17 |
|
|
18 |
|
extern char *libpath; /* list of library directories */ |
19 |
|
|
20 |
+ |
extern char *fgetword(); |
21 |
+ |
|
22 |
|
static FONT *fontlist = NULL; /* list of loaded fonts */ |
23 |
|
|
24 |
|
|
29 |
|
char buf[16]; |
30 |
|
FILE *fp; |
31 |
|
char *pathname, *err; |
32 |
+ |
unsigned wsum, hsum, ngly; |
33 |
|
int gn, ngv; |
34 |
|
register int gv; |
35 |
< |
register GLYPH *g; |
35 |
> |
register GLYPH *g; |
36 |
|
GORD *gp; |
37 |
|
register FONT *f; |
38 |
|
|
53 |
|
pathname); |
54 |
|
error(SYSTEM, errmsg); |
55 |
|
} |
56 |
+ |
wsum = hsum = ngly = 0; |
57 |
|
while (fgetword(buf,sizeof(buf),fp) != NULL) { /* get each glyph */ |
58 |
|
if (!isint(buf)) |
59 |
|
goto nonint; |
60 |
|
gn = atoi(buf); |
61 |
< |
if (gn < 0 || gn > 255) { |
61 |
> |
if (gn < 1 || gn > 255) { |
62 |
|
err = "illegal"; |
63 |
|
goto fonterr; |
64 |
|
} |
75 |
|
if (g == NULL) |
76 |
|
goto memerr; |
77 |
|
g->nverts = ngv; |
78 |
< |
g->start = g->width = 128; |
78 |
> |
g->left = g->right = g->top = g->bottom = 128; |
79 |
|
ngv *= 2; |
80 |
|
gp = gvlist(g); |
81 |
|
while (ngv--) { |
86 |
|
goto fonterr; |
87 |
|
} |
88 |
|
*gp++ = gv; |
89 |
< |
if (ngv & 1) /* follow x limits */ |
90 |
< |
if (gv < g->start) |
91 |
< |
g->start = gv; |
92 |
< |
else if (gv > g->width) |
93 |
< |
g->width = gv; |
89 |
> |
if (ngv & 1) { /* follow x limits */ |
90 |
> |
if (gv < g->left) |
91 |
> |
g->left = gv; |
92 |
> |
else if (gv > g->right) |
93 |
> |
g->right = gv; |
94 |
> |
} else { /* follow y limits */ |
95 |
> |
if (gv < g->bottom) |
96 |
> |
g->bottom = gv; |
97 |
> |
else if (gv > g->top) |
98 |
> |
g->top = gv; |
99 |
> |
} |
100 |
|
} |
101 |
< |
g->width -= g->start; |
101 |
> |
if (g->right - g->left && g->top - g->bottom) { |
102 |
> |
ngly++; |
103 |
> |
wsum += g->right - g->left; |
104 |
> |
hsum += g->top - g->bottom; |
105 |
> |
} |
106 |
|
f->fg[gn] = g; |
107 |
|
} |
108 |
|
fclose(fp); |
109 |
+ |
if (ngly) { |
110 |
+ |
f->mwidth = wsum / ngly; |
111 |
+ |
f->mheight = hsum / ngly; |
112 |
+ |
} |
113 |
|
f->next = fontlist; |
114 |
|
return(fontlist = f); |
115 |
|
nonint: |
121 |
|
error(USER, errmsg); |
122 |
|
memerr: |
123 |
|
error(SYSTEM, "out of memory in fontglyph"); |
124 |
+ |
} |
125 |
+ |
|
126 |
+ |
|
127 |
+ |
freefont(fname) /* free a font (free all if fname==NULL) */ |
128 |
+ |
char *fname; |
129 |
+ |
{ |
130 |
+ |
FONT head; |
131 |
+ |
register FONT *fl, *f; |
132 |
+ |
register int i; |
133 |
+ |
|
134 |
+ |
head.next = fontlist; |
135 |
+ |
fl = &head; |
136 |
+ |
while ((f = fl->next) != NULL) |
137 |
+ |
if (fname == NULL || !strcmp(fname, f->name)) { |
138 |
+ |
fl->next = f->next; |
139 |
+ |
for (i = 0; i < 256; i++) |
140 |
+ |
if (f->fg[i] != NULL) |
141 |
+ |
free((char *)f->fg[i]); |
142 |
+ |
freestr(f->name); |
143 |
+ |
free((char *)f); |
144 |
+ |
} else |
145 |
+ |
fl = f; |
146 |
+ |
fontlist = head.next; |
147 |
+ |
} |
148 |
+ |
|
149 |
+ |
|
150 |
+ |
int |
151 |
+ |
