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2408b3a1 | 1 | /* X Selection processing for Emacs. |
4a2f9c6a | 2 | Copyright (C) 1993, 1994, 1995, 1996, 1997 Free Software Foundation. |
ede4db72 RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
ede4db72 | 20 | |
c6c5df7f | 21 | |
ede4db72 RS |
22 | /* Rewritten by jwz */ |
23 | ||
18160b98 | 24 | #include <config.h> |
ede4db72 RS |
25 | #include "lisp.h" |
26 | #include "xterm.h" /* for all of the X includes */ | |
7da64e5c RS |
27 | #include "dispextern.h" /* frame.h seems to want this */ |
28 | #include "frame.h" /* Need this to get the X window of selected_frame */ | |
9ac0d9e0 | 29 | #include "blockinput.h" |
5faa9b45 | 30 | #include "buffer.h" |
e6c7c988 KH |
31 | #include "charset.h" |
32 | #include "coding.h" | |
dfcf069d | 33 | #include "process.h" |
7da64e5c | 34 | |
ede4db72 RS |
35 | #define CUT_BUFFER_SUPPORT |
36 | ||
ede4db72 RS |
37 | Lisp_Object QPRIMARY, QSECONDARY, QSTRING, QINTEGER, QCLIPBOARD, QTIMESTAMP, |
38 | QTEXT, QDELETE, QMULTIPLE, QINCR, QEMACS_TMP, QTARGETS, QATOM, QNULL, | |
39 | QATOM_PAIR; | |
40 | ||
e6c7c988 KH |
41 | Lisp_Object QCOMPOUND_TEXT; /* This is a type of selection. */ |
42 | ||
ede4db72 RS |
43 | #ifdef CUT_BUFFER_SUPPORT |
44 | Lisp_Object QCUT_BUFFER0, QCUT_BUFFER1, QCUT_BUFFER2, QCUT_BUFFER3, | |
45 | QCUT_BUFFER4, QCUT_BUFFER5, QCUT_BUFFER6, QCUT_BUFFER7; | |
46 | #endif | |
47 | ||
8f4f023f RS |
48 | static Lisp_Object Vx_lost_selection_hooks; |
49 | static Lisp_Object Vx_sent_selection_hooks; | |
2584c9ec KH |
50 | /* Coding system for communicating with other X clients via cutbuffer, |
51 | selection, and clipboard. */ | |
93e4ce1b | 52 | static Lisp_Object Vselection_coding_system; |
ede4db72 RS |
53 | |
54 | /* If this is a smaller number than the max-request-size of the display, | |
55 | emacs will use INCR selection transfer when the selection is larger | |
56 | than this. The max-request-size is usually around 64k, so if you want | |
57 | emacs to use incremental selection transfers when the selection is | |
58 | smaller than that, set this. I added this mostly for debugging the | |
8f4f023f | 59 | incremental transfer stuff, but it might improve server performance. */ |
ede4db72 RS |
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 | 68 | /* The timestamp of the last input event Emacs received from the X server. */ |
29674445 KH |
69 | /* Defined in keyboard.c. */ |
70 | extern unsigned long last_event_timestamp; | |
ede4db72 RS |
71 | |
72 | /* This is an association list whose elements are of the form | |
118bd841 RS |
73 | ( SELECTION-NAME SELECTION-VALUE SELECTION-TIMESTAMP FRAME) |
74 | SELECTION-NAME is a lisp symbol, whose name is the name of an X Atom. | |
75 | SELECTION-VALUE is the value that emacs owns for that selection. | |
ede4db72 | 76 | It may be any kind of Lisp object. |
118bd841 | 77 | SELECTION-TIMESTAMP is the time at which emacs began owning this selection, |
ede4db72 | 78 | as a cons of two 16-bit numbers (making a 32 bit time.) |
118bd841 RS |
79 | FRAME is the frame for which we made the selection. |
80 | If there is an entry in this alist, then it can be assumed that Emacs owns | |
ede4db72 RS |
81 | that selection. |
82 | The only (eq) parts of this list that are visible from Lisp are the | |
8f4f023f RS |
83 | selection-values. */ |
84 | static Lisp_Object Vselection_alist; | |
ede4db72 RS |
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 | |
8f4f023f RS |
90 | selection handling. */ |
91 | static Lisp_Object Vselection_converter_alist; | |
ede4db72 RS |
92 | |
93 | /* If the selection owner takes too long to reply to a selection request, | |
8f4f023f RS |
94 | we give up on it. This is in milliseconds (0 = no timeout.) */ |
95 | static int x_selection_timeout; | |
ede4db72 RS |
96 | \f |
97 | /* Utility functions */ | |
98 | ||
99 | static void lisp_data_to_selection_data (); | |
100 | static Lisp_Object selection_data_to_lisp_data (); | |
101 | static Lisp_Object x_get_window_property_as_lisp_data (); | |
102 | ||
ede4db72 RS |
103 | /* This converts a Lisp symbol to a server Atom, avoiding a server |
104 | roundtrip whenever possible. */ | |
105 | ||
106 | static Atom | |
5c3a351a RS |
107 | symbol_to_x_atom (dpyinfo, display, sym) |
108 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
109 | Display *display; |
110 | Lisp_Object sym; | |
111 | { | |
112 | Atom val; | |
113 | if (NILP (sym)) return 0; | |
114 | if (EQ (sym, QPRIMARY)) return XA_PRIMARY; | |
115 | if (EQ (sym, QSECONDARY)) return XA_SECONDARY; | |
116 | if (EQ (sym, QSTRING)) return XA_STRING; | |
117 | if (EQ (sym, QINTEGER)) return XA_INTEGER; | |
118 | if (EQ (sym, QATOM)) return XA_ATOM; | |
5c3a351a RS |
119 | if (EQ (sym, QCLIPBOARD)) return dpyinfo->Xatom_CLIPBOARD; |
120 | if (EQ (sym, QTIMESTAMP)) return dpyinfo->Xatom_TIMESTAMP; | |
121 | if (EQ (sym, QTEXT)) return dpyinfo->Xatom_TEXT; | |
e6c7c988 | 122 | if (EQ (sym, QCOMPOUND_TEXT)) return dpyinfo->Xatom_COMPOUND_TEXT; |
5c3a351a RS |
123 | if (EQ (sym, QDELETE)) return dpyinfo->Xatom_DELETE; |
124 | if (EQ (sym, QMULTIPLE)) return dpyinfo->Xatom_MULTIPLE; | |
125 | if (EQ (sym, QINCR)) return dpyinfo->Xatom_INCR; | |
126 | if (EQ (sym, QEMACS_TMP)) return dpyinfo->Xatom_EMACS_TMP; | |
127 | if (EQ (sym, QTARGETS)) return dpyinfo->Xatom_TARGETS; | |
128 | if (EQ (sym, QNULL)) return dpyinfo->Xatom_NULL; | |
ede4db72 RS |
129 | #ifdef CUT_BUFFER_SUPPORT |
130 | if (EQ (sym, QCUT_BUFFER0)) return XA_CUT_BUFFER0; | |
131 | if (EQ (sym, QCUT_BUFFER1)) return XA_CUT_BUFFER1; | |
132 | if (EQ (sym, QCUT_BUFFER2)) return XA_CUT_BUFFER2; | |
133 | if (EQ (sym, QCUT_BUFFER3)) return XA_CUT_BUFFER3; | |
134 | if (EQ (sym, QCUT_BUFFER4)) return XA_CUT_BUFFER4; | |
135 | if (EQ (sym, QCUT_BUFFER5)) return XA_CUT_BUFFER5; | |
136 | if (EQ (sym, QCUT_BUFFER6)) return XA_CUT_BUFFER6; | |
137 | if (EQ (sym, QCUT_BUFFER7)) return XA_CUT_BUFFER7; | |
138 | #endif | |
139 | if (!SYMBOLP (sym)) abort (); | |
140 | ||
141 | #if 0 | |
142 | fprintf (stderr, " XInternAtom %s\n", (char *) XSYMBOL (sym)->name->data); | |
143 | #endif | |
144 | BLOCK_INPUT; | |
145 | val = XInternAtom (display, (char *) XSYMBOL (sym)->name->data, False); | |
146 | UNBLOCK_INPUT; | |
147 | return val; | |
148 | } | |
149 | ||
150 | ||
151 | /* This converts a server Atom to a Lisp symbol, avoiding server roundtrips | |
152 | and calls to intern whenever possible. */ | |
153 | ||
154 | static Lisp_Object | |
5c3a351a RS |
155 | x_atom_to_symbol (dpyinfo, display, atom) |
156 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
157 | Display *display; |
158 | Atom atom; | |
159 | { | |
160 | char *str; | |
161 | Lisp_Object val; | |
162 | if (! atom) return Qnil; | |
7da64e5c RS |
163 | switch (atom) |
164 | { | |
165 | case XA_PRIMARY: | |
166 | return QPRIMARY; | |
167 | case XA_SECONDARY: | |
168 | return QSECONDARY; | |
169 | case XA_STRING: | |
170 | return QSTRING; | |
171 | case XA_INTEGER: | |
172 | return QINTEGER; | |
173 | case XA_ATOM: | |
174 | return QATOM; | |
ede4db72 | 175 | #ifdef CUT_BUFFER_SUPPORT |
7da64e5c RS |
176 | case XA_CUT_BUFFER0: |
177 | return QCUT_BUFFER0; | |
178 | case XA_CUT_BUFFER1: | |
179 | return QCUT_BUFFER1; | |
180 | case XA_CUT_BUFFER2: | |
181 | return QCUT_BUFFER2; | |
182 | case XA_CUT_BUFFER3: | |
183 | return QCUT_BUFFER3; | |
184 | case XA_CUT_BUFFER4: | |
185 | return QCUT_BUFFER4; | |
186 | case XA_CUT_BUFFER5: | |
187 | return QCUT_BUFFER5; | |
188 | case XA_CUT_BUFFER6: | |
189 | return QCUT_BUFFER6; | |
190 | case XA_CUT_BUFFER7: | |
191 | return QCUT_BUFFER7; | |
ede4db72 | 192 | #endif |
7da64e5c RS |
193 | } |
194 | ||
5c3a351a | 195 | if (atom == dpyinfo->Xatom_CLIPBOARD) |
7da64e5c | 196 | return QCLIPBOARD; |
5c3a351a | 197 | if (atom == dpyinfo->Xatom_TIMESTAMP) |
7da64e5c | 198 | return QTIMESTAMP; |
5c3a351a | 199 | if (atom == dpyinfo->Xatom_TEXT) |
7da64e5c | 200 | return QTEXT; |
e6c7c988 KH |
201 | if (atom == dpyinfo->Xatom_COMPOUND_TEXT) |
202 | return QCOMPOUND_TEXT; | |
5c3a351a | 203 | if (atom == dpyinfo->Xatom_DELETE) |
7da64e5c | 204 | return QDELETE; |
5c3a351a | 205 | if (atom == dpyinfo->Xatom_MULTIPLE) |
7da64e5c | 206 | return QMULTIPLE; |
5c3a351a | 207 | if (atom == dpyinfo->Xatom_INCR) |
7da64e5c | 208 | return QINCR; |
5c3a351a | 209 | if (atom == dpyinfo->Xatom_EMACS_TMP) |
7da64e5c | 210 | return QEMACS_TMP; |
5c3a351a | 211 | if (atom == dpyinfo->Xatom_TARGETS) |
7da64e5c | 212 | return QTARGETS; |
5c3a351a | 213 | if (atom == dpyinfo->Xatom_NULL) |
7da64e5c | 214 | return QNULL; |
ede4db72 RS |
215 | |
216 | BLOCK_INPUT; | |
217 | str = XGetAtomName (display, atom); | |
218 | UNBLOCK_INPUT; | |
219 | #if 0 | |
220 | fprintf (stderr, " XGetAtomName --> %s\n", str); | |
221 | #endif | |
222 | if (! str) return Qnil; | |
223 | val = intern (str); | |
224 | BLOCK_INPUT; | |
0158abbc | 225 | /* This was allocated by Xlib, so use XFree. */ |
ede4db72 RS |
226 | XFree (str); |
227 | UNBLOCK_INPUT; | |
228 | return val; | |
229 | } | |
8a89415e | 230 | \f |
ede4db72 RS |
231 | /* Do protocol to assert ourself as a selection owner. |
232 | Update the Vselection_alist so that we can reply to later requests for | |
233 | our selection. */ | |
234 | ||
235 | static void | |
236 | x_own_selection (selection_name, selection_value) | |
237 | Lisp_Object selection_name, selection_value; | |
238 | { | |
ede4db72 | 239 | Window selecting_window = FRAME_X_WINDOW (selected_frame); |
3834c318 | 240 | Display *display = FRAME_X_DISPLAY (selected_frame); |
7da64e5c | 241 | Time time = last_event_timestamp; |
ede4db72 | 242 | Atom selection_atom; |
5c3a351a | 243 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
5a499696 | 244 | int count; |
ede4db72 RS |
245 | |
246 | CHECK_SYMBOL (selection_name, 0); | |
5c3a351a | 247 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection_name); |
ede4db72 RS |
248 | |
249 | BLOCK_INPUT; | |
5a499696 | 250 | count = x_catch_errors (display); |
ede4db72 | 251 | XSetSelectionOwner (display, selection_atom, selecting_window, time); |
a7b24d46 | 252 | x_check_errors (display, "Can't set selection: %s"); |
5a499696 | 253 | x_uncatch_errors (display, count); |
ede4db72 RS |
254 | UNBLOCK_INPUT; |
255 | ||
256 | /* Now update the local cache */ | |
257 | { | |
258 | Lisp_Object selection_time; | |
259 | Lisp_Object selection_data; | |
260 | Lisp_Object prev_value; | |
261 | ||
262 | selection_time = long_to_cons ((unsigned long) time); | |
263 | selection_data = Fcons (selection_name, | |
264 | Fcons (selection_value, | |
118bd841 RS |
265 | Fcons (selection_time, |
266 | Fcons (Fselected_frame (), Qnil)))); | |
ede4db72 RS |
267 | prev_value = assq_no_quit (selection_name, Vselection_alist); |
268 | ||
269 | Vselection_alist = Fcons (selection_data, Vselection_alist); | |
270 | ||
271 | /* If we already owned the selection, remove the old selection data. | |
272 | Perhaps we should destructively modify it instead. | |
273 | Don't use Fdelq as that may QUIT. */ | |
274 | if (!NILP (prev_value)) | |
275 | { | |
276 | Lisp_Object rest; /* we know it's not the CAR, so it's easy. */ | |
277 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
278 | if (EQ (prev_value, Fcar (XCONS (rest)->cdr))) | |
279 | { | |
280 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
281 | break; | |
282 | } | |
283 | } | |
284 | } | |
285 | } | |
286 | \f | |
287 | /* Given a selection-name and desired type, look up our local copy of | |
288 | the selection value and convert it to the type. | |
289 | The value is nil or a string. | |
290 | This function is used both for remote requests | |
7da64e5c | 291 | and for local x-get-selection-internal. |
ede4db72 RS |
292 | |
293 | This calls random Lisp code, and may signal or gc. */ | |
294 | ||
295 | static Lisp_Object | |
