07 11:03:18 +08:00
parent cb2cc0d66f
commit 33e6eb45b3
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26
MXC-A39/lvgl/examples/widgets/btn/index.rst Normal file
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C
^
Simple Buttons
""""""""""""""""
.. lv_example:: widgets/btn/lv_example_btn_1
:language: c
Styling buttons
""""""""""""""""
.. lv_example:: widgets/btn/lv_example_btn_2
:language: c
Gummy button
""""""""""""""""
.. lv_example:: widgets/btn/lv_example_btn_3
:language: c
MicroPython
^^^^^^^^^^^
No examples yet.

38
MXC-A39/lvgl/examples/widgets/btn/lv_example_btn_1.c Normal file
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#include "../../lv_examples.h"
#if LV_USE_BTN && LV_BUILD_EXAMPLES
static void event_handler(lv_event_t * e)
{
lv_event_code_t code = lv_event_get_code(e);
if(code == LV_EVENT_CLICKED) {
LV_LOG_USER("Clicked");
}
else if(code == LV_EVENT_VALUE_CHANGED) {
LV_LOG_USER("Toggled");
}
}
void lv_example_btn_1(void)
{
lv_obj_t * label;
lv_obj_t * btn1 = lv_btn_create(lv_scr_act());
lv_obj_add_event_cb(btn1, event_handler, LV_EVENT_ALL, NULL);
lv_obj_align(btn1, LV_ALIGN_CENTER, 0, -40);
label = lv_label_create(btn1);
lv_label_set_text(label, "Button");
lv_obj_center(label);
lv_obj_t * btn2 = lv_btn_create(lv_scr_act());
lv_obj_add_event_cb(btn2, event_handler, LV_EVENT_ALL, NULL);
lv_obj_align(btn2, LV_ALIGN_CENTER, 0, 40);
lv_obj_add_flag(btn2, LV_OBJ_FLAG_CHECKABLE);
lv_obj_set_height(btn2, LV_SIZE_CONTENT);
label = lv_label_create(btn2);
lv_label_set_text(label, "Toggle");
lv_obj_center(label);
}
#endif

21
MXC-A39/lvgl/examples/widgets/btn/lv_example_btn_1.py Normal file
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def event_handler(obj, event):
if event == lv.EVENT.CLICKED:
print("Clicked")
btn1 = lv.btn(lv.scr_act())
btn1.set_event_cb(event_handler)
btn1.align(None, lv.ALIGN.CENTER, 0, -40)
label = lv.label(btn1)
label.set_text("Button")
btn2 = lv.btn(lv.scr_act())
# callback can be lambda:
btn2.set_event_cb(lambda obj, event: print("Toggled") if event == lv.EVENT.VALUE_CHANGED else None)
btn2.align(None, lv.ALIGN.CENTER, 0, 40)
btn2.set_toggle(True)
btn2.toggle()
btn2.set_fit2(lv.FIT.NONE, lv.FIT.TIGHT)
label = lv.label(btn2)
label.set_text("Toggled")

