1 /* The event_stream interface for X11 with Xt, and/or tty frames.
2 Copyright (C) 1991-5, 1997 Free Software Foundation, Inc.
3 Copyright (C) 1995 Sun Microsystems, Inc.
4 Copyright (C) 1996 Ben Wing.
6 This file is part of XEmacs.
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
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
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. */
23 /* Synched up with: Not in FSF. */
28 #include "console-x.h"
29 #include "../lwlib/lwlib.h"
30 #include "EmacsFrame.h"
32 #include "blocktype.h"
35 #include "console-tty.h"
38 #include "objects-x.h"
40 #include "redisplay.h"
44 #include "sysproc.h" /* for MAXDESC */
46 #include "xintrinsicp.h" /* CoreP.h needs this */
47 #include <X11/CoreP.h> /* Numerous places access the fields of
48 a core widget directly. We could
49 use XtGetValues(), but ... */
50 #include <X11/ShellP.h>
57 #include "file-coding.h"
64 #if defined (HAVE_OFFIX_DND)
69 /* Hmm, under unix we want X modifiers, under NT we want X modifiers if
70 we are running X and Windows modifiers otherwise.
71 gak. This is a kludge until we support multiple native GUIs!
78 #include "events-mod.h"
80 static void enqueue_Xt_dispatch_event (Lisp_Object event);
81 static void handle_focus_event_1 (struct frame *f, int in_p);
83 static struct event_stream *Xt_event_stream;
85 /* With the new event model, all events go through XtDispatchEvent()
86 and are picked up by an event handler that is added to each frame
87 widget. (This is how it's supposed to be.) In the old method,
88 Emacs sucks out events directly from XtNextEvent() and only
89 dispatches the events that it doesn't need to deal with. This
90 old way has lots of corresponding junk that is no longer
91 necessary: lwlib extensions, synthetic XAnyEvents, unnecessary
94 /* The one and only one application context that Emacs uses. */
95 XtAppContext Xt_app_con;
97 /* Do we accept events sent by other clients? */
98 int x_allow_sendevents;
100 int modifier_keys_are_sticky;
106 static int process_events_occurred;
107 static int tty_events_occurred;
109 /* Mask of bits indicating the descriptors that we wait for input on */
110 extern SELECT_TYPE input_wait_mask, process_only_mask, tty_only_mask;
112 static CONST String x_fallback_resources[] =
114 /* This file is automatically generated from the app-defaults file
115 in ../etc/Emacs.ad. These resources are consulted only if no
116 app-defaults file is found at all.
118 #include <Emacs.ad.h>
122 static Lisp_Object x_keysym_to_emacs_keysym (KeySym keysym, int simple_p);
123 void emacs_Xt_mapping_action (Widget w, XEvent *event);
124 void debug_process_finalization (struct Lisp_Process *p);
125 void emacs_Xt_event_handler (Widget wid, XtPointer closure, XEvent *event,
126 Boolean *continue_to_dispatch);
128 static int last_quit_check_signal_tick_count;
130 Lisp_Object Qkey_mapping;
131 Lisp_Object Qsans_modifiers;
134 /************************************************************************/
135 /* keymap handling */
136 /************************************************************************/
138 /* X bogusly doesn't define the interpretations of any bits besides
139 ModControl, ModShift, and ModLock; so the Interclient Communication
140 Conventions Manual says that we have to bend over backwards to figure
141 out what the other modifier bits mean. According to ICCCM:
143 - Any keycode which is assigned ModControl is a "control" key.
145 - Any modifier bit which is assigned to a keycode which generates Meta_L
146 or Meta_R is the modifier bit meaning "meta". Likewise for Super, Hyper,
149 - Any keypress event which contains ModControl in its state should be
150 interpreted as a "control" character.
152 - Any keypress event which contains a modifier bit in its state which is
153 generated by a keycode whose corresponding keysym is Meta_L or Meta_R
154 should be interpreted as a "meta" character. Likewise for Super, Hyper,
157 - It is illegal for a keysym to be associated with more than one modifier
160 This means that the only thing that emacs can reasonably interpret as a
161 "meta" key is a key whose keysym is Meta_L or Meta_R, and which generates
162 one of the modifier bits Mod1-Mod5.
164 Unfortunately, many keyboards don't have Meta keys in their default
165 configuration. So, if there are no Meta keys, but there are "Alt" keys,
166 emacs will interpret Alt as Meta. If there are both Meta and Alt keys,
167 then the Meta keys mean "Meta", and the Alt keys mean "Alt" (it used to
168 mean "Symbol," but that just confused the hell out of way too many people).
170 This works with the default configurations of the 19 keyboard-types I've
173 Emacs detects keyboard configurations which violate the above rules, and
174 prints an error message on the standard-error-output. (Perhaps it should
175 use a pop-up-window instead.)
179 x_reset_key_mapping (struct device *d)
181 Display *display = DEVICE_X_DISPLAY (d);
182 struct x_device *xd = DEVICE_X_DATA (d);
183 KeySym *keysym, *keysym_end;
184 Lisp_Object hash_table;
185 int key_code_count, keysyms_per_code;
187 if (xd->x_keysym_map)
188 XFree ((char *) xd->x_keysym_map);
189 XDisplayKeycodes (display,
190 &xd->x_keysym_map_min_code,
191 &xd->x_keysym_map_max_code);
192 key_code_count = xd->x_keysym_map_max_code - xd->x_keysym_map_min_code + 1;
194 XGetKeyboardMapping (display, xd->x_keysym_map_min_code, key_code_count,
195 &xd->x_keysym_map_keysyms_per_code);
197 hash_table = xd->x_keysym_map_hash_table;
198 if (HASH_TABLEP (hash_table))
199 Fclrhash (hash_table);
201 xd->x_keysym_map_hash_table = hash_table =
202 make_lisp_hash_table (128, HASH_TABLE_NON_WEAK, HASH_TABLE_EQUAL);
204 for (keysym = xd->x_keysym_map,
205 keysyms_per_code = xd->x_keysym_map_keysyms_per_code,
206 keysym_end = keysym + (key_code_count * keysyms_per_code);
208 keysym += keysyms_per_code)
212 if (keysym[0] == NoSymbol)
216 char *name = XKeysymToString (keysym[0]);
217 Lisp_Object sym = x_keysym_to_emacs_keysym (keysym[0], 0);
220 Fputhash (build_string (name), Qsans_modifiers, hash_table);
221 Fputhash (sym, Qsans_modifiers, hash_table);
225 for (j = 1; j < keysyms_per_code; j++)
227 if (keysym[j] != keysym[0] &&
228 keysym[j] != NoSymbol)
230 char *name = XKeysymToString (keysym[j]);
231 Lisp_Object sym = x_keysym_to_emacs_keysym (keysym[j], 0);
232 if (name && NILP (Fgethash (sym, hash_table, Qnil)))
234 Fputhash (build_string (name), Qt, hash_table);
235 Fputhash (sym, Qt, hash_table);
243 index_to_name (int indice)
247 case ShiftMapIndex: return "ModShift";
248 case LockMapIndex: return "ModLock";
249 case ControlMapIndex: return "ModControl";
250 case Mod1MapIndex: return "Mod1";
251 case Mod2MapIndex: return "Mod2";
252 case Mod3MapIndex: return "Mod3";
253 case Mod4MapIndex: return "Mod4";
254 case Mod5MapIndex: return "Mod5";
255 default: return "???";
259 /* Boy, I really wish C had local functions... */
260 struct c_doesnt_have_closures /* #### not yet used */
262 int warned_about_overlapping_modifiers;
263 int warned_about_predefined_modifiers;
264 int warned_about_duplicate_modifiers;
273 x_reset_modifier_mapping (struct device *d)
275 Display *display = DEVICE_X_DISPLAY (d);
276 struct x_device *xd = DEVICE_X_DATA (d);
277 int modifier_index, modifier_key, column, mkpm;
278 int warned_about_overlapping_modifiers = 0;
279 int warned_about_predefined_modifiers = 0;
280 int warned_about_duplicate_modifiers = 0;
287 xd->lock_interpretation = 0;
289 if (xd->x_modifier_keymap)
290 XFreeModifiermap (xd->x_modifier_keymap);
292 x_reset_key_mapping (d);
294 xd->x_modifier_keymap = XGetModifierMapping (display);
296 /* Boy, I really wish C had local functions...
299 /* The call to warn_when_safe must be on the same line as the string or
300 make-msgfile won't pick it up properly (the newline doesn't confuse
301 it, but the backslash does). */
303 #define modwarn(name,old,other) \
304 warn_when_safe (Qkey_mapping, Qwarning, "XEmacs: %s (0x%x) generates %s, which is generated by %s.", \
305 name, code, index_to_name (old), other), \
306 warned_about_overlapping_modifiers = 1
308 #define modbarf(name,other) \
309 warn_when_safe (Qkey_mapping, Qwarning, "XEmacs: %s (0x%x) generates %s, which is nonsensical.", \
310 name, code, other), \
311 warned_about_predefined_modifiers = 1
313 #define check_modifier(name,mask) \
314 if ((1<<modifier_index) != mask) \
315 warn_when_safe (Qkey_mapping, Qwarning, "XEmacs: %s (0x%x) generates %s, which is nonsensical.", \
316 name, code, index_to_name (modifier_index)), \
317 warned_about_predefined_modifiers = 1
319 #define store_modifier(name,old) \
320 if (old && old != modifier_index) \
321 warn_when_safe (Qkey_mapping, Qwarning, "XEmacs: %s (0x%x) generates both %s and %s, which is nonsensical.",\
322 name, code, index_to_name (old), \
323 index_to_name (modifier_index)), \
324 warned_about_duplicate_modifiers = 1; \
325 if (modifier_index == ShiftMapIndex) modbarf (name,"ModShift"); \
326 else if (modifier_index == LockMapIndex) modbarf (name,"ModLock"); \
327 else if (modifier_index == ControlMapIndex) modbarf (name,"ModControl"); \
328 else if (sym == XK_Mode_switch) \
329 mode_bit = modifier_index; /* Mode_switch is special, see below... */ \
330 else if (modifier_index == meta_bit && old != meta_bit) \
331 modwarn (name, meta_bit, "Meta"); \
332 else if (modifier_index == super_bit && old != super_bit) \
333 modwarn (name, super_bit, "Super"); \
334 else if (modifier_index == hyper_bit && old != hyper_bit) \
335 modwarn (name, hyper_bit, "Hyper"); \
336 else if (modifier_index == alt_bit && old != alt_bit) \
337 modwarn (name, alt_bit, "Alt"); \
339 old = modifier_index;
341 mkpm = xd->x_modifier_keymap->max_keypermod;
342 for (modifier_index = 0; modifier_index < 8; modifier_index++)
343 for (modifier_key = 0; modifier_key < mkpm; modifier_key++) {
345 for (column = 0; column < 4; column += 2) {
346 KeyCode code = xd->x_modifier_keymap->modifiermap[modifier_index * mkpm
348 KeySym sym = (code ? XKeycodeToKeysym (display, code, column) : 0);
349 if (sym == last_sym) continue;
352 case XK_Mode_switch:store_modifier ("Mode_switch", mode_bit); break;
353 case XK_Meta_L: store_modifier ("Meta_L", meta_bit); break;
354 case XK_Meta_R: store_modifier ("Meta_R", meta_bit); break;
355 case XK_Super_L: store_modifier ("Super_L", super_bit); break;
356 case XK_Super_R: store_modifier ("Super_R", super_bit); break;
357 case XK_Hyper_L: store_modifier ("Hyper_L", hyper_bit); break;
358 case XK_Hyper_R: store_modifier ("Hyper_R", hyper_bit); break;
359 case XK_Alt_L: store_modifier ("Alt_L", alt_bit); break;
360 case XK_Alt_R: store_modifier ("Alt_R", alt_bit); break;
361 case XK_Control_L: check_modifier ("Control_L", ControlMask); break;
362 case XK_Control_R: check_modifier ("Control_R", ControlMask); break;
363 case XK_Shift_L: check_modifier ("Shift_L", ShiftMask); break;
364 case XK_Shift_R: check_modifier ("Shift_R", ShiftMask); break;
365 case XK_Shift_Lock: check_modifier ("Shift_Lock", LockMask);
366 xd->lock_interpretation = XK_Shift_Lock; break;
367 case XK_Caps_Lock: check_modifier ("Caps_Lock", LockMask);
368 xd->lock_interpretation = XK_Caps_Lock; break;
370 /* It probably doesn't make any sense for a modifier bit to be
371 assigned to a key that is not one of the above, but OpenWindows
372 assigns modifier bits to a couple of random function keys for
373 no reason that I can discern, so printing a warning here would
378 #undef store_modifier
379 #undef check_modifier
383 /* If there was no Meta key, then try using the Alt key instead.
