fonts/xolonium/sourcefiles/features/Xolonium-Head.fea

   1 @FIGR = [zero one two three four five six seven eight nine];
   2 @NUMR = [zero.numr one.numr two.numr three.numr four.numr five.numr six.numr seven.numr eight.numr nine.numr];
   3 @DNOM = [zero.dnom one.dnom two.dnom three.dnom four.dnom five.dnom six.dnom seven.dnom eight.dnom nine.dnom];
   4
   5 @SUPS = [@NUMR];
   6 @SUBS = [@DNOM];
   7
   8 @PERIOD     = [comma period ellipsis];
   9 @COLON      = [colon semicolon];
  10 @GREEKCOLON = [uni037E anoteleia];
  11 @DASH       = [hyphen endash emdash];
  12 @GUILLEMET  = [guillemotleft guillemotright guilsinglleft guilsinglright];
  13 @MATH       = [plus less equal greater asciitilde logicalnot periodcentered multiply divide minus uni2219 infinity approxequal notequal];
  14 @BASEQUOTE  = [quotesinglbase quotedblbase];
  15 @ASCIIQUOTE = [quotedbl quotesingle asterisk asciicircum degree];
  16 @FANCYQUOTE = [quoteleft quoteright quotedblleft quotedblright];
  17 @QUESTION   = [question];
  18 @QUESTIONDN = [questiondown];
  19 @SLASH      = [slash];
  20 @BACKSLASH  = [backslash];
  21
  22 @BRACKET_ = [parenleft bracketleft braceleft uni2770 uni2772];
  23 @_BRACKET = [parenright bracketright braceright uni2771 uni2773];
  24
  25
  26 languagesystem DFLT dflt;
  27 languagesystem latn dflt;
  28 languagesystem latn ROM;
  29 languagesystem latn MOL;
  30 languagesystem latn ISM;
  31 languagesystem latn KSM;
  32 languagesystem latn LSM;
  33 languagesystem latn NSM;
  34 languagesystem latn SKS;
  35 languagesystem latn SSM;
  36 languagesystem grek dflt;
  37 languagesystem cyrl dflt;
  38
  39
  40 feature aalt
  41 {
  42         sub Eng      from [Eng.locl];
  43         sub Scedilla from [uni0218];
  44         sub scedilla from [uni0219];
  45         sub uni0162  from [uni021A];
  46         sub uni0163  from [uni021B];
  47
  48         sub zero      from [zero.zero];
  49         sub uni2070   from [uni2070.zero];
  50         sub uni2080   from [uni2080.zero];
  51         sub zero.numr from [zero.numr.zero];
  52         sub zero.dnom from [zero.dnom.zero];
  53
  54         sub exclamdown   from [exclamdown.case];
  55         sub questiondown from [questiondown.case];
  56 } aalt;
  57
  58
  59 feature locl
  60 {
  61         # Note: The explicit notation with exclude_dflt
  62         # is necessary to prevent FontForge from adding
  63         # the lookups to the dflt language.
  64
  65         script latn;
  66                 language ROM exclude_dflt;
  67                         lookup loclCommaaccent
  68                         {
  69                                 sub Scedilla by uni0218;
  70                                 sub scedilla by uni0219;
  71                                 sub uni0162  by uni021A;
  72                                 sub uni0163  by uni021B;
  73                         } loclCommaaccent;
  74                 language MOL exclude_dflt;
  75                         lookup loclCommaaccent;
  76
  77                 language ISM exclude_dflt;
  78                         lookup loclEng
  79                         {
  80                                 sub Eng by Eng.locl;
  81                         } loclEng;
  82                 language KSM exclude_dflt;
  83                         lookup loclEng;
  84                 language LSM exclude_dflt;
  85                         lookup loclEng;
  86                 language NSM exclude_dflt;
  87                         lookup loclEng;
  88                 language SKS exclude_dflt;
  89                         lookup loclEng;
  90                 language SSM exclude_dflt;
  91                         lookup loclEng;
  92 } locl;
  93
  94
  95 feature dlig
  96 {
  97         lookup dligCrossbar
  98         {
  99                 sub f' f by f.dlig;
 100                 sub t' t by t.dlig;
 101         } dligCrossbar;
 102
 103         lookup dligTittle
