1 |
/* Copyright (c) 1993 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 <signal.h> |
25 |
#include <X11/Xlib.h> |
26 |
#include <X11/cursorfont.h> |
27 |
#include <X11/Xutil.h> |
28 |
#include <X11/Xatom.h> |
29 |
|
30 |
#include "color.h" |
31 |
#include "view.h" |
32 |
#include "x11raster.h" |
33 |
#include "random.h" |
34 |
#include "resolu.h" |
35 |
|
36 |
#ifdef __alpha |
37 |
#define int4 int |
38 |
#endif |
39 |
#ifndef int4 |
40 |
#define int4 long |
41 |
#endif |
42 |
|
43 |
#define FONTNAME "8x13" /* text font we'll use */ |
44 |
|
45 |
#define CTRL(c) ((c)-'@') |
46 |
|
47 |
#define BORWIDTH 5 /* border width */ |
48 |
|
49 |
#define ICONSIZ (8*10) /* maximum icon dimension (even 8) */ |
50 |
|
51 |
#define ourscreen DefaultScreen(thedisplay) |
52 |
#define ourroot RootWindow(thedisplay,ourscreen) |
53 |
|
54 |
#define revline(x0,y0,x1,y1) XDrawLine(thedisplay,wind,revgc,x0,y0,x1,y1) |
55 |
|
56 |
#define redraw(x,y,w,h) patch_raster(wind,(x)-xoff,(y)-yoff,x,y,w,h,ourras) |
57 |
|
58 |
double gamcor = 2.2; /* gamma correction */ |
59 |
char *gamstr = NULL; /* gamma value override */ |
60 |
|
61 |
int dither = 1; /* dither colors? */ |
62 |
int fast = 0; /* keep picture in Pixmap? */ |
63 |
|
64 |
char *dispname = NULL; /* our display name */ |
65 |
|
66 |
Window wind = 0; /* our output window */ |
67 |
unsigned long ourblack=0, ourwhite=1; /* black and white for this visual */ |
68 |
int maxcolors = 0; /* maximum colors */ |
69 |
int greyscale = 0; /* in grey */ |
70 |
|
71 |
int scale = 0; /* scalefactor; power of two */ |
72 |
|
73 |
int xoff = 0; /* x image offset */ |
74 |
int yoff = 0; /* y image offset */ |
75 |
|
76 |
int parent = 0; /* number of children, -1 if child */ |
77 |
|
78 |
VIEW ourview = STDVIEW; /* image view parameters */ |
79 |
int gotview = 0; /* got parameters from file */ |
80 |
|
81 |
COLR *scanline; /* scan line buffer */ |
82 |
|
83 |
RESOLU inpres; /* input resolution and ordering */ |
84 |
int xmax, ymax; /* picture dimensions */ |
85 |
int width, height; /* window size */ |
86 |
char *fname = NULL; /* input file name */ |
87 |
FILE *fin = stdin; /* input file */ |
88 |
long *scanpos = NULL; /* scan line positions in file */ |
89 |
int cury = 0; /* current scan location */ |
90 |
|
91 |
double exposure = 1.0; /* exposure compensation used */ |
92 |
|
93 |
int wrongformat = 0; /* input in another format? */ |
94 |
|
95 |
GC ourgc; /* standard graphics context */ |
96 |
GC revgc; /* graphics context with GXinvert */ |
97 |
|
98 |
int *ourrank; /* our visual class ranking */ |
99 |
XVisualInfo ourvis; /* our visual */ |
100 |
XRASTER *ourras; /* our stored image */ |
101 |
unsigned char *ourdata; /* our image data */ |
102 |
|
103 |
struct { |
104 |
int xmin, ymin, xsiz, ysiz; |
105 |
} box = {0, 0, 0, 0}; /* current box */ |
106 |
|
107 |
char *geometry = NULL; /* geometry specification */ |
108 |
|
109 |
char icondata[ICONSIZ*ICONSIZ/8]; /* icon bitmap data */ |
110 |
int iconwidth = 0, iconheight = 0; |
111 |
|
112 |
char *progname; |
113 |
|
114 |
char errmsg[128]; |
115 |
|
116 |
extern BYTE clrtab[256][3]; /* global color map */ |
117 |
|
118 |
extern long ftell(); |
119 |
|
120 |
extern char *getenv(); |
121 |
|
122 |
Display *thedisplay; |
123 |
Atom closedownAtom, wmProtocolsAtom; |
124 |
|
125 |
int sigrecv; |
126 |
|
127 |
int onsig() { sigrecv++; } |
128 |
|
129 |
|
130 |
main(argc, argv) |
131 |
int argc; |
132 |
char *argv[]; |
133 |
{ |
134 |
int headline(); |
135 |
int i; |
136 |
int pid; |
137 |
|
138 |
progname = argv[0]; |
139 |
|
140 |
for (i = 1; i < argc; i++) |
141 |
if (argv[i][0] == '-') |
142 |
switch (argv[i][1]) { |
143 |
case 'c': |
144 |
maxcolors = atoi(argv[++i]); |
145 |
break; |
146 |
case 'b': |
147 |
greyscale = !greyscale; |
148 |
break; |
149 |
case 'm': |
150 |
maxcolors = 2; |
151 |
break; |
152 |
case 'd': |
153 |
if (argv[i][2] == 'i') |
154 |
dispname = argv[++i]; |
155 |
else |
156 |
dither = !dither; |
157 |
break; |
158 |
case 'f': |
159 |
fast = !fast; |
160 |
