Commit | Line | Data |
---|---|---|
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 | 53 | |
16cd5029 KH |
54 | /* Coding system for the next communicating with other X clients. */ |
55 | static Lisp_Object Vnext_selection_coding_system; | |
56 | ||
ede4db72 RS |
57 | /* If this is a smaller number than the max-request-size of the display, |
58 | emacs will use INCR selection transfer when the selection is larger | |
59 | than this. The max-request-size is usually around 64k, so if you want | |
60 | emacs to use incremental selection transfers when the selection is | |
61 | smaller than that, set this. I added this mostly for debugging the | |
8f4f023f | 62 | incremental transfer stuff, but it might improve server performance. */ |
ede4db72 RS |
63 | #define MAX_SELECTION_QUANTUM 0xFFFFFF |
64 | ||
c3498e64 JB |
65 | #ifdef HAVE_X11R4 |
66 | #define SELECTION_QUANTUM(dpy) ((XMaxRequestSize(dpy) << 2) - 100) | |
67 | #else | |
68 | #define SELECTION_QUANTUM(dpy) (((dpy)->max_request_size << 2) - 100) | |
69 | #endif | |
ede4db72 | 70 | |
7da64e5c | 71 | /* The timestamp of the last input event Emacs received from the X server. */ |
29674445 KH |
72 | /* Defined in keyboard.c. */ |
73 | extern unsigned long last_event_timestamp; | |
ede4db72 RS |
74 | |
75 | /* This is an association list whose elements are of the form | |
118bd841 RS |
76 | ( SELECTION-NAME SELECTION-VALUE SELECTION-TIMESTAMP FRAME) |
77 | SELECTION-NAME is a lisp symbol, whose name is the name of an X Atom. | |
78 | SELECTION-VALUE is the value that emacs owns for that selection. | |
ede4db72 | 79 | It may be any kind of Lisp object. |
118bd841 | 80 | SELECTION-TIMESTAMP is the time at which emacs began owning this selection, |
ede4db72 | 81 | as a cons of two 16-bit numbers (making a 32 bit time.) |
118bd841 RS |
82 | FRAME is the frame for which we made the selection. |
83 | If there is an entry in this alist, then it can be assumed that Emacs owns | |
ede4db72 RS |
84 | that selection. |
85 | The only (eq) parts of this list that are visible from Lisp are the | |
8f4f023f RS |
86 | selection-values. */ |
87 | static Lisp_Object Vselection_alist; | |
ede4db72 RS |
88 | |
89 | /* This is an alist whose CARs are selection-types (whose names are the same | |
90 | as the names of X Atoms) and whose CDRs are the names of Lisp functions to | |
91 | call to convert the given Emacs selection value to a string representing | |
92 | the given selection type. This is for Lisp-level extension of the emacs | |
8f4f023f RS |
93 | selection handling. */ |
94 | static Lisp_Object Vselection_converter_alist; | |
ede4db72 RS |
95 | |
96 | /* If the selection owner takes too long to reply to a selection request, | |
8f4f023f RS |
97 | we give up on it. This is in milliseconds (0 = no timeout.) */ |
98 | static int x_selection_timeout; | |
ede4db72 RS |
99 | \f |
100 | /* Utility functions */ | |
101 | ||
102 | static void lisp_data_to_selection_data (); | |
103 | static Lisp_Object selection_data_to_lisp_data (); | |
104 | static Lisp_Object x_get_window_property_as_lisp_data (); | |
105 | ||
ede4db72 RS |
106 | /* This converts a Lisp symbol to a server Atom, avoiding a server |
107 | roundtrip whenever possible. */ | |
108 | ||
109 | static Atom | |
5c3a351a RS |
110 | symbol_to_x_atom (dpyinfo, display, sym) |
111 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
112 | Display *display; |
113 | Lisp_Object sym; | |
114 | { | |
115 | Atom val; | |
116 | if (NILP (sym)) return 0; | |
117 | if (EQ (sym, QPRIMARY)) return XA_PRIMARY; | |
118 | if (EQ (sym, QSECONDARY)) return XA_SECONDARY; | |
119 | if (EQ (sym, QSTRING)) return XA_STRING; | |
120 | if (EQ (sym, QINTEGER)) return XA_INTEGER; | |
121 | if (EQ (sym, QATOM)) return XA_ATOM; | |
5c3a351a RS |
122 | if (EQ (sym, QCLIPBOARD)) return dpyinfo->Xatom_CLIPBOARD; |
123 | if (EQ (sym, QTIMESTAMP)) return dpyinfo->Xatom_TIMESTAMP; | |
124 | if (EQ (sym, QTEXT)) return dpyinfo->Xatom_TEXT; | |
e6c7c988 | 125 | if (EQ (sym, QCOMPOUND_TEXT)) return dpyinfo->Xatom_COMPOUND_TEXT; |
5c3a351a RS |
126 | if (EQ (sym, QDELETE)) return dpyinfo->Xatom_DELETE; |
127 | if (EQ (sym, QMULTIPLE)) return dpyinfo->Xatom_MULTIPLE; | |
128 | if (EQ (sym, QINCR)) return dpyinfo->Xatom_INCR; | |
129 | if (EQ (sym, QEMACS_TMP)) return dpyinfo->Xatom_EMACS_TMP; | |
130 | if (EQ (sym, QTARGETS)) return dpyinfo->Xatom_TARGETS; | |
131 | if (EQ (sym, QNULL)) return dpyinfo->Xatom_NULL; | |
ede4db72 RS |
132 | #ifdef CUT_BUFFER_SUPPORT |
133 | if (EQ (sym, QCUT_BUFFER0)) return XA_CUT_BUFFER0; | |
134 | if (EQ (sym, QCUT_BUFFER1)) return XA_CUT_BUFFER1; | |
135 | if (EQ (sym, QCUT_BUFFER2)) return XA_CUT_BUFFER2; | |
136 | if (EQ (sym, QCUT_BUFFER3)) return XA_CUT_BUFFER3; | |
137 | if (EQ (sym, QCUT_BUFFER4)) return XA_CUT_BUFFER4; | |
138 | if (EQ (sym, QCUT_BUFFER5)) return XA_CUT_BUFFER5; | |
139 | if (EQ (sym, QCUT_BUFFER6)) return XA_CUT_BUFFER6; | |
140 | if (EQ (sym, QCUT_BUFFER7)) return XA_CUT_BUFFER7; | |
141 | #endif | |
142 | if (!SYMBOLP (sym)) abort (); | |
143 | ||
144 | #if 0 | |
145 | fprintf (stderr, " XInternAtom %s\n", (char *) XSYMBOL (sym)->name->data); | |
146 | #endif | |
147 | BLOCK_INPUT; | |
148 | val = XInternAtom (display, (char *) XSYMBOL (sym)->name->data, False); | |
149 | UNBLOCK_INPUT; | |
150 | return val; | |
151 | } | |
152 | ||
153 | ||
154 | /* This converts a server Atom to a Lisp symbol, avoiding server roundtrips | |
155 | and calls to intern whenever possible. */ | |
156 | ||
157 | static Lisp_Object | |
5c3a351a RS |
158 | x_atom_to_symbol (dpyinfo, display, atom) |
159 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
160 | Display *display; |
161 | Atom atom; | |
162 | { | |
163 | char *str; | |
164 | Lisp_Object val; | |
165 | if (! atom) return Qnil; | |
7da64e5c RS |
166 | switch (atom) |
167 | { | |
168 | case XA_PRIMARY: | |
169 | return QPRIMARY; | |
170 | case XA_SECONDARY: | |
171 | return QSECONDARY; | |
172 | case XA_STRING: | |
173 | return QSTRING; | |
174 | case XA_INTEGER: | |
175 | return QINTEGER; | |
176 | case XA_ATOM: | |
177 | return QATOM; | |
ede4db72 | 178 | #ifdef CUT_BUFFER_SUPPORT |
7da64e5c RS |
179 | case XA_CUT_BUFFER0: |
180 | return QCUT_BUFFER0; | |
181 | case XA_CUT_BUFFER1: | |
182 | return QCUT_BUFFER1; | |
183 | case XA_CUT_BUFFER2: | |
184 | return QCUT_BUFFER2; | |
185 | case XA_CUT_BUFFER3: | |
186 | return QCUT_BUFFER3; | |
187 | case XA_CUT_BUFFER4: | |
188 | return QCUT_BUFFER4; | |
189 | case XA_CUT_BUFFER5: | |
190 | return QCUT_BUFFER5; | |
191 | case XA_CUT_BUFFER6: | |
192 | return QCUT_BUFFER6; | |
193 | case XA_CUT_BUFFER7: | |
194 | return QCUT_BUFFER7; | |
ede4db72 | 195 | #endif |
7da64e5c RS |
196 | } |
197 | ||
5c3a351a | 198 | if (atom == dpyinfo->Xatom_CLIPBOARD) |
7da64e5c | 199 | return QCLIPBOARD; |
5c3a351a | 200 | if (atom == dpyinfo->Xatom_TIMESTAMP) |
7da64e5c | 201 | return QTIMESTAMP; |
5c3a351a | 202 | if (atom == dpyinfo->Xatom_TEXT) |
7da64e5c | 203 | return QTEXT; |
e6c7c988 KH |
204 | if (atom == dpyinfo->Xatom_COMPOUND_TEXT) |
205 | return QCOMPOUND_TEXT; | |
5c3a351a | 206 | if (atom == dpyinfo->Xatom_DELETE) |
7da64e5c | 207 | return QDELETE; |
5c3a351a | 208 | if (atom == dpyinfo->Xatom_MULTIPLE) |
7da64e5c | 209 | return QMULTIPLE; |
5c3a351a | 210 | if (atom == dpyinfo->Xatom_INCR) |
7da64e5c | 211 | return QINCR; |
5c3a351a | 212 | if (atom == dpyinfo->Xatom_EMACS_TMP) |
7da64e5c | 213 | return QEMACS_TMP; |
5c3a351a | 214 | if (atom == dpyinfo->Xatom_TARGETS) |
7da64e5c | 215 | return QTARGETS; |
5c3a351a | 216 | if (atom == dpyinfo->Xatom_NULL) |
7da64e5c | 217 | return QNULL; |
ede4db72 RS |
218 | |
219 | BLOCK_INPUT; | |
220 | str = XGetAtomName (display, atom); | |
221 | UNBLOCK_INPUT; | |
222 | #if 0 | |
223 | fprintf (stderr, " XGetAtomName --> %s\n", str); | |
224 | #endif | |
225 | if (! str) return Qnil; | |
226 | val = intern (str); | |
227 | BLOCK_INPUT; | |
0158abbc | 228 | /* This was allocated by Xlib, so use XFree. */ |
ede4db72 RS |
229 | XFree (str); |
230 | UNBLOCK_INPUT; | |
231 | return val; | |
232 | } | |
8a89415e | 233 | \f |
ede4db72 RS |
234 | /* Do protocol to assert ourself as a selection owner. |
235 | Update the Vselection_alist so that we can reply to later requests for | |
236 | our selection. */ | |
237 | ||
238 | static void | |
239 | x_own_selection (selection_name, selection_value) | |
240 | Lisp_Object selection_name, selection_value; | |
241 | { | |
378c33ca GM |
242 | struct frame *sf = SELECTED_FRAME (); |
243 | Window selecting_window = FRAME_X_WINDOW (sf); | |
244 | Display *display = FRAME_X_DISPLAY (sf); | |
7da64e5c | 245 | Time time = last_event_timestamp; |
ede4db72 | 246 | Atom selection_atom; |
378c33ca | 247 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (sf); |
5a499696 | 248 | int count; |
ede4db72 RS |
249 | |
250 | CHECK_SYMBOL (selection_name, 0); | |
5c3a351a | 251 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection_name); |
ede4db72 RS |
252 | |
253 | BLOCK_INPUT; | |
5a499696 | 254 | count = x_catch_errors (display); |
ede4db72 | 255 | XSetSelectionOwner (display, selection_atom, selecting_window, time); |
a7b24d46 | 256 | x_check_errors (display, "Can't set selection: %s"); |
5a499696 | 257 | x_uncatch_errors (display, count); |
ede4db72 RS |
258 | UNBLOCK_INPUT; |
259 | ||
260 | /* Now update the local cache */ | |
261 | { | |
262 | Lisp_Object selection_time; | |
263 | Lisp_Object selection_data; | |
264 | Lisp_Object prev_value; | |
265 | ||
266 | selection_time = long_to_cons ((unsigned long) time); | |
267 | selection_data = Fcons (selection_name, | |
268 | Fcons (selection_value, | |
118bd841 | 269 | Fcons (selection_time, |
378c33ca | 270 | Fcons (selected_frame, Qnil)))); |
ede4db72 RS |
271 | prev_value = assq_no_quit (selection_name, Vselection_alist); |
272 | ||
273 | Vselection_alist = Fcons (selection_data, Vselection_alist); | |
274 | ||
275 | /* If we already owned the selection, remove the old selection data. | |
276 | Perhaps we should destructively modify it instead. | |
277 | Don't use Fdelq as that may QUIT. */ | |
278 | if (!NILP (prev_value)) | |
279 | { | |
280 | Lisp_Object rest; /* we know it's not the CAR, so it's easy. */ | |
281 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
8e713be6 | 282 | if (EQ (prev_value, Fcar (XCDR (rest)))) |
ede4db72 | 283 | { |
8e713be6 | 284 | XCDR (rest) = Fcdr (XCDR (rest)); |
ede4db72 RS |
285 | break; |
286 | } | |
287 | } | |
288 | } | |
289 | } | |
290 | \f | |
291 | /* Given a selection-name and desired type, look up our local copy of | |
292 | the selection value and convert it to the type. | |
293 | The value is nil or a string. | |
294 | This function is used both for remote requests | |
7da64e5c | 295 | and for local x-get-selection-internal. |
ede4db72 RS |
296 | |
297 | This calls random Lisp code, and may signal or gc. */ | |
298 | ||
299 | static Lisp_Object | |
300 | x_get_local_selection (selection_symbol, target_type) | |
301 | Lisp_Object selection_symbol, target_type; | |
302 | { | |
303 | Lisp_Object local_value; | |
