Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/graphics/Canvas2DLayerBridge.h

-/*
- * Copyright (C) 2012 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1.  Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- * 2.  Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef Canvas2DLayerBridge_h
-#define Canvas2DLayerBridge_h
-
-#include "SkDeferredCanvas.h"
-#include "SkImage.h"
-#include "core/platform/graphics/GraphicsContext3D.h"
-#include "platform/geometry/IntSize.h"
-#include "public/platform/WebExternalTextureLayer.h"
-#include "public/platform/WebExternalTextureLayerClient.h"
-#include "public/platform/WebExternalTextureMailbox.h"
-#include "wtf/DoublyLinkedList.h"
-#include "wtf/PassOwnPtr.h"
-#include "wtf/RefPtr.h"
-
-namespace blink {
-class WebGraphicsContext3D;
-}
-
-namespace WebCore {
-
-class Canvas2DLayerBridge;
-class PassCanvas2DLayerBridgePtr;
-
-class Canvas2DLayerBridgePtr {
-public:
-    Canvas2DLayerBridgePtr() { }
-    Canvas2DLayerBridgePtr(const PassRefPtr<Canvas2DLayerBridge>& ptr) { m_ptr = ptr; }
-    ~Canvas2DLayerBridgePtr() { clear(); }
-    Canvas2DLayerBridge* operator->() const { return m_ptr.get(); }
-    Canvas2DLayerBridgePtr& operator=(const PassRefPtr<Canvas2DLayerBridge>&);
-    Canvas2DLayerBridge* get() const { return m_ptr.get(); }
-    operator bool () const { return m_ptr; }
-    void clear();
-    PassRefPtr<Canvas2DLayerBridge> release() WARN_UNUSED_RETURN { return m_ptr.release(); }
-private:
-    RefPtr<Canvas2DLayerBridge> m_ptr;
-};
-
-class Canvas2DLayerBridge : public blink::WebExternalTextureLayerClient, public SkDeferredCanvas::NotificationClient, public DoublyLinkedListNode<Canvas2DLayerBridge>, public RefCounted<Canvas2DLayerBridge> {
-    WTF_MAKE_NONCOPYABLE(Canvas2DLayerBridge);
-public:
-    enum OpacityMode {
-        Opaque,
-        NonOpaque
-    };
-
-    static PassRefPtr<Canvas2DLayerBridge> create(PassRefPtr<GraphicsContext3D>, const IntSize&, OpacityMode, int msaaSampleCount);
-
-    virtual ~Canvas2DLayerBridge();
-
-    // blink::WebExternalTextureLayerClient implementation.
-    virtual blink::WebGraphicsContext3D* context() OVERRIDE;
-    virtual bool prepareMailbox(blink::WebExternalTextureMailbox*, blink::WebExternalBitmap*) OVERRIDE;
-    virtual void mailboxReleased(const blink::WebExternalTextureMailbox&) OVERRIDE;
-
-    // SkDeferredCanvas::NotificationClient implementation
-    virtual void prepareForDraw() OVERRIDE;
-    virtual void storageAllocatedForRecordingChanged(size_t) OVERRIDE;
-    virtual void flushedDrawCommands() OVERRIDE;
-    virtual void skippedPendingDrawCommands() OVERRIDE;
-
-    // Methods used by Canvas2DLayerManager
-    virtual size_t freeMemoryIfPossible(size_t); // virtual for mocking
-    virtual void flush(); // virtual for mocking
-    virtual size_t storageAllocatedForRecording(); // virtual for faking
-    size_t bytesAllocated() const {return m_bytesAllocated;}
-    void limitPendingFrames();
-
-    blink::WebLayer* layer();
-    void contextAcquired();
-    PassRefPtr<SkCanvas> getCanvas() { return PassRefPtr<SkCanvas>(m_canvas); }
-
-    unsigned backBufferTexture();
-
-    bool isValid();
-
-protected:
-    void destroy();
-    friend class Canvas2DLayerBridgePtr;
-    Canvas2DLayerBridge(PassRefPtr<GraphicsContext3D>, PassRefPtr<SkDeferredCanvas>, int, OpacityMode);
-    void setRateLimitingEnabled(bool);
-
-    RefPtr<SkDeferredCanvas> m_canvas;
-    OwnPtr<blink::WebExternalTextureLayer> m_layer;
-    RefPtr<GraphicsContext3D> m_context;
-    int m_msaaSampleCount;
-    size_t m_bytesAllocated;
-    bool m_didRecordDrawCommand;
-    bool m_surfaceIsValid;
-    int m_framesPending;
-    bool m_destructionInProgress;
-    bool m_rateLimitingEnabled;
-
-    friend class WTF::DoublyLinkedListNode<Canvas2DLayerBridge>;
-    Canvas2DLayerBridge* m_next;
-    Canvas2DLayerBridge* m_prev;
-
-    enum MailboxStatus {
-        MailboxInUse,
-        MailboxReleased,
-        MailboxAvailable,
-    };
-
-    struct MailboxInfo {
-        blink::WebExternalTextureMailbox m_mailbox;
-        SkAutoTUnref<SkImage> m_image;
-        MailboxStatus m_status;
-        RefPtr<Canvas2DLayerBridge> m_parentLayerBridge;
-
-        MailboxInfo(const MailboxInfo&);
-        MailboxInfo() {}
-    };
-    MailboxInfo* createMailboxInfo();
-
-    uint32_t m_lastImageId;
-    Vector<MailboxInfo> m_mailboxes;
-};
-}
-#endif