| 1 |
/* Copyright (c) 1995 Regents of the University of California */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* x11.c - driver for X-windows version 11 |
| 9 |
* |
| 10 |
* Jan 1990 |
| 11 |
*/ |
| 12 |
|
| 13 |
#include <stdio.h> |
| 14 |
#include <math.h> |
| 15 |
#include <sys/ioctl.h> |
| 16 |
#include <fcntl.h> |
| 17 |
#ifdef sparc |
| 18 |
#include <sys/conf.h> |
| 19 |
#include <sys/file.h> |
| 20 |
#include <sys/filio.h> |
| 21 |
#endif |
| 22 |
#if !defined(FNDELAY) && defined(O_NONBLOCK) |
| 23 |
#define FNDELAY O_NONBLOCK |
| 24 |
#endif |
| 25 |
|
| 26 |
#include <X11/Xlib.h> |
| 27 |
#include <X11/cursorfont.h> |
| 28 |
#include <X11/Xutil.h> |
| 29 |
|
| 30 |
#include "color.h" |
| 31 |
#include "driver.h" |
| 32 |
#include "x11twind.h" |
| 33 |
#include "x11icon.h" |
| 34 |
|
| 35 |
#define GAMMA 2.2 /* default exponent correction */ |
| 36 |
|
| 37 |
#define MINWIDTH (32*COMCW) /* minimum graphics window width */ |
| 38 |
#define MINHEIGHT (MINWIDTH/2) /* minimum graphics window height */ |
| 39 |
|
| 40 |
#define BORWIDTH 5 /* border width */ |
| 41 |
#define COMHEIGHT (COMLH*COMCH) /* command line height (pixels) */ |
| 42 |
|
| 43 |
#define COMFN "8x13" /* command line font name */ |
| 44 |
#define COMLH 3 /* number of command lines */ |
| 45 |
#define COMCW 8 /* approx. character width (pixels) */ |
| 46 |
#define COMCH 14 /* approx. character height (pixels) */ |
| 47 |
|
| 48 |
#define ourscreen DefaultScreen(ourdisplay) |
| 49 |
#define ourroot RootWindow(ourdisplay,ourscreen) |
| 50 |
|
| 51 |
#define levptr(etype) ((etype *)¤tevent) |
| 52 |
|
| 53 |
static XEvent currentevent; /* current event */ |
| 54 |
|
| 55 |
static int ncolors = 0; /* color table size */ |
| 56 |
static int mapped = 0; /* window is mapped? */ |
| 57 |
static unsigned long *pixval = NULL; /* allocated pixels */ |
| 58 |
static unsigned long ourblack=0, ourwhite=1; |
| 59 |
|
| 60 |
static Display *ourdisplay = NULL; /* our display */ |
| 61 |
|
| 62 |
static XVisualInfo ourvinfo; /* our visual information */ |
| 63 |
|
| 64 |
static Window gwind = 0; /* our graphics window */ |
| 65 |
|
| 66 |
static Cursor pickcursor = 0; /* cursor used for picking */ |
| 67 |
|
| 68 |
static int gwidth, gheight; /* graphics window size */ |
| 69 |
|
| 70 |
static int comheight; /* desired comline height */ |
| 71 |
static TEXTWIND *comline = NULL; /* our command line */ |
| 72 |
|
| 73 |
static char c_queue[64]; /* input queue */ |
| 74 |
static int c_first = 0; /* first character in queue */ |
| 75 |
static int c_last = 0; /* last character in queue */ |
| 76 |
|
| 77 |
static GC ourgc = 0; /* our graphics context for drawing */ |
| 78 |
|
| 79 |
static Colormap ourmap = 0; /* our color map */ |
| 80 |
|
| 81 |
#define IC_X11 0 |
| 82 |
#define IC_IOCTL 1 |
| 83 |
#define IC_READ 2 |
| 84 |
|
| 85 |
static int inpcheck; /* whence to check input */ |
| 86 |
|
| 87 |
extern char *malloc(); |
| 88 |
|
