Commit | Line | Data |
---|---|---|
4588ec20 | 1 | /* Updating of data structures for redisplay. |
f8c25f1b | 2 | Copyright (C) 1985, 86, 87, 88, 93, 94, 95 Free Software Foundation, Inc. |
4588ec20 JB |
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 | |
fa61c701 | 8 | the Free Software Foundation; either version 2, or (at your option) |
4588ec20 JB |
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 | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
4588ec20 JB |
20 | |
21 | ||
22 | #include <signal.h> | |
23 | ||
18160b98 | 24 | #include <config.h> |
565620a5 RS |
25 | |
26 | #include <stdio.h> | |
4588ec20 JB |
27 | #include <ctype.h> |
28 | ||
47099d6f | 29 | #include "lisp.h" |
4588ec20 JB |
30 | #include "termchar.h" |
31 | #include "termopts.h" | |
3be08bea | 32 | #include "termhooks.h" |
a0879520 | 33 | /* cm.h must come after dispextern.h on Windows. */ |
fd2e066a GV |
34 | #include "dispextern.h" |
35 | #include "cm.h" | |
4588ec20 | 36 | #include "buffer.h" |
502b9b64 | 37 | #include "frame.h" |
4588ec20 JB |
38 | #include "window.h" |
39 | #include "commands.h" | |
40 | #include "disptab.h" | |
41 | #include "indent.h" | |
d169fe39 | 42 | #include "intervals.h" |
97cf50e7 | 43 | #include "blockinput.h" |
4588ec20 | 44 | |
648fa17d | 45 | #include "systty.h" |
58b2bb63 | 46 | #include "syssignal.h" |
a41f8bed | 47 | |
4588ec20 JB |
48 | #ifdef HAVE_X_WINDOWS |
49 | #include "xterm.h" | |
50 | #endif /* HAVE_X_WINDOWS */ | |
51 | ||
fd2e066a GV |
52 | #ifdef HAVE_NTGUI |
53 | #include "w32term.h" | |
54 | #endif /* HAVE_NTGUI */ | |
55 | ||
6cbd1643 RS |
56 | /* Include systime.h after xterm.h to avoid double inclusion of time.h. */ |
57 | #include "systime.h" | |
58 | ||
3883a901 RS |
59 | #include <errno.h> |
60 | ||
4588ec20 JB |
61 | #define max(a, b) ((a) > (b) ? (a) : (b)) |
62 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
63 | ||
4588ec20 JB |
64 | /* Get number of chars of output now in the buffer of a stdio stream. |
65 | This ought to be built in in stdio, but it isn't. | |
66 | Some s- files override this because their stdio internals differ. */ | |
e3271ae5 | 67 | #ifdef __GNU_LIBRARY__ |
097c2824 RM |
68 | /* The s- file might have overridden the definition with one that works for |
69 | the system's C library. But we are using the GNU C library, so this is | |
70 | the right definition for every system. */ | |
3883a901 RS |
71 | #ifdef GNU_LIBRARY_PENDING_OUTPUT_COUNT |
72 | #define PENDING_OUTPUT_COUNT GNU_LIBRARY_PENDING_OUTPUT_COUNT | |
73 | #else | |
cb5558ff | 74 | #undef PENDING_OUTPUT_COUNT |
e3271ae5 | 75 | #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->__bufp - (FILE)->__buffer) |
3883a901 RS |
76 | #endif |
77 | #else /* not __GNU_LIBRARY__ */ | |
cb5558ff | 78 | #ifndef PENDING_OUTPUT_COUNT |
4588ec20 JB |
79 | #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_ptr - (FILE)->_base) |
80 | #endif | |
e3271ae5 | 81 | #endif |
4588ec20 | 82 | |
45140e01 RS |
83 | static void change_frame_size_1 (); |
84 | ||
a41f8bed | 85 | /* Nonzero upon entry to redisplay means do not assume anything about |
502b9b64 | 86 | current contents of actual terminal frame; clear and redraw it. */ |
4588ec20 | 87 | |
502b9b64 | 88 | int frame_garbaged; |
4588ec20 JB |
89 | |
90 | /* Nonzero means last display completed. Zero means it was preempted. */ | |
91 | ||
92 | int display_completed; | |
93 | ||
94 | /* Lisp variable visible-bell; enables use of screen-flash | |
95 | instead of audible bell. */ | |
96 | ||
97 | int visible_bell; | |
98 | ||
502b9b64 | 99 | /* Invert the color of the whole frame, at a low level. */ |
4588ec20 JB |
100 | |
101 | int inverse_video; | |
102 | ||
103 | /* Line speed of the terminal. */ | |
104 | ||
105 | int baud_rate; | |
106 | ||
107 | /* nil or a symbol naming the window system under which emacs is | |
108 | running ('x is the only current possibility). */ | |
109 | ||
110 | Lisp_Object Vwindow_system; | |
111 | ||
112 | /* Version number of X windows: 10, 11 or nil. */ | |
113 | Lisp_Object Vwindow_system_version; | |
114 | ||
115 | /* Vector of glyph definitions. Indexed by glyph number, | |
116 | the contents are a string which is how to output the glyph. | |
117 | ||
118 | If Vglyph_table is nil, a glyph is output by using its low 8 bits | |
119 | as a character code. */ | |
120 | ||
121 | Lisp_Object Vglyph_table; | |
122 | ||
123 | /* Display table to use for vectors that don't specify their own. */ | |
124 | ||
125 | Lisp_Object Vstandard_display_table; | |
126 | ||
127 | /* Nonzero means reading single-character input with prompt | |
1113d9db JB |
128 | so put cursor on minibuffer after the prompt. |
129 | positive means at end of text in echo area; | |
130 | negative means at beginning of line. */ | |
4588ec20 | 131 | int cursor_in_echo_area; |
9cda4f7c RS |
132 | |
133 | Lisp_Object Qdisplay_table; | |
4588ec20 | 134 | \f |
502b9b64 | 135 | /* The currently selected frame. |
87485d6f MW |
136 | In a single-frame version, this variable always holds the address of |
137 | the_only_frame. */ | |
4588ec20 | 138 | |
502b9b64 | 139 | FRAME_PTR selected_frame; |
4588ec20 | 140 | |
502b9b64 JB |
141 | /* A frame which is not just a minibuffer, or 0 if there are no such |
142 | frames. This is usually the most recent such frame that was | |
87485d6f MW |
143 | selected. In a single-frame version, this variable always holds |
144 | the address of the_only_frame. */ | |
502b9b64 | 145 | FRAME_PTR last_nonminibuf_frame; |
e5d77022 | 146 | |
502b9b64 | 147 | /* In a single-frame version, the information that would otherwise |
190721ac JB |
148 | exist inside frame objects lives in the following structure instead. |
149 | ||
150 | NOTE: the_only_frame is not checked for garbage collection; don't | |
eb8c3be9 | 151 | store collectible objects in any of its fields! |
190721ac JB |
152 | |
153 | You're not/The only frame in town/... */ | |
4588ec20 | 154 | |
502b9b64 JB |
155 | #ifndef MULTI_FRAME |
156 | struct frame the_only_frame; | |
e5d77022 | 157 | #endif |
4588ec20 JB |
158 | |
159 | /* This is a vector, made larger whenever it isn't large enough, | |
502b9b64 JB |
160 | which is used inside `update_frame' to hold the old contents |
161 | of the FRAME_PHYS_LINES of the frame being updated. */ | |
162 | struct frame_glyphs **ophys_lines; | |
4588ec20 JB |
163 | /* Length of vector currently allocated. */ |
164 | int ophys_lines_length; | |
165 | ||
166 | FILE *termscript; /* Stdio stream being used for copy of all output. */ | |
167 | ||
168 | struct cm Wcm; /* Structure for info on cursor positioning */ | |
169 | ||
170 | extern short ospeed; /* Output speed (from sg_ospeed) */ | |
171 | ||
4588ec20 | 172 | int delayed_size_change; /* 1 means SIGWINCH happened when not safe. */ |
4588ec20 | 173 | \f |
502b9b64 | 174 | #ifdef MULTI_FRAME |
4588ec20 | 175 | |
502b9b64 JB |
176 | DEFUN ("redraw-frame", Fredraw_frame, Sredraw_frame, 1, 1, 0, |
177 | "Clear frame FRAME and output again what is supposed to appear on it.") | |
178 | (frame) | |
179 | Lisp_Object frame; | |
4588ec20 | 180 | { |
502b9b64 | 181 | FRAME_PTR f; |
4588ec20 | 182 | |
502b9b64 JB |
183 | CHECK_LIVE_FRAME (frame, 0); |
184 | f = XFRAME (frame); | |
185 | update_begin (f); | |
4588ec20 | 186 | /* set_terminal_modes (); */ |
502b9b64 | 187 | clear_frame (); |
b6a65ac2 | 188 | clear_frame_records (f); |
502b9b64 | 189 | update_end (f); |
4588ec20 | 190 | fflush (stdout); |
4588ec20 JB |
191 | windows_or_buffers_changed++; |
192 | /* Mark all windows as INaccurate, | |
193 | so that every window will have its redisplay done. */ | |
502b9b64 JB |
194 | mark_window_display_accurate (FRAME_ROOT_WINDOW (f), 0); |
195 | f->garbaged = 0; | |
4588ec20 JB |
196 | return Qnil; |
197 | } | |
198 | ||
502b9b64 JB |
199 | redraw_frame (f) |
200 | FRAME_PTR f; | |
4588ec20 | 201 | { |
502b9b64 | 202 | Lisp_Object frame; |
e9c9a718 | 203 | XSETFRAME (frame, f); |
502b9b64 | 204 | Fredraw_frame (frame); |
4588ec20 JB |
205 | } |
206 | ||
35f56f96 | 207 | #else |
4588ec20 | 208 | |
d8039c5c | 209 | DEFUN ("redraw-frame", Fredraw_frame, Sredraw_frame, 1, 1, 0, |
5c586a6c KH |
210 | /* Don't confuse make-docfile by having two doc strings for this function. |
211 | make-docfile does not pay attention to #if, for good reason! */ | |
212 | 0) | |
35f56f96 JB |
213 | (frame) |
214 | Lisp_Object frame; | |
4588ec20 JB |
215 | { |
216 | update_begin (0); | |
217 | set_terminal_modes (); | |
502b9b64 | 218 | clear_frame (); |
4588ec20 JB |
219 | update_end (0); |
220 | fflush (stdout); | |
502b9b64 | 221 | clear_frame_records (0); |
4588ec20 JB |
222 | windows_or_buffers_changed++; |
223 | /* Mark all windows as INaccurate, | |
224 | so that every window will have its redisplay done. */ | |
b5c685f4 | 225 | mark_window_display_accurate (FRAME_ROOT_WINDOW (0), 0); |
4588ec20 JB |
226 | return Qnil; |
227 | } | |
228 | ||
35f56f96 JB |
229 | #endif |
230 | ||
231 | DEFUN ("redraw-display", Fredraw_display, Sredraw_display, 0, 0, "", | |
232 | "Clear and redisplay all visible frames.") | |
233 | () | |
234 | { | |
235 | Lisp_Object tail, frame; | |
236 | ||
237 | FOR_EACH_FRAME (tail, frame) | |
9223a96a | 238 | if (FRAME_VISIBLE_P (XFRAME (frame))) |
35f56f96 JB |
239 | Fredraw_frame (frame); |
240 | ||
241 | return Qnil; | |
242 | } | |
243 | ||
9223a96a RS |
244 | /* This is used when frame_garbaged is set. |
245 | Redraw the individual frames marked as garbaged. */ | |
246 | ||
247 | void | |
248 | redraw_garbaged_frames () | |
249 | { | |
250 | Lisp_Object tail, frame; | |
251 | ||
252 | FOR_EACH_FRAME (tail, frame) | |
253 | if (FRAME_VISIBLE_P (XFRAME (frame)) | |
254 | && FRAME_GARBAGED_P (XFRAME (frame))) | |
255 | Fredraw_frame (frame); | |
256 | } | |
257 | ||
4588ec20 | 258 | \f |
502b9b64 JB |
259 | static struct frame_glyphs * |
260 | make_frame_glyphs (frame, empty) | |
261 | register FRAME_PTR frame; | |
4588ec20 JB |
262 | int empty; |
263 | { | |
264 | register int i; | |
502b9b64 JB |
265 | register width = FRAME_WIDTH (frame); |
266 | register height = FRAME_HEIGHT (frame); | |
60a8948a RS |
267 | register struct frame_glyphs *new |
268 | = (struct frame_glyphs *) xmalloc (sizeof (struct frame_glyphs)); | |
4588ec20 | 269 | |
502b9b64 | 270 | SET_GLYPHS_FRAME (new, frame); |
4588ec20 JB |
271 | new->height = height; |
272 | new->width = width; | |
273 | new->used = (int *) xmalloc (height * sizeof (int)); | |
274 | new->glyphs = (GLYPH **) xmalloc (height * sizeof (GLYPH *)); | |
60a8948a | 275 | new->charstarts = (int **) xmalloc (height * sizeof (int *)); |
4588ec20 JB |
276 | new->highlight = (char *) xmalloc (height * sizeof (char)); |
277 | new->enable = (char *) xmalloc (height * sizeof (char)); | |
278 | bzero (new->enable, height * sizeof (char)); | |
279 | new->bufp = (int *) xmalloc (height * sizeof (int)); | |
280 | ||
fd2e066a GV |
281 | #ifdef HAVE_WINDOW_SYSTEM |
282 | if (FRAME_WINDOW_P (frame)) | |
4588ec20 | 283 | { |
4588ec20 JB |
284 | new->top_left_x = (short *) xmalloc (height * sizeof (short)); |
285 | new->top_left_y = (short *) xmalloc (height * sizeof (short)); | |
286 | new->pix_width = (short *) xmalloc (height * sizeof (short)); | |
287 | new->pix_height = (short *) xmalloc (height * sizeof (short)); | |
448fd7c0 | 288 | new->max_ascent = (short *) xmalloc (height * sizeof (short)); |
4588ec20 | 289 | } |
fd2e066a | 290 | #endif /* HAVE_WINDOW_SYSTEM */ |
4588ec20 JB |
291 | |
292 | if (empty) | |
293 | { | |
294 | /* Make the buffer used by decode_mode_spec. This buffer is also | |
502b9b64 | 295 | used as temporary storage when updating the frame. See scroll.c. */ |
4588ec20 | 296 | unsigned int total_glyphs = (width + 2) * sizeof (GLYPH); |
d52bad65 | 297 | unsigned int total_charstarts = (width + 2) * sizeof (int); |
4588ec20 JB |
298 | |
299 | new->total_contents = (GLYPH *) xmalloc (total_glyphs); | |
300 | bzero (new->total_contents, total_glyphs); | |
d52bad65 RS |
301 | |
302 | new->total_charstarts = (int *) xmalloc (total_charstarts); | |
aba5d0f4 | 303 | bzero (new->total_charstarts, total_charstarts); |
4588ec20 JB |
304 | } |
305 | else | |
306 | { | |
307 | unsigned int total_glyphs = height * (width + 2) * sizeof (GLYPH); | |
308 | ||
309 | new->total_contents = (GLYPH *) xmalloc (total_glyphs); | |
310 | bzero (new->total_contents, total_glyphs); | |
311 | for (i = 0; i < height; i++) | |
312 | new->glyphs[i] = new->total_contents + i * (width + 2) + 1; | |
60a8948a RS |
313 | |
314 | if (!FRAME_TERMCAP_P (frame)) | |
315 | { | |
316 | unsigned int total_charstarts = height * (width + 2) * sizeof (int); | |
317 | ||
318 | new->total_charstarts = (int *) xmalloc (total_charstarts); | |
319 | bzero (new->total_charstarts, total_charstarts); | |
320 | for (i = 0; i < height; i++) | |
321 | new->charstarts[i] = new->total_charstarts + i * (width + 2) + 1; | |
322 | } | |
323 | else | |
324 | { | |
325 | /* Without a window system, we don't really need charstarts. | |
326 | So use a small amount of space to make enough data structure | |
327 | to prevent crashes in display_text_line. */ | |
328 | new->total_charstarts = (int *) xmalloc ((width + 2) * sizeof (int)); | |
329 | for (i = 0; i < height; i++) | |
330 | new->charstarts[i] = new->total_charstarts; | |
