| 1 |
/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ SGI"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* X11 driver for holodeck display. |
| 9 |
* Based on rview driver. |
| 10 |
*/ |
| 11 |
|
| 12 |
#include "standard.h" |
| 13 |
#include "rhd_qtree.h" |
| 14 |
|
| 15 |
#include <X11/Xlib.h> |
| 16 |
#include <X11/cursorfont.h> |
| 17 |
#include <X11/Xutil.h> |
| 18 |
|
| 19 |
#include "x11icon.h" |
| 20 |
|
| 21 |
#define CTRL(c) ((c)-'@') |
| 22 |
|
| 23 |
#define GAMMA 2.2 /* default gamma correction */ |
| 24 |
|
| 25 |
#define MOVPCT 10 /* percent distance to move */ |
| 26 |
#define MOVDIR(b) ((b)==Button1 ? 1 : (b)==Button2 ? 0 : -1) |
| 27 |
|
| 28 |
#define MINWIDTH 480 /* minimum graphics window width */ |
| 29 |
#define MINHEIGHT 400 /* minimum graphics window height */ |
| 30 |
|
| 31 |
#define VIEWDIST 356 /* assumed viewing distance (mm) */ |
| 32 |
|
| 33 |
#define BORWIDTH 5 /* border width */ |
| 34 |
|
| 35 |
#define ourscreen DefaultScreen(ourdisplay) |
| 36 |
#define ourroot RootWindow(ourdisplay,ourscreen) |
| 37 |
#define ourmask (StructureNotifyMask|ExposureMask|KeyPressMask|\ |
| 38 |
ButtonPressMask|ButtonReleaseMask) |
| 39 |
|
| 40 |
#define levptr(etype) ((etype *)¤tevent) |
| 41 |
|
| 42 |
struct driver odev; /* global device driver structure */ |
| 43 |
|
| 44 |
static XEvent currentevent; /* current event */ |
| 45 |
|
| 46 |
static int ncolors = 0; /* color table size */ |
| 47 |
static int mapped = 0; /* window is mapped? */ |
| 48 |
static unsigned long *pixval = NULL; /* allocated pixels */ |
| 49 |
static unsigned long ourblack=0, ourwhite=1; |
| 50 |
|
| 51 |
static Display *ourdisplay = NULL; /* our display */ |
| 52 |
static XVisualInfo ourvinfo; /* our visual information */ |
| 53 |
static Window gwind = 0; /* our graphics window */ |
| 54 |
static GC ourgc = 0; /* our graphics context for drawing */ |
| 55 |
static Colormap ourmap = 0; /* our color map */ |
| 56 |
|
| 57 |
static double pwidth, pheight; /* pixel dimensions (mm) */ |
| 58 |
|
| 59 |
static int inpresflags; /* input result flags */ |
| 60 |
|
| 61 |
static int headlocked = 0; /* lock vertical motion */ |
| 62 |
|
| 63 |
static int getpixels(), xnewcolr(), freepixels(), resizewindow(), |
| 64 |
getevent(), getkey(), moveview(), getmove(), fixwindow(); |
| 65 |
static unsigned long true_pixel(); |
| 66 |
|
| 67 |
|
| 68 |
static int |
| 69 |
mytmflags() /* figure out tone mapping flags */ |
| 70 |
{ |
| 71 |
extern char *progname; |
| 72 |
register char *cp, *tail; |
| 73 |
/* find basic name */ |
| 74 |
for (cp = tail = progname; *cp; cp++) |
| 75 |
if (*cp == '/') |
| 76 |
tail = cp+1; |
| 77 |
for (cp = tail; *cp && *cp != '.'; cp++) |
| 78 |
; |
| 79 |
if (cp-tail == 3 && !strncmp(tail, "x11", 3)) |
| 80 |
return(TM_F_CAMERA); |
| 81 |
if (cp-tail == 4 && !strncmp(tail, "x11h", 4)) |
