2 * Copyright (C) 2010 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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26 #ifndef DrawingAreaProxyUpdateChunk_h
27 #define DrawingAreaProxyUpdateChunk_h
29 #include "DrawingAreaProxy.h"
30 #include <WebCore/IntSize.h>
33 #include <wtf/RetainPtr.h>
41 class QGraphicsWKView;
50 typedef WKView PlatformWebView;
53 typedef WebView PlatformWebView;
55 typedef QGraphicsWKView PlatformWebView;
58 class ChunkedUpdateDrawingAreaProxy : public DrawingAreaProxy {
60 ChunkedUpdateDrawingAreaProxy(PlatformWebView*);
61 virtual ~ChunkedUpdateDrawingAreaProxy();
63 // The DrawingAreaProxy should never be decoded itself. Instead, the DrawingArea should be decoded.
64 virtual void encode(CoreIPC::ArgumentEncoder& encoder) const
66 DrawingAreaProxy::encode(encoder);
73 virtual void didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder&);
74 virtual void paint(const WebCore::IntRect&, PlatformDrawingContext);
75 virtual void setSize(const WebCore::IntSize&);
76 virtual void setPageIsVisible(bool isVisible);
78 void ensureBackingStore();
79 void invalidateBackingStore();
80 void platformPaint(const WebCore::IntRect&, PlatformDrawingContext);
81 void drawUpdateChunkIntoBackingStore(UpdateChunk*);
82 void didSetSize(UpdateChunk*);
83 void update(UpdateChunk*);
85 #if USE(ACCELERATED_COMPOSITING)
86 virtual void attachCompositingContext(uint32_t) { }
87 virtual void detachCompositingContext() { }
90 bool m_isWaitingForDidSetFrameNotification;
93 WebCore::IntSize m_viewSize; // Size of the BackingStore as well.
94 WebCore::IntSize m_lastSetViewSize;
98 RetainPtr<CGContextRef> m_bitmapContext;
101 OwnPtr<HDC> m_backingStoreDC;
102 OwnPtr<HBITMAP> m_backingStoreBitmap;
104 QImage m_backingStoreImage;
107 PlatformWebView* m_webView;
110 } // namespace WebKit
112 #endif // DrawingAreaProxyUpdateChunk_h