| // 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/Vector.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace blink { |
| |
| enum NGExclusionType { |
| NGClearNone = 0, |
| NGClearFloatLeft = 1, |
| NGClearFloatRight = 2, |
| NGClearFragment = 4 |
| }; |
| |
| enum NGFragmentationType { |
| FragmentNone, |
| FragmentPage, |
| FragmentColumn, |
| FragmentRegion |
| }; |
| |
| struct NGExclusion : public GarbageCollected<NGExclusion> { |
| NGExclusion(LayoutUnit top, |
| LayoutUnit right, |
| LayoutUnit bottom, |
| LayoutUnit left) { |
| rect.offset.left = left; |
| rect.offset.top = top; |
| rect.size.width = right - left; |
| rect.size.height = bottom - top; |
| } |
| LayoutUnit Top() const { return rect.offset.top; } |
| LayoutUnit Right() const { return rect.size.width + rect.offset.left; } |
| LayoutUnit Bottom() const { return rect.size.height + rect.offset.top; } |
| LayoutUnit Left() const { return rect.offset.left; } |
| |
| String ToString() const { |
| return String::format("%s,%s %sx%s", |
| rect.offset.left.toString().ascii().data(), |
| rect.offset.top.toString().ascii().data(), |
| rect.size.width.toString().ascii().data(), |
| rect.size.height.toString().ascii().data()); |
| } |
| NGPhysicalRect rect; |
| |
| DEFINE_INLINE_TRACE() {} |
| }; |
| |
| // 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 GarbageCollectedFinalized<NGPhysicalConstraintSpace> { |
| public: |
| NGPhysicalConstraintSpace( |
| NGPhysicalSize container_size, |
| bool fixed_width, |
| bool fixed_height, |
| bool width_direction_triggers_scrollbar, |
| bool height_direction_triggers_scrollbar, |
| NGFragmentationType width_direction_fragmentation_type, |
| NGFragmentationType height_direction_fragmentation_type, |
| bool is_new_fc); |
| |
| NGPhysicalSize ContainerSize() const { return container_size_; } |
| |
| void AddExclusion(const NGExclusion*, unsigned options = 0); |
| const HeapVector<Member<const NGExclusion>>& Exclusions( |
| unsigned options = 0) const; |
| |
| DEFINE_INLINE_TRACE() { visitor->trace(exclusions_); } |
| |
| 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; |
| |
| // Whether the current constraint space is for the newly established |
| // formatting Context |
| unsigned is_new_fc_ : 1; |
| |
| HeapVector<Member<const NGExclusion>> exclusions_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // NGPhysicalConstraintSpace_h |