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2408b3a1 | 1 | /* X Selection processing for Emacs. |
f8c25f1b | 2 | Copyright (C) 1993, 1994, 1995 Free Software Foundation. |
ede4db72 RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
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) | |
9 | any later version. | |
10 | ||
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. | |
15 | ||
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 | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
ede4db72 | 20 | |
c6c5df7f | 21 | |
ede4db72 RS |
22 | /* Rewritten by jwz */ |
23 | ||
18160b98 | 24 | #include <config.h> |
ede4db72 RS |
25 | #include "lisp.h" |
26 | #include "xterm.h" /* for all of the X includes */ | |
7da64e5c RS |
27 | #include "dispextern.h" /* frame.h seems to want this */ |
28 | #include "frame.h" /* Need this to get the X window of selected_frame */ | |
9ac0d9e0 | 29 | #include "blockinput.h" |
7da64e5c RS |
30 | |
31 | #define xfree free | |
ede4db72 RS |
32 | |
33 | #define CUT_BUFFER_SUPPORT | |
34 | ||
ede4db72 RS |
35 | Lisp_Object QPRIMARY, QSECONDARY, QSTRING, QINTEGER, QCLIPBOARD, QTIMESTAMP, |
36 | QTEXT, QDELETE, QMULTIPLE, QINCR, QEMACS_TMP, QTARGETS, QATOM, QNULL, | |
37 | QATOM_PAIR; | |
38 | ||
39 | #ifdef CUT_BUFFER_SUPPORT | |
40 | Lisp_Object QCUT_BUFFER0, QCUT_BUFFER1, QCUT_BUFFER2, QCUT_BUFFER3, | |
41 | QCUT_BUFFER4, QCUT_BUFFER5, QCUT_BUFFER6, QCUT_BUFFER7; | |
42 | #endif | |
43 | ||
8f4f023f RS |
44 | static Lisp_Object Vx_lost_selection_hooks; |
45 | static Lisp_Object Vx_sent_selection_hooks; | |
ede4db72 RS |
46 | |
47 | /* If this is a smaller number than the max-request-size of the display, | |
48 | emacs will use INCR selection transfer when the selection is larger | |
49 | than this. The max-request-size is usually around 64k, so if you want | |
50 | emacs to use incremental selection transfers when the selection is | |
51 | smaller than that, set this. I added this mostly for debugging the | |
8f4f023f | 52 | incremental transfer stuff, but it might improve server performance. */ |
ede4db72 RS |
53 | #define MAX_SELECTION_QUANTUM 0xFFFFFF |
54 | ||
c3498e64 JB |
55 | #ifdef HAVE_X11R4 |
56 | #define SELECTION_QUANTUM(dpy) ((XMaxRequestSize(dpy) << 2) - 100) | |
57 | #else | |
58 | #define SELECTION_QUANTUM(dpy) (((dpy)->max_request_size << 2) - 100) | |
59 | #endif | |
ede4db72 | 60 | |
7da64e5c RS |
61 | /* The timestamp of the last input event Emacs received from the X server. */ |
62 | unsigned long last_event_timestamp; | |
ede4db72 RS |
63 | |
64 | /* This is an association list whose elements are of the form | |
118bd841 RS |
65 | ( SELECTION-NAME SELECTION-VALUE SELECTION-TIMESTAMP FRAME) |
66 | SELECTION-NAME is a lisp symbol, whose name is the name of an X Atom. | |
67 | SELECTION-VALUE is the value that emacs owns for that selection. | |
ede4db72 | 68 | It may be any kind of Lisp object. |
118bd841 | 69 | SELECTION-TIMESTAMP is the time at which emacs began owning this selection, |
ede4db72 | 70 | as a cons of two 16-bit numbers (making a 32 bit time.) |
118bd841 RS |
71 | FRAME is the frame for which we made the selection. |
72 | If there is an entry in this alist, then it can be assumed that Emacs owns | |
ede4db72 RS |
73 | that selection. |
74 | The only (eq) parts of this list that are visible from Lisp are the | |
8f4f023f RS |
75 | selection-values. */ |
76 | static Lisp_Object Vselection_alist; | |
ede4db72 RS |
77 | |
78 | /* This is an alist whose CARs are selection-types (whose names are the same | |
79 | as the names of X Atoms) and whose CDRs are the names of Lisp functions to | |
80 | call to convert the given Emacs selection value to a string representing | |
81 | the given selection type. This is for Lisp-level extension of the emacs | |
8f4f023f RS |
82 | selection handling. */ |
83 | static Lisp_Object Vselection_converter_alist; | |
ede4db72 RS |
84 | |
85 | /* If the selection owner takes too long to reply to a selection request, | |
8f4f023f RS |
86 | we give up on it. This is in milliseconds (0 = no timeout.) */ |
87 | static int x_selection_timeout; | |
ede4db72 RS |
88 | \f |
89 | /* Utility functions */ | |
90 | ||
91 | static void lisp_data_to_selection_data (); | |
92 | static Lisp_Object selection_data_to_lisp_data (); | |
93 | static Lisp_Object x_get_window_property_as_lisp_data (); | |
94 | ||
ede4db72 RS |
95 | /* This converts a Lisp symbol to a server Atom, avoiding a server |
96 | roundtrip whenever possible. */ | |
97 | ||
98 | static Atom | |
5c3a351a RS |
99 | symbol_to_x_atom (dpyinfo, display, sym) |
100 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
101 | Display *display; |
102 | Lisp_Object sym; | |
103 | { | |
104 | Atom val; | |
105 | if (NILP (sym)) return 0; | |
106 | if (EQ (sym, QPRIMARY)) return XA_PRIMARY; | |
107 | if (EQ (sym, QSECONDARY)) return XA_SECONDARY; | |
108 | if (EQ (sym, QSTRING)) return XA_STRING; | |
109 | if (EQ (sym, QINTEGER)) return XA_INTEGER; | |
110 | if (EQ (sym, QATOM)) return XA_ATOM; | |
5c3a351a RS |
111 | if (EQ (sym, QCLIPBOARD)) return dpyinfo->Xatom_CLIPBOARD; |
112 | if (EQ (sym, QTIMESTAMP)) return dpyinfo->Xatom_TIMESTAMP; | |
113 | if (EQ (sym, QTEXT)) return dpyinfo->Xatom_TEXT; | |
114 | if (EQ (sym, QDELETE)) return dpyinfo->Xatom_DELETE; | |
115 | if (EQ (sym, QMULTIPLE)) return dpyinfo->Xatom_MULTIPLE; | |
116 | if (EQ (sym, QINCR)) return dpyinfo->Xatom_INCR; | |
117 | if (EQ (sym, QEMACS_TMP)) return dpyinfo->Xatom_EMACS_TMP; | |
118 | if (EQ (sym, QTARGETS)) return dpyinfo->Xatom_TARGETS; | |
119 | if (EQ (sym, QNULL)) return dpyinfo->Xatom_NULL; | |
ede4db72 RS |
120 | #ifdef CUT_BUFFER_SUPPORT |
121 | if (EQ (sym, QCUT_BUFFER0)) return XA_CUT_BUFFER0; | |
122 | if (EQ (sym, QCUT_BUFFER1)) return XA_CUT_BUFFER1; | |
123 | if (EQ (sym, QCUT_BUFFER2)) return XA_CUT_BUFFER2; | |
124 | if (EQ (sym, QCUT_BUFFER3)) return XA_CUT_BUFFER3; | |
125 | if (EQ (sym, QCUT_BUFFER4)) return XA_CUT_BUFFER4; | |
126 | if (EQ (sym, QCUT_BUFFER5)) return XA_CUT_BUFFER5; | |
127 | if (EQ (sym, QCUT_BUFFER6)) return XA_CUT_BUFFER6; | |
128 | if (EQ (sym, QCUT_BUFFER7)) return XA_CUT_BUFFER7; | |
129 | #endif | |
130 | if (!SYMBOLP (sym)) abort (); | |
131 | ||
132 | #if 0 | |
133 | fprintf (stderr, " XInternAtom %s\n", (char *) XSYMBOL (sym)->name->data); | |
134 | #endif | |
135 | BLOCK_INPUT; | |
136 | val = XInternAtom (display, (char *) XSYMBOL (sym)->name->data, False); | |
137 | UNBLOCK_INPUT; | |
138 | return val; | |
139 | } | |
140 | ||
141 | ||
142 | /* This converts a server Atom to a Lisp symbol, avoiding server roundtrips | |
143 | and calls to intern whenever possible. */ | |
144 | ||
145 | static Lisp_Object | |
5c3a351a RS |
146 | x_atom_to_symbol (dpyinfo, display, atom) |
147 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
148 | Display *display; |
149 | Atom atom; | |
150 | { | |
151 | char *str; | |
152 | Lisp_Object val; | |
153 | if (! atom) return Qnil; | |
7da64e5c RS |
154 | switch (atom) |
155 | { | |
156 | case XA_PRIMARY: | |
157 | return QPRIMARY; | |
158 | case XA_SECONDARY: | |
159 | return QSECONDARY; | |
160 | case XA_STRING: | |
161 | return QSTRING; | |
162 | case XA_INTEGER: | |
163 | return QINTEGER; | |
164 | case XA_ATOM: | |
165 | return QATOM; | |
ede4db72 | 166 | #ifdef CUT_BUFFER_SUPPORT |
7da64e5c RS |
167 | case XA_CUT_BUFFER0: |
168 | return QCUT_BUFFER0; | |
169 | case XA_CUT_BUFFER1: | |
170 | return QCUT_BUFFER1; | |
171 | case XA_CUT_BUFFER2: | |
172 | return QCUT_BUFFER2; | |
173 | case XA_CUT_BUFFER3: | |
174 | return QCUT_BUFFER3; | |
175 | case XA_CUT_BUFFER4: | |
176 | return QCUT_BUFFER4; | |
177 | case XA_CUT_BUFFER5: | |
178 | return QCUT_BUFFER5; | |
179 | case XA_CUT_BUFFER6: | |
180 | return QCUT_BUFFER6; | |
181 | case XA_CUT_BUFFER7: | |
182 | return QCUT_BUFFER7; | |
ede4db72 | 183 | #endif |
7da64e5c RS |
184 | } |
185 | ||
5c3a351a | 186 | if (atom == dpyinfo->Xatom_CLIPBOARD) |
7da64e5c | 187 | return QCLIPBOARD; |
5c3a351a | 188 | if (atom == dpyinfo->Xatom_TIMESTAMP) |
7da64e5c | 189 | return QTIMESTAMP; |
5c3a351a | 190 | if (atom == dpyinfo->Xatom_TEXT) |
7da64e5c | 191 | return QTEXT; |
5c3a351a | 192 | if (atom == dpyinfo->Xatom_DELETE) |
7da64e5c | 193 | return QDELETE; |
5c3a351a | 194 | if (atom == dpyinfo->Xatom_MULTIPLE) |
7da64e5c | 195 | return QMULTIPLE; |
5c3a351a | 196 | if (atom == dpyinfo->Xatom_INCR) |
7da64e5c | 197 | return QINCR; |
5c3a351a | 198 | if (atom == dpyinfo->Xatom_EMACS_TMP) |
7da64e5c | 199 | return QEMACS_TMP; |
5c3a351a | 200 | if (atom == dpyinfo->Xatom_TARGETS) |
7da64e5c | 201 | return QTARGETS; |
5c3a351a | 202 | if (atom == dpyinfo->Xatom_NULL) |
7da64e5c | 203 | return QNULL; |
ede4db72 RS |
204 | |
205 | BLOCK_INPUT; | |
206 | str = XGetAtomName (display, atom); | |
207 | UNBLOCK_INPUT; | |
208 | #if 0 | |
209 | fprintf (stderr, " XGetAtomName --> %s\n", str); | |
210 | #endif | |
211 | if (! str) return Qnil; | |
212 | val = intern (str); | |
213 | BLOCK_INPUT; | |
214 | XFree (str); | |
215 | UNBLOCK_INPUT; | |
216 | return val; | |
217 | } | |
8a89415e | 218 | \f |
ede4db72 RS |
219 | /* Do protocol to assert ourself as a selection owner. |
220 | Update the Vselection_alist so that we can reply to later requests for | |
221 | our selection. */ | |
222 | ||
223 | static void | |
224 | x_own_selection (selection_name, selection_value) | |
225 | Lisp_Object selection_name, selection_value; | |
226 | { | |
ede4db72 | 227 | Window selecting_window = FRAME_X_WINDOW (selected_frame); |
3834c318 | 228 | Display *display = FRAME_X_DISPLAY (selected_frame); |
7da64e5c | 229 | Time time = last_event_timestamp; |
ede4db72 | 230 | Atom selection_atom; |
5c3a351a | 231 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
ede4db72 RS |
232 | |
233 | CHECK_SYMBOL (selection_name, 0); | |
5c3a351a | 234 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection_name); |
ede4db72 RS |
235 | |
236 | BLOCK_INPUT; | |
a7b24d46 | 237 | x_catch_errors (display); |
ede4db72 | 238 | XSetSelectionOwner (display, selection_atom, selecting_window, time); |
a7b24d46 RS |
239 | x_check_errors (display, "Can't set selection: %s"); |
240 | x_uncatch_errors (display); | |
ede4db72 RS |
241 | UNBLOCK_INPUT; |
242 | ||
243 | /* Now update the local cache */ | |
244 | { | |
245 | Lisp_Object selection_time; | |
246 | Lisp_Object selection_data; | |
247 | Lisp_Object prev_value; | |
248 | ||
249 | selection_time = long_to_cons ((unsigned long) time); | |
250 | selection_data = Fcons (selection_name, | |
251 | Fcons (selection_value, | |
118bd841 RS |
252 | Fcons (selection_time, |
253 | Fcons (Fselected_frame (), Qnil)))); | |
ede4db72 RS |
254 | prev_value = assq_no_quit (selection_name, Vselection_alist); |
255 | ||
256 | Vselection_alist = Fcons (selection_data, Vselection_alist); | |
257 | ||
258 | /* If we already owned the selection, remove the old selection data. | |
259 | Perhaps we should destructively modify it instead. | |
