When rendering a Canvas::Rectangle take its _position into account, even though in...

[ardour.git] / libs / canvas / rectangle.cc

diff --git a/libs/canvas/rectangle.cc b/libs/canvas/rectangle.cc
index 57c26874c454de36fb256c46f3b3f75cd7bc751b..cea5567dcc629dc199d528f2899cd4e99d657d07 100644 (file)
--- a/libs/canvas/rectangle.cc
+++ b/libs/canvas/rectangle.cc
@@ -51,7 +51,12 @@ Rectangle::Rectangle (Group* parent, Rect const & rect)
 void
 Rectangle::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
 {
-       Rect self = item_to_window (_rect);
+       /* In general, a Rectangle will have a _position of (0,0) within its
+          parent, and its extent is actually defined by _rect. But in the
+          unusual case that _position is set to something other than (0,0),
+          we should take that into account when rendering.
+       */
+       Rect self = item_to_window (_rect.translate (_position));
        boost::optional<Rect> r = self.intersection (area);
 
        if (!r) {