Extending the black circled numbers

Extending the black circled numbers

[nico]

Hello,

For those who know, I'm trying to have the DocBook callout mechanism with  
context. Basically, there are some numbers in lines of verbatim text, and  
below the verbatim text the numbers are used to explain the portion of the  
text (kind of footnote). Typically the numbers are rendered white in black  
circle. I could use the Dingbats numbers, but it is limited to 10, so that  
I emulated them with the following code to be able to go up to 99.

The questions I have:
- Is it the right way to do it in context (do I really need metafont?  
Simpler, smarter method?)
- What should I do to make them as anchors, so that it can be  
cross-referenced (I mean, one can click on a hot spot that jump to the  
number in the verbatim text).

Thanks for any hint,

\newdimen \cowidth

% Maximum size of the circle fits for number 99
\def\evalwidth%
   {\bgroup%
    \setbox0\hbox{\small\bf{\ss 99}}%
    \global\cowidth=1.2\wd0%
    \egroup}

% Background black circle
\startuniqueMPgraphic{CoCircle}
   fill fullcircle scaled \overlaywidth withcolor black ;
\stopuniqueMPgraphic

\defineoverlay[cocircle][\uniqueMPgraphic{CoCircle}]

% Display the black circled number
\def\conum#1%
   {\evalwidth%
    \framed[background=cocircle,strut=no,frame=off,
            width=\the\cowidth,height=\the\cowidth,offset=overlay]
            {\color[white]{\small\bf{\ss #1}}}}

\starttext

\dorecurse{99}{\conum{\recurselevel}, }

\stoptext

Regards,
BG

Re: Extending the black circled numbers

[Taco Hoekwater]

nico wrote:
> Hello,
> 
> For those who know, I'm trying to have the DocBook callout mechanism with  
> context. Basically, there are some numbers in lines of verbatim text, and  
> below the verbatim text the numbers are used to explain the portion of the  
> text (kind of footnote). Typically the numbers are rendered white in black  
> circle. I could use the Dingbats numbers, but it is limited to 10, so that  
> I emulated them with the following code to be able to go up to 99.
> 
> The questions I have:
> - Is it the right way to do it in context (do I really need metafont?  
> Simpler, smarter method?)

This is pretty smart, I'd say. Of course it would be better to have an
official font with encircled numbers for reasons of efficiency, but this
looks pretty good and the code is quite clean so i believe you did
well enough. One remark only: if you would know that want them all the
same size (beforehand), you can call \evalwidth only once.

> - What should I do to make them as anchors, so that it can be  
> cross-referenced (I mean, one can click on a hot spot that jump to the  
> number in the verbatim text).

Like this maybe:

   \def\markline#1%
     {\conum{#1}%
      \expanded{\textreference[line#1]{\noexpand\conum{#1}}}}
   \def\refline#1{\in{line }[line#1]}

   \dorecurse{99}{\markline{\recurselevel}, }
   \dorecurse{99}{\refline{\recurselevel}, }



Cheers, taco

Re: Extending the black circled numbers

[Hans Hagen]

nico wrote:
> Hello,
>
> For those who know, I'm trying to have the DocBook callout mechanism with  
> context. Basically, there are some numbers in lines of verbatim text, and  
> below the verbatim text the numbers are used to explain the portion of the  
> text (kind of footnote). Typically the numbers are rendered white in black  
> circle. I could use the Dingbats numbers, but it is limited to 10, so that  
> I emulated them with the following code to be able to go up to 99.
>
> The questions I have:
> - Is it the right way to do it in context (do I really need metafont?  
> Simpler, smarter method?)
> - What should I do to make them as anchors, so that it can be  
> cross-referenced (I mean, one can click on a hot spot that jump to the  
> number in the verbatim text).
>
> Thanks for any hint,
>
> \newdimen \cowidth
>
> % Maximum size of the circle fits for number 99
> \def\evalwidth%
>    {\bgroup%
>     \setbox0\hbox{\small\bf{\ss 99}}%
>     \global\cowidth=1.2\wd0%
>     \egroup}
>
> % Background black circle
> \startuniqueMPgraphic{CoCircle}
>    fill fullcircle scaled \overlaywidth withcolor black ;
> \stopuniqueMPgraphic
>
> \defineoverlay[cocircle][\uniqueMPgraphic{CoCircle}]
>
> % Display the black circled number
> \def\conum#1%
>    {\evalwidth%
>     \framed[background=cocircle,strut=no,frame=off,
>             width=\the\cowidth,height=\the\cowidth,offset=overlay]
>             {\color[white]{\small\bf{\ss #1}}}}
>
> \starttext
>
> \dorecurse{99}{\conum{\recurselevel}, }
>
> \stoptext
>   
\setupcolors[state=start]

