1/*
2 Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
3
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.
8
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.
13
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.
18 */
19
20#ifndef Tile_h
21#define Tile_h
22
23#if USE(TILED_BACKING_STORE)
24
25#include "IntPoint.h"
26#include "IntPointHash.h"
27#include "IntRect.h"
28#include <wtf/RefCounted.h>
29#include <wtf/Vector.h>
30
31namespace WebCore {
32
33class GraphicsContext;
34
35class Tile : public RefCounted<Tile> {
36public:
37    typedef IntPoint Coordinate;
38
39    virtual ~Tile() { }
40
41    virtual bool isDirty() const = 0;
42    virtual void invalidate(const IntRect&) = 0;
43    virtual Vector<IntRect> updateBackBuffer() = 0;
44    virtual void swapBackBufferToFront() = 0;
45    virtual bool isReadyToPaint() const = 0;
46    virtual void paint(GraphicsContext*, const IntRect&) = 0;
47
48    virtual const Tile::Coordinate& coordinate() const = 0;
49    virtual const IntRect& rect() const = 0;
50    virtual void resize(const WebCore::IntSize&) = 0;
51};
52
53}
54#endif
55#endif
56