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      1 /*
      2  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1. Redistributions of source code must retain the above
      9  *    copyright notice, this list of conditions and the following
     10  *    disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above
     12  *    copyright notice, this list of conditions and the following
     13  *    disclaimer in the documentation and/or other materials
     14  *    provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AS IS AND ANY
     17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
     20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
     21  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     23  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
     25  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
     26  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #ifndef ShapeOutsideInfo_h
     31 #define ShapeOutsideInfo_h
     32 
     33 #include "core/platform/graphics/LayoutSize.h"
     34 #include "core/rendering/shapes/ShapeInfo.h"
     35 
     36 namespace WebCore {
     37 
     38 class RenderBox;
     39 
     40 class ShapeOutsideInfo : public ShapeInfo<RenderBox, &RenderStyle::shapeOutside, &Shape::getExcludedIntervals>, public MappedInfo<RenderBox, ShapeOutsideInfo> {
     41 public:
     42     LayoutUnit leftSegmentMarginBoxDelta() const { return m_leftSegmentMarginBoxDelta; }
     43     LayoutUnit rightSegmentMarginBoxDelta() const { return m_rightSegmentMarginBoxDelta; }
     44 
     45     bool computeSegmentsForContainingBlockLine(LayoutUnit lineTop, LayoutUnit floatTop, LayoutUnit lineHeight);
     46     virtual bool computeSegmentsForLine(LayoutUnit lineTop, LayoutUnit lineHeight) OVERRIDE;
     47 
     48     static PassOwnPtr<ShapeOutsideInfo> createInfo(const RenderBox* renderer) { return adoptPtr(new ShapeOutsideInfo(renderer)); }
     49     static bool isEnabledFor(const RenderBox*);
     50 
     51 protected:
     52     virtual LayoutRect computedShapeLogicalBoundingBox() const OVERRIDE { return computedShape()->shapeMarginLogicalBoundingBox(); }
     53 
     54 private:
     55     ShapeOutsideInfo(const RenderBox* renderer) : ShapeInfo<RenderBox, &RenderStyle::shapeOutside, &Shape::getExcludedIntervals>(renderer) { }
     56 
     57     LayoutUnit m_leftSegmentMarginBoxDelta;
     58     LayoutUnit m_rightSegmentMarginBoxDelta;
     59     LayoutUnit m_lineTop;
     60 };
     61 
     62 }
     63 #endif
     64