Commit | Line | Data |
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2408b3a1 | 1 | /* X Selection processing for Emacs. |
73b0cd50 | 2 | Copyright (C) 1993-1997, 2000-2011 Free Software Foundation, Inc. |
ede4db72 RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
ede4db72 | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
ede4db72 RS |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
ede4db72 | 18 | |
c6c5df7f | 19 | |
ede4db72 RS |
20 | /* Rewritten by jwz */ |
21 | ||
18160b98 | 22 | #include <config.h> |
5b698285 | 23 | #include <stdio.h> /* termhooks.h needs this */ |
d7306fe6 | 24 | #include <setjmp.h> |
678b3958 KS |
25 | |
26 | #ifdef HAVE_SYS_TYPES_H | |
27 | #include <sys/types.h> | |
28 | #endif | |
4004364e | 29 | |
678b3958 | 30 | #include <unistd.h> |
678b3958 | 31 | |
ede4db72 RS |
32 | #include "lisp.h" |
33 | #include "xterm.h" /* for all of the X includes */ | |
7da64e5c RS |
34 | #include "dispextern.h" /* frame.h seems to want this */ |
35 | #include "frame.h" /* Need this to get the X window of selected_frame */ | |
9ac0d9e0 | 36 | #include "blockinput.h" |
5faa9b45 | 37 | #include "buffer.h" |
dfcf069d | 38 | #include "process.h" |
1fb3821b | 39 | #include "termhooks.h" |
dd0fe424 | 40 | #include "keyboard.h" |
1fb3821b JD |
41 | |
42 | #include <X11/Xproto.h> | |
7da64e5c | 43 | |
d9c0d4a3 GM |
44 | struct prop_location; |
45 | ||
f57e2426 J |
46 | static Lisp_Object x_atom_to_symbol (Display *dpy, Atom atom); |
47 | static Atom symbol_to_x_atom (struct x_display_info *, Display *, | |
48 | Lisp_Object); | |
49 | static void x_own_selection (Lisp_Object, Lisp_Object); | |
50 | static Lisp_Object x_get_local_selection (Lisp_Object, Lisp_Object, int); | |
51 | static void x_decline_selection_request (struct input_event *); | |
52 | static Lisp_Object x_selection_request_lisp_error (Lisp_Object); | |
53 | static Lisp_Object queue_selection_requests_unwind (Lisp_Object); | |
54 | static Lisp_Object some_frame_on_display (struct x_display_info *); | |
55 | static Lisp_Object x_catch_errors_unwind (Lisp_Object); | |
56 | static void x_reply_selection_request (struct input_event *, int, | |
57 | unsigned char *, int, Atom); | |
58 | static int waiting_for_other_props_on_window (Display *, Window); | |
59 | static struct prop_location *expect_property_change (Display *, Window, | |
60 | Atom, int); | |
61 | static void unexpect_property_change (struct prop_location *); | |
62 | static Lisp_Object wait_for_property_change_unwind (Lisp_Object); | |
63 | static void wait_for_property_change (struct prop_location *); | |
64 | static Lisp_Object x_get_foreign_selection (Lisp_Object, | |
65 | Lisp_Object, | |
66 | Lisp_Object); | |
67 | static void x_get_window_property (Display *, Window, Atom, | |
68 | unsigned char **, int *, | |
69 | Atom *, int *, unsigned long *, int); | |
70 | static void receive_incremental_selection (Display *, Window, Atom, | |
71 | Lisp_Object, unsigned, | |
72 | unsigned char **, int *, | |
73 | Atom *, int *, unsigned long *); | |
74 | static Lisp_Object x_get_window_property_as_lisp_data (Display *, | |
75 | Window, Atom, | |
76 | Lisp_Object, Atom); | |
eec47d6b DN |
77 | static Lisp_Object selection_data_to_lisp_data (Display *, |
78 | const unsigned char *, | |
f57e2426 J |
79 | int, Atom, int); |
80 | static void lisp_data_to_selection_data (Display *, Lisp_Object, | |
81 | unsigned char **, Atom *, | |
82 | unsigned *, int *, int *); | |
83 | static Lisp_Object clean_local_selection_data (Lisp_Object); | |
d9c0d4a3 GM |
84 | |
85 | /* Printing traces to stderr. */ | |
86 | ||
87 | #ifdef TRACE_SELECTION | |
88 | #define TRACE0(fmt) \ | |
89 | fprintf (stderr, "%d: " fmt "\n", getpid ()) | |
90 | #define TRACE1(fmt, a0) \ | |
91 | fprintf (stderr, "%d: " fmt "\n", getpid (), a0) | |
92 | #define TRACE2(fmt, a0, a1) \ | |
93 | fprintf (stderr, "%d: " fmt "\n", getpid (), a0, a1) | |
9c3ad9e1 JD |
94 | #define TRACE3(fmt, a0, a1, a2) \ |
95 | fprintf (stderr, "%d: " fmt "\n", getpid (), a0, a1, a2) | |
d9c0d4a3 GM |
96 | #else |
97 | #define TRACE0(fmt) (void) 0 | |
98 | #define TRACE1(fmt, a0) (void) 0 | |
99 | #define TRACE2(fmt, a0, a1) (void) 0 | |
9c3ad9e1 | 100 | #define TRACE3(fmt, a0, a1) (void) 0 |
d9c0d4a3 GM |
101 | #endif |
102 | ||
103 | ||
e45a249b | 104 | Lisp_Object QSECONDARY, QSTRING, QINTEGER, QCLIPBOARD, QTIMESTAMP, |
ede4db72 RS |
105 | QTEXT, QDELETE, QMULTIPLE, QINCR, QEMACS_TMP, QTARGETS, QATOM, QNULL, |
106 | QATOM_PAIR; | |
107 | ||
e6c7c988 | 108 | Lisp_Object QCOMPOUND_TEXT; /* This is a type of selection. */ |
5109c8dd | 109 | Lisp_Object QUTF8_STRING; /* This is a type of selection. */ |
e6c7c988 | 110 | |
5a79ea57 | 111 | Lisp_Object Qcompound_text_with_extensions; |
fbbe0ace | 112 | |
e57ad4d8 KH |
113 | static Lisp_Object Qforeign_selection; |
114 | ||
ede4db72 RS |
115 | /* If this is a smaller number than the max-request-size of the display, |
116 | emacs will use INCR selection transfer when the selection is larger | |
117 | than this. The max-request-size is usually around 64k, so if you want | |
1b65481e | 118 | emacs to use incremental selection transfers when the selection is |
ede4db72 | 119 | smaller than that, set this. I added this mostly for debugging the |
8f4f023f | 120 | incremental transfer stuff, but it might improve server performance. */ |
ede4db72 RS |
121 | #define MAX_SELECTION_QUANTUM 0xFFFFFF |
122 | ||
c3498e64 | 123 | #define SELECTION_QUANTUM(dpy) ((XMaxRequestSize(dpy) << 2) - 100) |
ede4db72 | 124 | |
7da64e5c | 125 | /* The timestamp of the last input event Emacs received from the X server. */ |
29674445 KH |
126 | /* Defined in keyboard.c. */ |
127 | extern unsigned long last_event_timestamp; | |
ede4db72 | 128 | |
00b3c7ac TT |
129 | /* This is an association list whose elements are of the form |
130 | ( SELECTION-NAME SELECTION-VALUE SELECTION-TIMESTAMP FRAME) | |
131 | SELECTION-NAME is a lisp symbol, whose name is the name of an X Atom. | |
132 | SELECTION-VALUE is the value that emacs owns for that selection. | |
133 | It may be any kind of Lisp object. | |
134 | SELECTION-TIMESTAMP is the time at which emacs began owning this selection, | |
135 | as a cons of two 16-bit numbers (making a 32 bit time.) | |
136 | FRAME is the frame for which we made the selection. | |
137 | If there is an entry in this alist, then it can be assumed that Emacs owns | |
138 | that selection. | |
139 | The only (eq) parts of this list that are visible from Lisp are the | |
140 | selection-values. */ | |
141 | static Lisp_Object Vselection_alist; | |
142 | ||
dd0fe424 KS |
143 | |
144 | \f | |
678b3958 KS |
145 | /* Define a queue to save up SELECTION_REQUEST_EVENT events for later |
146 | handling. */ | |
dd0fe424 KS |
147 | |
148 | struct selection_event_queue | |
149 | { | |
150 | struct input_event event; | |
151 | struct selection_event_queue *next; | |
152 | }; | |
153 | ||
154 | static struct selection_event_queue *selection_queue; | |
155 | ||
678b3958 | 156 | /* Nonzero means queue up SELECTION_REQUEST_EVENT events. */ |
dd0fe424 KS |
157 | |
158 | static int x_queue_selection_requests; | |
159 | ||
678b3958 | 160 | /* Queue up an SELECTION_REQUEST_EVENT *EVENT, to be processed later. */ |
dd0fe424 KS |
161 | |
162 | static void | |
971de7fb | 163 | x_queue_event (struct input_event *event) |
dd0fe424 KS |
164 | { |
165 | struct selection_event_queue *queue_tmp; | |
166 | ||
678b3958 KS |
167 | /* Don't queue repeated requests. |
168 | This only happens for large requests which uses the incremental protocol. */ | |
dd0fe424 KS |
169 | for (queue_tmp = selection_queue; queue_tmp; queue_tmp = queue_tmp->next) |
170 | { | |
72af86bd | 171 | if (!memcmp (&queue_tmp->event, event, sizeof (*event))) |
dd0fe424 | 172 | { |
678b3958 KS |
173 | TRACE1 ("DECLINE DUP SELECTION EVENT %08lx", (unsigned long)queue_tmp); |
174 | x_decline_selection_request (event); | |
dd0fe424 KS |
175 | return; |
176 | } | |
177 | } | |
178 | ||
179 | queue_tmp | |
180 | = (struct selection_event_queue *) xmalloc (sizeof (struct selection_event_queue)); | |
181 | ||
182 | if (queue_tmp != NULL) | |
183 | { | |
678b3958 | 184 | TRACE1 ("QUEUE SELECTION EVENT %08lx", (unsigned long)queue_tmp); |
dd0fe424 KS |
185 | queue_tmp->event = *event; |
186 | queue_tmp->next = selection_queue; | |
187 | selection_queue = queue_tmp; | |
188 | } | |
189 | } | |
190 | ||
678b3958 | 191 | /* Start queuing SELECTION_REQUEST_EVENT events. */ |
dd0fe424 KS |
192 | |
193 | static void | |
971de7fb | 194 | x_start_queuing_selection_requests (void) |
dd0fe424 KS |
195 | { |
196 | if (x_queue_selection_requests) | |
197 | abort (); | |
198 | ||
199 | x_queue_selection_requests++; | |
200 | TRACE1 ("x_start_queuing_selection_requests %d", x_queue_selection_requests); | |
201 | } | |
202 | ||
678b3958 | 203 | /* Stop queuing SELECTION_REQUEST_EVENT events. */ |
dd0fe424 KS |
204 | |
205 | static void | |
971de7fb | 206 | x_stop_queuing_selection_requests (void) |
dd0fe424 KS |
207 | { |
208 | TRACE1 ("x_stop_queuing_selection_requests %d", x_queue_selection_requests); | |
209 | --x_queue_selection_requests; | |
210 | ||
211 | /* Take all the queued events and put them back | |
212 | so that they get processed afresh. */ | |
213 | ||
214 | while (selection_queue != NULL) | |
215 | { | |
216 | struct selection_event_queue *queue_tmp = selection_queue; | |
678b3958 | 217 | TRACE1 ("RESTORE SELECTION EVENT %08lx", (unsigned long)queue_tmp); |
dd0fe424 KS |
218 | kbd_buffer_unget_event (&queue_tmp->event); |
219 | selection_queue = queue_tmp->next; | |
220 | xfree ((char *)queue_tmp); | |
221 | } | |
222 | } | |
223 | \f | |
224 | ||
1b65481e | 225 | /* This converts a Lisp symbol to a server Atom, avoiding a server |
ede4db72 RS |
226 | roundtrip whenever possible. */ |
227 | ||
228 | static Atom | |
971de7fb | 229 | symbol_to_x_atom (struct x_display_info *dpyinfo, Display *display, Lisp_Object sym) |
ede4db72 RS |
230 | { |
231 | Atom val; | |
232 | if (NILP (sym)) return 0; | |
233 | if (EQ (sym, QPRIMARY)) return XA_PRIMARY; | |
234 | if (EQ (sym, QSECONDARY)) return XA_SECONDARY; | |
235 | if (EQ (sym, QSTRING)) return XA_STRING; | |
236 | if (EQ (sym, QINTEGER)) return XA_INTEGER; | |
237 | if (EQ (sym, QATOM)) return XA_ATOM; | |
5c3a351a RS |
238 | if (EQ (sym, QCLIPBOARD)) return dpyinfo->Xatom_CLIPBOARD; |
239 | if (EQ (sym, QTIMESTAMP)) return dpyinfo->Xatom_TIMESTAMP; | |
240 | if (EQ (sym, QTEXT)) return dpyinfo->Xatom_TEXT; | |
e6c7c988 | 241 | if (EQ (sym, QCOMPOUND_TEXT)) return dpyinfo->Xatom_COMPOUND_TEXT; |
5109c8dd | 242 | if (EQ (sym, QUTF8_STRING)) return dpyinfo->Xatom_UTF8_STRING; |
5c3a351a RS |
243 | if (EQ (sym, QDELETE)) return dpyinfo->Xatom_DELETE; |
244 | if (EQ (sym, QMULTIPLE)) return dpyinfo->Xatom_MULTIPLE; | |
245 | if (EQ (sym, QINCR)) return dpyinfo->Xatom_INCR; | |
246 | if (EQ (sym, QEMACS_TMP)) return dpyinfo->Xatom_EMACS_TMP; | |
247 | if (EQ (sym, QTARGETS)) return dpyinfo->Xatom_TARGETS; | |
248 | if (EQ (sym, QNULL)) return dpyinfo->Xatom_NULL; | |
ede4db72 RS |
249 | if (!SYMBOLP (sym)) abort (); |
250 | ||
51b59d79 | 251 | TRACE1 (" XInternAtom %s", SSDATA (SYMBOL_NAME (sym))); |
ede4db72 | 252 | BLOCK_INPUT; |
51b59d79 | 253 | val = XInternAtom (display, SSDATA (SYMBOL_NAME (sym)), False); |
ede4db72 RS |
254 | UNBLOCK_INPUT; |
255 | return val; | |
256 | } | |
257 | ||
258 | ||
259 | /* This converts a server Atom to a Lisp symbol, avoiding server roundtrips | |
260 | and calls to intern whenever possible. */ | |
261 | ||
262 | static Lisp_Object | |
971de7fb | 263 | x_atom_to_symbol (Display *dpy, Atom atom) |
ede4db72 | 264 | { |
d9c0d4a3 | 265 | struct x_display_info *dpyinfo; |
ede4db72 RS |
266 | char *str; |
267 | Lisp_Object val; | |
1b65481e | 268 | |
d9c0d4a3 GM |
269 | if (! atom) |
270 | return Qnil; | |
1b65481e | 271 | |
7da64e5c RS |
272 | switch (atom) |
273 | { | |
274 | case XA_PRIMARY: | |
275 | return QPRIMARY; | |
276 | case XA_SECONDARY: | |
277 | return QSECONDARY; | |
278 | case XA_STRING: | |
279 | return QSTRING; | |
280 | case XA_INTEGER: | |
281 | return QINTEGER; | |
282 | case XA_ATOM: | |
283 | return QATOM; | |
7da64e5c RS |
284 | } |
285 | ||
d9c0d4a3 | 286 | dpyinfo = x_display_info_for_display (dpy); |
5c3a351a | 287 | if (atom == dpyinfo->Xatom_CLIPBOARD) |
7da64e5c | 288 | return QCLIPBOARD; |
5c3a351a | 289 | if (atom == dpyinfo->Xatom_TIMESTAMP) |
7da64e5c | 290 | return QTIMESTAMP; |
5c3a351a | 291 | if (atom == dpyinfo->Xatom_TEXT) |
7da64e5c | 292 | return QTEXT; |
e6c7c988 KH |
293 | if (atom == dpyinfo->Xatom_COMPOUND_TEXT) |
294 | return QCOMPOUND_TEXT; | |
5109c8dd KH |
295 | if (atom == dpyinfo->Xatom_UTF8_STRING) |
296 | return QUTF8_STRING; | |
5c3a351a | 297 | if (atom == dpyinfo->Xatom_DELETE) |
7da64e5c | 298 | return QDELETE; |
5c3a351a | 299 | if (atom == dpyinfo->Xatom_MULTIPLE) |
7da64e5c | 300 | return QMULTIPLE; |
5c3a351a | 301 | if (atom == dpyinfo->Xatom_INCR) |
7da64e5c | 302 | return QINCR; |
5c3a351a | 303 | if (atom == dpyinfo->Xatom_EMACS_TMP) |
7da64e5c | 304 | return QEMACS_TMP; |
5c3a351a | 305 | if (atom == dpyinfo->Xatom_TARGETS) |
7da64e5c | 306 | return QTARGETS; |
5c3a351a | 307 | if (atom == dpyinfo->Xatom_NULL) |
7da64e5c | 308 | return QNULL; |
ede4db72 RS |
309 | |
310 | BLOCK_INPUT; | |
d9c0d4a3 | 311 | str = XGetAtomName (dpy, atom); |
ede4db72 | 312 | UNBLOCK_INPUT; |
d9c0d4a3 | 313 | TRACE1 ("XGetAtomName --> %s", str); |
ede4db72 RS |
314 | if (! str) return Qnil; |
315 | val = intern (str); | |
316 | BLOCK_INPUT; | |
0158abbc | 317 | /* This was allocated by Xlib, so use XFree. */ |
ede4db72 RS |
318 | XFree (str); |
319 | UNBLOCK_INPUT; | |
320 | return val; | |
321 | } | |
8a89415e | 322 | \f |
ede4db72 | 323 | /* Do protocol to assert ourself as a selection owner. |
1b65481e | 324 | Update the Vselection_alist so that we can reply to later requests for |
ede4db72 RS |
325 | our selection. */ |
326 | ||
327 | static void | |
971de7fb | 328 | x_own_selection (Lisp_Object selection_name, Lisp_Object selection_value) |
ede4db72 | 329 | { |
378c33ca | 330 | struct frame *sf = SELECTED_FRAME (); |
428a555e KL |
331 | Window selecting_window; |
332 | Display *display; | |
7da64e5c | 333 | Time time = last_event_timestamp; |
ede4db72 | 334 | Atom selection_atom; |
428a555e | 335 | struct x_display_info *dpyinfo; |
ede4db72 | 336 | |
428a555e KL |
337 | if (! FRAME_X_P (sf)) |
338 | return; | |
339 | ||
340 | selecting_window = FRAME_X_WINDOW (sf); | |
