public Image Copy(ICanvas canvas, Area area)
{
Image img;
Pixmap pm;
global::Cairo.Context ctx;
var w = canvas.Widget;
NoWindowWidget widget = new NoWindowWidget {
Width = area.Width, Height = area.Height
};
canvas.SetWidget(widget);
pm = new Pixmap(null, (int)area.Width, (int)area.Height, 24);
ctx = Gdk.CairoHelper.Create(pm);
using (CairoContext c = new CairoContext(ctx)) {
ctx.Translate(-area.Start.X, -area.Start.Y);
canvas.Draw(c, null);
}
img = new Image(Pixbuf.FromDrawable(pm, Colormap.System, 0, 0, 0, 0,
(int)area.Width, (int)area.Height));
canvas.SetWidget(w);
return(img);
}
protected Image CreateInternalPreview(ICanvasView view, IViewModel vm, double width, double height)
{
NoWindowWidget widget = new NoWindowWidget();
view.SetWidget(widget);
view.SetViewModel(vm);
// set the widget sizes after the view model has been set
widget.Width = width;
widget.Height = height;
return(App.Current.DrawingToolkit.Copy(view, new Area(new Point(0, 0), width, height)));
}