304 | Lisp_Object handler_fn, value, type, check; | |
305 | int count; | |
306 | ||
307 | local_value = assq_no_quit (selection_symbol, Vselection_alist); | |
308 | ||
309 | if (NILP (local_value)) return Qnil; | |
310 | ||
311 | /* TIMESTAMP and MULTIPLE are special cases 'cause that's easiest. */ | |
312 | if (EQ (target_type, QTIMESTAMP)) | |
313 | { | |
314 | handler_fn = Qnil; | |
8e713be6 | 315 | value = XCAR (XCDR (XCDR (local_value))); |
ede4db72 RS |
316 | } |
317 | #if 0 | |
318 | else if (EQ (target_type, QDELETE)) | |
319 | { | |
320 | handler_fn = Qnil; | |
321 | Fx_disown_selection_internal | |
322 | (selection_symbol, | |
8e713be6 | 323 | XCAR (XCDR (XCDR (local_value)))); |
ede4db72 RS |
324 | value = QNULL; |
325 | } | |
326 | #endif | |
327 | ||
328 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
329 | else if (CONSP (target_type) | |
8e713be6 | 330 | && XCAR (target_type) == QMULTIPLE) |
ede4db72 | 331 | { |
9d2d1dd8 KH |
332 | Lisp_Object pairs; |
333 | int size; | |
ede4db72 | 334 | int i; |
8e713be6 | 335 | pairs = XCDR (target_type); |
9d2d1dd8 | 336 | size = XVECTOR (pairs)->size; |
ede4db72 RS |
337 | /* If the target is MULTIPLE, then target_type looks like |
338 | (MULTIPLE . [[SELECTION1 TARGET1] [SELECTION2 TARGET2] ... ]) | |
339 | We modify the second element of each pair in the vector and | |
340 | return it as [[SELECTION1 <value1>] [SELECTION2 <value2>] ... ] | |
341 | */ | |
342 | for (i = 0; i < size; i++) | |
343 | { | |
9d2d1dd8 KH |
344 | Lisp_Object pair; |
345 | pair = XVECTOR (pairs)->contents [i]; | |
ede4db72 RS |
346 | XVECTOR (pair)->contents [1] |
347 | = x_get_local_selection (XVECTOR (pair)->contents [0], | |
348 | XVECTOR (pair)->contents [1]); | |
349 | } | |
350 | return pairs; | |
351 | } | |
352 | #endif | |
353 | else | |
354 | { | |
355 | /* Don't allow a quit within the converter. | |
356 | When the user types C-g, he would be surprised | |
357 | if by luck it came during a converter. */ | |
358 | count = specpdl_ptr - specpdl; | |
359 | specbind (Qinhibit_quit, Qt); | |
360 | ||
361 | CHECK_SYMBOL (target_type, 0); | |
362 | handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist)); | |
1eb4d468 RS |
363 | if (!NILP (handler_fn)) |
364 | value = call3 (handler_fn, | |
365 | selection_symbol, target_type, | |
8e713be6 | 366 | XCAR (XCDR (local_value))); |
1eb4d468 RS |
367 | else |
368 | value = Qnil; | |
ede4db72 RS |
369 | unbind_to (count, Qnil); |
370 | } | |
371 | ||
372 | /* Make sure this value is of a type that we could transmit | |
373 | to another X client. */ | |
a87ed99c | 374 | |
ede4db72 RS |
375 | check = value; |
376 | if (CONSP (value) | |
8e713be6 KR |
377 | && SYMBOLP (XCAR (value))) |
378 | type = XCAR (value), | |
379 | check = XCDR (value); | |
ede4db72 RS |
380 | |
381 | if (STRINGP (check) | |
382 | || VECTORP (check) | |
383 | || SYMBOLP (check) | |
7da64e5c | 384 | || INTEGERP (check) |
ede4db72 RS |
385 | || NILP (value)) |
386 | return value; | |
a87ed99c | 387 | /* Check for a value that cons_to_long could handle. */ |
ede4db72 | 388 | else if (CONSP (check) |
8e713be6 KR |
389 | && INTEGERP (XCAR (check)) |
390 | && (INTEGERP (XCDR (check)) | |
ede4db72 | 391 | || |
8e713be6 KR |
392 | (CONSP (XCDR (check)) |
393 | && INTEGERP (XCAR (XCDR (check))) | |
394 | && NILP (XCDR (XCDR (check)))))) | |
ede4db72 RS |
395 | return value; |
396 | else | |
397 | return | |
398 | Fsignal (Qerror, | |
a87ed99c | 399 | Fcons (build_string ("invalid data returned by selection-conversion function"), |
ede4db72 RS |
400 | Fcons (handler_fn, Fcons (value, Qnil)))); |
401 | } | |
402 | \f | |
403 | /* Subroutines of x_reply_selection_request. */ | |
404 | ||
5d0ba25b | 405 | /* Send a SelectionNotify event to the requestor with property=None, |
ede4db72 RS |
406 | meaning we were unable to do what they wanted. */ |
407 | ||
408 | static void | |
409 | x_decline_selection_request (event) | |
410 | struct input_event *event; | |
411 | { | |
412 | XSelectionEvent reply; | |
413 | reply.type = SelectionNotify; | |
414 | reply.display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 415 | reply.requestor = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
416 | reply.selection = SELECTION_EVENT_SELECTION (event); |
417 | reply.time = SELECTION_EVENT_TIME (event); | |
418 | reply.target = SELECTION_EVENT_TARGET (event); | |
419 | reply.property = None; | |
420 | ||
421 | BLOCK_INPUT; | |
5d0ba25b | 422 | XSendEvent (reply.display, reply.requestor, False, 0L, |
7ffb2841 | 423 | (XEvent *) &reply); |
5c3a351a | 424 | XFlush (reply.display); |
ede4db72 RS |
425 | UNBLOCK_INPUT; |
426 | } | |
427 | ||
428 | /* This is the selection request currently being processed. | |
429 | It is set to zero when the request is fully processed. */ | |
430 | static struct input_event *x_selection_current_request; | |
431 | ||
432 | /* Used as an unwind-protect clause so that, if a selection-converter signals | |
2a1a4c9d | 433 | an error, we tell the requester that we were unable to do what they wanted |
ede4db72 RS |
434 | before we throw to top-level or go into the debugger or whatever. */ |
435 | ||
436 | static Lisp_Object | |
437 | x_selection_request_lisp_error (ignore) | |
438 | Lisp_Object ignore; | |
439 | { | |
440 | if (x_selection_current_request != 0) | |
441 | x_decline_selection_request (x_selection_current_request); | |
442 | return Qnil; | |
443 | } | |
444 | \f | |
d1f21a66 RS |
445 | |
446 | /* This stuff is so that INCR selections are reentrant (that is, so we can | |
447 | be servicing multiple INCR selection requests simultaneously.) I haven't | |
448 | actually tested that yet. */ | |
449 | ||
450 | /* Keep a list of the property changes that are awaited. */ | |
451 | ||
452 | struct prop_location | |
453 | { | |
454 | int identifier; | |
455 | Display *display; | |
456 | Window window; | |
457 | Atom property; | |
458 | int desired_state; | |
459 | int arrived; | |
460 | struct prop_location *next; | |
461 | }; | |
462 | ||
463 | static struct prop_location *expect_property_change (); | |
464 | static void wait_for_property_change (); | |
465 | static void unexpect_property_change (); | |
466 | static int waiting_for_other_props_on_window (); | |
467 | ||
468 | static int prop_location_identifier; | |
469 | ||
470 | static Lisp_Object property_change_reply; | |
471 | ||
472 | static struct prop_location *property_change_reply_object; | |
473 | ||
474 | static struct prop_location *property_change_wait_list; | |
55b2d45d RS |
475 | |
476 | static Lisp_Object | |
477 | queue_selection_requests_unwind (frame) | |
478 | Lisp_Object frame; | |
479 | { | |
480 | FRAME_PTR f = XFRAME (frame); | |
481 | ||
482 | if (! NILP (frame)) | |
483 | x_stop_queuing_selection_requests (FRAME_X_DISPLAY (f)); | |
ab552306 | 484 | return Qnil; |
55b2d45d RS |
485 | } |
486 | ||
487 | /* Return some frame whose display info is DPYINFO. | |
488 | Return nil if there is none. */ | |
489 | ||
490 | static Lisp_Object | |
491 | some_frame_on_display (dpyinfo) | |
492 | struct x_display_info *dpyinfo; | |
493 | { | |
494 | Lisp_Object list, frame; | |
495 | ||
496 | FOR_EACH_FRAME (list, frame) | |
497 | { | |
498 | if (FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
499 | return frame; | |
500 | } | |
501 | ||
502 | return Qnil; | |
503 | } | |
d1f21a66 | 504 | \f |
ede4db72 RS |
505 | /* Send the reply to a selection request event EVENT. |
506 | TYPE is the type of selection data requested. | |
507 | DATA and SIZE describe the data to send, already converted. | |
508 | FORMAT is the unit-size (in bits) of the data to be transmitted. */ | |
509 | ||
510 | static void | |
511 | x_reply_selection_request (event, format, data, size, type) | |
512 | struct input_event *event; | |
513 | int format, size; | |
514 | unsigned char *data; | |
515 | Atom type; | |
516 | { | |
517 | XSelectionEvent reply; | |
518 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 519 | Window window = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
520 | int bytes_remaining; |
521 | int format_bytes = format/8; | |
522 | int max_bytes = SELECTION_QUANTUM (display); | |
5c3a351a | 523 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
5a499696 | 524 | int count; |
ede4db72 RS |
525 | |
526 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
527 | max_bytes = MAX_SELECTION_QUANTUM; | |
528 | ||
529 | reply.type = SelectionNotify; | |
530 | reply.display = display; | |
5d0ba25b | 531 | reply.requestor = window; |
ede4db72 RS |
532 | reply.selection = SELECTION_EVENT_SELECTION (event); |
533 | reply.time = SELECTION_EVENT_TIME (event); | |
534 | reply.target = SELECTION_EVENT_TARGET (event); | |
535 | reply.property = SELECTION_EVENT_PROPERTY (event); | |
536 | if (reply.property == None) | |
537 | reply.property = reply.target; | |
538 | ||
539 | /* #### XChangeProperty can generate BadAlloc, and we must handle it! */ | |
afe1529d | 540 | BLOCK_INPUT; |
ad7f9d12 | 541 | count = x_catch_errors (display); |
ede4db72 | 542 | |
ede4db72 RS |
543 | /* Store the data on the requested property. |
544 | If the selection is large, only store the first N bytes of it. | |
545 | */ | |
546 | bytes_remaining = size * format_bytes; | |
547 | if (bytes_remaining <= max_bytes) | |
548 | { | |
549 | /* Send all the data at once, with minimal handshaking. */ | |
550 | #if 0 | |
551 | fprintf (stderr,"\nStoring all %d\n", bytes_remaining); | |
552 | #endif | |
553 | XChangeProperty (display, window, reply.property, type, format, | |
554 | PropModeReplace, data, size); | |
555 | /* At this point, the selection was successfully stored; ack it. */ | |
2f65feb6 | 556 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
ede4db72 RS |
557 | } |
558 | else | |
559 | { | |
560 | /* Send an INCR selection. */ | |
d1f21a66 | 561 | struct prop_location *wait_object; |
afe1529d | 562 | int had_errors; |
55b2d45d | 563 | Lisp_Object frame; |
ede4db72 | 564 | |
55b2d45d RS |
565 | frame = some_frame_on_display (dpyinfo); |
566 | ||
567 | /* If the display no longer has frames, we can't expect | |
568 | to get many more selection requests from it, so don't | |
569 | bother trying to queue them. */ | |
570 | if (!NILP (frame)) | |
571 | { | |
572 | x_start_queuing_selection_requests (display); | |
573 | ||
574 | record_unwind_protect (queue_selection_requests_unwind, | |
575 | frame); | |
576 | } | |
2f65feb6 | 577 | |
19126e11 | 578 | if (x_window_to_frame (dpyinfo, window)) /* #### debug */ |
606140dd | 579 | error ("Attempt to transfer an INCR to ourself!"); |
ede4db72 RS |
580 | #if 0 |
581 | fprintf (stderr, "\nINCR %d\n", bytes_remaining); | |
582 | #endif | |
d1f21a66 RS |
583 | wait_object = expect_property_change (display, window, reply.property, |
584 | PropertyDelete); | |
ede4db72 | 585 | |
5c3a351a | 586 | XChangeProperty (display, window, reply.property, dpyinfo->Xatom_INCR, |
55b2d45d RS |
587 | 32, PropModeReplace, |
588 | (unsigned char *) &bytes_remaining, 1); | |
ede4db72 RS |
589 | XSelectInput (display, window, PropertyChangeMask); |
