Mercurial > hg > xemacs-beta
annotate src/select-msw.c @ 5001:714d854d00e9
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| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Sun, 07 Feb 2010 05:23:07 -0600 |
| parents | 3c3c1d139863 |
| children | 308d34e9f07d |
| rev | line source |
|---|---|
| 428 | 1 /* mswindows selection processing for XEmacs |
| 2 Copyright (C) 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc. | |
| 800 | 3 Copyright (C) 2000, 2001, 2002 Ben Wing. |
| 428 | 4 |
| 5 This file is part of XEmacs. | |
| 6 | |
| 7 XEmacs is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 9 Free Software Foundation; either version 2, or (at your option) any | |
| 10 later version. | |
| 11 | |
| 12 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with XEmacs; see the file COPYING. If not, write to | |
| 19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 20 Boston, MA 02111-1307, USA. */ | |
| 21 | |
| 22 /* Synched up with: Not synched with FSF. */ | |
| 23 | |
| 771 | 24 /* This file Mule-ized 7-00?? Needs some Unicode review. --ben */ |
| 25 | |
| 428 | 26 /* Authorship: |
| 27 | |
| 28 Written by Kevin Gallo for FSF Emacs. | |
| 29 Rewritten for mswindows by Jonathan Harris, December 1997 for 21.0. | |
| 771 | 30 Rewritten April 2000 by Ben Wing -- support device methods, Mule-ize. |
| 442 | 31 Hacked by Alastair Houghton, July 2000 for enhanced clipboard support. |
| 32 */ | |
| 428 | 33 |
| 34 #include <config.h> | |
| 35 #include "lisp.h" | |
| 771 | 36 #include "buffer.h" |
| 872 | 37 #include "frame-impl.h" |
| 428 | 38 #include "select.h" |
| 442 | 39 #include "opaque.h" |
| 40 #include "file-coding.h" | |
| 428 | 41 |
| 872 | 42 #include "console-msw-impl.h" |
| 428 | 43 |
| 771 | 44 static int in_own_selection; |
| 45 | |
| 442 | 46 /* A list of handles that we must release. Not accessible from Lisp. */ |
| 47 static Lisp_Object Vhandle_alist; | |
| 48 | |
| 771 | 49 void |
| 50 mswindows_handle_destroyclipboard (void) | |
| 51 { | |
| 52 /* We also receive a destroy message when we call EmptyClipboard() and | |
| 53 we already own it. In this case we don't want to call | |
| 54 handle_selection_clear() because it will remove what we're trying | |
| 55 to add! */ | |
| 56 if (!in_own_selection) | |
| 57 { | |
| 58 /* We own the clipboard and someone else wants it. Delete our | |
| 59 cached copy of the clipboard contents so we'll ask for it from | |
| 60 Windows again when someone does a paste, and destroy any memory | |
| 61 objects we hold on the clipboard that are not in the list of types | |
| 62 that Windows will delete itself. */ | |
| 63 mswindows_destroy_selection (QCLIPBOARD); | |
| 64 handle_selection_clear (QCLIPBOARD); | |
| 65 } | |
| 66 } | |
| 67 | |
| 68 static int | |
| 69 mswindows_empty_clipboard (void) | |
| 70 { | |
| 71 int retval; | |
| 72 | |
| 73 in_own_selection = 1; | |
| 74 retval = EmptyClipboard (); | |