296 | x_get_local_selection (selection_symbol, target_type) | |
297 | Lisp_Object selection_symbol, target_type; | |
298 | { | |
299 | Lisp_Object local_value; | |
300 | Lisp_Object handler_fn, value, type, check; | |
301 | int count; | |
302 | ||
303 | local_value = assq_no_quit (selection_symbol, Vselection_alist); | |
304 | ||
305 | if (NILP (local_value)) return Qnil; | |
306 | ||
307 | /* TIMESTAMP and MULTIPLE are special cases 'cause that's easiest. */ | |
308 | if (EQ (target_type, QTIMESTAMP)) | |
309 | { | |
310 | handler_fn = Qnil; | |
311 | value = XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car; | |
312 | } | |
313 | #if 0 | |
314 | else if (EQ (target_type, QDELETE)) | |
315 | { | |
316 | handler_fn = Qnil; | |
317 | Fx_disown_selection_internal | |
318 | (selection_symbol, | |
319 | XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car); | |
320 | value = QNULL; | |
321 | } | |
322 | #endif | |
323 | ||
324 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
325 | else if (CONSP (target_type) | |
326 | && XCONS (target_type)->car == QMULTIPLE) | |
327 | { | |
9d2d1dd8 KH |
328 | Lisp_Object pairs; |
329 | int size; | |
ede4db72 | 330 | int i; |
9d2d1dd8 KH |
331 | pairs = XCONS (target_type)->cdr; |
332 | size = XVECTOR (pairs)->size; | |
ede4db72 RS |
333 | /* If the target is MULTIPLE, then target_type looks like |
334 | (MULTIPLE . [[SELECTION1 TARGET1] [SELECTION2 TARGET2] ... ]) | |
335 | We modify the second element of each pair in the vector and | |
336 | return it as [[SELECTION1 <value1>] [SELECTION2 <value2>] ... ] | |
337 | */ | |
338 | for (i = 0; i < size; i++) | |
339 | { | |
9d2d1dd8 KH |
340 | Lisp_Object pair; |
341 | pair = XVECTOR (pairs)->contents [i]; | |
ede4db72 RS |
342 | XVECTOR (pair)->contents [1] |
343 | = x_get_local_selection (XVECTOR (pair)->contents [0], | |
344 | XVECTOR (pair)->contents [1]); | |
345 | } | |
346 | return pairs; | |
347 | } | |
348 | #endif | |
349 | else | |
350 | { | |
351 | /* Don't allow a quit within the converter. | |
352 | When the user types C-g, he would be surprised | |
353 | if by luck it came during a converter. */ | |
354 | count = specpdl_ptr - specpdl; | |
355 | specbind (Qinhibit_quit, Qt); | |
356 | ||
357 | CHECK_SYMBOL (target_type, 0); | |
358 | handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist)); | |
1eb4d468 RS |
359 | if (!NILP (handler_fn)) |
360 | value = call3 (handler_fn, | |
361 | selection_symbol, target_type, | |
362 | XCONS (XCONS (local_value)->cdr)->car); | |
363 | else | |
364 | value = Qnil; | |
ede4db72 RS |
365 | unbind_to (count, Qnil); |
366 | } | |
367 | ||
368 | /* Make sure this value is of a type that we could transmit | |
369 | to another X client. */ | |
a87ed99c | 370 | |
ede4db72 RS |
371 | check = value; |
372 | if (CONSP (value) | |
373 | && SYMBOLP (XCONS (value)->car)) | |
374 | type = XCONS (value)->car, | |
375 | check = XCONS (value)->cdr; | |
376 | ||
377 | if (STRINGP (check) | |
378 | || VECTORP (check) | |
379 | || SYMBOLP (check) | |
7da64e5c | 380 | || INTEGERP (check) |
ede4db72 RS |
381 | || NILP (value)) |
382 | return value; | |
a87ed99c | 383 | /* Check for a value that cons_to_long could handle. */ |
ede4db72 | 384 | else if (CONSP (check) |
7da64e5c RS |
385 | && INTEGERP (XCONS (check)->car) |
386 | && (INTEGERP (XCONS (check)->cdr) | |
ede4db72 RS |
387 | || |
388 | (CONSP (XCONS (check)->cdr) | |
7da64e5c | 389 | && INTEGERP (XCONS (XCONS (check)->cdr)->car) |
ede4db72 RS |
390 | && NILP (XCONS (XCONS (check)->cdr)->cdr)))) |
391 | return value; | |
392 | else | |
393 | return | |
394 | Fsignal (Qerror, | |
a87ed99c | 395 | Fcons (build_string ("invalid data returned by selection-conversion function"), |
ede4db72 RS |
396 | Fcons (handler_fn, Fcons (value, Qnil)))); |
397 | } | |
398 | \f | |
399 | /* Subroutines of x_reply_selection_request. */ | |
400 | ||
5d0ba25b | 401 | /* Send a SelectionNotify event to the requestor with property=None, |
ede4db72 RS |
402 | meaning we were unable to do what they wanted. */ |
403 | ||
404 | static void | |
405 | x_decline_selection_request (event) | |
406 | struct input_event *event; | |
407 | { | |
408 | XSelectionEvent reply; | |
409 | reply.type = SelectionNotify; | |
410 | reply.display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 411 | reply.requestor = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
412 | reply.selection = SELECTION_EVENT_SELECTION (event); |
413 | reply.time = SELECTION_EVENT_TIME (event); | |
414 | reply.target = SELECTION_EVENT_TARGET (event); | |
415 | reply.property = None; | |
416 | ||
417 | BLOCK_INPUT; | |
5d0ba25b | 418 | XSendEvent (reply.display, reply.requestor, False, 0L, |
7ffb2841 | 419 | (XEvent *) &reply); |
5c3a351a | 420 | XFlush (reply.display); |
ede4db72 RS |
421 | UNBLOCK_INPUT; |
422 | } | |
423 | ||
424 | /* This is the selection request currently being processed. | |
425 | It is set to zero when the request is fully processed. */ | |
426 | static struct input_event *x_selection_current_request; | |
427 | ||
428 | /* Used as an unwind-protect clause so that, if a selection-converter signals | |
2a1a4c9d | 429 | an error, we tell the requester that we were unable to do what they wanted |
ede4db72 RS |
430 | before we throw to top-level or go into the debugger or whatever. */ |
431 | ||
432 | static Lisp_Object | |
433 | x_selection_request_lisp_error (ignore) | |
434 | Lisp_Object ignore; | |
435 | { | |
436 | if (x_selection_current_request != 0) | |
437 | x_decline_selection_request (x_selection_current_request); | |
438 | return Qnil; | |
439 | } | |
440 | \f | |
d1f21a66 RS |
441 | |
442 | /* This stuff is so that INCR selections are reentrant (that is, so we can | |
443 | be servicing multiple INCR selection requests simultaneously.) I haven't | |
444 | actually tested that yet. */ | |
445 | ||
446 | /* Keep a list of the property changes that are awaited. */ | |
447 | ||
448 | struct prop_location | |
449 | { | |
450 | int identifier; | |
451 | Display *display; | |
452 | Window window; | |
453 | Atom property; | |
454 | int desired_state; | |
455 | int arrived; | |
456 | struct prop_location *next; | |
457 | }; | |
458 | ||
459 | static struct prop_location *expect_property_change (); | |
460 | static void wait_for_property_change (); | |
461 | static void unexpect_property_change (); | |
462 | static int waiting_for_other_props_on_window (); | |
463 | ||
464 | static int prop_location_identifier; | |
465 | ||
466 | static Lisp_Object property_change_reply; | |
467 | ||
468 | static struct prop_location *property_change_reply_object; | |
469 | ||
470 | static struct prop_location *property_change_wait_list; | |
55b2d45d RS |
471 | |
472 | static Lisp_Object | |
473 | queue_selection_requests_unwind (frame) | |
474 | Lisp_Object frame; | |
475 | { | |
476 | FRAME_PTR f = XFRAME (frame); | |
477 | ||
478 | if (! NILP (frame)) | |
479 | x_stop_queuing_selection_requests (FRAME_X_DISPLAY (f)); | |
ab552306 | 480 | return Qnil; |
55b2d45d RS |
481 | } |
482 | ||
483 | /* Return some frame whose display info is DPYINFO. | |
484 | Return nil if there is none. */ | |
485 | ||
486 | static Lisp_Object | |
487 | some_frame_on_display (dpyinfo) | |
488 | struct x_display_info *dpyinfo; | |
489 | { | |
490 | Lisp_Object list, frame; | |
491 | ||
492 | FOR_EACH_FRAME (list, frame) | |
493 | { | |
494 | if (FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
495 | return frame; | |
496 | } | |
497 | ||
498 | return Qnil; | |
499 | } | |
d1f21a66 | 500 | \f |
ede4db72 RS |
501 | /* Send the reply to a selection request event EVENT. |
502 | TYPE is the type of selection data requested. | |
503 | DATA and SIZE describe the data to send, already converted. | |
504 | FORMAT is the unit-size (in bits) of the data to be transmitted. */ | |
505 | ||
506 | static void | |
507 | x_reply_selection_request (event, format, data, size, type) | |
508 | struct input_event *event; | |
509 | int format, size; | |
510 | unsigned char *data; | |
511 | Atom type; | |
512 | { | |
513 | XSelectionEvent reply; | |
514 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 515 | Window window = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
516 | int bytes_remaining; |
517 | int format_bytes = format/8; | |
518 | int max_bytes = SELECTION_QUANTUM (display); | |
5c3a351a | 519 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
5a499696 | 520 | int count; |
ede4db72 RS |
521 | |
522 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
523 | max_bytes = MAX_SELECTION_QUANTUM; | |
524 | ||
525 | reply.type = SelectionNotify; | |
526 | reply.display = display; | |
5d0ba25b | 527 | reply.requestor = window; |
ede4db72 RS |
528 | reply.selection = SELECTION_EVENT_SELECTION (event); |
529 | reply.time = SELECTION_EVENT_TIME (event); | |
530 | reply.target = SELECTION_EVENT_TARGET (event); | |
531 | reply.property = SELECTION_EVENT_PROPERTY (event); | |
532 | if (reply.property == None) | |
533 | reply.property = reply.target; | |
534 | ||
535 | /* #### XChangeProperty can generate BadAlloc, and we must handle it! */ | |
afe1529d | 536 | BLOCK_INPUT; |
ad7f9d12 | 537 | count = x_catch_errors (display); |
ede4db72 | 538 | |
ede4db72 RS |
539 | /* Store the data on the requested property. |
540 | If the selection is large, only store the first N bytes of it. | |
541 | */ | |
542 | bytes_remaining = size * format_bytes; | |
543 | if (bytes_remaining <= max_bytes) | |
544 | { | |
545 | /* Send all the data at once, with minimal handshaking. */ | |
546 | #if 0 | |
547 | fprintf (stderr,"\nStoring all %d\n", bytes_remaining); | |
548 | #endif | |
549 | XChangeProperty (display, window, reply.property, type, format, | |
550 | PropModeReplace, data, size); | |
551 | /* At this point, the selection was successfully stored; ack it. */ | |
2f65feb6 | 552 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
ede4db72 RS |
553 | } |
554 | else | |
555 | { | |
556 | /* Send an INCR selection. */ | |
d1f21a66 | 557 | struct prop_location *wait_object; |
afe1529d | 558 | int had_errors; |
55b2d45d | 559 | Lisp_Object frame; |
ede4db72 | 560 | |
55b2d45d RS |
561 | frame = some_frame_on_display (dpyinfo); |
562 | ||
563 | /* If the display no longer has frames, we can't expect | |
564 | to get many more selection requests from it, so don't | |
565 | bother trying to queue them. */ | |
566 | if (!NILP (frame)) | |
567 | { | |
568 | x_start_queuing_selection_requests (display); | |
569 | ||
570 | record_unwind_protect (queue_selection_requests_unwind, | |
571 | frame); | |
572 | } | |
2f65feb6 | 573 | |
19126e11 | 574 | if (x_window_to_frame (dpyinfo, window)) /* #### debug */ |
606140dd | 575 | error ("Attempt to transfer an INCR to ourself!"); |
ede4db72 RS |
576 | #if 0 |
577 | fprintf (stderr, "\nINCR %d\n", bytes_remaining); | |
578 | #endif | |
d1f21a66 RS |
579 | wait_object = expect_property_change (display, window, reply.property, |
580 | PropertyDelete); | |
ede4db72 | 581 | |
5c3a351a | 582 | XChangeProperty (display, window, reply.property, dpyinfo->Xatom_INCR, |
55b2d45d RS |
583 | 32, PropModeReplace, |
584 | (unsigned char *) &bytes_remaining, 1); | |
ede4db72 RS |
585 | XSelectInput (display, window, PropertyChangeMask); |
586 | /* Tell 'em the INCR data is there... */ | |
55b2d45d | 587 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
5c3a351a | 588 | XFlush (display); |
afe1529d RS |
589 | |
590 | had_errors = x_had_errors_p (display); | |
2f65feb6 | 591 | UNBLOCK_INPUT; |
ede4db72 | 592 | |
2a1a4c9d | 593 | /* First, wait for the requester to ack by deleting the property. |
ede4db72 | 594 | This can run random lisp code (process handlers) or signal. */ |
afe1529d RS |
595 | if (! had_errors) |
596 | wait_for_property_change (wait_object); | |
ede4db72 RS |
597 | |
598 | while (bytes_remaining) | |
