blob: d06bc8f47c0167a9a135fa6e879d60df67d1b113 (
plain)
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
161
162
163
|
% 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
|
