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%D \module
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%D   [       file=font-mat,
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%D        version=2011.01.13, % (copied fron font-ini)
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%D          title=\CONTEXT\ Font Macros,
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%D       subtitle=Math,
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%D         author=Hans Hagen,
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%D           date=\currentdate,
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%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
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%C
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%C This module is part of the \CONTEXT\ macro||package and is
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%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
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%C details.
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\writestatus
{
loading
}{
ConTeXt
 
Font
 
Macros
 
/
 
Math
}
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\unprotect
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%D Be nice:
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\ifdefined
\??fontinstanceready
 
\else
 
\installcorenamespace
{
fontinstanceready
}
 
\fi
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\ifdefined
\??fontinstancebasic
 
\else
 
\installcorenamespace
{
fontinstancebasic
}
 
\fi
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\ifdefined
\??fontinstanceclass
 
\else
 
\installcorenamespace
{
fontinstanceclass
}
 
\fi
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%D The order 3 2 1 of siuze matters: needed for math-fbk relative size storage!
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%D \macros
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%D   {textonly}
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%D
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%D Traditionally math has a big impact on font definitions, mainly because we need
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%D to define alphabet variants using families and fonts. This means that one can
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%D easily get 10 fonts loaded per math size. In \MKIV\ we use a different approach:
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%D one family which has either a virtual font made of traditional fonts, or an
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%D \OPENTYPE\ font that has it all.
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%D
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%D We currently use only one math family but in the future we might consider using a
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%D second one for bold math. For the moment we keep the \MKII\ method of using a
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%D token register for definitions but we already dropped the text and symbols ones
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%D since they now live in the same family.
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\newtoks
       
\t_font_math_strategies
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\newconditional
\c_font_synchronize_math_fonts
 
\settrue
\c_font_synchronize_math_fonts
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\unexpanded
\def
\font_helpers_synchronize_math
 
% math stuff in mmode
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{
\ifconditional
\c_font_synchronize_math_fonts
\the
\t_font_math_strategies
\fi
}
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\unexpanded
\def
\textonly
{
\setfalse
\c_font_synchronize_math_fonts
}
 
% document this
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%D The main math font definer. We have removed some optimized code simply because we
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%D now always have a fontclass. We could check for fontclass being default or empty
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%D and save a few tests but it does not help us when no math is defined.
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%D
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%D Because we want to keep mr=.. and mb=... settings (read: not break downward
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%D compatibility by enforcing mrlr etc) we need a bit more code that optimal.
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% todo: \c_font_fam_mr
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\let
\c_font_fam_mr
   
\zerocount
  
% math regular
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\let
\c_font_fam_mr_lr
\plusone
    
% math regular l2r
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\let
\c_font_fam_mr_rl
\plustwo
    
% math regular r2l
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\let
\c_font_fam_mb
   
\plusthree
  
% math bold
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\let
\c_font_fam_mb_lr
\plusfour
   
% math bold l2r
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\let
\c_font_fam_mb_rl
\plusfive
   
% math bold r2l
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\definesystemattribute
[
mathfamily
][
public
]
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\newconditional
\c_font_bidirectional_mathstrategy
  
% can be default, not that much overhead: \settrue\c_font_bidirectional_mathstrategy
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\newconditional
\c_font_complete_bold_mathstrategy
  
\settrue
\c_font_complete_bold_mathstrategy
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\def
\mathtextsuffix
        
{
-
text
}
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\def
\mathscriptsuffix
      
{
-
script
}
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\def
\mathscriptscriptsuffix
{
-
scriptscript
}
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\def
\mathsizesuffix
{
\ifcase
\fontface
\or
\mathtextsuffix
\or
\mathscriptsuffix
\or
\mathscriptscriptsuffix
\fi
}
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%D Beware: truefontname also does a fallback on defaultfontclass so there
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%D can be some interference here, which is why we use a different method
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%D for bold.
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\def
\font_helpers_set_math_family_a
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{
\ifcsname
\??fontinstanceready
\fontclass
       
-
\fontbody
-
\s!mm
-
\fontfamily
-
\fontsize
\endcsname
 
\setfalse
\c_font_auto_size
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\lastnamedcs
 
\else
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\ifcsname
\??fontinstanceready
\fontclass
       
