58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
#include "../lv_examples.h"
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#if LV_BUILD_EXAMPLES && LV_USE_FLEX
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static void sw_event_cb(lv_event_t * e)
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{
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lv_event_code_t code = lv_event_get_code(e);
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lv_obj_t * sw = lv_event_get_target(e);
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if(code == LV_EVENT_VALUE_CHANGED) {
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lv_obj_t * list = lv_event_get_user_data(e);
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if(lv_obj_has_state(sw, LV_STATE_CHECKED)) lv_obj_add_flag(list, LV_OBJ_FLAG_SCROLL_ONE);
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else lv_obj_clear_flag(list, LV_OBJ_FLAG_SCROLL_ONE);
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}
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}
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/**
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* Show an example to scroll snap
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*/
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void lv_example_scroll_2(void)
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{
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lv_obj_t * panel = lv_obj_create(lv_scr_act());
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lv_obj_set_size(panel, 280, 120);
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lv_obj_set_scroll_snap_x(panel, LV_SCROLL_SNAP_CENTER);
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lv_obj_set_flex_flow(panel, LV_FLEX_FLOW_ROW);
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lv_obj_align(panel, LV_ALIGN_CENTER, 0, 20);
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uint32_t i;
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for(i = 0; i < 10; i++) {
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lv_obj_t * btn = lv_btn_create(panel);
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lv_obj_set_size(btn, 150, lv_pct(100));
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lv_obj_t * label = lv_label_create(btn);
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if(i == 3) {
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lv_label_set_text_fmt(label, "Panel %"LV_PRIu32"\nno snap", i);
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lv_obj_clear_flag(btn, LV_OBJ_FLAG_SNAPPABLE);
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}
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else {
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lv_label_set_text_fmt(label, "Panel %"LV_PRIu32, i);
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}
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lv_obj_center(label);
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}
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lv_obj_update_snap(panel, LV_ANIM_ON);
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#if LV_USE_SWITCH
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/*Switch between "One scroll" and "Normal scroll" mode*/
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lv_obj_t * sw = lv_switch_create(lv_scr_act());
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lv_obj_align(sw, LV_ALIGN_TOP_RIGHT, -20, 10);
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lv_obj_add_event_cb(sw, sw_event_cb, LV_EVENT_ALL, panel);
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lv_obj_t * label = lv_label_create(lv_scr_act());
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lv_label_set_text(label, "One scroll");
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lv_obj_align_to(label, sw, LV_ALIGN_OUT_BOTTOM_MID, 0, 5);
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#endif
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}
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#endif
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