341 | display = FRAME_X_DISPLAY (sf); | |
342 | dpyinfo = FRAME_X_DISPLAY_INFO (sf); | |
16041401 | 343 | |
b7826503 | 344 | CHECK_SYMBOL (selection_name); |
5c3a351a | 345 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection_name); |
ede4db72 RS |
346 | |
347 | BLOCK_INPUT; | |
9ba8e10d | 348 | x_catch_errors (display); |
ede4db72 | 349 | XSetSelectionOwner (display, selection_atom, selecting_window, time); |
a7b24d46 | 350 | x_check_errors (display, "Can't set selection: %s"); |
4545fa20 | 351 | x_uncatch_errors (); |
ede4db72 RS |
352 | UNBLOCK_INPUT; |
353 | ||
354 | /* Now update the local cache */ | |
355 | { | |
356 | Lisp_Object selection_time; | |
357 | Lisp_Object selection_data; | |
358 | Lisp_Object prev_value; | |
359 | ||
360 | selection_time = long_to_cons ((unsigned long) time); | |
16041401 CY |
361 | selection_data = list4 (selection_name, selection_value, |
362 | selection_time, selected_frame); | |
ede4db72 RS |
363 | prev_value = assq_no_quit (selection_name, Vselection_alist); |
364 | ||
365 | Vselection_alist = Fcons (selection_data, Vselection_alist); | |
366 | ||
367 | /* If we already owned the selection, remove the old selection data. | |
368 | Perhaps we should destructively modify it instead. | |
369 | Don't use Fdelq as that may QUIT. */ | |
370 | if (!NILP (prev_value)) | |
371 | { | |
372 | Lisp_Object rest; /* we know it's not the CAR, so it's easy. */ | |
99784d63 | 373 | for (rest = Vselection_alist; CONSP (rest); rest = XCDR (rest)) |
8e713be6 | 374 | if (EQ (prev_value, Fcar (XCDR (rest)))) |
ede4db72 | 375 | { |
f3fbd155 | 376 | XSETCDR (rest, Fcdr (XCDR (rest))); |
ede4db72 RS |
377 | break; |
378 | } | |
379 | } | |
380 | } | |
381 | } | |
382 | \f | |
383 | /* Given a selection-name and desired type, look up our local copy of | |
384 | the selection value and convert it to the type. | |
385 | The value is nil or a string. | |
5109c8dd KH |
386 | This function is used both for remote requests (LOCAL_REQUEST is zero) |
387 | and for local x-get-selection-internal (LOCAL_REQUEST is nonzero). | |
ede4db72 RS |
388 | |
389 | This calls random Lisp code, and may signal or gc. */ | |
390 | ||
391 | static Lisp_Object | |
971de7fb | 392 | x_get_local_selection (Lisp_Object selection_symbol, Lisp_Object target_type, int local_request) |
ede4db72 RS |
393 | { |
394 | Lisp_Object local_value; | |
395 | Lisp_Object handler_fn, value, type, check; | |
396 | int count; | |
397 | ||
398 | local_value = assq_no_quit (selection_symbol, Vselection_alist); | |
399 | ||
400 | if (NILP (local_value)) return Qnil; | |
401 | ||
402 | /* TIMESTAMP and MULTIPLE are special cases 'cause that's easiest. */ | |
403 | if (EQ (target_type, QTIMESTAMP)) | |
404 | { | |
405 | handler_fn = Qnil; | |
8e713be6 | 406 | value = XCAR (XCDR (XCDR (local_value))); |
ede4db72 RS |
407 | } |
408 | #if 0 | |
409 | else if (EQ (target_type, QDELETE)) | |
410 | { | |
411 | handler_fn = Qnil; | |
412 | Fx_disown_selection_internal | |
413 | (selection_symbol, | |
8e713be6 | 414 | XCAR (XCDR (XCDR (local_value)))); |
ede4db72 RS |
415 | value = QNULL; |
416 | } | |
417 | #endif | |
418 | ||
419 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
420 | else if (CONSP (target_type) | |
8e713be6 | 421 | && XCAR (target_type) == QMULTIPLE) |
ede4db72 | 422 | { |
9d2d1dd8 KH |
423 | Lisp_Object pairs; |
424 | int size; | |
ede4db72 | 425 | int i; |
8e713be6 | 426 | pairs = XCDR (target_type); |
9d2d1dd8 | 427 | size = XVECTOR (pairs)->size; |
ede4db72 RS |
428 | /* If the target is MULTIPLE, then target_type looks like |
429 | (MULTIPLE . [[SELECTION1 TARGET1] [SELECTION2 TARGET2] ... ]) | |
430 | We modify the second element of each pair in the vector and | |
431 | return it as [[SELECTION1 <value1>] [SELECTION2 <value2>] ... ] | |
432 | */ | |
433 | for (i = 0; i < size; i++) | |
434 | { | |
9d2d1dd8 KH |
435 | Lisp_Object pair; |
436 | pair = XVECTOR (pairs)->contents [i]; | |
ede4db72 RS |
437 | XVECTOR (pair)->contents [1] |
438 | = x_get_local_selection (XVECTOR (pair)->contents [0], | |
5109c8dd KH |
439 | XVECTOR (pair)->contents [1], |
440 | local_request); | |
ede4db72 RS |
441 | } |
442 | return pairs; | |
443 | } | |
444 | #endif | |
445 | else | |
446 | { | |
447 | /* Don't allow a quit within the converter. | |
448 | When the user types C-g, he would be surprised | |
449 | if by luck it came during a converter. */ | |
aed13378 | 450 | count = SPECPDL_INDEX (); |
ede4db72 RS |
451 | specbind (Qinhibit_quit, Qt); |
452 | ||
b7826503 | 453 | CHECK_SYMBOL (target_type); |
ede4db72 | 454 | handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist)); |
4f06187f RS |
455 | /* gcpro is not needed here since nothing but HANDLER_FN |
456 | is live, and that ought to be a symbol. */ | |
457 | ||
1eb4d468 RS |
458 | if (!NILP (handler_fn)) |
459 | value = call3 (handler_fn, | |
5109c8dd | 460 | selection_symbol, (local_request ? Qnil : target_type), |
8e713be6 | 461 | XCAR (XCDR (local_value))); |
1eb4d468 RS |
462 | else |
463 | value = Qnil; | |
ede4db72 RS |
464 | unbind_to (count, Qnil); |
465 | } | |
466 | ||
467 | /* Make sure this value is of a type that we could transmit | |
468 | to another X client. */ | |
a87ed99c | 469 | |
ede4db72 RS |
470 | check = value; |
471 | if (CONSP (value) | |
8e713be6 KR |
472 | && SYMBOLP (XCAR (value))) |
473 | type = XCAR (value), | |
474 | check = XCDR (value); | |
1b65481e | 475 | |
ede4db72 RS |
476 | if (STRINGP (check) |
477 | || VECTORP (check) | |
478 | || SYMBOLP (check) | |
7da64e5c | 479 | || INTEGERP (check) |
ede4db72 RS |
480 | || NILP (value)) |
481 | return value; | |
a87ed99c | 482 | /* Check for a value that cons_to_long could handle. */ |
ede4db72 | 483 | else if (CONSP (check) |
8e713be6 KR |
484 | && INTEGERP (XCAR (check)) |
485 | && (INTEGERP (XCDR (check)) | |
ede4db72 | 486 | || |
8e713be6 KR |
487 | (CONSP (XCDR (check)) |
488 | && INTEGERP (XCAR (XCDR (check))) | |
489 | && NILP (XCDR (XCDR (check)))))) | |
ede4db72 | 490 | return value; |
4d30ce50 KS |
491 | |
492 | signal_error ("Invalid data returned by selection-conversion function", | |
493 | list2 (handler_fn, value)); | |
ede4db72 RS |
494 | } |
495 | \f | |
496 | /* Subroutines of x_reply_selection_request. */ | |
497 | ||
5d0ba25b | 498 | /* Send a SelectionNotify event to the requestor with property=None, |
ede4db72 RS |
499 | meaning we were unable to do what they wanted. */ |
500 | ||
501 | static void | |
971de7fb | 502 | x_decline_selection_request (struct input_event *event) |
ede4db72 RS |
503 | { |
504 | XSelectionEvent reply; | |
1b65481e | 505 | |
ede4db72 RS |
506 | reply.type = SelectionNotify; |
507 | reply.display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 508 | reply.requestor = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
509 | reply.selection = SELECTION_EVENT_SELECTION (event); |
510 | reply.time = SELECTION_EVENT_TIME (event); | |
511 | reply.target = SELECTION_EVENT_TARGET (event); | |
512 | reply.property = None; | |
513 | ||
d9c0d4a3 GM |
514 | /* The reason for the error may be that the receiver has |
515 | died in the meantime. Handle that case. */ | |
ede4db72 | 516 | BLOCK_INPUT; |
9ba8e10d | 517 | x_catch_errors (reply.display); |
d9c0d4a3 | 518 | XSendEvent (reply.display, reply.requestor, False, 0L, (XEvent *) &reply); |
5c3a351a | 519 | XFlush (reply.display); |
4545fa20 | 520 | x_uncatch_errors (); |
ede4db72 RS |
521 | UNBLOCK_INPUT; |
522 | } | |
523 | ||
524 | /* This is the selection request currently being processed. | |
525 | It is set to zero when the request is fully processed. */ | |
526 | static struct input_event *x_selection_current_request; | |
527 | ||
ca29f2b8 GM |
528 | /* Display info in x_selection_request. */ |
529 | ||
530 | static struct x_display_info *selection_request_dpyinfo; | |
531 | ||
ede4db72 | 532 | /* Used as an unwind-protect clause so that, if a selection-converter signals |
2a1a4c9d | 533 | an error, we tell the requester that we were unable to do what they wanted |
ede4db72 RS |
534 | before we throw to top-level or go into the debugger or whatever. */ |
535 | ||
536 | static Lisp_Object | |
971de7fb | 537 | x_selection_request_lisp_error (Lisp_Object ignore) |
ede4db72 | 538 | { |
ca29f2b8 GM |
539 | if (x_selection_current_request != 0 |
540 | && selection_request_dpyinfo->display) | |
ede4db72 RS |
541 | x_decline_selection_request (x_selection_current_request); |
542 | return Qnil; | |
543 | } | |
c525d842 CY |
544 | |
545 | static Lisp_Object | |
971de7fb | 546 | x_catch_errors_unwind (Lisp_Object dummy) |
c525d842 CY |
547 | { |
548 | BLOCK_INPUT; | |
549 | x_uncatch_errors (); | |
550 | UNBLOCK_INPUT; | |
6f10509c | 551 | return Qnil; |
c525d842 | 552 | } |
ede4db72 | 553 | \f |
d1f21a66 RS |
554 | |
555 | /* This stuff is so that INCR selections are reentrant (that is, so we can | |
556 | be servicing multiple INCR selection requests simultaneously.) I haven't | |
557 | actually tested that yet. */ | |
558 | ||
559 | /* Keep a list of the property changes that are awaited. */ | |
560 | ||
561 | struct prop_location | |
562 | { | |
563 | int identifier; | |
564 | Display *display; | |
565 | Window window; | |
566 | Atom property; | |
567 | int desired_state; | |
568 | int arrived; | |
569 | struct prop_location *next; | |
570 | }; | |
571 | ||
971de7fb DN |
572 | static struct prop_location *expect_property_change (Display *display, Window window, Atom property, int state); |
573 | static void wait_for_property_change (struct prop_location *location); | |
574 | static void unexpect_property_change (struct prop_location *location); | |
575 | static int waiting_for_other_props_on_window (Display *display, Window window); | |
d1f21a66 RS |
576 | |
577 | static int prop_location_identifier; | |
578 | ||
579 | static Lisp_Object property_change_reply; | |
580 | ||
581 | static struct prop_location *property_change_reply_object; | |
582 | ||
583 | static struct prop_location *property_change_wait_list; | |
55b2d45d RS |
584 | |
585 | static Lisp_Object | |
971de7fb | 586 | queue_selection_requests_unwind (Lisp_Object tem) |
55b2d45d | 587 | { |
dd0fe424 | 588 | x_stop_queuing_selection_requests (); |
ab552306 | 589 | return Qnil; |
55b2d45d RS |
590 | } |
591 | ||
592 | /* Return some frame whose display info is DPYINFO. | |
593 | Return nil if there is none. */ | |
594 | ||
595 | static Lisp_Object | |
971de7fb | 596 | some_frame_on_display (struct x_display_info *dpyinfo) |
55b2d45d RS |
597 | { |
598 | Lisp_Object list, frame; | |
599 | ||
600 | FOR_EACH_FRAME (list, frame) | |
601 | { | |
428a555e KL |
602 | if (FRAME_X_P (XFRAME (frame)) |
603 | && FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
55b2d45d RS |
604 | return frame; |
605 | } | |
606 | ||
607 | return Qnil; | |
608 | } | |
d1f21a66 | 609 | \f |
ede4db72 RS |
610 | /* Send the reply to a selection request event EVENT. |
611 | TYPE is the type of selection data requested. | |
612 | DATA and SIZE describe the data to send, already converted. | |
613 | FORMAT is the unit-size (in bits) of the data to be transmitted. */ | |
614 | ||
46d47e41 | 615 | #ifdef TRACE_SELECTION |
ca7af97a | 616 | static int x_reply_selection_request_cnt; |
46d47e41 GM |
617 | #endif /* TRACE_SELECTION */ |
618 | ||
ede4db72 | 619 | static void |
971de7fb | 620 | x_reply_selection_request (struct input_event *event, int format, unsigned char *data, int size, Atom type) |
ede4db72 RS |
621 | { |
622 | XSelectionEvent reply; | |
623 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
5d0ba25b | 624 | Window window = SELECTION_EVENT_REQUESTOR (event); |
ede4db72 RS |
625 | int bytes_remaining; |
626 | int format_bytes = format/8; | |
627 | int max_bytes = SELECTION_QUANTUM (display); | |
5c3a351a | 628 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
9ba8e10d | 629 | int count = SPECPDL_INDEX (); |
ede4db72 RS |
630 | |
631 | if (max_bytes > MAX_SELECTION_QUANTUM) | |
632 | max_bytes = MAX_SELECTION_QUANTUM; | |
633 | ||
634 | reply.type = SelectionNotify; | |
635 | reply.display = display; | |
5d0ba25b | 636 | reply.requestor = window; |
ede4db72 RS |
637 | reply.selection = SELECTION_EVENT_SELECTION (event); |
638 | reply.time = SELECTION_EVENT_TIME (event); | |
639 | reply.target = SELECTION_EVENT_TARGET (event); | |
640 | reply.property = SELECTION_EVENT_PROPERTY (event); | |
641 | if (reply.property == None) | |
642 | reply.property = reply.target; | |
643 | ||
afe1529d | 644 | BLOCK_INPUT; |
c525d842 CY |
645 | /* The protected block contains wait_for_property_change, which can |
646 | run random lisp code (process handlers) or signal. Therefore, we | |
647 | put the x_uncatch_errors call in an unwind. */ | |
648 | record_unwind_protect (x_catch_errors_unwind, Qnil); | |
9ba8e10d | 649 | x_catch_errors (display); |
ede4db72 | 650 | |
9c3ad9e1 JD |
651 | #ifdef TRACE_SELECTION |
652 | { | |
9c3ad9e1 JD |
653 | char *sel = XGetAtomName (display, reply.selection); |
654 | char *tgt = XGetAtomName (display, reply.target); | |
ca7af97a | 655 | TRACE3 ("%s, target %s (%d)", sel, tgt, ++x_reply_selection_request_cnt); |
9c3ad9e1 JD |
656 | if (sel) XFree (sel); |
657 | if (tgt) XFree (tgt); | |
658 | } | |
659 | #endif /* TRACE_SELECTION */ | |
660 | ||
ede4db72 RS |
661 | /* Store the data on the requested property. |
662 | If the selection is large, only store the first N bytes of it. | |
663 | */ | |
664 | bytes_remaining = size * format_bytes; | |
665 | if (bytes_remaining <= max_bytes) | |
666 | { | |
667 | /* Send all the data at once, with minimal handshaking. */ | |
d9c0d4a3 | 668 | TRACE1 ("Sending all %d bytes", bytes_remaining); |
ede4db72 RS |
669 | XChangeProperty (display, window, reply.property, type, format, |
670 | PropModeReplace, data, size); | |
671 | /* At this point, the selection was successfully stored; ack it. */ | |
2f65feb6 | 672 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
ede4db72 RS |
673 | } |
674 | else | |
675 | { | |
676 | /* Send an INCR selection. */ | |
d1f21a66 | 677 | struct prop_location *wait_object; |
afe1529d | 678 | int had_errors; |
55b2d45d | 679 | Lisp_Object frame; |
ede4db72 | 680 | |
55b2d45d RS |
681 | frame = some_frame_on_display (dpyinfo); |
682 | ||
683 | /* If the display no longer has frames, we can't expect | |
684 | to get many more selection requests from it, so don't | |
685 | bother trying to queue them. */ | |
686 | if (!NILP (frame)) | |
687 | { | |
