acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
lv_example_list_2.c (5400B)
      1 #include <stdlib.h>
      2 
      3 
      4 #include "../../lv_examples.h"
      5 #if LV_USE_LIST && LV_BUILD_EXAMPLES
      6 
      7 static lv_obj_t * list1;
      8 static lv_obj_t * list2;
      9 
     10 static lv_obj_t * currentButton = NULL;
     11 
     12 static void event_handler(lv_event_t * e)
     13 {
     14     lv_event_code_t code = lv_event_get_code(e);
     15     lv_obj_t * obj = lv_event_get_target(e);
     16     if(code == LV_EVENT_CLICKED) {
     17         LV_LOG_USER("Clicked: %s", lv_list_get_btn_text(list1, obj));
     18 
     19         if(currentButton == obj) {
     20             currentButton = NULL;
     21         }
     22         else {
     23             currentButton = obj;
     24         }
     25         lv_obj_t * parent = lv_obj_get_parent(obj);
     26         uint32_t i;
     27         for(i = 0; i < lv_obj_get_child_cnt(parent); i++) {
     28             lv_obj_t * child = lv_obj_get_child(parent, i);
     29             if(child == currentButton) {
     30                 lv_obj_add_state(child, LV_STATE_CHECKED);
     31             }
     32             else {
     33                 lv_obj_clear_state(child, LV_STATE_CHECKED);
     34             }
     35         }
     36     }
     37 }
     38 
     39 static void event_handler_top(lv_event_t * e)
     40 {
     41     lv_event_code_t code = lv_event_get_code(e);
     42     if(code == LV_EVENT_CLICKED) {
     43         if(currentButton == NULL) return;
     44         lv_obj_move_background(currentButton);
     45         lv_obj_scroll_to_view(currentButton, LV_ANIM_ON);
     46     }
     47 }
     48 
     49 static void event_handler_up(lv_event_t * e)
     50 {
     51     lv_event_code_t code = lv_event_get_code(e);
     52     if((code == LV_EVENT_CLICKED) || (code == LV_EVENT_LONG_PRESSED_REPEAT)) {
     53         if(currentButton == NULL) return;
     54         uint32_t index = lv_obj_get_index(currentButton);
     55         if(index <= 0) return;
     56         lv_obj_move_to_index(currentButton, index - 1);
     57         lv_obj_scroll_to_view(currentButton, LV_ANIM_ON);
     58     }
     59 }
     60 
     61 static void event_handler_center(lv_event_t * e)
     62 {
     63     const lv_event_code_t code = lv_event_get_code(e);
     64     if((code == LV_EVENT_CLICKED) || (code == LV_EVENT_LONG_PRESSED_REPEAT)) {
     65         if(currentButton == NULL) return;
     66 
     67         lv_obj_t * parent = lv_obj_get_parent(currentButton);
     68         const uint32_t pos = lv_obj_get_child_cnt(parent) / 2;
     69 
     70         lv_obj_move_to_index(currentButton, pos);
     71 
     72         lv_obj_scroll_to_view(currentButton, LV_ANIM_ON);
     73     }
     74 }
     75 
     76 static void event_handler_dn(lv_event_t * e)
     77 {
     78     const lv_event_code_t code = lv_event_get_code(e);
     79     if((code == LV_EVENT_CLICKED) || (code == LV_EVENT_LONG_PRESSED_REPEAT)) {
     80         if(currentButton == NULL) return;
     81         const uint32_t index = lv_obj_get_index(currentButton);
     82 
     83         lv_obj_move_to_index(currentButton, index + 1);
     84         lv_obj_scroll_to_view(currentButton, LV_ANIM_ON);
     85     }
     86 }
     87 
     88 static void event_handler_bottom(lv_event_t * e)
