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2408b3a1 | 1 | /* X Selection processing for Emacs. |
3a22ee35 | 2 | Copyright (C) 1993, 1994 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 | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
c6c5df7f | 20 | /* x_handle_selection_notify |
80da0190 RS |
21 | x_reply_selection_request */ |
22 | ||
c6c5df7f | 23 | |
ede4db72 RS |
24 | /* Rewritten by jwz */ |
25 | ||
18160b98 | 26 | #include <config.h> |
ede4db72 | 27 | #include "lisp.h" |
7da64e5c RS |
28 | #if 0 |
29 | #include <stdio.h> /* termhooks.h needs this */ | |
30 | #include "termhooks.h" | |
31 | #endif | |
ede4db72 | 32 | #include "xterm.h" /* for all of the X includes */ |
7da64e5c RS |
33 | #include "dispextern.h" /* frame.h seems to want this */ |
34 | #include "frame.h" /* Need this to get the X window of selected_frame */ | |
9ac0d9e0 | 35 | #include "blockinput.h" |
7da64e5c RS |
36 | |
37 | #define xfree free | |
ede4db72 RS |
38 | |
39 | #define CUT_BUFFER_SUPPORT | |
40 | ||
ede4db72 RS |
41 | Lisp_Object QPRIMARY, QSECONDARY, QSTRING, QINTEGER, QCLIPBOARD, QTIMESTAMP, |
42 | QTEXT, QDELETE, QMULTIPLE, QINCR, QEMACS_TMP, QTARGETS, QATOM, QNULL, | |
43 | QATOM_PAIR; | |
44 | ||
45 | #ifdef CUT_BUFFER_SUPPORT | |
46 | Lisp_Object QCUT_BUFFER0, QCUT_BUFFER1, QCUT_BUFFER2, QCUT_BUFFER3, | |
47 | QCUT_BUFFER4, QCUT_BUFFER5, QCUT_BUFFER6, QCUT_BUFFER7; | |
48 | #endif | |
49 | ||
50 | Lisp_Object Vx_lost_selection_hooks; | |
51 | Lisp_Object Vx_sent_selection_hooks; | |
52 | ||
53 | /* If this is a smaller number than the max-request-size of the display, | |
54 | emacs will use INCR selection transfer when the selection is larger | |
55 | than this. The max-request-size is usually around 64k, so if you want | |
56 | emacs to use incremental selection transfers when the selection is | |
57 | smaller than that, set this. I added this mostly for debugging the | |
58 | incremental transfer stuff, but it might improve server performance. | |
59 | */ | |
60 | #define MAX_SELECTION_QUANTUM 0xFFFFFF | |
61 | ||
c3498e64 JB |
62 | #ifdef HAVE_X11R4 |
63 | #define SELECTION_QUANTUM(dpy) ((XMaxRequestSize(dpy) << 2) - 100) | |
64 | #else | |
65 | #define SELECTION_QUANTUM(dpy) (((dpy)->max_request_size << 2) - 100) | |
66 | #endif | |
ede4db72 | 67 | |
7da64e5c RS |
68 | /* The timestamp of the last input event Emacs received from the X server. */ |
69 | unsigned long last_event_timestamp; | |
ede4db72 RS |
70 | |
71 | /* This is an association list whose elements are of the form | |
118bd841 RS |
72 | ( SELECTION-NAME SELECTION-VALUE SELECTION-TIMESTAMP FRAME) |
73 | SELECTION-NAME is a lisp symbol, whose name is the name of an X Atom. | |
74 | SELECTION-VALUE is the value that emacs owns for that selection. | |
ede4db72 | 75 | It may be any kind of Lisp object. |
118bd841 | 76 | SELECTION-TIMESTAMP is the time at which emacs began owning this selection, |
ede4db72 | 77 | as a cons of two 16-bit numbers (making a 32 bit time.) |
118bd841 RS |
78 | FRAME is the frame for which we made the selection. |
79 | If there is an entry in this alist, then it can be assumed that Emacs owns | |
ede4db72 RS |
80 | that selection. |
81 | The only (eq) parts of this list that are visible from Lisp are the | |
82 | selection-values. | |
83 | */ | |
84 | Lisp_Object Vselection_alist; | |
85 | ||
86 | /* This is an alist whose CARs are selection-types (whose names are the same | |
87 | as the names of X Atoms) and whose CDRs are the names of Lisp functions to | |
88 | call to convert the given Emacs selection value to a string representing | |
89 | the given selection type. This is for Lisp-level extension of the emacs | |
90 | selection handling. | |
91 | */ | |
92 | Lisp_Object Vselection_converter_alist; | |
93 | ||
94 | /* If the selection owner takes too long to reply to a selection request, | |
80da0190 | 95 | we give up on it. This is in milliseconds (0 = no timeout.) |
ede4db72 RS |
96 | */ |
97 | int x_selection_timeout; | |
ede4db72 RS |
98 | \f |
99 | /* Utility functions */ | |
100 | ||
101 | static void lisp_data_to_selection_data (); | |
102 | static Lisp_Object selection_data_to_lisp_data (); | |
103 | static Lisp_Object x_get_window_property_as_lisp_data (); | |
104 | ||
ede4db72 RS |
105 | /* This converts a Lisp symbol to a server Atom, avoiding a server |
106 | roundtrip whenever possible. */ | |
107 | ||
108 | static Atom | |
5c3a351a RS |
109 | symbol_to_x_atom (dpyinfo, display, sym) |
110 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
111 | Display *display; |
112 | Lisp_Object sym; | |
113 | { | |
114 | Atom val; | |
115 | if (NILP (sym)) return 0; | |
116 | if (EQ (sym, QPRIMARY)) return XA_PRIMARY; | |
117 | if (EQ (sym, QSECONDARY)) return XA_SECONDARY; | |
118 | if (EQ (sym, QSTRING)) return XA_STRING; | |
119 | if (EQ (sym, QINTEGER)) return XA_INTEGER; | |
120 | if (EQ (sym, QATOM)) return XA_ATOM; | |
5c3a351a RS |
121 | if (EQ (sym, QCLIPBOARD)) return dpyinfo->Xatom_CLIPBOARD; |
122 | if (EQ (sym, QTIMESTAMP)) return dpyinfo->Xatom_TIMESTAMP; | |
123 | if (EQ (sym, QTEXT)) return dpyinfo->Xatom_TEXT; | |
124 | if (EQ (sym, QDELETE)) return dpyinfo->Xatom_DELETE; | |
125 | if (EQ (sym, QMULTIPLE)) return dpyinfo->Xatom_MULTIPLE; | |
126 | if (EQ (sym, QINCR)) return dpyinfo->Xatom_INCR; | |
127 | if (EQ (sym, QEMACS_TMP)) return dpyinfo->Xatom_EMACS_TMP; | |
128 | if (EQ (sym, QTARGETS)) return dpyinfo->Xatom_TARGETS; | |
129 | if (EQ (sym, QNULL)) return dpyinfo->Xatom_NULL; | |
ede4db72 RS |
130 | #ifdef CUT_BUFFER_SUPPORT |
131 | if (EQ (sym, QCUT_BUFFER0)) return XA_CUT_BUFFER0; | |
132 | if (EQ (sym, QCUT_BUFFER1)) return XA_CUT_BUFFER1; | |
133 | if (EQ (sym, QCUT_BUFFER2)) return XA_CUT_BUFFER2; | |
134 | if (EQ (sym, QCUT_BUFFER3)) return XA_CUT_BUFFER3; | |
135 | if (EQ (sym, QCUT_BUFFER4)) return XA_CUT_BUFFER4; | |
136 | if (EQ (sym, QCUT_BUFFER5)) return XA_CUT_BUFFER5; | |
137 | if (EQ (sym, QCUT_BUFFER6)) return XA_CUT_BUFFER6; | |
138 | if (EQ (sym, QCUT_BUFFER7)) return XA_CUT_BUFFER7; | |
139 | #endif | |
140 | if (!SYMBOLP (sym)) abort (); | |
141 | ||
142 | #if 0 | |
143 | fprintf (stderr, " XInternAtom %s\n", (char *) XSYMBOL (sym)->name->data); | |
144 | #endif | |
145 | BLOCK_INPUT; | |
146 | val = XInternAtom (display, (char *) XSYMBOL (sym)->name->data, False); | |
147 | UNBLOCK_INPUT; | |
148 | return val; | |
149 | } | |
150 | ||
151 | ||
152 | /* This converts a server Atom to a Lisp symbol, avoiding server roundtrips | |
153 | and calls to intern whenever possible. */ | |
154 | ||
155 | static Lisp_Object | |
5c3a351a RS |
156 | x_atom_to_symbol (dpyinfo, display, atom) |
157 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
158 | Display *display; |
159 | Atom atom; | |
160 | { | |
161 | char *str; | |
162 | Lisp_Object val; | |
163 | if (! atom) return Qnil; | |
7da64e5c RS |
164 | switch (atom) |
165 | { | |
166 | case XA_PRIMARY: | |
167 | return QPRIMARY; | |
168 | case XA_SECONDARY: | |
169 | return QSECONDARY; | |
170 | case XA_STRING: | |
171 | return QSTRING; | |
172 | case XA_INTEGER: | |
173 | return QINTEGER; | |
174 | case XA_ATOM: | |
175 | return QATOM; | |
ede4db72 | 176 | #ifdef CUT_BUFFER_SUPPORT |
7da64e5c RS |
177 | case XA_CUT_BUFFER0: |
178 | return QCUT_BUFFER0; | |
179 | case XA_CUT_BUFFER1: | |
180 | return QCUT_BUFFER1; | |
181 | case XA_CUT_BUFFER2: | |
182 | return QCUT_BUFFER2; | |
183 | case XA_CUT_BUFFER3: | |
184 | return QCUT_BUFFER3; | |
185 | case XA_CUT_BUFFER4: | |
186 | return QCUT_BUFFER4; | |
187 | case XA_CUT_BUFFER5: | |
188 | return QCUT_BUFFER5; | |
189 | case XA_CUT_BUFFER6: | |
190 | return QCUT_BUFFER6; | |
191 | case XA_CUT_BUFFER7: | |
192 | return QCUT_BUFFER7; | |
ede4db72 | 193 | #endif |
7da64e5c RS |
194 | } |
195 | ||
5c3a351a | 196 | if (atom == dpyinfo->Xatom_CLIPBOARD) |
7da64e5c | 197 | return QCLIPBOARD; |
5c3a351a | 198 | if (atom == dpyinfo->Xatom_TIMESTAMP) |
7da64e5c | 199 | return QTIMESTAMP; |
5c3a351a | 200 | if (atom == dpyinfo->Xatom_TEXT) |
7da64e5c | 201 | return QTEXT; |
5c3a351a | 202 | if (atom == dpyinfo->Xatom_DELETE) |
7da64e5c | 203 | return QDELETE; |
5c3a351a | 204 | if (atom == dpyinfo->Xatom_MULTIPLE) |
7da64e5c | 205 | return QMULTIPLE; |
5c3a351a | 206 | if (atom == dpyinfo->Xatom_INCR) |
7da64e5c | 207 | return QINCR; |
5c3a351a | 208 | if (atom == dpyinfo->Xatom_EMACS_TMP) |
7da64e5c | 209 | return QEMACS_TMP; |
5c3a351a | 210 | if (atom == dpyinfo->Xatom_TARGETS) |
7da64e5c | 211 | return QTARGETS; |
5c3a351a | 212 | if (atom == dpyinfo->Xatom_NULL) |
7da64e5c | 213 | return QNULL; |
ede4db72 RS |
214 | |
215 | BLOCK_INPUT; | |
216 | str = XGetAtomName (display, atom); | |
217 | UNBLOCK_INPUT; | |
218 | #if 0 | |
219 | fprintf (stderr, " XGetAtomName --> %s\n", str); | |
220 | #endif | |
221 | if (! str) return Qnil; | |
222 | val = intern (str); | |
223 | BLOCK_INPUT; | |
224 | XFree (str); | |
225 | UNBLOCK_INPUT; | |
226 | return val; | |
227 | } | |
8a89415e | 228 | \f |
ede4db72 RS |
229 | /* Do protocol to assert ourself as a selection owner. |
230 | Update the Vselection_alist so that we can reply to later requests for | |
231 | our selection. */ | |
232 | ||
233 | static void | |
234 | x_own_selection (selection_name, selection_value) | |
235 | Lisp_Object selection_name, selection_value; | |
236 | { | |
ede4db72 | 237 | Window selecting_window = FRAME_X_WINDOW (selected_frame); |
3834c318 | 238 | Display *display = FRAME_X_DISPLAY (selected_frame); |
7da64e5c | 239 | Time time = last_event_timestamp; |
ede4db72 | 240 | Atom selection_atom; |
5c3a351a | 241 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
ede4db72 RS |
242 | |
243 | CHECK_SYMBOL (selection_name, 0); | |
5c3a351a | 244 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection_name); |
ede4db72 RS |
245 | |
246 | BLOCK_INPUT; | |
a7b24d46 | 247 | x_catch_errors (display); |
ede4db72 | 248 | XSetSelectionOwner (display, selection_atom, selecting_window, time); |
a7b24d46 RS |
249 | x_check_errors (display, "Can't set selection: %s"); |
250 | x_uncatch_errors (display); | |
ede4db72 RS |
251 | UNBLOCK_INPUT; |
252 | ||
253 | /* Now update the local cache */ | |
254 | { | |
255 | Lisp_Object selection_time; | |
256 | Lisp_Object selection_data; | |
257 | Lisp_Object prev_value; | |
258 | ||
259 | selection_time = long_to_cons ((unsigned long) time); | |
260 | selection_data = Fcons (selection_name, | |
261 | Fcons (selection_value, | |
118bd841 RS |
262 | Fcons (selection_time, |
263 | Fcons (Fselected_frame (), Qnil)))); | |
