1 /* X Selection processing for Emacs.
2 Copyright (C) 1993, 1994 Free Software Foundation.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
20 /* x_handle_selection_notify
21 x_reply_selection_request */
24 /* Rewritten by jwz */
29 #include <stdio.h> /* termhooks.h needs this */
30 #include "termhooks.h"
32 #include "xterm.h" /* for all of the X includes */
33 #include "dispextern.h" /* frame.h seems to want this */
34 #include "frame.h" /* Need this to get the X window of selected_frame */
35 #include "blockinput.h"
39 #define CUT_BUFFER_SUPPORT
41 Lisp_Object QPRIMARY
, QSECONDARY
, QSTRING
, QINTEGER
, QCLIPBOARD
, QTIMESTAMP
,
42 QTEXT
, QDELETE
, QMULTIPLE
, QINCR
, QEMACS_TMP
, QTARGETS
, QATOM
, QNULL
,
45 #ifdef CUT_BUFFER_SUPPORT
46 Lisp_Object QCUT_BUFFER0
, QCUT_BUFFER1
, QCUT_BUFFER2
, QCUT_BUFFER3
,
47 QCUT_BUFFER4
, QCUT_BUFFER5
, QCUT_BUFFER6
, QCUT_BUFFER7
;
50 Lisp_Object Vx_lost_selection_hooks
;
51 Lisp_Object Vx_sent_selection_hooks
;
53 /* If this is a smaller number than the max-request-size of the display,
54 emacs will use INCR selection transfer when the selection is larger
55 than this. The max-request-size is usually around 64k, so if you want
56 emacs to use incremental selection transfers when the selection is
57 smaller than that, set this. I added this mostly for debugging the
58 incremental transfer stuff, but it might improve server performance.
60 #define MAX_SELECTION_QUANTUM 0xFFFFFF
63 #define SELECTION_QUANTUM(dpy) ((XMaxRequestSize(dpy) << 2) - 100)
65 #define SELECTION_QUANTUM(dpy) (((dpy)->max_request_size << 2) - 100)
68 /* The timestamp of the last input event Emacs received from the X server. */
69 unsigned long last_event_timestamp
;
71 /* This is an association list whose elements are of the form
72 ( SELECTION-NAME SELECTION-VALUE SELECTION-TIMESTAMP FRAME)
73 SELECTION-NAME is a lisp symbol, whose name is the name of an X Atom.
74 SELECTION-VALUE is the value that emacs owns for that selection.
75 It may be any kind of Lisp object.
76 SELECTION-TIMESTAMP is the time at which emacs began owning this selection,
77 as a cons of two 16-bit numbers (making a 32 bit time.)
78 FRAME is the frame for which we made the selection.
79 If there is an entry in this alist, then it can be assumed that Emacs owns
81 The only (eq) parts of this list that are visible from Lisp are the
84 Lisp_Object Vselection_alist
;
86 /* This is an alist whose CARs are selection-types (whose names are the same
87 as the names of X Atoms) and whose CDRs are the names of Lisp functions to
88 call to convert the given Emacs selection value to a string representing
89 the given selection type. This is for Lisp-level extension of the emacs
92 Lisp_Object Vselection_converter_alist
;
94 /* If the selection owner takes too long to reply to a selection request,
95 we give up on it. This is in milliseconds (0 = no timeout.)
97 int x_selection_timeout
;
99 /* Utility functions */
101 static void lisp_data_to_selection_data ();
102 static Lisp_Object
selection_data_to_lisp_data ();
103 static Lisp_Object
x_get_window_property_as_lisp_data ();
105 /* This converts a Lisp symbol to a server Atom, avoiding a server
106 roundtrip whenever possible. */
109 symbol_to_x_atom (dpyinfo
, display
, sym
)
110 struct x_display_info
*dpyinfo
;
115 if (NILP (sym
)) return 0;
116 if (EQ (sym
, QPRIMARY
)) return XA_PRIMARY
;
117 if (EQ (sym
, QSECONDARY
)) return XA_SECONDARY
;
118 if (EQ (sym
, QSTRING
)) return XA_STRING
;
119 if (EQ (sym
, QINTEGER
)) return XA_INTEGER
;
120 if (EQ (sym
, QATOM
)) return XA_ATOM
;
121 if (EQ (sym
, QCLIPBOARD
)) return dpyinfo
->Xatom_CLIPBOARD
;
122 if (EQ (sym
, QTIMESTAMP
)) return dpyinfo
->Xatom_TIMESTAMP
;
123 if (EQ (sym
, QTEXT
)) return dpyinfo
->Xatom_TEXT
;
124 if (EQ (sym
, QDELETE
)) return dpyinfo
->Xatom_DELETE
;
125 if (EQ (sym
, QMULTIPLE
)) return dpyinfo
->Xatom_MULTIPLE
;
126 if (EQ (sym
, QINCR
)) return dpyinfo
->Xatom_INCR
;
127 if (EQ (sym
, QEMACS_TMP
)) return dpyinfo
->Xatom_EMACS_TMP
;
128 if (EQ (sym
, QTARGETS
)) return dpyinfo
->Xatom_TARGETS
;
129 if (EQ (sym
, QNULL
)) return dpyinfo
->Xatom_NULL
;
130 #ifdef CUT_BUFFER_SUPPORT
131 if (EQ (sym
, QCUT_BUFFER0
)) return XA_CUT_BUFFER0
;
132 if (EQ (sym
, QCUT_BUFFER1
)) return XA_CUT_BUFFER1
;
133 if (EQ (sym
, QCUT_BUFFER2
)) return XA_CUT_BUFFER2
;
134 if (EQ (sym
, QCUT_BUFFER3
)) return XA_CUT_BUFFER3
;
135 if (EQ (sym
, QCUT_BUFFER4
)) return XA_CUT_BUFFER4
;
136 if (EQ (sym
, QCUT_BUFFER5
)) return XA_CUT_BUFFER5
;
137 if (EQ (sym
, QCUT_BUFFER6
)) return XA_CUT_BUFFER6
;
138 if (EQ (sym
, QCUT_BUFFER7
)) return XA_CUT_BUFFER7
;
140 if (!SYMBOLP (sym
)) abort ();
143 fprintf (stderr
, " XInternAtom %s\n", (char *) XSYMBOL (sym
)->name
->data
);
146 val
= XInternAtom (display
, (char *) XSYMBOL (sym
)->name
->data
, False
);
152 /* This converts a server Atom to a Lisp symbol, avoiding server roundtrips
153 and calls to intern whenever possible. */
156 x_atom_to_symbol (dpyinfo
, display
, atom
)
157 struct x_display_info
*dpyinfo
;
163 if (! atom
) return Qnil
;
176 #ifdef CUT_BUFFER_SUPPORT
196 if (atom
== dpyinfo
->Xatom_CLIPBOARD
)
198 if (atom
== dpyinfo
->Xatom_TIMESTAMP
)
200 if (atom
== dpyinfo
->Xatom_TEXT
)
202 if (atom
== dpyinfo
->Xatom_DELETE
)
204 if (atom
== dpyinfo
->Xatom_MULTIPLE
)
206 if (atom
== dpyinfo
->Xatom_INCR
)
208 if (atom
== dpyinfo
->Xatom_EMACS_TMP
)
210 if (atom
== dpyinfo
->Xatom_TARGETS
)
212 if (atom
== dpyinfo
->Xatom_NULL
)
216 str
= XGetAtomName (display
, atom
);
219 fprintf (stderr
, " XGetAtomName --> %s\n", str
);
221 if (! str
) return Qnil
;
229 /* Do protocol to assert ourself as a selection owner.
230 Update the Vselection_alist so that we can reply to later requests for
234 x_own_selection (selection_name
, selection_value
)
235 Lisp_Object selection_name
, selection_value
;
237 Window selecting_window
= FRAME_X_WINDOW (selected_frame
);
238 Display
*display
= FRAME_X_DISPLAY (selected_frame
);
239 Time time
= last_event_timestamp
;
241 struct x_display_info
*dpyinfo
= FRAME_X_DISPLAY_INFO (selected_frame
);
243 CHECK_SYMBOL (selection_name
, 0);
244 selection_atom
= symbol_to_x_atom (dpyinfo
, display
, selection_name
);
247 x_catch_errors (selected_frame
);
248 XSetSelectionOwner (display
, selection_atom
, selecting_window
, time
);
249 x_check_errors (selected_frame
, "Can't set selection: %s");
250 x_uncatch_errors (selected_frame
);
253 /* Now update the local cache */
255 Lisp_Object selection_time
;
256 Lisp_Object selection_data
;
257 Lisp_Object prev_value
;
259 selection_time
= long_to_cons ((unsigned long) time
);
260 selection_data
= Fcons (selection_name
,
261 Fcons (selection_value
,
262 Fcons (selection_time
,
263 Fcons (Fselected_frame (), Qnil
))));
264 prev_value
= assq_no_quit (selection_name
, Vselection_alist
);
266 Vselection_alist
= Fcons (selection_data
, Vselection_alist
);
268 /* If we already owned the selection, remove the old selection data.
