acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
lv_example_bar_6.c (2071B)
      1 #include "../../lv_examples.h"
      2 #if LV_USE_BAR && LV_BUILD_EXAMPLES
      3 
      4 static void set_value(void * bar, int32_t v)
      5 {
      6     lv_bar_set_value(bar, v, LV_ANIM_OFF);
      7 }
      8 
      9 static void event_cb(lv_event_t * e)
     10 {
     11     lv_obj_draw_part_dsc_t * dsc = lv_event_get_param(e);
     12     if(dsc->part != LV_PART_INDICATOR) return;
     13 
     14     lv_obj_t * obj = lv_event_get_target(e);
     15 
     16     lv_draw_label_dsc_t label_dsc;
     17     lv_draw_label_dsc_init(&label_dsc);
     18     label_dsc.font = LV_FONT_DEFAULT;
     19 
     20     char buf[8];
     21     lv_snprintf(buf, sizeof(buf), "%d", (int)lv_bar_get_value(obj));
     22 
     23     lv_point_t txt_size;
     24     lv_txt_get_size(&txt_size, buf, label_dsc.font, label_dsc.letter_space, label_dsc.line_space, LV_COORD_MAX,
     25                     label_dsc.flag);
     26 
     27     lv_area_t txt_area;
     28     /*If the indicator is long enough put the text inside on the right*/
     29     if(lv_area_get_width(dsc->draw_area) > txt_size.x + 20) {
     30         txt_area.x2 = dsc->draw_area->x2 - 5;
     31         txt_area.x1 = txt_area.x2 - txt_size.x + 1;
     32         label_dsc.color = lv_color_white();
     33     }
     34     /*If the indicator is still short put the text out of it on the right*/
     35     else {
     36         txt_area.x1 = dsc->draw_area->x2 + 5;
     37         txt_area.x2 = txt_area.x1 + txt_size.x - 1;
     38         label_dsc.color = lv_color_black();
     39     }
     40 
     41     txt_area.y1 = dsc->draw_area->y1 + (lv_area_get_height(dsc->draw_area) - txt_size.y) / 2;
     42     txt_area.y2 = txt_area.y1 + txt_size.y - 1;
     43 
     44     lv_draw_label(dsc->draw_ctx, &label_dsc, &txt_area, buf, NULL);
     45 }
     46 
     47 /**
     48  * Custom drawer on the bar to display the current value
     49  */
     50 void lv_example_bar_6(void)
     51 {
     52     lv_obj_t * bar = lv_bar_create(lv_scr_act());
     53     lv_obj_add_event_cb(bar, event_cb, LV_EVENT_DRAW_PART_END, NULL);
     54     lv_obj_set_size(bar, 200, 20);
     55     lv_obj_center(bar);
     56 
     57     lv_anim_t a;
     58     lv_anim_init(&a);
     59     lv_anim_set_var(&a, bar);
     60     lv_anim_set_values(&a, 0, 100);
     61     lv_anim_set_exec_cb(&a, set_value);
     62     lv_anim_set_time(&a, 2000);
     63     lv_anim_set_playback_time(&a, 2000);
     64     lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
     65     lv_anim_start(&a);
     66 
     67 }
     68 
     69 #endif