code.delx.au - gnu-emacs/blob - lib-src/emacstool.c

   1 /*
   2    Copyright (C) 1986, 1988, 1990, 1991 Free Software Foundation, Inc.
   3    This program is free software; you can redistribute it and/or modify
   4    it under the terms of the GNU General Public License as published by
   5    the Free Software Foundation; either version 2, or (at your option)
   6    any later version.
   7
   8    This program is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11    GNU General Public License for more details.
  12
  13    You should have received a copy of the GNU General Public License
  14    along with this program; if not, write to the Free Software
  15    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  16
  17 /*
  18  * For Emacs in SunView/Sun-Windows: (supported by Sun Unix v3.2 or greater)
  19  * Insert a notifier filter-function to convert all useful input
  20  * to "key" sequences that emacs can understand.  See: Emacstool(1).
  21  *
  22  * Author: Jeff Peck, Sun Microsystems, Inc. <peck@eng.sun.com>
  23  *
  24  * Original Idea: Ian Batten
  25  * Updated 15-Mar-88, Jeff Peck: set IN_EMACSTOOL, TERM, TERMCAP
  26  * Updated 10-Sep-88, Jeff Peck: add XVIEW and JLE support
  27  * Updated  8-Oct-90, Jeff Peck: add Meta-bit for Xview
  28  * Updated  6-Mar-91, Jeff Peck: Hack to detect -Wt invocation
  29  *      [note, TTYSW limitation means you must Click-To-Type in Openwin]
  30  *      [fixed in OW3 or use local/tty.o]
  31  *      for better results, this should move to using TERMSW.
  32  * Updated 10-Mar-91, Jeff Peck, et al: support for TERMSW (TTERM)
  33  *      allows point-to-type even in OW2
  34  *
  35  *      [note: xvetool should be started with the "-nw" flag for emacs!]
  36  */
  37
  38 #ifdef XVIEW
  39 #include <xview/xview.h>
  40 #include <xview/panel.h>
  41 #include <xview/attr.h>
  42 #include <xview/tty.h>
  43 #include <xview/ttysw.h>                /* private defines */
  44 #include <xview/termsw.h>               /* -DTTERM */
  45 #include <xview/font.h>                 /* for testing */
  46 #else
  47 #include <suntool/sunview.h>
  48 #include <suntool/tty.h>
  49 #include <suntool/ttysw.h>
  50 #endif XVIEW
  51
  52 #ifdef JLE
  53 # include <locale.h>
  54 #endif JLE
  55
  56 #include <stdio.h>
  57 #include <sys/file.h>
  58
  59 #define BUFFER_SIZE 128               /* Size of all the buffers */
  60
  61 /* define WANT_CAPS_LOCK to make f-key T1 (aka F1) behave as CapsLock */
  62 #define WANT_CAPS_LOCK
  63 #ifdef WANT_CAPS_LOCK
  64 int caps_lock;          /* toggle indicator for f-key T1 caps lock */
  65 static char *Caps = "[CAPS] ";          /* Caps Lock prefix string */
  66 #define CAPS_LEN 7                      /* strlen (Caps) */
  67 #endif
  68
  69 static char *mouse_prefix = "\030\000"; /* C-x C-@ */
  70 static int   m_prefix_length = 2;       /* mouse_prefix length */
  71
  72 static char *key_prefix = "\030*";      /* C-x *   */
  73 static int   k_prefix_length = 2;       /* key_prefix length */
  74
  75 #ifdef JLE
  76 static char *emacs_name = "nemacs";     /* default run command */
  77 static char *title = "NEmacstool - ";   /* initial title */
  78 #else
  79 static char *emacs_name = "emacs";      /* default run command */
  80 static char *title = "Emacstool - ";    /* initial title */
  81 #endif JLE
  82
  83 static char buffer[BUFFER_SIZE];        /* send to ttysw_input */
  84 static char *bold_name = 0;             /* for -bold option */
  85
  86 Frame frame;                            /* Base frame for system */
  87
  88 #ifndef TTERM
  89 #define SWTYPE TTY
  90 Tty tty_win;                            /* Where emacs is reading */
  91 #else
  92 #define SWTYPE TERMSW
  93 Termsw tty_win;                         /* Termsw does follow-mouse */
  94 #endif TTERM
  95
  96 #ifdef XVIEW
  97 Xv_Window tty_view;                     /* Where the events are in Xview*/
