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#include "../../lv_examples.h"
#if LV_USE_TABLE && LV_BUILD_EXAMPLES
#define ITEM_CNT 200
static void draw_event_cb(lv_event_t * e)
{
lv_obj_t * obj = lv_event_get_target(e);
lv_draw_task_t * draw_task = lv_event_get_draw_task(e);
lv_draw_dsc_base_t * base_dsc = lv_draw_task_get_draw_dsc(draw_task);
/*If the cells are drawn...*/
if(base_dsc->part == LV_PART_ITEMS && lv_draw_task_get_type(draw_task) == LV_DRAW_TASK_TYPE_FILL) {
/*Draw the background*/
bool chk = lv_table_has_cell_ctrl(obj, base_dsc->id1, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
lv_draw_rect_dsc_t rect_dsc;
lv_draw_rect_dsc_init(&rect_dsc);
rect_dsc.bg_color = chk ? lv_theme_get_color_primary(obj) : lv_palette_lighten(LV_PALETTE_GREY, 2);
rect_dsc.radius = LV_RADIUS_CIRCLE;
lv_area_t sw_area;
sw_area.x1 = 0;
sw_area.x2 = 40;
sw_area.y1 = 0;
sw_area.y2 = 24;
lv_area_t draw_task_area;
lv_draw_task_get_area(draw_task, &draw_task_area);
lv_area_align(&draw_task_area, &sw_area, LV_ALIGN_RIGHT_MID, -15, 0);
lv_draw_rect(base_dsc->layer, &rect_dsc, &sw_area);
/*Draw the knob*/
rect_dsc.bg_color = lv_color_white();
lv_area_t knob_area;
knob_area.x1 = 0;
knob_area.x2 = 18;
knob_area.y1 = 0;
knob_area.y2 = 18;
if(chk) {
lv_area_align(&sw_area, &knob_area, LV_ALIGN_RIGHT_MID, -3, 0);
}
else {
lv_area_align(&sw_area, &knob_area, LV_ALIGN_LEFT_MID, 3, 0);
}
lv_draw_rect(base_dsc->layer, &rect_dsc, &knob_area);
}
}
static void change_event_cb(lv_event_t * e)
{
lv_obj_t * obj = lv_event_get_target(e);
uint32_t col;
uint32_t row;
lv_table_get_selected_cell(obj, &row, &col);
bool chk = lv_table_has_cell_ctrl(obj, row, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
if(chk) lv_table_clear_cell_ctrl(obj, row, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
else lv_table_add_cell_ctrl(obj, row, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
}
/**
* A very light-weighted list created from table
*/
void lv_example_table_2(void)
{
/*Measure memory usage*/
lv_mem_monitor_t mon1;
lv_mem_monitor(&mon1);
uint32_t t = lv_tick_get();
lv_obj_t * table = lv_table_create(lv_screen_active());
/*Set a smaller height to the table. It'll make it scrollable*/
lv_obj_set_size(table, LV_SIZE_CONTENT, 200);
lv_table_set_column_width(table, 0, 150);
lv_table_set_row_count(table, ITEM_CNT); /*Not required but avoids a lot of memory reallocation lv_table_set_set_value*/
lv_table_set_column_count(table, 1);
/*Don't make the cell pressed, we will draw something different in the event*/
lv_obj_remove_style(table, NULL, LV_PART_ITEMS | LV_STATE_PRESSED);
uint32_t i;
for(i = 0; i < ITEM_CNT; i++) {
lv_table_set_cell_value_fmt(table, i, 0, "Item %"LV_PRIu32, i + 1);
}
lv_obj_align(table, LV_ALIGN_CENTER, 0, -20);
/*Add an event callback to to apply some custom drawing*/
lv_obj_add_event_cb(table, draw_event_cb, LV_EVENT_DRAW_TASK_ADDED, NULL);
lv_obj_add_event_cb(table, change_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
lv_obj_add_flag(table, LV_OBJ_FLAG_SEND_DRAW_TASK_EVENTS);
lv_mem_monitor_t mon2;
lv_mem_monitor(&mon2);
size_t mem_used = mon1.free_size - mon2.free_size;
uint32_t elaps = lv_tick_elaps(t);
lv_obj_t * label = lv_label_create(lv_screen_active());
lv_label_set_text_fmt(label, "%"LV_PRIu32" items were created in %"LV_PRIu32" ms\n"
"using %zu bytes of memory",
(uint32_t)ITEM_CNT, elaps, mem_used);
lv_obj_align(label, LV_ALIGN_BOTTOM_MID, 0, -10);
}
#endif
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