From a2535589a9b419920395f37ef658a3c88bf13ecb Mon Sep 17 00:00:00 2001 From: Joseph Arceneaux Date: Tue, 31 Oct 1989 16:00:07 +0000 Subject: Initial revision --- lib-src/emacstool.c | 340 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 340 insertions(+) create mode 100644 lib-src/emacstool.c (limited to 'lib-src/emacstool.c') diff --git a/lib-src/emacstool.c b/lib-src/emacstool.c new file mode 100644 index 0000000000..5e310e0faa --- /dev/null +++ b/lib-src/emacstool.c @@ -0,0 +1,340 @@ +/* + * + * Copyright (C) 1986 Free Software Foundation, Inc. + * + * This file is part of GNU Emacs. + +GNU Emacs is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 1, or (at your option) +any later version. + +GNU Emacs is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Emacs; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + * + * + * For Emacs in SunView/Sun-Windows: (supported by Sun Unix v3.2) + * Insert a notifier filter-function to convert all useful input + * to "key" sequences that emacs can understand. See: Emacstool(1). + * + * Author: Jeff Peck, Sun Microsystems, Inc. + * + * Original Idea: Ian Batten + * Updated 15-Mar-88, Jeff Peck: set IN_EMACSTOOL, TERM, TERMCAP + * + */ + +#include +#include +#include +#include + +#define BUFFER_SIZE 128 /* Size of all the buffers */ + +/* define WANT_CAPS_LOCK to make f-key T1 (aka F1) behave as CapsLock */ +#define WANT_CAPS_LOCK +#ifdef WANT_CAPS_LOCK +int caps_lock; /* toggle indicater for f-key T1 caps lock */ +static char *Caps = "[CAPS] "; /* Caps Lock prefix string */ +#define CAPS_LEN 7 /* strlen (Caps) */ +#endif + +static char *mouse_prefix = "\030\000"; /* C-x C-@ */ +static int m_prefix_length = 2; /* mouse_prefix length */ + +static char *key_prefix = "\030*"; /* C-x * */ +static int k_prefix_length = 2; /* key_prefix length */ + +static char *emacs_name = "emacs"; /* default run command */ +static char buffer[BUFFER_SIZE]; /* send to ttysw_input */ +static char *title = "Emacstool - "; /* initial title */ + +Frame frame; /* Base frame for system */ +Tty ttysw; /* Where emacs is */ +int font_width, font_height; /* For translating pixels to chars */ + +int console_fd = 0; /* for debugging: setenv DEBUGEMACSTOOL */ +FILE *console; /* for debugging: setenv DEBUGEMACSTOOL */ + +Icon frame_icon; +/* make an icon_image for the default frame_icon */ +static short default_image[258] = +{ +#include +}; +mpr_static(icon_image, 64, 64, 1, default_image); + + +/* + * Assign a value to a set of keys + */ +int +button_value (event) + Event *event; +{ + int retval = 0; + /* + * Code up the current situation: + * + * 1 = MS_LEFT; + * 2 = MS_MIDDLE; + * 4 = MS_RIGHT; + * 8 = SHIFT; + * 16 = CONTROL; + * 32 = META; + * 64 = DOUBLE; + * 128 = UP; + */ + + if (MS_LEFT == (event_id (event))) retval = 1; + if (MS_MIDDLE == (event_id (event))) retval = 2; + if (MS_RIGHT == (event_id (event))) retval = 4; + + if (event_shift_is_down (event)) retval += 8; + if (event_ctrl_is_down (event)) retval += 16; + if (event_meta_is_down (event)) retval += 32; + if (event_is_up (event)) retval += 128; + return retval; +} + +/* + * Variables to store the time of the previous mouse event that was + * sent to emacs. + * + * The theory is that to time double clicks while ignoreing UP buttons, + * we must keep track of the accumulated time. + * + * If someone writes a SUN-SET-INPUT-MASK for emacstool, + * That could be used to selectively