| 1 |
/* Copyright (c) 1987 Regents of the University of California */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* x10.c - driver for X-windows version 10.4 |
| 9 |
* |
| 10 |
* 5/7/87 |
| 11 |
*/ |
| 12 |
|
| 13 |
#include <stdio.h> |
| 14 |
|
| 15 |
#include <sys/ioctl.h> |
| 16 |
|
| 17 |
#include <X/Xlib.h> |
| 18 |
#include <X/cursors/bcross.cursor> |
| 19 |
#include <X/cursors/bcross_mask.cursor> |
| 20 |
|
| 21 |
#include "color.h" |
| 22 |
|
| 23 |
#include "driver.h" |
| 24 |
|
| 25 |
#include "xtwind.h" |
| 26 |
|
| 27 |
#define GAMMA 2.2 /* exponent for color correction */ |
| 28 |
|
| 29 |
#define BORWIDTH 5 /* border width */ |
| 30 |
#define COMHEIGHT (COMLH*COMCH) /* command line height (pixels) */ |
| 31 |
#define MINWIDTH (32*COMCW) /* minimum graphics window width */ |
| 32 |
#define MINHEIGHT 64 /* minimum graphics window height */ |
| 33 |
|
| 34 |
#define COMFN "8x13" /* command line font name */ |
| 35 |
#define COMLH 3 /* number of command lines */ |
| 36 |
#define COMCW 8 /* approx. character width (pixels) */ |
| 37 |
#define COMCH 13 /* approx. character height (pixels) */ |
| 38 |
|
| 39 |
#ifndef WFLUSH |
| 40 |
#define WFLUSH 30 /* flush after this many rays */ |
| 41 |
#endif |
| 42 |
|
| 43 |
#define checkinp() while (XPending() > 0) getevent() |
| 44 |
|
| 45 |
#define levptr(etype) ((etype *)&thisevent) |
| 46 |
|
| 47 |
static XEvent thisevent; /* current event */ |
| 48 |
|
| 49 |
static int ncolors = 0; /* color table size */ |
| 50 |
static int *pixval; /* allocated pixel values */ |
| 51 |
|
| 52 |
static Display *ourdisplay = NULL; /* our display */ |
| 53 |
|
| 54 |
static Window gwind = 0; /* our graphics window */ |
| 55 |
|
| 56 |
static Cursor pickcursor = 0; /* cursor used for picking */ |
| 57 |
|
| 58 |
static int gwidth, gheight; /* graphics window size */ |
| 59 |
|
| 60 |
static TEXTWIND *comline = NULL; /* our command line */ |
| 61 |
|
| 62 |
static char c_queue[64]; /* input queue */ |
| 63 |
static int c_first = 0; /* first character in queue */ |
| 64 |
static int c_last = 0; /* last character in queue */ |
| 65 |
|
| 66 |
extern char *malloc(), *getcombuf(); |
| 67 |
|
| 68 |
extern char *progname; |
| 69 |
|
| 70 |
int x_close(), x_clear(), x_paintr(), x_errout(), |
| 71 |
x_getcur(), x_comout(), x_comin(); |
| 72 |
|
| 73 |
static struct driver x_driver = { |
| 74 |
x_close, x_clear, x_paintr, x_getcur, |
| 75 |
x_comout, x_comin, 1.0 |
| 76 |
}; |
| 77 |
|
| 78 |
|
| 79 |
struct driver * |
| 80 |
x_init(name, id) /* initialize driver */ |
| 81 |
char *name, *id; |
| 82 |
{ |
| 83 |
char defgeom[32]; |
| 84 |
OpaqueFrame mainframe; |
| 85 |
|
| 86 |
ourdisplay = XOpenDisplay(NULL); |
| 87 |
if (ourdisplay == NULL) { |
| 88 |
stderr_v("cannot open X-windows; DISPLAY variable set?\n"); |
| 89 |
return(NULL); |
| 90 |
} |
| 91 |
if (DisplayPlanes() < 4) { |
| 92 |
stderr_v("not enough colors\n"); |
| 93 |
return(NULL); |
| 94 |
} |
| 95 |
make_gmap(GAMMA); /* make color map */ |
| 96 |
|
| 97 |
pickcursor = XCreateCursor(bcross_width, bcross_height, |