break; |
161 |
case 'e': |
162 |
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
163 |
goto userr; |
164 |
scale = atoi(argv[++i]); |
165 |
break; |
166 |
case 'g': |
167 |
if (argv[i][2] == 'e') |
168 |
geometry = argv[++i]; |
169 |
else |
170 |
gamstr = argv[++i]; |
171 |
break; |
172 |
default: |
173 |
goto userr; |
174 |
} |
175 |
else if (argv[i][0] == '=') |
176 |
geometry = argv[i]; |
177 |
else |
178 |
break; |
179 |
|
180 |
if (i > argc) |
181 |
goto userr; |
182 |
while (i < argc-1) { |
183 |
sigrecv = 0; |
184 |
signal(SIGCONT, onsig); |
185 |
if ((pid=fork()) == 0) { /* a child for each picture */ |
186 |
parent = -1; |
187 |
break; |
188 |
} |
189 |
if (pid < 0) |
190 |
quiterr("fork failed"); |
191 |
parent++; |
192 |
while (!sigrecv) |
193 |
pause(); /* wait for wake-up call */ |
194 |
i++; |
195 |
} |
196 |
if (i < argc) { /* open picture file */ |
197 |
fname = argv[i]; |
198 |
fin = fopen(fname, "r"); |
199 |
if (fin == NULL) |
200 |
quiterr("cannot open picture file"); |
201 |
} |
202 |
/* get header */ |
203 |
getheader(fin, headline, NULL); |
204 |
/* get picture dimensions */ |
205 |
if (wrongformat || !fgetsresolu(&inpres, fin)) |
206 |
quiterr("bad picture format"); |
207 |
xmax = scanlen(&inpres); |
208 |
ymax = numscans(&inpres); |
209 |
/* set view parameters */ |
210 |
if (gotview && setview(&ourview) != NULL) |
211 |
gotview = 0; |
212 |
if ((scanline = (COLR *)malloc(xmax*sizeof(COLR))) == NULL) |
213 |
quiterr("out of memory"); |
214 |
|
215 |
init(argc, argv); /* get file and open window */ |
216 |
|
217 |
if (parent < 0) { |
218 |
kill(getppid(), SIGCONT); /* signal parent if child */ |
219 |
sigrecv--; |
220 |
} |
221 |
for ( ; ; ) |
222 |
getevent(); /* main loop */ |
223 |
userr: |
224 |
fprintf(stderr, |
225 |
"Usage: %s [-di disp][[-ge] spec][-b][-m][-d][-f][-c nclrs][-e +/-stops][-g gamcor] pic ..\n", |
226 |
progname); |
227 |
exit(1); |
228 |
} |
229 |
|
230 |
|
231 |
headline(s) /* get relevant info from header */ |
232 |
char *s; |
233 |
{ |
234 |
char fmt[32]; |
235 |
|
236 |
if (isexpos(s)) |
237 |
exposure *= exposval(s); |
238 |
else if (isformat(s)) { |
239 |
formatval(fmt, s); |
240 |
wrongformat = strcmp(fmt, COLRFMT); |
241 |
} else if (isview(s) && sscanview(&ourview, s) > 0) |
242 |
gotview++; |
243 |
} |
244 |
|
245 |
|
246 |
init(argc, argv) /* get data and open window */ |
247 |
int argc; |
248 |
char **argv; |
249 |
{ |
250 |
XSetWindowAttributes ourwinattr; |
251 |
XClassHint xclshints; |
252 |
XWMHints xwmhints; |
253 |
XSizeHints xszhints; |
254 |
XTextProperty windowName, iconName; |
255 |
XGCValues xgcv; |
256 |
char *name; |
257 |
register int i; |
258 |
|
259 |
if (fname != NULL) { |
260 |
scanpos = (long *)malloc(ymax*sizeof(long)); |
261 |
if (scanpos == NULL) |
262 |
quiterr("out of memory"); |
263 |
for (i = 0; i < ymax; i++) |
264 |
scanpos[i] = -1; |
265 |
name = fname; |
266 |
} else |
267 |
name = progname; |
268 |
/* remove directory prefix from name */ |
269 |
for (i = strlen(name); i-- > 0; ) |
270 |
if (name[i] == '/') |
271 |
break; |
272 |
name += i+1; |
273 |
if ((thedisplay = XOpenDisplay(dispname)) == NULL) |
274 |
quiterr("cannot open display"); |
275 |
/* set gamma value */ |
276 |
if (gamstr == NULL) /* get it from the X server */ |
277 |
gamstr = XGetDefault(thedisplay, "radiance", "gamma"); |
278 |
if (gamstr == NULL) /* get it from the environment */ |
279 |
gamstr = getenv("GAMMA"); |
280 |
if (gamstr != NULL) |
281 |
gamcor = atof(gamstr); |
282 |
/* get best visual for default screen */ |
283 |
getbestvis(); |
284 |
/* store image */ |
285 |
getras(); |
286 |
/* get size and position */ |
287 |
xszhints.flags = 0; |
288 |
xszhints.width = xmax; xszhints.height = ymax; |
289 |
if (geometry != NULL) { |
290 |
i = XParseGeometry(geometry, &xszhints.x, &xszhints.y, |
291 |
(unsigned *)&xszhints.width, |
292 |
(unsigned *)&xszhints.height); |
293 |
if ((i&(WidthValue|HeightValue)) == (WidthValue|HeightValue)) |
294 |
xszhints.flags |= USSize; |
295 |
else |
296 |
