1 |
/* Copyright (c) 1992 Regents of the University of California */ |
2 |
|
3 |
#ifndef lint |
4 |
static char SCCSid[] = "$SunId$ LBL"; |
5 |
#endif |
6 |
|
7 |
/* |
8 |
* x11image.c - driver for X-windows |
9 |
* |
10 |
* 3/1/90 |
11 |
*/ |
12 |
|
13 |
/* |
14 |
* Modified for X11 |
15 |
* |
16 |
* January 1990 |
17 |
* |
18 |
* Anat Grynberg and Greg Ward |
19 |
*/ |
20 |
|
21 |
|
22 |
#include "standard.h" |
23 |
|
24 |
#include <X11/Xlib.h> |
25 |
#include <X11/cursorfont.h> |
26 |
#include <X11/Xutil.h> |
27 |
|
28 |
#include "color.h" |
29 |
#include "view.h" |
30 |
#include "pic.h" |
31 |
#include "x11raster.h" |
32 |
#include "random.h" |
33 |
#include "resolu.h" |
34 |
|
35 |
#define FONTNAME "8x13" /* text font we'll use */ |
36 |
|
37 |
#define CTRL(c) ((c)-'@') |
38 |
|
39 |
#define BORWIDTH 5 /* border width */ |
40 |
|
41 |
#define ICONSIZ (8*10) /* maximum icon dimension (even 8) */ |
42 |
|
43 |
#define ourscreen DefaultScreen(thedisplay) |
44 |
#define ourroot RootWindow(thedisplay,ourscreen) |
45 |
|
46 |
#define revline(x0,y0,x1,y1) XDrawLine(thedisplay,wind,revgc,x0,y0,x1,y1) |
47 |
|
48 |
#define redraw(x,y,w,h) patch_raster(wind,(x)-xoff,(y)-yoff,x,y,w,h,ourras) |
49 |
|
50 |
double gamcor = 2.2; /* gamma correction */ |
51 |
|
52 |
int dither = 1; /* dither colors? */ |
53 |
int fast = 0; /* keep picture in Pixmap? */ |
54 |
|
55 |
char *dispname = NULL; /* our display name */ |
56 |
|
57 |
Window wind = 0; /* our output window */ |
58 |
unsigned long ourblack=0, ourwhite=1; /* black and white for this visual */ |
59 |
Font fontid; /* our font */ |
60 |
|
61 |
int maxcolors = 0; /* maximum colors */ |
62 |
int greyscale = 0; /* in grey */ |
63 |
|
64 |
int scale = 0; /* scalefactor; power of two */ |
65 |
|
66 |
int xoff = 0; /* x image offset */ |
67 |
int yoff = 0; /* y image offset */ |
68 |
|
69 |
VIEW ourview = STDVIEW; /* image view parameters */ |
70 |
int gotview = 0; /* got parameters from file */ |
71 |
|
72 |
COLR *scanline; /* scan line buffer */ |
73 |
|
74 |
RESOLU inpres; /* input resolution and ordering */ |
75 |
int xmax, ymax; /* picture dimensions */ |
76 |
int width, height; /* window size */ |
77 |
char *fname = NULL; /* input file name */ |
78 |
FILE *fin = stdin; /* input file */ |
79 |
long *scanpos = NULL; /* scan line positions in file */ |
80 |
int cury = 0; /* current scan location */ |
81 |
|
82 |
double exposure = 1.0; /* exposure compensation used */ |
83 |
|
84 |
int wrongformat = 0; /* input in another format? */ |
85 |
|
86 |
GC ourgc; /* standard graphics context */ |
87 |
GC revgc; /* graphics context with GXinvert */ |
88 |
|
89 |
int *ourrank; /* our visual class ranking */ |
90 |
XVisualInfo ourvis; /* our visual */ |
91 |
XRASTER *ourras; /* our stored image */ |
92 |
unsigned char *ourdata; /* our image data */ |
93 |
|
94 |
struct { |
95 |
int xmin, ymin, xsiz, ysiz; |
96 |
} box = {0, 0, 0, 0}; /* current box */ |
97 |
|
98 |
char *geometry = NULL; /* geometry specification */ |
99 |
|
100 |
char icondata[ICONSIZ*ICONSIZ/8]; /* icon bitmap data */ |
101 |
int iconwidth = 0, iconheight = 0; |
102 |
|
103 |
char *progname; |
104 |
|
105 |
char errmsg[128]; |
106 |
|
107 |
extern long ftell(); |
108 |
|
109 |
extern char *malloc(), *calloc(); |
110 |
|
111 |
extern double pow(), log(); |
112 |
|
113 |
Display *thedisplay; |
114 |
|
115 |
main(argc, argv) |
116 |
int argc; |
117 |
char *argv[]; |
118 |
{ |
119 |
extern char *getenv(); |
120 |
char *gv; |
121 |
int headline(); |
122 |
int i; |
123 |
|
124 |
progname = argv[0]; |
125 |
if ((gv = getenv("GAMMA")) != NULL) |
126 |
gamcor = atof(gv); |
127 |
