| 1 | /* X Selection processing for Emacs. |
| 2 | Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation. |
| 3 | |
| 4 | This file is part of GNU Emacs. |
| 5 | |
| 6 | GNU Emacs is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GNU Emacs is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GNU Emacs; see the file COPYING. If not, write to |
| 18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 19 | Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | |
| 22 | /* Rewritten by jwz */ |
| 23 | |
| 24 | #include <config.h> |
| 25 | #include "lisp.h" |
| 26 | #include "xterm.h" /* for all of the X includes */ |
| 27 | #include "dispextern.h" /* frame.h seems to want this */ |
| 28 | #include "frame.h" /* Need this to get the X window of selected_frame */ |
| 29 | #include "blockinput.h" |
| 30 | #include "charset.h" |
| 31 | #include "coding.h" |
| 32 | |
| 33 | #define CUT_BUFFER_SUPPORT |
| 34 | |
| 35 | Lisp_Object QPRIMARY, QSECONDARY, QSTRING, QINTEGER, QCLIPBOARD, QTIMESTAMP, |
| 36 | QTEXT, QDELETE, QMULTIPLE, QINCR, QEMACS_TMP, QTARGETS, QATOM, QNULL, |
| 37 | QATOM_PAIR; |
| 38 | |
| 39 | Lisp_Object QCOMPOUND_TEXT; /* This is a type of selection. */ |
| 40 | |
| 41 | #ifdef CUT_BUFFER_SUPPORT |
| 42 | Lisp_Object QCUT_BUFFER0, QCUT_BUFFER1, QCUT_BUFFER2, QCUT_BUFFER3, |
| 43 | QCUT_BUFFER4, QCUT_BUFFER5, QCUT_BUFFER6, QCUT_BUFFER7; |
| 44 | #endif |
| 45 | |
| 46 | static Lisp_Object Vx_lost_selection_hooks; |
| 47 | static Lisp_Object Vx_sent_selection_hooks; |
| 48 | /* Coding system for communicating with other X clients via cutbuffer, |
| 49 | selection, and clipboard. */ |
| 50 | static Lisp_Object Vclipboard_coding_system; |
| 51 | |
| 52 | /* If this is a smaller number than the max-request-size of the display, |
| 53 | emacs will use INCR selection transfer when the selection is larger |
| 54 | than this. The max-request-size is usually around 64k, so if you want |
| 55 | emacs to use incremental selection transfers when the selection is |
| 56 | smaller than that, set this. I added this mostly for debugging the |
| 57 | incremental transfer stuff, but it might improve server performance. */ |
| 58 | #define MAX_SELECTION_QUANTUM 0xFFFFFF |
| 59 | |
| 60 | #ifdef HAVE_X11R4 |
| 61 | #define SELECTION_QUANTUM(dpy) ((XMaxRequestSize(dpy) << 2) - 100) |
| 62 | #else |
| 63 | #define SELECTION_QUANTUM(dpy) (((dpy)->max_request_size << 2) - 100) |
| 64 | #endif |
| 65 | |
| 66 | /* The timestamp of the last input event Emacs received from the X server. */ |
| 67 | /* Defined in keyboard.c. */ |
| 68 | extern unsigned long last_event_timestamp; |
| 69 | |
| 70 | /* This is an association list whose elements are of the form |
| 71 | ( SELECTION-NAME SELECTION-VALUE SELECTION-TIMESTAMP FRAME) |
| 72 | SELECTION-NAME is a lisp symbol, whose name is the name of an X Atom. |
| 73 | SELECTION-VALUE is the value that emacs owns for that selection. |
| 74 | It may be any kind of Lisp object. |
| 75 | SELECTION-TIMESTAMP is the time at which emacs began owning this selection, |
| 76 | as a cons of two 16-bit numbers (making a 32 bit time.) |
| 77 | FRAME is the frame for which we made the selection. |
| 78 | If there is an entry in this alist, then it can be assumed that Emacs owns |
| 79 | that selection. |
| 80 | The only (eq) parts of this list that are visible from Lisp are the |
| 81 | selection-values. */ |
| 82 | static Lisp_Object Vselection_alist; |
| 83 | |
| 84 | /* This is an alist whose CARs are selection-types (whose names are the same |
| 85 | as the names of X Atoms) and whose CDRs are the names of Lisp functions to |
| 86 | call to convert the given Emacs selection value to a string representing |
| 87 | the given selection type. This is for Lisp-level extension of the emacs |
| 88 | selection handling. */ |
| 89 | static Lisp_Object Vselection_converter_alist; |
| 90 | |
| 91 | /* If the selection owner takes too long to reply to a selection request, |
| 92 | we give up on it. This is in milliseconds (0 = no timeout.) */ |
| 93 | static int x_selection_timeout; |
| 94 | \f |
| 95 | /* Utility functions */ |
| 96 | |
| 97 | static void lisp_data_to_selection_data (); |
| 98 | static Lisp_Object selection_data_to_lisp_data (); |
| 99 | static Lisp_Object x_get_window_property_as_lisp_data (); |
| 100 | |
| 101 | /* This converts a Lisp symbol to a server Atom, avoiding a server |
| 102 | roundtrip whenever possible. */ |
| 103 | |
| 104 | static Atom |
| 105 | symbol_to_x_atom (dpyinfo, display, sym) |
| 106 | struct x_display_info *dpyinfo; |
| 107 | Display *display; |
| 108 | Lisp_Object sym; |
| 109 | { |
| 110 | Atom val; |
| 111 | if (NILP (sym)) return 0; |
| 112 | if (EQ (sym, QPRIMARY)) return XA_PRIMARY; |
| 113 | if (EQ (sym, QSECONDARY)) return XA_SECONDARY; |
| 114 | if (EQ (sym, QSTRING)) return XA_STRING; |
| 115 | if (EQ (sym, QINTEGER)) return XA_INTEGER; |
| 116 | if (EQ (sym, QATOM)) return XA_ATOM; |
| 117 | if (EQ (sym, QCLIPBOARD)) return dpyinfo->Xatom_CLIPBOARD; |
| 118 | if (EQ (sym, QTIMESTAMP)) return dpyinfo->Xatom_TIMESTAMP; |
| 119 | if (EQ (sym, QTEXT)) return dpyinfo->Xatom_TEXT; |
| 120 | if (EQ (sym, QCOMPOUND_TEXT)) return dpyinfo->Xatom_COMPOUND_TEXT; |
| 121 | if (EQ (sym, QDELETE)) return dpyinfo->Xatom_DELETE; |
| 122 | if (EQ (sym, QMULTIPLE)) return dpyinfo->Xatom_MULTIPLE; |
| 123 | if (EQ (sym, QINCR)) return dpyinfo->Xatom_INCR; |
| 124 | if (EQ (sym, QEMACS_TMP)) return dpyinfo->Xatom_EMACS_TMP; |
| 125 | if (EQ (sym, QTARGETS)) return dpyinfo->Xatom_TARGETS; |
| 126 | if (EQ (sym, QNULL)) return dpyinfo->Xatom_NULL; |
| 127 | #ifdef CUT_BUFFER_SUPPORT |
| 128 | if (EQ (sym, QCUT_BUFFER0)) return XA_CUT_BUFFER0; |
| 129 | if (EQ (sym, QCUT_BUFFER1)) return XA_CUT_BUFFER1; |
| 130 | if (EQ (sym, QCUT_BUFFER2)) return XA_CUT_BUFFER2; |
| 131 | if (EQ (sym, QCUT_BUFFER3)) return XA_CUT_BUFFER3; |
| 132 | if (EQ (sym, QCUT_BUFFER4)) return XA_CUT_BUFFER4; |
| 133 | if (EQ (sym, QCUT_BUFFER5)) return XA_CUT_BUFFER5; |
| 134 | if (EQ (sym, QCUT_BUFFER6)) return XA_CUT_BUFFER6; |
| 135 | if (EQ (sym, QCUT_BUFFER7)) return XA_CUT_BUFFER7; |
| 136 | #endif |
| 137 | if (!SYMBOLP (sym)) abort (); |
| 138 | |
| 139 | #if 0 |
| 140 | fprintf (stderr, " XInternAtom %s\n", (char *) XSYMBOL (sym)->name->data); |
| 141 | #endif |
| 142 | BLOCK_INPUT; |
| 143 | val = XInternAtom (display, (char *) XSYMBOL (sym)->name->data, False); |
| 144 | UNBLOCK_INPUT; |
| 145 | return val; |
| 146 | } |
| 147 | |
| 148 | |
| 149 | /* This converts a server Atom to a Lisp symbol, avoiding server roundtrips |
| 150 | and calls to intern whenever possible. */ |
| 151 | |
| 152 | static Lisp_Object |
| 153 | x_atom_to_symbol (dpyinfo, display, atom) |
| 154 | struct x_display_info *dpyinfo; |
| 155 | Display *display; |
| 156 | Atom atom; |
| 157 | { |
| 158 | char *str; |
| 159 | Lisp_Object val; |
| 160 | if (! atom) return Qnil; |
| 161 | switch (atom) |
| 162 | { |
| 163 | case XA_PRIMARY: |
| 164 | return QPRIMARY; |
| 165 | case XA_SECONDARY: |
| 166 | return QSECONDARY; |
| 167 | case XA_STRING: |
| 168 | return QSTRING; |
| 169 | case XA_INTEGER: |
| 170 | return QINTEGER; |
| 171 | case XA_ATOM: |
| 172 | return QATOM; |
| 173 | #ifdef CUT_BUFFER_SUPPORT |
| 174 | case XA_CUT_BUFFER0: |
| 175 | return QCUT_BUFFER0; |
| 176 | case XA_CUT_BUFFER1: |
| 177 | return QCUT_BUFFER1; |
| 178 | case XA_CUT_BUFFER2: |
| 179 | return QCUT_BUFFER2; |
| 180 | case XA_CUT_BUFFER3: |
| 181 | return QCUT_BUFFER3; |
| 182 | case XA_CUT_BUFFER4: |
| 183 | return QCUT_BUFFER4; |
| 184 | case XA_CUT_BUFFER5: |
| 185 | return QCUT_BUFFER5; |
| 186 | case XA_CUT_BUFFER6: |
| 187 | return QCUT_BUFFER6; |
| 188 | case XA_CUT_BUFFER7: |
| 189 | return QCUT_BUFFER7; |
| 190 | #endif |
| 191 | } |
| 192 | |
| 193 | if (atom == dpyinfo->Xatom_CLIPBOARD) |
| 194 | return QCLIPBOARD; |
| 195 | if (atom == dpyinfo->Xatom_TIMESTAMP) |
| 196 | return QTIMESTAMP; |
| 197 | if (atom == dpyinfo->Xatom_TEXT) |
| 198 | return QTEXT; |
| 199 | if (atom == dpyinfo->Xatom_COMPOUND_TEXT) |
| 200 | return QCOMPOUND_TEXT; |
| 201 | if (atom == dpyinfo->Xatom_DELETE) |
| 202 | return QDELETE; |
| 203 | if (atom == dpyinfo->Xatom_MULTIPLE) |
| 204 | return QMULTIPLE; |
| 205 | if (atom == dpyinfo->Xatom_INCR) |
| 206 | return QINCR; |
| 207 | if (atom == dpyinfo->Xatom_EMACS_TMP) |
| 208 | return QEMACS_TMP; |
| 209 | if (atom == dpyinfo->Xatom_TARGETS) |
| 210 | return QTARGETS; |
| 211 | if (atom == dpyinfo->Xatom_NULL) |
| 212 | return QNULL; |
| 213 | |
| 214 | BLOCK_INPUT; |
| 215 | str = XGetAtomName (display, atom); |
| 216 | UNBLOCK_INPUT; |
| 217 | #if 0 |
| 218 | fprintf (stderr, " XGetAtomName --> %s\n", str); |
| 219 | #endif |
| 220 | if (! str) return Qnil; |
| 221 | val = intern (str); |
| 222 | BLOCK_INPUT; |
| 223 | /* This was allocated by Xlib, so use XFree. */ |
| 224 | XFree (str); |
| 225 | UNBLOCK_INPUT; |
| 226 | return val; |
| 227 | } |
| 228 | \f |
| 229 | /* Do protocol to assert ourself as a selection owner. |
| 230 | Update the Vselection_alist so that we can reply to later requests for |
| 231 | our selection. */ |
| 232 | |
| 233 | static void |
| 234 | x_own_selection (selection_name, selection_value) |
| 235 | Lisp_Object selection_name, selection_value; |
| 236 | { |
| 237 | Window selecting_window = FRAME_X_WINDOW (selected_frame); |
| 238 | Display *display = FRAME_X_DISPLAY (selected_frame); |
| 239 | Time time = last_event_timestamp; |
| 240 | Atom selection_atom; |
| 241 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
| 242 | int count; |
| 243 | |
| 244 | CHECK_SYMBOL (selection_name, 0); |
| 245 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection_name); |
| 246 | |
| 247 | BLOCK_INPUT; |
| 248 | count = x_catch_errors (display); |
| 249 | XSetSelectionOwner (display, selection_atom, selecting_window, time); |
| 250 | x_check_errors (display, "Can't set selection: %s"); |
| 251 | x_uncatch_errors (display, count); |
| 252 | UNBLOCK_INPUT; |
| 253 | |
| 254 | /* Now update the local cache */ |
| 255 | { |
| 256 | Lisp_Object selection_time; |
| 257 | Lisp_Object selection_data; |
| 258 | Lisp_Object prev_value; |
| 259 | |
| 260 | selection_time = long_to_cons ((unsigned long) time); |
| 261 | selection_data = Fcons (selection_name, |
| 262 | Fcons (selection_value, |
| 263 | Fcons (selection_time, |
| 264 | Fcons (Fselected_frame (), Qnil)))); |
| 265 | prev_value = assq_no_quit (selection_name, Vselection_alist); |
| 266 | |
| 267 | Vselection_alist = Fcons (selection_data, Vselection_alist); |
| 268 | |
| 269 | /* If we already owned the selection, remove the old selection data. |
| 270 | Perhaps we should destructively modify it instead. |
| 271 | Don't use Fdelq as that may QUIT. */ |
| 272 | if (!NILP (prev_value)) |
| 273 | { |
| 274 | Lisp_Object rest; /* we know it's not the CAR, so it's easy. */ |
| 275 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) |
| 276 | if (EQ (prev_value, Fcar (XCONS (rest)->cdr))) |
| 277 | { |
| 278 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); |
| 279 | break; |
