Parameters in \definecolor

Parameters in \definecolor

[Marcin Borkowski]

Hi all,

the manual (the "current draft") says that possible parameters for
\definecolor are:
r,g,b,
c,m,y,k,
s,
h,t,a,p,e

While the first three (rgb), the second four (cmyk) and the third one
(s) are pretty obvious for me - rgb, cmyk and greys, I suppose - I'm
wondering what is the use of the others?

Also, do I get it correctly that if I give all r,g,b,c,m,y,k and s, I
will define the same colorname for rgb, cmyk and grey documents, so
that \setupcolors[cmyk=no], \setupcolors[rgb=no] and
\setupcolors[reduction=yes] (or something similar) will choose only the
rgb/cmyk/s components and ignore the others?

Best,

-- 
Marcin Borkowski
___________________________________________________________________________________
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: Parameters in \definecolor

[Wolfgang Schuster]

Am 09.11.2011 um 18:37 schrieb Marcin Borkowski:

> Hi all,
> 
> the manual (the "current draft") says that possible parameters for
> \definecolor are:
> r,g,b,
> c,m,y,k,
> s,
> h,t,a,p,e
> 
> While the first three (rgb), the second four (cmyk) and the third one
> (s) are pretty obvious for me - rgb, cmyk and greys, I suppose - I'm
> wondering what is the use of the others?

They are explained in the wiki: http://wiki.contextgarden.net/Colors

Hans posted also a while ago a list with all parameters and AFAIR a short explanation, search in the mail archive for the message.

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
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: Parameters in \definecolor

[Marcin Borkowski]

Dnia 2011-11-09, o godz. 19:13:23
Wolfgang Schuster <schuster.wolfgang@googlemail.com> napisał(a):

> 
> Am 09.11.2011 um 18:37 schrieb Marcin Borkowski:
> 
> > Hi all,
> > 
> > the manual (the "current draft") says that possible parameters for
> > \definecolor are:
> > r,g,b,
> > c,m,y,k,
> > s,
> > h,t,a,p,e
> > 
> > While the first three (rgb), the second four (cmyk) and the third
> > one (s) are pretty obvious for me - rgb, cmyk and greys, I suppose
> > - I'm wondering what is the use of the others?
> 
> They are explained in the wiki: http://wiki.contextgarden.net/Colors

Hm, I can't find it there...  Only "t" seems to stand for transparency,
and "e" for the postscript color name (or so).

> Hans posted also a while ago a list with all parameters and AFAIR a
> short explanation, search in the mail archive for the message.

I also couldn't find that; I searched Hans' emails for "color" and
"definecolor", but to no avail, except for that "a" seemingly stands
for "alternative".

Not that this is a serious problem for me, but I'm a bit curious, so
maybe someone could point me to the relevant part in the source and I'd
try to understand it from there?

> 
> Wolfgang

Best,

-- 
Marcin Borkowski
___________________________________________________________________________________
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: Parameters in \definecolor

[Hans Hagen]

On 10-11-2011 08:55, Marcin Borkowski wrote:
> Dnia 2011-11-09, o godz. 19:13:23
> Wolfgang Schuster<schuster.wolfgang@googlemail.com>  napisał(a):
>
>>
>> Am 09.11.2011 um 18:37 schrieb Marcin Borkowski:
>>
>>> Hi all,
>>>
>>> the manual (the "current draft") says that possible parameters for
>>> \definecolor are:
>>> r,g,b,

red
green
blue

>>> c,m,y,k,

cyan
magenta
yellow
black

>>> s,

gray (shade)

>>> h,t,a,p,e

hexadecimal (html like)
transparencyfactor
transparancyalternative
spotcolorfactor
extraspotcolorname (in pdf resource)

Hans

-----------------------------------------------------------------
                                           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: Parameters in \definecolor

[Marcin Borkowski]

Dnia 2011-11-10, o godz. 10:04:55
Hans Hagen <pragma@wxs.nl> napisał(a):

> On 10-11-2011 08:55, Marcin Borkowski wrote:
> > Dnia 2011-11-09, o godz. 19:13:23
> > Wolfgang Schuster<schuster.wolfgang@googlemail.com>  napisał(a):
> >
> >>
> >> Am 09.11.2011 um 18:37 schrieb Marcin Borkowski:
> >>
> >>> Hi all,
> >>>
> >>> the manual (the "current draft") says that possible parameters for
> >>> \definecolor are:
> >>> r,g,b,
> 
> red
> green
> blue

Obvious;).

> 
> >>> c,m,y,k,
> 
> cyan
> magenta
> yellow
> black

As above;).

> 
> >>> s,
> 
> gray (shade)

Didn't think of "shade", but I got that it was gray.

> 
> >>> h,t,a,p,e
> 
> hexadecimal (html like)
> transparencyfactor
> transparancyalternative
> spotcolorfactor
> extraspotcolorname (in pdf resource)

Wow, now it's more clear.  Just one question: what are the
"transparency alternatives"?

Best,

-- 
Marcin Borkowski
___________________________________________________________________________________
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: Parameters in \definecolor

[Aditya Mahajan]

On Sat, 12 Nov 2011, Marcin Borkowski wrote:
>> hexadecimal (html like)
>> transparencyfactor
>> transparancyalternative
>> spotcolorfactor
>> extraspotcolorname (in pdf resource)
>
> Wow, now it's more clear.  Just one question: what are the
> "transparency alternatives"?

IIRC, they are documented in the metafun manual.

Aditya
___________________________________________________________________________________
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: Parameters in \definecolor

[Hans Hagen]

On 12-11-2011 20:39, Aditya Mahajan wrote:
> On Sat, 12 Nov 2011, Marcin Borkowski wrote:
>>> hexadecimal (html like)
>>> transparencyfactor
>>> transparancyalternative
>>> spotcolorfactor
>>> extraspotcolorname (in pdf resource)
>>
>> Wow, now it's more clear. Just one question: what are the
>> "transparency alternatives"?
>
> IIRC, they are documented in the metafun manual.

and in the pdf spec

none
normal
multiply
screen
overlay
softlight
hardlight
colordodge
colorburn
darken
lighten
difference
exclusion
hue
saturation
color
luminosity


-----------------------------------------------------------------
                                           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: Parameters in \definecolor

[Marcin Borkowski]

Dnia 2011-11-12, o godz. 21:31:02
Hans Hagen <pragma@wxs.nl> napisał(a):

> On 12-11-2011 20:39, Aditya Mahajan wrote:
> > On Sat, 12 Nov 2011, Marcin Borkowski wrote:
> >>> hexadecimal (html like)
> >>> transparencyfactor
> >>> transparancyalternative
> >>> spotcolorfactor
> >>> extraspotcolorname (in pdf resource)
> >>
> >> Wow, now it's more clear. Just one question: what are the
> >> "transparency alternatives"?
> >
> > IIRC, they are documented in the metafun manual.
> 
> and in the pdf spec
> 
> none
> normal
> multiply
> screen
> overlay
> softlight
> hardlight
> colordodge
> colorburn
> darken
> lighten
> difference
> exclusion
> hue
> saturation
> color
> luminosity

Thanks a lot, they are there indeed!

BTW (not ConTeXt-related): seemigly they are all rendered the same in
evince.

Best,

-- 
Marcin Borkowski
___________________________________________________________________________________
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
___________________________________________________________________________________