Commit | Line | Data |
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e9e23e23 | 1 | /* Selection processing for Emacs on the Microsoft W32 API. |
ee78dc32 GV |
2 | Copyright (C) 1993, 1994 Free Software Foundation. |
3 | ||
3b7ad313 EN |
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. */ | |
ee78dc32 GV |
20 | |
21 | /* Written by Kevin Gallo */ | |
22 | ||
23 | #include <config.h> | |
24 | #include "lisp.h" | |
fbd6baed | 25 | #include "w32term.h" /* for all of the w32 includes */ |
ee78dc32 GV |
26 | #include "dispextern.h" /* frame.h seems to want this */ |
27 | #include "frame.h" /* Need this to get the X window of selected_frame */ | |
28 | #include "blockinput.h" | |
bbb059f3 AI |
29 | #include "buffer.h" |
30 | #include "charset.h" | |
31 | #include "coding.h" | |
ee78dc32 | 32 | |
9aa94bd5 KH |
33 | Lisp_Object QCLIPBOARD; |
34 | ||
bbb059f3 AI |
35 | /* Coding system for communicating with other Windows programs via the |
36 | clipboard. */ | |
72aca5fa | 37 | static Lisp_Object Vselection_coding_system; |
bbb059f3 | 38 | |
93cbf229 GV |
39 | /* Coding system for the next communicating with other X clients. */ |
40 | static Lisp_Object Vnext_selection_coding_system; | |
41 | ||
ee78dc32 | 42 | #if 0 |
fbd6baed | 43 | DEFUN ("w32-open-clipboard", Fw32_open_clipboard, Sw32_open_clipboard, 0, 1, 0, |
ee78dc32 GV |
44 | "This opens the clipboard with the given frame pointer.") |
45 | (frame) | |
46 | Lisp_Object frame; | |
47 | { | |
48 | BOOL ok = FALSE; | |
49 | ||
50 | if (!NILP (frame)) | |
51 | CHECK_LIVE_FRAME (frame, 0); | |
52 | ||
53 | BLOCK_INPUT; | |
54 | ||
fbd6baed | 55 | ok = OpenClipboard ((!NILP (frame) && FRAME_W32_P (XFRAME (frame))) ? FRAME_W32_WINDOW (XFRAME (frame)) : NULL); |
ee78dc32 GV |
56 | |
57 | UNBLOCK_INPUT; | |
58 | ||
59 | return (ok ? frame : Qnil); | |
60 | } | |
61 | ||
fbd6baed | 62 | DEFUN ("w32-empty-clipboard", Fw32_empty_clipboard, Sw32_empty_clipboard, 0, 0, 0, |
ee78dc32 GV |
63 | "This empties the clipboard and assigns ownership to the window which opened the clipboard.") |
64 | () | |
65 | { | |
66 | BOOL ok = FALSE; | |
67 | ||
68 | BLOCK_INPUT; | |
69 | ||
70 | ok = EmptyClipboard (); | |
71 | ||
72 | UNBLOCK_INPUT; | |
73 | ||
74 | return (ok ? Qt : Qnil); | |
75 | } | |
76 | ||
fbd6baed | 77 | DEFUN ("w32-close-clipboard", Fw32_close_clipboard, Sw32_close_clipboard, 0, 0, 0, |
ee78dc32 GV |
78 | "This closes the clipboard.") |
79 | () | |
80 | { | |
81 | BOOL ok = FALSE; | |
82 | ||
83 | BLOCK_INPUT; | |
84 | ||
85 | ok = CloseClipboard (); | |
86 | ||
87 | UNBLOCK_INPUT; | |
88 | ||
89 | return (ok ? Qt : Qnil); | |
90 | } | |
91 | ||
92 | #endif | |
93 | ||
fbd6baed | 94 | DEFUN ("w32-set-clipboard-data", Fw32_set_clipboard_data, Sw32_set_clipboard_data, 1, 2, 0, |
ee78dc32 GV |
95 | "This sets the clipboard data to the given text.") |
96 | (string, frame) | |
97 | Lisp_Object string, frame; | |
98 | { | |
99 | BOOL ok = TRUE; | |
100 | HANDLE htext; | |
69cddef0 | 101 | int nbytes; |
0ece9ef6 | 102 | int truelen, nlines = 0; |
