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2408b3a1 | 1 | /* X Selection processing for Emacs. |
002bbc0e | 2 | Copyright (C) 1993, 1994, 1995, 1996 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 | 30 | |
ede4db72 RS |
31 | #define CUT_BUFFER_SUPPORT |
32 | ||
ede4db72 RS |
33 | Lisp_Object QPRIMARY, QSECONDARY, QSTRING, QINTEGER, QCLIPBOARD, QTIMESTAMP, |
34 | QTEXT, QDELETE, QMULTIPLE, QINCR, QEMACS_TMP, QTARGETS, QATOM, QNULL, | |
35 | QATOM_PAIR; | |
36 | ||
37 | #ifdef CUT_BUFFER_SUPPORT | |
38 | Lisp_Object QCUT_BUFFER0, QCUT_BUFFER1, QCUT_BUFFER2, QCUT_BUFFER3, | |
39 | QCUT_BUFFER4, QCUT_BUFFER5, QCUT_BUFFER6, QCUT_BUFFER7; | |
40 | #endif | |
41 | ||
8f4f023f RS |
42 | static Lisp_Object Vx_lost_selection_hooks; |
43 | static Lisp_Object Vx_sent_selection_hooks; | |
ede4db72 RS |
44 | |
45 | /* If this is a smaller number than the max-request-size of the display, | |
46 | emacs will use INCR selection transfer when the selection is larger | |
47 | than this. The max-request-size is usually around 64k, so if you want | |
48 | emacs to use incremental selection transfers when the selection is | |
49 | smaller than that, set this. I added this mostly for debugging the | |
8f4f023f | 50 | incremental transfer stuff, but it might improve server performance. */ |
ede4db72 RS |
51 | #define MAX_SELECTION_QUANTUM 0xFFFFFF |
52 | ||
c3498e64 JB |
53 | #ifdef HAVE_X11R4 |
54 | #define SELECTION_QUANTUM(dpy) ((XMaxRequestSize(dpy) << 2) - 100) | |
55 | #else | |
56 | #define SELECTION_QUANTUM(dpy) (((dpy)->max_request_size << 2) - 100) | |
57 | #endif | |
ede4db72 | 58 | |
7da64e5c RS |
59 | /* The timestamp of the last input event Emacs received from the X server. */ |
60 | unsigned long last_event_timestamp; | |
ede4db72 RS |
61 | |
62 | /* This is an association list whose elements are of the form | |
118bd841 RS |
63 | ( SELECTION-NAME SELECTION-VALUE SELECTION-TIMESTAMP FRAME) |
64 | SELECTION-NAME is a lisp symbol, whose name is the name of an X Atom. | |
65 | SELECTION-VALUE is the value that emacs owns for that selection. | |
ede4db72 | 66 | It may be any kind of Lisp object. |
118bd841 | 67 | SELECTION-TIMESTAMP is the time at which emacs began owning this selection, |
ede4db72 | 68 | as a cons of two 16-bit numbers (making a 32 bit time.) |
118bd841 RS |
69 | FRAME is the frame for which we made the selection. |
70 | If there is an entry in this alist, then it can be assumed that Emacs owns | |
ede4db72 RS |
71 | that selection. |
72 | The only (eq) parts of this list that are visible from Lisp are the | |
8f4f023f RS |
73 | selection-values. */ |
74 | static Lisp_Object Vselection_alist; | |
ede4db72 RS |
75 | |
76 | /* This is an alist whose CARs are selection-types (whose names are the same | |
77 | as the names of X Atoms) and whose CDRs are the names of Lisp functions to | |
78 | call to convert the given Emacs selection value to a string representing | |
79 | the given selection type. This is for Lisp-level extension of the emacs | |
8f4f023f RS |
80 | selection handling. */ |
81 | static Lisp_Object Vselection_converter_alist; | |
ede4db72 RS |
82 | |
83 | /* If the selection owner takes too long to reply to a selection request, | |
8f4f023f RS |
84 | we give up on it. This is in milliseconds (0 = no timeout.) */ |
85 | static int x_selection_timeout; | |
ede4db72 RS |
86 | \f |
87 | /* Utility functions */ | |
88 | ||
89 | static void lisp_data_to_selection_data (); | |
90 | static Lisp_Object selection_data_to_lisp_data (); | |
91 | static Lisp_Object x_get_window_property_as_lisp_data (); | |
92 | ||
ede4db72 RS |
93 | /* This converts a Lisp symbol to a server Atom, avoiding a server |
94 | roundtrip whenever possible. */ | |
95 | ||
96 | static Atom | |
5c3a351a RS |
97 | symbol_to_x_atom (dpyinfo, display, sym) |
98 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
99 | Display *display; |
100 | Lisp_Object sym; | |
101 | { | |
102 | Atom val; | |
103 | if (NILP (sym)) return 0; | |
104 | if (EQ (sym, QPRIMARY)) return XA_PRIMARY; | |
105 | if (EQ (sym, QSECONDARY)) return XA_SECONDARY; | |
106 | if (EQ (sym, QSTRING)) return XA_STRING; | |
107 | if (EQ (sym, QINTEGER)) return XA_INTEGER; | |
108 | if (EQ (sym, QATOM)) return XA_ATOM; | |
5c3a351a RS |
109 | if (EQ (sym, QCLIPBOARD)) return dpyinfo->Xatom_CLIPBOARD; |
110 | if (EQ (sym, QTIMESTAMP)) return dpyinfo->Xatom_TIMESTAMP; | |
111 | if (EQ (sym, QTEXT)) return dpyinfo->Xatom_TEXT; | |
112 | if (EQ (sym, QDELETE)) return dpyinfo->Xatom_DELETE; | |
113 | if (EQ (sym, QMULTIPLE)) return dpyinfo->Xatom_MULTIPLE; | |
114 | if (EQ (sym, QINCR)) return dpyinfo->Xatom_INCR; | |
115 | if (EQ (sym, QEMACS_TMP)) return dpyinfo->Xatom_EMACS_TMP; | |
116 | if (EQ (sym, QTARGETS)) return dpyinfo->Xatom_TARGETS; | |
117 | if (EQ (sym, QNULL)) return dpyinfo->Xatom_NULL; | |
ede4db72 RS |
118 | #ifdef CUT_BUFFER_SUPPORT |
119 | if (EQ (sym, QCUT_BUFFER0)) return XA_CUT_BUFFER0; | |
120 | if (EQ (sym, QCUT_BUFFER1)) return XA_CUT_BUFFER1; | |
121 | if (EQ (sym, QCUT_BUFFER2)) return XA_CUT_BUFFER2; | |
122 | if (EQ (sym, QCUT_BUFFER3)) return XA_CUT_BUFFER3; | |
123 | if (EQ (sym, QCUT_BUFFER4)) return XA_CUT_BUFFER4; | |
124 | if (EQ (sym, QCUT_BUFFER5)) return XA_CUT_BUFFER5; | |
125 | if (EQ (sym, QCUT_BUFFER6)) return XA_CUT_BUFFER6; | |
126 | if (EQ (sym, QCUT_BUFFER7)) return XA_CUT_BUFFER7; | |
127 | #endif | |
128 | if (!SYMBOLP (sym)) abort (); | |
129 | ||
130 | #if 0 | |
131 | fprintf (stderr, " XInternAtom %s\n", (char *) XSYMBOL (sym)->name->data); | |
132 | #endif | |
133 | BLOCK_INPUT; | |
134 | val = XInternAtom (display, (char *) XSYMBOL (sym)->name->data, False); | |
135 | UNBLOCK_INPUT; | |
136 | return val; | |
137 | } | |
138 | ||
139 | ||
140 | /* This converts a server Atom to a Lisp symbol, avoiding server roundtrips | |
141 | and calls to intern whenever possible. */ | |
142 | ||
143 | static Lisp_Object | |
5c3a351a RS |
144 | x_atom_to_symbol (dpyinfo, display, atom) |
145 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
146 | Display *display; |
147 | Atom atom; | |
148 | { | |
149 | char *str; | |
150 | Lisp_Object val; | |
151 | if (! atom) return Qnil; | |
7da64e5c RS |
152 | switch (atom) |
153 | { | |
154 | case XA_PRIMARY: | |
155 | return QPRIMARY; | |
156 | case XA_SECONDARY: | |
157 | return QSECONDARY; | |
158 | case XA_STRING: | |
159 | return QSTRING; | |
160 | case XA_INTEGER: | |
161 | return QINTEGER; | |
162 | case XA_ATOM: | |
163 | return QATOM; | |
ede4db72 | 164 | #ifdef CUT_BUFFER_SUPPORT |
7da64e5c RS |
165 | case XA_CUT_BUFFER0: |
166 | return QCUT_BUFFER0; | |
167 | case XA_CUT_BUFFER1: | |
168 | return QCUT_BUFFER1; | |
169 | case XA_CUT_BUFFER2: | |
170 | return QCUT_BUFFER2; | |
171 | case XA_CUT_BUFFER3: | |
172 | return QCUT_BUFFER3; | |
173 | case XA_CUT_BUFFER4: | |
174 | return QCUT_BUFFER4; | |
175 | case XA_CUT_BUFFER5: | |
176 | return QCUT_BUFFER5; | |
177 | case XA_CUT_BUFFER6: | |
178 | return QCUT_BUFFER6; | |
179 | case XA_CUT_BUFFER7: | |
180 | return QCUT_BUFFER7; | |
ede4db72 | 181 | #endif |
7da64e5c RS |
182 | } |
183 | ||
5c3a351a | 184 | if (atom == dpyinfo->Xatom_CLIPBOARD) |
7da64e5c | 185 | return QCLIPBOARD; |
5c3a351a | 186 | if (atom == dpyinfo->Xatom_TIMESTAMP) |
7da64e5c | 187 | return QTIMESTAMP; |
5c3a351a | 188 | if (atom == dpyinfo->Xatom_TEXT) |
7da64e5c | 189 | return QTEXT; |
5c3a351a | 190 | if (atom == dpyinfo->Xatom_DELETE) |
7da64e5c | 191 | return QDELETE; |
5c3a351a | 192 | if (atom == dpyinfo->Xatom_MULTIPLE) |
7da64e5c | 193 | return QMULTIPLE; |
5c3a351a | 194 | if (atom == dpyinfo->Xatom_INCR) |
7da64e5c | 195 | return QINCR; |
5c3a351a | 196 | if (atom == dpyinfo->Xatom_EMACS_TMP) |
7da64e5c | 197 | return QEMACS_TMP; |
5c3a351a | 198 | if (atom == dpyinfo->Xatom_TARGETS) |
7da64e5c | 199 | return QTARGETS; |
5c3a351a | 200 | if (atom == dpyinfo->Xatom_NULL) |
7da64e5c | 201 | return QNULL; |
ede4db72 RS |
202 | |
203 | BLOCK_INPUT; | |
204 | str = XGetAtomName (display, atom); | |
205 | UNBLOCK_INPUT; | |
206 | #if 0 | |
207 | fprintf (stderr, " XGetAtomName --> %s\n", str); | |
208 | #endif | |
209 | if (! str) return Qnil; | |
210 | val = intern (str); | |
211 | BLOCK_INPUT; | |
0158abbc | 212 | /* This was allocated by Xlib, so use XFree. */ |
ede4db72 RS |
213 | XFree (str); |
214 | UNBLOCK_INPUT; | |
215 | return val; | |
216 | } | |
8a89415e | 217 | \f |
ede4db72 RS |
218 | /* Do protocol to assert ourself as a selection owner. |
219 | Update the Vselection_alist so that we can reply to later requests for | |
220 | our selection. */ | |
221 | ||
222 | static void | |
223 | x_own_selection (selection_name, selection_value) | |
224 | Lisp_Object selection_name, selection_value; | |
225 | { | |
ede4db72 | 226 | Window selecting_window = FRAME_X_WINDOW (selected_frame); |
3834c318 | 227 | Display *display = FRAME_X_DISPLAY (selected_frame); |
7da64e5c | 228 | Time time = last_event_timestamp; |
ede4db72 | 229 | Atom selection_atom; |
5c3a351a | 230 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
ede4db72 RS |
231 | |
232 | CHECK_SYMBOL (selection_name, 0); | |
5c3a351a | 233 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection_name); |
ede4db72 RS |
234 | |
235 | BLOCK_INPUT; | |
a7b24d46 | 236 | x_catch_errors (display); |
ede4db72 | 237 | XSetSelectionOwner (display, selection_atom, selecting_window, time); |
a7b24d46 RS |
238 | x_check_errors (display, "Can't set selection: %s"); |
239 | x_uncatch_errors (display); | |
ede4db72 RS |
240 | UNBLOCK_INPUT; |
241 | ||
242 | /* Now update the local cache */ | |
243 | { | |
244 | Lisp_Object selection_time; | |
245 | Lisp_Object selection_data; | |
246 | Lisp_Object prev_value; | |
247 | ||
248 | selection_time = long_to_cons ((unsigned long) time); | |
249 | selection_data = Fcons (selection_name, | |
250 | Fcons (selection_value, | |
118bd841 RS |
251 | Fcons (selection_time, |
252 | Fcons (Fselected_frame (), Qnil)))); | |
ede4db72 RS |
253 | prev_value = assq_no_quit (selection_name, Vselection_alist); |
254 | ||
255 | Vselection_alist = Fcons (selection_data, Vselection_alist); | |
256 | ||
257 | /* If we already owned the selection, remove the old selection data. | |
258 | Perhaps we should destructively modify it instead. | |
259 | Don't use Fdelq as that may QUIT. */ | |
260 | if (!NILP (prev_value)) | |
261 | { | |
262 | Lisp_Object rest; /* we know it's not the CAR, so it's easy. */ | |
263 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
264 | if (EQ (prev_value, Fcar (XCONS (rest)->cdr))) | |
265 | { | |
266 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
267 | break; | |
268 | } | |
269 | } | |
270 | } | |
271 | } | |
272 | \f | |
273 | /* Given a selection-name and desired type, look up our local copy of | |
274 | the selection value and convert it to the type. | |
275 | The value is nil or a string. | |
276 | This function is used both for remote requests | |
7da64e5c | 277 | and for local x-get-selection-internal. |
ede4db72 RS |
278 | |
279 | This calls random Lisp code, and may signal or gc. */ | |
280 | ||
281 | static Lisp_Object | |
