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Side by Side Diff: third_party/WebKit/Source/core/layout/LayoutGeometryMap.h

Issue 2394263004: Reformat comments in core/layout up until LayoutMultiColumnFlowThread (Closed)
Patch Set: Rebase w/HEAD Created 4 years, 2 months ago
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1 /* 1 /*
2 * Copyright (C) 2012 Apple Inc. All rights reserved. 2 * Copyright (C) 2012 Apple Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 1. Redistributions of source code must retain the above copyright 7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer. 8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright 9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the 10 * notice, this list of conditions and the following disclaimer in the
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35 #include "platform/geometry/LayoutSize.h" 35 #include "platform/geometry/LayoutSize.h"
36 #include "wtf/Allocator.h" 36 #include "wtf/Allocator.h"
37 37
38 namespace blink { 38 namespace blink {
39 39
40 class PaintLayer; 40 class PaintLayer;
41 class LayoutBoxModelObject; 41 class LayoutBoxModelObject;
42 class TransformationMatrix; 42 class TransformationMatrix;
43 class TransformState; 43 class TransformState;
44 44
45 // Can be used while walking the layout tree to cache data about offsets and tra nsforms. 45 // Can be used while walking the layout tree to cache data about offsets and
46 // transforms.
46 class CORE_EXPORT LayoutGeometryMap { 47 class CORE_EXPORT LayoutGeometryMap {
47 DISALLOW_NEW(); 48 DISALLOW_NEW();
48 WTF_MAKE_NONCOPYABLE(LayoutGeometryMap); 49 WTF_MAKE_NONCOPYABLE(LayoutGeometryMap);
49 50
50 public: 51 public:
51 LayoutGeometryMap(MapCoordinatesFlags = UseTransforms); 52 LayoutGeometryMap(MapCoordinatesFlags = UseTransforms);
52 ~LayoutGeometryMap(); 53 ~LayoutGeometryMap();
53 54
54 MapCoordinatesFlags getMapCoordinatesFlags() const { 55 MapCoordinatesFlags getMapCoordinatesFlags() const {
55 return m_mapCoordinatesFlags; 56 return m_mapCoordinatesFlags;
56 } 57 }
57 58
58 FloatRect absoluteRect(const FloatRect& rect) const { 59 FloatRect absoluteRect(const FloatRect& rect) const {
59 return mapToAncestor(rect, 0).boundingBox(); 60 return mapToAncestor(rect, 0).boundingBox();
60 } 61 }
61 62
62 // Map to an ancestor. Will assert that the ancestor has been pushed onto this map. 63 // Map to an ancestor. Will assert that the ancestor has been pushed onto this
63 // A null ancestor maps through the LayoutView (including its scale transform, if any). 64 // map. A null ancestor maps through the LayoutView (including its scale
64 // If the ancestor is the LayoutView, the scroll offset is applied, but not th e scale. 65 // transform, if any). If the ancestor is the LayoutView, the scroll offset is
66 // applied, but not the scale.
65 FloatQuad mapToAncestor(const FloatRect&, const LayoutBoxModelObject*) const; 67 FloatQuad mapToAncestor(const FloatRect&, const LayoutBoxModelObject*) const;
66 68
67 // Called by code walking the layout or layer trees. 69 // Called by code walking the layout or layer trees.
68 void pushMappingsToAncestor(const PaintLayer*, 70 void pushMappingsToAncestor(const PaintLayer*,
69 const PaintLayer* ancestorLayer); 71 const PaintLayer* ancestorLayer);
70 void popMappingsToAncestor(const PaintLayer*); 72 void popMappingsToAncestor(const PaintLayer*);
71 void pushMappingsToAncestor(const LayoutObject*, 73 void pushMappingsToAncestor(const LayoutObject*,
72 const LayoutBoxModelObject* ancestorLayoutObject); 74 const LayoutBoxModelObject* ancestorLayoutObject);
73 75
74 // The following methods should only be called by layoutObjects inside a call to pushMappingsToAncestor(). 76 // The following methods should only be called by layoutObjects inside a call
77 // to pushMappingsToAncestor().
75 78
76 // Push geometry info between this layoutObject and some ancestor. The ancesto r must be its container() or some 79 // Push geometry info between this layoutObject and some ancestor. The
77 // stacking context between the layoutObject and its container. 80 // ancestor must be its container() or some stacking context between the
81 // layoutObject and its container.
78 void push(const LayoutObject*, 82 void push(const LayoutObject*,
79 const LayoutSize&, 83 const LayoutSize&,
80 GeometryInfoFlags = 0, 84 GeometryInfoFlags = 0,
81 LayoutSize offsetForFixedPosition = LayoutSize()); 85 LayoutSize offsetForFixedPosition = LayoutSize());
82 void push(const LayoutObject*, 86 void push(const LayoutObject*,
83 const TransformationMatrix&, 87 const TransformationMatrix&,
84 GeometryInfoFlags = 0, 88 GeometryInfoFlags = 0,
85 LayoutSize offsetForFixedPosition = LayoutSize()); 89 LayoutSize offsetForFixedPosition = LayoutSize());
86 90
87 private: 91 private:
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111 int m_transformedStepsCount; 115 int m_transformedStepsCount;
112 int m_fixedStepsCount; 116 int m_fixedStepsCount;
113 LayoutGeometryMapSteps m_mapping; 117 LayoutGeometryMapSteps m_mapping;
114 LayoutSize m_accumulatedOffset; 118 LayoutSize m_accumulatedOffset;
115 MapCoordinatesFlags m_mapCoordinatesFlags; 119 MapCoordinatesFlags m_mapCoordinatesFlags;
116 }; 120 };
117 121
118 } // namespace blink 122 } // namespace blink
119 123
120 #endif // LayoutGeometryMap_h 124 #endif // LayoutGeometryMap_h
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