disable UP events, + * and then this cruft wouldn't be necessary. + */ +static long prev_event_sec = 0; +static long prev_event_usec = 0; + +/* + * Give the time difference in milliseconds, where one second + * is considered infinite. + */ +int +time_delta (now_sec, now_usec, prev_sec, prev_usec) + long now_sec, now_usec, prev_sec, prev_usec; +{ + long sec_delta = now_sec - prev_sec; + long usec_delta = now_usec - prev_usec; + + if (usec_delta < 0) { /* "borrow" a second */ + usec_delta += 1000000; + --sec_delta; + } + + if (sec_delta >= 10) + return (9999); /* Infinity */ + else + return ((sec_delta * 1000) + (usec_delta / 1000)); +} + + +/* + * Filter function to translate selected input events for emacs + * Mouse button events become ^X^@(button x-col y-line time-delta) . + * Function keys: ESC-*{c}{lrt} l,r,t for Left, Right, Top; + * {c} encodes the keynumber as a character [a-o] + */ +static Notify_value +input_event_filter_function (window, event, arg, type) + Window window; + Event *event; + Notify_arg arg; + Notify_event_type type; +{ + struct timeval time_stamp; + + if (console_fd) fprintf(console, "Event: %d\n", event_id(event)); + + /* UP L1 is the STOP key */ + if (event_id(event) == WIN_STOP) { + ttysw_input(ttysw, "\007\007\007\007\007\007\007", 7); + return NOTIFY_IGNORED; + } + + /* UP L5 & L7 is Expose & Open, let them pass to sunview */ + if (event_id(event) == KEY_LEFT(5) || event_id(event) == KEY_LEFT(7)) + if(event_is_up (event)) + return notify_next_event_func (window, event, arg, type); + else return NOTIFY_IGNORED; + + if (event_is_button (event)) { /* do Mouse Button events */ +/* Commented out so that we send mouse up events too. + if (event_is_up (event)) + return notify_next_event_func (window, event, arg, type); +*/ + time_stamp = event_time (event); + ttysw_input (ttysw, mouse_prefix, m_prefix_length); + sprintf (buffer, "(%d %d %d %d)\015", + button_value (event), + event_x (event) / font_width, + event_y (event) / font_height, + time_delta (time_stamp.tv_sec, time_stamp.tv_usec, + prev_event_sec, prev_event_usec) + ); + ttysw_input (ttysw, buffer, strlen(buffer)); + prev_event_sec = time_stamp.tv_sec; + prev_event_usec = time_stamp.tv_usec; + return NOTIFY_IGNORED; + } + + { /* Do the function key events */ + int d; + char c = (char) 0; + if ((event_is_key_left (event)) ? + ((d = event_id(event) - KEY_LEFT(1) + 'a'), c='l') : + ((event_is_key_right (event)) ? + ((d = event_id(event) - KEY_RIGHT(1) + 'a'), c='r') : + ((event_is_key_top (event)) ? + ((d = event_id(event) - KEY_TOP(1) + 'a'), c='t') : 0))) + { + if (event_is_up(event)) return NOTIFY_IGNORED; + if (event_shift_is_down (event)) c = c - 32; + /* this will give a non-{lrt} for unshifted keys */ + if (event_ctrl_is_down (event)) c = c - 64; + if (event_meta_is_down (event)) c = c + 128; +#ifdef WANT_CAPS_LOCK +/* set a toggle and relabel window so T1 can act like caps-lock */ + if (event_id(event) == KEY_TOP(1)) + { + /* make a frame label with and without CAPS */ + strcpy (buffer, Caps); + title = &buffer[CAPS_LEN]; + strncpy (title, (char *)window_get (frame, FRAME_LABEL), + BUFFER_SIZE - CAPS_LEN); + buffer[BUFFER_SIZE] = (char) 0; + if (strncmp (title, Caps, CAPS_LEN) == 0) + title += CAPS_LEN; /* already Caps */ + caps_lock = (caps_lock ? 