| 280 | } |
| 281 | } |
| 282 | } |
| 283 | } |
| 284 | \f |
| 285 | /* Given a selection-name and desired type, look up our local copy of |
| 286 | the selection value and convert it to the type. |
| 287 | The value is nil or a string. |
| 288 | This function is used both for remote requests |
| 289 | and for local x-get-selection-internal. |
| 290 | |
| 291 | This calls random Lisp code, and may signal or gc. */ |
| 292 | |
| 293 | static Lisp_Object |
| 294 | x_get_local_selection (selection_symbol, target_type) |
| 295 | Lisp_Object selection_symbol, target_type; |
| 296 | { |
| 297 | Lisp_Object local_value; |
| 298 | Lisp_Object handler_fn, value, type, check; |
| 299 | int count; |
| 300 | |
| 301 | local_value = assq_no_quit (selection_symbol, Vselection_alist); |
| 302 | |
| 303 | if (NILP (local_value)) return Qnil; |
| 304 | |
| 305 | /* TIMESTAMP and MULTIPLE are special cases 'cause that's easiest. */ |
| 306 | if (EQ (target_type, QTIMESTAMP)) |
| 307 | { |
| 308 | handler_fn = Qnil; |
| 309 | value = XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car; |
| 310 | } |
| 311 | #if 0 |
| 312 | else if (EQ (target_type, QDELETE)) |
| 313 | { |
| 314 | handler_fn = Qnil; |
| 315 | Fx_disown_selection_internal |
| 316 | (selection_symbol, |
| 317 | XCONS (XCONS (XCONS (local_value)->cdr)->cdr)->car); |
| 318 | value = QNULL; |
| 319 | } |
| 320 | #endif |
| 321 | |
| 322 | #if 0 /* #### MULTIPLE doesn't work yet */ |
| 323 | else if (CONSP (target_type) |
| 324 | && XCONS (target_type)->car == QMULTIPLE) |
| 325 | { |
| 326 | Lisp_Object pairs; |
| 327 | int size; |
| 328 | int i; |
| 329 | pairs = XCONS (target_type)->cdr; |
| 330 | size = XVECTOR (pairs)->size; |
| 331 | /* If the target is MULTIPLE, then target_type looks like |
| 332 | (MULTIPLE . [[SELECTION1 TARGET1] [SELECTION2 TARGET2] ... ]) |
| 333 | We modify the second element of each pair in the vector and |
| 334 | return it as [[SELECTION1 <value1>] [SELECTION2 <value2>] ... ] |
| 335 | */ |
| 336 | for (i = 0; i < size; i++) |
| 337 | { |
| 338 | Lisp_Object pair; |
| 339 | pair = XVECTOR (pairs)->contents [i]; |
| 340 | XVECTOR (pair)->contents [1] |
| 341 | = x_get_local_selection (XVECTOR (pair)->contents [0], |
| 342 | XVECTOR (pair)->contents [1]); |
| 343 | } |
| 344 | return pairs; |
| 345 | } |
| 346 | #endif |
| 347 | else |
| 348 | { |
| 349 | /* Don't allow a quit within the converter. |
| 350 | When the user types C-g, he would be surprised |
| 351 | if by luck it came during a converter. */ |
| 352 | count = specpdl_ptr - specpdl; |
| 353 | specbind (Qinhibit_quit, Qt); |
| 354 | |
| 355 | CHECK_SYMBOL (target_type, 0); |
| 356 | handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist)); |
| 357 | if (!NILP (handler_fn)) |
| 358 | value = call3 (handler_fn, |
| 359 | selection_symbol, target_type, |
| 360 | XCONS (XCONS (local_value)->cdr)->car); |
| 361 | else |
| 362 | value = Qnil; |
| 363 | unbind_to (count, Qnil); |
| 364 | } |
| 365 | |
| 366 | /* Make sure this value is of a type that we could transmit |
| 367 | to another X client. */ |
| 368 | |
| 369 | check = value; |
| 370 | if (CONSP (value) |
| 371 | && SYMBOLP (XCONS (value)->car)) |
| 372 | type = XCONS (value)->car, |
| 373 | check = XCONS (value)->cdr; |
| 374 | |
| 375 | if (STRINGP (check) |
| 376 | || VECTORP (check) |
| 377 | || SYMBOLP (check) |
| 378 | || INTEGERP (check) |
| 379 | || NILP (value)) |
| 380 | return value; |
| 381 | /* Check for a value that cons_to_long could handle. */ |
| 382 | else if (CONSP (check) |
| 383 | && INTEGERP (XCONS (check)->car) |
| 384 | && (INTEGERP (XCONS (check)->cdr) |
| 385 | || |
| 386 | (CONSP (XCONS (check)->cdr) |
| 387 | && INTEGERP (XCONS (XCONS (check)->cdr)->car) |
| 388 | && NILP (XCONS (XCONS (check)->cdr)->cdr)))) |
| 389 | return value; |
| 390 | else |
| 391 | return |
| 392 | Fsignal (Qerror, |
| 393 | Fcons (build_string ("invalid data returned by selection-conversion function"), |
| 394 | Fcons (handler_fn, Fcons (value, Qnil)))); |
| 395 | } |
| 396 | \f |
| 397 | /* Subroutines of x_reply_selection_request. */ |
| 398 | |
| 399 | /* Send a SelectionNotify event to the requestor with property=None, |
| 400 | meaning we were unable to do what they wanted. */ |
| 401 | |
| 402 | static void |
| 403 | x_decline_selection_request (event) |
| 404 | struct input_event *event; |
| 405 | { |
| 406 | XSelectionEvent reply; |
| 407 | reply.type = SelectionNotify; |
| 408 | reply.display = SELECTION_EVENT_DISPLAY (event); |
| 409 | reply.requestor = SELECTION_EVENT_REQUESTOR (event); |
| 410 | reply.selection = SELECTION_EVENT_SELECTION (event); |
| 411 | reply.time = SELECTION_EVENT_TIME (event); |
| 412 | reply.target = SELECTION_EVENT_TARGET (event); |
| 413 | reply.property = None; |
| 414 | |
| 415 | BLOCK_INPUT; |
| 416 | XSendEvent (reply.display, reply.requestor, False, 0L, |
| 417 | (XEvent *) &reply); |
| 418 | XFlush (reply.display); |
| 419 | UNBLOCK_INPUT; |
| 420 | } |
| 421 | |
| 422 | /* This is the selection request currently being processed. |
| 423 | It is set to zero when the request is fully processed. */ |
| 424 | static struct input_event *x_selection_current_request; |
| 425 | |
| 426 | /* Used as an unwind-protect clause so that, if a selection-converter signals |
| 427 | an error, we tell the requester that we were unable to do what they wanted |
| 428 | before we throw to top-level or go into the debugger or whatever. */ |
| 429 | |
| 430 | static Lisp_Object |
| 431 | x_selection_request_lisp_error (ignore) |
| 432 | Lisp_Object ignore; |
| 433 | { |
| 434 | if (x_selection_current_request != 0) |
| 435 | x_decline_selection_request (x_selection_current_request); |
| 436 | return Qnil; |
| 437 | } |
| 438 | \f |
| 439 | |
| 440 | /* This stuff is so that INCR selections are reentrant (that is, so we can |
| 441 | be servicing multiple INCR selection requests simultaneously.) I haven't |
| 442 | actually tested that yet. */ |
| 443 | |
| 444 | /* Keep a list of the property changes that are awaited. */ |
| 445 | |
| 446 | struct prop_location |
| 447 | { |
| 448 | int identifier; |
| 449 | Display *display; |
| 450 | Window window; |
| 451 | Atom property; |
| 452 | int desired_state; |
| 453 | int arrived; |
| 454 | struct prop_location *next; |
| 455 | }; |
| 456 | |
| 457 | static struct prop_location *expect_property_change (); |
| 458 | static void wait_for_property_change (); |
| 459 | static void unexpect_property_change (); |
| 460 | static int waiting_for_other_props_on_window (); |
| 461 | |
| 462 | static int prop_location_identifier; |
| 463 | |
| 464 | static Lisp_Object property_change_reply; |
| 465 | |
| 466 | static struct prop_location *property_change_reply_object; |
| 467 | |
| 468 | static struct prop_location *property_change_wait_list; |
| 469 | |
| 470 | static Lisp_Object |
| 471 | queue_selection_requests_unwind (frame) |
| 472 | Lisp_Object frame; |
| 473 | { |
| 474 | FRAME_PTR f = XFRAME (frame); |
| 475 | |
| 476 | if (! NILP (frame)) |
| 477 | x_stop_queuing_selection_requests (FRAME_X_DISPLAY (f)); |
| 478 | return Qnil; |
| 479 | } |
| 480 | |
| 481 | /* Return some frame whose display info is DPYINFO. |
| 482 | Return nil if there is none. */ |
| 483 | |
| 484 | static Lisp_Object |
| 485 | some_frame_on_display (dpyinfo) |
| 486 | struct x_display_info *dpyinfo; |
| 487 | { |
| 488 | Lisp_Object list, frame; |
| 489 | |
| 490 | FOR_EACH_FRAME (list, frame) |
| 491 | { |
| 492 | if (FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) |
| 493 | return frame; |
| 494 | } |
| 495 | |
| 496 | return Qnil; |
| 497 | } |
| 498 | \f |
| 499 | /* Send the reply to a selection request event EVENT. |
| 500 | TYPE is the type of selection data requested. |
| 501 | DATA and SIZE describe the data to send, already converted. |
| 502 | FORMAT is the unit-size (in bits) of the data to be transmitted. */ |
| 503 | |
| 504 | static void |
| 505 | x_reply_selection_request (event, format, data, size, type) |
| 506 | struct input_event *event; |
| 507 | int format, size; |
| 508 | unsigned char *data; |
| 509 | Atom type; |
| 510 | { |
| 511 | XSelectionEvent reply; |
| 512 | Display *display = SELECTION_EVENT_DISPLAY (event); |
| 513 | Window window = SELECTION_EVENT_REQUESTOR (event); |
| 514 | int bytes_remaining; |
| 515 | int format_bytes = format/8; |
| 516 | int max_bytes = SELECTION_QUANTUM (display); |
| 517 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
| 518 | int count; |
| 519 | |
| 520 | if (max_bytes > MAX_SELECTION_QUANTUM) |
| 521 | max_bytes = MAX_SELECTION_QUANTUM; |
| 522 | |
| 523 | reply.type = SelectionNotify; |
| 524 | reply.display = display; |
| 525 | reply.requestor = window; |
| 526 | reply.selection = SELECTION_EVENT_SELECTION (event); |
| 527 | reply.time = SELECTION_EVENT_TIME (event); |
| 528 | reply.target = SELECTION_EVENT_TARGET (event); |
| 529 | reply.property = SELECTION_EVENT_PROPERTY (event); |
| 530 | if (reply.property == None) |
| 531 | reply.property = reply.target; |
| 532 | |
| 533 | /* #### XChangeProperty can generate BadAlloc, and we must handle it! */ |
| 534 | BLOCK_INPUT; |
| 535 | count = x_catch_errors (display); |
| 536 | |
| 537 | /* Store the data on the requested property. |
| 538 | If the selection is large, only store the first N bytes of it. |
| 539 | */ |
| 540 | bytes_remaining = size * format_bytes; |
| 541 | if (bytes_remaining <= max_bytes) |
| 542 | { |
| 543 | /* Send all the data at once, with minimal handshaking. */ |
| 544 | #if 0 |
| 545 | fprintf (stderr,"\nStoring all %d\n", bytes_remaining); |
| 546 | #endif |
| 547 | XChangeProperty (display, window, reply.property, type, format, |
| 548 | PropModeReplace, data, size); |
| 549 | /* At this point, the selection was successfully stored; ack it. */ |
| 550 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
| 551 | } |
| 552 | else |
| 553 | { |
| 554 | /* Send an INCR selection. */ |
| 555 | struct prop_location *wait_object; |
| 556 | int had_errors; |
| 557 | Lisp_Object frame; |
| 558 | |
| 559 | frame = some_frame_on_display (dpyinfo); |
| 560 | |
| 561 | /* If the display no longer has frames, we can't expect |
| 562 | to get many more selection requests from it, so don't |
| 563 | bother trying to queue them. */ |
| 564 | if (!NILP (frame)) |
| 565 | { |
| 566 | x_start_queuing_selection_requests (display); |
| 567 | |
| 568 | record_unwind_protect (queue_selection_requests_unwind, |
| 569 | frame); |
| 570 | } |
| 571 | |
| 572 | if (x_window_to_frame (dpyinfo, window)) /* #### debug */ |
| 573 | error ("Attempt to transfer an INCR to ourself!"); |
| 574 | #if 0 |
| 575 | fprintf (stderr, "\nINCR %d\n", bytes_remaining); |
| 576 | #endif |
| 577 | wait_object = expect_property_change (display, window, reply.property, |
| 578 | PropertyDelete); |
| 579 | |
| 580 | XChangeProperty (display, window, reply.property, dpyinfo->Xatom_INCR, |
| 581 | 32, PropModeReplace, |
| 582 | (unsigned char *) &bytes_remaining, 1); |
| 583 | XSelectInput (display, window, PropertyChangeMask); |