260 | Don't use Fdelq as that may QUIT. */ | |
261 | if (!NILP (prev_value)) | |
262 | { | |
263 | Lisp_Object rest; /* we know it's not the CAR, so it's easy. */ | |
264 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
265 | if (EQ (prev_value, Fcar (XCONS (rest)->cdr))) | |
266 | { | |
267 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
268 | break; | |
269 | } | |
270 | } | |
271 | } | |
272 | } | |
273 | \f | |
274 | /* Given a selection-name and desired type, look up our local copy of | |
275 | the selection value and convert it to the type. | |
276 | The value is nil or a string. | |
277 | This function is used both for remote requests | |
7da64e5c | 278 | and for local x-get-selection-internal. |
ede4db72 RS |
279 | |
280 | This calls random Lisp code, and may signal or gc. */ | |
281 | ||
282 | static Lisp_Object | |
283 | x_get_local_selection (selection_symbol, target_type) | |
284 | Lisp_Object selection_symbol, target_type; | |
285 | { | |
286 | Lisp_Object local_value; | |
287 | Lisp_Object handler_fn, value, type, check; | |
288 | int count; | |
289 | ||
290 | local_value = assq_no_quit (selection_symbol, Vselection_alist); | |
291 | ||
292 | if (NILP (local_value)) return Qnil; | |
293 | ||
294 | /* TIMESTAMP and MULTIPLE are special cases 'cause that's easiest. */ | |
295 | if (EQ (target_type, QTIMESTAMP)) | |
296 | { | |
297 | handler_fn = Qnil; | |
298 | value = XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car; | |
299 | } | |
300 | #if 0 | |
301 | else if (EQ (target_type, QDELETE)) | |
302 | { | |
303 | handler_fn = Qnil; | |
304 | Fx_disown_selection_internal | |
305 | (selection_symbol, | |
306 | XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car); | |
307 | value = QNULL; | |
308 | } | |
309 | #endif | |
310 | ||
311 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
312 | else if (CONSP (target_type) | |
313 | && XCONS (target_type)->car == QMULTIPLE) | |
314 | { | |
9d2d1dd8 KH |
315 | Lisp_Object pairs; |
316 | int size; | |
ede4db72 | 317 | int i; |
9d2d1dd8 KH |
318 | pairs = XCONS (target_type)->cdr; |
319 | size = XVECTOR (pairs)->size; | |
ede4db72 RS |
320 | /* If the target is MULTIPLE, then target_type looks like |
321 | (MULTIPLE . [[SELECTION1 TARGET1] [SELECTION2 TARGET2] ... ]) | |
322 | We modify the second element of each pair in the vector and | |
323 | return it as [[SELECTION1 <value1>] [SELECTION2 <value2>] ... ] | |
324 | */ | |
325 | for (i = 0; i < size; i++) | |
326 | { | |
9d2d1dd8 KH |
327 | Lisp_Object pair; |
328 | pair = XVECTOR (pairs)->contents [i]; | |
ede4db72 RS |
329 | XVECTOR (pair)->contents [1] |
330 | = x_get_local_selection (XVECTOR (pair)->contents [0], | |
331 | XVECTOR (pair)->contents [1]); | |
332 | } | |
333 | return pairs; | |
334 | } | |
335 | #endif | |
336 | else | |
337 | { | |
338 | /* Don't allow a quit within the converter. | |
339 | When the user types C-g, he would be surprised | |
340 | if by luck it came during a converter. */ | |
341 | count = specpdl_ptr - specpdl; | |
342 | specbind (Qinhibit_quit, Qt); | |
343 | ||
344 | CHECK_SYMBOL (target_type, 0); | |
345 | handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist)); | |
1eb4d468 RS |
346 | if (!NILP (handler_fn)) |
347 | value = call3 (handler_fn, | |
348 | selection_symbol, target_type, | |
349 | XCONS (XCONS (local_value)->cdr)->car); | |
350 | else | |
351 | value = Qnil; | |
ede4db72 RS |
352 | unbind_to (count, Qnil); |
353 | } | |
354 | ||
355 | /* Make sure this value is of a type that we could transmit | |
356 | to another X client. */ | |
a87ed99c | 357 | |
ede4db72 RS |
358 | check = value; |
359 | if (CONSP (value) | |
360 | && SYMBOLP (XCONS (value)->car)) | |
361 | type = XCONS (value)->car, | |
362 | check = XCONS (value)->cdr; | |
363 | ||
364 | if (STRINGP (check) | |
365 | || VECTORP (check) | |
366 | || SYMBOLP (check) | |
7da64e5c | 367 | || INTEGERP (check) |
ede4db72 RS |
368 | || NILP (value)) |
369 | return value; | |
a87ed99c | 370 | /* Check for a value that cons_to_long could handle. */ |
ede4db72 | 371 | else if (CONSP (check) |
7da64e5c RS |
372 | && INTEGERP (XCONS (check)->car) |
373 | && (INTEGERP (XCONS (check)->cdr) | |
ede4db72 RS |
374 | || |
375 | (CONSP (XCONS (check)->cdr) | |
7da64e5c | 376 | && INTEGERP (XCONS (XCONS (check)->cdr)->car) |
ede4db72 RS |
377 | && NILP (XCONS (XCONS (check)->cdr)->cdr)))) |
378 | return value; | |
379 | else | |
380 | return | |
381 | Fsignal (Qerror, | |
a87ed99c | 382 | Fcons (build_string ("invalid data returned by selection-conversion function"), |
ede4db72 RS |
383 | Fcons (handler_fn, Fcons (value, Qnil)))); |
384 | } | |
385 | \f | |
386 | /* Subroutines of x_reply_selection_request. */ | |
387 | ||
5d0ba25b | 388 | /* Send a SelectionNotify event to the requestor with property=None, |
ede4db72 RS |
389 | meaning we were unable to do what they wanted. */ |
390 | ||
391 | static void | |
392 | x_decline_selection_request (event) | |
393 | struct input_event *event; | |
394 | { | |
395 | XSelectionEvent reply; | |
396 | reply.type = SelectionNotify; | |
397 | reply.display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 398 | reply.requestor = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
399 | reply.selection = SELECTION_EVENT_SELECTION (event); |
400 | reply.time = SELECTION_EVENT_TIME (event); | |
401 | reply.target = SELECTION_EVENT_TARGET (event); | |
402 | reply.property = None; | |
403 | ||
404 | BLOCK_INPUT; | |
5d0ba25b | 405 | XSendEvent (reply.display, reply.requestor, False, 0L, |
7ffb2841 | 406 | (XEvent *) &reply); |
5c3a351a | 407 | XFlush (reply.display); |
ede4db72 RS |
408 | UNBLOCK_INPUT; |
409 | } | |
410 | ||
411 | /* This is the selection request currently being processed. | |
412 | It is set to zero when the request is fully processed. */ | |
413 | static struct input_event *x_selection_current_request; | |
414 | ||
415 | /* Used as an unwind-protect clause so that, if a selection-converter signals | |
2a1a4c9d | 416 | an error, we tell the requester that we were unable to do what they wanted |
ede4db72 RS |
417 | before we throw to top-level or go into the debugger or whatever. */ |
418 | ||
419 | static Lisp_Object | |
420 | x_selection_request_lisp_error (ignore) | |
421 | Lisp_Object ignore; | |
422 | { | |
423 | if (x_selection_current_request != 0) | |
424 | x_decline_selection_request (x_selection_current_request); | |
425 | return Qnil; | |
426 | } | |
427 | \f | |
d1f21a66 RS |
428 | |
429 | /* This stuff is so that INCR selections are reentrant (that is, so we can | |
430 | be servicing multiple INCR selection requests simultaneously.) I haven't | |
431 | actually tested that yet. */ | |
432 | ||
433 | /* Keep a list of the property changes that are awaited. */ | |
434 | ||
435 | struct prop_location | |
436 | { | |
437 | int identifier; | |
438 | Display *display; | |
439 | Window window; | |
440 | Atom property; | |
441 | int desired_state; | |
442 | int arrived; | |
443 | struct prop_location *next; | |
444 | }; | |
445 | ||
446 | static struct prop_location *expect_property_change (); | |
447 | static void wait_for_property_change (); | |
448 | static void unexpect_property_change (); | |
449 | static int waiting_for_other_props_on_window (); | |
450 | ||
451 | static int prop_location_identifier; | |
452 | ||
453 | static Lisp_Object property_change_reply; | |
454 | ||
455 | static struct prop_location *property_change_reply_object; | |
456 | ||
457 | static struct prop_location *property_change_wait_list; | |
55b2d45d RS |
458 | |
459 | static Lisp_Object | |
460 | queue_selection_requests_unwind (frame) | |
461 | Lisp_Object frame; | |
462 | { | |
463 | FRAME_PTR f = XFRAME (frame); | |
464 | ||
465 | if (! NILP (frame)) | |
466 | x_stop_queuing_selection_requests (FRAME_X_DISPLAY (f)); | |
ab552306 | 467 | return Qnil; |
55b2d45d RS |
468 | } |
469 | ||
470 | /* Return some frame whose display info is DPYINFO. | |
471 | Return nil if there is none. */ | |
472 | ||
473 | static Lisp_Object | |
474 | some_frame_on_display (dpyinfo) | |
475 | struct x_display_info *dpyinfo; | |
476 | { | |
477 | Lisp_Object list, frame; | |
478 | ||
479 | FOR_EACH_FRAME (list, frame) | |
480 | { | |
481 | if (FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
482 | return frame; | |
483 | } | |
484 | ||
485 | return Qnil; | |
486 | } | |
d1f21a66 | 487 | \f |
ede4db72 RS |
488 | /* Send the reply to a selection request event EVENT. |
489 | TYPE is the type of selection data requested. | |
490 | DATA and SIZE describe the data to send, already converted. | |
491 | FORMAT is the unit-size (in bits) of the data to be transmitted. */ | |
492 | ||
493 | static void | |
494 | x_reply_selection_request (event, format, data, size, type) | |
495 | struct input_event *event; | |
496 | int format, size; | |
497 | unsigned char *data; | |
498 | Atom type; | |
499 | { | |
500 | XSelectionEvent reply; | |
501 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 502 | Window window = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
503 | int bytes_remaining; |
504 | int format_bytes = format/8; | |
505 | int max_bytes = SELECTION_QUANTUM (display); | |
5c3a351a | 506 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 RS |
507 | |
508 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
509 | max_bytes = MAX_SELECTION_QUANTUM; | |
510 | ||
511 | reply.type = SelectionNotify; | |
512 | reply.display = display; | |
5d0ba25b | 513 | reply.requestor = window; |
ede4db72 RS |
514 | reply.selection = SELECTION_EVENT_SELECTION (event); |
515 | reply.time = SELECTION_EVENT_TIME (event); | |
516 | reply.target = SELECTION_EVENT_TARGET (event); | |
517 | reply.property = SELECTION_EVENT_PROPERTY (event); | |
518 | if (reply.property == None) | |
519 | reply.property = reply.target; | |
520 | ||
521 | /* #### XChangeProperty can generate BadAlloc, and we must handle it! */ | |
afe1529d RS |
522 | BLOCK_INPUT; |
523 | x_catch_errors (display); | |
ede4db72 | 524 | |
ede4db72 RS |
525 | /* Store the data on the requested property. |
526 | If the selection is large, only store the first N bytes of it. | |
527 | */ | |
528 | bytes_remaining = size * format_bytes; | |
529 | if (bytes_remaining <= max_bytes) | |
530 | { | |
531 | /* Send all the data at once, with minimal handshaking. */ | |
532 | #if 0 | |
533 | fprintf (stderr,"\nStoring all %d\n", bytes_remaining); | |
534 | #endif | |
535 | XChangeProperty (display, window, reply.property, type, format, | |
536 | PropModeReplace, data, size); | |
537 | /* At this point, the selection was successfully stored; ack it. */ | |
2f65feb6 | 538 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
ede4db72 RS |
539 | } |
540 | else | |
541 | { | |
542 | /* Send an INCR selection. */ | |
d1f21a66 | 543 | struct prop_location *wait_object; |
afe1529d | 544 | int had_errors; |
55b2d45d RS |
545 | int count = specpdl_ptr - specpdl; |
546 | Lisp_Object frame; | |
ede4db72 | 547 | |
55b2d45d RS |