| 89 |
static int x11_close(), x11_clear(), x11_paintr(), x11_errout(), |
| 90 |
x11_getcur(), x11_comout(), x11_comin(), x11_flush(); |
| 91 |
|
| 92 |
static int std_comin(), std_comout(); |
| 93 |
|
| 94 |
static struct driver x11_driver = { |
| 95 |
x11_close, x11_clear, x11_paintr, x11_getcur, |
| 96 |
NULL, NULL, x11_flush, 1.0 |
| 97 |
}; |
| 98 |
|
| 99 |
static int getpixels(), xnewcolr(), freepixels(), resizewindow(), |
| 100 |
getevent(), getkey(), fixwindow(), x11_getc(); |
| 101 |
static unsigned long true_pixel(); |
| 102 |
|
| 103 |
|
| 104 |
struct driver * |
| 105 |
x11_init(name, id) /* initialize driver */ |
| 106 |
char *name, *id; |
| 107 |
{ |
| 108 |
extern char *getenv(); |
| 109 |
char *gv; |
| 110 |
int nplanes; |
| 111 |
XSetWindowAttributes ourwinattr; |
| 112 |
XWMHints ourxwmhints; |
| 113 |
XSizeHints oursizhints; |
| 114 |
/* open display server */ |
| 115 |
ourdisplay = XOpenDisplay(NULL); |
| 116 |
if (ourdisplay == NULL) { |
| 117 |
stderr_v("cannot open X-windows; DISPLAY variable set?\n"); |
| 118 |
return(NULL); |
| 119 |
} |
| 120 |
/* find a usable visual */ |
| 121 |
nplanes = DisplayPlanes(ourdisplay, ourscreen); |
| 122 |
if (XMatchVisualInfo(ourdisplay,ourscreen, |
| 123 |
nplanes>12?nplanes:24,TrueColor,&ourvinfo) || |
| 124 |
XMatchVisualInfo(ourdisplay,ourscreen, |
| 125 |
nplanes>12?nplanes:24,DirectColor,&ourvinfo)) { |
| 126 |
ourblack = 0; |
| 127 |
ourwhite = ourvinfo.red_mask | |
| 128 |
ourvinfo.green_mask | |
| 129 |
ourvinfo.blue_mask ; |
| 130 |
} else { |
| 131 |
if (nplanes < 4) { |
| 132 |
stderr_v("not enough colors\n"); |
| 133 |
return(NULL); |
| 134 |
} |
| 135 |
if (!XMatchVisualInfo(ourdisplay,ourscreen, |
| 136 |
nplanes,PseudoColor,&ourvinfo) && |
| 137 |
!XMatchVisualInfo(ourdisplay,ourscreen, |
| 138 |
nplanes,GrayScale,&ourvinfo)) { |
| 139 |
stderr_v("unsupported visual type\n"); |
| 140 |
return(NULL); |
| 141 |
} |
| 142 |
ourblack = BlackPixel(ourdisplay,ourscreen); |
| 143 |
ourwhite = WhitePixel(ourdisplay,ourscreen); |
| 144 |
} |
| 145 |
/* set gamma */ |
| 146 |
if ((gv = XGetDefault(ourdisplay, "radiance", "gamma")) != NULL |
| 147 |
|| (gv = getenv("DISPLAY_GAMMA")) != NULL) |
| 148 |
make_gmap(atof(gv)); |
| 149 |
else |
| 150 |
make_gmap(GAMMA); |
| 151 |
/* X11 command line or no? */ |
| 152 |
if (!strcmp(name, "x11")) |
| 153 |
comheight = COMHEIGHT; |
| 154 |
else /* "x11d" */ { |
| 155 |
comheight = 0; |
| 156 |
#ifndef FNDELAY |
| 157 |
stderr_v("warning: x11d driver not fully functional on this machine\n"); |
| 158 |
#endif |
| 159 |
} |
| 160 |
/* open window */ |
| 161 |
ourwinattr.background_pixel = ourblack; |
| 162 |
ourwinattr.border_pixel = ourblack; |
| 163 |
/* this is stupid */ |
| 164 |
ourwinattr.colormap = XCreateColormap(ourdisplay, ourroot, |
| 165 |
ourvinfo.visual, AllocNone); |
| 166 |
gwind = XCreateWindow(ourdisplay, ourroot, 0, 0, |
| 167 |
DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH, |