599 | { | |
600 | int i = ((bytes_remaining < max_bytes) | |
601 | ? bytes_remaining | |
602 | : max_bytes); | |
2f65feb6 RS |
603 | |
604 | BLOCK_INPUT; | |
605 | ||
d1f21a66 RS |
606 | wait_object |
607 | = expect_property_change (display, window, reply.property, | |
608 | PropertyDelete); | |
ede4db72 RS |
609 | #if 0 |
610 | fprintf (stderr," INCR adding %d\n", i); | |
611 | #endif | |
612 | /* Append the next chunk of data to the property. */ | |
613 | XChangeProperty (display, window, reply.property, type, format, | |
614 | PropModeAppend, data, i / format_bytes); | |
615 | bytes_remaining -= i; | |
616 | data += i; | |
5c3a351a | 617 | XFlush (display); |
afe1529d | 618 | had_errors = x_had_errors_p (display); |
2f65feb6 | 619 | UNBLOCK_INPUT; |
ede4db72 | 620 | |
afe1529d RS |
621 | if (had_errors) |
622 | break; | |
623 | ||
2a1a4c9d | 624 | /* Now wait for the requester to ack this chunk by deleting the |
ede4db72 RS |
625 | property. This can run random lisp code or signal. |
626 | */ | |
d1f21a66 | 627 | wait_for_property_change (wait_object); |
ede4db72 | 628 | } |
2a1a4c9d | 629 | /* Now write a zero-length chunk to the property to tell the requester |
ede4db72 RS |
630 | that we're done. */ |
631 | #if 0 | |
632 | fprintf (stderr," INCR done\n"); | |
633 | #endif | |
2f65feb6 | 634 | BLOCK_INPUT; |
ede4db72 RS |
635 | if (! waiting_for_other_props_on_window (display, window)) |
636 | XSelectInput (display, window, 0L); | |
637 | ||
638 | XChangeProperty (display, window, reply.property, type, format, | |
639 | PropModeReplace, data, 0); | |
640 | } | |
afe1529d RS |
641 | |
642 | XFlush (display); | |
5a499696 | 643 | x_uncatch_errors (display, count); |
afe1529d | 644 | UNBLOCK_INPUT; |
ede4db72 RS |
645 | } |
646 | \f | |
647 | /* Handle a SelectionRequest event EVENT. | |
648 | This is called from keyboard.c when such an event is found in the queue. */ | |
649 | ||
650 | void | |
651 | x_handle_selection_request (event) | |
652 | struct input_event *event; | |
653 | { | |
654 | struct gcpro gcpro1, gcpro2, gcpro3; | |
9d2d1dd8 | 655 | Lisp_Object local_selection_data; |
ede4db72 | 656 | Lisp_Object selection_symbol; |
9d2d1dd8 KH |
657 | Lisp_Object target_symbol; |
658 | Lisp_Object converted_selection; | |
ede4db72 | 659 | Time local_selection_time; |
9d2d1dd8 | 660 | Lisp_Object successful_p; |
ede4db72 | 661 | int count; |
5c3a351a RS |
662 | struct x_display_info *dpyinfo |
663 | = x_display_info_for_display (SELECTION_EVENT_DISPLAY (event)); | |
ede4db72 | 664 | |
9d2d1dd8 KH |
665 | local_selection_data = Qnil; |
666 | target_symbol = Qnil; | |
667 | converted_selection = Qnil; | |
668 | successful_p = Qnil; | |
669 | ||
ede4db72 RS |
670 | GCPRO3 (local_selection_data, converted_selection, target_symbol); |
671 | ||
5c3a351a RS |
672 | selection_symbol = x_atom_to_symbol (dpyinfo, |
673 | SELECTION_EVENT_DISPLAY (event), | |
ede4db72 RS |
674 | SELECTION_EVENT_SELECTION (event)); |
675 | ||
676 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
ede4db72 RS |
677 | |
678 | if (NILP (local_selection_data)) | |
679 | { | |
680 | /* Someone asked for the selection, but we don't have it any more. | |
681 | */ | |
682 | x_decline_selection_request (event); | |
683 | goto DONE; | |
684 | } | |
685 | ||
686 | local_selection_time = (Time) | |
687 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
688 | ||
689 | if (SELECTION_EVENT_TIME (event) != CurrentTime | |
7da64e5c | 690 | && local_selection_time > SELECTION_EVENT_TIME (event)) |
ede4db72 RS |
691 | { |
692 | /* Someone asked for the selection, and we have one, but not the one | |
693 | they're looking for. | |
694 | */ | |
695 | x_decline_selection_request (event); | |
696 | goto DONE; | |
697 | } | |
698 | ||
699 | count = specpdl_ptr - specpdl; | |
700 | x_selection_current_request = event; | |
701 | record_unwind_protect (x_selection_request_lisp_error, Qnil); | |
702 | ||
5c3a351a | 703 | target_symbol = x_atom_to_symbol (dpyinfo, SELECTION_EVENT_DISPLAY (event), |
ede4db72 RS |
704 | SELECTION_EVENT_TARGET (event)); |
705 | ||
706 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
707 | if (EQ (target_symbol, QMULTIPLE)) | |
708 | target_symbol = fetch_multiple_target (event); | |
709 | #endif | |
710 | ||
711 | /* Convert lisp objects back into binary data */ | |
712 | ||
713 | converted_selection | |
714 | = x_get_local_selection (selection_symbol, target_symbol); | |
715 | ||
716 | if (! NILP (converted_selection)) | |
717 | { | |
718 | unsigned char *data; | |
719 | unsigned int size; | |
720 | int format; | |
721 | Atom type; | |
aca39f42 RS |
722 | int nofree; |
723 | ||
2f65feb6 RS |
724 | lisp_data_to_selection_data (SELECTION_EVENT_DISPLAY (event), |
725 | converted_selection, | |
aca39f42 | 726 | &data, &type, &size, &format, &nofree); |
ede4db72 RS |
727 | |
728 | x_reply_selection_request (event, format, data, size, type); | |
729 | successful_p = Qt; | |
730 | ||
731 | /* Indicate we have successfully processed this event. */ | |
7da64e5c | 732 | x_selection_current_request = 0; |
ede4db72 | 733 | |
4feb31b2 | 734 | /* Use xfree, not XFree, because lisp_data_to_selection_data |
0158abbc | 735 | calls xmalloc itself. */ |
aca39f42 | 736 | if (!nofree) |
4feb31b2 | 737 | xfree (data); |
ede4db72 RS |
738 | } |
739 | unbind_to (count, Qnil); | |
740 | ||
741 | DONE: | |
742 | ||
743 | UNGCPRO; | |
744 | ||
745 | /* Let random lisp code notice that the selection has been asked for. */ | |
746 | { | |
9d2d1dd8 KH |
747 | Lisp_Object rest; |
748 | rest = Vx_sent_selection_hooks; | |
ede4db72 RS |
749 | if (!EQ (rest, Qunbound)) |
750 | for (; CONSP (rest); rest = Fcdr (rest)) | |
751 | call3 (Fcar (rest), selection_symbol, target_symbol, successful_p); | |
752 | } | |
753 | } | |
754 | \f | |
755 | /* Handle a SelectionClear event EVENT, which indicates that some other | |
756 | client cleared out our previously asserted selection. | |
757 | This is called from keyboard.c when such an event is found in the queue. */ | |
758 | ||
759 | void | |
760 | x_handle_selection_clear (event) | |
761 | struct input_event *event; | |
762 | { | |
763 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
764 | Atom selection = SELECTION_EVENT_SELECTION (event); | |
765 | Time changed_owner_time = SELECTION_EVENT_TIME (event); | |
766 | ||
767 | Lisp_Object selection_symbol, local_selection_data; | |
768 | Time local_selection_time; | |
5c3a351a | 769 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 770 | |
5c3a351a | 771 | selection_symbol = x_atom_to_symbol (dpyinfo, display, selection); |
ede4db72 RS |
772 | |
773 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
774 | ||
775 | /* Well, we already believe that we don't own it, so that's just fine. */ | |
776 | if (NILP (local_selection_data)) return; | |
777 | ||
778 | local_selection_time = (Time) | |
779 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
780 | ||
781 | /* This SelectionClear is for a selection that we no longer own, so we can | |
782 | disregard it. (That is, we have reasserted the selection since this | |
783 | request was generated.) */ | |
784 | ||
785 | if (changed_owner_time != CurrentTime | |
786 | && local_selection_time > changed_owner_time) | |
787 | return; | |
788 | ||
789 | /* Otherwise, we're really honest and truly being told to drop it. | |
790 | Don't use Fdelq as that may QUIT;. */ | |
791 | ||
792 | if (EQ (local_selection_data, Fcar (Vselection_alist))) | |
793 | Vselection_alist = Fcdr (Vselection_alist); | |
794 | else | |
795 | { | |
796 | Lisp_Object rest; | |
797 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
798 | if (EQ (local_selection_data, Fcar (XCONS (rest)->cdr))) | |
799 | { | |
800 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
801 | break; | |
802 | } | |
803 | } | |
804 | ||
805 | /* Let random lisp code notice that the selection has been stolen. */ | |
806 | ||
807 | { | |
d1f21a66 RS |
808 | Lisp_Object rest; |
809 | rest = Vx_lost_selection_hooks; | |
ede4db72 | 810 | if (!EQ (rest, Qunbound)) |
d1f21a66 RS |
811 | { |
812 | for (; CONSP (rest); rest = Fcdr (rest)) | |
813 | call1 (Fcar (rest), selection_symbol); | |
7c6b2ea4 | 814 | prepare_menu_bars (); |
d1f21a66 RS |
815 | redisplay_preserve_echo_area (); |
816 | } | |
ede4db72 RS |
817 | } |
818 | } | |
819 | ||
118bd841 RS |
820 | /* Clear all selections that were made from frame F. |
821 | We do this when about to delete a frame. */ | |
822 | ||
823 | void | |
824 | x_clear_frame_selections (f) | |
825 | FRAME_PTR f; | |
826 | { | |
827 | Lisp_Object frame; | |
828 | Lisp_Object rest; | |
829 | ||
90851bbe | 830 | XSETFRAME (frame, f); |
118bd841 RS |
831 | |
832 | /* Otherwise, we're really honest and truly being told to drop it. | |
833 | Don't use Fdelq as that may QUIT;. */ | |
834 | ||
0d199f9c RS |
835 | /* Delete elements from the beginning of Vselection_alist. */ |
836 | while (!NILP (Vselection_alist) | |
837 | && EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (Vselection_alist))))))) | |
838 | { | |
839 | /* Let random Lisp code notice that the selection has been stolen. */ | |
840 | Lisp_Object hooks, selection_symbol; | |
841 | ||
842 | hooks = Vx_lost_selection_hooks; | |
843 | selection_symbol = Fcar (Fcar (Vselection_alist)); | |
844 | ||
845 | if (!EQ (hooks, Qunbound)) | |
846 | { | |
847 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
848 | call1 (Fcar (hooks), selection_symbol); | |
996b804d MB |
849 | #if 0 /* This can crash when deleting a frame |
850 | from x_connection_closed. Anyway, it seems unnecessary; | |
851 | something else should cause a redisplay. */ | |
0d199f9c | 852 | redisplay_preserve_echo_area (); |
996b804d | 853 | #endif |
0d199f9c RS |
854 | } |
855 | ||
856 | Vselection_alist = Fcdr (Vselection_alist); | |
857 | } | |
858 | ||
859 | /* Delete elements after the beginning of Vselection_alist. */ | |
118bd841 RS |
860 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) |
861 | if (EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (XCONS (rest)->cdr))))))) | |
862 | { | |
863 | /* Let random Lisp code notice that the selection has been stolen. */ | |
864 | Lisp_Object hooks, selection_symbol; | |
865 | ||
866 | hooks = Vx_lost_selection_hooks; | |
0d199f9c | 867 | selection_symbol = Fcar (Fcar (XCONS (rest)->cdr)); |
118bd841 RS |
868 | |
869 | if (!EQ (hooks, Qunbound)) | |
870 | { | |
871 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
872 | call1 (Fcar (hooks), selection_symbol); | |
996b804d | 873 | #if 0 /* See above */ |
118bd841 | 874 | redisplay_preserve_echo_area (); |
996b804d | 875 | #endif |
118bd841 RS |
876 | } |
877 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
878 | break; | |
879 | } | |
880 | } | |
ede4db72 | 881 | \f |
ede4db72 RS |
882 | /* Nonzero if any properties for DISPLAY and WINDOW |
883 | are on the list of what we are waiting for. */ | |
884 | ||
885 | static int | |
886 | waiting_for_other_props_on_window (display, window) | |
887 | Display *display; | |
888 | Window window; | |
889 | { | |
890 | struct prop_location *rest = property_change_wait_list; | |
891 | while (rest) | |
892 | if (rest->display == display && rest->window == window) | |
893 | return 1; | |
894 | else | |
895 | rest = rest->next; | |
896 | return 0; | |
897 | } | |
898 | ||
899 | /* Add an entry to the list of property changes we are waiting for. | |
900 | DISPLAY, WINDOW, PROPERTY, STATE describe what we will wait for. | |
901 | The return value is a number that uniquely identifies | |
902 | this awaited property change. */ | |
903 | ||
d1f21a66 | 904 | static struct prop_location * |
ede4db72 RS |
905 | expect_property_change (display, window, property, state) |
906 | Display *display; | |
907 | Window window; | |
6c070502 | 908 | Atom property; |
ede4db72 RS |
909 | int state; |