| 75 in_own_selection = 0; | |
| 76 return retval; | |
| 77 } | |
| 78 | |
| 442 | 79 /* Test if this is an X symbol that we understand */ |
| 80 static int | |
| 81 x_sym_p (Lisp_Object value) | |
| 82 { | |
| 83 if (NILP (value) || INTP (value)) | |
| 84 return 0; | |
| 85 | |
| 86 /* Check for some of the X symbols */ | |
| 87 if (EQ (value, QSTRING)) return 1; | |
| 88 if (EQ (value, QTEXT)) return 1; | |
| 89 if (EQ (value, QCOMPOUND_TEXT)) return 1; | |
| 90 | |
| 91 return 0; | |
| 92 } | |
| 93 | |
| 94 /* This converts a Lisp symbol to an MS-Windows clipboard format. | |
| 95 We have symbols for all predefined clipboard formats, but that | |
| 96 doesn't mean we support them all ;-) | |
| 97 The name of this function is actually a lie - it also knows about | |
| 98 integers and strings... */ | |
| 99 static UINT | |
| 100 symbol_to_ms_cf (Lisp_Object value) | |
| 428 | 101 { |
| 442 | 102 /* If it's NIL, we're in trouble. */ |
| 103 if (NILP (value)) return 0; | |
| 104 | |
| 105 /* If it's an integer, assume it's a format ID */ | |
| 106 if (INTP (value)) return (UINT) (XINT (value)); | |
| 107 | |
| 108 /* If it's a string, register the format(!) */ | |
| 109 if (STRINGP (value)) | |
| 771 | 110 { |
| 111 Extbyte *valext; | |
|
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112 valext = LISP_STRING_TO_TSTR (value); |
| 771 | 113 return qxeRegisterClipboardFormat (valext); |
| 114 } | |
| 442 | 115 |
| 116 /* Check for Windows clipboard format symbols */ | |
| 117 if (EQ (value, QCF_TEXT)) return CF_TEXT; | |
| 118 if (EQ (value, QCF_BITMAP)) return CF_BITMAP; | |
| 119 if (EQ (value, QCF_METAFILEPICT)) return CF_METAFILEPICT; | |
| 120 if (EQ (value, QCF_SYLK)) return CF_SYLK; | |
| 121 if (EQ (value, QCF_DIF)) return CF_DIF; | |
| 122 if (EQ (value, QCF_TIFF)) return CF_TIFF; | |
| 123 if (EQ (value, QCF_OEMTEXT)) return CF_OEMTEXT; | |
| 124 if (EQ (value, QCF_DIB)) return CF_DIB; | |
| 125 #ifdef CF_DIBV5 | |
| 126 if (EQ (value, QCF_DIBV5)) return CF_DIBV5; | |
| 127 #endif | |
| 128 if (EQ (value, QCF_PALETTE)) return CF_PALETTE; | |
| 129 if (EQ (value, QCF_PENDATA)) return CF_PENDATA; | |
| 130 if (EQ (value, QCF_RIFF)) return CF_RIFF; | |
| 131 if (EQ (value, QCF_WAVE)) return CF_WAVE; | |
| 132 if (EQ (value, QCF_UNICODETEXT)) return CF_UNICODETEXT; | |
| 133 if (EQ (value, QCF_ENHMETAFILE)) return CF_ENHMETAFILE; | |
| 134 if (EQ (value, QCF_HDROP)) return CF_HDROP; | |
| 135 if (EQ (value, QCF_LOCALE)) return CF_LOCALE; | |
| 136 if (EQ (value, QCF_OWNERDISPLAY)) return CF_OWNERDISPLAY; | |
| 137 if (EQ (value, QCF_DSPTEXT)) return CF_DSPTEXT; | |
| 138 if (EQ (value, QCF_DSPBITMAP)) return CF_DSPBITMAP; | |
| 139 if (EQ (value, QCF_DSPMETAFILEPICT)) return CF_DSPMETAFILEPICT; | |
| 140 if (EQ (value, QCF_DSPENHMETAFILE)) return CF_DSPENHMETAFILE; | |
| 141 | |
| 142 return 0; | |
| 143 } | |
| 144 | |