| 168 |
DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH, |
| 169 |
BORWIDTH, ourvinfo.depth, InputOutput, ourvinfo.visual, |
| 170 |
CWBackPixel|CWBorderPixel|CWColormap, &ourwinattr); |
| 171 |
if (gwind == 0) { |
| 172 |
stderr_v("cannot create window\n"); |
| 173 |
return(NULL); |
| 174 |
} |
| 175 |
XStoreName(ourdisplay, gwind, id); |
| 176 |
/* create a cursor */ |
| 177 |
pickcursor = XCreateFontCursor(ourdisplay, XC_diamond_cross); |
| 178 |
ourgc = XCreateGC(ourdisplay, gwind, 0, NULL); |
| 179 |
ourxwmhints.flags = InputHint|IconPixmapHint; |
| 180 |
ourxwmhints.input = True; |
| 181 |
ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay, |
| 182 |
gwind, x11icon_bits, x11icon_width, x11icon_height); |
| 183 |
XSetWMHints(ourdisplay, gwind, &ourxwmhints); |
| 184 |
oursizhints.min_width = MINWIDTH; |
| 185 |
oursizhints.min_height = MINHEIGHT+comheight; |
| 186 |
oursizhints.flags = PMinSize; |
| 187 |
XSetNormalHints(ourdisplay, gwind, &oursizhints); |
| 188 |
XSelectInput(ourdisplay, gwind, ExposureMask); |
| 189 |
XMapWindow(ourdisplay, gwind); |
| 190 |
XWindowEvent(ourdisplay, gwind, ExposureMask, levptr(XEvent)); |
| 191 |
gwidth = levptr(XExposeEvent)->width; |
| 192 |
gheight = levptr(XExposeEvent)->height - comheight; |
| 193 |
x11_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth; |
| 194 |
x11_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight; |
| 195 |
x11_driver.inpready = 0; |
| 196 |
mapped = 1; |
| 197 |
/* set i/o vectors */ |
| 198 |
if (comheight) { |
| 199 |
x11_driver.comin = x11_comin; |
| 200 |
x11_driver.comout = x11_comout; |
| 201 |
cmdvec = x11_comout; |
| 202 |
if (wrnvec != NULL) |
| 203 |
wrnvec = x11_errout; |
| 204 |
inpcheck = IC_X11; |
| 205 |
} else { |
| 206 |
x11_driver.comin = std_comin; |
| 207 |
x11_driver.comout = std_comout; |
| 208 |
cmdvec = std_comout; |
| 209 |
inpcheck = IC_IOCTL; |
| 210 |
} |
| 211 |
return(&x11_driver); |
| 212 |
} |
| 213 |
|
| 214 |
|
| 215 |
static |
| 216 |
x11_close() /* close our display */ |
| 217 |
{ |
| 218 |
cmdvec = NULL; /* reset error vectors */ |
| 219 |
if (wrnvec != NULL) |
| 220 |
wrnvec = stderr_v; |
| 221 |
if (ourdisplay == NULL) |
| 222 |
return; |
| 223 |
if (comline != NULL) { |
| 224 |
xt_close(comline); |
| 225 |
comline = NULL; |
| 226 |
} |
| 227 |
freepixels(); |
| 228 |
XFreeGC(ourdisplay, ourgc); |
| 229 |
XDestroyWindow(ourdisplay, gwind); |
| 230 |
gwind = 0; |
| 231 |
ourgc = 0; |
| 232 |
XFreeCursor(ourdisplay, pickcursor); |
| 233 |
XCloseDisplay(ourdisplay); |
| 234 |
ourdisplay = NULL; |
| 235 |
} |
| 236 |
|
| 237 |
|
| 238 |
static |
| 239 |
x11_clear(xres, yres) /* clear our display */ |
| 240 |
int xres, yres; |
| 241 |
{ |
| 242 |
/* check limits */ |
| 243 |
if (xres < MINWIDTH) |
| 244 |
xres = MINWIDTH; |
| 245 |
if (yres < MINHEIGHT) |
| 246 |
yres = MINHEIGHT; |
| 247 |
/* resize window */ |
| 248 |
if (xres != gwidth || yres != gheight) { |
