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2408b3a1 | 1 | /* X Selection processing for Emacs. |
f8c25f1b | 2 | Copyright (C) 1993, 1994, 1995 Free Software Foundation. |
ede4db72 RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
c6c5df7f | 20 | |
ede4db72 RS |
21 | /* Rewritten by jwz */ |
22 | ||
18160b98 | 23 | #include <config.h> |
ede4db72 RS |
24 | #include "lisp.h" |
25 | #include "xterm.h" /* for all of the X includes */ | |
7da64e5c RS |
26 | #include "dispextern.h" /* frame.h seems to want this */ |
27 | #include "frame.h" /* Need this to get the X window of selected_frame */ | |
9ac0d9e0 | 28 | #include "blockinput.h" |
7da64e5c RS |
29 | |
30 | #define xfree free | |
ede4db72 RS |
31 | |
32 | #define CUT_BUFFER_SUPPORT | |
33 | ||
ede4db72 RS |
34 | Lisp_Object QPRIMARY, QSECONDARY, QSTRING, QINTEGER, QCLIPBOARD, QTIMESTAMP, |
35 | QTEXT, QDELETE, QMULTIPLE, QINCR, QEMACS_TMP, QTARGETS, QATOM, QNULL, | |
36 | QATOM_PAIR; | |
37 | ||
38 | #ifdef CUT_BUFFER_SUPPORT | |
39 | Lisp_Object QCUT_BUFFER0, QCUT_BUFFER1, QCUT_BUFFER2, QCUT_BUFFER3, | |
40 | QCUT_BUFFER4, QCUT_BUFFER5, QCUT_BUFFER6, QCUT_BUFFER7; | |
41 | #endif | |
42 | ||
8f4f023f RS |
43 | static Lisp_Object Vx_lost_selection_hooks; |
44 | static Lisp_Object Vx_sent_selection_hooks; | |
ede4db72 RS |
45 | |
46 | /* If this is a smaller number than the max-request-size of the display, | |
47 | emacs will use INCR selection transfer when the selection is larger | |
48 | than this. The max-request-size is usually around 64k, so if you want | |
49 | emacs to use incremental selection transfers when the selection is | |
50 | smaller than that, set this. I added this mostly for debugging the | |
8f4f023f | 51 | incremental transfer stuff, but it might improve server performance. */ |
ede4db72 RS |
52 | #define MAX_SELECTION_QUANTUM 0xFFFFFF |
53 | ||
c3498e64 JB |
54 | #ifdef HAVE_X11R4 |
55 | #define SELECTION_QUANTUM(dpy) ((XMaxRequestSize(dpy) << 2) - 100) | |
56 | #else | |
57 | #define SELECTION_QUANTUM(dpy) (((dpy)->max_request_size << 2) - 100) | |
58 | #endif | |
ede4db72 | 59 | |
7da64e5c RS |
60 | /* The timestamp of the last input event Emacs received from the X server. */ |
61 | unsigned long last_event_timestamp; | |
ede4db72 RS |
62 | |
63 | /* This is an association list whose elements are of the form | |
118bd841 RS |
64 | ( SELECTION-NAME SELECTION-VALUE SELECTION-TIMESTAMP FRAME) |
65 | SELECTION-NAME is a lisp symbol, whose name is the name of an X Atom. | |
66 | SELECTION-VALUE is the value that emacs owns for that selection. | |
ede4db72 | 67 | It may be any kind of Lisp object. |
118bd841 | 68 | SELECTION-TIMESTAMP is the time at which emacs began owning this selection, |
ede4db72 | 69 | as a cons of two 16-bit numbers (making a 32 bit time.) |
118bd841 RS |
70 | FRAME is the frame for which we made the selection. |
71 | If there is an entry in this alist, then it can be assumed that Emacs owns | |
ede4db72 RS |
72 | that selection. |
73 | The only (eq) parts of this list that are visible from Lisp are the | |
8f4f023f RS |
74 | selection-values. */ |
75 | static Lisp_Object Vselection_alist; | |
ede4db72 RS |
76 | |
77 | /* This is an alist whose CARs are selection-types (whose names are the same | |
78 | as the names of X Atoms) and whose CDRs are the names of Lisp functions to | |
79 | call to convert the given Emacs selection value to a string representing | |
80 | the given selection type. This is for Lisp-level extension of the emacs | |
8f4f023f RS |
81 | selection handling. */ |
82 | static Lisp_Object Vselection_converter_alist; | |
ede4db72 RS |
83 | |
84 | /* If the selection owner takes too long to reply to a selection request, | |
8f4f023f RS |
85 | we give up on it. This is in milliseconds (0 = no timeout.) */ |
86 | static int x_selection_timeout; | |
ede4db72 RS |
87 | \f |
88 | /* Utility functions */ | |
89 | ||
90 | static void lisp_data_to_selection_data (); | |
91 | static Lisp_Object selection_data_to_lisp_data (); | |
92 | static Lisp_Object x_get_window_property_as_lisp_data (); | |
93 | ||
ede4db72 RS |
94 | /* This converts a Lisp symbol to a server Atom, avoiding a server |
95 | roundtrip whenever possible. */ | |
96 | ||
97 | static Atom | |
5c3a351a RS |
98 | symbol_to_x_atom (dpyinfo, display, sym) |
99 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
100 | Display *display; |
101 | Lisp_Object sym; | |
102 | { | |
103 | Atom val; | |
104 | if (NILP (sym)) return 0; | |
105 | if (EQ (sym, QPRIMARY)) return XA_PRIMARY; | |
106 | if (EQ (sym, QSECONDARY)) return XA_SECONDARY; | |
107 | if (EQ (sym, QSTRING)) return XA_STRING; | |
108 | if (EQ (sym, QINTEGER)) return XA_INTEGER; | |
109 | if (EQ (sym, QATOM)) return XA_ATOM; | |
5c3a351a RS |
110 | if (EQ (sym, QCLIPBOARD)) return dpyinfo->Xatom_CLIPBOARD; |
111 | if (EQ (sym, QTIMESTAMP)) return dpyinfo->Xatom_TIMESTAMP; | |
112 | if (EQ (sym, QTEXT)) return dpyinfo->Xatom_TEXT; | |
113 | if (EQ (sym, QDELETE)) return dpyinfo->Xatom_DELETE; | |
114 | if (EQ (sym, QMULTIPLE)) return dpyinfo->Xatom_MULTIPLE; | |
115 | if (EQ (sym, QINCR)) return dpyinfo->Xatom_INCR; | |
116 | if (EQ (sym, QEMACS_TMP)) return dpyinfo->Xatom_EMACS_TMP; | |
117 | if (EQ (sym, QTARGETS)) return dpyinfo->Xatom_TARGETS; | |
118 | if (EQ (sym, QNULL)) return dpyinfo->Xatom_NULL; | |
ede4db72 RS |
119 | #ifdef CUT_BUFFER_SUPPORT |
120 | if (EQ (sym, QCUT_BUFFER0)) return XA_CUT_BUFFER0; | |
121 | if (EQ (sym, QCUT_BUFFER1)) return XA_CUT_BUFFER1; | |
122 | if (EQ (sym, QCUT_BUFFER2)) return XA_CUT_BUFFER2; | |
123 | if (EQ (sym, QCUT_BUFFER3)) return XA_CUT_BUFFER3; | |
124 | if (EQ (sym, QCUT_BUFFER4)) return XA_CUT_BUFFER4; | |
125 | if (EQ (sym, QCUT_BUFFER5)) return XA_CUT_BUFFER5; | |
126 | if (EQ (sym, QCUT_BUFFER6)) return XA_CUT_BUFFER6; | |
127 | if (EQ (sym, QCUT_BUFFER7)) return XA_CUT_BUFFER7; | |
128 | #endif | |
129 | if (!SYMBOLP (sym)) abort (); | |
130 | ||
131 | #if 0 | |
132 | fprintf (stderr, " XInternAtom %s\n", (char *) XSYMBOL (sym)->name->data); | |
133 | #endif | |
134 | BLOCK_INPUT; | |
135 | val = XInternAtom (display, (char *) XSYMBOL (sym)->name->data, False); | |
136 | UNBLOCK_INPUT; | |
137 | return val; | |
138 | } | |
139 | ||
140 | ||
141 | /* This converts a server Atom to a Lisp symbol, avoiding server roundtrips | |
142 | and calls to intern whenever possible. */ | |
143 | ||
144 | static Lisp_Object | |
5c3a351a RS |
145 | x_atom_to_symbol (dpyinfo, display, atom) |
146 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
147 | Display *display; |
148 | Atom atom; | |
149 | { | |
150 | char *str; | |
151 | Lisp_Object val; | |
152 | if (! atom) return Qnil; | |
7da64e5c RS |
153 | switch (atom) |
154 | { | |
155 | case XA_PRIMARY: | |
156 | return QPRIMARY; | |
157 | case XA_SECONDARY: | |
158 | return QSECONDARY; | |
159 | case XA_STRING: | |
160 | return QSTRING; | |
161 | case XA_INTEGER: | |
162 | return QINTEGER; | |
163 | case XA_ATOM: | |
164 | return QATOM; | |
ede4db72 | 165 | #ifdef CUT_BUFFER_SUPPORT |
7da64e5c RS |
166 | case XA_CUT_BUFFER0: |
167 | return QCUT_BUFFER0; | |
168 | case XA_CUT_BUFFER1: | |
169 | return QCUT_BUFFER1; | |
170 | case XA_CUT_BUFFER2: | |
171 | return QCUT_BUFFER2; | |
172 | case XA_CUT_BUFFER3: | |
173 | return QCUT_BUFFER3; | |
174 | case XA_CUT_BUFFER4: | |
175 | return QCUT_BUFFER4; | |
176 | case XA_CUT_BUFFER5: | |
177 | return QCUT_BUFFER5; | |
178 | case XA_CUT_BUFFER6: | |
179 | return QCUT_BUFFER6; | |
180 | case XA_CUT_BUFFER7: | |
181 | return QCUT_BUFFER7; | |
ede4db72 | 182 | #endif |
7da64e5c RS |
183 | } |
184 | ||
5c3a351a | 185 | if (atom == dpyinfo->Xatom_CLIPBOARD) |
7da64e5c | 186 | return QCLIPBOARD; |
5c3a351a | 187 | if (atom == dpyinfo->Xatom_TIMESTAMP) |
7da64e5c | 188 | return QTIMESTAMP; |
5c3a351a | 189 | if (atom == dpyinfo->Xatom_TEXT) |
7da64e5c | 190 | return QTEXT; |
5c3a351a | 191 | if (atom == dpyinfo->Xatom_DELETE) |
7da64e5c | 192 | return QDELETE; |
5c3a351a | 193 | if (atom == dpyinfo->Xatom_MULTIPLE) |
7da64e5c | 194 | return QMULTIPLE; |
5c3a351a | 195 | if (atom == dpyinfo->Xatom_INCR) |
7da64e5c | 196 | return QINCR; |
5c3a351a | 197 | if (atom == dpyinfo->Xatom_EMACS_TMP) |
7da64e5c | 198 | return QEMACS_TMP; |
5c3a351a | 199 | if (atom == dpyinfo->Xatom_TARGETS) |
7da64e5c | 200 | return QTARGETS; |
5c3a351a | 201 | if (atom == dpyinfo->Xatom_NULL) |
7da64e5c | 202 | return QNULL; |
ede4db72 RS |
203 | |
204 | BLOCK_INPUT; | |
205 | str = XGetAtomName (display, atom); | |
206 | UNBLOCK_INPUT; | |
207 | #if 0 | |
208 | fprintf (stderr, " XGetAtomName --> %s\n", str); | |
209 | #endif | |
210 | if (! str) return Qnil; | |
211 | val = intern (str); | |
212 | BLOCK_INPUT; | |
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 | ||
387 | /* Send a SelectionNotify event to the requestor with property=None, | |
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); | |
397 | reply.requestor = SELECTION_EVENT_REQUESTOR (event); | |
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; | |
7ffb2841 RS |
404 | XSendEvent (reply.display, reply.requestor, False, 0L, |
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 | |
415 | an error, we tell the requestor that we were unable to do what they wanted | |
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)); | |
466 | } | |
467 | ||
468 | /* Return some frame whose display info is DPYINFO. | |
469 | Return nil if there is none. */ | |
470 | ||
471 | static Lisp_Object | |
472 | some_frame_on_display (dpyinfo) | |
473 | struct x_display_info *dpyinfo; | |
474 | { | |
475 | Lisp_Object list, frame; | |
476 | ||
477 | FOR_EACH_FRAME (list, frame) | |
478 | { | |