|
128 |
for (i = 1; i < argc; i++) |
129 |
if (argv[i][0] == '-') |
130 |
switch (argv[i][1]) { |
131 |
case 'c': |
132 |
maxcolors = atoi(argv[++i]); |
133 |
break; |
134 |
case 'b': |
135 |
greyscale = !greyscale; |
136 |
break; |
137 |
case 'm': |
138 |
maxcolors = 2; |
139 |
break; |
140 |
case 'd': |
141 |
if (argv[i][2] == 'i') |
142 |
dispname = argv[++i]; |
143 |
else |
144 |
dither = !dither; |
145 |
break; |
146 |
case 'f': |
147 |
fast = !fast; |
148 |
break; |
149 |
case 'e': |
150 |
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
151 |
goto userr; |
152 |
scale = atoi(argv[++i]); |
153 |
break; |
154 |
case 'g': |
155 |
if (argv[i][2] == 'e') |
156 |
geometry = argv[++i]; |
157 |
else |
158 |
gamcor = atof(argv[++i]); |
159 |
break; |
160 |
default: |
161 |
goto userr; |
162 |
} |
163 |
else if (argv[i][0] == '=') |
164 |
geometry = argv[i]; |
165 |
else |
166 |
break; |
167 |
|
168 |
if (i == argc-1) { |
169 |
fname = argv[i]; |
170 |
fin = fopen(fname, "r"); |
171 |
if (fin == NULL) { |
172 |
sprintf(errmsg, "cannot open file \"%s\"", fname); |
173 |
quiterr(errmsg); |
174 |
} |
175 |
} else if (i != argc) |
176 |
goto userr; |
177 |
/* get header */ |
178 |
getheader(fin, headline, NULL); |
179 |
/* get picture dimensions */ |
180 |
if (wrongformat || !fgetsresolu(&inpres, fin)) |
181 |
quiterr("bad picture format"); |
182 |
xmax = scanlen(&inpres); |
183 |
ymax = numscans(&inpres); |
184 |
/* set view parameters */ |
185 |
if (gotview && setview(&ourview) != NULL) |
186 |
gotview = 0; |
187 |
if ((scanline = (COLR *)malloc(xmax*sizeof(COLR))) == NULL) |
188 |
quiterr("out of memory"); |
189 |
|
190 |
init(); /* get file and open window */ |
191 |
|
192 |
for ( ; ; ) |
193 |
getevent(); /* main loop */ |
194 |
userr: |
195 |
fprintf(stderr, |
196 |
"Usage: %s [-display disp][-geometry spec][-b][-m][-d][-f][-c ncolors][-e +/-stops] file\n", |
197 |
progname); |
198 |
quit(1); |
199 |
} |
200 |
|
201 |
|
202 |
headline(s) /* get relevant info from header */ |
203 |
char *s; |
204 |
{ |
205 |
char fmt[32]; |
206 |
|
207 |
if (isexpos(s)) |
208 |
exposure *= exposval(s); |
209 |
else if (isformat(s)) { |
210 |
formatval(fmt, s); |
211 |
wrongformat = strcmp(fmt, COLRFMT); |
212 |
} else if (isview(s) && sscanview(&ourview, s) > 0) |
213 |
gotview++; |
214 |
} |
215 |
|
216 |
|
217 |
init() /* get data and open window */ |
218 |
{ |
219 |
XWMHints ourxwmhints; |
220 |
XSetWindowAttributes ourwinattr; |
221 |
XSizeHints oursizhints; |
222 |
register int i; |
223 |
|
224 |
if (fname != NULL) { |
225 |
scanpos = (long *)malloc(ymax*sizeof(long)); |
226 |
if (scanpos == NULL) |
227 |
goto memerr; |
228 |
for (i = 0; i < ymax; i++) |
229 |
scanpos[i] = -1; |
230 |
} |
231 |
if ((thedisplay = XOpenDisplay(dispname)) == NULL) |
232 |
quiterr("cannot open display"); |
233 |
/* get best visual for default screen */ |
234 |
getbestvis(); |
235 |
/* store image */ |
236 |
getras(); |
237 |
/* open window */ |
238 |
ourwinattr.border_pixel = ourblack; |
239 |
ourwinattr.background_pixel = ourwhite; |
240 |
ourwinattr.colormap = XCreateColormap(thedisplay, ourroot, |
241 |
ourvis.visual, AllocNone); |
242 |
wind = XCreateWindow(thedisplay, ourroot, 0, 0, xmax, ymax, BORWIDTH, |
243 |
ourvis.depth, InputOutput, ourvis.visual, |
244 |
CWBackPixel|CWBorderPixel|CWColormap, &ourwinattr); |
245 |
if (wind == 0) |
246 |
quiterr("cannot create window"); |
247 |
XFreeColormap(thedisplay, ourwinattr.colormap); |
248 |
width = xmax; |
249 |
height = ymax; |
250 |
ourgc = XCreateGC(thedisplay, wind, 0, 0); |
251 |
XSetState(thedisplay, ourgc, ourblack, ourwhite, GXcopy, AllPlanes); |
