Commit | Line | Data |
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a2889657 | 1 | /* Display generation from window structure and buffer text. |
5992c4f7 | 2 | Copyright (C) 1985, 86, 87, 88, 93, 94, 95 Free Software Foundation, Inc. |
a2889657 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 | |
b1d1124b | 8 | the Free Software Foundation; either version 2, or (at your option) |
a2889657 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
a2889657 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
a2889657 JB |
23 | #include <stdio.h> |
24 | /*#include <ctype.h>*/ | |
25 | #undef NULL | |
26 | #include "lisp.h" | |
44fa5b1e | 27 | #include "frame.h" |
a2889657 JB |
28 | #include "window.h" |
29 | #include "termchar.h" | |
30 | #include "dispextern.h" | |
31 | #include "buffer.h" | |
1c9241f5 | 32 | #include "charset.h" |
a2889657 JB |
33 | #include "indent.h" |
34 | #include "commands.h" | |
35 | #include "macros.h" | |
36 | #include "disptab.h" | |
30c566e4 | 37 | #include "termhooks.h" |
b0a0fbda | 38 | #include "intervals.h" |
fe8b0cf8 | 39 | #include "keyboard.h" |
1c9241f5 KH |
40 | #include "coding.h" |
41 | #include "process.h" | |
a2889657 | 42 | |
8f3343d0 | 43 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
76412d64 | 44 | extern void set_frame_menubar (); |
cd6dfed6 | 45 | extern int pending_menu_activation; |
76412d64 RS |
46 | #endif |
47 | ||
a2889657 JB |
48 | extern int interrupt_input; |
49 | extern int command_loop_level; | |
50 | ||
b6436d4e RS |
51 | extern int minibuffer_auto_raise; |
52 | ||
c4628384 RS |
53 | extern Lisp_Object Qface; |
54 | ||
399164b4 KH |
55 | extern Lisp_Object Voverriding_local_map; |
56 | extern Lisp_Object Voverriding_local_map_menu_flag; | |
57 | ||
d46fb96a | 58 | Lisp_Object Qoverriding_local_map, Qoverriding_terminal_local_map; |
75c43375 | 59 | Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
e0bfbde6 | 60 | Lisp_Object Qredisplay_end_trigger_functions; |
399164b4 | 61 | |
f88eb0b6 | 62 | /* Nonzero means print newline to stdout before next minibuffer message. */ |
a2889657 JB |
63 | |
64 | int noninteractive_need_newline; | |
65 | ||
f88eb0b6 KH |
66 | /* Nonzero means print newline to message log before next message. */ |
67 | ||
3c6595e0 | 68 | static int message_log_need_newline; |
f88eb0b6 | 69 | |
a2889657 JB |
70 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
71 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
210e752f KH |
72 | #define minmax(floor, val, ceil) \ |
73 | ((val) < (floor) ? (floor) : (val) > (ceil) ? (ceil) : (val)) | |
a2889657 JB |
74 | |
75 | /* The buffer position of the first character appearing | |
44fa5b1e JB |
76 | entirely or partially on the current frame line. |
77 | Or zero, which disables the optimization for the current frame line. */ | |
a2889657 JB |
78 | static int this_line_bufpos; |
79 | ||
80 | /* Number of characters past the end of this line, | |
81 | including the terminating newline */ | |
82 | static int this_line_endpos; | |
83 | ||
44fa5b1e | 84 | /* The vertical position of this frame line. */ |
a2889657 JB |
85 | static int this_line_vpos; |
86 | ||
44fa5b1e | 87 | /* Hpos value for start of display on this frame line. |
a2889657 JB |
88 | Usually zero, but negative if first character really began |
89 | on previous line */ | |
90 | static int this_line_start_hpos; | |
91 | ||
92 | /* Buffer that this_line variables are describing. */ | |
93 | static struct buffer *this_line_buffer; | |
94 | ||
a2889657 | 95 | /* Value of echo_area_glyphs when it was last acted on. |
44fa5b1e | 96 | If this is nonzero, there is a message on the frame |
a2889657 JB |
97 | in the minibuffer and it should be erased as soon |
98 | as it is no longer requested to appear. */ | |
99 | char *previous_echo_glyphs; | |
100 | ||
44fa5b1e | 101 | /* Nonzero means truncate lines in all windows less wide than the frame */ |
a2889657 JB |
102 | int truncate_partial_width_windows; |
103 | ||
d39b6696 KH |
104 | /* Nonzero means we have more than one non-minibuffer-only frame. |
105 | Not guaranteed to be accurate except while parsing frame-title-format. */ | |
106 | int multiple_frames; | |
107 | ||
a2889657 JB |
108 | Lisp_Object Vglobal_mode_string; |
109 | ||
110 | /* Marker for where to display an arrow on top of the buffer text. */ | |
111 | Lisp_Object Voverlay_arrow_position; | |
112 | ||
113 | /* String to display for the arrow. */ | |
114 | Lisp_Object Voverlay_arrow_string; | |
115 | ||
d39b6696 KH |
116 | /* Like mode-line-format, but for the titlebar on a visible frame. */ |
117 | Lisp_Object Vframe_title_format; | |
118 | ||
119 | /* Like mode-line-format, but for the titlebar on an iconified frame. */ | |
120 | Lisp_Object Vicon_title_format; | |
121 | ||
08b610e4 RS |
122 | /* List of functions to call when a window's size changes. These |
123 | functions get one arg, a frame on which one or more windows' sizes | |
124 | have changed. */ | |
125 | static Lisp_Object Vwindow_size_change_functions; | |
126 | ||
a2889657 | 127 | /* Values of those variables at last redisplay. */ |
ded34426 | 128 | static Lisp_Object last_arrow_position, last_arrow_string; |
a2889657 | 129 | |
cf074754 RS |
130 | Lisp_Object Qmenu_bar_update_hook; |
131 | ||
a2889657 JB |
132 | /* Nonzero if overlay arrow has been displayed once in this window. */ |
133 | static int overlay_arrow_seen; | |
134 | ||
ca26e1c8 KH |
135 | /* Nonzero if visible end of buffer has already been displayed once |
136 | in this window. (We need this variable in case there are overlay | |
137 | strings that get displayed there.) */ | |
138 | static int zv_strings_seen; | |
139 | ||
fba9ce76 RS |
140 | /* Nonzero means highlight the region even in nonselected windows. */ |
141 | static int highlight_nonselected_windows; | |
142 | ||
44fa5b1e | 143 | /* If cursor motion alone moves point off frame, |
a2889657 | 144 | Try scrolling this many lines up or down if that will bring it back. */ |
14510fee | 145 | static int scroll_step; |
a2889657 | 146 | |
0789adb2 RS |
147 | /* Non-0 means scroll just far enough to bring point back on the screen, |
148 | when appropriate. */ | |
149 | static int scroll_conservatively; | |
150 | ||
9afd2168 RS |
151 | /* Recenter the window whenever point gets within this many lines |
152 | of the top or bottom of the window. */ | |
153 | int scroll_margin; | |
154 | ||
a2889657 JB |
155 | /* Nonzero if try_window_id has made blank lines at window bottom |
156 | since the last redisplay that paused */ | |
157 | static int blank_end_of_window; | |
158 | ||
42640f83 RS |
159 | /* Number of windows showing the buffer of the selected window |
160 | (or another buffer with the same base buffer). | |
a2889657 JB |
161 | keyboard.c refers to this. */ |
162 | int buffer_shared; | |
163 | ||
44fa5b1e | 164 | /* display_text_line sets these to the frame position (origin 0) of point, |
a2889657 JB |
165 | whether the window is selected or not. |
166 | Set one to -1 first to determine whether point was found afterwards. */ | |
167 | ||
168 | static int cursor_vpos; | |
169 | static int cursor_hpos; | |
170 | ||
14510fee | 171 | static int debug_end_pos; |
a2889657 JB |
172 | |
173 | /* Nonzero means display mode line highlighted */ | |
174 | int mode_line_inverse_video; | |
175 | ||
e9874cee | 176 | static void redisplay_internal (); |
ff6c30e5 | 177 | static int message_log_check_duplicate (); |
a2889657 JB |
178 | static void echo_area_display (); |
179 | void mark_window_display_accurate (); | |
180 | static void redisplay_windows (); | |
181 | static void redisplay_window (); | |
90adcf20 | 182 | static void update_menu_bar (); |
a2889657 JB |
183 | static void try_window (); |
184 | static int try_window_id (); | |
185 | static struct position *display_text_line (); | |
186 | static void display_mode_line (); | |
187 | static int display_mode_element (); | |
a2889657 JB |
188 | static char *decode_mode_spec (); |
189 | static int display_string (); | |
7ce2c095 | 190 | static void display_menu_bar (); |
aa6d10fa | 191 | static int display_count_lines (); |
a2889657 JB |
192 | |
193 | /* Prompt to display in front of the minibuffer contents */ | |
8c5b6a0a | 194 | Lisp_Object minibuf_prompt; |
a2889657 JB |
195 | |
196 | /* Width in columns of current minibuffer prompt. */ | |
197 | int minibuf_prompt_width; | |
198 | ||
199 | /* Message to display instead of minibuffer contents | |
200 | This is what the functions error and message make, | |
201 | and command echoing uses it as well. | |
202 | It overrides the minibuf_prompt as well as the buffer. */ | |
203 | char *echo_area_glyphs; | |
204 | ||
90adcf20 RS |
205 | /* This is the length of the message in echo_area_glyphs. */ |
206 | int echo_area_glyphs_length; | |
207 | ||
73af359d RS |
208 | /* This is the window where the echo area message was displayed. |
209 | It is always a minibuffer window, but it may not be the | |
210 | same window currently active as a minibuffer. */ | |
211 | Lisp_Object echo_area_window; | |
212 | ||
a2889657 JB |
213 | /* true iff we should redraw the mode lines on the next redisplay */ |
214 | int update_mode_lines; | |
215 | ||
216 | /* Smallest number of characters before the gap | |
217 | at any time since last redisplay that finished. | |
218 | Valid for current buffer when try_window_id can be called. */ | |
219 | int beg_unchanged; | |
220 | ||
221 | /* Smallest number of characters after the gap | |
222 | at any time since last redisplay that finished. | |
223 | Valid for current buffer when try_window_id can be called. */ | |
224 | int end_unchanged; | |
225 | ||
226 | /* MODIFF as of last redisplay that finished; | |
8850a573 RS |
227 | if it matches MODIFF, and overlay_unchanged_modified |
228 | matches OVERLAY_MODIFF, that means beg_unchanged and end_unchanged | |
a2889657 JB |
229 | contain no useful information */ |
230 | int unchanged_modified; | |
231 | ||
8850a573 RS |
232 | /* OVERLAY_MODIFF as of last redisplay that finished. */ |
233 | int overlay_unchanged_modified; | |
234 | ||
a2889657 JB |
235 | /* Nonzero if window sizes or contents have changed |
236 | since last redisplay that finished */ | |
237 | int windows_or_buffers_changed; | |
238 | ||
aa6d10fa RS |
239 | /* Nonzero after display_mode_line if %l was used |
240 | and it displayed a line number. */ | |
241 | int line_number_displayed; | |
242 | ||
243 | /* Maximum buffer size for which to display line numbers. */ | |
14510fee | 244 | static int line_number_display_limit; |
5992c4f7 KH |
245 | |
246 | /* Number of lines to keep in the message log buffer. | |
247 | t means infinite. nil means don't log at all. */ | |
248 | Lisp_Object Vmessage_log_max; | |
a2889657 | 249 | \f |
1adc55de RS |
250 | /* Output a newline in the *Messages* buffer if "needs" one. */ |
251 | ||
3c6595e0 KH |
252 | void |
253 | message_log_maybe_newline () | |
254 | { | |
255 | if (message_log_need_newline) | |
256 | message_dolog ("", 0, 1); | |
257 | } | |
258 | ||
259 | ||
d917be71 KH |
260 | /* Add a string to the message log, optionally terminated with a newline. |
261 | This function calls low-level routines in order to bypass text property | |
262 | hooks, etc. which might not be safe to run. */ | |
90adcf20 RS |
263 | |
264 | void | |
f88eb0b6 | 265 | message_dolog (m, len, nlflag) |
90adcf20 | 266 | char *m; |
f88eb0b6 | 267 | int len, nlflag; |
5992c4f7 | 268 | { |
f88eb0b6 | 269 | if (!NILP (Vmessage_log_max)) |
5992c4f7 KH |
270 | { |
271 | struct buffer *oldbuf; | |
272 | int oldpoint, oldbegv, oldzv; | |
69f033ab | 273 | int old_windows_or_buffers_changed = windows_or_buffers_changed; |
5992c4f7 KH |
274 | |
275 | oldbuf = current_buffer; | |
3c6595e0 | 276 | Fset_buffer (Fget_buffer_create (build_string ("*Messages*"))); |
16c300fb | 277 | current_buffer->undo_list = Qt; |
5992c4f7 KH |
278 | oldpoint = PT; |
279 | oldbegv = BEGV; | |
280 | oldzv = ZV; | |
d917be71 KH |
281 | BEGV = BEG; |
282 | ZV = Z; | |
5992c4f7 | 283 | if (oldpoint == Z) |
f88eb0b6 | 284 | oldpoint += len + nlflag; |
5992c4f7 | 285 | if (oldzv == Z) |
f88eb0b6 | 286 | oldzv += len + nlflag; |
5992c4f7 | 287 | TEMP_SET_PT (Z); |
f88eb0b6 KH |
288 | if (len) |
289 | insert_1 (m, len, 1, 0); | |
290 | if (nlflag) | |
5992c4f7 | 291 | { |
ff6c30e5 KH |
292 | int this_bol, prev_bol, dup; |
293 | insert_1 ("\n", 1, 1, 0); | |
294 | ||
295 | this_bol = scan_buffer ('\n', Z, 0, -2, 0, 0); | |
296 | if (this_bol > BEG) | |
297 | { | |
298 | prev_bol = scan_buffer ('\n', this_bol, 0, -2, 0, 0); | |
299 | dup = message_log_check_duplicate (prev_bol, this_bol); | |
300 | if (dup) | |
301 | { | |
302 | if (oldpoint > prev_bol) | |
303 | oldpoint -= min (this_bol, oldpoint) - prev_bol; | |
304 | if (oldbegv > prev_bol) | |
305 | oldbegv -= min (this_bol, oldbegv) - prev_bol; | |
306 | if (oldzv > prev_bol) | |
307 | oldzv -= min (this_bol, oldzv) - prev_bol; | |
308 | del_range_1 (prev_bol, this_bol, 0); | |
309 | if (dup > 1) | |
310 | { | |
311 | char dupstr[40]; | |
312 | int duplen; | |
313 | ||
314 | /* If you change this format, don't forget to also | |
315 | change message_log_check_duplicate. */ | |
316 | sprintf (dupstr, " [%d times]", dup); | |
317 | duplen = strlen (dupstr); | |
318 | TEMP_SET_PT (Z-1); | |
319 | if (oldpoint == Z) | |
320 | oldpoint += duplen; | |
321 | if (oldzv == Z) | |
322 | oldzv += duplen; | |
323 | insert_1 (dupstr, duplen, 1, 0); | |
324 | } | |
325 | } | |
326 | } | |
327 | ||
328 | if (NATNUMP (Vmessage_log_max)) | |
329 | { | |
330 | int pos = scan_buffer ('\n', Z, 0, | |
331 | -XFASTINT (Vmessage_log_max) - 1, 0, 0); | |
332 | oldpoint -= min (pos, oldpoint) - BEG; | |
333 | oldbegv -= min (pos, oldbegv) - BEG; | |
334 | oldzv -= min (pos, oldzv) - BEG; | |
335 | del_range_1 (BEG, pos, 0); | |
336 | } | |
5992c4f7 KH |
337 | } |
338 | BEGV = oldbegv; | |
339 | ZV = oldzv; | |
340 | TEMP_SET_PT (oldpoint); | |
341 | set_buffer_internal (oldbuf); | |
69f033ab | 342 | windows_or_buffers_changed = old_windows_or_buffers_changed; |
3c6595e0 | 343 | message_log_need_newline = !nlflag; |
5992c4f7 | 344 | } |
f88eb0b6 KH |
345 | } |
346 | ||
ff6c30e5 KH |
347 | /* We are at the end of the buffer after just having inserted a newline. |
348 | (Note: We depend on the fact we won't be crossing the gap.) | |
349 | Check to see if the most recent message looks a lot like the previous one. | |
350 | Return 0 if different, 1 if the new one should just replace it, or a | |
351 | value N > 1 if we should also append " [N times]". */ | |
f82aff7c | 352 | |
ff6c30e5 KH |
353 | static int |
354 | message_log_check_duplicate (prev_bol, this_bol) | |
355 | int prev_bol, this_bol; | |
356 | { | |
357 | int i; | |
358 | int len = Z - 1 - this_bol; | |
359 | int seen_dots = 0; | |
f82aff7c RS |
360 | unsigned char *p1 = BUF_CHAR_ADDRESS (current_buffer, prev_bol); |
361 | unsigned char *p2 = BUF_CHAR_ADDRESS (current_buffer, this_bol); | |
ff6c30e5 KH |
362 | |
363 | for (i = 0; i < len; i++) | |
364 | { | |
365 | if (i >= 3 && p1[i-3] == '.' && p1[i-2] == '.' && p1[i-1] == '.' | |
366 | && p1[i] != '\n') | |
367 | seen_dots = 1; | |
368 | if (p1[i] != p2[i]) | |
369 | return seen_dots; | |
370 | } | |
371 | p1 += len; | |
372 | if (*p1 == '\n') | |
373 | return 2; | |
374 | if (*p1++ == ' ' && *p1++ == '[') | |
375 | { | |
376 | int n = 0; | |
377 | while (*p1 >= '0' && *p1 <= '9') | |
378 | n = n * 10 + *p1++ - '0'; | |
379 | if (strncmp (p1, " times]\n", 8) == 0) | |
380 | return n+1; | |
381 | } | |
382 | return 0; | |
383 | } | |
1adc55de | 384 | \f |
f88eb0b6 | 385 | /* Display an echo area message M with a specified length of LEN chars. |
1adc55de | 386 | The string may include null characters. If M is 0, clear out any |
f88eb0b6 | 387 | existing message, and let the minibuffer text show through. |
1adc55de RS |
388 | |
389 | The buffer M must continue to exist until after the echo area | |
390 | gets cleared or some other message gets displayed there. | |
391 | ||
392 | Do not pass text that is stored in a Lisp string. | |
393 | Do not pass text in a buffer that was alloca'd. */ | |
f88eb0b6 KH |
394 | |
395 | void | |
396 | message2 (m, len) | |
397 | char *m; | |
398 | int len; | |
399 | { | |
400 | /* First flush out any partial line written with print. */ | |
3c6595e0 | 401 | message_log_maybe_newline (); |
f88eb0b6 KH |
