Commit | Line | Data |
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2408b3a1 | 1 | /* X Selection processing for Emacs. |
002bbc0e | 2 | Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation. |
ede4db72 RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
ede4db72 | 20 | |
c6c5df7f | 21 | |
ede4db72 RS |
22 | /* Rewritten by jwz */ |
23 | ||
18160b98 | 24 | #include <config.h> |
ede4db72 RS |
25 | #include "lisp.h" |
26 | #include "xterm.h" /* for all of the X includes */ | |
7da64e5c RS |
27 | #include "dispextern.h" /* frame.h seems to want this */ |
28 | #include "frame.h" /* Need this to get the X window of selected_frame */ | |
9ac0d9e0 | 29 | #include "blockinput.h" |
5faa9b45 | 30 | #include "buffer.h" |
e6c7c988 KH |
31 | #include "charset.h" |
32 | #include "coding.h" | |
7da64e5c | 33 | |
ede4db72 RS |
34 | #define CUT_BUFFER_SUPPORT |
35 | ||
ede4db72 RS |
36 | Lisp_Object QPRIMARY, QSECONDARY, QSTRING, QINTEGER, QCLIPBOARD, QTIMESTAMP, |
37 | QTEXT, QDELETE, QMULTIPLE, QINCR, QEMACS_TMP, QTARGETS, QATOM, QNULL, | |
38 | QATOM_PAIR; | |
39 | ||
e6c7c988 KH |
40 | Lisp_Object QCOMPOUND_TEXT; /* This is a type of selection. */ |
41 | ||
ede4db72 RS |
42 | #ifdef CUT_BUFFER_SUPPORT |
43 | Lisp_Object QCUT_BUFFER0, QCUT_BUFFER1, QCUT_BUFFER2, QCUT_BUFFER3, | |
44 | QCUT_BUFFER4, QCUT_BUFFER5, QCUT_BUFFER6, QCUT_BUFFER7; | |
45 | #endif | |
46 | ||
8f4f023f RS |
47 | static Lisp_Object Vx_lost_selection_hooks; |
48 | static Lisp_Object Vx_sent_selection_hooks; | |
2584c9ec KH |
49 | /* Coding system for communicating with other X clients via cutbuffer, |
50 | selection, and clipboard. */ | |
51 | static Lisp_Object Vclipboard_coding_system; | |
ede4db72 RS |
52 | |
53 | /* If this is a smaller number than the max-request-size of the display, | |
54 | emacs will use INCR selection transfer when the selection is larger | |
55 | than this. The max-request-size is usually around 64k, so if you want | |
56 | emacs to use incremental selection transfers when the selection is | |
57 | smaller than that, set this. I added this mostly for debugging the | |
8f4f023f | 58 | incremental transfer stuff, but it might improve server performance. */ |
ede4db72 RS |
59 | #define MAX_SELECTION_QUANTUM 0xFFFFFF |
60 | ||
c3498e64 JB |
61 | #ifdef HAVE_X11R4 |
62 | #define SELECTION_QUANTUM(dpy) ((XMaxRequestSize(dpy) << 2) - 100) | |
63 | #else | |
64 | #define SELECTION_QUANTUM(dpy) (((dpy)->max_request_size << 2) - 100) | |
65 | #endif | |
ede4db72 | 66 | |
7da64e5c | 67 | /* The timestamp of the last input event Emacs received from the X server. */ |
29674445 KH |
68 | /* Defined in keyboard.c. */ |
69 | extern unsigned long last_event_timestamp; | |
ede4db72 RS |
70 | |
71 | /* This is an association list whose elements are of the form | |
118bd841 RS |
72 | ( SELECTION-NAME SELECTION-VALUE SELECTION-TIMESTAMP FRAME) |
73 | SELECTION-NAME is a lisp symbol, whose name is the name of an X Atom. | |
74 | SELECTION-VALUE is the value that emacs owns for that selection. | |
ede4db72 | 75 | It may be any kind of Lisp object. |
118bd841 | 76 | SELECTION-TIMESTAMP is the time at which emacs began owning this selection, |
ede4db72 | 77 | as a cons of two 16-bit numbers (making a 32 bit time.) |
118bd841 RS |
78 | FRAME is the frame for which we made the selection. |
79 | If there is an entry in this alist, then it can be assumed that Emacs owns | |
ede4db72 RS |
80 | that selection. |
81 | The only (eq) parts of this list that are visible from Lisp are the | |
8f4f023f RS |
82 | selection-values. */ |
83 | static Lisp_Object Vselection_alist; | |
ede4db72 RS |
84 | |
85 | /* This is an alist whose CARs are selection-types (whose names are the same | |
86 | as the names of X Atoms) and whose CDRs are the names of Lisp functions to | |
87 | call to convert the given Emacs selection value to a string representing | |
88 | the given selection type. This is for Lisp-level extension of the emacs | |
8f4f023f RS |
89 | selection handling. */ |
90 | static Lisp_Object Vselection_converter_alist; | |
ede4db72 RS |
91 | |
92 | /* If the selection owner takes too long to reply to a selection request, | |
8f4f023f RS |
93 | we give up on it. This is in milliseconds (0 = no timeout.) */ |
94 | static int x_selection_timeout; | |
ede4db72 RS |
95 | \f |
96 | /* Utility functions */ | |
97 | ||
98 | static void lisp_data_to_selection_data (); | |
99 | static Lisp_Object selection_data_to_lisp_data (); | |
100 | static Lisp_Object x_get_window_property_as_lisp_data (); | |
101 | ||
ede4db72 RS |
102 | /* This converts a Lisp symbol to a server Atom, avoiding a server |
103 | roundtrip whenever possible. */ | |
104 | ||
105 | static Atom | |
5c3a351a RS |
106 | symbol_to_x_atom (dpyinfo, display, sym) |
107 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
108 | Display *display; |
109 | Lisp_Object sym; | |
110 | { | |
111 | Atom val; | |
112 | if (NILP (sym)) return 0; | |
113 | if (EQ (sym, QPRIMARY)) return XA_PRIMARY; | |
114 | if (EQ (sym, QSECONDARY)) return XA_SECONDARY; | |
115 | if (EQ (sym, QSTRING)) return XA_STRING; | |
116 | if (EQ (sym, QINTEGER)) return XA_INTEGER; | |
117 | if (EQ (sym, QATOM)) return XA_ATOM; | |
5c3a351a RS |
118 | if (EQ (sym, QCLIPBOARD)) return dpyinfo->Xatom_CLIPBOARD; |
119 | if (EQ (sym, QTIMESTAMP)) return dpyinfo->Xatom_TIMESTAMP; | |
120 | if (EQ (sym, QTEXT)) return dpyinfo->Xatom_TEXT; | |
e6c7c988 | 121 | if (EQ (sym, QCOMPOUND_TEXT)) return dpyinfo->Xatom_COMPOUND_TEXT; |
5c3a351a RS |
122 | if (EQ (sym, QDELETE)) return dpyinfo->Xatom_DELETE; |
123 | if (EQ (sym, QMULTIPLE)) return dpyinfo->Xatom_MULTIPLE; | |
124 | if (EQ (sym, QINCR)) return dpyinfo->Xatom_INCR; | |
125 | if (EQ (sym, QEMACS_TMP)) return dpyinfo->Xatom_EMACS_TMP; | |
126 | if (EQ (sym, QTARGETS)) return dpyinfo->Xatom_TARGETS; | |
127 | if (EQ (sym, QNULL)) return dpyinfo->Xatom_NULL; | |
ede4db72 RS |
128 | #ifdef CUT_BUFFER_SUPPORT |
129 | if (EQ (sym, QCUT_BUFFER0)) return XA_CUT_BUFFER0; | |
130 | if (EQ (sym, QCUT_BUFFER1)) return XA_CUT_BUFFER1; | |
131 | if (EQ (sym, QCUT_BUFFER2)) return XA_CUT_BUFFER2; | |
132 | if (EQ (sym, QCUT_BUFFER3)) return XA_CUT_BUFFER3; | |
133 | if (EQ (sym, QCUT_BUFFER4)) return XA_CUT_BUFFER4; | |
134 | if (EQ (sym, QCUT_BUFFER5)) return XA_CUT_BUFFER5; | |
135 | if (EQ (sym, QCUT_BUFFER6)) return XA_CUT_BUFFER6; | |
136 | if (EQ (sym, QCUT_BUFFER7)) return XA_CUT_BUFFER7; | |
137 | #endif | |
138 | if (!SYMBOLP (sym)) abort (); | |
139 | ||
140 | #if 0 | |
141 | fprintf (stderr, " XInternAtom %s\n", (char *) XSYMBOL (sym)->name->data); | |
142 | #endif | |
143 | BLOCK_INPUT; | |
144 | val = XInternAtom (display, (char *) XSYMBOL (sym)->name->data, False); | |
145 | UNBLOCK_INPUT; | |
146 | return val; | |
147 | } | |
148 | ||
149 | ||
150 | /* This converts a server Atom to a Lisp symbol, avoiding server roundtrips | |
151 | and calls to intern whenever possible. */ | |
152 | ||
153 | static Lisp_Object | |
5c3a351a RS |
154 | x_atom_to_symbol (dpyinfo, display, atom) |
155 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
156 | Display *display; |
157 | Atom atom; | |
158 | { | |
159 | char *str; | |
160 | Lisp_Object val; | |
161 | if (! atom) return Qnil; | |
7da64e5c RS |
162 | switch (atom) |
163 | { | |
164 | case XA_PRIMARY: | |
165 | return QPRIMARY; | |
166 | case XA_SECONDARY: | |
167 | return QSECONDARY; | |
168 | case XA_STRING: | |
169 | return QSTRING; | |
170 | case XA_INTEGER: | |
171 | return QINTEGER; | |
172 | case XA_ATOM: | |
173 | return QATOM; | |
ede4db72 | 174 | #ifdef CUT_BUFFER_SUPPORT |
7da64e5c RS |
175 | case XA_CUT_BUFFER0: |
176 | return QCUT_BUFFER0; | |
177 | case XA_CUT_BUFFER1: | |
178 | return QCUT_BUFFER1; | |
179 | case XA_CUT_BUFFER2: | |
180 | return QCUT_BUFFER2; | |
181 | case XA_CUT_BUFFER3: | |
182 | return QCUT_BUFFER3; | |
183 | case XA_CUT_BUFFER4: | |
184 | return QCUT_BUFFER4; | |
185 | case XA_CUT_BUFFER5: | |
186 | return QCUT_BUFFER5; | |
187 | case XA_CUT_BUFFER6: | |
188 | return QCUT_BUFFER6; | |
189 | case XA_CUT_BUFFER7: | |
190 | return QCUT_BUFFER7; | |
ede4db72 | 191 | #endif |
7da64e5c RS |
192 | } |
193 | ||
5c3a351a | 194 | if (atom == dpyinfo->Xatom_CLIPBOARD) |
7da64e5c | 195 | return QCLIPBOARD; |
5c3a351a | 196 | if (atom == dpyinfo->Xatom_TIMESTAMP) |
7da64e5c | 197 | return QTIMESTAMP; |
5c3a351a | 198 | if (atom == dpyinfo->Xatom_TEXT) |
7da64e5c | 199 | return QTEXT; |
e6c7c988 KH |
200 | if (atom == dpyinfo->Xatom_COMPOUND_TEXT) |
201 | return QCOMPOUND_TEXT; | |
5c3a351a | 202 | if (atom == dpyinfo->Xatom_DELETE) |
7da64e5c | 203 | return QDELETE; |
5c3a351a | 204 | if (atom == dpyinfo->Xatom_MULTIPLE) |
7da64e5c | 205 | return QMULTIPLE; |
5c3a351a | 206 | if (atom == dpyinfo->Xatom_INCR) |
7da64e5c | 207 | return QINCR; |
5c3a351a | 208 | if (atom == dpyinfo->Xatom_EMACS_TMP) |
7da64e5c | 209 | return QEMACS_TMP; |
5c3a351a | 210 | if (atom == dpyinfo->Xatom_TARGETS) |
7da64e5c | 211 | return QTARGETS; |
5c3a351a | 212 | if (atom == dpyinfo->Xatom_NULL) |
7da64e5c | 213 | return QNULL; |
ede4db72 RS |
214 | |
215 | BLOCK_INPUT; | |
216 | str = XGetAtomName (display, atom); | |
217 | UNBLOCK_INPUT; | |
218 | #if 0 | |
219 | fprintf (stderr, " XGetAtomName --> %s\n", str); | |
220 | #endif | |
221 | if (! str) return Qnil; | |
222 | val = intern (str); | |
223 | BLOCK_INPUT; | |
0158abbc | 224 | /* This was allocated by Xlib, so use XFree. */ |
ede4db72 RS |
225 | XFree (str); |
226 | UNBLOCK_INPUT; | |
227 | return val; | |
228 | } | |
8a89415e | 229 | \f |
ede4db72 RS |
230 | /* Do protocol to assert ourself as a selection owner. |
231 | Update the Vselection_alist so that we can reply to later requests for | |
232 | our selection. */ | |
233 | ||
234 | static void | |
235 | x_own_selection (selection_name, selection_value) | |
236 | Lisp_Object selection_name, selection_value; | |
237 | { | |
ede4db72 | 238 | Window selecting_window = FRAME_X_WINDOW (selected_frame); |
3834c318 | 239 | Display *display = FRAME_X_DISPLAY (selected_frame); |
7da64e5c | 240 | Time time = last_event_timestamp; |
ede4db72 | 241 | Atom selection_atom; |
5c3a351a | 242 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
5a499696 | 243 | int count; |
ede4db72 RS |
244 | |
245 | CHECK_SYMBOL (selection_name, 0); | |
5c3a351a | 246 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection_name); |
ede4db72 RS |
247 | |
248 | BLOCK_INPUT; | |
5a499696 | 249 | count = x_catch_errors (display); |
ede4db72 | 250 | XSetSelectionOwner (display, selection_atom, selecting_window, time); |
a7b24d46 | 251 | x_check_errors (display, "Can't set selection: %s"); |
5a499696 | 252 | x_uncatch_errors (display, count); |
ede4db72 RS |
253 | UNBLOCK_INPUT; |
254 | ||
255 | /* Now update the local cache */ | |
256 | { | |
257 | Lisp_Object selection_time; | |
258 | Lisp_Object selection_data; | |
259 | Lisp_Object prev_value; | |
260 | ||
261 | selection_time = long_to_cons ((unsigned long) time); | |
262 | selection_data = Fcons (selection_name, | |
263 | Fcons (selection_value, | |
118bd841 RS |
264 | Fcons (selection_time, |
265 | Fcons (Fselected_frame (), Qnil)))); | |
ede4db72 RS |
266 | prev_value = assq_no_quit (selection_name, Vselection_alist); |
267 | ||
268 | Vselection_alist = Fcons (selection_data, Vselection_alist); | |
269 | ||
270 | /* If we already owned the selection, remove the old selection data. | |
271 | Perhaps we should destructively modify it instead. | |
272 | Don't use Fdelq as that may QUIT. */ | |
273 | if (!NILP (prev_value)) | |
274 | { | |
275 | Lisp_Object rest; /* we know it's not the CAR, so it's easy. */ | |
276 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
277 | if (EQ (prev_value, Fcar (XCONS (rest)->cdr))) | |
278 | { | |
279 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
