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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef NGOutOfFlowLayoutPart_h | |
6 #define NGOutOfFlowLayoutPart_h | |
7 | |
8 #include "core/CoreExport.h" | |
9 | |
10 #include "core/layout/ng/ng_units.h" | |
11 #include "core/layout/ng/ng_constraint_space.h" | |
12 #include "core/layout/ng/ng_absolute_utils.h" | |
13 #include "platform/heap/Handle.h" | |
14 #include "wtf/Optional.h" | |
15 | |
16 namespace blink { | |
17 | |
18 class ComputedStyle; | |
19 class NGBlockNode; | |
20 class NGFragmentBase; | |
21 class NGConstraintSpace; | |
22 | |
23 class CORE_EXPORT NGOutOfFlowLayoutPart | |
cbiesinger
2016/12/21 21:38:50
Can you add a comment to this class in general des
atotic
2016/12/28 19:36:46
done. Added comment, and modifed sample code in
N
| |
24 : public GarbageCollectedFinalized<NGOutOfFlowLayoutPart> { | |
25 public: | |
26 NGOutOfFlowLayoutPart(PassRefPtr<const ComputedStyle>, NGLogicalSize); | |
27 | |
28 // @return true if layout can be performed. | |
cbiesinger
2016/12/21 21:38:50
Add something like: "If false, this fragment shoul
atotic
2016/12/28 19:36:46
done
| |
29 bool StartLayout(NGBlockNode*, const NGStaticPosition&); | |
30 // @return true if layout is complete. | |
31 bool Layout(NGFragmentBase**, NGLogicalOffset*); | |
cbiesinger
2016/12/21 21:38:50
Here too consider using NGLayoutStatus
atotic
2016/12/28 19:36:46
done
| |
32 | |
33 DECLARE_TRACE(); | |
34 | |
35 private: | |
36 bool ComputeInlineSizeEstimate(); | |
37 bool ComputeBlockSizeEstimate(); | |
38 bool ComputeNodeFragment(); | |
39 | |
40 bool contains_fixed_; | |
41 bool contains_absolute_; | |
42 | |
43 enum State { | |
44 kComputeInlineEstimate, | |
45 kPartialPosition, | |
46 kComputeBlockEstimate, | |
47 kFullPosition, | |
48 kGenerateFragment, | |
49 kDone | |
50 }; | |
51 State state_; | |
52 | |
53 NGStaticPosition static_position_; | |
54 NGLogicalOffset parent_offset_; | |
55 NGPhysicalOffset parent_physical_offset_; | |
56 Member<NGConstraintSpace> parent_space_; | |
57 Member<NGBlockNode> node_; | |
58 Member<NGConstraintSpace> node_space_; | |
59 Member<NGFragmentBase> node_fragment_; | |
60 NGAbsolutePhysicalPosition node_position_; | |
61 Optional<LayoutUnit> inline_estimate_; | |
62 Optional<LayoutUnit> block_estimate_; | |
63 }; | |
64 | |
65 } // namespace blink | |
66 | |
67 #endif | |
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