269 Perhaps we should destructively modify it instead.
270 Don't use Fdelq as that may QUIT. */
271 if (!NILP (prev_value
))
273 Lisp_Object rest
; /* we know it's not the CAR, so it's easy. */
274 for (rest
= Vselection_alist
; !NILP (rest
); rest
= Fcdr (rest
))
275 if (EQ (prev_value
, Fcar (XCONS (rest
)->cdr
)))
277 XCONS (rest
)->cdr
= Fcdr (XCONS (rest
)->cdr
);
284 /* Given a selection-name and desired type, look up our local copy of
285 the selection value and convert it to the type.
286 The value is nil or a string.
287 This function is used both for remote requests
288 and for local x-get-selection-internal.
290 This calls random Lisp code, and may signal or gc. */
293 x_get_local_selection (selection_symbol
, target_type
)
294 Lisp_Object selection_symbol
, target_type
;
296 Lisp_Object local_value
;
297 Lisp_Object handler_fn
, value
, type
, check
;
300 local_value
= assq_no_quit (selection_symbol
, Vselection_alist
);
302 if (NILP (local_value
)) return Qnil
;
304 /* TIMESTAMP and MULTIPLE are special cases 'cause that's easiest. */
305 if (EQ (target_type
, QTIMESTAMP
))
308 value
= XCONS (XCONS (XCONS (local_value
)->cdr
)->cdr
)->car
;
311 else if (EQ (target_type
, QDELETE
))
314 Fx_disown_selection_internal
316 XCONS (XCONS (XCONS (local_value
)->cdr
)->cdr
)->car
);
321 #if 0 /* #### MULTIPLE doesn't work yet */
322 else if (CONSP (target_type
)
323 && XCONS (target_type
)->car
== QMULTIPLE
)
328 pairs
= XCONS (target_type
)->cdr
;
329 size
= XVECTOR (pairs
)->size
;
330 /* If the target is MULTIPLE, then target_type looks like
331 (MULTIPLE . [[SELECTION1 TARGET1] [SELECTION2 TARGET2] ... ])
332 We modify the second element of each pair in the vector and
333 return it as [[SELECTION1 <value1>] [SELECTION2 <value2>] ... ]
335 for (i
= 0; i
< size
; i
++)
338 pair
= XVECTOR (pairs
)->contents
[i
];
339 XVECTOR (pair
)->contents
[1]
340 = x_get_local_selection (XVECTOR (pair
)->contents
[0],
341 XVECTOR (pair
)->contents
[1]);
348 /* Don't allow a quit within the converter.
349 When the user types C-g, he would be surprised
350 if by luck it came during a converter. */
351 count
= specpdl_ptr
- specpdl
;
352 specbind (Qinhibit_quit
, Qt
);
354 CHECK_SYMBOL (target_type
, 0);
355 handler_fn
= Fcdr (Fassq (target_type
, Vselection_converter_alist
));
356 if (!NILP (handler_fn
))
357 value
= call3 (handler_fn
,
358 selection_symbol
, target_type
,
359 XCONS (XCONS (local_value
)->cdr
)->car
);
362 unbind_to (count
, Qnil
);
365 /* Make sure this value is of a type that we could transmit
366 to another X client. */
370 && SYMBOLP (XCONS (value
)->car
))
371 type
= XCONS (value
)->car
,
372 check
= XCONS (value
)->cdr
;
380 /* Check for a value that cons_to_long could handle. */
381 else if (CONSP (check
)
382 && INTEGERP (XCONS (check
)->car
)
383 && (INTEGERP (XCONS (check
)->cdr
)
385 (CONSP (XCONS (check
)->cdr
)
386 && INTEGERP (XCONS (XCONS (check
)->cdr
)->car
)
387 && NILP (XCONS (XCONS (check
)->cdr
)->cdr
))))
392 Fcons (build_string ("invalid data returned by selection-conversion function"),
393 Fcons (handler_fn
, Fcons (value
, Qnil
))));
396 /* Subroutines of x_reply_selection_request. */
398 /* Send a SelectionNotify event to the requestor with property=None,
399 meaning we were unable to do what they wanted. */
402 x_decline_selection_request (event
)
403 struct input_event
*event
;
405 XSelectionEvent reply
;
406 reply
.type
= SelectionNotify
;
407 reply
.display
= SELECTION_EVENT_DISPLAY (event
);
408 reply
.requestor
= SELECTION_EVENT_REQUESTOR (event
);
409 reply
.selection
= SELECTION_EVENT_SELECTION (event
);
410 reply
.time
= SELECTION_EVENT_TIME (event
);
411 reply
.target
= SELECTION_EVENT_TARGET (event
);
412 reply
.property
= None
;
415 XSendEvent (reply
.display
, reply
.requestor
, False
, 0L,
417 XFlush (reply
.display
);
421 /* This is the selection request currently being processed.
422 It is set to zero when the request is fully processed. */
423 static struct input_event
*x_selection_current_request
;
425 /* Used as an unwind-protect clause so that, if a selection-converter signals
426 an error, we tell the requestor that we were unable to do what they wanted
427 before we throw to top-level or go into the debugger or whatever. */
430 x_selection_request_lisp_error (ignore
)
433 if (x_selection_current_request
!= 0)
434 x_decline_selection_request (x_selection_current_request
);
439 /* This stuff is so that INCR selections are reentrant (that is, so we can
440 be servicing multiple INCR selection requests simultaneously.) I haven't
441 actually tested that yet. */
443 /* Keep a list of the property changes that are awaited. */
453 struct prop_location
*next
;
456 static struct prop_location
*expect_property_change ();
457 static void wait_for_property_change ();
458 static void unexpect_property_change ();
459 static int waiting_for_other_props_on_window ();
461 static int prop_location_identifier
;
463 static Lisp_Object property_change_reply
;
465 static struct prop_location
*property_change_reply_object
;
467 static struct prop_location
*property_change_wait_list
;
469 /* Send the reply to a selection request event EVENT.
470 TYPE is the type of selection data requested.
471 DATA and SIZE describe the data to send, already converted.
472 FORMAT is the unit-size (in bits) of the data to be transmitted. */
475 x_reply_selection_request (event
, format
, data
, size
, type
)
476 struct input_event
*event
;
481 XSelectionEvent reply
;
482 Display
*display
= SELECTION_EVENT_DISPLAY (event
);
483 Window window
= SELECTION_EVENT_REQUESTOR (event
);
485 int format_bytes
= format
/8;
486 int max_bytes
= SELECTION_QUANTUM (display
);
487 struct x_display_info
*dpyinfo
= x_display_info_for_display (display
);
489 if (max_bytes
> MAX_SELECTION_QUANTUM
)
490 max_bytes
= MAX_SELECTION_QUANTUM
;
492 reply
.type
= SelectionNotify
;
493 reply
.display
= display
;
494 reply
.requestor
= window
;
495 reply
.selection
= SELECTION_EVENT_SELECTION (event
);
496 reply
.time
= SELECTION_EVENT_TIME (event
);
497 reply
.target
= SELECTION_EVENT_TARGET (event
);
498 reply
.property
= SELECTION_EVENT_PROPERTY (event
);
499 if (reply
.property
== None
)
500 reply
.property
= reply
.target
;
502 /* #### XChangeProperty can generate BadAlloc, and we must handle it! */
504 /* Store the data on the requested property.
505 If the selection is large, only store the first N bytes of it.
507 bytes_remaining
= size
* format_bytes
;
508 if (bytes_remaining
<= max_bytes
)
510 /* Send all the data at once, with minimal handshaking. */
512 fprintf (stderr
,"\nStoring all %d\n", bytes_remaining
);
515 XChangeProperty (display
, window
, reply
.property
, type
, format
,
516 PropModeReplace
, data
, size
);
517 /* At this point, the selection was successfully stored; ack it. */
518 XSendEvent (display
, window
, False
, 0L, (XEvent
*) &reply
);
524 /* Send an INCR selection. */
525 struct prop_location
*wait_object
;
529 if (x_window_to_frame (window
)) /* #### debug */
530 error ("attempt to transfer an INCR to ourself!");
532 fprintf (stderr
, "\nINCR %d\n", bytes_remaining
);
534 wait_object
= expect_property_change (display
, window
, reply
.property
,
537 XChangeProperty (display
, window
, reply
.property
, dpyinfo
->Xatom_INCR
,
538 32, PropModeReplace
, (unsigned char *)
539 &bytes_remaining
, 1);
540 XSelectInput (display
, window
, PropertyChangeMask
);
541 /* Tell 'em the INCR data is there... */
542 (void) XSendEvent (display
, window
, False
, 0L, (XEvent
*) &reply
);
546 /* First, wait for the requestor to ack by deleting the property.