590 | /* Tell 'em the INCR data is there... */ | |
55b2d45d | 591 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
5c3a351a | 592 | XFlush (display); |
afe1529d RS |
593 | |
594 | had_errors = x_had_errors_p (display); | |
2f65feb6 | 595 | UNBLOCK_INPUT; |
ede4db72 | 596 | |
2a1a4c9d | 597 | /* First, wait for the requester to ack by deleting the property. |
ede4db72 | 598 | This can run random lisp code (process handlers) or signal. */ |
afe1529d RS |
599 | if (! had_errors) |
600 | wait_for_property_change (wait_object); | |
ede4db72 RS |
601 | |
602 | while (bytes_remaining) | |
603 | { | |
604 | int i = ((bytes_remaining < max_bytes) | |
605 | ? bytes_remaining | |
606 | : max_bytes); | |
2f65feb6 RS |
607 | |
608 | BLOCK_INPUT; | |
609 | ||
d1f21a66 RS |
610 | wait_object |
611 | = expect_property_change (display, window, reply.property, | |
612 | PropertyDelete); | |
ede4db72 RS |
613 | #if 0 |
614 | fprintf (stderr," INCR adding %d\n", i); | |
615 | #endif | |
616 | /* Append the next chunk of data to the property. */ | |
617 | XChangeProperty (display, window, reply.property, type, format, | |
618 | PropModeAppend, data, i / format_bytes); | |
619 | bytes_remaining -= i; | |
620 | data += i; | |
5c3a351a | 621 | XFlush (display); |
afe1529d | 622 | had_errors = x_had_errors_p (display); |
2f65feb6 | 623 | UNBLOCK_INPUT; |
ede4db72 | 624 | |
afe1529d RS |
625 | if (had_errors) |
626 | break; | |
627 | ||
2a1a4c9d | 628 | /* Now wait for the requester to ack this chunk by deleting the |
ede4db72 RS |
629 | property. This can run random lisp code or signal. |
630 | */ | |
d1f21a66 | 631 | wait_for_property_change (wait_object); |
ede4db72 | 632 | } |
2a1a4c9d | 633 | /* Now write a zero-length chunk to the property to tell the requester |
ede4db72 RS |
634 | that we're done. */ |
635 | #if 0 | |
636 | fprintf (stderr," INCR done\n"); | |
637 | #endif | |
2f65feb6 | 638 | BLOCK_INPUT; |
ede4db72 RS |
639 | if (! waiting_for_other_props_on_window (display, window)) |
640 | XSelectInput (display, window, 0L); | |
641 | ||
642 | XChangeProperty (display, window, reply.property, type, format, | |
643 | PropModeReplace, data, 0); | |
644 | } | |
afe1529d RS |
645 | |
646 | XFlush (display); | |
5a499696 | 647 | x_uncatch_errors (display, count); |
afe1529d | 648 | UNBLOCK_INPUT; |
ede4db72 RS |
649 | } |
650 | \f | |
651 | /* Handle a SelectionRequest event EVENT. | |
652 | This is called from keyboard.c when such an event is found in the queue. */ | |
653 | ||
654 | void | |
655 | x_handle_selection_request (event) | |
656 | struct input_event *event; | |
657 | { | |
658 | struct gcpro gcpro1, gcpro2, gcpro3; | |
9d2d1dd8 | 659 | Lisp_Object local_selection_data; |
ede4db72 | 660 | Lisp_Object selection_symbol; |
9d2d1dd8 KH |
661 | Lisp_Object target_symbol; |
662 | Lisp_Object converted_selection; | |
ede4db72 | 663 | Time local_selection_time; |
9d2d1dd8 | 664 | Lisp_Object successful_p; |
ede4db72 | 665 | int count; |
5c3a351a RS |
666 | struct x_display_info *dpyinfo |
667 | = x_display_info_for_display (SELECTION_EVENT_DISPLAY (event)); | |
ede4db72 | 668 | |
9d2d1dd8 KH |
669 | local_selection_data = Qnil; |
670 | target_symbol = Qnil; | |
671 | converted_selection = Qnil; | |
672 | successful_p = Qnil; | |
673 | ||
ede4db72 RS |
674 | GCPRO3 (local_selection_data, converted_selection, target_symbol); |
675 | ||
5c3a351a RS |
676 | selection_symbol = x_atom_to_symbol (dpyinfo, |
677 | SELECTION_EVENT_DISPLAY (event), | |
ede4db72 RS |
678 | SELECTION_EVENT_SELECTION (event)); |
679 | ||
680 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
ede4db72 RS |
681 | |
682 | if (NILP (local_selection_data)) | |
683 | { | |
684 | /* Someone asked for the selection, but we don't have it any more. | |
685 | */ | |
686 | x_decline_selection_request (event); | |
687 | goto DONE; | |
688 | } | |
689 | ||
690 | local_selection_time = (Time) | |
8e713be6 | 691 | cons_to_long (XCAR (XCDR (XCDR (local_selection_data)))); |
ede4db72 RS |
692 | |
693 | if (SELECTION_EVENT_TIME (event) != CurrentTime | |
7da64e5c | 694 | && local_selection_time > SELECTION_EVENT_TIME (event)) |
ede4db72 RS |
695 | { |
696 | /* Someone asked for the selection, and we have one, but not the one | |
697 | they're looking for. | |
698 | */ | |
699 | x_decline_selection_request (event); | |
700 | goto DONE; | |
701 | } | |
702 | ||
703 | count = specpdl_ptr - specpdl; | |
704 | x_selection_current_request = event; | |
705 | record_unwind_protect (x_selection_request_lisp_error, Qnil); | |
706 | ||
5c3a351a | 707 | target_symbol = x_atom_to_symbol (dpyinfo, SELECTION_EVENT_DISPLAY (event), |
ede4db72 RS |
708 | SELECTION_EVENT_TARGET (event)); |
709 | ||
710 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
711 | if (EQ (target_symbol, QMULTIPLE)) | |
712 | target_symbol = fetch_multiple_target (event); | |
713 | #endif | |
714 | ||
715 | /* Convert lisp objects back into binary data */ | |
716 | ||
717 | converted_selection | |
718 | = x_get_local_selection (selection_symbol, target_symbol); | |
719 | ||
720 | if (! NILP (converted_selection)) | |
721 | { | |
722 | unsigned char *data; | |
723 | unsigned int size; | |
724 | int format; | |
725 | Atom type; | |
aca39f42 RS |
726 | int nofree; |
727 | ||
2f65feb6 RS |
728 | lisp_data_to_selection_data (SELECTION_EVENT_DISPLAY (event), |
729 | converted_selection, | |
aca39f42 | 730 | &data, &type, &size, &format, &nofree); |
ede4db72 RS |
731 | |
732 | x_reply_selection_request (event, format, data, size, type); | |
733 | successful_p = Qt; | |
734 | ||
735 | /* Indicate we have successfully processed this event. */ | |
7da64e5c | 736 | x_selection_current_request = 0; |
ede4db72 | 737 | |
4feb31b2 | 738 | /* Use xfree, not XFree, because lisp_data_to_selection_data |
0158abbc | 739 | calls xmalloc itself. */ |
aca39f42 | 740 | if (!nofree) |
4feb31b2 | 741 | xfree (data); |
ede4db72 RS |
742 | } |
743 | unbind_to (count, Qnil); | |
744 | ||
745 | DONE: | |
746 | ||
747 | UNGCPRO; | |
748 | ||
749 | /* Let random lisp code notice that the selection has been asked for. */ | |
750 | { | |
9d2d1dd8 KH |
751 | Lisp_Object rest; |
752 | rest = Vx_sent_selection_hooks; | |
ede4db72 RS |
753 | if (!EQ (rest, Qunbound)) |
754 | for (; CONSP (rest); rest = Fcdr (rest)) | |
755 | call3 (Fcar (rest), selection_symbol, target_symbol, successful_p); | |
756 | } | |
757 | } | |
758 | \f | |
e18e6130 | 759 | /* Handle a SelectionClear event EVENT, which indicates that some |
ede4db72 RS |
760 | client cleared out our previously asserted selection. |
761 | This is called from keyboard.c when such an event is found in the queue. */ | |
762 | ||
763 | void | |
764 | x_handle_selection_clear (event) | |
765 | struct input_event *event; | |
766 | { | |
767 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
768 | Atom selection = SELECTION_EVENT_SELECTION (event); | |
769 | Time changed_owner_time = SELECTION_EVENT_TIME (event); | |
770 | ||
771 | Lisp_Object selection_symbol, local_selection_data; | |
772 | Time local_selection_time; | |
5c3a351a | 773 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
e18e6130 RS |
774 | struct x_display_info *t_dpyinfo; |
775 | ||
776 | /* If the new selection owner is also Emacs, | |
777 | don't clear the new selection. */ | |
778 | BLOCK_INPUT; | |
779 | /* Check each display on the same terminal, | |
780 | to see if this Emacs job now owns the selection | |
781 | through that display. */ | |
782 | for (t_dpyinfo = x_display_list; t_dpyinfo; t_dpyinfo = t_dpyinfo->next) | |
783 | if (t_dpyinfo->kboard == dpyinfo->kboard) | |
784 | { | |
785 | Window owner_window | |
786 | = XGetSelectionOwner (t_dpyinfo->display, selection); | |
787 | if (x_window_to_frame (t_dpyinfo, owner_window) != 0) | |
788 | { | |
789 | UNBLOCK_INPUT; | |
790 | return; | |
791 | } | |
792 | } | |
793 | UNBLOCK_INPUT; | |
ede4db72 | 794 | |
5c3a351a | 795 | selection_symbol = x_atom_to_symbol (dpyinfo, display, selection); |
ede4db72 RS |
796 | |
797 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
798 | ||
799 | /* Well, we already believe that we don't own it, so that's just fine. */ | |
800 | if (NILP (local_selection_data)) return; | |
801 | ||
802 | local_selection_time = (Time) | |
8e713be6 | 803 | cons_to_long (XCAR (XCDR (XCDR (local_selection_data)))); |
ede4db72 RS |
804 | |
805 | /* This SelectionClear is for a selection that we no longer own, so we can | |
806 | disregard it. (That is, we have reasserted the selection since this | |
807 | request was generated.) */ | |
808 | ||
809 | if (changed_owner_time != CurrentTime | |
810 | && local_selection_time > changed_owner_time) | |
811 | return; | |
812 | ||
813 | /* Otherwise, we're really honest and truly being told to drop it. | |
814 | Don't use Fdelq as that may QUIT;. */ | |
815 | ||
816 | if (EQ (local_selection_data, Fcar (Vselection_alist))) | |
817 | Vselection_alist = Fcdr (Vselection_alist); | |
818 | else | |
819 | { | |
820 | Lisp_Object rest; | |
821 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
8e713be6 | 822 | if (EQ (local_selection_data, Fcar (XCDR (rest)))) |
ede4db72 | 823 | { |
8e713be6 | 824 | XCDR (rest) = Fcdr (XCDR (rest)); |
ede4db72 RS |
825 | break; |
826 | } | |
827 | } | |
828 | ||
829 | /* Let random lisp code notice that the selection has been stolen. */ | |
830 | ||
831 | { | |
d1f21a66 RS |
832 | Lisp_Object rest; |
833 | rest = Vx_lost_selection_hooks; | |
ede4db72 | 834 | if (!EQ (rest, Qunbound)) |
d1f21a66 RS |
835 | { |
836 | for (; CONSP (rest); rest = Fcdr (rest)) | |
837 | call1 (Fcar (rest), selection_symbol); | |
7c6b2ea4 | 838 | prepare_menu_bars (); |
d1f21a66 RS |
839 | redisplay_preserve_echo_area (); |
840 | } | |
ede4db72 RS |
841 | } |
842 | } | |
843 | ||
118bd841 RS |
844 | /* Clear all selections that were made from frame F. |
845 | We do this when about to delete a frame. */ | |
846 | ||
847 | void | |
848 | x_clear_frame_selections (f) | |
849 | FRAME_PTR f; | |
850 | { | |
851 | Lisp_Object frame; | |
852 | Lisp_Object rest; | |
853 | ||
90851bbe | 854 | XSETFRAME (frame, f); |
118bd841 RS |
855 | |
856 | /* Otherwise, we're really honest and truly being told to drop it. | |
857 | Don't use Fdelq as that may QUIT;. */ | |
858 | ||
0d199f9c RS |
859 | /* Delete elements from the beginning of Vselection_alist. */ |
860 | while (!NILP (Vselection_alist) | |
861 | && EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (Vselection_alist))))))) | |
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; | |
867 | selection_symbol = Fcar (Fcar (Vselection_alist)); | |
868 | ||
869 | if (!EQ (hooks, Qunbound)) | |
870 | { | |
871 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
872 | call1 (Fcar (hooks), selection_symbol); | |
996b804d MB |
873 | #if 0 /* This can crash when deleting a frame |
874 | from x_connection_closed. Anyway, it seems unnecessary; | |
875 | something else should cause a redisplay. */ | |
0d199f9c | 876 | redisplay_preserve_echo_area (); |
996b804d | 877 | #endif |
0d199f9c RS |
878 | } |
879 | ||