ede4db72 RS |
264 | prev_value = assq_no_quit (selection_name, Vselection_alist); |
265 | ||
266 | Vselection_alist = Fcons (selection_data, Vselection_alist); | |
267 | ||
268 | /* If we already owned the selection, remove the old selection data. | |
269 | Perhaps we should destructively modify it instead. | |
270 | Don't use Fdelq as that may QUIT. */ | |
271 | if (!NILP (prev_value)) | |
272 | { | |
273 | Lisp_Object rest; /* we know it's not the CAR, so it's easy. */ | |
274 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
275 | if (EQ (prev_value, Fcar (XCONS (rest)->cdr))) | |
276 | { | |
277 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
278 | break; | |
279 | } | |
280 | } | |
281 | } | |
282 | } | |
283 | \f | |
284 | /* Given a selection-name and desired type, look up our local copy of | |
285 | the selection value and convert it to the type. | |
286 | The value is nil or a string. | |
287 | This function is used both for remote requests | |
7da64e5c | 288 | and for local x-get-selection-internal. |
ede4db72 RS |
289 | |
290 | This calls random Lisp code, and may signal or gc. */ | |
291 | ||
292 | static Lisp_Object | |
293 | x_get_local_selection (selection_symbol, target_type) | |
294 | Lisp_Object selection_symbol, target_type; | |
295 | { | |
296 | Lisp_Object local_value; | |
297 | Lisp_Object handler_fn, value, type, check; | |
298 | int count; | |
299 | ||
300 | local_value = assq_no_quit (selection_symbol, Vselection_alist); | |
301 | ||
302 | if (NILP (local_value)) return Qnil; | |
303 | ||
304 | /* TIMESTAMP and MULTIPLE are special cases 'cause that's easiest. */ | |
305 | if (EQ (target_type, QTIMESTAMP)) | |
306 | { | |
307 | handler_fn = Qnil; | |
308 | value = XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car; | |
309 | } | |
310 | #if 0 | |
311 | else if (EQ (target_type, QDELETE)) | |
312 | { | |
313 | handler_fn = Qnil; | |
314 | Fx_disown_selection_internal | |
315 | (selection_symbol, | |
316 | XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car); | |
317 | value = QNULL; | |
318 | } | |
319 | #endif | |
320 | ||
321 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
322 | else if (CONSP (target_type) | |
323 | && XCONS (target_type)->car == QMULTIPLE) | |
324 | { | |
9d2d1dd8 KH |
325 | Lisp_Object pairs; |
326 | int size; | |
ede4db72 | 327 | int i; |
9d2d1dd8 KH |
328 | pairs = XCONS (target_type)->cdr; |
329 | size = XVECTOR (pairs)->size; | |
ede4db72 RS |
330 | /* If the target is MULTIPLE, then target_type looks like |
331 | (MULTIPLE . [[SELECTION1 TARGET1] [SELECTION2 TARGET2] ... ]) | |
332 | We modify the second element of each pair in the vector and | |
333 | return it as [[SELECTION1 <value1>] [SELECTION2 <value2>] ... ] | |
334 | */ | |
335 | for (i = 0; i < size; i++) | |
336 | { | |
9d2d1dd8 KH |
337 | Lisp_Object pair; |
338 | pair = XVECTOR (pairs)->contents [i]; | |
ede4db72 RS |
339 | XVECTOR (pair)->contents [1] |
340 | = x_get_local_selection (XVECTOR (pair)->contents [0], | |
341 | XVECTOR (pair)->contents [1]); | |
342 | } | |
343 | return pairs; | |
344 | } | |
345 | #endif | |
346 | else | |
347 | { | |
348 | /* Don't allow a quit within the converter. | |
349 | When the user types C-g, he would be surprised | |
350 | if by luck it came during a converter. */ | |
351 | count = specpdl_ptr - specpdl; | |
352 | specbind (Qinhibit_quit, Qt); | |
353 | ||
354 | CHECK_SYMBOL (target_type, 0); | |
355 | handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist)); | |
1eb4d468 RS |
356 | if (!NILP (handler_fn)) |
357 | value = call3 (handler_fn, | |
358 | selection_symbol, target_type, | |
359 | XCONS (XCONS (local_value)->cdr)->car); | |
360 | else | |
361 | value = Qnil; | |
ede4db72 RS |
362 | unbind_to (count, Qnil); |
363 | } | |
364 | ||
365 | /* Make sure this value is of a type that we could transmit | |
366 | to another X client. */ | |
a87ed99c | 367 | |
ede4db72 RS |
368 | check = value; |
369 | if (CONSP (value) | |
370 | && SYMBOLP (XCONS (value)->car)) | |
371 | type = XCONS (value)->car, | |
372 | check = XCONS (value)->cdr; | |
373 | ||
374 | if (STRINGP (check) | |
375 | || VECTORP (check) | |
376 | || SYMBOLP (check) | |
7da64e5c | 377 | || INTEGERP (check) |
ede4db72 RS |
378 | || NILP (value)) |
379 | return value; | |
a87ed99c | 380 | /* Check for a value that cons_to_long could handle. */ |
ede4db72 | 381 | else if (CONSP (check) |
7da64e5c RS |
382 | && INTEGERP (XCONS (check)->car) |
383 | && (INTEGERP (XCONS (check)->cdr) | |
ede4db72 RS |
384 | || |
385 | (CONSP (XCONS (check)->cdr) | |
7da64e5c | 386 | && INTEGERP (XCONS (XCONS (check)->cdr)->car) |
ede4db72 RS |
387 | && NILP (XCONS (XCONS (check)->cdr)->cdr)))) |
388 | return value; | |
389 | else | |
390 | return | |
391 | Fsignal (Qerror, | |
a87ed99c | 392 | Fcons (build_string ("invalid data returned by selection-conversion function"), |
ede4db72 RS |
393 | Fcons (handler_fn, Fcons (value, Qnil)))); |
394 | } | |
395 | \f | |
396 | /* Subroutines of x_reply_selection_request. */ | |
397 | ||
398 | /* Send a SelectionNotify event to the requestor with property=None, | |
399 | meaning we were unable to do what they wanted. */ | |
400 | ||
401 | static void | |
402 | x_decline_selection_request (event) | |
403 | struct input_event *event; | |
404 | { | |
405 | XSelectionEvent reply; | |
406 | reply.type = SelectionNotify; | |
407 | reply.display = SELECTION_EVENT_DISPLAY (event); | |
408 | reply.requestor = SELECTION_EVENT_REQUESTOR (event); | |
409 | reply.selection = SELECTION_EVENT_SELECTION (event); | |
410 | reply.time = SELECTION_EVENT_TIME (event); | |
411 | reply.target = SELECTION_EVENT_TARGET (event); | |
412 | reply.property = None; | |
413 | ||
414 | BLOCK_INPUT; | |
7ffb2841 RS |
415 | XSendEvent (reply.display, reply.requestor, False, 0L, |
416 | (XEvent *) &reply); | |
5c3a351a | 417 | XFlush (reply.display); |
ede4db72 RS |
418 | UNBLOCK_INPUT; |
419 | } | |
420 | ||
421 | /* This is the selection request currently being processed. | |
422 | It is set to zero when the request is fully processed. */ | |
423 | static struct input_event *x_selection_current_request; | |
424 | ||
425 | /* Used as an unwind-protect clause so that, if a selection-converter signals | |
426 | an error, we tell the requestor that we were unable to do what they wanted | |
427 | before we throw to top-level or go into the debugger or whatever. */ | |
428 | ||
429 | static Lisp_Object | |
430 | x_selection_request_lisp_error (ignore) | |
431 | Lisp_Object ignore; | |
432 | { | |
433 | if (x_selection_current_request != 0) | |
434 | x_decline_selection_request (x_selection_current_request); | |
435 | return Qnil; | |
436 | } | |
437 | \f | |
d1f21a66 RS |
438 | |
439 | /* This stuff is so that INCR selections are reentrant (that is, so we can | |
440 | be servicing multiple INCR selection requests simultaneously.) I haven't | |
441 | actually tested that yet. */ | |
442 | ||
443 | /* Keep a list of the property changes that are awaited. */ | |
444 | ||
445 | struct prop_location | |
446 | { | |
447 | int identifier; | |
448 | Display *display; | |
449 | Window window; | |
450 | Atom property; | |
451 | int desired_state; | |
452 | int arrived; | |
453 | struct prop_location *next; | |
454 | }; | |
455 | ||
456 | static struct prop_location *expect_property_change (); | |
457 | static void wait_for_property_change (); | |
458 | static void unexpect_property_change (); | |
459 | static int waiting_for_other_props_on_window (); | |
460 | ||
461 | static int prop_location_identifier; | |
462 | ||
463 | static Lisp_Object property_change_reply; | |
464 | ||
465 | static struct prop_location *property_change_reply_object; | |
466 | ||
467 | static struct prop_location *property_change_wait_list; | |
468 | \f | |
ede4db72 RS |
469 | /* Send the reply to a selection request event EVENT. |
470 | TYPE is the type of selection data requested. | |
471 | DATA and SIZE describe the data to send, already converted. | |
472 | FORMAT is the unit-size (in bits) of the data to be transmitted. */ | |
473 | ||
474 | static void | |
475 | x_reply_selection_request (event, format, data, size, type) | |
476 | struct input_event *event; | |
477 | int format, size; | |
478 | unsigned char *data; | |
479 | Atom type; | |
480 | { | |
481 | XSelectionEvent reply; | |
482 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
483 | Window window = SELECTION_EVENT_REQUESTOR (event); | |
484 | int bytes_remaining; | |
485 | int format_bytes = format/8; | |
486 | int max_bytes = SELECTION_QUANTUM (display); | |
5c3a351a | 487 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 RS |
488 | |
489 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
490 | max_bytes = MAX_SELECTION_QUANTUM; | |
491 | ||
492 | reply.type = SelectionNotify; | |
493 | reply.display = display; | |
494 | reply.requestor = window; | |
495 | reply.selection = SELECTION_EVENT_SELECTION (event); | |
496 | reply.time = SELECTION_EVENT_TIME (event); | |
497 | reply.target = SELECTION_EVENT_TARGET (event); | |
498 | reply.property = SELECTION_EVENT_PROPERTY (event); | |
499 | if (reply.property == None) | |
500 | reply.property = reply.target; | |
501 | ||
502 | /* #### XChangeProperty can generate BadAlloc, and we must handle it! */ | |
503 | ||
ede4db72 RS |
504 | /* Store the data on the requested property. |
505 | If the selection is large, only store the first N bytes of it. | |
506 | */ | |
507 | bytes_remaining = size * format_bytes; | |
508 | if (bytes_remaining <= max_bytes) | |
509 | { | |
510 | /* Send all the data at once, with minimal handshaking. */ | |
511 | #if 0 | |
512 | fprintf (stderr,"\nStoring all %d\n", bytes_remaining); | |
513 | #endif | |
2f65feb6 | 514 | BLOCK_INPUT; |
ede4db72 RS |
515 | XChangeProperty (display, window, reply.property, type, format, |
516 | PropModeReplace, data, size); | |
517 | /* At this point, the selection was successfully stored; ack it. */ | |
2f65feb6 | 518 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
5c3a351a | 519 | XFlush (display); |
2f65feb6 | 520 | UNBLOCK_INPUT; |
ede4db72 RS |
521 | } |
522 | else | |
523 | { | |
524 | /* Send an INCR selection. */ | |
d1f21a66 | 525 | struct prop_location *wait_object; |
ede4db72 | 526 | |
2f65feb6 RS |
527 | BLOCK_INPUT; |
528 | ||
7da64e5c | 529 | if (x_window_to_frame (window)) /* #### debug */ |
ede4db72 RS |
530 | error ("attempt to transfer an INCR to ourself!"); |
531 | #if 0 | |
532 | fprintf (stderr, "\nINCR %d\n", bytes_remaining); | |