| 82 |
return(TM_F_HUMAN); |
| 83 |
error(USER, "illegal driver name"); |
| 84 |
} |
| 85 |
|
| 86 |
|
| 87 |
dev_open(id) /* initialize X11 driver */ |
| 88 |
char *id; |
| 89 |
{ |
| 90 |
extern char *getenv(); |
| 91 |
char *gv; |
| 92 |
double gamval = GAMMA; |
| 93 |
int nplanes; |
| 94 |
XSetWindowAttributes ourwinattr; |
| 95 |
XWMHints ourxwmhints; |
| 96 |
XSizeHints oursizhints; |
| 97 |
/* set quadtree globals */ |
| 98 |
qtMinNodesiz = 2; |
| 99 |
/* open display server */ |
| 100 |
ourdisplay = XOpenDisplay(NULL); |
| 101 |
if (ourdisplay == NULL) |
| 102 |
error(USER, "cannot open X-windows; DISPLAY variable set?\n"); |
| 103 |
/* find a usable visual */ |
| 104 |
nplanes = DisplayPlanes(ourdisplay, ourscreen); |
| 105 |
if (XMatchVisualInfo(ourdisplay,ourscreen, |
| 106 |
nplanes>12?nplanes:24,TrueColor,&ourvinfo) || |
| 107 |
XMatchVisualInfo(ourdisplay,ourscreen, |
| 108 |
nplanes>12?nplanes:24,DirectColor,&ourvinfo)) { |
| 109 |
ourblack = 0; |
| 110 |
ourwhite = ourvinfo.red_mask | |
| 111 |
ourvinfo.green_mask | |
| 112 |
ourvinfo.blue_mask ; |
| 113 |
} else { |
| 114 |
if (nplanes < 4) |
| 115 |
error(INTERNAL, "not enough colors\n"); |
| 116 |
if (!XMatchVisualInfo(ourdisplay,ourscreen, |
| 117 |
nplanes,PseudoColor,&ourvinfo) && |
| 118 |
!XMatchVisualInfo(ourdisplay,ourscreen, |
| 119 |
nplanes,GrayScale,&ourvinfo)) |
| 120 |
error(INTERNAL, "unsupported visual type\n"); |
| 121 |
ourblack = BlackPixel(ourdisplay,ourscreen); |
| 122 |
ourwhite = WhitePixel(ourdisplay,ourscreen); |
| 123 |
} |
| 124 |
/* set gamma and tone mapping */ |
| 125 |
if ((gv = XGetDefault(ourdisplay, "radiance", "gamma")) != NULL |
| 126 |
|| (gv = getenv("DISPLAY_GAMMA")) != NULL) |
| 127 |
gamval = atof(gv); |
| 128 |
if (tmInit(mytmflags(), stdprims, gamval) == NULL) |
| 129 |
error(SYSTEM, "not enough memory in dev_open"); |
| 130 |
/* open window */ |
| 131 |
ourwinattr.background_pixel = ourblack; |
| 132 |
ourwinattr.border_pixel = ourblack; |
| 133 |
ourwinattr.event_mask = ourmask; |
| 134 |
/* this is stupid */ |
| 135 |
ourwinattr.colormap = XCreateColormap(ourdisplay, ourroot, |
| 136 |
ourvinfo.visual, AllocNone); |
| 137 |
gwind = XCreateWindow(ourdisplay, ourroot, 0, 0, |
| 138 |
DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH, |
| 139 |
DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH, |
| 140 |
BORWIDTH, ourvinfo.depth, InputOutput, ourvinfo.visual, |
| 141 |
CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &ourwinattr); |
| 142 |
if (gwind == 0) |
| 143 |
error(SYSTEM, "cannot create window\n"); |
| 144 |
XStoreName(ourdisplay, gwind, id); |
| 145 |
/* get graphics context */ |
| 146 |
ourgc = XCreateGC(ourdisplay, gwind, 0, NULL); |
| 147 |
/* set window manager hints */ |
| 148 |
ourxwmhints.flags = InputHint|IconPixmapHint; |
| 149 |