69cddef0 GV |
103 | unsigned char *src; |
104 | unsigned char *dst; | |
0ece9ef6 | 105 | |
ee78dc32 GV |
106 | CHECK_STRING (string, 0); |
107 | ||
108 | if (!NILP (frame)) | |
109 | CHECK_LIVE_FRAME (frame, 0); | |
110 | ||
111 | BLOCK_INPUT; | |
69cddef0 | 112 | |
bbb059f3 | 113 | nbytes = STRING_BYTES (XSTRING (string)) + 1; |
69cddef0 | 114 | src = XSTRING (string)->data; |
0ece9ef6 AI |
115 | dst = src; |
116 | ||
117 | /* We need to know how many lines there are, since we need CRLF line | |
118 | termination for compatibility with other Windows Programs. | |
119 | avoid using strchr because it recomputes the length every time */ | |
120 | while ((dst = memchr (dst, '\n', nbytes - (dst - src))) != NULL) | |
121 | { | |
122 | nlines++; | |
123 | dst++; | |
124 | } | |
69cddef0 | 125 | |
bbb059f3 AI |
126 | { |
127 | /* Since we are now handling multilingual text, we must consider | |
128 | encoding text for the clipboard. */ | |
129 | int charsets[MAX_CHARSET + 1]; | |
130 | int num; | |
131 | ||
132 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); | |
93cbf229 GV |
133 | num = ((nbytes <= 1 /* Check the possibility of short cut. */ |
134 | || !STRING_MULTIBYTE (string) | |
135 | || nbytes == XSTRING (string)->size) | |
bbb059f3 | 136 | ? 0 |
aba6b952 | 137 | : find_charset_in_str (src, nbytes, charsets, Qnil, 1)); |
bbb059f3 AI |
138 | |
139 | if (!num || (num == 1 && charsets[CHARSET_ASCII])) | |
140 | { | |
141 | /* No multibyte character in OBJ. We need not encode it. */ | |
69cddef0 | 142 | |
c0ca703b | 143 | /* Need to know final size after CR chars are inserted (the |
bbb059f3 | 144 | standard CF_TEXT clipboard format uses CRLF line endings, |
c0ca703b | 145 | while Emacs uses just LF internally). */ |
69cddef0 | 146 | |
0ece9ef6 | 147 | truelen = nbytes + nlines; |
69cddef0 | 148 | |
bbb059f3 AI |
149 | if ((htext = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE, truelen)) == NULL) |
150 | goto error; | |
151 | ||
152 | if ((dst = (unsigned char *) GlobalLock (htext)) == NULL) | |
153 | goto error; | |
ee78dc32 | 154 | |
bbb059f3 AI |
155 | /* convert to CRLF line endings expected by clipboard */ |
156 | while (1) | |
157 | { | |
158 | unsigned char *next; | |
159 | /* copy next line or remaining bytes including '\0' */ | |
160 | next = _memccpy (dst, src, '\n', nbytes); | |
161 | if (next) | |
162 | { | |
163 | /* copied one line ending with '\n' */ | |
164 | int copied = next - dst; | |
165 | nbytes -= copied; | |
166 | src += copied; | |
167 | /* insert '\r' before '\n' */ | |
168 | next[-1] = '\r'; | |
169 | next[0] = '\n'; | |
170 | dst = next + 1; | |
171 | } | |
172 | else | |
173 | /* copied remaining partial line -> now finished */ | |
174 | break; | |
175 | } | |
ee78dc32 | 176 | |
bbb059f3 | 177 | GlobalUnlock (htext); |
0108f679 AI |
178 | |
179 | Vlast_coding_system_used = Qraw_text; | |
bbb059f3 AI |
180 | } |
181 | else | |
182 | { | |
183 | /* We must encode contents of OBJ to compound text format. | |
184 | The format is compatible with what the target `STRING' | |
