[Plplot-devel] The cairo device results for the Debian testing pango/cairo stack

[Alan W. I. <ir...@be...>]

The Debian testing pango/cairo stack that I am using now has the following
version information:

libpango1.0-dev  1.18.3-1
libcairo2-dev 1.4.10-1+b2

Debian unstable has the same versions (i.e., there are no big changes for
pango/cairo on the horizon for Debian testing.)

The stack that I built and used for my debian oldstable distro had
the following pango and cairo versions:

pango-1.16.4
cairo-1.4.6

so it is clear that stack was substantially older than the present
debian testing/unstable version.

The good news is this latest stack is better in some ways than
the older stack; all the pdfcairo results look excellent now with full
antialiasing while antialiasing was missing from the pdfcairo results of the
older stack.

Some results seem identical between the latest and older stacks; the excellent
results I had before for pngcairo and xcairo continue as well as the
disappointing results from svgcairo (no text, some other parts of plots are
missing as well, and multipage plots just give the last page).

The bad news is the latest stack produces worse pscairo results than the
older stack; for the latest stack all multi-page examples have large parts
of the plot missing while they are fine for the older stack.  For example,
sometimes you only get a series of blank pages. Fortunately for my research
(where I use single-page pscairo results a lot) all single-page pscairo
examples seem to be fine.

I have no clue what is going wrong for the pscairo multi-page results for
this latest pango/cairo software stack.

Hazen, Andrew, and Orion (every developer I can think of with access to
recent pango/cairo): could you please try and reproduce this problem with
the multi-page pscairo results?

Alan
__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state implementation
for stellar interiors (freeeos.sf.net); PLplot scientific plotting software
package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of
Linux Links project (loll.sf.net); and the Linux Brochure Project
(lbproject.sf.net).
__________________________

Linux-powered Science
__________________________