65
MXC-A39/lvgl/examples/widgets/btn/lv_example_btn_2.c Normal file
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#include "../../lv_examples.h"
#if LV_USE_BTN && LV_BUILD_EXAMPLES
/**
* Style a button from scratch
*/
void lv_example_btn_2(void)
{
/*Init the style for the default state*/
static lv_style_t style;
lv_style_init(&style);
lv_style_set_radius(&style, 3);
lv_style_set_bg_opa(&style, LV_OPA_100);
lv_style_set_bg_color(&style, lv_palette_main(LV_PALETTE_BLUE));
lv_style_set_bg_grad_color(&style, lv_palette_darken(LV_PALETTE_BLUE, 2));
lv_style_set_bg_grad_dir(&style, LV_GRAD_DIR_VER);
lv_style_set_border_opa(&style, LV_OPA_40);
lv_style_set_border_width(&style, 2);
lv_style_set_border_color(&style, lv_palette_main(LV_PALETTE_GREY));
lv_style_set_shadow_width(&style, 8);
lv_style_set_shadow_color(&style, lv_palette_main(LV_PALETTE_GREY));
lv_style_set_shadow_ofs_y(&style, 8);
lv_style_set_outline_opa(&style, LV_OPA_COVER);
lv_style_set_outline_color(&style, lv_palette_main(LV_PALETTE_BLUE));
lv_style_set_text_color(&style, lv_color_white());
lv_style_set_pad_all(&style, 10);
/*Init the pressed style*/
static lv_style_t style_pr;
lv_style_init(&style_pr);
/*Ad a large outline when pressed*/
lv_style_set_outline_width(&style_pr, 30);
lv_style_set_outline_opa(&style_pr, LV_OPA_TRANSP);
lv_style_set_translate_y(&style_pr, 5);
lv_style_set_shadow_ofs_y(&style_pr, 3);
lv_style_set_bg_color(&style_pr, lv_palette_darken(LV_PALETTE_BLUE, 2));
lv_style_set_bg_grad_color(&style_pr, lv_palette_darken(LV_PALETTE_BLUE, 4));
/*Add a transition to the the outline*/
static lv_style_transition_dsc_t trans;
static lv_style_prop_t props[] = {LV_STYLE_OUTLINE_WIDTH, LV_STYLE_OUTLINE_OPA, 0};
lv_style_transition_dsc_init(&trans, props, lv_anim_path_linear, 300, 0, NULL);
lv_style_set_transition(&style_pr, &trans);
lv_obj_t * btn1 = lv_btn_create(lv_scr_act());
lv_obj_remove_style_all(btn1); /*Remove the style coming from the theme*/
lv_obj_add_style(btn1, &style, 0);
lv_obj_add_style(btn1, &style_pr, LV_STATE_PRESSED);
lv_obj_set_size(btn1, LV_SIZE_CONTENT, LV_SIZE_CONTENT);
lv_obj_center(btn1);
lv_obj_t * label = lv_label_create(btn1);
lv_label_set_text(label, "Button");
lv_obj_center(label);
}
#endif

45
MXC-A39/lvgl/examples/widgets/btn/lv_example_btn_3.c Normal file
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#include "../../lv_examples.h"
#if LV_BUILD_EXAMPLES && LV_USE_BTN
/**
* Create a style transition on a button to act like a gum when clicked
*/
void lv_example_btn_3(void)
{
/*Properties to transition*/
static lv_style_prop_t props[] = {
LV_STYLE_TRANSFORM_WIDTH, LV_STYLE_TRANSFORM_HEIGHT, LV_STYLE_TEXT_LETTER_SPACE, 0
};
/*Transition descriptor when going back to the default state.
*Add some delay to be sure the press transition is visible even if the press was very short*/
static lv_style_transition_dsc_t transition_dsc_def;
lv_style_transition_dsc_init(&transition_dsc_def, props, lv_anim_path_overshoot, 250, 100, NULL);
/*Transition descriptor when going to pressed state.
*No delay, go to presses state immediately*/
static lv_style_transition_dsc_t transition_dsc_pr;
lv_style_transition_dsc_init(&transition_dsc_pr, props, lv_anim_path_ease_in_out, 250, 0, NULL);
/*Add only the new transition to he default state*/
static lv_style_t style_def;
lv_style_init(&style_def);
lv_style_set_transition(&style_def, &transition_dsc_def);
/*Add the transition and some transformation to the presses state.*/
static lv_style_t style_pr;
lv_style_init(&style_pr);
lv_style_set_transform_width(&style_pr, 10);
lv_style_set_transform_height(&style_pr, -10);
lv_style_set_text_letter_space(&style_pr, 10);
lv_style_set_transition(&style_pr, &transition_dsc_pr);
lv_obj_t * btn1 = lv_btn_create(lv_scr_act());
lv_obj_align(btn1, LV_ALIGN_CENTER, 0, -80);
lv_obj_add_style(btn1, &style_pr, LV_STATE_PRESSED);
lv_obj_add_style(btn1, &style_def, 0);
lv_obj_t * label = lv_label_create(btn1);
lv_label_set_text(label, "Gum");
}
#endif