diff options
Diffstat (limited to 'doc/context/sources/general/manuals/luatex/luatex-math.tex')
| -rw-r--r-- | doc/context/sources/general/manuals/luatex/luatex-math.tex | 53 |
1 files changed, 51 insertions, 2 deletions
diff --git a/doc/context/sources/general/manuals/luatex/luatex-math.tex b/doc/context/sources/general/manuals/luatex/luatex-math.tex index 9fb0c02ab..cf5489641 100644 --- a/doc/context/sources/general/manuals/luatex/luatex-math.tex +++ b/doc/context/sources/general/manuals/luatex/luatex-math.tex @@ -631,7 +631,7 @@ example. \stoptexdefinition \start - \setupbodyfont[cambria] + \switchtobodyfont[cambria] \starttabulate[|c|c|c|c|c|c|] \Whatever{0}% \Whatever{1}% @@ -641,6 +641,55 @@ example. This kind of parameters relate to the fact that italic correction in \OPENTYPE\ math is bound to fuzzy rules. So, control is the solution. +\section{Script boxes} + +If you want typeset text in math macro packages often provide something \type +{\text} which obeys the script sizes. As the definition can be anything there is +a good change that the kerning doesn't come out well when used in a script. Given +that the first glyph ends up in an \type {\hbox} we have some control over this. +And, as a bonus we also added control over the normal sublist kerning. The \type +{\mathscriptboxmode} parameter defaults to~1. + +\starttabulate[|l|l|] +\NC \type {0} \NC forget about kerning \NC \NR +\NC \type {1} \NC kern math sub lists with a valid glyph \NC \NR +\NC \type {2} \NC also kern math sub boxes that have a valid glyph \NC \NR +\NC \type {2} \NC only kern math sub boxes with a boundary node present\NC \NR +\stoptabulate + +Here we show some examples. Of course this doesn't solve all our problems, if +only because some fonts have characters with bounding boxes that compensate for +italics, while other fonts can lack kerns. + +\startbuffer[1] + $T_{\tf fluff}$ +\stopbuffer + +\startbuffer[2] + $T_{\text{fluff}}$ +\stopbuffer + +\startbuffer[3] + $T_{\text{\boundary1 fluff}}$ +\stopbuffer + +\unexpanded\def\Show#1#2#3% + {\doifelsenothing{#3} + {\small\typeinlinebuffer[#1]} + {\doifelse{#3}{-} + {\small\type{mode #2}} + {\switchtobodyfont[#3]\showfontkerns\showglyphs\mathscriptboxmode#2\relax\inlinebuffer[#1]}}} + +\starttabulate[|lT|c|c|c|c|c|] + \NC \NC \Show{1}{0}{} \NC\Show{1}{1}{} \NC \Show{2}{1}{} \NC \Show{2}{2}{} \NC \Show{3}{3}{} \NC \NR + \NC \NC \Show{1}{0}{-} \NC\Show{1}{1}{-} \NC \Show{2}{1}{-} \NC \Show{2}{2}{-} \NC \Show{3}{3}{-} \NC \NR + \NC modern \NC \Show{1}{0}{modern} \NC\Show{1}{1}{modern} \NC \Show{2}{1}{modern} \NC \Show{2}{2}{modern} \NC \Show{3}{3}{modern} \NC \NR + \NC lucidaot \NC \Show{1}{0}{lucidaot} \NC\Show{1}{1}{lucidaot} \NC \Show{2}{1}{lucidaot} \NC \Show{2}{2}{lucidaot} \NC \Show{3}{3}{lucidaot} \NC \NR + \NC pagella \NC \Show{1}{0}{pagella} \NC\Show{1}{1}{pagella} \NC \Show{2}{1}{pagella} \NC \Show{2}{2}{pagella} \NC \Show{3}{3}{pagella} \NC \NR + \NC cambria \NC \Show{1}{0}{cambria} \NC\Show{1}{1}{cambria} \NC \Show{2}{1}{cambria} \NC \Show{2}{2}{cambria} \NC \Show{3}{3}{cambria} \NC \NR + \NC dejavu \NC \Show{1}{0}{dejavu} \NC\Show{1}{1}{dejavu} \NC \Show{2}{1}{dejavu} \NC \Show{2}{2}{dejavu} \NC \Show{3}{3}{dejavu} \NC \NR +\stoptabulate + \section{Unscaled fences} The \type {\mathdelimitersmode} primitive is experimental and deals with the @@ -659,7 +708,7 @@ so that the same spacing applies as with unfenced variants. Here we show Cambria \stoptexdefinition \start - \setupbodyfont[cambria] + \switchtobodyfont[cambria] \starttabulate[|l|l|l|] \Whatever{0}\Whatever{1}\Whatever{2}\Whatever{3}% \Whatever{4}\Whatever{5}\Whatever{6}\Whatever{7}% |