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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 * Copyright (C) 2014 Google Inc. All rights reserved. | 3 * Copyright (C) 2014 Google Inc. All rights reserved. |
4 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted provided that the following conditions | 6 * modification, are permitted provided that the following conditions |
7 * are met: | 7 * are met: |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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36 | 36 |
37 class LayoutObject; | 37 class LayoutObject; |
38 | 38 |
39 // Stores data about how to map from one layoutObject to its container. | 39 // Stores data about how to map from one layoutObject to its container. |
40 struct LayoutGeometryMapStep { | 40 struct LayoutGeometryMapStep { |
41 DISALLOW_NEW_EXCEPT_PLACEMENT_NEW(); | 41 DISALLOW_NEW_EXCEPT_PLACEMENT_NEW(); |
42 LayoutGeometryMapStep(const LayoutGeometryMapStep& o) | 42 LayoutGeometryMapStep(const LayoutGeometryMapStep& o) |
43 : m_layoutObject(o.m_layoutObject) | 43 : m_layoutObject(o.m_layoutObject) |
44 , m_offset(o.m_offset) | 44 , m_offset(o.m_offset) |
45 , m_offsetForFixedPosition(o.m_offsetForFixedPosition) | 45 , m_offsetForFixedPosition(o.m_offsetForFixedPosition) |
| 46 , m_offsetForStickyPosition(o.m_offsetForStickyPosition) |
46 , m_accumulatingTransform(o.m_accumulatingTransform) | 47 , m_accumulatingTransform(o.m_accumulatingTransform) |
47 , m_isNonUniform(o.m_isNonUniform) | 48 , m_isNonUniform(o.m_isNonUniform) |
48 , m_isFixedPosition(o.m_isFixedPosition) | 49 , m_isFixedPosition(o.m_isFixedPosition) |
49 , m_hasTransform(o.m_hasTransform) | 50 , m_hasTransform(o.m_hasTransform) |
50 { | 51 { |
51 ASSERT(!o.m_transform); | 52 ASSERT(!o.m_transform); |
52 } | 53 } |
53 LayoutGeometryMapStep(const LayoutObject* layoutObject, bool accumulatingTra
nsform, bool isNonUniform, bool isFixedPosition, bool hasTransform) | 54 LayoutGeometryMapStep(const LayoutObject* layoutObject, bool accumulatingTra
nsform, bool isNonUniform, bool isFixedPosition, bool hasTransform) |
54 : m_layoutObject(layoutObject) | 55 : m_layoutObject(layoutObject) |
55 , m_accumulatingTransform(accumulatingTransform) | 56 , m_accumulatingTransform(accumulatingTransform) |
56 , m_isNonUniform(isNonUniform) | 57 , m_isNonUniform(isNonUniform) |
57 , m_isFixedPosition(isFixedPosition) | 58 , m_isFixedPosition(isFixedPosition) |
58 , m_hasTransform(hasTransform) | 59 , m_hasTransform(hasTransform) |
59 { | 60 { |
60 } | 61 } |
61 const LayoutObject* m_layoutObject; | 62 const LayoutObject* m_layoutObject; |
62 LayoutSize m_offset; | 63 LayoutSize m_offset; |
63 OwnPtr<TransformationMatrix> m_transform; // Includes offset if non-null. | 64 OwnPtr<TransformationMatrix> m_transform; // Includes offset if non-null. |
| 65 // If m_offsetForFixedPosition could only apply to the fixed position steps,
we may be able to merge |
| 66 // with m_offsetForStickyPosition and simplify mapping. |
64 LayoutSize m_offsetForFixedPosition; | 67 LayoutSize m_offsetForFixedPosition; |
| 68 LayoutSize m_offsetForStickyPosition; |
65 bool m_accumulatingTransform; | 69 bool m_accumulatingTransform; |
66 bool m_isNonUniform; // Mapping depends on the input point, e.g. because of
CSS columns. | 70 bool m_isNonUniform; // Mapping depends on the input point, e.g. because of
CSS columns. |
67 bool m_isFixedPosition; | 71 bool m_isFixedPosition; |
68 bool m_hasTransform; | 72 bool m_hasTransform; |
69 }; | 73 }; |
70 | 74 |
71 } // namespace blink | 75 } // namespace blink |
72 | 76 |
73 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::LayoutGeometryMapStep)
; | 77 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::LayoutGeometryMapStep)
; |
74 | 78 |
75 #endif // LayoutGeometryMapStep_h | 79 #endif // LayoutGeometryMapStep_h |
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