910 | { | |
911 | struct prop_location *pl | |
912 | = (struct prop_location *) xmalloc (sizeof (struct prop_location)); | |
2f65feb6 | 913 | pl->identifier = ++prop_location_identifier; |
ede4db72 RS |
914 | pl->display = display; |
915 | pl->window = window; | |
916 | pl->property = property; | |
917 | pl->desired_state = state; | |
918 | pl->next = property_change_wait_list; | |
d1f21a66 | 919 | pl->arrived = 0; |
ede4db72 | 920 | property_change_wait_list = pl; |
d1f21a66 | 921 | return pl; |
ede4db72 RS |
922 | } |
923 | ||
924 | /* Delete an entry from the list of property changes we are waiting for. | |
2f65feb6 | 925 | IDENTIFIER is the number that uniquely identifies the entry. */ |
ede4db72 RS |
926 | |
927 | static void | |
d1f21a66 RS |
928 | unexpect_property_change (location) |
929 | struct prop_location *location; | |
ede4db72 RS |
930 | { |
931 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
932 | while (rest) | |
933 | { | |
d1f21a66 | 934 | if (rest == location) |
ede4db72 RS |
935 | { |
936 | if (prev) | |
937 | prev->next = rest->next; | |
938 | else | |
939 | property_change_wait_list = rest->next; | |
4feb31b2 | 940 | xfree (rest); |
ede4db72 RS |
941 | return; |
942 | } | |
943 | prev = rest; | |
944 | rest = rest->next; | |
945 | } | |
946 | } | |
947 | ||
2f65feb6 RS |
948 | /* Remove the property change expectation element for IDENTIFIER. */ |
949 | ||
950 | static Lisp_Object | |
951 | wait_for_property_change_unwind (identifierval) | |
952 | Lisp_Object identifierval; | |
953 | { | |
c4898489 KH |
954 | unexpect_property_change ((struct prop_location *) |
955 | (XFASTINT (XCONS (identifierval)->car) << 16 | |
956 | | XFASTINT (XCONS (identifierval)->cdr))); | |
ab552306 | 957 | return Qnil; |
2f65feb6 RS |
958 | } |
959 | ||
ede4db72 | 960 | /* Actually wait for a property change. |
2f65feb6 | 961 | IDENTIFIER should be the value that expect_property_change returned. */ |
ede4db72 RS |
962 | |
963 | static void | |
d1f21a66 RS |
964 | wait_for_property_change (location) |
965 | struct prop_location *location; | |
ede4db72 | 966 | { |
2f65feb6 RS |
967 | int secs, usecs; |
968 | int count = specpdl_ptr - specpdl; | |
d1f21a66 RS |
969 | Lisp_Object tem; |
970 | ||
c4898489 KH |
971 | tem = Fcons (Qnil, Qnil); |
972 | XSETFASTINT (XCONS (tem)->car, (EMACS_UINT)location >> 16); | |
973 | XSETFASTINT (XCONS (tem)->cdr, (EMACS_UINT)location & 0xffff); | |
2f65feb6 RS |
974 | |
975 | /* Make sure to do unexpect_property_change if we quit or err. */ | |
d1f21a66 | 976 | record_unwind_protect (wait_for_property_change_unwind, tem); |
2f65feb6 | 977 | |
ede4db72 | 978 | XCONS (property_change_reply)->car = Qnil; |
2f65feb6 | 979 | |
afe1529d RS |
980 | property_change_reply_object = location; |
981 | /* If the event we are waiting for arrives beyond here, it will set | |
982 | property_change_reply, because property_change_reply_object says so. */ | |
d1f21a66 RS |
983 | if (! location->arrived) |
984 | { | |
d1f21a66 RS |
985 | secs = x_selection_timeout / 1000; |
986 | usecs = (x_selection_timeout % 1000) * 1000; | |
987 | wait_reading_process_input (secs, usecs, property_change_reply, 0); | |
988 | ||
989 | if (NILP (XCONS (property_change_reply)->car)) | |
606140dd | 990 | error ("Timed out waiting for property-notify event"); |
d1f21a66 | 991 | } |
2f65feb6 RS |
992 | |
993 | unbind_to (count, Qnil); | |
ede4db72 RS |
994 | } |
995 | ||
996 | /* Called from XTread_socket in response to a PropertyNotify event. */ | |
997 | ||
998 | void | |
999 | x_handle_property_notify (event) | |
1000 | XPropertyEvent *event; | |
1001 | { | |
1002 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
1003 | while (rest) | |
1004 | { | |
1005 | if (rest->property == event->atom | |
1006 | && rest->window == event->window | |
1007 | && rest->display == event->display | |
1008 | && rest->desired_state == event->state) | |
1009 | { | |
1010 | #if 0 | |
1011 | fprintf (stderr, "Saw expected prop-%s on %s\n", | |
1012 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a | 1013 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, event->display, |
ede4db72 RS |
1014 | event->atom)) |
1015 | ->name->data); | |
1016 | #endif | |
1017 | ||
d1f21a66 RS |
1018 | rest->arrived = 1; |
1019 | ||
ede4db72 RS |
1020 | /* If this is the one wait_for_property_change is waiting for, |
1021 | tell it to wake up. */ | |
d1f21a66 | 1022 | if (rest == property_change_reply_object) |
ede4db72 RS |
1023 | XCONS (property_change_reply)->car = Qt; |
1024 | ||
1025 | if (prev) | |
1026 | prev->next = rest->next; | |
1027 | else | |
1028 | property_change_wait_list = rest->next; | |
4feb31b2 | 1029 | xfree (rest); |
ede4db72 RS |
1030 | return; |
1031 | } | |
1032 | prev = rest; | |
1033 | rest = rest->next; | |
1034 | } | |
1035 | #if 0 | |
1036 | fprintf (stderr, "Saw UNexpected prop-%s on %s\n", | |
1037 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a RS |
1038 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, |
1039 | event->display, event->atom)) | |
ede4db72 RS |
1040 | ->name->data); |
1041 | #endif | |
1042 | } | |
1043 | ||
1044 | ||
1045 | \f | |
1046 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1047 | ||
1048 | static Lisp_Object | |
1049 | fetch_multiple_target (event) | |
1050 | XSelectionRequestEvent *event; | |
1051 | { | |
1052 | Display *display = event->display; | |
5d0ba25b | 1053 | Window window = event->requestor; |
ede4db72 RS |
1054 | Atom target = event->target; |
1055 | Atom selection_atom = event->selection; | |
1056 | int result; | |
1057 | ||
1058 | return | |
1059 | Fcons (QMULTIPLE, | |
1060 | x_get_window_property_as_lisp_data (display, window, target, | |
1061 | QMULTIPLE, selection_atom)); | |
1062 | } | |
1063 | ||
1064 | static Lisp_Object | |
1065 | copy_multiple_data (obj) | |
1066 | Lisp_Object obj; | |
1067 | { | |
1068 | Lisp_Object vec; | |
1069 | int i; | |
1070 | int size; | |
1071 | if (CONSP (obj)) | |
1072 | return Fcons (XCONS (obj)->car, copy_multiple_data (XCONS (obj)->cdr)); | |
1073 | ||
1074 | CHECK_VECTOR (obj, 0); | |
1075 | vec = Fmake_vector (size = XVECTOR (obj)->size, Qnil); | |
1076 | for (i = 0; i < size; i++) | |
1077 | { | |
1078 | Lisp_Object vec2 = XVECTOR (obj)->contents [i]; | |
1079 | CHECK_VECTOR (vec2, 0); | |
1080 | if (XVECTOR (vec2)->size != 2) | |
1081 | /* ??? Confusing error message */ | |
1082 | Fsignal (Qerror, Fcons (build_string ("vectors must be of length 2"), | |
1083 | Fcons (vec2, Qnil))); | |
1084 | XVECTOR (vec)->contents [i] = Fmake_vector (2, Qnil); | |
1085 | XVECTOR (XVECTOR (vec)->contents [i])->contents [0] | |
1086 | = XVECTOR (vec2)->contents [0]; | |
1087 | XVECTOR (XVECTOR (vec)->contents [i])->contents [1] | |
1088 | = XVECTOR (vec2)->contents [1]; | |
1089 | } | |
1090 | return vec; | |
1091 | } | |
1092 | ||
1093 | #endif | |
1094 | ||
1095 | \f | |
1096 | /* Variables for communication with x_handle_selection_notify. */ | |
1097 | static Atom reading_which_selection; | |
1098 | static Lisp_Object reading_selection_reply; | |
1099 | static Window reading_selection_window; | |
1100 | ||
1101 | /* Do protocol to read selection-data from the server. | |
1102 | Converts this to Lisp data and returns it. */ | |
1103 | ||
1104 | static Lisp_Object | |
1105 | x_get_foreign_selection (selection_symbol, target_type) | |
1106 | Lisp_Object selection_symbol, target_type; | |
1107 | { | |
5d0ba25b | 1108 | Window requestor_window = FRAME_X_WINDOW (selected_frame); |
3834c318 | 1109 | Display *display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1110 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
5d0ba25b | 1111 | Time requestor_time = last_event_timestamp; |
5c3a351a RS |
1112 | Atom target_property = dpyinfo->Xatom_EMACS_TMP; |
1113 | Atom selection_atom = symbol_to_x_atom (dpyinfo, display, selection_symbol); | |
ede4db72 | 1114 | Atom type_atom; |
80da0190 | 1115 | int secs, usecs; |
5a499696 | 1116 | int count; |
55b2d45d | 1117 | Lisp_Object frame; |
ede4db72 RS |
1118 | |
1119 | if (CONSP (target_type)) | |
5c3a351a | 1120 | type_atom = symbol_to_x_atom (dpyinfo, display, XCONS (target_type)->car); |
ede4db72 | 1121 | else |
5c3a351a | 1122 | type_atom = symbol_to_x_atom (dpyinfo, display, target_type); |
ede4db72 RS |
1123 | |
1124 | BLOCK_INPUT; | |
5a499696 | 1125 | count = x_catch_errors (display); |
ede4db72 | 1126 | XConvertSelection (display, selection_atom, type_atom, target_property, |
5d0ba25b | 1127 | requestor_window, requestor_time); |
5c3a351a | 1128 | XFlush (display); |
ede4db72 RS |
1129 | |
1130 | /* Prepare to block until the reply has been read. */ | |
5d0ba25b | 1131 | reading_selection_window = requestor_window; |
ede4db72 RS |
1132 | reading_which_selection = selection_atom; |
1133 | XCONS (reading_selection_reply)->car = Qnil; | |
55b2d45d RS |
1134 | |
1135 | frame = some_frame_on_display (dpyinfo); | |
1136 | ||
1137 | /* If the display no longer has frames, we can't expect | |
1138 | to get many more selection requests from it, so don't | |
1139 | bother trying to queue them. */ | |
1140 | if (!NILP (frame)) | |
1141 | { | |
1142 | x_start_queuing_selection_requests (display); | |
1143 | ||
1144 | record_unwind_protect (queue_selection_requests_unwind, | |
1145 | frame); | |
1146 | } | |
ede4db72 RS |
1147 | UNBLOCK_INPUT; |
1148 | ||
80da0190 RS |
1149 | /* This allows quits. Also, don't wait forever. */ |
1150 | secs = x_selection_timeout / 1000; | |
1151 | usecs = (x_selection_timeout % 1000) * 1000; | |
1152 | wait_reading_process_input (secs, usecs, reading_selection_reply, 0); | |
ede4db72 | 1153 | |
7c6b2ea4 | 1154 | BLOCK_INPUT; |
a7b24d46 | 1155 | x_check_errors (display, "Cannot get selection: %s"); |
5a499696 | 1156 | x_uncatch_errors (display, count); |
7c6b2ea4 RS |
1157 | UNBLOCK_INPUT; |
1158 | ||
ede4db72 | 1159 | if (NILP (XCONS (reading_selection_reply)->car)) |
606140dd KH |
1160 | error ("Timed out waiting for reply from selection owner"); |
1161 | if (EQ (XCONS (reading_selection_reply)->car, Qlambda)) | |
1162 | error ("No `%s' selection", XSYMBOL (selection_symbol)->name->data); | |
ede4db72 RS |
1163 | |
1164 | /* Otherwise, the selection is waiting for us on the requested property. */ | |
1165 | return | |
5d0ba25b | 1166 | x_get_window_property_as_lisp_data (display, requestor_window, |
ede4db72 RS |
1167 | target_property, target_type, |
1168 | selection_atom); | |
1169 | } | |
1170 | \f | |
1171 | /* Subroutines of x_get_window_property_as_lisp_data */ | |
1172 | ||
4feb31b2 | 1173 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1174 | |
ede4db72 RS |
1175 | static void |
1176 | x_get_window_property (display, window, property, data_ret, bytes_ret, | |
1177 | actual_type_ret, actual_format_ret, actual_size_ret, | |
1178 | delete_p) | |
1179 | Display *display; | |
1180 | Window window; | |
1181 | Atom property; | |
1182 | unsigned char **data_ret; | |
1183 | int *bytes_ret; | |
1184 | Atom *actual_type_ret; | |
1185 | int *actual_format_ret; | |
1186 | unsigned long *actual_size_ret; | |
1187 | int delete_p; | |
1188 | { | |
1189 | int total_size; | |
1190 | unsigned long bytes_remaining; | |
1191 | int offset = 0; | |
1192 | unsigned char *tmp_data = 0; | |
1193 | int result; | |
1194 | int buffer_size = SELECTION_QUANTUM (display); | |
1195 | if (buffer_size > MAX_SELECTION_QUANTUM) buffer_size = MAX_SELECTION_QUANTUM; | |
1196 | ||
1197 | BLOCK_INPUT; | |
1198 | /* First probe the thing to find out how big it is. */ | |
1199 | result = XGetWindowProperty (display, window, property, | |
137edb72 | 1200 | 0L, 0L, False, AnyPropertyType, |
ede4db72 RS |
1201 | actual_type_ret, actual_format_ret, |
1202 | actual_size_ret, | |
1203 | &bytes_remaining, &tmp_data); | |
ede4db72 RS |
1204 | if (result != Success) |
1205 | { | |
2f65feb6 | 1206 | UNBLOCK_INPUT; |
