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%D \module
%D [ file=mp-miss.mpiv,
%D version=2021.02.01,
%D title=\CONTEXT\ \METAPOST\ graphics,
%D subtitle=missing glyphs,
%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.
if known metafun_loaded_miss : endinput ; fi ;
newinternal boolean metafun_loaded_miss ; metafun_loaded_miss := true ; immutable metafun_loaded_miss ;
picture MissingSnippets[][];
vardef MissingGlyphSymbol(expr w, h, d) =
image (
draw (0,-d)--(w,-d)--(w,h)--(0,h)--cycle ;
if d <> 0 : draw (0,0)--(w,0) ;
)
enddef ;
vardef MissingLowercase = image ( draw MissingGlyphSymbol(.45, .55, .20) scaled 1000 ; ) enddef ;
vardef MissingUppercase = image ( draw MissingGlyphSymbol(.65, .70, .25) scaled 1000 ; ) enddef ;
vardef MissingMark = image ( draw MissingGlyphSymbol(.15, .70, -.50) scaled 1000 ; ) enddef ;
vardef MissingPunctuation = image ( draw MissingGlyphSymbol(.15, .55, .20) scaled 1000 ; ) enddef ;
vardef MissingUnknown = image ( draw MissingGlyphSymbol(.45, .20, 0) scaled 1000 ; ) enddef ;
% vardef MissingGlyph =
% pickup pencircle scaled 0.05 ;
% composeglyph(MissingSnippets[getparameterdefault "mpsfont" "namespace" 1]) ;
% enddef ;
vardef MissingGlyph =
save u ; u := getparameterdefault "mpsfont" "unicode" 1;
save s ; s := getparameterdefault "mpsfont" "scale" 1 ;
save n ; n := getparameterdefault "mpsfont" "namespace" 1 ;
save i ; i := getparameterdefault "mpsfont" "slant" 0 ;
save w ; w := getparameterdefault "mpsfont" "weight" 1 ;
pickup pencircle scaled (0.05 * w) ;
MissingSnippets[n][u] := image (
draw scantokens ( getparameter "mpsfont" "shapes" (1) "shape" )
withcolor getparameter "mpsfont" "shapes" (1) "color"
) scaled s slanted i ;
registercomposedglyph(u, MissingSnippets[n]) ;
enddef ;
lmt_registerglyphs [
name = "missing",
units = 1000,
width = 100,
height = 100,
depth = 0,
] ;
% we need to set up some basics (signals to the backend and such) at definition
% time so we just force a bogus shape (zero)
lmt_registerglyph [
category = "missing",
] ;
permanent MissingSnippets, MissingGlyphSymbol, MissingLowercase, MissingUppercase,
MissingMark, MissingPunctuation, MissingUnknown, MissingGlyph ;
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