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71 lines
2.9 KiB
C++
71 lines
2.9 KiB
C++
/*
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* Copyright (C) 2011 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SKY_ENGINE_PLATFORM_CALCULATIONVALUE_H_
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#define SKY_ENGINE_PLATFORM_CALCULATIONVALUE_H_
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#include "flutter/sky/engine/platform/Length.h"
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#include "flutter/sky/engine/platform/LengthFunctions.h"
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#include "flutter/sky/engine/wtf/OwnPtr.h"
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#include "flutter/sky/engine/wtf/PassOwnPtr.h"
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#include "flutter/sky/engine/wtf/RefCounted.h"
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namespace blink {
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class PLATFORM_EXPORT CalculationValue : public RefCounted<CalculationValue> {
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public:
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static PassRefPtr<CalculationValue> create(PixelsAndPercent value,
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ValueRange range) {
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return adoptRef(new CalculationValue(value, range));
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}
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float evaluate(float maxValue) const {
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return pixels() + percent() / 100 * maxValue;
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}
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bool operator==(const CalculationValue& o) const {
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return pixels() == o.pixels() && percent() == o.percent();
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}
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bool isNonNegative() const { return m_isNonNegative; }
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float pixels() const { return m_value.pixels; }
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float percent() const { return m_value.percent; }
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PixelsAndPercent pixelsAndPercent() const { return m_value; }
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private:
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CalculationValue(PixelsAndPercent value, ValueRange range)
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: m_value(value), m_isNonNegative(range == ValueRangeNonNegative) {}
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PixelsAndPercent m_value;
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bool m_isNonNegative;
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};
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} // namespace blink
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#endif // SKY_ENGINE_PLATFORM_CALCULATIONVALUE_H_
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