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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 CompositingInputsUpdater_h
#define CompositingInputsUpdater_h
#include "core/rendering/RenderGeometryMap.h"
namespace blink {
class RenderLayer;
class CompositingInputsUpdater {
public:
explicit CompositingInputsUpdater(RenderLayer* rootRenderLayer);
~CompositingInputsUpdater();
void update();
#if ENABLE(ASSERT)
static void assertNeedsCompositingInputsUpdateBitsCleared(RenderLayer*);
#endif
private:
enum UpdateType {
DoNotForceUpdate,
ForceUpdate,
};
struct AncestorInfo {
AncestorInfo()
: ancestorStackingContext(0)
, enclosingCompositedLayer(0)
, lastScrollingAncestor(0)
, hasAncestorWithClipOrOverflowClip(false)
, hasAncestorWithClipPath(false)
{
}
RenderLayer* ancestorStackingContext;
RenderLayer* enclosingCompositedLayer;
// Notice that lastScrollingAncestor isn't the same thing as
// ancestorScrollingLayer. The former is just the nearest scrolling
// along the RenderLayer::parent() chain. The latter is the layer that
// actually controls the scrolling of this layer, which we find on the
// containing block chain.
RenderLayer* lastScrollingAncestor;
bool hasAncestorWithClipOrOverflowClip;
bool hasAncestorWithClipPath;
};
void updateRecursive(RenderLayer*, UpdateType, AncestorInfo);
RenderGeometryMap m_geometryMap;
RenderLayer* m_rootRenderLayer;
};
} // namespace blink
#endif // CompositingInputsUpdater_h
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