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75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
#include "../../../lvgl.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 event_cb(lv_obj_t * obj, lv_event_t e)
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{
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if(e == LV_EVENT_DRAW_PART_END) {
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lv_obj_draw_hook_dsc_t * hook_dsc = lv_event_get_param();
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/*If the cells are drawn...*/
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if(hook_dsc->part == LV_PART_ITEMS) {
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uint32_t row = hook_dsc->id;
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/*Make the texts in the first cell center aligned*/
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if(row == 0) {
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hook_dsc->label_dsc->align = LV_TEXT_ALIGN_CENTER;
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hook_dsc->rect_dsc->bg_color = lv_color_mix(lv_color_blue(), hook_dsc->rect_dsc->bg_color, LV_OPA_20);
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hook_dsc->rect_dsc->bg_opa = LV_OPA_COVER;
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}
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/*Make every 2nd row grayish*/
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if((row != 0 && row % 2) == 0) {
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hook_dsc->rect_dsc->bg_color = lv_color_mix(lv_color_grey(), hook_dsc->rect_dsc->bg_color, LV_OPA_10);
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hook_dsc->rect_dsc->bg_opa = LV_OPA_COVER;
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}
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}
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}
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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(), NULL);
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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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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 %d", i + 1);
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}
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/*Set a smaller height to the table. It'll make it scrollable*/
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lv_obj_set_height(table, 200);
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lv_obj_align(table, NULL, 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, event_cb, 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(), NULL);
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lv_label_set_text_fmt(label, "%d bytes are used by the table\n"
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"and %d items were added in %d ms",
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mem_used, ITEM_CNT, elaps);
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lv_obj_align(label, NULL, LV_ALIGN_IN_BOTTOM_MID, 0, -10);
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}
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#endif
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