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 JB |
42 | #include "systime.h" |
43 | ||
4588ec20 JB |
44 | #ifdef HAVE_X_WINDOWS |
45 | #include "xterm.h" | |
46 | #endif /* HAVE_X_WINDOWS */ | |
47 | ||
48 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
49 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
50 | ||
51 | #ifndef PENDING_OUTPUT_COUNT | |
52 | /* Get number of chars of output now in the buffer of a stdio stream. | |
53 | This ought to be built in in stdio, but it isn't. | |
54 | Some s- files override this because their stdio internals differ. */ | |
e3271ae5 RM |
55 | #ifdef __GNU_LIBRARY__ |
56 | #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->__bufp - (FILE)->__buffer) | |
57 | #else | |
4588ec20 JB |
58 | #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_ptr - (FILE)->_base) |
59 | #endif | |
e3271ae5 | 60 | #endif |
4588ec20 | 61 | |
a41f8bed | 62 | /* Nonzero upon entry to redisplay means do not assume anything about |
502b9b64 | 63 | current contents of actual terminal frame; clear and redraw it. */ |
4588ec20 | 64 | |
502b9b64 | 65 | int frame_garbaged; |
4588ec20 JB |
66 | |
67 | /* Nonzero means last display completed. Zero means it was preempted. */ | |
68 | ||
69 | int display_completed; | |
70 | ||
71 | /* Lisp variable visible-bell; enables use of screen-flash | |
72 | instead of audible bell. */ | |
73 | ||
74 | int visible_bell; | |
75 | ||
502b9b64 | 76 | /* Invert the color of the whole frame, at a low level. */ |
4588ec20 JB |
77 | |
78 | int inverse_video; | |
79 | ||
80 | /* Line speed of the terminal. */ | |
81 | ||
82 | int baud_rate; | |
83 | ||
84 | /* nil or a symbol naming the window system under which emacs is | |
85 | running ('x is the only current possibility). */ | |
86 | ||
87 | Lisp_Object Vwindow_system; | |
88 | ||
89 | /* Version number of X windows: 10, 11 or nil. */ | |
90 | Lisp_Object Vwindow_system_version; | |
91 | ||
92 | /* Vector of glyph definitions. Indexed by glyph number, | |
93 | the contents are a string which is how to output the glyph. | |
94 | ||
95 | If Vglyph_table is nil, a glyph is output by using its low 8 bits | |
96 | as a character code. */ | |
97 | ||
98 | Lisp_Object Vglyph_table; | |
99 | ||
100 | /* Display table to use for vectors that don't specify their own. */ | |
101 | ||
102 | Lisp_Object Vstandard_display_table; | |
103 | ||
104 | /* Nonzero means reading single-character input with prompt | |
1113d9db JB |
105 | so put cursor on minibuffer after the prompt. |
106 | positive means at end of text in echo area; | |
107 | negative means at beginning of line. */ | |
4588ec20 JB |
108 | int cursor_in_echo_area; |
109 | \f | |
502b9b64 JB |
110 | /* The currently selected frame. |
111 | In a single-frame version, this variable always remains 0. */ | |
4588ec20 | 112 | |
502b9b64 | 113 | FRAME_PTR selected_frame; |
4588ec20 | 114 | |
502b9b64 JB |
115 | /* A frame which is not just a minibuffer, or 0 if there are no such |
116 | frames. This is usually the most recent such frame that was | |
117 | selected. In a single-frame version, this variable always remains 0. */ | |
118 | FRAME_PTR last_nonminibuf_frame; | |
e5d77022 | 119 | |
502b9b64 | 120 | /* In a single-frame version, the information that would otherwise |
190721ac JB |
121 | exist inside frame objects lives in the following structure instead. |
122 | ||
123 | NOTE: the_only_frame is not checked for garbage collection; don't | |
eb8c3be9 | 124 | store collectible objects in any of its fields! |
190721ac JB |
125 | |
126 | You're not/The only frame in town/... */ | |
4588ec20 | 127 | |
502b9b64 JB |
128 | #ifndef MULTI_FRAME |
129 | struct frame the_only_frame; | |
e5d77022 | 130 | #endif |
4588ec20 JB |
131 | |
132 | /* This is a vector, made larger whenever it isn't large enough, | |
502b9b64 JB |
133 | which is used inside `update_frame' to hold the old contents |
134 | of the FRAME_PHYS_LINES of the frame being updated. */ | |
135 | struct frame_glyphs **ophys_lines; | |
4588ec20 JB |
136 | /* Length of vector currently allocated. */ |
137 | int ophys_lines_length; | |
138 | ||
139 | FILE *termscript; /* Stdio stream being used for copy of all output. */ | |
140 | ||
141 | struct cm Wcm; /* Structure for info on cursor positioning */ | |
142 | ||
143 | extern short ospeed; /* Output speed (from sg_ospeed) */ | |
144 | ||
4588ec20 | 145 | int delayed_size_change; /* 1 means SIGWINCH happened when not safe. */ |
4588ec20 | 146 | \f |
502b9b64 | 147 | #ifdef MULTI_FRAME |
4588ec20 | 148 | |
502b9b64 JB |
149 | DEFUN ("redraw-frame", Fredraw_frame, Sredraw_frame, 1, 1, 0, |
150 | "Clear frame FRAME and output again what is supposed to appear on it.") | |
151 | (frame) | |
152 | Lisp_Object frame; | |
4588ec20 | 153 | { |
502b9b64 | 154 | FRAME_PTR f; |
4588ec20 | 155 | |
502b9b64 JB |
156 | CHECK_LIVE_FRAME (frame, 0); |
157 | f = XFRAME (frame); | |
158 | update_begin (f); | |
4588ec20 | 159 | /* set_terminal_modes (); */ |
502b9b64 | 160 | clear_frame (); |
b6a65ac2 | 161 | clear_frame_records (f); |
502b9b64 | 162 | update_end (f); |
4588ec20 | 163 | fflush (stdout); |
4588ec20 JB |
164 | windows_or_buffers_changed++; |
165 | /* Mark all windows as INaccurate, | |
166 | so that every window will have its redisplay done. */ | |
502b9b64 JB |
167 | mark_window_display_accurate (FRAME_ROOT_WINDOW (f), 0); |
168 | f->garbaged = 0; | |
4588ec20 JB |
169 | return Qnil; |
170 | } | |
171 | ||
502b9b64 JB |
172 | redraw_frame (f) |
173 | FRAME_PTR f; | |
4588ec20 | 174 | { |
502b9b64 JB |
175 | Lisp_Object frame; |
176 | XSET (frame, Lisp_Frame, f); | |
177 | Fredraw_frame (frame); | |
4588ec20 JB |
178 | } |
179 | ||
35f56f96 | 180 | #else |
4588ec20 | 181 | |
d8039c5c | 182 | DEFUN ("redraw-frame", Fredraw_frame, Sredraw_frame, 1, 1, 0, |
35f56f96 JB |
183 | "Clear frame FRAME and output again what is supposed to appear on it.") |
184 | (frame) | |
185 | Lisp_Object frame; | |
4588ec20 JB |
186 | { |
187 | update_begin (0); | |
188 | set_terminal_modes (); | |
502b9b64 | 189 | clear_frame (); |
4588ec20 JB |
190 | update_end (0); |
191 | fflush (stdout); | |
502b9b64 | 192 | clear_frame_records (0); |
4588ec20 JB |
193 | windows_or_buffers_changed++; |
194 | /* Mark all windows as INaccurate, | |
195 | so that every window will have its redisplay done. */ | |
b5c685f4 | 196 | mark_window_display_accurate (FRAME_ROOT_WINDOW (0), 0); |
4588ec20 JB |
197 | return Qnil; |
198 | } | |
199 | ||
35f56f96 JB |
200 | #endif |
201 | ||
202 | DEFUN ("redraw-display", Fredraw_display, Sredraw_display, 0, 0, "", | |
203 | "Clear and redisplay all visible frames.") | |
204 | () | |
205 | { | |
206 | Lisp_Object tail, frame; | |
207 | ||
208 | FOR_EACH_FRAME (tail, frame) | |
9223a96a | 209 | if (FRAME_VISIBLE_P (XFRAME (frame))) |
35f56f96 JB |
210 | Fredraw_frame (frame); |
211 | ||
212 | return Qnil; | |
213 | } | |
214 | ||
9223a96a RS |
215 | /* This is used when frame_garbaged is set. |
216 | Redraw the individual frames marked as garbaged. */ | |
217 | ||
218 | void | |
219 | redraw_garbaged_frames () | |
220 | { | |
221 | Lisp_Object tail, frame; | |
222 | ||
223 | FOR_EACH_FRAME (tail, frame) | |
224 | if (FRAME_VISIBLE_P (XFRAME (frame)) | |
225 | && FRAME_GARBAGED_P (XFRAME (frame))) | |
226 | Fredraw_frame (frame); | |
227 | } | |
228 | ||
4588ec20 | 229 | \f |
502b9b64 JB |
230 | static struct frame_glyphs * |
231 | make_frame_glyphs (frame, empty) | |
232 | register FRAME_PTR frame; | |
4588ec20 JB |
233 | int empty; |
234 | { | |
235 | register int i; | |
502b9b64 JB |
236 | register width = FRAME_WIDTH (frame); |
237 | register height = FRAME_HEIGHT (frame); | |
60a8948a RS |
238 | register struct frame_glyphs *new |
239 | = (struct frame_glyphs *) xmalloc (sizeof (struct frame_glyphs)); | |
4588ec20 | 240 | |
502b9b64 | 241 | SET_GLYPHS_FRAME (new, frame); |
4588ec20 JB |
242 | new->height = height; |
243 | new->width = width; | |
244 | new->used = (int *) xmalloc (height * sizeof (int)); | |
245 | new->glyphs = (GLYPH **) xmalloc (height * sizeof (GLYPH *)); | |
60a8948a | 246 | new->charstarts = (int **) xmalloc (height * sizeof (int *)); |
4588ec20 JB |
247 | new->highlight = (char *) xmalloc (height * sizeof (char)); |
248 | new->enable = (char *) xmalloc (height * sizeof (char)); | |
249 | bzero (new->enable, height * sizeof (char)); | |
250 | new->bufp = (int *) xmalloc (height * sizeof (int)); | |
251 | ||
252 | #ifdef HAVE_X_WINDOWS | |
b6a65ac2 | 253 | if (FRAME_X_P (frame)) |
4588ec20 | 254 | { |
4588ec20 JB |
255 | new->top_left_x = (short *) xmalloc (height * sizeof (short)); |
256 | new->top_left_y = (short *) xmalloc (height * sizeof (short)); | |
257 | new->pix_width = (short *) xmalloc (height * sizeof (short)); | |
258 | new->pix_height = (short *) xmalloc (height * sizeof (short)); | |
448fd7c0 | 259 | new->max_ascent = (short *) xmalloc (height * sizeof (short)); |
4588ec20 JB |
260 | } |
261 | #endif | |
262 | ||
263 | if (empty) | |
264 | { | |
265 | /* Make the buffer used by decode_mode_spec. This buffer is also | |
502b9b64 | 266 | used as temporary storage when updating the frame. See scroll.c. */ |
4588ec20 JB |
267 | unsigned int total_glyphs = (width + 2) * sizeof (GLYPH); |
268 | ||
269 | new->total_contents = (GLYPH *) xmalloc (total_glyphs); | |
270 | bzero (new->total_contents, total_glyphs); | |
271 | } | |
272 | else | |
273 | { | |
274 | unsigned int total_glyphs = height * (width + 2) * sizeof (GLYPH); | |
275 | ||
276 | new->total_contents = (GLYPH *) xmalloc (total_glyphs); | |
277 | bzero (new->total_contents, total_glyphs); | |
278 | for (i = 0; i < height; i++) | |
279 | new->glyphs[i] = new->total_contents + i * (width + 2) + 1; | |
60a8948a RS |
280 | |
281 | if (!FRAME_TERMCAP_P (frame)) | |
282 | { | |
283 | unsigned int total_charstarts = height * (width + 2) * sizeof (int); | |
284 | ||
285 | new->total_charstarts = (int *) xmalloc (total_charstarts); | |
286 | bzero (new->total_charstarts, total_charstarts); | |
287 | for (i = 0; i < height; i++) | |
288 | new->charstarts[i] = new->total_charstarts + i * (width + 2) + 1; | |
289 | } | |
290 | else | |
291 | { | |
292 | /* Without a window system, we don't really need charstarts. | |
293 | So use a small amount of space to make enough data structure | |
294 | to prevent crashes in display_text_line. */ | |
295 | new->total_charstarts = (int *) xmalloc ((width + 2) * sizeof (int)); | |
296 | for (i = 0; i < height; i++) | |
297 | new->charstarts[i] = new->total_charstarts; | |
298 | } | |
4588ec20 JB |
299 | } |
300 | ||
301 | return new; | |
302 | } | |
303 | ||
304 | static void | |
502b9b64 JB |
305 | free_frame_glyphs (frame, glyphs) |
306 | FRAME_PTR frame; | |
307 | struct frame_glyphs *glyphs; | |
4588ec20 JB |
308 | { |
309 | if (glyphs->total_contents) | |
9ac0d9e0 | 310 | xfree (glyphs->total_contents); |
60a8948a RS |
311 | if (glyphs->total_charstarts) |
312 | xfree (glyphs->total_charstarts); | |
4588ec20 | 313 | |
9ac0d9e0 JB |
314 | xfree (glyphs->used); |
315 | xfree (glyphs->glyphs); | |
316 | xfree (glyphs->highlight); | |
317 | xfree (glyphs->enable); | |
318 | xfree (glyphs->bufp); | |
60a8948a RS |
319 | if (glyphs->charstarts) |
320 | xfree (glyphs->charstarts); | |
4588ec20 JB |
321 | |
322 | #ifdef HAVE_X_WINDOWS | |
b6a65ac2 | 323 | if (FRAME_X_P (frame)) |
