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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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44 class TransformState; | 44 class TransformState; |
45 | 45 |
46 // Can be used while walking the layout tree to cache data about offsets and tra
nsforms. | 46 // Can be used while walking the layout tree to cache data about offsets and tra
nsforms. |
47 class CORE_EXPORT LayoutGeometryMap { | 47 class CORE_EXPORT LayoutGeometryMap { |
48 DISALLOW_NEW(); | 48 DISALLOW_NEW(); |
49 WTF_MAKE_NONCOPYABLE(LayoutGeometryMap); | 49 WTF_MAKE_NONCOPYABLE(LayoutGeometryMap); |
50 public: | 50 public: |
51 LayoutGeometryMap(MapCoordinatesFlags = UseTransforms); | 51 LayoutGeometryMap(MapCoordinatesFlags = UseTransforms); |
52 ~LayoutGeometryMap(); | 52 ~LayoutGeometryMap(); |
53 | 53 |
54 MapCoordinatesFlags mapCoordinatesFlags() const { return m_mapCoordinatesFla
gs; } | 54 MapCoordinatesFlags getMapCoordinatesFlags() const { return m_mapCoordinates
Flags; } |
55 | 55 |
56 FloatRect absoluteRect(const FloatRect& rect) const | 56 FloatRect absoluteRect(const FloatRect& rect) const |
57 { | 57 { |
58 return mapToAncestor(rect, 0).boundingBox(); | 58 return mapToAncestor(rect, 0).boundingBox(); |
59 } | 59 } |
60 | 60 |
61 // Map to an ancestor. Will assert that the ancestor has been pushed onto th
is map. | 61 // Map to an ancestor. Will assert that the ancestor has been pushed onto th
is map. |
62 // A null ancestor maps through the LayoutView (including its scale transfor
m, if any). | 62 // A null ancestor maps through the LayoutView (including its scale transfor
m, if any). |
63 // If the ancestor is the LayoutView, the scroll offset is applied, but not
the scale. | 63 // If the ancestor is the LayoutView, the scroll offset is applied, but not
the scale. |
64 FloatQuad mapToAncestor(const FloatRect&, const LayoutBoxModelObject*) const
; | 64 FloatQuad mapToAncestor(const FloatRect&, const LayoutBoxModelObject*) const
; |
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101 int m_transformedStepsCount; | 101 int m_transformedStepsCount; |
102 int m_fixedStepsCount; | 102 int m_fixedStepsCount; |
103 LayoutGeometryMapSteps m_mapping; | 103 LayoutGeometryMapSteps m_mapping; |
104 LayoutSize m_accumulatedOffset; | 104 LayoutSize m_accumulatedOffset; |
105 MapCoordinatesFlags m_mapCoordinatesFlags; | 105 MapCoordinatesFlags m_mapCoordinatesFlags; |
106 }; | 106 }; |
107 | 107 |
108 } // namespace blink | 108 } // namespace blink |
109 | 109 |
110 #endif // LayoutGeometryMap_h | 110 #endif // LayoutGeometryMap_h |
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