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/*
* Copyright (C) 2010 Apple Inc. All rights reserved.
* Portions Copyright (c) 2010 Motorola Mobility, 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 INC. 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 INC. 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 DrawingAreaProxy_h
#define DrawingAreaProxy_h
#include "DrawingAreaInfo.h"
#include <stdint.h>
#include <WebCore/IntSize.h>
#include <wtf/Noncopyable.h>
#if PLATFORM(QT)
class QPainter;
#elif PLATFORM(GTK)
typedef struct _cairo cairo_t;
#endif
namespace CoreIPC {
class ArgumentDecoder;
class Connection;
class MessageID;
}
namespace WebCore {
class IntRect;
}
namespace WebKit {
class LayerTreeContext;
class UpdateInfo;
class WebPageProxy;
#if PLATFORM(MAC)
typedef CGContextRef PlatformDrawingContext;
#elif PLATFORM(WIN)
typedef HDC PlatformDrawingContext;
#elif PLATFORM(QT)
typedef QPainter* PlatformDrawingContext;
#elif PLATFORM(GTK)
typedef cairo_t* PlatformDrawingContext;
#endif
class DrawingAreaProxy {
WTF_MAKE_NONCOPYABLE(DrawingAreaProxy);
public:
virtual ~DrawingAreaProxy();
DrawingAreaType type() const { return m_type; }
#if PLATFORM(MAC) || PLATFORM(WIN)
void didReceiveDrawingAreaProxyMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*);
#endif
virtual void didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*) = 0;
// Returns true if painting was successful, false otherwise.
virtual bool paint(const WebCore::IntRect&, PlatformDrawingContext) = 0;
virtual void sizeDidChange() = 0;
// FIXME: visibilityDidChange() should be pure virtual.
virtual void visibilityDidChange() { }
virtual void setPageIsVisible(bool isVisible) = 0;
const WebCore::IntSize& size() const { return m_size; }
void setSize(const WebCore::IntSize&, const WebCore::IntSize& scrollOffset);
protected:
explicit DrawingAreaProxy(DrawingAreaType, WebPageProxy*);
DrawingAreaType m_type;
WebPageProxy* m_webPageProxy;
WebCore::IntSize m_size;
WebCore::IntSize m_scrollOffset;
private:
// CoreIPC message handlers.
// FIXME: These should be pure virtual.
virtual void update(uint64_t backingStoreStateID, const UpdateInfo&) { }
virtual void didUpdateBackingStoreState(uint64_t backingStoreStateID, const UpdateInfo&, const LayerTreeContext&) { }
#if USE(ACCELERATED_COMPOSITING)
virtual void enterAcceleratedCompositingMode(uint64_t backingStoreStateID, const LayerTreeContext&) { }
virtual void exitAcceleratedCompositingMode(uint64_t backingStoreStateID, const UpdateInfo&) { }
#endif
};
} // namespace WebKit
#endif // DrawingAreaProxy_h
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