547 This can run random lisp code (process handlers) or signal. */
548 wait_for_property_change (wait_object
);
550 while (bytes_remaining
)
552 int i
= ((bytes_remaining
< max_bytes
)
559 = expect_property_change (display
, window
, reply
.property
,
562 fprintf (stderr
," INCR adding %d\n", i
);
564 /* Append the next chunk of data to the property. */
565 XChangeProperty (display
, window
, reply
.property
, type
, format
,
566 PropModeAppend
, data
, i
/ format_bytes
);
567 bytes_remaining
-= i
;
572 /* Now wait for the requestor to ack this chunk by deleting the
573 property. This can run random lisp code or signal.
575 wait_for_property_change (wait_object
);
577 /* Now write a zero-length chunk to the property to tell the requestor
580 fprintf (stderr
," INCR done\n");
583 if (! waiting_for_other_props_on_window (display
, window
))
584 XSelectInput (display
, window
, 0L);
586 XChangeProperty (display
, window
, reply
.property
, type
, format
,
587 PropModeReplace
, data
, 0);
593 /* Handle a SelectionRequest event EVENT.
594 This is called from keyboard.c when such an event is found in the queue. */
597 x_handle_selection_request (event
)
598 struct input_event
*event
;
600 struct gcpro gcpro1
, gcpro2
, gcpro3
;
601 Lisp_Object local_selection_data
;
602 Lisp_Object selection_symbol
;
603 Lisp_Object target_symbol
;
604 Lisp_Object converted_selection
;
605 Time local_selection_time
;
606 Lisp_Object successful_p
;
608 struct x_display_info
*dpyinfo
609 = x_display_info_for_display (SELECTION_EVENT_DISPLAY (event
));
611 local_selection_data
= Qnil
;
612 target_symbol
= Qnil
;
613 converted_selection
= Qnil
;
616 GCPRO3 (local_selection_data
, converted_selection
, target_symbol
);
618 selection_symbol
= x_atom_to_symbol (dpyinfo
,
619 SELECTION_EVENT_DISPLAY (event
),
620 SELECTION_EVENT_SELECTION (event
));
622 local_selection_data
= assq_no_quit (selection_symbol
, Vselection_alist
);
624 if (NILP (local_selection_data
))
626 /* Someone asked for the selection, but we don't have it any more.
628 x_decline_selection_request (event
);
632 local_selection_time
= (Time
)
633 cons_to_long (XCONS (XCONS (XCONS (local_selection_data
)->cdr
)->cdr
)->car
);
635 if (SELECTION_EVENT_TIME (event
) != CurrentTime
636 && local_selection_time
> SELECTION_EVENT_TIME (event
))
638 /* Someone asked for the selection, and we have one, but not the one
641 x_decline_selection_request (event
);
645 count
= specpdl_ptr
- specpdl
;
646 x_selection_current_request
= event
;
647 record_unwind_protect (x_selection_request_lisp_error
, Qnil
);
649 target_symbol
= x_atom_to_symbol (dpyinfo
, SELECTION_EVENT_DISPLAY (event
),
650 SELECTION_EVENT_TARGET (event
));
652 #if 0 /* #### MULTIPLE doesn't work yet */
653 if (EQ (target_symbol
, QMULTIPLE
))
654 target_symbol
= fetch_multiple_target (event
);
657 /* Convert lisp objects back into binary data */
660 = x_get_local_selection (selection_symbol
, target_symbol
);
662 if (! NILP (converted_selection
))
670 lisp_data_to_selection_data (SELECTION_EVENT_DISPLAY (event
),
672 &data
, &type
, &size
, &format
, &nofree
);
674 x_reply_selection_request (event
, format
, data
, size
, type
);
677 /* Indicate we have successfully processed this event. */
678 x_selection_current_request
= 0;
683 unbind_to (count
, Qnil
);
689 /* Let random lisp code notice that the selection has been asked for. */
692 rest
= Vx_sent_selection_hooks
;
693 if (!EQ (rest
, Qunbound
))
694 for (; CONSP (rest
); rest
= Fcdr (rest
))
695 call3 (Fcar (rest
), selection_symbol
, target_symbol
, successful_p
);
699 /* Handle a SelectionClear event EVENT, which indicates that some other
700 client cleared out our previously asserted selection.
701 This is called from keyboard.c when such an event is found in the queue. */
704 x_handle_selection_clear (event
)
705 struct input_event
*event
;
707 Display
*display
= SELECTION_EVENT_DISPLAY (event
);
708 Atom selection
= SELECTION_EVENT_SELECTION (event
);
709 Time changed_owner_time
= SELECTION_EVENT_TIME (event
);
711 Lisp_Object selection_symbol
, local_selection_data
;
712 Time local_selection_time
;
713 struct x_display_info
*dpyinfo
= x_display_info_for_display (display
);
715 selection_symbol
= x_atom_to_symbol (dpyinfo
, display
, selection
);
717 local_selection_data
= assq_no_quit (selection_symbol
, Vselection_alist
);
719 /* Well, we already believe that we don't own it, so that's just fine. */
720 if (NILP (local_selection_data
)) return;
722 local_selection_time
= (Time
)
723 cons_to_long (XCONS (XCONS (XCONS (local_selection_data
)->cdr
)->cdr
)->car
);
725 /* This SelectionClear is for a selection that we no longer own, so we can
726 disregard it. (That is, we have reasserted the selection since this
727 request was generated.) */
729 if (changed_owner_time
!= CurrentTime
730 && local_selection_time
> changed_owner_time
)
733 /* Otherwise, we're really honest and truly being told to drop it.
734 Don't use Fdelq as that may QUIT;. */
736 if (EQ (local_selection_data
, Fcar (Vselection_alist
)))
737 Vselection_alist
= Fcdr (Vselection_alist
);
741 for (rest
= Vselection_alist
; !NILP (rest
); rest
= Fcdr (rest
))
742 if (EQ (local_selection_data
, Fcar (XCONS (rest
)->cdr
)))
744 XCONS (rest
)->cdr
= Fcdr (XCONS (rest
)->cdr
);
749 /* Let random lisp code notice that the selection has been stolen. */
753 rest
= Vx_lost_selection_hooks
;
754 if (!EQ (rest
, Qunbound
))
756 for (; CONSP (rest
); rest
= Fcdr (rest
))
757 call1 (Fcar (rest
), selection_symbol
);
758 prepare_menu_bars ();
759 redisplay_preserve_echo_area ();
764 /* Clear all selections that were made from frame F.
765 We do this when about to delete a frame. */
768 x_clear_frame_selections (f
)
774 XSETFRAME (frame
, f
);
776 /* Otherwise, we're really honest and truly being told to drop it.
777 Don't use Fdelq as that may QUIT;. */
779 while (!NILP (Vselection_alist
)
780 && EQ (frame
, Fcar (Fcdr (Fcdr (Fcdr (Fcar (Vselection_alist
)))))))
782 /* Let random Lisp code notice that the selection has been stolen. */
783 Lisp_Object hooks
, selection_symbol
;
785 hooks
= Vx_lost_selection_hooks
;
786 selection_symbol
= Fcar (Vselection_alist
);
788 if (!EQ (hooks
, Qunbound
))
790 for (; CONSP (hooks
); hooks
= Fcdr (hooks
))
791 call1 (Fcar (hooks
), selection_symbol
);
792 redisplay_preserve_echo_area ();
795 Vselection_alist
= Fcdr (Vselection_alist
);
798 for (rest
= Vselection_alist
; !NILP (rest
); rest
= Fcdr (rest
))
799 if (EQ (frame
, Fcar (Fcdr (Fcdr (Fcdr (Fcar (XCONS (rest
)->cdr
)))))))
801 /* Let random Lisp code notice that the selection has been stolen. */
802 Lisp_Object hooks
, selection_symbol
;
804 hooks
= Vx_lost_selection_hooks
;
805 selection_symbol
= Fcar (XCONS (rest
)->cdr
);
807 if (!EQ (hooks
, Qunbound
))
809 for (; CONSP (hooks
); hooks
= Fcdr (hooks
))
810 call1 (Fcar (hooks
), selection_symbol
);
811 redisplay_preserve_echo_area ();
813 XCONS (rest
)->cdr
= Fcdr (XCONS (rest
)->cdr
);
818 /* Nonzero if any properties for DISPLAY and WINDOW
819 are on the list of what we are waiting for. */
822 waiting_for_other_props_on_window (display
, window
)
826 struct prop_location
*rest
= property_change_wait_list
;
828 if (rest
->display
== display
&& rest
->window
== window
)
835 /* Add an entry to the list of property changes we are waiting for.
