1/*
2 * Copyright (C) 2011 Samsung Electronics
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *  * Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 *  * Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef TileCairo_h
27#define TileCairo_h
28
29#if USE(TILED_BACKING_STORE) && USE(CAIRO)
30
31#include "IntPoint.h"
32#include "IntRect.h"
33#include "RefPtrCairo.h"
34#include "Tile.h"
35#include <cairo.h>
36#include <wtf/PassRefPtr.h>
37#include <wtf/RefCounted.h>
38
39namespace WebCore {
40
41class TiledBackingStore;
42
43class TileCairo : public Tile {
44public:
45    static PassRefPtr<Tile> create(TiledBackingStore* backingStore, const Coordinate& tileCoordinate)
46    {
47        return adoptRef(new TileCairo(backingStore, tileCoordinate));
48    }
49    virtual ~TileCairo();
50
51    virtual bool isDirty() const;
52    virtual void invalidate(const IntRect&);
53    virtual Vector<IntRect> updateBackBuffer();
54    virtual void swapBackBufferToFront();
55    virtual bool isReadyToPaint() const;
56    virtual void paint(GraphicsContext*, const IntRect&);
57
58    virtual const Tile::Coordinate& coordinate() const { return m_coordinate; }
59    virtual const IntRect& rect() const { return m_rect; }
60    virtual void resize(const WebCore::IntSize&);
61
62protected:
63    TileCairo(TiledBackingStore*, const Coordinate&);
64
65    TiledBackingStore* m_backingStore;
66    Coordinate m_coordinate;
67    IntRect m_rect;
68
69    RefPtr<cairo_surface_t> m_buffer;
70    RefPtr<cairo_region_t> m_dirtyRegion;
71};
72
73}
74#endif
75#endif
76
77