| 584 | /* Tell 'em the INCR data is there... */ |
| 585 | XSendEvent (display, window, False, 0L, (XEvent *) &reply); |
| 586 | XFlush (display); |
| 587 | |
| 588 | had_errors = x_had_errors_p (display); |
| 589 | UNBLOCK_INPUT; |
| 590 | |
| 591 | /* First, wait for the requester to ack by deleting the property. |
| 592 | This can run random lisp code (process handlers) or signal. */ |
| 593 | if (! had_errors) |
| 594 | wait_for_property_change (wait_object); |
| 595 | |
| 596 | while (bytes_remaining) |
| 597 | { |
| 598 | int i = ((bytes_remaining < max_bytes) |
| 599 | ? bytes_remaining |
| 600 | : max_bytes); |
| 601 | |
| 602 | BLOCK_INPUT; |
| 603 | |
| 604 | wait_object |
| 605 | = expect_property_change (display, window, reply.property, |
| 606 | PropertyDelete); |
| 607 | #if 0 |
| 608 | fprintf (stderr," INCR adding %d\n", i); |
| 609 | #endif |
| 610 | /* Append the next chunk of data to the property. */ |
| 611 | XChangeProperty (display, window, reply.property, type, format, |
| 612 | PropModeAppend, data, i / format_bytes); |
| 613 | bytes_remaining -= i; |
| 614 | data += i; |
| 615 | XFlush (display); |
| 616 | had_errors = x_had_errors_p (display); |
| 617 | UNBLOCK_INPUT; |
| 618 | |
| 619 | if (had_errors) |
| 620 | break; |
| 621 | |
| 622 | /* Now wait for the requester to ack this chunk by deleting the |
| 623 | property. This can run random lisp code or signal. |
| 624 | */ |
| 625 | wait_for_property_change (wait_object); |
| 626 | } |
| 627 | /* Now write a zero-length chunk to the property to tell the requester |
| 628 | that we're done. */ |
| 629 | #if 0 |
| 630 | fprintf (stderr," INCR done\n"); |
| 631 | #endif |
| 632 | BLOCK_INPUT; |
| 633 | if (! waiting_for_other_props_on_window (display, window)) |
| 634 | XSelectInput (display, window, 0L); |
| 635 | |
| 636 | XChangeProperty (display, window, reply.property, type, format, |
| 637 | PropModeReplace, data, 0); |
| 638 | } |
| 639 | |
| 640 | XFlush (display); |
| 641 | x_uncatch_errors (display, count); |
| 642 | UNBLOCK_INPUT; |
| 643 | } |
| 644 | \f |
| 645 | /* Handle a SelectionRequest event EVENT. |
| 646 | This is called from keyboard.c when such an event is found in the queue. */ |
| 647 | |
| 648 | void |
| 649 | x_handle_selection_request (event) |
| 650 | struct input_event *event; |
| 651 | { |
| 652 | struct gcpro gcpro1, gcpro2, gcpro3; |
| 653 | Lisp_Object local_selection_data; |
| 654 | Lisp_Object selection_symbol; |
| 655 | Lisp_Object target_symbol; |
| 656 | Lisp_Object converted_selection; |
| 657 | Time local_selection_time; |
| 658 | Lisp_Object successful_p; |
| 659 | int count; |
| 660 | struct x_display_info *dpyinfo |
| 661 | = x_display_info_for_display (SELECTION_EVENT_DISPLAY (event)); |
| 662 | |
| 663 | local_selection_data = Qnil; |
| 664 | target_symbol = Qnil; |
| 665 | converted_selection = Qnil; |
| 666 | successful_p = Qnil; |
| 667 | |
| 668 | GCPRO3 (local_selection_data, converted_selection, target_symbol); |
| 669 | |
| 670 | selection_symbol = x_atom_to_symbol (dpyinfo, |
| 671 | SELECTION_EVENT_DISPLAY (event), |
| 672 | SELECTION_EVENT_SELECTION (event)); |
| 673 | |
| 674 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); |
| 675 | |
| 676 | if (NILP (local_selection_data)) |
| 677 | { |
| 678 | /* Someone asked for the selection, but we don't have it any more. |
| 679 | */ |
| 680 | x_decline_selection_request (event); |
| 681 | goto DONE; |
| 682 | } |
| 683 | |
| 684 | local_selection_time = (Time) |
| 685 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); |
| 686 | |
| 687 | if (SELECTION_EVENT_TIME (event) != CurrentTime |
| 688 | && local_selection_time > SELECTION_EVENT_TIME (event)) |
| 689 | { |
| 690 | /* Someone asked for the selection, and we have one, but not the one |
| 691 | they're looking for. |
| 692 | */ |
| 693 | x_decline_selection_request (event); |
| 694 | goto DONE; |
| 695 | } |
| 696 | |
| 697 | count = specpdl_ptr - specpdl; |
| 698 | x_selection_current_request = event; |
| 699 | record_unwind_protect (x_selection_request_lisp_error, Qnil); |
| 700 | |
| 701 | target_symbol = x_atom_to_symbol (dpyinfo, SELECTION_EVENT_DISPLAY (event), |
| 702 | SELECTION_EVENT_TARGET (event)); |
| 703 | |
| 704 | #if 0 /* #### MULTIPLE doesn't work yet */ |
| 705 | if (EQ (target_symbol, QMULTIPLE)) |
| 706 | target_symbol = fetch_multiple_target (event); |
| 707 | #endif |
| 708 | |
| 709 | /* Convert lisp objects back into binary data */ |
| 710 | |
| 711 | converted_selection |
| 712 | = x_get_local_selection (selection_symbol, target_symbol); |
| 713 | |
| 714 | if (! NILP (converted_selection)) |
| 715 | { |
| 716 | unsigned char *data; |
| 717 | unsigned int size; |
| 718 | int format; |
| 719 | Atom type; |
| 720 | int nofree; |
| 721 | |
| 722 | lisp_data_to_selection_data (SELECTION_EVENT_DISPLAY (event), |
| 723 | converted_selection, |
| 724 | &data, &type, &size, &format, &nofree); |
| 725 | |
| 726 | x_reply_selection_request (event, format, data, size, type); |
| 727 | successful_p = Qt; |
| 728 | |
| 729 | /* Indicate we have successfully processed this event. */ |
| 730 | x_selection_current_request = 0; |
| 731 | |
| 732 | /* Use free, not XFree, because lisp_data_to_selection_data |
| 733 | calls xmalloc itself. */ |
| 734 | if (!nofree) |
| 735 | free (data); |
| 736 | } |
| 737 | unbind_to (count, Qnil); |
| 738 | |
| 739 | DONE: |
| 740 | |
| 741 | UNGCPRO; |
| 742 | |
| 743 | /* Let random lisp code notice that the selection has been asked for. */ |
| 744 | { |
| 745 | Lisp_Object rest; |
| 746 | rest = Vx_sent_selection_hooks; |
| 747 | if (!EQ (rest, Qunbound)) |
| 748 | for (; CONSP (rest); rest = Fcdr (rest)) |
| 749 | call3 (Fcar (rest), selection_symbol, target_symbol, successful_p); |
| 750 | } |
| 751 | } |
| 752 | \f |
| 753 | /* Handle a SelectionClear event EVENT, which indicates that some other |
| 754 | client cleared out our previously asserted selection. |
| 755 | This is called from keyboard.c when such an event is found in the queue. */ |
| 756 | |
| 757 | void |
| 758 | x_handle_selection_clear (event) |
| 759 | struct input_event *event; |
| 760 | { |
| 761 | Display *display = SELECTION_EVENT_DISPLAY (event); |
| 762 | Atom selection = SELECTION_EVENT_SELECTION (event); |
| 763 | Time changed_owner_time = SELECTION_EVENT_TIME (event); |
| 764 | |
| 765 | Lisp_Object selection_symbol, local_selection_data; |
| 766 | Time local_selection_time; |
| 767 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
| 768 | |
| 769 | selection_symbol = x_atom_to_symbol (dpyinfo, display, selection); |
| 770 | |
| 771 | local_selection_data = assq_no_quit (selection_symbol, Vselection_alist); |
| 772 | |
| 773 | /* Well, we already believe that we don't own it, so that's just fine. */ |
| 774 | if (NILP (local_selection_data)) return; |
| 775 | |
| 776 | local_selection_time = (Time) |
| 777 | cons_to_long (XCONS (XCONS (XCONS (local_selection_data)->cdr)->cdr)->car); |
| 778 | |
| 779 | /* This SelectionClear is for a selection that we no longer own, so we can |
| 780 | disregard it. (That is, we have reasserted the selection since this |
| 781 | request was generated.) */ |
| 782 | |
| 783 | if (changed_owner_time != CurrentTime |
| 784 | && local_selection_time > changed_owner_time) |
| 785 | return; |
| 786 | |
| 787 | /* Otherwise, we're really honest and truly being told to drop it. |
| 788 | Don't use Fdelq as that may QUIT;. */ |
| 789 | |
| 790 | if (EQ (local_selection_data, Fcar (Vselection_alist))) |
| 791 | Vselection_alist = Fcdr (Vselection_alist); |
| 792 | else |
| 793 | { |
| 794 | Lisp_Object rest; |
| 795 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) |
| 796 | if (EQ (local_selection_data, Fcar (XCONS (rest)->cdr))) |
| 797 | { |
| 798 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); |
| 799 | break; |
| 800 | } |
| 801 | } |
| 802 | |
| 803 | /* Let random lisp code notice that the selection has been stolen. */ |
| 804 | |
| 805 | { |
| 806 | Lisp_Object rest; |
| 807 | rest = Vx_lost_selection_hooks; |
| 808 | if (!EQ (rest, Qunbound)) |
| 809 | { |
| 810 | for (; CONSP (rest); rest = Fcdr (rest)) |
| 811 | call1 (Fcar (rest), selection_symbol); |
| 812 | prepare_menu_bars (); |
| 813 | redisplay_preserve_echo_area (); |
| 814 | } |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | /* Clear all selections that were made from frame F. |
| 819 | We do this when about to delete a frame. */ |
| 820 | |
| 821 | void |
| 822 | x_clear_frame_selections (f) |
| 823 | FRAME_PTR f; |
| 824 | { |
| 825 | Lisp_Object frame; |
| 826 | Lisp_Object rest; |
| 827 | |
| 828 | XSETFRAME (frame, f); |
| 829 | |
| 830 | /* Otherwise, we're really honest and truly being told to drop it. |
| 831 | Don't use Fdelq as that may QUIT;. */ |
| 832 | |
| 833 | /* Delete elements from the beginning of Vselection_alist. */ |
| 834 | while (!NILP (Vselection_alist) |
| 835 | && EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (Vselection_alist))))))) |
| 836 | { |
| 837 | /* Let random Lisp code notice that the selection has been stolen. */ |
| 838 | Lisp_Object hooks, selection_symbol; |
| 839 | |
| 840 | hooks = Vx_lost_selection_hooks; |
| 841 | selection_symbol = Fcar (Fcar (Vselection_alist)); |
| 842 | |
| 843 | if (!EQ (hooks, Qunbound)) |
| 844 | { |
| 845 | for (; CONSP (hooks); hooks = Fcdr (hooks)) |
| 846 | call1 (Fcar (hooks), selection_symbol); |
| 847 | #if 0 /* This can crash when deleting a frame |
| 848 | from x_connection_closed. Anyway, it seems unnecessary; |
| 849 | something else should cause a redisplay. */ |
| 850 | redisplay_preserve_echo_area (); |
| 851 | #endif |
| 852 | } |
| 853 | |
| 854 | Vselection_alist = Fcdr (Vselection_alist); |
| 855 | } |
| 856 | |
| 857 | /* Delete elements after the beginning of Vselection_alist. */ |
| 858 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) |
| 859 | if (EQ (frame, Fcar (Fcdr (Fcdr (Fcdr (Fcar (XCONS (rest)->cdr))))))) |
| 860 | { |
| 861 | /* Let random Lisp code notice that the selection has been stolen. */ |
| 862 | Lisp_Object hooks, selection_symbol; |
| 863 | |
| 864 | hooks = Vx_lost_selection_hooks; |
| 865 | selection_symbol = Fcar (Fcar (XCONS (rest)->cdr)); |
| 866 | |
| 867 | if (!EQ (hooks, Qunbound)) |
| 868 | { |
| 869 | for (; CONSP (hooks); hooks = Fcdr (hooks)) |
| 870 | call1 (Fcar (hooks), selection_symbol); |
| 871 | #if 0 /* See above */ |
| 872 | redisplay_preserve_echo_area (); |
| 873 | #endif |
| 874 | } |
| 875 | XCONS (rest)->cdr = Fcdr (XCONS (rest)->cdr); |
| 876 | break; |
| 877 | } |
| 878 | } |
| 879 | \f |
| 880 | /* Nonzero if any properties for DISPLAY and WINDOW |
| 881 | are on the list of what we are waiting for. */ |
| 882 | |
| 883 | static int |
| 884 | waiting_for_other_props_on_window (display, window) |
| 885 | Display *display; |
| 886 | Window window; |
| 887 | { |
| 888 | struct prop_location *rest = property_change_wait_list; |
| 889 | while (rest) |
| 890 | if (rest->display == display && rest->window == window) |
| 891 | return 1; |
| 892 | else |