ourxwmhints.input = True; |
| 150 |
ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay, |
| 151 |
gwind, x11icon_bits, x11icon_width, x11icon_height); |
| 152 |
XSetWMHints(ourdisplay, gwind, &ourxwmhints); |
| 153 |
oursizhints.min_width = MINWIDTH; |
| 154 |
oursizhints.min_height = MINHEIGHT; |
| 155 |
oursizhints.flags = PMinSize; |
| 156 |
XSetNormalHints(ourdisplay, gwind, &oursizhints); |
| 157 |
/* map the window and get its size */ |
| 158 |
XMapWindow(ourdisplay, gwind); |
| 159 |
dev_input(); |
| 160 |
/* allocate our leaf pile */ |
| 161 |
if (!qtAllocLeaves(DisplayWidth(ourdisplay,ourscreen) * |
| 162 |
DisplayHeight(ourdisplay,ourscreen) / |
| 163 |
(qtMinNodesiz*qtMinNodesiz))) |
| 164 |
error(SYSTEM, "insufficient memory for leaf storage"); |
| 165 |
|
| 166 |
/* figure out sensible view */ |
| 167 |
pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) / |
| 168 |
DisplayWidth(ourdisplay, ourscreen); |
| 169 |
pheight = (double)DisplayHeightMM(ourdisplay, ourscreen) / |
| 170 |
DisplayHeight(ourdisplay, ourscreen); |
| 171 |
copystruct(&odev.v, &stdview); |
| 172 |
odev.name = id; |
| 173 |
odev.v.type = VT_PER; |
| 174 |
odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres); |
| 175 |
odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres); |
| 176 |
odev.ifd = ConnectionNumber(ourdisplay); |
| 177 |
} |
| 178 |
|
| 179 |
|
| 180 |
dev_close() /* close our display */ |
| 181 |
{ |
| 182 |
freepixels(); |
| 183 |
XFreeGC(ourdisplay, ourgc); |
| 184 |
XDestroyWindow(ourdisplay, gwind); |
| 185 |
gwind = 0; |
| 186 |
ourgc = 0; |
| 187 |
XCloseDisplay(ourdisplay); |
| 188 |
ourdisplay = NULL; |
| 189 |
qtFreeLeaves(); |
| 190 |
tmDone(NULL); |
| 191 |
odev.v.type = 0; |
| 192 |
odev.hres = odev.vres = 0; |
| 193 |
odev.ifd = -1; |
| 194 |
} |
| 195 |
|
| 196 |
|
| 197 |
dev_view(nv) /* assign new driver view */ |
| 198 |
VIEW *nv; |
| 199 |
{ |
| 200 |
if (nv != &odev.v) |
| 201 |
copystruct(&odev.v, nv); |
| 202 |
qtReplant(); |
| 203 |
} |
| 204 |
|
| 205 |
|
| 206 |
int |
| 207 |
dev_input() /* get X11 input */ |
| 208 |
{ |
| 209 |
inpresflags = 0; |
| 210 |
|
| 211 |
do |
| 212 |
getevent(); |
| 213 |
|
| 214 |
while (XQLength(ourdisplay) > 0); |
| 215 |
|
| 216 |
return(inpresflags); |
| 217 |
} |
| 218 |
|
| 219 |
|
| 220 |
dev_paintr(rgb, xmin, ymin, xmax, ymax) /* fill a rectangle */ |
| 221 |
BYTE rgb[3]; |
| 222 |
int xmin, ymin, xmax, ymax; |
| 223 |
{ |
| 224 |
unsigned long pixel; |
| 225 |
|
| 226 |
if (!mapped) |
| 227 |
return; |
| 228 |
if (ncolors > 0) |
| 229 |
pixel = pixval[get_pixel(rgb, xnewcolr)]; |
| 230 |
else |
| 231 |
pixel = true_pixel(rgb); |
| 232 |
XSetForeground(ourdisplay, ourgc, pixel); |
| 233 |
XFillRectangle(ourdisplay, gwind, |
| 234 |
ourgc, xmin, odev.vres-ymax, xmax-xmin, ymax-ymin); |
| 235 |
} |
| 236 |
|
| 237 |
|
| 238 |
