Hi,
I am using the PdfGraphics2D to print a rather complex UI to a PDF using
iText. I got a problem where rectangles changed their thickness
intermittently. After hours of debugging I found the reason for the change:
Before that I printed a underline string using this code:
AttributedString as = new AttributedString (textToPrint);
as.addAttribute (TextAttribute.FONT, font);
if (isUnderlined)
{
as.addAttribute (TextAttribute.UNDERLINE, TextAttribute.UNDERLINE_ON);
}
pdfGraphics.drawString (as.getIterator (), left, (float) top);
This lead me to debugging the PdfGraphics2D class where I found the
following codeblock:
476 if(underline)
477 {
478 // These two are supposed to be taken from the .AFM file
479 //int UnderlinePosition = -100;
480 int UnderlineThickness = 50;
481 //
482 double d = asPoints((double)UnderlineThickness,
(int)fontSize);
483 setStroke(new BasicStroke((float)d));
484 y = (float)((double)(y) +
asPoints((double)(UnderlineThickness), (int)fontSize));
485 Line2D line = new Line2D.Double((double)x, (double)y,
(double)(width+x), (double)y);
486 draw(line);
487 }
The problem is the setting of the stroke in line 483 without preserving the
current stroke. The fix should be to set the original stroke back after the
draw in line 486 ( make a call to setStroke(oldStroke); in line 487).
Let me know what you think.
Christoph Wagner
PS. And many thanks for the work on this great piece of open source software
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