| 893 | rest = rest->next; |
| 894 | return 0; |
| 895 | } |
| 896 | |
| 897 | /* Add an entry to the list of property changes we are waiting for. |
| 898 | DISPLAY, WINDOW, PROPERTY, STATE describe what we will wait for. |
| 899 | The return value is a number that uniquely identifies |
| 900 | this awaited property change. */ |
| 901 | |
| 902 | static struct prop_location * |
| 903 | expect_property_change (display, window, property, state) |
| 904 | Display *display; |
| 905 | Window window; |
| 906 | Atom property; |
| 907 | int state; |
| 908 | { |
| 909 | struct prop_location *pl |
| 910 | = (struct prop_location *) xmalloc (sizeof (struct prop_location)); |
| 911 | pl->identifier = ++prop_location_identifier; |
| 912 | pl->display = display; |
| 913 | pl->window = window; |
| 914 | pl->property = property; |
| 915 | pl->desired_state = state; |
| 916 | pl->next = property_change_wait_list; |
| 917 | pl->arrived = 0; |
| 918 | property_change_wait_list = pl; |
| 919 | return pl; |
| 920 | } |
| 921 | |
| 922 | /* Delete an entry from the list of property changes we are waiting for. |
| 923 | IDENTIFIER is the number that uniquely identifies the entry. */ |
| 924 | |
| 925 | static void |
| 926 | unexpect_property_change (location) |
| 927 | struct prop_location *location; |
| 928 | { |
| 929 | struct prop_location *prev = 0, *rest = property_change_wait_list; |
| 930 | while (rest) |
| 931 | { |
| 932 | if (rest == location) |
| 933 | { |
| 934 | if (prev) |
| 935 | prev->next = rest->next; |
| 936 | else |
| 937 | property_change_wait_list = rest->next; |
| 938 | free (rest); |
| 939 | return; |
| 940 | } |
| 941 | prev = rest; |
| 942 | rest = rest->next; |
| 943 | } |
| 944 | } |
| 945 | |
| 946 | /* Remove the property change expectation element for IDENTIFIER. */ |
| 947 | |
| 948 | static Lisp_Object |
| 949 | wait_for_property_change_unwind (identifierval) |
| 950 | Lisp_Object identifierval; |
| 951 | { |
| 952 | unexpect_property_change ((struct prop_location *) |
| 953 | (XFASTINT (XCONS (identifierval)->car) << 16 |
| 954 | | XFASTINT (XCONS (identifierval)->cdr))); |
| 955 | return Qnil; |
| 956 | } |
| 957 | |
| 958 | /* Actually wait for a property change. |
| 959 | IDENTIFIER should be the value that expect_property_change returned. */ |
| 960 | |
| 961 | static void |
| 962 | wait_for_property_change (location) |
| 963 | struct prop_location *location; |
| 964 | { |
| 965 | int secs, usecs; |
| 966 | int count = specpdl_ptr - specpdl; |
| 967 | Lisp_Object tem; |
| 968 | |
| 969 | tem = Fcons (Qnil, Qnil); |
| 970 | XSETFASTINT (XCONS (tem)->car, (EMACS_UINT)location >> 16); |
| 971 | XSETFASTINT (XCONS (tem)->cdr, (EMACS_UINT)location & 0xffff); |
| 972 | |
| 973 | /* Make sure to do unexpect_property_change if we quit or err. */ |
| 974 | record_unwind_protect (wait_for_property_change_unwind, tem); |
| 975 | |
| 976 | XCONS (property_change_reply)->car = Qnil; |
| 977 | |
| 978 | property_change_reply_object = location; |
| 979 | /* If the event we are waiting for arrives beyond here, it will set |
| 980 | property_change_reply, because property_change_reply_object says so. */ |
| 981 | if (! location->arrived) |
| 982 | { |
| 983 | secs = x_selection_timeout / 1000; |
| 984 | usecs = (x_selection_timeout % 1000) * 1000; |
| 985 | wait_reading_process_input (secs, usecs, property_change_reply, 0); |
| 986 | |
| 987 | if (NILP (XCONS (property_change_reply)->car)) |
| 988 | error ("Timed out waiting for property-notify event"); |
| 989 | } |
| 990 | |
| 991 | unbind_to (count, Qnil); |
| 992 | } |
| 993 | |
| 994 | /* Called from XTread_socket in response to a PropertyNotify event. */ |
| 995 | |
| 996 | void |
| 997 | x_handle_property_notify (event) |
| 998 | XPropertyEvent *event; |
| 999 | { |
| 1000 | struct prop_location *prev = 0, *rest = property_change_wait_list; |
| 1001 | while (rest) |
| 1002 | { |
| 1003 | if (rest->property == event->atom |
| 1004 | && rest->window == event->window |
| 1005 | && rest->display == event->display |
| 1006 | && rest->desired_state == event->state) |
| 1007 | { |
| 1008 | #if 0 |
| 1009 | fprintf (stderr, "Saw expected prop-%s on %s\n", |
| 1010 | (event->state == PropertyDelete ? "delete" : "change"), |
| 1011 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, event->display, |
| 1012 | event->atom)) |
| 1013 | ->name->data); |
| 1014 | #endif |
| 1015 | |
| 1016 | rest->arrived = 1; |
| 1017 | |
| 1018 | /* If this is the one wait_for_property_change is waiting for, |
| 1019 | tell it to wake up. */ |
| 1020 | if (rest == property_change_reply_object) |
| 1021 | XCONS (property_change_reply)->car = Qt; |
| 1022 | |
| 1023 | if (prev) |
| 1024 | prev->next = rest->next; |
| 1025 | else |
| 1026 | property_change_wait_list = rest->next; |
| 1027 | free (rest); |
| 1028 | return; |
| 1029 | } |
| 1030 | prev = rest; |
| 1031 | rest = rest->next; |
| 1032 | } |
| 1033 | #if 0 |
| 1034 | fprintf (stderr, "Saw UNexpected prop-%s on %s\n", |
| 1035 | (event->state == PropertyDelete ? "delete" : "change"), |
| 1036 | (char *) XSYMBOL (x_atom_to_symbol (dpyinfo, |
| 1037 | event->display, event->atom)) |
| 1038 | ->name->data); |
| 1039 | #endif |
| 1040 | } |
| 1041 | |
| 1042 | |
| 1043 | \f |
| 1044 | #if 0 /* #### MULTIPLE doesn't work yet */ |
| 1045 | |
| 1046 | static Lisp_Object |
| 1047 | fetch_multiple_target (event) |
| 1048 | XSelectionRequestEvent *event; |
| 1049 | { |
| 1050 | Display *display = event->display; |
| 1051 | Window window = event->requestor; |
| 1052 | Atom target = event->target; |
| 1053 | Atom selection_atom = event->selection; |
| 1054 | int result; |
| 1055 | |
| 1056 | return |
| 1057 | Fcons (QMULTIPLE, |
| 1058 | x_get_window_property_as_lisp_data (display, window, target, |
| 1059 | QMULTIPLE, selection_atom)); |
| 1060 | } |
| 1061 | |
| 1062 | static Lisp_Object |
| 1063 | copy_multiple_data (obj) |
| 1064 | Lisp_Object obj; |
| 1065 | { |
| 1066 | Lisp_Object vec; |
| 1067 | int i; |
| 1068 | int size; |
| 1069 | if (CONSP (obj)) |
| 1070 | return Fcons (XCONS (obj)->car, copy_multiple_data (XCONS (obj)->cdr)); |
| 1071 | |
| 1072 | CHECK_VECTOR (obj, 0); |
| 1073 | vec = Fmake_vector (size = XVECTOR (obj)->size, Qnil); |
| 1074 | for (i = 0; i < size; i++) |
| 1075 | { |
| 1076 | Lisp_Object vec2 = XVECTOR (obj)->contents [i]; |
| 1077 | CHECK_VECTOR (vec2, 0); |
| 1078 | if (XVECTOR (vec2)->size != 2) |
| 1079 | /* ??? Confusing error message */ |
| 1080 | Fsignal (Qerror, Fcons (build_string ("vectors must be of length 2"), |
| 1081 | Fcons (vec2, Qnil))); |
| 1082 | XVECTOR (vec)->contents [i] = Fmake_vector (2, Qnil); |
| 1083 | XVECTOR (XVECTOR (vec)->contents [i])->contents [0] |
| 1084 | = XVECTOR (vec2)->contents [0]; |
| 1085 | XVECTOR (XVECTOR (vec)->contents [i])->contents [1] |
| 1086 | = XVECTOR (vec2)->contents [1]; |
| 1087 | } |
| 1088 | return vec; |
| 1089 | } |
| 1090 | |
| 1091 | #endif |
| 1092 | |
| 1093 | \f |
| 1094 | /* Variables for communication with x_handle_selection_notify. */ |
| 1095 | static Atom reading_which_selection; |
| 1096 | static Lisp_Object reading_selection_reply; |
| 1097 | static Window reading_selection_window; |
| 1098 | |
| 1099 | /* Do protocol to read selection-data from the server. |
| 1100 | Converts this to Lisp data and returns it. */ |
| 1101 | |
| 1102 | static Lisp_Object |
| 1103 | x_get_foreign_selection (selection_symbol, target_type) |
| 1104 | Lisp_Object selection_symbol, target_type; |
| 1105 | { |
| 1106 | Window requestor_window = FRAME_X_WINDOW (selected_frame); |
| 1107 | Display *display = FRAME_X_DISPLAY (selected_frame); |
| 1108 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
| 1109 | Time requestor_time = last_event_timestamp; |
| 1110 | Atom target_property = dpyinfo->Xatom_EMACS_TMP; |
| 1111 | Atom selection_atom = symbol_to_x_atom (dpyinfo, display, selection_symbol); |
| 1112 | Atom type_atom; |
| 1113 | int secs, usecs; |
| 1114 | int count; |
| 1115 | Lisp_Object frame; |
| 1116 | |
| 1117 | if (CONSP (target_type)) |
| 1118 | type_atom = symbol_to_x_atom (dpyinfo, display, XCONS (target_type)->car); |
| 1119 | else |
| 1120 | type_atom = symbol_to_x_atom (dpyinfo, display, target_type); |
| 1121 | |
| 1122 | BLOCK_INPUT; |
| 1123 | count = x_catch_errors (display); |
| 1124 | XConvertSelection (display, selection_atom, type_atom, target_property, |
| 1125 | requestor_window, requestor_time); |
| 1126 | XFlush (display); |
| 1127 | |
| 1128 | /* Prepare to block until the reply has been read. */ |
| 1129 | reading_selection_window = requestor_window; |
| 1130 | reading_which_selection = selection_atom; |
| 1131 | XCONS (reading_selection_reply)->car = Qnil; |
| 1132 | |
| 1133 | frame = some_frame_on_display (dpyinfo); |
| 1134 | |
| 1135 | /* If the display no longer has frames, we can't expect |
| 1136 | to get many more selection requests from it, so don't |
| 1137 | bother trying to queue them. */ |
| 1138 | if (!NILP (frame)) |
| 1139 | { |
| 1140 | x_start_queuing_selection_requests (display); |
| 1141 | |
| 1142 | record_unwind_protect (queue_selection_requests_unwind, |
| 1143 | frame); |
| 1144 | } |
| 1145 | UNBLOCK_INPUT; |
| 1146 | |
| 1147 | /* This allows quits. Also, don't wait forever. */ |
| 1148 | secs = x_selection_timeout / 1000; |
| 1149 | usecs = (x_selection_timeout % 1000) * 1000; |
| 1150 | wait_reading_process_input (secs, usecs, reading_selection_reply, 0); |
| 1151 | |
| 1152 | BLOCK_INPUT; |
| 1153 | x_check_errors (display, "Cannot get selection: %s"); |
| 1154 | x_uncatch_errors (display, count); |
| 1155 | UNBLOCK_INPUT; |
| 1156 | |
| 1157 | if (NILP (XCONS (reading_selection_reply)->car)) |
| 1158 | error ("Timed out waiting for reply from selection owner"); |
| 1159 | if (EQ (XCONS (reading_selection_reply)->car, Qlambda)) |
| 1160 | error ("No `%s' selection", XSYMBOL (selection_symbol)->name->data); |
| 1161 | |
| 1162 | /* Otherwise, the selection is waiting for us on the requested property. */ |
| 1163 | return |
| 1164 | x_get_window_property_as_lisp_data (display, requestor_window, |
| 1165 | target_property, target_type, |
| 1166 | selection_atom); |
| 1167 | } |
| 1168 | \f |
| 1169 | /* Subroutines of x_get_window_property_as_lisp_data */ |
| 1170 | |
| 1171 | /* Use free, not XFree, to free the data obtained with this function. */ |
| 1172 | |
| 1173 | static void |
| 1174 | x_get_window_property (display, window, property, data_ret, bytes_ret, |
| 1175 | actual_type_ret, actual_format_ret, actual_size_ret, |
| 1176 | delete_p) |
| 1177 | Display *display; |
| 1178 | Window window; |
| 1179 | Atom property; |
| 1180 | unsigned char **data_ret; |
| 1181 | int *bytes_ret; |
| 1182 | Atom *actual_type_ret; |
| 1183 | int *actual_format_ret; |
| 1184 | unsigned long *actual_size_ret; |
| 1185 | int delete_p; |
| 1186 | { |
| 1187 | int total_size; |
| 1188 | unsigned long bytes_remaining; |
| 1189 | int offset = 0; |
| 1190 | unsigned char *tmp_data = 0; |
| 1191 | int result; |
| 1192 | int buffer_size = SELECTION_QUANTUM (display); |