4588ec20 | 324 | { |
9ac0d9e0 JB |
325 | xfree (glyphs->top_left_x); |
326 | xfree (glyphs->top_left_y); | |
327 | xfree (glyphs->pix_width); | |
328 | xfree (glyphs->pix_height); | |
329 | xfree (glyphs->max_ascent); | |
4588ec20 JB |
330 | } |
331 | #endif | |
332 | ||
9ac0d9e0 | 333 | xfree (glyphs); |
4588ec20 JB |
334 | } |
335 | ||
336 | static void | |
502b9b64 JB |
337 | remake_frame_glyphs (frame) |
338 | FRAME_PTR frame; | |
4588ec20 | 339 | { |
502b9b64 JB |
340 | if (FRAME_CURRENT_GLYPHS (frame)) |
341 | free_frame_glyphs (frame, FRAME_CURRENT_GLYPHS (frame)); | |
342 | if (FRAME_DESIRED_GLYPHS (frame)) | |
343 | free_frame_glyphs (frame, FRAME_DESIRED_GLYPHS (frame)); | |
344 | if (FRAME_TEMP_GLYPHS (frame)) | |
345 | free_frame_glyphs (frame, FRAME_TEMP_GLYPHS (frame)); | |
346 | ||
347 | if (FRAME_MESSAGE_BUF (frame)) | |
832a0726 JB |
348 | { |
349 | /* Reallocate the frame's message buffer; remember that | |
350 | echo_area_glyphs may be pointing here. */ | |
351 | char *old_message_buf = FRAME_MESSAGE_BUF (frame); | |
352 | ||
353 | FRAME_MESSAGE_BUF (frame) | |
354 | = (char *) xrealloc (FRAME_MESSAGE_BUF (frame), | |
355 | FRAME_WIDTH (frame) + 1); | |
356 | ||
357 | if (echo_area_glyphs == old_message_buf) | |
358 | echo_area_glyphs = FRAME_MESSAGE_BUF (frame); | |
359 | if (previous_echo_glyphs == old_message_buf) | |
360 | previous_echo_glyphs = FRAME_MESSAGE_BUF (frame); | |
361 | } | |
4588ec20 | 362 | else |
502b9b64 JB |
363 | FRAME_MESSAGE_BUF (frame) |
364 | = (char *) xmalloc (FRAME_WIDTH (frame) + 1); | |
4588ec20 | 365 | |
502b9b64 JB |
366 | FRAME_CURRENT_GLYPHS (frame) = make_frame_glyphs (frame, 0); |
367 | FRAME_DESIRED_GLYPHS (frame) = make_frame_glyphs (frame, 0); | |
368 | FRAME_TEMP_GLYPHS (frame) = make_frame_glyphs (frame, 1); | |
369 | SET_FRAME_GARBAGED (frame); | |
4588ec20 JB |
370 | } |
371 | \f | |
502b9b64 | 372 | /* Return the hash code of contents of line VPOS in frame-matrix M. */ |
4588ec20 JB |
373 | |
374 | static int | |
375 | line_hash_code (m, vpos) | |
502b9b64 | 376 | register struct frame_glyphs *m; |
4588ec20 JB |
377 | int vpos; |
378 | { | |
379 | register GLYPH *body, *end; | |
380 | register int h = 0; | |
381 | ||
382 | if (!m->enable[vpos]) | |
383 | return 0; | |
384 | ||
94aa5d2d | 385 | /* Give all highlighted lines the same hash code |
4588ec20 JB |
386 | so as to encourage scrolling to leave them in place. */ |
387 | if (m->highlight[vpos]) | |
388 | return -1; | |
389 | ||
390 | body = m->glyphs[vpos]; | |
391 | ||
392 | if (must_write_spaces) | |
393 | while (1) | |
394 | { | |
395 | GLYPH g = *body++; | |
396 | ||
397 | if (g == 0) | |
398 | break; | |
399 | h = (((h << 4) + (h >> 24)) & 0x0fffffff) + g - SPACEGLYPH; | |
400 | } | |
401 | else | |
402 | while (1) | |
403 | { | |
404 | GLYPH g = *body++; | |
405 | ||
406 | if (g == 0) | |
407 | break; | |
408 | h = (((h << 4) + (h >> 24)) & 0x0fffffff) + g; | |
409 | } | |
410 | ||
411 | if (h) | |
412 | return h; | |
413 | return 1; | |
414 | } | |
415 | ||
416 | /* Return number of characters in line in M at vpos VPOS, | |
417 | except don't count leading and trailing spaces | |
418 | unless the terminal requires those to be explicitly output. */ | |
419 | ||
420 | static unsigned int | |
421 | line_draw_cost (m, vpos) | |
502b9b64 | 422 | struct frame_glyphs *m; |
4588ec20 JB |
423 | int vpos; |
424 | { | |
425 | register GLYPH *beg = m->glyphs[vpos]; | |
426 | register GLYPH *end = m->glyphs[vpos] + m->used[vpos]; | |
427 | register int i; | |
428 | register int tlen = GLYPH_TABLE_LENGTH; | |
429 | register Lisp_Object *tbase = GLYPH_TABLE_BASE; | |
430 | ||
431 | /* Ignore trailing and leading spaces if we can. */ | |
432 | if (!must_write_spaces) | |
433 | { | |
434 | while ((end != beg) && (*end == SPACEGLYPH)) | |
435 | --end; | |
436 | if (end == beg) | |
437 | return (0); /* All blank line. */ | |
438 | ||
439 | while (*beg == SPACEGLYPH) | |
440 | ++beg; | |
441 | } | |
442 | ||
443 | /* If we don't have a glyph-table, each glyph is one character, | |
444 | so return the number of glyphs. */ | |
445 | if (tbase == 0) | |
446 | return end - beg; | |
447 | ||
448 | /* Otherwise, scan the glyphs and accumulate their total size in I. */ | |
449 | i = 0; | |
450 | while ((beg <= end) && *beg) | |
451 | { | |
452 | register GLYPH g = *beg++; | |
453 | ||
454 | if (GLYPH_SIMPLE_P (tbase, tlen, g)) | |
455 | i += 1; | |
456 | else | |
457 | i += GLYPH_LENGTH (tbase, g); | |
458 | } | |
459 | return i; | |
460 | } | |
461 | \f | |
462 | /* The functions on this page are the interface from xdisp.c to redisplay. | |
463 | ||
464 | The only other interface into redisplay is through setting | |
502b9b64 JB |
465 | FRAME_CURSOR_X (frame) and FRAME_CURSOR_Y (frame) |
466 | and SET_FRAME_GARBAGED (frame). */ | |
4588ec20 JB |
467 | |
468 | /* cancel_line eliminates any request to display a line at position `vpos' */ | |
469 | ||
502b9b64 | 470 | cancel_line (vpos, frame) |
4588ec20 | 471 | int vpos; |
502b9b64 | 472 | register FRAME_PTR frame; |
4588ec20 | 473 | { |
502b9b64 | 474 | FRAME_DESIRED_GLYPHS (frame)->enable[vpos] = 0; |
4588ec20 JB |
475 | } |
476 | ||
502b9b64 JB |
477 | clear_frame_records (frame) |
478 | register FRAME_PTR frame; | |
4588ec20 | 479 | { |
502b9b64 | 480 | bzero (FRAME_CURRENT_GLYPHS (frame)->enable, FRAME_HEIGHT (frame)); |
4588ec20 JB |
481 | } |
482 | ||
483 | /* Prepare to display on line VPOS starting at HPOS within it. */ | |
484 | ||
485 | void | |
502b9b64 JB |
486 | get_display_line (frame, vpos, hpos) |
487 | register FRAME_PTR frame; | |
4588ec20 JB |
488 | int vpos; |
489 | register int hpos; | |
490 | { | |
502b9b64 JB |
491 | register struct frame_glyphs *glyphs; |
492 | register struct frame_glyphs *desired_glyphs = FRAME_DESIRED_GLYPHS (frame); | |
4588ec20 JB |
493 | register GLYPH *p; |
494 | ||
7c3c72ec | 495 | if (vpos < 0) |
4588ec20 JB |
496 | abort (); |
497 | ||
498 | if ((desired_glyphs->enable[vpos]) && desired_glyphs->used[vpos] > hpos) | |
499 | abort (); | |
500 | ||
501 | if (! desired_glyphs->enable[vpos]) | |
502 | { | |
503 | desired_glyphs->used[vpos] = 0; | |
504 | desired_glyphs->highlight[vpos] = 0; | |
505 | desired_glyphs->enable[vpos] = 1; | |
506 | } | |
507 | ||
508 | if (hpos > desired_glyphs->used[vpos]) | |
509 | { | |
510 | GLYPH *g = desired_glyphs->glyphs[vpos] + desired_glyphs->used[vpos]; | |
511 | GLYPH *end = desired_glyphs->glyphs[vpos] + hpos; | |
512 | ||
513 | desired_glyphs->used[vpos] = hpos; | |
514 | while (g != end) | |
515 | *g++ = SPACEGLYPH; | |
516 | } | |
517 | } | |
518 | ||
519 | /* Like bcopy except never gets confused by overlap. */ | |
520 | ||
521 | void | |
522 | safe_bcopy (from, to, size) | |
523 | char *from, *to; | |
524 | int size; | |
525 | { | |
b5c685f4 | 526 | if (size <= 0 || from == to) |
4588ec20 JB |
527 | return; |
528 | ||
b5c685f4 JB |
529 | /* If the source and destination don't overlap, then bcopy can |
530 | handle it. If they do overlap, but the destination is lower in | |
531 | memory than the source, we'll assume bcopy can handle that. */ | |
532 | if (to < from || from + size <= to) | |
533 | bcopy (from, to, size); | |
534 | ||
535 | /* Otherwise, we'll copy from the end. */ | |
536 | else | |
4588ec20 | 537 | { |
b5c685f4 JB |
538 | register char *endf = from + size; |
539 | register char *endt = to + size; | |
4588ec20 JB |
540 | |
541 | /* If TO - FROM is large, then we should break the copy into | |
542 | nonoverlapping chunks of TO - FROM bytes each. However, if | |
543 | TO - FROM is small, then the bcopy function call overhead | |
544 | makes this not worth it. The crossover point could be about | |
b5c685f4 JB |
545 | anywhere. Since I don't think the obvious copy loop is too |
546 | bad, I'm trying to err in its favor. */ | |
4588ec20 JB |
547 | if (to - from < 64) |
548 | { | |
549 | do | |
550 | *--endt = *--endf; | |
551 | while (endf != from); | |
552 | } | |
553 | else | |
554 | { | |
b5c685f4 | 555 | for (;;) |
4588ec20 JB |
556 | { |
557 | endt -= (to - from); | |
558 | endf -= (to - from); | |
559 | ||
b5c685f4 JB |
560 | if (endt < to) |
561 | break; | |
562 | ||
4588ec20 JB |
563 | bcopy (endf, endt, to - from); |
564 | } | |
b5c685f4 JB |
565 | |
566 | /* If SIZE wasn't a multiple of TO - FROM, there will be a | |
4588ec20 JB |
567 | little left over. The amount left over is |
568 | (endt + (to - from)) - to, which is endt - from. */ | |
569 | bcopy (from, to, endt - from); | |
570 | } | |
571 | } | |
4588ec20 JB |
572 | } |
573 | ||
98038dc0 | 574 | /* Rotate a vector of SIZE bytes right, by DISTANCE bytes. |
4588ec20 JB |
575 | DISTANCE may be negative. */ |
576 | ||
577 | static void | |
578 | rotate_vector (vector, size, distance) | |
579 | char *vector; | |
580 | int size; | |
581 | int distance; | |
582 | { | |
583 | char *temp = (char *) alloca (size); | |
584 | ||
585 | if (distance < 0) | |
586 | distance += size; | |
587 | ||
588 | bcopy (vector, temp + distance, size - distance); | |
589 | bcopy (vector + size - distance, temp, distance); | |
590 | bcopy (temp, vector, size); | |
591 | } | |
592 | ||
593 | /* Scroll lines from vpos FROM up to but not including vpos END | |
594 | down by AMOUNT lines (AMOUNT may be negative). | |
595 | Returns nonzero if done, zero if terminal cannot scroll them. */ | |
596 | ||
597 | int | |
60a8948a | 598 | scroll_frame_lines (frame, from, end, amount, pos_adjust) |
502b9b64 | 599 | register FRAME_PTR frame; |
60a8948a | 600 | int from, end, amount, pos_adjust; |
4588ec20 JB |
601 | { |
602 | register int i; | |
502b9b64 JB |
603 | register struct frame_glyphs *current_frame |
604 | = FRAME_CURRENT_GLYPHS (frame); | |
4588ec20 JB |
605 | |
606 | if (!line_ins_del_ok) | |
607 | return 0; | |
608 | ||
609 | if (amount == 0) | |
610 | return 1; | |
611 | ||
612 | if (amount > 0) | |
613 | { | |
502b9b64 | 614 | update_begin (frame); |
4588ec20 JB |
615 | set_terminal_window (end + amount); |
616 | if (!scroll_region_ok) | |
617 | ins_del_lines (end, -amount); | |
618 | ins_del_lines (from, amount); | |
619 | set_terminal_window (0); | |
620 | ||
502b9b64 | 621 | rotate_vector (current_frame->glyphs + from, |
4588ec20 JB |
622 | sizeof (GLYPH *) * (end + amount - from), |
623 | amount * sizeof (GLYPH *)); | |
624 | ||
60a8948a RS |
625 | rotate_vector (current_frame->charstarts + from, |
626 | sizeof (GLYPH *) * (end + amount - from), | |
627 | amount * sizeof (GLYPH *)); | |
628 | ||
629 | /* Offset each char position in the charstarts lines we moved | |
630 | by pos_adjust. */ | |
631 | for (i = from + amount; i < end; i++) | |
632 | { | |
633 | int *line = current_frame->charstarts[from]; | |
634 | int col; | |
635 | for (col = 0; col < current_frame->used[from]; col++) | |
636 | line[col] += pos_adjust; | |
637 | } | |
638 | for (i = from; i <= from + amount; i++) | |
639 | { | |
640 | int *line = current_frame->charstarts[from]; | |
641 | int col; | |
642 | line[0] = -1; | |
643 | for (col = 0; col < current_frame->used[from]; col++) | |
644 | line[col] = 0; | |
645 | } | |
646 | ||
502b9b64 JB |
647 | safe_bcopy (current_frame->used + from, |
648 | current_frame->used + from + amount, | |
649 | (end - from) * sizeof current_frame->used[0]); | |
4588ec20 | 650 | |
502b9b64 JB |
651 | safe_bcopy (current_frame->highlight + from, |
