/* * Copyright (C) 2013 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. */ #ifndef ImageQualityController_h #define ImageQualityController_h #include "Timer.h" #include <wtf/HashMap.h> namespace WebCore { class Frame; class GraphicsContext; class Image; class LayoutSize; class RenderBoxModelObject; class RenderView; class ImageQualityController { WTF_MAKE_NONCOPYABLE(ImageQualityController) public: explicit ImageQualityController(const RenderView&); bool shouldPaintAtLowQuality(GraphicsContext*, RenderBoxModelObject*, Image*, const void* layer, const LayoutSize&); void rendererWillBeDestroyed(RenderBoxModelObject& renderer) { removeObject(&renderer); } private: typedef HashMap<const void*, LayoutSize> LayerSizeMap; typedef HashMap<RenderBoxModelObject*, LayerSizeMap> ObjectLayerSizeMap; void removeLayer(RenderBoxModelObject*, LayerSizeMap* innerMap, const void* layer); void set(RenderBoxModelObject*, LayerSizeMap* innerMap, const void* layer, const LayoutSize&); void highQualityRepaintTimerFired(Timer<ImageQualityController>&); void restartTimer(); void removeObject(RenderBoxModelObject*); const RenderView& m_renderView; ObjectLayerSizeMap m_objectLayerSizeMap; Timer<ImageQualityController> m_timer; bool m_animatedResizeIsActive; bool m_liveResizeOptimizationIsActive; }; } // namespace #endif