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/*
* Copyright (C) 2012 Adobe Systems Incorporated. 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 THE COPYRIGHT HOLDER "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 HOLDER 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 ShapeInsideInfo_h
#define ShapeInsideInfo_h
#if ENABLE(CSS_SHAPES)
#include "ShapeInfo.h"
#include <wtf/PassOwnPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class InlineIterator;
class RenderBlock;
class RenderElement;
class RenderObject;
struct LineSegmentIterator {
RenderElement* root;
RenderObject* object;
unsigned offset;
LineSegmentIterator(RenderElement* root, RenderObject* object, unsigned offset)
: root(root)
, object(object)
, offset(offset)
{
}
};
struct LineSegmentRange {
LineSegmentIterator start;
LineSegmentIterator end;
LineSegmentRange(const InlineIterator& start, const InlineIterator& end);
};
typedef Vector<LineSegmentRange> SegmentRangeList;
class ShapeInsideInfo final : public ShapeInfo<RenderBlock> {
public:
ShapeInsideInfo(const RenderBlock& renderer)
: ShapeInfo<RenderBlock>(renderer)
, m_needsLayout(false)
{
}
static bool isEnabledFor(const RenderBlock& renderer);
bool updateSegmentsForLine(LayoutSize lineOffset, LayoutUnit lineHeight);
bool updateSegmentsForLine(LayoutUnit lineTop, LayoutUnit lineHeight);
bool hasSegments() const
{
return lineOverlapsShapeBounds() && m_segments.size();
}
const SegmentList& segments() const
{
ASSERT(hasSegments());
return m_segments;
}
SegmentRangeList& segmentRanges() { return m_segmentRanges; }
const SegmentRangeList& segmentRanges() const { return m_segmentRanges; }
const LineSegment* currentSegment() const
{
if (!hasSegments())
return 0;
ASSERT(m_segmentRanges.size() < m_segments.size());
return &m_segments[m_segmentRanges.size()];
}
void clearSegments() { m_segments.clear(); }
bool adjustLogicalLineTop(float minSegmentWidth);
LayoutUnit computeFirstFitPositionForFloat(const FloatSize) const;
void setNeedsLayout(bool value) { m_needsLayout = value; }
bool needsLayout() { return m_needsLayout; }
virtual bool lineOverlapsShapeBounds() const override
{
return computedShape().lineOverlapsShapePaddingBounds(m_shapeLineTop, m_lineHeight);
}
protected:
virtual LayoutBox resolvedLayoutBox() const override
{
if (shapeValue()->layoutBox() == BoxMissing)
return ContentBox;
return shapeValue()->layoutBox();
}
private:
virtual LayoutRect computedShapeLogicalBoundingBox() const override { return computedShape().shapePaddingLogicalBoundingBox(); }
virtual ShapeValue* shapeValue() const override;
virtual void getIntervals(LayoutUnit lineTop, LayoutUnit lineHeight, SegmentList& segments) const override
{
return computedShape().getIncludedIntervals(lineTop, lineHeight, segments);
}
SegmentRangeList m_segmentRanges;
bool m_needsLayout:1;
SegmentList m_segments;
};
}
#endif
#endif
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