652 | current_frame->highlight + from + amount, | |
653 | (end - from) * sizeof current_frame->highlight[0]); | |
4588ec20 | 654 | |
502b9b64 JB |
655 | safe_bcopy (current_frame->enable + from, |
656 | current_frame->enable + from + amount, | |
657 | (end - from) * sizeof current_frame->enable[0]); | |
4588ec20 JB |
658 | |
659 | /* Mark the lines made empty by scrolling as enabled, empty and | |
660 | normal video. */ | |
502b9b64 JB |
661 | bzero (current_frame->used + from, |
662 | amount * sizeof current_frame->used[0]); | |
663 | bzero (current_frame->highlight + from, | |
664 | amount * sizeof current_frame->highlight[0]); | |
4588ec20 JB |
665 | for (i = from; i < from + amount; i++) |
666 | { | |
502b9b64 | 667 | current_frame->glyphs[i][0] = '\0'; |
60a8948a | 668 | current_frame->charstarts[i][0] = -1; |
502b9b64 | 669 | current_frame->enable[i] = 1; |
4588ec20 JB |
670 | } |
671 | ||
502b9b64 JB |
672 | safe_bcopy (current_frame->bufp + from, |
673 | current_frame->bufp + from + amount, | |
674 | (end - from) * sizeof current_frame->bufp[0]); | |
4588ec20 JB |
675 | |
676 | #ifdef HAVE_X_WINDOWS | |
b6a65ac2 | 677 | if (FRAME_X_P (frame)) |
4588ec20 | 678 | { |
502b9b64 JB |
679 | safe_bcopy (current_frame->top_left_x + from, |
680 | current_frame->top_left_x + from + amount, | |
681 | (end - from) * sizeof current_frame->top_left_x[0]); | |
4588ec20 | 682 | |
502b9b64 JB |
683 | safe_bcopy (current_frame->top_left_y + from, |
684 | current_frame->top_left_y + from + amount, | |
685 | (end - from) * sizeof current_frame->top_left_y[0]); | |
4588ec20 | 686 | |
502b9b64 JB |
687 | safe_bcopy (current_frame->pix_width + from, |
688 | current_frame->pix_width + from + amount, | |
689 | (end - from) * sizeof current_frame->pix_width[0]); | |
4588ec20 | 690 | |
502b9b64 JB |
691 | safe_bcopy (current_frame->pix_height + from, |
692 | current_frame->pix_height + from + amount, | |
693 | (end - from) * sizeof current_frame->pix_height[0]); | |
448fd7c0 JA |
694 | |
695 | safe_bcopy (current_frame->max_ascent + from, | |
696 | current_frame->max_ascent + from + amount, | |
697 | (end - from) * sizeof current_frame->max_ascent[0]); | |
4588ec20 JB |
698 | } |
699 | #endif /* HAVE_X_WINDOWS */ | |
700 | ||
502b9b64 | 701 | update_end (frame); |
4588ec20 JB |
702 | } |
703 | if (amount < 0) | |
704 | { | |
502b9b64 | 705 | update_begin (frame); |
4588ec20 JB |
706 | set_terminal_window (end); |
707 | ins_del_lines (from + amount, amount); | |
708 | if (!scroll_region_ok) | |
709 | ins_del_lines (end + amount, -amount); | |
710 | set_terminal_window (0); | |
711 | ||
502b9b64 | 712 | rotate_vector (current_frame->glyphs + from + amount, |
4588ec20 JB |
713 | sizeof (GLYPH *) * (end - from - amount), |
714 | amount * sizeof (GLYPH *)); | |
715 | ||
60a8948a RS |
716 | rotate_vector (current_frame->charstarts + from + amount, |
717 | sizeof (GLYPH *) * (end - from - amount), | |
718 | amount * sizeof (GLYPH *)); | |
719 | ||
720 | /* Offset each char position in the charstarts lines we moved | |
721 | by pos_adjust. */ | |
722 | for (i = from + amount; i < end + amount; i++) | |
723 | { | |
724 | int *line = current_frame->charstarts[from]; | |
725 | int col; | |
726 | for (col = 0; col < current_frame->used[from]; col++) | |
727 | line[col] += pos_adjust; | |
728 | } | |
729 | for (i = end + amount; i <= end; i++) | |
730 | { | |
731 | int *line = current_frame->charstarts[from]; | |
732 | int col; | |
733 | line[0] = -1; | |
734 | for (col = 0; col < current_frame->used[from]; col++) | |
735 | line[col] = 0; | |
736 | } | |
737 | ||
502b9b64 JB |
738 | safe_bcopy (current_frame->used + from, |
739 | current_frame->used + from + amount, | |
740 | (end - from) * sizeof current_frame->used[0]); | |
4588ec20 | 741 | |
502b9b64 JB |
742 | safe_bcopy (current_frame->highlight + from, |
743 | current_frame->highlight + from + amount, | |
744 | (end - from) * sizeof current_frame->highlight[0]); | |
4588ec20 | 745 | |
502b9b64 JB |
746 | safe_bcopy (current_frame->enable + from, |
747 | current_frame->enable + from + amount, | |
748 | (end - from) * sizeof current_frame->enable[0]); | |
4588ec20 JB |
749 | |
750 | /* Mark the lines made empty by scrolling as enabled, empty and | |
751 | normal video. */ | |
502b9b64 JB |
752 | bzero (current_frame->used + end + amount, |
753 | - amount * sizeof current_frame->used[0]); | |
754 | bzero (current_frame->highlight + end + amount, | |
755 | - amount * sizeof current_frame->highlight[0]); | |
4588ec20 JB |
756 | for (i = end + amount; i < end; i++) |
757 | { | |
502b9b64 | 758 | current_frame->glyphs[i][0] = '\0'; |
60a8948a | 759 | current_frame->charstarts[i][0] = 0; |
502b9b64 | 760 | current_frame->enable[i] = 1; |
4588ec20 JB |
761 | } |
762 | ||
502b9b64 JB |
763 | safe_bcopy (current_frame->bufp + from, |
764 | current_frame->bufp + from + amount, | |
765 | (end - from) * sizeof current_frame->bufp[0]); | |
4588ec20 JB |
766 | |
767 | #ifdef HAVE_X_WINDOWS | |
b6a65ac2 | 768 | if (FRAME_X_P (frame)) |
4588ec20 | 769 | { |
502b9b64 JB |
770 | safe_bcopy (current_frame->top_left_x + from, |
771 | current_frame->top_left_x + from + amount, | |
772 | (end - from) * sizeof current_frame->top_left_x[0]); | |
4588ec20 | 773 | |
502b9b64 JB |
774 | safe_bcopy (current_frame->top_left_y + from, |
775 | current_frame->top_left_y + from + amount, | |
776 | (end - from) * sizeof current_frame->top_left_y[0]); | |
4588ec20 | 777 | |
502b9b64 JB |
778 | safe_bcopy (current_frame->pix_width + from, |
779 | current_frame->pix_width + from + amount, | |
780 | (end - from) * sizeof current_frame->pix_width[0]); | |
4588ec20 | 781 | |
502b9b64 JB |
782 | safe_bcopy (current_frame->pix_height + from, |
783 | current_frame->pix_height + from + amount, | |
784 | (end - from) * sizeof current_frame->pix_height[0]); | |
448fd7c0 JA |
785 | |
786 | safe_bcopy (current_frame->max_ascent + from, | |
787 | current_frame->max_ascent + from + amount, | |
788 | (end - from) * sizeof current_frame->max_ascent[0]); | |
4588ec20 JB |
789 | } |
790 | #endif /* HAVE_X_WINDOWS */ | |
791 | ||
502b9b64 | 792 | update_end (frame); |
4588ec20 JB |
793 | } |
794 | return 1; | |
795 | } | |
796 | \f | |
502b9b64 | 797 | /* After updating a window W that isn't the full frame wide, |
4588ec20 | 798 | copy all the columns that W does not occupy |
502b9b64 JB |
799 | into the FRAME_DESIRED_GLYPHS (frame) from the FRAME_PHYS_GLYPHS (frame) |
800 | so that update_frame will not change those columns. */ | |
4588ec20 JB |
801 | |
802 | preserve_other_columns (w) | |
803 | struct window *w; | |
804 | { | |
805 | register int vpos; | |
502b9b64 JB |
806 | register struct frame_glyphs *current_frame, *desired_frame; |
807 | register FRAME_PTR frame = XFRAME (w->frame); | |
4588ec20 JB |
808 | int start = XFASTINT (w->left); |
809 | int end = XFASTINT (w->left) + XFASTINT (w->width); | |
810 | int bot = XFASTINT (w->top) + XFASTINT (w->height); | |
811 | ||
502b9b64 JB |
812 | current_frame = FRAME_CURRENT_GLYPHS (frame); |
813 | desired_frame = FRAME_DESIRED_GLYPHS (frame); | |
4588ec20 JB |
814 | |
815 | for (vpos = XFASTINT (w->top); vpos < bot; vpos++) | |
816 | { | |
502b9b64 | 817 | if (current_frame->enable[vpos] && desired_frame->enable[vpos]) |
4588ec20 JB |
818 | { |
819 | if (start > 0) | |
820 | { | |
821 | int len; | |
822 | ||
502b9b64 | 823 | bcopy (current_frame->glyphs[vpos], |
aec9f5f6 JB |
824 | desired_frame->glyphs[vpos], |
825 | start * sizeof (current_frame->glyphs[vpos])); | |
60a8948a RS |
826 | bcopy (current_frame->charstarts[vpos], |
827 | desired_frame->charstarts[vpos], | |
828 | start * sizeof (current_frame->charstarts[vpos])); | |
502b9b64 JB |
829 | len = min (start, current_frame->used[vpos]); |
830 | if (desired_frame->used[vpos] < len) | |
831 | desired_frame->used[vpos] = len; | |
4588ec20 | 832 | } |
502b9b64 JB |
833 | if (current_frame->used[vpos] > end |
834 | && desired_frame->used[vpos] < current_frame->used[vpos]) | |
4588ec20 | 835 | { |
502b9b64 | 836 | while (desired_frame->used[vpos] < end) |
60a8948a RS |
837 | { |
838 | int used = desired_frame->used[vpos]++; | |
839 | desired_frame->glyphs[vpos][used] = SPACEGLYPH; | |
840 | desired_frame->glyphs[vpos][used] = 0; | |
841 | } | |
502b9b64 JB |
842 | bcopy (current_frame->glyphs[vpos] + end, |
843 | desired_frame->glyphs[vpos] + end, | |
aec9f5f6 JB |
844 | ((current_frame->used[vpos] - end) |
845 | * sizeof (current_frame->glyphs[vpos]))); | |
60a8948a RS |
846 | bcopy (current_frame->charstarts[vpos] + end, |
847 | desired_frame->charstarts[vpos] + end, | |
848 | ((current_frame->used[vpos] - end) | |
849 | * sizeof (current_frame->charstarts[vpos]))); | |
502b9b64 | 850 | desired_frame->used[vpos] = current_frame->used[vpos]; |
4588ec20 JB |
851 | } |
852 | } | |
853 | } | |
854 | } | |
855 | \f | |
856 | #if 0 | |
857 | ||
502b9b64 | 858 | /* If window w does not need to be updated and isn't the full frame wide, |
4588ec20 | 859 | copy all the columns that w does occupy |
502b9b64 JB |
860 | into the FRAME_DESIRED_LINES (frame) from the FRAME_PHYS_LINES (frame) |
861 | so that update_frame will not change those columns. | |
4588ec20 JB |
862 | |
863 | Have not been able to figure out how to use this correctly. */ | |
864 | ||
865 | preserve_my_columns (w) | |
866 | struct window *w; | |
867 | { | |
868 | register int vpos, fin; | |
502b9b64 JB |
869 | register struct frame_glyphs *l1, *l2; |
870 | register FRAME_PTR frame = XFRAME (w->frame); | |
4588ec20 JB |
871 | int start = XFASTINT (w->left); |
872 | int end = XFASTINT (w->left) + XFASTINT (w->width); | |
873 | int bot = XFASTINT (w->top) + XFASTINT (w->height); | |
874 | ||
875 | for (vpos = XFASTINT (w->top); vpos < bot; vpos++) | |
876 | { | |
502b9b64 JB |
877 | if ((l1 = FRAME_DESIRED_GLYPHS (frame)->glyphs[vpos + 1]) |
878 | && (l2 = FRAME_PHYS_GLYPHS (frame)->glyphs[vpos + 1])) | |
4588ec20 JB |
879 | { |
880 | if (l2->length > start && l1->length < l2->length) | |
881 | { | |
882 | fin = l2->length; | |
883 | if (fin > end) fin = end; | |
884 | while (l1->length < start) | |
885 | l1->body[l1->length++] = ' '; | |
886 | bcopy (l2->body + start, l1->body + start, fin - start); | |
887 | l1->length = fin; | |
888 | } | |
889 | } | |
890 | } | |
891 | } | |
892 | ||
893 | #endif | |
894 | \f | |
b64b3980 RS |
895 | /* Adjust by ADJUST the charstart values in window W |
896 | before vpos VPOS, which counts relative to the frame | |
897 | (not relative to W itself). */ | |
898 | ||
899 | void | |
900 | adjust_window_charstarts (w, vpos, adjust) | |
901 | struct window *w; | |
902 | int vpos; | |
903 | int adjust; | |
904 | { | |
905 | int left = XFASTINT (w->left); | |
906 | int top = XFASTINT (w->top); | |
907 | int right = left + window_internal_height (w); | |
908 | int height = window_internal_height (w); | |
909 | int i; | |
910 | ||
911 | for (i = vpos + 1; i < top + height; i++) | |
912 | { | |
913 | int *charstart | |
914 | = FRAME_CURRENT_GLYPHS (XFRAME (WINDOW_FRAME (w)))->charstarts[i]; | |
915 | int j; | |
916 | for (j = left; j < right; j++) | |
917 | if (charstart[j] > 0) | |
918 | charstart[j] += adjust; | |
919 | } | |
920 | } | |
921 | \f | |
4588ec20 JB |
922 | /* On discovering that the redisplay for a window was no good, |
923 | cancel the columns of that window, so that when the window is | |