| 249 |
XSelectInput(ourdisplay, gwind, 0); |
| 250 |
XResizeWindow(ourdisplay, gwind, xres, yres+comheight); |
| 251 |
gwidth = xres; |
| 252 |
gheight = yres; |
| 253 |
XFlush(ourdisplay); |
| 254 |
sleep(2); /* wait for window manager */ |
| 255 |
XSync(ourdisplay, 1); /* discard input */ |
| 256 |
} |
| 257 |
XClearWindow(ourdisplay, gwind); |
| 258 |
/* reinitialize color table */ |
| 259 |
if (ourvinfo.class == PseudoColor || ourvinfo.class == GrayScale) |
| 260 |
if (getpixels() == 0) |
| 261 |
stderr_v("cannot allocate colors\n"); |
| 262 |
else |
| 263 |
new_ctab(ncolors); |
| 264 |
/* get new command line */ |
| 265 |
if (comline != NULL) |
| 266 |
xt_close(comline); |
| 267 |
if (comheight) { |
| 268 |
comline = xt_open(ourdisplay, gwind, 0, gheight, gwidth, |
| 269 |
comheight, 0, ourblack, ourwhite, COMFN); |
| 270 |
if (comline == NULL) { |
| 271 |
stderr_v("cannot open command line window\n"); |
| 272 |
quit(1); |
| 273 |
} |
| 274 |
XSelectInput(ourdisplay, comline->w, ExposureMask); |
| 275 |
/* remove earmuffs */ |
| 276 |
XSelectInput(ourdisplay, gwind, |
| 277 |
StructureNotifyMask|ExposureMask|KeyPressMask|ButtonPressMask); |
| 278 |
} else /* remove earmuffs */ |
| 279 |
XSelectInput(ourdisplay, gwind, |
| 280 |
StructureNotifyMask|ExposureMask|ButtonPressMask); |
| 281 |
} |
| 282 |
|
| 283 |
|
| 284 |
static |
| 285 |
x11_paintr(col, xmin, ymin, xmax, ymax) /* fill a rectangle */ |
| 286 |
COLOR col; |
| 287 |
int xmin, ymin, xmax, ymax; |
| 288 |
{ |
| 289 |
unsigned long pixel; |
| 290 |
|
| 291 |
if (!mapped) |
| 292 |
return; |
| 293 |
if (ncolors > 0) |
| 294 |
pixel = pixval[get_pixel(col, xnewcolr)]; |
| 295 |
else |
| 296 |
pixel = true_pixel(col); |
| 297 |
XSetForeground(ourdisplay, ourgc, pixel); |
| 298 |
XFillRectangle(ourdisplay, gwind, |
| 299 |
ourgc, xmin, gheight-ymax, xmax-xmin, ymax-ymin); |
| 300 |
} |
| 301 |
|
| 302 |
|
| 303 |
static |
| 304 |
x11_flush() /* flush output */ |
| 305 |
{ |
| 306 |
char buf[256]; |
| 307 |
int n; |
| 308 |
/* check for input */ |
| 309 |
XNoOp(ourdisplay); |
| 310 |
n = XPending(ourdisplay); /* from X server */ |
| 311 |
while (n-- > 0) |
| 312 |
getevent(); |
| 313 |
#ifdef FNDELAY |
| 314 |
if (inpcheck == IC_IOCTL) { /* from stdin */ |
| 315 |
#ifdef FIONREAD |
| 316 |
if (ioctl(fileno(stdin), FIONREAD, &n) < 0) { |
| 317 |
#else |
| 318 |
if (1) { |
| 319 |
#endif |
| 320 |
if (fcntl(fileno(stdin), F_SETFL, FNDELAY) < 0) { |
| 321 |
stderr_v("cannot change input mode\n"); |
| 322 |
quit(1); |
| 323 |
} |
| 324 |
inpcheck = IC_READ; |
| 325 |
} else |
| 326 |
x11_driver.inpready += n; |
| 327 |
} |
| 328 |
if (inpcheck == IC_READ) { |
| 329 |
n = read(fileno(stdin), buf, sizeof(buf)-1); |
| 330 |
if (n > 0) { |
| 331 |
buf[n] = '\0'; |
| 332 |
tocombuf(buf, &x11_driver); |
| 333 |
} |
| 334 |
} |
| 335 |
#endif |
| 336 |
} |
| 337 |
|
| 338 |
|
| 339 |
static |
| 340 |
x11_comin(inp, prompt) /* read in a command line */ |