xszhints.flags |= PSize; |
297 |
if ((i&(XValue|YValue)) == (XValue|YValue)) { |
298 |
xszhints.flags |= USPosition; |
299 |
if (i & XNegative) |
300 |
xszhints.x += DisplayWidth(thedisplay, |
301 |
ourscreen)-1-xszhints.width-2*BORWIDTH; |
302 |
if (i & YNegative) |
303 |
xszhints.y += DisplayHeight(thedisplay, |
304 |
ourscreen)-1-xszhints.height-2*BORWIDTH; |
305 |
} |
306 |
} |
307 |
/* open window */ |
308 |
ourwinattr.border_pixel = ourwhite; |
309 |
ourwinattr.background_pixel = ourblack; |
310 |
ourwinattr.colormap = XCreateColormap(thedisplay, ourroot, |
311 |
ourvis.visual, AllocNone); |
312 |
ourwinattr.event_mask = ExposureMask|KeyPressMask|ButtonPressMask| |
313 |
ButtonReleaseMask|ButtonMotionMask|StructureNotifyMask; |
314 |
ourwinattr.cursor = XCreateFontCursor(thedisplay, XC_diamond_cross); |
315 |
wind = XCreateWindow(thedisplay, ourroot, xszhints.x, xszhints.y, |
316 |
xszhints.width, xszhints.height, BORWIDTH, |
317 |
ourvis.depth, InputOutput, ourvis.visual, CWEventMask| |
318 |
CWCursor|CWBackPixel|CWBorderPixel|CWColormap, &ourwinattr); |
319 |
if (wind == 0) |
320 |
quiterr("cannot create window"); |
321 |
width = xmax; |
322 |
height = ymax; |
323 |
/* prepare graphics drawing context */ |
324 |
if ((xgcv.font = XLoadFont(thedisplay, FONTNAME)) == 0) |
325 |
quiterr("cannot get font"); |
326 |
xgcv.foreground = ourblack; |
327 |
xgcv.background = ourwhite; |
328 |
ourgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground| |
329 |
GCFont, &xgcv); |
330 |
xgcv.function = GXinvert; |
331 |
revgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground| |
332 |
GCFunction, &xgcv); |
333 |
|
334 |
/* set up the window manager */ |
335 |
xwmhints.flags = InputHint|IconPixmapHint; |
336 |
xwmhints.input = True; |
337 |
xwmhints.icon_pixmap = XCreateBitmapFromData(thedisplay, |
338 |
wind, icondata, iconwidth, iconheight); |
339 |
|
340 |
windowName.encoding = iconName.encoding = XA_STRING; |
341 |
windowName.format = iconName.format = 8; |
342 |
windowName.value = (u_char *)name; |
343 |
windowName.nitems = strlen(windowName.value); |
344 |
iconName.value = (u_char *)name; |
345 |
iconName.nitems = strlen(windowName.value); |
346 |
|
347 |
xclshints.res_name = NULL; |
348 |
xclshints.res_class = "Ximage"; |
349 |
XSetWMProperties(thedisplay, wind, &windowName, &iconName, |
350 |
argv, argc, &xszhints, &xwmhints, &xclshints); |
351 |
closedownAtom = XInternAtom(thedisplay, "WM_DELETE_WINDOW", False); |
352 |
wmProtocolsAtom = XInternAtom(thedisplay, "WM_PROTOCOLS", False); |
353 |
XSetWMProtocols(thedisplay, wind, &closedownAtom, 1); |
354 |
|
355 |
XMapWindow(thedisplay, wind); |
356 |
return; |
357 |
} /* end of init */ |
358 |
|
359 |
|
360 |
quiterr(err) /* print message and exit */ |
361 |
char *err; |
362 |
{ |
363 |
register int es; |
364 |
int cs; |
365 |
|
366 |
if (es = err != NULL) |
367 |
fprintf(stderr, "%s: %s: %s\n", progname, |
368 |
fname==NULL?"<stdin>":fname, err); |
369 |
if (parent > 0 & wind != 0) { |
370 |
XDestroyWindow(thedisplay, wind); |
371 |
XFlush(thedisplay); |
372 |
} else if (parent < 0 & sigrecv == 0) |
373 |
kill(getppid(), SIGCONT); |
374 |
while (parent > 0 && wait(&cs) != -1) { /* wait for any children */ |
375 |
if (es == 0) |
376 |
es = cs>>8 & 0xff; |
377 |
parent--; |
378 |
} |
379 |
exit(es); |
380 |
} |
381 |
|
382 |
|
383 |
static int |
384 |
viscmp(v1,v2) /* compare visual to see which is better, descending */ |
385 |
register XVisualInfo *v1, *v2; |
386 |
{ |
387 |
int bad1 = 0, bad2 = 0; |
388 |
register int *rp; |
389 |
|
390 |
if (v1->class == v2->class) { |
391 |
if (v1->class == TrueColor || v1->class == DirectColor) { |
392 |
/* prefer 24-bit to 32-bit */ |
393 |
if (v1->depth == 24 && v2->depth == 32) |
394 |
return(-1); |
395 |
if (v1->depth == 32 && v2->depth == 24) |
396 |
return(1); |
397 |
return(0); |
398 |
} |
399 |
/* don't be too greedy */ |
400 |
if (maxcolors <= 1<<v1->depth && maxcolors <= 1<<v2->depth) |
401 |
return(v1->depth - v2->depth); |
402 |
return(v2->depth - v1->depth); |
