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104 lines
3.3 KiB
C
104 lines
3.3 KiB
C
2 years ago
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#include "../../lv_examples.h"
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#if LV_USE_TABLE && LV_BUILD_EXAMPLES
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#define ITEM_CNT 200
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static void draw_event_cb(lv_event_t * e)
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{
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lv_obj_t * obj = lv_event_get_target(e);
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lv_obj_draw_part_dsc_t * dsc = lv_event_get_draw_part_dsc(e);
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/*If the cells are drawn...*/
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if(dsc->part == LV_PART_ITEMS) {
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bool chk = lv_table_has_cell_ctrl(obj, dsc->id, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
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lv_draw_rect_dsc_t rect_dsc;
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lv_draw_rect_dsc_init(&rect_dsc);
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rect_dsc.bg_color = chk ? lv_theme_get_color_primary(obj) : lv_palette_lighten(LV_PALETTE_GREY, 2);
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rect_dsc.radius = LV_RADIUS_CIRCLE;
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lv_area_t sw_area;
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sw_area.x1 = dsc->draw_area->x2 - 50;
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sw_area.x2 = sw_area.x1 + 40;
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sw_area.y1 = dsc->draw_area->y1 + lv_area_get_height(dsc->draw_area) / 2 - 10;
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sw_area.y2 = sw_area.y1 + 20;
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lv_draw_rect(dsc->draw_ctx, &rect_dsc, &sw_area);
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rect_dsc.bg_color = lv_color_white();
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if(chk) {
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sw_area.x2 -= 2;
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sw_area.x1 = sw_area.x2 - 16;
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}
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else {
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sw_area.x1 += 2;
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sw_area.x2 = sw_area.x1 + 16;
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}
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sw_area.y1 += 2;
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sw_area.y2 -= 2;
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lv_draw_rect(dsc->draw_ctx, &rect_dsc, &sw_area);
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}
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}
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static void change_event_cb(lv_event_t * e)
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{
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lv_obj_t * obj = lv_event_get_target(e);
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uint16_t col;
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uint16_t row;
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lv_table_get_selected_cell(obj, &row, &col);
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bool chk = lv_table_has_cell_ctrl(obj, row, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
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if(chk) lv_table_clear_cell_ctrl(obj, row, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
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else lv_table_add_cell_ctrl(obj, row, 0, LV_TABLE_CELL_CTRL_CUSTOM_1);
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}
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/**
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* A very light-weighted list created from table
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*/
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void lv_example_table_2(void)
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{
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/*Measure memory usage*/
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lv_mem_monitor_t mon1;
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lv_mem_monitor(&mon1);
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uint32_t t = lv_tick_get();
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lv_obj_t * table = lv_table_create(lv_scr_act());
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/*Set a smaller height to the table. It'll make it scrollable*/
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lv_obj_set_size(table, LV_SIZE_CONTENT, 200);
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lv_table_set_col_width(table, 0, 150);
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lv_table_set_row_cnt(table, ITEM_CNT); /*Not required but avoids a lot of memory reallocation lv_table_set_set_value*/
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lv_table_set_col_cnt(table, 1);
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/*Don't make the cell pressed, we will draw something different in the event*/
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lv_obj_remove_style(table, NULL, LV_PART_ITEMS | LV_STATE_PRESSED);
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uint32_t i;
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for(i = 0; i < ITEM_CNT; i++) {
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lv_table_set_cell_value_fmt(table, i, 0, "Item %"LV_PRIu32, i + 1);
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}
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lv_obj_align(table, LV_ALIGN_CENTER, 0, -20);
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/*Add an event callback to to apply some custom drawing*/
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lv_obj_add_event_cb(table, draw_event_cb, LV_EVENT_DRAW_PART_END, NULL);
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lv_obj_add_event_cb(table, change_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
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lv_mem_monitor_t mon2;
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lv_mem_monitor(&mon2);
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uint32_t mem_used = mon1.free_size - mon2.free_size;
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uint32_t elaps = lv_tick_elaps(t);
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lv_obj_t * label = lv_label_create(lv_scr_act());
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lv_label_set_text_fmt(label, "%"LV_PRIu32" items were created in %"LV_PRIu32" ms\n"
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"using %"LV_PRIu32" bytes of memory",
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ITEM_CNT, elaps, mem_used);
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lv_obj_align(label, LV_ALIGN_BOTTOM_MID, 0, -10);
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}
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#endif
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