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List:       r-devel
Subject:    Re: [Rd] New version of X11, png and jpeg
From:       Prof Brian Ripley <ripley () stats ! ox ! ac ! uk>
Date:       2008-02-26 15:09:59
Message-ID: alpine.LFD.1.00.0802261507110.17412 () gannet ! stats ! ox ! ac ! uk
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On Tue, 26 Feb 2008, Michael Lawrence wrote:

> On Tue, Feb 26, 2008 at 8:18 AM, Prof Brian Ripley <ripley@stats.ox.ac.uk>
> wrote:
>
>> Revision r44621 supports (in a limited way) cairo 1.0 and hence I believe
>> vanilla FC5 -- I found what purports to be a vanilla FC5 box and it works
>> quite well there.
>>
>> Two people have reported that the svg(), cairo-pdf() and cairo-ps()
>> devices produce blank (but not empty) files.  I was able to confirm that
>> on Debian etch (cairo 1.2.4).  They do work on cairo 1.4.14 (F8) and
>> better on a 1.5.10 snapshot.
>>
>
> My intuition is that there is a missing call to cairo_show_page(). I believe
> this became unnecessary in the 1.4.x series. This should probably be called
> any time there is new page (after the first) and when the device is closed.

Yes, you are quite right (and of course the 1.5.x docs I was reading 
didn't say it was needed).  Unfortunately, that only defers the problems 
as fonts are not handled correctly in 1.2.x, at least on my test machine.

-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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