548 | frame = some_frame_on_display (dpyinfo); |
549 | ||
550 | /* If the display no longer has frames, we can't expect | |
551 | to get many more selection requests from it, so don't | |
552 | bother trying to queue them. */ | |
553 | if (!NILP (frame)) | |
554 | { | |
555 | x_start_queuing_selection_requests (display); | |
556 | ||
557 | record_unwind_protect (queue_selection_requests_unwind, | |
558 | frame); | |
559 | } | |
2f65feb6 | 560 | |
19126e11 | 561 | if (x_window_to_frame (dpyinfo, window)) /* #### debug */ |
606140dd | 562 | error ("Attempt to transfer an INCR to ourself!"); |
ede4db72 RS |
563 | #if 0 |
564 | fprintf (stderr, "\nINCR %d\n", bytes_remaining); | |
565 | #endif | |
d1f21a66 RS |
566 | wait_object = expect_property_change (display, window, reply.property, |
567 | PropertyDelete); | |
ede4db72 | 568 | |
5c3a351a | 569 | XChangeProperty (display, window, reply.property, dpyinfo->Xatom_INCR, |
55b2d45d RS |
570 | 32, PropModeReplace, |
571 | (unsigned char *) &bytes_remaining, 1); | |
ede4db72 RS |
572 | XSelectInput (display, window, PropertyChangeMask); |
573 | /* Tell 'em the INCR data is there... */ | |
55b2d45d | 574 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
5c3a351a | 575 | XFlush (display); |
afe1529d RS |
576 | |
577 | had_errors = x_had_errors_p (display); | |
2f65feb6 | 578 | UNBLOCK_INPUT; |
ede4db72 | 579 | |
2a1a4c9d | 580 | /* First, wait for the requester to ack by deleting the property. |
ede4db72 | 581 | This can run random lisp code (process handlers) or signal. */ |
afe1529d RS |
582 | if (! had_errors) |
583 | wait_for_property_change (wait_object); | |
ede4db72 RS |
584 | |
585 | while (bytes_remaining) | |
586 | { | |
587 | int i = ((bytes_remaining < max_bytes) | |
588 | ? bytes_remaining | |
589 | : max_bytes); | |
2f65feb6 RS |
590 | |
591 | BLOCK_INPUT; | |
592 | ||
d1f21a66 RS |
593 | wait_object |
594 | = expect_property_change (display, window, reply.property, | |
595 | PropertyDelete); | |
ede4db72 RS |
596 | #if 0 |
597 | fprintf (stderr," INCR adding %d\n", i); | |
598 | #endif | |
599 | /* Append the next chunk of data to the property. */ | |
600 | XChangeProperty (display, window, reply.property, type, format, | |
601 | PropModeAppend, data, i / format_bytes); | |
602 | bytes_remaining -= i; | |
603 | data += i; | |
5c3a351a | 604 | XFlush (display); |
afe1529d | 605 | had_errors = x_had_errors_p (display); |
2f65feb6 | 606 | UNBLOCK_INPUT; |
ede4db72 | 607 | |
afe1529d RS |
608 | if (had_errors) |
609 | break; | |
610 | ||
2a1a4c9d | 611 | /* Now wait for the requester to ack this chunk by deleting the |
ede4db72 RS |
612 | property. This can run random lisp code or signal. |
613 | */ | |
d1f21a66 | 614 | wait_for_property_change (wait_object); |
ede4db72 | 615 | } |
2a1a4c9d | 616 | /* Now write a zero-length chunk to the property to tell the requester |
ede4db72 RS |
617 | that we're done. */ |
618 | #if 0 | |
619 | fprintf (stderr," INCR done\n"); | |
620 | #endif | |
2f65feb6 | 621 | BLOCK_INPUT; |
ede4db72 RS |
622 | if (! waiting_for_other_props_on_window (display, window)) |
623 | XSelectInput (display, window, 0L); | |
624 | ||
625 | XChangeProperty (display, window, reply.property, type, format, | |
626 | PropModeReplace, data, 0); | |
55b2d45d RS |
627 | |
628 | unbind_to (count, Qnil); | |
ede4db72 | 629 | } |
afe1529d RS |
630 | |
631 | XFlush (display); | |
632 | x_uncatch_errors (display); | |
633 | UNBLOCK_INPUT; | |
ede4db72 RS |
634 | } |
635 | \f | |
636 | /* Handle a SelectionRequest event EVENT. | |
637 | This is called from keyboard.c when such an event is found in the queue. */ | |
638 | ||
639 | void | |
640 | x_handle_selection_request (event) | |
641 | struct input_event *event; | |
642 | { | |
643 | struct gcpro gcpro1, gcpro2, gcpro3; | |
9d2d1dd8 | 644 | Lisp_Object local_selection_data; |
ede4db72 | 645 | Lisp_Object selection_symbol; |
9d2d1dd8 KH |
646 | Lisp_Object target_symbol; |
647 | Lisp_Object converted_selection; | |
ede4db72 | 648 | Time local_selection_time; |
9d2d1dd8 | 649 | Lisp_Object successful_p; |
ede4db72 | 650 | int count; |
5c3a351a RS |
651 | struct x_display_info *dpyinfo |
652 | = x_display_info_for_display (SELECTION_EVENT_DISPLAY (event)); | |
ede4db72 | 653 | |
9d2d1dd8 KH |
654 | local_selection_data = Qnil; |
655 | target_symbol = Qnil; | |
656 | converted_selection = Qnil; | |
657 | successful_p = Qnil; | |
658 | ||
ede4db72 RS |
659 | GCPRO3 (local_selection_data, converted_selection, target_symbol); |
660 | ||
5c3a351a RS |
661 | selection_symbol = x_atom_to_symbol (dpyinfo, |
662 | SELECTION_EVENT_DISPLAY (event), | |
ede4db72 RS |
663 | SELECTION_EVENT_SELECTION (event)); |
664 | ||
665 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
ede4db72 RS |
666 | |
667 | if (NILP (local_selection_data)) | |
668 | { | |
669 | /* Someone asked for the selection, but we don't have it any more. | |
670 | */ | |
671 | x_decline_selection_request (event); | |
672 | goto DONE; | |
673 | } | |
674 | ||
675 | local_selection_time = (Time) | |
676 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
677 | ||
678 | if (SELECTION_EVENT_TIME (event) != CurrentTime | |
7da64e5c | 679 | && local_selection_time > SELECTION_EVENT_TIME (event)) |
ede4db72 RS |
680 | { |
681 | /* Someone asked for the selection, and we have one, but not the one | |
682 | they're looking for. | |
683 | */ | |
684 | x_decline_selection_request (event); | |
685 | goto DONE; | |
686 | } | |
687 | ||
688 | count = specpdl_ptr - specpdl; | |
689 | x_selection_current_request = event; | |
690 | record_unwind_protect (x_selection_request_lisp_error, Qnil); | |
691 | ||
5c3a351a | 692 | target_symbol = x_atom_to_symbol (dpyinfo, SELECTION_EVENT_DISPLAY (event), |
ede4db72 RS |
693 | SELECTION_EVENT_TARGET (event)); |
694 | ||
695 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
696 | if (EQ (target_symbol, QMULTIPLE)) | |
697 | target_symbol = fetch_multiple_target (event); | |
698 | #endif | |
699 | ||
700 | /* Convert lisp objects back into binary data */ | |
701 | ||
702 | converted_selection | |
703 | = x_get_local_selection (selection_symbol, target_symbol); | |
704 | ||
705 | if (! NILP (converted_selection)) | |
706 | { | |
707 | unsigned char *data; | |
708 | unsigned int size; | |
709 | int format; | |
710 | Atom type; | |
aca39f42 RS |
711 | int nofree; |
712 | ||
2f65feb6 RS |
713 | lisp_data_to_selection_data (SELECTION_EVENT_DISPLAY (event), |
714 | converted_selection, | |
aca39f42 | 715 | &data, &type, &size, &format, &nofree); |
ede4db72 RS |
716 | |
717 | x_reply_selection_request (event, format, data, size, type); | |
718 | successful_p = Qt; | |
719 | ||
720 | /* Indicate we have successfully processed this event. */ | |
7da64e5c | 721 | x_selection_current_request = 0; |
ede4db72 | 722 | |
aca39f42 RS |
723 | if (!nofree) |
724 | xfree (data); | |
ede4db72 RS |
725 | } |
726 | unbind_to (count, Qnil); | |
727 | ||
728 | DONE: | |
729 | ||
730 | UNGCPRO; | |
731 | ||
732 | /* Let random lisp code notice that the selection has been asked for. */ | |
733 | { | |
9d2d1dd8 KH |
734 | Lisp_Object rest; |
735 | rest = Vx_sent_selection_hooks; | |
ede4db72 RS |
736 | if (!EQ (rest, Qunbound)) |
737 | for (; CONSP (rest); rest = Fcdr (rest)) | |
738 | call3 (Fcar (rest), selection_symbol, target_symbol, successful_p); | |
739 | } | |
740 | } | |
741 | \f | |
742 | /* Handle a SelectionClear event EVENT, which indicates that some other | |
743 | client cleared out our previously asserted selection. | |
744 | This is called from keyboard.c when such an event is found in the queue. */ | |
745 | ||
746 | void | |
747 | x_handle_selection_clear (event) | |
748 | struct input_event *event; | |
749 | { | |
750 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
751 | Atom selection = SELECTION_EVENT_SELECTION (event); | |
752 | Time changed_owner_time = SELECTION_EVENT_TIME (event); | |
753 | ||
754 | Lisp_Object selection_symbol, local_selection_data; | |
755 | Time local_selection_time; | |
5c3a351a | 756 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 757 | |
5c3a351a | 758 | selection_symbol = x_atom_to_symbol (dpyinfo, display, selection); |
ede4db72 RS |
759 | |
760 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
761 | ||
762 | /* Well, we already believe that we don't own it, so that's just fine. */ | |
763 | if (NILP (local_selection_data)) return; | |
764 | ||
765 | local_selection_time = (Time) | |
766 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
767 | ||
768 | /* This SelectionClear is for a selection that we no longer own, so we can | |
769 | disregard it. (That is, we have reasserted the selection since this | |
770 | request was generated.) */ | |
771 | ||
772 | if (changed_owner_time != CurrentTime | |
773 | && local_selection_time > changed_owner_time) | |
774 | return; | |
775 | ||
776 | /* Otherwise, we're really honest and truly being told to drop it. | |
777 | Don't use Fdelq as that may QUIT;. */ | |
778 | ||
779 | if (EQ (local_selection_data, Fcar (Vselection_alist))) | |
780 | Vselection_alist = Fcdr (Vselection_alist); | |
781 | else | |
782 | { | |
783 | Lisp_Object rest; | |
784 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
785 | if (EQ (local_selection_data, Fcar (XCONS (rest)->cdr))) | |
786 | { | |
787 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
788 | break; | |
789 | } | |
790 | } | |
791 | ||
792 | /* Let random lisp code notice that the selection has been stolen. */ | |
793 | ||
794 | { | |
d1f21a66 RS |
795 | Lisp_Object rest; |
796 | rest = Vx_lost_selection_hooks; | |
ede4db72 | 797 | if (!EQ (rest, Qunbound)) |
d1f21a66 RS |
798 | { |
799 | for (; CONSP (rest); rest = Fcdr (rest)) | |
800 | call1 (Fcar (rest), selection_symbol); | |
7c6b2ea4 | 801 | prepare_menu_bars (); |
d1f21a66 RS |
802 | redisplay_preserve_echo_area (); |
803 | } | |
ede4db72 RS |
804 | } |
805 | } | |
806 | ||
118bd841 RS |
807 | /* Clear all selections that were made from frame F. |
808 | We do this when about to delete a frame. */ | |
809 | ||
810 | void | |
811 | x_clear_frame_selections (f) | |
812 | FRAME_PTR f; | |
813 | { | |
814 | Lisp_Object frame; | |
815 | Lisp_Object rest; | |
816 | ||
90851bbe | 817 | XSETFRAME (frame, f); |
118bd841 RS |
818 | |
819 | /* Otherwise, we're really honest and truly being told to drop it. | |
820 | Don't use Fdelq as that may QUIT;. */ | |
821 | ||
0d199f9c RS |
822 | /* Delete elements from the beginning of Vselection_alist. */ |
823 | while (!NILP (Vselection_alist) | |
824 | && EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (Vselection_alist))))))) | |
825 | { | |
826 | /* Let random Lisp code notice that the selection has been stolen. */ | |
827 | Lisp_Object hooks, selection_symbol; | |
828 | ||
829 | hooks = Vx_lost_selection_hooks; | |
830 | selection_symbol = Fcar (Fcar (Vselection_alist)); | |
831 | ||
832 | if (!EQ (hooks, Qunbound)) | |
833 | { | |
834 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