331 | } | |
4588ec20 JB |
332 | } |
333 | ||
334 | return new; | |
335 | } | |
336 | ||
05233a7d | 337 | void |
502b9b64 JB |
338 | free_frame_glyphs (frame, glyphs) |
339 | FRAME_PTR frame; | |
340 | struct frame_glyphs *glyphs; | |
4588ec20 JB |
341 | { |
342 | if (glyphs->total_contents) | |
9ac0d9e0 | 343 | xfree (glyphs->total_contents); |
60a8948a RS |
344 | if (glyphs->total_charstarts) |
345 | xfree (glyphs->total_charstarts); | |
4588ec20 | 346 | |
9ac0d9e0 JB |
347 | xfree (glyphs->used); |
348 | xfree (glyphs->glyphs); | |
349 | xfree (glyphs->highlight); | |
350 | xfree (glyphs->enable); | |
351 | xfree (glyphs->bufp); | |
60a8948a RS |
352 | if (glyphs->charstarts) |
353 | xfree (glyphs->charstarts); | |
4588ec20 | 354 | |
fd2e066a GV |
355 | #ifdef HAVE_WINDOW_SYSTEM |
356 | if (FRAME_WINDOW_P (frame)) | |
4588ec20 | 357 | { |
9ac0d9e0 JB |
358 | xfree (glyphs->top_left_x); |
359 | xfree (glyphs->top_left_y); | |
360 | xfree (glyphs->pix_width); | |
361 | xfree (glyphs->pix_height); | |
362 | xfree (glyphs->max_ascent); | |
4588ec20 | 363 | } |
fd2e066a | 364 | #endif /* HAVE_WINDOW_SYSTEM */ |
4588ec20 | 365 | |
9ac0d9e0 | 366 | xfree (glyphs); |
4588ec20 JB |
367 | } |
368 | ||
45140e01 | 369 | void |
502b9b64 JB |
370 | remake_frame_glyphs (frame) |
371 | FRAME_PTR frame; | |
4588ec20 | 372 | { |
502b9b64 JB |
373 | if (FRAME_CURRENT_GLYPHS (frame)) |
374 | free_frame_glyphs (frame, FRAME_CURRENT_GLYPHS (frame)); | |
375 | if (FRAME_DESIRED_GLYPHS (frame)) | |
376 | free_frame_glyphs (frame, FRAME_DESIRED_GLYPHS (frame)); | |
377 | if (FRAME_TEMP_GLYPHS (frame)) | |
378 | free_frame_glyphs (frame, FRAME_TEMP_GLYPHS (frame)); | |
379 | ||
380 | if (FRAME_MESSAGE_BUF (frame)) | |
832a0726 JB |
381 | { |
382 | /* Reallocate the frame's message buffer; remember that | |
383 | echo_area_glyphs may be pointing here. */ | |
384 | char *old_message_buf = FRAME_MESSAGE_BUF (frame); | |
385 | ||
386 | FRAME_MESSAGE_BUF (frame) | |
387 | = (char *) xrealloc (FRAME_MESSAGE_BUF (frame), | |
388 | FRAME_WIDTH (frame) + 1); | |
389 | ||
390 | if (echo_area_glyphs == old_message_buf) | |
391 | echo_area_glyphs = FRAME_MESSAGE_BUF (frame); | |
392 | if (previous_echo_glyphs == old_message_buf) | |
393 | previous_echo_glyphs = FRAME_MESSAGE_BUF (frame); | |
394 | } | |
4588ec20 | 395 | else |
502b9b64 JB |
396 | FRAME_MESSAGE_BUF (frame) |
397 | = (char *) xmalloc (FRAME_WIDTH (frame) + 1); | |
4588ec20 | 398 | |
502b9b64 JB |
399 | FRAME_CURRENT_GLYPHS (frame) = make_frame_glyphs (frame, 0); |
400 | FRAME_DESIRED_GLYPHS (frame) = make_frame_glyphs (frame, 0); | |
401 | FRAME_TEMP_GLYPHS (frame) = make_frame_glyphs (frame, 1); | |
45140e01 RS |
402 | if (! FRAME_TERMCAP_P (frame) || frame == selected_frame) |
403 | SET_FRAME_GARBAGED (frame); | |
4588ec20 JB |
404 | } |
405 | \f | |
502b9b64 | 406 | /* Return the hash code of contents of line VPOS in frame-matrix M. */ |
4588ec20 JB |
407 | |
408 | static int | |
409 | line_hash_code (m, vpos) | |
502b9b64 | 410 | register struct frame_glyphs *m; |
4588ec20 JB |
411 | int vpos; |
412 | { | |
413 | register GLYPH *body, *end; | |
414 | register int h = 0; | |
415 | ||
416 | if (!m->enable[vpos]) | |
417 | return 0; | |
418 | ||
94aa5d2d | 419 | /* Give all highlighted lines the same hash code |
4588ec20 JB |
420 | so as to encourage scrolling to leave them in place. */ |
421 | if (m->highlight[vpos]) | |
422 | return -1; | |
423 | ||
424 | body = m->glyphs[vpos]; | |
425 | ||
426 | if (must_write_spaces) | |
427 | while (1) | |
428 | { | |
429 | GLYPH g = *body++; | |
430 | ||
431 | if (g == 0) | |
432 | break; | |
433 | h = (((h << 4) + (h >> 24)) & 0x0fffffff) + g - SPACEGLYPH; | |
434 | } | |
435 | else | |
436 | while (1) | |
437 | { | |
438 | GLYPH g = *body++; | |
439 | ||
440 | if (g == 0) | |
441 | break; | |
442 | h = (((h << 4) + (h >> 24)) & 0x0fffffff) + g; | |
443 | } | |
444 | ||
445 | if (h) | |
446 | return h; | |
447 | return 1; | |
448 | } | |
449 | ||
450 | /* Return number of characters in line in M at vpos VPOS, | |
451 | except don't count leading and trailing spaces | |
452 | unless the terminal requires those to be explicitly output. */ | |
453 | ||
454 | static unsigned int | |
455 | line_draw_cost (m, vpos) | |
502b9b64 | 456 | struct frame_glyphs *m; |
4588ec20 JB |
457 | int vpos; |
458 | { | |
459 | register GLYPH *beg = m->glyphs[vpos]; | |
460 | register GLYPH *end = m->glyphs[vpos] + m->used[vpos]; | |
461 | register int i; | |
462 | register int tlen = GLYPH_TABLE_LENGTH; | |
463 | register Lisp_Object *tbase = GLYPH_TABLE_BASE; | |
464 | ||
465 | /* Ignore trailing and leading spaces if we can. */ | |
466 | if (!must_write_spaces) | |
467 | { | |
468 | while ((end != beg) && (*end == SPACEGLYPH)) | |
469 | --end; | |
470 | if (end == beg) | |
471 | return (0); /* All blank line. */ | |
472 | ||
473 | while (*beg == SPACEGLYPH) | |
474 | ++beg; | |
475 | } | |
476 | ||
477 | /* If we don't have a glyph-table, each glyph is one character, | |
478 | so return the number of glyphs. */ | |
479 | if (tbase == 0) | |
480 | return end - beg; | |
481 | ||
482 | /* Otherwise, scan the glyphs and accumulate their total size in I. */ | |
483 | i = 0; | |
484 | while ((beg <= end) && *beg) | |
485 | { | |
486 | register GLYPH g = *beg++; | |
487 | ||
488 | if (GLYPH_SIMPLE_P (tbase, tlen, g)) | |
489 | i += 1; | |
490 | else | |
491 | i += GLYPH_LENGTH (tbase, g); | |
492 | } | |
493 | return i; | |
494 | } | |
495 | \f | |
496 | /* The functions on this page are the interface from xdisp.c to redisplay. | |
497 | ||
498 | The only other interface into redisplay is through setting | |
502b9b64 JB |
499 | FRAME_CURSOR_X (frame) and FRAME_CURSOR_Y (frame) |
500 | and SET_FRAME_GARBAGED (frame). */ | |
4588ec20 JB |
501 | |
502 | /* cancel_line eliminates any request to display a line at position `vpos' */ | |
503 | ||
502b9b64 | 504 | cancel_line (vpos, frame) |
4588ec20 | 505 | int vpos; |
502b9b64 | 506 | register FRAME_PTR frame; |
4588ec20 | 507 | { |
502b9b64 | 508 | FRAME_DESIRED_GLYPHS (frame)->enable[vpos] = 0; |
4588ec20 JB |
509 | } |
510 | ||
502b9b64 JB |
511 | clear_frame_records (frame) |
512 | register FRAME_PTR frame; | |
4588ec20 | 513 | { |
502b9b64 | 514 | bzero (FRAME_CURRENT_GLYPHS (frame)->enable, FRAME_HEIGHT (frame)); |
4588ec20 JB |
515 | } |
516 | ||
836d2cde RS |
517 | /* Clear out all display lines for a coming redisplay. */ |
518 | ||
519 | void | |
520 | init_desired_glyphs (frame) | |
521 | register FRAME_PTR frame; | |
522 | { | |
523 | register struct frame_glyphs *desired_glyphs = FRAME_DESIRED_GLYPHS (frame); | |
524 | int vpos; | |
525 | int height = FRAME_HEIGHT (frame); | |
526 | ||
527 | for (vpos = 0; vpos < height; vpos++) | |
528 | desired_glyphs->enable[vpos] = 0; | |
529 | } | |
530 | ||
4588ec20 JB |
531 | /* Prepare to display on line VPOS starting at HPOS within it. */ |
532 | ||
533 | void | |
502b9b64 JB |
534 | get_display_line (frame, vpos, hpos) |
535 | register FRAME_PTR frame; | |
4588ec20 JB |
536 | int vpos; |
537 | register int hpos; | |
538 | { | |
502b9b64 JB |
539 | register struct frame_glyphs *glyphs; |
540 | register struct frame_glyphs *desired_glyphs = FRAME_DESIRED_GLYPHS (frame); | |
4588ec20 JB |
541 | register GLYPH *p; |
542 | ||
7c3c72ec | 543 | if (vpos < 0) |
4588ec20 JB |
544 | abort (); |
545 | ||
4588ec20 JB |
546 | if (! desired_glyphs->enable[vpos]) |
547 | { | |
548 | desired_glyphs->used[vpos] = 0; | |
549 | desired_glyphs->highlight[vpos] = 0; | |
550 | desired_glyphs->enable[vpos] = 1; | |
551 | } | |
552 | ||
553 | if (hpos > desired_glyphs->used[vpos]) | |
554 | { | |
555 | GLYPH *g = desired_glyphs->glyphs[vpos] + desired_glyphs->used[vpos]; | |
556 | GLYPH *end = desired_glyphs->glyphs[vpos] + hpos; | |
557 | ||
558 | desired_glyphs->used[vpos] = hpos; | |
559 | while (g != end) | |
560 | *g++ = SPACEGLYPH; | |
561 | } | |
562 | } | |
563 | ||
564 | /* Like bcopy except never gets confused by overlap. */ | |
565 | ||
566 | void | |
567 | safe_bcopy (from, to, size) | |
568 | char *from, *to; | |
569 | int size; | |
570 | { | |
b5c685f4 | 571 | if (size <= 0 || from == to) |
4588ec20 JB |
572 | return; |
573 | ||
b5c685f4 JB |
574 | /* If the source and destination don't overlap, then bcopy can |
575 | handle it. If they do overlap, but the destination is lower in | |
576 | memory than the source, we'll assume bcopy can handle that. */ | |
577 | if (to < from || from + size <= to) | |
578 | bcopy (from, to, size); | |
579 | ||
580 | /* Otherwise, we'll copy from the end. */ | |
581 | else | |
4588ec20 | 582 | { |
b5c685f4 JB |
583 | register char *endf = from + size; |
584 | register char *endt = to + size; | |
4588ec20 JB |
585 | |
586 | /* If TO - FROM is large, then we should break the copy into | |
587 | nonoverlapping chunks of TO - FROM bytes each. However, if | |
588 | TO - FROM is small, then the bcopy function call overhead | |
589 | makes this not worth it. The crossover point could be about | |
b5c685f4 JB |
590 | anywhere. Since I don't think the obvious copy loop is too |
591 | bad, I'm trying to err in its favor. */ | |
4588ec20 JB |
592 | if (to - from < 64) |
593 | { | |
594 | do | |
595 | *--endt = *--endf; | |
596 | while (endf != from); | |
597 | } | |
598 | else | |
599 | { | |
b5c685f4 | 600 | for (;;) |
4588ec20 JB |
601 | { |
602 | endt -= (to - from); | |
603 | endf -= (to - from); | |
604 | ||
b5c685f4 JB |
605 | if (endt < to) |
606 | break; | |
607 | ||
4588ec20 JB |
608 | bcopy (endf, endt, to - from); |
609 | } | |
b5c685f4 JB |
610 | |
611 | /* If SIZE wasn't a multiple of TO - FROM, there will be a | |
4588ec20 JB |
612 | little left over. The amount left over is |
613 | (endt + (to - from)) - to, which is endt - from. */ | |
614 | bcopy (from, to, endt - from); | |
615 | } | |
616 | } | |
4588ec20 JB |
617 | } |
618 | ||
98038dc0 | 619 | /* Rotate a vector of SIZE bytes right, by DISTANCE bytes. |
4588ec20 JB |
620 | DISTANCE may be negative. */ |
621 | ||
622 | static void | |
623 | rotate_vector (vector, size, distance) | |
624 | char *vector; | |
625 | int size; | |
626 | int distance; | |
627 | { | |
628 | char *temp = (char *) alloca (size); | |
629 | ||
630 | if (distance < 0) | |
631 | distance += size; | |
632 | ||
633 | bcopy (vector, temp + distance, size - distance); | |
634 | bcopy (vector + size - distance, temp, distance); | |
635 | bcopy (temp, vector, size); | |
636 | } | |
637 | ||
638 | /* Scroll lines from vpos FROM up to but not including vpos END | |
639 | down by AMOUNT lines (AMOUNT may be negative). | |
640 | Returns nonzero if done, zero if terminal cannot scroll them. */ | |
641 | ||
642 | int | |
d52bad65 | 643 | scroll_frame_lines (frame, from, end, amount, newpos) |
502b9b64 | 644 | register FRAME_PTR frame; |
d52bad65 | 645 | int from, end, amount, newpos; |
4588ec20 JB |
646 | { |
647 | register int i; | |
502b9b64 JB |
648 | register struct frame_glyphs *current_frame |
649 | = FRAME_CURRENT_GLYPHS (frame); | |
d52bad65 | 650 | int pos_adjust; |
23b0200c | 651 | int width = FRAME_WIDTH (frame); |
4588ec20 JB |
652 | |
653 | if (!line_ins_del_ok) | |
654 | return 0; | |
655 | ||
656 | if (amount == 0) | |
657 | return 1; | |
658 | ||
659 | if (amount > 0) | |
660 | { | |
502b9b64 | 661 | update_begin (frame); |
4588ec20 JB |
662 | set_terminal_window (end + amount); |
663 | if (!scroll_region_ok) | |
664 | ins_del_lines (end, -amount); | |
665 | ins_del_lines (from, amount); | |
666 | set_terminal_window (0); | |
667 | ||
502b9b64 | 668 | rotate_vector (current_frame->glyphs + from, |
4588ec20 JB |
669 | sizeof (GLYPH *) * (end + amount - from), |
670 | amount * sizeof (GLYPH *)); | |
671 | ||
60a8948a | 672 | rotate_vector (current_frame->charstarts + from, |
d52bad65 RS |
673 | sizeof (int *) * (end + amount - from), |
674 | amount * sizeof (int *)); | |
675 | ||
23b0200c RS |
676 | safe_bcopy (current_frame->used + from, |
677 | current_frame->used + from + amount, | |
678 | (end - from) * sizeof current_frame->used[0]); | |
679 | ||
680 | safe_bcopy (current_frame->highlight + from, | |
681 | current_frame->highlight + from + amount, | |
682 | (end - from) * sizeof current_frame->highlight[0]); | |
683 | ||
684 | safe_bcopy (current_frame->enable + from, | |
685 | current_frame->enable + from + amount, | |
686 | (end - from) * sizeof current_frame->enable[0]); | |
687 | ||
d52bad65 RS |
688 | /* Adjust the lines by an amount |
689 | that puts the first of them at NEWPOS. */ | |
23b0200c | 690 | pos_adjust = newpos - current_frame->charstarts[from + amount][0]; |
60a8948a RS |
691 | |
692 | /* Offset each char position in the charstarts lines we moved | |
693 | by pos_adjust. */ | |
23b0200c | 694 | for (i = from + amount; i < end + amount; i++) |
60a8948a | 695 | { |
d52bad65 | 696 | int *line = current_frame->charstarts[i]; |
60a8948a | 697 | int col; |
23b0200c RS |
698 | for (col = 0; col < width; col++) |
699 | if (line[col] > 0) | |
700 | line[col] += pos_adjust; | |
60a8948a | 701 | } |
23b0200c | 702 | for (i = from; i < from + amount; i++) |
60a8948a | 703 | { |
d52bad65 | 704 | int *line = current_frame->charstarts[i]; |
60a8948a RS |
705 | int col; |
706 | line[0] = -1; | |