  98 #else
  99 Tty tty_view;                           /* SunView place filler */
 100 #endif XVIEW
 101
 102 int font_width, font_height;            /* For translating pixels to chars */
 103 int left_margin = 0;            /* default window -- frame offset */
 104
 105 int console_fd = 0;             /* for debugging: setenv DEBUGEMACSTOOL */
 106 FILE *console;                  /* for debugging: setenv DEBUGEMACSTOOL */
 107
 108 Icon frame_icon;
 109 /* make an icon_image for the default frame_icon */
 110 static short default_image[258] =
 111 {
 112 #include <images/terminal.icon>
 113 };
 114 mpr_static(icon_image, 64, 64, 1, default_image);
 115 \f
 116 /*
 117  * Assign a value to a set of keys
 118  */
 119 int
 120 button_value (event)
 121      Event *event;
 122 {
 123   int retval = 0;
 124   /*
 125    * Code up the current situation:
 126    *
 127    * 1 = MS_LEFT;
 128    * 2 = MS_MIDDLE;
 129    * 4 = MS_RIGHT;
 130    * 8 = SHIFT;
 131    * 16 = CONTROL;
 132    * 32 = META;
 133    * 64 = DOUBLE;
 134    * 128 = UP;
 135    */
 136
 137   if (MS_LEFT   == (event_id (event))) retval = 1;
 138   if (MS_MIDDLE == (event_id (event))) retval = 2;
 139   if (MS_RIGHT  == (event_id (event))) retval = 4;
 140
 141   if (event_shift_is_down (event)) retval += 8;
 142   if (event_ctrl_is_down  (event)) retval += 16;
 143   if (event_meta_is_down  (event)) retval += 32;
 144   if (event_is_up         (event)) retval += 128;
 145   return retval;
 146 }
 147 \f
 148 /*
 149  *  Variables to store the time of the previous mouse event that was
 150  *  sent to emacs.
 151  *
 152  *  The theory is that to time double clicks while ignoreing UP buttons,
 153  *  we must keep track of the accumulated time.
 154  *
 155  *  If someone writes a SUN-SET-INPUT-MASK for emacstool,
 156  *  That could be used to selectively disable UP events,
 157  *  and then this cruft wouldn't be necessary.
 158  */
 159 static long prev_event_sec = 0;
 160 static long prev_event_usec = 0;
 161
 162 /*
 163  *  Give the time difference in milliseconds, where one second
 164  *  is considered infinite.
 165  */
 166 int
 167 time_delta (now_sec, now_usec, prev_sec, prev_usec)
 168      long now_sec, now_usec, prev_sec, prev_usec;
 169 {
 170   long sec_delta = now_sec - prev_sec;
 171   long usec_delta = now_usec - prev_usec;
 172
 173   if (usec_delta < 0) {         /* "borrow" a second */
 174     usec_delta += 1000000;
 175     --sec_delta;
 176   }
 177
 178   if (sec_delta >= 10)
 179     return (9999);              /* Infinity */
 180   else
 181     return ((sec_delta * 1000) + (usec_delta / 1000));
 182 }
 183
 184 \f
 185 /*
 186  * Filter function to translate selected input events for emacs
 187  * Mouse button events become ^X^@(button x-col y-line time-delta) .
 188  * Function keys: ESC-*{c}{lrt} l,r,t for Left, Right, Top;
 189  * {c} encodes the keynumber as a character [a-o]
 190  */
 191 static Notify_value
 192 input_event_filter_function (window, event, arg, type)
 193 #ifdef XVIEW
 194      Xv_Window window;
 195 #else
 196      Window window;
 197 #endif XVIEW
 198      Event *event;
 199      Notify_arg arg;
 200      Notify_event_type type;
 201 {
 202   struct timeval time_stamp;
 203
 204   if (console_fd) fprintf(console, "Event: %d\n", event_id(event));
 205
 206   /* UP L1 is the STOP key */
 207   if (event_id(event) == WIN_STOP) {
 208     ttysw_input(tty_win, "\007\007\007\007\007\007\007", 7);
 209     return NOTIFY_IGNORED;
 210   }
 211
 212   /* UP L5 & L7 is Expose & Open, let them pass to sunview */
 213   if (event_id(event) == KEY_LEFT(5) || event_id(event) == KEY_LEFT(7))
 214     if(event_is_up (event))
 215       return notify_next_event_func (window, event, arg, type);
 216     else return NOTIFY_IGNORED;
 217
 218   if (event_is_button (event)) {              /* do Mouse Button events */
 219 /* Commented out so that we send mouse up events too.
