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
10 lv_draw_task_t * draw_task = lv_event_get_draw_task(e);
11 lv_draw_dsc_base_t * base_dsc = lv_draw_task_get_draw_dsc(draw_task);
12 /*If the cells are drawn...*/
13 if(base_dsc->part == LV_PART_ITEMS && lv_draw_task_get_type(draw_task) == LV_DRAW_TASK_TYPE_FILL) {
14 /*Draw the background*/
15 bool chk = lv_table_has_cell_ctrl(obj, base_dsc->id1, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
16 lv_draw_rect_dsc_t rect_dsc;
17 lv_draw_rect_dsc_init(&rect_dsc);
18 rect_dsc.bg_color = chk ? lv_theme_get_color_primary(obj) : lv_palette_lighten(LV_PALETTE_GREY, 2);
19 rect_dsc.radius = LV_RADIUS_CIRCLE;
20
21 lv_area_t sw_area;
22 sw_area.x1 = 0;
23 sw_area.x2 = 40;
24 sw_area.y1 = 0;
25 sw_area.y2 = 24;
26 lv_area_t draw_task_area;
27 lv_draw_task_get_area(draw_task, &draw_task_area);
28 lv_area_align(&draw_task_area, &sw_area, LV_ALIGN_RIGHT_MID, -15, 0);
29 lv_draw_rect(base_dsc->layer, &rect_dsc, &sw_area);
30
31 /*Draw the knob*/
32 rect_dsc.bg_color = lv_color_white();
33 lv_area_t knob_area;
34 knob_area.x1 = 0;
35 knob_area.x2 = 18;
36 knob_area.y1 = 0;
37 knob_area.y2 = 18;
38 if(chk) {
39 lv_area_align(&sw_area, &knob_area, LV_ALIGN_RIGHT_MID, -3, 0);
40 }
41 else {
42 lv_area_align(&sw_area, &knob_area, LV_ALIGN_LEFT_MID, 3, 0);
43 }
44 lv_draw_rect(base_dsc->layer, &rect_dsc, &knob_area);
45 }
46 }
47
change_event_cb(lv_event_t * e)48 static void change_event_cb(lv_event_t * e)
49 {
50 lv_obj_t * obj = lv_event_get_target(e);
51 uint32_t col;
52 uint32_t row;
53 lv_table_get_selected_cell(obj, &row, &col);
54 bool chk = lv_table_has_cell_ctrl(obj, row, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
55 if(chk) lv_table_clear_cell_ctrl(obj, row, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
56 else lv_table_add_cell_ctrl(obj, row, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
57 }
58
59 /**
60 * A very light-weighted list created from table
61 */
lv_example_table_2(void)62 void lv_example_table_2(void)
63 {
64 /*Measure memory usage*/
65 lv_mem_monitor_t mon1;
66 lv_mem_monitor(&mon1);
67
68 uint32_t t = lv_tick_get();
69
70 lv_obj_t * table = lv_table_create(lv_screen_active());
71
72 /*Set a smaller height to the table. It'll make it scrollable*/
73 lv_obj_set_size(table, LV_SIZE_CONTENT, 200);
74
75 lv_table_set_column_width(table, 0, 150);
76 lv_table_set_row_count(table, ITEM_CNT); /*Not required but avoids a lot of memory reallocation lv_table_set_set_value*/
77 lv_table_set_column_count(table, 1);
78
79 /*Don't make the cell pressed, we will draw something different in the event*/
80 lv_obj_remove_style(table, NULL, LV_PART_ITEMS | LV_STATE_PRESSED);
81
82 uint32_t i;
83 for(i = 0; i < ITEM_CNT; i++) {
84 lv_table_set_cell_value_fmt(table, i, 0, "Item %"LV_PRIu32, i + 1);
85 }
86
87 lv_obj_align(table, LV_ALIGN_CENTER, 0, -20);
88
89 /*Add an event callback to to apply some custom drawing*/
90 lv_obj_add_event_cb(table, draw_event_cb, LV_EVENT_DRAW_TASK_ADDED, NULL);
91 lv_obj_add_event_cb(table, change_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
92 lv_obj_add_flag(table, LV_OBJ_FLAG_SEND_DRAW_TASK_EVENTS);
93
94 lv_mem_monitor_t mon2;
95 lv_mem_monitor(&mon2);
96
97 size_t mem_used = mon1.free_size - mon2.free_size;
98
99 uint32_t elaps = lv_tick_elaps(t);
100
101 lv_obj_t * label = lv_label_create(lv_screen_active());
102 lv_label_set_text_fmt(label, "%"LV_PRIu32" items were created in %"LV_PRIu32" ms\n"
103 "using %zu bytes of memory",
104 (uint32_t)ITEM_CNT, elaps, mem_used);
105
106 lv_obj_align(label, LV_ALIGN_BOTTOM_MID, 0, -10);
107
108 }
109
110 #endif
111
