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-rw-r--r--hacks/xjack.c487
1 files changed, 487 insertions, 0 deletions
diff --git a/hacks/xjack.c b/hacks/xjack.c
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--- /dev/null
+++ b/hacks/xjack.c
@@ -0,0 +1,487 @@
+/* xscreensaver, Copyright (c) 1997-2013 Jamie Zawinski <jwz@jwz.org>
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * Wendy, let me explain something to you. Whenever you come in here and
+ * interrupt me, you're BREAKING my CONCENTRATION. You're DISTRACTING me!
+ * And it will then take me time to get back to where I was. You understand?
+ * Now, we're going to make a new rule. When you come in here and you hear
+ * me typing, or whether you DON'T hear me typing, or whatever the FUCK you
+ * hear me doing; when I'm in here, it means that I am working, THAT means
+ * don't come in! Now, do you think you can handle that?
+ */
+
+#include <ctype.h>
+#include "screenhack.h"
+
+static const char *source = "All work and no play makes Jack a dull boy. ";
+/* If you're here because you're thinking about making the above string be
+ customizable, then you don't get the joke. You loser. */
+
+struct state {
+ Display *dpy;
+ Window window;
+ XWindowAttributes xgwa;
+ XFontStruct *font;
+ GC gc;
+
+ const char *s;
+ int columns, rows; /* characters */
+ int left, right; /* characters */
+ int char_width, line_height; /* pixels */
+ int x, y; /* characters */
+ int mode;
+ int hspace; /* pixels */
+ int vspace; /* pixels */
+ Bool break_para;
+ Bool caps;
+ int sentences;
+ int paras;
+ int scrolling;
+ int subscrolling;
+ int pining;
+
+ int delay;
+};
+
+
+static void
+xjack_reshape (Display *dpy, Window window, void *closure,
+ unsigned int w, unsigned int h)
+{
+ struct state *st = (struct state *) closure;
+ XGetWindowAttributes (st->dpy, st->window, &st->xgwa);
+ st->columns = (st->xgwa.width - st->hspace - st->hspace) / st->char_width;
+ st->rows = (st->xgwa.height - st->vspace - st->vspace) / st->line_height;
+ st->rows--;
+ st->columns--;
+
+ /* If the window is stupidly small, just truncate. */
+ if (st->rows < 4) st->rows = 4;
+ if (st->columns < 12) st->columns = 12;
+
+ if (st->y > st->rows) st->y = st->rows-1;
+ if (st->x > st->columns) st->x = st->columns-2;
+
+ if (st->right > st->columns) st->right = st->columns;
+ if (st->left > st->columns-20) st->left = st->columns-20;
+ if (st->left < 0) st->left = 0;
+
+ XClearWindow (st->dpy, st->window);
+}
+
+
+static void *
+xjack_init (Display *dpy, Window window)
+{
+ struct state *st = (struct state *) calloc (1, sizeof(*st));
+ XGCValues gcv;
+ char *fontname;
+
+ st->dpy = dpy;
+ st->window = window;
+ st->s = source;
+ st->delay = get_integer_resource (st->dpy, "delay", "Integer");
+ fontname = get_string_resource (st->dpy, "font", "Font");
+
+ XGetWindowAttributes (st->dpy, st->window, &st->xgwa);
+
+ if (st->xgwa.width <= 480)
+ fontname = "-*-courier-medium-r-*-*-*-180-*-*-m-*-*-*";
