private static void InputAdapterPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
ZoomCanvas canvas = obj as ZoomCanvas;
if (canvas == null)
{
return;
}
IZoomCanvasInputAdapter newAdapter = e.NewValue as IZoomCanvasInputAdapter;
IZoomCanvasInputAdapter oldAdapter = e.OldValue as IZoomCanvasInputAdapter;
if (oldAdapter != null)
{
oldAdapter.SetState -= canvas.ChildSetState;
oldAdapter.ManipulationDelta -= canvas.ChildManipulationDelta;
oldAdapter.ManipulationComplete -= canvas.ChildManipulationComplete;
}
if (newAdapter != null)
{
newAdapter.SetState += canvas.ChildSetState;
newAdapter.ManipulationDelta += canvas.ChildManipulationDelta;
newAdapter.ManipulationComplete += canvas.ChildManipulationComplete;
}
}
private static void IsLockedPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
ZoomCanvas canvas = obj as ZoomCanvas;
if (canvas == null)
{
return;
}
canvas.UpdateIsLocked();
}