#ifndef SVGLength_h
#define SVGLength_h
#if ENABLE(SVG)
#include "ExceptionCode.h"
#include "SVGPropertyTraits.h"
namespace WebCore {
class CSSPrimitiveValue;
enum SVGLengthType {
LengthTypeUnknown = 0,
LengthTypeNumber = 1,
LengthTypePercentage = 2,
LengthTypeEMS = 3,
LengthTypeEXS = 4,
LengthTypePX = 5,
LengthTypeCM = 6,
LengthTypeMM = 7,
LengthTypeIN = 8,
LengthTypePT = 9,
LengthTypePC = 10
};
enum SVGLengthMode {
LengthModeWidth = 0,
LengthModeHeight,
LengthModeOther
};
class SVGElement;
class SVGLength {
public:
enum {
SVG_LENGTHTYPE_UNKNOWN = LengthTypeUnknown,
SVG_LENGTHTYPE_NUMBER = LengthTypeNumber,
SVG_LENGTHTYPE_PERCENTAGE = LengthTypePercentage,
SVG_LENGTHTYPE_EMS = LengthTypeEMS,
SVG_LENGTHTYPE_EXS = LengthTypeEXS,
SVG_LENGTHTYPE_PX = LengthTypePX,
SVG_LENGTHTYPE_CM = LengthTypeCM,
SVG_LENGTHTYPE_MM = LengthTypeMM,
SVG_LENGTHTYPE_IN = LengthTypeIN,
SVG_LENGTHTYPE_PT = LengthTypePT,
SVG_LENGTHTYPE_PC = LengthTypePC
};
SVGLength(SVGLengthMode mode = LengthModeOther, const String& valueAsString = String());
SVGLength(const SVGLength&);
SVGLengthType unitType() const;
bool operator==(const SVGLength&) const;
bool operator!=(const SVGLength&) const;
float value(const SVGElement* context) const;
float value(const SVGElement* context, ExceptionCode&) const;
void setValue(float, const SVGElement* context, ExceptionCode&);
float valueInSpecifiedUnits() const { return m_valueInSpecifiedUnits; }
void setValueInSpecifiedUnits(float value) { m_valueInSpecifiedUnits = value; }
float valueAsPercentage() const;
String valueAsString() const;
void setValueAsString(const String&, ExceptionCode&);
void newValueSpecifiedUnits(unsigned short, float valueInSpecifiedUnits, ExceptionCode&);
void convertToSpecifiedUnits(unsigned short, const SVGElement* context, ExceptionCode&);
inline bool isRelative() const
{
SVGLengthType type = unitType();
return type == LengthTypePercentage || type == LengthTypeEMS || type == LengthTypeEXS;
}
static SVGLength fromCSSPrimitiveValue(CSSPrimitiveValue*);
static PassRefPtr<CSSPrimitiveValue> toCSSPrimitiveValue(const SVGLength&);
private:
bool determineViewport(const SVGElement* context, float& width, float& height) const;
float convertValueFromPercentageToUserUnits(float value, const SVGElement* context, ExceptionCode&) const;
float convertValueFromUserUnitsToPercentage(float value, const SVGElement* context, ExceptionCode&) const;
float convertValueFromUserUnitsToEMS(float value, const SVGElement* context, ExceptionCode&) const;
float convertValueFromEMSToUserUnits(float value, const SVGElement* context, ExceptionCode&) const;
float convertValueFromUserUnitsToEXS(float value, const SVGElement* context, ExceptionCode&) const;
float convertValueFromEXSToUserUnits(float value, const SVGElement* context, ExceptionCode&) const;
private:
float m_valueInSpecifiedUnits;
unsigned int m_unit;
};
template<>
struct SVGPropertyTraits<SVGLength> {
static SVGLength initialValue() { return SVGLength(); }
static String toString(const SVGLength& type) { return type.valueAsString(); }
};
}
#endif // ENABLE(SVG)
#endif // SVGLength_h