 220    if (event_is_up (event))
 221       return notify_next_event_func (window, event, arg, type);
 222 */
 223     time_stamp = event_time (event);
 224     ttysw_input (tty_win, mouse_prefix, m_prefix_length);
 225     sprintf (buffer, "(%d %d %d %d)\015",
 226              button_value (event),
 227              (event_x (event) - left_margin) / font_width,
 228              event_y (event) / font_height,
 229              time_delta (time_stamp.tv_sec, time_stamp.tv_usec,
 230                          prev_event_sec, prev_event_usec)
 231              );
 232     ttysw_input (tty_win, buffer, strlen(buffer));
 233     prev_event_sec = time_stamp.tv_sec;
 234     prev_event_usec = time_stamp.tv_usec;
 235     return NOTIFY_IGNORED;
 236   }
 237
 238   { /* Do the function key events */
 239     int d;
 240     char c = (char) 0;
 241     if ((event_is_key_left  (event)) ?
 242         ((d = event_id(event) - KEY_LEFT(1)   + 'a'), c='l') :
 243         ((event_is_key_right (event)) ?
 244          ((d = event_id(event) - KEY_RIGHT(1) + 'a'), c='r') :
 245          ((event_is_key_top   (event)) ?
 246           ((d = event_id(event) - KEY_TOP(1)  + 'a'), c='t') : 0)))
 247       {
 248         if (event_is_up(event)) return NOTIFY_IGNORED;
 249         if (event_shift_is_down (event)) c = c -  32;
 250         /* this will give a non-{lrt} for unshifted keys */
 251         if (event_ctrl_is_down  (event)) c = c -  64;
 252         if (event_meta_is_down  (event)) c = c + 128;
 253 #ifdef WANT_CAPS_LOCK
 254 /* set a toggle and relabel window so T1 can act like caps-lock */
 255         if (event_id(event) == KEY_TOP(1))
 256           {
 257             /* make a frame label with and without CAPS */
 258             strcpy (buffer, Caps);
 259             title = &buffer[CAPS_LEN];
 260             strncpy (title, (char *)window_get (frame, FRAME_LABEL),
 261                      BUFFER_SIZE - CAPS_LEN);
 262             buffer[BUFFER_SIZE] = (char) 0;
 263             if (strncmp (title, Caps, CAPS_LEN) == 0)
 264               title += CAPS_LEN;                 /* already Caps */
 265             caps_lock =  (caps_lock ? 0 : CAPS_LEN);
 266             window_set(frame, FRAME_LABEL, (title -= caps_lock), 0);
 267             return NOTIFY_IGNORED;
 268           }
 269 #endif
 270         ttysw_input (tty_win, key_prefix, k_prefix_length);
 271         sprintf (buffer, "%c%c", d, c);
 272         ttysw_input(tty_win, buffer, strlen(buffer));
 273
 274         return NOTIFY_IGNORED;
 275       }
 276   }
 277   if ((event_is_ascii(event) || event_is_meta(event))
 278       && event_is_up(event)) return NOTIFY_IGNORED;
 279 #ifdef WANT_CAPS_LOCK
 280 /* shift alpha chars to upper case if toggle is set */
 281   if ((caps_lock) && event_is_ascii(event)
 282       && (event_id(event) >= 'a') && (event_id(event) <= 'z'))
 283     event_set_id(event, (event_id(event) - 32));
 284 /* crufty, but it works for now. is there an UPCASE(event)? */
 285 #endif
 286 #ifndef NO_META_BIT
 287 /* under Openwindows/X, the meta bit is not set in the key event,
 288  * emacs expects this so we add it in here:
 289  */
 290   if (event_is_ascii(event) && event_meta_is_down(event))
 291     event_set_id(event, 128 | event_id(event));
 292 #endif
 293   return notify_next_event_func (window, event, arg, type);
 294 }
 295 \f
 296 main (argc, argv)
 297      int argc;
 298      char **argv;
 299 {
 300   int error_code;       /* Error codes */
 301
 302 #ifdef JLE
 303   setlocale(LC_ALL, "");
 304 #endif JLE
 305
 306   if(getenv("DEBUGEMACSTOOL"))
 307     console = fdopen (console_fd = open("/dev/console",O_WRONLY), "w");
 308
 309   putenv("IN_EMACSTOOL=t");     /* notify subprocess that it is in emacstool */
 310
 311   if (putenv("TERM=sun") != 0)  /* TTY_WIN will be a TERM=sun window */
 312     {fprintf (stderr, "%s: Could not set TERM=sun, using `%s'\n",
 313              argv[0], (char *)getenv("TERM")) ;};
 314   /*
 315    * If TERMCAP starts with a slash, it is the pathname of the
 316    * termcap file, not an entry extracted from it, so KEEP it!