+
+ st->font = load_font_retry (st->dpy, fontname);
+ if (!st->font) abort();
+
+ gcv.font = st->font->fid;
+ gcv.foreground = get_pixel_resource (st->dpy, st->xgwa.colormap,
+ "foreground", "Foreground");
+ gcv.background = get_pixel_resource (st->dpy, st->xgwa.colormap,
+ "background", "Background");
+ st->gc = XCreateGC (st->dpy, st->window,
+ (GCFont | GCForeground | GCBackground), &gcv);
+
+ st->char_width =
+ (st->font->per_char
+ ? st->font->per_char['n'-st->font->min_char_or_byte2].rbearing
+ : st->font->min_bounds.rbearing);
+ st->line_height = st->font->ascent + st->font->descent + 1;
+
+ xjack_reshape (dpy, window, st, st->xgwa.width, st->xgwa.height);
+
+ st->left = 0xFF & (random() % ((st->columns / 2)+1));
+ st->right = st->left + (0xFF & (random() % (st->columns - st->left)
+ + 10));
+ if (st->right < st->left + 10) st->right = st->left + 10;
+ if (st->right > st->columns) st->right = st->columns;
+
+ st->x = st->left;
+ st->y = 0;
+
+ if (st->xgwa.width > 200 && st->xgwa.height > 200)
+ st->hspace = st->vspace = 40;
+
+ return st;
+}
+
+static unsigned long
+xjack_scroll (struct state *st)
+{
+ st->break_para = 0;
+ if (st->subscrolling)
+ {
+ int inc = st->line_height / 7;
+ XCopyArea (st->dpy, st->window, st->window, st->gc,
+ 0, inc,
+ st->xgwa.width, st->xgwa.height - inc,
+ 0, 0);
+
+ /* See? It's OK. He saw it on the television. */
+ XClearArea (st->dpy, st->window,
+ 0, st->xgwa.height - inc, st->xgwa.width, inc,
+ False);
+
+ st->subscrolling -= inc;
+ if (st->subscrolling <= 0)
+ st->subscrolling = 0;
+ if (st->subscrolling == 0)
+ {
+ if (st->scrolling > 0)
+ st->scrolling--;
+ st->y--;
+ }
+ return st->delay / 1000;
+ }
+ else if (st->scrolling)
+ st->subscrolling = st->line_height;
+
+ if (st->y < 0)
+ st->y = 0;
+ else if (st->y >= st->rows-1)
+ st->y = st->rows-1;
+
+ return st->delay;
+}
+
+static unsigned long
+xjack_pine (struct state *st)
+{
+ /* See also http://catalog.com/hopkins/unix-haters/login.html */
+ const char *n1 = "NFS server overlook not responding, still trying...";
+ const char *n2 = "NFS server overlook ok.";
+ int prev = st->pining;
+
+ if (!st->pining)
+ st->pining = 1 + (random() % 3);
+
+ if (prev)
+ while (*n2)
+ {
+ XDrawString (st->dpy, st->window, st->gc,
+ (st->x * st->char_width) + st->hspace,
+ ((st->y * st->line_height) + st->vspace
+ + st->font->ascent),
+ (char *) n2, 1);
+ st->x++;
+ if (st->x >= st->columns) st->x = 0, st->y++;
+ n2++;
+ }
+ st->y++;
+ st->x = 0;
+ st->pining--;
+
+ if (st->pining)
+ while (*n1)
+ {
+ XDrawString (st->dpy, st->window, st->gc,
+ (st->x * st->char_width) + st->hspace,
+ ((st->y * st->line_height) + st->vspace
+ + st->font->ascent),
+ (char *) n1, 1);
+ st->x++;
+ if (st->x >= st->columns) st->x = 0, st->y++;
+ n1++;
+ }
+
+ return 5000000;
+}
+
+
+static unsigned long
+xjack_draw (Display *dpy, Window window, void *closure)
+{
+ struct state *st = (struct state *) closure;
