text: /*
   * Copyright (C) 2010 Apple Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef FontOrientation_h
  #define FontOrientation_h
  
  #include "platform/fonts/Character.h"
  
  namespace blink {
  
  enum class FontOrientation {
      // Horizontal; i.e., writing-mode: horizontal-tb
      Horizontal = 0,
      // Baseline is vertical but use rotated horizontal typography; i.e., writing-mode: vertical-*; text-orientation: sideways-*
      VerticalRotated = 1,
      // Vertical with upright CJK and rotated non-CJK; i.e., writing-mode: vertical-*, text-orientation: mixed
      VerticalMixed = 2,
      // Vertical with all upright; i.e., writing-mode: vertical-*, text-orientation: upright
      VerticalUpright = 3,
  
      BitCount = 2,
  
      AnyUprightMask = 2,
  };
  
  inline bool operator&(FontOrientation value, FontOrientation mask) { return static_cast<unsigned>(value) & static_cast<unsigned>(mask); }
  inline bool isVerticalAnyUpright(FontOrientation orientation) { return orientation & FontOrientation::AnyUprightMask; }
  inline bool isVerticalNonCJKUpright(FontOrientation orientation) { return orientation == FontOrientation::VerticalUpright; }
  inline bool isVerticalUpright(FontOrientation orientation, UChar32 character)
  {
      return orientation == FontOrientation::VerticalUpright
          || (orientation == FontOrientation::VerticalMixed && Character::isUprightInMixedVertical(character));
  }
  inline bool isVerticalBaseline(FontOrientation orientation) { return orientation != FontOrientation::Horizontal; }
  
  } // namespace blink
  
  #endif // FontOrientation_h
  