Re: [NTG-context] Whacko font behaviour ? ( Or Am I ? :O)

14 Jul 2008


      Am 14.07.2008 um 21:22 schrieb Alan Stone:
...
ConTeXt  ver: 2008.07.10 08:40 MKIV  fmt: 2008.7.10  int: english/ 
english
See test.tex in attachement.
The following combinations give the following results after  
compiling with
texmfstart texexec --lua test.tex
-------------------------------------------------------------------------------
(1) \definefont[myChapterFont][myHeadingsFont sa 1.728]  % with
You could either use a real font name like 'Arial' or a symbolic name
defined with \definefontsynonym like 'Serif', 'SerifBold', 'Sans',
'Dummy-Regular' etc. in the second argument of \definefont but not
the name for a font collection defined with \definetype, in your case

\definefont[myChapterFont][Sans sa 1.728]

or

\definefont[myChapterFont][DummyRegular sa 1.728]
...
\setuphead[chapter][style=myChapterFont] % or
\setuphead[chapter][style=\myChapterFont] % or
\setuphead[chapter][style={\myChapterFont}]
generates the following compile error...
! Font \**myChapterFont**:=myHeadingsFont at 20.736pt not loadable:  
metric data not found or bad.
<to be read again>
                  \relax
\dododefinefont ...ontspec {#2}\rawfontidentifier
                                                 \let  
\localrelativefontsiz...
\dosetfontattribute ...me #1#2\@EA \endcsname \fi
                                                 \empty
\doplaceheadnumbertext ...bute {\??ko #1}\c!style
                                                 \getvalue {\??ko  
#1\c!comm...
\dodododoconstructhead ...{\finalsectionnumber }}}
                                                 \writesection {#1} 
{#3}{#4}...
l.54 \chapter{chapter test}
?
! Emergency stop.
<to be read again>
                  \relax
\dododefinefont ...ontspec {#2}\rawfontidentifier
                                                 \let  
\localrelativefontsiz...
\dosetfontattribute ...me #1#2\@EA \endcsname \fi
                                                 \empty
\doplaceheadnumbertext ...bute {\??ko #1}\c!style
                                                 \getvalue {\??ko  
#1\c!comm...
\dodododoconstructhead ...{\finalsectionnumber }}}
                                                 \writesection {#1} 
{#3}{#4}...
l.54 \chapter{chapter test}
!  ==> Fatal error occurred, no output PDF file produced!
-------------------------------------------------------------------------------
(2) \definefont[myChapterFont][Sans sa 1.728]  % with
\setuphead[chapter][style=myChapterFont] % or
\setuphead[chapter][style=\myChapterFont] % or
\setuphead[chapter][style={\myChapterFont}]
displays the chapter heading with a scaled LMSans10-Regular font
This did happen because Latin Modern Sans is the default sans serif  
font,
you have to define a typescript with the desired font as sans style or  
you
use a symbolic name for 'myChapterFont', in your case 'Dummy-Regular'.

\starttypescript [myBodyFont]
    \definetypeface [myBodyFont] [rm] [serif] [myBodyFont] [default]
    \definetypeface [myBodyFont] [ss] [sans] [myHeadingsFont] [default]
\stoptypescript

works with the definition from you because it use now Arial as sans  
font.
...
-------------------------------------------------------------------------------
(3) this displays the chapter heading font correctly
\setuphead[chapter][style={\tfc\myHeadingsFont}]
-------------------------------------------------------------------------------
(4) \setuphead[chapter][style={\tfc\Sans}]
generates the following compile error...
! Undefined control sequence.
\@@kochapterstyle ->\tfc \Sans
\doifdefinedelse #1->\edef \p!defined {#1
                                        }\ifcsname \detokenize \@EA  
{\p!def...
\doconvertfont #1->\doifdefinedelse {\@letter@ #1}
                                                  {\doifelsenothing  
{#1}\go...
\dosetfontattribute ...me #1#2\@EA \endcsname \fi
                                                 \empty
\doplaceheadnumbertext ...bute {\??ko #1}\c!style
                                                 \getvalue {\??ko  
#1\c!comm...
\dodododoconstructhead ...{\finalsectionnumber }}}
                                                 \writesection {#1} 
{#3}{#4}...
l.54 \chapter{chapter test}
?
! Emergency stop.
\@@kochapterstyle ->\tfc \Sans
\doifdefinedelse #1->\edef \p!defined {#1
                                        }\ifcsname \detokenize \@EA  
{\p!def...
\doconvertfont #1->\doifdefinedelse {\@letter@ #1}
                                                  {\doifelsenothing  
{#1}\go...
\dosetfontattribute ...me #1#2\@EA \endcsname \fi
                                                 \empty
\doplaceheadnumbertext ...bute {\??ko #1}\c!style
                                                 \getvalue {\??ko  
#1\c!comm...
\dodododoconstructhead ...{\finalsectionnumber }}}
                                                 \writesection {#1} 
{#3}{#4}...
l.54 \chapter{chapter test}
!  ==> Fatal error occurred, no output PDF file produced!
The correct definition is:

\setuphead[chapter][style={\tfc\ss}]


You should also read Aditya Mahajans about article about fonts:
http://wiki.contextgarden.net/Font_Switching
http://www.tug.org/TUGboat/Articles/tb28-2/tb89mahajan.pdf


Regards,
Wolfgang

Re: [NTG-context] Whacko font behaviour ? ( Or Am I ? :O)

Wolfgang Schuster