dd0fe424 | 688 | x_start_queuing_selection_requests (); |
55b2d45d RS |
689 | |
690 | record_unwind_protect (queue_selection_requests_unwind, | |
dd0fe424 | 691 | Qnil); |
55b2d45d | 692 | } |
2f65feb6 | 693 | |
19126e11 | 694 | if (x_window_to_frame (dpyinfo, window)) /* #### debug */ |
606140dd | 695 | error ("Attempt to transfer an INCR to ourself!"); |
1b65481e | 696 | |
d9c0d4a3 GM |
697 | TRACE2 ("Start sending %d bytes incrementally (%s)", |
698 | bytes_remaining, XGetAtomName (display, reply.property)); | |
d1f21a66 RS |
699 | wait_object = expect_property_change (display, window, reply.property, |
700 | PropertyDelete); | |
ede4db72 | 701 | |
d9c0d4a3 GM |
702 | TRACE1 ("Set %s to number of bytes to send", |
703 | XGetAtomName (display, reply.property)); | |
e22cf39c JD |
704 | { |
705 | /* XChangeProperty expects an array of long even if long is more than | |
706 | 32 bits. */ | |
707 | long value[1]; | |
708 | ||
709 | value[0] = bytes_remaining; | |
710 | XChangeProperty (display, window, reply.property, dpyinfo->Xatom_INCR, | |
711 | 32, PropModeReplace, | |
712 | (unsigned char *) value, 1); | |
713 | } | |
714 | ||
ede4db72 | 715 | XSelectInput (display, window, PropertyChangeMask); |
1b65481e | 716 | |
ede4db72 | 717 | /* Tell 'em the INCR data is there... */ |
d9c0d4a3 | 718 | TRACE0 ("Send SelectionNotify event"); |
55b2d45d | 719 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
5c3a351a | 720 | XFlush (display); |
afe1529d RS |
721 | |
722 | had_errors = x_had_errors_p (display); | |
2f65feb6 | 723 | UNBLOCK_INPUT; |
ede4db72 | 724 | |
2a1a4c9d | 725 | /* First, wait for the requester to ack by deleting the property. |
ede4db72 | 726 | This can run random lisp code (process handlers) or signal. */ |
afe1529d | 727 | if (! had_errors) |
d9c0d4a3 GM |
728 | { |
729 | TRACE1 ("Waiting for ACK (deletion of %s)", | |
730 | XGetAtomName (display, reply.property)); | |
731 | wait_for_property_change (wait_object); | |
732 | } | |
dd0fe424 KS |
733 | else |
734 | unexpect_property_change (wait_object); | |
ede4db72 | 735 | |
d9c0d4a3 | 736 | TRACE0 ("Got ACK"); |
ede4db72 RS |
737 | while (bytes_remaining) |
738 | { | |
e22cf39c JD |
739 | int i = ((bytes_remaining < max_bytes) |
740 | ? bytes_remaining | |
5a9c35e5 | 741 | : max_bytes) / format_bytes; |
2f65feb6 RS |
742 | |
743 | BLOCK_INPUT; | |
744 | ||
d1f21a66 RS |
745 | wait_object |
746 | = expect_property_change (display, window, reply.property, | |
747 | PropertyDelete); | |
d9c0d4a3 | 748 | |
5a9c35e5 | 749 | TRACE1 ("Sending increment of %d elements", i); |
d9c0d4a3 GM |
750 | TRACE1 ("Set %s to increment data", |
751 | XGetAtomName (display, reply.property)); | |
1b65481e | 752 | |
ede4db72 RS |
753 | /* Append the next chunk of data to the property. */ |
754 | XChangeProperty (display, window, reply.property, type, format, | |
5a9c35e5 AS |
755 | PropModeAppend, data, i); |
756 | bytes_remaining -= i * format_bytes; | |
757 | if (format == 32) | |
758 | data += i * sizeof (long); | |
759 | else | |
760 | data += i * format_bytes; | |
5c3a351a | 761 | XFlush (display); |
afe1529d | 762 | had_errors = x_had_errors_p (display); |
2f65feb6 | 763 | UNBLOCK_INPUT; |
ede4db72 | 764 | |
afe1529d RS |
765 | if (had_errors) |
766 | break; | |
767 | ||
2a1a4c9d | 768 | /* Now wait for the requester to ack this chunk by deleting the |
db9cd97a | 769 | property. This can run random lisp code or signal. */ |
d9c0d4a3 GM |
770 | TRACE1 ("Waiting for increment ACK (deletion of %s)", |
771 | XGetAtomName (display, reply.property)); | |
d1f21a66 | 772 | wait_for_property_change (wait_object); |
ede4db72 | 773 | } |
1b65481e | 774 | |
d9c0d4a3 GM |
775 | /* Now write a zero-length chunk to the property to tell the |
776 | requester that we're done. */ | |
2f65feb6 | 777 | BLOCK_INPUT; |
ede4db72 RS |
778 | if (! waiting_for_other_props_on_window (display, window)) |
779 | XSelectInput (display, window, 0L); | |
780 | ||
d9c0d4a3 GM |
781 | TRACE1 ("Set %s to a 0-length chunk to indicate EOF", |
782 | XGetAtomName (display, reply.property)); | |
ede4db72 RS |
783 | XChangeProperty (display, window, reply.property, type, format, |
784 | PropModeReplace, data, 0); | |
d9c0d4a3 | 785 | TRACE0 ("Done sending incrementally"); |
ede4db72 | 786 | } |
afe1529d | 787 | |
ceabd272 | 788 | /* rms, 2003-01-03: I think I have fixed this bug. */ |
47a6ac17 GM |
789 | /* The window we're communicating with may have been deleted |
790 | in the meantime (that's a real situation from a bug report). | |
791 | In this case, there may be events in the event queue still | |
792 | refering to the deleted window, and we'll get a BadWindow error | |
793 | in XTread_socket when processing the events. I don't have | |
794 | an idea how to fix that. gerd, 2001-01-98. */ | |
844fc085 JD |
795 | /* 2004-09-10: XSync and UNBLOCK so that possible protocol errors are |
796 | delivered before uncatch errors. */ | |
797 | XSync (display, False); | |
afe1529d | 798 | UNBLOCK_INPUT; |
0608b1a0 JD |
799 | |
800 | /* GTK queues events in addition to the queue in Xlib. So we | |
801 | UNBLOCK to enter the event loop and get possible errors delivered, | |
802 | and then BLOCK again because x_uncatch_errors requires it. */ | |
803 | BLOCK_INPUT; | |
c525d842 | 804 | /* This calls x_uncatch_errors. */ |
9ba8e10d | 805 | unbind_to (count, Qnil); |
afe1529d | 806 | UNBLOCK_INPUT; |
ede4db72 RS |
807 | } |
808 | \f | |
809 | /* Handle a SelectionRequest event EVENT. | |
810 | This is called from keyboard.c when such an event is found in the queue. */ | |
811 | ||
dd0fe424 | 812 | static void |
971de7fb | 813 | x_handle_selection_request (struct input_event *event) |
ede4db72 RS |
814 | { |
815 | struct gcpro gcpro1, gcpro2, gcpro3; | |
9d2d1dd8 | 816 | Lisp_Object local_selection_data; |
ede4db72 | 817 | Lisp_Object selection_symbol; |
9d2d1dd8 KH |
818 | Lisp_Object target_symbol; |
819 | Lisp_Object converted_selection; | |
ede4db72 | 820 | Time local_selection_time; |
9d2d1dd8 | 821 | Lisp_Object successful_p; |
ede4db72 | 822 | int count; |
5c3a351a RS |
823 | struct x_display_info *dpyinfo |
824 | = x_display_info_for_display (SELECTION_EVENT_DISPLAY (event)); | |
ede4db72 | 825 | |
678b3958 KS |
826 | TRACE2 ("x_handle_selection_request, from=0x%08lx time=%lu", |
827 | (unsigned long) SELECTION_EVENT_REQUESTOR (event), | |
828 | (unsigned long) SELECTION_EVENT_TIME (event)); | |
dd0fe424 | 829 | |
9d2d1dd8 KH |
830 | local_selection_data = Qnil; |
831 | target_symbol = Qnil; | |
832 | converted_selection = Qnil; | |
833 | successful_p = Qnil; | |
834 | ||
ede4db72 RS |
835 | GCPRO3 (local_selection_data, converted_selection, target_symbol); |
836 | ||
d9c0d4a3 | 837 | selection_symbol = x_atom_to_symbol (SELECTION_EVENT_DISPLAY (event), |
ede4db72 RS |
838 | SELECTION_EVENT_SELECTION (event)); |
839 | ||
840 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
ede4db72 RS |
841 | |
842 | if (NILP (local_selection_data)) | |
843 | { | |
844 | /* Someone asked for the selection, but we don't have it any more. | |
845 | */ | |
846 | x_decline_selection_request (event); | |
847 | goto DONE; | |
848 | } | |
849 | ||
850 | local_selection_time = (Time) | |
8e713be6 | 851 | cons_to_long (XCAR (XCDR (XCDR (local_selection_data)))); |
ede4db72 RS |
852 | |
853 | if (SELECTION_EVENT_TIME (event) != CurrentTime | |
7da64e5c | 854 | && local_selection_time > SELECTION_EVENT_TIME (event)) |
ede4db72 RS |
855 | { |
856 | /* Someone asked for the selection, and we have one, but not the one | |
857 | they're looking for. | |
858 | */ | |
859 | x_decline_selection_request (event); | |
860 | goto DONE; | |
861 | } | |
862 | ||
ede4db72 | 863 | x_selection_current_request = event; |
331379bf | 864 | count = SPECPDL_INDEX (); |
ca29f2b8 | 865 | selection_request_dpyinfo = dpyinfo; |
ede4db72 RS |
866 | record_unwind_protect (x_selection_request_lisp_error, Qnil); |
867 | ||
d9c0d4a3 | 868 | target_symbol = x_atom_to_symbol (SELECTION_EVENT_DISPLAY (event), |
ede4db72 RS |
869 | SELECTION_EVENT_TARGET (event)); |
870 | ||
871 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
872 | if (EQ (target_symbol, QMULTIPLE)) | |
873 | target_symbol = fetch_multiple_target (event); | |
874 | #endif | |
1b65481e | 875 | |
ede4db72 | 876 | /* Convert lisp objects back into binary data */ |
1b65481e | 877 | |
ede4db72 | 878 | converted_selection |
5109c8dd | 879 | = x_get_local_selection (selection_symbol, target_symbol, 0); |
1b65481e | 880 | |
ede4db72 RS |
881 | if (! NILP (converted_selection)) |
882 | { | |
883 | unsigned char *data; | |
884 | unsigned int size; | |
885 | int format; | |
886 | Atom type; | |
aca39f42 RS |
887 | int nofree; |
888 | ||
866f8518 JD |
889 | if (CONSP (converted_selection) && NILP (XCDR (converted_selection))) |
890 | { | |
891 | x_decline_selection_request (event); | |
892 | goto DONE2; | |
893 | } | |
894 | ||
2f65feb6 RS |
895 | lisp_data_to_selection_data (SELECTION_EVENT_DISPLAY (event), |
896 | converted_selection, | |
aca39f42 | 897 | &data, &type, &size, &format, &nofree); |
1b65481e | 898 | |
ede4db72 RS |
899 | x_reply_selection_request (event, format, data, size, type); |
900 | successful_p = Qt; | |
901 | ||
902 | /* Indicate we have successfully processed this event. */ | |
7da64e5c | 903 | x_selection_current_request = 0; |
ede4db72 | 904 | |
4feb31b2 | 905 | /* Use xfree, not XFree, because lisp_data_to_selection_data |
0158abbc | 906 | calls xmalloc itself. */ |
aca39f42 | 907 | if (!nofree) |
4feb31b2 | 908 | xfree (data); |
ede4db72 | 909 | } |
866f8518 JD |
910 | |
911 | DONE2: | |
ede4db72 RS |
912 | unbind_to (count, Qnil); |
913 | ||
914 | DONE: | |
915 | ||
ede4db72 RS |
916 | /* Let random lisp code notice that the selection has been asked for. */ |
917 | { | |
9d2d1dd8 | 918 | Lisp_Object rest; |
c917a8de | 919 | rest = Vx_sent_selection_functions; |
ede4db72 RS |
920 | if (!EQ (rest, Qunbound)) |
921 | for (; CONSP (rest); rest = Fcdr (rest)) | |
922 | call3 (Fcar (rest), selection_symbol, target_symbol, successful_p); | |
923 | } | |
4f06187f RS |
924 | |
925 | UNGCPRO; | |
ede4db72 RS |
926 | } |
927 | \f | |
e18e6130 | 928 | /* Handle a SelectionClear event EVENT, which indicates that some |
ede4db72 RS |
929 | client cleared out our previously asserted selection. |
930 | This is called from keyboard.c when such an event is found in the queue. */ | |
931 | ||
dd0fe424 | 932 | static void |
971de7fb | 933 | x_handle_selection_clear (struct input_event *event) |
ede4db72 RS |
934 | { |
935 | Display *display = SELECTION_EVENT_DISPLAY (event); | |
936 | Atom selection = SELECTION_EVENT_SELECTION (event); | |
937 | Time changed_owner_time = SELECTION_EVENT_TIME (event); | |
1b65481e | 938 | |
ede4db72 RS |
939 | Lisp_Object selection_symbol, local_selection_data; |
940 | Time local_selection_time; | |
5c3a351a | 941 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
e18e6130 RS |
942 | struct x_display_info *t_dpyinfo; |
943 | ||
dd0fe424 KS |
944 | TRACE0 ("x_handle_selection_clear"); |
945 | ||
e18e6130 RS |
946 | /* If the new selection owner is also Emacs, |
947 | don't clear the new selection. */ | |
948 | BLOCK_INPUT; | |
949 | /* Check each display on the same terminal, | |
950 | to see if this Emacs job now owns the selection | |
951 | through that display. */ | |
952 | for (t_dpyinfo = x_display_list; t_dpyinfo; t_dpyinfo = t_dpyinfo->next) | |
6ed8eeff | 953 | if (t_dpyinfo->terminal->kboard == dpyinfo->terminal->kboard) |
e18e6130 RS |
954 | { |
955 | Window owner_window | |
956 | = XGetSelectionOwner (t_dpyinfo->display, selection); | |
957 | if (x_window_to_frame (t_dpyinfo, owner_window) != 0) | |
958 | { | |
959 | UNBLOCK_INPUT; | |
960 | return; | |
961 | } | |
962 | } | |
963 | UNBLOCK_INPUT; | |
16041401 | 964 | |
d9c0d4a3 | 965 | selection_symbol = x_atom_to_symbol (display, selection); |
ede4db72 RS |
966 | |
967 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); | |
968 | ||
969 | /* Well, we already believe that we don't own it, so that's just fine. */ | |
970 | if (NILP (local_selection_data)) return; | |
971 | ||
972 | local_selection_time = (Time) | |
8e713be6 | 973 | cons_to_long (XCAR (XCDR (XCDR (local_selection_data)))); |
ede4db72 RS |
974 | |
975 | /* This SelectionClear is for a selection that we no longer own, so we can | |
976 | disregard it. (That is, we have reasserted the selection since this | |
977 | request was generated.) */ | |
978 | ||
979 | if (changed_owner_time != CurrentTime | |
980 | && local_selection_time > changed_owner_time) | |
981 | return; | |
982 | ||
983 | /* Otherwise, we're really honest and truly being told to drop it. | |
984 | Don't use Fdelq as that may QUIT;. */ | |
985 | ||
986 | if (EQ (local_selection_data, Fcar (Vselection_alist))) | |
987 | Vselection_alist = Fcdr (Vselection_alist); | |
988 | else | |
989 | { | |
990 | Lisp_Object rest; | |
99784d63 | 991 | for (rest = Vselection_alist; CONSP (rest); rest = XCDR (rest)) |
8e713be6 | 992 | if (EQ (local_selection_data, Fcar (XCDR (rest)))) |
ede4db72 | 993 | { |
f3fbd155 | 994 | XSETCDR (rest, Fcdr (XCDR (rest))); |
ede4db72 RS |
995 | break; |
996 | } | |
997 | } | |
998 | ||
999 | /* Let random lisp code notice that the selection has been stolen. */ | |
1000 | ||
1001 | { | |
d1f21a66 | 1002 | Lisp_Object rest; |
c917a8de | 1003 | rest = Vx_lost_selection_functions; |
ede4db72 | 1004 | if (!EQ (rest, Qunbound)) |
d1f21a66 RS |
1005 | { |
1006 | for (; CONSP (rest); rest = Fcdr (rest)) | |
1007 | call1 (Fcar (rest), selection_symbol); | |
7c6b2ea4 | 1008 | prepare_menu_bars (); |
3007ebfb | 1009 | redisplay_preserve_echo_area (20); |
d1f21a66 | 1010 | } |
ede4db72 RS |
1011 | } |
1012 | } | |
1013 | ||
dd0fe424 | 1014 | void |
971de7fb | 1015 | x_handle_selection_event (struct input_event *event) |
dd0fe424 KS |
1016 | { |
1017 | TRACE0 ("x_handle_selection_event"); | |
1018 | ||
1019 | if (event->kind == SELECTION_REQUEST_EVENT) | |
1020 | { | |
1021 | if (x_queue_selection_requests) | |
1022 | x_queue_event (event); | |
1023 | else | |
1024 | x_handle_selection_request (event); | |
1025 | } | |
1026 | else | |
1027 | x_handle_selection_clear (event); | |
1028 | } | |
1029 | ||
1030 | ||
118bd841 RS |
1031 | /* Clear all selections that were made from frame F. |
1032 | We do this when about to delete a frame. */ | |
1033 | ||
1034 | void | |
971de7fb | 1035 | x_clear_frame_selections (FRAME_PTR f) |
118bd841 RS |
1036 | { |
1037 | Lisp_Object frame; | |
