Commit | Line | Data |
---|---|---|
2408b3a1 | 1 | /* X Selection processing for Emacs. |
acaf905b | 2 | Copyright (C) 1993-1997, 2000-2012 Free Software Foundation, Inc. |
ede4db72 RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
ede4db72 | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
ede4db72 RS |
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 | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
ede4db72 | 18 | |
c6c5df7f | 19 | |
ede4db72 RS |
20 | /* Rewritten by jwz */ |
21 | ||
18160b98 | 22 | #include <config.h> |
be44ca6c | 23 | #include <limits.h> |
5b698285 | 24 | #include <stdio.h> /* termhooks.h needs this */ |
d7306fe6 | 25 | #include <setjmp.h> |
678b3958 KS |
26 | |
27 | #ifdef HAVE_SYS_TYPES_H | |
28 | #include <sys/types.h> | |
29 | #endif | |
4004364e | 30 | |
678b3958 | 31 | #include <unistd.h> |
678b3958 | 32 | |
ede4db72 RS |
33 | #include "lisp.h" |
34 | #include "xterm.h" /* for all of the X includes */ | |
7da64e5c RS |
35 | #include "dispextern.h" /* frame.h seems to want this */ |
36 | #include "frame.h" /* Need this to get the X window of selected_frame */ | |
9ac0d9e0 | 37 | #include "blockinput.h" |
e5560ff7 | 38 | #include "character.h" |
5faa9b45 | 39 | #include "buffer.h" |
dfcf069d | 40 | #include "process.h" |
1fb3821b | 41 | #include "termhooks.h" |
dd0fe424 | 42 | #include "keyboard.h" |
1fb3821b JD |
43 | |
44 | #include <X11/Xproto.h> | |
7da64e5c | 45 | |
d9c0d4a3 | 46 | struct prop_location; |
e067f0c1 | 47 | struct selection_data; |
d9c0d4a3 | 48 | |
f57e2426 | 49 | static Lisp_Object x_atom_to_symbol (Display *dpy, Atom atom); |
a9f737ee CY |
50 | static Atom symbol_to_x_atom (struct x_display_info *, Lisp_Object); |
51 | static void x_own_selection (Lisp_Object, Lisp_Object, Lisp_Object); | |
52 | static Lisp_Object x_get_local_selection (Lisp_Object, Lisp_Object, int, | |
53 | struct x_display_info *); | |
f57e2426 J |
54 | static void x_decline_selection_request (struct input_event *); |
55 | static Lisp_Object x_selection_request_lisp_error (Lisp_Object); | |
56 | static Lisp_Object queue_selection_requests_unwind (Lisp_Object); | |
f57e2426 | 57 | static Lisp_Object x_catch_errors_unwind (Lisp_Object); |
e067f0c1 CY |
58 | static void x_reply_selection_request (struct input_event *, struct x_display_info *); |
59 | static int x_convert_selection (struct input_event *, Lisp_Object, Lisp_Object, | |
a9f737ee | 60 | Atom, int, struct x_display_info *); |
f57e2426 J |
61 | static int waiting_for_other_props_on_window (Display *, Window); |
62 | static struct prop_location *expect_property_change (Display *, Window, | |
63 | Atom, int); | |
64 | static void unexpect_property_change (struct prop_location *); | |
65 | static Lisp_Object wait_for_property_change_unwind (Lisp_Object); | |
66 | static void wait_for_property_change (struct prop_location *); | |
a9f737ee CY |
67 | static Lisp_Object x_get_foreign_selection (Lisp_Object, Lisp_Object, |
68 | Lisp_Object, Lisp_Object); | |
f57e2426 J |
69 | static Lisp_Object x_get_window_property_as_lisp_data (Display *, |
70 | Window, Atom, | |
71 | Lisp_Object, Atom); | |
eec47d6b DN |
72 | static Lisp_Object selection_data_to_lisp_data (Display *, |
73 | const unsigned char *, | |
864d7ce7 | 74 | ptrdiff_t, Atom, int); |
f57e2426 J |
75 | static void lisp_data_to_selection_data (Display *, Lisp_Object, |
76 | unsigned char **, Atom *, | |
864d7ce7 | 77 | ptrdiff_t *, int *, int *); |
f57e2426 | 78 | static Lisp_Object clean_local_selection_data (Lisp_Object); |
d9c0d4a3 GM |
79 | |
80 | /* Printing traces to stderr. */ | |
81 | ||
82 | #ifdef TRACE_SELECTION | |
83 | #define TRACE0(fmt) \ | |
d311d28c | 84 | fprintf (stderr, "%"pMd": " fmt "\n", (printmax_t) getpid ()) |
d9c0d4a3 | 85 | #define TRACE1(fmt, a0) \ |
d311d28c | 86 | fprintf (stderr, "%"pMd": " fmt "\n", (printmax_t) getpid (), a0) |
d9c0d4a3 | 87 | #define TRACE2(fmt, a0, a1) \ |
d311d28c | 88 | fprintf (stderr, "%"pMd": " fmt "\n", (printmax_t) getpid (), a0, a1) |
9c3ad9e1 | 89 | #define TRACE3(fmt, a0, a1, a2) \ |
d311d28c | 90 | fprintf (stderr, "%"pMd": " fmt "\n", (printmax_t) getpid (), a0, a1, a2) |
d9c0d4a3 GM |
91 | #else |
92 | #define TRACE0(fmt) (void) 0 | |
93 | #define TRACE1(fmt, a0) (void) 0 | |
94 | #define TRACE2(fmt, a0, a1) (void) 0 | |
95 | #endif | |
96 | ||
97 | ||
955cbe7b | 98 | static Lisp_Object QSECONDARY, QSTRING, QINTEGER, QCLIPBOARD, QTIMESTAMP, |
ede4db72 | 99 | QTEXT, QDELETE, QMULTIPLE, QINCR, QEMACS_TMP, QTARGETS, QATOM, QNULL, |
a9f737ee | 100 | QATOM_PAIR, QCLIPBOARD_MANAGER, QSAVE_TARGETS; |
ede4db72 | 101 | |
955cbe7b PE |
102 | static Lisp_Object QCOMPOUND_TEXT; /* This is a type of selection. */ |
103 | static Lisp_Object QUTF8_STRING; /* This is a type of selection. */ | |
e6c7c988 | 104 | |
955cbe7b | 105 | static Lisp_Object Qcompound_text_with_extensions; |
fbbe0ace | 106 | |
e57ad4d8 | 107 | static Lisp_Object Qforeign_selection; |
cd18e7e3 | 108 | static Lisp_Object Qx_lost_selection_functions, Qx_sent_selection_functions; |
e57ad4d8 | 109 | |
864d7ce7 PE |
110 | /* Bytes needed to represent 'long' data. This is as per libX11; it |
111 | is not necessarily sizeof (long). */ | |
112 | #define X_LONG_SIZE 4 | |
113 | ||
252c5ee1 PE |
114 | /* Extreme 'short' and 'long' values suitable for libX11. */ |
115 | #define X_SHRT_MAX 0x7fff | |
116 | #define X_SHRT_MIN (-1 - X_SHRT_MAX) | |
117 | #define X_LONG_MAX 0x7fffffff | |
118 | #define X_LONG_MIN (-1 - X_LONG_MAX) | |
2e621251 | 119 | #define X_ULONG_MAX 0xffffffffUL |
864d7ce7 | 120 | |
ede4db72 RS |
121 | /* If this is a smaller number than the max-request-size of the display, |
122 | emacs will use INCR selection transfer when the selection is larger | |
123 | than this. The max-request-size is usually around 64k, so if you want | |
1b65481e | 124 | emacs to use incremental selection transfers when the selection is |
ede4db72 | 125 | smaller than that, set this. I added this mostly for debugging the |
864d7ce7 PE |
126 | incremental transfer stuff, but it might improve server performance. |
127 | ||
128 | This value cannot exceed INT_MAX / max (X_LONG_SIZE, sizeof (long)) | |
129 | because it is multiplied by X_LONG_SIZE and by sizeof (long) in | |
130 | subscript calculations. Similarly for PTRDIFF_MAX - 1 or SIZE_MAX | |
131 | - 1 in place of INT_MAX. */ | |
132 | #define MAX_SELECTION_QUANTUM \ | |
133 | ((int) min (0xFFFFFF, (min (INT_MAX, min (PTRDIFF_MAX, SIZE_MAX) - 1) \ | |
134 | / max (X_LONG_SIZE, sizeof (long))))) | |
ede4db72 | 135 | |
864d7ce7 PE |
136 | static int |
137 | selection_quantum (Display *display) | |
138 | { | |
139 | long mrs = XMaxRequestSize (display); | |
140 | return (mrs < MAX_SELECTION_QUANTUM / X_LONG_SIZE + 25 | |
141 | ? (mrs - 25) * X_LONG_SIZE | |
142 | : MAX_SELECTION_QUANTUM); | |
143 | } | |
ede4db72 | 144 | |
a9f737ee CY |
145 | #define LOCAL_SELECTION(selection_symbol,dpyinfo) \ |
146 | assq_no_quit (selection_symbol, dpyinfo->terminal->Vselection_alist) | |
dd0fe424 KS |
147 | |
148 | \f | |
678b3958 KS |
149 | /* Define a queue to save up SELECTION_REQUEST_EVENT events for later |
150 | handling. */ | |
dd0fe424 KS |
151 | |
152 | struct selection_event_queue | |
153 | { | |
154 | struct input_event event; | |
155 | struct selection_event_queue *next; | |
156 | }; | |
157 | ||
158 | static struct selection_event_queue *selection_queue; | |
159 | ||
678b3958 | 160 | /* Nonzero means queue up SELECTION_REQUEST_EVENT events. */ |
dd0fe424 KS |
161 | |
162 | static int x_queue_selection_requests; | |
163 | ||
678b3958 | 164 | /* Queue up an SELECTION_REQUEST_EVENT *EVENT, to be processed later. */ |
dd0fe424 KS |
165 | |
166 | static void | |
971de7fb | 167 | x_queue_event (struct input_event *event) |
dd0fe424 KS |
168 | { |
169 | struct selection_event_queue *queue_tmp; | |
170 | ||
678b3958 KS |
171 | /* Don't queue repeated requests. |
172 | This only happens for large requests which uses the incremental protocol. */ | |
dd0fe424 KS |
173 | for (queue_tmp = selection_queue; queue_tmp; queue_tmp = queue_tmp->next) |
174 | { | |
72af86bd | 175 | if (!memcmp (&queue_tmp->event, event, sizeof (*event))) |
dd0fe424 | 176 | { |
6f04d126 | 177 | TRACE1 ("DECLINE DUP SELECTION EVENT %p", queue_tmp); |
678b3958 | 178 | x_decline_selection_request (event); |
dd0fe424 KS |
179 | return; |
180 | } | |
181 | } | |
182 | ||
38182d90 | 183 | queue_tmp = xmalloc (sizeof *queue_tmp); |
23f86fce DA |
184 | TRACE1 ("QUEUE SELECTION EVENT %p", queue_tmp); |
185 | queue_tmp->event = *event; | |
186 | queue_tmp->next = selection_queue; | |
187 | selection_queue = queue_tmp; | |
dd0fe424 KS |
188 | } |
189 | ||
678b3958 | 190 | /* Start queuing SELECTION_REQUEST_EVENT events. */ |
dd0fe424 KS |
191 | |
192 | static void | |
971de7fb | 193 | x_start_queuing_selection_requests (void) |
dd0fe424 KS |
194 | { |
195 | if (x_queue_selection_requests) | |
196 | abort (); | |
197 | ||
198 | x_queue_selection_requests++; | |
199 | TRACE1 ("x_start_queuing_selection_requests %d", x_queue_selection_requests); | |
200 | } | |
201 | ||
678b3958 | 202 | /* Stop queuing SELECTION_REQUEST_EVENT events. */ |
dd0fe424 KS |
203 | |
204 | static void | |
971de7fb | 205 | x_stop_queuing_selection_requests (void) |
dd0fe424 KS |
206 | { |
207 | TRACE1 ("x_stop_queuing_selection_requests %d", x_queue_selection_requests); | |
208 | --x_queue_selection_requests; | |
209 | ||
210 | /* Take all the queued events and put them back | |
211 | so that they get processed afresh. */ | |
212 | ||
213 | while (selection_queue != NULL) | |
214 | { | |
215 | struct selection_event_queue *queue_tmp = selection_queue; | |
6f04d126 | 216 | TRACE1 ("RESTORE SELECTION EVENT %p", queue_tmp); |
dd0fe424 KS |
217 | kbd_buffer_unget_event (&queue_tmp->event); |
218 | selection_queue = queue_tmp->next; | |
98c6f1e3 | 219 | xfree (queue_tmp); |
dd0fe424 KS |
220 | } |
221 | } | |
222 | \f | |
223 | ||
1b65481e | 224 | /* This converts a Lisp symbol to a server Atom, avoiding a server |
ede4db72 RS |
225 | roundtrip whenever possible. */ |
226 | ||
227 | static Atom | |
a9f737ee | 228 | symbol_to_x_atom (struct x_display_info *dpyinfo, Lisp_Object sym) |
ede4db72 RS |
229 | { |
230 | Atom val; | |
231 | if (NILP (sym)) return 0; | |
232 | if (EQ (sym, QPRIMARY)) return XA_PRIMARY; | |
233 | if (EQ (sym, QSECONDARY)) return XA_SECONDARY; | |
234 | if (EQ (sym, QSTRING)) return XA_STRING; | |
235 | if (EQ (sym, QINTEGER)) return XA_INTEGER; | |
236 | if (EQ (sym, QATOM)) return XA_ATOM; | |
5c3a351a RS |
237 | if (EQ (sym, QCLIPBOARD)) return dpyinfo->Xatom_CLIPBOARD; |
238 | if (EQ (sym, QTIMESTAMP)) return dpyinfo->Xatom_TIMESTAMP; | |
239 | if (EQ (sym, QTEXT)) return dpyinfo->Xatom_TEXT; | |
e6c7c988 | 240 | if (EQ (sym, QCOMPOUND_TEXT)) return dpyinfo->Xatom_COMPOUND_TEXT; |
5109c8dd | 241 | if (EQ (sym, QUTF8_STRING)) return dpyinfo->Xatom_UTF8_STRING; |
5c3a351a RS |
242 | if (EQ (sym, QDELETE)) return dpyinfo->Xatom_DELETE; |
243 | if (EQ (sym, QMULTIPLE)) return dpyinfo->Xatom_MULTIPLE; | |
244 | if (EQ (sym, QINCR)) return dpyinfo->Xatom_INCR; | |
245 | if (EQ (sym, QEMACS_TMP)) return dpyinfo->Xatom_EMACS_TMP; | |
246 | if (EQ (sym, QTARGETS)) return dpyinfo->Xatom_TARGETS; | |
247 | if (EQ (sym, QNULL)) return dpyinfo->Xatom_NULL; | |
ede4db72 RS |
248 | if (!SYMBOLP (sym)) abort (); |
249 | ||
51b59d79 | 250 | TRACE1 (" XInternAtom %s", SSDATA (SYMBOL_NAME (sym))); |
ede4db72 | 251 | BLOCK_INPUT; |
a9f737ee | 252 | val = XInternAtom (dpyinfo->display, SSDATA (SYMBOL_NAME (sym)), False); |
ede4db72 RS |
253 | UNBLOCK_INPUT; |
254 | return val; | |
255 | } | |
256 | ||
257 | ||
258 | /* This converts a server Atom to a Lisp symbol, avoiding server roundtrips | |
259 | and calls to intern whenever possible. */ | |
260 | ||
261 | static Lisp_Object | |
971de7fb | 262 | x_atom_to_symbol (Display *dpy, Atom atom) |
ede4db72 | 263 | { |
d9c0d4a3 | 264 | struct x_display_info *dpyinfo; |
ede4db72 RS |
265 | char *str; |
266 | Lisp_Object val; | |
1b65481e | 267 | |
d9c0d4a3 GM |
268 | if (! atom) |
269 | return Qnil; | |
1b65481e | 270 | |
7da64e5c RS |
271 | switch (atom) |
272 | { | |
273 | case XA_PRIMARY: | |
274 | return QPRIMARY; | |
275 | case XA_SECONDARY: | |
276 | return QSECONDARY; | |
277 | case XA_STRING: | |
278 | return QSTRING; | |
279 | case XA_INTEGER: | |
280 | return QINTEGER; | |
281 | case XA_ATOM: | |
282 | return QATOM; | |
7da64e5c RS |
283 | } |
284 | ||
d9c0d4a3 | 285 | dpyinfo = x_display_info_for_display (dpy); |
a9f737ee CY |
286 | if (dpyinfo == NULL) |
287 | return Qnil; | |
5c3a351a | 288 | if (atom == dpyinfo->Xatom_CLIPBOARD) |
7da64e5c | 289 | return QCLIPBOARD; |
5c3a351a | 290 | if (atom == dpyinfo->Xatom_TIMESTAMP) |
7da64e5c | 291 | return QTIMESTAMP; |
5c3a351a | 292 | if (atom == dpyinfo->Xatom_TEXT) |
7da64e5c | 293 | return QTEXT; |
e6c7c988 KH |
294 | if (atom == dpyinfo->Xatom_COMPOUND_TEXT) |
295 | return QCOMPOUND_TEXT; | |
5109c8dd KH |
296 | if (atom == dpyinfo->Xatom_UTF8_STRING) |
297 | return QUTF8_STRING; | |
5c3a351a | 298 | if (atom == dpyinfo->Xatom_DELETE) |
7da64e5c | 299 | return QDELETE; |
5c3a351a | 300 | if (atom == dpyinfo->Xatom_MULTIPLE) |
7da64e5c | 301 | return QMULTIPLE; |
5c3a351a | 302 | if (atom == dpyinfo->Xatom_INCR) |
7da64e5c | 303 | return QINCR; |
5c3a351a | 304 | if (atom == dpyinfo->Xatom_EMACS_TMP) |
7da64e5c | 305 | return QEMACS_TMP; |
5c3a351a | 306 | if (atom == dpyinfo->Xatom_TARGETS) |
7da64e5c | 307 | return QTARGETS; |
5c3a351a | 308 | if (atom == dpyinfo->Xatom_NULL) |
7da64e5c | 309 | return QNULL; |
ede4db72 RS |
310 | |
311 | BLOCK_INPUT; | |
d9c0d4a3 | 312 | str = XGetAtomName (dpy, atom); |
ede4db72 | 313 | UNBLOCK_INPUT; |
d9c0d4a3 | 314 | TRACE1 ("XGetAtomName --> %s", str); |
ede4db72 RS |
315 | if (! str) return Qnil; |
316 | val = intern (str); | |
317 | BLOCK_INPUT; | |
0158abbc | 318 | /* This was allocated by Xlib, so use XFree. */ |
ede4db72 RS |
319 | XFree (str); |
320 | UNBLOCK_INPUT; | |
321 | return val; | |
322 | } | |
8a89415e | 323 | \f |
ede4db72 | 324 | /* Do protocol to assert ourself as a selection owner. |
a9f737ee | 325 | FRAME shall be the owner; it must be a valid X frame. |
1b65481e | 326 | Update the Vselection_alist so that we can reply to later requests for |
ede4db72 RS |
327 | our selection. */ |
328 | ||
329 | static void | |
a9f737ee CY |
330 | x_own_selection (Lisp_Object selection_name, Lisp_Object selection_value, |
331 | Lisp_Object frame) | |
ede4db72 | 332 | { |
a9f737ee CY |
333 | struct frame *f = XFRAME (frame); |
334 | Window selecting_window = FRAME_X_WINDOW (f); | |
335 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
336 | Display *display = dpyinfo->display; | |
aa0daa9f | 337 | Time timestamp = last_event_timestamp; |
a9f737ee | 338 | Atom selection_atom = symbol_to_x_atom (dpyinfo, selection_name); |
ede4db72 RS |
339 | |
340 | BLOCK_INPUT; | |
9ba8e10d | 341 | x_catch_errors (display); |
aa0daa9f | 342 | XSetSelectionOwner (display, selection_atom, selecting_window, timestamp); |
a7b24d46 | 343 | x_check_errors (display, "Can't set selection: %s"); |
4545fa20 | 344 | x_uncatch_errors (); |
ede4db72 RS |
345 | UNBLOCK_INPUT; |
346 | ||
347 | /* Now update the local cache */ | |
348 | { | |
ede4db72 RS |
