[cc] Rename all cc/ filenames to Chromium style

cc/CCLayerTreeHostImpl.h

-// Copyright 2011 The Chromium Authors. All rights reserved.
+// Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CCLayerTreeHostImpl_h
-#define CCLayerTreeHostImpl_h
-
-#include "base/basictypes.h"
-#include "base/time.h"
-#include "CCAnimationEvents.h"
-#include "CCInputHandler.h"
-#include "CCLayerSorter.h"
-#include "CCRenderPass.h"
-#include "CCRenderPassSink.h"
-#include "CCRenderer.h"
-#include "SkColor.h"
-#include <public/WebCompositorOutputSurfaceClient.h>
-#include <wtf/PassOwnPtr.h>
-#include <wtf/RefPtr.h>
-
-namespace cc {
-
-class CCCompletionEvent;
-class CCDebugRectHistory;
-class CCFrameRateCounter;
-class CCHeadsUpDisplayLayerImpl;
-class CCLayerImpl;
-class CCLayerTreeHostImplTimeSourceAdapter;
-class CCPageScaleAnimation;
-class CCRenderPassDrawQuad;
-class CCResourceProvider;
-struct RendererCapabilities;
-struct CCRenderingStats;
-
-// CCLayerTreeHost->CCProxy callback interface.
-class CCLayerTreeHostImplClient {
-public:
-    virtual void didLoseContextOnImplThread() = 0;
-    virtual void onSwapBuffersCompleteOnImplThread() = 0;
-    virtual void onVSyncParametersChanged(double monotonicTimebase, double intervalInSeconds) = 0;
-    virtual void onCanDrawStateChanged(bool canDraw) = 0;
-    virtual void setNeedsRedrawOnImplThread() = 0;
-    virtual void setNeedsCommitOnImplThread() = 0;
-    virtual void postAnimationEventsToMainThreadOnImplThread(scoped_ptr<CCAnimationEventsVector>, double wallClockTime) = 0;
-    virtual void releaseContentsTexturesOnImplThread() = 0;
-};
-
-// CCPinchZoomViewport models the bounds and offset of the viewport that is used during a pinch-zoom operation.
-// It tracks the layout-space dimensions of the viewport before any applied scale, and then tracks the layout-space
-// coordinates of the viewport respecting the pinch settings.
-class CCPinchZoomViewport {
-public:
-    CCPinchZoomViewport();
-
-    float totalPageScaleFactor() const;
-
-    void setPageScaleFactor(float factor) { m_pageScaleFactor = factor; }
-    float pageScaleFactor() const { return m_pageScaleFactor; }
-
-    void setPageScaleDelta(float delta);
-    float pageScaleDelta() const  { return m_pageScaleDelta; }
-
-    float minPageScaleFactor() const { return m_minPageScaleFactor; }
-    float maxPageScaleFactor() const { return m_maxPageScaleFactor; }
-
-    void setSentPageScaleDelta(float delta) { m_sentPageScaleDelta = delta; }
-    float sentPageScaleDelta() const { return m_sentPageScaleDelta; }
-
-    // Returns true if the passed parameters were different from those previously
-    // cached.
-    bool setPageScaleFactorAndLimits(float pageScaleFactor,
-                                     float minPageScaleFactor,
-                                     float maxPageScaleFactor);
-
-    // Returns the bounds and offset of the scaled and translated viewport to use for pinch-zoom.
-    FloatRect bounds() const;
-    const FloatPoint& scrollDelta() const { return m_pinchViewportScrollDelta; }
-
-    void setLayoutViewportSize(const FloatSize& size) { m_layoutViewportSize = size; }
-
-    // Apply the scroll offset in layout space to the offset of the pinch-zoom viewport. The viewport cannot be
-    // scrolled outside of the layout viewport bounds. Returns the component of the scroll that is un-applied due to
-    // this constraint.
