You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
2 years ago
|
#include "../../lv_examples.h"
|
||
|
|
#if LV_USE_BAR && LV_BUILD_EXAMPLES
|
||
|
|
|
||
|
|
static void set_value(void * bar, int32_t v)
|
||
|
|
{
|
||
|
|
lv_bar_set_value(bar, v, LV_ANIM_OFF);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void event_cb(lv_event_t * e)
|
||
|
|
{
|
||
|
|
lv_obj_draw_part_dsc_t * dsc = lv_event_get_draw_part_dsc(e);
|
||
|
|
if(dsc->part != LV_PART_INDICATOR) return;
|
||
|
|
|
||
|
|
lv_obj_t * obj = lv_event_get_target(e);
|
||
|
|
|
||
|
|
lv_draw_label_dsc_t label_dsc;
|
||
|
|
lv_draw_label_dsc_init(&label_dsc);
|
||
|
|
label_dsc.font = LV_FONT_DEFAULT;
|
||
|
|
|
||
|
|
char buf[8];
|
||
|
|
lv_snprintf(buf, sizeof(buf), "%d", (int)lv_bar_get_value(obj));
|
||
|
|
|
||
|
|
lv_point_t txt_size;
|
||
|
|
lv_txt_get_size(&txt_size, buf, label_dsc.font, label_dsc.letter_space, label_dsc.line_space, LV_COORD_MAX,
|
||
|
|
label_dsc.flag);
|
||
|
|
|
||
|
|
lv_area_t txt_area;
|
||
|
|
/*If the indicator is long enough put the text inside on the right*/
|
||
|
|
if(lv_area_get_width(dsc->draw_area) > txt_size.x + 20) {
|
||
|
|
txt_area.x2 = dsc->draw_area->x2 - 5;
|
||
|
|
txt_area.x1 = txt_area.x2 - txt_size.x + 1;
|
||
|
|
label_dsc.color = lv_color_white();
|
||
|
|
}
|
||
|
|
/*If the indicator is still short put the text out of it on the right*/
|
||
|
|
else {
|
||
|
|
txt_area.x1 = dsc->draw_area->x2 + 5;
|
||
|
|
txt_area.x2 = txt_area.x1 + txt_size.x - 1;
|
||
|
|
label_dsc.color = lv_color_black();
|
||
|
|
}
|
||
|
|
|
||
|
|
txt_area.y1 = dsc->draw_area->y1 + (lv_area_get_height(dsc->draw_area) - txt_size.y) / 2;
|
||
|
|
txt_area.y2 = txt_area.y1 + txt_size.y - 1;
|
||
|
|
|
||
|
|
lv_draw_label(dsc->draw_ctx, &label_dsc, &txt_area, buf, NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Custom drawer on the bar to display the current value
|
||
|
|
*/
|
||
|
|
void lv_example_bar_6(void)
|
||
|
|
{
|
||
|
|
lv_obj_t * bar = lv_bar_create(lv_scr_act());
|
||
|
|
lv_obj_add_event_cb(bar, event_cb, LV_EVENT_DRAW_PART_END, NULL);
|
||
|
|
lv_obj_set_size(bar, 200, 20);
|
||
|
|
lv_obj_center(bar);
|
||
|
|
|
||
|
|
lv_anim_t a;
|
||
|
|
lv_anim_init(&a);
|
||
|
|
lv_anim_set_var(&a, bar);
|
||
|
|
lv_anim_set_values(&a, 0, 100);
|
||
|
|
lv_anim_set_exec_cb(&a, set_value);
|
||
|
|
lv_anim_set_time(&a, 2000);
|
||
|
|
lv_anim_set_playback_time(&a, 2000);
|
||
|
|
lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
|
||
|
|
lv_anim_start(&a);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|