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#include "standard.h" |
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15 |
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#include <signal.h> |
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#include "color.h" |
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#include "driver.h" |
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#define DEVPATH getenv("PATH") /* device search path */ |
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#endif |
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#ifndef DELAY |
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#define DELAY 20 /* seconds to wait for response */ |
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#endif |
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|
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#ifndef BSD |
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#define vfork fork |
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#endif |
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#ifndef WFLUSH |
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#define WFLUSH 30 /* flush after this many rays */ |
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#endif |
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|
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extern char *getpath(), *getenv(); |
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|
33 |
< |
int onsigio(); |
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> |
static int comm_close(), comm_clear(), comm_paintr(), comm_errout(), |
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> |
comm_getcur(), comm_comout(), comm_comin(), comm_flush(); |
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|
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< |
int comm_close(), comm_clear(), comm_paintr(), comm_errout(), |
38 |
< |
comm_getcur(), comm_comout(), comm_comin(); |
39 |
< |
|
40 |
< |
struct driver comm_driver, comm_default = { |
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> |
struct driver comm_driver = { |
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comm_close, comm_clear, comm_paintr, comm_getcur, |
38 |
< |
comm_comout, comm_comin |
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> |
comm_comout, comm_comin, comm_flush |
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}; |
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|
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FILE *devin, *devout; |
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goto syserr; |
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if ((devin = fdopen(p2[0], "r")) == NULL) |
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goto syserr; |
79 |
< |
copystruct(&comm_driver, &comm_default); |
84 |
< |
/* verify & get resolution */ |
79 |
> |
/* verify initialization */ |
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putw(COM_SENDM, devout); |
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fflush(devout); |
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if (getw(devin) != COM_RECVM) |
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return(NULL); |
84 |
< |
fread((char *)&comm_driver.pixaspect, |
85 |
< |
sizeof(comm_driver.pixaspect), 1, devin); |
91 |
< |
comm_driver.xsiz = getw(devin); |
92 |
< |
comm_driver.ysiz = getw(devin); |
93 |
< |
/* input handling */ |
94 |
< |
signal(SIGIO, onsigio); |
84 |
> |
/* get driver parameters */ |
85 |
> |
getstate(); |
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/* set error vectors */ |
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cmdvec = comm_comout; |
88 |
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if (wrnvec != NULL) |
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cmdvec = NULL; /* reset error vectors */ |
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if (wrnvec != NULL) |
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wrnvec = stderr_v; |
114 |
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signal(SIGIO, SIG_DFL); |
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fclose(devout); |
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fclose(devin); |
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while ((pid = wait(0)) != -1 && pid != devchild) |
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COLOR col; |
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int xmin, ymin, xmax, ymax; |
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{ |
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extern long nrays; /* number of rays traced */ |
139 |
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static long lastflush = 0; /* ray count at last flush */ |
140 |
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|
128 |
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putc(COM_PAINTR, devout); |
129 |
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fwrite((char *)col, sizeof(COLOR), 1, devout); |
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putw(xmin, devout); |
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putw(ymin, devout); |
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putw(xmax, devout); |
133 |
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putw(ymax, devout); |
147 |
– |
if (nrays - lastflush >= WFLUSH) { |
148 |
– |
fflush(devout); |
149 |
– |
lastflush = nrays; |
150 |
– |
} |
134 |
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} |
135 |
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|
136 |
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|
137 |
+ |
static |
138 |
+ |
comm_flush() /* flush output to driver */ |
139 |
+ |
{ |
140 |
+ |
putc(COM_FLUSH, devout); |
141 |
+ |
fflush(devout); |
142 |
+ |
if (getc(devin) != COM_FLUSH) |
143 |
+ |
reply_error("flush"); |
144 |
+ |
getstate(); |
145 |
+ |
} |
146 |
+ |
|
147 |
+ |
|
148 |
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static int |
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comm_getcur(xp, yp) /* get and return cursor position */ |
150 |
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int *xp, *yp; |
168 |
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{ |
169 |
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putc(COM_COMOUT, devout); |
170 |
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myputs(str, devout); |
177 |
– |
fflush(devout); |
171 |
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} |
172 |
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|
173 |
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|
174 |
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static |
175 |
< |
comm_comin(buf) /* read string from command line */ |
175 |
> |
comm_comin(buf, prompt) /* read string from command line */ |
176 |
|
char *buf; |
177 |
+ |
char *prompt; |
178 |
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{ |
179 |
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putc(COM_COMIN, devout); |
180 |
+ |
if (prompt == NULL) |
181 |
+ |
putc(0, devout); |
182 |
+ |
else { |
183 |
+ |
putc(1, devout); |
184 |
+ |
myputs(prompt, devout); |
185 |
+ |
} |
186 |
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fflush(devout); |
187 |
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if (getc(devin) != COM_COMIN) |
188 |
|
reply_error("comin"); |
189 |
|
mygets(buf, devin); |
190 |
< |
if (comm_driver.inpready > 0) |
191 |
< |
comm_driver.inpready--; |
190 |
> |
getstate(); |
191 |
|
} |
192 |
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193 |
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236 |
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|
237 |
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|
238 |
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static |
239 |
< |
onsigio() /* input ready */ |
239 |
> |
getstate() /* get driver state variables */ |
240 |
|
{ |
241 |
< |
comm_driver.inpready++; |
241 |
> |
fread((char *)&comm_driver.pixaspect, |
242 |
> |
sizeof(comm_driver.pixaspect), 1, devin); |
243 |
> |
comm_driver.xsiz = getw(devin); |
244 |
> |
comm_driver.ysiz = getw(devin); |
245 |
> |
comm_driver.inpready = getw(devin); |
246 |
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} |