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" |
e6c7c988 KH |
30 | #include "charset.h" |
31 | #include "coding.h" | |
7da64e5c | 32 | |
ede4db72 RS |
33 | #define CUT_BUFFER_SUPPORT |
34 | ||
ede4db72 RS |
35 | Lisp_Object QPRIMARY, QSECONDARY, QSTRING, QINTEGER, QCLIPBOARD, QTIMESTAMP, |
36 | QTEXT, QDELETE, QMULTIPLE, QINCR, QEMACS_TMP, QTARGETS, QATOM, QNULL, | |
37 | QATOM_PAIR; | |
38 | ||
e6c7c988 KH |
39 | Lisp_Object QCOMPOUND_TEXT; /* This is a type of selection. */ |
40 | ||
ede4db72 RS |
41 | #ifdef CUT_BUFFER_SUPPORT |
42 | Lisp_Object QCUT_BUFFER0, QCUT_BUFFER1, QCUT_BUFFER2, QCUT_BUFFER3, | |
43 | QCUT_BUFFER4, QCUT_BUFFER5, QCUT_BUFFER6, QCUT_BUFFER7; | |
44 | #endif | |
45 | ||
8f4f023f RS |
46 | static Lisp_Object Vx_lost_selection_hooks; |
47 | static Lisp_Object Vx_sent_selection_hooks; | |
ede4db72 RS |
48 | |
49 | /* If this is a smaller number than the max-request-size of the display, | |
50 | emacs will use INCR selection transfer when the selection is larger | |
51 | than this. The max-request-size is usually around 64k, so if you want | |
52 | emacs to use incremental selection transfers when the selection is | |
53 | smaller than that, set this. I added this mostly for debugging the | |
8f4f023f | 54 | incremental transfer stuff, but it might improve server performance. */ |
ede4db72 RS |
55 | #define MAX_SELECTION_QUANTUM 0xFFFFFF |
56 | ||
c3498e64 JB |
57 | #ifdef HAVE_X11R4 |
58 | #define SELECTION_QUANTUM(dpy) ((XMaxRequestSize(dpy) << 2) - 100) | |
59 | #else | |
60 | #define SELECTION_QUANTUM(dpy) (((dpy)->max_request_size << 2) - 100) | |
61 | #endif | |
ede4db72 | 62 | |
7da64e5c | 63 | /* The timestamp of the last input event Emacs received from the X server. */ |
29674445 KH |
64 | /* Defined in keyboard.c. */ |
65 | extern unsigned long last_event_timestamp; | |
ede4db72 RS |
66 | |
67 | /* This is an association list whose elements are of the form | |
118bd841 RS |
68 | ( SELECTION-NAME SELECTION-VALUE SELECTION-TIMESTAMP FRAME) |
69 | SELECTION-NAME is a lisp symbol, whose name is the name of an X Atom. | |
70 | SELECTION-VALUE is the value that emacs owns for that selection. | |
ede4db72 | 71 | It may be any kind of Lisp object. |
118bd841 | 72 | SELECTION-TIMESTAMP is the time at which emacs began owning this selection, |
ede4db72 | 73 | as a cons of two 16-bit numbers (making a 32 bit time.) |
118bd841 RS |
74 | FRAME is the frame for which we made the selection. |
75 | If there is an entry in this alist, then it can be assumed that Emacs owns | |
ede4db72 RS |
76 | that selection. |
77 | The only (eq) parts of this list that are visible from Lisp are the | |
8f4f023f RS |
78 | selection-values. */ |
79 | static Lisp_Object Vselection_alist; | |
ede4db72 RS |
80 | |
81 | /* This is an alist whose CARs are selection-types (whose names are the same | |
82 | as the names of X Atoms) and whose CDRs are the names of Lisp functions to | |
83 | call to convert the given Emacs selection value to a string representing | |
84 | the given selection type. This is for Lisp-level extension of the emacs | |
8f4f023f RS |
85 | selection handling. */ |
86 | static Lisp_Object Vselection_converter_alist; | |
ede4db72 RS |
87 | |
88 | /* If the selection owner takes too long to reply to a selection request, | |
8f4f023f RS |
89 | we give up on it. This is in milliseconds (0 = no timeout.) */ |
90 | static int x_selection_timeout; | |
ede4db72 RS |
91 | \f |
92 | /* Utility functions */ | |
93 | ||
94 | static void lisp_data_to_selection_data (); | |
95 | static Lisp_Object selection_data_to_lisp_data (); | |
96 | static Lisp_Object x_get_window_property_as_lisp_data (); | |
97 | ||
ede4db72 RS |
98 | /* This converts a Lisp symbol to a server Atom, avoiding a server |
99 | roundtrip whenever possible. */ | |
100 | ||
101 | static Atom | |
5c3a351a RS |
102 | symbol_to_x_atom (dpyinfo, display, sym) |
103 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
104 | Display *display; |
105 | Lisp_Object sym; | |
106 | { | |
107 | Atom val; | |
108 | if (NILP (sym)) return 0; | |
109 | if (EQ (sym, QPRIMARY)) return XA_PRIMARY; | |
110 | if (EQ (sym, QSECONDARY)) return XA_SECONDARY; | |
111 | if (EQ (sym, QSTRING)) return XA_STRING; | |
112 | if (EQ (sym, QINTEGER)) return XA_INTEGER; | |
113 | if (EQ (sym, QATOM)) return XA_ATOM; | |
5c3a351a RS |
114 | if (EQ (sym, QCLIPBOARD)) return dpyinfo->Xatom_CLIPBOARD; |
115 | if (EQ (sym, QTIMESTAMP)) return dpyinfo->Xatom_TIMESTAMP; | |
116 | if (EQ (sym, QTEXT)) return dpyinfo->Xatom_TEXT; | |
e6c7c988 | 117 | if (EQ (sym, QCOMPOUND_TEXT)) return dpyinfo->Xatom_COMPOUND_TEXT; |
5c3a351a RS |
118 | if (EQ (sym, QDELETE)) return dpyinfo->Xatom_DELETE; |
119 | if (EQ (sym, QMULTIPLE)) return dpyinfo->Xatom_MULTIPLE; | |
120 | if (EQ (sym, QINCR)) return dpyinfo->Xatom_INCR; | |
121 | if (EQ (sym, QEMACS_TMP)) return dpyinfo->Xatom_EMACS_TMP; | |
122 | if (EQ (sym, QTARGETS)) return dpyinfo->Xatom_TARGETS; | |
123 | if (EQ (sym, QNULL)) return dpyinfo->Xatom_NULL; | |
ede4db72 RS |
124 | #ifdef CUT_BUFFER_SUPPORT |
125 | if (EQ (sym, QCUT_BUFFER0)) return XA_CUT_BUFFER0; | |
126 | if (EQ (sym, QCUT_BUFFER1)) return XA_CUT_BUFFER1; | |
127 | if (EQ (sym, QCUT_BUFFER2)) return XA_CUT_BUFFER2; | |
128 | if (EQ (sym, QCUT_BUFFER3)) return XA_CUT_BUFFER3; | |
129 | if (EQ (sym, QCUT_BUFFER4)) return XA_CUT_BUFFER4; | |
130 | if (EQ (sym, QCUT_BUFFER5)) return XA_CUT_BUFFER5; | |
131 | if (EQ (sym, QCUT_BUFFER6)) return XA_CUT_BUFFER6; | |
132 | if (EQ (sym, QCUT_BUFFER7)) return XA_CUT_BUFFER7; | |
133 | #endif | |
134 | if (!SYMBOLP (sym)) abort (); | |
135 | ||
136 | #if 0 | |
137 | fprintf (stderr, " XInternAtom %s\n", (char *) XSYMBOL (sym)->name->data); | |
138 | #endif | |
139 | BLOCK_INPUT; | |
140 | val = XInternAtom (display, (char *) XSYMBOL (sym)->name->data, False); | |
141 | UNBLOCK_INPUT; | |
142 | return val; | |
143 | } | |
144 | ||
145 | ||
146 | /* This converts a server Atom to a Lisp symbol, avoiding server roundtrips | |
147 | and calls to intern whenever possible. */ | |
148 | ||
149 | static Lisp_Object | |
5c3a351a RS |
150 | x_atom_to_symbol (dpyinfo, display, atom) |
151 | struct x_display_info *dpyinfo; | |
ede4db72 RS |
152 | Display *display; |
153 | Atom atom; | |
154 | { | |
155 | char *str; | |
156 | Lisp_Object val; | |
157 | if (! atom) return Qnil; | |
7da64e5c RS |
158 | switch (atom) |
159 | { | |
160 | case XA_PRIMARY: | |
161 | return QPRIMARY; | |
162 | case XA_SECONDARY: | |
163 | return QSECONDARY; | |
164 | case XA_STRING: | |
165 | return QSTRING; | |
166 | case XA_INTEGER: | |
167 | return QINTEGER; | |
168 | case XA_ATOM: | |
169 | return QATOM; | |
ede4db72 | 170 | #ifdef CUT_BUFFER_SUPPORT |
7da64e5c RS |
171 | case XA_CUT_BUFFER0: |
172 | return QCUT_BUFFER0; | |
173 | case XA_CUT_BUFFER1: | |
174 | return QCUT_BUFFER1; | |
175 | case XA_CUT_BUFFER2: | |
176 | return QCUT_BUFFER2; | |
177 | case XA_CUT_BUFFER3: | |
178 | return QCUT_BUFFER3; | |
179 | case XA_CUT_BUFFER4: | |
180 | return QCUT_BUFFER4; | |
181 | case XA_CUT_BUFFER5: | |
182 | return QCUT_BUFFER5; | |
183 | case XA_CUT_BUFFER6: | |
184 | return QCUT_BUFFER6; | |
185 | case XA_CUT_BUFFER7: | |
186 | return QCUT_BUFFER7; | |
ede4db72 | 187 | #endif |
7da64e5c RS |
188 | } |
189 | ||
5c3a351a | 190 | if (atom == dpyinfo->Xatom_CLIPBOARD) |
7da64e5c | 191 | return QCLIPBOARD; |
5c3a351a | 192 | if (atom == dpyinfo->Xatom_TIMESTAMP) |
7da64e5c | 193 | return QTIMESTAMP; |
5c3a351a | 194 | if (atom == dpyinfo->Xatom_TEXT) |
7da64e5c | 195 | return QTEXT; |
e6c7c988 KH |
196 | if (atom == dpyinfo->Xatom_COMPOUND_TEXT) |
197 | return QCOMPOUND_TEXT; | |
5c3a351a | 198 | if (atom == dpyinfo->Xatom_DELETE) |
7da64e5c | 199 | return QDELETE; |
5c3a351a | 200 | if (atom == dpyinfo->Xatom_MULTIPLE) |
7da64e5c | 201 | return QMULTIPLE; |
5c3a351a | 202 | if (atom == dpyinfo->Xatom_INCR) |
7da64e5c | 203 | return QINCR; |
5c3a351a | 204 | if (atom == dpyinfo->Xatom_EMACS_TMP) |
7da64e5c | 205 | return QEMACS_TMP; |
5c3a351a | 206 | if (atom == dpyinfo->Xatom_TARGETS) |
7da64e5c | 207 | return QTARGETS; |
5c3a351a | 208 | if (atom == dpyinfo->Xatom_NULL) |
7da64e5c | 209 | return QNULL; |
ede4db72 RS |
210 | |
211 | BLOCK_INPUT; | |
212 | str = XGetAtomName (display, atom); | |
213 | UNBLOCK_INPUT; | |
214 | #if 0 | |
215 | fprintf (stderr, " XGetAtomName --> %s\n", str); | |
216 | #endif | |
217 | if (! str) return Qnil; | |
218 | val = intern (str); | |
219 | BLOCK_INPUT; | |
0158abbc | 220 | /* This was allocated by Xlib, so use XFree. */ |
ede4db72 RS |
221 | XFree (str); |
222 | UNBLOCK_INPUT; | |
223 | return val; | |
224 | } | |
8a89415e | 225 | \f |
ede4db72 RS |
226 | /* Do protocol to assert ourself as a selection owner. |
227 | Update the Vselection_alist so that we can reply to later requests for | |
228 | our selection. */ | |
229 | ||
230 | static void | |
231 | x_own_selection (selection_name, selection_value) | |
232 | Lisp_Object selection_name, selection_value; | |
233 | { | |
ede4db72 | 234 | Window selecting_window = FRAME_X_WINDOW (selected_frame); |
3834c318 | 235 | Display *display = FRAME_X_DISPLAY (selected_frame); |
7da64e5c | 236 | Time time = last_event_timestamp; |
ede4db72 | 237 | Atom selection_atom; |
5c3a351a | 238 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
5a499696 | 239 | int count; |
ede4db72 RS |
240 | |
241 | CHECK_SYMBOL (selection_name, 0); | |
5c3a351a | 242 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection_name); |
ede4db72 RS |
243 | |
244 | BLOCK_INPUT; | |
5a499696 | 245 | count = x_catch_errors (display); |
ede4db72 | 246 | XSetSelectionOwner (display, selection_atom, selecting_window, time); |
a7b24d46 | 247 | x_check_errors (display, "Can't set selection: %s"); |
5a499696 | 248 | x_uncatch_errors (display, count); |
ede4db72 RS |
249 | UNBLOCK_INPUT; |
250 | ||
251 | /* Now update the local cache */ | |
252 | { | |
253 | Lisp_Object selection_time; | |
254 | Lisp_Object selection_data; | |
255 | Lisp_Object prev_value; | |
256 | ||
257 | selection_time = long_to_cons ((unsigned long) time); | |
258 | selection_data = Fcons (selection_name, | |
259 | Fcons (selection_value, | |
118bd841 RS |
260 | Fcons (selection_time, |
261 | Fcons (Fselected_frame (), Qnil)))); | |
ede4db72 RS |
262 | prev_value = assq_no_quit (selection_name, Vselection_alist); |
263 | ||
264 | Vselection_alist = Fcons (selection_data, Vselection_alist); | |
265 | ||
266 | /* If we already owned the selection, remove the old selection data. | |
267 | Perhaps we should destructively modify it instead. | |
268 | Don't use Fdelq as that may QUIT. */ | |
269 | if (!NILP (prev_value)) | |
270 | { | |
271 | Lisp_Object rest; /* we know it's not the CAR, so it's easy. */ | |
272 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
273 | if (EQ (prev_value, Fcar (XCONS (rest)->cdr))) | |
274 | { | |
275 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
276 | break; | |
277 | } | |
278 | } | |
279 | } | |
280 | } | |
281 | \f | |
282 | /* Given a selection-name and desired type, look up our local copy of | |
283 | the selection value and convert it to the type. | |
284 | The value is nil or a string. | |
285 | This function is used both for remote requests | |
7da64e5c | 286 | and for local x-get-selection-internal. |
ede4db72 RS |
287 | |
288 | This calls random Lisp code, and may signal or gc. */ | |
289 | ||
290 | static Lisp_Object | |
291 | x_get_local_selection (selection_symbol, target_type) | |
292 | Lisp_Object selection_symbol, target_type; | |
293 | { | |
