ConTeXt logo

ConTeXt logo

[Thomas A. Schmitz]

All (and especially Hans...),

where is \CONTEXT (the logo) defined? Looking at the output I get, I  
wonder if it doesn't need a bit of kerning between Con and the  
following T; there's quite a gap between these two letters (at least  
in the font I'm using).

Thanks and all best

Thomas

Re: ConTeXt logo

[Taco Hoekwater]

Thomas A. Schmitz wrote:
> All (and especially Hans...),
> 
> where is \CONTEXT (the logo) defined? Looking at the output I get, I  
> wonder if it doesn't need a bit of kerning between Con and the  
> following T; there's quite a gap between these two letters (at least  in 
> the font I'm using).

Have a look at \ConTeXt in cont-log.tex. The needed spacing  will vary
per font family, of course.

Usually (as for the NTG's journal), we do not even try to get it right.
Our defs are along these lines:

   \def\ConTeXt{Con{\TeX}t}
   \def\LaTeX{La\TeX}
   \def\MF{Metafont}
   \def\MP{Metapost}

etc. (basically, only use the \TeX macro and ignore all else)


Cheers, Taco

Re: ConTeXt logo

[Thomas A. Schmitz]

Wonderful, thanks Taco! I see that somebody had played around with  
kerning the \TeX-part, there was a commented line. I tried a somewhat  
higher value than the default 0.667em, and it seems to be looking  
better now!

Best

Thomas
On Dec 4, 2005, at 3:18 PM, Taco Hoekwater wrote:

> Thomas A. Schmitz wrote:
>> All (and especially Hans...),
>> where is \CONTEXT (the logo) defined? Looking at the output I get,  
>> I  wonder if it doesn't need a bit of kerning between Con and the   
>> following T; there's quite a gap between these two letters (at  
>> least  in the font I'm using).
>
> Have a look at \ConTeXt in cont-log.tex. The needed spacing  will vary
> per font family, of course.
>
> Usually (as for the NTG's journal), we do not even try to get it  
> right.
> Our defs are along these lines:
>
>   \def\ConTeXt{Con{\TeX}t}
>   \def\LaTeX{La\TeX}
>   \def\MF{Metafont}
>   \def\MP{Metapost}
>
> etc. (basically, only use the \TeX macro and ignore all else)
>
>
> Cheers, Taco
> _______________________________________________
> ntg-context mailing list
> ntg-context@ntg.nl
> http://www.ntg.nl/mailman/listinfo/ntg-context

Re: Context logo

[Xan]

En/na Taco Hoekwater ha escrit:
> Xan wrote:
>>
>> Mojca, how is this script for converting pdf file to (newest) eps? 
>> For seeing if newest eps supports transparency.
>
> This has nothing to do with 'newest eps'. It is to do with the appalling
> support for the eps format in the gimp. Eps has had transparant
> backgrounds since day one (a whole quarter-century ago).
>
> Best wishes,
> Taco 
Clear, now.

Thanks for all (all of you),
Xan.
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Re: Context logo

[Taco Hoekwater]

Xan wrote:
> 
> Mojca, how is this script for converting pdf file to (newest) eps? For 
> seeing if newest eps supports transparency.

This has nothing to do with 'newest eps'. It is to do with the appalling
support for the eps format in the gimp. Eps has had transparant
backgrounds since day one (a whole quarter-century ago).

Best wishes,
Taco
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Re: Context logo

[Xan]

En/na Mojca Miklavec ha escrit:
> On Sat, Mar 14, 2009 at 21:52, Xan wrote:
>   
>> So it has transparent background, but why gimp says that eps does not
>> support transparency? Strange. Really strange.
>>     
>
> At least in older versions of (E)PS you cannot use "transparent blue"
> or "transparent red" to fill shapes for example. But the background is
> always transparent even in PostScript in the sense that unless you
> explicitely paint the background with white, you can include your
> image in another document and you won't see any white white
> rectangular border around it.
>   
Okay Mojca.
Anyone knows if newest version of eps support it?
> GIMP doesn't really support EPS. I don't know what you need GIMP for,
> but when I need to convert some EPS or PDF image into transparent PNG,
> I do:
>
> gs -dSAFER -dBATCH -dNOPAUSE \
>   -sDEVICE=pngalpha \
>   -dTextAlphaBits=4 \
>   -dGraphicsAlphaBits=4 \
>   -sOutputFile=converted_file.png \
>   -r100.0 \ (put here whatever number you want)
>   original_file.pdf
>
> You can try that with the logo and you'll notice the transparent
> background with GIMP.
>   
Thanks Mojca for this script. I did the same with gimp with more more 
effort (open eps file, gimp says that it should convert, then a file 
with white background appears and then I substitute white background 
with transparent background, and save as png file. Uf!!).