| 1193 | if (buffer_size > MAX_SELECTION_QUANTUM) buffer_size = MAX_SELECTION_QUANTUM; |
| 1194 | |
| 1195 | BLOCK_INPUT; |
| 1196 | /* First probe the thing to find out how big it is. */ |
| 1197 | result = XGetWindowProperty (display, window, property, |
| 1198 | 0L, 0L, False, AnyPropertyType, |
| 1199 | actual_type_ret, actual_format_ret, |
| 1200 | actual_size_ret, |
| 1201 | &bytes_remaining, &tmp_data); |
| 1202 | if (result != Success) |
| 1203 | { |
| 1204 | UNBLOCK_INPUT; |
| 1205 | *data_ret = 0; |
| 1206 | *bytes_ret = 0; |
| 1207 | return; |
| 1208 | } |
| 1209 | /* This was allocated by Xlib, so use XFree. */ |
| 1210 | XFree ((char *) tmp_data); |
| 1211 | |
| 1212 | if (*actual_type_ret == None || *actual_format_ret == 0) |
| 1213 | { |
| 1214 | UNBLOCK_INPUT; |
| 1215 | return; |
| 1216 | } |
| 1217 | |
| 1218 | total_size = bytes_remaining + 1; |
| 1219 | *data_ret = (unsigned char *) xmalloc (total_size); |
| 1220 | |
| 1221 | /* Now read, until we've gotten it all. */ |
| 1222 | while (bytes_remaining) |
| 1223 | { |
| 1224 | #if 0 |
| 1225 | int last = bytes_remaining; |
| 1226 | #endif |
| 1227 | result |
| 1228 | = XGetWindowProperty (display, window, property, |
| 1229 | (long)offset/4, (long)buffer_size/4, |
| 1230 | False, |
| 1231 | AnyPropertyType, |
| 1232 | actual_type_ret, actual_format_ret, |
| 1233 | actual_size_ret, &bytes_remaining, &tmp_data); |
| 1234 | #if 0 |
| 1235 | fprintf (stderr, "<< read %d\n", last-bytes_remaining); |
| 1236 | #endif |
| 1237 | /* If this doesn't return Success at this point, it means that |
| 1238 | some clod deleted the selection while we were in the midst of |
| 1239 | reading it. Deal with that, I guess.... |
| 1240 | */ |
| 1241 | if (result != Success) break; |
| 1242 | *actual_size_ret *= *actual_format_ret / 8; |
| 1243 | bcopy (tmp_data, (*data_ret) + offset, *actual_size_ret); |
| 1244 | offset += *actual_size_ret; |
| 1245 | /* This was allocated by Xlib, so use XFree. */ |
| 1246 | XFree ((char *) tmp_data); |
| 1247 | } |
| 1248 | |
| 1249 | XFlush (display); |
| 1250 | UNBLOCK_INPUT; |
| 1251 | *bytes_ret = offset; |
| 1252 | } |
| 1253 | \f |
| 1254 | /* Use free, not XFree, to free the data obtained with this function. */ |
| 1255 | |
| 1256 | static void |
| 1257 | receive_incremental_selection (display, window, property, target_type, |
| 1258 | min_size_bytes, data_ret, size_bytes_ret, |
| 1259 | type_ret, format_ret, size_ret) |
| 1260 | Display *display; |
| 1261 | Window window; |
| 1262 | Atom property; |
| 1263 | Lisp_Object target_type; /* for error messages only */ |
| 1264 | unsigned int min_size_bytes; |
| 1265 | unsigned char **data_ret; |
| 1266 | int *size_bytes_ret; |
| 1267 | Atom *type_ret; |
| 1268 | unsigned long *size_ret; |
| 1269 | int *format_ret; |
| 1270 | { |
| 1271 | int offset = 0; |
| 1272 | struct prop_location *wait_object; |
| 1273 | *size_bytes_ret = min_size_bytes; |
| 1274 | *data_ret = (unsigned char *) xmalloc (*size_bytes_ret); |
| 1275 | #if 0 |
| 1276 | fprintf (stderr, "\nread INCR %d\n", min_size_bytes); |
| 1277 | #endif |
| 1278 | |
| 1279 | /* At this point, we have read an INCR property. |
| 1280 | Delete the property to ack it. |
| 1281 | (But first, prepare to receive the next event in this handshake.) |
| 1282 | |
| 1283 | Now, we must loop, waiting for the sending window to put a value on |
| 1284 | that property, then reading the property, then deleting it to ack. |
| 1285 | We are done when the sender places a property of length 0. |
| 1286 | */ |
| 1287 | BLOCK_INPUT; |
| 1288 | XSelectInput (display, window, STANDARD_EVENT_SET | PropertyChangeMask); |
| 1289 | XDeleteProperty (display, window, property); |
| 1290 | wait_object = expect_property_change (display, window, property, |
| 1291 | PropertyNewValue); |
| 1292 | XFlush (display); |
| 1293 | UNBLOCK_INPUT; |
| 1294 | |
| 1295 | while (1) |
| 1296 | { |
| 1297 | unsigned char *tmp_data; |
| 1298 | int tmp_size_bytes; |
| 1299 | wait_for_property_change (wait_object); |
| 1300 | /* expect it again immediately, because x_get_window_property may |
| 1301 | .. no it won't, I don't get it. |
| 1302 | .. Ok, I get it now, the Xt code that implements INCR is broken. |
| 1303 | */ |
| 1304 | x_get_window_property (display, window, property, |
| 1305 | &tmp_data, &tmp_size_bytes, |
| 1306 | type_ret, format_ret, size_ret, 1); |
| 1307 | |
| 1308 | if (tmp_size_bytes == 0) /* we're done */ |
| 1309 | { |
| 1310 | #if 0 |
| 1311 | fprintf (stderr, " read INCR done\n"); |
| 1312 | #endif |
| 1313 | if (! waiting_for_other_props_on_window (display, window)) |
| 1314 | XSelectInput (display, window, STANDARD_EVENT_SET); |
| 1315 | unexpect_property_change (wait_object); |
| 1316 | /* Use free, not XFree, because x_get_window_property |
| 1317 | calls xmalloc itself. */ |
| 1318 | if (tmp_data) free (tmp_data); |
| 1319 | break; |
| 1320 | } |
| 1321 | |
| 1322 | BLOCK_INPUT; |
| 1323 | XDeleteProperty (display, window, property); |
| 1324 | wait_object = expect_property_change (display, window, property, |
| 1325 | PropertyNewValue); |
| 1326 | XFlush (display); |
| 1327 | UNBLOCK_INPUT; |
| 1328 | |
| 1329 | #if 0 |
| 1330 | fprintf (stderr, " read INCR %d\n", tmp_size_bytes); |
| 1331 | #endif |
| 1332 | if (*size_bytes_ret < offset + tmp_size_bytes) |
| 1333 | { |
| 1334 | #if 0 |
| 1335 | fprintf (stderr, " read INCR realloc %d -> %d\n", |
| 1336 | *size_bytes_ret, offset + tmp_size_bytes); |
| 1337 | #endif |
| 1338 | *size_bytes_ret = offset + tmp_size_bytes; |
| 1339 | *data_ret = (unsigned char *) xrealloc (*data_ret, *size_bytes_ret); |
| 1340 | } |
| 1341 | bcopy (tmp_data, (*data_ret) + offset, tmp_size_bytes); |
| 1342 | offset += tmp_size_bytes; |
| 1343 | /* Use free, not XFree, because x_get_window_property |
| 1344 | calls xmalloc itself. */ |
| 1345 | free (tmp_data); |
| 1346 | } |
| 1347 | } |
| 1348 | \f |
| 1349 | /* Once a requested selection is "ready" (we got a SelectionNotify event), |
| 1350 | fetch value from property PROPERTY of X window WINDOW on display DISPLAY. |
| 1351 | TARGET_TYPE and SELECTION_ATOM are used in error message if this fails. */ |
| 1352 | |
| 1353 | static Lisp_Object |
| 1354 | x_get_window_property_as_lisp_data (display, window, property, target_type, |
| 1355 | selection_atom) |
| 1356 | Display *display; |
| 1357 | Window window; |
| 1358 | Atom property; |
| 1359 | Lisp_Object target_type; /* for error messages only */ |
| 1360 | Atom selection_atom; /* for error messages only */ |
| 1361 | { |
| 1362 | Atom actual_type; |
| 1363 | int actual_format; |
| 1364 | unsigned long actual_size; |
| 1365 | unsigned char *data = 0; |
| 1366 | int bytes = 0; |
| 1367 | Lisp_Object val; |
| 1368 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
| 1369 | |
| 1370 | x_get_window_property (display, window, property, &data, &bytes, |
| 1371 | &actual_type, &actual_format, &actual_size, 1); |
| 1372 | if (! data) |
| 1373 | { |
| 1374 | int there_is_a_selection_owner; |
| 1375 | BLOCK_INPUT; |
| 1376 | there_is_a_selection_owner |
| 1377 | = XGetSelectionOwner (display, selection_atom); |
| 1378 | UNBLOCK_INPUT; |
| 1379 | Fsignal (Qerror, |
| 1380 | there_is_a_selection_owner |
| 1381 | ? Fcons (build_string ("selection owner couldn't convert"), |
| 1382 | actual_type |
| 1383 | ? Fcons (target_type, |
| 1384 | Fcons (x_atom_to_symbol (dpyinfo, display, |
| 1385 | actual_type), |
| 1386 | Qnil)) |
| 1387 | : Fcons (target_type, Qnil)) |
| 1388 | : Fcons (build_string ("no selection"), |
| 1389 | Fcons (x_atom_to_symbol (dpyinfo, display, |
| 1390 | selection_atom), |
| 1391 | Qnil))); |
| 1392 | } |
| 1393 | |
| 1394 | if (actual_type == dpyinfo->Xatom_INCR) |
| 1395 | { |
| 1396 | /* That wasn't really the data, just the beginning. */ |
| 1397 | |
| 1398 | unsigned int min_size_bytes = * ((unsigned int *) data); |
| 1399 | BLOCK_INPUT; |
| 1400 | /* Use free, not XFree, because x_get_window_property |
| 1401 | calls xmalloc itself. */ |
| 1402 | free ((char *) data); |
| 1403 | UNBLOCK_INPUT; |
| 1404 | receive_incremental_selection (display, window, property, target_type, |
| 1405 | min_size_bytes, &data, &bytes, |
| 1406 | &actual_type, &actual_format, |
| 1407 | &actual_size); |
| 1408 | } |
| 1409 | |
| 1410 | BLOCK_INPUT; |
| 1411 | XDeleteProperty (display, window, property); |
| 1412 | XFlush (display); |
| 1413 | UNBLOCK_INPUT; |
| 1414 | |
| 1415 | /* It's been read. Now convert it to a lisp object in some semi-rational |
| 1416 | manner. */ |
| 1417 | val = selection_data_to_lisp_data (display, data, bytes, |
| 1418 | actual_type, actual_format); |
| 1419 | |
| 1420 | /* Use free, not XFree, because x_get_window_property |
| 1421 | calls xmalloc itself. */ |
| 1422 | free ((char *) data); |
| 1423 | return val; |
| 1424 | } |
| 1425 | \f |
| 1426 | /* These functions convert from the selection data read from the server into |
| 1427 | something that we can use from Lisp, and vice versa. |
| 1428 | |
| 1429 | Type: Format: Size: Lisp Type: |
| 1430 | ----- ------- ----- ----------- |
| 1431 | * 8 * String |
| 1432 | ATOM 32 1 Symbol |
| 1433 | ATOM 32 > 1 Vector of Symbols |
| 1434 | * 16 1 Integer |
| 1435 | * 16 > 1 Vector of Integers |
| 1436 | * 32 1 if <=16 bits: Integer |
| 1437 | if > 16 bits: Cons of top16, bot16 |
| 1438 | * 32 > 1 Vector of the above |
| 1439 | |
| 1440 | When converting a Lisp number to C, it is assumed to be of format 16 if |
| 1441 | it is an integer, and of format 32 if it is a cons of two integers. |
| 1442 | |
| 1443 | When converting a vector of numbers from Lisp to C, it is assumed to be |
| 1444 | of format 16 if every element in the vector is an integer, and is assumed |
| 1445 | to be of format 32 if any element is a cons of two integers. |
| 1446 | |
| 1447 | When converting an object to C, it may be of the form (SYMBOL . <data>) |
| 1448 | where SYMBOL is what we should claim that the type is. Format and |
| 1449 | representation are as above. */ |
| 1450 | |
| 1451 | |
| 1452 | |
| 1453 | static Lisp_Object |
| 1454 | selection_data_to_lisp_data (display, data, size, type, format) |
| 1455 | Display *display; |
| 1456 | unsigned char *data; |
| 1457 | Atom type; |
| 1458 | int size, format; |
| 1459 | { |
| 1460 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
| 1461 | |
| 1462 | if (type == dpyinfo->Xatom_NULL) |
| 1463 | return QNULL; |
| 1464 | |
| 1465 | /* Convert any 8-bit data to a string, for compactness. */ |
| 1466 | else if (format == 8) |
| 1467 | { |
| 1468 | Lisp_Object str; |
| 1469 | int require_encoding = 0; |
| 1470 | |
| 1471 | /* If TYPE is `TEXT' or `COMPOUND_TEXT', we should decode DATA |
| 1472 | to Emacs internal format because DATA may be encoded in |
| 1473 | compound text format. In addtion, if TYPE is `STRING' and |
| 1474 | DATA contains any 8-bit Latin-1 code, we should also decode |
| 1475 | it. */ |
| 1476 | if (type == dpyinfo->Xatom_TEXT || type == dpyinfo->Xatom_COMPOUND_TEXT) |
| 1477 | require_encoding = 1; |
| 1478 | else if (type == XA_STRING) |
| 1479 | { |
| 1480 | int i; |