252 |
revgc = XCreateGC(thedisplay, wind, 0, 0); |
253 |
XSetFunction(thedisplay, revgc, GXinvert); |
254 |
fontid = XLoadFont(thedisplay, FONTNAME); |
255 |
if (fontid == 0) |
256 |
quiterr("cannot get font"); |
257 |
XSetFont(thedisplay, ourgc, fontid); |
258 |
XDefineCursor(thedisplay, wind, XCreateFontCursor(thedisplay, |
259 |
XC_diamond_cross)); |
260 |
XStoreName(thedisplay, wind, fname == NULL ? progname : fname); |
261 |
if (geometry != NULL) { |
262 |
bzero((char *)&oursizhints, sizeof(oursizhints)); |
263 |
i = XParseGeometry(geometry, &oursizhints.x, &oursizhints.y, |
264 |
(unsigned *)&oursizhints.width, |
265 |
(unsigned *)&oursizhints.height); |
266 |
if ((i&(WidthValue|HeightValue)) == (WidthValue|HeightValue)) |
267 |
oursizhints.flags |= USSize; |
268 |
else { |
269 |
oursizhints.width = xmax; |
270 |
oursizhints.height = ymax; |
271 |
oursizhints.flags |= PSize; |
272 |
} |
273 |
if ((i&(XValue|YValue)) == (XValue|YValue)) { |
274 |
oursizhints.flags |= USPosition; |
275 |
if (i & XNegative) |
276 |
oursizhints.x += DisplayWidth(thedisplay, |
277 |
ourscreen)-1-oursizhints.width-2*BORWIDTH; |
278 |
if (i & YNegative) |
279 |
oursizhints.y += DisplayHeight(thedisplay, |
280 |
ourscreen)-1-oursizhints.height-2*BORWIDTH; |
281 |
} |
282 |
XSetNormalHints(thedisplay, wind, &oursizhints); |
283 |
} |
284 |
ourxwmhints.flags = InputHint|IconPixmapHint; |
285 |
ourxwmhints.input = True; |
286 |
ourxwmhints.icon_pixmap = XCreateBitmapFromData(thedisplay, |
287 |
wind, icondata, iconwidth, iconheight); |
288 |
XSetWMHints(thedisplay, wind, &ourxwmhints); |
289 |
XSelectInput(thedisplay, wind, ButtonPressMask|ButtonReleaseMask |
290 |
|ButtonMotionMask|StructureNotifyMask |
291 |
|KeyPressMask|ExposureMask); |
292 |
XMapWindow(thedisplay, wind); |
293 |
return; |
294 |
memerr: |
295 |
quiterr("out of memory"); |
296 |
} /* end of init */ |
297 |
|
298 |
|
299 |
quiterr(err) /* print message and exit */ |
300 |
char *err; |
301 |
{ |
302 |
if (err != NULL) { |
303 |
fprintf(stderr, "%s: %s\n", progname, err); |
304 |
exit(1); |
305 |
} |
306 |
exit(0); |
307 |
} |
308 |
|
309 |
|
310 |
eputs(s) |
311 |
char *s; |
312 |
{ |
313 |
fputs(s, stderr); |
314 |
} |
315 |
|
316 |
|
317 |
quit(code) |
318 |
int code; |
319 |
{ |
320 |
exit(code); |
321 |
} |
322 |
|
323 |
|
324 |
static int |
325 |
viscmp(v1,v2) /* compare visual to see which is better, descending */ |
326 |
register XVisualInfo *v1, *v2; |
327 |
{ |
328 |
int bad1 = 0, bad2 = 0; |
329 |
register int *rp; |
330 |
|
331 |
if (v1->class == v2->class) { |
332 |
if (v1->class == TrueColor || v1->class == DirectColor) { |
333 |
/* prefer 24-bit to 32-bit */ |
334 |
if (v1->depth == 24 && v2->depth == 32) |
335 |
return(-1); |
336 |
if (v1->depth == 32 && v2->depth == 24) |
337 |
return(1); |
338 |
return(0); |
339 |
} |
340 |
/* don't be too greedy */ |
341 |
if (maxcolors <= 1<<v1->depth && maxcolors <= 1<<v2->depth) |
342 |
return(v1->depth - v2->depth); |
343 |
return(v2->depth - v1->depth); |
344 |
} |
345 |
/* prefer Pseudo when < 24-bit */ |
346 |
if ((v1->class == TrueColor || v1->class == DirectColor) && |
347 |
v1->depth < 24) |
348 |
bad1 = 1; |
349 |
if ((v2->class == TrueColor || v2->class == DirectColor) && |
350 |
v2->depth < 24) |
351 |
bad2 = -1; |
352 |
if (bad1 | bad2) |
353 |
return(bad1+bad2); |
354 |
/* otherwise, use class ranking */ |
355 |
for (rp = ourrank; *rp != -1; rp++) { |
356 |
if (v1->class == *rp) |
357 |
return(-1); |
358 |
if (v2->class == *rp) |
359 |
return(1); |
360 |
} |
361 |
return(0); |
362 |
} |
363 |
|
364 |
|
365 |