836 DISPLAY, WINDOW, PROPERTY, STATE describe what we will wait for.
837 The return value is a number that uniquely identifies
838 this awaited property change. */
840 static struct prop_location
*
841 expect_property_change (display
, window
, property
, state
)
844 Lisp_Object property
;
847 struct prop_location
*pl
848 = (struct prop_location
*) xmalloc (sizeof (struct prop_location
));
849 pl
->identifier
= ++prop_location_identifier
;
850 pl
->display
= display
;
852 pl
->property
= property
;
853 pl
->desired_state
= state
;
854 pl
->next
= property_change_wait_list
;
856 property_change_wait_list
= pl
;
860 /* Delete an entry from the list of property changes we are waiting for.
861 IDENTIFIER is the number that uniquely identifies the entry. */
864 unexpect_property_change (location
)
865 struct prop_location
*location
;
867 struct prop_location
*prev
= 0, *rest
= property_change_wait_list
;
870 if (rest
== location
)
873 prev
->next
= rest
->next
;
875 property_change_wait_list
= rest
->next
;
884 /* Remove the property change expectation element for IDENTIFIER. */
887 wait_for_property_change_unwind (identifierval
)
888 Lisp_Object identifierval
;
890 unexpect_property_change (XPNTR (identifierval
));
893 /* Actually wait for a property change.
894 IDENTIFIER should be the value that expect_property_change returned. */
897 wait_for_property_change (location
)
898 struct prop_location
*location
;
901 int count
= specpdl_ptr
- specpdl
;
904 XSETCONS (tem
, location
);
906 /* Make sure to do unexpect_property_change if we quit or err. */
907 record_unwind_protect (wait_for_property_change_unwind
, tem
);
909 XCONS (property_change_reply
)->car
= Qnil
;
911 if (! location
->arrived
)
913 property_change_reply_object
= location
;
914 secs
= x_selection_timeout
/ 1000;
915 usecs
= (x_selection_timeout
% 1000) * 1000;
916 wait_reading_process_input (secs
, usecs
, property_change_reply
, 0);
918 if (NILP (XCONS (property_change_reply
)->car
))
919 error ("timed out waiting for property-notify event");
922 unbind_to (count
, Qnil
);
925 /* Called from XTread_socket in response to a PropertyNotify event. */
928 x_handle_property_notify (event
)
929 XPropertyEvent
*event
;
931 struct prop_location
*prev
= 0, *rest
= property_change_wait_list
;
934 if (rest
->property
== event
->atom
935 && rest
->window
== event
->window
936 && rest
->display
== event
->display
937 && rest
->desired_state
== event
->state
)
940 fprintf (stderr
, "Saw expected prop-%s on %s\n",
941 (event
->state
== PropertyDelete
? "delete" : "change"),
942 (char *) XSYMBOL (x_atom_to_symbol (dpyinfo
, event
->display
,
949 /* If this is the one wait_for_property_change is waiting for,
950 tell it to wake up. */
951 if (rest
== property_change_reply_object
)
952 XCONS (property_change_reply
)->car
= Qt
;
955 prev
->next
= rest
->next
;
957 property_change_wait_list
= rest
->next
;
965 fprintf (stderr
, "Saw UNexpected prop-%s on %s\n",
966 (event
->state
== PropertyDelete
? "delete" : "change"),
967 (char *) XSYMBOL (x_atom_to_symbol (dpyinfo
,
968 event
->display
, event
->atom
))
975 #if 0 /* #### MULTIPLE doesn't work yet */
978 fetch_multiple_target (event
)
979 XSelectionRequestEvent
*event
;
981 Display
*display
= event
->display
;
982 Window window
= event
->requestor
;
983 Atom target
= event
->target
;
984 Atom selection_atom
= event
->selection
;
989 x_get_window_property_as_lisp_data (display
, window
, target
,
990 QMULTIPLE
, selection_atom
));
994 copy_multiple_data (obj
)
1001 return Fcons (XCONS (obj
)->car
, copy_multiple_data (XCONS (obj
)->cdr
));
1003 CHECK_VECTOR (obj
, 0);
1004 vec
= Fmake_vector (size
= XVECTOR (obj
)->size
, Qnil
);
1005 for (i
= 0; i
< size
; i
++)
1007 Lisp_Object vec2
= XVECTOR (obj
)->contents
[i
];
1008 CHECK_VECTOR (vec2
, 0);
1009 if (XVECTOR (vec2
)->size
!= 2)
1010 /* ??? Confusing error message */
1011 Fsignal (Qerror
, Fcons (build_string ("vectors must be of length 2"),
1012 Fcons (vec2
, Qnil
)));
1013 XVECTOR (vec
)->contents
[i
] = Fmake_vector (2, Qnil
);
1014 XVECTOR (XVECTOR (vec
)->contents
[i
])->contents
[0]
1015 = XVECTOR (vec2
)->contents
[0];
1016 XVECTOR (XVECTOR (vec
)->contents
[i
])->contents
[1]
1017 = XVECTOR (vec2
)->contents
[1];
1025 /* Variables for communication with x_handle_selection_notify. */
1026 static Atom reading_which_selection
;
1027 static Lisp_Object reading_selection_reply
;
1028 static Window reading_selection_window
;
1030 /* Do protocol to read selection-data from the server.
1031 Converts this to Lisp data and returns it. */
1034 x_get_foreign_selection (selection_symbol
, target_type
)
1035 Lisp_Object selection_symbol
, target_type
;
1037 Window requestor_window
= FRAME_X_WINDOW (selected_frame
);
1038 Display
*display
= FRAME_X_DISPLAY (selected_frame
);
1039 struct x_display_info
*dpyinfo
= FRAME_X_DISPLAY_INFO (selected_frame
);
1040 Time requestor_time
= last_event_timestamp
;
1041 Atom target_property
= dpyinfo
->Xatom_EMACS_TMP
;
1042 Atom selection_atom
= symbol_to_x_atom (dpyinfo
, display
, selection_symbol
);
1046 if (CONSP (target_type
))
1047 type_atom
= symbol_to_x_atom (dpyinfo
, display
, XCONS (target_type
)->car
);
1049 type_atom
= symbol_to_x_atom (dpyinfo
, display
, target_type
);
1052 x_catch_errors (selected_frame
);
1053 XConvertSelection (display
, selection_atom
, type_atom
, target_property
,
1054 requestor_window
, requestor_time
);
1057 /* Prepare to block until the reply has been read. */
1058 reading_selection_window
= requestor_window
;
1059 reading_which_selection
= selection_atom
;
1060 XCONS (reading_selection_reply
)->car
= Qnil
;
1061 x_start_queuing_selection_requests (selected_frame
);
1064 /* This allows quits. Also, don't wait forever. */
1065 secs
= x_selection_timeout
/ 1000;
1066 usecs
= (x_selection_timeout
% 1000) * 1000;
1067 wait_reading_process_input (secs
, usecs
, reading_selection_reply
, 0);
1070 x_check_errors (selected_frame
, "Cannot get selection: %s");
1071 x_uncatch_errors (selected_frame
);
1072 x_stop_queuing_selection_requests (selected_frame
);
1075 if (NILP (XCONS (reading_selection_reply
)->car
))
1076 error ("timed out waiting for reply from selection owner");
1078 /* Otherwise, the selection is waiting for us on the requested property. */
1080 x_get_window_property_as_lisp_data (display
, requestor_window
,
1081 target_property
, target_type
,
1085 /* Subroutines of x_get_window_property_as_lisp_data */
1088 x_get_window_property (display
, window
, property
, data_ret
, bytes_ret
,
1089 actual_type_ret
, actual_format_ret
, actual_size_ret
,
1094 unsigned char **data_ret
;
1096 Atom
*actual_type_ret
;
1097 int *actual_format_ret
;
1098 unsigned long *actual_size_ret
;
1102 unsigned long bytes_remaining
;
1104 unsigned char *tmp_data
= 0;
1106 int buffer_size
= SELECTION_QUANTUM (display
);
1107 if (buffer_size
> MAX_SELECTION_QUANTUM
) buffer_size
= MAX_SELECTION_QUANTUM
;
1110 /* First probe the thing to find out how big it is. */
1111 result
= XGetWindowProperty (display
, window
, property
,
1112 0, 0, False
, AnyPropertyType
,
1113 actual_type_ret
, actual_format_ret
,
1115 &bytes_remaining
, &tmp_data
);
1116 if (result
!= Success
)
1123 xfree ((char *) tmp_data
);
1125 if (*actual_type_ret
== None
|| *actual_format_ret
== 0)
1131 total_size
= bytes_remaining
+ 1;
1132 *data_ret
= (unsigned char *) xmalloc (total_size
);
1134 /* Now read, until weve gotten it all. */
1135 while (bytes_remaining
)
1138 int last
= bytes_remaining
;
1141 = XGetWindowProperty (display
, window
, property
,
1142 offset
/4, buffer_size
/4,
1145 actual_type_ret
, actual_format_ret
,
1146 actual_size_ret
, &bytes_remaining
, &tmp_data
);
1148 fprintf (stderr
, "<< read %d\n", last
-bytes_remaining
);
1150 /* If this doesn't return Success at this point, it means that
1151 some clod deleted the selection while we were in the midst of
1152 reading it. Deal with that, I guess....
