void ApplyTransform()
{
if (transforms != null)
{
transforms.PushAll();
}
}
public void SetClip(IGraphicsPath path)
{
TransformStack.PopAll();
ResetClip();
clipPath = path.Clone().ToWpf(); // require a clone so changes to path don't affect current clip
clipBounds = clipPath.Bounds.ToEtoF();
ApplyClip();
TransformStack.PushAll();
}
public void SetClip(RectangleF rectangle)
{
TransformStack.PopAll();
ResetClip();
clipBounds = rectangle;
clipPath = null;
ApplyClip();
TransformStack.PushAll();
}
void CreateGroup()
{
CloseGroup();
if (baseContext == null)
{
baseContext = Control;
}
group = new swm.DrawingGroup();
Control = group.Open();
TransformStack.PushAll();
ApplyClip();
}
void CloseGroup()
{
if (group != null && baseContext != null)
{
TransformStack.PopAll();
ResetClip();
Control.Close();
baseContext.DrawDrawing(group);
Control = baseContext;
group = null;
ApplyClip();
TransformStack.PushAll();
}
}
public void Clear(SolidBrush brush)
{
var rect = clipBounds ?? initialClip;
if (drawingVisual != null)
{
// bitmap
Control.Close();
var newbmp = new swmi.RenderTargetBitmap((int)bounds.Width, (int)bounds.Height, 96, 96, swm.PixelFormats.Pbgra32);
newbmp.Render(visual);
swm.Geometry maskgeometry;
if (clipPath != null)
{
maskgeometry = clipPath.ToWpf();
}
else
{
maskgeometry = new swm.RectangleGeometry(rect.ToWpf());
}
var boundsgeometry = new swm.RectangleGeometry(bounds);
maskgeometry = swm.Geometry.Combine(boundsgeometry, maskgeometry, swm.GeometryCombineMode.Exclude, null);
var dr = new swm.GeometryDrawing(swm.Brushes.Black, null, maskgeometry);
var db = new swm.DrawingBrush(dr);
//db.Transform = new swm.TranslateTransform (0.5, 0.5);
Control = drawingVisual.RenderOpen();
PushGuideLines(bounds.X, bounds.Y, bounds.Width, bounds.Height);
Control.PushOpacityMask(db);
Control.DrawImage(newbmp, bounds);
Control.Pop();
TransformStack.PushAll();
ApplyClip();
}
else
{
// drawable
if (brush == null || brush.Color.A < 1.0f)
{
Widget.FillRectangle(Brushes.Black, rect);
}
}
if (brush != null)
{
Widget.FillRectangle(brush, rect);
}
}