Problem with PDFont.getStringWidth()
Dear all,
I've the following problem with PDFbox. I try to paint a rectangle with
PDPageContentStream and then put a figure in the center of this rectangle.
Therefore I try to calculate the width of the text. The Method getStringWidth
returns everytime the same width for all figures. That means that I get the
same result for "12" and "32". Because the "1" is smaller than the "3"
something is not correct and my "12" is a bit to right.
What is the reason for this?
I get the Font with the following code:
private PDFont getFont() throws IOException {
return PDType1Font.HELVETICA;
}
Thanks!
Re: Problem with PDFont.getStringWidth()
Hi Gerrit,
which version of PDFBox are you using? Could you post a small code snippet to
reproduce the issue? With a quick test I created the numbers do print fine
i.e. they have the same width.
Her my code:
PDDocument doc = new PDDocument();
PDPage page = new PDPage();
doc.addPage( page );
PDFont font = PDType1Font.HELVETICA;
PDPageContentStream contentStream = new PDPageContentStream(doc, page);
contentStream.beginText();
contentStream.setFont( font, 12 );
contentStream.moveTextPositionByAmount( 100, 700 );
contentStream.drawString( " " + font.getStringWidth(""));
contentStream.moveTextPositionByAmount( 0, 20 );
contentStream.drawString( " " + font.getStringWidth(""));
contentStream.moveTextPositionByAmount( 0, 20 );
contentStream.drawString( "12 " + font.getStringWidth("12"));
contentStream.moveTextPositionByAmount( 0, 20 );
contentStream.drawString( "32 " + font.getStringWidth("32"));
contentStream.endText();
contentStream.close();
doc.save( "test.pdf" );
Kind regards
Maruan Sahyoun
Am 05.12.2012 um 14:49 schrieb Gerrit Lober :
> Dear all,
>
> I've the following problem with PDFbox. I try to paint a rectangle with
> PDPageContentStream and then put a figure in the center of this rectangle.
>
> Therefore I try to calculate the width of the text. The Method getStringWidth
> returns everytime the same width for all figures. That means that I get the
> same result for "12" and "32". Because the "1" is smaller than the "3"
> something is not correct and my "12" is a bit to right.
>
> What is the reason for this?
>
> I get the Font with the following code:
> private PDFont getFont() throws IOException {
> return PDType1Font.HELVETICA;
> }
>
> Thanks!
>
Re: Problem with PDFont.getStringWidth()
Hi,
Am 05.12.2012 14:49, schrieb Gerrit Lober:
Dear all,
I've the following problem with PDFbox. I try to paint a rectangle with
PDPageContentStream and then put a figure in the center of this rectangle.
Therefore I try to calculate the width of the text. The Method getStringWidth
returns everytime the same width for all figures. That means that
I get the same result for "12" and "32". Because the "1" is smaller than the "3"
something is not correct and my "12" is a bit to right.
What is the reason for this?
You are right, helvetica is a proportional font (the character width may vary)
but according to the afm-metric file (helvetica.afm) all figures have the same
with of 556. So far so good. Where do you see the displacement, in adobe reader
or when printing?
I get the Font with the following code:
private PDFont getFont() throws IOException {
return PDType1Font.HELVETICA;
}
Thanks!
BR
Andreas Lehmkühler
Re: Problem with PDFont.getStringWidth()
Dear Andreas, thanks, I think you answered my question and it is a problem with
helvetica font, that every letter has the same width. Therefore it seem when I
try to center the textposition with
float textPosition = pageCenter.x - (font.getWidth("12")/2);
that my text is not centered because the "1" needs less space than a "3" for
example in Helvetica.
I see that there is an included resource in PDFbox for ArialMT. How can I load
this font?
How can I answer a reply in this mailing list? I don't get your mail in my
inbox.
Thanks!
Re: Problem with PDFont.getStringWidth()
Am 06.12.2012 08:22, schrieb Gerrit Lober:
Dear Andreas, thanks, I think you answered my question and it is a problem with
helvetica font, that every letter has the same width.
Not every letter but the figures
Therefore it seem when I try to center the textposition with
float textPosition = pageCenter.x - (font.getWidth("12")/2);
that my text is not centered because the "1" needs less space than a "3" for
example in Helvetica.
Try to position each character separately
I see that there is an included resource in PDFbox for ArialMT. How can I load
this font?
It is a true type font. Use PDTrueTypeFont#loadTTF()
How can I answer a reply in this mailing list? I don't get your mail in my
inbox.
Send an email to dev-subscr...@pdfbox.apache.org to subscribe to the mailing
list, see [1] for further information.
Thanks!
BR
Andreas Lehmkühler
[1] http://pdfbox.apache.org/mail-lists.html
Re: Problem with PDFont.getStringWidth()
Thanks, but which filename should I use to tell pdfbox to use the font from the
delivered lib?
Original-Nachricht
> Datum: Thu, 06 Dec 2012 18:35:58 +0100
> Von: Andreas Lehmkuehler
> An: dev@pdfbox.apache.org
> CC: Gerrit Lober
> Betreff: Re: Problem with PDFont.getStringWidth()
> Am 06.12.2012 08:22, schrieb Gerrit Lober:
> > Dear Andreas, thanks, I think you answered my question and it is a
> problem with helvetica font, that every letter has the same width.
> Not every letter but the figures
>
> > Therefore it seem when I try to center the textposition with
> >
> > float textPosition = pageCenter.x - (font.getWidth("12")/2);
> >
> > that my text is not centered because the "1" needs less space than a "3"
> for example in Helvetica.
> Try to position each character separately
>
> > I see that there is an included resource in PDFbox for ArialMT. How can
> I load this font?
> It is a true type font. Use PDTrueTypeFont#loadTTF()
>
> > How can I answer a reply in this mailing list? I don't get your mail in
> my inbox.
> Send an email to dev-subscr...@pdfbox.apache.org to subscribe to the
> mailing
> list, see [1] for further information.
>
>
> > Thanks!
> >
>
> BR
> Andreas Lehmkühler
>
> [1] http://pdfbox.apache.org/mail-lists.html
