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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 #include "core/layout/ng/ng_length_utils.h" | 5 #include "core/layout/ng/ng_length_utils.h" |
6 | 6 |
7 #include "core/layout/ng/ng_constraint_space.h" | 7 #include "core/layout/ng/ng_constraint_space.h" |
8 #include "core/style/ComputedStyle.h" | 8 #include "core/style/ComputedStyle.h" |
9 #include "platform/LayoutUnit.h" | 9 #include "platform/LayoutUnit.h" |
10 #include "platform/Length.h" | 10 #include "platform/Length.h" |
11 | 11 |
12 namespace blink { | 12 namespace blink { |
13 // TODO(layout-ng): | 13 // TODO(layout-ng): |
14 // - Handle border-box correctly | 14 // - Handle border-box correctly |
15 // - positioned and/or replaced calculations | 15 // - positioned and/or replaced calculations |
16 // - Handle margins for fill-available and width: auto | 16 // - Handle margins for fill-available and width: auto |
| 17 // - Take scrollbars into account |
17 | 18 |
18 LayoutUnit resolveInlineLength(const NGConstraintSpace& constraintSpace, | 19 LayoutUnit resolveInlineLength(const NGConstraintSpace& constraintSpace, |
19 const Length& length, | 20 const Length& length, |
20 LengthResolveType type) { | 21 LengthResolveType type) { |
21 // TODO(layout-ng): Handle min/max/fit-content | 22 // TODO(layout-ng): Handle min/max/fit-content |
22 DCHECK(!length.isMaxSizeNone()); | 23 DCHECK(!length.isMaxSizeNone()); |
23 DCHECK_GE(constraintSpace.ContainerSize().inline_size, LayoutUnit()); | 24 DCHECK_GE(constraintSpace.ContainerSize().inline_size, LayoutUnit()); |
24 | 25 |
25 if (type == LengthResolveType::MinSize && length.isAuto()) | 26 if (type == LengthResolveType::MinSize && length.isAuto()) |
26 return LayoutUnit(); | 27 return LayoutUnit(); |
27 | 28 |
28 if (type == LengthResolveType::MarginSize && length.isAuto()) | 29 if (type == LengthResolveType::MarginBorderPaddingSize && length.isAuto()) |
29 return LayoutUnit(); | 30 return LayoutUnit(); |
30 | 31 |
31 return valueForLength(length, constraintSpace.ContainerSize().inline_size); | 32 return valueForLength(length, constraintSpace.ContainerSize().inline_size); |
32 } | 33 } |
33 | 34 |
34 LayoutUnit resolveBlockLength(const NGConstraintSpace& constraintSpace, | 35 LayoutUnit resolveBlockLength(const NGConstraintSpace& constraintSpace, |
35 const Length& length, | 36 const Length& length, |
36 LayoutUnit contentSize, | 37 LayoutUnit contentSize, |
37 LengthResolveType type) { | 38 LengthResolveType type) { |
38 DCHECK(!length.isMaxSizeNone()); | 39 DCHECK(!length.isMaxSizeNone()); |
39 DCHECK(type != LengthResolveType::MarginSize); | 40 DCHECK(type != LengthResolveType::MarginBorderPaddingSize); |
40 | 41 |
41 if (type == LengthResolveType::MinSize && length.isAuto()) | 42 if (type == LengthResolveType::MinSize && length.isAuto()) |
42 return LayoutUnit(); | 43 return LayoutUnit(); |
43 | 44 |
44 if (length.isAuto()) | 45 if (length.isAuto()) |
45 return contentSize; | 46 return contentSize; |
46 | 47 |
47 if (length.isMinContent() || length.isMaxContent() || length.isFitContent()) | 48 if (length.isMinContent() || length.isMaxContent() || length.isFitContent()) |
48 return contentSize; | 49 return contentSize; |
49 | 50 |
(...skipping 63 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
113 } | 114 } |
114 | 115 |
115 return extent; | 116 return extent; |
116 } | 117 } |
117 | 118 |
118 NGBoxStrut computeMargins(const NGConstraintSpace& constraintSpace, | 119 NGBoxStrut computeMargins(const NGConstraintSpace& constraintSpace, |
119 const ComputedStyle& style) { | 120 const ComputedStyle& style) { |
120 // Margins always get computed relative to the inline size: | 121 // Margins always get computed relative to the inline size: |
121 // https://www.w3.org/TR/CSS2/box.html#value-def-margin-width | 122 // https://www.w3.org/TR/CSS2/box.html#value-def-margin-width |
122 NGBoxStrut margins; | 123 NGBoxStrut margins; |
123 margins.inline_start = resolveInlineLength( | 124 margins.inline_start = |
124 constraintSpace, style.marginStart(), LengthResolveType::MarginSize); | 125 resolveInlineLength(constraintSpace, style.marginStart(), |
125 margins.inline_end = resolveInlineLength(constraintSpace, style.marginEnd(), | 126 LengthResolveType::MarginBorderPaddingSize); |
126 LengthResolveType::MarginSize); | 127 margins.inline_end = |
127 margins.block_start = resolveInlineLength( | 128 resolveInlineLength(constraintSpace, style.marginEnd(), |
128 constraintSpace, style.marginBefore(), LengthResolveType::MarginSize); | 129 LengthResolveType::MarginBorderPaddingSize); |
129 margins.block_end = resolveInlineLength(constraintSpace, style.marginAfter(), | 130 margins.block_start = |
130 LengthResolveType::MarginSize); | 131 resolveInlineLength(constraintSpace, style.marginBefore(), |
| 132 LengthResolveType::MarginBorderPaddingSize); |
| 133 margins.block_end = |
| 134 resolveInlineLength(constraintSpace, style.marginAfter(), |
| 135 LengthResolveType::MarginBorderPaddingSize); |
131 return margins; | 136 return margins; |
132 } | 137 } |
133 | 138 |
| 139 NGBoxStrut computeBorders(const ComputedStyle& style) { |
| 140 NGBoxStrut borders; |
| 141 borders.inline_start = LayoutUnit(style.borderStartWidth()); |
| 142 borders.inline_end = LayoutUnit(style.borderEndWidth()); |
| 143 borders.block_start = LayoutUnit(style.borderBeforeWidth()); |
| 144 borders.block_end = LayoutUnit(style.borderAfterWidth()); |
| 145 return borders; |
| 146 } |
| 147 |
| 148 NGBoxStrut computePadding(const NGConstraintSpace& constraintSpace, |
| 149 const ComputedStyle& style) { |
| 150 // Padding always gets computed relative to the inline size: |
| 151 // https://www.w3.org/TR/CSS2/box.html#value-def-padding-width |
| 152 NGBoxStrut padding; |
| 153 padding.inline_start = |
| 154 resolveInlineLength(constraintSpace, style.paddingStart(), |
| 155 LengthResolveType::MarginBorderPaddingSize); |
| 156 padding.inline_end = |
| 157 resolveInlineLength(constraintSpace, style.paddingEnd(), |
| 158 LengthResolveType::MarginBorderPaddingSize); |
| 159 padding.block_start = |
| 160 resolveInlineLength(constraintSpace, style.paddingBefore(), |
| 161 LengthResolveType::MarginBorderPaddingSize); |
| 162 padding.block_end = |
| 163 resolveInlineLength(constraintSpace, style.paddingAfter(), |
| 164 LengthResolveType::MarginBorderPaddingSize); |
| 165 return padding; |
| 166 } |
| 167 |
134 } // namespace blink | 168 } // namespace blink |
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