280 | break; | |
281 | } | |
282 | } | |
283 | } | |
284 | } | |
285 | \f | |
286 | /* Given a selection-name and desired type, look up our local copy of | |
287 | the selection value and convert it to the type. | |
288 | The value is nil or a string. | |
289 | This function is used both for remote requests | |
7da64e5c | 290 | and for local x-get-selection-internal. |
ede4db72 RS |
291 | |
292 | This calls random Lisp code, and may signal or gc. */ | |
293 | ||
294 | static Lisp_Object | |
295 | x_get_local_selection (selection_symbol, target_type) | |
296 | Lisp_Object selection_symbol, target_type; | |
297 | { | |
298 | Lisp_Object local_value; | |
299 | Lisp_Object handler_fn, value, type, check; | |
300 | int count; | |
301 | ||
302 | local_value = assq_no_quit (selection_symbol, Vselection_alist); | |
303 | ||
304 | if (NILP (local_value)) return Qnil; | |
305 | ||
306 | /* TIMESTAMP and MULTIPLE are special cases 'cause that's easiest. */ | |
307 | if (EQ (target_type, QTIMESTAMP)) | |
308 | { | |
309 | handler_fn = Qnil; | |
310 | value = XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car; | |
311 | } | |
312 | #if 0 | |
313 | else if (EQ (target_type, QDELETE)) | |
314 | { | |
315 | handler_fn = Qnil; | |
316 | Fx_disown_selection_internal | |
317 | (selection_symbol, | |
318 | XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car); | |
319 | value = QNULL; | |
320 | } | |
321 | #endif | |
322 | ||
323 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
324 | else if (CONSP (target_type) | |
325 | && XCONS (target_type)->car == QMULTIPLE) | |
326 | { | |
9d2d1dd8 KH |
327 | Lisp_Object pairs; |
328 | int size; | |
ede4db72 | 329 | int i; |
9d2d1dd8 KH |
330 | pairs = XCONS (target_type)->cdr; |
331 | size = XVECTOR (pairs)->size; | |
ede4db72 RS |
332 | /* If the target is MULTIPLE, then target_type looks like |
333 | (MULTIPLE . [[SELECTION1 TARGET1] [SELECTION2 TARGET2] ... ]) | |
334 | We modify the second element of each pair in the vector and | |
335 | return it as [[SELECTION1 <value1>] [SELECTION2 <value2>] ... ] | |
336 | */ | |
337 | for (i = 0; i < size; i++) | |
338 | { | |
9d2d1dd8 KH |
339 | Lisp_Object pair; |
340 | pair = XVECTOR (pairs)->contents [i]; | |
ede4db72 RS |
341 | XVECTOR (pair)->contents [1] |
342 | = x_get_local_selection (XVECTOR (pair)->contents [0], | |
343 | XVECTOR (pair)->contents [1]); | |
344 | } | |
345 | return pairs; | |
346 | } | |
347 | #endif | |
348 | else | |
349 | { | |
350 | /* Don't allow a quit within the converter. | |
351 | When the user types C-g, he would be surprised | |
352 | if by luck it came during a converter. */ | |
353 | count = specpdl_ptr - specpdl; | |
354 | specbind (Qinhibit_quit, Qt); | |
355 | ||
356 | CHECK_SYMBOL (target_type, 0); | |
357 | handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist)); | |
1eb4d468 RS |
358 | if (!NILP (handler_fn)) |
359 | value = call3 (handler_fn, | |
360 | selection_symbol, target_type, | |
361 | XCONS (XCONS (local_value)->cdr)->car); | |
362 | else | |
363 | value = Qnil; | |
ede4db72 RS |
364 | unbind_to (count, Qnil); |
365 | } | |
366 | ||
367 | /* Make sure this value is of a type that we could transmit | |
368 | to another X client. */ | |
a87ed99c | 369 | |
ede4db72 RS |
370 | check = value; |
371 | if (CONSP (value) | |
372 | && SYMBOLP (XCONS (value)->car)) | |
373 | type = XCONS (value)->car, | |
374 | check = XCONS (value)->cdr; | |
375 | ||
376 | if (STRINGP (check) | |
377 | || VECTORP (check) | |
378 | || SYMBOLP (check) | |
7da64e5c | 379 | || INTEGERP (check) |
ede4db72 RS |
380 | || NILP (value)) |
381 | return value; | |
a87ed99c | 382 | /* Check for a value that cons_to_long could handle. */ |
ede4db72 | 383 | else if (CONSP (check) |
7da64e5c RS |
384 | && INTEGERP (XCONS (check)->car) |
385 | && (INTEGERP (XCONS (check)->cdr) | |
ede4db72 RS |
386 | || |
387 | (CONSP (XCONS (check)->cdr) | |
7da64e5c | 388 | && INTEGERP (XCONS (XCONS (check)->cdr)->car) |
ede4db72 RS |
389 | && NILP (XCONS (XCONS (check)->cdr)->cdr)))) |
390 | return value; | |
391 | else | |
392 | return | |
393 | Fsignal (Qerror, | |
a87ed99c | 394 | Fcons (build_string ("invalid data returned by selection-conversion function"), |
ede4db72 RS |
395 | Fcons (handler_fn, Fcons (value, Qnil)))); |
396 | } | |
397 | \f | |
398 | /* Subroutines of x_reply_selection_request. */ | |
399 | ||
5d0ba25b | 400 | /* Send a SelectionNotify event to the requestor with property=None, |
ede4db72 RS |
401 | meaning we were unable to do what they wanted. */ |
402 | ||
403 | static void | |
404 | x_decline_selection_request (event) | |
405 | struct input_event *event; | |
406 | { | |
407 | XSelectionEvent reply; | |
408 | reply.type = SelectionNotify; | |
409 | reply.display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 410 | reply.requestor = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
411 | reply.selection = SELECTION_EVENT_SELECTION (event); |
412 | reply.time = SELECTION_EVENT_TIME (event); | |
413 | reply.target = SELECTION_EVENT_TARGET (event); | |
414 | reply.property = None; | |
415 | ||
416 | BLOCK_INPUT; | |
5d0ba25b | 417 | XSendEvent (reply.display, reply.requestor, False, 0L, |
7ffb2841 | 418 | (XEvent *) &reply); |
5c3a351a | 419 | XFlush (reply.display); |
ede4db72 RS |
420 | UNBLOCK_INPUT; |
421 | } | |
422 | ||
423 | /* This is the selection request currently being processed. | |
424 | It is set to zero when the request is fully processed. */ | |
425 | static struct input_event *x_selection_current_request; | |
426 | ||
427 | /* Used as an unwind-protect clause so that, if a selection-converter signals | |
2a1a4c9d | 428 | an error, we tell the requester that we were unable to do what they wanted |
ede4db72 RS |
429 | before we throw to top-level or go into the debugger or whatever. */ |
430 | ||
431 | static Lisp_Object | |
432 | x_selection_request_lisp_error (ignore) | |
433 | Lisp_Object ignore; | |
434 | { | |
435 | if (x_selection_current_request != 0) | |
436 | x_decline_selection_request (x_selection_current_request); | |
437 | return Qnil; | |
438 | } | |
439 | \f | |
d1f21a66 RS |
440 | |
441 | /* This stuff is so that INCR selections are reentrant (that is, so we can | |
442 | be servicing multiple INCR selection requests simultaneously.) I haven't | |
443 | actually tested that yet. */ | |
444 | ||
445 | /* Keep a list of the property changes that are awaited. */ | |
446 | ||
447 | struct prop_location | |
448 | { | |
449 | int identifier; | |
450 | Display *display; | |
451 | Window window; | |
452 | Atom property; | |
453 | int desired_state; | |
454 | int arrived; | |
455 | struct prop_location *next; | |
456 | }; | |
457 | ||
458 | static struct prop_location *expect_property_change (); | |
459 | static void wait_for_property_change (); | |
460 | static void unexpect_property_change (); | |
461 | static int waiting_for_other_props_on_window (); | |
462 | ||
463 | static int prop_location_identifier; | |
464 | ||
465 | static Lisp_Object property_change_reply; | |
466 | ||
467 | static struct prop_location *property_change_reply_object; | |
468 | ||
469 | static struct prop_location *property_change_wait_list; | |
55b2d45d RS |
470 | |
471 | static Lisp_Object | |
472 | queue_selection_requests_unwind (frame) | |
473 | Lisp_Object frame; | |
474 | { | |
475 | FRAME_PTR f = XFRAME (frame); | |
476 | ||
477 | if (! NILP (frame)) | |
478 | x_stop_queuing_selection_requests (FRAME_X_DISPLAY (f)); | |
ab552306 | 479 | return Qnil; |
55b2d45d RS |
480 | } |
481 | ||
482 | /* Return some frame whose display info is DPYINFO. | |
483 | Return nil if there is none. */ | |
484 | ||
485 | static Lisp_Object | |
486 | some_frame_on_display (dpyinfo) | |
487 | struct x_display_info *dpyinfo; | |
488 | { | |
489 | Lisp_Object list, frame; | |
490 | ||
491 | FOR_EACH_FRAME (list, frame) | |
492 | { | |
493 | if (FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
494 | return frame; | |
495 | } | |
496 | ||
497 | return Qnil; | |
498 | } | |
d1f21a66 | 499 | \f |
ede4db72 RS |
500 | /* Send the reply to a selection request event EVENT. |
501 | TYPE is the type of selection data requested. | |
502 | DATA and SIZE describe the data to send, already converted. | |
503 | FORMAT is the unit-size (in bits) of the data to be transmitted. */ | |
504 | ||
505 | static void | |
506 | x_reply_selection_request (event, format, data, size, type) | |
507 | struct input_event *event; | |
508 | int format, size; | |
509 | unsigned char *data; | |
510 | Atom type; | |
511 | { | |
512 | XSelectionEvent reply; | |
513 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 514 | Window window = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
515 | int bytes_remaining; |
516 | int format_bytes = format/8; | |
517 | int max_bytes = SELECTION_QUANTUM (display); | |
5c3a351a | 518 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
5a499696 | 519 | int count; |
ede4db72 RS |
520 | |
521 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
522 | max_bytes = MAX_SELECTION_QUANTUM; | |
523 | ||
524 | reply.type = SelectionNotify; | |
525 | reply.display = display; | |
5d0ba25b | 526 | reply.requestor = window; |
ede4db72 RS |
527 | reply.selection = SELECTION_EVENT_SELECTION (event); |
528 | reply.time = SELECTION_EVENT_TIME (event); | |
529 | reply.target = SELECTION_EVENT_TARGET (event); | |
530 | reply.property = SELECTION_EVENT_PROPERTY (event); | |
531 | if (reply.property == None) | |
532 | reply.property = reply.target; | |
533 | ||
534 | /* #### XChangeProperty can generate BadAlloc, and we must handle it! */ | |
afe1529d | 535 | BLOCK_INPUT; |
ad7f9d12 | 536 | count = x_catch_errors (display); |
ede4db72 | 537 | |
ede4db72 RS |
538 | /* Store the data on the requested property. |
539 | If the selection is large, only store the first N bytes of it. | |
540 | */ | |
541 | bytes_remaining = size * format_bytes; | |
542 | if (bytes_remaining <= max_bytes) | |
543 | { | |
544 | /* Send all the data at once, with minimal handshaking. */ | |
545 | #if 0 | |
546 | fprintf (stderr,"\nStoring all %d\n", bytes_remaining); | |
547 | #endif | |
548 | XChangeProperty (display, window, reply.property, type, format, | |
549 | PropModeReplace, data, size); | |
550 | /* At this point, the selection was successfully stored; ack it. */ | |
2f65feb6 | 551 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
ede4db72 RS |
552 | } |
553 | else | |
554 | { | |
555 | /* Send an INCR selection. */ | |
d1f21a66 | 556 | struct prop_location *wait_object; |
afe1529d | 557 | int had_errors; |
55b2d45d | 558 | Lisp_Object frame; |
ede4db72 | 559 | |
55b2d45d RS |
560 | frame = some_frame_on_display (dpyinfo); |
561 | ||
562 | /* If the display no longer has frames, we can't expect | |
563 | to get many more selection requests from it, so don't | |
564 | bother trying to queue them. */ | |
565 | if (!NILP (frame)) | |
566 | { | |
567 | x_start_queuing_selection_requests (display); | |
568 | ||
569 | record_unwind_protect (queue_selection_requests_unwind, | |
570 | frame); | |
571 | } | |
2f65feb6 | 572 | |
19126e11 | 573 | if (x_window_to_frame (dpyinfo, window)) /* #### debug */ |
606140dd | 574 | error ("Attempt to transfer an INCR to ourself!"); |
ede4db72 RS |
575 | #if 0 |
576 | fprintf (stderr, "\nINCR %d\n", bytes_remaining); | |
577 | #endif | |
d1f21a66 RS |
578 | wait_object = expect_property_change (display, window, reply.property, |
579 | PropertyDelete); | |
ede4db72 | 580 | |
5c3a351a | 581 | XChangeProperty (display, window, reply.property, dpyinfo->Xatom_INCR, |
55b2d45d RS |
582 | 32, PropModeReplace, |
583 | (unsigned char *) &bytes_remaining, 1); | |
ede4db72 RS |
584 | XSelectInput (display, window, PropertyChangeMask); |
585 | /* Tell 'em the INCR data is there... */ | |
