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Posted to fop-dev@xmlgraphics.apache.org by "Müller, Markus" <ma...@sdm.de> on 2003/04/17 17:00:29 UTC
Question about TTFReader (concerning fluttering font)
Hi there,
as mentioned earlier in this mailing list we have trouble with a corporate
font: right aligned numbers are displayed fluttering in PDF. It seems that
the kerning information in the font metrics file is invalid. So the
following question arises: How does TTFReader get the information stored in
the XML file? Are they extracted from the TTF file or does TTFReader compute
(guess) some/all of these values?
Markus
$> -----Ursprüngliche Nachricht-----
$> Von: Müller, Markus
$> Gesendet: Mittwoch, 16. April 2003 16:47
$> An: fop-dev@xml.apache.org
$> Betreff: AW: Support of retrieving markers in FOP ?
$>
$>
$> Hi,
$>
$> sorry, I don't really understand the technical details (see
$> below) - I'm
$> only a FOP *user* ;-)
$> BUT it seems that using markers in a table produces these
$> "certain esoteric
$> cases" (c.e.c), when the markers are placed in a separate
$> (blind) row. And
$> it seems, that placing the markers in a blind column of the
$> table AVOIDS
$> producing these c.e.c. Does this correspond to the technical
$> explanation
$> below or not ???
$>
$> Greets,
$> Markus
$>
$> $> -----Ursprüngliche Nachricht-----
$> $> Von: J.Pietschmann [mailto:j3322ptm@yahoo.de]
$> $> Gesendet: Dienstag, 15. April 2003 00:28
$> $> An: fop-dev@xml.apache.org
$> $> Betreff: Re: Support of retrieving markers in FOP ?
$> $>
$> $>
$> $> Müller, Markus wrote:
$> $> > could anybody explain in a few simple words, what the
$> $> "certain hopefully
$> $> > esoteric cases" are, in which retrieving a marker fails?
$> $> We have some
$> $> > "esoteric" behaviour with FOP regarding markers at the
$> moment....
$> $>
$> $> There are circumstances where the first generated area of a block
$> $> is not properly marked, for example if a nested block follows
$> $> a forced page break. This should not affect
$> $> first-starting-within-page
$> $> but might affect last-starting-within page (you'll get the
$> $> last-before-
$> $> the-really-last in this case, I think). I didn't really
$> $> bother to test
$> $> this properly though. First-including-carryover wont work properly
$> $> if there is an eglible carry-over, because these areas
$> are not marked
$> $> at all. Last-ending-within-page wont work if the FO with
$> the eglible
$> $> marker created an area on a previous page, for the same reason.
$> $>
$> $> J.Pietschmann
$> $>
$> $>
$> $>
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Re: Question about TTFReader (concerning fluttering font)
Posted by "J.Pietschmann" <j3...@yahoo.de>.
Müller, Markus wrote:
> as mentioned earlier in this mailing list we have trouble with a corporate
> font: right aligned numbers are displayed fluttering in PDF. It seems that
> the kerning information in the font metrics file is invalid.
Two additional concerns:
- If the "right aligned numbers" are page number citations, this is
related to a FAQ:
http://xml.apache.org/fop/faq.html#page-number-align
- Word width computation during layout does not use kerning info at
all. This is bad for both justified or right aligned text in
general.
> $> -----Ursprüngliche Nachricht-----
I earlier days people used to snip cruft.
J.Pietschmann
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Re: Question about TTFReader (concerning fluttering font)
Posted by Jeremias Maerki <de...@greenmail.ch>.
TTFFile.java extract these values from the TTF file. I never got round
to investigate the problem so I usually remove all "kerning" elements in
the font metrics XML. That disables kerning but gives me a "flutter-free"
PDF. Somehow, setting kerning="no" in userconfig.xml doesn't help (which
I also haven't investigated yet). Removing the kerning elements is the
best short-term solution. I hope this helps.
On 17.04.2003 17:00:29 Müller, Markus wrote:
> as mentioned earlier in this mailing list we have trouble with a corporate
> font: right aligned numbers are displayed fluttering in PDF. It seems that
> the kerning information in the font metrics file is invalid. So the
> following question arises: How does TTFReader get the information stored in
> the XML file? Are they extracted from the TTF file or does TTFReader compute
> (guess) some/all of these values?
Jeremias Maerki
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