getbestvis() /* get the best visual for this screen */ |
366 |
{ |
367 |
#ifdef DEBUG |
368 |
static char vistype[][12] = { |
369 |
"StaticGray", |
370 |
"GrayScale", |
371 |
"StaticColor", |
372 |
"PseudoColor", |
373 |
"TrueColor", |
374 |
"DirectColor" |
375 |
}; |
376 |
#endif |
377 |
static int rankings[3][6] = { |
378 |
{TrueColor,DirectColor,PseudoColor,GrayScale,StaticGray,-1}, |
379 |
{PseudoColor,GrayScale,StaticGray,-1}, |
380 |
{PseudoColor,GrayScale,StaticGray,-1} |
381 |
}; |
382 |
XVisualInfo *xvi; |
383 |
int vismatched; |
384 |
register int i, j; |
385 |
|
386 |
if (greyscale) { |
387 |
ourrank = rankings[2]; |
388 |
if (maxcolors < 2) maxcolors = 256; |
389 |
} else if (maxcolors >= 2 && maxcolors <= 256) |
390 |
ourrank = rankings[1]; |
391 |
else { |
392 |
ourrank = rankings[0]; |
393 |
maxcolors = 256; |
394 |
} |
395 |
/* find best visual */ |
396 |
ourvis.screen = ourscreen; |
397 |
xvi = XGetVisualInfo(thedisplay,VisualScreenMask,&ourvis,&vismatched); |
398 |
if (xvi == NULL) |
399 |
quiterr("no visuals for this screen!"); |
400 |
#ifdef DEBUG |
401 |
fprintf(stderr, "Supported visuals:\n"); |
402 |
for (i = 0; i < vismatched; i++) |
403 |
fprintf(stderr, "\ttype %s, depth %d\n", |
404 |
vistype[xvi[i].class], xvi[i].depth); |
405 |
#endif |
406 |
for (i = 0, j = 1; j < vismatched; j++) |
407 |
if (viscmp(&xvi[i],&xvi[j]) > 0) |
408 |
i = j; |
409 |
/* compare to least acceptable */ |
410 |
for (j = 0; ourrank[j++] != -1; ) |
411 |
; |
412 |
ourvis.class = ourrank[--j]; |
413 |
ourvis.depth = 1; |
414 |
if (viscmp(&xvi[i],&ourvis) > 0) |
415 |
quiterr("inadequate visuals on this screen"); |
416 |
/* OK, we'll use it */ |
417 |
copystruct(&ourvis, &xvi[i]); |
418 |
#ifdef DEBUG |
419 |
fprintf(stderr, "Selected visual type %s, depth %d\n", |
420 |
vistype[ourvis.class], ourvis.depth); |
421 |
#endif |
422 |
/* make appropriate adjustments */ |
423 |
if (ourvis.class == GrayScale || ourvis.class == StaticGray) |
424 |
greyscale = 1; |
425 |
if (ourvis.depth <= 8 && ourvis.colormap_size < maxcolors) |
426 |
maxcolors = ourvis.colormap_size; |
427 |
if (maxcolors > 4) |
428 |
maxcolors -= 2; |
429 |
if (ourvis.class == StaticGray) { |
430 |
ourblack = 0; |
431 |
ourwhite = 255; |
432 |
} else if (ourvis.class == PseudoColor) { |
433 |
ourblack = BlackPixel(thedisplay,ourscreen); |
434 |
ourwhite = WhitePixel(thedisplay,ourscreen); |
435 |
if ((ourblack|ourwhite) & ~255L) { |
436 |
ourblack = 0; |
437 |
ourwhite = 1; |
438 |
} |
439 |
} else { |
440 |
ourblack = 0; |
441 |
ourwhite = ourvis.red_mask|ourvis.green_mask|ourvis.blue_mask; |
442 |
} |
443 |
XFree((char *)xvi); |
444 |
} |
445 |
|
446 |
|
447 |
getras() /* get raster file */ |
448 |
{ |
449 |
colormap ourmap; |
450 |
XVisualInfo vinfo; |
451 |
|
452 |
if (maxcolors <= 2) { /* monochrome */ |
453 |
ourdata = (unsigned char *)malloc(ymax*((xmax+7)/8)); |
454 |
if (ourdata == NULL) |
455 |
goto fail; |
456 |
ourras = make_raster(thedisplay, &ourvis, 1, ourdata, |
457 |
xmax, ymax, 8); |
458 |
if (ourras == NULL) |
459 |
goto fail; |
460 |
getmono(); |
461 |
} else if (ourvis.class == TrueColor || ourvis.class == DirectColor) { |
462 |
ourdata = (unsigned char *)malloc(4*xmax*ymax); |
463 |
if (ourdata == NULL) |
464 |
goto fail; |
465 |
ourras = make_raster(thedisplay, &ourvis, 32, |
466 |
ourdata, xmax, ymax, 32); |
467 |
if (ourras == NULL) |
468 |
goto fail; |
469 |
getfull(); |
470 |
} else { |
471 |
ourdata = (unsigned char *)malloc(xmax*ymax); |
472 |
if (ourdata == NULL) |
473 |
goto fail; |
474 |
ourras = make_raster(thedisplay, &ourvis, 8, ourdata, |
475 |
xmax, ymax, 8); |
476 |
if (ourras == NULL) |
477 |