55b2d45d | 586 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
5c3a351a | 587 | XFlush (display); |
afe1529d RS |
588 | |
589 | had_errors = x_had_errors_p (display); | |
2f65feb6 | 590 | UNBLOCK_INPUT; |
ede4db72 | 591 | |
2a1a4c9d | 592 | /* First, wait for the requester to ack by deleting the property. |
ede4db72 | 593 | This can run random lisp code (process handlers) or signal. */ |
afe1529d RS |
594 | if (! had_errors) |
595 | wait_for_property_change (wait_object); | |
ede4db72 RS |
596 | |
597 | while (bytes_remaining) | |
598 | { | |
599 | int i = ((bytes_remaining < max_bytes) | |
600 | ? bytes_remaining | |
601 | : max_bytes); | |
2f65feb6 RS |
602 | |
603 | BLOCK_INPUT; | |
604 | ||
d1f21a66 RS |
605 | wait_object |
606 | = expect_property_change (display, window, reply.property, | |
607 | PropertyDelete); | |
ede4db72 RS |
608 | #if 0 |
609 | fprintf (stderr," INCR adding %d\n", i); | |
610 | #endif | |
611 | /* Append the next chunk of data to the property. */ | |
612 | XChangeProperty (display, window, reply.property, type, format, | |
613 | PropModeAppend, data, i / format_bytes); | |
614 | bytes_remaining -= i; | |
615 | data += i; | |
5c3a351a | 616 | XFlush (display); |
afe1529d | 617 | had_errors = x_had_errors_p (display); |
2f65feb6 | 618 | UNBLOCK_INPUT; |
ede4db72 | 619 | |
afe1529d RS |
620 | if (had_errors) |
621 | break; | |
622 | ||
2a1a4c9d | 623 | /* Now wait for the requester to ack this chunk by deleting the |
ede4db72 RS |
624 | property. This can run random lisp code or signal. |
625 | */ | |
d1f21a66 | 626 | wait_for_property_change (wait_object); |
ede4db72 | 627 | } |
2a1a4c9d | 628 | /* Now write a zero-length chunk to the property to tell the requester |
ede4db72 RS |
629 | that we're done. */ |
630 | #if 0 | |
631 | fprintf (stderr," INCR done\n"); | |
632 | #endif | |
2f65feb6 | 633 | BLOCK_INPUT; |
ede4db72 RS |
634 | if (! waiting_for_other_props_on_window (display, window)) |
635 | XSelectInput (display, window, 0L); | |
636 | ||
637 | XChangeProperty (display, window, reply.property, type, format, | |
638 | PropModeReplace, data, 0); | |
639 | } | |
afe1529d RS |
640 | |
641 | XFlush (display); | |
5a499696 | 642 | x_uncatch_errors (display, count); |
afe1529d | 643 | UNBLOCK_INPUT; |
ede4db72 RS |
644 | } |
645 | \f | |
646 | /* Handle a SelectionRequest event EVENT. | |
647 | This is called from keyboard.c when such an event is found in the queue. */ | |
648 | ||
649 | void | |
650 | x_handle_selection_request (event) | |
651 | struct input_event *event; | |
652 | { | |
653 | struct gcpro gcpro1, gcpro2, gcpro3; | |
9d2d1dd8 | 654 | Lisp_Object local_selection_data; |
ede4db72 | 655 | Lisp_Object selection_symbol; |
9d2d1dd8 KH |
656 | Lisp_Object target_symbol; |
657 | Lisp_Object converted_selection; | |
ede4db72 | 658 | Time local_selection_time; |
9d2d1dd8 | 659 | Lisp_Object successful_p; |
ede4db72 | 660 | int count; |
5c3a351a RS |
661 | struct x_display_info *dpyinfo |
662 | = x_display_info_for_display (SELECTION_EVENT_DISPLAY (event)); | |
ede4db72 | 663 | |
9d2d1dd8 KH |
664 | local_selection_data = Qnil; |
665 | target_symbol = Qnil; | |
666 | converted_selection = Qnil; | |
667 | successful_p = Qnil; | |
668 | ||
ede4db72 RS |
669 | GCPRO3 (local_selection_data, converted_selection, target_symbol); |
670 | ||
5c3a351a RS |
671 | selection_symbol = x_atom_to_symbol (dpyinfo, |
672 | SELECTION_EVENT_DISPLAY (event), | |
ede4db72 RS |
673 | SELECTION_EVENT_SELECTION (event)); |
674 | ||
675 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
ede4db72 RS |
676 | |
677 | if (NILP (local_selection_data)) | |
678 | { | |
679 | /* Someone asked for the selection, but we don't have it any more. | |
680 | */ | |
681 | x_decline_selection_request (event); | |
682 | goto DONE; | |
683 | } | |
684 | ||
685 | local_selection_time = (Time) | |
686 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
687 | ||
688 | if (SELECTION_EVENT_TIME (event) != CurrentTime | |
7da64e5c | 689 | && local_selection_time > SELECTION_EVENT_TIME (event)) |
ede4db72 RS |
690 | { |
691 | /* Someone asked for the selection, and we have one, but not the one | |
692 | they're looking for. | |
693 | */ | |
694 | x_decline_selection_request (event); | |
695 | goto DONE; | |
696 | } | |
697 | ||
698 | count = specpdl_ptr - specpdl; | |
699 | x_selection_current_request = event; | |
700 | record_unwind_protect (x_selection_request_lisp_error, Qnil); | |
701 | ||
5c3a351a | 702 | target_symbol = x_atom_to_symbol (dpyinfo, SELECTION_EVENT_DISPLAY (event), |
ede4db72 RS |
703 | SELECTION_EVENT_TARGET (event)); |
704 | ||
705 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
706 | if (EQ (target_symbol, QMULTIPLE)) | |
707 | target_symbol = fetch_multiple_target (event); | |
708 | #endif | |
709 | ||
710 | /* Convert lisp objects back into binary data */ | |
711 | ||
712 | converted_selection | |
713 | = x_get_local_selection (selection_symbol, target_symbol); | |
714 | ||
715 | if (! NILP (converted_selection)) | |
716 | { | |
717 | unsigned char *data; | |
718 | unsigned int size; | |
719 | int format; | |
720 | Atom type; | |
aca39f42 RS |
721 | int nofree; |
722 | ||
2f65feb6 RS |
723 | lisp_data_to_selection_data (SELECTION_EVENT_DISPLAY (event), |
724 | converted_selection, | |
aca39f42 | 725 | &data, &type, &size, &format, &nofree); |
ede4db72 RS |
726 | |
727 | x_reply_selection_request (event, format, data, size, type); | |
728 | successful_p = Qt; | |
729 | ||
730 | /* Indicate we have successfully processed this event. */ | |
7da64e5c | 731 | x_selection_current_request = 0; |
ede4db72 | 732 | |
4feb31b2 | 733 | /* Use xfree, not XFree, because lisp_data_to_selection_data |
0158abbc | 734 | calls xmalloc itself. */ |
aca39f42 | 735 | if (!nofree) |
4feb31b2 | 736 | xfree (data); |
ede4db72 RS |
737 | } |
738 | unbind_to (count, Qnil); | |
739 | ||
740 | DONE: | |
741 | ||
742 | UNGCPRO; | |
743 | ||
744 | /* Let random lisp code notice that the selection has been asked for. */ | |
745 | { | |
9d2d1dd8 KH |
746 | Lisp_Object rest; |
747 | rest = Vx_sent_selection_hooks; | |
ede4db72 RS |
748 | if (!EQ (rest, Qunbound)) |
749 | for (; CONSP (rest); rest = Fcdr (rest)) | |
750 | call3 (Fcar (rest), selection_symbol, target_symbol, successful_p); | |
751 | } | |
752 | } | |
753 | \f | |
754 | /* Handle a SelectionClear event EVENT, which indicates that some other | |
755 | client cleared out our previously asserted selection. | |
756 | This is called from keyboard.c when such an event is found in the queue. */ | |
757 | ||
758 | void | |
759 | x_handle_selection_clear (event) | |
760 | struct input_event *event; | |
761 | { | |
762 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
763 | Atom selection = SELECTION_EVENT_SELECTION (event); | |
764 | Time changed_owner_time = SELECTION_EVENT_TIME (event); | |
765 | ||
766 | Lisp_Object selection_symbol, local_selection_data; | |
767 | Time local_selection_time; | |
5c3a351a | 768 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 769 | |
5c3a351a | 770 | selection_symbol = x_atom_to_symbol (dpyinfo, display, selection); |
ede4db72 RS |
771 | |
772 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
773 | ||
774 | /* Well, we already believe that we don't own it, so that's just fine. */ | |
775 | if (NILP (local_selection_data)) return; | |
776 | ||
777 | local_selection_time = (Time) | |
778 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
779 | ||
780 | /* This SelectionClear is for a selection that we no longer own, so we can | |
781 | disregard it. (That is, we have reasserted the selection since this | |
782 | request was generated.) */ | |
783 | ||
784 | if (changed_owner_time != CurrentTime | |
785 | && local_selection_time > changed_owner_time) | |
786 | return; | |
787 | ||
788 | /* Otherwise, we're really honest and truly being told to drop it. | |
789 | Don't use Fdelq as that may QUIT;. */ | |
790 | ||
791 | if (EQ (local_selection_data, Fcar (Vselection_alist))) | |
792 | Vselection_alist = Fcdr (Vselection_alist); | |
793 | else | |
794 | { | |
795 | Lisp_Object rest; | |
796 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
797 | if (EQ (local_selection_data, Fcar (XCONS (rest)->cdr))) | |
798 | { | |
799 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
800 | break; | |
801 | } | |
802 | } | |
803 | ||
804 | /* Let random lisp code notice that the selection has been stolen. */ | |
805 | ||
806 | { | |
d1f21a66 RS |
807 | Lisp_Object rest; |
808 | rest = Vx_lost_selection_hooks; | |
ede4db72 | 809 | if (!EQ (rest, Qunbound)) |
d1f21a66 RS |
810 | { |
811 | for (; CONSP (rest); rest = Fcdr (rest)) | |
812 | call1 (Fcar (rest), selection_symbol); | |
7c6b2ea4 | 813 | prepare_menu_bars (); |
d1f21a66 RS |
814 | redisplay_preserve_echo_area (); |
815 | } | |
ede4db72 RS |
816 | } |
817 | } | |
818 | ||
118bd841 RS |
819 | /* Clear all selections that were made from frame F. |
820 | We do this when about to delete a frame. */ | |
821 | ||
822 | void | |
823 | x_clear_frame_selections (f) | |
824 | FRAME_PTR f; | |
825 | { | |
826 | Lisp_Object frame; | |
827 | Lisp_Object rest; | |
828 | ||
90851bbe | 829 | XSETFRAME (frame, f); |
118bd841 RS |
830 | |
831 | /* Otherwise, we're really honest and truly being told to drop it. | |
832 | Don't use Fdelq as that may QUIT;. */ | |
833 | ||
0d199f9c RS |
834 | /* Delete elements from the beginning of Vselection_alist. */ |
835 | while (!NILP (Vselection_alist) | |
836 | && EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (Vselection_alist))))))) | |
837 | { | |
838 | /* Let random Lisp code notice that the selection has been stolen. */ | |
839 | Lisp_Object hooks, selection_symbol; | |
840 | ||
841 | hooks = Vx_lost_selection_hooks; | |
842 | selection_symbol = Fcar (Fcar (Vselection_alist)); | |
843 | ||
844 | if (!EQ (hooks, Qunbound)) | |
845 | { | |
846 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
847 | call1 (Fcar (hooks), selection_symbol); | |
996b804d MB |
848 | #if 0 /* This can crash when deleting a frame |
849 | from x_connection_closed. Anyway, it seems unnecessary; | |
850 | something else should cause a redisplay. */ | |
0d199f9c | 851 | redisplay_preserve_echo_area (); |
996b804d | 852 | #endif |
0d199f9c RS |
853 | } |
854 | ||
855 | Vselection_alist = Fcdr (Vselection_alist); | |
856 | } | |
857 | ||
858 | /* Delete elements after the beginning of Vselection_alist. */ | |
118bd841 RS |
859 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) |
860 | if (EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (XCONS (rest)->cdr))))))) | |
861 | { | |
862 | /* Let random Lisp code notice that the selection has been stolen. */ | |
863 | Lisp_Object hooks, selection_symbol; | |
864 | ||
865 | hooks = Vx_lost_selection_hooks; | |
0d199f9c | 866 | selection_symbol = Fcar (Fcar (XCONS (rest)->cdr)); |
118bd841 RS |
867 | |
868 | if (!EQ (hooks, Qunbound)) | |
869 | { | |
870 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
871 | call1 (Fcar (hooks), selection_symbol); | |
996b804d | 872 | #if 0 /* See above */ |
118bd841 | 873 | redisplay_preserve_echo_area (); |
996b804d | 874 | #endif |
118bd841 RS |
875 | } |
876 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
877 | break; | |
878 | } | |
879 | } | |
ede4db72 | 880 | \f |
ede4db72 RS |
881 | /* Nonzero if any properties for DISPLAY and WINDOW |
882 | are on the list of what we are waiting for. */ | |
883 | ||
884 | static int | |
885 | waiting_for_other_props_on_window (display, window) | |
886 | Display *display; | |
887 | Window window; | |
888 | { | |
889 | struct prop_location *rest = property_change_wait_list; | |
890 | while (rest) | |
891 | if (rest->display == display && rest->window == window) | |
892 | return 1; | |
893 | else | |