402 | if (m) |
403 | message_dolog (m, len, 1); | |
5992c4f7 KH |
404 | message2_nolog (m, len); |
405 | } | |
406 | ||
407 | ||
1adc55de | 408 | /* The non-logging counterpart of message2. */ |
5992c4f7 KH |
409 | |
410 | void | |
411 | message2_nolog (m, len) | |
412 | char *m; | |
413 | int len; | |
90adcf20 RS |
414 | { |
415 | if (noninteractive) | |
416 | { | |
417 | if (noninteractive_need_newline) | |
418 | putc ('\n', stderr); | |
419 | noninteractive_need_newline = 0; | |
420 | fwrite (m, len, 1, stderr); | |
421 | if (cursor_in_echo_area == 0) | |
422 | fprintf (stderr, "\n"); | |
423 | fflush (stderr); | |
424 | } | |
425 | /* A null message buffer means that the frame hasn't really been | |
426 | initialized yet. Error messages get reported properly by | |
427 | cmd_error, so this must be just an informative message; toss it. */ | |
428 | else if (INTERACTIVE && FRAME_MESSAGE_BUF (selected_frame)) | |
429 | { | |
73af359d RS |
430 | Lisp_Object mini_window; |
431 | FRAME_PTR f; | |
90adcf20 | 432 | |
73af359d RS |
433 | /* Get the frame containing the minibuffer |
434 | that the selected frame is using. */ | |
435 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
436 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
437 | ||
73af359d | 438 | FRAME_SAMPLE_VISIBILITY (f); |
90adcf20 | 439 | if (FRAME_VISIBLE_P (selected_frame) |
73af359d RS |
440 | && ! FRAME_VISIBLE_P (f)) |
441 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (mini_window))); | |
90adcf20 RS |
442 | |
443 | if (m) | |
444 | { | |
445 | echo_area_glyphs = m; | |
446 | echo_area_glyphs_length = len; | |
b6436d4e RS |
447 | |
448 | if (minibuffer_auto_raise) | |
449 | Fraise_frame (WINDOW_FRAME (XWINDOW (mini_window))); | |
90adcf20 | 450 | } |
ded34426 JB |
451 | else |
452 | echo_area_glyphs = previous_echo_glyphs = 0; | |
453 | ||
454 | do_pending_window_change (); | |
455 | echo_area_display (); | |
73af359d | 456 | update_frame (f, 1, 1); |
ded34426 | 457 | do_pending_window_change (); |
853cf346 | 458 | if (frame_up_to_date_hook != 0 && ! gc_in_progress) |
73af359d | 459 | (*frame_up_to_date_hook) (f); |
ded34426 JB |
460 | } |
461 | } | |
1adc55de RS |
462 | \f |
463 | /* Display a null-terminated echo area message M. If M is 0, clear out any | |
464 | existing message, and let the minibuffer text show through. | |
465 | ||
466 | The buffer M must continue to exist until after the echo area | |
467 | gets cleared or some other message gets displayed there. | |
468 | ||
469 | Do not pass text that is stored in a Lisp string. | |
470 | Do not pass text in a buffer that was alloca'd. */ | |
ded34426 | 471 | |
48ae5f0a KH |
472 | void |
473 | message1 (m) | |
474 | char *m; | |
475 | { | |
476 | message2 (m, (m ? strlen (m) : 0)); | |
477 | } | |
478 | ||
0b1005ef KH |
479 | void |
480 | message1_nolog (m) | |
481 | char *m; | |
482 | { | |
483 | message2_nolog (m, (m ? strlen (m) : 0)); | |
484 | } | |
485 | ||
76412d64 RS |
486 | /* Truncate what will be displayed in the echo area |
487 | the next time we display it--but don't redisplay it now. */ | |
488 | ||
489 | void | |
490 | truncate_echo_area (len) | |
491 | int len; | |
492 | { | |
493 | /* A null message buffer means that the frame hasn't really been | |
494 | initialized yet. Error messages get reported properly by | |
495 | cmd_error, so this must be just an informative message; toss it. */ | |
496 | if (!noninteractive && INTERACTIVE && FRAME_MESSAGE_BUF (selected_frame)) | |
497 | echo_area_glyphs_length = len; | |
498 | } | |
499 | ||
44fa5b1e | 500 | /* Nonzero if FRAME_MESSAGE_BUF (selected_frame) is being used by print; |
9c74a0dd JB |
501 | zero if being used by message. */ |
502 | int message_buf_print; | |
503 | ||
1adc55de | 504 | /* Dump an informative message to the minibuf. If M is 0, clear out |
81d478f3 | 505 | any existing message, and let the minibuffer text show through. */ |
1adc55de | 506 | |
a2889657 | 507 | /* VARARGS 1 */ |
a2889657 JB |
508 | void |
509 | message (m, a1, a2, a3) | |
510 | char *m; | |
5d5ed907 | 511 | EMACS_INT a1, a2, a3; |
a2889657 JB |
512 | { |
513 | if (noninteractive) | |
514 | { | |
81d478f3 JB |
515 | if (m) |
516 | { | |
517 | if (noninteractive_need_newline) | |
518 | putc ('\n', stderr); | |
519 | noninteractive_need_newline = 0; | |
520 | fprintf (stderr, m, a1, a2, a3); | |
c4f14ccb RS |
521 | if (cursor_in_echo_area == 0) |
522 | fprintf (stderr, "\n"); | |
81d478f3 JB |
523 | fflush (stderr); |
524 | } | |
a2889657 | 525 | } |
1f40cad2 | 526 | else if (INTERACTIVE) |
a2889657 | 527 | { |
1f40cad2 JB |
528 | /* The frame whose minibuffer we're going to display the message on. |
529 | It may be larger than the selected frame, so we need | |
530 | to use its buffer, not the selected frame's buffer. */ | |
73af359d RS |
531 | Lisp_Object mini_window; |
532 | FRAME_PTR f; | |
533 | ||
534 | /* Get the frame containing the minibuffer | |
535 | that the selected frame is using. */ | |
536 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
537 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
1f40cad2 JB |
538 | |
539 | /* A null message buffer means that the frame hasn't really been | |
540 | initialized yet. Error messages get reported properly by | |
541 | cmd_error, so this must be just an informative message; toss it. */ | |
73af359d | 542 | if (FRAME_MESSAGE_BUF (f)) |
81d478f3 | 543 | { |
1f40cad2 JB |
544 | if (m) |
545 | { | |
90adcf20 | 546 | int len; |
a2889657 | 547 | #ifdef NO_ARG_ARRAY |
5d5ed907 | 548 | EMACS_INT a[3]; |
90adcf20 RS |
549 | a[0] = a1; |
550 | a[1] = a2; | |
551 | a[2] = a3; | |
a2889657 | 552 | |
73af359d | 553 | len = doprnt (FRAME_MESSAGE_BUF (f), |
1c9241f5 | 554 | FRAME_MESSAGE_BUF_SIZE (f), m, (char *)0, 3, a); |
a2889657 | 555 | #else |
73af359d | 556 | len = doprnt (FRAME_MESSAGE_BUF (f), |
1c9241f5 | 557 | FRAME_MESSAGE_BUF_SIZE (f), m, (char *)0, 3, &a1); |
1f40cad2 | 558 | #endif /* NO_ARG_ARRAY */ |
1f40cad2 | 559 | |
73af359d | 560 | message2 (FRAME_MESSAGE_BUF (f), len); |
1f40cad2 JB |
561 | } |
562 | else | |
563 | message1 (0); | |
564 | ||
565 | /* Print should start at the beginning of the message | |
566 | buffer next time. */ | |
567 | message_buf_print = 0; | |
81d478f3 | 568 | } |
a2889657 JB |
569 | } |
570 | } | |
571 | ||
1adc55de | 572 | /* The non-logging version of message. */ |
6c4429a5 KH |
573 | void |
574 | message_nolog (m, a1, a2, a3) | |
575 | char *m; | |
576 | EMACS_INT a1, a2, a3; | |
577 | { | |
578 | Lisp_Object old_log_max; | |
579 | old_log_max = Vmessage_log_max; | |
580 | Vmessage_log_max = Qnil; | |
581 | message (m, a1, a2, a3); | |
582 | Vmessage_log_max = old_log_max; | |
583 | } | |
584 | ||
131f2133 RS |
585 | void |
586 | update_echo_area () | |
587 | { | |
588 | message2 (echo_area_glyphs, echo_area_glyphs_length); | |
589 | } | |
1adc55de | 590 | \f |
a2889657 JB |
591 | static void |
592 | echo_area_display () | |
593 | { | |
594 | register int vpos; | |
44fa5b1e | 595 | FRAME_PTR f; |
73af359d | 596 | Lisp_Object mini_window; |
a2889657 | 597 | |
73af359d RS |
598 | /* Choose the minibuffer window for this display. |
599 | It is the minibuffer window used by the selected frame. */ | |
600 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
601 | /* This is the frame that window is in. */ | |
602 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
a2889657 | 603 | |
44fa5b1e | 604 | if (! FRAME_VISIBLE_P (f)) |
a2889657 | 605 | return; |
a2889657 | 606 | |
44fa5b1e | 607 | if (frame_garbaged) |
a2889657 | 608 | { |
02a9b6e4 | 609 | redraw_garbaged_frames (); |
44fa5b1e | 610 | frame_garbaged = 0; |
a2889657 JB |
611 | } |
612 | ||
613 | if (echo_area_glyphs || minibuf_level == 0) | |
614 | { | |
a2f016e3 RS |
615 | int i; |
616 | ||
73af359d RS |
617 | echo_area_window = mini_window; |
618 | ||
619 | vpos = XFASTINT (XWINDOW (mini_window)->top); | |
44fa5b1e | 620 | get_display_line (f, vpos, 0); |
a2f016e3 RS |
621 | |
622 | /* Make sure the columns that overlap a left-hand scroll bar | |
623 | are always clear. */ | |
624 | for (i = 0; i < FRAME_LEFT_SCROLL_BAR_WIDTH (f); i++) | |
625 | f->desired_glyphs->glyphs[vpos][i] = SPACEGLYPH; | |
626 | ||
73af359d | 627 | display_string (XWINDOW (mini_window), vpos, |
a2889657 | 628 | echo_area_glyphs ? echo_area_glyphs : "", |
90adcf20 | 629 | echo_area_glyphs ? echo_area_glyphs_length : -1, |
73f194f1 RS |
630 | FRAME_LEFT_SCROLL_BAR_WIDTH (f), |
631 | 0, 0, 0, FRAME_WIDTH (f)); | |
a2889657 | 632 | |
b6f0fe04 | 633 | #if 0 /* This just gets in the way. update_frame does the job. */ |
a2889657 | 634 | /* If desired cursor location is on this line, put it at end of text */ |
b5bbc9a5 KH |
635 | if (cursor_in_echo_area) |
636 | FRAME_CURSOR_Y (f) = vpos; | |
44fa5b1e JB |
637 | if (FRAME_CURSOR_Y (f) == vpos) |
638 | FRAME_CURSOR_X (f) = FRAME_DESIRED_GLYPHS (f)->used[vpos]; | |
b6f0fe04 | 639 | #endif |
daa37602 JB |
640 | |
641 | /* Fill the rest of the minibuffer window with blank lines. */ | |
642 | { | |
643 | int i; | |
644 | ||
b2a76982 | 645 | for (i = vpos + 1; |
73af359d | 646 | i < vpos + XFASTINT (XWINDOW (mini_window)->height); i++) |
daa37602 | 647 | { |
44fa5b1e | 648 | get_display_line (f, i, 0); |
73af359d | 649 | display_string (XWINDOW (mini_window), vpos, |
73f194f1 RS |
650 | "", 0, |
651 | FRAME_LEFT_SCROLL_BAR_WIDTH (f), | |
652 | 0, 0, 0, FRAME_WIDTH (f)); | |
daa37602 JB |
653 | } |
654 | } | |
a2889657 | 655 | } |
73af359d | 656 | else if (!EQ (mini_window, selected_window)) |
a2889657 JB |
657 | windows_or_buffers_changed++; |
658 | ||
73af359d | 659 | if (EQ (mini_window, selected_window)) |
a2889657 JB |
660 | this_line_bufpos = 0; |
661 | ||
662 | previous_echo_glyphs = echo_area_glyphs; | |
663 | } | |
1adc55de RS |
664 | \f |
665 | /* Update frame titles. */ | |
96a410bc | 666 | |
8f3343d0 | 667 | #ifdef HAVE_WINDOW_SYSTEM |
d39b6696 KH |
668 | static char frame_title_buf[512]; |
669 | static char *frame_title_ptr; | |
96a410bc | 670 | |
d39b6696 KH |
671 | static int |
672 | store_frame_title (str, mincol, maxcol) | |
673 | char *str; | |
674 | int mincol, maxcol; | |
675 | { | |
676 | char *limit; | |
677 | if (maxcol < 0 || maxcol >= sizeof(frame_title_buf)) | |
678 | maxcol = sizeof (frame_title_buf); | |
679 | limit = &frame_title_buf[maxcol]; | |
680 | while (*str != '\0' && frame_title_ptr < limit) | |
681 | *frame_title_ptr++ = *str++; | |
682 | while (frame_title_ptr < &frame_title_buf[mincol]) | |
683 | *frame_title_ptr++ = ' '; | |
684 | return frame_title_ptr - frame_title_buf; | |
685 | } | |
96a410bc | 686 | |
96a410bc KH |
687 | static void |
688 | x_consider_frame_title (frame) | |
689 | Lisp_Object frame; | |
690 | { | |
d39b6696 KH |
691 | Lisp_Object fmt; |
692 | struct buffer *obuf; | |
693 | int len; | |
96a410bc KH |
694 | FRAME_PTR f = XFRAME (frame); |
695 | ||
8f3343d0 | 696 | if (!(FRAME_WINDOW_P (f) || FRAME_MINIBUF_ONLY_P (f) || f->explicit_name)) |
d39b6696 | 697 | return; |
3450d04c KH |
698 | |
699 | /* Do we have more than one visible frame on this X display? */ | |
700 | { | |
701 | Lisp_Object tail; | |
702 | ||
703 | for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr) | |
704 | { | |
705 | FRAME_PTR tf = XFRAME (XCONS (tail)->car); | |
706 | ||
c9492f08 KH |
707 | if (tf != f && FRAME_KBOARD (tf) == FRAME_KBOARD (f) |
708 | && !FRAME_MINIBUF_ONLY_P (tf) | |
3450d04c KH |
709 | && (FRAME_VISIBLE_P (tf) || FRAME_ICONIFIED_P (tf))) |
710 | break; | |
711 | } | |
712 | ||
713 | multiple_frames = CONSP (tail); | |
714 | } | |
715 | ||
d39b6696 KH |
716 | obuf = current_buffer; |
717 | Fset_buffer (XWINDOW (f->selected_window)->buffer); | |
718 | fmt = (FRAME_ICONIFIED_P (f) ? Vicon_title_format : Vframe_title_format); | |
719 | frame_title_ptr = frame_title_buf; | |
720 | len = display_mode_element (XWINDOW (f->selected_window), 0, 0, 0, | |
721 | 0, sizeof (frame_title_buf), fmt); | |
722 | frame_title_ptr = 0; | |
723 | set_buffer_internal (obuf); | |
724 | /* Set the name only if it's changed. This avoids consing | |
725 | in the common case where it hasn't. (If it turns out that we've | |
726 | already wasted too much time by walking through the list with | |
727 | display_mode_element, then we might need to optimize at a higher | |
728 | level than this.) */ | |
729 | if (! STRINGP (f->name) || XSTRING (f->name)->size != len | |
730 | || bcmp (frame_title_buf, XSTRING (f->name)->data, len) != 0) | |
731 | x_implicitly_set_name (f, make_string (frame_title_buf, len), Qnil); | |
96a410bc | 732 | } |
c7c9ca97 KH |
733 | #else |
734 | #define frame_title_ptr ((char *)0) | |
e39322d9 | 735 | #define store_frame_title(str, mincol, maxcol) 0 |
96a410bc | 736 | #endif |
a2889657 | 737 | \f |
90adcf20 | 738 | /* Prepare for redisplay by updating menu-bar item lists when appropriate. |
87382820 | 739 | This can call eval. */ |
90adcf20 RS |
740 | |
741 | void | |
742 | prepare_menu_bars () | |
743 | { | |
744 | register struct window *w = XWINDOW (selected_window); | |
745 | int all_windows; | |
08b610e4 | 746 | struct gcpro gcpro1, gcpro2; |
90adcf20 | 747 | |
ecf7de9b | 748 | all_windows = (update_mode_lines || buffer_shared > 1 |
28995e67 | 749 | || windows_or_buffers_changed); |
90adcf20 | 750 | |
feb0c42f KH |
751 | /* Update all frame titles based on their buffer names, etc. |
752 | We do this before the menu bars so that the buffer-menu | |
753 | will show the up-to-date frame titles. | |
754 | ||
755 | This used to be done after the menu bars, for a reason that | |
756 | was stated as follows but which I do not understand: | |
757 | "We do this after the menu bars so that the frame will first | |
758 | create its menu bar using the name `emacs' if no other name | |
759 | has yet been specified." | |
760 | I think that is no longer a concern. */ | |
8f3343d0 | 761 | #ifdef HAVE_WINDOW_SYSTEM |
d3f46cff | 762 | if (windows_or_buffers_changed || update_mode_lines) |
feb0c42f KH |
763 | { |
764 | Lisp_Object tail, frame; | |
765 | ||
766 | FOR_EACH_FRAME (tail, frame) | |
767 | if (FRAME_VISIBLE_P (XFRAME (frame)) | |
768 | || FRAME_ICONIFIED_P (XFRAME (frame))) | |
769 | x_consider_frame_title (frame); | |
770 | } | |
771 | #endif | |
772 | ||
90adcf20 RS |
773 | /* Update the menu bar item lists, if appropriate. |
774 | This has to be done before any actual redisplay | |
775 | or generation of display lines. */ | |
776 | if (all_windows) | |
777 | { | |
778 | Lisp_Object tail, frame; | |
a2725ab2 RS |
779 | int count = specpdl_ptr - specpdl; |
780 | ||
9cbab4ff | 781 | record_unwind_protect (Fstore_match_data, Fmatch_data (Qnil, Qnil)); |
90adcf20 RS |
782 | |
783 | FOR_EACH_FRAME (tail, frame) | |
08b610e4 RS |
784 | { |
785 | /* If a window on this frame changed size, | |
786 | report that to the user and clear the size-change flag. */ | |
787 | if (FRAME_WINDOW_SIZES_CHANGED (XFRAME (frame))) | |
788 | { | |
789 | Lisp_Object functions; | |
14510fee RS |
790 | /* Clear flag first in case we get error below. */ |
791 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (frame)) = 0; | |
08b610e4 RS |
792 | functions = Vwindow_size_change_functions; |
793 | GCPRO2 (tail, functions); | |
794 | while (CONSP (functions)) | |
795 | { | |
796 | call1 (XCONS (functions)->car, frame); | |
797 | functions = XCONS (functions)->cdr; | |
798 | } | |
799 | UNGCPRO; | |
08b610e4 RS |
800 | } |
801 | GCPRO1 (tail); | |
a2725ab2 | 802 | update_menu_bar (XFRAME (frame), 0); |
08b610e4 RS |
803 | UNGCPRO; |
804 | } | |
a2725ab2 RS |
805 | |
806 | unbind_to (count, Qnil); | |
90adcf20 | 807 | } |
ecf7de9b | 808 | else |
a2725ab2 | 809 | update_menu_bar (selected_frame, 1); |
cd6dfed6 RS |
810 | |
811 | /* Motif needs this. See comment in xmenu.c. | |
812 | Turn it off when pending_menu_activation is not defined. */ | |
813 | #ifdef USE_X_TOOLKIT | |
814 | pending_menu_activation = 0; | |
815 | #endif | |
90adcf20 RS |
816 | } |
817 | \f | |
44fa5b1e | 818 | /* Do a frame update, taking possible shortcuts into account. |
a2889657 JB |
819 | This is the main external entry point for redisplay. |
820 | ||
821 | If the last redisplay displayed an echo area message and that | |
822 | message is no longer requested, we clear the echo area | |
823 | or bring back the minibuffer if that is in use. | |
824 | ||
90adcf20 RS |
825 | Do not call eval from within this function. |
