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IDProjectCategoryView StatusDate SubmittedLast Update
0001633graphvizDotpublic2009-06-30 07:562011-04-28 04:03
ReporterMark Diekhans 
Assigned Toerg 
PrioritynormalSeveritymajorReproducibilityalways
StatusclosedResolutionfixed 
PlatformOS*-*-OS Version
Summary0001633: PDF output empty or hidden text
Description



pdf created with no visible content.



When dot is run on linux, the pdf does is blank when view with acroread or xpdf.
When run, on OS/X, the \<A HREF="b1679a.pdf"\>graph\</A\> is visible in Preview,
but not acroread. Acrobat indicate the graph is hidden text.
Additional Information

[erg] I'm guessing that the problem is the size of the layout, which is 57958 x 4040. The PDF standard limits both dimensions to 14400.
As your drawing is 67 feet wide, you might want to use the size attribute to scale it down. You can then use a viewer to zoom in
for more detail.

I don't know why cairo (or ps2pdf) does not produce a warning.

To me the odder fact is that the linux output is 10 times bigger than the mac output.

[ellson]
I think older versions of cairo resorted to images in the PDF for "correctness".
Later versions of cairo have eliminated most of these.

Mark's pdfs -
<CD>
  350357 linux.pdf
    43397 mac.pdf
</CD>

On Fedora 11 with latest graphviz snapshot built with cairo-1.8.6, I get

<CD>
    78996 tree062909.pdf
</CD>

PDFs are vector output, so we don't catch the large size with the checks we have for bitmap images.
We could to add a check for 14400 into plugins/pango/gvrender_pango.c if you like?

[mark]
It would be create if graphviz could prevent the creation of
invalid PDFs. Cairo falling back to a bitmap isn't a good
response, IMHO, since if I wanted a bitmap, I would have ask for
it. I would actually make this an error rather than a warning,
as these problems are hard to track down and graphviz is often
used in non-interactive scripts.
TagsNo tags attached.
AUXILLARY-FILEShttp://www.graphviz.org/bugs/b1679a.pdf [^]
DATE-FIXED
FIX-COMMENT
FORMER-ID1679
INPUT-FILEhttp://www.graphviz.org/bugs/b1679.dot [^]
OUTPUT-FILEhttp://www.graphviz.org/bugs/b1679.pdf [^]
STATUS-COMMENTFixed (30 Jun 2009)
VERSION     2.22.2
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- Issue History
Date Modified Username Field Change
2011-04-28 04:03 user1 New Issue
2011-04-28 04:03 user1 Assigned To => erg


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