21 |
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|
22 |
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#include "standard.h" |
23 |
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|
24 |
+ |
#include <signal.h> |
25 |
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#include <X11/Xlib.h> |
26 |
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#include <X11/cursorfont.h> |
27 |
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#include <X11/Xutil.h> |
72 |
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int xoff = 0; /* x image offset */ |
73 |
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int yoff = 0; /* y image offset */ |
74 |
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|
75 |
+ |
int parent = 0; /* number of children, -1 if child */ |
76 |
+ |
|
77 |
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VIEW ourview = STDVIEW; /* image view parameters */ |
78 |
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int gotview = 0; /* got parameters from file */ |
79 |
|
|
119 |
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Display *thedisplay; |
120 |
|
Atom closedownAtom, wmProtocolsAtom; |
121 |
|
|
122 |
+ |
int noop() {} |
123 |
|
|
124 |
+ |
|
125 |
|
main(argc, argv) |
126 |
|
int argc; |
127 |
|
char *argv[]; |
130 |
|
char *gv; |
131 |
|
int headline(); |
132 |
|
int i; |
133 |
+ |
int pid; |
134 |
|
|
135 |
|
progname = argv[0]; |
136 |
|
if ((gv = getenv("GAMMA")) != NULL) |
176 |
|
else |
177 |
|
break; |
178 |
|
|
179 |
< |
if (i == argc-1) { |
179 |
> |
if (i > argc) |
180 |
> |
goto userr; |
181 |
> |
while (i < argc-1) { |
182 |
> |
if ((pid=fork()) == 0) { /* a child for each picture */ |
183 |
> |
parent = -1; |
184 |
> |
break; |
185 |
> |
} |
186 |
> |
if (pid < 0) |
187 |
> |
quiterr("fork failed"); |
188 |
> |
parent++; |
189 |
> |
signal(SIGCONT, noop); |
190 |
> |
pause(); /* wait for wake-up call */ |
191 |
> |
i++; |
192 |
> |
} |
193 |
> |
if (i < argc) { /* open picture file */ |
194 |
|
fname = argv[i]; |
195 |
|
fin = fopen(fname, "r"); |
196 |
|
if (fin == NULL) { |
197 |
|
sprintf(errmsg, "cannot open file \"%s\"", fname); |
198 |
|
quiterr(errmsg); |
199 |
|
} |
200 |
< |
} else if (i != argc) |
181 |
< |
goto userr; |
200 |
> |
} |
201 |
|
/* get header */ |
202 |
|
getheader(fin, headline, NULL); |
203 |
|
/* get picture dimensions */ |
213 |
|
|
214 |
|
init(argc, argv); /* get file and open window */ |
215 |
|
|
216 |
+ |
if (parent < 0) |
217 |
+ |
kill(getppid(), SIGCONT); /* signal parent if child */ |
218 |
+ |
|
219 |
|
for ( ; ; ) |
220 |
|
getevent(); /* main loop */ |
221 |
|
userr: |
222 |
|
fprintf(stderr, |
223 |
< |
"Usage: %s [-di disp][[-ge] spec][-b][-m][-d][-f][-c nclrs][-e +/-stops] pic\n", |
223 |
> |
"Usage: %s [-di disp][[-ge] spec][-b][-m][-d][-f][-c nclrs][-e +/-stops] pic ..\n", |
224 |
|
progname); |
225 |
|
exit(1); |
226 |
|
} |
350 |
|
quiterr(err) /* print message and exit */ |
351 |
|
char *err; |
352 |
|
{ |
353 |
< |
if (err != NULL) { |
354 |
< |
fprintf(stderr, "%s: %s\n", progname, err); |
355 |
< |
exit(1); |
353 |
> |
if (err != NULL) |
354 |
> |
fprintf(stderr, "%s: %s: %s\n", progname, |
355 |
> |
fname==NULL?"<stdin>":fname, err); |
356 |
> |
if (wind) { |
357 |
> |
XDestroyWindow(thedisplay, wind); |
358 |
> |
XFlush(thedisplay); |
359 |
|
} |
360 |
< |
exit(0); |
360 |
> |
while (parent > 0 && wait(0) != -1) /* wait for any children */ |
361 |
> |
parent--; |
362 |
> |
exit(err != NULL); |
363 |
|
} |
364 |
|
|
365 |
|
|
563 |
|
else |
564 |
|
getbox(&xev.xbutton); |
565 |
|
break; |
566 |
< |
case ClientMessage: |
566 |
> |
case ClientMessage: |
567 |
|
if ((xev.xclient.message_type == wmProtocolsAtom) && |
568 |
|
(xev.xclient.data.l[0] == closedownAtom)) |
569 |
|
quiterr(NULL); |