826 | Calls to eval after the call to echo_area_display would confuse | |
827 | the display_line mechanism and would cause a crash. | |
828 | Calls to eval before that point will work most of the time, | |
829 | but can still lose, because this function | |
830 | can be called from signal handlers; with alarms set up; | |
a2889657 | 831 | or with synchronous processes running. |
90adcf20 | 832 | |
a2889657 JB |
833 | See Fcall_process; if you called it from here, it could be |
834 | entered recursively. */ | |
835 | ||
0d231165 RS |
836 | static int do_verify_charstarts; |
837 | ||
463f6b91 RS |
838 | /* Counter is used to clear the face cache |
839 | no more than once ever 1000 redisplays. */ | |
840 | static int clear_face_cache_count; | |
841 | ||
20de20dc RS |
842 | /* Record the previous terminal frame we displayed. */ |
843 | static FRAME_PTR previous_terminal_frame; | |
844 | ||
a2889657 JB |
845 | void |
846 | redisplay () | |
e9874cee RS |
847 | { |
848 | redisplay_internal (0); | |
849 | } | |
850 | ||
851 | /* If PRESERVE_ECHO_AREA is nonzero, it means this redisplay | |
852 | is not in response to any user action; therefore, we should | |
94a66eea RS |
853 | preserve the echo area. (Actually, our caller does that job.) |
854 | Perhaps in the future avoid recentering windows | |
e9874cee RS |
855 | if it is not necessary; currently that causes some problems. */ |
856 | ||
857 | static void | |
858 | redisplay_internal (preserve_echo_area) | |
859 | int preserve_echo_area; | |
a2889657 JB |
860 | { |
861 | register struct window *w = XWINDOW (selected_window); | |
862 | register int pause; | |
863 | int must_finish = 0; | |
864 | int all_windows; | |
865 | register int tlbufpos, tlendpos; | |
866 | struct position pos; | |
a2889657 JB |
867 | |
868 | if (noninteractive) | |
869 | return; | |
870 | ||
15f0cf78 RS |
871 | #ifdef USE_X_TOOLKIT |
872 | if (popup_activated ()) | |
873 | return; | |
874 | #endif | |
875 | ||
fd8ff63d | 876 | if (! FRAME_WINDOW_P (selected_frame) |
20de20dc RS |
877 | && previous_terminal_frame != selected_frame) |
878 | { | |
879 | /* Since frames on an ASCII terminal share the same display area, | |
880 | displaying a different frame means redisplay the whole thing. */ | |
881 | windows_or_buffers_changed++; | |
882 | SET_FRAME_GARBAGED (selected_frame); | |
883 | XSETFRAME (Vterminal_frame, selected_frame); | |
884 | } | |
885 | previous_terminal_frame = selected_frame; | |
20de20dc | 886 | |
d724d989 JB |
887 | /* Set the visible flags for all frames. |
888 | Do this before checking for resized or garbaged frames; they want | |
889 | to know if their frames are visible. | |
890 | See the comment in frame.h for FRAME_SAMPLE_VISIBILITY. */ | |
891 | { | |
35f56f96 | 892 | Lisp_Object tail, frame; |
d724d989 | 893 | |
35f56f96 | 894 | FOR_EACH_FRAME (tail, frame) |
f82aff7c RS |
895 | { |
896 | FRAME_SAMPLE_VISIBILITY (XFRAME (frame)); | |
897 | ||
898 | /* Clear out all the display lines in which we will generate the | |
899 | glyphs to display. */ | |
900 | init_desired_glyphs (XFRAME (frame)); | |
901 | } | |
d724d989 JB |
902 | } |
903 | ||
44fa5b1e | 904 | /* Notice any pending interrupt request to change frame size. */ |
a2889657 JB |
905 | do_pending_window_change (); |
906 | ||
44fa5b1e | 907 | if (frame_garbaged) |
a2889657 | 908 | { |
02a9b6e4 | 909 | redraw_garbaged_frames (); |
44fa5b1e | 910 | frame_garbaged = 0; |
a2889657 JB |
911 | } |
912 | ||
f82aff7c RS |
913 | prepare_menu_bars (); |
914 | ||
28995e67 | 915 | if (windows_or_buffers_changed) |
a2889657 JB |
916 | update_mode_lines++; |
917 | ||
538f13d4 RS |
918 | /* Detect case that we need to write or remove a star in the mode line. */ |
919 | if ((SAVE_MODIFF < MODIFF) != !NILP (w->last_had_star)) | |
a2889657 JB |
920 | { |
921 | w->update_mode_line = Qt; | |
922 | if (buffer_shared > 1) | |
923 | update_mode_lines++; | |
924 | } | |
925 | ||
28995e67 RS |
926 | /* If %c is in use, update it if needed. */ |
927 | if (!NILP (w->column_number_displayed) | |
928 | /* This alternative quickly identifies a common case | |
929 | where no change is needed. */ | |
930 | && !(PT == XFASTINT (w->last_point) | |
8850a573 RS |
931 | && XFASTINT (w->last_modified) >= MODIFF |
932 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF) | |
28995e67 RS |
933 | && XFASTINT (w->column_number_displayed) != current_column ()) |
934 | w->update_mode_line = Qt; | |
935 | ||
44fa5b1e | 936 | FRAME_SCROLL_BOTTOM_VPOS (XFRAME (w->frame)) = -1; |
a2889657 JB |
937 | |
938 | all_windows = update_mode_lines || buffer_shared > 1; | |
a2889657 JB |
939 | |
940 | /* If specs for an arrow have changed, do thorough redisplay | |
941 | to ensure we remove any arrow that should no longer exist. */ | |
ded34426 JB |
942 | if (! EQ (Voverlay_arrow_position, last_arrow_position) |
943 | || ! EQ (Voverlay_arrow_string, last_arrow_string)) | |
28995e67 | 944 | all_windows = 1; |
a2889657 | 945 | |
90adcf20 RS |
946 | /* Normally the message* functions will have already displayed and |
947 | updated the echo area, but the frame may have been trashed, or | |
948 | the update may have been preempted, so display the echo area | |
949 | again here. */ | |
950 | if (echo_area_glyphs || previous_echo_glyphs) | |
951 | { | |
952 | echo_area_display (); | |
953 | must_finish = 1; | |
954 | } | |
955 | ||
bd66d1ba RS |
956 | /* If showing region, and mark has changed, must redisplay whole window. */ |
957 | if (((!NILP (Vtransient_mark_mode) | |
958 | && !NILP (XBUFFER (w->buffer)->mark_active)) | |
959 | != !NILP (w->region_showing)) | |
82d04750 JB |
960 | || (!NILP (w->region_showing) |
961 | && !EQ (w->region_showing, | |
962 | Fmarker_position (XBUFFER (w->buffer)->mark)))) | |
bd66d1ba RS |
963 | this_line_bufpos = -1; |
964 | ||
a2889657 JB |
965 | tlbufpos = this_line_bufpos; |
966 | tlendpos = this_line_endpos; | |
265a9e55 | 967 | if (!all_windows && tlbufpos > 0 && NILP (w->update_mode_line) |
73af359d | 968 | && !current_buffer->clip_changed |
44fa5b1e | 969 | && FRAME_VISIBLE_P (XFRAME (w->frame)) |
a2889657 JB |
970 | /* Make sure recorded data applies to current buffer, etc */ |
971 | && this_line_buffer == current_buffer | |
972 | && current_buffer == XBUFFER (w->buffer) | |
265a9e55 | 973 | && NILP (w->force_start) |
a2889657 | 974 | /* Point must be on the line that we have info recorded about */ |
ae3b1442 KH |
975 | && PT >= tlbufpos |
976 | && PT <= Z - tlendpos | |
a2889657 JB |
977 | /* All text outside that line, including its final newline, |
978 | must be unchanged */ | |
8850a573 RS |
979 | && ((XFASTINT (w->last_modified) >= MODIFF |
980 | && (XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF)) | |
a2889657 JB |
981 | || (beg_unchanged >= tlbufpos - 1 |
982 | && GPT >= tlbufpos | |
05ba02eb JB |
983 | /* If selective display, can't optimize |
984 | if the changes start at the beginning of the line. */ | |
e24c997d | 985 | && ((INTEGERP (current_buffer->selective_display) |
05ba02eb JB |
986 | && XINT (current_buffer->selective_display) > 0 |
987 | ? (beg_unchanged >= tlbufpos | |
988 | && GPT > tlbufpos) | |
989 | : 1)) | |
a2889657 JB |
990 | && end_unchanged >= tlendpos |
991 | && Z - GPT >= tlendpos))) | |
992 | { | |
1c9241f5 | 993 | if (tlbufpos > BEGV && FETCH_BYTE (tlbufpos - 1) != '\n' |
a2889657 | 994 | && (tlbufpos == ZV |
1c9241f5 | 995 | || FETCH_BYTE (tlbufpos) == '\n')) |
a2889657 JB |
996 | /* Former continuation line has disappeared by becoming empty */ |
997 | goto cancel; | |
998 | else if (XFASTINT (w->last_modified) < MODIFF | |
8850a573 | 999 | || XFASTINT (w->last_overlay_modified) < OVERLAY_MODIFF |
a2889657 JB |
1000 | || MINI_WINDOW_P (w)) |
1001 | { | |
1c9241f5 KH |
1002 | /* We have to handle the case of continuation around a |
1003 | wide-column character (See the comment in indent.c around | |
1004 | line 885). | |
1005 | ||
1006 | For instance, in the following case: | |
1007 | ||
1008 | -------- Insert -------- | |
1009 | K_A_N_\\ `a' K_A_N_a\ `X_' are wide-column chars. | |
1010 | J_I_ ==> J_I_ `^^' are cursors. | |
1011 | ^^ ^^ | |
1012 | -------- -------- | |
1013 | ||
1014 | As we have to redraw the line above, we should goto cancel. */ | |
1015 | ||
1016 | struct position val; | |
1017 | int prevline; | |
1018 | ||
1019 | prevline = find_next_newline (tlbufpos, -1); | |
1020 | val = *compute_motion (prevline, 0, | |
1021 | XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0, | |
1022 | 0, | |
1023 | tlbufpos, | |
1024 | 1 << (BITS_PER_SHORT - 1), | |
1025 | 1 << (BITS_PER_SHORT - 1), | |
1026 | window_internal_width (w) - 1, | |
1027 | XINT (w->hscroll), 0, w); | |
1028 | if (val.hpos != this_line_start_hpos) | |
1029 | goto cancel; | |
1030 | ||
a2889657 JB |
1031 | cursor_vpos = -1; |
1032 | overlay_arrow_seen = 0; | |
ca26e1c8 | 1033 | zv_strings_seen = 0; |
a2889657 | 1034 | display_text_line (w, tlbufpos, this_line_vpos, this_line_start_hpos, |
0f9c0ff0 | 1035 | pos_tab_offset (w, tlbufpos), 0); |
a2889657 JB |
1036 | /* If line contains point, is not continued, |
1037 | and ends at same distance from eob as before, we win */ | |
1038 | if (cursor_vpos >= 0 && this_line_bufpos | |
1039 | && this_line_endpos == tlendpos) | |
1040 | { | |
0d231165 RS |
1041 | /* If this is not the window's last line, |
1042 | we must adjust the charstarts of the lines below. */ | |
1043 | if (this_line_vpos + 1 | |
1044 | < XFASTINT (w->top) + window_internal_height (w)) | |
85bcef6c | 1045 | { |
73f194f1 | 1046 | int left = WINDOW_LEFT_MARGIN (w); |
85bcef6c RS |
1047 | int *charstart_next_line |
1048 | = FRAME_CURRENT_GLYPHS (XFRAME (WINDOW_FRAME (w)))->charstarts[this_line_vpos + 1]; | |
85bcef6c RS |
1049 | int adjust; |
1050 | ||
1051 | if (Z - tlendpos == ZV) | |
1052 | /* This line ends at end of (accessible part of) buffer. | |
1053 | There is no newline to count. */ | |
1054 | adjust = Z - tlendpos - charstart_next_line[left]; | |
1055 | else | |
1056 | /* This line ends in a newline. | |
1057 | Must take account of the newline and the rest of the | |
1058 | text that follows. */ | |
1059 | adjust = Z - tlendpos + 1 - charstart_next_line[left]; | |
1060 | ||
1061 | adjust_window_charstarts (w, this_line_vpos, adjust); | |
1062 | } | |
46db8486 | 1063 | |
73f194f1 | 1064 | if (!WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1065 | preserve_other_columns (w); |
1066 | goto update; | |
1067 | } | |
1068 | else | |
1069 | goto cancel; | |
1070 | } | |
b6f0fe04 RS |
1071 | else if (PT == XFASTINT (w->last_point) |
1072 | /* Make sure the cursor was last displayed | |
1073 | in this window. Otherwise we have to reposition it. */ | |
1074 | && XINT (w->top) <= FRAME_CURSOR_Y (selected_frame) | |
1075 | && (XINT (w->top) + XINT (w->height) | |
1076 | > FRAME_CURSOR_Y (selected_frame))) | |
a2889657 JB |
1077 | { |
1078 | if (!must_finish) | |
1079 | { | |
1080 | do_pending_window_change (); | |
1081 | return; | |
1082 | } | |
1083 | goto update; | |
1084 | } | |
8b51f1e3 KH |
1085 | /* If highlighting the region, or if the cursor is in the echo area, |
1086 | then we can't just move the cursor. */ | |
bd66d1ba RS |
1087 | else if (! (!NILP (Vtransient_mark_mode) |
1088 | && !NILP (current_buffer->mark_active)) | |
2bf32c5d | 1089 | && w == XWINDOW (current_buffer->last_selected_window) |
8b51f1e3 KH |
1090 | && NILP (w->region_showing) |
1091 | && !cursor_in_echo_area) | |
a2889657 JB |
1092 | { |
1093 | pos = *compute_motion (tlbufpos, 0, | |
1094 | XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0, | |
ca26e1c8 | 1095 | 0, |
68be917d | 1096 | PT, 2, - (1 << (BITS_PER_SHORT - 1)), |
b1d1124b | 1097 | window_internal_width (w) - 1, |
de3e8b15 | 1098 | XINT (w->hscroll), |
e37f06d7 | 1099 | pos_tab_offset (w, tlbufpos), w); |
a2889657 JB |
1100 | if (pos.vpos < 1) |
1101 | { | |
210e752f | 1102 | int width = window_internal_width (w) - 1; |
44fa5b1e | 1103 | FRAME_CURSOR_X (selected_frame) |
73f194f1 | 1104 | = WINDOW_LEFT_MARGIN (w) + minmax (0, pos.hpos, width); |
44fa5b1e | 1105 | FRAME_CURSOR_Y (selected_frame) = this_line_vpos; |
a2889657 JB |
1106 | goto update; |
1107 | } | |
1108 | else | |
1109 | goto cancel; | |
1110 | } | |
1111 | cancel: | |
1112 | /* Text changed drastically or point moved off of line */ | |
44fa5b1e | 1113 | cancel_line (this_line_vpos, selected_frame); |
a2889657 JB |
1114 | } |
1115 | ||
1116 | this_line_bufpos = 0; | |
1117 | all_windows |= buffer_shared > 1; | |
1118 | ||
463f6b91 RS |
1119 | clear_face_cache_count++; |
1120 | ||
a2889657 JB |
1121 | if (all_windows) |
1122 | { | |
35f56f96 | 1123 | Lisp_Object tail, frame; |
a2889657 | 1124 | |
87485d6f | 1125 | #ifdef HAVE_FACES |
463f6b91 RS |
1126 | /* Clear the face cache, only when we do a full redisplay |
1127 | and not too often either. */ | |
1128 | if (clear_face_cache_count > 1000) | |
1129 | { | |
1130 | clear_face_cache (); | |
1131 | clear_face_cache_count = 0; | |
1132 | } | |
31b24551 JB |
1133 | #endif |
1134 | ||
a2889657 | 1135 | /* Recompute # windows showing selected buffer. |
8de2d90b | 1136 | This will be incremented each time such a window is displayed. */ |
a2889657 JB |
1137 | buffer_shared = 0; |
1138 | ||
35f56f96 | 1139 | FOR_EACH_FRAME (tail, frame) |
30c566e4 | 1140 | { |
35f56f96 | 1141 | FRAME_PTR f = XFRAME (frame); |
fd8ff63d | 1142 | if (FRAME_WINDOW_P (f) || f == selected_frame) |
9769686d | 1143 | { |
35f56f96 | 1144 | |
9769686d RS |
1145 | /* Mark all the scroll bars to be removed; we'll redeem the ones |
1146 | we want when we redisplay their windows. */ | |
1147 | if (condemn_scroll_bars_hook) | |
1148 | (*condemn_scroll_bars_hook) (f); | |
30c566e4 | 1149 | |
9769686d | 1150 | if (FRAME_VISIBLE_P (f)) |
e9874cee | 1151 | redisplay_windows (FRAME_ROOT_WINDOW (f), preserve_echo_area); |
30c566e4 | 1152 | |
9769686d RS |
1153 | /* Any scroll bars which redisplay_windows should have nuked |
1154 | should now go away. */ | |
1155 | if (judge_scroll_bars_hook) | |
1156 | (*judge_scroll_bars_hook) (f); | |
1157 | } | |
30c566e4 | 1158 | } |
a2889657 | 1159 | } |
44fa5b1e | 1160 | else if (FRAME_VISIBLE_P (selected_frame)) |
a2889657 | 1161 | { |
e9874cee | 1162 | redisplay_window (selected_window, 1, preserve_echo_area); |
73f194f1 | 1163 | if (!WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1164 | preserve_other_columns (w); |
1165 | } | |
1166 | ||
1167 | update: | |
1168 | /* Prevent various kinds of signals during display update. | |
1169 | stdio is not robust about handling signals, | |
1170 | which can cause an apparent I/O error. */ | |
1171 | if (interrupt_input) | |
1172 | unrequest_sigio (); | |
1173 | stop_polling (); | |
1174 | ||
a2889657 JB |
1175 | if (all_windows) |
1176 | { | |
1177 | Lisp_Object tail; | |
1178 | ||
1179 | pause = 0; | |
1180 | ||
44fa5b1e | 1181 | for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr) |
a2889657 | 1182 | { |
44fa5b1e | 1183 | FRAME_PTR f; |
a2889657 | 1184 | |
e24c997d | 1185 | if (!FRAMEP (XCONS (tail)->car)) |
a2889657 JB |
1186 | continue; |
1187 | ||
44fa5b1e | 1188 | f = XFRAME (XCONS (tail)->car); |
1af9f229 | 1189 | |
fd8ff63d | 1190 | if ((FRAME_WINDOW_P (f) || f == selected_frame) |
1af9f229 | 1191 | && FRAME_VISIBLE_P (f)) |
a2889657 | 1192 | { |
44fa5b1e | 1193 | pause |= update_frame (f, 0, 0); |
a2889657 | 1194 | if (!pause) |
efc63ef0 RS |
1195 | { |
1196 | mark_window_display_accurate (f->root_window, 1); | |
1197 | if (frame_up_to_date_hook != 0) | |
1198 | (*frame_up_to_date_hook) (f); | |
1199 | } | |
a2889657 JB |
1200 | } |
1201 | } | |
1202 | } | |
1203 | else | |
6e8290aa | 1204 | { |
44fa5b1e JB |
1205 | if (FRAME_VISIBLE_P (selected_frame)) |
1206 | pause = update_frame (selected_frame, 0, 0); | |
4d641a15 KH |
1207 | else |
1208 | pause = 0; | |
d724d989 | 1209 | |
8de2d90b | 1210 | /* We may have called echo_area_display at the top of this |
44fa5b1e JB |
1211 | function. If the echo area is on another frame, that may |
1212 | have put text on a frame other than the selected one, so the | |
1213 | above call to update_frame would not have caught it. Catch | |
8de2d90b JB |
1214 | it here. */ |
1215 | { | |
84faf44c RS |
1216 | Lisp_Object mini_window; |
1217 | FRAME_PTR mini_frame; | |
1218 | ||
1219 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