23b0200c | 707 | for (col = 0; col < width; col++) |
60a8948a RS |
708 | line[col] = 0; |
709 | } | |
710 | ||
4588ec20 JB |
711 | /* Mark the lines made empty by scrolling as enabled, empty and |
712 | normal video. */ | |
502b9b64 JB |
713 | bzero (current_frame->used + from, |
714 | amount * sizeof current_frame->used[0]); | |
715 | bzero (current_frame->highlight + from, | |
716 | amount * sizeof current_frame->highlight[0]); | |
4588ec20 JB |
717 | for (i = from; i < from + amount; i++) |
718 | { | |
502b9b64 | 719 | current_frame->glyphs[i][0] = '\0'; |
60a8948a | 720 | current_frame->charstarts[i][0] = -1; |
502b9b64 | 721 | current_frame->enable[i] = 1; |
4588ec20 JB |
722 | } |
723 | ||
502b9b64 JB |
724 | safe_bcopy (current_frame->bufp + from, |
725 | current_frame->bufp + from + amount, | |
726 | (end - from) * sizeof current_frame->bufp[0]); | |
4588ec20 | 727 | |
fd2e066a GV |
728 | #ifdef HAVE_WINDOW_SYSTEM |
729 | if (FRAME_WINDOW_P (frame)) | |
4588ec20 | 730 | { |
502b9b64 JB |
731 | safe_bcopy (current_frame->top_left_x + from, |
732 | current_frame->top_left_x + from + amount, | |
733 | (end - from) * sizeof current_frame->top_left_x[0]); | |
4588ec20 | 734 | |
502b9b64 JB |
735 | safe_bcopy (current_frame->top_left_y + from, |
736 | current_frame->top_left_y + from + amount, | |
737 | (end - from) * sizeof current_frame->top_left_y[0]); | |
4588ec20 | 738 | |
502b9b64 JB |
739 | safe_bcopy (current_frame->pix_width + from, |
740 | current_frame->pix_width + from + amount, | |
741 | (end - from) * sizeof current_frame->pix_width[0]); | |
4588ec20 | 742 | |
502b9b64 JB |
743 | safe_bcopy (current_frame->pix_height + from, |
744 | current_frame->pix_height + from + amount, | |
745 | (end - from) * sizeof current_frame->pix_height[0]); | |
448fd7c0 JA |
746 | |
747 | safe_bcopy (current_frame->max_ascent + from, | |
748 | current_frame->max_ascent + from + amount, | |
749 | (end - from) * sizeof current_frame->max_ascent[0]); | |
4588ec20 | 750 | } |
fd2e066a | 751 | #endif /* HAVE_WINDOW_SYSTEM */ |
4588ec20 | 752 | |
502b9b64 | 753 | update_end (frame); |
4588ec20 JB |
754 | } |
755 | if (amount < 0) | |
756 | { | |
502b9b64 | 757 | update_begin (frame); |
4588ec20 JB |
758 | set_terminal_window (end); |
759 | ins_del_lines (from + amount, amount); | |
760 | if (!scroll_region_ok) | |
761 | ins_del_lines (end + amount, -amount); | |
762 | set_terminal_window (0); | |
763 | ||
502b9b64 | 764 | rotate_vector (current_frame->glyphs + from + amount, |
4588ec20 JB |
765 | sizeof (GLYPH *) * (end - from - amount), |
766 | amount * sizeof (GLYPH *)); | |
767 | ||
60a8948a | 768 | rotate_vector (current_frame->charstarts + from + amount, |
d52bad65 RS |
769 | sizeof (int *) * (end - from - amount), |
770 | amount * sizeof (int *)); | |
771 | ||
23b0200c RS |
772 | safe_bcopy (current_frame->used + from, |
773 | current_frame->used + from + amount, | |
774 | (end - from) * sizeof current_frame->used[0]); | |
775 | ||
776 | safe_bcopy (current_frame->highlight + from, | |
777 | current_frame->highlight + from + amount, | |
778 | (end - from) * sizeof current_frame->highlight[0]); | |
779 | ||
780 | safe_bcopy (current_frame->enable + from, | |
781 | current_frame->enable + from + amount, | |
782 | (end - from) * sizeof current_frame->enable[0]); | |
783 | ||
d52bad65 RS |
784 | /* Adjust the lines by an amount |
785 | that puts the first of them at NEWPOS. */ | |
23b0200c | 786 | pos_adjust = newpos - current_frame->charstarts[from + amount][0]; |
60a8948a RS |
787 | |
788 | /* Offset each char position in the charstarts lines we moved | |
789 | by pos_adjust. */ | |
790 | for (i = from + amount; i < end + amount; i++) | |
791 | { | |
d52bad65 | 792 | int *line = current_frame->charstarts[i]; |
60a8948a | 793 | int col; |
23b0200c RS |
794 | for (col = 0; col < width; col++) |
795 | if (line[col] > 0) | |
796 | line[col] += pos_adjust; | |
60a8948a | 797 | } |
23b0200c | 798 | for (i = end + amount; i < end; i++) |
60a8948a | 799 | { |
d52bad65 | 800 | int *line = current_frame->charstarts[i]; |
60a8948a RS |
801 | int col; |
802 | line[0] = -1; | |
23b0200c | 803 | for (col = 0; col < width; col++) |
60a8948a RS |
804 | line[col] = 0; |
805 | } | |
806 | ||
4588ec20 JB |
807 | /* Mark the lines made empty by scrolling as enabled, empty and |
808 | normal video. */ | |
502b9b64 JB |
809 | bzero (current_frame->used + end + amount, |
810 | - amount * sizeof current_frame->used[0]); | |
811 | bzero (current_frame->highlight + end + amount, | |
812 | - amount * sizeof current_frame->highlight[0]); | |
4588ec20 JB |
813 | for (i = end + amount; i < end; i++) |
814 | { | |
502b9b64 | 815 | current_frame->glyphs[i][0] = '\0'; |
60a8948a | 816 | current_frame->charstarts[i][0] = 0; |
502b9b64 | 817 | current_frame->enable[i] = 1; |
4588ec20 JB |
818 | } |
819 | ||
502b9b64 JB |
820 | safe_bcopy (current_frame->bufp + from, |
821 | current_frame->bufp + from + amount, | |
822 | (end - from) * sizeof current_frame->bufp[0]); | |
4588ec20 | 823 | |
fd2e066a GV |
824 | #ifdef HAVE_WINDOW_SYSTEM |
825 | if (FRAME_WINDOW_P (frame)) | |
4588ec20 | 826 | { |
502b9b64 JB |
827 | safe_bcopy (current_frame->top_left_x + from, |
828 | current_frame->top_left_x + from + amount, | |
829 | (end - from) * sizeof current_frame->top_left_x[0]); | |
4588ec20 | 830 | |
502b9b64 JB |
831 | safe_bcopy (current_frame->top_left_y + from, |
832 | current_frame->top_left_y + from + amount, | |
833 | (end - from) * sizeof current_frame->top_left_y[0]); | |
4588ec20 | 834 | |
502b9b64 JB |
835 | safe_bcopy (current_frame->pix_width + from, |
836 | current_frame->pix_width + from + amount, | |
837 | (end - from) * sizeof current_frame->pix_width[0]); | |
4588ec20 | 838 | |
502b9b64 JB |
839 | safe_bcopy (current_frame->pix_height + from, |
840 | current_frame->pix_height + from + amount, | |
841 | (end - from) * sizeof current_frame->pix_height[0]); | |
448fd7c0 JA |
842 | |
843 | safe_bcopy (current_frame->max_ascent + from, | |
844 | current_frame->max_ascent + from + amount, | |
845 | (end - from) * sizeof current_frame->max_ascent[0]); | |
4588ec20 | 846 | } |
fd2e066a | 847 | #endif /* HAVE_WINDOW_SYSTEM */ |
4588ec20 | 848 | |
502b9b64 | 849 | update_end (frame); |
4588ec20 JB |
850 | } |
851 | return 1; | |
852 | } | |
853 | \f | |
502b9b64 | 854 | /* After updating a window W that isn't the full frame wide, |
4588ec20 | 855 | copy all the columns that W does not occupy |
502b9b64 JB |
856 | into the FRAME_DESIRED_GLYPHS (frame) from the FRAME_PHYS_GLYPHS (frame) |
857 | so that update_frame will not change those columns. */ | |
4588ec20 JB |
858 | |
859 | preserve_other_columns (w) | |
860 | struct window *w; | |
861 | { | |
862 | register int vpos; | |
502b9b64 JB |
863 | register struct frame_glyphs *current_frame, *desired_frame; |
864 | register FRAME_PTR frame = XFRAME (w->frame); | |
4588ec20 JB |
865 | int start = XFASTINT (w->left); |
866 | int end = XFASTINT (w->left) + XFASTINT (w->width); | |
867 | int bot = XFASTINT (w->top) + XFASTINT (w->height); | |
868 | ||
502b9b64 JB |
869 | current_frame = FRAME_CURRENT_GLYPHS (frame); |
870 | desired_frame = FRAME_DESIRED_GLYPHS (frame); | |
4588ec20 JB |
871 | |
872 | for (vpos = XFASTINT (w->top); vpos < bot; vpos++) | |
873 | { | |
502b9b64 | 874 | if (current_frame->enable[vpos] && desired_frame->enable[vpos]) |
4588ec20 JB |
875 | { |
876 | if (start > 0) | |
877 | { | |
878 | int len; | |
879 | ||
502b9b64 | 880 | bcopy (current_frame->glyphs[vpos], |
aec9f5f6 | 881 | desired_frame->glyphs[vpos], |
4b34bd81 | 882 | start * sizeof (current_frame->glyphs[vpos][0])); |
60a8948a RS |
883 | bcopy (current_frame->charstarts[vpos], |
884 | desired_frame->charstarts[vpos], | |
4b34bd81 | 885 | start * sizeof (current_frame->charstarts[vpos][0])); |
502b9b64 JB |
886 | len = min (start, current_frame->used[vpos]); |
887 | if (desired_frame->used[vpos] < len) | |
888 | desired_frame->used[vpos] = len; | |
4588ec20 | 889 | } |
502b9b64 JB |
890 | if (current_frame->used[vpos] > end |
891 | && desired_frame->used[vpos] < current_frame->used[vpos]) | |
4588ec20 | 892 | { |
502b9b64 | 893 | while (desired_frame->used[vpos] < end) |
60a8948a RS |
894 | { |
895 | int used = desired_frame->used[vpos]++; | |
896 | desired_frame->glyphs[vpos][used] = SPACEGLYPH; | |
897 | desired_frame->glyphs[vpos][used] = 0; | |
898 | } | |
502b9b64 JB |
899 | bcopy (current_frame->glyphs[vpos] + end, |
900 | desired_frame->glyphs[vpos] + end, | |
aec9f5f6 | 901 | ((current_frame->used[vpos] - end) |
4b34bd81 | 902 | * sizeof (current_frame->glyphs[vpos][0]))); |
60a8948a RS |
903 | bcopy (current_frame->charstarts[vpos] + end, |
904 | desired_frame->charstarts[vpos] + end, | |
905 | ((current_frame->used[vpos] - end) | |
4b34bd81 | 906 | * sizeof (current_frame->charstarts[vpos][0]))); |
502b9b64 | 907 | desired_frame->used[vpos] = current_frame->used[vpos]; |
4588ec20 JB |
908 | } |
909 | } | |
910 | } | |
911 | } | |
912 | \f | |
913 | #if 0 | |
914 | ||
502b9b64 | 915 | /* If window w does not need to be updated and isn't the full frame wide, |
4588ec20 | 916 | copy all the columns that w does occupy |
502b9b64 JB |
917 | into the FRAME_DESIRED_LINES (frame) from the FRAME_PHYS_LINES (frame) |
918 | so that update_frame will not change those columns. | |
4588ec20 JB |
919 | |
920 | Have not been able to figure out how to use this correctly. */ | |
921 | ||
922 | preserve_my_columns (w) | |
923 | struct window *w; | |
924 | { | |
925 | register int vpos, fin; | |
502b9b64 JB |
926 | register struct frame_glyphs *l1, *l2; |
927 | register FRAME_PTR frame = XFRAME (w->frame); | |
4588ec20 JB |
928 | int start = XFASTINT (w->left); |
929 | int end = XFASTINT (w->left) + XFASTINT (w->width); | |
930 | int bot = XFASTINT (w->top) + XFASTINT (w->height); | |
931 | ||
932 | for (vpos = XFASTINT (w->top); vpos < bot; vpos++) | |
933 | { | |
502b9b64 JB |
934 | if ((l1 = FRAME_DESIRED_GLYPHS (frame)->glyphs[vpos + 1]) |
935 | && (l2 = FRAME_PHYS_GLYPHS (frame)->glyphs[vpos + 1])) | |
4588ec20 JB |
936 | { |
937 | if (l2->length > start && l1->length < l2->length) | |
938 | { | |
939 | fin = l2->length; | |
940 | if (fin > end) fin = end; | |
941 | while (l1->length < start) | |
942 | l1->body[l1->length++] = ' '; | |
943 | bcopy (l2->body + start, l1->body + start, fin - start); | |
944 | l1->length = fin; | |
945 | } | |
946 | } | |
947 | } | |
948 | } | |
949 | ||
950 | #endif | |
951 | \f | |
b64b3980 | 952 | /* Adjust by ADJUST the charstart values in window W |
23b0200c | 953 | after vpos VPOS, which counts relative to the frame |
b64b3980 RS |
954 | (not relative to W itself). */ |
955 | ||
956 | void | |
957 | adjust_window_charstarts (w, vpos, adjust) | |
958 | struct window *w; | |
959 | int vpos; | |
960 | int adjust; | |
961 | { | |
962 | int left = XFASTINT (w->left); | |
963 | int top = XFASTINT (w->top); | |
23b0200c RS |
964 | int right = left + window_internal_width (w); |
965 | int bottom = top + window_internal_height (w); | |
b64b3980 RS |
966 | int i; |
967 | ||
23b0200c | 968 | for (i = vpos + 1; i < bottom; i++) |
b64b3980 RS |
969 | { |
970 | int *charstart | |
971 | = FRAME_CURRENT_GLYPHS (XFRAME (WINDOW_FRAME (w)))->charstarts[i]; | |
972 | int j; | |
973 | for (j = left; j < right; j++) | |
974 | if (charstart[j] > 0) | |
975 | charstart[j] += adjust; | |
976 | } | |
977 | } | |
23b0200c | 978 | |
352f1545 RS |
979 | /* Check the charstarts values in the area of window W |
980 | for internal consistency. We cannot check that they are "right"; | |
981 | we can only look for something nonsensical. */ | |
982 | ||
23b0200c RS |
983 | verify_charstarts (w) |
984 | struct window *w; | |
985 | { | |
986 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
987 | int i; | |
988 | int top = XFASTINT (w->top); | |
989 | int bottom = top + window_internal_height (w); | |
990 | int left = XFASTINT (w->left); | |
991 | int right = left + window_internal_width (w); | |
992 | int next_line; | |
352f1545 RS |
993 | int truncate = (XINT (w->hscroll) |
994 | || (truncate_partial_width_windows | |
995 | && (XFASTINT (w->width) < FRAME_WIDTH (f))) | |
996 | || !NILP (XBUFFER (w->buffer)->truncate_lines)); | |
23b0200c RS |
997 | |
998 | for (i = top; i < bottom; i++) | |
999 | { | |
1000 | int j; | |
1001 | int last; | |
352f1545 | 1002 | int *charstart = FRAME_CURRENT_GLYPHS (f)->charstarts[i]; |
23b0200c RS |
1003 | |
1004 | if (i != top) | |
352f1545 RS |
1005 | { |
1006 | if (truncate) | |
1007 | { | |
1008 | /* If we are truncating lines, allow a jump | |
1009 | in charstarts from one line to the next. */ | |
1010 | if (charstart[left] < next_line) | |
1011 | abort (); | |
1012 | } | |
1013 | else | |
1014 | { | |
1015 | if (charstart[left] != next_line) | |
1016 | abort (); | |
1017 | } | |
1018 | } | |
23b0200c RS |
1019 | |
1020 | for (j = left; j < right; j++) | |
1021 | if (charstart[j] > 0) | |
1022 | last = charstart[j]; | |
2e8907d3 RS |
1023 | /* Record where the next line should start. */ |
1024 | next_line = last; | |
1025 | if (BUF_ZV (XBUFFER (w->buffer)) != last) | |
1026 | { | |
1027 | /* If there's a newline between the two lines, count that. */ | |
1028 | int endchar = *BUF_CHAR_ADDRESS (XBUFFER (w->buffer), last); | |
