acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
lv_example_meter_3.c (2028B)
      1 #include "../../lv_examples.h"
      2 #if LV_USE_METER && LV_BUILD_EXAMPLES
      3 
      4 static lv_obj_t * meter;
      5 
      6 static void set_value(void * indic, int32_t v)
      7 {
      8     lv_meter_set_indicator_end_value(meter, indic, v);
      9 }
     10 
     11 /**
     12  * A clock from a meter
     13  */
     14 void lv_example_meter_3(void)
     15 {
     16     meter = lv_meter_create(lv_scr_act());
     17     lv_obj_set_size(meter, 220, 220);
     18     lv_obj_center(meter);
     19 
     20     /*Create a scale for the minutes*/
     21     /*61 ticks in a 360 degrees range (the last and the first line overlaps)*/
     22     lv_meter_scale_t * scale_min = lv_meter_add_scale(meter);
     23     lv_meter_set_scale_ticks(meter, scale_min, 61, 1, 10, lv_palette_main(LV_PALETTE_GREY));
     24     lv_meter_set_scale_range(meter, scale_min, 0, 60, 360, 270);
     25 
     26     /*Create another scale for the hours. It's only visual and contains only major ticks*/
     27     lv_meter_scale_t * scale_hour = lv_meter_add_scale(meter);
     28     lv_meter_set_scale_ticks(meter, scale_hour, 12, 0, 0, lv_palette_main(LV_PALETTE_GREY));               /*12 ticks*/
     29     lv_meter_set_scale_major_ticks(meter, scale_hour, 1, 2, 20, lv_color_black(), 10);    /*Every tick is major*/
     30     lv_meter_set_scale_range(meter, scale_hour, 1, 12, 330, 300);       /*[1..12] values in an almost full circle*/
     31 
     32     LV_IMG_DECLARE(img_hand)
     33 
     34     /*Add a the hands from images*/
     35     lv_meter_indicator_t * indic_min = lv_meter_add_needle_img(meter, scale_min, &img_hand, 5, 5);
     36     lv_meter_indicator_t * indic_hour = lv_meter_add_needle_img(meter, scale_min, &img_hand, 5, 5);
     37 
     38     /*Create an animation to set the value*/
     39     lv_anim_t a;
     40     lv_anim_init(&a);
     41     lv_anim_set_exec_cb(&a, set_value);
     42     lv_anim_set_values(&a, 0, 60);
     43     lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
     44     lv_anim_set_time(&a, 2000);     /*2 sec for 1 turn of the minute hand (1 hour)*/
     45     lv_anim_set_var(&a, indic_min);
     46     lv_anim_start(&a);
     47 
     48     lv_anim_set_var(&a, indic_hour);
     49     lv_anim_set_time(&a, 24000);    /*24 sec for 1 turn of the hour hand*/
     50     lv_anim_set_values(&a, 0, 60);
     51     lv_anim_start(&a);
     52 }
     53 
     54 #endif