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83 lines
3.2 KiB
C++
83 lines
3.2 KiB
C++
/*
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* Copyright (C) 2013 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef ImageQualityController_h
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#define ImageQualityController_h
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#include "core/rendering/RenderObject.h"
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#include "platform/geometry/IntSize.h"
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#include "platform/geometry/LayoutSize.h"
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#include "platform/graphics/Image.h"
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#include "platform/graphics/ImageOrientation.h"
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#include "platform/graphics/ImageSource.h"
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#include "wtf/HashMap.h"
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namespace blink {
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typedef HashMap<const void*, LayoutSize> LayerSizeMap;
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typedef HashMap<RenderObject*, LayerSizeMap> ObjectLayerSizeMap;
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class ImageQualityController FINAL {
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WTF_MAKE_NONCOPYABLE(ImageQualityController); WTF_MAKE_FAST_ALLOCATED;
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public:
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~ImageQualityController();
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static ImageQualityController* imageQualityController();
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static void remove(RenderObject*);
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InterpolationQuality chooseInterpolationQuality(GraphicsContext*, RenderObject*, Image*, const void* layer, const LayoutSize&);
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// For testing.
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static bool has(RenderObject*);
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// This is public for testing. Do not call this from other classes.
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void set(RenderObject*, LayerSizeMap* innerMap, const void* layer, const LayoutSize&);
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private:
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ImageQualityController();
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bool shouldPaintAtLowQuality(GraphicsContext*, RenderObject*, Image*, const void* layer, const LayoutSize&);
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void removeLayer(RenderObject*, LayerSizeMap* innerMap, const void* layer);
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void objectDestroyed(RenderObject*);
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bool isEmpty() { return m_objectLayerSizeMap.isEmpty(); }
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void highQualityRepaintTimerFired(Timer<ImageQualityController>*);
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void restartTimer();
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ObjectLayerSizeMap m_objectLayerSizeMap;
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Timer<ImageQualityController> m_timer;
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bool m_animatedResizeIsActive;
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bool m_liveResizeOptimizationIsActive;
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};
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} // namespace blink
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#endif
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