| 1481 | for (i = 0; i < size; i++) |
| 1482 | { |
| 1483 | if (data[i] >= 0x80) |
| 1484 | { |
| 1485 | require_encoding = 1; |
| 1486 | break; |
| 1487 | } |
| 1488 | } |
| 1489 | } |
| 1490 | if (!require_encoding) |
| 1491 | str = make_string ((char *) data, size); |
| 1492 | else |
| 1493 | { |
| 1494 | int bufsize, dummy; |
| 1495 | unsigned char *buf; |
| 1496 | struct coding_system coding; |
| 1497 | |
| 1498 | setup_coding_system |
| 1499 | (Fcheck_coding_system(Vclipboard_coding_system), &coding); |
| 1500 | coding.last_block = 1; |
| 1501 | bufsize = decoding_buffer_size (&coding, size); |
| 1502 | buf = (unsigned char *) xmalloc (bufsize); |
| 1503 | size = decode_coding (&coding, data, buf, size, bufsize, &dummy); |
| 1504 | str = make_string ((char *) buf, size); |
| 1505 | free (buf); |
| 1506 | } |
| 1507 | return str; |
| 1508 | } |
| 1509 | /* Convert a single atom to a Lisp_Symbol. Convert a set of atoms to |
| 1510 | a vector of symbols. |
| 1511 | */ |
| 1512 | else if (type == XA_ATOM) |
| 1513 | { |
| 1514 | int i; |
| 1515 | if (size == sizeof (Atom)) |
| 1516 | return x_atom_to_symbol (dpyinfo, display, *((Atom *) data)); |
| 1517 | else |
| 1518 | { |
| 1519 | Lisp_Object v = Fmake_vector (make_number (size / sizeof (Atom)), |
| 1520 | make_number (0)); |
| 1521 | for (i = 0; i < size / sizeof (Atom); i++) |
| 1522 | Faset (v, make_number (i), |
| 1523 | x_atom_to_symbol (dpyinfo, display, ((Atom *) data) [i])); |
| 1524 | return v; |
| 1525 | } |
| 1526 | } |
| 1527 | |
| 1528 | /* Convert a single 16 or small 32 bit number to a Lisp_Int. |
| 1529 | If the number is > 16 bits, convert it to a cons of integers, |
| 1530 | 16 bits in each half. |
| 1531 | */ |
| 1532 | else if (format == 32 && size == sizeof (long)) |
| 1533 | return long_to_cons (((unsigned long *) data) [0]); |
| 1534 | else if (format == 16 && size == sizeof (short)) |
| 1535 | return make_number ((int) (((unsigned short *) data) [0])); |
| 1536 | |
| 1537 | /* Convert any other kind of data to a vector of numbers, represented |
| 1538 | as above (as an integer, or a cons of two 16 bit integers.) |
| 1539 | */ |
| 1540 | else if (format == 16) |
| 1541 | { |
| 1542 | int i; |
| 1543 | Lisp_Object v; |
| 1544 | v = Fmake_vector (make_number (size / 2), make_number (0)); |
| 1545 | for (i = 0; i < size / 2; i++) |
| 1546 | { |
| 1547 | int j = (int) ((unsigned short *) data) [i]; |
| 1548 | Faset (v, make_number (i), make_number (j)); |
| 1549 | } |
| 1550 | return v; |
| 1551 | } |
| 1552 | else |
| 1553 | { |
| 1554 | int i; |
| 1555 | Lisp_Object v = Fmake_vector (make_number (size / 4), make_number (0)); |
| 1556 | for (i = 0; i < size / 4; i++) |
| 1557 | { |
| 1558 | unsigned long j = ((unsigned long *) data) [i]; |
| 1559 | Faset (v, make_number (i), long_to_cons (j)); |
| 1560 | } |
| 1561 | return v; |
| 1562 | } |
| 1563 | } |
| 1564 | |
| 1565 | |
| 1566 | /* Use free, not XFree, to free the data obtained with this function. */ |
| 1567 | |
| 1568 | static void |
| 1569 | lisp_data_to_selection_data (display, obj, |
| 1570 | data_ret, type_ret, size_ret, |
| 1571 | format_ret, nofree_ret) |
| 1572 | Display *display; |
| 1573 | Lisp_Object obj; |
| 1574 | unsigned char **data_ret; |
| 1575 | Atom *type_ret; |
| 1576 | unsigned int *size_ret; |
| 1577 | int *format_ret; |
| 1578 | int *nofree_ret; |
| 1579 | { |
| 1580 | Lisp_Object type = Qnil; |
| 1581 | struct x_display_info *dpyinfo = x_display_info_for_display (display); |
| 1582 | |
| 1583 | *nofree_ret = 0; |
| 1584 | |
| 1585 | if (CONSP (obj) && SYMBOLP (XCONS (obj)->car)) |
| 1586 | { |
| 1587 | type = XCONS (obj)->car; |
| 1588 | obj = XCONS (obj)->cdr; |
| 1589 | if (CONSP (obj) && NILP (XCONS (obj)->cdr)) |
| 1590 | obj = XCONS (obj)->car; |
| 1591 | } |
| 1592 | |
| 1593 | if (EQ (obj, QNULL) || (EQ (type, QNULL))) |
| 1594 | { /* This is not the same as declining */ |
| 1595 | *format_ret = 32; |
| 1596 | *size_ret = 0; |
| 1597 | *data_ret = 0; |
| 1598 | type = QNULL; |
| 1599 | } |
| 1600 | else if (STRINGP (obj)) |
| 1601 | { |
| 1602 | /* Since we are now handling multilingual text, we must consider |
| 1603 | sending back compound text. */ |
| 1604 | int charsets[MAX_CHARSET + 1]; |
| 1605 | int num; |
| 1606 | |
| 1607 | *format_ret = 8; |
| 1608 | *size_ret = XSTRING (obj)->size; |
| 1609 | *data_ret = XSTRING (obj)->data; |
| 1610 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
| 1611 | num = ((*size_ret <= 1) /* Check the possibility of short cut. */ |
| 1612 | ? 0 |
| 1613 | : find_charset_in_str (*data_ret, *size_ret, charsets, Qnil)); |
| 1614 | |
| 1615 | if (!num || (num == 1 && charsets[CHARSET_ASCII])) |
| 1616 | { |
| 1617 | /* No multibyte character in OBJ. We need not encode it. */ |
| 1618 | *nofree_ret = 1; |
| 1619 | if (NILP (type)) type = QSTRING; |
| 1620 | } |
| 1621 | else |
| 1622 | { |
| 1623 | /* We must encode contents of OBJ to compound text format. |
| 1624 | The format is compatible with what the target `STRING' |
| 1625 | expects if OBJ contains only ASCII and Latin-1 |
| 1626 | characters. */ |
| 1627 | int bufsize, dummy; |
| 1628 | unsigned char *buf; |
| 1629 | struct coding_system coding; |
| 1630 | |
| 1631 | setup_coding_system |
| 1632 | (Fcheck_coding_system (Vclipboard_coding_system), &coding); |
| 1633 | coding.last_block = 1; |
| 1634 | bufsize = encoding_buffer_size (&coding, *size_ret); |
| 1635 | buf = (unsigned char *) xmalloc (bufsize); |
| 1636 | *size_ret = encode_coding (&coding, *data_ret, buf, |
| 1637 | *size_ret, bufsize, &dummy); |
| 1638 | *data_ret = buf; |
| 1639 | if (charsets[get_charset_id(charset_latin_iso8859_1)] |
| 1640 | && (num == 1 || (num == 2 && charsets[CHARSET_ASCII]))) |
| 1641 | { |
| 1642 | /* Ok, we can return it as `STRING'. */ |
| 1643 | if (NILP (type)) type = QSTRING; |
| 1644 | } |
| 1645 | else |
| 1646 | { |
| 1647 | /* We must return it as `COMPOUND_TEXT'. */ |
| 1648 | if (NILP (type)) type = QCOMPOUND_TEXT; |
| 1649 | } |
| 1650 | } |
| 1651 | } |
| 1652 | else if (SYMBOLP (obj)) |
| 1653 | { |
| 1654 | *format_ret = 32; |
| 1655 | *size_ret = 1; |
| 1656 | *data_ret = (unsigned char *) xmalloc (sizeof (Atom) + 1); |
| 1657 | (*data_ret) [sizeof (Atom)] = 0; |
| 1658 | (*(Atom **) data_ret) [0] = symbol_to_x_atom (dpyinfo, display, obj); |
| 1659 | if (NILP (type)) type = QATOM; |
| 1660 | } |
| 1661 | else if (INTEGERP (obj) |
| 1662 | && XINT (obj) < 0xFFFF |
| 1663 | && XINT (obj) > -0xFFFF) |
| 1664 | { |
| 1665 | *format_ret = 16; |
| 1666 | *size_ret = 1; |
| 1667 | *data_ret = (unsigned char *) xmalloc (sizeof (short) + 1); |
| 1668 | (*data_ret) [sizeof (short)] = 0; |
| 1669 | (*(short **) data_ret) [0] = (short) XINT (obj); |
| 1670 | if (NILP (type)) type = QINTEGER; |
| 1671 | } |
| 1672 | else if (INTEGERP (obj) |
| 1673 | || (CONSP (obj) && INTEGERP (XCONS (obj)->car) |
| 1674 | && (INTEGERP (XCONS (obj)->cdr) |
| 1675 | || (CONSP (XCONS (obj)->cdr) |
| 1676 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car))))) |
| 1677 | { |
| 1678 | *format_ret = 32; |
| 1679 | *size_ret = 1; |
| 1680 | *data_ret = (unsigned char *) xmalloc (sizeof (long) + 1); |
| 1681 | (*data_ret) [sizeof (long)] = 0; |
| 1682 | (*(unsigned long **) data_ret) [0] = cons_to_long (obj); |
| 1683 | if (NILP (type)) type = QINTEGER; |
| 1684 | } |
| 1685 | else if (VECTORP (obj)) |
| 1686 | { |
| 1687 | /* Lisp_Vectors may represent a set of ATOMs; |
| 1688 | a set of 16 or 32 bit INTEGERs; |
| 1689 | or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...] |
| 1690 | */ |
| 1691 | int i; |
| 1692 | |
| 1693 | if (SYMBOLP (XVECTOR (obj)->contents [0])) |
| 1694 | /* This vector is an ATOM set */ |
| 1695 | { |
| 1696 | if (NILP (type)) type = QATOM; |
| 1697 | *size_ret = XVECTOR (obj)->size; |
| 1698 | *format_ret = 32; |
| 1699 | *data_ret = (unsigned char *) xmalloc ((*size_ret) * sizeof (Atom)); |
| 1700 | for (i = 0; i < *size_ret; i++) |
| 1701 | if (SYMBOLP (XVECTOR (obj)->contents [i])) |
| 1702 | (*(Atom **) data_ret) [i] |
| 1703 | = symbol_to_x_atom (dpyinfo, display, XVECTOR (obj)->contents [i]); |
| 1704 | else |
| 1705 | Fsignal (Qerror, /* Qselection_error */ |
| 1706 | Fcons (build_string |
| 1707 | ("all elements of selection vector must have same type"), |
| 1708 | Fcons (obj, Qnil))); |
| 1709 | } |
| 1710 | #if 0 /* #### MULTIPLE doesn't work yet */ |
| 1711 | else if (VECTORP (XVECTOR (obj)->contents [0])) |
| 1712 | /* This vector is an ATOM_PAIR set */ |
| 1713 | { |
| 1714 | if (NILP (type)) type = QATOM_PAIR; |
| 1715 | *size_ret = XVECTOR (obj)->size; |
| 1716 | *format_ret = 32; |
| 1717 | *data_ret = (unsigned char *) |
| 1718 | xmalloc ((*size_ret) * sizeof (Atom) * 2); |
| 1719 | for (i = 0; i < *size_ret; i++) |
| 1720 | if (VECTORP (XVECTOR (obj)->contents [i])) |
| 1721 | { |
| 1722 | Lisp_Object pair = XVECTOR (obj)->contents [i]; |
| 1723 | if (XVECTOR (pair)->size != 2) |
| 1724 | Fsignal (Qerror, |
| 1725 | Fcons (build_string |
| 1726 | ("elements of the vector must be vectors of exactly two elements"), |
| 1727 | Fcons (pair, Qnil))); |
| 1728 | |
| 1729 | (*(Atom **) data_ret) [i * 2] |
| 1730 | = symbol_to_x_atom (dpyinfo, display, |
| 1731 | XVECTOR (pair)->contents [0]); |
| 1732 | (*(Atom **) data_ret) [(i * 2) + 1] |
| 1733 | = symbol_to_x_atom (dpyinfo, display, |
| 1734 | XVECTOR (pair)->contents [1]); |
| 1735 | } |
| 1736 | else |
| 1737 | Fsignal (Qerror, |
| 1738 | Fcons (build_string |
| 1739 | ("all elements of the vector must be of the same type"), |
| 1740 | Fcons (obj, Qnil))); |
| 1741 | |
| 1742 | } |
| 1743 | #endif |
| 1744 | else |
| 1745 | /* This vector is an INTEGER set, or something like it */ |
| 1746 | { |
| 1747 | *size_ret = XVECTOR (obj)->size; |
| 1748 | if (NILP (type)) type = QINTEGER; |
| 1749 | *format_ret = 16; |
| 1750 | for (i = 0; i < *size_ret; i++) |
| 1751 | if (CONSP (XVECTOR (obj)->contents [i])) |
| 1752 | *format_ret = 32; |
| 1753 | else if (!INTEGERP (XVECTOR (obj)->contents [i])) |
| 1754 | Fsignal (Qerror, /* Qselection_error */ |
| 1755 | Fcons (build_string |
| 1756 | ("elements of selection vector must be integers or conses of integers"), |
| 1757 | Fcons (obj, Qnil))); |
| 1758 | |
| 1759 | *data_ret = (unsigned char *) xmalloc (*size_ret * (*format_ret/8)); |
| 1760 | for (i = 0; i < *size_ret; i++) |
| 1761 | if (*format_ret == 32) |
| 1762 | (*((unsigned long **) data_ret)) [i] |
| 1763 | = cons_to_long (XVECTOR (obj)->contents [i]); |
| 1764 | else |
| 1765 | (*((unsigned short **) data_ret)) [i] |
| 1766 | = (unsigned short) cons_to_long (XVECTOR (obj)->contents [i]); |
| 1767 | } |
| 1768 | } |
| 1769 | else |
| 1770 | Fsignal (Qerror, /* Qselection_error */ |
| 1771 | Fcons (build_string ("unrecognised selection data"), |
| 1772 | Fcons (obj, Qnil))); |
| 1773 | |
| 1774 | *type_ret = symbol_to_x_atom (dpyinfo, display, type); |
| 1775 | } |
| 1776 | |
| 1777 | static Lisp_Object |
| 1778 | clean_local_selection_data (obj) |
| 1779 | Lisp_Object obj; |
| 1780 | { |
| 1781 | if (CONSP (obj) |
| 1782 | && INTEGERP (XCONS (obj)->car) |