349 | Lisp_Object selection_data; |
350 | Lisp_Object prev_value; | |
351 | ||
16041401 | 352 | selection_data = list4 (selection_name, selection_value, |
be44ca6c | 353 | INTEGER_TO_CONS (timestamp), frame); |
a9f737ee | 354 | prev_value = LOCAL_SELECTION (selection_name, dpyinfo); |
ede4db72 | 355 | |
3f22b86f PE |
356 | tset_selection_alist |
357 | (dpyinfo->terminal, | |
358 | Fcons (selection_data, dpyinfo->terminal->Vselection_alist)); | |
ede4db72 | 359 | |
a9f737ee CY |
360 | /* If we already owned the selection, remove the old selection |
361 | data. Don't use Fdelq as that may QUIT. */ | |
ede4db72 RS |
362 | if (!NILP (prev_value)) |
363 | { | |
a9f737ee CY |
364 | /* We know it's not the CAR, so it's easy. */ |
365 | Lisp_Object rest = dpyinfo->terminal->Vselection_alist; | |
366 | for (; CONSP (rest); rest = XCDR (rest)) | |
8e713be6 | 367 | if (EQ (prev_value, Fcar (XCDR (rest)))) |
ede4db72 | 368 | { |
a9f737ee | 369 | XSETCDR (rest, XCDR (XCDR (rest))); |
ede4db72 RS |
370 | break; |
371 | } | |
372 | } | |
373 | } | |
374 | } | |
375 | \f | |
376 | /* Given a selection-name and desired type, look up our local copy of | |
377 | the selection value and convert it to the type. | |
2e621251 PE |
378 | Return nil, a string, a vector, a symbol, an integer, or a cons |
379 | that CONS_TO_INTEGER could plausibly handle. | |
5109c8dd KH |
380 | This function is used both for remote requests (LOCAL_REQUEST is zero) |
381 | and for local x-get-selection-internal (LOCAL_REQUEST is nonzero). | |
ede4db72 RS |
382 | |
383 | This calls random Lisp code, and may signal or gc. */ | |
384 | ||
385 | static Lisp_Object | |
a9f737ee CY |
386 | x_get_local_selection (Lisp_Object selection_symbol, Lisp_Object target_type, |
387 | int local_request, struct x_display_info *dpyinfo) | |
ede4db72 RS |
388 | { |
389 | Lisp_Object local_value; | |
6abdaa4a | 390 | Lisp_Object handler_fn, value, check; |
ede4db72 | 391 | |
a9f737ee | 392 | local_value = LOCAL_SELECTION (selection_symbol, dpyinfo); |
ede4db72 RS |
393 | |
394 | if (NILP (local_value)) return Qnil; | |
395 | ||
a9f737ee | 396 | /* TIMESTAMP is a special case. */ |
ede4db72 RS |
397 | if (EQ (target_type, QTIMESTAMP)) |
398 | { | |
399 | handler_fn = Qnil; | |
8e713be6 | 400 | value = XCAR (XCDR (XCDR (local_value))); |
ede4db72 | 401 | } |
ede4db72 RS |
402 | else |
403 | { | |
404 | /* Don't allow a quit within the converter. | |
405 | When the user types C-g, he would be surprised | |
406 | if by luck it came during a converter. */ | |
d311d28c | 407 | ptrdiff_t count = SPECPDL_INDEX (); |
ede4db72 RS |
408 | specbind (Qinhibit_quit, Qt); |
409 | ||
b7826503 | 410 | CHECK_SYMBOL (target_type); |
ede4db72 | 411 | handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist)); |
4f06187f RS |
412 | /* gcpro is not needed here since nothing but HANDLER_FN |
413 | is live, and that ought to be a symbol. */ | |
414 | ||
1eb4d468 RS |
415 | if (!NILP (handler_fn)) |
416 | value = call3 (handler_fn, | |
5109c8dd | 417 | selection_symbol, (local_request ? Qnil : target_type), |
8e713be6 | 418 | XCAR (XCDR (local_value))); |
1eb4d468 RS |
419 | else |
420 | value = Qnil; | |
ede4db72 RS |
421 | unbind_to (count, Qnil); |
422 | } | |
423 | ||
424 | /* Make sure this value is of a type that we could transmit | |
425 | to another X client. */ | |
a87ed99c | 426 | |
ede4db72 RS |
427 | check = value; |
428 | if (CONSP (value) | |
8e713be6 | 429 | && SYMBOLP (XCAR (value))) |
8e713be6 | 430 | check = XCDR (value); |
1b65481e | 431 | |
ede4db72 RS |
432 | if (STRINGP (check) |
433 | || VECTORP (check) | |
434 | || SYMBOLP (check) | |
7da64e5c | 435 | || INTEGERP (check) |
ede4db72 RS |
436 | || NILP (value)) |
437 | return value; | |
be44ca6c | 438 | /* Check for a value that CONS_TO_INTEGER could handle. */ |
ede4db72 | 439 | else if (CONSP (check) |
8e713be6 KR |
440 | && INTEGERP (XCAR (check)) |
441 | && (INTEGERP (XCDR (check)) | |
ede4db72 | 442 | || |
8e713be6 KR |
443 | (CONSP (XCDR (check)) |
444 | && INTEGERP (XCAR (XCDR (check))) | |
445 | && NILP (XCDR (XCDR (check)))))) | |
ede4db72 | 446 | return value; |
4d30ce50 KS |
447 | |
448 | signal_error ("Invalid data returned by selection-conversion function", | |
449 | list2 (handler_fn, value)); | |
ede4db72 RS |
450 | } |
451 | \f | |
452 | /* Subroutines of x_reply_selection_request. */ | |
453 | ||
5d0ba25b | 454 | /* Send a SelectionNotify event to the requestor with property=None, |
ede4db72 RS |
455 | meaning we were unable to do what they wanted. */ |
456 | ||
457 | static void | |
971de7fb | 458 | x_decline_selection_request (struct input_event *event) |
ede4db72 | 459 | { |
65969f63 CY |
460 | XEvent reply_base; |
461 | XSelectionEvent *reply = &(reply_base.xselection); | |
1b65481e | 462 | |
65969f63 CY |
463 | reply->type = SelectionNotify; |
464 | reply->display = SELECTION_EVENT_DISPLAY (event); | |
465 | reply->requestor = SELECTION_EVENT_REQUESTOR (event); | |
466 | reply->selection = SELECTION_EVENT_SELECTION (event); | |
467 | reply->time = SELECTION_EVENT_TIME (event); | |
468 | reply->target = SELECTION_EVENT_TARGET (event); | |
469 | reply->property = None; | |
ede4db72 | 470 | |
d9c0d4a3 GM |
471 | /* The reason for the error may be that the receiver has |
472 | died in the meantime. Handle that case. */ | |
ede4db72 | 473 | BLOCK_INPUT; |
65969f63 CY |
474 | x_catch_errors (reply->display); |
475 | XSendEvent (reply->display, reply->requestor, False, 0L, &reply_base); | |
476 | XFlush (reply->display); | |
4545fa20 | 477 | x_uncatch_errors (); |
ede4db72 RS |
478 | UNBLOCK_INPUT; |
479 | } | |
480 | ||
481 | /* This is the selection request currently being processed. | |
482 | It is set to zero when the request is fully processed. */ | |
483 | static struct input_event *x_selection_current_request; | |
484 | ||
ca29f2b8 GM |
485 | /* Display info in x_selection_request. */ |
486 | ||
487 | static struct x_display_info *selection_request_dpyinfo; | |
488 | ||
e067f0c1 CY |
489 | /* Raw selection data, for sending to a requestor window. */ |
490 | ||
491 | struct selection_data | |
492 | { | |
493 | unsigned char *data; | |
864d7ce7 | 494 | ptrdiff_t size; |
e067f0c1 CY |
495 | int format; |
496 | Atom type; | |
497 | int nofree; | |
498 | Atom property; | |
499 | /* This can be set to non-NULL during x_reply_selection_request, if | |
500 | the selection is waiting for an INCR transfer to complete. Don't | |
501 | free these; that's done by unexpect_property_change. */ | |
502 | struct prop_location *wait_object; | |
503 | struct selection_data *next; | |
504 | }; | |
505 | ||
506 | /* Linked list of the above (in support of MULTIPLE targets). */ | |
507 | ||
0196f88a | 508 | static struct selection_data *converted_selections; |
e067f0c1 CY |
509 | |
510 | /* "Data" to send a requestor for a failed MULTIPLE subtarget. */ | |
0196f88a | 511 | static Atom conversion_fail_tag; |
e067f0c1 | 512 | |
ede4db72 | 513 | /* Used as an unwind-protect clause so that, if a selection-converter signals |
fa463103 | 514 | an error, we tell the requestor that we were unable to do what they wanted |
ede4db72 RS |
515 | before we throw to top-level or go into the debugger or whatever. */ |
516 | ||
517 | static Lisp_Object | |
971de7fb | 518 | x_selection_request_lisp_error (Lisp_Object ignore) |
ede4db72 | 519 | { |
e067f0c1 CY |
520 | struct selection_data *cs, *next; |
521 | ||
522 | for (cs = converted_selections; cs; cs = next) | |
523 | { | |
524 | next = cs->next; | |
525 | if (cs->nofree == 0 && cs->data) | |
526 | xfree (cs->data); | |
527 | xfree (cs); | |
528 | } | |
529 | converted_selections = NULL; | |
530 | ||
ca29f2b8 GM |
531 | if (x_selection_current_request != 0 |
532 | && selection_request_dpyinfo->display) | |
ede4db72 RS |
533 | x_decline_selection_request (x_selection_current_request); |
534 | return Qnil; | |
535 | } | |
c525d842 CY |
536 | |
537 | static Lisp_Object | |
971de7fb | 538 | x_catch_errors_unwind (Lisp_Object dummy) |
c525d842 CY |
539 | { |
540 | BLOCK_INPUT; | |
541 | x_uncatch_errors (); | |
542 | UNBLOCK_INPUT; | |
6f10509c | 543 | return Qnil; |
c525d842 | 544 | } |
ede4db72 | 545 | \f |
d1f21a66 RS |
546 | |
547 | /* This stuff is so that INCR selections are reentrant (that is, so we can | |
548 | be servicing multiple INCR selection requests simultaneously.) I haven't | |
549 | actually tested that yet. */ | |
550 | ||
551 | /* Keep a list of the property changes that are awaited. */ | |
552 | ||
553 | struct prop_location | |
554 | { | |
555 | int identifier; | |
556 | Display *display; | |
557 | Window window; | |
558 | Atom property; | |
559 | int desired_state; | |
560 | int arrived; | |
561 | struct prop_location *next; | |
562 | }; | |
563 | ||
971de7fb DN |
564 | static struct prop_location *expect_property_change (Display *display, Window window, Atom property, int state); |
565 | static void wait_for_property_change (struct prop_location *location); | |
566 | static void unexpect_property_change (struct prop_location *location); | |
567 | static int waiting_for_other_props_on_window (Display *display, Window window); | |
d1f21a66 RS |
568 | |
569 | static int prop_location_identifier; | |
570 | ||
571 | static Lisp_Object property_change_reply; | |
572 | ||
573 | static struct prop_location *property_change_reply_object; | |
574 | ||
575 | static struct prop_location *property_change_wait_list; | |
55b2d45d RS |
576 | |
577 | static Lisp_Object | |
971de7fb | 578 | queue_selection_requests_unwind (Lisp_Object tem) |
55b2d45d | 579 | { |
dd0fe424 | 580 | x_stop_queuing_selection_requests (); |
ab552306 | 581 | return Qnil; |
55b2d45d RS |
582 | } |
583 | ||
d1f21a66 | 584 | \f |
e067f0c1 | 585 | /* Send the reply to a selection request event EVENT. */ |
ede4db72 | 586 | |
46d47e41 | 587 | #ifdef TRACE_SELECTION |
ca7af97a | 588 | static int x_reply_selection_request_cnt; |
46d47e41 GM |
589 | #endif /* TRACE_SELECTION */ |
590 | ||
ede4db72 | 591 | static void |
5e617bc2 JB |
592 | x_reply_selection_request (struct input_event *event, |
593 | struct x_display_info *dpyinfo) | |
ede4db72 | 594 | { |
65969f63 CY |
595 | XEvent reply_base; |
596 | XSelectionEvent *reply = &(reply_base.xselection); | |
ede4db72 | 597 | Display *display = SELECTION_EVENT_DISPLAY (event); |
5d0ba25b | 598 | Window window = SELECTION_EVENT_REQUESTOR (event); |
864d7ce7 PE |
599 | ptrdiff_t bytes_remaining; |
600 | int max_bytes = selection_quantum (display); | |
d311d28c | 601 | ptrdiff_t count = SPECPDL_INDEX (); |
e067f0c1 | 602 | struct selection_data *cs; |
ede4db72 | 603 | |
65969f63 CY |
604 | reply->type = SelectionNotify; |
605 | reply->display = display; | |
606 | reply->requestor = window; | |
607 | reply->selection = SELECTION_EVENT_SELECTION (event); | |
608 | reply->time = SELECTION_EVENT_TIME (event); | |
609 | reply->target = SELECTION_EVENT_TARGET (event); | |
610 | reply->property = SELECTION_EVENT_PROPERTY (event); | |
611 | if (reply->property == None) | |
612 | reply->property = reply->target; | |
ede4db72 | 613 | |
afe1529d | 614 | BLOCK_INPUT; |
c525d842 CY |
615 | /* The protected block contains wait_for_property_change, which can |
616 | run random lisp code (process handlers) or signal. Therefore, we | |
617 | put the x_uncatch_errors call in an unwind. */ | |
618 | record_unwind_protect (x_catch_errors_unwind, Qnil); | |
9ba8e10d | 619 | x_catch_errors (display); |
ede4db72 | 620 | |
e067f0c1 CY |
621 | /* Loop over converted selections, storing them in the requested |
622 | properties. If data is large, only store the first N bytes | |
623 | (section 2.7.2 of ICCCM). Note that we store the data for a | |
624 | MULTIPLE request in the opposite order; the ICCM says only that | |
625 | the conversion itself must be done in the same order. */ | |
626 | for (cs = converted_selections; cs; cs = cs->next) | |
627 | { | |
a9f737ee CY |
628 | if (cs->property == None) |
629 | continue; | |
630 | ||
864d7ce7 PE |
631 | bytes_remaining = cs->size; |
632 | bytes_remaining *= cs->format >> 3; | |
a9f737ee | 633 | if (bytes_remaining <= max_bytes) |
e067f0c1 | 634 | { |
a9f737ee | 635 | /* Send all the data at once, with minimal handshaking. */ |
864d7ce7 | 636 | TRACE1 ("Sending all %"pD"d bytes", bytes_remaining); |
a9f737ee CY |
637 | XChangeProperty (display, window, cs->property, |
638 | cs->type, cs->format, PropModeReplace, | |
639 | cs->data, cs->size); | |
640 | } | |
641 | else | |
642 | { | |
643 | /* Send an INCR tag to initiate incremental transfer. */ | |
252c5ee1 | 644 | long value[1]; |
a9f737ee | 645 | |
864d7ce7 | 646 | TRACE2 ("Start sending %"pD"d bytes incrementally (%s)", |
a9f737ee CY |
647 | bytes_remaining, XGetAtomName (display, cs->property)); |
648 | cs->wait_object | |
649 | = expect_property_change (display, window, cs->property, | |
650 | PropertyDelete); | |
651 | ||
652 | /* XChangeProperty expects an array of long even if long is | |
653 | more than 32 bits. */ | |
252c5ee1 | 654 | value[0] = min (bytes_remaining, X_LONG_MAX); |
a9f737ee CY |
655 | XChangeProperty (display, window, cs->property, |
656 | dpyinfo->Xatom_INCR, 32, PropModeReplace, | |
657 | (unsigned char *) value, 1); | |
658 | XSelectInput (display, window, PropertyChangeMask); | |
e067f0c1 CY |
659 | } |
660 | } | |
661 | ||
662 | /* Now issue the SelectionNotify event. */ | |
663 | XSendEvent (display, window, False, 0L, &reply_base); | |
664 | XFlush (display); | |
665 | ||
9c3ad9e1 JD |
666 | #ifdef TRACE_SELECTION |
667 | { | |
65969f63 CY |
668 | char *sel = XGetAtomName (display, reply->selection); |
669 | char *tgt = XGetAtomName (display, reply->target); | |
e067f0c1 CY |
670 | TRACE3 ("Sent SelectionNotify: %s, target %s (%d)", |
671 | sel, tgt, ++x_reply_selection_request_cnt); | |
9c3ad9e1 JD |
672 | if (sel) XFree (sel); |
673 | if (tgt) XFree (tgt); | |
674 | } | |
675 | #endif /* TRACE_SELECTION */ | |
676 | ||
e067f0c1 CY |
677 | /* Finish sending the rest of each of the INCR values. This should |
678 | be improved; there's a chance of deadlock if more than one | |
679 | subtarget in a MULTIPLE selection requires an INCR transfer, and | |
680 | the requestor and Emacs loop waiting on different transfers. */ | |
681 | for (cs = converted_selections; cs; cs = cs->next) | |
682 | if (cs->wait_object) | |
e22cf39c | 683 | { |
e067f0c1 CY |
684 | int format_bytes = cs->format / 8; |
685 | int had_errors = x_had_errors_p (display); | |
686 | UNBLOCK_INPUT; | |
1b65481e | 687 | |
864d7ce7 PE |
688 | bytes_remaining = cs->size; |
689 | bytes_remaining *= format_bytes; | |
ede4db72 | 690 | |
fa463103 | 691 | /* Wait for the requestor to ack by deleting the property. |
e067f0c1 CY |
692 | This can run Lisp code (process handlers) or signal. */ |
693 | if (! had_errors) | |
694 | { | |
695 | TRACE1 ("Waiting for ACK (deletion of %s)", | |
696 | XGetAtomName (display, cs->property)); | |
697 | wait_for_property_change (cs->wait_object); | |
698 | } | |
699 | else | |
700 | unexpect_property_change (cs->wait_object); | |
ede4db72 | 701 | |
e067f0c1 CY |
702 | while (bytes_remaining) |
703 | { | |
704 | int i = ((bytes_remaining < max_bytes) | |
705 | ? bytes_remaining | |
706 | : max_bytes) / format_bytes; | |
707 | BLOCK_INPUT; | |
708 | ||