1220 | mini_frame = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
8de2d90b | 1221 | |
fd8ff63d | 1222 | if (mini_frame != selected_frame && FRAME_WINDOW_P (mini_frame)) |
44fa5b1e | 1223 | pause |= update_frame (mini_frame, 0, 0); |
8de2d90b | 1224 | } |
6e8290aa | 1225 | } |
a2889657 | 1226 | |
44fa5b1e | 1227 | /* If frame does not match, prevent doing single-line-update next time. |
a2889657 JB |
1228 | Also, don't forget to check every line to update the arrow. */ |
1229 | if (pause) | |
1230 | { | |
1231 | this_line_bufpos = 0; | |
265a9e55 | 1232 | if (!NILP (last_arrow_position)) |
a2889657 JB |
1233 | { |
1234 | last_arrow_position = Qt; | |
1235 | last_arrow_string = Qt; | |
1236 | } | |
44fa5b1e | 1237 | /* If we pause after scrolling, some lines in current_frame |
a2889657 JB |
1238 | may be null, so preserve_other_columns won't be able to |
1239 | preserve all the vertical-bar separators. So, avoid using it | |
1240 | in that case. */ | |
73f194f1 | 1241 | if (!WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1242 | update_mode_lines = 1; |
1243 | } | |
1244 | ||
44fa5b1e | 1245 | /* Now text on frame agrees with windows, so |
a2889657 JB |
1246 | put info into the windows for partial redisplay to follow */ |
1247 | ||
1248 | if (!pause) | |
1249 | { | |
1250 | register struct buffer *b = XBUFFER (w->buffer); | |
1251 | ||
1252 | blank_end_of_window = 0; | |
a2889657 | 1253 | unchanged_modified = BUF_MODIFF (b); |
8850a573 | 1254 | overlay_unchanged_modified = BUF_OVERLAY_MODIFF (b); |
a2889657 JB |
1255 | beg_unchanged = BUF_GPT (b) - BUF_BEG (b); |
1256 | end_unchanged = BUF_Z (b) - BUF_GPT (b); | |
1257 | ||
c2213350 KH |
1258 | XSETFASTINT (w->last_point, BUF_PT (b)); |
1259 | XSETFASTINT (w->last_point_x, FRAME_CURSOR_X (selected_frame)); | |
1260 | XSETFASTINT (w->last_point_y, FRAME_CURSOR_Y (selected_frame)); | |
a2889657 JB |
1261 | |
1262 | if (all_windows) | |
11e82b76 | 1263 | mark_window_display_accurate (FRAME_ROOT_WINDOW (selected_frame), 1); |
a2889657 JB |
1264 | else |
1265 | { | |
28995e67 | 1266 | b->clip_changed = 0; |
a2889657 | 1267 | w->update_mode_line = Qnil; |
c2213350 | 1268 | XSETFASTINT (w->last_modified, BUF_MODIFF (b)); |
8850a573 | 1269 | XSETFASTINT (w->last_overlay_modified, BUF_OVERLAY_MODIFF (b)); |
538f13d4 RS |
1270 | w->last_had_star |
1271 | = (BUF_MODIFF (XBUFFER (w->buffer)) > BUF_SAVE_MODIFF (XBUFFER (w->buffer)) | |
1272 | ? Qt : Qnil); | |
d2f84654 | 1273 | w->window_end_valid = w->buffer; |
a2889657 JB |
1274 | last_arrow_position = Voverlay_arrow_position; |
1275 | last_arrow_string = Voverlay_arrow_string; | |
0d231165 RS |
1276 | if (do_verify_charstarts) |
1277 | verify_charstarts (w); | |
efc63ef0 RS |
1278 | if (frame_up_to_date_hook != 0) |
1279 | (*frame_up_to_date_hook) (selected_frame); | |
a2889657 JB |
1280 | } |
1281 | update_mode_lines = 0; | |
1282 | windows_or_buffers_changed = 0; | |
1283 | } | |
1284 | ||
1285 | /* Start SIGIO interrupts coming again. | |
1286 | Having them off during the code above | |
1287 | makes it less likely one will discard output, | |
1288 | but not impossible, since there might be stuff | |
1289 | in the system buffer here. | |
1290 | But it is much hairier to try to do anything about that. */ | |
1291 | ||
1292 | if (interrupt_input) | |
1293 | request_sigio (); | |
1294 | start_polling (); | |
1295 | ||
44fa5b1e | 1296 | /* Change frame size now if a change is pending. */ |
a2889657 | 1297 | do_pending_window_change (); |
d8e242fd RS |
1298 | |
1299 | /* If we just did a pending size change, redisplay again | |
1300 | for the new size. */ | |
3c8c72e0 | 1301 | if (windows_or_buffers_changed && !pause) |
d8e242fd | 1302 | redisplay (); |
a2889657 JB |
1303 | } |
1304 | ||
1305 | /* Redisplay, but leave alone any recent echo area message | |
1306 | unless another message has been requested in its place. | |
1307 | ||
1308 | This is useful in situations where you need to redisplay but no | |
1309 | user action has occurred, making it inappropriate for the message | |
1310 | area to be cleared. See tracking_off and | |
1311 | wait_reading_process_input for examples of these situations. */ | |
1312 | ||
1313 | redisplay_preserve_echo_area () | |
1314 | { | |
1315 | if (echo_area_glyphs == 0 && previous_echo_glyphs != 0) | |
1316 | { | |
1317 | echo_area_glyphs = previous_echo_glyphs; | |
e9874cee | 1318 | redisplay_internal (1); |
a2889657 JB |
1319 | echo_area_glyphs = 0; |
1320 | } | |
1321 | else | |
e9874cee | 1322 | redisplay_internal (1); |
a2889657 JB |
1323 | } |
1324 | ||
1325 | void | |
1326 | mark_window_display_accurate (window, flag) | |
1327 | Lisp_Object window; | |
1328 | int flag; | |
1329 | { | |
1330 | register struct window *w; | |
1331 | ||
265a9e55 | 1332 | for (;!NILP (window); window = w->next) |
a2889657 | 1333 | { |
e24c997d | 1334 | if (!WINDOWP (window)) abort (); |
a2889657 JB |
1335 | w = XWINDOW (window); |
1336 | ||
265a9e55 | 1337 | if (!NILP (w->buffer)) |
bd66d1ba | 1338 | { |
c2213350 KH |
1339 | XSETFASTINT (w->last_modified, |
1340 | !flag ? 0 : BUF_MODIFF (XBUFFER (w->buffer))); | |
8850a573 RS |
1341 | XSETFASTINT (w->last_overlay_modified, |
1342 | !flag ? 0 : BUF_OVERLAY_MODIFF (XBUFFER (w->buffer))); | |
538f13d4 RS |
1343 | w->last_had_star |
1344 | = (BUF_MODIFF (XBUFFER (w->buffer)) > BUF_SAVE_MODIFF (XBUFFER (w->buffer)) | |
1345 | ? Qt : Qnil); | |
bd66d1ba RS |
1346 | |
1347 | /* Record if we are showing a region, so can make sure to | |
1348 | update it fully at next redisplay. */ | |
1349 | w->region_showing = (!NILP (Vtransient_mark_mode) | |
2bf32c5d | 1350 | && w == XWINDOW (current_buffer->last_selected_window) |
bd66d1ba RS |
1351 | && !NILP (XBUFFER (w->buffer)->mark_active) |
1352 | ? Fmarker_position (XBUFFER (w->buffer)->mark) | |
1353 | : Qnil); | |
1354 | } | |
1355 | ||
d2f84654 | 1356 | w->window_end_valid = w->buffer; |
a2889657 | 1357 | w->update_mode_line = Qnil; |
051e7076 | 1358 | if (!NILP (w->buffer) && flag) |
28995e67 | 1359 | XBUFFER (w->buffer)->clip_changed = 0; |
a2889657 | 1360 | |
265a9e55 | 1361 | if (!NILP (w->vchild)) |
a2889657 | 1362 | mark_window_display_accurate (w->vchild, flag); |
265a9e55 | 1363 | if (!NILP (w->hchild)) |
a2889657 JB |
1364 | mark_window_display_accurate (w->hchild, flag); |
1365 | } | |
1366 | ||
1367 | if (flag) | |
1368 | { | |
1369 | last_arrow_position = Voverlay_arrow_position; | |
1370 | last_arrow_string = Voverlay_arrow_string; | |
1371 | } | |
1372 | else | |
1373 | { | |
1374 | /* t is unequal to any useful value of Voverlay_arrow_... */ | |
1375 | last_arrow_position = Qt; | |
1376 | last_arrow_string = Qt; | |
1377 | } | |
1378 | } | |
1379 | \f | |
ecf7de9b | 1380 | /* Update the menu bar item list for frame F. |
90adcf20 | 1381 | This has to be done before we start to fill in any display lines, |
a2725ab2 RS |
1382 | because it can call eval. |
1383 | ||
1384 | If SAVE_MATCH_DATA is 1, we must save and restore it here. */ | |
90adcf20 RS |
1385 | |
1386 | static void | |
a2725ab2 | 1387 | update_menu_bar (f, save_match_data) |
ecf7de9b | 1388 | FRAME_PTR f; |
a2725ab2 | 1389 | int save_match_data; |
90adcf20 | 1390 | { |
90adcf20 | 1391 | struct buffer *old = current_buffer; |
ecf7de9b RS |
1392 | Lisp_Object window; |
1393 | register struct window *w; | |
a2725ab2 | 1394 | |
ecf7de9b RS |
1395 | window = FRAME_SELECTED_WINDOW (f); |
1396 | w = XWINDOW (window); | |
90adcf20 RS |
1397 | |
1398 | if (update_mode_lines) | |
1399 | w->update_mode_line = Qt; | |
1400 | ||
d1e74921 | 1401 | if (FRAME_WINDOW_P (f) |
d3413a53 | 1402 | ? |
dc937613 | 1403 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
cf074754 | 1404 | FRAME_EXTERNAL_MENU_BAR (f) |
78614721 | 1405 | #else |
cf074754 | 1406 | FRAME_MENU_BAR_LINES (f) > 0 |
78614721 | 1407 | #endif |
d3413a53 | 1408 | : FRAME_MENU_BAR_LINES (f) > 0) |
90adcf20 RS |
1409 | { |
1410 | /* If the user has switched buffers or windows, we need to | |
1411 | recompute to reflect the new bindings. But we'll | |
1412 | recompute when update_mode_lines is set too; that means | |
1413 | that people can use force-mode-line-update to request | |
1414 | that the menu bar be recomputed. The adverse effect on | |
1415 | the rest of the redisplay algorithm is about the same as | |
1416 | windows_or_buffers_changed anyway. */ | |
1417 | if (windows_or_buffers_changed | |
cf074754 | 1418 | || !NILP (w->update_mode_line) |
538f13d4 RS |
1419 | || ((BUF_SAVE_MODIFF (XBUFFER (w->buffer)) |
1420 | < BUF_MODIFF (XBUFFER (w->buffer))) | |
1421 | != !NILP (w->last_had_star)) | |
94bb7f9b KH |
1422 | || ((!NILP (Vtransient_mark_mode) |
1423 | && !NILP (XBUFFER (w->buffer)->mark_active)) | |
1424 | != !NILP (w->region_showing))) | |
90adcf20 RS |
1425 | { |
1426 | struct buffer *prev = current_buffer; | |
a2725ab2 RS |
1427 | int count = specpdl_ptr - specpdl; |
1428 | ||
399164b4 | 1429 | set_buffer_internal_1 (XBUFFER (w->buffer)); |
eac4251c | 1430 | if (save_match_data) |
9cbab4ff | 1431 | record_unwind_protect (Fstore_match_data, Fmatch_data (Qnil, Qnil)); |
399164b4 | 1432 | if (NILP (Voverriding_local_map_menu_flag)) |
d46fb96a KH |
1433 | { |
1434 | specbind (Qoverriding_terminal_local_map, Qnil); | |
1435 | specbind (Qoverriding_local_map, Qnil); | |
1436 | } | |
a2725ab2 | 1437 | |
34acc8e6 KH |
1438 | /* Run the Lucid hook. */ |
1439 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
1440 | /* If it has changed current-menubar from previous value, | |
1441 | really recompute the menubar from the value. */ | |
1442 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
1443 | call0 (Qrecompute_lucid_menubar); | |
e02500d4 | 1444 | safe_run_hooks (Qmenu_bar_update_hook); |
8351baf2 | 1445 | FRAME_MENU_BAR_ITEMS (f) = menu_bar_items (FRAME_MENU_BAR_ITEMS (f)); |
538f13d4 | 1446 | /* Redisplay the menu bar in case we changed it. */ |
8f3343d0 | 1447 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
d1e74921 | 1448 | if (FRAME_WINDOW_P (f)) |
d3413a53 | 1449 | set_frame_menubar (f, 0, 0); |
538f13d4 RS |
1450 | else |
1451 | /* On a terminal screen, the menu bar is an ordinary screen | |
1452 | line, and this makes it get updated. */ | |
1453 | w->update_mode_line = Qt; | |
1454 | #else /* ! (USE_X_TOOLKIT || HAVE_NTGUI) */ | |
1455 | /* In the non-toolkit version, the menu bar is an ordinary screen | |
1456 | line, and this makes it get updated. */ | |
1457 | w->update_mode_line = Qt; | |
1458 | #endif /* ! (USE_X_TOOLKIT || HAVE_NTGUI) */ | |
a2725ab2 RS |
1459 | |
1460 | unbind_to (count, Qnil); | |
399164b4 | 1461 | set_buffer_internal_1 (prev); |
90adcf20 RS |
1462 | } |
1463 | } | |
1464 | } | |
1465 | \f | |
a2889657 JB |
1466 | int do_id = 1; |
1467 | ||
90adcf20 RS |
1468 | /* Redisplay WINDOW and its subwindows and siblings. */ |
1469 | ||
a2889657 | 1470 | static void |
e9874cee | 1471 | redisplay_windows (window, preserve_echo_area) |
a2889657 | 1472 | Lisp_Object window; |
e9874cee | 1473 | int preserve_echo_area; |
a2889657 | 1474 | { |
265a9e55 | 1475 | for (; !NILP (window); window = XWINDOW (window)->next) |
e9874cee | 1476 | redisplay_window (window, 0, preserve_echo_area); |
a2889657 JB |
1477 | } |
1478 | ||
1f1ff51d KH |
1479 | /* Return value in display table DP (Lisp_Char_Table *) for character |
1480 | C. Since a display table doesn't have any parent, we don't have to | |
1481 | follow parent. Do not call this function directly but use the | |
1482 | macro DISP_CHAR_VECTOR. */ | |
1483 | Lisp_Object | |
1484 | disp_char_vector (dp, c) | |
1485 | struct Lisp_Char_Table *dp; | |
1486 | int c; | |
1487 | { | |
1488 | int code[4], i; | |
1489 | Lisp_Object val; | |
1490 | ||
1491 | if (SINGLE_BYTE_CHAR_P (c)) return (dp->contents[c]); | |
1492 | ||
1493 | SPLIT_NON_ASCII_CHAR (c, code[0], code[1], code[2]); | |
1494 | if (code[0] != CHARSET_COMPOSITION) | |
1495 | { | |
1496 | if (code[1] < 32) code[1] = -1; | |
1497 | else if (code[2] < 32) code[2] = -1; | |
1498 | } | |
1499 | /* Here, the possible range of CODE[0] (== charset ID) is | |
1500 | 128..MAX_CHARSET. Since the top level char table contains data | |
1501 | for multibyte characters after 256th element, we must increment | |
1502 | CODE[0] by 128 to get a correct index. */ | |
1503 | code[0] += 128; | |
1504 | code[3] = -1; /* anchor */ | |
1505 | ||
1506 | for (i = 0; code[i] >= 0; i++, dp = XCHAR_TABLE (val)) | |
1507 | { | |
1508 | val = dp->contents[code[i]]; | |
1509 | if (!SUB_CHAR_TABLE_P (val)) | |
1510 | return (NILP (val) ? dp->defalt : val); | |
1511 | } | |
1512 | /* Here, VAL is a sub char table. We return the default value of it. */ | |
1513 | return (dp->defalt); | |
1514 | } | |
1515 | ||
90adcf20 RS |
1516 | /* Redisplay window WINDOW and its subwindows. */ |
1517 | ||
a2889657 | 1518 | static void |
e9874cee | 1519 | redisplay_window (window, just_this_one, preserve_echo_area) |
a2889657 | 1520 | Lisp_Object window; |
e9874cee | 1521 | int just_this_one, preserve_echo_area; |
a2889657 JB |
1522 | { |
1523 | register struct window *w = XWINDOW (window); | |
30c566e4 | 1524 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
a2889657 | 1525 | int height; |
ae3b1442 | 1526 | register int lpoint = PT; |
a2889657 | 1527 | struct buffer *old = current_buffer; |
b1d1124b | 1528 | register int width = window_internal_width (w) - 1; |
a2889657 JB |
1529 | register int startp; |
1530 | register int hscroll = XINT (w->hscroll); | |
1531 | struct position pos; | |
ae3b1442 | 1532 | int opoint = PT; |
a2889657 | 1533 | int tem; |
e481f960 | 1534 | int update_mode_line; |
f908610f | 1535 | struct Lisp_Char_Table *dp = window_display_table (w); |
a2889657 | 1536 | |
44fa5b1e | 1537 | if (FRAME_HEIGHT (f) == 0) abort (); /* Some bug zeros some core */ |
a2889657 JB |
1538 | |
1539 | /* If this is a combination window, do its children; that's all. */ | |
1540 | ||
265a9e55 | 1541 | if (!NILP (w->vchild)) |
a2889657 | 1542 | { |
f9c467a3 | 1543 | redisplay_windows (w->vchild, preserve_echo_area); |
a2889657 JB |
1544 | return; |
1545 | } | |
265a9e55 | 1546 | if (!NILP (w->hchild)) |
a2889657 | 1547 | { |
f9c467a3 | 1548 | redisplay_windows (w->hchild, preserve_echo_area); |
a2889657 JB |
1549 | return; |
1550 | } | |
265a9e55 | 1551 | if (NILP (w->buffer)) |
a2889657 | 1552 | abort (); |
8de2d90b JB |
1553 | |
1554 | height = window_internal_height (w); | |
4d641a15 | 1555 | update_mode_line = (!NILP (w->update_mode_line) || update_mode_lines); |
73af359d RS |
1556 | if (XBUFFER (w->buffer)->clip_changed) |
1557 | update_mode_line = 1; | |
8de2d90b JB |
1558 | |
1559 | if (MINI_WINDOW_P (w)) | |
1560 | { | |
73af359d RS |
1561 | if (w == XWINDOW (echo_area_window) && echo_area_glyphs) |
1562 | /* We've already displayed the echo area glyphs in this window. */ | |
1563 | goto finish_scroll_bars; | |
1564 | else if (w != XWINDOW (minibuf_window)) | |
8de2d90b | 1565 | { |
73af359d RS |
1566 | /* This is a minibuffer, but it's not the currently active one, |
1567 | so clear it. */ | |
1568 | int vpos = XFASTINT (w->top); | |
8de2d90b JB |
1569 | int i; |
1570 | ||
1571 | for (i = 0; i < height; i++) | |
1572 | { | |
44fa5b1e | 1573 | get_display_line (f, vpos + i, 0); |
73f194f1 RS |
1574 | display_string (w, vpos + i, "", 0, |
1575 | FRAME_LEFT_SCROLL_BAR_WIDTH (f), | |
1576 | 0, 1, 0, width); | |
8de2d90b JB |
1577 | } |
1578 | ||
88f22aff | 1579 | goto finish_scroll_bars; |
8de2d90b JB |
1580 | } |
1581 | } | |
a2889657 | 1582 | |
a2889657 JB |
1583 | /* Otherwise set up data on this window; select its buffer and point value */ |
1584 | ||
e481f960 | 1585 | if (update_mode_line) |
f72df6ac | 1586 | set_buffer_internal_1 (XBUFFER (w->buffer)); |
e481f960 RS |
1587 | else |
1588 | set_buffer_temp (XBUFFER (w->buffer)); | |
1589 | ||
ae3b1442 | 1590 | opoint = PT; |
a2889657 | 1591 | |
28995e67 RS |
1592 | /* If %c is in mode line, update it if needed. */ |
1593 | if (!NILP (w->column_number_displayed) | |
1594 | /* This alternative quickly identifies a common case | |
1595 | where no change is needed. */ | |
1596 | && !(PT == XFASTINT (w->last_point) | |
8850a573 RS |
1597 | && XFASTINT (w->last_modified) >= MODIFF |
1598 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF) | |
28995e67 RS |
1599 | && XFASTINT (w->column_number_displayed) != current_column ()) |
1600 | update_mode_line = 1; | |
1601 | ||
42640f83 RS |