1029 | if (endchar == '\n') | |
1030 | next_line++; | |
1031 | } | |
23b0200c RS |
1032 | } |
1033 | } | |
b64b3980 | 1034 | \f |
4588ec20 JB |
1035 | /* On discovering that the redisplay for a window was no good, |
1036 | cancel the columns of that window, so that when the window is | |
1037 | displayed over again get_display_line will not complain. */ | |
1038 | ||
1039 | cancel_my_columns (w) | |
1040 | struct window *w; | |
1041 | { | |
1042 | register int vpos; | |
60a8948a RS |
1043 | register struct frame_glyphs *desired_glyphs |
1044 | = FRAME_DESIRED_GLYPHS (XFRAME (w->frame)); | |
4588ec20 JB |
1045 | register int start = XFASTINT (w->left); |
1046 | register int bot = XFASTINT (w->top) + XFASTINT (w->height); | |
1047 | ||
1048 | for (vpos = XFASTINT (w->top); vpos < bot; vpos++) | |
1049 | if (desired_glyphs->enable[vpos] | |
1050 | && desired_glyphs->used[vpos] >= start) | |
1051 | desired_glyphs->used[vpos] = start; | |
1052 | } | |
1053 | \f | |
502b9b64 | 1054 | /* These functions try to perform directly and immediately on the frame |
4588ec20 JB |
1055 | the necessary output for one change in the buffer. |
1056 | They may return 0 meaning nothing was done if anything is difficult, | |
1057 | or 1 meaning the output was performed properly. | |
502b9b64 | 1058 | They assume that the frame was up to date before the buffer |
94aa5d2d | 1059 | change being displayed. They make various other assumptions too; |
4588ec20 JB |
1060 | see command_loop_1 where these are called. */ |
1061 | ||
1062 | int | |
1063 | direct_output_for_insert (g) | |
1064 | int g; | |
1065 | { | |
502b9b64 JB |
1066 | register FRAME_PTR frame = selected_frame; |
1067 | register struct frame_glyphs *current_frame | |
1068 | = FRAME_CURRENT_GLYPHS (frame); | |
4588ec20 JB |
1069 | |
1070 | #ifndef COMPILER_REGISTER_BUG | |
1071 | register | |
1072 | #endif /* COMPILER_REGISTER_BUG */ | |
1073 | struct window *w = XWINDOW (selected_window); | |
1074 | #ifndef COMPILER_REGISTER_BUG | |
1075 | register | |
1076 | #endif /* COMPILER_REGISTER_BUG */ | |
502b9b64 | 1077 | int hpos = FRAME_CURSOR_X (frame); |
4588ec20 JB |
1078 | #ifndef COMPILER_REGISTER_BUG |
1079 | register | |
1080 | #endif /* COMPILER_REGISTER_BUG */ | |
502b9b64 | 1081 | int vpos = FRAME_CURSOR_Y (frame); |
4588ec20 | 1082 | |
fa61c701 JB |
1083 | /* Give up if about to continue line. */ |
1084 | if (hpos >= XFASTINT (w->left) + window_internal_width (w) - 1 | |
1085 | ||
4588ec20 JB |
1086 | /* Avoid losing if cursor is in invisible text off left margin */ |
1087 | || (XINT (w->hscroll) && hpos == XFASTINT (w->left)) | |
1088 | ||
1089 | /* Give up if cursor outside window (in minibuf, probably) */ | |
648fa17d | 1090 | || cursor_in_echo_area |
502b9b64 JB |
1091 | || FRAME_CURSOR_Y (frame) < XFASTINT (w->top) |
1092 | || FRAME_CURSOR_Y (frame) >= XFASTINT (w->top) + XFASTINT (w->height) | |
4588ec20 | 1093 | |
502b9b64 | 1094 | /* Give up if cursor not really at FRAME_CURSOR_X, FRAME_CURSOR_Y */ |
4588ec20 JB |
1095 | || !display_completed |
1096 | ||
1097 | /* Give up if buffer appears in two places. */ | |
1098 | || buffer_shared > 1 | |
1099 | ||
d169fe39 RS |
1100 | #ifdef USE_TEXT_PROPERTIES |
1101 | /* Intervals have already been adjusted, point is after the | |
1102 | character that was just inserted. */ | |
ef4d2f9e | 1103 | /* Give up if character is invisible. */ |
d169fe39 RS |
1104 | /* Give up if character has a face property. |
1105 | At the moment we only lose at end of line or end of buffer | |
1106 | and only with faces that have some background */ | |
1107 | /* Instead of wasting time, give up if character has any text properties */ | |
254277e1 | 1108 | || ! NILP (Ftext_properties_at (make_number (point - 1), Qnil)) |
d169fe39 RS |
1109 | #endif |
1110 | ||
4588ec20 JB |
1111 | /* Give up if w is minibuffer and a message is being displayed there */ |
1112 | || (MINI_WINDOW_P (w) && echo_area_glyphs)) | |
1113 | return 0; | |
1114 | ||
517b2e01 | 1115 | { |
19dff8dc | 1116 | int face = 0; |
87485d6f | 1117 | #ifdef HAVE_FACES |
517b2e01 | 1118 | int dummy; |
19dff8dc | 1119 | |
fd2e066a | 1120 | if (FRAME_WINDOW_P (frame)) |
ea62c5a5 | 1121 | face = compute_char_face (frame, w, point - 1, -1, -1, &dummy, point, 0); |
517b2e01 | 1122 | #endif |
a1c3de84 | 1123 | current_frame->glyphs[vpos][hpos] = MAKE_GLYPH (frame, g, face); |
839c7dfb RS |
1124 | current_frame->charstarts[vpos][hpos] = point - 1; |
1125 | /* Record the entry for after the newly inserted character. */ | |
1126 | current_frame->charstarts[vpos][hpos + 1] = point; | |
b64b3980 | 1127 | adjust_window_charstarts (w, vpos, 1); |
517b2e01 | 1128 | } |
4588ec20 JB |
1129 | unchanged_modified = MODIFF; |
1130 | beg_unchanged = GPT - BEG; | |
a5d8b611 KH |
1131 | XSETFASTINT (w->last_point, point); |
1132 | XSETFASTINT (w->last_point_x, hpos); | |
1133 | XSETFASTINT (w->last_modified, MODIFF); | |
4588ec20 JB |
1134 | |
1135 | reassert_line_highlight (0, vpos); | |
502b9b64 | 1136 | write_glyphs (¤t_frame->glyphs[vpos][hpos], 1); |
4588ec20 | 1137 | fflush (stdout); |
502b9b64 JB |
1138 | ++FRAME_CURSOR_X (frame); |
1139 | if (hpos == current_frame->used[vpos]) | |
4588ec20 | 1140 | { |
502b9b64 JB |
1141 | current_frame->used[vpos] = hpos + 1; |
1142 | current_frame->glyphs[vpos][hpos + 1] = 0; | |
4588ec20 JB |
1143 | } |
1144 | ||
1145 | return 1; | |
1146 | } | |
1147 | ||
1148 | int | |
1149 | direct_output_forward_char (n) | |
1150 | int n; | |
1151 | { | |
502b9b64 | 1152 | register FRAME_PTR frame = selected_frame; |
4588ec20 | 1153 | register struct window *w = XWINDOW (selected_window); |
254277e1 | 1154 | Lisp_Object position; |
ea0d86af RS |
1155 | int hpos = FRAME_CURSOR_X (frame); |
1156 | ||
1157 | /* Give up if in truncated text at end of line. */ | |
1158 | if (hpos >= XFASTINT (w->left) + window_internal_width (w) - 1) | |
1159 | return 0; | |
1160 | ||
a9764248 JB |
1161 | /* Avoid losing if cursor is in invisible text off left margin |
1162 | or about to go off either side of window. */ | |
502b9b64 | 1163 | if ((FRAME_CURSOR_X (frame) == XFASTINT (w->left) |
a9764248 JB |
1164 | && (XINT (w->hscroll) || n < 0)) |
1165 | || (n > 0 | |
fa61c701 | 1166 | && (FRAME_CURSOR_X (frame) + 1 >= window_internal_width (w) - 1)) |
648fa17d | 1167 | || cursor_in_echo_area) |
4588ec20 | 1168 | return 0; |
15874c59 | 1169 | |
de83c314 RS |
1170 | /* Can't use direct output if highlighting a region. */ |
1171 | if (!NILP (Vtransient_mark_mode) && !NILP (current_buffer->mark_active)) | |
1172 | return 0; | |
1173 | ||
15874c59 KH |
1174 | /* Can't use direct output at an overlay boundary; it might have |
1175 | before-string or after-string properties. */ | |
1176 | if (overlay_touches_p (PT) || overlay_touches_p (PT - n)) | |
1177 | return 0; | |
1178 | ||
d169fe39 RS |
1179 | #ifdef USE_TEXT_PROPERTIES |
1180 | /* Don't use direct output next to an invisible character | |
1181 | since we might need to do something special. */ | |
1182 | ||
a5d8b611 | 1183 | XSETFASTINT (position, point); |
2f24f5ac | 1184 | if (XFASTINT (position) < ZV |
294634fb | 1185 | && ! NILP (Fget_char_property (position, |
2f24f5ac | 1186 | Qinvisible, |
294634fb KH |
1187 | selected_window))) |
1188 | return 0; | |
d169fe39 | 1189 | |
a5d8b611 | 1190 | XSETFASTINT (position, point - 1); |
2f24f5ac | 1191 | if (XFASTINT (position) >= BEGV |
294634fb | 1192 | && ! NILP (Fget_char_property (position, |
2f24f5ac | 1193 | Qinvisible, |
294634fb KH |
1194 | selected_window))) |
1195 | return 0; | |
d169fe39 RS |
1196 | #endif |
1197 | ||
502b9b64 | 1198 | FRAME_CURSOR_X (frame) += n; |
a5d8b611 KH |
1199 | XSETFASTINT (w->last_point_x, FRAME_CURSOR_X (frame)); |
1200 | XSETFASTINT (w->last_point, point); | |
502b9b64 | 1201 | cursor_to (FRAME_CURSOR_Y (frame), FRAME_CURSOR_X (frame)); |
4588ec20 | 1202 | fflush (stdout); |
d169fe39 | 1203 | |
4588ec20 JB |
1204 | return 1; |
1205 | } | |
1206 | \f | |
1207 | static void update_line (); | |
1208 | ||
502b9b64 | 1209 | /* Update frame F based on the data in FRAME_DESIRED_GLYPHS. |
4588ec20 JB |
1210 | Value is nonzero if redisplay stopped due to pending input. |
1211 | FORCE nonzero means do not stop for pending input. */ | |
1212 | ||
1213 | int | |
502b9b64 JB |
1214 | update_frame (f, force, inhibit_hairy_id) |
1215 | FRAME_PTR f; | |
4588ec20 JB |
1216 | int force; |
1217 | int inhibit_hairy_id; | |
1218 | { | |
54633da0 | 1219 | register struct frame_glyphs *current_frame; |
7098a0fa | 1220 | register struct frame_glyphs *desired_frame = 0; |
4588ec20 JB |
1221 | register int i; |
1222 | int pause; | |
1223 | int preempt_count = baud_rate / 2400 + 1; | |
1224 | extern input_pending; | |
fd2e066a | 1225 | #ifdef HAVE_WINDOW_SYSTEM |
4588ec20 JB |
1226 | register int downto, leftmost; |
1227 | #endif | |
1228 | ||
c37e4889 RS |
1229 | if (baud_rate != FRAME_COST_BAUD_RATE (f)) |
1230 | calculate_costs (f); | |
1231 | ||
d88c2b9e RS |
1232 | if (preempt_count <= 0) |
1233 | preempt_count = 1; | |
1234 | ||
502b9b64 | 1235 | if (FRAME_HEIGHT (f) == 0) abort (); /* Some bug zeros some core */ |
4588ec20 JB |
1236 | |
1237 | detect_input_pending (); | |
1238 | if (input_pending && !force) | |
1239 | { | |
1240 | pause = 1; | |
1241 | goto do_pause; | |
1242 | } | |
1243 | ||
502b9b64 | 1244 | update_begin (f); |
4588ec20 JB |
1245 | |
1246 | if (!line_ins_del_ok) | |
1247 | inhibit_hairy_id = 1; | |
1248 | ||
7098a0fa RS |
1249 | /* These are separate to avoid a possible bug in the AIX C compiler. */ |
1250 | current_frame = FRAME_CURRENT_GLYPHS (f); | |
1251 | desired_frame = FRAME_DESIRED_GLYPHS (f); | |
1252 | ||
efb859b4 JB |
1253 | /* See if any of the desired lines are enabled; don't compute for |
1254 | i/d line if just want cursor motion. */ | |
502b9b64 JB |
1255 | for (i = 0; i < FRAME_HEIGHT (f); i++) |
1256 | if (desired_frame->enable[i]) | |
4588ec20 JB |
1257 | break; |
1258 | ||
1259 | /* Try doing i/d line, if not yet inhibited. */ | |
502b9b64 JB |
1260 | if (!inhibit_hairy_id && i < FRAME_HEIGHT (f)) |
1261 | force |= scrolling (f); | |
4588ec20 JB |
1262 | |
1263 | /* Update the individual lines as needed. Do bottom line first. */ | |
1264 | ||
502b9b64 JB |
1265 | if (desired_frame->enable[FRAME_HEIGHT (f) - 1]) |
1266 | update_line (f, FRAME_HEIGHT (f) - 1); | |
4588ec20 | 1267 | |
fd2e066a GV |
1268 | #ifdef HAVE_WINDOW_SYSTEM |
1269 | if (FRAME_WINDOW_P (f)) | |
4588ec20 | 1270 | { |
fd2e066a | 1271 | leftmost = downto = FRAME_INTERNAL_BORDER_WIDTH (f); |
502b9b64 | 1272 | if (desired_frame->enable[0]) |
4588ec20 | 1273 | { |
502b9b64 JB |
1274 | current_frame->top_left_x[FRAME_HEIGHT (f) - 1] = leftmost; |
1275 | current_frame->top_left_y[FRAME_HEIGHT (f) - 1] | |
fd2e066a | 1276 | = PIXEL_HEIGHT (f) - FRAME_INTERNAL_BORDER_WIDTH (f) |
448fd7c0 | 1277 | - current_frame->pix_height[FRAME_HEIGHT (f) - 1]; |
502b9b64 JB |
1278 | current_frame->top_left_x[0] = leftmost; |
1279 | current_frame->top_left_y[0] = downto; | |
4588ec20 JB |
1280 | } |
1281 | } | |
fd2e066a | 1282 | #endif /* HAVE_WINDOW_SYSTEM */ |
4588ec20 JB |
1283 | |
1284 | /* Now update the rest of the lines. */ | |
502b9b64 | 1285 | for (i = 0; i < FRAME_HEIGHT (f) - 1 && (force || !input_pending); i++) |
4588ec20 | 1286 | { |
502b9b64 | 1287 | if (desired_frame->enable[i]) |
4588ec20 | 1288 | { |
b6a65ac2 | 1289 | if (FRAME_TERMCAP_P (f)) |
4588ec20 JB |
1290 | { |
1291 | /* Flush out every so many lines. | |
1292 | Also flush out if likely to have more than 1k buffered | |
1293 | otherwise. I'm told that some telnet connections get | |
1294 | really screwed by more than 1k output at once. */ | |
1295 | int outq = PENDING_OUTPUT_COUNT (stdout); | |
1296 | if (outq > 900 | |
1297 | || (outq > 20 && ((i - 1) % preempt_count == 0))) | |
1298 | { | |
1299 | fflush (stdout); | |
1300 | if (preempt_count == 1) | |
1301 | { | |
a41f8bed JB |
1302 | #ifdef EMACS_OUTQSIZE |
1303 | if (EMACS_OUTQSIZE (0, &outq) < 0) | |
4588ec20 JB |
1304 | /* Probably not a tty. Ignore the error and reset |
1305 | * the outq count. */ | |
1306 | outq = PENDING_OUTPUT_COUNT (stdout); | |
1307 | #endif | |
1308 | outq *= 10; | |
d520f0d2 | 1309 | if (baud_rate <= outq && baud_rate > 0) |
d88c2b9e | 1310 | sleep (outq / baud_rate); |
4588ec20 JB |
1311 | } |
1312 | } | |
1313 | if ((i - 1) % preempt_count == 0) | |
1314 | detect_input_pending (); | |
1315 | } | |
1316 | ||
502b9b64 | 1317 | update_line (f, i); |
fd2e066a GV |
1318 | #ifdef HAVE_WINDOW_SYSTEM |
1319 | if (FRAME_WINDOW_P (f)) | |
4588ec20 | 1320 | { |
502b9b64 JB |
1321 | current_frame->top_left_y[i] = downto; |
1322 | current_frame->top_left_x[i] = leftmost; | |
4588ec20 | 1323 | } |
fd2e066a | 1324 | #endif /* HAVE_WINDOW_SYSTEM */ |
4588ec20 JB |
1325 | } |
1326 | ||
fd2e066a GV |
1327 | #ifdef HAVE_WINDOW_SYSTEM |
1328 | if (FRAME_WINDOW_P (f)) | |
448fd7c0 | 1329 | downto += current_frame->pix_height[i]; |
fd2e066a | 1330 | #endif /* HAVE_WINDOW_SYSTEM */ |
4588ec20 | 1331 | } |
502b9b64 | 1332 | pause = (i < FRAME_HEIGHT (f) - 1) ? i : 0; |
4588ec20 JB |
1333 | |
1334 | /* Now just clean up termcap drivers and set cursor, etc. */ | |
1335 | if (!pause) | |
1336 | { | |
48cf7030 | 1337 | if ((cursor_in_echo_area |
2577053b RS |
1338 | /* If we are showing a message instead of the minibuffer, |
