Hi Banjos

For starters you are mixing pixels and points.

Your pdf document is in points.

Your panel is in pixels.

You need to:

a) find out what your pixel per inch value is, likely 96 but not guaranteed. 
Most
Modern apps define their own pixel value.

B) If you are 96 then points = (pixels * .75)
Otherwise, you will need yo figure out the value that gets you to 72. (Points 
per inch)

- Bill Ensley
www.bearprinting.com


----- Original Message -----
From: [email protected]
To: [email protected]
Sent: Thu, 17 May 2012 03:54:35 -0700 (PDT)
Subject: [iText-questions] Scaling imported Swing Elements

Hi, 

 

I use following code to export a jPanel to PDF:

 

Document document = new Document(PageSize.A4);

 try {

 PdfWriter writer = PdfWriter.getInstance(document, new
FileOutputStream("C:\temp\test.pdf"));

 document.open();

 PdfContentByte contentByte = writer.getDirectContent();

 PdfTemplate template = contentByte.createTemplate(500, 500);

 Graphics2D g2 = template.createGraphics(500, 500);

 double w = document.getPageSize().getWidth(); 

 double scale= w / jPanel1.getWidth();

 g2.scale(scale, scale);

 jPanel1.print(g2);

 g2.dispose();

 contentByte.addTemplate(template, 30, 300);

 } catch (Exception e) {

 e.printStackTrace();

 } finally {

 if (document.isOpen()) {

 document.close();

 }

 

It works fine, except for the scaling. I need the Panel to fit A4, but the
resulting document is always much smaller than A4. 

Can you please point out my error, or provide me with some code that works
better ?

 

Thanks,

 

Jannis 

 



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