| 98 |
bcross_bits, bcross_mask_bits, |
| 99 |
bcross_x_hot, bcross_y_hot, |
| 100 |
BlackPixel, WhitePixel, GXcopy); |
| 101 |
mainframe.bdrwidth = BORWIDTH; |
| 102 |
mainframe.border = BlackPixmap; |
| 103 |
mainframe.background = BlackPixmap; |
| 104 |
sprintf(defgeom, "=%dx%d+0+22", DisplayWidth()-(2*BORWIDTH), |
| 105 |
DisplayHeight()-(2*BORWIDTH+22)); |
| 106 |
gwind = XCreate("X10 display driver", progname, NULL, defgeom, |
| 107 |
&mainframe, MINWIDTH, MINHEIGHT+COMHEIGHT); |
| 108 |
if (gwind == 0) { |
| 109 |
stderr_v("can't create window\n"); |
| 110 |
return(NULL); |
| 111 |
} |
| 112 |
XStoreName(gwind, id); |
| 113 |
XSelectInput(gwind, KeyPressed|ButtonPressed| |
| 114 |
ExposeWindow|ExposeRegion|UnmapWindow); |
| 115 |
gwidth = mainframe.width; |
| 116 |
gheight = mainframe.height-COMHEIGHT; |
| 117 |
x_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth; |
| 118 |
x_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight; |
| 119 |
x_driver.inpready = 0; |
| 120 |
cmdvec = x_comout; /* set error vectors */ |
| 121 |
if (wrnvec != NULL) |
| 122 |
wrnvec = x_errout; |
| 123 |
return(&x_driver); |
| 124 |
} |
| 125 |
|
| 126 |
|
| 127 |
static |
| 128 |
x_close() /* close our display */ |
| 129 |
{ |
| 130 |
cmdvec = NULL; /* reset error vectors */ |
| 131 |
if (wrnvec != NULL) |
| 132 |
wrnvec = stderr_v; |
| 133 |
if (ourdisplay == NULL) |
| 134 |
return; |
| 135 |
if (comline != NULL) { |
| 136 |
xt_close(comline); |
| 137 |
comline = NULL; |
| 138 |
} |
| 139 |
if (gwind != 0) { |
| 140 |
XDestroyWindow(gwind); |
| 141 |
gwind = 0; |
| 142 |
} |
| 143 |
XFreeCursor(pickcursor); |
| 144 |
freepixels(); |
| 145 |
XCloseDisplay(ourdisplay); |
| 146 |
ourdisplay = NULL; |
| 147 |
} |
| 148 |
|
| 149 |
|
| 150 |
static |
| 151 |
x_clear(xres, yres) /* clear our display */ |
| 152 |
int xres, yres; |
| 153 |
{ |
| 154 |
if (xres != gwidth || yres != gheight) { /* new window */ |
| 155 |
if (comline != NULL) |
| 156 |
xt_close(comline); |
| 157 |
XChangeWindow(gwind, xres, yres+COMHEIGHT); |
| 158 |
comline = xt_open(gwind, 0, yres, xres, COMHEIGHT, 0, COMFN); |
| 159 |
if (comline == NULL) { |
| 160 |
stderr_v("Cannot open command line window\n"); |
| 161 |
quit(1); |
| 162 |
} |
| 163 |
gwidth = xres; |
| 164 |
gheight = yres; |
| 165 |
} else /* just clear */ |
| 166 |
XClear(gwind); |
| 167 |
/* reinitialize color table */ |
| 168 |
if (getpixels() == 0) |
| 169 |
stderr_v("cannot allocate colors\n"); |
| 170 |
else |
| 171 |
new_ctab(ncolors); |
| 172 |
|
| 173 |
XMapWindow(gwind); /* make sure it's mapped */ |
| 174 |
XSync(1); /* discard input */ |
| 175 |
return; |
| 176 |
} |
| 177 |
|
| 178 |
|
| 179 |
static |
| 180 |
x_paintr(col, xmin, ymin, xmax, ymax) /* fill a rectangle */ |
| 181 |
COLOR col; |
| 182 |
int xmin, ymin, xmax, ymax; |
| 183 |
{ |
| 184 |
extern long nrays; /* global ray count */ |
| 185 |
extern int xnewcolr(); /* pixel assignment routine */ |
| 186 |
static long lastflush = 0; /* ray count at last flush */ |
| 187 |
|