924 | displayed over again get_display_line will not complain. */ | |
925 | ||
926 | cancel_my_columns (w) | |
927 | struct window *w; | |
928 | { | |
929 | register int vpos; | |
60a8948a RS |
930 | register struct frame_glyphs *desired_glyphs |
931 | = FRAME_DESIRED_GLYPHS (XFRAME (w->frame)); | |
4588ec20 JB |
932 | register int start = XFASTINT (w->left); |
933 | register int bot = XFASTINT (w->top) + XFASTINT (w->height); | |
934 | ||
935 | for (vpos = XFASTINT (w->top); vpos < bot; vpos++) | |
936 | if (desired_glyphs->enable[vpos] | |
937 | && desired_glyphs->used[vpos] >= start) | |
938 | desired_glyphs->used[vpos] = start; | |
939 | } | |
940 | \f | |
502b9b64 | 941 | /* These functions try to perform directly and immediately on the frame |
4588ec20 JB |
942 | the necessary output for one change in the buffer. |
943 | They may return 0 meaning nothing was done if anything is difficult, | |
944 | or 1 meaning the output was performed properly. | |
502b9b64 | 945 | They assume that the frame was up to date before the buffer |
94aa5d2d | 946 | change being displayed. They make various other assumptions too; |
4588ec20 JB |
947 | see command_loop_1 where these are called. */ |
948 | ||
949 | int | |
950 | direct_output_for_insert (g) | |
951 | int g; | |
952 | { | |
502b9b64 JB |
953 | register FRAME_PTR frame = selected_frame; |
954 | register struct frame_glyphs *current_frame | |
955 | = FRAME_CURRENT_GLYPHS (frame); | |
4588ec20 JB |
956 | |
957 | #ifndef COMPILER_REGISTER_BUG | |
958 | register | |
959 | #endif /* COMPILER_REGISTER_BUG */ | |
960 | struct window *w = XWINDOW (selected_window); | |
961 | #ifndef COMPILER_REGISTER_BUG | |
962 | register | |
963 | #endif /* COMPILER_REGISTER_BUG */ | |
502b9b64 | 964 | int hpos = FRAME_CURSOR_X (frame); |
4588ec20 JB |
965 | #ifndef COMPILER_REGISTER_BUG |
966 | register | |
967 | #endif /* COMPILER_REGISTER_BUG */ | |
502b9b64 | 968 | int vpos = FRAME_CURSOR_Y (frame); |
4588ec20 | 969 | |
fa61c701 JB |
970 | /* Give up if about to continue line. */ |
971 | if (hpos >= XFASTINT (w->left) + window_internal_width (w) - 1 | |
972 | ||
4588ec20 JB |
973 | /* Avoid losing if cursor is in invisible text off left margin */ |
974 | || (XINT (w->hscroll) && hpos == XFASTINT (w->left)) | |
975 | ||
976 | /* Give up if cursor outside window (in minibuf, probably) */ | |
648fa17d | 977 | || cursor_in_echo_area |
502b9b64 JB |
978 | || FRAME_CURSOR_Y (frame) < XFASTINT (w->top) |
979 | || FRAME_CURSOR_Y (frame) >= XFASTINT (w->top) + XFASTINT (w->height) | |
4588ec20 | 980 | |
502b9b64 | 981 | /* Give up if cursor not really at FRAME_CURSOR_X, FRAME_CURSOR_Y */ |
4588ec20 JB |
982 | || !display_completed |
983 | ||
984 | /* Give up if buffer appears in two places. */ | |
985 | || buffer_shared > 1 | |
986 | ||
d169fe39 RS |
987 | #ifdef USE_TEXT_PROPERTIES |
988 | /* Intervals have already been adjusted, point is after the | |
989 | character that was just inserted. */ | |
ef4d2f9e | 990 | /* Give up if character is invisible. */ |
d169fe39 RS |
991 | /* Give up if character has a face property. |
992 | At the moment we only lose at end of line or end of buffer | |
993 | and only with faces that have some background */ | |
994 | /* Instead of wasting time, give up if character has any text properties */ | |
995 | || ! NILP (Ftext_properties_at (XFASTINT (point - 1), Qnil)) | |
996 | #endif | |
997 | ||
4588ec20 JB |
998 | /* Give up if w is minibuffer and a message is being displayed there */ |
999 | || (MINI_WINDOW_P (w) && echo_area_glyphs)) | |
1000 | return 0; | |
1001 | ||
517b2e01 JB |
1002 | { |
1003 | #ifdef HAVE_X_WINDOWS | |
1004 | int dummy; | |
90b5299a | 1005 | int face = compute_char_face (frame, w, point - 1, -1, -1, &dummy, point); |
517b2e01 | 1006 | #endif |
a1c3de84 | 1007 | current_frame->glyphs[vpos][hpos] = MAKE_GLYPH (frame, g, face); |
60a8948a | 1008 | current_frame->charstarts[vpos][hpos] = point; |
b64b3980 | 1009 | adjust_window_charstarts (w, vpos, 1); |
517b2e01 | 1010 | } |
4588ec20 JB |
1011 | unchanged_modified = MODIFF; |
1012 | beg_unchanged = GPT - BEG; | |
1013 | XFASTINT (w->last_point) = point; | |
1014 | XFASTINT (w->last_point_x) = hpos; | |
1015 | XFASTINT (w->last_modified) = MODIFF; | |
1016 | ||
1017 | reassert_line_highlight (0, vpos); | |
502b9b64 | 1018 | write_glyphs (¤t_frame->glyphs[vpos][hpos], 1); |
4588ec20 | 1019 | fflush (stdout); |
502b9b64 JB |
1020 | ++FRAME_CURSOR_X (frame); |
1021 | if (hpos == current_frame->used[vpos]) | |
4588ec20 | 1022 | { |
502b9b64 JB |
1023 | current_frame->used[vpos] = hpos + 1; |
1024 | current_frame->glyphs[vpos][hpos + 1] = 0; | |
4588ec20 JB |
1025 | } |
1026 | ||
1027 | return 1; | |
1028 | } | |
1029 | ||
1030 | int | |
1031 | direct_output_forward_char (n) | |
1032 | int n; | |
1033 | { | |
502b9b64 | 1034 | register FRAME_PTR frame = selected_frame; |
4588ec20 | 1035 | register struct window *w = XWINDOW (selected_window); |
d169fe39 | 1036 | int position; |
ea0d86af RS |
1037 | int hpos = FRAME_CURSOR_X (frame); |
1038 | ||
1039 | /* Give up if in truncated text at end of line. */ | |
1040 | if (hpos >= XFASTINT (w->left) + window_internal_width (w) - 1) | |
1041 | return 0; | |
1042 | ||
a9764248 JB |
1043 | /* Avoid losing if cursor is in invisible text off left margin |
1044 | or about to go off either side of window. */ | |
502b9b64 | 1045 | if ((FRAME_CURSOR_X (frame) == XFASTINT (w->left) |
a9764248 JB |
1046 | && (XINT (w->hscroll) || n < 0)) |
1047 | || (n > 0 | |
fa61c701 | 1048 | && (FRAME_CURSOR_X (frame) + 1 >= window_internal_width (w) - 1)) |
648fa17d | 1049 | || cursor_in_echo_area) |
4588ec20 | 1050 | return 0; |
d169fe39 | 1051 | |
de83c314 RS |
1052 | /* Can't use direct output if highlighting a region. */ |
1053 | if (!NILP (Vtransient_mark_mode) && !NILP (current_buffer->mark_active)) | |
1054 | return 0; | |
1055 | ||
d169fe39 RS |
1056 | #ifdef USE_TEXT_PROPERTIES |
1057 | /* Don't use direct output next to an invisible character | |
1058 | since we might need to do something special. */ | |
1059 | ||
2f24f5ac RS |
1060 | XFASTINT (position) = point; |
1061 | if (XFASTINT (position) < ZV | |
294634fb | 1062 | && ! NILP (Fget_char_property (position, |
2f24f5ac | 1063 | Qinvisible, |
294634fb KH |
1064 | selected_window))) |
1065 | return 0; | |
d169fe39 | 1066 | |
2f24f5ac RS |
1067 | XFASTINT (position) = point - 1; |
1068 | if (XFASTINT (position) >= BEGV | |
294634fb | 1069 | && ! NILP (Fget_char_property (position, |
2f24f5ac | 1070 | Qinvisible, |
294634fb KH |
1071 | selected_window))) |
1072 | return 0; | |
d169fe39 RS |
1073 | #endif |
1074 | ||
502b9b64 JB |
1075 | FRAME_CURSOR_X (frame) += n; |
1076 | XFASTINT (w->last_point_x) = FRAME_CURSOR_X (frame); | |
4588ec20 | 1077 | XFASTINT (w->last_point) = point; |
502b9b64 | 1078 | cursor_to (FRAME_CURSOR_Y (frame), FRAME_CURSOR_X (frame)); |
4588ec20 | 1079 | fflush (stdout); |
d169fe39 | 1080 | |
4588ec20 JB |
1081 | return 1; |
1082 | } | |
1083 | \f | |
1084 | static void update_line (); | |
1085 | ||
502b9b64 | 1086 | /* Update frame F based on the data in FRAME_DESIRED_GLYPHS. |
4588ec20 JB |
1087 | Value is nonzero if redisplay stopped due to pending input. |
1088 | FORCE nonzero means do not stop for pending input. */ | |
1089 | ||
1090 | int | |
502b9b64 JB |
1091 | update_frame (f, force, inhibit_hairy_id) |
1092 | FRAME_PTR f; | |
4588ec20 JB |
1093 | int force; |
1094 | int inhibit_hairy_id; | |
1095 | { | |
502b9b64 JB |
1096 | register struct frame_glyphs *current_frame = FRAME_CURRENT_GLYPHS (f); |
1097 | register struct frame_glyphs *desired_frame = FRAME_DESIRED_GLYPHS (f); | |
4588ec20 JB |
1098 | register int i; |
1099 | int pause; | |
1100 | int preempt_count = baud_rate / 2400 + 1; | |
1101 | extern input_pending; | |
1102 | #ifdef HAVE_X_WINDOWS | |
1103 | register int downto, leftmost; | |
1104 | #endif | |
1105 | ||
d88c2b9e RS |
1106 | if (preempt_count <= 0) |
1107 | preempt_count = 1; | |
1108 | ||
502b9b64 | 1109 | if (FRAME_HEIGHT (f) == 0) abort (); /* Some bug zeros some core */ |
4588ec20 JB |
1110 | |
1111 | detect_input_pending (); | |
1112 | if (input_pending && !force) | |
1113 | { | |
1114 | pause = 1; | |
1115 | goto do_pause; | |
1116 | } | |
1117 | ||
502b9b64 | 1118 | update_begin (f); |
4588ec20 JB |
1119 | |
1120 | if (!line_ins_del_ok) | |
1121 | inhibit_hairy_id = 1; | |
1122 | ||
efb859b4 JB |
1123 | /* See if any of the desired lines are enabled; don't compute for |
1124 | i/d line if just want cursor motion. */ | |
502b9b64 JB |
1125 | for (i = 0; i < FRAME_HEIGHT (f); i++) |
1126 | if (desired_frame->enable[i]) | |
4588ec20 JB |
1127 | break; |
1128 | ||
1129 | /* Try doing i/d line, if not yet inhibited. */ | |
502b9b64 JB |
1130 | if (!inhibit_hairy_id && i < FRAME_HEIGHT (f)) |
1131 | force |= scrolling (f); | |
4588ec20 JB |
1132 | |
1133 | /* Update the individual lines as needed. Do bottom line first. */ | |
1134 | ||
502b9b64 JB |
1135 | if (desired_frame->enable[FRAME_HEIGHT (f) - 1]) |
1136 | update_line (f, FRAME_HEIGHT (f) - 1); | |
4588ec20 JB |
1137 | |
1138 | #ifdef HAVE_X_WINDOWS | |
b6a65ac2 | 1139 | if (FRAME_X_P (f)) |
4588ec20 | 1140 | { |
502b9b64 JB |
1141 | leftmost = downto = f->display.x->internal_border_width; |
1142 | if (desired_frame->enable[0]) | |
4588ec20 | 1143 | { |
502b9b64 JB |
1144 | current_frame->top_left_x[FRAME_HEIGHT (f) - 1] = leftmost; |
1145 | current_frame->top_left_y[FRAME_HEIGHT (f) - 1] | |
1146 | = PIXEL_HEIGHT (f) - f->display.x->internal_border_width | |
448fd7c0 | 1147 | - current_frame->pix_height[FRAME_HEIGHT (f) - 1]; |
502b9b64 JB |
1148 | current_frame->top_left_x[0] = leftmost; |
1149 | current_frame->top_left_y[0] = downto; | |
4588ec20 JB |
1150 | } |
1151 | } | |
1152 | #endif /* HAVE_X_WINDOWS */ | |
1153 | ||
1154 | /* Now update the rest of the lines. */ | |
502b9b64 | 1155 | for (i = 0; i < FRAME_HEIGHT (f) - 1 && (force || !input_pending); i++) |
4588ec20 | 1156 | { |
502b9b64 | 1157 | if (desired_frame->enable[i]) |
4588ec20 | 1158 | { |
b6a65ac2 | 1159 | if (FRAME_TERMCAP_P (f)) |
4588ec20 JB |
1160 | { |
1161 | /* Flush out every so many lines. | |
1162 | Also flush out if likely to have more than 1k buffered | |
1163 | otherwise. I'm told that some telnet connections get | |
1164 | really screwed by more than 1k output at once. */ | |
1165 | int outq = PENDING_OUTPUT_COUNT (stdout); | |
1166 | if (outq > 900 | |
1167 | || (outq > 20 && ((i - 1) % preempt_count == 0))) | |
1168 | { | |
1169 | fflush (stdout); | |
1170 | if (preempt_count == 1) | |
1171 | { | |
a41f8bed JB |
1172 | #ifdef EMACS_OUTQSIZE |
1173 | if (EMACS_OUTQSIZE (0, &outq) < 0) | |
4588ec20 JB |
1174 | /* Probably not a tty. Ignore the error and reset |
1175 | * the outq count. */ | |
1176 | outq = PENDING_OUTPUT_COUNT (stdout); | |
1177 | #endif | |
1178 | outq *= 10; | |
4d9c0ca4 | 1179 | if (baud_rate >= outq) |
d88c2b9e | 1180 | sleep (outq / baud_rate); |
4588ec20 JB |
1181 | } |
1182 | } | |
1183 | if ((i - 1) % preempt_count == 0) | |
1184 | detect_input_pending (); | |
1185 | } | |
1186 | ||
502b9b64 | 1187 | update_line (f, i); |
4588ec20 | 1188 | #ifdef HAVE_X_WINDOWS |
b6a65ac2 | 1189 | if (FRAME_X_P (f)) |
4588ec20 | 1190 | { |
502b9b64 JB |
1191 | current_frame->top_left_y[i] = downto; |
1192 | current_frame->top_left_x[i] = leftmost; | |
4588ec20 JB |