880 | Vselection_alist = Fcdr (Vselection_alist); | |
881 | } | |
882 | ||
883 | /* Delete elements after the beginning of Vselection_alist. */ | |
118bd841 | 884 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) |
8e713be6 | 885 | if (EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (XCDR (rest)))))))) |
118bd841 RS |
886 | { |
887 | /* Let random Lisp code notice that the selection has been stolen. */ | |
888 | Lisp_Object hooks, selection_symbol; | |
889 | ||
890 | hooks = Vx_lost_selection_hooks; | |
8e713be6 | 891 | selection_symbol = Fcar (Fcar (XCDR (rest))); |
118bd841 RS |
892 | |
893 | if (!EQ (hooks, Qunbound)) | |
894 | { | |
895 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
896 | call1 (Fcar (hooks), selection_symbol); | |
996b804d | 897 | #if 0 /* See above */ |
118bd841 | 898 | redisplay_preserve_echo_area (); |
996b804d | 899 | #endif |
118bd841 | 900 | } |
8e713be6 | 901 | XCDR (rest) = Fcdr (XCDR (rest)); |
118bd841 RS |
902 | break; |
903 | } | |
904 | } | |
ede4db72 | 905 | \f |
ede4db72 RS |
906 | /* Nonzero if any properties for DISPLAY and WINDOW |
907 | are on the list of what we are waiting for. */ | |
908 | ||
909 | static int | |
910 | waiting_for_other_props_on_window (display, window) | |
911 | Display *display; | |
912 | Window window; | |
913 | { | |
914 | struct prop_location *rest = property_change_wait_list; | |
915 | while (rest) | |
916 | if (rest->display == display && rest->window == window) | |
917 | return 1; | |
918 | else | |
919 | rest = rest->next; | |
920 | return 0; | |
921 | } | |
922 | ||
923 | /* Add an entry to the list of property changes we are waiting for. | |
924 | DISPLAY, WINDOW, PROPERTY, STATE describe what we will wait for. | |
925 | The return value is a number that uniquely identifies | |
926 | this awaited property change. */ | |
927 | ||
d1f21a66 | 928 | static struct prop_location * |
ede4db72 RS |
929 | expect_property_change (display, window, property, state) |
930 | Display *display; | |
931 | Window window; | |
6c070502 | 932 | Atom property; |
ede4db72 RS |
933 | int state; |
934 | { | |
935 | struct prop_location *pl | |
936 | = (struct prop_location *) xmalloc (sizeof (struct prop_location)); | |
2f65feb6 | 937 | pl->identifier = ++prop_location_identifier; |
ede4db72 RS |
938 | pl->display = display; |
939 | pl->window = window; | |
940 | pl->property = property; | |
941 | pl->desired_state = state; | |
942 | pl->next = property_change_wait_list; | |
d1f21a66 | 943 | pl->arrived = 0; |
ede4db72 | 944 | property_change_wait_list = pl; |
d1f21a66 | 945 | return pl; |
ede4db72 RS |
946 | } |
947 | ||
948 | /* Delete an entry from the list of property changes we are waiting for. | |
2f65feb6 | 949 | IDENTIFIER is the number that uniquely identifies the entry. */ |
ede4db72 RS |
950 | |
951 | static void | |
d1f21a66 RS |
952 | unexpect_property_change (location) |
953 | struct prop_location *location; | |
ede4db72 RS |
954 | { |
955 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
956 | while (rest) | |
957 | { | |
d1f21a66 | 958 | if (rest == location) |
ede4db72 RS |
959 | { |
960 | if (prev) | |
961 | prev->next = rest->next; | |
962 | else | |
963 | property_change_wait_list = rest->next; | |
4feb31b2 | 964 | xfree (rest); |
ede4db72 RS |
965 | return; |
966 | } | |
967 | prev = rest; | |
968 | rest = rest->next; | |
969 | } | |
970 | } | |
971 | ||
2f65feb6 RS |
972 | /* Remove the property change expectation element for IDENTIFIER. */ |
973 | ||
974 | static Lisp_Object | |
975 | wait_for_property_change_unwind (identifierval) | |
976 | Lisp_Object identifierval; | |
977 | { | |
c4898489 | 978 | unexpect_property_change ((struct prop_location *) |
8e713be6 KR |
979 | (XFASTINT (XCAR (identifierval)) << 16 |
980 | | XFASTINT (XCDR (identifierval)))); | |
ab552306 | 981 | return Qnil; |
2f65feb6 RS |
982 | } |
983 | ||
ede4db72 | 984 | /* Actually wait for a property change. |
2f65feb6 | 985 | IDENTIFIER should be the value that expect_property_change returned. */ |
ede4db72 RS |
986 | |
987 | static void | |
d1f21a66 RS |
988 | wait_for_property_change (location) |
989 | struct prop_location *location; | |
ede4db72 | 990 | { |
2f65feb6 RS |
991 | int secs, usecs; |
992 | int count = specpdl_ptr - specpdl; | |
d1f21a66 RS |
993 | Lisp_Object tem; |
994 | ||
c4898489 | 995 | tem = Fcons (Qnil, Qnil); |
8e713be6 KR |
996 | XSETFASTINT (XCAR (tem), (EMACS_UINT)location >> 16); |
997 | XSETFASTINT (XCDR (tem), (EMACS_UINT)location & 0xffff); | |
2f65feb6 RS |
998 | |
999 | /* Make sure to do unexpect_property_change if we quit or err. */ | |
d1f21a66 | 1000 | record_unwind_protect (wait_for_property_change_unwind, tem); |
2f65feb6 | 1001 | |
8e713be6 | 1002 | XCAR (property_change_reply) = Qnil; |
2f65feb6 | 1003 | |
afe1529d RS |
1004 | property_change_reply_object = location; |
1005 | /* If the event we are waiting for arrives beyond here, it will set | |
1006 | property_change_reply, because property_change_reply_object says so. */ | |
d1f21a66 RS |
1007 | if (! location->arrived) |
1008 | { | |
d1f21a66 RS |
1009 | secs = x_selection_timeout / 1000; |
1010 | usecs = (x_selection_timeout % 1000) * 1000; | |
1011 | wait_reading_process_input (secs, usecs, property_change_reply, 0); | |
1012 | ||
8e713be6 | 1013 | if (NILP (XCAR (property_change_reply))) |
606140dd | 1014 | error ("Timed out waiting for property-notify event"); |
d1f21a66 | 1015 | } |
2f65feb6 RS |
1016 | |
1017 | unbind_to (count, Qnil); | |
ede4db72 RS |
1018 | } |
1019 | ||
1020 | /* Called from XTread_socket in response to a PropertyNotify event. */ | |
1021 | ||
1022 | void | |
1023 | x_handle_property_notify (event) | |
1024 | XPropertyEvent *event; | |
1025 | { | |
1026 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
1027 | while (rest) | |
1028 | { | |
1029 | if (rest->property == event->atom | |
1030 | && rest->window == event->window | |
1031 | && rest->display == event->display | |
1032 | && rest->desired_state == event->state) | |
1033 | { | |
1034 | #if 0 | |
1035 | fprintf (stderr, "Saw expected prop-%s on %s\n", | |
1036 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a | 1037 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, event->display, |
ede4db72 RS |
1038 | event->atom)) |
1039 | ->name->data); | |
1040 | #endif | |
1041 | ||
d1f21a66 RS |
1042 | rest->arrived = 1; |
1043 | ||
ede4db72 RS |
1044 | /* If this is the one wait_for_property_change is waiting for, |
1045 | tell it to wake up. */ | |
d1f21a66 | 1046 | if (rest == property_change_reply_object) |
8e713be6 | 1047 | XCAR (property_change_reply) = Qt; |
ede4db72 RS |
1048 | |
1049 | if (prev) | |
1050 | prev->next = rest->next; | |
1051 | else | |
1052 | property_change_wait_list = rest->next; | |
4feb31b2 | 1053 | xfree (rest); |
ede4db72 RS |
1054 | return; |
1055 | } | |
1056 | prev = rest; | |
1057 | rest = rest->next; | |
1058 | } | |
1059 | #if 0 | |
1060 | fprintf (stderr, "Saw UNexpected prop-%s on %s\n", | |
1061 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a RS |
1062 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, |
1063 | event->display, event->atom)) | |
ede4db72 RS |
1064 | ->name->data); |
1065 | #endif | |
1066 | } | |
1067 | ||
1068 | ||
1069 | \f | |
1070 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1071 | ||
1072 | static Lisp_Object | |
1073 | fetch_multiple_target (event) | |
1074 | XSelectionRequestEvent *event; | |
1075 | { | |
1076 | Display *display = event->display; | |
5d0ba25b | 1077 | Window window = event->requestor; |
ede4db72 RS |
1078 | Atom target = event->target; |
1079 | Atom selection_atom = event->selection; | |
1080 | int result; | |
1081 | ||
1082 | return | |
1083 | Fcons (QMULTIPLE, | |
1084 | x_get_window_property_as_lisp_data (display, window, target, | |
1085 | QMULTIPLE, selection_atom)); | |
1086 | } | |
1087 | ||
1088 | static Lisp_Object | |
1089 | copy_multiple_data (obj) | |
1090 | Lisp_Object obj; | |
1091 | { | |
1092 | Lisp_Object vec; | |
1093 | int i; | |
1094 | int size; | |
1095 | if (CONSP (obj)) | |
8e713be6 | 1096 | return Fcons (XCAR (obj), copy_multiple_data (XCDR (obj))); |
ede4db72 RS |
1097 | |
1098 | CHECK_VECTOR (obj, 0); | |
1099 | vec = Fmake_vector (size = XVECTOR (obj)->size, Qnil); | |
1100 | for (i = 0; i < size; i++) | |
1101 | { | |
1102 | Lisp_Object vec2 = XVECTOR (obj)->contents [i]; | |
1103 | CHECK_VECTOR (vec2, 0); | |
1104 | if (XVECTOR (vec2)->size != 2) | |
1105 | /* ??? Confusing error message */ | |
1106 | Fsignal (Qerror, Fcons (build_string ("vectors must be of length 2"), | |
1107 | Fcons (vec2, Qnil))); | |
1108 | XVECTOR (vec)->contents [i] = Fmake_vector (2, Qnil); | |
1109 | XVECTOR (XVECTOR (vec)->contents [i])->contents [0] | |
1110 | = XVECTOR (vec2)->contents [0]; | |
1111 | XVECTOR (XVECTOR (vec)->contents [i])->contents [1] | |
1112 | = XVECTOR (vec2)->contents [1]; | |
1113 | } | |
1114 | return vec; | |
1115 | } | |
1116 | ||
1117 | #endif | |
1118 | ||
1119 | \f | |
1120 | /* Variables for communication with x_handle_selection_notify. */ | |
1121 | static Atom reading_which_selection; | |
1122 | static Lisp_Object reading_selection_reply; | |
1123 | static Window reading_selection_window; | |
1124 | ||
1125 | /* Do protocol to read selection-data from the server. | |
1126 | Converts this to Lisp data and returns it. */ | |
1127 | ||
1128 | static Lisp_Object | |
1129 | x_get_foreign_selection (selection_symbol, target_type) | |
1130 | Lisp_Object selection_symbol, target_type; | |
1131 | { | |
378c33ca GM |
1132 | struct frame *sf = SELECTED_FRAME (); |
1133 | Window requestor_window = FRAME_X_WINDOW (sf); | |
1134 | Display *display = FRAME_X_DISPLAY (sf); | |
1135 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (sf); | |
5d0ba25b | 1136 | Time requestor_time = last_event_timestamp; |
5c3a351a RS |
1137 | Atom target_property = dpyinfo->Xatom_EMACS_TMP; |
1138 | Atom selection_atom = symbol_to_x_atom (dpyinfo, display, selection_symbol); | |
ede4db72 | 1139 | Atom type_atom; |
80da0190 | 1140 | int secs, usecs; |
5a499696 | 1141 | int count; |
55b2d45d | 1142 | Lisp_Object frame; |
ede4db72 RS |
1143 | |
1144 | if (CONSP (target_type)) | |
8e713be6 | 1145 | type_atom = symbol_to_x_atom (dpyinfo, display, XCAR (target_type)); |
ede4db72 | 1146 | else |
5c3a351a | 1147 | type_atom = symbol_to_x_atom (dpyinfo, display, target_type); |
ede4db72 RS |
1148 | |
1149 | BLOCK_INPUT; | |
5a499696 | 1150 | count = x_catch_errors (display); |
ede4db72 | 1151 | XConvertSelection (display, selection_atom, type_atom, target_property, |
5d0ba25b | 1152 | requestor_window, requestor_time); |
5c3a351a | 1153 | XFlush (display); |
ede4db72 RS |
1154 | |
1155 | /* Prepare to block until the reply has been read. */ | |
5d0ba25b | 1156 | reading_selection_window = requestor_window; |
ede4db72 | 1157 | reading_which_selection = selection_atom; |
8e713be6 | 1158 | XCAR (reading_selection_reply) = Qnil; |
55b2d45d RS |
1159 | |
1160 | frame = some_frame_on_display (dpyinfo); | |
1161 | ||
1162 | /* If the display no longer has frames, we can't expect | |