1602 | /* Count number of windows showing the selected buffer. |
1603 | An indirect buffer counts as its base buffer. */ | |
a2889657 | 1604 | |
42640f83 RS |
1605 | if (!just_this_one) |
1606 | { | |
1607 | struct buffer *current_base, *window_base; | |
1608 | current_base = current_buffer; | |
1609 | window_base = XBUFFER (XWINDOW (selected_window)->buffer); | |
1610 | if (current_base->base_buffer) | |
1611 | current_base = current_base->base_buffer; | |
1612 | if (window_base->base_buffer) | |
1613 | window_base = window_base->base_buffer; | |
1614 | if (current_base == window_base) | |
1615 | buffer_shared++; | |
1616 | } | |
a2889657 JB |
1617 | |
1618 | /* POINT refers normally to the selected window. | |
1619 | For any other window, set up appropriate value. */ | |
1620 | ||
1621 | if (!EQ (window, selected_window)) | |
1622 | { | |
f67a0f51 RS |
1623 | int new_pt = marker_position (w->pointm); |
1624 | if (new_pt < BEGV) | |
a2889657 | 1625 | { |
f67a0f51 RS |
1626 | new_pt = BEGV; |
1627 | Fset_marker (w->pointm, make_number (new_pt), Qnil); | |
a2889657 | 1628 | } |
f67a0f51 | 1629 | else if (new_pt > (ZV - 1)) |
a2889657 | 1630 | { |
f67a0f51 RS |
1631 | new_pt = ZV; |
1632 | Fset_marker (w->pointm, make_number (new_pt), Qnil); | |
a2889657 | 1633 | } |
f67a0f51 RS |
1634 | /* We don't use SET_PT so that the point-motion hooks don't run. */ |
1635 | BUF_PT (current_buffer) = new_pt; | |
a2889657 JB |
1636 | } |
1637 | ||
f4faa47c JB |
1638 | /* If any of the character widths specified in the display table |
1639 | have changed, invalidate the width run cache. It's true that this | |
1640 | may be a bit late to catch such changes, but the rest of | |
1641 | redisplay goes (non-fatally) haywire when the display table is | |
1642 | changed, so why should we worry about doing any better? */ | |
1643 | if (current_buffer->width_run_cache) | |
1644 | { | |
f908610f | 1645 | struct Lisp_Char_Table *disptab = buffer_display_table (); |
f4faa47c JB |
1646 | |
1647 | if (! disptab_matches_widthtab (disptab, | |
1648 | XVECTOR (current_buffer->width_table))) | |
1649 | { | |
1650 | invalidate_region_cache (current_buffer, | |
1651 | current_buffer->width_run_cache, | |
1652 | BEG, Z); | |
1653 | recompute_width_table (current_buffer, disptab); | |
1654 | } | |
1655 | } | |
1656 | ||
a2889657 | 1657 | /* If window-start is screwed up, choose a new one. */ |
a2889657 JB |
1658 | if (XMARKER (w->start)->buffer != current_buffer) |
1659 | goto recenter; | |
1660 | ||
1661 | startp = marker_position (w->start); | |
1662 | ||
cf0df6ab RS |
1663 | /* If someone specified a new starting point but did not insist, |
1664 | check whether it can be used. */ | |
1665 | if (!NILP (w->optional_new_start)) | |
1666 | { | |
1667 | w->optional_new_start = Qnil; | |
1668 | /* Check whether this start pos is usable given where point is. */ | |
1669 | ||
1670 | pos = *compute_motion (startp, 0, | |
1671 | (((EQ (window, minibuf_window) | |
1672 | && startp == BEG) | |
1673 | ? minibuf_prompt_width : 0) | |
1674 | + (hscroll ? 1 - hscroll : 0)), | |
1675 | 0, | |
1c9241f5 KH |
1676 | PT, height, |
1677 | /* BUG FIX: See the comment of | |
1678 | Fpos_visible_in_window_p (window.c). */ | |
1679 | - (1 << (BITS_PER_SHORT - 1)), | |
cf0df6ab RS |
1680 | width, hscroll, pos_tab_offset (w, startp), w); |
1681 | /* If PT does fit on the screen, we will use this start pos, | |
1682 | so do so by setting force_start. */ | |
1683 | if (pos.bufpos == PT) | |
1684 | w->force_start = Qt; | |
1685 | } | |
1686 | ||
8de2d90b | 1687 | /* Handle case where place to start displaying has been specified, |
aa6d10fa | 1688 | unless the specified location is outside the accessible range. */ |
265a9e55 | 1689 | if (!NILP (w->force_start)) |
a2889657 | 1690 | { |
e63574d7 | 1691 | w->force_start = Qnil; |
aa6d10fa RS |
1692 | /* Forget any recorded base line for line number display. */ |
1693 | w->base_line_number = Qnil; | |
75c43375 RS |
1694 | /* Redisplay the mode line. Select the buffer properly for that. |
1695 | Also, run the hook window-scroll-functions | |
1696 | because we have scrolled. */ | |
e63574d7 RS |
1697 | /* Note, we do this after clearing force_start because |
1698 | if there's an error, it is better to forget about force_start | |
1699 | than to get into an infinite loop calling the hook functions | |
1700 | and having them get more errors. */ | |
75c43375 RS |
1701 | if (!update_mode_line |
1702 | || ! NILP (Vwindow_scroll_functions)) | |
e481f960 | 1703 | { |
75c43375 RS |
1704 | Lisp_Object temp[3]; |
1705 | ||
e481f960 | 1706 | set_buffer_temp (old); |
f72df6ac | 1707 | set_buffer_internal_1 (XBUFFER (w->buffer)); |
e481f960 RS |
1708 | update_mode_line = 1; |
1709 | w->update_mode_line = Qt; | |
75c43375 | 1710 | if (! NILP (Vwindow_scroll_functions)) |
3dcd07e3 KH |
1711 | { |
1712 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
1713 | make_number (startp)); | |
1714 | startp = marker_position (w->start); | |
1715 | } | |
e481f960 | 1716 | } |
c2213350 | 1717 | XSETFASTINT (w->last_modified, 0); |
8850a573 | 1718 | XSETFASTINT (w->last_overlay_modified, 0); |
8de2d90b JB |
1719 | if (startp < BEGV) startp = BEGV; |
1720 | if (startp > ZV) startp = ZV; | |
a2889657 JB |
1721 | try_window (window, startp); |
1722 | if (cursor_vpos < 0) | |
1723 | { | |
1724 | /* If point does not appear, move point so it does appear */ | |
1725 | pos = *compute_motion (startp, 0, | |
ca26e1c8 KH |
1726 | (((EQ (window, minibuf_window) |
1727 | && startp == BEG) | |
1728 | ? minibuf_prompt_width : 0) | |
1729 | + (hscroll ? 1 - hscroll : 0)), | |
1730 | 0, | |
1731 | ZV, height / 2, | |
68be917d | 1732 | - (1 << (BITS_PER_SHORT - 1)), |
ca26e1c8 | 1733 | width, hscroll, pos_tab_offset (w, startp), w); |
f67a0f51 | 1734 | BUF_PT (current_buffer) = pos.bufpos; |
90adcf20 | 1735 | if (w != XWINDOW (selected_window)) |
ae3b1442 | 1736 | Fset_marker (w->pointm, make_number (PT), Qnil); |
a2889657 JB |
1737 | else |
1738 | { | |
9d6a6bb9 | 1739 | if (current_buffer == old) |
ae3b1442 | 1740 | lpoint = PT; |
73f194f1 | 1741 | FRAME_CURSOR_X (f) = (WINDOW_LEFT_MARGIN (w) |
210e752f | 1742 | + minmax (0, pos.hpos, width)); |
44fa5b1e | 1743 | FRAME_CURSOR_Y (f) = pos.vpos + XFASTINT (w->top); |
a2889657 | 1744 | } |
df0b5ea1 RS |
1745 | /* If we are highlighting the region, |
1746 | then we just changed the region, so redisplay to show it. */ | |
df0b5ea1 RS |
1747 | if (!NILP (Vtransient_mark_mode) |
1748 | && !NILP (current_buffer->mark_active)) | |
6f27fa9b RS |
1749 | { |
1750 | cancel_my_columns (XWINDOW (window)); | |
1751 | try_window (window, startp); | |
1752 | } | |
a2889657 JB |
1753 | } |
1754 | goto done; | |
1755 | } | |
1756 | ||
1757 | /* Handle case where text has not changed, only point, | |
208aee63 | 1758 | and it has not moved off the frame. */ |
a2889657 JB |
1759 | |
1760 | /* This code is not used for minibuffer for the sake of | |
1761 | the case of redisplaying to replace an echo area message; | |
1762 | since in that case the minibuffer contents per se are usually unchanged. | |
1763 | This code is of no real use in the minibuffer since | |
1764 | the handling of this_line_bufpos, etc., | |
1765 | in redisplay handles the same cases. */ | |
1766 | ||
1767 | if (XFASTINT (w->last_modified) >= MODIFF | |
8850a573 | 1768 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF |
86bee31c | 1769 | && PT >= startp && !current_buffer->clip_changed |
73f194f1 | 1770 | && (just_this_one || WINDOW_FULL_WIDTH_P (w)) |
b1aa6cb3 RS |
1771 | /* If force-mode-line-update was called, really redisplay; |
1772 | that's how redisplay is forced after e.g. changing | |
1773 | buffer-invisibility-spec. */ | |
632ab665 | 1774 | && NILP (w->update_mode_line) |
bd66d1ba RS |
1775 | /* Can't use this case if highlighting a region. */ |
1776 | && !(!NILP (Vtransient_mark_mode) && !NILP (current_buffer->mark_active)) | |
1777 | && NILP (w->region_showing) | |
15495c73 KH |
1778 | /* If end pos is out of date, scroll bar and percentage will be wrong */ |
1779 | && INTEGERP (w->window_end_vpos) | |
1780 | && XFASTINT (w->window_end_vpos) < XFASTINT (w->height) | |
a2889657 JB |
1781 | && !EQ (window, minibuf_window)) |
1782 | { | |
9afd2168 RS |
1783 | int this_scroll_margin = scroll_margin; |
1784 | ||
ca26e1c8 | 1785 | pos = *compute_motion (startp, 0, (hscroll ? 1 - hscroll : 0), 0, |
1c9241f5 KH |
1786 | PT, height, |
1787 | /* BUG FIX: See the comment of | |
1788 | Fpos_visible_in_window_p (window.c). */ | |
1789 | - (1 << (BITS_PER_SHORT - 1)), | |
1790 | width, hscroll, | |
1791 | pos_tab_offset (w, startp), w); | |
a2889657 | 1792 | |
9afd2168 RS |
1793 | /* Don't use a scroll margin that is negative or too large. */ |
1794 | if (this_scroll_margin < 0) | |
1795 | this_scroll_margin = 0; | |
1796 | ||
1797 | if (XINT (w->height) < 4 * scroll_margin) | |
1798 | this_scroll_margin = XINT (w->height) / 4; | |
1799 | ||
1800 | /* If point fits on the screen, and not within the scroll margin, | |
1801 | we are ok. */ | |
1802 | if (pos.vpos < height - this_scroll_margin | |
1803 | && (pos.vpos >= this_scroll_margin || startp == BEGV)) | |
a2889657 | 1804 | { |
44fa5b1e JB |
1805 | /* Ok, point is still on frame */ |
1806 | if (w == XWINDOW (FRAME_SELECTED_WINDOW (f))) | |
a2889657 JB |
1807 | { |
1808 | /* These variables are supposed to be origin 1 */ | |
73f194f1 | 1809 | FRAME_CURSOR_X (f) = (WINDOW_LEFT_MARGIN (w) |
210e752f | 1810 | + minmax (0, pos.hpos, width)); |
44fa5b1e | 1811 | FRAME_CURSOR_Y (f) = pos.vpos + XFASTINT (w->top); |
a2889657 JB |
1812 | } |
1813 | /* This doesn't do the trick, because if a window to the right of | |
1814 | this one must be redisplayed, this does nothing because there | |
44fa5b1e | 1815 | is nothing in DesiredFrame yet, and then the other window is |
a2889657 | 1816 | redisplayed, making likes that are empty in this window's columns. |
73f194f1 | 1817 | if (WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1818 | preserve_my_columns (w); |
1819 | */ | |
1820 | goto done; | |
1821 | } | |
1822 | /* Don't bother trying redisplay with same start; | |
1823 | we already know it will lose */ | |
1824 | } | |
1825 | /* If current starting point was originally the beginning of a line | |
1826 | but no longer is, find a new starting point. */ | |
265a9e55 | 1827 | else if (!NILP (w->start_at_line_beg) |
b16234d8 | 1828 | && !(startp <= BEGV |
1c9241f5 | 1829 | || FETCH_BYTE (startp - 1) == '\n')) |
a2889657 JB |
1830 | { |
1831 | goto recenter; | |
1832 | } | |
1833 | else if (just_this_one && !MINI_WINDOW_P (w) | |
ae3b1442 | 1834 | && PT >= startp |
a2889657 | 1835 | && XFASTINT (w->last_modified) |
14709f21 JB |
1836 | /* or else vmotion on first line won't work. */ |
1837 | && ! NILP (w->start_at_line_beg) | |
a2889657 | 1838 | && ! EQ (w->window_end_valid, Qnil) |
86bee31c | 1839 | && do_id && !current_buffer->clip_changed |
a2889657 | 1840 | && !blank_end_of_window |
73f194f1 | 1841 | && WINDOW_FULL_WIDTH_P (w) |
bd66d1ba RS |
1842 | /* Can't use this case if highlighting a region. */ |
1843 | && !(!NILP (Vtransient_mark_mode) | |
1844 | && !NILP (current_buffer->mark_active)) | |
23c852cb KH |
1845 | /* Don't use try_window_id if newline |
1846 | doesn't display as the end of a line. */ | |
1847 | && !(dp != 0 && VECTORP (DISP_CHAR_VECTOR (dp, '\n'))) | |
bd66d1ba | 1848 | && NILP (w->region_showing) |
a2889657 JB |
1849 | && EQ (last_arrow_position, Voverlay_arrow_position) |
1850 | && EQ (last_arrow_string, Voverlay_arrow_string) | |
44fa5b1e | 1851 | && (tem = try_window_id (FRAME_SELECTED_WINDOW (f))) |
a2889657 JB |
1852 | && tem != -2) |
1853 | { | |
1854 | /* tem > 0 means success. tem == -1 means choose new start. | |
1855 | tem == -2 means try again with same start, | |
1856 | and nothing but whitespace follows the changed stuff. | |
1857 | tem == 0 means try again with same start. */ | |
1858 | if (tem > 0) | |
1859 | goto done; | |
1860 | } | |
1861 | else if (startp >= BEGV && startp <= ZV | |
e9874cee RS |
1862 | && (startp < ZV |
1863 | /* Avoid starting at end of buffer. */ | |
1864 | #if 0 /* This change causes trouble for M-! finger & RET. | |
1865 | It will have to be considered later. */ | |
1866 | || ! EQ (window, selected_window) | |
1867 | /* Don't do the recentering if redisplay | |
1868 | is not for no user action. */ | |
1869 | || preserve_echo_area | |
1870 | #endif | |
1871 | || startp == BEGV | |
8850a573 RS |
1872 | || (XFASTINT (w->last_modified) >= MODIFF |
1873 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF))) | |
a2889657 JB |
1874 | { |
1875 | /* Try to redisplay starting at same place as before */ | |
44fa5b1e | 1876 | /* If point has not moved off frame, accept the results */ |
a2889657 JB |
1877 | try_window (window, startp); |
1878 | if (cursor_vpos >= 0) | |
aa6d10fa | 1879 | { |
28995e67 RS |
1880 | if (!just_this_one || current_buffer->clip_changed |
1881 | || beg_unchanged < startp) | |
aa6d10fa RS |
1882 | /* Forget any recorded base line for line number display. */ |
1883 | w->base_line_number = Qnil; | |
1884 | goto done; | |
1885 | } | |
a2889657 JB |
1886 | else |
1887 | cancel_my_columns (w); | |
1888 | } | |
1889 | ||
c2213350 | 1890 | XSETFASTINT (w->last_modified, 0); |
8850a573 | 1891 | XSETFASTINT (w->last_overlay_modified, 0); |
e481f960 RS |
1892 | /* Redisplay the mode line. Select the buffer properly for that. */ |
1893 | if (!update_mode_line) | |
1894 | { | |
1895 | set_buffer_temp (old); | |
f72df6ac | 1896 | set_buffer_internal_1 (XBUFFER (w->buffer)); |
e481f960 RS |
1897 | update_mode_line = 1; |
1898 | w->update_mode_line = Qt; | |
1899 | } | |
a2889657 JB |
1900 | |
1901 | /* Try to scroll by specified few lines */ | |
1902 | ||
0789adb2 RS |
1903 | if (scroll_conservatively && !current_buffer->clip_changed |
1904 | && startp >= BEGV && startp <= ZV) | |
1905 | { | |
f9c8af06 RS |
1906 | int this_scroll_margin = scroll_margin; |
1907 | ||
1908 | /* Don't use a scroll margin that is negative or too large. */ | |
1909 | if (this_scroll_margin < 0) | |
1910 | this_scroll_margin = 0; | |
1911 | ||
1912 | if (XINT (w->height) < 4 * scroll_margin) | |
1913 | this_scroll_margin = XINT (w->height) / 4; | |
1914 | ||
0789adb2 RS |
1915 | if (PT >= Z - XFASTINT (w->window_end_pos)) |
1916 | { | |
1917 | struct position pos; | |
1918 | pos = *compute_motion (Z - XFASTINT (w->window_end_pos), 0, 0, 0, | |
1919 | PT, XFASTINT (w->height), 0, | |
1920 | XFASTINT (w->width), XFASTINT (w->hscroll), | |
1921 | pos_tab_offset (w, startp), w); | |
1922 | if (pos.vpos > scroll_conservatively) | |
1923 | goto scroll_fail_1; | |
1924 | ||
f9c8af06 | 1925 | pos = *vmotion (startp, pos.vpos + 1 + this_scroll_margin, w); |
0789adb2 RS |
1926 | |
1927 | if (! NILP (Vwindow_scroll_functions)) | |
1928 | { | |
1929 | Fset_marker (w->start, make_number (pos.bufpos), Qnil); | |
1930 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
1931 | make_number (pos.bufpos)); | |
1932 | pos.bufpos = marker_position (w->start); | |
1933 | } | |
1934 | try_window (window, pos.bufpos); | |
1935 | if (cursor_vpos >= 0) | |
1936 | { | |
1937 | if (!just_this_one || current_buffer->clip_changed | |
1938 | || beg_unchanged < startp) | |
1939 | /* Forget any recorded base line for line number display. */ | |
1940 | w->base_line_number = Qnil; | |
1941 | goto done; | |
1942 | } | |
1943 | else | |
1944 | cancel_my_columns (w); | |
1945 | } | |
1946 | if (PT < startp) | |
1947 | { | |
1948 | struct position pos; | |
1949 | pos = *compute_motion (PT, 0, 0, 0, | |
1950 | startp, XFASTINT (w->height), 0, | |
1951 | XFASTINT (w->width), XFASTINT (w->hscroll), | |
1952 | pos_tab_offset (w, startp), w); | |
1953 | if (pos.vpos >= scroll_conservatively) | |
1954 | goto scroll_fail_1; | |
1955 | ||
f9c8af06 | 1956 | pos = *vmotion (startp, - pos.vpos - this_scroll_margin, w); |
0789adb2 RS |
1957 | |
1958 | if (! NILP (Vwindow_scroll_functions)) | |
1959 | { | |
1960 | Fset_marker (w->start, make_number (pos.bufpos), Qnil); | |
1961 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
1962 | make_number (pos.bufpos)); | |
1963 | pos.bufpos = marker_position (w->start); | |
1964 | } | |
1965 | try_window (window, pos.bufpos); | |
1966 | if (cursor_vpos >= 0) | |
1967 | { | |
1968 | if (!just_this_one || current_buffer->clip_changed | |