1193 | } |
1194 | #endif /* HAVE_X_WINDOWS */ | |
1195 | } | |
1196 | ||
e5d77022 | 1197 | #ifdef HAVE_X_WINDOWS |
b6a65ac2 | 1198 | if (FRAME_X_P (f)) |
448fd7c0 | 1199 | downto += current_frame->pix_height[i]; |
e5d77022 | 1200 | #endif |
4588ec20 | 1201 | } |
502b9b64 | 1202 | pause = (i < FRAME_HEIGHT (f) - 1) ? i : 0; |
4588ec20 JB |
1203 | |
1204 | /* Now just clean up termcap drivers and set cursor, etc. */ | |
1205 | if (!pause) | |
1206 | { | |
648fa17d JB |
1207 | if (cursor_in_echo_area |
1208 | && FRAME_HAS_MINIBUF_P (f)) | |
1113d9db | 1209 | { |
648fa17d JB |
1210 | int top = XINT (XWINDOW (FRAME_MINIBUF_WINDOW (f))->top); |
1211 | int row, col; | |
1212 | ||
1213 | if (cursor_in_echo_area < 0) | |
1214 | { | |
1215 | row = top; | |
1216 | col = 0; | |
1217 | } | |
1113d9db | 1218 | else |
648fa17d JB |
1219 | { |
1220 | /* If the minibuffer is several lines high, find the last | |
1221 | line that has any text on it. */ | |
1222 | row = FRAME_HEIGHT (f); | |
1223 | do | |
1224 | { | |
1225 | row--; | |
1226 | if (current_frame->enable[row]) | |
1227 | col = current_frame->used[row]; | |
1228 | else | |
1229 | col = 0; | |
1230 | } | |
1231 | while (row > top && col == 0); | |
1232 | ||
1233 | if (col >= FRAME_WIDTH (f)) | |
1234 | { | |
1235 | col = 0; | |
1236 | if (row < FRAME_HEIGHT (f) - 1) | |
1237 | row++; | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | cursor_to (row, col); | |
1113d9db | 1242 | } |
4588ec20 | 1243 | else |
502b9b64 JB |
1244 | cursor_to (FRAME_CURSOR_Y (f), max (min (FRAME_CURSOR_X (f), |
1245 | FRAME_WIDTH (f) - 1), 0)); | |
4588ec20 JB |
1246 | } |
1247 | ||
502b9b64 | 1248 | update_end (f); |
4588ec20 JB |
1249 | |
1250 | if (termscript) | |
1251 | fflush (termscript); | |
1252 | fflush (stdout); | |
1253 | ||
1254 | /* Here if output is preempted because input is detected. */ | |
1255 | do_pause: | |
1256 | ||
502b9b64 | 1257 | if (FRAME_HEIGHT (f) == 0) abort (); /* Some bug zeros some core */ |
4588ec20 JB |
1258 | display_completed = !pause; |
1259 | ||
502b9b64 | 1260 | bzero (desired_frame->enable, FRAME_HEIGHT (f)); |
4588ec20 JB |
1261 | return pause; |
1262 | } | |
1263 | ||
1264 | /* Called when about to quit, to check for doing so | |
1265 | at an improper time. */ | |
1266 | ||
1267 | void | |
1268 | quit_error_check () | |
1269 | { | |
502b9b64 | 1270 | if (FRAME_DESIRED_GLYPHS (selected_frame) == 0) |
4588ec20 | 1271 | return; |
502b9b64 | 1272 | if (FRAME_DESIRED_GLYPHS (selected_frame)->enable[0]) |
4588ec20 | 1273 | abort (); |
502b9b64 | 1274 | if (FRAME_DESIRED_GLYPHS (selected_frame)->enable[FRAME_HEIGHT (selected_frame) - 1]) |
4588ec20 JB |
1275 | abort (); |
1276 | } | |
1277 | \f | |
1278 | /* Decide what insert/delete line to do, and do it */ | |
1279 | ||
1280 | extern void scrolling_1 (); | |
1281 | ||
502b9b64 JB |
1282 | scrolling (frame) |
1283 | FRAME_PTR frame; | |
4588ec20 JB |
1284 | { |
1285 | int unchanged_at_top, unchanged_at_bottom; | |
1286 | int window_size; | |
1287 | int changed_lines; | |
502b9b64 JB |
1288 | int *old_hash = (int *) alloca (FRAME_HEIGHT (frame) * sizeof (int)); |
1289 | int *new_hash = (int *) alloca (FRAME_HEIGHT (frame) * sizeof (int)); | |
1290 | int *draw_cost = (int *) alloca (FRAME_HEIGHT (frame) * sizeof (int)); | |
4588ec20 | 1291 | register int i; |
502b9b64 JB |
1292 | int free_at_end_vpos = FRAME_HEIGHT (frame); |
1293 | register struct frame_glyphs *current_frame = FRAME_CURRENT_GLYPHS (frame); | |
1294 | register struct frame_glyphs *desired_frame = FRAME_DESIRED_GLYPHS (frame); | |
4588ec20 JB |
1295 | |
1296 | /* Compute hash codes of all the lines. | |
1297 | Also calculate number of changed lines, | |
1298 | number of unchanged lines at the beginning, | |
1299 | and number of unchanged lines at the end. */ | |
1300 | ||
1301 | changed_lines = 0; | |
1302 | unchanged_at_top = 0; | |
502b9b64 JB |
1303 | unchanged_at_bottom = FRAME_HEIGHT (frame); |
1304 | for (i = 0; i < FRAME_HEIGHT (frame); i++) | |
4588ec20 JB |
1305 | { |
1306 | /* Give up on this scrolling if some old lines are not enabled. */ | |
502b9b64 | 1307 | if (!current_frame->enable[i]) |
4588ec20 | 1308 | return 0; |
502b9b64 JB |
1309 | old_hash[i] = line_hash_code (current_frame, i); |
1310 | if (! desired_frame->enable[i]) | |
4588ec20 JB |
1311 | new_hash[i] = old_hash[i]; |
1312 | else | |
502b9b64 | 1313 | new_hash[i] = line_hash_code (desired_frame, i); |
4588ec20 JB |
1314 | |
1315 | if (old_hash[i] != new_hash[i]) | |
1316 | { | |
1317 | changed_lines++; | |
502b9b64 | 1318 | unchanged_at_bottom = FRAME_HEIGHT (frame) - i - 1; |
4588ec20 JB |
1319 | } |
1320 | else if (i == unchanged_at_top) | |
1321 | unchanged_at_top++; | |
502b9b64 | 1322 | draw_cost[i] = line_draw_cost (desired_frame, i); |
4588ec20 JB |
1323 | } |
1324 | ||
1325 | /* If changed lines are few, don't allow preemption, don't scroll. */ | |
1326 | if (changed_lines < baud_rate / 2400 | |
502b9b64 | 1327 | || unchanged_at_bottom == FRAME_HEIGHT (frame)) |
4588ec20 JB |
1328 | return 1; |
1329 | ||
502b9b64 | 1330 | window_size = (FRAME_HEIGHT (frame) - unchanged_at_top |
4588ec20 JB |
1331 | - unchanged_at_bottom); |
1332 | ||
1333 | if (scroll_region_ok) | |
1334 | free_at_end_vpos -= unchanged_at_bottom; | |
502b9b64 | 1335 | else if (memory_below_frame) |
4588ec20 JB |
1336 | free_at_end_vpos = -1; |
1337 | ||
1338 | /* If large window, fast terminal and few lines in common between | |
502b9b64 | 1339 | current frame and desired frame, don't bother with i/d calc. */ |
4588ec20 JB |
1340 | if (window_size >= 18 && baud_rate > 2400 |
1341 | && (window_size >= | |
1342 | 10 * scrolling_max_lines_saved (unchanged_at_top, | |
502b9b64 | 1343 | FRAME_HEIGHT (frame) - unchanged_at_bottom, |
4588ec20 JB |
1344 | old_hash, new_hash, draw_cost))) |
1345 | return 0; | |
1346 | ||
502b9b64 | 1347 | scrolling_1 (frame, window_size, unchanged_at_top, unchanged_at_bottom, |
4588ec20 JB |
1348 | draw_cost + unchanged_at_top - 1, |
1349 | old_hash + unchanged_at_top - 1, | |
1350 | new_hash + unchanged_at_top - 1, | |
1351 | free_at_end_vpos - unchanged_at_top); | |
1352 | ||
1353 | return 0; | |
1354 | } | |
1355 | \f | |
1356 | /* Return the offset in its buffer of the character at location col, line | |
1357 | in the given window. */ | |
1358 | int | |
1359 | buffer_posn_from_coords (window, col, line) | |
1360 | struct window *window; | |
1361 | int col, line; | |
1362 | { | |
ef0fdbb1 | 1363 | int hscroll = XINT (window->hscroll); |
4588ec20 JB |
1364 | int window_left = XFASTINT (window->left); |
1365 | ||
1366 | /* The actual width of the window is window->width less one for the | |
efb859b4 JB |
1367 | DISP_CONTINUE_GLYPH, and less one if it's not the rightmost |
1368 | window. */ | |
fa61c701 | 1369 | int window_width = window_internal_width (window) - 1; |
4588ec20 | 1370 | |
efb859b4 | 1371 | int startp = marker_position (window->start); |
4588ec20 JB |
1372 | |
1373 | /* Since compute_motion will only operate on the current buffer, | |
1374 | we need to save the old one and restore it when we're done. */ | |
1375 | struct buffer *old_current_buffer = current_buffer; | |
efb859b4 | 1376 | struct position *posn; |
4588ec20 JB |
1377 | |
1378 | current_buffer = XBUFFER (window->buffer); | |
1379 | ||
502b9b64 JB |
1380 | /* It would be nice if we could use FRAME_CURRENT_GLYPHS (XFRAME |
1381 | (window->frame))->bufp to avoid scanning from the very top of | |
efb859b4 JB |
1382 | the window, but it isn't maintained correctly, and I'm not even |
1383 | sure I will keep it. */ | |
1384 | posn = compute_motion (startp, 0, | |
1385 | (window == XWINDOW (minibuf_window) && startp == 1 | |
ef0fdbb1 KH |
1386 | ? minibuf_prompt_width : 0) |
1387 | + (hscroll ? 1 - hscroll : 0), | |
fb0f454a | 1388 | ZV, line, col, |
ef0fdbb1 | 1389 | window_width, hscroll, 0); |
4588ec20 JB |
1390 | |
1391 | current_buffer = old_current_buffer; | |
1392 | ||
502b9b64 | 1393 | /* compute_motion considers frame points past the end of a line |
efb859b4 JB |
1394 | to be *after* the newline, i.e. at the start of the next line. |
1395 | This is reasonable, but not really what we want. So if the | |
1396 | result is on a line below LINE, back it up one character. */ | |
1397 | if (posn->vpos > line) | |
1398 | return posn->bufpos - 1; | |
1399 | else | |
1400 | return posn->bufpos; | |
4588ec20 JB |
1401 | } |
1402 | \f | |
1403 | static int | |
1404 | count_blanks (r) | |
1405 | register GLYPH *r; | |
1406 | { | |
1407 | register GLYPH *p = r; | |
94aa5d2d RS |
1408 | while (*p++ == SPACEGLYPH); |
1409 | return p - r - 1; | |
4588ec20 JB |
1410 | } |
1411 | ||
1412 | static int | |
1413 | count_match (str1, str2) | |
1414 | GLYPH *str1, *str2; | |
1415 | { | |
1416 | register GLYPH *p1 = str1; | |
1417 | register GLYPH *p2 = str2; | |
1418 | while (*p1++ == *p2++); | |
1419 | return p1 - str1 - 1; | |
1420 | } | |
1421 | ||
1422 | /* Char insertion/deletion cost vector, from term.c */ | |
1423 | extern int *char_ins_del_vector; | |
1424 | ||
945807a3 | 1425 | #define char_ins_del_cost(f) (&char_ins_del_vector[FRAME_WIDTH((f))]) |
4588ec20 JB |
1426 | |
1427 | static void | |
502b9b64 JB |
1428 | update_line (frame, vpos) |
1429 | register FRAME_PTR frame; | |
4588ec20 JB |
1430 | int vpos; |
1431 | { | |
1432 | register GLYPH *obody, *nbody, *op1, *op2, *np1, *temp; | |
60a8948a | 1433 | int *temp1; |
4588ec20 JB |
1434 | int tem; |
1435 | int osp, nsp, begmatch, endmatch, olen, nlen; | |
1436 | int save; | |
502b9b64 JB |
1437 | register struct frame_glyphs *current_frame |
1438 | = FRAME_CURRENT_GLYPHS (frame); | |
1439 | register struct frame_glyphs *desired_frame | |
1440 | = FRAME_DESIRED_GLYPHS (frame); | |
4588ec20 | 1441 | |
502b9b64 JB |
1442 | if (desired_frame->highlight[vpos] |
1443 | != (current_frame->enable[vpos] && current_frame->highlight[vpos])) | |
4588ec20 | 1444 | { |
502b9b64 JB |
1445 | change_line_highlight (desired_frame->highlight[vpos], vpos, |
1446 | (current_frame->enable[vpos] ? | |
1447 | current_frame->used[vpos] : 0)); | |
1448 | current_frame->enable[vpos] = 0; | |
4588ec20 JB |
1449 | } |
1450 | else | |
502b9b64 | 1451 | reassert_line_highlight (desired_frame->highlight[vpos], vpos); |
4588ec20 | 1452 | |
502b9b64 | 1453 | if (! current_frame->enable[vpos]) |
4588ec20 JB |
1454 | { |
1455 | olen = 0; | |
1456 | } | |
1457 | else | |
1458 | { | |
502b9b64 JB |
1459 | obody = current_frame->glyphs[vpos]; |
1460 | olen = current_frame->used[vpos]; | |
1461 | if (! current_frame->highlight[vpos]) | |
4588ec20 JB |
1462 | { |
1463 | if (!must_write_spaces) | |
1464 | while (obody[olen - 1] == SPACEGLYPH && olen > 0) | |
1465 | olen--; | |
1466 | } | |
1467 | else | |
1468 | { | |
1469 | /* For an inverse-video line, remember we gave it | |
502b9b64 | 1470 | spaces all the way to the frame edge |
4588ec20 JB |
1471 | so that the reverse video extends all the way across. */ |
1472 | ||
502b9b64 | 1473 | while (olen < FRAME_WIDTH (frame) - 1) |
4588ec20 JB |
1474 | obody[olen++] = SPACEGLYPH; |
1475 | } | |
1476 | } | |
1477 | ||
1478 | /* One way or another, this will enable the line being updated. */ | |
502b9b64 JB |
1479 | current_frame->enable[vpos] = 1; |
1480 | current_frame->used[vpos] = desired_frame->used[vpos]; | |
1481 | current_frame->highlight[vpos] = desired_frame->highlight[vpos]; | |