ede4db72 RS |
1207 | *data_ret = 0; |
1208 | *bytes_ret = 0; | |
1209 | return; | |
1210 | } | |
0158abbc RS |
1211 | /* This was allocated by Xlib, so use XFree. */ |
1212 | XFree ((char *) tmp_data); | |
ede4db72 RS |
1213 | |
1214 | if (*actual_type_ret == None || *actual_format_ret == 0) | |
1215 | { | |
2f65feb6 | 1216 | UNBLOCK_INPUT; |
ede4db72 RS |
1217 | return; |
1218 | } | |
1219 | ||
1220 | total_size = bytes_remaining + 1; | |
1221 | *data_ret = (unsigned char *) xmalloc (total_size); | |
1222 | ||
2a1a4c9d | 1223 | /* Now read, until we've gotten it all. */ |
ede4db72 RS |
1224 | while (bytes_remaining) |
1225 | { | |
1226 | #if 0 | |
1227 | int last = bytes_remaining; | |
1228 | #endif | |
1229 | result | |
1230 | = XGetWindowProperty (display, window, property, | |
137edb72 | 1231 | (long)offset/4, (long)buffer_size/4, |
2f65feb6 | 1232 | False, |
ede4db72 RS |
1233 | AnyPropertyType, |
1234 | actual_type_ret, actual_format_ret, | |
1235 | actual_size_ret, &bytes_remaining, &tmp_data); | |
1236 | #if 0 | |
1237 | fprintf (stderr, "<< read %d\n", last-bytes_remaining); | |
1238 | #endif | |
1239 | /* If this doesn't return Success at this point, it means that | |
1240 | some clod deleted the selection while we were in the midst of | |
1241 | reading it. Deal with that, I guess.... | |
1242 | */ | |
1243 | if (result != Success) break; | |
1244 | *actual_size_ret *= *actual_format_ret / 8; | |
1245 | bcopy (tmp_data, (*data_ret) + offset, *actual_size_ret); | |
1246 | offset += *actual_size_ret; | |
0158abbc RS |
1247 | /* This was allocated by Xlib, so use XFree. */ |
1248 | XFree ((char *) tmp_data); | |
ede4db72 | 1249 | } |
2f65feb6 | 1250 | |
5c3a351a | 1251 | XFlush (display); |
ede4db72 RS |
1252 | UNBLOCK_INPUT; |
1253 | *bytes_ret = offset; | |
1254 | } | |
1255 | \f | |
4feb31b2 | 1256 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1257 | |
ede4db72 RS |
1258 | static void |
1259 | receive_incremental_selection (display, window, property, target_type, | |
1260 | min_size_bytes, data_ret, size_bytes_ret, | |
1261 | type_ret, format_ret, size_ret) | |
1262 | Display *display; | |
1263 | Window window; | |
1264 | Atom property; | |
1265 | Lisp_Object target_type; /* for error messages only */ | |
1266 | unsigned int min_size_bytes; | |
1267 | unsigned char **data_ret; | |
1268 | int *size_bytes_ret; | |
1269 | Atom *type_ret; | |
1270 | unsigned long *size_ret; | |
1271 | int *format_ret; | |
1272 | { | |
1273 | int offset = 0; | |
d1f21a66 | 1274 | struct prop_location *wait_object; |
ede4db72 RS |
1275 | *size_bytes_ret = min_size_bytes; |
1276 | *data_ret = (unsigned char *) xmalloc (*size_bytes_ret); | |
1277 | #if 0 | |
1278 | fprintf (stderr, "\nread INCR %d\n", min_size_bytes); | |
1279 | #endif | |
2f65feb6 RS |
1280 | |
1281 | /* At this point, we have read an INCR property. | |
1282 | Delete the property to ack it. | |
1283 | (But first, prepare to receive the next event in this handshake.) | |
ede4db72 RS |
1284 | |
1285 | Now, we must loop, waiting for the sending window to put a value on | |
1286 | that property, then reading the property, then deleting it to ack. | |
1287 | We are done when the sender places a property of length 0. | |
1288 | */ | |
2f65feb6 RS |
1289 | BLOCK_INPUT; |
1290 | XSelectInput (display, window, STANDARD_EVENT_SET | PropertyChangeMask); | |
1291 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1292 | wait_object = expect_property_change (display, window, property, |
1293 | PropertyNewValue); | |
5c3a351a | 1294 | XFlush (display); |
2f65feb6 RS |
1295 | UNBLOCK_INPUT; |
1296 | ||
ede4db72 RS |
1297 | while (1) |
1298 | { | |
1299 | unsigned char *tmp_data; | |
1300 | int tmp_size_bytes; | |
d1f21a66 | 1301 | wait_for_property_change (wait_object); |
ede4db72 | 1302 | /* expect it again immediately, because x_get_window_property may |
2a1a4c9d | 1303 | .. no it won't, I don't get it. |
ede4db72 RS |
1304 | .. Ok, I get it now, the Xt code that implements INCR is broken. |
1305 | */ | |
ede4db72 RS |
1306 | x_get_window_property (display, window, property, |
1307 | &tmp_data, &tmp_size_bytes, | |
1308 | type_ret, format_ret, size_ret, 1); | |
1309 | ||
1310 | if (tmp_size_bytes == 0) /* we're done */ | |
1311 | { | |
1312 | #if 0 | |
1313 | fprintf (stderr, " read INCR done\n"); | |
1314 | #endif | |
2f65feb6 RS |
1315 | if (! waiting_for_other_props_on_window (display, window)) |
1316 | XSelectInput (display, window, STANDARD_EVENT_SET); | |
d1f21a66 | 1317 | unexpect_property_change (wait_object); |
4feb31b2 | 1318 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1319 | calls xmalloc itself. */ |
4feb31b2 | 1320 | if (tmp_data) xfree (tmp_data); |
ede4db72 RS |
1321 | break; |
1322 | } | |
2f65feb6 RS |
1323 | |
1324 | BLOCK_INPUT; | |
1325 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1326 | wait_object = expect_property_change (display, window, property, |
1327 | PropertyNewValue); | |
5c3a351a | 1328 | XFlush (display); |
2f65feb6 RS |
1329 | UNBLOCK_INPUT; |
1330 | ||
ede4db72 RS |
1331 | #if 0 |
1332 | fprintf (stderr, " read INCR %d\n", tmp_size_bytes); | |
1333 | #endif | |
1334 | if (*size_bytes_ret < offset + tmp_size_bytes) | |
1335 | { | |
1336 | #if 0 | |
1337 | fprintf (stderr, " read INCR realloc %d -> %d\n", | |
1338 | *size_bytes_ret, offset + tmp_size_bytes); | |
1339 | #endif | |
1340 | *size_bytes_ret = offset + tmp_size_bytes; | |
1341 | *data_ret = (unsigned char *) xrealloc (*data_ret, *size_bytes_ret); | |
1342 | } | |
018cfa07 | 1343 | bcopy (tmp_data, (*data_ret) + offset, tmp_size_bytes); |
ede4db72 | 1344 | offset += tmp_size_bytes; |
4feb31b2 | 1345 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1346 | calls xmalloc itself. */ |
4feb31b2 | 1347 | xfree (tmp_data); |
ede4db72 RS |
1348 | } |
1349 | } | |
1350 | \f | |
1351 | /* Once a requested selection is "ready" (we got a SelectionNotify event), | |
1352 | fetch value from property PROPERTY of X window WINDOW on display DISPLAY. | |
1353 | TARGET_TYPE and SELECTION_ATOM are used in error message if this fails. */ | |
1354 | ||
1355 | static Lisp_Object | |
1356 | x_get_window_property_as_lisp_data (display, window, property, target_type, | |
1357 | selection_atom) | |
1358 | Display *display; | |
1359 | Window window; | |
1360 | Atom property; | |
1361 | Lisp_Object target_type; /* for error messages only */ | |
1362 | Atom selection_atom; /* for error messages only */ | |
1363 | { | |
1364 | Atom actual_type; | |
1365 | int actual_format; | |
1366 | unsigned long actual_size; | |
1367 | unsigned char *data = 0; | |
1368 | int bytes = 0; | |
1369 | Lisp_Object val; | |
5c3a351a | 1370 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 RS |
1371 | |
1372 | x_get_window_property (display, window, property, &data, &bytes, | |
1373 | &actual_type, &actual_format, &actual_size, 1); | |
1374 | if (! data) | |
1375 | { | |
1376 | int there_is_a_selection_owner; | |
1377 | BLOCK_INPUT; | |
1378 | there_is_a_selection_owner | |
1379 | = XGetSelectionOwner (display, selection_atom); | |
1380 | UNBLOCK_INPUT; | |
5a499696 RS |
1381 | Fsignal (Qerror, |
1382 | there_is_a_selection_owner | |
1383 | ? Fcons (build_string ("selection owner couldn't convert"), | |
ede4db72 RS |
1384 | actual_type |
1385 | ? Fcons (target_type, | |
5c3a351a RS |
1386 | Fcons (x_atom_to_symbol (dpyinfo, display, |
1387 | actual_type), | |
ede4db72 RS |
1388 | Qnil)) |
1389 | : Fcons (target_type, Qnil)) | |
5a499696 RS |
1390 | : Fcons (build_string ("no selection"), |
1391 | Fcons (x_atom_to_symbol (dpyinfo, display, | |
1392 | selection_atom), | |
1393 | Qnil))); | |
ede4db72 RS |
1394 | } |
1395 | ||
5c3a351a | 1396 | if (actual_type == dpyinfo->Xatom_INCR) |
ede4db72 RS |
1397 | { |
1398 | /* That wasn't really the data, just the beginning. */ | |
1399 | ||
1400 | unsigned int min_size_bytes = * ((unsigned int *) data); | |
1401 | BLOCK_INPUT; | |
4feb31b2 | 1402 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1403 | calls xmalloc itself. */ |
4feb31b2 | 1404 | xfree ((char *) data); |
ede4db72 RS |
1405 | UNBLOCK_INPUT; |
1406 | receive_incremental_selection (display, window, property, target_type, | |
1407 | min_size_bytes, &data, &bytes, | |
1408 | &actual_type, &actual_format, | |
1409 | &actual_size); | |
1410 | } | |
1411 | ||
2f65feb6 RS |
1412 | BLOCK_INPUT; |
1413 | XDeleteProperty (display, window, property); | |
5c3a351a | 1414 | XFlush (display); |
2f65feb6 RS |
1415 | UNBLOCK_INPUT; |
1416 | ||
ede4db72 RS |
1417 | /* It's been read. Now convert it to a lisp object in some semi-rational |
1418 | manner. */ | |
1419 | val = selection_data_to_lisp_data (display, data, bytes, | |
1420 | actual_type, actual_format); | |
1421 | ||
4feb31b2 | 1422 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1423 | calls xmalloc itself. */ |
4feb31b2 | 1424 | xfree ((char *) data); |
ede4db72 RS |
1425 | return val; |
1426 | } | |
1427 | \f | |
1428 | /* These functions convert from the selection data read from the server into | |
1429 | something that we can use from Lisp, and vice versa. | |
1430 | ||
1431 | Type: Format: Size: Lisp Type: | |
1432 | ----- ------- ----- ----------- | |
1433 | * 8 * String | |
1434 | ATOM 32 1 Symbol | |
1435 | ATOM 32 > 1 Vector of Symbols | |
1436 | * 16 1 Integer | |
1437 | * 16 > 1 Vector of Integers | |
1438 | * 32 1 if <=16 bits: Integer | |
1439 | if > 16 bits: Cons of top16, bot16 | |
1440 | * 32 > 1 Vector of the above | |
1441 | ||
1442 | When converting a Lisp number to C, it is assumed to be of format 16 if | |
1443 | it is an integer, and of format 32 if it is a cons of two integers. | |
1444 | ||
1445 | When converting a vector of numbers from Lisp to C, it is assumed to be | |
1446 | of format 16 if every element in the vector is an integer, and is assumed | |
1447 | to be of format 32 if any element is a cons of two integers. | |
1448 | ||
1449 | When converting an object to C, it may be of the form (SYMBOL . <data>) | |
1450 | where SYMBOL is what we should claim that the type is. Format and | |
1451 | representation are as above. */ | |
1452 | ||
1453 | ||
1454 | ||
1455 | static Lisp_Object | |
1456 | selection_data_to_lisp_data (display, data, size, type, format) | |
1457 | Display *display; | |
1458 | unsigned char *data; | |
1459 | Atom type; | |
1460 | int size, format; | |
1461 | { | |
5c3a351a | 1462 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1463 | |
5c3a351a | 1464 | if (type == dpyinfo->Xatom_NULL) |
ede4db72 RS |
1465 | return QNULL; |
1466 | ||
1467 | /* Convert any 8-bit data to a string, for compactness. */ | |
1468 | else if (format == 8) | |
e6c7c988 KH |
1469 | { |
1470 | Lisp_Object str; | |
f78da51e KH |
1471 | int require_encoding = 0; |
1472 | ||
5faa9b45 | 1473 | if (! NILP (buffer_defaults.enable_multibyte_characters)) |
f78da51e | 1474 | { |
5faa9b45 KH |
1475 | /* If TYPE is `TEXT' or `COMPOUND_TEXT', we should decode |
1476 | DATA to Emacs internal format because DATA may be encoded | |
1477 | in compound text format. In addtion, if TYPE is `STRING' | |
1478 | and DATA contains any 8-bit Latin-1 code, we should also | |
1479 | decode it. */ | |
1480 | if (type == dpyinfo->Xatom_TEXT | |
1481 | || type == dpyinfo->Xatom_COMPOUND_TEXT) | |
1482 | require_encoding = 1; | |
1483 | else if (type == XA_STRING) | |
f78da51e | 1484 | { |
5faa9b45 KH |
1485 | int i; |
1486 | for (i = 0; i < size; i++) | |
f78da51e | 1487 | { |
5faa9b45 KH |
1488 | if (data[i] >= 0x80) |
1489 | { | |
1490 | require_encoding = 1; | |
1491 | break; | |
1492 | } | |
f78da51e KH |
1493 | } |
1494 | } | |
1495 | } | |
1496 | if (!require_encoding) | |
061bda8d KH |
1497 | { |
1498 | str = make_unibyte_string ((char *) data, size); | |
1499 | Vlast_coding_system_used = Qraw_text; | |
1500 | } | |
e6c7c988 KH |