| 145 /* This converts an MS-Windows clipboard format to its corresponding | |
| 146 Lisp symbol, or a Lisp integer otherwise. */ | |
| 147 static Lisp_Object | |
| 148 ms_cf_to_symbol (UINT format) | |
| 149 { | |
| 150 switch (format) | |
| 151 { | |
| 152 case CF_TEXT: return QCF_TEXT; | |
| 153 case CF_BITMAP: return QCF_BITMAP; | |
| 154 case CF_METAFILEPICT: return QCF_METAFILEPICT; | |
| 155 case CF_SYLK: return QCF_SYLK; | |
| 156 case CF_DIF: return QCF_DIF; | |
| 157 case CF_TIFF: return QCF_TIFF; | |
| 158 case CF_OEMTEXT: return QCF_OEMTEXT; | |
| 159 case CF_DIB: return QCF_DIB; | |
| 160 #ifdef CF_DIBV5 | |
| 161 case CF_DIBV5: return QCF_DIBV5; | |
| 162 #endif | |
| 163 case CF_PALETTE: return QCF_PALETTE; | |
| 164 case CF_PENDATA: return QCF_PENDATA; | |
| 165 case CF_RIFF: return QCF_RIFF; | |
| 166 case CF_WAVE: return QCF_WAVE; | |
| 167 case CF_UNICODETEXT: return QCF_UNICODETEXT; | |
| 168 case CF_ENHMETAFILE: return QCF_ENHMETAFILE; | |
| 169 case CF_HDROP: return QCF_HDROP; | |
| 170 case CF_LOCALE: return QCF_LOCALE; | |
| 171 case CF_OWNERDISPLAY: return QCF_OWNERDISPLAY; | |
| 172 case CF_DSPTEXT: return QCF_DSPTEXT; | |
| 173 case CF_DSPBITMAP: return QCF_DSPBITMAP; | |
| 174 case CF_DSPMETAFILEPICT: return QCF_DSPMETAFILEPICT; | |
| 175 case CF_DSPENHMETAFILE: return QCF_DSPENHMETAFILE; | |
| 176 default: return make_int ((int) format); | |
| 177 } | |
| 178 } | |
| 428 | 179 |
| 442 | 180 /* Test if the specified clipboard format is auto-released by the OS. If |
| 181 not, we must remember the handle on Vhandle_alist, and free it if | |
| 182 the clipboard is emptied or if we set data with the same format. */ | |
| 183 static int | |
| 184 cf_is_autofreed (UINT format) | |
| 185 { | |
| 186 switch (format) | |
| 187 { | |
| 188 /* This list comes from the SDK documentation */ | |
| 189 case CF_DSPENHMETAFILE: | |
| 190 case CF_DSPMETAFILEPICT: | |
| 191 case CF_ENHMETAFILE: | |
| 192 case CF_METAFILEPICT: | |
| 193 case CF_BITMAP: | |
| 194 case CF_DSPBITMAP: | |
| 195 case CF_PALETTE: | |
| 196 case CF_DIB: | |
| 197 #ifdef CF_DIBV5 | |
| 198 case CF_DIBV5: | |
| 199 #endif | |
| 200 case CF_DSPTEXT: | |
| 201 case CF_OEMTEXT: | |
| 202 case CF_TEXT: | |
| 203 case CF_UNICODETEXT: | |
| 204 return TRUE; | |
| 205 | |
| 206 default: | |
| 207 return FALSE; | |
| 208 } | |
| 209 } | |
| 210 | |
| 211 /* Do protocol to assert ourself as a selection owner. | |
| 212 | |
| 213 Under mswindows, we: | |
| 214 | |
| 215 * Only set the clipboard if (eq selection-name 'CLIPBOARD) | |
| 216 | |
| 217 * Check if an X atom name has been passed. If so, convert to CF_TEXT | |
| 218 (or CF_UNICODETEXT) remembering to perform LF -> CR-LF conversion. | |
| 219 | |
| 220 * Otherwise assume the data is formatted appropriately for the data type | |
| 221 that was passed. | |
| 222 | |
| 223 Then set the clipboard as necessary. | |
| 224 */ | |
| 225 static Lisp_Object | |