1969 | || beg_unchanged < startp) | |
1970 | /* Forget any recorded base line for line number display. */ | |
1971 | w->base_line_number = Qnil; | |
1972 | goto done; | |
1973 | } | |
1974 | else | |
1975 | cancel_my_columns (w); | |
1976 | } | |
1977 | scroll_fail_1: ; | |
1978 | } | |
1979 | ||
2c081c2d KH |
1980 | if (scroll_step && !current_buffer->clip_changed |
1981 | && startp >= BEGV && startp <= ZV) | |
a2889657 | 1982 | { |
ae3b1442 | 1983 | if (PT > startp) |
a2889657 | 1984 | { |
210e752f | 1985 | pos = *vmotion (Z - XFASTINT (w->window_end_pos), scroll_step, w); |
a2889657 JB |
1986 | if (pos.vpos >= height) |
1987 | goto scroll_fail; | |
1988 | } | |
1989 | ||
210e752f | 1990 | pos = *vmotion (startp, (PT < startp ? - scroll_step : scroll_step), w); |
a2889657 | 1991 | |
ae3b1442 | 1992 | if (PT >= pos.bufpos) |
a2889657 | 1993 | { |
75c43375 | 1994 | if (! NILP (Vwindow_scroll_functions)) |
3dcd07e3 | 1995 | { |
4a0f786c | 1996 | Fset_marker (w->start, make_number (pos.bufpos), Qnil); |
3dcd07e3 KH |
1997 | run_hook_with_args_2 (Qwindow_scroll_functions, window, |
1998 | make_number (pos.bufpos)); | |
1999 | pos.bufpos = marker_position (w->start); | |
2000 | } | |
a2889657 JB |
2001 | try_window (window, pos.bufpos); |
2002 | if (cursor_vpos >= 0) | |
aa6d10fa | 2003 | { |
28995e67 RS |
2004 | if (!just_this_one || current_buffer->clip_changed |
2005 | || beg_unchanged < startp) | |
aa6d10fa RS |
2006 | /* Forget any recorded base line for line number display. */ |
2007 | w->base_line_number = Qnil; | |
2008 | goto done; | |
2009 | } | |
a2889657 JB |
2010 | else |
2011 | cancel_my_columns (w); | |
2012 | } | |
2013 | scroll_fail: ; | |
2014 | } | |
2015 | ||
2016 | /* Finally, just choose place to start which centers point */ | |
2017 | ||
2018 | recenter: | |
aa6d10fa RS |
2019 | /* Forget any previously recorded base line for line number display. */ |
2020 | w->base_line_number = Qnil; | |
2021 | ||
210e752f | 2022 | pos = *vmotion (PT, - (height / 2), w); |
e63574d7 RS |
2023 | /* Set startp here explicitly in case that helps avoid an infinite loop |
2024 | in case the window-scroll-functions functions get errors. */ | |
208aee63 | 2025 | Fset_marker (w->start, make_number (pos.bufpos), Qnil); |
75c43375 | 2026 | if (! NILP (Vwindow_scroll_functions)) |
3dcd07e3 KH |
2027 | { |
2028 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2029 | make_number (pos.bufpos)); | |
2030 | pos.bufpos = marker_position (w->start); | |
2031 | } | |
a2889657 JB |
2032 | try_window (window, pos.bufpos); |
2033 | ||
2034 | startp = marker_position (w->start); | |
ca26e1c8 | 2035 | w->start_at_line_beg |
1c9241f5 | 2036 | = (startp == BEGV || FETCH_BYTE (startp - 1) == '\n') ? Qt : Qnil; |
a2889657 JB |
2037 | |
2038 | done: | |
e481f960 | 2039 | if ((update_mode_line |
aa6d10fa RS |
2040 | /* If window not full width, must redo its mode line |
2041 | if the window to its side is being redone */ | |
73f194f1 | 2042 | || (!just_this_one && !WINDOW_FULL_WIDTH_P (w)) |
155ef550 KH |
2043 | || INTEGERP (w->base_line_pos) |
2044 | || (!NILP (w->column_number_displayed) | |
2045 | && XFASTINT (w->column_number_displayed) != current_column ())) | |
a2889657 JB |
2046 | && height != XFASTINT (w->height)) |
2047 | display_mode_line (w); | |
aa6d10fa RS |
2048 | if (! line_number_displayed |
2049 | && ! BUFFERP (w->base_line_pos)) | |
2050 | { | |
2051 | w->base_line_pos = Qnil; | |
2052 | w->base_line_number = Qnil; | |
2053 | } | |
a2889657 | 2054 | |
7ce2c095 | 2055 | /* When we reach a frame's selected window, redo the frame's menu bar. */ |
e481f960 | 2056 | if (update_mode_line |
d1e74921 | 2057 | && (FRAME_WINDOW_P (f) |
d3413a53 | 2058 | ? |
dc937613 | 2059 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
d3413a53 | 2060 | FRAME_EXTERNAL_MENU_BAR (f) |
76412d64 | 2061 | #else |
d3413a53 | 2062 | FRAME_MENU_BAR_LINES (f) > 0 |
76412d64 | 2063 | #endif |
d3413a53 | 2064 | : FRAME_MENU_BAR_LINES (f) > 0) |
7ce2c095 RS |
2065 | && EQ (FRAME_SELECTED_WINDOW (f), window)) |
2066 | display_menu_bar (w); | |
2067 | ||
88f22aff JB |
2068 | finish_scroll_bars: |
2069 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
30c566e4 | 2070 | { |
b1d1124b | 2071 | int start, end, whole; |
30c566e4 | 2072 | |
b1d1124b | 2073 | /* Calculate the start and end positions for the current window. |
3505ea70 JB |
2074 | At some point, it would be nice to choose between scrollbars |
2075 | which reflect the whole buffer size, with special markers | |
2076 | indicating narrowing, and scrollbars which reflect only the | |
2077 | visible region. | |
2078 | ||
b1d1124b JB |
2079 | Note that minibuffers sometimes aren't displaying any text. */ |
2080 | if (! MINI_WINDOW_P (w) | |
2081 | || (w == XWINDOW (minibuf_window) && ! echo_area_glyphs)) | |
2082 | { | |
8a9311d7 | 2083 | whole = ZV - BEGV; |
4d641a15 | 2084 | start = marker_position (w->start) - BEGV; |
b1d1124b JB |
2085 | /* I don't think this is guaranteed to be right. For the |
2086 | moment, we'll pretend it is. */ | |
85f26be9 | 2087 | end = (Z - XINT (w->window_end_pos)) - BEGV; |
3505ea70 JB |
2088 | |
2089 | if (end < start) end = start; | |
8a9311d7 | 2090 | if (whole < (end - start)) whole = end - start; |
b1d1124b JB |
2091 | } |
2092 | else | |
2093 | start = end = whole = 0; | |
30c566e4 | 2094 | |
88f22aff | 2095 | /* Indicate what this scroll bar ought to be displaying now. */ |
7eb9ba41 | 2096 | (*set_vertical_scroll_bar_hook) (w, end - start, whole, start); |
30c566e4 | 2097 | |
88f22aff | 2098 | /* Note that we actually used the scroll bar attached to this window, |
30c566e4 | 2099 | so it shouldn't be deleted at the end of redisplay. */ |
88f22aff | 2100 | (*redeem_scroll_bar_hook) (w); |
30c566e4 | 2101 | } |
b1d1124b | 2102 | |
f67a0f51 | 2103 | BUF_PT (current_buffer) = opoint; |
e481f960 | 2104 | if (update_mode_line) |
f72df6ac | 2105 | set_buffer_internal_1 (old); |
e481f960 RS |
2106 | else |
2107 | set_buffer_temp (old); | |
f67a0f51 | 2108 | BUF_PT (current_buffer) = lpoint; |
a2889657 JB |
2109 | } |
2110 | \f | |
2111 | /* Do full redisplay on one window, starting at position `pos'. */ | |
2112 | ||
2113 | static void | |
2114 | try_window (window, pos) | |
2115 | Lisp_Object window; | |
2116 | register int pos; | |
2117 | { | |
2118 | register struct window *w = XWINDOW (window); | |
2119 | register int height = window_internal_height (w); | |
2120 | register int vpos = XFASTINT (w->top); | |
2121 | register int last_text_vpos = vpos; | |
44fa5b1e | 2122 | FRAME_PTR f = XFRAME (w->frame); |
b1d1124b | 2123 | int width = window_internal_width (w) - 1; |
a2889657 JB |
2124 | struct position val; |
2125 | ||
9cbab4ff RS |
2126 | /* POS should never be out of range! */ |
2127 | if (pos < XBUFFER (w->buffer)->begv | |
2128 | || pos > XBUFFER (w->buffer)->zv) | |
2129 | abort (); | |
2130 | ||
a2889657 JB |
2131 | Fset_marker (w->start, make_number (pos), Qnil); |
2132 | cursor_vpos = -1; | |
2133 | overlay_arrow_seen = 0; | |
ca26e1c8 | 2134 | zv_strings_seen = 0; |
a2889657 | 2135 | val.hpos = XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0; |
0f9c0ff0 | 2136 | val.ovstring_chars_done = 0; |
1c9241f5 | 2137 | val.tab_offset = pos_tab_offset (w, pos); |
a2889657 JB |
2138 | |
2139 | while (--height >= 0) | |
2140 | { | |
1c9241f5 | 2141 | val = *display_text_line (w, pos, vpos, val.hpos, val.tab_offset, |
0f9c0ff0 | 2142 | val.ovstring_chars_done); |
1c9241f5 KH |
2143 | /* The following code is omitted because we maintain tab_offset |
2144 | in VAL. */ | |
2145 | #if 0 | |
a2889657 JB |
2146 | tab_offset += width; |
2147 | if (val.vpos) tab_offset = 0; | |
1c9241f5 | 2148 | #endif /* 0 */ |
a2889657 JB |
2149 | vpos++; |
2150 | if (pos != val.bufpos) | |
642eefc6 RS |
2151 | { |
2152 | int invis = 0; | |
e885523c | 2153 | #ifdef USE_TEXT_PROPERTIES |
642eefc6 RS |
2154 | Lisp_Object invis_prop; |
2155 | invis_prop = Fget_char_property (val.bufpos-1, Qinvisible, window); | |
2156 | invis = TEXT_PROP_MEANS_INVISIBLE (invis_prop); | |
e885523c | 2157 | #endif |
642eefc6 RS |
2158 | |
2159 | last_text_vpos | |
2160 | /* Next line, unless prev line ended in end of buffer with no cr */ | |
2161 | = vpos - (val.vpos | |
1c9241f5 | 2162 | && (FETCH_BYTE (val.bufpos - 1) != '\n' || invis)); |
642eefc6 | 2163 | } |
a2889657 JB |
2164 | pos = val.bufpos; |
2165 | } | |
2166 | ||
2167 | /* If last line is continued in middle of character, | |
44fa5b1e | 2168 | include the split character in the text considered on the frame */ |
a2889657 JB |
2169 | if (val.hpos < (XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0)) |
2170 | pos++; | |
2171 | ||
44fa5b1e | 2172 | /* If bottom just moved off end of frame, change mode line percentage. */ |
a2889657 JB |
2173 | if (XFASTINT (w->window_end_pos) == 0 |
2174 | && Z != pos) | |
2175 | w->update_mode_line = Qt; | |
2176 | ||
44fa5b1e | 2177 | /* Say where last char on frame will be, once redisplay is finished. */ |
c2213350 KH |
2178 | XSETFASTINT (w->window_end_pos, Z - pos); |
2179 | XSETFASTINT (w->window_end_vpos, last_text_vpos - XFASTINT (w->top)); | |
a2889657 JB |
2180 | /* But that is not valid info until redisplay finishes. */ |
2181 | w->window_end_valid = Qnil; | |
2182 | } | |
2183 | \f | |
2184 | /* Try to redisplay when buffer is modified locally, | |
2185 | computing insert/delete line to preserve text outside | |
2186 | the bounds of the changes. | |
2187 | Return 1 if successful, 0 if if cannot tell what to do, | |
2188 | or -1 to tell caller to find a new window start, | |
2189 | or -2 to tell caller to do normal redisplay with same window start. */ | |
2190 | ||
2191 | static int | |
2192 | try_window_id (window) | |
2193 | Lisp_Object window; | |
2194 | { | |
2195 | int pos; | |
2196 | register struct window *w = XWINDOW (window); | |
2197 | register int height = window_internal_height (w); | |
44fa5b1e | 2198 | FRAME_PTR f = XFRAME (w->frame); |
a2889657 JB |
2199 | int top = XFASTINT (w->top); |
2200 | int start = marker_position (w->start); | |
b1d1124b | 2201 | int width = window_internal_width (w) - 1; |
a2889657 JB |
2202 | int hscroll = XINT (w->hscroll); |
2203 | int lmargin = hscroll > 0 ? 1 - hscroll : 0; | |
ca26e1c8 | 2204 | int did_motion; |
a2889657 JB |
2205 | register int vpos; |
2206 | register int i, tem; | |
2207 | int last_text_vpos = 0; | |
2208 | int stop_vpos; | |
e24c997d KH |
2209 | int selective = (INTEGERP (current_buffer->selective_display) |
2210 | ? XINT (current_buffer->selective_display) | |
2211 | : !NILP (current_buffer->selective_display) ? -1 : 0); | |
a2889657 JB |
2212 | |
2213 | struct position val, bp, ep, xp, pp; | |
2214 | int scroll_amount = 0; | |
2215 | int delta; | |
1c9241f5 | 2216 | int epto, old_tick; |
a2889657 JB |
2217 | |
2218 | if (GPT - BEG < beg_unchanged) | |
2219 | beg_unchanged = GPT - BEG; | |
2220 | if (Z - GPT < end_unchanged) | |
2221 | end_unchanged = Z - GPT; | |
2222 | ||
6a1dc7ac | 2223 | if (beg_unchanged + BEG < start) |
a2889657 JB |
2224 | return 0; /* Give up if changes go above top of window */ |
2225 | ||
2226 | /* Find position before which nothing is changed. */ | |
ca26e1c8 | 2227 | bp = *compute_motion (start, 0, lmargin, 0, |
1c9241f5 KH |
2228 | min (ZV, beg_unchanged + BEG), height, |
2229 | /* BUG FIX: See the comment of | |
2230 | Fpos_visible_in_window_p() (window.c). */ | |
2231 | - (1 << (BITS_PER_SHORT - 1)), | |
e37f06d7 | 2232 | width, hscroll, pos_tab_offset (w, start), w); |
a2889657 | 2233 | if (bp.vpos >= height) |
6e8290aa | 2234 | { |
632ab665 | 2235 | if (PT < bp.bufpos) |
6e8290aa | 2236 | { |
67481ae5 RS |
2237 | /* All changes are beyond the window end, and point is on the screen. |
2238 | We don't need to change the text at all. | |
6e8290aa JB |
2239 | But we need to update window_end_pos to account for |
2240 | any change in buffer size. */ | |
ca26e1c8 | 2241 | bp = *compute_motion (start, 0, lmargin, 0, |
1c9241f5 KH |
2242 | ZV, height, |
2243 | /* BUG FIX: See the comment of | |
2244 | Fpos_visible_in_window_p() (window.c). */ | |
2245 | - (1 << (BITS_PER_SHORT - 1)), | |
e37f06d7 | 2246 | width, hscroll, pos_tab_offset (w, start), w); |
c2213350 KH |
2247 | XSETFASTINT (w->window_end_vpos, height); |
2248 | XSETFASTINT (w->window_end_pos, Z - bp.bufpos); | |
4d641a15 | 2249 | goto findpoint; |
6e8290aa JB |
2250 | } |
2251 | return 0; | |
2252 | } | |
a2889657 JB |
2253 | |
2254 | vpos = bp.vpos; | |
2255 | ||
44fa5b1e | 2256 | /* Find beginning of that frame line. Must display from there. */ |
210e752f | 2257 | bp = *vmotion (bp.bufpos, 0, w); |
a2889657 JB |
2258 | |
2259 | pos = bp.bufpos; | |
2260 | val.hpos = lmargin; | |
2261 | if (pos < start) | |
2262 | return -1; | |
2263 | ||
ca26e1c8 | 2264 | did_motion = 0; |
a2889657 | 2265 | /* If about to start displaying at the beginning of a continuation line, |
44fa5b1e | 2266 | really start with previous frame line, in case it was not |
a2889657 | 2267 | continued when last redisplayed */ |
05ba02eb JB |
2268 | if ((bp.contin && bp.bufpos - 1 == beg_unchanged && vpos > 0) |
2269 | || | |
2270 | /* Likewise if we have to worry about selective display. */ | |
9f412332 | 2271 | (selective > 0 && bp.bufpos - 1 == beg_unchanged && vpos > 0)) |
a2889657 | 2272 | { |
210e752f | 2273 | bp = *vmotion (bp.bufpos, -1, w); |
a2889657 JB |
2274 | --vpos; |
2275 | pos = bp.bufpos; | |
2276 | } | |
1c9241f5 | 2277 | val.tab_offset = bp.tab_offset; /* Update tab offset. */ |
a2889657 JB |
2278 | |
2279 | if (bp.contin && bp.hpos != lmargin) | |
2280 | { | |
2281 | val.hpos = bp.prevhpos - width + lmargin; | |
1c9241f5 | 2282 | val.tab_offset = bp.tab_offset + bp.prevhpos - width; |
ca26e1c8 | 2283 | did_motion = 1; |
1c9241f5 | 2284 | DEC_POS (pos); |
a2889657 JB |
2285 | } |
2286 | ||
2287 | bp.vpos = vpos; | |
2288 | ||
2289 | /* Find first visible newline after which no more is changed. */ | |
2290 | tem = find_next_newline (Z - max (end_unchanged, Z - ZV), 1); | |
9f412332 KH |
2291 | if (selective > 0) |
2292 | while (tem < ZV - 1 && (indented_beyond_p (tem, selective))) | |
a2889657 JB |
2293 | tem = find_next_newline (tem, 1); |
2294 | ||
2295 | /* Compute the cursor position after that newline. */ | |
ca26e1c8 | 2296 | ep = *compute_motion (pos, vpos, val.hpos, did_motion, tem, |
68be917d | 2297 | height, - (1 << (BITS_PER_SHORT - 1)), |
1c9241f5 KH |
2298 | width, hscroll, |
2299 | /* We have tab offset in VAL, use it. */ | |
2300 | val.tab_offset, w); | |
a2889657 | 2301 | |
44fa5b1e JB |
2302 | /* If changes reach past the text available on the frame, |
2303 | just display rest of frame. */ | |
a2889657 JB |
2304 | if (ep.bufpos > Z - XFASTINT (w->window_end_pos)) |
2305 | stop_vpos = height; | |
2306 | else | |
2307 | stop_vpos = ep.vpos; | |
2308 | ||
2309 | /* If no newline before ep, the line ep is on includes some changes | |
2310 | that must be displayed. Make sure we don't stop before it. */ | |
2311 | /* Also, if changes reach all the way until ep.bufpos, | |
2312 | it is possible that something was deleted after the | |
2313 | newline before it, so the following line must be redrawn. */ | |
2314 | if (stop_vpos == ep.vpos | |
2315 | && (ep.bufpos == BEGV | |
1c9241f5 | 2316 | || FETCH_BYTE (ep.bufpos - 1) != '\n' |
a2889657 JB |
2317 | || ep.bufpos == Z - end_unchanged)) |
2318 | stop_vpos = ep.vpos + 1; | |
2319 | ||
2320 | cursor_vpos = -1; | |
2321 | overlay_arrow_seen = 0; | |
ca26e1c8 | 2322 | zv_strings_seen = 0; |
a2889657 JB |
2323 | |
2324 | /* If changes do not reach to bottom of window, | |
2325 | figure out how much to scroll the rest of the window */ | |
2326 | if (stop_vpos < height) | |
2327 | { | |
2328 | /* Now determine how far up or down the rest of the window has moved */ | |
ca26e1c8 | 2329 | xp = *compute_motion (ep.bufpos, ep.vpos, ep.hpos, 1, |
a2889657 | 2330 | Z - XFASTINT (w->window_end_pos), |
1c9241f5 KH |
2331 | /* Don't care for VPOS... */ |
2332 | 1 << (BITS_PER_SHORT - 1), | |
2333 | /* ... nor HPOS. */ | |
2334 | 1 << (BITS_PER_SHORT - 1), | |
2335 | width, hscroll, ep.tab_offset, w); | |
a2889657 JB |
2336 | scroll_amount = xp.vpos - XFASTINT (w->window_end_vpos); |
2337 | ||
44fa5b1e | 2338 | /* Is everything on frame below the changes whitespace? |
a2889657 JB |
2339 | If so, no scrolling is really necessary. */ |