1163 | to get many more selection requests from it, so don't | |
1164 | bother trying to queue them. */ | |
1165 | if (!NILP (frame)) | |
1166 | { | |
1167 | x_start_queuing_selection_requests (display); | |
1168 | ||
1169 | record_unwind_protect (queue_selection_requests_unwind, | |
1170 | frame); | |
1171 | } | |
ede4db72 RS |
1172 | UNBLOCK_INPUT; |
1173 | ||
80da0190 RS |
1174 | /* This allows quits. Also, don't wait forever. */ |
1175 | secs = x_selection_timeout / 1000; | |
1176 | usecs = (x_selection_timeout % 1000) * 1000; | |
1177 | wait_reading_process_input (secs, usecs, reading_selection_reply, 0); | |
ede4db72 | 1178 | |
7c6b2ea4 | 1179 | BLOCK_INPUT; |
a7b24d46 | 1180 | x_check_errors (display, "Cannot get selection: %s"); |
5a499696 | 1181 | x_uncatch_errors (display, count); |
7c6b2ea4 RS |
1182 | UNBLOCK_INPUT; |
1183 | ||
8e713be6 | 1184 | if (NILP (XCAR (reading_selection_reply))) |
606140dd | 1185 | error ("Timed out waiting for reply from selection owner"); |
8e713be6 | 1186 | if (EQ (XCAR (reading_selection_reply), Qlambda)) |
606140dd | 1187 | error ("No `%s' selection", XSYMBOL (selection_symbol)->name->data); |
ede4db72 RS |
1188 | |
1189 | /* Otherwise, the selection is waiting for us on the requested property. */ | |
1190 | return | |
5d0ba25b | 1191 | x_get_window_property_as_lisp_data (display, requestor_window, |
ede4db72 RS |
1192 | target_property, target_type, |
1193 | selection_atom); | |
1194 | } | |
1195 | \f | |
1196 | /* Subroutines of x_get_window_property_as_lisp_data */ | |
1197 | ||
4feb31b2 | 1198 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1199 | |
ede4db72 RS |
1200 | static void |
1201 | x_get_window_property (display, window, property, data_ret, bytes_ret, | |
1202 | actual_type_ret, actual_format_ret, actual_size_ret, | |
1203 | delete_p) | |
1204 | Display *display; | |
1205 | Window window; | |
1206 | Atom property; | |
1207 | unsigned char **data_ret; | |
1208 | int *bytes_ret; | |
1209 | Atom *actual_type_ret; | |
1210 | int *actual_format_ret; | |
1211 | unsigned long *actual_size_ret; | |
1212 | int delete_p; | |
1213 | { | |
1214 | int total_size; | |
1215 | unsigned long bytes_remaining; | |
1216 | int offset = 0; | |
1217 | unsigned char *tmp_data = 0; | |
1218 | int result; | |
1219 | int buffer_size = SELECTION_QUANTUM (display); | |
1220 | if (buffer_size > MAX_SELECTION_QUANTUM) buffer_size = MAX_SELECTION_QUANTUM; | |
1221 | ||
1222 | BLOCK_INPUT; | |
1223 | /* First probe the thing to find out how big it is. */ | |
1224 | result = XGetWindowProperty (display, window, property, | |
137edb72 | 1225 | 0L, 0L, False, AnyPropertyType, |
ede4db72 RS |
1226 | actual_type_ret, actual_format_ret, |
1227 | actual_size_ret, | |
1228 | &bytes_remaining, &tmp_data); | |
ede4db72 RS |
1229 | if (result != Success) |
1230 | { | |
2f65feb6 | 1231 | UNBLOCK_INPUT; |
ede4db72 RS |
1232 | *data_ret = 0; |
1233 | *bytes_ret = 0; | |
1234 | return; | |
1235 | } | |
0158abbc RS |
1236 | /* This was allocated by Xlib, so use XFree. */ |
1237 | XFree ((char *) tmp_data); | |
ede4db72 RS |
1238 | |
1239 | if (*actual_type_ret == None || *actual_format_ret == 0) | |
1240 | { | |
2f65feb6 | 1241 | UNBLOCK_INPUT; |
ede4db72 RS |
1242 | return; |
1243 | } | |
1244 | ||
1245 | total_size = bytes_remaining + 1; | |
1246 | *data_ret = (unsigned char *) xmalloc (total_size); | |
1247 | ||
2a1a4c9d | 1248 | /* Now read, until we've gotten it all. */ |
ede4db72 RS |
1249 | while (bytes_remaining) |
1250 | { | |
1251 | #if 0 | |
1252 | int last = bytes_remaining; | |
1253 | #endif | |
1254 | result | |
1255 | = XGetWindowProperty (display, window, property, | |
137edb72 | 1256 | (long)offset/4, (long)buffer_size/4, |
2f65feb6 | 1257 | False, |
ede4db72 RS |
1258 | AnyPropertyType, |
1259 | actual_type_ret, actual_format_ret, | |
1260 | actual_size_ret, &bytes_remaining, &tmp_data); | |
1261 | #if 0 | |
1262 | fprintf (stderr, "<< read %d\n", last-bytes_remaining); | |
1263 | #endif | |
1264 | /* If this doesn't return Success at this point, it means that | |
1265 | some clod deleted the selection while we were in the midst of | |
1266 | reading it. Deal with that, I guess.... | |
1267 | */ | |
1268 | if (result != Success) break; | |
1269 | *actual_size_ret *= *actual_format_ret / 8; | |
1270 | bcopy (tmp_data, (*data_ret) + offset, *actual_size_ret); | |
1271 | offset += *actual_size_ret; | |
0158abbc RS |
1272 | /* This was allocated by Xlib, so use XFree. */ |
1273 | XFree ((char *) tmp_data); | |
ede4db72 | 1274 | } |
2f65feb6 | 1275 | |
5c3a351a | 1276 | XFlush (display); |
ede4db72 RS |
1277 | UNBLOCK_INPUT; |
1278 | *bytes_ret = offset; | |
1279 | } | |
1280 | \f | |
4feb31b2 | 1281 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1282 | |
ede4db72 RS |
1283 | static void |
1284 | receive_incremental_selection (display, window, property, target_type, | |
1285 | min_size_bytes, data_ret, size_bytes_ret, | |
1286 | type_ret, format_ret, size_ret) | |
1287 | Display *display; | |
1288 | Window window; | |
1289 | Atom property; | |
1290 | Lisp_Object target_type; /* for error messages only */ | |
1291 | unsigned int min_size_bytes; | |
1292 | unsigned char **data_ret; | |
1293 | int *size_bytes_ret; | |
1294 | Atom *type_ret; | |
1295 | unsigned long *size_ret; | |
1296 | int *format_ret; | |
1297 | { | |
1298 | int offset = 0; | |
d1f21a66 | 1299 | struct prop_location *wait_object; |
ede4db72 RS |
1300 | *size_bytes_ret = min_size_bytes; |
1301 | *data_ret = (unsigned char *) xmalloc (*size_bytes_ret); | |
1302 | #if 0 | |
1303 | fprintf (stderr, "\nread INCR %d\n", min_size_bytes); | |
1304 | #endif | |
2f65feb6 RS |
1305 | |
1306 | /* At this point, we have read an INCR property. | |
1307 | Delete the property to ack it. | |
1308 | (But first, prepare to receive the next event in this handshake.) | |
ede4db72 RS |
1309 | |
1310 | Now, we must loop, waiting for the sending window to put a value on | |
1311 | that property, then reading the property, then deleting it to ack. | |
1312 | We are done when the sender places a property of length 0. | |
1313 | */ | |
2f65feb6 RS |
1314 | BLOCK_INPUT; |
1315 | XSelectInput (display, window, STANDARD_EVENT_SET | PropertyChangeMask); | |
1316 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1317 | wait_object = expect_property_change (display, window, property, |
1318 | PropertyNewValue); | |
5c3a351a | 1319 | XFlush (display); |
2f65feb6 RS |
1320 | UNBLOCK_INPUT; |
1321 | ||
ede4db72 RS |
1322 | while (1) |
1323 | { | |
1324 | unsigned char *tmp_data; | |
1325 | int tmp_size_bytes; | |
d1f21a66 | 1326 | wait_for_property_change (wait_object); |
ede4db72 | 1327 | /* expect it again immediately, because x_get_window_property may |
2a1a4c9d | 1328 | .. no it won't, I don't get it. |
ede4db72 RS |
1329 | .. Ok, I get it now, the Xt code that implements INCR is broken. |
1330 | */ | |
ede4db72 RS |
1331 | x_get_window_property (display, window, property, |
1332 | &tmp_data, &tmp_size_bytes, | |
1333 | type_ret, format_ret, size_ret, 1); | |
1334 | ||
1335 | if (tmp_size_bytes == 0) /* we're done */ | |
1336 | { | |
1337 | #if 0 | |
1338 | fprintf (stderr, " read INCR done\n"); | |
1339 | #endif | |
2f65feb6 RS |
1340 | if (! waiting_for_other_props_on_window (display, window)) |
1341 | XSelectInput (display, window, STANDARD_EVENT_SET); | |
d1f21a66 | 1342 | unexpect_property_change (wait_object); |
4feb31b2 | 1343 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1344 | calls xmalloc itself. */ |
4feb31b2 | 1345 | if (tmp_data) xfree (tmp_data); |
ede4db72 RS |
1346 | break; |
1347 | } | |
2f65feb6 RS |
1348 | |
1349 | BLOCK_INPUT; | |
1350 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1351 | wait_object = expect_property_change (display, window, property, |
1352 | PropertyNewValue); | |
5c3a351a | 1353 | XFlush (display); |
2f65feb6 RS |
1354 | UNBLOCK_INPUT; |
1355 | ||
ede4db72 RS |
1356 | #if 0 |
1357 | fprintf (stderr, " read INCR %d\n", tmp_size_bytes); | |
1358 | #endif | |
1359 | if (*size_bytes_ret < offset + tmp_size_bytes) | |
1360 | { | |
1361 | #if 0 | |
1362 | fprintf (stderr, " read INCR realloc %d -> %d\n", | |
1363 | *size_bytes_ret, offset + tmp_size_bytes); | |
1364 | #endif | |
1365 | *size_bytes_ret = offset + tmp_size_bytes; | |
1366 | *data_ret = (unsigned char *) xrealloc (*data_ret, *size_bytes_ret); | |
1367 | } | |
018cfa07 | 1368 | bcopy (tmp_data, (*data_ret) + offset, tmp_size_bytes); |
ede4db72 | 1369 | offset += tmp_size_bytes; |
4feb31b2 | 1370 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1371 | calls xmalloc itself. */ |
4feb31b2 | 1372 | xfree (tmp_data); |
ede4db72 RS |
1373 | } |
1374 | } | |
1375 | \f | |
1376 | /* Once a requested selection is "ready" (we got a SelectionNotify event), | |
1377 | fetch value from property PROPERTY of X window WINDOW on display DISPLAY. | |
1378 | TARGET_TYPE and SELECTION_ATOM are used in error message if this fails. */ | |
1379 | ||
1380 | static Lisp_Object | |
1381 | x_get_window_property_as_lisp_data (display, window, property, target_type, | |
1382 | selection_atom) | |
1383 | Display *display; | |
1384 | Window window; | |
1385 | Atom property; | |
1386 | Lisp_Object target_type; /* for error messages only */ | |
1387 | Atom selection_atom; /* for error messages only */ | |
1388 | { | |
1389 | Atom actual_type; | |
1390 | int actual_format; | |
1391 | unsigned long actual_size; | |
1392 | unsigned char *data = 0; | |
1393 | int bytes = 0; | |
1394 | Lisp_Object val; | |
5c3a351a | 1395 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 RS |
1396 | |
1397 | x_get_window_property (display, window, property, &data, &bytes, | |
1398 | &actual_type, &actual_format, &actual_size, 1); | |
1399 | if (! data) | |
1400 | { | |
1401 | int there_is_a_selection_owner; | |
1402 | BLOCK_INPUT; | |
1403 | there_is_a_selection_owner | |
1404 | = XGetSelectionOwner (display, selection_atom); | |
1405 | UNBLOCK_INPUT; | |
5a499696 RS |
1406 | Fsignal (Qerror, |
1407 | there_is_a_selection_owner | |
1408 | ? Fcons (build_string ("selection owner couldn't convert"), | |
ede4db72 RS |
1409 | actual_type |
1410 | ? Fcons (target_type, | |
5c3a351a RS |
1411 | Fcons (x_atom_to_symbol (dpyinfo, display, |
1412 | actual_type), | |
ede4db72 RS |
1413 | Qnil)) |
1414 | : Fcons (target_type, Qnil)) | |
5a499696 RS |
1415 | : Fcons (build_string ("no selection"), |
1416 | Fcons (x_atom_to_symbol (dpyinfo, display, | |
1417 | selection_atom), | |
1418 | Qnil))); | |
ede4db72 RS |
1419 | } |
1420 | ||
5c3a351a | 1421 | if (actual_type == dpyinfo->Xatom_INCR) |
ede4db72 RS |
1422 | { |
1423 | /* That wasn't really the data, just the beginning. */ | |
1424 | ||
1425 | unsigned int min_size_bytes = * ((unsigned int *) data); | |
1426 | BLOCK_INPUT; | |
4feb31b2 | 1427 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1428 | calls xmalloc itself. */ |
4feb31b2 | 1429 | xfree ((char *) data); |
ede4db72 RS |
1430 | UNBLOCK_INPUT; |
1431 | receive_incremental_selection (display, window, property, target_type, | |
