Commit | Line | Data |
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2408b3a1 | 1 | /* X Selection processing for Emacs. |
0b5538bd | 2 | Copyright (C) 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003, |
5df4f04c | 3 | 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
ede4db72 RS |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
ede4db72 | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
ede4db72 RS |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
ede4db72 | 19 | |
c6c5df7f | 20 | |
ede4db72 RS |
21 | /* Rewritten by jwz */ |
22 | ||
18160b98 | 23 | #include <config.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" |
5faa9b45 | 38 | #include "buffer.h" |
dfcf069d | 39 | #include "process.h" |
1fb3821b | 40 | #include "termhooks.h" |
dd0fe424 | 41 | #include "keyboard.h" |
1fb3821b JD |
42 | |
43 | #include <X11/Xproto.h> | |
7da64e5c | 44 | |
d9c0d4a3 GM |
45 | struct prop_location; |
46 | ||
f57e2426 J |
47 | static Lisp_Object x_atom_to_symbol (Display *dpy, Atom atom); |
48 | static Atom symbol_to_x_atom (struct x_display_info *, Display *, | |
49 | Lisp_Object); | |
50 | static void x_own_selection (Lisp_Object, Lisp_Object); | |
51 | static Lisp_Object x_get_local_selection (Lisp_Object, Lisp_Object, int); | |
52 | static void x_decline_selection_request (struct input_event *); | |
53 | static Lisp_Object x_selection_request_lisp_error (Lisp_Object); | |
54 | static Lisp_Object queue_selection_requests_unwind (Lisp_Object); | |
55 | static Lisp_Object some_frame_on_display (struct x_display_info *); | |
56 | static Lisp_Object x_catch_errors_unwind (Lisp_Object); | |
57 | static void x_reply_selection_request (struct input_event *, int, | |
58 | unsigned char *, int, Atom); | |
59 | static int waiting_for_other_props_on_window (Display *, Window); | |
60 | static struct prop_location *expect_property_change (Display *, Window, | |
61 | Atom, int); | |
62 | static void unexpect_property_change (struct prop_location *); | |
63 | static Lisp_Object wait_for_property_change_unwind (Lisp_Object); | |
64 | static void wait_for_property_change (struct prop_location *); | |
65 | static Lisp_Object x_get_foreign_selection (Lisp_Object, | |
66 | Lisp_Object, | |
67 | Lisp_Object); | |
68 | static void x_get_window_property (Display *, Window, Atom, | |
69 | unsigned char **, int *, | |
70 | Atom *, int *, unsigned long *, int); | |
71 | static void receive_incremental_selection (Display *, Window, Atom, | |
72 | Lisp_Object, unsigned, | |
73 | unsigned char **, int *, | |
74 | Atom *, int *, unsigned long *); | |
75 | static Lisp_Object x_get_window_property_as_lisp_data (Display *, | |
76 | Window, Atom, | |
77 | Lisp_Object, Atom); | |
eec47d6b DN |
78 | static Lisp_Object selection_data_to_lisp_data (Display *, |
79 | const unsigned char *, | |
f57e2426 J |
80 | int, Atom, int); |
81 | static void lisp_data_to_selection_data (Display *, Lisp_Object, | |
82 | unsigned char **, Atom *, | |
83 | unsigned *, int *, int *); | |
84 | static Lisp_Object clean_local_selection_data (Lisp_Object); | |
d9c0d4a3 GM |
85 | |
86 | /* Printing traces to stderr. */ | |
87 | ||
88 | #ifdef TRACE_SELECTION | |
89 | #define TRACE0(fmt) \ | |
90 | fprintf (stderr, "%d: " fmt "\n", getpid ()) | |
91 | #define TRACE1(fmt, a0) \ | |
92 | fprintf (stderr, "%d: " fmt "\n", getpid (), a0) | |
93 | #define TRACE2(fmt, a0, a1) \ | |
94 | fprintf (stderr, "%d: " fmt "\n", getpid (), a0, a1) | |
9c3ad9e1 JD |
95 | #define TRACE3(fmt, a0, a1, a2) \ |
96 | fprintf (stderr, "%d: " fmt "\n", getpid (), a0, a1, a2) | |
d9c0d4a3 GM |
97 | #else |
98 | #define TRACE0(fmt) (void) 0 | |
99 | #define TRACE1(fmt, a0) (void) 0 | |
100 | #define TRACE2(fmt, a0, a1) (void) 0 | |
9c3ad9e1 | 101 | #define TRACE3(fmt, a0, a1) (void) 0 |
d9c0d4a3 GM |
102 | #endif |
103 | ||
104 | ||
e45a249b | 105 | Lisp_Object QSECONDARY, QSTRING, QINTEGER, QCLIPBOARD, QTIMESTAMP, |
ede4db72 RS |
106 | QTEXT, QDELETE, QMULTIPLE, QINCR, QEMACS_TMP, QTARGETS, QATOM, QNULL, |
107 | QATOM_PAIR; | |
108 | ||
e6c7c988 | 109 | Lisp_Object QCOMPOUND_TEXT; /* This is a type of selection. */ |
5109c8dd | 110 | Lisp_Object QUTF8_STRING; /* This is a type of selection. */ |
e6c7c988 | 111 | |
5a79ea57 | 112 | Lisp_Object Qcompound_text_with_extensions; |
fbbe0ace | 113 | |
e57ad4d8 KH |
114 | static Lisp_Object Qforeign_selection; |
115 | ||
ede4db72 RS |
116 | /* If this is a smaller number than the max-request-size of the display, |
117 | emacs will use INCR selection transfer when the selection is larger | |
118 | than this. The max-request-size is usually around 64k, so if you want | |
1b65481e | 119 | emacs to use incremental selection transfers when the selection is |
ede4db72 | 120 | smaller than that, set this. I added this mostly for debugging the |
8f4f023f | 121 | incremental transfer stuff, but it might improve server performance. */ |
ede4db72 RS |
122 | #define MAX_SELECTION_QUANTUM 0xFFFFFF |
123 | ||
c3498e64 | 124 | #define SELECTION_QUANTUM(dpy) ((XMaxRequestSize(dpy) << 2) - 100) |
ede4db72 | 125 | |
7da64e5c | 126 | /* The timestamp of the last input event Emacs received from the X server. */ |
29674445 KH |
127 | /* Defined in keyboard.c. */ |
128 | extern unsigned long last_event_timestamp; | |
ede4db72 | 129 | |
dd0fe424 KS |
130 | |
131 | \f | |
678b3958 KS |
132 | /* Define a queue to save up SELECTION_REQUEST_EVENT events for later |
133 | handling. */ | |
dd0fe424 KS |
134 | |
135 | struct selection_event_queue | |
136 | { | |
137 | struct input_event event; | |
138 | struct selection_event_queue *next; | |
139 | }; | |
140 | ||
141 | static struct selection_event_queue *selection_queue; | |
142 | ||
678b3958 | 143 | /* Nonzero means queue up SELECTION_REQUEST_EVENT events. */ |
dd0fe424 KS |
144 | |
145 | static int x_queue_selection_requests; | |
146 | ||
678b3958 | 147 | /* Queue up an SELECTION_REQUEST_EVENT *EVENT, to be processed later. */ |
dd0fe424 KS |
148 | |
149 | static void | |
971de7fb | 150 | x_queue_event (struct input_event *event) |
dd0fe424 KS |
151 | { |
152 | struct selection_event_queue *queue_tmp; | |
153 | ||
678b3958 KS |
154 | /* Don't queue repeated requests. |
155 | This only happens for large requests which uses the incremental protocol. */ | |
dd0fe424 KS |
156 | for (queue_tmp = selection_queue; queue_tmp; queue_tmp = queue_tmp->next) |
157 | { | |
72af86bd | 158 | if (!memcmp (&queue_tmp->event, event, sizeof (*event))) |
dd0fe424 | 159 | { |
678b3958 KS |
160 | TRACE1 ("DECLINE DUP SELECTION EVENT %08lx", (unsigned long)queue_tmp); |
161 | x_decline_selection_request (event); | |
dd0fe424 KS |
162 | return; |
163 | } | |
164 | } | |
165 | ||
166 | queue_tmp | |
167 | = (struct selection_event_queue *) xmalloc (sizeof (struct selection_event_queue)); | |
168 | ||
169 | if (queue_tmp != NULL) | |
170 | { | |
678b3958 | 171 | TRACE1 ("QUEUE SELECTION EVENT %08lx", (unsigned long)queue_tmp); |
dd0fe424 KS |
172 | queue_tmp->event = *event; |
173 | queue_tmp->next = selection_queue; | |
174 | selection_queue = queue_tmp; | |
175 | } | |
176 | } | |
177 | ||
678b3958 | 178 | /* Start queuing SELECTION_REQUEST_EVENT events. */ |
dd0fe424 KS |
179 | |
180 | static void | |
971de7fb | 181 | x_start_queuing_selection_requests (void) |
dd0fe424 KS |
182 | { |
183 | if (x_queue_selection_requests) | |
184 | abort (); | |
185 | ||
186 | x_queue_selection_requests++; | |
187 | TRACE1 ("x_start_queuing_selection_requests %d", x_queue_selection_requests); | |
188 | } | |
189 | ||
678b3958 | 190 | /* Stop queuing SELECTION_REQUEST_EVENT events. */ |
dd0fe424 KS |
191 | |
192 | static void | |
971de7fb | 193 | x_stop_queuing_selection_requests (void) |
dd0fe424 KS |
194 | { |
195 | TRACE1 ("x_stop_queuing_selection_requests %d", x_queue_selection_requests); | |
196 | --x_queue_selection_requests; | |
197 | ||
198 | /* Take all the queued events and put them back | |
199 | so that they get processed afresh. */ | |
200 | ||
201 | while (selection_queue != NULL) | |
202 | { | |
203 | struct selection_event_queue *queue_tmp = selection_queue; | |
678b3958 | 204 | TRACE1 ("RESTORE SELECTION EVENT %08lx", (unsigned long)queue_tmp); |
dd0fe424 KS |
205 | kbd_buffer_unget_event (&queue_tmp->event); |
206 | selection_queue = queue_tmp->next; | |
207 | xfree ((char *)queue_tmp); | |
208 | } | |
209 | } | |
210 | \f | |
211 | ||
1b65481e | 212 | /* This converts a Lisp symbol to a server Atom, avoiding a server |
ede4db72 RS |
213 | roundtrip whenever possible. */ |
214 | ||
215 | static Atom | |
971de7fb | 216 | symbol_to_x_atom (struct x_display_info *dpyinfo, Display *display, Lisp_Object sym) |
ede4db72 RS |
217 | { |
218 | Atom val; | |
219 | if (NILP (sym)) return 0; | |
220 | if (EQ (sym, QPRIMARY)) return XA_PRIMARY; | |
221 | if (EQ (sym, QSECONDARY)) return XA_SECONDARY; | |
222 | if (EQ (sym, QSTRING)) return XA_STRING; | |
223 | if (EQ (sym, QINTEGER)) return XA_INTEGER; | |
224 | if (EQ (sym, QATOM)) return XA_ATOM; | |
5c3a351a RS |
225 | if (EQ (sym, QCLIPBOARD)) return dpyinfo->Xatom_CLIPBOARD; |
226 | if (EQ (sym, QTIMESTAMP)) return dpyinfo->Xatom_TIMESTAMP; | |
227 | if (EQ (sym, QTEXT)) return dpyinfo->Xatom_TEXT; | |
e6c7c988 | 228 | if (EQ (sym, QCOMPOUND_TEXT)) return dpyinfo->Xatom_COMPOUND_TEXT; |
5109c8dd | 229 | if (EQ (sym, QUTF8_STRING)) return dpyinfo->Xatom_UTF8_STRING; |
5c3a351a RS |
230 | if (EQ (sym, QDELETE)) return dpyinfo->Xatom_DELETE; |
231 | if (EQ (sym, QMULTIPLE)) return dpyinfo->Xatom_MULTIPLE; | |
232 | if (EQ (sym, QINCR)) return dpyinfo->Xatom_INCR; | |
233 | if (EQ (sym, QEMACS_TMP)) return dpyinfo->Xatom_EMACS_TMP; | |
234 | if (EQ (sym, QTARGETS)) return dpyinfo->Xatom_TARGETS; | |
235 | if (EQ (sym, QNULL)) return dpyinfo->Xatom_NULL; | |
ede4db72 RS |
236 | if (!SYMBOLP (sym)) abort (); |
237 | ||
51b59d79 | 238 | TRACE1 (" XInternAtom %s", SSDATA (SYMBOL_NAME (sym))); |
ede4db72 | 239 | BLOCK_INPUT; |
51b59d79 | 240 | val = XInternAtom (display, SSDATA (SYMBOL_NAME (sym)), False); |
ede4db72 RS |
241 | UNBLOCK_INPUT; |
242 | return val; | |
243 | } | |
244 | ||
245 | ||
246 | /* This converts a server Atom to a Lisp symbol, avoiding server roundtrips | |
247 | and calls to intern whenever possible. */ | |
248 | ||
249 | static Lisp_Object | |
971de7fb | 250 | x_atom_to_symbol (Display *dpy, Atom atom) |
ede4db72 | 251 | { |
d9c0d4a3 | 252 | struct x_display_info *dpyinfo; |
ede4db72 RS |
253 | char *str; |
254 | Lisp_Object val; | |
1b65481e | 255 | |
d9c0d4a3 GM |
256 | if (! atom) |
257 | return Qnil; | |
1b65481e | 258 | |
7da64e5c RS |
259 | switch (atom) |
260 | { | |
261 | case XA_PRIMARY: | |
262 | return QPRIMARY; | |
263 | case XA_SECONDARY: | |
264 | return QSECONDARY; | |
265 | case XA_STRING: | |
266 | return QSTRING; | |
267 | case XA_INTEGER: | |
268 | return QINTEGER; | |
269 | case XA_ATOM: | |
270 | return QATOM; | |
7da64e5c RS |
271 | } |
272 | ||
d9c0d4a3 | 273 | dpyinfo = x_display_info_for_display (dpy); |
5c3a351a | 274 | if (atom == dpyinfo->Xatom_CLIPBOARD) |
7da64e5c | 275 | return QCLIPBOARD; |
5c3a351a | 276 | if (atom == dpyinfo->Xatom_TIMESTAMP) |
7da64e5c | 277 | return QTIMESTAMP; |
5c3a351a | 278 | if (atom == dpyinfo->Xatom_TEXT) |
7da64e5c | 279 | return QTEXT; |
e6c7c988 KH |
280 | if (atom == dpyinfo->Xatom_COMPOUND_TEXT) |
281 | return QCOMPOUND_TEXT; | |
5109c8dd KH |
282 | if (atom == dpyinfo->Xatom_UTF8_STRING) |
283 | return QUTF8_STRING; | |
5c3a351a | 284 | if (atom == dpyinfo->Xatom_DELETE) |
7da64e5c | 285 | return QDELETE; |
5c3a351a | 286 | if (atom == dpyinfo->Xatom_MULTIPLE) |
7da64e5c | 287 | return QMULTIPLE; |
5c3a351a | 288 | if (atom == dpyinfo->Xatom_INCR) |
7da64e5c | 289 | return QINCR; |
5c3a351a | 290 | if (atom == dpyinfo->Xatom_EMACS_TMP) |
7da64e5c | 291 | return QEMACS_TMP; |
5c3a351a | 292 | if (atom == dpyinfo->Xatom_TARGETS) |
7da64e5c | 293 | return QTARGETS; |
5c3a351a | 294 | if (atom == dpyinfo->Xatom_NULL) |
7da64e5c | 295 | return QNULL; |
ede4db72 RS |
296 | |
297 | BLOCK_INPUT; | |
d9c0d4a3 | 298 | str = XGetAtomName (dpy, atom); |
ede4db72 | 299 | UNBLOCK_INPUT; |
d9c0d4a3 | 300 | TRACE1 ("XGetAtomName --> %s", str); |
ede4db72 RS |
301 | if (! str) return Qnil; |
302 | val = intern (str); | |
303 | BLOCK_INPUT; | |
0158abbc | 304 | /* This was allocated by Xlib, so use XFree. */ |
ede4db72 RS |
305 | XFree (str); |
306 | UNBLOCK_INPUT; | |
307 | return val; | |
308 | } | |
8a89415e | 309 | \f |
ede4db72 | 310 | /* Do protocol to assert ourself as a selection owner. |
1b65481e | 311 | Update the Vselection_alist so that we can reply to later requests for |
ede4db72 RS |
312 | our selection. */ |
313 | ||
314 | static void | |
971de7fb | 315 | x_own_selection (Lisp_Object selection_name, Lisp_Object selection_value) |
ede4db72 | 316 | { |
378c33ca | 317 | struct frame *sf = SELECTED_FRAME (); |
428a555e KL |
318 | Window selecting_window; |
319 | Display *display; | |
7da64e5c | 320 | Time time = last_event_timestamp; |
ede4db72 | 321 | Atom selection_atom; |
428a555e | 322 | struct x_display_info *dpyinfo; |
ede4db72 | 323 | |
428a555e KL |
324 | if (! FRAME_X_P (sf)) |
325 | return; | |
326 | ||
327 | selecting_window = FRAME_X_WINDOW (sf); | |
328 | display = FRAME_X_DISPLAY (sf); | |
329 | dpyinfo = FRAME_X_DISPLAY_INFO (sf); | |
16041401 | 330 | |
b7826503 | 331 | CHECK_SYMBOL (selection_name); |
5c3a351a | 332 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection_name); |
ede4db72 RS |
333 | |
334 | BLOCK_INPUT; | |
9ba8e10d | 335 | x_catch_errors (display); |
ede4db72 | 336 | XSetSelectionOwner (display, selection_atom, selecting_window, time); |
a7b24d46 | 337 | x_check_errors (display, "Can't set selection: %s"); |
4545fa20 | 338 | x_uncatch_errors (); |
ede4db72 RS |
339 | UNBLOCK_INPUT; |
340 | ||
341 | /* Now update the local cache */ | |
342 | { | |
343 | Lisp_Object selection_time; | |
344 | Lisp_Object selection_data; | |
345 | Lisp_Object prev_value; | |
346 | ||
347 | selection_time = long_to_cons ((unsigned long) time); | |
16041401 CY |
348 | selection_data = list4 (selection_name, selection_value, |
349 | selection_time, selected_frame); | |
ede4db72 RS |
350 | prev_value = assq_no_quit (selection_name, Vselection_alist); |
351 | ||