294 | Lisp_Object local_value; | |
295 | Lisp_Object handler_fn, value, type, check; | |
296 | int count; | |
297 | ||
298 | local_value = assq_no_quit (selection_symbol, Vselection_alist); | |
299 | ||
300 | if (NILP (local_value)) return Qnil; | |
301 | ||
302 | /* TIMESTAMP and MULTIPLE are special cases 'cause that's easiest. */ | |
303 | if (EQ (target_type, QTIMESTAMP)) | |
304 | { | |
305 | handler_fn = Qnil; | |
306 | value = XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car; | |
307 | } | |
308 | #if 0 | |
309 | else if (EQ (target_type, QDELETE)) | |
310 | { | |
311 | handler_fn = Qnil; | |
312 | Fx_disown_selection_internal | |
313 | (selection_symbol, | |
314 | XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car); | |
315 | value = QNULL; | |
316 | } | |
317 | #endif | |
318 | ||
319 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
320 | else if (CONSP (target_type) | |
321 | && XCONS (target_type)->car == QMULTIPLE) | |
322 | { | |
9d2d1dd8 KH |
323 | Lisp_Object pairs; |
324 | int size; | |
ede4db72 | 325 | int i; |
9d2d1dd8 KH |
326 | pairs = XCONS (target_type)->cdr; |
327 | size = XVECTOR (pairs)->size; | |
ede4db72 RS |
328 | /* If the target is MULTIPLE, then target_type looks like |
329 | (MULTIPLE . [[SELECTION1 TARGET1] [SELECTION2 TARGET2] ... ]) | |
330 | We modify the second element of each pair in the vector and | |
331 | return it as [[SELECTION1 <value1>] [SELECTION2 <value2>] ... ] | |
332 | */ | |
333 | for (i = 0; i < size; i++) | |
334 | { | |
9d2d1dd8 KH |
335 | Lisp_Object pair; |
336 | pair = XVECTOR (pairs)->contents [i]; | |
ede4db72 RS |
337 | XVECTOR (pair)->contents [1] |
338 | = x_get_local_selection (XVECTOR (pair)->contents [0], | |
339 | XVECTOR (pair)->contents [1]); | |
340 | } | |
341 | return pairs; | |
342 | } | |
343 | #endif | |
344 | else | |
345 | { | |
346 | /* Don't allow a quit within the converter. | |
347 | When the user types C-g, he would be surprised | |
348 | if by luck it came during a converter. */ | |
349 | count = specpdl_ptr - specpdl; | |
350 | specbind (Qinhibit_quit, Qt); | |
351 | ||
352 | CHECK_SYMBOL (target_type, 0); | |
353 | handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist)); | |
1eb4d468 RS |
354 | if (!NILP (handler_fn)) |
355 | value = call3 (handler_fn, | |
356 | selection_symbol, target_type, | |
357 | XCONS (XCONS (local_value)->cdr)->car); | |
358 | else | |
359 | value = Qnil; | |
ede4db72 RS |
360 | unbind_to (count, Qnil); |
361 | } | |
362 | ||
363 | /* Make sure this value is of a type that we could transmit | |
364 | to another X client. */ | |
a87ed99c | 365 | |
ede4db72 RS |
366 | check = value; |
367 | if (CONSP (value) | |
368 | && SYMBOLP (XCONS (value)->car)) | |
369 | type = XCONS (value)->car, | |
370 | check = XCONS (value)->cdr; | |
371 | ||
372 | if (STRINGP (check) | |
373 | || VECTORP (check) | |
374 | || SYMBOLP (check) | |
7da64e5c | 375 | || INTEGERP (check) |
ede4db72 RS |
376 | || NILP (value)) |
377 | return value; | |
a87ed99c | 378 | /* Check for a value that cons_to_long could handle. */ |
ede4db72 | 379 | else if (CONSP (check) |
7da64e5c RS |
380 | && INTEGERP (XCONS (check)->car) |
381 | && (INTEGERP (XCONS (check)->cdr) | |
ede4db72 RS |
382 | || |
383 | (CONSP (XCONS (check)->cdr) | |
7da64e5c | 384 | && INTEGERP (XCONS (XCONS (check)->cdr)->car) |
ede4db72 RS |
385 | && NILP (XCONS (XCONS (check)->cdr)->cdr)))) |
386 | return value; | |
387 | else | |
388 | return | |
389 | Fsignal (Qerror, | |
a87ed99c | 390 | Fcons (build_string ("invalid data returned by selection-conversion function"), |
ede4db72 RS |
391 | Fcons (handler_fn, Fcons (value, Qnil)))); |
392 | } | |
393 | \f | |
394 | /* Subroutines of x_reply_selection_request. */ | |
395 | ||
5d0ba25b | 396 | /* Send a SelectionNotify event to the requestor with property=None, |
ede4db72 RS |
397 | meaning we were unable to do what they wanted. */ |
398 | ||
399 | static void | |
400 | x_decline_selection_request (event) | |
401 | struct input_event *event; | |
402 | { | |
403 | XSelectionEvent reply; | |
404 | reply.type = SelectionNotify; | |
405 | reply.display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 406 | reply.requestor = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
407 | reply.selection = SELECTION_EVENT_SELECTION (event); |
408 | reply.time = SELECTION_EVENT_TIME (event); | |
409 | reply.target = SELECTION_EVENT_TARGET (event); | |
410 | reply.property = None; | |
411 | ||
412 | BLOCK_INPUT; | |
5d0ba25b | 413 | XSendEvent (reply.display, reply.requestor, False, 0L, |
7ffb2841 | 414 | (XEvent *) &reply); |
5c3a351a | 415 | XFlush (reply.display); |
ede4db72 RS |
416 | UNBLOCK_INPUT; |
417 | } | |
418 | ||
419 | /* This is the selection request currently being processed. | |
420 | It is set to zero when the request is fully processed. */ | |
421 | static struct input_event *x_selection_current_request; | |
422 | ||
423 | /* Used as an unwind-protect clause so that, if a selection-converter signals | |
2a1a4c9d | 424 | an error, we tell the requester that we were unable to do what they wanted |
ede4db72 RS |
425 | before we throw to top-level or go into the debugger or whatever. */ |
426 | ||
427 | static Lisp_Object | |
428 | x_selection_request_lisp_error (ignore) | |
429 | Lisp_Object ignore; | |
430 | { | |
431 | if (x_selection_current_request != 0) | |
432 | x_decline_selection_request (x_selection_current_request); | |
433 | return Qnil; | |
434 | } | |
435 | \f | |
d1f21a66 RS |
436 | |
437 | /* This stuff is so that INCR selections are reentrant (that is, so we can | |
438 | be servicing multiple INCR selection requests simultaneously.) I haven't | |
439 | actually tested that yet. */ | |
440 | ||
441 | /* Keep a list of the property changes that are awaited. */ | |
442 | ||
443 | struct prop_location | |
444 | { | |
445 | int identifier; | |
446 | Display *display; | |
447 | Window window; | |
448 | Atom property; | |
449 | int desired_state; | |
450 | int arrived; | |
451 | struct prop_location *next; | |
452 | }; | |
453 | ||
454 | static struct prop_location *expect_property_change (); | |
455 | static void wait_for_property_change (); | |
456 | static void unexpect_property_change (); | |
457 | static int waiting_for_other_props_on_window (); | |
458 | ||
459 | static int prop_location_identifier; | |
460 | ||
461 | static Lisp_Object property_change_reply; | |
462 | ||
463 | static struct prop_location *property_change_reply_object; | |
464 | ||
465 | static struct prop_location *property_change_wait_list; | |
55b2d45d RS |
466 | |
467 | static Lisp_Object | |
468 | queue_selection_requests_unwind (frame) | |
469 | Lisp_Object frame; | |
470 | { | |
471 | FRAME_PTR f = XFRAME (frame); | |
472 | ||
473 | if (! NILP (frame)) | |
474 | x_stop_queuing_selection_requests (FRAME_X_DISPLAY (f)); | |
ab552306 | 475 | return Qnil; |
55b2d45d RS |
476 | } |
477 | ||
478 | /* Return some frame whose display info is DPYINFO. | |
479 | Return nil if there is none. */ | |
480 | ||
481 | static Lisp_Object | |
482 | some_frame_on_display (dpyinfo) | |
483 | struct x_display_info *dpyinfo; | |
484 | { | |
485 | Lisp_Object list, frame; | |
486 | ||
487 | FOR_EACH_FRAME (list, frame) | |
488 | { | |
489 | if (FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
490 | return frame; | |
491 | } | |
492 | ||
493 | return Qnil; | |
494 | } | |
d1f21a66 | 495 | \f |
ede4db72 RS |
496 | /* Send the reply to a selection request event EVENT. |
497 | TYPE is the type of selection data requested. | |
498 | DATA and SIZE describe the data to send, already converted. | |
499 | FORMAT is the unit-size (in bits) of the data to be transmitted. */ | |
500 | ||
501 | static void | |
502 | x_reply_selection_request (event, format, data, size, type) | |
503 | struct input_event *event; | |
504 | int format, size; | |
505 | unsigned char *data; | |
506 | Atom type; | |
507 | { | |
508 | XSelectionEvent reply; | |
509 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 510 | Window window = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
511 | int bytes_remaining; |
512 | int format_bytes = format/8; | |
513 | int max_bytes = SELECTION_QUANTUM (display); | |
5c3a351a | 514 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
5a499696 | 515 | int count; |
ede4db72 RS |
516 | |
517 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
518 | max_bytes = MAX_SELECTION_QUANTUM; | |
519 | ||
520 | reply.type = SelectionNotify; | |
521 | reply.display = display; | |
5d0ba25b | 522 | reply.requestor = window; |
ede4db72 RS |
523 | reply.selection = SELECTION_EVENT_SELECTION (event); |
524 | reply.time = SELECTION_EVENT_TIME (event); | |
525 | reply.target = SELECTION_EVENT_TARGET (event); | |
526 | reply.property = SELECTION_EVENT_PROPERTY (event); | |
527 | if (reply.property == None) | |
528 | reply.property = reply.target; | |
529 | ||
530 | /* #### XChangeProperty can generate BadAlloc, and we must handle it! */ | |
afe1529d | 531 | BLOCK_INPUT; |
ad7f9d12 | 532 | count = x_catch_errors (display); |
ede4db72 | 533 | |
ede4db72 RS |
534 | /* Store the data on the requested property. |
535 | If the selection is large, only store the first N bytes of it. | |
536 | */ | |
537 | bytes_remaining = size * format_bytes; | |
538 | if (bytes_remaining <= max_bytes) | |
539 | { | |
540 | /* Send all the data at once, with minimal handshaking. */ | |
541 | #if 0 | |
542 | fprintf (stderr,"\nStoring all %d\n", bytes_remaining); | |
543 | #endif | |
544 | XChangeProperty (display, window, reply.property, type, format, | |
545 | PropModeReplace, data, size); | |
546 | /* At this point, the selection was successfully stored; ack it. */ | |
2f65feb6 | 547 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
ede4db72 RS |
548 | } |
549 | else | |
550 | { | |
551 | /* Send an INCR selection. */ | |
d1f21a66 | 552 | struct prop_location *wait_object; |
afe1529d | 553 | int had_errors; |
55b2d45d | 554 | Lisp_Object frame; |
ede4db72 | 555 | |
55b2d45d RS |
556 | frame = some_frame_on_display (dpyinfo); |
557 | ||
558 | /* If the display no longer has frames, we can't expect | |
559 | to get many more selection requests from it, so don't | |
560 | bother trying to queue them. */ | |
561 | if (!NILP (frame)) | |
562 | { | |
563 | x_start_queuing_selection_requests (display); | |
564 | ||
565 | record_unwind_protect (queue_selection_requests_unwind, | |
566 | frame); | |
567 | } | |
2f65feb6 | 568 | |
19126e11 | 569 | if (x_window_to_frame (dpyinfo, window)) /* #### debug */ |
606140dd | 570 | error ("Attempt to transfer an INCR to ourself!"); |
ede4db72 RS |
571 | #if 0 |
572 | fprintf (stderr, "\nINCR %d\n", bytes_remaining); | |
573 | #endif | |
d1f21a66 RS |
574 | wait_object = expect_property_change (display, window, reply.property, |
575 | PropertyDelete); | |
ede4db72 | 576 | |
5c3a351a | 577 | XChangeProperty (display, window, reply.property, dpyinfo->Xatom_INCR, |
55b2d45d RS |
578 | 32, PropModeReplace, |
579 | (unsigned char *) &bytes_remaining, 1); | |
ede4db72 RS |
580 | XSelectInput (display, window, PropertyChangeMask); |
581 | /* Tell 'em the INCR data is there... */ | |
55b2d45d | 582 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
5c3a351a | 583 | XFlush (display); |
afe1529d RS |
584 | |
585 | had_errors = x_had_errors_p (display); | |
2f65feb6 | 586 | UNBLOCK_INPUT; |
ede4db72 | 587 | |
2a1a4c9d | 588 | /* First, wait for the requester to ack by deleting the property. |
ede4db72 | 589 | This can run random lisp code (process handlers) or signal. */ |
afe1529d RS |
