Commit | Line | Data |
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4588ec20 | 1 | /* Updating of data structures for redisplay. |
60a8948a | 2 | Copyright (C) 1985, 86, 87, 88, 93, 94 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 | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | #include <signal.h> | |
2396e3da | 22 | #include <stdio.h> |
4588ec20 | 23 | |
18160b98 | 24 | #include <config.h> |
4588ec20 JB |
25 | #include <ctype.h> |
26 | ||
47099d6f | 27 | #include "lisp.h" |
4588ec20 JB |
28 | #include "termchar.h" |
29 | #include "termopts.h" | |
3be08bea | 30 | #include "termhooks.h" |
4588ec20 | 31 | #include "cm.h" |
4588ec20 JB |
32 | #include "dispextern.h" |
33 | #include "buffer.h" | |
502b9b64 | 34 | #include "frame.h" |
4588ec20 JB |
35 | #include "window.h" |
36 | #include "commands.h" | |
37 | #include "disptab.h" | |
38 | #include "indent.h" | |
d169fe39 | 39 | #include "intervals.h" |
4588ec20 | 40 | |
648fa17d | 41 | #include "systty.h" |
a41f8bed | 42 | |
4588ec20 JB |
43 | #ifdef HAVE_X_WINDOWS |
44 | #include "xterm.h" | |
45 | #endif /* HAVE_X_WINDOWS */ | |
46 | ||
6cbd1643 RS |
47 | /* Include systime.h after xterm.h to avoid double inclusion of time.h. */ |
48 | #include "systime.h" | |
49 | ||
3883a901 RS |
50 | #include <errno.h> |
51 | ||
4588ec20 JB |
52 | #define max(a, b) ((a) > (b) ? (a) : (b)) |
53 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
54 | ||
4588ec20 JB |
55 | /* Get number of chars of output now in the buffer of a stdio stream. |
56 | This ought to be built in in stdio, but it isn't. | |
57 | Some s- files override this because their stdio internals differ. */ | |
e3271ae5 | 58 | #ifdef __GNU_LIBRARY__ |
097c2824 RM |
59 | /* The s- file might have overridden the definition with one that works for |
60 | the system's C library. But we are using the GNU C library, so this is | |
61 | the right definition for every system. */ | |
3883a901 RS |
62 | #ifdef GNU_LIBRARY_PENDING_OUTPUT_COUNT |
63 | #define PENDING_OUTPUT_COUNT GNU_LIBRARY_PENDING_OUTPUT_COUNT | |
64 | #else | |
cb5558ff | 65 | #undef PENDING_OUTPUT_COUNT |
e3271ae5 | 66 | #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->__bufp - (FILE)->__buffer) |
3883a901 RS |
67 | #endif |
68 | #else /* not __GNU_LIBRARY__ */ | |
cb5558ff | 69 | #ifndef PENDING_OUTPUT_COUNT |
4588ec20 JB |
70 | #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_ptr - (FILE)->_base) |
71 | #endif | |
e3271ae5 | 72 | #endif |
4588ec20 | 73 | |
a41f8bed | 74 | /* Nonzero upon entry to redisplay means do not assume anything about |
502b9b64 | 75 | current contents of actual terminal frame; clear and redraw it. */ |
4588ec20 | 76 | |
502b9b64 | 77 | int frame_garbaged; |
4588ec20 JB |
78 | |
79 | /* Nonzero means last display completed. Zero means it was preempted. */ | |
80 | ||
81 | int display_completed; | |
82 | ||
83 | /* Lisp variable visible-bell; enables use of screen-flash | |
84 | instead of audible bell. */ | |
85 | ||
86 | int visible_bell; | |
87 | ||
502b9b64 | 88 | /* Invert the color of the whole frame, at a low level. */ |
4588ec20 JB |
89 | |
90 | int inverse_video; | |
91 | ||
92 | /* Line speed of the terminal. */ | |
93 | ||
94 | int baud_rate; | |
95 | ||
96 | /* nil or a symbol naming the window system under which emacs is | |
97 | running ('x is the only current possibility). */ | |
98 | ||
99 | Lisp_Object Vwindow_system; | |
100 | ||
101 | /* Version number of X windows: 10, 11 or nil. */ | |
102 | Lisp_Object Vwindow_system_version; | |
103 | ||
104 | /* Vector of glyph definitions. Indexed by glyph number, | |
105 | the contents are a string which is how to output the glyph. | |
106 | ||
107 | If Vglyph_table is nil, a glyph is output by using its low 8 bits | |
108 | as a character code. */ | |
109 | ||
110 | Lisp_Object Vglyph_table; | |
111 | ||
112 | /* Display table to use for vectors that don't specify their own. */ | |
113 | ||
114 | Lisp_Object Vstandard_display_table; | |
115 | ||
116 | /* Nonzero means reading single-character input with prompt | |
1113d9db JB |
117 | so put cursor on minibuffer after the prompt. |
118 | positive means at end of text in echo area; | |
119 | negative means at beginning of line. */ | |
4588ec20 JB |
120 | int cursor_in_echo_area; |
121 | \f | |
502b9b64 JB |
122 | /* The currently selected frame. |
123 | In a single-frame version, this variable always remains 0. */ | |
4588ec20 | 124 | |
502b9b64 | 125 | FRAME_PTR selected_frame; |
4588ec20 | 126 | |
502b9b64 JB |
127 | /* A frame which is not just a minibuffer, or 0 if there are no such |
128 | frames. This is usually the most recent such frame that was | |
129 | selected. In a single-frame version, this variable always remains 0. */ | |
130 | FRAME_PTR last_nonminibuf_frame; | |
e5d77022 | 131 | |
502b9b64 | 132 | /* In a single-frame version, the information that would otherwise |
190721ac JB |
133 | exist inside frame objects lives in the following structure instead. |
134 | ||
135 | NOTE: the_only_frame is not checked for garbage collection; don't | |
eb8c3be9 | 136 | store collectible objects in any of its fields! |
190721ac JB |
137 | |
138 | You're not/The only frame in town/... */ | |
4588ec20 | 139 | |
502b9b64 JB |
140 | #ifndef MULTI_FRAME |
141 | struct frame the_only_frame; | |
e5d77022 | 142 | #endif |
4588ec20 JB |
143 | |
144 | /* This is a vector, made larger whenever it isn't large enough, | |
502b9b64 JB |
145 | which is used inside `update_frame' to hold the old contents |
146 | of the FRAME_PHYS_LINES of the frame being updated. */ | |
147 | struct frame_glyphs **ophys_lines; | |
4588ec20 JB |
148 | /* Length of vector currently allocated. */ |
149 | int ophys_lines_length; | |
150 | ||
151 | FILE *termscript; /* Stdio stream being used for copy of all output. */ | |
152 | ||
153 | struct cm Wcm; /* Structure for info on cursor positioning */ | |
154 | ||
155 | extern short ospeed; /* Output speed (from sg_ospeed) */ | |
156 | ||
4588ec20 | 157 | int delayed_size_change; /* 1 means SIGWINCH happened when not safe. */ |
4588ec20 | 158 | \f |
502b9b64 | 159 | #ifdef MULTI_FRAME |
4588ec20 | 160 | |
502b9b64 JB |
161 | DEFUN ("redraw-frame", Fredraw_frame, Sredraw_frame, 1, 1, 0, |
162 | "Clear frame FRAME and output again what is supposed to appear on it.") | |
163 | (frame) | |
164 | Lisp_Object frame; | |
4588ec20 | 165 | { |
502b9b64 | 166 | FRAME_PTR f; |
4588ec20 | 167 | |
502b9b64 JB |
168 | CHECK_LIVE_FRAME (frame, 0); |
169 | f = XFRAME (frame); | |
170 | update_begin (f); | |
4588ec20 | 171 | /* set_terminal_modes (); */ |
502b9b64 | 172 | clear_frame (); |
b6a65ac2 | 173 | clear_frame_records (f); |
502b9b64 | 174 | update_end (f); |
4588ec20 | 175 | fflush (stdout); |
4588ec20 JB |
176 | windows_or_buffers_changed++; |
177 | /* Mark all windows as INaccurate, | |
178 | so that every window will have its redisplay done. */ | |
502b9b64 JB |
179 | mark_window_display_accurate (FRAME_ROOT_WINDOW (f), 0); |
180 | f->garbaged = 0; | |
4588ec20 JB |
181 | return Qnil; |
182 | } | |
183 | ||
502b9b64 JB |
184 | redraw_frame (f) |
185 | FRAME_PTR f; | |
4588ec20 | 186 | { |
502b9b64 JB |
187 | Lisp_Object frame; |
188 | XSET (frame, Lisp_Frame, f); | |
189 | Fredraw_frame (frame); | |
4588ec20 JB |
190 | } |
191 | ||
35f56f96 | 192 | #else |
4588ec20 | 193 | |
d8039c5c | 194 | DEFUN ("redraw-frame", Fredraw_frame, Sredraw_frame, 1, 1, 0, |
35f56f96 JB |
195 | "Clear frame FRAME and output again what is supposed to appear on it.") |
196 | (frame) | |
197 | Lisp_Object frame; | |
4588ec20 JB |
198 | { |
199 | update_begin (0); | |
200 | set_terminal_modes (); | |
502b9b64 | 201 | clear_frame (); |
4588ec20 JB |
202 | update_end (0); |
203 | fflush (stdout); | |
502b9b64 | 204 | clear_frame_records (0); |
4588ec20 JB |
205 | windows_or_buffers_changed++; |
206 | /* Mark all windows as INaccurate, | |
207 | so that every window will have its redisplay done. */ | |
b5c685f4 | 208 | mark_window_display_accurate (FRAME_ROOT_WINDOW (0), 0); |
4588ec20 JB |
209 | return Qnil; |
210 | } | |
211 | ||
35f56f96 JB |
212 | #endif |
213 | ||
214 | DEFUN ("redraw-display", Fredraw_display, Sredraw_display, 0, 0, "", | |
215 | "Clear and redisplay all visible frames.") | |
216 | () | |
217 | { | |
218 | Lisp_Object tail, frame; | |
219 | ||
220 | FOR_EACH_FRAME (tail, frame) | |
9223a96a | 221 | if (FRAME_VISIBLE_P (XFRAME (frame))) |
35f56f96 JB |
222 | Fredraw_frame (frame); |
223 | ||
224 | return Qnil; | |
225 | } | |
226 | ||
9223a96a RS |
227 | /* This is used when frame_garbaged is set. |
228 | Redraw the individual frames marked as garbaged. */ | |
229 | ||
230 | void | |
231 | redraw_garbaged_frames () | |
232 | { | |
233 | Lisp_Object tail, frame; | |
234 | ||
235 | FOR_EACH_FRAME (tail, frame) | |
236 | if (FRAME_VISIBLE_P (XFRAME (frame)) | |
237 | && FRAME_GARBAGED_P (XFRAME (frame))) | |
238 | Fredraw_frame (frame); | |
239 | } | |
240 | ||
4588ec20 | 241 | \f |
502b9b64 JB |
242 | static struct frame_glyphs * |
243 | make_frame_glyphs (frame, empty) | |
244 | register FRAME_PTR frame; | |
4588ec20 JB |
245 | int empty; |
246 | { | |
247 | register int i; | |
502b9b64 JB |
248 | register width = FRAME_WIDTH (frame); |
249 | register height = FRAME_HEIGHT (frame); | |
60a8948a RS |
250 | register struct frame_glyphs *new |
251 | = (struct frame_glyphs *) xmalloc (sizeof (struct frame_glyphs)); | |
4588ec20 | 252 | |
502b9b64 | 253 | SET_GLYPHS_FRAME (new, frame); |
4588ec20 JB |
254 | new->height = height; |
255 | new->width = width; | |
256 | new->used = (int *) xmalloc (height * sizeof (int)); | |
257 | new->glyphs = (GLYPH **) xmalloc (height * sizeof (GLYPH *)); | |
60a8948a | 258 | new->charstarts = (int **) xmalloc (height * sizeof (int *)); |
4588ec20 JB |
259 | new->highlight = (char *) xmalloc (height * sizeof (char)); |
260 | new->enable = (char *) xmalloc (height * sizeof (char)); | |
261 | bzero (new->enable, height * sizeof (char)); | |
262 | new->bufp = (int *) xmalloc (height * sizeof (int)); | |
263 | ||
264 | #ifdef HAVE_X_WINDOWS | |
b6a65ac2 | 265 | if (FRAME_X_P (frame)) |
4588ec20 | 266 | { |
4588ec20 JB |
267 | new->top_left_x = (short *) xmalloc (height * sizeof (short)); |
268 | new->top_left_y = (short *) xmalloc (height * sizeof (short)); | |
269 | new->pix_width = (short *) xmalloc (height * sizeof (short)); | |
270 | new->pix_height = (short *) xmalloc (height * sizeof (short)); | |
448fd7c0 | 271 | new->max_ascent = (short *) xmalloc (height * sizeof (short)); |
4588ec20 JB |
272 | } |
273 | #endif | |
274 | ||
275 | if (empty) | |
276 | { | |
277 | /* Make the buffer used by decode_mode_spec. This buffer is also | |
502b9b64 | 278 | used as temporary storage when updating the frame. See scroll.c. */ |
4588ec20 | 279 | unsigned int total_glyphs = (width + 2) * sizeof (GLYPH); |
d52bad65 | 280 | unsigned int total_charstarts = (width + 2) * sizeof (int); |
4588ec20 JB |
281 | |
282 | new->total_contents = (GLYPH *) xmalloc (total_glyphs); | |
283 | bzero (new->total_contents, total_glyphs); | |
d52bad65 RS |
284 | |
285 | new->total_charstarts = (int *) xmalloc (total_charstarts); | |
286 | bzero (new->total_charstarts, total_glyphs); | |
4588ec20 JB |
287 | } |
288 | else | |
289 | { | |
290 | unsigned int total_glyphs = height * (width + 2) * sizeof (GLYPH); | |
291 | ||
292 | new->total_contents = (GLYPH *) xmalloc (total_glyphs); | |
293 | bzero (new->total_contents, total_glyphs); | |
294 | for (i = 0; i < height; i++) | |
295 | new->glyphs[i] = new->total_contents + i * (width + 2) + 1; | |
60a8948a RS |
296 | |
297 | if (!FRAME_TERMCAP_P (frame)) | |
298 | { | |
299 | unsigned int total_charstarts = height * (width + 2) * sizeof (int); | |
300 | ||
301 | new->total_charstarts = (int *) xmalloc (total_charstarts); | |
302 | bzero (new->total_charstarts, total_charstarts); | |
303 | for (i = 0; i < height; i++) | |
304 | new->charstarts[i] = new->total_charstarts + i * (width + 2) + 1; | |
305 | } | |
306 | else | |
307 | { | |
308 | /* Without a window system, we don't really need charstarts. | |
309 | So use a small amount of space to make enough data structure | |
310 | to prevent crashes in display_text_line. */ | |
311 | new->total_charstarts = (int *) xmalloc ((width + 2) * sizeof (int)); | |
312 | for (i = 0; i < height; i++) | |
