[LayoutNG] Initial support for the 'vertical-align' property

third_party/WebKit/Source/core/layout/ng/inline/ng_inline_layout_algorithm.h

 // 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 NGInlineLayoutAlgorithm_h
 #define NGInlineLayoutAlgorithm_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/geometry/ng_logical_offset.h"
+#include "core/layout/ng/inline/ng_inline_box_state.h"
 #include "core/layout/ng/inline/ng_inline_break_token.h"
 #include "core/layout/ng/inline/ng_line_height_metrics.h"
 #include "core/layout/ng/ng_constraint_space_builder.h"
 #include "core/layout/ng/ng_fragment_builder.h"
 #include "core/layout/ng/ng_layout_algorithm.h"
 #include "platform/fonts/FontBaseline.h"
 #include "platform/heap/Handle.h"
 #include "platform/wtf/Vector.h"
 
 namespace blink {
@@ skipping 110 matching lines @@
   void LayoutAndPositionFloat(LayoutUnit end_position, LayoutObject*);
 
   bool PlaceItems(const Vector<LineItemChunk, 32>&);
   void AccumulateUsedFonts(const NGLayoutInlineItem&,
                            const LineItemChunk&,
                            NGLineBoxFragmentBuilder*);
   LayoutUnit PlaceAtomicInline(const NGLayoutInlineItem&,
                                NGLineBoxFragmentBuilder*,
                                NGTextFragmentBuilder*);
 
+  NGInlineBoxState* OnBeginPlaceItems();

[ikilpatrick, 2017/04/18 01:04:37]

Oh, sorry, does it make sense to move, OnBeginPlaceItems, OnOpenTag, OnCloseTag,
etc, inside that object?

+  NGInlineBoxState* OnOpenTag(const NGLayoutInlineItem&,
+                              NGLineBoxFragmentBuilder*,
+                              NGTextFragmentBuilder*);
+  NGInlineBoxState* OnCloseTag(const NGLayoutInlineItem&,
+                               NGLineBoxFragmentBuilder*,
+                               NGInlineBoxState*);
+  void OnEndPlaceItems(NGLineBoxFragmentBuilder*);
+  void EndBoxState(NGInlineBoxState*, NGLineBoxFragmentBuilder*);
+  void ApplyBaselineShift(NGInlineBoxState*, NGLineBoxFragmentBuilder*);
+
   // Finds the next layout opportunity for the next text fragment.
   void FindNextLayoutOpportunity();
 
   Vector<RefPtr<NGLayoutResult>, 32> layout_results_;
+  NGInlineLayoutStateStack box_states_;
   unsigned start_index_ = 0;
   unsigned start_offset_ = 0;
   unsigned last_index_ = 0;
   unsigned end_offset_ = 0;
   unsigned last_break_opportunity_index_ = 0;
   unsigned last_break_opportunity_offset_ = 0;
   LayoutUnit end_position_;
   LayoutUnit last_break_opportunity_position_;
   LayoutUnit content_size_;
   LayoutUnit max_inline_size_;
   FontBaseline baseline_type_ = FontBaseline::kAlphabeticBaseline;
 
   NGLogicalOffset bfc_offset_;
   NGLogicalRect current_opportunity_;
 
   unsigned is_horizontal_writing_mode_ : 1;
   unsigned disallow_first_line_rules_ : 1;
 
   NGConstraintSpaceBuilder space_builder_;
 #if DCHECK_IS_ON()
   unsigned is_bidi_reordered_ : 1;
 #endif
 };
 
 }  // namespace blink
 
 #endif  // NGInlineLayoutAlgorithm_h