| public AppendItem ( ISvgPathSeg newItem ) : ISvgPathSeg | ||
| newItem | ISvgPathSeg | |
| return | ISvgPathSeg | |
public void TestReadOnlyAppend()
{
SvgPathSegList list = new SvgPathSegList("", true);
list.AppendItem(getLineto());
}
public bool Parse(SvgPathSegList pathList, string pathSegs)
{
if (pathList == null || string.IsNullOrWhiteSpace(pathSegs))
{
return(false);
}
_isClosed = false;
_mayHaveCurves = false;
int closedPath = 0;
SvgPathSeg seg;
string[] paths = RegexPathCmd.Split(pathSegs);
SvgPointF startPoint = new SvgPointF(0, 0);
foreach (string path in paths)
{
string segment = path.Trim();
if (segment.Length == 0)
{
continue;
}
char cmd = segment[0];
double[] coords = SvgNumber.ParseDoubles(segment.Substring(1));
int length = coords.Length;
switch (cmd)
{
// Parse: moveto
case 'M':
for (int i = 0; i < length; i += 2)
{
if (i == 0)
{
seg = new SvgPathSegMovetoAbs(coords[i], coords[i + 1]);
startPoint = new SvgPointF(coords[i], coords[i + 1]);
SvgPointF endPoint = new SvgPointF(coords[i], coords[i + 1]);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
else
{
seg = new SvgPathSegLinetoAbs(coords[i], coords[i + 1]);
SvgPointF endPoint = new SvgPointF(coords[i], coords[i + 1]);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
pathList.AppendItem(seg);
}
break;
case 'm':
for (int i = 0; i < length; i += 2)
{
if (i == 0)
{
seg = new SvgPathSegMovetoRel(coords[i], coords[i + 1]);
SvgPointF endPoint = new SvgPointF(coords[i] + startPoint.X, coords[i + 1] + startPoint.Y);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
else
{
seg = new SvgPathSegLinetoRel(coords[i], coords[i + 1]);
SvgPointF endPoint = new SvgPointF(coords[i] + startPoint.X, coords[i + 1] + startPoint.Y);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
pathList.AppendItem(seg);
}
break;
// End of: moveto
// Parse: lineto
case 'L':
for (int i = 0; i < length; i += 2)
{
seg = new SvgPathSegLinetoAbs(coords[i], coords[i + 1]);
pathList.AppendItem(seg);
SvgPointF endPoint = new SvgPointF(coords[i], coords[i + 1]);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
case 'l':
for (int i = 0; i < length; i += 2)
{
seg = new SvgPathSegLinetoRel(coords[i], coords[i + 1]);
pathList.AppendItem(seg);
SvgPointF endPoint = new SvgPointF(coords[i] + startPoint.X, coords[i + 1] + startPoint.Y);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
case 'H':
for (int i = 0; i < length; i++)
{
seg = new SvgPathSegLinetoHorizontalAbs(coords[i]);
pathList.AppendItem(seg);
SvgPointF endPoint = new SvgPointF(coords[i], startPoint.Y);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
case 'h':
for (int i = 0; i < length; i++)
{
seg = new SvgPathSegLinetoHorizontalRel(coords[i]);
pathList.AppendItem(seg);
SvgPointF endPoint = new SvgPointF(coords[i] + startPoint.X, startPoint.Y);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
case 'V':
for (int i = 0; i < length; i++)
{
seg = new SvgPathSegLinetoVerticalAbs(coords[i]);
pathList.AppendItem(seg);
SvgPointF endPoint = new SvgPointF(startPoint.X, coords[i]);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
case 'v':
for (int i = 0; i < length; i++)
{
seg = new SvgPathSegLinetoVerticalRel(coords[i]);
pathList.AppendItem(seg);
SvgPointF endPoint = new SvgPointF(startPoint.X, coords[i] + startPoint.Y);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
// End of: lineto
// Parse: beziers
case 'C':
for (int i = 0; i < length; i += 6)
{
seg = new SvgPathSegCurvetoCubicAbs(
coords[i + 4],
coords[i + 5],
coords[i],
coords[i + 1],
coords[i + 2],
coords[i + 3]);
pathList.AppendItem(seg);
_mayHaveCurves = true;
SvgPointF endPoint = new SvgPointF(coords[i + 4], coords[i + 5]);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
case 'c':
for (int i = 0; i < length; i += 6)
{
if ((i + 5) >= length)
{
break;
}
seg = new SvgPathSegCurvetoCubicRel(
