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);
812 len = XmbLookupString (xic, event, bufptr, bufsiz, &keysym, &status);
813 #endif /* HAVE_XIM */
816 if (x_debug_events > 0)
818 stderr_out (" status=");
819 #define print_status_when(S) if (status == S) stderr_out (#S)
820 print_status_when (XLookupKeySym);
821 print_status_when (XLookupBoth);
822 print_status_when (XLookupChars);
823 print_status_when (XLookupNone);
824 print_status_when (XBufferOverflow);
826 if (status == XLookupKeySym || status == XLookupBoth)
827 stderr_out (" keysym=%s", XKeysymToString (keysym));
828 if (status == XLookupChars || status == XLookupBoth)
833 stderr_out (" chars=\"");
834 for (j=0; j<len; j++)
835 stderr_out ("%c", bufptr[j]);
838 else if (bufptr[0] <= 32 || bufptr[0] >= 127)
839 stderr_out (" char=0x%x", bufptr[0]);
841 stderr_out (" char=%c", bufptr[0]);
845 #endif /* DEBUG_XEMACS */
851 return (IsModifierKey (keysym) || keysym == XK_Mode_switch )
852 ? Qnil : x_keysym_to_emacs_keysym (keysym, simple_p);
856 /* Generate multiple emacs events */
857 struct device *d = get_device_from_display (event->display);
859 Lisp_Object instream, fb_instream;
861 struct gcpro gcpro1, gcpro2;
864 make_fixed_buffer_input_stream ((unsigned char *) bufptr, len);
866 /* ### Use Fget_coding_system (Vcomposed_input_coding_system) */
868 make_decoding_input_stream (XLSTREAM (fb_instream),
869 Fget_coding_system (Qundecided));
871 istr = XLSTREAM (instream);
873 GCPRO2 (instream, fb_instream);
874 while ((ch = Lstream_get_emchar (istr)) != EOF)
876 Lisp_Object emacs_event = Fmake_event (Qnil, Qnil);
877 struct Lisp_Event *ev = XEVENT (emacs_event);
878 ev->channel = DEVICE_CONSOLE (d);
879 ev->event_type = key_press_event;
880 ev->timestamp = event->time;
881 ev->event.key.modifiers = 0;
882 ev->event.key.keysym = make_char (ch);
883 enqueue_Xt_dispatch_event (emacs_event);
885 Lstream_close (istr);
887 Lstream_delete (istr);
888 Lstream_delete (XLSTREAM (fb_instream));
891 case XLookupNone: return Qnil;
892 case XBufferOverflow:
893 bufptr = (char *) alloca (len+1);
897 return Qnil; /* not reached */
898 #endif /* HAVE_XIM */
902 set_last_server_timestamp (struct device *d, XEvent *x_event)
905 switch (x_event->type)
908 case KeyRelease: t = x_event->xkey.time; break;
910 case ButtonRelease: t = x_event->xbutton.time; break;
912 case LeaveNotify: t = x_event->xcrossing.time; break;
913 case MotionNotify: t = x_event->xmotion.time; break;
914 case PropertyNotify: t = x_event->xproperty.time; break;
915 case SelectionClear: t = x_event->xselectionclear.time; break;
916 case SelectionRequest: t = x_event->xselectionrequest.time; break;
917 case SelectionNotify: t = x_event->xselection.time; break;
920 DEVICE_X_LAST_SERVER_TIMESTAMP (d) = t;
924 x_event_to_emacs_event (XEvent *x_event, struct Lisp_Event *emacs_event)
926 Display *display = x_event->xany.display;
927 struct device *d = get_device_from_display (display);
928 struct x_device *xd = DEVICE_X_DATA (d);
930 if (DEVICE_X_BEING_DELETED (d))
931 /* #### Uh, is this 0 correct? */
934 set_last_server_timestamp (d, x_event);
936 switch (x_event->type)
939 x_handle_sticky_modifiers (x_event, d);
946 unsigned int modifiers = 0;
948 Bool key_event_p = (x_event->type == KeyPress);
949 unsigned int *state =
950 key_event_p ? &x_event->xkey.state : &x_event->xbutton.state;
952 /* If this is a synthetic KeyPress or Button event, and the user
953 has expressed a disinterest in this security hole, then drop
956 ? x_event->xkey.send_event
957 : x_event->xbutton.send_event)
958 #ifdef EXTERNAL_WIDGET
959 /* ben: events get sent to an ExternalShell using XSendEvent.
960 This is not a perfect solution. */
961 && !FRAME_X_EXTERNAL_WINDOW_P
962 (x_any_window_to_frame (d, x_event->xany.window))
964 && !x_allow_sendevents)
967 DEVICE_X_MOUSE_TIMESTAMP (d) =
968 DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d) =
969 key_event_p ? x_event->xkey.time : x_event->xbutton.time;
971 x_handle_sticky_modifiers (x_event, d);
973 if (*state & ControlMask) modifiers |= MOD_CONTROL;
974 if (*state & xd->MetaMask) modifiers |= MOD_META;
975 if (*state & xd->SuperMask) modifiers |= MOD_SUPER;
976 if (*state & xd->HyperMask) modifiers |= MOD_HYPER;
977 if (*state & xd->AltMask) modifiers |= MOD_ALT;
979 /* Ignore the Caps_Lock key if:
980 - any other modifiers are down, so that Caps_Lock doesn't
981 turn C-x into C-X, which would suck.
982 - the event was a mouse event. */
983 if (modifiers || ! key_event_p)
984 *state &= (~LockMask);
986 shift_p = *state & ShiftMask;
987 lock_p = *state & LockMask;
989 if (shift_p || lock_p)
990 modifiers |= MOD_SHIFT;
995 XKeyEvent *ev = &x_event->xkey;
996 /* This used to compute the frame from the given X window and
997 store it here, but we really don't care about the frame. */
998 emacs_event->channel = DEVICE_CONSOLE (d);
999 keysym = x_to_emacs_keysym (&x_event->xkey, 0);
1001 /* If the emacs keysym is nil, then that means that the X
1002 keysym was either a Modifier or NoSymbol, which
1003 probably means that we're in the midst of reading a
1004 Multi_key sequence, or a "dead" key prefix, or XIM
1005 input. Ignore it. */
1009 /* More Caps_Lock garbage: Caps_Lock should *only* add the
1010 shift modifier to two-case keys (that is, A-Z and
1011 related characters). So at this point (after looking up
1012 the keysym) if the keysym isn't a dual-case alphabetic,
1013 and if the caps lock key was down but the shift key
1014 wasn't, then turn off the shift modifier. Gag barf */
1015 /* #### type lossage: assuming equivalence of emacs and
1017 /* !!#### maybe fix for Mule */
1018 if (lock_p && !shift_p &&
1019 ! (CHAR_OR_CHAR_INTP (keysym)
1020 && keysym_obeys_caps_lock_p
1021 ((KeySym) XCHAR_OR_CHAR_INT (keysym), d)))
1022 modifiers &= (~MOD_SHIFT);
1024 /* If this key contains two distinct keysyms, that is,
1025 "shift" generates a different keysym than the
1026 non-shifted key, then don't apply the shift modifier
1027 bit: it's implicit. Otherwise, if there would be no
1028 other way to tell the difference between the shifted
1029 and unshifted version of this key, apply the shift bit.
1030 Non-graphics, like Backspace and F1 get the shift bit
1031 in the modifiers slot. Neither the characters "a",
1032 "A", "2", nor "@" normally have the shift bit set.
1033 However, "F1" normally does. */
1034 if (modifiers & MOD_SHIFT)
1036 int Mode_switch_p = *state & xd->ModeMask;
1037 KeySym bot = XLookupKeysym (ev, Mode_switch_p ? 2 : 0);
1038 KeySym top = XLookupKeysym (ev, Mode_switch_p ? 3 : 1);
1039 if (top && bot && top != bot)
1040 modifiers &= ~MOD_SHIFT;
1042 emacs_event->event_type = key_press_event;
1043 emacs_event->timestamp = ev->time;
1044 emacs_event->event.key.modifiers = modifiers;
1045 emacs_event->event.key.keysym = keysym;
1047 else /* Mouse press/release event */
1049 XButtonEvent *ev = &x_event->xbutton;
1050 struct frame *frame = x_window_to_frame (d, ev->window);
1053 return 0; /* not for us */
1054 XSETFRAME (emacs_event->channel, frame);
1056 emacs_event->event_type = (x_event->type == ButtonPress) ?