835 | call1 (Fcar (hooks), selection_symbol); | |
836 | redisplay_preserve_echo_area (); | |
837 | } | |
838 | ||
839 | Vselection_alist = Fcdr (Vselection_alist); | |
840 | } | |
841 | ||
842 | /* Delete elements after the beginning of Vselection_alist. */ | |
118bd841 RS |
843 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) |
844 | if (EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (XCONS (rest)->cdr))))))) | |
845 | { | |
846 | /* Let random Lisp code notice that the selection has been stolen. */ | |
847 | Lisp_Object hooks, selection_symbol; | |
848 | ||
849 | hooks = Vx_lost_selection_hooks; | |
0d199f9c | 850 | selection_symbol = Fcar (Fcar (XCONS (rest)->cdr)); |
118bd841 RS |
851 | |
852 | if (!EQ (hooks, Qunbound)) | |
853 | { | |
854 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
855 | call1 (Fcar (hooks), selection_symbol); | |
856 | redisplay_preserve_echo_area (); | |
857 | } | |
858 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
859 | break; | |
860 | } | |
861 | } | |
ede4db72 | 862 | \f |
ede4db72 RS |
863 | /* Nonzero if any properties for DISPLAY and WINDOW |
864 | are on the list of what we are waiting for. */ | |
865 | ||
866 | static int | |
867 | waiting_for_other_props_on_window (display, window) | |
868 | Display *display; | |
869 | Window window; | |
870 | { | |
871 | struct prop_location *rest = property_change_wait_list; | |
872 | while (rest) | |
873 | if (rest->display == display && rest->window == window) | |
874 | return 1; | |
875 | else | |
876 | rest = rest->next; | |
877 | return 0; | |
878 | } | |
879 | ||
880 | /* Add an entry to the list of property changes we are waiting for. | |
881 | DISPLAY, WINDOW, PROPERTY, STATE describe what we will wait for. | |
882 | The return value is a number that uniquely identifies | |
883 | this awaited property change. */ | |
884 | ||
d1f21a66 | 885 | static struct prop_location * |
ede4db72 RS |
886 | expect_property_change (display, window, property, state) |
887 | Display *display; | |
888 | Window window; | |
889 | Lisp_Object property; | |
890 | int state; | |
891 | { | |
892 | struct prop_location *pl | |
893 | = (struct prop_location *) xmalloc (sizeof (struct prop_location)); | |
2f65feb6 | 894 | pl->identifier = ++prop_location_identifier; |
ede4db72 RS |
895 | pl->display = display; |
896 | pl->window = window; | |
897 | pl->property = property; | |
898 | pl->desired_state = state; | |
899 | pl->next = property_change_wait_list; | |
d1f21a66 | 900 | pl->arrived = 0; |
ede4db72 | 901 | property_change_wait_list = pl; |
d1f21a66 | 902 | return pl; |
ede4db72 RS |
903 | } |
904 | ||
905 | /* Delete an entry from the list of property changes we are waiting for. | |
2f65feb6 | 906 | IDENTIFIER is the number that uniquely identifies the entry. */ |
ede4db72 RS |
907 | |
908 | static void | |
d1f21a66 RS |
909 | unexpect_property_change (location) |
910 | struct prop_location *location; | |
ede4db72 RS |
911 | { |
912 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
913 | while (rest) | |
914 | { | |
d1f21a66 | 915 | if (rest == location) |
ede4db72 RS |
916 | { |
917 | if (prev) | |
918 | prev->next = rest->next; | |
919 | else | |
920 | property_change_wait_list = rest->next; | |
921 | xfree (rest); | |
922 | return; | |
923 | } | |
924 | prev = rest; | |
925 | rest = rest->next; | |
926 | } | |
927 | } | |
928 | ||
2f65feb6 RS |
929 | /* Remove the property change expectation element for IDENTIFIER. */ |
930 | ||
931 | static Lisp_Object | |
932 | wait_for_property_change_unwind (identifierval) | |
933 | Lisp_Object identifierval; | |
934 | { | |
c4898489 KH |
935 | unexpect_property_change ((struct prop_location *) |
936 | (XFASTINT (XCONS (identifierval)->car) << 16 | |
937 | | XFASTINT (XCONS (identifierval)->cdr))); | |
ab552306 | 938 | return Qnil; |
2f65feb6 RS |
939 | } |
940 | ||
ede4db72 | 941 | /* Actually wait for a property change. |
2f65feb6 | 942 | IDENTIFIER should be the value that expect_property_change returned. */ |
ede4db72 RS |
943 | |
944 | static void | |
d1f21a66 RS |
945 | wait_for_property_change (location) |
946 | struct prop_location *location; | |
ede4db72 | 947 | { |
2f65feb6 RS |
948 | int secs, usecs; |
949 | int count = specpdl_ptr - specpdl; | |
d1f21a66 RS |
950 | Lisp_Object tem; |
951 | ||
c4898489 KH |
952 | tem = Fcons (Qnil, Qnil); |
953 | XSETFASTINT (XCONS (tem)->car, (EMACS_UINT)location >> 16); | |
954 | XSETFASTINT (XCONS (tem)->cdr, (EMACS_UINT)location & 0xffff); | |
2f65feb6 RS |
955 | |
956 | /* Make sure to do unexpect_property_change if we quit or err. */ | |
d1f21a66 | 957 | record_unwind_protect (wait_for_property_change_unwind, tem); |
2f65feb6 | 958 | |
ede4db72 | 959 | XCONS (property_change_reply)->car = Qnil; |
2f65feb6 | 960 | |
afe1529d RS |
961 | property_change_reply_object = location; |
962 | /* If the event we are waiting for arrives beyond here, it will set | |
963 | property_change_reply, because property_change_reply_object says so. */ | |
d1f21a66 RS |
964 | if (! location->arrived) |
965 | { | |
d1f21a66 RS |
966 | secs = x_selection_timeout / 1000; |
967 | usecs = (x_selection_timeout % 1000) * 1000; | |
968 | wait_reading_process_input (secs, usecs, property_change_reply, 0); | |
969 | ||
970 | if (NILP (XCONS (property_change_reply)->car)) | |
606140dd | 971 | error ("Timed out waiting for property-notify event"); |
d1f21a66 | 972 | } |
2f65feb6 RS |
973 | |
974 | unbind_to (count, Qnil); | |
ede4db72 RS |
975 | } |
976 | ||
977 | /* Called from XTread_socket in response to a PropertyNotify event. */ | |
978 | ||
979 | void | |
980 | x_handle_property_notify (event) | |
981 | XPropertyEvent *event; | |
982 | { | |
983 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
984 | while (rest) | |
985 | { | |
986 | if (rest->property == event->atom | |
987 | && rest->window == event->window | |
988 | && rest->display == event->display | |
989 | && rest->desired_state == event->state) | |
990 | { | |
991 | #if 0 | |
992 | fprintf (stderr, "Saw expected prop-%s on %s\n", | |
993 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a | 994 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, event->display, |
ede4db72 RS |
995 | event->atom)) |
996 | ->name->data); | |
997 | #endif | |
998 | ||
d1f21a66 RS |
999 | rest->arrived = 1; |
1000 | ||
ede4db72 RS |
1001 | /* If this is the one wait_for_property_change is waiting for, |
1002 | tell it to wake up. */ | |
d1f21a66 | 1003 | if (rest == property_change_reply_object) |
ede4db72 RS |
1004 | XCONS (property_change_reply)->car = Qt; |
1005 | ||
1006 | if (prev) | |
1007 | prev->next = rest->next; | |
1008 | else | |
1009 | property_change_wait_list = rest->next; | |
1010 | xfree (rest); | |
1011 | return; | |
1012 | } | |
1013 | prev = rest; | |
1014 | rest = rest->next; | |
1015 | } | |
1016 | #if 0 | |
1017 | fprintf (stderr, "Saw UNexpected prop-%s on %s\n", | |
1018 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a RS |
1019 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, |
1020 | event->display, event->atom)) | |
ede4db72 RS |
1021 | ->name->data); |
1022 | #endif | |
1023 | } | |
1024 | ||
1025 | ||
1026 | \f | |
1027 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1028 | ||
1029 | static Lisp_Object | |
1030 | fetch_multiple_target (event) | |
1031 | XSelectionRequestEvent *event; | |
1032 | { | |
1033 | Display *display = event->display; | |
5d0ba25b | 1034 | Window window = event->requestor; |
ede4db72 RS |
1035 | Atom target = event->target; |
1036 | Atom selection_atom = event->selection; | |
1037 | int result; | |
1038 | ||
1039 | return | |
1040 | Fcons (QMULTIPLE, | |
1041 | x_get_window_property_as_lisp_data (display, window, target, | |
1042 | QMULTIPLE, selection_atom)); | |
1043 | } | |
1044 | ||
1045 | static Lisp_Object | |
1046 | copy_multiple_data (obj) | |
1047 | Lisp_Object obj; | |
1048 | { | |
1049 | Lisp_Object vec; | |
1050 | int i; | |
1051 | int size; | |
1052 | if (CONSP (obj)) | |
1053 | return Fcons (XCONS (obj)->car, copy_multiple_data (XCONS (obj)->cdr)); | |
1054 | ||
1055 | CHECK_VECTOR (obj, 0); | |
1056 | vec = Fmake_vector (size = XVECTOR (obj)->size, Qnil); | |
1057 | for (i = 0; i < size; i++) | |
1058 | { | |
1059 | Lisp_Object vec2 = XVECTOR (obj)->contents [i]; | |
1060 | CHECK_VECTOR (vec2, 0); | |
1061 | if (XVECTOR (vec2)->size != 2) | |
1062 | /* ??? Confusing error message */ | |
1063 | Fsignal (Qerror, Fcons (build_string ("vectors must be of length 2"), | |
1064 | Fcons (vec2, Qnil))); | |
1065 | XVECTOR (vec)->contents [i] = Fmake_vector (2, Qnil); | |
1066 | XVECTOR (XVECTOR (vec)->contents [i])->contents [0] | |
1067 | = XVECTOR (vec2)->contents [0]; | |
1068 | XVECTOR (XVECTOR (vec)->contents [i])->contents [1] | |
1069 | = XVECTOR (vec2)->contents [1]; | |
1070 | } | |
1071 | return vec; | |
1072 | } | |
1073 | ||
1074 | #endif | |
1075 | ||
1076 | \f | |
1077 | /* Variables for communication with x_handle_selection_notify. */ | |
1078 | static Atom reading_which_selection; | |
1079 | static Lisp_Object reading_selection_reply; | |
1080 | static Window reading_selection_window; | |
1081 | ||
1082 | /* Do protocol to read selection-data from the server. | |
1083 | Converts this to Lisp data and returns it. */ | |
1084 | ||
1085 | static Lisp_Object | |
1086 | x_get_foreign_selection (selection_symbol, target_type) | |
1087 | Lisp_Object selection_symbol, target_type; | |
1088 | { | |
5d0ba25b | 1089 | Window requestor_window = FRAME_X_WINDOW (selected_frame); |
3834c318 | 1090 | Display *display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1091 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
5d0ba25b | 1092 | Time requestor_time = last_event_timestamp; |
5c3a351a RS |
1093 | Atom target_property = dpyinfo->Xatom_EMACS_TMP; |
1094 | Atom selection_atom = symbol_to_x_atom (dpyinfo, display, selection_symbol); | |
ede4db72 | 1095 | Atom type_atom; |
80da0190 | 1096 | int secs, usecs; |
55b2d45d RS |
1097 | int count = specpdl_ptr - specpdl; |
1098 | Lisp_Object frame; | |
ede4db72 RS |
1099 | |
1100 | if (CONSP (target_type)) | |
5c3a351a | 1101 | type_atom = symbol_to_x_atom (dpyinfo, display, XCONS (target_type)->car); |
ede4db72 | 1102 | else |
5c3a351a | 1103 | type_atom = symbol_to_x_atom (dpyinfo, display, target_type); |
ede4db72 RS |
1104 | |
1105 | BLOCK_INPUT; | |
a7b24d46 | 1106 | x_catch_errors (display); |
ede4db72 | 1107 | XConvertSelection (display, selection_atom, type_atom, target_property, |
5d0ba25b | 1108 | requestor_window, requestor_time); |
5c3a351a | 1109 | XFlush (display); |
ede4db72 RS |
1110 | |
1111 | /* Prepare to block until the reply has been read. */ | |
5d0ba25b | 1112 | reading_selection_window = requestor_window; |
ede4db72 RS |
1113 | reading_which_selection = selection_atom; |
1114 | XCONS (reading_selection_reply)->car = Qnil; | |
55b2d45d RS |
1115 | |
1116 | frame = some_frame_on_display (dpyinfo); | |
1117 | ||