403 |
} |
404 |
/* prefer Pseudo when < 24-bit */ |
405 |
if ((v1->class == TrueColor || v1->class == DirectColor) && |
406 |
v1->depth < 24) |
407 |
bad1 = 1; |
408 |
if ((v2->class == TrueColor || v2->class == DirectColor) && |
409 |
v2->depth < 24) |
410 |
bad2 = -1; |
411 |
if (bad1 | bad2) |
412 |
return(bad1+bad2); |
413 |
/* otherwise, use class ranking */ |
414 |
for (rp = ourrank; *rp != -1; rp++) { |
415 |
if (v1->class == *rp) |
416 |
return(-1); |
417 |
if (v2->class == *rp) |
418 |
return(1); |
419 |
} |
420 |
return(0); |
421 |
} |
422 |
|
423 |
|
424 |
getbestvis() /* get the best visual for this screen */ |
425 |
{ |
426 |
#ifdef DEBUG |
427 |
static char vistype[][12] = { |
428 |
"StaticGray", |
429 |
"GrayScale", |
430 |
"StaticColor", |
431 |
"PseudoColor", |
432 |
"TrueColor", |
433 |
"DirectColor" |
434 |
}; |
435 |
#endif |
436 |
static int rankings[3][6] = { |
437 |
{TrueColor,DirectColor,PseudoColor,GrayScale,StaticGray,-1}, |
438 |
{PseudoColor,GrayScale,StaticGray,-1}, |
439 |
{PseudoColor,GrayScale,StaticGray,-1} |
440 |
}; |
441 |
XVisualInfo *xvi; |
442 |
int vismatched; |
443 |
register int i, j; |
444 |
|
445 |
if (greyscale) { |
446 |
ourrank = rankings[2]; |
447 |
if (maxcolors < 2) maxcolors = 256; |
448 |
} else if (maxcolors >= 2 && maxcolors <= 256) |
449 |
ourrank = rankings[1]; |
450 |
else { |
451 |
ourrank = rankings[0]; |
452 |
maxcolors = 256; |
453 |
} |
454 |
/* find best visual */ |
455 |
ourvis.screen = ourscreen; |
456 |
xvi = XGetVisualInfo(thedisplay,VisualScreenMask,&ourvis,&vismatched); |
457 |
if (xvi == NULL) |
458 |
quiterr("no visuals for this screen!"); |
459 |
#ifdef DEBUG |
460 |
fprintf(stderr, "Supported visuals:\n"); |
461 |
for (i = 0; i < vismatched; i++) |
462 |
fprintf(stderr, "\ttype %s, depth %d\n", |
463 |
vistype[xvi[i].class], xvi[i].depth); |
464 |
#endif |
465 |
for (i = 0, j = 1; j < vismatched; j++) |
466 |
if (viscmp(&xvi[i],&xvi[j]) > 0) |
467 |
i = j; |
468 |
/* compare to least acceptable */ |
469 |
for (j = 0; ourrank[j++] != -1; ) |
470 |
; |
471 |
ourvis.class = ourrank[--j]; |
472 |
ourvis.depth = 1; |
473 |
if (viscmp(&xvi[i],&ourvis) > 0) |
474 |
quiterr("inadequate visuals on this screen"); |
475 |
/* OK, we'll use it */ |
476 |
copystruct(&ourvis, &xvi[i]); |
477 |
#ifdef DEBUG |
478 |
fprintf(stderr, "Selected visual type %s, depth %d\n", |
479 |
vistype[ourvis.class], ourvis.depth); |
480 |
#endif |
481 |
/* make appropriate adjustments */ |
482 |
if (ourvis.class == GrayScale || ourvis.class == StaticGray) |
483 |
greyscale = 1; |
484 |
if (ourvis.depth <= 8 && ourvis.colormap_size < maxcolors) |
485 |
maxcolors = ourvis.colormap_size; |
486 |
if (ourvis.class == StaticGray) { |
487 |
ourblack = 0; |
488 |
ourwhite = 255; |
489 |
} else if (ourvis.class == PseudoColor) { |
490 |
ourblack = BlackPixel(thedisplay,ourscreen); |
491 |
ourwhite = WhitePixel(thedisplay,ourscreen); |
492 |
if ((ourblack|ourwhite) & ~255L) { |
493 |
ourblack = 0; |
494 |
ourwhite = 1; |
495 |
} |
496 |
if (maxcolors > 4) |
497 |
maxcolors -= 2; |
498 |
} else { |
499 |
ourblack = 0; |
500 |
ourwhite = ourvis.red_mask|ourvis.green_mask|ourvis.blue_mask; |
501 |
} |
502 |
XFree((char *)xvi); |
503 |
} |
504 |
|
505 |
|
506 |
getras() /* get raster file */ |
507 |
{ |
508 |
XVisualInfo vinfo; |
509 |
|
510 |
if (maxcolors <= 2) { /* monochrome */ |
511 |
ourdata = (unsigned char *)malloc(ymax*((xmax+7)/8)); |
512 |
if (ourdata == NULL) |
513 |
goto fail; |
514 |
ourras = make_raster(thedisplay, &ourvis, 1, ourdata, |
515 |
xmax, ymax, 8); |
516 |
if (ourras == NULL) |
517 |
goto fail; |
518 |
getmono(); |
519 |
} else if (ourvis.class == TrueColor | ourvis.class == DirectColor) { |
520 |
ourdata = (unsigned char *)malloc(sizeof(int4)*xmax*ymax); |
521 |
if (ourdata == NULL) |
522 |
goto fail; |
523 |
ourras = make_raster(thedisplay, &ourvis, sizeof(int4)*8, |
524 |
ourdata, xmax, ymax, 32); |
525 |
if (ourras == NULL) |
526 |
goto fail; |
527 |
getfull(); |
528 |
} else { |
529 |
