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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_fragment_builder.h" | 5 #include "core/layout/ng/ng_fragment_builder.h" |
6 #include "core/layout/ng/ng_block_node.h" | 6 #include "core/layout/ng/ng_block_node.h" |
7 #include "core/style/ComputedStyle.h" | 7 #include "core/style/ComputedStyle.h" |
8 | 8 |
9 namespace blink { | 9 namespace blink { |
10 | 10 |
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37 overflow_.inline_size = size; | 37 overflow_.inline_size = size; |
38 return *this; | 38 return *this; |
39 } | 39 } |
40 | 40 |
41 NGFragmentBuilder& NGFragmentBuilder::SetBlockOverflow(LayoutUnit size) { | 41 NGFragmentBuilder& NGFragmentBuilder::SetBlockOverflow(LayoutUnit size) { |
42 overflow_.block_size = size; | 42 overflow_.block_size = size; |
43 return *this; | 43 return *this; |
44 } | 44 } |
45 | 45 |
46 NGFragmentBuilder& NGFragmentBuilder::AddChild(NGFragmentBase* child, | 46 NGFragmentBuilder& NGFragmentBuilder::AddChild(NGFragmentBase* child, |
47 NGLogicalOffset offset) { | 47 NGLogicalOffset child_offset) { |
48 DCHECK_EQ(type_, NGPhysicalFragmentBase::kFragmentBox) | 48 DCHECK_EQ(type_, NGPhysicalFragmentBase::kFragmentBox) |
49 << "Only box fragments can have children"; | 49 << "Only box fragments can have children"; |
50 children_.append(child->PhysicalFragment()); | 50 children_.append(child->PhysicalFragment()); |
51 offsets_.append(offset); | 51 offsets_.append(child_offset); |
| 52 // Collect child's out of flow descendants. |
| 53 // TODO(atotic) All fragments can carry oof descendants. |
| 54 // Therefore, oof descendants should move from NGPhysicalFragment to |
| 55 // NGPhysicalFragmentBase |
| 56 if (child->PhysicalFragment()->Type() == |
| 57 NGPhysicalFragmentBase::kFragmentBox) { |
| 58 const NGPhysicalFragment* physical_child = |
| 59 static_cast<const NGPhysicalFragment*>(&*child->PhysicalFragment()); |
| 60 const Vector<NGStaticPosition>& oof_positions = |
| 61 physical_child->OutOfFlowPositions(); |
| 62 size_t oof_index = 0; |
| 63 for (auto& oof_node : physical_child->OutOfFlowDescendants()) { |
| 64 NGStaticPosition oof_position = oof_positions[oof_index++]; |
| 65 out_of_flow_descendant_candidates_.add(oof_node); |
| 66 out_of_flow_candidate_placements_.append( |
| 67 OutOfFlowPlacement{child_offset, oof_position}); |
| 68 } |
| 69 } |
52 return *this; | 70 return *this; |
53 } | 71 } |
54 | 72 |
| 73 NGFragmentBuilder& NGFragmentBuilder::AddOutOfFlowChildCandidate( |
| 74 NGBlockNode* child, |
| 75 NGLogicalOffset child_offset) { |
| 76 out_of_flow_descendant_candidates_.add(child); |
| 77 NGStaticPosition child_position = |
| 78 NGStaticPosition::Create(writing_mode_, direction_, NGPhysicalOffset()); |
| 79 out_of_flow_candidate_placements_.append( |
| 80 OutOfFlowPlacement{child_offset, child_position}); |
| 81 return *this; |
| 82 } |
| 83 |
| 84 void NGFragmentBuilder::GetAndClearOutOfFlowDescendantCandidates( |
| 85 WeakBoxList* descendants, |
| 86 Vector<NGStaticPosition>* descendant_positions) { |
| 87 DCHECK(descendants->isEmpty()); |
| 88 DCHECK(descendant_positions->isEmpty()); |
| 89 |
| 90 DCHECK_GE(size_.inline_size, LayoutUnit()); |
| 91 DCHECK_GE(size_.block_size, LayoutUnit()); |
| 92 NGPhysicalSize builder_physical_size{size_.ConvertToPhysical(writing_mode_)}; |
| 93 |
| 94 size_t placement_index = 0; |
| 95 for (auto& oof_node : out_of_flow_descendant_candidates_) { |