int |
| 239 |
dev_flush() /* flush output */ |
| 240 |
{ |
| 241 |
qtUpdate(); |
| 242 |
return(XPending(ourdisplay)); |
| 243 |
} |
| 244 |
|
| 245 |
|
| 246 |
static |
| 247 |
xnewcolr(ndx, r, g, b) /* enter a color into hardware table */ |
| 248 |
int ndx; |
| 249 |
int r, g, b; |
| 250 |
{ |
| 251 |
XColor xcolor; |
| 252 |
|
| 253 |
xcolor.pixel = pixval[ndx]; |
| 254 |
xcolor.red = r << 8; |
| 255 |
xcolor.green = g << 8; |
| 256 |
xcolor.blue = b << 8; |
| 257 |
xcolor.flags = DoRed|DoGreen|DoBlue; |
| 258 |
|
| 259 |
XStoreColor(ourdisplay, ourmap, &xcolor); |
| 260 |
} |
| 261 |
|
| 262 |
|
| 263 |
static int |
| 264 |
getpixels() /* get the color map */ |
| 265 |
{ |
| 266 |
XColor thiscolor; |
| 267 |
register int i, j; |
| 268 |
|
| 269 |
if (ncolors > 0) |
| 270 |
return(ncolors); |
| 271 |
if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) { |
| 272 |
ourmap = DefaultColormap(ourdisplay,ourscreen); |
| 273 |
goto loop; |
| 274 |
} |
| 275 |
newmap: |
| 276 |
ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone); |
| 277 |
loop: |
| 278 |
for (ncolors = ourvinfo.colormap_size; |
| 279 |
ncolors > ourvinfo.colormap_size/3; |
| 280 |
ncolors = ncolors*.937) { |
| 281 |
pixval = (unsigned long *)malloc(ncolors*sizeof(unsigned long)); |
| 282 |
if (pixval == NULL) |
| 283 |
return(ncolors = 0); |
| 284 |
if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,pixval,ncolors)) |
| 285 |
break; |
| 286 |
free((char *)pixval); |
| 287 |
pixval = NULL; |
| 288 |
} |
| 289 |
if (pixval == NULL) { |
| 290 |
if (ourmap == DefaultColormap(ourdisplay,ourscreen)) |
| 291 |
goto newmap; /* try it with our map */ |
| 292 |
else |
| 293 |
return(ncolors = 0); /* failed */ |
| 294 |
} |
| 295 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
| 296 |
for (i = 0; i < ncolors; i++) { /* reset black and white */ |
| 297 |
if (pixval[i] != ourblack && pixval[i] != ourwhite) |
| 298 |
continue; |
| 299 |
thiscolor.pixel = pixval[i]; |
| 300 |
thiscolor.flags = DoRed|DoGreen|DoBlue; |
| 301 |
XQueryColor(ourdisplay, |
| 302 |
DefaultColormap(ourdisplay,ourscreen), |
| 303 |
&thiscolor); |
| 304 |
XStoreColor(ourdisplay, ourmap, &thiscolor); |
| 305 |
for (j = i; j+1 < ncolors; j++) |
| 306 |
pixval[j] = pixval[j+1]; |
| 307 |
ncolors--; |
| 308 |
i--; |
| 309 |
} |
| 310 |
XSetWindowColormap(ourdisplay, gwind, ourmap); |
| 311 |
return(ncolors); |
| 312 |
} |
| 313 |
|
| 314 |
|
| 315 |
static |
| 316 |
freepixels() /* free our pixels */ |
| 317 |
{ |
| 318 |
if (ncolors == 0) |
| 319 |
return; |
| 320 |
XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L); |
| 321 |
free((char *)pixval); |
| 322 |
pixval = NULL; |
| 323 |
ncolors = 0; |
| 324 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
| 325 |
XFreeColormap(ourdisplay, ourmap); |
| 326 |
ourmap = 0; |
| 327 |
} |
| 328 |
|
| 329 |