ourdata = (unsigned char *)malloc(xmax*ymax); |
530 |
if (ourdata == NULL) |
531 |
goto fail; |
532 |
ourras = make_raster(thedisplay, &ourvis, 8, ourdata, |
533 |
xmax, ymax, 8); |
534 |
if (ourras == NULL) |
535 |
goto fail; |
536 |
if (greyscale | ourvis.class == StaticGray) |
537 |
getgrey(); |
538 |
else |
539 |
getmapped(); |
540 |
if (ourvis.class != StaticGray && !init_rcolors(ourras,clrtab)) |
541 |
goto fail; |
542 |
} |
543 |
return; |
544 |
fail: |
545 |
quiterr("could not create raster image"); |
546 |
} |
547 |
|
548 |
|
549 |
getevent() /* process the next event */ |
550 |
{ |
551 |
XEvent xev; |
552 |
|
553 |
XNextEvent(thedisplay, &xev); |
554 |
switch ((int)xev.type) { |
555 |
case KeyPress: |
556 |
docom(&xev.xkey); |
557 |
break; |
558 |
case ConfigureNotify: |
559 |
width = xev.xconfigure.width; |
560 |
height = xev.xconfigure.height; |
561 |
break; |
562 |
case MapNotify: |
563 |
map_rcolors(ourras, wind); |
564 |
if (fast) |
565 |
make_rpixmap(ourras, wind); |
566 |
break; |
567 |
case UnmapNotify: |
568 |
if (!fast) |
569 |
unmap_rcolors(ourras); |
570 |
break; |
571 |
case Expose: |
572 |
redraw(xev.xexpose.x, xev.xexpose.y, |
573 |
xev.xexpose.width, xev.xexpose.height); |
574 |
break; |
575 |
case ButtonPress: |
576 |
if (xev.xbutton.state & (ShiftMask|ControlMask)) |
577 |
moveimage(&xev.xbutton); |
578 |
else if (xev.xbutton.button == Button2) |
579 |
traceray(xev.xbutton.x, xev.xbutton.y); |
580 |
else |
581 |
getbox(&xev.xbutton); |
582 |
break; |
583 |
case ClientMessage: |
584 |
if ((xev.xclient.message_type == wmProtocolsAtom) && |
585 |
(xev.xclient.data.l[0] == closedownAtom)) |
586 |
quiterr(NULL); |
587 |
break; |
588 |
} |
589 |
} |
590 |
|
591 |
|
592 |
traceray(xpos, ypos) /* print ray corresponding to pixel */ |
593 |
int xpos, ypos; |
594 |
{ |
595 |
FLOAT hv[2]; |
596 |
FVECT rorg, rdir; |
597 |
|
598 |
if (!gotview) { /* no view, no can do */ |
599 |
XBell(thedisplay, 0); |
600 |
return(-1); |
601 |
} |
602 |
pix2loc(hv, &inpres, xpos-xoff, ypos-yoff); |
603 |
if (viewray(rorg, rdir, &ourview, hv[0], hv[1]) < 0) |
604 |
return(-1); |
605 |
printf("%e %e %e ", rorg[0], rorg[1], rorg[2]); |
606 |
printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]); |
607 |
fflush(stdout); |
608 |
return(0); |
609 |
} |
610 |
|
611 |
|
612 |
docom(ekey) /* execute command */ |
613 |
XKeyPressedEvent *ekey; |
614 |
{ |
615 |
char buf[80]; |
616 |
COLOR cval; |
617 |
XColor cvx; |
618 |
int com, n; |
619 |
double comp; |
620 |
FLOAT hv[2]; |
621 |
|
622 |
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
623 |
if (n == 0) |
624 |
return(0); |
625 |
com = buf[0]; |
626 |
switch (com) { /* interpret command */ |
627 |
case 'q': |
628 |
case 'Q': |
629 |
case CTRL('D'): /* quit */ |
630 |
quiterr(NULL); |
631 |
case '\n': |
632 |
case '\r': |
633 |
case 'l': |
634 |
case 'c': /* value */ |
635 |
if (avgbox(cval) == -1) |
636 |
return(-1); |
637 |
switch (com) { |
638 |
case '\n': |
639 |
case '\r': /* radiance */ |
640 |
sprintf(buf, "%.3f", intens(cval)/exposure); |
641 |
break; |
642 |
case 'l': /* luminance */ |
643 |
sprintf(buf, "%.0fL", luminance(cval)/exposure); |
644 |
break; |
645 |
case 'c': /* color */ |
646 |
comp = pow(2.0, (double)scale); |
647 |
sprintf(buf, "(%.2f,%.2f,%.2f)", |
648 |
colval(cval,RED)*comp, |
649 |
colval(cval,GRN)*comp, |
650 |
colval(cval,BLU)*comp); |
651 |
break; |
652 |
} |
653 |
XDrawImageString(thedisplay, wind, ourgc, |
654 |
box.xmin, box.ymin+box.ysiz, buf, strlen(buf)); |
655 |
return(0); |
656 |
case 'i': /* identify (contour) */ |
657 |
if (ourras->pixels == NULL) |
658 |
return(-1); |
659 |
n = ourdata[ekey->x-xoff+xmax*(ekey->y-yoff)]; |
660 |
n = ourras->pmap[n]; |
661 |
cvx.pixel = ourras->cdefs[n].pixel; |
662 |
cvx.red = random() & 65535; |
663 |
cvx.green = random() & 65535; |
664 |
cvx.blue = random() & 65535; |
665 |
cvx.flags = DoRed|DoGreen|DoBlue; |
666 |
XStoreColor(thedisplay, ourras->cmap, &cvx); |
667 |
return(0); |
668 |
case 'p': /* position */ |
669 |