1038 | Lisp_Object rest; | |
1039 | ||
90851bbe | 1040 | XSETFRAME (frame, f); |
118bd841 RS |
1041 | |
1042 | /* Otherwise, we're really honest and truly being told to drop it. | |
1043 | Don't use Fdelq as that may QUIT;. */ | |
1044 | ||
0d199f9c RS |
1045 | /* Delete elements from the beginning of Vselection_alist. */ |
1046 | while (!NILP (Vselection_alist) | |
1047 | && EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (Vselection_alist))))))) | |
1048 | { | |
1049 | /* Let random Lisp code notice that the selection has been stolen. */ | |
1050 | Lisp_Object hooks, selection_symbol; | |
1051 | ||
c917a8de | 1052 | hooks = Vx_lost_selection_functions; |
0d199f9c RS |
1053 | selection_symbol = Fcar (Fcar (Vselection_alist)); |
1054 | ||
1055 | if (!EQ (hooks, Qunbound)) | |
1056 | { | |
1057 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
1058 | call1 (Fcar (hooks), selection_symbol); | |
996b804d MB |
1059 | #if 0 /* This can crash when deleting a frame |
1060 | from x_connection_closed. Anyway, it seems unnecessary; | |
1061 | something else should cause a redisplay. */ | |
3007ebfb | 1062 | redisplay_preserve_echo_area (21); |
996b804d | 1063 | #endif |
0d199f9c RS |
1064 | } |
1065 | ||
1066 | Vselection_alist = Fcdr (Vselection_alist); | |
1067 | } | |
1068 | ||
1069 | /* Delete elements after the beginning of Vselection_alist. */ | |
99784d63 | 1070 | for (rest = Vselection_alist; CONSP (rest); rest = XCDR (rest)) |
8e713be6 | 1071 | if (EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (XCDR (rest)))))))) |
118bd841 RS |
1072 | { |
1073 | /* Let random Lisp code notice that the selection has been stolen. */ | |
1074 | Lisp_Object hooks, selection_symbol; | |
1075 | ||
c917a8de | 1076 | hooks = Vx_lost_selection_functions; |
8e713be6 | 1077 | selection_symbol = Fcar (Fcar (XCDR (rest))); |
118bd841 RS |
1078 | |
1079 | if (!EQ (hooks, Qunbound)) | |
1080 | { | |
1081 | for (; CONSP (hooks); hooks = Fcdr (hooks)) | |
1082 | call1 (Fcar (hooks), selection_symbol); | |
996b804d | 1083 | #if 0 /* See above */ |
3007ebfb | 1084 | redisplay_preserve_echo_area (22); |
996b804d | 1085 | #endif |
118bd841 | 1086 | } |
f3fbd155 | 1087 | XSETCDR (rest, Fcdr (XCDR (rest))); |
118bd841 RS |
1088 | break; |
1089 | } | |
1090 | } | |
ede4db72 | 1091 | \f |
ede4db72 RS |
1092 | /* Nonzero if any properties for DISPLAY and WINDOW |
1093 | are on the list of what we are waiting for. */ | |
1094 | ||
1095 | static int | |
971de7fb | 1096 | waiting_for_other_props_on_window (Display *display, Window window) |
ede4db72 RS |
1097 | { |
1098 | struct prop_location *rest = property_change_wait_list; | |
1099 | while (rest) | |
1100 | if (rest->display == display && rest->window == window) | |
1101 | return 1; | |
1102 | else | |
1103 | rest = rest->next; | |
1104 | return 0; | |
1105 | } | |
1106 | ||
1107 | /* Add an entry to the list of property changes we are waiting for. | |
1108 | DISPLAY, WINDOW, PROPERTY, STATE describe what we will wait for. | |
1109 | The return value is a number that uniquely identifies | |
1110 | this awaited property change. */ | |
1111 | ||
d1f21a66 | 1112 | static struct prop_location * |
971de7fb | 1113 | expect_property_change (Display *display, Window window, Atom property, int state) |
ede4db72 | 1114 | { |
d9c0d4a3 | 1115 | struct prop_location *pl = (struct prop_location *) xmalloc (sizeof *pl); |
2f65feb6 | 1116 | pl->identifier = ++prop_location_identifier; |
ede4db72 RS |
1117 | pl->display = display; |
1118 | pl->window = window; | |
1119 | pl->property = property; | |
1120 | pl->desired_state = state; | |
1121 | pl->next = property_change_wait_list; | |
d1f21a66 | 1122 | pl->arrived = 0; |
ede4db72 | 1123 | property_change_wait_list = pl; |
d1f21a66 | 1124 | return pl; |
ede4db72 RS |
1125 | } |
1126 | ||
1127 | /* Delete an entry from the list of property changes we are waiting for. | |
2f65feb6 | 1128 | IDENTIFIER is the number that uniquely identifies the entry. */ |
ede4db72 RS |
1129 | |
1130 | static void | |
971de7fb | 1131 | unexpect_property_change (struct prop_location *location) |
ede4db72 RS |
1132 | { |
1133 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
1134 | while (rest) | |
1135 | { | |
d1f21a66 | 1136 | if (rest == location) |
ede4db72 RS |
1137 | { |
1138 | if (prev) | |
1139 | prev->next = rest->next; | |
1140 | else | |
1141 | property_change_wait_list = rest->next; | |
4feb31b2 | 1142 | xfree (rest); |
ede4db72 RS |
1143 | return; |
1144 | } | |
1145 | prev = rest; | |
1146 | rest = rest->next; | |
1147 | } | |
1148 | } | |
1149 | ||
2f65feb6 RS |
1150 | /* Remove the property change expectation element for IDENTIFIER. */ |
1151 | ||
1152 | static Lisp_Object | |
971de7fb | 1153 | wait_for_property_change_unwind (Lisp_Object loc) |
2f65feb6 | 1154 | { |
dd0fe424 KS |
1155 | struct prop_location *location = XSAVE_VALUE (loc)->pointer; |
1156 | ||
1157 | unexpect_property_change (location); | |
1158 | if (location == property_change_reply_object) | |
1159 | property_change_reply_object = 0; | |
ab552306 | 1160 | return Qnil; |
2f65feb6 RS |
1161 | } |
1162 | ||
ede4db72 | 1163 | /* Actually wait for a property change. |
2f65feb6 | 1164 | IDENTIFIER should be the value that expect_property_change returned. */ |
ede4db72 RS |
1165 | |
1166 | static void | |
971de7fb | 1167 | wait_for_property_change (struct prop_location *location) |
ede4db72 | 1168 | { |
2f65feb6 | 1169 | int secs, usecs; |
aed13378 | 1170 | int count = SPECPDL_INDEX (); |
d1f21a66 | 1171 | |
dd0fe424 KS |
1172 | if (property_change_reply_object) |
1173 | abort (); | |
2f65feb6 RS |
1174 | |
1175 | /* Make sure to do unexpect_property_change if we quit or err. */ | |
dd0fe424 KS |
1176 | record_unwind_protect (wait_for_property_change_unwind, |
1177 | make_save_value (location, 0)); | |
2f65feb6 | 1178 | |
f3fbd155 | 1179 | XSETCAR (property_change_reply, Qnil); |
afe1529d | 1180 | property_change_reply_object = location; |
dd0fe424 | 1181 | |
afe1529d RS |
1182 | /* If the event we are waiting for arrives beyond here, it will set |
1183 | property_change_reply, because property_change_reply_object says so. */ | |
d1f21a66 RS |
1184 | if (! location->arrived) |
1185 | { | |
d1f21a66 RS |
1186 | secs = x_selection_timeout / 1000; |
1187 | usecs = (x_selection_timeout % 1000) * 1000; | |
d9c0d4a3 | 1188 | TRACE2 (" Waiting %d secs, %d usecs", secs, usecs); |
d64b707c KS |
1189 | wait_reading_process_output (secs, usecs, 0, 0, |
1190 | property_change_reply, NULL, 0); | |
d1f21a66 | 1191 | |
8e713be6 | 1192 | if (NILP (XCAR (property_change_reply))) |
d9c0d4a3 GM |
1193 | { |
1194 | TRACE0 (" Timed out"); | |
1195 | error ("Timed out waiting for property-notify event"); | |
1196 | } | |
d1f21a66 | 1197 | } |
2f65feb6 RS |
1198 | |
1199 | unbind_to (count, Qnil); | |
ede4db72 RS |
1200 | } |
1201 | ||
1202 | /* Called from XTread_socket in response to a PropertyNotify event. */ | |
1203 | ||
1204 | void | |
971de7fb | 1205 | x_handle_property_notify (XPropertyEvent *event) |
ede4db72 RS |
1206 | { |
1207 | struct prop_location *prev = 0, *rest = property_change_wait_list; | |
d9c0d4a3 | 1208 | |
ede4db72 RS |
1209 | while (rest) |
1210 | { | |
dd0fe424 KS |
1211 | if (!rest->arrived |
1212 | && rest->property == event->atom | |
ede4db72 RS |
1213 | && rest->window == event->window |
1214 | && rest->display == event->display | |
1215 | && rest->desired_state == event->state) | |
1216 | { | |
d9c0d4a3 GM |
1217 | TRACE2 ("Expected %s of property %s", |
1218 | (event->state == PropertyDelete ? "deletion" : "change"), | |
1219 | XGetAtomName (event->display, event->atom)); | |
ede4db72 | 1220 | |
d1f21a66 RS |
1221 | rest->arrived = 1; |
1222 | ||
ede4db72 RS |
1223 | /* If this is the one wait_for_property_change is waiting for, |
1224 | tell it to wake up. */ | |
d1f21a66 | 1225 | if (rest == property_change_reply_object) |
f3fbd155 | 1226 | XSETCAR (property_change_reply, Qt); |
ede4db72 | 1227 | |
ede4db72 RS |
1228 | return; |
1229 | } | |
1b65481e | 1230 | |
ede4db72 RS |
1231 | prev = rest; |
1232 | rest = rest->next; | |
1233 | } | |
ede4db72 RS |
1234 | } |
1235 | ||
1236 | ||
1237 | \f | |
1238 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1239 | ||
1240 | static Lisp_Object | |
1241 | fetch_multiple_target (event) | |
1242 | XSelectionRequestEvent *event; | |
1243 | { | |
1244 | Display *display = event->display; | |
5d0ba25b | 1245 | Window window = event->requestor; |
ede4db72 RS |
1246 | Atom target = event->target; |
1247 | Atom selection_atom = event->selection; | |
1248 | int result; | |
1249 | ||
1250 | return | |
1251 | Fcons (QMULTIPLE, | |
1252 | x_get_window_property_as_lisp_data (display, window, target, | |
1253 | QMULTIPLE, selection_atom)); | |
1254 | } | |
1255 | ||
1256 | static Lisp_Object | |
1257 | copy_multiple_data (obj) | |
1258 | Lisp_Object obj; | |
1259 | { | |
1260 | Lisp_Object vec; | |
1261 | int i; | |
1262 | int size; | |
1263 | if (CONSP (obj)) | |
8e713be6 | 1264 | return Fcons (XCAR (obj), copy_multiple_data (XCDR (obj))); |
1b65481e | 1265 | |
b7826503 | 1266 | CHECK_VECTOR (obj); |
ede4db72 RS |
1267 | vec = Fmake_vector (size = XVECTOR (obj)->size, Qnil); |
1268 | for (i = 0; i < size; i++) | |
1269 | { | |
1270 | Lisp_Object vec2 = XVECTOR (obj)->contents [i]; | |
b7826503 | 1271 | CHECK_VECTOR (vec2); |
ede4db72 RS |
1272 | if (XVECTOR (vec2)->size != 2) |
1273 | /* ??? Confusing error message */ | |
4d30ce50 | 1274 | signal_error ("Vectors must be of length 2", vec2); |
ede4db72 RS |
1275 | XVECTOR (vec)->contents [i] = Fmake_vector (2, Qnil); |
1276 | XVECTOR (XVECTOR (vec)->contents [i])->contents [0] | |
1277 | = XVECTOR (vec2)->contents [0]; | |
1278 | XVECTOR (XVECTOR (vec)->contents [i])->contents [1] | |
1279 | = XVECTOR (vec2)->contents [1]; | |
1280 | } | |
1281 | return vec; | |
1282 | } | |
1283 | ||
1284 | #endif | |
1285 | ||
1286 | \f | |
1287 | /* Variables for communication with x_handle_selection_notify. */ | |
1288 | static Atom reading_which_selection; | |
1289 | static Lisp_Object reading_selection_reply; | |
1290 | static Window reading_selection_window; | |
1291 | ||
1292 | /* Do protocol to read selection-data from the server. | |
1293 | Converts this to Lisp data and returns it. */ | |
1294 | ||
1295 | static Lisp_Object | |
971de7fb | 1296 | x_get_foreign_selection (Lisp_Object selection_symbol, Lisp_Object target_type, Lisp_Object time_stamp) |
ede4db72 | 1297 | { |
378c33ca | 1298 | struct frame *sf = SELECTED_FRAME (); |
428a555e KL |
1299 | Window requestor_window; |
1300 | Display *display; | |
1301 | struct x_display_info *dpyinfo; | |
5d0ba25b | 1302 | Time requestor_time = last_event_timestamp; |
428a555e KL |
1303 | Atom target_property; |
1304 | Atom selection_atom; | |
ede4db72 | 1305 | Atom type_atom; |
80da0190 | 1306 | int secs, usecs; |
c525d842 | 1307 | int count = SPECPDL_INDEX (); |
55b2d45d | 1308 | Lisp_Object frame; |
ede4db72 | 1309 | |
428a555e KL |
1310 | if (! FRAME_X_P (sf)) |
1311 | return Qnil; | |
1312 | ||
1313 | requestor_window = FRAME_X_WINDOW (sf); | |
1314 | display = FRAME_X_DISPLAY (sf); | |
1315 | dpyinfo = FRAME_X_DISPLAY_INFO (sf); | |
1316 | target_property = dpyinfo->Xatom_EMACS_TMP; | |
1317 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection_symbol); | |
1318 | ||
ede4db72 | 1319 | if (CONSP (target_type)) |
8e713be6 | 1320 | type_atom = symbol_to_x_atom (dpyinfo, display, XCAR (target_type)); |
ede4db72 | 1321 | else |
5c3a351a | 1322 | type_atom = symbol_to_x_atom (dpyinfo, display, target_type); |
ede4db72 | 1323 | |
3a42401d JD |
1324 | if (! NILP (time_stamp)) |
1325 | { | |
1326 | if (CONSP (time_stamp)) | |
1327 | requestor_time = (Time) cons_to_long (time_stamp); | |
1328 | else if (INTEGERP (time_stamp)) | |
1329 | requestor_time = (Time) XUINT (time_stamp); | |
1330 | else if (FLOATP (time_stamp)) | |
ff59904a | 1331 | requestor_time = (Time) XFLOAT_DATA (time_stamp); |
3a42401d JD |
1332 | else |
1333 | error ("TIME_STAMP must be cons or number"); | |
1334 | } | |
1335 | ||
ede4db72 | 1336 | BLOCK_INPUT; |
1b65481e | 1337 | |
c525d842 CY |
1338 | /* The protected block contains wait_reading_process_output, which |
1339 | can run random lisp code (process handlers) or signal. | |
1340 | Therefore, we put the x_uncatch_errors call in an unwind. */ | |
1341 | record_unwind_protect (x_catch_errors_unwind, Qnil); | |
9ba8e10d | 1342 | x_catch_errors (display); |
1b65481e | 1343 | |
d9c0d4a3 GM |
1344 | TRACE2 ("Get selection %s, type %s", |
1345 | XGetAtomName (display, type_atom), | |
1346 | XGetAtomName (display, target_property)); | |
1347 | ||
ede4db72 | 1348 | XConvertSelection (display, selection_atom, type_atom, target_property, |
5d0ba25b | 1349 | requestor_window, requestor_time); |
5c3a351a | 1350 | XFlush (display); |
ede4db72 RS |
1351 | |
1352 | /* Prepare to block until the reply has been read. */ | |
5d0ba25b | 1353 | reading_selection_window = requestor_window; |
ede4db72 | 1354 | reading_which_selection = selection_atom; |
f3fbd155 | 1355 | XSETCAR (reading_selection_reply, Qnil); |
55b2d45d RS |
1356 | |
1357 | frame = some_frame_on_display (dpyinfo); | |
1358 | ||
1359 | /* If the display no longer has frames, we can't expect | |
1360 | to get many more selection requests from it, so don't | |
1361 | bother trying to queue them. */ | |
1362 | if (!NILP (frame)) | |
1363 | { | |
dd0fe424 | 1364 | x_start_queuing_selection_requests (); |
55b2d45d RS |
1365 | |
1366 | record_unwind_protect (queue_selection_requests_unwind, | |
dd0fe424 | 1367 | Qnil); |
55b2d45d | 1368 | } |
ede4db72 RS |
1369 | UNBLOCK_INPUT; |
1370 | ||
80da0190 RS |
1371 | /* This allows quits. Also, don't wait forever. */ |
1372 | secs = x_selection_timeout / 1000; | |
1373 | usecs = (x_selection_timeout % 1000) * 1000; | |
d9c0d4a3 | 1374 | TRACE1 (" Start waiting %d secs for SelectionNotify", secs); |
d64b707c KS |
1375 | wait_reading_process_output (secs, usecs, 0, 0, |
1376 | reading_selection_reply, NULL, 0); | |
d9c0d4a3 | 1377 | TRACE1 (" Got event = %d", !NILP (XCAR (reading_selection_reply))); |
ede4db72 | 1378 | |
7c6b2ea4 | 1379 | BLOCK_INPUT; |
c525d842 CY |
1380 | if (x_had_errors_p (display)) |
1381 | error ("Cannot get selection"); | |
1382 | /* This calls x_uncatch_errors. */ | |
9ba8e10d | 1383 | unbind_to (count, Qnil); |
7c6b2ea4 RS |
1384 | UNBLOCK_INPUT; |
1385 | ||
8e713be6 | 1386 | if (NILP (XCAR (reading_selection_reply))) |