479 | if (FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
480 | return frame; | |
481 | } | |
482 | ||
483 | return Qnil; | |
484 | } | |
d1f21a66 | 485 | \f |
ede4db72 RS |
486 | /* Send the reply to a selection request event EVENT. |
487 | TYPE is the type of selection data requested. | |
488 | DATA and SIZE describe the data to send, already converted. | |
489 | FORMAT is the unit-size (in bits) of the data to be transmitted. */ | |
490 | ||
491 | static void | |
492 | x_reply_selection_request (event, format, data, size, type) | |
493 | struct input_event *event; | |
494 | int format, size; | |
495 | unsigned char *data; | |
496 | Atom type; | |
497 | { | |
498 | XSelectionEvent reply; | |
499 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
500 | Window window = SELECTION_EVENT_REQUESTOR (event); | |
501 | int bytes_remaining; | |
502 | int format_bytes = format/8; | |
503 | int max_bytes = SELECTION_QUANTUM (display); | |
5c3a351a | 504 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 RS |
505 | |
506 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
507 | max_bytes = MAX_SELECTION_QUANTUM; | |
508 | ||
509 | reply.type = SelectionNotify; | |
510 | reply.display = display; | |
511 | reply.requestor = window; | |
512 | reply.selection = SELECTION_EVENT_SELECTION (event); | |
513 | reply.time = SELECTION_EVENT_TIME (event); | |
514 | reply.target = SELECTION_EVENT_TARGET (event); | |
515 | reply.property = SELECTION_EVENT_PROPERTY (event); | |
516 | if (reply.property == None) | |
517 | reply.property = reply.target; | |
518 | ||
519 | /* #### XChangeProperty can generate BadAlloc, and we must handle it! */ | |
afe1529d RS |
520 | BLOCK_INPUT; |
521 | x_catch_errors (display); | |
ede4db72 | 522 | |
ede4db72 RS |
523 | /* Store the data on the requested property. |
524 | If the selection is large, only store the first N bytes of it. | |
525 | */ | |
526 | bytes_remaining = size * format_bytes; | |
527 | if (bytes_remaining <= max_bytes) | |
528 | { | |
529 | /* Send all the data at once, with minimal handshaking. */ | |
530 | #if 0 | |
531 | fprintf (stderr,"\nStoring all %d\n", bytes_remaining); | |
532 | #endif | |
533 | XChangeProperty (display, window, reply.property, type, format, | |
534 | PropModeReplace, data, size); | |
535 | /* At this point, the selection was successfully stored; ack it. */ | |
2f65feb6 | 536 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
ede4db72 RS |
537 | } |
538 | else | |
539 | { | |
540 | /* Send an INCR selection. */ | |
d1f21a66 | 541 | struct prop_location *wait_object; |
afe1529d | 542 | int had_errors; |
55b2d45d RS |
543 | int count = specpdl_ptr - specpdl; |
544 | Lisp_Object frame; | |
ede4db72 | 545 | |
55b2d45d RS |
546 | frame = some_frame_on_display (dpyinfo); |
547 | ||
548 | /* If the display no longer has frames, we can't expect | |
549 | to get many more selection requests from it, so don't | |
550 | bother trying to queue them. */ | |
551 | if (!NILP (frame)) | |
552 | { | |
553 | x_start_queuing_selection_requests (display); | |
554 | ||
555 | record_unwind_protect (queue_selection_requests_unwind, | |
556 | frame); | |
557 | } | |
2f65feb6 | 558 | |
19126e11 | 559 | if (x_window_to_frame (dpyinfo, window)) /* #### debug */ |
ede4db72 RS |
560 | error ("attempt to transfer an INCR to ourself!"); |
561 | #if 0 | |
562 | fprintf (stderr, "\nINCR %d\n", bytes_remaining); | |
563 | #endif | |
d1f21a66 RS |
564 | wait_object = expect_property_change (display, window, reply.property, |
565 | PropertyDelete); | |
ede4db72 | 566 | |
5c3a351a | 567 | XChangeProperty (display, window, reply.property, dpyinfo->Xatom_INCR, |
55b2d45d RS |
568 | 32, PropModeReplace, |
569 | (unsigned char *) &bytes_remaining, 1); | |
ede4db72 RS |
570 | XSelectInput (display, window, PropertyChangeMask); |
571 | /* Tell 'em the INCR data is there... */ | |
55b2d45d | 572 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
5c3a351a | 573 | XFlush (display); |
afe1529d RS |
574 | |
575 | had_errors = x_had_errors_p (display); | |
2f65feb6 | 576 | UNBLOCK_INPUT; |
ede4db72 RS |
577 | |
578 | /* First, wait for the requestor to ack by deleting the property. | |
579 | This can run random lisp code (process handlers) or signal. */ | |
afe1529d RS |
580 | if (! had_errors) |
581 | wait_for_property_change (wait_object); | |
ede4db72 RS |
582 | |
583 | while (bytes_remaining) | |
584 | { | |
585 | int i = ((bytes_remaining < max_bytes) | |
586 | ? bytes_remaining | |
587 | : max_bytes); | |
2f65feb6 RS |
588 | |
589 | BLOCK_INPUT; | |
590 | ||
d1f21a66 RS |
591 | wait_object |
592 | = expect_property_change (display, window, reply.property, | |
593 | PropertyDelete); | |
ede4db72 RS |
594 | #if 0 |
595 | fprintf (stderr," INCR adding %d\n", i); | |
596 | #endif | |
597 | /* Append the next chunk of data to the property. */ | |
598 | XChangeProperty (display, window, reply.property, type, format, | |
599 | PropModeAppend, data, i / format_bytes); | |
600 | bytes_remaining -= i; | |
601 | data += i; | |
5c3a351a | 602 | XFlush (display); |
afe1529d | 603 | had_errors = x_had_errors_p (display); |
2f65feb6 | 604 | UNBLOCK_INPUT; |
ede4db72 | 605 | |
afe1529d RS |
606 | if (had_errors) |
607 | break; | |
608 | ||
ede4db72 RS |
609 | /* Now wait for the requestor to ack this chunk by deleting the |
610 | property. This can run random lisp code or signal. | |
611 | */ | |
d1f21a66 | 612 | wait_for_property_change (wait_object); |
ede4db72 RS |
613 | } |
614 | /* Now write a zero-length chunk to the property to tell the requestor | |
615 | that we're done. */ | |
616 | #if 0 | |
617 | fprintf (stderr," INCR done\n"); | |
618 | #endif | |
2f65feb6 | 619 | BLOCK_INPUT; |
ede4db72 RS |
620 | if (! waiting_for_other_props_on_window (display, window)) |
621 | XSelectInput (display, window, 0L); | |
622 | ||
623 | XChangeProperty (display, window, reply.property, type, format, | |
624 | PropModeReplace, data, 0); | |
55b2d45d RS |
625 | |
626 | unbind_to (count, Qnil); | |
ede4db72 | 627 | } |
afe1529d RS |
628 | |
629 | XFlush (display); | |
630 | x_uncatch_errors (display); | |
631 | UNBLOCK_INPUT; | |
ede4db72 RS |
632 | } |
633 | \f | |
634 | /* Handle a SelectionRequest event EVENT. | |
635 | This is called from keyboard.c when such an event is found in the queue. */ | |
636 | ||
637 | void | |
638 | x_handle_selection_request (event) | |
639 | struct input_event *event; | |
640 | { | |
641 | struct gcpro gcpro1, gcpro2, gcpro3; | |
9d2d1dd8 | 642 | Lisp_Object local_selection_data; |
ede4db72 | 643 | Lisp_Object selection_symbol; |
9d2d1dd8 KH |
644 | Lisp_Object target_symbol; |
645 | Lisp_Object converted_selection; | |
ede4db72 | 646 | Time local_selection_time; |
9d2d1dd8 | 647 | Lisp_Object successful_p; |
ede4db72 | 648 | int count; |
5c3a351a RS |
649 | struct x_display_info *dpyinfo |
650 | = x_display_info_for_display (SELECTION_EVENT_DISPLAY (event)); | |
ede4db72 | 651 | |
9d2d1dd8 KH |
652 | local_selection_data = Qnil; |
653 | target_symbol = Qnil; | |
654 | converted_selection = Qnil; | |
655 | successful_p = Qnil; | |
656 | ||
ede4db72 RS |
657 | GCPRO3 (local_selection_data, converted_selection, target_symbol); |
658 | ||
5c3a351a RS |
659 | selection_symbol = x_atom_to_symbol (dpyinfo, |
660 | SELECTION_EVENT_DISPLAY (event), | |
ede4db72 RS |
661 | SELECTION_EVENT_SELECTION (event)); |
662 | ||
663 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
ede4db72 RS |
664 | |
665 | if (NILP (local_selection_data)) | |
666 | { | |
667 | /* Someone asked for the selection, but we don't have it any more. | |
668 | */ | |
669 | x_decline_selection_request (event); | |
670 | goto DONE; | |
671 | } | |
672 | ||
673 | local_selection_time = (Time) | |
674 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
675 | ||
676 | if (SELECTION_EVENT_TIME (event) != CurrentTime | |
7da64e5c | 677 | && local_selection_time > SELECTION_EVENT_TIME (event)) |
ede4db72 RS |
678 | { |
679 | /* Someone asked for the selection, and we have one, but not the one | |
680 | they're looking for. | |
681 | */ | |
682 | x_decline_selection_request (event); | |
683 | goto DONE; | |
684 | } | |
685 | ||
686 | count = specpdl_ptr - specpdl; | |
687 | x_selection_current_request = event; | |
688 | record_unwind_protect (x_selection_request_lisp_error, Qnil); | |
689 | ||
5c3a351a | 690 | target_symbol = x_atom_to_symbol (dpyinfo, SELECTION_EVENT_DISPLAY (event), |
ede4db72 RS |
691 | SELECTION_EVENT_TARGET (event)); |
692 | ||
693 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
694 | if (EQ (target_symbol, QMULTIPLE)) | |
695 | target_symbol = fetch_multiple_target (event); | |
696 | #endif | |
697 | ||
698 | /* Convert lisp objects back into binary data */ | |
699 | ||
700 | converted_selection | |
701 | = x_get_local_selection (selection_symbol, target_symbol); | |
702 | ||
703 | if (! NILP (converted_selection)) | |
704 | { | |
705 | unsigned char *data; | |
706 | unsigned int size; | |
707 | int format; | |
708 | Atom type; | |
aca39f42 RS |
709 | int nofree; |
710 | ||
2f65feb6 RS |
711 | lisp_data_to_selection_data (SELECTION_EVENT_DISPLAY (event), |
712 | converted_selection, | |
aca39f42 | 713 | &data, &type, &size, &format, &nofree); |
ede4db72 RS |
714 | |
715 | x_reply_selection_request (event, format, data, size, type); | |
716 | successful_p = Qt; | |
717 | ||
718 | /* Indicate we have successfully processed this event. */ | |
7da64e5c | 719 | x_selection_current_request = 0; |
ede4db72 | 720 | |
aca39f42 RS |
721 | if (!nofree) |
722 | xfree (data); | |
ede4db72 RS |
723 | } |
724 | unbind_to (count, Qnil); | |
725 | ||
726 | DONE: | |
727 | ||
728 | UNGCPRO; | |
729 | ||
