/* * Copyright (C) 2013 Google 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: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 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. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT * OWNER OR 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 "core/rendering/RenderObject.h" #include "platform/geometry/IntSize.h" #include "platform/geometry/LayoutSize.h" #include "platform/graphics/Image.h" #include "platform/graphics/ImageOrientation.h" #include "platform/graphics/ImageSource.h" #include "wtf/HashMap.h" namespace WebCore { typedef HashMap<const void*, LayoutSize> LayerSizeMap; typedef HashMap<RenderObject*, LayerSizeMap> ObjectLayerSizeMap; class ImageQualityController FINAL { WTF_MAKE_NONCOPYABLE(ImageQualityController); WTF_MAKE_FAST_ALLOCATED; public: ~ImageQualityController(); static ImageQualityController* imageQualityController(); static void remove(RenderObject*); InterpolationQuality chooseInterpolationQuality(GraphicsContext*, RenderObject*, Image*, const void* layer, const LayoutSize&); private: ImageQualityController(); bool shouldPaintAtLowQuality(GraphicsContext*, RenderObject*, Image*, const void* layer, const LayoutSize&); void removeLayer(RenderObject*, LayerSizeMap* innerMap, const void* layer); void set(RenderObject*, LayerSizeMap* innerMap, const void* layer, const LayoutSize&); void objectDestroyed(RenderObject*); bool isEmpty() { return m_objectLayerSizeMap.isEmpty(); } void highQualityRepaintTimerFired(Timer<ImageQualityController>*); void restartTimer(); ObjectLayerSizeMap m_objectLayerSizeMap; Timer<ImageQualityController> m_timer; bool m_animatedResizeIsActive; bool m_liveResizeOptimizationIsActive; }; } // namespace WebCore #endif