709 | cs->wait_object | |
710 | = expect_property_change (display, window, cs->property, | |
711 | PropertyDelete); | |
712 | ||
713 | TRACE1 ("Sending increment of %d elements", i); | |
714 | TRACE1 ("Set %s to increment data", | |
715 | XGetAtomName (display, cs->property)); | |
716 | ||
717 | /* Append the next chunk of data to the property. */ | |
718 | XChangeProperty (display, window, cs->property, | |
719 | cs->type, cs->format, PropModeAppend, | |
720 | cs->data, i); | |
721 | bytes_remaining -= i * format_bytes; | |
a9f737ee CY |
722 | cs->data += i * ((cs->format == 32) ? sizeof (long) |
723 | : format_bytes); | |
e067f0c1 CY |
724 | XFlush (display); |
725 | had_errors = x_had_errors_p (display); | |
726 | UNBLOCK_INPUT; | |
ede4db72 | 727 | |
e067f0c1 | 728 | if (had_errors) break; |
afe1529d | 729 | |
fa463103 | 730 | /* Wait for the requestor to ack this chunk by deleting |
e067f0c1 CY |
731 | the property. This can run Lisp code or signal. */ |
732 | TRACE1 ("Waiting for increment ACK (deletion of %s)", | |
733 | XGetAtomName (display, cs->property)); | |
734 | wait_for_property_change (cs->wait_object); | |
735 | } | |
1b65481e | 736 | |
e067f0c1 | 737 | /* Now write a zero-length chunk to the property to tell the |
fa463103 | 738 | requestor that we're done. */ |
e067f0c1 CY |
739 | BLOCK_INPUT; |
740 | if (! waiting_for_other_props_on_window (display, window)) | |
741 | XSelectInput (display, window, 0L); | |
742 | ||
743 | TRACE1 ("Set %s to a 0-length chunk to indicate EOF", | |
744 | XGetAtomName (display, cs->property)); | |
745 | XChangeProperty (display, window, cs->property, | |
746 | cs->type, cs->format, PropModeReplace, | |
747 | cs->data, 0); | |
748 | TRACE0 ("Done sending incrementally"); | |
749 | } | |
afe1529d | 750 | |
ceabd272 | 751 | /* rms, 2003-01-03: I think I have fixed this bug. */ |
47a6ac17 GM |
752 | /* The window we're communicating with may have been deleted |
753 | in the meantime (that's a real situation from a bug report). | |
754 | In this case, there may be events in the event queue still | |
fac916bf | 755 | referring to the deleted window, and we'll get a BadWindow error |
47a6ac17 GM |
756 | in XTread_socket when processing the events. I don't have |
757 | an idea how to fix that. gerd, 2001-01-98. */ | |
844fc085 JD |
758 | /* 2004-09-10: XSync and UNBLOCK so that possible protocol errors are |
759 | delivered before uncatch errors. */ | |
760 | XSync (display, False); | |
afe1529d | 761 | UNBLOCK_INPUT; |
0608b1a0 JD |
762 | |
763 | /* GTK queues events in addition to the queue in Xlib. So we | |
764 | UNBLOCK to enter the event loop and get possible errors delivered, | |
765 | and then BLOCK again because x_uncatch_errors requires it. */ | |
766 | BLOCK_INPUT; | |
c525d842 | 767 | /* This calls x_uncatch_errors. */ |
9ba8e10d | 768 | unbind_to (count, Qnil); |
afe1529d | 769 | UNBLOCK_INPUT; |
ede4db72 RS |
770 | } |
771 | \f | |
772 | /* Handle a SelectionRequest event EVENT. | |
773 | This is called from keyboard.c when such an event is found in the queue. */ | |
774 | ||
dd0fe424 | 775 | static void |
971de7fb | 776 | x_handle_selection_request (struct input_event *event) |
ede4db72 | 777 | { |
e067f0c1 | 778 | struct gcpro gcpro1, gcpro2; |
ede4db72 | 779 | Time local_selection_time; |
e067f0c1 CY |
780 | |
781 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
782 | struct x_display_info *dpyinfo = x_display_info_for_display (display); | |
e067f0c1 CY |
783 | Atom selection = SELECTION_EVENT_SELECTION (event); |
784 | Lisp_Object selection_symbol = x_atom_to_symbol (display, selection); | |
785 | Atom target = SELECTION_EVENT_TARGET (event); | |
786 | Lisp_Object target_symbol = x_atom_to_symbol (display, target); | |
787 | Atom property = SELECTION_EVENT_PROPERTY (event); | |
a9f737ee | 788 | Lisp_Object local_selection_data; |
e067f0c1 | 789 | int success = 0; |
d311d28c | 790 | ptrdiff_t count = SPECPDL_INDEX (); |
e067f0c1 | 791 | GCPRO2 (local_selection_data, target_symbol); |
ede4db72 | 792 | |
a9f737ee CY |
793 | if (!dpyinfo) goto DONE; |
794 | ||
795 | local_selection_data = LOCAL_SELECTION (selection_symbol, dpyinfo); | |
796 | ||
e067f0c1 CY |
797 | /* Decline if we don't own any selections. */ |
798 | if (NILP (local_selection_data)) goto DONE; | |
ede4db72 | 799 | |
e067f0c1 | 800 | /* Decline requests issued prior to our acquiring the selection. */ |
be44ca6c PE |
801 | CONS_TO_INTEGER (XCAR (XCDR (XCDR (local_selection_data))), |
802 | Time, local_selection_time); | |
ede4db72 | 803 | if (SELECTION_EVENT_TIME (event) != CurrentTime |
7da64e5c | 804 | && local_selection_time > SELECTION_EVENT_TIME (event)) |
e067f0c1 | 805 | goto DONE; |
ede4db72 | 806 | |
ede4db72 | 807 | x_selection_current_request = event; |
ca29f2b8 | 808 | selection_request_dpyinfo = dpyinfo; |
ede4db72 RS |
809 | record_unwind_protect (x_selection_request_lisp_error, Qnil); |
810 | ||
e067f0c1 CY |
811 | /* We might be able to handle nested x_handle_selection_requests, |
812 | but this is difficult to test, and seems unimportant. */ | |
813 | x_start_queuing_selection_requests (); | |
814 | record_unwind_protect (queue_selection_requests_unwind, Qnil); | |
ede4db72 | 815 | |
757c9275 CY |
816 | TRACE2 ("x_handle_selection_request: selection=%s, target=%s", |
817 | SDATA (SYMBOL_NAME (selection_symbol)), | |
818 | SDATA (SYMBOL_NAME (target_symbol))); | |
819 | ||
ede4db72 | 820 | if (EQ (target_symbol, QMULTIPLE)) |
e067f0c1 CY |
821 | { |
822 | /* For MULTIPLE targets, the event property names a list of atom | |
823 | pairs; the first atom names a target and the second names a | |
824 | non-None property. */ | |
825 | Window requestor = SELECTION_EVENT_REQUESTOR (event); | |
826 | Lisp_Object multprop; | |
864d7ce7 | 827 | ptrdiff_t j, nselections; |
e067f0c1 CY |
828 | |
829 | if (property == None) goto DONE; | |
a9f737ee CY |
830 | multprop |
831 | = x_get_window_property_as_lisp_data (display, requestor, property, | |
832 | QMULTIPLE, selection); | |
e067f0c1 | 833 | |
757c9275 | 834 | if (!VECTORP (multprop) || ASIZE (multprop) % 2) |
e067f0c1 CY |
835 | goto DONE; |
836 | ||
837 | nselections = ASIZE (multprop) / 2; | |
838 | /* Perform conversions. This can signal. */ | |
839 | for (j = 0; j < nselections; j++) | |
840 | { | |
e067f0c1 | 841 | Lisp_Object subtarget = AREF (multprop, 2*j); |
a9f737ee | 842 | Atom subproperty = symbol_to_x_atom (dpyinfo, |
e067f0c1 CY |
843 | AREF (multprop, 2*j+1)); |
844 | ||
845 | if (subproperty != None) | |
846 | x_convert_selection (event, selection_symbol, subtarget, | |
a9f737ee | 847 | subproperty, 1, dpyinfo); |
e067f0c1 CY |
848 | } |
849 | success = 1; | |
850 | } | |
851 | else | |
852 | { | |
853 | if (property == None) | |
854 | property = SELECTION_EVENT_TARGET (event); | |
855 | success = x_convert_selection (event, selection_symbol, | |
a9f737ee CY |
856 | target_symbol, property, |
857 | 0, dpyinfo); | |
e067f0c1 | 858 | } |
1b65481e | 859 | |
e067f0c1 | 860 | DONE: |
1b65481e | 861 | |
e067f0c1 CY |
862 | if (success) |
863 | x_reply_selection_request (event, dpyinfo); | |
864 | else | |
865 | x_decline_selection_request (event); | |
866 | x_selection_current_request = 0; | |
1b65481e | 867 | |
e067f0c1 CY |
868 | /* Run the `x-sent-selection-functions' abnormal hook. */ |
869 | if (!NILP (Vx_sent_selection_functions) | |
870 | && !EQ (Vx_sent_selection_functions, Qunbound)) | |
ede4db72 | 871 | { |
e067f0c1 | 872 | Lisp_Object args[4]; |
cd18e7e3 | 873 | args[0] = Qx_sent_selection_functions; |
e067f0c1 CY |
874 | args[1] = selection_symbol; |
875 | args[2] = target_symbol; | |
876 | args[3] = success ? Qt : Qnil; | |
877 | Frun_hook_with_args (4, args); | |
878 | } | |
866f8518 | 879 | |
e067f0c1 CY |
880 | unbind_to (count, Qnil); |
881 | UNGCPRO; | |
882 | } | |
1b65481e | 883 | |
e067f0c1 CY |
884 | /* Perform the requested selection conversion, and write the data to |
885 | the converted_selections linked list, where it can be accessed by | |
886 | x_reply_selection_request. If FOR_MULTIPLE is non-zero, write out | |
887 | the data even if conversion fails, using conversion_fail_tag. | |
ede4db72 | 888 | |
e067f0c1 | 889 | Return 0 if the selection failed to convert, 1 otherwise. */ |
ede4db72 | 890 | |
e067f0c1 | 891 | static int |
a9f737ee CY |
892 | x_convert_selection (struct input_event *event, Lisp_Object selection_symbol, |
893 | Lisp_Object target_symbol, Atom property, | |
894 | int for_multiple, struct x_display_info *dpyinfo) | |
e067f0c1 CY |
895 | { |
896 | struct gcpro gcpro1; | |
897 | Lisp_Object lisp_selection; | |
898 | struct selection_data *cs; | |
899 | GCPRO1 (lisp_selection); | |
866f8518 | 900 | |
e067f0c1 | 901 | lisp_selection |
a9f737ee CY |
902 | = x_get_local_selection (selection_symbol, target_symbol, |
903 | 0, dpyinfo); | |
ede4db72 | 904 | |
e067f0c1 CY |
905 | /* A nil return value means we can't perform the conversion. */ |
906 | if (NILP (lisp_selection) | |
907 | || (CONSP (lisp_selection) && NILP (XCDR (lisp_selection)))) | |
908 | { | |
909 | if (for_multiple) | |
910 | { | |
38182d90 | 911 | cs = xmalloc (sizeof *cs); |
e067f0c1 CY |
912 | cs->data = (unsigned char *) &conversion_fail_tag; |
913 | cs->size = 1; | |
914 | cs->format = 32; | |
915 | cs->type = XA_ATOM; | |
916 | cs->nofree = 1; | |
917 | cs->property = property; | |
918 | cs->wait_object = NULL; | |
919 | cs->next = converted_selections; | |
920 | converted_selections = cs; | |
921 | } | |
ede4db72 | 922 | |
18480f8f SM |
923 | UNGCPRO; |
924 | return 0; | |
e067f0c1 | 925 | } |
4f06187f | 926 | |
e067f0c1 | 927 | /* Otherwise, record the converted selection to binary. */ |
38182d90 | 928 | cs = xmalloc (sizeof *cs); |
9be2fd9b | 929 | cs->data = NULL; |
e067f0c1 CY |
930 | cs->nofree = 1; |
931 | cs->property = property; | |
932 | cs->wait_object = NULL; | |
933 | cs->next = converted_selections; | |
934 | converted_selections = cs; | |
935 | lisp_data_to_selection_data (SELECTION_EVENT_DISPLAY (event), | |
936 | lisp_selection, | |
937 | &(cs->data), &(cs->type), | |
938 | &(cs->size), &(cs->format), | |
939 | &(cs->nofree)); | |
18480f8f SM |
940 | UNGCPRO; |
941 | return 1; | |
ede4db72 RS |
942 | } |
943 | \f | |
e18e6130 | 944 | /* Handle a SelectionClear event EVENT, which indicates that some |
ede4db72 RS |
945 | client cleared out our previously asserted selection. |
946 | This is called from keyboard.c when such an event is found in the queue. */ | |
947 | ||
dd0fe424 | 948 | static void |
971de7fb | 949 | x_handle_selection_clear (struct input_event *event) |
ede4db72 RS |
950 | { |
951 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
952 | Atom selection = SELECTION_EVENT_SELECTION (event); | |
953 | Time changed_owner_time = SELECTION_EVENT_TIME (event); | |
1b65481e | 954 | |
ede4db72 RS |
955 | Lisp_Object selection_symbol, local_selection_data; |
956 | Time local_selection_time; | |
5c3a351a | 957 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
a9f737ee | 958 | Lisp_Object Vselection_alist; |
e18e6130 | 959 | |
dd0fe424 KS |
960 | TRACE0 ("x_handle_selection_clear"); |
961 | ||
a9f737ee | 962 | if (!dpyinfo) return; |
16041401 | 963 | |
d9c0d4a3 | 964 | selection_symbol = x_atom_to_symbol (display, selection); |
a9f737ee | 965 | local_selection_data = LOCAL_SELECTION (selection_symbol, dpyinfo); |
ede4db72 RS |
966 | |
967 | /* Well, we already believe that we don't own it, so that's just fine. */ | |
968 | if (NILP (local_selection_data)) return; | |
969 | ||
be44ca6c PE |
970 | CONS_TO_INTEGER (XCAR (XCDR (XCDR (local_selection_data))), |
971 | Time, local_selection_time); | |
ede4db72 | 972 | |
a9f737ee CY |
973 | /* We have reasserted the selection since this SelectionClear was |
974 | generated, so we can disregard it. */ | |
ede4db72 RS |
975 | if (changed_owner_time != CurrentTime |
976 | && local_selection_time > changed_owner_time) | |
977 | return; | |
978 | ||
a9f737ee CY |
979 | /* Otherwise, really clear. Don't use Fdelq as that may QUIT;. */ |
980 | Vselection_alist = dpyinfo->terminal->Vselection_alist; | |
981 | if (EQ (local_selection_data, CAR (Vselection_alist))) | |
982 | Vselection_alist = XCDR (Vselection_alist); | |
ede4db72 RS |
983 | else |
984 | { | |
985 | Lisp_Object rest; | |
99784d63 | 986 | for (rest = Vselection_alist; CONSP (rest); rest = XCDR (rest)) |
a9f737ee | 987 | if (EQ (local_selection_data, CAR (XCDR (rest)))) |
ede4db72 | 988 | { |
a9f737ee | 989 | XSETCDR (rest, XCDR (XCDR (rest))); |
ede4db72 RS |
990 | break; |
991 | } | |
992 | } | |
3f22b86f | 993 | tset_selection_alist (dpyinfo->terminal, Vselection_alist); |
ede4db72 | 994 | |
a9f737ee | 995 | /* Run the `x-lost-selection-functions' abnormal hook. */ |
ede4db72 | 996 | { |
a9f737ee | 997 | Lisp_Object args[2]; |
cd18e7e3 | 998 | args[0] = Qx_lost_selection_functions; |
a9f737ee CY |
999 | args[1] = selection_symbol; |
1000 | Frun_hook_with_args (2, args); | |
ede4db72 | 1001 | } |
a9f737ee CY |
1002 | |
1003 | prepare_menu_bars (); | |
1004 | redisplay_preserve_echo_area (20); | |
ede4db72 RS |
1005 | } |
1006 | ||
dd0fe424 | 1007 | void |
971de7fb | 1008 | x_handle_selection_event (struct input_event *event) |
dd0fe424 KS |
1009 | { |
1010 | TRACE0 ("x_handle_selection_event"); | |
e067f0c1 | 1011 | if (event->kind != SELECTION_REQUEST_EVENT) |
dd0fe424 | 1012 | x_handle_selection_clear (event); |
e067f0c1 CY |
1013 | else if (x_queue_selection_requests) |
1014 | x_queue_event (event); | |
1015 | else | |
1016 | x_handle_selection_request (event); | |
dd0fe424 KS |
1017 | } |
1018 | ||
1019 | ||
118bd841 RS |
1020 | /* Clear all selections that were made from frame F. |
1021 | We do this when about to delete a frame. */ | |
1022 | ||
1023 | void | |
971de7fb | 1024 | x_clear_frame_selections (FRAME_PTR f) |
118bd841 RS |
1025 | { |
1026 | Lisp_Object frame; | |
1027 | Lisp_Object rest; | |
a9f737ee CY |
1028 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
1029 | struct terminal *t = dpyinfo->terminal; | |
118bd841 | 1030 | |
90851bbe | 1031 | XSETFRAME (frame, f); |
118bd841 | 1032 | |
0d199f9c | 1033 | /* Delete elements from the beginning of Vselection_alist. */ |
a9f737ee CY |
1034 | while (CONSP (t->Vselection_alist) |
1035 | && EQ (frame, XCAR (XCDR (XCDR (XCDR (XCAR (t->Vselection_alist))))))) | |
0d199f9c | 1036 | { |
a9f737ee CY |
1037 | /* Run the `x-lost-selection-functions' abnormal hook. */ |
1038 | Lisp_Object args[2]; | |
cd18e7e3 | 1039 | args[0] = Qx_lost_selection_functions; |
a9f737ee CY |
1040 | args[1] = Fcar (Fcar (t->Vselection_alist)); |
1041 | Frun_hook_with_args (2, args); | |
0d199f9c | 1042 | |
3f22b86f | 1043 | tset_selection_alist (t, XCDR (t->Vselection_alist)); |
0d199f9c RS |
1044 | } |
1045 | ||
1046 | /* Delete elements after the beginning of Vselection_alist. */ | |
a9f737ee CY |
1047 | for (rest = t->Vselection_alist; CONSP (rest); rest = XCDR (rest)) |
1048 | if (CONSP (XCDR (rest)) | |
1049 | && EQ (frame, XCAR (XCDR (XCDR (XCDR (XCAR (XCDR (rest)))))))) | |
118bd841 | 1050 | { |
a9f737ee | 1051 | Lisp_Object args[2]; |
cd18e7e3 | 1052 | args[0] = Qx_lost_selection_functions; |
a9f737ee CY |
1053 | args[1] = XCAR (XCAR (XCDR (rest))); |
1054 | Frun_hook_with_args (2, args); | |
1055 | XSETCDR (rest, XCDR (XCDR (rest))); | |
