1/*
2 Copyright (C) 2013 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 TextureMapperTiledBackingStore_h
21#define TextureMapperTiledBackingStore_h
22
23#if USE(TEXTURE_MAPPER)
24
25#include "FloatRect.h"
26#include "Image.h"
27#include "TextureMapperBackingStore.h"
28#include "TextureMapperTile.h"
29#include <wtf/RefPtr.h>
30
31namespace WebCore {
32
33class TextureMapper;
34
35class TextureMapperTiledBackingStore : public TextureMapperBackingStore {
36public:
37    static PassRefPtr<TextureMapperTiledBackingStore> create() { return adoptRef(new TextureMapperTiledBackingStore); }
38    virtual ~TextureMapperTiledBackingStore() { }
39
40    virtual PassRefPtr<BitmapTexture> texture() const override;
41    virtual void paintToTextureMapper(TextureMapper*, const FloatRect&, const TransformationMatrix&, float) override;
42    virtual void drawBorder(TextureMapper*, const Color&, float borderWidth, const FloatRect&, const TransformationMatrix&) override;
43    virtual void drawRepaintCounter(TextureMapper*, int repaintCount, const Color&, const FloatRect&, const TransformationMatrix&) override;
44    void updateContents(TextureMapper*, Image*, const FloatSize&, const IntRect&, BitmapTexture::UpdateContentsFlag);
45    void updateContents(TextureMapper*, GraphicsLayer*, const FloatSize&, const IntRect&, BitmapTexture::UpdateContentsFlag);
46
47    void setContentsToImage(Image* image) { m_image = image; }
48
49private:
50    TextureMapperTiledBackingStore();
51    void createOrDestroyTilesIfNeeded(const FloatSize& backingStoreSize, const IntSize& tileSize, bool hasAlpha);
52    void updateContentsFromImageIfNeeded(TextureMapper*);
53    TransformationMatrix adjustedTransformForRect(const FloatRect&);
54    inline FloatRect rect() const { return FloatRect(FloatPoint::zero(), m_size); }
55
56    Vector<TextureMapperTile> m_tiles;
57    FloatSize m_size;
58    RefPtr<Image> m_image;
59};
60
61} // namespace WebCore
62#endif
63
64#endif
65