feat(examples): fix examples and add new scroll examples

2021-02-23 11:31:10 +01:00
parent 1442a0f8bc
commit 00b1c80d3c
7 changed files with 156 additions and 4 deletions
--- a/examples/scroll/lv_example_scroll_2.c
+++ b/examples/scroll/lv_example_scroll_2.c
@@ -0,0 +1,51 @@
+#include "../../lvgl.h"
+#if LV_BUILD_EXAMPLES
+
+static void sw_event_cb(lv_obj_t * sw, lv_event_t e)
+{
+    if(e == LV_EVENT_VALUE_CHANGED) {
+        lv_obj_t * list = lv_event_get_user_data();
+
+        if(lv_obj_has_state(sw, LV_STATE_CHECKED)) lv_obj_add_flag(list, LV_OBJ_FLAG_SCROLL_ONE);
+        else lv_obj_clear_flag(list, LV_OBJ_FLAG_SCROLL_ONE);
+    }
+}
+
+/**
+ * Show an example to scroll snap
+ */
+void lv_example_scroll_2(void)
+{
+    lv_obj_t * list = lv_obj_create(lv_scr_act(), NULL);
+    lv_obj_set_size(list, 280, 150);
+    lv_obj_set_scroll_snap_align_x(list, LV_SCROLL_SNAP_ALIGN_CENTER);
+    lv_obj_set_layout(list, &lv_flex_queue);
+
+    uint32_t i;
+    for(i = 0; i < 10; i++) {
+        lv_obj_t * btn = lv_btn_create(list, NULL);
+        lv_obj_set_size(btn, 150, 100);
+
+        lv_obj_t * label = lv_label_create(btn, NULL);
+        if(i == 3) {
+            lv_label_set_text_fmt(label, "Panel %d\nno snap", i);
+            lv_obj_clear_flag(btn, LV_OBJ_FLAG_SNAPABLE);
+        } else {
+            lv_label_set_text_fmt(label, "Panel %d", i);
+        }
+
+        lv_obj_center(label);
+    }
+    lv_obj_update_snap(list, LV_ANIM_ON);
+
+
+    /*Switch between "One scroll" and "Normal scroll" mode*/
+    lv_obj_t * sw = lv_switch_create(lv_scr_act(), NULL);
+    lv_obj_align(sw, NULL, LV_ALIGN_IN_TOP_RIGHT, -20, 10);
+    lv_obj_add_event_cb(sw, sw_event_cb, list);
+    lv_obj_t * label = lv_label_create(lv_scr_act(), NULL);
+    lv_label_set_text(label, "One scroll");
+    lv_obj_align(label, sw, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);
+}
+
+#endif