acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
lv_example_roller_2.c (2386B)
      1 #include "../../lv_examples.h"
      2 #if LV_USE_ROLLER && LV_FONT_MONTSERRAT_22 && LV_BUILD_EXAMPLES
      3 
      4 static void event_handler(lv_event_t * e)
      5 {
      6     lv_event_code_t code = lv_event_get_code(e);
      7     lv_obj_t * obj = lv_event_get_target(e);
      8     if(code == LV_EVENT_VALUE_CHANGED) {
      9         char buf[32];
     10         lv_roller_get_selected_str(obj, buf, sizeof(buf));
     11         LV_LOG_USER("Selected value: %s", buf);
     12     }
     13 }
     14 
     15 /**
     16  * Roller with various alignments and larger text in the selected area
     17  */
     18 void lv_example_roller_2(void)
     19 {
     20     /*A style to make the selected option larger*/
     21     static lv_style_t style_sel;
     22     lv_style_init(&style_sel);
     23     lv_style_set_text_font(&style_sel, &lv_font_montserrat_22);
     24 
     25     const char * opts = "1\n2\n3\n4\n5\n6\n7\n8\n9\n10";
     26     lv_obj_t * roller;
     27 
     28     /*A roller on the left with left aligned text, and custom width*/
     29     roller = lv_roller_create(lv_scr_act());
     30     lv_roller_set_options(roller, opts, LV_ROLLER_MODE_NORMAL);
     31     lv_roller_set_visible_row_count(roller, 2);
     32     lv_obj_set_width(roller, 100);
     33     lv_obj_add_style(roller, &style_sel, LV_PART_SELECTED);
     34     lv_obj_set_style_text_align(roller, LV_TEXT_ALIGN_LEFT, 0);
     35     lv_obj_align(roller, LV_ALIGN_LEFT_MID, 10, 0);
     36     lv_obj_add_event_cb(roller, event_handler, LV_EVENT_ALL, NULL);
     37     lv_roller_set_selected(roller, 2, LV_ANIM_OFF);
     38 
     39     /*A roller on the middle with center aligned text, and auto (default) width*/
     40     roller = lv_roller_create(lv_scr_act());
     41     lv_roller_set_options(roller, opts, LV_ROLLER_MODE_NORMAL);
     42     lv_roller_set_visible_row_count(roller, 3);
     43     lv_obj_add_style(roller, &style_sel, LV_PART_SELECTED);
     44     lv_obj_align(roller, LV_ALIGN_CENTER, 0, 0);
     45     lv_obj_add_event_cb(roller, event_handler, LV_EVENT_ALL, NULL);
     46     lv_roller_set_selected(roller, 5, LV_ANIM_OFF);
     47 
     48     /*A roller on the right with right aligned text, and custom width*/
     49     roller = lv_roller_create(lv_scr_act());
     50     lv_roller_set_options(roller, opts, LV_ROLLER_MODE_NORMAL);
     51     lv_roller_set_visible_row_count(roller, 4);
     52     lv_obj_set_width(roller, 80);
     53     lv_obj_add_style(roller, &style_sel, LV_PART_SELECTED);
     54     lv_obj_set_style_text_align(roller, LV_TEXT_ALIGN_RIGHT, 0);
     55     lv_obj_align(roller, LV_ALIGN_RIGHT_MID, -10, 0);
     56     lv_obj_add_event_cb(roller, event_handler, LV_EVENT_ALL, NULL);
     57     lv_roller_set_selected(roller, 8, LV_ANIM_OFF);
     58 }
     59 
     60 #endif