private void Cleanup()
{
_maskGraphics.Stop();
_component.RemoveEventListener(MoveEvent.MOVE, MoveHandler, EventPhase.Target);
_component.RemoveEventListener(ResizeEvent.RESIZE, ResizeHandler, EventPhase.Target);
if (null != _parent)
{
_parent.RemoveChild(_maskGraphics);
}
_maskGraphics = null;
}
/// <summary>
/// Shows the mask
/// </summary>
/// <param name="component"></param>
public void Mask(DisplayListMember component)
{
_component = component;
#if DEBUG
if (DebugMode)
{
Debug.Log("Masking component: " + component);
}
#endif
if (null != _maskGraphics)
{
return; // already masking this component
}
_parent = _component.Parent ?? (_component is Stage ? _component as Stage : null);
if (null == _parent)
{
return; // we are not on the display list, so we have nothing to mask indeed
}
var imc = _component as InvalidationManagerClient;
_maskGraphics = new T
{
IncludeInLayout = false,
X = _component.X,
Y = _component.Y,
Width = null != imc?imc.GetExplicitOrMeasuredWidth() : _component.Width,
Height = null != imc?imc.GetExplicitOrMeasuredHeight() : _component.Height
//Bounds = (Rectangle)_component.Bounds.Clone() // NOTE: BEWARE! This was the reference bug (without Clone())!!!!!!!!!
};
_parent.AddChild(_maskGraphics);
//_maskGraphics.ValidateNow(); // commented out 20130331 and moved to LoadingMaskAnimator
// critical!
//_maskGraphics.Transform.Apply(); // TODO: remove
//_maskGraphics.Parent.Transform.ValidateChild(_maskGraphics);
_maskGraphics.InvalidateTransform();
// subscribe to MOVE and RESIZE events of the component
// we shall be levitating just over the component
_component.AddEventListener(MoveEvent.MOVE, MoveHandler, EventPhase.Target);
_component.AddEventListener(ResizeEvent.RESIZE, ResizeHandler, EventPhase.Target);
_maskGraphics.Play();
}
/// <summary>
/// Hides the mask
/// </summary>
public void Unmask()
{
if (null == _maskGraphics)
{
return;
}
_maskGraphics.Stop();
_component.RemoveEventListener(MoveEvent.MOVE, MoveHandler, EventPhase.Target);
_component.RemoveEventListener(ResizeEvent.RESIZE, ResizeHandler, EventPhase.Target);
if (null != _parent)
{
_parent.RemoveChild(_maskGraphics);
}
_maskGraphics.Dispose();
_maskGraphics = null;
}