533 | #endif | |
d1f21a66 RS |
534 | wait_object = expect_property_change (display, window, reply.property, |
535 | PropertyDelete); | |
ede4db72 | 536 | |
5c3a351a | 537 | XChangeProperty (display, window, reply.property, dpyinfo->Xatom_INCR, |
ede4db72 RS |
538 | 32, PropModeReplace, (unsigned char *) |
539 | &bytes_remaining, 1); | |
540 | XSelectInput (display, window, PropertyChangeMask); | |
541 | /* Tell 'em the INCR data is there... */ | |
542 | (void) XSendEvent (display, window, False, 0L, (XEvent *) &reply); | |
5c3a351a | 543 | XFlush (display); |
2f65feb6 | 544 | UNBLOCK_INPUT; |
ede4db72 RS |
545 | |
546 | /* First, wait for the requestor to ack by deleting the property. | |
547 | This can run random lisp code (process handlers) or signal. */ | |
d1f21a66 | 548 | wait_for_property_change (wait_object); |
ede4db72 RS |
549 | |
550 | while (bytes_remaining) | |
551 | { | |
552 | int i = ((bytes_remaining < max_bytes) | |
553 | ? bytes_remaining | |
554 | : max_bytes); | |
2f65feb6 RS |
555 | |
556 | BLOCK_INPUT; | |
557 | ||
d1f21a66 RS |
558 | wait_object |
559 | = expect_property_change (display, window, reply.property, | |
560 | PropertyDelete); | |
ede4db72 RS |
561 | #if 0 |
562 | fprintf (stderr," INCR adding %d\n", i); | |
563 | #endif | |
564 | /* Append the next chunk of data to the property. */ | |
565 | XChangeProperty (display, window, reply.property, type, format, | |
566 | PropModeAppend, data, i / format_bytes); | |
567 | bytes_remaining -= i; | |
568 | data += i; | |
5c3a351a | 569 | XFlush (display); |
2f65feb6 | 570 | UNBLOCK_INPUT; |
ede4db72 RS |
571 | |
572 | /* Now wait for the requestor to ack this chunk by deleting the | |
573 | property. This can run random lisp code or signal. | |
574 | */ | |
d1f21a66 | 575 | wait_for_property_change (wait_object); |
ede4db72 RS |
576 | } |
577 | /* Now write a zero-length chunk to the property to tell the requestor | |
578 | that we're done. */ | |
579 | #if 0 | |
580 | fprintf (stderr," INCR done\n"); | |
581 | #endif | |
2f65feb6 | 582 | BLOCK_INPUT; |
ede4db72 RS |
583 | if (! waiting_for_other_props_on_window (display, window)) |
584 | XSelectInput (display, window, 0L); | |
585 | ||
586 | XChangeProperty (display, window, reply.property, type, format, | |
587 | PropModeReplace, data, 0); | |
5c3a351a | 588 | XFlush (display); |
2f65feb6 | 589 | UNBLOCK_INPUT; |
ede4db72 | 590 | } |
ede4db72 RS |
591 | } |
592 | \f | |
593 | /* Handle a SelectionRequest event EVENT. | |
594 | This is called from keyboard.c when such an event is found in the queue. */ | |
595 | ||
596 | void | |
597 | x_handle_selection_request (event) | |
598 | struct input_event *event; | |
599 | { | |
600 | struct gcpro gcpro1, gcpro2, gcpro3; | |
9d2d1dd8 | 601 | Lisp_Object local_selection_data; |
ede4db72 | 602 | Lisp_Object selection_symbol; |
9d2d1dd8 KH |
603 | Lisp_Object target_symbol; |
604 | Lisp_Object converted_selection; | |
ede4db72 | 605 | Time local_selection_time; |
9d2d1dd8 | 606 | Lisp_Object successful_p; |
ede4db72 | 607 | int count; |
5c3a351a RS |
608 | struct x_display_info *dpyinfo |
609 | = x_display_info_for_display (SELECTION_EVENT_DISPLAY (event)); | |
ede4db72 | 610 | |
9d2d1dd8 KH |
611 | local_selection_data = Qnil; |
612 | target_symbol = Qnil; | |
613 | converted_selection = Qnil; | |
614 | successful_p = Qnil; | |
615 | ||
ede4db72 RS |
616 | GCPRO3 (local_selection_data, converted_selection, target_symbol); |
617 | ||
5c3a351a RS |
618 | selection_symbol = x_atom_to_symbol (dpyinfo, |
619 | SELECTION_EVENT_DISPLAY (event), | |
ede4db72 RS |
620 | SELECTION_EVENT_SELECTION (event)); |
621 | ||
622 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
ede4db72 RS |
623 | |
624 | if (NILP (local_selection_data)) | |
625 | { | |
626 | /* Someone asked for the selection, but we don't have it any more. | |
627 | */ | |
628 | x_decline_selection_request (event); | |
629 | goto DONE; | |
630 | } | |
631 | ||
632 | local_selection_time = (Time) | |
633 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
634 | ||
635 | if (SELECTION_EVENT_TIME (event) != CurrentTime | |
7da64e5c | 636 | && local_selection_time > SELECTION_EVENT_TIME (event)) |
ede4db72 RS |
637 | { |
638 | /* Someone asked for the selection, and we have one, but not the one | |
639 | they're looking for. | |
640 | */ | |
641 | x_decline_selection_request (event); | |
642 | goto DONE; | |
643 | } | |
644 | ||
645 | count = specpdl_ptr - specpdl; | |
646 | x_selection_current_request = event; | |
647 | record_unwind_protect (x_selection_request_lisp_error, Qnil); | |
648 | ||
5c3a351a | 649 | target_symbol = x_atom_to_symbol (dpyinfo, SELECTION_EVENT_DISPLAY (event), |
ede4db72 RS |
650 | SELECTION_EVENT_TARGET (event)); |
651 | ||
652 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
653 | if (EQ (target_symbol, QMULTIPLE)) | |
654 | target_symbol = fetch_multiple_target (event); | |
655 | #endif | |
656 | ||
657 | /* Convert lisp objects back into binary data */ | |
658 | ||
659 | converted_selection | |
660 | = x_get_local_selection (selection_symbol, target_symbol); | |
661 | ||
662 | if (! NILP (converted_selection)) | |
663 | { | |
664 | unsigned char *data; | |
665 | unsigned int size; | |
666 | int format; | |
667 | Atom type; | |
aca39f42 RS |
668 | int nofree; |
669 | ||
2f65feb6 RS |
670 | lisp_data_to_selection_data (SELECTION_EVENT_DISPLAY (event), |
671 | converted_selection, | |
aca39f42 | 672 | &data, &type, &size, &format, &nofree); |
ede4db72 RS |
673 | |
674 | x_reply_selection_request (event, format, data, size, type); | |
675 | successful_p = Qt; | |
676 | ||
677 | /* Indicate we have successfully processed this event. */ | |
7da64e5c | 678 | x_selection_current_request = 0; |
ede4db72 | 679 | |
aca39f42 RS |
680 | if (!nofree) |
681 | xfree (data); | |
ede4db72 RS |
682 | } |
683 | unbind_to (count, Qnil); | |
684 | ||
685 | DONE: | |
686 | ||
687 | UNGCPRO; | |
688 | ||
689 | /* Let random lisp code notice that the selection has been asked for. */ | |
690 | { | |
9d2d1dd8 KH |
691 | Lisp_Object rest; |
692 | rest = Vx_sent_selection_hooks; | |
ede4db72 RS |
693 | if (!EQ (rest, Qunbound)) |
694 | for (; CONSP (rest); rest = Fcdr (rest)) | |
695 | call3 (Fcar (rest), selection_symbol, target_symbol, successful_p); | |
696 | } | |
697 | } | |
698 | \f | |
699 | /* Handle a SelectionClear event EVENT, which indicates that some other | |
700 | client cleared out our previously asserted selection. | |
701 | This is called from keyboard.c when such an event is found in the queue. */ | |
702 | ||
703 | void | |
704 | x_handle_selection_clear (event) | |
705 | struct input_event *event; | |
706 | { | |
707 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
708 | Atom selection = SELECTION_EVENT_SELECTION (event); | |
709 | Time changed_owner_time = SELECTION_EVENT_TIME (event); | |
710 | ||
711 | Lisp_Object selection_symbol, local_selection_data; | |
712 | Time local_selection_time; | |
5c3a351a | 713 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 714 | |
5c3a351a | 715 | selection_symbol = x_atom_to_symbol (dpyinfo, display, selection); |
ede4db72 RS |
716 | |
717 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
718 | ||
719 | /* Well, we already believe that we don't own it, so that's just fine. */ | |
720 | if (NILP (local_selection_data)) return; | |
721 | ||
722 | local_selection_time = (Time) | |
723 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
724 | ||
725 | /* This SelectionClear is for a selection that we no longer own, so we can | |
726 | disregard it. (That is, we have reasserted the selection since this | |
727 | request was generated.) */ | |
728 | ||
729 | if (changed_owner_time != CurrentTime | |
730 | && local_selection_time > changed_owner_time) | |
731 | return; | |
732 | ||
733 | /* Otherwise, we're really honest and truly being told to drop it. | |
734 | Don't use Fdelq as that may QUIT;. */ | |
735 | ||
736 | if (EQ (local_selection_data, Fcar (Vselection_alist))) | |
737 | Vselection_alist = Fcdr (Vselection_alist); | |
738 | else | |
739 | { | |
740 | Lisp_Object rest; | |
741 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
742 | if (EQ (local_selection_data, Fcar (XCONS (rest)->cdr))) | |
743 | { | |
744 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
745 | break; | |
746 | } | |
747 | } | |
748 | ||
749 | /* Let random lisp code notice that the selection has been stolen. */ | |
750 | ||
751 | { | |
d1f21a66 RS |
752 | Lisp_Object rest; |
753 | rest = Vx_lost_selection_hooks; | |
ede4db72 | 754 | if (!EQ (rest, Qunbound)) |
d1f21a66 RS |
755 | { |
756 | for (; CONSP (rest); rest = Fcdr (rest)) | |
757 | call1 (Fcar (rest), selection_symbol); | |
7c6b2ea4 | 758 | prepare_menu_bars (); |
d1f21a66 RS |
759 | redisplay_preserve_echo_area (); |
760 | } | |
ede4db72 RS |
761 | } |
762 | } | |
763 | ||
118bd841 RS |
764 | /* Clear all selections that were made from frame F. |
765 | We do this when about to delete a frame. */ | |
766 | ||
767 | void | |
768 | x_clear_frame_selections (f) | |
769 | FRAME_PTR f; | |
770 | { | |
771 | Lisp_Object frame; | |
772 | Lisp_Object rest; | |
773 | ||
90851bbe | 774 | XSETFRAME (frame, f); |
118bd841 RS |
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 | while (!NILP (Vselection_alist) | |
780 | && EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (Vselection_alist))))))) | |
781 | { | |
782 | /* Let random Lisp code notice that the selection has been stolen. */ | |
783 | Lisp_Object hooks, selection_symbol; | |
784 | ||
785 | hooks = Vx_lost_selection_hooks; | |
786 | selection_symbol = Fcar (Vselection_alist); | |
787 | ||
788 | if (!EQ (hooks, Qunbound)) | |
789 | { | |
790 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
791 | call1 (Fcar (hooks), selection_symbol); | |
792 | redisplay_preserve_echo_area (); | |
793 | } | |
794 | ||
795 | Vselection_alist = Fcdr (Vselection_alist); | |
796 | } | |
797 | ||
798 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
799 | if (EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (XCONS (rest)->cdr))))))) | |
800 | { | |
801 | /* Let random Lisp code notice that the selection has been stolen. */ | |
802 | Lisp_Object hooks, selection_symbol; | |
803 | ||
804 | hooks = Vx_lost_selection_hooks; | |
805 | selection_symbol = Fcar (XCONS (rest)->cdr); | |
806 | ||
807 | if (!EQ (hooks, Qunbound)) | |
808 | { | |
809 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
810 | call1 (Fcar (hooks), selection_symbol); | |