606140dd | 1387 | error ("Timed out waiting for reply from selection owner"); |
8e713be6 | 1388 | if (EQ (XCAR (reading_selection_reply), Qlambda)) |
12061f06 | 1389 | return Qnil; |
ede4db72 RS |
1390 | |
1391 | /* Otherwise, the selection is waiting for us on the requested property. */ | |
1392 | return | |
5d0ba25b | 1393 | x_get_window_property_as_lisp_data (display, requestor_window, |
ede4db72 RS |
1394 | target_property, target_type, |
1395 | selection_atom); | |
1396 | } | |
1397 | \f | |
1398 | /* Subroutines of x_get_window_property_as_lisp_data */ | |
1399 | ||
4feb31b2 | 1400 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1401 | |
ede4db72 | 1402 | static void |
d5a3eaaf AS |
1403 | x_get_window_property (Display *display, Window window, Atom property, |
1404 | unsigned char **data_ret, int *bytes_ret, | |
1405 | Atom *actual_type_ret, int *actual_format_ret, | |
1406 | unsigned long *actual_size_ret, int delete_p) | |
ede4db72 RS |
1407 | { |
1408 | int total_size; | |
1409 | unsigned long bytes_remaining; | |
1410 | int offset = 0; | |
1411 | unsigned char *tmp_data = 0; | |
1412 | int result; | |
1413 | int buffer_size = SELECTION_QUANTUM (display); | |
1b65481e | 1414 | |
d9c0d4a3 GM |
1415 | if (buffer_size > MAX_SELECTION_QUANTUM) |
1416 | buffer_size = MAX_SELECTION_QUANTUM; | |
1b65481e | 1417 | |
ede4db72 | 1418 | BLOCK_INPUT; |
1b65481e | 1419 | |
ede4db72 RS |
1420 | /* First probe the thing to find out how big it is. */ |
1421 | result = XGetWindowProperty (display, window, property, | |
137edb72 | 1422 | 0L, 0L, False, AnyPropertyType, |
ede4db72 RS |
1423 | actual_type_ret, actual_format_ret, |
1424 | actual_size_ret, | |
1425 | &bytes_remaining, &tmp_data); | |
ede4db72 RS |
1426 | if (result != Success) |
1427 | { | |
2f65feb6 | 1428 | UNBLOCK_INPUT; |
ede4db72 RS |
1429 | *data_ret = 0; |
1430 | *bytes_ret = 0; | |
1431 | return; | |
1432 | } | |
1b65481e | 1433 | |
0158abbc RS |
1434 | /* This was allocated by Xlib, so use XFree. */ |
1435 | XFree ((char *) tmp_data); | |
1b65481e | 1436 | |
ede4db72 RS |
1437 | if (*actual_type_ret == None || *actual_format_ret == 0) |
1438 | { | |
2f65feb6 | 1439 | UNBLOCK_INPUT; |
ede4db72 RS |
1440 | return; |
1441 | } | |
1442 | ||
1443 | total_size = bytes_remaining + 1; | |
1444 | *data_ret = (unsigned char *) xmalloc (total_size); | |
1b65481e | 1445 | |
2a1a4c9d | 1446 | /* Now read, until we've gotten it all. */ |
ede4db72 RS |
1447 | while (bytes_remaining) |
1448 | { | |
d9c0d4a3 | 1449 | #ifdef TRACE_SELECTION |
ede4db72 RS |
1450 | int last = bytes_remaining; |
1451 | #endif | |
1452 | result | |
1453 | = XGetWindowProperty (display, window, property, | |
137edb72 | 1454 | (long)offset/4, (long)buffer_size/4, |
2f65feb6 | 1455 | False, |
ede4db72 RS |
1456 | AnyPropertyType, |
1457 | actual_type_ret, actual_format_ret, | |
1458 | actual_size_ret, &bytes_remaining, &tmp_data); | |
d9c0d4a3 GM |
1459 | |
1460 | TRACE2 ("Read %ld bytes from property %s", | |
1461 | last - bytes_remaining, | |
1462 | XGetAtomName (display, property)); | |
1463 | ||
ede4db72 RS |
1464 | /* If this doesn't return Success at this point, it means that |
1465 | some clod deleted the selection while we were in the midst of | |
d9c0d4a3 GM |
1466 | reading it. Deal with that, I guess.... */ |
1467 | if (result != Success) | |
1468 | break; | |
e22cf39c JD |
1469 | |
1470 | /* The man page for XGetWindowProperty says: | |
1471 | "If the returned format is 32, the returned data is represented | |
1472 | as a long array and should be cast to that type to obtain the | |
1473 | elements." | |
1474 | This applies even if long is more than 32 bits, the X library | |
1475 | converts from 32 bit elements received from the X server to long | |
72af86bd | 1476 | and passes the long array to us. Thus, for that case memcpy can not |
e22cf39c JD |
1477 | be used. We convert to a 32 bit type here, because so much code |
1478 | assume on that. | |
1479 | ||
1480 | The bytes and offsets passed to XGetWindowProperty refers to the | |
1481 | property and those are indeed in 32 bit quantities if format is 32. */ | |
1482 | ||
1483 | if (*actual_format_ret == 32 && *actual_format_ret < BITS_PER_LONG) | |
1484 | { | |
1485 | unsigned long i; | |
1486 | int *idata = (int *) ((*data_ret) + offset); | |
1487 | long *ldata = (long *) tmp_data; | |
1488 | ||
1489 | for (i = 0; i < *actual_size_ret; ++i) | |
1490 | { | |
1491 | idata[i]= (int) ldata[i]; | |
1492 | offset += 4; | |
1493 | } | |
1494 | } | |
1495 | else | |
1496 | { | |
1497 | *actual_size_ret *= *actual_format_ret / 8; | |
72af86bd | 1498 | memcpy ((*data_ret) + offset, tmp_data, *actual_size_ret); |
e22cf39c JD |
1499 | offset += *actual_size_ret; |
1500 | } | |
1b65481e | 1501 | |
0158abbc RS |
1502 | /* This was allocated by Xlib, so use XFree. */ |
1503 | XFree ((char *) tmp_data); | |
ede4db72 | 1504 | } |
2f65feb6 | 1505 | |
5c3a351a | 1506 | XFlush (display); |
ede4db72 RS |
1507 | UNBLOCK_INPUT; |
1508 | *bytes_ret = offset; | |
1509 | } | |
1510 | \f | |
4feb31b2 | 1511 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1512 | |
ede4db72 | 1513 | static void |
d5a3eaaf AS |
1514 | receive_incremental_selection (Display *display, Window window, Atom property, |
1515 | Lisp_Object target_type, | |
1516 | unsigned int min_size_bytes, | |
1517 | unsigned char **data_ret, int *size_bytes_ret, | |
1518 | Atom *type_ret, int *format_ret, | |
1519 | unsigned long *size_ret) | |
ede4db72 RS |
1520 | { |
1521 | int offset = 0; | |
d1f21a66 | 1522 | struct prop_location *wait_object; |
ede4db72 RS |
1523 | *size_bytes_ret = min_size_bytes; |
1524 | *data_ret = (unsigned char *) xmalloc (*size_bytes_ret); | |
d9c0d4a3 GM |
1525 | |
1526 | TRACE1 ("Read %d bytes incrementally", min_size_bytes); | |
2f65feb6 RS |
1527 | |
1528 | /* At this point, we have read an INCR property. | |
1529 | Delete the property to ack it. | |
1530 | (But first, prepare to receive the next event in this handshake.) | |
ede4db72 RS |
1531 | |
1532 | Now, we must loop, waiting for the sending window to put a value on | |
1533 | that property, then reading the property, then deleting it to ack. | |
1534 | We are done when the sender places a property of length 0. | |
1535 | */ | |
2f65feb6 RS |
1536 | BLOCK_INPUT; |
1537 | XSelectInput (display, window, STANDARD_EVENT_SET | PropertyChangeMask); | |
d9c0d4a3 | 1538 | TRACE1 (" Delete property %s", |
dd0fe424 | 1539 | SDATA (SYMBOL_NAME (x_atom_to_symbol (display, property)))); |
2f65feb6 | 1540 | XDeleteProperty (display, window, property); |
d9c0d4a3 | 1541 | TRACE1 (" Expect new value of property %s", |
dd0fe424 | 1542 | SDATA (SYMBOL_NAME (x_atom_to_symbol (display, property)))); |
d1f21a66 RS |
1543 | wait_object = expect_property_change (display, window, property, |
1544 | PropertyNewValue); | |
5c3a351a | 1545 | XFlush (display); |
2f65feb6 RS |
1546 | UNBLOCK_INPUT; |
1547 | ||
ede4db72 RS |
1548 | while (1) |
1549 | { | |
1550 | unsigned char *tmp_data; | |
1551 | int tmp_size_bytes; | |
d9c0d4a3 GM |
1552 | |
1553 | TRACE0 (" Wait for property change"); | |
d1f21a66 | 1554 | wait_for_property_change (wait_object); |
1b65481e | 1555 | |
ede4db72 | 1556 | /* expect it again immediately, because x_get_window_property may |
2a1a4c9d | 1557 | .. no it won't, I don't get it. |
d9c0d4a3 GM |
1558 | .. Ok, I get it now, the Xt code that implements INCR is broken. */ |
1559 | TRACE0 (" Get property value"); | |
ede4db72 RS |
1560 | x_get_window_property (display, window, property, |
1561 | &tmp_data, &tmp_size_bytes, | |
1562 | type_ret, format_ret, size_ret, 1); | |
1563 | ||
d9c0d4a3 GM |
1564 | TRACE1 (" Read increment of %d bytes", tmp_size_bytes); |
1565 | ||
ede4db72 RS |
1566 | if (tmp_size_bytes == 0) /* we're done */ |
1567 | { | |
d9c0d4a3 GM |
1568 | TRACE0 ("Done reading incrementally"); |
1569 | ||
2f65feb6 RS |
1570 | if (! waiting_for_other_props_on_window (display, window)) |
1571 | XSelectInput (display, window, STANDARD_EVENT_SET); | |
4feb31b2 | 1572 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1573 | calls xmalloc itself. */ |
70fdbb46 | 1574 | xfree (tmp_data); |
ede4db72 RS |
1575 | break; |
1576 | } | |
2f65feb6 RS |
1577 | |
1578 | BLOCK_INPUT; | |
d9c0d4a3 GM |
1579 | TRACE1 (" ACK by deleting property %s", |
1580 | XGetAtomName (display, property)); | |
2f65feb6 | 1581 | XDeleteProperty (display, window, property); |
d1f21a66 RS |
1582 | wait_object = expect_property_change (display, window, property, |
1583 | PropertyNewValue); | |
5c3a351a | 1584 | XFlush (display); |
2f65feb6 RS |
1585 | UNBLOCK_INPUT; |
1586 | ||
ede4db72 RS |
1587 | if (*size_bytes_ret < offset + tmp_size_bytes) |
1588 | { | |
ede4db72 RS |
1589 | *size_bytes_ret = offset + tmp_size_bytes; |
1590 | *data_ret = (unsigned char *) xrealloc (*data_ret, *size_bytes_ret); | |
1591 | } | |
1b65481e | 1592 | |
72af86bd | 1593 | memcpy ((*data_ret) + offset, tmp_data, tmp_size_bytes); |
ede4db72 | 1594 | offset += tmp_size_bytes; |
1b65481e | 1595 | |
4feb31b2 | 1596 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1597 | calls xmalloc itself. */ |
4feb31b2 | 1598 | xfree (tmp_data); |
ede4db72 RS |
1599 | } |
1600 | } | |
d9c0d4a3 | 1601 | |
ede4db72 RS |
1602 | \f |
1603 | /* Once a requested selection is "ready" (we got a SelectionNotify event), | |
1604 | fetch value from property PROPERTY of X window WINDOW on display DISPLAY. | |
1605 | TARGET_TYPE and SELECTION_ATOM are used in error message if this fails. */ | |
1606 | ||
1607 | static Lisp_Object | |
d5a3eaaf AS |
1608 | x_get_window_property_as_lisp_data (Display *display, Window window, |
1609 | Atom property, | |
1610 | Lisp_Object target_type, | |
1611 | Atom selection_atom) | |
ede4db72 RS |
1612 | { |
1613 | Atom actual_type; | |
1614 | int actual_format; | |
1615 | unsigned long actual_size; | |
1616 | unsigned char *data = 0; | |
1617 | int bytes = 0; | |
1618 | Lisp_Object val; | |
5c3a351a | 1619 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1620 | |
d9c0d4a3 GM |
1621 | TRACE0 ("Reading selection data"); |
1622 | ||
ede4db72 RS |
1623 | x_get_window_property (display, window, property, &data, &bytes, |
1624 | &actual_type, &actual_format, &actual_size, 1); | |
1625 | if (! data) | |
1626 | { | |
1627 | int there_is_a_selection_owner; | |
1628 | BLOCK_INPUT; | |
1629 | there_is_a_selection_owner | |
1630 | = XGetSelectionOwner (display, selection_atom); | |
1631 | UNBLOCK_INPUT; | |
4d30ce50 KS |
1632 | if (there_is_a_selection_owner) |
1633 | signal_error ("Selection owner couldn't convert", | |
1634 | actual_type | |
1635 | ? list2 (target_type, | |
1636 | x_atom_to_symbol (display, actual_type)) | |
1637 | : target_type); | |
1638 | else | |
1639 | signal_error ("No selection", | |
1640 | x_atom_to_symbol (display, selection_atom)); | |
ede4db72 | 1641 | } |
1b65481e | 1642 | |
5c3a351a | 1643 | if (actual_type == dpyinfo->Xatom_INCR) |
ede4db72 RS |
1644 | { |
1645 | /* That wasn't really the data, just the beginning. */ | |
1646 | ||
1647 | unsigned int min_size_bytes = * ((unsigned int *) data); | |
1648 | BLOCK_INPUT; | |
4feb31b2 | 1649 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1650 | calls xmalloc itself. */ |
4feb31b2 | 1651 | xfree ((char *) data); |
ede4db72 RS |
1652 | UNBLOCK_INPUT; |
1653 | receive_incremental_selection (display, window, property, target_type, | |
1654 | min_size_bytes, &data, &bytes, | |
1655 | &actual_type, &actual_format, | |
1656 | &actual_size); | |
1657 | } | |
1658 | ||
2f65feb6 | 1659 | BLOCK_INPUT; |
d9c0d4a3 | 1660 | TRACE1 (" Delete property %s", XGetAtomName (display, property)); |
2f65feb6 | 1661 | XDeleteProperty (display, window, property); |
5c3a351a | 1662 | XFlush (display); |
2f65feb6 RS |
1663 | UNBLOCK_INPUT; |
1664 | ||
ede4db72 RS |
1665 | /* It's been read. Now convert it to a lisp object in some semi-rational |
1666 | manner. */ | |
1667 | val = selection_data_to_lisp_data (display, data, bytes, | |
1668 | actual_type, actual_format); | |
1b65481e | 1669 | |
4feb31b2 | 1670 | /* Use xfree, not XFree, because x_get_window_property |
0158abbc | 1671 | calls xmalloc itself. */ |
4feb31b2 | 1672 | xfree ((char *) data); |
ede4db72 RS |
1673 | return val; |
1674 | } | |
1675 | \f | |
1676 | /* These functions convert from the selection data read from the server into | |
1677 | something that we can use from Lisp, and vice versa. | |
1678 | ||
1679 | Type: Format: Size: Lisp Type: | |
1680 | ----- ------- ----- ----------- | |
1681 | * 8 * String | |
1682 | ATOM 32 1 Symbol | |
1683 | ATOM 32 > 1 Vector of Symbols | |
1684 | * 16 1 Integer | |
1685 | * 16 > 1 Vector of Integers | |
1686 | * 32 1 if <=16 bits: Integer | |
1687 | if > 16 bits: Cons of top16, bot16 | |
1688 | * 32 > 1 Vector of the above | |
1689 | ||
1690 | When converting a Lisp number to C, it is assumed to be of format 16 if | |
1691 | it is an integer, and of format 32 if it is a cons of two integers. | |
1692 | ||
1693 | When converting a vector of numbers from Lisp to C, it is assumed to be | |
1694 | of format 16 if every element in the vector is an integer, and is assumed | |
1695 | to be of format 32 if any element is a cons of two integers. | |
1696 | ||
1697 | When converting an object to C, it may be of the form (SYMBOL . <data>) | |
1698 | where SYMBOL is what we should claim that the type is. Format and | |
b8d6f4af JD |
1699 | representation are as above. |
1700 | ||
1701 | Important: When format is 32, data should contain an array of int, | |
1702 | not an array of long as the X library returns. This makes a difference | |
1703 | when sizeof(long) != sizeof(int). */ | |
ede4db72 RS |
1704 | |
1705 | ||
1706 | ||
1707 | static Lisp_Object | |
eec47d6b DN |
1708 | selection_data_to_lisp_data (Display *display, const unsigned char *data, |
1709 | int size, Atom type, int format) | |
ede4db72 | 1710 | { |
5c3a351a | 1711 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
ede4db72 | 1712 | |
5c3a351a | 1713 | if (type == dpyinfo->Xatom_NULL) |
ede4db72 RS |
1714 | return QNULL; |
1715 | ||
1716 | /* Convert any 8-bit data to a string, for compactness. */ | |
1717 | else if (format == 8) | |
e6c7c988 | 1718 | { |
e57ad4d8 KH |
1719 | Lisp_Object str, lispy_type; |
1720 | ||
1721 | str = make_unibyte_string ((char *) data, size); | |
1722 | /* Indicate that this string is from foreign selection by a text | |
1723 | property `foreign-selection' so that the caller of | |
1724 | x-get-selection-internal (usually x-get-selection) can know | |
