Mercurial > hg > xemacs-beta
annotate src/gpmevent.c @ 4985:358aa3bb603f
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| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Fri, 05 Feb 2010 12:12:28 -0600 |
| parents | 304aebb79cd3 |
| children | 2aa9cd456ae7 |
| rev | line source |
|---|---|
| 440 | 1 /* GPM (General purpose mouse) functions |
| 428 | 2 Copyright (C) 1997 William M. Perry <wmperry@gnu.org> |
| 3 Copyright (C) 1999 Free Software Foundation, Inc. | |
| 793 | 4 Copyright (C) 2002 Ben Wing. |
| 5 | |
| 6 This file is part of XEmacs. | |
| 7 | |
| 8 XEmacs is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 10 Free Software Foundation; either version 2, or (at your option) any | |
| 11 later version. | |
| 12 | |
| 13 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with XEmacs; see the file COPYING. If not, write to | |
| 20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 21 Boston, MA 02111-1307, USA. */ | |
| 428 | 22 |
| 23 /* Synched up with: Not in FSF. */ | |
| 24 | |
| 25 /* Authors: William Perry */ | |
| 26 | |
| 27 #include <config.h> | |
| 28 #include "lisp.h" | |
| 793 | 29 |
| 30 #include "commands.h" | |
| 31 #include "console-tty.h" | |
| 428 | 32 #include "console.h" |
| 33 #include "device.h" | |
| 34 #include "events.h" | |
| 793 | 35 #include "lstream.h" |
| 36 #include "process.h" | |
| 428 | 37 #include "sysdep.h" |
| 876 | 38 #include "frame.h" |
| 39 #include "device-impl.h" | |
| 40 #include "console-impl.h" | |
| 41 #include "console-tty-impl.h" | |
| 793 | 42 |
| 428 | 43 #include "sysproc.h" /* for MAXDESC */ |
| 44 | |
| 45 #ifdef HAVE_GPM | |
| 46 #include "gpmevent.h" | |
| 47 #include <gpm.h> | |
| 48 | |
| 49 #define KG_SHIFT 0 | |
| 50 #define KG_CTRL 2 | |
| 51 #define KG_ALT 3 | |
| 52 | |
| 53 extern int gpm_tried; | |
| 54 extern void *gpm_stack; | |
| 55 | |
| 56 static int (*orig_event_pending_p) (int); | |
| 440 | 57 static void (*orig_next_event_cb) (Lisp_Event *); |
| 428 | 58 |
| 59 static Lisp_Object gpm_event_queue; | |
| 60 static Lisp_Object gpm_event_queue_tail; | |
| 61 | |
| 793 | 62 struct __gpm_state |
| 63 { | |
| 64 int gpm_tried; | |
| 65 int gpm_flag; | |
| 66 void *gpm_stack; | |
| 428 | 67 }; |
| 68 | |
| 69 static struct __gpm_state gpm_state_information[MAXDESC]; | |
| 70 | |
| 71 static void | |
| 72 store_gpm_state (int fd) | |
| 73 { | |
| 793 | 74 gpm_state_information[fd].gpm_tried = gpm_tried; |
| 75 gpm_state_information[fd].gpm_flag = gpm_flag; | |
| 76 gpm_state_information[fd].gpm_stack = gpm_stack; | |
| 428 | 77 } |
| 78 | |
| 79 static void | |
| 80 restore_gpm_state (int fd) | |
| 81 { | |
| 793 | 82 gpm_tried = gpm_state_information[fd].gpm_tried; |
| 83 gpm_flag = gpm_state_information[fd].gpm_flag; | |
| 84 gpm_stack = gpm_state_information[fd].gpm_stack; | |
| 85 gpm_consolefd = gpm_fd = fd; | |
| 428 | 86 } |
| 87 | |
| 88 static void | |
| 89 clear_gpm_state (int fd) | |
| 90 { | |
| 793 | 91 if (fd >= 0) |
| 92 memset (&gpm_state_information[fd], '\0', sizeof (struct __gpm_state)); | |
| 93 gpm_tried = gpm_flag = 1; | |
| 94 gpm_fd = gpm_consolefd = -1; | |
| 95 gpm_stack = NULL; | |
| 428 | 96 } |
| 97 | |
| 98 static int | |
| 440 | 99 get_process_infd (Lisp_Process *p) |
