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109 lines
3.4 KiB
C++
109 lines
3.4 KiB
C++
/*
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* CSS Media Query
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*
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* Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
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* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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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
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* are met:
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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* 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_CORE_CSS_MEDIAQUERYEXP_H_
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#define SKY_ENGINE_CORE_CSS_MEDIAQUERYEXP_H_
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#include "gen/sky/core/CSSValueKeywords.h"
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#include "gen/sky/core/MediaFeatureNames.h"
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#include "sky/engine/core/css/CSSPrimitiveValue.h"
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#include "sky/engine/core/css/CSSValue.h"
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#include "sky/engine/wtf/PassOwnPtr.h"
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#include "sky/engine/wtf/RefPtr.h"
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namespace blink {
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class CSSParserValueList;
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struct MediaQueryExpValue {
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CSSValueID id;
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double value;
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CSSPrimitiveValue::UnitType unit;
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unsigned numerator;
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unsigned denominator;
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bool isID;
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bool isValue;
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bool isRatio;
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MediaQueryExpValue()
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: id(CSSValueInvalid)
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, value(0)
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, unit(CSSPrimitiveValue::CSS_UNKNOWN)
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, numerator(0)
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, denominator(1)
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, isID(false)
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, isValue(false)
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, isRatio(false)
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{
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}
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bool isValid() const { return (isID || isValue || isRatio); }
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String cssText() const;
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bool equals(const MediaQueryExpValue& expValue) const
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{
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if (isID)
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return (id == expValue.id);
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if (isValue)
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return (value == expValue.value);
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if (isRatio)
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return (numerator == expValue.numerator && denominator == expValue.denominator);
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return !expValue.isValid();
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}
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};
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class MediaQueryExp {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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static PassOwnPtr<MediaQueryExp> createIfValid(const String& mediaFeature, CSSParserValueList*);
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~MediaQueryExp();
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const String& mediaFeature() const { return m_mediaFeature; }
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MediaQueryExpValue expValue() const { return m_expValue; }
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bool operator==(const MediaQueryExp& other) const;
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bool isViewportDependent() const;
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String serialize() const;
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PassOwnPtr<MediaQueryExp> copy() const { return adoptPtr(new MediaQueryExp(*this)); }
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MediaQueryExp(const MediaQueryExp& other);
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private:
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MediaQueryExp(const String&, const MediaQueryExpValue&);
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String m_mediaFeature;
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MediaQueryExpValue m_expValue;
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};
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} // namespace
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#endif // SKY_ENGINE_CORE_CSS_MEDIAQUERYEXP_H_
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