384 If there is both a Meta key and an Alt key, then the Alt key
385 is not disturbed and remains an Alt key. */
386 if (! meta_bit && alt_bit)
387 meta_bit = alt_bit, alt_bit = 0;
389 /* mode_bit overrides everything, since it's processed down inside of
390 XLookupString() instead of by us. If Meta and Mode_switch both
391 generate the same modifier bit (which is an error), then we don't
392 interpret that bit as Meta, because we can't make XLookupString()
393 not interpret it as Mode_switch; and interpreting it as both would
397 CONST char *warn = 0;
398 if (mode_bit == meta_bit) warn = "Meta", meta_bit = 0;
399 else if (mode_bit == hyper_bit) warn = "Hyper", hyper_bit = 0;
400 else if (mode_bit == super_bit) warn = "Super", super_bit = 0;
401 else if (mode_bit == alt_bit) warn = "Alt", alt_bit = 0;
405 (Qkey_mapping, Qwarning,
406 "XEmacs: %s is being used for both Mode_switch and %s.",
407 index_to_name (mode_bit), warn),
408 warned_about_overlapping_modifiers = 1;
413 xd->MetaMask = (meta_bit ? (1 << meta_bit) : 0);
414 xd->HyperMask = (hyper_bit ? (1 << hyper_bit) : 0);
415 xd->SuperMask = (super_bit ? (1 << super_bit) : 0);
416 xd->AltMask = (alt_bit ? (1 << alt_bit) : 0);
417 xd->ModeMask = (mode_bit ? (1 << mode_bit) : 0); /* unused */
420 if (warned_about_overlapping_modifiers)
421 warn_when_safe (Qkey_mapping, Qwarning, "\n"
422 " Two distinct modifier keys (such as Meta and Hyper) cannot generate\n"
423 " the same modifier bit, because Emacs won't be able to tell which\n"
424 " modifier was actually held down when some other key is pressed. It\n"
425 " won't be able to tell Meta-x and Hyper-x apart, for example. Change\n"
426 " one of these keys to use some other modifier bit. If you intend for\n"
427 " these keys to have the same behavior, then change them to have the\n"
428 " same keysym as well as the same modifier bit.");
430 if (warned_about_predefined_modifiers)
431 warn_when_safe (Qkey_mapping, Qwarning, "\n"
432 " The semantics of the modifier bits ModShift, ModLock, and ModControl\n"
433 " are predefined. It does not make sense to assign ModControl to any\n"
434 " keysym other than Control_L or Control_R, or to assign any modifier\n"
435 " bits to the \"control\" keysyms other than ModControl. You can't\n"
436 " turn a \"control\" key into a \"meta\" key (or vice versa) by simply\n"
437 " assigning the key a different modifier bit. You must also make that\n"
438 " key generate an appropriate keysym (Control_L, Meta_L, etc).");
440 /* No need to say anything more for warned_about_duplicate_modifiers. */
442 if (warned_about_overlapping_modifiers || warned_about_predefined_modifiers)
443 warn_when_safe (Qkey_mapping, Qwarning, "\n"
444 " The meanings of the modifier bits Mod1 through Mod5 are determined\n"
445 " by the keysyms used to control those bits. Mod1 does NOT always\n"
446 " mean Meta, although some non-ICCCM-compliant programs assume that.");
450 x_init_modifier_mapping (struct device *d)
452 struct x_device *xd = DEVICE_X_DATA (d);
453 xd->x_keysym_map_hash_table = Qnil;
454 xd->x_keysym_map = NULL;
455 xd->x_modifier_keymap = NULL;
456 x_reset_modifier_mapping (d);
460 x_key_is_modifier_p (KeyCode keycode, struct device *d)
462 struct x_device *xd = DEVICE_X_DATA (d);
466 if (keycode < xd->x_keysym_map_min_code ||
467 keycode > xd->x_keysym_map_max_code)
470 syms = &xd->x_keysym_map [(keycode - xd->x_keysym_map_min_code) *
471 xd->x_keysym_map_keysyms_per_code];
472 for (i = 0; i < xd->x_keysym_map_keysyms_per_code; i++)
473 if (IsModifierKey (syms [i]) ||
474 syms [i] == XK_Mode_switch) /* why doesn't IsModifierKey count this? */
479 /* key-handling code is always ugly. It just ends up working out
482 Here are some pointers:
484 -- DOWN_MASK indicates which modifiers should be treated as "down"
485 when the corresponding upstroke happens. It gets reset for
486 a particular modifier when that modifier goes up, and reset
487 for all modifiers when a non-modifier key is pressed. Example:
489 I press Control-A-Shift and then release Control-A-Shift.
490 I want the Shift key to be sticky but not the Control key.
492 -- LAST_DOWNKEY and RELEASE_TIME are used to keep track of
493 auto-repeat -- see below.
495 -- If a modifier key is sticky, I can unstick it by pressing
496 the modifier key again. */
499 x_handle_sticky_modifiers (XEvent *ev, struct device *d)
505 if (!modifier_keys_are_sticky) /* Optimize for non-sticky modifiers */
508 xd = DEVICE_X_DATA (d);
509 keycode = ev->xkey.keycode;
512 if (keycode < xd->x_keysym_map_min_code ||
513 keycode > xd->x_keysym_map_max_code)
516 if (! ((type == KeyPress || type == KeyRelease) &&
517 x_key_is_modifier_p (keycode, d)))
518 { /* Not a modifier key */
519 Bool key_event_p = (type == KeyPress || type == KeyRelease);
521 if (type == KeyPress && !xd->last_downkey)
522 xd->last_downkey = keycode;
523 else if (type == ButtonPress ||
524 (type == KeyPress && xd->last_downkey &&
525 (keycode != xd->last_downkey ||
526 ev->xkey.time != xd->release_time)))
528 xd->need_to_add_mask = 0;
529 xd->last_downkey = 0;
531 if (type == KeyPress)
532 xd->release_time = 0;
533 if (type == KeyPress || type == ButtonPress)
537 ev->xkey.state |= xd->need_to_add_mask;
539 ev->xbutton.state |= xd->need_to_add_mask;
541 if (type == KeyRelease && keycode == xd->last_downkey)
542 /* If I hold press-and-release the Control key and then press
543 and hold down the right arrow, I want it to auto-repeat
544 Control-Right. On the other hand, if I do the same but
545 manually press the Right arrow a bunch of times, I want
546 to see one Control-Right and then a bunch of Rights.
547 This means that we need to distinguish between an
548 auto-repeated key and a key pressed and released a bunch
551 Naturally, the designers of the X spec didn't see fit
552 to provide an obvious way to distinguish these cases.
553 So we assume that if the release and the next press
554 occur at the same time, the key was actually auto-
555 repeated. Under Open-Windows, at least, this works. */
556 xd->release_time = key_event_p ? ev->xkey.time : ev->xbutton.time;
558 else /* Modifier key pressed */
561 KeySym *syms = &xd->x_keysym_map [(keycode - xd->x_keysym_map_min_code) *
562 xd->x_keysym_map_keysyms_per_code];
564 /* If a non-modifier key was pressed in the middle of a bunch
565 of modifiers, then it unsticks all the modifiers that were
566 previously pressed. We cannot unstick the modifiers until
567 now because we want to check for auto-repeat of the
570 if (xd->last_downkey)
572 xd->last_downkey = 0;
573 xd->need_to_add_mask = 0;
578 if (type == KeyPress) \
580 /* If modifier key is already sticky, \
581 then unstick it. Note that we do \
582 not test down_mask to deal with the \
583 unlikely but possible case that the \
584 modifier key auto-repeats. */ \
585 if (xd->need_to_add_mask & mask) \
587 xd->need_to_add_mask &= ~mask; \
588 xd->down_mask &= ~mask; \
591 xd->down_mask |= mask; \
595 if (xd->down_mask & mask) \
597 xd->down_mask &= ~mask; \
598 xd->need_to_add_mask |= mask; \
603 for (i = 0; i < xd->x_keysym_map_keysyms_per_code; i++)
606 case XK_Control_L: case XK_Control_R: FROB (ControlMask); break;
607 case XK_Shift_L: case XK_Shift_R: FROB (ShiftMask); break;
608 case XK_Meta_L: case XK_Meta_R: FROB (xd->MetaMask); break;
609 case XK_Super_L: case XK_Super_R: FROB (xd->SuperMask); break;
610 case XK_Hyper_L: case XK_Hyper_R: FROB (xd->HyperMask); break;
611 case XK_Alt_L: case XK_Alt_R: FROB (xd->AltMask); break;
618 clear_sticky_modifiers (struct device *d)
620 struct x_device *xd = DEVICE_X_DATA (d);
622 xd->need_to_add_mask = 0;
623 xd->last_downkey = 0;
624 xd->release_time = 0;
629 keysym_obeys_caps_lock_p (KeySym sym, struct device *d)
631 struct x_device *xd = DEVICE_X_DATA (d);
632 /* Eeeeevil hack. Don't apply Caps_Lock to things that aren't alphabetic
633 characters, where "alphabetic" means something more than simply A-Z.
634 That is, if Caps_Lock is down, typing ESC doesn't produce Shift-ESC.
635 But if shift-lock is down, then it does. */
636 if (xd->lock_interpretation == XK_Shift_Lock)
640 ((sym >= XK_A) && (sym <= XK_Z)) ||
641 ((sym >= XK_a) && (sym <= XK_z)) ||
642 ((sym >= XK_Agrave) && (sym <= XK_Odiaeresis)) ||
643 ((sym >= XK_agrave) && (sym <= XK_odiaeresis)) ||
644 ((sym >= XK_Ooblique) && (sym <= XK_Thorn)) ||
645 ((sym >= XK_oslash) && (sym <= XK_thorn));
648 /* called from EmacsFrame.c (actually from Xt itself) when a
649 MappingNotify event is received. In its infinite wisdom, Xt
650 decided that Xt event handlers never get MappingNotify events.
651 O'Reilly Xt Programming Manual 9.1.2 says:
653 MappingNotify is automatically handled by Xt, so it isn't passed
654 to event handlers and you don't need to worry about it.
656 Of course, we DO worry about it, so we need a special translation. */
658 emacs_Xt_mapping_action (Widget w, XEvent* event)
660 struct device *d = get_device_from_display (event->xany.display);
662 if (DEVICE_X_BEING_DELETED (d))
665 /* nyet. Now this is handled by Xt. */
666 XRefreshKeyboardMapping (&event->xmapping);
668 /* xmodmap generates about a billion MappingKeyboard events, followed
669 by a single MappingModifier event, so it might be worthwhile to
670 take extra MappingKeyboard events out of the queue before requesting
671 the current keymap from the server. */
672 switch (event->xmapping.request)
674 case MappingKeyboard: x_reset_key_mapping (d); break;
675 case MappingModifier: x_reset_modifier_mapping (d); break;
676 case MappingPointer: /* Do something here? */ break;
682 /************************************************************************/
683 /* X to Emacs event conversion */
684 /************************************************************************/
687 x_keysym_to_emacs_keysym (KeySym keysym, int simple_p)
690 if (keysym >= XK_exclam && keysym <= XK_asciitilde)
691 /* We must assume that the X keysym numbers for the ASCII graphic
692 characters are the same as their ASCII codes. */
693 return make_char (keysym);
697 /* These would be handled correctly by the default case, but by
698 special-casing them here we don't garbage a string or call
700 case XK_BackSpace: return QKbackspace;
701 case XK_Tab: return QKtab;
702 case XK_Linefeed: return QKlinefeed;
703 case XK_Return: return QKreturn;
704 case XK_Escape: return QKescape;
705 case XK_space: return QKspace;
706 case XK_Delete: return QKdelete;
709 if (simple_p) return Qnil;
710 /* !!#### not Mule-ized */
711 name = XKeysymToString (keysym);
712 if (!name || !name[0])
713 /* This happens if there is a mismatch between the Xlib of
714 XEmacs and the Xlib of the X server...
716 Let's hard-code in some knowledge of common keysyms introduced
717 in recent X11 releases. Snarfed from X11/keysymdef.h
719 Probably we should add some stuff here for X11R6. */
722 case 0xFF95: return KEYSYM ("kp-home");
723 case 0xFF96: return KEYSYM ("kp-left");
724 case 0xFF97: return KEYSYM ("kp-up");
725 case 0xFF98: return KEYSYM ("kp-right");
726 case 0xFF99: return KEYSYM ("kp-down");
727 case 0xFF9A: return KEYSYM ("kp-prior");
728 case 0xFF9B: return KEYSYM ("kp-next");
729 case 0xFF9C: return KEYSYM ("kp-end");
730 case 0xFF9D: return KEYSYM ("kp-begin");
731 case 0xFF9E: return KEYSYM ("kp-insert");
732 case 0xFF9F: return KEYSYM ("kp-delete");
734 case 0x1005FF10: return KEYSYM ("SunF36"); /* labeled F11 */
735 case 0x1005FF11: return KEYSYM ("SunF37"); /* labeled F12 */
739 sprintf (buf, "unknown-keysym-0x%X", (int) keysym);
743 /* If it's got a one-character name, that's good enough. */
745 return make_char (name[0]);
747 /* If it's in the "Keyboard" character set, downcase it.