| 428 | 100 { |
| 853 | 101 Lisp_Object instr, outstr, errstr; |
| 102 get_process_streams (p, &instr, &outstr, &errstr); | |
| 428 | 103 assert (!NILP (instr)); |
| 104 return filedesc_stream_fd (XLSTREAM (instr)); | |
| 105 } | |
| 106 | |
| 107 DEFUN ("receive-gpm-event", Freceive_gpm_event, 0, 2, 0, /* | |
| 108 Run GPM_GetEvent(). | |
| 109 This function is the process handler for the GPM connection. | |
| 110 */ | |
| 2286 | 111 (process, UNUSED (string))) |
| 428 | 112 { |
| 793 | 113 Gpm_Event ev; |
| 114 int modifiers = 0; | |
| 115 int button = 1; | |
| 116 Lisp_Object fake_event = Qnil; | |
| 117 Lisp_Event *event = NULL; | |
| 118 struct gcpro gcpro1; | |
| 119 static int num_events; | |
| 428 | 120 |
| 793 | 121 CHECK_PROCESS (process); |
| 428 | 122 |
| 793 | 123 restore_gpm_state (get_process_infd (XPROCESS (process))); |
| 428 | 124 |
| 793 | 125 if (!Gpm_GetEvent (&ev)) |
| 126 { | |
| 127 warn_when_safe (Qnil, Qerror, | |
| 128 "Gpm_GetEvent failed - %d", gpm_fd); | |
| 129 return (Qzero); | |
| 130 } | |
| 428 | 131 |
| 793 | 132 GCPRO1 (fake_event); |
| 428 | 133 |
| 793 | 134 num_events++; |
| 135 | |
| 136 fake_event = Fmake_event (Qnil, Qnil); | |
| 137 event = XEVENT (fake_event); | |
| 428 | 138 |
| 793 | 139 event->timestamp = 0; |
| 140 event->channel = Fselected_frame (Qnil); /* CONSOLE_SELECTED_FRAME (con); */ | |
| 428 | 141 |
| 793 | 142 /* Whow, wouldn't named defines be NICE!?!?! */ |
| 143 modifiers = 0; | |
| 428 | 144 |
| 793 | 145 if (ev.modifiers & 1) modifiers |= XEMACS_MOD_SHIFT; |
| 146 if (ev.modifiers & 2) modifiers |= XEMACS_MOD_META; | |
| 147 if (ev.modifiers & 4) modifiers |= XEMACS_MOD_CONTROL; | |
| 148 if (ev.modifiers & 8) modifiers |= XEMACS_MOD_META; | |
| 149 | |
| 150 if (ev.buttons & GPM_B_LEFT) | |
| 151 button = 1; | |
| 152 else if (ev.buttons & GPM_B_MIDDLE) | |
| 153 button = 2; | |
| 154 else if (ev.buttons & GPM_B_RIGHT) | |
| 155 button = 3; | |
| 428 | 156 |
| 793 | 157 switch (GPM_BARE_EVENTS (ev.type)) |
| 158 { | |
| 159 case GPM_DOWN: | |
| 160 case GPM_UP: | |
| 934 | 161 SET_EVENT_TYPE (event, |
| 162 (ev.type & GPM_DOWN) ? button_press_event : button_release_event); | |
| 1204 | 163 SET_EVENT_BUTTON_X (event, ev.x); |
| 164 SET_EVENT_BUTTON_Y (event, ev.y); | |
| 165 SET_EVENT_BUTTON_BUTTON (event, button); | |
| 166 SET_EVENT_BUTTON_MODIFIERS (event, modifiers); | |
| 793 | 167 break; |
| 168 case GPM_MOVE: | |
| 169 case GPM_DRAG: | |
| 934 | 170 SET_EVENT_TYPE (event, pointer_motion_event); |
| 1204 | 171 SET_EVENT_MOTION_X (event, ev.x); |
| 172 SET_EVENT_MOTION_Y (event, ev.y); | |
| 173 SET_EVENT_MOTION_MODIFIERS (event, modifiers); | |
| 793 | 174 default: |
| 175 /* This will never happen */ | |
| 176 break; | |
| 177 } | |
| 428 | 178 |
| 793 | 179 /* Handle the event */ |
| 180 enqueue_event (fake_event, &gpm_event_queue, &gpm_event_queue_tail); | |
| 428 | 181 |
| 793 | 182 UNGCPRO; |
| 428 | 183 |
| 793 | 184 return (Qzero); |
| 428 | 185 } |
| 186 | |
| 187 static void turn_off_gpm (char *process_name) | |
| 188 { | |
|
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189 Lisp_Object process = Fget_process (build_cistring (process_name)); |
| 793 | 190 int fd = -1; |
| 428 | 191 |
| 793 | 192 if (NILP (process)) |