590 | if (! had_errors) |
591 | wait_for_property_change (wait_object); | |
ede4db72 RS |
592 | |
593 | while (bytes_remaining) | |
594 | { | |
595 | int i = ((bytes_remaining < max_bytes) | |
596 | ? bytes_remaining | |
597 | : max_bytes); | |
2f65feb6 RS |
598 | |
599 | BLOCK_INPUT; | |
600 | ||
d1f21a66 RS |
601 | wait_object |
602 | = expect_property_change (display, window, reply.property, | |
603 | PropertyDelete); | |
ede4db72 RS |
604 | #if 0 |
605 | fprintf (stderr," INCR adding %d\n", i); | |
606 | #endif | |
607 | /* Append the next chunk of data to the property. */ | |
608 | XChangeProperty (display, window, reply.property, type, format, | |
609 | PropModeAppend, data, i / format_bytes); | |
610 | bytes_remaining -= i; | |
611 | data += i; | |
5c3a351a | 612 | XFlush (display); |
afe1529d | 613 | had_errors = x_had_errors_p (display); |
2f65feb6 | 614 | UNBLOCK_INPUT; |
ede4db72 | 615 | |
afe1529d RS |
616 | if (had_errors) |
617 | break; | |
618 | ||
2a1a4c9d | 619 | /* Now wait for the requester to ack this chunk by deleting the |
ede4db72 RS |
620 | property. This can run random lisp code or signal. |
621 | */ | |
d1f21a66 | 622 | wait_for_property_change (wait_object); |
ede4db72 | 623 | } |
2a1a4c9d | 624 | /* Now write a zero-length chunk to the property to tell the requester |
ede4db72 RS |
625 | that we're done. */ |
626 | #if 0 | |
627 | fprintf (stderr," INCR done\n"); | |
628 | #endif | |
2f65feb6 | 629 | BLOCK_INPUT; |
ede4db72 RS |
630 | if (! waiting_for_other_props_on_window (display, window)) |
631 | XSelectInput (display, window, 0L); | |
632 | ||
633 | XChangeProperty (display, window, reply.property, type, format, | |
634 | PropModeReplace, data, 0); | |
635 | } | |
afe1529d RS |
636 | |
637 | XFlush (display); | |
5a499696 | 638 | x_uncatch_errors (display, count); |
afe1529d | 639 | UNBLOCK_INPUT; |
ede4db72 RS |
640 | } |
641 | \f | |
642 | /* Handle a SelectionRequest event EVENT. | |
643 | This is called from keyboard.c when such an event is found in the queue. */ | |
644 | ||
645 | void | |
646 | x_handle_selection_request (event) | |
647 | struct input_event *event; | |
648 | { | |
649 | struct gcpro gcpro1, gcpro2, gcpro3; | |
9d2d1dd8 | 650 | Lisp_Object local_selection_data; |
ede4db72 | 651 | Lisp_Object selection_symbol; |
9d2d1dd8 KH |
652 | Lisp_Object target_symbol; |
653 | Lisp_Object converted_selection; | |
ede4db72 | 654 | Time local_selection_time; |
9d2d1dd8 | 655 | Lisp_Object successful_p; |
ede4db72 | 656 | int count; |
5c3a351a RS |
657 | struct x_display_info *dpyinfo |
658 | = x_display_info_for_display (SELECTION_EVENT_DISPLAY (event)); | |
ede4db72 | 659 | |
9d2d1dd8 KH |
660 | local_selection_data = Qnil; |
661 | target_symbol = Qnil; | |
662 | converted_selection = Qnil; | |
663 | successful_p = Qnil; | |
664 | ||
ede4db72 RS |
665 | GCPRO3 (local_selection_data, converted_selection, target_symbol); |
666 | ||
5c3a351a RS |
667 | selection_symbol = x_atom_to_symbol (dpyinfo, |
668 | SELECTION_EVENT_DISPLAY (event), | |
ede4db72 RS |
669 | SELECTION_EVENT_SELECTION (event)); |
670 | ||
671 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
ede4db72 RS |
672 | |
673 | if (NILP (local_selection_data)) | |
674 | { | |
675 | /* Someone asked for the selection, but we don't have it any more. | |
676 | */ | |
677 | x_decline_selection_request (event); | |
678 | goto DONE; | |
679 | } | |
680 | ||
681 | local_selection_time = (Time) | |
682 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
683 | ||
684 | if (SELECTION_EVENT_TIME (event) != CurrentTime | |
7da64e5c | 685 | && local_selection_time > SELECTION_EVENT_TIME (event)) |
ede4db72 RS |
686 | { |
687 | /* Someone asked for the selection, and we have one, but not the one | |
688 | they're looking for. | |
689 | */ | |
690 | x_decline_selection_request (event); | |
691 | goto DONE; | |
692 | } | |
693 | ||
694 | count = specpdl_ptr - specpdl; | |
695 | x_selection_current_request = event; | |
696 | record_unwind_protect (x_selection_request_lisp_error, Qnil); | |
697 | ||
5c3a351a | 698 | target_symbol = x_atom_to_symbol (dpyinfo, SELECTION_EVENT_DISPLAY (event), |
ede4db72 RS |
699 | SELECTION_EVENT_TARGET (event)); |
700 | ||
701 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
702 | if (EQ (target_symbol, QMULTIPLE)) | |
703 | target_symbol = fetch_multiple_target (event); | |
704 | #endif | |
705 | ||
706 | /* Convert lisp objects back into binary data */ | |
707 | ||
708 | converted_selection | |
709 | = x_get_local_selection (selection_symbol, target_symbol); | |
710 | ||
711 | if (! NILP (converted_selection)) | |
712 | { | |
713 | unsigned char *data; | |
714 | unsigned int size; | |
715 | int format; | |
716 | Atom type; | |
aca39f42 RS |
717 | int nofree; |
718 | ||
2f65feb6 RS |
719 | lisp_data_to_selection_data (SELECTION_EVENT_DISPLAY (event), |
720 | converted_selection, | |
aca39f42 | 721 | &data, &type, &size, &format, &nofree); |
ede4db72 RS |
722 | |
723 | x_reply_selection_request (event, format, data, size, type); | |
724 | successful_p = Qt; | |
725 | ||
726 | /* Indicate we have successfully processed this event. */ | |
7da64e5c | 727 | x_selection_current_request = 0; |
ede4db72 | 728 | |
002bbc0e | 729 | /* Use free, not XFree, because lisp_data_to_selection_data |
0158abbc | 730 | calls xmalloc itself. */ |
aca39f42 | 731 | if (!nofree) |
002bbc0e | 732 | free (data); |
ede4db72 RS |
733 | } |
734 | unbind_to (count, Qnil); | |
735 | ||
736 | DONE: | |
737 | ||
738 | UNGCPRO; | |
739 | ||
740 | /* Let random lisp code notice that the selection has been asked for. */ | |
741 | { | |
9d2d1dd8 KH |
742 | Lisp_Object rest; |
743 | rest = Vx_sent_selection_hooks; | |
ede4db72 RS |
744 | if (!EQ (rest, Qunbound)) |
745 | for (; CONSP (rest); rest = Fcdr (rest)) | |
746 | call3 (Fcar (rest), selection_symbol, target_symbol, successful_p); | |
747 | } | |
748 | } | |
749 | \f | |
750 | /* Handle a SelectionClear event EVENT, which indicates that some other | |
751 | client cleared out our previously asserted selection. | |
752 | This is called from keyboard.c when such an event is found in the queue. */ | |
753 | ||
754 | void | |
755 | x_handle_selection_clear (event) | |
756 | struct input_event *event; | |
757 | { | |
758 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
759 | Atom selection = SELECTION_EVENT_SELECTION (event); | |
760 | Time changed_owner_time = SELECTION_EVENT_TIME (event); | |
761 | ||
762 | Lisp_Object selection_symbol, local_selection_data; | |
763 | Time local_selection_time; | |
5c3a351a | 764 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 765 | |
5c3a351a | 766 | selection_symbol = x_atom_to_symbol (dpyinfo, display, selection); |
ede4db72 RS |
767 | |
768 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
769 | ||
770 | /* Well, we already believe that we don't own it, so that's just fine. */ | |
771 | if (NILP (local_selection_data)) return; | |
772 | ||
773 | local_selection_time = (Time) | |
774 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); | |
775 | ||
776 | /* This SelectionClear is for a selection that we no longer own, so we can | |
777 | disregard it. (That is, we have reasserted the selection since this | |
778 | request was generated.) */ | |
779 | ||
780 | if (changed_owner_time != CurrentTime | |
781 | && local_selection_time > changed_owner_time) | |
782 | return; | |
783 | ||
784 | /* Otherwise, we're really honest and truly being told to drop it. | |
785 | Don't use Fdelq as that may QUIT;. */ | |
786 | ||
787 | if (EQ (local_selection_data, Fcar (Vselection_alist))) | |
788 | Vselection_alist = Fcdr (Vselection_alist); | |
789 | else | |
790 | { | |
791 | Lisp_Object rest; | |
792 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
793 | if (EQ (local_selection_data, Fcar (XCONS (rest)->cdr))) | |
794 | { | |
795 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
796 | break; | |
797 | } | |
798 | } | |
799 | ||
800 | /* Let random lisp code notice that the selection has been stolen. */ | |
801 | ||
802 | { | |
d1f21a66 RS |
803 | Lisp_Object rest; |
804 | rest = Vx_lost_selection_hooks; | |
ede4db72 | 805 | if (!EQ (rest, Qunbound)) |
d1f21a66 RS |
806 | { |
807 | for (; CONSP (rest); rest = Fcdr (rest)) | |
808 | call1 (Fcar (rest), selection_symbol); | |
7c6b2ea4 | 809 | prepare_menu_bars (); |
d1f21a66 RS |
810 | redisplay_preserve_echo_area (); |
811 | } | |
ede4db72 RS |
812 | } |
813 | } | |
814 | ||
118bd841 RS |
815 | /* Clear all selections that were made from frame F. |
816 | We do this when about to delete a frame. */ | |
817 | ||
818 | void | |
819 | x_clear_frame_selections (f) | |
820 | FRAME_PTR f; | |
821 | { | |
822 | Lisp_Object frame; | |
823 | Lisp_Object rest; | |
824 | ||
90851bbe | 825 | XSETFRAME (frame, f); |
118bd841 RS |
826 | |
827 | /* Otherwise, we're really honest and truly being told to drop it. | |
828 | Don't use Fdelq as that may QUIT;. */ | |
829 | ||
0d199f9c RS |
830 | /* Delete elements from the beginning of Vselection_alist. */ |
831 | while (!NILP (Vselection_alist) | |
832 | && EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (Vselection_alist))))))) | |
833 | { | |
834 | /* Let random Lisp code notice that the selection has been stolen. */ | |
835 | Lisp_Object hooks, selection_symbol; | |
836 | ||
837 | hooks = Vx_lost_selection_hooks; | |
838 | selection_symbol = Fcar (Fcar (Vselection_alist)); | |
839 | ||
840 | if (!EQ (hooks, Qunbound)) | |
841 | { | |
842 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
843 | call1 (Fcar (hooks), selection_symbol); | |
996b804d MB |
844 | #if 0 /* This can crash when deleting a frame |
845 | from x_connection_closed. Anyway, it seems unnecessary; | |
846 | something else should cause a redisplay. */ | |
0d199f9c | 847 | redisplay_preserve_echo_area (); |
996b804d | 848 | #endif |
0d199f9c RS |
849 | } |
850 | ||
851 | Vselection_alist = Fcdr (Vselection_alist); | |
852 | } | |
853 | ||
854 | /* Delete elements after the beginning of Vselection_alist. */ | |
118bd841 RS |
855 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) |
856 | if (EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (XCONS (rest)->cdr))))))) | |
857 | { | |
858 | /* Let random Lisp code notice that the selection has been stolen. */ | |
859 | Lisp_Object hooks, selection_symbol; | |
860 | ||
861 | hooks = Vx_lost_selection_hooks; | |
0d199f9c | 862 | selection_symbol = Fcar (Fcar (XCONS (rest)->cdr)); |
118bd841 RS |
863 | |
864 | if (!EQ (hooks, Qunbound)) | |
865 | { | |
866 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
867 | call1 (Fcar (hooks), selection_symbol); | |
996b804d | 868 | #if 0 /* See above */ |
118bd841 | 869 | redisplay_preserve_echo_area (); |
996b804d | 870 | #endif |
118bd841 RS |
871 | } |
872 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); | |
873 | break; | |
874 | } | |
875 | } | |
ede4db72 | 876 | \f |
ede4db72 RS |
877 | /* Nonzero if any properties for DISPLAY and WINDOW |
878 | are on the list of what we are waiting for. */ | |
879 | ||
880 | static int | |
881 | waiting_for_other_props_on_window (display, window) | |
882 | Display *display; | |
883 | Window window; | |
884 | { | |
885 | struct prop_location *rest = property_change_wait_list; | |
886 | while (rest) | |
887 | if (rest->display == display && rest->window == window) | |
888 | return 1; | |
889 | else | |
890 | rest = rest->next; | |
891 | return 0; | |
892 | } | |
893 | ||
894 | /* Add an entry to the list of property changes we are waiting for. | |
895 | DISPLAY, WINDOW, PROPERTY, STATE describe what we will wait for. | |
