| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef NGPhysicalConstraintSpace_h |
| #define NGPhysicalConstraintSpace_h |
| |
| #include "core/CoreExport.h" |
| #include "core/layout/ng/ng_units.h" |
| #include "platform/heap/Handle.h" |
| #include "wtf/DoublyLinkedList.h" |
| |
| namespace blink { |
| |
| enum NGExclusionType { |
| NGClearNone = 0, |
| NGClearFloatLeft = 1, |
| NGClearFloatRight = 2, |
| NGClearFragment = 4 |
| }; |
| |
| enum NGFragmentationType { |
| FragmentNone, |
| FragmentPage, |
| FragmentColumn, |
| FragmentRegion |
| }; |
| |
| enum NGDirection { LeftToRight = 0, RightToLeft = 1 }; |
| |
| class NGExclusion { |
| public: |
| NGExclusion(); |
| ~NGExclusion() {} |
| }; |
| |
| // The NGPhysicalConstraintSpace contains the underlying data for the |
| // NGConstraintSpace. It is not meant to be used directly as all members are in |
| // the physical coordinate space. Instead NGConstraintSpace should be used. |
| class CORE_EXPORT NGPhysicalConstraintSpace final |
| : public GarbageCollected<NGPhysicalConstraintSpace> { |
| public: |
| NGPhysicalConstraintSpace(); |
| NGPhysicalConstraintSpace(NGPhysicalSize); |
| NGPhysicalConstraintSpace(const NGPhysicalConstraintSpace&); |
| |
| NGPhysicalSize ContainerSize() const { return container_size_; } |
| |
| void AddExclusion(const NGExclusion, unsigned options = 0); |
| DoublyLinkedList<const NGExclusion> Exclusions(unsigned options = 0) const; |
| |
| DEFINE_INLINE_TRACE() {} |
| |
| private: |
| friend class NGConstraintSpace; |
| |
| NGPhysicalSize container_size_; |
| |
| unsigned fixed_width_ : 1; |
| unsigned fixed_height_ : 1; |
| unsigned width_direction_triggers_scrollbar_ : 1; |
| unsigned height_direction_triggers_scrollbar_ : 1; |
| unsigned width_direction_fragmentation_type_ : 2; |
| unsigned height_direction_fragmentation_type_ : 2; |
| |
| DoublyLinkedList<const NGExclusion> exclusions_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // NGPhysicalConstraintSpace_h |