1501 | else |
1502 | { | |
9391d06a | 1503 | int bufsize; |
e6c7c988 KH |
1504 | unsigned char *buf; |
1505 | struct coding_system coding; | |
e6c7c988 | 1506 | |
2584c9ec | 1507 | setup_coding_system |
93e4ce1b | 1508 | (Fcheck_coding_system(Vselection_coding_system), &coding); |
9391d06a | 1509 | coding.mode |= CODING_MODE_LAST_BLOCK; |
e6c7c988 KH |
1510 | bufsize = decoding_buffer_size (&coding, size); |
1511 | buf = (unsigned char *) xmalloc (bufsize); | |
9391d06a | 1512 | decode_coding (&coding, data, buf, size, bufsize); |
25b98b34 KH |
1513 | size = (coding.fake_multibyte |
1514 | ? multibyte_chars_in_text (buf, coding.produced) | |
1515 | : coding.produced_char); | |
1516 | str = make_string_from_bytes ((char *) buf, size, coding.produced); | |
4feb31b2 | 1517 | xfree (buf); |
061bda8d | 1518 | Vlast_coding_system_used = coding.symbol; |
e6c7c988 KH |
1519 | } |
1520 | return str; | |
1521 | } | |
ede4db72 RS |
1522 | /* Convert a single atom to a Lisp_Symbol. Convert a set of atoms to |
1523 | a vector of symbols. | |
1524 | */ | |
1525 | else if (type == XA_ATOM) | |
1526 | { | |
1527 | int i; | |
1528 | if (size == sizeof (Atom)) | |
5c3a351a | 1529 | return x_atom_to_symbol (dpyinfo, display, *((Atom *) data)); |
ede4db72 RS |
1530 | else |
1531 | { | |
e607a484 RS |
1532 | Lisp_Object v = Fmake_vector (make_number (size / sizeof (Atom)), |
1533 | make_number (0)); | |
ede4db72 | 1534 | for (i = 0; i < size / sizeof (Atom); i++) |
e607a484 RS |
1535 | Faset (v, make_number (i), |
1536 | x_atom_to_symbol (dpyinfo, display, ((Atom *) data) [i])); | |
ede4db72 RS |
1537 | return v; |
1538 | } | |
1539 | } | |
1540 | ||
1541 | /* Convert a single 16 or small 32 bit number to a Lisp_Int. | |
1542 | If the number is > 16 bits, convert it to a cons of integers, | |
1543 | 16 bits in each half. | |
1544 | */ | |
1545 | else if (format == 32 && size == sizeof (long)) | |
1546 | return long_to_cons (((unsigned long *) data) [0]); | |
1547 | else if (format == 16 && size == sizeof (short)) | |
1548 | return make_number ((int) (((unsigned short *) data) [0])); | |
1549 | ||
1550 | /* Convert any other kind of data to a vector of numbers, represented | |
1551 | as above (as an integer, or a cons of two 16 bit integers.) | |
1552 | */ | |
1553 | else if (format == 16) | |
1554 | { | |
1555 | int i; | |
937a3875 RS |
1556 | Lisp_Object v; |
1557 | v = Fmake_vector (make_number (size / 2), make_number (0)); | |
1558 | for (i = 0; i < size / 2; i++) | |
ede4db72 RS |
1559 | { |
1560 | int j = (int) ((unsigned short *) data) [i]; | |
e607a484 | 1561 | Faset (v, make_number (i), make_number (j)); |
ede4db72 RS |
1562 | } |
1563 | return v; | |
1564 | } | |
1565 | else | |
1566 | { | |
1567 | int i; | |
e607a484 | 1568 | Lisp_Object v = Fmake_vector (make_number (size / 4), make_number (0)); |
ede4db72 RS |
1569 | for (i = 0; i < size / 4; i++) |
1570 | { | |
1571 | unsigned long j = ((unsigned long *) data) [i]; | |
e607a484 | 1572 | Faset (v, make_number (i), long_to_cons (j)); |
ede4db72 RS |
1573 | } |
1574 | return v; | |
1575 | } | |
1576 | } | |
1577 | ||
1578 | ||
4feb31b2 | 1579 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1580 | |
ede4db72 RS |
1581 | static void |
1582 | lisp_data_to_selection_data (display, obj, | |
aca39f42 RS |
1583 | data_ret, type_ret, size_ret, |
1584 | format_ret, nofree_ret) | |
ede4db72 RS |
1585 | Display *display; |
1586 | Lisp_Object obj; | |
1587 | unsigned char **data_ret; | |
1588 | Atom *type_ret; | |
1589 | unsigned int *size_ret; | |
1590 | int *format_ret; | |
aca39f42 | 1591 | int *nofree_ret; |
ede4db72 RS |
1592 | { |
1593 | Lisp_Object type = Qnil; | |
5c3a351a | 1594 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
aca39f42 RS |
1595 | |
1596 | *nofree_ret = 0; | |
1597 | ||
ede4db72 RS |
1598 | if (CONSP (obj) && SYMBOLP (XCONS (obj)->car)) |
1599 | { | |
1600 | type = XCONS (obj)->car; | |
1601 | obj = XCONS (obj)->cdr; | |
1602 | if (CONSP (obj) && NILP (XCONS (obj)->cdr)) | |
1603 | obj = XCONS (obj)->car; | |
1604 | } | |
1605 | ||
1606 | if (EQ (obj, QNULL) || (EQ (type, QNULL))) | |
1607 | { /* This is not the same as declining */ | |
1608 | *format_ret = 32; | |
1609 | *size_ret = 0; | |
1610 | *data_ret = 0; | |
1611 | type = QNULL; | |
1612 | } | |
1613 | else if (STRINGP (obj)) | |
1614 | { | |
e6c7c988 KH |
1615 | /* Since we are now handling multilingual text, we must consider |
1616 | sending back compound text. */ | |
fb5e77f7 | 1617 | int charsets[MAX_CHARSET + 1]; |
e6c7c988 KH |
1618 | int num; |
1619 | ||
ede4db72 | 1620 | *format_ret = 8; |
fc932ac6 | 1621 | *size_ret = STRING_BYTES (XSTRING (obj)); |
aca39f42 | 1622 | *data_ret = XSTRING (obj)->data; |
fb5e77f7 | 1623 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
5faa9b45 KH |
1624 | num = ((*size_ret <= 1 /* Check the possibility of short cut. */ |
1625 | || NILP (buffer_defaults.enable_multibyte_characters)) | |
e6c7c988 | 1626 | ? 0 |
e550dcb2 | 1627 | : find_charset_in_str (*data_ret, *size_ret, charsets, Qnil, 1)); |
e6c7c988 KH |
1628 | |
1629 | if (!num || (num == 1 && charsets[CHARSET_ASCII])) | |
1630 | { | |
1631 | /* No multibyte character in OBJ. We need not encode it. */ | |
1632 | *nofree_ret = 1; | |
1633 | if (NILP (type)) type = QSTRING; | |
061bda8d | 1634 | Vlast_coding_system_used = Qraw_text; |
e6c7c988 KH |
1635 | } |
1636 | else | |
1637 | { | |
1638 | /* We must encode contents of OBJ to compound text format. | |
1639 | The format is compatible with what the target `STRING' | |
1640 | expects if OBJ contains only ASCII and Latin-1 | |
1641 | characters. */ | |
9391d06a | 1642 | int bufsize; |
e6c7c988 KH |
1643 | unsigned char *buf; |
1644 | struct coding_system coding; | |
e6c7c988 | 1645 | |
2584c9ec | 1646 | setup_coding_system |
93e4ce1b | 1647 | (Fcheck_coding_system (Vselection_coding_system), &coding); |
9391d06a | 1648 | coding.mode |= CODING_MODE_LAST_BLOCK; |
e6c7c988 KH |
1649 | bufsize = encoding_buffer_size (&coding, *size_ret); |
1650 | buf = (unsigned char *) xmalloc (bufsize); | |
9391d06a KH |
1651 | encode_coding (&coding, *data_ret, buf, *size_ret, bufsize); |
1652 | *size_ret = coding.produced; | |
e6c7c988 | 1653 | *data_ret = buf; |
5faa9b45 | 1654 | if (charsets[charset_latin_iso8859_1] |
e6c7c988 KH |
1655 | && (num == 1 || (num == 2 && charsets[CHARSET_ASCII]))) |
1656 | { | |
1657 | /* Ok, we can return it as `STRING'. */ | |
1658 | if (NILP (type)) type = QSTRING; | |
1659 | } | |
1660 | else | |
1661 | { | |
1662 | /* We must return it as `COMPOUND_TEXT'. */ | |
1663 | if (NILP (type)) type = QCOMPOUND_TEXT; | |
1664 | } | |
061bda8d | 1665 | Vlast_coding_system_used = coding.symbol; |
e6c7c988 | 1666 | } |
ede4db72 RS |
1667 | } |
1668 | else if (SYMBOLP (obj)) | |
1669 | { | |
1670 | *format_ret = 32; | |
1671 | *size_ret = 1; | |
1672 | *data_ret = (unsigned char *) xmalloc (sizeof (Atom) + 1); | |
1673 | (*data_ret) [sizeof (Atom)] = 0; | |
5c3a351a | 1674 | (*(Atom **) data_ret) [0] = symbol_to_x_atom (dpyinfo, display, obj); |
ede4db72 RS |
1675 | if (NILP (type)) type = QATOM; |
1676 | } | |
7da64e5c | 1677 | else if (INTEGERP (obj) |
ede4db72 RS |
1678 | && XINT (obj) < 0xFFFF |
1679 | && XINT (obj) > -0xFFFF) | |
1680 | { | |
1681 | *format_ret = 16; | |
1682 | *size_ret = 1; | |
1683 | *data_ret = (unsigned char *) xmalloc (sizeof (short) + 1); | |
1684 | (*data_ret) [sizeof (short)] = 0; | |
1685 | (*(short **) data_ret) [0] = (short) XINT (obj); | |
1686 | if (NILP (type)) type = QINTEGER; | |
1687 | } | |
a87ed99c RS |
1688 | else if (INTEGERP (obj) |
1689 | || (CONSP (obj) && INTEGERP (XCONS (obj)->car) | |
1690 | && (INTEGERP (XCONS (obj)->cdr) | |
1691 | || (CONSP (XCONS (obj)->cdr) | |
1692 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car))))) | |
ede4db72 RS |
1693 | { |
1694 | *format_ret = 32; | |
1695 | *size_ret = 1; | |
1696 | *data_ret = (unsigned char *) xmalloc (sizeof (long) + 1); | |
1697 | (*data_ret) [sizeof (long)] = 0; | |
1698 | (*(unsigned long **) data_ret) [0] = cons_to_long (obj); | |
1699 | if (NILP (type)) type = QINTEGER; | |
1700 | } | |
1701 | else if (VECTORP (obj)) | |
1702 | { | |
1703 | /* Lisp_Vectors may represent a set of ATOMs; | |
1704 | a set of 16 or 32 bit INTEGERs; | |
1705 | or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...] | |
1706 | */ | |
1707 | int i; | |
1708 | ||
1709 | if (SYMBOLP (XVECTOR (obj)->contents [0])) | |
1710 | /* This vector is an ATOM set */ | |
1711 | { | |
1712 | if (NILP (type)) type = QATOM; | |
1713 | *size_ret = XVECTOR (obj)->size; | |
1714 | *format_ret = 32; | |
1715 | *data_ret = (unsigned char *) xmalloc ((*size_ret) * sizeof (Atom)); | |
1716 | for (i = 0; i < *size_ret; i++) | |
1717 | if (SYMBOLP (XVECTOR (obj)->contents [i])) | |
1718 | (*(Atom **) data_ret) [i] | |
5c3a351a | 1719 | = symbol_to_x_atom (dpyinfo, display, XVECTOR (obj)->contents [i]); |
ede4db72 RS |
1720 | else |
1721 | Fsignal (Qerror, /* Qselection_error */ | |
1722 | Fcons (build_string | |
1723 | ("all elements of selection vector must have same type"), | |
1724 | Fcons (obj, Qnil))); | |
1725 | } | |
1726 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1727 | else if (VECTORP (XVECTOR (obj)->contents [0])) | |
1728 | /* This vector is an ATOM_PAIR set */ | |
1729 | { | |
1730 | if (NILP (type)) type = QATOM_PAIR; | |
1731 | *size_ret = XVECTOR (obj)->size; | |
1732 | *format_ret = 32; | |
1733 | *data_ret = (unsigned char *) | |
1734 | xmalloc ((*size_ret) * sizeof (Atom) * 2); | |
1735 | for (i = 0; i < *size_ret; i++) | |
1736 | if (VECTORP (XVECTOR (obj)->contents [i])) | |
1737 | { | |
1738 | Lisp_Object pair = XVECTOR (obj)->contents [i]; | |
1739 | if (XVECTOR (pair)->size != 2) | |
1740 | Fsignal (Qerror, | |
1741 | Fcons (build_string | |
1742 | ("elements of the vector must be vectors of exactly two elements"), | |
1743 | Fcons (pair, Qnil))); | |
1744 | ||
1745 | (*(Atom **) data_ret) [i * 2] | |
5c3a351a RS |
1746 | = symbol_to_x_atom (dpyinfo, display, |
1747 | XVECTOR (pair)->contents [0]); | |
ede4db72 | 1748 | (*(Atom **) data_ret) [(i * 2) + 1] |
5c3a351a RS |
1749 | = symbol_to_x_atom (dpyinfo, display, |
1750 | XVECTOR (pair)->contents [1]); | |
ede4db72 RS |
1751 | } |
1752 | else | |
1753 | Fsignal (Qerror, | |
1754 | Fcons (build_string | |
1755 | ("all elements of the vector must be of the same type"), | |
1756 | Fcons (obj, Qnil))); | |
1757 | ||
1758 | } | |
1759 | #endif | |
1760 | else | |
1761 | /* This vector is an INTEGER set, or something like it */ | |
1762 | { | |
1763 | *size_ret = XVECTOR (obj)->size; | |
1764 | if (NILP (type)) type = QINTEGER; | |
1765 | *format_ret = 16; | |
1766 | for (i = 0; i < *size_ret; i++) | |
1767 | if (CONSP (XVECTOR (obj)->contents [i])) | |
1768 | *format_ret = 32; | |
7da64e5c | 1769 | else if (!INTEGERP (XVECTOR (obj)->contents [i])) |
ede4db72 RS |
1770 | Fsignal (Qerror, /* Qselection_error */ |
1771 | Fcons (build_string | |
1772 | ("elements of selection vector must be integers or conses of integers"), | |
1773 | Fcons (obj, Qnil))); | |
1774 | ||
1775 | *data_ret = (unsigned char *) xmalloc (*size_ret * (*format_ret/8)); | |
1776 | for (i = 0; i < *size_ret; i++) | |
1777 | if (*format_ret == 32) | |
1778 | (*((unsigned long **) data_ret)) [i] | |
1779 | = cons_to_long (XVECTOR (obj)->contents [i]); | |
1780 | else | |
1781 | (*((unsigned short **) data_ret)) [i] | |
1782 | = (unsigned short) cons_to_long (XVECTOR (obj)->contents [i]); | |
1783 | } | |
1784 | } | |
1785 | else | |
1786 | Fsignal (Qerror, /* Qselection_error */ | |
1787 | Fcons (build_string ("unrecognised selection data"), | |
1788 | Fcons (obj, Qnil))); | |
1789 | ||
5c3a351a | 1790 | *type_ret = symbol_to_x_atom (dpyinfo, display, type); |
ede4db72 RS |
1791 | } |
1792 | ||
1793 | static Lisp_Object | |