\startuniqueMPgraphic{CoCircle}
   fill fullcircle xysized (OverlayWidth,OverlayHeight) withcolor OverlayColor ;
\stopuniqueMPgraphic

\defineoverlay[cocircle][\uniqueMPgraphic{CoCircle}]

\definecolor[CoBackgroundColor] [red]
\definecolor[CoForegroundColor] [white]

\def\conum#1%
   {\setbox\scratchbox\hbox
      {\small\ss\bf
       \setbox\scratchbox\hbox{99}%
       \hbox to 1.2\wd\scratchbox{\hss#1\hss}}%
    \framed
      [background=cocircle,
       offset=overlay,
       frame=off,
       width=\the\wd\scratchbox,
       height=\the\wd\scratchbox,
       backgroundcolor=CoBackgroundColor,
       foregroundcolor=CoForegroundColor]
      {\box\scratchbox}}


\starttext
    \dontleavehmode \dorecurse{99}{\conum{\recurselevel}, }
\stoptext

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

Re: Extending the black circled numbers

[nico]

On Tue, 04 Apr 2006 11:40:30 +0200, Taco Hoekwater <taco@elvenkind.com>  
wrote:

> nico wrote:
>> Hello,
>>
>> For those who know, I'm trying to have the DocBook callout mechanism  
>> with
>> context. [...]. Typically the numbers are rendered white in black
>> circle. I could use the Dingbats numbers, but it is limited to 10, so  
>> that
>> I emulated them with the following code to be able to go up to 99.
>>
>> The questions I have:
>> - Is it the right way to do it in context (do I really need metafont?
>> Simpler, smarter method?)
>
> This is pretty smart, I'd say. Of course it would be better to have an
> official font with encircled numbers for reasons of efficiency, but this
> looks pretty good and the code is quite clean so i believe you did
> well enough.

Ok, thanks.

> One remark only: if you would know that want them all the
> same size (beforehand), you can call \evalwidth only once.

I tried this, but I had a weird behaviour with size (I have the same  
behaviour with the Hans example), and the other thing is that the size to  
use depends on the environment where you are. In the verbatim text (where  
I ask small font) the circled numbers must be smaller than in the current  
text flow.

>> - What should I do to make them as anchors, so that it can be
>> cross-referenced (I mean, one can click on a hot spot that jump to the
>> number in the verbatim text).
>
> Like this maybe:
>
>    \def\markline#1%
>      {\conum{#1}%
>       \expanded{\textreference[line#1]{\noexpand\conum{#1}}}}
>    \def\refline#1{\in{line }[line#1]}
>
>    \dorecurse{99}{\markline{\recurselevel}, }
>    \dorecurse{99}{\refline{\recurselevel}, }

Yes, it works fine! Thanks much!

Regards,
BG

Re: Extending the black circled numbers

[nico]

On Tue, 04 Apr 2006 14:44:28 +0200, Hans Hagen <pragma@wxs.nl> wrote:

> nico wrote:
>> Hello,
>>
>> Typically the numbers are rendered white in black
>> circle. I could use the Dingbats numbers, but it is limited to 10, so  
>> that
>> I emulated them with the following code to be able to go up to 99.
>>
>> The questions I have:
>> - Is it the right way to do it in context (do I really need metafont?
>> Simpler, smarter method?)