| 193 /* Something happened to our GPM process - fail silently */ | |
| 194 return; | |
| 428 | 195 |
| 793 | 196 fd = get_process_infd (XPROCESS (process)); |
| 428 | 197 |
| 793 | 198 restore_gpm_state (fd); |
| 428 | 199 |
| 793 | 200 Gpm_Close(); |
| 428 | 201 |
| 793 | 202 clear_gpm_state (fd); |
| 428 | 203 |
|
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changeset
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204 Fdelete_process (build_cistring (process_name)); |
| 428 | 205 } |
| 206 | |
| 207 #ifdef TIOCLINUX | |
| 208 static Lisp_Object | |
| 2286 | 209 tty_get_foreign_selection (Lisp_Object UNUSED (selection_symbol), |
| 210 Lisp_Object UNUSED (target_type)) | |
| 428 | 211 { |
| 793 | 212 /* This function can GC */ |
| 213 struct device *d = decode_device (Qnil); | |
| 214 int fd = DEVICE_INFD (d); | |
| 215 char c = 3; | |
| 216 Lisp_Object output_stream = Qnil; | |
| 217 Lisp_Object terminal_stream = Qnil; | |
| 218 Lisp_Object output_string = Qnil; | |
| 219 struct gcpro gcpro1,gcpro2,gcpro3; | |
| 220 | |
| 221 GCPRO3(output_stream,terminal_stream,output_string); | |
| 428 | 222 |
| 793 | 223 /* The ioctl() to paste actually puts things in the input queue of |
| 224 ** the virtual console, so we need to trap that data, since we are | |
| 225 ** supposed to return the actual string selection from this | |
| 226 ** function. | |
| 227 */ | |
| 428 | 228 |
| 793 | 229 /* I really hate doing this, but it doesn't seem to cause any |
| 230 ** problems, and it makes the Lstream_read stuff further down | |
| 231 ** error out correctly instead of trying to indefinitely read from | |
| 232 ** the console. | |
| 233 ** | |
| 234 ** There is no set_descriptor_blocking() function call, but in my | |
| 235 ** testing under linux, it has not proved fatal to leave the | |
| 236 ** descriptor in non-blocking mode. | |
| 237 ** | |
| 238 ** William Perry Nov 5, 1999 | |
| 239 */ | |
| 240 set_descriptor_non_blocking (fd); | |
| 428 | 241 |
| 793 | 242 /* We need two streams, one for reading from the selected device, |
| 243 ** and one to write the data into. There is no writable version | |
| 244 ** of the lisp-string lstream, so we make do with a resizing | |
| 245 ** buffer stream, and make a string out of it after we are | |
| 246 ** done. | |
| 247 */ | |
| 248 output_stream = make_resizing_buffer_output_stream (); | |
| 249 terminal_stream = make_filedesc_input_stream (fd, 0, -1, LSTR_BLOCKED_OK); | |
| 250 output_string = Qnil; | |
| 251 | |
| 252 /* #### We should arguably use a specbind() and an unwind routine here, | |
| 253 ** #### but I don't care that much right now. | |
| 254 */ | |
| 255 if (NILP (output_stream) || NILP (terminal_stream)) | |
| 256 /* Should we signal an error here? */ | |
| 257 goto out; | |
| 428 | 258 |
| 793 | 259 if (ioctl (fd, TIOCLINUX, &c) < 0) |
| 260 { | |
| 261 /* Could not get the selection - eek */ | |
| 262 UNGCPRO; | |
| 263 return (Qnil); | |
| 264 } | |
| 428 | 265 |
| 793 | 266 while (1) |
| 267 { | |
| 867 | 268 Ibyte tempbuf[1024]; /* some random amount */ |
| 793 | 269 Bytecount i; |
| 270 Bytecount size_in_bytes = | |
| 271 Lstream_read (XLSTREAM (terminal_stream), | |
| 272 tempbuf, sizeof (tempbuf)); | |
| 273 | |