313 | new->charstarts[i] = new->total_charstarts; | |
314 | } | |
4588ec20 JB |
315 | } |
316 | ||
317 | return new; | |
318 | } | |
319 | ||
320 | static void | |
502b9b64 JB |
321 | free_frame_glyphs (frame, glyphs) |
322 | FRAME_PTR frame; | |
323 | struct frame_glyphs *glyphs; | |
4588ec20 JB |
324 | { |
325 | if (glyphs->total_contents) | |
9ac0d9e0 | 326 | xfree (glyphs->total_contents); |
60a8948a RS |
327 | if (glyphs->total_charstarts) |
328 | xfree (glyphs->total_charstarts); | |
4588ec20 | 329 | |
9ac0d9e0 JB |
330 | xfree (glyphs->used); |
331 | xfree (glyphs->glyphs); | |
332 | xfree (glyphs->highlight); | |
333 | xfree (glyphs->enable); | |
334 | xfree (glyphs->bufp); | |
60a8948a RS |
335 | if (glyphs->charstarts) |
336 | xfree (glyphs->charstarts); | |
4588ec20 JB |
337 | |
338 | #ifdef HAVE_X_WINDOWS | |
b6a65ac2 | 339 | if (FRAME_X_P (frame)) |
4588ec20 | 340 | { |
9ac0d9e0 JB |
341 | xfree (glyphs->top_left_x); |
342 | xfree (glyphs->top_left_y); | |
343 | xfree (glyphs->pix_width); | |
344 | xfree (glyphs->pix_height); | |
345 | xfree (glyphs->max_ascent); | |
4588ec20 JB |
346 | } |
347 | #endif | |
348 | ||
9ac0d9e0 | 349 | xfree (glyphs); |
4588ec20 JB |
350 | } |
351 | ||
352 | static void | |
502b9b64 JB |
353 | remake_frame_glyphs (frame) |
354 | FRAME_PTR frame; | |
4588ec20 | 355 | { |
502b9b64 JB |
356 | if (FRAME_CURRENT_GLYPHS (frame)) |
357 | free_frame_glyphs (frame, FRAME_CURRENT_GLYPHS (frame)); | |
358 | if (FRAME_DESIRED_GLYPHS (frame)) | |
359 | free_frame_glyphs (frame, FRAME_DESIRED_GLYPHS (frame)); | |
360 | if (FRAME_TEMP_GLYPHS (frame)) | |
361 | free_frame_glyphs (frame, FRAME_TEMP_GLYPHS (frame)); | |
362 | ||
363 | if (FRAME_MESSAGE_BUF (frame)) | |
832a0726 JB |
364 | { |
365 | /* Reallocate the frame's message buffer; remember that | |
366 | echo_area_glyphs may be pointing here. */ | |
367 | char *old_message_buf = FRAME_MESSAGE_BUF (frame); | |
368 | ||
369 | FRAME_MESSAGE_BUF (frame) | |
370 | = (char *) xrealloc (FRAME_MESSAGE_BUF (frame), | |
371 | FRAME_WIDTH (frame) + 1); | |
372 | ||
373 | if (echo_area_glyphs == old_message_buf) | |
374 | echo_area_glyphs = FRAME_MESSAGE_BUF (frame); | |
375 | if (previous_echo_glyphs == old_message_buf) | |
376 | previous_echo_glyphs = FRAME_MESSAGE_BUF (frame); | |
377 | } | |
4588ec20 | 378 | else |
502b9b64 JB |
379 | FRAME_MESSAGE_BUF (frame) |
380 | = (char *) xmalloc (FRAME_WIDTH (frame) + 1); | |
4588ec20 | 381 | |
502b9b64 JB |
382 | FRAME_CURRENT_GLYPHS (frame) = make_frame_glyphs (frame, 0); |
383 | FRAME_DESIRED_GLYPHS (frame) = make_frame_glyphs (frame, 0); | |
384 | FRAME_TEMP_GLYPHS (frame) = make_frame_glyphs (frame, 1); | |
385 | SET_FRAME_GARBAGED (frame); | |
4588ec20 JB |
386 | } |
387 | \f | |
502b9b64 | 388 | /* Return the hash code of contents of line VPOS in frame-matrix M. */ |
4588ec20 JB |
389 | |
390 | static int | |
391 | line_hash_code (m, vpos) | |
502b9b64 | 392 | register struct frame_glyphs *m; |
4588ec20 JB |
393 | int vpos; |
394 | { | |
395 | register GLYPH *body, *end; | |
396 | register int h = 0; | |
397 | ||
398 | if (!m->enable[vpos]) | |
399 | return 0; | |
400 | ||
94aa5d2d | 401 | /* Give all highlighted lines the same hash code |
4588ec20 JB |
402 | so as to encourage scrolling to leave them in place. */ |
403 | if (m->highlight[vpos]) | |
404 | return -1; | |
405 | ||
406 | body = m->glyphs[vpos]; | |
407 | ||
408 | if (must_write_spaces) | |
409 | while (1) | |
410 | { | |
411 | GLYPH g = *body++; | |
412 | ||
413 | if (g == 0) | |
414 | break; | |
415 | h = (((h << 4) + (h >> 24)) & 0x0fffffff) + g - SPACEGLYPH; | |
416 | } | |
417 | else | |
418 | while (1) | |
419 | { | |
420 | GLYPH g = *body++; | |
421 | ||
422 | if (g == 0) | |
423 | break; | |
424 | h = (((h << 4) + (h >> 24)) & 0x0fffffff) + g; | |
425 | } | |
426 | ||
427 | if (h) | |
428 | return h; | |
429 | return 1; | |
430 | } | |
431 | ||
432 | /* Return number of characters in line in M at vpos VPOS, | |
433 | except don't count leading and trailing spaces | |
434 | unless the terminal requires those to be explicitly output. */ | |
435 | ||
436 | static unsigned int | |
437 | line_draw_cost (m, vpos) | |
502b9b64 | 438 | struct frame_glyphs *m; |
4588ec20 JB |
439 | int vpos; |
440 | { | |
441 | register GLYPH *beg = m->glyphs[vpos]; | |
442 | register GLYPH *end = m->glyphs[vpos] + m->used[vpos]; | |
443 | register int i; | |
444 | register int tlen = GLYPH_TABLE_LENGTH; | |
445 | register Lisp_Object *tbase = GLYPH_TABLE_BASE; | |
446 | ||
447 | /* Ignore trailing and leading spaces if we can. */ | |
448 | if (!must_write_spaces) | |
449 | { | |
450 | while ((end != beg) && (*end == SPACEGLYPH)) | |
451 | --end; | |
452 | if (end == beg) | |
453 | return (0); /* All blank line. */ | |
454 | ||
455 | while (*beg == SPACEGLYPH) | |
456 | ++beg; | |
457 | } | |
458 | ||
459 | /* If we don't have a glyph-table, each glyph is one character, | |
460 | so return the number of glyphs. */ | |
461 | if (tbase == 0) | |
462 | return end - beg; | |
463 | ||
464 | /* Otherwise, scan the glyphs and accumulate their total size in I. */ | |
465 | i = 0; | |
466 | while ((beg <= end) && *beg) | |
467 | { | |
468 | register GLYPH g = *beg++; | |
469 | ||
470 | if (GLYPH_SIMPLE_P (tbase, tlen, g)) | |
471 | i += 1; | |
472 | else | |
473 | i += GLYPH_LENGTH (tbase, g); | |
474 | } | |
475 | return i; | |
476 | } | |
477 | \f | |
478 | /* The functions on this page are the interface from xdisp.c to redisplay. | |
479 | ||
480 | The only other interface into redisplay is through setting | |
502b9b64 JB |
481 | FRAME_CURSOR_X (frame) and FRAME_CURSOR_Y (frame) |
482 | and SET_FRAME_GARBAGED (frame). */ | |
4588ec20 JB |
483 | |
484 | /* cancel_line eliminates any request to display a line at position `vpos' */ | |
485 | ||
502b9b64 | 486 | cancel_line (vpos, frame) |
4588ec20 | 487 | int vpos; |
502b9b64 | 488 | register FRAME_PTR frame; |
4588ec20 | 489 | { |
502b9b64 | 490 | FRAME_DESIRED_GLYPHS (frame)->enable[vpos] = 0; |
4588ec20 JB |
491 | } |
492 | ||
502b9b64 JB |
493 | clear_frame_records (frame) |
494 | register FRAME_PTR frame; | |
4588ec20 | 495 | { |
502b9b64 | 496 | bzero (FRAME_CURRENT_GLYPHS (frame)->enable, FRAME_HEIGHT (frame)); |
4588ec20 JB |
497 | } |
498 | ||
499 | /* Prepare to display on line VPOS starting at HPOS within it. */ | |
500 | ||
501 | void | |
502b9b64 JB |
502 | get_display_line (frame, vpos, hpos) |
503 | register FRAME_PTR frame; | |
4588ec20 JB |
504 | int vpos; |
505 | register int hpos; | |
506 | { | |
502b9b64 JB |
507 | register struct frame_glyphs *glyphs; |
508 | register struct frame_glyphs *desired_glyphs = FRAME_DESIRED_GLYPHS (frame); | |
4588ec20 JB |
509 | register GLYPH *p; |
510 | ||
7c3c72ec | 511 | if (vpos < 0) |
4588ec20 JB |
512 | abort (); |
513 | ||
514 | if ((desired_glyphs->enable[vpos]) && desired_glyphs->used[vpos] > hpos) | |
515 | abort (); | |
516 | ||
517 | if (! desired_glyphs->enable[vpos]) | |
518 | { | |
519 | desired_glyphs->used[vpos] = 0; | |
520 | desired_glyphs->highlight[vpos] = 0; | |
521 | desired_glyphs->enable[vpos] = 1; | |
522 | } | |
523 | ||
524 | if (hpos > desired_glyphs->used[vpos]) | |
525 | { | |
526 | GLYPH *g = desired_glyphs->glyphs[vpos] + desired_glyphs->used[vpos]; | |
527 | GLYPH *end = desired_glyphs->glyphs[vpos] + hpos; | |
528 | ||
529 | desired_glyphs->used[vpos] = hpos; | |
530 | while (g != end) | |
531 | *g++ = SPACEGLYPH; | |
532 | } | |
533 | } | |
534 | ||
535 | /* Like bcopy except never gets confused by overlap. */ | |
536 | ||
537 | void | |
538 | safe_bcopy (from, to, size) | |
539 | char *from, *to; | |
540 | int size; | |
541 | { | |
b5c685f4 | 542 | if (size <= 0 || from == to) |
4588ec20 JB |
543 | return; |
544 | ||
b5c685f4 JB |
545 | /* If the source and destination don't overlap, then bcopy can |
546 | handle it. If they do overlap, but the destination is lower in | |
547 | memory than the source, we'll assume bcopy can handle that. */ | |
548 | if (to < from || from + size <= to) | |
549 | bcopy (from, to, size); | |
550 | ||
551 | /* Otherwise, we'll copy from the end. */ | |
552 | else | |
4588ec20 | 553 | { |
b5c685f4 JB |
554 | register char *endf = from + size; |
555 | register char *endt = to + size; | |
4588ec20 JB |
556 | |
557 | /* If TO - FROM is large, then we should break the copy into | |
558 | nonoverlapping chunks of TO - FROM bytes each. However, if | |
559 | TO - FROM is small, then the bcopy function call overhead | |
560 | makes this not worth it. The crossover point could be about | |
b5c685f4 JB |
561 | anywhere. Since I don't think the obvious copy loop is too |
562 | bad, I'm trying to err in its favor. */ | |
4588ec20 JB |
563 | if (to - from < 64) |
564 | { | |
565 | do | |
566 | *--endt = *--endf; | |
567 | while (endf != from); | |
568 | } | |
569 | else | |
570 | { | |
b5c685f4 | 571 | for (;;) |
4588ec20 JB |
572 | { |
573 | endt -= (to - from); | |
574 | endf -= (to - from); | |
575 | ||
b5c685f4 JB |
576 | if (endt < to) |
577 | break; | |
578 | ||
4588ec20 JB |
579 | bcopy (endf, endt, to - from); |
580 | } | |
b5c685f4 JB |
581 | |
582 | /* If SIZE wasn't a multiple of TO - FROM, there will be a | |
4588ec20 JB |
583 | little left over. The amount left over is |
584 | (endt + (to - from)) - to, which is endt - from. */ | |
585 | bcopy (from, to, endt - from); | |
586 | } | |
587 | } | |
4588ec20 JB |
588 | } |
589 | ||
98038dc0 | 590 | /* Rotate a vector of SIZE bytes right, by DISTANCE bytes. |
4588ec20 JB |
591 | DISTANCE may be negative. */ |
592 | ||
593 | static void | |
594 | rotate_vector (vector, size, distance) | |
595 | char *vector; | |
596 | int size; | |
597 | int distance; | |
598 | { | |
599 | char *temp = (char *) alloca (size); | |
600 | ||
601 | if (distance < 0) | |
602 | distance += size; | |
603 | ||
604 | bcopy (vector, temp + distance, size - distance); | |
605 | bcopy (vector + size - distance, temp, distance); | |
606 | bcopy (temp, vector, size); | |
607 | } | |
608 | ||
609 | /* Scroll lines from vpos FROM up to but not including vpos END | |
610 | down by AMOUNT lines (AMOUNT may be negative). | |
611 | Returns nonzero if done, zero if terminal cannot scroll them. */ | |
612 | ||
613 | int | |
d52bad65 | 614 | scroll_frame_lines (frame, from, end, amount, newpos) |
502b9b64 | 615 | register FRAME_PTR frame; |
d52bad65 | 616 | int from, end, amount, newpos; |
4588ec20 JB |
617 | { |
618 | register int i; | |
502b9b64 JB |
619 | register struct frame_glyphs *current_frame |
620 | = FRAME_CURRENT_GLYPHS (frame); | |
d52bad65 | 621 | int pos_adjust; |
23b0200c | 622 | int width = FRAME_WIDTH (frame); |
4588ec20 JB |
623 | |
624 | if (!line_ins_del_ok) | |
625 | return 0; | |
626 | ||
627 | if (amount == 0) | |
628 | return 1; | |
629 | ||
630 | if (amount > 0) | |
631 | { | |
502b9b64 | 632 | update_begin (frame); |
4588ec20 JB |
633 | set_terminal_window (end + amount); |
634 | if (!scroll_region_ok) | |
635 | ins_del_lines (end, -amount); | |
636 | ins_del_lines (from, amount); | |
637 | set_terminal_window (0); | |
638 | ||
502b9b64 | 639 | rotate_vector (current_frame->glyphs + from, |
4588ec20 JB |
640 | sizeof (GLYPH *) * (end + amount - from), |
641 | amount * sizeof (GLYPH *)); | |
642 | ||
60a8948a | 643 | rotate_vector (current_frame->charstarts + from, |
d52bad65 RS |
644 | sizeof (int *) * (end + amount - from), |
645 | amount * sizeof (int *)); | |
646 | ||
23b0200c RS |
647 | safe_bcopy (current_frame->used + from, |
648 | current_frame->used + from + amount, | |
649 | (end - from) * sizeof current_frame->used[0]); | |
650 | ||
651 | safe_bcopy (current_frame->highlight + from, | |
652 | current_frame->highlight + from + amount, | |
653 | (end - from) * sizeof current_frame->highlight[0]); | |
654 | ||
655 | safe_bcopy (current_frame->enable + from, | |
656 | current_frame->enable + from + amount, | |
657 | (end - from) * sizeof current_frame->enable[0]); | |
658 | ||
d52bad65 RS |
659 | /* Adjust the lines by an amount |
660 | that puts the first of them at NEWPOS. */ | |
23b0200c | 661 | pos_adjust = newpos - current_frame->charstarts[from + amount][0]; |
60a8948a RS |
662 | |
663 | /* Offset each char position in the charstarts lines we moved | |
664 | by pos_adjust. */ | |
23b0200c | 665 | for (i = from + amount; i < end + amount; i++) |