-
\fontbody
-
\s!mm
-
\fontfamily
          
\endcsname
 
\settrue
 
\c_font_auto_size
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\lastnamedcs
 
\else
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\font_helpers_set_math_family_b
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\fi\fi
}
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\def
\font_helpers_set_math_family_b
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{
\ifcsname
\??fontinstanceready
\defaultfontclass
-
\fontbody
-
\s!mm
-
\fontfamily
-
\fontsize
\endcsname
 
\setfalse
\c_font_auto_size
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\lastnamedcs
 
\else
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\ifcsname
\??fontinstanceready
\defaultfontclass
-
\fontbody
-
\s!mm
-
\fontfamily
          
\endcsname
 
\settrue
 
\c_font_auto_size
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\lastnamedcs
 
\else
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\font_helpers_set_math_family_c
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\fi\fi
}
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\def
\font_helpers_set_math_family_c
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{
\ifcsname
\??fontinstanceready
                  
\fontbody
-
\s!mm
-
\fontfamily
-
\fontsize
\endcsname
 
\setfalse
\c_font_auto_size
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\lastnamedcs
 
\else
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\ifcsname
\??fontinstanceready
                  
\fontbody
-
\s!mm
-
\fontfamily
          
\endcsname
 
\settrue
 
\c_font_auto_size
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\lastnamedcs
 
\else
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\settrue
 
\c_font_auto_size
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\fi\fi
}
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\let
\mathsizesuffix\empty
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\def
\font_helpers_set_math_family_indeed
#
mrtag
#
family
% \fontface etc are also used later on
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{
\let
\savedfontbody
\fontbody
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\let
\fontfamily
#
family
%
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% the order is important as we depend on known id's when completing fonts
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% enabling is needed when we have fallbacks which spoils the families
   
\let
\mathsizesuffix
\mathscriptscriptsuffix
\let
\fontface
\!!plusthree
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\font_helpers_set_math_family_a
\scriptscriptfont
#
mrtag
\font
 
% defines
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\font_helpers_set_math_family_a
\scriptscriptfont
#
mrtag
\font
 
% enables
   
\let
\mathsizesuffix
\mathscriptsuffix
      
\let
\fontface
\!!plustwo
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\font_helpers_set_math_family_a
\scriptfont
      
#
mrtag
\font
 
% defines
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\font_helpers_set_math_family_a
\scriptfont
      
#
mrtag
\font
 
% enables
   
\let
\mathsizesuffix
\mathtextsuffix
        
\let
\fontface
\!!plusone
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\font_helpers_set_math_family_a
\textfont
        
#
mrtag
\font
 
% defines
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\font_helpers_set_math_family_a
\textfont
        
#
mrtag
\font
 
% enables
   
\let
\mathsizesuffix\empty
                 
\let
\fontface
\!!zerocount
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\let
\fontbody
\savedfontbody
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\setfalse
\c_font_auto_size
}
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\def
\font_helpers_set_math_family_bold_a
#
font
#
mbfam
#
mrfam
%
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{
\ifcsname
\??fontinstanceready
\fontclass
-
\fontbody
-
\s!mm
-
\fontfamily
-
\fontsize
\endcsname
 
\setfalse
\c_font_auto_size
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\lastnamedcs
 
#
font
#
mbfam
\font
 
\else
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\ifcsname
\??fontinstanceready
\fontclass
-
\fontbody
-
\s!mm
-
\fontfamily
          
\endcsname
 
\settrue
 
\c_font_auto_size
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\lastnamedcs
 
#
font
#
mbfam
\font
 
\else
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#
font
#
mbfam
#
font
#
mrfam
%
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\fi\fi
}
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\def
\font_helpers_set_math_family_bold_indeed
#
mbfam
#
familytag
#
mrfam
% \c_font_fam_mb \s!mb \c_font_fam_mr
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{
\let
\savedfontclass
\defaultfontclass
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\let
\defaultfontclass
\fontclass
 
% else truefontname falls back on the wrong one
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\let
\savedfontbody
\fontbody
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\let
\fontfamily
#
familytag
%
   
\let
\mathsizesuffix
\mathscriptscriptsuffix
\let
\fontface
\!!plusthree
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\font_helpers_set_math_family_bold_a
\scriptscriptfont
#
mbfam
#
mrfam
% defines
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\font_helpers_set_math_family_bold_a
\scriptscriptfont
#
mbfam
#
mrfam
% enables
   