118bd841 RS |
1056 | break; |
1057 | } | |
1058 | } | |
ede4db72 | 1059 | \f |
ede4db72 RS |
1060 | /* Nonzero if any properties for DISPLAY and WINDOW |
1061 | are on the list of what we are waiting for. */ | |
1062 | ||
1063 | static int | |
971de7fb | 1064 | waiting_for_other_props_on_window (Display *display, Window window) |
ede4db72 RS |
1065 | { |
1066 | struct prop_location *rest = property_change_wait_list; | |
1067 | while (rest) | |
1068 | if (rest->display == display && rest->window == window) | |
1069 | return 1; | |
1070 | else | |
1071 | rest = rest->next; | |
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | /* Add an entry to the list of property changes we are waiting for. | |
1076 | DISPLAY, WINDOW, PROPERTY, STATE describe what we will wait for. | |
1077 | The return value is a number that uniquely identifies | |
1078 | this awaited property change. */ | |
1079 | ||
d1f21a66 | 1080 | static struct prop_location * |
5e617bc2 JB |
1081 | expect_property_change (Display *display, Window window, |
1082 | Atom property, int state) | |
ede4db72 | 1083 | { |
23f86fce | 1084 | struct prop_location *pl = xmalloc (sizeof *pl); |
2f65feb6 | 1085 | pl->identifier = ++prop_location_identifier; |
ede4db72 RS |
1086 | pl->display = display; |
1087 | pl->window = window; | |
1088 | pl->property = property; | |
1089 | pl->desired_state = state; | |
1090 | pl->next = property_change_wait_list; | |
d1f21a66 | 1091 | pl->arrived = 0; |
ede4db72 | 1092 | property_change_wait_list = pl; |
d1f21a66 | 1093 | return pl; |
ede4db72 RS |
1094 | } |
1095 | ||
1096 | /* Delete an entry from the list of property changes we are waiting for. | |
2f65feb6 | 1097 | IDENTIFIER is the number that uniquely identifies the entry. */ |
ede4db72 RS |
1098 | |
1099 | static void | |
971de7fb | 1100 | unexpect_property_change (struct prop_location *location) |
ede4db72 RS |
1101 | { |
1102 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
1103 | while (rest) | |
1104 | { | |
d1f21a66 | 1105 | if (rest == location) |
ede4db72 RS |
1106 | { |
1107 | if (prev) | |
1108 | prev->next = rest->next; | |
1109 | else | |
1110 | property_change_wait_list = rest->next; | |
4feb31b2 | 1111 | xfree (rest); |
ede4db72 RS |
1112 | return; |
1113 | } | |
1114 | prev = rest; | |
1115 | rest = rest->next; | |
1116 | } | |
1117 | } | |
1118 | ||
2f65feb6 RS |
1119 | /* Remove the property change expectation element for IDENTIFIER. */ |
1120 | ||
1121 | static Lisp_Object | |
971de7fb | 1122 | wait_for_property_change_unwind (Lisp_Object loc) |
2f65feb6 | 1123 | { |
dd0fe424 KS |
1124 | struct prop_location *location = XSAVE_VALUE (loc)->pointer; |
1125 | ||
1126 | unexpect_property_change (location); | |
1127 | if (location == property_change_reply_object) | |
1128 | property_change_reply_object = 0; | |
ab552306 | 1129 | return Qnil; |
2f65feb6 RS |
1130 | } |
1131 | ||
ede4db72 | 1132 | /* Actually wait for a property change. |
2f65feb6 | 1133 | IDENTIFIER should be the value that expect_property_change returned. */ |
ede4db72 RS |
1134 | |
1135 | static void | |
971de7fb | 1136 | wait_for_property_change (struct prop_location *location) |
ede4db72 | 1137 | { |
d311d28c | 1138 | ptrdiff_t count = SPECPDL_INDEX (); |
d1f21a66 | 1139 | |
dd0fe424 KS |
1140 | if (property_change_reply_object) |
1141 | abort (); | |
2f65feb6 RS |
1142 | |
1143 | /* Make sure to do unexpect_property_change if we quit or err. */ | |
dd0fe424 KS |
1144 | record_unwind_protect (wait_for_property_change_unwind, |
1145 | make_save_value (location, 0)); | |
2f65feb6 | 1146 | |
f3fbd155 | 1147 | XSETCAR (property_change_reply, Qnil); |
afe1529d | 1148 | property_change_reply_object = location; |
dd0fe424 | 1149 | |
afe1529d RS |
1150 | /* If the event we are waiting for arrives beyond here, it will set |
1151 | property_change_reply, because property_change_reply_object says so. */ | |
d1f21a66 RS |
1152 | if (! location->arrived) |
1153 | { | |
d35af63c PE |
1154 | EMACS_INT timeout = max (0, x_selection_timeout); |
1155 | EMACS_INT secs = timeout / 1000; | |
1156 | int nsecs = (timeout % 1000) * 1000000; | |
1157 | TRACE2 (" Waiting %"pI"d secs, %d nsecs", secs, nsecs); | |
1158 | wait_reading_process_output (secs, nsecs, 0, 0, | |
d64b707c | 1159 | property_change_reply, NULL, 0); |
d1f21a66 | 1160 | |
8e713be6 | 1161 | if (NILP (XCAR (property_change_reply))) |
d9c0d4a3 GM |
1162 | { |
1163 | TRACE0 (" Timed out"); | |
1164 | error ("Timed out waiting for property-notify event"); | |
1165 | } | |
d1f21a66 | 1166 | } |
2f65feb6 RS |
1167 | |
1168 | unbind_to (count, Qnil); | |
ede4db72 RS |
1169 | } |
1170 | ||
1171 | /* Called from XTread_socket in response to a PropertyNotify event. */ | |
1172 | ||
1173 | void | |
971de7fb | 1174 | x_handle_property_notify (XPropertyEvent *event) |
ede4db72 | 1175 | { |
6abdaa4a | 1176 | struct prop_location *rest; |
d9c0d4a3 | 1177 | |
6abdaa4a | 1178 | for (rest = property_change_wait_list; rest; rest = rest->next) |
ede4db72 | 1179 | { |
dd0fe424 KS |
1180 | if (!rest->arrived |
1181 | && rest->property == event->atom | |
ede4db72 RS |
1182 | && rest->window == event->window |
1183 | && rest->display == event->display | |
1184 | && rest->desired_state == event->state) | |
1185 | { | |
d9c0d4a3 GM |
1186 | TRACE2 ("Expected %s of property %s", |
1187 | (event->state == PropertyDelete ? "deletion" : "change"), | |
1188 | XGetAtomName (event->display, event->atom)); | |
ede4db72 | 1189 | |
d1f21a66 RS |
1190 | rest->arrived = 1; |
1191 | ||
ede4db72 RS |
1192 | /* If this is the one wait_for_property_change is waiting for, |
1193 | tell it to wake up. */ | |
d1f21a66 | 1194 | if (rest == property_change_reply_object) |
f3fbd155 | 1195 | XSETCAR (property_change_reply, Qt); |
ede4db72 | 1196 | |
ede4db72 RS |
1197 | return; |
1198 | } | |
ede4db72 | 1199 | } |
ede4db72 RS |
1200 | } |
1201 | ||
1202 | ||
1203 | \f | |
ede4db72 RS |
1204 | /* Variables for communication with x_handle_selection_notify. */ |
1205 | static Atom reading_which_selection; | |
1206 | static Lisp_Object reading_selection_reply; | |
1207 | static Window reading_selection_window; | |
1208 | ||
1209 | /* Do protocol to read selection-data from the server. | |
a9f737ee CY |
1210 | Converts this to Lisp data and returns it. |
1211 | FRAME is the frame whose X window shall request the selection. */ | |
ede4db72 RS |
1212 | |
1213 | static Lisp_Object | |
a9f737ee CY |
1214 | x_get_foreign_selection (Lisp_Object selection_symbol, Lisp_Object target_type, |
1215 | Lisp_Object time_stamp, Lisp_Object frame) | |
ede4db72 | 1216 | { |
a9f737ee CY |
1217 | struct frame *f = XFRAME (frame); |
1218 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
1219 | Display *display = dpyinfo->display; | |
1220 | Window requestor_window = FRAME_X_WINDOW (f); | |
5d0ba25b | 1221 | Time requestor_time = last_event_timestamp; |
a9f737ee CY |
1222 | Atom target_property = dpyinfo->Xatom_EMACS_TMP; |
1223 | Atom selection_atom = symbol_to_x_atom (dpyinfo, selection_symbol); | |
1224 | Atom type_atom = (CONSP (target_type) | |
1225 | ? symbol_to_x_atom (dpyinfo, XCAR (target_type)) | |
1226 | : symbol_to_x_atom (dpyinfo, target_type)); | |
d35af63c PE |
1227 | EMACS_INT timeout, secs; |
1228 | int nsecs; | |
ede4db72 | 1229 | |
a9f737ee | 1230 | if (!FRAME_LIVE_P (f)) |
428a555e KL |
1231 | return Qnil; |
1232 | ||
3a42401d | 1233 | if (! NILP (time_stamp)) |
be44ca6c | 1234 | CONS_TO_INTEGER (time_stamp, Time, requestor_time); |
3a42401d | 1235 | |
ede4db72 | 1236 | BLOCK_INPUT; |
d9c0d4a3 GM |
1237 | TRACE2 ("Get selection %s, type %s", |
1238 | XGetAtomName (display, type_atom), | |
1239 | XGetAtomName (display, target_property)); | |
1240 | ||
de65b42c | 1241 | x_catch_errors (display); |
ede4db72 | 1242 | XConvertSelection (display, selection_atom, type_atom, target_property, |
5d0ba25b | 1243 | requestor_window, requestor_time); |
de65b42c CY |
1244 | x_check_errors (display, "Can't convert selection: %s"); |
1245 | x_uncatch_errors (); | |
ede4db72 RS |
1246 | |
1247 | /* Prepare to block until the reply has been read. */ | |
5d0ba25b | 1248 | reading_selection_window = requestor_window; |
ede4db72 | 1249 | reading_which_selection = selection_atom; |
f3fbd155 | 1250 | XSETCAR (reading_selection_reply, Qnil); |
55b2d45d | 1251 | |
e067f0c1 CY |
1252 | /* It should not be necessary to stop handling selection requests |
1253 | during this time. In fact, the SAVE_TARGETS mechanism requires | |
1254 | us to handle a clipboard manager's requests before it returns | |
1255 | SelectionNotify. */ | |
1256 | #if 0 | |
a9f737ee CY |
1257 | x_start_queuing_selection_requests (); |
1258 | record_unwind_protect (queue_selection_requests_unwind, Qnil); | |
e067f0c1 CY |
1259 | #endif |
1260 | ||
ede4db72 RS |
1261 | UNBLOCK_INPUT; |
1262 | ||
80da0190 | 1263 | /* This allows quits. Also, don't wait forever. */ |
d35af63c PE |
1264 | timeout = max (0, x_selection_timeout); |
1265 | secs = timeout / 1000; | |
1266 | nsecs = (timeout % 1000) * 1000000; | |
1267 | TRACE1 (" Start waiting %"pI"d secs for SelectionNotify", secs); | |
1268 | wait_reading_process_output (secs, nsecs, 0, 0, | |
d64b707c | 1269 | reading_selection_reply, NULL, 0); |
d9c0d4a3 | 1270 | TRACE1 (" Got event = %d", !NILP (XCAR (reading_selection_reply))); |
ede4db72 | 1271 | |
8e713be6 | 1272 | if (NILP (XCAR (reading_selection_reply))) |
606140dd | 1273 | error ("Timed out waiting for reply from selection owner"); |
8e713be6 | 1274 | if (EQ (XCAR (reading_selection_reply), Qlambda)) |
12061f06 | 1275 | return Qnil; |
ede4db72 RS |
1276 | |
1277 | /* Otherwise, the selection is waiting for us on the requested property. */ | |
1278 | return | |
5d0ba25b | 1279 | x_get_window_property_as_lisp_data (display, requestor_window, |
ede4db72 RS |
1280 | target_property, target_type, |
1281 | selection_atom); | |
1282 | } | |
1283 | \f | |
1284 | /* Subroutines of x_get_window_property_as_lisp_data */ | |
1285 | ||
4feb31b2 | 1286 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1287 | |
ede4db72 | 1288 | static void |
d5a3eaaf | 1289 | x_get_window_property (Display *display, Window window, Atom property, |
864d7ce7 | 1290 | unsigned char **data_ret, ptrdiff_t *bytes_ret, |
d5a3eaaf AS |
1291 | Atom *actual_type_ret, int *actual_format_ret, |
1292 | unsigned long *actual_size_ret, int delete_p) | |
ede4db72 | 1293 | { |
864d7ce7 | 1294 | ptrdiff_t total_size; |
ede4db72 | 1295 | unsigned long bytes_remaining; |
864d7ce7 PE |
1296 | ptrdiff_t offset = 0; |
1297 | unsigned char *data = 0; | |
ede4db72 RS |
1298 | unsigned char *tmp_data = 0; |
1299 | int result; | |
864d7ce7 PE |
1300 | int buffer_size = selection_quantum (display); |
1301 | ||
1302 | /* Wide enough to avoid overflow in expressions using it. */ | |
1303 | ptrdiff_t x_long_size = X_LONG_SIZE; | |
1b65481e | 1304 | |
864d7ce7 PE |
1305 | /* Maximum value for TOTAL_SIZE. It cannot exceed PTRDIFF_MAX - 1 |
1306 | and SIZE_MAX - 1, for an extra byte at the end. And it cannot | |
1307 | exceed LONG_MAX * X_LONG_SIZE, for XGetWindowProperty. */ | |
1308 | ptrdiff_t total_size_max = | |
1309 | ((min (PTRDIFF_MAX, SIZE_MAX) - 1) / x_long_size < LONG_MAX | |
1310 | ? min (PTRDIFF_MAX, SIZE_MAX) - 1 | |
1311 | : LONG_MAX * x_long_size); | |
1b65481e | 1312 | |
ede4db72 | 1313 | BLOCK_INPUT; |
1b65481e | 1314 | |
ede4db72 RS |
1315 | /* First probe the thing to find out how big it is. */ |
1316 | result = XGetWindowProperty (display, window, property, | |
137edb72 | 1317 | 0L, 0L, False, AnyPropertyType, |
ede4db72 RS |
1318 | actual_type_ret, actual_format_ret, |
1319 | actual_size_ret, | |
1320 | &bytes_remaining, &tmp_data); | |
ede4db72 | 1321 | if (result != Success) |
864d7ce7 | 1322 | goto done; |
1b65481e | 1323 | |
0158abbc | 1324 | /* This was allocated by Xlib, so use XFree. */ |
98c6f1e3 | 1325 | XFree (tmp_data); |
1b65481e | 1326 | |
ede4db72 | 1327 | if (*actual_type_ret == None || *actual_format_ret == 0) |
864d7ce7 | 1328 | goto done; |
ede4db72 | 1329 | |
864d7ce7 PE |
1330 | if (total_size_max < bytes_remaining) |
1331 | goto size_overflow; | |
1332 | total_size = bytes_remaining; | |
1333 | data = malloc (total_size + 1); | |
1334 | if (! data) | |
1335 | goto memory_exhausted; | |
1b65481e | 1336 | |
2a1a4c9d | 1337 | /* Now read, until we've gotten it all. */ |
ede4db72 RS |
1338 | while (bytes_remaining) |
1339 | { | |
864d7ce7 PE |
1340 | ptrdiff_t bytes_gotten; |
1341 | int bytes_per_item; | |
ede4db72 RS |
1342 | result |
1343 | = XGetWindowProperty (display, window, property, | |
864d7ce7 PE |
1344 | offset / X_LONG_SIZE, |
1345 | buffer_size / X_LONG_SIZE, | |
2f65feb6 | 1346 | False, |
ede4db72 RS |
1347 | AnyPropertyType, |
1348 | actual_type_ret, actual_format_ret, | |
1349 | actual_size_ret, &bytes_remaining, &tmp_data); | |
d9c0d4a3 | 1350 | |
ede4db72 RS |
1351 | /* If this doesn't return Success at this point, it means that |
1352 | some clod deleted the selection while we were in the midst of | |
d9c0d4a3 GM |
1353 | reading it. Deal with that, I guess.... */ |
1354 | if (result != Success) | |
1355 | break; | |
e22cf39c | 1356 | |
864d7ce7 | 1357 | bytes_per_item = *actual_format_ret >> 3; |
a54e2c05 | 1358 | eassert (*actual_size_ret <= buffer_size / bytes_per_item); |
864d7ce7 | 1359 | |
e22cf39c JD |
1360 | /* The man page for XGetWindowProperty says: |
1361 | "If the returned format is 32, the returned data is represented | |
1362 | as a long array and should be cast to that type to obtain the | |
1363 | elements." | |
1364 | This applies even if long is more than 32 bits, the X library | |
1365 | converts from 32 bit elements received from the X server to long | |
72af86bd | 1366 | and passes the long array to us. Thus, for that case memcpy can not |
e22cf39c JD |
1367 | be used. We convert to a 32 bit type here, because so much code |
1368 | assume on that. | |
1369 | ||
1370 | The bytes and offsets passed to XGetWindowProperty refers to the | |
1371 | property and those are indeed in 32 bit quantities if format is 32. */ | |
1372 | ||
864d7ce7 PE |
1373 | bytes_gotten = *actual_size_ret; |
1374 | bytes_gotten *= bytes_per_item; | |
1375 | ||
1376 | TRACE2 ("Read %"pD"d bytes from property %s", | |
1377 | bytes_gotten, XGetAtomName (display, property)); | |
1378 | ||
1379 | if (total_size - offset < bytes_gotten) | |
1380 | { | |
1381 | unsigned char *data1; | |
1382 | ptrdiff_t remaining_lim = total_size_max - offset - bytes_gotten; | |
1383 | if (remaining_lim < 0 || remaining_lim < bytes_remaining) | |
1384 | goto size_overflow; | |
1385 | total_size = offset + bytes_gotten + bytes_remaining; | |
1386 | data1 = realloc (data, total_size + 1); | |
1387 | if (! data1) | |
1388 | goto memory_exhausted; | |
1389 | data = data1; | |
1390 | } | |
1391 | ||
2172544b | 1392 | if (32 < BITS_PER_LONG && *actual_format_ret == 32) |
e22cf39c JD |
1393 | { |
1394 | unsigned long i; | |
864d7ce7 | 1395 | int *idata = (int *) (data + offset); |
e22cf39c JD |
1396 | long *ldata = (long *) tmp_data; |
1397 | ||
1398 | for (i = 0; i < *actual_size_ret; ++i) | |
864d7ce7 | 1399 | idata[i] = ldata[i]; |
e22cf39c JD |
1400 | } |
1401 | else | |
864d7ce7 PE |
1402 | memcpy (data + offset, tmp_data, bytes_gotten); |