pix2loc(hv, &inpres, ekey->x-xoff, ekey->y-yoff); |
670 |
sprintf(buf, "(%d,%d)", (int)(hv[0]*inpres.xr), |
671 |
(int)(hv[1]*inpres.yr)); |
672 |
XDrawImageString(thedisplay, wind, ourgc, ekey->x, ekey->y, |
673 |
buf, strlen(buf)); |
674 |
return(0); |
675 |
case 't': /* trace */ |
676 |
return(traceray(ekey->x, ekey->y)); |
677 |
case '=': /* adjust exposure */ |
678 |
case '@': /* adaptation level */ |
679 |
if (avgbox(cval) == -1) |
680 |
return(-1); |
681 |
comp = bright(cval); |
682 |
if (comp < 1e-20) { |
683 |
XBell(thedisplay, 0); |
684 |
return(-1); |
685 |
} |
686 |
if (com == '@') |
687 |
comp = 106./exposure/ |
688 |
pow(1.219+pow(comp*WHTEFFICACY/exposure,.4),2.5); |
689 |
else |
690 |
comp = .5/comp; |
691 |
comp = log(comp)/.69315 - scale; |
692 |
n = comp < 0 ? comp-.5 : comp+.5 ; /* round */ |
693 |
if (n == 0) |
694 |
return(0); |
695 |
scale_rcolors(ourras, pow(2.0, (double)n)); |
696 |
scale += n; |
697 |
sprintf(buf, "%+d", scale); |
698 |
XDrawImageString(thedisplay, wind, ourgc, |
699 |
box.xmin, box.ymin+box.ysiz, buf, strlen(buf)); |
700 |
XFlush(thedisplay); |
701 |
free(ourdata); |
702 |
free_raster(ourras); |
703 |
getras(); |
704 |
/* fall through */ |
705 |
case CTRL('R'): /* redraw */ |
706 |
case CTRL('L'): |
707 |
unmap_rcolors(ourras); |
708 |
XClearWindow(thedisplay, wind); |
709 |
map_rcolors(ourras, wind); |
710 |
if (fast) |
711 |
make_rpixmap(ourras, wind); |
712 |
redraw(0, 0, width, height); |
713 |
return(0); |
714 |
case 'f': /* turn on fast redraw */ |
715 |
fast = 1; |
716 |
make_rpixmap(ourras, wind); |
717 |
return(0); |
718 |
case 'F': /* turn off fast redraw */ |
719 |
fast = 0; |
720 |
free_rpixmap(ourras); |
721 |
return(0); |
722 |
case '0': /* recenter origin */ |
723 |
if (xoff == 0 & yoff == 0) |
724 |
return(0); |
725 |
xoff = yoff = 0; |
726 |
XClearWindow(thedisplay, wind); |
727 |
redraw(0, 0, width, height); |
728 |
return(0); |
729 |
case ' ': /* clear */ |
730 |
redraw(box.xmin, box.ymin, box.xsiz, box.ysiz); |
731 |
return(0); |
732 |
default: |
733 |
XBell(thedisplay, 0); |
734 |
return(-1); |
735 |
} |
736 |
} |
737 |
|
738 |
|
739 |
moveimage(ebut) /* shift the image */ |
740 |
XButtonPressedEvent *ebut; |
741 |
{ |
742 |
XEvent e; |
743 |
int mxo, myo; |
744 |
|
745 |
XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e); |
746 |
while (e.type == MotionNotify) { |
747 |
mxo = e.xmotion.x; |
748 |
myo = e.xmotion.y; |
749 |
revline(ebut->x, ebut->y, mxo, myo); |
750 |
revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y, |
751 |
xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax); |
752 |
XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e); |
753 |
revline(ebut->x, ebut->y, mxo, myo); |
754 |
revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y, |
755 |
xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax); |
756 |
} |
757 |
xoff += e.xbutton.x - ebut->x; |
758 |
yoff += e.xbutton.y - ebut->y; |
759 |
XClearWindow(thedisplay, wind); |
760 |
redraw(0, 0, width, height); |
761 |
} |
762 |
|
763 |
|
764 |
getbox(ebut) /* get new box */ |
765 |
XButtonPressedEvent *ebut; |
766 |
{ |
767 |
XEvent e; |
768 |
|
769 |
XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e); |
770 |
while (e.type == MotionNotify) { |
771 |
revbox(ebut->x, ebut->y, box.xmin = e.xmotion.x, box.ymin = e.xmotion.y); |
772 |
XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e); |
773 |
revbox(ebut->x, ebut->y, box.xmin, box.ymin); |
774 |
} |
775 |
box.xmin = e.xbutton.x<0 ? 0 : (e.xbutton.x>=width ? width-1 : e.xbutton.x); |
776 |
box.ymin = e.xbutton.y<0 ? 0 : (e.xbutton.y>=height ? height-1 : e.xbutton.y); |
777 |
if (box.xmin > ebut->x) { |
778 |
box.xsiz = box.xmin - ebut->x + 1; |
779 |
box.xmin = ebut->x; |
780 |
} else { |
781 |
box.xsiz = ebut->x - box.xmin + 1; |
782 |
} |
783 |
if (box.ymin > ebut->y) { |
784 |
box.ysiz = box.ymin - ebut->y + 1; |
785 |
box.ymin = ebut->y; |
786 |
} else { |
787 |
box.ysiz = ebut->y - box.ymin + 1; |
788 |
} |
789 |
} |
790 |
|
791 |
|
792 |