> \setupcolors[state=start]
>
> \startuniqueMPgraphic{CoCircle}
>    fill fullcircle xysized (OverlayWidth,OverlayHeight) withcolor  
> OverlayColor ;
> \stopuniqueMPgraphic

I see here the Hans touch again: it's better and I don't really understand  
how it works :-)
But there's something strange: the first circle is greater than the others  
(but the numbers have all the same size). Tracing a bit I see that the  
first circle has a width=16.5333pt, the others 13.19997pt. What's the  
reason for this?

Thanks much!

Regards,
BG

Re: Extending the black circled numbers

[Hans Hagen]

nico wrote:
> On Tue, 04 Apr 2006 14:44:28 +0200, Hans Hagen <pragma@wxs.nl> wrote:
>
>   
>> nico wrote:
>>     
>>> Hello,
>>>
>>> Typically the numbers are rendered white in black
>>> circle. I could use the Dingbats numbers, but it is limited to 10, so  
>>> that
>>> I emulated them with the following code to be able to go up to 99.
>>>
>>> The questions I have:
>>> - Is it the right way to do it in context (do I really need metafont?
>>> Simpler, smarter method?)
>>>       
>
>   
>> \setupcolors[state=start]
>>
>> \startuniqueMPgraphic{CoCircle}
>>    fill fullcircle xysized (OverlayWidth,OverlayHeight) withcolor  
>> OverlayColor ;
>> \stopuniqueMPgraphic
>>     
>
> I see here the Hans touch again: it's better and I don't really understand  
> how it works :-)
> But there's something strange: the first circle is greater than the others  
> (but the numbers have all the same size). Tracing a bit I see that the  
> first circle has a width=16.5333pt, the others 13.19997pt. What's the  
> reason for this?
>   
what os the exact code that you use?how many mp runs do yuo have? 

Hans 

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

Re: Extending the black circled numbers

[nico]

[-- Attachment #1: Type: text/plain, Size: 1330 bytes --]

On Tue, 04 Apr 2006 22:50:58 +0200, Hans Hagen <pragma@wxs.nl> wrote:

> nico wrote:
>> On Tue, 04 Apr 2006 14:44:28 +0200, Hans Hagen <pragma@wxs.nl> wrote:
>>
>>
>>> nico wrote:
>>>
>>>> Hello,
>>>>
>>>> Typically the numbers are rendered white in black
>>>> circle. I could use the Dingbats numbers, but it is limited to 10, so
>>>> that
>>>> I emulated them with the following code to be able to go up to 99.
>>>>
>>>> The questions I have:
>>>> - Is it the right way to do it in context (do I really need metafont?
>>>> Simpler, smarter method?)
>>>>
>>
>>
>>> \setupcolors[state=start]
>>>
>>> \startuniqueMPgraphic{CoCircle}
>>>    fill fullcircle xysized (OverlayWidth,OverlayHeight) withcolor
>>> OverlayColor ;
>>> \stopuniqueMPgraphic
>>>
>>
>> I see here the Hans touch again: it's better and I don't really  
>> understand
>> how it works :-)
>> But there's something strange: the first circle is greater than the  
>> others
>> (but the numbers have all the same size). Tracing a bit I see that the
>> first circle has a width=16.5333pt, the others 13.19997pt. What's the
>> reason for this?
>>
> what os the exact code that you use?how many mp runs do yuo have?

It's exactly the one you gave. I attach the file I compile. Two mpruns; I  
attach the log too.

Regards,
BG

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system          : cotest.top loaded
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specials        : loading definition file tpd
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specials        : loading definition file fdf
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specials        : fdf loaded
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specials        : fdf,tpd loaded
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\openout0 = `mpgraph.mp'.


color           : system rgb is global activated
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systems         : begin file cotest at line 29
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systems         : randomizer starts with 8365963
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Re: Extending the black circled numbers