 317    * Otherwise, it may not relate to the new TERM, so Nuke-It.
 318    * If there is no TERMCAP environment variable, don't make one.
 319    */
 320   {
 321     char *termcap ;     /* Current TERMCAP value */
 322     termcap = (char *)getenv("TERMCAP") ;
 323     if (termcap && (*termcap != '/'))
 324       {
 325         if (putenv("TERMCAP=") != 0)
 326           {fprintf (stderr, "%s: Could not clear TERMCAP\n", argv[0]) ;} ;
 327       } ;
 328   } ;
 329
 330   /* find command to run as subprocess in window */
 331   if (!(argv[0] = (char *)getenv("EMACSTOOL"))) /*  Set emacs command name */
 332       argv[0] = emacs_name;
 333   /* Emacstool recognizes two special args: -rc <file> and -bold <bold-name> */
 334   for (argc = 1; argv[argc]; argc++)            /* Use last one on line */
 335     {
 336       if(!(strcmp ("-rc", argv[argc])))         /* Override if -rc given */
 337         {int i = argc;
 338          argv[argc--]=0;                /* kill the -rc argument */
 339          if (argv[i+1]) {       /* move to argv[0] and squeeze the rest */
 340            argv[0]=argv[i+1];
 341            for (; argv[i+2]; (argv[i]=argv[i+2],argv[++i]=0));
 342          }
 343        }
 344
 345       if (!(strcmp ("-bold", argv[argc])))
 346           {int i = argc;
 347            argv[argc--]=0;              /* kill the -bold argument */
 348            if (argv[i+1]) {     /* move to bold_name and squeeze the rest */
 349                bold_name = argv[i+1];
 350                for (; argv[i+2]; (argv[i]=argv[i+2],argv[++i]=0));
 351            }
 352        }
 353   };
 354
 355   strcpy (buffer, title);
 356   strncat (buffer, argv[0],              /* append run command name */
 357            (BUFFER_SIZE - (strlen (buffer)) - (strlen (argv[0]))) - 1);
 358
 359   error_code = interpose_on_window(argc,argv);
 360   if (error_code != 0) {                /* Barf */
 361       fprintf (stderr, "notify_interpose_event_func returns %d.\n", error_code);
 362       exit (1);
 363   }
 364
 365 #ifdef XVIEW
 366   xv_main_loop (frame);                  /* And away we go */
 367 #else
 368   window_main_loop (frame);
 369 #endif XVIEW
 370 }
 371
 372 #ifdef XVIEW
 373 int interpose_on_window(argc,argv)
 374     int argc;
 375     char **argv;
 376 {
 377 #ifndef TTERM
 378     int i, font_width_adjust = 1; /* hackery, and hueristics */
 379     /* if -Wt is not supplied, then font comes out as lucida-14 (width=8)
 380      * rather than the screen.r.12 (width=7) typically used
 381      * this hack attempts to workaround it.