1794 | clean_local_selection_data (obj) | |
1795 | Lisp_Object obj; | |
1796 | { | |
1797 | if (CONSP (obj) | |
7da64e5c | 1798 | && INTEGERP (XCONS (obj)->car) |
ede4db72 | 1799 | && CONSP (XCONS (obj)->cdr) |
7da64e5c | 1800 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car) |
ede4db72 RS |
1801 | && NILP (XCONS (XCONS (obj)->cdr)->cdr)) |
1802 | obj = Fcons (XCONS (obj)->car, XCONS (obj)->cdr); | |
1803 | ||
1804 | if (CONSP (obj) | |
7da64e5c RS |
1805 | && INTEGERP (XCONS (obj)->car) |
1806 | && INTEGERP (XCONS (obj)->cdr)) | |
ede4db72 RS |
1807 | { |
1808 | if (XINT (XCONS (obj)->car) == 0) | |
1809 | return XCONS (obj)->cdr; | |
1810 | if (XINT (XCONS (obj)->car) == -1) | |
1811 | return make_number (- XINT (XCONS (obj)->cdr)); | |
1812 | } | |
1813 | if (VECTORP (obj)) | |
1814 | { | |
1815 | int i; | |
1816 | int size = XVECTOR (obj)->size; | |
1817 | Lisp_Object copy; | |
1818 | if (size == 1) | |
1819 | return clean_local_selection_data (XVECTOR (obj)->contents [0]); | |
e607a484 | 1820 | copy = Fmake_vector (make_number (size), Qnil); |
ede4db72 RS |
1821 | for (i = 0; i < size; i++) |
1822 | XVECTOR (copy)->contents [i] | |
1823 | = clean_local_selection_data (XVECTOR (obj)->contents [i]); | |
1824 | return copy; | |
1825 | } | |
1826 | return obj; | |
1827 | } | |
1828 | \f | |
1829 | /* Called from XTread_socket to handle SelectionNotify events. | |
606140dd KH |
1830 | If it's the selection we are waiting for, stop waiting |
1831 | by setting the car of reading_selection_reply to non-nil. | |
1832 | We store t there if the reply is successful, lambda if not. */ | |
ede4db72 RS |
1833 | |
1834 | void | |
1835 | x_handle_selection_notify (event) | |
1836 | XSelectionEvent *event; | |
1837 | { | |
5d0ba25b | 1838 | if (event->requestor != reading_selection_window) |
ede4db72 RS |
1839 | return; |
1840 | if (event->selection != reading_which_selection) | |
1841 | return; | |
1842 | ||
606140dd KH |
1843 | XCONS (reading_selection_reply)->car |
1844 | = (event->property != 0 ? Qt : Qlambda); | |
ede4db72 RS |
1845 | } |
1846 | ||
1847 | \f | |
a0d76c27 EN |
1848 | DEFUN ("x-own-selection-internal", Fx_own_selection_internal, |
1849 | Sx_own_selection_internal, 2, 2, 0, | |
ede4db72 RS |
1850 | "Assert an X selection of the given TYPE with the given VALUE.\n\ |
1851 | TYPE is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1852 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1853 | VALUE is typically a string, or a cons of two markers, but may be\n\ | |
a87ed99c | 1854 | anything that the functions on `selection-converter-alist' know about.") |
ede4db72 RS |
1855 | (selection_name, selection_value) |
1856 | Lisp_Object selection_name, selection_value; | |
1857 | { | |
703e0710 | 1858 | check_x (); |
ede4db72 | 1859 | CHECK_SYMBOL (selection_name, 0); |
606140dd | 1860 | if (NILP (selection_value)) error ("selection-value may not be nil"); |
ede4db72 RS |
1861 | x_own_selection (selection_name, selection_value); |
1862 | return selection_value; | |
1863 | } | |
1864 | ||
1865 | ||
1866 | /* Request the selection value from the owner. If we are the owner, | |
1867 | simply return our selection value. If we are not the owner, this | |
1868 | will block until all of the data has arrived. */ | |
1869 | ||
a0d76c27 EN |
1870 | DEFUN ("x-get-selection-internal", Fx_get_selection_internal, |
1871 | Sx_get_selection_internal, 2, 2, 0, | |
ede4db72 RS |
1872 | "Return text selected from some X window.\n\ |
1873 | SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1874 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
a87ed99c | 1875 | TYPE is the type of data desired, typically `STRING'.") |
ede4db72 RS |
1876 | (selection_symbol, target_type) |
1877 | Lisp_Object selection_symbol, target_type; | |
1878 | { | |
1879 | Lisp_Object val = Qnil; | |
1880 | struct gcpro gcpro1, gcpro2; | |
1881 | GCPRO2 (target_type, val); /* we store newly consed data into these */ | |
703e0710 | 1882 | check_x (); |
ede4db72 RS |
1883 | CHECK_SYMBOL (selection_symbol, 0); |
1884 | ||
1885 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1886 | if (CONSP (target_type) | |
1887 | && XCONS (target_type)->car == QMULTIPLE) | |
1888 | { | |
1889 | CHECK_VECTOR (XCONS (target_type)->cdr, 0); | |
1890 | /* So we don't destructively modify this... */ | |
1891 | target_type = copy_multiple_data (target_type); | |
1892 | } | |
1893 | else | |
1894 | #endif | |
1895 | CHECK_SYMBOL (target_type, 0); | |
1896 | ||
1897 | val = x_get_local_selection (selection_symbol, target_type); | |
1898 | ||
1899 | if (NILP (val)) | |
1900 | { | |
1901 | val = x_get_foreign_selection (selection_symbol, target_type); | |
1902 | goto DONE; | |
1903 | } | |
1904 | ||
1905 | if (CONSP (val) | |
1906 | && SYMBOLP (XCONS (val)->car)) | |
1907 | { | |
1908 | val = XCONS (val)->cdr; | |
1909 | if (CONSP (val) && NILP (XCONS (val)->cdr)) | |
1910 | val = XCONS (val)->car; | |
1911 | } | |
1912 | val = clean_local_selection_data (val); | |
1913 | DONE: | |
1914 | UNGCPRO; | |
1915 | return val; | |
1916 | } | |
1917 | ||
a0d76c27 EN |
1918 | DEFUN ("x-disown-selection-internal", Fx_disown_selection_internal, |
1919 | Sx_disown_selection_internal, 1, 2, 0, | |
a87ed99c RS |
1920 | "If we own the selection SELECTION, disown it.\n\ |
1921 | Disowning it means there is no such selection.") | |
ede4db72 RS |
1922 | (selection, time) |
1923 | Lisp_Object selection; | |
1924 | Lisp_Object time; | |
1925 | { | |
ede4db72 RS |
1926 | Time timestamp; |
1927 | Atom selection_atom; | |
44d46531 | 1928 | struct selection_input_event event; |
3834c318 | 1929 | Display *display; |
5c3a351a | 1930 | struct x_display_info *dpyinfo; |
ede4db72 | 1931 | |
703e0710 | 1932 | check_x (); |
3834c318 | 1933 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1934 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
ede4db72 RS |
1935 | CHECK_SYMBOL (selection, 0); |
1936 | if (NILP (time)) | |
7da64e5c | 1937 | timestamp = last_event_timestamp; |
ede4db72 RS |
1938 | else |
1939 | timestamp = cons_to_long (time); | |
1940 | ||
1941 | if (NILP (assq_no_quit (selection, Vselection_alist))) | |
1942 | return Qnil; /* Don't disown the selection when we're not the owner. */ | |
1943 | ||
5c3a351a | 1944 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection); |
ede4db72 RS |
1945 | |
1946 | BLOCK_INPUT; | |
1947 | XSetSelectionOwner (display, selection_atom, None, timestamp); | |
1948 | UNBLOCK_INPUT; | |
1949 | ||
eb8c3be9 | 1950 | /* It doesn't seem to be guaranteed that a SelectionClear event will be |
ede4db72 RS |
1951 | generated for a window which owns the selection when that window sets |
1952 | the selection owner to None. The NCD server does, the MIT Sun4 server | |
1953 | doesn't. So we synthesize one; this means we might get two, but | |
1954 | that's ok, because the second one won't have any effect. */ | |
8d47f8c4 RS |
1955 | SELECTION_EVENT_DISPLAY (&event) = display; |
1956 | SELECTION_EVENT_SELECTION (&event) = selection_atom; | |
1957 | SELECTION_EVENT_TIME (&event) = timestamp; | |
44d46531 | 1958 | x_handle_selection_clear ((struct input_event *) &event); |
ede4db72 RS |
1959 | |
1960 | return Qt; | |
1961 | } | |
1962 | ||
a87ed99c RS |
1963 | /* Get rid of all the selections in buffer BUFFER. |
1964 | This is used when we kill a buffer. */ | |
1965 | ||
1966 | void | |
1967 | x_disown_buffer_selections (buffer) | |
1968 | Lisp_Object buffer; | |
1969 | { | |
1970 | Lisp_Object tail; | |
1971 | struct buffer *buf = XBUFFER (buffer); | |
1972 | ||
1973 | for (tail = Vselection_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1974 | { | |
1975 | Lisp_Object elt, value; | |
1976 | elt = XCONS (tail)->car; | |
1977 | value = XCONS (elt)->cdr; | |
1978 | if (CONSP (value) && MARKERP (XCONS (value)->car) | |
1979 | && XMARKER (XCONS (value)->car)->buffer == buf) | |
1980 | Fx_disown_selection_internal (XCONS (elt)->car, Qnil); | |
1981 | } | |
1982 | } | |
ede4db72 RS |
1983 | |
1984 | DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p, | |
1985 | 0, 1, 0, | |
a87ed99c | 1986 | "Whether the current Emacs process owns the given X Selection.\n\ |
ede4db72 RS |
1987 | The arg should be the name of the selection in question, typically one of\n\ |
1988 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1989 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1990 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
1991 | and t is the same as `SECONDARY'.)") | |
1992 | (selection) | |
1993 | Lisp_Object selection; | |
1994 | { | |
703e0710 | 1995 | check_x (); |
ede4db72 RS |
1996 | CHECK_SYMBOL (selection, 0); |
1997 | if (EQ (selection, Qnil)) selection = QPRIMARY; | |
1998 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
1999 | ||
2000 | if (NILP (Fassq (selection, Vselection_alist))) | |
2001 | return Qnil; | |
2002 | return Qt; | |
2003 | } | |
2004 | ||
2005 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
2006 | 0, 1, 0, | |
2007 | "Whether there is an owner for the given X Selection.\n\ | |
2008 | The arg should be the name of the selection in question, typically one of\n\ | |
2009 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
2010 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
2011 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
2012 | and t is the same as `SECONDARY'.)") | |
2013 | (selection) | |
2014 | Lisp_Object selection; | |
2015 | { | |
2016 | Window owner; | |
356ba514 | 2017 | Atom atom; |
3834c318 RS |
2018 | Display *dpy; |
2019 | ||
b8c70430 | 2020 | /* It should be safe to call this before we have an X frame. */ |
c6423dc1 | 2021 | if (! FRAME_X_P (selected_frame)) |
b8c70430 RS |
2022 | return Qnil; |
2023 | ||
3834c318 | 2024 | dpy = FRAME_X_DISPLAY (selected_frame); |
ede4db72 RS |
2025 | CHECK_SYMBOL (selection, 0); |
2026 | if (!NILP (Fx_selection_owner_p (selection))) | |
2027 | return Qt; | |
356ba514 RS |
2028 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
2029 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
5c3a351a RS |
2030 | atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
2031 | dpy, selection); | |
356ba514 RS |
2032 | if (atom == 0) |
2033 | return Qnil; | |
ede4db72 | 2034 | BLOCK_INPUT; |
356ba514 | 2035 | owner = XGetSelectionOwner (dpy, atom); |
ede4db72 RS |
2036 | UNBLOCK_INPUT; |
2037 | return (owner ? Qt : Qnil); | |
2038 | } | |
2039 | ||
2040 | \f | |
2041 | #ifdef CUT_BUFFER_SUPPORT | |
2042 | ||
ede4db72 RS |
2043 | /* Ensure that all 8 cut buffers exist. ICCCM says we gotta... */ |
2044 | static void | |
2045 | initialize_cut_buffers (display, window) | |
2046 | Display *display; | |
2047 | Window window; | |
2048 | { | |
2049 | unsigned char *data = (unsigned char *) ""; | |
2050 | BLOCK_INPUT; | |
2051 | #define FROB(atom) XChangeProperty (display, window, atom, XA_STRING, 8, \ | |
2052 | PropModeAppend, data, 0) | |
2053 | FROB (XA_CUT_BUFFER0); | |
2054 | FROB (XA_CUT_BUFFER1); | |
2055 | FROB (XA_CUT_BUFFER2); | |
2056 | FROB (XA_CUT_BUFFER3); | |
2057 | FROB (XA_CUT_BUFFER4); | |
2058 | FROB (XA_CUT_BUFFER5); | |
2059 | FROB (XA_CUT_BUFFER6); | |
2060 | FROB (XA_CUT_BUFFER7); | |
2061 | #undef FROB | |
2062 | UNBLOCK_INPUT; | |
ede4db72 RS |
2063 | } |
2064 | ||
2065 | ||
a87ed99c | 2066 | #define CHECK_CUT_BUFFER(symbol,n) \ |
ede4db72 RS |
2067 | { CHECK_SYMBOL ((symbol), (n)); \ |
2068 | if (!EQ((symbol), QCUT_BUFFER0) && !EQ((symbol), QCUT_BUFFER1) \ | |
2069 | && !EQ((symbol), QCUT_BUFFER2) && !EQ((symbol), QCUT_BUFFER3) \ | |
2070 | && !EQ((symbol), QCUT_BUFFER4) && !EQ((symbol), QCUT_BUFFER5) \ | |
2071 | && !EQ((symbol), QCUT_BUFFER6) && !EQ((symbol), QCUT_BUFFER7)) \ | |
2072 | Fsignal (Qerror, \ | |
a87ed99c | 2073 | Fcons (build_string ("doesn't name a cut buffer"), \ |
ede4db72 RS |
2074 | Fcons ((symbol), Qnil))); \ |
2075 | } | |
