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/*
Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
Copyright (C) 2013 Company 100, Inc.
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 CoordinatedGraphicsScene_h
#define CoordinatedGraphicsScene_h
#if USE(COORDINATED_GRAPHICS)
#include "GraphicsContext.h"
#include "GraphicsLayer.h"
#include "GraphicsLayerAnimation.h"
#include "GraphicsSurface.h"
#include "IntRect.h"
#include "IntSize.h"
#include "TextureMapper.h"
#include "TextureMapperBackingStore.h"
#include "TextureMapperFPSCounter.h"
#include "TextureMapperLayer.h"
#include "Timer.h"
#include <WebCore/CoordinatedGraphicsState.h>
#include <WebCore/CoordinatedSurface.h>
#include <functional>
#include <wtf/HashSet.h>
#include <wtf/ThreadingPrimitives.h>
#include <wtf/Vector.h>
#if USE(GRAPHICS_SURFACE)
#include "TextureMapperSurfaceBackingStore.h"
#endif
namespace WebCore {
class CoordinatedBackingStore;
class CoordinatedGraphicsSceneClient {
public:
virtual ~CoordinatedGraphicsSceneClient() { }
virtual void purgeBackingStores() = 0;
virtual void renderNextFrame() = 0;
virtual void updateViewport() = 0;
virtual void commitScrollOffset(uint32_t layerID, const IntSize& offset) = 0;
};
class CoordinatedGraphicsScene : public ThreadSafeRefCounted<CoordinatedGraphicsScene>, public TextureMapperLayer::ScrollingClient {
public:
explicit CoordinatedGraphicsScene(CoordinatedGraphicsSceneClient*);
virtual ~CoordinatedGraphicsScene();
void paintToCurrentGLContext(const TransformationMatrix&, float, const FloatRect&, const Color& backgroundColor, bool drawsBackground, TextureMapper::PaintFlags = 0);
void paintToGraphicsContext(PlatformGraphicsContext*, const Color& backgroundColor, bool drawsBackground);
void setScrollPosition(const FloatPoint&);
void detach();
void appendUpdate(std::function<void()>);
WebCore::TextureMapperLayer* findScrollableContentsLayerAt(const WebCore::FloatPoint&);
virtual void commitScrollOffset(uint32_t layerID, const IntSize& offset);
// The painting thread must lock the main thread to use below two methods, because two methods access members that the main thread manages. See m_client.
// Currently, QQuickWebPage::updatePaintNode() locks the main thread before calling both methods.
void purgeGLResources();
bool isActive() const { return m_isActive; }
void setActive(bool);
void commitSceneState(const CoordinatedGraphicsState&);
void setViewBackgroundColor(const Color& color) { m_viewBackgroundColor = color; }
Color viewBackgroundColor() const { return m_viewBackgroundColor; }
private:
void setRootLayerID(CoordinatedLayerID);
void createLayers(const Vector<CoordinatedLayerID>&);
void deleteLayers(const Vector<CoordinatedLayerID>&);
void setLayerState(CoordinatedLayerID, const CoordinatedGraphicsLayerState&);
void setLayerChildrenIfNeeded(TextureMapperLayer*, const CoordinatedGraphicsLayerState&);
void updateTilesIfNeeded(TextureMapperLayer*, const CoordinatedGraphicsLayerState&);
void createTilesIfNeeded(TextureMapperLayer*, const CoordinatedGraphicsLayerState&);
void removeTilesIfNeeded(TextureMapperLayer*, const CoordinatedGraphicsLayerState&);
void setLayerFiltersIfNeeded(TextureMapperLayer*, const CoordinatedGraphicsLayerState&);
void setLayerAnimationsIfNeeded(TextureMapperLayer*, const CoordinatedGraphicsLayerState&);
#if USE(GRAPHICS_SURFACE)
void createPlatformLayerIfNeeded(TextureMapperLayer*, const CoordinatedGraphicsLayerState&);