\let
\mathsizesuffix
\mathscriptsuffix
      
\let
\fontface
\!!plustwo
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\font_helpers_set_math_family_bold_a
\scriptfont
      
#
mbfam
#
mrfam
% defines
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\font_helpers_set_math_family_bold_a
\scriptfont
      
#
mbfam
#
mrfam
% enables
   
\let
\mathsizesuffix
\mathtextsuffix
        
\let
\fontface
\!!plusone
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\font_helpers_set_math_family_bold_a
\textfont
        
#
mbfam
#
mrfam
% defines
145   
\font_helpers_set_math_family_bold_a
\textfont
        
#
mbfam
#
mrfam
% enables
   
\let
\mathsizesuffix\empty
                 
\let
\fontface
\!!zerocount
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\let
\fontbody
\savedfontbody
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\let
\defaultfontclass
\savedfontclass
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\setfalse
\c_font_auto_size
}
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% optimized: math fonts are never changed (10K \bfa $x$: 3.2 => 2.5 (baseline 1.0))
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%
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% sort of tricky: we cannot reset in \everybeforedefinetypeface as we don't know
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% all sizes so we postpone the optimization to the first starttext
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%
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% pitfall: we should reset 'm when a fontclass name is reused
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\newconditional
\optimizemathfontdefinitions
 
\settrue
\optimizemathfontdefinitions
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\def
\font_helpers_set_math_family
#
mrfam
#
familytag
%
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{
\ifconditional
\optimizemathfontdefinitions
162     
\ifcsname
\??fontinstanceclass
\fontclass
-
\fontbody
-
\s!mm
-
#
familytag
-
\fontsize
-
1
\endcsname
163       
% \writestatus{fonts}{math: reusing \fontclass\fontbody\s!mm#familytag\fontsize1}%
164       
\font_helpers_preset_math_family_indeed
#
mrfam
#
familytag
%
165     
\else
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% \writestatus{fonts}{math: defining \fontclass\fontbody\s!mm#familytag\fontsize1}%
167       
\font_helpers_set_math_family_indeed
#
mrfam
#
familytag
%
168     
\fi
169   
\else
170     
\font_helpers_set_math_family_indeed
#
mrfam
#
familytag
%
171   
\fi
}
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\def
\font_helpers_set_math_family_bold
#
mbfam
#
familytag
#
mrfam
%
174  
{
\ifconditional
\optimizemathfontdefinitions
175    
%\ifcsname\??fontinstanceclass\fontclass-\textface-\s!mm-#familytag-\fontsize-1\endcsname
176     
\ifcsname
\??fontinstanceclass
\fontclass
-
\fontbody
-
\s!mm
-
#
familytag
-
\fontsize
-
1
\endcsname
177       
\font_helpers_preset_math_family_indeed
#
mbfam
#
familytag
%
178     
\else
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\font_helpers_set_math_family_bold_indeed
#
mbfam
#
familytag
#
mrfam
%
180     
\fi
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\else
182     
\font_helpers_set_math_family_bold_indeed
#
mbfam
#
familytag
#
mrfam
%
183   
\fi
}
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%D It can happen that we use a bodyfont with no math in which case we have a problem
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%D with setting the global bodyfont size in the page builder. For instance in:
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%D
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%D \starttext
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%D     \definetypeface[test][rm][serif][pagella][default]
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%D     \setupbodyfont[test]
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%D     test
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%D \stoptext
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%D
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%D This is why we need the check. At the cost of some extra checking we gain a
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%D little in restoring global states and, what's more important, we get rid of large
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%D math parameter push/pop in tracingall when not needed.
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\def
\font_helpers_preset_math_family_indeed
#
fam
#
familytag
%
199  
{
\expandafter\let\expandafter
\v_font_math_one
\csname
\??fontinstanceclass
\fontclass
-
\fontbody
-
\s!mm
-
#
familytag
-
\fontsize
-
1
\endcsname
200   
\ifx
\v_font_math_one
\relax
201     
\font_helpers_preset_math_family_warning
202   
\else\ifnum\fontid\textfont
#
fam
=
\fontid
\v_font_math_one
\else
203     
\font_helpers_preset_math_family_indeed_changed
#
fam
#
familytag
%
204   
\fi\fi
}
205
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\def
\font_helpers_preset_math_family_warning
207  
{
\writestatus
{
fonts
}{
math
:
 