1057 button_press_event : button_release_event;
1059 emacs_event->event.button.modifiers = modifiers;
1060 emacs_event->timestamp = ev->time;
1061 emacs_event->event.button.button = ev->button;
1062 emacs_event->event.button.x = ev->x;
1063 emacs_event->event.button.y = ev->y;
1064 /* because we don't seem to get a FocusIn event for button clicks
1065 when a widget-glyph is selected we will assume that we want the
1066 focus if a button gets pressed. */
1067 if (x_event->type == ButtonPress)
1068 handle_focus_event_1 (frame, 1);
1075 XMotionEvent *ev = &x_event->xmotion;
1076 struct frame *frame = x_window_to_frame (d, ev->window);
1077 unsigned int modifiers = 0;
1078 XMotionEvent event2;
1081 return 0; /* not for us */
1083 /* We use MotionHintMask, so we will get only one motion event
1084 until the next time we call XQueryPointer or the user
1085 clicks the mouse. So call XQueryPointer now (meaning that
1086 the event will be in sync with the server just before
1087 Fnext_event() returns). If the mouse is still in motion,
1088 then the server will immediately generate exactly one more
1089 motion event, which will be on the queue waiting for us
1090 next time around. */
1092 if (XQueryPointer (event2.display, event2.window,
1093 &event2.root, &event2.subwindow,
1094 &event2.x_root, &event2.y_root,
1095 &event2.x, &event2.y,
1097 ev = &event2; /* only one structure copy */
1099 DEVICE_X_MOUSE_TIMESTAMP (d) = ev->time;
1101 XSETFRAME (emacs_event->channel, frame);
1102 emacs_event->event_type = pointer_motion_event;
1103 emacs_event->timestamp = ev->time;
1104 emacs_event->event.motion.x = ev->x;
1105 emacs_event->event.motion.y = ev->y;
1106 if (ev->state & ShiftMask) modifiers |= MOD_SHIFT;
1107 if (ev->state & ControlMask) modifiers |= MOD_CONTROL;
1108 if (ev->state & xd->MetaMask) modifiers |= MOD_META;
1109 if (ev->state & xd->SuperMask) modifiers |= MOD_SUPER;
1110 if (ev->state & xd->HyperMask) modifiers |= MOD_HYPER;
1111 if (ev->state & xd->AltMask) modifiers |= MOD_ALT;
1112 /* Currently ignores Shift_Lock but probably shouldn't
1113 (but it definitely should ignore Caps_Lock). */
1114 emacs_event->event.motion.modifiers = modifiers;
1120 /* Patch bogus TAKE_FOCUS messages from MWM; CurrentTime is
1121 passed as the timestamp of the TAKE_FOCUS, which the ICCCM
1122 explicitly prohibits. */
1123 XClientMessageEvent *ev = &x_event->xclient;
1124 #ifdef HAVE_OFFIX_DND
1125 if (DndIsDropMessage(x_event))
1127 unsigned int state, modifiers = 0, button=0;
1128 struct frame *frame = x_any_window_to_frame (d, ev->window);
1130 unsigned long size, dtype;
1131 Lisp_Object l_type = Qnil, l_data = Qnil;
1132 Lisp_Object l_dndlist = Qnil, l_item = Qnil;
1133 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
1135 GCPRO4 (l_type, l_data, l_dndlist, l_item);
1138 return 0; /* not for us */
1139 XSETFRAME (emacs_event->channel, frame);
1141 emacs_event->event_type = misc_user_event;
1142 emacs_event->timestamp = DEVICE_X_LAST_SERVER_TIMESTAMP (d);
1144 state=DndDragButtons(x_event);
1146 if (state & ShiftMask) modifiers |= MOD_SHIFT;
1147 if (state & ControlMask) modifiers |= MOD_CONTROL;
1148 if (state & xd->MetaMask) modifiers |= MOD_META;
1149 if (state & xd->SuperMask) modifiers |= MOD_SUPER;
1150 if (state & xd->HyperMask) modifiers |= MOD_HYPER;
1151 if (state & xd->AltMask) modifiers |= MOD_ALT;
1153 if (state & Button5Mask) button = Button5;
1154 if (state & Button4Mask) button = Button4;
1155 if (state & Button3Mask) button = Button3;
1156 if (state & Button2Mask) button = Button2;
1157 if (state & Button1Mask) button = Button1;
1159 emacs_event->event.misc.modifiers = modifiers;
1160 emacs_event->event.misc.button = button;
1162 DndDropCoordinates(FRAME_X_TEXT_WIDGET(frame), x_event,
1163 &(emacs_event->event.misc.x),
1164 &(emacs_event->event.misc.y) );
1166 DndGetData(x_event,&data,&size);
1168 dtype=DndDataType(x_event);
1171 case DndFiles: /* null terminated strings, end null */
1178 len = strlen ((char*)data);
1179 hurl = dnd_url_hexify_string ((char *)data, "file:");
1180 l_item = make_string ((Bufbyte *)hurl, strlen (hurl));
1181 l_dndlist = Fcons (l_item, l_dndlist);
1185 l_type = Qdragdrop_URL;
1189 l_type = Qdragdrop_MIME;
1190 l_dndlist = list1 ( list3 ( list1 ( make_string ((Bufbyte *)"text/plain", 10) ),
1191 make_string ((Bufbyte *)"8bit", 4),
1192 make_ext_string ((Extbyte *)data,
1193 strlen((char *)data),
1197 /* we have to parse this in some way to extract
1198 content-type and params (in the tm way) and
1200 OR: if data is string, let tm do the job
1201 if data is list[2], give the first two
1204 l_type = Qdragdrop_MIME;
1205 l_dndlist = list1 ( make_ext_string ((Extbyte *)data,
1206 strlen((char *)data),
1214 char *hurl = dnd_url_hexify_string ((char *) data, "file:");
1216 l_dndlist = list1 ( make_string ((Bufbyte *)hurl,
1218 l_type = Qdragdrop_URL;
1224 /* as it is a real URL it should already be escaped
1225 and escaping again will break them (cause % is unsave) */
1226 l_dndlist = list1 ( make_ext_string ((Extbyte *)data,
1227 strlen ((char *)data),
1229 l_type = Qdragdrop_URL;
1231 default: /* Unknown, RawData and any other type */
1232 l_dndlist = list1 ( list3 ( list1 ( make_string ((Bufbyte *)"application/octet-stream", 24) ),
1233 make_string ((Bufbyte *)"8bit", 4),
1234 make_ext_string ((Extbyte *)data,
1237 l_type = Qdragdrop_MIME;
1241 emacs_event->event.misc.function = Qdragdrop_drop_dispatch;
1242 emacs_event->event.misc.object = Fcons (l_type, l_dndlist);
1248 #endif /* HAVE_OFFIX_DND */
1249 if (ev->message_type == DEVICE_XATOM_WM_PROTOCOLS (d)
1250 && (Atom) (ev->data.l[0]) == DEVICE_XATOM_WM_TAKE_FOCUS (d)
1251 && (Atom) (ev->data.l[1]) == 0)
1253 ev->data.l[1] = DEVICE_X_LAST_SERVER_TIMESTAMP (d);
1258 default: /* it's a magic event */
1260 struct frame *frame;
1262 XEvent *x_event_copy = &emacs_event->event.magic.underlying_x_event;
1264 #define FROB(event_member, window_member) \
1265 x_event_copy->event_member = x_event->event_member; \
1266 w = x_event->event_member.window_member
1268 switch (x_event->type)
1270 case SelectionRequest: FROB(xselectionrequest, owner); break;
1271 case SelectionClear: FROB(xselectionclear, window); break;
1272 case SelectionNotify: FROB(xselection, requestor); break;
1273 case PropertyNotify: FROB(xproperty, window); break;
1274 case ClientMessage: FROB(xclient, window); break;
1275 case ConfigureNotify: FROB(xconfigure, window); break;
1277 case GraphicsExpose: FROB(xexpose, window); break;
1279 case UnmapNotify: FROB(xmap, window); break;
1281 case LeaveNotify: FROB(xcrossing, window); break;
1283 case FocusOut: FROB(xfocus, window); break;
1284 case VisibilityNotify: FROB(xvisibility, window); break;
1286 w = x_event->xany.window;
1287 *x_event_copy = *x_event;
1291 frame = x_any_window_to_frame (d, w);
1296 emacs_event->event_type = magic_event;
1297 XSETFRAME (emacs_event->channel, frame);
1307 /************************************************************************/
1308 /* magic-event handling */
1309 /************************************************************************/
1312 handle_focus_event_1 (struct frame *f, int in_p)
1314 #if XtSpecificationRelease > 5
1315 Widget focus_widget = XtGetKeyboardFocusWidget (FRAME_X_TEXT_WIDGET (f));
1318 XIM_focus_event (f, in_p);
1319 #endif /* HAVE_XIM */
1321 /* On focus change, clear all memory of sticky modifiers
1322 to avoid non-intuitive behavior. */
1323 clear_sticky_modifiers (XDEVICE (FRAME_DEVICE (f)));
1325 /* We don't want to handle the focus change now, because we might
1326 be in an accept-process-output, sleep-for, or sit-for. So
1329 Actually, we half handle it: we handle it as far as changing the
1330 box cursor for redisplay, but we don't call any hooks or do any
1331 select-frame stuff until after the sit-for.