894 | rest = rest->next; | |
895 | return 0; | |
896 | } | |
897 | ||
898 | /* Add an entry to the list of property changes we are waiting for. | |
899 | DISPLAY, WINDOW, PROPERTY, STATE describe what we will wait for. | |
900 | The return value is a number that uniquely identifies | |
901 | this awaited property change. */ | |
902 | ||
d1f21a66 | 903 | static struct prop_location * |
ede4db72 RS |
904 | expect_property_change (display, window, property, state) |
905 | Display *display; | |
906 | Window window; | |
6c070502 | 907 | Atom property; |
ede4db72 RS |
908 | int state; |
909 | { | |
910 | struct prop_location *pl | |
911 | = (struct prop_location *) xmalloc (sizeof (struct prop_location)); | |
2f65feb6 | 912 | pl->identifier = ++prop_location_identifier; |
ede4db72 RS |
913 | pl->display = display; |
914 | pl->window = window; | |
915 | pl->property = property; | |
916 | pl->desired_state = state; | |
917 | pl->next = property_change_wait_list; | |
d1f21a66 | 918 | pl->arrived = 0; |
ede4db72 | 919 | property_change_wait_list = pl; |
d1f21a66 | 920 | return pl; |
ede4db72 RS |
921 | } |
922 | ||
923 | /* Delete an entry from the list of property changes we are waiting for. | |
2f65feb6 | 924 | IDENTIFIER is the number that uniquely identifies the entry. */ |
ede4db72 RS |
925 | |
926 | static void | |
d1f21a66 RS |
927 | unexpect_property_change (location) |
928 | struct prop_location *location; | |
ede4db72 RS |
929 | { |
930 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
931 | while (rest) | |
932 | { | |
d1f21a66 | 933 | if (rest == location) |
ede4db72 RS |
934 | { |
935 | if (prev) | |
936 | prev->next = rest->next; | |
937 | else | |
938 | property_change_wait_list = rest->next; | |
4feb31b2 | 939 | xfree (rest); |
ede4db72 RS |
940 | return; |
941 | } | |
942 | prev = rest; | |
943 | rest = rest->next; | |
944 | } | |
945 | } | |
946 | ||
2f65feb6 RS |
947 | /* Remove the property change expectation element for IDENTIFIER. */ |
948 | ||
949 | static Lisp_Object | |
950 | wait_for_property_change_unwind (identifierval) | |
951 | Lisp_Object identifierval; | |
952 | { | |
c4898489 KH |
953 | unexpect_property_change ((struct prop_location *) |
954 | (XFASTINT (XCONS (identifierval)->car) << 16 | |
955 | | XFASTINT (XCONS (identifierval)->cdr))); | |
ab552306 | 956 | return Qnil; |
2f65feb6 RS |
957 | } |
958 | ||
ede4db72 | 959 | /* Actually wait for a property change. |
2f65feb6 | 960 | IDENTIFIER should be the value that expect_property_change returned. */ |
ede4db72 RS |
961 | |
962 | static void | |
d1f21a66 RS |
963 | wait_for_property_change (location) |
964 | struct prop_location *location; | |
ede4db72 | 965 | { |
2f65feb6 RS |
966 | int secs, usecs; |
967 | int count = specpdl_ptr - specpdl; | |
d1f21a66 RS |
968 | Lisp_Object tem; |
969 | ||
c4898489 KH |
970 | tem = Fcons (Qnil, Qnil); |
971 | XSETFASTINT (XCONS (tem)->car, (EMACS_UINT)location >> 16); | |
972 | XSETFASTINT (XCONS (tem)->cdr, (EMACS_UINT)location & 0xffff); | |
2f65feb6 RS |
973 | |
974 | /* Make sure to do unexpect_property_change if we quit or err. */ | |
d1f21a66 | 975 | record_unwind_protect (wait_for_property_change_unwind, tem); |
2f65feb6 | 976 | |
ede4db72 | 977 | XCONS (property_change_reply)->car = Qnil; |
2f65feb6 | 978 | |
afe1529d RS |
979 | property_change_reply_object = location; |
980 | /* If the event we are waiting for arrives beyond here, it will set | |
981 | property_change_reply, because property_change_reply_object says so. */ | |
d1f21a66 RS |
982 | if (! location->arrived) |
983 | { | |
d1f21a66 RS |
984 | secs = x_selection_timeout / 1000; |
985 | usecs = (x_selection_timeout % 1000) * 1000; | |
986 | wait_reading_process_input (secs, usecs, property_change_reply, 0); | |
987 | ||
988 | if (NILP (XCONS (property_change_reply)->car)) | |
606140dd | 989 | error ("Timed out waiting for property-notify event"); |
d1f21a66 | 990 | } |
2f65feb6 RS |
991 | |
992 | unbind_to (count, Qnil); | |
ede4db72 RS |
993 | } |
994 | ||
995 | /* Called from XTread_socket in response to a PropertyNotify event. */ | |
996 | ||
997 | void | |
998 | x_handle_property_notify (event) | |
999 | XPropertyEvent *event; | |
1000 | { | |
1001 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
1002 | while (rest) | |
1003 | { | |
1004 | if (rest->property == event->atom | |
1005 | && rest->window == event->window | |
1006 | && rest->display == event->display | |
1007 | && rest->desired_state == event->state) | |
1008 | { | |
1009 | #if 0 | |
1010 | fprintf (stderr, "Saw expected prop-%s on %s\n", | |
1011 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a | 1012 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, event->display, |
ede4db72 RS |
1013 | event->atom)) |
1014 | ->name->data); | |
1015 | #endif | |
1016 | ||
d1f21a66 RS |
1017 | rest->arrived = 1; |
1018 | ||
ede4db72 RS |
1019 | /* If this is the one wait_for_property_change is waiting for, |
1020 | tell it to wake up. */ | |
d1f21a66 | 1021 | if (rest == property_change_reply_object) |
ede4db72 RS |
1022 | XCONS (property_change_reply)->car = Qt; |
1023 | ||
1024 | if (prev) | |
1025 | prev->next = rest->next; | |
1026 | else | |
1027 | property_change_wait_list = rest->next; | |
4feb31b2 | 1028 | xfree (rest); |
ede4db72 RS |
1029 | return; |
1030 | } | |
1031 | prev = rest; | |
1032 | rest = rest->next; | |
1033 | } | |
1034 | #if 0 | |
1035 | fprintf (stderr, "Saw UNexpected prop-%s on %s\n", | |
1036 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a RS |
1037 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, |
1038 | event->display, event->atom)) | |
ede4db72 RS |
1039 | ->name->data); |
1040 | #endif | |
1041 | } | |
1042 | ||
1043 | ||
1044 | \f | |
1045 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1046 | ||
1047 | static Lisp_Object | |
1048 | fetch_multiple_target (event) | |
1049 | XSelectionRequestEvent *event; | |
1050 | { | |
1051 | Display *display = event->display; | |
5d0ba25b | 1052 | Window window = event->requestor; |
ede4db72 RS |
1053 | Atom target = event->target; |
1054 | Atom selection_atom = event->selection; | |
1055 | int result; | |
1056 | ||
1057 | return | |
1058 | Fcons (QMULTIPLE, | |
1059 | x_get_window_property_as_lisp_data (display, window, target, | |
1060 | QMULTIPLE, selection_atom)); | |
1061 | } | |
1062 | ||
1063 | static Lisp_Object | |
1064 | copy_multiple_data (obj) | |
1065 | Lisp_Object obj; | |
1066 | { | |
1067 | Lisp_Object vec; | |
1068 | int i; | |
1069 | int size; | |
1070 | if (CONSP (obj)) | |
1071 | return Fcons (XCONS (obj)->car, copy_multiple_data (XCONS (obj)->cdr)); | |
1072 | ||
1073 | CHECK_VECTOR (obj, 0); | |
1074 | vec = Fmake_vector (size = XVECTOR (obj)->size, Qnil); | |
1075 | for (i = 0; i < size; i++) | |
1076 | { | |
1077 | Lisp_Object vec2 = XVECTOR (obj)->contents [i]; | |
1078 | CHECK_VECTOR (vec2, 0); | |
1079 | if (XVECTOR (vec2)->size != 2) | |
1080 | /* ??? Confusing error message */ | |
1081 | Fsignal (Qerror, Fcons (build_string ("vectors must be of length 2"), | |
1082 | Fcons (vec2, Qnil))); | |
1083 | XVECTOR (vec)->contents [i] = Fmake_vector (2, Qnil); | |
1084 | XVECTOR (XVECTOR (vec)->contents [i])->contents [0] | |
1085 | = XVECTOR (vec2)->contents [0]; | |
1086 | XVECTOR (XVECTOR (vec)->contents [i])->contents [1] | |
1087 | = XVECTOR (vec2)->contents [1]; | |
1088 | } | |
1089 | return vec; | |
1090 | } | |
1091 | ||
1092 | #endif | |
1093 | ||
1094 | \f | |
1095 | /* Variables for communication with x_handle_selection_notify. */ | |
1096 | static Atom reading_which_selection; | |
1097 | static Lisp_Object reading_selection_reply; | |
1098 | static Window reading_selection_window; | |
1099 | ||
1100 | /* Do protocol to read selection-data from the server. | |
1101 | Converts this to Lisp data and returns it. */ | |
1102 | ||
1103 | static Lisp_Object | |
1104 | x_get_foreign_selection (selection_symbol, target_type) | |
1105 | Lisp_Object selection_symbol, target_type; | |
1106 | { | |
5d0ba25b | 1107 | Window requestor_window = FRAME_X_WINDOW (selected_frame); |
3834c318 | 1108 | Display *display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1109 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
5d0ba25b | 1110 | Time requestor_time = last_event_timestamp; |
5c3a351a RS |
1111 | Atom target_property = dpyinfo->Xatom_EMACS_TMP; |
1112 | Atom selection_atom = symbol_to_x_atom (dpyinfo, display, selection_symbol); | |
ede4db72 | 1113 | Atom type_atom; |
80da0190 | 1114 | int secs, usecs; |
5a499696 | 1115 | int count; |
55b2d45d | 1116 | Lisp_Object frame; |
ede4db72 RS |
1117 | |
1118 | if (CONSP (target_type)) | |
5c3a351a | 1119 | type_atom = symbol_to_x_atom (dpyinfo, display, XCONS (target_type)->car); |
ede4db72 | 1120 | else |
5c3a351a | 1121 | type_atom = symbol_to_x_atom (dpyinfo, display, target_type); |
ede4db72 RS |
1122 | |
1123 | BLOCK_INPUT; | |
5a499696 | 1124 | count = x_catch_errors (display); |
ede4db72 | 1125 | XConvertSelection (display, selection_atom, type_atom, target_property, |
5d0ba25b | 1126 | requestor_window, requestor_time); |
5c3a351a | 1127 | XFlush (display); |
ede4db72 RS |
1128 | |
1129 | /* Prepare to block until the reply has been read. */ | |
5d0ba25b | 1130 | reading_selection_window = requestor_window; |
ede4db72 RS |
1131 | reading_which_selection = selection_atom; |
1132 | XCONS (reading_selection_reply)->car = Qnil; | |
55b2d45d RS |
1133 | |
1134 | frame = some_frame_on_display (dpyinfo); | |
1135 | ||
1136 | /* If the display no longer has frames, we can't expect | |
1137 | to get many more selection requests from it, so don't | |
1138 | bother trying to queue them. */ | |
1139 | if (!NILP (frame)) | |
1140 | { | |
1141 | x_start_queuing_selection_requests (display); | |
1142 | ||
1143 | record_unwind_protect (queue_selection_requests_unwind, | |
1144 | frame); | |
1145 | } | |
ede4db72 RS |
1146 | UNBLOCK_INPUT; |
1147 | ||
80da0190 RS |
1148 | /* This allows quits. Also, don't wait forever. */ |
1149 | secs = x_selection_timeout / 1000; | |
1150 | usecs = (x_selection_timeout % 1000) * 1000; | |
1151 | wait_reading_process_input (secs, usecs, reading_selection_reply, 0); | |
ede4db72 | 1152 | |
7c6b2ea4 | 1153 | BLOCK_INPUT; |
a7b24d46 | 1154 | x_check_errors (display, "Cannot get selection: %s"); |
5a499696 | 1155 | x_uncatch_errors (display, count); |
7c6b2ea4 RS |
1156 | UNBLOCK_INPUT; |
1157 | ||
ede4db72 | 1158 | if (NILP (XCONS (reading_selection_reply)->car)) |
606140dd KH |
1159 | error ("Timed out waiting for reply from selection owner"); |
1160 | if (EQ (XCONS (reading_selection_reply)->car, Qlambda)) | |
1161 | error ("No `%s' selection", XSYMBOL (selection_symbol)->name->data); | |
ede4db72 RS |
1162 | |
1163 | /* Otherwise, the selection is waiting for us on the requested property. */ | |
1164 | return | |
5d0ba25b | 1165 | x_get_window_property_as_lisp_data (display, requestor_window, |
ede4db72 RS |
1166 | target_property, target_type, |
1167 | selection_atom); | |
1168 | } | |
1169 | \f | |
1170 | /* Subroutines of x_get_window_property_as_lisp_data */ | |
1171 | ||
4feb31b2 | 1172 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1173 | |
ede4db72 RS |
1174 | static void |
1175 | x_get_window_property (display, window, property, data_ret, bytes_ret, | |
1176 | actual_type_ret, actual_format_ret, actual_size_ret, | |
1177 | delete_p) | |
1178 | Display *display; | |
1179 | Window window; | |
1180 | Atom property; | |
1181 | unsigned char **data_ret; | |
1182 | int *bytes_ret; | |
1183 | Atom *actual_type_ret; | |
1184 | int *actual_format_ret; | |
1185 | unsigned long *actual_size_ret; | |
1186 | int delete_p; | |
1187 | { | |
1188 | int total_size; | |
1189 | unsigned long bytes_remaining; | |
1190 | int offset = 0; | |
1191 | unsigned char *tmp_data = 0; | |
