Adds orientation related callbacks
Adds orientation related callbacks

mohsinalimat/JVFloatingDrawer,allwein/JVFloatingDrawer,0x73/JVFloatingDrawer,zilaiyedaren/JVFloatingDrawer,damoncoo/JVFloatingDrawer,JVillella/JVFloatingDrawer,rayshen/JVFloatingDrawer,andyFang1688/JVFloatingDrawer