Mojca, how is this script for converting pdf file to (newest) eps? For 
seeing if newest eps supports transparency.
> Mojca
>   
Regards,
Xan.
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Re: Context logo

[Xan]

En/na Aditya Mahajan ha escrit:
> On Sat, 14 Mar 2009, Xan wrote:
>
>>>
>> Yes, Wolfgang. Now I understand it.
>> The actually process is:
>> texexec prova.tex --> prova.pdf and prova-mpgraph.1 (eps file) 
>> generated.
>>
>> and I see what you said.
>> So it has transparent background, but why gimp says that eps does not 
>> support transparency? Strange. Really strange.
>
> AFAIU, trasparency is implemented using specials in mp code, so the 
> eps (the .1 file) does not contain transparency, but the pdf does. Did 
> you open the pdf or the eps file in gimp?
Aditya, when I open pdf or eps file in gimp, gimp pop-up a windows of 
convert the file. When the conversion is completed, it puts white 
background in the image. So I can't see if pdf has _really_ transparent 
background.

Xan.
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Re: Context logo

[Mojca Miklavec]

On Sat, Mar 14, 2009 at 21:52, Xan wrote:
>
> So it has transparent background, but why gimp says that eps does not
> support transparency? Strange. Really strange.

At least in older versions of (E)PS you cannot use "transparent blue"
or "transparent red" to fill shapes for example. But the background is
always transparent even in PostScript in the sense that unless you
explicitely paint the background with white, you can include your
image in another document and you won't see any white white
rectangular border around it.

GIMP doesn't really support EPS. I don't know what you need GIMP for,
but when I need to convert some EPS or PDF image into transparent PNG,
I do:

gs -dSAFER -dBATCH -dNOPAUSE \
  -sDEVICE=pngalpha \
  -dTextAlphaBits=4 \
  -dGraphicsAlphaBits=4 \
  -sOutputFile=converted_file.png \
  -r100.0 \ (put here whatever number you want)
  original_file.pdf

You can try that with the logo and you'll notice the transparent
background with GIMP.

Mojca
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___________________________________________________________________________________

Re: Context logo

[Aditya Mahajan]

On Sat, 14 Mar 2009, Xan wrote:

>> 
> Yes, Wolfgang. Now I understand it.
> The actually process is:
> texexec prova.tex --> prova.pdf and prova-mpgraph.1 (eps file) generated.
>
> and I see what you said.
> So it has transparent background, but why gimp says that eps does not support 
> transparency? Strange. Really strange.

AFAIU, trasparency is implemented using specials in mp code, so the eps 
(the .1 file) does not contain transparency, but the pdf does. Did you 
open the pdf or the eps file in gimp?

Aditya
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Re: Context logo

[Xan]

[-- Attachment #1: Type: text/plain, Size: 2449 bytes --]

En/na Wolfgang Schuster ha escrit:
>
> Am 14.03.2009 um 20:22 schrieb Xan:
>
>>> I tried to show you the included pdf had a transparent background, 
>>> the color is unimportant.
>>
>> Eh? Can you explain with more details this fact?. I see green the 
>> blackground. Why do you say that it's not important and transparent?
>
> Let me explain this on a example.
>
> \setupcolors[state=start]
> \starttext
> \externalfigure[contextlogo.png][frame=on]
> \page
> \setupbackgrounds[page][background=color,backgroundcolor=red]
> \externalfigure[contextlogo.png][frame=on]
> \stoptext
>
> You can on the first page the background of the picture is white,
> to show the site of the picture I enabled the frame. On the second
> page I set a background color for the entire page and as you can
> see the background of the picture around the circle has the same
> color as the page background, this could only happen because the
> background of the picture is transparent. If you go now back on
> the first page you can now see, the white background is not from
> the picture but from the page background.
>
Yes, Wolfgang. Now I understand it.
The actually process is:
texexec prova.tex --> prova.pdf and prova-mpgraph.1 (eps file) generated.

Try your code for prova.pdf:
\setupcolors[state=start]
\starttext
\externalfigure[prova.pdf][frame=on]
\page
\setupbackgrounds[page][background=color,backgroundcolor=red]
\externalfigure[prova.pdf][frame=on]
\stoptext

and I see what you said.
So it has transparent background, but why gimp says that eps does not 
support transparency? Strange. Really strange.

>
>>> If you're interested I can send you a better version with bold letters.
>>
>> Yes, I want to have "exactly" the same logo of the wiki.
>
> Which size do you need?
Size? The size of the font: the same. But more bold.If you see wiki logo 
have letters more bold than our pdf logo (see attachments)
>
> Wolfgang

Thanks a lot,
Xan.
>
> ___________________________________________________________________________________ 
>
> 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://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________ 
>


[-- Attachment #2: logo-alt4.png --]
[-- Type: image/png, Size: 11428 bytes --]

[-- Attachment #3: prova.pdf --]
[-- Type: application/pdf, Size: 5267 bytes --]

[-- Attachment #4: Type: text/plain, Size: 487 bytes --]

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Re: Context logo

[Wolfgang Schuster]

Am 14.03.2009 um 20:22 schrieb Xan:

>> I tried to show you the included pdf had a transparent background,  
>> the color is unimportant.
>
> Eh? Can you explain with more details this fact?. I see green the  
> blackground. Why do you say that it's not important and transparent?

Let me explain this on a example.

