Hagen - Pragma ADE

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$Integrating TEX, MetaPost, JavaScript and PDF - Pragma ADE$

32 Modes glyph 256 font 33: U+00061: a glyph 258 font 33: U+0FB03: ffi glyph 256 font 33: U+0006C: l disc glyph 256 font 33: U+00069: i disc glyph 256 font 33: U+00061: a disc glyph 256 font 33: U+00074: t glyph 256 font 33: U+00069: i glyph 256 font 33: U+0006F: o glyph 256 font 33: U+0006E: n prebreak : glyph 0 font 33: U+0002D: - prebreak : glyph 0 font 33: U+0002D: - prebreak : glyph 0 font 33: U+0002D: - component : glyph 2 font 33: U+0FB00: ff component : glyph 1 font 33: U+00069: i component : glyph 1 font 33: U+00066: f disc component : glyph 1 font 33: U+00066: f Figure 2.4 The rendering of the word ‘affiliation’. prebreak : glyph 1 font 33: U+0002D: - are clearly separated and that no complex reconstruction and re-hyphenation has to take place. The speed penalty can be neglected and the extra memory overhead is small compared to what is needed anyway. In base mode the raw font data is read in and from that only basic information is used to construct the tfm table: dimensions, ligatures and kerns. In a node list, all glyph ranges that refer to such a font get the standard ligature and kern routines applied, but only if the subtype is still less than 256. This check on subtype prevents duplicate processing that might happen as a side effect of for instance unboxing some material in a yet to be typeset text. Given that the majority of what T E X has to deal with is relatively simple latin script, base mode processing is rather convenient and efficient. It is also the reference point of other kinds of processing. The most simple way to force base mode is the following: \definefontfeature[basemode][mode=base,kern=yes,liga=yes] \definefont[MyTitleFont][SerifBold*basemode at 12pt]
glyph 256 font 33: U+00061: a glyph 256 font 33: U+00062: b glyph 256 font 33: U+00063: c disc glyph 256 font 33: U+00067: g glyph 256 font 33: U+00068: h glyph 256 font 33: U+00069: i prebreak : glyph 0 font 33: U+00064: d replacement : glyph 0 font 33: U+00066: f postbreak : glyph 0 font 33: U+00065: e Figure 2.5 The rendering of the bogus word ‘abcghi’ with an explicit discretionary added. Here \MyTitleFont will be a bold serif with ligatures and kerns applied. However, as an OpenType font can have many features, the following definitions are also valid: \definefontfeature[basemode-o][mode=base,kern=yes,onum=yes,liga=yes] \definefontfeature[basemode-s][mode=base,kern=yes,smcp=yes] The tfm constructor will filter the right information from the font data and construct a proper table based on these specifications. But you need to keep in mind that when for instance old style numerals or small caps are activated, that their rendering (the glyph) will always be used. So, for instance 3 and A keep their Unicode points but as part of their specification they will get an index pointing to the oldstyle or small caps variant and the dimensions of that shape will be used. 2.4 Node mode Node mode is by far the most interesting of the modes. When enabled we only pass a few properties of glyphs to the engine: the width, height and depth and optionally protrusion, expansion factors as well as some extra ConTEXt specific quantities. So there is no kerning and no ligature building done by the engine. Instead we do this in Lua by walking over the node list and checking if some action is needed. The default feature set enables kerning and ligature building for default and/or Latin scripts and the default language. Being a relative simple feature, ligatures don’t take much action. Next we show a trace of a ligature replacement. font 44: DejaVuSerif.ttf @ 24.0pt A.9 33 Modes
Page 1: explaining luatex and mkiv Fonts ou
Page 4 and 5: 2 Contents 5.4 Goodies 73 5.5 Analy
Page 6 and 7: 4 Contents
Page 8 and 9: 6 Introduction In this manual we wi
Page 10 and 11: 8 Font formats a b g l q . ; ? ffi
Page 12 and 13: 10 Font formats When T E X ships ou
Page 14 and 15: 12 A.4 A.3 Font formats multiple ac
Page 16 and 17: 14 Font formats can be rules that t
Page 18 and 19: 16 Font formats /fonts/tfm/vendor/t
Page 20 and 21: 18 Modes raw tfm normalized tfm raw
Page 22 and 23: 20 Modes shown next: kern cyrl dflt
Page 24 and 25: 22 Modes ccmp cyrl mkd абвгде
Page 26 and 27: 24 Modes dlig latn gag abcdefghijkl
Page 28 and 29: 26 Modes liga latn nsm abcdefghijkl
Page 30 and 31: 28 Modes salt latn mol abcdefghijkl
Page 32 and 33: 30 Modes glyph 256 font 42: U+00074
Page 36 and 37: 34 Modes glyph 256 font 33: U+00065
Page 38 and 39: 36 Modes optimizer that can apply a
Page 40 and 41: 38 Modes ا خǇَ﮲ ف﮲َ step
Page 42 and 43: 40 Modes dir +TRT glyph 256 font 49
Page 44 and 45: 42 Modes and now we get: 123 normal
Page 46 and 47: 44 Modes MkIV run can be faster tha
Page 48 and 49: 46 Lookups \font \MyFontG = lmr12 s
Page 50 and 51: 48 Lookups 3.4 Name Say that we wan
Page 52 and 53: 50 Lookups We add another specifier
Page 54 and 55: 52 Methods \definefont [MyFont] [Bo
Page 56 and 57: 54 Methods } copyright = "ConTeXt d
Page 58 and 59: 56 Features of all, all we get to s
Page 60 and 61: 58 Features in base mode. A single
Page 62 and 63: 60 Features accumulate within a wor
Page 64 and 65: 62 Features features analyze=yes, c
Page 66 and 67: 64 Features \definedfont[lmroman10-
Page 68 and 69: 66 Features single substitutions or
Page 70 and 71: 68 F -0.492 eatures result ffi feat
Page 72 and 73: 70 Features font 80: lmroman10-regu
Page 74 and 75: 72 Features font 46: cambria.ttf @
Page 76 and 77: 74 Features } } This goodie file is
Page 78 and 79: 76 Features { name = "msbm10.tfm",
Page 80 and 81: 78 Features \starttypescript[somefo
Page 82 and 83: 80 Features \setupbodyfont [mojcasf
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82 Features } normalweight = "extra
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84 Features "QF.waqf", "SKTH.waqf",
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86 Features featureset=smallcaps] O
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88 Features } }, When defining the
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90 Features local defaultfraction =
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92 Features } } ["LMRoman-Bold"] =
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94 Features In fact, in addition to
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96 Features } This time the applica
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98 Features step 1 I don't wanna kn
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100 Features If you’re lucky your
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102 Scripts
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However, when we go the other way,
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122 Math the regular a--z character
Page 127 and 128:
While there are lots of text fonts,
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8 Extensions 8.1 Introduction One o
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[default] [itlc=5] This is demonstr
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132 Extensions \definefontfeature [
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134 Extensions characters to improv
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136 Extensions U+00079 0.05 y 0.05
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138 Extensions protrusion classes T
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140 Extensions [fonts.composing.def
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142 } Extensions top = { x = -250,
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144 Extensions
Page 148 and 149:
146 Hooks
Page 150 and 151:
148 ) Appendix (LIG C l O 10) (KRN
Page 152 and 153:
150 ) Appendix (KRN O 177 R 0.056)
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152 Appendix Notice Copyright 2003-
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154 Appendix ... KPX seven.prop hyp
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156 Appendix name = , features = ,
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158 Appendix [] = "", ... default =
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160 Appendix A.10 Discretionary nod
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