/// <summary> /// Called from the DrawingContext when the DrawingContext is closed. /// </summary> internal override void RenderClose(IDrawingContent newContent) { IDrawingContent oldContent; // // First cleanup the old content and the state associate with this node // related to it's content. // oldContent = _content; _content = null; if (oldContent != null) { // // Remove the notification handlers. // oldContent.PropagateChangedHandler(ContentsChangedHandler, false /* remove */); // // Disconnect the old content from this visual. // DisconnectAttachedResource( VisualProxyFlags.IsContentConnected, ((DUCE.IResource)oldContent)); } // // Prepare the new content. // if (newContent != null) { // Propagate notification handlers. newContent.PropagateChangedHandler(ContentsChangedHandler, true /* adding */); } _content = newContent; // // Mark the visual dirty on all channels and propagate // the flags up the parent chain. // SetFlagsOnAllChannels(true, VisualProxyFlags.IsContentDirty); PropagateFlags( this, VisualFlags.IsSubtreeDirtyForPrecompute, VisualProxyFlags.IsSubtreeDirtyForRender); }
/// <summary> /// This method is overrided on Visuals that can instantiate IDrawingContext /// Currently, DrawingVisual and UIElement /// </summary> internal virtual void RenderClose(IDrawingContent newContent) { }