1154 if (result
!= Success
) break;
1155 *actual_size_ret
*= *actual_format_ret
/ 8;
1156 bcopy (tmp_data
, (*data_ret
) + offset
, *actual_size_ret
);
1157 offset
+= *actual_size_ret
;
1158 xfree ((char *) tmp_data
);
1163 *bytes_ret
= offset
;
1167 receive_incremental_selection (display
, window
, property
, target_type
,
1168 min_size_bytes
, data_ret
, size_bytes_ret
,
1169 type_ret
, format_ret
, size_ret
)
1173 Lisp_Object target_type
; /* for error messages only */
1174 unsigned int min_size_bytes
;
1175 unsigned char **data_ret
;
1176 int *size_bytes_ret
;
1178 unsigned long *size_ret
;
1182 struct prop_location
*wait_object
;
1183 *size_bytes_ret
= min_size_bytes
;
1184 *data_ret
= (unsigned char *) xmalloc (*size_bytes_ret
);
1186 fprintf (stderr
, "\nread INCR %d\n", min_size_bytes
);
1189 /* At this point, we have read an INCR property.
1190 Delete the property to ack it.
1191 (But first, prepare to receive the next event in this handshake.)
1193 Now, we must loop, waiting for the sending window to put a value on
1194 that property, then reading the property, then deleting it to ack.
1195 We are done when the sender places a property of length 0.
1198 XSelectInput (display
, window
, STANDARD_EVENT_SET
| PropertyChangeMask
);
1199 XDeleteProperty (display
, window
, property
);
1200 wait_object
= expect_property_change (display
, window
, property
,
1207 unsigned char *tmp_data
;
1209 wait_for_property_change (wait_object
);
1210 /* expect it again immediately, because x_get_window_property may
1211 .. no it wont, I dont get it.
1212 .. Ok, I get it now, the Xt code that implements INCR is broken.
1214 x_get_window_property (display
, window
, property
,
1215 &tmp_data
, &tmp_size_bytes
,
1216 type_ret
, format_ret
, size_ret
, 1);
1218 if (tmp_size_bytes
== 0) /* we're done */
1221 fprintf (stderr
, " read INCR done\n");
1223 if (! waiting_for_other_props_on_window (display
, window
))
1224 XSelectInput (display
, window
, STANDARD_EVENT_SET
);
1225 unexpect_property_change (wait_object
);
1226 if (tmp_data
) xfree (tmp_data
);
1231 XDeleteProperty (display
, window
, property
);
1232 wait_object
= expect_property_change (display
, window
, property
,
1238 fprintf (stderr
, " read INCR %d\n", tmp_size_bytes
);
1240 if (*size_bytes_ret
< offset
+ tmp_size_bytes
)
1243 fprintf (stderr
, " read INCR realloc %d -> %d\n",
1244 *size_bytes_ret
, offset
+ tmp_size_bytes
);
1246 *size_bytes_ret
= offset
+ tmp_size_bytes
;
1247 *data_ret
= (unsigned char *) xrealloc (*data_ret
, *size_bytes_ret
);
1249 bcopy (tmp_data
, (*data_ret
) + offset
, tmp_size_bytes
);
1250 offset
+= tmp_size_bytes
;
1255 /* Once a requested selection is "ready" (we got a SelectionNotify event),
1256 fetch value from property PROPERTY of X window WINDOW on display DISPLAY.
1257 TARGET_TYPE and SELECTION_ATOM are used in error message if this fails. */
1260 x_get_window_property_as_lisp_data (display
, window
, property
, target_type
,
1265 Lisp_Object target_type
; /* for error messages only */
1266 Atom selection_atom
; /* for error messages only */
1270 unsigned long actual_size
;
1271 unsigned char *data
= 0;
1274 struct x_display_info
*dpyinfo
= x_display_info_for_display (display
);
1276 x_get_window_property (display
, window
, property
, &data
, &bytes
,
1277 &actual_type
, &actual_format
, &actual_size
, 1);
1280 int there_is_a_selection_owner
;
1282 there_is_a_selection_owner
1283 = XGetSelectionOwner (display
, selection_atom
);
1285 while (1) /* Note debugger can no longer return, so this is obsolete */
1287 there_is_a_selection_owner
?
1288 Fcons (build_string ("selection owner couldn't convert"),
1290 ? Fcons (target_type
,
1291 Fcons (x_atom_to_symbol (dpyinfo
, display
,
1294 : Fcons (target_type
, Qnil
))
1295 : Fcons (build_string ("no selection"),
1296 Fcons (x_atom_to_symbol (dpyinfo
, display
,
1301 if (actual_type
== dpyinfo
->Xatom_INCR
)
1303 /* That wasn't really the data, just the beginning. */
1305 unsigned int min_size_bytes
= * ((unsigned int *) data
);
1307 XFree ((char *) data
);
1309 receive_incremental_selection (display
, window
, property
, target_type
,
1310 min_size_bytes
, &data
, &bytes
,
1311 &actual_type
, &actual_format
,
1316 XDeleteProperty (display
, window
, property
);
1320 /* It's been read. Now convert it to a lisp object in some semi-rational
1322 val
= selection_data_to_lisp_data (display
, data
, bytes
,
1323 actual_type
, actual_format
);
1325 xfree ((char *) data
);
1329 /* These functions convert from the selection data read from the server into
1330 something that we can use from Lisp, and vice versa.
1332 Type: Format: Size: Lisp Type:
1333 ----- ------- ----- -----------
1336 ATOM 32 > 1 Vector of Symbols
1338 * 16 > 1 Vector of Integers
1339 * 32 1 if <=16 bits: Integer
1340 if > 16 bits: Cons of top16, bot16
1341 * 32 > 1 Vector of the above
1343 When converting a Lisp number to C, it is assumed to be of format 16 if
1344 it is an integer, and of format 32 if it is a cons of two integers.
1346 When converting a vector of numbers from Lisp to C, it is assumed to be
1347 of format 16 if every element in the vector is an integer, and is assumed
1348 to be of format 32 if any element is a cons of two integers.
1350 When converting an object to C, it may be of the form (SYMBOL . <data>)
1351 where SYMBOL is what we should claim that the type is. Format and
1352 representation are as above. */
1357 selection_data_to_lisp_data (display
, data
, size
, type
, format
)
1359 unsigned char *data
;
1363 struct x_display_info
*dpyinfo
= x_display_info_for_display (display
);
1365 if (type
== dpyinfo
->Xatom_NULL
)
1368 /* Convert any 8-bit data to a string, for compactness. */
1369 else if (format
== 8)
1370 return make_string ((char *) data
, size
);
1372 /* Convert a single atom to a Lisp_Symbol. Convert a set of atoms to
1373 a vector of symbols.
1375 else if (type
== XA_ATOM
)
1378 if (size
== sizeof (Atom
))
1379 return x_atom_to_symbol (dpyinfo
, display
, *((Atom
*) data
));
1382 Lisp_Object v
= Fmake_vector (size
/ sizeof (Atom
), 0);
1383 for (i
= 0; i
< size
/ sizeof (Atom
); i
++)
1384 Faset (v
, i
, x_atom_to_symbol (dpyinfo
, display
,
1385 ((Atom
*) data
) [i
]));
1390 /* Convert a single 16 or small 32 bit number to a Lisp_Int.
1391 If the number is > 16 bits, convert it to a cons of integers,
1392 16 bits in each half.
1394 else if (format
== 32 && size
== sizeof (long))
1395 return long_to_cons (((unsigned long *) data
) [0]);
1396 else if (format
== 16 && size
== sizeof (short))
1397 return make_number ((int) (((unsigned short *) data
) [0]));
1399 /* Convert any other kind of data to a vector of numbers, represented
1400 as above (as an integer, or a cons of two 16 bit integers.)