coords[i + 4],
coords[i + 5],
coords[i],
coords[i + 1],
coords[i + 2],
coords[i + 3]);
pathList.AppendItem(seg);
_mayHaveCurves = true;
SvgPointF endPoint = new SvgPointF(coords[i + 4] + startPoint.X, coords[i + 5] + startPoint.Y);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
case 'S':
for (int i = 0; i < length; i += 4)
{
seg = new SvgPathSegCurvetoCubicSmoothAbs(
coords[i + 2],
coords[i + 3],
coords[i],
coords[i + 1]);
pathList.AppendItem(seg);
_mayHaveCurves = true;
SvgPointF endPoint = new SvgPointF(coords[i + 2], coords[i + 3]);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
case 's':
for (int i = 0; i < length; i += 4)
{
seg = new SvgPathSegCurvetoCubicSmoothRel(
coords[i + 2],
coords[i + 3],
coords[i],
coords[i + 1]);
pathList.AppendItem(seg);
_mayHaveCurves = true;
SvgPointF endPoint = new SvgPointF(coords[i + 2] + startPoint.X, coords[i + 3] + startPoint.Y);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
case 'Q':
for (int i = 0; i < length; i += 4)
{
seg = new SvgPathSegCurvetoQuadraticAbs(
coords[i + 2],
coords[i + 3],
coords[i],
coords[i + 1]);
pathList.AppendItem(seg);
_mayHaveCurves = true;
SvgPointF endPoint = new SvgPointF(coords[i + 2], coords[i + 3]);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
case 'q':
for (int i = 0; i < length; i += 4)
{
seg = new SvgPathSegCurvetoQuadraticRel(
coords[i + 2],
coords[i + 3],
coords[i],
coords[i + 1]);
pathList.AppendItem(seg);
_mayHaveCurves = true;
SvgPointF endPoint = new SvgPointF(coords[i + 2] + startPoint.X, coords[i + 3] + startPoint.Y);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
case 'T':
for (int i = 0; i < length; i += 2)
{
seg = new SvgPathSegCurvetoQuadraticSmoothAbs(
coords[i], coords[i + 1]);
pathList.AppendItem(seg);
_mayHaveCurves = true;
SvgPointF endPoint = new SvgPointF(coords[i], coords[i + 1]);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
case 't':
for (int i = 0; i < length; i += 2)
{
seg = new SvgPathSegCurvetoQuadraticSmoothRel(
coords[i], coords[i + 1]);
pathList.AppendItem(seg);
_mayHaveCurves = true;
SvgPointF endPoint = new SvgPointF(coords[i] + startPoint.X, coords[i + 1] + startPoint.Y);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
break;
// End of: bezier
// Parse: arcs
case 'A':
case 'a':
for (int i = 0; i < length; i += 7)
{
if (cmd == 'A')
{
seg = new SvgPathSegArcAbs(
coords[i + 5],
coords[i + 6],
coords[i],
coords[i + 1],
coords[i + 2],
(!coords[i + 3].Equals(0)),
(!coords[i + 4].Equals(0)));
SvgPointF endPoint = new SvgPointF(coords[i + 5], coords[i + 6]);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
else
{
seg = new SvgPathSegArcRel(
coords[i + 5],
coords[i + 6],
coords[i],
coords[i + 1],
coords[i + 2],
(!coords[i + 3].Equals(0)),
(!coords[i + 4].Equals(0)));
SvgPointF endPoint = new SvgPointF(coords[i + 5] + startPoint.X, coords[i + 6] + startPoint.Y);
seg.Limits = new SvgPointF[] { startPoint, endPoint };
startPoint = endPoint;
}
pathList.AppendItem(seg);
_mayHaveCurves = true;
}
break;
// End of: arcs
// Parse: close
case 'z':
case 'Z':
closedPath++;
seg = new SvgPathSegClosePath();
pathList.AppendItem(seg);
if (pathList.Count >= 2)
{
SvgPointF endPoint = pathList[0].Limits[0];
seg.Limits = new SvgPointF[] { endPoint, startPoint };
startPoint = endPoint;
}
else
{
seg.Limits = new SvgPointF[] { startPoint, startPoint };
startPoint = new SvgPointF(0, 0);
}
break;
// End of: close
// Unknown path command
default:
throw new ApplicationException(string.Format("Unknown path command - ({0})", cmd));
}
}
_isClosed = (closedPath == 1);
return(true);
}
public void MovetoAbs(float x, float y)
{
var seg = new SvgPathSegMovetoAbs(x, y);
_startPoint = new SvgPointF(x, y);
SvgPointF endPoint = new SvgPointF(x, y);
seg.Limits = new SvgPointF[] { _startPoint, endPoint };
_startPoint = endPoint;
_pathList.AppendItem(seg);
}