-    FloatSize applyScroll(FloatSize&);
-
-    WebKit::WebTransformationMatrix implTransform() const;
-
-private:
-    float m_pageScaleFactor;
-    float m_pageScaleDelta;
-    float m_sentPageScaleDelta;
-    float m_maxPageScaleFactor;
-    float m_minPageScaleFactor;
-
-    FloatPoint m_pinchViewportScrollDelta;
-    FloatSize m_layoutViewportSize;
-};
-
-// CCLayerTreeHostImpl owns the CCLayerImpl tree as well as associated rendering state
-class CCLayerTreeHostImpl : public CCInputHandlerClient,
-                            public CCRendererClient,
-                            public WebKit::WebCompositorOutputSurfaceClient {
-    typedef std::vector<CCLayerImpl*> CCLayerList;
-
-public:
-    static scoped_ptr<CCLayerTreeHostImpl> create(const CCLayerTreeSettings&, CCLayerTreeHostImplClient*);
-    virtual ~CCLayerTreeHostImpl();
-
-    // CCInputHandlerClient implementation
-    virtual CCInputHandlerClient::ScrollStatus scrollBegin(const IntPoint&, CCInputHandlerClient::ScrollInputType) OVERRIDE;
-    virtual void scrollBy(const IntPoint&, const IntSize&) OVERRIDE;
-    virtual void scrollEnd() OVERRIDE;
-    virtual void pinchGestureBegin() OVERRIDE;
-    virtual void pinchGestureUpdate(float, const IntPoint&) OVERRIDE;
-    virtual void pinchGestureEnd() OVERRIDE;
-    virtual void startPageScaleAnimation(const IntSize& targetPosition, bool anchorPoint, float pageScale, double startTime, double duration) OVERRIDE;
-    virtual void scheduleAnimation() OVERRIDE;
-
-    struct FrameData : public CCRenderPassSink {
-        FrameData();
-        ~FrameData();
-
-        Vector<IntRect> occludingScreenSpaceRects;
-        CCRenderPassList renderPasses;
-        CCRenderPassIdHashMap renderPassesById;
-        CCLayerList* renderSurfaceLayerList;
-        CCLayerList willDrawLayers;
-
-        // CCRenderPassSink implementation.
-        virtual void appendRenderPass(scoped_ptr<CCRenderPass>) OVERRIDE;
-    };
-
-    // Virtual for testing.
-    virtual void beginCommit();
-    virtual void commitComplete();
-    virtual void animate(double monotonicTime, double wallClockTime);
-
-    // Returns false if problems occured preparing the frame, and we should try
-    // to avoid displaying the frame. If prepareToDraw is called,
-    // didDrawAllLayers must also be called, regardless of whether drawLayers is
-    // called between the two.
-    virtual bool prepareToDraw(FrameData&);
-    virtual void drawLayers(const FrameData&);
-    // Must be called if and only if prepareToDraw was called.
-    void didDrawAllLayers(const FrameData&);
-
-    // CCRendererClient implementation
-    virtual const IntSize& deviceViewportSize() const OVERRIDE;
-    virtual const CCLayerTreeSettings& settings() const OVERRIDE;
-    virtual void didLoseContext() OVERRIDE;
-    virtual void onSwapBuffersComplete() OVERRIDE;
-    virtual void setFullRootLayerDamage() OVERRIDE;
-    virtual void releaseContentsTextures() OVERRIDE;
-    virtual void setMemoryAllocationLimitBytes(size_t) OVERRIDE;
-
-    // WebCompositorOutputSurfaceClient implementation.
-    virtual void onVSyncParametersChanged(double monotonicTimebase, double intervalInSeconds) OVERRIDE;
-
-    // Implementation
-    bool canDraw();
-    CCGraphicsContext* context() const;
-
-    std::string layerTreeAsText() const;
-
-    void finishAllRendering();
-    int sourceAnimationFrameNumber() const;
-
-    bool initializeRenderer(scoped_ptr<CCGraphicsContext>);
-    bool isContextLost();
-    CCRenderer* renderer() { return m_renderer.get(); }
-    const RendererCapabilities& rendererCapabilities() const;
-
-    bool swapBuffers();
-
-    void readback(void* pixels, const IntRect&);
-
-    void setRootLayer(scoped_ptr<CCLayerImpl>);
-    CCLayerImpl* rootLayer() { return m_rootLayerImpl.get(); }
-
-    void setHudLayer(CCHeadsUpDisplayLayerImpl* layerImpl) { m_hudLayerImpl = layerImpl; }
-    CCHeadsUpDisplayLayerImpl* hudLayer() { return m_hudLayerImpl; }
-
-    // Release ownership of the current layer tree and replace it with an empty
-    // tree. Returns the root layer of the detached tree.
