Modifying potrusion parameters

Modifying potrusion parameters

[Simonyi András]

Dear ConTeXt-ers,

I am using protrusion and char. expansion for a book project (with
MKIV from the latest ConTeXt minimal), and it works wonderfully, with
the exception of a minor problem: I find the preset protrusion
parameters for  "guillemets" (double angle quotes)  which occur
frequently in my (Italian) text
too large, and would like to modify them.  Relying on the wiki and
mailing-list posts, I realised that the parameters are set in the file
font-ext.lua, but changing this file seems to have no effect on the
typesetting. How should I rebuild/recompile ConTeXt in order to
"apply" my changes?

I am a novice ConTeXt  user, so please forgive me if my question is trivial.

Thanks in advance for your help and best wishes,

András Simonyi, Budapest, Hungary
___________________________________________________________________________________
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
___________________________________________________________________________________

Re: Modifying potrusion parameters

[Hans Hagen]

On 6-11-2011 13:52, Simonyi András wrote:
> Dear ConTeXt-ers,
>
> I am using protrusion and char. expansion for a book project (with
> MKIV from the latest ConTeXt minimal), and it works wonderfully, with
> the exception of a minor problem: I find the preset protrusion
> parameters for  "guillemets" (double angle quotes)  which occur
> frequently in my (Italian) text
> too large, and would like to modify them.  Relying on the wiki and
> mailing-list posts, I realised that the parameters are set in the file
> font-ext.lua, but changing this file seems to have no effect on the
> typesetting. How should I rebuild/recompile ConTeXt in order to
> "apply" my changes?
>
> I am a novice ConTeXt  user, so please forgive me if my question is trivial.

There is no need to change that file, just make a new vector in your style.

\startluacode

local classes = fonts.protrusions.classes
local vectors = fonts.protrusions.vectors

classes.myown = {
     vector = 'myown',
     factor = 1,
}

vectors.myown = table.merged (vectors.quality, {
     [0x002C] = { 0, 2 }, -- comma
})

\stopluacode

\starttext

\showframe

\definefontfeature[whatever][default][protrusion=quality]

\definedfont[Serif*whatever] \setupalign[hanging] \input tufte

\definefontfeature[whatever][default][protrusion=myown]

\definedfont[Serif*whatever] \setupalign[hanging] \input tufte

\stoptext


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
     tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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
___________________________________________________________________________________

Re: Modifying potrusion parameters

[Simonyi András]

Dear Hans,
thanks a lot, your Lua code did the trick.

with best wishes,
Andras

2011/11/6 Hans Hagen <pragma@wxs.nl>:
> On 6-11-2011 13:52, Simonyi András wrote:
>>
>> Dear ConTeXt-ers,
>>
>> I am using protrusion and char. expansion for a book project (with
>> MKIV from the latest ConTeXt minimal), and it works wonderfully, with
>> the exception of a minor problem: I find the preset protrusion
>> parameters for  "guillemets" (double angle quotes)  which occur
>> frequently in my (Italian) text
>> too large, and would like to modify them.  Relying on the wiki and
>> mailing-list posts, I realised that the parameters are set in the file
>> font-ext.lua, but changing this file seems to have no effect on the
>> typesetting. How should I rebuild/recompile ConTeXt in order to
>> "apply" my changes?
>>
>> I am a novice ConTeXt  user, so please forgive me if my question is
>> trivial.
>
> There is no need to change that file, just make a new vector in your style.
>
> \startluacode
>
> local classes = fonts.protrusions.classes
> local vectors = fonts.protrusions.vectors
>
> classes.myown = {
>    vector = 'myown',
>    factor = 1,
> }
>
> vectors.myown = table.merged (vectors.quality, {
>    [0x002C] = { 0, 2 }, -- comma
> })
>
> \stopluacode
>
> \starttext
>
> \showframe
>
> \definefontfeature[whatever][default][protrusion=quality]
>
> \definedfont[Serif*whatever] \setupalign[hanging] \input tufte
>
> \definefontfeature[whatever][default][protrusion=myown]
>
> \definedfont[Serif*whatever] \setupalign[hanging] \input tufte
>
> \stoptext
___________________________________________________________________________________
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
___________________________________________________________________________________