282 | x_get_local_selection (selection_symbol, target_type) | |
283 | Lisp_Object selection_symbol, target_type; | |
284 | { | |
285 | Lisp_Object local_value; | |
286 | Lisp_Object handler_fn, value, type, check; | |
287 | int count; | |
288 | ||
289 | local_value = assq_no_quit (selection_symbol, Vselection_alist); | |
290 | ||
291 | if (NILP (local_value)) return Qnil; | |
292 | ||
293 | /* TIMESTAMP and MULTIPLE are special cases 'cause that's easiest. */ | |
294 | if (EQ (target_type, QTIMESTAMP)) | |
295 | { | |
296 | handler_fn = Qnil; | |
297 | value = XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car; | |
298 | } | |
299 | #if 0 | |
300 | else if (EQ (target_type, QDELETE)) | |
301 | { | |
302 | handler_fn = Qnil; | |
303 | Fx_disown_selection_internal | |
304 | (selection_symbol, | |
305 | XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car); | |
306 | value = QNULL; | |
307 | } | |
308 | #endif | |
309 | ||
310 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
311 | else if (CONSP (target_type) | |
312 | && XCONS (target_type)->car == QMULTIPLE) | |
313 | { | |
9d2d1dd8 KH |
314 | Lisp_Object pairs; |
315 | int size; | |
ede4db72 | 316 | int i; |
9d2d1dd8 KH |
317 | pairs = XCONS (target_type)->cdr; |
318 | size = XVECTOR (pairs)->size; | |
ede4db72 RS |
319 | /* If the target is MULTIPLE, then target_type looks like |
320 | (MULTIPLE . [[SELECTION1 TARGET1] [SELECTION2 TARGET2] ... ]) | |
321 | We modify the second element of each pair in the vector and | |
322 | return it as [[SELECTION1 <value1>] [SELECTION2 <value2>] ... ] | |
323 | */ | |
324 | for (i = 0; i < size; i++) | |
325 | { | |
9d2d1dd8 KH |
326 | Lisp_Object pair; |
327 | pair = XVECTOR (pairs)->contents [i]; | |
ede4db72 RS |
328 | XVECTOR (pair)->contents [1] |
329 | = x_get_local_selection (XVECTOR (pair)->contents [0], | |
330 | XVECTOR (pair)->contents [1]); | |
331 | } | |
332 | return pairs; | |
333 | } | |
334 | #endif | |
335 | else | |
336 | { | |
337 | /* Don't allow a quit within the converter. | |
338 | When the user types C-g, he would be surprised | |
339 | if by luck it came during a converter. */ | |
340 | count = specpdl_ptr - specpdl; | |
341 | specbind (Qinhibit_quit, Qt); | |
342 | ||
343 | CHECK_SYMBOL (target_type, 0); | |
344 | handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist)); | |
1eb4d468 RS |
345 | if (!NILP (handler_fn)) |
346 | value = call3 (handler_fn, | |
347 | selection_symbol, target_type, | |
348 | XCONS (XCONS (local_value)->cdr)->car); | |
349 | else | |
350 | value = Qnil; | |
ede4db72 RS |
351 | unbind_to (count, Qnil); |
352 | } | |
353 | ||
354 | /* Make sure this value is of a type that we could transmit | |
355 | to another X client. */ | |
a87ed99c | 356 | |
ede4db72 RS |
357 | check = value; |
358 | if (CONSP (value) | |
359 | && SYMBOLP (XCONS (value)->car)) | |
360 | type = XCONS (value)->car, | |
361 | check = XCONS (value)->cdr; | |
362 | ||
363 | if (STRINGP (check) | |
364 | || VECTORP (check) | |
365 | || SYMBOLP (check) | |
7da64e5c | 366 | || INTEGERP (check) |
ede4db72 RS |
367 | || NILP (value)) |
368 | return value; | |
a87ed99c | 369 | /* Check for a value that cons_to_long could handle. */ |
ede4db72 | 370 | else if (CONSP (check) |
7da64e5c RS |
371 | && INTEGERP (XCONS (check)->car) |
372 | && (INTEGERP (XCONS (check)->cdr) | |
ede4db72 RS |
373 | || |
374 | (CONSP (XCONS (check)->cdr) | |
7da64e5c | 375 | && INTEGERP (XCONS (XCONS (check)->cdr)->car) |
ede4db72 RS |
376 | && NILP (XCONS (XCONS (check)->cdr)->cdr)))) |
377 | return value; | |
378 | else | |
379 | return | |
380 | Fsignal (Qerror, | |
a87ed99c | 381 | Fcons (build_string ("invalid data returned by selection-conversion function"), |
ede4db72 RS |
382 | Fcons (handler_fn, Fcons (value, Qnil)))); |
383 | } | |
384 | \f | |
385 | /* Subroutines of x_reply_selection_request. */ | |
386 | ||
5d0ba25b | 387 | /* Send a SelectionNotify event to the requestor with property=None, |
ede4db72 RS |
388 | meaning we were unable to do what they wanted. */ |
389 | ||
390 | static void | |
391 | x_decline_selection_request (event) | |
392 | struct input_event *event; | |
393 | { | |
394 | XSelectionEvent reply; | |
395 | reply.type = SelectionNotify; | |
396 | reply.display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 397 | reply.requestor = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
398 | reply.selection = SELECTION_EVENT_SELECTION (event); |
399 | reply.time = SELECTION_EVENT_TIME (event); | |
400 | reply.target = SELECTION_EVENT_TARGET (event); | |
401 | reply.property = None; | |
402 | ||
403 | BLOCK_INPUT; | |
5d0ba25b | 404 | XSendEvent (reply.display, reply.requestor, False, 0L, |
7ffb2841 | 405 | (XEvent *) &reply); |
5c3a351a | 406 | XFlush (reply.display); |
ede4db72 RS |
407 | UNBLOCK_INPUT; |
408 | } | |
409 | ||
410 | /* This is the selection request currently being processed. | |
411 | It is set to zero when the request is fully processed. */ | |
412 | static struct input_event *x_selection_current_request; | |
413 | ||
414 | /* Used as an unwind-protect clause so that, if a selection-converter signals | |
2a1a4c9d | 415 | an error, we tell the requester that we were unable to do what they wanted |
ede4db72 RS |
416 | before we throw to top-level or go into the debugger or whatever. */ |
417 | ||
418 | static Lisp_Object | |
419 | x_selection_request_lisp_error (ignore) | |
420 | Lisp_Object ignore; | |
421 | { | |
422 | if (x_selection_current_request != 0) | |
423 | x_decline_selection_request (x_selection_current_request); | |
424 | return Qnil; | |
425 | } | |
426 | \f | |
d1f21a66 RS |
427 | |
428 | /* This stuff is so that INCR selections are reentrant (that is, so we can | |
429 | be servicing multiple INCR selection requests simultaneously.) I haven't | |
430 | actually tested that yet. */ | |
431 | ||
432 | /* Keep a list of the property changes that are awaited. */ | |
433 | ||
434 | struct prop_location | |
435 | { | |
436 | int identifier; | |
437 | Display *display; | |
438 | Window window; | |
439 | Atom property; | |
440 | int desired_state; | |
441 | int arrived; | |
442 | struct prop_location *next; | |
443 | }; | |
444 | ||
445 | static struct prop_location *expect_property_change (); | |
446 | static void wait_for_property_change (); | |
447 | static void unexpect_property_change (); | |
448 | static int waiting_for_other_props_on_window (); | |
449 | ||
450 | static int prop_location_identifier; | |
451 | ||
452 | static Lisp_Object property_change_reply; | |
453 | ||
454 | static struct prop_location *property_change_reply_object; | |
455 | ||
456 | static struct prop_location *property_change_wait_list; | |
55b2d45d RS |
457 | |
458 | static Lisp_Object | |
459 | queue_selection_requests_unwind (frame) | |
460 | Lisp_Object frame; | |
461 | { | |
462 | FRAME_PTR f = XFRAME (frame); | |
463 | ||
464 | if (! NILP (frame)) | |
465 | x_stop_queuing_selection_requests (FRAME_X_DISPLAY (f)); | |
ab552306 | 466 | return Qnil; |
55b2d45d RS |
467 | } |
468 | ||
469 | /* Return some frame whose display info is DPYINFO. | |
470 | Return nil if there is none. */ | |
471 | ||
472 | static Lisp_Object | |
473 | some_frame_on_display (dpyinfo) | |
474 | struct x_display_info *dpyinfo; | |
475 | { | |
476 | Lisp_Object list, frame; | |
477 | ||
478 | FOR_EACH_FRAME (list, frame) | |
479 | { | |
480 | if (FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
481 | return frame; | |
482 | } | |
483 | ||
484 | return Qnil; | |
485 | } | |
d1f21a66 | 486 | \f |
ede4db72 RS |
487 | /* Send the reply to a selection request event EVENT. |
488 | TYPE is the type of selection data requested. | |
489 | DATA and SIZE describe the data to send, already converted. | |
490 | FORMAT is the unit-size (in bits) of the data to be transmitted. */ | |
491 | ||
492 | static void | |
493 | x_reply_selection_request (event, format, data, size, type) | |
494 | struct input_event *event; | |
495 | int format, size; | |
496 | unsigned char *data; | |
497 | Atom type; | |
498 | { | |
499 | XSelectionEvent reply; | |
500 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 501 | Window window = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
502 | int bytes_remaining; |
503 | int format_bytes = format/8; | |
504 | int max_bytes = SELECTION_QUANTUM (display); | |
5c3a351a | 505 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 RS |
506 | |
507 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
508 | max_bytes = MAX_SELECTION_QUANTUM; | |
509 | ||
510 | reply.type = SelectionNotify; | |
511 | reply.display = display; | |
5d0ba25b | 512 | reply.requestor = window; |
ede4db72 RS |
513 | reply.selection = SELECTION_EVENT_SELECTION (event); |
514 | reply.time = SELECTION_EVENT_TIME (event); | |
515 | reply.target = SELECTION_EVENT_TARGET (event); | |
516 | reply.property = SELECTION_EVENT_PROPERTY (event); | |
517 | if (reply.property == None) | |
518 | reply.property = reply.target; | |
519 | ||
520 | /* #### XChangeProperty can generate BadAlloc, and we must handle it! */ | |
afe1529d RS |
521 | BLOCK_INPUT; |
522 | x_catch_errors (display); | |
ede4db72 | 523 | |
ede4db72 RS |
524 | /* Store the data on the requested property. |
525 | If the selection is large, only store the first N bytes of it. | |
526 | */ | |
527 | bytes_remaining = size * format_bytes; | |
528 | if (bytes_remaining <= max_bytes) | |
529 | { | |
530 | /* Send all the data at once, with minimal handshaking. */ | |
531 | #if 0 | |
532 | fprintf (stderr,"\nStoring all %d\n", bytes_remaining); | |
533 | #endif | |
534 | XChangeProperty (display, window, reply.property, type, format, | |
535 | PropModeReplace, data, size); | |
536 | /* At this point, the selection was successfully stored; ack it. */ | |
2f65feb6 | 537 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
ede4db72 RS |
538 | } |
539 | else | |
540 | { | |
541 | /* Send an INCR selection. */ | |
d1f21a66 | 542 | struct prop_location *wait_object; |
afe1529d | 543 | int had_errors; |
55b2d45d RS |
544 | int count = specpdl_ptr - specpdl; |
545 | Lisp_Object frame; | |
ede4db72 | 546 | |
55b2d45d RS |
547 | frame = some_frame_on_display (dpyinfo); |
548 | ||
549 | /* If the display no longer has frames, we can't expect | |
550 | to get many more selection requests from it, so don't | |
551 | bother trying to queue them. */ | |
552 | if (!NILP (frame)) | |
553 | { | |
554 | x_start_queuing_selection_requests (display); | |
555 | ||
556 | record_unwind_protect (queue_selection_requests_unwind, | |
557 | frame); | |
558 | } | |
2f65feb6 | 559 | |
19126e11 | 560 | if (x_window_to_frame (dpyinfo, window)) /* #### debug */ |
606140dd | 561 | error ("Attempt to transfer an INCR to ourself!"); |
ede4db72 RS |
562 | #if 0 |
563 | fprintf (stderr, "\nINCR %d\n", bytes_remaining); | |
564 | #endif | |
d1f21a66 RS |
565 | wait_object = expect_property_change (display, window, reply.property, |
566 | PropertyDelete); | |
ede4db72 | 567 | |
5c3a351a | 568 | XChangeProperty (display, window, reply.property, dpyinfo->Xatom_INCR, |
55b2d45d RS |