revbox(x0, y0, x1, y1) /* draw box with reversed lines */ |
793 |
int x0, y0, x1, y1; |
794 |
{ |
795 |
revline(x0, y0, x1, y0); |
796 |
revline(x0, y1, x1, y1); |
797 |
revline(x0, y0, x0, y1); |
798 |
revline(x1, y0, x1, y1); |
799 |
} |
800 |
|
801 |
|
802 |
avgbox(clr) /* average color over current box */ |
803 |
COLOR clr; |
804 |
{ |
805 |
static COLOR lc; |
806 |
static int ll, lr, lt, lb; |
807 |
int left, right, top, bottom; |
808 |
int y; |
809 |
double d; |
810 |
COLOR ctmp; |
811 |
register int x; |
812 |
|
813 |
setcolor(clr, 0.0, 0.0, 0.0); |
814 |
left = box.xmin - xoff; |
815 |
right = left + box.xsiz; |
816 |
if (left < 0) |
817 |
left = 0; |
818 |
if (right > xmax) |
819 |
right = xmax; |
820 |
if (left >= right) |
821 |
return(-1); |
822 |
top = box.ymin - yoff; |
823 |
bottom = top + box.ysiz; |
824 |
if (top < 0) |
825 |
top = 0; |
826 |
if (bottom > ymax) |
827 |
bottom = ymax; |
828 |
if (top >= bottom) |
829 |
return(-1); |
830 |
if (left == ll && right == lr && top == lt && bottom == lb) { |
831 |
copycolor(clr, lc); |
832 |
return(0); |
833 |
} |
834 |
for (y = top; y < bottom; y++) { |
835 |
if (getscan(y) == -1) |
836 |
return(-1); |
837 |
for (x = left; x < right; x++) { |
838 |
colr_color(ctmp, scanline[x]); |
839 |
addcolor(clr, ctmp); |
840 |
} |
841 |
} |
842 |
d = 1.0/((right-left)*(bottom-top)); |
843 |
scalecolor(clr, d); |
844 |
ll = left; lr = right; lt = top; lb = bottom; |
845 |
copycolor(lc, clr); |
846 |
return(0); |
847 |
} |
848 |
|
849 |
|
850 |
getmono() /* get monochrome data */ |
851 |
{ |
852 |
register unsigned char *dp; |
853 |
register int x, err; |
854 |
int y, errp; |
855 |
short *cerr; |
856 |
|
857 |
if ((cerr = (short *)calloc(xmax,sizeof(short))) == NULL) |
858 |
quiterr("out of memory in getmono"); |
859 |
dp = ourdata - 1; |
860 |
for (y = 0; y < ymax; y++) { |
861 |
getscan(y); |
862 |
add2icon(y, scanline); |
863 |
normcolrs(scanline, xmax, scale); |
864 |
err = 0; |
865 |
for (x = 0; x < xmax; x++) { |
866 |
if (!(x&7)) |
867 |
*++dp = 0; |
868 |
errp = err; |
869 |
err += normbright(scanline[x]) + cerr[x]; |
870 |
if (err > 127) |
871 |
err -= 255; |
872 |
else |
873 |
*dp |= 1<<(7-(x&07)); |
874 |
err /= 3; |
875 |
cerr[x] = err + errp; |
876 |
} |
877 |
} |
878 |
free((char *)cerr); |
879 |
} |
880 |
|
881 |
|
882 |
add2icon(y, scan) /* add a scanline to our icon data */ |
883 |
int y; |
884 |
COLR *scan; |
885 |
{ |
886 |
static short cerr[ICONSIZ]; |
887 |
static int ynext; |
888 |
static char *dp; |
889 |
COLR clr; |
890 |
register int err; |
891 |
register int x, ti; |
892 |
int errp; |
893 |
|
894 |
if (iconheight == 0) { /* initialize */ |
895 |
if (xmax <= ICONSIZ && ymax <= ICONSIZ) { |
896 |
iconwidth = xmax; |
897 |
iconheight = ymax; |
898 |
} else if (xmax > ymax) { |
899 |
iconwidth = ICONSIZ; |
900 |
iconheight = ICONSIZ*ymax/xmax; |
901 |
if (iconheight < 1) |
902 |
iconheight = 1; |
903 |
} else { |
904 |
iconwidth = ICONSIZ*xmax/ymax; |
905 |
if (iconwidth < 1) |
906 |
iconwidth = 1; |
907 |
iconheight = ICONSIZ; |
908 |
} |
909 |
ynext = 0; |
910 |
dp = icondata - 1; |
911 |
} |
912 |
if (y < ynext*ymax/iconheight) /* skip this one */ |
913 |
return; |
914 |
err = 0; |
915 |
for (x = 0; x < iconwidth; x++) { |
916 |
if (!(x&7)) |
917 |
*++dp = 0; |
918 |
errp = err; |
919 |
ti = x*xmax/iconwidth; |
920 |
copycolr(clr, scan[ti]); |
921 |
normcolrs(clr, 1, scale); |
922 |
err += normbright(clr) + cerr[x]; |
923 |
if (err > 127) |
924 |
err -= 255; |
925 |
else |
926 |
*dp |= 1<<(x&07); |
927 |
err /= 3; |
928 |
cerr[x] = err + errp; |
929 |
} |
930 |
ynext++; |
931 |
} |
932 |
|
933 |
|
934 |
getfull() /* get full (24-bit) data */ |
935 |
{ |
936 |
int y; |
937 |
register unsigned int4 *dp; |
938 |
register int x; |
939 |
/* set gamma correction */ |
940 |
setcolrgam(gamcor); |
941 |
/* read and convert file */ |
942 |
dp = (unsigned int4 *)ourdata; |
943 |
for (y = 0; y < ymax; y++) { |
944 |
getscan(y); |
945 |
add2icon(y, scanline); |
946 |
if (scale) |
947 |