185 | expects if OBJ contains only ASCII and Latin-1 | |
186 | characters. */ | |
187 | int bufsize; | |
188 | struct coding_system coding; | |
189 | HANDLE htext2; | |
190 | ||
93cbf229 GV |
191 | if (NILP (Vnext_selection_coding_system)) |
192 | Vnext_selection_coding_system = Vselection_coding_system; | |
bbb059f3 | 193 | setup_coding_system |
93cbf229 GV |
194 | (Fcheck_coding_system (Vnext_selection_coding_system), &coding); |
195 | Vnext_selection_coding_system = Qnil; | |
bbb059f3 | 196 | coding.mode |= CODING_MODE_LAST_BLOCK; |
43df7d0b | 197 | bufsize = encoding_buffer_size (&coding, nbytes); |
bbb059f3 AI |
198 | if ((htext = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE, bufsize)) == NULL) |
199 | goto error; | |
200 | if ((dst = (unsigned char *) GlobalLock (htext)) == NULL) | |
201 | goto error; | |
202 | encode_coding (&coding, src, dst, nbytes, bufsize); | |
0108f679 | 203 | Vlast_coding_system_used = coding.symbol; |
bbb059f3 AI |
204 | GlobalUnlock (htext); |
205 | /* Shrink data block to actual size. */ | |
206 | htext2 = GlobalReAlloc (htext, coding.produced, GMEM_MOVEABLE | GMEM_DDESHARE); | |
207 | if (htext2 != NULL) htext = htext2; | |
208 | } | |
209 | } | |
ee78dc32 | 210 | |
fbd6baed | 211 | if (!OpenClipboard ((!NILP (frame) && FRAME_W32_P (XFRAME (frame))) ? FRAME_W32_WINDOW (XFRAME (frame)) : NULL)) |
ee78dc32 GV |
212 | goto error; |
213 | ||
214 | ok = EmptyClipboard () && SetClipboardData (CF_TEXT, htext); | |
215 | ||
216 | CloseClipboard (); | |
217 | ||
218 | if (ok) goto done; | |
219 | ||
220 | error: | |
221 | ||
222 | ok = FALSE; | |
223 | if (htext) GlobalFree (htext); | |
224 | ||
225 | done: | |
226 | UNBLOCK_INPUT; | |
227 | ||
228 | return (ok ? string : Qnil); | |
229 | } | |
230 | ||
fbd6baed | 231 | DEFUN ("w32-get-clipboard-data", Fw32_get_clipboard_data, Sw32_get_clipboard_data, 0, 1, 0, |
ee78dc32 GV |
232 | "This gets the clipboard data in text format.") |
233 | (frame) | |
234 | Lisp_Object frame; | |
235 | { | |
236 | HANDLE htext; | |
237 | Lisp_Object ret = Qnil; | |
238 | ||
239 | if (!NILP (frame)) | |
240 | CHECK_LIVE_FRAME (frame, 0); | |
241 | ||
242 | BLOCK_INPUT; | |
243 | ||
fbd6baed | 244 | if (!OpenClipboard ((!NILP (frame) && FRAME_W32_P (XFRAME (frame))) ? FRAME_W32_WINDOW (XFRAME (frame)) : NULL)) |
ee78dc32 GV |
245 | goto done; |
246 | ||
247 | if ((htext = GetClipboardData (CF_TEXT)) == NULL) | |
248 | goto closeclip; | |
249 | ||
ee78dc32 | 250 | { |
69cddef0 GV |
251 | unsigned char *src; |
252 | unsigned char *dst; | |
ee78dc32 | 253 | int nbytes; |
69cddef0 | 254 | int truelen; |
c0ca703b | 255 | int require_decoding = 0; |
ee78dc32 | 256 | |
69cddef0 | 257 | if ((src = (unsigned char *) GlobalLock (htext)) == NULL) |
ee78dc32 GV |
258 | goto closeclip; |
259 | ||
69cddef0 GV |
260 | nbytes = strlen (src); |
261 | ||
93cbf229 GV |
262 | if ( |
263 | #if 1 | |
264 | 1 | |
265 | #else | |
266 | ! NILP (buffer_defaults.enable_multibyte_characters) | |
267 | #endif | |
268 | ) | |
