1 #include "../../lv_examples.h"
2 #if LV_USE_TABLE && LV_BUILD_EXAMPLES
3
4 #define ITEM_CNT 200
5
draw_event_cb(lv_event_t * e)6 static void draw_event_cb(lv_event_t * e)
7 {
8 lv_obj_t * obj = lv_event_get_target(e);
9 lv_obj_draw_part_dsc_t * dsc = lv_event_get_draw_part_dsc(e);
10 /*If the cells are drawn...*/
11 if(dsc->part == LV_PART_ITEMS) {
12 bool chk = lv_table_has_cell_ctrl(obj, dsc->id, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
13
14 lv_draw_rect_dsc_t rect_dsc;
15 lv_draw_rect_dsc_init(&rect_dsc);
16 rect_dsc.bg_color = chk ? lv_theme_get_color_primary(obj) : lv_palette_lighten(LV_PALETTE_GREY, 2);
17 rect_dsc.radius = LV_RADIUS_CIRCLE;
18
19 lv_area_t sw_area;
20 sw_area.x1 = dsc->draw_area->x2 - 50;
21 sw_area.x2 = sw_area.x1 + 40;
22 sw_area.y1 = dsc->draw_area->y1 + lv_area_get_height(dsc->draw_area) / 2 - 10;
23 sw_area.y2 = sw_area.y1 + 20;
24 lv_draw_rect(dsc->draw_ctx, &rect_dsc, &sw_area);
25
26 rect_dsc.bg_color = lv_color_white();
27 if(chk) {
28 sw_area.x2 -= 2;
29 sw_area.x1 = sw_area.x2 - 16;
30 }
31 else {
32 sw_area.x1 += 2;
33 sw_area.x2 = sw_area.x1 + 16;
34 }
35 sw_area.y1 += 2;
36 sw_area.y2 -= 2;
37 lv_draw_rect(dsc->draw_ctx, &rect_dsc, &sw_area);
38 }
39 }
40
change_event_cb(lv_event_t * e)41 static void change_event_cb(lv_event_t * e)
42 {
43 lv_obj_t * obj = lv_event_get_target(e);
44 uint16_t col;
45 uint16_t row;
46 lv_table_get_selected_cell(obj, &row, &col);
47 bool chk = lv_table_has_cell_ctrl(obj, row, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
48 if(chk) lv_table_clear_cell_ctrl(obj, row, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
49 else lv_table_add_cell_ctrl(obj, row, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
50 }
51
52 /**
53 * A very light-weighted list created from table
54 */
lv_example_table_2(void)55 void lv_example_table_2(void)
56 {
57 /*Measure memory usage*/
58 lv_mem_monitor_t mon1;
59 lv_mem_monitor(&mon1);
60
61 uint32_t t = lv_tick_get();
62
63 lv_obj_t * table = lv_table_create(lv_scr_act());
64
65 /*Set a smaller height to the table. It'll make it scrollable*/
66 lv_obj_set_size(table, LV_SIZE_CONTENT, 200);
67
68 lv_table_set_col_width(table, 0, 150);
69 lv_table_set_row_cnt(table, ITEM_CNT); /*Not required but avoids a lot of memory reallocation lv_table_set_set_value*/
70 lv_table_set_col_cnt(table, 1);
71
72 /*Don't make the cell pressed, we will draw something different in the event*/
73 lv_obj_remove_style(table, NULL, LV_PART_ITEMS | LV_STATE_PRESSED);
74
75 uint32_t i;
76 for(i = 0; i < ITEM_CNT; i++) {
77 lv_table_set_cell_value_fmt(table, i, 0, "Item %"LV_PRIu32, i + 1);
78 }
79
80 lv_obj_align(table, LV_ALIGN_CENTER, 0, -20);
81
82 /*Add an event callback to to apply some custom drawing*/
83 lv_obj_add_event_cb(table, draw_event_cb, LV_EVENT_DRAW_PART_END, NULL);
84 lv_obj_add_event_cb(table, change_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
85
86 lv_mem_monitor_t mon2;
87 lv_mem_monitor(&mon2);
88
89 uint32_t mem_used = mon1.free_size - mon2.free_size;
90
91 uint32_t elaps = lv_tick_elaps(t);
92
93 lv_obj_t * label = lv_label_create(lv_scr_act());
94 lv_label_set_text_fmt(label, "%"LV_PRIu32" items were created in %"LV_PRIu32" ms\n"
95 "using %"LV_PRIu32" bytes of memory",
96 ITEM_CNT, elaps, mem_used);
97
98 lv_obj_align(label, LV_ALIGN_BOTTOM_MID, 0, -10);
99
100 }
101
102 #endif
103
