Mercurial > hg > xemacs-beta
comparison src/select-gtk.c @ 462:0784d089fdc9 r21-2-46
Import from CVS: tag r21-2-46
author | cvs |
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date | Mon, 13 Aug 2007 11:44:37 +0200 |
parents | |
children | 183866b06e0b |
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1 /* GTK selection processing for XEmacs | |
2 Copyright (C) 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc. | |
3 | |
4 This file is part of XEmacs. | |
5 | |
6 XEmacs is free software; you can redistribute it and/or modify it | |
7 under the terms of the GNU General Public License as published by the | |
8 Free Software Foundation; either version 2, or (at your option) any | |
9 later version. | |
10 | |
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 for more details. | |
15 | |
16 You should have received a copy of the GNU General Public License | |
17 along with XEmacs; see the file COPYING. If not, write to | |
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 Boston, MA 02111-1307, USA. */ | |
20 | |
21 /* Synched up with: Not synched with FSF. */ | |
22 | |
23 /* Authorship: | |
24 | |
25 Written by Kevin Gallo for FSF Emacs. | |
26 Rewritten for mswindows by Jonathan Harris, December 1997 for 21.0. | |
27 Rewritten for GTK by William Perry, April 2000 for 21.1 | |
28 */ | |
29 | |
30 | |
31 #include <config.h> | |
32 #include "lisp.h" | |
33 #include "events.h" | |
34 #include "buffer.h" | |
35 #include "device.h" | |
36 #include "console-gtk.h" | |
37 #include "select.h" | |
38 #include "opaque.h" | |
39 #include "frame.h" | |
40 | |
41 static Lisp_Object Vretrieved_selection; | |
42 static gboolean waiting_for_selection; | |
43 Lisp_Object Vgtk_sent_selection_hooks; | |
44 | |
45 static Lisp_Object atom_to_symbol (struct device *d, GdkAtom atom); | |
46 static GdkAtom symbol_to_gtk_atom (struct device *d, Lisp_Object sym, int only_if_exists); | |
47 | |
48 static void lisp_data_to_selection_data (struct device *, | |
49 Lisp_Object obj, | |
50 unsigned char **data_ret, | |
51 GdkAtom *type_ret, | |
52 unsigned int *size_ret, | |
53 int *format_ret); | |
54 static Lisp_Object selection_data_to_lisp_data (struct device *, | |
55 Extbyte *data, | |
56 size_t size, | |
57 GdkAtom type, | |
58 int format); | |
59 | |
60 /* Set the selection data to GDK_NONE and NULL data, meaning we were | |
61 ** unable to do what they wanted. | |
62 */ | |
63 static void | |
64 gtk_decline_selection_request (GtkSelectionData *data) | |
65 { | |
66 gtk_selection_data_set (data, GDK_NONE, 0, NULL, 0); | |
67 } | |
68 | |
69 /* Used as an unwind-protect clause so that, if a selection-converter signals | |
70 an error, we tell the requestor that we were unable to do what they wanted | |
71 before we throw to top-level or go into the debugger or whatever. | |
72 */ | |
73 struct _selection_closure | |
74 { | |
75 GtkSelectionData *data; | |
76 gboolean successful; | |
77 }; | |
78 | |
79 static Lisp_Object | |
80 gtk_selection_request_lisp_error (Lisp_Object closure) | |
81 { | |
82 struct _selection_closure *cl = (struct _selection_closure *) | |
83 get_opaque_ptr (closure); | |
84 | |
85 free_opaque_ptr (closure); | |
86 if (cl->successful == TRUE) | |
87 return Qnil; | |
88 gtk_decline_selection_request (cl->data); | |
89 return Qnil; | |
90 } | |
91 | |
92 /* This provides the current selection to a requester. | |
93 ** | |
94 ** This is connected to the selection_get() signal of the application | |
95 ** shell in device-gtk.c:gtk_init_device(). | |
96 ** | |
97 ** This is radically different than the old selection code (21.1.x), | |
98 ** but has been modeled after the X code, and appears to work. | |
99 ** | |
100 ** WMP Feb 12 2001 | |
101 */ | |
102 void | |
103 emacs_gtk_selection_handle (GtkWidget *widget, | |
104 GtkSelectionData *selection_data, | |
105 guint info, | |
106 guint time_stamp, | |
107 gpointer data) | |
108 { | |
109 /* This function can GC */ | |
110 struct gcpro gcpro1, gcpro2; | |
111 Lisp_Object temp_obj; | |
112 Lisp_Object selection_symbol; | |