1339 | show the cursor for the message instead of for the | |
1340 | (now hidden) minibuffer contents. */ | |
1341 | || (EQ (minibuf_window, selected_window) | |
1342 | && EQ (minibuf_window, echo_area_window) | |
1343 | && echo_area_glyphs != 0)) | |
1344 | /* These cases apply only to the frame that contains | |
1345 | the active minibuffer window. */ | |
1346 | && FRAME_HAS_MINIBUF_P (f) | |
140f8645 | 1347 | && EQ (FRAME_MINIBUF_WINDOW (f), echo_area_window)) |
1113d9db | 1348 | { |
648fa17d JB |
1349 | int top = XINT (XWINDOW (FRAME_MINIBUF_WINDOW (f))->top); |
1350 | int row, col; | |
1351 | ||
1352 | if (cursor_in_echo_area < 0) | |
1353 | { | |
1354 | row = top; | |
1355 | col = 0; | |
1356 | } | |
1113d9db | 1357 | else |
648fa17d JB |
1358 | { |
1359 | /* If the minibuffer is several lines high, find the last | |
1360 | line that has any text on it. */ | |
1361 | row = FRAME_HEIGHT (f); | |
1362 | do | |
1363 | { | |
1364 | row--; | |
1365 | if (current_frame->enable[row]) | |
1366 | col = current_frame->used[row]; | |
1367 | else | |
1368 | col = 0; | |
1369 | } | |
1370 | while (row > top && col == 0); | |
1371 | ||
1372 | if (col >= FRAME_WIDTH (f)) | |
1373 | { | |
1374 | col = 0; | |
1375 | if (row < FRAME_HEIGHT (f) - 1) | |
1376 | row++; | |
1377 | } | |
1378 | } | |
1379 | ||
1380 | cursor_to (row, col); | |
1113d9db | 1381 | } |
4588ec20 | 1382 | else |
502b9b64 JB |
1383 | cursor_to (FRAME_CURSOR_Y (f), max (min (FRAME_CURSOR_X (f), |
1384 | FRAME_WIDTH (f) - 1), 0)); | |
4588ec20 JB |
1385 | } |
1386 | ||
502b9b64 | 1387 | update_end (f); |
4588ec20 JB |
1388 | |
1389 | if (termscript) | |
1390 | fflush (termscript); | |
1391 | fflush (stdout); | |
1392 | ||
1393 | /* Here if output is preempted because input is detected. */ | |
1394 | do_pause: | |
1395 | ||
502b9b64 | 1396 | if (FRAME_HEIGHT (f) == 0) abort (); /* Some bug zeros some core */ |
4588ec20 JB |
1397 | display_completed = !pause; |
1398 | ||
f5843453 | 1399 | bzero (FRAME_DESIRED_GLYPHS (f)->enable, FRAME_HEIGHT (f)); |
4588ec20 JB |
1400 | return pause; |
1401 | } | |
1402 | ||
1403 | /* Called when about to quit, to check for doing so | |
1404 | at an improper time. */ | |
1405 | ||
1406 | void | |
1407 | quit_error_check () | |
1408 | { | |
1c78509b | 1409 | #if 0 |
502b9b64 | 1410 | if (FRAME_DESIRED_GLYPHS (selected_frame) == 0) |
4588ec20 | 1411 | return; |
502b9b64 | 1412 | if (FRAME_DESIRED_GLYPHS (selected_frame)->enable[0]) |
4588ec20 | 1413 | abort (); |
502b9b64 | 1414 | if (FRAME_DESIRED_GLYPHS (selected_frame)->enable[FRAME_HEIGHT (selected_frame) - 1]) |
4588ec20 | 1415 | abort (); |
1c78509b | 1416 | #endif |
4588ec20 JB |
1417 | } |
1418 | \f | |
1419 | /* Decide what insert/delete line to do, and do it */ | |
1420 | ||
1421 | extern void scrolling_1 (); | |
1422 | ||
502b9b64 JB |
1423 | scrolling (frame) |
1424 | FRAME_PTR frame; | |
4588ec20 JB |
1425 | { |
1426 | int unchanged_at_top, unchanged_at_bottom; | |
1427 | int window_size; | |
1428 | int changed_lines; | |
502b9b64 JB |
1429 | int *old_hash = (int *) alloca (FRAME_HEIGHT (frame) * sizeof (int)); |
1430 | int *new_hash = (int *) alloca (FRAME_HEIGHT (frame) * sizeof (int)); | |
1431 | int *draw_cost = (int *) alloca (FRAME_HEIGHT (frame) * sizeof (int)); | |
190bb91a | 1432 | int *old_draw_cost = (int *) alloca (FRAME_HEIGHT (frame) * sizeof (int)); |
4588ec20 | 1433 | register int i; |
502b9b64 JB |
1434 | int free_at_end_vpos = FRAME_HEIGHT (frame); |
1435 | register struct frame_glyphs *current_frame = FRAME_CURRENT_GLYPHS (frame); | |
1436 | register struct frame_glyphs *desired_frame = FRAME_DESIRED_GLYPHS (frame); | |
4588ec20 JB |
1437 | |
1438 | /* Compute hash codes of all the lines. | |
1439 | Also calculate number of changed lines, | |
1440 | number of unchanged lines at the beginning, | |
1441 | and number of unchanged lines at the end. */ | |
1442 | ||
1443 | changed_lines = 0; | |
1444 | unchanged_at_top = 0; | |
502b9b64 JB |
1445 | unchanged_at_bottom = FRAME_HEIGHT (frame); |
1446 | for (i = 0; i < FRAME_HEIGHT (frame); i++) | |
4588ec20 JB |
1447 | { |
1448 | /* Give up on this scrolling if some old lines are not enabled. */ | |
502b9b64 | 1449 | if (!current_frame->enable[i]) |
4588ec20 | 1450 | return 0; |
502b9b64 JB |
1451 | old_hash[i] = line_hash_code (current_frame, i); |
1452 | if (! desired_frame->enable[i]) | |
4588ec20 JB |
1453 | new_hash[i] = old_hash[i]; |
1454 | else | |
502b9b64 | 1455 | new_hash[i] = line_hash_code (desired_frame, i); |
4588ec20 JB |
1456 | |
1457 | if (old_hash[i] != new_hash[i]) | |
1458 | { | |
1459 | changed_lines++; | |
502b9b64 | 1460 | unchanged_at_bottom = FRAME_HEIGHT (frame) - i - 1; |
4588ec20 JB |
1461 | } |
1462 | else if (i == unchanged_at_top) | |
1463 | unchanged_at_top++; | |
502b9b64 | 1464 | draw_cost[i] = line_draw_cost (desired_frame, i); |
190bb91a | 1465 | old_draw_cost[i] = line_draw_cost (current_frame, i); |
4588ec20 JB |
1466 | } |
1467 | ||
1468 | /* If changed lines are few, don't allow preemption, don't scroll. */ | |
190bb91a | 1469 | if (!scroll_region_ok && changed_lines < baud_rate / 2400 |
502b9b64 | 1470 | || unchanged_at_bottom == FRAME_HEIGHT (frame)) |
4588ec20 JB |
1471 | return 1; |
1472 | ||
502b9b64 | 1473 | window_size = (FRAME_HEIGHT (frame) - unchanged_at_top |
4588ec20 JB |
1474 | - unchanged_at_bottom); |
1475 | ||
1476 | if (scroll_region_ok) | |
1477 | free_at_end_vpos -= unchanged_at_bottom; | |
502b9b64 | 1478 | else if (memory_below_frame) |
4588ec20 JB |
1479 | free_at_end_vpos = -1; |
1480 | ||
1481 | /* If large window, fast terminal and few lines in common between | |
502b9b64 | 1482 | current frame and desired frame, don't bother with i/d calc. */ |
190bb91a | 1483 | if (!scroll_region_ok && window_size >= 18 && baud_rate > 2400 |
4588ec20 JB |
1484 | && (window_size >= |
1485 | 10 * scrolling_max_lines_saved (unchanged_at_top, | |
502b9b64 | 1486 | FRAME_HEIGHT (frame) - unchanged_at_bottom, |
4588ec20 JB |
1487 | old_hash, new_hash, draw_cost))) |
1488 | return 0; | |
1489 | ||
502b9b64 | 1490 | scrolling_1 (frame, window_size, unchanged_at_top, unchanged_at_bottom, |
4588ec20 | 1491 | draw_cost + unchanged_at_top - 1, |
190bb91a | 1492 | old_draw_cost + unchanged_at_top - 1, |
4588ec20 JB |
1493 | old_hash + unchanged_at_top - 1, |
1494 | new_hash + unchanged_at_top - 1, | |
1495 | free_at_end_vpos - unchanged_at_top); | |
1496 | ||
1497 | return 0; | |
1498 | } | |
1499 | \f | |
1500 | /* Return the offset in its buffer of the character at location col, line | |
1501 | in the given window. */ | |
1502 | int | |
1503 | buffer_posn_from_coords (window, col, line) | |
1504 | struct window *window; | |
1505 | int col, line; | |
1506 | { | |
ef0fdbb1 | 1507 | int hscroll = XINT (window->hscroll); |
4588ec20 JB |
1508 | int window_left = XFASTINT (window->left); |
1509 | ||
1510 | /* The actual width of the window is window->width less one for the | |
efb859b4 JB |
1511 | DISP_CONTINUE_GLYPH, and less one if it's not the rightmost |
1512 | window. */ | |
fa61c701 | 1513 | int window_width = window_internal_width (window) - 1; |
4588ec20 | 1514 | |
efb859b4 | 1515 | int startp = marker_position (window->start); |
4588ec20 JB |
1516 | |
1517 | /* Since compute_motion will only operate on the current buffer, | |
1518 | we need to save the old one and restore it when we're done. */ | |
1519 | struct buffer *old_current_buffer = current_buffer; | |
efb859b4 | 1520 | struct position *posn; |
4588ec20 JB |
1521 | |
1522 | current_buffer = XBUFFER (window->buffer); | |
1523 | ||
2ba9ed58 KH |
1524 | /* We can't get a correct result in this case, |
1525 | but at least prevent compute_motion from crashing. */ | |
1526 | if (startp < BEGV) | |
1527 | startp = BEGV; | |
1528 | ||
502b9b64 JB |
1529 | /* It would be nice if we could use FRAME_CURRENT_GLYPHS (XFRAME |
1530 | (window->frame))->bufp to avoid scanning from the very top of | |
efb859b4 JB |
1531 | the window, but it isn't maintained correctly, and I'm not even |
1532 | sure I will keep it. */ | |
1533 | posn = compute_motion (startp, 0, | |
94129385 KH |
1534 | ((window == XWINDOW (minibuf_window) && startp == BEG |
1535 | ? minibuf_prompt_width : 0) | |
1536 | + (hscroll ? 1 - hscroll : 0)), | |
1537 | 0, | |
fb0f454a | 1538 | ZV, line, col, |
e37f06d7 | 1539 | window_width, hscroll, 0, window); |
4588ec20 JB |
1540 | |
1541 | current_buffer = old_current_buffer; | |
1542 | ||
502b9b64 | 1543 | /* compute_motion considers frame points past the end of a line |
efb859b4 JB |
1544 | to be *after* the newline, i.e. at the start of the next line. |
1545 | This is reasonable, but not really what we want. So if the | |
1546 | result is on a line below LINE, back it up one character. */ | |
1547 | if (posn->vpos > line) | |
1548 | return posn->bufpos - 1; | |
1549 | else | |
1550 | return posn->bufpos; | |
4588ec20 JB |
1551 | } |
1552 | \f | |
1553 | static int | |
1554 | count_blanks (r) | |
1555 | register GLYPH *r; | |
1556 | { | |
1557 | register GLYPH *p = r; | |
94aa5d2d RS |
1558 | while (*p++ == SPACEGLYPH); |
1559 | return p - r - 1; | |
4588ec20 JB |
1560 | } |
1561 | ||
1562 | static int | |
1563 | count_match (str1, str2) | |
1564 | GLYPH *str1, *str2; | |
1565 | { | |
1566 | register GLYPH *p1 = str1; | |
1567 | register GLYPH *p2 = str2; | |
1568 | while (*p1++ == *p2++); | |
1569 | return p1 - str1 - 1; | |
1570 | } | |
1571 | ||
1572 | /* Char insertion/deletion cost vector, from term.c */ | |
1573 | extern int *char_ins_del_vector; | |
1574 | ||
945807a3 | 1575 | #define char_ins_del_cost(f) (&char_ins_del_vector[FRAME_WIDTH((f))]) |
4588ec20 JB |
1576 | |
1577 | static void | |
502b9b64 JB |
1578 | update_line (frame, vpos) |
1579 | register FRAME_PTR frame; | |
4588ec20 JB |
1580 | int vpos; |
1581 | { | |
1582 | register GLYPH *obody, *nbody, *op1, *op2, *np1, *temp; | |
60a8948a | 1583 | int *temp1; |
4588ec20 JB |
1584 | int tem; |
1585 | int osp, nsp, begmatch, endmatch, olen, nlen; | |
1586 | int save; | |
502b9b64 JB |
1587 | register struct frame_glyphs *current_frame |
1588 | = FRAME_CURRENT_GLYPHS (frame); | |
1589 | register struct frame_glyphs *desired_frame | |
1590 | = FRAME_DESIRED_GLYPHS (frame); | |
4588ec20 | 1591 | |
502b9b64 JB |
1592 | if (desired_frame->highlight[vpos] |
1593 | != (current_frame->enable[vpos] && current_frame->highlight[vpos])) | |
4588ec20 | 1594 | { |
502b9b64 JB |
1595 | change_line_highlight (desired_frame->highlight[vpos], vpos, |
1596 | (current_frame->enable[vpos] ? | |
1597 | current_frame->used[vpos] : 0)); | |
1598 | current_frame->enable[vpos] = 0; | |
4588ec20 JB |
1599 | } |
1600 | else | |
502b9b64 | 1601 | reassert_line_highlight (desired_frame->highlight[vpos], vpos); |
4588ec20 | 1602 | |
502b9b64 | 1603 | if (! current_frame->enable[vpos]) |
4588ec20 JB |
1604 | { |
1605 | olen = 0; | |
1606 | } | |
1607 | else | |
1608 | { | |
502b9b64 JB |
1609 | obody = current_frame->glyphs[vpos]; |
1610 | olen = current_frame->used[vpos]; | |
1611 | if (! current_frame->highlight[vpos]) | |
4588ec20 JB |
1612 | { |
1613 | if (!must_write_spaces) | |
ed874011 | 1614 | while (olen > 0 && obody[olen - 1] == SPACEGLYPH) |
4588ec20 JB |
1615 | olen--; |
1616 | } | |
1617 | else | |
1618 | { | |
1619 | /* For an inverse-video line, remember we gave it | |
502b9b64 | 1620 | spaces all the way to the frame edge |
4588ec20 JB |
1621 | so that the reverse video extends all the way across. */ |
1622 | ||
502b9b64 | 1623 | while (olen < FRAME_WIDTH (frame) - 1) |
4588ec20 JB |
1624 | obody[olen++] = SPACEGLYPH; |
1625 | } | |
1626 | } | |
1627 | ||
1628 | /* One way or another, this will enable the line being updated. */ | |
502b9b64 JB |
1629 | current_frame->enable[vpos] = 1; |
1630 | current_frame->used[vpos] = desired_frame->used[vpos]; | |
1631 | current_frame->highlight[vpos] = desired_frame->highlight[vpos]; | |
1632 | current_frame->bufp[vpos] = desired_frame->bufp[vpos]; | |
4588ec20 | 1633 | |
fd2e066a GV |
1634 | #ifdef HAVE_WINDOW_SYSTEM |
1635 | if (FRAME_WINDOW_P (frame)) | |
4588ec20 | 1636 | { |
502b9b64 JB |
1637 | current_frame->pix_width[vpos] |
1638 | = current_frame->used[vpos] | |
fd2e066a | 1639 | * FONT_WIDTH (FRAME_FONT (frame)); |
502b9b64 | 1640 | current_frame->pix_height[vpos] |
fd2e066a | 1641 | = FRAME_LINE_HEIGHT (frame); |
4588ec20 | 1642 | } |
fd2e066a | 1643 | #endif /* HAVE_WINDOW_SYSTEM */ |
4588ec20 | 1644 | |
502b9b64 | 1645 | if (!desired_frame->enable[vpos]) |
4588ec20 JB |
1646 | { |
1647 | nlen = 0; | |
1648 | goto just_erase; | |
1649 | } | |
1650 | ||
502b9b64 JB |
1651 | nbody = desired_frame->glyphs[vpos]; |
1652 | nlen = desired_frame->used[vpos]; | |
4588ec20 JB |
1653 | |
1654 | /* Pretend trailing spaces are not there at all, | |
1655 | unless for one reason or another we must write all spaces. */ | |
502b9b64 | 1656 | if (! desired_frame->highlight[vpos]) |
4588ec20 JB |
1657 | { |
1658 | if (!must_write_spaces) | |
1659 | /* We know that the previous character byte contains 0. */ | |
1660 | while (nbody[nlen - 1] == SPACEGLYPH) | |
1661 | nlen--; | |
1662 | } | |
1663 | else | |
1664 | { | |
1665 | /* For an inverse-video line, give it extra trailing spaces | |
502b9b64 | 1666 | all the way to the frame edge |
