X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fcanvas%2Fimage.cc;h=32e453dc30e70b3a19bd271dece3ff2e9d8e28b2;hb=c29d392b0ca534b29f3436dc10004cc807bd0eee;hp=b13859aeda270882ab4adfc17e6eee9b2e0f4d94;hpb=bebe2af95ad9999fdca719450dc2c70cfb849076;p=ardour.git

diff --git a/libs/canvas/image.cc b/libs/canvas/image.cc
index b13859aeda..32e453dc30 100644
--- a/libs/canvas/image.cc
+++ b/libs/canvas/image.cc
@@ -43,10 +43,13 @@ Image::render (Rect const& area, Cairo::RefPtr<Cairo::Context> context) const
 							_pending->stride);
 		_current = _pending;
 	}
+	
+	Rect self = item_to_window (Rect (0, 0, _width, _height));
+	boost::optional<Rect> draw = self.intersection (area);
 
-	if (_surface) {
-		context->set_source (_surface, 0, 0);
-		context->rectangle (area.x0, area.y0, area.width(), area.height());
+	if (_surface && draw) {
+		context->set_source (_surface, self.x0, self.y0);
+		context->rectangle (draw->x0, draw->y0, draw->width(), draw->height());
 		context->fill ();
 	}
 }