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      1 /*
      2  * Copyright (C) 2009 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef CACFLayerTreeHost_h
     27 #define CACFLayerTreeHost_h
     28 
     29 #if USE(ACCELERATED_COMPOSITING)
     30 
     31 #include "AbstractCACFLayerTreeHost.h"
     32 #include "COMPtr.h"
     33 #include "Timer.h"
     34 
     35 #include <wtf/HashSet.h>
     36 #include <wtf/PassRefPtr.h>
     37 #include <wtf/RefCounted.h>
     38 #include <wtf/RefPtr.h>
     39 #include <wtf/RetainPtr.h>
     40 #include <wtf/Vector.h>
     41 
     42 #include <CoreGraphics/CGGeometry.h>
     43 
     44 interface IDirect3DDevice9;
     45 struct WKCACFContext;
     46 
     47 typedef struct CGImage* CGImageRef;
     48 
     49 namespace WebCore {
     50 
     51 class CACFLayerTreeHostClient;
     52 class PlatformCALayer;
     53 
     54 class CACFLayerTreeHost : public RefCounted<CACFLayerTreeHost>, private AbstractCACFLayerTreeHost {
     55 public:
     56     static PassRefPtr<CACFLayerTreeHost> create();
     57     virtual ~CACFLayerTreeHost();
     58 
     59     static bool acceleratedCompositingAvailable();
     60 
     61     void setClient(CACFLayerTreeHostClient* client) { m_client = client; }
     62 
     63     void setRootChildLayer(PlatformCALayer*);
     64     void setWindow(HWND);
     65     virtual void paint();
     66     virtual void resize() = 0;
     67     void flushPendingGraphicsLayerChangesSoon();
     68 
     69     // AbstractCACFLayerTreeHost
     70     virtual void flushPendingLayerChangesNow();
     71 
     72 protected:
     73     CACFLayerTreeHost();
     74 
     75     CGRect bounds() const;
     76     HWND window() const { return m_window; }
     77     void notifyAnimationsStarted();
     78 
     79     // AbstractCACFLayerTreeHost
     80     virtual PlatformCALayer* rootLayer() const;
     81 
     82     virtual bool createRenderer() = 0;
     83     virtual void destroyRenderer();
     84     virtual void contextDidChange();
     85 
     86 private:
     87     void initialize();
     88 
     89     // AbstractCACFLayerTreeHost
     90     virtual void addPendingAnimatedLayer(PassRefPtr<PlatformCALayer>);
     91     virtual void layerTreeDidChange();
     92 
     93 
     94     virtual void flushContext() = 0;
     95     virtual CFTimeInterval lastCommitTime() const = 0;
     96     virtual void render(const Vector<CGRect>& dirtyRects = Vector<CGRect>()) = 0;
     97     virtual void initializeContext(void* userData, PlatformCALayer*) = 0;
     98 
     99     CACFLayerTreeHostClient* m_client;
    100     RefPtr<PlatformCALayer> m_rootLayer;
    101     RefPtr<PlatformCALayer> m_rootChildLayer;
    102     HashSet<RefPtr<PlatformCALayer> > m_pendingAnimatedLayers;
    103     HWND m_window;
    104     bool m_shouldFlushPendingGraphicsLayerChanges;
    105     bool m_isFlushingLayerChanges;
    106 
    107 #if !ASSERT_DISABLED
    108     enum { WindowNotSet, WindowSet, WindowCleared } m_state;
    109 #endif
    110 };
    111 
    112 }
    113 
    114 #endif // USE(ACCELERATED_COMPOSITING)
    115 
    116 #endif // CACFLayerTreeHost_h
    117