352 | Vselection_alist = Fcons (selection_data, Vselection_alist); | |
353 | ||
354 | /* If we already owned the selection, remove the old selection data. | |
355 | Perhaps we should destructively modify it instead. | |
356 | Don't use Fdelq as that may QUIT. */ | |
357 | if (!NILP (prev_value)) | |
358 | { | |
359 | Lisp_Object rest; /* we know it's not the CAR, so it's easy. */ | |
99784d63 | 360 | for (rest = Vselection_alist; CONSP (rest); rest = XCDR (rest)) |
8e713be6 | 361 | if (EQ (prev_value, Fcar (XCDR (rest)))) |
ede4db72 | 362 | { |
f3fbd155 | 363 | XSETCDR (rest, Fcdr (XCDR (rest))); |
ede4db72 RS |
364 | break; |
365 | } | |
366 | } | |
367 | } | |
368 | } | |
369 | \f | |
370 | /* Given a selection-name and desired type, look up our local copy of | |
371 | the selection value and convert it to the type. | |
372 | The value is nil or a string. | |
5109c8dd KH |
373 | This function is used both for remote requests (LOCAL_REQUEST is zero) |
374 | and for local x-get-selection-internal (LOCAL_REQUEST is nonzero). | |
ede4db72 RS |
375 | |
376 | This calls random Lisp code, and may signal or gc. */ | |
377 | ||
378 | static Lisp_Object | |
971de7fb | 379 | x_get_local_selection (Lisp_Object selection_symbol, Lisp_Object target_type, int local_request) |
ede4db72 RS |
380 | { |
381 | Lisp_Object local_value; | |
382 | Lisp_Object handler_fn, value, type, check; | |
383 | int count; | |
384 | ||
385 | local_value = assq_no_quit (selection_symbol, Vselection_alist); | |
386 | ||
387 | if (NILP (local_value)) return Qnil; | |
388 | ||
389 | /* TIMESTAMP and MULTIPLE are special cases 'cause that's easiest. */ | |
390 | if (EQ (target_type, QTIMESTAMP)) | |
391 | { | |
392 | handler_fn = Qnil; | |
8e713be6 | 393 | value = XCAR (XCDR (XCDR (local_value))); |
ede4db72 RS |
394 | } |
395 | #if 0 | |
396 | else if (EQ (target_type, QDELETE)) | |
397 | { | |
398 | handler_fn = Qnil; | |
399 | Fx_disown_selection_internal | |
400 | (selection_symbol, | |
8e713be6 | 401 | XCAR (XCDR (XCDR (local_value)))); |
ede4db72 RS |
402 | value = QNULL; |
403 | } | |
404 | #endif | |
405 | ||
406 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
407 | else if (CONSP (target_type) | |
8e713be6 | 408 | && XCAR (target_type) == QMULTIPLE) |
ede4db72 | 409 | { |
9d2d1dd8 KH |
410 | Lisp_Object pairs; |
411 | int size; | |
ede4db72 | 412 | int i; |
8e713be6 | 413 | pairs = XCDR (target_type); |
9d2d1dd8 | 414 | size = XVECTOR (pairs)->size; |
ede4db72 RS |
415 | /* If the target is MULTIPLE, then target_type looks like |
416 | (MULTIPLE . [[SELECTION1 TARGET1] [SELECTION2 TARGET2] ... ]) | |
417 | We modify the second element of each pair in the vector and | |
418 | return it as [[SELECTION1 <value1>] [SELECTION2 <value2>] ... ] | |
419 | */ | |
420 | for (i = 0; i < size; i++) | |
421 | { | |
9d2d1dd8 KH |
422 | Lisp_Object pair; |
423 | pair = XVECTOR (pairs)->contents [i]; | |
ede4db72 RS |
424 | XVECTOR (pair)->contents [1] |
425 | = x_get_local_selection (XVECTOR (pair)->contents [0], | |
5109c8dd KH |
426 | XVECTOR (pair)->contents [1], |
427 | local_request); | |
ede4db72 RS |
428 | } |
429 | return pairs; | |
430 | } | |
431 | #endif | |
432 | else | |
433 | { | |
434 | /* Don't allow a quit within the converter. | |
435 | When the user types C-g, he would be surprised | |
436 | if by luck it came during a converter. */ | |
aed13378 | 437 | count = SPECPDL_INDEX (); |
ede4db72 RS |
438 | specbind (Qinhibit_quit, Qt); |
439 | ||
b7826503 | 440 | CHECK_SYMBOL (target_type); |
ede4db72 | 441 | handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist)); |
4f06187f RS |
442 | /* gcpro is not needed here since nothing but HANDLER_FN |
443 | is live, and that ought to be a symbol. */ | |
444 | ||
1eb4d468 RS |
445 | if (!NILP (handler_fn)) |
446 | value = call3 (handler_fn, | |
5109c8dd | 447 | selection_symbol, (local_request ? Qnil : target_type), |
8e713be6 | 448 | XCAR (XCDR (local_value))); |
1eb4d468 RS |
449 | else |
450 | value = Qnil; | |
ede4db72 RS |
451 | unbind_to (count, Qnil); |
452 | } | |
453 | ||
454 | /* Make sure this value is of a type that we could transmit | |
455 | to another X client. */ | |
a87ed99c | 456 | |
ede4db72 RS |
457 | check = value; |
458 | if (CONSP (value) | |
8e713be6 KR |
459 | && SYMBOLP (XCAR (value))) |
460 | type = XCAR (value), | |
461 | check = XCDR (value); | |
1b65481e | 462 | |
ede4db72 RS |
463 | if (STRINGP (check) |
464 | || VECTORP (check) | |
465 | || SYMBOLP (check) | |
7da64e5c | 466 | || INTEGERP (check) |
ede4db72 RS |
467 | || NILP (value)) |
468 | return value; | |
a87ed99c | 469 | /* Check for a value that cons_to_long could handle. */ |
ede4db72 | 470 | else if (CONSP (check) |
8e713be6 KR |
471 | && INTEGERP (XCAR (check)) |
472 | && (INTEGERP (XCDR (check)) | |
ede4db72 | 473 | || |
8e713be6 KR |
474 | (CONSP (XCDR (check)) |
475 | && INTEGERP (XCAR (XCDR (check))) | |
476 | && NILP (XCDR (XCDR (check)))))) | |
ede4db72 | 477 | return value; |
4d30ce50 KS |
478 | |
479 | signal_error ("Invalid data returned by selection-conversion function", | |
480 | list2 (handler_fn, value)); | |
ede4db72 RS |
481 | } |
482 | \f | |
483 | /* Subroutines of x_reply_selection_request. */ | |
484 | ||
5d0ba25b | 485 | /* Send a SelectionNotify event to the requestor with property=None, |
ede4db72 RS |
486 | meaning we were unable to do what they wanted. */ |
487 | ||
488 | static void | |
971de7fb | 489 | x_decline_selection_request (struct input_event *event) |
ede4db72 RS |
490 | { |
491 | XSelectionEvent reply; | |
1b65481e | 492 | |
ede4db72 RS |
493 | reply.type = SelectionNotify; |
494 | reply.display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 495 | reply.requestor = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
496 | reply.selection = SELECTION_EVENT_SELECTION (event); |
497 | reply.time = SELECTION_EVENT_TIME (event); | |
498 | reply.target = SELECTION_EVENT_TARGET (event); | |
499 | reply.property = None; | |
500 | ||
d9c0d4a3 GM |
501 | /* The reason for the error may be that the receiver has |
502 | died in the meantime. Handle that case. */ | |
ede4db72 | 503 | BLOCK_INPUT; |
9ba8e10d | 504 | x_catch_errors (reply.display); |
d9c0d4a3 | 505 | XSendEvent (reply.display, reply.requestor, False, 0L, (XEvent *) &reply); |
5c3a351a | 506 | XFlush (reply.display); |
4545fa20 | 507 | x_uncatch_errors (); |
ede4db72 RS |
508 | UNBLOCK_INPUT; |
509 | } | |
510 | ||
511 | /* This is the selection request currently being processed. | |
512 | It is set to zero when the request is fully processed. */ | |
513 | static struct input_event *x_selection_current_request; | |
514 | ||
ca29f2b8 GM |
515 | /* Display info in x_selection_request. */ |
516 | ||
517 | static struct x_display_info *selection_request_dpyinfo; | |
518 | ||
ede4db72 | 519 | /* Used as an unwind-protect clause so that, if a selection-converter signals |
2a1a4c9d | 520 | an error, we tell the requester that we were unable to do what they wanted |
ede4db72 RS |
521 | before we throw to top-level or go into the debugger or whatever. */ |
522 | ||
523 | static Lisp_Object | |
971de7fb | 524 | x_selection_request_lisp_error (Lisp_Object ignore) |
ede4db72 | 525 | { |
ca29f2b8 GM |
526 | if (x_selection_current_request != 0 |
527 | && selection_request_dpyinfo->display) | |
ede4db72 RS |
528 | x_decline_selection_request (x_selection_current_request); |
529 | return Qnil; | |
530 | } | |
c525d842 CY |
531 | |
532 | static Lisp_Object | |
971de7fb | 533 | x_catch_errors_unwind (Lisp_Object dummy) |
c525d842 CY |
534 | { |
535 | BLOCK_INPUT; | |
536 | x_uncatch_errors (); | |
537 | UNBLOCK_INPUT; | |
6f10509c | 538 | return Qnil; |
c525d842 | 539 | } |
ede4db72 | 540 | \f |
d1f21a66 RS |
541 | |
542 | /* This stuff is so that INCR selections are reentrant (that is, so we can | |
543 | be servicing multiple INCR selection requests simultaneously.) I haven't | |
544 | actually tested that yet. */ | |
545 | ||
546 | /* Keep a list of the property changes that are awaited. */ | |
547 | ||
548 | struct prop_location | |
549 | { | |
550 | int identifier; | |
551 | Display *display; | |
552 | Window window; | |
553 | Atom property; | |
554 | int desired_state; | |
555 | int arrived; | |
556 | struct prop_location *next; | |
557 | }; | |
558 | ||
971de7fb DN |
559 | static struct prop_location *expect_property_change (Display *display, Window window, Atom property, int state); |
560 | static void wait_for_property_change (struct prop_location *location); | |
561 | static void unexpect_property_change (struct prop_location *location); | |
562 | static int waiting_for_other_props_on_window (Display *display, Window window); | |
d1f21a66 RS |
563 | |
564 | static int prop_location_identifier; | |
565 | ||
566 | static Lisp_Object property_change_reply; | |
567 | ||
568 | static struct prop_location *property_change_reply_object; | |
569 | ||
570 | static struct prop_location *property_change_wait_list; | |
55b2d45d RS |
571 | |
572 | static Lisp_Object | |
971de7fb | 573 | queue_selection_requests_unwind (Lisp_Object tem) |
55b2d45d | 574 | { |
dd0fe424 | 575 | x_stop_queuing_selection_requests (); |
ab552306 | 576 | return Qnil; |
55b2d45d RS |
577 | } |
578 | ||
579 | /* Return some frame whose display info is DPYINFO. | |
580 | Return nil if there is none. */ | |
581 | ||
582 | static Lisp_Object | |
971de7fb | 583 | some_frame_on_display (struct x_display_info *dpyinfo) |
55b2d45d RS |
584 | { |
585 | Lisp_Object list, frame; | |
586 | ||
587 | FOR_EACH_FRAME (list, frame) | |
588 | { | |
428a555e KL |
589 | if (FRAME_X_P (XFRAME (frame)) |
590 | && FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
55b2d45d RS |
591 | return frame; |
592 | } | |
593 | ||
594 | return Qnil; | |
595 | } | |
d1f21a66 | 596 | \f |
ede4db72 RS |
597 | /* Send the reply to a selection request event EVENT. |
598 | TYPE is the type of selection data requested. | |
599 | DATA and SIZE describe the data to send, already converted. | |
600 | FORMAT is the unit-size (in bits) of the data to be transmitted. */ | |
601 | ||
46d47e41 | 602 | #ifdef TRACE_SELECTION |
ca7af97a | 603 | static int x_reply_selection_request_cnt; |
46d47e41 GM |
604 | #endif /* TRACE_SELECTION */ |
605 | ||
ede4db72 | 606 | static void |
971de7fb | 607 | x_reply_selection_request (struct input_event *event, int format, unsigned char *data, int size, Atom type) |
ede4db72 RS |
608 | { |
609 | XSelectionEvent reply; | |
610 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 611 | Window window = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
612 | int bytes_remaining; |
613 | int format_bytes = format/8; | |
614 | int max_bytes = SELECTION_QUANTUM (display); | |
5c3a351a | 615 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
9ba8e10d | 616 | int count = SPECPDL_INDEX (); |
ede4db72 RS |
617 | |
618 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
619 | max_bytes = MAX_SELECTION_QUANTUM; | |
620 | ||
621 | reply.type = SelectionNotify; | |
622 | reply.display = display; | |
5d0ba25b | 623 | reply.requestor = window; |
ede4db72 RS |
624 | reply.selection = SELECTION_EVENT_SELECTION (event); |
625 | reply.time = SELECTION_EVENT_TIME (event); | |
626 | reply.target = SELECTION_EVENT_TARGET (event); | |
627 | reply.property = SELECTION_EVENT_PROPERTY (event); | |
628 | if (reply.property == None) | |
629 | reply.property = reply.target; | |
630 | ||
afe1529d | 631 | BLOCK_INPUT; |
c525d842 CY |
632 | /* The protected block contains wait_for_property_change, which can |
633 | run random lisp code (process handlers) or signal. Therefore, we | |
634 | put the x_uncatch_errors call in an unwind. */ | |
635 | record_unwind_protect (x_catch_errors_unwind, Qnil); | |
9ba8e10d | 636 | x_catch_errors (display); |
ede4db72 | 637 | |
9c3ad9e1 JD |
638 | #ifdef TRACE_SELECTION |
639 | { | |
9c3ad9e1 JD |
640 | char *sel = XGetAtomName (display, reply.selection); |
641 | char *tgt = XGetAtomName (display, reply.target); | |
ca7af97a | 642 | TRACE3 ("%s, target %s (%d)", sel, tgt, ++x_reply_selection_request_cnt); |
9c3ad9e1 JD |
643 | if (sel) XFree (sel); |
644 | if (tgt) XFree (tgt); | |
645 | } | |
646 | #endif /* TRACE_SELECTION */ | |
647 | ||
ede4db72 RS |
648 | /* Store the data on the requested property. |
649 | If the selection is large, only store the first N bytes of it. | |
650 | */ | |
651 | bytes_remaining = size * format_bytes; | |
652 | if (bytes_remaining <= max_bytes) | |
653 | { | |
654 | /* Send all the data at once, with minimal handshaking. */ | |
d9c0d4a3 | 655 | TRACE1 ("Sending all %d bytes", bytes_remaining); |
ede4db72 RS |
656 | XChangeProperty (display, window, reply.property, type, format, |
657 | PropModeReplace, data, size); | |
658 | /* At this point, the selection was successfully stored; ack it. */ | |
2f65feb6 | 659 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
ede4db72 RS |
660 | } |
661 | else | |
662 | { | |
663 | /* Send an INCR selection. */ | |
d1f21a66 | 664 | struct prop_location *wait_object; |
afe1529d | 665 | int had_errors; |
55b2d45d | 666 | Lisp_Object frame; |
ede4db72 | 667 | |
55b2d45d RS |
668 | frame = some_frame_on_display (dpyinfo); |
669 | ||
670 | /* If the display no longer has frames, we can't expect | |
671 | to get many more selection requests from it, so don't | |
672 | bother trying to queue them. */ | |
673 | if (!NILP (frame)) | |
674 | { | |
dd0fe424 | 675 | x_start_queuing_selection_requests (); |
55b2d45d RS |
676 | |
677 | record_unwind_protect (queue_selection_requests_unwind, | |
dd0fe424 | 678 | Qnil); |
55b2d45d | 679 | } |
2f65feb6 | 680 | |
19126e11 | 681 | if (x_window_to_frame (dpyinfo, window)) /* #### debug */ |
606140dd | 682 | error ("Attempt to transfer an INCR to ourself!"); |
1b65481e | 683 | |
d9c0d4a3 GM |
684 | TRACE2 ("Start sending %d bytes incrementally (%s)", |
685 | bytes_remaining, XGetAtomName (display, reply.property)); | |
d1f21a66 RS |
686 | wait_object = expect_property_change (display, window, reply.property, |
687 | PropertyDelete); | |
ede4db72 | 688 | |
d9c0d4a3 GM |
689 | TRACE1 ("Set %s to number of bytes to send", |
690 | XGetAtomName (display, reply.property)); | |
e22cf39c JD |
691 | { |