60a8948a | 666 | { |
d52bad65 | 667 | int *line = current_frame->charstarts[i]; |
60a8948a | 668 | int col; |
23b0200c RS |
669 | for (col = 0; col < width; col++) |
670 | if (line[col] > 0) | |
671 | line[col] += pos_adjust; | |
60a8948a | 672 | } |
23b0200c | 673 | for (i = from; i < from + amount; i++) |
60a8948a | 674 | { |
d52bad65 | 675 | int *line = current_frame->charstarts[i]; |
60a8948a RS |
676 | int col; |
677 | line[0] = -1; | |
23b0200c | 678 | for (col = 0; col < width; col++) |
60a8948a RS |
679 | line[col] = 0; |
680 | } | |
681 | ||
4588ec20 JB |
682 | /* Mark the lines made empty by scrolling as enabled, empty and |
683 | normal video. */ | |
502b9b64 JB |
684 | bzero (current_frame->used + from, |
685 | amount * sizeof current_frame->used[0]); | |
686 | bzero (current_frame->highlight + from, | |
687 | amount * sizeof current_frame->highlight[0]); | |
4588ec20 JB |
688 | for (i = from; i < from + amount; i++) |
689 | { | |
502b9b64 | 690 | current_frame->glyphs[i][0] = '\0'; |
60a8948a | 691 | current_frame->charstarts[i][0] = -1; |
502b9b64 | 692 | current_frame->enable[i] = 1; |
4588ec20 JB |
693 | } |
694 | ||
502b9b64 JB |
695 | safe_bcopy (current_frame->bufp + from, |
696 | current_frame->bufp + from + amount, | |
697 | (end - from) * sizeof current_frame->bufp[0]); | |
4588ec20 JB |
698 | |
699 | #ifdef HAVE_X_WINDOWS | |
b6a65ac2 | 700 | if (FRAME_X_P (frame)) |
4588ec20 | 701 | { |
502b9b64 JB |
702 | safe_bcopy (current_frame->top_left_x + from, |
703 | current_frame->top_left_x + from + amount, | |
704 | (end - from) * sizeof current_frame->top_left_x[0]); | |
4588ec20 | 705 | |
502b9b64 JB |
706 | safe_bcopy (current_frame->top_left_y + from, |
707 | current_frame->top_left_y + from + amount, | |
708 | (end - from) * sizeof current_frame->top_left_y[0]); | |
4588ec20 | 709 | |
502b9b64 JB |
710 | safe_bcopy (current_frame->pix_width + from, |
711 | current_frame->pix_width + from + amount, | |
712 | (end - from) * sizeof current_frame->pix_width[0]); | |
4588ec20 | 713 | |
502b9b64 JB |
714 | safe_bcopy (current_frame->pix_height + from, |
715 | current_frame->pix_height + from + amount, | |
716 | (end - from) * sizeof current_frame->pix_height[0]); | |
448fd7c0 JA |
717 | |
718 | safe_bcopy (current_frame->max_ascent + from, | |
719 | current_frame->max_ascent + from + amount, | |
720 | (end - from) * sizeof current_frame->max_ascent[0]); | |
4588ec20 JB |
721 | } |
722 | #endif /* HAVE_X_WINDOWS */ | |
723 | ||
502b9b64 | 724 | update_end (frame); |
4588ec20 JB |
725 | } |
726 | if (amount < 0) | |
727 | { | |
502b9b64 | 728 | update_begin (frame); |
4588ec20 JB |
729 | set_terminal_window (end); |
730 | ins_del_lines (from + amount, amount); | |
731 | if (!scroll_region_ok) | |
732 | ins_del_lines (end + amount, -amount); | |
733 | set_terminal_window (0); | |
734 | ||
502b9b64 | 735 | rotate_vector (current_frame->glyphs + from + amount, |
4588ec20 JB |
736 | sizeof (GLYPH *) * (end - from - amount), |
737 | amount * sizeof (GLYPH *)); | |
738 | ||
60a8948a | 739 | rotate_vector (current_frame->charstarts + from + amount, |
d52bad65 RS |
740 | sizeof (int *) * (end - from - amount), |
741 | amount * sizeof (int *)); | |
742 | ||
23b0200c RS |
743 | safe_bcopy (current_frame->used + from, |
744 | current_frame->used + from + amount, | |
745 | (end - from) * sizeof current_frame->used[0]); | |
746 | ||
747 | safe_bcopy (current_frame->highlight + from, | |
748 | current_frame->highlight + from + amount, | |
749 | (end - from) * sizeof current_frame->highlight[0]); | |
750 | ||
751 | safe_bcopy (current_frame->enable + from, | |
752 | current_frame->enable + from + amount, | |
753 | (end - from) * sizeof current_frame->enable[0]); | |
754 | ||
d52bad65 RS |
755 | /* Adjust the lines by an amount |
756 | that puts the first of them at NEWPOS. */ | |
23b0200c | 757 | pos_adjust = newpos - current_frame->charstarts[from + amount][0]; |
60a8948a RS |
758 | |
759 | /* Offset each char position in the charstarts lines we moved | |
760 | by pos_adjust. */ | |
761 | for (i = from + amount; i < end + amount; i++) | |
762 | { | |
d52bad65 | 763 | int *line = current_frame->charstarts[i]; |
60a8948a | 764 | int col; |
23b0200c RS |
765 | for (col = 0; col < width; col++) |
766 | if (line[col] > 0) | |
767 | line[col] += pos_adjust; | |
60a8948a | 768 | } |
23b0200c | 769 | for (i = end + amount; i < end; i++) |
60a8948a | 770 | { |
d52bad65 | 771 | int *line = current_frame->charstarts[i]; |
60a8948a RS |
772 | int col; |
773 | line[0] = -1; | |
23b0200c | 774 | for (col = 0; col < width; col++) |
60a8948a RS |
775 | line[col] = 0; |
776 | } | |
777 | ||
4588ec20 JB |
778 | /* Mark the lines made empty by scrolling as enabled, empty and |
779 | normal video. */ | |
502b9b64 JB |
780 | bzero (current_frame->used + end + amount, |
781 | - amount * sizeof current_frame->used[0]); | |
782 | bzero (current_frame->highlight + end + amount, | |
783 | - amount * sizeof current_frame->highlight[0]); | |
4588ec20 JB |
784 | for (i = end + amount; i < end; i++) |
785 | { | |
502b9b64 | 786 | current_frame->glyphs[i][0] = '\0'; |
60a8948a | 787 | current_frame->charstarts[i][0] = 0; |
502b9b64 | 788 | current_frame->enable[i] = 1; |
4588ec20 JB |
789 | } |
790 | ||
502b9b64 JB |
791 | safe_bcopy (current_frame->bufp + from, |
792 | current_frame->bufp + from + amount, | |
793 | (end - from) * sizeof current_frame->bufp[0]); | |
4588ec20 JB |
794 | |
795 | #ifdef HAVE_X_WINDOWS | |
b6a65ac2 | 796 | if (FRAME_X_P (frame)) |
4588ec20 | 797 | { |
502b9b64 JB |
798 | safe_bcopy (current_frame->top_left_x + from, |
799 | current_frame->top_left_x + from + amount, | |
800 | (end - from) * sizeof current_frame->top_left_x[0]); | |
4588ec20 | 801 | |
502b9b64 JB |
802 | safe_bcopy (current_frame->top_left_y + from, |
803 | current_frame->top_left_y + from + amount, | |
804 | (end - from) * sizeof current_frame->top_left_y[0]); | |
4588ec20 | 805 | |
502b9b64 JB |
806 | safe_bcopy (current_frame->pix_width + from, |
807 | current_frame->pix_width + from + amount, | |
808 | (end - from) * sizeof current_frame->pix_width[0]); | |
4588ec20 | 809 | |
502b9b64 JB |
810 | safe_bcopy (current_frame->pix_height + from, |
811 | current_frame->pix_height + from + amount, | |
812 | (end - from) * sizeof current_frame->pix_height[0]); | |
448fd7c0 JA |
813 | |
814 | safe_bcopy (current_frame->max_ascent + from, | |
815 | current_frame->max_ascent + from + amount, | |
816 | (end - from) * sizeof current_frame->max_ascent[0]); | |
4588ec20 JB |
817 | } |
818 | #endif /* HAVE_X_WINDOWS */ | |
819 | ||
502b9b64 | 820 | update_end (frame); |
4588ec20 JB |
821 | } |
822 | return 1; | |
823 | } | |
824 | \f | |
502b9b64 | 825 | /* After updating a window W that isn't the full frame wide, |
4588ec20 | 826 | copy all the columns that W does not occupy |
502b9b64 JB |
827 | into the FRAME_DESIRED_GLYPHS (frame) from the FRAME_PHYS_GLYPHS (frame) |
828 | so that update_frame will not change those columns. */ | |
4588ec20 JB |
829 | |
830 | preserve_other_columns (w) | |
831 | struct window *w; | |
832 | { | |
833 | register int vpos; | |
502b9b64 JB |
834 | register struct frame_glyphs *current_frame, *desired_frame; |
835 | register FRAME_PTR frame = XFRAME (w->frame); | |
4588ec20 JB |
836 | int start = XFASTINT (w->left); |
837 | int end = XFASTINT (w->left) + XFASTINT (w->width); | |
838 | int bot = XFASTINT (w->top) + XFASTINT (w->height); | |
839 | ||
502b9b64 JB |
840 | current_frame = FRAME_CURRENT_GLYPHS (frame); |
841 | desired_frame = FRAME_DESIRED_GLYPHS (frame); | |
4588ec20 JB |
842 | |
843 | for (vpos = XFASTINT (w->top); vpos < bot; vpos++) | |
844 | { | |
502b9b64 | 845 | if (current_frame->enable[vpos] && desired_frame->enable[vpos]) |
4588ec20 JB |
846 | { |
847 | if (start > 0) | |
848 | { | |
849 | int len; | |
850 | ||
502b9b64 | 851 | bcopy (current_frame->glyphs[vpos], |
aec9f5f6 JB |
852 | desired_frame->glyphs[vpos], |
853 | start * sizeof (current_frame->glyphs[vpos])); | |
60a8948a RS |
854 | bcopy (current_frame->charstarts[vpos], |
855 | desired_frame->charstarts[vpos], | |
856 | start * sizeof (current_frame->charstarts[vpos])); | |
502b9b64 JB |
857 | len = min (start, current_frame->used[vpos]); |
858 | if (desired_frame->used[vpos] < len) | |
859 | desired_frame->used[vpos] = len; | |
4588ec20 | 860 | } |
502b9b64 JB |
861 | if (current_frame->used[vpos] > end |
862 | && desired_frame->used[vpos] < current_frame->used[vpos]) | |
4588ec20 | 863 | { |
502b9b64 | 864 | while (desired_frame->used[vpos] < end) |
60a8948a RS |
865 | { |
866 | int used = desired_frame->used[vpos]++; | |
867 | desired_frame->glyphs[vpos][used] = SPACEGLYPH; | |
868 | desired_frame->glyphs[vpos][used] = 0; | |
869 | } | |
502b9b64 JB |
870 | bcopy (current_frame->glyphs[vpos] + end, |
871 | desired_frame->glyphs[vpos] + end, | |
aec9f5f6 JB |
872 | ((current_frame->used[vpos] - end) |
873 | * sizeof (current_frame->glyphs[vpos]))); | |
60a8948a RS |
874 | bcopy (current_frame->charstarts[vpos] + end, |
875 | desired_frame->charstarts[vpos] + end, | |
876 | ((current_frame->used[vpos] - end) | |
877 | * sizeof (current_frame->charstarts[vpos]))); | |
502b9b64 | 878 | desired_frame->used[vpos] = current_frame->used[vpos]; |
4588ec20 JB |
879 | } |
880 | } | |
881 | } | |
882 | } | |
883 | \f | |
884 | #if 0 | |
885 | ||
502b9b64 | 886 | /* If window w does not need to be updated and isn't the full frame wide, |
4588ec20 | 887 | copy all the columns that w does occupy |
502b9b64 JB |
888 | into the FRAME_DESIRED_LINES (frame) from the FRAME_PHYS_LINES (frame) |
889 | so that update_frame will not change those columns. | |
4588ec20 JB |
890 | |
891 | Have not been able to figure out how to use this correctly. */ | |
892 | ||
893 | preserve_my_columns (w) | |
894 | struct window *w; | |
895 | { | |
896 | register int vpos, fin; | |
502b9b64 JB |
897 | register struct frame_glyphs *l1, *l2; |
898 | register FRAME_PTR frame = XFRAME (w->frame); | |
4588ec20 JB |
899 | int start = XFASTINT (w->left); |
900 | int end = XFASTINT (w->left) + XFASTINT (w->width); | |
901 | int bot = XFASTINT (w->top) + XFASTINT (w->height); | |
902 | ||
903 | for (vpos = XFASTINT (w->top); vpos < bot; vpos++) | |
904 | { | |
502b9b64 JB |
905 | if ((l1 = FRAME_DESIRED_GLYPHS (frame)->glyphs[vpos + 1]) |
906 | && (l2 = FRAME_PHYS_GLYPHS (frame)->glyphs[vpos + 1])) | |
4588ec20 JB |
907 | { |
908 | if (l2->length > start && l1->length < l2->length) | |
909 | { | |
910 | fin = l2->length; | |
911 | if (fin > end) fin = end; | |
912 | while (l1->length < start) | |
913 | l1->body[l1->length++] = ' '; | |
914 | bcopy (l2->body + start, l1->body + start, fin - start); | |
915 | l1->length = fin; | |
916 | } | |
917 | } | |
918 | } | |
919 | } | |
920 | ||
921 | #endif | |
922 | \f | |
b64b3980 | 923 | /* Adjust by ADJUST the charstart values in window W |
23b0200c | 924 | after vpos VPOS, which counts relative to the frame |
b64b3980 RS |
925 | (not relative to W itself). */ |
926 | ||
927 | void | |
928 | adjust_window_charstarts (w, vpos, adjust) | |
929 | struct window *w; | |
930 | int vpos; | |
931 | int adjust; | |
932 | { | |
933 | int left = XFASTINT (w->left); | |
934 | int top = XFASTINT (w->top); | |
23b0200c RS |
935 | int right = left + window_internal_width (w); |
936 | int bottom = top + window_internal_height (w); | |
b64b3980 RS |
937 | int i; |
938 | ||
23b0200c | 939 | for (i = vpos + 1; i < bottom; i++) |
b64b3980 RS |
940 | { |
941 | int *charstart | |
942 | = FRAME_CURRENT_GLYPHS (XFRAME (WINDOW_FRAME (w)))->charstarts[i]; | |
943 | int j; | |
944 | for (j = left; j < right; j++) | |
945 | if (charstart[j] > 0) | |
946 | charstart[j] += adjust; | |
947 | } | |
948 | } | |
23b0200c | 949 | |
352f1545 RS |
950 | /* Check the charstarts values in the area of window W |
951 | for internal consistency. We cannot check that they are "right"; | |
952 | we can only look for something nonsensical. */ | |
953 | ||
23b0200c RS |
954 | verify_charstarts (w) |
955 | struct window *w; | |
956 | { | |
957 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
958 | int i; | |
959 | int top = XFASTINT (w->top); | |
960 | int bottom = top + window_internal_height (w); | |
961 | int left = XFASTINT (w->left); | |