113 Lisp_Object target_symbol = Qnil; | |
114 Lisp_Object converted_selection = Qnil; | |
115 guint32 local_selection_time; | |
116 Lisp_Object successful_p = Qnil; | |
117 int count; | |
118 struct device *d = decode_gtk_device (Qnil); | |
119 struct _selection_closure *cl = NULL; | |
120 | |
121 GCPRO2 (converted_selection, target_symbol); | |
122 | |
123 selection_symbol = atom_to_symbol (d, selection_data->selection); | |
124 target_symbol = atom_to_symbol (d, selection_data->target); | |
125 | |
126 #if 0 /* #### MULTIPLE doesn't work yet */ | |
127 if (EQ (target_symbol, QMULTIPLE)) | |
128 target_symbol = fetch_multiple_target (selection_data); | |
129 #endif | |
130 | |
131 temp_obj = Fget_selection_timestamp (selection_symbol); | |
132 | |
133 if (NILP (temp_obj)) | |
134 { | |
135 /* We don't appear to have the selection. */ | |
136 gtk_decline_selection_request (selection_data); | |
137 | |
138 goto DONE_LABEL; | |
139 } | |
140 | |
141 local_selection_time = * (guint32 *) XOPAQUE_DATA (temp_obj); | |
142 | |
143 if (time_stamp != GDK_CURRENT_TIME && | |
144 local_selection_time > time_stamp) | |
145 { | |
146 /* Someone asked for the selection, and we have one, but not the one | |
147 they're looking for. */ | |
148 gtk_decline_selection_request (selection_data); | |
149 goto DONE_LABEL; | |
150 } | |
151 | |
152 converted_selection = select_convert_out (selection_symbol, | |
153 target_symbol, Qnil); | |
154 | |
155 /* #### Is this the right thing to do? I'm no X expert. -- ajh */ | |
156 if (NILP (converted_selection)) | |
157 { | |
158 /* We don't appear to have a selection in that data type. */ | |
159 gtk_decline_selection_request (selection_data); | |
160 goto DONE_LABEL; | |
161 } | |
162 | |
163 count = specpdl_depth (); | |
164 | |
165 cl = (struct _selection_closure *) xmalloc (sizeof (*cl)); | |
166 cl->data = selection_data; | |
167 cl->successful = FALSE; | |
168 | |
169 record_unwind_protect (gtk_selection_request_lisp_error, | |
170 make_opaque_ptr (cl)); | |
171 | |
172 { | |
173 unsigned char *data; | |
174 unsigned int size; | |
175 int format; | |
176 GdkAtom type; | |
177 lisp_data_to_selection_data (d, converted_selection, | |
178 &data, &type, &size, &format); | |
179 | |
180 gtk_selection_data_set (selection_data, type, format, data, size); | |
181 successful_p = Qt; | |
182 /* Tell x_selection_request_lisp_error() it's cool. */ | |
183 cl->successful = TRUE; | |
184 xfree (data); | |
185 } | |
186 | |
187 unbind_to (count, Qnil); | |
188 | |
189 DONE_LABEL: | |
190 | |
191 if (cl) xfree (cl); | |
192 | |
193 UNGCPRO; | |
194 | |
195 /* Let random lisp code notice that the selection has been asked for. */ | |
196 { | |
197 Lisp_Object val = Vgtk_sent_selection_hooks; | |
198 if (!UNBOUNDP (val) && !NILP (val)) | |
199 { | |
200 Lisp_Object rest; | |
201 if (CONSP (val) && !EQ (XCAR (val), Qlambda)) | |
202 for (rest = val; !NILP (rest); rest = Fcdr (rest)) | |
203 call3 (Fcar (rest), selection_symbol, target_symbol, successful_p); | |
204 else | |
205 call3 (val, selection_symbol, target_symbol, successful_p); | |
206 } | |
207 } | |
208 } | |
209 | |
210 | |
211 | |
212 static GtkWidget *reading_selection_reply; | |
213 static GdkAtom reading_which_selection; | |
214 static int selection_reply_timed_out; | |
215 | |
216 /* Gets the current selection owned by another application */ | |
217 void | |
218 emacs_gtk_selection_received (GtkWidget *widget, | |
219 GtkSelectionData *selection_data, | |
220 gpointer user_data) | |
221 { | |
222 waiting_for_selection = FALSE; | |
223 Vretrieved_selection = Qnil; | |
224 | |
225 reading_selection_reply = NULL; | |
226 | |
227 signal_fake_event (); | |
228 | |
229 if (selection_data->length < 0) | |
230 { | |
231 return; | |
232 } | |
233 | |
234 Vretrieved_selection = | |
235 selection_data_to_lisp_data (NULL, | |
236 selection_data->data, | |
237 selection_data->length, | |
238 selection_data->type, | |
239 selection_data->format); | |
240 } | |
241 | |
242 static int | |
243 selection_reply_done (void *ignore) | |
244 { | |