1403 | ||
1404 | offset += bytes_gotten; | |
1b65481e | 1405 | |
0158abbc | 1406 | /* This was allocated by Xlib, so use XFree. */ |
98c6f1e3 | 1407 | XFree (tmp_data); |
ede4db72 | 1408 | } |
2f65feb6 | 1409 | |
5c3a351a | 1410 | XFlush (display); |
864d7ce7 PE |
1411 | data[offset] = '\0'; |
1412 | ||
1413 | done: | |
ede4db72 | 1414 | UNBLOCK_INPUT; |
864d7ce7 | 1415 | *data_ret = data; |
ede4db72 | 1416 | *bytes_ret = offset; |
864d7ce7 PE |
1417 | return; |
1418 | ||
1419 | size_overflow: | |
1420 | free (data); | |
1421 | UNBLOCK_INPUT; | |
1422 | memory_full (SIZE_MAX); | |
1423 | ||
1424 | memory_exhausted: | |
1425 | free (data); | |
1426 | UNBLOCK_INPUT; | |
1427 | memory_full (total_size + 1); | |
ede4db72 RS |
1428 | } |
1429 | \f | |
4feb31b2 | 1430 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1431 | |
ede4db72 | 1432 | static void |
d5a3eaaf AS |
1433 | receive_incremental_selection (Display *display, Window window, Atom property, |
1434 | Lisp_Object target_type, | |
1435 | unsigned int min_size_bytes, | |
864d7ce7 PE |
1436 | unsigned char **data_ret, |
1437 | ptrdiff_t *size_bytes_ret, | |
d5a3eaaf AS |
1438 | Atom *type_ret, int *format_ret, |
1439 | unsigned long *size_ret) | |
ede4db72 | 1440 | { |
864d7ce7 | 1441 | ptrdiff_t offset = 0; |
d1f21a66 | 1442 | struct prop_location *wait_object; |
864d7ce7 PE |
1443 | if (min (PTRDIFF_MAX, SIZE_MAX) < min_size_bytes) |
1444 | memory_full (SIZE_MAX); | |
23f86fce | 1445 | *data_ret = xmalloc (min_size_bytes); |
ede4db72 | 1446 | *size_bytes_ret = min_size_bytes; |
d9c0d4a3 | 1447 | |
864d7ce7 | 1448 | TRACE1 ("Read %u bytes incrementally", min_size_bytes); |
2f65feb6 RS |
1449 | |
1450 | /* At this point, we have read an INCR property. | |
1451 | Delete the property to ack it. | |
1452 | (But first, prepare to receive the next event in this handshake.) | |
ede4db72 RS |
1453 | |
1454 | Now, we must loop, waiting for the sending window to put a value on | |
1455 | that property, then reading the property, then deleting it to ack. | |
1456 | We are done when the sender places a property of length 0. | |
1457 | */ | |
2f65feb6 RS |
1458 | BLOCK_INPUT; |
1459 | XSelectInput (display, window, STANDARD_EVENT_SET | PropertyChangeMask); | |
d9c0d4a3 | 1460 | TRACE1 (" Delete property %s", |
dd0fe424 | 1461 | SDATA (SYMBOL_NAME (x_atom_to_symbol (display, property)))); |
2f65feb6 | 1462 | XDeleteProperty (display, window, property); |
d9c0d4a3 | 1463 | TRACE1 (" Expect new value of property %s", |
dd0fe424 | 1464 | SDATA (SYMBOL_NAME (x_atom_to_symbol (display, property)))); |
d1f21a66 RS |
1465 | wait_object = expect_property_change (display, window, property, |
1466 | PropertyNewValue); | |
5c3a351a | 1467 | XFlush (display); |
2f65feb6 RS |
1468 | UNBLOCK_INPUT; |
1469 | ||
ede4db72 RS |
1470 | while (1) |
1471 | { | |
1472 | unsigned char *tmp_data; | |
864d7ce7 | 1473 | ptrdiff_t tmp_size_bytes; |
d9c0d4a3 GM |
1474 | |
1475 | TRACE0 (" Wait for property change"); | |
d1f21a66 | 1476 | wait_for_property_change (wait_object); |
1b65481e | 1477 | |
ede4db72 | 1478 | /* expect it again immediately, because x_get_window_property may |
2a1a4c9d | 1479 | .. no it won't, I don't get it. |
d9c0d4a3 GM |
1480 | .. Ok, I get it now, the Xt code that implements INCR is broken. */ |
1481 | TRACE0 (" Get property value"); | |
ede4db72 RS |
1482 | x_get_window_property (display, window, property, |
1483 | &tmp_data, &tmp_size_bytes, | |
1484 | type_ret, format_ret, size_ret, 1); | |
1485 | ||
864d7ce7 | 1486 | TRACE1 (" Read increment of %"pD"d bytes", tmp_size_bytes); |
d9c0d4a3 | 1487 | |
ede4db72 RS |
1488 | if (tmp_size_bytes == 0) /* we're done */ |
1489 | { | |
d9c0d4a3 GM |
1490 | TRACE0 ("Done reading incrementally"); |
1491 | ||
2f65feb6 RS |
1492 | if (! waiting_for_other_props_on_window (display, window)) |
1493 | XSelectInput (display, window, STANDARD_EVENT_SET); | |
4feb31b2 | 1494 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1495 | calls xmalloc itself. */ |
70fdbb46 | 1496 | xfree (tmp_data); |
ede4db72 RS |
1497 | break; |
1498 | } | |
2f65feb6 RS |
1499 | |
1500 | BLOCK_INPUT; | |
d9c0d4a3 GM |
1501 | TRACE1 (" ACK by deleting property %s", |
1502 | XGetAtomName (display, property)); | |
2f65feb6 | 1503 | XDeleteProperty (display, window, property); |
d1f21a66 RS |
1504 | wait_object = expect_property_change (display, window, property, |
1505 | PropertyNewValue); | |
5c3a351a | 1506 | XFlush (display); |
2f65feb6 RS |
1507 | UNBLOCK_INPUT; |
1508 | ||
864d7ce7 | 1509 | if (*size_bytes_ret - offset < tmp_size_bytes) |
0065d054 PE |
1510 | *data_ret = xpalloc (*data_ret, size_bytes_ret, |
1511 | tmp_size_bytes - (*size_bytes_ret - offset), | |
1512 | -1, 1); | |
1b65481e | 1513 | |
72af86bd | 1514 | memcpy ((*data_ret) + offset, tmp_data, tmp_size_bytes); |
ede4db72 | 1515 | offset += tmp_size_bytes; |
1b65481e | 1516 | |
4feb31b2 | 1517 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1518 | calls xmalloc itself. */ |
4feb31b2 | 1519 | xfree (tmp_data); |
ede4db72 RS |
1520 | } |
1521 | } | |
d9c0d4a3 | 1522 | |
ede4db72 | 1523 | \f |
e067f0c1 CY |
1524 | /* Fetch a value from property PROPERTY of X window WINDOW on display |
1525 | DISPLAY. TARGET_TYPE and SELECTION_ATOM are used in error message | |
1526 | if this fails. */ | |
ede4db72 RS |
1527 | |
1528 | static Lisp_Object | |
d5a3eaaf AS |
1529 | x_get_window_property_as_lisp_data (Display *display, Window window, |
1530 | Atom property, | |
1531 | Lisp_Object target_type, | |
1532 | Atom selection_atom) | |
ede4db72 RS |
1533 | { |
1534 | Atom actual_type; | |
1535 | int actual_format; | |
1536 | unsigned long actual_size; | |
1537 | unsigned char *data = 0; | |
864d7ce7 | 1538 | ptrdiff_t bytes = 0; |
ede4db72 | 1539 | Lisp_Object val; |
5c3a351a | 1540 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1541 | |
d9c0d4a3 GM |
1542 | TRACE0 ("Reading selection data"); |
1543 | ||
ede4db72 RS |
1544 | x_get_window_property (display, window, property, &data, &bytes, |
1545 | &actual_type, &actual_format, &actual_size, 1); | |
1546 | if (! data) | |
1547 | { | |
1548 | int there_is_a_selection_owner; | |
1549 | BLOCK_INPUT; | |
1550 | there_is_a_selection_owner | |
1551 | = XGetSelectionOwner (display, selection_atom); | |
1552 | UNBLOCK_INPUT; | |
4d30ce50 KS |
1553 | if (there_is_a_selection_owner) |
1554 | signal_error ("Selection owner couldn't convert", | |
1555 | actual_type | |
1556 | ? list2 (target_type, | |
1557 | x_atom_to_symbol (display, actual_type)) | |
1558 | : target_type); | |
1559 | else | |
1560 | signal_error ("No selection", | |
1561 | x_atom_to_symbol (display, selection_atom)); | |
ede4db72 | 1562 | } |
1b65481e | 1563 | |
5c3a351a | 1564 | if (actual_type == dpyinfo->Xatom_INCR) |
ede4db72 RS |
1565 | { |
1566 | /* That wasn't really the data, just the beginning. */ | |
1567 | ||
1568 | unsigned int min_size_bytes = * ((unsigned int *) data); | |
1569 | BLOCK_INPUT; | |
4feb31b2 | 1570 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1571 | calls xmalloc itself. */ |
98c6f1e3 | 1572 | xfree (data); |
ede4db72 RS |
1573 | UNBLOCK_INPUT; |
1574 | receive_incremental_selection (display, window, property, target_type, | |
1575 | min_size_bytes, &data, &bytes, | |
1576 | &actual_type, &actual_format, | |
1577 | &actual_size); | |
1578 | } | |
1579 | ||
2f65feb6 | 1580 | BLOCK_INPUT; |
d9c0d4a3 | 1581 | TRACE1 (" Delete property %s", XGetAtomName (display, property)); |
2f65feb6 | 1582 | XDeleteProperty (display, window, property); |
5c3a351a | 1583 | XFlush (display); |
2f65feb6 RS |
1584 | UNBLOCK_INPUT; |
1585 | ||
ede4db72 RS |
1586 | /* It's been read. Now convert it to a lisp object in some semi-rational |
1587 | manner. */ | |
1588 | val = selection_data_to_lisp_data (display, data, bytes, | |
1589 | actual_type, actual_format); | |
1b65481e | 1590 | |
4feb31b2 | 1591 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1592 | calls xmalloc itself. */ |
98c6f1e3 | 1593 | xfree (data); |
ede4db72 RS |
1594 | return val; |
1595 | } | |
1596 | \f | |
1597 | /* These functions convert from the selection data read from the server into | |
1598 | something that we can use from Lisp, and vice versa. | |
1599 | ||
1600 | Type: Format: Size: Lisp Type: | |
1601 | ----- ------- ----- ----------- | |
1602 | * 8 * String | |
1603 | ATOM 32 1 Symbol | |
1604 | ATOM 32 > 1 Vector of Symbols | |
1605 | * 16 1 Integer | |
1606 | * 16 > 1 Vector of Integers | |
1607 | * 32 1 if <=16 bits: Integer | |
1608 | if > 16 bits: Cons of top16, bot16 | |
1609 | * 32 > 1 Vector of the above | |
1610 | ||
1611 | When converting a Lisp number to C, it is assumed to be of format 16 if | |
1612 | it is an integer, and of format 32 if it is a cons of two integers. | |
1613 | ||
1614 | When converting a vector of numbers from Lisp to C, it is assumed to be | |
1615 | of format 16 if every element in the vector is an integer, and is assumed | |
1616 | to be of format 32 if any element is a cons of two integers. | |
1617 | ||
1618 | When converting an object to C, it may be of the form (SYMBOL . <data>) | |
1619 | where SYMBOL is what we should claim that the type is. Format and | |
b8d6f4af JD |
1620 | representation are as above. |
1621 | ||
1622 | Important: When format is 32, data should contain an array of int, | |
1623 | not an array of long as the X library returns. This makes a difference | |
1624 | when sizeof(long) != sizeof(int). */ | |
ede4db72 RS |
1625 | |
1626 | ||
1627 | ||
1628 | static Lisp_Object | |
eec47d6b | 1629 | selection_data_to_lisp_data (Display *display, const unsigned char *data, |
864d7ce7 | 1630 | ptrdiff_t size, Atom type, int format) |
ede4db72 | 1631 | { |
5c3a351a | 1632 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1633 | |
5c3a351a | 1634 | if (type == dpyinfo->Xatom_NULL) |
ede4db72 RS |
1635 | return QNULL; |
1636 | ||
1637 | /* Convert any 8-bit data to a string, for compactness. */ | |
1638 | else if (format == 8) | |
e6c7c988 | 1639 | { |
e57ad4d8 KH |
1640 | Lisp_Object str, lispy_type; |
1641 | ||
1642 | str = make_unibyte_string ((char *) data, size); | |
1643 | /* Indicate that this string is from foreign selection by a text | |
1644 | property `foreign-selection' so that the caller of | |
1645 | x-get-selection-internal (usually x-get-selection) can know | |
1646 | that the string must be decode. */ | |
1647 | if (type == dpyinfo->Xatom_COMPOUND_TEXT) | |
1648 | lispy_type = QCOMPOUND_TEXT; | |
1649 | else if (type == dpyinfo->Xatom_UTF8_STRING) | |
1650 | lispy_type = QUTF8_STRING; | |
e6c7c988 | 1651 | else |
e57ad4d8 KH |
1652 | lispy_type = QSTRING; |
1653 | Fput_text_property (make_number (0), make_number (size), | |
1654 | Qforeign_selection, lispy_type, str); | |
e6c7c988 KH |
1655 | return str; |
1656 | } | |
ede4db72 | 1657 | /* Convert a single atom to a Lisp_Symbol. Convert a set of atoms to |
e067f0c1 CY |
1658 | a vector of symbols. */ |
1659 | else if (type == XA_ATOM | |
1660 | /* Treat ATOM_PAIR type similar to list of atoms. */ | |
1661 | || type == dpyinfo->Xatom_ATOM_PAIR) | |
ede4db72 | 1662 | { |
864d7ce7 | 1663 | ptrdiff_t i; |
b8d6f4af JD |
1664 | /* On a 64 bit machine sizeof(Atom) == sizeof(long) == 8. |
1665 | But the callers of these function has made sure the data for | |
1666 | format == 32 is an array of int. Thus, use int instead | |
1667 | of Atom. */ | |
1668 | int *idata = (int *) data; | |
1669 | ||
1670 | if (size == sizeof (int)) | |
1671 | return x_atom_to_symbol (display, (Atom) idata[0]); | |
ede4db72 RS |
1672 | else |
1673 | { | |
b8d6f4af | 1674 | Lisp_Object v = Fmake_vector (make_number (size / sizeof (int)), |
e607a484 | 1675 | make_number (0)); |
b8d6f4af | 1676 | for (i = 0; i < size / sizeof (int); i++) |
e607a484 | 1677 | Faset (v, make_number (i), |
b8d6f4af | 1678 | x_atom_to_symbol (display, (Atom) idata[i])); |
ede4db72 RS |
1679 | return v; |
1680 | } | |
1681 | } | |
1682 | ||
1ad08acd RS |
1683 | /* Convert a single 16-bit number or a small 32-bit number to a Lisp_Int. |
1684 | If the number is 32 bits and won't fit in a Lisp_Int, | |
1685 | convert it to a cons of integers, 16 bits in each half. | |
ede4db72 | 1686 | */ |
2f51feb8 | 1687 | else if (format == 32 && size == sizeof (int)) |
d2eea5b5 | 1688 | return INTEGER_TO_CONS (((int *) data) [0]); |
ede4db72 | 1689 | else if (format == 16 && size == sizeof (short)) |
d2eea5b5 | 1690 | return make_number (((short *) data) [0]); |
ede4db72 RS |
1691 | |
1692 | /* Convert any other kind of data to a vector of numbers, represented | |
1693 | as above (as an integer, or a cons of two 16 bit integers.) | |
1694 | */ | |
1695 | else if (format == 16) | |
1696 | { | |
864d7ce7 | 1697 | ptrdiff_t i; |
937a3875 RS |
1698 | Lisp_Object v; |
1699 | v = Fmake_vector (make_number (size / 2), make_number (0)); | |
1700 | for (i = 0; i < size / 2; i++) | |
ede4db72 | 1701 | { |
d311d28c | 1702 | short j = ((short *) data) [i]; |
e607a484 | 1703 | Faset (v, make_number (i), make_number (j)); |
ede4db72 RS |
1704 | } |
1705 | return v; | |
1706 | } | |
1707 | else | |
1708 | { | |
864d7ce7 PE |
1709 | ptrdiff_t i; |
1710 | Lisp_Object v = Fmake_vector (make_number (size / X_LONG_SIZE), | |
1711 | make_number (0)); | |
1712 | for (i = 0; i < size / X_LONG_SIZE; i++) | |
ede4db72 | 1713 | { |
d2eea5b5 | 1714 | int j = ((int *) data) [i]; |
be44ca6c | 1715 | Faset (v, make_number (i), INTEGER_TO_CONS (j)); |
ede4db72 RS |
1716 | } |
1717 | return v; | |
1718 | } | |
1719 | } | |
1720 | ||
2e621251 PE |
1721 | /* Convert OBJ to an X long value, and return it as unsigned long. |
1722 | OBJ should be an integer or a cons representing an integer. | |
1723 | Treat values in the range X_LONG_MAX + 1 .. X_ULONG_MAX as X | |
1724 | unsigned long values: in theory these values are supposed to be | |
1725 | signed but in practice unsigned 32-bit data are communicated via X | |
1726 | selections and we need to support that. */ | |
1727 | static unsigned long | |
1728 | cons_to_x_long (Lisp_Object obj) | |
1729 | { | |
1730 | if (X_ULONG_MAX <= INTMAX_MAX | |
1731 | || XINT (INTEGERP (obj) ? obj : XCAR (obj)) < 0) | |
1732 | return cons_to_signed (obj, X_LONG_MIN, min (X_ULONG_MAX, INTMAX_MAX)); | |
1733 | else | |
1734 | return cons_to_unsigned (obj, X_ULONG_MAX); | |
1735 | } | |
ede4db72 | 1736 | |
4feb31b2 | 1737 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1738 | |
ede4db72 | 1739 | static void |
d5a3eaaf AS |
1740 | lisp_data_to_selection_data (Display *display, Lisp_Object obj, |
1741 | unsigned char **data_ret, Atom *type_ret, | |
864d7ce7 | 1742 | ptrdiff_t *size_ret, |
d5a3eaaf | 1743 | int *format_ret, int *nofree_ret) |
ede4db72 RS |
1744 | { |
1745 | Lisp_Object type = Qnil; | |
5c3a351a | 1746 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
aca39f42 RS |
1747 | |
1748 | *nofree_ret = 0; | |
1749 | ||
8e713be6 | 1750 | if (CONSP (obj) && SYMBOLP (XCAR (obj))) |
ede4db72 | 1751 | { |
8e713be6 KR |
1752 | type = XCAR (obj); |
1753 | obj = XCDR (obj); | |
1754 | if (CONSP (obj) && NILP (XCDR (obj))) | |
1755 | obj = XCAR (obj); | |
ede4db72 RS |
1756 | } |
1757 | ||
1758 | if (EQ (obj, QNULL) || (EQ (type, QNULL))) | |
1759 | { /* This is not the same as declining */ | |
1760 | *format_ret = 32; | |