goto fail; |
478 |
if (ourvis.class == StaticGray) |
479 |
getgrey(); |
480 |
else { |
481 |
if (greyscale) |
482 |
biq(dither,maxcolors,1,ourmap); |
483 |
else |
484 |
ciq(dither,maxcolors,1,ourmap); |
485 |
if (init_rcolors(ourras, ourmap[0], |
486 |
ourmap[1], ourmap[2]) == 0) |
487 |
goto fail; |
488 |
} |
489 |
} |
490 |
return; |
491 |
fail: |
492 |
quiterr("could not create raster image"); |
493 |
} |
494 |
|
495 |
|
496 |
getevent() /* process the next event */ |
497 |
{ |
498 |
union { |
499 |
XEvent u; |
500 |
XConfigureEvent c; |
501 |
XExposeEvent e; |
502 |
XButtonPressedEvent b; |
503 |
XKeyPressedEvent k; |
504 |
} e; |
505 |
|
506 |
XNextEvent(thedisplay, &e.u); |
507 |
switch (e.u.type) { |
508 |
case KeyPress: |
509 |
docom(&e.k); |
510 |
break; |
511 |
case ConfigureNotify: |
512 |
width = e.c.width; |
513 |
height = e.c.height; |
514 |
break; |
515 |
case MapNotify: |
516 |
map_rcolors(ourras, wind); |
517 |
if (fast) |
518 |
make_rpixmap(ourras, wind); |
519 |
break; |
520 |
case UnmapNotify: |
521 |
if (!fast) |
522 |
unmap_rcolors(ourras); |
523 |
break; |
524 |
case Expose: |
525 |
redraw(e.e.x, e.e.y, e.e.width, e.e.height); |
526 |
break; |
527 |
case ButtonPress: |
528 |
if (e.b.state & (ShiftMask|ControlMask)) |
529 |
moveimage(&e.b); |
530 |
else |
531 |
getbox(&e.b); |
532 |
break; |
533 |
} |
534 |
} |
535 |
|
536 |
|
537 |
docom(ekey) /* execute command */ |
538 |
XKeyPressedEvent *ekey; |
539 |
{ |
540 |
char buf[80]; |
541 |
COLOR cval; |
542 |
XColor cvx; |
543 |
int com, n; |
544 |
double comp; |
545 |
FLOAT hv[2]; |
546 |
FVECT rorg, rdir; |
547 |
|
548 |
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
549 |
if (n == 0) |
550 |
return(0); |
551 |
com = buf[0]; |
552 |
switch (com) { /* interpret command */ |
553 |
case 'q': |
554 |
case CTRL('D'): /* quit */ |
555 |
quit(0); |
556 |
case '\n': |
557 |
case '\r': |
558 |
case 'l': |
559 |
case 'c': /* value */ |
560 |
if (avgbox(cval) == -1) |
561 |
return(-1); |
562 |
switch (com) { |
563 |
case '\n': |
564 |
case '\r': /* radiance */ |
565 |
sprintf(buf, "%.3f", intens(cval)/exposure); |
566 |
break; |
567 |
case 'l': /* luminance */ |
568 |
sprintf(buf, "%.0fL", luminance(cval)/exposure); |
569 |
break; |
570 |
case 'c': /* color */ |
571 |
comp = pow(2.0, (double)scale); |
572 |
sprintf(buf, "(%.2f,%.2f,%.2f)", |
573 |
colval(cval,RED)*comp, |
574 |
colval(cval,GRN)*comp, |
575 |
colval(cval,BLU)*comp); |
576 |
break; |
577 |
} |
578 |
XDrawImageString(thedisplay, wind, ourgc, |
579 |
box.xmin, box.ymin+box.ysiz, buf, strlen(buf)); |
580 |
return(0); |
581 |
case 'i': /* identify (contour) */ |
582 |
if (ourras->pixels == NULL) |
583 |
return(-1); |
584 |
n = ourdata[ekey->x-xoff+xmax*(ekey->y-yoff)]; |
585 |
n = ourras->pmap[n]; |
586 |
cvx.pixel = ourras->cdefs[n].pixel; |
587 |
cvx.red = random() & 65535; |
588 |
cvx.green = random() & 65535; |
589 |
cvx.blue = random() & 65535; |
590 |
cvx.flags = DoRed|DoGreen|DoBlue; |
591 |
XStoreColor(thedisplay, ourras->cmap, &cvx); |
592 |
return(0); |
593 |
case 'p': /* position */ |
594 |
pix2loc(hv, &inpres, ekey->x-xoff, ekey->y-yoff); |
595 |
sprintf(buf, "(%d,%d)", (int)(hv[0]*inpres.xr), |
596 |
(int)(hv[1]*inpres.yr)); |
597 |
XDrawImageString(thedisplay, wind, ourgc, ekey->x, ekey->y, |
598 |
buf, strlen(buf)); |
599 |
return(0); |
600 |
case 't': /* trace */ |
601 |
if (!gotview) { |
602 |
XBell(thedisplay, 0); |
603 |
return(-1); |
604 |
} |
605 |
pix2loc(hv, &inpres, ekey->x-xoff, ekey->y-yoff); |
606 |
if (viewray(rorg, rdir, &ourview, hv[0], hv[1]) < 0) |
607 |
return(-1); |
608 |
printf("%e %e %e ", rorg[0], rorg[1], rorg[2]); |