 104         {
 105                 sub f i by f_i;
 106                 sub f j by f_j;
 107         } dligTittle;
 108 } dlig;
 109
 110
 111 feature frac
 112 {
 113         # Trailblazer Algorithm
 114         # Example input: 00 000/000 000/000/000
 115
 116         # Start leftward numerator trail, originating from any slash
 117         # Result: 00 '''/000 '''/'''/000
 118
 119                 lookup fracNumr0 { sub @FIGR' slash by @NUMR; } fracNumr0;
 120                 lookup fracNumr1 { sub @FIGR' @NUMR by @NUMR; } fracNumr1;
 121                 lookup fracNumr2 { sub @FIGR' @NUMR by @NUMR; } fracNumr2;
 122                 lookup fracNumr3 { sub @FIGR' @NUMR by @NUMR; } fracNumr3;
 123                 lookup fracNumr4 { sub @FIGR' @NUMR by @NUMR; } fracNumr4;
 124                 lookup fracNumr5 { sub @FIGR' @NUMR by @NUMR; } fracNumr5;
 125                 lookup fracNumr6 { sub @FIGR' @NUMR by @NUMR; } fracNumr6;
 126                 lookup fracNumr7 { sub @FIGR' @NUMR by @NUMR; } fracNumr7;
 127                 lookup fracNumr8 { sub @FIGR' @NUMR by @NUMR; } fracNumr8;
 128                 lookup fracNumr9 { sub @FIGR' @NUMR by @NUMR; } fracNumr9;
 129
 130         # Trails that touch a figure or slash on their left end are invalid,
 131         # mark them by replacing the numerators with denominators
 132         # Result: 00 '''/000 '''/.../000
 133
 134                 lookup fracMark { sub [slash @FIGR @DNOM] @NUMR' by @DNOM; } fracMark;
 135
 136         # Replace any valid slash with a fraction glyph
 137         # Result: 00 '''|000 '''/.../000
 138
 139                 lookup fracSlash { sub @NUMR slash' @FIGR by slash.frac; } fracSlash;
 140
 141         # Change marked trails back to figures
 142         # Result: 00 '''|000 '''/000/000
 143
 144                 lookup fracUnMark { sub @DNOM by @FIGR; } fracUnMark;
 145
 146         # Change trails not originating from a fraction glyph back to figures
 147         # Result: 00 '''|000 000/000/000
 148
 149                 lookup fracUnNumr0 { sub @NUMR' slash by @FIGR; } fracUnNumr0;
 150                 lookup fracUnNumr1 { sub @NUMR' @FIGR by @FIGR; } fracUnNumr1;
 151                 lookup fracUnNumr2 { sub @NUMR' @FIGR by @FIGR; } fracUnNumr2;
 152                 lookup fracUnNumr3 { sub @NUMR' @FIGR by @FIGR; } fracUnNumr3;
 153                 lookup fracUnNumr4 { sub @NUMR' @FIGR by @FIGR; } fracUnNumr4;
 154                 lookup fracUnNumr5 { sub @NUMR' @FIGR by @FIGR; } fracUnNumr5;
 155                 lookup fracUnNumr6 { sub @NUMR' @FIGR by @FIGR; } fracUnNumr6;
 156                 lookup fracUnNumr7 { sub @NUMR' @FIGR by @FIGR; } fracUnNumr7;
 157                 lookup fracUnNumr8 { sub @NUMR' @FIGR by @FIGR; } fracUnNumr8;
 158                 lookup fracUnNumr9 { sub @NUMR' @FIGR by @FIGR; } fracUnNumr9;
 159
 160         # Insert the denominators
 161         # Result: 00 '''|... 000/000/000
 162
 163                 lookup fracDnom { sub [slash.frac @DNOM] @FIGR' by @DNOM; } fracDnom;
 164
 165         # Move the fraction closer to a leading figure
 166         # Result: 00'''|... 000/000/000
 167
 168                 sub @FIGR [space uni00A0]' @NUMR by [space.frac uni00A0.frac];
 169 } frac;
 170
 171
 172 feature sups
 173 {
 174         sub @FIGR by @SUPS;
 175 } sups;
 176
 177
 178 feature subs
 179 {
 180         lookup subsSub
 181         {
 182                 sub @FIGR by @SUBS;
 183         } subsSub;
 184 } subs;
 185
 186
 187 feature sinf
 188 {
 189         lookup subsSub;
 190         lookup sinfPos
 191         {
 192                 pos [@SUBS zero.dnom.zero] <0 -120 0 0>;
 193         } sinfPos;
 194 } sinf;
 195
 196
 197 feature zero
 198 {
 199         @zeroEmpty = [zero uni2070 uni2080 zero.numr zero.dnom];
 200         @zeroSlash = [zero.zero uni2070.zero uni2080.zero zero.numr.zero zero.dnom.zero];
 201
 202         sub @zeroEmpty by @zeroSlash;
 203 } zero;