962 | int right = left + window_internal_width (w); | |
963 | int next_line; | |
352f1545 RS |
964 | int truncate = (XINT (w->hscroll) |
965 | || (truncate_partial_width_windows | |
966 | && (XFASTINT (w->width) < FRAME_WIDTH (f))) | |
967 | || !NILP (XBUFFER (w->buffer)->truncate_lines)); | |
23b0200c RS |
968 | |
969 | for (i = top; i < bottom; i++) | |
970 | { | |
971 | int j; | |
972 | int last; | |
352f1545 | 973 | int *charstart = FRAME_CURRENT_GLYPHS (f)->charstarts[i]; |
23b0200c RS |
974 | |
975 | if (i != top) | |
352f1545 RS |
976 | { |
977 | if (truncate) | |
978 | { | |
979 | /* If we are truncating lines, allow a jump | |
980 | in charstarts from one line to the next. */ | |
981 | if (charstart[left] < next_line) | |
982 | abort (); | |
983 | } | |
984 | else | |
985 | { | |
986 | if (charstart[left] != next_line) | |
987 | abort (); | |
988 | } | |
989 | } | |
23b0200c RS |
990 | |
991 | for (j = left; j < right; j++) | |
992 | if (charstart[j] > 0) | |
993 | last = charstart[j]; | |
2e8907d3 RS |
994 | /* Record where the next line should start. */ |
995 | next_line = last; | |
996 | if (BUF_ZV (XBUFFER (w->buffer)) != last) | |
997 | { | |
998 | /* If there's a newline between the two lines, count that. */ | |
999 | int endchar = *BUF_CHAR_ADDRESS (XBUFFER (w->buffer), last); | |
1000 | if (endchar == '\n') | |
1001 | next_line++; | |
1002 | } | |
23b0200c RS |
1003 | } |
1004 | } | |
b64b3980 | 1005 | \f |
4588ec20 JB |
1006 | /* On discovering that the redisplay for a window was no good, |
1007 | cancel the columns of that window, so that when the window is | |
1008 | displayed over again get_display_line will not complain. */ | |
1009 | ||
1010 | cancel_my_columns (w) | |
1011 | struct window *w; | |
1012 | { | |
1013 | register int vpos; | |
60a8948a RS |
1014 | register struct frame_glyphs *desired_glyphs |
1015 | = FRAME_DESIRED_GLYPHS (XFRAME (w->frame)); | |
4588ec20 JB |
1016 | register int start = XFASTINT (w->left); |
1017 | register int bot = XFASTINT (w->top) + XFASTINT (w->height); | |
1018 | ||
1019 | for (vpos = XFASTINT (w->top); vpos < bot; vpos++) | |
1020 | if (desired_glyphs->enable[vpos] | |
1021 | && desired_glyphs->used[vpos] >= start) | |
1022 | desired_glyphs->used[vpos] = start; | |
1023 | } | |
1024 | \f | |
502b9b64 | 1025 | /* These functions try to perform directly and immediately on the frame |
4588ec20 JB |
1026 | the necessary output for one change in the buffer. |
1027 | They may return 0 meaning nothing was done if anything is difficult, | |
1028 | or 1 meaning the output was performed properly. | |
502b9b64 | 1029 | They assume that the frame was up to date before the buffer |
94aa5d2d | 1030 | change being displayed. They make various other assumptions too; |
4588ec20 JB |
1031 | see command_loop_1 where these are called. */ |
1032 | ||
1033 | int | |
1034 | direct_output_for_insert (g) | |
1035 | int g; | |
1036 | { | |
502b9b64 JB |
1037 | register FRAME_PTR frame = selected_frame; |
1038 | register struct frame_glyphs *current_frame | |
1039 | = FRAME_CURRENT_GLYPHS (frame); | |
4588ec20 JB |
1040 | |
1041 | #ifndef COMPILER_REGISTER_BUG | |
1042 | register | |
1043 | #endif /* COMPILER_REGISTER_BUG */ | |
1044 | struct window *w = XWINDOW (selected_window); | |
1045 | #ifndef COMPILER_REGISTER_BUG | |
1046 | register | |
1047 | #endif /* COMPILER_REGISTER_BUG */ | |
502b9b64 | 1048 | int hpos = FRAME_CURSOR_X (frame); |
4588ec20 JB |
1049 | #ifndef COMPILER_REGISTER_BUG |
1050 | register | |
1051 | #endif /* COMPILER_REGISTER_BUG */ | |
502b9b64 | 1052 | int vpos = FRAME_CURSOR_Y (frame); |
4588ec20 | 1053 | |
fa61c701 JB |
1054 | /* Give up if about to continue line. */ |
1055 | if (hpos >= XFASTINT (w->left) + window_internal_width (w) - 1 | |
1056 | ||
4588ec20 JB |
1057 | /* Avoid losing if cursor is in invisible text off left margin */ |
1058 | || (XINT (w->hscroll) && hpos == XFASTINT (w->left)) | |
1059 | ||
1060 | /* Give up if cursor outside window (in minibuf, probably) */ | |
648fa17d | 1061 | || cursor_in_echo_area |
502b9b64 JB |
1062 | || FRAME_CURSOR_Y (frame) < XFASTINT (w->top) |
1063 | || FRAME_CURSOR_Y (frame) >= XFASTINT (w->top) + XFASTINT (w->height) | |
4588ec20 | 1064 | |
502b9b64 | 1065 | /* Give up if cursor not really at FRAME_CURSOR_X, FRAME_CURSOR_Y */ |
4588ec20 JB |
1066 | || !display_completed |
1067 | ||
1068 | /* Give up if buffer appears in two places. */ | |
1069 | || buffer_shared > 1 | |
1070 | ||
d169fe39 RS |
1071 | #ifdef USE_TEXT_PROPERTIES |
1072 | /* Intervals have already been adjusted, point is after the | |
1073 | character that was just inserted. */ | |
ef4d2f9e | 1074 | /* Give up if character is invisible. */ |
d169fe39 RS |
1075 | /* Give up if character has a face property. |
1076 | At the moment we only lose at end of line or end of buffer | |
1077 | and only with faces that have some background */ | |
1078 | /* Instead of wasting time, give up if character has any text properties */ | |
1079 | || ! NILP (Ftext_properties_at (XFASTINT (point - 1), Qnil)) | |
1080 | #endif | |
1081 | ||
4588ec20 JB |
1082 | /* Give up if w is minibuffer and a message is being displayed there */ |
1083 | || (MINI_WINDOW_P (w) && echo_area_glyphs)) | |
1084 | return 0; | |
1085 | ||
517b2e01 JB |
1086 | { |
1087 | #ifdef HAVE_X_WINDOWS | |
1088 | int dummy; | |
90b5299a | 1089 | int face = compute_char_face (frame, w, point - 1, -1, -1, &dummy, point); |
517b2e01 | 1090 | #endif |
a1c3de84 | 1091 | current_frame->glyphs[vpos][hpos] = MAKE_GLYPH (frame, g, face); |
839c7dfb RS |
1092 | current_frame->charstarts[vpos][hpos] = point - 1; |
1093 | /* Record the entry for after the newly inserted character. */ | |
1094 | current_frame->charstarts[vpos][hpos + 1] = point; | |
b64b3980 | 1095 | adjust_window_charstarts (w, vpos, 1); |
517b2e01 | 1096 | } |
4588ec20 JB |
1097 | unchanged_modified = MODIFF; |
1098 | beg_unchanged = GPT - BEG; | |
1099 | XFASTINT (w->last_point) = point; | |
1100 | XFASTINT (w->last_point_x) = hpos; | |
1101 | XFASTINT (w->last_modified) = MODIFF; | |
1102 | ||
1103 | reassert_line_highlight (0, vpos); | |
502b9b64 | 1104 | write_glyphs (¤t_frame->glyphs[vpos][hpos], 1); |
4588ec20 | 1105 | fflush (stdout); |
502b9b64 JB |
1106 | ++FRAME_CURSOR_X (frame); |
1107 | if (hpos == current_frame->used[vpos]) | |
4588ec20 | 1108 | { |
502b9b64 JB |
1109 | current_frame->used[vpos] = hpos + 1; |
1110 | current_frame->glyphs[vpos][hpos + 1] = 0; | |
4588ec20 JB |
1111 | } |
1112 | ||
1113 | return 1; | |
1114 | } | |
1115 | ||
1116 | int | |
1117 | direct_output_forward_char (n) | |
1118 | int n; | |
1119 | { | |
502b9b64 | 1120 | register FRAME_PTR frame = selected_frame; |
4588ec20 | 1121 | register struct window *w = XWINDOW (selected_window); |
d169fe39 | 1122 | int position; |
ea0d86af RS |
1123 | int hpos = FRAME_CURSOR_X (frame); |
1124 | ||
1125 | /* Give up if in truncated text at end of line. */ | |
1126 | if (hpos >= XFASTINT (w->left) + window_internal_width (w) - 1) | |
1127 | return 0; | |
1128 | ||
a9764248 JB |
1129 | /* Avoid losing if cursor is in invisible text off left margin |
1130 | or about to go off either side of window. */ | |
502b9b64 | 1131 | if ((FRAME_CURSOR_X (frame) == XFASTINT (w->left) |
a9764248 JB |
1132 | && (XINT (w->hscroll) || n < 0)) |
1133 | || (n > 0 | |
fa61c701 | 1134 | && (FRAME_CURSOR_X (frame) + 1 >= window_internal_width (w) - 1)) |
648fa17d | 1135 | || cursor_in_echo_area) |
4588ec20 | 1136 | return 0; |
d169fe39 | 1137 | |
de83c314 RS |
1138 | /* Can't use direct output if highlighting a region. */ |
1139 | if (!NILP (Vtransient_mark_mode) && !NILP (current_buffer->mark_active)) | |
1140 | return 0; | |
1141 | ||
d169fe39 RS |
1142 | #ifdef USE_TEXT_PROPERTIES |
1143 | /* Don't use direct output next to an invisible character | |
1144 | since we might need to do something special. */ | |
1145 | ||
2f24f5ac RS |
1146 | XFASTINT (position) = point; |
1147 | if (XFASTINT (position) < ZV | |
294634fb | 1148 | && ! NILP (Fget_char_property (position, |
2f24f5ac | 1149 | Qinvisible, |
294634fb KH |
1150 | selected_window))) |
1151 | return 0; | |
d169fe39 | 1152 | |
2f24f5ac RS |
1153 | XFASTINT (position) = point - 1; |
1154 | if (XFASTINT (position) >= BEGV | |
294634fb | 1155 | && ! NILP (Fget_char_property (position, |
2f24f5ac | 1156 | Qinvisible, |
294634fb KH |
1157 | selected_window))) |
1158 | return 0; | |
d169fe39 RS |
1159 | #endif |
1160 | ||
502b9b64 JB |
1161 | FRAME_CURSOR_X (frame) += n; |
1162 | XFASTINT (w->last_point_x) = FRAME_CURSOR_X (frame); | |
4588ec20 | 1163 | XFASTINT (w->last_point) = point; |
502b9b64 | 1164 | cursor_to (FRAME_CURSOR_Y (frame), FRAME_CURSOR_X (frame)); |
4588ec20 | 1165 | fflush (stdout); |
d169fe39 | 1166 | |
4588ec20 JB |
1167 | return 1; |
1168 | } | |
1169 | \f | |
1170 | static void update_line (); | |
1171 | ||
502b9b64 | 1172 | /* Update frame F based on the data in FRAME_DESIRED_GLYPHS. |
4588ec20 JB |
1173 | Value is nonzero if redisplay stopped due to pending input. |
1174 | FORCE nonzero means do not stop for pending input. */ | |
1175 | ||
1176 | int | |
502b9b64 JB |
1177 | update_frame (f, force, inhibit_hairy_id) |
1178 | FRAME_PTR f; | |
4588ec20 JB |
1179 | int force; |
1180 | int inhibit_hairy_id; | |
1181 | { | |
54633da0 | 1182 | register struct frame_glyphs *current_frame; |
7098a0fa | 1183 | register struct frame_glyphs *desired_frame = 0; |
4588ec20 JB |
1184 | register int i; |
1185 | int pause; | |
1186 | int preempt_count = baud_rate / 2400 + 1; | |
1187 | extern input_pending; | |
1188 | #ifdef HAVE_X_WINDOWS | |
1189 | register int downto, leftmost; | |
1190 | #endif | |
1191 | ||
d88c2b9e RS |
1192 | if (preempt_count <= 0) |
1193 | preempt_count = 1; | |
1194 | ||
502b9b64 | 1195 | if (FRAME_HEIGHT (f) == 0) abort (); /* Some bug zeros some core */ |
4588ec20 JB |
1196 | |
1197 | detect_input_pending (); | |
1198 | if (input_pending && !force) | |
1199 | { | |
1200 | pause = 1; | |
1201 | goto do_pause; | |
1202 | } | |
1203 | ||
502b9b64 | 1204 | update_begin (f); |
4588ec20 JB |
1205 | |
1206 | if (!line_ins_del_ok) | |
1207 | inhibit_hairy_id = 1; | |
1208 | ||
7098a0fa RS |
1209 | /* These are separate to avoid a possible bug in the AIX C compiler. */ |
1210 | current_frame = FRAME_CURRENT_GLYPHS (f); | |
1211 | desired_frame = FRAME_DESIRED_GLYPHS (f); | |
1212 | ||
efb859b4 JB |
1213 | /* See if any of the desired lines are enabled; don't compute for |
1214 | i/d line if just want cursor motion. */ | |
502b9b64 JB |
1215 | for (i = 0; i < FRAME_HEIGHT (f); i++) |
1216 | if (desired_frame->enable[i]) | |
4588ec20 JB |
1217 | break; |
1218 | ||
1219 | /* Try doing i/d line, if not yet inhibited. */ | |
502b9b64 JB |
1220 | if (!inhibit_hairy_id && i < FRAME_HEIGHT (f)) |
1221 | force |= scrolling (f); | |
4588ec20 JB |
1222 | |
1223 | /* Update the individual lines as needed. Do bottom line first. */ | |
1224 | ||
502b9b64 JB |
1225 | if (desired_frame->enable[FRAME_HEIGHT (f) - 1]) |
1226 | update_line (f, FRAME_HEIGHT (f) - 1); | |
4588ec20 JB |
1227 | |
1228 | #ifdef HAVE_X_WINDOWS | |
b6a65ac2 | 1229 | if (FRAME_X_P (f)) |
4588ec20 | 1230 | { |
502b9b64 JB |
1231 | leftmost = downto = f->display.x->internal_border_width; |
1232 | if (desired_frame->enable[0]) | |
4588ec20 | 1233 | { |
502b9b64 JB |
1234 | current_frame->top_left_x[FRAME_HEIGHT (f) - 1] = leftmost; |
1235 | current_frame->top_left_y[FRAME_HEIGHT (f) - 1] | |
1236 | = PIXEL_HEIGHT (f) - f->display.x->internal_border_width | |
448fd7c0 | 1237 | - current_frame->pix_height[FRAME_HEIGHT (f) - 1]; |
502b9b64 JB |
1238 | current_frame->top_left_x[0] = leftmost; |
1239 | current_frame->top_left_y[0] = downto; | |
4588ec20 JB |
1240 | } |
1241 | } | |
1242 | #endif /* HAVE_X_WINDOWS */ | |
1243 | ||
1244 | /* Now update the rest of the lines. */ | |
502b9b64 | 1245 | for (i = 0; i < FRAME_HEIGHT (f) - 1 && (force || !input_pending); i++) |
4588ec20 | 1246 | { |
502b9b64 | 1247 | if (desired_frame->enable[i]) |
4588ec20 | 1248 | { |
b6a65ac2 | 1249 | if (FRAME_TERMCAP_P (f)) |
4588ec20 JB |
1250 | { |
1251 | /* Flush out every so many lines. | |
1252 | Also flush out if likely to have more than 1k buffered | |
1253 | otherwise. I'm told that some telnet connections get | |
1254 | really screwed by more than 1k output at once. */ | |