| 274 if (size_in_bytes <= 0) | |
| 275 /* end of the stream */ | |
| 276 break; | |
| 277 | |
| 278 /* convert CR->LF */ | |
| 279 for (i = 0; i < size_in_bytes; i++) | |
| 428 | 280 { |
| 793 | 281 if (tempbuf[i] == '\r') |
| 282 tempbuf[i] = '\n'; | |
| 428 | 283 } |
| 284 | |
| 793 | 285 Lstream_write (XLSTREAM (output_stream), tempbuf, size_in_bytes); |
| 286 } | |
| 428 | 287 |
| 793 | 288 Lstream_flush (XLSTREAM (output_stream)); |
| 428 | 289 |
| 793 | 290 output_string = |
| 291 make_string (resizing_buffer_stream_ptr (XLSTREAM (output_stream)), | |
| 292 Lstream_byte_count (XLSTREAM (output_stream))); | |
| 428 | 293 |
| 793 | 294 Lstream_delete (XLSTREAM (output_stream)); |
| 295 Lstream_delete (XLSTREAM (terminal_stream)); | |
| 428 | 296 |
| 297 out: | |
| 793 | 298 UNGCPRO; |
| 299 return (output_string); | |
| 428 | 300 } |
| 301 | |
| 302 static Lisp_Object | |
| 2286 | 303 tty_selection_exists_p (Lisp_Object UNUSED (selection), |
| 304 Lisp_Object UNUSED (selection_type)) | |
| 428 | 305 { |
| 793 | 306 return (Qt); |
| 428 | 307 } |
| 308 #endif /* TIOCLINUX */ | |
| 309 | |
| 310 #if 0 | |
| 311 static Lisp_Object | |
| 442 | 312 tty_own_selection (Lisp_Object selection_name, Lisp_Object selection_value, |
| 313 Lisp_Object how_to_add, Lisp_Object selection_type) | |
| 428 | 314 { |
| 793 | 315 /* There is no way to do this cleanly - the GPM selection |
| 316 ** 'protocol' (actually the TIOCLINUX ioctl) requires a start and | |
| 317 ** end position on the _screen_, not a string to stick in there. | |
| 318 ** Lame. | |
| 319 ** | |
| 320 ** William Perry Nov 4, 1999 | |
| 321 */ | |
| 428 | 322 } |
| 323 #endif | |
| 324 | |
| 325 /* This function appears to work once in a blue moon. I'm not sure | |
| 793 | 326 ** exactly why either. *sigh* |
| 327 ** | |
| 328 ** William Perry Nov 4, 1999 | |
| 329 ** | |
| 330 ** Apparently, this is the way (mouse-position) is supposed to work, | |
| 331 ** and I was just expecting something else. (mouse-pixel-position) | |
| 332 ** works just fine. | |
| 333 ** | |
| 334 ** William Perry Nov 7, 1999 | |
| 335 */ | |
| 428 | 336 static int |
| 337 tty_get_mouse_position (struct device *d, Lisp_Object *frame, int *x, int *y) | |
| 338 { | |
| 793 | 339 Gpm_Event ev; |
| 340 int num_buttons; | |
| 428 | 341 |
| 793 | 342 memset(&ev,'\0',sizeof(ev)); |
| 428 | 343 |
| 793 | 344 num_buttons = Gpm_GetSnapshot(&ev); |
| 428 | 345 |
| 793 | 346 if (!num_buttons) |
| 347 /* This means there are events pending... */ | |
| 428 | 348 |
| 793 | 349 /* #### In theory, we should drain the events pending, stick |
| 350 ** #### them in the queue, and return the mouse position | |
| 351 ** #### anyway. | |
| 352 */ | |
| 353 return (-1); | |
| 354 *x = ev.x; | |
| 355 *y = ev.y; | |
| 356 *frame = DEVICE_SELECTED_FRAME (d); | |
| 357 return (1); | |
| 428 | 358 } |
| 359 | |
| 360 static void | |
| 2286 | 361 tty_set_mouse_position (struct window *UNUSED (w), int UNUSED (x), |
| 362 int UNUSED (y)) | |
| 428 | 363 { |
| 793 | 364 /* |
| 365 #### I couldn't find any GPM functions that set the mouse position. | |
| 366 #### Mr. Perry had left this function empty; that must be why. | |
| 367 #### karlheg | |
| 368 */ | |
| 428 | 369 } |
| 370 | |