269 | { | |
c0ca703b | 270 | /* If the clipboard data contains any non-ascii code, we |
93cbf229 GV |
271 | need to decode it. */ |
272 | int i; | |
273 | ||
274 | for (i = 0; i < nbytes; i++) | |
275 | { | |
276 | if (src[i] >= 0x80) | |
277 | { | |
c0ca703b | 278 | require_decoding = 1; |
93cbf229 GV |
279 | break; |
280 | } | |
281 | } | |
282 | } | |
283 | ||
c0ca703b | 284 | if (require_decoding) |
69cddef0 | 285 | { |
bbb059f3 AI |
286 | int bufsize; |
287 | unsigned char *buf; | |
288 | struct coding_system coding; | |
289 | ||
93cbf229 GV |
290 | if (NILP (Vnext_selection_coding_system)) |
291 | Vnext_selection_coding_system = Vselection_coding_system; | |
bbb059f3 | 292 | setup_coding_system |
93cbf229 GV |
293 | (Fcheck_coding_system (Vnext_selection_coding_system), &coding); |
294 | Vnext_selection_coding_system = Qnil; | |
bbb059f3 AI |
295 | coding.mode |= CODING_MODE_LAST_BLOCK; |
296 | bufsize = decoding_buffer_size (&coding, nbytes); | |
297 | buf = (unsigned char *) xmalloc (bufsize); | |
298 | decode_coding (&coding, src, buf, nbytes, bufsize); | |
0108f679 | 299 | Vlast_coding_system_used = coding.symbol; |
bbb059f3 AI |
300 | truelen = (coding.fake_multibyte |
301 | ? multibyte_chars_in_text (buf, coding.produced) | |
302 | : coding.produced_char); | |
303 | ret = make_string_from_bytes ((char *) buf, truelen, coding.produced); | |
304 | xfree (buf); | |
69cddef0 | 305 | } |
bbb059f3 AI |
306 | else |
307 | { | |
c0ca703b GV |
308 | /* Need to know final size after CR chars are removed because we |
309 | can't change the string size manually, and doing an extra | |
310 | copy is silly. Note that we only remove CR when it appears | |
311 | as part of CRLF. */ | |
bbb059f3 AI |
312 | |
313 | truelen = nbytes; | |
314 | dst = src; | |
315 | /* avoid using strchr because it recomputes the length everytime */ | |
316 | while ((dst = memchr (dst, '\r', nbytes - (dst - src))) != NULL) | |
317 | { | |
c0ca703b GV |
318 | if (dst[1] == '\n') /* safe because of trailing '\0' */ |
319 | truelen--; | |
bbb059f3 AI |
320 | dst++; |
321 | } | |
69cddef0 | 322 | |
bbb059f3 | 323 | ret = make_uninit_string (truelen); |
69cddef0 | 324 | |
c0ca703b GV |
325 | /* Convert CRLF line endings (the standard CF_TEXT clipboard |
326 | format) to LF endings as used internally by Emacs. */ | |
69cddef0 | 327 | |
bbb059f3 AI |
328 | dst = XSTRING (ret)->data; |
329 | while (1) | |
69cddef0 | 330 | { |
bbb059f3 AI |
331 | unsigned char *next; |
332 | /* copy next line or remaining bytes excluding '\0' */ | |
333 | next = _memccpy (dst, src, '\r', nbytes); | |
334 | if (next) | |
335 | { | |
336 | /* copied one line ending with '\r' */ | |
337 | int copied = next - dst; | |
338 | nbytes -= copied; | |
c0ca703b | 339 | dst += copied; |
bbb059f3 | 340 | src += copied; |
c0ca703b GV |
341 | if (*src == '\n') |
342 | dst--; /* overwrite '\r' with '\n' */ | |
343 | } | |
bbb059f3 AI |
344 | else |
345 | /* copied remaining partial line -> now finished */ | |
346 | break; | |
347 | } | |
0108f679 AI |
348 | |