609 |
printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]); |
610 |
fflush(stdout); |
611 |
return(0); |
612 |
case '=': /* adjust exposure */ |
613 |
if (avgbox(cval) == -1) |
614 |
return(-1); |
615 |
n = log(.5/bright(cval))/.69315 - scale; /* truncate */ |
616 |
if (n == 0) |
617 |
return(0); |
618 |
scale_rcolors(ourras, pow(2.0, (double)n)); |
619 |
scale += n; |
620 |
sprintf(buf, "%+d", scale); |
621 |
XDrawImageString(thedisplay, wind, ourgc, |
622 |
box.xmin, box.ymin+box.ysiz, buf, strlen(buf)); |
623 |
XFlush(thedisplay); |
624 |
free(ourdata); |
625 |
free_raster(ourras); |
626 |
getras(); |
627 |
/* fall through */ |
628 |
case CTRL('R'): /* redraw */ |
629 |
case CTRL('L'): |
630 |
unmap_rcolors(ourras); |
631 |
XClearWindow(thedisplay, wind); |
632 |
map_rcolors(ourras, wind); |
633 |
if (fast) |
634 |
make_rpixmap(ourras); |
635 |
redraw(0, 0, width, height); |
636 |
return(0); |
637 |
case ' ': /* clear */ |
638 |
redraw(box.xmin, box.ymin, box.xsiz, box.ysiz); |
639 |
return(0); |
640 |
default: |
641 |
XBell(thedisplay, 0); |
642 |
return(-1); |
643 |
} |
644 |
} |
645 |
|
646 |
|
647 |
moveimage(ebut) /* shift the image */ |
648 |
XButtonPressedEvent *ebut; |
649 |
{ |
650 |
union { |
651 |
XEvent u; |
652 |
XButtonReleasedEvent b; |
653 |
XPointerMovedEvent m; |
654 |
} e; |
655 |
int mxo, myo; |
656 |
|
657 |
XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e.u); |
658 |
while (e.u.type == MotionNotify) { |
659 |
mxo = e.m.x; |
660 |
myo = e.m.y; |
661 |
revline(ebut->x, ebut->y, mxo, myo); |
662 |
revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y, |
663 |
xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax); |
664 |
XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e.u); |
665 |
revline(ebut->x, ebut->y, mxo, myo); |
666 |
revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y, |
667 |
xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax); |
668 |
} |
669 |
xoff += e.b.x - ebut->x; |
670 |
yoff += e.b.y - ebut->y; |
671 |
XClearWindow(thedisplay, wind); |
672 |
redraw(0, 0, width, height); |
673 |
} |
674 |
|
675 |
|
676 |
getbox(ebut) /* get new box */ |
677 |
XButtonPressedEvent *ebut; |
678 |
{ |
679 |
union { |
680 |
XEvent u; |
681 |
XButtonReleasedEvent b; |
682 |
XPointerMovedEvent m; |
683 |
} e; |
684 |
|
685 |
XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e.u); |
686 |
while (e.u.type == MotionNotify) { |
687 |
revbox(ebut->x, ebut->y, box.xmin = e.m.x, box.ymin = e.m.y); |
688 |
XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e.u); |
689 |
revbox(ebut->x, ebut->y, box.xmin, box.ymin); |
690 |
} |
691 |
box.xmin = e.b.x<0 ? 0 : (e.b.x>=width ? width-1 : e.b.x); |
692 |
box.ymin = e.b.y<0 ? 0 : (e.b.y>=height ? height-1 : e.b.y); |
693 |
if (box.xmin > ebut->x) { |
694 |
box.xsiz = box.xmin - ebut->x + 1; |
695 |
box.xmin = ebut->x; |
696 |
} else { |
697 |
box.xsiz = ebut->x - box.xmin + 1; |
698 |
} |
699 |
if (box.ymin > ebut->y) { |
700 |
box.ysiz = box.ymin - ebut->y + 1; |
701 |
box.ymin = ebut->y; |
702 |
} else { |
703 |
box.ysiz = ebut->y - box.ymin + 1; |
704 |
} |
705 |
} |
706 |
|
707 |
|
708 |
revbox(x0, y0, x1, y1) /* draw box with reversed lines */ |
709 |
int x0, y0, x1, y1; |
710 |
{ |
711 |
revline(x0, y0, x1, y0); |
712 |
revline(x0, y1, x1, y1); |
713 |
revline(x0, y0, x0, y1); |
714 |
revline(x1, y0, x1, y1); |
715 |
} |
716 |
|
717 |
|
718 |
avgbox(clr) /* average color over current box */ |
719 |
COLOR clr; |
720 |
{ |
721 |
static COLOR lc; |
722 |
static int ll, lr, lt, lb; |
723 |
int left, right, top, bottom; |
724 |
int y; |
725 |