692 | /* XChangeProperty expects an array of long even if long is more than | |
693 | 32 bits. */ | |
694 | long value[1]; | |
695 | ||
696 | value[0] = bytes_remaining; | |
697 | XChangeProperty (display, window, reply.property, dpyinfo->Xatom_INCR, | |
698 | 32, PropModeReplace, | |
699 | (unsigned char *) value, 1); | |
700 | } | |
701 | ||
ede4db72 | 702 | XSelectInput (display, window, PropertyChangeMask); |
1b65481e | 703 | |
ede4db72 | 704 | /* Tell 'em the INCR data is there... */ |
d9c0d4a3 | 705 | TRACE0 ("Send SelectionNotify event"); |
55b2d45d | 706 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
5c3a351a | 707 | XFlush (display); |
afe1529d RS |
708 | |
709 | had_errors = x_had_errors_p (display); | |
2f65feb6 | 710 | UNBLOCK_INPUT; |
ede4db72 | 711 | |
2a1a4c9d | 712 | /* First, wait for the requester to ack by deleting the property. |
ede4db72 | 713 | This can run random lisp code (process handlers) or signal. */ |
afe1529d | 714 | if (! had_errors) |
d9c0d4a3 GM |
715 | { |
716 | TRACE1 ("Waiting for ACK (deletion of %s)", | |
717 | XGetAtomName (display, reply.property)); | |
718 | wait_for_property_change (wait_object); | |
719 | } | |
dd0fe424 KS |
720 | else |
721 | unexpect_property_change (wait_object); | |
ede4db72 | 722 | |
d9c0d4a3 | 723 | TRACE0 ("Got ACK"); |
ede4db72 RS |
724 | while (bytes_remaining) |
725 | { | |
e22cf39c JD |
726 | int i = ((bytes_remaining < max_bytes) |
727 | ? bytes_remaining | |
5a9c35e5 | 728 | : max_bytes) / format_bytes; |
2f65feb6 RS |
729 | |
730 | BLOCK_INPUT; | |
731 | ||
d1f21a66 RS |
732 | wait_object |
733 | = expect_property_change (display, window, reply.property, | |
734 | PropertyDelete); | |
d9c0d4a3 | 735 | |
5a9c35e5 | 736 | TRACE1 ("Sending increment of %d elements", i); |
d9c0d4a3 GM |
737 | TRACE1 ("Set %s to increment data", |
738 | XGetAtomName (display, reply.property)); | |
1b65481e | 739 | |
ede4db72 RS |
740 | /* Append the next chunk of data to the property. */ |
741 | XChangeProperty (display, window, reply.property, type, format, | |
5a9c35e5 AS |
742 | PropModeAppend, data, i); |
743 | bytes_remaining -= i * format_bytes; | |
744 | if (format == 32) | |
745 | data += i * sizeof (long); | |
746 | else | |
747 | data += i * format_bytes; | |
5c3a351a | 748 | XFlush (display); |
afe1529d | 749 | had_errors = x_had_errors_p (display); |
2f65feb6 | 750 | UNBLOCK_INPUT; |
ede4db72 | 751 | |
afe1529d RS |
752 | if (had_errors) |
753 | break; | |
754 | ||
2a1a4c9d | 755 | /* Now wait for the requester to ack this chunk by deleting the |
db9cd97a | 756 | property. This can run random lisp code or signal. */ |
d9c0d4a3 GM |
757 | TRACE1 ("Waiting for increment ACK (deletion of %s)", |
758 | XGetAtomName (display, reply.property)); | |
d1f21a66 | 759 | wait_for_property_change (wait_object); |
ede4db72 | 760 | } |
1b65481e | 761 | |
d9c0d4a3 GM |
762 | /* Now write a zero-length chunk to the property to tell the |
763 | requester that we're done. */ | |
2f65feb6 | 764 | BLOCK_INPUT; |
ede4db72 RS |
765 | if (! waiting_for_other_props_on_window (display, window)) |
766 | XSelectInput (display, window, 0L); | |
767 | ||
d9c0d4a3 GM |
768 | TRACE1 ("Set %s to a 0-length chunk to indicate EOF", |
769 | XGetAtomName (display, reply.property)); | |
ede4db72 RS |
770 | XChangeProperty (display, window, reply.property, type, format, |
771 | PropModeReplace, data, 0); | |
d9c0d4a3 | 772 | TRACE0 ("Done sending incrementally"); |
ede4db72 | 773 | } |
afe1529d | 774 | |
ceabd272 | 775 | /* rms, 2003-01-03: I think I have fixed this bug. */ |
47a6ac17 GM |
776 | /* The window we're communicating with may have been deleted |
777 | in the meantime (that's a real situation from a bug report). | |
778 | In this case, there may be events in the event queue still | |
779 | refering to the deleted window, and we'll get a BadWindow error | |
780 | in XTread_socket when processing the events. I don't have | |
781 | an idea how to fix that. gerd, 2001-01-98. */ | |
844fc085 JD |
782 | /* 2004-09-10: XSync and UNBLOCK so that possible protocol errors are |
783 | delivered before uncatch errors. */ | |
784 | XSync (display, False); | |
afe1529d | 785 | UNBLOCK_INPUT; |
0608b1a0 JD |
786 | |
787 | /* GTK queues events in addition to the queue in Xlib. So we | |
788 | UNBLOCK to enter the event loop and get possible errors delivered, | |
789 | and then BLOCK again because x_uncatch_errors requires it. */ | |
790 | BLOCK_INPUT; | |
c525d842 | 791 | /* This calls x_uncatch_errors. */ |
9ba8e10d | 792 | unbind_to (count, Qnil); |
afe1529d | 793 | UNBLOCK_INPUT; |
ede4db72 RS |
794 | } |
795 | \f | |
796 | /* Handle a SelectionRequest event EVENT. | |
797 | This is called from keyboard.c when such an event is found in the queue. */ | |
798 | ||
dd0fe424 | 799 | static void |
971de7fb | 800 | x_handle_selection_request (struct input_event *event) |
ede4db72 RS |
801 | { |
802 | struct gcpro gcpro1, gcpro2, gcpro3; | |
9d2d1dd8 | 803 | Lisp_Object local_selection_data; |
ede4db72 | 804 | Lisp_Object selection_symbol; |
9d2d1dd8 KH |
805 | Lisp_Object target_symbol; |
806 | Lisp_Object converted_selection; | |
ede4db72 | 807 | Time local_selection_time; |
9d2d1dd8 | 808 | Lisp_Object successful_p; |
ede4db72 | 809 | int count; |
5c3a351a RS |
810 | struct x_display_info *dpyinfo |
811 | = x_display_info_for_display (SELECTION_EVENT_DISPLAY (event)); | |
ede4db72 | 812 | |
678b3958 KS |
813 | TRACE2 ("x_handle_selection_request, from=0x%08lx time=%lu", |
814 | (unsigned long) SELECTION_EVENT_REQUESTOR (event), | |
815 | (unsigned long) SELECTION_EVENT_TIME (event)); | |
dd0fe424 | 816 | |
9d2d1dd8 KH |
817 | local_selection_data = Qnil; |
818 | target_symbol = Qnil; | |
819 | converted_selection = Qnil; | |
820 | successful_p = Qnil; | |
821 | ||
ede4db72 RS |
822 | GCPRO3 (local_selection_data, converted_selection, target_symbol); |
823 | ||
d9c0d4a3 | 824 | selection_symbol = x_atom_to_symbol (SELECTION_EVENT_DISPLAY (event), |
ede4db72 RS |
825 | SELECTION_EVENT_SELECTION (event)); |
826 | ||
827 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
ede4db72 RS |
828 | |
829 | if (NILP (local_selection_data)) | |
830 | { | |
831 | /* Someone asked for the selection, but we don't have it any more. | |
832 | */ | |
833 | x_decline_selection_request (event); | |
834 | goto DONE; | |
835 | } | |
836 | ||
837 | local_selection_time = (Time) | |
8e713be6 | 838 | cons_to_long (XCAR (XCDR (XCDR (local_selection_data)))); |
ede4db72 RS |
839 | |
840 | if (SELECTION_EVENT_TIME (event) != CurrentTime | |
7da64e5c | 841 | && local_selection_time > SELECTION_EVENT_TIME (event)) |
ede4db72 RS |
842 | { |
843 | /* Someone asked for the selection, and we have one, but not the one | |
844 | they're looking for. | |
845 | */ | |
846 | x_decline_selection_request (event); | |
847 | goto DONE; | |
848 | } | |
849 | ||
ede4db72 | 850 | x_selection_current_request = event; |
331379bf | 851 | count = SPECPDL_INDEX (); |
ca29f2b8 | 852 | selection_request_dpyinfo = dpyinfo; |
ede4db72 RS |
853 | record_unwind_protect (x_selection_request_lisp_error, Qnil); |
854 | ||
d9c0d4a3 | 855 | target_symbol = x_atom_to_symbol (SELECTION_EVENT_DISPLAY (event), |
ede4db72 RS |
856 | SELECTION_EVENT_TARGET (event)); |
857 | ||
858 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
859 | if (EQ (target_symbol, QMULTIPLE)) | |
860 | target_symbol = fetch_multiple_target (event); | |
861 | #endif | |
1b65481e | 862 | |
ede4db72 | 863 | /* Convert lisp objects back into binary data */ |
1b65481e | 864 | |
ede4db72 | 865 | converted_selection |
5109c8dd | 866 | = x_get_local_selection (selection_symbol, target_symbol, 0); |
1b65481e | 867 | |
ede4db72 RS |
868 | if (! NILP (converted_selection)) |
869 | { | |
870 | unsigned char *data; | |
871 | unsigned int size; | |
872 | int format; | |
873 | Atom type; | |
aca39f42 RS |
874 | int nofree; |
875 | ||
866f8518 JD |
876 | if (CONSP (converted_selection) && NILP (XCDR (converted_selection))) |
877 | { | |
878 | x_decline_selection_request (event); | |
879 | goto DONE2; | |
880 | } | |
881 | ||
2f65feb6 RS |
882 | lisp_data_to_selection_data (SELECTION_EVENT_DISPLAY (event), |
883 | converted_selection, | |
aca39f42 | 884 | &data, &type, &size, &format, &nofree); |
1b65481e | 885 | |
ede4db72 RS |
886 | x_reply_selection_request (event, format, data, size, type); |
887 | successful_p = Qt; | |
888 | ||
889 | /* Indicate we have successfully processed this event. */ | |
7da64e5c | 890 | x_selection_current_request = 0; |
ede4db72 | 891 | |
4feb31b2 | 892 | /* Use xfree, not XFree, because lisp_data_to_selection_data |
0158abbc | 893 | calls xmalloc itself. */ |
aca39f42 | 894 | if (!nofree) |
4feb31b2 | 895 | xfree (data); |
ede4db72 | 896 | } |
866f8518 JD |
897 | |
898 | DONE2: | |
ede4db72 RS |
899 | unbind_to (count, Qnil); |
900 | ||
901 | DONE: | |
902 | ||
ede4db72 RS |
903 | /* Let random lisp code notice that the selection has been asked for. */ |
904 | { | |
9d2d1dd8 | 905 | Lisp_Object rest; |
c917a8de | 906 | rest = Vx_sent_selection_functions; |
ede4db72 RS |
907 | if (!EQ (rest, Qunbound)) |
908 | for (; CONSP (rest); rest = Fcdr (rest)) | |
909 | call3 (Fcar (rest), selection_symbol, target_symbol, successful_p); | |
910 | } | |
4f06187f RS |
911 | |
912 | UNGCPRO; | |
ede4db72 RS |
913 | } |
914 | \f | |
e18e6130 | 915 | /* Handle a SelectionClear event EVENT, which indicates that some |
ede4db72 RS |
916 | client cleared out our previously asserted selection. |
917 | This is called from keyboard.c when such an event is found in the queue. */ | |
918 | ||
dd0fe424 | 919 | static void |
971de7fb | 920 | x_handle_selection_clear (struct input_event *event) |
ede4db72 RS |
921 | { |
922 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
923 | Atom selection = SELECTION_EVENT_SELECTION (event); | |
924 | Time changed_owner_time = SELECTION_EVENT_TIME (event); | |
1b65481e | 925 | |
ede4db72 RS |
926 | Lisp_Object selection_symbol, local_selection_data; |
927 | Time local_selection_time; | |
5c3a351a | 928 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
e18e6130 RS |
929 | struct x_display_info *t_dpyinfo; |
930 | ||
dd0fe424 KS |
931 | TRACE0 ("x_handle_selection_clear"); |
932 | ||
e18e6130 RS |
933 | /* If the new selection owner is also Emacs, |
934 | don't clear the new selection. */ | |
935 | BLOCK_INPUT; | |
936 | /* Check each display on the same terminal, | |
937 | to see if this Emacs job now owns the selection | |
938 | through that display. */ | |
939 | for (t_dpyinfo = x_display_list; t_dpyinfo; t_dpyinfo = t_dpyinfo->next) | |
6ed8eeff | 940 | if (t_dpyinfo->terminal->kboard == dpyinfo->terminal->kboard) |
e18e6130 RS |
941 | { |
942 | Window owner_window | |
943 | = XGetSelectionOwner (t_dpyinfo->display, selection); | |
944 | if (x_window_to_frame (t_dpyinfo, owner_window) != 0) | |
945 | { | |
946 | UNBLOCK_INPUT; | |
947 | return; | |
948 | } | |
949 | } | |
950 | UNBLOCK_INPUT; | |
16041401 | 951 | |
d9c0d4a3 | 952 | selection_symbol = x_atom_to_symbol (display, selection); |
ede4db72 RS |
953 | |
954 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
955 | ||
956 | /* Well, we already believe that we don't own it, so that's just fine. */ | |
957 | if (NILP (local_selection_data)) return; | |
958 | ||
959 | local_selection_time = (Time) | |
8e713be6 | 960 | cons_to_long (XCAR (XCDR (XCDR (local_selection_data)))); |
ede4db72 RS |
961 | |
962 | /* This SelectionClear is for a selection that we no longer own, so we can | |
963 | disregard it. (That is, we have reasserted the selection since this | |
964 | request was generated.) */ | |
965 | ||
966 | if (changed_owner_time != CurrentTime | |
967 | && local_selection_time > changed_owner_time) | |
968 | return; | |
969 | ||
970 | /* Otherwise, we're really honest and truly being told to drop it. | |
971 | Don't use Fdelq as that may QUIT;. */ | |
972 | ||
973 | if (EQ (local_selection_data, Fcar (Vselection_alist))) | |
974 | Vselection_alist = Fcdr (Vselection_alist); | |
975 | else | |
976 | { | |
977 | Lisp_Object rest; | |
99784d63 | 978 | for (rest = Vselection_alist; CONSP (rest); rest = XCDR (rest)) |
8e713be6 | 979 | if (EQ (local_selection_data, Fcar (XCDR (rest)))) |
ede4db72 | 980 | { |
f3fbd155 | 981 | XSETCDR (rest, Fcdr (XCDR (rest))); |
ede4db72 RS |
982 | break; |
983 | } | |
984 | } | |
985 | ||
986 | /* Let random lisp code notice that the selection has been stolen. */ | |
987 | ||
988 | { | |
d1f21a66 | 989 | Lisp_Object rest; |
c917a8de | 990 | rest = Vx_lost_selection_functions; |
ede4db72 | 991 | if (!EQ (rest, Qunbound)) |
d1f21a66 RS |
992 | { |
993 | for (; CONSP (rest); rest = Fcdr (rest)) | |
994 | call1 (Fcar (rest), selection_symbol); | |
7c6b2ea4 | 995 | prepare_menu_bars (); |
3007ebfb | 996 | redisplay_preserve_echo_area (20); |
d1f21a66 | 997 | } |
ede4db72 RS |
998 | } |
999 | } | |
1000 | ||
dd0fe424 | 1001 | void |
971de7fb | 1002 | x_handle_selection_event (struct input_event *event) |
dd0fe424 KS |
1003 | { |
1004 | TRACE0 ("x_handle_selection_event"); | |
1005 | ||
1006 | if (event->kind == SELECTION_REQUEST_EVENT) | |
1007 | { | |
1008 | if (x_queue_selection_requests) | |
1009 | x_queue_event (event); | |
1010 | else | |
1011 | x_handle_selection_request (event); | |
1012 | } | |
1013 | else | |
1014 | x_handle_selection_clear (event); | |
1015 | } | |
1016 | ||
1017 | ||
118bd841 RS |
1018 | /* Clear all selections that were made from frame F. |
1019 | We do this when about to delete a frame. */ | |
1020 | ||
1021 | void | |
971de7fb | 1022 | x_clear_frame_selections (FRAME_PTR f) |
118bd841 RS |
1023 | { |
1024 | Lisp_Object frame; | |
1025 | Lisp_Object rest; | |
1026 | ||
90851bbe | 1027 | XSETFRAME (frame, f); |
118bd841 RS |
1028 | |
1029 | /* Otherwise, we're really honest and truly being told to drop it. | |
1030 | Don't use Fdelq as that may QUIT;. */ | |
1031 | ||
0d199f9c RS |
1032 | /* Delete elements from the beginning of Vselection_alist. */ |
1033 | while (!NILP (Vselection_alist) | |
1034 | && EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (Vselection_alist))))))) | |
1035 | { | |
1036 | /* Let random Lisp code notice that the selection has been stolen. */ | |
1037 | Lisp_Object hooks, selection_symbol; | |
