WPF: Convert VisualBrush to Drawing?

Question

I have a VisualBrush and need this VisualBrush as a Drawing. Anyone knows how this can be done? Thanks for any hint!

score 5 · Answer 1 · answered Jun 05 '10 at 01:47

5

Here's the XAML version:

<GeometryDrawing Geometry="M0,0 L1,0 1,1 0,1 Z">
  <GeometryDrawing.Brush>
    <VisualBrush>
      ...
    </VisualBrush>
  </GeometryDrawing.Brush>
</GeometryDrawing>

answered Jun 05 '10 at 01:47

Ray Burns

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score 2 · Accepted Answer · answered Jun 01 '10 at 18:42

Your question doesn't really make sense, because a VisualBrush is unrelated to a Drawing (it would make more sense with a DrawingBrush). However, you can create a Drawing by using the VisualBrush to paint on it. Something like that should work :

public static Drawing GetDrawing(TileBrush brush)
{
    DrawingVisual drawingVisual = new DrawingVisual();
    DrawingContext drawingContext = drawingVisual.RenderOpen();
    drawingContext.DrawRectangle(brush, new Pen(Brushes.Transparent, 0.0), brush.ViewPort);
    drawingContext.Close();
    return drawingVisual.Drawing;
}

(this is valid for any brush inherited from TileBrush, not just a VisualBrush)

Thanks for your reply, looks very promising :-) Note that you can just set the pen to null drawingContext.DrawRectangle(brush, null, 0.0), brush.ViewPort); — stefan.at.kotlin, Jun 01 '10 at 18:44

WPF: Convert VisualBrush to Drawing?

2 Answers2