730 | /* Let random lisp code notice that the selection has been asked for. */ | |
731 | { | |
9d2d1dd8 KH |
732 | Lisp_Object rest; |
733 | rest = Vx_sent_selection_hooks; | |
ede4db72 RS |
734 | if (!EQ (rest, Qunbound)) |
735 | for (; CONSP (rest); rest = Fcdr (rest)) | |
736 | call3 (Fcar (rest), selection_symbol, target_symbol, successful_p); | |
737 | } | |
738 | } | |
739 | \f | |
740 | /* Handle a SelectionClear event EVENT, which indicates that some other | |
741 | client cleared out our previously asserted selection. | |
742 | This is called from keyboard.c when such an event is found in the queue. */ | |
743 | ||
744 | void | |
745 | x_handle_selection_clear (event) | |
746 | struct input_event *event; | |
747 | { | |
748 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
749 | Atom selection = SELECTION_EVENT_SELECTION (event); | |
750 | Time changed_owner_time = SELECTION_EVENT_TIME (event); | |
751 | ||
752 | Lisp_Object selection_symbol, local_selection_data; | |
753 | Time local_selection_time; | |
5c3a351a | 754 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 755 | |
5c3a351a | 756 | selection_symbol = x_atom_to_symbol (dpyinfo, display, selection); |
ede4db72 RS |
757 | |
758 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
759 | ||
760 | /* Well, we already believe that we don't own it, so that's just fine. */ | |
761 | if (NILP (local_selection_data)) return; | |
762 | ||
763 | local_selection_time = (Time) | |
764 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
765 | ||
766 | /* This SelectionClear is for a selection that we no longer own, so we can | |
767 | disregard it. (That is, we have reasserted the selection since this | |
768 | request was generated.) */ | |
769 | ||
770 | if (changed_owner_time != CurrentTime | |
771 | && local_selection_time > changed_owner_time) | |
772 | return; | |
773 | ||
774 | /* Otherwise, we're really honest and truly being told to drop it. | |
775 | Don't use Fdelq as that may QUIT;. */ | |
776 | ||
777 | if (EQ (local_selection_data, Fcar (Vselection_alist))) | |
778 | Vselection_alist = Fcdr (Vselection_alist); | |
779 | else | |
780 | { | |
781 | Lisp_Object rest; | |
782 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
783 | if (EQ (local_selection_data, Fcar (XCONS (rest)->cdr))) | |
784 | { | |
785 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
786 | break; | |
787 | } | |
788 | } | |
789 | ||
790 | /* Let random lisp code notice that the selection has been stolen. */ | |
791 | ||
792 | { | |
d1f21a66 RS |
793 | Lisp_Object rest; |
794 | rest = Vx_lost_selection_hooks; | |
ede4db72 | 795 | if (!EQ (rest, Qunbound)) |
d1f21a66 RS |
796 | { |
797 | for (; CONSP (rest); rest = Fcdr (rest)) | |
798 | call1 (Fcar (rest), selection_symbol); | |
7c6b2ea4 | 799 | prepare_menu_bars (); |
d1f21a66 RS |
800 | redisplay_preserve_echo_area (); |
801 | } | |
ede4db72 RS |
802 | } |
803 | } | |
804 | ||
118bd841 RS |
805 | /* Clear all selections that were made from frame F. |
806 | We do this when about to delete a frame. */ | |
807 | ||
808 | void | |
809 | x_clear_frame_selections (f) | |
810 | FRAME_PTR f; | |
811 | { | |
812 | Lisp_Object frame; | |
813 | Lisp_Object rest; | |
814 | ||
90851bbe | 815 | XSETFRAME (frame, f); |
118bd841 RS |
816 | |
817 | /* Otherwise, we're really honest and truly being told to drop it. | |
818 | Don't use Fdelq as that may QUIT;. */ | |
819 | ||
820 | while (!NILP (Vselection_alist) | |
821 | && EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (Vselection_alist))))))) | |
822 | { | |
823 | /* Let random Lisp code notice that the selection has been stolen. */ | |
824 | Lisp_Object hooks, selection_symbol; | |
825 | ||
826 | hooks = Vx_lost_selection_hooks; | |
827 | selection_symbol = Fcar (Vselection_alist); | |
828 | ||
829 | if (!EQ (hooks, Qunbound)) | |
830 | { | |
831 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
832 | call1 (Fcar (hooks), selection_symbol); | |
833 | redisplay_preserve_echo_area (); | |
834 | } | |
835 | ||
836 | Vselection_alist = Fcdr (Vselection_alist); | |
837 | } | |
838 | ||
839 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
840 | if (EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (XCONS (rest)->cdr))))))) | |
841 | { | |
842 | /* Let random Lisp code notice that the selection has been stolen. */ | |
843 | Lisp_Object hooks, selection_symbol; | |
844 | ||
845 | hooks = Vx_lost_selection_hooks; | |
846 | selection_symbol = Fcar (XCONS (rest)->cdr); | |
847 | ||
848 | if (!EQ (hooks, Qunbound)) | |
849 | { | |
850 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
851 | call1 (Fcar (hooks), selection_symbol); | |
852 | redisplay_preserve_echo_area (); | |
853 | } | |
854 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
855 | break; | |
856 | } | |
857 | } | |
ede4db72 | 858 | \f |
ede4db72 RS |
859 | /* Nonzero if any properties for DISPLAY and WINDOW |
860 | are on the list of what we are waiting for. */ | |
861 | ||
862 | static int | |
863 | waiting_for_other_props_on_window (display, window) | |
864 | Display *display; | |
865 | Window window; | |
866 | { | |
867 | struct prop_location *rest = property_change_wait_list; | |
868 | while (rest) | |
869 | if (rest->display == display && rest->window == window) | |
870 | return 1; | |
871 | else | |
872 | rest = rest->next; | |
873 | return 0; | |
874 | } | |
875 | ||
876 | /* Add an entry to the list of property changes we are waiting for. | |
877 | DISPLAY, WINDOW, PROPERTY, STATE describe what we will wait for. | |
878 | The return value is a number that uniquely identifies | |
879 | this awaited property change. */ | |
880 | ||
d1f21a66 | 881 | static struct prop_location * |
ede4db72 RS |
882 | expect_property_change (display, window, property, state) |
883 | Display *display; | |
884 | Window window; | |
885 | Lisp_Object property; | |
886 | int state; | |
887 | { | |
888 | struct prop_location *pl | |
889 | = (struct prop_location *) xmalloc (sizeof (struct prop_location)); | |
2f65feb6 | 890 | pl->identifier = ++prop_location_identifier; |
ede4db72 RS |
891 | pl->display = display; |
892 | pl->window = window; | |
893 | pl->property = property; | |
894 | pl->desired_state = state; | |
895 | pl->next = property_change_wait_list; | |
d1f21a66 | 896 | pl->arrived = 0; |
ede4db72 | 897 | property_change_wait_list = pl; |
d1f21a66 | 898 | return pl; |
ede4db72 RS |
899 | } |
900 | ||
901 | /* Delete an entry from the list of property changes we are waiting for. | |
2f65feb6 | 902 | IDENTIFIER is the number that uniquely identifies the entry. */ |
ede4db72 RS |
903 | |
904 | static void | |
d1f21a66 RS |
905 | unexpect_property_change (location) |
906 | struct prop_location *location; | |
ede4db72 RS |
907 | { |
908 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
909 | while (rest) | |
910 | { | |
d1f21a66 | 911 | if (rest == location) |
ede4db72 RS |
912 | { |
913 | if (prev) | |
914 | prev->next = rest->next; | |
915 | else | |
916 | property_change_wait_list = rest->next; | |
917 | xfree (rest); | |
918 | return; | |
919 | } | |
920 | prev = rest; | |
921 | rest = rest->next; | |
922 | } | |
923 | } | |
924 | ||
2f65feb6 RS |
925 | /* Remove the property change expectation element for IDENTIFIER. */ |
926 | ||
927 | static Lisp_Object | |
928 | wait_for_property_change_unwind (identifierval) | |
929 | Lisp_Object identifierval; | |
930 | { | |
c4898489 KH |
931 | unexpect_property_change ((struct prop_location *) |
932 | (XFASTINT (XCONS (identifierval)->car) << 16 | |
933 | | XFASTINT (XCONS (identifierval)->cdr))); | |
2f65feb6 RS |
934 | } |
935 | ||
ede4db72 | 936 | /* Actually wait for a property change. |
2f65feb6 | 937 | IDENTIFIER should be the value that expect_property_change returned. */ |
ede4db72 RS |
938 | |
939 | static void | |
d1f21a66 RS |
940 | wait_for_property_change (location) |
941 | struct prop_location *location; | |
ede4db72 | 942 | { |
2f65feb6 RS |
943 | int secs, usecs; |
944 | int count = specpdl_ptr - specpdl; | |
d1f21a66 RS |
945 | Lisp_Object tem; |
946 | ||
c4898489 KH |
947 | tem = Fcons (Qnil, Qnil); |
948 | XSETFASTINT (XCONS (tem)->car, (EMACS_UINT)location >> 16); | |
949 | XSETFASTINT (XCONS (tem)->cdr, (EMACS_UINT)location & 0xffff); | |
2f65feb6 RS |
950 | |
951 | /* Make sure to do unexpect_property_change if we quit or err. */ | |
d1f21a66 | 952 | record_unwind_protect (wait_for_property_change_unwind, tem); |
2f65feb6 | 953 | |
ede4db72 | 954 | XCONS (property_change_reply)->car = Qnil; |
2f65feb6 | 955 | |
afe1529d RS |
956 | property_change_reply_object = location; |
957 | /* If the event we are waiting for arrives beyond here, it will set | |
958 | property_change_reply, because property_change_reply_object says so. */ | |
d1f21a66 RS |
959 | if (! location->arrived) |
960 | { | |
d1f21a66 RS |
961 | secs = x_selection_timeout / 1000; |
962 | usecs = (x_selection_timeout % 1000) * 1000; | |
963 | wait_reading_process_input (secs, usecs, property_change_reply, 0); | |
964 | ||
965 | if (NILP (XCONS (property_change_reply)->car)) | |
966 | error ("timed out waiting for property-notify event"); | |
967 | } | |
2f65feb6 RS |
968 | |
969 | unbind_to (count, Qnil); | |
ede4db72 RS |
970 | } |
971 | ||
972 | /* Called from XTread_socket in response to a PropertyNotify event. */ | |
973 | ||
974 | void | |
975 | x_handle_property_notify (event) | |
976 | XPropertyEvent *event; | |
977 | { | |
978 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
979 | while (rest) | |
980 | { | |
981 | if (rest->property == event->atom | |
982 | && rest->window == event->window | |
983 | && rest->display == event->display | |
984 | && rest->desired_state == event->state) | |
