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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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44 }; | 44 }; |
45 typedef unsigned GeometryInfoFlags; | 45 typedef unsigned GeometryInfoFlags; |
46 | 46 |
47 // Stores data about how to map from one layoutObject to its container. | 47 // Stores data about how to map from one layoutObject to its container. |
48 struct LayoutGeometryMapStep { | 48 struct LayoutGeometryMapStep { |
49 DISALLOW_NEW_EXCEPT_PLACEMENT_NEW(); | 49 DISALLOW_NEW_EXCEPT_PLACEMENT_NEW(); |
50 LayoutGeometryMapStep(const LayoutGeometryMapStep& o) | 50 LayoutGeometryMapStep(const LayoutGeometryMapStep& o) |
51 : m_layoutObject(o.m_layoutObject) | 51 : m_layoutObject(o.m_layoutObject) |
52 , m_offset(o.m_offset) | 52 , m_offset(o.m_offset) |
53 , m_offsetForFixedPosition(o.m_offsetForFixedPosition) | 53 , m_offsetForFixedPosition(o.m_offsetForFixedPosition) |
| 54 , m_offsetForStickyPosition(o.m_offsetForStickyPosition) |
54 , m_flags(o.m_flags) | 55 , m_flags(o.m_flags) |
55 { | 56 { |
56 ASSERT(!o.m_transform); | 57 ASSERT(!o.m_transform); |
57 } | 58 } |
58 LayoutGeometryMapStep(const LayoutObject* layoutObject, GeometryInfoFlags fl
ags) | 59 LayoutGeometryMapStep(const LayoutObject* layoutObject, GeometryInfoFlags fl
ags) |
59 : m_layoutObject(layoutObject) | 60 : m_layoutObject(layoutObject) |
60 , m_flags(flags) | 61 , m_flags(flags) |
61 { | 62 { |
62 } | 63 } |
63 const LayoutObject* m_layoutObject; | 64 const LayoutObject* m_layoutObject; |
64 LayoutSize m_offset; | 65 LayoutSize m_offset; |
65 OwnPtr<TransformationMatrix> m_transform; // Includes offset if non-null. | 66 OwnPtr<TransformationMatrix> m_transform; // Includes offset if non-null. |
| 67 // If m_offsetForFixedPosition could only apply to the fixed position steps,
we may be able to merge |
| 68 // with m_offsetForStickyPosition and simplify mapping. |
66 LayoutSize m_offsetForFixedPosition; | 69 LayoutSize m_offsetForFixedPosition; |
| 70 LayoutSize m_offsetForStickyPosition; |
67 GeometryInfoFlags m_flags; | 71 GeometryInfoFlags m_flags; |
68 }; | 72 }; |
69 | 73 |
70 } // namespace blink | 74 } // namespace blink |
71 | 75 |
72 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::LayoutGeometryMapStep)
; | 76 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::LayoutGeometryMapStep)
; |
73 | 77 |
74 #endif // LayoutGeometryMapStep_h | 78 #endif // LayoutGeometryMapStep_h |
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