1192 | int result; | |
1193 | int buffer_size = SELECTION_QUANTUM (display); | |
1194 | if (buffer_size > MAX_SELECTION_QUANTUM) buffer_size = MAX_SELECTION_QUANTUM; | |
1195 | ||
1196 | BLOCK_INPUT; | |
1197 | /* First probe the thing to find out how big it is. */ | |
1198 | result = XGetWindowProperty (display, window, property, | |
137edb72 | 1199 | 0L, 0L, False, AnyPropertyType, |
ede4db72 RS |
1200 | actual_type_ret, actual_format_ret, |
1201 | actual_size_ret, | |
1202 | &bytes_remaining, &tmp_data); | |
ede4db72 RS |
1203 | if (result != Success) |
1204 | { | |
2f65feb6 | 1205 | UNBLOCK_INPUT; |
ede4db72 RS |
1206 | *data_ret = 0; |
1207 | *bytes_ret = 0; | |
1208 | return; | |
1209 | } | |
0158abbc RS |
1210 | /* This was allocated by Xlib, so use XFree. */ |
1211 | XFree ((char *) tmp_data); | |
ede4db72 RS |
1212 | |
1213 | if (*actual_type_ret == None || *actual_format_ret == 0) | |
1214 | { | |
2f65feb6 | 1215 | UNBLOCK_INPUT; |
ede4db72 RS |
1216 | return; |
1217 | } | |
1218 | ||
1219 | total_size = bytes_remaining + 1; | |
1220 | *data_ret = (unsigned char *) xmalloc (total_size); | |
1221 | ||
2a1a4c9d | 1222 | /* Now read, until we've gotten it all. */ |
ede4db72 RS |
1223 | while (bytes_remaining) |
1224 | { | |
1225 | #if 0 | |
1226 | int last = bytes_remaining; | |
1227 | #endif | |
1228 | result | |
1229 | = XGetWindowProperty (display, window, property, | |
137edb72 | 1230 | (long)offset/4, (long)buffer_size/4, |
2f65feb6 | 1231 | False, |
ede4db72 RS |
1232 | AnyPropertyType, |
1233 | actual_type_ret, actual_format_ret, | |
1234 | actual_size_ret, &bytes_remaining, &tmp_data); | |
1235 | #if 0 | |
1236 | fprintf (stderr, "<< read %d\n", last-bytes_remaining); | |
1237 | #endif | |
1238 | /* If this doesn't return Success at this point, it means that | |
1239 | some clod deleted the selection while we were in the midst of | |
1240 | reading it. Deal with that, I guess.... | |
1241 | */ | |
1242 | if (result != Success) break; | |
1243 | *actual_size_ret *= *actual_format_ret / 8; | |
1244 | bcopy (tmp_data, (*data_ret) + offset, *actual_size_ret); | |
1245 | offset += *actual_size_ret; | |
0158abbc RS |
1246 | /* This was allocated by Xlib, so use XFree. */ |
1247 | XFree ((char *) tmp_data); | |
ede4db72 | 1248 | } |
2f65feb6 | 1249 | |
5c3a351a | 1250 | XFlush (display); |
ede4db72 RS |
1251 | UNBLOCK_INPUT; |
1252 | *bytes_ret = offset; | |
1253 | } | |
1254 | \f | |
4feb31b2 | 1255 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1256 | |
ede4db72 RS |
1257 | static void |
1258 | receive_incremental_selection (display, window, property, target_type, | |
1259 | min_size_bytes, data_ret, size_bytes_ret, | |
1260 | type_ret, format_ret, size_ret) | |
1261 | Display *display; | |
1262 | Window window; | |
1263 | Atom property; | |
1264 | Lisp_Object target_type; /* for error messages only */ | |
1265 | unsigned int min_size_bytes; | |
1266 | unsigned char **data_ret; | |
1267 | int *size_bytes_ret; | |
1268 | Atom *type_ret; | |
1269 | unsigned long *size_ret; | |
1270 | int *format_ret; | |
1271 | { | |
1272 | int offset = 0; | |
d1f21a66 | 1273 | struct prop_location *wait_object; |
ede4db72 RS |
1274 | *size_bytes_ret = min_size_bytes; |
1275 | *data_ret = (unsigned char *) xmalloc (*size_bytes_ret); | |
1276 | #if 0 | |
1277 | fprintf (stderr, "\nread INCR %d\n", min_size_bytes); | |
1278 | #endif | |
2f65feb6 RS |
1279 | |
1280 | /* At this point, we have read an INCR property. | |
1281 | Delete the property to ack it. | |
1282 | (But first, prepare to receive the next event in this handshake.) | |
ede4db72 RS |
1283 | |
1284 | Now, we must loop, waiting for the sending window to put a value on | |
1285 | that property, then reading the property, then deleting it to ack. | |
1286 | We are done when the sender places a property of length 0. | |
1287 | */ | |
2f65feb6 RS |
1288 | BLOCK_INPUT; |
1289 | XSelectInput (display, window, STANDARD_EVENT_SET | PropertyChangeMask); | |
1290 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1291 | wait_object = expect_property_change (display, window, property, |
1292 | PropertyNewValue); | |
5c3a351a | 1293 | XFlush (display); |
2f65feb6 RS |
1294 | UNBLOCK_INPUT; |
1295 | ||
ede4db72 RS |
1296 | while (1) |
1297 | { | |
1298 | unsigned char *tmp_data; | |
1299 | int tmp_size_bytes; | |
d1f21a66 | 1300 | wait_for_property_change (wait_object); |
ede4db72 | 1301 | /* expect it again immediately, because x_get_window_property may |
2a1a4c9d | 1302 | .. no it won't, I don't get it. |
ede4db72 RS |
1303 | .. Ok, I get it now, the Xt code that implements INCR is broken. |
1304 | */ | |
ede4db72 RS |
1305 | x_get_window_property (display, window, property, |
1306 | &tmp_data, &tmp_size_bytes, | |
1307 | type_ret, format_ret, size_ret, 1); | |
1308 | ||
1309 | if (tmp_size_bytes == 0) /* we're done */ | |
1310 | { | |
1311 | #if 0 | |
1312 | fprintf (stderr, " read INCR done\n"); | |
1313 | #endif | |
2f65feb6 RS |
1314 | if (! waiting_for_other_props_on_window (display, window)) |
1315 | XSelectInput (display, window, STANDARD_EVENT_SET); | |
d1f21a66 | 1316 | unexpect_property_change (wait_object); |
4feb31b2 | 1317 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1318 | calls xmalloc itself. */ |
4feb31b2 | 1319 | if (tmp_data) xfree (tmp_data); |
ede4db72 RS |
1320 | break; |
1321 | } | |
2f65feb6 RS |
1322 | |
1323 | BLOCK_INPUT; | |
1324 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1325 | wait_object = expect_property_change (display, window, property, |
1326 | PropertyNewValue); | |
5c3a351a | 1327 | XFlush (display); |
2f65feb6 RS |
1328 | UNBLOCK_INPUT; |
1329 | ||
ede4db72 RS |
1330 | #if 0 |
1331 | fprintf (stderr, " read INCR %d\n", tmp_size_bytes); | |
1332 | #endif | |
1333 | if (*size_bytes_ret < offset + tmp_size_bytes) | |
1334 | { | |
1335 | #if 0 | |
1336 | fprintf (stderr, " read INCR realloc %d -> %d\n", | |
1337 | *size_bytes_ret, offset + tmp_size_bytes); | |
1338 | #endif | |
1339 | *size_bytes_ret = offset + tmp_size_bytes; | |
1340 | *data_ret = (unsigned char *) xrealloc (*data_ret, *size_bytes_ret); | |
1341 | } | |
018cfa07 | 1342 | bcopy (tmp_data, (*data_ret) + offset, tmp_size_bytes); |
ede4db72 | 1343 | offset += tmp_size_bytes; |
4feb31b2 | 1344 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1345 | calls xmalloc itself. */ |
4feb31b2 | 1346 | xfree (tmp_data); |
ede4db72 RS |
1347 | } |
1348 | } | |
1349 | \f | |
1350 | /* Once a requested selection is "ready" (we got a SelectionNotify event), | |
1351 | fetch value from property PROPERTY of X window WINDOW on display DISPLAY. | |
1352 | TARGET_TYPE and SELECTION_ATOM are used in error message if this fails. */ | |
1353 | ||
1354 | static Lisp_Object | |
1355 | x_get_window_property_as_lisp_data (display, window, property, target_type, | |
1356 | selection_atom) | |
1357 | Display *display; | |
1358 | Window window; | |
1359 | Atom property; | |
1360 | Lisp_Object target_type; /* for error messages only */ | |
1361 | Atom selection_atom; /* for error messages only */ | |
1362 | { | |
1363 | Atom actual_type; | |
1364 | int actual_format; | |
1365 | unsigned long actual_size; | |
1366 | unsigned char *data = 0; | |
1367 | int bytes = 0; | |
1368 | Lisp_Object val; | |
5c3a351a | 1369 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 RS |
1370 | |
1371 | x_get_window_property (display, window, property, &data, &bytes, | |
1372 | &actual_type, &actual_format, &actual_size, 1); | |
1373 | if (! data) | |
1374 | { | |
1375 | int there_is_a_selection_owner; | |
1376 | BLOCK_INPUT; | |
1377 | there_is_a_selection_owner | |
1378 | = XGetSelectionOwner (display, selection_atom); | |
1379 | UNBLOCK_INPUT; | |
5a499696 RS |
1380 | Fsignal (Qerror, |
1381 | there_is_a_selection_owner | |
1382 | ? Fcons (build_string ("selection owner couldn't convert"), | |
ede4db72 RS |
1383 | actual_type |
1384 | ? Fcons (target_type, | |
5c3a351a RS |
1385 | Fcons (x_atom_to_symbol (dpyinfo, display, |
1386 | actual_type), | |
ede4db72 RS |
1387 | Qnil)) |
1388 | : Fcons (target_type, Qnil)) | |
5a499696 RS |
1389 | : Fcons (build_string ("no selection"), |
1390 | Fcons (x_atom_to_symbol (dpyinfo, display, | |
1391 | selection_atom), | |
1392 | Qnil))); | |
ede4db72 RS |
1393 | } |
1394 | ||
5c3a351a | 1395 | if (actual_type == dpyinfo->Xatom_INCR) |
ede4db72 RS |
1396 | { |
1397 | /* That wasn't really the data, just the beginning. */ | |
1398 | ||
1399 | unsigned int min_size_bytes = * ((unsigned int *) data); | |
1400 | BLOCK_INPUT; | |
4feb31b2 | 1401 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1402 | calls xmalloc itself. */ |
4feb31b2 | 1403 | xfree ((char *) data); |
ede4db72 RS |
1404 | UNBLOCK_INPUT; |
1405 | receive_incremental_selection (display, window, property, target_type, | |
1406 | min_size_bytes, &data, &bytes, | |
1407 | &actual_type, &actual_format, | |
1408 | &actual_size); | |
1409 | } | |
1410 | ||
2f65feb6 RS |
1411 | BLOCK_INPUT; |
1412 | XDeleteProperty (display, window, property); | |
5c3a351a | 1413 | XFlush (display); |
2f65feb6 RS |
1414 | UNBLOCK_INPUT; |
1415 | ||
ede4db72 RS |
1416 | /* It's been read. Now convert it to a lisp object in some semi-rational |
1417 | manner. */ | |
1418 | val = selection_data_to_lisp_data (display, data, bytes, | |
1419 | actual_type, actual_format); | |
1420 | ||
4feb31b2 | 1421 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1422 | calls xmalloc itself. */ |
4feb31b2 | 1423 | xfree ((char *) data); |
ede4db72 RS |
1424 | return val; |
1425 | } | |
1426 | \f | |
1427 | /* These functions convert from the selection data read from the server into | |
1428 | something that we can use from Lisp, and vice versa. | |
1429 | ||
1430 | Type: Format: Size: Lisp Type: | |
1431 | ----- ------- ----- ----------- | |
1432 | * 8 * String | |
1433 | ATOM 32 1 Symbol | |
1434 | ATOM 32 > 1 Vector of Symbols | |
1435 | * 16 1 Integer | |
1436 | * 16 > 1 Vector of Integers | |
1437 | * 32 1 if <=16 bits: Integer | |
1438 | if > 16 bits: Cons of top16, bot16 | |
1439 | * 32 > 1 Vector of the above | |
1440 | ||
1441 | When converting a Lisp number to C, it is assumed to be of format 16 if | |
1442 | it is an integer, and of format 32 if it is a cons of two integers. | |
1443 | ||
1444 | When converting a vector of numbers from Lisp to C, it is assumed to be | |
1445 | of format 16 if every element in the vector is an integer, and is assumed | |
1446 | to be of format 32 if any element is a cons of two integers. | |
1447 | ||
1448 | When converting an object to C, it may be of the form (SYMBOL . <data>) | |
1449 | where SYMBOL is what we should claim that the type is. Format and | |
1450 | representation are as above. */ | |
1451 | ||
1452 | ||
1453 | ||
1454 | static Lisp_Object | |
1455 | selection_data_to_lisp_data (display, data, size, type, format) | |
1456 | Display *display; | |
1457 | unsigned char *data; | |
1458 | Atom type; | |
1459 | int size, format; | |
1460 | { | |
5c3a351a | 1461 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1462 | |
5c3a351a | 1463 | if (type == dpyinfo->Xatom_NULL) |
ede4db72 RS |
1464 | return QNULL; |
1465 | ||
1466 | /* Convert any 8-bit data to a string, for compactness. */ | |
1467 | else if (format == 8) | |
e6c7c988 KH |
1468 | { |
1469 | Lisp_Object str; | |
f78da51e KH |
1470 | int require_encoding = 0; |
1471 | ||
5faa9b45 | 1472 | if (! NILP (buffer_defaults.enable_multibyte_characters)) |
f78da51e | 1473 | { |
5faa9b45 KH |
1474 | /* If TYPE is `TEXT' or `COMPOUND_TEXT', we should decode |
1475 | DATA to Emacs internal format because DATA may be encoded | |
1476 | in compound text format. In addtion, if TYPE is `STRING' | |
1477 | and DATA contains any 8-bit Latin-1 code, we should also | |
1478 | decode it. */ | |