985 | { | |
986 | #if 0 | |
987 | fprintf (stderr, "Saw expected prop-%s on %s\n", | |
988 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a | 989 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, event->display, |
ede4db72 RS |
990 | event->atom)) |
991 | ->name->data); | |
992 | #endif | |
993 | ||
d1f21a66 RS |
994 | rest->arrived = 1; |
995 | ||
ede4db72 RS |
996 | /* If this is the one wait_for_property_change is waiting for, |
997 | tell it to wake up. */ | |
d1f21a66 | 998 | if (rest == property_change_reply_object) |
ede4db72 RS |
999 | XCONS (property_change_reply)->car = Qt; |
1000 | ||
1001 | if (prev) | |
1002 | prev->next = rest->next; | |
1003 | else | |
1004 | property_change_wait_list = rest->next; | |
1005 | xfree (rest); | |
1006 | return; | |
1007 | } | |
1008 | prev = rest; | |
1009 | rest = rest->next; | |
1010 | } | |
1011 | #if 0 | |
1012 | fprintf (stderr, "Saw UNexpected prop-%s on %s\n", | |
1013 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a RS |
1014 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, |
1015 | event->display, event->atom)) | |
ede4db72 RS |
1016 | ->name->data); |
1017 | #endif | |
1018 | } | |
1019 | ||
1020 | ||
1021 | \f | |
1022 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1023 | ||
1024 | static Lisp_Object | |
1025 | fetch_multiple_target (event) | |
1026 | XSelectionRequestEvent *event; | |
1027 | { | |
1028 | Display *display = event->display; | |
1029 | Window window = event->requestor; | |
1030 | Atom target = event->target; | |
1031 | Atom selection_atom = event->selection; | |
1032 | int result; | |
1033 | ||
1034 | return | |
1035 | Fcons (QMULTIPLE, | |
1036 | x_get_window_property_as_lisp_data (display, window, target, | |
1037 | QMULTIPLE, selection_atom)); | |
1038 | } | |
1039 | ||
1040 | static Lisp_Object | |
1041 | copy_multiple_data (obj) | |
1042 | Lisp_Object obj; | |
1043 | { | |
1044 | Lisp_Object vec; | |
1045 | int i; | |
1046 | int size; | |
1047 | if (CONSP (obj)) | |
1048 | return Fcons (XCONS (obj)->car, copy_multiple_data (XCONS (obj)->cdr)); | |
1049 | ||
1050 | CHECK_VECTOR (obj, 0); | |
1051 | vec = Fmake_vector (size = XVECTOR (obj)->size, Qnil); | |
1052 | for (i = 0; i < size; i++) | |
1053 | { | |
1054 | Lisp_Object vec2 = XVECTOR (obj)->contents [i]; | |
1055 | CHECK_VECTOR (vec2, 0); | |
1056 | if (XVECTOR (vec2)->size != 2) | |
1057 | /* ??? Confusing error message */ | |
1058 | Fsignal (Qerror, Fcons (build_string ("vectors must be of length 2"), | |
1059 | Fcons (vec2, Qnil))); | |
1060 | XVECTOR (vec)->contents [i] = Fmake_vector (2, Qnil); | |
1061 | XVECTOR (XVECTOR (vec)->contents [i])->contents [0] | |
1062 | = XVECTOR (vec2)->contents [0]; | |
1063 | XVECTOR (XVECTOR (vec)->contents [i])->contents [1] | |
1064 | = XVECTOR (vec2)->contents [1]; | |
1065 | } | |
1066 | return vec; | |
1067 | } | |
1068 | ||
1069 | #endif | |
1070 | ||
1071 | \f | |
1072 | /* Variables for communication with x_handle_selection_notify. */ | |
1073 | static Atom reading_which_selection; | |
1074 | static Lisp_Object reading_selection_reply; | |
1075 | static Window reading_selection_window; | |
1076 | ||
1077 | /* Do protocol to read selection-data from the server. | |
1078 | Converts this to Lisp data and returns it. */ | |
1079 | ||
1080 | static Lisp_Object | |
1081 | x_get_foreign_selection (selection_symbol, target_type) | |
1082 | Lisp_Object selection_symbol, target_type; | |
1083 | { | |
7da64e5c | 1084 | Window requestor_window = FRAME_X_WINDOW (selected_frame); |
3834c318 | 1085 | Display *display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1086 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
7da64e5c | 1087 | Time requestor_time = last_event_timestamp; |
5c3a351a RS |
1088 | Atom target_property = dpyinfo->Xatom_EMACS_TMP; |
1089 | Atom selection_atom = symbol_to_x_atom (dpyinfo, display, selection_symbol); | |
ede4db72 | 1090 | Atom type_atom; |
80da0190 | 1091 | int secs, usecs; |
55b2d45d RS |
1092 | int count = specpdl_ptr - specpdl; |
1093 | Lisp_Object frame; | |
ede4db72 RS |
1094 | |
1095 | if (CONSP (target_type)) | |
5c3a351a | 1096 | type_atom = symbol_to_x_atom (dpyinfo, display, XCONS (target_type)->car); |
ede4db72 | 1097 | else |
5c3a351a | 1098 | type_atom = symbol_to_x_atom (dpyinfo, display, target_type); |
ede4db72 RS |
1099 | |
1100 | BLOCK_INPUT; | |
a7b24d46 | 1101 | x_catch_errors (display); |
ede4db72 RS |
1102 | XConvertSelection (display, selection_atom, type_atom, target_property, |
1103 | requestor_window, requestor_time); | |
5c3a351a | 1104 | XFlush (display); |
ede4db72 RS |
1105 | |
1106 | /* Prepare to block until the reply has been read. */ | |
1107 | reading_selection_window = requestor_window; | |
1108 | reading_which_selection = selection_atom; | |
1109 | XCONS (reading_selection_reply)->car = Qnil; | |
55b2d45d RS |
1110 | |
1111 | frame = some_frame_on_display (dpyinfo); | |
1112 | ||
1113 | /* If the display no longer has frames, we can't expect | |
1114 | to get many more selection requests from it, so don't | |
1115 | bother trying to queue them. */ | |
1116 | if (!NILP (frame)) | |
1117 | { | |
1118 | x_start_queuing_selection_requests (display); | |
1119 | ||
1120 | record_unwind_protect (queue_selection_requests_unwind, | |
1121 | frame); | |
1122 | } | |
ede4db72 RS |
1123 | UNBLOCK_INPUT; |
1124 | ||
80da0190 RS |
1125 | /* This allows quits. Also, don't wait forever. */ |
1126 | secs = x_selection_timeout / 1000; | |
1127 | usecs = (x_selection_timeout % 1000) * 1000; | |
1128 | wait_reading_process_input (secs, usecs, reading_selection_reply, 0); | |
ede4db72 | 1129 | |
7c6b2ea4 | 1130 | BLOCK_INPUT; |
a7b24d46 RS |
1131 | x_check_errors (display, "Cannot get selection: %s"); |
1132 | x_uncatch_errors (display); | |
55b2d45d | 1133 | unbind_to (count, Qnil); |
7c6b2ea4 RS |
1134 | UNBLOCK_INPUT; |
1135 | ||
ede4db72 RS |
1136 | if (NILP (XCONS (reading_selection_reply)->car)) |
1137 | error ("timed out waiting for reply from selection owner"); | |
1138 | ||
1139 | /* Otherwise, the selection is waiting for us on the requested property. */ | |
1140 | return | |
1141 | x_get_window_property_as_lisp_data (display, requestor_window, | |
1142 | target_property, target_type, | |
1143 | selection_atom); | |
1144 | } | |
1145 | \f | |
1146 | /* Subroutines of x_get_window_property_as_lisp_data */ | |
1147 | ||
1148 | static void | |
1149 | x_get_window_property (display, window, property, data_ret, bytes_ret, | |
1150 | actual_type_ret, actual_format_ret, actual_size_ret, | |
1151 | delete_p) | |
1152 | Display *display; | |
1153 | Window window; | |
1154 | Atom property; | |
1155 | unsigned char **data_ret; | |
1156 | int *bytes_ret; | |
1157 | Atom *actual_type_ret; | |
1158 | int *actual_format_ret; | |
1159 | unsigned long *actual_size_ret; | |
1160 | int delete_p; | |
1161 | { | |
1162 | int total_size; | |
1163 | unsigned long bytes_remaining; | |
1164 | int offset = 0; | |
1165 | unsigned char *tmp_data = 0; | |
1166 | int result; | |
1167 | int buffer_size = SELECTION_QUANTUM (display); | |
1168 | if (buffer_size > MAX_SELECTION_QUANTUM) buffer_size = MAX_SELECTION_QUANTUM; | |
1169 | ||
1170 | BLOCK_INPUT; | |
1171 | /* First probe the thing to find out how big it is. */ | |
1172 | result = XGetWindowProperty (display, window, property, | |
137edb72 | 1173 | 0L, 0L, False, AnyPropertyType, |
ede4db72 RS |
1174 | actual_type_ret, actual_format_ret, |
1175 | actual_size_ret, | |
1176 | &bytes_remaining, &tmp_data); | |
ede4db72 RS |
1177 | if (result != Success) |
1178 | { | |
2f65feb6 | 1179 | UNBLOCK_INPUT; |
ede4db72 RS |
1180 | *data_ret = 0; |
1181 | *bytes_ret = 0; | |
1182 | return; | |
1183 | } | |
2f65feb6 | 1184 | xfree ((char *) tmp_data); |
ede4db72 RS |
1185 | |
1186 | if (*actual_type_ret == None || *actual_format_ret == 0) | |
1187 | { | |
2f65feb6 | 1188 | UNBLOCK_INPUT; |
ede4db72 RS |
1189 | return; |
1190 | } | |
1191 | ||
1192 | total_size = bytes_remaining + 1; | |
1193 | *data_ret = (unsigned char *) xmalloc (total_size); | |
1194 | ||
1195 | /* Now read, until weve gotten it all. */ | |
ede4db72 RS |
1196 | while (bytes_remaining) |
1197 | { | |
1198 | #if 0 | |
1199 | int last = bytes_remaining; | |
1200 | #endif | |
1201 | result | |
1202 | = XGetWindowProperty (display, window, property, | |
137edb72 | 1203 | (long)offset/4, (long)buffer_size/4, |
2f65feb6 | 1204 | False, |
ede4db72 RS |
1205 | AnyPropertyType, |
1206 | actual_type_ret, actual_format_ret, | |
1207 | actual_size_ret, &bytes_remaining, &tmp_data); | |
1208 | #if 0 | |
1209 | fprintf (stderr, "<< read %d\n", last-bytes_remaining); | |
1210 | #endif | |
1211 | /* If this doesn't return Success at this point, it means that | |
1212 | some clod deleted the selection while we were in the midst of | |
1213 | reading it. Deal with that, I guess.... | |
1214 | */ | |
1215 | if (result != Success) break; | |
1216 | *actual_size_ret *= *actual_format_ret / 8; | |
1217 | bcopy (tmp_data, (*data_ret) + offset, *actual_size_ret); | |
1218 | offset += *actual_size_ret; | |
2f65feb6 | 1219 | xfree ((char *) tmp_data); |
ede4db72 | 1220 | } |
2f65feb6 | 1221 | |
5c3a351a | 1222 | XFlush (display); |
ede4db72 RS |
1223 | UNBLOCK_INPUT; |
1224 | *bytes_ret = offset; | |
1225 | } | |
1226 | \f | |
1227 | static void | |
1228 | receive_incremental_selection (display, window, property, target_type, | |
1229 | min_size_bytes, data_ret, size_bytes_ret, | |
1230 | type_ret, format_ret, size_ret) | |
1231 | Display *display; | |
1232 | Window window; | |
1233 | Atom property; | |
1234 | Lisp_Object target_type; /* for error messages only */ | |