+ int this_delay = st->delay;
+ int word_length = 0;
+ const char *s2;
+
+ if (st->scrolling)
+ return xjack_scroll (st);
+ if (st->pining)
+ return xjack_pine (st);
+
+ for (s2 = st->s; *s2 && *s2 != ' '; s2++)
+ word_length++;
+
+ if (st->break_para ||
+ (*st->s != ' ' &&
+ (st->x + word_length) >= st->right))
+ {
+ st->x = st->left;
+ st->y++;
+
+ if (st->break_para)
+ st->y++;
+
+ st->break_para = 0;
+
+ if (st->mode == 1 || st->mode == 2)
+ {
+ /* 1 = left margin goes southwest; 2 = southeast */
+ st->left += (st->mode == 1 ? 1 : -1);
+ if (st->left >= st->right - 10)
+ {
+ if ((st->right < (st->columns - 10)) && (random() & 1))
+ st->right += (0xFF & (random() % (st->columns - st->right)));
+ else
+ st->mode = 2;
+ }
+ else if (st->left <= 0)
+ {
+ st->left = 0;
+ st->mode = 1;
+ }
+ }
+ else if (st->mode == 3 || st->mode == 4)
+ {
+ /* 3 = right margin goes southeast; 4 = southwest */
+ st->right += (st->mode == 3 ? 1 : -1);
+ if (st->right >= st->columns)
+ {
+ st->right = st->columns;
+ st->mode = 4;
+ }
+ else if (st->right <= st->left + 10)
+ st->mode = 3;
+ }
+
+ if (st->y >= st->rows-1) /* bottom of page */
+ {
+# if 0 /* Nah, this looks bad. */
+
+ /* scroll by 1-5 lines */
+ st->scrolling = (random() % 5 ? 0 : (0xFF & (random() % 5))) + 1;
+
+ if (st->break_para)
+ st->scrolling++;
+
+ /* but sometimes scroll by a whole page */
+ if (0 == (random() % 100))
+ st->scrolling += st->rows;
+# else
+ st->scrolling = 1;
+# endif
+
+ return xjack_scroll (st);
+ }
+ }
+
+ if (*st->s != ' ')
+ {
+ char c = *st->s;
+ int xshift = 0, yshift = 0;
+ if (0 == random() % 50)
+ {
+ xshift = random() % ((st->char_width / 3) + 1); /* mis-strike */
+ yshift = random() % ((st->line_height / 6) + 1);
+ if (0 == (random() % 3))
+ yshift *= 2;
+ if (random() & 1)
+ xshift = -xshift;
+ if (random() & 1)
+ yshift = -yshift;
+ }
+
+ if (0 == (random() % 250)) /* introduce adjascent-key typo */
+ {
+ static const char * const typo[] = {
+ "asqw", "ASQW", "bgvhn", "cxdfv", "dserfcx", "ewsdrf",
+ "Jhuikmn", "kjiol,m", "lkop;.,", "mnjk,", "nbhjm", "oiklp09",
+ "pol;(-0", "redft54", "sawedxz", "uyhji87", "wqase32",
+ "yuhgt67", ".,l;/", 0 };
+ int i = 0;
+ while (typo[i] && typo[i][0] != c)
+ i++;
+ if (typo[i])
+ c = typo[i][0xFF & ((random() % strlen(typo[i]+1)) + 1)];
+ }
+
+ /* caps typo */
+ if (c >= 'a' && c <= 'z' && (st->caps || 0 == (random() % 350)))
+ {
+ c -= ('a'-'A');
+ if (c == 'O' && random() & 1)
+ c = '0';
+ }
+
+ OVERSTRIKE:
+ XDrawString (st->dpy, st->window, st->gc,
+ (st->x * st->char_width) + st->hspace + xshift,
+ ((st->y * st->line_height) + st->vspace + st->font->ascent
+ + yshift),
+ &c, 1);
+ if (xshift == 0 && yshift == 0 && (0 == (random() & 3000)))
+ {
+ if (random() & 1)
+ xshift--;
+ else
+ yshift--;
+ goto OVERSTRIKE;
+ }
+
+ if ((tolower(c) != tolower(*st->s))
+ ? (0 == (random() % 10)) /* backup to correct */
+ : (0 == (random() % 400))) /* fail to advance */
+ {
+ st->x--;
