SVGParserUtilities.h [plain text]
#ifndef SVGParserUtilities_h
#define SVGParserUtilities_h
#if ENABLE(SVG)
#include <PlatformString.h>
namespace WebCore
{
bool parseNumber(const UChar*& ptr, const UChar* end, double& number, bool skip = true);
bool parseNumberOptionalNumber(const String& s, double& h, double& v);
static inline bool isWhitespace(const UChar& c) {
return (c == ' ' || c == '\t' || c == '\n' || c == '\r');
}
static inline bool skipOptionalSpaces(const UChar*& ptr, const UChar* end)
{
while (ptr < end && isWhitespace(*ptr))
ptr++;
return ptr < end;
}
static inline bool skipOptionalSpacesOrDelimiter(const UChar*& ptr, const UChar *end, UChar delimiter = ',')
{
if (ptr < end && !isWhitespace(*ptr) && *ptr != delimiter)
return false;
if (skipOptionalSpaces(ptr, end)) {
if (ptr < end && *ptr == delimiter) {
ptr++;
skipOptionalSpaces(ptr, end);
}
}
return ptr < end;
}
static inline bool skipString(const UChar*& ptr, const UChar*& end, const UChar* name, int length)
{
if (end - ptr < length)
return false;
if (memcmp(name, ptr, sizeof(UChar) * length))
return false;
ptr += length;
return true;
}
static inline bool skipString(const UChar*& ptr, const UChar*& end, const char* str)
{
int length = strlen(str);
if (end - ptr < length)
return false;
for (int i = 0; i < length; ++i)
if (ptr[i] != str[i])
return false;
ptr += length;
return true;
}
class SVGPolyParser
{
public:
virtual ~SVGPolyParser() { }
bool parsePoints(const String& points) const;
protected:
virtual void svgPolyTo(double x1, double y1, int nr) const = 0;
};
class SVGPathParser
{
public:
virtual ~SVGPathParser() { }
bool parseSVG(const String& d, bool process = false);
protected:
virtual void svgMoveTo(float x1, float y1, bool closed, bool abs = true) = 0;
virtual void svgLineTo(float x1, float y1, bool abs = true) = 0;
virtual void svgLineToHorizontal(float x, bool abs = true);
virtual void svgLineToVertical(float y, bool abs = true);
virtual void svgCurveToCubic(float x1, float y1, float x2, float y2, float x, float y, bool abs = true) = 0;
virtual void svgCurveToCubicSmooth(float x, float y, float x2, float y2, bool abs = true);
virtual void svgCurveToQuadratic(float x, float y, float x1, float y1, bool abs = true);
virtual void svgCurveToQuadraticSmooth(float x, float y, bool abs = true);
virtual void svgArcTo(float x, float y, float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag, bool abs = true);
virtual void svgClosePath() = 0;
private:
void calculateArc(bool relative, double& curx, double& cury, double angle, double x, double y, double r1, double r2, bool largeArcFlag, bool sweepFlag);
};
}
#endif // ENABLE(SVG)
#endif