2 Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public
6 License as published by the Free Software Foundation; either
7 version 2 of the License, or (at your option) any later version.
9 This library 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 GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public License
15 along with this library; see the file COPYING.LIB. If not, write to
16 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 Boston, MA 02110-1301, USA.
23 #if ENABLE(TILED_BACKING_STORE)
26 #include "IntPointHash.h"
28 #include <wtf/RefCounted.h>
32 class GraphicsContext;
34 class Tile : public RefCounted<Tile> {
36 typedef IntPoint Coordinate;
40 virtual bool isDirty() const = 0;
41 virtual void invalidate(const IntRect&) = 0;
42 virtual Vector<IntRect> updateBackBuffer() = 0;
43 virtual void swapBackBufferToFront() = 0;
44 virtual bool isReadyToPaint() const = 0;
45 virtual void paint(GraphicsContext*, const IntRect&) = 0;
47 virtual const Tile::Coordinate& coordinate() const = 0;
48 virtual const IntRect& rect() const = 0;
49 virtual void resize(const WebCore::IntSize&) = 0;