349 | Vlast_coding_system_used = Qraw_text; | |
69cddef0 GV |
350 | } |
351 | ||
ee78dc32 GV |
352 | GlobalUnlock (htext); |
353 | } | |
354 | ||
355 | closeclip: | |
356 | CloseClipboard (); | |
357 | ||
358 | done: | |
359 | UNBLOCK_INPUT; | |
360 | ||
361 | return (ret); | |
362 | } | |
363 | ||
9aa94bd5 KH |
364 | /* Support checking for a clipboard selection. */ |
365 | ||
366 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
367 | 0, 1, 0, | |
368 | "Whether there is an owner for the given X Selection.\n\ | |
369 | The arg should be the name of the selection in question, typically one of\n\ | |
370 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
371 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
372 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
373 | and t is the same as `SECONDARY'.") | |
374 | (selection) | |
375 | Lisp_Object selection; | |
376 | { | |
377 | CHECK_SYMBOL (selection, 0); | |
378 | ||
379 | /* Return nil for PRIMARY and SECONDARY selections; for CLIPBOARD, check | |
380 | if the clipboard currently has valid text format contents. */ | |
381 | ||
382 | if (EQ (selection, QCLIPBOARD)) | |
383 | { | |
384 | Lisp_Object val = Qnil; | |
385 | ||
386 | if (OpenClipboard (NULL)) | |
387 | { | |
388 | int format = 0; | |
389 | while (format = EnumClipboardFormats (format)) | |
390 | if (format == CF_TEXT) | |
391 | { | |
392 | val = Qt; | |
393 | break; | |
394 | } | |
395 | CloseClipboard (); | |
396 | } | |
397 | return val; | |
398 | } | |
399 | return Qnil; | |
400 | } | |
401 | ||
ee78dc32 | 402 | void |
fbd6baed | 403 | syms_of_w32select () |
ee78dc32 GV |
404 | { |
405 | #if 0 | |
fbd6baed GV |
406 | defsubr (&Sw32_open_clipboard); |
407 | defsubr (&Sw32_empty_clipboard); | |
408 | defsubr (&Sw32_close_clipboard); | |
ee78dc32 | 409 | #endif |
fbd6baed GV |
410 | defsubr (&Sw32_set_clipboard_data); |
411 | defsubr (&Sw32_get_clipboard_data); | |
9aa94bd5 KH |
412 | defsubr (&Sx_selection_exists_p); |
413 | ||
72aca5fa | 414 | DEFVAR_LISP ("selection-coding-system", &Vselection_coding_system, |
bbb059f3 AI |
415 | "Coding system for communicating with other X clients.\n\ |
416 | When sending or receiving text via cut_buffer, selection, and clipboard,\n\ | |
417 | the text is encoded or decoded by this coding system.\n\ | |
418 | A default value is `compound-text'"); | |
72aca5fa | 419 | Vselection_coding_system=intern ("iso-latin-1-dos"); |
bbb059f3 | 420 | |
93cbf229 GV |
421 | DEFVAR_LISP ("next-selection-coding-system", &Vnext_selection_coding_system, |
422 | "Coding system for the next communication with other X clients.\n\ | |
423 | Usually, `selection-coding-system' is used for communicating with\n\ | |
424 | other X clients. But, if this variable is set, it is used for the\n\ | |
425 | next communication only. After the communication, this variable is\n\ | |
426 | set to nil."); | |
427 | Vnext_selection_coding_system = Qnil; | |
428 | ||
9aa94bd5 | 429 | QCLIPBOARD = intern ("CLIPBOARD"); staticpro (&QCLIPBOARD); |
ee78dc32 | 430 | } |