1235 | unsigned int min_size_bytes; | |
1236 | unsigned char **data_ret; | |
1237 | int *size_bytes_ret; | |
1238 | Atom *type_ret; | |
1239 | unsigned long *size_ret; | |
1240 | int *format_ret; | |
1241 | { | |
1242 | int offset = 0; | |
d1f21a66 | 1243 | struct prop_location *wait_object; |
ede4db72 RS |
1244 | *size_bytes_ret = min_size_bytes; |
1245 | *data_ret = (unsigned char *) xmalloc (*size_bytes_ret); | |
1246 | #if 0 | |
1247 | fprintf (stderr, "\nread INCR %d\n", min_size_bytes); | |
1248 | #endif | |
2f65feb6 RS |
1249 | |
1250 | /* At this point, we have read an INCR property. | |
1251 | Delete the property to ack it. | |
1252 | (But first, prepare to receive the next event in this handshake.) | |
ede4db72 RS |
1253 | |
1254 | Now, we must loop, waiting for the sending window to put a value on | |
1255 | that property, then reading the property, then deleting it to ack. | |
1256 | We are done when the sender places a property of length 0. | |
1257 | */ | |
2f65feb6 RS |
1258 | BLOCK_INPUT; |
1259 | XSelectInput (display, window, STANDARD_EVENT_SET | PropertyChangeMask); | |
1260 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1261 | wait_object = expect_property_change (display, window, property, |
1262 | PropertyNewValue); | |
5c3a351a | 1263 | XFlush (display); |
2f65feb6 RS |
1264 | UNBLOCK_INPUT; |
1265 | ||
ede4db72 RS |
1266 | while (1) |
1267 | { | |
1268 | unsigned char *tmp_data; | |
1269 | int tmp_size_bytes; | |
d1f21a66 | 1270 | wait_for_property_change (wait_object); |
ede4db72 RS |
1271 | /* expect it again immediately, because x_get_window_property may |
1272 | .. no it wont, I dont get it. | |
1273 | .. Ok, I get it now, the Xt code that implements INCR is broken. | |
1274 | */ | |
ede4db72 RS |
1275 | x_get_window_property (display, window, property, |
1276 | &tmp_data, &tmp_size_bytes, | |
1277 | type_ret, format_ret, size_ret, 1); | |
1278 | ||
1279 | if (tmp_size_bytes == 0) /* we're done */ | |
1280 | { | |
1281 | #if 0 | |
1282 | fprintf (stderr, " read INCR done\n"); | |
1283 | #endif | |
2f65feb6 RS |
1284 | if (! waiting_for_other_props_on_window (display, window)) |
1285 | XSelectInput (display, window, STANDARD_EVENT_SET); | |
d1f21a66 | 1286 | unexpect_property_change (wait_object); |
ede4db72 RS |
1287 | if (tmp_data) xfree (tmp_data); |
1288 | break; | |
1289 | } | |
2f65feb6 RS |
1290 | |
1291 | BLOCK_INPUT; | |
1292 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1293 | wait_object = expect_property_change (display, window, property, |
1294 | PropertyNewValue); | |
5c3a351a | 1295 | XFlush (display); |
2f65feb6 RS |
1296 | UNBLOCK_INPUT; |
1297 | ||
ede4db72 RS |
1298 | #if 0 |
1299 | fprintf (stderr, " read INCR %d\n", tmp_size_bytes); | |
1300 | #endif | |
1301 | if (*size_bytes_ret < offset + tmp_size_bytes) | |
1302 | { | |
1303 | #if 0 | |
1304 | fprintf (stderr, " read INCR realloc %d -> %d\n", | |
1305 | *size_bytes_ret, offset + tmp_size_bytes); | |
1306 | #endif | |
1307 | *size_bytes_ret = offset + tmp_size_bytes; | |
1308 | *data_ret = (unsigned char *) xrealloc (*data_ret, *size_bytes_ret); | |
1309 | } | |
018cfa07 | 1310 | bcopy (tmp_data, (*data_ret) + offset, tmp_size_bytes); |
ede4db72 RS |
1311 | offset += tmp_size_bytes; |
1312 | xfree (tmp_data); | |
1313 | } | |
1314 | } | |
1315 | \f | |
1316 | /* Once a requested selection is "ready" (we got a SelectionNotify event), | |
1317 | fetch value from property PROPERTY of X window WINDOW on display DISPLAY. | |
1318 | TARGET_TYPE and SELECTION_ATOM are used in error message if this fails. */ | |
1319 | ||
1320 | static Lisp_Object | |
1321 | x_get_window_property_as_lisp_data (display, window, property, target_type, | |
1322 | selection_atom) | |
1323 | Display *display; | |
1324 | Window window; | |
1325 | Atom property; | |
1326 | Lisp_Object target_type; /* for error messages only */ | |
1327 | Atom selection_atom; /* for error messages only */ | |
1328 | { | |
1329 | Atom actual_type; | |
1330 | int actual_format; | |
1331 | unsigned long actual_size; | |
1332 | unsigned char *data = 0; | |
1333 | int bytes = 0; | |
1334 | Lisp_Object val; | |
5c3a351a | 1335 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 RS |
1336 | |
1337 | x_get_window_property (display, window, property, &data, &bytes, | |
1338 | &actual_type, &actual_format, &actual_size, 1); | |
1339 | if (! data) | |
1340 | { | |
1341 | int there_is_a_selection_owner; | |
1342 | BLOCK_INPUT; | |
1343 | there_is_a_selection_owner | |
1344 | = XGetSelectionOwner (display, selection_atom); | |
1345 | UNBLOCK_INPUT; | |
1346 | while (1) /* Note debugger can no longer return, so this is obsolete */ | |
1347 | Fsignal (Qerror, | |
1348 | there_is_a_selection_owner ? | |
1349 | Fcons (build_string ("selection owner couldn't convert"), | |
1350 | actual_type | |
1351 | ? Fcons (target_type, | |
5c3a351a RS |
1352 | Fcons (x_atom_to_symbol (dpyinfo, display, |
1353 | actual_type), | |
ede4db72 RS |
1354 | Qnil)) |
1355 | : Fcons (target_type, Qnil)) | |
1356 | : Fcons (build_string ("no selection"), | |
5c3a351a RS |
1357 | Fcons (x_atom_to_symbol (dpyinfo, display, |
1358 | selection_atom), | |
ede4db72 RS |
1359 | Qnil))); |
1360 | } | |
1361 | ||
5c3a351a | 1362 | if (actual_type == dpyinfo->Xatom_INCR) |
ede4db72 RS |
1363 | { |
1364 | /* That wasn't really the data, just the beginning. */ | |
1365 | ||
1366 | unsigned int min_size_bytes = * ((unsigned int *) data); | |
1367 | BLOCK_INPUT; | |
1368 | XFree ((char *) data); | |
1369 | UNBLOCK_INPUT; | |
1370 | receive_incremental_selection (display, window, property, target_type, | |
1371 | min_size_bytes, &data, &bytes, | |
1372 | &actual_type, &actual_format, | |
1373 | &actual_size); | |
1374 | } | |
1375 | ||
2f65feb6 RS |
1376 | BLOCK_INPUT; |
1377 | XDeleteProperty (display, window, property); | |
5c3a351a | 1378 | XFlush (display); |
2f65feb6 RS |
1379 | UNBLOCK_INPUT; |
1380 | ||
ede4db72 RS |
1381 | /* It's been read. Now convert it to a lisp object in some semi-rational |
1382 | manner. */ | |
1383 | val = selection_data_to_lisp_data (display, data, bytes, | |
1384 | actual_type, actual_format); | |
1385 | ||
1386 | xfree ((char *) data); | |
1387 | return val; | |
1388 | } | |
1389 | \f | |
1390 | /* These functions convert from the selection data read from the server into | |
1391 | something that we can use from Lisp, and vice versa. | |
1392 | ||
1393 | Type: Format: Size: Lisp Type: | |
1394 | ----- ------- ----- ----------- | |
1395 | * 8 * String | |
1396 | ATOM 32 1 Symbol | |
1397 | ATOM 32 > 1 Vector of Symbols | |
1398 | * 16 1 Integer | |
1399 | * 16 > 1 Vector of Integers | |
1400 | * 32 1 if <=16 bits: Integer | |
1401 | if > 16 bits: Cons of top16, bot16 | |
1402 | * 32 > 1 Vector of the above | |
1403 | ||
1404 | When converting a Lisp number to C, it is assumed to be of format 16 if | |
1405 | it is an integer, and of format 32 if it is a cons of two integers. | |
1406 | ||
1407 | When converting a vector of numbers from Lisp to C, it is assumed to be | |
1408 | of format 16 if every element in the vector is an integer, and is assumed | |
1409 | to be of format 32 if any element is a cons of two integers. | |
1410 | ||
1411 | When converting an object to C, it may be of the form (SYMBOL . <data>) | |
1412 | where SYMBOL is what we should claim that the type is. Format and | |
1413 | representation are as above. */ | |
1414 | ||
1415 | ||
1416 | ||
1417 | static Lisp_Object | |
1418 | selection_data_to_lisp_data (display, data, size, type, format) | |
1419 | Display *display; | |
1420 | unsigned char *data; | |
1421 | Atom type; | |
1422 | int size, format; | |
1423 | { | |
5c3a351a | 1424 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1425 | |
5c3a351a | 1426 | if (type == dpyinfo->Xatom_NULL) |
ede4db72 RS |
1427 | return QNULL; |
1428 | ||
1429 | /* Convert any 8-bit data to a string, for compactness. */ | |
1430 | else if (format == 8) | |
1431 | return make_string ((char *) data, size); | |
1432 | ||
1433 | /* Convert a single atom to a Lisp_Symbol. Convert a set of atoms to | |
1434 | a vector of symbols. | |
1435 | */ | |
1436 | else if (type == XA_ATOM) | |
1437 | { | |
1438 | int i; | |
1439 | if (size == sizeof (Atom)) | |
5c3a351a | 1440 | return x_atom_to_symbol (dpyinfo, display, *((Atom *) data)); |
ede4db72 RS |
1441 | else |
1442 | { | |
1443 | Lisp_Object v = Fmake_vector (size / sizeof (Atom), 0); | |
1444 | for (i = 0; i < size / sizeof (Atom); i++) | |
5c3a351a RS |
1445 | Faset (v, i, x_atom_to_symbol (dpyinfo, display, |
1446 | ((Atom *) data) [i])); | |
ede4db72 RS |
1447 | return v; |
1448 | } | |
1449 | } | |
1450 | ||
1451 | /* Convert a single 16 or small 32 bit number to a Lisp_Int. | |
1452 | If the number is > 16 bits, convert it to a cons of integers, | |
1453 | 16 bits in each half. | |
1454 | */ | |
1455 | else if (format == 32 && size == sizeof (long)) | |
1456 | return long_to_cons (((unsigned long *) data) [0]); | |
1457 | else if (format == 16 && size == sizeof (short)) | |
1458 | return make_number ((int) (((unsigned short *) data) [0])); | |
1459 | ||
1460 | /* Convert any other kind of data to a vector of numbers, represented | |
1461 | as above (as an integer, or a cons of two 16 bit integers.) | |
1462 | */ | |
1463 | else if (format == 16) | |
1464 | { | |
1465 | int i; | |
1466 | Lisp_Object v = Fmake_vector (size / 4, 0); | |
1467 | for (i = 0; i < size / 4; i++) | |
1468 | { | |
1469 | int j = (int) ((unsigned short *) data) [i]; | |
1470 | Faset (v, i, make_number (j)); | |
1471 | } | |
1472 | return v; | |
1473 | } | |
1474 | else | |
1475 | { | |
1476 | int i; | |
1477 | Lisp_Object v = Fmake_vector (size / 4, 0); | |