-    scoped_ptr<CCLayerImpl> detachLayerTree();
-
-    CCLayerImpl* rootScrollLayer() const { return m_rootScrollLayerImpl; }
-
-    bool visible() const { return m_visible; }
-    void setVisible(bool);
-
-    int sourceFrameNumber() const { return m_sourceFrameNumber; }
-    void setSourceFrameNumber(int frameNumber) { m_sourceFrameNumber = frameNumber; }
-
-    bool contentsTexturesPurged() const { return m_contentsTexturesPurged; }
-    void setContentsTexturesPurged();
-    void resetContentsTexturesPurged();
-    size_t memoryAllocationLimitBytes() const { return m_memoryAllocationLimitBytes; }
-
-    void setViewportSize(const IntSize& layoutViewportSize, const IntSize& deviceViewportSize);
-    const IntSize& layoutViewportSize() const { return m_layoutViewportSize; }
-
-    float deviceScaleFactor() const { return m_deviceScaleFactor; }
-    void setDeviceScaleFactor(float);
-
-    float pageScaleFactor() const;
-    void setPageScaleFactorAndLimits(float pageScaleFactor, float minPageScaleFactor, float maxPageScaleFactor);
-
-    scoped_ptr<CCScrollAndScaleSet> processScrollDeltas();
-    WebKit::WebTransformationMatrix implTransform() const;
-
-    void startPageScaleAnimation(const IntSize& tragetPosition, bool useAnchor, float scale, double durationSec);
-
-    SkColor backgroundColor() const { return m_backgroundColor; }
-    void setBackgroundColor(SkColor color) { m_backgroundColor = color; }
-
-    bool hasTransparentBackground() const { return m_hasTransparentBackground; }
-    void setHasTransparentBackground(bool transparent) { m_hasTransparentBackground = transparent; }
-
-    bool needsAnimateLayers() const { return m_needsAnimateLayers; }
-    void setNeedsAnimateLayers() { m_needsAnimateLayers = true; }
-
-    void setNeedsRedraw();
-
-    void renderingStats(CCRenderingStats*) const;
-
-    void updateRootScrollLayerImplTransform();
-
-    CCFrameRateCounter* fpsCounter() const { return m_fpsCounter.get(); }
-    CCDebugRectHistory* debugRectHistory() const { return m_debugRectHistory.get(); }
-    CCResourceProvider* resourceProvider() const { return m_resourceProvider.get(); }
-
-    class CullRenderPassesWithCachedTextures {
-    public:
-        bool shouldRemoveRenderPass(const CCRenderPassDrawQuad&, const FrameData&) const;
-
-        // Iterates from the root first, in order to remove the surfaces closest
-        // to the root with cached textures, and all surfaces that draw into
-        // them.
-        size_t renderPassListBegin(const CCRenderPassList& list) const { return list.size() - 1; }
-        size_t renderPassListEnd(const CCRenderPassList&) const { return 0 - 1; }
-        size_t renderPassListNext(size_t it) const { return it - 1; }
-
-        CullRenderPassesWithCachedTextures(CCRenderer& renderer) : m_renderer(renderer) { }
-    private:
-        CCRenderer& m_renderer;
-    };
-
-    class CullRenderPassesWithNoQuads {
-    public:
-        bool shouldRemoveRenderPass(const CCRenderPassDrawQuad&, const FrameData&) const;
-
-        // Iterates in draw order, so that when a surface is removed, and its
-        // target becomes empty, then its target can be removed also.
-        size_t renderPassListBegin(const CCRenderPassList&) const { return 0; }
-        size_t renderPassListEnd(const CCRenderPassList& list) const { return list.size(); }
-        size_t renderPassListNext(size_t it) const { return it + 1; }
-    };
-
-    template<typename RenderPassCuller>
-    static void removeRenderPasses(RenderPassCuller, FrameData&);
-
-protected:
-    CCLayerTreeHostImpl(const CCLayerTreeSettings&, CCLayerTreeHostImplClient*);
-
-    void animatePageScale(double monotonicTime);
-    void animateScrollbars(double monotonicTime);
-
-    // Exposed for testing.