1255 | int outq = PENDING_OUTPUT_COUNT (stdout); | |
1256 | if (outq > 900 | |
1257 | || (outq > 20 && ((i - 1) % preempt_count == 0))) | |
1258 | { | |
1259 | fflush (stdout); | |
1260 | if (preempt_count == 1) | |
1261 | { | |
a41f8bed JB |
1262 | #ifdef EMACS_OUTQSIZE |
1263 | if (EMACS_OUTQSIZE (0, &outq) < 0) | |
4588ec20 JB |
1264 | /* Probably not a tty. Ignore the error and reset |
1265 | * the outq count. */ | |
1266 | outq = PENDING_OUTPUT_COUNT (stdout); | |
1267 | #endif | |
1268 | outq *= 10; | |
d520f0d2 | 1269 | if (baud_rate <= outq && baud_rate > 0) |
d88c2b9e | 1270 | sleep (outq / baud_rate); |
4588ec20 JB |
1271 | } |
1272 | } | |
1273 | if ((i - 1) % preempt_count == 0) | |
1274 | detect_input_pending (); | |
1275 | } | |
1276 | ||
502b9b64 | 1277 | update_line (f, i); |
4588ec20 | 1278 | #ifdef HAVE_X_WINDOWS |
b6a65ac2 | 1279 | if (FRAME_X_P (f)) |
4588ec20 | 1280 | { |
502b9b64 JB |
1281 | current_frame->top_left_y[i] = downto; |
1282 | current_frame->top_left_x[i] = leftmost; | |
4588ec20 JB |
1283 | } |
1284 | #endif /* HAVE_X_WINDOWS */ | |
1285 | } | |
1286 | ||
e5d77022 | 1287 | #ifdef HAVE_X_WINDOWS |
b6a65ac2 | 1288 | if (FRAME_X_P (f)) |
448fd7c0 | 1289 | downto += current_frame->pix_height[i]; |
e5d77022 | 1290 | #endif |
4588ec20 | 1291 | } |
502b9b64 | 1292 | pause = (i < FRAME_HEIGHT (f) - 1) ? i : 0; |
4588ec20 JB |
1293 | |
1294 | /* Now just clean up termcap drivers and set cursor, etc. */ | |
1295 | if (!pause) | |
1296 | { | |
648fa17d JB |
1297 | if (cursor_in_echo_area |
1298 | && FRAME_HAS_MINIBUF_P (f)) | |
1113d9db | 1299 | { |
648fa17d JB |
1300 | int top = XINT (XWINDOW (FRAME_MINIBUF_WINDOW (f))->top); |
1301 | int row, col; | |
1302 | ||
1303 | if (cursor_in_echo_area < 0) | |
1304 | { | |
1305 | row = top; | |
1306 | col = 0; | |
1307 | } | |
1113d9db | 1308 | else |
648fa17d JB |
1309 | { |
1310 | /* If the minibuffer is several lines high, find the last | |
1311 | line that has any text on it. */ | |
1312 | row = FRAME_HEIGHT (f); | |
1313 | do | |
1314 | { | |
1315 | row--; | |
1316 | if (current_frame->enable[row]) | |
1317 | col = current_frame->used[row]; | |
1318 | else | |
1319 | col = 0; | |
1320 | } | |
1321 | while (row > top && col == 0); | |
1322 | ||
1323 | if (col >= FRAME_WIDTH (f)) | |
1324 | { | |
1325 | col = 0; | |
1326 | if (row < FRAME_HEIGHT (f) - 1) | |
1327 | row++; | |
1328 | } | |
1329 | } | |
1330 | ||
1331 | cursor_to (row, col); | |
1113d9db | 1332 | } |
4588ec20 | 1333 | else |
502b9b64 JB |
1334 | cursor_to (FRAME_CURSOR_Y (f), max (min (FRAME_CURSOR_X (f), |
1335 | FRAME_WIDTH (f) - 1), 0)); | |
4588ec20 JB |
1336 | } |
1337 | ||
502b9b64 | 1338 | update_end (f); |
4588ec20 JB |
1339 | |
1340 | if (termscript) | |
1341 | fflush (termscript); | |
1342 | fflush (stdout); | |
1343 | ||
1344 | /* Here if output is preempted because input is detected. */ | |
1345 | do_pause: | |
1346 | ||
502b9b64 | 1347 | if (FRAME_HEIGHT (f) == 0) abort (); /* Some bug zeros some core */ |
4588ec20 JB |
1348 | display_completed = !pause; |
1349 | ||
f5843453 | 1350 | bzero (FRAME_DESIRED_GLYPHS (f)->enable, FRAME_HEIGHT (f)); |
4588ec20 JB |
1351 | return pause; |
1352 | } | |
1353 | ||
1354 | /* Called when about to quit, to check for doing so | |
1355 | at an improper time. */ | |
1356 | ||
1357 | void | |
1358 | quit_error_check () | |
1359 | { | |
502b9b64 | 1360 | if (FRAME_DESIRED_GLYPHS (selected_frame) == 0) |
4588ec20 | 1361 | return; |
502b9b64 | 1362 | if (FRAME_DESIRED_GLYPHS (selected_frame)->enable[0]) |
4588ec20 | 1363 | abort (); |
502b9b64 | 1364 | if (FRAME_DESIRED_GLYPHS (selected_frame)->enable[FRAME_HEIGHT (selected_frame) - 1]) |
4588ec20 JB |
1365 | abort (); |
1366 | } | |
1367 | \f | |
1368 | /* Decide what insert/delete line to do, and do it */ | |
1369 | ||
1370 | extern void scrolling_1 (); | |
1371 | ||
502b9b64 JB |
1372 | scrolling (frame) |
1373 | FRAME_PTR frame; | |
4588ec20 JB |
1374 | { |
1375 | int unchanged_at_top, unchanged_at_bottom; | |
1376 | int window_size; | |
1377 | int changed_lines; | |
502b9b64 JB |
1378 | int *old_hash = (int *) alloca (FRAME_HEIGHT (frame) * sizeof (int)); |
1379 | int *new_hash = (int *) alloca (FRAME_HEIGHT (frame) * sizeof (int)); | |
1380 | int *draw_cost = (int *) alloca (FRAME_HEIGHT (frame) * sizeof (int)); | |
4588ec20 | 1381 | register int i; |
502b9b64 JB |
1382 | int free_at_end_vpos = FRAME_HEIGHT (frame); |
1383 | register struct frame_glyphs *current_frame = FRAME_CURRENT_GLYPHS (frame); | |
1384 | register struct frame_glyphs *desired_frame = FRAME_DESIRED_GLYPHS (frame); | |
4588ec20 JB |
1385 | |
1386 | /* Compute hash codes of all the lines. | |
1387 | Also calculate number of changed lines, | |
1388 | number of unchanged lines at the beginning, | |
1389 | and number of unchanged lines at the end. */ | |
1390 | ||
1391 | changed_lines = 0; | |
1392 | unchanged_at_top = 0; | |
502b9b64 JB |
1393 | unchanged_at_bottom = FRAME_HEIGHT (frame); |
1394 | for (i = 0; i < FRAME_HEIGHT (frame); i++) | |
4588ec20 JB |
1395 | { |
1396 | /* Give up on this scrolling if some old lines are not enabled. */ | |
502b9b64 | 1397 | if (!current_frame->enable[i]) |
4588ec20 | 1398 | return 0; |
502b9b64 JB |
1399 | old_hash[i] = line_hash_code (current_frame, i); |
1400 | if (! desired_frame->enable[i]) | |
4588ec20 JB |
1401 | new_hash[i] = old_hash[i]; |
1402 | else | |
502b9b64 | 1403 | new_hash[i] = line_hash_code (desired_frame, i); |
4588ec20 JB |
1404 | |
1405 | if (old_hash[i] != new_hash[i]) | |
1406 | { | |
1407 | changed_lines++; | |
502b9b64 | 1408 | unchanged_at_bottom = FRAME_HEIGHT (frame) - i - 1; |
4588ec20 JB |
1409 | } |
1410 | else if (i == unchanged_at_top) | |
1411 | unchanged_at_top++; | |
502b9b64 | 1412 | draw_cost[i] = line_draw_cost (desired_frame, i); |
4588ec20 JB |
1413 | } |
1414 | ||
1415 | /* If changed lines are few, don't allow preemption, don't scroll. */ | |
1416 | if (changed_lines < baud_rate / 2400 | |
502b9b64 | 1417 | || unchanged_at_bottom == FRAME_HEIGHT (frame)) |
4588ec20 JB |
1418 | return 1; |
1419 | ||
502b9b64 | 1420 | window_size = (FRAME_HEIGHT (frame) - unchanged_at_top |
4588ec20 JB |
1421 | - unchanged_at_bottom); |
1422 | ||
1423 | if (scroll_region_ok) | |
1424 | free_at_end_vpos -= unchanged_at_bottom; | |
502b9b64 | 1425 | else if (memory_below_frame) |
4588ec20 JB |
1426 | free_at_end_vpos = -1; |
1427 | ||
1428 | /* If large window, fast terminal and few lines in common between | |
502b9b64 | 1429 | current frame and desired frame, don't bother with i/d calc. */ |
4588ec20 JB |
1430 | if (window_size >= 18 && baud_rate > 2400 |
1431 | && (window_size >= | |
1432 | 10 * scrolling_max_lines_saved (unchanged_at_top, | |
502b9b64 | 1433 | FRAME_HEIGHT (frame) - unchanged_at_bottom, |
4588ec20 JB |
1434 | old_hash, new_hash, draw_cost))) |
1435 | return 0; | |
1436 | ||
502b9b64 | 1437 | scrolling_1 (frame, window_size, unchanged_at_top, unchanged_at_bottom, |
4588ec20 JB |
1438 | draw_cost + unchanged_at_top - 1, |
1439 | old_hash + unchanged_at_top - 1, | |
1440 | new_hash + unchanged_at_top - 1, | |
1441 | free_at_end_vpos - unchanged_at_top); | |
1442 | ||
1443 | return 0; | |
1444 | } | |
1445 | \f | |
1446 | /* Return the offset in its buffer of the character at location col, line | |
1447 | in the given window. */ | |
1448 | int | |
1449 | buffer_posn_from_coords (window, col, line) | |
1450 | struct window *window; | |
1451 | int col, line; | |
1452 | { | |
ef0fdbb1 | 1453 | int hscroll = XINT (window->hscroll); |
4588ec20 JB |
1454 | int window_left = XFASTINT (window->left); |
1455 | ||
1456 | /* The actual width of the window is window->width less one for the | |
efb859b4 JB |
1457 | DISP_CONTINUE_GLYPH, and less one if it's not the rightmost |
1458 | window. */ | |
fa61c701 | 1459 | int window_width = window_internal_width (window) - 1; |
4588ec20 | 1460 | |
efb859b4 | 1461 | int startp = marker_position (window->start); |
4588ec20 JB |
1462 | |
1463 | /* Since compute_motion will only operate on the current buffer, | |
1464 | we need to save the old one and restore it when we're done. */ | |
1465 | struct buffer *old_current_buffer = current_buffer; | |
efb859b4 | 1466 | struct position *posn; |
4588ec20 JB |
1467 | |
1468 | current_buffer = XBUFFER (window->buffer); | |
1469 | ||
502b9b64 JB |
1470 | /* It would be nice if we could use FRAME_CURRENT_GLYPHS (XFRAME |
1471 | (window->frame))->bufp to avoid scanning from the very top of | |
efb859b4 JB |
1472 | the window, but it isn't maintained correctly, and I'm not even |
1473 | sure I will keep it. */ | |
1474 | posn = compute_motion (startp, 0, | |
1475 | (window == XWINDOW (minibuf_window) && startp == 1 | |
ef0fdbb1 KH |
1476 | ? minibuf_prompt_width : 0) |
1477 | + (hscroll ? 1 - hscroll : 0), | |
fb0f454a | 1478 | ZV, line, col, |
e37f06d7 | 1479 | window_width, hscroll, 0, window); |
4588ec20 JB |
1480 | |
1481 | current_buffer = old_current_buffer; | |
1482 | ||
502b9b64 | 1483 | /* compute_motion considers frame points past the end of a line |
efb859b4 JB |
1484 | to be *after* the newline, i.e. at the start of the next line. |
1485 | This is reasonable, but not really what we want. So if the | |
1486 | result is on a line below LINE, back it up one character. */ | |
1487 | if (posn->vpos > line) | |
1488 | return posn->bufpos - 1; | |
1489 | else | |
1490 | return posn->bufpos; | |
4588ec20 JB |
1491 | } |
1492 | \f | |
1493 | static int | |
1494 | count_blanks (r) | |
1495 | register GLYPH *r; | |
1496 | { | |
1497 | register GLYPH *p = r; | |
94aa5d2d RS |
1498 | while (*p++ == SPACEGLYPH); |
1499 | return p - r - 1; | |
4588ec20 JB |
1500 | } |
1501 | ||
1502 | static int | |
1503 | count_match (str1, str2) | |
1504 | GLYPH *str1, *str2; | |
1505 | { | |
1506 | register GLYPH *p1 = str1; | |
1507 | register GLYPH *p2 = str2; | |
1508 | while (*p1++ == *p2++); | |
1509 | return p1 - str1 - 1; | |
1510 | } | |
1511 | ||
1512 | /* Char insertion/deletion cost vector, from term.c */ | |
1513 | extern int *char_ins_del_vector; | |
1514 | ||
945807a3 | 1515 | #define char_ins_del_cost(f) (&char_ins_del_vector[FRAME_WIDTH((f))]) |
4588ec20 JB |
1516 | |
1517 | static void | |
502b9b64 JB |
1518 | update_line (frame, vpos) |
1519 | register FRAME_PTR frame; | |
4588ec20 JB |
1520 | int vpos; |
1521 | { | |
1522 | register GLYPH *obody, *nbody, *op1, *op2, *np1, *temp; | |
60a8948a | 1523 | int *temp1; |
4588ec20 JB |
1524 | int tem; |
1525 | int osp, nsp, begmatch, endmatch, olen, nlen; | |
1526 | int save; | |
502b9b64 JB |
1527 | register struct frame_glyphs *current_frame |
1528 | = FRAME_CURRENT_GLYPHS (frame); | |
1529 | register struct frame_glyphs *desired_frame | |
1530 | = FRAME_DESIRED_GLYPHS (frame); | |
4588ec20 | 1531 | |
502b9b64 JB |
1532 | if (desired_frame->highlight[vpos] |
1533 | != (current_frame->enable[vpos] && current_frame->highlight[vpos])) | |
4588ec20 | 1534 | { |
502b9b64 JB |
1535 | change_line_highlight (desired_frame->highlight[vpos], vpos, |
1536 | (current_frame->enable[vpos] ? | |
1537 | current_frame->used[vpos] : 0)); | |
1538 | current_frame->enable[vpos] = 0; | |
4588ec20 JB |
1539 | } |
1540 | else | |
502b9b64 | 1541 | reassert_line_highlight (desired_frame->highlight[vpos], vpos); |
4588ec20 | 1542 | |
502b9b64 | 1543 | if (! current_frame->enable[vpos]) |
4588ec20 JB |
1544 | { |
1545 | olen = 0; | |
1546 | } | |
1547 | else | |
1548 | { | |
502b9b64 JB |
1549 | obody = current_frame->glyphs[vpos]; |
1550 | olen = current_frame->used[vpos]; | |
1551 | if (! current_frame->highlight[vpos]) | |
4588ec20 JB |
1552 | { |
1553 | if (!must_write_spaces) | |
1554 | while (obody[olen - 1] == SPACEGLYPH && olen > 0) | |
1555 | olen--; | |
1556 | } | |
1557 | else | |
1558 | { | |
1559 | /* For an inverse-video line, remember we gave it | |
502b9b64 | 1560 | spaces all the way to the frame edge |
4588ec20 JB |
1561 | so that the reverse video extends all the way across. */ |
1562 | ||
502b9b64 | 1563 | while (olen < FRAME_WIDTH (frame) - 1) |
4588ec20 JB |
1564 | obody[olen++] = SPACEGLYPH; |
1565 | } | |
1566 | } | |
1567 | ||
1568 | /* One way or another, this will enable the line being updated. */ | |
502b9b64 JB |
1569 | current_frame->enable[vpos] = 1; |