896 | The return value is a number that uniquely identifies | |
897 | this awaited property change. */ | |
898 | ||
d1f21a66 | 899 | static struct prop_location * |
ede4db72 RS |
900 | expect_property_change (display, window, property, state) |
901 | Display *display; | |
902 | Window window; | |
6c070502 | 903 | Atom property; |
ede4db72 RS |
904 | int state; |
905 | { | |
906 | struct prop_location *pl | |
907 | = (struct prop_location *) xmalloc (sizeof (struct prop_location)); | |
2f65feb6 | 908 | pl->identifier = ++prop_location_identifier; |
ede4db72 RS |
909 | pl->display = display; |
910 | pl->window = window; | |
911 | pl->property = property; | |
912 | pl->desired_state = state; | |
913 | pl->next = property_change_wait_list; | |
d1f21a66 | 914 | pl->arrived = 0; |
ede4db72 | 915 | property_change_wait_list = pl; |
d1f21a66 | 916 | return pl; |
ede4db72 RS |
917 | } |
918 | ||
919 | /* Delete an entry from the list of property changes we are waiting for. | |
2f65feb6 | 920 | IDENTIFIER is the number that uniquely identifies the entry. */ |
ede4db72 RS |
921 | |
922 | static void | |
d1f21a66 RS |
923 | unexpect_property_change (location) |
924 | struct prop_location *location; | |
ede4db72 RS |
925 | { |
926 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
927 | while (rest) | |
928 | { | |
d1f21a66 | 929 | if (rest == location) |
ede4db72 RS |
930 | { |
931 | if (prev) | |
932 | prev->next = rest->next; | |
933 | else | |
934 | property_change_wait_list = rest->next; | |
002bbc0e | 935 | free (rest); |
ede4db72 RS |
936 | return; |
937 | } | |
938 | prev = rest; | |
939 | rest = rest->next; | |
940 | } | |
941 | } | |
942 | ||
2f65feb6 RS |
943 | /* Remove the property change expectation element for IDENTIFIER. */ |
944 | ||
945 | static Lisp_Object | |
946 | wait_for_property_change_unwind (identifierval) | |
947 | Lisp_Object identifierval; | |
948 | { | |
c4898489 KH |
949 | unexpect_property_change ((struct prop_location *) |
950 | (XFASTINT (XCONS (identifierval)->car) << 16 | |
951 | | XFASTINT (XCONS (identifierval)->cdr))); | |
ab552306 | 952 | return Qnil; |
2f65feb6 RS |
953 | } |
954 | ||
ede4db72 | 955 | /* Actually wait for a property change. |
2f65feb6 | 956 | IDENTIFIER should be the value that expect_property_change returned. */ |
ede4db72 RS |
957 | |
958 | static void | |
d1f21a66 RS |
959 | wait_for_property_change (location) |
960 | struct prop_location *location; | |
ede4db72 | 961 | { |
2f65feb6 RS |
962 | int secs, usecs; |
963 | int count = specpdl_ptr - specpdl; | |
d1f21a66 RS |
964 | Lisp_Object tem; |
965 | ||
c4898489 KH |
966 | tem = Fcons (Qnil, Qnil); |
967 | XSETFASTINT (XCONS (tem)->car, (EMACS_UINT)location >> 16); | |
968 | XSETFASTINT (XCONS (tem)->cdr, (EMACS_UINT)location & 0xffff); | |
2f65feb6 RS |
969 | |
970 | /* Make sure to do unexpect_property_change if we quit or err. */ | |
d1f21a66 | 971 | record_unwind_protect (wait_for_property_change_unwind, tem); |
2f65feb6 | 972 | |
ede4db72 | 973 | XCONS (property_change_reply)->car = Qnil; |
2f65feb6 | 974 | |
afe1529d RS |
975 | property_change_reply_object = location; |
976 | /* If the event we are waiting for arrives beyond here, it will set | |
977 | property_change_reply, because property_change_reply_object says so. */ | |
d1f21a66 RS |
978 | if (! location->arrived) |
979 | { | |
d1f21a66 RS |
980 | secs = x_selection_timeout / 1000; |
981 | usecs = (x_selection_timeout % 1000) * 1000; | |
982 | wait_reading_process_input (secs, usecs, property_change_reply, 0); | |
983 | ||
984 | if (NILP (XCONS (property_change_reply)->car)) | |
606140dd | 985 | error ("Timed out waiting for property-notify event"); |
d1f21a66 | 986 | } |
2f65feb6 RS |
987 | |
988 | unbind_to (count, Qnil); | |
ede4db72 RS |
989 | } |
990 | ||
991 | /* Called from XTread_socket in response to a PropertyNotify event. */ | |
992 | ||
993 | void | |
994 | x_handle_property_notify (event) | |
995 | XPropertyEvent *event; | |
996 | { | |
997 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
998 | while (rest) | |
999 | { | |
1000 | if (rest->property == event->atom | |
1001 | && rest->window == event->window | |
1002 | && rest->display == event->display | |
1003 | && rest->desired_state == event->state) | |
1004 | { | |
1005 | #if 0 | |
1006 | fprintf (stderr, "Saw expected prop-%s on %s\n", | |
1007 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a | 1008 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, event->display, |
ede4db72 RS |
1009 | event->atom)) |
1010 | ->name->data); | |
1011 | #endif | |
1012 | ||
d1f21a66 RS |
1013 | rest->arrived = 1; |
1014 | ||
ede4db72 RS |
1015 | /* If this is the one wait_for_property_change is waiting for, |
1016 | tell it to wake up. */ | |
d1f21a66 | 1017 | if (rest == property_change_reply_object) |
ede4db72 RS |
1018 | XCONS (property_change_reply)->car = Qt; |
1019 | ||
1020 | if (prev) | |
1021 | prev->next = rest->next; | |
1022 | else | |
1023 | property_change_wait_list = rest->next; | |
002bbc0e | 1024 | free (rest); |
ede4db72 RS |
1025 | return; |
1026 | } | |
1027 | prev = rest; | |
1028 | rest = rest->next; | |
1029 | } | |
1030 | #if 0 | |
1031 | fprintf (stderr, "Saw UNexpected prop-%s on %s\n", | |
1032 | (event->state == PropertyDelete ? "delete" : "change"), | |
5c3a351a RS |
1033 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, |
1034 | event->display, event->atom)) | |
ede4db72 RS |
1035 | ->name->data); |
1036 | #endif | |
1037 | } | |
1038 | ||
1039 | ||
1040 | \f | |
1041 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1042 | ||
1043 | static Lisp_Object | |
1044 | fetch_multiple_target (event) | |
1045 | XSelectionRequestEvent *event; | |
1046 | { | |
1047 | Display *display = event->display; | |
5d0ba25b | 1048 | Window window = event->requestor; |
ede4db72 RS |
1049 | Atom target = event->target; |
1050 | Atom selection_atom = event->selection; | |
1051 | int result; | |
1052 | ||
1053 | return | |
1054 | Fcons (QMULTIPLE, | |
1055 | x_get_window_property_as_lisp_data (display, window, target, | |
1056 | QMULTIPLE, selection_atom)); | |
1057 | } | |
1058 | ||
1059 | static Lisp_Object | |
1060 | copy_multiple_data (obj) | |
1061 | Lisp_Object obj; | |
1062 | { | |
1063 | Lisp_Object vec; | |
1064 | int i; | |
1065 | int size; | |
1066 | if (CONSP (obj)) | |
1067 | return Fcons (XCONS (obj)->car, copy_multiple_data (XCONS (obj)->cdr)); | |
1068 | ||
1069 | CHECK_VECTOR (obj, 0); | |
1070 | vec = Fmake_vector (size = XVECTOR (obj)->size, Qnil); | |
1071 | for (i = 0; i < size; i++) | |
1072 | { | |
1073 | Lisp_Object vec2 = XVECTOR (obj)->contents [i]; | |
1074 | CHECK_VECTOR (vec2, 0); | |
1075 | if (XVECTOR (vec2)->size != 2) | |
1076 | /* ??? Confusing error message */ | |
1077 | Fsignal (Qerror, Fcons (build_string ("vectors must be of length 2"), | |
1078 | Fcons (vec2, Qnil))); | |
1079 | XVECTOR (vec)->contents [i] = Fmake_vector (2, Qnil); | |
1080 | XVECTOR (XVECTOR (vec)->contents [i])->contents [0] | |
1081 | = XVECTOR (vec2)->contents [0]; | |
1082 | XVECTOR (XVECTOR (vec)->contents [i])->contents [1] | |
1083 | = XVECTOR (vec2)->contents [1]; | |
1084 | } | |
1085 | return vec; | |
1086 | } | |
1087 | ||
1088 | #endif | |
1089 | ||
1090 | \f | |
1091 | /* Variables for communication with x_handle_selection_notify. */ | |
1092 | static Atom reading_which_selection; | |
1093 | static Lisp_Object reading_selection_reply; | |
1094 | static Window reading_selection_window; | |
1095 | ||
1096 | /* Do protocol to read selection-data from the server. | |
1097 | Converts this to Lisp data and returns it. */ | |
1098 | ||
1099 | static Lisp_Object | |
1100 | x_get_foreign_selection (selection_symbol, target_type) | |
1101 | Lisp_Object selection_symbol, target_type; | |
1102 | { | |
5d0ba25b | 1103 | Window requestor_window = FRAME_X_WINDOW (selected_frame); |
3834c318 | 1104 | Display *display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1105 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
5d0ba25b | 1106 | Time requestor_time = last_event_timestamp; |
5c3a351a RS |
1107 | Atom target_property = dpyinfo->Xatom_EMACS_TMP; |
1108 | Atom selection_atom = symbol_to_x_atom (dpyinfo, display, selection_symbol); | |
ede4db72 | 1109 | Atom type_atom; |
80da0190 | 1110 | int secs, usecs; |
5a499696 | 1111 | int count; |
55b2d45d | 1112 | Lisp_Object frame; |
ede4db72 RS |
1113 | |
1114 | if (CONSP (target_type)) | |
5c3a351a | 1115 | type_atom = symbol_to_x_atom (dpyinfo, display, XCONS (target_type)->car); |
ede4db72 | 1116 | else |
5c3a351a | 1117 | type_atom = symbol_to_x_atom (dpyinfo, display, target_type); |
ede4db72 RS |
1118 | |
1119 | BLOCK_INPUT; | |
5a499696 | 1120 | count = x_catch_errors (display); |
ede4db72 | 1121 | XConvertSelection (display, selection_atom, type_atom, target_property, |
5d0ba25b | 1122 | requestor_window, requestor_time); |
5c3a351a | 1123 | XFlush (display); |
ede4db72 RS |
1124 | |
1125 | /* Prepare to block until the reply has been read. */ | |
5d0ba25b | 1126 | reading_selection_window = requestor_window; |
ede4db72 RS |
1127 | reading_which_selection = selection_atom; |
1128 | XCONS (reading_selection_reply)->car = Qnil; | |
55b2d45d RS |
1129 | |
1130 | frame = some_frame_on_display (dpyinfo); | |
1131 | ||
1132 | /* If the display no longer has frames, we can't expect | |
1133 | to get many more selection requests from it, so don't | |
1134 | bother trying to queue them. */ | |
1135 | if (!NILP (frame)) | |
1136 | { | |
1137 | x_start_queuing_selection_requests (display); | |
1138 | ||
1139 | record_unwind_protect (queue_selection_requests_unwind, | |
1140 | frame); | |
1141 | } | |
ede4db72 RS |
1142 | UNBLOCK_INPUT; |
1143 | ||
80da0190 RS |
1144 | /* This allows quits. Also, don't wait forever. */ |
1145 | secs = x_selection_timeout / 1000; | |
1146 | usecs = (x_selection_timeout % 1000) * 1000; | |
1147 | wait_reading_process_input (secs, usecs, reading_selection_reply, 0); | |
ede4db72 | 1148 | |
7c6b2ea4 | 1149 | BLOCK_INPUT; |
a7b24d46 | 1150 | x_check_errors (display, "Cannot get selection: %s"); |
5a499696 | 1151 | x_uncatch_errors (display, count); |
7c6b2ea4 RS |
1152 | UNBLOCK_INPUT; |
1153 | ||
ede4db72 | 1154 | if (NILP (XCONS (reading_selection_reply)->car)) |
606140dd KH |
1155 | error ("Timed out waiting for reply from selection owner"); |
1156 | if (EQ (XCONS (reading_selection_reply)->car, Qlambda)) | |
1157 | error ("No `%s' selection", XSYMBOL (selection_symbol)->name->data); | |
ede4db72 RS |
1158 | |
1159 | /* Otherwise, the selection is waiting for us on the requested property. */ | |
1160 | return | |
5d0ba25b | 1161 | x_get_window_property_as_lisp_data (display, requestor_window, |
ede4db72 RS |
1162 | target_property, target_type, |
1163 | selection_atom); | |
1164 | } | |
1165 | \f | |
1166 | /* Subroutines of x_get_window_property_as_lisp_data */ | |
1167 | ||
002bbc0e | 1168 | /* Use free, not XFree, to free the data obtained with this function. */ |
0158abbc | 1169 | |
ede4db72 RS |
1170 | static void |
1171 | x_get_window_property (display, window, property, data_ret, bytes_ret, | |
1172 | actual_type_ret, actual_format_ret, actual_size_ret, | |
1173 | delete_p) | |
1174 | Display *display; | |
1175 | Window window; | |
1176 | Atom property; | |
1177 | unsigned char **data_ret; | |
1178 | int *bytes_ret; | |
1179 | Atom *actual_type_ret; | |
1180 | int *actual_format_ret; | |
1181 | unsigned long *actual_size_ret; | |
1182 | int delete_p; | |
1183 | { | |
1184 | int total_size; | |
1185 | unsigned long bytes_remaining; | |