0 : CAPS_LEN); + window_set(frame, FRAME_LABEL, (title -= caps_lock), 0); + return NOTIFY_IGNORED; + } +#endif + ttysw_input (ttysw, key_prefix, k_prefix_length); + sprintf (buffer, "%c%c", d, c); + ttysw_input(ttysw, buffer, strlen(buffer)); + + return NOTIFY_IGNORED; + } + } + if ((event_is_ascii(event) || event_is_meta(event)) + && event_is_up(event)) return NOTIFY_IGNORED; +#ifdef WANT_CAPS_LOCK +/* shift alpha chars to upper case if toggle is set */ + if ((caps_lock) && event_is_ascii(event) + && (event_id(event) >= 'a') && (event_id(event) <= 'z')) + event_set_id(event, (event_id(event) - 32)); +/* crufty, but it works for now. is there an UPCASE(event)? */ +#endif + return notify_next_event_func (window, event, arg, type); +} + +main (argc, argv) + int argc; + char **argv; +{ + int error_code; /* Error codes */ + + if(getenv("DEBUGEMACSTOOL")) + console = fdopen (console_fd = open("/dev/console",O_WRONLY), "w"); + + /* do this first, so arglist can override it */ + frame_icon = icon_create (ICON_LABEL, "Emacstool", + ICON_IMAGE, &icon_image, + 0); + + putenv("IN_EMACSTOOL=t"); /* notify subprocess that it is in emacstool */ + + if (putenv("TERM=sun") != 0) /* TTYSW will be a TERM=sun window */ + {fprintf (stderr, "%s: Could not set TERM=sun, using `%s'\n", + argv[0], (char *)getenv("TERM")) ;}; + /* + * If TERMCAP starts with a slash, it is the pathname of the + * termcap file, not an entry extracted from it, so KEEP it! + * Otherwise, it may not relate to the new TERM, so Nuke-It. + * If there is no TERMCAP environment variable, don't make one. + */ + { + char *termcap ; /* Current TERMCAP value */ + termcap = (char *)getenv("TERMCAP") ; + if (termcap && (*termcap != '/')) + { + if (putenv("TERMCAP=") != 0) + {fprintf (stderr, "%s: Could not clear TERMCAP\n", argv[0]) ;} ; + } ; + } ; + + /* find command to run as subprocess in window */ + if (!(argv[0] = (char *)getenv("EMACSTOOL"))) /* Set emacs command name */ + argv[0] = emacs_name; + for (argc = 1; argv[argc]; argc++) /* Use last one on line */ + if(!(strcmp ("-rc", argv[argc]))) /* Override if -rc given */ + { + int i = argc; + argv[argc--]=0; /* kill the -rc argument */ + if (argv[i+1]) { /* move to agrv[0] and squeeze the rest */ + argv[0]=argv[i+1]; + for (; argv[i+2]; (argv[i]=argv[i+2],argv[++i]=0)); + } + } + + strcpy (buffer, title); + strncat (buffer, argv[0], /* append run command name */ + (BUFFER_SIZE - (strlen (buffer)) - (strlen (argv[0]))) - 1); + + /* Build a frame to run in */ + frame = window_create ((Window)NULL, FRAME, + FRAME_LABEL, buffer, + FRAME_ICON, frame_icon, + FRAME_ARGC_PTR_ARGV, &argc, argv, + 0); + + /* Create a tty with emacs in it */ + ttysw = window_create (frame, TTY, + TTY_QUIT_ON_CHILD_DEATH, TRUE, + TTY_BOLDSTYLE, 8, + TTY_ARGV, argv, + 0); + + window_set(ttysw, + WIN_CONSUME_PICK_EVENTS, + WIN_STOP, + WIN_MOUSE_BUTTONS, WIN_UP_EVENTS, + /* LOC_WINENTER, LOC_WINEXIT, LOC_MOVE, */ + 0, + + WIN_CONSUME_KBD_EVENTS, + WIN_STOP, + WIN_ASCII_EVENTS, + WIN_LEFT_KEYS, WIN_TOP_KEYS, WIN_RIGHT_KEYS, + /* WIN_UP_ASCII_EVENTS, */ + 0, + + 0); + + font_height = (int)window_get (ttysw, WIN_ROW_HEIGHT); + font_width = (int)window_get (ttysw, WIN_COLUMN_WIDTH); + + /* Interpose my event function */ + error_code = (int) notify_interpose_event_func + (ttysw, input_event_filter_function, NOTIFY_SAFE); + + if (error_code != 0) /* Barf */ + { + fprintf (stderr, "notify_interpose_event_func got %d.\n", error_code); + exit (1); + } + + window_main_loop (frame); /* And away we go */ +} -- cgit v1.2.3