245 return !reading_selection_reply; | |
246 } | |
247 | |
248 /* Do protocol to read selection-data from the server. | |
249 Converts this to lisp data and returns it. | |
250 */ | |
251 static Lisp_Object | |
252 gtk_get_foreign_selection (Lisp_Object selection_symbol, | |
253 Lisp_Object target_type) | |
254 { | |
255 /* This function can GC */ | |
256 struct device *d = decode_gtk_device (Qnil); | |
257 GtkWidget *requestor = DEVICE_GTK_APP_SHELL (d); | |
258 guint32 requestor_time = DEVICE_GTK_MOUSE_TIMESTAMP (d); | |
259 GdkAtom selection_atom = symbol_to_gtk_atom (d, selection_symbol, 0); | |
260 int speccount; | |
261 GdkAtom type_atom = symbol_to_gtk_atom (d, (CONSP (target_type) ? | |
262 XCAR (target_type) : target_type), 0); | |
263 | |
264 gtk_selection_convert (requestor, selection_atom, type_atom, | |
265 requestor_time); | |
266 | |
267 signal_fake_event (); | |
268 | |
269 /* Block until the reply has been read. */ | |
270 reading_selection_reply = requestor; | |
271 reading_which_selection = selection_atom; | |
272 selection_reply_timed_out = 0; | |
273 | |
274 speccount = specpdl_depth (); | |
275 | |
276 #if 0 | |
277 /* add a timeout handler */ | |
278 if (gtk_selection_timeout > 0) | |
279 { | |
280 Lisp_Object id = Fadd_timeout (make_int (x_selection_timeout), | |
281 Qx_selection_reply_timeout_internal, | |
282 Qnil, Qnil); | |
283 record_unwind_protect (Fdisable_timeout, id); | |
284 } | |
285 #endif | |
286 | |
287 /* This is ^Gable */ | |
288 wait_delaying_user_input (selection_reply_done, 0); | |
289 | |
290 if (selection_reply_timed_out) | |
291 error ("timed out waiting for reply from selection owner"); | |
292 | |
293 unbind_to (speccount, Qnil); | |
294 | |
295 /* otherwise, the selection is waiting for us on the requested property. */ | |
296 return select_convert_in (selection_symbol, | |
297 target_type, | |
298 Vretrieved_selection); | |
299 } | |
300 | |
301 | |
302 #if 0 | |
303 static void | |
304 gtk_get_window_property (struct device *d, GtkWidget *window, GdkAtom property, | |
305 Extbyte **data_ret, int *bytes_ret, | |
306 GdkAtom *actual_type_ret, int *actual_format_ret, | |
307 unsigned long *actual_size_ret, int delete_p) | |
308 { | |
309 size_t total_size; | |
310 unsigned long bytes_remaining; | |
311 int offset = 0; | |
312 unsigned char *tmp_data = 0; | |
313 int result; | |
314 int buffer_size = SELECTION_QUANTUM (display); | |
315 if (buffer_size > MAX_SELECTION_QUANTUM) buffer_size = MAX_SELECTION_QUANTUM; | |
316 | |
317 /* First probe the thing to find out how big it is. */ | |
318 result = XGetWindowProperty (display, window, property, | |
319 0, 0, False, AnyPropertyType, | |
320 actual_type_ret, actual_format_ret, | |
321 actual_size_ret, | |
322 &bytes_remaining, &tmp_data); | |
323 if (result != Success) | |
324 { | |
325 *data_ret = 0; | |
326 *bytes_ret = 0; | |
327 return; | |
328 } | |
329 XFree ((char *) tmp_data); | |
330 | |
331 if (*actual_type_ret == None || *actual_format_ret == 0) | |
332 { | |
333 if (delete_p) XDeleteProperty (display, window, property); | |
334 *data_ret = 0; | |
335 *bytes_ret = 0; | |
336 return; | |
337 } | |
338 | |
339 total_size = bytes_remaining + 1; | |
340 *data_ret = (Extbyte *) xmalloc (total_size); | |
341 | |
342 /* Now read, until we've gotten it all. */ | |
343 while (bytes_remaining) | |
344 { | |
345 #if 0 | |
346 int last = bytes_remaining; | |
347 #endif | |
348 result = | |
349 XGetWindowProperty (display, window, property, | |
350 offset/4, buffer_size/4, | |
351 (delete_p ? True : False), | |
352 AnyPropertyType, | |
353 actual_type_ret, actual_format_ret, | |
354 actual_size_ret, &bytes_remaining, &tmp_data); | |
355 #if 0 | |
356 stderr_out ("<< read %d\n", last-bytes_remaining); | |
357 #endif | |
358 /* If this doesn't return Success at this point, it means that | |
359 some clod deleted the selection while we were in the midst of | |
360 reading it. Deal with that, I guess.... | |
361 */ | |
362 if (result != Success) break; | |
363 *actual_size_ret *= *actual_format_ret / 8; | |
