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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 #include "config.h"
     31 #include "core/rendering/shapes/ShapeInsideInfo.h"
     32 
     33 #include "core/rendering/InlineIterator.h"
     34 #include "core/rendering/RenderBlock.h"
     35 
     36 namespace WebCore {
     37 
     38 LineSegmentRange::LineSegmentRange(const InlineIterator& start, const InlineIterator& end)
     39     : start(start.root(), start.object(), start.offset())
     40     , end(end.root(), end.object(), end.offset())
     41     {
     42     }
     43 
     44 bool ShapeInsideInfo::isEnabledFor(const RenderBlock* renderer)
     45 {
     46     ShapeValue* shapeValue = renderer->style()->resolvedShapeInside();
     47     if (!shapeValue || shapeValue->type() != ShapeValue::Shape)
     48         return false;
     49 
     50     BasicShape* shape = shapeValue->shape();
     51     return shape && shape->type() != BasicShape::BasicShapeInsetRectangleType;
     52 }
     53 
     54 bool ShapeInsideInfo::adjustLogicalLineTop(float minSegmentWidth)
     55 {
     56     const Shape* shape = computedShape();
     57     if (!shape || m_lineHeight <= 0 || logicalLineTop() > shapeLogicalBottom())
     58         return false;
     59 
     60     LayoutUnit newLineTop;
     61     if (shape->firstIncludedIntervalLogicalTop(m_shapeLineTop, LayoutSize(minSegmentWidth, m_lineHeight), newLineTop)) {
     62         if (newLineTop > m_shapeLineTop) {
     63             m_shapeLineTop = newLineTop;
     64             return true;
     65         }
     66     }
     67 
     68     return false;
     69 }
     70 
     71 }
     72