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|
%
% autometric.mf -- administrative MF routines
%
% source file of the Feta (not an acronym for Font-En-Tja)
% pretty-but-neat music font
%
% (c) 1997--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
% Jan Nieuwenhuizen <janneke@gnu.org>
%
% These macros help create ascii logging output
% to automate generation of the lily tables.
% The output should be parsed by the mf-to-table script.
message "******************************************************";
message "Using feta Autometric macros.";
message "order of messages: ";
message " NAME/CODE/BP/WD/DP/HT/WX/WY";
message "******************************************************";
message "";
% font or database?
def fet_beginfont (expr name, size, encod) =
font_identifier := name & decimal size;
font_size size;
font_coding_scheme "asis";
message "@{font@:GNU@:LilyPond@:" & name
& "@:" & decimal size
& "@:" & encod
& "@}";
message "";
enddef;
def fet_endfont =
message "@{tnof@}";
enddef;
% group or table?
def fet_begingroup (expr name) =
begingroup;
save feta_group;
string feta_group;
feta_group := name;
message "@{group@:" & feta_group
& "@}";
message "";
enddef;
def fet_endgroup (expr name) =
message "@{puorg@:" & name
& "@}";
message "";
endgroup;
enddef;
def autometric_parameter (expr name, value) =
message "@{parameter@:" & name
& "@:" & decimal value
& "@}";
enddef;
def autometric_output_char =
message "@{char@:" & charnamestr
& "@:" & decimal charcode
& "@:" & decimal charbp
& "@:" & decimal charwd
& "@:" & decimal chardp
& "@:" & decimal charht
& "@:" & decimal charwx
& "@:" & decimal charwy
& "@:" & idstr
& "@}";
enddef;
def hround_pixels (expr sharped) =
hround (sharped * hppp)
enddef;
def vround_pixels (expr sharped) =
vround (sharped * vppp)
enddef;
def tand (expr alpha) =
(sind alpha / cosd alpha)
enddef;
def to_bp (expr num) =
decimal (num * bp_per_pixel)
enddef;
% breapth, width, depth, height
% breapth x-depth
def set_char_box (expr b_sharp, w_sharp, d_sharp, h_sharp) =
save scharbp, scharht, scharwd, schardp;
% some paranoia if someone calls set_char_box (charwd, charbp, ...)
scharbp := b_sharp;
scharht := h_sharp;
schardp := d_sharp;
scharwd := w_sharp;
charbp := scharbp;
charht := scharht;
chardp := schardp;
charwd := scharwd;
w := hround (w_sharp * hppp);
b := hround (b_sharp * hppp);
h := vround (h_sharp * vppp);
d := vround (d_sharp * vppp);
charwx := charwd;
charwy := 0;
% additions for mf2pt1 (`bbox' is called `glyph_dimensions' starting
% with version 2.4.2)
if known bp_per_pixel:
special "% MF2PT1: bbox "
& to_bp (-b) & " "
& to_bp (-d) & " "
& to_bp (w) & " "
& to_bp (h);
special "% MF2PT1: glyph_dimensions "
& to_bp (-b) & " "
& to_bp (-d) & " "
& to_bp (w) & " "
& to_bp (h);
special "% MF2PT1: font_size " & decimal designsize;
special "% MF2PT1: font_slant " & decimal font_slant_;
for fvar = "font_identifier",
"font_coding_scheme",
"font_version",
"font_comment",
"font_family",
"font_weight",
"font_unique_id",
"font_name":
if known scantokens (fvar & "_"):
special "% MF2PT1: "
& fvar & " "
& scantokens (fvar & "_");
fi;
endfor;
for fvar = "font_underline_position",
"font_underline_thickness":
if known scantokens (fvar & "_"):
special "% MF2PT1: "
& fvar & " "
& scantokens ("decimal " & fvar & "_");
fi;
endfor;
special "% MF2PT1: font_fixed_pitch "
& (if font_fixed_pitch_: "1" else: "0" fi);
% this must come after the `font_size' special
special "% MF2PT1: charwd " & decimal charwd;
fi;
enddef;
def no_dimen_beginchar (expr c) =
begingroup;
charcode := if known c: byte c else: 0; fi;
charic := 0;
clearxy;
clearit;
clearpen;
scantokens extra_beginchar;
enddef;
%
% we leave the ctrl characters alone.
%
code := 32;
% starts just as plain mf's beginchar:
% charcode,
% and then adds:
% charname see below
% id index in lily's table
% The dimensions are uninitialised; you should use set_char_box manually.
def fet_beginchar (expr name, id_lit) =
save idstr, charnamestr;
save charbp;
save w, b, h, d;
save charwx, charwy;
string idstr, charnamestr;
charnamestr := name;
idstr := id_lit;
% addition for mf2pt1
if known bp_per_pixel:
if known feta_group:
special "% MF2PT1: glyph_name "
& feta_group & "." & idstr;
else:
special "% MF2PT1: glyph_name " & idstr;
fi;
fi;
no_dimen_beginchar (incr code) name;
enddef;
def makebox_with_breapth (text r) =
for y = -d, 0, h:
r ((-b, y), (w, y));
endfor;
for x = -b, 0, w:
r ( (x, -d), (x, h));
endfor;
enddef;
%
% override plain endchar. We want a different box.
%
def breapth_endchar =
scantokens extra_endchar;
if proofing > 0:
makebox_with_breapth (proofrule);
fi;
chardx := (w + b); % what the heck is chardx
shipit;
endgroup;
enddef;
def fet_endchar =
autometric_output_char;
breapth_endchar;
enddef;
|