|
| 330 |
static unsigned long |
| 331 |
true_pixel(rgb) /* return true pixel value for color */ |
| 332 |
register BYTE rgb[3]; |
| 333 |
{ |
| 334 |
register unsigned long rval; |
| 335 |
|
| 336 |
rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask; |
| 337 |
rval |= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask; |
| 338 |
rval |= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask; |
| 339 |
return(rval); |
| 340 |
} |
| 341 |
|
| 342 |
|
| 343 |
static |
| 344 |
getevent() /* get next event */ |
| 345 |
{ |
| 346 |
XNextEvent(ourdisplay, levptr(XEvent)); |
| 347 |
switch (levptr(XEvent)->type) { |
| 348 |
case ConfigureNotify: |
| 349 |
resizewindow(levptr(XConfigureEvent)); |
| 350 |
break; |
| 351 |
case UnmapNotify: |
| 352 |
mapped = 0; |
| 353 |
freepixels(); |
| 354 |
break; |
| 355 |
case MapNotify: |
| 356 |
if (ourvinfo.class == PseudoColor || |
| 357 |
ourvinfo.class == GrayScale) { |
| 358 |
if (getpixels() == 0) |
| 359 |
error(SYSTEM, "cannot allocate colors\n"); |
| 360 |
new_ctab(ncolors); |
| 361 |
} |
| 362 |
mapped = 1; |
| 363 |
break; |
| 364 |
case Expose: |
| 365 |
fixwindow(levptr(XExposeEvent)); |
| 366 |
break; |
| 367 |
case KeyPress: |
| 368 |
getkey(levptr(XKeyPressedEvent)); |
| 369 |
break; |
| 370 |
case ButtonPress: |
| 371 |
getmove(levptr(XButtonPressedEvent)); |
| 372 |
break; |
| 373 |
} |
| 374 |
} |
| 375 |
|
| 376 |
|
| 377 |
static |
| 378 |
ilclip(dp, wp) /* clip world coordinates to device */ |
| 379 |
int dp[2][2]; |
| 380 |
FVECT wp[2]; |
| 381 |
{ |
| 382 |
static FVECT vmin = {0.,0.,0.}, vmax = {1.,1.,FHUGE}; |
| 383 |
FVECT ip[2]; |
| 384 |
/* not exactly right, but who cares? */ |
| 385 |
viewloc(ip[0], &odev.v, wp[0]); |
| 386 |
viewloc(ip[1], &odev.v, wp[1]); |
| 387 |
if (!clip(ip[0], ip[1], vmin, vmax)) |
| 388 |
return(0); |
| 389 |
dp[0][0] = ip[0][0]*odev.hres; |
| 390 |
dp[0][1] = ip[0][1]*odev.vres; |
| 391 |
dp[1][0] = ip[1][0]*odev.hres; |
| 392 |
dp[1][1] = ip[1][1]*odev.vres; |
| 393 |
return(1); |
| 394 |
} |
| 395 |
|
| 396 |
|
| 397 |
static |
| 398 |
draw3dline(wp) /* draw 3d line in world coordinates */ |
| 399 |
FVECT wp[2]; |
| 400 |
{ |
| 401 |
int dp[2][2]; |
| 402 |
|
| 403 |
if (!ilclip(dp, wp)) |
| 404 |
return; |
| 405 |
XDrawLine(ourdisplay, gwind, ourgc, |
| 406 |
dp[0][0], odev.vres-1 - dp[0][1], |
| 407 |
dp[1][0], odev.vres-1 - dp[1][1]); |
| 408 |
} |
| 409 |
|
| 410 |
|
| 411 |
static |
| 412 |
draw_grids() /* draw holodeck section grids */ |
| 413 |
{ |
| 414 |
static BYTE gridrgb[3] = {0x0, 0xff, 0xff}; |
| 415 |
unsigned long pixel; |
| 416 |
|
| 417 |
if (!mapped || odev.v.type != VT_PER) |
| 418 |
return; |
| 419 |
if (ncolors > 0) |
| 420 |
pixel = pixval[get_pixel(gridrgb, xnewcolr)]; |
| 421 |
else |
| 422 |
pixel = true_pixel(gridrgb); |
| 423 |
XSetForeground(ourdisplay, ourgc, pixel); |