2340 | for (i = ep.bufpos; i < xp.bufpos; i++) | |
2341 | { | |
1c9241f5 | 2342 | tem = FETCH_BYTE (i); |
a2889657 JB |
2343 | if (tem != ' ' && tem != '\n' && tem != '\t') |
2344 | break; | |
2345 | } | |
2346 | if (i == xp.bufpos) | |
2347 | return -2; | |
2348 | ||
e8e536a9 KH |
2349 | XSETFASTINT (w->window_end_vpos, |
2350 | XFASTINT (w->window_end_vpos) + scroll_amount); | |
a2889657 | 2351 | |
44fa5b1e | 2352 | /* Before doing any scrolling, verify that point will be on frame. */ |
010a899e | 2353 | if (PT > ep.bufpos && !(PT <= xp.bufpos && xp.vpos < height)) |
a2889657 | 2354 | { |
ae3b1442 | 2355 | if (PT <= xp.bufpos) |
a2889657 | 2356 | { |
ca26e1c8 | 2357 | pp = *compute_motion (ep.bufpos, ep.vpos, ep.hpos, 1, |
68be917d | 2358 | PT, height, - (1 << (BITS_PER_SHORT - 1)), |
1c9241f5 KH |
2359 | width, hscroll, |
2360 | /* We have tab offset in EP, use it. */ | |
2361 | ep.tab_offset, w); | |
a2889657 JB |
2362 | } |
2363 | else | |
2364 | { | |
ca26e1c8 | 2365 | pp = *compute_motion (xp.bufpos, xp.vpos, xp.hpos, 1, |
68be917d | 2366 | PT, height, - (1 << (BITS_PER_SHORT - 1)), |
e37f06d7 | 2367 | width, hscroll, |
1c9241f5 KH |
2368 | /* We have tab offset in XP, use it. */ |
2369 | xp.tab_offset, w); | |
a2889657 | 2370 | } |
ae3b1442 | 2371 | if (pp.bufpos < PT || pp.vpos == height) |
a2889657 JB |
2372 | return 0; |
2373 | cursor_vpos = pp.vpos + top; | |
73f194f1 | 2374 | cursor_hpos = WINDOW_LEFT_MARGIN (w) + minmax (0, pp.hpos, width); |
a2889657 JB |
2375 | } |
2376 | ||
2377 | if (stop_vpos - scroll_amount >= height | |
2378 | || ep.bufpos == xp.bufpos) | |
2379 | { | |
2380 | if (scroll_amount < 0) | |
2381 | stop_vpos -= scroll_amount; | |
2382 | scroll_amount = 0; | |
2383 | /* In this path, we have altered window_end_vpos | |
2384 | and not left it negative. | |
2385 | We must make sure that, in case display is preempted | |
44fa5b1e | 2386 | before the frame changes to reflect what we do here, |
a2889657 | 2387 | further updates will not come to try_window_id |
44fa5b1e | 2388 | and assume the frame and window_end_vpos match. */ |
a2889657 JB |
2389 | blank_end_of_window = 1; |
2390 | } | |
2391 | else if (!scroll_amount) | |
0d231165 RS |
2392 | { |
2393 | /* Even if we don't need to scroll, we must adjust the | |
2394 | charstarts of subsequent lines (that we won't redisplay) | |
2395 | according to the amount of text inserted or deleted. */ | |
2396 | int oldpos = FRAME_CURRENT_GLYPHS (f)->charstarts[ep.vpos + top][0]; | |
2397 | int adjust = ep.bufpos - oldpos; | |
2398 | adjust_window_charstarts (w, ep.vpos + top - 1, adjust); | |
2399 | } | |
a2889657 JB |
2400 | else if (bp.bufpos == Z - end_unchanged) |
2401 | { | |
2402 | /* If reprinting everything is nearly as fast as scrolling, | |
2403 | don't bother scrolling. Can happen if lines are short. */ | |
44fa5b1e | 2404 | if (scroll_cost (f, bp.vpos + top - scroll_amount, |
a2889657 JB |
2405 | top + height - max (0, scroll_amount), |
2406 | scroll_amount) | |
2407 | > xp.bufpos - bp.bufpos - 20) | |
2408 | /* Return "try normal display with same window-start." | |
2409 | Too bad we can't prevent further scroll-thinking. */ | |
2410 | return -2; | |
2411 | /* If pure deletion, scroll up as many lines as possible. | |
2412 | In common case of killing a line, this can save the | |
2413 | following line from being overwritten by scrolling | |
2414 | and therefore having to be redrawn. */ | |
44fa5b1e | 2415 | tem = scroll_frame_lines (f, bp.vpos + top - scroll_amount, |
d1cb44a4 RS |
2416 | top + height - max (0, scroll_amount), |
2417 | scroll_amount, bp.bufpos); | |
d2f84654 RS |
2418 | if (!tem) |
2419 | stop_vpos = height; | |
2420 | else | |
2421 | { | |
2422 | /* scroll_frame_lines did not properly adjust subsequent | |
2423 | lines' charstarts in the case where the text of the | |
2424 | screen line at bp.vpos has changed. | |
2425 | (This can happen in a deletion that ends in mid-line.) | |
8e6208c5 KH |
2426 | To adjust properly, we need to make things consistent |
2427 | at the position ep. | |
d2f84654 RS |
2428 | So do a second adjust to make that happen. |
2429 | Note that stop_vpos >= ep.vpos, so it is sufficient | |
2430 | to update the charstarts for lines at ep.vpos and below. */ | |
2431 | int oldstart | |
2432 | = FRAME_CURRENT_GLYPHS (f)->charstarts[ep.vpos + top][0]; | |
2433 | adjust_window_charstarts (w, ep.vpos + top - 1, | |
2434 | ep.bufpos - oldstart); | |
2435 | } | |
a2889657 JB |
2436 | } |
2437 | else if (scroll_amount) | |
2438 | { | |
2439 | /* If reprinting everything is nearly as fast as scrolling, | |
2440 | don't bother scrolling. Can happen if lines are short. */ | |
2441 | /* Note that if scroll_amount > 0, xp.bufpos - bp.bufpos is an | |
2442 | overestimate of cost of reprinting, since xp.bufpos | |
2443 | would end up below the bottom of the window. */ | |
44fa5b1e | 2444 | if (scroll_cost (f, ep.vpos + top - scroll_amount, |
a2889657 JB |
2445 | top + height - max (0, scroll_amount), |
2446 | scroll_amount) | |
2447 | > xp.bufpos - ep.bufpos - 20) | |
2448 | /* Return "try normal display with same window-start." | |
2449 | Too bad we can't prevent further scroll-thinking. */ | |
2450 | return -2; | |
44fa5b1e | 2451 | tem = scroll_frame_lines (f, ep.vpos + top - scroll_amount, |
a2889657 | 2452 | top + height - max (0, scroll_amount), |
d1cb44a4 | 2453 | scroll_amount, ep.bufpos); |
a2889657 JB |
2454 | if (!tem) stop_vpos = height; |
2455 | } | |
2456 | } | |
2457 | ||
2458 | /* In any case, do not display past bottom of window */ | |
2459 | if (stop_vpos >= height) | |
2460 | { | |
2461 | stop_vpos = height; | |
2462 | scroll_amount = 0; | |
2463 | } | |
2464 | ||
2465 | /* Handle case where pos is before w->start -- | |
2466 | can happen if part of line had been clipped and is not clipped now */ | |
2467 | if (vpos == 0 && pos < marker_position (w->start)) | |
2468 | Fset_marker (w->start, make_number (pos), Qnil); | |
2469 | ||
2470 | /* Redisplay the lines where the text was changed */ | |
2471 | last_text_vpos = vpos; | |
1c9241f5 KH |
2472 | /* The following code is omitted because we maintain tab offset in |
2473 | val.tab_offset. */ | |
2474 | #if 0 | |
a2889657 JB |
2475 | tab_offset = pos_tab_offset (w, pos); |
2476 | /* If we are starting display in mid-character, correct tab_offset | |
2477 | to account for passing the line that that character really starts in. */ | |
2478 | if (val.hpos < lmargin) | |
2479 | tab_offset += width; | |
1c9241f5 | 2480 | #endif /* 0 */ |
d3413a53 | 2481 | old_tick = MODIFF; |
a2889657 JB |
2482 | while (vpos < stop_vpos) |
2483 | { | |
1c9241f5 | 2484 | val = *display_text_line (w, pos, top + vpos++, val.hpos, val.tab_offset, |
0f9c0ff0 | 2485 | val.ovstring_chars_done); |
d3413a53 RS |
2486 | /* If display_text_line ran a hook and changed some text, |
2487 | redisplay all the way to bottom of buffer | |
2488 | So that we show the changes. */ | |
2489 | if (old_tick != MODIFF) | |
2490 | stop_vpos = height; | |
1c9241f5 KH |
2491 | /* The following code is omitted because we maintain tab offset |
2492 | in val.tab_offset. */ | |
2493 | #if 0 | |
a2889657 JB |
2494 | tab_offset += width; |
2495 | if (val.vpos) tab_offset = 0; | |
1c9241f5 | 2496 | #endif |
a2889657 JB |
2497 | if (pos != val.bufpos) |
2498 | last_text_vpos | |
2499 | /* Next line, unless prev line ended in end of buffer with no cr */ | |
1c9241f5 | 2500 | = vpos - (val.vpos && FETCH_BYTE (val.bufpos - 1) != '\n'); |
a2889657 JB |
2501 | pos = val.bufpos; |
2502 | } | |
2503 | ||
2504 | /* There are two cases: | |
2505 | 1) we have displayed down to the bottom of the window | |
2506 | 2) we have scrolled lines below stop_vpos by scroll_amount */ | |
2507 | ||
2508 | if (vpos == height) | |
2509 | { | |
2510 | /* If last line is continued in middle of character, | |
44fa5b1e | 2511 | include the split character in the text considered on the frame */ |
a2889657 JB |
2512 | if (val.hpos < lmargin) |
2513 | val.bufpos++; | |
c2213350 KH |
2514 | XSETFASTINT (w->window_end_vpos, last_text_vpos); |
2515 | XSETFASTINT (w->window_end_pos, Z - val.bufpos); | |
a2889657 JB |
2516 | } |
2517 | ||
2518 | /* If scrolling made blank lines at window bottom, | |
2519 | redisplay to fill those lines */ | |
2520 | if (scroll_amount < 0) | |
2521 | { | |
2522 | /* Don't consider these lines for general-purpose scrolling. | |
2523 | That will save time in the scrolling computation. */ | |
44fa5b1e | 2524 | FRAME_SCROLL_BOTTOM_VPOS (f) = xp.vpos; |
a2889657 JB |
2525 | vpos = xp.vpos; |
2526 | pos = xp.bufpos; | |
1c9241f5 KH |
2527 | val.hpos = xp.hpos; |
2528 | val.tab_offset = xp.tab_offset; | |
a2889657 | 2529 | if (pos == ZV) |
010a899e KH |
2530 | { /* Display from next line */ |
2531 | vpos = height + scroll_amount; | |
2532 | val.hpos = lmargin; | |
2533 | val.tab_offset = 0; | |
2534 | } | |
a2889657 JB |
2535 | else if (xp.contin && xp.hpos != lmargin) |
2536 | { | |
2537 | val.hpos = xp.prevhpos - width + lmargin; | |
1c9241f5 KH |
2538 | val.tab_offset = xp.tab_offset + bp.prevhpos - width; |
2539 | DEC_POS (pos); | |
a2889657 JB |
2540 | } |
2541 | ||
2542 | blank_end_of_window = 1; | |
1c9241f5 KH |
2543 | /* The following code is omitted because we maintain tab offset |
2544 | in val.tab_offset. */ | |
2545 | #if 0 | |
a2889657 JB |
2546 | tab_offset = pos_tab_offset (w, pos); |
2547 | /* If we are starting display in mid-character, correct tab_offset | |
2548 | to account for passing the line that that character starts in. */ | |
2549 | if (val.hpos < lmargin) | |
2550 | tab_offset += width; | |
1c9241f5 | 2551 | #endif |
a2889657 JB |
2552 | while (vpos < height) |
2553 | { | |
1c9241f5 KH |
2554 | val = *display_text_line (w, pos, top + vpos++, val.hpos, |
2555 | val.tab_offset, val.ovstring_chars_done); | |
2556 | /* The following code is omitted because we maintain tab | |
2557 | offset in val.tab_offset. */ | |
2558 | #if 0 | |
a2889657 JB |
2559 | tab_offset += width; |
2560 | if (val.vpos) tab_offset = 0; | |
1c9241f5 | 2561 | #endif /* 0 */ |
a2889657 JB |
2562 | pos = val.bufpos; |
2563 | } | |
2564 | ||
2565 | /* Here is a case where display_text_line sets cursor_vpos wrong. | |
2566 | Make it be fixed up, below. */ | |
2567 | if (xp.bufpos == ZV | |
ae3b1442 | 2568 | && xp.bufpos == PT) |
a2889657 JB |
2569 | cursor_vpos = -1; |
2570 | } | |
2571 | ||
44fa5b1e | 2572 | /* If bottom just moved off end of frame, change mode line percentage. */ |
a2889657 JB |
2573 | if (XFASTINT (w->window_end_pos) == 0 |
2574 | && Z != val.bufpos) | |
2575 | w->update_mode_line = Qt; | |
2576 | ||
2577 | /* Attempt to adjust end-of-text positions to new bottom line */ | |
2578 | if (scroll_amount) | |
2579 | { | |
2580 | delta = height - xp.vpos; | |
2581 | if (delta < 0 | |
2582 | || (delta > 0 && xp.bufpos <= ZV) | |
2583 | || (delta == 0 && xp.hpos)) | |
2584 | { | |
210e752f | 2585 | val = *vmotion (Z - XFASTINT (w->window_end_pos), delta, w); |
c2213350 | 2586 | XSETFASTINT (w->window_end_pos, Z - val.bufpos); |
e8e536a9 KH |
2587 | XSETFASTINT (w->window_end_vpos, |
2588 | XFASTINT (w->window_end_vpos) + val.vpos); | |
a2889657 JB |
2589 | } |
2590 | } | |
2591 | ||
2592 | w->window_end_valid = Qnil; | |
2593 | ||
2594 | /* If point was not in a line that was displayed, find it */ | |
2595 | if (cursor_vpos < 0) | |
2596 | { | |
4d641a15 | 2597 | findpoint: |
1c9241f5 KH |
2598 | val = *compute_motion (start, 0, lmargin, 0, PT, |
2599 | /* Don't care for VPOS... */ | |
2600 | 1 << (BITS_PER_SHORT - 1), | |
2601 | /* ... nor HPOS. */ | |
2602 | 1 << (BITS_PER_SHORT - 1), | |
e37f06d7 | 2603 | width, hscroll, pos_tab_offset (w, start), w); |
44fa5b1e | 2604 | /* Admit failure if point is off frame now */ |
a2889657 JB |
2605 | if (val.vpos >= height) |
2606 | { | |
2607 | for (vpos = 0; vpos < height; vpos++) | |
44fa5b1e | 2608 | cancel_line (vpos + top, f); |
a2889657 JB |
2609 | return 0; |
2610 | } | |
2611 | cursor_vpos = val.vpos + top; | |
73f194f1 | 2612 | cursor_hpos = WINDOW_LEFT_MARGIN (w) + minmax (0, val.hpos, width); |
a2889657 JB |
2613 | } |
2614 | ||
210e752f | 2615 | FRAME_CURSOR_X (f) = cursor_hpos; |
44fa5b1e | 2616 | FRAME_CURSOR_Y (f) = cursor_vpos; |
a2889657 JB |
2617 | |
2618 | if (debug_end_pos) | |
2619 | { | |
ca26e1c8 | 2620 | val = *compute_motion (start, 0, lmargin, 0, ZV, |
68be917d | 2621 | height, - (1 << (BITS_PER_SHORT - 1)), |
e37f06d7 | 2622 | width, hscroll, pos_tab_offset (w, start), w); |
a2889657 JB |
2623 | if (val.vpos != XFASTINT (w->window_end_vpos)) |
2624 | abort (); | |
2625 | if (XFASTINT (w->window_end_pos) | |
2626 | != Z - val.bufpos) | |
2627 | abort (); | |
2628 | } | |
2629 | ||
2630 | return 1; | |
2631 | } | |
2632 | \f | |
278feba9 | 2633 | /* Copy LEN glyphs starting address FROM to the rope TO. |
f7430cb6 | 2634 | But don't actually copy the parts that would come in before S. |
278feba9 RS |
2635 | Value is TO, advanced past the copied data. |
2636 | F is the frame we are displaying in. */ | |
a2889657 | 2637 | |
278feba9 RS |
2638 | static GLYPH * |
2639 | copy_part_of_rope (f, to, s, from, len, face) | |
2640 | FRAME_PTR f; | |
2641 | register GLYPH *to; /* Copy to here. */ | |
a2889657 | 2642 | register GLYPH *s; /* Starting point. */ |
278feba9 RS |
2643 | Lisp_Object *from; /* Data to copy. */ |
2644 | int len; | |
1c2250c2 | 2645 | int face; /* Face to apply to glyphs which don't specify one. */ |
a2889657 | 2646 | { |
278feba9 RS |
2647 | int n = len; |
2648 | register Lisp_Object *fp = from; | |
2649 | /* These cache the results of the last call to compute_glyph_face. */ | |
2650 | int last_code = -1; | |
2651 | int last_merged = 0; | |
c581d710 | 2652 | |
87485d6f | 2653 | #ifdef HAVE_FACES |
4cdc65eb KH |
2654 | if (! FRAME_TERMCAP_P (f)) |
2655 | while (n--) | |
2656 | { | |
e57bca5d | 2657 | GLYPH glyph = (INTEGERP (*fp) ? XFASTINT (*fp) : 0); |
4cdc65eb | 2658 | int facecode; |
e57bca5d KH |
2659 | unsigned int c = FAST_GLYPH_CHAR (glyph); |
2660 | ||
2661 | if (c > MAX_CHAR) | |
2662 | /* For an invalid character code, use space. */ | |
2663 | c = ' '; | |
4cdc65eb KH |
2664 | |
2665 | if (FAST_GLYPH_FACE (glyph) == 0) | |
2666 | /* If GLYPH has no face code, use FACE. */ | |
2667 | facecode = face; | |
2668 | else if (FAST_GLYPH_FACE (glyph) == last_code) | |
2669 | /* If it's same as previous glyph, use same result. */ | |
2670 | facecode = last_merged; | |
2671 | else | |
2672 | { | |
2673 | /* Merge this glyph's face and remember the result. */ | |
2674 | last_code = FAST_GLYPH_FACE (glyph); | |
2675 | last_merged = facecode = compute_glyph_face (f, last_code, face); | |
2676 | } | |
b2a76982 | 2677 | |
4cdc65eb | 2678 | if (to >= s) |
e57bca5d | 2679 | *to = FAST_MAKE_GLYPH (c, facecode); |
4cdc65eb KH |
2680 | ++to; |
2681 | ++fp; | |
2682 | } | |
2683 | else | |
2684 | #endif | |
2685 | while (n--) | |
2686 | { | |
dedd1182 | 2687 | if (to >= s) *to = (INTEGERP (*fp) ? XFASTINT (*fp) : 0); |
4cdc65eb KH |
2688 | ++to; |
2689 | ++fp; | |
2690 | } | |
278feba9 | 2691 | return to; |
c581d710 RS |
2692 | } |
2693 | ||
278feba9 RS |
2694 | /* Correct a glyph by replacing its specified user-level face code |
2695 | with a displayable computed face code. */ | |
c581d710 | 2696 | |
278feba9 | 2697 | static GLYPH |
659a218f | 2698 | fix_glyph (f, glyph, cface) |
278feba9 RS |
2699 | FRAME_PTR f; |
2700 | GLYPH glyph; | |
659a218f | 2701 | int cface; |
c581d710 | 2702 | { |
87485d6f | 2703 | #ifdef HAVE_FACES |
659a218f KH |
2704 | if (! FRAME_TERMCAP_P (f)) |
2705 | { | |
2706 | if (FAST_GLYPH_FACE (glyph) != 0) | |
2707 | cface = compute_glyph_face (f, FAST_GLYPH_FACE (glyph), cface); | |
2708 | glyph = FAST_MAKE_GLYPH (FAST_GLYPH_CHAR (glyph), cface); | |
2709 | } | |
4cdc65eb KH |
2710 | #endif |
2711 | return glyph; | |
a2889657 JB |
2712 | } |
2713 | \f | |
f4faa47c JB |
2714 | /* Display one line of window W, starting at position START in W's buffer. |
2715 | ||
2716 | Display starting at horizontal position HPOS, expressed relative to | |
2717 | W's left edge. In situations where the text at START shouldn't | |
2718 | start at the left margin (i.e. when the window is hscrolled, or | |
2719 | we're continuing a line which left off in the midst of a | |
2720 | multi-column character), HPOS should be negative; we throw away | |
2721 | characters up 'til hpos = 0. So, HPOS must take hscrolling into | |