| 371 static int gpm_event_pending_p (int user_p) | |
| 372 { | |
| 793 | 373 Lisp_Object event; |
| 428 | 374 |
| 793 | 375 EVENT_CHAIN_LOOP (event, gpm_event_queue) |
| 376 { | |
| 377 if (!user_p || command_event_p (event)) | |
| 378 return (1); | |
| 379 } | |
| 380 return (orig_event_pending_p (user_p)); | |
| 428 | 381 } |
| 382 | |
| 440 | 383 static void gpm_next_event_cb (Lisp_Event *event) |
| 428 | 384 { |
| 793 | 385 /* #### It would be nice to preserve some sort of ordering of the |
| 386 ** #### different types of events, but that would be quite a bit | |
| 387 ** #### of work, and would more than likely break the abstraction | |
| 388 ** #### between the other event loops and this one. | |
| 389 */ | |
| 440 | 390 |
| 793 | 391 if (!NILP (gpm_event_queue)) |
| 392 { | |
| 393 Lisp_Object queued_event = | |
| 394 dequeue_event (&gpm_event_queue, &gpm_event_queue_tail); | |
| 395 *event = *(XEVENT (queued_event)); | |
| 396 | |
| 397 if (event->event_type == pointer_motion_event) | |
| 428 | 398 { |
| 793 | 399 struct device *d = decode_device (event->channel); |
| 400 int fd = DEVICE_INFD (d); | |
| 428 | 401 |
| 793 | 402 /* Ok, now this is just freaky. Bear with me though. |
| 403 ** | |
| 404 ** If you run gnuclient and attach to a XEmacs running in | |
| 405 ** X or on another TTY, the mouse cursor does not get | |
| 406 ** drawn correctly. This is because the ioctl() fails | |
| 407 ** with EPERM because the TTY specified is not our | |
| 408 ** controlling terminal. If you are the superuser, it | |
| 409 ** will work just spiffy. The appropriate source file (at | |
| 410 ** least in linux 2.2.x) is | |
| 411 ** .../linux/drivers/char/console.c in the function | |
| 412 ** tioclinux(). The following bit of code is brutal to | |
| 413 ** us: | |
| 414 ** | |
| 415 ** if (current->tty != tty && !suser()) | |
| 416 ** return -EPERM; | |
| 417 ** | |
| 418 ** I even tried setting us as a process leader, removing | |
| 419 ** our controlling terminal, and then using the TIOCSCTTY | |
| 420 ** to set up a new controlling terminal, all with no luck. | |
| 421 ** | |
| 422 ** What is even weirder is if you run XEmacs in a VC, and | |
| 423 ** attach to it from another VC with gnuclient, go back to | |
| 424 ** the original VC and hit a key, the mouse pointer | |
| 425 ** displays (in BOTH VCs), until you hit a key in the | |
| 426 ** second VC, after which it does not display in EITHER | |
| 427 ** VC. Bizarre, no? | |
| 428 ** | |
| 429 ** All I can say is thank god Linux comes with source code | |
| 430 ** or I would have been completely confused. Well, ok, | |
| 431 ** I'm still completely confused. I don't see why they | |
| 432 ** don't just check the permissions on the device | |
| 433 ** (actually, if you have enough access to it to get the | |
| 434 ** console's file descriptor, you should be able to do | |
| 435 ** with it as you wish, but maybe that is just me). | |
| 436 ** | |
| 437 ** William M. Perry - Nov 9, 1999 | |
| 438 */ | |
| 428 | 439 |
| 1204 | 440 Gpm_DrawPointer (EVENT_MOTION_X (event),EVENT_MOTION_Y (event), fd); |
| 428 | 441 } |
| 442 | |
| 793 | 443 return; |
| 444 } | |
| 445 | |
| 446 orig_next_event_cb (event); | |
| 428 | 447 } |
| 448 | |
| 449 static void hook_event_callbacks_once (void) | |