| 96 OutOfFlowPlacement oof_placement = |
| 97 out_of_flow_candidate_placements_[placement_index++]; |
| 98 |
| 99 NGPhysicalOffset child_offset = |
| 100 oof_placement.child_offset.ConvertToPhysical( |
| 101 writing_mode_, direction_, builder_physical_size, NGPhysicalSize()); |
| 102 |
| 103 NGStaticPosition builder_relative_position; |
| 104 builder_relative_position.type = oof_placement.descendant_position.type; |
| 105 builder_relative_position.offset = |
| 106 child_offset + oof_placement.descendant_position.offset; |
| 107 descendants->add(oof_node); |
| 108 descendant_positions->append(builder_relative_position); |
| 109 } |
| 110 out_of_flow_descendant_candidates_.clear(); |
| 111 out_of_flow_candidate_placements_.clear(); |
| 112 } |
| 113 |
| 114 NGFragmentBuilder& NGFragmentBuilder::AddOutOfFlowDescendant( |
| 115 NGBlockNode* descendant, |
| 116 const NGStaticPosition& position) { |
| 117 out_of_flow_descendants_.add(descendant); |
| 118 out_of_flow_positions_.append(position); |
| 119 return *this; |
| 120 } |
| 121 |
55 NGFragmentBuilder& NGFragmentBuilder::SetMarginStrutBlockStart( | 122 NGFragmentBuilder& NGFragmentBuilder::SetMarginStrutBlockStart( |
56 const NGMarginStrut& from) { | 123 const NGMarginStrut& from) { |
57 margin_strut_.margin_block_start = from.margin_block_start; | 124 margin_strut_.margin_block_start = from.margin_block_start; |
58 margin_strut_.negative_margin_block_start = from.negative_margin_block_start; | 125 margin_strut_.negative_margin_block_start = from.negative_margin_block_start; |
59 return *this; | 126 return *this; |
60 } | 127 } |
61 | 128 |
62 NGFragmentBuilder& NGFragmentBuilder::SetMarginStrutBlockEnd( | 129 NGFragmentBuilder& NGFragmentBuilder::SetMarginStrutBlockEnd( |
63 const NGMarginStrut& from) { | 130 const NGMarginStrut& from) { |
64 margin_strut_.margin_block_end = from.margin_block_end; | 131 margin_strut_.margin_block_end = from.margin_block_end; |
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76 children.reserveCapacity(children_.size()); | 143 children.reserveCapacity(children_.size()); |
77 | 144 |
78 for (size_t i = 0; i < children_.size(); ++i) { | 145 for (size_t i = 0; i < children_.size(); ++i) { |
79 NGPhysicalFragmentBase* child = children_[i].get(); | 146 NGPhysicalFragmentBase* child = children_[i].get(); |
80 child->SetOffset(offsets_[i].ConvertToPhysical( | 147 child->SetOffset(offsets_[i].ConvertToPhysical( |
81 writing_mode_, direction_, physical_size, child->Size())); | 148 writing_mode_, direction_, physical_size, child->Size())); |
82 children.append(child); | 149 children.append(child); |
83 } | 150 } |
84 return new NGPhysicalFragment( | 151 return new NGPhysicalFragment( |
85 physical_size, overflow_.ConvertToPhysical(writing_mode_), children, | 152 physical_size, overflow_.ConvertToPhysical(writing_mode_), children, |
86 out_of_flow_descendants_, out_of_flow_offsets_, margin_strut_); | 153 out_of_flow_descendants_, out_of_flow_positions_, margin_strut_); |
87 } | 154 } |
88 | 155 |
89 DEFINE_TRACE(NGFragmentBuilder) { | 156 DEFINE_TRACE(NGFragmentBuilder) { |
90 visitor->trace(children_); | 157 visitor->trace(children_); |
| 158 visitor->trace(out_of_flow_descendant_candidates_); |
91 visitor->trace(out_of_flow_descendants_); | 159 visitor->trace(out_of_flow_descendants_); |
92 } | 160 } |
93 | 161 |
94 } // namespace blink | 162 } // namespace blink |
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