364 memcpy ((*data_ret) + offset, tmp_data, *actual_size_ret); | |
365 offset += *actual_size_ret; | |
366 XFree ((char *) tmp_data); | |
367 } | |
368 *bytes_ret = offset; | |
369 } | |
370 | |
371 | |
372 static void | |
373 receive_incremental_selection (Display *display, Window window, Atom property, | |
374 /* this one is for error messages only */ | |
375 Lisp_Object target_type, | |
376 unsigned int min_size_bytes, | |
377 Extbyte **data_ret, int *size_bytes_ret, | |
378 Atom *type_ret, int *format_ret, | |
379 unsigned long *size_ret) | |
380 { | |
381 /* This function can GC */ | |
382 int offset = 0; | |
383 int prop_id; | |
384 *size_bytes_ret = min_size_bytes; | |
385 *data_ret = (Extbyte *) xmalloc (*size_bytes_ret); | |
386 #if 0 | |
387 stderr_out ("\nread INCR %d\n", min_size_bytes); | |
388 #endif | |
389 /* At this point, we have read an INCR property, and deleted it (which | |
390 is how we ack its receipt: the sending window will be selecting | |
391 PropertyNotify events on our window to notice this). | |
392 | |
393 Now, we must loop, waiting for the sending window to put a value on | |
394 that property, then reading the property, then deleting it to ack. | |
395 We are done when the sender places a property of length 0. | |
396 */ | |
397 prop_id = expect_property_change (display, window, property, | |
398 PropertyNewValue); | |
399 while (1) | |
400 { | |
401 Extbyte *tmp_data; | |
402 int tmp_size_bytes; | |
403 wait_for_property_change (prop_id); | |
404 /* expect it again immediately, because x_get_window_property may | |
405 .. no it won't, I don't get it. | |
406 .. Ok, I get it now, the Xt code that implements INCR is broken. | |
407 */ | |
408 prop_id = expect_property_change (display, window, property, | |
409 PropertyNewValue); | |
410 x_get_window_property (display, window, property, | |
411 &tmp_data, &tmp_size_bytes, | |
412 type_ret, format_ret, size_ret, 1); | |
413 | |
414 if (tmp_size_bytes == 0) /* we're done */ | |
415 { | |
416 #if 0 | |
417 stderr_out (" read INCR done\n"); | |
418 #endif | |
419 unexpect_property_change (prop_id); | |
420 if (tmp_data) xfree (tmp_data); | |
421 break; | |
422 } | |
423 #if 0 | |
424 stderr_out (" read INCR %d\n", tmp_size_bytes); | |
425 #endif | |
426 if (*size_bytes_ret < offset + tmp_size_bytes) | |
427 { | |
428 #if 0 | |
429 stderr_out (" read INCR realloc %d -> %d\n", | |
430 *size_bytes_ret, offset + tmp_size_bytes); | |
431 #endif | |
432 *size_bytes_ret = offset + tmp_size_bytes; | |
433 *data_ret = (Extbyte *) xrealloc (*data_ret, *size_bytes_ret); | |
434 } | |
435 memcpy ((*data_ret) + offset, tmp_data, tmp_size_bytes); | |
436 offset += tmp_size_bytes; | |
437 xfree (tmp_data); | |
438 } | |
439 } | |
440 | |
441 | |
442 static Lisp_Object | |
443 gtk_get_window_property_as_lisp_data (struct device *d, | |
444 GtkWidget *window, | |
445 GdkAtom property, | |
446 /* next two for error messages only */ | |
447 Lisp_Object target_type, | |
448 GdkAtom selection_atom) | |
449 { | |
450 /* This function can GC */ | |
451 Atom actual_type; | |
452 int actual_format; | |
453 unsigned long actual_size; | |
454 Extbyte *data = NULL; | |
455 int bytes = 0; | |
456 Lisp_Object val; | |
457 struct device *d = get_device_from_display (display); | |
458 | |
459 x_get_window_property (display, window, property, &data, &bytes, | |
460 &actual_type, &actual_format, &actual_size, 1); | |
461 if (! data) | |
462 { | |
463 if (XGetSelectionOwner (display, selection_atom)) | |
464 /* there is a selection owner */ | |
465 signal_error | |
466 (Qselection_conversion_error, | |
467 Fcons (build_string ("selection owner couldn't convert"), | |
468 Fcons (x_atom_to_symbol (d, selection_atom), | |
469 actual_type ? | |
470 list2 (target_type, x_atom_to_symbol (d, actual_type)) : | |
471 list1 (target_type)))); | |
472 else | |
473 signal_error (Qerror, | |
474 list2 (build_string ("no selection"), | |
475 x_atom_to_symbol (d, selection_atom))); | |
476 } | |
477 | |
478 if (actual_type == DEVICE_XATOM_INCR (d)) | |
479 { | |