| 226 mswindows_own_selection (Lisp_Object selection_name, | |
| 227 Lisp_Object selection_value, | |
| 228 Lisp_Object how_to_add, | |
| 456 | 229 Lisp_Object selection_type, |
| 2286 | 230 int UNUSED (owned_p)) |
| 442 | 231 { |
| 232 HGLOBAL hValue = NULL; | |
| 233 UINT cfType; | |
| 234 int is_X_type = FALSE; | |
| 235 Lisp_Object cfObject; | |
| 236 Lisp_Object data = Qnil; | |
| 237 int size; | |
| 238 void *src, *dst; | |
| 239 struct frame *f = NULL; | |
| 428 | 240 |
| 442 | 241 /* Only continue if we're trying to set the clipboard - mswindows doesn't |
| 242 use the same selection model as X */ | |
| 243 if (!EQ (selection_name, QCLIPBOARD)) | |
| 244 return Qnil; | |
| 245 | |
| 246 /* If this is one of the X-style atom name symbols, or NIL, convert it | |
| 247 as appropriate */ | |
| 248 if (NILP (selection_type) || x_sym_p (selection_type)) | |
| 249 { | |
| 250 /* Should COMPOUND_TEXT map to CF_UNICODETEXT? */ | |
| 771 | 251 if (XEUNICODE_P) |
| 252 { | |
| 253 cfType = CF_UNICODETEXT; | |
| 254 cfObject = QCF_UNICODETEXT; | |
| 255 } | |
| 256 else | |
| 257 { | |
| 258 cfType = CF_TEXT; | |
| 259 cfObject = QCF_TEXT; | |
| 260 } | |
| 442 | 261 is_X_type = TRUE; |
| 262 } | |
| 263 else | |
| 264 { | |
| 265 cfType = symbol_to_ms_cf (selection_type); | |
| 266 | |
| 267 /* Only continue if we can figure out a clipboard type */ | |
| 268 if (!cfType) | |
| 269 return Qnil; | |
| 270 | |
| 271 cfObject = selection_type; | |
| 272 } | |
| 273 | |
| 274 /* Convert things appropriately */ | |
| 275 data = select_convert_out (selection_name, | |
| 276 cfObject, | |
| 277 selection_value); | |
| 428 | 278 |
| 442 | 279 if (NILP (data)) |
| 280 return Qnil; | |
| 281 | |
| 282 if (CONSP (data)) | |
| 283 { | |
| 284 if (!EQ (XCAR (data), cfObject)) | |
| 285 cfType = symbol_to_ms_cf (XCAR (data)); | |
| 286 | |
| 287 if (!cfType) | |
| 288 return Qnil; | |
| 289 | |
| 290 data = XCDR (data); | |
| 291 } | |
| 292 | |
| 293 /* We support opaque or string values, but we only mention string | |
| 771 | 294 values for now... |
| 295 #### where do the opaque objects come from? currently they're not | |
| 296 allowed to be exported to the lisp level! */ | |
| 442 | 297 if (!OPAQUEP (data) |
| 298 && !STRINGP (data)) | |
| 299 return Qnil; | |
| 300 | |
| 301 /* Find the frame */ | |
| 430 | 302 f = selected_frame (); |
| 442 | 303 |
| 304 /* Open the clipboard */ | |
| 430 | 305 if (!OpenClipboard (FRAME_MSWINDOWS_HANDLE (f))) |
| 428 | 306 return Qnil; |
| 307 | |
| 771 | 308 /* Obtain the data */ |
| 309 if (OPAQUEP (data)) | |
| 310 { | |
| 311 src = XOPAQUE_DATA (data); | |
| 312 size = XOPAQUE_SIZE (data); | |
| 313 } | |
| 314 else | |
| 315 /* we do NOT append a zero byte. we don't know whether we're dealing | |
| 316 with regular text, unicode text, binary data, etc. */ | |
| 851 | 317 TO_EXTERNAL_FORMAT (LISP_STRING, data, MALLOC, (src, size), |
