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/*
* (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 <wtf/PassRefPtr.h>
namespace WebCore {
class Counter;
class DashboardRegion;
class Pair;
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,
// This unit is in CSS 3, but that isn't a finished standard yet
CSS_TURN = 108
};
static bool isUnitTypeLength(int type) { return type > CSSPrimitiveValue::CSS_PERCENTAGE && type < CSSPrimitiveValue::CSS_DEG; }
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*);
int computeLengthInt(RenderStyle*, double multiplier);
int computeLengthIntForLength(RenderStyle*);
int computeLengthIntForLength(RenderStyle*, double multiplier);
short computeLengthShort(RenderStyle*);
short computeLengthShort(RenderStyle*, double multiplier);
float computeLengthFloat(RenderStyle*, bool computingFontSize = false);
float computeLengthFloat(RenderStyle*, double multiplier, bool computingFontSize = false);
double computeLengthDouble(RenderStyle*, 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; }
unsigned getRGBColorValue(ExceptionCode&) const;
unsigned getRGBColorValue() 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
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