748 The case of those keysyms is too totally random for us to
749 force anyone to remember them.
750 The case of the other character sets is significant, however.
752 if ((((unsigned int) keysym) & (~0x1FF)) == ((unsigned int) 0xFE00))
756 for (s1 = name, s2 = buf; *s1; s1++, s2++) {
760 *s2 = tolower (* (unsigned char *) s1);
766 return KEYSYM (name);
771 x_to_emacs_keysym (XKeyPressedEvent *event, int simple_p)
772 /* simple_p means don't try too hard (ASCII only) */
779 char *bufptr = buffer;
780 int bufsiz = sizeof (buffer);
783 XIC xic = FRAME_X_XIC (x_any_window_to_frame
784 (get_device_from_display (event->display),
786 #endif /* XIM_XLIB */
787 #endif /* HAVE_XIM */
789 /* We use XLookupString if we're not using XIM, or are using
790 XIM_XLIB but input context creation failed. */
791 #if ! (defined (HAVE_XIM) && defined (XIM_MOTIF))
792 #if defined (HAVE_XIM) && defined (XIM_XLIB)
794 #endif /* XIM_XLIB */
796 /* Apparently it's necessary to specify a dummy here (rather
797 than passing in 0) to avoid crashes on German IRIX */
799 XLookupString (event, dummy, 200, &keysym, 0);
800 return (IsModifierKey (keysym) || keysym == XK_Mode_switch )
801 ? Qnil : x_keysym_to_emacs_keysym (keysym, simple_p);
803 #endif /* ! XIM_MOTIF */
806 Lookup_String: /* Come-From XBufferOverflow */
808 len = XmImMbLookupString (XtWindowToWidget (event->display, event->window),
809 event, bufptr, bufsiz, &keysym, &status);
811 len = XmbLookupString (xic, event, bufptr, bufsiz, &keysym, &status);
812 #endif /* HAVE_XIM */
815 if (x_debug_events > 0)
817 stderr_out (" status=");
818 #define print_status_when(S) if (status == S) stderr_out (#S)
819 print_status_when (XLookupKeySym);
820 print_status_when (XLookupBoth);
821 print_status_when (XLookupChars);
822 print_status_when (XLookupNone);
823 print_status_when (XBufferOverflow);
825 if (status == XLookupKeySym || status == XLookupBoth)
826 stderr_out (" keysym=%s", XKeysymToString (keysym));
827 if (status == XLookupChars || status == XLookupBoth)
832 stderr_out (" chars=\"");
833 for (j=0; j<len; j++)
834 stderr_out ("%c", bufptr[j]);
837 else if (bufptr[0] <= 32 || bufptr[0] >= 127)
838 stderr_out (" char=0x%x", bufptr[0]);
840 stderr_out (" char=%c", bufptr[0]);
844 #endif /* DEBUG_XEMACS */
850 return (IsModifierKey (keysym) || keysym == XK_Mode_switch )
851 ? Qnil : x_keysym_to_emacs_keysym (keysym, simple_p);
855 /* Generate multiple emacs events */
856 struct device *d = get_device_from_display (event->display);
858 Lisp_Object instream, fb_instream;
860 struct gcpro gcpro1, gcpro2;
863 make_fixed_buffer_input_stream ((unsigned char *) bufptr, len);
865 /* ### Use Fget_coding_system (Vcomposed_input_coding_system) */
867 make_decoding_input_stream (XLSTREAM (fb_instream),
868 Fget_coding_system (Qundecided));
870 istr = XLSTREAM (instream);
872 GCPRO2 (instream, fb_instream);
873 while ((ch = Lstream_get_emchar (istr)) != EOF)
875 Lisp_Object emacs_event = Fmake_event (Qnil, Qnil);
876 struct Lisp_Event *ev = XEVENT (emacs_event);
877 ev->channel = DEVICE_CONSOLE (d);
878 ev->event_type = key_press_event;
879 ev->timestamp = event->time;
880 ev->event.key.modifiers = 0;
881 ev->event.key.keysym = make_char (ch);
882 enqueue_Xt_dispatch_event (emacs_event);
884 Lstream_close (istr);
886 Lstream_delete (istr);
887 Lstream_delete (XLSTREAM (fb_instream));
890 case XLookupNone: return Qnil;
891 case XBufferOverflow:
892 bufptr = (char *) alloca (len+1);
896 return Qnil; /* not reached */
897 #endif /* HAVE_XIM */
901 set_last_server_timestamp (struct device *d, XEvent *x_event)
904 switch (x_event->type)
907 case KeyRelease: t = x_event->xkey.time; break;
909 case ButtonRelease: t = x_event->xbutton.time; break;
911 case LeaveNotify: t = x_event->xcrossing.time; break;
912 case MotionNotify: t = x_event->xmotion.time; break;
913 case PropertyNotify: t = x_event->xproperty.time; break;
914 case SelectionClear: t = x_event->xselectionclear.time; break;
915 case SelectionRequest: t = x_event->xselectionrequest.time; break;
916 case SelectionNotify: t = x_event->xselection.time; break;
919 DEVICE_X_LAST_SERVER_TIMESTAMP (d) = t;
923 x_event_to_emacs_event (XEvent *x_event, struct Lisp_Event *emacs_event)
925 Display *display = x_event->xany.display;
926 struct device *d = get_device_from_display (display);
927 struct x_device *xd = DEVICE_X_DATA (d);
929 if (DEVICE_X_BEING_DELETED (d))
930 /* #### Uh, is this 0 correct? */
933 set_last_server_timestamp (d, x_event);
935 switch (x_event->type)
938 x_handle_sticky_modifiers (x_event, d);
945 unsigned int modifiers = 0;
947 Bool key_event_p = (x_event->type == KeyPress);
948 unsigned int *state =
949 key_event_p ? &x_event->xkey.state : &x_event->xbutton.state;
951 /* If this is a synthetic KeyPress or Button event, and the user
952 has expressed a disinterest in this security hole, then drop
955 ? x_event->xkey.send_event
956 : x_event->xbutton.send_event)
957 #ifdef EXTERNAL_WIDGET
958 /* ben: events get sent to an ExternalShell using XSendEvent.
959 This is not a perfect solution. */
960 && !FRAME_X_EXTERNAL_WINDOW_P
961 (x_any_window_to_frame (d, x_event->xany.window))
963 && !x_allow_sendevents)
966 DEVICE_X_MOUSE_TIMESTAMP (d) =
967 DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d) =
968 key_event_p ? x_event->xkey.time : x_event->xbutton.time;
970 x_handle_sticky_modifiers (x_event, d);
972 if (*state & ControlMask) modifiers |= MOD_CONTROL;
973 if (*state & xd->MetaMask) modifiers |= MOD_META;
974 if (*state & xd->SuperMask) modifiers |= MOD_SUPER;
975 if (*state & xd->HyperMask) modifiers |= MOD_HYPER;
976 if (*state & xd->AltMask) modifiers |= MOD_ALT;
978 /* Ignore the Caps_Lock key if:
979 - any other modifiers are down, so that Caps_Lock doesn't
980 turn C-x into C-X, which would suck.
981 - the event was a mouse event. */
982 if (modifiers || ! key_event_p)
983 *state &= (~LockMask);
985 shift_p = *state & ShiftMask;
986 lock_p = *state & LockMask;
988 if (shift_p || lock_p)
989 modifiers |= MOD_SHIFT;
994 XKeyEvent *ev = &x_event->xkey;
995 /* This used to compute the frame from the given X window and
996 store it here, but we really don't care about the frame. */
997 emacs_event->channel = DEVICE_CONSOLE (d);
998 keysym = x_to_emacs_keysym (&x_event->xkey, 0);
1000 /* If the emacs keysym is nil, then that means that the X
1001 keysym was either a Modifier or NoSymbol, which
1002 probably means that we're in the midst of reading a
1003 Multi_key sequence, or a "dead" key prefix, or XIM
1004 input. Ignore it. */
1008 /* More Caps_Lock garbage: Caps_Lock should *only* add the
1009 shift modifier to two-case keys (that is, A-Z and
1010 related characters). So at this point (after looking up
1011 the keysym) if the keysym isn't a dual-case alphabetic,
1012 and if the caps lock key was down but the shift key
1013 wasn't, then turn off the shift modifier. Gag barf */
1014 /* #### type lossage: assuming equivalence of emacs and
1016 /* !!#### maybe fix for Mule */
1017 if (lock_p && !shift_p &&
1018 ! (CHAR_OR_CHAR_INTP (keysym)
1019 && keysym_obeys_caps_lock_p
1020 ((KeySym) XCHAR_OR_CHAR_INT (keysym), d)))
1021 modifiers &= (~MOD_SHIFT);
1023 /* If this key contains two distinct keysyms, that is,
1024 "shift" generates a different keysym than the
1025 non-shifted key, then don't apply the shift modifier
1026 bit: it's implicit. Otherwise, if there would be no
1027 other way to tell the difference between the shifted
1028 and unshifted version of this key, apply the shift bit.
1029 Non-graphics, like Backspace and F1 get the shift bit
1030 in the modifiers slot. Neither the characters "a",
1031 "A", "2", nor "@" normally have the shift bit set.
1032 However, "F1" normally does. */
1033 if (modifiers & MOD_SHIFT)
1035 int Mode_switch_p = *state & xd->ModeMask;
1036 KeySym bot = XLookupKeysym (ev, Mode_switch_p ? 2 : 0);
1037 KeySym top = XLookupKeysym (ev, Mode_switch_p ? 3 : 1);
1038 if (top && bot && top != bot)
1039 modifiers &= ~MOD_SHIFT;
1041 emacs_event->event_type = key_press_event;
1042 emacs_event->timestamp = ev->time;
1043 emacs_event->event.key.modifiers = modifiers;
1044 emacs_event->event.key.keysym = keysym;
1046 else /* Mouse press/release event */
1048 XButtonEvent *ev = &x_event->xbutton;
1049 struct frame *frame = x_window_to_frame (d, ev->window);
1052 return 0; /* not for us */
1053 XSETFRAME (emacs_event->channel, frame);
1055 emacs_event->event_type = (x_event->type == ButtonPress) ?
