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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 PaintInvalidationState_h
#define PaintInvalidationState_h
#include "platform/geometry/LayoutRect.h"
#include "platform/transforms/AffineTransform.h"
#include "wtf/Noncopyable.h"
namespace blink {
class RenderLayerModelObject;
class RenderObject;
class RenderSVGModelObject;
class RenderView;
class PaintInvalidationState {
WTF_MAKE_NONCOPYABLE(PaintInvalidationState);
public:
PaintInvalidationState(const PaintInvalidationState& next, RenderLayerModelObject& renderer, const RenderLayerModelObject& paintInvalidationContainer);
PaintInvalidationState(const PaintInvalidationState& next, const RenderSVGModelObject& renderer);
explicit PaintInvalidationState(const RenderView&);
const LayoutRect& clipRect() const { return m_clipRect; }
const LayoutSize& paintOffset() const { return m_paintOffset; }
const AffineTransform& svgTransform() const { ASSERT(m_svgTransform); return *m_svgTransform; }
bool cachedOffsetsEnabled() const { return m_cachedOffsetsEnabled; }
bool isClipped() const { return m_clipped; }
bool forceCheckForPaintInvalidation() const { return m_forceCheckForPaintInvalidation; }
void setForceCheckForPaintInvalidation() { m_forceCheckForPaintInvalidation = true; }
const RenderLayerModelObject& paintInvalidationContainer() const { return m_paintInvalidationContainer; }
bool canMapToContainer(const RenderLayerModelObject* container) const
{
return m_cachedOffsetsEnabled && container == &m_paintInvalidationContainer;
}
private:
void applyClipIfNeeded(const RenderObject&);
void addClipRectRelativeToPaintOffset(const LayoutSize& clipSize);
friend class ForceHorriblySlowRectMapping;
bool m_clipped;
mutable bool m_cachedOffsetsEnabled;
bool m_forceCheckForPaintInvalidation;
LayoutRect m_clipRect;
// x/y offset from paint invalidation container. Includes relative positioning and scroll offsets.
LayoutSize m_paintOffset;
const RenderLayerModelObject& m_paintInvalidationContainer;
// Transform from the initial viewport coordinate system of an outermost
// SVG root to the userspace _before_ the relevant element. Combining this
// with |m_paintOffset| yields the "final" offset.
OwnPtr<AffineTransform> m_svgTransform;
};
} // namespace blink
#endif // PaintInvalidationState_h
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