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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 NGFragmentBuilder_h | 5 #ifndef NGFragmentBuilder_h |
6 #define NGFragmentBuilder_h | 6 #define NGFragmentBuilder_h |
7 | 7 |
8 #include "core/layout/ng/ng_constraint_space.h" | 8 #include "core/layout/ng/ng_constraint_space.h" |
9 #include "core/layout/ng/ng_floating_object.h" | 9 #include "core/layout/ng/ng_floating_object.h" |
10 #include "core/layout/ng/ng_physical_fragment.h" | 10 #include "core/layout/ng/ng_physical_fragment.h" |
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49 // are stored inside builder. | 49 // are stored inside builder. |
50 // | 50 // |
51 // for (child : children) | 51 // for (child : children) |
52 // if (child->position == (Absolute or Fixed)) | 52 // if (child->position == (Absolute or Fixed)) |
53 // builder->AddOutOfFlowChildCandidate(child); | 53 // builder->AddOutOfFlowChildCandidate(child); |
54 // else | 54 // else |
55 // fragment = child->Layout() | 55 // fragment = child->Layout() |
56 // builder->AddChild(fragment) | 56 // builder->AddChild(fragment) |
57 // end | 57 // end |
58 // | 58 // |
59 // Part 2: layout algorithm positions out-of-flow descendants. | 59 // builder->SetInlineSize/SetBlockSize |
60 // | 60 // |
61 // builder->SetInlineSize/SetBlockSize | 61 // Part 2: Out-of-flow layout part positions out-of-flow descendants. |
62 // builder->GetAndClearOutOfFlowDescendantCandidates(oof_candidates); | 62 // |
63 // NGOutOfFlowLayoutPart out_of_flow_layout(container_style, | 63 // NGOutOfFlowLayoutPart(container_style, builder).Run(); |
64 // builder->Size()); | 64 // |
65 // while (oof_candidates.size() > 0) | 65 // See layout part for builder interaction. |
66 // { | |
67 // candidate = oof_candidates.shift(); | |
68 // if (IsContainingBlockForAbsoluteChild(style, candidate_style)) { | |
69 // NGFragmentBase* fragment; | |
70 // NGLogicalOffset* fragment_offset; | |
71 // out_of_flow_layout.Layout(candidate, &fragment, &offset); | |
72 // builder->AddChild(fragment); | |
73 // builder->GetAndClearOutOfFlowDescendantCandidates(child_oof_candidates)
; | |
74 // oof_candidates.prepend(child_oof_candidates); | |
75 // } else { | |
76 // builder->AddOutOfFlowDescendant(); | |
77 // } | |
78 // } | |
79 NGFragmentBuilder& AddOutOfFlowChildCandidate(NGBlockNode*, NGLogicalOffset); | 66 NGFragmentBuilder& AddOutOfFlowChildCandidate(NGBlockNode*, NGLogicalOffset); |
80 | 67 |
81 void GetAndClearOutOfFlowDescendantCandidates(WeakBoxList*, | 68 void GetAndClearOutOfFlowDescendantCandidates(WeakBoxList*, |
82 Vector<NGStaticPosition>*); | 69 Vector<NGStaticPosition>*); |
83 | 70 |
84 NGFragmentBuilder& AddOutOfFlowDescendant(NGBlockNode*, | 71 NGFragmentBuilder& AddOutOfFlowDescendant(NGBlockNode*, |
85 const NGStaticPosition&); | 72 const NGStaticPosition&); |
86 | 73 |
87 NGFragmentBuilder& AddUnpositionedFloat(NGFloatingObject* floating_object); | 74 NGFragmentBuilder& AddUnpositionedFloat(NGFloatingObject* floating_object); |
88 | 75 |
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159 | 146 |
160 Vector<NGLogicalOffset> floating_object_offsets_; | 147 Vector<NGLogicalOffset> floating_object_offsets_; |
161 HeapVector<Member<NGFloatingObject>> positioned_floats_; | 148 HeapVector<Member<NGFloatingObject>> positioned_floats_; |
162 | 149 |
163 Member<NGBreakToken> break_token_; | 150 Member<NGBreakToken> break_token_; |
164 }; | 151 }; |
165 | 152 |
166 } // namespace blink | 153 } // namespace blink |
167 | 154 |
168 #endif // NGFragmentBuilder | 155 #endif // NGFragmentBuilder |
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