1 /* xscreensaver, Copyright (c) 1997-2008 Jamie Zawinski <jwz@jwz.org>
3 * Permission to use, copy, modify, distribute, and sell this software and its
4 * documentation for any purpose is hereby granted without fee, provided that
5 * the above copyright notice appear in all copies and that both that
6 * copyright notice and this permission notice appear in supporting
7 * documentation. No representations are made about the suitability of this
8 * software for any purpose. It is provided "as is" without express or
11 * Wendy, let me explain something to you. Whenever you come in here and
12 * interrupt me, you're BREAKING my CONCENTRATION. You're DISTRACTING me!
13 * And it will then take me time to get back to where I was. You understand?
14 * Now, we're going to make a new rule. When you come in here and you hear
15 * me typing, or whether you DON'T hear me typing, or whatever the FUCK you
16 * hear me doing; when I'm in here, it means that I am working, THAT means
17 * don't come in! Now, do you think you can handle that?
21 #include "screenhack.h"
23 static const char *source = "All work and no play makes Jack a dull boy. ";
24 /* If you're here because you're thinking about making the above string be
25 customizable, then you don't get the joke. You loser. */
30 XWindowAttributes xgwa;
35 int columns, rows; /* characters */
36 int left, right; /* characters */
37 int char_width, line_height; /* pixels */
38 int x, y; /* characters */
40 int hspace; /* pixels */
41 int vspace; /* pixels */
55 xjack_reshape (Display *dpy, Window window, void *closure,
56 unsigned int w, unsigned int h)
58 struct state *st = (struct state *) closure;
59 XGetWindowAttributes (st->dpy, st->window, &st->xgwa);
60 st->columns = (st->xgwa.width - st->hspace - st->hspace) / st->char_width;
61 st->rows = (st->xgwa.height - st->vspace - st->vspace) / st->line_height;
65 if (st->y > st->rows) st->y = st->rows-1;
66 if (st->x > st->columns) st->x = st->columns-2;
68 if (st->right > st->columns) st->right = st->columns;
69 if (st->left > st->columns-20) st->left = st->columns-20;
70 if (st->left < 0) st->left = 0;
75 xjack_init (Display *dpy, Window window)
77 struct state *st = (struct state *) calloc (1, sizeof(*st));
84 st->delay = get_integer_resource (st->dpy, "delay", "Integer");
85 fontname = get_string_resource (st->dpy, "font", "Font");
86 st->font = XLoadQueryFont (st->dpy, fontname);
89 st->font = XLoadQueryFont (st->dpy, "-*-*-medium-r-*-*-*-240-*-*-m-*-*-*");
91 st->font = XLoadQueryFont (st->dpy,
92 "-*-courier-medium-r-*-*-*-180-*-*-m-*-*-*");
94 st->font = XLoadQueryFont (st->dpy, "-*-*-*-r-*-*-*-240-*-*-m-*-*-*");
97 fprintf(stderr, "no big fixed-width font like \"%s\"\n", fontname);
101 XGetWindowAttributes (st->dpy, st->window, &st->xgwa);
103 gcv.font = st->font->fid;
104 gcv.foreground = get_pixel_resource (st->dpy, st->xgwa.colormap,
105 "foreground", "Foreground");
106 gcv.background = get_pixel_resource (st->dpy, st->xgwa.colormap,
107 "background", "Background");
108 st->gc = XCreateGC (st->dpy, st->window,
109 (GCFont | GCForeground | GCBackground), &gcv);
113 ? st->font->per_char['n'-st->font->min_char_or_byte2].rbearing
114 : st->font->min_bounds.rbearing);
115 st->line_height = st->font->ascent + st->font->descent + 1;
117 xjack_reshape (dpy, window, st, st->xgwa.width, st->xgwa.height);
119 st->left = 0xFF & (random() % ((st->columns / 2)+1));
120 st->right = st->left + (0xFF & (random() % (st->columns - st->left - 10)
125 if (st->xgwa.width > 200 && st->xgwa.height > 200)
126 st->hspace = st->vspace = 40;
132 xjack_scroll (struct state *st)
135 if (st->subscrolling)
137 int inc = st->line_height / 7;
138 XCopyArea (st->dpy, st->window, st->window, st->gc,
140 st->xgwa.width, st->xgwa.height - inc,
143 /* See? It's OK. He saw it on the television. */
144 XClearArea (st->dpy, st->window,
145 0, st->xgwa.height - inc, st->xgwa.width, inc,
148 st->subscrolling -= inc;
149 if (st->subscrolling <= 0)
150 st->subscrolling = 0;
151 if (st->subscrolling == 0)
153 if (st->scrolling > 0)
157 return st->delay / 1000;
159 else if (st->scrolling)
160 st->subscrolling = st->line_height;
164 else if (st->y >= st->rows-1)
171 xjack_pine (struct state *st)
173 /* See also http://catalog.com/hopkins/unix-haters/login.html */
174 const char *n1 = "NFS server overlook not responding, still trying...";
175 const char *n2 = "NFS server overlook ok.";
176 int prev = st->pining;
179 st->pining = 1 + (random() % 3);
184 XDrawString (st->dpy, st->window, st->gc,
185 (st->x * st->char_width) + st->hspace,
186 ((st->y * st->line_height) + st->vspace
