private void SetLineDash(java.awt.BasicStroke s)
{
float[] dash = s.getDashArray();
if (dash == null)
{
pen.DashStyle = DashStyle.Solid;
} else {
if (dash.Length % 2 == 1)
{
int len = dash.Length;
Array.Resize(ref dash, len * 2);
Array.Copy(dash, 0, dash, len, len);
}
float lineWidth = s.getLineWidth();
if (lineWidth > 1) // for values < 0 there is no correctur needed
{
for (int i = 0; i < dash.Length; i++)
{
//dividing by line thickness because of the representation difference
dash[i] = dash[i] / lineWidth;
}
}
// To fix the problem where solid style in Java can be represented at { 1.0, 0.0 }.
// In .NET, however, array can only have positive value
if (dash.Length == 2 && dash[dash.Length - 1] == 0)
{
Array.Resize(ref dash, 1);
}
float dashPhase = s.getDashPhase();
// correct the dash cap
switch (s.getEndCap())
{
case java.awt.BasicStroke.CAP_BUTT:
pen.DashCap = DashCap.Flat;
break;
case java.awt.BasicStroke.CAP_ROUND:
pen.DashCap = DashCap.Round;
break;
case java.awt.BasicStroke.CAP_SQUARE:
pen.DashCap = DashCap.Flat;
// there is no equals DashCap in .NET, we need to emulate it
dashPhase += lineWidth / 2;
for (int i = 0; i < dash.Length; i++)
{
if (i % 2 == 0)
{
dash[i] += 1;
}
else
{
dash[i] = Math.Max(0.00001F, dash[i] - 1);
}
}
break;
default:
Console.WriteLine("Unknown dash cap type:" + s.getEndCap());
break;
}
// calc the dash offset
if (lineWidth > 0)
{
//dividing by line thickness because of the representation difference
pen.DashOffset = dashPhase / lineWidth;
}
else
{
// thickness == 0
if (dashPhase > 0)
{
pen.Width = lineWidth = 0.001F; // hack to prevent a division with 0
pen.DashOffset = dashPhase / lineWidth;
}
else
{
pen.DashOffset = 0;
}
}
// set the final dash pattern
pen.DashPattern = dash;
}
}
private void setLineCap(java.awt.BasicStroke s)
{
try
{
LineCap plc = J2C.ConvertLineCap(s.getEndCap());
pen.SetLineCap(plc, plc, pen.DashCap);
}
catch (ArgumentException aex)
{
Console.WriteLine(aex.StackTrace);
}
}