4588ec20 JB |
1667 | so that the reverse video extends all the way across. */ |
1668 | ||
502b9b64 | 1669 | while (nlen < FRAME_WIDTH (frame) - 1) |
4588ec20 JB |
1670 | nbody[nlen++] = SPACEGLYPH; |
1671 | } | |
1672 | ||
1673 | /* If there's no i/d char, quickly do the best we can without it. */ | |
1674 | if (!char_ins_del_ok) | |
1675 | { | |
1676 | int i,j; | |
1677 | ||
76426794 RS |
1678 | #if 0 |
1679 | if (FRAME_X_P (frame)) | |
1680 | { | |
1681 | /* Under X, erase everything we are going to rewrite, | |
1682 | and rewrite everything from the first char that's changed. | |
1683 | This is part of supporting fonts like Courier | |
1684 | whose chars can overlap outside the char width. */ | |
1685 | for (i = 0; i < nlen; i++) | |
1686 | if (i >= olen || nbody[i] != obody[i]) | |
1687 | break; | |
1688 | ||
1689 | cursor_to (vpos, i); | |
1690 | if (i != olen) | |
1691 | clear_end_of_line (olen); | |
1692 | write_glyphs (nbody + i, nlen - i); | |
1693 | } | |
1694 | else | |
1695 | {} | |
1696 | #endif /* 0 */ | |
4588ec20 JB |
1697 | for (i = 0; i < nlen; i++) |
1698 | { | |
1699 | if (i >= olen || nbody[i] != obody[i]) /* A non-matching char. */ | |
1700 | { | |
1701 | cursor_to (vpos, i); | |
1702 | for (j = 1; (i + j < nlen && | |
1703 | (i + j >= olen || nbody[i+j] != obody[i+j])); | |
1704 | j++); | |
1705 | ||
1706 | /* Output this run of non-matching chars. */ | |
1707 | write_glyphs (nbody + i, j); | |
1708 | i += j - 1; | |
1709 | ||
1710 | /* Now find the next non-match. */ | |
1711 | } | |
1712 | } | |
1713 | ||
1714 | /* Clear the rest of the line, or the non-clear part of it. */ | |
1715 | if (olen > nlen) | |
1716 | { | |
1717 | cursor_to (vpos, nlen); | |
1718 | clear_end_of_line (olen); | |
1719 | } | |
1720 | ||
502b9b64 JB |
1721 | /* Exchange contents between current_frame and new_frame. */ |
1722 | temp = desired_frame->glyphs[vpos]; | |
1723 | desired_frame->glyphs[vpos] = current_frame->glyphs[vpos]; | |
1724 | current_frame->glyphs[vpos] = temp; | |
4588ec20 | 1725 | |
60a8948a RS |
1726 | /* Exchange charstarts between current_frame and new_frame. */ |
1727 | temp1 = desired_frame->charstarts[vpos]; | |
1728 | desired_frame->charstarts[vpos] = current_frame->charstarts[vpos]; | |
1729 | current_frame->charstarts[vpos] = temp1; | |
1730 | ||
4588ec20 JB |
1731 | return; |
1732 | } | |
1733 | ||
1734 | if (!olen) | |
1735 | { | |
502b9b64 | 1736 | nsp = (must_write_spaces || desired_frame->highlight[vpos]) |
4588ec20 JB |
1737 | ? 0 : count_blanks (nbody); |
1738 | if (nlen > nsp) | |
1739 | { | |
1740 | cursor_to (vpos, nsp); | |
1741 | write_glyphs (nbody + nsp, nlen - nsp); | |
1742 | } | |
1743 | ||
502b9b64 JB |
1744 | /* Exchange contents between current_frame and new_frame. */ |
1745 | temp = desired_frame->glyphs[vpos]; | |
1746 | desired_frame->glyphs[vpos] = current_frame->glyphs[vpos]; | |
1747 | current_frame->glyphs[vpos] = temp; | |
4588ec20 | 1748 | |
60a8948a RS |
1749 | /* Exchange charstarts between current_frame and new_frame. */ |
1750 | temp1 = desired_frame->charstarts[vpos]; | |
1751 | desired_frame->charstarts[vpos] = current_frame->charstarts[vpos]; | |
1752 | current_frame->charstarts[vpos] = temp1; | |
1753 | ||
4588ec20 JB |
1754 | return; |
1755 | } | |
1756 | ||
1757 | obody[olen] = 1; | |
1758 | save = nbody[nlen]; | |
1759 | nbody[nlen] = 0; | |
1760 | ||
1761 | /* Compute number of leading blanks in old and new contents. */ | |
1762 | osp = count_blanks (obody); | |
502b9b64 | 1763 | if (!desired_frame->highlight[vpos]) |
4588ec20 JB |
1764 | nsp = count_blanks (nbody); |
1765 | else | |
1766 | nsp = 0; | |
1767 | ||
1768 | /* Compute number of matching chars starting with first nonblank. */ | |
1769 | begmatch = count_match (obody + osp, nbody + nsp); | |
1770 | ||
1771 | /* Spaces in new match implicit space past the end of old. */ | |
1772 | /* A bug causing this to be a no-op was fixed in 18.29. */ | |
1773 | if (!must_write_spaces && osp + begmatch == olen) | |
1774 | { | |
1775 | np1 = nbody + nsp; | |
1776 | while (np1[begmatch] == SPACEGLYPH) | |
1777 | begmatch++; | |
1778 | } | |
1779 | ||
1780 | /* Avoid doing insert/delete char | |
1781 | just cause number of leading spaces differs | |
1782 | when the following text does not match. */ | |
1783 | if (begmatch == 0 && osp != nsp) | |
1784 | osp = nsp = min (osp, nsp); | |
1785 | ||
1786 | /* Find matching characters at end of line */ | |
1787 | op1 = obody + olen; | |
1788 | np1 = nbody + nlen; | |
1789 | op2 = op1 + begmatch - min (olen - osp, nlen - nsp); | |
1790 | while (op1 > op2 && op1[-1] == np1[-1]) | |
1791 | { | |
1792 | op1--; | |
1793 | np1--; | |
1794 | } | |
1795 | endmatch = obody + olen - op1; | |
1796 | ||
1797 | /* Put correct value back in nbody[nlen]. | |
1798 | This is important because direct_output_for_insert | |
1799 | can write into the line at a later point. | |
1800 | If this screws up the zero at the end of the line, re-establish it. */ | |
1801 | nbody[nlen] = save; | |
1802 | obody[olen] = 0; | |
1803 | ||
1804 | /* tem gets the distance to insert or delete. | |
1805 | endmatch is how many characters we save by doing so. | |
1806 | Is it worth it? */ | |
1807 | ||
1808 | tem = (nlen - nsp) - (olen - osp); | |
1809 | if (endmatch && tem | |
502b9b64 | 1810 | && (!char_ins_del_ok || endmatch <= char_ins_del_cost (frame)[tem])) |
4588ec20 JB |
1811 | endmatch = 0; |
1812 | ||
1813 | /* nsp - osp is the distance to insert or delete. | |
1814 | If that is nonzero, begmatch is known to be nonzero also. | |
1815 | begmatch + endmatch is how much we save by doing the ins/del. | |
1816 | Is it worth it? */ | |
1817 | ||
1818 | if (nsp != osp | |
1819 | && (!char_ins_del_ok | |
502b9b64 | 1820 | || begmatch + endmatch <= char_ins_del_cost (frame)[nsp - osp])) |
4588ec20 JB |
1821 | { |
1822 | begmatch = 0; | |
1823 | endmatch = 0; | |
1824 | osp = nsp = min (osp, nsp); | |
1825 | } | |
1826 | ||
1827 | /* Now go through the line, inserting, writing and | |
1828 | deleting as appropriate. */ | |
1829 | ||
1830 | if (osp > nsp) | |
1831 | { | |
1832 | cursor_to (vpos, nsp); | |
1833 | delete_glyphs (osp - nsp); | |
1834 | } | |
1835 | else if (nsp > osp) | |
1836 | { | |
1837 | /* If going to delete chars later in line | |
1838 | and insert earlier in the line, | |
1839 | must delete first to avoid losing data in the insert */ | |
1840 | if (endmatch && nlen < olen + nsp - osp) | |
1841 | { | |
1842 | cursor_to (vpos, nlen - endmatch + osp - nsp); | |
1843 | delete_glyphs (olen + nsp - osp - nlen); | |
1844 | olen = nlen - (nsp - osp); | |
1845 | } | |
1846 | cursor_to (vpos, osp); | |
1847 | insert_glyphs ((char *)0, nsp - osp); | |
1848 | } | |
1849 | olen += nsp - osp; | |
1850 | ||
1851 | tem = nsp + begmatch + endmatch; | |
1852 | if (nlen != tem || olen != tem) | |
1853 | { | |
1854 | cursor_to (vpos, nsp + begmatch); | |
1855 | if (!endmatch || nlen == olen) | |
1856 | { | |
1857 | /* If new text being written reaches right margin, | |
1858 | there is no need to do clear-to-eol at the end. | |
1859 | (and it would not be safe, since cursor is not | |
1860 | going to be "at the margin" after the text is done) */ | |
502b9b64 | 1861 | if (nlen == FRAME_WIDTH (frame)) |
4588ec20 JB |
1862 | olen = 0; |
1863 | write_glyphs (nbody + nsp + begmatch, nlen - tem); | |
1864 | ||
1865 | #ifdef obsolete | |
1866 | ||
1867 | /* the following code loses disastrously if tem == nlen. | |
1868 | Rather than trying to fix that case, I am trying the simpler | |
1869 | solution found above. */ | |
1870 | ||
1871 | /* If the text reaches to the right margin, | |
1872 | it will lose one way or another (depending on AutoWrap) | |
1873 | to clear to end of line after outputting all the text. | |
1874 | So pause with one character to go and clear the line then. */ | |
502b9b64 | 1875 | if (nlen == FRAME_WIDTH (frame) && fast_clear_end_of_line && olen > nlen) |
4588ec20 JB |
1876 | { |
1877 | /* endmatch must be zero, and tem must equal nsp + begmatch */ | |
1878 | write_glyphs (nbody + tem, nlen - tem - 1); | |
1879 | clear_end_of_line (olen); | |
1880 | olen = 0; /* Don't let it be cleared again later */ | |
1881 | write_glyphs (nbody + nlen - 1, 1); | |
1882 | } | |
1883 | else | |
1884 | write_glyphs (nbody + nsp + begmatch, nlen - tem); | |
1885 | #endif /* OBSOLETE */ | |
1886 | ||
1887 | } | |
1888 | else if (nlen > olen) | |
1889 | { | |
1890 | write_glyphs (nbody + nsp + begmatch, olen - tem); | |
1891 | insert_glyphs (nbody + nsp + begmatch + olen - tem, nlen - olen); | |
1892 | olen = nlen; | |
1893 | } | |
1894 | else if (olen > nlen) | |
1895 | { | |
1896 | write_glyphs (nbody + nsp + begmatch, nlen - tem); | |
1897 | delete_glyphs (olen - nlen); | |
1898 | olen = nlen; | |
1899 | } | |
1900 | } | |
1901 | ||
1902 | just_erase: | |
1903 | /* If any unerased characters remain after the new line, erase them. */ | |
1904 | if (olen > nlen) | |
1905 | { | |
1906 | cursor_to (vpos, nlen); | |
1907 | clear_end_of_line (olen); | |
1908 | } | |
1909 | ||
502b9b64 JB |
1910 | /* Exchange contents between current_frame and new_frame. */ |
1911 | temp = desired_frame->glyphs[vpos]; | |
1912 | desired_frame->glyphs[vpos] = current_frame->glyphs[vpos]; | |
1913 | current_frame->glyphs[vpos] = temp; | |
60a8948a RS |
1914 | |
1915 | /* Exchange charstarts between current_frame and new_frame. */ | |
1916 | temp1 = desired_frame->charstarts[vpos]; | |
1917 | desired_frame->charstarts[vpos] = current_frame->charstarts[vpos]; | |
1918 | current_frame->charstarts[vpos] = temp1; | |
4588ec20 JB |
1919 | } |
1920 | \f | |
6f7bbf79 KH |
1921 | /* A vector of size >= 2 * NFRAMES + 3 * NBUFFERS + 1, containing the |
1922 | session's frames, frame names, buffers, buffer-read-only flags, and | |
1923 | buffer-modified-flags, and a trailing sentinel (so we don't need to | |
1924 | add length checks). */ | |
078b3696 KH |
1925 | static Lisp_Object frame_and_buffer_state; |
1926 | ||
1927 | DEFUN ("frame-or-buffer-changed-p", Fframe_or_buffer_changed_p, | |
1928 | Sframe_or_buffer_changed_p, 0, 0, 0, | |
1929 | "Return non-nil if the frame and buffer state appears to have changed.\n\ | |
1930 | The state variable is an internal vector containing all frames and buffers,\n\ | |
836d2cde | 1931 | aside from buffers whose names start with space,\n\ |
078b3696 KH |
1932 | along with the buffers' read-only and modified flags, which allows a fast\n\ |
1933 | check to see whether the menu bars might need to be recomputed.\n\ | |
1934 | If this function returns non-nil, it updates the internal vector to reflect\n\ | |
1935 | the current state.\n") | |
1936 | () | |
1937 | { | |
1938 | Lisp_Object tail, frame, buf; | |
1939 | Lisp_Object *vecp; | |
1940 | int n; | |
bd9e3e75 | 1941 | |
078b3696 KH |
1942 | vecp = XVECTOR (frame_and_buffer_state)->contents; |
1943 | FOR_EACH_FRAME (tail, frame) | |
bd9e3e75 KH |
1944 | { |
1945 | if (!EQ (*vecp++, frame)) | |
1946 | goto changed; | |
1947 | if (!EQ (*vecp++, XFRAME (frame)->name)) | |
1948 | goto changed; | |
1949 | } | |
50cf83f8 RS |
1950 | /* Check that the buffer info matches. |
1951 | No need to test for the end of the vector | |
1952 | because the last element of the vector is lambda | |
1953 | and that will always cause a mismatch. */ | |
078b3696 KH |
1954 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCONS (tail)->cdr) |
1955 | { | |
1956 | buf = XCONS (XCONS (tail)->car)->cdr; | |
836d2cde RS |
1957 | /* Ignore buffers that aren't included in buffer lists. */ |
1958 | if (XSTRING (XBUFFER (buf)->name)->data[0] == ' ') | |
1959 | continue; | |
078b3696 KH |
1960 | if (!EQ (*vecp++, buf)) |
1961 | goto changed; | |
1962 | if (!EQ (*vecp++, XBUFFER (buf)->read_only)) | |
1963 | goto changed; | |
1964 | if (!EQ (*vecp++, Fbuffer_modified_p (buf))) | |
1965 | goto changed; | |
1966 | } | |
50cf83f8 RS |
1967 | /* Detect deletion of a buffer at the end of the list. */ |
1968 | if (*vecp == Qlambda) | |
1969 | return Qnil; | |
078b3696 | 1970 | changed: |
5dad8282 | 1971 | /* Start with 1 so there is room for at least one lambda at the end. */ |
078b3696 KH |
1972 | n = 1; |
1973 | FOR_EACH_FRAME (tail, frame) | |
d1dad759 | 1974 | n += 2; |
078b3696 KH |
1975 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCONS (tail)->cdr) |
1976 | n += 3; | |
267ad509 KH |
1977 | /* Reallocate the vector if it's grown, or if it's shrunk a lot. */ |
1978 | if (n > XVECTOR (frame_and_buffer_state)->size | |
d1dad759 KH |
1979 | || n + 20 < XVECTOR (frame_and_buffer_state)->size / 2) |
1980 | /* Add 20 extra so we grow it less often. */ | |
1981 | frame_and_buffer_state = Fmake_vector (make_number (n + 20), Qlambda); | |
078b3696 KH |
1982 | vecp = XVECTOR (frame_and_buffer_state)->contents; |
1983 | FOR_EACH_FRAME (tail, frame) | |
bd9e3e75 KH |
1984 | { |
1985 | *vecp++ = frame; | |
1986 | *vecp++ = XFRAME (frame)->name; | |
1987 | } | |
078b3696 KH |
1988 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCONS (tail)->cdr) |
1989 | { | |
1990 | buf = XCONS (XCONS (tail)->car)->cdr; | |
836d2cde RS |
1991 | /* Ignore buffers that aren't included in buffer lists. */ |
1992 | if (XSTRING (XBUFFER (buf)->name)->data[0] == ' ') | |
1993 | continue; | |
078b3696 KH |
