source: trunk/third/xscreensaver/hacks/noseguy.c @ 20148

/* xscreensaver, Copyright (c) 1992, 1996, 1997, 1998
 *  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.
 */

/* Make a little guy with a big nose and a hat wanter around the screen,
   spewing out messages.  Derived from xnlock by 
   Dan Heller <argv@danheller.com>.
 */

#include "screenhack.h"
#include "xpm-pixmap.h"
#include <stdio.h>

extern FILE *popen (const char *, const char *);
extern int pclose (FILE *);

#define font_height(font)               (font->ascent + font->descent)
#define FONT_NAME                       "-*-times-*-*-*-*-18-*-*-*-*-*-*-*"

static Display *dpy;
static Window window;
static int Width, Height;
static GC fg_gc, bg_gc, text_fg_gc, text_bg_gc;
static char *words;
static char *get_words (void);
static int x, y;
static XFontStruct *font;
static char *def_words = "I'm out running around.";
static void walk (int dir);
static void talk (int erase);
static void talk_1 (void);
static int think (void);
static unsigned long interval;
static unsigned long look (void); 
static Pixmap left1, left2, right1, right2;
static Pixmap left_front, right_front, front, down;

static char *program, *orig_program, *filename, *text;

#define FROM_ARGV    1
#define FROM_PROGRAM 2
#define FROM_FILE    3
#define FROM_RESRC   4
static int getwordsfrom;

#define IS_MOVING  1
#define GET_PASSWD 2
static int state;       /* indicates states: walking or getting passwd */

static void (*next_fn) (void);

#if defined(HAVE_GDK_PIXBUF) || defined(HAVE_XPM)
# include "images/noseguy/nose-f1.xpm"
# include "images/noseguy/nose-f2.xpm"
# include "images/noseguy/nose-f3.xpm"
# include "images/noseguy/nose-f4.xpm"
# include "images/noseguy/nose-l1.xpm"
# include "images/noseguy/nose-l2.xpm"
# include "images/noseguy/nose-r1.xpm"
# include "images/noseguy/nose-r2.xpm"
#else
# include "images/noseguy/nose-f1.xbm"
# include "images/noseguy/nose-f2.xbm"
# include "images/noseguy/nose-f3.xbm"
# include "images/noseguy/nose-f4.xbm"
# include "images/noseguy/nose-l1.xbm"
# include "images/noseguy/nose-l2.xbm"
# include "images/noseguy/nose-r1.xbm"
# include "images/noseguy/nose-r2.xbm"
#endif

static void
init_images (void)
{
  static Pixmap *images[] = {
    &left1, &left2, &right1, &right2,
    &left_front, &right_front, &front, &down
  };
  int i;
#if defined(HAVE_GDK_PIXBUF) || defined(HAVE_XPM)

  static char **bits[] = {
    nose_l1_xpm, nose_l2_xpm, nose_r1_xpm, nose_r2_xpm,
    nose_f2_xpm, nose_f3_xpm, nose_f1_xpm, nose_f4_xpm
  };


  for (i = 0; i < sizeof (images) / sizeof(*images); i++)
    {
      Pixmap pixmap = xpm_data_to_pixmap (dpy, window, bits[i],
                                          0, 0, 0);
      if (!pixmap)
        {
          fprintf (stderr, "%s: Can't load nose images\n", progname);
          exit (1);
        }
      *images[i] = pixmap;
    }
#else
  static unsigned char *bits[] = {
    nose_l1_bits, nose_l2_bits, nose_r1_bits, nose_r2_bits,
    nose_f2_bits, nose_f3_bits, nose_f1_bits, nose_f4_bits
  };

  for (i = 0; i < sizeof (images) / sizeof(*images); i++)
    if (!(*images[i] =
          XCreatePixmapFromBitmapData(dpy, window,
                                      (char *) bits[i], 64, 64, 1, 0, 1)))
      {
        fprintf (stderr, "%s: Can't load nose images\n", progname);
        exit (1);
      }
#endif
}