480 /* Ok, that data wasn't *the* data, it was just the beginning. */ | |
481 | |
482 unsigned int min_size_bytes = * ((unsigned int *) data); | |
483 xfree (data); | |
484 receive_incremental_selection (display, window, property, target_type, | |
485 min_size_bytes, &data, &bytes, | |
486 &actual_type, &actual_format, | |
487 &actual_size); | |
488 } | |
489 | |
490 /* It's been read. Now convert it to a lisp object in some semi-rational | |
491 manner. */ | |
492 val = selection_data_to_lisp_data (d, data, bytes, | |
493 actual_type, actual_format); | |
494 | |
495 xfree (data); | |
496 return val; | |
497 } | |
498 #endif | |
499 | |
500 | |
501 static GdkAtom | |
502 symbol_to_gtk_atom (struct device *d, Lisp_Object sym, int only_if_exists) | |
503 { | |
504 if (NILP (sym)) return GDK_SELECTION_PRIMARY; | |
505 if (EQ (sym, Qt)) return GDK_SELECTION_SECONDARY; | |
506 if (EQ (sym, QPRIMARY)) return GDK_SELECTION_PRIMARY; | |
507 if (EQ (sym, QSECONDARY)) return GDK_SELECTION_SECONDARY; | |
508 | |
509 { | |
510 const char *nameext; | |
511 LISP_STRING_TO_EXTERNAL (Fsymbol_name (sym), nameext, Qctext); | |
512 return gdk_atom_intern (nameext, only_if_exists ? TRUE : FALSE); | |
513 } | |
514 } | |
515 | |
516 static Lisp_Object | |
517 atom_to_symbol (struct device *d, GdkAtom atom) | |
518 { | |
519 if (atom == GDK_SELECTION_PRIMARY) return (QPRIMARY); | |
520 if (atom == GDK_SELECTION_SECONDARY) return (QSECONDARY); | |
521 | |
522 { | |
523 char *intstr; | |
524 char *str = gdk_atom_name (atom); | |
525 | |
526 if (! str) return Qnil; | |
527 | |
528 TO_INTERNAL_FORMAT (C_STRING, str, | |
529 C_STRING_ALLOCA, intstr, | |
530 Qctext); | |
531 g_free (str); | |
532 return intern (intstr); | |
533 } | |
534 } | |
535 | |
536 /* #### These are going to move into Lisp code(!) with the aid of | |
537 some new functions I'm working on - ajh */ | |
538 | |
539 /* These functions convert from the selection data read from the server into | |
540 something that we can use from elisp, and vice versa. | |
541 | |
542 Type: Format: Size: Elisp Type: | |
543 ----- ------- ----- ----------- | |
544 * 8 * String | |
545 ATOM 32 1 Symbol | |
546 ATOM 32 > 1 Vector of Symbols | |
547 * 16 1 Integer | |
548 * 16 > 1 Vector of Integers | |
549 * 32 1 if <=16 bits: Integer | |
550 if > 16 bits: Cons of top16, bot16 | |
551 * 32 > 1 Vector of the above | |
552 | |
553 When converting a Lisp number to C, it is assumed to be of format 16 if | |
554 it is an integer, and of format 32 if it is a cons of two integers. | |
555 | |
556 When converting a vector of numbers from Elisp to C, it is assumed to be | |
557 of format 16 if every element in the vector is an integer, and is assumed | |
558 to be of format 32 if any element is a cons of two integers. | |
559 | |
560 When converting an object to C, it may be of the form (SYMBOL . <data>) | |
561 where SYMBOL is what we should claim that the type is. Format and | |
562 representation are as above. | |
563 | |
564 NOTE: Under Mule, when someone shoves us a string without a type, we | |
565 set the type to 'COMPOUND_TEXT and automatically convert to Compound | |
566 Text. If the string has a type, we assume that the user wants the | |
567 data sent as-is so we just do "binary" conversion. | |
568 */ | |
569 | |
570 | |
571 static Lisp_Object | |
572 selection_data_to_lisp_data (struct device *d, | |
573 Extbyte *data, | |
574 size_t size, | |
575 GdkAtom type, | |
576 int format) | |
577 { | |
578 if (type == gdk_atom_intern ("NULL", 0)) | |
579 return QNULL; | |
580 | |
581 /* Convert any 8-bit data to a string, for compactness. */ | |
582 else if (format == 8) | |
583 return make_ext_string (data, size, | |
584 ((type == gdk_atom_intern ("TEXT", FALSE)) || | |
585 (type == gdk_atom_intern ("COMPOUND_TEXT", FALSE))) | |
586 ? Qctext : Qbinary); | |
587 | |
588 /* Convert a single atom to a Lisp Symbol. | |
589 Convert a set of atoms to a vector of symbols. */ | |
590 else if (type == gdk_atom_intern ("ATOM", FALSE)) | |
591 { | |
592 if (size == sizeof (GdkAtom)) | |
