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https://github.com/lvgl/lvgl.git
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54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
#include "../../lvgl.h"
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#if LV_BUILD_EXAMPLES
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static void sw_event_cb(lv_obj_t * sw, lv_event_t e)
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{
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if(e == LV_EVENT_VALUE_CHANGED) {
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lv_obj_t * list = lv_event_get_user_data();
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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(), NULL);
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lv_obj_set_size(panel, 280, 150);
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lv_obj_set_scroll_snap_x(panel, LV_SCROLL_SNAP_CENTER);
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lv_obj_set_layout(panel, &lv_flex_row_nowrap);
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lv_obj_center(panel);
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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, NULL);
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lv_obj_set_size(btn, 150, 100);
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lv_obj_t * label = lv_label_create(btn, NULL);
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if(i == 3) {
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lv_label_set_text_fmt(label, "Panel %d\nno snap", i);
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lv_obj_clear_flag(btn, LV_OBJ_FLAG_SNAPABLE);
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} else {
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lv_label_set_text_fmt(label, "Panel %d", 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(), NULL);
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lv_obj_align(sw, NULL, LV_ALIGN_IN_TOP_RIGHT, -20, 10);
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lv_obj_add_event_cb(sw, sw_event_cb, panel);
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lv_obj_t * label = lv_label_create(lv_scr_act(), NULL);
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lv_label_set_text(label, "One scroll");
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lv_obj_align(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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