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

   1 /*
   2  * Copyright (C) 2009 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1.  Redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer.
   9  * 2.  Redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  16  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  17  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  20  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  22  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  */
  24
  25 #ifndef LineClampValue_h
  26 #define LineClampValue_h
  27
  28 #include "core/style/ComputedStyleConstants.h"
  29
  30 namespace blink {
  31
  32 class LineClampValue {
  33 public:
  34     LineClampValue()
  35         : m_type(LineClampLineCount)
  36         , m_value(-1)
  37     {
  38     }
  39
  40     LineClampValue(int value, ELineClampType type)
  41         : m_type(type)
  42         , m_value(value)
  43     {
  44     }
  45
  46     int value() const { return m_value; }
  47
  48     bool isPercentage() const { return m_type == LineClampPercentage; }
  49
  50     bool isNone() const { return m_value == -1; }
  51
  52     bool operator==(const LineClampValue& o) const
  53     {
  54         return value() == o.value() && isPercentage() == o.isPercentage();
  55     }
  56
  57     bool operator!=(const LineClampValue& o) const
  58     {
  59         return !(*this == o);
  60     }
  61
  62 private:
  63     ELineClampType m_type;
  64     int m_value;
  65 };
  66
  67 } // namespace blink
  68
  69 #endif // LineClampValue_h