[Hans Hagen]

nico wrote:
> On Tue, 04 Apr 2006 22:50:58 +0200, Hans Hagen <pragma@wxs.nl> wrote:
>
>> nico wrote:
>>> On Tue, 04 Apr 2006 14:44:28 +0200, Hans Hagen <pragma@wxs.nl> wrote:
>>>
>>>
>>>> nico wrote:
>>>>
>>>>> Hello,
>>>>>
>>>>> Typically the numbers are rendered white in black
>>>>> circle. I could use the Dingbats numbers, but it is limited to 10, so
>>>>> that
>>>>> I emulated them with the following code to be able to go up to 99.
>>>>>
>>>>> The questions I have:
>>>>> - Is it the right way to do it in context (do I really need metafont?
>>>>> Simpler, smarter method?)
>>>>>
>>>
>>>
>>>> \setupcolors[state=start]
>>>>
>>>> \startuniqueMPgraphic{CoCircle}
>>>>    fill fullcircle xysized (OverlayWidth,OverlayHeight) withcolor
>>>> OverlayColor ;
>>>> \stopuniqueMPgraphic
>>>>
>>>
>>> I see here the Hans touch again: it's better and I don't really 
>>> understand
>>> how it works :-)
>>> But there's something strange: the first circle is greater than the 
>>> others
>>> (but the numbers have all the same size). Tracing a bit I see that the
>>> first circle has a width=16.5333pt, the others 13.19997pt. What's the
>>> reason for this?
>>>
>> what os the exact code that you use?how many mp runs do yuo have?
>
> It's exactly the one you gave. I attach the file I compile. Two 
> mpruns; I attach the log too.
one run here .. can you try the beta? i remember a spurious space problem someplace 

Hans 

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

Re: Extending the black circled numbers

[nico]

On Wed, 05 Apr 2006 09:42:51 +0200, Hans Hagen <pragma@wxs.nl> wrote:

>>>> But there's something strange: the first circle is greater than the
>>>> others
>>>> (but the numbers have all the same size). Tracing a bit I see that the
>>>> first circle has a width=16.5333pt, the others 13.19997pt. What's the
>>>> reason for this?
>>>>
>>> what os the exact code that you use?how many mp runs do yuo have?
>>
>> It's exactly the one you gave. I attach the file I compile. Two
>> mpruns; I attach the log too.
> one run here .. can you try the beta? i remember a spurious space  
> problem someplace

Same thing. I've found that I haven't the problem with producing dvi  
instead of pdf. I've limited the case to:

\starttext

\setbox\scratchbox\hbox
       {\small\ss\bf
        \setbox\scratchbox\hbox{99}%
        \hbox to 1.2\wd\scratchbox{\hss1\hss}}
\writestatus{co}{width=\the\wd\scratchbox}%

\setbox\scratchbox\hbox
       {\small\ss\bf
        \setbox\scratchbox\hbox{99}%
        \hbox to 1.2\wd\scratchbox{\hss1\hss}}
\writestatus{co}{width=\the\wd\scratchbox}%

\stoptext

With --output=pdftex I have the log:
  (./try.tuo) (./try.tuo) (./try.tuo) (./try.tuo) (./try.tuo) (./try.tuo)
(./try.tuo) (./try.tuo) (./try.tuo) (./try.tuo) (./try.tuo) (./try.tuo)
(./try.tuo)
systems         : begin file try at line 1
(/usr/local/share/texmf-local/tex/context/base/pdfr-ec.tex)
co              : width=16.5333pt
co              : width=13.19997pt
systems         : end file try at line 15
  )

Should I update something else? texexec --version gives:

  TeXExec 5.4.3 - ConTeXt / PRAGMA ADE 1997-2005

                texexec : TeXExec 5.4.3 - ConTeXt / PRAGMA ADE 1997-2005
                texutil : TeXUtil 9.0.1 - ConTeXt / PRAGMA ADE 1992-2006
                    tex : pdfeTeX, 3.141592-1.21a-2.2 (Web2C 7.5.4)
                context : ver: 2006.04.05 20:06
                cont-en : ver: 2006.04.05 20:06  fmt: 2006.4.5  mes: english

Regards,
BG

Re: Extending the black circled numbers

[nico]

On Wed, 05 Apr 2006 21:59:36 +0200, nico <nicolas.marsgui@libertysurf.fr>  
wrote:

