/* * Copyright (C) 2011 Apple Inc. All rights reserved. * Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies). * Copyright (C) 2016 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 "DrawingAreaProxy.h" #include "LayerTreeContext.h" namespace WebKit { class AcceleratedDrawingAreaProxy : public DrawingAreaProxy { public: explicit AcceleratedDrawingAreaProxy(WebPageProxy&); virtual ~AcceleratedDrawingAreaProxy(); bool isInAcceleratedCompositingMode() const { return alwaysUseCompositing() || !m_layerTreeContext.isEmpty(); } void visibilityDidChange(); #if USE(TEXTURE_MAPPER_GL) && PLATFORM(GTK) && PLATFORM(X11) && !USE(REDIRECTED_XCOMPOSITE_WINDOW) void setNativeSurfaceHandleForCompositing(uint64_t); void destroyNativeSurfaceHandleForCompositing(); #endif void dispatchAfterEnsuringDrawing(WTF::Function<void(CallbackBase::Error)>&&) override; protected: // DrawingAreaProxy void sizeDidChange() override; void deviceScaleFactorDidChange() override; void waitForBackingStoreUpdateOnNextPaint() override; // IPC message handlers void didUpdateBackingStoreState(uint64_t backingStoreStateID, const UpdateInfo&, const LayerTreeContext&) override; void enterAcceleratedCompositingMode(uint64_t backingStoreStateID, const LayerTreeContext&) override; void exitAcceleratedCompositingMode(uint64_t backingStoreStateID, const UpdateInfo&) override; void updateAcceleratedCompositingMode(uint64_t backingStoreStateID, const LayerTreeContext&) override; enum RespondImmediatelyOrNot { DoNotRespondImmediately, RespondImmediately }; void backingStoreStateDidChange(RespondImmediatelyOrNot); void sendUpdateBackingStoreState(RespondImmediatelyOrNot); void waitForAndDispatchDidUpdateBackingStoreState(); virtual void enterAcceleratedCompositingMode(const LayerTreeContext&); void exitAcceleratedCompositingMode(); void updateAcceleratedCompositingMode(const LayerTreeContext&); bool alwaysUseCompositing() const; // The state ID corresponding to our current backing store. Updated whenever we allocate // a new backing store. Any messages received that correspond to an earlier state are ignored, // as they don't apply to our current backing store. uint64_t m_currentBackingStoreStateID { 0 }; // The next backing store state ID we will request the web process update to. Incremented // whenever our state changes in a way that will require a new backing store to be allocated. uint64_t m_nextBackingStoreStateID { 0 }; // The current layer tree context. LayerTreeContext m_layerTreeContext; // Whether we've sent a UpdateBackingStoreState message and are now waiting for a DidUpdateBackingStoreState message. // Used to throttle UpdateBackingStoreState messages so we don't send them faster than the Web process can handle. bool m_isWaitingForDidUpdateBackingStoreState { false }; // For a new Drawing Area don't draw anything until the WebProcess has sent over the first content. bool m_hasReceivedFirstUpdate { false }; #if USE(TEXTURE_MAPPER_GL) && PLATFORM(GTK) && PLATFORM(X11) && !USE(REDIRECTED_XCOMPOSITE_WINDOW) uint64_t m_pendingNativeSurfaceHandleForCompositing { 0 }; #endif }; } // namespace WebKit