| 188 |
if (ncolors > 0) { |
| 189 |
XPixSet(gwind, xmin, gheight-ymax, xmax-xmin, ymax-ymin, |
| 190 |
pixval[get_pixel(col, xnewcolr)]); |
| 191 |
} |
| 192 |
if (nrays - lastflush >= WFLUSH) { |
| 193 |
if (ncolors <= 0) /* output necessary for death */ |
| 194 |
XPixSet(gwind,0,0,1,1,BlackPixel); |
| 195 |
checkinp(); |
| 196 |
lastflush = nrays; |
| 197 |
} |
| 198 |
} |
| 199 |
|
| 200 |
|
| 201 |
static |
| 202 |
x_comin(inp, prompt) /* read in a command line */ |
| 203 |
char *inp, *prompt; |
| 204 |
{ |
| 205 |
int x_getc(), x_comout(); |
| 206 |
|
| 207 |
if (prompt != NULL) |
| 208 |
if (fromcombuf(inp, &x_driver)) |
| 209 |
return; |
| 210 |
else |
| 211 |
xt_puts(prompt, comline); |
| 212 |
xt_cursor(comline, TBLKCURS); |
| 213 |
editline(inp, x_getc, x_comout); |
| 214 |
xt_cursor(comline, TNOCURS); |
| 215 |
} |
| 216 |
|
| 217 |
|
| 218 |
static |
| 219 |
x_comout(out) /* output a string to command line */ |
| 220 |
char *out; |
| 221 |
{ |
| 222 |
if (comline != NULL) |
| 223 |
xt_puts(out, comline); |
| 224 |
XFlush(); |
| 225 |
} |
| 226 |
|
| 227 |
|
| 228 |
static |
| 229 |
x_errout(msg) /* output an error message */ |
| 230 |
char *msg; |
| 231 |
{ |
| 232 |
x_comout(msg); |
| 233 |
stderr_v(msg); /* send to stderr also! */ |
| 234 |
} |
| 235 |
|
| 236 |
|
| 237 |
static int |
| 238 |
x_getcur(xp, yp) /* get cursor position */ |
| 239 |
int *xp, *yp; |
| 240 |
{ |
| 241 |
while (XGrabMouse(gwind, pickcursor, ButtonPressed) == 0) |
| 242 |
sleep(1); |
| 243 |
XFocusKeyboard(gwind); |
| 244 |
do |
| 245 |
getevent(); |
| 246 |
while (c_last <= c_first && levptr(XEvent)->type != ButtonPressed); |
| 247 |
*xp = levptr(XKeyOrButtonEvent)->x; |
| 248 |
*yp = gheight-1 - levptr(XKeyOrButtonEvent)->y; |
| 249 |
XFocusKeyboard(RootWindow); |
| 250 |
XUngrabMouse(); |
| 251 |
XFlush(); /* insure release */ |
| 252 |
if (c_last > c_first) /* key pressed */ |
| 253 |
return(x_getc()); |
| 254 |
/* button pressed */ |
| 255 |
switch (levptr(XKeyOrButtonEvent)->detail & 0377) { |
| 256 |
case LeftButton: |
| 257 |
return(MB1); |
| 258 |
case MiddleButton: |
| 259 |
return(MB2); |
| 260 |
case RightButton: |
| 261 |
return(MB3); |
| 262 |
} |
| 263 |
return(ABORT); |
| 264 |
} |
| 265 |
|
| 266 |
|
| 267 |
static |
| 268 |
xnewcolr(ndx, r, g, b) /* enter a color into hardware table */ |
| 269 |
int ndx; |
| 270 |
int r, g, b; |
| 271 |
{ |
| 272 |
Color xcolor; |
| 273 |
|
| 274 |
xcolor.pixel = pixval[ndx]; |
| 275 |
xcolor.red = r << 8; |
| 276 |
xcolor.green = g << 8; |
| 277 |
xcolor.blue = b << 8; |
| 278 |
|
| 279 |
XStoreColor(&xcolor); |
| 280 |
} |
| 281 |
|
| 282 |
|
| 283 |
static int |
| 284 |
getpixels() /* get the color map */ |
| 285 |
{ |
| 286 |
int planes; |
| 287 |
|
| 288 |
if (ncolors > 0) |
| 289 |
return(ncolors); |
| 290 |
for (ncolors=(1<<DisplayPlanes())-3; ncolors>12; ncolors=ncolors*.937){ |
| 291 |
pixval = (int *)malloc(ncolors*sizeof(int)); |
| 292 |
if (pixval == NULL) |
| 293 |
break; |
| 294 |
if (XGetColorCells(0,ncolors,0,&planes,pixval) != 0) |
| 295 |