1118 | /* If the display no longer has frames, we can't expect | |
1119 | to get many more selection requests from it, so don't | |
1120 | bother trying to queue them. */ | |
1121 | if (!NILP (frame)) | |
1122 | { | |
1123 | x_start_queuing_selection_requests (display); | |
1124 | ||
1125 | record_unwind_protect (queue_selection_requests_unwind, | |
1126 | frame); | |
1127 | } | |
ede4db72 RS |
1128 | UNBLOCK_INPUT; |
1129 | ||
80da0190 RS |
1130 | /* This allows quits. Also, don't wait forever. */ |
1131 | secs = x_selection_timeout / 1000; | |
1132 | usecs = (x_selection_timeout % 1000) * 1000; | |
1133 | wait_reading_process_input (secs, usecs, reading_selection_reply, 0); | |
ede4db72 | 1134 | |
7c6b2ea4 | 1135 | BLOCK_INPUT; |
a7b24d46 RS |
1136 | x_check_errors (display, "Cannot get selection: %s"); |
1137 | x_uncatch_errors (display); | |
55b2d45d | 1138 | unbind_to (count, Qnil); |
7c6b2ea4 RS |
1139 | UNBLOCK_INPUT; |
1140 | ||
ede4db72 | 1141 | if (NILP (XCONS (reading_selection_reply)->car)) |
606140dd KH |
1142 | error ("Timed out waiting for reply from selection owner"); |
1143 | if (EQ (XCONS (reading_selection_reply)->car, Qlambda)) | |
1144 | error ("No `%s' selection", XSYMBOL (selection_symbol)->name->data); | |
ede4db72 RS |
1145 | |
1146 | /* Otherwise, the selection is waiting for us on the requested property. */ | |
1147 | return | |
5d0ba25b | 1148 | x_get_window_property_as_lisp_data (display, requestor_window, |
ede4db72 RS |
1149 | target_property, target_type, |
1150 | selection_atom); | |
1151 | } | |
1152 | \f | |
1153 | /* Subroutines of x_get_window_property_as_lisp_data */ | |
1154 | ||
1155 | static void | |
1156 | x_get_window_property (display, window, property, data_ret, bytes_ret, | |
1157 | actual_type_ret, actual_format_ret, actual_size_ret, | |
1158 | delete_p) | |
1159 | Display *display; | |
1160 | Window window; | |
1161 | Atom property; | |
1162 | unsigned char **data_ret; | |
1163 | int *bytes_ret; | |
1164 | Atom *actual_type_ret; | |
1165 | int *actual_format_ret; | |
1166 | unsigned long *actual_size_ret; | |
1167 | int delete_p; | |
1168 | { | |
1169 | int total_size; | |
1170 | unsigned long bytes_remaining; | |
1171 | int offset = 0; | |
1172 | unsigned char *tmp_data = 0; | |
1173 | int result; | |
1174 | int buffer_size = SELECTION_QUANTUM (display); | |
1175 | if (buffer_size > MAX_SELECTION_QUANTUM) buffer_size = MAX_SELECTION_QUANTUM; | |
1176 | ||
1177 | BLOCK_INPUT; | |
1178 | /* First probe the thing to find out how big it is. */ | |
1179 | result = XGetWindowProperty (display, window, property, | |
137edb72 | 1180 | 0L, 0L, False, AnyPropertyType, |
ede4db72 RS |
1181 | actual_type_ret, actual_format_ret, |
1182 | actual_size_ret, | |
1183 | &bytes_remaining, &tmp_data); | |
ede4db72 RS |
1184 | if (result != Success) |
1185 | { | |
2f65feb6 | 1186 | UNBLOCK_INPUT; |
ede4db72 RS |
1187 | *data_ret = 0; |
1188 | *bytes_ret = 0; | |
1189 | return; | |
1190 | } | |
2f65feb6 | 1191 | xfree ((char *) tmp_data); |
ede4db72 RS |
1192 | |
1193 | if (*actual_type_ret == None || *actual_format_ret == 0) | |
1194 | { | |
2f65feb6 | 1195 | UNBLOCK_INPUT; |
ede4db72 RS |
1196 | return; |
1197 | } | |
1198 | ||
1199 | total_size = bytes_remaining + 1; | |
1200 | *data_ret = (unsigned char *) xmalloc (total_size); | |
1201 | ||
2a1a4c9d | 1202 | /* Now read, until we've gotten it all. */ |
ede4db72 RS |
1203 | while (bytes_remaining) |
1204 | { | |
1205 | #if 0 | |
1206 | int last = bytes_remaining; | |
1207 | #endif | |
1208 | result | |
1209 | = XGetWindowProperty (display, window, property, | |
137edb72 | 1210 | (long)offset/4, (long)buffer_size/4, |
2f65feb6 | 1211 | False, |
ede4db72 RS |
1212 | AnyPropertyType, |
1213 | actual_type_ret, actual_format_ret, | |
1214 | actual_size_ret, &bytes_remaining, &tmp_data); | |
1215 | #if 0 | |
1216 | fprintf (stderr, "<< read %d\n", last-bytes_remaining); | |
1217 | #endif | |
1218 | /* If this doesn't return Success at this point, it means that | |
1219 | some clod deleted the selection while we were in the midst of | |
1220 | reading it. Deal with that, I guess.... | |
1221 | */ | |
1222 | if (result != Success) break; | |
1223 | *actual_size_ret *= *actual_format_ret / 8; | |
1224 | bcopy (tmp_data, (*data_ret) + offset, *actual_size_ret); | |
1225 | offset += *actual_size_ret; | |
2f65feb6 | 1226 | xfree ((char *) tmp_data); |
ede4db72 | 1227 | } |
2f65feb6 | 1228 | |
5c3a351a | 1229 | XFlush (display); |
ede4db72 RS |
1230 | UNBLOCK_INPUT; |
1231 | *bytes_ret = offset; | |
1232 | } | |
1233 | \f | |
1234 | static void | |
1235 | receive_incremental_selection (display, window, property, target_type, | |
1236 | min_size_bytes, data_ret, size_bytes_ret, | |
1237 | type_ret, format_ret, size_ret) | |
1238 | Display *display; | |
1239 | Window window; | |
1240 | Atom property; | |
1241 | Lisp_Object target_type; /* for error messages only */ | |
1242 | unsigned int min_size_bytes; | |
1243 | unsigned char **data_ret; | |
1244 | int *size_bytes_ret; | |
1245 | Atom *type_ret; | |
1246 | unsigned long *size_ret; | |
1247 | int *format_ret; | |
1248 | { | |
1249 | int offset = 0; | |
d1f21a66 | 1250 | struct prop_location *wait_object; |
ede4db72 RS |
1251 | *size_bytes_ret = min_size_bytes; |
1252 | *data_ret = (unsigned char *) xmalloc (*size_bytes_ret); | |
1253 | #if 0 | |
1254 | fprintf (stderr, "\nread INCR %d\n", min_size_bytes); | |
1255 | #endif | |
2f65feb6 RS |
1256 | |
1257 | /* At this point, we have read an INCR property. | |
1258 | Delete the property to ack it. | |
1259 | (But first, prepare to receive the next event in this handshake.) | |
ede4db72 RS |
1260 | |
1261 | Now, we must loop, waiting for the sending window to put a value on | |
1262 | that property, then reading the property, then deleting it to ack. | |
1263 | We are done when the sender places a property of length 0. | |
1264 | */ | |
2f65feb6 RS |
1265 | BLOCK_INPUT; |
1266 | XSelectInput (display, window, STANDARD_EVENT_SET | PropertyChangeMask); | |
1267 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1268 | wait_object = expect_property_change (display, window, property, |
1269 | PropertyNewValue); | |
5c3a351a | 1270 | XFlush (display); |
2f65feb6 RS |
1271 | UNBLOCK_INPUT; |
1272 | ||
ede4db72 RS |
1273 | while (1) |
1274 | { | |
1275 | unsigned char *tmp_data; | |
1276 | int tmp_size_bytes; | |
d1f21a66 | 1277 | wait_for_property_change (wait_object); |
ede4db72 | 1278 | /* expect it again immediately, because x_get_window_property may |
2a1a4c9d | 1279 | .. no it won't, I don't get it. |
ede4db72 RS |
1280 | .. Ok, I get it now, the Xt code that implements INCR is broken. |
1281 | */ | |
ede4db72 RS |
1282 | x_get_window_property (display, window, property, |
1283 | &tmp_data, &tmp_size_bytes, | |
1284 | type_ret, format_ret, size_ret, 1); | |
1285 | ||
1286 | if (tmp_size_bytes == 0) /* we're done */ | |
1287 | { | |
1288 | #if 0 | |
1289 | fprintf (stderr, " read INCR done\n"); | |
1290 | #endif | |
2f65feb6 RS |
1291 | if (! waiting_for_other_props_on_window (display, window)) |
1292 | XSelectInput (display, window, STANDARD_EVENT_SET); | |
d1f21a66 | 1293 | unexpect_property_change (wait_object); |
ede4db72 RS |
1294 | if (tmp_data) xfree (tmp_data); |
1295 | break; | |
1296 | } | |
2f65feb6 RS |
1297 | |
1298 | BLOCK_INPUT; | |
1299 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1300 | wait_object = expect_property_change (display, window, property, |
1301 | PropertyNewValue); | |
5c3a351a | 1302 | XFlush (display); |
2f65feb6 RS |
1303 | UNBLOCK_INPUT; |
1304 | ||
ede4db72 RS |
1305 | #if 0 |
1306 | fprintf (stderr, " read INCR %d\n", tmp_size_bytes); | |
1307 | #endif | |
1308 | if (*size_bytes_ret < offset + tmp_size_bytes) | |
1309 | { | |
1310 | #if 0 | |
1311 | fprintf (stderr, " read INCR realloc %d -> %d\n", | |
1312 | *size_bytes_ret, offset + tmp_size_bytes); | |
1313 | #endif | |
1314 | *size_bytes_ret = offset + tmp_size_bytes; | |
1315 | *data_ret = (unsigned char *) xrealloc (*data_ret, *size_bytes_ret); | |
1316 | } | |
018cfa07 | 1317 | bcopy (tmp_data, (*data_ret) + offset, tmp_size_bytes); |
ede4db72 RS |
1318 | offset += tmp_size_bytes; |
1319 | xfree (tmp_data); | |
1320 | } | |
1321 | } | |
1322 | \f | |
1323 | /* Once a requested selection is "ready" (we got a SelectionNotify event), | |
1324 | fetch value from property PROPERTY of X window WINDOW on display DISPLAY. | |
1325 | TARGET_TYPE and SELECTION_ATOM are used in error message if this fails. */ | |
1326 | ||
1327 | static Lisp_Object | |
1328 | x_get_window_property_as_lisp_data (display, window, property, target_type, | |
1329 | selection_atom) | |
1330 | Display *display; | |
1331 | Window window; | |
1332 | Atom property; | |
1333 | Lisp_Object target_type; /* for error messages only */ | |
1334 | Atom selection_atom; /* for error messages only */ | |
1335 | { | |
1336 | Atom actual_type; | |
1337 | int actual_format; | |
1338 | unsigned long actual_size; | |
1339 | unsigned char *data = 0; | |
1340 | int bytes = 0; | |
1341 | Lisp_Object val; | |
5c3a351a | 1342 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 RS |
1343 | |
1344 | x_get_window_property (display, window, property, &data, &bytes, | |
1345 | &actual_type, &actual_format, &actual_size, 1); | |
1346 | if (! data) | |
1347 | { | |
1348 | int there_is_a_selection_owner; | |
1349 | BLOCK_INPUT; | |
1350 | there_is_a_selection_owner | |
1351 | = XGetSelectionOwner (display, selection_atom); | |
1352 | UNBLOCK_INPUT; | |
1353 | while (1) /* Note debugger can no longer return, so this is obsolete */ | |
1354 | Fsignal (Qerror, | |
1355 | there_is_a_selection_owner ? | |
1356 | Fcons (build_string ("selection owner couldn't convert"), | |
1357 | actual_type | |
1358 | ? Fcons (target_type, | |
5c3a351a RS |
1359 | Fcons (x_atom_to_symbol (dpyinfo, display, |
1360 | actual_type), | |
ede4db72 RS |
1361 | Qnil)) |
1362 | : Fcons (target_type, Qnil)) | |
1363 | : Fcons (build_string ("no selection"), | |
5c3a351a RS |
1364 | Fcons (x_atom_to_symbol (dpyinfo, display, |
1365 | selection_atom), | |
ede4db72 RS |
1366 | Qnil))); |
1367 | } | |
1368 | ||
5c3a351a | 1369 | if (actual_type == dpyinfo->Xatom_INCR) |
ede4db72 RS |
1370 | { |
1371 | /* That wasn't really the data, just the beginning. */ | |
1372 | ||
1373 | unsigned int min_size_bytes = * ((unsigned int *) data); | |
1374 | BLOCK_INPUT; | |
1375 | XFree ((char *) data); | |
1376 | UNBLOCK_INPUT; | |
1377 | receive_incremental_selection (display, window, property, target_type, | |
1378 | min_size_bytes, &data, &bytes, | |
1379 | &actual_type, &actual_format, | |
1380 | &actual_size); | |
1381 | } | |
1382 | ||
2f65feb6 RS |
1383 | BLOCK_INPUT; |
1384 | XDeleteProperty (display, window, property); | |
5c3a351a | 1385 | XFlush (display); |
2f65feb6 RS |
1386 | UNBLOCK_INPUT; |
1387 | ||
ede4db72 RS |
1388 | /* It's been read. Now convert it to a lisp object in some semi-rational |
1389 | manner. */ | |