#define LEFT    001
#define RIGHT   002
#define DOWN    004
#define UP      010
#define FRONT   020
#define X_INCR 3
#define Y_INCR 2

static void
move (void)
{
    static int      length,
                    dir;

    if (!length)
    {
        register int    tries = 0;
        dir = 0;
        if ((random() & 1) && think())
        {
            talk(0);            /* sets timeout to itself */
            return;
        }
        if (!(random() % 3) && (interval = look()))
        {
            next_fn = move;
            return;
        }
        interval = 20 + random() % 100;
        do
        {
            if (!tries)
                length = Width / 100 + random() % 90, tries = 8;
            else
                tries--;
            switch (random() % 8)
            {
            case 0:
                if (x - X_INCR * length >= 5)
                    dir = LEFT;
                break;
            case 1:
                if (x + X_INCR * length <= Width - 70)
                    dir = RIGHT;
                break;
            case 2:
                if (y - (Y_INCR * length) >= 5)
                    dir = UP, interval = 40;
                break;
            case 3:
                if (y + Y_INCR * length <= Height - 70)
                    dir = DOWN, interval = 20;
                break;
            case 4:
                if (x - X_INCR * length >= 5 && y - (Y_INCR * length) >= 5)
                    dir = (LEFT | UP);
                break;
            case 5:
                if (x + X_INCR * length <= Width - 70 &&
                    y - Y_INCR * length >= 5)
                    dir = (RIGHT | UP);
                break;
            case 6:
                if (x - X_INCR * length >= 5 &&
                    y + Y_INCR * length <= Height - 70)
                    dir = (LEFT | DOWN);
                break;
            case 7:
                if (x + X_INCR * length <= Width - 70 &&
                    y + Y_INCR * length <= Height - 70)
                    dir = (RIGHT | DOWN);
                break;
            default:
                /* No Defaults */
                break;
            }
        } while (!dir);
    }
    walk(dir);
    --length;
    next_fn = move;
}

#ifdef HAVE_XPM
# define COPY(dpy,frame,window,gc,x,y,w,h,x2,y2) \
  XCopyArea (dpy,frame,window,gc,x,y,w,h,x2,y2)
#else
# define COPY(dpy,frame,window,gc,x,y,w,h,x2,y2) \
  XCopyPlane(dpy,frame,window,gc,x,y,w,h,x2,y2,1L)
#endif

static void
walk(int dir)
{
    register int    incr = 0;
    static int      lastdir;
    static int      up = 1;
    static Pixmap   frame;

    if (dir & (LEFT | RIGHT))
    {                           /* left/right movement (mabye up/down too) */
        up = -up;               /* bouncing effect (even if hit a wall) */
        if (dir & LEFT)
        {
            incr = X_INCR;
            frame = (up < 0) ? left1 : left2;
        }
        else
        {
            incr = -X_INCR;
            frame = (up < 0) ? right1 : right2;
        }
        if ((lastdir == FRONT || lastdir == DOWN) && dir & UP)
        {

            /*
             * workaround silly bug that leaves screen dust when guy is
             * facing forward or down and moves up-left/right.
             */
            COPY(dpy, frame, window, fg_gc, 0, 0, 64, 64, x, y);
            XFlush(dpy);
        }
        /* note that maybe neither UP nor DOWN is set! */
        if (dir & UP && y > Y_INCR)
            y -= Y_INCR;
        else if (dir & DOWN && y < Height - 64)
            y += Y_INCR;
    }
    /* Explicit up/down movement only (no left/right) */
    else if (dir == UP)
        COPY(dpy, front, window, fg_gc, 0, 0, 64, 64, x, y -= Y_INCR);
    else if (dir == DOWN)
        COPY(dpy, down, window, fg_gc, 0, 0, 64, 64, x, y += Y_INCR);
    else if (dir == FRONT && frame != front)
    {
        if (up > 0)
            up = -up;
        if (lastdir & LEFT)
            frame = left_front;
        else if (lastdir & RIGHT)
            frame = right_front;
        else
            frame = front;
        COPY(dpy, frame, window, fg_gc, 0, 0, 64, 64, x, y);
    }
    if (dir & LEFT)
        while (--incr >= 0)
        {
            COPY(dpy, frame, window, fg_gc, 0, 0, 64, 64, --x, y + up);
            XFlush(dpy);
        }
    else if (dir & RIGHT)
        while (++incr <= 0)
        {
            COPY(dpy, frame, window, fg_gc, 0, 0, 64, 64, ++x, y + up);
            XFlush(dpy);
        }
    lastdir = dir;
}

static int
think (void)
{
    if (random() & 1)
        walk(FRONT);
    if (random() & 1)
    {
        if (getwordsfrom == FROM_PROGRAM)
            words = get_words();
        return 1;
    }
    return 0;
}

