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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef NGConstraintSpace_h | 5 #ifndef NGConstraintSpace_h |
6 #define NGConstraintSpace_h | 6 #define NGConstraintSpace_h |
7 | 7 |
8 #include "core/CoreExport.h" | 8 #include "core/CoreExport.h" |
9 #include "core/layout/ng/ng_physical_constraint_space.h" | 9 #include "core/layout/ng/ng_physical_constraint_space.h" |
10 #include "core/layout/ng/ng_writing_mode.h" | 10 #include "core/layout/ng/ng_writing_mode.h" |
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34 // NGPhysicalConstraintSpace. Sets this constraint space's size to the | 34 // NGPhysicalConstraintSpace. Sets this constraint space's size to the |
35 // physical constraint space's container size, converted to logical | 35 // physical constraint space's container size, converted to logical |
36 // coordinates. | 36 // coordinates. |
37 // TODO(layout-ng): Do we need this constructor? | 37 // TODO(layout-ng): Do we need this constructor? |
38 NGConstraintSpace(NGWritingMode, NGDirection, NGPhysicalConstraintSpace*); | 38 NGConstraintSpace(NGWritingMode, NGDirection, NGPhysicalConstraintSpace*); |
39 | 39 |
40 // Constructs a constraint space with a different NGWritingMode and | 40 // Constructs a constraint space with a different NGWritingMode and |
41 // NGDirection that's otherwise identical. | 41 // NGDirection that's otherwise identical. |
42 NGConstraintSpace(NGWritingMode, NGDirection, const NGConstraintSpace*); | 42 NGConstraintSpace(NGWritingMode, NGDirection, const NGConstraintSpace*); |
43 | 43 |
44 // Constructs a derived constraint space sharing the same backing | |
45 // NGPhysicalConstraintSpace, NGWritingMode and NGDirection. Primarily for use | |
46 // by NGLayoutOpportunityIterator. | |
47 NGConstraintSpace(const NGConstraintSpace& other, | |
48 NGLogicalOffset, | |
49 NGLogicalSize); | |
50 | |
51 // Constructs a derived constraint space that shares the exclusions of the | 44 // Constructs a derived constraint space that shares the exclusions of the |
52 // input constraint space, but has a different container size, writing mode | 45 // input constraint space, but has a different container size, writing mode |
53 // and direction. Sets the offset to zero. For use by layout algorithms | 46 // and direction. Sets the offset to zero. For use by layout algorithms |
54 // to use as the basis to find layout opportunities for children. | 47 // to use as the basis to find layout opportunities for children. |
55 NGConstraintSpace(NGWritingMode, | 48 NGConstraintSpace(NGWritingMode, |
56 NGDirection, | 49 NGDirection, |
57 const NGConstraintSpace& other, | 50 const NGConstraintSpace& other, |
58 NGLogicalSize); | 51 NGLogicalSize); |
59 | 52 |
60 // This should live on NGBox or another layout bridge and probably take a root | 53 // This should live on NGBox or another layout bridge and probably take a root |
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136 }; | 129 }; |
137 | 130 |
138 inline std::ostream& operator<<(std::ostream& stream, | 131 inline std::ostream& operator<<(std::ostream& stream, |
139 const NGConstraintSpace& value) { | 132 const NGConstraintSpace& value) { |
140 return stream << value.ToString(); | 133 return stream << value.ToString(); |
141 } | 134 } |
142 | 135 |
143 } // namespace blink | 136 } // namespace blink |
144 | 137 |
145 #endif // NGConstraintSpace_h | 138 #endif // NGConstraintSpace_h |
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