| 424 |
/* draw each grid line */ |
| 425 |
gridlines(draw3dline); |
| 426 |
} |
| 427 |
|
| 428 |
|
| 429 |
static |
| 430 |
moveview(dx, dy, move) /* move our view */ |
| 431 |
int dx, dy, move; |
| 432 |
{ |
| 433 |
VIEW nv; |
| 434 |
double d; |
| 435 |
register int i, li; |
| 436 |
/* start with old view */ |
| 437 |
copystruct(&nv, &odev.v); |
| 438 |
/* change view direction */ |
| 439 |
if (move) { |
| 440 |
if ((li = qtFindLeaf(dx, dy)) < 0) |
| 441 |
return(0); /* not on window */ |
| 442 |
for (i = 0; i < 3; i++) |
| 443 |
nv.vdir[i] = qtL.wp[li][i] - nv.vp[i]; |
| 444 |
} else { |
| 445 |
if (viewray(nv.vp, nv.vdir, &odev.v, |
| 446 |
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY) |
| 447 |
return(0); /* outside view */ |
| 448 |
} |
| 449 |
/* move viewpoint */ |
| 450 |
if (move > 0) |
| 451 |
for (i = 0; i < 3; i++) |
| 452 |
nv.vp[i] += MOVPCT/100. * nv.vdir[i]; |
| 453 |
else if (move < 0) |
| 454 |
for (i = 0; i < 3; i++) |
| 455 |
nv.vp[i] -= MOVPCT/100. * nv.vdir[i]; |
| 456 |
if (move && headlocked) { |
| 457 |
d = 0; /* bring head back to same height */ |
| 458 |
for (i = 0; i < 3; i++) |
| 459 |
d += odev.v.vup[i] * (odev.v.vp[i] - nv.vp[i]); |
| 460 |
for (i = 0; i < 3; i++) |
| 461 |
nv.vp[i] += d * odev.v.vup[i]; |
| 462 |
} |
| 463 |
if (setview(&nv) != NULL) |
| 464 |
return(0); /* illegal view */ |
| 465 |
dev_view(&nv); |
| 466 |
inpresflags |= DEV_NEWVIEW; |
| 467 |
return(1); |
| 468 |
} |
| 469 |
|
| 470 |
|
| 471 |
static |
| 472 |
getmove(ebut) /* get view change */ |
| 473 |
XButtonPressedEvent *ebut; |
| 474 |
{ |
| 475 |
int whichbutton = ebut->button; |
| 476 |
int oldnodesiz = qtMinNodesiz; |
| 477 |
Window rootw, childw; |
| 478 |
int rootx, rooty, wx, wy; |
| 479 |
unsigned int statemask; |
| 480 |
|
| 481 |
qtMinNodesiz = 16; /* for quicker update */ |
| 482 |
XNoOp(ourdisplay); |
| 483 |
|
| 484 |
while (!XCheckMaskEvent(ourdisplay, |
| 485 |
ButtonReleaseMask, levptr(XEvent))) { |
| 486 |
|
| 487 |
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
| 488 |
&rootx, &rooty, &wx, &wy, &statemask)) |
| 489 |
break; /* on another screen */ |
| 490 |
|
| 491 |
if (!moveview(wx, odev.vres-1-wy, MOVDIR(whichbutton))) { |
| 492 |
sleep(1); |
| 493 |
continue; |
| 494 |
} |
| 495 |
XClearWindow(ourdisplay, gwind); |
| 496 |
qtUpdate(); |
| 497 |
draw_grids(); |
| 498 |
} |
| 499 |
if (!(inpresflags & DEV_NEWVIEW)) { /* do final motion */ |
| 500 |
whichbutton = levptr(XButtonReleasedEvent)->button; |
| 501 |
wx = levptr(XButtonReleasedEvent)->x; |
| 502 |
wy = levptr(XButtonReleasedEvent)->y; |
| 503 |
moveview(wx, odev.vres-1-wy, MOVDIR(whichbutton)); |
| 504 |
} |
| 505 |
dev_flush(); |
| 506 |
|
| 507 |
qtMinNodesiz = oldnodesiz; /* restore quadtree resolution */ |
| 508 |
} |
| 509 |
|
| 510 |
|
| 511 |
static |
| 512 |
