1 files changed, 84 insertions, 0 deletions
diff --git a/Source/WebCore/platform/graphics/texmap/TextureMapperBackingStore.h b/Source/WebCore/platform/graphics/texmap/TextureMapperBackingStore.h
new file mode 100644
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+++ b/Source/WebCore/platform/graphics/texmap/TextureMapperBackingStore.h
@@ -0,0 +1,84 @@
+/*
+ Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB.  If not, write to
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+ */
+
+#ifndef TextureMapperBackingStore_h
+#define TextureMapperBackingStore_h
+
+#include "FloatRect.h"
+#include "Image.h"
+#include "RefPtr.h"
+#include "TextureMapper.h"
+#include "TextureMapperPlatformLayer.h"
+
+namespace WebCore {
+
+class GraphicsLayer;
+
+class TextureMapperBackingStore : public TextureMapperPlatformLayer, public RefCounted<TextureMapperBackingStore> {
+public:
+    virtual PassRefPtr<BitmapTexture> texture() const = 0;
+    virtual void paintToTextureMapper(TextureMapper*, const FloatRect&, const TransformationMatrix&, float, BitmapTexture*) = 0;
+    virtual ~TextureMapperBackingStore() { }
+};
+
+class TextureMapperTile {
+public:
+    inline PassRefPtr<BitmapTexture> texture() const { return m_texture; }
+    inline FloatRect rect() const { return m_rect; }
+    inline void setTexture(BitmapTexture* texture) { m_texture = texture; }
+    inline void setRect(const FloatRect& rect) { m_rect = rect; }
+
+    void updateContents(TextureMapper*, Image*, const IntRect&, BitmapTexture::PixelFormat);
+    virtual void paint(TextureMapper*, const TransformationMatrix&, float, BitmapTexture*);
+    virtual ~TextureMapperTile() { }
+
+    TextureMapperTile(const FloatRect& rect)
+        : m_rect(rect)
+    {
+    }
+
+private:
+    RefPtr<BitmapTexture> m_texture;
+    FloatRect m_rect;
+};
+
+class TextureMapperTiledBackingStore : public TextureMapperBackingStore {
+public:
+    void updateContentsFromLayer(TextureMapper*, GraphicsLayer*, const IntRect&);
+    virtual ~TextureMapperTiledBackingStore() { }
+    virtual void paintToTextureMapper(TextureMapper*, const FloatRect&, const TransformationMatrix&, float, BitmapTexture*);
+    virtual PassRefPtr<BitmapTexture> texture() const;
+    void updateContents(TextureMapper*, Image*, const FloatSize&, const IntRect&, BitmapTexture::PixelFormat);
+    void updateContents(TextureMapper* textureMapper, Image* image, BitmapTexture::PixelFormat format) { updateContents(textureMapper, image, image->size(), image->rect(), format); }
+    inline FloatRect rect() const { return FloatRect(FloatPoint::zero(), m_size); }
+    static PassRefPtr<TextureMapperTiledBackingStore> create() { return adoptRef(new TextureMapperTiledBackingStore); }
+    void setContentsToImage(Image* image) { m_image = image; }
+    void updateContentsFromImageIfNeeded(TextureMapper*);
+
+private:
+    TextureMapperTiledBackingStore() { }
+    void createOrDestroyTilesIfNeeded(const FloatSize& backingStoreSize, const IntSize& tileSize, bool hasAlpha);
+
+    Vector<TextureMapperTile> m_tiles;
+    FloatSize m_size;
+    RefPtr<Image> m_image;
+};
+
+}
+#endif // TextureMapperBackingStore_h