1478 | for (i = 0; i < size / 4; i++) | |
1479 | { | |
1480 | unsigned long j = ((unsigned long *) data) [i]; | |
1481 | Faset (v, i, long_to_cons (j)); | |
1482 | } | |
1483 | return v; | |
1484 | } | |
1485 | } | |
1486 | ||
1487 | ||
1488 | static void | |
1489 | lisp_data_to_selection_data (display, obj, | |
aca39f42 RS |
1490 | data_ret, type_ret, size_ret, |
1491 | format_ret, nofree_ret) | |
ede4db72 RS |
1492 | Display *display; |
1493 | Lisp_Object obj; | |
1494 | unsigned char **data_ret; | |
1495 | Atom *type_ret; | |
1496 | unsigned int *size_ret; | |
1497 | int *format_ret; | |
aca39f42 | 1498 | int *nofree_ret; |
ede4db72 RS |
1499 | { |
1500 | Lisp_Object type = Qnil; | |
5c3a351a | 1501 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
aca39f42 RS |
1502 | |
1503 | *nofree_ret = 0; | |
1504 | ||
ede4db72 RS |
1505 | if (CONSP (obj) && SYMBOLP (XCONS (obj)->car)) |
1506 | { | |
1507 | type = XCONS (obj)->car; | |
1508 | obj = XCONS (obj)->cdr; | |
1509 | if (CONSP (obj) && NILP (XCONS (obj)->cdr)) | |
1510 | obj = XCONS (obj)->car; | |
1511 | } | |
1512 | ||
1513 | if (EQ (obj, QNULL) || (EQ (type, QNULL))) | |
1514 | { /* This is not the same as declining */ | |
1515 | *format_ret = 32; | |
1516 | *size_ret = 0; | |
1517 | *data_ret = 0; | |
1518 | type = QNULL; | |
1519 | } | |
1520 | else if (STRINGP (obj)) | |
1521 | { | |
1522 | *format_ret = 8; | |
1523 | *size_ret = XSTRING (obj)->size; | |
aca39f42 RS |
1524 | *data_ret = XSTRING (obj)->data; |
1525 | *nofree_ret = 1; | |
ede4db72 RS |
1526 | if (NILP (type)) type = QSTRING; |
1527 | } | |
1528 | else if (SYMBOLP (obj)) | |
1529 | { | |
1530 | *format_ret = 32; | |
1531 | *size_ret = 1; | |
1532 | *data_ret = (unsigned char *) xmalloc (sizeof (Atom) + 1); | |
1533 | (*data_ret) [sizeof (Atom)] = 0; | |
5c3a351a | 1534 | (*(Atom **) data_ret) [0] = symbol_to_x_atom (dpyinfo, display, obj); |
ede4db72 RS |
1535 | if (NILP (type)) type = QATOM; |
1536 | } | |
7da64e5c | 1537 | else if (INTEGERP (obj) |
ede4db72 RS |
1538 | && XINT (obj) < 0xFFFF |
1539 | && XINT (obj) > -0xFFFF) | |
1540 | { | |
1541 | *format_ret = 16; | |
1542 | *size_ret = 1; | |
1543 | *data_ret = (unsigned char *) xmalloc (sizeof (short) + 1); | |
1544 | (*data_ret) [sizeof (short)] = 0; | |
1545 | (*(short **) data_ret) [0] = (short) XINT (obj); | |
1546 | if (NILP (type)) type = QINTEGER; | |
1547 | } | |
a87ed99c RS |
1548 | else if (INTEGERP (obj) |
1549 | || (CONSP (obj) && INTEGERP (XCONS (obj)->car) | |
1550 | && (INTEGERP (XCONS (obj)->cdr) | |
1551 | || (CONSP (XCONS (obj)->cdr) | |
1552 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car))))) | |
ede4db72 RS |
1553 | { |
1554 | *format_ret = 32; | |
1555 | *size_ret = 1; | |
1556 | *data_ret = (unsigned char *) xmalloc (sizeof (long) + 1); | |
1557 | (*data_ret) [sizeof (long)] = 0; | |
1558 | (*(unsigned long **) data_ret) [0] = cons_to_long (obj); | |
1559 | if (NILP (type)) type = QINTEGER; | |
1560 | } | |
1561 | else if (VECTORP (obj)) | |
1562 | { | |
1563 | /* Lisp_Vectors may represent a set of ATOMs; | |
1564 | a set of 16 or 32 bit INTEGERs; | |
1565 | or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...] | |
1566 | */ | |
1567 | int i; | |
1568 | ||
1569 | if (SYMBOLP (XVECTOR (obj)->contents [0])) | |
1570 | /* This vector is an ATOM set */ | |
1571 | { | |
1572 | if (NILP (type)) type = QATOM; | |
1573 | *size_ret = XVECTOR (obj)->size; | |
1574 | *format_ret = 32; | |
1575 | *data_ret = (unsigned char *) xmalloc ((*size_ret) * sizeof (Atom)); | |
1576 | for (i = 0; i < *size_ret; i++) | |
1577 | if (SYMBOLP (XVECTOR (obj)->contents [i])) | |
1578 | (*(Atom **) data_ret) [i] | |
5c3a351a | 1579 | = symbol_to_x_atom (dpyinfo, display, XVECTOR (obj)->contents [i]); |
ede4db72 RS |
1580 | else |
1581 | Fsignal (Qerror, /* Qselection_error */ | |
1582 | Fcons (build_string | |
1583 | ("all elements of selection vector must have same type"), | |
1584 | Fcons (obj, Qnil))); | |
1585 | } | |
1586 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1587 | else if (VECTORP (XVECTOR (obj)->contents [0])) | |
1588 | /* This vector is an ATOM_PAIR set */ | |
1589 | { | |
1590 | if (NILP (type)) type = QATOM_PAIR; | |
1591 | *size_ret = XVECTOR (obj)->size; | |
1592 | *format_ret = 32; | |
1593 | *data_ret = (unsigned char *) | |
1594 | xmalloc ((*size_ret) * sizeof (Atom) * 2); | |
1595 | for (i = 0; i < *size_ret; i++) | |
1596 | if (VECTORP (XVECTOR (obj)->contents [i])) | |
1597 | { | |
1598 | Lisp_Object pair = XVECTOR (obj)->contents [i]; | |
1599 | if (XVECTOR (pair)->size != 2) | |
1600 | Fsignal (Qerror, | |
1601 | Fcons (build_string | |
1602 | ("elements of the vector must be vectors of exactly two elements"), | |
1603 | Fcons (pair, Qnil))); | |
1604 | ||
1605 | (*(Atom **) data_ret) [i * 2] | |
5c3a351a RS |
1606 | = symbol_to_x_atom (dpyinfo, display, |
1607 | XVECTOR (pair)->contents [0]); | |
ede4db72 | 1608 | (*(Atom **) data_ret) [(i * 2) + 1] |
5c3a351a RS |
1609 | = symbol_to_x_atom (dpyinfo, display, |
1610 | XVECTOR (pair)->contents [1]); | |
ede4db72 RS |
1611 | } |
1612 | else | |
1613 | Fsignal (Qerror, | |
1614 | Fcons (build_string | |
1615 | ("all elements of the vector must be of the same type"), | |
1616 | Fcons (obj, Qnil))); | |
1617 | ||
1618 | } | |
1619 | #endif | |
1620 | else | |
1621 | /* This vector is an INTEGER set, or something like it */ | |
1622 | { | |
1623 | *size_ret = XVECTOR (obj)->size; | |
1624 | if (NILP (type)) type = QINTEGER; | |
1625 | *format_ret = 16; | |
1626 | for (i = 0; i < *size_ret; i++) | |
1627 | if (CONSP (XVECTOR (obj)->contents [i])) | |
1628 | *format_ret = 32; | |
7da64e5c | 1629 | else if (!INTEGERP (XVECTOR (obj)->contents [i])) |
ede4db72 RS |
1630 | Fsignal (Qerror, /* Qselection_error */ |
1631 | Fcons (build_string | |
1632 | ("elements of selection vector must be integers or conses of integers"), | |
1633 | Fcons (obj, Qnil))); | |
1634 | ||
1635 | *data_ret = (unsigned char *) xmalloc (*size_ret * (*format_ret/8)); | |
1636 | for (i = 0; i < *size_ret; i++) | |
1637 | if (*format_ret == 32) | |
1638 | (*((unsigned long **) data_ret)) [i] | |
1639 | = cons_to_long (XVECTOR (obj)->contents [i]); | |
1640 | else | |
1641 | (*((unsigned short **) data_ret)) [i] | |
1642 | = (unsigned short) cons_to_long (XVECTOR (obj)->contents [i]); | |
1643 | } | |
1644 | } | |
1645 | else | |
1646 | Fsignal (Qerror, /* Qselection_error */ | |
1647 | Fcons (build_string ("unrecognised selection data"), | |
1648 | Fcons (obj, Qnil))); | |
1649 | ||
5c3a351a | 1650 | *type_ret = symbol_to_x_atom (dpyinfo, display, type); |
ede4db72 RS |
1651 | } |
1652 | ||
1653 | static Lisp_Object | |
1654 | clean_local_selection_data (obj) | |
1655 | Lisp_Object obj; | |
1656 | { | |
1657 | if (CONSP (obj) | |
7da64e5c | 1658 | && INTEGERP (XCONS (obj)->car) |
ede4db72 | 1659 | && CONSP (XCONS (obj)->cdr) |
7da64e5c | 1660 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car) |
ede4db72 RS |
1661 | && NILP (XCONS (XCONS (obj)->cdr)->cdr)) |
1662 | obj = Fcons (XCONS (obj)->car, XCONS (obj)->cdr); | |
1663 | ||
1664 | if (CONSP (obj) | |
7da64e5c RS |
1665 | && INTEGERP (XCONS (obj)->car) |
1666 | && INTEGERP (XCONS (obj)->cdr)) | |
ede4db72 RS |
1667 | { |
1668 | if (XINT (XCONS (obj)->car) == 0) | |
1669 | return XCONS (obj)->cdr; | |
1670 | if (XINT (XCONS (obj)->car) == -1) | |
1671 | return make_number (- XINT (XCONS (obj)->cdr)); | |
1672 | } | |
1673 | if (VECTORP (obj)) | |
1674 | { | |
1675 | int i; | |
1676 | int size = XVECTOR (obj)->size; | |
1677 | Lisp_Object copy; | |
1678 | if (size == 1) | |
1679 | return clean_local_selection_data (XVECTOR (obj)->contents [0]); | |
1680 | copy = Fmake_vector (size, Qnil); | |
1681 | for (i = 0; i < size; i++) | |
1682 | XVECTOR (copy)->contents [i] | |
1683 | = clean_local_selection_data (XVECTOR (obj)->contents [i]); | |
1684 | return copy; | |
1685 | } | |
1686 | return obj; | |
1687 | } | |
1688 | \f | |
1689 | /* Called from XTread_socket to handle SelectionNotify events. | |
1690 | If it's the selection we are waiting for, stop waiting. */ | |
1691 | ||
1692 | void | |
1693 | x_handle_selection_notify (event) | |
1694 | XSelectionEvent *event; | |
1695 | { | |
1696 | if (event->requestor != reading_selection_window) | |
1697 | return; | |
1698 | if (event->selection != reading_which_selection) | |
1699 | return; | |
1700 | ||
1701 | XCONS (reading_selection_reply)->car = Qt; | |
1702 | } | |
1703 | ||
1704 | \f | |
1705 | DEFUN ("x-own-selection-internal", | |
1706 | Fx_own_selection_internal, Sx_own_selection_internal, | |
1707 | 2, 2, 0, | |
1708 | "Assert an X selection of the given TYPE with the given VALUE.\n\ | |
1709 | TYPE is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1710 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1711 | VALUE is typically a string, or a cons of two markers, but may be\n\ | |
a87ed99c | 1712 | anything that the functions on `selection-converter-alist' know about.") |
ede4db72 RS |
1713 | (selection_name, selection_value) |
1714 | Lisp_Object selection_name, selection_value; | |
1715 | { | |
703e0710 | 1716 | check_x (); |
ede4db72 RS |
1717 | CHECK_SYMBOL (selection_name, 0); |
1718 | if (NILP (selection_value)) error ("selection-value may not be nil."); | |
1719 | x_own_selection (selection_name, selection_value); | |
1720 | return selection_value; | |
1721 | } | |
1722 | ||
1723 | ||
1724 | /* Request the selection value from the owner. If we are the owner, | |
1725 | simply return our selection value. If we are not the owner, this | |
1726 | will block until all of the data has arrived. */ | |
1727 | ||
1728 | DEFUN ("x-get-selection-internal", | |