1402 else if (format
== 16)
1405 Lisp_Object v
= Fmake_vector (size
/ 4, 0);
1406 for (i
= 0; i
< size
/ 4; i
++)
1408 int j
= (int) ((unsigned short *) data
) [i
];
1409 Faset (v
, i
, make_number (j
));
1416 Lisp_Object v
= Fmake_vector (size
/ 4, 0);
1417 for (i
= 0; i
< size
/ 4; i
++)
1419 unsigned long j
= ((unsigned long *) data
) [i
];
1420 Faset (v
, i
, long_to_cons (j
));
1428 lisp_data_to_selection_data (display
, obj
,
1429 data_ret
, type_ret
, size_ret
,
1430 format_ret
, nofree_ret
)
1433 unsigned char **data_ret
;
1435 unsigned int *size_ret
;
1439 Lisp_Object type
= Qnil
;
1440 struct x_display_info
*dpyinfo
= x_display_info_for_display (display
);
1444 if (CONSP (obj
) && SYMBOLP (XCONS (obj
)->car
))
1446 type
= XCONS (obj
)->car
;
1447 obj
= XCONS (obj
)->cdr
;
1448 if (CONSP (obj
) && NILP (XCONS (obj
)->cdr
))
1449 obj
= XCONS (obj
)->car
;
1452 if (EQ (obj
, QNULL
) || (EQ (type
, QNULL
)))
1453 { /* This is not the same as declining */
1459 else if (STRINGP (obj
))
1462 *size_ret
= XSTRING (obj
)->size
;
1463 *data_ret
= XSTRING (obj
)->data
;
1465 if (NILP (type
)) type
= QSTRING
;
1467 else if (SYMBOLP (obj
))
1471 *data_ret
= (unsigned char *) xmalloc (sizeof (Atom
) + 1);
1472 (*data_ret
) [sizeof (Atom
)] = 0;
1473 (*(Atom
**) data_ret
) [0] = symbol_to_x_atom (dpyinfo
, display
, obj
);
1474 if (NILP (type
)) type
= QATOM
;
1476 else if (INTEGERP (obj
)
1477 && XINT (obj
) < 0xFFFF
1478 && XINT (obj
) > -0xFFFF)
1482 *data_ret
= (unsigned char *) xmalloc (sizeof (short) + 1);
1483 (*data_ret
) [sizeof (short)] = 0;
1484 (*(short **) data_ret
) [0] = (short) XINT (obj
);
1485 if (NILP (type
)) type
= QINTEGER
;
1487 else if (INTEGERP (obj
)
1488 || (CONSP (obj
) && INTEGERP (XCONS (obj
)->car
)
1489 && (INTEGERP (XCONS (obj
)->cdr
)
1490 || (CONSP (XCONS (obj
)->cdr
)
1491 && INTEGERP (XCONS (XCONS (obj
)->cdr
)->car
)))))
1495 *data_ret
= (unsigned char *) xmalloc (sizeof (long) + 1);
1496 (*data_ret
) [sizeof (long)] = 0;
1497 (*(unsigned long **) data_ret
) [0] = cons_to_long (obj
);
1498 if (NILP (type
)) type
= QINTEGER
;
1500 else if (VECTORP (obj
))
1502 /* Lisp_Vectors may represent a set of ATOMs;
1503 a set of 16 or 32 bit INTEGERs;
1504 or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...]
1508 if (SYMBOLP (XVECTOR (obj
)->contents
[0]))
1509 /* This vector is an ATOM set */
1511 if (NILP (type
)) type
= QATOM
;
1512 *size_ret
= XVECTOR (obj
)->size
;
1514 *data_ret
= (unsigned char *) xmalloc ((*size_ret
) * sizeof (Atom
));
1515 for (i
= 0; i
< *size_ret
; i
++)
1516 if (SYMBOLP (XVECTOR (obj
)->contents
[i
]))
1517 (*(Atom
**) data_ret
) [i
]
1518 = symbol_to_x_atom (dpyinfo
, display
, XVECTOR (obj
)->contents
[i
]);
1520 Fsignal (Qerror
, /* Qselection_error */
1522 ("all elements of selection vector must have same type"),
1523 Fcons (obj
, Qnil
)));
1525 #if 0 /* #### MULTIPLE doesn't work yet */
1526 else if (VECTORP (XVECTOR (obj
)->contents
[0]))
1527 /* This vector is an ATOM_PAIR set */
1529 if (NILP (type
)) type
= QATOM_PAIR
;
1530 *size_ret
= XVECTOR (obj
)->size
;
1532 *data_ret
= (unsigned char *)
1533 xmalloc ((*size_ret
) * sizeof (Atom
) * 2);
1534 for (i
= 0; i
< *size_ret
; i
++)
1535 if (VECTORP (XVECTOR (obj
)->contents
[i
]))
1537 Lisp_Object pair
= XVECTOR (obj
)->contents
[i
];
1538 if (XVECTOR (pair
)->size
!= 2)
1541 ("elements of the vector must be vectors of exactly two elements"),
1542 Fcons (pair
, Qnil
)));
1544 (*(Atom
**) data_ret
) [i
* 2]
1545 = symbol_to_x_atom (dpyinfo
, display
,
1546 XVECTOR (pair
)->contents
[0]);
1547 (*(Atom
**) data_ret
) [(i
* 2) + 1]
1548 = symbol_to_x_atom (dpyinfo
, display
,
1549 XVECTOR (pair
)->contents
[1]);
1554 ("all elements of the vector must be of the same type"),
1555 Fcons (obj
, Qnil
)));
1560 /* This vector is an INTEGER set, or something like it */
1562 *size_ret
= XVECTOR (obj
)->size
;
1563 if (NILP (type
)) type
= QINTEGER
;
1565 for (i
= 0; i
< *size_ret
; i
++)
1566 if (CONSP (XVECTOR (obj
)->contents
[i
]))
1568 else if (!INTEGERP (XVECTOR (obj
)->contents
[i
]))
1569 Fsignal (Qerror
, /* Qselection_error */
1571 ("elements of selection vector must be integers or conses of integers"),
1572 Fcons (obj
, Qnil
)));
1574 *data_ret
= (unsigned char *) xmalloc (*size_ret
* (*format_ret
/8));
1575 for (i
= 0; i
< *size_ret
; i
++)
1576 if (*format_ret
== 32)
1577 (*((unsigned long **) data_ret
)) [i
]
1578 = cons_to_long (XVECTOR (obj
)->contents
[i
]);
1580 (*((unsigned short **) data_ret
)) [i
]
1581 = (unsigned short) cons_to_long (XVECTOR (obj
)->contents
[i
]);
1585 Fsignal (Qerror
, /* Qselection_error */
1586 Fcons (build_string ("unrecognised selection data"),
1587 Fcons (obj
, Qnil
)));
1589 *type_ret
= symbol_to_x_atom (dpyinfo
, display
, type
);
1593 clean_local_selection_data (obj
)
1597 && INTEGERP (XCONS (obj
)->car
)
1598 && CONSP (XCONS (obj
)->cdr
)
1599 && INTEGERP (XCONS (XCONS (obj
)->cdr
)->car
)
1600 && NILP (XCONS (XCONS (obj
)->cdr
)->cdr
))
1601 obj
= Fcons (XCONS (obj
)->car
, XCONS (obj
)->cdr
);
1604 && INTEGERP (XCONS (obj
)->car
)
1605 && INTEGERP (XCONS (obj
)->cdr
))
1607 if (XINT (XCONS (obj
)->car
) == 0)
1608 return XCONS (obj
)->cdr
;
1609 if (XINT (XCONS (obj
)->car
) == -1)
1610 return make_number (- XINT (XCONS (obj
)->cdr
));
1615 int size
= XVECTOR (obj
)->size
;
1618 return clean_local_selection_data (XVECTOR (obj
)->contents
[0]);
1619 copy
= Fmake_vector (size
, Qnil
);
1620 for (i
= 0; i
< size
; i
++)
1621 XVECTOR (copy
)->contents
[i
]
1622 = clean_local_selection_data (XVECTOR (obj
)->contents
[i
]);
1628 /* Called from XTread_socket to handle SelectionNotify events.
1629 If it's the selection we are waiting for, stop waiting. */
1632 x_handle_selection_notify (event
)
1633 XSelectionEvent
*event
;
1635 if (event
->requestor
!= reading_selection_window
)
1637 if (event
->selection
!= reading_which_selection
)
1640 XCONS (reading_selection_reply
)->car
= Qt
;
1644 DEFUN ("x-own-selection-internal",
1645 Fx_own_selection_internal
, Sx_own_selection_internal
,
1647 "Assert an X selection of the given TYPE with the given VALUE.\n\
1648 TYPE is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\
1649 \(Those are literal upper-case symbol names, since that's what X expects.)\n\
1650 VALUE is typically a string, or a cons of two markers, but may be\n\
1651 anything that the functions on `selection-converter-alist' know about.")
