change event propagation to be based on parent/child lineage, not z-axis stacking...

[ardour.git] / libs / canvas / canvas / polygon.h

diff --git a/libs/canvas/canvas/polygon.h b/libs/canvas/canvas/polygon.h
index 5f5cca00cf3c8594e366893e4a426613de31bce7..48eb494ae8583f908101a0fcfaa9d64cadaf0400 100644 (file)
--- a/libs/canvas/canvas/polygon.h
+++ b/libs/canvas/canvas/polygon.h
@@ -1,3 +1,22 @@
+/*
+    Copyright (C) 2011-2013 Paul Davis
+    Author: Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
 #ifndef __CANVAS_POLYGON_H__
 #define __CANVAS_POLYGON_H__
 
@@ -11,8 +30,18 @@ class Polygon : public PolyItem, public Fill
 {
 public:
        Polygon (Group *);
+        virtual ~Polygon();
 
        void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
+       void compute_bounding_box () const;
+        bool covers (Duple const &) const;
+
+  protected:
+    mutable float* multiple;
+    mutable float* constant;
+    mutable Points::size_type cached_size;
+    
+    void cache_shape_computation () const;
 };
        
 }