third_party/WebKit/Source/core/style/StyleSelfAlignmentData.h

   1 // Copyright (c) 2015 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 StyleSelfAlignmentData_h
   6 #define StyleSelfAlignmentData_h
   7
   8 #include "core/style/ComputedStyleConstants.h"
   9 #include "wtf/Allocator.h"
  10
  11 namespace blink {
  12
  13 class StyleSelfAlignmentData {
  14     DISALLOW_ALLOCATION();
  15 public:
  16     // Style data for Self-Aligment and Default-Alignment properties: align-{self, items}, justify-{self, items}.
  17     // [ <self-position> && <overflow-position>? ] | [ legacy && [ left | right | center ] ]
  18     StyleSelfAlignmentData(ItemPosition position, OverflowAlignment overflow, ItemPositionType positionType = NonLegacyPosition)
  19         : m_position(position)
  20         , m_positionType(positionType)
  21         , m_overflow(overflow)
  22     {
  23     }
  24
  25     void setPosition(ItemPosition position) { m_position = position; }
  26     void setPositionType(ItemPositionType positionType) { m_positionType = positionType; }
  27     void setOverflow(OverflowAlignment overflow) { m_overflow = overflow; }
  28
  29     ItemPosition position() const { return static_cast<ItemPosition>(m_position); }
  30     ItemPositionType positionType() const { return static_cast<ItemPositionType>(m_positionType); }
  31     OverflowAlignment overflow() const { return static_cast<OverflowAlignment>(m_overflow); }
  32
  33     bool operator==(const StyleSelfAlignmentData& o) const
  34     {
  35         return m_position == o.m_position && m_positionType == o.m_positionType && m_overflow == o.m_overflow;
  36     }
  37
  38     bool operator!=(const StyleSelfAlignmentData& o) const
  39     {
  40         return !(*this == o);
  41     }
  42
  43 private:
  44     unsigned m_position : 4; // ItemPosition
  45     unsigned m_positionType: 1; // Whether or not alignment uses the 'legacy' keyword.
  46     unsigned m_overflow : 2; // OverflowAlignment
  47 };
  48
  49 } // namespace blink
  50
  51 #endif // StyleSelfAlignmentData_h