diff -r 000000000000 -r 4f2f89ce4247 WebCore/css/CSSPrimitiveValue.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/WebCore/css/CSSPrimitiveValue.h Fri Sep 17 09:02:29 2010 +0300 @@ -0,0 +1,223 @@ +/* + * (C) 1999-2003 Lars Knoll (knoll@kde.org) + * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved. + * Copyright (C) 2007 Alexey Proskuryakov + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef CSSPrimitiveValue_h +#define CSSPrimitiveValue_h + +#include "CSSValue.h" +#include "Color.h" +#include + +namespace WebCore { + +class Counter; +class DashboardRegion; +class Pair; +class RGBColor; +class Rect; +class RenderStyle; +class StringImpl; + +struct Length; + +class CSSPrimitiveValue : public CSSValue { +public: + enum UnitTypes { + CSS_UNKNOWN = 0, + CSS_NUMBER = 1, + CSS_PERCENTAGE = 2, + CSS_EMS = 3, + CSS_EXS = 4, + CSS_PX = 5, + CSS_CM = 6, + CSS_MM = 7, + CSS_IN = 8, + CSS_PT = 9, + CSS_PC = 10, + CSS_DEG = 11, + CSS_RAD = 12, + CSS_GRAD = 13, + CSS_MS = 14, + CSS_S = 15, + CSS_HZ = 16, + CSS_KHZ = 17, + CSS_DIMENSION = 18, + CSS_STRING = 19, + CSS_URI = 20, + CSS_IDENT = 21, + CSS_ATTR = 22, + CSS_COUNTER = 23, + CSS_RECT = 24, + CSS_RGBCOLOR = 25, + CSS_PAIR = 100, // We envision this being exposed as a means of getting computed style values for pairs (border-spacing/radius, background-position, etc.) + CSS_DASHBOARD_REGION = 101, // FIXME: Dashboard region should not be a primitive value. + CSS_UNICODE_RANGE = 102, + + // These next types are just used internally to allow us to translate back and forth from CSSPrimitiveValues to CSSParserValues. + CSS_PARSER_OPERATOR = 103, + CSS_PARSER_INTEGER = 104, + CSS_PARSER_VARIABLE_FUNCTION_SYNTAX = 105, + CSS_PARSER_HEXCOLOR = 106, + + // This is used internally for unknown identifiers + CSS_PARSER_IDENTIFIER = 107, + + // These are from CSS3 Values and Units, but that isn't a finished standard yet + CSS_TURN = 108, + CSS_REMS = 109 + }; + + static bool isUnitTypeLength(int type) { return (type > CSSPrimitiveValue::CSS_PERCENTAGE && type < CSSPrimitiveValue::CSS_DEG) || + type == CSSPrimitiveValue::CSS_REMS; } + + static PassRefPtr createIdentifier(int ident); + static PassRefPtr createColor(unsigned rgbValue); + static PassRefPtr create(double value, UnitTypes type); + static PassRefPtr create(const String& value, UnitTypes type); + + template static PassRefPtr create(T value) + { + return adoptRef(new CSSPrimitiveValue(value)); + } + + virtual ~CSSPrimitiveValue(); + + void cleanup(); + + unsigned short primitiveType() const { return m_type; } + + bool isVariable() const { return m_type == CSS_PARSER_VARIABLE_FUNCTION_SYNTAX; } + + /* + * computes a length in pixels out of the given CSSValue. Need the RenderStyle to get + * the fontinfo in case val is defined in em or ex. + * + * The metrics have to be a bit different for screen and printer output. + * For screen output we assume 1 inch == 72 px, for printer we assume 300 dpi + * + * this is screen/printer dependent, so we probably need a config option for this, + * and some tool to calibrate. + */ + int computeLengthInt(RenderStyle* currStyle, RenderStyle* rootStyle); + int computeLengthInt(RenderStyle* currStyle, RenderStyle* rootStyle, double multiplier); + int computeLengthIntForLength(RenderStyle* currStyle, RenderStyle* rootStyle); + int computeLengthIntForLength(RenderStyle* currStyle, RenderStyle* rootStyle, double multiplier); + short computeLengthShort(RenderStyle* currStyle, RenderStyle* rootStyle); + short computeLengthShort(RenderStyle* currStyle, RenderStyle* rootStyle, double multiplier); + float computeLengthFloat(RenderStyle* currStyle, RenderStyle* rootStyle, bool computingFontSize = false); + float computeLengthFloat(RenderStyle* currStyle, RenderStyle* rootStyle, double