1994 | *vecp++ = buf; |
1995 | *vecp++ = XBUFFER (buf)->read_only; | |
1996 | *vecp++ = Fbuffer_modified_p (buf); | |
1997 | } | |
d1dad759 KH |
1998 | /* Fill up the vector with lambdas (always at least one). */ |
1999 | *vecp++ = Qlambda; | |
2000 | while (vecp - XVECTOR (frame_and_buffer_state)->contents | |
2001 | < XVECTOR (frame_and_buffer_state)->size) | |
267ad509 | 2002 | *vecp++ = Qlambda; |
d1dad759 KH |
2003 | /* Make sure we didn't overflow the vector. */ |
2004 | if (vecp - XVECTOR (frame_and_buffer_state)->contents | |
2005 | > XVECTOR (frame_and_buffer_state)->size) | |
2006 | abort (); | |
078b3696 KH |
2007 | return Qt; |
2008 | } | |
2009 | \f | |
4588ec20 JB |
2010 | DEFUN ("open-termscript", Fopen_termscript, Sopen_termscript, |
2011 | 1, 1, "FOpen termscript file: ", | |
2012 | "Start writing all terminal output to FILE as well as the terminal.\n\ | |
2013 | FILE = nil means just close any termscript file currently open.") | |
2014 | (file) | |
2015 | Lisp_Object file; | |
2016 | { | |
2017 | if (termscript != 0) fclose (termscript); | |
2018 | termscript = 0; | |
2019 | ||
efb859b4 | 2020 | if (! NILP (file)) |
4588ec20 JB |
2021 | { |
2022 | file = Fexpand_file_name (file, Qnil); | |
2023 | termscript = fopen (XSTRING (file)->data, "w"); | |
2024 | if (termscript == 0) | |
2025 | report_file_error ("Opening termscript", Fcons (file, Qnil)); | |
2026 | } | |
2027 | return Qnil; | |
2028 | } | |
2029 | \f | |
2030 | ||
2031 | #ifdef SIGWINCH | |
efb859b4 | 2032 | SIGTYPE |
61cbef47 RS |
2033 | window_change_signal (signalnum) /* If we don't have an argument, */ |
2034 | int signalnum; /* some compilers complain in signal calls. */ | |
4588ec20 JB |
2035 | { |
2036 | int width, height; | |
2037 | extern int errno; | |
2038 | int old_errno = errno; | |
2039 | ||
502b9b64 | 2040 | get_frame_size (&width, &height); |
4588ec20 | 2041 | |
502b9b64 JB |
2042 | /* The frame size change obviously applies to a termcap-controlled |
2043 | frame. Find such a frame in the list, and assume it's the only | |
4588ec20 | 2044 | one (since the redisplay code always writes to stdout, not a |
502b9b64 | 2045 | FILE * specified in the frame structure). Record the new size, |
4588ec20 JB |
2046 | but don't reallocate the data structures now. Let that be done |
2047 | later outside of the signal handler. */ | |
2048 | ||
2049 | { | |
35f56f96 | 2050 | Lisp_Object tail, frame; |
4588ec20 | 2051 | |
35f56f96 | 2052 | FOR_EACH_FRAME (tail, frame) |
4588ec20 | 2053 | { |
35f56f96 | 2054 | if (FRAME_TERMCAP_P (XFRAME (frame))) |
4588ec20 | 2055 | { |
35f56f96 | 2056 | change_frame_size (XFRAME (frame), height, width, 0, 1); |
4588ec20 JB |
2057 | break; |
2058 | } | |
2059 | } | |
2060 | } | |
2061 | ||
2062 | signal (SIGWINCH, window_change_signal); | |
2063 | errno = old_errno; | |
2064 | } | |
2065 | #endif /* SIGWINCH */ | |
2066 | ||
2067 | ||
502b9b64 | 2068 | /* Do any change in frame size that was requested by a signal. */ |
4588ec20 JB |
2069 | |
2070 | do_pending_window_change () | |
2071 | { | |
2072 | /* If window_change_signal should have run before, run it now. */ | |
2073 | while (delayed_size_change) | |
2074 | { | |
35f56f96 | 2075 | Lisp_Object tail, frame; |
4588ec20 JB |
2076 | |
2077 | delayed_size_change = 0; | |
2078 | ||
35f56f96 | 2079 | FOR_EACH_FRAME (tail, frame) |
4588ec20 | 2080 | { |
35f56f96 JB |
2081 | FRAME_PTR f = XFRAME (frame); |
2082 | ||
502b9b64 JB |
2083 | int height = FRAME_NEW_HEIGHT (f); |
2084 | int width = FRAME_NEW_WIDTH (f); | |
4588ec20 | 2085 | |
08f7aa3e | 2086 | if (height != 0 || width != 0) |
b6a65ac2 | 2087 | change_frame_size (f, height, width, 0, 0); |
4588ec20 JB |
2088 | } |
2089 | } | |
2090 | } | |
2091 | ||
2092 | ||
502b9b64 | 2093 | /* Change the frame height and/or width. Values may be given as zero to |
b6a65ac2 | 2094 | indicate no change is to take place. |
4588ec20 | 2095 | |
b6a65ac2 JB |
2096 | If DELAY is non-zero, then assume we're being called from a signal |
2097 | handler, and queue the change for later - perhaps the next | |
2098 | redisplay. Since this tries to resize windows, we can't call it | |
2099 | from a signal handler. */ | |
2100 | ||
45140e01 RS |
2101 | change_frame_size (f, newheight, newwidth, pretend, delay) |
2102 | register FRAME_PTR f; | |
2103 | int newheight, newwidth, pretend; | |
2104 | { | |
2105 | Lisp_Object tail, frame; | |
2106 | if (FRAME_TERMCAP_P (f)) | |
2107 | { | |
2108 | /* When using termcap, all frames use the same screen, | |
2109 | so a change in size affects all termcap frames. */ | |
2110 | FOR_EACH_FRAME (tail, frame) | |
2111 | if (FRAME_TERMCAP_P (XFRAME (frame))) | |
2112 | change_frame_size_1 (XFRAME (frame), newheight, newwidth, | |
2113 | pretend, delay); | |
2114 | } | |
2115 | else | |
2116 | change_frame_size_1 (f, newheight, newwidth, pretend, delay); | |
2117 | } | |
2118 | ||
2119 | static void | |
2120 | change_frame_size_1 (frame, newheight, newwidth, pretend, delay) | |
502b9b64 | 2121 | register FRAME_PTR frame; |
a1d789d0 | 2122 | int newheight, newwidth, pretend, delay; |
4588ec20 JB |
2123 | { |
2124 | /* If we can't deal with the change now, queue it for later. */ | |
b6a65ac2 | 2125 | if (delay) |
4588ec20 | 2126 | { |
b6a65ac2 | 2127 | FRAME_NEW_HEIGHT (frame) = newheight; |
502b9b64 | 2128 | FRAME_NEW_WIDTH (frame) = newwidth; |
4588ec20 JB |
2129 | delayed_size_change = 1; |
2130 | return; | |
2131 | } | |
2132 | ||
502b9b64 JB |
2133 | /* This size-change overrides any pending one for this frame. */ |
2134 | FRAME_NEW_HEIGHT (frame) = 0; | |
b6a65ac2 JB |
2135 | FRAME_NEW_WIDTH (frame) = 0; |
2136 | ||
08f7aa3e | 2137 | /* If an argument is zero, set it to the current value. */ |
b6a65ac2 JB |
2138 | newheight || (newheight = FRAME_HEIGHT (frame)); |
2139 | newwidth || (newwidth = FRAME_WIDTH (frame)); | |
4588ec20 | 2140 | |
b6a65ac2 JB |
2141 | /* Round up to the smallest acceptable size. */ |
2142 | check_frame_size (frame, &newheight, &newwidth); | |
2143 | ||
2144 | /* If we're not changing the frame size, quit now. */ | |
2145 | if (newheight == FRAME_HEIGHT (frame) | |
2146 | && newwidth == FRAME_WIDTH (frame)) | |
4588ec20 JB |
2147 | return; |
2148 | ||
cbb95688 RS |
2149 | BLOCK_INPUT; |
2150 | ||
886a8a6c KH |
2151 | #ifdef MSDOS |
2152 | /* We only can set screen dimensions to certain values supported | |
2153 | by our video hardware. Try to find the smallest size greater | |
2154 | or equal to the requested dimensions. */ | |
2155 | dos_set_window_size (&newheight, &newwidth); | |
2156 | #endif | |
2157 | ||
b6a65ac2 | 2158 | if (newheight != FRAME_HEIGHT (frame)) |
4588ec20 | 2159 | { |
b6a65ac2 | 2160 | if (FRAME_HAS_MINIBUF_P (frame) |
502b9b64 | 2161 | && ! FRAME_MINIBUF_ONLY_P (frame)) |
4588ec20 | 2162 | { |
502b9b64 JB |
2163 | /* Frame has both root and minibuffer. */ |
2164 | set_window_height (FRAME_ROOT_WINDOW (frame), | |
cb470ab1 | 2165 | newheight - 1 - FRAME_MENU_BAR_LINES (frame), 0); |
a5d8b611 KH |
2166 | XSETFASTINT (XWINDOW (FRAME_MINIBUF_WINDOW (frame))->top, |
2167 | newheight - 1); | |
502b9b64 | 2168 | set_window_height (FRAME_MINIBUF_WINDOW (frame), 1, 0); |
4588ec20 JB |
2169 | } |
2170 | else | |
502b9b64 | 2171 | /* Frame has just one top-level window. */ |
cb470ab1 RS |
2172 | set_window_height (FRAME_ROOT_WINDOW (frame), |
2173 | newheight - FRAME_MENU_BAR_LINES (frame), 0); | |
b6a65ac2 JB |
2174 | |
2175 | if (FRAME_TERMCAP_P (frame) && !pretend) | |
2176 | FrameRows = newheight; | |
4588ec20 JB |
2177 | |
2178 | #if 0 | |
502b9b64 | 2179 | if (frame->output_method == output_termcap) |
4588ec20 | 2180 | { |
b6a65ac2 | 2181 | frame_height = newheight; |
4588ec20 | 2182 | if (!pretend) |
b6a65ac2 | 2183 | FrameRows = newheight; |
4588ec20 JB |
2184 | } |
2185 | #endif | |
2186 | } | |
2187 | ||
b6a65ac2 | 2188 | if (newwidth != FRAME_WIDTH (frame)) |
4588ec20 | 2189 | { |
502b9b64 | 2190 | set_window_width (FRAME_ROOT_WINDOW (frame), newwidth, 0); |
b6a65ac2 | 2191 | if (FRAME_HAS_MINIBUF_P (frame)) |
502b9b64 | 2192 | set_window_width (FRAME_MINIBUF_WINDOW (frame), newwidth, 0); |
4588ec20 | 2193 | |
b6a65ac2 | 2194 | if (FRAME_TERMCAP_P (frame) && !pretend) |
502b9b64 | 2195 | FrameCols = newwidth; |
4588ec20 | 2196 | #if 0 |
502b9b64 | 2197 | if (frame->output_method == output_termcap) |
4588ec20 | 2198 | { |
502b9b64 | 2199 | frame_width = newwidth; |
4588ec20 | 2200 | if (!pretend) |
502b9b64 | 2201 | FrameCols = newwidth; |
4588ec20 JB |
2202 | } |
2203 | #endif | |
2204 | } | |
2205 | ||
b6a65ac2 JB |
2206 | FRAME_HEIGHT (frame) = newheight; |
2207 | FRAME_WIDTH (frame) = newwidth; | |
986e61b8 RS |
2208 | |
2209 | if (FRAME_CURSOR_X (frame) >= FRAME_WIDTH (frame)) | |
2210 | FRAME_CURSOR_X (frame) = FRAME_WIDTH (frame) - 1; | |
2211 | if (FRAME_CURSOR_Y (frame) >= FRAME_HEIGHT (frame)) | |
2212 | FRAME_CURSOR_Y (frame) = FRAME_HEIGHT (frame) - 1; | |
2213 | ||
502b9b64 JB |
2214 | remake_frame_glyphs (frame); |
2215 | calculate_costs (frame); | |
97cf50e7 RS |
2216 | |
2217 | UNBLOCK_INPUT; | |
4588ec20 JB |
2218 | } |
2219 | \f | |
2220 | DEFUN ("send-string-to-terminal", Fsend_string_to_terminal, | |
2221 | Ssend_string_to_terminal, 1, 1, 0, | |
2222 | "Send STRING to the terminal without alteration.\n\ | |
2223 | Control characters in STRING will have terminal-dependent effects.") | |
e912ba09 EN |
2224 | (string) |
2225 | Lisp_Object string; | |
4588ec20 | 2226 | { |
e912ba09 EN |
2227 | CHECK_STRING (string, 0); |
2228 | fwrite (XSTRING (string)->data, 1, XSTRING (string)->size, stdout); | |
4588ec20 JB |
2229 | fflush (stdout); |
2230 | if (termscript) | |
2231 | { | |
e912ba09 | 2232 | fwrite (XSTRING (string)->data, 1, XSTRING (string)->size, termscript); |
4588ec20 JB |
2233 | fflush (termscript); |
2234 | } | |
2235 | return Qnil; | |
2236 | } | |
2237 | ||
2238 | DEFUN ("ding", Fding, Sding, 0, 1, 0, | |
2239 | "Beep, or flash the screen.\n\ | |
2240 | Also, unless an argument is given,\n\ | |
2241 | terminate any keyboard macro currently executing.") | |
2242 | (arg) | |
2243 | Lisp_Object arg; | |
2244 | { | |
efb859b4 | 2245 | if (!NILP (arg)) |
4588ec20 | 2246 | { |
7fa788da RS |
2247 | if (noninteractive) |
2248 | putchar (07); | |
2249 | else | |
2250 | ring_bell (); | |
4588ec20 JB |
2251 | fflush (stdout); |
2252 | } | |
2253 | else | |
2254 | bitch_at_user (); | |
2255 | ||
2256 | return Qnil; | |
2257 | } | |
2258 | ||
2259 | bitch_at_user () | |
2260 | { | |
2261 | if (noninteractive) | |
2262 | putchar (07); | |
2263 | else if (!INTERACTIVE) /* Stop executing a keyboard macro. */ | |
2264 | error ("Keyboard macro terminated by a command ringing the bell"); | |
2265 | else | |
2266 | ring_bell (); | |
2267 | fflush (stdout); | |
2268 | } | |
2269 | ||
2270 | DEFUN ("sleep-for", Fsleep_for, Ssleep_for, 1, 2, 0, | |
767229f8 | 2271 | "Pause, without updating display, for SECONDS seconds.\n\ |
b07646f5 JB |
2272 | SECONDS may be a floating-point value, meaning that you can wait for a\n\ |
2273 | fraction of a second. Optional second arg MILLISECONDS specifies an\n\ | |
2274 | additional wait period, in milliseconds; this may be useful if your\n\ | |
2275 | Emacs was built without floating point support.\n\ | |
2276 | \(Not all operating systems support waiting for a fraction of a second.)") | |
767229f8 JB |
2277 | (seconds, milliseconds) |
2278 | Lisp_Object seconds, milliseconds; | |
4588ec20 | 2279 | { |
767229f8 | 2280 | int sec, usec; |
4588ec20 | 2281 | |
767229f8 | 2282 | if (NILP (milliseconds)) |
e9c9a718 | 2283 | XSETINT (milliseconds, 0); |
767229f8 JB |
2284 | else |
2285 | CHECK_NUMBER (milliseconds, 1); | |
b07646f5 JB |
2286 | usec = XINT (milliseconds) * 1000; |
2287 | ||
2288 | #ifdef LISP_FLOAT_TYPE | |
2289 | { | |
2290 | double duration = extract_float (seconds); | |
2291 | sec = (int) duration; | |
2292 | usec += (duration - sec) * 1000000; | |
2293 | } | |
2294 | #else | |
2295 | CHECK_NUMBER (seconds, 0); | |
2296 | sec = XINT (seconds); | |
2297 | #endif | |
4588ec20 | 2298 | |
a41f8bed | 2299 | #ifndef EMACS_HAS_USECS |
767229f8 JB |
2300 | if (sec == 0 && usec != 0) |
2301 | error ("millisecond `sleep-for' not supported on %s", SYSTEM_TYPE); | |
4588ec20 | 2302 | #endif |
767229f8 JB |
2303 | |
2304 | /* Assure that 0 <= usec < 1000000. */ | |
2305 | if (usec < 0) | |
2306 | { | |
2307 | /* We can't rely on the rounding being correct if user is negative. */ | |
2308 | if (-1000000 < usec) | |
2309 | sec--, usec += 1000000; | |
2310 | else | |
2311 | sec -= -usec / 1000000, usec = 1000000 - (-usec % 1000000); | |
4588ec20 | 2312 | } |
767229f8 JB |
2313 | else |
2314 | sec += usec / 1000000, usec %= 1000000; | |
2315 | ||
6b5153b1 | 2316 | if (sec < 0 || (sec == 0 && usec == 0)) |
767229f8 | 2317 | return Qnil; |
4588ec20 | 2318 | |
f76475ad JB |
2319 | { |
2320 | Lisp_Object zero; | |
2321 | ||
a5d8b611 | 2322 | XSETFASTINT (zero, 0); |
f76475ad JB |
2323 | wait_reading_process_input (sec, usec, zero, 0); |
2324 | } | |
d1af74e9 | 2325 | |
767229f8 JB |
2326 | /* We should always have wait_reading_process_input; we have a dummy |
2327 | implementation for systems which don't support subprocesses. */ | |
2328 | #if 0 | |
2329 | /* No wait_reading_process_input */ | |
4588ec20 JB |
2330 | immediate_quit = 1; |