569 | 32, PropModeReplace, |
570 | (unsigned char *) &bytes_remaining, 1); | |
ede4db72 RS |
571 | XSelectInput (display, window, PropertyChangeMask); |
572 | /* Tell 'em the INCR data is there... */ | |
55b2d45d | 573 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
5c3a351a | 574 | XFlush (display); |
afe1529d RS |
575 | |
576 | had_errors = x_had_errors_p (display); | |
2f65feb6 | 577 | UNBLOCK_INPUT; |
ede4db72 | 578 | |
2a1a4c9d | 579 | /* First, wait for the requester to ack by deleting the property. |
ede4db72 | 580 | This can run random lisp code (process handlers) or signal. */ |
afe1529d RS |
581 | if (! had_errors) |
582 | wait_for_property_change (wait_object); | |
ede4db72 RS |
583 | |
584 | while (bytes_remaining) | |
585 | { | |
586 | int i = ((bytes_remaining < max_bytes) | |
587 | ? bytes_remaining | |
588 | : max_bytes); | |
2f65feb6 RS |
589 | |
590 | BLOCK_INPUT; | |
591 | ||
d1f21a66 RS |
592 | wait_object |
593 | = expect_property_change (display, window, reply.property, | |
594 | PropertyDelete); | |
ede4db72 RS |
595 | #if 0 |
596 | fprintf (stderr," INCR adding %d\n", i); | |
597 | #endif | |
598 | /* Append the next chunk of data to the property. */ | |
599 | XChangeProperty (display, window, reply.property, type, format, | |
600 | PropModeAppend, data, i / format_bytes); | |
601 | bytes_remaining -= i; | |
602 | data += i; | |
5c3a351a | 603 | XFlush (display); |
afe1529d | 604 | had_errors = x_had_errors_p (display); |
2f65feb6 | 605 | UNBLOCK_INPUT; |
ede4db72 | 606 | |
afe1529d RS |
607 | if (had_errors) |
608 | break; | |
609 | ||
2a1a4c9d | 610 | /* Now wait for the requester to ack this chunk by deleting the |
ede4db72 RS |
611 | property. This can run random lisp code or signal. |
612 | */ | |
d1f21a66 | 613 | wait_for_property_change (wait_object); |
ede4db72 | 614 | } |
2a1a4c9d | 615 | /* Now write a zero-length chunk to the property to tell the requester |
ede4db72 RS |
616 | that we're done. */ |
617 | #if 0 | |
618 | fprintf (stderr," INCR done\n"); | |
619 | #endif | |
2f65feb6 | 620 | BLOCK_INPUT; |
ede4db72 RS |
621 | if (! waiting_for_other_props_on_window (display, window)) |
622 | XSelectInput (display, window, 0L); | |
623 | ||
624 | XChangeProperty (display, window, reply.property, type, format, | |
625 | PropModeReplace, data, 0); | |
55b2d45d RS |
626 | |
627 | unbind_to (count, Qnil); | |
ede4db72 | 628 | } |
afe1529d RS |
629 | |
630 | XFlush (display); | |
631 | x_uncatch_errors (display); | |
632 | UNBLOCK_INPUT; | |
ede4db72 RS |
633 | } |
634 | \f | |
635 | /* Handle a SelectionRequest event EVENT. | |
636 | This is called from keyboard.c when such an event is found in the queue. */ | |
637 | ||
638 | void | |
639 | x_handle_selection_request (event) | |
640 | struct input_event *event; | |
641 | { | |
642 | struct gcpro gcpro1, gcpro2, gcpro3; | |
9d2d1dd8 | 643 | Lisp_Object local_selection_data; |
ede4db72 | 644 | Lisp_Object selection_symbol; |
9d2d1dd8 KH |
645 | Lisp_Object target_symbol; |
646 | Lisp_Object converted_selection; | |
ede4db72 | 647 | Time local_selection_time; |
9d2d1dd8 | 648 | Lisp_Object successful_p; |
ede4db72 | 649 | int count; |
5c3a351a RS |
650 | struct x_display_info *dpyinfo |
651 | = x_display_info_for_display (SELECTION_EVENT_DISPLAY (event)); | |
ede4db72 | 652 | |
9d2d1dd8 KH |
653 | local_selection_data = Qnil; |
654 | target_symbol = Qnil; | |
655 | converted_selection = Qnil; | |
656 | successful_p = Qnil; | |
657 | ||
ede4db72 RS |
658 | GCPRO3 (local_selection_data, converted_selection, target_symbol); |
659 | ||
5c3a351a RS |
660 | selection_symbol = x_atom_to_symbol (dpyinfo, |
661 | SELECTION_EVENT_DISPLAY (event), | |
ede4db72 RS |
662 | SELECTION_EVENT_SELECTION (event)); |
663 | ||
664 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
ede4db72 RS |
665 | |
666 | if (NILP (local_selection_data)) | |
667 | { | |
668 | /* Someone asked for the selection, but we don't have it any more. | |
669 | */ | |
670 | x_decline_selection_request (event); | |
671 | goto DONE; | |
672 | } | |
673 | ||
674 | local_selection_time = (Time) | |
675 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
676 | ||
677 | if (SELECTION_EVENT_TIME (event) != CurrentTime | |
7da64e5c | 678 | && local_selection_time > SELECTION_EVENT_TIME (event)) |
ede4db72 RS |
679 | { |
680 | /* Someone asked for the selection, and we have one, but not the one | |
681 | they're looking for. | |
682 | */ | |
683 | x_decline_selection_request (event); | |
684 | goto DONE; | |
685 | } | |
686 | ||
687 | count = specpdl_ptr - specpdl; | |
688 | x_selection_current_request = event; | |
689 | record_unwind_protect (x_selection_request_lisp_error, Qnil); | |
690 | ||
5c3a351a | 691 | target_symbol = x_atom_to_symbol (dpyinfo, SELECTION_EVENT_DISPLAY (event), |
ede4db72 RS |
692 | SELECTION_EVENT_TARGET (event)); |
693 | ||
694 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
695 | if (EQ (target_symbol, QMULTIPLE)) | |
696 | target_symbol = fetch_multiple_target (event); | |
697 | #endif | |
698 | ||
699 | /* Convert lisp objects back into binary data */ | |
700 | ||
701 | converted_selection | |
702 | = x_get_local_selection (selection_symbol, target_symbol); | |
703 | ||
704 | if (! NILP (converted_selection)) | |
705 | { | |
706 | unsigned char *data; | |
707 | unsigned int size; | |
708 | int format; | |
709 | Atom type; | |
aca39f42 RS |
710 | int nofree; |
711 | ||
2f65feb6 RS |
712 | lisp_data_to_selection_data (SELECTION_EVENT_DISPLAY (event), |
713 | converted_selection, | |
aca39f42 | 714 | &data, &type, &size, &format, &nofree); |
ede4db72 RS |
715 | |
716 | x_reply_selection_request (event, format, data, size, type); | |
717 | successful_p = Qt; | |
718 | ||
719 | /* Indicate we have successfully processed this event. */ | |
7da64e5c | 720 | x_selection_current_request = 0; |
ede4db72 | 721 | |
002bbc0e | 722 | /* Use free, not XFree, because lisp_data_to_selection_data |
0158abbc | 723 | calls xmalloc itself. */ |
aca39f42 | 724 | if (!nofree) |
002bbc0e | 725 | free (data); |
ede4db72 RS |
726 | } |
727 | unbind_to (count, Qnil); | |
728 | ||
729 | DONE: | |
730 | ||
731 | UNGCPRO; | |
732 | ||
733 | /* Let random lisp code notice that the selection has been asked for. */ | |
734 | { | |
9d2d1dd8 KH |
735 | Lisp_Object rest; |
736 | rest = Vx_sent_selection_hooks; | |
ede4db72 RS |
737 | if (!EQ (rest, Qunbound)) |
738 | for (; CONSP (rest); rest = Fcdr (rest)) | |
739 | call3 (Fcar (rest), selection_symbol, target_symbol, successful_p); | |
740 | } | |
741 | } | |
742 | \f | |
743 | /* Handle a SelectionClear event EVENT, which indicates that some other | |
744 | client cleared out our previously asserted selection. | |
745 | This is called from keyboard.c when such an event is found in the queue. */ | |
746 | ||
747 | void | |
748 | x_handle_selection_clear (event) | |
749 | struct input_event *event; | |
750 | { | |
751 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
752 | Atom selection = SELECTION_EVENT_SELECTION (event); | |
753 | Time changed_owner_time = SELECTION_EVENT_TIME (event); | |
754 | ||
755 | Lisp_Object selection_symbol, local_selection_data; | |
756 | Time local_selection_time; | |
5c3a351a | 757 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 758 | |
5c3a351a | 759 | selection_symbol = x_atom_to_symbol (dpyinfo, display, selection); |
ede4db72 RS |
760 | |
761 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
762 | ||
763 | /* Well, we already believe that we don't own it, so that's just fine. */ | |
764 | if (NILP (local_selection_data)) return; | |
765 | ||
766 | local_selection_time = (Time) | |
767 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
768 | ||
769 | /* This SelectionClear is for a selection that we no longer own, so we can | |
770 | disregard it. (That is, we have reasserted the selection since this | |
771 | request was generated.) */ | |
772 | ||
773 | if (changed_owner_time != CurrentTime | |
774 | && local_selection_time > changed_owner_time) | |
775 | return; | |
776 | ||
777 | /* Otherwise, we're really honest and truly being told to drop it. | |
778 | Don't use Fdelq as that may QUIT;. */ | |
779 | ||
780 | if (EQ (local_selection_data, Fcar (Vselection_alist))) | |
781 | Vselection_alist = Fcdr (Vselection_alist); | |
782 | else | |
783 | { | |
784 | Lisp_Object rest; | |
785 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
786 | if (EQ (local_selection_data, Fcar (XCONS (rest)->cdr))) | |
787 | { | |
788 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
789 | break; | |
790 | } | |
791 | } | |
792 | ||
793 | /* Let random lisp code notice that the selection has been stolen. */ | |
794 | ||
795 | { | |
d1f21a66 RS |
796 | Lisp_Object rest; |
797 | rest = Vx_lost_selection_hooks; | |
ede4db72 | 798 | if (!EQ (rest, Qunbound)) |
d1f21a66 RS |
799 | { |
800 | for (; CONSP (rest); rest = Fcdr (rest)) | |
801 | call1 (Fcar (rest), selection_symbol); | |
7c6b2ea4 | 802 | prepare_menu_bars (); |
d1f21a66 RS |
803 | redisplay_preserve_echo_area (); |
804 | } | |
ede4db72 RS |
805 | } |
806 | } | |
807 | ||
118bd841 RS |
808 | /* Clear all selections that were made from frame F. |
809 | We do this when about to delete a frame. */ | |
810 | ||
811 | void | |
812 | x_clear_frame_selections (f) | |
813 | FRAME_PTR f; | |
814 | { | |
815 | Lisp_Object frame; | |
816 | Lisp_Object rest; | |
817 | ||
90851bbe | 818 | XSETFRAME (frame, f); |
118bd841 RS |
819 | |
820 | /* Otherwise, we're really honest and truly being told to drop it. | |
821 | Don't use Fdelq as that may QUIT;. */ | |
822 | ||
0d199f9c RS |
823 | /* Delete elements from the beginning of Vselection_alist. */ |
824 | while (!NILP (Vselection_alist) | |
825 | && EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (Vselection_alist))))))) | |
826 | { | |
827 | /* Let random Lisp code notice that the selection has been stolen. */ | |
828 | Lisp_Object hooks, selection_symbol; | |
829 | ||
830 | hooks = Vx_lost_selection_hooks; | |
831 | selection_symbol = Fcar (Fcar (Vselection_alist)); | |
832 | ||
833 | if (!EQ (hooks, Qunbound)) | |
834 | { | |
835 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
836 | call1 (Fcar (hooks), selection_symbol); | |
996b804d MB |
837 | #if 0 /* This can crash when deleting a frame |
838 | from x_connection_closed. Anyway, it seems unnecessary; | |
839 | something else should cause a redisplay. */ | |
0d199f9c | 840 | redisplay_preserve_echo_area (); |
996b804d | 841 | #endif |
0d199f9c RS |
842 | } |
843 | ||
844 | Vselection_alist = Fcdr (Vselection_alist); | |
845 | } | |
846 | ||
847 | /* Delete elements after the beginning of Vselection_alist. */ | |
118bd841 RS |
848 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) |
849 | if (EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (XCONS (rest)->cdr))))))) | |
850 | { | |
851 | /* Let random Lisp code notice that the selection has been stolen. */ | |
852 | Lisp_Object hooks, selection_symbol; | |
853 | ||
854 | hooks = Vx_lost_selection_hooks; | |
0d199f9c | 855 | selection_symbol = Fcar (Fcar (XCONS (rest)->cdr)); |