1479 | if (type == dpyinfo->Xatom_TEXT | |
1480 | || type == dpyinfo->Xatom_COMPOUND_TEXT) | |
1481 | require_encoding = 1; | |
1482 | else if (type == XA_STRING) | |
f78da51e | 1483 | { |
5faa9b45 KH |
1484 | int i; |
1485 | for (i = 0; i < size; i++) | |
f78da51e | 1486 | { |
5faa9b45 KH |
1487 | if (data[i] >= 0x80) |
1488 | { | |
1489 | require_encoding = 1; | |
1490 | break; | |
1491 | } | |
f78da51e KH |
1492 | } |
1493 | } | |
1494 | } | |
1495 | if (!require_encoding) | |
e6c7c988 KH |
1496 | str = make_string ((char *) data, size); |
1497 | else | |
1498 | { | |
e6c7c988 KH |
1499 | int bufsize, dummy; |
1500 | unsigned char *buf; | |
1501 | struct coding_system coding; | |
e6c7c988 | 1502 | |
2584c9ec KH |
1503 | setup_coding_system |
1504 | (Fcheck_coding_system(Vclipboard_coding_system), &coding); | |
1505 | coding.last_block = 1; | |
e6c7c988 KH |
1506 | bufsize = decoding_buffer_size (&coding, size); |
1507 | buf = (unsigned char *) xmalloc (bufsize); | |
1508 | size = decode_coding (&coding, data, buf, size, bufsize, &dummy); | |
1509 | str = make_string ((char *) buf, size); | |
4feb31b2 | 1510 | xfree (buf); |
e6c7c988 KH |
1511 | } |
1512 | return str; | |
1513 | } | |
ede4db72 RS |
1514 | /* Convert a single atom to a Lisp_Symbol. Convert a set of atoms to |
1515 | a vector of symbols. | |
1516 | */ | |
1517 | else if (type == XA_ATOM) | |
1518 | { | |
1519 | int i; | |
1520 | if (size == sizeof (Atom)) | |
5c3a351a | 1521 | return x_atom_to_symbol (dpyinfo, display, *((Atom *) data)); |
ede4db72 RS |
1522 | else |
1523 | { | |
e607a484 RS |
1524 | Lisp_Object v = Fmake_vector (make_number (size / sizeof (Atom)), |
1525 | make_number (0)); | |
ede4db72 | 1526 | for (i = 0; i < size / sizeof (Atom); i++) |
e607a484 RS |
1527 | Faset (v, make_number (i), |
1528 | x_atom_to_symbol (dpyinfo, display, ((Atom *) data) [i])); | |
ede4db72 RS |
1529 | return v; |
1530 | } | |
1531 | } | |
1532 | ||
1533 | /* Convert a single 16 or small 32 bit number to a Lisp_Int. | |
1534 | If the number is > 16 bits, convert it to a cons of integers, | |
1535 | 16 bits in each half. | |
1536 | */ | |
1537 | else if (format == 32 && size == sizeof (long)) | |
1538 | return long_to_cons (((unsigned long *) data) [0]); | |
1539 | else if (format == 16 && size == sizeof (short)) | |
1540 | return make_number ((int) (((unsigned short *) data) [0])); | |
1541 | ||
1542 | /* Convert any other kind of data to a vector of numbers, represented | |
1543 | as above (as an integer, or a cons of two 16 bit integers.) | |
1544 | */ | |
1545 | else if (format == 16) | |
1546 | { | |
1547 | int i; | |
937a3875 RS |
1548 | Lisp_Object v; |
1549 | v = Fmake_vector (make_number (size / 2), make_number (0)); | |
1550 | for (i = 0; i < size / 2; i++) | |
ede4db72 RS |
1551 | { |
1552 | int j = (int) ((unsigned short *) data) [i]; | |
e607a484 | 1553 | Faset (v, make_number (i), make_number (j)); |
ede4db72 RS |
1554 | } |
1555 | return v; | |
1556 | } | |
1557 | else | |
1558 | { | |
1559 | int i; | |
e607a484 | 1560 | Lisp_Object v = Fmake_vector (make_number (size / 4), make_number (0)); |
ede4db72 RS |
1561 | for (i = 0; i < size / 4; i++) |
1562 | { | |
1563 | unsigned long j = ((unsigned long *) data) [i]; | |
e607a484 | 1564 | Faset (v, make_number (i), long_to_cons (j)); |
ede4db72 RS |
1565 | } |
1566 | return v; | |
1567 | } | |
1568 | } | |
1569 | ||
1570 | ||
4feb31b2 | 1571 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1572 | |
ede4db72 RS |
1573 | static void |
1574 | lisp_data_to_selection_data (display, obj, | |
aca39f42 RS |
1575 | data_ret, type_ret, size_ret, |
1576 | format_ret, nofree_ret) | |
ede4db72 RS |
1577 | Display *display; |
1578 | Lisp_Object obj; | |
1579 | unsigned char **data_ret; | |
1580 | Atom *type_ret; | |
1581 | unsigned int *size_ret; | |
1582 | int *format_ret; | |
aca39f42 | 1583 | int *nofree_ret; |
ede4db72 RS |
1584 | { |
1585 | Lisp_Object type = Qnil; | |
5c3a351a | 1586 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
aca39f42 RS |
1587 | |
1588 | *nofree_ret = 0; | |
1589 | ||
ede4db72 RS |
1590 | if (CONSP (obj) && SYMBOLP (XCONS (obj)->car)) |
1591 | { | |
1592 | type = XCONS (obj)->car; | |
1593 | obj = XCONS (obj)->cdr; | |
1594 | if (CONSP (obj) && NILP (XCONS (obj)->cdr)) | |
1595 | obj = XCONS (obj)->car; | |
1596 | } | |
1597 | ||
1598 | if (EQ (obj, QNULL) || (EQ (type, QNULL))) | |
1599 | { /* This is not the same as declining */ | |
1600 | *format_ret = 32; | |
1601 | *size_ret = 0; | |
1602 | *data_ret = 0; | |
1603 | type = QNULL; | |
1604 | } | |
1605 | else if (STRINGP (obj)) | |
1606 | { | |
e6c7c988 KH |
1607 | /* Since we are now handling multilingual text, we must consider |
1608 | sending back compound text. */ | |
fb5e77f7 | 1609 | int charsets[MAX_CHARSET + 1]; |
e6c7c988 KH |
1610 | int num; |
1611 | ||
ede4db72 RS |
1612 | *format_ret = 8; |
1613 | *size_ret = XSTRING (obj)->size; | |
aca39f42 | 1614 | *data_ret = XSTRING (obj)->data; |
fb5e77f7 | 1615 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
5faa9b45 KH |
1616 | num = ((*size_ret <= 1 /* Check the possibility of short cut. */ |
1617 | || NILP (buffer_defaults.enable_multibyte_characters)) | |
e6c7c988 | 1618 | ? 0 |
f78da51e | 1619 | : find_charset_in_str (*data_ret, *size_ret, charsets, Qnil)); |
e6c7c988 KH |
1620 | |
1621 | if (!num || (num == 1 && charsets[CHARSET_ASCII])) | |
1622 | { | |
1623 | /* No multibyte character in OBJ. We need not encode it. */ | |
1624 | *nofree_ret = 1; | |
1625 | if (NILP (type)) type = QSTRING; | |
1626 | } | |
1627 | else | |
1628 | { | |
1629 | /* We must encode contents of OBJ to compound text format. | |
1630 | The format is compatible with what the target `STRING' | |
1631 | expects if OBJ contains only ASCII and Latin-1 | |
1632 | characters. */ | |
1633 | int bufsize, dummy; | |
1634 | unsigned char *buf; | |
1635 | struct coding_system coding; | |
e6c7c988 | 1636 | |
2584c9ec KH |
1637 | setup_coding_system |
1638 | (Fcheck_coding_system (Vclipboard_coding_system), &coding); | |
e6c7c988 KH |
1639 | coding.last_block = 1; |
1640 | bufsize = encoding_buffer_size (&coding, *size_ret); | |
1641 | buf = (unsigned char *) xmalloc (bufsize); | |
1642 | *size_ret = encode_coding (&coding, *data_ret, buf, | |
1643 | *size_ret, bufsize, &dummy); | |
1644 | *data_ret = buf; | |
5faa9b45 | 1645 | if (charsets[charset_latin_iso8859_1] |
e6c7c988 KH |
1646 | && (num == 1 || (num == 2 && charsets[CHARSET_ASCII]))) |
1647 | { | |
1648 | /* Ok, we can return it as `STRING'. */ | |
1649 | if (NILP (type)) type = QSTRING; | |
1650 | } | |
1651 | else | |
1652 | { | |
1653 | /* We must return it as `COMPOUND_TEXT'. */ | |
1654 | if (NILP (type)) type = QCOMPOUND_TEXT; | |
1655 | } | |
1656 | } | |
ede4db72 RS |
1657 | } |
1658 | else if (SYMBOLP (obj)) | |
1659 | { | |
1660 | *format_ret = 32; | |
1661 | *size_ret = 1; | |
1662 | *data_ret = (unsigned char *) xmalloc (sizeof (Atom) + 1); | |
1663 | (*data_ret) [sizeof (Atom)] = 0; | |
5c3a351a | 1664 | (*(Atom **) data_ret) [0] = symbol_to_x_atom (dpyinfo, display, obj); |
ede4db72 RS |
1665 | if (NILP (type)) type = QATOM; |
1666 | } | |
7da64e5c | 1667 | else if (INTEGERP (obj) |
ede4db72 RS |
1668 | && XINT (obj) < 0xFFFF |
1669 | && XINT (obj) > -0xFFFF) | |
1670 | { | |
1671 | *format_ret = 16; | |
1672 | *size_ret = 1; | |
1673 | *data_ret = (unsigned char *) xmalloc (sizeof (short) + 1); | |
1674 | (*data_ret) [sizeof (short)] = 0; | |
1675 | (*(short **) data_ret) [0] = (short) XINT (obj); | |
1676 | if (NILP (type)) type = QINTEGER; | |
1677 | } | |
a87ed99c RS |
1678 | else if (INTEGERP (obj) |
1679 | || (CONSP (obj) && INTEGERP (XCONS (obj)->car) | |
1680 | && (INTEGERP (XCONS (obj)->cdr) | |
1681 | || (CONSP (XCONS (obj)->cdr) | |
1682 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car))))) | |
ede4db72 RS |
1683 | { |
1684 | *format_ret = 32; | |
1685 | *size_ret = 1; | |
1686 | *data_ret = (unsigned char *) xmalloc (sizeof (long) + 1); | |
1687 | (*data_ret) [sizeof (long)] = 0; | |
1688 | (*(unsigned long **) data_ret) [0] = cons_to_long (obj); | |
1689 | if (NILP (type)) type = QINTEGER; | |
1690 | } | |
1691 | else if (VECTORP (obj)) | |
1692 | { | |
1693 | /* Lisp_Vectors may represent a set of ATOMs; | |
1694 | a set of 16 or 32 bit INTEGERs; | |
1695 | or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...] | |
1696 | */ | |
1697 | int i; | |
1698 | ||
1699 | if (SYMBOLP (XVECTOR (obj)->contents [0])) | |
1700 | /* This vector is an ATOM set */ | |
1701 | { | |
1702 | if (NILP (type)) type = QATOM; | |
1703 | *size_ret = XVECTOR (obj)->size; | |
1704 | *format_ret = 32; | |
1705 | *data_ret = (unsigned char *) xmalloc ((*size_ret) * sizeof (Atom)); | |
1706 | for (i = 0; i < *size_ret; i++) | |
1707 | if (SYMBOLP (XVECTOR (obj)->contents [i])) | |
1708 | (*(Atom **) data_ret) [i] | |
5c3a351a | 1709 | = symbol_to_x_atom (dpyinfo, display, XVECTOR (obj)->contents [i]); |
ede4db72 RS |
1710 | else |
1711 | Fsignal (Qerror, /* Qselection_error */ | |
1712 | Fcons (build_string | |
1713 | ("all elements of selection vector must have same type"), | |
1714 | Fcons (obj, Qnil))); | |
1715 | } | |
1716 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1717 | else if (VECTORP (XVECTOR (obj)->contents [0])) | |
1718 | /* This vector is an ATOM_PAIR set */ | |
1719 | { | |
1720 | if (NILP (type)) type = QATOM_PAIR; | |
1721 | *size_ret = XVECTOR (obj)->size; | |
1722 | *format_ret = 32; | |
1723 | *data_ret = (unsigned char *) | |
1724 | xmalloc ((*size_ret) * sizeof (Atom) * 2); | |
1725 | for (i = 0; i < *size_ret; i++) | |
1726 | if (VECTORP (XVECTOR (obj)->contents [i])) | |
1727 | { | |
1728 | Lisp_Object pair = XVECTOR (obj)->contents [i]; | |
1729 | if (XVECTOR (pair)->size != 2) | |
1730 | Fsignal (Qerror, | |
1731 | Fcons (build_string | |
1732 | ("elements of the vector must be vectors of exactly two elements"), | |
1733 | Fcons (pair, Qnil))); | |
1734 | ||
1735 | (*(Atom **) data_ret) [i * 2] | |
5c3a351a RS |
1736 | = symbol_to_x_atom (dpyinfo, display, |
1737 | XVECTOR (pair)->contents [0]); | |
ede4db72 | 1738 | (*(Atom **) data_ret) [(i * 2) + 1] |
5c3a351a RS |
1739 | = symbol_to_x_atom (dpyinfo, display, |
1740 | XVECTOR (pair)->contents [1]); | |
ede4db72 RS |
1741 | } |
1742 | else | |
1743 | Fsignal (Qerror, | |
1744 | Fcons (build_string | |
1745 | ("all elements of the vector must be of the same type"), | |
1746 | Fcons (obj, Qnil))); | |
1747 | ||
1748 | } | |
1749 | #endif | |
1750 | else | |
1751 | /* This vector is an INTEGER set, or something like it */ | |
1752 | { | |
1753 | *size_ret = XVECTOR (obj)->size; | |
1754 | if (NILP (type)) type = QINTEGER; | |
1755 | *format_ret = 16; | |
1756 | for (i = 0; i < *size_ret; i++) | |
1757 | if (CONSP (XVECTOR (obj)->contents [i])) | |
1758 | *format_ret = 32; | |
7da64e5c | 1759 | else if (!INTEGERP (XVECTOR (obj)->contents [i])) |
ede4db72 RS |
1760 | Fsignal (Qerror, /* Qselection_error */ |
1761 | Fcons (build_string | |
1762 | ("elements of selection vector must be integers or conses of integers"), | |
1763 | Fcons (obj, Qnil))); | |
1764 | ||
1765 | *data_ret = (unsigned char *) xmalloc (*size_ret * (*format_ret/8)); | |
1766 | for (i = 0; i < *size_ret; i++) | |
1767 | if (*format_ret == 32) | |
1768 | (*((unsigned long **) data_ret)) [i] | |
1769 | = cons_to_long (XVECTOR (obj)->contents [i]); | |
1770 | else | |
1771 | (*((unsigned short **) data_ret)) [i] | |
1772 | = (unsigned short) cons_to_long (XVECTOR (obj)->contents [i]); | |
1773 | } | |
1774 | } | |
1775 | else | |
1776 | Fsignal (Qerror, /* Qselection_error */ | |
1777 | Fcons (build_string ("unrecognised selection data"), | |
1778 | Fcons (obj, Qnil))); | |
1779 | ||
5c3a351a | 1780 | *type_ret = symbol_to_x_atom (dpyinfo, display, type); |