1482 | current_frame->bufp[vpos] = desired_frame->bufp[vpos]; | |
4588ec20 JB |
1483 | |
1484 | #ifdef HAVE_X_WINDOWS | |
b6a65ac2 | 1485 | if (FRAME_X_P (frame)) |
4588ec20 | 1486 | { |
502b9b64 JB |
1487 | current_frame->pix_width[vpos] |
1488 | = current_frame->used[vpos] | |
1489 | * FONT_WIDTH (frame->display.x->font); | |
1490 | current_frame->pix_height[vpos] | |
1491 | = FONT_HEIGHT (frame->display.x->font); | |
4588ec20 JB |
1492 | } |
1493 | #endif /* HAVE_X_WINDOWS */ | |
1494 | ||
502b9b64 | 1495 | if (!desired_frame->enable[vpos]) |
4588ec20 JB |
1496 | { |
1497 | nlen = 0; | |
1498 | goto just_erase; | |
1499 | } | |
1500 | ||
502b9b64 JB |
1501 | nbody = desired_frame->glyphs[vpos]; |
1502 | nlen = desired_frame->used[vpos]; | |
4588ec20 JB |
1503 | |
1504 | /* Pretend trailing spaces are not there at all, | |
1505 | unless for one reason or another we must write all spaces. */ | |
502b9b64 | 1506 | if (! desired_frame->highlight[vpos]) |
4588ec20 JB |
1507 | { |
1508 | if (!must_write_spaces) | |
1509 | /* We know that the previous character byte contains 0. */ | |
1510 | while (nbody[nlen - 1] == SPACEGLYPH) | |
1511 | nlen--; | |
1512 | } | |
1513 | else | |
1514 | { | |
1515 | /* For an inverse-video line, give it extra trailing spaces | |
502b9b64 | 1516 | all the way to the frame edge |
4588ec20 JB |
1517 | so that the reverse video extends all the way across. */ |
1518 | ||
502b9b64 | 1519 | while (nlen < FRAME_WIDTH (frame) - 1) |
4588ec20 JB |
1520 | nbody[nlen++] = SPACEGLYPH; |
1521 | } | |
1522 | ||
1523 | /* If there's no i/d char, quickly do the best we can without it. */ | |
1524 | if (!char_ins_del_ok) | |
1525 | { | |
1526 | int i,j; | |
1527 | ||
76426794 RS |
1528 | #if 0 |
1529 | if (FRAME_X_P (frame)) | |
1530 | { | |
1531 | /* Under X, erase everything we are going to rewrite, | |
1532 | and rewrite everything from the first char that's changed. | |
1533 | This is part of supporting fonts like Courier | |
1534 | whose chars can overlap outside the char width. */ | |
1535 | for (i = 0; i < nlen; i++) | |
1536 | if (i >= olen || nbody[i] != obody[i]) | |
1537 | break; | |
1538 | ||
1539 | cursor_to (vpos, i); | |
1540 | if (i != olen) | |
1541 | clear_end_of_line (olen); | |
1542 | write_glyphs (nbody + i, nlen - i); | |
1543 | } | |
1544 | else | |
1545 | {} | |
1546 | #endif /* 0 */ | |
4588ec20 JB |
1547 | for (i = 0; i < nlen; i++) |
1548 | { | |
1549 | if (i >= olen || nbody[i] != obody[i]) /* A non-matching char. */ | |
1550 | { | |
1551 | cursor_to (vpos, i); | |
1552 | for (j = 1; (i + j < nlen && | |
1553 | (i + j >= olen || nbody[i+j] != obody[i+j])); | |
1554 | j++); | |
1555 | ||
1556 | /* Output this run of non-matching chars. */ | |
1557 | write_glyphs (nbody + i, j); | |
1558 | i += j - 1; | |
1559 | ||
1560 | /* Now find the next non-match. */ | |
1561 | } | |
1562 | } | |
1563 | ||
1564 | /* Clear the rest of the line, or the non-clear part of it. */ | |
1565 | if (olen > nlen) | |
1566 | { | |
1567 | cursor_to (vpos, nlen); | |
1568 | clear_end_of_line (olen); | |
1569 | } | |
1570 | ||
502b9b64 JB |
1571 | /* Exchange contents between current_frame and new_frame. */ |
1572 | temp = desired_frame->glyphs[vpos]; | |
1573 | desired_frame->glyphs[vpos] = current_frame->glyphs[vpos]; | |
1574 | current_frame->glyphs[vpos] = temp; | |
4588ec20 | 1575 | |
60a8948a RS |
1576 | /* Exchange charstarts between current_frame and new_frame. */ |
1577 | temp1 = desired_frame->charstarts[vpos]; | |
1578 | desired_frame->charstarts[vpos] = current_frame->charstarts[vpos]; | |
1579 | current_frame->charstarts[vpos] = temp1; | |
1580 | ||
4588ec20 JB |
1581 | return; |
1582 | } | |
1583 | ||
1584 | if (!olen) | |
1585 | { | |
502b9b64 | 1586 | nsp = (must_write_spaces || desired_frame->highlight[vpos]) |
4588ec20 JB |
1587 | ? 0 : count_blanks (nbody); |
1588 | if (nlen > nsp) | |
1589 | { | |
1590 | cursor_to (vpos, nsp); | |
1591 | write_glyphs (nbody + nsp, nlen - nsp); | |
1592 | } | |
1593 | ||
502b9b64 JB |
1594 | /* Exchange contents between current_frame and new_frame. */ |
1595 | temp = desired_frame->glyphs[vpos]; | |
1596 | desired_frame->glyphs[vpos] = current_frame->glyphs[vpos]; | |
1597 | current_frame->glyphs[vpos] = temp; | |
4588ec20 | 1598 | |
60a8948a RS |
1599 | /* Exchange charstarts between current_frame and new_frame. */ |
1600 | temp1 = desired_frame->charstarts[vpos]; | |
1601 | desired_frame->charstarts[vpos] = current_frame->charstarts[vpos]; | |
1602 | current_frame->charstarts[vpos] = temp1; | |
1603 | ||
4588ec20 JB |
1604 | return; |
1605 | } | |
1606 | ||
1607 | obody[olen] = 1; | |
1608 | save = nbody[nlen]; | |
1609 | nbody[nlen] = 0; | |
1610 | ||
1611 | /* Compute number of leading blanks in old and new contents. */ | |
1612 | osp = count_blanks (obody); | |
502b9b64 | 1613 | if (!desired_frame->highlight[vpos]) |
4588ec20 JB |
1614 | nsp = count_blanks (nbody); |
1615 | else | |
1616 | nsp = 0; | |
1617 | ||
1618 | /* Compute number of matching chars starting with first nonblank. */ | |
1619 | begmatch = count_match (obody + osp, nbody + nsp); | |
1620 | ||
1621 | /* Spaces in new match implicit space past the end of old. */ | |
1622 | /* A bug causing this to be a no-op was fixed in 18.29. */ | |
1623 | if (!must_write_spaces && osp + begmatch == olen) | |
1624 | { | |
1625 | np1 = nbody + nsp; | |
1626 | while (np1[begmatch] == SPACEGLYPH) | |
1627 | begmatch++; | |
1628 | } | |
1629 | ||
1630 | /* Avoid doing insert/delete char | |
1631 | just cause number of leading spaces differs | |
1632 | when the following text does not match. */ | |
1633 | if (begmatch == 0 && osp != nsp) | |
1634 | osp = nsp = min (osp, nsp); | |
1635 | ||
1636 | /* Find matching characters at end of line */ | |
1637 | op1 = obody + olen; | |
1638 | np1 = nbody + nlen; | |
1639 | op2 = op1 + begmatch - min (olen - osp, nlen - nsp); | |
1640 | while (op1 > op2 && op1[-1] == np1[-1]) | |
1641 | { | |
1642 | op1--; | |
1643 | np1--; | |
1644 | } | |
1645 | endmatch = obody + olen - op1; | |
1646 | ||
1647 | /* Put correct value back in nbody[nlen]. | |
1648 | This is important because direct_output_for_insert | |
1649 | can write into the line at a later point. | |
1650 | If this screws up the zero at the end of the line, re-establish it. */ | |
1651 | nbody[nlen] = save; | |
1652 | obody[olen] = 0; | |
1653 | ||
1654 | /* tem gets the distance to insert or delete. | |
1655 | endmatch is how many characters we save by doing so. | |
1656 | Is it worth it? */ | |
1657 | ||
1658 | tem = (nlen - nsp) - (olen - osp); | |
1659 | if (endmatch && tem | |
502b9b64 | 1660 | && (!char_ins_del_ok || endmatch <= char_ins_del_cost (frame)[tem])) |
4588ec20 JB |
1661 | endmatch = 0; |
1662 | ||
1663 | /* nsp - osp is the distance to insert or delete. | |
1664 | If that is nonzero, begmatch is known to be nonzero also. | |
1665 | begmatch + endmatch is how much we save by doing the ins/del. | |
1666 | Is it worth it? */ | |
1667 | ||
1668 | if (nsp != osp | |
1669 | && (!char_ins_del_ok | |
502b9b64 | 1670 | || begmatch + endmatch <= char_ins_del_cost (frame)[nsp - osp])) |
4588ec20 JB |
1671 | { |
1672 | begmatch = 0; | |
1673 | endmatch = 0; | |
1674 | osp = nsp = min (osp, nsp); | |
1675 | } | |
1676 | ||
1677 | /* Now go through the line, inserting, writing and | |
1678 | deleting as appropriate. */ | |
1679 | ||
1680 | if (osp > nsp) | |
1681 | { | |
1682 | cursor_to (vpos, nsp); | |
1683 | delete_glyphs (osp - nsp); | |
1684 | } | |
1685 | else if (nsp > osp) | |
1686 | { | |
1687 | /* If going to delete chars later in line | |
1688 | and insert earlier in the line, | |
1689 | must delete first to avoid losing data in the insert */ | |
1690 | if (endmatch && nlen < olen + nsp - osp) | |
1691 | { | |
1692 | cursor_to (vpos, nlen - endmatch + osp - nsp); | |
1693 | delete_glyphs (olen + nsp - osp - nlen); | |
1694 | olen = nlen - (nsp - osp); | |
1695 | } | |
1696 | cursor_to (vpos, osp); | |
1697 | insert_glyphs ((char *)0, nsp - osp); | |
1698 | } | |
1699 | olen += nsp - osp; | |
1700 | ||
1701 | tem = nsp + begmatch + endmatch; | |
1702 | if (nlen != tem || olen != tem) | |
1703 | { | |
1704 | cursor_to (vpos, nsp + begmatch); | |
1705 | if (!endmatch || nlen == olen) | |
1706 | { | |
1707 | /* If new text being written reaches right margin, | |
1708 | there is no need to do clear-to-eol at the end. | |
1709 | (and it would not be safe, since cursor is not | |
1710 | going to be "at the margin" after the text is done) */ | |
502b9b64 | 1711 | if (nlen == FRAME_WIDTH (frame)) |
4588ec20 JB |
1712 | olen = 0; |
1713 | write_glyphs (nbody + nsp + begmatch, nlen - tem); | |
1714 | ||
1715 | #ifdef obsolete | |
1716 | ||
1717 | /* the following code loses disastrously if tem == nlen. | |
1718 | Rather than trying to fix that case, I am trying the simpler | |
1719 | solution found above. */ | |
1720 | ||
1721 | /* If the text reaches to the right margin, | |
1722 | it will lose one way or another (depending on AutoWrap) | |
1723 | to clear to end of line after outputting all the text. | |
1724 | So pause with one character to go and clear the line then. */ | |
502b9b64 | 1725 | if (nlen == FRAME_WIDTH (frame) && fast_clear_end_of_line && olen > nlen) |
4588ec20 JB |
1726 | { |
1727 | /* endmatch must be zero, and tem must equal nsp + begmatch */ | |
1728 | write_glyphs (nbody + tem, nlen - tem - 1); | |
1729 | clear_end_of_line (olen); | |
1730 | olen = 0; /* Don't let it be cleared again later */ | |
1731 | write_glyphs (nbody + nlen - 1, 1); | |
1732 | } | |
1733 | else | |
1734 | write_glyphs (nbody + nsp + begmatch, nlen - tem); | |
1735 | #endif /* OBSOLETE */ | |
1736 | ||
1737 | } | |
1738 | else if (nlen > olen) | |
1739 | { | |
1740 | write_glyphs (nbody + nsp + begmatch, olen - tem); | |
1741 | insert_glyphs (nbody + nsp + begmatch + olen - tem, nlen - olen); | |
1742 | olen = nlen; | |
1743 | } | |
1744 | else if (olen > nlen) | |
1745 | { | |
1746 | write_glyphs (nbody + nsp + begmatch, nlen - tem); | |
1747 | delete_glyphs (olen - nlen); | |
1748 | olen = nlen; | |
1749 | } | |
1750 | } | |
1751 | ||
1752 | just_erase: | |
1753 | /* If any unerased characters remain after the new line, erase them. */ | |
1754 | if (olen > nlen) | |
1755 | { | |
1756 | cursor_to (vpos, nlen); | |
1757 | clear_end_of_line (olen); | |
1758 | } | |
1759 | ||
502b9b64 JB |
1760 | /* Exchange contents between current_frame and new_frame. */ |
1761 | temp = desired_frame->glyphs[vpos]; | |
1762 | desired_frame->glyphs[vpos] = current_frame->glyphs[vpos]; | |
1763 | current_frame->glyphs[vpos] = temp; | |
60a8948a RS |
1764 | |
1765 | /* Exchange charstarts between current_frame and new_frame. */ | |
1766 | temp1 = desired_frame->charstarts[vpos]; | |
1767 | desired_frame->charstarts[vpos] = current_frame->charstarts[vpos]; | |
1768 | current_frame->charstarts[vpos] = temp1; | |
4588ec20 JB |
1769 | } |
1770 | \f | |
1771 | DEFUN ("open-termscript", Fopen_termscript, Sopen_termscript, | |
1772 | 1, 1, "FOpen termscript file: ", | |
1773 | "Start writing all terminal output to FILE as well as the terminal.\n\ | |
1774 | FILE = nil means just close any termscript file currently open.") | |
1775 | (file) | |
1776 | Lisp_Object file; | |
1777 | { | |
1778 | if (termscript != 0) fclose (termscript); | |
1779 | termscript = 0; | |
1780 | ||