#define MAXLINES 25

#undef BUFSIZ
#define BUFSIZ ((MAXLINES + 1) * 100)


static void
talk(int force_erase)
{
    int             width = 0,
                    height,
                    Z,
                    total = 0;
    static int      X,
                    Y,
                    talking;
    static struct
    {
        int             x,
                        y,
                        width,
                        height;
    }               s_rect;
    register char  *p,
                   *p2;
    char            buf[BUFSIZ],
                    args[MAXLINES][256];

    /* clear what we've written */
    if (talking || force_erase)
    {
        if (!talking)
            return;
        XFillRectangle(dpy, window, bg_gc, s_rect.x - 5, s_rect.y - 5,
                       s_rect.width + 10, s_rect.height + 10);
        talking = 0;
        if (!force_erase)
          next_fn = move;
        interval = 0;
        {
          /* might as well check the window for size changes now... */
          XWindowAttributes xgwa;
          XGetWindowAttributes (dpy, window, &xgwa);
          Width = xgwa.width + 2;
          Height = xgwa.height + 2;
        }
        return;
    }
    talking = 1;
    walk(FRONT);
    p = strcpy(buf, words);

    if (!(p2 = strchr(p, '\n')) || !p2[1])
      {
        total = strlen (words);
        strcpy (args[0], words);
        width = XTextWidth(font, words, total);
        height = 0;
      }
    else
      /* p2 now points to the first '\n' */
      for (height = 0; p; height++)
        {
          int             w;
          *p2 = 0;
          if ((w = XTextWidth(font, p, p2 - p)) > width)
            width = w;
          total += p2 - p;      /* total chars; count to determine reading
                                 * time */
          (void) strcpy(args[height], p);
          if (height == MAXLINES - 1)
            {
              /* puts("Message too long!"); */
              break;
            }
          p = p2 + 1;
          if (!(p2 = strchr(p, '\n')))
            break;
        }
    height++;

    /*
     * Figure out the height and width in pixels (height, width) extend the
     * new box by 15 pixels on the sides (30 total) top and bottom.
     */
    s_rect.width = width + 30;
    s_rect.height = height * font_height(font) + 30;
    if (x - s_rect.width - 10 < 5)
        s_rect.x = 5;
    else if ((s_rect.x = x + 32 - (s_rect.width + 15) / 2)
             + s_rect.width + 15 > Width - 5)
        s_rect.x = Width - 15 - s_rect.width;
    if (y - s_rect.height - 10 < 5)
        s_rect.y = y + 64 + 5;
    else
        s_rect.y = y - 5 - s_rect.height;

    XFillRectangle(dpy, window, text_bg_gc,
         s_rect.x, s_rect.y, s_rect.width, s_rect.height);

    /* make a box that's 5 pixels thick. Then add a thin box inside it */
    XSetLineAttributes(dpy, text_fg_gc, 5, 0, 0, 0);
    XDrawRectangle(dpy, window, text_fg_gc,
                   s_rect.x, s_rect.y, s_rect.width - 1, s_rect.height - 1);
    XSetLineAttributes(dpy, text_fg_gc, 0, 0, 0, 0);
    XDrawRectangle(dpy, window, text_fg_gc,
         s_rect.x + 7, s_rect.y + 7, s_rect.width - 15, s_rect.height - 15);

    X = 15;
    Y = 15 + font_height(font);