ede4db72 RS |
1781 | } |
1782 | ||
1783 | static Lisp_Object | |
1784 | clean_local_selection_data (obj) | |
1785 | Lisp_Object obj; | |
1786 | { | |
1787 | if (CONSP (obj) | |
7da64e5c | 1788 | && INTEGERP (XCONS (obj)->car) |
ede4db72 | 1789 | && CONSP (XCONS (obj)->cdr) |
7da64e5c | 1790 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car) |
ede4db72 RS |
1791 | && NILP (XCONS (XCONS (obj)->cdr)->cdr)) |
1792 | obj = Fcons (XCONS (obj)->car, XCONS (obj)->cdr); | |
1793 | ||
1794 | if (CONSP (obj) | |
7da64e5c RS |
1795 | && INTEGERP (XCONS (obj)->car) |
1796 | && INTEGERP (XCONS (obj)->cdr)) | |
ede4db72 RS |
1797 | { |
1798 | if (XINT (XCONS (obj)->car) == 0) | |
1799 | return XCONS (obj)->cdr; | |
1800 | if (XINT (XCONS (obj)->car) == -1) | |
1801 | return make_number (- XINT (XCONS (obj)->cdr)); | |
1802 | } | |
1803 | if (VECTORP (obj)) | |
1804 | { | |
1805 | int i; | |
1806 | int size = XVECTOR (obj)->size; | |
1807 | Lisp_Object copy; | |
1808 | if (size == 1) | |
1809 | return clean_local_selection_data (XVECTOR (obj)->contents [0]); | |
e607a484 | 1810 | copy = Fmake_vector (make_number (size), Qnil); |
ede4db72 RS |
1811 | for (i = 0; i < size; i++) |
1812 | XVECTOR (copy)->contents [i] | |
1813 | = clean_local_selection_data (XVECTOR (obj)->contents [i]); | |
1814 | return copy; | |
1815 | } | |
1816 | return obj; | |
1817 | } | |
1818 | \f | |
1819 | /* Called from XTread_socket to handle SelectionNotify events. | |
606140dd KH |
1820 | If it's the selection we are waiting for, stop waiting |
1821 | by setting the car of reading_selection_reply to non-nil. | |
1822 | We store t there if the reply is successful, lambda if not. */ | |
ede4db72 RS |
1823 | |
1824 | void | |
1825 | x_handle_selection_notify (event) | |
1826 | XSelectionEvent *event; | |
1827 | { | |
5d0ba25b | 1828 | if (event->requestor != reading_selection_window) |
ede4db72 RS |
1829 | return; |
1830 | if (event->selection != reading_which_selection) | |
1831 | return; | |
1832 | ||
606140dd KH |
1833 | XCONS (reading_selection_reply)->car |
1834 | = (event->property != 0 ? Qt : Qlambda); | |
ede4db72 RS |
1835 | } |
1836 | ||
1837 | \f | |
a0d76c27 EN |
1838 | DEFUN ("x-own-selection-internal", Fx_own_selection_internal, |
1839 | Sx_own_selection_internal, 2, 2, 0, | |
ede4db72 RS |
1840 | "Assert an X selection of the given TYPE with the given VALUE.\n\ |
1841 | TYPE is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1842 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1843 | VALUE is typically a string, or a cons of two markers, but may be\n\ | |
a87ed99c | 1844 | anything that the functions on `selection-converter-alist' know about.") |
ede4db72 RS |
1845 | (selection_name, selection_value) |
1846 | Lisp_Object selection_name, selection_value; | |
1847 | { | |
703e0710 | 1848 | check_x (); |
ede4db72 | 1849 | CHECK_SYMBOL (selection_name, 0); |
606140dd | 1850 | if (NILP (selection_value)) error ("selection-value may not be nil"); |
ede4db72 RS |
1851 | x_own_selection (selection_name, selection_value); |
1852 | return selection_value; | |
1853 | } | |
1854 | ||
1855 | ||
1856 | /* Request the selection value from the owner. If we are the owner, | |
1857 | simply return our selection value. If we are not the owner, this | |
1858 | will block until all of the data has arrived. */ | |
1859 | ||
a0d76c27 EN |
1860 | DEFUN ("x-get-selection-internal", Fx_get_selection_internal, |
1861 | Sx_get_selection_internal, 2, 2, 0, | |
ede4db72 RS |
1862 | "Return text selected from some X window.\n\ |
1863 | SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1864 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
a87ed99c | 1865 | TYPE is the type of data desired, typically `STRING'.") |
ede4db72 RS |
1866 | (selection_symbol, target_type) |
1867 | Lisp_Object selection_symbol, target_type; | |
1868 | { | |
1869 | Lisp_Object val = Qnil; | |
1870 | struct gcpro gcpro1, gcpro2; | |
1871 | GCPRO2 (target_type, val); /* we store newly consed data into these */ | |
703e0710 | 1872 | check_x (); |
ede4db72 RS |
1873 | CHECK_SYMBOL (selection_symbol, 0); |
1874 | ||
1875 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1876 | if (CONSP (target_type) | |
1877 | && XCONS (target_type)->car == QMULTIPLE) | |
1878 | { | |
1879 | CHECK_VECTOR (XCONS (target_type)->cdr, 0); | |
1880 | /* So we don't destructively modify this... */ | |
1881 | target_type = copy_multiple_data (target_type); | |
1882 | } | |
1883 | else | |
1884 | #endif | |
1885 | CHECK_SYMBOL (target_type, 0); | |
1886 | ||
1887 | val = x_get_local_selection (selection_symbol, target_type); | |
1888 | ||
1889 | if (NILP (val)) | |
1890 | { | |
1891 | val = x_get_foreign_selection (selection_symbol, target_type); | |
1892 | goto DONE; | |
1893 | } | |
1894 | ||
1895 | if (CONSP (val) | |
1896 | && SYMBOLP (XCONS (val)->car)) | |
1897 | { | |
1898 | val = XCONS (val)->cdr; | |
1899 | if (CONSP (val) && NILP (XCONS (val)->cdr)) | |
1900 | val = XCONS (val)->car; | |
1901 | } | |
1902 | val = clean_local_selection_data (val); | |
1903 | DONE: | |
1904 | UNGCPRO; | |
1905 | return val; | |
1906 | } | |
1907 | ||
a0d76c27 EN |
1908 | DEFUN ("x-disown-selection-internal", Fx_disown_selection_internal, |
1909 | Sx_disown_selection_internal, 1, 2, 0, | |
a87ed99c RS |
1910 | "If we own the selection SELECTION, disown it.\n\ |
1911 | Disowning it means there is no such selection.") | |
ede4db72 RS |
1912 | (selection, time) |
1913 | Lisp_Object selection; | |
1914 | Lisp_Object time; | |
1915 | { | |
ede4db72 RS |
1916 | Time timestamp; |
1917 | Atom selection_atom; | |
1918 | XSelectionClearEvent event; | |
3834c318 | 1919 | Display *display; |
5c3a351a | 1920 | struct x_display_info *dpyinfo; |
ede4db72 | 1921 | |
703e0710 | 1922 | check_x (); |
3834c318 | 1923 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1924 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
ede4db72 RS |
1925 | CHECK_SYMBOL (selection, 0); |
1926 | if (NILP (time)) | |
7da64e5c | 1927 | timestamp = last_event_timestamp; |
ede4db72 RS |
1928 | else |
1929 | timestamp = cons_to_long (time); | |
1930 | ||
1931 | if (NILP (assq_no_quit (selection, Vselection_alist))) | |
1932 | return Qnil; /* Don't disown the selection when we're not the owner. */ | |
1933 | ||
5c3a351a | 1934 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection); |
ede4db72 RS |
1935 | |
1936 | BLOCK_INPUT; | |
1937 | XSetSelectionOwner (display, selection_atom, None, timestamp); | |
1938 | UNBLOCK_INPUT; | |
1939 | ||
eb8c3be9 | 1940 | /* It doesn't seem to be guaranteed that a SelectionClear event will be |
ede4db72 RS |
1941 | generated for a window which owns the selection when that window sets |
1942 | the selection owner to None. The NCD server does, the MIT Sun4 server | |
1943 | doesn't. So we synthesize one; this means we might get two, but | |
1944 | that's ok, because the second one won't have any effect. */ | |
8d47f8c4 RS |
1945 | SELECTION_EVENT_DISPLAY (&event) = display; |
1946 | SELECTION_EVENT_SELECTION (&event) = selection_atom; | |
1947 | SELECTION_EVENT_TIME (&event) = timestamp; | |
ede4db72 RS |
1948 | x_handle_selection_clear (&event); |
1949 | ||
1950 | return Qt; | |
1951 | } | |
1952 | ||
a87ed99c RS |
1953 | /* Get rid of all the selections in buffer BUFFER. |
1954 | This is used when we kill a buffer. */ | |
1955 | ||
1956 | void | |
1957 | x_disown_buffer_selections (buffer) | |
1958 | Lisp_Object buffer; | |
1959 | { | |
1960 | Lisp_Object tail; | |
1961 | struct buffer *buf = XBUFFER (buffer); | |
1962 | ||
1963 | for (tail = Vselection_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1964 | { | |
1965 | Lisp_Object elt, value; | |
1966 | elt = XCONS (tail)->car; | |
1967 | value = XCONS (elt)->cdr; | |
1968 | if (CONSP (value) && MARKERP (XCONS (value)->car) | |
1969 | && XMARKER (XCONS (value)->car)->buffer == buf) | |
1970 | Fx_disown_selection_internal (XCONS (elt)->car, Qnil); | |
1971 | } | |
1972 | } | |
ede4db72 RS |
1973 | |
1974 | DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p, | |
1975 | 0, 1, 0, | |
a87ed99c | 1976 | "Whether the current Emacs process owns the given X Selection.\n\ |
ede4db72 RS |
1977 | The arg should be the name of the selection in question, typically one of\n\ |
1978 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1979 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1980 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
1981 | and t is the same as `SECONDARY'.)") | |
1982 | (selection) | |
1983 | Lisp_Object selection; | |
1984 | { | |
703e0710 | 1985 | check_x (); |
ede4db72 RS |
1986 | CHECK_SYMBOL (selection, 0); |
1987 | if (EQ (selection, Qnil)) selection = QPRIMARY; | |
1988 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
1989 | ||
1990 | if (NILP (Fassq (selection, Vselection_alist))) | |
1991 | return Qnil; | |
1992 | return Qt; | |
1993 | } | |
1994 | ||
1995 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
1996 | 0, 1, 0, | |
1997 | "Whether there is an owner for the given X Selection.\n\ | |
1998 | The arg should be the name of the selection in question, typically one of\n\ | |
1999 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
2000 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
2001 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
2002 | and t is the same as `SECONDARY'.)") | |
2003 | (selection) | |
2004 | Lisp_Object selection; | |
2005 | { | |
2006 | Window owner; | |
356ba514 | 2007 | Atom atom; |
3834c318 RS |
2008 | Display *dpy; |
2009 | ||
b8c70430 | 2010 | /* It should be safe to call this before we have an X frame. */ |
c6423dc1 | 2011 | if (! FRAME_X_P (selected_frame)) |
b8c70430 RS |
2012 | return Qnil; |
2013 | ||
3834c318 | 2014 | dpy = FRAME_X_DISPLAY (selected_frame); |
ede4db72 RS |
2015 | CHECK_SYMBOL (selection, 0); |
2016 | if (!NILP (Fx_selection_owner_p (selection))) | |
2017 | return Qt; | |
356ba514 RS |
2018 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
2019 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
5c3a351a RS |
2020 | atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
2021 | dpy, selection); | |
356ba514 RS |
2022 | if (atom == 0) |
2023 | return Qnil; | |
ede4db72 | 2024 | BLOCK_INPUT; |
356ba514 | 2025 | owner = XGetSelectionOwner (dpy, atom); |
ede4db72 RS |
2026 | UNBLOCK_INPUT; |
2027 | return (owner ? Qt : Qnil); | |
2028 | } | |
2029 | ||
2030 | \f | |
2031 | #ifdef CUT_BUFFER_SUPPORT | |
2032 | ||
ede4db72 RS |
2033 | /* Ensure that all 8 cut buffers exist. ICCCM says we gotta... */ |
2034 | static void | |
2035 | initialize_cut_buffers (display, window) | |
2036 | Display *display; | |
2037 | Window window; | |
2038 | { | |
2039 | unsigned char *data = (unsigned char *) ""; | |
2040 | BLOCK_INPUT; | |
2041 | #define FROB(atom) XChangeProperty (display, window, atom, XA_STRING, 8, \ | |
2042 | PropModeAppend, data, 0) | |
2043 | FROB (XA_CUT_BUFFER0); | |
2044 | FROB (XA_CUT_BUFFER1); | |
2045 | FROB (XA_CUT_BUFFER2); | |
2046 | FROB (XA_CUT_BUFFER3); | |
2047 | FROB (XA_CUT_BUFFER4); | |
2048 | FROB (XA_CUT_BUFFER5); | |
2049 | FROB (XA_CUT_BUFFER6); | |
2050 | FROB (XA_CUT_BUFFER7); | |
2051 | #undef FROB | |
2052 | UNBLOCK_INPUT; | |
ede4db72 RS |
2053 | } |
2054 | ||
2055 | ||
a87ed99c | 2056 | #define CHECK_CUT_BUFFER(symbol,n) \ |
ede4db72 RS |
2057 | { CHECK_SYMBOL ((symbol), (n)); \ |
2058 | if (!EQ((symbol), QCUT_BUFFER0) && !EQ((symbol), QCUT_BUFFER1) \ | |
2059 | && !EQ((symbol), QCUT_BUFFER2) && !EQ((symbol), QCUT_BUFFER3) \ | |
2060 | && !EQ((symbol), QCUT_BUFFER4) && !EQ((symbol), QCUT_BUFFER5) \ | |
2061 | && !EQ((symbol), QCUT_BUFFER6) && !EQ((symbol), QCUT_BUFFER7)) \ | |
2062 | Fsignal (Qerror, \ | |
a87ed99c | 2063 | Fcons (build_string ("doesn't name a cut buffer"), \ |
ede4db72 RS |