 382      * could use a env var EMACSTOOL_DEFAULT_FONT_WIDTH instead */
 383     for (i = 1; argv[i]; i++) {
 384         if (!(strcmp ("-Wt", argv[i])))
 385             {font_width_adjust = 0;
 386              if (console_fd) fprintf(console, "-Wt = %d\n", font_width_adjust);
 387              break;}
 388     }
 389 #endif TTERM
 390     /* initialize Xview, and strip window args */
 391     xv_init(XV_INIT_ARGC_PTR_ARGV, &argc, argv, 0);
 392
 393     /* do this first, so arglist can override it */
 394     frame_icon = icon_create (ICON_LABEL, "Emacstool",
 395                               ICON_IMAGE, &icon_image,
 396                               0);
 397
 398     /* Build a frame to run in */
 399     frame = xv_create ((Xv_Window)NULL, FRAME,
 400                        FRAME_LABEL, buffer,
 401                        FRAME_ICON, frame_icon,
 402                        0);
 403
 404     /* Create a tty with emacs in it */
 405     tty_win = xv_create (frame, SWTYPE, WIN_IS_CLIENT_PANE,
 406                          TTY_QUIT_ON_CHILD_DEATH, TRUE,
 407                          TTY_BOLDSTYLE, TTYSW_BOLD_INVERT,
 408                          TTY_ARGV, argv,
 409                          0);
 410
 411     if (bold_name) {
 412         (void)xv_set(tty_win, TTY_BOLDSTYLE_NAME, bold_name, 0);
 413     }
 414
 415     {
 416         Xv_font font;           /* declare temp font variable */
 417         font = (Xv_font)xv_get (tty_win, XV_FONT);
 418         font_height = (int)xv_get (font, FONT_DEFAULT_CHAR_HEIGHT);
 419         font_width  = (int)xv_get (font, FONT_DEFAULT_CHAR_WIDTH);
 420     }
 421     if (console_fd) fprintf(console, "Width = %d\n", font_width);
 422
 423 #ifndef TTERM
 424     font_width -= font_width_adjust; /* A guess! font bug in ttysw*/
 425 #else
 426     /* make the termsw act as a tty */
 427     xv_set(tty_win, TERMSW_MODE, TTYSW_MODE_TYPE, 0);
 428     /* termsw has variable offset depending on scrollbar size/location */
 429     left_margin = (int)xv_get (tty_win, TEXTSW_LEFT_MARGIN);
 430 #endif TTERM
 431
 432     tty_view = (Xv_Window) xv_get (tty_win, OPENWIN_NTH_VIEW, 0);
 433     xv_set(tty_view,
 434            WIN_CONSUME_EVENTS,
 435            WIN_MOUSE_BUTTONS, WIN_UP_EVENTS,
 436            ACTION_ADJUST, ACTION_MENU,
 437            WIN_ASCII_EVENTS,
 438            WIN_LEFT_KEYS, WIN_TOP_KEYS, WIN_RIGHT_KEYS,
 439            0,
 440            0);
 441     /* Interpose my event function */
 442     return (int) notify_interpose_event_func
 443         (tty_view, input_event_filter_function, NOTIFY_SAFE);
 444 }
 445 #else
 446 int interpose_on_window (argc, argv)
 447  int argc;
 448  char **argv;
 449 {
 450     /* do this first, so arglist can override it */
 451     frame_icon = icon_create (ICON_LABEL, "Emacstool",
 452                               ICON_IMAGE, &icon_image,
 453                               0);
 454
 455     /* Build a frame to run in */
 456     frame = window_create ((Window)NULL, FRAME,
 457                            FRAME_LABEL, buffer,
 458                            FRAME_ICON, frame_icon,
 459                            FRAME_ARGC_PTR_ARGV, &argc, argv,
 460                            0);
 461
 462     /* Create a tty with emacs in it */
 463     tty_win = window_create (frame, TTY,
 464                              TTY_QUIT_ON_CHILD_DEATH, TRUE,
 465                              TTY_BOLDSTYLE, TTYSW_BOLD_INVERT,
 466                              TTY_ARGV, argv,
 467                              0);
 468
 469     if (bold_name) {
 470         (void)window_set(tty_win, TTY_BOLDSTYLE_NAME, bold_name, 0);
 471     }
 472
 473     /* ttysw uses pf_default, one must set WIN_FONT explicitly */
 474                        window_set (tty_win, WIN_FONT, pf_default(), 0);
 475     font_height = (int)window_get (tty_win, WIN_ROW_HEIGHT);
 476     font_width  = (int)window_get (tty_win, WIN_COLUMN_WIDTH);
 477
 478     tty_view = tty_win;
 479     window_set(tty_view,
 480                WIN_CONSUME_PICK_EVENTS,
 481                WIN_STOP,
 482                WIN_MOUSE_BUTTONS, WIN_UP_EVENTS,
 483                /* LOC_WINENTER, LOC_WINEXIT, LOC_MOVE, */
 484                0,
 485                WIN_CONSUME_KBD_EVENTS,
 486                WIN_STOP,
 487                WIN_ASCII_EVENTS,
 488                WIN_LEFT_KEYS, WIN_TOP_KEYS, WIN_RIGHT_KEYS,
 489                /* WIN_UP_ASCII_EVENTS, */
 490                0,
 491                0);
 492     /* Interpose my event function */
 493     return (int) notify_interpose_event_func
 494         (tty_view, input_event_filter_function, NOTIFY_SAFE);
 495 }
 496 #endif XVIEW