/* | |
* (C) 1999-2003 Lars Knoll (knoll@kde.org) | |
* Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved. | |
* Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org> | |
* | |
* 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 <wtf/PassRefPtr.h> | |
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<CSSPrimitiveValue> createIdentifier(int ident); | |
static PassRefPtr<CSSPrimitiveValue> createColor(unsigned rgbValue); | |
static PassRefPtr<CSSPrimitiveValue> create(double value, UnitTypes type); | |
static PassRefPtr<CSSPrimitiveValue> create(const String& value, UnitTypes type); | |
template<typename T> static PassRefPtr<CSSPrimitiveValue> 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<float>(getDoubleValue(unitType, ec)); } | |
float getFloatValue(unsigned short unitType) { return static_cast<float>(getDoubleValue(unitType)); } | |
float getFloatValue() const { return static_cast<float>(m_value.num); } | |
int getIntValue(unsigned short unitType, ExceptionCode& ec) { return static_cast<int>(getDoubleValue(unitType, ec)); } | |
int getIntValue(unsigned short unitType) { return static_cast<int>(getDoubleValue(unitType)); } | |
int getIntValue() const { return static_cast<int>(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<RGBColor> 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<typename T> 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<KURL>&, 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<typename T> CSSPrimitiveValue(T); // Defined in CSSPrimitiveValueMappings.h | |
template<typename T> CSSPrimitiveValue(T* val) { init(PassRefPtr<T>(val)); } | |
template<typename T> CSSPrimitiveValue(PassRefPtr<T> val) { init(val); } | |
static void create(int); // compile-time guard | |
static void create(unsigned); // compile-time guard | |
template<typename T> operator T*(); // compile-time guard | |
void init(PassRefPtr<Counter>); | |
void init(PassRefPtr<Rect>); | |
void init(PassRefPtr<Pair>); | |
void init(PassRefPtr<DashboardRegion>); // FIXME: Dashboard region should not be a primitive value. | |
virtual bool isPrimitiveValue() const { return true; } | |
virtual unsigned short cssValueType() const; | |
int m_type; | |
union { | |
int ident; | |
double num; | |
StringImpl* string; | |
Counter* counter; | |
Rect* rect; | |
unsigned rgbcolor; | |
Pair* pair; | |
DashboardRegion* region; | |
} m_value; | |
}; | |
} // namespace WebCore | |
#endif // CSSPrimitiveValue_h |