getkey(ekey) /* get input key */ |
| 513 |
register XKeyPressedEvent *ekey; |
| 514 |
{ |
| 515 |
int n; |
| 516 |
char buf[8]; |
| 517 |
|
| 518 |
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
| 519 |
if (n != 1) |
| 520 |
return; |
| 521 |
switch (buf[0]) { |
| 522 |
case 'h': /* turn on height motion lock */ |
| 523 |
headlocked = 1; |
| 524 |
return; |
| 525 |
case 'H': /* turn off height motion lock */ |
| 526 |
headlocked = 0; |
| 527 |
return; |
| 528 |
case CTRL('S'): |
| 529 |
case 'p': /* pause computation */ |
| 530 |
inpresflags |= DEV_WAIT; |
| 531 |
return; |
| 532 |
case 'v': /* spit out view */ |
| 533 |
fputs(VIEWSTR, stderr); |
| 534 |
fprintview(&odev.v, stderr); |
| 535 |
fputc('\n', stderr); |
| 536 |
return; |
| 537 |
case CTRL('Q'): |
| 538 |
case '\n': |
| 539 |
case '\r': /* resume computation */ |
| 540 |
inpresflags |= DEV_RESUME; |
| 541 |
return; |
| 542 |
case CTRL('R'): /* redraw screen */ |
| 543 |
if (ncolors > 0) |
| 544 |
new_ctab(ncolors); |
| 545 |
qtRedraw(0, 0, odev.hres, odev.vres); |
| 546 |
return; |
| 547 |
case CTRL('L'): /* refresh from server */ |
| 548 |
if (inpresflags & DEV_REDRAW) |
| 549 |
return; |
| 550 |
XClearWindow(ourdisplay, gwind); |
| 551 |
draw_grids(); |
| 552 |
XFlush(ourdisplay); |
| 553 |
qtCompost(100); /* unload the old tree */ |
| 554 |
if (ncolors > 0) |
| 555 |
new_ctab(ncolors); |
| 556 |
inpresflags |= DEV_REDRAW; /* resend values from server */ |
| 557 |
return; |
| 558 |
case CTRL('D'): |
| 559 |
case 'Q': |
| 560 |
case 'q': /* quit the program */ |
| 561 |
inpresflags |= DEV_SHUTDOWN; |
| 562 |
return; |
| 563 |
default: |
| 564 |
XBell(ourdisplay, 0); |
| 565 |
return; |
| 566 |
} |
| 567 |
} |
| 568 |
|
| 569 |
|
| 570 |
static |
| 571 |
fixwindow(eexp) /* repair damage to window */ |
| 572 |
register XExposeEvent *eexp; |
| 573 |
{ |
| 574 |
if (odev.hres == 0 || odev.vres == 0) { /* first exposure */ |
| 575 |
odev.hres = eexp->width; |
| 576 |
odev.vres = eexp->height; |
| 577 |
inpresflags |= DEV_NEWSIZE; |
| 578 |
} |
| 579 |
qtRedraw(eexp->x, odev.vres - eexp->y - eexp->height, |
| 580 |
eexp->x + eexp->width, odev.vres - eexp->y); |
| 581 |
} |
| 582 |
|
| 583 |
|
| 584 |
static |
| 585 |
resizewindow(ersz) /* resize window */ |
| 586 |
register XConfigureEvent *ersz; |
| 587 |
{ |
| 588 |
if (ersz->width == odev.hres && ersz->height == odev.vres) |
| 589 |
return; |
| 590 |
|
| 591 |
if (odev.hres != 0 && odev.vres != 0) { |
| 592 |
odev.v.horiz = 2.*180./PI * atan( |
| 593 |
tan(PI/180./2.*odev.v.horiz) * ersz->width/odev.hres ); |
| 594 |
odev.v.vert = 2.*180./PI * atan( |
| 595 |
tan(PI/180./2.*odev.v.vert) * ersz->height/odev.vres ); |
| 596 |
inpresflags |= DEV_NEWVIEW; |
| 597 |
} |
| 598 |
odev.hres = ersz->width; |
| 599 |
odev.vres = ersz->height; |
| 600 |
|
| 601 |
inpresflags |= DEV_NEWSIZE; |
| 602 |
} |