void syncPlatformLayerIfNeeded(TextureMapperLayer*, const CoordinatedGraphicsLayerState&);
void destroyPlatformLayerIfNeeded(TextureMapperLayer*, const CoordinatedGraphicsLayerState&);
#endif
void setLayerRepaintCountIfNeeded(TextureMapperLayer*, const CoordinatedGraphicsLayerState&);
void syncUpdateAtlases(const CoordinatedGraphicsState&);
void createUpdateAtlas(uint32_t atlasID, PassRefPtr<CoordinatedSurface>);
void removeUpdateAtlas(uint32_t atlasID);
void syncImageBackings(const CoordinatedGraphicsState&);
void createImageBacking(CoordinatedImageBackingID);
void updateImageBacking(CoordinatedImageBackingID, PassRefPtr<CoordinatedSurface>);
void clearImageBackingContents(CoordinatedImageBackingID);
void removeImageBacking(CoordinatedImageBackingID);
TextureMapperLayer* layerByID(CoordinatedLayerID id)
{
ASSERT(m_layers.contains(id));
ASSERT(id != InvalidCoordinatedLayerID);
return m_layers.get(id);
}
TextureMapperLayer* getLayerByIDIfExists(CoordinatedLayerID);
TextureMapperLayer* rootLayer() { return m_rootLayer.get(); }
void syncRemoteContent();
void adjustPositionForFixedLayers();
void dispatchOnMainThread(std::function<void()>);
void updateViewport();
void renderNextFrame();
void purgeBackingStores();
void createLayer(CoordinatedLayerID);
void deleteLayer(CoordinatedLayerID);
void assignImageBackingToLayer(TextureMapperLayer*, CoordinatedImageBackingID);
void removeReleasedImageBackingsIfNeeded();
void ensureRootLayer();
void commitPendingBackingStoreOperations();
void prepareContentBackingStore(TextureMapperLayer*);
void createBackingStoreIfNeeded(TextureMapperLayer*);
void removeBackingStoreIfNeeded(TextureMapperLayer*);
void resetBackingStoreSizeToLayerSize(TextureMapperLayer*);
void dispatchCommitScrollOffset(uint32_t layerID, const IntSize& offset);
// Render queue can be accessed ony from main thread or updatePaintNode call stack!
Vector<std::function<void()>> m_renderQueue;
Mutex m_renderQueueMutex;
std::unique_ptr<TextureMapper> m_textureMapper;
typedef HashMap<CoordinatedImageBackingID, RefPtr<CoordinatedBackingStore> > ImageBackingMap;
ImageBackingMap m_imageBackings;
Vector<RefPtr<CoordinatedBackingStore> > m_releasedImageBackings;
typedef HashMap<TextureMapperLayer*, RefPtr<CoordinatedBackingStore> > BackingStoreMap;
BackingStoreMap m_backingStores;
HashSet<RefPtr<CoordinatedBackingStore> > m_backingStoresWithPendingBuffers;
#if USE(GRAPHICS_SURFACE)
typedef HashMap<TextureMapperLayer*, RefPtr<TextureMapperSurfaceBackingStore> > SurfaceBackingStoreMap;
SurfaceBackingStoreMap m_surfaceBackingStores;
#endif
typedef HashMap<uint32_t /* atlasID */, RefPtr<CoordinatedSurface> > SurfaceMap;
SurfaceMap m_surfaces;
// Below two members are accessed by only the main thread. The painting thread must lock the main thread to access both members.
CoordinatedGraphicsSceneClient* m_client;
bool m_isActive;
std::unique_ptr<TextureMapperLayer> m_rootLayer;
typedef HashMap<CoordinatedLayerID, std::unique_ptr<TextureMapperLayer>> LayerMap;
LayerMap m_layers;
typedef HashMap<CoordinatedLayerID, TextureMapperLayer*> LayerRawPtrMap;
LayerRawPtrMap m_fixedLayers;
CoordinatedLayerID m_rootLayerID;
FloatPoint m_scrollPosition;
FloatPoint m_renderedContentsScrollPosition;
Color m_viewBackgroundColor;
TextureMapperFPSCounter m_fpsCounter;
};
} // namespace WebCore
#endif // USE(COORDINATED_GRAPHICS)
#endif // CoordinatedGraphicsScene_h
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