+ st->s--;
+ if (st->delay)
+ st->delay += (0xFFFF & (st->delay +
+ (random() % (st->delay * 10))));
+ }
+ }
+
+ st->x++;
+ st->s++;
+
+ if (0 == random() % 200)
+ {
+ if (random() & 1 && st->s != source)
+ st->s--; /* duplicate character */
+ else if (*st->s)
+ st->s++; /* skip character */
+ }
+
+ if (*st->s == 0)
+ {
+ st->sentences++;
+ st->caps = (0 == random() % 40); /* capitalize sentence */
+
+ if (0 == (random() % 10) || /* randomly break paragraph */
+ (st->mode == 0 &&
+ ((0 == (random() % 10)) || st->sentences > 20)))
+ {
+ st->break_para = True;
+ st->sentences = 0;
+ st->paras++;
+
+ if (random() & 1) /* mode=0 50% of the time */
+ st->mode = 0;
+ else
+ st->mode = (0xFF & (random() % 5));
+
+ if (0 == (random() % 2)) /* re-pick margins */
+ {
+ st->left = 0xFF & (random() % (st->columns / 3));
+ st->right = (st->columns -
+ (0xFF & (random() % (st->columns / 3))));
+
+ if (0 == random() % 3) /* sometimes be wide */
+ st->right = st->left + ((st->right - st->left) / 2);
+ }
+
+ if (st->right - st->left <= 10) /* introduce sanity */
+ {
+ st->left = 0;
+ st->right = st->columns;
+ }
+
+ if (st->right - st->left > 50) /* if wide, shrink and move */
+ {
+ st->left += (0xFF & (random() % ((st->columns - 50) + 1)));
+ st->right = st->left + (0xFF & ((random() % 40) + 10));
+ }
+
+ /* oh, gag. */
+ if (st->mode == 0 &&
+ st->right - st->left < 25 &&
+ st->columns > 40)
+ {
+ st->right += 20;
+ if (st->right > st->columns)
+ st->left -= (st->right - st->columns);
+ }
+
+ if (st->right - st->left < 5)
+ st->left = st->right - 5;
+ if (st->left < 0)
+ st->left = 0;
+ if (st->right - st->left < 5)
+ st->right = st->left + 5;
+ }
+ st->s = source;
+ }
+
+ if (st->delay)
+ {
+ if (0 == random() % 3)
+ this_delay += (0xFFFFFF & ((random() % (st->delay * 5)) + 1));
+
+ if (st->break_para)
+ this_delay += (0xFFFFFF & ((random() % (st->delay * 15)) + 1));
+ }
+
+ if (st->paras > 5 &&
+ (0 == (random() % 1000)) &&
+ st->y < st->rows-2)
+ return xjack_pine (st);
+
+ return this_delay;
+}
+
+static Bool
+xjack_event (Display *dpy, Window window, void *closure, XEvent *event)
+{
+ struct state *st = (struct state *) closure;
+ if (event->xany.type == ButtonPress)
+ {
+ st->scrolling++;
+ return True;
+ }
+
+ return False;
+}
+
+static void
+xjack_free (Display *dpy, Window window, void *closure)
+{
+ struct state *st = (struct state *) closure;
+ free (st);
+}
+
+
+static const char *xjack_defaults [] = {
+ ".background: #FFF0B4",
+ ".foreground: #000000",
+ "*fpsSolid: true",
+#ifdef HAVE_COCOA
+ ".font: American Typewriter 24",
+#else
+ ".font: -*-courier-medium-r-*-*-*-240-*-*-m-*-*-*",
+#endif
+ "*delay: 50000",
+ 0
+};
+
+static XrmOptionDescRec xjack_options [] = {
+ { "-delay", ".delay", XrmoptionSepArg, 0 },
+ { "-font", ".font", XrmoptionSepArg, 0 },
+ { 0, 0, 0, 0 }
+};
+
+XSCREENSAVER_MODULE ("XJack", xjack)
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-05-18 03:46:33 +0200