811 | redisplay_preserve_echo_area (); | |
812 | } | |
813 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
814 | break; | |
815 | } | |
816 | } | |
ede4db72 | 817 | \f |
ede4db72 RS |
818 | /* Nonzero if any properties for DISPLAY and WINDOW |
819 | are on the list of what we are waiting for. */ | |
820 | ||
821 | static int | |
822 | waiting_for_other_props_on_window (display, window) | |
823 | Display *display; | |
824 | Window window; | |
825 | { | |
826 | struct prop_location *rest = property_change_wait_list; | |
827 | while (rest) | |
828 | if (rest->display == display && rest->window == window) | |
829 | return 1; | |
830 | else | |
831 | rest = rest->next; | |
832 | return 0; | |
833 | } | |
834 | ||
835 | /* Add an entry to the list of property changes we are waiting for. | |
836 | DISPLAY, WINDOW, PROPERTY, STATE describe what we will wait for. | |
837 | The return value is a number that uniquely identifies | |
838 | this awaited property change. */ | |
839 | ||
d1f21a66 | 840 | static struct prop_location * |
ede4db72 RS |
841 | expect_property_change (display, window, property, state) |
842 | Display *display; | |
843 | Window window; | |
844 | Lisp_Object property; | |
845 | int state; | |
846 | { | |
847 | struct prop_location *pl | |
848 | = (struct prop_location *) xmalloc (sizeof (struct prop_location)); | |
2f65feb6 | 849 | pl->identifier = ++prop_location_identifier; |
ede4db72 RS |
850 | pl->display = display; |
851 | pl->window = window; | |
852 | pl->property = property; | |
853 | pl->desired_state = state; | |
854 | pl->next = property_change_wait_list; | |
d1f21a66 | 855 | pl->arrived = 0; |
ede4db72 | 856 | property_change_wait_list = pl; |
d1f21a66 | 857 | return pl; |
ede4db72 RS |
858 | } |
859 | ||
860 | /* Delete an entry from the list of property changes we are waiting for. | |
2f65feb6 | 861 | IDENTIFIER is the number that uniquely identifies the entry. */ |
ede4db72 RS |
862 | |
863 | static void | |
d1f21a66 RS |
864 | unexpect_property_change (location) |
865 | struct prop_location *location; | |
ede4db72 RS |
866 | { |
867 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
868 | while (rest) | |
869 | { | |
d1f21a66 | 870 | if (rest == location) |
ede4db72 RS |
871 | { |
872 | if (prev) | |
873 | prev->next = rest->next; | |
874 | else | |
875 | property_change_wait_list = rest->next; | |
876 | xfree (rest); | |
877 | return; | |
878 | } | |
879 | prev = rest; | |
880 | rest = rest->next; | |
881 | } | |
882 | } | |
883 | ||
2f65feb6 RS |
884 | /* Remove the property change expectation element for IDENTIFIER. */ |
885 | ||
886 | static Lisp_Object | |
887 | wait_for_property_change_unwind (identifierval) | |
888 | Lisp_Object identifierval; | |
889 | { | |
c4898489 KH |
890 | unexpect_property_change ((struct prop_location *) |
891 | (XFASTINT (XCONS (identifierval)->car) << 16 | |
892 | | XFASTINT (XCONS (identifierval)->cdr))); | |
2f65feb6 RS |
893 | } |
894 | ||
ede4db72 | 895 | /* Actually wait for a property change. |
2f65feb6 | 896 | IDENTIFIER should be the value that expect_property_change returned. */ |
ede4db72 RS |
897 | |
898 | static void | |
d1f21a66 RS |
899 | wait_for_property_change (location) |
900 | struct prop_location *location; | |
ede4db72 | 901 | { |
2f65feb6 RS |
902 | int secs, usecs; |
903 | int count = specpdl_ptr - specpdl; | |
d1f21a66 RS |
904 | Lisp_Object tem; |
905 | ||
c4898489 KH |
906 | tem = Fcons (Qnil, Qnil); |
907 | XSETFASTINT (XCONS (tem)->car, (EMACS_UINT)location >> 16); | |
908 | XSETFASTINT (XCONS (tem)->cdr, (EMACS_UINT)location & 0xffff); | |
2f65feb6 RS |
909 | |
910 | /* Make sure to do unexpect_property_change if we quit or err. */ | |
d1f21a66 | 911 | record_unwind_protect (wait_for_property_change_unwind, tem); |
2f65feb6 | 912 | |
ede4db72 | 913 | XCONS (property_change_reply)->car = Qnil; |
2f65feb6 | 914 | |
d1f21a66 RS |
915 | if (! location->arrived) |
916 | { | |
917 | property_change_reply_object = location; | |
918 | secs = x_selection_timeout / 1000; | |
919 | usecs = (x_selection_timeout % 1000) * 1000; | |
920 | wait_reading_process_input (secs, usecs, property_change_reply, 0); | |
921 | ||
922 | if (NILP (XCONS (property_change_reply)->car)) | |
923 | error ("timed out waiting for property-notify event"); | |
924 | } | |
2f65feb6 RS |
925 | |
926 | unbind_to (count, Qnil); | |
ede4db72 RS |
927 | } |
928 | ||
929 | /* Called from XTread_socket in response to a PropertyNotify event. */ | |
930 | ||
931 | void | |
932 | x_handle_property_notify (event) | |
933 | XPropertyEvent *event; | |
934 | { | |
935 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
936 | while (rest) | |
937 | { | |
938 | if (rest->property == event->atom | |
939 | && rest->window == event->window | |
940 | && rest->display == event->display | |
941 | && rest->desired_state == event->state) | |
942 | { | |
943 | #if 0 | |
944 | fprintf (stderr, "Saw expected prop-%s on %s\n", | |
945 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a | 946 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, event->display, |
ede4db72 RS |
947 | event->atom)) |
948 | ->name->data); | |
949 | #endif | |
950 | ||
d1f21a66 RS |
951 | rest->arrived = 1; |
952 | ||
ede4db72 RS |
953 | /* If this is the one wait_for_property_change is waiting for, |
954 | tell it to wake up. */ | |
d1f21a66 | 955 | if (rest == property_change_reply_object) |
ede4db72 RS |
956 | XCONS (property_change_reply)->car = Qt; |
957 | ||
958 | if (prev) | |
959 | prev->next = rest->next; | |
960 | else | |
961 | property_change_wait_list = rest->next; | |
962 | xfree (rest); | |
963 | return; | |
964 | } | |
965 | prev = rest; | |
966 | rest = rest->next; | |
967 | } | |
968 | #if 0 | |
969 | fprintf (stderr, "Saw UNexpected prop-%s on %s\n", | |
970 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a RS |
971 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, |
972 | event->display, event->atom)) | |
ede4db72 RS |
973 | ->name->data); |
974 | #endif | |
975 | } | |
976 | ||
977 | ||
978 | \f | |
979 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
980 | ||
981 | static Lisp_Object | |
982 | fetch_multiple_target (event) | |
983 | XSelectionRequestEvent *event; | |
984 | { | |
985 | Display *display = event->display; | |
986 | Window window = event->requestor; | |
987 | Atom target = event->target; | |
988 | Atom selection_atom = event->selection; | |
989 | int result; | |
990 | ||
991 | return | |
992 | Fcons (QMULTIPLE, | |
993 | x_get_window_property_as_lisp_data (display, window, target, | |
994 | QMULTIPLE, selection_atom)); | |
995 | } | |
996 | ||
997 | static Lisp_Object | |
998 | copy_multiple_data (obj) | |
999 | Lisp_Object obj; | |
1000 | { | |
1001 | Lisp_Object vec; | |
1002 | int i; | |
1003 | int size; | |
1004 | if (CONSP (obj)) | |
1005 | return Fcons (XCONS (obj)->car, copy_multiple_data (XCONS (obj)->cdr)); | |
1006 | ||
1007 | CHECK_VECTOR (obj, 0); | |
1008 | vec = Fmake_vector (size = XVECTOR (obj)->size, Qnil); | |
1009 | for (i = 0; i < size; i++) | |
1010 | { | |
1011 | Lisp_Object vec2 = XVECTOR (obj)->contents [i]; | |
1012 | CHECK_VECTOR (vec2, 0); | |
1013 | if (XVECTOR (vec2)->size != 2) | |
1014 | /* ??? Confusing error message */ | |
1015 | Fsignal (Qerror, Fcons (build_string ("vectors must be of length 2"), | |
1016 | Fcons (vec2, Qnil))); | |
1017 | XVECTOR (vec)->contents [i] = Fmake_vector (2, Qnil); | |
1018 | XVECTOR (XVECTOR (vec)->contents [i])->contents [0] | |
1019 | = XVECTOR (vec2)->contents [0]; | |
1020 | XVECTOR (XVECTOR (vec)->contents [i])->contents [1] | |
1021 | = XVECTOR (vec2)->contents [1]; | |
1022 | } | |
1023 | return vec; | |
1024 | } | |
1025 | ||
1026 | #endif | |
1027 | ||
1028 | \f | |
1029 | /* Variables for communication with x_handle_selection_notify. */ | |
1030 | static Atom reading_which_selection; | |
1031 | static Lisp_Object reading_selection_reply; | |
1032 | static Window reading_selection_window; | |
1033 | ||
1034 | /* Do protocol to read selection-data from the server. | |
1035 | Converts this to Lisp data and returns it. */ | |
1036 | ||
1037 | static Lisp_Object | |
1038 | x_get_foreign_selection (selection_symbol, target_type) | |
1039 | Lisp_Object selection_symbol, target_type; | |
1040 | { | |
7da64e5c | 1041 | Window requestor_window = FRAME_X_WINDOW (selected_frame); |
3834c318 | 1042 | Display *display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1043 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
7da64e5c | 1044 | Time requestor_time = last_event_timestamp; |
5c3a351a RS |
1045 | Atom target_property = dpyinfo->Xatom_EMACS_TMP; |
1046 | Atom selection_atom = symbol_to_x_atom (dpyinfo, display, selection_symbol); | |
ede4db72 | 1047 | Atom type_atom; |
80da0190 | 1048 | int secs, usecs; |
ede4db72 RS |
1049 | |
1050 | if (CONSP (target_type)) | |
5c3a351a | 1051 | type_atom = symbol_to_x_atom (dpyinfo, display, XCONS (target_type)->car); |
ede4db72 | 1052 | else |
5c3a351a | 1053 | type_atom = symbol_to_x_atom (dpyinfo, display, target_type); |
ede4db72 RS |
1054 | |
1055 | BLOCK_INPUT; | |
a7b24d46 | 1056 | x_catch_errors (display); |
ede4db72 RS |
1057 | XConvertSelection (display, selection_atom, type_atom, target_property, |
1058 | requestor_window, requestor_time); | |
5c3a351a | 1059 | XFlush (display); |
ede4db72 RS |
1060 | |
1061 | /* Prepare to block until the reply has been read. */ | |
1062 | reading_selection_window = requestor_window; | |
1063 | reading_which_selection = selection_atom; | |
1064 | XCONS (reading_selection_reply)->car = Qnil; | |
3834c318 | 1065 | x_start_queuing_selection_requests (selected_frame); |
ede4db72 RS |
1066 | UNBLOCK_INPUT; |
1067 | ||
80da0190 RS |
1068 | /* This allows quits. Also, don't wait forever. */ |
1069 | secs = x_selection_timeout / 1000; | |
1070 | usecs = (x_selection_timeout % 1000) * 1000; | |
1071 | wait_reading_process_input (secs, usecs, reading_selection_reply, 0); | |
ede4db72 | 1072 | |
7c6b2ea4 | 1073 | BLOCK_INPUT; |
a7b24d46 RS |
1074 | x_check_errors (display, "Cannot get selection: %s"); |
1075 | x_uncatch_errors (display); | |
3834c318 | 1076 | x_stop_queuing_selection_requests (selected_frame); |
7c6b2ea4 RS |
1077 | UNBLOCK_INPUT; |
1078 | ||
ede4db72 RS |
1079 | if (NILP (XCONS (reading_selection_reply)->car)) |
1080 | error ("timed out waiting for reply from selection owner"); | |
1081 | ||
1082 | /* Otherwise, the selection is waiting for us on the requested property. */ | |
1083 | return | |