1432 | min_size_bytes, &data, &bytes, | |
1433 | &actual_type, &actual_format, | |
1434 | &actual_size); | |
1435 | } | |
1436 | ||
2f65feb6 RS |
1437 | BLOCK_INPUT; |
1438 | XDeleteProperty (display, window, property); | |
5c3a351a | 1439 | XFlush (display); |
2f65feb6 RS |
1440 | UNBLOCK_INPUT; |
1441 | ||
ede4db72 RS |
1442 | /* It's been read. Now convert it to a lisp object in some semi-rational |
1443 | manner. */ | |
1444 | val = selection_data_to_lisp_data (display, data, bytes, | |
1445 | actual_type, actual_format); | |
1446 | ||
4feb31b2 | 1447 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1448 | calls xmalloc itself. */ |
4feb31b2 | 1449 | xfree ((char *) data); |
ede4db72 RS |
1450 | return val; |
1451 | } | |
1452 | \f | |
1453 | /* These functions convert from the selection data read from the server into | |
1454 | something that we can use from Lisp, and vice versa. | |
1455 | ||
1456 | Type: Format: Size: Lisp Type: | |
1457 | ----- ------- ----- ----------- | |
1458 | * 8 * String | |
1459 | ATOM 32 1 Symbol | |
1460 | ATOM 32 > 1 Vector of Symbols | |
1461 | * 16 1 Integer | |
1462 | * 16 > 1 Vector of Integers | |
1463 | * 32 1 if <=16 bits: Integer | |
1464 | if > 16 bits: Cons of top16, bot16 | |
1465 | * 32 > 1 Vector of the above | |
1466 | ||
1467 | When converting a Lisp number to C, it is assumed to be of format 16 if | |
1468 | it is an integer, and of format 32 if it is a cons of two integers. | |
1469 | ||
1470 | When converting a vector of numbers from Lisp to C, it is assumed to be | |
1471 | of format 16 if every element in the vector is an integer, and is assumed | |
1472 | to be of format 32 if any element is a cons of two integers. | |
1473 | ||
1474 | When converting an object to C, it may be of the form (SYMBOL . <data>) | |
1475 | where SYMBOL is what we should claim that the type is. Format and | |
1476 | representation are as above. */ | |
1477 | ||
1478 | ||
1479 | ||
1480 | static Lisp_Object | |
1481 | selection_data_to_lisp_data (display, data, size, type, format) | |
1482 | Display *display; | |
1483 | unsigned char *data; | |
1484 | Atom type; | |
1485 | int size, format; | |
1486 | { | |
5c3a351a | 1487 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1488 | |
5c3a351a | 1489 | if (type == dpyinfo->Xatom_NULL) |
ede4db72 RS |
1490 | return QNULL; |
1491 | ||
1492 | /* Convert any 8-bit data to a string, for compactness. */ | |
1493 | else if (format == 8) | |
e6c7c988 KH |
1494 | { |
1495 | Lisp_Object str; | |
f78da51e KH |
1496 | int require_encoding = 0; |
1497 | ||
d24e26b1 RS |
1498 | if ( |
1499 | #if 1 | |
1500 | 1 | |
1501 | #else | |
1502 | ! NILP (buffer_defaults.enable_multibyte_characters) | |
1503 | #endif | |
1504 | ) | |
f78da51e | 1505 | { |
5faa9b45 KH |
1506 | /* If TYPE is `TEXT' or `COMPOUND_TEXT', we should decode |
1507 | DATA to Emacs internal format because DATA may be encoded | |
1508 | in compound text format. In addtion, if TYPE is `STRING' | |
1509 | and DATA contains any 8-bit Latin-1 code, we should also | |
1510 | decode it. */ | |
1511 | if (type == dpyinfo->Xatom_TEXT | |
1512 | || type == dpyinfo->Xatom_COMPOUND_TEXT) | |
1513 | require_encoding = 1; | |
1514 | else if (type == XA_STRING) | |
f78da51e | 1515 | { |
5faa9b45 KH |
1516 | int i; |
1517 | for (i = 0; i < size; i++) | |
f78da51e | 1518 | { |
5faa9b45 KH |
1519 | if (data[i] >= 0x80) |
1520 | { | |
1521 | require_encoding = 1; | |
1522 | break; | |
1523 | } | |
f78da51e KH |
1524 | } |
1525 | } | |
1526 | } | |
1527 | if (!require_encoding) | |
061bda8d KH |
1528 | { |
1529 | str = make_unibyte_string ((char *) data, size); | |
1530 | Vlast_coding_system_used = Qraw_text; | |
1531 | } | |
e6c7c988 KH |
1532 | else |
1533 | { | |
9391d06a | 1534 | int bufsize; |
e6c7c988 KH |
1535 | unsigned char *buf; |
1536 | struct coding_system coding; | |
e6c7c988 | 1537 | |
16cd5029 KH |
1538 | if (NILP (Vnext_selection_coding_system)) |
1539 | Vnext_selection_coding_system = Vselection_coding_system; | |
2584c9ec | 1540 | setup_coding_system |
16cd5029 | 1541 | (Fcheck_coding_system(Vnext_selection_coding_system), &coding); |
9846d9db KH |
1542 | coding.src_multibyte = 0; |
1543 | coding.dst_multibyte = 1; | |
16cd5029 | 1544 | Vnext_selection_coding_system = Qnil; |
9391d06a | 1545 | coding.mode |= CODING_MODE_LAST_BLOCK; |
e6c7c988 KH |
1546 | bufsize = decoding_buffer_size (&coding, size); |
1547 | buf = (unsigned char *) xmalloc (bufsize); | |
9391d06a | 1548 | decode_coding (&coding, data, buf, size, bufsize); |
9846d9db KH |
1549 | str = make_string_from_bytes ((char *) buf, |
1550 | coding.produced_char, coding.produced); | |
4feb31b2 | 1551 | xfree (buf); |
061bda8d | 1552 | Vlast_coding_system_used = coding.symbol; |
e6c7c988 KH |
1553 | } |
1554 | return str; | |
1555 | } | |
ede4db72 RS |
1556 | /* Convert a single atom to a Lisp_Symbol. Convert a set of atoms to |
1557 | a vector of symbols. | |
1558 | */ | |
1559 | else if (type == XA_ATOM) | |
1560 | { | |
1561 | int i; | |
1562 | if (size == sizeof (Atom)) | |
5c3a351a | 1563 | return x_atom_to_symbol (dpyinfo, display, *((Atom *) data)); |
ede4db72 RS |
1564 | else |
1565 | { | |
e607a484 RS |
1566 | Lisp_Object v = Fmake_vector (make_number (size / sizeof (Atom)), |
1567 | make_number (0)); | |
ede4db72 | 1568 | for (i = 0; i < size / sizeof (Atom); i++) |
e607a484 RS |
1569 | Faset (v, make_number (i), |
1570 | x_atom_to_symbol (dpyinfo, display, ((Atom *) data) [i])); | |
ede4db72 RS |
1571 | return v; |
1572 | } | |
1573 | } | |
1574 | ||
1575 | /* Convert a single 16 or small 32 bit number to a Lisp_Int. | |
1576 | If the number is > 16 bits, convert it to a cons of integers, | |
1577 | 16 bits in each half. | |
1578 | */ | |
1579 | else if (format == 32 && size == sizeof (long)) | |
1580 | return long_to_cons (((unsigned long *) data) [0]); | |
1581 | else if (format == 16 && size == sizeof (short)) | |
1582 | return make_number ((int) (((unsigned short *) data) [0])); | |
1583 | ||
1584 | /* Convert any other kind of data to a vector of numbers, represented | |
1585 | as above (as an integer, or a cons of two 16 bit integers.) | |
1586 | */ | |
1587 | else if (format == 16) | |
1588 | { | |
1589 | int i; | |
937a3875 RS |
1590 | Lisp_Object v; |
1591 | v = Fmake_vector (make_number (size / 2), make_number (0)); | |
1592 | for (i = 0; i < size / 2; i++) | |
ede4db72 RS |
1593 | { |
1594 | int j = (int) ((unsigned short *) data) [i]; | |
e607a484 | 1595 | Faset (v, make_number (i), make_number (j)); |
ede4db72 RS |
1596 | } |
1597 | return v; | |
1598 | } | |
1599 | else | |
1600 | { | |
1601 | int i; | |
e607a484 | 1602 | Lisp_Object v = Fmake_vector (make_number (size / 4), make_number (0)); |
ede4db72 RS |
1603 | for (i = 0; i < size / 4; i++) |
1604 | { | |
1605 | unsigned long j = ((unsigned long *) data) [i]; | |
e607a484 | 1606 | Faset (v, make_number (i), long_to_cons (j)); |
ede4db72 RS |
1607 | } |
1608 | return v; | |
1609 | } | |
1610 | } | |
1611 | ||
1612 | ||
4feb31b2 | 1613 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1614 | |
ede4db72 RS |
1615 | static void |
1616 | lisp_data_to_selection_data (display, obj, | |
aca39f42 RS |
1617 | data_ret, type_ret, size_ret, |
1618 | format_ret, nofree_ret) | |
ede4db72 RS |
1619 | Display *display; |
1620 | Lisp_Object obj; | |
1621 | unsigned char **data_ret; | |
1622 | Atom *type_ret; | |
1623 | unsigned int *size_ret; | |
1624 | int *format_ret; | |
aca39f42 | 1625 | int *nofree_ret; |
ede4db72 RS |
1626 | { |
1627 | Lisp_Object type = Qnil; | |
5c3a351a | 1628 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
aca39f42 RS |
1629 | |
1630 | *nofree_ret = 0; | |
1631 | ||
8e713be6 | 1632 | if (CONSP (obj) && SYMBOLP (XCAR (obj))) |
ede4db72 | 1633 | { |
8e713be6 KR |
1634 | type = XCAR (obj); |
1635 | obj = XCDR (obj); | |
1636 | if (CONSP (obj) && NILP (XCDR (obj))) | |
1637 | obj = XCAR (obj); | |
ede4db72 RS |
1638 | } |
1639 | ||
1640 | if (EQ (obj, QNULL) || (EQ (type, QNULL))) | |
1641 | { /* This is not the same as declining */ | |
1642 | *format_ret = 32; | |
1643 | *size_ret = 0; | |
1644 | *data_ret = 0; | |
1645 | type = QNULL; | |
1646 | } | |
1647 | else if (STRINGP (obj)) | |
1648 | { | |
e6c7c988 KH |
1649 | /* Since we are now handling multilingual text, we must consider |
1650 | sending back compound text. */ | |
11270583 | 1651 | int stringp; |
9846d9db | 1652 | |
2b38b37e KH |
1653 | if (NILP (Vnext_selection_coding_system)) |
1654 | Vnext_selection_coding_system = Vselection_coding_system; | |
e6c7c988 | 1655 | |
2b38b37e KH |
1656 | *format_ret = 8; |
1657 | *data_ret = x_encode_text (obj, Vnext_selection_coding_system, | |
11270583 | 1658 | (int *) size_ret, &stringp); |
2b38b37e KH |
1659 | *nofree_ret = (*data_ret == XSTRING (obj)->data); |
1660 | if (NILP (type)) | |
11270583 | 1661 | type = (stringp ? QSTRING : QCOMPOUND_TEXT); |
2b38b37e KH |
1662 | Vlast_coding_system_used = (*nofree_ret |
1663 | ? Qraw_text | |
1664 | : Vnext_selection_coding_system); | |
1665 | Vnext_selection_coding_system = Qnil; | |
ede4db72 RS |
1666 | } |
1667 | else if (SYMBOLP (obj)) | |
1668 | { | |
1669 | *format_ret = 32; | |
1670 | *size_ret = 1; | |
1671 | *data_ret = (unsigned char *) xmalloc (sizeof (Atom) + 1); | |
1672 | (*data_ret) [sizeof (Atom)] = 0; | |
5c3a351a | 1673 | (*(Atom **) data_ret) [0] = symbol_to_x_atom (dpyinfo, display, obj); |
ede4db72 RS |
1674 | if (NILP (type)) type = QATOM; |
1675 | } | |
7da64e5c | 1676 | else if (INTEGERP (obj) |
ede4db72 RS |
1677 | && XINT (obj) < 0xFFFF |
1678 | && XINT (obj) > -0xFFFF) | |
1679 | { | |
1680 | *format_ret = 16; | |
1681 | *size_ret = 1; | |
1682 | *data_ret = (unsigned char *) xmalloc (sizeof (short) + 1); | |
1683 | (*data_ret) [sizeof (short)] = 0; | |
1684 | (*(short **) data_ret) [0] = (short) XINT (obj); | |
1685 | if (NILP (type)) type = QINTEGER; | |
1686 | } | |
a87ed99c | 1687 | else if (INTEGERP (obj) |
8e713be6 KR |
1688 | || (CONSP (obj) && INTEGERP (XCAR (obj)) |
1689 | && (INTEGERP (XCDR (obj)) | |
1690 | || (CONSP (XCDR (obj)) | |
1691 | && INTEGERP (XCAR (XCDR (obj))))))) | |
ede4db72 RS |
1692 | { |
1693 | *format_ret = 32; | |
1694 | *size_ret = 1; | |
1695 | *data_ret = (unsigned char *) xmalloc (sizeof (long) + 1); | |
1696 | (*data_ret) [sizeof (long)] = 0; | |
1697 | (*(unsigned long **) data_ret) [0] = cons_to_long (obj); | |
1698 | if (NILP (type)) type = QINTEGER; | |
1699 | } | |
1700 | else if (VECTORP (obj)) | |
1701 | { | |
1702 | /* Lisp_Vectors may represent a set of ATOMs; | |
1703 | a set of 16 or 32 bit INTEGERs; | |
1704 | or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...] | |
1705 | */ | |
1706 | int i; | |
1707 | ||
1708 | if (SYMBOLP (XVECTOR (obj)->contents [0])) | |
1709 | /* This vector is an ATOM set */ | |
1710 | { | |
1711 | if (NILP (type)) type = QATOM; | |
1712 | *size_ret = XVECTOR (obj)->size; | |
1713 | *format_ret = 32; | |
1714 | *data_ret = (unsigned char *) xmalloc ((*size_ret) * sizeof (Atom)); | |
1715 | for (i = 0; i < *size_ret; i++) | |
