public override void BuildFilter(RenderContext renderer)
{
switch (Overflow)
{
case Overflow.Auto:
case Overflow.Visible:
case Overflow.Scroll:
base.BuildFilter(renderer);
break;
default:
ScreenRegion prevClip = renderer.ClipRegion;
try{
Css.ComputedStyle cs = Style.Computed;
renderer.SetClip(new BoxRegion(cs.OffsetLeft, cs.OffsetTop, cs.PixelWidth, cs.PixelHeight), false);
base.BuildFilter(renderer);
}finally{
renderer.SetClip(prevClip, true);
}
break;
}
}
/// <summary>
/// Sets the clipping region of the specified <see cref="RenderContext"/>.
/// </summary>
/// <param name="renderer">The <see cref="RenderContext"/> to have its clipping region set.</param>
protected virtual void SetClip(RenderContext renderer)
{
Css.Value clip = ClipPath;
if (clip == null)
{
return;
}
_previousClip = renderer.ClipRegion;
// Get the shape from the clip value:
Css.Value nextValue;
ShapeProvider shape = clip.ToShape(this, renderer, out nextValue);
if (clip != nextValue)
{
// Overwrite the raw clip var:
ClipPath = nextValue;
}
if (shape != null)
{
// Get the region now:
renderer.SetClip(shape.GetRegion(this, renderer), false);
}
}
