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/*
* Copyright (C) 2012-2018 Apple 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.
*/
#pragma once
#include "CallbackID.h"
#include "DrawingArea.h"
#include "GraphicsLayerCARemote.h"
#include "RemoteLayerTreeTransaction.h"
#include <WebCore/AnimationFrameRate.h>
#include <WebCore/GraphicsLayerClient.h>
#include <WebCore/Timer.h>
#include <atomic>
#include <dispatch/dispatch.h>
#include <wtf/HashMap.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class PlatformCALayer;
class ThreadSafeImageBufferFlusher;
class TiledBacking;
}
namespace WebKit {
class RemoteLayerTreeContext;
class RemoteLayerTreeDrawingArea : public DrawingArea, public WebCore::GraphicsLayerClient {
WTF_MAKE_TZONE_ALLOCATED(RemoteLayerTreeDrawingArea);
public:
static RefPtr<RemoteLayerTreeDrawingArea> create(WebPage& webPage, const WebPageCreationParameters& parameters)
{
return adoptRef(*new RemoteLayerTreeDrawingArea(webPage, parameters));
}
virtual ~RemoteLayerTreeDrawingArea();
TransactionID nextTransactionID() const { return m_currentTransactionID.next(); }
TransactionID lastCommittedTransactionID() const { return m_currentTransactionID; }
bool displayDidRefreshIsPending() const { return m_waitingForBackingStoreSwap; }
void gpuProcessConnectionWasDestroyed();
protected:
RemoteLayerTreeDrawingArea(WebPage&, const WebPageCreationParameters&);
void updateRendering();
private:
// DrawingArea
void setNeedsDisplay() final;
void setNeedsDisplayInRect(const WebCore::IntRect&) final;
void scroll(const WebCore::IntRect& scrollRect, const WebCore::IntSize& scrollDelta) final;
void updateGeometry(const WebCore::IntSize& viewSize, bool flushSynchronously, const WTF::MachSendRight& fencePort, CompletionHandler<void()>&&) final;
WebCore::GraphicsLayerFactory* graphicsLayerFactory() final;
void setRootCompositingLayer(WebCore::Frame&, WebCore::GraphicsLayer*) final;
void addRootFrame(WebCore::FrameIdentifier) final;
void removeRootFrame(WebCore::FrameIdentifier) final;
void triggerRenderingUpdate() final;
bool scheduleRenderingUpdate() final;
void renderingUpdateFramesPerSecondChanged() final;
void attachViewOverlayGraphicsLayer(WebCore::FrameIdentifier, WebCore::GraphicsLayer*) final;
void dispatchAfterEnsuringDrawing(IPC::AsyncReplyID) final;
virtual void willCommitLayerTree(RemoteLayerTreeTransaction&) { }
RefPtr<WebCore::DisplayRefreshMonitor> createDisplayRefreshMonitor(WebCore::PlatformDisplayID) final;
void setPreferredFramesPerSecond(WebCore::FramesPerSecond);
bool shouldUseTiledBackingForFrameView(const WebCore::LocalFrameView&) const final;
void updatePreferences(const WebPreferencesStore&) final;
bool supportsAsyncScrolling() const final { return true; }
bool usesDelegatedPageScaling() const override { return true; }
WebCore::DelegatedScrollingMode delegatedScrollingMode() const override;
void setLayerTreeStateIsFrozen(bool) final;
bool layerTreeStateIsFrozen() const final { return m_isRenderingSuspended; }
void updateRenderingWithForcedRepaint() final;
void updateRenderingWithForcedRepaintAsync(WebPage&, CompletionHandler<void()>&&) final;
void setViewExposedRect(std::optional<WebCore::FloatRect>) final;
std::optional<WebCore::FloatRect> viewExposedRect() const final { return m_viewExposedRect; }
void acceleratedAnimationDidStart(WebCore::PlatformLayerIdentifier, const String& key, MonotonicTime startTime) final;
