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-rw-r--r--WebCore/platform/graphics/texmap/TextureMapper.h135
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diff --git a/WebCore/platform/graphics/texmap/TextureMapper.h b/WebCore/platform/graphics/texmap/TextureMapper.h
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--- a/WebCore/platform/graphics/texmap/TextureMapper.h
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-/*
- Copyright (C) 2010 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 TextureMapper_h
-#define TextureMapper_h
-
-#if USE(ACCELERATED_COMPOSITING)
-#if (defined(QT_OPENGL_LIB))
- #if defined(QT_OPENGL_ES_2) && !defined(TEXMAP_OPENGL_ES_2)
- #define TEXMAP_OPENGL_ES_2
- #endif
-#endif
-
-#include "GraphicsContext.h"
-#include "IntRect.h"
-#include "IntSize.h"
-#include "TransformationMatrix.h"
-
-/*
- TextureMapper is a mechanism that enables hardware acceleration of CSS animations (accelerated compositing) without
- a need for a platform specific scene-graph library like CoreAnimations or QGraphicsView.
-*/
-
-namespace WebCore {
-
-class TextureMapper;
-
-// A 2D texture that can be the target of software or GL rendering.
-class BitmapTexture : public RefCounted<BitmapTexture> {
-public:
- BitmapTexture() : m_lockCount(0) {}
- virtual ~BitmapTexture() { }
-
- virtual bool allowOfflineTextureUpload() const { return false; }
- virtual void destroy() = 0;
- virtual IntSize size() const = 0;
- virtual bool isValid() const = 0;
- virtual void reset(const IntSize& size, bool opaque = false)
- {
- m_isOpaque = opaque;
- m_contentSize = size;
- }
-
- virtual void pack() { }
- virtual void unpack() { }
- virtual bool isPacked() const { return false; }
-
- virtual PlatformGraphicsContext* beginPaint(const IntRect& dirtyRect) = 0;
- virtual void endPaint() = 0;
- virtual PlatformGraphicsContext* beginPaintMedia()
- {
- return beginPaint(IntRect(0, 0, size().width(), size().height()));
- }
- virtual void setContentsToImage(Image*) = 0;
- virtual bool save(const String& filename) { return false; }
-
- inline void lock() { ++m_lockCount; }
- inline void unlock() { --m_lockCount; }
- inline bool isLocked() { return m_lockCount; }
- inline IntSize contentSize() const { return m_contentSize; }
- inline void setOffset(const IntPoint& o) { m_offset = o; }
- inline IntPoint offset() const { return m_offset; }
-
-protected:
-
-private:
- int m_lockCount;
- IntSize m_contentSize;
- bool m_isOpaque;
- IntPoint m_offset;
-};
-
-// A "context" class used to encapsulate accelerated texture mapping functions: i.e. drawing a texture
-// onto the screen or into another texture with a specified transform, opacity and mask.
-class TextureMapper {
- friend class BitmapTexture;
-
-public:
- static PassOwnPtr<TextureMapper> create(GraphicsContext* graphicsContext = 0);
- virtual ~TextureMapper() { }
-
- virtual void drawTexture(const BitmapTexture& texture, const IntRect& target, const TransformationMatrix& matrix = TransformationMatrix(), float opacity = 1.0f, const BitmapTexture* maskTexture = 0) = 0;
-
- // makes a surface the target for the following drawTexture calls.
- virtual void bindSurface(BitmapTexture* surface) = 0;
- virtual void paintToTarget(const BitmapTexture& texture, const IntSize&, const TransformationMatrix& matrix, float opacity, const IntRect& visibleRect)
- {
- drawTexture(texture, IntRect(0, 0, texture.contentSize().width(), texture.contentSize().height()), matrix, opacity, 0);
- }
-
- virtual void setGraphicsContext(GraphicsContext*) { }
- virtual void setClip(const IntRect&) = 0;
- virtual bool allowSurfaceForRoot() const = 0;
- virtual PassRefPtr<BitmapTexture> createTexture() = 0;
-
- void setImageInterpolationQuality(InterpolationQuality quality) { m_interpolationQuality = quality; }
- void setTextDrawingMode(TextDrawingModeFlags mode) { m_textDrawingMode = mode; }
-
- InterpolationQuality imageInterpolationQuality() const { return m_interpolationQuality; }
- TextDrawingModeFlags textDrawingMode() const { return m_textDrawingMode; }
-
- void setViewportSize(const IntSize&);
-
-protected:
- TextureMapper()
- : m_interpolationQuality(InterpolationDefault)
- , m_textDrawingMode(TextModeFill)
- {}
-
-private:
- InterpolationQuality m_interpolationQuality;
- TextDrawingModeFlags m_textDrawingMode;
-};
-
-};
-
-#endif
-
-#endif