| 450 { | |
| 793 | 451 static int hooker; |
| 428 | 452 |
| 793 | 453 if (!hooker) |
| 454 { | |
| 455 orig_event_pending_p = event_stream->event_pending_p; | |
| 456 orig_next_event_cb = event_stream->next_event_cb; | |
| 457 event_stream->event_pending_p = gpm_event_pending_p; | |
| 458 event_stream->next_event_cb = gpm_next_event_cb; | |
| 459 hooker = 1; | |
| 460 } | |
| 428 | 461 } |
| 462 | |
| 463 static void hook_console_methods_once (void) | |
| 464 { | |
| 793 | 465 static int hooker; |
| 428 | 466 |
| 793 | 467 if (!hooker) |
| 468 { | |
| 469 /* Install the mouse position methods for the TTY console type */ | |
| 470 CONSOLE_HAS_METHOD (tty, get_mouse_position); | |
| 471 CONSOLE_HAS_METHOD (tty, set_mouse_position); | |
| 472 CONSOLE_HAS_METHOD (tty, get_foreign_selection); | |
| 473 CONSOLE_HAS_METHOD (tty, selection_exists_p); | |
| 428 | 474 #if 0 |
| 793 | 475 CONSOLE_HAS_METHOD (tty, own_selection); |
| 428 | 476 #endif |
| 793 | 477 } |
| 428 | 478 } |
| 479 | |
| 480 DEFUN ("gpm-enabled-p", Fgpm_enabled_p, 0, 1, 0, /* | |
| 481 Return non-nil if GPM mouse support is currently enabled on DEVICE. | |
| 482 */ | |
| 793 | 483 (device)) |
| 428 | 484 { |
| 793 | 485 char *console_name = ttyname (DEVICE_INFD (decode_device (device))); |
| 486 char process_name[1024]; | |
| 487 Lisp_Object proc; | |
| 428 | 488 |
| 793 | 489 if (!console_name) |
| 490 return (Qnil); | |
| 428 | 491 |
| 793 | 492 memset (process_name, '\0', sizeof(process_name)); |
| 493 snprintf (process_name, sizeof(process_name) - 1, "gpm for %s", | |
| 494 console_name); | |
| 428 | 495 |
|
4953
304aebb79cd3
function renamings to track names of char typedefs
Ben Wing <ben@xemacs.org>
parents:
3025
diff
changeset
|
496 proc = Fget_process (build_cistring (process_name)); |
| 428 | 497 |
| 793 | 498 if (NILP (proc)) |
| 499 return (Qnil); | |
| 428 | 500 |
| 793 | 501 if (1) /* (PROCESS_LIVE_P (proc)) */ |
| 502 return (Qt); | |
| 503 return (Qnil); | |
| 428 | 504 } |
| 505 | |
| 506 DEFUN ("gpm-enable", Fgpm_enable, 0, 2, 0, /* | |
| 507 Toggle accepting of GPM mouse events. | |
| 508 */ | |
| 793 | 509 (device, arg)) |
| 428 | 510 { |
| 793 | 511 Gpm_Connect conn; |
| 512 int rval; | |
| 513 Lisp_Object gpm_process; | |
| 514 Lisp_Object gpm_filter; | |
| 515 struct device *d = decode_device (device); | |
| 516 int fd = DEVICE_INFD (d); | |
| 517 char *console_name = ttyname (fd); | |
| 518 char process_name[1024]; | |
| 428 | 519 |
| 793 | 520 hook_event_callbacks_once (); |
| 521 hook_console_methods_once (); | |
| 522 | |
| 523 if (noninteractive) | |
| 524 invalid_operation ("Can't connect to GPM in batch mode", Qunbound); | |
| 428 | 525 |
| 793 | 526 if (!console_name) |
| 527 /* Something seriously wrong here... */ | |
| 528 return (Qnil); | |
| 529 | |
| 530 memset (process_name, '\0', sizeof(process_name)); | |
| 531 snprintf (process_name, sizeof(process_name) - 1, "gpm for %s", | |
| 532 console_name); | |
| 428 | 533 |
| 793 | 534 if (NILP (arg)) |
| 535 { | |
| 536 turn_off_gpm (process_name); | |
| 537 return (Qnil); | |
| 538 } | |
| 428 | 539 |
| 793 | 540 /* DANGER DANGER. |
| 541 ** Though shalt not call (gpm-enable t) after we have already | |