1333 Unfortunately native widgets break the model because they grab
1334 the keyboard focus and nothing sets it back again. I cannot find
1335 any reasonable way to do this elsewhere so we assert here that
1336 the keyboard focus is on the emacs text widget. Menus and dialogs
1337 do this in their selection callback, but we don't want that since
1338 a button having focus is legitimate. An edit field having focus
1339 is mandatory. Weirdly you get a FocusOut event when you click in
1340 a widget-glyph but you don't get a correspondng FocusIn when you
1341 click in the frame. Why is this? */
1343 #if XtSpecificationRelease > 5
1344 && FRAME_X_TEXT_WIDGET (f) != focus_widget
1348 lw_set_keyboard_focus (FRAME_X_SHELL_WIDGET (f),
1349 FRAME_X_TEXT_WIDGET (f));
1351 /* do the generic event-stream stuff. */
1355 struct gcpro gcpro1;
1358 conser = Fcons (frm, Fcons (FRAME_DEVICE (f), in_p ? Qt : Qnil));
1360 emacs_handle_focus_change_preliminary (conser);
1361 enqueue_magic_eval_event (emacs_handle_focus_change_final,
1367 /* This is called from the external-widget code */
1369 void emacs_Xt_handle_focus_event (XEvent *event);
1371 emacs_Xt_handle_focus_event (XEvent *event)
1373 struct device *d = get_device_from_display (event->xany.display);
1376 if (DEVICE_X_BEING_DELETED (d))
1380 * It's curious that we're using x_any_window_to_frame() instead
1381 * of x_window_to_frame(). I don't know what the impact of this is.
1383 f = x_any_window_to_frame (d, event->xfocus.window);
1385 /* focus events are sometimes generated just before
1386 a frame is destroyed. */
1388 handle_focus_event_1 (f, event->type == FocusIn);
1391 /* both MapNotify and VisibilityNotify can cause this
1392 JV is_visible has the same semantics as f->visible*/
1394 change_frame_visibility (struct frame *f, int is_visible)
1398 XSETFRAME (frame, f);
1400 if (!FRAME_VISIBLE_P (f) && is_visible)
1402 FRAME_VISIBLE_P (f) = is_visible;
1403 /* This improves the double flicker when uniconifying a frame
1404 some. A lot of it is not showing a buffer which has changed
1405 while the frame was iconified. To fix it further requires
1406 the good 'ol double redisplay structure. */
1407 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f);
1408 va_run_hook_with_args (Qmap_frame_hook, 1, frame);
1410 else if (FRAME_VISIBLE_P (f) && !is_visible)
1412 FRAME_VISIBLE_P (f) = 0;
1413 va_run_hook_with_args (Qunmap_frame_hook, 1, frame);
1415 else if (FRAME_VISIBLE_P (f) * is_visible < 0)
1417 FRAME_VISIBLE_P(f) = - FRAME_VISIBLE_P(f);
1418 if (FRAME_REPAINT_P(f))
1419 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f);
1420 va_run_hook_with_args (Qmap_frame_hook, 1, frame);
1425 handle_map_event (struct frame *f, XEvent *event)
1429 XSETFRAME (frame, f);
1430 if (event->type == MapNotify)
1432 XWindowAttributes xwa;
1434 /* Bleagh!!!!!! Apparently some window managers (e.g. MWM)
1435 send synthetic MapNotify events when a window is first
1436 created, EVEN IF IT'S CREATED ICONIFIED OR INVISIBLE.
1437 Or something like that. We initially tried a different
1438 solution below, but that ran into a different window-
1441 It seems that the only reliable way is to treat a
1442 MapNotify event as a "hint" that the window might or
1443 might not be visible, and check explicitly. */
1445 XGetWindowAttributes (event->xany.display, event->xmap.window,
1447 if (xwa.map_state != IsViewable)
1449 /* Calling Fframe_iconified_p is the only way we have to
1450 correctly update FRAME_ICONIFIED_P */
1451 Fframe_iconified_p (frame);
1455 FRAME_X_TOTALLY_VISIBLE_P (f) = 1;
1457 /* Bleagh again!!!! We initially tried the following hack
1458 around the MWM problem, but it turns out that TWM
1459 has a race condition when you un-iconify, where it maps
1460 the window and then tells the server that the window
1461 is un-iconified. Usually, XEmacs wakes up between
1462 those two occurrences, and thus thinks that un-iconified
1463 windows are still iconified.
1465 Ah, the joys of X. */
1467 /* By Emacs definition, a frame that is iconified is not
1468 visible. Marking a frame as visible will automatically cause
1469 frame-iconified-p to return nil, regardless of whether the
1470 frame is actually iconified. Therefore, we have to ignore
1471 MapNotify events on iconified frames. (It's not obvious
1472 to me why these are being sent, but it happens at startup
1473 with frames that are initially iconified; perhaps they are
1474 synthetic MapNotify events coming from the window manager.)
1475 Note that `frame-iconified-p' queries the server
1476 to determine whether the frame is currently iconified,
1477 rather than consulting some internal (and likely
1478 inaccurate) state flag. Therefore, ignoring the MapNotify
1480 if (!FRAME_VISIBLE_P (f) && NILP (Fframe_iconified_p (frame)))
1482 change_frame_visibility (f, 1);
1486 FRAME_X_TOTALLY_VISIBLE_P (f) = 0;
1487 change_frame_visibility (f, 0);
1488 /* Calling Fframe_iconified_p is the only way we have to
1489 correctly update FRAME_ICONIFIED_P */
1490 Fframe_iconified_p (frame);
1495 handle_client_message (struct frame *f, XEvent *event)
1497 struct device *d = XDEVICE (FRAME_DEVICE (f));
1500 XSETFRAME (frame, f);
1502 if (event->xclient.message_type == DEVICE_XATOM_WM_PROTOCOLS (d) &&
1503 (Atom) (event->xclient.data.l[0]) == DEVICE_XATOM_WM_DELETE_WINDOW (d))
1505 /* WM_DELETE_WINDOW is a misc-user event, but other ClientMessages,
1506 such as WM_TAKE_FOCUS, are eval events. That's because delete-window
1507 was probably executed with a mouse click, while the others could
1508 have been sent as a result of mouse motion or some other implicit
1509 action. (Call this a "heuristic"...) The reason for caring about
1510 this is so that clicking on the close-box will make emacs prompt
1511 using a dialog box instead of the minibuffer if there are unsaved
1514 enqueue_misc_user_event (frame, Qeval,
1515 list3 (Qdelete_frame, frame, Qt));
1517 else if (event->xclient.message_type == DEVICE_XATOM_WM_PROTOCOLS (d) &&
1518 (Atom) event->xclient.data.l[0] == DEVICE_XATOM_WM_TAKE_FOCUS (d))
1520 handle_focus_event_1 (f, 1);
1522 /* If there is a dialog box up, focus on it.
1524 #### Actually, we're raising it too, which is wrong. We should
1525 #### just focus on it, but lwlib doesn't currently give us an
1526 #### easy way to do that. This should be fixed.
1528 unsigned long take_focus_timestamp = event->xclient.data.l[1];
1529 Widget widget = lw_raise_all_pop_up_widgets ();
1532 /* kludge: raise_all returns bottommost widget, but we really
1533 want the topmost. So just raise it for now. */
1534 XMapRaised (XtDisplay (widget), XtWindow (widget));
1535 /* Grab the focus with the timestamp of the TAKE_FOCUS. */
1536 XSetInputFocus (XtDisplay (widget), XtWindow (widget),
1537 RevertToParent, take_focus_timestamp);
1544 emacs_Xt_handle_magic_event (struct Lisp_Event *emacs_event)
1546 /* This function can GC */
1547 XEvent *event = &emacs_event->event.magic.underlying_x_event;
1548 struct frame *f = XFRAME (EVENT_CHANNEL (emacs_event));
1550 if (!FRAME_LIVE_P (f) || DEVICE_X_BEING_DELETED (XDEVICE (FRAME_DEVICE (f))))
1553 switch (event->type)
1555 case SelectionRequest:
1556 x_handle_selection_request (&event->xselectionrequest);
1559 case SelectionClear:
1560 x_handle_selection_clear (&event->xselectionclear);
1563 case SelectionNotify:
1564 x_handle_selection_notify (&event->xselection);
1567 case PropertyNotify:
1568 x_handle_property_notify (&event->xproperty);
1572 if (!check_for_ignored_expose (f, event->xexpose.x, event->xexpose.y,
1573 event->xexpose.width, event->xexpose.height)
1575 !find_matching_subwindow (f, event->xexpose.x, event->xexpose.y,
1576 event->xexpose.width, event->xexpose.height))
1577 x_redraw_exposed_area (f, event->xexpose.x, event->xexpose.y,
1578 event->xexpose.width, event->xexpose.height);
1581 case GraphicsExpose: /* This occurs when an XCopyArea's source area was
1582 obscured or not available. */
1583 x_redraw_exposed_area (f, event->xexpose.x, event->xexpose.y,
1584 event->xexpose.width, event->xexpose.height);
1589 handle_map_event (f, event);
1593 if (event->xcrossing.detail != NotifyInferior)
1597 XSETFRAME (frame, f);
1598 /* FRAME_X_MOUSE_P (f) = 1; */
1599 va_run_hook_with_args (Qmouse_enter_frame_hook, 1, frame);
1604 if (event->xcrossing.detail != NotifyInferior)
1608 XSETFRAME (frame, f);
1609 /* FRAME_X_MOUSE_P (f) = 0; */
1610 va_run_hook_with_args (Qmouse_leave_frame_hook, 1, frame);
1617 #ifdef EXTERNAL_WIDGET
1618 /* External widget lossage: Ben said:
1619 YUCK. The only way to make focus changes work properly is to
1620 completely ignore all FocusIn/FocusOut events and depend only
1621 on notifications from the ExternalClient widget. */
1622 if (FRAME_X_EXTERNAL_WINDOW_P (f))
1625 handle_focus_event_1 (f, event->type == FocusIn);
1629 handle_client_message (f, event);
1632 case VisibilityNotify: /* window visibility has changed */
1633 if (event->xvisibility.window == XtWindow (FRAME_X_SHELL_WIDGET (f)))
1635 FRAME_X_TOTALLY_VISIBLE_P (f) =
1636 (event->xvisibility.state == VisibilityUnobscured);
1637 /* Note that the fvwm pager only sends VisibilityNotify when
1638 changing pages. Is this all we need to do ? JV */
1639 /* Nope. We must at least trigger a redisplay here.
