Dear Larry
I have noticed some more issues that you might have seen:
1. If I load a raster layer (using the
de.fhOsnabruek.jump.pirol.plugIns.PirolRasterImage plugin) then my
"quality" options produces a correctly scaled image, while your
"accurate" LayerPrinter2 class does not scale the image at all!-
it appears to come out "natural" size - any thoughts on how to
correctly scale the image?
2. I have also tried printing a WMS layer but that did not work at
all. Has anyone tried this?? I am not sure how to get access to
the WMS image.
3. I use pdf995 as my PDF printer driver - it produces multi-page
images without problems
Geoff
Larry Becker wrote:
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]
<mailto:[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]
<mailto:[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
<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]>
> <mailto:[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]>
<mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> >
> http://www.cadplan.com.au
>
>
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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] <mailto:[EMAIL PROTECTED]>
http://www.cadplan.com.au
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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
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