double d; |
726 |
COLOR ctmp; |
727 |
register int x; |
728 |
|
729 |
setcolor(clr, 0.0, 0.0, 0.0); |
730 |
left = box.xmin - xoff; |
731 |
right = left + box.xsiz; |
732 |
if (left < 0) |
733 |
left = 0; |
734 |
if (right > xmax) |
735 |
right = xmax; |
736 |
if (left >= right) |
737 |
return(-1); |
738 |
top = box.ymin - yoff; |
739 |
bottom = top + box.ysiz; |
740 |
if (top < 0) |
741 |
top = 0; |
742 |
if (bottom > ymax) |
743 |
bottom = ymax; |
744 |
if (top >= bottom) |
745 |
return(-1); |
746 |
if (left == ll && right == lr && top == lt && bottom == lb) { |
747 |
copycolor(clr, lc); |
748 |
return; |
749 |
} |
750 |
for (y = top; y < bottom; y++) { |
751 |
if (getscan(y) == -1) |
752 |
return(-1); |
753 |
for (x = left; x < right; x++) { |
754 |
colr_color(ctmp, scanline[x]); |
755 |
addcolor(clr, ctmp); |
756 |
} |
757 |
} |
758 |
d = 1.0/((right-left)*(bottom-top)); |
759 |
scalecolor(clr, d); |
760 |
ll = left; lr = right; lt = top; lb = bottom; |
761 |
copycolor(lc, clr); |
762 |
return(0); |
763 |
} |
764 |
|
765 |
|
766 |
getmono() /* get monochrome data */ |
767 |
{ |
768 |
register unsigned char *dp; |
769 |
register int x, err; |
770 |
int y, errp; |
771 |
short *cerr; |
772 |
|
773 |
if ((cerr = (short *)calloc(xmax,sizeof(short))) == NULL) |
774 |
quiterr("out of memory in getmono"); |
775 |
dp = ourdata - 1; |
776 |
for (y = 0; y < ymax; y++) { |
777 |
if (getscan(y) < 0) |
778 |
quiterr("seek error in getmono"); |
779 |
normcolrs(scanline, xmax, scale); |
780 |
add2icon(y, scanline); |
781 |
err = 0; |
782 |
for (x = 0; x < xmax; x++) { |
783 |
if (!(x&7)) |
784 |
*++dp = 0; |
785 |
errp = err; |
786 |
err += normbright(scanline[x]) + cerr[x]; |
787 |
if (err > 127) |
788 |
err -= 255; |
789 |
else |
790 |
*dp |= 1<<(7-(x&07)); |
791 |
err /= 3; |
792 |
cerr[x] = err + errp; |
793 |
} |
794 |
} |
795 |
free((char *)cerr); |
796 |
} |
797 |
|
798 |
|
799 |
add2icon(y, scan) /* add a scanline to our icon data */ |
800 |
int y; |
801 |
COLR *scan; |
802 |
{ |
803 |
static short cerr[ICONSIZ]; |
804 |
static int ynext; |
805 |
static char *dp; |
806 |
register int err; |
807 |
register int x, ti; |
808 |
int errp; |
809 |
|
810 |
if (iconheight == 0) { /* initialize */ |
811 |
if (xmax <= ICONSIZ && ymax <= ICONSIZ) { |
812 |
iconwidth = xmax; |
813 |
iconheight = ymax; |
814 |
} else if (xmax > ymax) { |
815 |
iconwidth = ICONSIZ; |
816 |
iconheight = ICONSIZ*ymax/xmax; |
817 |
if (iconheight < 1) |
818 |
iconheight = 1; |
819 |
} else { |
820 |
iconwidth = ICONSIZ*xmax/ymax; |
821 |
if (iconwidth < 1) |
822 |
iconwidth = 1; |
823 |
iconheight = ICONSIZ; |
824 |
} |
825 |
ynext = 0; |
826 |
dp = icondata - 1; |
827 |
} |
828 |
if (y < ynext*ymax/iconheight) /* skip this one */ |
829 |
return; |
830 |
err = 0; |
831 |
for (x = 0; x < iconwidth; x++) { |
832 |
if (!(x&7)) |
833 |
*++dp = 0; |
834 |
errp = err; |
835 |
ti = x*xmax/iconwidth; |
836 |
err += normbright(scan[ti]) + cerr[x]; |
837 |
if (err > 127) |
838 |
err -= 255; |
839 |
else |
840 |
*dp |= 1<<(x&07); |
841 |
err /= 3; |
842 |
cerr[x] = err + errp; |
843 |
} |
844 |
ynext++; |
845 |
} |
846 |
|
847 |
|
848 |
getfull() /* get full (24-bit) data */ |
849 |
{ |
850 |
int y; |
851 |
register unsigned long *dp; |
852 |
register int x; |
853 |
/* set gamma correction */ |
854 |
setcolrgam(gamcor); |
855 |
/* read and convert file */ |
856 |
dp = (unsigned long *)ourdata; |
857 |
for (y = 0; y < ymax; y++) { |
858 |
if (getscan(y) < 0) |
859 |
quiterr("seek error in getfull"); |
860 |
if (scale) |
861 |
shiftcolrs(scanline, xmax, scale); |
862 |
colrs_gambs(scanline, xmax); |
863 |