shiftcolrs(scanline, xmax, scale); |
948 |
colrs_gambs(scanline, xmax); |
949 |
if (ourras->image->blue_mask & 1) |
950 |
for (x = 0; x < xmax; x++) |
951 |
*dp++ = (unsigned int4)scanline[x][RED] << 16 | |
952 |
(unsigned int4)scanline[x][GRN] << 8 | |
953 |
(unsigned int4)scanline[x][BLU] ; |
954 |
else |
955 |
for (x = 0; x < xmax; x++) |
956 |
*dp++ = (unsigned int4)scanline[x][RED] | |
957 |
(unsigned int4)scanline[x][GRN] << 8 | |
958 |
(unsigned int4)scanline[x][BLU] << 16 ; |
959 |
} |
960 |
} |
961 |
|
962 |
|
963 |
getgrey() /* get greyscale data */ |
964 |
{ |
965 |
int y; |
966 |
register unsigned char *dp; |
967 |
register int x; |
968 |
/* set gamma correction */ |
969 |
setcolrgam(gamcor); |
970 |
/* read and convert file */ |
971 |
dp = ourdata; |
972 |
for (y = 0; y < ymax; y++) { |
973 |
getscan(y); |
974 |
add2icon(y, scanline); |
975 |
if (scale) |
976 |
shiftcolrs(scanline, xmax, scale); |
977 |
for (x = 0; x < xmax; x++) |
978 |
scanline[x][GRN] = normbright(scanline[x]); |
979 |
colrs_gambs(scanline, xmax); |
980 |
if (maxcolors < 256) |
981 |
for (x = 0; x < xmax; x++) |
982 |
*dp++ = ((long)scanline[x][GRN] * |
983 |
maxcolors + maxcolors/2) >> 8; |
984 |
else |
985 |
for (x = 0; x < xmax; x++) |
986 |
*dp++ = scanline[x][GRN]; |
987 |
} |
988 |
for (x = 0; x < maxcolors; x++) |
989 |
clrtab[x][RED] = clrtab[x][GRN] = |
990 |
clrtab[x][BLU] = ((long)x*256 + 128)/maxcolors; |
991 |
} |
992 |
|
993 |
|
994 |
getmapped() /* get color-mapped data */ |
995 |
{ |
996 |
int y; |
997 |
/* make sure we can do it first */ |
998 |
if (fname == NULL) |
999 |
quiterr("cannot map colors from standard input"); |
1000 |
/* set gamma correction */ |
1001 |
setcolrgam(gamcor); |
1002 |
/* make histogram */ |
1003 |
new_histo(); |
1004 |
for (y = 0; y < ymax; y++) { |
1005 |
if (getscan(y) < 0) |
1006 |
break; |
1007 |
add2icon(y, scanline); |
1008 |
if (scale) |
1009 |
shiftcolrs(scanline, xmax, scale); |
1010 |
colrs_gambs(scanline, xmax); |
1011 |
cnt_colrs(scanline, xmax); |
1012 |
} |
1013 |
/* map pixels */ |
1014 |
if (!new_clrtab(maxcolors)) |
1015 |
quiterr("cannot create color map"); |
1016 |
for (y = 0; y < ymax; y++) { |
1017 |
getscan(y); |
1018 |
if (scale) |
1019 |
shiftcolrs(scanline, xmax, scale); |
1020 |
colrs_gambs(scanline, xmax); |
1021 |
if (dither) |
1022 |
dith_colrs(ourdata+y*xmax, scanline, xmax); |
1023 |
else |
1024 |
map_colrs(ourdata+y*xmax, scanline, xmax); |
1025 |
} |
1026 |
} |
1027 |
|
1028 |
|
1029 |
scale_rcolors(xr, sf) /* scale color map */ |
1030 |
register XRASTER *xr; |
1031 |
double sf; |
1032 |
{ |
1033 |
register int i; |
1034 |
long maxv; |
1035 |
|
1036 |
if (xr->pixels == NULL) |
1037 |
return; |
1038 |
|
1039 |
sf = pow(sf, 1.0/gamcor); |
1040 |
maxv = 65535/sf; |
1041 |
|
1042 |
for (i = xr->ncolors; i--; ) { |
1043 |
xr->cdefs[i].red = xr->cdefs[i].red > maxv ? |
1044 |
65535 : |
1045 |
xr->cdefs[i].red * sf; |
1046 |
xr->cdefs[i].green = xr->cdefs[i].green > maxv ? |
1047 |
65535 : |
1048 |
xr->cdefs[i].green * sf; |
1049 |
xr->cdefs[i].blue = xr->cdefs[i].blue > maxv ? |
1050 |
65535 : |
1051 |
xr->cdefs[i].blue * sf; |
1052 |
} |
1053 |
XStoreColors(thedisplay, xr->cmap, xr->cdefs, xr->ncolors); |
1054 |
} |
1055 |
|
1056 |
|
1057 |
getscan(y) |
1058 |
int y; |
1059 |
{ |
1060 |
static int trunced = -1; /* truncated file? */ |
1061 |
skipit: |
1062 |
if (trunced >= 0 && y >= trunced) { |
1063 |
bzero(scanline, xmax*sizeof(COLR)); |
1064 |
return(-1); |
1065 |
} |
1066 |
if (y != cury) { |
1067 |
if (scanpos == NULL || scanpos[y] == -1) |
1068 |
return(-1); |
1069 |
if (fseek(fin, scanpos[y], 0) == -1) |
1070 |
quiterr("fseek error"); |
1071 |
cury = y; |
1072 |
} else if (scanpos != NULL && scanpos[y] == -1) |
1073 |
scanpos[y] = ftell(fin); |
1074 |
|
1075 |
if (freadcolrs(scanline, xmax, fin) < 0) { |
1076 |
fprintf(stderr, "%s: %s: unfinished picture\n", |
1077 |
progname, fname==NULL?"<stdin>":fname); |
1078 |
trunced = y; |
1079 |
goto skipit; |
1080 |
} |
1081 |
cury++; |
1082 |
return(0); |
1083 |
} |