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;
}
}
