Source Browser ?

1%D \module
2%D   [       file=typo-spa,
3%D        version=2009.03.27, % code moved from cors-spa.mkiv
4%D          title=\CONTEXT\ Typesetting Macros,
5%D       subtitle=Spacing,
6%D         author=Hans Hagen,
7%D           date=\currentdate,
8%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
9%C
10%C This module is part of the \CONTEXT\ macro||package and is
11%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
12%C details.
13
14\writestatus{loading}{ConTeXt Typesetting Macros / Spacing}
15
16\unprotect
17
18\registerctxluafile{typo-spa}{autosuffix}
19
20\definesystemattribute[spacing][public]
21
22% experimental spacing
23%
24% test: oeps {\setcharacterspacing[frenchpunctuation]x: xx \bfd x: xx} oeps: test
25%
26% todo: page | text => pagebody or text only
27
\installcorenamespace{characterspacing}
29
\installsetuponlycommandhandler \??characterspacing {_p_characterspacing} % private
31
\setup_p_characterspacing
33  [\c!left=0,
34   \c!right=0,
35   \c!alternative=0,
36   \c!language=0]

\permanent\tolerant\protected\def\definecharacterspacing[#1]#*[#2]%
39  {\clf_definecharacterspacing{#1}{#2}}

41\permanent\tolerant\protected\def\setupcharacterspacing[#1]#*[#S#2]#*[#S#3]% todo: #2 list
  {\begingroup
   \ifchknumber#2\or
44     \setupcurrent_p_characterspacing[#3]%
45     \clf_setupcharacterspacing
46        {#1}%
        \numexpr#2\relax
        {%
          left        \direct_p_characterspacingparameter\c!left\space
50          right       \direct_p_characterspacingparameter\c!right\space
51          alternative \direct_p_characterspacingparameter\c!alternative\space
52        }%
53     \relax
   \else
     \setupcurrent_p_characterspacing[#2]%
56     \clf_setupcharacterspacing
        {#1}%
58        \zerocount
59        {%
60          language {\direct_p_characterspacingparameter\c!language}%
        }%
62   \fi
63   \endgroup}
64
65\permanent\protected\def\setcharacterspacing[#1]% we can store the attribute if we want speed
66  {\clf_setcharacterspacing{#1}}
67
68\permanent\protected\def\resetcharacterspacing % fast one
  {\c_attr_spacing\attributeunsetvalue}
70
\appendtoks
    \resetcharacterspacing
\to \everyresettypesetting

% \setcharacterspacing[frenchpunctuation]
% «\type{bla}»\crlf « \type{bla}»\crlf
77% «bla »\crlf « bla»\crlf « bla »\crlf
78% bla: bla\crlf bla : bla
79
80\definecharacterspacing [frenchpunctuation] % name may change / unit is em
81
82\setupcharacterspacing [frenchpunctuation] ["003A] [\c!left =.25,\c!alternative=1] % : % strip preceding space(char)
83\setupcharacterspacing [frenchpunctuation] ["003B] [\c!left =.25,\c!alternative=1] % ; % strip preceding space(char)
84\setupcharacterspacing [frenchpunctuation] ["003F] [\c!left =.25,\c!alternative=1] % ? % strip preceding space(char)
85\setupcharacterspacing [frenchpunctuation] ["0021] [\c!left =.25,\c!alternative=1] % ! % strip preceding space(char)
86\setupcharacterspacing [frenchpunctuation] ["00AB] [\c!right=.25,\c!alternative=1] % guillemotleft/leftguillemot   % strip following space(char)
87\setupcharacterspacing [frenchpunctuation] ["00BB] [\c!left =.25,\c!alternative=1] % guillemotright/rightguillemot % strip preceding space(char)
88
89% \definecharacterspacing [myspacing][frenchspacing]
90%
91% \setupcharacterspacing [myspacing] ["27E8] [alternative=1,right=0.25]
92% \setupcharacterspacing [myspacing] ["27E9] [alternative=1,left=0.25]
93
94\protect \endinput
95