unset
 
for
 
global
 
bodyfont
 
\fontclass\space
 
at
 
\fontbody
}}
208
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\def
\font_helpers_preset_math_family_indeed_changed
#
fam
#
familytag
%
210  
{
\scriptscriptfont
#
fam
\csname
\??fontinstanceclass
\fontclass
-
\fontbody
-
\s!mm
-
#
familytag
-
\fontsize
-
3
\endcsname
211   
\scriptfont
      
#
fam
\csname
\??fontinstanceclass
\fontclass
-
\fontbody
-
\s!mm
-
#
familytag
-
\fontsize
-
2
\endcsname
212   
\textfont
        
#
fam
\v_font_math_one
}
213
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\let
\font_helpers_reset_fontclass_math_families
\gobbleoneargument
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%D It would be nice if characters could be defined in a neutral way (say fam 255)
217
%D and be mapped to a real family during noad list construction. However, this
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%D changes tex in critical places so for the moment we simulate this using
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%D manipulation.
220
%D
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%D For tracing purposes we use three families but in l2r mode 1 and 2 are copies of
222
%D 0 while in rl mode 0 is a copy of 1. There is no real overhead involved in this.
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%D This also permits different font definitions for normal and mixed.
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\let
\m_font_class_direction
\empty
226
\let
\m_font_class_features
 
\empty
227
\let
\m_font_class_fallbacks
\empty
228
\let
\m_font_class_goodies
  
\empty
229
230
\let
\m_font_direction
\empty
231
\let
\m_font_features
 
\empty
232
\let
\m_font_fallbacks
\empty
233
\let
\m_font_goodies
  
\empty
234
235
\appendtoks
 
% can be analyzed once
236    
% why here ..
237   
%\edef\m_font_class_direction{\ifcsname\??fontclass\fontclass\s!mm\s!direction\endcsname\csname\??fontclass\fontclass\s!mm\s!direction\endcsname\fi}%
238    
\edef
\m_font_class_direction
{
\begincsname
\??fontclass
\fontclass
\s!mm\s!direction
\endcsname
}
%
239    
% ...
240    
\ifx
\m_font_class_direction
\v!both
241      
\settrue
\c_font_bidirectional_mathstrategy
242    
\else
243      
\setfalse
\c_font_bidirectional_mathstrategy
244    
\fi
245
\to
 
\t_font_math_strategies
246
247
\def
\font_helpers_bidirectional_mathstrategy_yes
248  
{
\font_helpers_set_math_family
\c_font_fam_mr_lr
\s!mrlr
249   
\font_helpers_set_math_family
\c_font_fam_mr_rl
\s!mrrl
250   
\ifnum
\fontid\textfont
\c_font_fam_mr
=
\fontid\textfont
\c_font_fam_mr_lr
\else
251     
\font_helpers_bidirectional_mathstrategy_yes_changed
252   
\fi
}
253
254
\def
\font_helpers_bidirectional_mathstrategy_yes_changed
255  
{
\textfont
        
\c_font_fam_mr
\textfont
        
\c_font_fam_mr_lr
256   
\scriptfont
      
\c_font_fam_mr
\scriptfont
      
\c_font_fam_mr_lr
257   
\scriptscriptfont
\c_font_fam_mr
\scriptscriptfont
\c_font_fam_mr_lr
}
258
259
\def
\font_helpers_bidirectional_mathstrategy_nop
260  
{
\font_helpers_set_math_family
\c_font_fam_mr
\s!mr
261   
\ifnum
\fontid\textfont
\c_font_fam_mr_rl
=
\fontid\textfont
\c_font_fam_mr
\else
262     
\font_helpers_bidirectional_mathstrategy_nop_changed
263   
\fi
}
264
265
\def
\font_helpers_bidirectional_mathstrategy_nop_changed
266  
{
\textfont
        
\c_font_fam_mr_lr
\textfont
        
\c_font_fam_mr
267   
\scriptfont
      
\c_font_fam_mr_lr
\scriptfont
      
\c_font_fam_mr
268   
\scriptscriptfont
\c_font_fam_mr_lr
\scriptscriptfont
\c_font_fam_mr
269   
\textfont
        