593 return atom_to_symbol (d, *((GdkAtom *) data)); | |
594 else | |
595 { | |
596 int i; | |
597 int len = size / sizeof (GdkAtom); | |
598 Lisp_Object v = Fmake_vector (make_int (len), Qzero); | |
599 for (i = 0; i < len; i++) | |
600 Faset (v, make_int (i), atom_to_symbol (d, ((GdkAtom *) data) [i])); | |
601 return v; | |
602 } | |
603 } | |
604 | |
605 /* Convert a single 16 or small 32 bit number to a Lisp Int. | |
606 If the number is > 16 bits, convert it to a cons of integers, | |
607 16 bits in each half. | |
608 */ | |
609 else if (format == 32 && size == sizeof (long)) | |
610 return word_to_lisp (((unsigned long *) data) [0]); | |
611 else if (format == 16 && size == sizeof (short)) | |
612 return make_int ((int) (((unsigned short *) data) [0])); | |
613 | |
614 /* Convert any other kind of data to a vector of numbers, represented | |
615 as above (as an integer, or a cons of two 16 bit integers). | |
616 | |
617 #### Perhaps we should return the actual type to lisp as well. | |
618 | |
619 (x-get-selection-internal 'PRIMARY 'LINE_NUMBER) | |
620 ==> [4 4] | |
621 | |
622 and perhaps it should be | |
623 | |
624 (x-get-selection-internal 'PRIMARY 'LINE_NUMBER) | |
625 ==> (SPAN . [4 4]) | |
626 | |
627 Right now the fact that the return type was SPAN is discarded before | |
628 lisp code gets to see it. | |
629 */ | |
630 else if (format == 16) | |
631 { | |
632 int i; | |
633 Lisp_Object v = make_vector (size / 4, Qzero); | |
634 for (i = 0; i < (int) size / 4; i++) | |
635 { | |
636 int j = (int) ((unsigned short *) data) [i]; | |
637 Faset (v, make_int (i), make_int (j)); | |
638 } | |
639 return v; | |
640 } | |
641 else | |
642 { | |
643 int i; | |
644 Lisp_Object v = make_vector (size / 4, Qzero); | |
645 for (i = 0; i < (int) size / 4; i++) | |
646 { | |
647 unsigned long j = ((unsigned long *) data) [i]; | |
648 Faset (v, make_int (i), word_to_lisp (j)); | |
649 } | |
650 return v; | |
651 } | |
652 } | |
653 | |
654 | |
655 static void | |
656 lisp_data_to_selection_data (struct device *d, | |
657 Lisp_Object obj, | |
658 unsigned char **data_ret, | |
659 GdkAtom *type_ret, | |
660 unsigned int *size_ret, | |
661 int *format_ret) | |
662 { | |
663 Lisp_Object type = Qnil; | |
664 | |
665 if (CONSP (obj) && SYMBOLP (XCAR (obj))) | |
666 { | |
667 type = XCAR (obj); | |
668 obj = XCDR (obj); | |
669 if (CONSP (obj) && NILP (XCDR (obj))) | |
670 obj = XCAR (obj); | |
671 } | |
672 | |
673 if (EQ (obj, QNULL) || (EQ (type, QNULL))) | |
674 { /* This is not the same as declining */ | |
675 *format_ret = 32; | |
676 *size_ret = 0; | |
677 *data_ret = 0; | |
678 type = QNULL; | |
679 } | |
680 else if (STRINGP (obj)) | |
681 { | |
682 const Extbyte *extval; | |
683 Extcount extvallen; | |
684 | |
685 TO_EXTERNAL_FORMAT (LISP_STRING, obj, | |
686 ALLOCA, (extval, extvallen), | |
687 (NILP (type) ? Qctext : Qbinary)); | |
688 *format_ret = 8; | |
689 *size_ret = extvallen; | |
690 *data_ret = (unsigned char *) xmalloc (*size_ret); | |
691 memcpy (*data_ret, extval, *size_ret); | |
692 #ifdef MULE | |
693 if (NILP (type)) type = QCOMPOUND_TEXT; | |
694 #else | |
695 if (NILP (type)) type = QSTRING; | |
696 #endif | |
697 } | |
698 else if (CHARP (obj)) | |
699 { | |
700 Bufbyte buf[MAX_EMCHAR_LEN]; | |
701 Bytecount len; | |
702 const Extbyte *extval; | |
703 Extcount extvallen; | |
704 | |
705 *format_ret = 8; | |
706 len = set_charptr_emchar (buf, XCHAR (obj)); | |
707 TO_EXTERNAL_FORMAT (DATA, (buf, len), | |
708 ALLOCA, (extval, extvallen), | |
709 Qctext); | |
710 *size_ret = extvallen; | |
711 *data_ret = (unsigned char *) xmalloc (*size_ret); | |
712 memcpy (*data_ret, extval, *size_ret); | |
713 #ifdef MULE | |
714 if (NILP (type)) type = QCOMPOUND_TEXT; | |
715 #else | |
716 if (NILP (type)) type = QSTRING; | |
717 #endif | |
718 } | |
719 else if (SYMBOLP (obj)) | |
720 { | |
721 *format_ret = 32; | |
722 *size_ret = 1; | |
723 *data_ret = (unsigned char *) xmalloc (sizeof (GdkAtom) + 1); | |
724 (*data_ret) [sizeof (GdkAtom)] = 0; | |
725 (*(GdkAtom **) data_ret) [0] = symbol_to_gtk_atom (d, obj, 0); | |