1186 | int offset = 0; | |
1187 | unsigned char *tmp_data = 0; | |
1188 | int result; | |
1189 | int buffer_size = SELECTION_QUANTUM (display); | |
1190 | if (buffer_size > MAX_SELECTION_QUANTUM) buffer_size = MAX_SELECTION_QUANTUM; | |
1191 | ||
1192 | BLOCK_INPUT; | |
1193 | /* First probe the thing to find out how big it is. */ | |
1194 | result = XGetWindowProperty (display, window, property, | |
137edb72 | 1195 | 0L, 0L, False, AnyPropertyType, |
ede4db72 RS |
1196 | actual_type_ret, actual_format_ret, |
1197 | actual_size_ret, | |
1198 | &bytes_remaining, &tmp_data); | |
ede4db72 RS |
1199 | if (result != Success) |
1200 | { | |
2f65feb6 | 1201 | UNBLOCK_INPUT; |
ede4db72 RS |
1202 | *data_ret = 0; |
1203 | *bytes_ret = 0; | |
1204 | return; | |
1205 | } | |
0158abbc RS |
1206 | /* This was allocated by Xlib, so use XFree. */ |
1207 | XFree ((char *) tmp_data); | |
ede4db72 RS |
1208 | |
1209 | if (*actual_type_ret == None || *actual_format_ret == 0) | |
1210 | { | |
2f65feb6 | 1211 | UNBLOCK_INPUT; |
ede4db72 RS |
1212 | return; |
1213 | } | |
1214 | ||
1215 | total_size = bytes_remaining + 1; | |
1216 | *data_ret = (unsigned char *) xmalloc (total_size); | |
1217 | ||
2a1a4c9d | 1218 | /* Now read, until we've gotten it all. */ |
ede4db72 RS |
1219 | while (bytes_remaining) |
1220 | { | |
1221 | #if 0 | |
1222 | int last = bytes_remaining; | |
1223 | #endif | |
1224 | result | |
1225 | = XGetWindowProperty (display, window, property, | |
137edb72 | 1226 | (long)offset/4, (long)buffer_size/4, |
2f65feb6 | 1227 | False, |
ede4db72 RS |
1228 | AnyPropertyType, |
1229 | actual_type_ret, actual_format_ret, | |
1230 | actual_size_ret, &bytes_remaining, &tmp_data); | |
1231 | #if 0 | |
1232 | fprintf (stderr, "<< read %d\n", last-bytes_remaining); | |
1233 | #endif | |
1234 | /* If this doesn't return Success at this point, it means that | |
1235 | some clod deleted the selection while we were in the midst of | |
1236 | reading it. Deal with that, I guess.... | |
1237 | */ | |
1238 | if (result != Success) break; | |
1239 | *actual_size_ret *= *actual_format_ret / 8; | |
1240 | bcopy (tmp_data, (*data_ret) + offset, *actual_size_ret); | |
1241 | offset += *actual_size_ret; | |
0158abbc RS |
1242 | /* This was allocated by Xlib, so use XFree. */ |
1243 | XFree ((char *) tmp_data); | |
ede4db72 | 1244 | } |
2f65feb6 | 1245 | |
5c3a351a | 1246 | XFlush (display); |
ede4db72 RS |
1247 | UNBLOCK_INPUT; |
1248 | *bytes_ret = offset; | |
1249 | } | |
1250 | \f | |
002bbc0e | 1251 | /* Use free, not XFree, to free the data obtained with this function. */ |
0158abbc | 1252 | |
ede4db72 RS |
1253 | static void |
1254 | receive_incremental_selection (display, window, property, target_type, | |
1255 | min_size_bytes, data_ret, size_bytes_ret, | |
1256 | type_ret, format_ret, size_ret) | |
1257 | Display *display; | |
1258 | Window window; | |
1259 | Atom property; | |
1260 | Lisp_Object target_type; /* for error messages only */ | |
1261 | unsigned int min_size_bytes; | |
1262 | unsigned char **data_ret; | |
1263 | int *size_bytes_ret; | |
1264 | Atom *type_ret; | |
1265 | unsigned long *size_ret; | |
1266 | int *format_ret; | |
1267 | { | |
1268 | int offset = 0; | |
d1f21a66 | 1269 | struct prop_location *wait_object; |
ede4db72 RS |
1270 | *size_bytes_ret = min_size_bytes; |
1271 | *data_ret = (unsigned char *) xmalloc (*size_bytes_ret); | |
1272 | #if 0 | |
1273 | fprintf (stderr, "\nread INCR %d\n", min_size_bytes); | |
1274 | #endif | |
2f65feb6 RS |
1275 | |
1276 | /* At this point, we have read an INCR property. | |
1277 | Delete the property to ack it. | |
1278 | (But first, prepare to receive the next event in this handshake.) | |
ede4db72 RS |
1279 | |
1280 | Now, we must loop, waiting for the sending window to put a value on | |
1281 | that property, then reading the property, then deleting it to ack. | |
1282 | We are done when the sender places a property of length 0. | |
1283 | */ | |
2f65feb6 RS |
1284 | BLOCK_INPUT; |
1285 | XSelectInput (display, window, STANDARD_EVENT_SET | PropertyChangeMask); | |
1286 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1287 | wait_object = expect_property_change (display, window, property, |
1288 | PropertyNewValue); | |
5c3a351a | 1289 | XFlush (display); |
2f65feb6 RS |
1290 | UNBLOCK_INPUT; |
1291 | ||
ede4db72 RS |
1292 | while (1) |
1293 | { | |
1294 | unsigned char *tmp_data; | |
1295 | int tmp_size_bytes; | |
d1f21a66 | 1296 | wait_for_property_change (wait_object); |
ede4db72 | 1297 | /* expect it again immediately, because x_get_window_property may |
2a1a4c9d | 1298 | .. no it won't, I don't get it. |
ede4db72 RS |
1299 | .. Ok, I get it now, the Xt code that implements INCR is broken. |
1300 | */ | |
ede4db72 RS |
1301 | x_get_window_property (display, window, property, |
1302 | &tmp_data, &tmp_size_bytes, | |
1303 | type_ret, format_ret, size_ret, 1); | |
1304 | ||
1305 | if (tmp_size_bytes == 0) /* we're done */ | |
1306 | { | |
1307 | #if 0 | |
1308 | fprintf (stderr, " read INCR done\n"); | |
1309 | #endif | |
2f65feb6 RS |
1310 | if (! waiting_for_other_props_on_window (display, window)) |
1311 | XSelectInput (display, window, STANDARD_EVENT_SET); | |
d1f21a66 | 1312 | unexpect_property_change (wait_object); |
002bbc0e | 1313 | /* Use free, not XFree, because x_get_window_property |
0158abbc | 1314 | calls xmalloc itself. */ |
002bbc0e | 1315 | if (tmp_data) free (tmp_data); |
ede4db72 RS |
1316 | break; |
1317 | } | |
2f65feb6 RS |
1318 | |
1319 | BLOCK_INPUT; | |
1320 | XDeleteProperty (display, window, property); | |
d1f21a66 RS |
1321 | wait_object = expect_property_change (display, window, property, |
1322 | PropertyNewValue); | |
5c3a351a | 1323 | XFlush (display); |
2f65feb6 RS |
1324 | UNBLOCK_INPUT; |
1325 | ||
ede4db72 RS |
1326 | #if 0 |
1327 | fprintf (stderr, " read INCR %d\n", tmp_size_bytes); | |
1328 | #endif | |
1329 | if (*size_bytes_ret < offset + tmp_size_bytes) | |
1330 | { | |
1331 | #if 0 | |
1332 | fprintf (stderr, " read INCR realloc %d -> %d\n", | |
1333 | *size_bytes_ret, offset + tmp_size_bytes); | |
1334 | #endif | |
1335 | *size_bytes_ret = offset + tmp_size_bytes; | |
1336 | *data_ret = (unsigned char *) xrealloc (*data_ret, *size_bytes_ret); | |
1337 | } | |
018cfa07 | 1338 | bcopy (tmp_data, (*data_ret) + offset, tmp_size_bytes); |
ede4db72 | 1339 | offset += tmp_size_bytes; |
002bbc0e | 1340 | /* Use free, not XFree, because x_get_window_property |
0158abbc | 1341 | calls xmalloc itself. */ |
002bbc0e | 1342 | free (tmp_data); |
ede4db72 RS |
1343 | } |
1344 | } | |
1345 | \f | |
1346 | /* Once a requested selection is "ready" (we got a SelectionNotify event), | |
1347 | fetch value from property PROPERTY of X window WINDOW on display DISPLAY. | |
1348 | TARGET_TYPE and SELECTION_ATOM are used in error message if this fails. */ | |
1349 | ||
1350 | static Lisp_Object | |
1351 | x_get_window_property_as_lisp_data (display, window, property, target_type, | |
1352 | selection_atom) | |
1353 | Display *display; | |
1354 | Window window; | |
1355 | Atom property; | |
1356 | Lisp_Object target_type; /* for error messages only */ | |
1357 | Atom selection_atom; /* for error messages only */ | |
1358 | { | |
1359 | Atom actual_type; | |
1360 | int actual_format; | |
1361 | unsigned long actual_size; | |
1362 | unsigned char *data = 0; | |
1363 | int bytes = 0; | |
1364 | Lisp_Object val; | |
5c3a351a | 1365 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 RS |
1366 | |
1367 | x_get_window_property (display, window, property, &data, &bytes, | |
1368 | &actual_type, &actual_format, &actual_size, 1); | |
1369 | if (! data) | |
1370 | { | |
1371 | int there_is_a_selection_owner; | |
1372 | BLOCK_INPUT; | |
1373 | there_is_a_selection_owner | |
1374 | = XGetSelectionOwner (display, selection_atom); | |
1375 | UNBLOCK_INPUT; | |
5a499696 RS |
1376 | Fsignal (Qerror, |
1377 | there_is_a_selection_owner | |
1378 | ? Fcons (build_string ("selection owner couldn't convert"), | |
ede4db72 RS |
1379 | actual_type |
1380 | ? Fcons (target_type, | |
5c3a351a RS |
1381 | Fcons (x_atom_to_symbol (dpyinfo, display, |
1382 | actual_type), | |
ede4db72 RS |
1383 | Qnil)) |
1384 | : Fcons (target_type, Qnil)) | |
5a499696 RS |
1385 | : Fcons (build_string ("no selection"), |
1386 | Fcons (x_atom_to_symbol (dpyinfo, display, | |
1387 | selection_atom), | |
1388 | Qnil))); | |
ede4db72 RS |
1389 | } |
1390 | ||
5c3a351a | 1391 | if (actual_type == dpyinfo->Xatom_INCR) |
ede4db72 RS |
1392 | { |
1393 | /* That wasn't really the data, just the beginning. */ | |
1394 | ||
1395 | unsigned int min_size_bytes = * ((unsigned int *) data); | |
1396 | BLOCK_INPUT; | |
002bbc0e | 1397 | /* Use free, not XFree, because x_get_window_property |
0158abbc | 1398 | calls xmalloc itself. */ |
002bbc0e | 1399 | free ((char *) data); |
ede4db72 RS |
1400 | UNBLOCK_INPUT; |
1401 | receive_incremental_selection (display, window, property, target_type, | |
1402 | min_size_bytes, &data, &bytes, | |
1403 | &actual_type, &actual_format, | |
1404 | &actual_size); | |
1405 | } | |
1406 | ||
2f65feb6 RS |
1407 | BLOCK_INPUT; |
1408 | XDeleteProperty (display, window, property); | |
5c3a351a | 1409 | XFlush (display); |
2f65feb6 RS |
1410 | UNBLOCK_INPUT; |
1411 | ||
ede4db72 RS |
1412 | /* It's been read. Now convert it to a lisp object in some semi-rational |
1413 | manner. */ | |
1414 | val = selection_data_to_lisp_data (display, data, bytes, | |
1415 | actual_type, actual_format); | |
1416 | ||
002bbc0e | 1417 | /* Use free, not XFree, because x_get_window_property |
0158abbc | 1418 | calls xmalloc itself. */ |
002bbc0e | 1419 | free ((char *) data); |
ede4db72 RS |
1420 | return val; |
1421 | } | |
1422 | \f | |
1423 | /* These functions convert from the selection data read from the server into | |
1424 | something that we can use from Lisp, and vice versa. | |
1425 | ||
1426 | Type: Format: Size: Lisp Type: | |
1427 | ----- ------- ----- ----------- | |
1428 | * 8 * String | |
1429 | ATOM 32 1 Symbol | |
1430 | ATOM 32 > 1 Vector of Symbols | |
1431 | * 16 1 Integer | |
1432 | * 16 > 1 Vector of Integers | |
1433 | * 32 1 if <=16 bits: Integer | |
1434 | if > 16 bits: Cons of top16, bot16 | |
1435 | * 32 > 1 Vector of the above | |
1436 | ||
1437 | When converting a Lisp number to C, it is assumed to be of format 16 if | |
1438 | it is an integer, and of format 32 if it is a cons of two integers. | |
1439 | ||
1440 | When converting a vector of numbers from Lisp to C, it is assumed to be | |
1441 | of format 16 if every element in the vector is an integer, and is assumed | |
1442 | to be of format 32 if any element is a cons of two integers. | |
1443 | ||
1444 | When converting an object to C, it may be of the form (SYMBOL . <data>) | |
1445 | where SYMBOL is what we should claim that the type is. Format and | |
1446 | representation are as above. */ | |
1447 | ||
1448 | ||
1449 | ||
1450 | static Lisp_Object | |
1451 | selection_data_to_lisp_data (display, data, size, type, format) | |
1452 | Display *display; | |
1453 | unsigned char *data; | |
1454 | Atom type; | |
1455 | int size, format; | |
1456 | { | |
5c3a351a | 1457 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1458 | |
5c3a351a | 1459 | if (type == dpyinfo->Xatom_NULL) |
ede4db72 RS |
1460 | return QNULL; |
1461 | ||
1462 | /* Convert any 8-bit data to a string, for compactness. */ | |
1463 | else if (format == 8) | |
e6c7c988 KH |
1464 | { |
1465 | Lisp_Object str; | |
f78da51e KH |
1466 | int require_encoding = 0; |
1467 | ||