1038 | ||
c917a8de | 1039 | hooks = Vx_lost_selection_functions; |
0d199f9c RS |
1040 | selection_symbol = Fcar (Fcar (Vselection_alist)); |
1041 | ||
1042 | if (!EQ (hooks, Qunbound)) | |
1043 | { | |
1044 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
1045 | call1 (Fcar (hooks), selection_symbol); | |
996b804d MB |
1046 | #if 0 /* This can crash when deleting a frame |
1047 | from x_connection_closed. Anyway, it seems unnecessary; | |
1048 | something else should cause a redisplay. */ | |
3007ebfb | 1049 | redisplay_preserve_echo_area (21); |
996b804d | 1050 | #endif |
0d199f9c RS |
1051 | } |
1052 | ||
1053 | Vselection_alist = Fcdr (Vselection_alist); | |
1054 | } | |
1055 | ||
1056 | /* Delete elements after the beginning of Vselection_alist. */ | |
99784d63 | 1057 | for (rest = Vselection_alist; CONSP (rest); rest = XCDR (rest)) |
8e713be6 | 1058 | if (EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (XCDR (rest)))))))) |
118bd841 RS |
1059 | { |
1060 | /* Let random Lisp code notice that the selection has been stolen. */ | |
1061 | Lisp_Object hooks, selection_symbol; | |
1062 | ||
c917a8de | 1063 | hooks = Vx_lost_selection_functions; |
8e713be6 | 1064 | selection_symbol = Fcar (Fcar (XCDR (rest))); |
118bd841 RS |
1065 | |
1066 | if (!EQ (hooks, Qunbound)) | |
1067 | { | |
1068 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
1069 | call1 (Fcar (hooks), selection_symbol); | |
996b804d | 1070 | #if 0 /* See above */ |
3007ebfb | 1071 | redisplay_preserve_echo_area (22); |
996b804d | 1072 | #endif |
118bd841 | 1073 | } |
f3fbd155 | 1074 | XSETCDR (rest, Fcdr (XCDR (rest))); |
118bd841 RS |
1075 | break; |
1076 | } | |
1077 | } | |
ede4db72 | 1078 | \f |
ede4db72 RS |
1079 | /* Nonzero if any properties for DISPLAY and WINDOW |
1080 | are on the list of what we are waiting for. */ | |
1081 | ||
1082 | static int | |
971de7fb | 1083 | waiting_for_other_props_on_window (Display *display, Window window) |
ede4db72 RS |
1084 | { |
1085 | struct prop_location *rest = property_change_wait_list; | |
1086 | while (rest) | |
1087 | if (rest->display == display && rest->window == window) | |
1088 | return 1; | |
1089 | else | |
1090 | rest = rest->next; | |
1091 | return 0; | |
1092 | } | |
1093 | ||
1094 | /* Add an entry to the list of property changes we are waiting for. | |
1095 | DISPLAY, WINDOW, PROPERTY, STATE describe what we will wait for. | |
1096 | The return value is a number that uniquely identifies | |
1097 | this awaited property change. */ | |
1098 | ||
d1f21a66 | 1099 | static struct prop_location * |
971de7fb | 1100 | expect_property_change (Display *display, Window window, Atom property, int state) |
ede4db72 | 1101 | { |
d9c0d4a3 | 1102 | struct prop_location *pl = (struct prop_location *) xmalloc (sizeof *pl); |
2f65feb6 | 1103 | pl->identifier = ++prop_location_identifier; |
ede4db72 RS |
1104 | pl->display = display; |
1105 | pl->window = window; | |
1106 | pl->property = property; | |
1107 | pl->desired_state = state; | |
1108 | pl->next = property_change_wait_list; | |
d1f21a66 | 1109 | pl->arrived = 0; |
ede4db72 | 1110 | property_change_wait_list = pl; |
d1f21a66 | 1111 | return pl; |
ede4db72 RS |
1112 | } |
1113 | ||
1114 | /* Delete an entry from the list of property changes we are waiting for. | |
2f65feb6 | 1115 | IDENTIFIER is the number that uniquely identifies the entry. */ |
ede4db72 RS |
1116 | |
1117 | static void | |
971de7fb | 1118 | unexpect_property_change (struct prop_location *location) |
ede4db72 RS |
1119 | { |
1120 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
1121 | while (rest) | |
1122 | { | |
d1f21a66 | 1123 | if (rest == location) |
ede4db72 RS |
1124 | { |
1125 | if (prev) | |
1126 | prev->next = rest->next; | |
1127 | else | |
1128 | property_change_wait_list = rest->next; | |
4feb31b2 | 1129 | xfree (rest); |
ede4db72 RS |
1130 | return; |
1131 | } | |
1132 | prev = rest; | |
1133 | rest = rest->next; | |
1134 | } | |
1135 | } | |
1136 | ||
2f65feb6 RS |
1137 | /* Remove the property change expectation element for IDENTIFIER. */ |
1138 | ||
1139 | static Lisp_Object | |
971de7fb | 1140 | wait_for_property_change_unwind (Lisp_Object loc) |
2f65feb6 | 1141 | { |
dd0fe424 KS |
1142 | struct prop_location *location = XSAVE_VALUE (loc)->pointer; |
1143 | ||
1144 | unexpect_property_change (location); | |
1145 | if (location == property_change_reply_object) | |
1146 | property_change_reply_object = 0; | |
ab552306 | 1147 | return Qnil; |
2f65feb6 RS |
1148 | } |
1149 | ||
ede4db72 | 1150 | /* Actually wait for a property change. |
2f65feb6 | 1151 | IDENTIFIER should be the value that expect_property_change returned. */ |
ede4db72 RS |
1152 | |
1153 | static void | |
971de7fb | 1154 | wait_for_property_change (struct prop_location *location) |
ede4db72 | 1155 | { |
2f65feb6 | 1156 | int secs, usecs; |
aed13378 | 1157 | int count = SPECPDL_INDEX (); |
d1f21a66 | 1158 | |
dd0fe424 KS |
1159 | if (property_change_reply_object) |
1160 | abort (); | |
2f65feb6 RS |
1161 | |
1162 | /* Make sure to do unexpect_property_change if we quit or err. */ | |
dd0fe424 KS |
1163 | record_unwind_protect (wait_for_property_change_unwind, |
1164 | make_save_value (location, 0)); | |
2f65feb6 | 1165 | |
f3fbd155 | 1166 | XSETCAR (property_change_reply, Qnil); |
afe1529d | 1167 | property_change_reply_object = location; |
dd0fe424 | 1168 | |
afe1529d RS |
1169 | /* If the event we are waiting for arrives beyond here, it will set |
1170 | property_change_reply, because property_change_reply_object says so. */ | |
d1f21a66 RS |
1171 | if (! location->arrived) |
1172 | { | |
d1f21a66 RS |
1173 | secs = x_selection_timeout / 1000; |
1174 | usecs = (x_selection_timeout % 1000) * 1000; | |
d9c0d4a3 | 1175 | TRACE2 (" Waiting %d secs, %d usecs", secs, usecs); |
d64b707c KS |
1176 | wait_reading_process_output (secs, usecs, 0, 0, |
1177 | property_change_reply, NULL, 0); | |
d1f21a66 | 1178 | |
8e713be6 | 1179 | if (NILP (XCAR (property_change_reply))) |
d9c0d4a3 GM |
1180 | { |
1181 | TRACE0 (" Timed out"); | |
1182 | error ("Timed out waiting for property-notify event"); | |
1183 | } | |
d1f21a66 | 1184 | } |
2f65feb6 RS |
1185 | |
1186 | unbind_to (count, Qnil); | |
ede4db72 RS |
1187 | } |
1188 | ||
1189 | /* Called from XTread_socket in response to a PropertyNotify event. */ | |
1190 | ||
1191 | void | |
971de7fb | 1192 | x_handle_property_notify (XPropertyEvent *event) |
ede4db72 RS |
1193 | { |
1194 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
d9c0d4a3 | 1195 | |
ede4db72 RS |
1196 | while (rest) |
1197 | { | |
dd0fe424 KS |
1198 | if (!rest->arrived |
1199 | && rest->property == event->atom | |
ede4db72 RS |
1200 | && rest->window == event->window |
1201 | && rest->display == event->display | |
1202 | && rest->desired_state == event->state) | |
1203 | { | |
d9c0d4a3 GM |
1204 | TRACE2 ("Expected %s of property %s", |
1205 | (event->state == PropertyDelete ? "deletion" : "change"), | |
1206 | XGetAtomName (event->display, event->atom)); | |
ede4db72 | 1207 | |
d1f21a66 RS |
1208 | rest->arrived = 1; |
1209 | ||
ede4db72 RS |
1210 | /* If this is the one wait_for_property_change is waiting for, |
1211 | tell it to wake up. */ | |
d1f21a66 | 1212 | if (rest == property_change_reply_object) |
f3fbd155 | 1213 | XSETCAR (property_change_reply, Qt); |
ede4db72 | 1214 | |
ede4db72 RS |
1215 | return; |
1216 | } | |
1b65481e | 1217 | |
ede4db72 RS |
1218 | prev = rest; |
1219 | rest = rest->next; | |
1220 | } | |
ede4db72 RS |
1221 | } |
1222 | ||
1223 | ||
1224 | \f | |
1225 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1226 | ||
1227 | static Lisp_Object | |
1228 | fetch_multiple_target (event) | |
1229 | XSelectionRequestEvent *event; | |
1230 | { | |
1231 | Display *display = event->display; | |
5d0ba25b | 1232 | Window window = event->requestor; |
ede4db72 RS |
1233 | Atom target = event->target; |
1234 | Atom selection_atom = event->selection; | |
1235 | int result; | |
1236 | ||
1237 | return | |
1238 | Fcons (QMULTIPLE, | |
1239 | x_get_window_property_as_lisp_data (display, window, target, | |
1240 | QMULTIPLE, selection_atom)); | |
1241 | } | |
1242 | ||
1243 | static Lisp_Object | |
1244 | copy_multiple_data (obj) | |
1245 | Lisp_Object obj; | |
1246 | { | |
1247 | Lisp_Object vec; | |
1248 | int i; | |
1249 | int size; | |
1250 | if (CONSP (obj)) | |
8e713be6 | 1251 | return Fcons (XCAR (obj), copy_multiple_data (XCDR (obj))); |
1b65481e | 1252 | |
b7826503 | 1253 | CHECK_VECTOR (obj); |
ede4db72 RS |
1254 | vec = Fmake_vector (size = XVECTOR (obj)->size, Qnil); |
1255 | for (i = 0; i < size; i++) | |
1256 | { | |
1257 | Lisp_Object vec2 = XVECTOR (obj)->contents [i]; | |
b7826503 | 1258 | CHECK_VECTOR (vec2); |
ede4db72 RS |
1259 | if (XVECTOR (vec2)->size != 2) |
1260 | /* ??? Confusing error message */ | |
4d30ce50 | 1261 | signal_error ("Vectors must be of length 2", vec2); |
ede4db72 RS |
1262 | XVECTOR (vec)->contents [i] = Fmake_vector (2, Qnil); |
1263 | XVECTOR (XVECTOR (vec)->contents [i])->contents [0] | |
1264 | = XVECTOR (vec2)->contents [0]; | |
1265 | XVECTOR (XVECTOR (vec)->contents [i])->contents [1] | |
1266 | = XVECTOR (vec2)->contents [1]; | |
1267 | } | |
1268 | return vec; | |
1269 | } | |
1270 | ||
1271 | #endif | |
1272 | ||
1273 | \f | |
1274 | /* Variables for communication with x_handle_selection_notify. */ | |
1275 | static Atom reading_which_selection; | |
1276 | static Lisp_Object reading_selection_reply; | |
1277 | static Window reading_selection_window; | |
1278 | ||
1279 | /* Do protocol to read selection-data from the server. | |
1280 | Converts this to Lisp data and returns it. */ | |
1281 | ||
1282 | static Lisp_Object | |
971de7fb | 1283 | x_get_foreign_selection (Lisp_Object selection_symbol, Lisp_Object target_type, Lisp_Object time_stamp) |
ede4db72 | 1284 | { |
378c33ca | 1285 | struct frame *sf = SELECTED_FRAME (); |
428a555e KL |
1286 | Window requestor_window; |
1287 | Display *display; | |
1288 | struct x_display_info *dpyinfo; | |
5d0ba25b | 1289 | Time requestor_time = last_event_timestamp; |
428a555e KL |
1290 | Atom target_property; |
1291 | Atom selection_atom; | |
ede4db72 | 1292 | Atom type_atom; |
80da0190 | 1293 | int secs, usecs; |
c525d842 | 1294 | int count = SPECPDL_INDEX (); |
55b2d45d | 1295 | Lisp_Object frame; |
ede4db72 | 1296 | |
428a555e KL |
1297 | if (! FRAME_X_P (sf)) |
1298 | return Qnil; | |
1299 | ||
1300 | requestor_window = FRAME_X_WINDOW (sf); | |
1301 | display = FRAME_X_DISPLAY (sf); | |
1302 | dpyinfo = FRAME_X_DISPLAY_INFO (sf); | |
1303 | target_property = dpyinfo->Xatom_EMACS_TMP; | |
1304 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection_symbol); | |
1305 | ||
ede4db72 | 1306 | if (CONSP (target_type)) |
8e713be6 | 1307 | type_atom = symbol_to_x_atom (dpyinfo, display, XCAR (target_type)); |
ede4db72 | 1308 | else |
5c3a351a | 1309 | type_atom = symbol_to_x_atom (dpyinfo, display, target_type); |
ede4db72 | 1310 | |
3a42401d JD |
1311 | if (! NILP (time_stamp)) |
1312 | { | |
1313 | if (CONSP (time_stamp)) | |
1314 | requestor_time = (Time) cons_to_long (time_stamp); | |
1315 | else if (INTEGERP (time_stamp)) | |
1316 | requestor_time = (Time) XUINT (time_stamp); | |
1317 | else if (FLOATP (time_stamp)) | |
ff59904a | 1318 | requestor_time = (Time) XFLOAT_DATA (time_stamp); |
3a42401d JD |
1319 | else |
1320 | error ("TIME_STAMP must be cons or number"); | |
1321 | } | |
1322 | ||
ede4db72 | 1323 | BLOCK_INPUT; |
1b65481e | 1324 | |
c525d842 CY |
1325 | /* The protected block contains wait_reading_process_output, which |
1326 | can run random lisp code (process handlers) or signal. | |
1327 | Therefore, we put the x_uncatch_errors call in an unwind. */ | |
1328 | record_unwind_protect (x_catch_errors_unwind, Qnil); | |
9ba8e10d | 1329 | x_catch_errors (display); |
1b65481e | 1330 | |
d9c0d4a3 GM |
1331 | TRACE2 ("Get selection %s, type %s", |
1332 | XGetAtomName (display, type_atom), | |
1333 | XGetAtomName (display, target_property)); | |
1334 | ||
ede4db72 | 1335 | XConvertSelection (display, selection_atom, type_atom, target_property, |
5d0ba25b | 1336 | requestor_window, requestor_time); |
5c3a351a | 1337 | XFlush (display); |
ede4db72 RS |
1338 | |
1339 | /* Prepare to block until the reply has been read. */ | |
5d0ba25b | 1340 | reading_selection_window = requestor_window; |
ede4db72 | 1341 | reading_which_selection = selection_atom; |
f3fbd155 | 1342 | XSETCAR (reading_selection_reply, Qnil); |
55b2d45d RS |
1343 | |
1344 | frame = some_frame_on_display (dpyinfo); | |
1345 | ||
1346 | /* If the display no longer has frames, we can't expect | |
1347 | to get many more selection requests from it, so don't | |
1348 | bother trying to queue them. */ | |
1349 | if (!NILP (frame)) | |
1350 | { | |
dd0fe424 | 1351 | x_start_queuing_selection_requests (); |
55b2d45d RS |
1352 | |
1353 | record_unwind_protect (queue_selection_requests_unwind, | |
dd0fe424 | 1354 | Qnil); |
55b2d45d | 1355 | } |
ede4db72 RS |
1356 | UNBLOCK_INPUT; |
1357 | ||
80da0190 RS |
1358 | /* This allows quits. Also, don't wait forever. */ |
1359 | secs = x_selection_timeout / 1000; | |
1360 | usecs = (x_selection_timeout % 1000) * 1000; | |
d9c0d4a3 | 1361 | TRACE1 (" Start waiting %d secs for SelectionNotify", secs); |
d64b707c KS |
1362 | wait_reading_process_output (secs, usecs, 0, 0, |
1363 | reading_selection_reply, NULL, 0); | |
d9c0d4a3 | 1364 | TRACE1 (" Got event = %d", !NILP (XCAR (reading_selection_reply))); |
ede4db72 | 1365 | |
7c6b2ea4 | 1366 | BLOCK_INPUT; |
c525d842 CY |
1367 | if (x_had_errors_p (display)) |
1368 | error ("Cannot get selection"); | |
1369 | /* This calls x_uncatch_errors. */ | |
9ba8e10d | 1370 | unbind_to (count, Qnil); |
7c6b2ea4 RS |
1371 | UNBLOCK_INPUT; |
1372 | ||
8e713be6 | 1373 | if (NILP (XCAR (reading_selection_reply))) |
606140dd | 1374 | error ("Timed out waiting for reply from selection owner"); |
8e713be6 | 1375 | if (EQ (XCAR (reading_selection_reply), Qlambda)) |
12061f06 | 1376 | return Qnil; |
ede4db72 RS |
1377 | |
1378 | /* Otherwise, the selection is waiting for us on the requested property. */ | |
1379 | return | |
5d0ba25b | 1380 | x_get_window_property_as_lisp_data (display, requestor_window, |
