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#if ENABLE(CSS_SHAPES) 34 35#include "LayoutSize.h" 36#include "Shape.h" 37#include <wtf/HashMap.h> 38 39namespace WebCore { 40 41class RenderBlockFlow; 42class RenderBox; 43class StyleImage; 44class FloatingObject; 45 46class ShapeOutsideInfo final { 47 WTF_MAKE_FAST_ALLOCATED; 48public: 49 ShapeOutsideInfo(const RenderBox& renderer) 50 : m_renderer(renderer) 51 , m_lineOverlapsShape(false) 52 { 53 } 54 55 static bool isEnabledFor(const RenderBox&); 56 57 LayoutUnit leftMarginBoxDelta() const { return m_leftMarginBoxDelta; } 58 LayoutUnit rightMarginBoxDelta() const { return m_rightMarginBoxDelta; } 59 bool lineOverlapsShape() const { return m_lineOverlapsShape; } 60 61 void updateDeltasForContainingBlockLine(const RenderBlockFlow&, const FloatingObject&, LayoutUnit lineTop, LayoutUnit lineHeight); 62 63 void setReferenceBoxLogicalSize(LayoutSize); 64 65 LayoutUnit shapeLogicalTop() const { return computedShape().shapeMarginLogicalBoundingBox().y() + logicalTopOffset(); } 66 LayoutUnit shapeLogicalBottom() const { return computedShape().shapeMarginLogicalBoundingBox().maxY() + logicalTopOffset(); } 67 LayoutUnit shapeLogicalLeft() const { return computedShape().shapeMarginLogicalBoundingBox().x() + logicalLeftOffset(); } 68 LayoutUnit shapeLogicalRight() const { return computedShape().shapeMarginLogicalBoundingBox().maxX() + logicalLeftOffset(); } 69 LayoutUnit shapeLogicalWidth() const { return computedShape().shapeMarginLogicalBoundingBox().width(); } 70 LayoutUnit shapeLogicalHeight() const { return computedShape().shapeMarginLogicalBoundingBox().height(); } 71 72 LayoutUnit logicalLineTop() const { return m_referenceBoxLineTop + logicalTopOffset(); } 73 LayoutUnit logicalLineBottom() const { return m_referenceBoxLineTop + m_lineHeight + logicalTopOffset(); } 74 LayoutUnit logicalLineBottom(LayoutUnit lineHeight) const { return m_referenceBoxLineTop + lineHeight + logicalTopOffset(); } 75 76 void markShapeAsDirty() { m_shape = nullptr; } 77 bool isShapeDirty() { return !m_shape; } 78 79 LayoutRect computedShapePhysicalBoundingBox() const; 80 FloatPoint shapeToRendererPoint(const FloatPoint&) const; 81 FloatSize shapeToRendererSize(const FloatSize&) const; 82 83 const Shape& computedShape() const; 84 85 static ShapeOutsideInfo& ensureInfo(const RenderBox& key) 86 { 87 InfoMap& infoMap = ShapeOutsideInfo::infoMap(); 88 if (ShapeOutsideInfo* info = infoMap.get(&key)) 89 return *info; 90 auto result = infoMap.add(&key, std::make_unique<ShapeOutsideInfo>(key)); 91 return *result.iterator->value; 92 } 93 static void removeInfo(const RenderBox& key) { infoMap().remove(&key); } 94 static ShapeOutsideInfo* info(const RenderBox& key) { return infoMap().get(&key); } 95 96private: 97 std::unique_ptr<Shape> createShapeForImage(StyleImage*, float shapeImageThreshold, WritingMode, float margin) const; 98 99 SegmentList computeSegmentsForLine(LayoutUnit lineTop, LayoutUnit lineHeight) const; 100 101 LayoutUnit logicalTopOffset() const; 102 LayoutUnit logicalLeftOffset() const; 103 104 typedef HashMap<const RenderBox*, std::unique_ptr<ShapeOutsideInfo>> InfoMap; 105 static InfoMap& infoMap() 106 { 107 DEPRECATED_DEFINE_STATIC_LOCAL(InfoMap, staticInfoMap, ()); 108 return staticInfoMap; 109 } 110 111 const RenderBox& m_renderer; 112 113 mutable std::unique_ptr<Shape> m_shape; 114 LayoutSize m_referenceBoxLogicalSize; 115 LayoutUnit m_referenceBoxLineTop; 116 LayoutUnit m_lineHeight; 117 118 LayoutUnit m_leftMarginBoxDelta; 119 LayoutUnit m_rightMarginBoxDelta; 120 LayoutUnit m_borderBoxLineTop; 121 bool m_lineOverlapsShape; 122}; 123 124} 125#endif 126#endif 127