1729 | Fx_get_selection_internal, Sx_get_selection_internal, 2, 2, 0, | |
1730 | "Return text selected from some X window.\n\ | |
1731 | SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1732 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
a87ed99c | 1733 | TYPE is the type of data desired, typically `STRING'.") |
ede4db72 RS |
1734 | (selection_symbol, target_type) |
1735 | Lisp_Object selection_symbol, target_type; | |
1736 | { | |
1737 | Lisp_Object val = Qnil; | |
1738 | struct gcpro gcpro1, gcpro2; | |
1739 | GCPRO2 (target_type, val); /* we store newly consed data into these */ | |
703e0710 | 1740 | check_x (); |
ede4db72 RS |
1741 | CHECK_SYMBOL (selection_symbol, 0); |
1742 | ||
1743 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1744 | if (CONSP (target_type) | |
1745 | && XCONS (target_type)->car == QMULTIPLE) | |
1746 | { | |
1747 | CHECK_VECTOR (XCONS (target_type)->cdr, 0); | |
1748 | /* So we don't destructively modify this... */ | |
1749 | target_type = copy_multiple_data (target_type); | |
1750 | } | |
1751 | else | |
1752 | #endif | |
1753 | CHECK_SYMBOL (target_type, 0); | |
1754 | ||
1755 | val = x_get_local_selection (selection_symbol, target_type); | |
1756 | ||
1757 | if (NILP (val)) | |
1758 | { | |
1759 | val = x_get_foreign_selection (selection_symbol, target_type); | |
1760 | goto DONE; | |
1761 | } | |
1762 | ||
1763 | if (CONSP (val) | |
1764 | && SYMBOLP (XCONS (val)->car)) | |
1765 | { | |
1766 | val = XCONS (val)->cdr; | |
1767 | if (CONSP (val) && NILP (XCONS (val)->cdr)) | |
1768 | val = XCONS (val)->car; | |
1769 | } | |
1770 | val = clean_local_selection_data (val); | |
1771 | DONE: | |
1772 | UNGCPRO; | |
1773 | return val; | |
1774 | } | |
1775 | ||
1776 | DEFUN ("x-disown-selection-internal", | |
1777 | Fx_disown_selection_internal, Sx_disown_selection_internal, 1, 2, 0, | |
a87ed99c RS |
1778 | "If we own the selection SELECTION, disown it.\n\ |
1779 | Disowning it means there is no such selection.") | |
ede4db72 RS |
1780 | (selection, time) |
1781 | Lisp_Object selection; | |
1782 | Lisp_Object time; | |
1783 | { | |
ede4db72 RS |
1784 | Time timestamp; |
1785 | Atom selection_atom; | |
1786 | XSelectionClearEvent event; | |
3834c318 | 1787 | Display *display; |
5c3a351a | 1788 | struct x_display_info *dpyinfo; |
ede4db72 | 1789 | |
703e0710 | 1790 | check_x (); |
3834c318 | 1791 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1792 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
ede4db72 RS |
1793 | CHECK_SYMBOL (selection, 0); |
1794 | if (NILP (time)) | |
7da64e5c | 1795 | timestamp = last_event_timestamp; |
ede4db72 RS |
1796 | else |
1797 | timestamp = cons_to_long (time); | |
1798 | ||
1799 | if (NILP (assq_no_quit (selection, Vselection_alist))) | |
1800 | return Qnil; /* Don't disown the selection when we're not the owner. */ | |
1801 | ||
5c3a351a | 1802 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection); |
ede4db72 RS |
1803 | |
1804 | BLOCK_INPUT; | |
1805 | XSetSelectionOwner (display, selection_atom, None, timestamp); | |
1806 | UNBLOCK_INPUT; | |
1807 | ||
eb8c3be9 | 1808 | /* It doesn't seem to be guaranteed that a SelectionClear event will be |
ede4db72 RS |
1809 | generated for a window which owns the selection when that window sets |
1810 | the selection owner to None. The NCD server does, the MIT Sun4 server | |
1811 | doesn't. So we synthesize one; this means we might get two, but | |
1812 | that's ok, because the second one won't have any effect. */ | |
8d47f8c4 RS |
1813 | SELECTION_EVENT_DISPLAY (&event) = display; |
1814 | SELECTION_EVENT_SELECTION (&event) = selection_atom; | |
1815 | SELECTION_EVENT_TIME (&event) = timestamp; | |
ede4db72 RS |
1816 | x_handle_selection_clear (&event); |
1817 | ||
1818 | return Qt; | |
1819 | } | |
1820 | ||
a87ed99c RS |
1821 | /* Get rid of all the selections in buffer BUFFER. |
1822 | This is used when we kill a buffer. */ | |
1823 | ||
1824 | void | |
1825 | x_disown_buffer_selections (buffer) | |
1826 | Lisp_Object buffer; | |
1827 | { | |
1828 | Lisp_Object tail; | |
1829 | struct buffer *buf = XBUFFER (buffer); | |
1830 | ||
1831 | for (tail = Vselection_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1832 | { | |
1833 | Lisp_Object elt, value; | |
1834 | elt = XCONS (tail)->car; | |
1835 | value = XCONS (elt)->cdr; | |
1836 | if (CONSP (value) && MARKERP (XCONS (value)->car) | |
1837 | && XMARKER (XCONS (value)->car)->buffer == buf) | |
1838 | Fx_disown_selection_internal (XCONS (elt)->car, Qnil); | |
1839 | } | |
1840 | } | |
ede4db72 RS |
1841 | |
1842 | DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p, | |
1843 | 0, 1, 0, | |
a87ed99c | 1844 | "Whether the current Emacs process owns the given X Selection.\n\ |
ede4db72 RS |
1845 | The arg should be the name of the selection in question, typically one of\n\ |
1846 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1847 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1848 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
1849 | and t is the same as `SECONDARY'.)") | |
1850 | (selection) | |
1851 | Lisp_Object selection; | |
1852 | { | |
703e0710 | 1853 | check_x (); |
ede4db72 RS |
1854 | CHECK_SYMBOL (selection, 0); |
1855 | if (EQ (selection, Qnil)) selection = QPRIMARY; | |
1856 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
1857 | ||
1858 | if (NILP (Fassq (selection, Vselection_alist))) | |
1859 | return Qnil; | |
1860 | return Qt; | |
1861 | } | |
1862 | ||
1863 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
1864 | 0, 1, 0, | |
1865 | "Whether there is an owner for the given X Selection.\n\ | |
1866 | The arg should be the name of the selection in question, typically one of\n\ | |
1867 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1868 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1869 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
1870 | and t is the same as `SECONDARY'.)") | |
1871 | (selection) | |
1872 | Lisp_Object selection; | |
1873 | { | |
1874 | Window owner; | |
356ba514 | 1875 | Atom atom; |
3834c318 RS |
1876 | Display *dpy; |
1877 | ||
b8c70430 | 1878 | /* It should be safe to call this before we have an X frame. */ |
c6423dc1 | 1879 | if (! FRAME_X_P (selected_frame)) |
b8c70430 RS |
1880 | return Qnil; |
1881 | ||
3834c318 | 1882 | dpy = FRAME_X_DISPLAY (selected_frame); |
ede4db72 RS |
1883 | CHECK_SYMBOL (selection, 0); |
1884 | if (!NILP (Fx_selection_owner_p (selection))) | |
1885 | return Qt; | |
356ba514 RS |
1886 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
1887 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
5c3a351a RS |
1888 | atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
1889 | dpy, selection); | |
356ba514 RS |
1890 | if (atom == 0) |
1891 | return Qnil; | |
ede4db72 | 1892 | BLOCK_INPUT; |
356ba514 | 1893 | owner = XGetSelectionOwner (dpy, atom); |
ede4db72 RS |
1894 | UNBLOCK_INPUT; |
1895 | return (owner ? Qt : Qnil); | |
1896 | } | |
1897 | ||
1898 | \f | |
1899 | #ifdef CUT_BUFFER_SUPPORT | |
1900 | ||
ede4db72 RS |
1901 | /* Ensure that all 8 cut buffers exist. ICCCM says we gotta... */ |
1902 | static void | |
1903 | initialize_cut_buffers (display, window) | |
1904 | Display *display; | |
1905 | Window window; | |
1906 | { | |
1907 | unsigned char *data = (unsigned char *) ""; | |
1908 | BLOCK_INPUT; | |
1909 | #define FROB(atom) XChangeProperty (display, window, atom, XA_STRING, 8, \ | |
1910 | PropModeAppend, data, 0) | |
1911 | FROB (XA_CUT_BUFFER0); | |
1912 | FROB (XA_CUT_BUFFER1); | |
1913 | FROB (XA_CUT_BUFFER2); | |
1914 | FROB (XA_CUT_BUFFER3); | |
1915 | FROB (XA_CUT_BUFFER4); | |
1916 | FROB (XA_CUT_BUFFER5); | |
1917 | FROB (XA_CUT_BUFFER6); | |
1918 | FROB (XA_CUT_BUFFER7); | |
1919 | #undef FROB | |
1920 | UNBLOCK_INPUT; | |
ede4db72 RS |
1921 | } |
1922 | ||
1923 | ||
a87ed99c | 1924 | #define CHECK_CUT_BUFFER(symbol,n) \ |
ede4db72 RS |
1925 | { CHECK_SYMBOL ((symbol), (n)); \ |
1926 | if (!EQ((symbol), QCUT_BUFFER0) && !EQ((symbol), QCUT_BUFFER1) \ | |
1927 | && !EQ((symbol), QCUT_BUFFER2) && !EQ((symbol), QCUT_BUFFER3) \ | |
1928 | && !EQ((symbol), QCUT_BUFFER4) && !EQ((symbol), QCUT_BUFFER5) \ | |
1929 | && !EQ((symbol), QCUT_BUFFER6) && !EQ((symbol), QCUT_BUFFER7)) \ | |
1930 | Fsignal (Qerror, \ | |
a87ed99c | 1931 | Fcons (build_string ("doesn't name a cut buffer"), \ |
ede4db72 RS |
1932 | Fcons ((symbol), Qnil))); \ |
1933 | } | |
1934 | ||
a87ed99c RS |
1935 | DEFUN ("x-get-cut-buffer-internal", Fx_get_cut_buffer_internal, |
1936 | Sx_get_cut_buffer_internal, 1, 1, 0, | |
1937 | "Returns the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
1938 | (buffer) |
1939 | Lisp_Object buffer; | |
1940 | { | |
3834c318 | 1941 | Window window; |
ede4db72 RS |
1942 | Atom buffer_atom; |
1943 | unsigned char *data; | |
1944 | int bytes; | |
1945 | Atom type; | |
1946 | int format; | |
1947 | unsigned long size; | |
1948 | Lisp_Object ret; | |
3834c318 | 1949 | Display *display; |
5c3a351a | 1950 | struct x_display_info *dpyinfo; |
ede4db72 | 1951 | |
703e0710 | 1952 | check_x (); |
3834c318 | 1953 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1954 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
3834c318 | 1955 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ |
a87ed99c | 1956 | CHECK_CUT_BUFFER (buffer, 0); |
5c3a351a | 1957 | buffer_atom = symbol_to_x_atom (dpyinfo, display, buffer); |
ede4db72 RS |
1958 | |
1959 | x_get_window_property (display, window, buffer_atom, &data, &bytes, | |
1960 | &type, &format, &size, 0); | |
1961 | if (!data) return Qnil; | |
1962 | ||
1963 | if (format != 8 || type != XA_STRING) | |
1964 | Fsignal (Qerror, | |