726 if (NILP (type)) type = QATOM; | |
727 } | |
728 else if (INTP (obj) && | |
729 XINT (obj) <= 0x7FFF && | |
730 XINT (obj) >= -0x8000) | |
731 { | |
732 *format_ret = 16; | |
733 *size_ret = 1; | |
734 *data_ret = (unsigned char *) xmalloc (sizeof (short) + 1); | |
735 (*data_ret) [sizeof (short)] = 0; | |
736 (*(short **) data_ret) [0] = (short) XINT (obj); | |
737 if (NILP (type)) type = QINTEGER; | |
738 } | |
739 else if (INTP (obj) || CONSP (obj)) | |
740 { | |
741 *format_ret = 32; | |
742 *size_ret = 1; | |
743 *data_ret = (unsigned char *) xmalloc (sizeof (long) + 1); | |
744 (*data_ret) [sizeof (long)] = 0; | |
745 (*(unsigned long **) data_ret) [0] = lisp_to_word (obj); | |
746 if (NILP (type)) type = QINTEGER; | |
747 } | |
748 else if (VECTORP (obj)) | |
749 { | |
750 /* Lisp Vectors may represent a set of ATOMs; | |
751 a set of 16 or 32 bit INTEGERs; | |
752 or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...] | |
753 */ | |
754 int i; | |
755 | |
756 if (SYMBOLP (XVECTOR_DATA (obj) [0])) | |
757 /* This vector is an ATOM set */ | |
758 { | |
759 if (NILP (type)) type = QATOM; | |
760 *size_ret = XVECTOR_LENGTH (obj); | |
761 *format_ret = 32; | |
762 *data_ret = (unsigned char *) xmalloc ((*size_ret) * sizeof (GdkAtom)); | |
763 for (i = 0; i < (int) (*size_ret); i++) | |
764 if (SYMBOLP (XVECTOR_DATA (obj) [i])) | |
765 (*(GdkAtom **) data_ret) [i] = | |
766 symbol_to_gtk_atom (d, XVECTOR_DATA (obj) [i], 0); | |
767 else | |
768 signal_error (Qerror, /* Qselection_error */ | |
769 list2 (build_string | |
770 ("all elements of the vector must be of the same type"), | |
771 obj)); | |
772 } | |
773 #if 0 /* #### MULTIPLE doesn't work yet */ | |
774 else if (VECTORP (XVECTOR_DATA (obj) [0])) | |
775 /* This vector is an ATOM_PAIR set */ | |
776 { | |
777 if (NILP (type)) type = QATOM_PAIR; | |
778 *size_ret = XVECTOR_LENGTH (obj); | |
779 *format_ret = 32; | |
780 *data_ret = (unsigned char *) | |
781 xmalloc ((*size_ret) * sizeof (Atom) * 2); | |
782 for (i = 0; i < *size_ret; i++) | |
783 if (VECTORP (XVECTOR_DATA (obj) [i])) | |
784 { | |
785 Lisp_Object pair = XVECTOR_DATA (obj) [i]; | |
786 if (XVECTOR_LENGTH (pair) != 2) | |
787 signal_error (Qerror, | |
788 list2 (build_string | |
789 ("elements of the vector must be vectors of exactly two elements"), | |
790 pair)); | |
791 | |
792 (*(GdkAtom **) data_ret) [i * 2] = | |
793 symbol_to_gtk_atom (d, XVECTOR_DATA (pair) [0], 0); | |
794 (*(GdkAtom **) data_ret) [(i * 2) + 1] = | |
795 symbol_to_gtk_atom (d, XVECTOR_DATA (pair) [1], 0); | |
796 } | |
797 else | |
798 signal_error (Qerror, | |
799 list2 (build_string | |
800 ("all elements of the vector must be of the same type"), | |
801 obj)); | |
802 } | |
803 #endif | |
804 else | |
805 /* This vector is an INTEGER set, or something like it */ | |
806 { | |
807 *size_ret = XVECTOR_LENGTH (obj); | |
808 if (NILP (type)) type = QINTEGER; | |
809 *format_ret = 16; | |
810 for (i = 0; i < (int) (*size_ret); i++) | |
811 if (CONSP (XVECTOR_DATA (obj) [i])) | |
812 *format_ret = 32; | |
813 else if (!INTP (XVECTOR_DATA (obj) [i])) | |
814 signal_error (Qerror, /* Qselection_error */ | |
815 list2 (build_string | |
816 ("all elements of the vector must be integers or conses of integers"), | |
817 obj)); | |
818 | |
819 *data_ret = (unsigned char *) xmalloc (*size_ret * (*format_ret/8)); | |
820 for (i = 0; i < (int) (*size_ret); i++) | |
821 if (*format_ret == 32) | |
822 (*((unsigned long **) data_ret)) [i] = | |
823 lisp_to_word (XVECTOR_DATA (obj) [i]); | |
824 else | |
825 (*((unsigned short **) data_ret)) [i] = | |
826 (unsigned short) lisp_to_word (XVECTOR_DATA (obj) [i]); | |
827 } | |
828 } | |
829 else | |
830 signal_error (Qerror, /* Qselection_error */ | |
831 list2 (build_string ("unrecognized selection data"), | |
832 obj)); | |
833 | |
834 *type_ret = symbol_to_gtk_atom (d, type, 0); | |
835 } | |
836 | |
837 | |
838 | |
839 static Lisp_Object | |
840 gtk_own_selection (Lisp_Object selection_name, Lisp_Object selection_value, | |