efb859b4 | 1781 | if (! NILP (file)) |
4588ec20 JB |
1782 | { |
1783 | file = Fexpand_file_name (file, Qnil); | |
1784 | termscript = fopen (XSTRING (file)->data, "w"); | |
1785 | if (termscript == 0) | |
1786 | report_file_error ("Opening termscript", Fcons (file, Qnil)); | |
1787 | } | |
1788 | return Qnil; | |
1789 | } | |
1790 | \f | |
1791 | ||
1792 | #ifdef SIGWINCH | |
efb859b4 | 1793 | SIGTYPE |
4588ec20 JB |
1794 | window_change_signal () |
1795 | { | |
1796 | int width, height; | |
1797 | extern int errno; | |
1798 | int old_errno = errno; | |
1799 | ||
502b9b64 | 1800 | get_frame_size (&width, &height); |
4588ec20 | 1801 | |
502b9b64 JB |
1802 | /* The frame size change obviously applies to a termcap-controlled |
1803 | frame. Find such a frame in the list, and assume it's the only | |
4588ec20 | 1804 | one (since the redisplay code always writes to stdout, not a |
502b9b64 | 1805 | FILE * specified in the frame structure). Record the new size, |
4588ec20 JB |
1806 | but don't reallocate the data structures now. Let that be done |
1807 | later outside of the signal handler. */ | |
1808 | ||
1809 | { | |
35f56f96 | 1810 | Lisp_Object tail, frame; |
4588ec20 | 1811 | |
35f56f96 | 1812 | FOR_EACH_FRAME (tail, frame) |
4588ec20 | 1813 | { |
35f56f96 | 1814 | if (FRAME_TERMCAP_P (XFRAME (frame))) |
4588ec20 | 1815 | { |
35f56f96 | 1816 | change_frame_size (XFRAME (frame), height, width, 0, 1); |
4588ec20 JB |
1817 | break; |
1818 | } | |
1819 | } | |
1820 | } | |
1821 | ||
1822 | signal (SIGWINCH, window_change_signal); | |
1823 | errno = old_errno; | |
1824 | } | |
1825 | #endif /* SIGWINCH */ | |
1826 | ||
1827 | ||
502b9b64 | 1828 | /* Do any change in frame size that was requested by a signal. */ |
4588ec20 JB |
1829 | |
1830 | do_pending_window_change () | |
1831 | { | |
1832 | /* If window_change_signal should have run before, run it now. */ | |
1833 | while (delayed_size_change) | |
1834 | { | |
35f56f96 | 1835 | Lisp_Object tail, frame; |
4588ec20 JB |
1836 | |
1837 | delayed_size_change = 0; | |
1838 | ||
35f56f96 | 1839 | FOR_EACH_FRAME (tail, frame) |
4588ec20 | 1840 | { |
35f56f96 JB |
1841 | FRAME_PTR f = XFRAME (frame); |
1842 | ||
502b9b64 JB |
1843 | int height = FRAME_NEW_HEIGHT (f); |
1844 | int width = FRAME_NEW_WIDTH (f); | |
4588ec20 | 1845 | |
08f7aa3e | 1846 | if (height != 0 || width != 0) |
b6a65ac2 | 1847 | change_frame_size (f, height, width, 0, 0); |
4588ec20 JB |
1848 | } |
1849 | } | |
1850 | } | |
1851 | ||
1852 | ||
502b9b64 | 1853 | /* Change the frame height and/or width. Values may be given as zero to |
b6a65ac2 | 1854 | indicate no change is to take place. |
4588ec20 | 1855 | |
b6a65ac2 JB |
1856 | If DELAY is non-zero, then assume we're being called from a signal |
1857 | handler, and queue the change for later - perhaps the next | |
1858 | redisplay. Since this tries to resize windows, we can't call it | |
1859 | from a signal handler. */ | |
1860 | ||
1861 | change_frame_size (frame, newheight, newwidth, pretend, delay) | |
502b9b64 | 1862 | register FRAME_PTR frame; |
b6a65ac2 | 1863 | int newheight, newwidth, pretend; |
4588ec20 JB |
1864 | { |
1865 | /* If we can't deal with the change now, queue it for later. */ | |
b6a65ac2 | 1866 | if (delay) |
4588ec20 | 1867 | { |
b6a65ac2 | 1868 | FRAME_NEW_HEIGHT (frame) = newheight; |
502b9b64 | 1869 | FRAME_NEW_WIDTH (frame) = newwidth; |
4588ec20 JB |
1870 | delayed_size_change = 1; |
1871 | return; | |
1872 | } | |
1873 | ||
502b9b64 JB |
1874 | /* This size-change overrides any pending one for this frame. */ |
1875 | FRAME_NEW_HEIGHT (frame) = 0; | |
b6a65ac2 JB |
1876 | FRAME_NEW_WIDTH (frame) = 0; |
1877 | ||
08f7aa3e | 1878 | /* If an argument is zero, set it to the current value. */ |
b6a65ac2 JB |
1879 | newheight || (newheight = FRAME_HEIGHT (frame)); |
1880 | newwidth || (newwidth = FRAME_WIDTH (frame)); | |
4588ec20 | 1881 | |
b6a65ac2 JB |
1882 | /* Round up to the smallest acceptable size. */ |
1883 | check_frame_size (frame, &newheight, &newwidth); | |
1884 | ||
1885 | /* If we're not changing the frame size, quit now. */ | |
1886 | if (newheight == FRAME_HEIGHT (frame) | |
1887 | && newwidth == FRAME_WIDTH (frame)) | |
4588ec20 JB |
1888 | return; |
1889 | ||
b6a65ac2 | 1890 | if (newheight != FRAME_HEIGHT (frame)) |
4588ec20 | 1891 | { |
b6a65ac2 | 1892 | if (FRAME_HAS_MINIBUF_P (frame) |
502b9b64 | 1893 | && ! FRAME_MINIBUF_ONLY_P (frame)) |
4588ec20 | 1894 | { |
502b9b64 JB |
1895 | /* Frame has both root and minibuffer. */ |
1896 | set_window_height (FRAME_ROOT_WINDOW (frame), | |
cb470ab1 | 1897 | newheight - 1 - FRAME_MENU_BAR_LINES (frame), 0); |
502b9b64 | 1898 | XFASTINT (XWINDOW (FRAME_MINIBUF_WINDOW (frame))->top) |
b6a65ac2 | 1899 | = newheight - 1; |
502b9b64 | 1900 | set_window_height (FRAME_MINIBUF_WINDOW (frame), 1, 0); |
4588ec20 JB |
1901 | } |
1902 | else | |
502b9b64 | 1903 | /* Frame has just one top-level window. */ |
cb470ab1 RS |
1904 | set_window_height (FRAME_ROOT_WINDOW (frame), |
1905 | newheight - FRAME_MENU_BAR_LINES (frame), 0); | |
b6a65ac2 JB |
1906 | |
1907 | if (FRAME_TERMCAP_P (frame) && !pretend) | |
1908 | FrameRows = newheight; | |
4588ec20 JB |
1909 | |
1910 | #if 0 | |
502b9b64 | 1911 | if (frame->output_method == output_termcap) |
4588ec20 | 1912 | { |
b6a65ac2 | 1913 | frame_height = newheight; |
4588ec20 | 1914 | if (!pretend) |
b6a65ac2 | 1915 | FrameRows = newheight; |
4588ec20 JB |
1916 | } |
1917 | #endif | |
1918 | } | |
1919 | ||
b6a65ac2 | 1920 | if (newwidth != FRAME_WIDTH (frame)) |
4588ec20 | 1921 | { |
502b9b64 | 1922 | set_window_width (FRAME_ROOT_WINDOW (frame), newwidth, 0); |
b6a65ac2 | 1923 | if (FRAME_HAS_MINIBUF_P (frame)) |
502b9b64 | 1924 | set_window_width (FRAME_MINIBUF_WINDOW (frame), newwidth, 0); |
4588ec20 | 1925 | |
b6a65ac2 | 1926 | if (FRAME_TERMCAP_P (frame) && !pretend) |
502b9b64 | 1927 | FrameCols = newwidth; |
4588ec20 | 1928 | #if 0 |
502b9b64 | 1929 | if (frame->output_method == output_termcap) |
4588ec20 | 1930 | { |
502b9b64 | 1931 | frame_width = newwidth; |
4588ec20 | 1932 | if (!pretend) |
502b9b64 | 1933 | FrameCols = newwidth; |
4588ec20 JB |
1934 | } |
1935 | #endif | |
1936 | } | |
1937 | ||
b6a65ac2 JB |
1938 | FRAME_HEIGHT (frame) = newheight; |
1939 | FRAME_WIDTH (frame) = newwidth; | |
1940 | ||
502b9b64 JB |
1941 | remake_frame_glyphs (frame); |
1942 | calculate_costs (frame); | |
4588ec20 JB |
1943 | } |
1944 | \f | |
1945 | DEFUN ("send-string-to-terminal", Fsend_string_to_terminal, | |
1946 | Ssend_string_to_terminal, 1, 1, 0, | |
1947 | "Send STRING to the terminal without alteration.\n\ | |
1948 | Control characters in STRING will have terminal-dependent effects.") | |
1949 | (str) | |
1950 | Lisp_Object str; | |
1951 | { | |
1952 | CHECK_STRING (str, 0); | |
1953 | fwrite (XSTRING (str)->data, 1, XSTRING (str)->size, stdout); | |
1954 | fflush (stdout); | |
1955 | if (termscript) | |
1956 | { | |
1957 | fwrite (XSTRING (str)->data, 1, XSTRING (str)->size, termscript); | |
1958 | fflush (termscript); | |
1959 | } | |
1960 | return Qnil; | |
1961 | } | |
1962 | ||
1963 | DEFUN ("ding", Fding, Sding, 0, 1, 0, | |
1964 | "Beep, or flash the screen.\n\ | |
1965 | Also, unless an argument is given,\n\ | |
1966 | terminate any keyboard macro currently executing.") | |
1967 | (arg) | |
1968 | Lisp_Object arg; | |
1969 | { | |
efb859b4 | 1970 | if (!NILP (arg)) |
4588ec20 | 1971 | { |
7fa788da RS |
1972 | if (noninteractive) |
1973 | putchar (07); | |
1974 | else | |
1975 | ring_bell (); | |
4588ec20 JB |
1976 | fflush (stdout); |
1977 | } | |
1978 | else | |
1979 | bitch_at_user (); | |
1980 | ||
1981 | return Qnil; | |
1982 | } | |
1983 | ||
1984 | bitch_at_user () | |
1985 | { | |
1986 | if (noninteractive) | |
1987 | putchar (07); | |
1988 | else if (!INTERACTIVE) /* Stop executing a keyboard macro. */ | |
1989 | error ("Keyboard macro terminated by a command ringing the bell"); | |
1990 | else | |
1991 | ring_bell (); | |
1992 | fflush (stdout); | |
1993 | } | |
1994 | ||
1995 | DEFUN ("sleep-for", Fsleep_for, Ssleep_for, 1, 2, 0, | |
767229f8 | 1996 | "Pause, without updating display, for SECONDS seconds.\n\ |
b07646f5 JB |
1997 | SECONDS may be a floating-point value, meaning that you can wait for a\n\ |
1998 | fraction of a second. Optional second arg MILLISECONDS specifies an\n\ | |
1999 | additional wait period, in milliseconds; this may be useful if your\n\ | |
2000 | Emacs was built without floating point support.\n\ | |
2001 | \(Not all operating systems support waiting for a fraction of a second.)") | |
767229f8 JB |
2002 | (seconds, milliseconds) |
2003 | Lisp_Object seconds, milliseconds; | |
4588ec20 | 2004 | { |
767229f8 | 2005 | int sec, usec; |
4588ec20 | 2006 | |
767229f8 JB |
2007 | if (NILP (milliseconds)) |
2008 | XSET (milliseconds, Lisp_Int, 0); | |
2009 | else | |
2010 | CHECK_NUMBER (milliseconds, 1); | |
b07646f5 JB |
2011 | usec = XINT (milliseconds) * 1000; |
2012 | ||
2013 | #ifdef LISP_FLOAT_TYPE | |
2014 | { | |
2015 | double duration = extract_float (seconds); | |
2016 | sec = (int) duration; | |
2017 | usec += (duration - sec) * 1000000; | |
2018 | } | |
2019 | #else | |
2020 | CHECK_NUMBER (seconds, 0); | |
2021 | sec = XINT (seconds); | |
2022 | #endif | |
4588ec20 | 2023 | |
a41f8bed | 2024 | #ifndef EMACS_HAS_USECS |
767229f8 JB |
2025 | if (sec == 0 && usec != 0) |
2026 | error ("millisecond `sleep-for' not supported on %s", SYSTEM_TYPE); | |
4588ec20 | 2027 | #endif |
767229f8 JB |
2028 | |
2029 | /* Assure that 0 <= usec < 1000000. */ | |
2030 | if (usec < 0) | |
2031 | { | |
2032 | /* We can't rely on the rounding being correct if user is negative. */ | |
2033 | if (-1000000 < usec) | |
2034 | sec--, usec += 1000000; | |
2035 | else | |
2036 | sec -= -usec / 1000000, usec = 1000000 - (-usec % 1000000); | |
4588ec20 | 2037 | } |
767229f8 JB |
2038 | else |
2039 | sec += usec / 1000000, usec %= 1000000; | |
2040 | ||
5c48f0da | 2041 | if (sec <= 0) |
767229f8 | 2042 | return Qnil; |
4588ec20 | 2043 | |
f76475ad JB |
2044 | { |
2045 | Lisp_Object zero; | |
2046 | ||
2047 | XFASTINT (zero) = 0; | |
2048 | wait_reading_process_input (sec, usec, zero, 0); | |
2049 | } | |
d1af74e9 | 2050 | |
767229f8 JB |
2051 | /* We should always have wait_reading_process_input; we have a dummy |
2052 | implementation for systems which don't support subprocesses. */ | |
2053 | #if 0 | |
2054 | /* No wait_reading_process_input */ | |
4588ec20 JB |
2055 | immediate_quit = 1; |
2056 | QUIT; | |
2057 | ||
2058 | #ifdef VMS | |
2059 | sys_sleep (sec); | |
2060 | #else /* not VMS */ | |
2061 | /* The reason this is done this way | |
2062 | (rather than defined (H_S) && defined (H_T)) | |
2063 | is because the VMS preprocessor doesn't grok `defined' */ | |
2064 | #ifdef HAVE_SELECT | |
a41f8bed JB |
2065 | EMACS_GET_TIME (end_time); |
2066 | EMACS_SET_SECS_USECS (timeout, sec, usec); | |
d1af74e9 | 2067 | EMACS_ADD_TIME (end_time, end_time, timeout); |
a41f8bed | 2068 | |
4588ec20 JB |
2069 | while (1) |
2070 | { | |
a41f8bed JB |
2071 | EMACS_GET_TIME (timeout); |
2072 | EMACS_SUB_TIME (timeout, end_time, timeout); | |
2073 | if (EMACS_TIME_NEG_P (timeout) | |
2074 | || !select (1, 0, 0, 0, &timeout)) | |
4588ec20 JB |
2075 | break; |
2076 | } | |
4588ec20 JB |
2077 | #else /* not HAVE_SELECT */ |
2078 | sleep (sec); | |
2079 | #endif /* HAVE_SELECT */ | |