1570 | current_frame->used[vpos] = desired_frame->used[vpos]; | |
1571 | current_frame->highlight[vpos] = desired_frame->highlight[vpos]; | |
1572 | current_frame->bufp[vpos] = desired_frame->bufp[vpos]; | |
4588ec20 JB |
1573 | |
1574 | #ifdef HAVE_X_WINDOWS | |
b6a65ac2 | 1575 | if (FRAME_X_P (frame)) |
4588ec20 | 1576 | { |
502b9b64 JB |
1577 | current_frame->pix_width[vpos] |
1578 | = current_frame->used[vpos] | |
1579 | * FONT_WIDTH (frame->display.x->font); | |
1580 | current_frame->pix_height[vpos] | |
39d1fe00 | 1581 | = frame->display.x->line_height; |
4588ec20 JB |
1582 | } |
1583 | #endif /* HAVE_X_WINDOWS */ | |
1584 | ||
502b9b64 | 1585 | if (!desired_frame->enable[vpos]) |
4588ec20 JB |
1586 | { |
1587 | nlen = 0; | |
1588 | goto just_erase; | |
1589 | } | |
1590 | ||
502b9b64 JB |
1591 | nbody = desired_frame->glyphs[vpos]; |
1592 | nlen = desired_frame->used[vpos]; | |
4588ec20 JB |
1593 | |
1594 | /* Pretend trailing spaces are not there at all, | |
1595 | unless for one reason or another we must write all spaces. */ | |
502b9b64 | 1596 | if (! desired_frame->highlight[vpos]) |
4588ec20 JB |
1597 | { |
1598 | if (!must_write_spaces) | |
1599 | /* We know that the previous character byte contains 0. */ | |
1600 | while (nbody[nlen - 1] == SPACEGLYPH) | |
1601 | nlen--; | |
1602 | } | |
1603 | else | |
1604 | { | |
1605 | /* For an inverse-video line, give it extra trailing spaces | |
502b9b64 | 1606 | all the way to the frame edge |
4588ec20 JB |
1607 | so that the reverse video extends all the way across. */ |
1608 | ||
502b9b64 | 1609 | while (nlen < FRAME_WIDTH (frame) - 1) |
4588ec20 JB |
1610 | nbody[nlen++] = SPACEGLYPH; |
1611 | } | |
1612 | ||
1613 | /* If there's no i/d char, quickly do the best we can without it. */ | |
1614 | if (!char_ins_del_ok) | |
1615 | { | |
1616 | int i,j; | |
1617 | ||
76426794 RS |
1618 | #if 0 |
1619 | if (FRAME_X_P (frame)) | |
1620 | { | |
1621 | /* Under X, erase everything we are going to rewrite, | |
1622 | and rewrite everything from the first char that's changed. | |
1623 | This is part of supporting fonts like Courier | |
1624 | whose chars can overlap outside the char width. */ | |
1625 | for (i = 0; i < nlen; i++) | |
1626 | if (i >= olen || nbody[i] != obody[i]) | |
1627 | break; | |
1628 | ||
1629 | cursor_to (vpos, i); | |
1630 | if (i != olen) | |
1631 | clear_end_of_line (olen); | |
1632 | write_glyphs (nbody + i, nlen - i); | |
1633 | } | |
1634 | else | |
1635 | {} | |
1636 | #endif /* 0 */ | |
4588ec20 JB |
1637 | for (i = 0; i < nlen; i++) |
1638 | { | |
1639 | if (i >= olen || nbody[i] != obody[i]) /* A non-matching char. */ | |
1640 | { | |
1641 | cursor_to (vpos, i); | |
1642 | for (j = 1; (i + j < nlen && | |
1643 | (i + j >= olen || nbody[i+j] != obody[i+j])); | |
1644 | j++); | |
1645 | ||
1646 | /* Output this run of non-matching chars. */ | |
1647 | write_glyphs (nbody + i, j); | |
1648 | i += j - 1; | |
1649 | ||
1650 | /* Now find the next non-match. */ | |
1651 | } | |
1652 | } | |
1653 | ||
1654 | /* Clear the rest of the line, or the non-clear part of it. */ | |
1655 | if (olen > nlen) | |
1656 | { | |
1657 | cursor_to (vpos, nlen); | |
1658 | clear_end_of_line (olen); | |
1659 | } | |
1660 | ||
502b9b64 JB |
1661 | /* Exchange contents between current_frame and new_frame. */ |
1662 | temp = desired_frame->glyphs[vpos]; | |
1663 | desired_frame->glyphs[vpos] = current_frame->glyphs[vpos]; | |
1664 | current_frame->glyphs[vpos] = temp; | |
4588ec20 | 1665 | |
60a8948a RS |
1666 | /* Exchange charstarts between current_frame and new_frame. */ |
1667 | temp1 = desired_frame->charstarts[vpos]; | |
1668 | desired_frame->charstarts[vpos] = current_frame->charstarts[vpos]; | |
1669 | current_frame->charstarts[vpos] = temp1; | |
1670 | ||
4588ec20 JB |
1671 | return; |
1672 | } | |
1673 | ||
1674 | if (!olen) | |
1675 | { | |
502b9b64 | 1676 | nsp = (must_write_spaces || desired_frame->highlight[vpos]) |
4588ec20 JB |
1677 | ? 0 : count_blanks (nbody); |
1678 | if (nlen > nsp) | |
1679 | { | |
1680 | cursor_to (vpos, nsp); | |
1681 | write_glyphs (nbody + nsp, nlen - nsp); | |
1682 | } | |
1683 | ||
502b9b64 JB |
1684 | /* Exchange contents between current_frame and new_frame. */ |
1685 | temp = desired_frame->glyphs[vpos]; | |
1686 | desired_frame->glyphs[vpos] = current_frame->glyphs[vpos]; | |
1687 | current_frame->glyphs[vpos] = temp; | |
4588ec20 | 1688 | |
60a8948a RS |
1689 | /* Exchange charstarts between current_frame and new_frame. */ |
1690 | temp1 = desired_frame->charstarts[vpos]; | |
1691 | desired_frame->charstarts[vpos] = current_frame->charstarts[vpos]; | |
1692 | current_frame->charstarts[vpos] = temp1; | |
1693 | ||
4588ec20 JB |
1694 | return; |
1695 | } | |
1696 | ||
1697 | obody[olen] = 1; | |
1698 | save = nbody[nlen]; | |
1699 | nbody[nlen] = 0; | |
1700 | ||
1701 | /* Compute number of leading blanks in old and new contents. */ | |
1702 | osp = count_blanks (obody); | |
502b9b64 | 1703 | if (!desired_frame->highlight[vpos]) |
4588ec20 JB |
1704 | nsp = count_blanks (nbody); |
1705 | else | |
1706 | nsp = 0; | |
1707 | ||
1708 | /* Compute number of matching chars starting with first nonblank. */ | |
1709 | begmatch = count_match (obody + osp, nbody + nsp); | |
1710 | ||
1711 | /* Spaces in new match implicit space past the end of old. */ | |
1712 | /* A bug causing this to be a no-op was fixed in 18.29. */ | |
1713 | if (!must_write_spaces && osp + begmatch == olen) | |
1714 | { | |
1715 | np1 = nbody + nsp; | |
1716 | while (np1[begmatch] == SPACEGLYPH) | |
1717 | begmatch++; | |
1718 | } | |
1719 | ||
1720 | /* Avoid doing insert/delete char | |
1721 | just cause number of leading spaces differs | |
1722 | when the following text does not match. */ | |
1723 | if (begmatch == 0 && osp != nsp) | |
1724 | osp = nsp = min (osp, nsp); | |
1725 | ||
1726 | /* Find matching characters at end of line */ | |
1727 | op1 = obody + olen; | |
1728 | np1 = nbody + nlen; | |
1729 | op2 = op1 + begmatch - min (olen - osp, nlen - nsp); | |
1730 | while (op1 > op2 && op1[-1] == np1[-1]) | |
1731 | { | |
1732 | op1--; | |
1733 | np1--; | |
1734 | } | |
1735 | endmatch = obody + olen - op1; | |
1736 | ||
1737 | /* Put correct value back in nbody[nlen]. | |
1738 | This is important because direct_output_for_insert | |
1739 | can write into the line at a later point. | |
1740 | If this screws up the zero at the end of the line, re-establish it. */ | |
1741 | nbody[nlen] = save; | |
1742 | obody[olen] = 0; | |
1743 | ||
1744 | /* tem gets the distance to insert or delete. | |
1745 | endmatch is how many characters we save by doing so. | |
1746 | Is it worth it? */ | |
1747 | ||
1748 | tem = (nlen - nsp) - (olen - osp); | |
1749 | if (endmatch && tem | |
502b9b64 | 1750 | && (!char_ins_del_ok || endmatch <= char_ins_del_cost (frame)[tem])) |
4588ec20 JB |
1751 | endmatch = 0; |
1752 | ||
1753 | /* nsp - osp is the distance to insert or delete. | |
1754 | If that is nonzero, begmatch is known to be nonzero also. | |
1755 | begmatch + endmatch is how much we save by doing the ins/del. | |
1756 | Is it worth it? */ | |
1757 | ||
1758 | if (nsp != osp | |
1759 | && (!char_ins_del_ok | |
502b9b64 | 1760 | || begmatch + endmatch <= char_ins_del_cost (frame)[nsp - osp])) |
4588ec20 JB |
1761 | { |
1762 | begmatch = 0; | |
1763 | endmatch = 0; | |
1764 | osp = nsp = min (osp, nsp); | |
1765 | } | |
1766 | ||
1767 | /* Now go through the line, inserting, writing and | |
1768 | deleting as appropriate. */ | |
1769 | ||
1770 | if (osp > nsp) | |
1771 | { | |
1772 | cursor_to (vpos, nsp); | |
1773 | delete_glyphs (osp - nsp); | |
1774 | } | |
1775 | else if (nsp > osp) | |
1776 | { | |
1777 | /* If going to delete chars later in line | |
1778 | and insert earlier in the line, | |
1779 | must delete first to avoid losing data in the insert */ | |
1780 | if (endmatch && nlen < olen + nsp - osp) | |
1781 | { | |
1782 | cursor_to (vpos, nlen - endmatch + osp - nsp); | |
1783 | delete_glyphs (olen + nsp - osp - nlen); | |
1784 | olen = nlen - (nsp - osp); | |
1785 | } | |
1786 | cursor_to (vpos, osp); | |
1787 | insert_glyphs ((char *)0, nsp - osp); | |
1788 | } | |
1789 | olen += nsp - osp; | |
1790 | ||
1791 | tem = nsp + begmatch + endmatch; | |
1792 | if (nlen != tem || olen != tem) | |
1793 | { | |
1794 | cursor_to (vpos, nsp + begmatch); | |
1795 | if (!endmatch || nlen == olen) | |
1796 | { | |
1797 | /* If new text being written reaches right margin, | |
1798 | there is no need to do clear-to-eol at the end. | |
1799 | (and it would not be safe, since cursor is not | |
1800 | going to be "at the margin" after the text is done) */ | |
502b9b64 | 1801 | if (nlen == FRAME_WIDTH (frame)) |
4588ec20 JB |
1802 | olen = 0; |
1803 | write_glyphs (nbody + nsp + begmatch, nlen - tem); | |
1804 | ||
1805 | #ifdef obsolete | |
1806 | ||
1807 | /* the following code loses disastrously if tem == nlen. | |
1808 | Rather than trying to fix that case, I am trying the simpler | |
1809 | solution found above. */ | |
1810 | ||
1811 | /* If the text reaches to the right margin, | |
1812 | it will lose one way or another (depending on AutoWrap) | |
1813 | to clear to end of line after outputting all the text. | |
1814 | So pause with one character to go and clear the line then. */ | |
502b9b64 | 1815 | if (nlen == FRAME_WIDTH (frame) && fast_clear_end_of_line && olen > nlen) |
4588ec20 JB |
1816 | { |
1817 | /* endmatch must be zero, and tem must equal nsp + begmatch */ | |
1818 | write_glyphs (nbody + tem, nlen - tem - 1); | |
1819 | clear_end_of_line (olen); | |
1820 | olen = 0; /* Don't let it be cleared again later */ | |
1821 | write_glyphs (nbody + nlen - 1, 1); | |
1822 | } | |
1823 | else | |
1824 | write_glyphs (nbody + nsp + begmatch, nlen - tem); | |
1825 | #endif /* OBSOLETE */ | |
1826 | ||
1827 | } | |
1828 | else if (nlen > olen) | |
1829 | { | |
1830 | write_glyphs (nbody + nsp + begmatch, olen - tem); | |
1831 | insert_glyphs (nbody + nsp + begmatch + olen - tem, nlen - olen); | |
1832 | olen = nlen; | |
1833 | } | |
1834 | else if (olen > nlen) | |
1835 | { | |
1836 | write_glyphs (nbody + nsp + begmatch, nlen - tem); | |
1837 | delete_glyphs (olen - nlen); | |
1838 | olen = nlen; | |
1839 | } | |
1840 | } | |
1841 | ||
1842 | just_erase: | |
1843 | /* If any unerased characters remain after the new line, erase them. */ | |
1844 | if (olen > nlen) | |
1845 | { | |
1846 | cursor_to (vpos, nlen); | |
1847 | clear_end_of_line (olen); | |
1848 | } | |
1849 | ||
502b9b64 JB |
1850 | /* Exchange contents between current_frame and new_frame. */ |
1851 | temp = desired_frame->glyphs[vpos]; | |
1852 | desired_frame->glyphs[vpos] = current_frame->glyphs[vpos]; | |
1853 | current_frame->glyphs[vpos] = temp; | |
60a8948a RS |
1854 | |
1855 | /* Exchange charstarts between current_frame and new_frame. */ | |
1856 | temp1 = desired_frame->charstarts[vpos]; | |
1857 | desired_frame->charstarts[vpos] = current_frame->charstarts[vpos]; | |
1858 | current_frame->charstarts[vpos] = temp1; | |
4588ec20 JB |
1859 | } |
1860 | \f | |
078b3696 KH |
1861 | /* A vector of size NFRAMES + 3 * NBUFFERS + 1, containing the session's |
1862 | frames, buffers, buffer-read-only flags, and buffer-modified-flags, | |
1863 | and a trailing sentinel (so we don't need to add length checks). */ | |
1864 | static Lisp_Object frame_and_buffer_state; | |
1865 | ||
1866 | DEFUN ("frame-or-buffer-changed-p", Fframe_or_buffer_changed_p, | |
1867 | Sframe_or_buffer_changed_p, 0, 0, 0, | |
1868 | "Return non-nil if the frame and buffer state appears to have changed.\n\ | |
1869 | The state variable is an internal vector containing all frames and buffers,\n\ | |
1870 | along with the buffers' read-only and modified flags, which allows a fast\n\ | |
1871 | check to see whether the menu bars might need to be recomputed.\n\ | |
1872 | If this function returns non-nil, it updates the internal vector to reflect\n\ | |
1873 | the current state.\n") | |
1874 | () | |
1875 | { | |
1876 | Lisp_Object tail, frame, buf; | |
1877 | Lisp_Object *vecp; | |
1878 | int n; | |
1879 | vecp = XVECTOR (frame_and_buffer_state)->contents; | |
1880 | FOR_EACH_FRAME (tail, frame) | |
1881 | if (!EQ (*vecp++, frame)) | |
1882 | goto changed; | |
1883 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1884 | { | |
