private void ParsePath(XElement pathElement)
{
var path = new SvgPath();
var d = pathElement.Attribute(this.schema.dAttrName);
if (d == null)
{
return;
}
var value = d.Value;
this.ReadPath(value);
//m 568.6259,522.8354 -27.832,-72.9004 10.3027,0 23.0957,61.377 23.1445,-61.377 10.2539,0 -27.7832,72.9004 L 568.6259,522.8354 Z
}
private SvgPath ReadPath(string value)
{
SvgPath path = new SvgPath();
using (var stringReader = new StringReader(value))
{
var p = new PathParser(stringReader);
SvgPathCommand previousCommand = SvgPathCommand.MoveTo;
bool absolute = true;
for (;;)
{
var verb = p.Lexem;
if (verb == null)
{
break;
}
switch (verb)
{
case "M":
previousCommand = SvgPathCommand.MoveTo;
absolute = true;
p.Consume();
break;
case "m":
previousCommand = SvgPathCommand.MoveTo;
absolute = false;
p.Consume();
break;
case "Z":
case "z":
previousCommand = SvgPathCommand.ClosePath;
absolute = true;
p.Consume();
break;
case "L":
previousCommand = SvgPathCommand.LineTo;
absolute = true;
p.Consume();
break;
case "l":
previousCommand = SvgPathCommand.LineTo;
absolute = false;
p.Consume();
break;
case "H":
previousCommand = SvgPathCommand.HorisontalLineTo;
absolute = true;
p.Consume();
break;
case "h":
previousCommand = SvgPathCommand.HorisontalLineTo;
absolute = false;
p.Consume();
break;
case "V":
previousCommand = SvgPathCommand.VerticalLineTo;
absolute = true;
p.Consume();
break;
case "v":
previousCommand = SvgPathCommand.VerticalLineTo;
absolute = false;
p.Consume();
break;
case "C":
previousCommand = SvgPathCommand.CubicBezier;
absolute = true;
p.Consume();
break;
case "c":
previousCommand = SvgPathCommand.CubicBezier;
absolute = false;
p.Consume();
break;
case "S":
previousCommand = SvgPathCommand.SmoothCubicBezier;
absolute = true;
p.Consume();
break;
case "s":
previousCommand = SvgPathCommand.SmoothCubicBezier;
absolute = false;
p.Consume();
break;
case "Q":
previousCommand = SvgPathCommand.QuadraticBezier;
absolute = true;
p.Consume();
break;
case "q":
previousCommand = SvgPathCommand.QuadraticBezier;
absolute = false;
p.Consume();
break;
case "T":
previousCommand = SvgPathCommand.SmoothQuadraticBezier;
absolute = true;
p.Consume();
break;
case "t":
previousCommand = SvgPathCommand.SmoothQuadraticBezier;
absolute = false;
p.Consume();
break;
case "A":
previousCommand = SvgPathCommand.EllipticalArc;
absolute = true;
p.Consume();
break;
case "a":
previousCommand = SvgPathCommand.EllipticalArc;
absolute = false;
p.Consume();
break;
default:
if (!char.IsDigit(verb[0]) && verb[0] != '-')
{
this.errorHandler.Warning(string.Format("Unknown command {0}", verb));
return path;
}
break;
}
switch (previousCommand)
{
case SvgPathCommand.MoveTo:
p.ConsumeVector();
break;
case SvgPathCommand.LineTo:
p.ConsumeVector();
break;
case SvgPathCommand.HorisontalLineTo:
p.ConsumeFloat();
break;
case SvgPathCommand.VerticalLineTo:
p.ConsumeFloat();
break;
case SvgPathCommand.CubicBezier:
p.ConsumeVector();
p.ConsumeVector();
p.ConsumeVector();
break;
case SvgPathCommand.QuadraticBezier:
p.ConsumeVector();
p.ConsumeVector();
break;
case SvgPathCommand.ClosePath:
break;
case SvgPathCommand.SmoothCubicBezier:
p.ConsumeVector();
p.ConsumeVector();
break;
case SvgPathCommand.SmoothQuadraticBezier:
p.ConsumeVector();
break;
case SvgPathCommand.EllipticalArc:
p.ConsumeVector();
p.Skip(",");
p.ConsumeFloat();
p.Skip(",");
var large_arc_flag = p.ConsumeInt();
p.Skip(",");
var sweep_flag = p.ConsumeInt();
p.Skip(",");
p.ConsumeVector();
break;
default:
throw new ArgumentOutOfRangeException();
}
Trace.WriteLine(verb);
}
}
return path;
}
