/// <summary>
/// Converts a RenderData content representation into a DrawingGroup
/// content representation.
/// </summary>
/// <param name="renderData"> The RenderData to convert </param>
/// <returns>
/// A new DrawingGroup representation that is functionally equivalent to the
/// passed-in RenderData.
/// </returns>
internal static DrawingGroup DrawingGroupFromRenderData(RenderData renderData)
{
//
// Create & open a new DrawingGroup
//
DrawingGroup drawingGroup = new DrawingGroup();
DrawingContext dc = drawingGroup.Open();
//
// Create a DrawingGroup from the RenderData by walking
// the RenderData & having it forward it's base value's
// and animations to DrawingGroup
//
//
// The Drawing tree we're about to produce should not be an inheritance context,
// since that would place all mutable Freezables in the render data into shared
// state, which would in turn case them to lose their inheritance context entirely.
// This is controlled by setting "CanBeInheritanceContext" to false on the
// DrawingContext which will then be applied to all new objects it creates.
//
DrawingDrawingContext ddc = dc as DrawingDrawingContext;
if (ddc != null)
{
ddc.CanBeInheritanceContext = false;
}
DrawingContextDrawingContextWalker walker =
new DrawingContextDrawingContextWalker(dc);
renderData.BaseValueDrawingContextWalk(walker);
//
// Close the DrawingContext & return the new DrawingGroup
//
dc.Close();
return(drawingGroup);
}
/// <summary>
/// Converts a RenderData content representation into a DrawingGroup
/// content representation.
/// </summary>
/// <param name="renderData"> The RenderData to convert </param>
/// <returns>
/// A new DrawingGroup representation that is functionally equivalent to the
/// passed-in RenderData.
/// </returns>
internal static DrawingGroup DrawingGroupFromRenderData(RenderData renderData)
{
//
// Create & open a new DrawingGroup
//
DrawingGroup drawingGroup = new DrawingGroup();
DrawingContext dc = drawingGroup.Open();
//
// Create a DrawingGroup from the RenderData by walking
// the RenderData & having it forward it's base value's
// and animations to DrawingGroup
//
//
// The Drawing tree we're about to produce should not be an inheritance context,
// since that would place all mutable Freezables in the render data into shared
// state, which would in turn case them to lose their inheritance context entirely.
// This is controlled by setting "CanBeInheritanceContext" to false on the
// DrawingContext which will then be applied to all new objects it creates.
//
DrawingDrawingContext ddc = dc as DrawingDrawingContext;
if (ddc != null)
{
ddc.CanBeInheritanceContext = false;
}
DrawingContextDrawingContextWalker walker =
new DrawingContextDrawingContextWalker(dc);
renderData.BaseValueDrawingContextWalk(walker);
//
// Close the DrawingContext & return the new DrawingGroup
//
dc.Close();
return drawingGroup;
}