ede4db72 RS |
1381 | target_property, target_type, |
1382 | selection_atom); | |
1383 | } | |
1384 | \f | |
1385 | /* Subroutines of x_get_window_property_as_lisp_data */ | |
1386 | ||
4feb31b2 | 1387 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1388 | |
ede4db72 | 1389 | static void |
d5a3eaaf AS |
1390 | x_get_window_property (Display *display, Window window, Atom property, |
1391 | unsigned char **data_ret, int *bytes_ret, | |
1392 | Atom *actual_type_ret, int *actual_format_ret, | |
1393 | unsigned long *actual_size_ret, int delete_p) | |
ede4db72 RS |
1394 | { |
1395 | int total_size; | |
1396 | unsigned long bytes_remaining; | |
1397 | int offset = 0; | |
1398 | unsigned char *tmp_data = 0; | |
1399 | int result; | |
1400 | int buffer_size = SELECTION_QUANTUM (display); | |
1b65481e | 1401 | |
d9c0d4a3 GM |
1402 | if (buffer_size > MAX_SELECTION_QUANTUM) |
1403 | buffer_size = MAX_SELECTION_QUANTUM; | |
1b65481e | 1404 | |
ede4db72 | 1405 | BLOCK_INPUT; |
1b65481e | 1406 | |
ede4db72 RS |
1407 | /* First probe the thing to find out how big it is. */ |
1408 | result = XGetWindowProperty (display, window, property, | |
137edb72 | 1409 | 0L, 0L, False, AnyPropertyType, |
ede4db72 RS |
1410 | actual_type_ret, actual_format_ret, |
1411 | actual_size_ret, | |
1412 | &bytes_remaining, &tmp_data); | |
ede4db72 RS |
1413 | if (result != Success) |
1414 | { | |
2f65feb6 | 1415 | UNBLOCK_INPUT; |
ede4db72 RS |
1416 | *data_ret = 0; |
1417 | *bytes_ret = 0; | |
1418 | return; | |
1419 | } | |
1b65481e | 1420 | |
0158abbc RS |
1421 | /* This was allocated by Xlib, so use XFree. */ |
1422 | XFree ((char *) tmp_data); | |
1b65481e | 1423 | |
ede4db72 RS |
1424 | if (*actual_type_ret == None || *actual_format_ret == 0) |
1425 | { | |
2f65feb6 | 1426 | UNBLOCK_INPUT; |
ede4db72 RS |
1427 | return; |
1428 | } | |
1429 | ||
1430 | total_size = bytes_remaining + 1; | |
1431 | *data_ret = (unsigned char *) xmalloc (total_size); | |
1b65481e | 1432 | |
2a1a4c9d | 1433 | /* Now read, until we've gotten it all. */ |
ede4db72 RS |
1434 | while (bytes_remaining) |
1435 | { | |
d9c0d4a3 | 1436 | #ifdef TRACE_SELECTION |
ede4db72 RS |
1437 | int last = bytes_remaining; |
1438 | #endif | |
1439 | result | |
1440 | = XGetWindowProperty (display, window, property, | |
137edb72 | 1441 | (long)offset/4, (long)buffer_size/4, |
2f65feb6 | 1442 | False, |
ede4db72 RS |
1443 | AnyPropertyType, |
1444 | actual_type_ret, actual_format_ret, | |
1445 | actual_size_ret, &bytes_remaining, &tmp_data); | |
d9c0d4a3 GM |
1446 | |
1447 | TRACE2 ("Read %ld bytes from property %s", | |
1448 | last - bytes_remaining, | |
1449 | XGetAtomName (display, property)); | |
1450 | ||
ede4db72 RS |
1451 | /* If this doesn't return Success at this point, it means that |
1452 | some clod deleted the selection while we were in the midst of | |
d9c0d4a3 GM |
1453 | reading it. Deal with that, I guess.... */ |
1454 | if (result != Success) | |
1455 | break; | |
e22cf39c JD |
1456 | |
1457 | /* The man page for XGetWindowProperty says: | |
1458 | "If the returned format is 32, the returned data is represented | |
1459 | as a long array and should be cast to that type to obtain the | |
1460 | elements." | |
1461 | This applies even if long is more than 32 bits, the X library | |
1462 | converts from 32 bit elements received from the X server to long | |
72af86bd | 1463 | and passes the long array to us. Thus, for that case memcpy can not |
e22cf39c JD |
1464 | be used. We convert to a 32 bit type here, because so much code |
1465 | assume on that. | |
1466 | ||
1467 | The bytes and offsets passed to XGetWindowProperty refers to the | |
1468 | property and those are indeed in 32 bit quantities if format is 32. */ | |
1469 | ||
1470 | if (*actual_format_ret == 32 && *actual_format_ret < BITS_PER_LONG) | |
1471 | { | |
1472 | unsigned long i; | |
1473 | int *idata = (int *) ((*data_ret) + offset); | |
1474 | long *ldata = (long *) tmp_data; | |
1475 | ||
1476 | for (i = 0; i < *actual_size_ret; ++i) | |
1477 | { | |
1478 | idata[i]= (int) ldata[i]; | |
1479 | offset += 4; | |
1480 | } | |
1481 | } | |
1482 | else | |
1483 | { | |
1484 | *actual_size_ret *= *actual_format_ret / 8; | |
72af86bd | 1485 | memcpy ((*data_ret) + offset, tmp_data, *actual_size_ret); |
e22cf39c JD |
1486 | offset += *actual_size_ret; |
1487 | } | |
1b65481e | 1488 | |
0158abbc RS |
1489 | /* This was allocated by Xlib, so use XFree. */ |
1490 | XFree ((char *) tmp_data); | |
ede4db72 | 1491 | } |
2f65feb6 | 1492 | |
5c3a351a | 1493 | XFlush (display); |
ede4db72 RS |
1494 | UNBLOCK_INPUT; |
1495 | *bytes_ret = offset; | |
1496 | } | |
1497 | \f | |
4feb31b2 | 1498 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1499 | |
ede4db72 | 1500 | static void |
d5a3eaaf AS |
1501 | receive_incremental_selection (Display *display, Window window, Atom property, |
1502 | Lisp_Object target_type, | |
1503 | unsigned int min_size_bytes, | |
1504 | unsigned char **data_ret, int *size_bytes_ret, | |
1505 | Atom *type_ret, int *format_ret, | |
1506 | unsigned long *size_ret) | |
ede4db72 RS |
1507 | { |
1508 | int offset = 0; | |
d1f21a66 | 1509 | struct prop_location *wait_object; |
ede4db72 RS |
1510 | *size_bytes_ret = min_size_bytes; |
1511 | *data_ret = (unsigned char *) xmalloc (*size_bytes_ret); | |
d9c0d4a3 GM |
1512 | |
1513 | TRACE1 ("Read %d bytes incrementally", min_size_bytes); | |
2f65feb6 RS |
1514 | |
1515 | /* At this point, we have read an INCR property. | |
1516 | Delete the property to ack it. | |
1517 | (But first, prepare to receive the next event in this handshake.) | |
ede4db72 RS |
1518 | |
1519 | Now, we must loop, waiting for the sending window to put a value on | |
1520 | that property, then reading the property, then deleting it to ack. | |
1521 | We are done when the sender places a property of length 0. | |
1522 | */ | |
2f65feb6 RS |
1523 | BLOCK_INPUT; |
1524 | XSelectInput (display, window, STANDARD_EVENT_SET | PropertyChangeMask); | |
d9c0d4a3 | 1525 | TRACE1 (" Delete property %s", |
dd0fe424 | 1526 | SDATA (SYMBOL_NAME (x_atom_to_symbol (display, property)))); |
2f65feb6 | 1527 | XDeleteProperty (display, window, property); |
d9c0d4a3 | 1528 | TRACE1 (" Expect new value of property %s", |
dd0fe424 | 1529 | SDATA (SYMBOL_NAME (x_atom_to_symbol (display, property)))); |
d1f21a66 RS |
1530 | wait_object = expect_property_change (display, window, property, |
1531 | PropertyNewValue); | |
5c3a351a | 1532 | XFlush (display); |
2f65feb6 RS |
1533 | UNBLOCK_INPUT; |
1534 | ||
ede4db72 RS |
1535 | while (1) |
1536 | { | |
1537 | unsigned char *tmp_data; | |
1538 | int tmp_size_bytes; | |
d9c0d4a3 GM |
1539 | |
1540 | TRACE0 (" Wait for property change"); | |
d1f21a66 | 1541 | wait_for_property_change (wait_object); |
1b65481e | 1542 | |
ede4db72 | 1543 | /* expect it again immediately, because x_get_window_property may |
2a1a4c9d | 1544 | .. no it won't, I don't get it. |
d9c0d4a3 GM |
1545 | .. Ok, I get it now, the Xt code that implements INCR is broken. */ |
1546 | TRACE0 (" Get property value"); | |
ede4db72 RS |
1547 | x_get_window_property (display, window, property, |
1548 | &tmp_data, &tmp_size_bytes, | |
1549 | type_ret, format_ret, size_ret, 1); | |
1550 | ||
d9c0d4a3 GM |
1551 | TRACE1 (" Read increment of %d bytes", tmp_size_bytes); |
1552 | ||
ede4db72 RS |
1553 | if (tmp_size_bytes == 0) /* we're done */ |
1554 | { | |
d9c0d4a3 GM |
1555 | TRACE0 ("Done reading incrementally"); |
1556 | ||
2f65feb6 RS |
1557 | if (! waiting_for_other_props_on_window (display, window)) |
1558 | XSelectInput (display, window, STANDARD_EVENT_SET); | |
4feb31b2 | 1559 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1560 | calls xmalloc itself. */ |
70fdbb46 | 1561 | xfree (tmp_data); |
ede4db72 RS |
1562 | break; |
1563 | } | |
2f65feb6 RS |
1564 | |
1565 | BLOCK_INPUT; | |
d9c0d4a3 GM |
1566 | TRACE1 (" ACK by deleting property %s", |
1567 | XGetAtomName (display, property)); | |
2f65feb6 | 1568 | XDeleteProperty (display, window, property); |
d1f21a66 RS |
1569 | wait_object = expect_property_change (display, window, property, |
1570 | PropertyNewValue); | |
5c3a351a | 1571 | XFlush (display); |
2f65feb6 RS |
1572 | UNBLOCK_INPUT; |
1573 | ||
ede4db72 RS |
1574 | if (*size_bytes_ret < offset + tmp_size_bytes) |
1575 | { | |
ede4db72 RS |
1576 | *size_bytes_ret = offset + tmp_size_bytes; |
1577 | *data_ret = (unsigned char *) xrealloc (*data_ret, *size_bytes_ret); | |
1578 | } | |
1b65481e | 1579 | |
72af86bd | 1580 | memcpy ((*data_ret) + offset, tmp_data, tmp_size_bytes); |
ede4db72 | 1581 | offset += tmp_size_bytes; |
1b65481e | 1582 | |
4feb31b2 | 1583 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1584 | calls xmalloc itself. */ |
4feb31b2 | 1585 | xfree (tmp_data); |
ede4db72 RS |
1586 | } |
1587 | } | |
d9c0d4a3 | 1588 | |
ede4db72 RS |
1589 | \f |
1590 | /* Once a requested selection is "ready" (we got a SelectionNotify event), | |
1591 | fetch value from property PROPERTY of X window WINDOW on display DISPLAY. | |
1592 | TARGET_TYPE and SELECTION_ATOM are used in error message if this fails. */ | |
1593 | ||
1594 | static Lisp_Object | |
d5a3eaaf AS |
1595 | x_get_window_property_as_lisp_data (Display *display, Window window, |
1596 | Atom property, | |
1597 | Lisp_Object target_type, | |
1598 | Atom selection_atom) | |
ede4db72 RS |
1599 | { |
1600 | Atom actual_type; | |
1601 | int actual_format; | |
1602 | unsigned long actual_size; | |
1603 | unsigned char *data = 0; | |
1604 | int bytes = 0; | |
1605 | Lisp_Object val; | |
5c3a351a | 1606 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1607 | |
d9c0d4a3 GM |
1608 | TRACE0 ("Reading selection data"); |
1609 | ||
ede4db72 RS |
1610 | x_get_window_property (display, window, property, &data, &bytes, |
1611 | &actual_type, &actual_format, &actual_size, 1); | |
1612 | if (! data) | |
1613 | { | |
1614 | int there_is_a_selection_owner; | |
1615 | BLOCK_INPUT; | |
1616 | there_is_a_selection_owner | |
1617 | = XGetSelectionOwner (display, selection_atom); | |
1618 | UNBLOCK_INPUT; | |
4d30ce50 KS |
1619 | if (there_is_a_selection_owner) |
1620 | signal_error ("Selection owner couldn't convert", | |
1621 | actual_type | |
1622 | ? list2 (target_type, | |
1623 | x_atom_to_symbol (display, actual_type)) | |
1624 | : target_type); | |
1625 | else | |
1626 | signal_error ("No selection", | |
1627 | x_atom_to_symbol (display, selection_atom)); | |
ede4db72 | 1628 | } |
1b65481e | 1629 | |
5c3a351a | 1630 | if (actual_type == dpyinfo->Xatom_INCR) |
ede4db72 RS |
1631 | { |
1632 | /* That wasn't really the data, just the beginning. */ | |
1633 | ||
1634 | unsigned int min_size_bytes = * ((unsigned int *) data); | |
1635 | BLOCK_INPUT; | |
4feb31b2 | 1636 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1637 | calls xmalloc itself. */ |
4feb31b2 | 1638 | xfree ((char *) data); |
ede4db72 RS |
1639 | UNBLOCK_INPUT; |
1640 | receive_incremental_selection (display, window, property, target_type, | |
1641 | min_size_bytes, &data, &bytes, | |
1642 | &actual_type, &actual_format, | |
1643 | &actual_size); | |
1644 | } | |
1645 | ||
2f65feb6 | 1646 | BLOCK_INPUT; |
d9c0d4a3 | 1647 | TRACE1 (" Delete property %s", XGetAtomName (display, property)); |
2f65feb6 | 1648 | XDeleteProperty (display, window, property); |
5c3a351a | 1649 | XFlush (display); |
2f65feb6 RS |
1650 | UNBLOCK_INPUT; |
1651 | ||
ede4db72 RS |
1652 | /* It's been read. Now convert it to a lisp object in some semi-rational |
1653 | manner. */ | |
1654 | val = selection_data_to_lisp_data (display, data, bytes, | |
1655 | actual_type, actual_format); | |
1b65481e | 1656 | |
4feb31b2 | 1657 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1658 | calls xmalloc itself. */ |
4feb31b2 | 1659 | xfree ((char *) data); |
ede4db72 RS |
1660 | return val; |
1661 | } | |
1662 | \f | |
1663 | /* These functions convert from the selection data read from the server into | |
1664 | something that we can use from Lisp, and vice versa. | |
1665 | ||
1666 | Type: Format: Size: Lisp Type: | |
1667 | ----- ------- ----- ----------- | |
1668 | * 8 * String | |
1669 | ATOM 32 1 Symbol | |
1670 | ATOM 32 > 1 Vector of Symbols | |
1671 | * 16 1 Integer | |
1672 | * 16 > 1 Vector of Integers | |
1673 | * 32 1 if <=16 bits: Integer | |
1674 | if > 16 bits: Cons of top16, bot16 | |
1675 | * 32 > 1 Vector of the above | |
1676 | ||
1677 | When converting a Lisp number to C, it is assumed to be of format 16 if | |
1678 | it is an integer, and of format 32 if it is a cons of two integers. | |
1679 | ||
1680 | When converting a vector of numbers from Lisp to C, it is assumed to be | |
1681 | of format 16 if every element in the vector is an integer, and is assumed | |
1682 | to be of format 32 if any element is a cons of two integers. | |
1683 | ||
1684 | When converting an object to C, it may be of the form (SYMBOL . <data>) | |
1685 | where SYMBOL is what we should claim that the type is. Format and | |
b8d6f4af JD |
1686 | representation are as above. |
1687 | ||
1688 | Important: When format is 32, data should contain an array of int, | |
1689 | not an array of long as the X library returns. This makes a difference | |
1690 | when sizeof(long) != sizeof(int). */ | |
ede4db72 RS |
1691 | |
1692 | ||
1693 | ||
1694 | static Lisp_Object | |
eec47d6b DN |
1695 | selection_data_to_lisp_data (Display *display, const unsigned char *data, |
1696 | int size, Atom type, int format) | |
ede4db72 | 1697 | { |
5c3a351a | 1698 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1699 | |
5c3a351a | 1700 | if (type == dpyinfo->Xatom_NULL) |
ede4db72 RS |
1701 | return QNULL; |
1702 | ||
1703 | /* Convert any 8-bit data to a string, for compactness. */ | |
1704 | else if (format == 8) | |
e6c7c988 | 1705 | { |
e57ad4d8 KH |
1706 | Lisp_Object str, lispy_type; |
1707 | ||
1708 | str = make_unibyte_string ((char *) data, size); | |
1709 | /* Indicate that this string is from foreign selection by a text | |
1710 | property `foreign-selection' so that the caller of | |
1711 | x-get-selection-internal (usually x-get-selection) can know | |
1712 | that the string must be decode. */ | |
1713 | if (type == dpyinfo->Xatom_COMPOUND_TEXT) | |
