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 36namespace WebCore { 37 38LineSegmentRange::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 44bool ShapeInsideInfo::isEnabledFor(const RenderBlock* renderer) 45{ 46 ShapeValue* shapeValue = renderer->style()->resolvedShapeInside(); 47 if (!shapeValue) 48 return false; 49 50 switch (shapeValue->type()) { 51 case ShapeValue::Shape: 52 return shapeValue->shape() && shapeValue->shape()->type() != BasicShape::BasicShapeInsetRectangleType; 53 case ShapeValue::Image: 54 return shapeValue->isImageValid() && checkShapeImageOrigin(renderer->document(), *(shapeValue->image()->cachedImage())); 55 case ShapeValue::Box: 56 case ShapeValue::Outside: 57 return false; 58 } 59 60 return false; 61} 62 63bool ShapeInsideInfo::updateSegmentsForLine(LayoutSize lineOffset, LayoutUnit lineHeight) 64{ 65 bool result = updateSegmentsForLine(lineOffset.height(), lineHeight); 66 for (size_t i = 0; i < m_segments.size(); i++) { 67 m_segments[i].logicalLeft -= lineOffset.width(); 68 m_segments[i].logicalRight -= lineOffset.width(); 69 } 70 return result; 71} 72 73bool ShapeInsideInfo::updateSegmentsForLine(LayoutUnit lineTop, LayoutUnit lineHeight) 74{ 75 ASSERT(lineHeight >= 0); 76 m_shapeLineTop = lineTop - logicalTopOffset(); 77 m_lineHeight = lineHeight; 78 m_segments.clear(); 79 m_segmentRanges.clear(); 80 81 if (lineOverlapsShapeBounds()) 82 m_segments = computeSegmentsForLine(lineTop, lineHeight); 83 84 return m_segments.size(); 85} 86 87bool ShapeInsideInfo::adjustLogicalLineTop(float minSegmentWidth) 88{ 89 const Shape* shape = computedShape(); 90 if (!shape || m_lineHeight <= 0 || logicalLineTop() > shapeLogicalBottom()) 91 return false; 92 93 LayoutUnit newLineTop; 94 if (shape->firstIncludedIntervalLogicalTop(m_shapeLineTop, LayoutSize(minSegmentWidth, m_lineHeight), newLineTop)) { 95 if (newLineTop > m_shapeLineTop) { 96 m_shapeLineTop = newLineTop; 97 return true; 98 } 99 } 100 101 return false; 102} 103 104ShapeValue* ShapeInsideInfo::shapeValue() const 105{ 106 return m_renderer->style()->resolvedShapeInside(); 107} 108 109LayoutUnit ShapeInsideInfo::computeFirstFitPositionForFloat(const LayoutSize floatSize) const 110{ 111 if (!computedShape() || !floatSize.width() || shapeLogicalBottom() < logicalLineTop()) 112 return 0; 113 114 LayoutUnit firstFitPosition = 0; 115 if (computedShape()->firstIncludedIntervalLogicalTop(m_shapeLineTop, floatSize, firstFitPosition) && (m_shapeLineTop <= firstFitPosition)) 116 return firstFitPosition; 117 118 return 0; 119} 120 121} 122