1725 | that the string must be decode. */ | |
1726 | if (type == dpyinfo->Xatom_COMPOUND_TEXT) | |
1727 | lispy_type = QCOMPOUND_TEXT; | |
1728 | else if (type == dpyinfo->Xatom_UTF8_STRING) | |
1729 | lispy_type = QUTF8_STRING; | |
e6c7c988 | 1730 | else |
e57ad4d8 KH |
1731 | lispy_type = QSTRING; |
1732 | Fput_text_property (make_number (0), make_number (size), | |
1733 | Qforeign_selection, lispy_type, str); | |
e6c7c988 KH |
1734 | return str; |
1735 | } | |
ede4db72 RS |
1736 | /* Convert a single atom to a Lisp_Symbol. Convert a set of atoms to |
1737 | a vector of symbols. | |
1738 | */ | |
1739 | else if (type == XA_ATOM) | |
1740 | { | |
1741 | int i; | |
b8d6f4af JD |
1742 | /* On a 64 bit machine sizeof(Atom) == sizeof(long) == 8. |
1743 | But the callers of these function has made sure the data for | |
1744 | format == 32 is an array of int. Thus, use int instead | |
1745 | of Atom. */ | |
1746 | int *idata = (int *) data; | |
1747 | ||
1748 | if (size == sizeof (int)) | |
1749 | return x_atom_to_symbol (display, (Atom) idata[0]); | |
ede4db72 RS |
1750 | else |
1751 | { | |
b8d6f4af | 1752 | Lisp_Object v = Fmake_vector (make_number (size / sizeof (int)), |
e607a484 | 1753 | make_number (0)); |
b8d6f4af | 1754 | for (i = 0; i < size / sizeof (int); i++) |
e607a484 | 1755 | Faset (v, make_number (i), |
b8d6f4af | 1756 | x_atom_to_symbol (display, (Atom) idata[i])); |
ede4db72 RS |
1757 | return v; |
1758 | } | |
1759 | } | |
1760 | ||
1ad08acd RS |
1761 | /* Convert a single 16-bit number or a small 32-bit number to a Lisp_Int. |
1762 | If the number is 32 bits and won't fit in a Lisp_Int, | |
1763 | convert it to a cons of integers, 16 bits in each half. | |
ede4db72 | 1764 | */ |
2f51feb8 AS |
1765 | else if (format == 32 && size == sizeof (int)) |
1766 | return long_to_cons (((unsigned int *) data) [0]); | |
ede4db72 RS |
1767 | else if (format == 16 && size == sizeof (short)) |
1768 | return make_number ((int) (((unsigned short *) data) [0])); | |
1769 | ||
1770 | /* Convert any other kind of data to a vector of numbers, represented | |
1771 | as above (as an integer, or a cons of two 16 bit integers.) | |
1772 | */ | |
1773 | else if (format == 16) | |
1774 | { | |
1775 | int i; | |
937a3875 RS |
1776 | Lisp_Object v; |
1777 | v = Fmake_vector (make_number (size / 2), make_number (0)); | |
1778 | for (i = 0; i < size / 2; i++) | |
ede4db72 RS |
1779 | { |
1780 | int j = (int) ((unsigned short *) data) [i]; | |
e607a484 | 1781 | Faset (v, make_number (i), make_number (j)); |
ede4db72 RS |
1782 | } |
1783 | return v; | |
1784 | } | |
1785 | else | |
1786 | { | |
1787 | int i; | |
e607a484 | 1788 | Lisp_Object v = Fmake_vector (make_number (size / 4), make_number (0)); |
ede4db72 RS |
1789 | for (i = 0; i < size / 4; i++) |
1790 | { | |
2f51feb8 | 1791 | unsigned int j = ((unsigned int *) data) [i]; |
e607a484 | 1792 | Faset (v, make_number (i), long_to_cons (j)); |
ede4db72 RS |
1793 | } |
1794 | return v; | |
1795 | } | |
1796 | } | |
1797 | ||
1798 | ||
4feb31b2 | 1799 | /* Use xfree, not XFree, to free the data obtained with this function. */ |
0158abbc | 1800 | |
ede4db72 | 1801 | static void |
d5a3eaaf AS |
1802 | lisp_data_to_selection_data (Display *display, Lisp_Object obj, |
1803 | unsigned char **data_ret, Atom *type_ret, | |
1804 | unsigned int *size_ret, | |
1805 | int *format_ret, int *nofree_ret) | |
ede4db72 RS |
1806 | { |
1807 | Lisp_Object type = Qnil; | |
5c3a351a | 1808 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
aca39f42 RS |
1809 | |
1810 | *nofree_ret = 0; | |
1811 | ||
8e713be6 | 1812 | if (CONSP (obj) && SYMBOLP (XCAR (obj))) |
ede4db72 | 1813 | { |
8e713be6 KR |
1814 | type = XCAR (obj); |
1815 | obj = XCDR (obj); | |
1816 | if (CONSP (obj) && NILP (XCDR (obj))) | |
1817 | obj = XCAR (obj); | |
ede4db72 RS |
1818 | } |
1819 | ||
1820 | if (EQ (obj, QNULL) || (EQ (type, QNULL))) | |
1821 | { /* This is not the same as declining */ | |
1822 | *format_ret = 32; | |
1823 | *size_ret = 0; | |
1824 | *data_ret = 0; | |
1825 | type = QNULL; | |
1826 | } | |
1827 | else if (STRINGP (obj)) | |
1828 | { | |
1bd70c6e KH |
1829 | if (SCHARS (obj) < SBYTES (obj)) |
1830 | /* OBJ is a multibyte string containing a non-ASCII char. */ | |
4d30ce50 | 1831 | signal_error ("Non-ASCII string must be encoded in advance", obj); |
7b9ae523 | 1832 | if (NILP (type)) |
5109c8dd KH |
1833 | type = QSTRING; |
1834 | *format_ret = 8; | |
1835 | *size_ret = SBYTES (obj); | |
1836 | *data_ret = SDATA (obj); | |
1837 | *nofree_ret = 1; | |
ede4db72 RS |
1838 | } |
1839 | else if (SYMBOLP (obj)) | |
1840 | { | |
1841 | *format_ret = 32; | |
1842 | *size_ret = 1; | |
1843 | *data_ret = (unsigned char *) xmalloc (sizeof (Atom) + 1); | |
1844 | (*data_ret) [sizeof (Atom)] = 0; | |
5c3a351a | 1845 | (*(Atom **) data_ret) [0] = symbol_to_x_atom (dpyinfo, display, obj); |
ede4db72 RS |
1846 | if (NILP (type)) type = QATOM; |
1847 | } | |
7da64e5c | 1848 | else if (INTEGERP (obj) |
ede4db72 RS |
1849 | && XINT (obj) < 0xFFFF |
1850 | && XINT (obj) > -0xFFFF) | |
1851 | { | |
1852 | *format_ret = 16; | |
1853 | *size_ret = 1; | |
1854 | *data_ret = (unsigned char *) xmalloc (sizeof (short) + 1); | |
1855 | (*data_ret) [sizeof (short)] = 0; | |
1856 | (*(short **) data_ret) [0] = (short) XINT (obj); | |
1857 | if (NILP (type)) type = QINTEGER; | |
1858 | } | |
a87ed99c | 1859 | else if (INTEGERP (obj) |
8e713be6 KR |
1860 | || (CONSP (obj) && INTEGERP (XCAR (obj)) |
1861 | && (INTEGERP (XCDR (obj)) | |
1862 | || (CONSP (XCDR (obj)) | |
1863 | && INTEGERP (XCAR (XCDR (obj))))))) | |
ede4db72 RS |
1864 | { |
1865 | *format_ret = 32; | |
1866 | *size_ret = 1; | |
1867 | *data_ret = (unsigned char *) xmalloc (sizeof (long) + 1); | |
1868 | (*data_ret) [sizeof (long)] = 0; | |
1869 | (*(unsigned long **) data_ret) [0] = cons_to_long (obj); | |
1870 | if (NILP (type)) type = QINTEGER; | |
1871 | } | |
1872 | else if (VECTORP (obj)) | |
1873 | { | |
1874 | /* Lisp_Vectors may represent a set of ATOMs; | |
1875 | a set of 16 or 32 bit INTEGERs; | |
1876 | or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...] | |
1877 | */ | |
1878 | int i; | |
1879 | ||
1880 | if (SYMBOLP (XVECTOR (obj)->contents [0])) | |
1881 | /* This vector is an ATOM set */ | |
1882 | { | |
1883 | if (NILP (type)) type = QATOM; | |
1884 | *size_ret = XVECTOR (obj)->size; | |
1885 | *format_ret = 32; | |
1886 | *data_ret = (unsigned char *) xmalloc ((*size_ret) * sizeof (Atom)); | |
1887 | for (i = 0; i < *size_ret; i++) | |
1888 | if (SYMBOLP (XVECTOR (obj)->contents [i])) | |
1889 | (*(Atom **) data_ret) [i] | |
5c3a351a | 1890 | = symbol_to_x_atom (dpyinfo, display, XVECTOR (obj)->contents [i]); |
ede4db72 | 1891 | else |
4d30ce50 | 1892 | signal_error ("All elements of selection vector must have same type", obj); |
ede4db72 RS |
1893 | } |
1894 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
1895 | else if (VECTORP (XVECTOR (obj)->contents [0])) | |
1896 | /* This vector is an ATOM_PAIR set */ | |
1897 | { | |
1898 | if (NILP (type)) type = QATOM_PAIR; | |
1899 | *size_ret = XVECTOR (obj)->size; | |
1900 | *format_ret = 32; | |
1901 | *data_ret = (unsigned char *) | |
1902 | xmalloc ((*size_ret) * sizeof (Atom) * 2); | |
1903 | for (i = 0; i < *size_ret; i++) | |
1904 | if (VECTORP (XVECTOR (obj)->contents [i])) | |
1905 | { | |
1906 | Lisp_Object pair = XVECTOR (obj)->contents [i]; | |
1907 | if (XVECTOR (pair)->size != 2) | |
4d30ce50 KS |
1908 | signal_error ( |
1909 | "Elements of the vector must be vectors of exactly two elements", | |
1910 | pair); | |
1b65481e | 1911 | |
ede4db72 | 1912 | (*(Atom **) data_ret) [i * 2] |
5c3a351a RS |
1913 | = symbol_to_x_atom (dpyinfo, display, |
1914 | XVECTOR (pair)->contents [0]); | |
ede4db72 | 1915 | (*(Atom **) data_ret) [(i * 2) + 1] |
5c3a351a RS |
1916 | = symbol_to_x_atom (dpyinfo, display, |
1917 | XVECTOR (pair)->contents [1]); | |
ede4db72 RS |
1918 | } |
1919 | else | |
4d30ce50 KS |
1920 | signal_error ("All elements of the vector must be of the same type", |
1921 | obj); | |
1b65481e | 1922 | |
ede4db72 RS |
1923 | } |
1924 | #endif | |
1925 | else | |
1926 | /* This vector is an INTEGER set, or something like it */ | |
1927 | { | |
e22cf39c | 1928 | int data_size = 2; |
ede4db72 RS |
1929 | *size_ret = XVECTOR (obj)->size; |
1930 | if (NILP (type)) type = QINTEGER; | |
1931 | *format_ret = 16; | |
1932 | for (i = 0; i < *size_ret; i++) | |
1933 | if (CONSP (XVECTOR (obj)->contents [i])) | |
1934 | *format_ret = 32; | |
7da64e5c | 1935 | else if (!INTEGERP (XVECTOR (obj)->contents [i])) |
4d30ce50 KS |
1936 | signal_error (/* Qselection_error */ |
1937 | "Elements of selection vector must be integers or conses of integers", | |
1938 | obj); | |
ede4db72 | 1939 | |
e22cf39c JD |
1940 | /* Use sizeof(long) even if it is more than 32 bits. See comment |
1941 | in x_get_window_property and x_fill_property_data. */ | |
6e816df5 | 1942 | |
e22cf39c JD |
1943 | if (*format_ret == 32) data_size = sizeof(long); |
1944 | *data_ret = (unsigned char *) xmalloc (*size_ret * data_size); | |
ede4db72 RS |
1945 | for (i = 0; i < *size_ret; i++) |
1946 | if (*format_ret == 32) | |
1947 | (*((unsigned long **) data_ret)) [i] | |
1948 | = cons_to_long (XVECTOR (obj)->contents [i]); | |
1949 | else | |
1950 | (*((unsigned short **) data_ret)) [i] | |
1951 | = (unsigned short) cons_to_long (XVECTOR (obj)->contents [i]); | |
1952 | } | |
1953 | } | |
1954 | else | |
4d30ce50 | 1955 | signal_error (/* Qselection_error */ "Unrecognized selection data", obj); |
ede4db72 | 1956 | |
5c3a351a | 1957 | *type_ret = symbol_to_x_atom (dpyinfo, display, type); |
ede4db72 RS |
1958 | } |
1959 | ||
1960 | static Lisp_Object | |
971de7fb | 1961 | clean_local_selection_data (Lisp_Object obj) |
ede4db72 RS |
1962 | { |
1963 | if (CONSP (obj) | |
8e713be6 KR |
1964 | && INTEGERP (XCAR (obj)) |
1965 | && CONSP (XCDR (obj)) | |
1966 | && INTEGERP (XCAR (XCDR (obj))) | |
1967 | && NILP (XCDR (XCDR (obj)))) | |
1968 | obj = Fcons (XCAR (obj), XCDR (obj)); | |
ede4db72 RS |
1969 | |
1970 | if (CONSP (obj) | |
8e713be6 KR |
1971 | && INTEGERP (XCAR (obj)) |
1972 | && INTEGERP (XCDR (obj))) | |
ede4db72 | 1973 | { |
8e713be6 KR |
1974 | if (XINT (XCAR (obj)) == 0) |
1975 | return XCDR (obj); | |
1976 | if (XINT (XCAR (obj)) == -1) | |
1977 | return make_number (- XINT (XCDR (obj))); | |
ede4db72 RS |
1978 | } |
1979 | if (VECTORP (obj)) | |
1980 | { | |
1981 | int i; | |
1982 | int size = XVECTOR (obj)->size; | |
1983 | Lisp_Object copy; | |
1984 | if (size == 1) | |
1985 | return clean_local_selection_data (XVECTOR (obj)->contents [0]); | |
e607a484 | 1986 | copy = Fmake_vector (make_number (size), Qnil); |
ede4db72 RS |
1987 | for (i = 0; i < size; i++) |
1988 | XVECTOR (copy)->contents [i] | |
1989 | = clean_local_selection_data (XVECTOR (obj)->contents [i]); | |
1990 | return copy; | |
1991 | } | |
1992 | return obj; | |
1993 | } | |
1994 | \f | |
1995 | /* Called from XTread_socket to handle SelectionNotify events. | |
606140dd KH |
1996 | If it's the selection we are waiting for, stop waiting |
1997 | by setting the car of reading_selection_reply to non-nil. | |
1998 | We store t there if the reply is successful, lambda if not. */ | |
ede4db72 RS |
1999 | |
2000 | void | |
971de7fb | 2001 | x_handle_selection_notify (XSelectionEvent *event) |
ede4db72 | 2002 | { |
5d0ba25b | 2003 | if (event->requestor != reading_selection_window) |
ede4db72 RS |
2004 | return; |
2005 | if (event->selection != reading_which_selection) | |
2006 | return; | |
2007 | ||
d9c0d4a3 | 2008 | TRACE0 ("Received SelectionNotify"); |
f3fbd155 KR |
2009 | XSETCAR (reading_selection_reply, |
2010 | (event->property != 0 ? Qt : Qlambda)); | |
ede4db72 RS |
2011 | } |
2012 | ||
2013 | \f | |
a0d76c27 | 2014 | DEFUN ("x-own-selection-internal", Fx_own_selection_internal, |
8c1a1077 PJ |
2015 | Sx_own_selection_internal, 2, 2, 0, |
2016 | doc: /* Assert an X selection of the given TYPE with the given VALUE. | |
2017 | TYPE is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. | |
2018 | \(Those are literal upper-case symbol names, since that's what X expects.) | |
2019 | VALUE is typically a string, or a cons of two markers, but may be | |
2020 | anything that the functions on `selection-converter-alist' know about. */) | |
5842a27b | 2021 | (Lisp_Object selection_name, Lisp_Object selection_value) |
ede4db72 | 2022 | { |
703e0710 | 2023 | check_x (); |
b7826503 | 2024 | CHECK_SYMBOL (selection_name); |
253b2298 | 2025 | if (NILP (selection_value)) error ("SELECTION-VALUE may not be nil"); |
ede4db72 RS |
2026 | x_own_selection (selection_name, selection_value); |
2027 | return selection_value; | |
2028 | } | |
2029 | ||
2030 | ||
2031 | /* Request the selection value from the owner. If we are the owner, | |
2032 | simply return our selection value. If we are not the owner, this | |
2033 | will block until all of the data has arrived. */ | |
2034 | ||
a0d76c27 | 2035 | DEFUN ("x-get-selection-internal", Fx_get_selection_internal, |
3a42401d | 2036 | Sx_get_selection_internal, 2, 3, 0, |
8c1a1077 PJ |
2037 | doc: /* Return text selected from some X window. |
2038 | SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. | |
2039 | \(Those are literal upper-case symbol names, since that's what X expects.) | |
3a42401d JD |
2040 | TYPE is the type of data desired, typically `STRING'. |
2041 | TIME_STAMP is the time to use in the XConvertSelection call for foreign | |
2042 | selections. If omitted, defaults to the time for the last event. */) | |
5842a27b | 2043 | (Lisp_Object selection_symbol, Lisp_Object target_type, Lisp_Object time_stamp) |
ede4db72 RS |
2044 | { |
2045 | Lisp_Object val = Qnil; | |
2046 | struct gcpro gcpro1, gcpro2; | |
2047 | GCPRO2 (target_type, val); /* we store newly consed data into these */ | |
703e0710 | 2048 | check_x (); |
b7826503 | 2049 | CHECK_SYMBOL (selection_symbol); |
ede4db72 RS |
2050 | |
2051 | #if 0 /* #### MULTIPLE doesn't work yet */ | |
2052 | if (CONSP (target_type) | |
8e713be6 | 2053 | && XCAR (target_type) == QMULTIPLE) |
ede4db72 | 2054 | { |
b7826503 | 2055 | CHECK_VECTOR (XCDR (target_type)); |
ede4db72 RS |
2056 | /* So we don't destructively modify this... */ |
2057 | target_type = copy_multiple_data (target_type); | |
2058 | } | |
2059 | else | |
2060 | #endif | |
b7826503 | 2061 | CHECK_SYMBOL (target_type); |
ede4db72 | 2062 | |