1390 | val = selection_data_to_lisp_data (display, data, bytes, | |
1391 | actual_type, actual_format); | |
1392 | ||
1393 | xfree ((char *) data); | |
1394 | return val; | |
1395 | } | |
1396 | \f | |
1397 | /* These functions convert from the selection data read from the server into | |
1398 | something that we can use from Lisp, and vice versa. | |
1399 | ||
1400 | Type: Format: Size: Lisp Type: | |
1401 | ----- ------- ----- ----------- | |
1402 | * 8 * String | |
1403 | ATOM 32 1 Symbol | |
1404 | ATOM 32 > 1 Vector of Symbols | |
1405 | * 16 1 Integer | |
1406 | * 16 > 1 Vector of Integers | |
1407 | * 32 1 if <=16 bits: Integer | |
1408 | if > 16 bits: Cons of top16, bot16 | |
1409 | * 32 > 1 Vector of the above | |
1410 | ||
1411 | When converting a Lisp number to C, it is assumed to be of format 16 if | |
1412 | it is an integer, and of format 32 if it is a cons of two integers. | |
1413 | ||
1414 | When converting a vector of numbers from Lisp to C, it is assumed to be | |
1415 | of format 16 if every element in the vector is an integer, and is assumed | |
1416 | to be of format 32 if any element is a cons of two integers. | |
1417 | ||
1418 | When converting an object to C, it may be of the form (SYMBOL . <data>) | |
1419 | where SYMBOL is what we should claim that the type is. Format and | |
1420 | representation are as above. */ | |
1421 | ||
1422 | ||
1423 | ||
1424 | static Lisp_Object | |
1425 | selection_data_to_lisp_data (display, data, size, type, format) | |
1426 | Display *display; | |
1427 | unsigned char *data; | |
1428 | Atom type; | |
1429 | int size, format; | |
1430 | { | |
5c3a351a | 1431 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1432 | |
5c3a351a | 1433 | if (type == dpyinfo->Xatom_NULL) |
ede4db72 RS |
1434 | return QNULL; |
1435 | ||
1436 | /* Convert any 8-bit data to a string, for compactness. */ | |
1437 | else if (format == 8) | |
1438 | return make_string ((char *) data, size); | |
1439 | ||
1440 | /* Convert a single atom to a Lisp_Symbol. Convert a set of atoms to | |
1441 | a vector of symbols. | |
1442 | */ | |
1443 | else if (type == XA_ATOM) | |
1444 | { | |
1445 | int i; | |
1446 | if (size == sizeof (Atom)) | |
5c3a351a | 1447 | return x_atom_to_symbol (dpyinfo, display, *((Atom *) data)); |
ede4db72 RS |
1448 | else |
1449 | { | |
1450 | Lisp_Object v = Fmake_vector (size / sizeof (Atom), 0); | |
1451 | for (i = 0; i < size / sizeof (Atom); i++) | |
5c3a351a RS |
1452 | Faset (v, i, x_atom_to_symbol (dpyinfo, display, |
1453 | ((Atom *) data) [i])); | |
ede4db72 RS |
1454 | return v; |
1455 | } | |
1456 | } | |
1457 | ||
1458 | /* Convert a single 16 or small 32 bit number to a Lisp_Int. | |
1459 | If the number is > 16 bits, convert it to a cons of integers, | |
1460 | 16 bits in each half. | |
1461 | */ | |
1462 | else if (format == 32 && size == sizeof (long)) | |
1463 | return long_to_cons (((unsigned long *) data) [0]); | |
1464 | else if (format == 16 && size == sizeof (short)) | |
1465 | return make_number ((int) (((unsigned short *) data) [0])); | |
1466 | ||
1467 | /* Convert any other kind of data to a vector of numbers, represented | |
1468 | as above (as an integer, or a cons of two 16 bit integers.) | |
1469 | */ | |
1470 | else if (format == 16) | |
1471 | { | |
1472 | int i; | |
1473 | Lisp_Object v = Fmake_vector (size / 4, 0); | |
1474 | for (i = 0; i < size / 4; i++) | |
1475 | { | |
1476 | int j = (int) ((unsigned short *) data) [i]; | |
1477 | Faset (v, i, make_number (j)); | |
1478 | } | |
1479 | return v; | |
1480 | } | |
1481 | else | |
1482 | { | |
1483 | int i; | |
1484 | Lisp_Object v = Fmake_vector (size / 4, 0); | |
1485 | for (i = 0; i < size / 4; i++) | |
1486 | { | |
1487 | unsigned long j = ((unsigned long *) data) [i]; | |
1488 | Faset (v, i, long_to_cons (j)); | |
1489 | } | |
1490 | return v; | |
1491 | } | |
1492 | } | |
1493 | ||
1494 | ||
1495 | static void | |
1496 | lisp_data_to_selection_data (display, obj, | |
aca39f42 RS |
1497 | data_ret, type_ret, size_ret, |
1498 | format_ret, nofree_ret) | |
ede4db72 RS |
1499 | Display *display; |
1500 | Lisp_Object obj; | |
1501 | unsigned char **data_ret; | |
1502 | Atom *type_ret; | |
1503 | unsigned int *size_ret; | |
1504 | int *format_ret; | |
aca39f42 | 1505 | int *nofree_ret; |
ede4db72 RS |
1506 | { |
1507 | Lisp_Object type = Qnil; | |
5c3a351a | 1508 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
aca39f42 RS |
1509 | |
1510 | *nofree_ret = 0; | |
1511 | ||
ede4db72 RS |
1512 | if (CONSP (obj) && SYMBOLP (XCONS (obj)->car)) |
1513 | { | |
1514 | type = XCONS (obj)->car; | |
1515 | obj = XCONS (obj)->cdr; | |
1516 | if (CONSP (obj) && NILP (XCONS (obj)->cdr)) | |
1517 | obj = XCONS (obj)->car; | |
1518 | } | |
1519 | ||
1520 | if (EQ (obj, QNULL) || (EQ (type, QNULL))) | |
1521 | { /* This is not the same as declining */ | |
1522 | *format_ret = 32; | |
1523 | *size_ret = 0; | |
1524 | *data_ret = 0; | |
1525 | type = QNULL; | |
1526 | } | |
1527 | else if (STRINGP (obj)) | |
1528 | { | |
1529 | *format_ret = 8; | |
1530 | *size_ret = XSTRING (obj)->size; | |
aca39f42 RS |
1531 | *data_ret = XSTRING (obj)->data; |
1532 | *nofree_ret = 1; | |
ede4db72 RS |
1533 | if (NILP (type)) type = QSTRING; |
1534 | } | |
1535 | else if (SYMBOLP (obj)) | |
1536 | { | |
1537 | *format_ret = 32; | |
1538 | *size_ret = 1; | |
1539 | *data_ret = (unsigned char *) xmalloc (sizeof (Atom) + 1); | |
1540 | (*data_ret) [sizeof (Atom)] = 0; | |
5c3a351a | 1541 | (*(Atom **) data_ret) [0] = symbol_to_x_atom (dpyinfo, display, obj); |
ede4db72 RS |
1542 | if (NILP (type)) type = QATOM; |
1543 | } | |
7da64e5c | 1544 | else if (INTEGERP (obj) |
ede4db72 RS |
1545 | && XINT (obj) < 0xFFFF |
1546 | && XINT (obj) > -0xFFFF) | |
1547 | { | |
1548 | *format_ret = 16; | |
1549 | *size_ret = 1; | |
1550 | *data_ret = (unsigned char *) xmalloc (sizeof (short) + 1); | |
1551 | (*data_ret) [sizeof (short)] = 0; | |
1552 | (*(short **) data_ret) [0] = (short) XINT (obj); | |
1553 | if (NILP (type)) type = QINTEGER; | |
1554 | } | |
a87ed99c RS |
1555 | else if (INTEGERP (obj) |
1556 | || (CONSP (obj) && INTEGERP (XCONS (obj)->car) | |
1557 | && (INTEGERP (XCONS (obj)->cdr) | |
1558 | || (CONSP (XCONS (obj)->cdr) | |
1559 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car))))) | |
ede4db72 RS |
1560 | { |
1561 | *format_ret = 32; | |
1562 | *size_ret = 1; | |
1563 | *data_ret = (unsigned char *) xmalloc (sizeof (long) + 1); | |
1564 | (*data_ret) [sizeof (long)] = 0; | |
1565 | (*(unsigned long **) data_ret) [0] = cons_to_long (obj); | |
1566 | if (NILP (type)) type = QINTEGER; | |
1567 | } | |
1568 | else if (VECTORP (obj)) | |
1569 | { | |
1570 | /* Lisp_Vectors may represent a set of ATOMs; | |
1571 | a set of 16 or 32 bit INTEGERs; | |
1572 | or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...] | |
1573 | */ | |
1574 | int i; | |
1575 | ||
1576 | if (SYMBOLP (XVECTOR (obj)->contents [0])) | |
1577 | /* This vector is an ATOM set */ | |
1578 | { | |
1579 | if (NILP (type)) type = QATOM; | |
1580 | *size_ret = XVECTOR (obj)->size; | |
1581 | *format_ret = 32; | |
1582 | *data_ret = (unsigned char *) xmalloc ((*size_ret) * sizeof (Atom)); | |
1583 | for (i = 0; i < *size_ret; i++) | |
1584 | if (SYMBOLP (XVECTOR (obj)->contents [i])) | |
1585 | (*(Atom **) data_ret) [i] | |
5c3a351a | 1586 | = symbol_to_x_atom (dpyinfo, display, XVECTOR (obj)->contents [i]); |
ede4db72 RS |
1587 | else |
1588 | Fsignal (Qerror, /* Qselection_error */ | |
1589 | Fcons (build_string | |
1590 | ("all elements of selection vector must have same type"), | |
1591 | Fcons (obj, Qnil))); | |
1592 | } | |
1593 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1594 | else if (VECTORP (XVECTOR (obj)->contents [0])) | |
1595 | /* This vector is an ATOM_PAIR set */ | |
1596 | { | |
1597 | if (NILP (type)) type = QATOM_PAIR; | |
1598 | *size_ret = XVECTOR (obj)->size; | |
1599 | *format_ret = 32; | |
1600 | *data_ret = (unsigned char *) | |
1601 | xmalloc ((*size_ret) * sizeof (Atom) * 2); | |
1602 | for (i = 0; i < *size_ret; i++) | |
1603 | if (VECTORP (XVECTOR (obj)->contents [i])) | |
1604 | { | |
1605 | Lisp_Object pair = XVECTOR (obj)->contents [i]; | |
1606 | if (XVECTOR (pair)->size != 2) | |
1607 | Fsignal (Qerror, | |
1608 | Fcons (build_string | |
1609 | ("elements of the vector must be vectors of exactly two elements"), | |
1610 | Fcons (pair, Qnil))); | |
1611 | ||
1612 | (*(Atom **) data_ret) [i * 2] | |
5c3a351a RS |
1613 | = symbol_to_x_atom (dpyinfo, display, |
1614 | XVECTOR (pair)->contents [0]); | |
ede4db72 | 1615 | (*(Atom **) data_ret) [(i * 2) + 1] |
5c3a351a RS |
1616 | = symbol_to_x_atom (dpyinfo, display, |
1617 | XVECTOR (pair)->contents [1]); | |
ede4db72 RS |
1618 | } |
1619 | else | |
1620 | Fsignal (Qerror, | |
1621 | Fcons (build_string | |
1622 | ("all elements of the vector must be of the same type"), | |
1623 | Fcons (obj, Qnil))); | |
1624 | ||
1625 | } | |
1626 | #endif | |
1627 | else | |
1628 | /* This vector is an INTEGER set, or something like it */ | |
1629 | { | |
1630 | *size_ret = XVECTOR (obj)->size; | |
1631 | if (NILP (type)) type = QINTEGER; | |
1632 | *format_ret = 16; | |
1633 | for (i = 0; i < *size_ret; i++) | |
1634 | if (CONSP (XVECTOR (obj)->contents [i])) | |
1635 | *format_ret = 32; | |
7da64e5c | 1636 | else if (!INTEGERP (XVECTOR (obj)->contents [i])) |
ede4db72 RS |
1637 | Fsignal (Qerror, /* Qselection_error */ |
1638 | Fcons (build_string | |
1639 | ("elements of selection vector must be integers or conses of integers"), | |
1640 | Fcons (obj, Qnil))); | |
1641 | ||
1642 | *data_ret = (unsigned char *) xmalloc (*size_ret * (*format_ret/8)); | |
1643 | for (i = 0; i < *size_ret; i++) | |
1644 | if (*format_ret == 32) | |
1645 | (*((unsigned long **) data_ret)) [i] | |
1646 | = cons_to_long (XVECTOR (obj)->contents [i]); | |
1647 | else | |
1648 | (*((unsigned short **) data_ret)) [i] | |
1649 | = (unsigned short) cons_to_long (XVECTOR (obj)->contents [i]); | |
1650 | } | |
1651 | } | |
1652 | else | |
1653 | Fsignal (Qerror, /* Qselection_error */ | |
1654 | Fcons (build_string ("unrecognised selection data"), | |
1655 | Fcons (obj, Qnil))); | |
1656 | ||
5c3a351a | 1657 | *type_ret = symbol_to_x_atom (dpyinfo, display, type); |
ede4db72 RS |
1658 | } |
1659 | ||
1660 | static Lisp_Object | |
1661 | clean_local_selection_data (obj) | |
1662 | Lisp_Object obj; | |
1663 | { | |
1664 | if (CONSP (obj) | |
7da64e5c | 1665 | && INTEGERP (XCONS (obj)->car) |
ede4db72 | 1666 | && CONSP (XCONS (obj)->cdr) |
7da64e5c | 1667 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car) |
ede4db72 RS |
1668 | && NILP (XCONS (XCONS (obj)->cdr)->cdr)) |
1669 | obj = Fcons (XCONS (obj)->car, XCONS (obj)->cdr); | |
1670 | ||
1671 | if (CONSP (obj) | |
7da64e5c RS |
1672 | && INTEGERP (XCONS (obj)->car) |
1673 | && INTEGERP (XCONS (obj)->cdr)) | |
ede4db72 RS |
1674 | { |
1675 | if (XINT (XCONS (obj)->car) == 0) | |
1676 | return XCONS (obj)->cdr; | |
1677 | if (XINT (XCONS (obj)->car) == -1) | |