\c_font_fam_mr_rl
\textfont
        
\c_font_fam_mr
270   
\scriptfont
      
\c_font_fam_mr_rl
\scriptfont
      
\c_font_fam_mr
271   
\scriptscriptfont
\c_font_fam_mr_rl
\scriptscriptfont
\c_font_fam_mr
}
272
273
\appendtoks
274    
\ifconditional
\c_font_bidirectional_mathstrategy
275      
\font_helpers_bidirectional_mathstrategy_yes
276    
\else
277      
\font_helpers_bidirectional_mathstrategy_nop
278    
\fi
279
\to
 
\t_font_math_strategies
280
281
\def
\font_helpers_complete_bold_mathstrategy_yes_bidi
282  
{
\font_helpers_set_math_family_bold
\c_font_fam_mb_lr
\s!mblr
\c_font_fam_mr_lr
283   
\font_helpers_set_math_family_bold
\c_font_fam_mb_rl
\s!mbrl
\c_font_fam_mr_rl
284   
\ifnum
\fontid\textfont
\c_font_fam_mb
=
\fontid\textfont
\c_font_fam_mb_lr
\else
285     
\font_helpers_complete_bold_mathstrategy_yes_bidi_changed
286   
\fi
}
287
288
\def
\font_helpers_complete_bold_mathstrategy_yes_bidi_changed
289  
{
\textfont
        
\c_font_fam_mb
\textfont
        
\c_font_fam_mb_lr
290   
\scriptfont
      
\c_font_fam_mb
\scriptfont
      
\c_font_fam_mb_lr
291   
\scriptscriptfont
\c_font_fam_mb
\scriptscriptfont
\c_font_fam_mb_lr
}
292
293
\def
\font_helpers_complete_bold_mathstrategy_yes
294  
{
\font_helpers_set_math_family_bold
\c_font_fam_mb
\s!mb
\c_font_fam_mr
\relax
295   
\ifnum
\fontid\textfont
\c_font_fam_mb_rl
=
\fontid\textfont
\c_font_fam_mb
\else
296     
\font_helpers_complete_bold_mathstrategy_yes_changed
297   
\fi
}
298
299
\def
\font_helpers_complete_bold_mathstrategy_yes_changed
300  
{
\textfont
        
\c_font_fam_mb_rl
\textfont
        
\c_font_fam_mb
301   
\scriptfont
      
\c_font_fam_mb_rl
\scriptfont
      
\c_font_fam_mb
302   
\scriptscriptfont
\c_font_fam_mb_rl
\scriptscriptfont
\c_font_fam_mb
303   
\textfont
        
\c_font_fam_mb_lr
\textfont
        
\c_font_fam_mb
304   
\scriptfont
      
\c_font_fam_mb_lr
\scriptfont
      
\c_font_fam_mb
305   
\scriptscriptfont
\c_font_fam_mb_lr
\scriptscriptfont
\c_font_fam_mb
}
306
307
\def
\font_helpers_complete_bold_mathstrategy_nop
308  
{
\ifnum
\fontid\textfont
\c_font_fam_mb
=
\fontid\textfont
\c_font_fam_mr
\else
309     
\font_helpers_complete_bold_mathstrategy_nop_changed
310   
\fi
}
311
312
\def
\font_helpers_complete_bold_mathstrategy_nop_changed
313  
{
\textfont
        
\c_font_fam_mb
   
\textfont
        
\c_font_fam_mr
314   
\scriptfont
      
\c_font_fam_mb
   
\scriptfont
      
\c_font_fam_mr
315   
\scriptscriptfont
\c_font_fam_mb
   
\scriptscriptfont
\c_font_fam_mr
316   
\textfont
        
\c_font_fam_mb_lr
\textfont
        
\c_font_fam_mr_lr
317   
\scriptfont
      
\c_font_fam_mb_lr
\scriptfont
      
\c_font_fam_mr_lr
318   
\scriptscriptfont
\c_font_fam_mb_lr
\scriptscriptfont
\c_font_fam_mr_lr
319   
\textfont
        