1056 button_press_event : button_release_event;
1058 emacs_event->event.button.modifiers = modifiers;
1059 emacs_event->timestamp = ev->time;
1060 emacs_event->event.button.button = ev->button;
1061 emacs_event->event.button.x = ev->x;
1062 emacs_event->event.button.y = ev->y;
1063 /* because we don't seem to get a FocusIn event for button clicks
1064 when a widget-glyph is selected we will assume that we want the
1065 focus if a button gets pressed. */
1066 if (x_event->type == ButtonPress)
1067 handle_focus_event_1 (frame, 1);
1074 XMotionEvent *ev = &x_event->xmotion;
1075 struct frame *frame = x_window_to_frame (d, ev->window);
1076 unsigned int modifiers = 0;
1077 XMotionEvent event2;
1080 return 0; /* not for us */
1082 /* We use MotionHintMask, so we will get only one motion event
1083 until the next time we call XQueryPointer or the user
1084 clicks the mouse. So call XQueryPointer now (meaning that
1085 the event will be in sync with the server just before
1086 Fnext_event() returns). If the mouse is still in motion,
1087 then the server will immediately generate exactly one more
1088 motion event, which will be on the queue waiting for us
1089 next time around. */
1091 if (XQueryPointer (event2.display, event2.window,
1092 &event2.root, &event2.subwindow,
1093 &event2.x_root, &event2.y_root,
1094 &event2.x, &event2.y,
1096 ev = &event2; /* only one structure copy */
1098 DEVICE_X_MOUSE_TIMESTAMP (d) = ev->time;
1100 XSETFRAME (emacs_event->channel, frame);
1101 emacs_event->event_type = pointer_motion_event;
1102 emacs_event->timestamp = ev->time;
1103 emacs_event->event.motion.x = ev->x;
1104 emacs_event->event.motion.y = ev->y;
1105 if (ev->state & ShiftMask) modifiers |= MOD_SHIFT;
1106 if (ev->state & ControlMask) modifiers |= MOD_CONTROL;
1107 if (ev->state & xd->MetaMask) modifiers |= MOD_META;
1108 if (ev->state & xd->SuperMask) modifiers |= MOD_SUPER;
1109 if (ev->state & xd->HyperMask) modifiers |= MOD_HYPER;
1110 if (ev->state & xd->AltMask) modifiers |= MOD_ALT;
1111 /* Currently ignores Shift_Lock but probably shouldn't
1112 (but it definitely should ignore Caps_Lock). */
1113 emacs_event->event.motion.modifiers = modifiers;
1119 /* Patch bogus TAKE_FOCUS messages from MWM; CurrentTime is
1120 passed as the timestamp of the TAKE_FOCUS, which the ICCCM
1121 explicitly prohibits. */
1122 XClientMessageEvent *ev = &x_event->xclient;
1123 #ifdef HAVE_OFFIX_DND
1124 if (DndIsDropMessage(x_event))
1126 unsigned int state, modifiers = 0, button=0;
1127 struct frame *frame = x_any_window_to_frame (d, ev->window);
1129 unsigned long size, dtype;
1130 Lisp_Object l_type = Qnil, l_data = Qnil;
1131 Lisp_Object l_dndlist = Qnil, l_item = Qnil;
1132 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
1134 GCPRO4 (l_type, l_data, l_dndlist, l_item);
1137 return 0; /* not for us */
1138 XSETFRAME (emacs_event->channel, frame);
1140 emacs_event->event_type = misc_user_event;
1141 emacs_event->timestamp = DEVICE_X_LAST_SERVER_TIMESTAMP (d);
1143 state=DndDragButtons(x_event);
1145 if (state & ShiftMask) modifiers |= MOD_SHIFT;
1146 if (state & ControlMask) modifiers |= MOD_CONTROL;
1147 if (state & xd->MetaMask) modifiers |= MOD_META;
1148 if (state & xd->SuperMask) modifiers |= MOD_SUPER;
1149 if (state & xd->HyperMask) modifiers |= MOD_HYPER;
1150 if (state & xd->AltMask) modifiers |= MOD_ALT;
1152 if (state & Button5Mask) button = Button5;
1153 if (state & Button4Mask) button = Button4;
1154 if (state & Button3Mask) button = Button3;
1155 if (state & Button2Mask) button = Button2;
1156 if (state & Button1Mask) button = Button1;
1158 emacs_event->event.misc.modifiers = modifiers;
1159 emacs_event->event.misc.button = button;
1161 DndDropCoordinates(FRAME_X_TEXT_WIDGET(frame), x_event,
1162 &(emacs_event->event.misc.x),
1163 &(emacs_event->event.misc.y) );
1165 DndGetData(x_event,&data,&size);
1167 dtype=DndDataType(x_event);
1170 case DndFiles: /* null terminated strings, end null */
1177 len = strlen ((char*)data);
1178 hurl = dnd_url_hexify_string ((char *)data, "file:");
1179 l_item = make_string ((Bufbyte *)hurl, strlen (hurl));
1180 l_dndlist = Fcons (l_item, l_dndlist);
1184 l_type = Qdragdrop_URL;
1188 l_type = Qdragdrop_MIME;
1189 l_dndlist = list1 ( list3 ( list1 ( make_string ((Bufbyte *)"text/plain", 10) ),
1190 make_string ((Bufbyte *)"8bit", 4),
1191 make_ext_string ((Extbyte *)data,
1192 strlen((char *)data),
1196 /* we have to parse this in some way to extract
1197 content-type and params (in the tm way) and
1199 OR: if data is string, let tm do the job
1200 if data is list[2], give the first two
1203 l_type = Qdragdrop_MIME;
1204 l_dndlist = list1 ( make_ext_string ((Extbyte *)data,
1205 strlen((char *)data),
1213 char *hurl = dnd_url_hexify_string ((char *) data, "file:");
1215 l_dndlist = list1 ( make_string ((Bufbyte *)hurl,
1217 l_type = Qdragdrop_URL;
1223 /* as it is a real URL it should already be escaped
1224 and escaping again will break them (cause % is unsave) */
1225 l_dndlist = list1 ( make_ext_string ((Extbyte *)data,
1226 strlen ((char *)data),
1228 l_type = Qdragdrop_URL;
1230 default: /* Unknown, RawData and any other type */
1231 l_dndlist = list1 ( list3 ( list1 ( make_string ((Bufbyte *)"application/octet-stream", 24) ),
1232 make_string ((Bufbyte *)"8bit", 4),
1233 make_ext_string ((Extbyte *)data,
1236 l_type = Qdragdrop_MIME;
1240 emacs_event->event.misc.function = Qdragdrop_drop_dispatch;
1241 emacs_event->event.misc.object = Fcons (l_type, l_dndlist);
1247 #endif /* HAVE_OFFIX_DND */
1248 if (ev->message_type == DEVICE_XATOM_WM_PROTOCOLS (d)
1249 && (Atom) (ev->data.l[0]) == DEVICE_XATOM_WM_TAKE_FOCUS (d)
1250 && (Atom) (ev->data.l[1]) == 0)
1252 ev->data.l[1] = DEVICE_X_LAST_SERVER_TIMESTAMP (d);
1257 default: /* it's a magic event */
1259 struct frame *frame;
1261 XEvent *x_event_copy = &emacs_event->event.magic.underlying_x_event;
1263 #define FROB(event_member, window_member) \
1264 x_event_copy->event_member = x_event->event_member; \
1265 w = x_event->event_member.window_member
1267 switch (x_event->type)
1269 case SelectionRequest: FROB(xselectionrequest, owner); break;
1270 case SelectionClear: FROB(xselectionclear, window); break;
1271 case SelectionNotify: FROB(xselection, requestor); break;
1272 case PropertyNotify: FROB(xproperty, window); break;
1273 case ClientMessage: FROB(xclient, window); break;
1274 case ConfigureNotify: FROB(xconfigure, window); break;
1276 case GraphicsExpose: FROB(xexpose, window); break;
1278 case UnmapNotify: FROB(xmap, window); break;
1280 case LeaveNotify: FROB(xcrossing, window); break;
1282 case FocusOut: FROB(xfocus, window); break;
1283 case VisibilityNotify: FROB(xvisibility, window); break;
1285 w = x_event->xany.window;
1286 *x_event_copy = *x_event;
1290 frame = x_any_window_to_frame (d, w);
1295 emacs_event->event_type = magic_event;
1296 XSETFRAME (emacs_event->channel, frame);
1306 /************************************************************************/
1307 /* magic-event handling */
1308 /************************************************************************/
1311 handle_focus_event_1 (struct frame *f, int in_p)
1313 #if XtSpecificationRelease > 5
1314 Widget focus_widget = XtGetKeyboardFocusWidget (FRAME_X_TEXT_WIDGET (f));
1317 XIM_focus_event (f, in_p);
1318 #endif /* HAVE_XIM */
1320 /* On focus change, clear all memory of sticky modifiers
1321 to avoid non-intuitive behavior. */
1322 clear_sticky_modifiers (XDEVICE (FRAME_DEVICE (f)));
1324 /* We don't want to handle the focus change now, because we might
1325 be in an accept-process-output, sleep-for, or sit-for. So
1328 Actually, we half handle it: we handle it as far as changing the
1329 box cursor for redisplay, but we don't call any hooks or do any
1330 select-frame stuff until after the sit-for.
1332 Unfortunately native widgets break the model because they grab
1333 the keyboard focus and nothing sets it back again. I cannot find
1334 any reasonable way to do this elsewhere so we assert here that
1335 the keybpard focus is on the emacs text widget. Menus and dialogs
1336 do this in their selection callback, but we don't want that since
1337 a button having focus is legitimate. An edit field having focus
1338 is mandatory. Weirdly you get a FocusOut event when you glick in
1339 a widget-glyph but you don't get a correspondng FocusIn when you
1340 click in the frame. Why is this? */
1342 #if XtSpecificationRelease > 5
1343 && FRAME_X_TEXT_WIDGET (f) != focus_widget
1347 lw_set_keyboard_focus (FRAME_X_SHELL_WIDGET (f),
1348 FRAME_X_TEXT_WIDGET (f));
1350 /* do the generic event-stream stuff. */
1354 struct gcpro gcpro1;
1357 conser = Fcons (frm, Fcons (FRAME_DEVICE (f), in_p ? Qt : Qnil));
1359 emacs_handle_focus_change_preliminary (conser);
1360 enqueue_magic_eval_event (emacs_handle_focus_change_final,
1366 /* This is called from the external-widget code */
1368 void emacs_Xt_handle_focus_event (XEvent *event);
1370 emacs_Xt_handle_focus_event (XEvent *event)
1372 struct device *d = get_device_from_display (event->xany.display);
1375 if (DEVICE_X_BEING_DELETED (d))
1379 * It's curious that we're using x_any_window_to_frame() instead
1380 * of x_window_to_frame(). I don't know what the impact of this is.
1382 f = x_any_window_to_frame (d, event->xfocus.window);
1384 /* focus events are sometimes generated just before
1385 a frame is destroyed. */
1387 handle_focus_event_1 (f, event->type == FocusIn);
1390 /* both MapNotify and VisibilityNotify can cause this
1391 JV is_visible has the same semantics as f->visible*/
1393 change_frame_visibility (struct frame *f, int is_visible)
1397 XSETFRAME (frame, f);
1399 if (!FRAME_VISIBLE_P (f) && is_visible)
1401 FRAME_VISIBLE_P (f) = is_visible;
1402 /* This improves the double flicker when uniconifying a frame
1403 some. A lot of it is not showing a buffer which has changed
1404 while the frame was iconified. To fix it further requires
1405 the good 'ol double redisplay structure. */
1406 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f);
1407 va_run_hook_with_args (Qmap_frame_hook, 1, frame);
1409 else if (FRAME_VISIBLE_P (f) && !is_visible)
1411 FRAME_VISIBLE_P (f) = 0;
1412 va_run_hook_with_args (Qunmap_frame_hook, 1, frame);
1414 else if (FRAME_VISIBLE_P (f) * is_visible < 0)
1416 FRAME_VISIBLE_P(f) = - FRAME_VISIBLE_P(f);
1417 if (FRAME_REPAINT_P(f))
1418 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f);
1419 va_run_hook_with_args (Qmap_frame_hook, 1, frame);
1424 handle_map_event (struct frame *f, XEvent *event)
1428 XSETFRAME (frame, f);
1429 if (event->type == MapNotify)
1431 XWindowAttributes xwa;
1433 /* Bleagh!!!!!! Apparently some window managers (e.g. MWM)
1434 send synthetic MapNotify events when a window is first
1435 created, EVEN IF IT'S CREATED ICONIFIED OR INVISIBLE.
1436 Or something like that. We initially tried a different
1437 solution below, but that ran into a different window-
1440 It seems that the only reliable way is to treat a
1441 MapNotify event as a "hint" that the window might or
1442 might not be visible, and check explicitly. */
1444 XGetWindowAttributes (event->xany.display, event->xmap.window,
1446 if (xwa.map_state != IsViewable)
1448 /* Calling Fframe_iconified_p is the only way we have to
1449 correctly update FRAME_ICONIFIED_P */
1450 Fframe_iconified_p (frame);
1454 FRAME_X_TOTALLY_VISIBLE_P (f) = 1;
1456 /* Bleagh again!!!! We initially tried the following hack
1457 around the MWM problem, but it turns out that TWM
1458 has a race condition when you un-iconify, where it maps
1459 the window and then tells the server that the window
1460 is un-iconified. Usually, XEmacs wakes up between
1461 those two occurrences, and thus thinks that un-iconified
1462 windows are still iconified.