> On Wed, 05 Apr 2006 09:42:51 +0200, Hans Hagen <pragma@wxs.nl> wrote:
>
>>>>> But there's something strange: the first circle is greater than the
>>>>> others
>>>>> (but the numbers have all the same size). Tracing a bit I see that  
>>>>> the
>>>>> first circle has a width=16.5333pt, the others 13.19997pt. What's the
>>>>> reason for this?
>>>>>
>>>> what os the exact code that you use?how many mp runs do yuo have?
>>>
>>> It's exactly the one you gave. I attach the file I compile. Two
>>> mpruns; I attach the log too.
>> one run here .. can you try the beta? i remember a spurious space
>> problem someplace

Well, here is an even smaller test that shows the problem:

\starttext

\setbox0\hbox{\ss 99}
\writestatus{co}{width=\the\wd0}%

\setbox0\hbox{\ss 99}
\writestatus{co}{width=\the\wd0}%

\stoptext

It seems to be related to some font loading stuff, since when I don't put  
\ss I haven't this. So, if I put the following in the test I have no more  
the problem.

\setbox\scratchbox\hbox{\ss 99} % workaround to fix the strange size  
initialization...

\starttext
   \dontleavehmode \dorecurse{99}{\conum{\recurselevel}, }
\stoptext

Regards,
BG

Re: Extending the black circled numbers

[Hans Hagen]

nico wrote:
> On Wed, 05 Apr 2006 21:59:36 +0200, nico <nicolas.marsgui@libertysurf.fr>  
> wrote:
>
>   
>> On Wed, 05 Apr 2006 09:42:51 +0200, Hans Hagen <pragma@wxs.nl> wrote:
>>
>>     
>>>>>> But there's something strange: the first circle is greater than the
>>>>>> others
>>>>>> (but the numbers have all the same size). Tracing a bit I see that  
>>>>>> the
>>>>>> first circle has a width=16.5333pt, the others 13.19997pt. What's the
>>>>>> reason for this?
>>>>>>
>>>>>>             
>>>>> what os the exact code that you use?how many mp runs do yuo have?
>>>>>           
>>>> It's exactly the one you gave. I attach the file I compile. Two
>>>> mpruns; I attach the log too.
>>>>         
>>> one run here .. can you try the beta? i remember a spurious space
>>> problem someplace
>>>       
>
> Well, here is an even smaller test that shows the problem:
>
> \starttext
>
> \setbox0\hbox{\ss 99}
> \writestatus{co}{width=\the\wd0}%
>
> \setbox0\hbox{\ss 99}
> \writestatus{co}{width=\the\wd0}%
>
> \stoptext
>   
actually that file faile here because of a bug in pdftex that i ran into earlier todat (no text on the page, so an empty document, but an incomplete object being flushed) 

Hans 

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

Re: Extending the black circled numbers

[Hans Hagen]

nico wrote:
> It seems to be related to some font loading stuff, since when I don't put  
> \ss I haven't this. So, if I put the following in the test I have no more  
> the problem.
>   
strange, here it shows twice the same size 

\starttext
{\tracingall\setbox0\hbox{\ss 99}\the\wd0}
\stoptext 

may give some info where a blank space (or so) creeps in

Hans 


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

Re: Extending the black circled numbers

[nico]

On Wed, 05 Apr 2006 22:52:33 +0200, Hans Hagen <pragma@wxs.nl> wrote:

> nico wrote:
>> It seems to be related to some font loading stuff, since when I don't  
>> put
>> \ss I haven't this. So, if I put the following in the test I have no  
>> more
>> the problem.
>>
> strange, here it shows twice the same size
>
> \starttext
> {\tracingall\setbox0\hbox{\ss 99}\the\wd0}
> \stoptext
>
> may give some info where a blank space (or so) creeps in

Ok, you don't need to waste your time with this minor thing (that you  
cannot reproduce). Within the long verbose log there is:

{into \box0=
\hbox(8.333+0.0)x15.66658 []}
{vertical mode: \setbox}
{entering hbox group (level 2) at line 2}

In fact a second setbox after gives:

{leaving hbox group (level 2) entered at line 2}
{changing \box0=
\hbox(8.333+0.0)x15.66658 []}
{into \box0=
\hbox(8.333+0.0)x11.74997 []}
{vertical mode: end-group character }}

If you are still interested I can send you the full bzipped log (15KB),  
but you can stay at this step since I've an easy workaround. Thanks for  
your patience.