1716 | if (SYMBOLP (XVECTOR (obj)->contents [i])) | |
1717 | (*(Atom **) data_ret) [i] | |
5c3a351a | 1718 | = symbol_to_x_atom (dpyinfo, display, XVECTOR (obj)->contents [i]); |
ede4db72 RS |
1719 | else |
1720 | Fsignal (Qerror, /* Qselection_error */ | |
1721 | Fcons (build_string | |
1722 | ("all elements of selection vector must have same type"), | |
1723 | Fcons (obj, Qnil))); | |
1724 | } | |
1725 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1726 | else if (VECTORP (XVECTOR (obj)->contents [0])) | |
1727 | /* This vector is an ATOM_PAIR set */ | |
1728 | { | |
1729 | if (NILP (type)) type = QATOM_PAIR; | |
1730 | *size_ret = XVECTOR (obj)->size; | |
1731 | *format_ret = 32; | |
1732 | *data_ret = (unsigned char *) | |
1733 | xmalloc ((*size_ret) * sizeof (Atom) * 2); | |
1734 | for (i = 0; i < *size_ret; i++) | |
1735 | if (VECTORP (XVECTOR (obj)->contents [i])) | |
1736 | { | |
1737 | Lisp_Object pair = XVECTOR (obj)->contents [i]; | |
1738 | if (XVECTOR (pair)->size != 2) | |
1739 | Fsignal (Qerror, | |
1740 | Fcons (build_string | |
1741 | ("elements of the vector must be vectors of exactly two elements"), | |
1742 | Fcons (pair, Qnil))); | |
1743 | ||
1744 | (*(Atom **) data_ret) [i * 2] | |
5c3a351a RS |
1745 | = symbol_to_x_atom (dpyinfo, display, |
1746 | XVECTOR (pair)->contents [0]); | |
ede4db72 | 1747 | (*(Atom **) data_ret) [(i * 2) + 1] |
5c3a351a RS |
1748 | = symbol_to_x_atom (dpyinfo, display, |
1749 | XVECTOR (pair)->contents [1]); | |
ede4db72 RS |
1750 | } |
1751 | else | |
1752 | Fsignal (Qerror, | |
1753 | Fcons (build_string | |
1754 | ("all elements of the vector must be of the same type"), | |
1755 | Fcons (obj, Qnil))); | |
1756 | ||
1757 | } | |
1758 | #endif | |
1759 | else | |
1760 | /* This vector is an INTEGER set, or something like it */ | |
1761 | { | |
1762 | *size_ret = XVECTOR (obj)->size; | |
1763 | if (NILP (type)) type = QINTEGER; | |
1764 | *format_ret = 16; | |
1765 | for (i = 0; i < *size_ret; i++) | |
1766 | if (CONSP (XVECTOR (obj)->contents [i])) | |
1767 | *format_ret = 32; | |
7da64e5c | 1768 | else if (!INTEGERP (XVECTOR (obj)->contents [i])) |
ede4db72 RS |
1769 | Fsignal (Qerror, /* Qselection_error */ |
1770 | Fcons (build_string | |
1771 | ("elements of selection vector must be integers or conses of integers"), | |
1772 | Fcons (obj, Qnil))); | |
1773 | ||
1774 | *data_ret = (unsigned char *) xmalloc (*size_ret * (*format_ret/8)); | |
1775 | for (i = 0; i < *size_ret; i++) | |
1776 | if (*format_ret == 32) | |
1777 | (*((unsigned long **) data_ret)) [i] | |
1778 | = cons_to_long (XVECTOR (obj)->contents [i]); | |
1779 | else | |
1780 | (*((unsigned short **) data_ret)) [i] | |
1781 | = (unsigned short) cons_to_long (XVECTOR (obj)->contents [i]); | |
1782 | } | |
1783 | } | |
1784 | else | |
1785 | Fsignal (Qerror, /* Qselection_error */ | |
1786 | Fcons (build_string ("unrecognised selection data"), | |
1787 | Fcons (obj, Qnil))); | |
1788 | ||
5c3a351a | 1789 | *type_ret = symbol_to_x_atom (dpyinfo, display, type); |
ede4db72 RS |
1790 | } |
1791 | ||
1792 | static Lisp_Object | |
1793 | clean_local_selection_data (obj) | |
1794 | Lisp_Object obj; | |
1795 | { | |
1796 | if (CONSP (obj) | |
8e713be6 KR |
1797 | && INTEGERP (XCAR (obj)) |
1798 | && CONSP (XCDR (obj)) | |
1799 | && INTEGERP (XCAR (XCDR (obj))) | |
1800 | && NILP (XCDR (XCDR (obj)))) | |
1801 | obj = Fcons (XCAR (obj), XCDR (obj)); | |
ede4db72 RS |
1802 | |
1803 | if (CONSP (obj) | |
8e713be6 KR |
1804 | && INTEGERP (XCAR (obj)) |
1805 | && INTEGERP (XCDR (obj))) | |
ede4db72 | 1806 | { |
8e713be6 KR |
1807 | if (XINT (XCAR (obj)) == 0) |
1808 | return XCDR (obj); | |
1809 | if (XINT (XCAR (obj)) == -1) | |
1810 | return make_number (- XINT (XCDR (obj))); | |
ede4db72 RS |
1811 | } |
1812 | if (VECTORP (obj)) | |
1813 | { | |
1814 | int i; | |
1815 | int size = XVECTOR (obj)->size; | |
1816 | Lisp_Object copy; | |
1817 | if (size == 1) | |
1818 | return clean_local_selection_data (XVECTOR (obj)->contents [0]); | |
e607a484 | 1819 | copy = Fmake_vector (make_number (size), Qnil); |
ede4db72 RS |
1820 | for (i = 0; i < size; i++) |
1821 | XVECTOR (copy)->contents [i] | |
1822 | = clean_local_selection_data (XVECTOR (obj)->contents [i]); | |
1823 | return copy; | |
1824 | } | |
1825 | return obj; | |
1826 | } | |
1827 | \f | |
1828 | /* Called from XTread_socket to handle SelectionNotify events. | |
606140dd KH |
1829 | If it's the selection we are waiting for, stop waiting |
1830 | by setting the car of reading_selection_reply to non-nil. | |
1831 | We store t there if the reply is successful, lambda if not. */ | |
ede4db72 RS |
1832 | |
1833 | void | |
1834 | x_handle_selection_notify (event) | |
1835 | XSelectionEvent *event; | |
1836 | { | |
5d0ba25b | 1837 | if (event->requestor != reading_selection_window) |
ede4db72 RS |
1838 | return; |
1839 | if (event->selection != reading_which_selection) | |
1840 | return; | |
1841 | ||
8e713be6 | 1842 | XCAR (reading_selection_reply) |
606140dd | 1843 | = (event->property != 0 ? Qt : Qlambda); |
ede4db72 RS |
1844 | } |
1845 | ||
1846 | \f | |
a0d76c27 EN |
1847 | DEFUN ("x-own-selection-internal", Fx_own_selection_internal, |
1848 | Sx_own_selection_internal, 2, 2, 0, | |
ede4db72 RS |
1849 | "Assert an X selection of the given TYPE with the given VALUE.\n\ |
1850 | TYPE is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1851 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1852 | VALUE is typically a string, or a cons of two markers, but may be\n\ | |
a87ed99c | 1853 | anything that the functions on `selection-converter-alist' know about.") |
ede4db72 RS |
1854 | (selection_name, selection_value) |
1855 | Lisp_Object selection_name, selection_value; | |
1856 | { | |
703e0710 | 1857 | check_x (); |
ede4db72 | 1858 | CHECK_SYMBOL (selection_name, 0); |
606140dd | 1859 | if (NILP (selection_value)) error ("selection-value may not be nil"); |
ede4db72 RS |
1860 | x_own_selection (selection_name, selection_value); |
1861 | return selection_value; | |
1862 | } | |
1863 | ||
1864 | ||
1865 | /* Request the selection value from the owner. If we are the owner, | |
1866 | simply return our selection value. If we are not the owner, this | |
1867 | will block until all of the data has arrived. */ | |
1868 | ||
a0d76c27 EN |
1869 | DEFUN ("x-get-selection-internal", Fx_get_selection_internal, |
1870 | Sx_get_selection_internal, 2, 2, 0, | |
ede4db72 RS |
1871 | "Return text selected from some X window.\n\ |
1872 | SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1873 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
a87ed99c | 1874 | TYPE is the type of data desired, typically `STRING'.") |
ede4db72 RS |
1875 | (selection_symbol, target_type) |
1876 | Lisp_Object selection_symbol, target_type; | |
1877 | { | |
1878 | Lisp_Object val = Qnil; | |
1879 | struct gcpro gcpro1, gcpro2; | |
1880 | GCPRO2 (target_type, val); /* we store newly consed data into these */ | |
703e0710 | 1881 | check_x (); |
ede4db72 RS |
1882 | CHECK_SYMBOL (selection_symbol, 0); |
1883 | ||
1884 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1885 | if (CONSP (target_type) | |
8e713be6 | 1886 | && XCAR (target_type) == QMULTIPLE) |
ede4db72 | 1887 | { |
8e713be6 | 1888 | CHECK_VECTOR (XCDR (target_type), 0); |
ede4db72 RS |
1889 | /* So we don't destructively modify this... */ |
1890 | target_type = copy_multiple_data (target_type); | |
1891 | } | |
1892 | else | |
1893 | #endif | |
1894 | CHECK_SYMBOL (target_type, 0); | |
1895 | ||
1896 | val = x_get_local_selection (selection_symbol, target_type); | |
1897 | ||
1898 | if (NILP (val)) | |
1899 | { | |
1900 | val = x_get_foreign_selection (selection_symbol, target_type); | |
1901 | goto DONE; | |
1902 | } | |
1903 | ||
1904 | if (CONSP (val) | |
8e713be6 | 1905 | && SYMBOLP (XCAR (val))) |
ede4db72 | 1906 | { |
8e713be6 KR |
1907 | val = XCDR (val); |
1908 | if (CONSP (val) && NILP (XCDR (val))) | |
1909 | val = XCAR (val); | |
ede4db72 RS |
1910 | } |
1911 | val = clean_local_selection_data (val); | |
1912 | DONE: | |
1913 | UNGCPRO; | |
1914 | return val; | |
1915 | } | |
1916 | ||
a0d76c27 EN |
1917 | DEFUN ("x-disown-selection-internal", Fx_disown_selection_internal, |
1918 | Sx_disown_selection_internal, 1, 2, 0, | |
a87ed99c RS |
1919 | "If we own the selection SELECTION, disown it.\n\ |
1920 | Disowning it means there is no such selection.") | |
ede4db72 RS |
1921 | (selection, time) |
1922 | Lisp_Object selection; | |
1923 | Lisp_Object time; | |
1924 | { | |
ede4db72 RS |
1925 | Time timestamp; |
1926 | Atom selection_atom; | |
44d46531 | 1927 | struct selection_input_event event; |
3834c318 | 1928 | Display *display; |
5c3a351a | 1929 | struct x_display_info *dpyinfo; |
378c33ca | 1930 | struct frame *sf = SELECTED_FRAME (); |
ede4db72 | 1931 | |
703e0710 | 1932 | check_x (); |
378c33ca GM |
1933 | display = FRAME_X_DISPLAY (sf); |
1934 | dpyinfo = FRAME_X_DISPLAY_INFO (sf); | |
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 | ||
8e713be6 | 1973 | for (tail = Vselection_alist; CONSP (tail); tail = XCDR (tail)) |
a87ed99c RS |
1974 | { |
1975 | Lisp_Object elt, value; | |
8e713be6 KR |
1976 | elt = XCAR (tail); |
1977 | value = XCDR (elt); | |
1978 | if (CONSP (value) && MARKERP (XCAR (value)) | |
1979 | && XMARKER (XCAR (value))->buffer == buf) | |
1980 | Fx_disown_selection_internal (XCAR (elt), Qnil); | |
a87ed99c RS |
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 | 2018 | Display *dpy; |
378c33ca | 2019 | struct frame *sf = SELECTED_FRAME (); |
3834c318 | 2020 | |
b8c70430 | 2021 | /* It should be safe to call this before we have an X frame. */ |
378c33ca | 2022 | if (! FRAME_X_P (sf)) |
b8c70430 RS |
2023 | return Qnil; |
2024 | ||
378c33ca | 2025 | dpy = FRAME_X_DISPLAY (sf); |
ede4db72 RS |
2026 | CHECK_SYMBOL (selection, 0); |
2027 | if (!NILP (Fx_selection_owner_p (selection))) | |
2028 | return Qt; | |
356ba514 RS |
2029 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
2030 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
378c33ca | 2031 | atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (sf), 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; |
378c33ca | 2093 | struct frame *sf = SELECTED_FRAME (); |
ede4db72 | 2094 | |
703e0710 | 2095 | check_x (); |
378c33ca GM |
2096 | display = FRAME_X_DISPLAY (sf); |
2097 | dpyinfo = FRAME_X_DISPLAY_INFO (sf); | |
3834c318 | 2098 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ |
a87ed99c | 2099 | CHECK_CUT_BUFFER (buffer, 0); |
5c3a351a | 2100 | buffer_atom = symbol_to_x_atom (dpyinfo, display, buffer); |
ede4db72 RS |
2101 | |
2102 | x_get_window_property (display, window, buffer_atom, &data, &bytes, | |
2103 | &type, &format, &size, 0); | |
22e00739 RS |
2104 | if (!data || !format) |
2105 | return Qnil; | |
ede4db72 RS |
2106 | |
2107 | if (format != 8 || type != XA_STRING) | |
2108 | Fsignal (Qerror, | |
2109 | Fcons (build_string ("cut buffer doesn't contain 8-bit data"), | |
5c3a351a | 2110 | Fcons (x_atom_to_symbol (dpyinfo, display, type), |
ede4db72 RS |