1084 | x_get_window_property_as_lisp_data (display, requestor_window, | |
1085 | target_property, target_type, | |
1086 | selection_atom); | |
1087 | } | |
1088 | \f | |
1089 | /* Subroutines of x_get_window_property_as_lisp_data */ | |
1090 | ||
1091 | static void | |
1092 | x_get_window_property (display, window, property, data_ret, bytes_ret, | |
1093 | actual_type_ret, actual_format_ret, actual_size_ret, | |
1094 | delete_p) | |
1095 | Display *display; | |
1096 | Window window; | |
1097 | Atom property; | |
1098 | unsigned char **data_ret; | |
1099 | int *bytes_ret; | |
1100 | Atom *actual_type_ret; | |
1101 | int *actual_format_ret; | |
1102 | unsigned long *actual_size_ret; | |
1103 | int delete_p; | |
1104 | { | |
1105 | int total_size; | |
1106 | unsigned long bytes_remaining; | |
1107 | int offset = 0; | |
1108 | unsigned char *tmp_data = 0; | |
1109 | int result; | |
1110 | int buffer_size = SELECTION_QUANTUM (display); | |
1111 | if (buffer_size > MAX_SELECTION_QUANTUM) buffer_size = MAX_SELECTION_QUANTUM; | |
1112 | ||
1113 | BLOCK_INPUT; | |
1114 | /* First probe the thing to find out how big it is. */ | |
1115 | result = XGetWindowProperty (display, window, property, | |
1116 | 0, 0, False, AnyPropertyType, | |
1117 | actual_type_ret, actual_format_ret, | |
1118 | actual_size_ret, | |
1119 | &bytes_remaining, &tmp_data); | |
ede4db72 RS |
1120 | if (result != Success) |
1121 | { | |
2f65feb6 | 1122 | UNBLOCK_INPUT; |
ede4db72 RS |
1123 | *data_ret = 0; |
1124 | *bytes_ret = 0; | |
1125 | return; | |
1126 | } | |
2f65feb6 | 1127 | xfree ((char *) tmp_data); |
ede4db72 RS |
1128 | |
1129 | if (*actual_type_ret == None || *actual_format_ret == 0) | |
1130 | { | |
2f65feb6 | 1131 | UNBLOCK_INPUT; |
ede4db72 RS |
1132 | return; |
1133 | } | |
1134 | ||
1135 | total_size = bytes_remaining + 1; | |
1136 | *data_ret = (unsigned char *) xmalloc (total_size); | |
1137 | ||
1138 | /* Now read, until weve gotten it all. */ | |
ede4db72 RS |
1139 | while (bytes_remaining) |
1140 | { | |
1141 | #if 0 | |
1142 | int last = bytes_remaining; | |
1143 | #endif | |
1144 | result | |
1145 | = XGetWindowProperty (display, window, property, | |
1146 | offset/4, buffer_size/4, | |
2f65feb6 | 1147 | False, |
ede4db72 RS |
1148 | AnyPropertyType, |
1149 | actual_type_ret, actual_format_ret, | |
1150 | actual_size_ret, &bytes_remaining, &tmp_data); | |
1151 | #if 0 | |
1152 | fprintf (stderr, "<< read %d\n", last-bytes_remaining); | |
1153 | #endif | |
1154 | /* If this doesn't return Success at this point, it means that | |
1155 | some clod deleted the selection while we were in the midst of | |
1156 | reading it. Deal with that, I guess.... | |
1157 | */ | |
1158 | if (result != Success) break; | |
1159 | *actual_size_ret *= *actual_format_ret / 8; | |
1160 | bcopy (tmp_data, (*data_ret) + offset, *actual_size_ret); | |
1161 | offset += *actual_size_ret; | |
2f65feb6 | 1162 | xfree ((char *) tmp_data); |
ede4db72 | 1163 | } |
2f65feb6 | 1164 | |
5c3a351a | 1165 | XFlush (display); |
ede4db72 RS |
1166 | UNBLOCK_INPUT; |
1167 | *bytes_ret = offset; | |
1168 | } | |
1169 | \f | |
1170 | static void | |
1171 | receive_incremental_selection (display, window, property, target_type, | |
1172 | min_size_bytes, data_ret, size_bytes_ret, | |
1173 | type_ret, format_ret, size_ret) | |
1174 | Display *display; | |
1175 | Window window; | |
1176 | Atom property; | |
1177 | Lisp_Object target_type; /* for error messages only */ | |
1178 | unsigned int min_size_bytes; | |
1179 | unsigned char **data_ret; | |
1180 | int *size_bytes_ret; | |
1181 | Atom *type_ret; | |
1182 | unsigned long *size_ret; | |
1183 | int *format_ret; | |
1184 | { | |
1185 | int offset = 0; | |
d1f21a66 | 1186 | struct prop_location *wait_object; |
ede4db72 RS |
1187 | *size_bytes_ret = min_size_bytes; |
1188 | *data_ret = (unsigned char *) xmalloc (*size_bytes_ret); | |
1189 | #if 0 | |
1190 | fprintf (stderr, "\nread INCR %d\n", min_size_bytes); | |
1191 | #endif | |
2f65feb6 RS |
1192 | |
1193 | /* At this point, we have read an INCR property. | |
1194 | Delete the property to ack it. | |
1195 | (But first, prepare to receive the next event in this handshake.) | |
ede4db72 RS |
1196 | |
1197 | Now, we must loop, waiting for the sending window to put a value on | |
1198 | that property, then reading the property, then deleting it to ack. | |
1199 | We are done when the sender places a property of length 0. | |
1200 | */ | |
2f65feb6 RS |
1201 | BLOCK_INPUT; |
1202 | XSelectInput (display, window, STANDARD_EVENT_SET | PropertyChangeMask); | |
1203 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1204 | wait_object = expect_property_change (display, window, property, |
1205 | PropertyNewValue); | |
5c3a351a | 1206 | XFlush (display); |
2f65feb6 RS |
1207 | UNBLOCK_INPUT; |
1208 | ||
ede4db72 RS |
1209 | while (1) |
1210 | { | |
1211 | unsigned char *tmp_data; | |
1212 | int tmp_size_bytes; | |
d1f21a66 | 1213 | wait_for_property_change (wait_object); |
ede4db72 RS |
1214 | /* expect it again immediately, because x_get_window_property may |
1215 | .. no it wont, I dont get it. | |
1216 | .. Ok, I get it now, the Xt code that implements INCR is broken. | |
1217 | */ | |
ede4db72 RS |
1218 | x_get_window_property (display, window, property, |
1219 | &tmp_data, &tmp_size_bytes, | |
1220 | type_ret, format_ret, size_ret, 1); | |
1221 | ||
1222 | if (tmp_size_bytes == 0) /* we're done */ | |
1223 | { | |
1224 | #if 0 | |
1225 | fprintf (stderr, " read INCR done\n"); | |
1226 | #endif | |
2f65feb6 RS |
1227 | if (! waiting_for_other_props_on_window (display, window)) |
1228 | XSelectInput (display, window, STANDARD_EVENT_SET); | |
d1f21a66 | 1229 | unexpect_property_change (wait_object); |
ede4db72 RS |
1230 | if (tmp_data) xfree (tmp_data); |
1231 | break; | |
1232 | } | |
2f65feb6 RS |
1233 | |
1234 | BLOCK_INPUT; | |
1235 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1236 | wait_object = expect_property_change (display, window, property, |
1237 | PropertyNewValue); | |
5c3a351a | 1238 | XFlush (display); |
2f65feb6 RS |
1239 | UNBLOCK_INPUT; |
1240 | ||
ede4db72 RS |
1241 | #if 0 |
1242 | fprintf (stderr, " read INCR %d\n", tmp_size_bytes); | |
1243 | #endif | |
1244 | if (*size_bytes_ret < offset + tmp_size_bytes) | |
1245 | { | |
1246 | #if 0 | |
1247 | fprintf (stderr, " read INCR realloc %d -> %d\n", | |
1248 | *size_bytes_ret, offset + tmp_size_bytes); | |
1249 | #endif | |
1250 | *size_bytes_ret = offset + tmp_size_bytes; | |
1251 | *data_ret = (unsigned char *) xrealloc (*data_ret, *size_bytes_ret); | |
1252 | } | |
018cfa07 | 1253 | bcopy (tmp_data, (*data_ret) + offset, tmp_size_bytes); |
ede4db72 RS |
1254 | offset += tmp_size_bytes; |
1255 | xfree (tmp_data); | |
1256 | } | |
1257 | } | |
1258 | \f | |
1259 | /* Once a requested selection is "ready" (we got a SelectionNotify event), | |
1260 | fetch value from property PROPERTY of X window WINDOW on display DISPLAY. | |
1261 | TARGET_TYPE and SELECTION_ATOM are used in error message if this fails. */ | |
1262 | ||
1263 | static Lisp_Object | |
1264 | x_get_window_property_as_lisp_data (display, window, property, target_type, | |
1265 | selection_atom) | |
1266 | Display *display; | |
1267 | Window window; | |
1268 | Atom property; | |
1269 | Lisp_Object target_type; /* for error messages only */ | |
1270 | Atom selection_atom; /* for error messages only */ | |
1271 | { | |
1272 | Atom actual_type; | |
1273 | int actual_format; | |
1274 | unsigned long actual_size; | |
1275 | unsigned char *data = 0; | |
1276 | int bytes = 0; | |
1277 | Lisp_Object val; | |
5c3a351a | 1278 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 RS |
1279 | |
1280 | x_get_window_property (display, window, property, &data, &bytes, | |
1281 | &actual_type, &actual_format, &actual_size, 1); | |
1282 | if (! data) | |
1283 | { | |
1284 | int there_is_a_selection_owner; | |
1285 | BLOCK_INPUT; | |
1286 | there_is_a_selection_owner | |
1287 | = XGetSelectionOwner (display, selection_atom); | |
1288 | UNBLOCK_INPUT; | |
1289 | while (1) /* Note debugger can no longer return, so this is obsolete */ | |
1290 | Fsignal (Qerror, | |
1291 | there_is_a_selection_owner ? | |
1292 | Fcons (build_string ("selection owner couldn't convert"), | |
1293 | actual_type | |
1294 | ? Fcons (target_type, | |
5c3a351a RS |
1295 | Fcons (x_atom_to_symbol (dpyinfo, display, |
1296 | actual_type), | |
ede4db72 RS |
1297 | Qnil)) |
1298 | : Fcons (target_type, Qnil)) | |
1299 | : Fcons (build_string ("no selection"), | |
5c3a351a RS |
1300 | Fcons (x_atom_to_symbol (dpyinfo, display, |
1301 | selection_atom), | |
ede4db72 RS |
1302 | Qnil))); |
1303 | } | |
1304 | ||
5c3a351a | 1305 | if (actual_type == dpyinfo->Xatom_INCR) |
ede4db72 RS |
1306 | { |
1307 | /* That wasn't really the data, just the beginning. */ | |
1308 | ||
1309 | unsigned int min_size_bytes = * ((unsigned int *) data); | |
1310 | BLOCK_INPUT; | |
1311 | XFree ((char *) data); | |
1312 | UNBLOCK_INPUT; | |
1313 | receive_incremental_selection (display, window, property, target_type, | |
1314 | min_size_bytes, &data, &bytes, | |
1315 | &actual_type, &actual_format, | |
1316 | &actual_size); | |
1317 | } | |
1318 | ||
2f65feb6 RS |
1319 | BLOCK_INPUT; |
1320 | XDeleteProperty (display, window, property); | |
5c3a351a | 1321 | XFlush (display); |
2f65feb6 RS |
1322 | UNBLOCK_INPUT; |
1323 | ||
ede4db72 RS |
1324 | /* It's been read. Now convert it to a lisp object in some semi-rational |
1325 | manner. */ | |
1326 | val = selection_data_to_lisp_data (display, data, bytes, | |
1327 | actual_type, actual_format); | |
1328 | ||
1329 | xfree ((char *) data); | |
1330 | return val; | |
1331 | } | |
1332 | \f | |
1333 | /* These functions convert from the selection data read from the server into | |
1334 | something that we can use from Lisp, and vice versa. | |
1335 | ||
1336 | Type: Format: Size: Lisp Type: | |
1337 | ----- ------- ----- ----------- | |
1338 | * 8 * String | |
1339 | ATOM 32 1 Symbol | |
1340 | ATOM 32 > 1 Vector of Symbols | |
1341 | * 16 1 Integer | |
1342 | * 16 > 1 Vector of Integers | |
1343 | * 32 1 if <=16 bits: Integer | |
1344 | if > 16 bits: Cons of top16, bot16 | |
1345 | * 32 > 1 Vector of the above | |
1346 | ||
1347 | When converting a Lisp number to C, it is assumed to be of format 16 if | |
1348 | it is an integer, and of format 32 if it is a cons of two integers. | |
1349 | ||
1350 | When converting a vector of numbers from Lisp to C, it is assumed to be | |