1761 | *size_ret = 0; | |
1762 | *data_ret = 0; | |
1763 | type = QNULL; | |
1764 | } | |
1765 | else if (STRINGP (obj)) | |
1766 | { | |
1bd70c6e KH |
1767 | if (SCHARS (obj) < SBYTES (obj)) |
1768 | /* OBJ is a multibyte string containing a non-ASCII char. */ | |
4d30ce50 | 1769 | signal_error ("Non-ASCII string must be encoded in advance", obj); |
7b9ae523 | 1770 | if (NILP (type)) |
5109c8dd KH |
1771 | type = QSTRING; |
1772 | *format_ret = 8; | |
1773 | *size_ret = SBYTES (obj); | |
1774 | *data_ret = SDATA (obj); | |
1775 | *nofree_ret = 1; | |
ede4db72 RS |
1776 | } |
1777 | else if (SYMBOLP (obj)) | |
1778 | { | |
38182d90 PE |
1779 | void *data = xmalloc (sizeof (Atom) + 1); |
1780 | Atom *x_atom_ptr = data; | |
1781 | *data_ret = data; | |
ede4db72 RS |
1782 | *format_ret = 32; |
1783 | *size_ret = 1; | |
ede4db72 | 1784 | (*data_ret) [sizeof (Atom)] = 0; |
38182d90 | 1785 | *x_atom_ptr = symbol_to_x_atom (dpyinfo, obj); |
ede4db72 RS |
1786 | if (NILP (type)) type = QATOM; |
1787 | } | |
252c5ee1 | 1788 | else if (RANGED_INTEGERP (X_SHRT_MIN, obj, X_SHRT_MAX)) |
ede4db72 | 1789 | { |
38182d90 PE |
1790 | void *data = xmalloc (sizeof (short) + 1); |
1791 | short *short_ptr = data; | |
1792 | *data_ret = data; | |
ede4db72 RS |
1793 | *format_ret = 16; |
1794 | *size_ret = 1; | |
ede4db72 | 1795 | (*data_ret) [sizeof (short)] = 0; |
38182d90 | 1796 | *short_ptr = XINT (obj); |
ede4db72 RS |
1797 | if (NILP (type)) type = QINTEGER; |
1798 | } | |
a87ed99c | 1799 | else if (INTEGERP (obj) |
8e713be6 KR |
1800 | || (CONSP (obj) && INTEGERP (XCAR (obj)) |
1801 | && (INTEGERP (XCDR (obj)) | |
1802 | || (CONSP (XCDR (obj)) | |
1803 | && INTEGERP (XCAR (XCDR (obj))))))) | |
ede4db72 | 1804 | { |
38182d90 PE |
1805 | void *data = xmalloc (sizeof (unsigned long) + 1); |
1806 | unsigned long *x_long_ptr = data; | |
1807 | *data_ret = data; | |
ede4db72 RS |
1808 | *format_ret = 32; |
1809 | *size_ret = 1; | |
2e621251 | 1810 | (*data_ret) [sizeof (unsigned long)] = 0; |
38182d90 | 1811 | *x_long_ptr = cons_to_x_long (obj); |
ede4db72 RS |
1812 | if (NILP (type)) type = QINTEGER; |
1813 | } | |
1814 | else if (VECTORP (obj)) | |
1815 | { | |
1816 | /* Lisp_Vectors may represent a set of ATOMs; | |
1817 | a set of 16 or 32 bit INTEGERs; | |
1818 | or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...] | |
1819 | */ | |
864d7ce7 PE |
1820 | ptrdiff_t i; |
1821 | ptrdiff_t size = ASIZE (obj); | |
ede4db72 | 1822 | |
28be1ada | 1823 | if (SYMBOLP (AREF (obj, 0))) |
ede4db72 RS |
1824 | /* This vector is an ATOM set */ |
1825 | { | |
38182d90 PE |
1826 | void *data; |
1827 | Atom *x_atoms; | |
ede4db72 | 1828 | if (NILP (type)) type = QATOM; |
864d7ce7 | 1829 | for (i = 0; i < size; i++) |
28be1ada | 1830 | if (!SYMBOLP (AREF (obj, i))) |
4d30ce50 | 1831 | signal_error ("All elements of selection vector must have same type", obj); |
1b65481e | 1832 | |
38182d90 PE |
1833 | *data_ret = data = xnmalloc (size, sizeof *x_atoms); |
1834 | x_atoms = data; | |
864d7ce7 PE |
1835 | *format_ret = 32; |
1836 | *size_ret = size; | |
1837 | for (i = 0; i < size; i++) | |
38182d90 | 1838 | x_atoms[i] = symbol_to_x_atom (dpyinfo, AREF (obj, i)); |
ede4db72 | 1839 | } |
ede4db72 RS |
1840 | else |
1841 | /* This vector is an INTEGER set, or something like it */ | |
1842 | { | |
864d7ce7 | 1843 | int format = 16; |
0065d054 | 1844 | int data_size = sizeof (short); |
38182d90 PE |
1845 | void *data; |
1846 | unsigned long *x_atoms; | |
1847 | short *shorts; | |
ede4db72 | 1848 | if (NILP (type)) type = QINTEGER; |
864d7ce7 | 1849 | for (i = 0; i < size; i++) |
252c5ee1 | 1850 | { |
28be1ada | 1851 | if (! RANGED_INTEGERP (X_SHRT_MIN, AREF (obj, i), |
2e621251 | 1852 | X_SHRT_MAX)) |
252c5ee1 PE |
1853 | { |
1854 | /* Use sizeof (long) even if it is more than 32 bits. | |
1855 | See comment in x_get_window_property and | |
1856 | x_fill_property_data. */ | |
1857 | data_size = sizeof (long); | |
1858 | format = 32; | |
2e621251 | 1859 | break; |
252c5ee1 PE |
1860 | } |
1861 | } | |
38182d90 PE |
1862 | *data_ret = data = xnmalloc (size, data_size); |
1863 | x_atoms = data; | |
1864 | shorts = data; | |
864d7ce7 PE |
1865 | *format_ret = format; |
1866 | *size_ret = size; | |
1867 | for (i = 0; i < size; i++) | |
252c5ee1 | 1868 | { |
252c5ee1 | 1869 | if (format == 32) |
38182d90 | 1870 | x_atoms[i] = cons_to_x_long (AREF (obj, i)); |
252c5ee1 | 1871 | else |
38182d90 | 1872 | shorts[i] = XINT (AREF (obj, i)); |
252c5ee1 | 1873 | } |
ede4db72 RS |
1874 | } |
1875 | } | |
1876 | else | |
4d30ce50 | 1877 | signal_error (/* Qselection_error */ "Unrecognized selection data", obj); |
ede4db72 | 1878 | |
a9f737ee | 1879 | *type_ret = symbol_to_x_atom (dpyinfo, type); |
ede4db72 RS |
1880 | } |
1881 | ||
1882 | static Lisp_Object | |
971de7fb | 1883 | clean_local_selection_data (Lisp_Object obj) |
ede4db72 RS |
1884 | { |
1885 | if (CONSP (obj) | |
8e713be6 KR |
1886 | && INTEGERP (XCAR (obj)) |
1887 | && CONSP (XCDR (obj)) | |
1888 | && INTEGERP (XCAR (XCDR (obj))) | |
1889 | && NILP (XCDR (XCDR (obj)))) | |
1890 | obj = Fcons (XCAR (obj), XCDR (obj)); | |
ede4db72 RS |
1891 | |
1892 | if (CONSP (obj) | |
8e713be6 KR |
1893 | && INTEGERP (XCAR (obj)) |
1894 | && INTEGERP (XCDR (obj))) | |
ede4db72 | 1895 | { |
8e713be6 KR |
1896 | if (XINT (XCAR (obj)) == 0) |
1897 | return XCDR (obj); | |
1898 | if (XINT (XCAR (obj)) == -1) | |
1899 | return make_number (- XINT (XCDR (obj))); | |
ede4db72 RS |
1900 | } |
1901 | if (VECTORP (obj)) | |
1902 | { | |
864d7ce7 PE |
1903 | ptrdiff_t i; |
1904 | ptrdiff_t size = ASIZE (obj); | |
ede4db72 RS |
1905 | Lisp_Object copy; |
1906 | if (size == 1) | |
28be1ada | 1907 | return clean_local_selection_data (AREF (obj, 0)); |
e607a484 | 1908 | copy = Fmake_vector (make_number (size), Qnil); |
ede4db72 | 1909 | for (i = 0; i < size; i++) |
28be1ada | 1910 | ASET (copy, i, clean_local_selection_data (AREF (obj, i))); |
ede4db72 RS |
1911 | return copy; |
1912 | } | |
1913 | return obj; | |
1914 | } | |
1915 | \f | |
1916 | /* Called from XTread_socket to handle SelectionNotify events. | |
606140dd KH |
1917 | If it's the selection we are waiting for, stop waiting |
1918 | by setting the car of reading_selection_reply to non-nil. | |
1919 | We store t there if the reply is successful, lambda if not. */ | |
ede4db72 RS |
1920 | |
1921 | void | |
971de7fb | 1922 | x_handle_selection_notify (XSelectionEvent *event) |
ede4db72 | 1923 | { |
5d0ba25b | 1924 | if (event->requestor != reading_selection_window) |
ede4db72 RS |
1925 | return; |
1926 | if (event->selection != reading_which_selection) | |
1927 | return; | |
1928 | ||
d9c0d4a3 | 1929 | TRACE0 ("Received SelectionNotify"); |
f3fbd155 KR |
1930 | XSETCAR (reading_selection_reply, |
1931 | (event->property != 0 ? Qt : Qlambda)); | |
ede4db72 RS |
1932 | } |
1933 | ||
1934 | \f | |
a9f737ee CY |
1935 | /* From a Lisp_Object, return a suitable frame for selection |
1936 | operations. OBJECT may be a frame, a terminal object, or nil | |
1937 | (which stands for the selected frame--or, if that is not an X | |
1938 | frame, the first X display on the list). If no suitable frame can | |
1939 | be found, return NULL. */ | |
1940 | ||
1941 | static struct frame * | |
1942 | frame_for_x_selection (Lisp_Object object) | |
1943 | { | |
fb1ac845 | 1944 | Lisp_Object tail; |
a9f737ee CY |
1945 | struct frame *f; |
1946 | ||
1947 | if (NILP (object)) | |
1948 | { | |
1949 | f = XFRAME (selected_frame); | |
1950 | if (FRAME_X_P (f) && FRAME_LIVE_P (f)) | |
1951 | return f; | |
1952 | ||
1953 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
1954 | { | |
1955 | f = XFRAME (XCAR (tail)); | |
1956 | if (FRAME_X_P (f) && FRAME_LIVE_P (f)) | |
1957 | return f; | |
1958 | } | |
1959 | } | |
1960 | else if (TERMINALP (object)) | |
1961 | { | |
1962 | struct terminal *t = get_terminal (object, 1); | |
1963 | if (t->type == output_x_window) | |
1964 | { | |
1965 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
1966 | { | |
1967 | f = XFRAME (XCAR (tail)); | |
1968 | if (FRAME_LIVE_P (f) && f->terminal == t) | |
1969 | return f; | |
1970 | } | |
1971 | } | |
1972 | } | |
1973 | else if (FRAMEP (object)) | |
1974 | { | |
1975 | f = XFRAME (object); | |
1976 | if (FRAME_X_P (f) && FRAME_LIVE_P (f)) | |
1977 | return f; | |
1978 | } | |
1979 | ||
1980 | return NULL; | |
1981 | } | |
1982 | ||
1983 | ||
a0d76c27 | 1984 | DEFUN ("x-own-selection-internal", Fx_own_selection_internal, |
a9f737ee | 1985 | Sx_own_selection_internal, 2, 3, 0, |
abb71cf4 CY |
1986 | doc: /* Assert an X selection of type SELECTION and value VALUE. |
1987 | SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. | |
8c1a1077 PJ |
1988 | \(Those are literal upper-case symbol names, since that's what X expects.) |
1989 | VALUE is typically a string, or a cons of two markers, but may be | |
a9f737ee CY |
1990 | anything that the functions on `selection-converter-alist' know about. |
1991 | ||
1992 | FRAME should be a frame that should own the selection. If omitted or | |
bd7da63e GM |
1993 | nil, it defaults to the selected frame. |
1994 | ||
1995 | On Nextstep, FRAME is unused. */) | |
a9f737ee | 1996 | (Lisp_Object selection, Lisp_Object value, Lisp_Object frame) |
ede4db72 | 1997 | { |
a9f737ee CY |
1998 | if (NILP (frame)) frame = selected_frame; |
1999 | if (!FRAME_LIVE_P (XFRAME (frame)) || !FRAME_X_P (XFRAME (frame))) | |
2000 | error ("X selection unavailable for this frame"); | |
2001 | ||
abb71cf4 CY |
2002 | CHECK_SYMBOL (selection); |
2003 | if (NILP (value)) error ("VALUE may not be nil"); | |
a9f737ee | 2004 | x_own_selection (selection, value, frame); |
abb71cf4 | 2005 | return value; |
ede4db72 RS |
2006 | } |
2007 | ||
2008 | ||
2009 | /* Request the selection value from the owner. If we are the owner, | |
2010 | simply return our selection value. If we are not the owner, this | |
2011 | will block until all of the data has arrived. */ | |
2012 | ||
a0d76c27 | 2013 | DEFUN ("x-get-selection-internal", Fx_get_selection_internal, |
a9f737ee | 2014 | Sx_get_selection_internal, 2, 4, 0, |
8c1a1077 | 2015 | doc: /* Return text selected from some X window. |
bd7da63e | 2016 | SELECTION-SYMBOL is typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. |
8c1a1077 | 2017 | \(Those are literal upper-case symbol names, since that's what X expects.) |
bd7da63e GM |
2018 | TARGET-TYPE is the type of data desired, typically `STRING'. |
2019 | ||
2020 | TIME-STAMP is the time to use in the XConvertSelection call for foreign | |
a9f737ee CY |
2021 | selections. If omitted, defaults to the time for the last event. |
2022 | ||
2023 | TERMINAL should be a terminal object or a frame specifying the X | |
2024 | server to query. If omitted or nil, that stands for the selected | |
bd7da63e GM |
2025 | frame's display, or the first available X display. |
2026 | ||
2027 | On Nextstep, TIME-STAMP and TERMINAL are unused. */) | |
a9f737ee CY |
2028 | (Lisp_Object selection_symbol, Lisp_Object target_type, |
2029 | Lisp_Object time_stamp, Lisp_Object terminal) | |
ede4db72 RS |
2030 | { |
2031 | Lisp_Object val = Qnil; | |
2032 | struct gcpro gcpro1, gcpro2; | |
a9f737ee | 2033 | struct frame *f = frame_for_x_selection (terminal); |
ede4db72 | 2034 | GCPRO2 (target_type, val); /* we store newly consed data into these */ |
a9f737ee | 2035 | |
b7826503 | 2036 | CHECK_SYMBOL (selection_symbol); |
a9f737ee CY |
2037 | CHECK_SYMBOL (target_type); |
2038 | if (EQ (target_type, QMULTIPLE)) | |
2039 | error ("Retrieving MULTIPLE selections is currently unimplemented"); | |
2040 | if (!f) | |
2041 | error ("X selection unavailable for this frame"); | |
2042 | ||
2043 | val = x_get_local_selection (selection_symbol, target_type, 1, | |
2044 | FRAME_X_DISPLAY_INFO (f)); | |
ede4db72 | 2045 | |
a9f737ee | 2046 | if (NILP (val) && FRAME_LIVE_P (f)) |
ede4db72 | 2047 | { |
a9f737ee CY |
2048 | Lisp_Object frame; |
2049 | XSETFRAME (frame, f); | |
2050 | RETURN_UNGCPRO (x_get_foreign_selection (selection_symbol, target_type, | |
2051 | time_stamp, frame)); | |
ede4db72 | 2052 | } |
ede4db72 | 2053 | |
abb71cf4 | 2054 | if (CONSP (val) && SYMBOLP (XCAR (val))) |
ede4db72 | 2055 | { |
8e713be6 KR |
2056 | val = XCDR (val); |
2057 | if (CONSP (val) && NILP (XCDR (val))) | |
2058 | val = XCAR (val); | |
ede4db72 | 2059 | } |
abb71cf4 | 2060 | RETURN_UNGCPRO (clean_local_selection_data (val)); |
ede4db72 RS |
2061 | } |
2062 | ||
a0d76c27 | 2063 | DEFUN ("x-disown-selection-internal", Fx_disown_selection_internal, |
a9f737ee | 2064 | Sx_disown_selection_internal, 1, 3, 0, |
8c1a1077 | 2065 | doc: /* If we own the selection SELECTION, disown it. |
a9f737ee CY |
2066 | Disowning it means there is no such selection. |
2067 | ||
bd7da63e GM |
2068 | Sets the last-change time for the selection to TIME-OBJECT (by default |
2069 | the time of the last event). | |
2070 | ||
a9f737ee CY |
2071 | TERMINAL should be a terminal object or a frame specifying the X |
2072 | server to query. If omitted or nil, that stands for the selected | |
bd7da63e GM |
2073 | frame's display, or the first available X display. |
2074 | ||
2075 | On Nextstep, the TIME-OBJECT and TERMINAL arguments are unused. | |
2076 | On MS-DOS, all this does is return non-nil if we own the selection. */) | |
a9f737ee | 2077 | (Lisp_Object selection, Lisp_Object time_object, Lisp_Object terminal) |
ede4db72 | 2078 | { |
ede4db72 RS |
2079 | Time timestamp; |
2080 | Atom selection_atom; | |
31df61d6 AS |
2081 | union { |
2082 | struct selection_input_event sie; | |
2083 | struct input_event ie; | |
2084 | } event; | |
a9f737ee | 2085 | struct frame *f = frame_for_x_selection (terminal); |
5c3a351a | 2086 | struct x_display_info *dpyinfo; |
ede4db72 | 2087 | |
a9f737ee | 2088 | if (!f) |
428a555e KL |
2089 | return Qnil; |
2090 | ||
a9f737ee | 2091 | dpyinfo = FRAME_X_DISPLAY_INFO (f); |
b7826503 | 2092 | CHECK_SYMBOL (selection); |
ede4db72 | 2093 | |
a9f737ee CY |
2094 | /* Don't disown the selection when we're not the owner. */ |
2095 | if (NILP (LOCAL_SELECTION (selection, dpyinfo))) | |
2096 | return Qnil; | |
ede4db72 | 2097 | |
a9f737ee | 2098 | selection_atom = symbol_to_x_atom (dpyinfo, selection); |
ede4db72 RS |
2099 | |
2100 | BLOCK_INPUT; | |
be44ca6c PE |
2101 | if (NILP (time_object)) |
2102 | timestamp = last_event_timestamp; | |
2103 | else | |
2104 | CONS_TO_INTEGER (time_object, Time, timestamp); | |
a9f737ee | 2105 | XSetSelectionOwner (dpyinfo->display, selection_atom, None, timestamp); |
ede4db72 RS |
2106 | UNBLOCK_INPUT; |
2107 | ||
eb8c3be9 | 2108 | /* It doesn't seem to be guaranteed that a SelectionClear event will be |
ede4db72 RS |
2109 | generated for a window which owns the selection when that window sets |
2110 | the selection owner to None. The NCD server does, the MIT Sun4 server | |
2111 | doesn't. So we synthesize one; this means we might get two, but | |
2112 | that's ok, because the second one won't have any effect. */ | |
a9f737ee | 2113 | SELECTION_EVENT_DISPLAY (&event.sie) = dpyinfo->display; |
31df61d6 AS |
2114 | SELECTION_EVENT_SELECTION (&event.sie) = selection_atom; |
2115 | SELECTION_EVENT_TIME (&event.sie) = timestamp; | |
2116 | x_handle_selection_clear (&event.ie); | |
ede4db72 RS |
2117 | |
2118 | return Qt; | |
