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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CompositingReasonFinder_h
#define CompositingReasonFinder_h
#include "core/rendering/RenderLayer.h"
#include "core/rendering/compositing/CompositingTriggers.h"
#include "platform/graphics/CompositingReasons.h"
namespace WebCore {
class RenderObject;
class RenderView;
class CompositingReasonFinder {
WTF_MAKE_NONCOPYABLE(CompositingReasonFinder);
public:
explicit CompositingReasonFinder(RenderView&);
CompositingReasons styleDeterminedReasons(RenderObject*) const;
CompositingReasons directReasons(const RenderLayer*) const;
void updateTriggers();
bool hasOverflowScrollTrigger() const;
bool requiresCompositingForScrollableFrame() const;
bool requiresCompositingForPositionFixed(RenderObject*, const RenderLayer*, RenderLayer::ViewportConstrainedNotCompositedReason*) const;
private:
bool isMainFrame() const;
CompositingReasons nonStyleDeterminedDirectReasons(const RenderLayer*) const;
bool requiresCompositingForTransform(RenderObject*) const;
bool requiresCompositingForFilters(RenderObject*) const;
bool requiresCompositingForAnimation(RenderStyle*) const;
RenderView& m_renderView;
CompositingTriggerFlags m_compositingTriggers;
};
} // namespace WebCore
#endif // CompositingReasonFinder_h
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