1/*
2 * Copyright (C) 2010 Apple Inc. All rights reserved.
3 * Portions Copyright (c) 2010 Motorola Mobility, Inc.  All rights reserved.
4 * Copyright (C) 2011 Igalia S.L
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
17 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
19 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
25 * THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#ifndef ChunkedUpdateDrawingAreaProxy_h
29#define ChunkedUpdateDrawingAreaProxy_h
30
31#include "DrawingAreaProxy.h"
32#include <WebCore/IntSize.h>
33#include <wtf/PassOwnPtr.h>
34#include <wtf/OwnPtr.h>
35
36#if PLATFORM(MAC)
37#include <wtf/RetainPtr.h>
38OBJC_CLASS WKView;
39#elif PLATFORM(QT)
40#include <QImage>
41class QGraphicsWKView;
42#elif PLATFORM(GTK)
43typedef struct _cairo_surface cairo_surface_t;
44#endif
45
46namespace WebKit {
47
48class UpdateChunk;
49class WebPageProxy;
50
51#if PLATFORM(MAC)
52typedef WKView PlatformWebView;
53#elif PLATFORM(WIN)
54class WebView;
55typedef WebView PlatformWebView;
56#elif PLATFORM(QT)
57typedef QGraphicsWKView PlatformWebView;
58#elif PLATFORM(GTK)
59class WebView;
60typedef WebView PlatformWebView;
61#endif
62
63class ChunkedUpdateDrawingAreaProxy : public DrawingAreaProxy {
64public:
65    static PassOwnPtr<ChunkedUpdateDrawingAreaProxy> create(PlatformWebView*, WebPageProxy*);
66
67    virtual ~ChunkedUpdateDrawingAreaProxy();
68
69private:
70    ChunkedUpdateDrawingAreaProxy(PlatformWebView*, WebPageProxy*);
71
72    WebPageProxy* page();
73
74    // DrawingAreaProxy
75    virtual void didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*);
76    virtual bool paint(const WebCore::IntRect&, PlatformDrawingContext);
77    virtual void sizeDidChange();
78    virtual void setPageIsVisible(bool isVisible);
79
80    void ensureBackingStore();
81    void invalidateBackingStore();
82    bool platformPaint(const WebCore::IntRect&, PlatformDrawingContext);
83    void drawUpdateChunkIntoBackingStore(UpdateChunk*);
84    void didSetSize(UpdateChunk*);
85    void deprecatedUpdate(UpdateChunk*);
86
87    void sendSetSize();
88
89    bool m_isWaitingForDidSetFrameNotification;
90    bool m_isVisible;
91    bool m_forceRepaintWhenResumingPainting;
92
93#if PLATFORM(MAC)
94    // BackingStore
95    RetainPtr<CGContextRef> m_bitmapContext;
96#elif PLATFORM(WIN)
97    // BackingStore
98    OwnPtr<HDC> m_backingStoreDC;
99    OwnPtr<HBITMAP> m_backingStoreBitmap;
100#elif PLATFORM(QT)
101    QImage m_backingStoreImage;
102#elif PLATFORM(GTK)
103    cairo_surface_t* m_backingStoreImage;
104#endif
105
106    PlatformWebView* m_webView;
107};
108
109} // namespace WebKit
110
111#endif // ChunkedUpdateDrawingAreaProxy_h
112