| 771 | 318 Qbinary); |
| 319 | |
| 442 | 320 /* Allocate memory */ |
| 321 hValue = GlobalAlloc (GMEM_DDESHARE | GMEM_MOVEABLE, size); | |
| 322 | |
| 323 if (!hValue) | |
| 428 | 324 { |
| 325 CloseClipboard (); | |
| 442 | 326 |
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327 xfree (src); |
| 442 | 328 return Qnil; |
| 329 } | |
| 330 | |
| 331 dst = GlobalLock (hValue); | |
| 332 | |
| 333 if (!dst) | |
| 334 { | |
| 335 GlobalFree (hValue); | |
| 336 CloseClipboard (); | |
| 337 | |
|
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diff
changeset
|
338 xfree (src); |
| 428 | 339 return Qnil; |
| 340 } | |
| 442 | 341 |
| 342 memcpy (dst, src, size); | |
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343 xfree (src); |
| 442 | 344 |
| 345 GlobalUnlock (hValue); | |
| 346 | |
| 347 /* Empty the clipboard if we're replacing everything */ | |
| 348 if (NILP (how_to_add) || EQ (how_to_add, Qreplace_all)) | |
| 428 | 349 { |
| 771 | 350 if (!mswindows_empty_clipboard ()) |
| 428 | 351 { |
| 442 | 352 CloseClipboard (); |
| 353 GlobalFree (hValue); | |
| 354 | |
| 355 return Qnil; | |
| 356 } | |
| 428 | 357 } |
| 442 | 358 |
| 359 /* Append is currently handled in select.el; perhaps this should change, | |
| 360 but it only really makes sense for ordinary text in any case... */ | |
| 361 | |
| 362 SetClipboardData (cfType, hValue); | |
| 363 | |
| 364 if (!cf_is_autofreed (cfType)) | |
| 365 { | |
| 366 Lisp_Object alist_elt = Qnil, rest; | |
| 367 Lisp_Object cfType_int = make_int (cfType); | |
| 368 | |
| 369 /* First check if there's an element in the alist for this type | |
| 370 already. */ | |
| 371 alist_elt = assq_no_quit (cfType_int, Vhandle_alist); | |
| 372 | |
| 373 /* Add an element to the alist */ | |
| 374 Vhandle_alist = Fcons (Fcons (cfType_int, make_opaque_ptr (hValue)), | |
| 375 Vhandle_alist); | |
| 376 | |
| 377 if (!NILP (alist_elt)) | |
| 378 { | |
| 379 /* Free the original handle */ | |
| 380 GlobalFree ((HGLOBAL) get_opaque_ptr (XCDR (alist_elt))); | |
| 381 | |
| 771 | 382 /* Remove the original one (adding first makes life easier, |
| 383 because we don't have to special case this being the | |
| 384 first element) */ | |
| 442 | 385 for (rest = Vhandle_alist; !NILP (rest); rest = Fcdr (rest)) |
| 386 if (EQ (cfType_int, Fcar (XCDR (rest)))) | |
| 387 { | |
| 388 XCDR (rest) = Fcdr (XCDR (rest)); | |
| 389 break; | |
| 390 } | |
| 391 } | |
| 392 } | |
| 393 | |
| 428 | 394 CloseClipboard (); |
| 442 | 395 |
| 396 /* #### Should really return a time, though this is because of the | |
| 397 X model (by the looks of things) */ | |
| 398 return Qnil; | |
| 428 | 399 } |
| 400 | |
| 401 static Lisp_Object | |
| 442 | 402 mswindows_available_selection_types (Lisp_Object selection_name) |
| 403 { | |
| 404 Lisp_Object types = Qnil; | |
| 405 UINT format = 0; | |
| 406 struct frame *f = NULL; | |
| 407 | |
