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/*
* 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 blink {
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&);
// For testing.
static bool has(RenderObject*);
// This is public for testing. Do not call this from other classes.
void set(RenderObject*, LayerSizeMap* innerMap, 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 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 blink
#endif
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