1351 | of format 16 if every element in the vector is an integer, and is assumed | |
1352 | to be of format 32 if any element is a cons of two integers. | |
1353 | ||
1354 | When converting an object to C, it may be of the form (SYMBOL . <data>) | |
1355 | where SYMBOL is what we should claim that the type is. Format and | |
1356 | representation are as above. */ | |
1357 | ||
1358 | ||
1359 | ||
1360 | static Lisp_Object | |
1361 | selection_data_to_lisp_data (display, data, size, type, format) | |
1362 | Display *display; | |
1363 | unsigned char *data; | |
1364 | Atom type; | |
1365 | int size, format; | |
1366 | { | |
5c3a351a | 1367 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1368 | |
5c3a351a | 1369 | if (type == dpyinfo->Xatom_NULL) |
ede4db72 RS |
1370 | return QNULL; |
1371 | ||
1372 | /* Convert any 8-bit data to a string, for compactness. */ | |
1373 | else if (format == 8) | |
1374 | return make_string ((char *) data, size); | |
1375 | ||
1376 | /* Convert a single atom to a Lisp_Symbol. Convert a set of atoms to | |
1377 | a vector of symbols. | |
1378 | */ | |
1379 | else if (type == XA_ATOM) | |
1380 | { | |
1381 | int i; | |
1382 | if (size == sizeof (Atom)) | |
5c3a351a | 1383 | return x_atom_to_symbol (dpyinfo, display, *((Atom *) data)); |
ede4db72 RS |
1384 | else |
1385 | { | |
1386 | Lisp_Object v = Fmake_vector (size / sizeof (Atom), 0); | |
1387 | for (i = 0; i < size / sizeof (Atom); i++) | |
5c3a351a RS |
1388 | Faset (v, i, x_atom_to_symbol (dpyinfo, display, |
1389 | ((Atom *) data) [i])); | |
ede4db72 RS |
1390 | return v; |
1391 | } | |
1392 | } | |
1393 | ||
1394 | /* Convert a single 16 or small 32 bit number to a Lisp_Int. | |
1395 | If the number is > 16 bits, convert it to a cons of integers, | |
1396 | 16 bits in each half. | |
1397 | */ | |
1398 | else if (format == 32 && size == sizeof (long)) | |
1399 | return long_to_cons (((unsigned long *) data) [0]); | |
1400 | else if (format == 16 && size == sizeof (short)) | |
1401 | return make_number ((int) (((unsigned short *) data) [0])); | |
1402 | ||
1403 | /* Convert any other kind of data to a vector of numbers, represented | |
1404 | as above (as an integer, or a cons of two 16 bit integers.) | |
1405 | */ | |
1406 | else if (format == 16) | |
1407 | { | |
1408 | int i; | |
1409 | Lisp_Object v = Fmake_vector (size / 4, 0); | |
1410 | for (i = 0; i < size / 4; i++) | |
1411 | { | |
1412 | int j = (int) ((unsigned short *) data) [i]; | |
1413 | Faset (v, i, make_number (j)); | |
1414 | } | |
1415 | return v; | |
1416 | } | |
1417 | else | |
1418 | { | |
1419 | int i; | |
1420 | Lisp_Object v = Fmake_vector (size / 4, 0); | |
1421 | for (i = 0; i < size / 4; i++) | |
1422 | { | |
1423 | unsigned long j = ((unsigned long *) data) [i]; | |
1424 | Faset (v, i, long_to_cons (j)); | |
1425 | } | |
1426 | return v; | |
1427 | } | |
1428 | } | |
1429 | ||
1430 | ||
1431 | static void | |
1432 | lisp_data_to_selection_data (display, obj, | |
aca39f42 RS |
1433 | data_ret, type_ret, size_ret, |
1434 | format_ret, nofree_ret) | |
ede4db72 RS |
1435 | Display *display; |
1436 | Lisp_Object obj; | |
1437 | unsigned char **data_ret; | |
1438 | Atom *type_ret; | |
1439 | unsigned int *size_ret; | |
1440 | int *format_ret; | |
aca39f42 | 1441 | int *nofree_ret; |
ede4db72 RS |
1442 | { |
1443 | Lisp_Object type = Qnil; | |
5c3a351a | 1444 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
aca39f42 RS |
1445 | |
1446 | *nofree_ret = 0; | |
1447 | ||
ede4db72 RS |
1448 | if (CONSP (obj) && SYMBOLP (XCONS (obj)->car)) |
1449 | { | |
1450 | type = XCONS (obj)->car; | |
1451 | obj = XCONS (obj)->cdr; | |
1452 | if (CONSP (obj) && NILP (XCONS (obj)->cdr)) | |
1453 | obj = XCONS (obj)->car; | |
1454 | } | |
1455 | ||
1456 | if (EQ (obj, QNULL) || (EQ (type, QNULL))) | |
1457 | { /* This is not the same as declining */ | |
1458 | *format_ret = 32; | |
1459 | *size_ret = 0; | |
1460 | *data_ret = 0; | |
1461 | type = QNULL; | |
1462 | } | |
1463 | else if (STRINGP (obj)) | |
1464 | { | |
1465 | *format_ret = 8; | |
1466 | *size_ret = XSTRING (obj)->size; | |
aca39f42 RS |
1467 | *data_ret = XSTRING (obj)->data; |
1468 | *nofree_ret = 1; | |
ede4db72 RS |
1469 | if (NILP (type)) type = QSTRING; |
1470 | } | |
1471 | else if (SYMBOLP (obj)) | |
1472 | { | |
1473 | *format_ret = 32; | |
1474 | *size_ret = 1; | |
1475 | *data_ret = (unsigned char *) xmalloc (sizeof (Atom) + 1); | |
1476 | (*data_ret) [sizeof (Atom)] = 0; | |
5c3a351a | 1477 | (*(Atom **) data_ret) [0] = symbol_to_x_atom (dpyinfo, display, obj); |
ede4db72 RS |
1478 | if (NILP (type)) type = QATOM; |
1479 | } | |
7da64e5c | 1480 | else if (INTEGERP (obj) |
ede4db72 RS |
1481 | && XINT (obj) < 0xFFFF |
1482 | && XINT (obj) > -0xFFFF) | |
1483 | { | |
1484 | *format_ret = 16; | |
1485 | *size_ret = 1; | |
1486 | *data_ret = (unsigned char *) xmalloc (sizeof (short) + 1); | |
1487 | (*data_ret) [sizeof (short)] = 0; | |
1488 | (*(short **) data_ret) [0] = (short) XINT (obj); | |
1489 | if (NILP (type)) type = QINTEGER; | |
1490 | } | |
a87ed99c RS |
1491 | else if (INTEGERP (obj) |
1492 | || (CONSP (obj) && INTEGERP (XCONS (obj)->car) | |
1493 | && (INTEGERP (XCONS (obj)->cdr) | |
1494 | || (CONSP (XCONS (obj)->cdr) | |
1495 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car))))) | |
ede4db72 RS |
1496 | { |
1497 | *format_ret = 32; | |
1498 | *size_ret = 1; | |
1499 | *data_ret = (unsigned char *) xmalloc (sizeof (long) + 1); | |
1500 | (*data_ret) [sizeof (long)] = 0; | |
1501 | (*(unsigned long **) data_ret) [0] = cons_to_long (obj); | |
1502 | if (NILP (type)) type = QINTEGER; | |
1503 | } | |
1504 | else if (VECTORP (obj)) | |
1505 | { | |
1506 | /* Lisp_Vectors may represent a set of ATOMs; | |
1507 | a set of 16 or 32 bit INTEGERs; | |
1508 | or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...] | |
1509 | */ | |
1510 | int i; | |
1511 | ||
1512 | if (SYMBOLP (XVECTOR (obj)->contents [0])) | |
1513 | /* This vector is an ATOM set */ | |
1514 | { | |
1515 | if (NILP (type)) type = QATOM; | |
1516 | *size_ret = XVECTOR (obj)->size; | |
1517 | *format_ret = 32; | |
1518 | *data_ret = (unsigned char *) xmalloc ((*size_ret) * sizeof (Atom)); | |
1519 | for (i = 0; i < *size_ret; i++) | |
1520 | if (SYMBOLP (XVECTOR (obj)->contents [i])) | |
1521 | (*(Atom **) data_ret) [i] | |
5c3a351a | 1522 | = symbol_to_x_atom (dpyinfo, display, XVECTOR (obj)->contents [i]); |
ede4db72 RS |
1523 | else |
1524 | Fsignal (Qerror, /* Qselection_error */ | |
1525 | Fcons (build_string | |
1526 | ("all elements of selection vector must have same type"), | |
1527 | Fcons (obj, Qnil))); | |
1528 | } | |
1529 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1530 | else if (VECTORP (XVECTOR (obj)->contents [0])) | |
1531 | /* This vector is an ATOM_PAIR set */ | |
1532 | { | |
1533 | if (NILP (type)) type = QATOM_PAIR; | |
1534 | *size_ret = XVECTOR (obj)->size; | |
1535 | *format_ret = 32; | |
1536 | *data_ret = (unsigned char *) | |
1537 | xmalloc ((*size_ret) * sizeof (Atom) * 2); | |
1538 | for (i = 0; i < *size_ret; i++) | |
1539 | if (VECTORP (XVECTOR (obj)->contents [i])) | |
1540 | { | |
1541 | Lisp_Object pair = XVECTOR (obj)->contents [i]; | |
1542 | if (XVECTOR (pair)->size != 2) | |
1543 | Fsignal (Qerror, | |
1544 | Fcons (build_string | |
1545 | ("elements of the vector must be vectors of exactly two elements"), | |
1546 | Fcons (pair, Qnil))); | |
1547 | ||
1548 | (*(Atom **) data_ret) [i * 2] | |
5c3a351a RS |
1549 | = symbol_to_x_atom (dpyinfo, display, |
1550 | XVECTOR (pair)->contents [0]); | |
ede4db72 | 1551 | (*(Atom **) data_ret) [(i * 2) + 1] |
5c3a351a RS |
1552 | = symbol_to_x_atom (dpyinfo, display, |
1553 | XVECTOR (pair)->contents [1]); | |
ede4db72 RS |
1554 | } |
1555 | else | |
1556 | Fsignal (Qerror, | |
1557 | Fcons (build_string | |
1558 | ("all elements of the vector must be of the same type"), | |
1559 | Fcons (obj, Qnil))); | |
1560 | ||
1561 | } | |
1562 | #endif | |
1563 | else | |
1564 | /* This vector is an INTEGER set, or something like it */ | |
1565 | { | |
1566 | *size_ret = XVECTOR (obj)->size; | |
1567 | if (NILP (type)) type = QINTEGER; | |
1568 | *format_ret = 16; | |
1569 | for (i = 0; i < *size_ret; i++) | |
1570 | if (CONSP (XVECTOR (obj)->contents [i])) | |
1571 | *format_ret = 32; | |
7da64e5c | 1572 | else if (!INTEGERP (XVECTOR (obj)->contents [i])) |
ede4db72 RS |
1573 | Fsignal (Qerror, /* Qselection_error */ |
1574 | Fcons (build_string | |
1575 | ("elements of selection vector must be integers or conses of integers"), | |
1576 | Fcons (obj, Qnil))); | |
1577 | ||
1578 | *data_ret = (unsigned char *) xmalloc (*size_ret * (*format_ret/8)); | |
1579 | for (i = 0; i < *size_ret; i++) | |
1580 | if (*format_ret == 32) | |
1581 | (*((unsigned long **) data_ret)) [i] | |
1582 | = cons_to_long (XVECTOR (obj)->contents [i]); | |
1583 | else | |
1584 | (*((unsigned short **) data_ret)) [i] | |
1585 | = (unsigned short) cons_to_long (XVECTOR (obj)->contents [i]); | |
1586 | } | |
1587 | } | |
1588 | else | |
1589 | Fsignal (Qerror, /* Qselection_error */ | |
1590 | Fcons (build_string ("unrecognised selection data"), | |
1591 | Fcons (obj, Qnil))); | |
1592 | ||
5c3a351a | 1593 | *type_ret = symbol_to_x_atom (dpyinfo, display, type); |
ede4db72 RS |
1594 | } |
1595 | ||
1596 | static Lisp_Object | |
1597 | clean_local_selection_data (obj) | |
1598 | Lisp_Object obj; | |
1599 | { | |
1600 | if (CONSP (obj) | |
7da64e5c | 1601 | && INTEGERP (XCONS (obj)->car) |
ede4db72 | 1602 | && CONSP (XCONS (obj)->cdr) |
7da64e5c | 1603 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car) |
ede4db72 RS |
1604 | && NILP (XCONS (XCONS (obj)->cdr)->cdr)) |
1605 | obj = Fcons (XCONS (obj)->car, XCONS (obj)->cdr); | |
1606 | ||
1607 | if (CONSP (obj) | |
7da64e5c RS |
1608 | && INTEGERP (XCONS (obj)->car) |
1609 | && INTEGERP (XCONS (obj)->cdr)) | |
ede4db72 RS |
1610 | { |
1611 | if (XINT (XCONS (obj)->car) == 0) | |
1612 | return XCONS (obj)->cdr; | |
1613 | if (XINT (XCONS (obj)->car) == -1) | |
1614 | return make_number (- XINT (XCONS (obj)->cdr)); | |
1615 | } | |
1616 | if (VECTORP (obj)) | |
1617 | { | |
1618 | int i; | |
1619 | int size = XVECTOR (obj)->size; | |
1620 | Lisp_Object copy; | |
1621 | if (size == 1) | |
1622 | return clean_local_selection_data (XVECTOR (obj)->contents [0]); | |
1623 | copy = Fmake_vector (size, Qnil); | |
1624 | for (i = 0; i < size; i++) | |
1625 | XVECTOR (copy)->contents [i] | |
1626 | = clean_local_selection_data (XVECTOR (obj)->contents [i]); | |