| 408 if (!EQ (selection_name, QCLIPBOARD)) | |
| 409 return Qnil; | |
| 410 | |
| 411 /* Find the frame */ | |
| 412 f = selected_frame (); | |
| 413 | |
| 414 /* Open the clipboard */ | |
| 415 if (!OpenClipboard (FRAME_MSWINDOWS_HANDLE (f))) | |
| 416 return Qnil; | |
| 417 | |
| 771 | 418 /* [[ ajh - Should there be an unwind-protect handler around this? |
| 419 It could (well it probably won't, but it's always better to | |
| 420 be safe) run out of memory and leave the clipboard open... ]] | |
| 421 -- xemacs in general makes no provisions for out-of-memory errors; | |
| 422 we will probably just crash. fixing this is a huge amount of work, | |
| 423 so don't bother protecting in this case. --ben */ | |
| 442 | 424 |
| 425 while ((format = EnumClipboardFormats (format))) | |
| 426 types = Fcons (ms_cf_to_symbol (format), types); | |
| 427 | |
| 428 /* Close it */ | |
| 429 CloseClipboard (); | |
| 430 | |
| 431 return types; | |
| 432 } | |
| 433 | |
| 434 static Lisp_Object | |
| 435 mswindows_register_selection_data_type (Lisp_Object type_name) | |
| 428 | 436 { |
| 442 | 437 /* Type already checked in select.c */ |
| 771 | 438 Extbyte *nameext; |
| 439 UINT format; | |
| 442 | 440 |
|
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parents:
4953
diff
changeset
|
441 nameext = LISP_STRING_TO_TSTR (type_name); |
| 771 | 442 format = qxeRegisterClipboardFormat (nameext); |
| 442 | 443 |
| 444 if (format) | |
| 445 return make_int ((int) format); | |
| 446 else | |
| 447 return Qnil; | |
| 448 } | |
| 449 | |
| 450 static Lisp_Object | |
| 451 mswindows_selection_data_type_name (Lisp_Object type_id) | |
| 452 { | |
| 771 | 453 UINT format; |
| 454 Extbyte *namebuf; | |
| 455 int numchars; | |
| 442 | 456 |
| 457 /* If it's an integer, convert to a symbol if appropriate */ | |
| 458 if (INTP (type_id)) | |
| 459 type_id = ms_cf_to_symbol (XINT (type_id)); | |
| 460 | |
| 461 /* If this is a symbol, return it */ | |
| 462 if (SYMBOLP (type_id)) | |
| 463 return type_id; | |
| 464 | |
| 465 /* Find the format code */ | |
| 466 format = symbol_to_ms_cf (type_id); | |
| 467 | |
| 468 if (!format) | |
| 469 return Qnil; | |
| 470 | |
| 471 /* Microsoft, stupid Microsoft */ | |
| 771 | 472 { |
| 800 | 473 int size = 64; |
| 771 | 474 do |
| 475 { | |
| 800 | 476 size *= 2; |
| 771 | 477 namebuf = alloca_extbytes (size * XETCHAR_SIZE); |
| 478 numchars = qxeGetClipboardFormatName (format, namebuf, size); | |
| 479 } | |
| 480 while (numchars >= size - 1); | |
| 481 } | |
| 442 | 482 |
| 483 if (numchars) | |
| 771 | 484 return build_tstr_string (namebuf); |
| 428 | 485 |
| 486 return Qnil; | |
| 487 } | |
| 488 | |
| 442 | 489 static Lisp_Object |
| 490 mswindows_get_foreign_selection (Lisp_Object selection_symbol, | |
| 491 Lisp_Object target_type) | |
| 428 | 492 { |
| 442 | 493 HGLOBAL hValue = NULL; |
| 494 UINT cfType; | |
