Hmm, I see what you mean. In your attached files, I completely agree that
SampleQuality.pdf has more resolution, however I'm not duplicating your
results. In fact, I can't seem to get it to work with my CutePDF driver
very well at all. I don't seem to be able to get multiple page output
unless I print to a real printer.
It seems strange that LayerPrinter2 would give you screen resolution since
its whole point is to allow you to specify whatever number of pixels you
want. I mainly use it to save user specified resolution png files.
regards,
Larry
On 1/18/07, Geoffrey G Roy <[EMAIL PROTECTED]> wrote:
Dear Larry
Thanks for the feedback. The terms "quality" and "accurate" might not be
the best (perhaps different terms should be used), but from my observations
there are differences in the results from the two approaches, though the
results that you see will depend on the actual screen resolution, the size
of the LayerViewPanel on the the screen, and the scaling required for the
paper output. I am attaching two pdf files where the difference can be
seen by zooming in using Acrobat Reader.
Some things to note:
1. The size of the two files is quite different, the "accurate" file
being much smaller - and is produced quite a bit faster also.
2. In the "quality" file the text and lines are produced at a much
higher resolution, but not always with their correct absolute size/widths.
3. In the "accurate" file the text and lines have correct
sizes/widths, but at lower resolution.
There are some unknowns here - or at least I may be missing something
fundamental!
In response to Jan-Oliver's comments:
I proceeded with my PrinterPlugin as I have an immediate need to print
maps- even if the approach is relatively simple. It does serve my needs for
the moment, but I would naturally welcome a more comprehensive solution to
printing. The lack of a printing capability in OpenJUMP does seem a major
limitation. Printing on multiple pages also appears an important capability
as some users will have access to large format printers.
Geoff
Larry Becker wrote:
Hi Geoff,
I just tried your latest version of JumpPrinter, and it does work quite
well. I'm not sure I agree with your "quality" vs. "accurate" label
though. In my tests (with SkyJUMP), when I printed to a single page, I
couldn't really see much difference between checking "Quality" or not
(rendered to an HP Color LaserJet 4500N using PCL 6). However, when I
unchecked single page option (giving 4 printed sheets now), the "Quality"
mode clearly had lower resolution, although it had correct text and line
scaling. Unchecking "Quality" caused the text and line width to decrease.
It would seem to me that roles of "quality" and "accuracy" are reversed in
your explanation.
I would have thought that there was a way to set the DPI in Graphic2D,
but I haven't found one. The only technique that I have seen is to scale
the line width and text size based on the printer DPI. This would seem to
imply modification of the JUMP core.
regards,
Larry Becker
On 1/18/07, Geoffrey G Roy <[EMAIL PROTECTED]> wrote:
>
> Dear Larry
>
> Many thanks for the suggestions - your LayerPrinter2 appears to work
> quite well and does what I was asking for but (and more interestingly!)
>
> 1. My original approach copies the graphic context from the existing
> LayerViewPanel, then scales the lot using Graphics2D.scale(). As
> a result, text sizes, line widths and pattern sizes also scale -
> but the highest resolution is maintained on the printer. I call
> this "quality" mode.
> 2. Your approach creates a new LayerViewPanel of an appropriate
> dimension then paints the layers into it (which I had tried but
> failed to achieve previously). In this case the text and line
> sizes are correct, but they appear at a lower resolution (screen
> resolution?). I call this "accurate" mode.
>
> There is a natural trade off between the two approaches - but perhaps we
> can achieve both results! For the moment I have included two print
> options in the plugin so that both can be tried and compared.
>
> Perhaps some expert in Graphics2D might offer a solution?
>
> I have posted a new version on my web site for further testing.
>
> Geoff
>
>
>
> Larry Becker wrote:
> > Hi Geoff,
> >
> > Thanks for all your work on the printing plugin. Our users have
> > been asking for that feature for a long time.
> >
> > In the Printer_Guide you said:
> >
> > Currently the map scaling for printing is done by transforming the
> > screen graphics to
> > match the required printed scale. This means that the printed
> > image will have line
> > thicknesses and font sizes also scaled to match the required
> > printed scale. This
> > approach is not ideal, but until I can figure out how to change
> > the off-screen canvas
> > size to match the printed paper size it is the best available
> > solution.
> >
> > The LayerPrinter2.java
> >
<http://skyjump.cvs.sourceforge.net/skyjump/skyjump/com/ashs/jump/plugin/LayerPrinter2.java?view=log
> >
> > file contains the code we use to cause JUMP to render at a specified
> > resolution. It might be of some help in figuring this out.
> >
> > regards,
> > Larry
> >
> > On 1/14/07, *Geoffrey G Roy* < [EMAIL PROTECTED]
> > <mailto:[EMAIL PROTECTED]>> wrote:
> >
> > The following two JUMP extensions are available for evaluation
> > purposes and feedback:
> >
> > *Printing* - an extension to add printing capabilities to
> > OpenJUMP, including multi-sheet printing and the addition of map
> > furniture (title, scale, north symbol etc).
> >
> > *Updating *- an extension that enables a project file to be
> > updated to reflect a changed location of one or more layer file
> sets.
> >
> > Both can be downloaded from http://www.cadplan.com.au for testing
> > and evaluation and feedback.
> >
> > Geoff Roy
> >
> >
> >
> > --
> > Geoffrey G Roy
> > Cadplan
> > 129 Gloster Street, Subiaco WA 6008
> > Tel: (08) 9381 4870 Fax: (08) 9382 4459
> > Email:
> > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED] >
> > http://www.cadplan.com.au
> >
> >
> > _______________________________________________
> > jump-users mailing list
> > [EMAIL PROTECTED]
> > <mailto:[EMAIL PROTECTED]>
> > http://lists.refractions.net/mailman/listinfo/jump-users
> >
> >
> >
> >
> ------------------------------------------------------------------------
> >
> > _______________________________________________
> > jump-users mailing list
> > [EMAIL PROTECTED]
> > http://lists.refractions.net/mailman/listinfo/jump-users
> >
>
> --
> Geoffrey G Roy
> Cadplan
> 129 Gloster Street, Subiaco WA 6008
> Tel: (08) 9381 4870 Fax: (08) 9382 4459
> Email: [EMAIL PROTECTED]
> http://www.cadplan.com.au
>
> _______________________________________________
> jump-users mailing list
> [EMAIL PROTECTED]
> http://lists.refractions.net/mailman/listinfo/jump-users
>
------------------------------
_______________________________________________
jump-users mailing list
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--
Geoffrey G Roy
Cadplan
129 Gloster Street, Subiaco WA 6008
Tel: (08) 9381 4870 Fax: (08) 9382 4459
Email: [EMAIL PROTECTED]://www.cadplan.com.au
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