summaryrefslogtreecommitdiff
path: root/macros/luatex/optex/math-unicode.opm
blob: 9b4cf60acbcbc1a93195dd168c0b2ae48b17fbc1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
%% This is part of OpTeX project, see http://petr.olsak.net/optex

\_codedecl \loadmath {Unicode Math fonts <2020-02-14>}

\_newifi \_ifmathloading   \_mathloadingtrue

\_def\_noloadmath{\_mathloadingfalse}
\_def\_doloadmath{\_mathloadingtrue}

\_def\_loadmath#1{%
   \_ifmathloading
   \_initunifonts
   \_isfont"#1"\_iffalse
      \_opwarning{Math font "#1" not found, skipped...}%
   \_else
      \_def\_unimathfont{#1}%
      \_def\_normalmath{%
         \_loadumathfamily 1 {\_unimathfont}{} % Base font
         \_loadmathfamily  4 rsfs              % script
         \_setmathdimens
       }%
       \_let\_boldmath=\_normalmath
       \_addto\_boldmath{\_pdfliteral direct {2 Tr .3 w}\_aftergroup\_noboldmath}%
       \_def\_noboldmath{\_pdfliteral direct {0 Tr 0 w}}% faked bold only :-(
       \_normalmath
       \_wterm {MATH-FONT: "#1" -- unicode math prepared.}%
       \_setctable\_optexcatcodes \_input unimath-codes.opm \_restorectable 
       \_mathloadingfalse
   \_fi\_fi}

\_def\_loadboldmath#1#2\to #3{%
   \_def\_tmp{#3}\_ifx\_unimathfont\_tmp % do work only if #3 is loaded as normal Math
   \_isfont"#1"\_iffalse
      \_opwarning{Bold-Math font "#1" not found, skipped...}   
   \_else
      \_def\_unimathboldfont{#1}%
      \_def\_boldmath{%
          \_loadumathfamily 1 {\_unimathboldfont}{} % Base font
          \_loadmathfamily  4 rsfs                  % script
          \_setmathdimens
      }%
      \_wterm {MATH-FONT: "#1" -- unicode math bold prepared.}%
   \_fi\_fi}

\_def\_umathname#1#2{"#1:\_mfontfeatures#2"}
\_def\_mfontfeatures{mode=base;script=math;} 

\_def\_loadumathfamily #1 #2#3 {%
  \_edef\_optsizesave{\_the\_optsize}%
  \_optsize=\_sizemtext  \_font\_mF=\_umathname{#2}{#3} at\_optsize \_textfont#1=\_mF
  \_ifnum#1=1 \_textfont2=\_mF \_textfont3=\_mF \_fi
  \_optsize=\_sizemscript \_font\_mF=\_umathname{#2}{+ssty=0;#3} at\_optsize \_scriptfont#1=\_mF
  \_ifnum#1=1 \_scriptfont2=\_mF \_scriptfont3=\_mF \_fi
  \_optsize=\_sizemsscript \_font\_mF=\_umathname{#2}{+ssty=1;#3} at\_optsize \_scriptscriptfont#1=\_mF
  \_ifnum#1=1 \_scriptscriptfont2=\_mF \_scriptscriptfont3=\_mF \_fi  
  \_optsize=\_optsizesave \_relax
}

\_newcount\umathnumA  \_newcount\umathnumB

\def\umathcorr#1#2{\expandafter#1\expandafter{\the#2}}
\def\umathprepare#1{\def\umathscanholes##1[#1]##2##3\relax{##2}}
\def\umathvalue#1{\expandafter\umathscanholes\umathcharholes[#1]{#1}\relax}