5109c8dd | 2063 | val = x_get_local_selection (selection_symbol, target_type, 1); |
ede4db72 RS |
2064 | |
2065 | if (NILP (val)) | |
2066 | { | |
3a42401d | 2067 | val = x_get_foreign_selection (selection_symbol, target_type, time_stamp); |
ede4db72 RS |
2068 | goto DONE; |
2069 | } | |
2070 | ||
2071 | if (CONSP (val) | |
8e713be6 | 2072 | && SYMBOLP (XCAR (val))) |
ede4db72 | 2073 | { |
8e713be6 KR |
2074 | val = XCDR (val); |
2075 | if (CONSP (val) && NILP (XCDR (val))) | |
2076 | val = XCAR (val); | |
ede4db72 RS |
2077 | } |
2078 | val = clean_local_selection_data (val); | |
2079 | DONE: | |
2080 | UNGCPRO; | |
2081 | return val; | |
2082 | } | |
2083 | ||
a0d76c27 | 2084 | DEFUN ("x-disown-selection-internal", Fx_disown_selection_internal, |
8c1a1077 PJ |
2085 | Sx_disown_selection_internal, 1, 2, 0, |
2086 | doc: /* If we own the selection SELECTION, disown it. | |
2087 | Disowning it means there is no such selection. */) | |
5842a27b | 2088 | (Lisp_Object selection, Lisp_Object time) |
ede4db72 | 2089 | { |
ede4db72 RS |
2090 | Time timestamp; |
2091 | Atom selection_atom; | |
31df61d6 AS |
2092 | union { |
2093 | struct selection_input_event sie; | |
2094 | struct input_event ie; | |
2095 | } event; | |
3834c318 | 2096 | Display *display; |
5c3a351a | 2097 | struct x_display_info *dpyinfo; |
378c33ca | 2098 | struct frame *sf = SELECTED_FRAME (); |
ede4db72 | 2099 | |
703e0710 | 2100 | check_x (); |
428a555e KL |
2101 | if (! FRAME_X_P (sf)) |
2102 | return Qnil; | |
2103 | ||
378c33ca GM |
2104 | display = FRAME_X_DISPLAY (sf); |
2105 | dpyinfo = FRAME_X_DISPLAY_INFO (sf); | |
b7826503 | 2106 | CHECK_SYMBOL (selection); |
ede4db72 | 2107 | if (NILP (time)) |
7da64e5c | 2108 | timestamp = last_event_timestamp; |
ede4db72 RS |
2109 | else |
2110 | timestamp = cons_to_long (time); | |
2111 | ||
2112 | if (NILP (assq_no_quit (selection, Vselection_alist))) | |
2113 | return Qnil; /* Don't disown the selection when we're not the owner. */ | |
2114 | ||
5c3a351a | 2115 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection); |
ede4db72 RS |
2116 | |
2117 | BLOCK_INPUT; | |
2118 | XSetSelectionOwner (display, selection_atom, None, timestamp); | |
2119 | UNBLOCK_INPUT; | |
2120 | ||
eb8c3be9 | 2121 | /* It doesn't seem to be guaranteed that a SelectionClear event will be |
ede4db72 RS |
2122 | generated for a window which owns the selection when that window sets |
2123 | the selection owner to None. The NCD server does, the MIT Sun4 server | |
2124 | doesn't. So we synthesize one; this means we might get two, but | |
2125 | that's ok, because the second one won't have any effect. */ | |
31df61d6 AS |
2126 | SELECTION_EVENT_DISPLAY (&event.sie) = display; |
2127 | SELECTION_EVENT_SELECTION (&event.sie) = selection_atom; | |
2128 | SELECTION_EVENT_TIME (&event.sie) = timestamp; | |
2129 | x_handle_selection_clear (&event.ie); | |
ede4db72 RS |
2130 | |
2131 | return Qt; | |
2132 | } | |
2133 | ||
a87ed99c RS |
2134 | /* Get rid of all the selections in buffer BUFFER. |
2135 | This is used when we kill a buffer. */ | |
2136 | ||
2137 | void | |
971de7fb | 2138 | x_disown_buffer_selections (Lisp_Object buffer) |
a87ed99c RS |
2139 | { |
2140 | Lisp_Object tail; | |
2141 | struct buffer *buf = XBUFFER (buffer); | |
2142 | ||
8e713be6 | 2143 | for (tail = Vselection_alist; CONSP (tail); tail = XCDR (tail)) |
a87ed99c RS |
2144 | { |
2145 | Lisp_Object elt, value; | |
8e713be6 KR |
2146 | elt = XCAR (tail); |
2147 | value = XCDR (elt); | |
2148 | if (CONSP (value) && MARKERP (XCAR (value)) | |
2149 | && XMARKER (XCAR (value))->buffer == buf) | |
2150 | Fx_disown_selection_internal (XCAR (elt), Qnil); | |
a87ed99c RS |
2151 | } |
2152 | } | |
ede4db72 RS |
2153 | |
2154 | DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p, | |
8c1a1077 PJ |
2155 | 0, 1, 0, |
2156 | doc: /* Whether the current Emacs process owns the given X Selection. | |
2157 | The arg should be the name of the selection in question, typically one of | |
2158 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'. | |
2159 | \(Those are literal upper-case symbol names, since that's what X expects.) | |
2160 | For convenience, the symbol nil is the same as `PRIMARY', | |
2161 | and t is the same as `SECONDARY'. */) | |
5842a27b | 2162 | (Lisp_Object selection) |
ede4db72 | 2163 | { |
703e0710 | 2164 | check_x (); |
b7826503 | 2165 | CHECK_SYMBOL (selection); |
ede4db72 RS |
2166 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
2167 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
1b65481e | 2168 | |
ede4db72 RS |
2169 | if (NILP (Fassq (selection, Vselection_alist))) |
2170 | return Qnil; | |
2171 | return Qt; | |
2172 | } | |
2173 | ||
2174 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
8c1a1077 PJ |
2175 | 0, 1, 0, |
2176 | doc: /* Whether there is an owner for the given X Selection. | |
2177 | The arg should be the name of the selection in question, typically one of | |
2178 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'. | |
2179 | \(Those are literal upper-case symbol names, since that's what X expects.) | |
2180 | For convenience, the symbol nil is the same as `PRIMARY', | |
2181 | and t is the same as `SECONDARY'. */) | |
5842a27b | 2182 | (Lisp_Object selection) |
ede4db72 RS |
2183 | { |
2184 | Window owner; | |
356ba514 | 2185 | Atom atom; |
3834c318 | 2186 | Display *dpy; |
378c33ca | 2187 | struct frame *sf = SELECTED_FRAME (); |
3834c318 | 2188 | |
b8c70430 | 2189 | /* It should be safe to call this before we have an X frame. */ |
378c33ca | 2190 | if (! FRAME_X_P (sf)) |
b8c70430 RS |
2191 | return Qnil; |
2192 | ||
378c33ca | 2193 | dpy = FRAME_X_DISPLAY (sf); |
b7826503 | 2194 | CHECK_SYMBOL (selection); |
ede4db72 RS |
2195 | if (!NILP (Fx_selection_owner_p (selection))) |
2196 | return Qt; | |
356ba514 RS |
2197 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
2198 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
378c33ca | 2199 | atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (sf), dpy, selection); |
356ba514 RS |
2200 | if (atom == 0) |
2201 | return Qnil; | |
ede4db72 | 2202 | BLOCK_INPUT; |
356ba514 | 2203 | owner = XGetSelectionOwner (dpy, atom); |
ede4db72 RS |
2204 | UNBLOCK_INPUT; |
2205 | return (owner ? Qt : Qnil); | |
2206 | } | |
2207 | ||
2208 | \f | |
1fb3821b JD |
2209 | /*********************************************************************** |
2210 | Drag and drop support | |
2211 | ***********************************************************************/ | |
2212 | /* Check that lisp values are of correct type for x_fill_property_data. | |
2213 | That is, number, string or a cons with two numbers (low and high 16 | |
2214 | bit parts of a 32 bit number). */ | |
2215 | ||
2216 | int | |
971de7fb | 2217 | x_check_property_data (Lisp_Object data) |
1fb3821b JD |
2218 | { |
2219 | Lisp_Object iter; | |
2220 | int size = 0; | |
2221 | ||
2222 | for (iter = data; CONSP (iter) && size != -1; iter = XCDR (iter), ++size) | |
2223 | { | |
2224 | Lisp_Object o = XCAR (iter); | |
2225 | ||
2226 | if (! NUMBERP (o) && ! STRINGP (o) && ! CONSP (o)) | |
2227 | size = -1; | |
2228 | else if (CONSP (o) && | |
2229 | (! NUMBERP (XCAR (o)) || ! NUMBERP (XCDR (o)))) | |
2230 | size = -1; | |
2231 | } | |
2232 | ||
2233 | return size; | |
2234 | } | |
2235 | ||
2236 | /* Convert lisp values to a C array. Values may be a number, a string | |
2237 | which is taken as an X atom name and converted to the atom value, or | |
2238 | a cons containing the two 16 bit parts of a 32 bit number. | |
2239 | ||
2240 | DPY is the display use to look up X atoms. | |
2241 | DATA is a Lisp list of values to be converted. | |
2242 | RET is the C array that contains the converted values. It is assumed | |
ff59904a | 2243 | it is big enough to hold all values. |
e22cf39c JD |
2244 | FORMAT is 8, 16 or 32 and denotes char/short/long for each C value to |
2245 | be stored in RET. Note that long is used for 32 even if long is more | |
2246 | than 32 bits (see man pages for XChangeProperty, XGetWindowProperty and | |
2247 | XClientMessageEvent). */ | |
1fb3821b JD |
2248 | |
2249 | void | |
971de7fb | 2250 | x_fill_property_data (Display *dpy, Lisp_Object data, void *ret, int format) |
1fb3821b | 2251 | { |
e22cf39c JD |
2252 | long val; |
2253 | long *d32 = (long *) ret; | |
2254 | short *d16 = (short *) ret; | |
2255 | char *d08 = (char *) ret; | |
1fb3821b JD |
2256 | Lisp_Object iter; |
2257 | ||
2258 | for (iter = data; CONSP (iter); iter = XCDR (iter)) | |
2259 | { | |
2260 | Lisp_Object o = XCAR (iter); | |
2261 | ||
2262 | if (INTEGERP (o)) | |
e22cf39c | 2263 | val = (long) XFASTINT (o); |
1fb3821b | 2264 | else if (FLOATP (o)) |
e22cf39c | 2265 | val = (long) XFLOAT_DATA (o); |
1fb3821b | 2266 | else if (CONSP (o)) |
e22cf39c | 2267 | val = (long) cons_to_long (o); |
1fb3821b JD |
2268 | else if (STRINGP (o)) |
2269 | { | |
2270 | BLOCK_INPUT; | |
51b59d79 | 2271 | val = (long) XInternAtom (dpy, SSDATA (o), False); |
1fb3821b JD |
2272 | UNBLOCK_INPUT; |
2273 | } | |
2274 | else | |
2275 | error ("Wrong type, must be string, number or cons"); | |
2276 | ||
2277 | if (format == 8) | |
e22cf39c | 2278 | *d08++ = (char) val; |
1fb3821b | 2279 | else if (format == 16) |
e22cf39c | 2280 | *d16++ = (short) val; |
1fb3821b JD |
2281 | else |
2282 | *d32++ = val; | |
2283 | } | |
2284 | } | |
2285 | ||
2286 | /* Convert an array of C values to a Lisp list. | |
2287 | F is the frame to be used to look up X atoms if the TYPE is XA_ATOM. | |
2288 | DATA is a C array of values to be converted. | |
2289 | TYPE is the type of the data. Only XA_ATOM is special, it converts | |
2290 | each number in DATA to its corresponfing X atom as a symbol. | |
2291 | FORMAT is 8, 16 or 32 and gives the size in bits for each C value to | |
2292 | be stored in RET. | |
2293 | SIZE is the number of elements in DATA. | |
2294 | ||
b8d6f4af JD |
2295 | Important: When format is 32, data should contain an array of int, |
2296 | not an array of long as the X library returns. This makes a difference | |
2297 | when sizeof(long) != sizeof(int). | |
2298 | ||
1fb3821b JD |
2299 | Also see comment for selection_data_to_lisp_data above. */ |
2300 | ||
2301 | Lisp_Object | |
eec47d6b DN |
2302 | x_property_data_to_lisp (struct frame *f, const unsigned char *data, |
2303 | Atom type, int format, long unsigned int size) | |
1fb3821b JD |
2304 | { |
2305 | return selection_data_to_lisp_data (FRAME_X_DISPLAY (f), | |
2306 | data, size*format/8, type, format); | |
2307 | } | |
2308 | ||
31f16913 | 2309 | /* Get the mouse position in frame relative coordinates. */ |
1fb3821b JD |
2310 | |
2311 | static void | |
971de7fb | 2312 | mouse_position_for_drop (FRAME_PTR f, int *x, int *y) |
1fb3821b JD |
2313 | { |
2314 | Window root, dummy_window; | |
2315 | int dummy; | |
2316 | ||
2317 | BLOCK_INPUT; | |
2318 | ||
2319 | XQueryPointer (FRAME_X_DISPLAY (f), | |
2320 | DefaultRootWindow (FRAME_X_DISPLAY (f)), | |
2321 | ||
2322 | /* The root window which contains the pointer. */ | |
2323 | &root, | |
2324 | ||
2325 | /* Window pointer is on, not used */ | |
2326 | &dummy_window, | |
2327 | ||
2328 | /* The position on that root window. */ | |
2329 | x, y, | |
2330 | ||
2331 | /* x/y in dummy_window coordinates, not used. */ | |
2332 | &dummy, &dummy, | |
2333 | ||
2334 | /* Modifier keys and pointer buttons, about which | |
2335 | we don't care. */ | |
2336 | (unsigned int *) &dummy); | |
2337 | ||
2338 | ||
2339 | /* Absolute to relative. */ | |
2340 | *x -= f->left_pos + FRAME_OUTER_TO_INNER_DIFF_X (f); | |
2341 | *y -= f->top_pos + FRAME_OUTER_TO_INNER_DIFF_Y (f); | |
2342 | ||
2343 | UNBLOCK_INPUT; | |
2344 | } | |
2345 | ||
2346 | DEFUN ("x-get-atom-name", Fx_get_atom_name, | |
2347 | Sx_get_atom_name, 1, 2, 0, | |
2348 | doc: /* Return the X atom name for VALUE as a string. | |
2349 | VALUE may be a number or a cons where the car is the upper 16 bits and | |
2350 | the cdr is the lower 16 bits of a 32 bit value. | |
2351 | Use the display for FRAME or the current frame if FRAME is not given or nil. | |
2352 | ||
2353 | If the value is 0 or the atom is not known, return the empty string. */) | |
5842a27b | 2354 | (Lisp_Object value, Lisp_Object frame) |
1fb3821b JD |
2355 | { |
2356 | struct frame *f = check_x_frame (frame); | |
2357 | char *name = 0; | |
42ca4633 | 2358 | char empty[] = ""; |
1fb3821b | 2359 | Lisp_Object ret = Qnil; |
1fb3821b JD |
2360 | Display *dpy = FRAME_X_DISPLAY (f); |
2361 | Atom atom; | |
c525d842 | 2362 | int had_errors; |
1fb3821b JD |
2363 | |
2364 | if (INTEGERP (value)) | |
2365 | atom = (Atom) XUINT (value); | |
2366 | else if (FLOATP (value)) | |
ff59904a | 2367 | atom = (Atom) XFLOAT_DATA (value); |
1fb3821b JD |
2368 | else if (CONSP (value)) |
2369 | atom = (Atom) cons_to_long (value); | |
2370 | else | |
2371 | error ("Wrong type, value must be number or cons"); | |
2372 | ||
2373 | BLOCK_INPUT; | |
9ba8e10d | 2374 | x_catch_errors (dpy); |
42ca4633 | 2375 | name = atom ? XGetAtomName (dpy, atom) : empty; |
c525d842 CY |
2376 | had_errors = x_had_errors_p (dpy); |
2377 | x_uncatch_errors (); | |
1fb3821b | 2378 | |
c525d842 | 2379 | if (!had_errors) |
1fb3821b JD |
2380 | ret = make_string (name, strlen (name)); |
2381 | ||
1fb3821b | 2382 | if (atom && name) XFree (name); |
8b3ad112 | 2383 | if (NILP (ret)) ret = empty_unibyte_string; |
1fb3821b JD |
2384 | |
2385 | UNBLOCK_INPUT; | |
2386 | ||
2387 | return ret; | |
2388 | } | |
2389 | ||
9fc68699 JD |
2390 | DEFUN ("x-register-dnd-atom", Fx_register_dnd_atom, |
2391 | Sx_register_dnd_atom, 1, 2, 0, | |
2392 | doc: /* Request that dnd events are made for ClientMessages with ATOM. | |
2393 | ATOM can be a symbol or a string. The ATOM is interned on the display that | |
2394 | FRAME is on. If FRAME is nil, the selected frame is used. */) | |
5842a27b | 2395 | (Lisp_Object atom, Lisp_Object frame) |
9fc68699 JD |
2396 | { |
2397 | Atom x_atom; | |
2398 | struct frame *f = check_x_frame (frame); | |
2399 | size_t i; | |
2400 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
2401 | ||
2402 | ||
2403 | if (SYMBOLP (atom)) | |
2404 | x_atom = symbol_to_x_atom (dpyinfo, FRAME_X_DISPLAY (f), atom); | |
2405 | else if (STRINGP (atom)) | |
2406 | { | |
2407 | BLOCK_INPUT; | |
51b59d79 | 2408 | x_atom = XInternAtom (FRAME_X_DISPLAY (f), SSDATA (atom), False); |
9fc68699 JD |
2409 | UNBLOCK_INPUT; |
2410 | } | |
2411 | else | |
2412 | error ("ATOM must be a symbol or a string"); | |
2413 | ||