1468 | /* If TYPE is `TEXT' or `COMPOUND_TEXT', we should decode DATA | |
1469 | to Emacs internal format because DATA may be encoded in | |
1470 | compound text format. In addtion, if TYPE is `STRING' and | |
1471 | DATA contains any 8-bit Latin-1 code, we should also decode | |
1472 | it. */ | |
1473 | if (type == dpyinfo->Xatom_TEXT || type == dpyinfo->Xatom_COMPOUND_TEXT) | |
1474 | require_encoding = 1; | |
1475 | else if (type == XA_STRING) | |
1476 | { | |
1477 | int i; | |
1478 | for (i = 0; i < size; i++) | |
1479 | { | |
1480 | if (data[i] >= 0x80) | |
1481 | { | |
1482 | require_encoding = 1; | |
1483 | break; | |
1484 | } | |
1485 | } | |
1486 | } | |
1487 | if (!require_encoding) | |
e6c7c988 KH |
1488 | str = make_string ((char *) data, size); |
1489 | else | |
1490 | { | |
e6c7c988 KH |
1491 | int bufsize, dummy; |
1492 | unsigned char *buf; | |
1493 | struct coding_system coding; | |
569e0c76 | 1494 | Lisp_Object sym = intern ("iso-latin-1"); |
e6c7c988 KH |
1495 | |
1496 | setup_coding_system (Fcheck_coding_system (sym), &coding); | |
1497 | coding.last_block = 1; | |
1498 | bufsize = decoding_buffer_size (&coding, size); | |
1499 | buf = (unsigned char *) xmalloc (bufsize); | |
1500 | size = decode_coding (&coding, data, buf, size, bufsize, &dummy); | |
1501 | str = make_string ((char *) buf, size); | |
1502 | xfree (buf); | |
1503 | } | |
1504 | return str; | |
1505 | } | |
ede4db72 RS |
1506 | /* Convert a single atom to a Lisp_Symbol. Convert a set of atoms to |
1507 | a vector of symbols. | |
1508 | */ | |
1509 | else if (type == XA_ATOM) | |
1510 | { | |
1511 | int i; | |
1512 | if (size == sizeof (Atom)) | |
5c3a351a | 1513 | return x_atom_to_symbol (dpyinfo, display, *((Atom *) data)); |
ede4db72 RS |
1514 | else |
1515 | { | |
1516 | Lisp_Object v = Fmake_vector (size / sizeof (Atom), 0); | |
1517 | for (i = 0; i < size / sizeof (Atom); i++) | |
5c3a351a RS |
1518 | Faset (v, i, x_atom_to_symbol (dpyinfo, display, |
1519 | ((Atom *) data) [i])); | |
ede4db72 RS |
1520 | return v; |
1521 | } | |
1522 | } | |
1523 | ||
1524 | /* Convert a single 16 or small 32 bit number to a Lisp_Int. | |
1525 | If the number is > 16 bits, convert it to a cons of integers, | |
1526 | 16 bits in each half. | |
1527 | */ | |
1528 | else if (format == 32 && size == sizeof (long)) | |
1529 | return long_to_cons (((unsigned long *) data) [0]); | |
1530 | else if (format == 16 && size == sizeof (short)) | |
1531 | return make_number ((int) (((unsigned short *) data) [0])); | |
1532 | ||
1533 | /* Convert any other kind of data to a vector of numbers, represented | |
1534 | as above (as an integer, or a cons of two 16 bit integers.) | |
1535 | */ | |
1536 | else if (format == 16) | |
1537 | { | |
1538 | int i; | |
1539 | Lisp_Object v = Fmake_vector (size / 4, 0); | |
1540 | for (i = 0; i < size / 4; i++) | |
1541 | { | |
1542 | int j = (int) ((unsigned short *) data) [i]; | |
1543 | Faset (v, i, make_number (j)); | |
1544 | } | |
1545 | return v; | |
1546 | } | |
1547 | else | |
1548 | { | |
1549 | int i; | |
1550 | Lisp_Object v = Fmake_vector (size / 4, 0); | |
1551 | for (i = 0; i < size / 4; i++) | |
1552 | { | |
1553 | unsigned long j = ((unsigned long *) data) [i]; | |
1554 | Faset (v, i, long_to_cons (j)); | |
1555 | } | |
1556 | return v; | |
1557 | } | |
1558 | } | |
1559 | ||
1560 | ||
002bbc0e | 1561 | /* Use free, not XFree, to free the data obtained with this function. */ |
0158abbc | 1562 | |
ede4db72 RS |
1563 | static void |
1564 | lisp_data_to_selection_data (display, obj, | |
aca39f42 RS |
1565 | data_ret, type_ret, size_ret, |
1566 | format_ret, nofree_ret) | |
ede4db72 RS |
1567 | Display *display; |
1568 | Lisp_Object obj; | |
1569 | unsigned char **data_ret; | |
1570 | Atom *type_ret; | |
1571 | unsigned int *size_ret; | |
1572 | int *format_ret; | |
aca39f42 | 1573 | int *nofree_ret; |
ede4db72 RS |
1574 | { |
1575 | Lisp_Object type = Qnil; | |
5c3a351a | 1576 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
aca39f42 RS |
1577 | |
1578 | *nofree_ret = 0; | |
1579 | ||
ede4db72 RS |
1580 | if (CONSP (obj) && SYMBOLP (XCONS (obj)->car)) |
1581 | { | |
1582 | type = XCONS (obj)->car; | |
1583 | obj = XCONS (obj)->cdr; | |
1584 | if (CONSP (obj) && NILP (XCONS (obj)->cdr)) | |
1585 | obj = XCONS (obj)->car; | |
1586 | } | |
1587 | ||
1588 | if (EQ (obj, QNULL) || (EQ (type, QNULL))) | |
1589 | { /* This is not the same as declining */ | |
1590 | *format_ret = 32; | |
1591 | *size_ret = 0; | |
1592 | *data_ret = 0; | |
1593 | type = QNULL; | |
1594 | } | |
1595 | else if (STRINGP (obj)) | |
1596 | { | |
e6c7c988 KH |
1597 | /* Since we are now handling multilingual text, we must consider |
1598 | sending back compound text. */ | |
fb5e77f7 | 1599 | int charsets[MAX_CHARSET + 1]; |
e6c7c988 KH |
1600 | int num; |
1601 | ||
ede4db72 RS |
1602 | *format_ret = 8; |
1603 | *size_ret = XSTRING (obj)->size; | |
aca39f42 | 1604 | *data_ret = XSTRING (obj)->data; |
fb5e77f7 | 1605 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
e6c7c988 KH |
1606 | num = ((*size_ret <= 1) /* Check the possibility of short cut. */ |
1607 | ? 0 | |
f78da51e | 1608 | : find_charset_in_str (*data_ret, *size_ret, charsets, Qnil)); |
e6c7c988 KH |
1609 | |
1610 | if (!num || (num == 1 && charsets[CHARSET_ASCII])) | |
1611 | { | |
1612 | /* No multibyte character in OBJ. We need not encode it. */ | |
1613 | *nofree_ret = 1; | |
1614 | if (NILP (type)) type = QSTRING; | |
1615 | } | |
1616 | else | |
1617 | { | |
1618 | /* We must encode contents of OBJ to compound text format. | |
1619 | The format is compatible with what the target `STRING' | |
1620 | expects if OBJ contains only ASCII and Latin-1 | |
1621 | characters. */ | |
1622 | int bufsize, dummy; | |
1623 | unsigned char *buf; | |
1624 | struct coding_system coding; | |
569e0c76 | 1625 | Lisp_Object sym = intern ("iso-latin-1"); |
e6c7c988 KH |
1626 | |
1627 | setup_coding_system (Fcheck_coding_system (sym), &coding); | |
1628 | coding.last_block = 1; | |
1629 | bufsize = encoding_buffer_size (&coding, *size_ret); | |
1630 | buf = (unsigned char *) xmalloc (bufsize); | |
1631 | *size_ret = encode_coding (&coding, *data_ret, buf, | |
1632 | *size_ret, bufsize, &dummy); | |
1633 | *data_ret = buf; | |
1634 | if (charsets[charset_latin_iso8859_1] | |
1635 | && (num == 1 || (num == 2 && charsets[CHARSET_ASCII]))) | |
1636 | { | |
1637 | /* Ok, we can return it as `STRING'. */ | |
1638 | if (NILP (type)) type = QSTRING; | |
1639 | } | |
1640 | else | |
1641 | { | |
1642 | /* We must return it as `COMPOUND_TEXT'. */ | |
1643 | if (NILP (type)) type = QCOMPOUND_TEXT; | |
1644 | } | |
1645 | } | |
ede4db72 RS |
1646 | } |
1647 | else if (SYMBOLP (obj)) | |
1648 | { | |
1649 | *format_ret = 32; | |
1650 | *size_ret = 1; | |
1651 | *data_ret = (unsigned char *) xmalloc (sizeof (Atom) + 1); | |
1652 | (*data_ret) [sizeof (Atom)] = 0; | |
5c3a351a | 1653 | (*(Atom **) data_ret) [0] = symbol_to_x_atom (dpyinfo, display, obj); |
ede4db72 RS |
1654 | if (NILP (type)) type = QATOM; |
1655 | } | |
7da64e5c | 1656 | else if (INTEGERP (obj) |
ede4db72 RS |
1657 | && XINT (obj) < 0xFFFF |
1658 | && XINT (obj) > -0xFFFF) | |
1659 | { | |
1660 | *format_ret = 16; | |
1661 | *size_ret = 1; | |
1662 | *data_ret = (unsigned char *) xmalloc (sizeof (short) + 1); | |
1663 | (*data_ret) [sizeof (short)] = 0; | |
1664 | (*(short **) data_ret) [0] = (short) XINT (obj); | |
1665 | if (NILP (type)) type = QINTEGER; | |
1666 | } | |
a87ed99c RS |
1667 | else if (INTEGERP (obj) |
1668 | || (CONSP (obj) && INTEGERP (XCONS (obj)->car) | |
1669 | && (INTEGERP (XCONS (obj)->cdr) | |
1670 | || (CONSP (XCONS (obj)->cdr) | |
1671 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car))))) | |
ede4db72 RS |
1672 | { |
1673 | *format_ret = 32; | |
1674 | *size_ret = 1; | |
1675 | *data_ret = (unsigned char *) xmalloc (sizeof (long) + 1); | |
1676 | (*data_ret) [sizeof (long)] = 0; | |
1677 | (*(unsigned long **) data_ret) [0] = cons_to_long (obj); | |
1678 | if (NILP (type)) type = QINTEGER; | |
1679 | } | |
1680 | else if (VECTORP (obj)) | |
1681 | { | |
1682 | /* Lisp_Vectors may represent a set of ATOMs; | |
1683 | a set of 16 or 32 bit INTEGERs; | |
1684 | or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...] | |
1685 | */ | |
1686 | int i; | |
1687 | ||
1688 | if (SYMBOLP (XVECTOR (obj)->contents [0])) | |
1689 | /* This vector is an ATOM set */ | |
1690 | { | |
1691 | if (NILP (type)) type = QATOM; | |
1692 | *size_ret = XVECTOR (obj)->size; | |
1693 | *format_ret = 32; | |
1694 | *data_ret = (unsigned char *) xmalloc ((*size_ret) * sizeof (Atom)); | |
1695 | for (i = 0; i < *size_ret; i++) | |
1696 | if (SYMBOLP (XVECTOR (obj)->contents [i])) | |
1697 | (*(Atom **) data_ret) [i] | |
5c3a351a | 1698 | = symbol_to_x_atom (dpyinfo, display, XVECTOR (obj)->contents [i]); |
ede4db72 RS |
1699 | else |
1700 | Fsignal (Qerror, /* Qselection_error */ | |
1701 | Fcons (build_string | |
1702 | ("all elements of selection vector must have same type"), | |
1703 | Fcons (obj, Qnil))); | |
1704 | } | |
1705 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1706 | else if (VECTORP (XVECTOR (obj)->contents [0])) | |
1707 | /* This vector is an ATOM_PAIR set */ | |
1708 | { | |
1709 | if (NILP (type)) type = QATOM_PAIR; | |
1710 | *size_ret = XVECTOR (obj)->size; | |
1711 | *format_ret = 32; | |
1712 | *data_ret = (unsigned char *) | |
1713 | xmalloc ((*size_ret) * sizeof (Atom) * 2); | |
1714 | for (i = 0; i < *size_ret; i++) | |
1715 | if (VECTORP (XVECTOR (obj)->contents [i])) | |
1716 | { | |
1717 | Lisp_Object pair = XVECTOR (obj)->contents [i]; | |
1718 | if (XVECTOR (pair)->size != 2) | |
1719 | Fsignal (Qerror, | |
1720 | Fcons (build_string | |
1721 | ("elements of the vector must be vectors of exactly two elements"), | |
1722 | Fcons (pair, Qnil))); | |
1723 | ||
1724 | (*(Atom **) data_ret) [i * 2] | |
5c3a351a RS |
1725 | = symbol_to_x_atom (dpyinfo, display, |
1726 | XVECTOR (pair)->contents [0]); | |
ede4db72 | 1727 | (*(Atom **) data_ret) [(i * 2) + 1] |
5c3a351a RS |
1728 | = symbol_to_x_atom (dpyinfo, display, |
1729 | XVECTOR (pair)->contents [1]); | |
ede4db72 RS |
1730 | } |
1731 | else | |
1732 | Fsignal (Qerror, | |
1733 | Fcons (build_string | |
1734 | ("all elements of the vector must be of the same type"), | |
1735 | Fcons (obj, Qnil))); | |
1736 | ||
1737 | } | |
1738 | #endif | |
1739 | else | |
1740 | /* This vector is an INTEGER set, or something like it */ | |
1741 | { | |
1742 | *size_ret = XVECTOR (obj)->size; | |
1743 | if (NILP (type)) type = QINTEGER; | |
1744 | *format_ret = 16; | |
1745 | for (i = 0; i < *size_ret; i++) | |
1746 | if (CONSP (XVECTOR (obj)->contents [i])) | |
1747 | *format_ret = 32; | |
7da64e5c | 1748 | else if (!INTEGERP (XVECTOR (obj)->contents [i])) |
ede4db72 RS |
1749 | Fsignal (Qerror, /* Qselection_error */ |
1750 | Fcons (build_string | |
1751 | ("elements of selection vector must be integers or conses of integers"), | |
1752 | Fcons (obj, Qnil))); | |
1753 | ||
1754 | *data_ret = (unsigned char *) xmalloc (*size_ret * (*format_ret/8)); | |
1755 | for (i = 0; i < *size_ret; i++) | |
1756 | if (*format_ret == 32) | |
1757 | (*((unsigned long **) data_ret)) [i] | |
1758 | = cons_to_long (XVECTOR (obj)->contents [i]); | |
1759 | else | |
1760 | (*((unsigned short **) data_ret)) [i] | |
1761 | = (unsigned short) cons_to_long (XVECTOR (obj)->contents [i]); | |
1762 | } | |
1763 | } | |
1764 | else | |
1765 | Fsignal (Qerror, /* Qselection_error */ | |
1766 | Fcons (build_string ("unrecognised selection data"), | |