void acceleratedAnimationDidEnd(WebCore::PlatformLayerIdentifier, const String& key) final;
WebCore::FloatRect exposedContentRect() const final;
void setExposedContentRect(const WebCore::FloatRect&) final;
void displayDidRefresh() final;
void setDeviceScaleFactor(float, CompletionHandler<void()>&&) final;
void mainFrameContentSizeChanged(WebCore::FrameIdentifier, const WebCore::IntSize&) override;
void activityStateDidChange(OptionSet<WebCore::ActivityState> changed, ActivityStateChangeID, CompletionHandler<void()>&&) final;
bool addMilestonesToDispatch(OptionSet<WebCore::LayoutMilestone>) final;
void updateRootLayers();
void addCommitHandlers();
void startRenderingUpdateTimer();
void didCompleteRenderingUpdateDisplayFlush(bool flushSucceeded);
TransactionID takeNextTransactionID() { return m_currentTransactionID.increment(); }
void tryMarkLayersVolatile(CompletionHandler<void(bool succeeded)>&&) final;
void adoptLayersFromDrawingArea(DrawingArea&) final;
void setNextRenderingUpdateRequiresSynchronousImageDecoding() final;
void scheduleRenderingUpdateTimerFired();
class BackingStoreFlusher : public ThreadSafeRefCounted<BackingStoreFlusher> {
public:
static Ref<BackingStoreFlusher> create(Ref<IPC::Connection>&&);
// Returns true when flush succeeds. False if it failed, for example due to timeout.
bool flush(UniqueRef<IPC::Encoder>&&, Vector<std::unique_ptr<ThreadSafeImageBufferSetFlusher>>&&);
bool hasPendingFlush() const { return m_hasPendingFlush; }
void markHasPendingFlush()
{
bool hadPendingFlush = m_hasPendingFlush.exchange(true);
RELEASE_ASSERT(!hadPendingFlush);
}
private:
explicit BackingStoreFlusher(Ref<IPC::Connection>&&);
const Ref<IPC::Connection> m_connection;
std::atomic<bool> m_hasPendingFlush { false };
};
const Ref<RemoteLayerTreeContext> m_remoteLayerTreeContext;
struct RootLayerInfo {
const Ref<WebCore::GraphicsLayer> layer;
RefPtr<WebCore::GraphicsLayer> contentLayer;
RefPtr<WebCore::GraphicsLayer> viewOverlayRootLayer;
WebCore::FrameIdentifier frameID;
};
RootLayerInfo* rootLayerInfoWithFrameIdentifier(WebCore::FrameIdentifier);
Vector<RootLayerInfo, 1> m_rootLayers;
std::optional<WebCore::FloatRect> m_viewExposedRect;
WebCore::Timer m_updateRenderingTimer;
bool m_isRenderingSuspended { false };
bool m_hasDeferredRenderingUpdate { false };
bool m_inUpdateRendering { false };
bool m_waitingForBackingStoreSwap { false };
bool m_deferredRenderingUpdateWhileWaitingForBackingStoreSwap { false };
const Ref<WorkQueue> m_commitQueue;
RefPtr<BackingStoreFlusher> m_backingStoreFlusher;
TransactionID m_currentTransactionID { TransactionID::generateMonotonic() };
Vector<IPC::AsyncReplyID> m_pendingCallbackIDs;
ActivityStateChangeID m_activityStateChangeID { ActivityStateChangeAsynchronous };
OptionSet<WebCore::LayoutMilestone> m_pendingNewlyReachedPaintingMilestones;
WebCore::Timer m_scheduleRenderingTimer;
std::optional<WebCore::FramesPerSecond> m_preferredFramesPerSecond;
Seconds m_preferredRenderingUpdateInterval;
bool m_isScheduled { false };
};
inline bool RemoteLayerTreeDrawingArea::addMilestonesToDispatch(OptionSet<WebCore::LayoutMilestone> paintMilestones)
{
m_pendingNewlyReachedPaintingMilestones.add(paintMilestones);
return true;
}
} // namespace WebKit
SPECIALIZE_TYPE_TRAITS_DRAWING_AREA(RemoteLayerTreeDrawingArea, DrawingAreaType::RemoteLayerTree)
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