1640 Since this case seems similar to MapNotify, I've
1641 factored out some code to change_frame_visibility().
1642 This triggers the necessary redisplay and runs
1643 (un)map-frame-hook. - dkindred@cs.cmu.edu */
1644 /* Changed it again to support the tristate visibility flag */
1645 change_frame_visibility (f, (event->xvisibility.state
1646 != VisibilityFullyObscured) ? 1 : -1);
1650 case ConfigureNotify:
1652 XIM_SetGeometry (f);
1662 /************************************************************************/
1663 /* timeout events */
1664 /************************************************************************/
1666 static int timeout_id_tick;
1668 /* Xt interval id's might not fit into an int (they're pointers, as it
1669 happens), so we need to provide a conversion list. */
1671 static struct Xt_timeout
1674 XtIntervalId interval_id;
1675 struct Xt_timeout *next;
1676 } *pending_timeouts, *completed_timeouts;
1678 static struct Xt_timeout_blocktype
1680 Blocktype_declare (struct Xt_timeout);
1681 } *the_Xt_timeout_blocktype;
1683 /* called by XtAppNextEvent() */
1685 Xt_timeout_callback (XtPointer closure, XtIntervalId *id)
1687 struct Xt_timeout *timeout = (struct Xt_timeout *) closure;
1688 struct Xt_timeout *t2 = pending_timeouts;
1689 /* Remove this one from the list of pending timeouts */
1691 pending_timeouts = pending_timeouts->next;
1694 while (t2->next && t2->next != timeout) t2 = t2->next;
1696 t2->next = t2->next->next;
1698 /* Add this one to the list of completed timeouts */
1699 timeout->next = completed_timeouts;
1700 completed_timeouts = timeout;
1704 emacs_Xt_add_timeout (EMACS_TIME thyme)
1706 struct Xt_timeout *timeout = Blocktype_alloc (the_Xt_timeout_blocktype);
1707 EMACS_TIME current_time;
1710 timeout->id = timeout_id_tick++;
1711 timeout->next = pending_timeouts;
1712 pending_timeouts = timeout;
1713 EMACS_GET_TIME (current_time);
1714 EMACS_SUB_TIME (thyme, thyme, current_time);
1715 milliseconds = EMACS_SECS (thyme) * 1000 +
1716 EMACS_USECS (thyme) / 1000;
1717 if (milliseconds < 1)
1719 timeout->interval_id = XtAppAddTimeOut (Xt_app_con, milliseconds,
1720 Xt_timeout_callback,
1721 (XtPointer) timeout);
1726 emacs_Xt_remove_timeout (int id)
1728 struct Xt_timeout *timeout, *t2;
1732 /* Find the timeout on the list of pending ones, if it's still there. */
1733 if (pending_timeouts)
1735 if (id == pending_timeouts->id)
1737 timeout = pending_timeouts;
1738 pending_timeouts = pending_timeouts->next;
1742 t2 = pending_timeouts;
1743 while (t2->next && t2->next->id != id) t2 = t2->next;
1744 if ( t2->next) /*found it */
1747 t2->next = t2->next->next;
1750 /* if it was pending, we have removed it from the list */
1752 XtRemoveTimeOut (timeout->interval_id);
1755 /* It could be that the Xt call back was already called but we didn't convert
1756 into an Emacs event yet */
1757 if (!timeout && completed_timeouts)
1759 /* Code duplication! */
1760 if (id == completed_timeouts->id)
1762 timeout = completed_timeouts;
1763 completed_timeouts = completed_timeouts->next;
1767 t2 = completed_timeouts;
1768 while (t2->next && t2->next->id != id) t2 = t2->next;
1769 if ( t2->next) /*found it */
1772 t2->next = t2->next->next;
1777 /* If we found the thing on the lists of timeouts,
1778 and removed it, deallocate
1781 Blocktype_free (the_Xt_timeout_blocktype, timeout);
1785 Xt_timeout_to_emacs_event (struct Lisp_Event *emacs_event)
1787 struct Xt_timeout *timeout = completed_timeouts;
1789 completed_timeouts = completed_timeouts->next;
1790 emacs_event->event_type = timeout_event;
1791 /* timeout events have nil as channel */
1792 emacs_event->timestamp = 0; /* #### wrong!! */
1793 emacs_event->event.timeout.interval_id = timeout->id;
1794 emacs_event->event.timeout.function = Qnil;
1795 emacs_event->event.timeout.object = Qnil;
1796 Blocktype_free (the_Xt_timeout_blocktype, timeout);
1800 /************************************************************************/
1801 /* process and tty events */
1802 /************************************************************************/
1804 struct what_is_ready_closure
1811 static Lisp_Object *filedesc_with_input;
1812 static struct what_is_ready_closure **filedesc_to_what_closure;
1815 init_what_input_once (void)
1819 filedesc_with_input = xnew_array (Lisp_Object, MAXDESC);
1820 filedesc_to_what_closure =
1821 xnew_array (struct what_is_ready_closure *, MAXDESC);
1823 for (i = 0; i < MAXDESC; i++)
1825 filedesc_to_what_closure[i] = 0;
1826 filedesc_with_input[i] = Qnil;
1829 process_events_occurred = 0;
1830 tty_events_occurred = 0;
1834 mark_what_as_being_ready (struct what_is_ready_closure *closure)
1836 if (NILP (filedesc_with_input[closure->fd]))
1838 SELECT_TYPE temp_mask;
1839 FD_ZERO (&temp_mask);
1840 FD_SET (closure->fd, &temp_mask);
1841 /* Check to make sure there's *really* input available.
1842 Sometimes things seem to get confused and this gets called
1843 for the tty fd when there's really only input available
1844 on some process's fd. (It will subsequently get called
1845 for that process's fd, so returning without setting any
1846 flags will take care of it.) To see the problem, uncomment
1847 the stderr_out below, turn NORMAL_QUIT_CHECK_TIMEOUT_MSECS
1848 down to 25, do sh -c 'xemacs -nw -q -f shell 2>/tmp/log'
1849 and press return repeatedly. (Seen under AIX & Linux.)
1850 -dkindred@cs.cmu.edu */
1851 if (!poll_fds_for_input (temp_mask))
1854 stderr_out ("mark_what_as_being_ready: no input available (fd=%d)\n",
1859 filedesc_with_input[closure->fd] = closure->what;
1860 if (PROCESSP (closure->what))
1861 /* Don't increment this if the current process is already marked
1862 * as having input. */
1863 process_events_occurred++;
1865 tty_events_occurred++;
1870 Xt_what_callback (void *closure, int *source, XtInputId *id)
1872 /* If closure is 0, then we got a fake event from a signal handler.
1873 The only purpose of this is to make XtAppProcessEvent() stop
1876 mark_what_as_being_ready ((struct what_is_ready_closure *) closure);
1879 fake_event_occurred++;
1880 drain_signal_event_pipe ();
1885 select_filedesc (int fd, Lisp_Object what)
1887 struct what_is_ready_closure *closure;
1889 /* If somebody is trying to select something that's already selected
1890 for, then something went wrong. The generic routines ought to
1891 detect this and error before here. */
1892 assert (!filedesc_to_what_closure[fd]);
1894 closure = xnew (struct what_is_ready_closure);
1896 closure->what = what;
1898 XtAppAddInput (Xt_app_con, fd,
1899 (XtPointer) (XtInputReadMask /* | XtInputExceptMask */),
1900 Xt_what_callback, closure);
1901 filedesc_to_what_closure[fd] = closure;
1905 unselect_filedesc (int fd)
1907 struct what_is_ready_closure *closure = filedesc_to_what_closure[fd];
1910 if (!NILP (filedesc_with_input[fd]))
1912 /* We are unselecting this process before we have drained the rest of
1913 the input from it, probably from status_notify() in the command loop.