\def\umathcharholes{% holes in math alphabets:
   [119893]{"210E}[119965]{"212C}[119968]{"2130}[119969]{"2131}%
   [119971]{"210B}[119972]{"2110}[119975]{"2112}[119976]{"2133}[119981]{"211B}%
   [119994]{"212F}[119996]{"210A}[120004]{"2134}%
   [120070]{"212D}[120075]{"210C}[120076]{"2111}[120085]{"211C}[120093]{"2128}%
   [120122]{"2102}[120127]{"210D}[120133]{"2115}[120135]{"2119}
   [120136]{"211A}[120137]{"211D}[120145]{"2124}%
}
\def\umathrange#1#2{\umathnumB=#2\relax \umathrangeA#1}
\def\umathrangeA#1-#2{\umathnumA=`#1\relax
   \loop
      \umathcorr\umathprepare\umathnumB
      \Umathcode \umathnumA = 7 1 \umathcorr\umathvalue{\umathnumB}
      \ifnum\umathnumA<`#2\relax
         \advance\umathnumA by1 \advance\umathnumB by1
   \repeat
}
\def\umathrangeGREEK{\begingroup
   \lccode`A="0391 \lccode`Z="03A9
   \lowercase{\endgroup\umathrange{A-Z}}}
\def\umathrangegreek{\begingroup
   \lccode`A="03B1 \lccode`Z="03D6
   \lowercase{\endgroup\umathrange{A-Z}}}
\def\greekdef#1{\ifx#1\relax \else
   \begingroup \lccode`X=\umathnumB \lowercase{\endgroup \def#1{X}}%
   \advance\umathnumB by 1
   \expandafter\greekdef \fi
}

\_public
   \loadmath \loadboldmath \noloadmath \doloadmath ;

\_endcode

--------------------------------------------

The `\loadmath` macro loads math fonts and sets math-codes using \input
unimath-codes.opm. If UnicodeMath font is loaded then `\_mathloadingfalse`
is set, so new UnicodeMath font isn't loaded until `\domathload` is used.

`\loadadboldmath{<bold-font>} \to {<normal-font>}` loads bold variant only
if <normal-font> was sucessully loaded. For example:

\begtt
\loadmath     {[xitsmath-regular]}
\loadboldmath {[xitsmath-bold]} \to {[xitsmath-regular]}
\endtt

You can combine more fonts, if you register them to another
math families (5, 6, 7, etc.) in \normalmath macro.

The default value of \normalmath shows a combination of base Unicode Math
font with 8bit Math font at family 4. See definition of \script macro where
\fam4 is used. Of course, we need to set \rmvariables too, because 8bit font
accepts only codes less than 255.

See http://tex.stackexchange.com/questions/308749/ for more technical details.

The poor bold is used for complete bold vaiant of the font. If the selected
font has its bold vaiant (like xits-math), you can re-define \boldmath macro
by:

\def\boldmath{%
   \loadumathfamily 1 {[xitsmath-bold]}{} % Base font
   \loadmathfamily  4 rsfs                % script
   \setmathdimens
}

XITSmath-bold needs correction: the norm symbol ||x|| is missing here. So, you
can define: 

\def\boldmath{%
   \loadumathfamily 1 {[xitsmath-bold]}{} % Base font
   \loadmathfamily  4 rsfs                % script
   \loadumathfamily 5 {[xitsmath-regular]}{}
   \def\|{\Udelimiter 0 5 "02016 }%       % norm delimiter from family 5
   \setmathdimens
}

--------------------

\loadmath{[XITSMath-Regular]} ... XITS MATH^^J
\loadmath{[latinmodern-math]} ... Latin Modern Math^^J
\loadmath{[texgyretermes-math]} ... TeXGyre Termes Math^^J 
\loadmath{[texgyrebonum-math]} ... TeXGyre Bonum Math^^J 
\loadmath{[texgyrepagella-math]} ... TeXGyre Pagella Math^^J 
\loadmath{[texgyreschola-math]} ... TeXGyre Schola Math^^J 
\loadmath{[texgyredejavu-math]} ... TeXGyre DeJaVu Math^^J 
\loadmath{[LibertinusMath-Regular]} ... Libertinus Math^^J 
\loadmath{[FiraMath-Regular]} ... Fira Math^^J 
\loadmath{[Asana-Math]} ... Asana Math^^J