1714 | lispy_type = QCOMPOUND_TEXT; | |
1715 | else if (type == dpyinfo->Xatom_UTF8_STRING) | |
1716 | lispy_type = QUTF8_STRING; | |
e6c7c988 | 1717 | else |
e57ad4d8 KH |
1718 | lispy_type = QSTRING; |
1719 | Fput_text_property (make_number (0), make_number (size), | |
1720 | Qforeign_selection, lispy_type, str); | |
e6c7c988 KH |
1721 | return str; |
1722 | } | |
ede4db72 RS |
1723 | /* Convert a single atom to a Lisp_Symbol. Convert a set of atoms to |
1724 | a vector of symbols. | |
1725 | */ | |
1726 | else if (type == XA_ATOM) | |
1727 | { | |
1728 | int i; | |
b8d6f4af JD |
1729 | /* On a 64 bit machine sizeof(Atom) == sizeof(long) == 8. |
1730 | But the callers of these function has made sure the data for | |
1731 | format == 32 is an array of int. Thus, use int instead | |
1732 | of Atom. */ | |
1733 | int *idata = (int *) data; | |
1734 | ||
1735 | if (size == sizeof (int)) | |
1736 | return x_atom_to_symbol (display, (Atom) idata[0]); | |
ede4db72 RS |
1737 | else |
1738 | { | |
b8d6f4af | 1739 | Lisp_Object v = Fmake_vector (make_number (size / sizeof (int)), |
e607a484 | 1740 | make_number (0)); |
b8d6f4af | 1741 | for (i = 0; i < size / sizeof (int); i++) |
e607a484 | 1742 | Faset (v, make_number (i), |
b8d6f4af | 1743 | x_atom_to_symbol (display, (Atom) idata[i])); |
ede4db72 RS |
1744 | return v; |
1745 | } | |
1746 | } | |
1747 | ||
1ad08acd RS |
1748 | /* Convert a single 16-bit number or a small 32-bit number to a Lisp_Int. |
1749 | If the number is 32 bits and won't fit in a Lisp_Int, | |
1750 | convert it to a cons of integers, 16 bits in each half. | |
ede4db72 | 1751 | */ |
2f51feb8 AS |
1752 | else if (format == 32 && size == sizeof (int)) |
1753 | return long_to_cons (((unsigned int *) data) [0]); | |
ede4db72 RS |
1754 | else if (format == 16 && size == sizeof (short)) |
1755 | return make_number ((int) (((unsigned short *) data) [0])); | |
1756 | ||
1757 | /* Convert any other kind of data to a vector of numbers, represented | |
1758 | as above (as an integer, or a cons of two 16 bit integers.) | |
1759 | */ | |
1760 | else if (format == 16) | |
1761 | { | |
1762 | int i; | |
937a3875 RS |
1763 | Lisp_Object v; |
1764 | v = Fmake_vector (make_number (size / 2), make_number (0)); | |
1765 | for (i = 0; i < size / 2; i++) | |
ede4db72 RS |
1766 | { |
1767 | int j = (int) ((unsigned short *) data) [i]; | |
e607a484 | 1768 | Faset (v, make_number (i), make_number (j)); |
ede4db72 RS |
1769 | } |
1770 | return v; | |
1771 | } | |
1772 | else | |
1773 | { | |
1774 | int i; | |
e607a484 | 1775 | Lisp_Object v = Fmake_vector (make_number (size / 4), make_number (0)); |
ede4db72 RS |
1776 | for (i = 0; i < size / 4; i++) |
1777 | { | |
2f51feb8 | 1778 | unsigned int j = ((unsigned int *) data) [i]; |
e607a484 | 1779 | Faset (v, make_number (i), long_to_cons (j)); |
ede4db72 RS |
1780 | } |
1781 | return v; | |
1782 | } | |
1783 | } | |
1784 | ||
1785 | ||
4feb31b2 | 1786 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1787 | |
ede4db72 | 1788 | static void |
d5a3eaaf AS |
1789 | lisp_data_to_selection_data (Display *display, Lisp_Object obj, |
1790 | unsigned char **data_ret, Atom *type_ret, | |
1791 | unsigned int *size_ret, | |
1792 | int *format_ret, int *nofree_ret) | |
ede4db72 RS |
1793 | { |
1794 | Lisp_Object type = Qnil; | |
5c3a351a | 1795 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
aca39f42 RS |
1796 | |
1797 | *nofree_ret = 0; | |
1798 | ||
8e713be6 | 1799 | if (CONSP (obj) && SYMBOLP (XCAR (obj))) |
ede4db72 | 1800 | { |
8e713be6 KR |
1801 | type = XCAR (obj); |
1802 | obj = XCDR (obj); | |
1803 | if (CONSP (obj) && NILP (XCDR (obj))) | |
1804 | obj = XCAR (obj); | |
ede4db72 RS |
1805 | } |
1806 | ||
1807 | if (EQ (obj, QNULL) || (EQ (type, QNULL))) | |
1808 | { /* This is not the same as declining */ | |
1809 | *format_ret = 32; | |
1810 | *size_ret = 0; | |
1811 | *data_ret = 0; | |
1812 | type = QNULL; | |
1813 | } | |
1814 | else if (STRINGP (obj)) | |
1815 | { | |
1bd70c6e KH |
1816 | if (SCHARS (obj) < SBYTES (obj)) |
1817 | /* OBJ is a multibyte string containing a non-ASCII char. */ | |
4d30ce50 | 1818 | signal_error ("Non-ASCII string must be encoded in advance", obj); |
7b9ae523 | 1819 | if (NILP (type)) |
5109c8dd KH |
1820 | type = QSTRING; |
1821 | *format_ret = 8; | |
1822 | *size_ret = SBYTES (obj); | |
1823 | *data_ret = SDATA (obj); | |
1824 | *nofree_ret = 1; | |
ede4db72 RS |
1825 | } |
1826 | else if (SYMBOLP (obj)) | |
1827 | { | |
1828 | *format_ret = 32; | |
1829 | *size_ret = 1; | |
1830 | *data_ret = (unsigned char *) xmalloc (sizeof (Atom) + 1); | |
1831 | (*data_ret) [sizeof (Atom)] = 0; | |
5c3a351a | 1832 | (*(Atom **) data_ret) [0] = symbol_to_x_atom (dpyinfo, display, obj); |
ede4db72 RS |
1833 | if (NILP (type)) type = QATOM; |
1834 | } | |
7da64e5c | 1835 | else if (INTEGERP (obj) |
ede4db72 RS |
1836 | && XINT (obj) < 0xFFFF |
1837 | && XINT (obj) > -0xFFFF) | |
1838 | { | |
1839 | *format_ret = 16; | |
1840 | *size_ret = 1; | |
1841 | *data_ret = (unsigned char *) xmalloc (sizeof (short) + 1); | |
1842 | (*data_ret) [sizeof (short)] = 0; | |
1843 | (*(short **) data_ret) [0] = (short) XINT (obj); | |
1844 | if (NILP (type)) type = QINTEGER; | |
1845 | } | |
a87ed99c | 1846 | else if (INTEGERP (obj) |
8e713be6 KR |
1847 | || (CONSP (obj) && INTEGERP (XCAR (obj)) |
1848 | && (INTEGERP (XCDR (obj)) | |
1849 | || (CONSP (XCDR (obj)) | |
1850 | && INTEGERP (XCAR (XCDR (obj))))))) | |
ede4db72 RS |
1851 | { |
1852 | *format_ret = 32; | |
1853 | *size_ret = 1; | |
1854 | *data_ret = (unsigned char *) xmalloc (sizeof (long) + 1); | |
1855 | (*data_ret) [sizeof (long)] = 0; | |
1856 | (*(unsigned long **) data_ret) [0] = cons_to_long (obj); | |
1857 | if (NILP (type)) type = QINTEGER; | |
1858 | } | |
1859 | else if (VECTORP (obj)) | |
1860 | { | |
1861 | /* Lisp_Vectors may represent a set of ATOMs; | |
1862 | a set of 16 or 32 bit INTEGERs; | |
1863 | or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...] | |
1864 | */ | |
1865 | int i; | |
1866 | ||
1867 | if (SYMBOLP (XVECTOR (obj)->contents [0])) | |
1868 | /* This vector is an ATOM set */ | |
1869 | { | |
1870 | if (NILP (type)) type = QATOM; | |
1871 | *size_ret = XVECTOR (obj)->size; | |
1872 | *format_ret = 32; | |
1873 | *data_ret = (unsigned char *) xmalloc ((*size_ret) * sizeof (Atom)); | |
1874 | for (i = 0; i < *size_ret; i++) | |
1875 | if (SYMBOLP (XVECTOR (obj)->contents [i])) | |
1876 | (*(Atom **) data_ret) [i] | |
5c3a351a | 1877 | = symbol_to_x_atom (dpyinfo, display, XVECTOR (obj)->contents [i]); |
ede4db72 | 1878 | else |
4d30ce50 | 1879 | signal_error ("All elements of selection vector must have same type", obj); |
ede4db72 RS |
1880 | } |
1881 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1882 | else if (VECTORP (XVECTOR (obj)->contents [0])) | |
1883 | /* This vector is an ATOM_PAIR set */ | |
1884 | { | |
1885 | if (NILP (type)) type = QATOM_PAIR; | |
1886 | *size_ret = XVECTOR (obj)->size; | |
1887 | *format_ret = 32; | |
1888 | *data_ret = (unsigned char *) | |
1889 | xmalloc ((*size_ret) * sizeof (Atom) * 2); | |
1890 | for (i = 0; i < *size_ret; i++) | |
1891 | if (VECTORP (XVECTOR (obj)->contents [i])) | |
1892 | { | |
1893 | Lisp_Object pair = XVECTOR (obj)->contents [i]; | |
1894 | if (XVECTOR (pair)->size != 2) | |
4d30ce50 KS |
1895 | signal_error ( |
1896 | "Elements of the vector must be vectors of exactly two elements", | |
1897 | pair); | |
1b65481e | 1898 | |
ede4db72 | 1899 | (*(Atom **) data_ret) [i * 2] |
5c3a351a RS |
1900 | = symbol_to_x_atom (dpyinfo, display, |
1901 | XVECTOR (pair)->contents [0]); | |
ede4db72 | 1902 | (*(Atom **) data_ret) [(i * 2) + 1] |
5c3a351a RS |
1903 | = symbol_to_x_atom (dpyinfo, display, |
1904 | XVECTOR (pair)->contents [1]); | |
ede4db72 RS |
1905 | } |
1906 | else | |
4d30ce50 KS |
1907 | signal_error ("All elements of the vector must be of the same type", |
1908 | obj); | |
1b65481e | 1909 | |
ede4db72 RS |
1910 | } |
1911 | #endif | |
1912 | else | |
1913 | /* This vector is an INTEGER set, or something like it */ | |
1914 | { | |
e22cf39c | 1915 | int data_size = 2; |
ede4db72 RS |
1916 | *size_ret = XVECTOR (obj)->size; |
1917 | if (NILP (type)) type = QINTEGER; | |
1918 | *format_ret = 16; | |
1919 | for (i = 0; i < *size_ret; i++) | |
1920 | if (CONSP (XVECTOR (obj)->contents [i])) | |
1921 | *format_ret = 32; | |
7da64e5c | 1922 | else if (!INTEGERP (XVECTOR (obj)->contents [i])) |
4d30ce50 KS |
1923 | signal_error (/* Qselection_error */ |
1924 | "Elements of selection vector must be integers or conses of integers", | |
1925 | obj); | |
ede4db72 | 1926 | |
e22cf39c JD |
1927 | /* Use sizeof(long) even if it is more than 32 bits. See comment |
1928 | in x_get_window_property and x_fill_property_data. */ | |
6e816df5 | 1929 | |
e22cf39c JD |
1930 | if (*format_ret == 32) data_size = sizeof(long); |
1931 | *data_ret = (unsigned char *) xmalloc (*size_ret * data_size); | |
ede4db72 RS |
1932 | for (i = 0; i < *size_ret; i++) |
1933 | if (*format_ret == 32) | |
1934 | (*((unsigned long **) data_ret)) [i] | |
1935 | = cons_to_long (XVECTOR (obj)->contents [i]); | |
1936 | else | |
1937 | (*((unsigned short **) data_ret)) [i] | |
1938 | = (unsigned short) cons_to_long (XVECTOR (obj)->contents [i]); | |
1939 | } | |
1940 | } | |
1941 | else | |
4d30ce50 | 1942 | signal_error (/* Qselection_error */ "Unrecognized selection data", obj); |
ede4db72 | 1943 | |
5c3a351a | 1944 | *type_ret = symbol_to_x_atom (dpyinfo, display, type); |
ede4db72 RS |
1945 | } |
1946 | ||
1947 | static Lisp_Object | |
971de7fb | 1948 | clean_local_selection_data (Lisp_Object obj) |
ede4db72 RS |
1949 | { |
1950 | if (CONSP (obj) | |
8e713be6 KR |
1951 | && INTEGERP (XCAR (obj)) |
1952 | && CONSP (XCDR (obj)) | |
1953 | && INTEGERP (XCAR (XCDR (obj))) | |
1954 | && NILP (XCDR (XCDR (obj)))) | |
1955 | obj = Fcons (XCAR (obj), XCDR (obj)); | |
ede4db72 RS |
1956 | |
1957 | if (CONSP (obj) | |
8e713be6 KR |
1958 | && INTEGERP (XCAR (obj)) |
1959 | && INTEGERP (XCDR (obj))) | |
ede4db72 | 1960 | { |
8e713be6 KR |
1961 | if (XINT (XCAR (obj)) == 0) |
1962 | return XCDR (obj); | |
1963 | if (XINT (XCAR (obj)) == -1) | |
1964 | return make_number (- XINT (XCDR (obj))); | |
ede4db72 RS |
1965 | } |
1966 | if (VECTORP (obj)) | |
1967 | { | |
1968 | int i; | |
1969 | int size = XVECTOR (obj)->size; | |
1970 | Lisp_Object copy; | |
1971 | if (size == 1) | |
1972 | return clean_local_selection_data (XVECTOR (obj)->contents [0]); | |
e607a484 | 1973 | copy = Fmake_vector (make_number (size), Qnil); |
ede4db72 RS |
1974 | for (i = 0; i < size; i++) |
1975 | XVECTOR (copy)->contents [i] | |
1976 | = clean_local_selection_data (XVECTOR (obj)->contents [i]); | |
1977 | return copy; | |
1978 | } | |
1979 | return obj; | |
1980 | } | |
1981 | \f | |
1982 | /* Called from XTread_socket to handle SelectionNotify events. | |
606140dd KH |
1983 | If it's the selection we are waiting for, stop waiting |
1984 | by setting the car of reading_selection_reply to non-nil. | |
1985 | We store t there if the reply is successful, lambda if not. */ | |
ede4db72 RS |
1986 | |
1987 | void | |
971de7fb | 1988 | x_handle_selection_notify (XSelectionEvent *event) |
ede4db72 | 1989 | { |
5d0ba25b | 1990 | if (event->requestor != reading_selection_window) |
ede4db72 RS |
1991 | return; |
1992 | if (event->selection != reading_which_selection) | |
1993 | return; | |
1994 | ||
d9c0d4a3 | 1995 | TRACE0 ("Received SelectionNotify"); |
f3fbd155 KR |
1996 | XSETCAR (reading_selection_reply, |
1997 | (event->property != 0 ? Qt : Qlambda)); | |
ede4db72 RS |
1998 | } |
1999 | ||
2000 | \f | |
a0d76c27 | 2001 | DEFUN ("x-own-selection-internal", Fx_own_selection_internal, |
8c1a1077 PJ |
2002 | Sx_own_selection_internal, 2, 2, 0, |
2003 | doc: /* Assert an X selection of the given TYPE with the given VALUE. | |
2004 | TYPE is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. | |
2005 | \(Those are literal upper-case symbol names, since that's what X expects.) | |
2006 | VALUE is typically a string, or a cons of two markers, but may be | |
2007 | anything that the functions on `selection-converter-alist' know about. */) | |
5842a27b | 2008 | (Lisp_Object selection_name, Lisp_Object selection_value) |
ede4db72 | 2009 | { |
703e0710 | 2010 | check_x (); |
b7826503 | 2011 | CHECK_SYMBOL (selection_name); |
253b2298 | 2012 | if (NILP (selection_value)) error ("SELECTION-VALUE may not be nil"); |
ede4db72 RS |
2013 | x_own_selection (selection_name, selection_value); |
2014 | return selection_value; | |
2015 | } | |
2016 | ||
2017 | ||
2018 | /* Request the selection value from the owner. If we are the owner, | |
2019 | simply return our selection value. If we are not the owner, this | |
2020 | will block until all of the data has arrived. */ | |
2021 | ||
a0d76c27 | 2022 | DEFUN ("x-get-selection-internal", Fx_get_selection_internal, |
3a42401d | 2023 | Sx_get_selection_internal, 2, 3, 0, |
8c1a1077 PJ |
2024 | doc: /* Return text selected from some X window. |
2025 | SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. | |
2026 | \(Those are literal upper-case symbol names, since that's what X expects.) | |
3a42401d JD |
2027 | TYPE is the type of data desired, typically `STRING'. |
2028 | TIME_STAMP is the time to use in the XConvertSelection call for foreign | |
2029 | selections. If omitted, defaults to the time for the last event. */) | |
5842a27b | 2030 | (Lisp_Object selection_symbol, Lisp_Object target_type, Lisp_Object time_stamp) |
ede4db72 RS |
2031 | { |
2032 | Lisp_Object val = Qnil; | |
2033 | struct gcpro gcpro1, gcpro2; | |
2034 | GCPRO2 (target_type, val); /* we store newly consed data into these */ | |
703e0710 | 2035 | check_x (); |
b7826503 | 2036 | CHECK_SYMBOL (selection_symbol); |
ede4db72 RS |
2037 | |
2038 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
2039 | if (CONSP (target_type) | |
8e713be6 | 2040 | && XCAR (target_type) == QMULTIPLE) |
ede4db72 | 2041 | { |
b7826503 | 2042 | CHECK_VECTOR (XCDR (target_type)); |
ede4db72 RS |
2043 | /* So we don't destructively modify this... */ |
2044 | target_type = copy_multiple_data (target_type); | |
2045 | } | |
2046 | else | |
2047 | #endif | |
b7826503 | 2048 | CHECK_SYMBOL (target_type); |