\c_font_fam_mb_rl
\textfont
        
\c_font_fam_mr_rl
320   
\scriptfont
      
\c_font_fam_mb_rl
\scriptfont
      
\c_font_fam_mr_rl
321   
\scriptscriptfont
\c_font_fam_mb_rl
\scriptscriptfont
\c_font_fam_mr_rl
}
322
323
\def
\font_helpers_apply_complete_bold_mathstrategy
324  
{
\ifconditional
\c_font_complete_bold_mathstrategy
325     
\ifconditional
\c_font_bidirectional_mathstrategy
326       
\font_helpers_complete_bold_mathstrategy_yes_bidi
327     
\else
328       
\font_helpers_complete_bold_mathstrategy_yes
329     
\fi
330   
\else
331     
\font_helpers_complete_bold_mathstrategy_nop
332   
\fi
}
333
334
\appendtoks
335    
\font_helpers_apply_complete_bold_mathstrategy
336
\to
 
\t_font_math_strategies
337
338
\ifdefined
\defaultmathfamily
 
\else
339    
\setnewconstant
\defaultmathfamily
\zerocount
340
\fi
341
342
\appendtoks
343    
\fam
\defaultmathfamily
 
% all characters and symbols are in this family
344
\to
 
\everymathematics
345
346
\unexpanded
\def
\font_helpers_synchronize_math_family_mr
347  
{
\c_attr_mathfamily
\ifconditional
\c_font_bidirectional_mathstrategy
348     
\ifconditional
\c_math_right_to_left
349       
\plustwo
350     
\else
351       
\plusone
352     
\fi
353   
\else
354     
\zerocount
355   
\fi
}
356
357
\unexpanded
\def
\font_helpers_synchronize_math_family_mb
358  
{
\c_attr_mathfamily
\ifconditional
\c_font_bidirectional_mathstrategy
359     
\ifconditional
\c_math_right_to_left
360       
\ifconditional
\c_font_pseudo_bold_math_state
\pluseight
\else
\plusfive
\fi
361     
\else
362       
\ifconditional
\c_font_pseudo_bold_math_state
\plusseven
\else
\plusfour
\fi
363     
\fi
364   
\else
365     
\ifconditional
\c_font_pseudo_bold_math_state
\plussix
\else
\plusthree
\fi
366   
\fi
}
367
368
\installcorenamespace
{
fontmathsynchronizer
}
369
\installcorenamespace
{
fontmathstoredstrategy
}
370
371
\letvalue
{
\??fontmathsynchronizer\s!tf
 
}
\font_helpers_synchronize_math_family_mr
372
\letvalue
{
\??fontmathsynchronizer\s!sl
 
}
\font_helpers_synchronize_math_family_mr
373
\letvalue
{
\??fontmathsynchronizer\s!it
 
}
\font_helpers_synchronize_math_family_mr
374
\letvalue
{
\??fontmathsynchronizer\s!bf
 
}
\font_helpers_synchronize_math_family_mb
375
\letvalue
{
\??fontmathsynchronizer\s!bs
 
}
\font_helpers_synchronize_math_family_mb
376
\letvalue
{
\??fontmathsynchronizer\s!bi
 
}
\font_helpers_synchronize_math_family_mb
377
\letvalue
{
\??fontmathsynchronizer
\empty
}
\font_helpers_synchronize_math_family_mr
378
379
% \def\font_helpers_synchronize_math_family
380
%   {\csname\??fontmathsynchronizer\ifcsname\??fontmathsynchronizer\fontalternative\endcsname\fontalternative\fi\endcsname}
381
382
\def
\font_helpers_synchronize_math_family
383  
{
\ifcsname
\??fontmathsynchronizer
\fontalternative
\endcsname
384     
\lastnamedcs
385   
\else
386     
\font_helpers_synchronize_math_family_mr
387   
\fi
}
388
389
\ifdefined
 
\fontid
 
% we need to keep this test for a while
390    
\appendtoks
391        
\ifnum
\fontid\textfont
\zerocount
=
\fontid\textfont
\plusthree
392            
\letvalue
{
\??fontmathstoredstrategy
\fontclass
}
\font_helpers_set_math_partial_bold_strategy
393        
\else
394            
\letvalue
{
\??fontmathstoredstrategy
\fontclass
}
\font_helpers_set_math_full_bold_strategy
395        
\fi
396    
\to
 
