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/*
* Copyright (C) 2011 Apple Inc. All rights reserved.
* Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies).
* Copyright (C) 2016-2019 Igalia S.L.
*
* 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.
*/
#pragma once
#include "BackingStore.h"
#include "DrawingAreaProxy.h"
#include "LayerTreeContext.h"
#include <wtf/RunLoop.h>
namespace WebCore {
class Region;
}
namespace WebKit {
class DrawingAreaProxyCoordinatedGraphics final : public DrawingAreaProxy {
public:
DrawingAreaProxyCoordinatedGraphics(WebPageProxy&);
virtual ~DrawingAreaProxyCoordinatedGraphics();
#if !PLATFORM(WPE)
void paint(BackingStore::PlatformGraphicsContext, const WebCore::IntRect&, WebCore::Region& unpaintedRegion);
#endif
bool isInAcceleratedCompositingMode() const { return !m_layerTreeContext.isEmpty(); }
const LayerTreeContext& layerTreeContext() const { return m_layerTreeContext; }
void dispatchAfterEnsuringDrawing(CompletionHandler<void()>&&);
private:
// DrawingAreaProxy
void sizeDidChange() override;
void deviceScaleFactorDidChange() override;
void waitForBackingStoreUpdateOnNextPaint() override;
void setBackingStoreIsDiscardable(bool) override;
#if PLATFORM(GTK)
void adjustTransientZoom(double scale, WebCore::FloatPoint origin) override;
void commitTransientZoom(double scale, WebCore::FloatPoint origin) override;
#endif
// IPC message handlers
void update(uint64_t backingStoreStateID, UpdateInfo&&) override;
void enterAcceleratedCompositingMode(uint64_t backingStoreStateID, const LayerTreeContext&) override;
void exitAcceleratedCompositingMode(uint64_t backingStoreStateID, UpdateInfo&&) override;
void updateAcceleratedCompositingMode(uint64_t backingStoreStateID, const LayerTreeContext&) override;
void targetRefreshRateDidChange(unsigned) override;
bool shouldSendWheelEventsToEventDispatcher() const override { return true; }
bool alwaysUseCompositing() const;
void enterAcceleratedCompositingMode(const LayerTreeContext&);
void exitAcceleratedCompositingMode();
void updateAcceleratedCompositingMode(const LayerTreeContext&);
void sendUpdateGeometry();
void didUpdateGeometry();
#if !PLATFORM(WPE)
bool forceUpdateIfNeeded();
void incorporateUpdate(UpdateInfo&&);
void discardBackingStoreSoon();
void discardBackingStore();
#endif
class DrawingMonitor {
WTF_MAKE_NONCOPYABLE(DrawingMonitor); WTF_MAKE_FAST_ALLOCATED;
public:
DrawingMonitor(WebPageProxy&);
~DrawingMonitor();
void start(CompletionHandler<void()>&&);
private:
static int webViewDrawCallback(DrawingMonitor*);
void stop();
void didDraw();
MonotonicTime m_startTime;
CompletionHandler<void()> m_callback;
RunLoop::Timer m_timer;
#if PLATFORM(GTK)
WebPageProxy& m_webPage;
#endif
};
// The current layer tree context.
LayerTreeContext m_layerTreeContext;
// For a new Drawing Area don't draw anything until the WebProcess has sent over the first content.
bool m_hasReceivedFirstUpdate { false };
// Whether we're waiting for a DidUpdateGeometry message from the web process.
bool m_isWaitingForDidUpdateGeometry { false };
// The last size we sent to the web process.
WebCore::IntSize m_lastSentSize;
#if !PLATFORM(WPE)
bool m_isBackingStoreDiscardable { true };
bool m_inForceUpdate { false };
std::unique_ptr<BackingStore> m_backingStore;
RunLoop::Timer m_discardBackingStoreTimer;
#endif
std::unique_ptr<DrawingMonitor> m_drawingMonitor;
};
} // namespace WebKit
SPECIALIZE_TYPE_TRAITS_DRAWING_AREA_PROXY(DrawingAreaProxyCoordinatedGraphics, DrawingAreaType::CoordinatedGraphics)
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