public void DrawGlyphRun(Brush foreground, GlyphRun glyphRun)
{
if (foreground == null)
{
return;
}
AssertState(DeviceState.PageStarted, DeviceState.NoChange);
GlyphPrimitive g = new GlyphPrimitive();
bool needBounds = false;
if (foreground != null && !(foreground is SolidColorBrush))
{
needBounds = true;
}
g.GlyphRun = glyphRun;
g.Brush = BrushProxy.CreateBrush(foreground, g.GetRectBounds(needBounds));
g.Clip = _clip;
g.Opacity = _opacity;
g.OpacityMask = _opacityMask;
// Optimization: Unfold primitive DrawingBrush when possible to avoid rasterizing it.
Primitive primitive = g.UnfoldDrawingBrush();
if (primitive != null)
{
_root.Children.Add(primitive);
}
}
/// <summary>
/// Resolve overlapping for a single primitive
/// </summary>
/// <param name="primitive"></param>
/// <param name="overlapping"></param>
/// <param name="overlapHasTransparency"></param>
/// <param name="disjoint"></param>
/// <param name="desp"></param>
private void AlphaRender(Primitive primitive, List <int> overlapping, int overlapHasTransparency, bool disjoint, string desp)
{
if (primitive == null)
{
return;
}
// Skip alpha flattening when there are too many layer of transparency
if (overlapHasTransparency > Configuration.MaximumTransparencyLayer)
{
overlapping = null;
}
PrimitiveRenderer ri = new PrimitiveRenderer();
ri.Clip = primitive.Clip;
ri.Brush = null;
ri.Pen = null;
ri.Overlapping = overlapping;
ri.Commands = _dl.Commands;
ri.DC = _dc;
ri.Disjoint = disjoint;
GeometryPrimitive p = primitive as GeometryPrimitive;
if (p != null)
{
ri.Brush = p.Brush;
ri.Pen = p.Pen;
bool done = false;
Geometry g = p.Geometry;
GlyphPrimitive gp = p as GlyphPrimitive;
if (gp != null)
{
done = ri.DrawGlyphs(gp.GlyphRun, gp.GetRectBounds(true), p.Transform, desp);
if (!done)
{
g = p.WidenGeometry;
}
}
if (!done)
{
if (!p.Transform.IsIdentity)
{
// Should not occur; GeometryPrimitive.ApplyTransform will push transform
// to geometry and brush.
g = Utility.TransformGeometry(g, p.Transform);
if (ri.Brush != null)
{
ri.Brush = ri.Brush.ApplyTransformCopy(p.Transform);
}
if (ri.Pen != null && ri.Pen.StrokeBrush != null)
{
ri.Pen = ri.Pen.Clone();
ri.Pen.StrokeBrush = ri.Pen.StrokeBrush.ApplyTransformCopy(p.Transform);
}
}
ri.DrawGeometry(g, desp, p);
}
return;
}
ImagePrimitive ip = primitive as ImagePrimitive;
if (ip != null)
{
ri.RenderImage(ip.Image, ip.DstRect, ip.Clip, ip.Transform, desp);
}
else
{
Debug.Assert(false, "Wrong Primitive type");
}
}