1965 | Fcons (build_string ("cut buffer doesn't contain 8-bit data"), | |
5c3a351a | 1966 | Fcons (x_atom_to_symbol (dpyinfo, display, type), |
ede4db72 RS |
1967 | Fcons (make_number (format), Qnil)))); |
1968 | ||
1969 | ret = (bytes ? make_string ((char *) data, bytes) : Qnil); | |
1970 | xfree (data); | |
1971 | return ret; | |
1972 | } | |
1973 | ||
1974 | ||
a87ed99c RS |
1975 | DEFUN ("x-store-cut-buffer-internal", Fx_store_cut_buffer_internal, |
1976 | Sx_store_cut_buffer_internal, 2, 2, 0, | |
1977 | "Sets the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
1978 | (buffer, string) |
1979 | Lisp_Object buffer, string; | |
1980 | { | |
3834c318 | 1981 | Window window; |
ede4db72 RS |
1982 | Atom buffer_atom; |
1983 | unsigned char *data; | |
1984 | int bytes; | |
1985 | int bytes_remaining; | |
3834c318 RS |
1986 | int max_bytes; |
1987 | Display *display; | |
ede4db72 | 1988 | |
703e0710 | 1989 | check_x (); |
3834c318 RS |
1990 | display = FRAME_X_DISPLAY (selected_frame); |
1991 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
1992 | ||
1993 | max_bytes = SELECTION_QUANTUM (display); | |
1994 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
1995 | max_bytes = MAX_SELECTION_QUANTUM; | |
1996 | ||
a87ed99c | 1997 | CHECK_CUT_BUFFER (buffer, 0); |
ede4db72 | 1998 | CHECK_STRING (string, 0); |
5c3a351a RS |
1999 | buffer_atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
2000 | display, buffer); | |
ede4db72 RS |
2001 | data = (unsigned char *) XSTRING (string)->data; |
2002 | bytes = XSTRING (string)->size; | |
2003 | bytes_remaining = bytes; | |
2004 | ||
04649dbc KH |
2005 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
2006 | { | |
2007 | initialize_cut_buffers (display, window); | |
2008 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; | |
2009 | } | |
ede4db72 RS |
2010 | |
2011 | BLOCK_INPUT; | |
10608c8c RS |
2012 | |
2013 | /* Don't mess up with an empty value. */ | |
2014 | if (!bytes_remaining) | |
2015 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2016 | PropModeReplace, data, 0); | |
2017 | ||
ede4db72 RS |
2018 | while (bytes_remaining) |
2019 | { | |
2020 | int chunk = (bytes_remaining < max_bytes | |
2021 | ? bytes_remaining : max_bytes); | |
2022 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2023 | (bytes_remaining == bytes | |
2024 | ? PropModeReplace | |
2025 | : PropModeAppend), | |
2026 | data, chunk); | |
2027 | data += chunk; | |
2028 | bytes_remaining -= chunk; | |
2029 | } | |
2030 | UNBLOCK_INPUT; | |
2031 | return string; | |
2032 | } | |
2033 | ||
2034 | ||
a87ed99c RS |
2035 | DEFUN ("x-rotate-cut-buffers-internal", Fx_rotate_cut_buffers_internal, |
2036 | Sx_rotate_cut_buffers_internal, 1, 1, 0, | |
2037 | "Rotate the values of the cut buffers by the given number of steps;\n\ | |
ede4db72 RS |
2038 | positive means move values forward, negative means backward.") |
2039 | (n) | |
2040 | Lisp_Object n; | |
2041 | { | |
3834c318 RS |
2042 | Window window; |
2043 | Atom props[8]; | |
2044 | Display *display; | |
ede4db72 | 2045 | |
703e0710 | 2046 | check_x (); |
3834c318 RS |
2047 | display = FRAME_X_DISPLAY (selected_frame); |
2048 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
7da64e5c | 2049 | CHECK_NUMBER (n, 0); |
3834c318 RS |
2050 | if (XINT (n) == 0) |
2051 | return n; | |
04649dbc KH |
2052 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
2053 | { | |
2054 | initialize_cut_buffers (display, window); | |
2055 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; | |
2056 | } | |
3834c318 | 2057 | |
ede4db72 RS |
2058 | props[0] = XA_CUT_BUFFER0; |
2059 | props[1] = XA_CUT_BUFFER1; | |
2060 | props[2] = XA_CUT_BUFFER2; | |
2061 | props[3] = XA_CUT_BUFFER3; | |
2062 | props[4] = XA_CUT_BUFFER4; | |
2063 | props[5] = XA_CUT_BUFFER5; | |
2064 | props[6] = XA_CUT_BUFFER6; | |
2065 | props[7] = XA_CUT_BUFFER7; | |
2066 | BLOCK_INPUT; | |
2067 | XRotateWindowProperties (display, window, props, 8, XINT (n)); | |
2068 | UNBLOCK_INPUT; | |
2069 | return n; | |
2070 | } | |
2071 | ||
2072 | #endif | |
2073 | \f | |
ede4db72 RS |
2074 | void |
2075 | syms_of_xselect () | |
2076 | { | |
ede4db72 RS |
2077 | defsubr (&Sx_get_selection_internal); |
2078 | defsubr (&Sx_own_selection_internal); | |
2079 | defsubr (&Sx_disown_selection_internal); | |
2080 | defsubr (&Sx_selection_owner_p); | |
2081 | defsubr (&Sx_selection_exists_p); | |
2082 | ||
2083 | #ifdef CUT_BUFFER_SUPPORT | |
a87ed99c RS |
2084 | defsubr (&Sx_get_cut_buffer_internal); |
2085 | defsubr (&Sx_store_cut_buffer_internal); | |
2086 | defsubr (&Sx_rotate_cut_buffers_internal); | |
ede4db72 RS |
2087 | #endif |
2088 | ||
2089 | reading_selection_reply = Fcons (Qnil, Qnil); | |
2090 | staticpro (&reading_selection_reply); | |
2091 | reading_selection_window = 0; | |
2092 | reading_which_selection = 0; | |
2093 | ||
2094 | property_change_wait_list = 0; | |
2f65feb6 | 2095 | prop_location_identifier = 0; |
ede4db72 RS |
2096 | property_change_reply = Fcons (Qnil, Qnil); |
2097 | staticpro (&property_change_reply); | |
2098 | ||
2099 | Vselection_alist = Qnil; | |
2100 | staticpro (&Vselection_alist); | |
2101 | ||
2102 | DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist, | |
2103 | "An alist associating X Windows selection-types with functions.\n\ | |
2104 | These functions are called to convert the selection, with three args:\n\ | |
2105 | the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2106 | a desired type to which the selection should be converted;\n\ | |
2107 | and the local selection value (whatever was given to `x-own-selection').\n\ | |
2108 | \n\ | |
2109 | The function should return the value to send to the X server\n\ | |
2110 | \(typically a string). A return value of nil\n\ | |
2111 | means that the conversion could not be done.\n\ | |
2112 | A return value which is the symbol `NULL'\n\ | |
2113 | means that a side-effect was executed,\n\ | |
2114 | and there is no meaningful selection value."); | |
2115 | Vselection_converter_alist = Qnil; | |
2116 | ||
2117 | DEFVAR_LISP ("x-lost-selection-hooks", &Vx_lost_selection_hooks, | |
2118 | "A list of functions to be called when Emacs loses an X selection.\n\ | |
2119 | \(This happens when some other X client makes its own selection\n\ | |
2120 | or when a Lisp program explicitly clears the selection.)\n\ | |
2121 | The functions are called with one argument, the selection type\n\ | |
2122 | \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.)"); | |
2123 | Vx_lost_selection_hooks = Qnil; | |
2124 | ||
2125 | DEFVAR_LISP ("x-sent-selection-hooks", &Vx_sent_selection_hooks, | |
2126 | "A list of functions to be called when Emacs answers a selection request.\n\ | |
2127 | The functions are called with four arguments:\n\ | |
2128 | - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2129 | - the selection-type which Emacs was asked to convert the\n\ | |
2130 | selection into before sending (for example, `STRING' or `LENGTH');\n\ | |
2131 | - a flag indicating success or failure for responding to the request.\n\ | |
2132 | We might have failed (and declined the request) for any number of reasons,\n\ | |
2133 | including being asked for a selection that we no longer own, or being asked\n\ | |
2134 | to convert into a type that we don't know about or that is inappropriate.\n\ | |
2135 | This hook doesn't let you change the behavior of Emacs's selection replies,\n\ | |
2136 | it merely informs you that they have happened."); | |
2137 | Vx_sent_selection_hooks = Qnil; | |
2138 | ||
2139 | DEFVAR_INT ("x-selection-timeout", &x_selection_timeout, | |
80da0190 RS |
2140 | "Number of milliseconds to wait for a selection reply.\n\ |
2141 | If the selection owner doens't reply in this time, we give up.\n\ | |
ede4db72 | 2142 | A value of 0 means wait as long as necessary. This is initialized from the\n\ |
80da0190 | 2143 | \"*selectionTimeout\" resource."); |
ede4db72 RS |
2144 | x_selection_timeout = 0; |
2145 | ||
2146 | QPRIMARY = intern ("PRIMARY"); staticpro (&QPRIMARY); | |
2147 | QSECONDARY = intern ("SECONDARY"); staticpro (&QSECONDARY); | |
2148 | QSTRING = intern ("STRING"); staticpro (&QSTRING); | |
2149 | QINTEGER = intern ("INTEGER"); staticpro (&QINTEGER); | |
2150 | QCLIPBOARD = intern ("CLIPBOARD"); staticpro (&QCLIPBOARD); | |
2151 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2152 | QTEXT = intern ("TEXT"); staticpro (&QTEXT); | |
2153 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2154 | QDELETE = intern ("DELETE"); staticpro (&QDELETE); | |
2155 | QMULTIPLE = intern ("MULTIPLE"); staticpro (&QMULTIPLE); | |
2156 | QINCR = intern ("INCR"); staticpro (&QINCR); | |
2157 | QEMACS_TMP = intern ("_EMACS_TMP_"); staticpro (&QEMACS_TMP); | |
2158 | QTARGETS = intern ("TARGETS"); staticpro (&QTARGETS); | |
2159 | QATOM = intern ("ATOM"); staticpro (&QATOM); | |
2160 | QATOM_PAIR = intern ("ATOM_PAIR"); staticpro (&QATOM_PAIR); | |
2161 | QNULL = intern ("NULL"); staticpro (&QNULL); | |
2162 | ||
2163 | #ifdef CUT_BUFFER_SUPPORT | |
2164 | QCUT_BUFFER0 = intern ("CUT_BUFFER0"); staticpro (&QCUT_BUFFER0); | |
2165 | QCUT_BUFFER1 = intern ("CUT_BUFFER1"); staticpro (&QCUT_BUFFER1); | |
2166 | QCUT_BUFFER2 = intern ("CUT_BUFFER2"); staticpro (&QCUT_BUFFER2); | |
2167 | QCUT_BUFFER3 = intern ("CUT_BUFFER3"); staticpro (&QCUT_BUFFER3); | |
2168 | QCUT_BUFFER4 = intern ("CUT_BUFFER4"); staticpro (&QCUT_BUFFER4); | |
2169 | QCUT_BUFFER5 = intern ("CUT_BUFFER5"); staticpro (&QCUT_BUFFER5); | |
2170 | QCUT_BUFFER6 = intern ("CUT_BUFFER6"); staticpro (&QCUT_BUFFER6); | |
2171 | QCUT_BUFFER7 = intern ("CUT_BUFFER7"); staticpro (&QCUT_BUFFER7); | |
2172 | #endif | |
2173 | ||
2174 | } |