841 Lisp_Object how_to_add, Lisp_Object selection_type) | |
842 { | |
843 struct device *d = decode_gtk_device (Qnil); | |
844 GtkWidget *selecting_window = GTK_WIDGET (DEVICE_GTK_APP_SHELL (d)); | |
845 Lisp_Object selection_time; | |
846 /* Use the time of the last-read mouse or keyboard event. | |
847 For selection purposes, we use this as a sleazy way of knowing what the | |
848 current time is in server-time. This assumes that the most recently read | |
849 mouse or keyboard event has something to do with the assertion of the | |
850 selection, which is probably true. | |
851 */ | |
852 guint32 thyme = DEVICE_GTK_MOUSE_TIMESTAMP (d); | |
853 GdkAtom selection_atom; | |
854 | |
855 CHECK_SYMBOL (selection_name); | |
856 selection_atom = symbol_to_gtk_atom (d, selection_name, 0); | |
857 | |
858 gtk_selection_owner_set (selecting_window, | |
859 selection_atom, | |
860 thyme); | |
861 | |
862 /* We do NOT use time_to_lisp() here any more, like we used to. | |
863 That assumed equivalence of time_t and Time, which is not | |
864 necessarily the case (e.g. under OSF on the Alphas, where | |
865 Time is a 64-bit quantity and time_t is a 32-bit quantity). | |
866 | |
867 Opaque pointers are the clean way to go here. | |
868 */ | |
869 selection_time = make_opaque (&thyme, sizeof (thyme)); | |
870 | |
871 return selection_time; | |
872 } | |
873 | |
874 static void | |
875 gtk_disown_selection (Lisp_Object selection, Lisp_Object timeval) | |
876 { | |
877 struct device *d = decode_gtk_device (Qnil); | |
878 GdkAtom selection_atom; | |
879 guint32 timestamp; | |
880 | |
881 CHECK_SYMBOL (selection); | |
882 selection_atom = symbol_to_gtk_atom (d, selection, 0); | |
883 | |
884 if (NILP (timeval)) | |
885 timestamp = DEVICE_GTK_MOUSE_TIMESTAMP (d); | |
886 else | |
887 { | |
888 time_t the_time; | |
889 lisp_to_time (timeval, &the_time); | |
890 timestamp = (guint32) the_time; | |
891 } | |
892 | |
893 gtk_selection_owner_set (NULL, selection_atom, timestamp); | |
894 } | |
895 | |
896 static Lisp_Object | |
897 gtk_selection_exists_p (Lisp_Object selection, | |
898 Lisp_Object selection_type) | |
899 { | |
900 struct device *d = decode_gtk_device (Qnil); | |
901 | |
902 return (gdk_selection_owner_get (symbol_to_gtk_atom (d, selection, 0)) ? Qt : Qnil); | |
903 } | |
904 | |
905 | |
906 | |
907 /************************************************************************/ | |
908 /* initialization */ | |
909 /************************************************************************/ | |
910 | |
911 void | |
912 syms_of_select_gtk (void) | |
913 { | |
914 } | |
915 | |
916 void | |
917 console_type_create_select_gtk (void) | |
918 { | |
919 CONSOLE_HAS_METHOD (gtk, own_selection); | |
920 CONSOLE_HAS_METHOD (gtk, disown_selection); | |
921 CONSOLE_HAS_METHOD (gtk, selection_exists_p); | |
922 CONSOLE_HAS_METHOD (gtk, get_foreign_selection); | |
923 } | |
924 | |
925 void | |
926 vars_of_select_gtk (void) | |
927 { | |
928 staticpro (&Vretrieved_selection); | |
929 Vretrieved_selection = Qnil; | |
930 | |
931 DEFVAR_LISP ("gtk-sent-selection-hooks", &Vgtk_sent_selection_hooks /* | |
932 A function or functions to be called after we have responded to some | |
933 other client's request for the value of a selection that we own. The | |
934 function(s) will be called with four arguments: | |
935 - the name of the selection (typically PRIMARY, SECONDARY, or CLIPBOARD); | |
936 - the name of the selection-type which we were requested to convert the | |
937 selection into before sending (for example, STRING or LENGTH); | |
938 - and whether we successfully transmitted the selection. | |
939 We might have failed (and declined the request) for any number of reasons, | |
940 including being asked for a selection that we no longer own, or being asked | |
941 to convert into a type that we don't know about or that is inappropriate. | |
942 This hook doesn't let you change the behavior of emacs's selection replies, | |
943 it merely informs you that they have happened. | |
944 */ ); | |
945 Vgtk_sent_selection_hooks = Qunbound; | |
946 } |