/usr/share/texlive/texmf-dist/tex/fontinst/base/bbox.sty is in texlive-font-utils 2013.20140215-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 | % bbox.sty -- bounding box extension for fontinst
%
% This file defines the following commands for setting, resetting,
% and unsetting the bounding boxes of glyphs:
%
% \setglyphbb{GLYPH}{LEFT}{BOTTOM}{RIGHT}{TOP}
% \resetglyphbb{GLYPH}{LEFT}{BOTTOM}{RIGHT}{TOP}
% \unsetglyphbb{GLYPH}
%
% It also defines the following four integer expressions for
% quering bounding box metrics:
%
% \bbleft{GLYPH}
% \bbbottom{GLYPH}
% \bbright{GLYPH}
% \bbtop{GLYPH}
%
% For glyphs that do not have a bounding box set, they default
% to using the "TeX box" of the glyph.
%
% Finally, the file changes AFM-to-MTX conversions so that bounding
% box information is converted to \setglyphbb commands and augments
% font transformation and reglyphing to preserve this information.
\needsfontinstversion{1.927}
\fontinstcc
\def\resetglyphbb#1#2#3#4#5{
\eval_expr_to\a_count{#2}
\eval_expr_to\b_count{#3}
\eval_expr_to\c_count{#4}
\eval_expr_to\d_count{#5}
\x_cs\edef{gb-#1}{
{\the\a_count}{\the\b_count}{\the\c_count}{\the\d_count}
}
}
\def\setglyphbb#1#2#3#4#5{
\if_undefined{gb-\glyph_name_modifier{#1}}\then
\resetglyphbb{\glyph_name_modifier{#1}}{#2}{#3}{#4}{#5}
\fi
}
\def\unsetglyphbb#1{\x_cs\let{gb-#1}=\x_relax}
\def\first_of_four#1#2#3#4{#1}
\def\second_of_four#1#2#3#4{#2}
\def\third_of_four#1#2#3#4{#3}
\def\fourth_of_four#1#2#3#4{#4}
\def\bbleft#1{
\if_defined{gb-#1}\then
\expandafter\expandafter \expandafter\first_of_four
\csname gb-#1\endcsname
\else
0
\fi
}
\def\bbbottom#1{
\if_defined{gb-#1}\then
\expandafter\expandafter \expandafter\second_of_four
\csname gb-#1\endcsname
\else
\neg{\depth{#1}}
\fi
}
\def\bbright#1{
\if_defined{gb-#1}\then
\expandafter\expandafter \expandafter\third_of_four
\csname gb-#1\endcsname
\else
\width{#1}
\fi
}
\def\bbtop#1{
\if_defined{gb-#1}\then
\expandafter\expandafter \expandafter\fourth_of_four
\csname gb-#1\endcsname
\else
\height{#1}
\fi
}
% Make \afmtomtx generate \setglyphbb commands:
\def\afm_char{
\a_count=-\bbox_lly
\eval_expr{
\italcorr_expression\x_width\bbox_llx\bbox_urx\bbox_lly\bbox_ury
}
\out_line{
\ifnum -1<\char_slot
\string\setrawglyph
\else
\string\setnotglyph
\fi
{\char_name}
{\raw_font_name}
{10pt}
{\the\char_slot}
{\the\x_width}
{\the\bbox_ury}
{\the\a_count}
{\the\result}
}
\out_line{
\string\setglyphbb{\char_name}
{\the\bbox_llx}{\the\bbox_lly}{\the\bbox_urx}{\the\bbox_ury}
}
}
% Make sure \setglyphbb is transformed OK.
% Slanting of course cannot be done exactly when only the bbox
% is known.
\def\mtxtomtx_setglyphbb#1#2#3#4#5{
\eval_expr_to\a_count{\add{
\scale{#2}{\int{x-scale}}
}{
\scale{#3}{\int{slant-scale}}
}}
\eval_expr_to\b_count{\scale{#3}{\int{y-scale}}}
\eval_expr_to\c_count{\add{
\scale{#4}{\int{x-scale}}
}{
\scale{#5}{\int{slant-scale}}
}}
\eval_expr_to\d_count{\scale{#5}{\int{y-scale}}}
\out_line{
\string\setglyphbb{#1}
{\the\a_count}{\the\b_count}{\the\c_count}{\the\d_count}
}
}
\add_to\mtxtomtx_redefinitions{
\let\setglyphbb=\mtxtomtx_setglyphbb
}
% Finally, for completeness, the analogous thing for reglyphing.
\def\reglyph_setglyphbb#1#2#3#4#5{
\command_survivance=0
\def\glyphname{#1}
\csname slots-#1\endcsname
\iftokeep\command_survivance\then
\out_line{
\string\setglyphbb{\glyphname}{#2}{#3}{#4}{#5}
}
\fi
}
\add_to\reglyph_redefinitions{
\let\setglyphbb=\reglyph_setglyphbb
}
\normalcc
\endinput
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