2064 | Fcons ((symbol), Qnil))); \ |
2065 | } | |
2066 | ||
a87ed99c RS |
2067 | DEFUN ("x-get-cut-buffer-internal", Fx_get_cut_buffer_internal, |
2068 | Sx_get_cut_buffer_internal, 1, 1, 0, | |
2069 | "Returns the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
2070 | (buffer) |
2071 | Lisp_Object buffer; | |
2072 | { | |
3834c318 | 2073 | Window window; |
ede4db72 RS |
2074 | Atom buffer_atom; |
2075 | unsigned char *data; | |
2076 | int bytes; | |
2077 | Atom type; | |
2078 | int format; | |
2079 | unsigned long size; | |
2080 | Lisp_Object ret; | |
3834c318 | 2081 | Display *display; |
5c3a351a | 2082 | struct x_display_info *dpyinfo; |
ede4db72 | 2083 | |
703e0710 | 2084 | check_x (); |
3834c318 | 2085 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 2086 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
3834c318 | 2087 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ |
a87ed99c | 2088 | CHECK_CUT_BUFFER (buffer, 0); |
5c3a351a | 2089 | buffer_atom = symbol_to_x_atom (dpyinfo, display, buffer); |
ede4db72 RS |
2090 | |
2091 | x_get_window_property (display, window, buffer_atom, &data, &bytes, | |
2092 | &type, &format, &size, 0); | |
2093 | if (!data) return Qnil; | |
2094 | ||
2095 | if (format != 8 || type != XA_STRING) | |
2096 | Fsignal (Qerror, | |
2097 | Fcons (build_string ("cut buffer doesn't contain 8-bit data"), | |
5c3a351a | 2098 | Fcons (x_atom_to_symbol (dpyinfo, display, type), |
ede4db72 RS |
2099 | Fcons (make_number (format), Qnil)))); |
2100 | ||
2101 | ret = (bytes ? make_string ((char *) data, bytes) : Qnil); | |
4feb31b2 | 2102 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 2103 | calls xmalloc itself. */ |
4feb31b2 | 2104 | xfree (data); |
ede4db72 RS |
2105 | return ret; |
2106 | } | |
2107 | ||
2108 | ||
a87ed99c RS |
2109 | DEFUN ("x-store-cut-buffer-internal", Fx_store_cut_buffer_internal, |
2110 | Sx_store_cut_buffer_internal, 2, 2, 0, | |
2111 | "Sets the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
2112 | (buffer, string) |
2113 | Lisp_Object buffer, string; | |
2114 | { | |
3834c318 | 2115 | Window window; |
ede4db72 RS |
2116 | Atom buffer_atom; |
2117 | unsigned char *data; | |
2118 | int bytes; | |
2119 | int bytes_remaining; | |
3834c318 RS |
2120 | int max_bytes; |
2121 | Display *display; | |
ede4db72 | 2122 | |
703e0710 | 2123 | check_x (); |
3834c318 RS |
2124 | display = FRAME_X_DISPLAY (selected_frame); |
2125 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
2126 | ||
2127 | max_bytes = SELECTION_QUANTUM (display); | |
2128 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
2129 | max_bytes = MAX_SELECTION_QUANTUM; | |
2130 | ||
a87ed99c | 2131 | CHECK_CUT_BUFFER (buffer, 0); |
ede4db72 | 2132 | CHECK_STRING (string, 0); |
5c3a351a RS |
2133 | buffer_atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
2134 | display, buffer); | |
ede4db72 RS |
2135 | data = (unsigned char *) XSTRING (string)->data; |
2136 | bytes = XSTRING (string)->size; | |
2137 | bytes_remaining = bytes; | |
2138 | ||
04649dbc KH |
2139 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
2140 | { | |
2141 | initialize_cut_buffers (display, window); | |
2142 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; | |
2143 | } | |
ede4db72 RS |
2144 | |
2145 | BLOCK_INPUT; | |
10608c8c RS |
2146 | |
2147 | /* Don't mess up with an empty value. */ | |
2148 | if (!bytes_remaining) | |
2149 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2150 | PropModeReplace, data, 0); | |
2151 | ||
ede4db72 RS |
2152 | while (bytes_remaining) |
2153 | { | |
2154 | int chunk = (bytes_remaining < max_bytes | |
2155 | ? bytes_remaining : max_bytes); | |
2156 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2157 | (bytes_remaining == bytes | |
2158 | ? PropModeReplace | |
2159 | : PropModeAppend), | |
2160 | data, chunk); | |
2161 | data += chunk; | |
2162 | bytes_remaining -= chunk; | |
2163 | } | |
2164 | UNBLOCK_INPUT; | |
2165 | return string; | |
2166 | } | |
2167 | ||
2168 | ||
a87ed99c RS |
2169 | DEFUN ("x-rotate-cut-buffers-internal", Fx_rotate_cut_buffers_internal, |
2170 | Sx_rotate_cut_buffers_internal, 1, 1, 0, | |
2171 | "Rotate the values of the cut buffers by the given number of steps;\n\ | |
ede4db72 RS |
2172 | positive means move values forward, negative means backward.") |
2173 | (n) | |
2174 | Lisp_Object n; | |
2175 | { | |
3834c318 RS |
2176 | Window window; |
2177 | Atom props[8]; | |
2178 | Display *display; | |
ede4db72 | 2179 | |
703e0710 | 2180 | check_x (); |
3834c318 RS |
2181 | display = FRAME_X_DISPLAY (selected_frame); |
2182 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
7da64e5c | 2183 | CHECK_NUMBER (n, 0); |
3834c318 RS |
2184 | if (XINT (n) == 0) |
2185 | return n; | |
04649dbc KH |
2186 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
2187 | { | |
2188 | initialize_cut_buffers (display, window); | |
2189 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; | |
2190 | } | |
3834c318 | 2191 | |
ede4db72 RS |
2192 | props[0] = XA_CUT_BUFFER0; |
2193 | props[1] = XA_CUT_BUFFER1; | |
2194 | props[2] = XA_CUT_BUFFER2; | |
2195 | props[3] = XA_CUT_BUFFER3; | |
2196 | props[4] = XA_CUT_BUFFER4; | |
2197 | props[5] = XA_CUT_BUFFER5; | |
2198 | props[6] = XA_CUT_BUFFER6; | |
2199 | props[7] = XA_CUT_BUFFER7; | |
2200 | BLOCK_INPUT; | |
2201 | XRotateWindowProperties (display, window, props, 8, XINT (n)); | |
2202 | UNBLOCK_INPUT; | |
2203 | return n; | |
2204 | } | |
2205 | ||
2206 | #endif | |
2207 | \f | |
ede4db72 RS |
2208 | void |
2209 | syms_of_xselect () | |
2210 | { | |
ede4db72 RS |
2211 | defsubr (&Sx_get_selection_internal); |
2212 | defsubr (&Sx_own_selection_internal); | |
2213 | defsubr (&Sx_disown_selection_internal); | |
2214 | defsubr (&Sx_selection_owner_p); | |
2215 | defsubr (&Sx_selection_exists_p); | |
2216 | ||
2217 | #ifdef CUT_BUFFER_SUPPORT | |
a87ed99c RS |
2218 | defsubr (&Sx_get_cut_buffer_internal); |
2219 | defsubr (&Sx_store_cut_buffer_internal); | |
2220 | defsubr (&Sx_rotate_cut_buffers_internal); | |
ede4db72 RS |
2221 | #endif |
2222 | ||
2223 | reading_selection_reply = Fcons (Qnil, Qnil); | |
2224 | staticpro (&reading_selection_reply); | |
2225 | reading_selection_window = 0; | |
2226 | reading_which_selection = 0; | |
2227 | ||
2228 | property_change_wait_list = 0; | |
2f65feb6 | 2229 | prop_location_identifier = 0; |
ede4db72 RS |
2230 | property_change_reply = Fcons (Qnil, Qnil); |
2231 | staticpro (&property_change_reply); | |
2232 | ||
2233 | Vselection_alist = Qnil; | |
2234 | staticpro (&Vselection_alist); | |
2235 | ||
2236 | DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist, | |
4cf066bb | 2237 | "An alist associating X Windows selection-types with functions.\n\ |
ede4db72 RS |
2238 | These functions are called to convert the selection, with three args:\n\ |
2239 | the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2240 | a desired type to which the selection should be converted;\n\ | |
2241 | and the local selection value (whatever was given to `x-own-selection').\n\ | |
2242 | \n\ | |
2243 | The function should return the value to send to the X server\n\ | |
2244 | \(typically a string). A return value of nil\n\ | |
2245 | means that the conversion could not be done.\n\ | |
2246 | A return value which is the symbol `NULL'\n\ | |
2247 | means that a side-effect was executed,\n\ | |
2248 | and there is no meaningful selection value."); | |
2249 | Vselection_converter_alist = Qnil; | |
2250 | ||
2251 | DEFVAR_LISP ("x-lost-selection-hooks", &Vx_lost_selection_hooks, | |
4cf066bb | 2252 | "A list of functions to be called when Emacs loses an X selection.\n\ |
ede4db72 RS |
2253 | \(This happens when some other X client makes its own selection\n\ |
2254 | or when a Lisp program explicitly clears the selection.)\n\ | |
2255 | The functions are called with one argument, the selection type\n\ | |
d31b6237 | 2256 | \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD')."); |
ede4db72 RS |
2257 | Vx_lost_selection_hooks = Qnil; |
2258 | ||
2259 | DEFVAR_LISP ("x-sent-selection-hooks", &Vx_sent_selection_hooks, | |
4cf066bb | 2260 | "A list of functions to be called when Emacs answers a selection request.\n\ |
ede4db72 RS |
2261 | The functions are called with four arguments:\n\ |
2262 | - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2263 | - the selection-type which Emacs was asked to convert the\n\ | |
2264 | selection into before sending (for example, `STRING' or `LENGTH');\n\ | |
2265 | - a flag indicating success or failure for responding to the request.\n\ | |
2266 | We might have failed (and declined the request) for any number of reasons,\n\ | |
2267 | including being asked for a selection that we no longer own, or being asked\n\ | |
2268 | to convert into a type that we don't know about or that is inappropriate.\n\ | |
2269 | This hook doesn't let you change the behavior of Emacs's selection replies,\n\ | |
2270 | it merely informs you that they have happened."); | |
2271 | Vx_sent_selection_hooks = Qnil; | |
2272 | ||
4cf066bb RS |
2273 | DEFVAR_LISP ("clipboard-coding-system", &Vclipboard_coding_system, |
2274 | "Coding system for communicating with other X clients.\n\ | |
2275 | When sending or receiving text via cut_buffer, selection, and clipboard,\n\ | |
2276 | the text is encoded or decoded by this coding system.\n\ | |
2584c9ec KH |
2277 | A default value is `iso-latin-1'"); |
2278 | Vclipboard_coding_system=intern ("iso-latin-1"); | |
2279 | staticpro(&Vclipboard_coding_system); | |
2280 | ||
ede4db72 | 2281 | DEFVAR_INT ("x-selection-timeout", &x_selection_timeout, |
4cf066bb | 2282 | "Number of milliseconds to wait for a selection reply.\n\ |
2a1a4c9d | 2283 | If the selection owner doesn't reply in this time, we give up.\n\ |
ede4db72 | 2284 | A value of 0 means wait as long as necessary. This is initialized from the\n\ |
80da0190 | 2285 | \"*selectionTimeout\" resource."); |
ede4db72 RS |
2286 | x_selection_timeout = 0; |
2287 | ||
2288 | QPRIMARY = intern ("PRIMARY"); staticpro (&QPRIMARY); | |
2289 | QSECONDARY = intern ("SECONDARY"); staticpro (&QSECONDARY); | |
2290 | QSTRING = intern ("STRING"); staticpro (&QSTRING); | |
2291 | QINTEGER = intern ("INTEGER"); staticpro (&QINTEGER); | |
2292 | QCLIPBOARD = intern ("CLIPBOARD"); staticpro (&QCLIPBOARD); | |
2293 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2294 | QTEXT = intern ("TEXT"); staticpro (&QTEXT); | |
e6c7c988 | 2295 | QCOMPOUND_TEXT = intern ("COMPOUND_TEXT"); staticpro (&QCOMPOUND_TEXT); |
ede4db72 RS |
2296 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); |
2297 | QDELETE = intern ("DELETE"); staticpro (&QDELETE); | |
2298 | QMULTIPLE = intern ("MULTIPLE"); staticpro (&QMULTIPLE); | |
2299 | QINCR = intern ("INCR"); staticpro (&QINCR); | |
2300 | QEMACS_TMP = intern ("_EMACS_TMP_"); staticpro (&QEMACS_TMP); | |
2301 | QTARGETS = intern ("TARGETS"); staticpro (&QTARGETS); | |
2302 | QATOM = intern ("ATOM"); staticpro (&QATOM); | |
2303 | QATOM_PAIR = intern ("ATOM_PAIR"); staticpro (&QATOM_PAIR); | |
2304 | QNULL = intern ("NULL"); staticpro (&QNULL); | |
2305 | ||
2306 | #ifdef CUT_BUFFER_SUPPORT | |
2307 | QCUT_BUFFER0 = intern ("CUT_BUFFER0"); staticpro (&QCUT_BUFFER0); | |
2308 | QCUT_BUFFER1 = intern ("CUT_BUFFER1"); staticpro (&QCUT_BUFFER1); | |
2309 | QCUT_BUFFER2 = intern ("CUT_BUFFER2"); staticpro (&QCUT_BUFFER2); | |
2310 | QCUT_BUFFER3 = intern ("CUT_BUFFER3"); staticpro (&QCUT_BUFFER3); | |
2311 | QCUT_BUFFER4 = intern ("CUT_BUFFER4"); staticpro (&QCUT_BUFFER4); | |
2312 | QCUT_BUFFER5 = intern ("CUT_BUFFER5"); staticpro (&QCUT_BUFFER5); | |
2313 | QCUT_BUFFER6 = intern ("CUT_BUFFER6"); staticpro (&QCUT_BUFFER6); | |
2314 | QCUT_BUFFER7 = intern ("CUT_BUFFER7"); staticpro (&QCUT_BUFFER7); | |
2315 | #endif | |
2316 | ||
2317 | } |