1627 | return copy; | |
1628 | } | |
1629 | return obj; | |
1630 | } | |
1631 | \f | |
1632 | /* Called from XTread_socket to handle SelectionNotify events. | |
1633 | If it's the selection we are waiting for, stop waiting. */ | |
1634 | ||
1635 | void | |
1636 | x_handle_selection_notify (event) | |
1637 | XSelectionEvent *event; | |
1638 | { | |
1639 | if (event->requestor != reading_selection_window) | |
1640 | return; | |
1641 | if (event->selection != reading_which_selection) | |
1642 | return; | |
1643 | ||
1644 | XCONS (reading_selection_reply)->car = Qt; | |
1645 | } | |
1646 | ||
1647 | \f | |
1648 | DEFUN ("x-own-selection-internal", | |
1649 | Fx_own_selection_internal, Sx_own_selection_internal, | |
1650 | 2, 2, 0, | |
1651 | "Assert an X selection of the given TYPE with the given VALUE.\n\ | |
1652 | TYPE is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1653 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1654 | VALUE is typically a string, or a cons of two markers, but may be\n\ | |
a87ed99c | 1655 | anything that the functions on `selection-converter-alist' know about.") |
ede4db72 RS |
1656 | (selection_name, selection_value) |
1657 | Lisp_Object selection_name, selection_value; | |
1658 | { | |
703e0710 | 1659 | check_x (); |
ede4db72 RS |
1660 | CHECK_SYMBOL (selection_name, 0); |
1661 | if (NILP (selection_value)) error ("selection-value may not be nil."); | |
1662 | x_own_selection (selection_name, selection_value); | |
1663 | return selection_value; | |
1664 | } | |
1665 | ||
1666 | ||
1667 | /* Request the selection value from the owner. If we are the owner, | |
1668 | simply return our selection value. If we are not the owner, this | |
1669 | will block until all of the data has arrived. */ | |
1670 | ||
1671 | DEFUN ("x-get-selection-internal", | |
1672 | Fx_get_selection_internal, Sx_get_selection_internal, 2, 2, 0, | |
1673 | "Return text selected from some X window.\n\ | |
1674 | SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1675 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
a87ed99c | 1676 | TYPE is the type of data desired, typically `STRING'.") |
ede4db72 RS |
1677 | (selection_symbol, target_type) |
1678 | Lisp_Object selection_symbol, target_type; | |
1679 | { | |
1680 | Lisp_Object val = Qnil; | |
1681 | struct gcpro gcpro1, gcpro2; | |
1682 | GCPRO2 (target_type, val); /* we store newly consed data into these */ | |
703e0710 | 1683 | check_x (); |
ede4db72 RS |
1684 | CHECK_SYMBOL (selection_symbol, 0); |
1685 | ||
1686 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1687 | if (CONSP (target_type) | |
1688 | && XCONS (target_type)->car == QMULTIPLE) | |
1689 | { | |
1690 | CHECK_VECTOR (XCONS (target_type)->cdr, 0); | |
1691 | /* So we don't destructively modify this... */ | |
1692 | target_type = copy_multiple_data (target_type); | |
1693 | } | |
1694 | else | |
1695 | #endif | |
1696 | CHECK_SYMBOL (target_type, 0); | |
1697 | ||
1698 | val = x_get_local_selection (selection_symbol, target_type); | |
1699 | ||
1700 | if (NILP (val)) | |
1701 | { | |
1702 | val = x_get_foreign_selection (selection_symbol, target_type); | |
1703 | goto DONE; | |
1704 | } | |
1705 | ||
1706 | if (CONSP (val) | |
1707 | && SYMBOLP (XCONS (val)->car)) | |
1708 | { | |
1709 | val = XCONS (val)->cdr; | |
1710 | if (CONSP (val) && NILP (XCONS (val)->cdr)) | |
1711 | val = XCONS (val)->car; | |
1712 | } | |
1713 | val = clean_local_selection_data (val); | |
1714 | DONE: | |
1715 | UNGCPRO; | |
1716 | return val; | |
1717 | } | |
1718 | ||
1719 | DEFUN ("x-disown-selection-internal", | |
1720 | Fx_disown_selection_internal, Sx_disown_selection_internal, 1, 2, 0, | |
a87ed99c RS |
1721 | "If we own the selection SELECTION, disown it.\n\ |
1722 | Disowning it means there is no such selection.") | |
ede4db72 RS |
1723 | (selection, time) |
1724 | Lisp_Object selection; | |
1725 | Lisp_Object time; | |
1726 | { | |
ede4db72 RS |
1727 | Time timestamp; |
1728 | Atom selection_atom; | |
1729 | XSelectionClearEvent event; | |
3834c318 | 1730 | Display *display; |
5c3a351a | 1731 | struct x_display_info *dpyinfo; |
ede4db72 | 1732 | |
703e0710 | 1733 | check_x (); |
3834c318 | 1734 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1735 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
ede4db72 RS |
1736 | CHECK_SYMBOL (selection, 0); |
1737 | if (NILP (time)) | |
7da64e5c | 1738 | timestamp = last_event_timestamp; |
ede4db72 RS |
1739 | else |
1740 | timestamp = cons_to_long (time); | |
1741 | ||
1742 | if (NILP (assq_no_quit (selection, Vselection_alist))) | |
1743 | return Qnil; /* Don't disown the selection when we're not the owner. */ | |
1744 | ||
5c3a351a | 1745 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection); |
ede4db72 RS |
1746 | |
1747 | BLOCK_INPUT; | |
1748 | XSetSelectionOwner (display, selection_atom, None, timestamp); | |
1749 | UNBLOCK_INPUT; | |
1750 | ||
eb8c3be9 | 1751 | /* It doesn't seem to be guaranteed that a SelectionClear event will be |
ede4db72 RS |
1752 | generated for a window which owns the selection when that window sets |
1753 | the selection owner to None. The NCD server does, the MIT Sun4 server | |
1754 | doesn't. So we synthesize one; this means we might get two, but | |
1755 | that's ok, because the second one won't have any effect. */ | |
8d47f8c4 RS |
1756 | SELECTION_EVENT_DISPLAY (&event) = display; |
1757 | SELECTION_EVENT_SELECTION (&event) = selection_atom; | |
1758 | SELECTION_EVENT_TIME (&event) = timestamp; | |
ede4db72 RS |
1759 | x_handle_selection_clear (&event); |
1760 | ||
1761 | return Qt; | |
1762 | } | |
1763 | ||
a87ed99c RS |
1764 | /* Get rid of all the selections in buffer BUFFER. |
1765 | This is used when we kill a buffer. */ | |
1766 | ||
1767 | void | |
1768 | x_disown_buffer_selections (buffer) | |
1769 | Lisp_Object buffer; | |
1770 | { | |
1771 | Lisp_Object tail; | |
1772 | struct buffer *buf = XBUFFER (buffer); | |
1773 | ||
1774 | for (tail = Vselection_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1775 | { | |
1776 | Lisp_Object elt, value; | |
1777 | elt = XCONS (tail)->car; | |
1778 | value = XCONS (elt)->cdr; | |
1779 | if (CONSP (value) && MARKERP (XCONS (value)->car) | |
1780 | && XMARKER (XCONS (value)->car)->buffer == buf) | |
1781 | Fx_disown_selection_internal (XCONS (elt)->car, Qnil); | |
1782 | } | |
1783 | } | |
ede4db72 RS |
1784 | |
1785 | DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p, | |
1786 | 0, 1, 0, | |
a87ed99c | 1787 | "Whether the current Emacs process owns the given X Selection.\n\ |
ede4db72 RS |
1788 | The arg should be the name of the selection in question, typically one of\n\ |
1789 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1790 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1791 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
1792 | and t is the same as `SECONDARY'.)") | |
1793 | (selection) | |
1794 | Lisp_Object selection; | |
1795 | { | |
703e0710 | 1796 | check_x (); |
ede4db72 RS |
1797 | CHECK_SYMBOL (selection, 0); |
1798 | if (EQ (selection, Qnil)) selection = QPRIMARY; | |
1799 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
1800 | ||
1801 | if (NILP (Fassq (selection, Vselection_alist))) | |
1802 | return Qnil; | |
1803 | return Qt; | |
1804 | } | |
1805 | ||
1806 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
1807 | 0, 1, 0, | |
1808 | "Whether there is an owner for the given X Selection.\n\ | |
1809 | The arg should be the name of the selection in question, typically one of\n\ | |
1810 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1811 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1812 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
1813 | and t is the same as `SECONDARY'.)") | |
1814 | (selection) | |
1815 | Lisp_Object selection; | |
1816 | { | |
1817 | Window owner; | |
356ba514 | 1818 | Atom atom; |
3834c318 RS |
1819 | Display *dpy; |
1820 | ||
b8c70430 | 1821 | /* It should be safe to call this before we have an X frame. */ |
c6423dc1 | 1822 | if (! FRAME_X_P (selected_frame)) |
b8c70430 RS |
1823 | return Qnil; |
1824 | ||
3834c318 | 1825 | dpy = FRAME_X_DISPLAY (selected_frame); |
ede4db72 RS |
1826 | CHECK_SYMBOL (selection, 0); |
1827 | if (!NILP (Fx_selection_owner_p (selection))) | |
1828 | return Qt; | |
356ba514 RS |
1829 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
1830 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
5c3a351a RS |
1831 | atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
1832 | dpy, selection); | |
356ba514 RS |
1833 | if (atom == 0) |
1834 | return Qnil; | |
ede4db72 | 1835 | BLOCK_INPUT; |
356ba514 | 1836 | owner = XGetSelectionOwner (dpy, atom); |
ede4db72 RS |
1837 | UNBLOCK_INPUT; |
1838 | return (owner ? Qt : Qnil); | |
1839 | } | |
1840 | ||
1841 | \f | |
1842 | #ifdef CUT_BUFFER_SUPPORT | |
1843 | ||
1844 | static int cut_buffers_initialized; /* Whether we're sure they all exist */ | |
1845 | ||
1846 | /* Ensure that all 8 cut buffers exist. ICCCM says we gotta... */ | |
1847 | static void | |
1848 | initialize_cut_buffers (display, window) | |
1849 | Display *display; | |
1850 | Window window; | |
1851 | { | |
1852 | unsigned char *data = (unsigned char *) ""; | |
1853 | BLOCK_INPUT; | |
1854 | #define FROB(atom) XChangeProperty (display, window, atom, XA_STRING, 8, \ | |
1855 | PropModeAppend, data, 0) | |
1856 | FROB (XA_CUT_BUFFER0); | |
1857 | FROB (XA_CUT_BUFFER1); | |
1858 | FROB (XA_CUT_BUFFER2); | |
1859 | FROB (XA_CUT_BUFFER3); | |
1860 | FROB (XA_CUT_BUFFER4); | |
1861 | FROB (XA_CUT_BUFFER5); | |
1862 | FROB (XA_CUT_BUFFER6); | |
1863 | FROB (XA_CUT_BUFFER7); | |
1864 | #undef FROB | |
1865 | UNBLOCK_INPUT; | |
1866 | cut_buffers_initialized = 1; | |
1867 | } | |
1868 | ||
1869 | ||
a87ed99c | 1870 | #define CHECK_CUT_BUFFER(symbol,n) \ |
ede4db72 RS |
1871 | { CHECK_SYMBOL ((symbol), (n)); \ |
1872 | if (!EQ((symbol), QCUT_BUFFER0) && !EQ((symbol), QCUT_BUFFER1) \ | |
1873 | && !EQ((symbol), QCUT_BUFFER2) && !EQ((symbol), QCUT_BUFFER3) \ | |
1874 | && !EQ((symbol), QCUT_BUFFER4) && !EQ((symbol), QCUT_BUFFER5) \ | |
1875 | && !EQ((symbol), QCUT_BUFFER6) && !EQ((symbol), QCUT_BUFFER7)) \ | |
1876 | Fsignal (Qerror, \ | |
a87ed99c | 1877 | Fcons (build_string ("doesn't name a cut buffer"), \ |
ede4db72 RS |
1878 | Fcons ((symbol), Qnil))); \ |
1879 | } | |
1880 | ||
a87ed99c RS |
1881 | DEFUN ("x-get-cut-buffer-internal", Fx_get_cut_buffer_internal, |
1882 | Sx_get_cut_buffer_internal, 1, 1, 0, | |
