1/* 2 * Copyright (C) 2013 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef ImageQualityController_h 27#define ImageQualityController_h 28 29#include "Timer.h" 30#include <wtf/HashMap.h> 31 32namespace WebCore { 33 34class Frame; 35class GraphicsContext; 36class Image; 37class LayoutSize; 38class RenderBoxModelObject; 39class RenderView; 40 41class ImageQualityController { 42 WTF_MAKE_NONCOPYABLE(ImageQualityController) 43public: 44 explicit ImageQualityController(const RenderView&); 45 46 bool shouldPaintAtLowQuality(GraphicsContext*, RenderBoxModelObject*, Image*, const void* layer, const LayoutSize&); 47 void rendererWillBeDestroyed(RenderBoxModelObject& renderer) { removeObject(&renderer); } 48 49private: 50 typedef HashMap<const void*, LayoutSize> LayerSizeMap; 51 typedef HashMap<RenderBoxModelObject*, LayerSizeMap> ObjectLayerSizeMap; 52 53 void removeLayer(RenderBoxModelObject*, LayerSizeMap* innerMap, const void* layer); 54 void set(RenderBoxModelObject*, LayerSizeMap* innerMap, const void* layer, const LayoutSize&); 55 void highQualityRepaintTimerFired(Timer<ImageQualityController>&); 56 void restartTimer(); 57 void removeObject(RenderBoxModelObject*); 58 59 const RenderView& m_renderView; 60 ObjectLayerSizeMap m_objectLayerSizeMap; 61 Timer<ImageQualityController> m_timer; 62 bool m_animatedResizeIsActive; 63 bool m_liveResizeOptimizationIsActive; 64}; 65 66} // namespace 67 68#endif 69