| 495 Lisp_Object cfObject = Qnil, ret = Qnil, value = Qnil; | |
| 496 int is_X_type = FALSE; | |
| 497 int size; | |
| 498 void *data; | |
| 499 struct frame *f = NULL; | |
| 500 struct gcpro gcpro1; | |
| 501 | |
| 502 /* Only continue if we're trying to read the clipboard - mswindows doesn't | |
| 503 use the same selection model as X */ | |
| 504 if (!EQ (selection_symbol, QCLIPBOARD)) | |
| 505 return Qnil; | |
| 428 | 506 |
| 442 | 507 /* If this is one of the X-style atom name symbols, or NIL, convert it |
| 508 as appropriate */ | |
| 509 if (NILP (target_type) || x_sym_p (target_type)) | |
| 510 { | |
| 511 /* Should COMPOUND_TEXT map to CF_UNICODETEXT? */ | |
| 771 | 512 if (XEUNICODE_P) |
| 513 { | |
| 514 cfType = CF_UNICODETEXT; | |
| 515 cfObject = QCF_UNICODETEXT; | |
| 516 } | |
| 517 else | |
| 518 { | |
| 519 cfType = CF_TEXT; | |
| 520 cfObject = QCF_TEXT; | |
| 521 } | |
| 442 | 522 is_X_type = TRUE; |
| 523 } | |
| 524 else | |
| 525 { | |
| 526 cfType = symbol_to_ms_cf (target_type); | |
| 527 | |
| 528 /* Only continue if we can figure out a clipboard type */ | |
| 529 if (!cfType) | |
| 530 return Qnil; | |
| 531 | |
| 532 cfObject = ms_cf_to_symbol (cfType); | |
| 533 } | |
| 534 | |
| 535 /* Find the frame */ | |
| 536 f = selected_frame (); | |
| 537 | |
| 538 /* Open the clipboard */ | |
| 539 if (!OpenClipboard (FRAME_MSWINDOWS_HANDLE (f))) | |
| 428 | 540 return Qnil; |
| 541 | |
| 442 | 542 /* Read the clipboard */ |
| 543 hValue = GetClipboardData (cfType); | |
| 544 | |
| 545 if (!hValue) | |
| 428 | 546 { |
| 442 | 547 CloseClipboard (); |
| 428 | 548 |
| 442 | 549 return Qnil; |
| 550 } | |
| 428 | 551 |
| 442 | 552 /* Find the data */ |
| 553 size = GlobalSize (hValue); | |
| 554 data = GlobalLock (hValue); | |
| 428 | 555 |
| 442 | 556 if (!data) |
| 557 { | |
| 558 CloseClipboard (); | |
| 559 | |
| 560 return Qnil; | |
| 428 | 561 } |
| 562 | |
| 442 | 563 /* Place it in a Lisp string */ |
|
4953
304aebb79cd3
function renamings to track names of char typedefs
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parents:
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diff
changeset
|
564 ret = make_extstring ((Extbyte *) data, size, Qbinary); |
| 442 | 565 |
| 566 GlobalUnlock (data); | |
| 428 | 567 CloseClipboard (); |
| 568 | |
| 442 | 569 GCPRO1 (ret); |
| 428 | 570 |
| 442 | 571 /* Convert this to the appropriate type. If we can't find anything, |
| 572 then we return a cons of the form (DATA-TYPE . STRING), where the | |
| 573 string contains the raw binary data. */ | |
| 574 value = select_convert_in (selection_symbol, | |
| 575 cfObject, | |
| 576 ret); | |
| 428 | 577 |
| 442 | 578 UNGCPRO; |
| 430 | 579 |
| 442 | 580 if (NILP (value)) |
| 581 return Fcons (cfObject, ret); | |
| 582 else | |
| 583 return value; | |
| 428 | 584 } |
| 585 | |
| 586 static void | |
| 2286 | 587 mswindows_disown_selection (Lisp_Object selection, |
