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