1885 | buf = XCONS (XCONS (tail)->car)->cdr; | |
1886 | if (!EQ (*vecp++, buf)) | |
1887 | goto changed; | |
1888 | if (!EQ (*vecp++, XBUFFER (buf)->read_only)) | |
1889 | goto changed; | |
1890 | if (!EQ (*vecp++, Fbuffer_modified_p (buf))) | |
1891 | goto changed; | |
1892 | } | |
1893 | return Qnil; | |
1894 | changed: | |
1895 | n = 1; | |
1896 | FOR_EACH_FRAME (tail, frame) | |
1897 | n++; | |
1898 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1899 | n += 3; | |
1900 | frame_and_buffer_state = Fmake_vector (make_number (n), Qlambda); | |
1901 | vecp = XVECTOR (frame_and_buffer_state)->contents; | |
1902 | FOR_EACH_FRAME (tail, frame) | |
1903 | *vecp++ = frame; | |
1904 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1905 | { | |
1906 | buf = XCONS (XCONS (tail)->car)->cdr; | |
1907 | *vecp++ = buf; | |
1908 | *vecp++ = XBUFFER (buf)->read_only; | |
1909 | *vecp++ = Fbuffer_modified_p (buf); | |
1910 | } | |
1911 | return Qt; | |
1912 | } | |
1913 | \f | |
4588ec20 JB |
1914 | DEFUN ("open-termscript", Fopen_termscript, Sopen_termscript, |
1915 | 1, 1, "FOpen termscript file: ", | |
1916 | "Start writing all terminal output to FILE as well as the terminal.\n\ | |
1917 | FILE = nil means just close any termscript file currently open.") | |
1918 | (file) | |
1919 | Lisp_Object file; | |
1920 | { | |
1921 | if (termscript != 0) fclose (termscript); | |
1922 | termscript = 0; | |
1923 | ||
efb859b4 | 1924 | if (! NILP (file)) |
4588ec20 JB |
1925 | { |
1926 | file = Fexpand_file_name (file, Qnil); | |
1927 | termscript = fopen (XSTRING (file)->data, "w"); | |
1928 | if (termscript == 0) | |
1929 | report_file_error ("Opening termscript", Fcons (file, Qnil)); | |
1930 | } | |
1931 | return Qnil; | |
1932 | } | |
1933 | \f | |
1934 | ||
1935 | #ifdef SIGWINCH | |
efb859b4 | 1936 | SIGTYPE |
4588ec20 JB |
1937 | window_change_signal () |
1938 | { | |
1939 | int width, height; | |
1940 | extern int errno; | |
1941 | int old_errno = errno; | |
1942 | ||
502b9b64 | 1943 | get_frame_size (&width, &height); |
4588ec20 | 1944 | |
502b9b64 JB |
1945 | /* The frame size change obviously applies to a termcap-controlled |
1946 | frame. Find such a frame in the list, and assume it's the only | |
4588ec20 | 1947 | one (since the redisplay code always writes to stdout, not a |
502b9b64 | 1948 | FILE * specified in the frame structure). Record the new size, |
4588ec20 JB |
1949 | but don't reallocate the data structures now. Let that be done |
1950 | later outside of the signal handler. */ | |
1951 | ||
1952 | { | |
35f56f96 | 1953 | Lisp_Object tail, frame; |
4588ec20 | 1954 | |
35f56f96 | 1955 | FOR_EACH_FRAME (tail, frame) |
4588ec20 | 1956 | { |
35f56f96 | 1957 | if (FRAME_TERMCAP_P (XFRAME (frame))) |
4588ec20 | 1958 | { |
35f56f96 | 1959 | change_frame_size (XFRAME (frame), height, width, 0, 1); |
4588ec20 JB |
1960 | break; |
1961 | } | |
1962 | } | |
1963 | } | |
1964 | ||
1965 | signal (SIGWINCH, window_change_signal); | |
1966 | errno = old_errno; | |
1967 | } | |
1968 | #endif /* SIGWINCH */ | |
1969 | ||
1970 | ||
502b9b64 | 1971 | /* Do any change in frame size that was requested by a signal. */ |
4588ec20 JB |
1972 | |
1973 | do_pending_window_change () | |
1974 | { | |
1975 | /* If window_change_signal should have run before, run it now. */ | |
1976 | while (delayed_size_change) | |
1977 | { | |
35f56f96 | 1978 | Lisp_Object tail, frame; |
4588ec20 JB |
1979 | |
1980 | delayed_size_change = 0; | |
1981 | ||
35f56f96 | 1982 | FOR_EACH_FRAME (tail, frame) |
4588ec20 | 1983 | { |
35f56f96 JB |
1984 | FRAME_PTR f = XFRAME (frame); |
1985 | ||
502b9b64 JB |
1986 | int height = FRAME_NEW_HEIGHT (f); |
1987 | int width = FRAME_NEW_WIDTH (f); | |
4588ec20 | 1988 | |
08f7aa3e | 1989 | if (height != 0 || width != 0) |
b6a65ac2 | 1990 | change_frame_size (f, height, width, 0, 0); |
4588ec20 JB |
1991 | } |
1992 | } | |
1993 | } | |
1994 | ||
1995 | ||
502b9b64 | 1996 | /* Change the frame height and/or width. Values may be given as zero to |
b6a65ac2 | 1997 | indicate no change is to take place. |
4588ec20 | 1998 | |
b6a65ac2 JB |
1999 | If DELAY is non-zero, then assume we're being called from a signal |
2000 | handler, and queue the change for later - perhaps the next | |
2001 | redisplay. Since this tries to resize windows, we can't call it | |
2002 | from a signal handler. */ | |
2003 | ||
2004 | change_frame_size (frame, newheight, newwidth, pretend, delay) | |
502b9b64 | 2005 | register FRAME_PTR frame; |
b6a65ac2 | 2006 | int newheight, newwidth, pretend; |
4588ec20 JB |
2007 | { |
2008 | /* If we can't deal with the change now, queue it for later. */ | |
b6a65ac2 | 2009 | if (delay) |
4588ec20 | 2010 | { |
b6a65ac2 | 2011 | FRAME_NEW_HEIGHT (frame) = newheight; |
502b9b64 | 2012 | FRAME_NEW_WIDTH (frame) = newwidth; |
4588ec20 JB |
2013 | delayed_size_change = 1; |
2014 | return; | |
2015 | } | |
2016 | ||
502b9b64 JB |
2017 | /* This size-change overrides any pending one for this frame. */ |
2018 | FRAME_NEW_HEIGHT (frame) = 0; | |
b6a65ac2 JB |
2019 | FRAME_NEW_WIDTH (frame) = 0; |
2020 | ||
08f7aa3e | 2021 | /* If an argument is zero, set it to the current value. */ |
b6a65ac2 JB |
2022 | newheight || (newheight = FRAME_HEIGHT (frame)); |
2023 | newwidth || (newwidth = FRAME_WIDTH (frame)); | |
4588ec20 | 2024 | |
b6a65ac2 JB |
2025 | /* Round up to the smallest acceptable size. */ |
2026 | check_frame_size (frame, &newheight, &newwidth); | |
2027 | ||
2028 | /* If we're not changing the frame size, quit now. */ | |
2029 | if (newheight == FRAME_HEIGHT (frame) | |
2030 | && newwidth == FRAME_WIDTH (frame)) | |
4588ec20 JB |
2031 | return; |
2032 | ||
b6a65ac2 | 2033 | if (newheight != FRAME_HEIGHT (frame)) |
4588ec20 | 2034 | { |
b6a65ac2 | 2035 | if (FRAME_HAS_MINIBUF_P (frame) |
502b9b64 | 2036 | && ! FRAME_MINIBUF_ONLY_P (frame)) |
4588ec20 | 2037 | { |
502b9b64 JB |
2038 | /* Frame has both root and minibuffer. */ |
2039 | set_window_height (FRAME_ROOT_WINDOW (frame), | |
cb470ab1 | 2040 | newheight - 1 - FRAME_MENU_BAR_LINES (frame), 0); |
502b9b64 | 2041 | XFASTINT (XWINDOW (FRAME_MINIBUF_WINDOW (frame))->top) |
b6a65ac2 | 2042 | = newheight - 1; |
502b9b64 | 2043 | set_window_height (FRAME_MINIBUF_WINDOW (frame), 1, 0); |
4588ec20 JB |
2044 | } |
2045 | else | |
502b9b64 | 2046 | /* Frame has just one top-level window. */ |
cb470ab1 RS |
2047 | set_window_height (FRAME_ROOT_WINDOW (frame), |
2048 | newheight - FRAME_MENU_BAR_LINES (frame), 0); | |
b6a65ac2 JB |
2049 | |
2050 | if (FRAME_TERMCAP_P (frame) && !pretend) | |
2051 | FrameRows = newheight; | |
4588ec20 JB |
2052 | |
2053 | #if 0 | |
502b9b64 | 2054 | if (frame->output_method == output_termcap) |
4588ec20 | 2055 | { |
b6a65ac2 | 2056 | frame_height = newheight; |
4588ec20 | 2057 | if (!pretend) |
b6a65ac2 | 2058 | FrameRows = newheight; |
4588ec20 JB |
2059 | } |
2060 | #endif | |
2061 | } | |
2062 | ||
b6a65ac2 | 2063 | if (newwidth != FRAME_WIDTH (frame)) |
4588ec20 | 2064 | { |
502b9b64 | 2065 | set_window_width (FRAME_ROOT_WINDOW (frame), newwidth, 0); |
b6a65ac2 | 2066 | if (FRAME_HAS_MINIBUF_P (frame)) |
502b9b64 | 2067 | set_window_width (FRAME_MINIBUF_WINDOW (frame), newwidth, 0); |
4588ec20 | 2068 | |
b6a65ac2 | 2069 | if (FRAME_TERMCAP_P (frame) && !pretend) |
502b9b64 | 2070 | FrameCols = newwidth; |
4588ec20 | 2071 | #if 0 |
502b9b64 | 2072 | if (frame->output_method == output_termcap) |
4588ec20 | 2073 | { |
502b9b64 | 2074 | frame_width = newwidth; |
4588ec20 | 2075 | if (!pretend) |
502b9b64 | 2076 | FrameCols = newwidth; |
4588ec20 JB |
2077 | } |
2078 | #endif | |
2079 | } | |
2080 | ||
b6a65ac2 JB |
2081 | FRAME_HEIGHT (frame) = newheight; |
2082 | FRAME_WIDTH (frame) = newwidth; | |
986e61b8 RS |
2083 | |
2084 | if (FRAME_CURSOR_X (frame) >= FRAME_WIDTH (frame)) | |
2085 | FRAME_CURSOR_X (frame) = FRAME_WIDTH (frame) - 1; | |
2086 | if (FRAME_CURSOR_Y (frame) >= FRAME_HEIGHT (frame)) | |
2087 | FRAME_CURSOR_Y (frame) = FRAME_HEIGHT (frame) - 1; | |
2088 | ||
502b9b64 JB |
2089 | remake_frame_glyphs (frame); |
2090 | calculate_costs (frame); | |
4588ec20 JB |
2091 | } |
2092 | \f | |
2093 | DEFUN ("send-string-to-terminal", Fsend_string_to_terminal, | |
2094 | Ssend_string_to_terminal, 1, 1, 0, | |
2095 | "Send STRING to the terminal without alteration.\n\ | |
2096 | Control characters in STRING will have terminal-dependent effects.") | |
2097 | (str) | |
2098 | Lisp_Object str; | |
2099 | { | |
2100 | CHECK_STRING (str, 0); | |
2101 | fwrite (XSTRING (str)->data, 1, XSTRING (str)->size, stdout); | |
2102 | fflush (stdout); | |
2103 | if (termscript) | |
2104 | { | |
2105 | fwrite (XSTRING (str)->data, 1, XSTRING (str)->size, termscript); | |
2106 | fflush (termscript); | |
2107 | } | |
2108 | return Qnil; | |
2109 | } | |
2110 | ||
2111 | DEFUN ("ding", Fding, Sding, 0, 1, 0, | |
2112 | "Beep, or flash the screen.\n\ | |
2113 | Also, unless an argument is given,\n\ | |
2114 | terminate any keyboard macro currently executing.") | |
2115 | (arg) | |
2116 | Lisp_Object arg; | |
2117 | { | |
efb859b4 | 2118 | if (!NILP (arg)) |
4588ec20 | 2119 | { |
7fa788da RS |
2120 | if (noninteractive) |
2121 | putchar (07); | |
2122 | else | |
2123 | ring_bell (); | |
4588ec20 JB |
2124 | fflush (stdout); |
2125 | } | |
2126 | else | |
2127 | bitch_at_user (); | |
2128 | ||
2129 | return Qnil; | |
2130 | } | |
2131 | ||
2132 | bitch_at_user () | |
2133 | { | |
2134 | if (noninteractive) | |
2135 | putchar (07); | |
2136 | else if (!INTERACTIVE) /* Stop executing a keyboard macro. */ | |
2137 | error ("Keyboard macro terminated by a command ringing the bell"); | |
2138 | else | |
2139 | ring_bell (); | |
2140 | fflush (stdout); | |
2141 | } | |
2142 | ||
2143 | DEFUN ("sleep-for", Fsleep_for, Ssleep_for, 1, 2, 0, | |
767229f8 | 2144 | "Pause, without updating display, for SECONDS seconds.\n\ |
b07646f5 JB |
2145 | SECONDS may be a floating-point value, meaning that you can wait for a\n\ |
2146 | fraction of a second. Optional second arg MILLISECONDS specifies an\n\ | |
2147 | additional wait period, in milliseconds; this may be useful if your\n\ | |
2148 | Emacs was built without floating point support.\n\ | |
2149 | \(Not all operating systems support waiting for a fraction of a second.)") | |
767229f8 JB |
2150 | (seconds, milliseconds) |
2151 | Lisp_Object seconds, milliseconds; | |
4588ec20 | 2152 | { |
767229f8 | 2153 | int sec, usec; |
4588ec20 | 2154 | |
767229f8 JB |
2155 | if (NILP (milliseconds)) |
2156 | XSET (milliseconds, Lisp_Int, 0); | |
2157 | else | |
2158 | CHECK_NUMBER (milliseconds, 1); | |
b07646f5 JB |
2159 | usec = XINT (milliseconds) * 1000; |
2160 | ||
2161 | #ifdef LISP_FLOAT_TYPE | |
2162 | { | |
2163 | double duration = extract_float (seconds); | |
2164 | sec = (int) duration; | |
2165 | usec += (duration - sec) * 1000000; | |
2166 | } | |
2167 | #else | |
2168 | CHECK_NUMBER (seconds, 0); | |
2169 | sec = XINT (seconds); | |
2170 | #endif | |
4588ec20 | 2171 | |
a41f8bed | 2172 | #ifndef EMACS_HAS_USECS |
767229f8 JB |
2173 | if (sec == 0 && usec != 0) |
2174 | error ("millisecond `sleep-for' not supported on %s", SYSTEM_TYPE); | |
4588ec20 | 2175 | #endif |
767229f8 JB |
2176 | |
2177 | /* Assure that 0 <= usec < 1000000. */ | |
2178 | if (usec < 0) | |
2179 | { | |
2180 | /* We can't rely on the rounding being correct if user is negative. */ | |
2181 | if (-1000000 < usec) | |
2182 | sec--, usec += 1000000; | |
2183 | else | |
2184 | sec -= -usec / 1000000, usec = 1000000 - (-usec % 1000000); | |
4588ec20 | 2185 | } |
767229f8 JB |
2186 | else |
2187 | sec += usec / 1000000, usec %= 1000000; | |
2188 | ||
5c48f0da | 2189 | if (sec <= 0) |
767229f8 | 2190 | return Qnil; |
4588ec20 | 2191 | |
f76475ad JB |
2192 | { |
2193 | Lisp_Object zero; | |
2194 | ||
2195 | XFASTINT (zero) = 0; | |
2196 | wait_reading_process_input (sec, usec, zero, 0); | |
2197 | } | |
d1af74e9 | 2198 | |
767229f8 JB |
2199 | /* We should always have wait_reading_process_input; we have a dummy |
2200 | implementation for systems which don't support subprocesses. */ | |
2201 | #if 0 | |
2202 | /* No wait_reading_process_input */ | |
4588ec20 JB |
2203 | immediate_quit = 1; |
2204 | QUIT; | |
2205 | ||
2206 | #ifdef VMS | |
2207 | sys_sleep (sec); | |
2208 | #else /* not VMS */ | |
2209 | /* The reason this is done this way | |