1464 Ah, the joys of X. */
1466 /* By Emacs definition, a frame that is iconified is not
1467 visible. Marking a frame as visible will automatically cause
1468 frame-iconified-p to return nil, regardless of whether the
1469 frame is actually iconified. Therefore, we have to ignore
1470 MapNotify events on iconified frames. (It's not obvious
1471 to me why these are being sent, but it happens at startup
1472 with frames that are initially iconified; perhaps they are
1473 synthetic MapNotify events coming from the window manager.)
1474 Note that `frame-iconified-p' queries the server
1475 to determine whether the frame is currently iconified,
1476 rather than consulting some internal (and likely
1477 inaccurate) state flag. Therefore, ignoring the MapNotify
1479 if (!FRAME_VISIBLE_P (f) && NILP (Fframe_iconified_p (frame)))
1481 change_frame_visibility (f, 1);
1485 FRAME_X_TOTALLY_VISIBLE_P (f) = 0;
1486 change_frame_visibility (f, 0);
1487 /* Calling Fframe_iconified_p is the only way we have to
1488 correctly update FRAME_ICONIFIED_P */
1489 Fframe_iconified_p (frame);
1494 handle_client_message (struct frame *f, XEvent *event)
1496 struct device *d = XDEVICE (FRAME_DEVICE (f));
1499 XSETFRAME (frame, f);
1501 if (event->xclient.message_type == DEVICE_XATOM_WM_PROTOCOLS (d) &&
1502 (Atom) (event->xclient.data.l[0]) == DEVICE_XATOM_WM_DELETE_WINDOW (d))
1504 /* WM_DELETE_WINDOW is a misc-user event, but other ClientMessages,
1505 such as WM_TAKE_FOCUS, are eval events. That's because delete-window
1506 was probably executed with a mouse click, while the others could
1507 have been sent as a result of mouse motion or some other implicit
1508 action. (Call this a "heuristic"...) The reason for caring about
1509 this is so that clicking on the close-box will make emacs prompt
1510 using a dialog box instead of the minibuffer if there are unsaved
1513 enqueue_misc_user_event (frame, Qeval,
1514 list3 (Qdelete_frame, frame, Qt));
1516 else if (event->xclient.message_type == DEVICE_XATOM_WM_PROTOCOLS (d) &&
1517 (Atom) event->xclient.data.l[0] == DEVICE_XATOM_WM_TAKE_FOCUS (d))
1519 handle_focus_event_1 (f, 1);
1521 /* If there is a dialog box up, focus on it.
1523 #### Actually, we're raising it too, which is wrong. We should
1524 #### just focus on it, but lwlib doesn't currently give us an
1525 #### easy way to do that. This should be fixed.
1527 unsigned long take_focus_timestamp = event->xclient.data.l[1];
1528 Widget widget = lw_raise_all_pop_up_widgets ();
1531 /* kludge: raise_all returns bottommost widget, but we really
1532 want the topmost. So just raise it for now. */
1533 XMapRaised (XtDisplay (widget), XtWindow (widget));
1534 /* Grab the focus with the timestamp of the TAKE_FOCUS. */
1535 XSetInputFocus (XtDisplay (widget), XtWindow (widget),
1536 RevertToParent, take_focus_timestamp);
1543 emacs_Xt_handle_magic_event (struct Lisp_Event *emacs_event)
1545 /* This function can GC */
1546 XEvent *event = &emacs_event->event.magic.underlying_x_event;
1547 struct frame *f = XFRAME (EVENT_CHANNEL (emacs_event));
1549 if (!FRAME_LIVE_P (f) || DEVICE_X_BEING_DELETED (XDEVICE (FRAME_DEVICE (f))))
1552 switch (event->type)
1554 case SelectionRequest:
1555 x_handle_selection_request (&event->xselectionrequest);
1558 case SelectionClear:
1559 x_handle_selection_clear (&event->xselectionclear);
1562 case SelectionNotify:
1563 x_handle_selection_notify (&event->xselection);
1566 case PropertyNotify:
1567 x_handle_property_notify (&event->xproperty);
1571 x_redraw_exposed_area (f, event->xexpose.x, event->xexpose.y,
1572 event->xexpose.width, event->xexpose.height);
1575 case GraphicsExpose: /* This occurs when an XCopyArea's source area was
1576 obscured or not available. */
1577 x_redraw_exposed_area (f, event->xexpose.x, event->xexpose.y,
1578 event->xexpose.width, event->xexpose.height);
1583 handle_map_event (f, event);
1587 if (event->xcrossing.detail != NotifyInferior)
1591 XSETFRAME (frame, f);
1592 /* FRAME_X_MOUSE_P (f) = 1; */
1593 va_run_hook_with_args (Qmouse_enter_frame_hook, 1, frame);
1598 if (event->xcrossing.detail != NotifyInferior)
1602 XSETFRAME (frame, f);
1603 /* FRAME_X_MOUSE_P (f) = 0; */
1604 va_run_hook_with_args (Qmouse_leave_frame_hook, 1, frame);
1611 #ifdef EXTERNAL_WIDGET
1612 /* External widget lossage: Ben said:
1613 YUCK. The only way to make focus changes work properly is to
1614 completely ignore all FocusIn/FocusOut events and depend only
1615 on notifications from the ExternalClient widget. */
1616 if (FRAME_X_EXTERNAL_WINDOW_P (f))
1619 handle_focus_event_1 (f, event->type == FocusIn);
1623 handle_client_message (f, event);
1626 case VisibilityNotify: /* window visibility has changed */
1627 if (event->xvisibility.window == XtWindow (FRAME_X_SHELL_WIDGET (f)))
1629 FRAME_X_TOTALLY_VISIBLE_P (f) =
1630 (event->xvisibility.state == VisibilityUnobscured);
1631 /* Note that the fvwm pager only sends VisibilityNotify when
1632 changing pages. Is this all we need to do ? JV */
1633 /* Nope. We must at least trigger a redisplay here.
1634 Since this case seems similar to MapNotify, I've
1635 factored out some code to change_frame_visibility().
1636 This triggers the necessary redisplay and runs
1637 (un)map-frame-hook. - dkindred@cs.cmu.edu */
1638 /* Changed it again to support the tristate visibility flag */
1639 change_frame_visibility (f, (event->xvisibility.state
1640 != VisibilityFullyObscured) ? 1 : -1);
1644 case ConfigureNotify:
1646 XIM_SetGeometry (f);
1656 /************************************************************************/
1657 /* timeout events */
1658 /************************************************************************/
1660 static int timeout_id_tick;
1662 /* Xt interval id's might not fit into an int (they're pointers, as it
1663 happens), so we need to provide a conversion list. */
1668 XtIntervalId interval_id;
1669 struct Xt_timeout *next;
1670 } *pending_timeouts, *completed_timeouts;
1672 struct Xt_timeout_blocktype
1674 Blocktype_declare (struct Xt_timeout);
1675 } *the_Xt_timeout_blocktype;
1677 /* called by XtAppNextEvent() */
1679 Xt_timeout_callback (XtPointer closure, XtIntervalId *id)
1681 struct Xt_timeout *timeout = (struct Xt_timeout *) closure;
1682 struct Xt_timeout *t2 = pending_timeouts;
1683 /* Remove this one from the list of pending timeouts */
1685 pending_timeouts = pending_timeouts->next;
1688 while (t2->next && t2->next != timeout) t2 = t2->next;
1690 t2->next = t2->next->next;
1692 /* Add this one to the list of completed timeouts */
1693 timeout->next = completed_timeouts;
1694 completed_timeouts = timeout;
1698 emacs_Xt_add_timeout (EMACS_TIME thyme)
1700 struct Xt_timeout *timeout = Blocktype_alloc (the_Xt_timeout_blocktype);
1701 EMACS_TIME current_time;
1704 timeout->id = timeout_id_tick++;
1705 timeout->next = pending_timeouts;
1706 pending_timeouts = timeout;
1707 EMACS_GET_TIME (current_time);
1708 EMACS_SUB_TIME (thyme, thyme, current_time);
1709 milliseconds = EMACS_SECS (thyme) * 1000 +
1710 EMACS_USECS (thyme) / 1000;
1711 if (milliseconds < 1)
1713 timeout->interval_id = XtAppAddTimeOut (Xt_app_con, milliseconds,
1714 Xt_timeout_callback,
1715 (XtPointer) timeout);
1720 emacs_Xt_remove_timeout (int id)
1722 struct Xt_timeout *timeout, *t2;
1726 /* Find the timeout on the list of pending ones, if it's still there. */
1727 if (pending_timeouts)
1729 if (id == pending_timeouts->id)
1731 timeout = pending_timeouts;
1732 pending_timeouts = pending_timeouts->next;
1736 t2 = pending_timeouts;
1737 while (t2->next && t2->next->id != id) t2 = t2->next;
1738 if ( t2->next) /*found it */
1741 t2->next = t2->next->next;
1744 /* if it was pending, we have removed it from the list */
1746 XtRemoveTimeOut (timeout->interval_id);
1749 /* It could be that the Xt call back was already called but we didn't convert
1750 into an Emacs event yet */
1751 if (!timeout && completed_timeouts)
1753 /* Code duplication! */
1754 if (id == completed_timeouts->id)
1756 timeout = completed_timeouts;
1757 completed_timeouts = completed_timeouts->next;
1761 t2 = completed_timeouts;
1762 while (t2->next && t2->next->id != id) t2 = t2->next;
1763 if ( t2->next) /*found it */
1766 t2->next = t2->next->next;
1771 /* If we found the thing on the lists of timeouts,
1772 and removed it, deallocate
1775 Blocktype_free (the_Xt_timeout_blocktype, timeout);
1779 Xt_timeout_to_emacs_event (struct Lisp_Event *emacs_event)
1781 struct Xt_timeout *timeout = completed_timeouts;
1783 completed_timeouts = completed_timeouts->next;
1784 emacs_event->event_type = timeout_event;
1785 /* timeout events have nil as channel */
1786 emacs_event->timestamp = 0; /* #### wrong!! */
1787 emacs_event->event.timeout.interval_id = timeout->id;
1788 emacs_event->event.timeout.function = Qnil;
1789 emacs_event->event.timeout.object = Qnil;
1790 Blocktype_free (the_Xt_timeout_blocktype, timeout);
1794 /************************************************************************/
1795 /* process and tty events */
1796 /************************************************************************/
1798 struct what_is_ready_closure
1805 static Lisp_Object *filedesc_with_input;
1806 static struct what_is_ready_closure **filedesc_to_what_closure;
1809 init_what_input_once (void)
1813 filedesc_with_input = xnew_array (Lisp_Object, MAXDESC);
1814 filedesc_to_what_closure =
1815 xnew_array (struct what_is_ready_closure *, MAXDESC);
1817 for (i = 0; i < MAXDESC; i++)
1819 filedesc_to_what_closure[i] = 0;
1820 filedesc_with_input[i] = Qnil;
1823 process_events_occurred = 0;
1824 tty_events_occurred = 0;
1828 mark_what_as_being_ready (struct what_is_ready_closure *closure)
1830 if (NILP (filedesc_with_input[closure->fd]))
1832 SELECT_TYPE temp_mask;
1833 FD_ZERO (&temp_mask);
1834 FD_SET (closure->fd, &temp_mask);
1835 /* Check to make sure there's *really* input available.
1836 Sometimes things seem to get confused and this gets called
1837 for the tty fd when there's really only input available
1838 on some process's fd. (It will subsequently get called
1839 for that process's fd, so returning without setting any
1840 flags will take care of it.) To see the problem, uncomment
1841 the stderr_out below, turn NORMAL_QUIT_CHECK_TIMEOUT_MSECS
1842 down to 25, do sh -c 'xemacs -nw -q -f shell 2>/tmp/log'
1843 and press return repeatedly. (Seen under AIX & Linux.)
1844 -dkindred@cs.cmu.edu */
1845 if (!poll_fds_for_input (temp_mask))
1848 stderr_out ("mark_what_as_being_ready: no input available (fd=%d)\n",
1853 filedesc_with_input[closure->fd] = closure->what;
1854 if (PROCESSP (closure->what))
1855 /* Don't increment this if the current process is already marked
1856 * as having input. */
1857 process_events_occurred++;
1859 tty_events_occurred++;
1864 Xt_what_callback (void *closure, int *source, XtInputId *id)
1866 /* If closure is 0, then we got a fake event from a signal handler.
