2 * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above
9 * copyright notice, this list of conditions and the following
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.
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
30 #ifndef ShapeOutsideInfo_h
31 #define ShapeOutsideInfo_h
33 #include "core/rendering/shapes/Shape.h"
34 #include "core/rendering/style/RenderStyle.h"
35 #include "core/rendering/style/ShapeValue.h"
36 #include "platform/geometry/FloatRect.h"
37 #include "platform/geometry/LayoutSize.h"
38 #include "wtf/OwnPtr.h"
39 #include "wtf/Vector.h"
43 class RenderBlockFlow;
47 class ShapeOutsideInfo FINAL {
48 WTF_MAKE_FAST_ALLOCATED;
50 void setReferenceBoxLogicalSize(LayoutSize);
52 SegmentList computeSegmentsForLine(LayoutUnit lineTop, LayoutUnit lineHeight) const;
54 LayoutUnit shapeLogicalTop() const { return computedShape().shapeMarginLogicalBoundingBox().y() + logicalTopOffset(); }
55 LayoutUnit shapeLogicalBottom() const { return computedShape().shapeMarginLogicalBoundingBox().maxY() + logicalTopOffset(); }
56 LayoutUnit shapeLogicalLeft() const { return computedShape().shapeMarginLogicalBoundingBox().x() + logicalLeftOffset(); }
57 LayoutUnit shapeLogicalRight() const { return computedShape().shapeMarginLogicalBoundingBox().maxX() + logicalLeftOffset(); }
58 LayoutUnit shapeLogicalWidth() const { return computedShape().shapeMarginLogicalBoundingBox().width(); }
59 LayoutUnit shapeLogicalHeight() const { return computedShape().shapeMarginLogicalBoundingBox().height(); }
61 LayoutUnit logicalLineTop() const { return m_referenceBoxLineTop + logicalTopOffset(); }
62 LayoutUnit logicalLineBottom() const { return m_referenceBoxLineTop + m_lineHeight + logicalTopOffset(); }
64 LayoutUnit leftMarginBoxDelta() const { return m_leftMarginBoxDelta; }
65 LayoutUnit rightMarginBoxDelta() const { return m_rightMarginBoxDelta; }
66 bool lineOverlapsShape() const { return m_lineOverlapsShape; }
68 static PassOwnPtr<ShapeOutsideInfo> createInfo(const RenderBox& renderer) { return adoptPtr(new ShapeOutsideInfo(renderer)); }
69 static bool isEnabledFor(const RenderBox&);
70 void updateDeltasForContainingBlockLine(const RenderBlockFlow&, const FloatingObject&, LayoutUnit lineTop, LayoutUnit lineHeight);
72 bool lineOverlapsShapeBounds() const
74 return computedShape().lineOverlapsShapeMarginBounds(m_referenceBoxLineTop, m_lineHeight);
77 static ShapeOutsideInfo& ensureInfo(const RenderBox& key)
79 InfoMap& infoMap = ShapeOutsideInfo::infoMap();
80 if (ShapeOutsideInfo* info = infoMap.get(&key))
82 InfoMap::AddResult result = infoMap.add(&key, ShapeOutsideInfo::createInfo(key));
83 return *result.storedValue->value;
85 static void removeInfo(const RenderBox& key) { infoMap().remove(&key); }
86 static ShapeOutsideInfo* info(const RenderBox& key) { return infoMap().get(&key); }
88 void markShapeAsDirty() { m_shape.clear(); }
89 bool isShapeDirty() { return !m_shape.get(); }
90 LayoutSize shapeSize() const { return m_referenceBoxLogicalSize; }
92 LayoutRect computedShapePhysicalBoundingBox() const;
93 FloatPoint shapeToRendererPoint(FloatPoint) const;
94 FloatSize shapeToRendererSize(FloatSize) const;
95 const Shape& computedShape() const;
98 ShapeOutsideInfo(const RenderBox& renderer)
99 : m_renderer(renderer)
100 , m_lineOverlapsShape(false)
104 PassOwnPtr<Shape> createShapeForImage(StyleImage*, float shapeImageThreshold, WritingMode, float margin) const;
106 LayoutUnit logicalTopOffset() const;
107 LayoutUnit logicalLeftOffset() const;
109 typedef HashMap<const RenderBox*, OwnPtr<ShapeOutsideInfo> > InfoMap;
110 static InfoMap& infoMap()
112 DEFINE_STATIC_LOCAL(InfoMap, staticInfoMap, ());
113 return staticInfoMap;
116 LayoutUnit m_referenceBoxLineTop;
117 LayoutUnit m_lineHeight;
119 const RenderBox& m_renderer;
120 mutable OwnPtr<Shape> m_shape;
121 LayoutSize m_referenceBoxLogicalSize;
122 LayoutUnit m_leftMarginBoxDelta;
123 LayoutUnit m_rightMarginBoxDelta;
124 LayoutUnit m_borderBoxLineTop;
125 bool m_lineOverlapsShape;