| 1783 | && CONSP (XCONS (obj)->cdr) |
| 1784 | && INTEGERP (XCONS (XCONS (obj)->cdr)->car) |
| 1785 | && NILP (XCONS (XCONS (obj)->cdr)->cdr)) |
| 1786 | obj = Fcons (XCONS (obj)->car, XCONS (obj)->cdr); |
| 1787 | |
| 1788 | if (CONSP (obj) |
| 1789 | && INTEGERP (XCONS (obj)->car) |
| 1790 | && INTEGERP (XCONS (obj)->cdr)) |
| 1791 | { |
| 1792 | if (XINT (XCONS (obj)->car) == 0) |
| 1793 | return XCONS (obj)->cdr; |
| 1794 | if (XINT (XCONS (obj)->car) == -1) |
| 1795 | return make_number (- XINT (XCONS (obj)->cdr)); |
| 1796 | } |
| 1797 | if (VECTORP (obj)) |
| 1798 | { |
| 1799 | int i; |
| 1800 | int size = XVECTOR (obj)->size; |
| 1801 | Lisp_Object copy; |
| 1802 | if (size == 1) |
| 1803 | return clean_local_selection_data (XVECTOR (obj)->contents [0]); |
| 1804 | copy = Fmake_vector (make_number (size), Qnil); |
| 1805 | for (i = 0; i < size; i++) |
| 1806 | XVECTOR (copy)->contents [i] |
| 1807 | = clean_local_selection_data (XVECTOR (obj)->contents [i]); |
| 1808 | return copy; |
| 1809 | } |
| 1810 | return obj; |
| 1811 | } |
| 1812 | \f |
| 1813 | /* Called from XTread_socket to handle SelectionNotify events. |
| 1814 | If it's the selection we are waiting for, stop waiting |
| 1815 | by setting the car of reading_selection_reply to non-nil. |
| 1816 | We store t there if the reply is successful, lambda if not. */ |
| 1817 | |
| 1818 | void |
| 1819 | x_handle_selection_notify (event) |
| 1820 | XSelectionEvent *event; |
| 1821 | { |
| 1822 | if (event->requestor != reading_selection_window) |
| 1823 | return; |
| 1824 | if (event->selection != reading_which_selection) |
| 1825 | return; |
| 1826 | |
| 1827 | XCONS (reading_selection_reply)->car |
| 1828 | = (event->property != 0 ? Qt : Qlambda); |
| 1829 | } |
| 1830 | |
| 1831 | \f |
| 1832 | DEFUN ("x-own-selection-internal", Fx_own_selection_internal, |
| 1833 | Sx_own_selection_internal, 2, 2, 0, |
| 1834 | "Assert an X selection of the given TYPE with the given VALUE.\n\ |
| 1835 | TYPE is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ |
| 1836 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ |
| 1837 | VALUE is typically a string, or a cons of two markers, but may be\n\ |
| 1838 | anything that the functions on `selection-converter-alist' know about.") |
| 1839 | (selection_name, selection_value) |
| 1840 | Lisp_Object selection_name, selection_value; |
| 1841 | { |
| 1842 | check_x (); |
| 1843 | CHECK_SYMBOL (selection_name, 0); |
| 1844 | if (NILP (selection_value)) error ("selection-value may not be nil"); |
| 1845 | x_own_selection (selection_name, selection_value); |
| 1846 | return selection_value; |
| 1847 | } |
| 1848 | |
| 1849 | |
| 1850 | /* Request the selection value from the owner. If we are the owner, |
| 1851 | simply return our selection value. If we are not the owner, this |
| 1852 | will block until all of the data has arrived. */ |
| 1853 | |
| 1854 | DEFUN ("x-get-selection-internal", Fx_get_selection_internal, |
| 1855 | Sx_get_selection_internal, 2, 2, 0, |
| 1856 | "Return text selected from some X window.\n\ |
| 1857 | SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ |
| 1858 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ |
| 1859 | TYPE is the type of data desired, typically `STRING'.") |
| 1860 | (selection_symbol, target_type) |
| 1861 | Lisp_Object selection_symbol, target_type; |
| 1862 | { |
| 1863 | Lisp_Object val = Qnil; |
| 1864 | struct gcpro gcpro1, gcpro2; |
| 1865 | GCPRO2 (target_type, val); /* we store newly consed data into these */ |
| 1866 | check_x (); |
| 1867 | CHECK_SYMBOL (selection_symbol, 0); |
| 1868 | |
| 1869 | #if 0 /* #### MULTIPLE doesn't work yet */ |
| 1870 | if (CONSP (target_type) |
| 1871 | && XCONS (target_type)->car == QMULTIPLE) |
| 1872 | { |
| 1873 | CHECK_VECTOR (XCONS (target_type)->cdr, 0); |
| 1874 | /* So we don't destructively modify this... */ |
| 1875 | target_type = copy_multiple_data (target_type); |
| 1876 | } |
| 1877 | else |
| 1878 | #endif |
| 1879 | CHECK_SYMBOL (target_type, 0); |
| 1880 | |
| 1881 | val = x_get_local_selection (selection_symbol, target_type); |
| 1882 | |
| 1883 | if (NILP (val)) |
| 1884 | { |
| 1885 | val = x_get_foreign_selection (selection_symbol, target_type); |
| 1886 | goto DONE; |
| 1887 | } |
| 1888 | |
| 1889 | if (CONSP (val) |
| 1890 | && SYMBOLP (XCONS (val)->car)) |
| 1891 | { |
| 1892 | val = XCONS (val)->cdr; |
| 1893 | if (CONSP (val) && NILP (XCONS (val)->cdr)) |
| 1894 | val = XCONS (val)->car; |
| 1895 | } |
| 1896 | val = clean_local_selection_data (val); |
| 1897 | DONE: |
| 1898 | UNGCPRO; |
| 1899 | return val; |
| 1900 | } |
| 1901 | |
| 1902 | DEFUN ("x-disown-selection-internal", Fx_disown_selection_internal, |
| 1903 | Sx_disown_selection_internal, 1, 2, 0, |
| 1904 | "If we own the selection SELECTION, disown it.\n\ |
| 1905 | Disowning it means there is no such selection.") |
| 1906 | (selection, time) |
| 1907 | Lisp_Object selection; |
| 1908 | Lisp_Object time; |
| 1909 | { |
| 1910 | Time timestamp; |
| 1911 | Atom selection_atom; |
| 1912 | XSelectionClearEvent event; |
| 1913 | Display *display; |
| 1914 | struct x_display_info *dpyinfo; |
| 1915 | |
| 1916 | check_x (); |
| 1917 | display = FRAME_X_DISPLAY (selected_frame); |
| 1918 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
| 1919 | CHECK_SYMBOL (selection, 0); |
| 1920 | if (NILP (time)) |
| 1921 | timestamp = last_event_timestamp; |
| 1922 | else |
| 1923 | timestamp = cons_to_long (time); |
| 1924 | |
| 1925 | if (NILP (assq_no_quit (selection, Vselection_alist))) |
| 1926 | return Qnil; /* Don't disown the selection when we're not the owner. */ |
| 1927 | |
| 1928 | selection_atom = symbol_to_x_atom (dpyinfo, display, selection); |
| 1929 | |
| 1930 | BLOCK_INPUT; |
| 1931 | XSetSelectionOwner (display, selection_atom, None, timestamp); |
| 1932 | UNBLOCK_INPUT; |
| 1933 | |
| 1934 | /* It doesn't seem to be guaranteed that a SelectionClear event will be |
| 1935 | generated for a window which owns the selection when that window sets |
| 1936 | the selection owner to None. The NCD server does, the MIT Sun4 server |
| 1937 | doesn't. So we synthesize one; this means we might get two, but |
| 1938 | that's ok, because the second one won't have any effect. */ |
| 1939 | SELECTION_EVENT_DISPLAY (&event) = display; |
| 1940 | SELECTION_EVENT_SELECTION (&event) = selection_atom; |
| 1941 | SELECTION_EVENT_TIME (&event) = timestamp; |
| 1942 | x_handle_selection_clear (&event); |
| 1943 | |
| 1944 | return Qt; |
| 1945 | } |
| 1946 | |
| 1947 | /* Get rid of all the selections in buffer BUFFER. |
| 1948 | This is used when we kill a buffer. */ |
| 1949 | |
| 1950 | void |
| 1951 | x_disown_buffer_selections (buffer) |
| 1952 | Lisp_Object buffer; |
| 1953 | { |
| 1954 | Lisp_Object tail; |
| 1955 | struct buffer *buf = XBUFFER (buffer); |
| 1956 | |
| 1957 | for (tail = Vselection_alist; CONSP (tail); tail = XCONS (tail)->cdr) |
| 1958 | { |
| 1959 | Lisp_Object elt, value; |
| 1960 | elt = XCONS (tail)->car; |
| 1961 | value = XCONS (elt)->cdr; |
| 1962 | if (CONSP (value) && MARKERP (XCONS (value)->car) |
| 1963 | && XMARKER (XCONS (value)->car)->buffer == buf) |
| 1964 | Fx_disown_selection_internal (XCONS (elt)->car, Qnil); |
| 1965 | } |
| 1966 | } |
| 1967 | |
| 1968 | DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p, |
| 1969 | 0, 1, 0, |
| 1970 | "Whether the current Emacs process owns the given X Selection.\n\ |
| 1971 | The arg should be the name of the selection in question, typically one of\n\ |
| 1972 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ |
| 1973 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ |
| 1974 | For convenience, the symbol nil is the same as `PRIMARY',\n\ |
| 1975 | and t is the same as `SECONDARY'.)") |
| 1976 | (selection) |
| 1977 | Lisp_Object selection; |
| 1978 | { |
| 1979 | check_x (); |
| 1980 | CHECK_SYMBOL (selection, 0); |
| 1981 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
| 1982 | if (EQ (selection, Qt)) selection = QSECONDARY; |
| 1983 | |
| 1984 | if (NILP (Fassq (selection, Vselection_alist))) |
| 1985 | return Qnil; |
| 1986 | return Qt; |
| 1987 | } |
| 1988 | |
| 1989 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, |
| 1990 | 0, 1, 0, |
| 1991 | "Whether there is an owner for the given X Selection.\n\ |
| 1992 | The arg should be the name of the selection in question, typically one of\n\ |
| 1993 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ |
| 1994 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ |
| 1995 | For convenience, the symbol nil is the same as `PRIMARY',\n\ |
| 1996 | and t is the same as `SECONDARY'.)") |
| 1997 | (selection) |
| 1998 | Lisp_Object selection; |
| 1999 | { |
| 2000 | Window owner; |
| 2001 | Atom atom; |
| 2002 | Display *dpy; |
| 2003 | |
| 2004 | /* It should be safe to call this before we have an X frame. */ |
| 2005 | if (! FRAME_X_P (selected_frame)) |
| 2006 | return Qnil; |
| 2007 | |
| 2008 | dpy = FRAME_X_DISPLAY (selected_frame); |
| 2009 | CHECK_SYMBOL (selection, 0); |
| 2010 | if (!NILP (Fx_selection_owner_p (selection))) |
| 2011 | return Qt; |
| 2012 | if (EQ (selection, Qnil)) selection = QPRIMARY; |
| 2013 | if (EQ (selection, Qt)) selection = QSECONDARY; |
| 2014 | atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
| 2015 | dpy, selection); |
| 2016 | if (atom == 0) |
| 2017 | return Qnil; |
| 2018 | BLOCK_INPUT; |
| 2019 | owner = XGetSelectionOwner (dpy, atom); |
| 2020 | UNBLOCK_INPUT; |
| 2021 | return (owner ? Qt : Qnil); |
| 2022 | } |
| 2023 | |
| 2024 | \f |
| 2025 | #ifdef CUT_BUFFER_SUPPORT |
| 2026 | |
| 2027 | /* Ensure that all 8 cut buffers exist. ICCCM says we gotta... */ |
| 2028 | static void |
| 2029 | initialize_cut_buffers (display, window) |
| 2030 | Display *display; |
| 2031 | Window window; |
| 2032 | { |
| 2033 | unsigned char *data = (unsigned char *) ""; |
| 2034 | BLOCK_INPUT; |
| 2035 | #define FROB(atom) XChangeProperty (display, window, atom, XA_STRING, 8, \ |
| 2036 | PropModeAppend, data, 0) |
| 2037 | FROB (XA_CUT_BUFFER0); |
| 2038 | FROB (XA_CUT_BUFFER1); |
| 2039 | FROB (XA_CUT_BUFFER2); |
| 2040 | FROB (XA_CUT_BUFFER3); |
| 2041 | FROB (XA_CUT_BUFFER4); |
| 2042 | FROB (XA_CUT_BUFFER5); |
| 2043 | FROB (XA_CUT_BUFFER6); |
| 2044 | FROB (XA_CUT_BUFFER7); |
| 2045 | #undef FROB |
| 2046 | UNBLOCK_INPUT; |
| 2047 | } |
| 2048 | |
| 2049 | |
| 2050 | #define CHECK_CUT_BUFFER(symbol,n) \ |
| 2051 | { CHECK_SYMBOL ((symbol), (n)); \ |
| 2052 | if (!EQ((symbol), QCUT_BUFFER0) && !EQ((symbol), QCUT_BUFFER1) \ |
| 2053 | && !EQ((symbol), QCUT_BUFFER2) && !EQ((symbol), QCUT_BUFFER3) \ |
| 2054 | && !EQ((symbol), QCUT_BUFFER4) && !EQ((symbol), QCUT_BUFFER5) \ |
| 2055 | && !EQ((symbol), QCUT_BUFFER6) && !EQ((symbol), QCUT_BUFFER7)) \ |
| 2056 | Fsignal (Qerror, \ |
| 2057 | Fcons (build_string ("doesn't name a cut buffer"), \ |
| 2058 | Fcons ((symbol), Qnil))); \ |
| 2059 | } |
| 2060 | |
| 2061 | DEFUN ("x-get-cut-buffer-internal", Fx_get_cut_buffer_internal, |
| 2062 | Sx_get_cut_buffer_internal, 1, 1, 0, |