1767 | Fcons (obj, Qnil))); | |
1768 | ||
5c3a351a | 1769 | *type_ret = symbol_to_x_atom (dpyinfo, display, type); |
ede4db72 RS |
1770 | } |
1771 | ||
1772 | static Lisp_Object | |
1773 | clean_local_selection_data (obj) | |
1774 | Lisp_Object obj; | |
1775 | { | |
1776 | if (CONSP (obj) | |
7da64e5c | 1777 | && INTEGERP (XCONS (obj)->car) |
ede4db72 | 1778 | && CONSP (XCONS (obj)->cdr) |
7da64e5c | 1779 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car) |
ede4db72 RS |
1780 | && NILP (XCONS (XCONS (obj)->cdr)->cdr)) |
1781 | obj = Fcons (XCONS (obj)->car, XCONS (obj)->cdr); | |
1782 | ||
1783 | if (CONSP (obj) | |
7da64e5c RS |
1784 | && INTEGERP (XCONS (obj)->car) |
1785 | && INTEGERP (XCONS (obj)->cdr)) | |
ede4db72 RS |
1786 | { |
1787 | if (XINT (XCONS (obj)->car) == 0) | |
1788 | return XCONS (obj)->cdr; | |
1789 | if (XINT (XCONS (obj)->car) == -1) | |
1790 | return make_number (- XINT (XCONS (obj)->cdr)); | |
1791 | } | |
1792 | if (VECTORP (obj)) | |
1793 | { | |
1794 | int i; | |
1795 | int size = XVECTOR (obj)->size; | |
1796 | Lisp_Object copy; | |
1797 | if (size == 1) | |
1798 | return clean_local_selection_data (XVECTOR (obj)->contents [0]); | |
1799 | copy = Fmake_vector (size, Qnil); | |
1800 | for (i = 0; i < size; i++) | |
1801 | XVECTOR (copy)->contents [i] | |
1802 | = clean_local_selection_data (XVECTOR (obj)->contents [i]); | |
1803 | return copy; | |
1804 | } | |
1805 | return obj; | |
1806 | } | |
1807 | \f | |
1808 | /* Called from XTread_socket to handle SelectionNotify events. | |
606140dd KH |
1809 | If it's the selection we are waiting for, stop waiting |
1810 | by setting the car of reading_selection_reply to non-nil. | |
1811 | We store t there if the reply is successful, lambda if not. */ | |
ede4db72 RS |
1812 | |
1813 | void | |
1814 | x_handle_selection_notify (event) | |
1815 | XSelectionEvent *event; | |
1816 | { | |
5d0ba25b | 1817 | if (event->requestor != reading_selection_window) |
ede4db72 RS |
1818 | return; |
1819 | if (event->selection != reading_which_selection) | |
1820 | return; | |
1821 | ||
606140dd KH |
1822 | XCONS (reading_selection_reply)->car |
1823 | = (event->property != 0 ? Qt : Qlambda); | |
ede4db72 RS |
1824 | } |
1825 | ||
1826 | \f | |
a0d76c27 EN |
1827 | DEFUN ("x-own-selection-internal", Fx_own_selection_internal, |
1828 | Sx_own_selection_internal, 2, 2, 0, | |
ede4db72 RS |
1829 | "Assert an X selection of the given TYPE with the given VALUE.\n\ |
1830 | TYPE is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1831 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1832 | VALUE is typically a string, or a cons of two markers, but may be\n\ | |
a87ed99c | 1833 | anything that the functions on `selection-converter-alist' know about.") |
ede4db72 RS |
1834 | (selection_name, selection_value) |
1835 | Lisp_Object selection_name, selection_value; | |
1836 | { | |
703e0710 | 1837 | check_x (); |
ede4db72 | 1838 | CHECK_SYMBOL (selection_name, 0); |
606140dd | 1839 | if (NILP (selection_value)) error ("selection-value may not be nil"); |
ede4db72 RS |
1840 | x_own_selection (selection_name, selection_value); |
1841 | return selection_value; | |
1842 | } | |
1843 | ||
1844 | ||
1845 | /* Request the selection value from the owner. If we are the owner, | |
1846 | simply return our selection value. If we are not the owner, this | |
1847 | will block until all of the data has arrived. */ | |
1848 | ||
a0d76c27 EN |
1849 | DEFUN ("x-get-selection-internal", Fx_get_selection_internal, |
1850 | Sx_get_selection_internal, 2, 2, 0, | |
ede4db72 RS |
1851 | "Return text selected from some X window.\n\ |
1852 | SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1853 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
a87ed99c | 1854 | TYPE is the type of data desired, typically `STRING'.") |
ede4db72 RS |
1855 | (selection_symbol, target_type) |
1856 | Lisp_Object selection_symbol, target_type; | |
1857 | { | |
1858 | Lisp_Object val = Qnil; | |
1859 | struct gcpro gcpro1, gcpro2; | |
1860 | GCPRO2 (target_type, val); /* we store newly consed data into these */ | |
703e0710 | 1861 | check_x (); |
ede4db72 RS |
1862 | CHECK_SYMBOL (selection_symbol, 0); |
1863 | ||
1864 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1865 | if (CONSP (target_type) | |
1866 | && XCONS (target_type)->car == QMULTIPLE) | |
1867 | { | |
1868 | CHECK_VECTOR (XCONS (target_type)->cdr, 0); | |
1869 | /* So we don't destructively modify this... */ | |
1870 | target_type = copy_multiple_data (target_type); | |
1871 | } | |
1872 | else | |
1873 | #endif | |
1874 | CHECK_SYMBOL (target_type, 0); | |
1875 | ||
1876 | val = x_get_local_selection (selection_symbol, target_type); | |
1877 | ||
1878 | if (NILP (val)) | |
1879 | { | |
1880 | val = x_get_foreign_selection (selection_symbol, target_type); | |
1881 | goto DONE; | |
1882 | } | |
1883 | ||
1884 | if (CONSP (val) | |
1885 | && SYMBOLP (XCONS (val)->car)) | |
1886 | { | |
1887 | val = XCONS (val)->cdr; | |
1888 | if (CONSP (val) && NILP (XCONS (val)->cdr)) | |
1889 | val = XCONS (val)->car; | |
1890 | } | |
1891 | val = clean_local_selection_data (val); | |
1892 | DONE: | |
1893 | UNGCPRO; | |
1894 | return val; | |
1895 | } | |
1896 | ||
a0d76c27 EN |
1897 | DEFUN ("x-disown-selection-internal", Fx_disown_selection_internal, |
1898 | Sx_disown_selection_internal, 1, 2, 0, | |
a87ed99c RS |
1899 | "If we own the selection SELECTION, disown it.\n\ |
1900 | Disowning it means there is no such selection.") | |
ede4db72 RS |
1901 | (selection, time) |
1902 | Lisp_Object selection; | |
1903 | Lisp_Object time; | |
1904 | { | |
ede4db72 RS |
1905 | Time timestamp; |
1906 | Atom selection_atom; | |
1907 | XSelectionClearEvent event; | |
3834c318 | 1908 | Display *display; |
5c3a351a | 1909 | struct x_display_info *dpyinfo; |
ede4db72 | 1910 | |
703e0710 | 1911 | check_x (); |
3834c318 | 1912 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 1913 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
ede4db72 RS |
1914 | CHECK_SYMBOL (selection, 0); |
1915 | if (NILP (time)) | |
7da64e5c | 1916 | timestamp = last_event_timestamp; |
ede4db72 RS |
1917 | else |
1918 | timestamp = cons_to_long (time); | |
1919 | ||
1920 | if (NILP (assq_no_quit (selection, Vselection_alist))) | |
1921 | return Qnil; /* Don't disown the selection when we're not the owner. */ | |
1922 | ||
5c3a351a | 1923 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection); |
ede4db72 RS |
1924 | |
1925 | BLOCK_INPUT; | |
1926 | XSetSelectionOwner (display, selection_atom, None, timestamp); | |
1927 | UNBLOCK_INPUT; | |
1928 | ||
eb8c3be9 | 1929 | /* It doesn't seem to be guaranteed that a SelectionClear event will be |
ede4db72 RS |
1930 | generated for a window which owns the selection when that window sets |
1931 | the selection owner to None. The NCD server does, the MIT Sun4 server | |
1932 | doesn't. So we synthesize one; this means we might get two, but | |
1933 | that's ok, because the second one won't have any effect. */ | |
8d47f8c4 RS |
1934 | SELECTION_EVENT_DISPLAY (&event) = display; |
1935 | SELECTION_EVENT_SELECTION (&event) = selection_atom; | |
1936 | SELECTION_EVENT_TIME (&event) = timestamp; | |
ede4db72 RS |
1937 | x_handle_selection_clear (&event); |
1938 | ||
1939 | return Qt; | |
1940 | } | |
1941 | ||
a87ed99c RS |
1942 | /* Get rid of all the selections in buffer BUFFER. |
1943 | This is used when we kill a buffer. */ | |
1944 | ||
1945 | void | |
1946 | x_disown_buffer_selections (buffer) | |
1947 | Lisp_Object buffer; | |
1948 | { | |
1949 | Lisp_Object tail; | |
1950 | struct buffer *buf = XBUFFER (buffer); | |
1951 | ||
1952 | for (tail = Vselection_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1953 | { | |
1954 | Lisp_Object elt, value; | |
1955 | elt = XCONS (tail)->car; | |
1956 | value = XCONS (elt)->cdr; | |
1957 | if (CONSP (value) && MARKERP (XCONS (value)->car) | |
1958 | && XMARKER (XCONS (value)->car)->buffer == buf) | |
1959 | Fx_disown_selection_internal (XCONS (elt)->car, Qnil); | |
1960 | } | |
1961 | } | |
ede4db72 RS |
1962 | |
1963 | DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p, | |
1964 | 0, 1, 0, | |
a87ed99c | 1965 | "Whether the current Emacs process owns the given X Selection.\n\ |
ede4db72 RS |
1966 | The arg should be the name of the selection in question, typically one of\n\ |
1967 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1968 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1969 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
1970 | and t is the same as `SECONDARY'.)") | |
1971 | (selection) | |
1972 | Lisp_Object selection; | |
1973 | { | |
703e0710 | 1974 | check_x (); |
ede4db72 RS |
1975 | CHECK_SYMBOL (selection, 0); |
1976 | if (EQ (selection, Qnil)) selection = QPRIMARY; | |
1977 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
1978 | ||
1979 | if (NILP (Fassq (selection, Vselection_alist))) | |
1980 | return Qnil; | |
1981 | return Qt; | |
1982 | } | |
1983 | ||
1984 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
1985 | 0, 1, 0, | |
1986 | "Whether there is an owner for the given X Selection.\n\ | |
1987 | The arg should be the name of the selection in question, typically one of\n\ | |
1988 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
1989 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
1990 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
1991 | and t is the same as `SECONDARY'.)") | |
1992 | (selection) | |
1993 | Lisp_Object selection; | |
1994 | { | |
1995 | Window owner; | |
356ba514 | 1996 | Atom atom; |
3834c318 RS |
1997 | Display *dpy; |
1998 | ||
b8c70430 | 1999 | /* It should be safe to call this before we have an X frame. */ |
c6423dc1 | 2000 | if (! FRAME_X_P (selected_frame)) |
b8c70430 RS |
2001 | return Qnil; |
2002 | ||
3834c318 | 2003 | dpy = FRAME_X_DISPLAY (selected_frame); |
ede4db72 RS |
2004 | CHECK_SYMBOL (selection, 0); |
2005 | if (!NILP (Fx_selection_owner_p (selection))) | |
2006 | return Qt; | |
356ba514 RS |
2007 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
2008 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
5c3a351a RS |
2009 | atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
2010 | dpy, selection); | |
356ba514 RS |
2011 | if (atom == 0) |
2012 | return Qnil; | |
ede4db72 | 2013 | BLOCK_INPUT; |
356ba514 | 2014 | owner = XGetSelectionOwner (dpy, atom); |
ede4db72 RS |
2015 | UNBLOCK_INPUT; |
2016 | return (owner ? Qt : Qnil); | |
2017 | } | |
2018 | ||
2019 | \f | |
2020 | #ifdef CUT_BUFFER_SUPPORT | |
2021 | ||
ede4db72 RS |
2022 | /* Ensure that all 8 cut buffers exist. ICCCM says we gotta... */ |
2023 | static void | |
2024 | initialize_cut_buffers (display, window) | |
2025 | Display *display; | |
2026 | Window window; | |
2027 | { | |
2028 | unsigned char *data = (unsigned char *) ""; | |
2029 | BLOCK_INPUT; | |
2030 | #define FROB(atom) XChangeProperty (display, window, atom, XA_STRING, 8, \ | |
2031 | PropModeAppend, data, 0) | |
2032 | FROB (XA_CUT_BUFFER0); | |
2033 | FROB (XA_CUT_BUFFER1); | |
2034 | FROB (XA_CUT_BUFFER2); | |
2035 | FROB (XA_CUT_BUFFER3); | |
2036 | FROB (XA_CUT_BUFFER4); | |
2037 | FROB (XA_CUT_BUFFER5); | |
2038 | FROB (XA_CUT_BUFFER6); | |
2039 | FROB (XA_CUT_BUFFER7); | |
2040 | #undef FROB | |
2041 | UNBLOCK_INPUT; | |
ede4db72 RS |
2042 | } |
2043 | ||
2044 | ||
a87ed99c | 2045 | #define CHECK_CUT_BUFFER(symbol,n) \ |
ede4db72 RS |
2046 | { CHECK_SYMBOL ((symbol), (n)); \ |
2047 | if (!EQ((symbol), QCUT_BUFFER0) && !EQ((symbol), QCUT_BUFFER1) \ | |
2048 | && !EQ((symbol), QCUT_BUFFER2) && !EQ((symbol), QCUT_BUFFER3) \ | |
