private void ApplyContainerClip( DraggedElementAdorner adorner )
{
if( adorner == null )
return;
var adornedElement = adorner.AdornedElement;
if( adornedElement == null )
return;
// We only want to clip Cells other than the dragged Cell
if( adornedElement == this.DraggedElement )
return;
var dataGridContext = DataGridControl.GetDataGridContext( adornedElement );
if( dataGridContext == null )
return;
var dataItemStore = CustomItemContainerGenerator.GetDataItemProperty( adornedElement );
if( ( dataItemStore == null ) || dataItemStore.IsEmpty )
return;
var dataItem = dataItemStore.Data;
if( dataItem == null )
return;
var container = dataGridContext.GetContainerFromItem( dataItem ) as UIElement;
if( container != null )
{
RectangleGeometry containerClip = container.Clip as RectangleGeometry;
if( containerClip != null )
{
// Transform the bounds of the clip region of the container to fit the bounds of the adornedElement
Rect transformedBounds = container.TransformToDescendant( adornedElement ).TransformBounds( containerClip.Bounds );
containerClip = new RectangleGeometry( transformedBounds );
}
adorner.AdornedElementImage.Clip = containerClip;
}
else
{
//This is an item that is in the FixedHeaders/Footers of the gird, do not clip it.
adorner.AdornedElementImage.Clip = null;
}
}
private void ApplyContainerClip( DraggedElementAdorner adorner )
{
if( adorner == null )
return;
UIElement adornedElement = adorner.AdornedElement;
if( adornedElement == null )
return;
// We only want to clip Cells other than the dragged Cell
if( adornedElement == this.DraggedElement )
return;
DataGridContext dataGridContext = DataGridControl.GetDataGridContext( adornedElement );
if( dataGridContext == null )
return;
object dataItem = adornedElement.GetValue( CustomItemContainerGenerator.DataItemPropertyProperty );
if( dataItem == null )
return;
UIElement container = dataGridContext.GetContainerFromItem( dataItem ) as UIElement;
if( container != null )
{
RectangleGeometry containerClip = container.Clip as RectangleGeometry;
if( containerClip != null )
{
// Transform the bounds of the clip region of the container to fit the bounds of the adornedElement
Rect transformedBounds = container.TransformToDescendant( adornedElement ).TransformBounds( containerClip.Bounds );
containerClip = new RectangleGeometry( transformedBounds );
}
adorner.AdornedElementImage.Clip = containerClip;
}
else
{
// Clip adorner completely
adorner.AdornedElementImage.Clip = new RectangleGeometry( Rect.Empty );
}
}