| 2063 | "Returns the value of the named cut buffer (typically CUT_BUFFER0).") |
| 2064 | (buffer) |
| 2065 | Lisp_Object buffer; |
| 2066 | { |
| 2067 | Window window; |
| 2068 | Atom buffer_atom; |
| 2069 | unsigned char *data; |
| 2070 | int bytes; |
| 2071 | Atom type; |
| 2072 | int format; |
| 2073 | unsigned long size; |
| 2074 | Lisp_Object ret; |
| 2075 | Display *display; |
| 2076 | struct x_display_info *dpyinfo; |
| 2077 | |
| 2078 | check_x (); |
| 2079 | display = FRAME_X_DISPLAY (selected_frame); |
| 2080 | dpyinfo = FRAME_X_DISPLAY_INFO (selected_frame); |
| 2081 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ |
| 2082 | CHECK_CUT_BUFFER (buffer, 0); |
| 2083 | buffer_atom = symbol_to_x_atom (dpyinfo, display, buffer); |
| 2084 | |
| 2085 | x_get_window_property (display, window, buffer_atom, &data, &bytes, |
| 2086 | &type, &format, &size, 0); |
| 2087 | if (!data) return Qnil; |
| 2088 | |
| 2089 | if (format != 8 || type != XA_STRING) |
| 2090 | Fsignal (Qerror, |
| 2091 | Fcons (build_string ("cut buffer doesn't contain 8-bit data"), |
| 2092 | Fcons (x_atom_to_symbol (dpyinfo, display, type), |
| 2093 | Fcons (make_number (format), Qnil)))); |
| 2094 | |
| 2095 | ret = (bytes ? make_string ((char *) data, bytes) : Qnil); |
| 2096 | /* Use free, not XFree, because x_get_window_property |
| 2097 | calls xmalloc itself. */ |
| 2098 | free (data); |
| 2099 | return ret; |
| 2100 | } |
| 2101 | |
| 2102 | |
| 2103 | DEFUN ("x-store-cut-buffer-internal", Fx_store_cut_buffer_internal, |
| 2104 | Sx_store_cut_buffer_internal, 2, 2, 0, |
| 2105 | "Sets the value of the named cut buffer (typically CUT_BUFFER0).") |
| 2106 | (buffer, string) |
| 2107 | Lisp_Object buffer, string; |
| 2108 | { |
| 2109 | Window window; |
| 2110 | Atom buffer_atom; |
| 2111 | unsigned char *data; |
| 2112 | int bytes; |
| 2113 | int bytes_remaining; |
| 2114 | int max_bytes; |
| 2115 | Display *display; |
| 2116 | |
| 2117 | check_x (); |
| 2118 | display = FRAME_X_DISPLAY (selected_frame); |
| 2119 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ |
| 2120 | |
| 2121 | max_bytes = SELECTION_QUANTUM (display); |
| 2122 | if (max_bytes > MAX_SELECTION_QUANTUM) |
| 2123 | max_bytes = MAX_SELECTION_QUANTUM; |
| 2124 | |
| 2125 | CHECK_CUT_BUFFER (buffer, 0); |
| 2126 | CHECK_STRING (string, 0); |
| 2127 | buffer_atom = symbol_to_x_atom (FRAME_X_DISPLAY_INFO (selected_frame), |
| 2128 | display, buffer); |
| 2129 | data = (unsigned char *) XSTRING (string)->data; |
| 2130 | bytes = XSTRING (string)->size; |
| 2131 | bytes_remaining = bytes; |
| 2132 | |
| 2133 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
| 2134 | { |
| 2135 | initialize_cut_buffers (display, window); |
| 2136 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; |
| 2137 | } |
| 2138 | |
| 2139 | BLOCK_INPUT; |
| 2140 | |
| 2141 | /* Don't mess up with an empty value. */ |
| 2142 | if (!bytes_remaining) |
| 2143 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, |
| 2144 | PropModeReplace, data, 0); |
| 2145 | |
| 2146 | while (bytes_remaining) |
| 2147 | { |
| 2148 | int chunk = (bytes_remaining < max_bytes |
| 2149 | ? bytes_remaining : max_bytes); |
| 2150 | XChangeProperty (display, window, buffer_atom, XA_STRING, 8, |
| 2151 | (bytes_remaining == bytes |
| 2152 | ? PropModeReplace |
| 2153 | : PropModeAppend), |
| 2154 | data, chunk); |
| 2155 | data += chunk; |
| 2156 | bytes_remaining -= chunk; |
| 2157 | } |
| 2158 | UNBLOCK_INPUT; |
| 2159 | return string; |
| 2160 | } |
| 2161 | |
| 2162 | |
| 2163 | DEFUN ("x-rotate-cut-buffers-internal", Fx_rotate_cut_buffers_internal, |
| 2164 | Sx_rotate_cut_buffers_internal, 1, 1, 0, |
| 2165 | "Rotate the values of the cut buffers by the given number of steps;\n\ |
| 2166 | positive means move values forward, negative means backward.") |
| 2167 | (n) |
| 2168 | Lisp_Object n; |
| 2169 | { |
| 2170 | Window window; |
| 2171 | Atom props[8]; |
| 2172 | Display *display; |
| 2173 | |
| 2174 | check_x (); |
| 2175 | display = FRAME_X_DISPLAY (selected_frame); |
| 2176 | window = RootWindow (display, 0); /* Cut buffers are on screen 0 */ |
| 2177 | CHECK_NUMBER (n, 0); |
| 2178 | if (XINT (n) == 0) |
| 2179 | return n; |
| 2180 | if (! FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized) |
| 2181 | { |
| 2182 | initialize_cut_buffers (display, window); |
| 2183 | FRAME_X_DISPLAY_INFO (selected_frame)->cut_buffers_initialized = 1; |
| 2184 | } |
| 2185 | |
| 2186 | props[0] = XA_CUT_BUFFER0; |
| 2187 | props[1] = XA_CUT_BUFFER1; |
| 2188 | props[2] = XA_CUT_BUFFER2; |
| 2189 | props[3] = XA_CUT_BUFFER3; |
| 2190 | props[4] = XA_CUT_BUFFER4; |
| 2191 | props[5] = XA_CUT_BUFFER5; |
| 2192 | props[6] = XA_CUT_BUFFER6; |
| 2193 | props[7] = XA_CUT_BUFFER7; |
| 2194 | BLOCK_INPUT; |
| 2195 | XRotateWindowProperties (display, window, props, 8, XINT (n)); |
| 2196 | UNBLOCK_INPUT; |
| 2197 | return n; |
| 2198 | } |
| 2199 | |
| 2200 | #endif |
| 2201 | \f |
| 2202 | void |
| 2203 | syms_of_xselect () |
| 2204 | { |
| 2205 | defsubr (&Sx_get_selection_internal); |
| 2206 | defsubr (&Sx_own_selection_internal); |
| 2207 | defsubr (&Sx_disown_selection_internal); |
| 2208 | defsubr (&Sx_selection_owner_p); |
| 2209 | defsubr (&Sx_selection_exists_p); |
| 2210 | |
| 2211 | #ifdef CUT_BUFFER_SUPPORT |
| 2212 | defsubr (&Sx_get_cut_buffer_internal); |
| 2213 | defsubr (&Sx_store_cut_buffer_internal); |
| 2214 | defsubr (&Sx_rotate_cut_buffers_internal); |
| 2215 | #endif |
| 2216 | |
| 2217 | reading_selection_reply = Fcons (Qnil, Qnil); |
| 2218 | staticpro (&reading_selection_reply); |
| 2219 | reading_selection_window = 0; |
| 2220 | reading_which_selection = 0; |
| 2221 | |
| 2222 | property_change_wait_list = 0; |
| 2223 | prop_location_identifier = 0; |
| 2224 | property_change_reply = Fcons (Qnil, Qnil); |
| 2225 | staticpro (&property_change_reply); |
| 2226 | |
| 2227 | Vselection_alist = Qnil; |
| 2228 | staticpro (&Vselection_alist); |
| 2229 | |
| 2230 | DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist, |
| 2231 | "An alist associating X Windows selection-types with functions.\n\ |
| 2232 | These functions are called to convert the selection, with three args:\n\ |
| 2233 | the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ |
| 2234 | a desired type to which the selection should be converted;\n\ |
| 2235 | and the local selection value (whatever was given to `x-own-selection').\n\ |
| 2236 | \n\ |
| 2237 | The function should return the value to send to the X server\n\ |
| 2238 | \(typically a string). A return value of nil\n\ |
| 2239 | means that the conversion could not be done.\n\ |
| 2240 | A return value which is the symbol `NULL'\n\ |
| 2241 | means that a side-effect was executed,\n\ |
| 2242 | and there is no meaningful selection value."); |
| 2243 | Vselection_converter_alist = Qnil; |
| 2244 | |
| 2245 | DEFVAR_LISP ("x-lost-selection-hooks", &Vx_lost_selection_hooks, |
| 2246 | "A list of functions to be called when Emacs loses an X selection.\n\ |
| 2247 | \(This happens when some other X client makes its own selection\n\ |
| 2248 | or when a Lisp program explicitly clears the selection.)\n\ |
| 2249 | The functions are called with one argument, the selection type\n\ |
| 2250 | \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD')."); |
| 2251 | Vx_lost_selection_hooks = Qnil; |
| 2252 | |
| 2253 | DEFVAR_LISP ("x-sent-selection-hooks", &Vx_sent_selection_hooks, |
| 2254 | "A list of functions to be called when Emacs answers a selection request.\n\ |
| 2255 | The functions are called with four arguments:\n\ |
| 2256 | - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ |
| 2257 | - the selection-type which Emacs was asked to convert the\n\ |
| 2258 | selection into before sending (for example, `STRING' or `LENGTH');\n\ |
| 2259 | - a flag indicating success or failure for responding to the request.\n\ |
| 2260 | We might have failed (and declined the request) for any number of reasons,\n\ |
| 2261 | including being asked for a selection that we no longer own, or being asked\n\ |
| 2262 | to convert into a type that we don't know about or that is inappropriate.\n\ |
| 2263 | This hook doesn't let you change the behavior of Emacs's selection replies,\n\ |
| 2264 | it merely informs you that they have happened."); |
| 2265 | Vx_sent_selection_hooks = Qnil; |
| 2266 | |
| 2267 | DEFVAR_LISP("clipboard-coding-system", &Vclipboard_coding_system, |
| 2268 | "Coding system for communicating with other X clients. |
| 2269 | When sending or receiving text via cut_buffer, selection, and clipboard, |
| 2270 | the text is encoded or decoded by this coding system. |
| 2271 | A default value is `iso-latin-1'"); |
| 2272 | Vclipboard_coding_system=intern ("iso-latin-1"); |
| 2273 | staticpro(&Vclipboard_coding_system); |
| 2274 | |
| 2275 | DEFVAR_INT ("x-selection-timeout", &x_selection_timeout, |
| 2276 | "Number of milliseconds to wait for a selection reply.\n\ |
| 2277 | If the selection owner doesn't reply in this time, we give up.\n\ |
| 2278 | A value of 0 means wait as long as necessary. This is initialized from the\n\ |
| 2279 | \"*selectionTimeout\" resource."); |
| 2280 | x_selection_timeout = 0; |
| 2281 | |
| 2282 | QPRIMARY = intern ("PRIMARY"); staticpro (&QPRIMARY); |
| 2283 | QSECONDARY = intern ("SECONDARY"); staticpro (&QSECONDARY); |
| 2284 | QSTRING = intern ("STRING"); staticpro (&QSTRING); |
| 2285 | QINTEGER = intern ("INTEGER"); staticpro (&QINTEGER); |
| 2286 | QCLIPBOARD = intern ("CLIPBOARD"); staticpro (&QCLIPBOARD); |
| 2287 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); |
| 2288 | QTEXT = intern ("TEXT"); staticpro (&QTEXT); |
| 2289 | QCOMPOUND_TEXT = intern ("COMPOUND_TEXT"); staticpro (&QCOMPOUND_TEXT); |
| 2290 | QTIMESTAMP = intern ("TIMESTAMP"); staticpro (&QTIMESTAMP); |
| 2291 | QDELETE = intern ("DELETE"); staticpro (&QDELETE); |
| 2292 | QMULTIPLE = intern ("MULTIPLE"); staticpro (&QMULTIPLE); |
| 2293 | QINCR = intern ("INCR"); staticpro (&QINCR); |
| 2294 | QEMACS_TMP = intern ("_EMACS_TMP_"); staticpro (&QEMACS_TMP); |
| 2295 | QTARGETS = intern ("TARGETS"); staticpro (&QTARGETS); |
| 2296 | QATOM = intern ("ATOM"); staticpro (&QATOM); |
| 2297 | QATOM_PAIR = intern ("ATOM_PAIR"); staticpro (&QATOM_PAIR); |
| 2298 | QNULL = intern ("NULL"); staticpro (&QNULL); |
| 2299 | |
| 2300 | #ifdef CUT_BUFFER_SUPPORT |
| 2301 | QCUT_BUFFER0 = intern ("CUT_BUFFER0"); staticpro (&QCUT_BUFFER0); |
| 2302 | QCUT_BUFFER1 = intern ("CUT_BUFFER1"); staticpro (&QCUT_BUFFER1); |
| 2303 | QCUT_BUFFER2 = intern ("CUT_BUFFER2"); staticpro (&QCUT_BUFFER2); |
| 2304 | QCUT_BUFFER3 = intern ("CUT_BUFFER3"); staticpro (&QCUT_BUFFER3); |
| 2305 | QCUT_BUFFER4 = intern ("CUT_BUFFER4"); staticpro (&QCUT_BUFFER4); |
| 2306 | QCUT_BUFFER5 = intern ("CUT_BUFFER5"); staticpro (&QCUT_BUFFER5); |
| 2307 | QCUT_BUFFER6 = intern ("CUT_BUFFER6"); staticpro (&QCUT_BUFFER6); |
| 2308 | QCUT_BUFFER7 = intern ("CUT_BUFFER7"); staticpro (&QCUT_BUFFER7); |
| 2309 | #endif |
| 2310 | |
| 2311 | } |