118bd841 RS |
856 | |
857 | if (!EQ (hooks, Qunbound)) | |
858 | { | |
859 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
860 | call1 (Fcar (hooks), selection_symbol); | |
996b804d | 861 | #if 0 /* See above */ |
118bd841 | 862 | redisplay_preserve_echo_area (); |
996b804d | 863 | #endif |
118bd841 RS |
864 | } |
865 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
866 | break; | |
867 | } | |
868 | } | |
ede4db72 | 869 | \f |
ede4db72 RS |
870 | /* Nonzero if any properties for DISPLAY and WINDOW |
871 | are on the list of what we are waiting for. */ | |
872 | ||
873 | static int | |
874 | waiting_for_other_props_on_window (display, window) | |
875 | Display *display; | |
876 | Window window; | |
877 | { | |
878 | struct prop_location *rest = property_change_wait_list; | |
879 | while (rest) | |
880 | if (rest->display == display && rest->window == window) | |
881 | return 1; | |
882 | else | |
883 | rest = rest->next; | |
884 | return 0; | |
885 | } | |
886 | ||
887 | /* Add an entry to the list of property changes we are waiting for. | |
888 | DISPLAY, WINDOW, PROPERTY, STATE describe what we will wait for. | |
889 | The return value is a number that uniquely identifies | |
890 | this awaited property change. */ | |
891 | ||
d1f21a66 | 892 | static struct prop_location * |
ede4db72 RS |
893 | expect_property_change (display, window, property, state) |
894 | Display *display; | |
895 | Window window; | |
896 | Lisp_Object property; | |
897 | int state; | |
898 | { | |
899 | struct prop_location *pl | |
900 | = (struct prop_location *) xmalloc (sizeof (struct prop_location)); | |
2f65feb6 | 901 | pl->identifier = ++prop_location_identifier; |
ede4db72 RS |
902 | pl->display = display; |
903 | pl->window = window; | |
904 | pl->property = property; | |
905 | pl->desired_state = state; | |
906 | pl->next = property_change_wait_list; | |
d1f21a66 | 907 | pl->arrived = 0; |
ede4db72 | 908 | property_change_wait_list = pl; |
d1f21a66 | 909 | return pl; |
ede4db72 RS |
910 | } |
911 | ||
912 | /* Delete an entry from the list of property changes we are waiting for. | |
2f65feb6 | 913 | IDENTIFIER is the number that uniquely identifies the entry. */ |
ede4db72 RS |
914 | |
915 | static void | |
d1f21a66 RS |
916 | unexpect_property_change (location) |
917 | struct prop_location *location; | |
ede4db72 RS |
918 | { |
919 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
920 | while (rest) | |
921 | { | |
d1f21a66 | 922 | if (rest == location) |
ede4db72 RS |
923 | { |
924 | if (prev) | |
925 | prev->next = rest->next; | |
926 | else | |
927 | property_change_wait_list = rest->next; | |
002bbc0e | 928 | free (rest); |
ede4db72 RS |
929 | return; |
930 | } | |
931 | prev = rest; | |
932 | rest = rest->next; | |
933 | } | |
934 | } | |
935 | ||
2f65feb6 RS |
936 | /* Remove the property change expectation element for IDENTIFIER. */ |
937 | ||
938 | static Lisp_Object | |
939 | wait_for_property_change_unwind (identifierval) | |
940 | Lisp_Object identifierval; | |
941 | { | |
c4898489 KH |
942 | unexpect_property_change ((struct prop_location *) |
943 | (XFASTINT (XCONS (identifierval)->car) << 16 | |
944 | | XFASTINT (XCONS (identifierval)->cdr))); | |
ab552306 | 945 | return Qnil; |
2f65feb6 RS |
946 | } |
947 | ||
ede4db72 | 948 | /* Actually wait for a property change. |
2f65feb6 | 949 | IDENTIFIER should be the value that expect_property_change returned. */ |
ede4db72 RS |
950 | |
951 | static void | |
d1f21a66 RS |
952 | wait_for_property_change (location) |
953 | struct prop_location *location; | |
ede4db72 | 954 | { |
2f65feb6 RS |
955 | int secs, usecs; |
956 | int count = specpdl_ptr - specpdl; | |
d1f21a66 RS |
957 | Lisp_Object tem; |
958 | ||
c4898489 KH |
959 | tem = Fcons (Qnil, Qnil); |
960 | XSETFASTINT (XCONS (tem)->car, (EMACS_UINT)location >> 16); | |
961 | XSETFASTINT (XCONS (tem)->cdr, (EMACS_UINT)location & 0xffff); | |
2f65feb6 RS |
962 | |
963 | /* Make sure to do unexpect_property_change if we quit or err. */ | |
d1f21a66 | 964 | record_unwind_protect (wait_for_property_change_unwind, tem); |
2f65feb6 | 965 | |
ede4db72 | 966 | XCONS (property_change_reply)->car = Qnil; |
2f65feb6 | 967 | |
afe1529d RS |
968 | property_change_reply_object = location; |
969 | /* If the event we are waiting for arrives beyond here, it will set | |
970 | property_change_reply, because property_change_reply_object says so. */ | |
d1f21a66 RS |
971 | if (! location->arrived) |
972 | { | |
d1f21a66 RS |
973 | secs = x_selection_timeout / 1000; |
974 | usecs = (x_selection_timeout % 1000) * 1000; | |
975 | wait_reading_process_input (secs, usecs, property_change_reply, 0); | |
976 | ||
977 | if (NILP (XCONS (property_change_reply)->car)) | |
606140dd | 978 | error ("Timed out waiting for property-notify event"); |
d1f21a66 | 979 | } |
2f65feb6 RS |
980 | |
981 | unbind_to (count, Qnil); | |
ede4db72 RS |
982 | } |
983 | ||
984 | /* Called from XTread_socket in response to a PropertyNotify event. */ | |
985 | ||
986 | void | |
987 | x_handle_property_notify (event) | |
988 | XPropertyEvent *event; | |
989 | { | |
990 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
991 | while (rest) | |
992 | { | |
993 | if (rest->property == event->atom | |
994 | && rest->window == event->window | |
995 | && rest->display == event->display | |
996 | && rest->desired_state == event->state) | |
997 | { | |
998 | #if 0 | |
999 | fprintf (stderr, "Saw expected prop-%s on %s\n", | |
1000 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a | 1001 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, event->display, |
ede4db72 RS |
1002 | event->atom)) |
1003 | ->name->data); | |
1004 | #endif | |
1005 | ||
d1f21a66 RS |
1006 | rest->arrived = 1; |
1007 | ||
ede4db72 RS |
1008 | /* If this is the one wait_for_property_change is waiting for, |
1009 | tell it to wake up. */ | |
d1f21a66 | 1010 | if (rest == property_change_reply_object) |
ede4db72 RS |
1011 | XCONS (property_change_reply)->car = Qt; |
1012 | ||
1013 | if (prev) | |
1014 | prev->next = rest->next; | |
1015 | else | |
1016 | property_change_wait_list = rest->next; | |
002bbc0e | 1017 | free (rest); |
ede4db72 RS |
1018 | return; |
1019 | } | |
1020 | prev = rest; | |
1021 | rest = rest->next; | |
1022 | } | |
1023 | #if 0 | |
1024 | fprintf (stderr, "Saw UNexpected prop-%s on %s\n", | |
1025 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a RS |
1026 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, |
1027 | event->display, event->atom)) | |
ede4db72 RS |
1028 | ->name->data); |
1029 | #endif | |
1030 | } | |
1031 | ||
1032 | ||
1033 | \f | |
1034 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1035 | ||
1036 | static Lisp_Object | |
1037 | fetch_multiple_target (event) | |
1038 | XSelectionRequestEvent *event; | |
1039 | { | |
1040 | Display *display = event->display; | |
5d0ba25b | 1041 | Window window = event->requestor; |
ede4db72 RS |
1042 | Atom target = event->target; |
1043 | Atom selection_atom = event->selection; | |
1044 | int result; | |
1045 | ||
1046 | return | |
1047 | Fcons (QMULTIPLE, | |
1048 | x_get_window_property_as_lisp_data (display, window, target, | |
1049 | QMULTIPLE, selection_atom)); | |
1050 | } | |
1051 | ||
1052 | static Lisp_Object | |
1053 | copy_multiple_data (obj) | |
1054 | Lisp_Object obj; | |
1055 | { | |
1056 | Lisp_Object vec; | |
1057 | int i; | |
1058 | int size; | |
1059 | if (CONSP (obj)) | |
1060 | return Fcons (XCONS (obj)->car, copy_multiple_data (XCONS (obj)->cdr)); | |
1061 | ||
1062 | CHECK_VECTOR (obj, 0); | |
1063 | vec = Fmake_vector (size = XVECTOR (obj)->size, Qnil); | |
1064 | for (i = 0; i < size; i++) | |
1065 | { | |
1066 | Lisp_Object vec2 = XVECTOR (obj)->contents [i]; | |
1067 | CHECK_VECTOR (vec2, 0); | |
1068 | if (XVECTOR (vec2)->size != 2) | |
1069 | /* ??? Confusing error message */ | |
1070 | Fsignal (Qerror, Fcons (build_string ("vectors must be of length 2"), | |
1071 | Fcons (vec2, Qnil))); | |
1072 | XVECTOR (vec)->contents [i] = Fmake_vector (2, Qnil); | |
1073 | XVECTOR (XVECTOR (vec)->contents [i])->contents [0] | |
1074 | = XVECTOR (vec2)->contents [0]; | |
1075 | XVECTOR (XVECTOR (vec)->contents [i])->contents [1] | |
1076 | = XVECTOR (vec2)->contents [1]; | |
1077 | } | |
1078 | return vec; | |
1079 | } | |
1080 | ||
1081 | #endif | |
1082 | ||
1083 | \f | |
1084 | /* Variables for communication with x_handle_selection_notify. */ | |
1085 | static Atom reading_which_selection; | |
1086 | static Lisp_Object reading_selection_reply; | |
1087 | static Window reading_selection_window; | |
1088 | ||
1089 | /* Do protocol to read selection-data from the server. | |
1090 | Converts this to Lisp data and returns it. */ | |
1091 | ||
1092 | static Lisp_Object | |
1093 | x_get_foreign_selection (selection_symbol, target_type) | |
1094 | Lisp_Object selection_symbol, target_type; | |
1095 | { | |
5d0ba25b | 1096 | Window requestor_window = FRAME_X_WINDOW (selected_frame); |
3834c318 | 1097 | Display *display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1098 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
5d0ba25b | 1099 | Time requestor_time = last_event_timestamp; |
5c3a351a RS |
1100 | Atom target_property = dpyinfo->Xatom_EMACS_TMP; |
1101 | Atom selection_atom = symbol_to_x_atom (dpyinfo, display, selection_symbol); | |
ede4db72 | 1102 | Atom type_atom; |
80da0190 | 1103 | int secs, usecs; |
55b2d45d RS |
1104 | int count = specpdl_ptr - specpdl; |
1105 | Lisp_Object frame; | |
ede4db72 RS |
1106 | |
1107 | if (CONSP (target_type)) | |
5c3a351a | 1108 | type_atom = symbol_to_x_atom (dpyinfo, display, XCONS (target_type)->car); |
ede4db72 | 1109 | else |
5c3a351a | 1110 | type_atom = symbol_to_x_atom (dpyinfo, display, target_type); |
ede4db72 RS |
1111 | |
1112 | BLOCK_INPUT; | |
a7b24d46 | 1113 | x_catch_errors (display); |
ede4db72 | 1114 | XConvertSelection (display, selection_atom, type_atom, target_property, |
5d0ba25b | 1115 | requestor_window, requestor_time); |
5c3a351a | 1116 | XFlush (display); |
ede4db72 RS |
1117 | |
1118 | /* Prepare to block until the reply has been read. */ | |
5d0ba25b | 1119 | reading_selection_window = requestor_window; |
ede4db72 RS |
1120 | reading_which_selection = selection_atom; |
1121 | XCONS (reading_selection_reply)->car = Qnil; | |
55b2d45d RS |
1122 | |
1123 | frame = some_frame_on_display (dpyinfo); | |
1124 | ||
1125 | /* If the display no longer has frames, we can't expect | |
1126 | to get many more selection requests from it, so don't | |
1127 | bother trying to queue them. */ | |
1128 | if (!NILP (frame)) | |
1129 | { | |
1130 | x_start_queuing_selection_requests (display); | |
1131 | ||
1132 | record_unwind_protect (queue_selection_requests_unwind, | |
1133 | frame); | |
1134 | } | |
ede4db72 RS |
1135 | UNBLOCK_INPUT; |
1136 | ||
80da0190 RS |
1137 | /* This allows quits. Also, don't wait forever. */ |
1138 | secs = x_selection_timeout / 1000; | |
1139 | usecs = (x_selection_timeout % 1000) * 1000; | |
1140 | wait_reading_process_input (secs, usecs, reading_selection_reply, 0); | |
ede4db72 | 1141 | |