uniftext(sp, tp, f) /* uniformly space text line */ |
152 |
+ |
register short *sp; /* returned character spacing */ |
153 |
+ |
register char *tp; /* text line */ |
154 |
+ |
register FONT *f; /* font */ |
155 |
+ |
{ |
156 |
+ |
int linelen; |
157 |
+ |
|
158 |
+ |
linelen = *sp++ = 0; |
159 |
+ |
while (*tp) |
160 |
+ |
if (f->fg[*tp++&0xff] == NULL) |
161 |
+ |
*sp++ = 0; |
162 |
+ |
else |
163 |
+ |
linelen += *sp++ = 256; |
164 |
+ |
return(linelen); |
165 |
+ |
} |
166 |
+ |
|
167 |
+ |
|
168 |
+ |
int |
169 |
+ |
squeeztext(sp, tp, f, cis) /* squeeze text line */ |
170 |
+ |
short *sp; /* returned character spacing */ |
171 |
+ |
char *tp; /* text line */ |
172 |
+ |
FONT *f; /* font */ |
173 |
+ |
int cis; /* intercharacter spacing */ |
174 |
+ |
{ |
175 |
+ |
int linelen; |
176 |
+ |
register GLYPH *gp; |
177 |
+ |
|
178 |
+ |
linelen = 0; |
179 |
+ |
gp = NULL; |
180 |
+ |
while (*tp && (gp = f->fg[*tp++&0xff]) == NULL) |
181 |
+ |
*sp++ = 0; |
182 |
+ |
cis /= 2; |
183 |
+ |
*sp = cis; |
184 |
+ |
while (gp != NULL) { |
185 |
+ |
if (gp->nverts) { /* regular character */ |
186 |
+ |
linelen += *sp++ += cis - gp->left; |
187 |
+ |
*sp = gp->right + cis; |
188 |
+ |
} else { /* space */ |
189 |
+ |
linelen += *sp++; |
190 |
+ |
*sp = f->mwidth; |
191 |
+ |
} |
192 |
+ |
gp = NULL; |
193 |
+ |
while (*tp && (gp = f->fg[*tp++&0xff]) == NULL) { |
194 |
+ |
linelen += *sp++; |
195 |
+ |
*sp = 0; |
196 |
+ |
} |
197 |
+ |
} |
198 |
+ |
linelen += *sp += cis; |
199 |
+ |
return(linelen); |
200 |
+ |
} |
201 |
+ |
|
202 |
+ |
|
203 |
+ |
int |
204 |
+ |
proptext(sp, tp, f, cis, nsi) /* space line proportionally */ |
205 |
+ |
short *sp; /* returned character spacing */ |
206 |
+ |
char *tp; /* text line */ |
207 |
+ |
FONT *f; /* font */ |
208 |
+ |
int cis; /* target intercharacter spacing */ |
209 |
+ |
int nsi; /* minimum number of spaces for indent */ |
210 |
+ |
{ |
211 |
+ |
register char *end, *tab; |
212 |
+ |
GLYPH *gp; |
213 |
+ |
short *nsp; |
214 |
+ |
int alen, len, width; |
215 |
+ |
/* start by squeezing it */ |
216 |
+ |
squeeztext(sp, tp, f, cis); |
217 |
+ |
/* now, realign spacing */ |
218 |
+ |
width = *sp++; |
219 |
+ |
while (*tp) { |
220 |
+ |
len = alen = 0; |
221 |
+ |
nsp = sp; |
222 |
+ |
for (end = tp; *end; end = tab) { |
223 |
+ |
tab = end + 1; |
224 |
+ |
alen += *nsp++; |
225 |
+ |
if (f->fg[*end&0xff]) { |
226 |
+ |
while ((gp = f->fg[*tab&0xff]) != NULL && |
227 |
+ |
gp->nverts == 0) { /* tab in */ |
228 |
+ |
alen += *nsp++; |
229 |
+ |
tab++; |
230 |
+ |
} |
231 |
+ |
len += tab - end; |
232 |
+ |
} |
233 |
+ |
if (nsi && tab - end > nsi) |
234 |
+ |
break; |
235 |
+ |
} |
236 |
+ |
len *= f->mwidth + cis; /* compute target length */ |
237 |
+ |
width += len; |
238 |
+ |
len -= alen; /* necessary adjustment */ |
239 |
+ |
while (sp < nsp) { |
240 |
+ |
alen = len/(nsp-sp); |
241 |
+ |
*sp++ += alen; |
242 |
+ |
len -= alen; |
243 |
+ |
} |
244 |
+ |
tp = tab; |
245 |
+ |
} |
246 |
+ |
return(width); |
247 |
|
} |