1914 This can happen like so:
1916 - We are waiting in XtAppNextEvent()
1917 - Process generates output
1918 - Process is marked as being ready
1919 - Process dies, SIGCHLD gets generated before we return (!?)
1920 It could happen I guess.
1921 - sigchld_handler() marks process as dead
1922 - Somehow we end up getting a new KeyPress event on the queue
1923 at the same time (I'm really so sure how that happens but I'm
1924 not sure it can't either so let's assume it can...).
1925 - Key events have priority so we return that instead of the proc.
1926 - Before dispatching the lisp key event we call status_notify()
1927 - Which deselects the process that SIGCHLD marked as dead.
1929 Thus we never remove it from _with_input and turn it into a lisp
1930 event, so we need to do it here. But this does not mean that we're
1931 throwing away the last block of output - status_notify() has already
1932 taken care of running the proc filter or whatever.
1934 filedesc_with_input[fd] = Qnil;
1935 if (PROCESSP (closure->what))
1937 assert (process_events_occurred > 0);
1938 process_events_occurred--;
1942 assert (tty_events_occurred > 0);
1943 tty_events_occurred--;
1946 XtRemoveInput (closure->id);
1948 filedesc_to_what_closure[fd] = 0;
1952 emacs_Xt_select_process (struct Lisp_Process *p)
1954 Lisp_Object process;
1955 int infd = event_stream_unixoid_select_process (p);
1957 XSETPROCESS (process, p);
1958 select_filedesc (infd, process);
1962 emacs_Xt_unselect_process (struct Lisp_Process *p)
1964 int infd = event_stream_unixoid_unselect_process (p);
1966 unselect_filedesc (infd);
1970 emacs_Xt_create_stream_pair (void* inhandle, void* outhandle,
1971 Lisp_Object* instream, Lisp_Object* outstream, int flags)
1973 USID u = event_stream_unixoid_create_stream_pair
1974 (inhandle, outhandle, instream, outstream, flags);
1975 if (u != USID_ERROR)
1981 emacs_Xt_delete_stream_pair (Lisp_Object instream, Lisp_Object outstream)
1983 event_stream_unixoid_delete_stream_pair (instream, outstream);
1984 return USID_DONTHASH;
1987 /* This is called from GC when a process object is about to be freed.
1988 If we've still got pointers to it in this file, we're gonna lose hard.
1991 debug_process_finalization (struct Lisp_Process *p)
1995 Lisp_Object instr, outstr;
1997 get_process_streams (p, &instr, &outstr);
1998 /* if it still has fds, then it hasn't been killed yet. */
1999 assert (NILP(instr));
2000 assert (NILP(outstr));
2001 /* Better not still be in the "with input" table; we know it's got no fds. */
2002 for (i = 0; i < MAXDESC; i++)
2004 Lisp_Object process = filedesc_fds_with_input [i];
2005 assert (!PROCESSP (process) || XPROCESS (process) != p);
2011 Xt_process_to_emacs_event (struct Lisp_Event *emacs_event)
2015 assert (process_events_occurred > 0);
2017 for (i = 0; i < MAXDESC; i++)
2019 Lisp_Object process = filedesc_with_input[i];
2020 if (PROCESSP (process))
2022 filedesc_with_input[i] = Qnil;
2023 process_events_occurred--;
2024 /* process events have nil as channel */
2025 emacs_event->event_type = process_event;
2026 emacs_event->timestamp = 0; /* #### */
2027 emacs_event->event.process.process = process;
2035 emacs_Xt_select_console (struct console *con)
2037 Lisp_Object console;
2040 if (CONSOLE_X_P (con))
2041 return; /* X consoles are automatically selected for when we
2042 initialize them in Xt */
2043 infd = event_stream_unixoid_select_console (con);
2044 XSETCONSOLE (console, con);
2045 select_filedesc (infd, console);
2049 emacs_Xt_unselect_console (struct console *con)
2051 Lisp_Object console;
2054 if (CONSOLE_X_P (con))
2055 return; /* X consoles are automatically selected for when we
2056 initialize them in Xt */
2057 infd = event_stream_unixoid_unselect_console (con);
2058 XSETCONSOLE (console, con);
2059 unselect_filedesc (infd);
2062 /* read an event from a tty, if one is available. Returns non-zero
2063 if an event was available. Note that when this function is
2064 called, there should always be a tty marked as ready for input.
2065 However, the input condition might actually be EOF, so there
2066 may not really be any input available. (In this case,
2067 read_event_from_tty_or_stream_desc() will arrange for the TTY device
2071 Xt_tty_to_emacs_event (struct Lisp_Event *emacs_event)
2075 assert (tty_events_occurred > 0);
2076 for (i = 0; i < MAXDESC; i++)
2078 Lisp_Object console = filedesc_with_input[i];
2079 if (CONSOLEP (console))
2081 assert (tty_events_occurred > 0);
2082 tty_events_occurred--;
2083 filedesc_with_input[i] = Qnil;
2084 if (read_event_from_tty_or_stream_desc
2085 (emacs_event, XCONSOLE (console), i))
2094 /************************************************************************/
2095 /* debugging functions to decipher an event */
2096 /************************************************************************/
2099 #include "xintrinsicp.h" /* only describe_event() needs this */
2100 #include <X11/Xproto.h> /* only describe_event() needs this */
2103 describe_event_window (Window window, Display *display)
2107 stderr_out (" window: 0x%lx", (unsigned long) window);
2108 w = XtWindowToWidget (display, window);
2110 stderr_out (" %s", w->core.widget_class->core_class.class_name);
2111 f = x_any_window_to_frame (get_device_from_display (display), window);
2114 char *buf = alloca_array (char, XSTRING_LENGTH (f->name) + 4);
2115 sprintf (buf, " \"%s\"", XSTRING_DATA (f->name));
2116 write_string_to_stdio_stream (stderr, 0, (Bufbyte *) buf, 0,
2117 strlen (buf), FORMAT_TERMINAL);
2123 XEvent_mode_to_string (int mode)
2127 case NotifyNormal: return "Normal";
2128 case NotifyGrab: return "Grab";
2129 case NotifyUngrab: return "Ungrab";
2130 case NotifyWhileGrabbed: return "WhileGrabbed";
2131 default: return "???";
2136 XEvent_detail_to_string (int detail)
2140 case NotifyAncestor: return "Ancestor";
2141 case NotifyInferior: return "Inferior";
2142 case NotifyNonlinear: return "Nonlinear";
2143 case NotifyNonlinearVirtual: return "NonlinearVirtual";
2144 case NotifyPointer: return "Pointer";
2145 case NotifyPointerRoot: return "PointerRoot";
2146 case NotifyDetailNone: return "DetailNone";
2147 default: return "???";
2152 XEvent_visibility_to_string (int state)
2156 case VisibilityFullyObscured: return "FullyObscured";
2157 case VisibilityPartiallyObscured: return "PartiallyObscured";
2158 case VisibilityUnobscured: return "Unobscured";
2159 default: return "???";
2164 describe_event (XEvent *event)
2167 struct device *d = get_device_from_display (event->xany.display);
2169 sprintf (buf, "%s%s", x_event_name (event->type),
2170 event->xany.send_event ? " (send)" : "");
2171 stderr_out ("%-30s", buf);
2172 switch (event->type)
2177 XFocusChangeEvent *ev = &event->xfocus;
2178 describe_event_window (ev->window, ev->display);
2179 stderr_out (" mode: %s\n", XEvent_mode_to_string (ev->mode));
2180 stderr_out (" detail: %s\n", XEvent_detail_to_string(ev->detail));
2186 XKeyEvent *ev = &event->xkey;
2187 unsigned int state = ev->state;
2189 describe_event_window (ev->window, ev->display);
2190 stderr_out (" subwindow: %ld\n", ev->subwindow);
2191 stderr_out (" state: ");
2192 /* Complete list of modifier key masks */
2193 if (state & ShiftMask) stderr_out ("Shift ");
2194 if (state & LockMask) stderr_out ("Lock ");
2195 if (state & ControlMask) stderr_out ("Control ");
2196 if (state & Mod1Mask) stderr_out ("Mod1 ");
2197 if (state & Mod2Mask) stderr_out ("Mod2 ");
2198 if (state & Mod3Mask) stderr_out ("Mod3 ");
2199 if (state & Mod4Mask) stderr_out ("Mod4 ");
2200 if (state & Mod5Mask) stderr_out ("Mod5 ");
2203 stderr_out ("vanilla\n");
2206 if (x_key_is_modifier_p (ev->keycode, d))
2207 stderr_out (" Modifier key");
2208 stderr_out (" keycode: 0x%x\n", ev->keycode);
2213 if (x_debug_events > 1)
2215 XExposeEvent *ev = &event->xexpose;
2216 describe_event_window (ev->window, ev->display);
2217 stderr_out (" region: x=%d y=%d width=%d height=%d\n",
2218 ev->x, ev->y, ev->width, ev->height);