7c6b2ea4 | 1142 | BLOCK_INPUT; |
a7b24d46 RS |
1143 | x_check_errors (display, "Cannot get selection: %s"); |
1144 | x_uncatch_errors (display); | |
55b2d45d | 1145 | unbind_to (count, Qnil); |
7c6b2ea4 RS |
1146 | UNBLOCK_INPUT; |
1147 | ||
ede4db72 | 1148 | if (NILP (XCONS (reading_selection_reply)->car)) |
606140dd KH |
1149 | error ("Timed out waiting for reply from selection owner"); |
1150 | if (EQ (XCONS (reading_selection_reply)->car, Qlambda)) | |
1151 | error ("No `%s' selection", XSYMBOL (selection_symbol)->name->data); | |
ede4db72 RS |
1152 | |
1153 | /* Otherwise, the selection is waiting for us on the requested property. */ | |
1154 | return | |
5d0ba25b | 1155 | x_get_window_property_as_lisp_data (display, requestor_window, |
ede4db72 RS |
1156 | target_property, target_type, |
1157 | selection_atom); | |
1158 | } | |
1159 | \f | |
1160 | /* Subroutines of x_get_window_property_as_lisp_data */ | |
1161 | ||
002bbc0e | 1162 | /* Use free, not XFree, to free the data obtained with this function. */ |
0158abbc | 1163 | |
ede4db72 RS |
1164 | static void |
1165 | x_get_window_property (display, window, property, data_ret, bytes_ret, | |
1166 | actual_type_ret, actual_format_ret, actual_size_ret, | |
1167 | delete_p) | |
1168 | Display *display; | |
1169 | Window window; | |
1170 | Atom property; | |
1171 | unsigned char **data_ret; | |
1172 | int *bytes_ret; | |
1173 | Atom *actual_type_ret; | |
1174 | int *actual_format_ret; | |
1175 | unsigned long *actual_size_ret; | |
1176 | int delete_p; | |
1177 | { | |
1178 | int total_size; | |
1179 | unsigned long bytes_remaining; | |
1180 | int offset = 0; | |
1181 | unsigned char *tmp_data = 0; | |
1182 | int result; | |
1183 | int buffer_size = SELECTION_QUANTUM (display); | |
1184 | if (buffer_size > MAX_SELECTION_QUANTUM) buffer_size = MAX_SELECTION_QUANTUM; | |
1185 | ||
1186 | BLOCK_INPUT; | |
1187 | /* First probe the thing to find out how big it is. */ | |
1188 | result = XGetWindowProperty (display, window, property, | |
137edb72 | 1189 | 0L, 0L, False, AnyPropertyType, |
ede4db72 RS |
1190 | actual_type_ret, actual_format_ret, |
1191 | actual_size_ret, | |
1192 | &bytes_remaining, &tmp_data); | |
ede4db72 RS |
1193 | if (result != Success) |
1194 | { | |
2f65feb6 | 1195 | UNBLOCK_INPUT; |
ede4db72 RS |
1196 | *data_ret = 0; |
1197 | *bytes_ret = 0; | |
1198 | return; | |
1199 | } | |
0158abbc RS |
1200 | /* This was allocated by Xlib, so use XFree. */ |
1201 | XFree ((char *) tmp_data); | |
ede4db72 RS |
1202 | |
1203 | if (*actual_type_ret == None || *actual_format_ret == 0) | |
1204 | { | |
2f65feb6 | 1205 | UNBLOCK_INPUT; |
ede4db72 RS |
1206 | return; |
1207 | } | |
1208 | ||
1209 | total_size = bytes_remaining + 1; | |
1210 | *data_ret = (unsigned char *) xmalloc (total_size); | |
1211 | ||
2a1a4c9d | 1212 | /* Now read, until we've gotten it all. */ |
ede4db72 RS |
1213 | while (bytes_remaining) |
1214 | { | |
1215 | #if 0 | |
1216 | int last = bytes_remaining; | |
1217 | #endif | |
1218 | result | |
1219 | = XGetWindowProperty (display, window, property, | |
137edb72 | 1220 | (long)offset/4, (long)buffer_size/4, |
2f65feb6 | 1221 | False, |
ede4db72 RS |
1222 | AnyPropertyType, |
1223 | actual_type_ret, actual_format_ret, | |
1224 | actual_size_ret, &bytes_remaining, &tmp_data); | |
1225 | #if 0 | |
1226 | fprintf (stderr, "<< read %d\n", last-bytes_remaining); | |
1227 | #endif | |
1228 | /* If this doesn't return Success at this point, it means that | |
1229 | some clod deleted the selection while we were in the midst of | |
1230 | reading it. Deal with that, I guess.... | |
1231 | */ | |
1232 | if (result != Success) break; | |
1233 | *actual_size_ret *= *actual_format_ret / 8; | |
1234 | bcopy (tmp_data, (*data_ret) + offset, *actual_size_ret); | |
1235 | offset += *actual_size_ret; | |
0158abbc RS |
1236 | /* This was allocated by Xlib, so use XFree. */ |
1237 | XFree ((char *) tmp_data); | |
ede4db72 | 1238 | } |
2f65feb6 | 1239 | |
5c3a351a | 1240 | XFlush (display); |
ede4db72 RS |
1241 | UNBLOCK_INPUT; |
1242 | *bytes_ret = offset; | |
1243 | } | |
1244 | \f | |
002bbc0e | 1245 | /* Use free, not XFree, to free the data obtained with this function. */ |
0158abbc | 1246 | |
ede4db72 RS |
1247 | static void |
1248 | receive_incremental_selection (display, window, property, target_type, | |
1249 | min_size_bytes, data_ret, size_bytes_ret, | |
1250 | type_ret, format_ret, size_ret) | |
1251 | Display *display; | |
1252 | Window window; | |
1253 | Atom property; | |
1254 | Lisp_Object target_type; /* for error messages only */ | |
1255 | unsigned int min_size_bytes; | |
1256 | unsigned char **data_ret; | |
1257 | int *size_bytes_ret; | |
1258 | Atom *type_ret; | |
1259 | unsigned long *size_ret; | |
1260 | int *format_ret; | |
1261 | { | |
1262 | int offset = 0; | |
d1f21a66 | 1263 | struct prop_location *wait_object; |
ede4db72 RS |
1264 | *size_bytes_ret = min_size_bytes; |
1265 | *data_ret = (unsigned char *) xmalloc (*size_bytes_ret); | |
1266 | #if 0 | |
1267 | fprintf (stderr, "\nread INCR %d\n", min_size_bytes); | |
1268 | #endif | |
2f65feb6 RS |
1269 | |
1270 | /* At this point, we have read an INCR property. | |
1271 | Delete the property to ack it. | |
1272 | (But first, prepare to receive the next event in this handshake.) | |
ede4db72 RS |
1273 | |
1274 | Now, we must loop, waiting for the sending window to put a value on | |
1275 | that property, then reading the property, then deleting it to ack. | |
1276 | We are done when the sender places a property of length 0. | |
1277 | */ | |
2f65feb6 RS |
1278 | BLOCK_INPUT; |
1279 | XSelectInput (display, window, STANDARD_EVENT_SET | PropertyChangeMask); | |
1280 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1281 | wait_object = expect_property_change (display, window, property, |
1282 | PropertyNewValue); | |
5c3a351a | 1283 | XFlush (display); |
2f65feb6 RS |
1284 | UNBLOCK_INPUT; |
1285 | ||
ede4db72 RS |
1286 | while (1) |
1287 | { | |
1288 | unsigned char *tmp_data; | |
1289 | int tmp_size_bytes; | |
d1f21a66 | 1290 | wait_for_property_change (wait_object); |
ede4db72 | 1291 | /* expect it again immediately, because x_get_window_property may |
2a1a4c9d | 1292 | .. no it won't, I don't get it. |
ede4db72 RS |
1293 | .. Ok, I get it now, the Xt code that implements INCR is broken. |
1294 | */ | |
ede4db72 RS |
1295 | x_get_window_property (display, window, property, |
1296 | &tmp_data, &tmp_size_bytes, | |
1297 | type_ret, format_ret, size_ret, 1); | |
1298 | ||
1299 | if (tmp_size_bytes == 0) /* we're done */ | |
1300 | { | |
1301 | #if 0 | |
1302 | fprintf (stderr, " read INCR done\n"); | |
1303 | #endif | |
2f65feb6 RS |
1304 | if (! waiting_for_other_props_on_window (display, window)) |
1305 | XSelectInput (display, window, STANDARD_EVENT_SET); | |
d1f21a66 | 1306 | unexpect_property_change (wait_object); |
002bbc0e | 1307 | /* Use free, not XFree, because x_get_window_property |
0158abbc | 1308 | calls xmalloc itself. */ |
002bbc0e | 1309 | if (tmp_data) free (tmp_data); |
ede4db72 RS |
1310 | break; |
1311 | } | |
2f65feb6 RS |
1312 | |
1313 | BLOCK_INPUT; | |
1314 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1315 | wait_object = expect_property_change (display, window, property, |
1316 | PropertyNewValue); | |
5c3a351a | 1317 | XFlush (display); |
2f65feb6 RS |
1318 | UNBLOCK_INPUT; |
1319 | ||
ede4db72 RS |
1320 | #if 0 |
1321 | fprintf (stderr, " read INCR %d\n", tmp_size_bytes); | |
1322 | #endif | |
1323 | if (*size_bytes_ret < offset + tmp_size_bytes) | |
1324 | { | |
1325 | #if 0 | |
1326 | fprintf (stderr, " read INCR realloc %d -> %d\n", | |
1327 | *size_bytes_ret, offset + tmp_size_bytes); | |
1328 | #endif | |
1329 | *size_bytes_ret = offset + tmp_size_bytes; | |
1330 | *data_ret = (unsigned char *) xrealloc (*data_ret, *size_bytes_ret); | |
1331 | } | |
018cfa07 | 1332 | bcopy (tmp_data, (*data_ret) + offset, tmp_size_bytes); |
ede4db72 | 1333 | offset += tmp_size_bytes; |
002bbc0e | 1334 | /* Use free, not XFree, because x_get_window_property |
0158abbc | 1335 | calls xmalloc itself. */ |
002bbc0e | 1336 | free (tmp_data); |
ede4db72 RS |
1337 | } |
1338 | } | |
1339 | \f | |
1340 | /* Once a requested selection is "ready" (we got a SelectionNotify event), | |
1341 | fetch value from property PROPERTY of X window WINDOW on display DISPLAY. | |
1342 | TARGET_TYPE and SELECTION_ATOM are used in error message if this fails. */ | |
1343 | ||
1344 | static Lisp_Object | |
1345 | x_get_window_property_as_lisp_data (display, window, property, target_type, | |
1346 | selection_atom) | |
1347 | Display *display; | |
1348 | Window window; | |
1349 | Atom property; | |
1350 | Lisp_Object target_type; /* for error messages only */ | |
1351 | Atom selection_atom; /* for error messages only */ | |
1352 | { | |
1353 | Atom actual_type; | |
1354 | int actual_format; | |
1355 | unsigned long actual_size; | |
1356 | unsigned char *data = 0; | |
1357 | int bytes = 0; | |
1358 | Lisp_Object val; | |
5c3a351a | 1359 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 RS |
1360 | |
1361 | x_get_window_property (display, window, property, &data, &bytes, | |
1362 | &actual_type, &actual_format, &actual_size, 1); | |
1363 | if (! data) | |
1364 | { | |
1365 | int there_is_a_selection_owner; | |
1366 | BLOCK_INPUT; | |
1367 | there_is_a_selection_owner | |
1368 | = XGetSelectionOwner (display, selection_atom); | |
1369 | UNBLOCK_INPUT; | |
1370 | while (1) /* Note debugger can no longer return, so this is obsolete */ | |
1371 | Fsignal (Qerror, | |
1372 | there_is_a_selection_owner ? | |
1373 | Fcons (build_string ("selection owner couldn't convert"), | |
1374 | actual_type | |
1375 | ? Fcons (target_type, | |
5c3a351a RS |
1376 | Fcons (x_atom_to_symbol (dpyinfo, display, |
1377 | actual_type), | |
ede4db72 RS |
1378 | Qnil)) |
1379 | : Fcons (target_type, Qnil)) | |
1380 | : Fcons (build_string ("no selection"), | |
5c3a351a RS |
1381 | Fcons (x_atom_to_symbol (dpyinfo, display, |
1382 | selection_atom), | |
ede4db72 RS |
1383 | Qnil))); |
1384 | } | |
1385 | ||
5c3a351a | 1386 | if (actual_type == dpyinfo->Xatom_INCR) |
ede4db72 RS |
1387 | { |
1388 | /* That wasn't really the data, just the beginning. */ | |
1389 | ||
1390 | unsigned int min_size_bytes = * ((unsigned int *) data); | |
1391 | BLOCK_INPUT; | |
002bbc0e | 1392 | /* Use free, not XFree, because x_get_window_property |
0158abbc | 1393 | calls xmalloc itself. */ |
002bbc0e | 1394 | free ((char *) data); |
ede4db72 RS |
1395 | UNBLOCK_INPUT; |
1396 | receive_incremental_selection (display, window, property, target_type, | |
1397 | min_size_bytes, &data, &bytes, | |
1398 | &actual_type, &actual_format, | |
1399 | &actual_size); | |
1400 | } | |
1401 | ||
2f65feb6 RS |
1402 | BLOCK_INPUT; |
1403 | XDeleteProperty (display, window, property); | |
5c3a351a | 1404 | XFlush (display); |
2f65feb6 RS |
1405 | UNBLOCK_INPUT; |
1406 | ||
ede4db72 RS |
1407 | /* It's been read. Now convert it to a lisp object in some semi-rational |
1408 | manner. */ | |
1409 | val = selection_data_to_lisp_data (display, data, bytes, | |