\setupcolors[state=start]
\starttext
\externalfigure[contextlogo.png][frame=on]
\page
\setupbackgrounds[page][background=color,backgroundcolor=red]
\externalfigure[contextlogo.png][frame=on]
\stoptext

You can on the first page the background of the picture is white,
to show the site of the picture I enabled the frame. On the second
page I set a background color for the entire page and as you can
see the background of the picture around the circle has the same
color as the page background, this could only happen because the
background of the picture is transparent. If you go now back on
the first page you can now see, the white background is not from
the picture but from the page background.

>>> I transform your logo.pdf with GIMP and applying transparency in  
>>> green color. The result I save as png file (gimp says me that eps  
>>> does not support transparency!? is it true?).
>>
>> Dunno about eps but AFAIK postscript 3(?) supports transparent  
>> colors.
>
> How do you pass from pdf to postscript?.
> When I run texexec prova.tex I get prova-mpgraph.1 that file says me  
> that it's eps. How can I pass from this file to transparent  
> postscript? or from pdf to postscript?
>
> In theory if postscript support transparent background, eps should  
> do (?)

Dou you need the eps generated or can you also use the pdf generated
from ConTeXt with the included metapost graphic.

>> If you're interested I can send you a better version with bold  
>> letters.
>
> Yes, I want to have "exactly" the same logo of the wiki.

Which size do you need?

Wolfgang

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Re: Context logo

[Xan]

En/na Wolfgang Schuster ha escrit:
>
> Am 14.03.2009 um 17:15 schrieb Xan:
>
>> Eh? Green? I think in transparent.
>
> I tried to show you the included pdf had a transparent background, the 
> color is unimportant.
Eh? Can you explain with more details this fact?. I see green the 
blackground. Why do you say that it's not important and transparent?
>
>> I transform your logo.pdf with GIMP and applying transparency in 
>> green color. The result I save as png file (gimp says me that eps 
>> does not support transparency!? is it true?).
>
> Dunno about eps but AFAIK postscript 3(?) supports transparent colors.
How do you pass from pdf to postscript?.
When I run texexec prova.tex I get prova-mpgraph.1 that file says me 
that it's eps. How can I pass from this file to transparent postscript? 
or from pdf to postscript?

In theory if postscript support transparent background, eps should do (?)


>
>> Please , see the png file and see that background is transparent.
>
> If you're interested I can send you a better version with bold letters.

Yes, I want to have "exactly" the same logo of the wiki.
>
> Wolfgang
>
Thanks Wolfgang for your hacking. ;-)

Regards,
Xan.
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Re: Context logo

[Wolfgang Schuster]

Am 14.03.2009 um 17:15 schrieb Xan:

> Eh? Green? I think in transparent.

I tried to show you the included pdf had a transparent background, the  
color is unimportant.

> I transform your logo.pdf with GIMP and applying transparency in  
> green color. The result I save as png file (gimp says me that eps  
> does not support transparency!? is it true?).

Dunno about eps but AFAIK postscript 3(?) supports transparent colors.

> Please , see the png file and see that background is transparent.

If you're interested I can send you a better version with bold letters.

Wolfgang

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Re: Context logo

[Xan]

[-- Attachment #1: Type: text/plain, Size: 881 bytes --]

En/na Wolfgang Schuster ha escrit:
>
> Am 14.03.2009 um 16:45 schrieb Xan:
>
>> Wolfgang, when I run texexec prova.tex I obtain prova.pdf and 
>> prova-mpgraph.1 Both files have background white and not transparent 
>> background. I don't know how explain it.
>>
>> Perhaps this 
>> [http://www.mediacollege.com/adobe/photoshop/transparent/background.html] 
>> could help you (?).
>>
>> How do you mean that it's already transparent?
>
> \setupcolors[state=start]
> \setupbackgrounds[page][background=color,backgroundcolor=green]
> \starttext
> \externalfigure[prova]
> \stoptext
>
> Wolfgang
>
Eh? Green? I think in transparent. I transform your logo.pdf with GIMP 
and applying transparency in green color. The result I save as png file 
(gimp says me that eps does not support transparency!? is it true?).

Please, see the png file and see that background is transparent.

Xan.

[-- Attachment #2: prova-mpgraph.1-1.png --]
[-- Type: image/png, Size: 16311 bytes --]

[-- Attachment #3: Type: text/plain, Size: 487 bytes --]

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Re: Context logo

[Wolfgang Schuster]

[-- Attachment #1: logo.pdf --]
[-- Type: application/pdf, Size: 10739 bytes --]

[-- Attachment #2: Type: text/plain, Size: 532 bytes --]


Am 14.03.2009 um 16:45 schrieb Xan:

> Wolfgang, when I run texexec prova.tex I obtain prova.pdf and prova- 
> mpgraph.1 Both files have background white and not transparent  
> background. I don't know how explain it.
>
> Perhaps this [http://www.mediacollege.com/adobe/photoshop/transparent/background.html 
> ] could help you (?).
>
> How do you mean that it's already transparent?

\setupcolors[state=start]
\setupbackgrounds[page][background=color,backgroundcolor=green]
\starttext
\externalfigure[prova]
\stoptext

Wolfgang


[-- Attachment #3: Type: text/plain, Size: 487 bytes --]

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