1867 The only purpose of this is to make XtAppProcessEvent() stop
1870 mark_what_as_being_ready ((struct what_is_ready_closure *) closure);
1873 fake_event_occurred++;
1874 drain_signal_event_pipe ();
1879 select_filedesc (int fd, Lisp_Object what)
1881 struct what_is_ready_closure *closure;
1883 /* If somebody is trying to select something that's already selected
1884 for, then something went wrong. The generic routines ought to
1885 detect this and error before here. */
1886 assert (!filedesc_to_what_closure[fd]);
1888 closure = xnew (struct what_is_ready_closure);
1890 closure->what = what;
1892 XtAppAddInput (Xt_app_con, fd,
1893 (XtPointer) (XtInputReadMask /* | XtInputExceptMask */),
1894 Xt_what_callback, closure);
1895 filedesc_to_what_closure[fd] = closure;
1899 unselect_filedesc (int fd)
1901 struct what_is_ready_closure *closure = filedesc_to_what_closure[fd];
1904 if (!NILP (filedesc_with_input[fd]))
1906 /* We are unselecting this process before we have drained the rest of
1907 the input from it, probably from status_notify() in the command loop.
1908 This can happen like so:
1910 - We are waiting in XtAppNextEvent()
1911 - Process generates output
1912 - Process is marked as being ready
1913 - Process dies, SIGCHLD gets generated before we return (!?)
1914 It could happen I guess.
1915 - sigchld_handler() marks process as dead
1916 - Somehow we end up getting a new KeyPress event on the queue
1917 at the same time (I'm really so sure how that happens but I'm
1918 not sure it can't either so let's assume it can...).
1919 - Key events have priority so we return that instead of the proc.
1920 - Before dispatching the lisp key event we call status_notify()
1921 - Which deselects the process that SIGCHLD marked as dead.
1923 Thus we never remove it from _with_input and turn it into a lisp
1924 event, so we need to do it here. But this does not mean that we're
1925 throwing away the last block of output - status_notify() has already
1926 taken care of running the proc filter or whatever.
1928 filedesc_with_input[fd] = Qnil;
1929 if (PROCESSP (closure->what))
1931 assert (process_events_occurred > 0);
1932 process_events_occurred--;
1936 assert (tty_events_occurred > 0);
1937 tty_events_occurred--;
1940 XtRemoveInput (closure->id);
1942 filedesc_to_what_closure[fd] = 0;
1946 emacs_Xt_select_process (struct Lisp_Process *p)
1948 Lisp_Object process;
1949 int infd = event_stream_unixoid_select_process (p);
1951 XSETPROCESS (process, p);
1952 select_filedesc (infd, process);
1956 emacs_Xt_unselect_process (struct Lisp_Process *p)
1958 int infd = event_stream_unixoid_unselect_process (p);
1960 unselect_filedesc (infd);
1964 emacs_Xt_create_stream_pair (void* inhandle, void* outhandle,
1965 Lisp_Object* instream, Lisp_Object* outstream, int flags)
1967 USID u = event_stream_unixoid_create_stream_pair
1968 (inhandle, outhandle, instream, outstream, flags);
1969 if (u != USID_ERROR)
1975 emacs_Xt_delete_stream_pair (Lisp_Object instream, Lisp_Object outstream)
1977 event_stream_unixoid_delete_stream_pair (instream, outstream);
1978 return USID_DONTHASH;
1981 /* This is called from GC when a process object is about to be freed.
1982 If we've still got pointers to it in this file, we're gonna lose hard.
1985 debug_process_finalization (struct Lisp_Process *p)
1989 Lisp_Object instr, outstr;
1991 get_process_streams (p, &instr, &outstr);
1992 /* if it still has fds, then it hasn't been killed yet. */
1993 assert (NILP(instr));
1994 assert (NILP(outstr));
1995 /* Better not still be in the "with input" table; we know it's got no fds. */
1996 for (i = 0; i < MAXDESC; i++)
1998 Lisp_Object process = filedesc_fds_with_input [i];
1999 assert (!PROCESSP (process) || XPROCESS (process) != p);
2005 Xt_process_to_emacs_event (struct Lisp_Event *emacs_event)
2008 Lisp_Object process;
2010 assert (process_events_occurred > 0);
2011 for (i = 0; i < MAXDESC; i++)
2013 process = filedesc_with_input[i];
2014 if (PROCESSP (process))
2017 assert (i < MAXDESC);
2018 filedesc_with_input[i] = Qnil;
2019 process_events_occurred--;
2020 /* process events have nil as channel */
2021 emacs_event->event_type = process_event;
2022 emacs_event->timestamp = 0; /* #### */
2023 emacs_event->event.process.process = process;
2027 emacs_Xt_select_console (struct console *con)
2029 Lisp_Object console;
2035 if (CONSOLE_X_P (con))
2036 return; /* X consoles are automatically selected for when we
2037 initialize them in Xt */
2038 infd = event_stream_unixoid_select_console (con);
2039 XSETCONSOLE (console, con);
2040 select_filedesc (infd, console);
2042 /* On a stream device (ie: noninteractive), bad things can happen. */
2043 if (EQ (CONSOLE_TYPE (con), Qtty)) {
2044 mousefd = CONSOLE_TTY_MOUSE_FD (con);
2045 /* We check filedesc_to_what_closure[fd] here because if you run
2046 ** XEmacs from a TTY, it will fire up GPM, select the mouse fd, then
2047 ** if you run gnuattach to connect to another TTY, it will fire up
2048 ** GPM again, and try to reselect the mouse fd. GPM uses the same
2049 ** fd for every connection apparently, and select_filedesc will
2050 ** fail its assertion if we try to select it twice.
2052 if ((mousefd >= 0) && !filedesc_to_what_closure[mousefd]) {
2053 select_filedesc (mousefd, console);
2060 emacs_Xt_unselect_console (struct console *con)
2062 Lisp_Object console;
2068 if (CONSOLE_X_P (con))
2069 return; /* X consoles are automatically selected for when we
2070 initialize them in Xt */
2071 infd = event_stream_unixoid_unselect_console (con);
2072 XSETCONSOLE (console, con);
2073 unselect_filedesc (infd);
2075 /* On a stream device (ie: noninteractive), bad things can happen. */
2076 if (EQ (CONSOLE_TYPE (con), Qtty)) {
2077 mousefd = CONSOLE_TTY_MOUSE_FD (con);
2079 unselect_filedesc (mousefd);
2085 /* read an event from a tty, if one is available. Returns non-zero
2086 if an event was available. Note that when this function is
2087 called, there should always be a tty marked as ready for input.
2088 However, the input condition might actually be EOF, so there
2089 may not really be any input available. (In this case,
2090 read_event_from_tty_or_stream_desc() will arrange for the TTY device
2094 Xt_tty_to_emacs_event (struct Lisp_Event *emacs_event)
2098 assert (tty_events_occurred > 0);
2099 for (i = 0; i < MAXDESC; i++)
2101 Lisp_Object console = filedesc_with_input[i];
2102 if (CONSOLEP (console))
2104 assert (tty_events_occurred > 0);
2105 tty_events_occurred--;
2106 filedesc_with_input[i] = Qnil;
2107 if (read_event_from_tty_or_stream_desc
2108 (emacs_event, XCONSOLE (console), i))
2117 /************************************************************************/
2118 /* debugging functions to decipher an event */
2119 /************************************************************************/
2122 #include "xintrinsicp.h" /* only describe_event() needs this */
2123 #include <X11/Xproto.h> /* only describe_event() needs this */
2126 describe_event_window (Window window, Display *display)
2130 stderr_out (" window: 0x%lx", (unsigned long) window);
2131 w = XtWindowToWidget (display, window);
2133 stderr_out (" %s", w->core.widget_class->core_class.class_name);
2134 f = x_any_window_to_frame (get_device_from_display (display), window);
2137 char *buf = alloca_array (char, XSTRING_LENGTH (f->name) + 4);
2138 sprintf (buf, " \"%s\"", XSTRING_DATA (f->name));
2139 write_string_to_stdio_stream (stderr, 0, (Bufbyte *) buf, 0,
2140 strlen (buf), FORMAT_TERMINAL);
2146 XEvent_mode_to_string (int mode)
2150 case NotifyNormal: return "Normal";
2151 case NotifyGrab: return "Grab";
2152 case NotifyUngrab: return "Ungrab";
2153 case NotifyWhileGrabbed: return "WhileGrabbed";
2154 default: return "???";
2159 XEvent_detail_to_string (int detail)
2163 case NotifyAncestor: return "Ancestor";
2164 case NotifyInferior: return "Inferior";
2165 case NotifyNonlinear: return "Nonlinear";
2166 case NotifyNonlinearVirtual: return "NonlinearVirtual";
2167 case NotifyPointer: return "Pointer";
2168 case NotifyPointerRoot: return "PointerRoot";
2169 case NotifyDetailNone: return "DetailNone";
2170 default: return "???";
2175 XEvent_visibility_to_string (int state)
2179 case VisibilityFullyObscured: return "FullyObscured";
2180 case VisibilityPartiallyObscured: return "PartiallyObscured";
2181 case VisibilityUnobscured: return "Unobscured";
2182 default: return "???";
2187 describe_event (XEvent *event)
2190 struct device *d = get_device_from_display (event->xany.display);
2192 sprintf (buf, "%s%s", x_event_name (event->type),
2193 event->xany.send_event ? " (send)" : "");
2194 stderr_out ("%-30s", buf);
2195 switch (event->type)
2200 XFocusChangeEvent *ev = &event->xfocus;
2201 describe_event_window (ev->window, ev->display);
2202 stderr_out (" mode: %s\n", XEvent_mode_to_string (ev->mode));
2203 stderr_out (" detail: %s\n", XEvent_detail_to_string(ev->detail));
2209 XKeyEvent *ev = &event->xkey;
2210 unsigned int state = ev->state;
2212 describe_event_window (ev->window, ev->display);
2213 stderr_out (" subwindow: %ld\n", ev->subwindow);
2214 stderr_out (" state: ");
2215 /* Complete list of modifier key masks */
2216 if (state & ShiftMask) stderr_out ("Shift ");
2217 if (state & LockMask) stderr_out ("Lock ");
2218 if (state & ControlMask) stderr_out ("Control ");
2219 if (state & Mod1Mask) stderr_out ("Mod1 ");
2220 if (state & Mod2Mask) stderr_out ("Mod2 ");
2221 if (state & Mod3Mask) stderr_out ("Mod3 ");
2222 if (state & Mod4Mask) stderr_out ("Mod4 ");
2223 if (state & Mod5Mask) stderr_out ("Mod5 ");
2226 stderr_out ("vanilla\n");
2229 if (x_key_is_modifier_p (ev->keycode, d))
2230 stderr_out (" Modifier key");
2231 stderr_out (" keycode: 0x%x\n", ev->keycode);
2236 if (x_debug_events > 1)
2238 XExposeEvent *ev = &event->xexpose;
2239 describe_event_window (ev->window, ev->display);
2240 stderr_out (" region: x=%d y=%d width=%d height=%d\n",
2241 ev->x, ev->y, ev->width, ev->height);
2242 stderr_out (" count: %d\n", ev->count);
2248 case GraphicsExpose:
2249 if (x_debug_events > 1)
2251 XGraphicsExposeEvent *ev = &event->xgraphicsexpose;
2252 describe_event_window (ev->drawable, ev->display);
2253 stderr_out (" major: %s\n",
2254 (ev ->major_code == X_CopyArea ? "CopyArea" :
2255 (ev->major_code == X_CopyPlane ? "CopyPlane" : "?")));
2256 stderr_out (" region: x=%d y=%d width=%d height=%d\n",
2257 ev->x, ev->y, ev->width, ev->height);
2258 stderr_out (" count: %d\n", ev->count);
2266 if (x_debug_events > 1)
2268 XCrossingEvent *ev = &event->xcrossing;
2269 describe_event_window (ev->window, ev->display);
2271 stderr_out(" subwindow: 0x%x\n", ev->subwindow);
2272 stderr_out(" pos: %d %d\n", ev->x, ev->y);
2273 stderr_out(" root pos: %d %d\n", ev->x_root, ev->y_root);
2275 stderr_out(" mode: %s\n", XEvent_mode_to_string(ev->mode));
2276 stderr_out(" detail: %s\n", XEvent_detail_to_string(ev->detail));
2277 stderr_out(" focus: %d\n", ev->focus);
2279 stderr_out(" state: 0x%x\n", ev->state);
2286 case ConfigureNotify:
2287 if (x_debug_events > 1)
2289 XConfigureEvent *ev = &event->xconfigure;
2290 describe_event_window (ev->window, ev->display);
2291 stderr_out(" above: 0x%lx\n", ev->above);
2292 stderr_out(" size: %d %d %d %d\n", ev->x, ev->y,
2293 ev->width, ev->height);
2294 stderr_out(" redirect: %d\n", ev->override_redirect);
2300 case VisibilityNotify:
2301 if (x_debug_events > 1)
2303 XVisibilityEvent *ev = &event->xvisibility;
2304 describe_event_window (ev->window, ev->display);
2305 stderr_out(" state: %s\n", XEvent_visibility_to_string(ev->state));
2313 XClientMessageEvent *ev = &event->xclient;
2314 char *name = XGetAtomName (ev->display, ev->message_type);
2315 stderr_out ("%s", name);
2316 if (!strcmp (name, "WM_PROTOCOLS")) {
2317 char *protname = XGetAtomName (ev->display, ev->data.l[0]);
2318 stderr_out ("(%s)", protname);
2334 #endif /* include describe_event definition */
2337 /************************************************************************/
2338 /* get the next event from Xt */
2339 /************************************************************************/
2341 static Lisp_Object dispatch_event_queue, dispatch_event_queue_tail;
2344 enqueue_Xt_dispatch_event (Lisp_Object event)
2346 enqueue_event (event, &dispatch_event_queue, &dispatch_event_queue_tail);
2350 dequeue_Xt_dispatch_event (void)
2352 return dequeue_event (&dispatch_event_queue, &dispatch_event_queue_tail);
2355 /* This business exists because menu events "happen" when
2356 menubar_selection_callback() is called from somewhere deep
2357 within XtAppProcessEvent in emacs_Xt_next_event(). The
2358 callback needs to terminate the modal loop in that function
2359 or else it will continue waiting until another event is
2362 Same business applies to scrollbar events. */
2365 signal_special_Xt_user_event (Lisp_Object channel, Lisp_Object function,
2368 Lisp_Object event = Fmake_event (Qnil, Qnil);
2370 XEVENT (event)->event_type = misc_user_event;
2371 XEVENT (event)->channel = channel;
2372 XEVENT (event)->event.eval.function = function;
2373 XEVENT (event)->event.eval.object = object;
2375 enqueue_Xt_dispatch_event (event);
2379 emacs_Xt_next_event (struct Lisp_Event *emacs_event)
2381 we_didnt_get_an_event:
2383 while (NILP (dispatch_event_queue) &&
2384 !completed_timeouts &&
2385 !fake_event_occurred &&
2386 !process_events_occurred &&
2387 !tty_events_occurred)
2390 /* Stupid logic in XtAppProcessEvent() dictates that, if process
2391 events and X events are both available, the process event gets
2392 taken first. This will cause an infinite loop if we're being
2393 called from Fdiscard_input().
