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/*
* 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.
*/
#pragma once
#include "GraphicsTypes.h"
#include "Timer.h"
#include <wtf/HashMap.h>
#include <wtf/TZoneMalloc.h>
namespace WebCore {
class GraphicsContext;
class Image;
class LayoutSize;
class RenderBoxModelObject;
class RenderView;
class RenderStyle;
class ImageQualityController {
WTF_MAKE_TZONE_ALLOCATED(ImageQualityController);
WTF_MAKE_NONCOPYABLE(ImageQualityController);
public:
explicit ImageQualityController(const RenderView&);
static std::optional<InterpolationQuality> interpolationQualityFromStyle(const RenderStyle&);
InterpolationQuality chooseInterpolationQuality(GraphicsContext&, RenderBoxModelObject*, Image&, const void* layer, const LayoutSize&);
void rendererWillBeDestroyed(RenderBoxModelObject& renderer) { removeObject(&renderer); }
private:
using LayerSizeMap = UncheckedKeyHashMap<const void*, LayoutSize>;
using ObjectLayerSizeMap = UncheckedKeyHashMap<SingleThreadWeakRef<RenderBoxModelObject>, LayerSizeMap>;
void removeLayer(RenderBoxModelObject*, LayerSizeMap* innerMap, const void* layer);
void set(RenderBoxModelObject*, LayerSizeMap* innerMap, const void* layer, const LayoutSize&);
void highQualityRepaintTimerFired();
void restartTimer();
void removeObject(RenderBoxModelObject*);
const RenderView& m_renderView;
ObjectLayerSizeMap m_objectLayerSizeMap;
DeferrableOneShotTimer m_timer;
bool m_animatedResizeIsActive { false };
bool m_liveResizeOptimizationIsActive { false };
};
} // namespace WebCore
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