ede4db72 | 2049 | |
5109c8dd | 2050 | val = x_get_local_selection (selection_symbol, target_type, 1); |
ede4db72 RS |
2051 | |
2052 | if (NILP (val)) | |
2053 | { | |
3a42401d | 2054 | val = x_get_foreign_selection (selection_symbol, target_type, time_stamp); |
ede4db72 RS |
2055 | goto DONE; |
2056 | } | |
2057 | ||
2058 | if (CONSP (val) | |
8e713be6 | 2059 | && SYMBOLP (XCAR (val))) |
ede4db72 | 2060 | { |
8e713be6 KR |
2061 | val = XCDR (val); |
2062 | if (CONSP (val) && NILP (XCDR (val))) | |
2063 | val = XCAR (val); | |
ede4db72 RS |
2064 | } |
2065 | val = clean_local_selection_data (val); | |
2066 | DONE: | |
2067 | UNGCPRO; | |
2068 | return val; | |
2069 | } | |
2070 | ||
a0d76c27 | 2071 | DEFUN ("x-disown-selection-internal", Fx_disown_selection_internal, |
8c1a1077 PJ |
2072 | Sx_disown_selection_internal, 1, 2, 0, |
2073 | doc: /* If we own the selection SELECTION, disown it. | |
2074 | Disowning it means there is no such selection. */) | |
5842a27b | 2075 | (Lisp_Object selection, Lisp_Object time) |
ede4db72 | 2076 | { |
ede4db72 RS |
2077 | Time timestamp; |
2078 | Atom selection_atom; | |
31df61d6 AS |
2079 | union { |
2080 | struct selection_input_event sie; | |
2081 | struct input_event ie; | |
2082 | } event; | |
3834c318 | 2083 | Display *display; |
5c3a351a | 2084 | struct x_display_info *dpyinfo; |
378c33ca | 2085 | struct frame *sf = SELECTED_FRAME (); |
ede4db72 | 2086 | |
703e0710 | 2087 | check_x (); |
428a555e KL |
2088 | if (! FRAME_X_P (sf)) |
2089 | return Qnil; | |
2090 | ||
378c33ca GM |
2091 | display = FRAME_X_DISPLAY (sf); |
2092 | dpyinfo = FRAME_X_DISPLAY_INFO (sf); | |
b7826503 | 2093 | CHECK_SYMBOL (selection); |
ede4db72 | 2094 | if (NILP (time)) |
7da64e5c | 2095 | timestamp = last_event_timestamp; |
ede4db72 RS |
2096 | else |
2097 | timestamp = cons_to_long (time); | |
2098 | ||
2099 | if (NILP (assq_no_quit (selection, Vselection_alist))) | |
2100 | return Qnil; /* Don't disown the selection when we're not the owner. */ | |
2101 | ||
5c3a351a | 2102 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection); |
ede4db72 RS |
2103 | |
2104 | BLOCK_INPUT; | |
2105 | XSetSelectionOwner (display, selection_atom, None, timestamp); | |
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. */ | |
31df61d6 AS |
2113 | SELECTION_EVENT_DISPLAY (&event.sie) = display; |
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 | ||
a87ed99c RS |
2121 | /* Get rid of all the selections in buffer BUFFER. |
2122 | This is used when we kill a buffer. */ | |
2123 | ||
2124 | void | |
971de7fb | 2125 | x_disown_buffer_selections (Lisp_Object buffer) |
a87ed99c RS |
2126 | { |
2127 | Lisp_Object tail; | |
2128 | struct buffer *buf = XBUFFER (buffer); | |
2129 | ||
8e713be6 | 2130 | for (tail = Vselection_alist; CONSP (tail); tail = XCDR (tail)) |
a87ed99c RS |
2131 | { |
2132 | Lisp_Object elt, value; | |
8e713be6 KR |
2133 | elt = XCAR (tail); |
2134 | value = XCDR (elt); | |
2135 | if (CONSP (value) && MARKERP (XCAR (value)) | |
2136 | && XMARKER (XCAR (value))->buffer == buf) | |
2137 | Fx_disown_selection_internal (XCAR (elt), Qnil); | |
a87ed99c RS |
2138 | } |
2139 | } | |
ede4db72 RS |
2140 | |
2141 | DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p, | |
8c1a1077 PJ |
2142 | 0, 1, 0, |
2143 | doc: /* Whether the current Emacs process owns the given X Selection. | |
2144 | The arg should be the name of the selection in question, typically one of | |
2145 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'. | |
2146 | \(Those are literal upper-case symbol names, since that's what X expects.) | |
2147 | For convenience, the symbol nil is the same as `PRIMARY', | |
2148 | and t is the same as `SECONDARY'. */) | |
5842a27b | 2149 | (Lisp_Object selection) |
ede4db72 | 2150 | { |
703e0710 | 2151 | check_x (); |
b7826503 | 2152 | CHECK_SYMBOL (selection); |
ede4db72 RS |
2153 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
2154 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
1b65481e | 2155 | |
ede4db72 RS |
2156 | if (NILP (Fassq (selection, Vselection_alist))) |
2157 | return Qnil; | |
2158 | return Qt; | |
2159 | } | |
2160 | ||
2161 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
8c1a1077 PJ |
2162 | 0, 1, 0, |
2163 | doc: /* Whether there is an owner for the given X Selection. | |
2164 | The arg should be the name of the selection in question, typically one of | |
2165 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'. | |
2166 | \(Those are literal upper-case symbol names, since that's what X expects.) | |
2167 | For convenience, the symbol nil is the same as `PRIMARY', | |
2168 | and t is the same as `SECONDARY'. */) | |
5842a27b | 2169 | (Lisp_Object selection) |
ede4db72 RS |
2170 | { |
2171 | Window owner; | |
356ba514 | 2172 | Atom atom; |
3834c318 | 2173 | Display *dpy; |
378c33ca | 2174 | struct frame *sf = SELECTED_FRAME (); |
3834c318 | 2175 | |
b8c70430 | 2176 | /* It should be safe to call this before we have an X frame. */ |
378c33ca | 2177 | if (! FRAME_X_P (sf)) |
b8c70430 RS |
2178 | return Qnil; |
2179 | ||
378c33ca | 2180 | dpy = FRAME_X_DISPLAY (sf); |
b7826503 | 2181 | CHECK_SYMBOL (selection); |
ede4db72 RS |
2182 | if (!NILP (Fx_selection_owner_p (selection))) |
2183 | return Qt; | |
356ba514 RS |
2184 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
2185 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
378c33ca | 2186 | atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (sf), dpy, selection); |
356ba514 RS |
2187 | if (atom == 0) |
2188 | return Qnil; | |
ede4db72 | 2189 | BLOCK_INPUT; |
356ba514 | 2190 | owner = XGetSelectionOwner (dpy, atom); |
ede4db72 RS |
2191 | UNBLOCK_INPUT; |
2192 | return (owner ? Qt : Qnil); | |
2193 | } | |
2194 | ||
2195 | \f | |
1fb3821b JD |
2196 | /*********************************************************************** |
2197 | Drag and drop support | |
2198 | ***********************************************************************/ | |
2199 | /* Check that lisp values are of correct type for x_fill_property_data. | |
2200 | That is, number, string or a cons with two numbers (low and high 16 | |
2201 | bit parts of a 32 bit number). */ | |
2202 | ||
2203 | int | |
971de7fb | 2204 | x_check_property_data (Lisp_Object data) |
1fb3821b JD |
2205 | { |
2206 | Lisp_Object iter; | |
2207 | int size = 0; | |
2208 | ||
2209 | for (iter = data; CONSP (iter) && size != -1; iter = XCDR (iter), ++size) | |
2210 | { | |
2211 | Lisp_Object o = XCAR (iter); | |
2212 | ||
2213 | if (! NUMBERP (o) && ! STRINGP (o) && ! CONSP (o)) | |
2214 | size = -1; | |
2215 | else if (CONSP (o) && | |
2216 | (! NUMBERP (XCAR (o)) || ! NUMBERP (XCDR (o)))) | |
2217 | size = -1; | |
2218 | } | |
2219 | ||
2220 | return size; | |
2221 | } | |
2222 | ||
2223 | /* Convert lisp values to a C array. Values may be a number, a string | |
2224 | which is taken as an X atom name and converted to the atom value, or | |
2225 | a cons containing the two 16 bit parts of a 32 bit number. | |
2226 | ||
2227 | DPY is the display use to look up X atoms. | |
2228 | DATA is a Lisp list of values to be converted. | |
2229 | RET is the C array that contains the converted values. It is assumed | |
ff59904a | 2230 | it is big enough to hold all values. |
e22cf39c JD |
2231 | FORMAT is 8, 16 or 32 and denotes char/short/long for each C value to |
2232 | be stored in RET. Note that long is used for 32 even if long is more | |
2233 | than 32 bits (see man pages for XChangeProperty, XGetWindowProperty and | |
2234 | XClientMessageEvent). */ | |
1fb3821b JD |
2235 | |
2236 | void | |
971de7fb | 2237 | x_fill_property_data (Display *dpy, Lisp_Object data, void *ret, int format) |
1fb3821b | 2238 | { |
e22cf39c JD |
2239 | long val; |
2240 | long *d32 = (long *) ret; | |
2241 | short *d16 = (short *) ret; | |
2242 | char *d08 = (char *) ret; | |
1fb3821b JD |
2243 | Lisp_Object iter; |
2244 | ||
2245 | for (iter = data; CONSP (iter); iter = XCDR (iter)) | |
2246 | { | |
2247 | Lisp_Object o = XCAR (iter); | |
2248 | ||
2249 | if (INTEGERP (o)) | |
e22cf39c | 2250 | val = (long) XFASTINT (o); |
1fb3821b | 2251 | else if (FLOATP (o)) |
e22cf39c | 2252 | val = (long) XFLOAT_DATA (o); |
1fb3821b | 2253 | else if (CONSP (o)) |
e22cf39c | 2254 | val = (long) cons_to_long (o); |
1fb3821b JD |
2255 | else if (STRINGP (o)) |
2256 | { | |
2257 | BLOCK_INPUT; | |
51b59d79 | 2258 | val = (long) XInternAtom (dpy, SSDATA (o), False); |
1fb3821b JD |
2259 | UNBLOCK_INPUT; |
2260 | } | |
2261 | else | |
2262 | error ("Wrong type, must be string, number or cons"); | |
2263 | ||
2264 | if (format == 8) | |
e22cf39c | 2265 | *d08++ = (char) val; |
1fb3821b | 2266 | else if (format == 16) |
e22cf39c | 2267 | *d16++ = (short) val; |
1fb3821b JD |
2268 | else |
2269 | *d32++ = val; | |
2270 | } | |
2271 | } | |
2272 | ||
2273 | /* Convert an array of C values to a Lisp list. | |
2274 | F is the frame to be used to look up X atoms if the TYPE is XA_ATOM. | |
2275 | DATA is a C array of values to be converted. | |
2276 | TYPE is the type of the data. Only XA_ATOM is special, it converts | |
2277 | each number in DATA to its corresponfing X atom as a symbol. | |
2278 | FORMAT is 8, 16 or 32 and gives the size in bits for each C value to | |
2279 | be stored in RET. | |
2280 | SIZE is the number of elements in DATA. | |
2281 | ||
b8d6f4af JD |
2282 | Important: When format is 32, data should contain an array of int, |
2283 | not an array of long as the X library returns. This makes a difference | |
2284 | when sizeof(long) != sizeof(int). | |
2285 | ||
1fb3821b JD |
2286 | Also see comment for selection_data_to_lisp_data above. */ |
2287 | ||
2288 | Lisp_Object | |
eec47d6b DN |
2289 | x_property_data_to_lisp (struct frame *f, const unsigned char *data, |
2290 | Atom type, int format, long unsigned int size) | |
1fb3821b JD |
2291 | { |
2292 | return selection_data_to_lisp_data (FRAME_X_DISPLAY (f), | |
2293 | data, size*format/8, type, format); | |
2294 | } | |
2295 | ||
31f16913 | 2296 | /* Get the mouse position in frame relative coordinates. */ |
1fb3821b JD |
2297 | |
2298 | static void | |
971de7fb | 2299 | mouse_position_for_drop (FRAME_PTR f, int *x, int *y) |
1fb3821b JD |
2300 | { |
2301 | Window root, dummy_window; | |
2302 | int dummy; | |
2303 | ||
2304 | BLOCK_INPUT; | |
2305 | ||
2306 | XQueryPointer (FRAME_X_DISPLAY (f), | |
2307 | DefaultRootWindow (FRAME_X_DISPLAY (f)), | |
2308 | ||
2309 | /* The root window which contains the pointer. */ | |
2310 | &root, | |
2311 | ||
2312 | /* Window pointer is on, not used */ | |
2313 | &dummy_window, | |
2314 | ||
2315 | /* The position on that root window. */ | |
2316 | x, y, | |
2317 | ||
2318 | /* x/y in dummy_window coordinates, not used. */ | |
2319 | &dummy, &dummy, | |
2320 | ||
2321 | /* Modifier keys and pointer buttons, about which | |
2322 | we don't care. */ | |
2323 | (unsigned int *) &dummy); | |
2324 | ||
2325 | ||
2326 | /* Absolute to relative. */ | |
2327 | *x -= f->left_pos + FRAME_OUTER_TO_INNER_DIFF_X (f); | |
2328 | *y -= f->top_pos + FRAME_OUTER_TO_INNER_DIFF_Y (f); | |
2329 | ||
2330 | UNBLOCK_INPUT; | |
2331 | } | |
2332 | ||
2333 | DEFUN ("x-get-atom-name", Fx_get_atom_name, | |
2334 | Sx_get_atom_name, 1, 2, 0, | |
2335 | doc: /* Return the X atom name for VALUE as a string. | |
2336 | VALUE may be a number or a cons where the car is the upper 16 bits and | |
2337 | the cdr is the lower 16 bits of a 32 bit value. | |
2338 | Use the display for FRAME or the current frame if FRAME is not given or nil. | |
2339 | ||
2340 | If the value is 0 or the atom is not known, return the empty string. */) | |
5842a27b | 2341 | (Lisp_Object value, Lisp_Object frame) |
1fb3821b JD |
2342 | { |
2343 | struct frame *f = check_x_frame (frame); | |
2344 | char *name = 0; | |
42ca4633 | 2345 | char empty[] = ""; |
1fb3821b | 2346 | Lisp_Object ret = Qnil; |
1fb3821b JD |
2347 | Display *dpy = FRAME_X_DISPLAY (f); |
2348 | Atom atom; | |
c525d842 | 2349 | int had_errors; |
1fb3821b JD |
2350 | |
2351 | if (INTEGERP (value)) | |
2352 | atom = (Atom) XUINT (value); | |
2353 | else if (FLOATP (value)) | |
ff59904a | 2354 | atom = (Atom) XFLOAT_DATA (value); |
1fb3821b JD |
2355 | else if (CONSP (value)) |
2356 | atom = (Atom) cons_to_long (value); | |
2357 | else | |
2358 | error ("Wrong type, value must be number or cons"); | |
2359 | ||
2360 | BLOCK_INPUT; | |
9ba8e10d | 2361 | x_catch_errors (dpy); |
42ca4633 | 2362 | name = atom ? XGetAtomName (dpy, atom) : empty; |
c525d842 CY |
2363 | had_errors = x_had_errors_p (dpy); |
2364 | x_uncatch_errors (); | |
1fb3821b | 2365 | |
c525d842 | 2366 | if (!had_errors) |
1fb3821b JD |
2367 | ret = make_string (name, strlen (name)); |
2368 | ||
1fb3821b | 2369 | if (atom && name) XFree (name); |
8b3ad112 | 2370 | if (NILP (ret)) ret = empty_unibyte_string; |
1fb3821b JD |
2371 | |
2372 | UNBLOCK_INPUT; | |
2373 | ||
2374 | return ret; | |
2375 | } | |
2376 | ||
9fc68699 JD |
2377 | DEFUN ("x-register-dnd-atom", Fx_register_dnd_atom, |
2378 | Sx_register_dnd_atom, 1, 2, 0, | |
2379 | doc: /* Request that dnd events are made for ClientMessages with ATOM. | |
2380 | ATOM can be a symbol or a string. The ATOM is interned on the display that | |
2381 | FRAME is on. If FRAME is nil, the selected frame is used. */) | |
5842a27b | 2382 | (Lisp_Object atom, Lisp_Object frame) |
9fc68699 JD |
2383 | { |
2384 | Atom x_atom; | |
2385 | struct frame *f = check_x_frame (frame); | |
2386 | size_t i; | |
2387 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
2388 | ||
2389 | ||
2390 | if (SYMBOLP (atom)) | |
2391 | x_atom = symbol_to_x_atom (dpyinfo, FRAME_X_DISPLAY (f), atom); | |
2392 | else if (STRINGP (atom)) | |
2393 | { | |
2394 | BLOCK_INPUT; | |
51b59d79 | 2395 | x_atom = XInternAtom (FRAME_X_DISPLAY (f), SSDATA (atom), False); |
9fc68699 JD |
2396 | UNBLOCK_INPUT; |
2397 | } | |
2398 | else | |
2399 | error ("ATOM must be a symbol or a string"); | |
2400 | ||
db9cd97a | 2401 | for (i = 0; i < dpyinfo->x_dnd_atoms_length; ++i) |
9fc68699 JD |
2402 | if (dpyinfo->x_dnd_atoms[i] == x_atom) |
2403 | return Qnil; | |
2404 | ||
db9cd97a | 2405 | if (dpyinfo->x_dnd_atoms_length == dpyinfo->x_dnd_atoms_size) |
9fc68699 JD |
2406 | { |