2395 if (XtAppPending (Xt_app_con) & XtIMXEvent)
2396 XtAppProcessEvent (Xt_app_con, XtIMXEvent);
2399 Lisp_Object devcons, concons;
2401 /* We're about to block. Xt has a bug in it (big surprise,
2402 there) in that it blocks using select() and doesn't
2403 flush the Xlib output buffers (XNextEvent() does this
2404 automatically before blocking). So it's necessary
2405 for us to do this ourselves. If we don't do it, then
2406 display output may not be seen until the next time
2407 an X event is received. (This happens esp. with
2408 subprocess output that gets sent to a visible buffer.)
2410 #### The above comment may not have any validity. */
2412 DEVICE_LOOP_NO_BREAK (devcons, concons)
2415 d = XDEVICE (XCAR (devcons));
2417 if (DEVICE_X_P (d) && DEVICE_X_DISPLAY (d))
2418 /* emacs may be exiting */
2419 XFlush (DEVICE_X_DISPLAY (d));
2421 XtAppProcessEvent (Xt_app_con, XtIMAll);
2425 if (!NILP (dispatch_event_queue))
2427 Lisp_Object event, event2;
2428 XSETEVENT (event2, emacs_event);
2429 event = dequeue_Xt_dispatch_event ();
2430 Fcopy_event (event, event2);
2431 Fdeallocate_event (event);
2433 else if (tty_events_occurred)
2435 if (!Xt_tty_to_emacs_event (emacs_event))
2436 goto we_didnt_get_an_event;
2438 else if (completed_timeouts)
2439 Xt_timeout_to_emacs_event (emacs_event);
2440 else if (fake_event_occurred)
2442 /* A dummy event, so that a cycle of the command loop will occur. */
2443 fake_event_occurred = 0;
2444 /* eval events have nil as channel */
2445 emacs_event->event_type = eval_event;
2446 emacs_event->event.eval.function = Qidentity;
2447 emacs_event->event.eval.object = Qnil;
2449 else /* if (process_events_occurred) */
2450 Xt_process_to_emacs_event (emacs_event);
2452 /* No need to call XFilterEvent; Xt does it for us */
2456 emacs_Xt_event_handler (Widget wid /* unused */,
2457 XtPointer closure /* unused */,
2459 Boolean *continue_to_dispatch /* unused */)
2461 Lisp_Object emacs_event = Fmake_event (Qnil, Qnil);
2464 if (x_debug_events > 0)
2466 describe_event (event);
2468 #endif /* DEBUG_XEMACS */
2469 if (x_event_to_emacs_event (event, XEVENT (emacs_event)))
2470 enqueue_Xt_dispatch_event (emacs_event);
2472 Fdeallocate_event (emacs_event);
2476 /************************************************************************/
2477 /* input pending / C-g checking */
2478 /************************************************************************/
2481 quit_char_predicate (Display *display, XEvent *event, XPointer data)
2483 struct device *d = get_device_from_display (display);
2484 struct x_device *xd = DEVICE_X_DATA (d);
2486 Bool *critical = (Bool *) data;
2491 if ((event->type != KeyPress) ||
2492 (! x_any_window_to_frame (d, event->xany.window)) ||
2494 & (xd->MetaMask | xd->HyperMask | xd->SuperMask | xd->AltMask)))
2497 /* This duplicates some code that exists elsewhere, but it's relatively
2498 fast and doesn't cons. */
2499 keysym = x_to_emacs_keysym (&event->xkey, 1);
2500 if (NILP (keysym)) return 0;
2501 if (CHAR_OR_CHAR_INTP (keysym))
2502 c = XCHAR_OR_CHAR_INT (keysym);
2503 /* Highly doubtful that these are the quit character, but... */
2504 else if (EQ (keysym, QKbackspace)) c = '\b';
2505 else if (EQ (keysym, QKtab)) c = '\t';
2506 else if (EQ (keysym, QKlinefeed)) c = '\n';
2507 else if (EQ (keysym, QKreturn)) c = '\r';
2508 else if (EQ (keysym, QKescape)) c = 27;
2509 else if (EQ (keysym, QKspace)) c = ' ';
2510 else if (EQ (keysym, QKdelete)) c = 127;
2513 if (event->xkey.state & xd->MetaMask) c |= 0x80;
2514 if ((event->xkey.state & ControlMask) && !(c >= 'A' && c <= 'Z'))
2515 c &= 0x1F; /* unshifted control characters */
2516 quit_char = CONSOLE_QUIT_CHAR (XCONSOLE (DEVICE_CONSOLE (d)));
2519 /* If we've got Control-Shift-G instead of Control-G, that means
2520 we have a critical_quit. Caps_Lock is its own modifier, so it
2521 won't cause ^G to act differently than before. */
2522 if (event->xkey.state & ControlMask) c &= 0x1F;
2525 if (critical) *critical = True;
2531 /* This scans the X input queue for a KeyPress event that matches the
2532 quit character, and sets Vquit_flag. This is called from the
2533 QUIT macro to determine whether we should quit.
2535 In a SIGIO world, this won't be called unless a SIGIO has happened
2536 since the last time we checked.
2538 In a non-SIGIO world, this is called from emacs_Xt_event_pending_p
2539 (which is called from input_pending_p).
2542 x_check_for_quit_char (Display *display)
2546 Bool critical_quit = False;
2547 XEventsQueued (display, QueuedAfterReading);
2548 queued = XCheckIfEvent (display, &event,
2549 quit_char_predicate,
2550 (char *) &critical_quit);
2553 Vquit_flag = (critical_quit ? Qcritical : Qt);
2554 /* don't put the event back onto the queue. Those functions that
2555 wanted to read a ^G directly have arranged to do this. */
2560 check_for_tty_quit_char (struct device *d)
2562 SELECT_TYPE temp_mask;
2563 int infd = DEVICE_INFD (d);
2564 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
2565 Emchar quit_char = CONSOLE_QUIT_CHAR (con);
2567 FD_ZERO (&temp_mask);
2568 FD_SET (infd, &temp_mask);
2575 if (!poll_fds_for_input (temp_mask))
2578 event = Fmake_event (Qnil, Qnil);
2579 if (!read_event_from_tty_or_stream_desc (XEVENT (event), con, infd))
2580 /* EOF, or something ... */
2582 /* #### bogus. quit-char should be allowed to be any sort
2584 the_char = event_to_character (XEVENT (event), 1, 0, 0);
2585 if (the_char >= 0 && the_char == quit_char)
2588 /* do not queue the C-g. See above. */
2592 /* queue the read event to be read for real later. */
2593 enqueue_Xt_dispatch_event (event);
2598 emacs_Xt_quit_p (void)
2600 Lisp_Object devcons, concons;
2601 CONSOLE_LOOP (concons)
2603 struct console *con = XCONSOLE (XCAR (concons));
2604 if (!con->input_enabled)
2607 CONSOLE_DEVICE_LOOP (devcons, con)
2610 d = XDEVICE (XCAR (devcons));
2612 if (DEVICE_X_P (d) && DEVICE_X_DISPLAY (d))
2613 /* emacs may be exiting */
2614 x_check_for_quit_char (DEVICE_X_DISPLAY (d));
2615 else if (DEVICE_TTY_P (d))
2616 check_for_tty_quit_char (d);
2622 drain_X_queue (void)
2624 while (XtAppPending (Xt_app_con) & XtIMXEvent)
2625 XtAppProcessEvent (Xt_app_con, XtIMXEvent);
2629 emacs_Xt_event_pending_p (int user_p)
2634 /* If `user_p' is false, then this function returns whether there are any
2635 X, timeout, or fd events pending (that is, whether emacs_Xt_next_event()
2636 would return immediately without blocking).
2638 if `user_p' is true, then this function returns whether there are any
2639 *user generated* events available (that is, whether there are keyboard
2640 or mouse-click events ready to be read). This also implies that
2641 emacs_Xt_next_event() would not block.
2643 In a non-SIGIO world, this also checks whether the user has typed ^G,
2644 since this is a convenient place to do so. We don't need to do this
2645 in a SIGIO world, since input causes an interrupt.
2649 /* I don't think there's any point to this and it will nullify
2650 the speed gains achieved by the sigio_happened checking below.
2651 Its only advantage is that it may possibly make C-g response
2652 a bit faster. The C-g will be noticed within 0.25 second, anyway,
2653 even without this. */
2655 /* First check for C-g if necessary */
2660 /* This function used to simply check whether there were any X
2661 events (or if user_p was 1, it iterated over all the pending
2662 X events using XCheckIfEvent(), looking for keystrokes and
2663 button events). That worked in the old cheesoid event loop,
2664 which didn't go through XtAppDispatchEvent(), but it doesn't
2665 work any more -- X events may not result in anything. For
2666 example, a button press in a blank part of the menubar appears
2667 as an X event but will not result in any Emacs events (a
2668 button press that activates the menubar results in an Emacs
2669 event through the stop_next_event mechanism).
2671 The only accurate way of determining whether these X events
2672 translate into Emacs events is to go ahead and dispatch them
2673 until there's something on the dispatch queue. */
2675 /* See if there are any user events already on the queue. */
2676 EVENT_CHAIN_LOOP (event, dispatch_event_queue)
2677 if (!user_p || command_event_p (event))
2680 /* See if there's any TTY input available.