2076 | ||
a87ed99c RS |
2077 | DEFUN ("x-get-cut-buffer-internal", Fx_get_cut_buffer_internal, |
2078 | Sx_get_cut_buffer_internal, 1, 1, 0, | |
2079 | "Returns the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
2080 | (buffer) |
2081 | Lisp_Object buffer; | |
2082 | { | |
3834c318 | 2083 | Window window; |
ede4db72 RS |
2084 | Atom buffer_atom; |
2085 | unsigned char *data; | |
2086 | int bytes; | |
2087 | Atom type; | |
2088 | int format; | |
2089 | unsigned long size; | |
2090 | Lisp_Object ret; | |
3834c318 | 2091 | Display *display; |
5c3a351a | 2092 | struct x_display_info *dpyinfo; |
ede4db72 | 2093 | |
703e0710 | 2094 | check_x (); |
3834c318 | 2095 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 2096 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
3834c318 | 2097 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ |
a87ed99c | 2098 | CHECK_CUT_BUFFER (buffer, 0); |
5c3a351a | 2099 | buffer_atom = symbol_to_x_atom (dpyinfo, display, buffer); |
ede4db72 RS |
2100 | |
2101 | x_get_window_property (display, window, buffer_atom, &data, &bytes, | |
2102 | &type, &format, &size, 0); | |
22e00739 RS |
2103 | if (!data || !format) |
2104 | return Qnil; | |
ede4db72 RS |
2105 | |
2106 | if (format != 8 || type != XA_STRING) | |
2107 | Fsignal (Qerror, | |
2108 | Fcons (build_string ("cut buffer doesn't contain 8-bit data"), | |
5c3a351a | 2109 | Fcons (x_atom_to_symbol (dpyinfo, display, type), |
ede4db72 RS |
2110 | Fcons (make_number (format), Qnil)))); |
2111 | ||
2112 | ret = (bytes ? make_string ((char *) data, bytes) : Qnil); | |
4feb31b2 | 2113 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 2114 | calls xmalloc itself. */ |
4feb31b2 | 2115 | xfree (data); |
ede4db72 RS |
2116 | return ret; |
2117 | } | |
2118 | ||
2119 | ||
a87ed99c RS |
2120 | DEFUN ("x-store-cut-buffer-internal", Fx_store_cut_buffer_internal, |
2121 | Sx_store_cut_buffer_internal, 2, 2, 0, | |
2122 | "Sets the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
2123 | (buffer, string) |
2124 | Lisp_Object buffer, string; | |
2125 | { | |
3834c318 | 2126 | Window window; |
ede4db72 RS |
2127 | Atom buffer_atom; |
2128 | unsigned char *data; | |
2129 | int bytes; | |
2130 | int bytes_remaining; | |
3834c318 RS |
2131 | int max_bytes; |
2132 | Display *display; | |
ede4db72 | 2133 | |
703e0710 | 2134 | check_x (); |
3834c318 RS |
2135 | display = FRAME_X_DISPLAY (selected_frame); |
2136 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
2137 | ||
2138 | max_bytes = SELECTION_QUANTUM (display); | |
2139 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
2140 | max_bytes = MAX_SELECTION_QUANTUM; | |
2141 | ||
a87ed99c | 2142 | CHECK_CUT_BUFFER (buffer, 0); |
ede4db72 | 2143 | CHECK_STRING (string, 0); |
5c3a351a RS |
2144 | buffer_atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
2145 | display, buffer); | |
ede4db72 | 2146 | data = (unsigned char *) XSTRING (string)->data; |
fc932ac6 | 2147 | bytes = STRING_BYTES (XSTRING (string)); |
ede4db72 RS |
2148 | bytes_remaining = bytes; |
2149 | ||
04649dbc KH |
2150 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
2151 | { | |
2152 | initialize_cut_buffers (display, window); | |
2153 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; | |
2154 | } | |
ede4db72 RS |
2155 | |
2156 | BLOCK_INPUT; | |
10608c8c RS |
2157 | |
2158 | /* Don't mess up with an empty value. */ | |
2159 | if (!bytes_remaining) | |
2160 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2161 | PropModeReplace, data, 0); | |
2162 | ||
ede4db72 RS |
2163 | while (bytes_remaining) |
2164 | { | |
2165 | int chunk = (bytes_remaining < max_bytes | |
2166 | ? bytes_remaining : max_bytes); | |
2167 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2168 | (bytes_remaining == bytes | |
2169 | ? PropModeReplace | |
2170 | : PropModeAppend), | |
2171 | data, chunk); | |
2172 | data += chunk; | |
2173 | bytes_remaining -= chunk; | |
2174 | } | |
2175 | UNBLOCK_INPUT; | |
2176 | return string; | |
2177 | } | |
2178 | ||
2179 | ||
a87ed99c RS |
2180 | DEFUN ("x-rotate-cut-buffers-internal", Fx_rotate_cut_buffers_internal, |
2181 | Sx_rotate_cut_buffers_internal, 1, 1, 0, | |
88623f1c RS |
2182 | "Rotate the values of the cut buffers by the given number of step.\n\ |
2183 | Positive means shift the values forward, negative means backward.") | |
ede4db72 RS |
2184 | (n) |
2185 | Lisp_Object n; | |
2186 | { | |
3834c318 RS |
2187 | Window window; |
2188 | Atom props[8]; | |
2189 | Display *display; | |
ede4db72 | 2190 | |
703e0710 | 2191 | check_x (); |
3834c318 RS |
2192 | display = FRAME_X_DISPLAY (selected_frame); |
2193 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
7da64e5c | 2194 | CHECK_NUMBER (n, 0); |
3834c318 RS |
2195 | if (XINT (n) == 0) |
2196 | return n; | |
04649dbc KH |
2197 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
2198 | { | |
2199 | initialize_cut_buffers (display, window); | |
2200 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; | |
2201 | } | |
3834c318 | 2202 | |
ede4db72 RS |
2203 | props[0] = XA_CUT_BUFFER0; |
2204 | props[1] = XA_CUT_BUFFER1; | |
2205 | props[2] = XA_CUT_BUFFER2; | |
2206 | props[3] = XA_CUT_BUFFER3; | |
2207 | props[4] = XA_CUT_BUFFER4; | |
2208 | props[5] = XA_CUT_BUFFER5; | |
2209 | props[6] = XA_CUT_BUFFER6; | |
2210 | props[7] = XA_CUT_BUFFER7; | |
2211 | BLOCK_INPUT; | |
2212 | XRotateWindowProperties (display, window, props, 8, XINT (n)); | |
2213 | UNBLOCK_INPUT; | |
2214 | return n; | |
2215 | } | |
2216 | ||
2217 | #endif | |
2218 | \f | |
ede4db72 RS |
2219 | void |
2220 | syms_of_xselect () | |
2221 | { | |
ede4db72 RS |
2222 | defsubr (&Sx_get_selection_internal); |
2223 | defsubr (&Sx_own_selection_internal); | |
2224 | defsubr (&Sx_disown_selection_internal); | |
2225 | defsubr (&Sx_selection_owner_p); | |
2226 | defsubr (&Sx_selection_exists_p); | |
2227 | ||
2228 | #ifdef CUT_BUFFER_SUPPORT | |
a87ed99c RS |
2229 | defsubr (&Sx_get_cut_buffer_internal); |
2230 | defsubr (&Sx_store_cut_buffer_internal); | |
2231 | defsubr (&Sx_rotate_cut_buffers_internal); | |
ede4db72 RS |
2232 | #endif |
2233 | ||
2234 | reading_selection_reply = Fcons (Qnil, Qnil); | |
2235 | staticpro (&reading_selection_reply); | |
2236 | reading_selection_window = 0; | |
2237 | reading_which_selection = 0; | |
2238 | ||
2239 | property_change_wait_list = 0; | |
2f65feb6 | 2240 | prop_location_identifier = 0; |
ede4db72 RS |
2241 | property_change_reply = Fcons (Qnil, Qnil); |
2242 | staticpro (&property_change_reply); | |
2243 | ||
2244 | Vselection_alist = Qnil; | |
2245 | staticpro (&Vselection_alist); | |
2246 | ||
2247 | DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist, | |
4cf066bb | 2248 | "An alist associating X Windows selection-types with functions.\n\ |
ede4db72 RS |
2249 | These functions are called to convert the selection, with three args:\n\ |
2250 | the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2251 | a desired type to which the selection should be converted;\n\ | |
2252 | and the local selection value (whatever was given to `x-own-selection').\n\ | |
2253 | \n\ | |
2254 | The function should return the value to send to the X server\n\ | |
2255 | \(typically a string). A return value of nil\n\ | |
2256 | means that the conversion could not be done.\n\ | |
2257 | A return value which is the symbol `NULL'\n\ | |
2258 | means that a side-effect was executed,\n\ | |
2259 | and there is no meaningful selection value."); | |
2260 | Vselection_converter_alist = Qnil; | |
2261 | ||
2262 | DEFVAR_LISP ("x-lost-selection-hooks", &Vx_lost_selection_hooks, | |
4cf066bb | 2263 | "A list of functions to be called when Emacs loses an X selection.\n\ |
ede4db72 RS |
2264 | \(This happens when some other X client makes its own selection\n\ |
2265 | or when a Lisp program explicitly clears the selection.)\n\ | |
2266 | The functions are called with one argument, the selection type\n\ | |
d31b6237 | 2267 | \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD')."); |
ede4db72 RS |
2268 | Vx_lost_selection_hooks = Qnil; |
2269 | ||
2270 | DEFVAR_LISP ("x-sent-selection-hooks", &Vx_sent_selection_hooks, | |
4cf066bb | 2271 | "A list of functions to be called when Emacs answers a selection request.\n\ |
ede4db72 RS |
2272 | The functions are called with four arguments:\n\ |
2273 | - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2274 | - the selection-type which Emacs was asked to convert the\n\ | |
2275 | selection into before sending (for example, `STRING' or `LENGTH');\n\ | |
2276 | - a flag indicating success or failure for responding to the request.\n\ | |
2277 | We might have failed (and declined the request) for any number of reasons,\n\ | |
2278 | including being asked for a selection that we no longer own, or being asked\n\ | |
2279 | to convert into a type that we don't know about or that is inappropriate.\n\ | |
2280 | This hook doesn't let you change the behavior of Emacs's selection replies,\n\ | |
2281 | it merely informs you that they have happened."); | |
2282 | Vx_sent_selection_hooks = Qnil; | |
2283 | ||
93e4ce1b | 2284 | DEFVAR_LISP ("selection-coding-system", &Vselection_coding_system, |
4cf066bb RS |
2285 | "Coding system for communicating with other X clients.\n\ |
2286 | When sending or receiving text via cut_buffer, selection, and clipboard,\n\ | |
2287 | the text is encoded or decoded by this coding system.\n\ | |
9391d06a | 2288 | A default value is `compound-text'"); |
93e4ce1b | 2289 | Vselection_coding_system = intern ("compound-text"); |
2584c9ec | 2290 | |
ede4db72 | 2291 | DEFVAR_INT ("x-selection-timeout", &x_selection_timeout, |
4cf066bb | 2292 | "Number of milliseconds to wait for a selection reply.\n\ |
2a1a4c9d | 2293 | If the selection owner doesn't reply in this time, we give up.\n\ |
ede4db72 | 2294 | A value of 0 means wait as long as necessary. This is initialized from the\n\ |
80da0190 | 2295 | \"*selectionTimeout\" resource."); |
ede4db72 RS |
2296 | x_selection_timeout = 0; |
2297 | ||
2298 | QPRIMARY = intern ("PRIMARY"); staticpro (&QPRIMARY); | |
2299 | QSECONDARY = intern ("SECONDARY"); staticpro (&QSECONDARY); | |
2300 | QSTRING = intern ("STRING"); staticpro (&QSTRING); | |
2301 | QINTEGER = intern ("INTEGER"); staticpro (&QINTEGER); | |
2302 | QCLIPBOARD = intern ("CLIPBOARD"); staticpro (&QCLIPBOARD); | |
2303 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2304 | QTEXT = intern ("TEXT"); staticpro (&QTEXT); | |
e6c7c988 | 2305 | QCOMPOUND_TEXT = intern ("COMPOUND_TEXT"); staticpro (&QCOMPOUND_TEXT); |
ede4db72 RS |
2306 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); |
2307 | QDELETE = intern ("DELETE"); staticpro (&QDELETE); | |
2308 | QMULTIPLE = intern ("MULTIPLE"); staticpro (&QMULTIPLE); | |
2309 | QINCR = intern ("INCR"); staticpro (&QINCR); | |
2310 | QEMACS_TMP = intern ("_EMACS_TMP_"); staticpro (&QEMACS_TMP); | |
2311 | QTARGETS = intern ("TARGETS"); staticpro (&QTARGETS); | |
2312 | QATOM = intern ("ATOM"); staticpro (&QATOM); | |
2313 | QATOM_PAIR = intern ("ATOM_PAIR"); staticpro (&QATOM_PAIR); | |
2314 | QNULL = intern ("NULL"); staticpro (&QNULL); | |
2315 | ||
2316 | #ifdef CUT_BUFFER_SUPPORT | |
2317 | QCUT_BUFFER0 = intern ("CUT_BUFFER0"); staticpro (&QCUT_BUFFER0); | |
2318 | QCUT_BUFFER1 = intern ("CUT_BUFFER1"); staticpro (&QCUT_BUFFER1); | |
2319 | QCUT_BUFFER2 = intern ("CUT_BUFFER2"); staticpro (&QCUT_BUFFER2); | |
2320 | QCUT_BUFFER3 = intern ("CUT_BUFFER3"); staticpro (&QCUT_BUFFER3); | |
2321 | QCUT_BUFFER4 = intern ("CUT_BUFFER4"); staticpro (&QCUT_BUFFER4); | |
2322 | QCUT_BUFFER5 = intern ("CUT_BUFFER5"); staticpro (&QCUT_BUFFER5); | |
2323 | QCUT_BUFFER6 = intern ("CUT_BUFFER6"); staticpro (&QCUT_BUFFER6); | |
2324 | QCUT_BUFFER7 = intern ("CUT_BUFFER7"); staticpro (&QCUT_BUFFER7); | |
2325 | #endif | |
2326 | ||
2327 | } |