1678 | return make_number (- XINT (XCONS (obj)->cdr)); | |
1679 | } | |
1680 | if (VECTORP (obj)) | |
1681 | { | |
1682 | int i; | |
1683 | int size = XVECTOR (obj)->size; | |
1684 | Lisp_Object copy; | |
1685 | if (size == 1) | |
1686 | return clean_local_selection_data (XVECTOR (obj)->contents [0]); | |
1687 | copy = Fmake_vector (size, Qnil); | |
1688 | for (i = 0; i < size; i++) | |
1689 | XVECTOR (copy)->contents [i] | |
1690 | = clean_local_selection_data (XVECTOR (obj)->contents [i]); | |
1691 | return copy; | |
1692 | } | |
1693 | return obj; | |
1694 | } | |
1695 | \f | |
1696 | /* Called from XTread_socket to handle SelectionNotify events. | |
606140dd KH |
1697 | If it's the selection we are waiting for, stop waiting |
1698 | by setting the car of reading_selection_reply to non-nil. | |
1699 | We store t there if the reply is successful, lambda if not. */ | |
ede4db72 RS |
1700 | |
1701 | void | |
1702 | x_handle_selection_notify (event) | |
1703 | XSelectionEvent *event; | |
1704 | { | |
5d0ba25b | 1705 | if (event->requestor != reading_selection_window) |
ede4db72 RS |
1706 | return; |
1707 | if (event->selection != reading_which_selection) | |
1708 | return; | |
1709 | ||
606140dd KH |
1710 | XCONS (reading_selection_reply)->car |
1711 | = (event->property != 0 ? Qt : Qlambda); | |
ede4db72 RS |
1712 | } |
1713 | ||
1714 | \f | |
1715 | DEFUN ("x-own-selection-internal", | |
1716 | Fx_own_selection_internal, Sx_own_selection_internal, | |
1717 | 2, 2, 0, | |
1718 | "Assert an X selection of the given TYPE with the given VALUE.\n\ | |
1719 | TYPE is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1720 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1721 | VALUE is typically a string, or a cons of two markers, but may be\n\ | |
a87ed99c | 1722 | anything that the functions on `selection-converter-alist' know about.") |
ede4db72 RS |
1723 | (selection_name, selection_value) |
1724 | Lisp_Object selection_name, selection_value; | |
1725 | { | |
703e0710 | 1726 | check_x (); |
ede4db72 | 1727 | CHECK_SYMBOL (selection_name, 0); |
606140dd | 1728 | if (NILP (selection_value)) error ("selection-value may not be nil"); |
ede4db72 RS |
1729 | x_own_selection (selection_name, selection_value); |
1730 | return selection_value; | |
1731 | } | |
1732 | ||
1733 | ||
1734 | /* Request the selection value from the owner. If we are the owner, | |
1735 | simply return our selection value. If we are not the owner, this | |
1736 | will block until all of the data has arrived. */ | |
1737 | ||
1738 | DEFUN ("x-get-selection-internal", | |
1739 | Fx_get_selection_internal, Sx_get_selection_internal, 2, 2, 0, | |
1740 | "Return text selected from some X window.\n\ | |
1741 | SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1742 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
a87ed99c | 1743 | TYPE is the type of data desired, typically `STRING'.") |
ede4db72 RS |
1744 | (selection_symbol, target_type) |
1745 | Lisp_Object selection_symbol, target_type; | |
1746 | { | |
1747 | Lisp_Object val = Qnil; | |
1748 | struct gcpro gcpro1, gcpro2; | |
1749 | GCPRO2 (target_type, val); /* we store newly consed data into these */ | |
703e0710 | 1750 | check_x (); |
ede4db72 RS |
1751 | CHECK_SYMBOL (selection_symbol, 0); |
1752 | ||
1753 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1754 | if (CONSP (target_type) | |
1755 | && XCONS (target_type)->car == QMULTIPLE) | |
1756 | { | |
1757 | CHECK_VECTOR (XCONS (target_type)->cdr, 0); | |
1758 | /* So we don't destructively modify this... */ | |
1759 | target_type = copy_multiple_data (target_type); | |
1760 | } | |
1761 | else | |
1762 | #endif | |
1763 | CHECK_SYMBOL (target_type, 0); | |
1764 | ||
1765 | val = x_get_local_selection (selection_symbol, target_type); | |
1766 | ||
1767 | if (NILP (val)) | |
1768 | { | |
1769 | val = x_get_foreign_selection (selection_symbol, target_type); | |
1770 | goto DONE; | |
1771 | } | |
1772 | ||
1773 | if (CONSP (val) | |
1774 | && SYMBOLP (XCONS (val)->car)) | |
1775 | { | |
1776 | val = XCONS (val)->cdr; | |
1777 | if (CONSP (val) && NILP (XCONS (val)->cdr)) | |
1778 | val = XCONS (val)->car; | |
1779 | } | |
1780 | val = clean_local_selection_data (val); | |
1781 | DONE: | |
1782 | UNGCPRO; | |
1783 | return val; | |
1784 | } | |
1785 | ||
1786 | DEFUN ("x-disown-selection-internal", | |
1787 | Fx_disown_selection_internal, Sx_disown_selection_internal, 1, 2, 0, | |
a87ed99c RS |
1788 | "If we own the selection SELECTION, disown it.\n\ |
1789 | Disowning it means there is no such selection.") | |
ede4db72 RS |
1790 | (selection, time) |
1791 | Lisp_Object selection; | |
1792 | Lisp_Object time; | |
1793 | { | |
ede4db72 RS |
1794 | Time timestamp; |
1795 | Atom selection_atom; | |
1796 | XSelectionClearEvent event; | |
3834c318 | 1797 | Display *display; |
5c3a351a | 1798 | struct x_display_info *dpyinfo; |
ede4db72 | 1799 | |
703e0710 | 1800 | check_x (); |
3834c318 | 1801 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1802 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
ede4db72 RS |
1803 | CHECK_SYMBOL (selection, 0); |
1804 | if (NILP (time)) | |
7da64e5c | 1805 | timestamp = last_event_timestamp; |
ede4db72 RS |
1806 | else |
1807 | timestamp = cons_to_long (time); | |
1808 | ||
1809 | if (NILP (assq_no_quit (selection, Vselection_alist))) | |
1810 | return Qnil; /* Don't disown the selection when we're not the owner. */ | |
1811 | ||
5c3a351a | 1812 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection); |
ede4db72 RS |
1813 | |
1814 | BLOCK_INPUT; | |
1815 | XSetSelectionOwner (display, selection_atom, None, timestamp); | |
1816 | UNBLOCK_INPUT; | |
1817 | ||
eb8c3be9 | 1818 | /* It doesn't seem to be guaranteed that a SelectionClear event will be |
ede4db72 RS |
1819 | generated for a window which owns the selection when that window sets |
1820 | the selection owner to None. The NCD server does, the MIT Sun4 server | |
1821 | doesn't. So we synthesize one; this means we might get two, but | |
1822 | that's ok, because the second one won't have any effect. */ | |
8d47f8c4 RS |
1823 | SELECTION_EVENT_DISPLAY (&event) = display; |
1824 | SELECTION_EVENT_SELECTION (&event) = selection_atom; | |
1825 | SELECTION_EVENT_TIME (&event) = timestamp; | |
ede4db72 RS |
1826 | x_handle_selection_clear (&event); |
1827 | ||
1828 | return Qt; | |
1829 | } | |
1830 | ||
a87ed99c RS |
1831 | /* Get rid of all the selections in buffer BUFFER. |
1832 | This is used when we kill a buffer. */ | |
1833 | ||
1834 | void | |
1835 | x_disown_buffer_selections (buffer) | |
1836 | Lisp_Object buffer; | |
1837 | { | |
1838 | Lisp_Object tail; | |
1839 | struct buffer *buf = XBUFFER (buffer); | |
1840 | ||
1841 | for (tail = Vselection_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1842 | { | |
1843 | Lisp_Object elt, value; | |
1844 | elt = XCONS (tail)->car; | |
1845 | value = XCONS (elt)->cdr; | |
1846 | if (CONSP (value) && MARKERP (XCONS (value)->car) | |
1847 | && XMARKER (XCONS (value)->car)->buffer == buf) | |
1848 | Fx_disown_selection_internal (XCONS (elt)->car, Qnil); | |
1849 | } | |
1850 | } | |
ede4db72 RS |
1851 | |
1852 | DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p, | |
1853 | 0, 1, 0, | |
a87ed99c | 1854 | "Whether the current Emacs process owns the given X Selection.\n\ |
ede4db72 RS |
1855 | The arg should be the name of the selection in question, typically one of\n\ |
1856 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1857 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1858 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
1859 | and t is the same as `SECONDARY'.)") | |
1860 | (selection) | |
1861 | Lisp_Object selection; | |
1862 | { | |
703e0710 | 1863 | check_x (); |
ede4db72 RS |
1864 | CHECK_SYMBOL (selection, 0); |
1865 | if (EQ (selection, Qnil)) selection = QPRIMARY; | |
1866 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
1867 | ||
1868 | if (NILP (Fassq (selection, Vselection_alist))) | |
1869 | return Qnil; | |
1870 | return Qt; | |
1871 | } | |
1872 | ||
1873 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
1874 | 0, 1, 0, | |
1875 | "Whether there is an owner for the given X Selection.\n\ | |
1876 | The arg should be the name of the selection in question, typically one of\n\ | |
1877 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1878 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1879 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
1880 | and t is the same as `SECONDARY'.)") | |
1881 | (selection) | |
1882 | Lisp_Object selection; | |
1883 | { | |
1884 | Window owner; | |
356ba514 | 1885 | Atom atom; |
3834c318 RS |
1886 | Display *dpy; |
1887 | ||
b8c70430 | 1888 | /* It should be safe to call this before we have an X frame. */ |
c6423dc1 | 1889 | if (! FRAME_X_P (selected_frame)) |
b8c70430 RS |
1890 | return Qnil; |
1891 | ||
3834c318 | 1892 | dpy = FRAME_X_DISPLAY (selected_frame); |
ede4db72 RS |
1893 | CHECK_SYMBOL (selection, 0); |
1894 | if (!NILP (Fx_selection_owner_p (selection))) | |
1895 | return Qt; | |
356ba514 RS |
1896 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
1897 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
5c3a351a RS |
1898 | atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
1899 | dpy, selection); | |
356ba514 RS |
1900 | if (atom == 0) |
1901 | return Qnil; | |
ede4db72 | 1902 | BLOCK_INPUT; |
356ba514 | 1903 | owner = XGetSelectionOwner (dpy, atom); |
ede4db72 RS |
1904 | UNBLOCK_INPUT; |
1905 | return (owner ? Qt : Qnil); | |
1906 | } | |
1907 | ||
1908 | \f | |
1909 | #ifdef CUT_BUFFER_SUPPORT | |
1910 | ||
ede4db72 RS |
1911 | /* Ensure that all 8 cut buffers exist. ICCCM says we gotta... */ |
1912 | static void | |
1913 | initialize_cut_buffers (display, window) | |
1914 | Display *display; | |
1915 | Window window; | |
1916 | { | |
1917 | unsigned char *data = (unsigned char *) ""; | |
1918 | BLOCK_INPUT; | |
1919 | #define FROB(atom) XChangeProperty (display, window, atom, XA_STRING, 8, \ | |
1920 | PropModeAppend, data, 0) | |
1921 | FROB (XA_CUT_BUFFER0); | |
1922 | FROB (XA_CUT_BUFFER1); | |
1923 | FROB (XA_CUT_BUFFER2); | |
1924 | FROB (XA_CUT_BUFFER3); | |
1925 | FROB (XA_CUT_BUFFER4); | |
1926 | FROB (XA_CUT_BUFFER5); | |
1927 | FROB (XA_CUT_BUFFER6); | |
1928 | FROB (XA_CUT_BUFFER7); | |
1929 | #undef FROB | |
1930 | UNBLOCK_INPUT; | |
ede4db72 RS |
1931 | } |
1932 | ||
1933 | ||
a87ed99c | 1934 | #define CHECK_CUT_BUFFER(symbol,n) \ |
ede4db72 RS |
1935 | { CHECK_SYMBOL ((symbol), (n)); \ |
1936 | if (!EQ((symbol), QCUT_BUFFER0) && !EQ((symbol), QCUT_BUFFER1) \ | |
1937 | && !EQ((symbol), QCUT_BUFFER2) && !EQ((symbol), QCUT_BUFFER3) \ | |
1938 | && !EQ((symbol), QCUT_BUFFER4) && !EQ((symbol), QCUT_BUFFER5) \ | |
1939 | && !EQ((symbol), QCUT_BUFFER6) && !EQ((symbol), QCUT_BUFFER7)) \ | |
1940 | Fsignal (Qerror, \ | |
a87ed99c | 1941 | Fcons (build_string ("doesn't name a cut buffer"), \ |
ede4db72 RS |