-    void calculateRenderSurfaceLayerList(CCLayerList&);
-
-    // Virtual for testing.
-    virtual void animateLayers(double monotonicTime, double wallClockTime);
-
-    // Virtual for testing.
-    virtual base::TimeDelta lowFrequencyAnimationInterval() const;
-
-    CCLayerTreeHostImplClient* m_client;
-    int m_sourceFrameNumber;
-
-private:
-    void computeDoubleTapZoomDeltas(CCScrollAndScaleSet* scrollInfo);
-    void computePinchZoomDeltas(CCScrollAndScaleSet* scrollInfo);
-    void makeScrollAndScaleSet(CCScrollAndScaleSet* scrollInfo, const IntSize& scrollOffset, float pageScale);
-
-    void setPageScaleDelta(float);
-    void updateMaxScrollPosition();
-    void trackDamageForAllSurfaces(CCLayerImpl* rootDrawLayer, const CCLayerList& renderSurfaceLayerList);
-
-    // Returns false if the frame should not be displayed. This function should
-    // only be called from prepareToDraw, as didDrawAllLayers must be called
-    // if this helper function is called.
-    bool calculateRenderPasses(FrameData&);
-    void animateLayersRecursive(CCLayerImpl*, double monotonicTime, double wallClockTime, CCAnimationEventsVector*, bool& didAnimate, bool& needsAnimateLayers);
-    void setBackgroundTickingEnabled(bool);
-    IntSize contentSize() const;
-
-    void sendDidLoseContextRecursive(CCLayerImpl*);
-    void clearRenderSurfaces();
-    bool ensureRenderSurfaceLayerList();
-    void clearCurrentlyScrollingLayer();
-
-    void animateScrollbarsRecursive(CCLayerImpl*, double monotonicTime);
-
-    void dumpRenderSurfaces(std::string*, int indent, const CCLayerImpl*) const;
-
-    scoped_ptr<CCGraphicsContext> m_context;
-    OwnPtr<CCResourceProvider> m_resourceProvider;
-    OwnPtr<CCRenderer> m_renderer;
-    scoped_ptr<CCLayerImpl> m_rootLayerImpl;
-    CCLayerImpl* m_rootScrollLayerImpl;
-    CCLayerImpl* m_currentlyScrollingLayerImpl;
-    CCHeadsUpDisplayLayerImpl* m_hudLayerImpl;
-    int m_scrollingLayerIdFromPreviousTree;
-    bool m_scrollDeltaIsInScreenSpace;
-    CCLayerTreeSettings m_settings;
-    IntSize m_layoutViewportSize;
-    IntSize m_deviceViewportSize;
-    float m_deviceScaleFactor;
-    bool m_visible;
-    bool m_contentsTexturesPurged;
-    size_t m_memoryAllocationLimitBytes;
-
-    SkColor m_backgroundColor;
-    bool m_hasTransparentBackground;
-
-    // If this is true, it is necessary to traverse the layer tree ticking the animators.
-    bool m_needsAnimateLayers;
-    bool m_pinchGestureActive;
-    IntPoint m_previousPinchAnchor;
-
-    OwnPtr<CCPageScaleAnimation> m_pageScaleAnimation;
-
-    // This is used for ticking animations slowly when hidden.
-    OwnPtr<CCLayerTreeHostImplTimeSourceAdapter> m_timeSourceClientAdapter;
-
-    CCLayerSorter m_layerSorter;
-
-    // List of visible layers for the most recently prepared frame. Used for
-    // rendering and input event hit testing.
-    CCLayerList m_renderSurfaceLayerList;
-
-    CCPinchZoomViewport m_pinchZoomViewport;
-
-    OwnPtr<CCFrameRateCounter> m_fpsCounter;
-    OwnPtr<CCDebugRectHistory> m_debugRectHistory;
-
-    size_t m_numImplThreadScrolls;
-    size_t m_numMainThreadScrolls;
-
-    DISALLOW_COPY_AND_ASSIGN(CCLayerTreeHostImpl);
-};
-
-};
-
-#endif
+// Temporary forwarding header
+#include "cc/layer_tree_host_impl.h"