1652 (selection_name
, selection_value
)
1653 Lisp_Object selection_name
, selection_value
;
1656 CHECK_SYMBOL (selection_name
, 0);
1657 if (NILP (selection_value
)) error ("selection-value may not be nil.");
1658 x_own_selection (selection_name
, selection_value
);
1659 return selection_value
;
1663 /* Request the selection value from the owner. If we are the owner,
1664 simply return our selection value. If we are not the owner, this
1665 will block until all of the data has arrived. */
1667 DEFUN ("x-get-selection-internal",
1668 Fx_get_selection_internal
, Sx_get_selection_internal
, 2, 2, 0,
1669 "Return text selected from some X window.\n\
1670 SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\
1671 \(Those are literal upper-case symbol names, since that's what X expects.)\n\
1672 TYPE is the type of data desired, typically `STRING'.")
1673 (selection_symbol
, target_type
)
1674 Lisp_Object selection_symbol
, target_type
;
1676 Lisp_Object val
= Qnil
;
1677 struct gcpro gcpro1
, gcpro2
;
1678 GCPRO2 (target_type
, val
); /* we store newly consed data into these */
1680 CHECK_SYMBOL (selection_symbol
, 0);
1682 #if 0 /* #### MULTIPLE doesn't work yet */
1683 if (CONSP (target_type
)
1684 && XCONS (target_type
)->car
== QMULTIPLE
)
1686 CHECK_VECTOR (XCONS (target_type
)->cdr
, 0);
1687 /* So we don't destructively modify this... */
1688 target_type
= copy_multiple_data (target_type
);
1692 CHECK_SYMBOL (target_type
, 0);
1694 val
= x_get_local_selection (selection_symbol
, target_type
);
1698 val
= x_get_foreign_selection (selection_symbol
, target_type
);
1703 && SYMBOLP (XCONS (val
)->car
))
1705 val
= XCONS (val
)->cdr
;
1706 if (CONSP (val
) && NILP (XCONS (val
)->cdr
))
1707 val
= XCONS (val
)->car
;
1709 val
= clean_local_selection_data (val
);
1715 DEFUN ("x-disown-selection-internal",
1716 Fx_disown_selection_internal
, Sx_disown_selection_internal
, 1, 2, 0,
1717 "If we own the selection SELECTION, disown it.\n\
1718 Disowning it means there is no such selection.")
1720 Lisp_Object selection
;
1724 Atom selection_atom
;
1725 XSelectionClearEvent event
;
1727 struct x_display_info
*dpyinfo
;
1730 display
= FRAME_X_DISPLAY (selected_frame
);
1731 dpyinfo
= FRAME_X_DISPLAY_INFO (selected_frame
);
1732 CHECK_SYMBOL (selection
, 0);
1734 timestamp
= last_event_timestamp
;
1736 timestamp
= cons_to_long (time
);
1738 if (NILP (assq_no_quit (selection
, Vselection_alist
)))
1739 return Qnil
; /* Don't disown the selection when we're not the owner. */
1741 selection_atom
= symbol_to_x_atom (dpyinfo
, display
, selection
);
1744 XSetSelectionOwner (display
, selection_atom
, None
, timestamp
);
1747 /* It doesn't seem to be guaranteed that a SelectionClear event will be
1748 generated for a window which owns the selection when that window sets
1749 the selection owner to None. The NCD server does, the MIT Sun4 server
1750 doesn't. So we synthesize one; this means we might get two, but
1751 that's ok, because the second one won't have any effect. */
1752 SELECTION_EVENT_DISPLAY (&event
) = display
;
1753 SELECTION_EVENT_SELECTION (&event
) = selection_atom
;
1754 SELECTION_EVENT_TIME (&event
) = timestamp
;
1755 x_handle_selection_clear (&event
);
1760 /* Get rid of all the selections in buffer BUFFER.
1761 This is used when we kill a buffer. */
1764 x_disown_buffer_selections (buffer
)
1768 struct buffer
*buf
= XBUFFER (buffer
);
1770 for (tail
= Vselection_alist
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
1772 Lisp_Object elt
, value
;
1773 elt
= XCONS (tail
)->car
;
1774 value
= XCONS (elt
)->cdr
;
1775 if (CONSP (value
) && MARKERP (XCONS (value
)->car
)
1776 && XMARKER (XCONS (value
)->car
)->buffer
== buf
)
1777 Fx_disown_selection_internal (XCONS (elt
)->car
, Qnil
);
1781 DEFUN ("x-selection-owner-p", Fx_selection_owner_p
, Sx_selection_owner_p
,
1783 "Whether the current Emacs process owns the given X Selection.\n\
1784 The arg should be the name of the selection in question, typically one of\n\
1785 the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\
1786 \(Those are literal upper-case symbol names, since that's what X expects.)\n\
1787 For convenience, the symbol nil is the same as `PRIMARY',\n\
1788 and t is the same as `SECONDARY'.)")
1790 Lisp_Object selection
;
1793 CHECK_SYMBOL (selection
, 0);
1794 if (EQ (selection
, Qnil
)) selection
= QPRIMARY
;
1795 if (EQ (selection
, Qt
)) selection
= QSECONDARY
;
1797 if (NILP (Fassq (selection
, Vselection_alist
)))
1802 DEFUN ("x-selection-exists-p", Fx_selection_exists_p
, Sx_selection_exists_p
,
1804 "Whether there is an owner for the given X Selection.\n\
1805 The arg should be the name of the selection in question, typically one of\n\
1806 the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\
1807 \(Those are literal upper-case symbol names, since that's what X expects.)\n\
1808 For convenience, the symbol nil is the same as `PRIMARY',\n\
1809 and t is the same as `SECONDARY'.)")
1811 Lisp_Object selection
;
1817 /* It should be safe to call this before we have an X frame. */
1818 if (! FRAME_X_P (selected_frame
))
1821 dpy
= FRAME_X_DISPLAY (selected_frame
);
1822 CHECK_SYMBOL (selection
, 0);
1823 if (!NILP (Fx_selection_owner_p (selection
)))
1825 if (EQ (selection
, Qnil
)) selection
= QPRIMARY
;
1826 if (EQ (selection
, Qt
)) selection
= QSECONDARY
;
1827 atom
= symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame
),
1832 owner
= XGetSelectionOwner (dpy
, atom
);
1834 return (owner
? Qt
: Qnil
);
1838 #ifdef CUT_BUFFER_SUPPORT
1840 static int cut_buffers_initialized
; /* Whether we're sure they all exist */
1842 /* Ensure that all 8 cut buffers exist. ICCCM says we gotta... */
1844 initialize_cut_buffers (display
, window
)
1848 unsigned char *data
= (unsigned char *) "";
1850 #define FROB(atom) XChangeProperty (display, window, atom, XA_STRING, 8, \
1851 PropModeAppend, data, 0)
1852 FROB (XA_CUT_BUFFER0
);
1853 FROB (XA_CUT_BUFFER1
);
1854 FROB (XA_CUT_BUFFER2
);
1855 FROB (XA_CUT_BUFFER3
);
1856 FROB (XA_CUT_BUFFER4
);
1857 FROB (XA_CUT_BUFFER5
);
1858 FROB (XA_CUT_BUFFER6
);
1859 FROB (XA_CUT_BUFFER7
);
1862 cut_buffers_initialized
= 1;
1866 #define CHECK_CUT_BUFFER(symbol,n) \
1867 { CHECK_SYMBOL ((symbol), (n)); \
1868 if (!EQ((symbol), QCUT_BUFFER0) && !EQ((symbol), QCUT_BUFFER1) \
1869 && !EQ((symbol), QCUT_BUFFER2) && !EQ((symbol), QCUT_BUFFER3) \
1870 && !EQ((symbol), QCUT_BUFFER4) && !EQ((symbol), QCUT_BUFFER5) \
1871 && !EQ((symbol), QCUT_BUFFER6) && !EQ((symbol), QCUT_BUFFER7)) \
1873 Fcons (build_string ("doesn't name a cut buffer"), \
1874 Fcons ((symbol), Qnil))); \
1877 DEFUN ("x-get-cut-buffer-internal", Fx_get_cut_buffer_internal
,
1878 Sx_get_cut_buffer_internal
, 1, 1, 0,
1879 "Returns the value of the named cut buffer (typically CUT_BUFFER0).")
1885 unsigned char *data
;
1892 struct x_display_info
*dpyinfo
;
1895 display
= FRAME_X_DISPLAY (selected_frame
);
1896 dpyinfo
= FRAME_X_DISPLAY_INFO (selected_frame
);
1897 window
= RootWindow (display
, 0); /* Cut buffers are on screen 0 */
1898 CHECK_CUT_BUFFER (buffer
, 0);
1899 buffer_atom
= symbol_to_x_atom (dpyinfo
, display
, buffer
);
1901 x_get_window_property (display
, window
, buffer_atom
, &data
, &bytes
,
1902 &type
, &format
, &size
, 0);
1903 if (!data
) return Qnil
;
1905 if (format
!= 8 || type
!= XA_STRING
)
1907 Fcons (build_string ("cut buffer doesn't contain 8-bit data"),
1908 Fcons (x_atom_to_symbol (dpyinfo
, display
, type
),
1909 Fcons (make_number (format
), Qnil
))));
1911 ret
= (bytes
? make_string ((char *) data
, bytes
) : Qnil
);
1917 DEFUN ("x-store-cut-buffer-internal", Fx_store_cut_buffer_internal
,
1918 Sx_store_cut_buffer_internal
, 2, 2, 0,
1919 "Sets the value of the named cut buffer (typically CUT_BUFFER0).")