1410 | actual_type, actual_format); | |
1411 | ||
002bbc0e | 1412 | /* Use free, not XFree, because x_get_window_property |
0158abbc | 1413 | calls xmalloc itself. */ |
002bbc0e | 1414 | free ((char *) data); |
ede4db72 RS |
1415 | return val; |
1416 | } | |
1417 | \f | |
1418 | /* These functions convert from the selection data read from the server into | |
1419 | something that we can use from Lisp, and vice versa. | |
1420 | ||
1421 | Type: Format: Size: Lisp Type: | |
1422 | ----- ------- ----- ----------- | |
1423 | * 8 * String | |
1424 | ATOM 32 1 Symbol | |
1425 | ATOM 32 > 1 Vector of Symbols | |
1426 | * 16 1 Integer | |
1427 | * 16 > 1 Vector of Integers | |
1428 | * 32 1 if <=16 bits: Integer | |
1429 | if > 16 bits: Cons of top16, bot16 | |
1430 | * 32 > 1 Vector of the above | |
1431 | ||
1432 | When converting a Lisp number to C, it is assumed to be of format 16 if | |
1433 | it is an integer, and of format 32 if it is a cons of two integers. | |
1434 | ||
1435 | When converting a vector of numbers from Lisp to C, it is assumed to be | |
1436 | of format 16 if every element in the vector is an integer, and is assumed | |
1437 | to be of format 32 if any element is a cons of two integers. | |
1438 | ||
1439 | When converting an object to C, it may be of the form (SYMBOL . <data>) | |
1440 | where SYMBOL is what we should claim that the type is. Format and | |
1441 | representation are as above. */ | |
1442 | ||
1443 | ||
1444 | ||
1445 | static Lisp_Object | |
1446 | selection_data_to_lisp_data (display, data, size, type, format) | |
1447 | Display *display; | |
1448 | unsigned char *data; | |
1449 | Atom type; | |
1450 | int size, format; | |
1451 | { | |
5c3a351a | 1452 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1453 | |
5c3a351a | 1454 | if (type == dpyinfo->Xatom_NULL) |
ede4db72 RS |
1455 | return QNULL; |
1456 | ||
1457 | /* Convert any 8-bit data to a string, for compactness. */ | |
1458 | else if (format == 8) | |
1459 | return make_string ((char *) data, size); | |
1460 | ||
1461 | /* Convert a single atom to a Lisp_Symbol. Convert a set of atoms to | |
1462 | a vector of symbols. | |
1463 | */ | |
1464 | else if (type == XA_ATOM) | |
1465 | { | |
1466 | int i; | |
1467 | if (size == sizeof (Atom)) | |
5c3a351a | 1468 | return x_atom_to_symbol (dpyinfo, display, *((Atom *) data)); |
ede4db72 RS |
1469 | else |
1470 | { | |
1471 | Lisp_Object v = Fmake_vector (size / sizeof (Atom), 0); | |
1472 | for (i = 0; i < size / sizeof (Atom); i++) | |
5c3a351a RS |
1473 | Faset (v, i, x_atom_to_symbol (dpyinfo, display, |
1474 | ((Atom *) data) [i])); | |
ede4db72 RS |
1475 | return v; |
1476 | } | |
1477 | } | |
1478 | ||
1479 | /* Convert a single 16 or small 32 bit number to a Lisp_Int. | |
1480 | If the number is > 16 bits, convert it to a cons of integers, | |
1481 | 16 bits in each half. | |
1482 | */ | |
1483 | else if (format == 32 && size == sizeof (long)) | |
1484 | return long_to_cons (((unsigned long *) data) [0]); | |
1485 | else if (format == 16 && size == sizeof (short)) | |
1486 | return make_number ((int) (((unsigned short *) data) [0])); | |
1487 | ||
1488 | /* Convert any other kind of data to a vector of numbers, represented | |
1489 | as above (as an integer, or a cons of two 16 bit integers.) | |
1490 | */ | |
1491 | else if (format == 16) | |
1492 | { | |
1493 | int i; | |
1494 | Lisp_Object v = Fmake_vector (size / 4, 0); | |
1495 | for (i = 0; i < size / 4; i++) | |
1496 | { | |
1497 | int j = (int) ((unsigned short *) data) [i]; | |
1498 | Faset (v, i, make_number (j)); | |
1499 | } | |
1500 | return v; | |
1501 | } | |
1502 | else | |
1503 | { | |
1504 | int i; | |
1505 | Lisp_Object v = Fmake_vector (size / 4, 0); | |
1506 | for (i = 0; i < size / 4; i++) | |
1507 | { | |
1508 | unsigned long j = ((unsigned long *) data) [i]; | |
1509 | Faset (v, i, long_to_cons (j)); | |
1510 | } | |
1511 | return v; | |
1512 | } | |
1513 | } | |
1514 | ||
1515 | ||
002bbc0e | 1516 | /* Use free, not XFree, to free the data obtained with this function. */ |
0158abbc | 1517 | |
ede4db72 RS |
1518 | static void |
1519 | lisp_data_to_selection_data (display, obj, | |
aca39f42 RS |
1520 | data_ret, type_ret, size_ret, |
1521 | format_ret, nofree_ret) | |
ede4db72 RS |
1522 | Display *display; |
1523 | Lisp_Object obj; | |
1524 | unsigned char **data_ret; | |
1525 | Atom *type_ret; | |
1526 | unsigned int *size_ret; | |
1527 | int *format_ret; | |
aca39f42 | 1528 | int *nofree_ret; |
ede4db72 RS |
1529 | { |
1530 | Lisp_Object type = Qnil; | |
5c3a351a | 1531 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
aca39f42 RS |
1532 | |
1533 | *nofree_ret = 0; | |
1534 | ||
ede4db72 RS |
1535 | if (CONSP (obj) && SYMBOLP (XCONS (obj)->car)) |
1536 | { | |
1537 | type = XCONS (obj)->car; | |
1538 | obj = XCONS (obj)->cdr; | |
1539 | if (CONSP (obj) && NILP (XCONS (obj)->cdr)) | |
1540 | obj = XCONS (obj)->car; | |
1541 | } | |
1542 | ||
1543 | if (EQ (obj, QNULL) || (EQ (type, QNULL))) | |
1544 | { /* This is not the same as declining */ | |
1545 | *format_ret = 32; | |
1546 | *size_ret = 0; | |
1547 | *data_ret = 0; | |
1548 | type = QNULL; | |
1549 | } | |
1550 | else if (STRINGP (obj)) | |
1551 | { | |
1552 | *format_ret = 8; | |
1553 | *size_ret = XSTRING (obj)->size; | |
aca39f42 RS |
1554 | *data_ret = XSTRING (obj)->data; |
1555 | *nofree_ret = 1; | |
ede4db72 RS |
1556 | if (NILP (type)) type = QSTRING; |
1557 | } | |
1558 | else if (SYMBOLP (obj)) | |
1559 | { | |
1560 | *format_ret = 32; | |
1561 | *size_ret = 1; | |
1562 | *data_ret = (unsigned char *) xmalloc (sizeof (Atom) + 1); | |
1563 | (*data_ret) [sizeof (Atom)] = 0; | |
5c3a351a | 1564 | (*(Atom **) data_ret) [0] = symbol_to_x_atom (dpyinfo, display, obj); |
ede4db72 RS |
1565 | if (NILP (type)) type = QATOM; |
1566 | } | |
7da64e5c | 1567 | else if (INTEGERP (obj) |
ede4db72 RS |
1568 | && XINT (obj) < 0xFFFF |
1569 | && XINT (obj) > -0xFFFF) | |
1570 | { | |
1571 | *format_ret = 16; | |
1572 | *size_ret = 1; | |
1573 | *data_ret = (unsigned char *) xmalloc (sizeof (short) + 1); | |
1574 | (*data_ret) [sizeof (short)] = 0; | |
1575 | (*(short **) data_ret) [0] = (short) XINT (obj); | |
1576 | if (NILP (type)) type = QINTEGER; | |
1577 | } | |
a87ed99c RS |
1578 | else if (INTEGERP (obj) |
1579 | || (CONSP (obj) && INTEGERP (XCONS (obj)->car) | |
1580 | && (INTEGERP (XCONS (obj)->cdr) | |
1581 | || (CONSP (XCONS (obj)->cdr) | |
1582 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car))))) | |
ede4db72 RS |
1583 | { |
1584 | *format_ret = 32; | |
1585 | *size_ret = 1; | |
1586 | *data_ret = (unsigned char *) xmalloc (sizeof (long) + 1); | |
1587 | (*data_ret) [sizeof (long)] = 0; | |
1588 | (*(unsigned long **) data_ret) [0] = cons_to_long (obj); | |
1589 | if (NILP (type)) type = QINTEGER; | |
1590 | } | |
1591 | else if (VECTORP (obj)) | |
1592 | { | |
1593 | /* Lisp_Vectors may represent a set of ATOMs; | |
1594 | a set of 16 or 32 bit INTEGERs; | |
1595 | or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...] | |
1596 | */ | |
1597 | int i; | |
1598 | ||
1599 | if (SYMBOLP (XVECTOR (obj)->contents [0])) | |
1600 | /* This vector is an ATOM set */ | |
1601 | { | |
1602 | if (NILP (type)) type = QATOM; | |
1603 | *size_ret = XVECTOR (obj)->size; | |
1604 | *format_ret = 32; | |
1605 | *data_ret = (unsigned char *) xmalloc ((*size_ret) * sizeof (Atom)); | |
1606 | for (i = 0; i < *size_ret; i++) | |
1607 | if (SYMBOLP (XVECTOR (obj)->contents [i])) | |
1608 | (*(Atom **) data_ret) [i] | |
5c3a351a | 1609 | = symbol_to_x_atom (dpyinfo, display, XVECTOR (obj)->contents [i]); |
ede4db72 RS |
1610 | else |
1611 | Fsignal (Qerror, /* Qselection_error */ | |
1612 | Fcons (build_string | |
1613 | ("all elements of selection vector must have same type"), | |
1614 | Fcons (obj, Qnil))); | |
1615 | } | |
1616 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1617 | else if (VECTORP (XVECTOR (obj)->contents [0])) | |
1618 | /* This vector is an ATOM_PAIR set */ | |
1619 | { | |
1620 | if (NILP (type)) type = QATOM_PAIR; | |
1621 | *size_ret = XVECTOR (obj)->size; | |
1622 | *format_ret = 32; | |
1623 | *data_ret = (unsigned char *) | |
1624 | xmalloc ((*size_ret) * sizeof (Atom) * 2); | |
1625 | for (i = 0; i < *size_ret; i++) | |
1626 | if (VECTORP (XVECTOR (obj)->contents [i])) | |
1627 | { | |
1628 | Lisp_Object pair = XVECTOR (obj)->contents [i]; | |
1629 | if (XVECTOR (pair)->size != 2) | |
1630 | Fsignal (Qerror, | |
1631 | Fcons (build_string | |
1632 | ("elements of the vector must be vectors of exactly two elements"), | |
1633 | Fcons (pair, Qnil))); | |
1634 | ||
1635 | (*(Atom **) data_ret) [i * 2] | |
5c3a351a RS |
1636 | = symbol_to_x_atom (dpyinfo, display, |
1637 | XVECTOR (pair)->contents [0]); | |
ede4db72 | 1638 | (*(Atom **) data_ret) [(i * 2) + 1] |
5c3a351a RS |
1639 | = symbol_to_x_atom (dpyinfo, display, |
1640 | XVECTOR (pair)->contents [1]); | |
ede4db72 RS |
1641 | } |
1642 | else | |
1643 | Fsignal (Qerror, | |
1644 | Fcons (build_string | |
1645 | ("all elements of the vector must be of the same type"), | |
1646 | Fcons (obj, Qnil))); | |
1647 | ||
1648 | } | |
1649 | #endif | |
1650 | else | |
1651 | /* This vector is an INTEGER set, or something like it */ | |
1652 | { | |
1653 | *size_ret = XVECTOR (obj)->size; | |
1654 | if (NILP (type)) type = QINTEGER; | |
1655 | *format_ret = 16; | |
1656 | for (i = 0; i < *size_ret; i++) | |
1657 | if (CONSP (XVECTOR (obj)->contents [i])) | |
1658 | *format_ret = 32; | |
7da64e5c | 1659 | else if (!INTEGERP (XVECTOR (obj)->contents [i])) |
ede4db72 RS |
1660 | Fsignal (Qerror, /* Qselection_error */ |
1661 | Fcons (build_string | |
1662 | ("elements of selection vector must be integers or conses of integers"), | |
1663 | Fcons (obj, Qnil))); | |
1664 | ||
1665 | *data_ret = (unsigned char *) xmalloc (*size_ret * (*format_ret/8)); | |
1666 | for (i = 0; i < *size_ret; i++) | |
1667 | if (*format_ret == 32) | |
1668 | (*((unsigned long **) data_ret)) [i] | |
1669 | = cons_to_long (XVECTOR (obj)->contents [i]); | |
1670 | else | |
1671 | (*((unsigned short **) data_ret)) [i] | |
1672 | = (unsigned short) cons_to_long (XVECTOR (obj)->contents [i]); | |
1673 | } | |
1674 | } | |
1675 | else | |
1676 | Fsignal (Qerror, /* Qselection_error */ | |
1677 | Fcons (build_string ("unrecognised selection data"), | |
1678 | Fcons (obj, Qnil))); | |
1679 | ||
5c3a351a | 1680 | *type_ret = symbol_to_x_atom (dpyinfo, display, type); |
ede4db72 RS |
1681 | } |
1682 | ||
1683 | static Lisp_Object | |
1684 | clean_local_selection_data (obj) | |
1685 | Lisp_Object obj; | |
1686 | { | |
1687 | if (CONSP (obj) | |
7da64e5c | 1688 | && INTEGERP (XCONS (obj)->car) |
ede4db72 | 1689 | && CONSP (XCONS (obj)->cdr) |
7da64e5c | 1690 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car) |
ede4db72 RS |
1691 | && NILP (XCONS (XCONS (obj)->cdr)->cdr)) |
1692 | obj = Fcons (XCONS (obj)->car, XCONS (obj)->cdr); | |
1693 | ||
1694 | if (CONSP (obj) | |
7da64e5c RS |
1695 | && INTEGERP (XCONS (obj)->car) |
1696 | && INTEGERP (XCONS (obj)->cdr)) | |
ede4db72 RS |
1697 | { |
