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Diffstat (limited to 'tex/context/base/mkiv/font-set.mkvi')
| -rw-r--r-- | tex/context/base/mkiv/font-set.mkvi | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/font-set.mkvi b/tex/context/base/mkiv/font-set.mkvi new file mode 100644 index 000000000..b29545ace --- /dev/null +++ b/tex/context/base/mkiv/font-set.mkvi @@ -0,0 +1,164 @@ +%D \module +%D [ file=font-set, +%D version=2011.01.13, % (copied fron font-ini) +%D title=\CONTEXT\ Font Macros, +%D subtitle=Initial Loading, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +\writestatus{loading}{ConTeXt Font Macros / Initial Loading} + +\unprotect + +%D Defining fonts using \type{\definebodyfont} takes time, so we +%D prefer to predefine at least the Computer Modern Roman +%D fonts. However, loading all those fonts at definition time +%D would take both time and space. But even worse, once fonts +%D are loaded into memory, their encoding vector is fixed, +%D which is a handicap when we want to distribute the compact +%D \type{fmt} files. So what we want to do is defining fonts in +%D a way that postpones the loading. We accomplish this by only +%D loading the fonts when we switch to another bodyfont size. +%D Among the other alternatives, such as loading the font at +%D the moment of activation and redefining the activation +%D macro afterwards, this proved to be the most efficient +%D alternative. +%D +%D The next few macros take care of the one exeption on this +%D scheme. When at format generation time we load the default +%D font file, the one that defines the Computer Modern Fonts, +%D we don't want the fonts metrics to end up in the format +%D file, so we temporary prohibit loading. This means that at +%D runtime we have to load the default bodyfont size just before +%D we start typesetting. + +% \enablemode[lmmath] + +\let\m_font_fallback_name\empty + +% keep as reference: +% +% \def\font_preloads_reset_nullfont % this is needed because some macro packages (tikz) misuse \nullfont +% {\dorecurse\plusseven{\fontdimen\recurselevel\nullfont\zeropoint}% keep en eye on this as: +% \clf_resetnullfont % in luatex 0.70 this will also do the previous +% \globallet\font_preloads_reset_nullfont\relax} + +\def\font_preload_check_mode + {\doifelsemode{lmmath} + {\def\m_font_fallback_name{modern-designsize-virtual}}% this will stay + {\def\m_font_fallback_name{modern-designsize}}% % this might become 'modern' + \glet\font_preload_check_mode\relax} + +\def\font_preload_default_fonts + {\font_preloads_reset + \font_preload_check_mode + \setupbodyfont[\m_font_fallback_name,\fontstyle,\fontbody]% + \showmessage\m!fonts6{fallback \m_font_fallback_name\space \fontstyle\normalspace\normalizedbodyfontsize}} + +\def\font_preload_default_fonts_mm + {\font_preload_check_mode + \writestatus\m!fonts{preloading \m_font_fallback_name\space (math)}% + \definetypeface[\fontclass][\s!mm][\s!math][\m_font_fallback_name][\s!default]% + \showmessage\m!fonts6{fallback \m_font_fallback_name\space mm \normalizedbodyfontsize}} + +\def\font_preload_default_fonts_tt + {\font_preload_check_mode + \writestatus\m!fonts{preloading \m_font_fallback_name\space (mono)}% + \definetypeface[\fontclass][\s!tt][\s!mono][\m_font_fallback_name][\s!default]% + \showmessage\m!fonts6{fallback \m_font_fallback_name\space tt \normalizedbodyfontsize}} + +\def\font_preloads_reset + {\glet\font_preload_default_fonts \relax + %\glet\font_preload_default_fonts_tt\relax + %\glet\font_preload_default_fonts_mm\relax + \glet\font_preloads_zero_stage \relax + \glet\font_preloads_first_stage \relax + \glet\font_preloads_second_stage \relax + %\glet\font_preloads_third_stage \relax + \glet\fourthstagepreloadfonts \relax + \global\everyhbox\emptytoks + \global\everyvbox\emptytoks + % old: \font_preloads_reset_nullfont, new: + \clf_resetnullfont} + +\appendtoks + \font_preloads_reset +\to \everystartnotext + +\def\font_preloads_reset_checked + {\glet\font_preload_default_fonts_tt\relax + \glet\font_preload_default_fonts_mm\relax + \glet\font_preloads_third_stage \relax +% \glet\font_preloads_fourth_stage \relax + } + +\def\font_preloads_zero_stage_indeed + {\definedfont[\s!file:lmmono10-regular sa 1]} + +\unexpanded\def\font_preloads_zero_stage + {\writestatus\m!fonts{beware: no fonts are loaded yet, using 'lm mono' in box}% + \glet\font_preloads_zero_stage\font_preloads_zero_stage_indeed + \font_preloads_zero_stage} + +\unexpanded\def\font_preloads_first_stage % % *nofonts -> *preloadfonts + {\doifelsemode{*preloadfonts} + {\font_preload_default_fonts + \writestatus\m!fonts{preloading latin modern fonts (first stage)}} + {\writestatus\m!fonts{latin modern fonts are not preloaded}}} + +\unexpanded\def\font_preloads_second_stage + {\writestatus\m!fonts{preloading latin modern fonts (second stage)}% + \font_preload_default_fonts} + +\unexpanded\def\font_preloads_third_stage % always + {\ifx\fontclass\empty + \writestatus\m!fonts{preloading latin modern fonts (third stage)}% + \font_preload_default_fonts + \font_preloads_reset + \else + \font_preloads_reset + \pushmacro\fontstyle + \ifcsname\??fontclass\fontclass\s!mm\s!features\endcsname \else + \font_preload_default_fonts_mm + \fi + \ifcsname\??fontclass\fontclass\s!tt\s!features\endcsname \else + \font_preload_default_fonts_tt + \fi + \popmacro\fontstyle + \font_preloads_reset_checked % reset third, mm and tt + \setupbodyfont[\fontstyle]% + \fi} + +\unexpanded\def\font_preloads_fourth_stage + {\begingroup + %ifzeropt\fontcharwd\font\number`!\relax + \setbox\scratchbox\hbox{c o n t e x t}% + \ifzeropt\wd\scratchbox + \writeline + \writestatus\m!fonts{!! No bodyfont has been defined and no defaults have been}% + \writestatus\m!fonts{!! loaded (maybe due to a missing \string\starttext).}% + \writeline + \fi + \font_preloads_reset + \endgroup} + +\appendtoks + \everyhbox{\font_preloads_zero_stage}% + \everyvbox{\font_preloads_zero_stage}% +\to \everydump + +\unexpanded\def\font_preloads_at_every_job {\font_preloads_first_stage } +\unexpanded\def\font_preloads_at_start_text{\font_preloads_second_stage} +\unexpanded\def\font_preloads_at_stop_text {\font_preloads_fourth_stage} +\unexpanded\def\font_preloads_at_definition{\font_preloads_third_stage + \glet\font_preloads_at_definition\relax} + +% \unexpanded\def\checkpreloadedbodyfont % no \let here +% {\font_preloads_at_start_text} + +\protect \endinput |