2111 | Fcons (make_number (format), Qnil)))); |
2112 | ||
2113 | ret = (bytes ? make_string ((char *) data, bytes) : Qnil); | |
4feb31b2 | 2114 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 2115 | calls xmalloc itself. */ |
4feb31b2 | 2116 | xfree (data); |
ede4db72 RS |
2117 | return ret; |
2118 | } | |
2119 | ||
2120 | ||
a87ed99c RS |
2121 | DEFUN ("x-store-cut-buffer-internal", Fx_store_cut_buffer_internal, |
2122 | Sx_store_cut_buffer_internal, 2, 2, 0, | |
2123 | "Sets the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
2124 | (buffer, string) |
2125 | Lisp_Object buffer, string; | |
2126 | { | |
3834c318 | 2127 | Window window; |
ede4db72 RS |
2128 | Atom buffer_atom; |
2129 | unsigned char *data; | |
2130 | int bytes; | |
2131 | int bytes_remaining; | |
3834c318 RS |
2132 | int max_bytes; |
2133 | Display *display; | |
378c33ca | 2134 | struct frame *sf = SELECTED_FRAME (); |
ede4db72 | 2135 | |
703e0710 | 2136 | check_x (); |
378c33ca | 2137 | display = FRAME_X_DISPLAY (sf); |
3834c318 RS |
2138 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ |
2139 | ||
2140 | max_bytes = SELECTION_QUANTUM (display); | |
2141 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
2142 | max_bytes = MAX_SELECTION_QUANTUM; | |
2143 | ||
a87ed99c | 2144 | CHECK_CUT_BUFFER (buffer, 0); |
ede4db72 | 2145 | CHECK_STRING (string, 0); |
378c33ca | 2146 | buffer_atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (sf), |
5c3a351a | 2147 | display, buffer); |
ede4db72 | 2148 | data = (unsigned char *) XSTRING (string)->data; |
fc932ac6 | 2149 | bytes = STRING_BYTES (XSTRING (string)); |
ede4db72 RS |
2150 | bytes_remaining = bytes; |
2151 | ||
378c33ca | 2152 | if (! FRAME_X_DISPLAY_INFO (sf)->cut_buffers_initialized) |
04649dbc KH |
2153 | { |
2154 | initialize_cut_buffers (display, window); | |
378c33ca | 2155 | FRAME_X_DISPLAY_INFO (sf)->cut_buffers_initialized = 1; |
04649dbc | 2156 | } |
ede4db72 RS |
2157 | |
2158 | BLOCK_INPUT; | |
10608c8c RS |
2159 | |
2160 | /* Don't mess up with an empty value. */ | |
2161 | if (!bytes_remaining) | |
2162 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2163 | PropModeReplace, data, 0); | |
2164 | ||
ede4db72 RS |
2165 | while (bytes_remaining) |
2166 | { | |
2167 | int chunk = (bytes_remaining < max_bytes | |
2168 | ? bytes_remaining : max_bytes); | |
2169 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2170 | (bytes_remaining == bytes | |
2171 | ? PropModeReplace | |
2172 | : PropModeAppend), | |
2173 | data, chunk); | |
2174 | data += chunk; | |
2175 | bytes_remaining -= chunk; | |
2176 | } | |
2177 | UNBLOCK_INPUT; | |
2178 | return string; | |
2179 | } | |
2180 | ||
2181 | ||
a87ed99c RS |
2182 | DEFUN ("x-rotate-cut-buffers-internal", Fx_rotate_cut_buffers_internal, |
2183 | Sx_rotate_cut_buffers_internal, 1, 1, 0, | |
88623f1c RS |
2184 | "Rotate the values of the cut buffers by the given number of step.\n\ |
2185 | Positive means shift the values forward, negative means backward.") | |
ede4db72 RS |
2186 | (n) |
2187 | Lisp_Object n; | |
2188 | { | |
3834c318 RS |
2189 | Window window; |
2190 | Atom props[8]; | |
2191 | Display *display; | |
378c33ca | 2192 | struct frame *sf = SELECTED_FRAME (); |
ede4db72 | 2193 | |
703e0710 | 2194 | check_x (); |
378c33ca | 2195 | display = FRAME_X_DISPLAY (sf); |
3834c318 | 2196 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ |
7da64e5c | 2197 | CHECK_NUMBER (n, 0); |
3834c318 RS |
2198 | if (XINT (n) == 0) |
2199 | return n; | |
378c33ca | 2200 | if (! FRAME_X_DISPLAY_INFO (sf)->cut_buffers_initialized) |
04649dbc KH |
2201 | { |
2202 | initialize_cut_buffers (display, window); | |
378c33ca | 2203 | FRAME_X_DISPLAY_INFO (sf)->cut_buffers_initialized = 1; |
04649dbc | 2204 | } |
3834c318 | 2205 | |
ede4db72 RS |
2206 | props[0] = XA_CUT_BUFFER0; |
2207 | props[1] = XA_CUT_BUFFER1; | |
2208 | props[2] = XA_CUT_BUFFER2; | |
2209 | props[3] = XA_CUT_BUFFER3; | |
2210 | props[4] = XA_CUT_BUFFER4; | |
2211 | props[5] = XA_CUT_BUFFER5; | |
2212 | props[6] = XA_CUT_BUFFER6; | |
2213 | props[7] = XA_CUT_BUFFER7; | |
2214 | BLOCK_INPUT; | |
2215 | XRotateWindowProperties (display, window, props, 8, XINT (n)); | |
2216 | UNBLOCK_INPUT; | |
2217 | return n; | |
2218 | } | |
2219 | ||
2220 | #endif | |
2221 | \f | |
ede4db72 RS |
2222 | void |
2223 | syms_of_xselect () | |
2224 | { | |
ede4db72 RS |
2225 | defsubr (&Sx_get_selection_internal); |
2226 | defsubr (&Sx_own_selection_internal); | |
2227 | defsubr (&Sx_disown_selection_internal); | |
2228 | defsubr (&Sx_selection_owner_p); | |
2229 | defsubr (&Sx_selection_exists_p); | |
2230 | ||
2231 | #ifdef CUT_BUFFER_SUPPORT | |
a87ed99c RS |
2232 | defsubr (&Sx_get_cut_buffer_internal); |
2233 | defsubr (&Sx_store_cut_buffer_internal); | |
2234 | defsubr (&Sx_rotate_cut_buffers_internal); | |
ede4db72 RS |
2235 | #endif |
2236 | ||
2237 | reading_selection_reply = Fcons (Qnil, Qnil); | |
2238 | staticpro (&reading_selection_reply); | |
2239 | reading_selection_window = 0; | |
2240 | reading_which_selection = 0; | |
2241 | ||
2242 | property_change_wait_list = 0; | |
2f65feb6 | 2243 | prop_location_identifier = 0; |
ede4db72 RS |
2244 | property_change_reply = Fcons (Qnil, Qnil); |
2245 | staticpro (&property_change_reply); | |
2246 | ||
2247 | Vselection_alist = Qnil; | |
2248 | staticpro (&Vselection_alist); | |
2249 | ||
2250 | DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist, | |
4cf066bb | 2251 | "An alist associating X Windows selection-types with functions.\n\ |
ede4db72 RS |
2252 | These functions are called to convert the selection, with three args:\n\ |
2253 | the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2254 | a desired type to which the selection should be converted;\n\ | |
2255 | and the local selection value (whatever was given to `x-own-selection').\n\ | |
2256 | \n\ | |
2257 | The function should return the value to send to the X server\n\ | |
2258 | \(typically a string). A return value of nil\n\ | |
2259 | means that the conversion could not be done.\n\ | |
2260 | A return value which is the symbol `NULL'\n\ | |
2261 | means that a side-effect was executed,\n\ | |
2262 | and there is no meaningful selection value."); | |
2263 | Vselection_converter_alist = Qnil; | |
2264 | ||
2265 | DEFVAR_LISP ("x-lost-selection-hooks", &Vx_lost_selection_hooks, | |
4cf066bb | 2266 | "A list of functions to be called when Emacs loses an X selection.\n\ |
ede4db72 RS |
2267 | \(This happens when some other X client makes its own selection\n\ |
2268 | or when a Lisp program explicitly clears the selection.)\n\ | |
2269 | The functions are called with one argument, the selection type\n\ | |
d31b6237 | 2270 | \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD')."); |
ede4db72 RS |
2271 | Vx_lost_selection_hooks = Qnil; |
2272 | ||
2273 | DEFVAR_LISP ("x-sent-selection-hooks", &Vx_sent_selection_hooks, | |
4cf066bb | 2274 | "A list of functions to be called when Emacs answers a selection request.\n\ |
ede4db72 RS |
2275 | The functions are called with four arguments:\n\ |
2276 | - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2277 | - the selection-type which Emacs was asked to convert the\n\ | |
2278 | selection into before sending (for example, `STRING' or `LENGTH');\n\ | |
2279 | - a flag indicating success or failure for responding to the request.\n\ | |
2280 | We might have failed (and declined the request) for any number of reasons,\n\ | |
2281 | including being asked for a selection that we no longer own, or being asked\n\ | |
2282 | to convert into a type that we don't know about or that is inappropriate.\n\ | |
2283 | This hook doesn't let you change the behavior of Emacs's selection replies,\n\ | |
2284 | it merely informs you that they have happened."); | |
2285 | Vx_sent_selection_hooks = Qnil; | |
2286 | ||
93e4ce1b | 2287 | DEFVAR_LISP ("selection-coding-system", &Vselection_coding_system, |
4cf066bb RS |
2288 | "Coding system for communicating with other X clients.\n\ |
2289 | When sending or receiving text via cut_buffer, selection, and clipboard,\n\ | |
2290 | the text is encoded or decoded by this coding system.\n\ | |
aac77ff1 | 2291 | The default value is `compound-text'."); |
93e4ce1b | 2292 | Vselection_coding_system = intern ("compound-text"); |
2584c9ec | 2293 | |
16cd5029 KH |
2294 | DEFVAR_LISP ("next-selection-coding-system", &Vnext_selection_coding_system, |
2295 | "Coding system for the next communication with other X clients.\n\ | |
2296 | Usually, `selection-coding-system' is used for communicating with\n\ | |
2297 | other X clients. But, if this variable is set, it is used for the\n\ | |
2298 | next communication only. After the communication, this variable is\n\ | |
2299 | set to nil."); | |
2300 | Vnext_selection_coding_system = Qnil; | |
2301 | ||
ede4db72 | 2302 | DEFVAR_INT ("x-selection-timeout", &x_selection_timeout, |
4cf066bb | 2303 | "Number of milliseconds to wait for a selection reply.\n\ |
2a1a4c9d | 2304 | If the selection owner doesn't reply in this time, we give up.\n\ |
ede4db72 | 2305 | A value of 0 means wait as long as necessary. This is initialized from the\n\ |
80da0190 | 2306 | \"*selectionTimeout\" resource."); |
ede4db72 RS |
2307 | x_selection_timeout = 0; |
2308 | ||
2309 | QPRIMARY = intern ("PRIMARY"); staticpro (&QPRIMARY); | |
2310 | QSECONDARY = intern ("SECONDARY"); staticpro (&QSECONDARY); | |
2311 | QSTRING = intern ("STRING"); staticpro (&QSTRING); | |
2312 | QINTEGER = intern ("INTEGER"); staticpro (&QINTEGER); | |
2313 | QCLIPBOARD = intern ("CLIPBOARD"); staticpro (&QCLIPBOARD); | |
2314 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2315 | QTEXT = intern ("TEXT"); staticpro (&QTEXT); | |
e6c7c988 | 2316 | QCOMPOUND_TEXT = intern ("COMPOUND_TEXT"); staticpro (&QCOMPOUND_TEXT); |
ede4db72 RS |
2317 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); |
2318 | QDELETE = intern ("DELETE"); staticpro (&QDELETE); | |
2319 | QMULTIPLE = intern ("MULTIPLE"); staticpro (&QMULTIPLE); | |
2320 | QINCR = intern ("INCR"); staticpro (&QINCR); | |
2321 | QEMACS_TMP = intern ("_EMACS_TMP_"); staticpro (&QEMACS_TMP); | |
2322 | QTARGETS = intern ("TARGETS"); staticpro (&QTARGETS); | |
2323 | QATOM = intern ("ATOM"); staticpro (&QATOM); | |
2324 | QATOM_PAIR = intern ("ATOM_PAIR"); staticpro (&QATOM_PAIR); | |
2325 | QNULL = intern ("NULL"); staticpro (&QNULL); | |
2326 | ||
2327 | #ifdef CUT_BUFFER_SUPPORT | |
2328 | QCUT_BUFFER0 = intern ("CUT_BUFFER0"); staticpro (&QCUT_BUFFER0); | |
2329 | QCUT_BUFFER1 = intern ("CUT_BUFFER1"); staticpro (&QCUT_BUFFER1); | |
2330 | QCUT_BUFFER2 = intern ("CUT_BUFFER2"); staticpro (&QCUT_BUFFER2); | |
2331 | QCUT_BUFFER3 = intern ("CUT_BUFFER3"); staticpro (&QCUT_BUFFER3); | |
2332 | QCUT_BUFFER4 = intern ("CUT_BUFFER4"); staticpro (&QCUT_BUFFER4); | |
2333 | QCUT_BUFFER5 = intern ("CUT_BUFFER5"); staticpro (&QCUT_BUFFER5); | |
2334 | QCUT_BUFFER6 = intern ("CUT_BUFFER6"); staticpro (&QCUT_BUFFER6); | |
2335 | QCUT_BUFFER7 = intern ("CUT_BUFFER7"); staticpro (&QCUT_BUFFER7); | |
2336 | #endif | |
2337 | ||
2338 | } |