1698 | if (XINT (XCONS (obj)->car) == 0) | |
1699 | return XCONS (obj)->cdr; | |
1700 | if (XINT (XCONS (obj)->car) == -1) | |
1701 | return make_number (- XINT (XCONS (obj)->cdr)); | |
1702 | } | |
1703 | if (VECTORP (obj)) | |
1704 | { | |
1705 | int i; | |
1706 | int size = XVECTOR (obj)->size; | |
1707 | Lisp_Object copy; | |
1708 | if (size == 1) | |
1709 | return clean_local_selection_data (XVECTOR (obj)->contents [0]); | |
1710 | copy = Fmake_vector (size, Qnil); | |
1711 | for (i = 0; i < size; i++) | |
1712 | XVECTOR (copy)->contents [i] | |
1713 | = clean_local_selection_data (XVECTOR (obj)->contents [i]); | |
1714 | return copy; | |
1715 | } | |
1716 | return obj; | |
1717 | } | |
1718 | \f | |
1719 | /* Called from XTread_socket to handle SelectionNotify events. | |
606140dd KH |
1720 | If it's the selection we are waiting for, stop waiting |
1721 | by setting the car of reading_selection_reply to non-nil. | |
1722 | We store t there if the reply is successful, lambda if not. */ | |
ede4db72 RS |
1723 | |
1724 | void | |
1725 | x_handle_selection_notify (event) | |
1726 | XSelectionEvent *event; | |
1727 | { | |
5d0ba25b | 1728 | if (event->requestor != reading_selection_window) |
ede4db72 RS |
1729 | return; |
1730 | if (event->selection != reading_which_selection) | |
1731 | return; | |
1732 | ||
606140dd KH |
1733 | XCONS (reading_selection_reply)->car |
1734 | = (event->property != 0 ? Qt : Qlambda); | |
ede4db72 RS |
1735 | } |
1736 | ||
1737 | \f | |
1738 | DEFUN ("x-own-selection-internal", | |
1739 | Fx_own_selection_internal, Sx_own_selection_internal, | |
1740 | 2, 2, 0, | |
1741 | "Assert an X selection of the given TYPE with the given VALUE.\n\ | |
1742 | TYPE is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1743 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1744 | VALUE is typically a string, or a cons of two markers, but may be\n\ | |
a87ed99c | 1745 | anything that the functions on `selection-converter-alist' know about.") |
ede4db72 RS |
1746 | (selection_name, selection_value) |
1747 | Lisp_Object selection_name, selection_value; | |
1748 | { | |
703e0710 | 1749 | check_x (); |
ede4db72 | 1750 | CHECK_SYMBOL (selection_name, 0); |
606140dd | 1751 | if (NILP (selection_value)) error ("selection-value may not be nil"); |
ede4db72 RS |
1752 | x_own_selection (selection_name, selection_value); |
1753 | return selection_value; | |
1754 | } | |
1755 | ||
1756 | ||
1757 | /* Request the selection value from the owner. If we are the owner, | |
1758 | simply return our selection value. If we are not the owner, this | |
1759 | will block until all of the data has arrived. */ | |
1760 | ||
1761 | DEFUN ("x-get-selection-internal", | |
1762 | Fx_get_selection_internal, Sx_get_selection_internal, 2, 2, 0, | |
1763 | "Return text selected from some X window.\n\ | |
1764 | SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1765 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
a87ed99c | 1766 | TYPE is the type of data desired, typically `STRING'.") |
ede4db72 RS |
1767 | (selection_symbol, target_type) |
1768 | Lisp_Object selection_symbol, target_type; | |
1769 | { | |
1770 | Lisp_Object val = Qnil; | |
1771 | struct gcpro gcpro1, gcpro2; | |
1772 | GCPRO2 (target_type, val); /* we store newly consed data into these */ | |
703e0710 | 1773 | check_x (); |
ede4db72 RS |
1774 | CHECK_SYMBOL (selection_symbol, 0); |
1775 | ||
1776 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1777 | if (CONSP (target_type) | |
1778 | && XCONS (target_type)->car == QMULTIPLE) | |
1779 | { | |
1780 | CHECK_VECTOR (XCONS (target_type)->cdr, 0); | |
1781 | /* So we don't destructively modify this... */ | |
1782 | target_type = copy_multiple_data (target_type); | |
1783 | } | |
1784 | else | |
1785 | #endif | |
1786 | CHECK_SYMBOL (target_type, 0); | |
1787 | ||
1788 | val = x_get_local_selection (selection_symbol, target_type); | |
1789 | ||
1790 | if (NILP (val)) | |
1791 | { | |
1792 | val = x_get_foreign_selection (selection_symbol, target_type); | |
1793 | goto DONE; | |
1794 | } | |
1795 | ||
1796 | if (CONSP (val) | |
1797 | && SYMBOLP (XCONS (val)->car)) | |
1798 | { | |
1799 | val = XCONS (val)->cdr; | |
1800 | if (CONSP (val) && NILP (XCONS (val)->cdr)) | |
1801 | val = XCONS (val)->car; | |
1802 | } | |
1803 | val = clean_local_selection_data (val); | |
1804 | DONE: | |
1805 | UNGCPRO; | |
1806 | return val; | |
1807 | } | |
1808 | ||
1809 | DEFUN ("x-disown-selection-internal", | |
1810 | Fx_disown_selection_internal, Sx_disown_selection_internal, 1, 2, 0, | |
a87ed99c RS |
1811 | "If we own the selection SELECTION, disown it.\n\ |
1812 | Disowning it means there is no such selection.") | |
ede4db72 RS |
1813 | (selection, time) |
1814 | Lisp_Object selection; | |
1815 | Lisp_Object time; | |
1816 | { | |
ede4db72 RS |
1817 | Time timestamp; |
1818 | Atom selection_atom; | |
1819 | XSelectionClearEvent event; | |
3834c318 | 1820 | Display *display; |
5c3a351a | 1821 | struct x_display_info *dpyinfo; |
ede4db72 | 1822 | |
703e0710 | 1823 | check_x (); |
3834c318 | 1824 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1825 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
ede4db72 RS |
1826 | CHECK_SYMBOL (selection, 0); |
1827 | if (NILP (time)) | |
7da64e5c | 1828 | timestamp = last_event_timestamp; |
ede4db72 RS |
1829 | else |
1830 | timestamp = cons_to_long (time); | |
1831 | ||
1832 | if (NILP (assq_no_quit (selection, Vselection_alist))) | |
1833 | return Qnil; /* Don't disown the selection when we're not the owner. */ | |
1834 | ||
5c3a351a | 1835 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection); |
ede4db72 RS |
1836 | |
1837 | BLOCK_INPUT; | |
1838 | XSetSelectionOwner (display, selection_atom, None, timestamp); | |
1839 | UNBLOCK_INPUT; | |
1840 | ||
eb8c3be9 | 1841 | /* It doesn't seem to be guaranteed that a SelectionClear event will be |
ede4db72 RS |
1842 | generated for a window which owns the selection when that window sets |
1843 | the selection owner to None. The NCD server does, the MIT Sun4 server | |
1844 | doesn't. So we synthesize one; this means we might get two, but | |
1845 | that's ok, because the second one won't have any effect. */ | |
8d47f8c4 RS |
1846 | SELECTION_EVENT_DISPLAY (&event) = display; |
1847 | SELECTION_EVENT_SELECTION (&event) = selection_atom; | |
1848 | SELECTION_EVENT_TIME (&event) = timestamp; | |
ede4db72 RS |
1849 | x_handle_selection_clear (&event); |
1850 | ||
1851 | return Qt; | |
1852 | } | |
1853 | ||
a87ed99c RS |
1854 | /* Get rid of all the selections in buffer BUFFER. |
1855 | This is used when we kill a buffer. */ | |
1856 | ||
1857 | void | |
1858 | x_disown_buffer_selections (buffer) | |
1859 | Lisp_Object buffer; | |
1860 | { | |
1861 | Lisp_Object tail; | |
1862 | struct buffer *buf = XBUFFER (buffer); | |
1863 | ||
1864 | for (tail = Vselection_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1865 | { | |
1866 | Lisp_Object elt, value; | |
1867 | elt = XCONS (tail)->car; | |
1868 | value = XCONS (elt)->cdr; | |
1869 | if (CONSP (value) && MARKERP (XCONS (value)->car) | |
1870 | && XMARKER (XCONS (value)->car)->buffer == buf) | |
1871 | Fx_disown_selection_internal (XCONS (elt)->car, Qnil); | |
1872 | } | |
1873 | } | |
ede4db72 RS |
1874 | |
1875 | DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p, | |
1876 | 0, 1, 0, | |
a87ed99c | 1877 | "Whether the current Emacs process owns the given X Selection.\n\ |
ede4db72 RS |
1878 | The arg should be the name of the selection in question, typically one of\n\ |
1879 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1880 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1881 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
1882 | and t is the same as `SECONDARY'.)") | |
1883 | (selection) | |
1884 | Lisp_Object selection; | |
1885 | { | |
703e0710 | 1886 | check_x (); |
ede4db72 RS |
1887 | CHECK_SYMBOL (selection, 0); |
1888 | if (EQ (selection, Qnil)) selection = QPRIMARY; | |
1889 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
1890 | ||
1891 | if (NILP (Fassq (selection, Vselection_alist))) | |
1892 | return Qnil; | |
1893 | return Qt; | |
1894 | } | |
1895 | ||
1896 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
1897 | 0, 1, 0, | |
1898 | "Whether there is an owner for the given X Selection.\n\ | |
1899 | The arg should be the name of the selection in question, typically one of\n\ | |
1900 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1901 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1902 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
1903 | and t is the same as `SECONDARY'.)") | |
1904 | (selection) | |
1905 | Lisp_Object selection; | |
1906 | { | |
1907 | Window owner; | |
356ba514 | 1908 | Atom atom; |
3834c318 RS |
1909 | Display *dpy; |
1910 | ||
b8c70430 | 1911 | /* It should be safe to call this before we have an X frame. */ |
c6423dc1 | 1912 | if (! FRAME_X_P (selected_frame)) |
b8c70430 RS |
1913 | return Qnil; |
1914 | ||
3834c318 | 1915 | dpy = FRAME_X_DISPLAY (selected_frame); |
ede4db72 RS |
1916 | CHECK_SYMBOL (selection, 0); |
1917 | if (!NILP (Fx_selection_owner_p (selection))) | |
1918 | return Qt; | |
356ba514 RS |
1919 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
1920 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
5c3a351a RS |
1921 | atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
1922 | dpy, selection); | |
356ba514 RS |
1923 | if (atom == 0) |
1924 | return Qnil; | |
ede4db72 | 1925 | BLOCK_INPUT; |
356ba514 | 1926 | owner = XGetSelectionOwner (dpy, atom); |
ede4db72 RS |
1927 | UNBLOCK_INPUT; |
1928 | return (owner ? Qt : Qnil); | |
1929 | } | |
1930 | ||
1931 | \f | |
1932 | #ifdef CUT_BUFFER_SUPPORT | |
1933 | ||
ede4db72 RS |
1934 | /* Ensure that all 8 cut buffers exist. ICCCM says we gotta... */ |
1935 | static void | |
1936 | initialize_cut_buffers (display, window) | |
1937 | Display *display; | |
1938 | Window window; | |
1939 | { | |
1940 | unsigned char *data = (unsigned char *) ""; | |
1941 | BLOCK_INPUT; | |
1942 | #define FROB(atom) XChangeProperty (display, window, atom, XA_STRING, 8, \ | |
1943 | PropModeAppend, data, 0) | |
1944 | FROB (XA_CUT_BUFFER0); | |
1945 | FROB (XA_CUT_BUFFER1); | |
1946 | FROB (XA_CUT_BUFFER2); | |
1947 | FROB (XA_CUT_BUFFER3); | |
1948 | FROB (XA_CUT_BUFFER4); | |
1949 | FROB (XA_CUT_BUFFER5); | |
1950 | FROB (XA_CUT_BUFFER6); | |
1951 | FROB (XA_CUT_BUFFER7); | |
1952 | #undef FROB | |
1953 | UNBLOCK_INPUT; | |
ede4db72 RS |
1954 | } |
1955 | ||
1956 | ||
a87ed99c | 1957 | #define CHECK_CUT_BUFFER(symbol,n) \ |
ede4db72 RS |
1958 | { CHECK_SYMBOL ((symbol), (n)); \ |
1959 | if (!EQ((symbol), QCUT_BUFFER0) && !EQ((symbol), QCUT_BUFFER1) \ | |
1960 | && !EQ((symbol), QCUT_BUFFER2) && !EQ((symbol), QCUT_BUFFER3) \ | |
1961 | && !EQ((symbol), QCUT_BUFFER4) && !EQ((symbol), QCUT_BUFFER5) \ | |
1962 | && !EQ((symbol), QCUT_BUFFER6) && !EQ((symbol), QCUT_BUFFER7)) \ | |
1963 | Fsignal (Qerror, \ | |
a87ed99c | 1964 | Fcons (build_string ("doesn't name a cut buffer"), \ |
ede4db72 RS |
1965 | Fcons ((symbol), Qnil))); \ |
