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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/rendering/shapes/ShapeInfo.h"
     34 #include "platform/geometry/LayoutSize.h"
     35 
     36 namespace WebCore {
     37 
     38 class RenderBlockFlow;
     39 class RenderBox;
     40 class FloatingObject;
     41 
     42 class ShapeOutsideInfo FINAL : public ShapeInfo<RenderBox>, public MappedInfo<RenderBox, ShapeOutsideInfo> {
     43 public:
     44     LayoutUnit leftMarginBoxDelta() const { return m_leftMarginBoxDelta; }
     45     LayoutUnit rightMarginBoxDelta() const { return m_rightMarginBoxDelta; }
     46 
     47     void updateDeltasForContainingBlockLine(const RenderBlockFlow*, const FloatingObject*, LayoutUnit lineTop, LayoutUnit lineHeight);
     48 
     49     static PassOwnPtr<ShapeOutsideInfo> createInfo(const RenderBox* renderer) { return adoptPtr(new ShapeOutsideInfo(renderer)); }
     50     static bool isEnabledFor(const RenderBox*);
     51 
     52     virtual bool lineOverlapsShapeBounds() const OVERRIDE
     53     {
     54         return computedShape()->lineOverlapsShapeMarginBounds(m_shapeLineTop, m_lineHeight);
     55     }
     56 
     57 protected:
     58     virtual LayoutRect computedShapeLogicalBoundingBox() const OVERRIDE { return computedShape()->shapeMarginLogicalBoundingBox(); }
     59     virtual ShapeValue* shapeValue() const OVERRIDE;
     60     virtual void getIntervals(LayoutUnit lineTop, LayoutUnit lineHeight, SegmentList& segments) const OVERRIDE
     61     {
     62         return computedShape()->getExcludedIntervals(lineTop, lineHeight, segments);
     63     }
     64 
     65 private:
     66     ShapeOutsideInfo(const RenderBox* renderer) : ShapeInfo<RenderBox>(renderer) { }
     67 
     68     LayoutUnit m_leftMarginBoxDelta;
     69     LayoutUnit m_rightMarginBoxDelta;
     70     LayoutUnit m_lineTop;
     71 };
     72 
     73 }
     74 #endif
     75