2119 | } | |
2120 | ||
ede4db72 | 2121 | DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p, |
a9f737ee | 2122 | 0, 2, 0, |
8c1a1077 PJ |
2123 | doc: /* Whether the current Emacs process owns the given X Selection. |
2124 | The arg should be the name of the selection in question, typically one of | |
2125 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'. | |
2126 | \(Those are literal upper-case symbol names, since that's what X expects.) | |
2127 | For convenience, the symbol nil is the same as `PRIMARY', | |
a9f737ee CY |
2128 | and t is the same as `SECONDARY'. |
2129 | ||
2130 | TERMINAL should be a terminal object or a frame specifying the X | |
2131 | server to query. If omitted or nil, that stands for the selected | |
bd7da63e GM |
2132 | frame's display, or the first available X display. |
2133 | ||
2134 | On Nextstep, TERMINAL is unused. */) | |
a9f737ee | 2135 | (Lisp_Object selection, Lisp_Object terminal) |
ede4db72 | 2136 | { |
a9f737ee CY |
2137 | struct frame *f = frame_for_x_selection (terminal); |
2138 | ||
b7826503 | 2139 | CHECK_SYMBOL (selection); |
ede4db72 RS |
2140 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
2141 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
1b65481e | 2142 | |
a9f737ee CY |
2143 | if (f && !NILP (LOCAL_SELECTION (selection, FRAME_X_DISPLAY_INFO (f)))) |
2144 | return Qt; | |
2145 | else | |
ede4db72 | 2146 | return Qnil; |
ede4db72 RS |
2147 | } |
2148 | ||
2149 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
a9f737ee CY |
2150 | 0, 2, 0, |
2151 | doc: /* Whether there is an owner for the given X selection. | |
2152 | SELECTION should be the name of the selection in question, typically | |
3c9dfce6 CY |
2153 | one of the symbols `PRIMARY', `SECONDARY', `CLIPBOARD', or |
2154 | `CLIPBOARD_MANAGER' (X expects these literal upper-case names.) The | |
2155 | symbol nil is the same as `PRIMARY', and t is the same as `SECONDARY'. | |
a9f737ee CY |
2156 | |
2157 | TERMINAL should be a terminal object or a frame specifying the X | |
2158 | server to query. If omitted or nil, that stands for the selected | |
bd7da63e GM |
2159 | frame's display, or the first available X display. |
2160 | ||
2161 | On Nextstep, TERMINAL is unused. */) | |
a9f737ee | 2162 | (Lisp_Object selection, Lisp_Object terminal) |
ede4db72 RS |
2163 | { |
2164 | Window owner; | |
356ba514 | 2165 | Atom atom; |
a9f737ee CY |
2166 | struct frame *f = frame_for_x_selection (terminal); |
2167 | struct x_display_info *dpyinfo; | |
b8c70430 | 2168 | |
b7826503 | 2169 | CHECK_SYMBOL (selection); |
356ba514 RS |
2170 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
2171 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
a9f737ee CY |
2172 | |
2173 | if (!f) | |
356ba514 | 2174 | return Qnil; |
a9f737ee CY |
2175 | |
2176 | dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
2177 | ||
2178 | if (!NILP (LOCAL_SELECTION (selection, dpyinfo))) | |
2179 | return Qt; | |
2180 | ||
2181 | atom = symbol_to_x_atom (dpyinfo, selection); | |
2182 | if (atom == 0) return Qnil; | |
ede4db72 | 2183 | BLOCK_INPUT; |
a9f737ee | 2184 | owner = XGetSelectionOwner (dpyinfo->display, atom); |
ede4db72 RS |
2185 | UNBLOCK_INPUT; |
2186 | return (owner ? Qt : Qnil); | |
2187 | } | |
2188 | ||
1dd3c2d9 | 2189 | \f |
4b80f674 CY |
2190 | /* Send clipboard manager a SAVE_TARGETS request with a UTF8_STRING |
2191 | property (http://www.freedesktop.org/wiki/ClipboardManager). */ | |
a9f737ee | 2192 | |
4b80f674 CY |
2193 | static Lisp_Object |
2194 | x_clipboard_manager_save (Lisp_Object frame) | |
a9f737ee CY |
2195 | { |
2196 | struct frame *f = XFRAME (frame); | |
4b80f674 | 2197 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
a9f737ee CY |
2198 | Atom data = dpyinfo->Xatom_UTF8_STRING; |
2199 | ||
2200 | XChangeProperty (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
2201 | dpyinfo->Xatom_EMACS_TMP, | |
2202 | dpyinfo->Xatom_ATOM, 32, PropModeReplace, | |
2203 | (unsigned char *) &data, 1); | |
2204 | x_get_foreign_selection (QCLIPBOARD_MANAGER, QSAVE_TARGETS, | |
2205 | Qnil, frame); | |
4b80f674 CY |
2206 | return Qt; |
2207 | } | |
2208 | ||
2209 | /* Error handler for x_clipboard_manager_save_frame. */ | |
2210 | ||
2211 | static Lisp_Object | |
2212 | x_clipboard_manager_error_1 (Lisp_Object err) | |
2213 | { | |
2214 | Lisp_Object args[2]; | |
2215 | args[0] = build_string ("X clipboard manager error: %s\n\ | |
2216 | If the problem persists, set `x-select-enable-clipboard-manager' to nil."); | |
2217 | args[1] = CAR (CDR (err)); | |
2218 | Fmessage (2, args); | |
2219 | return Qnil; | |
2220 | } | |
2221 | ||
2222 | /* Error handler for x_clipboard_manager_save_all. */ | |
2223 | ||
2224 | static Lisp_Object | |
2225 | x_clipboard_manager_error_2 (Lisp_Object err) | |
2226 | { | |
2227 | fprintf (stderr, "Error saving to X clipboard manager.\n\ | |
2228 | If the problem persists, set `x-select-enable-clipboard-manager' \ | |
2229 | to nil.\n"); | |
2230 | return Qnil; | |
a9f737ee CY |
2231 | } |
2232 | ||
1dd3c2d9 CY |
2233 | /* Called from delete_frame: save any clipboard owned by FRAME to the |
2234 | clipboard manager. Do nothing if FRAME does not own the clipboard, | |
2235 | or if no clipboard manager is present. */ | |
2236 | ||
2237 | void | |
2238 | x_clipboard_manager_save_frame (Lisp_Object frame) | |
a9f737ee | 2239 | { |
1dd3c2d9 CY |
2240 | struct frame *f; |
2241 | ||
4b80f674 CY |
2242 | if (!NILP (Vx_select_enable_clipboard_manager) |
2243 | && FRAMEP (frame) | |
1dd3c2d9 CY |
2244 | && (f = XFRAME (frame), FRAME_X_P (f)) |
2245 | && FRAME_LIVE_P (f)) | |
a9f737ee | 2246 | { |
1dd3c2d9 CY |
2247 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
2248 | Lisp_Object local_selection | |
2249 | = LOCAL_SELECTION (QCLIPBOARD, dpyinfo); | |
2250 | ||
2251 | if (!NILP (local_selection) | |
2252 | && EQ (frame, XCAR (XCDR (XCDR (XCDR (local_selection))))) | |
2253 | && XGetSelectionOwner (dpyinfo->display, | |
2254 | dpyinfo->Xatom_CLIPBOARD_MANAGER)) | |
4b80f674 CY |
2255 | internal_condition_case_1 (x_clipboard_manager_save, frame, Qt, |
2256 | x_clipboard_manager_error_1); | |
a9f737ee | 2257 | } |
1dd3c2d9 CY |
2258 | } |
2259 | ||
2260 | /* Called from Fkill_emacs: save any clipboard owned by FRAME to the | |
2261 | clipboard manager. Do nothing if FRAME does not own the clipboard, | |
2262 | or if no clipboard manager is present. */ | |
2263 | ||
2264 | void | |
2265 | x_clipboard_manager_save_all (void) | |
2266 | { | |
2267 | /* Loop through all X displays, saving owned clipboards. */ | |
2268 | struct x_display_info *dpyinfo; | |
2269 | Lisp_Object local_selection, local_frame; | |
4b80f674 CY |
2270 | |
2271 | if (NILP (Vx_select_enable_clipboard_manager)) | |
2272 | return; | |
2273 | ||
1dd3c2d9 | 2274 | for (dpyinfo = x_display_list; dpyinfo; dpyinfo = dpyinfo->next) |
a9f737ee | 2275 | { |
1dd3c2d9 CY |
2276 | local_selection = LOCAL_SELECTION (QCLIPBOARD, dpyinfo); |
2277 | if (NILP (local_selection) | |
2278 | || !XGetSelectionOwner (dpyinfo->display, | |
2279 | dpyinfo->Xatom_CLIPBOARD_MANAGER)) | |
2280 | continue; | |
a9f737ee | 2281 | |
1dd3c2d9 CY |
2282 | local_frame = XCAR (XCDR (XCDR (XCDR (local_selection)))); |
2283 | if (FRAME_LIVE_P (XFRAME (local_frame))) | |
3c9dfce6 CY |
2284 | { |
2285 | Lisp_Object args[1]; | |
2286 | args[0] = build_string ("Saving clipboard to X clipboard manager..."); | |
2287 | Fmessage (1, args); | |
2288 | ||
2289 | internal_condition_case_1 (x_clipboard_manager_save, local_frame, | |
2290 | Qt, x_clipboard_manager_error_2); | |
2291 | } | |
1dd3c2d9 | 2292 | } |
a9f737ee CY |
2293 | } |
2294 | ||
ede4db72 | 2295 | \f |
1fb3821b JD |
2296 | /*********************************************************************** |
2297 | Drag and drop support | |
2298 | ***********************************************************************/ | |
2299 | /* Check that lisp values are of correct type for x_fill_property_data. | |
2300 | That is, number, string or a cons with two numbers (low and high 16 | |
44f730c8 PE |
2301 | bit parts of a 32 bit number). Return the number of items in DATA, |
2302 | or -1 if there is an error. */ | |
1fb3821b JD |
2303 | |
2304 | int | |
971de7fb | 2305 | x_check_property_data (Lisp_Object data) |
1fb3821b JD |
2306 | { |
2307 | Lisp_Object iter; | |
2308 | int size = 0; | |
2309 | ||
44f730c8 | 2310 | for (iter = data; CONSP (iter); iter = XCDR (iter)) |
1fb3821b JD |
2311 | { |
2312 | Lisp_Object o = XCAR (iter); | |
2313 | ||
2314 | if (! NUMBERP (o) && ! STRINGP (o) && ! CONSP (o)) | |
44f730c8 | 2315 | return -1; |
1fb3821b JD |
2316 | else if (CONSP (o) && |
2317 | (! NUMBERP (XCAR (o)) || ! NUMBERP (XCDR (o)))) | |
44f730c8 | 2318 | return -1; |
864d7ce7 PE |
2319 | if (size == INT_MAX) |
2320 | return -1; | |
44f730c8 | 2321 | size++; |
1fb3821b JD |
2322 | } |
2323 | ||
2324 | return size; | |
2325 | } | |
2326 | ||
2327 | /* Convert lisp values to a C array. Values may be a number, a string | |
2328 | which is taken as an X atom name and converted to the atom value, or | |
2329 | a cons containing the two 16 bit parts of a 32 bit number. | |
2330 | ||
2331 | DPY is the display use to look up X atoms. | |
2332 | DATA is a Lisp list of values to be converted. | |
2333 | RET is the C array that contains the converted values. It is assumed | |
ff59904a | 2334 | it is big enough to hold all values. |
e22cf39c JD |
2335 | FORMAT is 8, 16 or 32 and denotes char/short/long for each C value to |
2336 | be stored in RET. Note that long is used for 32 even if long is more | |
2337 | than 32 bits (see man pages for XChangeProperty, XGetWindowProperty and | |
2338 | XClientMessageEvent). */ | |
1fb3821b JD |
2339 | |
2340 | void | |
971de7fb | 2341 | x_fill_property_data (Display *dpy, Lisp_Object data, void *ret, int format) |
1fb3821b | 2342 | { |
e22cf39c JD |
2343 | long val; |
2344 | long *d32 = (long *) ret; | |
2345 | short *d16 = (short *) ret; | |
2346 | char *d08 = (char *) ret; | |
1fb3821b JD |
2347 | Lisp_Object iter; |
2348 | ||
2349 | for (iter = data; CONSP (iter); iter = XCDR (iter)) | |
2350 | { | |
2351 | Lisp_Object o = XCAR (iter); | |
2352 | ||
be44ca6c PE |
2353 | if (INTEGERP (o) || FLOATP (o) || CONSP (o)) |
2354 | val = cons_to_signed (o, LONG_MIN, LONG_MAX); | |
1fb3821b JD |
2355 | else if (STRINGP (o)) |
2356 | { | |
2357 | BLOCK_INPUT; | |
51b59d79 | 2358 | val = (long) XInternAtom (dpy, SSDATA (o), False); |
1fb3821b JD |
2359 | UNBLOCK_INPUT; |
2360 | } | |
2361 | else | |
2362 | error ("Wrong type, must be string, number or cons"); | |
2363 | ||
2364 | if (format == 8) | |
be44ca6c PE |
2365 | { |
2366 | if (CHAR_MIN <= val && val <= CHAR_MAX) | |
2367 | *d08++ = val; | |
2368 | else | |
2369 | error ("Out of 'char' range"); | |
2370 | } | |
1fb3821b | 2371 | else if (format == 16) |
be44ca6c PE |
2372 | { |
2373 | if (SHRT_MIN <= val && val <= SHRT_MAX) | |
2374 | *d16++ = val; | |
2375 | else | |
2376 | error ("Out of 'short' range"); | |
2377 | } | |
1fb3821b JD |
2378 | else |
2379 | *d32++ = val; | |
2380 | } | |
2381 | } | |
2382 | ||
2383 | /* Convert an array of C values to a Lisp list. | |
2384 | F is the frame to be used to look up X atoms if the TYPE is XA_ATOM. | |
2385 | DATA is a C array of values to be converted. | |
2386 | TYPE is the type of the data. Only XA_ATOM is special, it converts | |
da6062e6 | 2387 | each number in DATA to its corresponding X atom as a symbol. |
1fb3821b JD |
2388 | FORMAT is 8, 16 or 32 and gives the size in bits for each C value to |
2389 | be stored in RET. | |
2390 | SIZE is the number of elements in DATA. | |
2391 | ||
b8d6f4af JD |
2392 | Important: When format is 32, data should contain an array of int, |
2393 | not an array of long as the X library returns. This makes a difference | |
2394 | when sizeof(long) != sizeof(int). | |
2395 | ||
1fb3821b JD |
2396 | Also see comment for selection_data_to_lisp_data above. */ |
2397 | ||
2398 | Lisp_Object | |
eec47d6b DN |
2399 | x_property_data_to_lisp (struct frame *f, const unsigned char *data, |
2400 | Atom type, int format, long unsigned int size) | |
1fb3821b | 2401 | { |
864d7ce7 PE |
2402 | ptrdiff_t format_bytes = format >> 3; |
2403 | if (PTRDIFF_MAX / format_bytes < size) | |
2404 | memory_full (SIZE_MAX); | |
1fb3821b | 2405 | return selection_data_to_lisp_data (FRAME_X_DISPLAY (f), |
864d7ce7 | 2406 | data, size * format_bytes, type, format); |
1fb3821b JD |
2407 | } |
2408 | ||
31f16913 | 2409 | /* Get the mouse position in frame relative coordinates. */ |
1fb3821b JD |
2410 | |
2411 | static void | |
971de7fb | 2412 | mouse_position_for_drop (FRAME_PTR f, int *x, int *y) |
1fb3821b JD |
2413 | { |
2414 | Window root, dummy_window; | |
2415 | int dummy; | |
2416 | ||
2417 | BLOCK_INPUT; | |
2418 | ||
2419 | XQueryPointer (FRAME_X_DISPLAY (f), | |
2420 | DefaultRootWindow (FRAME_X_DISPLAY (f)), | |
2421 | ||
2422 | /* The root window which contains the pointer. */ | |
2423 | &root, | |
2424 | ||
2425 | /* Window pointer is on, not used */ | |
2426 | &dummy_window, | |
2427 | ||
2428 | /* The position on that root window. */ | |
2429 | x, y, | |
2430 | ||
2431 | /* x/y in dummy_window coordinates, not used. */ | |
2432 | &dummy, &dummy, | |
2433 | ||
2434 | /* Modifier keys and pointer buttons, about which | |
2435 | we don't care. */ | |
2436 | (unsigned int *) &dummy); | |
2437 | ||
2438 | ||
2439 | /* Absolute to relative. */ | |
2440 | *x -= f->left_pos + FRAME_OUTER_TO_INNER_DIFF_X (f); | |
2441 | *y -= f->top_pos + FRAME_OUTER_TO_INNER_DIFF_Y (f); | |
2442 | ||
2443 | UNBLOCK_INPUT; | |
2444 | } | |
2445 | ||
2446 | DEFUN ("x-get-atom-name", Fx_get_atom_name, | |
2447 | Sx_get_atom_name, 1, 2, 0, | |
2448 | doc: /* Return the X atom name for VALUE as a string. | |
2449 | VALUE may be a number or a cons where the car is the upper 16 bits and | |
2450 | the cdr is the lower 16 bits of a 32 bit value. | |
2451 | Use the display for FRAME or the current frame if FRAME is not given or nil. | |
2452 | ||
2453 | If the value is 0 or the atom is not known, return the empty string. */) | |
5842a27b | 2454 | (Lisp_Object value, Lisp_Object frame) |
1fb3821b JD |
2455 | { |
2456 | struct frame *f = check_x_frame (frame); | |
2457 | char *name = 0; | |
42ca4633 | 2458 | char empty[] = ""; |
1fb3821b | 2459 | Lisp_Object ret = Qnil; |
1fb3821b JD |
2460 | Display *dpy = FRAME_X_DISPLAY (f); |
2461 | Atom atom; | |
c525d842 | 2462 | int had_errors; |
1fb3821b | 2463 | |
be44ca6c | 2464 | CONS_TO_INTEGER (value, Atom, atom); |
1fb3821b JD |
2465 | |
2466 | BLOCK_INPUT; | |
9ba8e10d | 2467 | x_catch_errors (dpy); |
42ca4633 | 2468 | name = atom ? XGetAtomName (dpy, atom) : empty; |
c525d842 CY |
2469 | had_errors = x_had_errors_p (dpy); |
2470 | x_uncatch_errors (); | |
1fb3821b | 2471 | |
c525d842 | 2472 | if (!had_errors) |
3a5077c5 | 2473 | ret = build_string (name); |
1fb3821b | 2474 | |
1fb3821b | 2475 | if (atom && name) XFree (name); |
8b3ad112 | 2476 | if (NILP (ret)) ret = empty_unibyte_string; |
1fb3821b JD |
2477 | |
2478 | UNBLOCK_INPUT; | |
2479 | ||
2480 | return ret; | |
2481 | } | |
2482 | ||
9fc68699 JD |
2483 | DEFUN ("x-register-dnd-atom", Fx_register_dnd_atom, |
2484 | Sx_register_dnd_atom, 1, 2, 0, | |