| 588 Lisp_Object UNUSED (timeval)) | |
| 428 | 589 { |
| 590 if (EQ (selection, QCLIPBOARD)) | |
| 442 | 591 { |
| 592 BOOL success = OpenClipboard (NULL); | |
| 593 if (success) | |
| 594 { | |
| 771 | 595 /* the caller calls handle_selection_clear(). */ |
| 596 success = mswindows_empty_clipboard (); | |
| 442 | 597 /* Close it regardless of whether empty worked. */ |
| 598 if (!CloseClipboard ()) | |
| 599 success = FALSE; | |
| 600 } | |
| 601 | |
| 602 /* #### return success ? Qt : Qnil; */ | |
| 603 } | |
| 604 } | |
| 605 | |
| 606 void | |
| 607 mswindows_destroy_selection (Lisp_Object selection) | |
| 608 { | |
| 609 /* Do nothing if this isn't for the clipboard. */ | |
| 610 if (!EQ (selection, QCLIPBOARD)) | |
| 611 return; | |
| 612 | |
| 613 /* Right. We need to delete everything in Vhandle_alist. */ | |
| 614 { | |
| 615 LIST_LOOP_2 (elt, Vhandle_alist) | |
| 616 GlobalFree ((HGLOBAL) get_opaque_ptr (XCDR (elt))); | |
| 617 } | |
| 618 | |
| 619 Vhandle_alist = Qnil; | |
| 620 } | |
| 621 | |
| 622 static Lisp_Object | |
| 623 mswindows_selection_exists_p (Lisp_Object selection, | |
| 624 Lisp_Object selection_type) | |
| 625 { | |
| 626 /* We used to be picky about the format, but now we support anything. */ | |
| 627 if (EQ (selection, QCLIPBOARD)) | |
| 628 { | |
| 629 if (NILP (selection_type)) | |
| 630 return CountClipboardFormats () ? Qt : Qnil; | |
| 631 else | |
| 632 return IsClipboardFormatAvailable (symbol_to_ms_cf (selection_type)) | |
| 633 ? Qt : Qnil; | |
| 634 } | |
| 635 else | |
| 636 return Qnil; | |
| 428 | 637 } |
| 638 | |
| 639 | |
| 640 /************************************************************************/ | |
| 641 /* initialization */ | |
| 642 /************************************************************************/ | |
| 643 | |
| 644 void | |
| 645 console_type_create_select_mswindows (void) | |
| 646 { | |
| 647 CONSOLE_HAS_METHOD (mswindows, own_selection); | |
| 648 CONSOLE_HAS_METHOD (mswindows, disown_selection); | |
| 442 | 649 CONSOLE_HAS_METHOD (mswindows, selection_exists_p); |
| 428 | 650 CONSOLE_HAS_METHOD (mswindows, get_foreign_selection); |
| 442 | 651 CONSOLE_HAS_METHOD (mswindows, available_selection_types); |
| 652 CONSOLE_HAS_METHOD (mswindows, register_selection_data_type); | |
| 653 CONSOLE_HAS_METHOD (mswindows, selection_data_type_name); | |
| 428 | 654 } |
| 655 | |
| 656 void | |
| 657 syms_of_select_mswindows (void) | |
| 658 { | |
| 659 } | |
| 660 | |
| 661 void | |
| 662 vars_of_select_mswindows (void) | |
| 663 { | |
| 442 | 664 /* Initialise Vhandle_alist */ |
| 665 Vhandle_alist = Qnil; | |
| 666 staticpro (&Vhandle_alist); | |
| 428 | 667 } |
| 771 | 668 |
| 669 void | |
| 670 init_select_mswindows (void) | |
| 671 { | |
| 672 /* Reinitialise Vhandle_alist */ | |
| 673 /* #### Why do we need to do this? Somehow I added this. --ben */ | |
| 674 Vhandle_alist = Qnil; | |
| 675 } |