2682 if (poll_fds_for_input (tty_only_mask))
2687 /* If not user_p and there are any timer or file-desc events
2688 pending, we know there will be an event so we're through. */
2689 XtInputMask pending_value;
2691 /* Note that formerly we just checked the value of XtAppPending()
2692 to determine if there was file-desc input. This doesn't
2693 work any more with the signal_event_pipe; XtAppPending()
2694 will says "yes" in this case but there isn't really any
2695 input. Another way of fixing this problem is for the
2696 signal_event_pipe to generate actual input in the form
2697 of an identity eval event or something. (#### maybe this
2698 actually happens?) */
2700 if (poll_fds_for_input (process_only_mask))
2703 pending_value = XtAppPending (Xt_app_con);
2705 if (pending_value & XtIMTimer)
2709 /* XtAppPending() can be super-slow, esp. over a network connection.
2710 Quantify results have indicated that in some cases the
2711 call to detect_input_pending() completely dominates the
2712 running time of redisplay(). Fortunately, in a SIGIO world
2713 we can more quickly determine whether there are any X events:
2714 if an event has happened since the last time we checked, then
2715 a SIGIO will have happened. On a machine with broken SIGIO,
2716 we'll still be in an OK state -- the sigio_happened flag
2717 will get set at least once a second, so we'll be no more than
2718 one second behind reality. (In general it's OK if we
2719 erroneously report no input pending when input is actually
2720 pending() -- preemption is just a bit less efficient, that's
2721 all. It's bad bad bad if you err the other way -- you've
2722 promised that `next-event' won't block but it actually will,
2723 and some action might get delayed until the next time you
2727 /* quit_check_signal_tick_count is volatile so try to avoid race conditions
2728 by using a temporary variable */
2729 tick_count_val = quit_check_signal_tick_count;
2730 if (last_quit_check_signal_tick_count != tick_count_val)
2732 last_quit_check_signal_tick_count = tick_count_val;
2734 /* We need to drain the entire queue now -- if we only
2735 drain part of it, we may later on end up with events
2736 actually pending but detect_input_pending() returning
2737 false because there wasn't another SIGIO. */
2740 EVENT_CHAIN_LOOP (event, dispatch_event_queue)
2741 if (!user_p || command_event_p (event))
2749 /************************************************************************/
2750 /* replacement for standard string-to-pixel converter */
2751 /************************************************************************/
2753 /* This was constructed by ripping off the standard string-to-pixel
2754 converter from Converters.c in the Xt source code and modifying
2759 /* This is exported by the Xt library (at least by mine). If this
2760 isn't the case somewhere, rename this appropriately and remove
2761 the '#if 0'. Note, however, that I got "unknown structure"
2762 errors when I tried this. */
2763 XtConvertArgRec Const colorConvertArgs[] = {
2764 {XtWidgetBaseOffset, (XtPointer)XtOffsetOf(WidgetRec, core.screen),
2766 {XtWidgetBaseOffset, (XtPointer)XtOffsetOf(WidgetRec, core.colormap),
2772 #define done(type, value) \
2773 if (toVal->addr != NULL) { \
2774 if (toVal->size < sizeof(type)) { \
2775 toVal->size = sizeof(type); \
2778 *(type*)(toVal->addr) = (value); \
2780 static type static_val; \
2781 static_val = (value); \
2782 toVal->addr = (XPointer)&static_val; \
2784 toVal->size = sizeof(type); \
2785 return True /* Caller supplies `;' */
2787 /* JH: We use this because I think there's a possibility this
2788 is called before the device is properly set up, in which case
2789 I don't want to abort. */
2790 extern struct device *get_device_from_display_1 (Display *dpy);
2793 Boolean EmacsXtCvtStringToPixel (
2797 XrmValuePtr fromVal,
2799 XtPointer *closure_ret)
2801 String str = (String)fromVal->addr;
2810 Cardinal num_params = 1;
2811 XtAppContext the_app_con = XtDisplayToApplicationContext (dpy);
2813 if (*num_args != 2) {
2814 XtAppWarningMsg(the_app_con, "wrongParameters", "cvtStringToPixel",
2816 "String to pixel conversion needs screen and colormap arguments",
2817 (String *)NULL, (Cardinal *)NULL);
2821 screen = *((Screen **) args[0].addr);
2822 colormap = *((Colormap *) args[1].addr);
2824 /* The original uses the private function CompareISOLatin1().
2825 Use XmuCompareISOLatin1() if you want, but I don't think it
2826 makes any difference here. */
2827 if (strcmp(str, XtDefaultBackground) == 0) {
2828 *closure_ret = False;
2829 /* This refers to the display's "*reverseVideo" resource.
2830 These display resources aren't documented anywhere that
2831 I can find, so I'm going to ignore this. */
2832 /* if (pd->rv) done(Pixel, BlackPixelOfScreen(screen)) else */
2833 done(Pixel, WhitePixelOfScreen(screen));
2835 if (strcmp(str, XtDefaultForeground) == 0) {
2836 *closure_ret = False;
2837 /* if (pd->rv) done(Pixel, WhitePixelOfScreen(screen)) else */
2838 done(Pixel, BlackPixelOfScreen(screen));
2841 /* Originally called XAllocNamedColor() here. */
2842 if ((d = get_device_from_display_1(dpy))) {
2843 visual = DEVICE_X_VISUAL(d);
2844 if (colormap != DEVICE_X_COLORMAP(d)) {
2845 XtAppWarningMsg(the_app_con, "wierdColormap", "cvtStringToPixel",
2847 "The colormap passed to cvtStringToPixel doesn't match the one registerd to the device.\n",
2849 status = XAllocNamedColor(dpy, colormap, (char*)str, &screenColor, &exactColor);
2851 status = XParseColor (dpy, colormap, (char*)str, &screenColor);
2853 status = allocate_nearest_color (dpy, colormap, visual, &screenColor);
2857 /* We haven't set up this device totally yet, so just punt */
2858 status = XAllocNamedColor(dpy, colormap, (char*)str, &screenColor, &exactColor);
2862 /* Server returns a specific error code but Xlib discards it. Ugh */
2863 if (XLookupColor(DisplayOfScreen(screen), colormap, (char*) str,
2864 &exactColor, &screenColor)) {
2865 XtAppWarningMsg(the_app_con, "noColormap", "cvtStringToPixel",
2867 "Cannot allocate colormap entry for \"%s\"",
2868 params, &num_params);
2871 XtAppWarningMsg(the_app_con, "badValue", "cvtStringToPixel",
2873 "Color name \"%s\" is not defined", params, &num_params);
2876 *closure_ret = False;
2879 *closure_ret = (char*)True;
2880 done(Pixel, screenColor.pixel);
2885 static void EmacsFreePixel (
2892 if (*num_args != 2) {
2893 XtAppWarningMsg(app, "wrongParameters","freePixel","XtToolkitError",
2894 "Freeing a pixel requires screen and colormap arguments",
2895 (String *)NULL, (Cardinal *)NULL);
2900 Screen *screen = *((Screen **) args[0].addr);
2901 Colormap colormap = *((Colormap *) args[1].addr);
2902 XFreeColors(DisplayOfScreen(screen), colormap,
2903 (unsigned long*)toVal->addr, 1, (unsigned long)0);
2908 /************************************************************************/
2909 /* initialization */
2910 /************************************************************************/
2913 syms_of_event_Xt (void)
2915 defsymbol (&Qkey_mapping, "key-mapping");
2916 defsymbol (&Qsans_modifiers, "sans-modifiers");
2920 vars_of_event_Xt (void)
2922 dispatch_event_queue = Qnil;
2923 staticpro (&dispatch_event_queue);
2924 dispatch_event_queue_tail = Qnil;
2926 /* this function only makes safe calls */
2927 init_what_input_once ();
2929 Xt_event_stream = xnew (struct event_stream);
2930 Xt_event_stream->event_pending_p = emacs_Xt_event_pending_p;
2931 Xt_event_stream->next_event_cb = emacs_Xt_next_event;
2932 Xt_event_stream->handle_magic_event_cb = emacs_Xt_handle_magic_event;
2933 Xt_event_stream->add_timeout_cb = emacs_Xt_add_timeout;
2934 Xt_event_stream->remove_timeout_cb = emacs_Xt_remove_timeout;
2935 Xt_event_stream->select_console_cb = emacs_Xt_select_console;
2936 Xt_event_stream->unselect_console_cb = emacs_Xt_unselect_console;
2937 Xt_event_stream->select_process_cb = emacs_Xt_select_process;
2938 Xt_event_stream->unselect_process_cb = emacs_Xt_unselect_process;
2939 Xt_event_stream->quit_p_cb = emacs_Xt_quit_p;
2940 Xt_event_stream->create_stream_pair_cb = emacs_Xt_create_stream_pair;
2941 Xt_event_stream->delete_stream_pair_cb = emacs_Xt_delete_stream_pair;
2943 DEFVAR_BOOL ("modifier-keys-are-sticky", &modifier_keys_are_sticky /*
2944 *Non-nil makes modifier keys sticky.
2945 This means that you can release the modifier key before pressing down
2946 the key that you wish to be modified. Although this is non-standard
2947 behavior, it is recommended because it reduces the strain on your hand,
2948 thus reducing the incidence of the dreaded Emacs-pinky syndrome.
2950 modifier_keys_are_sticky = 0;
2952 DEFVAR_BOOL ("x-allow-sendevents", &x_allow_sendevents /*
2953 *Non-nil means to allow synthetic events. Nil means they are ignored.
2954 Beware: allowing emacs to process SendEvents opens a big security hole.
2956 x_allow_sendevents = 0;
2959 DEFVAR_INT ("x-debug-events", &x_debug_events /*
2960 If non-zero, display debug information about X events that XEmacs sees.
2961 Information is displayed on stderr. Currently defined values are:
2963 1 == non-verbose output
2969 the_Xt_timeout_blocktype = Blocktype_new (struct Xt_timeout_blocktype);
2971 last_quit_check_signal_tick_count = 0;
2974 /* This mess is a hack that patches the shell widget to treat visual inheritance
2975 the same as colormap and depth inheritance */
2977 static XtInitProc orig_shell_init_proc;
2979 static void ShellVisualPatch(Widget wanted, Widget new,
2980 ArgList args, Cardinal *num_args)
2983 ShellWidget w = (ShellWidget) new;
2985 /* first, call the original setup */
2986 (*orig_shell_init_proc)(wanted, new, args, num_args);
2988 /* if the visual isn't explicitly set, grab it from the nearest shell ancestor */
2989 if (w->shell.visual == CopyFromParent) {
2991 while (p && !XtIsShell(p)) p = XtParent(p);
2992 if (p) w->shell.visual = ((ShellWidget)p)->shell.visual;
2997 init_event_Xt_late (void) /* called when already initialized */
2999 timeout_id_tick = 1;
3000 pending_timeouts = 0;
3001 completed_timeouts = 0;
3003 event_stream = Xt_event_stream;
3005 #if defined(HAVE_XIM) || defined(USE_XFONTSET)
3006 Initialize_Locale();
3007 #endif /* HAVE_XIM || USE_XFONTSET */
3009 XtToolkitInitialize ();
3010 Xt_app_con = XtCreateApplicationContext ();
3011 XtAppSetFallbackResources (Xt_app_con, (String *) x_fallback_resources);
3014 x_selection_timeout = (XtAppGetSelectionTimeout (Xt_app_con) / 1000);
3015 XSetErrorHandler (x_error_handler);
3016 XSetIOErrorHandler (x_IO_error_handler);
3019 XtAppAddInput (Xt_app_con, signal_event_pipe[0],
3020 (XtPointer) (XtInputReadMask /* | XtInputExceptMask */),
3021 Xt_what_callback, 0);
3024 XtAppSetTypeConverter (Xt_app_con, XtRString, XtRPixel,
3025 EmacsXtCvtStringToPixel,
3026 (XtConvertArgList) colorConvertArgs,
3027 2, XtCacheByDisplay, EmacsFreePixel);
3030 XtAppSetTypeConverter (Xt_app_con, XtRString, XtRXimStyles,
3031 EmacsXtCvtStringToXIMStyles,
3033 XtCacheByDisplay, EmacsFreeXIMStyles);
3034 #endif /* XIM_XLIB */
3036 /* insert the visual inheritance patch/hack described above */
3037 orig_shell_init_proc = shellClassRec.core_class.initialize;
3038 shellClassRec.core_class.initialize = ShellVisualPatch;