| 341 |
char *inp, *prompt; |
| 342 |
{ |
| 343 |
if (prompt != NULL) { |
| 344 |
x11_flush(); /* make sure we get everything */ |
| 345 |
if (fromcombuf(inp, &x11_driver)) |
| 346 |
return; |
| 347 |
xt_puts(prompt, comline); |
| 348 |
} |
| 349 |
xt_cursor(comline, TBLKCURS); |
| 350 |
editline(inp, x11_getc, x11_comout); |
| 351 |
xt_cursor(comline, TNOCURS); |
| 352 |
} |
| 353 |
|
| 354 |
|
| 355 |
static |
| 356 |
x11_comout(outp) /* output a string to command line */ |
| 357 |
char *outp; |
| 358 |
{ |
| 359 |
if (comline == NULL) |
| 360 |
return; |
| 361 |
xt_puts(outp, comline); |
| 362 |
if (outp[strlen(outp)-1] == '\n') |
| 363 |
XFlush(ourdisplay); |
| 364 |
} |
| 365 |
|
| 366 |
|
| 367 |
static |
| 368 |
x11_errout(msg) /* output an error message */ |
| 369 |
char *msg; |
| 370 |
{ |
| 371 |
stderr_v(msg); /* send to stderr also! */ |
| 372 |
x11_comout(msg); |
| 373 |
} |
| 374 |
|
| 375 |
|
| 376 |
static |
| 377 |
std_comin(inp, prompt) /* read in command line from stdin */ |
| 378 |
char *inp, *prompt; |
| 379 |
{ |
| 380 |
extern char *gets(); |
| 381 |
|
| 382 |
if (prompt != NULL) { |
| 383 |
if (fromcombuf(inp, &x11_driver)) |
| 384 |
return; |
| 385 |
if (!x11_driver.inpready) |
| 386 |
std_comout(prompt); |
| 387 |
} |
| 388 |
#ifdef FNDELAY |
| 389 |
if (inpcheck == IC_READ) { /* turn off FNDELAY */ |
| 390 |
if (fcntl(fileno(stdin), F_SETFL, 0) < 0) { |
| 391 |
stderr_v("cannot change input mode\n"); |
| 392 |
quit(1); |
| 393 |
} |
| 394 |
inpcheck = IC_IOCTL; |
| 395 |
} |
| 396 |
#endif |
| 397 |
if (gets(inp) == NULL) { |
| 398 |
strcpy(inp, "quit"); |
| 399 |
return; |
| 400 |
} |
| 401 |
x11_driver.inpready -= strlen(inp) + 1; |
| 402 |
if (x11_driver.inpready < 0) |
| 403 |
x11_driver.inpready = 0; |
| 404 |
} |
| 405 |
|
| 406 |
|
| 407 |
static |
| 408 |
std_comout(outp) /* write out string to stdout */ |
| 409 |
char *outp; |
| 410 |
{ |
| 411 |
fputs(outp, stdout); |
| 412 |
fflush(stdout); |
| 413 |
} |
| 414 |
|
| 415 |
|
| 416 |
static int |
| 417 |
x11_getcur(xp, yp) /* get cursor position */ |
| 418 |
int *xp, *yp; |
| 419 |
{ |
| 420 |
while (XGrabPointer(ourdisplay, gwind, True, ButtonPressMask, |
| 421 |
GrabModeAsync, GrabModeAsync, None, pickcursor, |
| 422 |
CurrentTime) != GrabSuccess) |
| 423 |
sleep(2); |
| 424 |
|
| 425 |
do |
| 426 |
getevent(); |
| 427 |
while (c_last <= c_first && levptr(XEvent)->type != ButtonPress); |
| 428 |
*xp = levptr(XButtonPressedEvent)->x; |
| 429 |
*yp = gheight-1 - levptr(XButtonPressedEvent)->y; |
| 430 |
XUngrabPointer(ourdisplay, CurrentTime); |
| 431 |
XFlush(ourdisplay); /* insure release */ |
| 432 |
if (c_last > c_first) /* key pressed */ |
| 433 |
return(x11_getc()); |
| 434 |
/* button pressed */ |
| 435 |
if (levptr(XButtonPressedEvent)->button == Button1) |
| 436 |
return(MB1); |
| 437 |
if (levptr(XButtonPressedEvent)->button == Button2) |
| 438 |
return(MB2); |
| 439 |
if (levptr(XButtonPressedEvent)->button == Button3) |