2219 stderr_out (" count: %d\n", ev->count);
2225 case GraphicsExpose:
2226 if (x_debug_events > 1)
2228 XGraphicsExposeEvent *ev = &event->xgraphicsexpose;
2229 describe_event_window (ev->drawable, ev->display);
2230 stderr_out (" major: %s\n",
2231 (ev ->major_code == X_CopyArea ? "CopyArea" :
2232 (ev->major_code == X_CopyPlane ? "CopyPlane" : "?")));
2233 stderr_out (" region: x=%d y=%d width=%d height=%d\n",
2234 ev->x, ev->y, ev->width, ev->height);
2235 stderr_out (" count: %d\n", ev->count);
2243 if (x_debug_events > 1)
2245 XCrossingEvent *ev = &event->xcrossing;
2246 describe_event_window (ev->window, ev->display);
2248 stderr_out(" subwindow: 0x%x\n", ev->subwindow);
2249 stderr_out(" pos: %d %d\n", ev->x, ev->y);
2250 stderr_out(" root pos: %d %d\n", ev->x_root, ev->y_root);
2252 stderr_out(" mode: %s\n", XEvent_mode_to_string(ev->mode));
2253 stderr_out(" detail: %s\n", XEvent_detail_to_string(ev->detail));
2254 stderr_out(" focus: %d\n", ev->focus);
2256 stderr_out(" state: 0x%x\n", ev->state);
2263 case ConfigureNotify:
2264 if (x_debug_events > 1)
2266 XConfigureEvent *ev = &event->xconfigure;
2267 describe_event_window (ev->window, ev->display);
2268 stderr_out(" above: 0x%lx\n", ev->above);
2269 stderr_out(" size: %d %d %d %d\n", ev->x, ev->y,
2270 ev->width, ev->height);
2271 stderr_out(" redirect: %d\n", ev->override_redirect);
2277 case VisibilityNotify:
2278 if (x_debug_events > 1)
2280 XVisibilityEvent *ev = &event->xvisibility;
2281 describe_event_window (ev->window, ev->display);
2282 stderr_out(" state: %s\n", XEvent_visibility_to_string(ev->state));
2290 XClientMessageEvent *ev = &event->xclient;
2291 char *name = XGetAtomName (ev->display, ev->message_type);
2292 stderr_out ("%s", name);
2293 if (!strcmp (name, "WM_PROTOCOLS")) {
2294 char *protname = XGetAtomName (ev->display, ev->data.l[0]);
2295 stderr_out ("(%s)", protname);
2311 #endif /* include describe_event definition */
2314 /************************************************************************/
2315 /* get the next event from Xt */
2316 /************************************************************************/
2318 static Lisp_Object dispatch_event_queue, dispatch_event_queue_tail;
2321 enqueue_Xt_dispatch_event (Lisp_Object event)
2323 enqueue_event (event, &dispatch_event_queue, &dispatch_event_queue_tail);
2327 dequeue_Xt_dispatch_event (void)
2329 return dequeue_event (&dispatch_event_queue, &dispatch_event_queue_tail);
2332 /* This business exists because menu events "happen" when
2333 menubar_selection_callback() is called from somewhere deep
2334 within XtAppProcessEvent in emacs_Xt_next_event(). The
2335 callback needs to terminate the modal loop in that function
2336 or else it will continue waiting until another event is
2339 Same business applies to scrollbar events. */
2342 signal_special_Xt_user_event (Lisp_Object channel, Lisp_Object function,
2345 Lisp_Object event = Fmake_event (Qnil, Qnil);
2347 XEVENT (event)->event_type = misc_user_event;
2348 XEVENT (event)->channel = channel;
2349 XEVENT (event)->event.eval.function = function;
2350 XEVENT (event)->event.eval.object = object;
2352 enqueue_Xt_dispatch_event (event);
2356 emacs_Xt_next_event (struct Lisp_Event *emacs_event)
2358 we_didnt_get_an_event:
2360 while (NILP (dispatch_event_queue) &&
2361 !completed_timeouts &&
2362 !fake_event_occurred &&
2363 !process_events_occurred &&
2364 !tty_events_occurred)
2367 /* Stupid logic in XtAppProcessEvent() dictates that, if process
2368 events and X events are both available, the process event gets
2369 taken first. This will cause an infinite loop if we're being
2370 called from Fdiscard_input().
2372 if (XtAppPending (Xt_app_con) & XtIMXEvent)
2373 XtAppProcessEvent (Xt_app_con, XtIMXEvent);
2376 Lisp_Object devcons, concons;
2378 /* We're about to block. Xt has a bug in it (big surprise,
2379 there) in that it blocks using select() and doesn't
2380 flush the Xlib output buffers (XNextEvent() does this
2381 automatically before blocking). So it's necessary
2382 for us to do this ourselves. If we don't do it, then
2383 display output may not be seen until the next time
2384 an X event is received. (This happens esp. with
2385 subprocess output that gets sent to a visible buffer.)
2387 #### The above comment may not have any validity. */
2389 DEVICE_LOOP_NO_BREAK (devcons, concons)
2392 d = XDEVICE (XCAR (devcons));
2394 if (DEVICE_X_P (d) && DEVICE_X_DISPLAY (d))
2395 /* emacs may be exiting */
2396 XFlush (DEVICE_X_DISPLAY (d));
2398 XtAppProcessEvent (Xt_app_con, XtIMAll);
2402 if (!NILP (dispatch_event_queue))
2404 Lisp_Object event, event2;
2405 XSETEVENT (event2, emacs_event);
2406 event = dequeue_Xt_dispatch_event ();
2407 Fcopy_event (event, event2);
2408 Fdeallocate_event (event);
2410 else if (tty_events_occurred)
2412 if (!Xt_tty_to_emacs_event (emacs_event))
2413 goto we_didnt_get_an_event;
2415 else if (completed_timeouts)
2416 Xt_timeout_to_emacs_event (emacs_event);
2417 else if (fake_event_occurred)
2419 /* A dummy event, so that a cycle of the command loop will occur. */
2420 fake_event_occurred = 0;
2421 /* eval events have nil as channel */
2422 emacs_event->event_type = eval_event;
2423 emacs_event->event.eval.function = Qidentity;
2424 emacs_event->event.eval.object = Qnil;
2426 else /* if (process_events_occurred) */
2427 Xt_process_to_emacs_event (emacs_event);
2429 /* No need to call XFilterEvent; Xt does it for us */
2433 emacs_Xt_event_handler (Widget wid /* unused */,
2434 XtPointer closure /* unused */,
2436 Boolean *continue_to_dispatch /* unused */)
2438 Lisp_Object emacs_event = Fmake_event (Qnil, Qnil);
2441 if (x_debug_events > 0)
2443 describe_event (event);
2445 #endif /* DEBUG_XEMACS */
2446 if (x_event_to_emacs_event (event, XEVENT (emacs_event)))
2447 enqueue_Xt_dispatch_event (emacs_event);
2449 Fdeallocate_event (emacs_event);
2453 /************************************************************************/
2454 /* input pending / C-g checking */
2455 /************************************************************************/
2458 quit_char_predicate (Display *display, XEvent *event, XPointer data)
2460 struct device *d = get_device_from_display (display);
2461 struct x_device *xd = DEVICE_X_DATA (d);
2463 Bool *critical = (Bool *) data;
2468 if ((event->type != KeyPress) ||
2469 (! x_any_window_to_frame (d, event->xany.window)) ||
2471 & (xd->MetaMask | xd->HyperMask | xd->SuperMask | xd->AltMask)))
2474 /* This duplicates some code that exists elsewhere, but it's relatively
2475 fast and doesn't cons. */
2476 keysym = x_to_emacs_keysym (&event->xkey, 1);
2477 if (NILP (keysym)) return 0;
2478 if (CHAR_OR_CHAR_INTP (keysym))
2479 c = XCHAR_OR_CHAR_INT (keysym);
2480 /* Highly doubtful that these are the quit character, but... */
2481 else if (EQ (keysym, QKbackspace)) c = '\b';
2482 else if (EQ (keysym, QKtab)) c = '\t';
2483 else if (EQ (keysym, QKlinefeed)) c = '\n';
2484 else if (EQ (keysym, QKreturn)) c = '\r';
2485 else if (EQ (keysym, QKescape)) c = 27;
2486 else if (EQ (keysym, QKspace)) c = ' ';
2487 else if (EQ (keysym, QKdelete)) c = 127;
2490 if (event->xkey.state & xd->MetaMask) c |= 0x80;
2491 if ((event->xkey.state & ControlMask) && !(c >= 'A' && c <= 'Z'))
2492 c &= 0x1F; /* unshifted control characters */
2493 quit_char = CONSOLE_QUIT_CHAR (XCONSOLE (DEVICE_CONSOLE (d)));
2496 /* If we've got Control-Shift-G instead of Control-G, that means
2497 we have a critical_quit. Caps_Lock is its own modifier, so it
2498 won't cause ^G to act differently than before. */
2499 if (event->xkey.state & ControlMask) c &= 0x1F;
2502 if (critical) *critical = True;
2508 /* This scans the X input queue for a KeyPress event that matches the
2509 quit character, and sets Vquit_flag. This is called from the
2510 QUIT macro to determine whether we should quit.
2512 In a SIGIO world, this won't be called unless a SIGIO has happened
2513 since the last time we checked.
