scroll Dir
The scroll direction (eg LV_DIR_TOP). Do note that this property can be set with or-ed values, eg LV_DIR_TOP or LV_DIR_LEFT. Below are the possible values:
LV_DIR_TOP : only scroll up
LV_DIR_LEFT : only scroll left
LV_DIR_BOTTOM : only scroll down
LV_DIR_RIGHT : only scroll right
LV_DIR_HOR : only scroll horizontally
LV_DIR_TOP : only scroll vertically
LV_DIR_ALL : scroll any directions