Gestures

Detect swipe and pinch gestures on widgets.

Pinch, rotate, and two-finger swipe

Transform a 300x300 rectangle with three LV_EVENT_GESTURE callbacks.

A clickable label styled as a 300x300 rectangle is centered on the screen. Three callbacks are attached on LV_EVENT_GESTURE: one handles LV_INDEV_GESTURE_PINCH and rescales the rectangle between 0.4x and 2.0x via lv_event_get_pinch_scale, one handles LV_INDEV_GESTURE_ROTATE and applies lv_obj_set_style_transform_rotation around the pivot, and one handles LV_INDEV_GESTURE_TWO_FINGERS_SWIPE and writes the direction and distance into the label text.