Regards,
BG

Re: Extending the black circled numbers

[nico]

On Wed, 05 Apr 2006 22:52:33 +0200, Hans Hagen <pragma@wxs.nl> wrote:

> nico wrote:
>> It seems to be related to some font loading stuff, since when I don't  
>> put
>> \ss I haven't this. So, if I put the following in the test I have no  
>> more
>> the problem.
>>
> strange, here it shows twice the same size
>
> \starttext
> {\tracingall\setbox0\hbox{\ss 99}\the\wd0}
> \stoptext
>
> may give some info where a blank space (or so) creeps in

Looking at the log, I've found blank spaces after "\pdfobj reserveobjnum"  
in enco-pfr.tex. Removing them makes the file compile ok (the bubbles are  
all the same :-).

\def\dodoincludepdffontresource
   {% does this font has an encoding specified vector
    \doifsomething\currentencoding % no \ifx
      {% is there a pdf font encoding resource file defined
       \ifcsname\pdffontresource\endcsname
         % (fake) object defined
       \else\ifcsname\pdffontfileresource\endcsname
         % is there a resource already included
         \doifsomething\pdffontfileresource
% -->     {\pdfobj reserveobjnum {}% <-- blank space
           {\pdfobj reserveobjnum{}%
            \setxvalue\pdffontresource{\the\pdflastobj}%
            \flushatshipout{\dododoincludepdffontresource{\currentencoding}}}%
%            \doglobal\appendetoks
%              \noexpand\dododoincludepdffontresource{\currentencoding}%
%            \to \everybeforeshipout}% prevent multiple loading
       \fi\fi
       \ifcsname\pdffontresource\endcsname
         \expanded{\pdffontattr\font{/ToUnicode  
\csname\pdffontresource\endcsname\space0 R}}%
         % do it only once for each font
         \letgvalue{\s!ucmap\fontfile}\empty
       \fi}}
...
\def\dodoincludepdffontresource
   {\doifsomething\currentencoding % no \ifx
      {\expandafter\ifx\csname\pdffontresource\endcsname\relax
         \expandafter\ifx\csname\pdffontfileresource\endcsname\relax\else
           \doifsomething\pdffontfileresource
% -->       {\pdfobj reserveobjnum {}% <-- blank space
             {\pdfobj reserveobjnum{}%
              \setxvalue\pdffontresource{\the\pdflastobj}%
              \flushatshipout{\dododoincludepdffontresource{\currentencoding}}}%
%              \doglobal\appendetoks
%                \noexpand\dododoincludepdffontresource{\currentencoding}%
%              \to \everybeforeshipout}% prevent multiple loading
         \fi
       \fi
       \expandafter\ifx\csname\pdffontresource\endcsname\relax\else
         \expanded{\pdffontattr\font{/ToUnicode  
\csname\pdffontresource\endcsname\space0 R}}%
         % do it only once for each font
         \letgvalue{\s!ucmap\fontfile}\empty
       \fi}}

Regards,
BG

Re: Extending the black circled numbers

[Hans Hagen]

nico wrote:
> On Wed, 05 Apr 2006 22:52:33 +0200, Hans Hagen <pragma@wxs.nl> wrote:
>
>   
>> nico wrote:
>>     
>>> It seems to be related to some font loading stuff, since when I don't  
>>> put
>>> \ss I haven't this. So, if I put the following in the test I have no  
>>> more
>>> the problem.
>>>
>>>       
>> strange, here it shows twice the same size
>>
>> \starttext
>> {\tracingall\setbox0\hbox{\ss 99}\the\wd0}
>> \stoptext
>>
>> may give some info where a blank space (or so) creeps in
>>     
>
> Looking at the log, I've found blank spaces after "\pdfobj reserveobjnum"  
> in enco-pfr.tex. Removing them makes the file compile ok (the bubbles are  
> all the same :-).
>   
indeed ... that code has been 'adapted' to the latest pdftex recently; 

clever deduction, once you can read such logs, you're an expert 

Hans 

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