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      1 /*
      2  * Copyright (C) 2011 Google 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  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef CSSAspectRatioValue_h
     30 #define CSSAspectRatioValue_h
     31 
     32 #include "core/css/CSSValue.h"
     33 
     34 namespace blink {
     35 
     36 class CSSAspectRatioValue : public CSSValue {
     37 public:
     38     static PassRefPtrWillBeRawPtr<CSSAspectRatioValue> create(float numeratorValue, float denominatorValue)
     39     {
     40         return adoptRefWillBeNoop(new CSSAspectRatioValue(numeratorValue, denominatorValue));
     41     }
     42 
     43     String customCSSText() const;
     44 
     45     float numeratorValue() const { return m_numeratorValue; }
     46     float denominatorValue() const { return m_denominatorValue; }
     47 
     48     bool equals(const CSSAspectRatioValue&) const;
     49 
     50     void traceAfterDispatch(Visitor* visitor) { CSSValue::traceAfterDispatch(visitor); }
     51 
     52 private:
     53     CSSAspectRatioValue(float numeratorValue, float denominatorValue)
     54         : CSSValue(AspectRatioClass)
     55         , m_numeratorValue(numeratorValue)
     56         , m_denominatorValue(denominatorValue)
     57     {
     58     }
     59 
     60     float m_numeratorValue;
     61     float m_denominatorValue;
     62 };
     63 
     64 DEFINE_CSS_VALUE_TYPE_CASTS(CSSAspectRatioValue, isAspectRatioValue());
     65 
     66 }
     67 
     68 #endif
     69