protected override void onDraw(Context gr)
{
base.onDraw(gr);
Rectangle r = ClientRectangle;
Foreground.SetAsSource(gr, r);
gr.Rectangle(r, 0.1);
gr.Stroke();
r.Width = _pic.Dimensions.Width * zoom / 100;
r.Height = _pic.Dimensions.Height * zoom / 100;
gr.Save();
editorMutex.EnterReadLock();
gr.Translate(-ScrollX, -ScrollY);
if (_pic != null)
{
_pic.Paint(gr, r);
}
editorMutex.ExitReadLock();
gr.Restore();
}
void onStartDrag(object sender, EventArgs e)
{
GraphicObject go = sender as GraphicObject;
lock (go.IFace.UpdateMutex) {
go.IFace.DragImageHeight = dragIconSize;
go.IFace.DragImageWidth = dragIconSize;
SvgPicture pic = new SvgPicture();
pic.Load(go.IFace, IconPath);
ImageSurface img = new ImageSurface(Format.Argb32, dragIconSize, dragIconSize);
using (Context ctx = new Context(img)) {
Rectangle r = new Rectangle(0, 0, dragIconSize, dragIconSize);
pic.Paint(ctx, r);
ctx.Operator = Operator.In;
ctx.SetSourceRGBA(1.0, 1.0, 1.0, 1.0);
ctx.Rectangle(r);
ctx.Fill();
}
go.IFace.DragImage = img;
}
}