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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 NGUnits_h | 5 #ifndef NGUnits_h |
6 #define NGUnits_h | 6 #define NGUnits_h |
7 | 7 |
8 #include "core/CoreExport.h" | 8 #include "core/CoreExport.h" |
9 #include "core/layout/ng/ng_writing_mode.h" | 9 #include "core/layout/ng/ng_writing_mode.h" |
10 #include "platform/LayoutUnit.h" | 10 #include "platform/LayoutUnit.h" |
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50 struct NGLogicalOffset { | 50 struct NGLogicalOffset { |
51 NGLogicalOffset() {} | 51 NGLogicalOffset() {} |
52 NGLogicalOffset(LayoutUnit inline_offset, LayoutUnit block_offset) | 52 NGLogicalOffset(LayoutUnit inline_offset, LayoutUnit block_offset) |
53 : inline_offset(inline_offset), block_offset(block_offset) {} | 53 : inline_offset(inline_offset), block_offset(block_offset) {} |
54 | 54 |
55 LayoutUnit inline_offset; | 55 LayoutUnit inline_offset; |
56 LayoutUnit block_offset; | 56 LayoutUnit block_offset; |
57 | 57 |
58 // Converts a logical offset to a physical offset. See: | 58 // Converts a logical offset to a physical offset. See: |
59 // https://drafts.csswg.org/css-writing-modes-3/#logical-to-physical | 59 // https://drafts.csswg.org/css-writing-modes-3/#logical-to-physical |
60 // PhysicalOffset will be the physical top left point of the rectangle | |
61 // described by offset + inner_size. Setting inner_size to 0,0 will return | |
62 // the same point. | |
60 // @param outer_size the size of the rect (typically a fragment). | 63 // @param outer_size the size of the rect (typically a fragment). |
61 // @param inner_size the size of the inner rect (typically a child fragment). | 64 // @param inner_size the size of the inner rect (typically a child fragment). |
62 CORE_EXPORT NGPhysicalOffset | 65 CORE_EXPORT NGPhysicalOffset |
63 ConvertToPhysical(NGWritingMode, | 66 ConvertToPhysical(NGWritingMode, |
64 TextDirection, | 67 TextDirection, |
65 NGPhysicalSize outer_size, | 68 NGPhysicalSize outer_size, |
66 NGPhysicalSize inner_size) const; | 69 NGPhysicalSize inner_size) const; |
70 | |
67 bool operator==(const NGLogicalOffset& other) const; | 71 bool operator==(const NGLogicalOffset& other) const; |
68 | 72 |
69 NGLogicalOffset operator+(const NGLogicalOffset& other) const; | 73 NGLogicalOffset operator+(const NGLogicalOffset& other) const; |
70 | 74 |
71 NGLogicalOffset& operator+=(const NGLogicalOffset& other); | 75 NGLogicalOffset& operator+=(const NGLogicalOffset& other); |
72 | 76 |
73 bool operator>(const NGLogicalOffset& other) const; | 77 bool operator>(const NGLogicalOffset& other) const; |
74 bool operator>=(const NGLogicalOffset& other) const; | 78 bool operator>=(const NGLogicalOffset& other) const; |
75 | 79 |
76 bool operator<(const NGLogicalOffset& other) const; | 80 bool operator<(const NGLogicalOffset& other) const; |
77 bool operator<=(const NGLogicalOffset& other) const; | 81 bool operator<=(const NGLogicalOffset& other) const; |
78 | 82 |
79 String ToString() const; | 83 String ToString() const; |
80 }; | 84 }; |
81 | 85 |
82 CORE_EXPORT inline std::ostream& operator<<(std::ostream& os, | 86 CORE_EXPORT inline std::ostream& operator<<(std::ostream& os, |
83 const NGLogicalOffset& value) { | 87 const NGLogicalOffset& value) { |
84 return os << value.ToString(); | 88 return os << value.ToString(); |
85 } | 89 } |
86 | 90 |
87 // NGPhysicalOffset is the position of a rect (typically a fragment) relative to | 91 // NGPhysicalOffset is the position of a rect (typically a fragment) relative to |
88 // its parent rect in the physical coordinate system. | 92 // its parent rect in the physical coordinate system. |
89 struct NGPhysicalOffset { | 93 struct NGPhysicalOffset { |
90 NGPhysicalOffset() {} | 94 NGPhysicalOffset() {} |
91 NGPhysicalOffset(LayoutUnit left, LayoutUnit top) : left(left), top(top) {} | 95 NGPhysicalOffset(LayoutUnit left, LayoutUnit top) : left(left), top(top) {} |
92 | 96 |
93 LayoutUnit left; | 97 LayoutUnit left; |
94 LayoutUnit top; | 98 LayoutUnit top; |
99 | |
100 NGPhysicalOffset operator+(const NGPhysicalOffset& other) const { | |
ikilpatrick
2016/12/02 17:47:06
also define:
NGPhysicalOffset& operator+=(const NG
atotic
2016/12/02 19:55:16
done.
+= is not used yet, our current policy see
ikilpatrick
2016/12/02 21:06:13
Thanks - this comes from:
https://google.github.io
| |
101 return NGPhysicalOffset{this->left + other.left, this->top + other.top}; | |
102 } | |
95 }; | 103 }; |
96 | 104 |
97 struct NGPhysicalSize { | 105 struct NGPhysicalSize { |
98 NGPhysicalSize() {} | 106 NGPhysicalSize() {} |
99 NGPhysicalSize(LayoutUnit width, LayoutUnit height) | 107 NGPhysicalSize(LayoutUnit width, LayoutUnit height) |
100 : width(width), height(height) {} | 108 : width(width), height(height) {} |
101 | 109 |
102 LayoutUnit width; | 110 LayoutUnit width; |
103 LayoutUnit height; | 111 LayoutUnit height; |
104 | 112 |
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260 const NGMarginStrut& value) { | 268 const NGMarginStrut& value) { |
261 return stream << value.ToString(); | 269 return stream << value.ToString(); |
262 } | 270 } |
263 | 271 |
264 // Struct to represent a simple edge that has start and end. | 272 // Struct to represent a simple edge that has start and end. |
265 struct NGEdge { | 273 struct NGEdge { |
266 LayoutUnit start; | 274 LayoutUnit start; |
267 LayoutUnit end; | 275 LayoutUnit end; |
268 }; | 276 }; |
269 | 277 |
278 // Represents rectangle's physical corner. | |
ikilpatrick
2016/12/02 17:47:06
Maybe:
This struct is used to represent the stati
atotic
2016/12/02 19:55:16
done
| |
279 struct CORE_EXPORT NGCorner { | |
280 enum Type { kTopLeft, kTopRight, kBottomLeft, kBottomRight }; | |
281 | |
282 Type type; // Logical corner that corresponds to physical top left. | |
ikilpatrick
2016/12/02 17:47:06
remove this comment?
atotic
2016/12/02 19:55:16
Not done. I will not know what type is a year from
| |
283 NGPhysicalOffset offset; | |
284 | |
285 // Creates a corner with proper type wrt writing mode and direction. | |
286 static NGCorner Create(NGWritingMode, TextDirection, NGPhysicalOffset); | |
287 }; | |
288 | |
270 } // namespace blink | 289 } // namespace blink |
271 | 290 |
272 #endif // NGUnits_h | 291 #endif // NGUnits_h |
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