1921 Lisp_Object buffer
, string
;
1925 unsigned char *data
;
1927 int bytes_remaining
;
1932 display
= FRAME_X_DISPLAY (selected_frame
);
1933 window
= RootWindow (display
, 0); /* Cut buffers are on screen 0 */
1935 max_bytes
= SELECTION_QUANTUM (display
);
1936 if (max_bytes
> MAX_SELECTION_QUANTUM
)
1937 max_bytes
= MAX_SELECTION_QUANTUM
;
1939 CHECK_CUT_BUFFER (buffer
, 0);
1940 CHECK_STRING (string
, 0);
1941 buffer_atom
= symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame
),
1943 data
= (unsigned char *) XSTRING (string
)->data
;
1944 bytes
= XSTRING (string
)->size
;
1945 bytes_remaining
= bytes
;
1947 if (! cut_buffers_initialized
) initialize_cut_buffers (display
, window
);
1951 /* Don't mess up with an empty value. */
1952 if (!bytes_remaining
)
1953 XChangeProperty (display
, window
, buffer_atom
, XA_STRING
, 8,
1954 PropModeReplace
, data
, 0);
1956 while (bytes_remaining
)
1958 int chunk
= (bytes_remaining
< max_bytes
1959 ? bytes_remaining
: max_bytes
);
1960 XChangeProperty (display
, window
, buffer_atom
, XA_STRING
, 8,
1961 (bytes_remaining
== bytes
1966 bytes_remaining
-= chunk
;
1973 DEFUN ("x-rotate-cut-buffers-internal", Fx_rotate_cut_buffers_internal
,
1974 Sx_rotate_cut_buffers_internal
, 1, 1, 0,
1975 "Rotate the values of the cut buffers by the given number of steps;\n\
1976 positive means move values forward, negative means backward.")
1985 display
= FRAME_X_DISPLAY (selected_frame
);
1986 window
= RootWindow (display
, 0); /* Cut buffers are on screen 0 */
1987 CHECK_NUMBER (n
, 0);
1990 if (! cut_buffers_initialized
)
1991 initialize_cut_buffers (display
, window
);
1993 props
[0] = XA_CUT_BUFFER0
;
1994 props
[1] = XA_CUT_BUFFER1
;
1995 props
[2] = XA_CUT_BUFFER2
;
1996 props
[3] = XA_CUT_BUFFER3
;
1997 props
[4] = XA_CUT_BUFFER4
;
1998 props
[5] = XA_CUT_BUFFER5
;
1999 props
[6] = XA_CUT_BUFFER6
;
2000 props
[7] = XA_CUT_BUFFER7
;
2002 XRotateWindowProperties (display
, window
, props
, 8, XINT (n
));
2012 defsubr (&Sx_get_selection_internal
);
2013 defsubr (&Sx_own_selection_internal
);
2014 defsubr (&Sx_disown_selection_internal
);
2015 defsubr (&Sx_selection_owner_p
);
2016 defsubr (&Sx_selection_exists_p
);
2018 #ifdef CUT_BUFFER_SUPPORT
2019 defsubr (&Sx_get_cut_buffer_internal
);
2020 defsubr (&Sx_store_cut_buffer_internal
);
2021 defsubr (&Sx_rotate_cut_buffers_internal
);
2022 cut_buffers_initialized
= 0;
2025 reading_selection_reply
= Fcons (Qnil
, Qnil
);
2026 staticpro (&reading_selection_reply
);
2027 reading_selection_window
= 0;
2028 reading_which_selection
= 0;
2030 property_change_wait_list
= 0;
2031 prop_location_identifier
= 0;
2032 property_change_reply
= Fcons (Qnil
, Qnil
);
2033 staticpro (&property_change_reply
);
2035 Vselection_alist
= Qnil
;
2036 staticpro (&Vselection_alist
);
2038 DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist
,
2039 "An alist associating X Windows selection-types with functions.\n\
2040 These functions are called to convert the selection, with three args:\n\
2041 the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\
2042 a desired type to which the selection should be converted;\n\
2043 and the local selection value (whatever was given to `x-own-selection').\n\
2045 The function should return the value to send to the X server\n\
2046 \(typically a string). A return value of nil\n\
2047 means that the conversion could not be done.\n\
2048 A return value which is the symbol `NULL'\n\
2049 means that a side-effect was executed,\n\
2050 and there is no meaningful selection value.");
2051 Vselection_converter_alist
= Qnil
;
2053 DEFVAR_LISP ("x-lost-selection-hooks", &Vx_lost_selection_hooks
,
2054 "A list of functions to be called when Emacs loses an X selection.\n\
2055 \(This happens when some other X client makes its own selection\n\
2056 or when a Lisp program explicitly clears the selection.)\n\
2057 The functions are called with one argument, the selection type\n\
2058 \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.)");
2059 Vx_lost_selection_hooks
= Qnil
;
2061 DEFVAR_LISP ("x-sent-selection-hooks", &Vx_sent_selection_hooks
,
2062 "A list of functions to be called when Emacs answers a selection request.\n\
2063 The functions are called with four arguments:\n\
2064 - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\
2065 - the selection-type which Emacs was asked to convert the\n\
2066 selection into before sending (for example, `STRING' or `LENGTH');\n\
2067 - a flag indicating success or failure for responding to the request.\n\
2068 We might have failed (and declined the request) for any number of reasons,\n\
2069 including being asked for a selection that we no longer own, or being asked\n\
2070 to convert into a type that we don't know about or that is inappropriate.\n\
2071 This hook doesn't let you change the behavior of Emacs's selection replies,\n\
2072 it merely informs you that they have happened.");
2073 Vx_sent_selection_hooks
= Qnil
;
2075 DEFVAR_INT ("x-selection-timeout", &x_selection_timeout
,
2076 "Number of milliseconds to wait for a selection reply.\n\
2077 If the selection owner doens't reply in this time, we give up.\n\
2078 A value of 0 means wait as long as necessary. This is initialized from the\n\
2079 \"*selectionTimeout\" resource.");
2080 x_selection_timeout
= 0;
2082 QPRIMARY
= intern ("PRIMARY"); staticpro (&QPRIMARY
);
2083 QSECONDARY
= intern ("SECONDARY"); staticpro (&QSECONDARY
);
2084 QSTRING
= intern ("STRING"); staticpro (&QSTRING
);
2085 QINTEGER
= intern ("INTEGER"); staticpro (&QINTEGER
);
2086 QCLIPBOARD
= intern ("CLIPBOARD"); staticpro (&QCLIPBOARD
);
2087 QTIMESTAMP
= intern ("TIMESTAMP"); staticpro (&QTIMESTAMP
);
2088 QTEXT
= intern ("TEXT"); staticpro (&QTEXT
);
2089 QTIMESTAMP
= intern ("TIMESTAMP"); staticpro (&QTIMESTAMP
);
2090 QDELETE
= intern ("DELETE"); staticpro (&QDELETE
);
2091 QMULTIPLE
= intern ("MULTIPLE"); staticpro (&QMULTIPLE
);
2092 QINCR
= intern ("INCR"); staticpro (&QINCR
);
2093 QEMACS_TMP
= intern ("_EMACS_TMP_"); staticpro (&QEMACS_TMP
);
2094 QTARGETS
= intern ("TARGETS"); staticpro (&QTARGETS
);
2095 QATOM
= intern ("ATOM"); staticpro (&QATOM
);
2096 QATOM_PAIR
= intern ("ATOM_PAIR"); staticpro (&QATOM_PAIR
);
2097 QNULL
= intern ("NULL"); staticpro (&QNULL
);
2099 #ifdef CUT_BUFFER_SUPPORT
2100 QCUT_BUFFER0
= intern ("CUT_BUFFER0"); staticpro (&QCUT_BUFFER0
);
2101 QCUT_BUFFER1
= intern ("CUT_BUFFER1"); staticpro (&QCUT_BUFFER1
);
2102 QCUT_BUFFER2
= intern ("CUT_BUFFER2"); staticpro (&QCUT_BUFFER2
);
2103 QCUT_BUFFER3
= intern ("CUT_BUFFER3"); staticpro (&QCUT_BUFFER3
);
2104 QCUT_BUFFER4
= intern ("CUT_BUFFER4"); staticpro (&QCUT_BUFFER4
);
2105 QCUT_BUFFER5
= intern ("CUT_BUFFER5"); staticpro (&QCUT_BUFFER5
);
2106 QCUT_BUFFER6
= intern ("CUT_BUFFER6"); staticpro (&QCUT_BUFFER6
);
2107 QCUT_BUFFER7
= intern ("CUT_BUFFER7"); staticpro (&QCUT_BUFFER7
);