2485 | doc: /* Request that dnd events are made for ClientMessages with ATOM. | |
2486 | ATOM can be a symbol or a string. The ATOM is interned on the display that | |
2487 | FRAME is on. If FRAME is nil, the selected frame is used. */) | |
5842a27b | 2488 | (Lisp_Object atom, Lisp_Object frame) |
9fc68699 JD |
2489 | { |
2490 | Atom x_atom; | |
2491 | struct frame *f = check_x_frame (frame); | |
ac82cc6a | 2492 | ptrdiff_t i; |
9fc68699 JD |
2493 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
2494 | ||
2495 | ||
2496 | if (SYMBOLP (atom)) | |
a9f737ee | 2497 | x_atom = symbol_to_x_atom (dpyinfo, atom); |
9fc68699 JD |
2498 | else if (STRINGP (atom)) |
2499 | { | |
2500 | BLOCK_INPUT; | |
51b59d79 | 2501 | x_atom = XInternAtom (FRAME_X_DISPLAY (f), SSDATA (atom), False); |
9fc68699 JD |
2502 | UNBLOCK_INPUT; |
2503 | } | |
2504 | else | |
2505 | error ("ATOM must be a symbol or a string"); | |
2506 | ||
db9cd97a | 2507 | for (i = 0; i < dpyinfo->x_dnd_atoms_length; ++i) |
9fc68699 JD |
2508 | if (dpyinfo->x_dnd_atoms[i] == x_atom) |
2509 | return Qnil; | |
2510 | ||
db9cd97a | 2511 | if (dpyinfo->x_dnd_atoms_length == dpyinfo->x_dnd_atoms_size) |
a69fbedb PE |
2512 | dpyinfo->x_dnd_atoms = |
2513 | xpalloc (dpyinfo->x_dnd_atoms, &dpyinfo->x_dnd_atoms_size, | |
2514 | 1, -1, sizeof *dpyinfo->x_dnd_atoms); | |
9fc68699 JD |
2515 | |
2516 | dpyinfo->x_dnd_atoms[dpyinfo->x_dnd_atoms_length++] = x_atom; | |
2517 | return Qnil; | |
2518 | } | |
2519 | ||
2520 | /* Convert an XClientMessageEvent to a Lisp event of type DRAG_N_DROP_EVENT. */ | |
1fb3821b JD |
2521 | |
2522 | int | |
5e617bc2 JB |
2523 | x_handle_dnd_message (struct frame *f, XClientMessageEvent *event, |
2524 | struct x_display_info *dpyinfo, struct input_event *bufp) | |
1fb3821b JD |
2525 | { |
2526 | Lisp_Object vec; | |
2527 | Lisp_Object frame; | |
e22cf39c JD |
2528 | /* format 32 => size 5, format 16 => size 10, format 8 => size 20 */ |
2529 | unsigned long size = 160/event->format; | |
1fb3821b | 2530 | int x, y; |
31f16913 | 2531 | unsigned char *data = (unsigned char *) event->data.b; |
252c5ee1 | 2532 | int idata[5]; |
ac82cc6a | 2533 | ptrdiff_t i; |
9fc68699 | 2534 | |
db9cd97a | 2535 | for (i = 0; i < dpyinfo->x_dnd_atoms_length; ++i) |
9fc68699 JD |
2536 | if (dpyinfo->x_dnd_atoms[i] == event->message_type) break; |
2537 | ||
2538 | if (i == dpyinfo->x_dnd_atoms_length) return 0; | |
1fb3821b JD |
2539 | |
2540 | XSETFRAME (frame, f); | |
2541 | ||
31f16913 JD |
2542 | /* On a 64 bit machine, the event->data.l array members are 64 bits (long), |
2543 | but the x_property_data_to_lisp (or rather selection_data_to_lisp_data) | |
2544 | function expects them to be of size int (i.e. 32). So to be able to | |
2545 | use that function, put the data in the form it expects if format is 32. */ | |
2546 | ||
2172544b | 2547 | if (32 < BITS_PER_LONG && event->format == 32) |
31f16913 | 2548 | { |
31f16913 | 2549 | for (i = 0; i < 5; ++i) /* There are only 5 longs in a ClientMessage. */ |
864d7ce7 | 2550 | idata[i] = event->data.l[i]; |
31f16913 JD |
2551 | data = (unsigned char *) idata; |
2552 | } | |
2553 | ||
d2f14999 | 2554 | vec = Fmake_vector (make_number (4), Qnil); |
3ae565b3 SM |
2555 | ASET (vec, 0, SYMBOL_NAME (x_atom_to_symbol (FRAME_X_DISPLAY (f), |
2556 | event->message_type))); | |
2557 | ASET (vec, 1, frame); | |
2558 | ASET (vec, 2, make_number (event->format)); | |
2559 | ASET (vec, 3, x_property_data_to_lisp (f, | |
2560 | data, | |
2561 | event->message_type, | |
2562 | event->format, | |
2563 | size)); | |
1fb3821b JD |
2564 | |
2565 | mouse_position_for_drop (f, &x, &y); | |
2566 | bufp->kind = DRAG_N_DROP_EVENT; | |
862c94ca | 2567 | bufp->frame_or_window = frame; |
1fb3821b JD |
2568 | bufp->timestamp = CurrentTime; |
2569 | bufp->x = make_number (x); | |
2570 | bufp->y = make_number (y); | |
862c94ca | 2571 | bufp->arg = vec; |
1fb3821b JD |
2572 | bufp->modifiers = 0; |
2573 | ||
2574 | return 1; | |
2575 | } | |
2576 | ||
2577 | DEFUN ("x-send-client-message", Fx_send_client_event, | |
2578 | Sx_send_client_message, 6, 6, 0, | |
2579 | doc: /* Send a client message of MESSAGE-TYPE to window DEST on DISPLAY. | |
2580 | ||
2581 | For DISPLAY, specify either a frame or a display name (a string). | |
2582 | If DISPLAY is nil, that stands for the selected frame's display. | |
2583 | DEST may be a number, in which case it is a Window id. The value 0 may | |
2584 | be used to send to the root window of the DISPLAY. | |
2585 | If DEST is a cons, it is converted to a 32 bit number | |
2586 | with the high 16 bits from the car and the lower 16 bit from the cdr. That | |
2587 | number is then used as a window id. | |
2588 | If DEST is a frame the event is sent to the outer window of that frame. | |
69785ad0 | 2589 | A value of nil means the currently selected frame. |
1fb3821b JD |
2590 | If DEST is the string "PointerWindow" the event is sent to the window that |
2591 | contains the pointer. If DEST is the string "InputFocus" the event is | |
2592 | sent to the window that has the input focus. | |
2593 | FROM is the frame sending the event. Use nil for currently selected frame. | |
2594 | MESSAGE-TYPE is the name of an Atom as a string. | |
2595 | FORMAT must be one of 8, 16 or 32 and determines the size of the values in | |
2596 | bits. VALUES is a list of numbers, cons and/or strings containing the values | |
2597 | to send. If a value is a string, it is converted to an Atom and the value of | |
2598 | the Atom is sent. If a value is a cons, it is converted to a 32 bit number | |
2599 | with the high 16 bits from the car and the lower 16 bit from the cdr. | |
2600 | If more values than fits into the event is given, the excessive values | |
2601 | are ignored. */) | |
5e617bc2 JB |
2602 | (Lisp_Object display, Lisp_Object dest, Lisp_Object from, |
2603 | Lisp_Object message_type, Lisp_Object format, Lisp_Object values) | |
2d9074ba JD |
2604 | { |
2605 | struct x_display_info *dpyinfo = check_x_display_info (display); | |
2606 | ||
933e29ff | 2607 | CHECK_STRING (message_type); |
5e617bc2 JB |
2608 | x_send_client_event (display, dest, from, |
2609 | XInternAtom (dpyinfo->display, | |
2610 | SSDATA (message_type), | |
2611 | False), | |
2612 | format, values); | |
2d9074ba JD |
2613 | |
2614 | return Qnil; | |
2615 | } | |
2616 | ||
2617 | void | |
5e617bc2 JB |
2618 | x_send_client_event (Lisp_Object display, Lisp_Object dest, Lisp_Object from, |
2619 | Atom message_type, Lisp_Object format, Lisp_Object values) | |
1fb3821b JD |
2620 | { |
2621 | struct x_display_info *dpyinfo = check_x_display_info (display); | |
2622 | Window wdest; | |
2623 | XEvent event; | |
1fb3821b | 2624 | struct frame *f = check_x_frame (from); |
1fb3821b JD |
2625 | int to_root; |
2626 | ||
1fb3821b JD |
2627 | CHECK_NUMBER (format); |
2628 | CHECK_CONS (values); | |
2629 | ||
2630 | if (x_check_property_data (values) == -1) | |
2631 | error ("Bad data in VALUES, must be number, cons or string"); | |
2632 | ||
d311d28c | 2633 | if (XINT (format) != 8 && XINT (format) != 16 && XINT (format) != 32) |
1fb3821b | 2634 | error ("FORMAT must be one of 8, 16 or 32"); |
a0ecb2ac | 2635 | |
d311d28c PE |
2636 | event.xclient.type = ClientMessage; |
2637 | event.xclient.format = XINT (format); | |
2638 | ||
1fb3821b JD |
2639 | if (FRAMEP (dest) || NILP (dest)) |
2640 | { | |
2641 | struct frame *fdest = check_x_frame (dest); | |
2642 | wdest = FRAME_OUTER_WINDOW (fdest); | |
2643 | } | |
2644 | else if (STRINGP (dest)) | |
2645 | { | |
42a5b22f | 2646 | if (strcmp (SSDATA (dest), "PointerWindow") == 0) |
1fb3821b | 2647 | wdest = PointerWindow; |
42a5b22f | 2648 | else if (strcmp (SSDATA (dest), "InputFocus") == 0) |
1fb3821b JD |
2649 | wdest = InputFocus; |
2650 | else | |
2651 | error ("DEST as a string must be one of PointerWindow or InputFocus"); | |
2652 | } | |
be44ca6c PE |
2653 | else if (INTEGERP (dest) || FLOATP (dest) || CONSP (dest)) |
2654 | CONS_TO_INTEGER (dest, Window, wdest); | |
1fb3821b JD |
2655 | else |
2656 | error ("DEST must be a frame, nil, string, number or cons"); | |
2657 | ||
2658 | if (wdest == 0) wdest = dpyinfo->root_window; | |
2659 | to_root = wdest == dpyinfo->root_window; | |
2660 | ||
1fb3821b JD |
2661 | BLOCK_INPUT; |
2662 | ||
2d9074ba | 2663 | event.xclient.message_type = message_type; |
1fb3821b JD |
2664 | event.xclient.display = dpyinfo->display; |
2665 | ||
2666 | /* Some clients (metacity for example) expects sending window to be here | |
2667 | when sending to the root window. */ | |
2668 | event.xclient.window = to_root ? FRAME_OUTER_WINDOW (f) : wdest; | |
2669 | ||
6e816df5 | 2670 | |
1fb3821b JD |
2671 | memset (event.xclient.data.b, 0, sizeof (event.xclient.data.b)); |
2672 | x_fill_property_data (dpyinfo->display, values, event.xclient.data.b, | |
2673 | event.xclient.format); | |
2674 | ||
2675 | /* If event mask is 0 the event is sent to the client that created | |
2676 | the destination window. But if we are sending to the root window, | |
2677 | there is no such client. Then we set the event mask to 0xffff. The | |
2678 | event then goes to clients selecting for events on the root window. */ | |
9ba8e10d | 2679 | x_catch_errors (dpyinfo->display); |
1fb3821b JD |
2680 | { |
2681 | int propagate = to_root ? False : True; | |
2682 | unsigned mask = to_root ? 0xffff : 0; | |
2683 | XSendEvent (dpyinfo->display, wdest, propagate, mask, &event); | |
2684 | XFlush (dpyinfo->display); | |
2685 | } | |
4545fa20 | 2686 | x_uncatch_errors (); |
1fb3821b | 2687 | UNBLOCK_INPUT; |
1fb3821b JD |
2688 | } |
2689 | ||
2690 | \f | |
ede4db72 | 2691 | void |
971de7fb | 2692 | syms_of_xselect (void) |
ede4db72 | 2693 | { |
ede4db72 RS |
2694 | defsubr (&Sx_get_selection_internal); |
2695 | defsubr (&Sx_own_selection_internal); | |
2696 | defsubr (&Sx_disown_selection_internal); | |
2697 | defsubr (&Sx_selection_owner_p); | |
2698 | defsubr (&Sx_selection_exists_p); | |
2699 | ||
1fb3821b JD |
2700 | defsubr (&Sx_get_atom_name); |
2701 | defsubr (&Sx_send_client_message); | |
9fc68699 | 2702 | defsubr (&Sx_register_dnd_atom); |
1fb3821b | 2703 | |
ede4db72 RS |
2704 | reading_selection_reply = Fcons (Qnil, Qnil); |
2705 | staticpro (&reading_selection_reply); | |
2706 | reading_selection_window = 0; | |
2707 | reading_which_selection = 0; | |
2708 | ||
2709 | property_change_wait_list = 0; | |
2f65feb6 | 2710 | prop_location_identifier = 0; |
ede4db72 RS |
2711 | property_change_reply = Fcons (Qnil, Qnil); |
2712 | staticpro (&property_change_reply); | |
2713 | ||
e067f0c1 CY |
2714 | converted_selections = NULL; |
2715 | conversion_fail_tag = None; | |
2716 | ||
29208e82 | 2717 | DEFVAR_LISP ("selection-converter-alist", Vselection_converter_alist, |
8c1a1077 PJ |
2718 | doc: /* An alist associating X Windows selection-types with functions. |
2719 | These functions are called to convert the selection, with three args: | |
2720 | the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD'); | |
2721 | a desired type to which the selection should be converted; | |
2722 | and the local selection value (whatever was given to `x-own-selection'). | |
2723 | ||
2724 | The function should return the value to send to the X server | |
2725 | \(typically a string). A return value of nil | |
2726 | means that the conversion could not be done. | |
2727 | A return value which is the symbol `NULL' | |
2728 | means that a side-effect was executed, | |
2729 | and there is no meaningful selection value. */); | |
ede4db72 RS |
2730 | Vselection_converter_alist = Qnil; |
2731 | ||
29208e82 | 2732 | DEFVAR_LISP ("x-lost-selection-functions", Vx_lost_selection_functions, |
8c1a1077 PJ |
2733 | doc: /* A list of functions to be called when Emacs loses an X selection. |
2734 | \(This happens when some other X client makes its own selection | |
2735 | or when a Lisp program explicitly clears the selection.) | |
2736 | The functions are called with one argument, the selection type | |
2737 | \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'). */); | |
c917a8de | 2738 | Vx_lost_selection_functions = Qnil; |
ede4db72 | 2739 | |
29208e82 | 2740 | DEFVAR_LISP ("x-sent-selection-functions", Vx_sent_selection_functions, |
8c1a1077 | 2741 | doc: /* A list of functions to be called when Emacs answers a selection request. |
e067f0c1 | 2742 | The functions are called with three arguments: |
8c1a1077 PJ |
2743 | - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD'); |
2744 | - the selection-type which Emacs was asked to convert the | |
2745 | selection into before sending (for example, `STRING' or `LENGTH'); | |
2746 | - a flag indicating success or failure for responding to the request. | |
2747 | We might have failed (and declined the request) for any number of reasons, | |
2748 | including being asked for a selection that we no longer own, or being asked | |
2749 | to convert into a type that we don't know about or that is inappropriate. | |
2750 | This hook doesn't let you change the behavior of Emacs's selection replies, | |
2751 | it merely informs you that they have happened. */); | |
c917a8de | 2752 | Vx_sent_selection_functions = Qnil; |
ede4db72 | 2753 | |
4b80f674 CY |
2754 | DEFVAR_LISP ("x-select-enable-clipboard-manager", |
2755 | Vx_select_enable_clipboard_manager, | |
2756 | doc: /* Whether to enable X clipboard manager support. | |
2757 | If non-nil, then whenever Emacs is killed or an Emacs frame is deleted | |
2758 | while owning the X clipboard, the clipboard contents are saved to the | |
2759 | clipboard manager if one is present. */); | |
2760 | Vx_select_enable_clipboard_manager = Qt; | |
2761 | ||
29208e82 | 2762 | DEFVAR_INT ("x-selection-timeout", x_selection_timeout, |
8c1a1077 PJ |
2763 | doc: /* Number of milliseconds to wait for a selection reply. |
2764 | If the selection owner doesn't reply in this time, we give up. | |
2765 | A value of 0 means wait as long as necessary. This is initialized from the | |
2766 | \"*selectionTimeout\" resource. */); | |
ede4db72 RS |
2767 | x_selection_timeout = 0; |
2768 | ||
9852377f | 2769 | /* QPRIMARY is defined in keyboard.c. */ |
f3d4e0a4 CY |
2770 | DEFSYM (QSECONDARY, "SECONDARY"); |
2771 | DEFSYM (QSTRING, "STRING"); | |
2772 | DEFSYM (QINTEGER, "INTEGER"); | |
2773 | DEFSYM (QCLIPBOARD, "CLIPBOARD"); | |
2774 | DEFSYM (QTIMESTAMP, "TIMESTAMP"); | |
2775 | DEFSYM (QTEXT, "TEXT"); | |
2776 | DEFSYM (QCOMPOUND_TEXT, "COMPOUND_TEXT"); | |
2777 | DEFSYM (QUTF8_STRING, "UTF8_STRING"); | |
2778 | DEFSYM (QDELETE, "DELETE"); | |
2779 | DEFSYM (QMULTIPLE, "MULTIPLE"); | |
2780 | DEFSYM (QINCR, "INCR"); | |
2781 | DEFSYM (QEMACS_TMP, "_EMACS_TMP_"); | |
2782 | DEFSYM (QTARGETS, "TARGETS"); | |
2783 | DEFSYM (QATOM, "ATOM"); | |
2784 | DEFSYM (QATOM_PAIR, "ATOM_PAIR"); | |
a9f737ee CY |
2785 | DEFSYM (QCLIPBOARD_MANAGER, "CLIPBOARD_MANAGER"); |
2786 | DEFSYM (QSAVE_TARGETS, "SAVE_TARGETS"); | |
f3d4e0a4 CY |
2787 | DEFSYM (QNULL, "NULL"); |
2788 | DEFSYM (Qcompound_text_with_extensions, "compound-text-with-extensions"); | |
2789 | DEFSYM (Qforeign_selection, "foreign-selection"); | |
cd18e7e3 JB |
2790 | DEFSYM (Qx_lost_selection_functions, "x-lost-selection-functions"); |
2791 | DEFSYM (Qx_sent_selection_functions, "x-sent-selection-functions"); | |
ede4db72 | 2792 | } |