190 if (st->x >= st->columns) st->x = 0, st->y++;
200 XDrawString (st->dpy, st->window, st->gc,
201 (st->x * st->char_width) + st->hspace,
202 ((st->y * st->line_height) + st->vspace
206 if (st->x >= st->columns) st->x = 0, st->y++;
215 xjack_draw (Display *dpy, Window window, void *closure)
217 struct state *st = (struct state *) closure;
218 int this_delay = st->delay;
223 return xjack_scroll (st);
225 return xjack_pine (st);
227 for (s2 = st->s; *s2 && *s2 != ' '; s2++)
230 if (st->break_para ||
232 (st->x + word_length) >= st->right))
240 if (st->mode == 1 || st->mode == 2)
242 /* 1 = left margin goes southwest; 2 = southeast */
243 st->left += (st->mode == 1 ? 1 : -1);
244 if (st->left >= st->right - 10)
246 if ((st->right < (st->columns - 10)) && (random() & 1))
247 st->right += (0xFF & (random() % (st->columns - st->right)));
251 else if (st->left <= 0)
257 else if (st->mode == 3 || st->mode == 4)
259 /* 3 = right margin goes southeast; 4 = southwest */
260 st->right += (st->mode == 3 ? 1 : -1);
261 if (st->right >= st->columns)
263 st->right = st->columns;
266 else if (st->right <= st->left + 10)
270 if (st->y >= st->rows-1) /* bottom of page */
272 /* scroll by 1-5 lines */
273 st->scrolling = (random() % 5 ? 0 : (0xFF & (random() % 5))) + 1;
277 /* but sometimes scroll by a whole page */
278 if (0 == (random() % 100))
279 st->scrolling += st->rows;
281 return xjack_scroll (st);
288 int xshift = 0, yshift = 0;
289 if (0 == random() % 50)
291 xshift = random() % ((st->char_width / 3) + 1); /* mis-strike */
292 yshift = random() % ((st->line_height / 6) + 1);
293 if (0 == (random() % 3))
301 if (0 == (random() % 250)) /* introduce adjascent-key typo */
303 static const char * const typo[] = {
304 "asqw", "ASQW", "bgvhn", "cxdfv", "dserfcx", "ewsdrf",
305 "Jhuikmn", "kjiol,m", "lkop;.,", "mnjk,", "nbhjm", "oiklp09",
306 "pol;(-0", "redft54", "sawedxz", "uyhji87", "wqase32",
307 "yuhgt67", ".,l;/", 0 };
309 while (typo[i] && typo[i][0] != c)
312 c = typo[i][0xFF & ((random() % strlen(typo[i]+1)) + 1)];
316 if (c >= 'a' && c <= 'z' && (st->caps || 0 == (random() % 350)))
319 if (c == 'O' && random() & 1)
324 XDrawString (st->dpy, st->window, st->gc,
325 (st->x * st->char_width) + st->hspace + xshift,
326 ((st->y * st->line_height) + st->vspace + st->font->ascent
329 if (xshift == 0 && yshift == 0 && (0 == (random() & 3000)))
338 if ((tolower(c) != tolower(*st->s))
339 ? (0 == (random() % 10)) /* backup to correct */
340 : (0 == (random() % 400))) /* fail to advance */
345 st->delay += (0xFFFF & (st->delay +
346 (random() % (st->delay * 10))));
353 if (0 == random() % 200)
355 if (random() & 1 && st->s != source)
356 st->s--; /* duplicate character */
358 st->s++; /* skip character */
364 st->caps = (0 == random() % 40); /* capitalize sentence */
366 if (0 == (random() % 10) || /* randomly break paragraph */
368 ((0 == (random() % 10)) || st->sentences > 20)))
370 st->break_para = True;
374 if (random() & 1) /* mode=0 50% of the time */
377 st->mode = (0xFF & (random() % 5));
379 if (0 == (random() % 2)) /* re-pick margins */
381 st->left = 0xFF & (random() % (st->columns / 3));
382 st->right = (st->columns -
383 (0xFF & (random() % (st->columns / 3))));
385 if (0 == random() % 3) /* sometimes be wide */
386 st->right = st->left + ((st->right - st->left) / 2);
389 if (st->right - st->left <= 10) /* introduce sanity */
392 st->right = st->columns;
395 if (st->right - st->left > 50) /* if wide, shrink and move */
397 st->left += (0xFF & (random() % ((st->columns - 50) + 1)));
398 st->right = st->left + (0xFF & ((random() % 40) + 10));
403 st->right - st->left < 25 &&
407 if (st->right > st->columns)
408 st->left -= (st->right - st->columns);
416 if (0 == random() % 3)
417 this_delay += (0xFFFFFF & ((random() % (st->delay * 5)) + 1));
420 this_delay += (0xFFFFFF & ((random() % (st->delay * 15)) + 1));
424 (0 == (random() % 1000)) &&
426 return xjack_pine (st);
432 xjack_event (Display *dpy, Window window, void *closure, XEvent *event)
434 struct state *st = (struct state *) closure;
435 if (event->xany.type == ButtonPress)
445 xjack_free (Display *dpy, Window window, void *closure)
447 struct state *st = (struct state *) closure;
452 static const char *xjack_defaults [] = {
453 ".background: #FFF0B4",
454 ".foreground: #000000",
457 ".font: American Typewriter 24",
459 ".font: -*-courier-medium-r-*-*-*-240-*-*-m-*-*-*",
465 static XrmOptionDescRec xjack_options [] = {
466 { "-delay", ".delay", XrmoptionSepArg, 0 },
467 { "-font", ".font", XrmoptionSepArg, 0 },
471 XSCREENSAVER_MODULE ("XJack", xjack)