| 440 |
return(MB3); |
| 441 |
return(ABORT); |
| 442 |
} |
| 443 |
|
| 444 |
|
| 445 |
static |
| 446 |
xnewcolr(ndx, r, g, b) /* enter a color into hardware table */ |
| 447 |
int ndx; |
| 448 |
int r, g, b; |
| 449 |
{ |
| 450 |
XColor xcolor; |
| 451 |
|
| 452 |
xcolor.pixel = pixval[ndx]; |
| 453 |
xcolor.red = r << 8; |
| 454 |
xcolor.green = g << 8; |
| 455 |
xcolor.blue = b << 8; |
| 456 |
xcolor.flags = DoRed|DoGreen|DoBlue; |
| 457 |
|
| 458 |
XStoreColor(ourdisplay, ourmap, &xcolor); |
| 459 |
} |
| 460 |
|
| 461 |
|
| 462 |
static int |
| 463 |
getpixels() /* get the color map */ |
| 464 |
{ |
| 465 |
XColor thiscolor; |
| 466 |
register int i, j; |
| 467 |
|
| 468 |
if (ncolors > 0) |
| 469 |
return(ncolors); |
| 470 |
if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) { |
| 471 |
ourmap = DefaultColormap(ourdisplay,ourscreen); |
| 472 |
goto loop; |
| 473 |
} |
| 474 |
newmap: |
| 475 |
ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone); |
| 476 |
loop: |
| 477 |
for (ncolors = ourvinfo.colormap_size; |
| 478 |
ncolors > ourvinfo.colormap_size/3; |
| 479 |
ncolors = ncolors*.937) { |
| 480 |
pixval = (unsigned long *)malloc(ncolors*sizeof(unsigned long)); |
| 481 |
if (pixval == NULL) |
| 482 |
return(ncolors = 0); |
| 483 |
if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,pixval,ncolors)) |
| 484 |
break; |
| 485 |
free((char *)pixval); |
| 486 |
pixval = NULL; |
| 487 |
} |
| 488 |
if (pixval == NULL) { |
| 489 |
if (ourmap == DefaultColormap(ourdisplay,ourscreen)) |
| 490 |
goto newmap; /* try it with our map */ |
| 491 |
else |
| 492 |
return(ncolors = 0); /* failed */ |
| 493 |
} |
| 494 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
| 495 |
for (i = 0; i < ncolors; i++) { /* reset black and white */ |
| 496 |
if (pixval[i] != ourblack && pixval[i] != ourwhite) |
| 497 |
continue; |
| 498 |
thiscolor.pixel = pixval[i]; |
| 499 |
thiscolor.flags = DoRed|DoGreen|DoBlue; |
| 500 |
XQueryColor(ourdisplay, |
| 501 |
DefaultColormap(ourdisplay,ourscreen), |
| 502 |
&thiscolor); |
| 503 |
XStoreColor(ourdisplay, ourmap, &thiscolor); |
| 504 |
for (j = i; j+1 < ncolors; j++) |
| 505 |
pixval[j] = pixval[j+1]; |
| 506 |
ncolors--; |
| 507 |
i--; |
| 508 |
} |
| 509 |
XSetWindowColormap(ourdisplay, gwind, ourmap); |
| 510 |
return(ncolors); |
| 511 |
} |
| 512 |
|
| 513 |
|
| 514 |
static |
| 515 |
freepixels() /* free our pixels */ |
| 516 |
{ |
| 517 |
if (ncolors == 0) |
| 518 |
return; |
| 519 |
XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L); |
| 520 |
free((char *)pixval); |
| 521 |
pixval = NULL; |
| 522 |
ncolors = 0; |
| 523 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
| 524 |
XFreeColormap(ourdisplay, ourmap); |
| 525 |
ourmap = 0; |
| 526 |
} |
| 527 |
|
| 528 |
|
| 529 |
static unsigned long |
| 530 |
true_pixel(col) /* return true pixel value for color */ |
| 531 |
COLOR col; |
| 532 |
{ |
| 533 |