add2icon(y, scanline); |
864 |
if (ourras->image->blue_mask & 1) |
865 |
for (x = 0; x < xmax; x++) |
866 |
*dp++ = scanline[x][RED] << 16 | |
867 |
scanline[x][GRN] << 8 | |
868 |
scanline[x][BLU] ; |
869 |
else |
870 |
for (x = 0; x < xmax; x++) |
871 |
*dp++ = scanline[x][RED] | |
872 |
scanline[x][GRN] << 8 | |
873 |
scanline[x][BLU] << 16 ; |
874 |
} |
875 |
} |
876 |
|
877 |
|
878 |
getgrey() /* get greyscale data */ |
879 |
{ |
880 |
int y; |
881 |
register unsigned char *dp; |
882 |
register int x; |
883 |
/* set gamma correction */ |
884 |
setcolrgam(gamcor); |
885 |
/* read and convert file */ |
886 |
dp = ourdata; |
887 |
for (y = 0; y < ymax; y++) { |
888 |
if (getscan(y) < 0) |
889 |
quiterr("seek error in getfull"); |
890 |
if (scale) |
891 |
shiftcolrs(scanline, xmax, scale); |
892 |
colrs_gambs(scanline, xmax); |
893 |
add2icon(y, scanline); |
894 |
if (ourvis.colormap_size < 256) |
895 |
for (x = 0; x < xmax; x++) |
896 |
*dp++ = ((long)normbright(scanline[x]) * |
897 |
ourvis.colormap_size + 128) >> 8; |
898 |
else |
899 |
for (x = 0; x < xmax; x++) |
900 |
*dp++ = normbright(scanline[x]); |
901 |
} |
902 |
} |
903 |
|
904 |
|
905 |
scale_rcolors(xr, sf) /* scale color map */ |
906 |
register XRASTER *xr; |
907 |
double sf; |
908 |
{ |
909 |
register int i; |
910 |
long maxv; |
911 |
|
912 |
if (xr->pixels == NULL) |
913 |
return; |
914 |
|
915 |
sf = pow(sf, 1.0/gamcor); |
916 |
maxv = 65535/sf; |
917 |
|
918 |
for (i = xr->ncolors; i--; ) { |
919 |
xr->cdefs[i].red = xr->cdefs[i].red > maxv ? |
920 |
65535 : |
921 |
xr->cdefs[i].red * sf; |
922 |
xr->cdefs[i].green = xr->cdefs[i].green > maxv ? |
923 |
65535 : |
924 |
xr->cdefs[i].green * sf; |
925 |
xr->cdefs[i].blue = xr->cdefs[i].blue > maxv ? |
926 |
65535 : |
927 |
xr->cdefs[i].blue * sf; |
928 |
} |
929 |
XStoreColors(thedisplay, xr->cmap, xr->cdefs, xr->ncolors); |
930 |
} |
931 |
|
932 |
|
933 |
getscan(y) |
934 |
int y; |
935 |
{ |
936 |
if (y != cury) { |
937 |
if (scanpos == NULL || scanpos[y] == -1) |
938 |
return(-1); |
939 |
if (fseek(fin, scanpos[y], 0) == -1) |
940 |
quiterr("fseek error"); |
941 |
cury = y; |
942 |
} else if (scanpos != NULL) |
943 |
scanpos[y] = ftell(fin); |
944 |
|
945 |
if (freadcolrs(scanline, xmax, fin) < 0) |
946 |
quiterr("read error"); |
947 |
|
948 |
cury++; |
949 |
return(0); |
950 |
} |
951 |
|
952 |
|
953 |
picreadline3(y, l3) /* read in 3-byte scanline */ |
954 |
int y; |
955 |
register rgbpixel *l3; |
956 |
{ |
957 |
register int i; |
958 |
/* read scanline */ |
959 |
if (getscan(y) < 0) |
960 |
quiterr("cannot seek for picreadline"); |
961 |
/* convert scanline */ |
962 |
normcolrs(scanline, xmax, scale); |
963 |
add2icon(y, scanline); |
964 |
for (i = 0; i < xmax; i++) { |
965 |
l3[i].r = scanline[i][RED]; |
966 |
l3[i].g = scanline[i][GRN]; |
967 |
l3[i].b = scanline[i][BLU]; |
968 |
} |
969 |
} |
970 |
|
971 |
|
972 |
picwriteline(y, l) /* add 8-bit scanline to image */ |
973 |
int y; |
974 |
pixel *l; |
975 |
{ |
976 |
bcopy((char *)l, (char *)ourdata+y*xmax, xmax); |
977 |
} |
978 |
|
979 |
|
980 |
picreadcm(map) /* do gamma correction */ |
981 |
colormap map; |
982 |
{ |
983 |
extern double pow(); |
984 |
register int i, val; |
985 |
|
986 |
for (i = 0; i < 256; i++) { |
987 |
val = pow((i+0.5)/256.0, 1.0/gamcor) * 256.0; |
988 |
map[0][i] = map[1][i] = map[2][i] = val; |
989 |
} |
990 |
} |
991 |
|
992 |
|
993 |
picwritecm(map) /* handled elsewhere */ |
994 |
colormap map; |
995 |
{ |
996 |
#if 0 |
997 |
register int i; |
998 |
|
999 |
for (i = 0; i < 256; i++) |
1000 |
printf("%d %d %d\n", map[0][i],map[1][i],map[2][i]); |
1001 |
#endif |
1002 |
} |