2049 | && !EQ((symbol), QCUT_BUFFER4) && !EQ((symbol), QCUT_BUFFER5) \ | |
2050 | && !EQ((symbol), QCUT_BUFFER6) && !EQ((symbol), QCUT_BUFFER7)) \ | |
2051 | Fsignal (Qerror, \ | |
a87ed99c | 2052 | Fcons (build_string ("doesn't name a cut buffer"), \ |
ede4db72 RS |
2053 | Fcons ((symbol), Qnil))); \ |
2054 | } | |
2055 | ||
a87ed99c RS |
2056 | DEFUN ("x-get-cut-buffer-internal", Fx_get_cut_buffer_internal, |
2057 | Sx_get_cut_buffer_internal, 1, 1, 0, | |
2058 | "Returns the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
2059 | (buffer) |
2060 | Lisp_Object buffer; | |
2061 | { | |
3834c318 | 2062 | Window window; |
ede4db72 RS |
2063 | Atom buffer_atom; |
2064 | unsigned char *data; | |
2065 | int bytes; | |
2066 | Atom type; | |
2067 | int format; | |
2068 | unsigned long size; | |
2069 | Lisp_Object ret; | |
3834c318 | 2070 | Display *display; |
5c3a351a | 2071 | struct x_display_info *dpyinfo; |
ede4db72 | 2072 | |
703e0710 | 2073 | check_x (); |
3834c318 | 2074 | display = FRAME_X_DISPLAY (selected_frame); |
5c3a351a | 2075 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
3834c318 | 2076 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ |
a87ed99c | 2077 | CHECK_CUT_BUFFER (buffer, 0); |
5c3a351a | 2078 | buffer_atom = symbol_to_x_atom (dpyinfo, display, buffer); |
ede4db72 RS |
2079 | |
2080 | x_get_window_property (display, window, buffer_atom, &data, &bytes, | |
2081 | &type, &format, &size, 0); | |
2082 | if (!data) return Qnil; | |
2083 | ||
2084 | if (format != 8 || type != XA_STRING) | |
2085 | Fsignal (Qerror, | |
2086 | Fcons (build_string ("cut buffer doesn't contain 8-bit data"), | |
5c3a351a | 2087 | Fcons (x_atom_to_symbol (dpyinfo, display, type), |
ede4db72 RS |
2088 | Fcons (make_number (format), Qnil)))); |
2089 | ||
2090 | ret = (bytes ? make_string ((char *) data, bytes) : Qnil); | |
002bbc0e | 2091 | /* Use free, not XFree, because x_get_window_property |
0158abbc | 2092 | calls xmalloc itself. */ |
002bbc0e | 2093 | free (data); |
ede4db72 RS |
2094 | return ret; |
2095 | } | |
2096 | ||
2097 | ||
a87ed99c RS |
2098 | DEFUN ("x-store-cut-buffer-internal", Fx_store_cut_buffer_internal, |
2099 | Sx_store_cut_buffer_internal, 2, 2, 0, | |
2100 | "Sets the value of the named cut buffer (typically CUT_BUFFER0).") | |
ede4db72 RS |
2101 | (buffer, string) |
2102 | Lisp_Object buffer, string; | |
2103 | { | |
3834c318 | 2104 | Window window; |
ede4db72 RS |
2105 | Atom buffer_atom; |
2106 | unsigned char *data; | |
2107 | int bytes; | |
2108 | int bytes_remaining; | |
3834c318 RS |
2109 | int max_bytes; |
2110 | Display *display; | |
ede4db72 | 2111 | |
703e0710 | 2112 | check_x (); |
3834c318 RS |
2113 | display = FRAME_X_DISPLAY (selected_frame); |
2114 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
2115 | ||
2116 | max_bytes = SELECTION_QUANTUM (display); | |
2117 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
2118 | max_bytes = MAX_SELECTION_QUANTUM; | |
2119 | ||
a87ed99c | 2120 | CHECK_CUT_BUFFER (buffer, 0); |
ede4db72 | 2121 | CHECK_STRING (string, 0); |
5c3a351a RS |
2122 | buffer_atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
2123 | display, buffer); | |
ede4db72 RS |
2124 | data = (unsigned char *) XSTRING (string)->data; |
2125 | bytes = XSTRING (string)->size; | |
2126 | bytes_remaining = bytes; | |
2127 | ||
04649dbc KH |
2128 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
2129 | { | |
2130 | initialize_cut_buffers (display, window); | |
2131 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; | |
2132 | } | |
ede4db72 RS |
2133 | |
2134 | BLOCK_INPUT; | |
10608c8c RS |
2135 | |
2136 | /* Don't mess up with an empty value. */ | |
2137 | if (!bytes_remaining) | |
2138 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2139 | PropModeReplace, data, 0); | |
2140 | ||
ede4db72 RS |
2141 | while (bytes_remaining) |
2142 | { | |
2143 | int chunk = (bytes_remaining < max_bytes | |
2144 | ? bytes_remaining : max_bytes); | |
2145 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, | |
2146 | (bytes_remaining == bytes | |
2147 | ? PropModeReplace | |
2148 | : PropModeAppend), | |
2149 | data, chunk); | |
2150 | data += chunk; | |
2151 | bytes_remaining -= chunk; | |
2152 | } | |
2153 | UNBLOCK_INPUT; | |
2154 | return string; | |
2155 | } | |
2156 | ||
2157 | ||
a87ed99c RS |
2158 | DEFUN ("x-rotate-cut-buffers-internal", Fx_rotate_cut_buffers_internal, |
2159 | Sx_rotate_cut_buffers_internal, 1, 1, 0, | |
2160 | "Rotate the values of the cut buffers by the given number of steps;\n\ | |
ede4db72 RS |
2161 | positive means move values forward, negative means backward.") |
2162 | (n) | |
2163 | Lisp_Object n; | |
2164 | { | |
3834c318 RS |
2165 | Window window; |
2166 | Atom props[8]; | |
2167 | Display *display; | |
ede4db72 | 2168 | |
703e0710 | 2169 | check_x (); |
3834c318 RS |
2170 | display = FRAME_X_DISPLAY (selected_frame); |
2171 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ | |
7da64e5c | 2172 | CHECK_NUMBER (n, 0); |
3834c318 RS |
2173 | if (XINT (n) == 0) |
2174 | return n; | |
04649dbc KH |
2175 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
2176 | { | |
2177 | initialize_cut_buffers (display, window); | |
2178 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; | |
2179 | } | |
3834c318 | 2180 | |
ede4db72 RS |
2181 | props[0] = XA_CUT_BUFFER0; |
2182 | props[1] = XA_CUT_BUFFER1; | |
2183 | props[2] = XA_CUT_BUFFER2; | |
2184 | props[3] = XA_CUT_BUFFER3; | |
2185 | props[4] = XA_CUT_BUFFER4; | |
2186 | props[5] = XA_CUT_BUFFER5; | |
2187 | props[6] = XA_CUT_BUFFER6; | |
2188 | props[7] = XA_CUT_BUFFER7; | |
2189 | BLOCK_INPUT; | |
2190 | XRotateWindowProperties (display, window, props, 8, XINT (n)); | |
2191 | UNBLOCK_INPUT; | |
2192 | return n; | |
2193 | } | |
2194 | ||
2195 | #endif | |
2196 | \f | |
ede4db72 RS |
2197 | void |
2198 | syms_of_xselect () | |
2199 | { | |
ede4db72 RS |
2200 | defsubr (&Sx_get_selection_internal); |
2201 | defsubr (&Sx_own_selection_internal); | |
2202 | defsubr (&Sx_disown_selection_internal); | |
2203 | defsubr (&Sx_selection_owner_p); | |
2204 | defsubr (&Sx_selection_exists_p); | |
2205 | ||
2206 | #ifdef CUT_BUFFER_SUPPORT | |
a87ed99c RS |
2207 | defsubr (&Sx_get_cut_buffer_internal); |
2208 | defsubr (&Sx_store_cut_buffer_internal); | |
2209 | defsubr (&Sx_rotate_cut_buffers_internal); | |
ede4db72 RS |
2210 | #endif |
2211 | ||
2212 | reading_selection_reply = Fcons (Qnil, Qnil); | |
2213 | staticpro (&reading_selection_reply); | |
2214 | reading_selection_window = 0; | |
2215 | reading_which_selection = 0; | |
2216 | ||
2217 | property_change_wait_list = 0; | |
2f65feb6 | 2218 | prop_location_identifier = 0; |
ede4db72 RS |
2219 | property_change_reply = Fcons (Qnil, Qnil); |
2220 | staticpro (&property_change_reply); | |
2221 | ||
2222 | Vselection_alist = Qnil; | |
2223 | staticpro (&Vselection_alist); | |
2224 | ||
2225 | DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist, | |
2226 | "An alist associating X Windows selection-types with functions.\n\ | |
2227 | These functions are called to convert the selection, with three args:\n\ | |
2228 | the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2229 | a desired type to which the selection should be converted;\n\ | |
2230 | and the local selection value (whatever was given to `x-own-selection').\n\ | |
2231 | \n\ | |
2232 | The function should return the value to send to the X server\n\ | |
2233 | \(typically a string). A return value of nil\n\ | |
2234 | means that the conversion could not be done.\n\ | |
2235 | A return value which is the symbol `NULL'\n\ | |
2236 | means that a side-effect was executed,\n\ | |
2237 | and there is no meaningful selection value."); | |
2238 | Vselection_converter_alist = Qnil; | |
2239 | ||
2240 | DEFVAR_LISP ("x-lost-selection-hooks", &Vx_lost_selection_hooks, | |
2241 | "A list of functions to be called when Emacs loses an X selection.\n\ | |
2242 | \(This happens when some other X client makes its own selection\n\ | |
2243 | or when a Lisp program explicitly clears the selection.)\n\ | |
2244 | The functions are called with one argument, the selection type\n\ | |
d31b6237 | 2245 | \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD')."); |
ede4db72 RS |
2246 | Vx_lost_selection_hooks = Qnil; |
2247 | ||
2248 | DEFVAR_LISP ("x-sent-selection-hooks", &Vx_sent_selection_hooks, | |
2249 | "A list of functions to be called when Emacs answers a selection request.\n\ | |
2250 | The functions are called with four arguments:\n\ | |
2251 | - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
2252 | - the selection-type which Emacs was asked to convert the\n\ | |
2253 | selection into before sending (for example, `STRING' or `LENGTH');\n\ | |
2254 | - a flag indicating success or failure for responding to the request.\n\ | |
2255 | We might have failed (and declined the request) for any number of reasons,\n\ | |
2256 | including being asked for a selection that we no longer own, or being asked\n\ | |
2257 | to convert into a type that we don't know about or that is inappropriate.\n\ | |
2258 | This hook doesn't let you change the behavior of Emacs's selection replies,\n\ | |
2259 | it merely informs you that they have happened."); | |
2260 | Vx_sent_selection_hooks = Qnil; | |
2261 | ||
2262 | DEFVAR_INT ("x-selection-timeout", &x_selection_timeout, | |
80da0190 | 2263 | "Number of milliseconds to wait for a selection reply.\n\ |
2a1a4c9d | 2264 | If the selection owner doesn't reply in this time, we give up.\n\ |
ede4db72 | 2265 | A value of 0 means wait as long as necessary. This is initialized from the\n\ |
80da0190 | 2266 | \"*selectionTimeout\" resource."); |
ede4db72 RS |
2267 | x_selection_timeout = 0; |
2268 | ||
2269 | QPRIMARY = intern ("PRIMARY"); staticpro (&QPRIMARY); | |
2270 | QSECONDARY = intern ("SECONDARY"); staticpro (&QSECONDARY); | |
2271 | QSTRING = intern ("STRING"); staticpro (&QSTRING); | |
2272 | QINTEGER = intern ("INTEGER"); staticpro (&QINTEGER); | |
2273 | QCLIPBOARD = intern ("CLIPBOARD"); staticpro (&QCLIPBOARD); | |
2274 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2275 | QTEXT = intern ("TEXT"); staticpro (&QTEXT); | |
e6c7c988 | 2276 | QCOMPOUND_TEXT = intern ("COMPOUND_TEXT"); staticpro (&QCOMPOUND_TEXT); |
ede4db72 RS |
2277 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); |
2278 | QDELETE = intern ("DELETE"); staticpro (&QDELETE); | |
2279 | QMULTIPLE = intern ("MULTIPLE"); staticpro (&QMULTIPLE); | |
2280 | QINCR = intern ("INCR"); staticpro (&QINCR); | |
2281 | QEMACS_TMP = intern ("_EMACS_TMP_"); staticpro (&QEMACS_TMP); | |
2282 | QTARGETS = intern ("TARGETS"); staticpro (&QTARGETS); | |
2283 | QATOM = intern ("ATOM"); staticpro (&QATOM); | |
2284 | QATOM_PAIR = intern ("ATOM_PAIR"); staticpro (&QATOM_PAIR); | |
2285 | QNULL = intern ("NULL"); staticpro (&QNULL); | |
2286 | ||
2287 | #ifdef CUT_BUFFER_SUPPORT | |
2288 | QCUT_BUFFER0 = intern ("CUT_BUFFER0"); staticpro (&QCUT_BUFFER0); | |
2289 | QCUT_BUFFER1 = intern ("CUT_BUFFER1"); staticpro (&QCUT_BUFFER1); | |
2290 | QCUT_BUFFER2 = intern ("CUT_BUFFER2"); staticpro (&QCUT_BUFFER2); | |
2291 | QCUT_BUFFER3 = intern ("CUT_BUFFER3"); staticpro (&QCUT_BUFFER3); | |
2292 | QCUT_BUFFER4 = intern ("CUT_BUFFER4"); staticpro (&QCUT_BUFFER4); | |
2293 | QCUT_BUFFER5 = intern ("CUT_BUFFER5"); staticpro (&QCUT_BUFFER5); | |
2294 | QCUT_BUFFER6 = intern ("CUT_BUFFER6"); staticpro (&QCUT_BUFFER6); | |
2295 | QCUT_BUFFER7 = intern ("CUT_BUFFER7"); staticpro (&QCUT_BUFFER7); | |
2296 | #endif | |
2297 | ||
2298 | } |