* weird behavior of font.feature.effect
@ 2020-11-07 23:57 Sylvain Hubert
2020-11-08 10:19 ` Pablo Rodriguez
0 siblings, 1 reply; 4+ messages in thread
From: Sylvain Hubert @ 2020-11-07 23:57 UTC (permalink / raw)
To: mailing list for ConTeXt users
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Dear List,
I'm confused by the result of the following example (see attached):
\definefontfamily[face1][rm][gabriola][it={features:{default}}]
\definefontfamily[face2][rm][gabriola][it={features:{default,
effect={}}}]
\definefontfamily[face3][rm][gabriola][it={features:{default,
effect={width=1.0}}}]
\starttext
\startitemize[n, packed]
\item \switchtobodyfont[face1]\it\dorecurse{100}{a b c }
\item \switchtobodyfont[face2]\it\dorecurse{100}{a b c }
\item \switchtobodyfont[face3]\it\dorecurse{100}{a b c }
\stopitemize
\stoptext
Could someone explain:
1. What does "effect" mean? Why does "effect={}" embolden the fonts even
though nothing ({}) is given as arguments?
2. Similarly, what does "width" do? Why does "width=1.0" shrink the width
of the line instead of doing nothing?
Thanks in advance.
Best,
Sylvain
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: weird behavior of font.feature.effect
2020-11-07 23:57 weird behavior of font.feature.effect Sylvain Hubert
@ 2020-11-08 10:19 ` Pablo Rodriguez
2020-11-08 12:02 ` Sylvain Hubert
0 siblings, 1 reply; 4+ messages in thread
From: Pablo Rodriguez @ 2020-11-08 10:19 UTC (permalink / raw)
To: ntg-context
On 11/8/20 12:57 AM, Sylvain Hubert wrote:
> Dear List,
>
> I'm confused by the result of the following example (see attached):
>
> \definefontfamily[face1][rm][gabriola][it={features:{default}}]
Hi Sylvain,
this is the same as:
\definefontfamily[face1][rm][gabriola]
Just in case, "slanted" is an already defined feature. It slants the font.
> \definefontfamily[face2][rm][gabriola][it={features:{default,
> effect={}}}]
> \definefontfamily[face3][rm][gabriola][it={features:{default,
> effect={width=1.0}}}]
BTW, the documentation is clear
(http://texdoc.net/texmf-dist/doc/context/presentations/bachotex/2018/bachotex-2018-fonteffects.pdf#search=fontfeature):
font features should be defined as such before being deployed.
> Could someone explain:
I will try from what I understand.
> 1. What does "effect" mean?
A ConTeXt (and not OpenType) font feature?
> Why does "effect={}" embolden the fonts even though nothing ({}) is
> given as arguments?
"effect={}" may be reading default values (it might be intended behavior
or not).
But it also could be reading or calculating from previously defined values.
> 2. Similarly, what does "width" do? Why does "width=1.0" shrink the
> width of the line instead of doing nothing?
This might be a bug, because of all the code improvements.
I’m reporting a proper bug.
Pablo
--
http://www.ousia.tk
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: weird behavior of font.feature.effect
2020-11-08 10:19 ` Pablo Rodriguez
@ 2020-11-08 12:02 ` Sylvain Hubert
2020-11-08 12:14 ` Wolfgang Schuster
0 siblings, 1 reply; 4+ messages in thread
From: Sylvain Hubert @ 2020-11-08 12:02 UTC (permalink / raw)
To: mailing list for ConTeXt users
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On Sun, 8 Nov 2020 at 11:24, Pablo Rodriguez <oinos@gmx.es> wrote:
> Hi Sylvain,
>
> this is the same as:
>
> \definefontfamily[face1][rm][gabriola]
>
> Just in case, "slanted" is an already defined feature. It slants the font.
>
> > \definefontfamily[face2][rm][gabriola][it={features:{default,
> > effect={}}}]
> > \definefontfamily[face3][rm][gabriola][it={features:{default,
> > effect={width=1.0}}}]
>
> BTW, the documentation is clear
> (
> http://texdoc.net/texmf-dist/doc/context/presentations/bachotex/2018/bachotex-2018-fonteffects.pdf#search=fontfeature
> ):
> font features should be defined as such before being deployed.
>
> > Could someone explain:
>
> I will try from what I understand.
>
> > 1. What does "effect" mean?
>
> A ConTeXt (and not OpenType) font feature?
>
> > Why does "effect={}" embolden the fonts even though nothing ({}) is
> > given as arguments?
> "effect={}" may be reading default values (it might be intended behavior
> or not).
>
> But it also could be reading or calculating from previously defined values.
>
> > 2. Similarly, what does "width" do? Why does "width=1.0" shrink the
> > width of the line instead of doing nothing?
>
> This might be a bug, because of all the code improvements.
>
> I’m reporting a proper bug.
>
Thank you very much for the explanation and the bug report!
Just in case it helps: the line shrinking disappears with an additional
"delta=0":
\definefontfamily[face3][rm][gabriola][it={features:{default,
effect={width=1.0, delta=0}}}]
Sylvain
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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
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: weird behavior of font.feature.effect
2020-11-08 12:02 ` Sylvain Hubert
@ 2020-11-08 12:14 ` Wolfgang Schuster
0 siblings, 0 replies; 4+ messages in thread
From: Wolfgang Schuster @ 2020-11-08 12:14 UTC (permalink / raw)
To: mailing list for ConTeXt users
Sylvain Hubert schrieb am 08.11.2020 um 13:02:
> On Sun, 8 Nov 2020 at 11:24, Pablo Rodriguez <oinos@gmx.es
> <mailto:oinos@gmx.es>> wrote:
>
> Hi Sylvain,
>
> this is the same as:
>
> \definefontfamily[face1][rm][gabriola]
>
> Just in case, "slanted" is an already defined feature. It slants the
> font.
>
> > \definefontfamily[face2][rm][gabriola][it={features:{default,
> > effect={}}}]
> > \definefontfamily[face3][rm][gabriola][it={features:{default,
> > effect={width=1.0}}}]
>
> BTW, the documentation is clear
> (http://texdoc.net/texmf-dist/doc/context/presentations/bachotex/2018/bachotex-2018-fonteffects.pdf#search=fontfeature):
> font features should be defined as such before being deployed.
>
> > Could someone explain:
>
> I will try from what I understand.
>
> > 1. What does "effect" mean?
>
> A ConTeXt (and not OpenType) font feature?
>
> > Why does "effect={}" embolden the fonts even though nothing ({}) is
> > given as arguments?
> "effect={}" may be reading default values (it might be intended behavior
> or not).
>
> But it also could be reading or calculating from previously defined
> values.
>
> > 2. Similarly, what does "width" do? Why does "width=1.0" shrink the
> > width of the line instead of doing nothing?
>
> This might be a bug, because of all the code improvements.
>
> I’m reporting a proper bug.
>
>
> Thank you very much for the explanation and the bug report!
>
> Just in case it helps: the line shrinking disappears with an additional
> "delta=0":
>
> \definefontfamily[face3][rm][gabriola][it={features:{default,
> effect={width=1.0, delta=0}}}]
Don't set the values within \definefontfamily:
\definefontfeature [myfeature] [effect={width=1.0, delta=0}]
\definefontfamily[face3][rm][gabriola][it={features:{default,myfeature}}]
Wolfgang
___________________________________________________________________________________
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
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archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
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2020-11-08 10:19 ` Pablo Rodriguez
2020-11-08 12:02 ` Sylvain Hubert
2020-11-08 12:14 ` Wolfgang Schuster
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