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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef CalculationValue_h 32 #define CalculationValue_h 33 34 #include "platform/Length.h" 35 #include "platform/LengthFunctions.h" 36 #include "wtf/OwnPtr.h" 37 #include "wtf/PassOwnPtr.h" 38 #include "wtf/RefCounted.h" 39 #include "wtf/Vector.h" 40 41 namespace WebCore { 42 43 class PLATFORM_EXPORT CalculationValue : public RefCounted<CalculationValue> { 44 public: create(PixelsAndPercent value,ValueRange range)45 static PassRefPtr<CalculationValue> create(PixelsAndPercent value, ValueRange range) 46 { 47 return adoptRef(new CalculationValue(value, range)); 48 } 49 evaluate(float maxValue)50 float evaluate(float maxValue) const { return pixels() + percent() / 100 * maxValue; } 51 bool operator==(const CalculationValue& o) const { return pixels() == o.pixels() && percent() == o.percent(); } isNonNegative()52 bool isNonNegative() const { return m_isNonNegative; } pixels()53 float pixels() const { return m_value.pixels; } percent()54 float percent() const { return m_value.percent; } pixelsAndPercent()55 PixelsAndPercent pixelsAndPercent() const { return m_value; } 56 57 private: CalculationValue(PixelsAndPercent value,ValueRange range)58 CalculationValue(PixelsAndPercent value, ValueRange range) 59 : m_value(value) 60 , m_isNonNegative(range == ValueRangeNonNegative) 61 { 62 } 63 64 PixelsAndPercent m_value; 65 bool m_isNonNegative; 66 }; 67 68 } // namespace WebCore 69 70 #endif // CalculationValue_h 71