    /* now print each string in reverse order (start at bottom of box) */
    for (Z = 0; Z < height; Z++)
    {
        XDrawString(dpy, window, text_fg_gc, s_rect.x + X, s_rect.y + Y,
                    args[Z], strlen(args[Z]));
        Y += font_height(font);
    }
    interval = (total / 15) * 1000;
    if (interval < 2000) interval = 2000;
    next_fn = talk_1;
}

static void talk_1 (void) 
{
  talk(0);
}


static unsigned long
look (void)
{
    if (random() % 3)
    {
        COPY(dpy, (random() & 1) ? down : front, window, fg_gc,
             0, 0, 64, 64, x, y);
        return 1000L;
    }
    if (!(random() % 5))
        return 0;
    if (random() % 3)
    {
        COPY(dpy, (random() & 1) ? left_front : right_front,
             window, fg_gc, 0, 0, 64, 64, x, y);
        return 1000L;
    }
    if (!(random() % 5))
        return 0;
    COPY(dpy, (random() & 1) ? left1 : right1, window, fg_gc,
         0, 0, 64, 64, x, y);
    return 1000L;
}


static void
init_words (void)
{
  char *mode = get_string_resource ("mode", "Mode");

  program = get_string_resource ("program", "Program");
  filename = get_string_resource ("filename", "Filename");
  text = get_string_resource ("text", "Text");

  if (program)  /* get stderr on stdout, so it shows up on the window */
    {
      orig_program = program;
      program = (char *) malloc (strlen (program) + 10);
      strcpy (program, "( ");
      strcat (program, orig_program);
      strcat (program, " ) 2>&1");
    }

  if (!mode || !strcmp (mode, "program"))
    getwordsfrom = FROM_PROGRAM;
  else if (!strcmp (mode, "file"))
    getwordsfrom = FROM_FILE;
  else if (!strcmp (mode, "string"))
    getwordsfrom = FROM_RESRC;
  else
    {
      fprintf (stderr,
               "%s: mode must be program, file, or string, not %s\n",
               progname, mode);
      exit (1);
    }

  if (getwordsfrom == FROM_PROGRAM && !program)
    {
      fprintf (stderr, "%s: no program specified.\n", progname);
      exit (1);
    }
  if (getwordsfrom == FROM_FILE && !filename)
    {
      fprintf (stderr, "%s: no file specified.\n", progname);
      exit (1);
    }

  words = get_words();  
}

static int first_time = 1;

static char *
get_words (void)
{
    FILE           *pp;
    static char     buf[BUFSIZ];
    register char  *p = buf;

    buf[0] = '\0';

    switch (getwordsfrom)
    {
    case FROM_PROGRAM:
#ifndef VMS
        if ((pp = popen(program, "r")))
        {
            while (fgets(p, sizeof(buf) - strlen(buf), pp))
            {
                if (strlen(buf) + 1 < sizeof(buf))
                    p = buf + strlen(buf);
                else
                    break;
            }
            (void) pclose(pp);
            if (! buf[0])
              sprintf (buf, "\"%s\" produced no output!", orig_program);
            else if (!first_time &&
                     (strstr (buf, ": not found") ||
                      strstr (buf, ": Not found") ||
                      strstr (buf, ": command not found") ||
                      strstr (buf, ": Command not found")))
              switch (random () % 20)
                {
                case 1: strcat (buf, "( Get with the program, bub. )\n");
                  break;
                case 2: strcat (buf,
                  "( I blow my nose at you, you silly person! ) \n"); break;
                case 3: strcat (buf,
                  "\nThe resource you want to\nset is `noseguy.program'\n");
                  break;
                case 4:
                  strcat(buf,"\nHelp!!  Help!!\nAAAAAAGGGGHHH!!  \n\n"); break;
                case 5: strcpy (buf, "You have new mail.\n"); break;
                case 6:
                  strcat(buf,"( Hello?  Are you paying attention? )\n");break;
                case 7:
                  strcat (buf, "sh: what kind of fool do you take me for? \n");
                  break;
                }
            first_time = 0;
            p = buf;
        }
        else
        {
            perror(program);
            p = def_words;
        }
        break;
#endif /* VMS */
    case FROM_FILE:
        if ((pp = fopen(filename, "r")))
        {
            while (fgets(p, sizeof(buf) - strlen(buf), pp))
            {
                if (strlen(buf) + 1 < sizeof(buf))
                    p = buf + strlen(buf);
                else
                    break;
            }
            (void) fclose(pp);
            if (! buf[0])
              sprintf (buf, "file \"%s\" is empty!", filename);
            p = buf;
        }
        else
        {
          sprintf (buf, "couldn't read file \"%s\"!", filename);
          p = buf;
        }
        break;
    case FROM_RESRC:
        p = text;
        break;
    default:
        p = def_words;
        break;
    }

