* special case to disable italic correction
@ 2014-01-26 19:24 Pablo Rodriguez
2014-01-28 14:14 ` Hans Hagen
0 siblings, 1 reply; 3+ messages in thread
From: Pablo Rodriguez @ 2014-01-26 19:24 UTC (permalink / raw)
To: mailing list for ConTeXt users
Hi Hans,
after reading the relevant part for italic correction in fonts-mkiv.pdf
and enabling it in my documents, I have found a case in which the italic
correction could be improved.
My settings are:
\definefontfeature[default][default][itlc=yes]
\setupitaliccorrection[global,always]
If I get it right, the italic correction should be avoided before points
and commas (these are all the exceptions I can imagine for this case).
The explanation is simple: the space is already at the base line, since
at the glyph base, the inclination of the italic or slanted glyph makes
the right side-bearing larger at the baseline. The issue with italic
correction is mainly with ascenders or at the cap height, but I think it
isn’t at the base line (or the descenders). Because of that I think it
is important to disable italic correction before points and commas.
The sample shows the issue:
\setuppagenumbering[location=]
\definefontfeature[default][default][itlc=yes]
\setupitaliccorrection[global,always]
\starttext
\startTEXpage[offset=1ex]
Abf. {\em Abf}.\\
Abf, {\em Abf},\\
Abf. {\it Abf}.\\
Abf, {\it Abf},
\stopTEXpage
\stoptext
I think it might be worth considering.
Many thanks for your help and your excellent work,
Pablo
--
http://www.ousia.tk
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^ permalink raw reply [flat|nested] 3+ messages in thread* Re: special case to disable italic correction
2014-01-26 19:24 special case to disable italic correction Pablo Rodriguez
@ 2014-01-28 14:14 ` Hans Hagen
2014-01-28 17:51 ` Pablo Rodriguez
0 siblings, 1 reply; 3+ messages in thread
From: Hans Hagen @ 2014-01-28 14:14 UTC (permalink / raw)
To: mailing list for ConTeXt users
On 1/26/2014 8:24 PM, Pablo Rodriguez wrote:
> Hi Hans,
>
> after reading the relevant part for italic correction in fonts-mkiv.pdf
> and enabling it in my documents, I have found a case in which the italic
> correction could be improved.
>
> My settings are:
>
> \definefontfeature[default][default][itlc=yes]
> \setupitaliccorrection[global,always]
>
> If I get it right, the italic correction should be avoided before points
> and commas (these are all the exceptions I can imagine for this case).
> The explanation is simple: the space is already at the base line, since
> at the glyph base, the inclination of the italic or slanted glyph makes
> the right side-bearing larger at the baseline. The issue with italic
> correction is mainly with ascenders or at the cap height, but I think it
> isn’t at the base line (or the descenders). Because of that I think it
> is important to disable italic correction before points and commas.
>
> The sample shows the issue:
>
> \setuppagenumbering[location=]
> \definefontfeature[default][default][itlc=yes]
> \setupitaliccorrection[global,always]
> \starttext
> \startTEXpage[offset=1ex]
> Abf. {\em Abf}.\\
> Abf, {\em Abf},\\
> Abf. {\it Abf}.\\
> Abf, {\it Abf},
> \stopTEXpage
> \stoptext
>
> I think it might be worth considering.
>
> Many thanks for your help and your excellent work,
Hard coded char checking is talking all punctuation is tricky, so i now
use a threshold instead (enabled by default).
\disabledirectives[typesetters.threshold]
% % % % test:
\definefontfeature
[default]
[default]
[itlc=yes]
\setupitaliccorrection
[global,always]
% \enabletrackers[typesetters.italics]
\starttext
\startTEXpage[offset=1ex]
f. {\em f}.\par f, {\em f},\par f. {\it f}.\par f, {\it f},\par
f: {\it f}:\par f; {\it f};\par
x. {\em x}.\par x, {\em x},\par x. {\it x}.\par x, {\it x},\par
x: {\it x}:\par x; {\it x};\par
\stopTEXpage
\stoptext
Will be in next beta.
Hans
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: special case to disable italic correction
2014-01-28 14:14 ` Hans Hagen
@ 2014-01-28 17:51 ` Pablo Rodriguez
0 siblings, 0 replies; 3+ messages in thread
From: Pablo Rodriguez @ 2014-01-28 17:51 UTC (permalink / raw)
To: mailing list for ConTeXt users
On 01/28/2014 03:14 PM, Hans Hagen wrote:
> On 1/26/2014 8:24 PM, Pablo Rodriguez wrote:
>> [...]
>> If I get it right, the italic correction should be avoided before points
>> and commas (these are all the exceptions I can imagine for this case).
>> The explanation is simple: the space is already at the base line, since
>> at the glyph base, the inclination of the italic or slanted glyph makes
>> the right side-bearing larger at the baseline. The issue with italic
>> correction is mainly with ascenders or at the cap height, but I think it
>> isn’t at the base line (or the descenders). Because of that I think it
>> is important to disable italic correction before points and commas.
>> [...]
> Hard coded char checking is talking all punctuation is tricky, so i now
> use a threshold instead (enabled by default).
> [,,,]
> Will be in next beta.
Many thanks for your implementation, Hans.
It works fine now.
Many thanks again for your work,
Pablo
--
http://www.ousia.tk
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
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