1966 | } | |
1967 | ||
a87ed99c RS |
1968 | DEFUN ("x-get-cut-buffer-internal", Fx_get_cut_buffer_internal, |
1969 | Sx_get_cut_buffer_internal, 1, 1, 0, | |
1970 | "Returns the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
1971 | (buffer) |
1972 | Lisp_Object buffer; | |
1973 | { | |
3834c318 | 1974 | Window window; |
ede4db72 RS |
1975 | Atom buffer_atom; |
1976 | unsigned char *data; | |
1977 | int bytes; | |
1978 | Atom type; | |
1979 | int format; | |
1980 | unsigned long size; | |
1981 | Lisp_Object ret; | |
3834c318 | 1982 | Display *display; |
5c3a351a | 1983 | struct x_display_info *dpyinfo; |
ede4db72 | 1984 | |
703e0710 | 1985 | check_x (); |
3834c318 | 1986 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1987 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
3834c318 | 1988 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ |
a87ed99c | 1989 | CHECK_CUT_BUFFER (buffer, 0); |
5c3a351a | 1990 | buffer_atom = symbol_to_x_atom (dpyinfo, display, buffer); |
ede4db72 RS |
1991 | |
1992 | x_get_window_property (display, window, buffer_atom, &data, &bytes, | |
1993 | &type, &format, &size, 0); | |
1994 | if (!data) return Qnil; | |
1995 | ||
1996 | if (format != 8 || type != XA_STRING) | |
1997 | Fsignal (Qerror, | |
1998 | Fcons (build_string ("cut buffer doesn't contain 8-bit data"), | |
5c3a351a | 1999 | Fcons (x_atom_to_symbol (dpyinfo, display, type), |
ede4db72 RS |
2000 | Fcons (make_number (format), Qnil)))); |
2001 | ||
2002 | ret = (bytes ? make_string ((char *) data, bytes) : Qnil); | |
002bbc0e | 2003 | /* Use free, not XFree, because x_get_window_property |
0158abbc | 2004 | calls xmalloc itself. */ |
002bbc0e | 2005 | free (data); |
ede4db72 RS |
2006 | return ret; |
2007 | } | |
2008 | ||
2009 | ||
a87ed99c RS |
2010 | DEFUN ("x-store-cut-buffer-internal", Fx_store_cut_buffer_internal, |
2011 | Sx_store_cut_buffer_internal, 2, 2, 0, | |
2012 | "Sets the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
2013 | (buffer, string) |
2014 | Lisp_Object buffer, string; | |
2015 | { | |
3834c318 | 2016 | Window window; |
ede4db72 RS |
2017 | Atom buffer_atom; |
2018 | unsigned char *data; | |
2019 | int bytes; | |
2020 | int bytes_remaining; | |
3834c318 RS |
2021 | int max_bytes; |
2022 | Display *display; | |
ede4db72 | 2023 | |
703e0710 | 2024 | check_x (); |
3834c318 RS |
2025 | display = FRAME_X_DISPLAY (selected_frame); |
2026 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
2027 | ||
2028 | max_bytes = SELECTION_QUANTUM (display); | |
2029 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
2030 | max_bytes = MAX_SELECTION_QUANTUM; | |
2031 | ||
a87ed99c | 2032 | CHECK_CUT_BUFFER (buffer, 0); |
ede4db72 | 2033 | CHECK_STRING (string, 0); |
5c3a351a RS |
2034 | buffer_atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
2035 | display, buffer); | |
ede4db72 RS |
2036 | data = (unsigned char *) XSTRING (string)->data; |
2037 | bytes = XSTRING (string)->size; | |
2038 | bytes_remaining = bytes; | |
2039 | ||
04649dbc KH |
2040 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
2041 | { | |
2042 | initialize_cut_buffers (display, window); | |
2043 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; | |
2044 | } | |
ede4db72 RS |
2045 | |
2046 | BLOCK_INPUT; | |
10608c8c RS |
2047 | |
2048 | /* Don't mess up with an empty value. */ | |
2049 | if (!bytes_remaining) | |
2050 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2051 | PropModeReplace, data, 0); | |
2052 | ||
ede4db72 RS |
2053 | while (bytes_remaining) |
2054 | { | |
2055 | int chunk = (bytes_remaining < max_bytes | |
2056 | ? bytes_remaining : max_bytes); | |
2057 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2058 | (bytes_remaining == bytes | |
2059 | ? PropModeReplace | |
2060 | : PropModeAppend), | |
2061 | data, chunk); | |
2062 | data += chunk; | |
2063 | bytes_remaining -= chunk; | |
2064 | } | |
2065 | UNBLOCK_INPUT; | |
2066 | return string; | |
2067 | } | |
2068 | ||
2069 | ||
a87ed99c RS |
2070 | DEFUN ("x-rotate-cut-buffers-internal", Fx_rotate_cut_buffers_internal, |
2071 | Sx_rotate_cut_buffers_internal, 1, 1, 0, | |
2072 | "Rotate the values of the cut buffers by the given number of steps;\n\ | |
ede4db72 RS |
2073 | positive means move values forward, negative means backward.") |
2074 | (n) | |
2075 | Lisp_Object n; | |
2076 | { | |
3834c318 RS |
2077 | Window window; |
2078 | Atom props[8]; | |
2079 | Display *display; | |
ede4db72 | 2080 | |
703e0710 | 2081 | check_x (); |
3834c318 RS |
2082 | display = FRAME_X_DISPLAY (selected_frame); |
2083 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
7da64e5c | 2084 | CHECK_NUMBER (n, 0); |
3834c318 RS |
2085 | if (XINT (n) == 0) |
2086 | return n; | |
04649dbc KH |
2087 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
2088 | { | |
2089 | initialize_cut_buffers (display, window); | |
2090 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; | |
2091 | } | |
3834c318 | 2092 | |
ede4db72 RS |
2093 | props[0] = XA_CUT_BUFFER0; |
2094 | props[1] = XA_CUT_BUFFER1; | |
2095 | props[2] = XA_CUT_BUFFER2; | |
2096 | props[3] = XA_CUT_BUFFER3; | |
2097 | props[4] = XA_CUT_BUFFER4; | |
2098 | props[5] = XA_CUT_BUFFER5; | |
2099 | props[6] = XA_CUT_BUFFER6; | |
2100 | props[7] = XA_CUT_BUFFER7; | |
2101 | BLOCK_INPUT; | |
2102 | XRotateWindowProperties (display, window, props, 8, XINT (n)); | |
2103 | UNBLOCK_INPUT; | |
2104 | return n; | |
2105 | } | |
2106 | ||
2107 | #endif | |
2108 | \f | |
ede4db72 RS |
2109 | void |
2110 | syms_of_xselect () | |
2111 | { | |
ede4db72 RS |
2112 | defsubr (&Sx_get_selection_internal); |
2113 | defsubr (&Sx_own_selection_internal); | |
2114 | defsubr (&Sx_disown_selection_internal); | |
2115 | defsubr (&Sx_selection_owner_p); | |
2116 | defsubr (&Sx_selection_exists_p); | |
2117 | ||
2118 | #ifdef CUT_BUFFER_SUPPORT | |
a87ed99c RS |
2119 | defsubr (&Sx_get_cut_buffer_internal); |
2120 | defsubr (&Sx_store_cut_buffer_internal); | |
2121 | defsubr (&Sx_rotate_cut_buffers_internal); | |
ede4db72 RS |
2122 | #endif |
2123 | ||
2124 | reading_selection_reply = Fcons (Qnil, Qnil); | |
2125 | staticpro (&reading_selection_reply); | |
2126 | reading_selection_window = 0; | |
2127 | reading_which_selection = 0; | |
2128 | ||
2129 | property_change_wait_list = 0; | |
2f65feb6 | 2130 | prop_location_identifier = 0; |
ede4db72 RS |
2131 | property_change_reply = Fcons (Qnil, Qnil); |
2132 | staticpro (&property_change_reply); | |
2133 | ||
2134 | Vselection_alist = Qnil; | |
2135 | staticpro (&Vselection_alist); | |
2136 | ||
2137 | DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist, | |
2138 | "An alist associating X Windows selection-types with functions.\n\ | |
2139 | These functions are called to convert the selection, with three args:\n\ | |
2140 | the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2141 | a desired type to which the selection should be converted;\n\ | |
2142 | and the local selection value (whatever was given to `x-own-selection').\n\ | |
2143 | \n\ | |
2144 | The function should return the value to send to the X server\n\ | |
2145 | \(typically a string). A return value of nil\n\ | |
2146 | means that the conversion could not be done.\n\ | |
2147 | A return value which is the symbol `NULL'\n\ | |
2148 | means that a side-effect was executed,\n\ | |
2149 | and there is no meaningful selection value."); | |
2150 | Vselection_converter_alist = Qnil; | |
2151 | ||
2152 | DEFVAR_LISP ("x-lost-selection-hooks", &Vx_lost_selection_hooks, | |
2153 | "A list of functions to be called when Emacs loses an X selection.\n\ | |
2154 | \(This happens when some other X client makes its own selection\n\ | |
2155 | or when a Lisp program explicitly clears the selection.)\n\ | |
2156 | The functions are called with one argument, the selection type\n\ | |
d31b6237 | 2157 | \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD')."); |
ede4db72 RS |
2158 | Vx_lost_selection_hooks = Qnil; |
2159 | ||
2160 | DEFVAR_LISP ("x-sent-selection-hooks", &Vx_sent_selection_hooks, | |
2161 | "A list of functions to be called when Emacs answers a selection request.\n\ | |
2162 | The functions are called with four arguments:\n\ | |
2163 | - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2164 | - the selection-type which Emacs was asked to convert the\n\ | |
2165 | selection into before sending (for example, `STRING' or `LENGTH');\n\ | |
2166 | - a flag indicating success or failure for responding to the request.\n\ | |
2167 | We might have failed (and declined the request) for any number of reasons,\n\ | |
2168 | including being asked for a selection that we no longer own, or being asked\n\ | |
2169 | to convert into a type that we don't know about or that is inappropriate.\n\ | |
2170 | This hook doesn't let you change the behavior of Emacs's selection replies,\n\ | |
2171 | it merely informs you that they have happened."); | |
2172 | Vx_sent_selection_hooks = Qnil; | |
2173 | ||
2174 | DEFVAR_INT ("x-selection-timeout", &x_selection_timeout, | |
80da0190 | 2175 | "Number of milliseconds to wait for a selection reply.\n\ |
2a1a4c9d | 2176 | If the selection owner doesn't reply in this time, we give up.\n\ |
ede4db72 | 2177 | A value of 0 means wait as long as necessary. This is initialized from the\n\ |
80da0190 | 2178 | \"*selectionTimeout\" resource."); |
ede4db72 RS |
2179 | x_selection_timeout = 0; |
2180 | ||
2181 | QPRIMARY = intern ("PRIMARY"); staticpro (&QPRIMARY); | |
2182 | QSECONDARY = intern ("SECONDARY"); staticpro (&QSECONDARY); | |
2183 | QSTRING = intern ("STRING"); staticpro (&QSTRING); | |
2184 | QINTEGER = intern ("INTEGER"); staticpro (&QINTEGER); | |
2185 | QCLIPBOARD = intern ("CLIPBOARD"); staticpro (&QCLIPBOARD); | |
2186 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2187 | QTEXT = intern ("TEXT"); staticpro (&QTEXT); | |
2188 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2189 | QDELETE = intern ("DELETE"); staticpro (&QDELETE); | |
2190 | QMULTIPLE = intern ("MULTIPLE"); staticpro (&QMULTIPLE); | |
2191 | QINCR = intern ("INCR"); staticpro (&QINCR); | |
2192 | QEMACS_TMP = intern ("_EMACS_TMP_"); staticpro (&QEMACS_TMP); | |
2193 | QTARGETS = intern ("TARGETS"); staticpro (&QTARGETS); | |
2194 | QATOM = intern ("ATOM"); staticpro (&QATOM); | |
2195 | QATOM_PAIR = intern ("ATOM_PAIR"); staticpro (&QATOM_PAIR); | |
2196 | QNULL = intern ("NULL"); staticpro (&QNULL); | |
2197 | ||
2198 | #ifdef CUT_BUFFER_SUPPORT | |
2199 | QCUT_BUFFER0 = intern ("CUT_BUFFER0"); staticpro (&QCUT_BUFFER0); | |
2200 | QCUT_BUFFER1 = intern ("CUT_BUFFER1"); staticpro (&QCUT_BUFFER1); | |
2201 | QCUT_BUFFER2 = intern ("CUT_BUFFER2"); staticpro (&QCUT_BUFFER2); | |
2202 | QCUT_BUFFER3 = intern ("CUT_BUFFER3"); staticpro (&QCUT_BUFFER3); | |
2203 | QCUT_BUFFER4 = intern ("CUT_BUFFER4"); staticpro (&QCUT_BUFFER4); | |
2204 | QCUT_BUFFER5 = intern ("CUT_BUFFER5"); staticpro (&QCUT_BUFFER5); | |
2205 | QCUT_BUFFER6 = intern ("CUT_BUFFER6"); staticpro (&QCUT_BUFFER6); | |
2206 | QCUT_BUFFER7 = intern ("CUT_BUFFER7"); staticpro (&QCUT_BUFFER7); | |
2207 | #endif | |
2208 | ||
2209 | } |