| /* |
| * CSS Media Query |
| * |
| * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>. |
| * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef SKY_ENGINE_CORE_CSS_MEDIAQUERYEXP_H_ |
| #define SKY_ENGINE_CORE_CSS_MEDIAQUERYEXP_H_ |
| |
| #include "gen/sky/core/CSSValueKeywords.h" |
| #include "gen/sky/core/MediaFeatureNames.h" |
| #include "sky/engine/core/css/CSSPrimitiveValue.h" |
| #include "sky/engine/core/css/CSSValue.h" |
| #include "sky/engine/wtf/PassOwnPtr.h" |
| #include "sky/engine/wtf/RefPtr.h" |
| |
| namespace blink { |
| class CSSParserValueList; |
| |
| struct MediaQueryExpValue { |
| CSSValueID id; |
| double value; |
| CSSPrimitiveValue::UnitType unit; |
| unsigned numerator; |
| unsigned denominator; |
| |
| bool isID; |
| bool isValue; |
| bool isRatio; |
| |
| MediaQueryExpValue() |
| : id(CSSValueInvalid) |
| , value(0) |
| , unit(CSSPrimitiveValue::CSS_UNKNOWN) |
| , numerator(0) |
| , denominator(1) |
| , isID(false) |
| , isValue(false) |
| , isRatio(false) |
| { |
| } |
| |
| bool isValid() const { return (isID || isValue || isRatio); } |
| String cssText() const; |
| bool equals(const MediaQueryExpValue& expValue) const |
| { |
| if (isID) |
| return (id == expValue.id); |
| if (isValue) |
| return (value == expValue.value); |
| if (isRatio) |
| return (numerator == expValue.numerator && denominator == expValue.denominator); |
| return !expValue.isValid(); |
| } |
| }; |
| |
| class MediaQueryExp { |
| WTF_MAKE_FAST_ALLOCATED; |
| public: |
| static PassOwnPtr<MediaQueryExp> createIfValid(const String& mediaFeature, CSSParserValueList*); |
| ~MediaQueryExp(); |
| |
| const String& mediaFeature() const { return m_mediaFeature; } |
| |
| MediaQueryExpValue expValue() const { return m_expValue; } |
| |
| bool operator==(const MediaQueryExp& other) const; |
| |
| bool isViewportDependent() const; |
| |
| String serialize() const; |
| |
| PassOwnPtr<MediaQueryExp> copy() const { return adoptPtr(new MediaQueryExp(*this)); } |
| |
| MediaQueryExp(const MediaQueryExp& other); |
| |
| private: |
| MediaQueryExp(const String&, const MediaQueryExpValue&); |
| |
| String m_mediaFeature; |
| MediaQueryExpValue m_expValue; |
| }; |
| |
| } // namespace |
| |
| #endif // SKY_ENGINE_CORE_CSS_MEDIAQUERYEXP_H_ |