2515 In a non-SIGIO world, this is called from emacs_Xt_event_pending_p
2516 (which is called from input_pending_p).
2519 x_check_for_quit_char (Display *display)
2523 Bool critical_quit = False;
2524 XEventsQueued (display, QueuedAfterReading);
2525 queued = XCheckIfEvent (display, &event,
2526 quit_char_predicate,
2527 (char *) &critical_quit);
2530 Vquit_flag = (critical_quit ? Qcritical : Qt);
2531 /* don't put the event back onto the queue. Those functions that
2532 wanted to read a ^G directly have arranged to do this. */
2537 check_for_tty_quit_char (struct device *d)
2539 SELECT_TYPE temp_mask;
2540 int infd = DEVICE_INFD (d);
2541 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
2542 Emchar quit_char = CONSOLE_QUIT_CHAR (con);
2544 FD_ZERO (&temp_mask);
2545 FD_SET (infd, &temp_mask);
2552 if (!poll_fds_for_input (temp_mask))
2555 event = Fmake_event (Qnil, Qnil);
2556 if (!read_event_from_tty_or_stream_desc (XEVENT (event), con, infd))
2557 /* EOF, or something ... */
2559 /* #### bogus. quit-char should be allowed to be any sort
2561 the_char = event_to_character (XEVENT (event), 1, 0, 0);
2562 if (the_char >= 0 && the_char == quit_char)
2565 /* do not queue the C-g. See above. */
2569 /* queue the read event to be read for real later. */
2570 enqueue_Xt_dispatch_event (event);
2575 emacs_Xt_quit_p (void)
2577 Lisp_Object devcons, concons;
2578 CONSOLE_LOOP (concons)
2580 struct console *con = XCONSOLE (XCAR (concons));
2581 if (!con->input_enabled)
2584 CONSOLE_DEVICE_LOOP (devcons, con)
2587 d = XDEVICE (XCAR (devcons));
2589 if (DEVICE_X_P (d) && DEVICE_X_DISPLAY (d))
2590 /* emacs may be exiting */
2591 x_check_for_quit_char (DEVICE_X_DISPLAY (d));
2592 else if (DEVICE_TTY_P (d))
2593 check_for_tty_quit_char (d);
2599 drain_X_queue (void)
2601 while (XtAppPending (Xt_app_con) & XtIMXEvent)
2602 XtAppProcessEvent (Xt_app_con, XtIMXEvent);
2606 emacs_Xt_event_pending_p (int user_p)
2611 /* If `user_p' is false, then this function returns whether there are any
2612 X, timeout, or fd events pending (that is, whether emacs_Xt_next_event()
2613 would return immediately without blocking).
2615 if `user_p' is true, then this function returns whether there are any
2616 *user generated* events available (that is, whether there are keyboard
2617 or mouse-click events ready to be read). This also implies that
2618 emacs_Xt_next_event() would not block.
2620 In a non-SIGIO world, this also checks whether the user has typed ^G,
2621 since this is a convenient place to do so. We don't need to do this
2622 in a SIGIO world, since input causes an interrupt.
2626 /* I don't think there's any point to this and it will nullify
2627 the speed gains achieved by the sigio_happened checking below.
2628 Its only advantage is that it may possibly make C-g response
2629 a bit faster. The C-g will be noticed within 0.25 second, anyway,
2630 even without this. */
2632 /* First check for C-g if necessary */
2637 /* This function used to simply check whether there were any X
2638 events (or if user_p was 1, it iterated over all the pending
2639 X events using XCheckIfEvent(), looking for keystrokes and
2640 button events). That worked in the old cheesoid event loop,
2641 which didn't go through XtAppDispatchEvent(), but it doesn't
2642 work any more -- X events may not result in anything. For
2643 example, a button press in a blank part of the menubar appears
2644 as an X event but will not result in any Emacs events (a
2645 button press that activates the menubar results in an Emacs
2646 event through the stop_next_event mechanism).
2648 The only accurate way of determining whether these X events
2649 translate into Emacs events is to go ahead and dispatch them
2650 until there's something on the dispatch queue. */
2652 /* See if there are any user events already on the queue. */
2653 EVENT_CHAIN_LOOP (event, dispatch_event_queue)
2654 if (!user_p || command_event_p (event))
2657 /* See if there's any TTY input available.
2659 if (poll_fds_for_input (tty_only_mask))
2664 /* If not user_p and there are any timer or file-desc events
2665 pending, we know there will be an event so we're through. */
2666 XtInputMask pending_value;
2668 /* Note that formerly we just checked the value of XtAppPending()
2669 to determine if there was file-desc input. This doesn't
2670 work any more with the signal_event_pipe; XtAppPending()
2671 will says "yes" in this case but there isn't really any
2672 input. Another way of fixing this problem is for the
2673 signal_event_pipe to generate actual input in the form
2674 of an identity eval event or something. (#### maybe this
2675 actually happens?) */
2677 if (poll_fds_for_input (process_only_mask))
2680 pending_value = XtAppPending (Xt_app_con);
2682 if (pending_value & XtIMTimer)
2686 /* XtAppPending() can be super-slow, esp. over a network connection.
2687 Quantify results have indicated that in some cases the
2688 call to detect_input_pending() completely dominates the
2689 running time of redisplay(). Fortunately, in a SIGIO world
2690 we can more quickly determine whether there are any X events:
2691 if an event has happened since the last time we checked, then
2692 a SIGIO will have happened. On a machine with broken SIGIO,
2693 we'll still be in an OK state -- the sigio_happened flag
2694 will get set at least once a second, so we'll be no more than
2695 one second behind reality. (In general it's OK if we
2696 erroneously report no input pending when input is actually
2697 pending() -- preemption is just a bit less efficient, that's
2698 all. It's bad bad bad if you err the other way -- you've
2699 promised that `next-event' won't block but it actually will,
2700 and some action might get delayed until the next time you
2704 /* quit_check_signal_tick_count is volatile so try to avoid race conditions
2705 by using a temporary variable */
2706 tick_count_val = quit_check_signal_tick_count;
2707 if (last_quit_check_signal_tick_count != tick_count_val)
2709 last_quit_check_signal_tick_count = tick_count_val;
2711 /* We need to drain the entire queue now -- if we only
2712 drain part of it, we may later on end up with events
2713 actually pending but detect_input_pending() returning
2714 false because there wasn't another SIGIO. */
2717 EVENT_CHAIN_LOOP (event, dispatch_event_queue)
2718 if (!user_p || command_event_p (event))
2726 /************************************************************************/
2727 /* replacement for standard string-to-pixel converter */
2728 /************************************************************************/
2730 /* This was constructed by ripping off the standard string-to-pixel
2731 converter from Converters.c in the Xt source code and modifying
2736 /* This is exported by the Xt library (at least by mine). If this
2737 isn't the case somewhere, rename this appropriately and remove
2738 the '#if 0'. Note, however, that I got "unknown structure"
2739 errors when I tried this. */
2740 XtConvertArgRec Const colorConvertArgs[] = {
2741 {XtWidgetBaseOffset, (XtPointer)XtOffsetOf(WidgetRec, core.screen),
2743 {XtWidgetBaseOffset, (XtPointer)XtOffsetOf(WidgetRec, core.colormap),
2749 #define done(type, value) \
2750 if (toVal->addr != NULL) { \
2751 if (toVal->size < sizeof(type)) { \
2752 toVal->size = sizeof(type); \
2755 *(type*)(toVal->addr) = (value); \
2757 static type static_val; \
2758 static_val = (value); \
2759 toVal->addr = (XPointer)&static_val; \
2761 toVal->size = sizeof(type); \
2762 return True /* Caller supplies `;' */
2764 /* JH: We use this because I think there's a possibility this
2765 is called before the device is properly set up, in which case
2766 I don't want to abort. */
2767 extern struct device *get_device_from_display_1 (Display *dpy);
2770 Boolean EmacsXtCvtStringToPixel (
2774 XrmValuePtr fromVal,
2776 XtPointer *closure_ret)
2778 String str = (String)fromVal->addr;
2787 Cardinal num_params = 1;
2788 XtAppContext the_app_con = XtDisplayToApplicationContext (dpy);
2790 if (*num_args != 2) {
2791 XtAppWarningMsg(the_app_con, "wrongParameters", "cvtStringToPixel",
2793 "String to pixel conversion needs screen and colormap arguments",
2794 (String *)NULL, (Cardinal *)NULL);
2798 screen = *((Screen **) args[0].addr);
2799 colormap = *((Colormap *) args[1].addr);
2801 /* The original uses the private function CompareISOLatin1().
