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/*
* Copyright (C) 2011-2025 Apple Inc. All rights reserved.
* Copyright (C) 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
#if USE(COORDINATED_GRAPHICS)
#include "CallbackID.h"
#include "LayerTreeContext.h"
#include "ThreadedCompositor.h"
#include <WebCore/CoordinatedImageBackingStore.h>
#include <WebCore/CoordinatedPlatformLayer.h>
#include <WebCore/FloatPoint.h>
#include <WebCore/GraphicsLayerClient.h>
#include <WebCore/GraphicsLayerFactory.h>
#include <WebCore/PlatformScreen.h>
#include <WebCore/RunLoopObserver.h>
#include <wtf/CheckedRef.h>
#include <wtf/Forward.h>
#include <wtf/Lock.h>
#include <wtf/OptionSet.h>
#include <wtf/RunLoop.h>
#include <wtf/TZoneMalloc.h>
#if ENABLE(DAMAGE_TRACKING)
#include <WebCore/Region.h>
#endif
namespace WebCore {
class Damage;
class IntRect;
class IntSize;
class GraphicsLayer;
class GraphicsLayerFactory;
class NativeImage;
class SkiaPaintingEngine;
#if USE(CAIRO)
namespace Cairo {
class PaintingEngine;
}
#endif
}
namespace WebKit {
class CoordinatedSceneState;
class WebPage;
struct RenderProcessInfo;
class LayerTreeHost final : public CanMakeCheckedPtr<LayerTreeHost>, public WebCore::GraphicsLayerFactory, public WebCore::CoordinatedPlatformLayer::Client
{
WTF_MAKE_TZONE_ALLOCATED(LayerTreeHost);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(LayerTreeHost);
public:
explicit LayerTreeHost(WebPage&);
~LayerTreeHost();
WebPage& webPage() const { return m_webPage; }
CoordinatedSceneState& sceneState() const { return m_sceneState.get(); }
const LayerTreeContext& layerTreeContext() const { return m_layerTreeContext; }
void setLayerTreeStateIsFrozen(bool);
void setRootCompositingLayer(WebCore::GraphicsLayer*);
void setViewOverlayRootLayer(WebCore::GraphicsLayer*);
void scheduleRenderingUpdate();
void updateRenderingWithForcedRepaint();
void updateRenderingWithForcedRepaintAsync(CompletionHandler<void()>&&);
void sizeDidChange();
void pauseRendering();
void resumeRendering();
WebCore::GraphicsLayerFactory* graphicsLayerFactory();
void backgroundColorDidChange();
void willRenderFrame();
void didRenderFrame();
#if PLATFORM(GTK)
void adjustTransientZoom(double, WebCore::FloatPoint);
void commitTransientZoom(double, WebCore::FloatPoint);
#endif
void ensureDrawing();
#if ENABLE(DAMAGE_TRACKING)
void notifyFrameDamageForTesting(WebCore::Region&&);
void resetDamageHistoryForTesting();
void foreachRegionInDamageHistoryForTesting(Function<void(const WebCore::Region&)>&&);
#endif
#if PLATFORM(WPE) && ENABLE(WPE_PLATFORM) && (USE(GBM) || OS(ANDROID))
void preferredBufferFormatsDidChange();
#endif
void fillGLInformation(RenderProcessInfo&&, CompletionHandler<void(RenderProcessInfo&&)>&&);
private:
void updateRootLayer();
WebCore::FloatRect visibleContentsRect() const;
void scheduleRenderingUpdateRunLoopObserver();
void invalidateRenderingUpdateRunLoopObserver();
void renderingUpdateRunLoopObserverFired();
void updateRendering();
void requestCompositionForRenderingUpdate();
// CoordinatedPlatformLayer::Client
#if USE(CAIRO)
WebCore::Cairo::PaintingEngine& paintingEngine() override;
#elif USE(SKIA)
WebCore::SkiaPaintingEngine& paintingEngine() const override { return *m_skiaPaintingEngine.get(); }
#endif
Ref<WebCore::CoordinatedImageBackingStore> imageBackingStore(Ref<WebCore::NativeImage>&&) override;
void attachLayer(WebCore::CoordinatedPlatformLayer&) override;
void detachLayer(WebCore::CoordinatedPlatformLayer&) override;
void notifyCompositionRequired() override;
bool isCompositionRequiredOrOngoing() const override;
void requestComposition(WebCore::CompositionReason) override;
RunLoop* compositingRunLoop() const override;
int maxTextureSize() const override;
void willPaintTile() override;
void didPaintTile() override;
// GraphicsLayerFactory
Ref<WebCore::GraphicsLayer> createGraphicsLayer(WebCore::GraphicsLayer::Type, WebCore::GraphicsLayerClient&) override;
#if PLATFORM(GTK)
WebCore::FloatPoint constrainTransientZoomOrigin(double, WebCore::FloatPoint) const;
WebCore::CoordinatedPlatformLayer* layerForTransientZoom() const;
void applyTransientZoomToLayers(double, WebCore::FloatPoint);
#endif
WebPage& m_webPage;
LayerTreeContext m_layerTreeContext;
const Ref<CoordinatedSceneState> m_sceneState;
WebCore::GraphicsLayer* m_rootCompositingLayer { nullptr };
WebCore::GraphicsLayer* m_overlayCompositingLayer { nullptr };
bool m_layerTreeStateIsFrozen { false };
bool m_pendingResize { false };
bool m_pendingForceRepaint { false };
bool m_isUpdatingRendering { false };
bool m_waitUntilPaintingComplete { false };
bool m_isSuspended { false };
bool m_isWaitingForRenderer { false };
bool m_scheduledWhileWaitingForRenderer { false };
bool m_forceFrameSync { false };
bool m_compositionRequired { false };
#if ENABLE(SCROLLING_THREAD)
bool m_compositionRequiredInScrollingThread { false };
#endif
RefPtr<ThreadedCompositor> m_compositor;
struct {
CompletionHandler<void()> callback;
std::optional<uint32_t> compositionRequestID;
} m_forceRepaintAsync;
std::unique_ptr<WebCore::RunLoopObserver> m_renderingUpdateRunLoopObserver;
#if USE(CAIRO)
std::unique_ptr<WebCore::Cairo::PaintingEngine> m_paintingEngine;
#elif USE(SKIA)
std::unique_ptr<WebCore::SkiaPaintingEngine> m_skiaPaintingEngine;
#endif
HashMap<uint64_t, Ref<WebCore::CoordinatedImageBackingStore>> m_imageBackingStores;
#if PLATFORM(GTK)
bool m_transientZoom { false };
double m_transientZoomScale { 1 };
WebCore::FloatPoint m_transientZoomOrigin;
#endif
#if ENABLE(DAMAGE_TRACKING)
Lock m_frameDamageHistoryForTestingLock;
Vector<WebCore::Region> m_frameDamageHistoryForTesting WTF_GUARDED_BY_LOCK(m_frameDamageHistoryForTestingLock);
std::shared_ptr<WebCore::Damage> m_damageInGlobalCoordinateSpace;
#endif
};
} // namespace WebKit
#endif // USE(COORDINATED_GRAPHICS)
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