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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 "GenericCallback.h"
#include "MessageReceiver.h"
#include <WebCore/FloatRect.h>
#include <WebCore/IntRect.h>
#include <WebCore/IntSize.h>
#include <chrono>
#include <stdint.h>
#include <wtf/Noncopyable.h>
#include <wtf/RunLoop.h>
namespace WebKit {
class LayerTreeContext;
class CoordinatedLayerTreeHostProxy;
class UpdateInfo;
class WebPageProxy;
class DrawingAreaProxy : public IPC::MessageReceiver {
WTF_MAKE_NONCOPYABLE(DrawingAreaProxy);
public:
virtual ~DrawingAreaProxy();
DrawingAreaType type() const { return m_type; }
virtual void deviceScaleFactorDidChange() = 0;
// FIXME: These should be pure virtual.
virtual void setBackingStoreIsDiscardable(bool) { }
virtual void waitForBackingStoreUpdateOnNextPaint() { }
const WebCore::IntSize& size() const { return m_size; }
void setSize(const WebCore::IntSize&, const WebCore::IntSize&, const WebCore::IntSize& scrollOffset);
// The timeout we use when waiting for a DidUpdateGeometry message.
static constexpr std::chrono::milliseconds didUpdateBackingStoreStateTimeout() { return std::chrono::milliseconds(500); }
virtual void waitForPossibleGeometryUpdate(std::chrono::milliseconds = didUpdateBackingStoreStateTimeout()) { }
virtual void colorSpaceDidChange() { }
virtual void minimumLayoutSizeDidChange() { }
virtual void adjustTransientZoom(double, WebCore::FloatPoint) { }
virtual void commitTransientZoom(double, WebCore::FloatPoint) { }
#if PLATFORM(MAC)
virtual void setExposedRect(const WebCore::FloatRect&);
WebCore::FloatRect exposedRect() const { return m_exposedRect; }
#endif
#if PLATFORM(COCOA)
void exposedRectChangedTimerFired();
#endif
virtual void updateDebugIndicator() { }
virtual void waitForDidUpdateViewState() { }
virtual void dispatchAfterEnsuringDrawing(std::function<void (CallbackBase::Error)>) { ASSERT_NOT_REACHED(); }
virtual void hideContentUntilNextUpdate() { ASSERT_NOT_REACHED(); }
protected:
explicit DrawingAreaProxy(DrawingAreaType, WebPageProxy&);
DrawingAreaType m_type;
WebPageProxy& m_webPageProxy;
WebCore::IntSize m_size;
WebCore::IntSize m_layerPosition;
WebCore::IntSize m_scrollOffset;
// IPC::MessageReceiver
virtual void didReceiveMessage(IPC::Connection*, IPC::MessageDecoder&) override;
private:
virtual void sizeDidChange() = 0;
// 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&) { }
virtual void enterAcceleratedCompositingMode(uint64_t /* backingStoreStateID */, const LayerTreeContext&) { }
virtual void exitAcceleratedCompositingMode(uint64_t /* backingStoreStateID */, const UpdateInfo&) { }
virtual void updateAcceleratedCompositingMode(uint64_t /* backingStoreStateID */, const LayerTreeContext&) { }
#if PLATFORM(COCOA)
virtual void didUpdateGeometry() { }
virtual void intrinsicContentSizeDidChange(const WebCore::IntSize& newIntrinsicContentSize) { }
#if PLATFORM(MAC)
RunLoop::Timer<DrawingAreaProxy> m_exposedRectChangedTimer;
WebCore::FloatRect m_exposedRect;
WebCore::FloatRect m_lastSentExposedRect;
#endif // PLATFORM(MAC)
#endif
};
#define DRAWING_AREA_PROXY_TYPE_CASTS(ToValueTypeName, predicate) \
TYPE_CASTS_BASE(ToValueTypeName, DrawingAreaProxy, value, value->predicate, value.predicate)
} // namespace WebKit
#endif // DrawingAreaProxy_h
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