\t_font_math_strategies
397
\else
398    
\appendtoks
399        
\edef
\currentmathfontmr
{
\fontname\textfont
\zerocount
}
%
400        
\edef
\currentmathfontmb
{
\fontname\textfont
\plusthree
}
%
401        
\ifx
\currentmathfontmr
\currentmathfontmb
402            
\letvalue
{
\??fontmathstoredstrategy
\fontclass
}
\font_helpers_set_math_partial_bold_strategy
403        
\else
404            
\letvalue
{
\??fontmathstoredstrategy
\fontclass
}
\font_helpers_set_math_full_bold_strategy
405        
\fi
406    
\to
 
\t_font_math_strategies
407
\fi
408
409
%def\font_helpers_synchronize_math_bold_strategy{\csname\??fontmathstoredstrategy\fontclass\endcsname}
410
\def
\font_helpers_synchronize_math_bold_strategy
{
\begincsname
\??fontmathstoredstrategy
\fontclass
\endcsname
}
411
412
\newconditional
\c_font_pseudo_bold_math_state
413
414
\def
\font_helpers_set_math_partial_bold_strategy
{
\settrue
 
\c_font_pseudo_bold_math_state
}
415
\def
\font_helpers_set_math_full_bold_strategy
   
{
\setfalse
\c_font_pseudo_bold_math_state
}
416
417
\appendtoks
418    
\font_helpers_synchronize_math_bold_strategy
419
\to
 
\everymathematics
420
421
%D Bold is somewhat special as we might want both full-bold-math mixed regular-math,
422
%D as well as automatic adaption to outer bold (in titles and inline text bold) so
423
%D we will need explicit switches as well as an automatic one. (We will use lucida
424
%D as an example.)
425
426
\ifdefined
\mathdefault
 
\else
 
\let
\mathdefault
\relax
 
\fi
427
428
\newconditional
\c_math_bold
429
430
\unexpanded
\def
\mr
 
% math regular
431  
{
\ifmmode
432     
\font_helpers_synchronize_math_family_mr
433   
\else
434     
\font_helpers_set_current_font_alternative
\s!mr
435   
\fi
436   
\mathdefault
437   
\setfalse
\c_math_bold
}
438
439
\unexpanded
\def
\mb
 
% math bold
440  
{
\ifmmode
441     
\font_helpers_synchronize_math_family_mb
442   
\else
443     
\font_helpers_set_current_font_alternative
\s!mb
444   
\fi
445   
\mathdefault
446   
\settrue
\c_math_bold
}
447
448
\appendtoks
449    
\font_helpers_synchronize_math_family
 
% auto bold
450
\to
 
\everymathematics
451
452
\appendtoks
453    
\ifconditional
\c_math_bold
\mb
\fi
454
\to
 
\everymathematics
455
456
%D \macros
457
%D   {bigmath,nobigmath}
458
%D
459
%D We can inhibit this slow||downer with:
460
461
% these can best be combined
462
463
% 0=never 1=everymath 2=always
464
465
\setnewconstant
\synchronizebigmathflag
\plusone
466
467
\appendtoks
468  
\ifcase
\synchronizebigmathflag
469    
% never
470  
\or
471    
\synchronizebigmath
472  
\or
473    
% always
474  
\fi
475
\to
 
\everymathematics
476
477
\unexpanded
\def
\nobigmath
  
{
\synchronizebigmathflag
\zerocount
}
478
\unexpanded
\def
\autobigmath
{
\synchronizebigmathflag
\plusone
\synchronizebigmath
}
479
\unexpanded
\def
\bigmath
    
{
\synchronizebigmathflag
\plustwo
\synchronizebigmath
}
480
481
\let
\bigmathfontsize
\empty
482
483
\unexpanded
\def
\synchronizebigmath
484  
{
\ifx
\bigmathfontsize
\fontsize
485     
% already in sync
486   
\else
487     
\let
\bigmathfontsize
\fontsize
488     
\font_helpers_synchronize_math
489   
\fi
}
490
491
\unexpanded
\def
\font_helpers_check_big_math_synchronization
492  
{
\ifcase
\synchronizebigmathflag
493     
% never
494   
\or
495     
\ifmmode
 
\synchronizebigmath
 
\fi
496   
\or
497     
\synchronizebigmath
498   
\fi
}
499
500
\protect
 
\endinput
501