| 542 ** started, or stuff blows up. | |
| 543 */ | |
| 544 if (!NILP (Fgpm_enabled_p (device))) | |
| 545 invalid_operation ("GPM already enabled for this console", Qunbound); | |
| 428 | 546 |
| 793 | 547 conn.eventMask = GPM_DOWN|GPM_UP|GPM_MOVE|GPM_DRAG; |
| 548 conn.defaultMask = GPM_MOVE; | |
| 549 conn.minMod = 0; | |
| 550 conn.maxMod = ((1 << KG_SHIFT) | (1 << KG_ALT) | (1 << KG_CTRL)); | |
| 428 | 551 |
| 793 | 552 /* Reset some silly static variables so that multiple Gpm_Open() |
| 553 ** calls have even a slight chance of working | |
| 554 */ | |
| 555 gpm_tried = 0; | |
| 556 gpm_flag = 0; | |
| 557 gpm_stack = NULL; | |
| 428 | 558 |
| 793 | 559 /* Make sure Gpm_Open() does ioctl() on the correct |
| 560 ** descriptor, or it can get the wrong terminal sizes, etc. | |
| 561 */ | |
| 562 gpm_consolefd = fd; | |
| 440 | 563 |
| 793 | 564 /* We have to pass the virtual console manually, otherwise if you |
| 3025 | 565 ** use `gnuclient -nw' to connect to an XEmacs that is running in |
| 793 | 566 ** X, Gpm_Open() tries to use ttyname(0 | 1 | 2) to find out which |
| 567 ** console you are using, which is of course not correct for the | |
| 568 ** new tty device. | |
| 569 */ | |
| 570 if (strncmp (console_name, "/dev/tty", 8) || !isdigit (console_name[8])) | |
| 571 /* Urk, something really wrong */ | |
| 572 return (Qnil); | |
| 428 | 573 |
| 793 | 574 rval = Gpm_Open (&conn, atoi (console_name + 8)); |
| 428 | 575 |
| 793 | 576 switch (rval) |
| 577 { | |
| 578 case -1: /* General failure */ | |
| 579 break; | |
| 580 case -2: /* We are running under an XTerm */ | |
| 581 Gpm_Close(); | |
| 582 break; | |
| 583 default: | |
| 584 /* Is this really necessary? */ | |
| 585 set_descriptor_non_blocking (gpm_fd); | |
| 586 store_gpm_state (gpm_fd); | |
| 587 gpm_process = | |
|
4953
304aebb79cd3
function renamings to track names of char typedefs
Ben Wing <ben@xemacs.org>
parents:
3025
diff
changeset
|
588 connect_to_file_descriptor (build_cistring (process_name), Qnil, |
| 793 | 589 make_int (gpm_fd), |
| 590 make_int (gpm_fd)); | |
| 428 | 591 |
| 793 | 592 if (!NILP (gpm_process)) |
| 593 { | |
| 594 rval = 0; | |
| 595 Fprocess_kill_without_query (gpm_process, Qnil); | |
| 2834 | 596 gpm_filter = GET_DEFUN_LISP_OBJECT (Freceive_gpm_event); |
| 853 | 597 set_process_filter (gpm_process, gpm_filter, 1, 0); |
| 428 | 598 |
| 793 | 599 /* Keep track of the device for later */ |
| 600 /* Fput (gpm_process, intern ("gpm-device"), device); */ | |
| 428 | 601 } |
| 793 | 602 else |
| 603 { | |
| 604 Gpm_Close (); | |
| 605 rval = -1; | |
| 606 } | |
| 607 } | |
| 428 | 608 |
| 793 | 609 return (rval ? Qnil : Qt); |
| 428 | 610 } |
| 611 | |
| 612 void vars_of_gpmevent (void) | |
| 613 { | |
| 793 | 614 gpm_event_queue = Qnil; |
| 615 gpm_event_queue_tail = Qnil; | |
| 616 staticpro (&gpm_event_queue); | |
| 617 staticpro (&gpm_event_queue_tail); | |
| 1204 | 618 dump_add_root_lisp_object (&gpm_event_queue); |
| 619 dump_add_root_lisp_object (&gpm_event_queue_tail); | |
| 428 | 620 } |
| 621 | |
| 622 void syms_of_gpmevent (void) | |
| 623 { | |
| 793 | 624 DEFSUBR (Freceive_gpm_event); |
| 625 DEFSUBR (Fgpm_enable); | |
| 626 DEFSUBR (Fgpm_enabled_p); | |
| 428 | 627 } |
| 628 | |
| 629 #endif /* HAVE_GPM */ |