🚀 go-pugleaf

Ravi <ravi@gseindia.com> wrote in message 381ED993.5480CF27@gseindia.com...
> Hi all,
>
>        I have a problem in printing using Swing components and Printer
> Job. I have a panel with swing components - labels and check boxes. I
> move values to these controls and call the PrinterJob class's print
> method.
> 1. The printer spooler file grows to 30MB. Is this reasonable? Is there
> a way around it? Or am I missing something?
>
> 2. It takes 3 minutes to spool (because of the big size?).
>
> 3. The printout comes with a grey background. The panel color is set to
> white. How to avoid this grey background?

If your panel contains bitmaps or other items that cannot be printed using
simple
geometric shapes, PrinterJob will render it as a  HUGE image (printer
resolution)
which is then painfully printed in tiny little strips.

You may think 'So? I don't use any icons?'. Well, Swing double buffering is
playing tricks on you... All JPanels are by default double buffered, which
means that your panel first draws itself to an internal bitmap, which is
then
drawn to the PrinterGraphics, which in turn forces PrinterJob into bitmap
mode.

Hints on how to stay in vector mode:
* NO icons.
* NO fancy gradient fills.
* call RepaintManager.setDoubleBufferingEnabled(false) before printing.

The end result might still look a tad strange, since fonts and such are
rendered at 4-8 times screen resolution. *But* it's lightning fast and
doesn't
use much memory either.

HTH