/// <summary>
/// Parse a PathFigureCollection string.
/// </summary>
internal static PathFigureCollection ParsePathFigureCollection(
string pathString,
IFormatProvider formatProvider)
{
PathStreamGeometryContext context = new PathStreamGeometryContext();
AbbreviatedGeometryParser parser = new AbbreviatedGeometryParser();
parser.ParseToGeometryContext(context, pathString, 0 /* curIndex */);
PathGeometry pathGeometry = context.GetPathGeometry();
return(pathGeometry.Figures);
}
/// <summary>
/// Given a mini-language representation of a Geometry - write it to the supplied StreamGeometryContext
/// </summary>
/// <param name="context">context </param>
/// <param name="pathString">path to parse</param>
/// <param name="fillRule">returned fill rule, if the string contains a fill rule set explicitly at the beginning</param>
private static void ParseStringToStreamGeometryContext(StreamGeometryContext context, string pathString, ref FillRule fillRule)
{
// Check to ensure that there's something to parse
if (pathString == null)
{
return;
}
int curIndex = 0;
// skip any leading space
while ((curIndex < pathString.Length) && Char.IsWhiteSpace(pathString, curIndex))
{
curIndex++;
}
// Is there anything to look at?
if (curIndex < pathString.Length)
{
// If so, we only care if the first non-WhiteSpace char encountered is 'F'
if (pathString[curIndex] == 'F')
{
curIndex++;
// Since we found 'F' the next non-WhiteSpace char must be 0 or 1 - look for it.
while ((curIndex < pathString.Length) && Char.IsWhiteSpace(pathString, curIndex))
{
curIndex++;
}
// If we ran out of text, this is an error, because 'F' cannot be specified without 0 or 1
// Also, if the next token isn't 0 or 1, this too is illegal
if ((curIndex == pathString.Length) ||
((pathString[curIndex] != '0') &&
(pathString[curIndex] != '1')))
{
throw new FormatException("Token is not valid.");
}
fillRule = pathString[curIndex] == '0' ? FillRule.EvenOdd : FillRule.Nonzero;
// Increment curIndex to point to the next char
curIndex++;
}
}
AbbreviatedGeometryParser parser = new AbbreviatedGeometryParser(pathString);
parser.ParseToGeometryContext(context, curIndex);
}
/// <summary>
/// Parse a PathFigureCollection string.
/// </summary>
internal static PathFigureCollection ParsePathFigureCollection(
string pathString,
IFormatProvider formatProvider)
{
PathStreamGeometryContext context = new PathStreamGeometryContext();
AbbreviatedGeometryParser parser = new AbbreviatedGeometryParser();
parser.ParseToGeometryContext(context, pathString, 0 /* curIndex */);
PathGeometry pathGeometry = context.GetPathGeometry();
return pathGeometry.Figures;
}