     89 {
     90     const lv_event_code_t code = lv_event_get_code(e);
     91     if(code == LV_EVENT_CLICKED) {
     92         if(currentButton == NULL) return;
     93         lv_obj_move_foreground(currentButton);
     94         lv_obj_scroll_to_view(currentButton, LV_ANIM_ON);
     95     }
     96 }
     97 
     98 static void event_handler_swap(lv_event_t * e)
     99 {
    100     const lv_event_code_t code = lv_event_get_code(e);
    101     // lv_obj_t* obj = lv_event_get_target(e);
    102     if((code == LV_EVENT_CLICKED) || (code == LV_EVENT_LONG_PRESSED_REPEAT)) {
    103         uint32_t cnt = lv_obj_get_child_cnt(list1);
    104         for(int i = 0; i < 100; i++)
    105             if(cnt > 1) {
    106                 lv_obj_t * obj = lv_obj_get_child(list1, rand() % cnt);
    107                 lv_obj_move_to_index(obj, rand() % cnt);
    108                 if(currentButton != NULL) {
    109                     lv_obj_scroll_to_view(currentButton, LV_ANIM_ON);
    110                 }
    111             }
    112     }
    113 }
    114 
    115 void lv_example_list_2(void)
    116 {
    117     /*Create a list*/
    118     list1 = lv_list_create(lv_scr_act());
    119     lv_obj_set_size(list1, lv_pct(60), lv_pct(100));
    120     lv_obj_set_style_pad_row(list1, 5, 0);
    121 
    122     /*Add buttons to the list*/
    123     lv_obj_t * btn;
    124     int i;
    125     for(i = 0; i < 15; i++) {
    126         btn = lv_btn_create(list1);
    127         lv_obj_set_width(btn, lv_pct(50));
    128         lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
    129 
    130         lv_obj_t * lab = lv_label_create(btn);
    131         lv_label_set_text_fmt(lab, "Item %d", i);
    132     }
    133 
    134     /*Select the first button by default*/
    135     currentButton = lv_obj_get_child(list1, 0);
    136     lv_obj_add_state(currentButton, LV_STATE_CHECKED);
    137 
    138     /*Create a second list with up and down buttons*/
    139     list2 = lv_list_create(lv_scr_act());
    140     lv_obj_set_size(list2, lv_pct(40), lv_pct(100));
    141     lv_obj_align(list2, LV_ALIGN_TOP_RIGHT, 0, 0);
    142     lv_obj_set_flex_flow(list2, LV_FLEX_FLOW_COLUMN);
    143 
    144     btn = lv_list_add_btn(list2, NULL, "Top");
    145     lv_obj_add_event_cb(btn, event_handler_top, LV_EVENT_ALL, NULL);
    146     lv_group_remove_obj(btn);
    147 
    148     btn = lv_list_add_btn(list2, LV_SYMBOL_UP, "Up");
    149     lv_obj_add_event_cb(btn, event_handler_up, LV_EVENT_ALL, NULL);
    150     lv_group_remove_obj(btn);
    151 
    152     btn = lv_list_add_btn(list2, LV_SYMBOL_LEFT, "Center");
    153     lv_obj_add_event_cb(btn, event_handler_center, LV_EVENT_ALL, NULL);
    154     lv_group_remove_obj(btn);
    155 
    156     btn = lv_list_add_btn(list2, LV_SYMBOL_DOWN, "Down");
    157     lv_obj_add_event_cb(btn, event_handler_dn, LV_EVENT_ALL, NULL);
    158     lv_group_remove_obj(btn);
    159 
    160     btn = lv_list_add_btn(list2, NULL, "Bottom");
    161     lv_obj_add_event_cb(btn, event_handler_bottom, LV_EVENT_ALL, NULL);
    162     lv_group_remove_obj(btn);
    163 
    164     btn = lv_list_add_btn(list2, LV_SYMBOL_SHUFFLE, "Shuffle");
    165     lv_obj_add_event_cb(btn, event_handler_swap, LV_EVENT_ALL, NULL);
    166     lv_group_remove_obj(btn);
    167 }
    168 
    169 #endif