2802 Use XmuCompareISOLatin1() if you want, but I don't think it
2803 makes any difference here. */
2804 if (strcmp(str, XtDefaultBackground) == 0) {
2805 *closure_ret = False;
2806 /* This refers to the display's "*reverseVideo" resource.
2807 These display resources aren't documented anywhere that
2808 I can find, so I'm going to ignore this. */
2809 /* if (pd->rv) done(Pixel, BlackPixelOfScreen(screen)) else */
2810 done(Pixel, WhitePixelOfScreen(screen));
2812 if (strcmp(str, XtDefaultForeground) == 0) {
2813 *closure_ret = False;
2814 /* if (pd->rv) done(Pixel, WhitePixelOfScreen(screen)) else */
2815 done(Pixel, BlackPixelOfScreen(screen));
2818 /* Originally called XAllocNamedColor() here. */
2819 if ((d = get_device_from_display_1(dpy))) {
2820 visual = DEVICE_X_VISUAL(d);
2821 if (colormap != DEVICE_X_COLORMAP(d)) {
2822 XtAppWarningMsg(the_app_con, "wierdColormap", "cvtStringToPixel",
2824 "The colormap passed to cvtStringToPixel doesn't match the one registerd to the device.\n",
2826 status = XAllocNamedColor(dpy, colormap, (char*)str, &screenColor, &exactColor);
2828 status = XParseColor (dpy, colormap, (char*)str, &screenColor);
2830 status = allocate_nearest_color (dpy, colormap, visual, &screenColor);
2834 /* We haven't set up this device totally yet, so just punt */
2835 status = XAllocNamedColor(dpy, colormap, (char*)str, &screenColor, &exactColor);
2839 /* Server returns a specific error code but Xlib discards it. Ugh */
2840 if (XLookupColor(DisplayOfScreen(screen), colormap, (char*) str,
2841 &exactColor, &screenColor)) {
2842 XtAppWarningMsg(the_app_con, "noColormap", "cvtStringToPixel",
2844 "Cannot allocate colormap entry for \"%s\"",
2845 params, &num_params);
2848 XtAppWarningMsg(the_app_con, "badValue", "cvtStringToPixel",
2850 "Color name \"%s\" is not defined", params, &num_params);
2853 *closure_ret = False;
2856 *closure_ret = (char*)True;
2857 done(Pixel, screenColor.pixel);
2862 static void EmacsFreePixel (
2869 if (*num_args != 2) {
2870 XtAppWarningMsg(app, "wrongParameters","freePixel","XtToolkitError",
2871 "Freeing a pixel requires screen and colormap arguments",
2872 (String *)NULL, (Cardinal *)NULL);
2877 Screen *screen = *((Screen **) args[0].addr);
2878 Colormap colormap = *((Colormap *) args[1].addr);
2879 XFreeColors(DisplayOfScreen(screen), colormap,
2880 (unsigned long*)toVal->addr, 1, (unsigned long)0);
2885 /************************************************************************/
2886 /* initialization */
2887 /************************************************************************/
2890 syms_of_event_Xt (void)
2892 defsymbol (&Qkey_mapping, "key-mapping");
2893 defsymbol (&Qsans_modifiers, "sans-modifiers");
2897 reinit_vars_of_event_Xt (void)
2899 Xt_event_stream = xnew (struct event_stream);
2900 Xt_event_stream->event_pending_p = emacs_Xt_event_pending_p;
2901 Xt_event_stream->next_event_cb = emacs_Xt_next_event;
2902 Xt_event_stream->handle_magic_event_cb = emacs_Xt_handle_magic_event;
2903 Xt_event_stream->add_timeout_cb = emacs_Xt_add_timeout;
2904 Xt_event_stream->remove_timeout_cb = emacs_Xt_remove_timeout;
2905 Xt_event_stream->select_console_cb = emacs_Xt_select_console;
2906 Xt_event_stream->unselect_console_cb = emacs_Xt_unselect_console;
2907 Xt_event_stream->select_process_cb = emacs_Xt_select_process;
2908 Xt_event_stream->unselect_process_cb = emacs_Xt_unselect_process;
2909 Xt_event_stream->quit_p_cb = emacs_Xt_quit_p;
2910 Xt_event_stream->create_stream_pair_cb = emacs_Xt_create_stream_pair;
2911 Xt_event_stream->delete_stream_pair_cb = emacs_Xt_delete_stream_pair;
2913 the_Xt_timeout_blocktype = Blocktype_new (struct Xt_timeout_blocktype);
2915 last_quit_check_signal_tick_count = 0;
2917 /* this function only makes safe calls */
2918 init_what_input_once ();
2922 vars_of_event_Xt (void)
2924 reinit_vars_of_event_Xt ();
2926 dispatch_event_queue = Qnil;
2927 staticpro (&dispatch_event_queue);
2928 dispatch_event_queue_tail = Qnil;
2929 pdump_wire (&dispatch_event_queue_tail);
2931 DEFVAR_BOOL ("modifier-keys-are-sticky", &modifier_keys_are_sticky /*
2932 *Non-nil makes modifier keys sticky.
2933 This means that you can release the modifier key before pressing down
2934 the key that you wish to be modified. Although this is non-standard
2935 behavior, it is recommended because it reduces the strain on your hand,
2936 thus reducing the incidence of the dreaded Emacs-pinky syndrome.
2938 modifier_keys_are_sticky = 0;
2940 DEFVAR_BOOL ("x-allow-sendevents", &x_allow_sendevents /*
2941 *Non-nil means to allow synthetic events. Nil means they are ignored.
2942 Beware: allowing emacs to process SendEvents opens a big security hole.
2944 x_allow_sendevents = 0;
2947 DEFVAR_INT ("x-debug-events", &x_debug_events /*
2948 If non-zero, display debug information about X events that XEmacs sees.
2949 Information is displayed on stderr. Currently defined values are:
2951 1 == non-verbose output
2958 /* This mess is a hack that patches the shell widget to treat visual inheritance
2959 the same as colormap and depth inheritance */
2961 static XtInitProc orig_shell_init_proc;
2963 static void ShellVisualPatch(Widget wanted, Widget new,
2964 ArgList args, Cardinal *num_args)
2967 ShellWidget w = (ShellWidget) new;
2969 /* first, call the original setup */
2970 (*orig_shell_init_proc)(wanted, new, args, num_args);
2972 /* if the visual isn't explicitly set, grab it from the nearest shell ancestor */
2973 if (w->shell.visual == CopyFromParent) {
2975 while (p && !XtIsShell(p)) p = XtParent(p);
2976 if (p) w->shell.visual = ((ShellWidget)p)->shell.visual;
2981 init_event_Xt_late (void) /* called when already initialized */
2983 timeout_id_tick = 1;
2984 pending_timeouts = 0;
2985 completed_timeouts = 0;
2987 event_stream = Xt_event_stream;
2989 #if defined(HAVE_XIM) || defined(USE_XFONTSET)
2990 Initialize_Locale();
2991 #endif /* HAVE_XIM || USE_XFONTSET */
2993 XtToolkitInitialize ();
2994 Xt_app_con = XtCreateApplicationContext ();
2995 XtAppSetFallbackResources (Xt_app_con, (String *) x_fallback_resources);
2998 x_selection_timeout = (XtAppGetSelectionTimeout (Xt_app_con) / 1000);
2999 XSetErrorHandler (x_error_handler);
3000 XSetIOErrorHandler (x_IO_error_handler);
3003 XtAppAddInput (Xt_app_con, signal_event_pipe[0],
3004 (XtPointer) (XtInputReadMask /* | XtInputExceptMask */),
3005 Xt_what_callback, 0);
3008 XtAppSetTypeConverter (Xt_app_con, XtRString, XtRPixel,
3009 EmacsXtCvtStringToPixel,
3010 (XtConvertArgList) colorConvertArgs,
3011 2, XtCacheByDisplay, EmacsFreePixel);
3014 XtAppSetTypeConverter (Xt_app_con, XtRString, XtRXimStyles,
3015 EmacsXtCvtStringToXIMStyles,
3017 XtCacheByDisplay, EmacsFreeXIMStyles);
3018 #endif /* XIM_XLIB */
3020 /* insert the visual inheritance patch/hack described above */
3021 orig_shell_init_proc = shellClassRec.core_class.initialize;
3022 shellClassRec.core_class.initialize = ShellVisualPatch;