2331 | QUIT; | |
2332 | ||
2333 | #ifdef VMS | |
2334 | sys_sleep (sec); | |
2335 | #else /* not VMS */ | |
2336 | /* The reason this is done this way | |
2337 | (rather than defined (H_S) && defined (H_T)) | |
2338 | is because the VMS preprocessor doesn't grok `defined' */ | |
2339 | #ifdef HAVE_SELECT | |
a41f8bed JB |
2340 | EMACS_GET_TIME (end_time); |
2341 | EMACS_SET_SECS_USECS (timeout, sec, usec); | |
d1af74e9 | 2342 | EMACS_ADD_TIME (end_time, end_time, timeout); |
a41f8bed | 2343 | |
4588ec20 JB |
2344 | while (1) |
2345 | { | |
a41f8bed JB |
2346 | EMACS_GET_TIME (timeout); |
2347 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
2348 | if (EMACS_TIME_NEG_P (timeout) | |
2349 | || !select (1, 0, 0, 0, &timeout)) | |
4588ec20 JB |
2350 | break; |
2351 | } | |
4588ec20 JB |
2352 | #else /* not HAVE_SELECT */ |
2353 | sleep (sec); | |
2354 | #endif /* HAVE_SELECT */ | |
2355 | #endif /* not VMS */ | |
2356 | ||
2357 | immediate_quit = 0; | |
2358 | #endif /* no subprocesses */ | |
2359 | ||
2360 | return Qnil; | |
2361 | } | |
2362 | ||
f76475ad JB |
2363 | /* This is just like wait_reading_process_input, except that |
2364 | it does the redisplay. | |
2365 | ||
ea0d86af | 2366 | It's also much like Fsit_for, except that it can be used for |
836d2cde | 2367 | waiting for input as well. */ |
4588ec20 | 2368 | |
f76475ad JB |
2369 | Lisp_Object |
2370 | sit_for (sec, usec, reading, display) | |
2371 | int sec, usec, reading, display; | |
2372 | { | |
2373 | Lisp_Object read_kbd; | |
4588ec20 | 2374 | |
ccddf474 RS |
2375 | swallow_events (display); |
2376 | ||
f80bd2d7 | 2377 | if (detect_input_pending_run_timers (display)) |
4588ec20 | 2378 | return Qnil; |
4588ec20 | 2379 | |
f76475ad JB |
2380 | if (display) |
2381 | redisplay_preserve_echo_area (); | |
4588ec20 | 2382 | |
dfdb645c JB |
2383 | if (sec == 0 && usec == 0) |
2384 | return Qt; | |
2385 | ||
4588ec20 | 2386 | #ifdef SIGIO |
8fc798e9 | 2387 | gobble_input (0); |
f76475ad JB |
2388 | #endif |
2389 | ||
e9c9a718 | 2390 | XSETINT (read_kbd, reading ? -1 : 1); |
f76475ad JB |
2391 | wait_reading_process_input (sec, usec, read_kbd, display); |
2392 | ||
d1af74e9 | 2393 | |
500ab754 JB |
2394 | /* wait_reading_process_input should always be available now; it is |
2395 | simulated in a simple way on systems that don't support | |
2396 | subprocesses. */ | |
2397 | #if 0 | |
2398 | /* No wait_reading_process_input available. */ | |
4588ec20 JB |
2399 | immediate_quit = 1; |
2400 | QUIT; | |
2401 | ||
2402 | waitchannels = 1; | |
2403 | #ifdef VMS | |
f76475ad | 2404 | input_wait_timeout (XINT (arg)); |
4588ec20 | 2405 | #else /* not VMS */ |
d1af74e9 JB |
2406 | #ifndef HAVE_TIMEVAL |
2407 | timeout_sec = sec; | |
2408 | select (1, &waitchannels, 0, 0, &timeout_sec); | |
2409 | #else /* HAVE_TIMEVAL */ | |
2410 | timeout.tv_sec = sec; | |
2411 | timeout.tv_usec = usec; | |
4588ec20 | 2412 | select (1, &waitchannels, 0, 0, &timeout); |
d1af74e9 | 2413 | #endif /* HAVE_TIMEVAL */ |
4588ec20 JB |
2414 | #endif /* not VMS */ |
2415 | ||
2416 | immediate_quit = 0; | |
d1af74e9 | 2417 | #endif |
4588ec20 JB |
2418 | |
2419 | return detect_input_pending () ? Qnil : Qt; | |
2420 | } | |
2421 | ||
f76475ad | 2422 | DEFUN ("sit-for", Fsit_for, Ssit_for, 1, 3, 0, |
767229f8 | 2423 | "Perform redisplay, then wait for SECONDS seconds or until input is available.\n\ |
b07646f5 JB |
2424 | SECONDS may be a floating-point value, meaning that you can wait for a\n\ |
2425 | fraction of a second. Optional second arg MILLISECONDS specifies an\n\ | |
2426 | additional wait period, in milliseconds; this may be useful if your\n\ | |
2427 | Emacs was built without floating point support.\n\ | |
2428 | \(Not all operating systems support waiting for a fraction of a second.)\n\ | |
e912ba09 | 2429 | Optional third arg NODISP non-nil means don't redisplay, just wait for input.\n\ |
f76475ad JB |
2430 | Redisplay is preempted as always if input arrives, and does not happen\n\ |
2431 | if input is available before it starts.\n\ | |
2432 | Value is t if waited the full time with no input arriving.") | |
767229f8 JB |
2433 | (seconds, milliseconds, nodisp) |
2434 | Lisp_Object seconds, milliseconds, nodisp; | |
f76475ad | 2435 | { |
767229f8 | 2436 | int sec, usec; |
f76475ad | 2437 | |
767229f8 | 2438 | if (NILP (milliseconds)) |
e9c9a718 | 2439 | XSETINT (milliseconds, 0); |
767229f8 JB |
2440 | else |
2441 | CHECK_NUMBER (milliseconds, 1); | |
b07646f5 JB |
2442 | usec = XINT (milliseconds) * 1000; |
2443 | ||
2444 | #ifdef LISP_FLOAT_TYPE | |
2445 | { | |
2446 | double duration = extract_float (seconds); | |
2447 | sec = (int) duration; | |
2448 | usec += (duration - sec) * 1000000; | |
2449 | } | |
2450 | #else | |
2451 | CHECK_NUMBER (seconds, 0); | |
2452 | sec = XINT (seconds); | |
2453 | #endif | |
f76475ad | 2454 | |
f76475ad | 2455 | #ifndef EMACS_HAS_USECS |
767229f8 JB |
2456 | if (usec != 0 && sec == 0) |
2457 | error ("millisecond `sit-for' not supported on %s", SYSTEM_TYPE); | |
f76475ad | 2458 | #endif |
f76475ad JB |
2459 | |
2460 | return sit_for (sec, usec, 0, NILP (nodisp)); | |
2461 | } | |
4588ec20 JB |
2462 | \f |
2463 | char *terminal_type; | |
2464 | ||
2465 | /* Initialization done when Emacs fork is started, before doing stty. */ | |
2466 | /* Determine terminal type and set terminal_driver */ | |
2467 | /* Then invoke its decoding routine to set up variables | |
2468 | in the terminal package */ | |
2469 | ||
2470 | init_display () | |
2471 | { | |
2472 | #ifdef HAVE_X_WINDOWS | |
2473 | extern int display_arg; | |
2474 | #endif | |
2475 | ||
2476 | meta_key = 0; | |
2477 | inverse_video = 0; | |
2478 | cursor_in_echo_area = 0; | |
2479 | terminal_type = (char *) 0; | |
2480 | ||
1315c181 JB |
2481 | /* Now is the time to initialize this; it's used by init_sys_modes |
2482 | during startup. */ | |
2483 | Vwindow_system = Qnil; | |
4588ec20 | 2484 | |
1315c181 JB |
2485 | /* If the user wants to use a window system, we shouldn't bother |
2486 | initializing the terminal. This is especially important when the | |
2487 | terminal is so dumb that emacs gives up before and doesn't bother | |
2488 | using the window system. | |
4588ec20 | 2489 | |
36bbad1d KH |
2490 | If the DISPLAY environment variable is set and nonempty, |
2491 | try to use X, and die with an error message if that doesn't work. */ | |
4588ec20 JB |
2492 | |
2493 | #ifdef HAVE_X_WINDOWS | |
d460af17 JB |
2494 | if (! display_arg) |
2495 | { | |
36bbad1d | 2496 | char *display; |
d460af17 | 2497 | #ifdef VMS |
36bbad1d | 2498 | display = getenv ("DECW$DISPLAY"); |
d460af17 | 2499 | #else |
36bbad1d | 2500 | display = getenv ("DISPLAY"); |
d460af17 | 2501 | #endif |
36bbad1d KH |
2502 | |
2503 | display_arg = (display != 0 && *display != 0); | |
f040093a | 2504 | } |
d460af17 JB |
2505 | |
2506 | if (!inhibit_window_system && display_arg) | |
4588ec20 JB |
2507 | { |
2508 | Vwindow_system = intern ("x"); | |
2509 | #ifdef HAVE_X11 | |
2510 | Vwindow_system_version = make_number (11); | |
2511 | #else | |
2512 | Vwindow_system_version = make_number (10); | |
039e5d71 KH |
2513 | #endif |
2514 | #if defined (LINUX) && defined (HAVE_LIBNCURSES) | |
2515 | /* In some versions of ncurses, | |
2516 | tparm crashes if we have not called tgetent. | |
2517 | So call tgetent. */ | |
2518 | { char b[2044]; tgetent (b, "xterm");} | |
4588ec20 JB |
2519 | #endif |
2520 | return; | |
2521 | } | |
2522 | #endif /* HAVE_X_WINDOWS */ | |
2523 | ||
fd2e066a GV |
2524 | #ifdef HAVE_NTGUI |
2525 | if (!inhibit_window_system) | |
2526 | { | |
2527 | Vwindow_system = intern ("win32"); | |
2528 | Vwindow_system_version = make_number (1); | |
2529 | return; | |
2530 | } | |
2531 | #endif /* HAVE_NTGUI */ | |
2532 | ||
4588ec20 JB |
2533 | /* If no window system has been specified, try to use the terminal. */ |
2534 | if (! isatty (0)) | |
2535 | { | |
2536 | fprintf (stderr, "emacs: standard input is not a tty\n"); | |
2537 | exit (1); | |
2538 | } | |
2539 | ||
2540 | /* Look at the TERM variable */ | |
2541 | terminal_type = (char *) getenv ("TERM"); | |
2542 | if (!terminal_type) | |
2543 | { | |
2544 | #ifdef VMS | |
2545 | fprintf (stderr, "Please specify your terminal type.\n\ | |
2546 | For types defined in VMS, use set term /device=TYPE.\n\ | |
2547 | For types not defined in VMS, use define emacs_term \"TYPE\".\n\ | |
2548 | \(The quotation marks are necessary since terminal types are lower case.)\n"); | |
2549 | #else | |
2550 | fprintf (stderr, "Please set the environment variable TERM; see tset(1).\n"); | |
2551 | #endif | |
2552 | exit (1); | |
2553 | } | |
2554 | ||
2555 | #ifdef VMS | |
2556 | /* VMS DCL tends to upcase things, so downcase term type. | |
2557 | Hardly any uppercase letters in terminal types; should be none. */ | |
2558 | { | |
2559 | char *new = (char *) xmalloc (strlen (terminal_type) + 1); | |
2560 | char *p; | |
2561 | ||
2562 | strcpy (new, terminal_type); | |
2563 | ||
2564 | for (p = new; *p; p++) | |
2565 | if (isupper (*p)) | |
2566 | *p = tolower (*p); | |
2567 | ||
2568 | terminal_type = new; | |
2569 | } | |
2570 | #endif | |
2571 | ||
2572 | term_init (terminal_type); | |
2573 | ||
502b9b64 JB |
2574 | remake_frame_glyphs (selected_frame); |
2575 | calculate_costs (selected_frame); | |
4588ec20 JB |
2576 | |
2577 | /* X and Y coordinates of the cursor between updates. */ | |
502b9b64 JB |
2578 | FRAME_CURSOR_X (selected_frame) = 0; |
2579 | FRAME_CURSOR_Y (selected_frame) = 0; | |
4588ec20 JB |
2580 | |
2581 | #ifdef SIGWINCH | |
2582 | #ifndef CANNOT_DUMP | |
2583 | if (initialized) | |
2584 | #endif /* CANNOT_DUMP */ | |
2585 | signal (SIGWINCH, window_change_signal); | |
2586 | #endif /* SIGWINCH */ | |
2587 | } | |
2588 | \f | |
2589 | syms_of_display () | |
2590 | { | |
502b9b64 JB |
2591 | #ifdef MULTI_FRAME |
2592 | defsubr (&Sredraw_frame); | |
4588ec20 JB |
2593 | #endif |
2594 | defsubr (&Sredraw_display); | |
078b3696 | 2595 | defsubr (&Sframe_or_buffer_changed_p); |
4588ec20 JB |
2596 | defsubr (&Sopen_termscript); |
2597 | defsubr (&Sding); | |
2598 | defsubr (&Ssit_for); | |
2599 | defsubr (&Ssleep_for); | |
2600 | defsubr (&Ssend_string_to_terminal); | |
2601 | ||
d1dad759 | 2602 | frame_and_buffer_state = Fmake_vector (make_number (20), Qlambda); |
078b3696 KH |
2603 | staticpro (&frame_and_buffer_state); |
2604 | ||
9cda4f7c RS |
2605 | Qdisplay_table = intern ("display-table"); |
2606 | staticpro (&Qdisplay_table); | |
2607 | ||
4588ec20 | 2608 | DEFVAR_INT ("baud-rate", &baud_rate, |
eb285955 | 2609 | "*The output baud rate of the terminal.\n\ |
4588ec20 JB |
2610 | On most systems, changing this value will affect the amount of padding\n\ |
2611 | and the other strategic decisions made during redisplay."); | |
2612 | DEFVAR_BOOL ("inverse-video", &inverse_video, | |
502b9b64 | 2613 | "*Non-nil means invert the entire frame display.\n\ |
4588ec20 JB |
2614 | This means everything is in inverse video which otherwise would not be."); |
2615 | DEFVAR_BOOL ("visible-bell", &visible_bell, | |
502b9b64 | 2616 | "*Non-nil means try to flash the frame to represent a bell."); |
4588ec20 | 2617 | DEFVAR_BOOL ("no-redraw-on-reenter", &no_redraw_on_reenter, |
502b9b64 | 2618 | "*Non-nil means no need to redraw entire frame after suspending.\n\ |
4588ec20 | 2619 | A non-nil value is useful if the terminal can automatically preserve\n\ |
502b9b64 | 2620 | Emacs's frame display when you reenter Emacs.\n\ |
4588ec20 JB |
2621 | It is up to you to set this variable if your terminal can do that."); |
2622 | DEFVAR_LISP ("window-system", &Vwindow_system, | |
2623 | "A symbol naming the window-system under which Emacs is running\n\ | |
2624 | \(such as `x'), or nil if emacs is running on an ordinary terminal."); | |
2625 | DEFVAR_LISP ("window-system-version", &Vwindow_system_version, | |
2626 | "The version number of the window system in use.\n\ | |
2627 | For X windows, this is 10 or 11."); | |
2628 | DEFVAR_BOOL ("cursor-in-echo-area", &cursor_in_echo_area, | |
2629 | "Non-nil means put cursor in minibuffer, at end of any message there."); | |
2630 | DEFVAR_LISP ("glyph-table", &Vglyph_table, | |
502b9b64 | 2631 | "Table defining how to output a glyph code to the frame.\n\ |
4588ec20 JB |
2632 | If not nil, this is a vector indexed by glyph code to define the glyph.\n\ |
2633 | Each element can be:\n\ | |
2634 | integer: a glyph code which this glyph is an alias for.\n\ | |
2635 | string: output this glyph using that string (not impl. in X windows).\n\ | |
2636 | nil: this glyph mod 256 is char code to output,\n\ | |
6666f05a | 2637 | and this glyph / 256 is face code for X windows (see `face-id')."); |
4588ec20 JB |
2638 | Vglyph_table = Qnil; |
2639 | ||
2640 | DEFVAR_LISP ("standard-display-table", &Vstandard_display_table, | |
2641 | "Display table to use for buffers that specify none.\n\ | |
2642 | See `buffer-display-table' for more information."); | |
2643 | Vstandard_display_table = Qnil; | |
2644 | ||
2645 | /* Initialize `window-system', unless init_display already decided it. */ | |
2646 | #ifdef CANNOT_DUMP | |
2647 | if (noninteractive) | |
2648 | #endif | |
2649 | { | |
2650 | Vwindow_system = Qnil; | |
2651 | Vwindow_system_version = Qnil; | |
2652 | } | |
2653 | } |