return(ncolors); |
| 296 |
free((char *)pixval); |
| 297 |
} |
| 298 |
return(ncolors = 0); |
| 299 |
} |
| 300 |
|
| 301 |
|
| 302 |
static |
| 303 |
freepixels() /* free our pixels */ |
| 304 |
{ |
| 305 |
if (ncolors == 0) |
| 306 |
return; |
| 307 |
XFreeColors(pixval, ncolors, 0); |
| 308 |
free((char *)pixval); |
| 309 |
ncolors = 0; |
| 310 |
} |
| 311 |
|
| 312 |
|
| 313 |
static int |
| 314 |
x_getc() /* get a command character */ |
| 315 |
{ |
| 316 |
while (c_last <= c_first) { |
| 317 |
c_first = c_last = 0; /* reset */ |
| 318 |
getevent(); /* wait for key */ |
| 319 |
} |
| 320 |
x_driver.inpready--; |
| 321 |
return(c_queue[c_first++]); |
| 322 |
} |
| 323 |
|
| 324 |
|
| 325 |
static |
| 326 |
getevent() /* get next event */ |
| 327 |
{ |
| 328 |
XNextEvent(levptr(XEvent)); |
| 329 |
switch (levptr(XEvent)->type) { |
| 330 |
case KeyPressed: |
| 331 |
getkey(levptr(XKeyPressedEvent)); |
| 332 |
break; |
| 333 |
case ExposeWindow: |
| 334 |
windowchange(levptr(XExposeEvent)); |
| 335 |
break; |
| 336 |
case ExposeRegion: |
| 337 |
fixwindow(levptr(XExposeEvent)); |
| 338 |
break; |
| 339 |
case UnmapWindow: |
| 340 |
if (levptr(XUnmapEvent)->subwindow == 0) |
| 341 |
freepixels(); |
| 342 |
break; |
| 343 |
case ButtonPressed: /* handled in x_getcur() */ |
| 344 |
break; |
| 345 |
} |
| 346 |
} |
| 347 |
|
| 348 |
|
| 349 |
static |
| 350 |
windowchange(eexp) /* process window change event */ |
| 351 |
register XExposeEvent *eexp; |
| 352 |
{ |
| 353 |
if (eexp->subwindow != 0) { |
| 354 |
fixwindow(eexp); |
| 355 |
return; |
| 356 |
} |
| 357 |
/* check for change in size */ |
| 358 |
if (eexp->width != gwidth || eexp->height-COMHEIGHT != gheight) { |
| 359 |
gwidth = eexp->width; |
| 360 |
gheight = eexp->height-COMHEIGHT; |
| 361 |
x_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth; |
| 362 |
x_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight; |
| 363 |
strcpy(getcombuf(&x_driver), "new\n"); |
| 364 |
return; |
| 365 |
} |
| 366 |
/* remap colors */ |
| 367 |
if (getpixels() == 0) { |
| 368 |
stderr_v("cannot allocate colors\n"); |
| 369 |
return; |
| 370 |
} |
| 371 |
new_ctab(ncolors); |
| 372 |
/* redraw */ |
| 373 |
fixwindow(eexp); |
| 374 |
} |
| 375 |
|
| 376 |
|
| 377 |
static |
| 378 |
getkey(ekey) /* get input key */ |
| 379 |
register XKeyPressedEvent *ekey; |
| 380 |
{ |
| 381 |
int n; |
| 382 |
register char *str; |
| 383 |
|
| 384 |
str = XLookupMapping(ekey, &n); |
| 385 |
while (n-- > 0 && c_last < sizeof(c_queue)) { |
| 386 |
c_queue[c_last++] = *str++; |
| 387 |
x_driver.inpready++; |
| 388 |
} |
| 389 |
} |
| 390 |
|
| 391 |
|
| 392 |
static |
| 393 |
fixwindow(eexp) /* repair damage to window */ |
| 394 |
register XExposeEvent *eexp; |
| 395 |
{ |
| 396 |
if (eexp->subwindow == 0) |
| 397 |
sprintf(getcombuf(&x_driver), "repaint %d %d %d %d\n", |
| 398 |
eexp->x, gheight - eexp->y - eexp->height, |
| 399 |
eexp->x + eexp->width, gheight - eexp->y); |
| 400 |
else if (eexp->subwindow == comline->w) |
| 401 |
xt_redraw(comline); |
| 402 |
} |