multiplier, bool computingFontSize = false); + double computeLengthDouble(RenderStyle* currentStyle, RenderStyle* rootStyle, double multiplier = 1.0, bool computingFontSize = false); + + // use with care!!! + void setPrimitiveType(unsigned short type) { m_type = type; } + + double getDoubleValue(unsigned short unitType, ExceptionCode&); + double getDoubleValue(unsigned short unitType); + double getDoubleValue() const { return m_value.num; } + + void setFloatValue(unsigned short unitType, double floatValue, ExceptionCode&); + float getFloatValue(unsigned short unitType, ExceptionCode& ec) { return static_cast(getDoubleValue(unitType, ec)); } + float getFloatValue(unsigned short unitType) { return static_cast(getDoubleValue(unitType)); } + float getFloatValue() const { return static_cast(m_value.num); } + + int getIntValue(unsigned short unitType, ExceptionCode& ec) { return static_cast(getDoubleValue(unitType, ec)); } + int getIntValue(unsigned short unitType) { return static_cast(getDoubleValue(unitType)); } + int getIntValue() const { return static_cast(m_value.num); } + + void setStringValue(unsigned short stringType, const String& stringValue, ExceptionCode&); + String getStringValue(ExceptionCode&) const; + String getStringValue() const; + + Counter* getCounterValue(ExceptionCode&) const; + Counter* getCounterValue() const { return m_type != CSS_COUNTER ? 0 : m_value.counter; } + + Rect* getRectValue(ExceptionCode&) const; + Rect* getRectValue() const { return m_type != CSS_RECT ? 0 : m_value.rect; } + + PassRefPtr getRGBColorValue(ExceptionCode&) const; + RGBA32 getRGBA32Value() const { return m_type != CSS_RGBCOLOR ? 0 : m_value.rgbcolor; } + + Pair* getPairValue(ExceptionCode&) const; + Pair* getPairValue() const { return m_type != CSS_PAIR ? 0 : m_value.pair; } + + DashboardRegion* getDashboardRegionValue() const { return m_type != CSS_DASHBOARD_REGION ? 0 : m_value.region; } + + int getIdent(); + template inline operator T() const; // Defined in CSSPrimitiveValueMappings.h + + virtual bool parseString(const String&, bool = false); + virtual String cssText() const; + + virtual bool isQuirkValue() { return false; } + + virtual CSSParserValue parserValue() const; + + virtual void addSubresourceStyleURLs(ListHashSet&, const CSSStyleSheet*); + +protected: + // FIXME: int vs. unsigned overloading is too subtle to distinguish the color and identifier cases. + CSSPrimitiveValue(int ident); + CSSPrimitiveValue(double, UnitTypes); + CSSPrimitiveValue(const String&, UnitTypes); + +private: + CSSPrimitiveValue(); + CSSPrimitiveValue(unsigned color); // RGB value + CSSPrimitiveValue(const Length&); + + template CSSPrimitiveValue(T); // Defined in CSSPrimitiveValueMappings.h + template CSSPrimitiveValue(T* val) { init(PassRefPtr(val)); } + template CSSPrimitiveValue(PassRefPtr val) { init(val); } + + static void create(int); // compile-time guard + static void create(unsigned); // compile-time guard + template operator T*(); // compile-time guard + + static PassRefPtr createUncachedIdentifier(int identifier); + static PassRefPtr createUncachedColor(unsigned rgbValue); + static PassRefPtr createUncached(double value, UnitTypes type); + + void init(PassRefPtr); + void init(PassRefPtr); + void init(PassRefPtr); + void init(PassRefPtr); // FIXME: Dashboard region should not be a primitive value. + + virtual bool isPrimitiveValue() const { return true; } + + virtual unsigned short cssValueType() const; + + int m_type : 31; + mutable unsigned m_hasCachedCSSText : 1; + union { + int ident; + double num; + StringImpl* string; + Counter* counter; + Rect* rect; + unsigned rgbcolor; + Pair* pair; + DashboardRegion* region; + } m_value; +}; + +} // namespace WebCore + +#endif // CSSPrimitiveValue_h