/* * Copyright (C) 2011 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 "AcceleratedDrawingArea.h" #include <WebCore/Region.h> namespace WebCore { class GraphicsContext; } namespace WebKit { class ShareableBitmap; class UpdateInfo; class DrawingAreaImpl final : public AcceleratedDrawingArea { public: DrawingAreaImpl(WebPage&, const WebPageCreationParameters&); virtual ~DrawingAreaImpl(); private: // DrawingArea void setNeedsDisplay() override; void setNeedsDisplayInRect(const WebCore::IntRect&) override; void scroll(const WebCore::IntRect& scrollRect, const WebCore::IntSize& scrollDelta) override; void forceRepaint() override; void updatePreferences(const WebPreferencesStore&) override; void setRootCompositingLayer(WebCore::GraphicsLayer*) override; // IPC message handlers. void updateBackingStoreState(uint64_t backingStoreStateID, bool respondImmediately, float deviceScaleFactor, const WebCore::IntSize&, const WebCore::IntSize& scrollOffset) override; void didUpdate() override; // AcceleratedDrawingArea void suspendPainting() override; void sendDidUpdateBackingStoreState() override; void didUpdateBackingStoreState() override; void enterAcceleratedCompositingMode(WebCore::GraphicsLayer*) override; void exitAcceleratedCompositingMode() override; void scheduleDisplay(); void displayTimerFired(); void display(); void display(UpdateInfo&); WebCore::Region m_dirtyRegion; WebCore::IntRect m_scrollRect; WebCore::IntSize m_scrollOffset; // Whether we're waiting for a DidUpdate message. Used for throttling paints so that the // web process won't paint more frequent than the UI process can handle. bool m_isWaitingForDidUpdate { false }; bool m_alwaysUseCompositing {false }; bool m_forceRepaintAfterBackingStoreStateUpdate { false }; RunLoop::Timer<DrawingAreaImpl> m_displayTimer; }; } // namespace WebKit