1883 | "Returns the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
1884 | (buffer) |
1885 | Lisp_Object buffer; | |
1886 | { | |
3834c318 | 1887 | Window window; |
ede4db72 RS |
1888 | Atom buffer_atom; |
1889 | unsigned char *data; | |
1890 | int bytes; | |
1891 | Atom type; | |
1892 | int format; | |
1893 | unsigned long size; | |
1894 | Lisp_Object ret; | |
3834c318 | 1895 | Display *display; |
5c3a351a | 1896 | struct x_display_info *dpyinfo; |
ede4db72 | 1897 | |
703e0710 | 1898 | check_x (); |
3834c318 | 1899 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1900 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
3834c318 | 1901 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ |
a87ed99c | 1902 | CHECK_CUT_BUFFER (buffer, 0); |
5c3a351a | 1903 | buffer_atom = symbol_to_x_atom (dpyinfo, display, buffer); |
ede4db72 RS |
1904 | |
1905 | x_get_window_property (display, window, buffer_atom, &data, &bytes, | |
1906 | &type, &format, &size, 0); | |
1907 | if (!data) return Qnil; | |
1908 | ||
1909 | if (format != 8 || type != XA_STRING) | |
1910 | Fsignal (Qerror, | |
1911 | Fcons (build_string ("cut buffer doesn't contain 8-bit data"), | |
5c3a351a | 1912 | Fcons (x_atom_to_symbol (dpyinfo, display, type), |
ede4db72 RS |
1913 | Fcons (make_number (format), Qnil)))); |
1914 | ||
1915 | ret = (bytes ? make_string ((char *) data, bytes) : Qnil); | |
1916 | xfree (data); | |
1917 | return ret; | |
1918 | } | |
1919 | ||
1920 | ||
a87ed99c RS |
1921 | DEFUN ("x-store-cut-buffer-internal", Fx_store_cut_buffer_internal, |
1922 | Sx_store_cut_buffer_internal, 2, 2, 0, | |
1923 | "Sets the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
1924 | (buffer, string) |
1925 | Lisp_Object buffer, string; | |
1926 | { | |
3834c318 | 1927 | Window window; |
ede4db72 RS |
1928 | Atom buffer_atom; |
1929 | unsigned char *data; | |
1930 | int bytes; | |
1931 | int bytes_remaining; | |
3834c318 RS |
1932 | int max_bytes; |
1933 | Display *display; | |
ede4db72 | 1934 | |
703e0710 | 1935 | check_x (); |
3834c318 RS |
1936 | display = FRAME_X_DISPLAY (selected_frame); |
1937 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
1938 | ||
1939 | max_bytes = SELECTION_QUANTUM (display); | |
1940 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
1941 | max_bytes = MAX_SELECTION_QUANTUM; | |
1942 | ||
a87ed99c | 1943 | CHECK_CUT_BUFFER (buffer, 0); |
ede4db72 | 1944 | CHECK_STRING (string, 0); |
5c3a351a RS |
1945 | buffer_atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
1946 | display, buffer); | |
ede4db72 RS |
1947 | data = (unsigned char *) XSTRING (string)->data; |
1948 | bytes = XSTRING (string)->size; | |
1949 | bytes_remaining = bytes; | |
1950 | ||
1951 | if (! cut_buffers_initialized) initialize_cut_buffers (display, window); | |
1952 | ||
1953 | BLOCK_INPUT; | |
10608c8c RS |
1954 | |
1955 | /* Don't mess up with an empty value. */ | |
1956 | if (!bytes_remaining) | |
1957 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
1958 | PropModeReplace, data, 0); | |
1959 | ||
ede4db72 RS |
1960 | while (bytes_remaining) |
1961 | { | |
1962 | int chunk = (bytes_remaining < max_bytes | |
1963 | ? bytes_remaining : max_bytes); | |
1964 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
1965 | (bytes_remaining == bytes | |
1966 | ? PropModeReplace | |
1967 | : PropModeAppend), | |
1968 | data, chunk); | |
1969 | data += chunk; | |
1970 | bytes_remaining -= chunk; | |
1971 | } | |
1972 | UNBLOCK_INPUT; | |
1973 | return string; | |
1974 | } | |
1975 | ||
1976 | ||
a87ed99c RS |
1977 | DEFUN ("x-rotate-cut-buffers-internal", Fx_rotate_cut_buffers_internal, |
1978 | Sx_rotate_cut_buffers_internal, 1, 1, 0, | |
1979 | "Rotate the values of the cut buffers by the given number of steps;\n\ | |
ede4db72 RS |
1980 | positive means move values forward, negative means backward.") |
1981 | (n) | |
1982 | Lisp_Object n; | |
1983 | { | |
3834c318 RS |
1984 | Window window; |
1985 | Atom props[8]; | |
1986 | Display *display; | |
ede4db72 | 1987 | |
703e0710 | 1988 | check_x (); |
3834c318 RS |
1989 | display = FRAME_X_DISPLAY (selected_frame); |
1990 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
7da64e5c | 1991 | CHECK_NUMBER (n, 0); |
3834c318 RS |
1992 | if (XINT (n) == 0) |
1993 | return n; | |
1994 | if (! cut_buffers_initialized) | |
1995 | initialize_cut_buffers (display, window); | |
1996 | ||
ede4db72 RS |
1997 | props[0] = XA_CUT_BUFFER0; |
1998 | props[1] = XA_CUT_BUFFER1; | |
1999 | props[2] = XA_CUT_BUFFER2; | |
2000 | props[3] = XA_CUT_BUFFER3; | |
2001 | props[4] = XA_CUT_BUFFER4; | |
2002 | props[5] = XA_CUT_BUFFER5; | |
2003 | props[6] = XA_CUT_BUFFER6; | |
2004 | props[7] = XA_CUT_BUFFER7; | |
2005 | BLOCK_INPUT; | |
2006 | XRotateWindowProperties (display, window, props, 8, XINT (n)); | |
2007 | UNBLOCK_INPUT; | |
2008 | return n; | |
2009 | } | |
2010 | ||
2011 | #endif | |
2012 | \f | |
ede4db72 RS |
2013 | void |
2014 | syms_of_xselect () | |
2015 | { | |
ede4db72 RS |
2016 | defsubr (&Sx_get_selection_internal); |
2017 | defsubr (&Sx_own_selection_internal); | |
2018 | defsubr (&Sx_disown_selection_internal); | |
2019 | defsubr (&Sx_selection_owner_p); | |
2020 | defsubr (&Sx_selection_exists_p); | |
2021 | ||
2022 | #ifdef CUT_BUFFER_SUPPORT | |
a87ed99c RS |
2023 | defsubr (&Sx_get_cut_buffer_internal); |
2024 | defsubr (&Sx_store_cut_buffer_internal); | |
2025 | defsubr (&Sx_rotate_cut_buffers_internal); | |
ede4db72 RS |
2026 | cut_buffers_initialized = 0; |
2027 | #endif | |
2028 | ||
2029 | reading_selection_reply = Fcons (Qnil, Qnil); | |
2030 | staticpro (&reading_selection_reply); | |
2031 | reading_selection_window = 0; | |
2032 | reading_which_selection = 0; | |
2033 | ||
2034 | property_change_wait_list = 0; | |
2f65feb6 | 2035 | prop_location_identifier = 0; |
ede4db72 RS |
2036 | property_change_reply = Fcons (Qnil, Qnil); |
2037 | staticpro (&property_change_reply); | |
2038 | ||
2039 | Vselection_alist = Qnil; | |
2040 | staticpro (&Vselection_alist); | |
2041 | ||
2042 | DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist, | |
2043 | "An alist associating X Windows selection-types with functions.\n\ | |
2044 | These functions are called to convert the selection, with three args:\n\ | |
2045 | the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2046 | a desired type to which the selection should be converted;\n\ | |
2047 | and the local selection value (whatever was given to `x-own-selection').\n\ | |
2048 | \n\ | |
2049 | The function should return the value to send to the X server\n\ | |
2050 | \(typically a string). A return value of nil\n\ | |
2051 | means that the conversion could not be done.\n\ | |
2052 | A return value which is the symbol `NULL'\n\ | |
2053 | means that a side-effect was executed,\n\ | |
2054 | and there is no meaningful selection value."); | |
2055 | Vselection_converter_alist = Qnil; | |
2056 | ||
2057 | DEFVAR_LISP ("x-lost-selection-hooks", &Vx_lost_selection_hooks, | |
2058 | "A list of functions to be called when Emacs loses an X selection.\n\ | |
2059 | \(This happens when some other X client makes its own selection\n\ | |
2060 | or when a Lisp program explicitly clears the selection.)\n\ | |
2061 | The functions are called with one argument, the selection type\n\ | |
2062 | \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.)"); | |
2063 | Vx_lost_selection_hooks = Qnil; | |
2064 | ||
2065 | DEFVAR_LISP ("x-sent-selection-hooks", &Vx_sent_selection_hooks, | |
2066 | "A list of functions to be called when Emacs answers a selection request.\n\ | |
2067 | The functions are called with four arguments:\n\ | |
2068 | - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2069 | - the selection-type which Emacs was asked to convert the\n\ | |
2070 | selection into before sending (for example, `STRING' or `LENGTH');\n\ | |
2071 | - a flag indicating success or failure for responding to the request.\n\ | |
2072 | We might have failed (and declined the request) for any number of reasons,\n\ | |
2073 | including being asked for a selection that we no longer own, or being asked\n\ | |
2074 | to convert into a type that we don't know about or that is inappropriate.\n\ | |
2075 | This hook doesn't let you change the behavior of Emacs's selection replies,\n\ | |
2076 | it merely informs you that they have happened."); | |
2077 | Vx_sent_selection_hooks = Qnil; | |
2078 | ||
2079 | DEFVAR_INT ("x-selection-timeout", &x_selection_timeout, | |
80da0190 RS |
2080 | "Number of milliseconds to wait for a selection reply.\n\ |
2081 | If the selection owner doens't reply in this time, we give up.\n\ | |
ede4db72 | 2082 | A value of 0 means wait as long as necessary. This is initialized from the\n\ |
80da0190 | 2083 | \"*selectionTimeout\" resource."); |
ede4db72 RS |
2084 | x_selection_timeout = 0; |
2085 | ||
2086 | QPRIMARY = intern ("PRIMARY"); staticpro (&QPRIMARY); | |
2087 | QSECONDARY = intern ("SECONDARY"); staticpro (&QSECONDARY); | |
2088 | QSTRING = intern ("STRING"); staticpro (&QSTRING); | |
2089 | QINTEGER = intern ("INTEGER"); staticpro (&QINTEGER); | |
2090 | QCLIPBOARD = intern ("CLIPBOARD"); staticpro (&QCLIPBOARD); | |
2091 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2092 | QTEXT = intern ("TEXT"); staticpro (&QTEXT); | |
2093 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2094 | QDELETE = intern ("DELETE"); staticpro (&QDELETE); | |
2095 | QMULTIPLE = intern ("MULTIPLE"); staticpro (&QMULTIPLE); | |
2096 | QINCR = intern ("INCR"); staticpro (&QINCR); | |
2097 | QEMACS_TMP = intern ("_EMACS_TMP_"); staticpro (&QEMACS_TMP); | |
2098 | QTARGETS = intern ("TARGETS"); staticpro (&QTARGETS); | |
2099 | QATOM = intern ("ATOM"); staticpro (&QATOM); | |
2100 | QATOM_PAIR = intern ("ATOM_PAIR"); staticpro (&QATOM_PAIR); | |
2101 | QNULL = intern ("NULL"); staticpro (&QNULL); | |
2102 | ||
2103 | #ifdef CUT_BUFFER_SUPPORT | |
2104 | QCUT_BUFFER0 = intern ("CUT_BUFFER0"); staticpro (&QCUT_BUFFER0); | |
2105 | QCUT_BUFFER1 = intern ("CUT_BUFFER1"); staticpro (&QCUT_BUFFER1); | |
2106 | QCUT_BUFFER2 = intern ("CUT_BUFFER2"); staticpro (&QCUT_BUFFER2); | |
2107 | QCUT_BUFFER3 = intern ("CUT_BUFFER3"); staticpro (&QCUT_BUFFER3); | |
2108 | QCUT_BUFFER4 = intern ("CUT_BUFFER4"); staticpro (&QCUT_BUFFER4); | |
2109 | QCUT_BUFFER5 = intern ("CUT_BUFFER5"); staticpro (&QCUT_BUFFER5); | |
2110 | QCUT_BUFFER6 = intern ("CUT_BUFFER6"); staticpro (&QCUT_BUFFER6); | |
2111 | QCUT_BUFFER7 = intern ("CUT_BUFFER7"); staticpro (&QCUT_BUFFER7); | |
2112 | #endif | |
2113 | ||
2114 | } |