2080 | #endif /* not VMS */ | |
2081 | ||
2082 | immediate_quit = 0; | |
2083 | #endif /* no subprocesses */ | |
2084 | ||
2085 | return Qnil; | |
2086 | } | |
2087 | ||
f76475ad JB |
2088 | /* This is just like wait_reading_process_input, except that |
2089 | it does the redisplay. | |
2090 | ||
ea0d86af RS |
2091 | It's also much like Fsit_for, except that it can be used for |
2092 | waiting for input as well. One differnce is that sit_for | |
2093 | does not call prepare_menu_bars; Fsit_for does call that. */ | |
4588ec20 | 2094 | |
f76475ad JB |
2095 | Lisp_Object |
2096 | sit_for (sec, usec, reading, display) | |
2097 | int sec, usec, reading, display; | |
2098 | { | |
2099 | Lisp_Object read_kbd; | |
4588ec20 JB |
2100 | |
2101 | if (detect_input_pending ()) | |
2102 | return Qnil; | |
4588ec20 | 2103 | |
f76475ad JB |
2104 | if (display) |
2105 | redisplay_preserve_echo_area (); | |
4588ec20 | 2106 | |
dfdb645c JB |
2107 | if (sec == 0 && usec == 0) |
2108 | return Qt; | |
2109 | ||
4588ec20 | 2110 | #ifdef SIGIO |
8fc798e9 | 2111 | gobble_input (0); |
f76475ad JB |
2112 | #endif |
2113 | ||
2114 | XSET (read_kbd, Lisp_Int, reading ? -1 : 1); | |
2115 | wait_reading_process_input (sec, usec, read_kbd, display); | |
2116 | ||
d1af74e9 | 2117 | |
500ab754 JB |
2118 | /* wait_reading_process_input should always be available now; it is |
2119 | simulated in a simple way on systems that don't support | |
2120 | subprocesses. */ | |
2121 | #if 0 | |
2122 | /* No wait_reading_process_input available. */ | |
4588ec20 JB |
2123 | immediate_quit = 1; |
2124 | QUIT; | |
2125 | ||
2126 | waitchannels = 1; | |
2127 | #ifdef VMS | |
f76475ad | 2128 | input_wait_timeout (XINT (arg)); |
4588ec20 | 2129 | #else /* not VMS */ |
d1af74e9 JB |
2130 | #ifndef HAVE_TIMEVAL |
2131 | timeout_sec = sec; | |
2132 | select (1, &waitchannels, 0, 0, &timeout_sec); | |
2133 | #else /* HAVE_TIMEVAL */ | |
2134 | timeout.tv_sec = sec; | |
2135 | timeout.tv_usec = usec; | |
4588ec20 | 2136 | select (1, &waitchannels, 0, 0, &timeout); |
d1af74e9 | 2137 | #endif /* HAVE_TIMEVAL */ |
4588ec20 JB |
2138 | #endif /* not VMS */ |
2139 | ||
2140 | immediate_quit = 0; | |
d1af74e9 | 2141 | #endif |
4588ec20 JB |
2142 | |
2143 | return detect_input_pending () ? Qnil : Qt; | |
2144 | } | |
2145 | ||
f76475ad | 2146 | DEFUN ("sit-for", Fsit_for, Ssit_for, 1, 3, 0, |
767229f8 | 2147 | "Perform redisplay, then wait for SECONDS seconds or until input is available.\n\ |
b07646f5 JB |
2148 | SECONDS may be a floating-point value, meaning that you can wait for a\n\ |
2149 | fraction of a second. Optional second arg MILLISECONDS specifies an\n\ | |
2150 | additional wait period, in milliseconds; this may be useful if your\n\ | |
2151 | Emacs was built without floating point support.\n\ | |
2152 | \(Not all operating systems support waiting for a fraction of a second.)\n\ | |
f76475ad JB |
2153 | Optional third arg non-nil means don't redisplay, just wait for input.\n\ |
2154 | Redisplay is preempted as always if input arrives, and does not happen\n\ | |
2155 | if input is available before it starts.\n\ | |
2156 | Value is t if waited the full time with no input arriving.") | |
767229f8 JB |
2157 | (seconds, milliseconds, nodisp) |
2158 | Lisp_Object seconds, milliseconds, nodisp; | |
f76475ad | 2159 | { |
767229f8 | 2160 | int sec, usec; |
f76475ad | 2161 | |
767229f8 JB |
2162 | if (NILP (milliseconds)) |
2163 | XSET (milliseconds, Lisp_Int, 0); | |
2164 | else | |
2165 | CHECK_NUMBER (milliseconds, 1); | |
b07646f5 JB |
2166 | usec = XINT (milliseconds) * 1000; |
2167 | ||
2168 | #ifdef LISP_FLOAT_TYPE | |
2169 | { | |
2170 | double duration = extract_float (seconds); | |
2171 | sec = (int) duration; | |
2172 | usec += (duration - sec) * 1000000; | |
2173 | } | |
2174 | #else | |
2175 | CHECK_NUMBER (seconds, 0); | |
2176 | sec = XINT (seconds); | |
2177 | #endif | |
f76475ad | 2178 | |
f76475ad | 2179 | #ifndef EMACS_HAS_USECS |
767229f8 JB |
2180 | if (usec != 0 && sec == 0) |
2181 | error ("millisecond `sit-for' not supported on %s", SYSTEM_TYPE); | |
f76475ad | 2182 | #endif |
f76475ad | 2183 | |
ea0d86af RS |
2184 | if (NILP (nodisp)) |
2185 | prepare_menu_bars (); | |
f76475ad JB |
2186 | return sit_for (sec, usec, 0, NILP (nodisp)); |
2187 | } | |
4588ec20 JB |
2188 | \f |
2189 | char *terminal_type; | |
2190 | ||
2191 | /* Initialization done when Emacs fork is started, before doing stty. */ | |
2192 | /* Determine terminal type and set terminal_driver */ | |
2193 | /* Then invoke its decoding routine to set up variables | |
2194 | in the terminal package */ | |
2195 | ||
2196 | init_display () | |
2197 | { | |
2198 | #ifdef HAVE_X_WINDOWS | |
2199 | extern int display_arg; | |
2200 | #endif | |
2201 | ||
2202 | meta_key = 0; | |
2203 | inverse_video = 0; | |
2204 | cursor_in_echo_area = 0; | |
2205 | terminal_type = (char *) 0; | |
2206 | ||
1315c181 JB |
2207 | /* Now is the time to initialize this; it's used by init_sys_modes |
2208 | during startup. */ | |
2209 | Vwindow_system = Qnil; | |
4588ec20 | 2210 | |
1315c181 JB |
2211 | /* If the user wants to use a window system, we shouldn't bother |
2212 | initializing the terminal. This is especially important when the | |
2213 | terminal is so dumb that emacs gives up before and doesn't bother | |
2214 | using the window system. | |
4588ec20 | 2215 | |
1315c181 JB |
2216 | If the DISPLAY environment variable is set, try to use X, and die |
2217 | with an error message if that doesn't work. */ | |
4588ec20 JB |
2218 | |
2219 | #ifdef HAVE_X_WINDOWS | |
d460af17 JB |
2220 | if (! display_arg) |
2221 | { | |
2222 | #ifdef VMS | |
5de9f849 | 2223 | display_arg = (getenv ("DECW$DISPLAY") != 0); |
d460af17 | 2224 | #else |
5de9f849 | 2225 | display_arg = (getenv ("DISPLAY") != 0); |
d460af17 | 2226 | #endif |
f040093a | 2227 | } |
d460af17 JB |
2228 | |
2229 | if (!inhibit_window_system && display_arg) | |
4588ec20 JB |
2230 | { |
2231 | Vwindow_system = intern ("x"); | |
2232 | #ifdef HAVE_X11 | |
2233 | Vwindow_system_version = make_number (11); | |
2234 | #else | |
2235 | Vwindow_system_version = make_number (10); | |
2236 | #endif | |
2237 | return; | |
2238 | } | |
2239 | #endif /* HAVE_X_WINDOWS */ | |
2240 | ||
2241 | /* If no window system has been specified, try to use the terminal. */ | |
2242 | if (! isatty (0)) | |
2243 | { | |
2244 | fprintf (stderr, "emacs: standard input is not a tty\n"); | |
2245 | exit (1); | |
2246 | } | |
2247 | ||
2248 | /* Look at the TERM variable */ | |
2249 | terminal_type = (char *) getenv ("TERM"); | |
2250 | if (!terminal_type) | |
2251 | { | |
2252 | #ifdef VMS | |
2253 | fprintf (stderr, "Please specify your terminal type.\n\ | |
2254 | For types defined in VMS, use set term /device=TYPE.\n\ | |
2255 | For types not defined in VMS, use define emacs_term \"TYPE\".\n\ | |
2256 | \(The quotation marks are necessary since terminal types are lower case.)\n"); | |
2257 | #else | |
2258 | fprintf (stderr, "Please set the environment variable TERM; see tset(1).\n"); | |
2259 | #endif | |
2260 | exit (1); | |
2261 | } | |
2262 | ||
2263 | #ifdef VMS | |
2264 | /* VMS DCL tends to upcase things, so downcase term type. | |
2265 | Hardly any uppercase letters in terminal types; should be none. */ | |
2266 | { | |
2267 | char *new = (char *) xmalloc (strlen (terminal_type) + 1); | |
2268 | char *p; | |
2269 | ||
2270 | strcpy (new, terminal_type); | |
2271 | ||
2272 | for (p = new; *p; p++) | |
2273 | if (isupper (*p)) | |
2274 | *p = tolower (*p); | |
2275 | ||
2276 | terminal_type = new; | |
2277 | } | |
2278 | #endif | |
2279 | ||
2280 | term_init (terminal_type); | |
2281 | ||
502b9b64 JB |
2282 | remake_frame_glyphs (selected_frame); |
2283 | calculate_costs (selected_frame); | |
4588ec20 JB |
2284 | |
2285 | /* X and Y coordinates of the cursor between updates. */ | |
502b9b64 JB |
2286 | FRAME_CURSOR_X (selected_frame) = 0; |
2287 | FRAME_CURSOR_Y (selected_frame) = 0; | |
4588ec20 JB |
2288 | |
2289 | #ifdef SIGWINCH | |
2290 | #ifndef CANNOT_DUMP | |
2291 | if (initialized) | |
2292 | #endif /* CANNOT_DUMP */ | |
2293 | signal (SIGWINCH, window_change_signal); | |
2294 | #endif /* SIGWINCH */ | |
2295 | } | |
2296 | \f | |
2297 | syms_of_display () | |
2298 | { | |
502b9b64 JB |
2299 | #ifdef MULTI_FRAME |
2300 | defsubr (&Sredraw_frame); | |
4588ec20 JB |
2301 | #endif |
2302 | defsubr (&Sredraw_display); | |
2303 | defsubr (&Sopen_termscript); | |
2304 | defsubr (&Sding); | |
2305 | defsubr (&Ssit_for); | |
2306 | defsubr (&Ssleep_for); | |
2307 | defsubr (&Ssend_string_to_terminal); | |
2308 | ||
2309 | DEFVAR_INT ("baud-rate", &baud_rate, | |
2310 | "The output baud rate of the terminal.\n\ | |
2311 | On most systems, changing this value will affect the amount of padding\n\ | |
2312 | and the other strategic decisions made during redisplay."); | |
2313 | DEFVAR_BOOL ("inverse-video", &inverse_video, | |
502b9b64 | 2314 | "*Non-nil means invert the entire frame display.\n\ |
4588ec20 JB |
2315 | This means everything is in inverse video which otherwise would not be."); |
2316 | DEFVAR_BOOL ("visible-bell", &visible_bell, | |
502b9b64 | 2317 | "*Non-nil means try to flash the frame to represent a bell."); |
4588ec20 | 2318 | DEFVAR_BOOL ("no-redraw-on-reenter", &no_redraw_on_reenter, |
502b9b64 | 2319 | "*Non-nil means no need to redraw entire frame after suspending.\n\ |
4588ec20 | 2320 | A non-nil value is useful if the terminal can automatically preserve\n\ |
502b9b64 | 2321 | Emacs's frame display when you reenter Emacs.\n\ |
4588ec20 JB |
2322 | It is up to you to set this variable if your terminal can do that."); |
2323 | DEFVAR_LISP ("window-system", &Vwindow_system, | |
2324 | "A symbol naming the window-system under which Emacs is running\n\ | |
2325 | \(such as `x'), or nil if emacs is running on an ordinary terminal."); | |
2326 | DEFVAR_LISP ("window-system-version", &Vwindow_system_version, | |
2327 | "The version number of the window system in use.\n\ | |
2328 | For X windows, this is 10 or 11."); | |
2329 | DEFVAR_BOOL ("cursor-in-echo-area", &cursor_in_echo_area, | |
2330 | "Non-nil means put cursor in minibuffer, at end of any message there."); | |
2331 | DEFVAR_LISP ("glyph-table", &Vglyph_table, | |
502b9b64 | 2332 | "Table defining how to output a glyph code to the frame.\n\ |
4588ec20 JB |
2333 | If not nil, this is a vector indexed by glyph code to define the glyph.\n\ |
2334 | Each element can be:\n\ | |
2335 | integer: a glyph code which this glyph is an alias for.\n\ | |
2336 | string: output this glyph using that string (not impl. in X windows).\n\ | |
2337 | nil: this glyph mod 256 is char code to output,\n\ | |
2338 | and this glyph / 256 is face code for X windows (see `x-set-face')."); | |
2339 | Vglyph_table = Qnil; | |
2340 | ||
2341 | DEFVAR_LISP ("standard-display-table", &Vstandard_display_table, | |
2342 | "Display table to use for buffers that specify none.\n\ | |
2343 | See `buffer-display-table' for more information."); | |
2344 | Vstandard_display_table = Qnil; | |
2345 | ||
2346 | /* Initialize `window-system', unless init_display already decided it. */ | |
2347 | #ifdef CANNOT_DUMP | |
2348 | if (noninteractive) | |
2349 | #endif | |
2350 | { | |
2351 | Vwindow_system = Qnil; | |
2352 | Vwindow_system_version = Qnil; | |
2353 | } | |
2354 | } |