unsigned long rval; |
| 534 |
BYTE rgb[3]; |
| 535 |
|
| 536 |
map_color(rgb, col); |
| 537 |
rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask; |
| 538 |
rval |= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask; |
| 539 |
rval |= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask; |
| 540 |
return(rval); |
| 541 |
} |
| 542 |
|
| 543 |
|
| 544 |
static int |
| 545 |
x11_getc() /* get a command character */ |
| 546 |
{ |
| 547 |
while (c_last <= c_first) { |
| 548 |
c_first = c_last = 0; /* reset */ |
| 549 |
getevent(); /* wait for key */ |
| 550 |
} |
| 551 |
x11_driver.inpready--; |
| 552 |
return(c_queue[c_first++]); |
| 553 |
} |
| 554 |
|
| 555 |
|
| 556 |
static |
| 557 |
getevent() /* get next event */ |
| 558 |
{ |
| 559 |
XNextEvent(ourdisplay, levptr(XEvent)); |
| 560 |
switch (levptr(XEvent)->type) { |
| 561 |
case ConfigureNotify: |
| 562 |
resizewindow(levptr(XConfigureEvent)); |
| 563 |
break; |
| 564 |
case UnmapNotify: |
| 565 |
mapped = 0; |
| 566 |
freepixels(); |
| 567 |
break; |
| 568 |
case MapNotify: |
| 569 |
if (ourvinfo.class == PseudoColor || |
| 570 |
ourvinfo.class == GrayScale) |
| 571 |
if (getpixels() == 0) |
| 572 |
stderr_v("cannot allocate colors\n"); |
| 573 |
else |
| 574 |
new_ctab(ncolors); |
| 575 |
mapped = 1; |
| 576 |
break; |
| 577 |
case Expose: |
| 578 |
fixwindow(levptr(XExposeEvent)); |
| 579 |
break; |
| 580 |
case KeyPress: |
| 581 |
getkey(levptr(XKeyPressedEvent)); |
| 582 |
break; |
| 583 |
case ButtonPress: |
| 584 |
break; |
| 585 |
} |
| 586 |
} |
| 587 |
|
| 588 |
|
| 589 |
static |
| 590 |
getkey(ekey) /* get input key */ |
| 591 |
register XKeyPressedEvent *ekey; |
| 592 |
{ |
| 593 |
register int n; |
| 594 |
|
| 595 |
n = XLookupString(ekey, c_queue+c_last, sizeof(c_queue)-c_last, |
| 596 |
NULL, NULL); |
| 597 |
c_last += n; |
| 598 |
x11_driver.inpready += n; |
| 599 |
} |
| 600 |
|
| 601 |
|
| 602 |
static |
| 603 |
fixwindow(eexp) /* repair damage to window */ |
| 604 |
register XExposeEvent *eexp; |
| 605 |
{ |
| 606 |
char buf[80]; |
| 607 |
|
| 608 |
if (eexp->window == gwind) { |
| 609 |
sprintf(buf, "repaint %d %d %d %d\n", |
| 610 |
eexp->x, gheight - eexp->y - eexp->height, |
| 611 |
eexp->x + eexp->width, gheight - eexp->y); |
| 612 |
tocombuf(buf, &x11_driver); |
| 613 |
} else if (eexp->window == comline->w) { |
| 614 |
if (eexp->count == 0) |
| 615 |
xt_redraw(comline); |
| 616 |
} |
| 617 |
} |
| 618 |
|
| 619 |
|
| 620 |
static |
| 621 |
resizewindow(ersz) /* resize window */ |
| 622 |
register XConfigureEvent *ersz; |
| 623 |
{ |
| 624 |
if (ersz->width == gwidth && ersz->height-comheight == gheight) |
| 625 |
return; |
| 626 |
|
| 627 |
gwidth = ersz->width; |
| 628 |
gheight = ersz->height-comheight; |
| 629 |
x11_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth; |
| 630 |
x11_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight; |
| 631 |
|
| 632 |
tocombuf("new\n", &x11_driver); |
| 633 |
} |