db9cd97a | 2414 | for (i = 0; i < dpyinfo->x_dnd_atoms_length; ++i) |
9fc68699 JD |
2415 | if (dpyinfo->x_dnd_atoms[i] == x_atom) |
2416 | return Qnil; | |
2417 | ||
db9cd97a | 2418 | if (dpyinfo->x_dnd_atoms_length == dpyinfo->x_dnd_atoms_size) |
9fc68699 JD |
2419 | { |
2420 | dpyinfo->x_dnd_atoms_size *= 2; | |
2421 | dpyinfo->x_dnd_atoms = xrealloc (dpyinfo->x_dnd_atoms, | |
2422 | sizeof (*dpyinfo->x_dnd_atoms) | |
2423 | * dpyinfo->x_dnd_atoms_size); | |
2424 | } | |
2425 | ||
2426 | dpyinfo->x_dnd_atoms[dpyinfo->x_dnd_atoms_length++] = x_atom; | |
2427 | return Qnil; | |
2428 | } | |
2429 | ||
2430 | /* Convert an XClientMessageEvent to a Lisp event of type DRAG_N_DROP_EVENT. */ | |
1fb3821b JD |
2431 | |
2432 | int | |
971de7fb | 2433 | x_handle_dnd_message (struct frame *f, XClientMessageEvent *event, struct x_display_info *dpyinfo, struct input_event *bufp) |
1fb3821b JD |
2434 | { |
2435 | Lisp_Object vec; | |
2436 | Lisp_Object frame; | |
e22cf39c JD |
2437 | /* format 32 => size 5, format 16 => size 10, format 8 => size 20 */ |
2438 | unsigned long size = 160/event->format; | |
1fb3821b | 2439 | int x, y; |
31f16913 JD |
2440 | unsigned char *data = (unsigned char *) event->data.b; |
2441 | int idata[5]; | |
9fc68699 JD |
2442 | size_t i; |
2443 | ||
db9cd97a | 2444 | for (i = 0; i < dpyinfo->x_dnd_atoms_length; ++i) |
9fc68699 JD |
2445 | if (dpyinfo->x_dnd_atoms[i] == event->message_type) break; |
2446 | ||
2447 | if (i == dpyinfo->x_dnd_atoms_length) return 0; | |
1fb3821b JD |
2448 | |
2449 | XSETFRAME (frame, f); | |
2450 | ||
31f16913 JD |
2451 | /* On a 64 bit machine, the event->data.l array members are 64 bits (long), |
2452 | but the x_property_data_to_lisp (or rather selection_data_to_lisp_data) | |
2453 | function expects them to be of size int (i.e. 32). So to be able to | |
2454 | use that function, put the data in the form it expects if format is 32. */ | |
2455 | ||
2456 | if (event->format == 32 && event->format < BITS_PER_LONG) | |
2457 | { | |
2458 | int i; | |
2459 | for (i = 0; i < 5; ++i) /* There are only 5 longs in a ClientMessage. */ | |
2460 | idata[i] = (int) event->data.l[i]; | |
2461 | data = (unsigned char *) idata; | |
2462 | } | |
2463 | ||
d2f14999 | 2464 | vec = Fmake_vector (make_number (4), Qnil); |
3ae565b3 SM |
2465 | ASET (vec, 0, SYMBOL_NAME (x_atom_to_symbol (FRAME_X_DISPLAY (f), |
2466 | event->message_type))); | |
2467 | ASET (vec, 1, frame); | |
2468 | ASET (vec, 2, make_number (event->format)); | |
2469 | ASET (vec, 3, x_property_data_to_lisp (f, | |
2470 | data, | |
2471 | event->message_type, | |
2472 | event->format, | |
2473 | size)); | |
1fb3821b JD |
2474 | |
2475 | mouse_position_for_drop (f, &x, &y); | |
2476 | bufp->kind = DRAG_N_DROP_EVENT; | |
862c94ca | 2477 | bufp->frame_or_window = frame; |
1fb3821b JD |
2478 | bufp->timestamp = CurrentTime; |
2479 | bufp->x = make_number (x); | |
2480 | bufp->y = make_number (y); | |
862c94ca | 2481 | bufp->arg = vec; |
1fb3821b JD |
2482 | bufp->modifiers = 0; |
2483 | ||
2484 | return 1; | |
2485 | } | |
2486 | ||
2487 | DEFUN ("x-send-client-message", Fx_send_client_event, | |
2488 | Sx_send_client_message, 6, 6, 0, | |
2489 | doc: /* Send a client message of MESSAGE-TYPE to window DEST on DISPLAY. | |
2490 | ||
2491 | For DISPLAY, specify either a frame or a display name (a string). | |
2492 | If DISPLAY is nil, that stands for the selected frame's display. | |
2493 | DEST may be a number, in which case it is a Window id. The value 0 may | |
2494 | be used to send to the root window of the DISPLAY. | |
2495 | If DEST 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. That | |
2497 | number is then used as a window id. | |
2498 | If DEST is a frame the event is sent to the outer window of that frame. | |
69785ad0 | 2499 | A value of nil means the currently selected frame. |
1fb3821b JD |
2500 | If DEST is the string "PointerWindow" the event is sent to the window that |
2501 | contains the pointer. If DEST is the string "InputFocus" the event is | |
2502 | sent to the window that has the input focus. | |
2503 | FROM is the frame sending the event. Use nil for currently selected frame. | |
2504 | MESSAGE-TYPE is the name of an Atom as a string. | |
2505 | FORMAT must be one of 8, 16 or 32 and determines the size of the values in | |
2506 | bits. VALUES is a list of numbers, cons and/or strings containing the values | |
2507 | to send. If a value is a string, it is converted to an Atom and the value of | |
2508 | the Atom is sent. If a value is a cons, it is converted to a 32 bit number | |
2509 | with the high 16 bits from the car and the lower 16 bit from the cdr. | |
2510 | If more values than fits into the event is given, the excessive values | |
2511 | are ignored. */) | |
5842a27b | 2512 | (Lisp_Object display, Lisp_Object dest, Lisp_Object from, Lisp_Object message_type, Lisp_Object format, Lisp_Object values) |
2d9074ba JD |
2513 | { |
2514 | struct x_display_info *dpyinfo = check_x_display_info (display); | |
2515 | ||
933e29ff | 2516 | CHECK_STRING (message_type); |
2d9074ba | 2517 | x_send_client_event(display, dest, from, |
933e29ff | 2518 | XInternAtom (dpyinfo->display, |
42a5b22f | 2519 | SSDATA (message_type), |
933e29ff | 2520 | False), |
2d9074ba JD |
2521 | format, values); |
2522 | ||
2523 | return Qnil; | |
2524 | } | |
2525 | ||
2526 | void | |
2527 | x_send_client_event (Lisp_Object display, Lisp_Object dest, Lisp_Object from, Atom message_type, Lisp_Object format, Lisp_Object values) | |
1fb3821b JD |
2528 | { |
2529 | struct x_display_info *dpyinfo = check_x_display_info (display); | |
2530 | Window wdest; | |
2531 | XEvent event; | |
1fb3821b | 2532 | struct frame *f = check_x_frame (from); |
1fb3821b JD |
2533 | int to_root; |
2534 | ||
1fb3821b JD |
2535 | CHECK_NUMBER (format); |
2536 | CHECK_CONS (values); | |
2537 | ||
2538 | if (x_check_property_data (values) == -1) | |
2539 | error ("Bad data in VALUES, must be number, cons or string"); | |
2540 | ||
2541 | event.xclient.type = ClientMessage; | |
2542 | event.xclient.format = XFASTINT (format); | |
2543 | ||
2544 | if (event.xclient.format != 8 && event.xclient.format != 16 | |
2545 | && event.xclient.format != 32) | |
2546 | error ("FORMAT must be one of 8, 16 or 32"); | |
a0ecb2ac | 2547 | |
1fb3821b JD |
2548 | if (FRAMEP (dest) || NILP (dest)) |
2549 | { | |
2550 | struct frame *fdest = check_x_frame (dest); | |
2551 | wdest = FRAME_OUTER_WINDOW (fdest); | |
2552 | } | |
2553 | else if (STRINGP (dest)) | |
2554 | { | |
42a5b22f | 2555 | if (strcmp (SSDATA (dest), "PointerWindow") == 0) |
1fb3821b | 2556 | wdest = PointerWindow; |
42a5b22f | 2557 | else if (strcmp (SSDATA (dest), "InputFocus") == 0) |
1fb3821b JD |
2558 | wdest = InputFocus; |
2559 | else | |
2560 | error ("DEST as a string must be one of PointerWindow or InputFocus"); | |
2561 | } | |
2562 | else if (INTEGERP (dest)) | |
2563 | wdest = (Window) XFASTINT (dest); | |
2564 | else if (FLOATP (dest)) | |
ff59904a | 2565 | wdest = (Window) XFLOAT_DATA (dest); |
1fb3821b JD |
2566 | else if (CONSP (dest)) |
2567 | { | |
2568 | if (! NUMBERP (XCAR (dest)) || ! NUMBERP (XCDR (dest))) | |
2569 | error ("Both car and cdr for DEST must be numbers"); | |
2570 | else | |
2571 | wdest = (Window) cons_to_long (dest); | |
2572 | } | |
2573 | else | |
2574 | error ("DEST must be a frame, nil, string, number or cons"); | |
2575 | ||
2576 | if (wdest == 0) wdest = dpyinfo->root_window; | |
2577 | to_root = wdest == dpyinfo->root_window; | |
2578 | ||
1fb3821b JD |
2579 | BLOCK_INPUT; |
2580 | ||
2d9074ba | 2581 | event.xclient.message_type = message_type; |
1fb3821b JD |
2582 | event.xclient.display = dpyinfo->display; |
2583 | ||
2584 | /* Some clients (metacity for example) expects sending window to be here | |
2585 | when sending to the root window. */ | |
2586 | event.xclient.window = to_root ? FRAME_OUTER_WINDOW (f) : wdest; | |
2587 | ||
6e816df5 | 2588 | |
1fb3821b JD |
2589 | memset (event.xclient.data.b, 0, sizeof (event.xclient.data.b)); |
2590 | x_fill_property_data (dpyinfo->display, values, event.xclient.data.b, | |
2591 | event.xclient.format); | |
2592 | ||
2593 | /* If event mask is 0 the event is sent to the client that created | |
2594 | the destination window. But if we are sending to the root window, | |
2595 | there is no such client. Then we set the event mask to 0xffff. The | |
2596 | event then goes to clients selecting for events on the root window. */ | |
9ba8e10d | 2597 | x_catch_errors (dpyinfo->display); |
1fb3821b JD |
2598 | { |
2599 | int propagate = to_root ? False : True; | |
2600 | unsigned mask = to_root ? 0xffff : 0; | |
2601 | XSendEvent (dpyinfo->display, wdest, propagate, mask, &event); | |
2602 | XFlush (dpyinfo->display); | |
2603 | } | |
4545fa20 | 2604 | x_uncatch_errors (); |
1fb3821b | 2605 | UNBLOCK_INPUT; |
1fb3821b JD |
2606 | } |
2607 | ||
2608 | \f | |
ede4db72 | 2609 | void |
971de7fb | 2610 | syms_of_xselect (void) |
ede4db72 | 2611 | { |
ede4db72 RS |
2612 | defsubr (&Sx_get_selection_internal); |
2613 | defsubr (&Sx_own_selection_internal); | |
2614 | defsubr (&Sx_disown_selection_internal); | |
2615 | defsubr (&Sx_selection_owner_p); | |
2616 | defsubr (&Sx_selection_exists_p); | |
2617 | ||
1fb3821b JD |
2618 | defsubr (&Sx_get_atom_name); |
2619 | defsubr (&Sx_send_client_message); | |
9fc68699 | 2620 | defsubr (&Sx_register_dnd_atom); |
1fb3821b | 2621 | |
ede4db72 RS |
2622 | reading_selection_reply = Fcons (Qnil, Qnil); |
2623 | staticpro (&reading_selection_reply); | |
2624 | reading_selection_window = 0; | |
2625 | reading_which_selection = 0; | |
2626 | ||
2627 | property_change_wait_list = 0; | |
2f65feb6 | 2628 | prop_location_identifier = 0; |
ede4db72 RS |
2629 | property_change_reply = Fcons (Qnil, Qnil); |
2630 | staticpro (&property_change_reply); | |
2631 | ||
2632 | Vselection_alist = Qnil; | |
2633 | staticpro (&Vselection_alist); | |
2634 | ||
29208e82 | 2635 | DEFVAR_LISP ("selection-converter-alist", Vselection_converter_alist, |
8c1a1077 PJ |
2636 | doc: /* An alist associating X Windows selection-types with functions. |
2637 | These functions are called to convert the selection, with three args: | |
2638 | the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD'); | |
2639 | a desired type to which the selection should be converted; | |
2640 | and the local selection value (whatever was given to `x-own-selection'). | |
2641 | ||
2642 | The function should return the value to send to the X server | |
2643 | \(typically a string). A return value of nil | |
2644 | means that the conversion could not be done. | |
2645 | A return value which is the symbol `NULL' | |
2646 | means that a side-effect was executed, | |
2647 | and there is no meaningful selection value. */); | |
ede4db72 RS |
2648 | Vselection_converter_alist = Qnil; |
2649 | ||
29208e82 | 2650 | DEFVAR_LISP ("x-lost-selection-functions", Vx_lost_selection_functions, |
8c1a1077 PJ |
2651 | doc: /* A list of functions to be called when Emacs loses an X selection. |
2652 | \(This happens when some other X client makes its own selection | |
2653 | or when a Lisp program explicitly clears the selection.) | |
2654 | The functions are called with one argument, the selection type | |
2655 | \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'). */); | |
c917a8de | 2656 | Vx_lost_selection_functions = Qnil; |
ede4db72 | 2657 | |
29208e82 | 2658 | DEFVAR_LISP ("x-sent-selection-functions", Vx_sent_selection_functions, |
8c1a1077 PJ |
2659 | doc: /* A list of functions to be called when Emacs answers a selection request. |
2660 | The functions are called with four arguments: | |
2661 | - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD'); | |
2662 | - the selection-type which Emacs was asked to convert the | |
2663 | selection into before sending (for example, `STRING' or `LENGTH'); | |
2664 | - a flag indicating success or failure for responding to the request. | |
2665 | We might have failed (and declined the request) for any number of reasons, | |
2666 | including being asked for a selection that we no longer own, or being asked | |
2667 | to convert into a type that we don't know about or that is inappropriate. | |
2668 | This hook doesn't let you change the behavior of Emacs's selection replies, | |
2669 | it merely informs you that they have happened. */); | |
c917a8de | 2670 | Vx_sent_selection_functions = Qnil; |
ede4db72 | 2671 | |
29208e82 | 2672 | DEFVAR_INT ("x-selection-timeout", x_selection_timeout, |
8c1a1077 PJ |
2673 | doc: /* Number of milliseconds to wait for a selection reply. |
2674 | If the selection owner doesn't reply in this time, we give up. | |
2675 | A value of 0 means wait as long as necessary. This is initialized from the | |
2676 | \"*selectionTimeout\" resource. */); | |
ede4db72 RS |
2677 | x_selection_timeout = 0; |
2678 | ||
9852377f | 2679 | /* QPRIMARY is defined in keyboard.c. */ |
d67b4f80 DN |
2680 | QSECONDARY = intern_c_string ("SECONDARY"); staticpro (&QSECONDARY); |
2681 | QSTRING = intern_c_string ("STRING"); staticpro (&QSTRING); | |
2682 | QINTEGER = intern_c_string ("INTEGER"); staticpro (&QINTEGER); | |
2683 | QCLIPBOARD = intern_c_string ("CLIPBOARD"); staticpro (&QCLIPBOARD); | |
2684 | QTIMESTAMP = intern_c_string ("TIMESTAMP"); staticpro (&QTIMESTAMP); | |
2685 | QTEXT = intern_c_string ("TEXT"); staticpro (&QTEXT); | |
2686 | QCOMPOUND_TEXT = intern_c_string ("COMPOUND_TEXT"); staticpro (&QCOMPOUND_TEXT); | |
2687 | QUTF8_STRING = intern_c_string ("UTF8_STRING"); staticpro (&QUTF8_STRING); | |
2688 | QDELETE = intern_c_string ("DELETE"); staticpro (&QDELETE); | |
2689 | QMULTIPLE = intern_c_string ("MULTIPLE"); staticpro (&QMULTIPLE); | |
2690 | QINCR = intern_c_string ("INCR"); staticpro (&QINCR); | |
2691 | QEMACS_TMP = intern_c_string ("_EMACS_TMP_"); staticpro (&QEMACS_TMP); | |
2692 | QTARGETS = intern_c_string ("TARGETS"); staticpro (&QTARGETS); | |
2693 | QATOM = intern_c_string ("ATOM"); staticpro (&QATOM); | |
2694 | QATOM_PAIR = intern_c_string ("ATOM_PAIR"); staticpro (&QATOM_PAIR); | |
2695 | QNULL = intern_c_string ("NULL"); staticpro (&QNULL); | |
2696 | Qcompound_text_with_extensions = intern_c_string ("compound-text-with-extensions"); | |
5a79ea57 | 2697 | staticpro (&Qcompound_text_with_extensions); |
ede4db72 | 2698 | |
d67b4f80 | 2699 | Qforeign_selection = intern_c_string ("foreign-selection"); |
e57ad4d8 | 2700 | staticpro (&Qforeign_selection); |
ede4db72 | 2701 | } |