    if (!p || *p == '\0')
        p = def_words;
    return p;
}



char *progclass = "Noseguy";

char *defaults [] = {
  ".background:         black",
  ".foreground:         gray80",
#ifndef VMS
  "*mode:               program",
#else
  "*mode:               string",
#endif
  "*program:            " FORTUNE_PROGRAM,
  "noseguy.font:        -*-new century schoolbook-*-r-*-*-*-180-*-*-*-*-*-*",
  0
};

XrmOptionDescRec options [] = {
  { "-mode",            ".mode",                XrmoptionSepArg, 0 },
  { "-program",         ".program",             XrmoptionSepArg, 0 },
  { "-text",            ".text",                XrmoptionSepArg, 0 },
  { "-filename",        ".filename",            XrmoptionSepArg, 0 },
  { "-font",            ".font",                XrmoptionSepArg, 0 },
  { "-text-foreground", ".textForeground",      XrmoptionSepArg, 0 },
  { "-text-background", ".textBackground",      XrmoptionSepArg, 0 },
  { 0, 0, 0, 0 }
};


static void
noseguy_init (Display *d, Window w)
{
  unsigned long fg, bg, text_fg, text_bg;
  XWindowAttributes xgwa;
  Colormap cmap;
  char *fontname = get_string_resource ("font", "Font");
  char **list;
  int foo, i;
  XGCValues gcvalues;
  dpy = d;
  window = w;
  XGetWindowAttributes (dpy, window, &xgwa);
  Width = xgwa.width + 2;
  Height = xgwa.height + 2;
  cmap = xgwa.colormap;

  init_words();
  init_images();

  if (!fontname || !(font = XLoadQueryFont(dpy, fontname)))
    {
        list = XListFonts(dpy, FONT_NAME, 32767, &foo);
        for (i = 0; i < foo; i++)
            if ((font = XLoadQueryFont(dpy, list[i])))
                break;
        if (!font)
          {
            fprintf (stderr, "%s: Can't find a large font.", progname);
            exit (1);
          }
        XFreeFontNames(list);
    }

  fg = get_pixel_resource ("foreground", "Foreground", dpy, cmap);
  bg = get_pixel_resource ("background", "Background", dpy, cmap);
  text_fg = get_pixel_resource ("textForeground", "Foreground", dpy, cmap);
  text_bg = get_pixel_resource ("textBackground", "Background", dpy, cmap);
  /* notice when unspecified */
  if (! get_string_resource ("textForeground", "Foreground"))
    text_fg = bg;
  if (! get_string_resource ("textBackground", "Background"))
    text_bg = fg;

  gcvalues.font = font->fid;
  gcvalues.graphics_exposures = False;
  gcvalues.foreground = fg;
  gcvalues.background = bg;
  fg_gc = XCreateGC (dpy, window,
                     GCForeground|GCBackground|GCGraphicsExposures|GCFont,
                     &gcvalues);
  gcvalues.foreground = bg;
  gcvalues.background = fg;
  bg_gc = XCreateGC (dpy, window,
                     GCForeground|GCBackground|GCGraphicsExposures|GCFont,
                     &gcvalues);
  gcvalues.foreground = text_fg;
  gcvalues.background = text_bg;
  text_fg_gc = XCreateGC (dpy, window,
                          GCForeground|GCBackground|GCGraphicsExposures|GCFont,
                          &gcvalues);
  gcvalues.foreground = text_bg;
  gcvalues.background = text_fg;
  text_bg_gc = XCreateGC (dpy, window,
                          GCForeground|GCBackground|GCGraphicsExposures|GCFont,
                          &gcvalues);
  x = Width / 2;
  y = Height / 2;
  state = IS_MOVING;
}
     
void
screenhack (Display *d, Window w)
{
  noseguy_init (d, w);
  next_fn = move;
  while (1)
    {
      next_fn();
      XSync (dpy, False);
      screenhack_handle_events (dpy);
      usleep (interval * 1000);
    }
}