1942 | Fcons ((symbol), Qnil))); \ |
1943 | } | |
1944 | ||
a87ed99c RS |
1945 | DEFUN ("x-get-cut-buffer-internal", Fx_get_cut_buffer_internal, |
1946 | Sx_get_cut_buffer_internal, 1, 1, 0, | |
1947 | "Returns the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
1948 | (buffer) |
1949 | Lisp_Object buffer; | |
1950 | { | |
3834c318 | 1951 | Window window; |
ede4db72 RS |
1952 | Atom buffer_atom; |
1953 | unsigned char *data; | |
1954 | int bytes; | |
1955 | Atom type; | |
1956 | int format; | |
1957 | unsigned long size; | |
1958 | Lisp_Object ret; | |
3834c318 | 1959 | Display *display; |
5c3a351a | 1960 | struct x_display_info *dpyinfo; |
ede4db72 | 1961 | |
703e0710 | 1962 | check_x (); |
3834c318 | 1963 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1964 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
3834c318 | 1965 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ |
a87ed99c | 1966 | CHECK_CUT_BUFFER (buffer, 0); |
5c3a351a | 1967 | buffer_atom = symbol_to_x_atom (dpyinfo, display, buffer); |
ede4db72 RS |
1968 | |
1969 | x_get_window_property (display, window, buffer_atom, &data, &bytes, | |
1970 | &type, &format, &size, 0); | |
1971 | if (!data) return Qnil; | |
1972 | ||
1973 | if (format != 8 || type != XA_STRING) | |
1974 | Fsignal (Qerror, | |
1975 | Fcons (build_string ("cut buffer doesn't contain 8-bit data"), | |
5c3a351a | 1976 | Fcons (x_atom_to_symbol (dpyinfo, display, type), |
ede4db72 RS |
1977 | Fcons (make_number (format), Qnil)))); |
1978 | ||
1979 | ret = (bytes ? make_string ((char *) data, bytes) : Qnil); | |
1980 | xfree (data); | |
1981 | return ret; | |
1982 | } | |
1983 | ||
1984 | ||
a87ed99c RS |
1985 | DEFUN ("x-store-cut-buffer-internal", Fx_store_cut_buffer_internal, |
1986 | Sx_store_cut_buffer_internal, 2, 2, 0, | |
1987 | "Sets the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
1988 | (buffer, string) |
1989 | Lisp_Object buffer, string; | |
1990 | { | |
3834c318 | 1991 | Window window; |
ede4db72 RS |
1992 | Atom buffer_atom; |
1993 | unsigned char *data; | |
1994 | int bytes; | |
1995 | int bytes_remaining; | |
3834c318 RS |
1996 | int max_bytes; |
1997 | Display *display; | |
ede4db72 | 1998 | |
703e0710 | 1999 | check_x (); |
3834c318 RS |
2000 | display = FRAME_X_DISPLAY (selected_frame); |
2001 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
2002 | ||
2003 | max_bytes = SELECTION_QUANTUM (display); | |
2004 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
2005 | max_bytes = MAX_SELECTION_QUANTUM; | |
2006 | ||
a87ed99c | 2007 | CHECK_CUT_BUFFER (buffer, 0); |
ede4db72 | 2008 | CHECK_STRING (string, 0); |
5c3a351a RS |
2009 | buffer_atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
2010 | display, buffer); | |
ede4db72 RS |
2011 | data = (unsigned char *) XSTRING (string)->data; |
2012 | bytes = XSTRING (string)->size; | |
2013 | bytes_remaining = bytes; | |
2014 | ||
04649dbc KH |
2015 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
2016 | { | |
2017 | initialize_cut_buffers (display, window); | |
2018 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; | |
2019 | } | |
ede4db72 RS |
2020 | |
2021 | BLOCK_INPUT; | |
10608c8c RS |
2022 | |
2023 | /* Don't mess up with an empty value. */ | |
2024 | if (!bytes_remaining) | |
2025 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2026 | PropModeReplace, data, 0); | |
2027 | ||
ede4db72 RS |
2028 | while (bytes_remaining) |
2029 | { | |
2030 | int chunk = (bytes_remaining < max_bytes | |
2031 | ? bytes_remaining : max_bytes); | |
2032 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2033 | (bytes_remaining == bytes | |
2034 | ? PropModeReplace | |
2035 | : PropModeAppend), | |
2036 | data, chunk); | |
2037 | data += chunk; | |
2038 | bytes_remaining -= chunk; | |
2039 | } | |
2040 | UNBLOCK_INPUT; | |
2041 | return string; | |
2042 | } | |
2043 | ||
2044 | ||
a87ed99c RS |
2045 | DEFUN ("x-rotate-cut-buffers-internal", Fx_rotate_cut_buffers_internal, |
2046 | Sx_rotate_cut_buffers_internal, 1, 1, 0, | |
2047 | "Rotate the values of the cut buffers by the given number of steps;\n\ | |
ede4db72 RS |
2048 | positive means move values forward, negative means backward.") |
2049 | (n) | |
2050 | Lisp_Object n; | |
2051 | { | |
3834c318 RS |
2052 | Window window; |
2053 | Atom props[8]; | |
2054 | Display *display; | |
ede4db72 | 2055 | |
703e0710 | 2056 | check_x (); |
3834c318 RS |
2057 | display = FRAME_X_DISPLAY (selected_frame); |
2058 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
7da64e5c | 2059 | CHECK_NUMBER (n, 0); |
3834c318 RS |
2060 | if (XINT (n) == 0) |
2061 | return n; | |
04649dbc KH |
2062 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
2063 | { | |
2064 | initialize_cut_buffers (display, window); | |
2065 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; | |
2066 | } | |
3834c318 | 2067 | |
ede4db72 RS |
2068 | props[0] = XA_CUT_BUFFER0; |
2069 | props[1] = XA_CUT_BUFFER1; | |
2070 | props[2] = XA_CUT_BUFFER2; | |
2071 | props[3] = XA_CUT_BUFFER3; | |
2072 | props[4] = XA_CUT_BUFFER4; | |
2073 | props[5] = XA_CUT_BUFFER5; | |
2074 | props[6] = XA_CUT_BUFFER6; | |
2075 | props[7] = XA_CUT_BUFFER7; | |
2076 | BLOCK_INPUT; | |
2077 | XRotateWindowProperties (display, window, props, 8, XINT (n)); | |
2078 | UNBLOCK_INPUT; | |
2079 | return n; | |
2080 | } | |
2081 | ||
2082 | #endif | |
2083 | \f | |
ede4db72 RS |
2084 | void |
2085 | syms_of_xselect () | |
2086 | { | |
ede4db72 RS |
2087 | defsubr (&Sx_get_selection_internal); |
2088 | defsubr (&Sx_own_selection_internal); | |
2089 | defsubr (&Sx_disown_selection_internal); | |
2090 | defsubr (&Sx_selection_owner_p); | |
2091 | defsubr (&Sx_selection_exists_p); | |
2092 | ||
2093 | #ifdef CUT_BUFFER_SUPPORT | |
a87ed99c RS |
2094 | defsubr (&Sx_get_cut_buffer_internal); |
2095 | defsubr (&Sx_store_cut_buffer_internal); | |
2096 | defsubr (&Sx_rotate_cut_buffers_internal); | |
ede4db72 RS |
2097 | #endif |
2098 | ||
2099 | reading_selection_reply = Fcons (Qnil, Qnil); | |
2100 | staticpro (&reading_selection_reply); | |
2101 | reading_selection_window = 0; | |
2102 | reading_which_selection = 0; | |
2103 | ||
2104 | property_change_wait_list = 0; | |
2f65feb6 | 2105 | prop_location_identifier = 0; |
ede4db72 RS |
2106 | property_change_reply = Fcons (Qnil, Qnil); |
2107 | staticpro (&property_change_reply); | |
2108 | ||
2109 | Vselection_alist = Qnil; | |
2110 | staticpro (&Vselection_alist); | |
2111 | ||
2112 | DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist, | |
2113 | "An alist associating X Windows selection-types with functions.\n\ | |
2114 | These functions are called to convert the selection, with three args:\n\ | |
2115 | the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2116 | a desired type to which the selection should be converted;\n\ | |
2117 | and the local selection value (whatever was given to `x-own-selection').\n\ | |
2118 | \n\ | |
2119 | The function should return the value to send to the X server\n\ | |
2120 | \(typically a string). A return value of nil\n\ | |
2121 | means that the conversion could not be done.\n\ | |
2122 | A return value which is the symbol `NULL'\n\ | |
2123 | means that a side-effect was executed,\n\ | |
2124 | and there is no meaningful selection value."); | |
2125 | Vselection_converter_alist = Qnil; | |
2126 | ||
2127 | DEFVAR_LISP ("x-lost-selection-hooks", &Vx_lost_selection_hooks, | |
2128 | "A list of functions to be called when Emacs loses an X selection.\n\ | |
2129 | \(This happens when some other X client makes its own selection\n\ | |
2130 | or when a Lisp program explicitly clears the selection.)\n\ | |
2131 | The functions are called with one argument, the selection type\n\ | |
d31b6237 | 2132 | \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD')."); |
ede4db72 RS |
2133 | Vx_lost_selection_hooks = Qnil; |
2134 | ||
2135 | DEFVAR_LISP ("x-sent-selection-hooks", &Vx_sent_selection_hooks, | |
2136 | "A list of functions to be called when Emacs answers a selection request.\n\ | |
2137 | The functions are called with four arguments:\n\ | |
2138 | - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2139 | - the selection-type which Emacs was asked to convert the\n\ | |
2140 | selection into before sending (for example, `STRING' or `LENGTH');\n\ | |
2141 | - a flag indicating success or failure for responding to the request.\n\ | |
2142 | We might have failed (and declined the request) for any number of reasons,\n\ | |
2143 | including being asked for a selection that we no longer own, or being asked\n\ | |
2144 | to convert into a type that we don't know about or that is inappropriate.\n\ | |
2145 | This hook doesn't let you change the behavior of Emacs's selection replies,\n\ | |
2146 | it merely informs you that they have happened."); | |
2147 | Vx_sent_selection_hooks = Qnil; | |
2148 | ||
2149 | DEFVAR_INT ("x-selection-timeout", &x_selection_timeout, | |
80da0190 | 2150 | "Number of milliseconds to wait for a selection reply.\n\ |
2a1a4c9d | 2151 | If the selection owner doesn't reply in this time, we give up.\n\ |
ede4db72 | 2152 | A value of 0 means wait as long as necessary. This is initialized from the\n\ |
80da0190 | 2153 | \"*selectionTimeout\" resource."); |
ede4db72 RS |
2154 | x_selection_timeout = 0; |
2155 | ||
2156 | QPRIMARY = intern ("PRIMARY"); staticpro (&QPRIMARY); | |
2157 | QSECONDARY = intern ("SECONDARY"); staticpro (&QSECONDARY); | |
2158 | QSTRING = intern ("STRING"); staticpro (&QSTRING); | |
2159 | QINTEGER = intern ("INTEGER"); staticpro (&QINTEGER); | |
2160 | QCLIPBOARD = intern ("CLIPBOARD"); staticpro (&QCLIPBOARD); | |
2161 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2162 | QTEXT = intern ("TEXT"); staticpro (&QTEXT); | |
2163 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2164 | QDELETE = intern ("DELETE"); staticpro (&QDELETE); | |
2165 | QMULTIPLE = intern ("MULTIPLE"); staticpro (&QMULTIPLE); | |
2166 | QINCR = intern ("INCR"); staticpro (&QINCR); | |
2167 | QEMACS_TMP = intern ("_EMACS_TMP_"); staticpro (&QEMACS_TMP); | |
2168 | QTARGETS = intern ("TARGETS"); staticpro (&QTARGETS); | |
2169 | QATOM = intern ("ATOM"); staticpro (&QATOM); | |
2170 | QATOM_PAIR = intern ("ATOM_PAIR"); staticpro (&QATOM_PAIR); | |
2171 | QNULL = intern ("NULL"); staticpro (&QNULL); | |
2172 | ||
2173 | #ifdef CUT_BUFFER_SUPPORT | |
2174 | QCUT_BUFFER0 = intern ("CUT_BUFFER0"); staticpro (&QCUT_BUFFER0); | |
2175 | QCUT_BUFFER1 = intern ("CUT_BUFFER1"); staticpro (&QCUT_BUFFER1); | |
2176 | QCUT_BUFFER2 = intern ("CUT_BUFFER2"); staticpro (&QCUT_BUFFER2); | |
2177 | QCUT_BUFFER3 = intern ("CUT_BUFFER3"); staticpro (&QCUT_BUFFER3); | |
2178 | QCUT_BUFFER4 = intern ("CUT_BUFFER4"); staticpro (&QCUT_BUFFER4); | |
2179 | QCUT_BUFFER5 = intern ("CUT_BUFFER5"); staticpro (&QCUT_BUFFER5); | |
2180 | QCUT_BUFFER6 = intern ("CUT_BUFFER6"); staticpro (&QCUT_BUFFER6); | |
2181 | QCUT_BUFFER7 = intern ("CUT_BUFFER7"); staticpro (&QCUT_BUFFER7); | |
2182 | #endif | |
2183 | ||
2184 | } |