2 Copyright (C) 2013 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #ifndef __CANVAS_IMAGE__
20 #define __CANVAS_IMAGE__
23 #include <boost/shared_ptr.hpp>
24 #include <boost/shared_array.hpp>
26 #include "canvas/item.h"
28 namespace ArdourCanvas {
30 class Image : public Item
33 Image (Group *, Cairo::Format, int width, int height);
36 Data (boost::shared_array<uint8_t> d, int w, int h, int s, Cairo::Format fmt)
44 boost::shared_array<uint8_t> data;
51 boost::shared_ptr<Data> get_image ();
52 void put_image (boost::shared_ptr<Data>);
54 void render (Rect const &, Cairo::RefPtr<Cairo::Context>) const;
55 void compute_bounding_box () const;
58 Cairo::Format _format;
62 mutable boost::shared_ptr<Data> _current;
63 boost::shared_ptr<Data> _pending;
64 mutable bool _need_render;
65 mutable Cairo::RefPtr<Cairo::Surface> _surface;
68 PBD::Signal0<void> DataReady;
69 PBD::ScopedConnectionList data_connections;