2210 | (rather than defined (H_S) && defined (H_T)) | |
2211 | is because the VMS preprocessor doesn't grok `defined' */ | |
2212 | #ifdef HAVE_SELECT | |
a41f8bed JB |
2213 | EMACS_GET_TIME (end_time); |
2214 | EMACS_SET_SECS_USECS (timeout, sec, usec); | |
d1af74e9 | 2215 | EMACS_ADD_TIME (end_time, end_time, timeout); |
a41f8bed | 2216 | |
4588ec20 JB |
2217 | while (1) |
2218 | { | |
a41f8bed JB |
2219 | EMACS_GET_TIME (timeout); |
2220 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
2221 | if (EMACS_TIME_NEG_P (timeout) | |
2222 | || !select (1, 0, 0, 0, &timeout)) | |
4588ec20 JB |
2223 | break; |
2224 | } | |
4588ec20 JB |
2225 | #else /* not HAVE_SELECT */ |
2226 | sleep (sec); | |
2227 | #endif /* HAVE_SELECT */ | |
2228 | #endif /* not VMS */ | |
2229 | ||
2230 | immediate_quit = 0; | |
2231 | #endif /* no subprocesses */ | |
2232 | ||
2233 | return Qnil; | |
2234 | } | |
2235 | ||
f76475ad JB |
2236 | /* This is just like wait_reading_process_input, except that |
2237 | it does the redisplay. | |
2238 | ||
ea0d86af RS |
2239 | It's also much like Fsit_for, except that it can be used for |
2240 | waiting for input as well. One differnce is that sit_for | |
2241 | does not call prepare_menu_bars; Fsit_for does call that. */ | |
4588ec20 | 2242 | |
f76475ad JB |
2243 | Lisp_Object |
2244 | sit_for (sec, usec, reading, display) | |
2245 | int sec, usec, reading, display; | |
2246 | { | |
2247 | Lisp_Object read_kbd; | |
4588ec20 JB |
2248 | |
2249 | if (detect_input_pending ()) | |
2250 | return Qnil; | |
4588ec20 | 2251 | |
f76475ad JB |
2252 | if (display) |
2253 | redisplay_preserve_echo_area (); | |
4588ec20 | 2254 | |
dfdb645c JB |
2255 | if (sec == 0 && usec == 0) |
2256 | return Qt; | |
2257 | ||
4588ec20 | 2258 | #ifdef SIGIO |
8fc798e9 | 2259 | gobble_input (0); |
f76475ad JB |
2260 | #endif |
2261 | ||
2262 | XSET (read_kbd, Lisp_Int, reading ? -1 : 1); | |
2263 | wait_reading_process_input (sec, usec, read_kbd, display); | |
2264 | ||
d1af74e9 | 2265 | |
500ab754 JB |
2266 | /* wait_reading_process_input should always be available now; it is |
2267 | simulated in a simple way on systems that don't support | |
2268 | subprocesses. */ | |
2269 | #if 0 | |
2270 | /* No wait_reading_process_input available. */ | |
4588ec20 JB |
2271 | immediate_quit = 1; |
2272 | QUIT; | |
2273 | ||
2274 | waitchannels = 1; | |
2275 | #ifdef VMS | |
f76475ad | 2276 | input_wait_timeout (XINT (arg)); |
4588ec20 | 2277 | #else /* not VMS */ |
d1af74e9 JB |
2278 | #ifndef HAVE_TIMEVAL |
2279 | timeout_sec = sec; | |
2280 | select (1, &waitchannels, 0, 0, &timeout_sec); | |
2281 | #else /* HAVE_TIMEVAL */ | |
2282 | timeout.tv_sec = sec; | |
2283 | timeout.tv_usec = usec; | |
4588ec20 | 2284 | select (1, &waitchannels, 0, 0, &timeout); |
d1af74e9 | 2285 | #endif /* HAVE_TIMEVAL */ |
4588ec20 JB |
2286 | #endif /* not VMS */ |
2287 | ||
2288 | immediate_quit = 0; | |
d1af74e9 | 2289 | #endif |
4588ec20 JB |
2290 | |
2291 | return detect_input_pending () ? Qnil : Qt; | |
2292 | } | |
2293 | ||
f76475ad | 2294 | DEFUN ("sit-for", Fsit_for, Ssit_for, 1, 3, 0, |
767229f8 | 2295 | "Perform redisplay, then wait for SECONDS seconds or until input is available.\n\ |
b07646f5 JB |
2296 | SECONDS may be a floating-point value, meaning that you can wait for a\n\ |
2297 | fraction of a second. Optional second arg MILLISECONDS specifies an\n\ | |
2298 | additional wait period, in milliseconds; this may be useful if your\n\ | |
2299 | Emacs was built without floating point support.\n\ | |
2300 | \(Not all operating systems support waiting for a fraction of a second.)\n\ | |
f76475ad JB |
2301 | Optional third arg non-nil means don't redisplay, just wait for input.\n\ |
2302 | Redisplay is preempted as always if input arrives, and does not happen\n\ | |
2303 | if input is available before it starts.\n\ | |
2304 | Value is t if waited the full time with no input arriving.") | |
767229f8 JB |
2305 | (seconds, milliseconds, nodisp) |
2306 | Lisp_Object seconds, milliseconds, nodisp; | |
f76475ad | 2307 | { |
767229f8 | 2308 | int sec, usec; |
f76475ad | 2309 | |
767229f8 JB |
2310 | if (NILP (milliseconds)) |
2311 | XSET (milliseconds, Lisp_Int, 0); | |
2312 | else | |
2313 | CHECK_NUMBER (milliseconds, 1); | |
b07646f5 JB |
2314 | usec = XINT (milliseconds) * 1000; |
2315 | ||
2316 | #ifdef LISP_FLOAT_TYPE | |
2317 | { | |
2318 | double duration = extract_float (seconds); | |
2319 | sec = (int) duration; | |
2320 | usec += (duration - sec) * 1000000; | |
2321 | } | |
2322 | #else | |
2323 | CHECK_NUMBER (seconds, 0); | |
2324 | sec = XINT (seconds); | |
2325 | #endif | |
f76475ad | 2326 | |
f76475ad | 2327 | #ifndef EMACS_HAS_USECS |
767229f8 JB |
2328 | if (usec != 0 && sec == 0) |
2329 | error ("millisecond `sit-for' not supported on %s", SYSTEM_TYPE); | |
f76475ad | 2330 | #endif |
f76475ad | 2331 | |
ea0d86af RS |
2332 | if (NILP (nodisp)) |
2333 | prepare_menu_bars (); | |
f76475ad JB |
2334 | return sit_for (sec, usec, 0, NILP (nodisp)); |
2335 | } | |
4588ec20 JB |
2336 | \f |
2337 | char *terminal_type; | |
2338 | ||
2339 | /* Initialization done when Emacs fork is started, before doing stty. */ | |
2340 | /* Determine terminal type and set terminal_driver */ | |
2341 | /* Then invoke its decoding routine to set up variables | |
2342 | in the terminal package */ | |
2343 | ||
2344 | init_display () | |
2345 | { | |
2346 | #ifdef HAVE_X_WINDOWS | |
2347 | extern int display_arg; | |
2348 | #endif | |
2349 | ||
2350 | meta_key = 0; | |
2351 | inverse_video = 0; | |
2352 | cursor_in_echo_area = 0; | |
2353 | terminal_type = (char *) 0; | |
2354 | ||
1315c181 JB |
2355 | /* Now is the time to initialize this; it's used by init_sys_modes |
2356 | during startup. */ | |
2357 | Vwindow_system = Qnil; | |
4588ec20 | 2358 | |
1315c181 JB |
2359 | /* If the user wants to use a window system, we shouldn't bother |
2360 | initializing the terminal. This is especially important when the | |
2361 | terminal is so dumb that emacs gives up before and doesn't bother | |
2362 | using the window system. | |
4588ec20 | 2363 | |
1315c181 JB |
2364 | If the DISPLAY environment variable is set, try to use X, and die |
2365 | with an error message if that doesn't work. */ | |
4588ec20 JB |
2366 | |
2367 | #ifdef HAVE_X_WINDOWS | |
d460af17 JB |
2368 | if (! display_arg) |
2369 | { | |
2370 | #ifdef VMS | |
5de9f849 | 2371 | display_arg = (getenv ("DECW$DISPLAY") != 0); |
d460af17 | 2372 | #else |
5de9f849 | 2373 | display_arg = (getenv ("DISPLAY") != 0); |
d460af17 | 2374 | #endif |
f040093a | 2375 | } |
d460af17 JB |
2376 | |
2377 | if (!inhibit_window_system && display_arg) | |
4588ec20 JB |
2378 | { |
2379 | Vwindow_system = intern ("x"); | |
2380 | #ifdef HAVE_X11 | |
2381 | Vwindow_system_version = make_number (11); | |
2382 | #else | |
2383 | Vwindow_system_version = make_number (10); | |
2384 | #endif | |
2385 | return; | |
2386 | } | |
2387 | #endif /* HAVE_X_WINDOWS */ | |
2388 | ||
2389 | /* If no window system has been specified, try to use the terminal. */ | |
2390 | if (! isatty (0)) | |
2391 | { | |
2392 | fprintf (stderr, "emacs: standard input is not a tty\n"); | |
2393 | exit (1); | |
2394 | } | |
2395 | ||
2396 | /* Look at the TERM variable */ | |
2397 | terminal_type = (char *) getenv ("TERM"); | |
2398 | if (!terminal_type) | |
2399 | { | |
2400 | #ifdef VMS | |
2401 | fprintf (stderr, "Please specify your terminal type.\n\ | |
2402 | For types defined in VMS, use set term /device=TYPE.\n\ | |
2403 | For types not defined in VMS, use define emacs_term \"TYPE\".\n\ | |
2404 | \(The quotation marks are necessary since terminal types are lower case.)\n"); | |
2405 | #else | |
2406 | fprintf (stderr, "Please set the environment variable TERM; see tset(1).\n"); | |
2407 | #endif | |
2408 | exit (1); | |
2409 | } | |
2410 | ||
2411 | #ifdef VMS | |
2412 | /* VMS DCL tends to upcase things, so downcase term type. | |
2413 | Hardly any uppercase letters in terminal types; should be none. */ | |
2414 | { | |
2415 | char *new = (char *) xmalloc (strlen (terminal_type) + 1); | |
2416 | char *p; | |
2417 | ||
2418 | strcpy (new, terminal_type); | |
2419 | ||
2420 | for (p = new; *p; p++) | |
2421 | if (isupper (*p)) | |
2422 | *p = tolower (*p); | |
2423 | ||
2424 | terminal_type = new; | |
2425 | } | |
2426 | #endif | |
2427 | ||
2428 | term_init (terminal_type); | |
2429 | ||
502b9b64 JB |
2430 | remake_frame_glyphs (selected_frame); |
2431 | calculate_costs (selected_frame); | |
4588ec20 JB |
2432 | |
2433 | /* X and Y coordinates of the cursor between updates. */ | |
502b9b64 JB |
2434 | FRAME_CURSOR_X (selected_frame) = 0; |
2435 | FRAME_CURSOR_Y (selected_frame) = 0; | |
4588ec20 JB |
2436 | |
2437 | #ifdef SIGWINCH | |
2438 | #ifndef CANNOT_DUMP | |
2439 | if (initialized) | |
2440 | #endif /* CANNOT_DUMP */ | |
2441 | signal (SIGWINCH, window_change_signal); | |
2442 | #endif /* SIGWINCH */ | |
2443 | } | |
2444 | \f | |
2445 | syms_of_display () | |
2446 | { | |
502b9b64 JB |
2447 | #ifdef MULTI_FRAME |
2448 | defsubr (&Sredraw_frame); | |
4588ec20 JB |
2449 | #endif |
2450 | defsubr (&Sredraw_display); | |
078b3696 | 2451 | defsubr (&Sframe_or_buffer_changed_p); |
4588ec20 JB |
2452 | defsubr (&Sopen_termscript); |
2453 | defsubr (&Sding); | |
2454 | defsubr (&Ssit_for); | |
2455 | defsubr (&Ssleep_for); | |
2456 | defsubr (&Ssend_string_to_terminal); | |
2457 | ||
078b3696 KH |
2458 | frame_and_buffer_state = Fmake_vector (make_number (1), Qlambda); |
2459 | staticpro (&frame_and_buffer_state); | |
2460 | ||
4588ec20 JB |
2461 | DEFVAR_INT ("baud-rate", &baud_rate, |
2462 | "The output baud rate of the terminal.\n\ | |
2463 | On most systems, changing this value will affect the amount of padding\n\ | |
2464 | and the other strategic decisions made during redisplay."); | |
2465 | DEFVAR_BOOL ("inverse-video", &inverse_video, | |
502b9b64 | 2466 | "*Non-nil means invert the entire frame display.\n\ |
4588ec20 JB |
2467 | This means everything is in inverse video which otherwise would not be."); |
2468 | DEFVAR_BOOL ("visible-bell", &visible_bell, | |
502b9b64 | 2469 | "*Non-nil means try to flash the frame to represent a bell."); |
4588ec20 | 2470 | DEFVAR_BOOL ("no-redraw-on-reenter", &no_redraw_on_reenter, |
502b9b64 | 2471 | "*Non-nil means no need to redraw entire frame after suspending.\n\ |
4588ec20 | 2472 | A non-nil value is useful if the terminal can automatically preserve\n\ |
502b9b64 | 2473 | Emacs's frame display when you reenter Emacs.\n\ |
4588ec20 JB |
2474 | It is up to you to set this variable if your terminal can do that."); |
2475 | DEFVAR_LISP ("window-system", &Vwindow_system, | |
2476 | "A symbol naming the window-system under which Emacs is running\n\ | |
2477 | \(such as `x'), or nil if emacs is running on an ordinary terminal."); | |
2478 | DEFVAR_LISP ("window-system-version", &Vwindow_system_version, | |
2479 | "The version number of the window system in use.\n\ | |
2480 | For X windows, this is 10 or 11."); | |
2481 | DEFVAR_BOOL ("cursor-in-echo-area", &cursor_in_echo_area, | |
2482 | "Non-nil means put cursor in minibuffer, at end of any message there."); | |
2483 | DEFVAR_LISP ("glyph-table", &Vglyph_table, | |
502b9b64 | 2484 | "Table defining how to output a glyph code to the frame.\n\ |
4588ec20 JB |
2485 | If not nil, this is a vector indexed by glyph code to define the glyph.\n\ |
2486 | Each element can be:\n\ | |
2487 | integer: a glyph code which this glyph is an alias for.\n\ | |
2488 | string: output this glyph using that string (not impl. in X windows).\n\ | |
2489 | nil: this glyph mod 256 is char code to output,\n\ | |
6666f05a | 2490 | and this glyph / 256 is face code for X windows (see `face-id')."); |
4588ec20 JB |
2491 | Vglyph_table = Qnil; |
2492 | ||
2493 | DEFVAR_LISP ("standard-display-table", &Vstandard_display_table, | |
2494 | "Display table to use for buffers that specify none.\n\ | |
2495 | See `buffer-display-table' for more information."); | |
2496 | Vstandard_display_table = Qnil; | |
2497 | ||
2498 | /* Initialize `window-system', unless init_display already decided it. */ | |
2499 | #ifdef CANNOT_DUMP | |
2500 | if (noninteractive) | |
2501 | #endif | |
2502 | { | |
2503 | Vwindow_system = Qnil; | |
2504 | Vwindow_system_version = Qnil; | |
2505 | } | |
2506 | } |