wpf - 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!

Answer 1

这是 XAML 版本：

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

Answer 2

您的问题实际上没有意义，因为 aVisualBrush与 a 无关Drawing（与 a 更有意义DrawingBrush）。但是，您可以Drawing通过在VisualBrush其上绘制来创建一个。类似的东西应该可以工作：

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;
}

（这适用于任何继承自 的画笔TileBrush，而不仅仅是 a VisualBrush）