2407 | dpyinfo->x_dnd_atoms_size *= 2; | |
2408 | dpyinfo->x_dnd_atoms = xrealloc (dpyinfo->x_dnd_atoms, | |
2409 | sizeof (*dpyinfo->x_dnd_atoms) | |
2410 | * dpyinfo->x_dnd_atoms_size); | |
2411 | } | |
2412 | ||
2413 | dpyinfo->x_dnd_atoms[dpyinfo->x_dnd_atoms_length++] = x_atom; | |
2414 | return Qnil; | |
2415 | } | |
2416 | ||
2417 | /* Convert an XClientMessageEvent to a Lisp event of type DRAG_N_DROP_EVENT. */ | |
1fb3821b JD |
2418 | |
2419 | int | |
971de7fb | 2420 | x_handle_dnd_message (struct frame *f, XClientMessageEvent *event, struct x_display_info *dpyinfo, struct input_event *bufp) |
1fb3821b JD |
2421 | { |
2422 | Lisp_Object vec; | |
2423 | Lisp_Object frame; | |
e22cf39c JD |
2424 | /* format 32 => size 5, format 16 => size 10, format 8 => size 20 */ |
2425 | unsigned long size = 160/event->format; | |
1fb3821b | 2426 | int x, y; |
31f16913 JD |
2427 | unsigned char *data = (unsigned char *) event->data.b; |
2428 | int idata[5]; | |
9fc68699 JD |
2429 | size_t i; |
2430 | ||
db9cd97a | 2431 | for (i = 0; i < dpyinfo->x_dnd_atoms_length; ++i) |
9fc68699 JD |
2432 | if (dpyinfo->x_dnd_atoms[i] == event->message_type) break; |
2433 | ||
2434 | if (i == dpyinfo->x_dnd_atoms_length) return 0; | |
1fb3821b JD |
2435 | |
2436 | XSETFRAME (frame, f); | |
2437 | ||
31f16913 JD |
2438 | /* On a 64 bit machine, the event->data.l array members are 64 bits (long), |
2439 | but the x_property_data_to_lisp (or rather selection_data_to_lisp_data) | |
2440 | function expects them to be of size int (i.e. 32). So to be able to | |
2441 | use that function, put the data in the form it expects if format is 32. */ | |
2442 | ||
2443 | if (event->format == 32 && event->format < BITS_PER_LONG) | |
2444 | { | |
2445 | int i; | |
2446 | for (i = 0; i < 5; ++i) /* There are only 5 longs in a ClientMessage. */ | |
2447 | idata[i] = (int) event->data.l[i]; | |
2448 | data = (unsigned char *) idata; | |
2449 | } | |
2450 | ||
d2f14999 | 2451 | vec = Fmake_vector (make_number (4), Qnil); |
3ae565b3 SM |
2452 | ASET (vec, 0, SYMBOL_NAME (x_atom_to_symbol (FRAME_X_DISPLAY (f), |
2453 | event->message_type))); | |
2454 | ASET (vec, 1, frame); | |
2455 | ASET (vec, 2, make_number (event->format)); | |
2456 | ASET (vec, 3, x_property_data_to_lisp (f, | |
2457 | data, | |
2458 | event->message_type, | |
2459 | event->format, | |
2460 | size)); | |
1fb3821b JD |
2461 | |
2462 | mouse_position_for_drop (f, &x, &y); | |
2463 | bufp->kind = DRAG_N_DROP_EVENT; | |
862c94ca | 2464 | bufp->frame_or_window = frame; |
1fb3821b JD |
2465 | bufp->timestamp = CurrentTime; |
2466 | bufp->x = make_number (x); | |
2467 | bufp->y = make_number (y); | |
862c94ca | 2468 | bufp->arg = vec; |
1fb3821b JD |
2469 | bufp->modifiers = 0; |
2470 | ||
2471 | return 1; | |
2472 | } | |
2473 | ||
2474 | DEFUN ("x-send-client-message", Fx_send_client_event, | |
2475 | Sx_send_client_message, 6, 6, 0, | |
2476 | doc: /* Send a client message of MESSAGE-TYPE to window DEST on DISPLAY. | |
2477 | ||
2478 | For DISPLAY, specify either a frame or a display name (a string). | |
2479 | If DISPLAY is nil, that stands for the selected frame's display. | |
2480 | DEST may be a number, in which case it is a Window id. The value 0 may | |
2481 | be used to send to the root window of the DISPLAY. | |
2482 | If DEST is a cons, it is converted to a 32 bit number | |
2483 | with the high 16 bits from the car and the lower 16 bit from the cdr. That | |
2484 | number is then used as a window id. | |
2485 | If DEST is a frame the event is sent to the outer window of that frame. | |
69785ad0 | 2486 | A value of nil means the currently selected frame. |
1fb3821b JD |
2487 | If DEST is the string "PointerWindow" the event is sent to the window that |
2488 | contains the pointer. If DEST is the string "InputFocus" the event is | |
2489 | sent to the window that has the input focus. | |
2490 | FROM is the frame sending the event. Use nil for currently selected frame. | |
2491 | MESSAGE-TYPE is the name of an Atom as a string. | |
2492 | FORMAT must be one of 8, 16 or 32 and determines the size of the values in | |
2493 | bits. VALUES is a list of numbers, cons and/or strings containing the values | |
2494 | to send. If a value is a string, it is converted to an Atom and the value of | |
2495 | the Atom is sent. If a value is a cons, it is converted to a 32 bit number | |
2496 | with the high 16 bits from the car and the lower 16 bit from the cdr. | |
2497 | If more values than fits into the event is given, the excessive values | |
2498 | are ignored. */) | |
5842a27b | 2499 | (Lisp_Object display, Lisp_Object dest, Lisp_Object from, Lisp_Object message_type, Lisp_Object format, Lisp_Object values) |
2d9074ba JD |
2500 | { |
2501 | struct x_display_info *dpyinfo = check_x_display_info (display); | |
2502 | ||
933e29ff | 2503 | CHECK_STRING (message_type); |
2d9074ba | 2504 | x_send_client_event(display, dest, from, |
933e29ff J |
2505 | XInternAtom (dpyinfo->display, |
2506 | SDATA (message_type), | |
2507 | False), | |
2d9074ba JD |
2508 | format, values); |
2509 | ||
2510 | return Qnil; | |
2511 | } | |
2512 | ||
2513 | void | |
2514 | x_send_client_event (Lisp_Object display, Lisp_Object dest, Lisp_Object from, Atom message_type, Lisp_Object format, Lisp_Object values) | |
1fb3821b JD |
2515 | { |
2516 | struct x_display_info *dpyinfo = check_x_display_info (display); | |
2517 | Window wdest; | |
2518 | XEvent event; | |
1fb3821b | 2519 | struct frame *f = check_x_frame (from); |
1fb3821b JD |
2520 | int to_root; |
2521 | ||
1fb3821b JD |
2522 | CHECK_NUMBER (format); |
2523 | CHECK_CONS (values); | |
2524 | ||
2525 | if (x_check_property_data (values) == -1) | |
2526 | error ("Bad data in VALUES, must be number, cons or string"); | |
2527 | ||
2528 | event.xclient.type = ClientMessage; | |
2529 | event.xclient.format = XFASTINT (format); | |
2530 | ||
2531 | if (event.xclient.format != 8 && event.xclient.format != 16 | |
2532 | && event.xclient.format != 32) | |
2533 | error ("FORMAT must be one of 8, 16 or 32"); | |
a0ecb2ac | 2534 | |
1fb3821b JD |
2535 | if (FRAMEP (dest) || NILP (dest)) |
2536 | { | |
2537 | struct frame *fdest = check_x_frame (dest); | |
2538 | wdest = FRAME_OUTER_WINDOW (fdest); | |
2539 | } | |
2540 | else if (STRINGP (dest)) | |
2541 | { | |
2542 | if (strcmp (SDATA (dest), "PointerWindow") == 0) | |
2543 | wdest = PointerWindow; | |
2544 | else if (strcmp (SDATA (dest), "InputFocus") == 0) | |
2545 | wdest = InputFocus; | |
2546 | else | |
2547 | error ("DEST as a string must be one of PointerWindow or InputFocus"); | |
2548 | } | |
2549 | else if (INTEGERP (dest)) | |
2550 | wdest = (Window) XFASTINT (dest); | |
2551 | else if (FLOATP (dest)) | |
ff59904a | 2552 | wdest = (Window) XFLOAT_DATA (dest); |
1fb3821b JD |
2553 | else if (CONSP (dest)) |
2554 | { | |
2555 | if (! NUMBERP (XCAR (dest)) || ! NUMBERP (XCDR (dest))) | |
2556 | error ("Both car and cdr for DEST must be numbers"); | |
2557 | else | |
2558 | wdest = (Window) cons_to_long (dest); | |
2559 | } | |
2560 | else | |
2561 | error ("DEST must be a frame, nil, string, number or cons"); | |
2562 | ||
2563 | if (wdest == 0) wdest = dpyinfo->root_window; | |
2564 | to_root = wdest == dpyinfo->root_window; | |
2565 | ||
1fb3821b JD |
2566 | BLOCK_INPUT; |
2567 | ||
2d9074ba | 2568 | event.xclient.message_type = message_type; |
1fb3821b JD |
2569 | event.xclient.display = dpyinfo->display; |
2570 | ||
2571 | /* Some clients (metacity for example) expects sending window to be here | |
2572 | when sending to the root window. */ | |
2573 | event.xclient.window = to_root ? FRAME_OUTER_WINDOW (f) : wdest; | |
2574 | ||
6e816df5 | 2575 | |
1fb3821b JD |
2576 | memset (event.xclient.data.b, 0, sizeof (event.xclient.data.b)); |
2577 | x_fill_property_data (dpyinfo->display, values, event.xclient.data.b, | |
2578 | event.xclient.format); | |
2579 | ||
2580 | /* If event mask is 0 the event is sent to the client that created | |
2581 | the destination window. But if we are sending to the root window, | |
2582 | there is no such client. Then we set the event mask to 0xffff. The | |
2583 | event then goes to clients selecting for events on the root window. */ | |
9ba8e10d | 2584 | x_catch_errors (dpyinfo->display); |
1fb3821b JD |
2585 | { |
2586 | int propagate = to_root ? False : True; | |
2587 | unsigned mask = to_root ? 0xffff : 0; | |
2588 | XSendEvent (dpyinfo->display, wdest, propagate, mask, &event); | |
2589 | XFlush (dpyinfo->display); | |
2590 | } | |
4545fa20 | 2591 | x_uncatch_errors (); |
1fb3821b | 2592 | UNBLOCK_INPUT; |
1fb3821b JD |
2593 | } |
2594 | ||
2595 | \f | |
ede4db72 | 2596 | void |
971de7fb | 2597 | syms_of_xselect (void) |
ede4db72 | 2598 | { |
ede4db72 RS |
2599 | defsubr (&Sx_get_selection_internal); |
2600 | defsubr (&Sx_own_selection_internal); | |
2601 | defsubr (&Sx_disown_selection_internal); | |
2602 | defsubr (&Sx_selection_owner_p); | |
2603 | defsubr (&Sx_selection_exists_p); | |
2604 | ||
1fb3821b JD |
2605 | defsubr (&Sx_get_atom_name); |
2606 | defsubr (&Sx_send_client_message); | |
9fc68699 | 2607 | defsubr (&Sx_register_dnd_atom); |
1fb3821b | 2608 | |
ede4db72 RS |
2609 | reading_selection_reply = Fcons (Qnil, Qnil); |
2610 | staticpro (&reading_selection_reply); | |
2611 | reading_selection_window = 0; | |
2612 | reading_which_selection = 0; | |
2613 | ||
2614 | property_change_wait_list = 0; | |
2f65feb6 | 2615 | prop_location_identifier = 0; |
ede4db72 RS |
2616 | property_change_reply = Fcons (Qnil, Qnil); |
2617 | staticpro (&property_change_reply); | |
2618 | ||
2619 | Vselection_alist = Qnil; | |
2620 | staticpro (&Vselection_alist); | |
2621 | ||
29208e82 | 2622 | DEFVAR_LISP ("selection-converter-alist", Vselection_converter_alist, |
8c1a1077 PJ |
2623 | doc: /* An alist associating X Windows selection-types with functions. |
2624 | These functions are called to convert the selection, with three args: | |
2625 | the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD'); | |
2626 | a desired type to which the selection should be converted; | |
2627 | and the local selection value (whatever was given to `x-own-selection'). | |
2628 | ||
2629 | The function should return the value to send to the X server | |
2630 | \(typically a string). A return value of nil | |
2631 | means that the conversion could not be done. | |
2632 | A return value which is the symbol `NULL' | |
2633 | means that a side-effect was executed, | |
2634 | and there is no meaningful selection value. */); | |
ede4db72 RS |
2635 | Vselection_converter_alist = Qnil; |
2636 | ||
29208e82 | 2637 | DEFVAR_LISP ("x-lost-selection-functions", Vx_lost_selection_functions, |
8c1a1077 PJ |
2638 | doc: /* A list of functions to be called when Emacs loses an X selection. |
2639 | \(This happens when some other X client makes its own selection | |
2640 | or when a Lisp program explicitly clears the selection.) | |
2641 | The functions are called with one argument, the selection type | |
2642 | \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'). */); | |
c917a8de | 2643 | Vx_lost_selection_functions = Qnil; |
ede4db72 | 2644 | |
29208e82 | 2645 | DEFVAR_LISP ("x-sent-selection-functions", Vx_sent_selection_functions, |
8c1a1077 PJ |
2646 | doc: /* A list of functions to be called when Emacs answers a selection request. |
2647 | The functions are called with four arguments: | |
2648 | - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD'); | |
2649 | - the selection-type which Emacs was asked to convert the | |
2650 | selection into before sending (for example, `STRING' or `LENGTH'); | |
2651 | - a flag indicating success or failure for responding to the request. | |
2652 | We might have failed (and declined the request) for any number of reasons, | |
2653 | including being asked for a selection that we no longer own, or being asked | |
2654 | to convert into a type that we don't know about or that is inappropriate. | |
2655 | This hook doesn't let you change the behavior of Emacs's selection replies, | |
2656 | it merely informs you that they have happened. */); | |
c917a8de | 2657 | Vx_sent_selection_functions = Qnil; |
ede4db72 | 2658 | |
29208e82 | 2659 | DEFVAR_INT ("x-selection-timeout", x_selection_timeout, |
8c1a1077 PJ |
2660 | doc: /* Number of milliseconds to wait for a selection reply. |
2661 | If the selection owner doesn't reply in this time, we give up. | |
2662 | A value of 0 means wait as long as necessary. This is initialized from the | |
2663 | \"*selectionTimeout\" resource. */); | |
ede4db72 RS |
2664 | x_selection_timeout = 0; |
2665 | ||
9852377f | 2666 | /* QPRIMARY is defined in keyboard.c. */ |
d67b4f80 DN |
2667 | QSECONDARY = intern_c_string ("SECONDARY"); staticpro (&QSECONDARY); |
2668 | QSTRING = intern_c_string ("STRING"); staticpro (&QSTRING); | |
2669 | QINTEGER = intern_c_string ("INTEGER"); staticpro (&QINTEGER); | |
2670 | QCLIPBOARD = intern_c_string ("CLIPBOARD"); staticpro (&QCLIPBOARD); | |
2671 | QTIMESTAMP = intern_c_string ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2672 | QTEXT = intern_c_string ("TEXT"); staticpro (&QTEXT); | |
2673 | QCOMPOUND_TEXT = intern_c_string ("COMPOUND_TEXT"); staticpro (&QCOMPOUND_TEXT); | |
2674 | QUTF8_STRING = intern_c_string ("UTF8_STRING"); staticpro (&QUTF8_STRING); | |
2675 | QDELETE = intern_c_string ("DELETE"); staticpro (&QDELETE); | |
2676 | QMULTIPLE = intern_c_string ("MULTIPLE"); staticpro (&QMULTIPLE); | |
2677 | QINCR = intern_c_string ("INCR"); staticpro (&QINCR); | |
2678 | QEMACS_TMP = intern_c_string ("_EMACS_TMP_"); staticpro (&QEMACS_TMP); | |
2679 | QTARGETS = intern_c_string ("TARGETS"); staticpro (&QTARGETS); | |
2680 | QATOM = intern_c_string ("ATOM"); staticpro (&QATOM); | |
2681 | QATOM_PAIR = intern_c_string ("ATOM_PAIR"); staticpro (&QATOM_PAIR); | |
2682 | QNULL = intern_c_string ("NULL"); staticpro (&QNULL); | |
2683 | Qcompound_text_with_extensions = intern_c_string ("compound-text-with-extensions"); | |
5a79ea57 | 2684 | staticpro (&Qcompound_text_with_extensions); |
ede4db72 | 2685 | |
d67b4f80 | 2686 | Qforeign_selection = intern_c_string ("foreign-selection"); |
e57ad4d8 | 2687 | staticpro (&Qforeign_selection); |
ede4db72 | 2688 | } |