2722 | account. | |
a2889657 JB |
2723 | |
2724 | TABOFFSET is an offset for ostensible hpos, used in tab stop calculations. | |
2725 | ||
0f9c0ff0 RS |
2726 | OVSTR_DONE is the number of chars of overlay before/after strings |
2727 | at this position which have already been processed. | |
2728 | ||
f4faa47c JB |
2729 | Display on position VPOS on the frame. It is origin 0, relative to |
2730 | the top of the frame, not W. | |
a2889657 JB |
2731 | |
2732 | Returns a STRUCT POSITION giving character to start next line with | |
2733 | and where to display it, including a zero or negative hpos. | |
2734 | The vpos field is not really a vpos; it is 1 unless the line is continued */ | |
2735 | ||
2736 | struct position val_display_text_line; | |
2737 | ||
2738 | static struct position * | |
0f9c0ff0 | 2739 | display_text_line (w, start, vpos, hpos, taboffset, ovstr_done) |
a2889657 JB |
2740 | struct window *w; |
2741 | int start; | |
2742 | int vpos; | |
2743 | int hpos; | |
2744 | int taboffset; | |
0f9c0ff0 | 2745 | int ovstr_done; |
a2889657 JB |
2746 | { |
2747 | register int pos = start; | |
2748 | register int c; | |
2749 | register GLYPH *p1; | |
a2889657 JB |
2750 | register int pause; |
2751 | register unsigned char *p; | |
2752 | GLYPH *endp; | |
d2f84654 | 2753 | register GLYPH *leftmargin; |
ca26e1c8 | 2754 | register GLYPH *p1prev; |
efc63ef0 | 2755 | register GLYPH *p1start; |
ca26e1c8 | 2756 | int prevpos; |
efc63ef0 | 2757 | int *charstart; |
44fa5b1e | 2758 | FRAME_PTR f = XFRAME (w->frame); |
a2889657 | 2759 | int tab_width = XINT (current_buffer->tab_width); |
265a9e55 | 2760 | int ctl_arrow = !NILP (current_buffer->ctl_arrow); |
b1d1124b | 2761 | int width = window_internal_width (w) - 1; |
a2889657 JB |
2762 | struct position val; |
2763 | int lastpos; | |
2764 | int invis; | |
642eefc6 RS |
2765 | int last_invis_skip = 0; |
2766 | Lisp_Object last_invis_prop; | |
a2889657 | 2767 | int hscroll = XINT (w->hscroll); |
d2f84654 RS |
2768 | int truncate = (hscroll |
2769 | || (truncate_partial_width_windows | |
73f194f1 | 2770 | && !WINDOW_FULL_WIDTH_P (w)) |
d2f84654 | 2771 | || !NILP (current_buffer->truncate_lines)); |
bd66d1ba RS |
2772 | |
2773 | /* 1 if we should highlight the region. */ | |
2774 | int highlight_region | |
2bf32c5d RS |
2775 | = (!NILP (Vtransient_mark_mode) && !NILP (current_buffer->mark_active) |
2776 | && XWINDOW (current_buffer->last_selected_window) == w); | |
bd66d1ba RS |
2777 | int region_beg, region_end; |
2778 | ||
e24c997d KH |
2779 | int selective = (INTEGERP (current_buffer->selective_display) |
2780 | ? XINT (current_buffer->selective_display) | |
2781 | : !NILP (current_buffer->selective_display) ? -1 : 0); | |
44fa5b1e | 2782 | register struct frame_glyphs *desired_glyphs = FRAME_DESIRED_GLYPHS (f); |
f908610f | 2783 | register struct Lisp_Char_Table *dp = window_display_table (w); |
68a37fa8 RS |
2784 | |
2785 | Lisp_Object default_invis_vector[3]; | |
642eefc6 RS |
2786 | /* Number of characters of ellipsis to display after an invisible line |
2787 | if it calls for an ellipsis. | |
2788 | Note that this value can be nonzero regardless of whether | |
2789 | selective display is enabled--you must check that separately. */ | |
a2889657 | 2790 | int selective_rlen |
642eefc6 | 2791 | = (dp && VECTORP (DISP_INVIS_VECTOR (dp)) |
68a37fa8 | 2792 | ? XVECTOR (DISP_INVIS_VECTOR (dp))->size |
642eefc6 | 2793 | : !NILP (current_buffer->selective_display_ellipses) ? 3 : 0); |
68a37fa8 RS |
2794 | /* This is the sequence of Lisp objects to display |
2795 | when there are invisible lines. */ | |
2796 | Lisp_Object *invis_vector_contents | |
e24c997d | 2797 | = (dp && VECTORP (DISP_INVIS_VECTOR (dp)) |
68a37fa8 RS |
2798 | ? XVECTOR (DISP_INVIS_VECTOR (dp))->contents |
2799 | : default_invis_vector); | |
2800 | ||
e24c997d | 2801 | GLYPH truncator = (dp == 0 || !INTEGERP (DISP_TRUNC_GLYPH (dp)) |
e57bca5d | 2802 | || !GLYPH_CHAR_VALID_P (XINT (DISP_TRUNC_GLYPH (dp))) |
278feba9 | 2803 | ? '$' : XINT (DISP_TRUNC_GLYPH (dp))); |
e24c997d | 2804 | GLYPH continuer = (dp == 0 || !INTEGERP (DISP_CONTINUE_GLYPH (dp)) |
e57bca5d | 2805 | || !GLYPH_CHAR_VALID_P (XINT (DISP_CONTINUE_GLYPH (dp))) |
278feba9 | 2806 | ? '\\' : XINT (DISP_CONTINUE_GLYPH (dp))); |
a2889657 | 2807 | |
1c9241f5 KH |
2808 | /* If 1, we must handle multibyte characters. */ |
2809 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); | |
2810 | /* Length of multibyte form of each character. */ | |
2811 | int len; | |
2812 | /* Glyphs generated should be set this bit mask if text must be | |
2813 | displayed from right to left. */ | |
2814 | GLYPH rev_dir_bit = (NILP (current_buffer->direction_reversed) | |
2815 | ? 0 : GLYPH_MASK_REV_DIR); | |
2816 | ||
31b24551 JB |
2817 | /* The next buffer location at which the face should change, due |
2818 | to overlays or text property changes. */ | |
2819 | int next_face_change; | |
2820 | ||
ca26e1c8 KH |
2821 | /* The next location where the `invisible' property changes, or an |
2822 | overlay starts or ends. */ | |
2823 | int next_boundary; | |
2824 | ||
31b24551 | 2825 | /* The face we're currently using. */ |
1c2250c2 | 2826 | int current_face = 0; |
efc63ef0 | 2827 | int i; |
31b24551 | 2828 | |
c2213350 | 2829 | XSETFASTINT (default_invis_vector[2], '.'); |
68a37fa8 RS |
2830 | default_invis_vector[0] = default_invis_vector[1] = default_invis_vector[2]; |
2831 | ||
73f194f1 RS |
2832 | hpos += WINDOW_LEFT_MARGIN (w); |
2833 | get_display_line (f, vpos, WINDOW_LEFT_MARGIN (w)); | |
54ff581a | 2834 | if (tab_width <= 0 || tab_width > 1000) tab_width = 8; |
a2889657 | 2835 | |
bd66d1ba | 2836 | /* Show where to highlight the region. */ |
1613b757 | 2837 | if (highlight_region && XMARKER (current_buffer->mark)->buffer != 0 |
fba9ce76 RS |
2838 | /* Maybe highlight only in selected window. */ |
2839 | && (highlight_nonselected_windows | |
6f139a45 | 2840 | || w == XWINDOW (selected_window))) |
bd66d1ba RS |
2841 | { |
2842 | region_beg = marker_position (current_buffer->mark); | |
2843 | if (PT < region_beg) | |
2844 | { | |
2845 | region_end = region_beg; | |
2846 | region_beg = PT; | |
2847 | } | |
2848 | else | |
2849 | region_end = PT; | |
2850 | w->region_showing = Qt; | |
2851 | } | |
2852 | else | |
2853 | region_beg = region_end = -1; | |
2854 | ||
f4faa47c | 2855 | if (MINI_WINDOW_P (w) |
ca26e1c8 | 2856 | && start == BEG |
a2889657 JB |
2857 | && vpos == XFASTINT (w->top)) |
2858 | { | |
8c5b6a0a | 2859 | if (! NILP (minibuf_prompt)) |
f7b4b63a KH |
2860 | { |
2861 | minibuf_prompt_width | |
8c5b6a0a KH |
2862 | = (display_string (w, vpos, XSTRING (minibuf_prompt)->data, |
2863 | XSTRING (minibuf_prompt)->size, hpos, | |
ce006f69 RS |
2864 | /* Display a space if we truncate. */ |
2865 | ' ', | |
2866 | 1, -1, | |
2867 | /* Truncate the prompt a little before the | |
2868 | margin, so user input can at least start | |
2869 | on the first line. */ | |
8bb6ca14 KH |
2870 | (XFASTINT (w->width) > 10 |
2871 | ? XFASTINT (w->width) - 4 : -1)) | |
f7b4b63a KH |
2872 | - hpos); |
2873 | hpos += minibuf_prompt_width; | |
2b050fec | 2874 | taboffset -= minibuf_prompt_width; |
f7b4b63a KH |
2875 | } |
2876 | else | |
2877 | minibuf_prompt_width = 0; | |
a2889657 JB |
2878 | } |
2879 | ||
f4faa47c JB |
2880 | /* If we're hscrolled at all, use compute_motion to skip over any |
2881 | text off the left edge of the window. compute_motion may know | |
2882 | tricks to do this faster than we can. */ | |
2883 | if (hpos < 0) | |
2884 | { | |
2885 | struct position *left_edge | |
ca26e1c8 KH |
2886 | = compute_motion (pos, vpos, hpos, 0, |
2887 | ZV, vpos, 0, | |
f4faa47c JB |
2888 | width, hscroll, taboffset, w); |
2889 | ||
2890 | /* Retrieve the buffer position and column provided by | |
2891 | compute_motion. We can't assume that the column will be | |
2892 | zero, because you may have multi-column characters crossing | |
2893 | the left margin. | |
2894 | ||
2895 | compute_motion may have moved us past the screen position we | |
2896 | requested, if we hit a multi-column character, or the end of | |
2897 | the line. If so, back up. */ | |
2898 | if (left_edge->vpos > vpos | |
2899 | || left_edge->hpos > 0) | |
2900 | { | |
1c9241f5 | 2901 | pos = left_edge->bufpos; |
010a899e KH |
2902 | /* Since this should not be a valid multibyte character, we |
2903 | can decrease POS by 1. */ | |
2904 | pos--; | |
f4faa47c JB |
2905 | hpos = left_edge->prevhpos; |
2906 | } | |
2907 | else | |
2908 | { | |
2909 | pos = left_edge->bufpos; | |
2910 | hpos = left_edge->hpos; | |
2911 | } | |
2912 | } | |
2913 | ||
2914 | desired_glyphs->bufp[vpos] = start; | |
a2889657 | 2915 | p1 = desired_glyphs->glyphs[vpos] + hpos; |
efc63ef0 RS |
2916 | p1start = p1; |
2917 | charstart = desired_glyphs->charstarts[vpos] + hpos; | |
2918 | /* In case we don't ever write anything into it... */ | |
73f194f1 RS |
2919 | desired_glyphs->charstarts[vpos][WINDOW_LEFT_MARGIN (w)] = -1; |
2920 | leftmargin = desired_glyphs->glyphs[vpos] + WINDOW_LEFT_MARGIN (w); | |
d2f84654 | 2921 | endp = leftmargin + width; |
a2889657 | 2922 | |
1c2250c2 JB |
2923 | /* Arrange the overlays nicely for our purposes. Usually, we call |
2924 | display_text_line on only one line at a time, in which case this | |
2925 | can't really hurt too much, or we call it on lines which appear | |
2926 | one after another in the buffer, in which case all calls to | |
2927 | recenter_overlay_lists but the first will be pretty cheap. */ | |
2928 | recenter_overlay_lists (current_buffer, pos); | |
2929 | ||
a2889657 JB |
2930 | /* Loop generating characters. |
2931 | Stop at end of buffer, before newline, | |
31b24551 JB |
2932 | if reach or pass continuation column, |
2933 | or at face change. */ | |
a2889657 | 2934 | pause = pos; |
31b24551 | 2935 | next_face_change = pos; |
ca26e1c8 KH |
2936 | next_boundary = pos; |
2937 | p1prev = p1; | |
2938 | prevpos = pos; | |
85bcef6c | 2939 | while (1) |
a2889657 | 2940 | { |
31b24551 | 2941 | if (pos >= pause) |
a2889657 | 2942 | { |
67481ae5 RS |
2943 | int e_t_h; |
2944 | ||
ca26e1c8 | 2945 | while (pos == next_boundary) |
a2889657 | 2946 | { |
ca26e1c8 KH |
2947 | Lisp_Object position, limit, prop, ww; |
2948 | ||
2949 | /* Display the overlay strings here, unless we're at ZV | |
2950 | and have already displayed the appropriate strings | |
2951 | on an earlier line. */ | |
2952 | if (pos < ZV || !zv_strings_seen++) | |
2953 | { | |
2954 | int ovlen; | |
b4222ffa | 2955 | unsigned char *ovstr; |
ca26e1c8 | 2956 | ovlen = overlay_strings (pos, w, &ovstr); |
0f9c0ff0 RS |
2957 | |
2958 | if (ovlen > 0) | |
ca26e1c8 | 2959 | { |
0f9c0ff0 RS |
2960 | /* Skip the ones we did in a previous line. */ |
2961 | ovstr += ovstr_done; | |
2962 | ovlen -= ovstr_done; | |
2963 | ||
1c9241f5 | 2964 | while (ovlen > 0) |
0f9c0ff0 | 2965 | { |
1c9241f5 KH |
2966 | int charset, cols; |
2967 | GLYPH g; | |
2968 | ||
2969 | if (multibyte) | |
2970 | { | |
2971 | c = STRING_CHAR_AND_LENGTH (ovstr, ovlen, len); | |
2972 | ovstr += len, ovlen -= len, ovstr_done += len; | |
2973 | charset = CHAR_CHARSET (c); | |
2974 | cols = (charset == CHARSET_COMPOSITION | |
2975 | ? cmpchar_table[COMPOSITE_CHAR_ID (c)]->width | |
2976 | : CHARSET_WIDTH (charset)); | |
2977 | } | |
2978 | else | |
2979 | { | |
2980 | c = *ovstr++, ovlen--, ovstr_done++; | |
2981 | cols = 1; | |
2982 | } | |
2983 | g = MAKE_GLYPH (f, c, current_face) | rev_dir_bit; | |
2984 | while (cols-- > 0) | |
2985 | { | |
2986 | if (p1 >= leftmargin && p1 < endp) | |
2987 | *p1 = g, g |= GLYPH_MASK_PADDING; | |
2988 | p1++; | |
2989 | } | |
0f9c0ff0 RS |
2990 | } |
2991 | /* If we did all the overlay strings | |
2992 | and we have room for text, clear ovstr_done | |
2993 | just for neatness' sake. */ | |
2994 | if (ovlen == 0 && p1 < endp) | |
2995 | ovstr_done = 0; | |
ca26e1c8 KH |
2996 | } |
2997 | } | |
2998 | ||
2999 | /* Did we reach point? Record the cursor location. */ | |
3000 | if (pos == PT && cursor_vpos < 0) | |
3001 | { | |
3002 | cursor_vpos = vpos; | |
3003 | cursor_hpos = p1 - leftmargin; | |
3004 | } | |
3005 | ||
3006 | if (pos >= ZV) | |
3007 | break; | |
a2889657 | 3008 | |
c2213350 | 3009 | XSETFASTINT (position, pos); |
ca26e1c8 KH |
3010 | limit = Fnext_overlay_change (position); |
3011 | #ifdef USE_TEXT_PROPERTIES | |
dfabd9a0 RS |
3012 | /* This is just an estimate to give reasonable |
3013 | performance; nothing should go wrong if it is too small. */ | |
fe3d6921 | 3014 | if (XFASTINT (limit) > pos + 50) |
1c9241f5 KH |
3015 | { |
3016 | int limitpos = pos + 50; | |
3017 | if (limitpos < Z) | |
3018 | INC_POS (limitpos); /* Adjust to character boundary. */ | |
3019 | XSETFASTINT (limit, limitpos); | |
3020 | } | |
ca26e1c8 KH |
3021 | limit = Fnext_single_property_change (position, Qinvisible, |
3022 | Fcurrent_buffer (), limit); | |
3023 | #endif | |
3024 | next_boundary = XFASTINT (limit); | |
3025 | /* if the `invisible' property is set, we can skip to | |
3026 | the next property change. */ | |
3027 | XSETWINDOW (ww, w); | |
3028 | prop = Fget_char_property (position, Qinvisible, ww); | |
642eefc6 | 3029 | if (TEXT_PROP_MEANS_INVISIBLE (prop)) |
dfabd9a0 | 3030 | { |
ca26e1c8 | 3031 | if (pos < PT && next_boundary >= PT) |
dfabd9a0 RS |
3032 | { |
3033 | cursor_vpos = vpos; | |
d2f84654 | 3034 | cursor_hpos = p1 - leftmargin; |
dfabd9a0 | 3035 | } |
ca26e1c8 | 3036 | pos = next_boundary; |
642eefc6 RS |
3037 | last_invis_skip = pos; |
3038 | last_invis_prop = prop; | |
dfabd9a0 | 3039 | } |
b0a0fbda | 3040 | } |
ca26e1c8 KH |
3041 | |
3042 | /* Did we reach point? Record the cursor location. */ | |
3043 | if (pos == PT && cursor_vpos < 0) | |
3044 | { | |
3045 | cursor_vpos = vpos; | |
3046 | cursor_hpos = p1 - leftmargin; | |
3047 | } | |
3048 | ||
3049 | /* Did we hit the end of the visible region of the buffer? | |
3050 | Stop here. */ | |
3051 | if (pos >= ZV) | |
eff87c2c RS |
3052 | { |
3053 | /* Update charstarts for the end of this line. */ | |
3054 | /* Do nothing if off the left edge or at the right edge. */ | |
3055 | if (p1 >= leftmargin && p1 + 1 != endp) | |
3056 | { | |
3057 | int *p2x = &charstart[(p1 < leftmargin | |
3058 | ? leftmargin : p1) | |
3059 | - p1start]; | |
3060 | *p2x++ = pos; | |
3061 | } | |
3062 | break; | |
3063 | } | |
b0a0fbda | 3064 | |
67481ae5 RS |
3065 | /* Figure out where (if at all) the |
3066 | redisplay_end_trigger-hook should run. */ | |
f6fd109b RS |
3067 | if (MARKERP (w->redisplay_end_trigger) |
3068 | && XMARKER (w->redisplay_end_trigger)->buffer != 0) | |
d3413a53 RS |
3069 | e_t_h = marker_position (w->redisplay_end_trigger); |
3070 | else if (INTEGERP (w->redisplay_end_trigger)) | |
3071 | e_t_h = XINT (w->redisplay_end_trigger); | |
67481ae5 RS |
3072 | else |
3073 | e_t_h = ZV; | |
3074 | ||
3075 | /* If we've gone past the place to run a hook, | |
3076 | run the hook. */ | |
3077 | if (pos >= e_t_h && e_t_h != ZV) | |
3078 | { | |
e0bfbde6 RS |
3079 | Lisp_Object args[3]; |
3080 | ||
3081 | args[0] = Qredisplay_end_trigger_functions; | |
3082 | XSETWINDOW (args[1], w); | |
3083 | XSETINT (args[2], e_t_h); | |
e0bfbde6 | 3084 | |
9c49d3d7 KH |
3085 | /* Since we are *trying* to run these functions, |
3086 | don't try to run them again, even if they get an error. */ | |
d3413a53 | 3087 | w->redisplay_end_trigger = Qnil; |
9c49d3d7 KH |
3088 | Frun_hook_with_args (3, args); |
3089 | ||
67481ae5 | 3090 | e_t_h = ZV; |
f6fd109b RS |
3091 | /* Notice if it changed the face of this character. */ |
3092 | next_face_change = pos; | |
67481ae5 RS |
3093 | } |
3094 | ||
f6fd109b RS |
3095 | #ifdef HAVE_FACES |
3096 | /* Did we hit a face change? Figure out what face we should | |
3097 | use now. We also hit this the first time through the | |
3098 | loop, to see what face we should start with. */ | |
ab6ce60e RS |
3099 | if (pos >= next_face_change |
3100 | && (FRAME_WINDOW_P (f) || FRAME_MSDOS_P (f))) | |
1c9241f5 KH |
3101 | { |
3102 | int limit = pos + 50; | |
3103 | ||
3104 | if (limit < Z && !CHAR_HEAD_P (POS_ADDR (limit))) | |
3105 | INC_POS (limit); /* Adjust to character boundary. */ | |
3106 | current_face = compute_char_face (f, w, pos, | |
3107 | region_beg, region_end, | |
3108 | &next_face_change, limit, 0); | |
3109 | } | |
f6fd109b RS |
3110 | #endif |
3111 | ||
67481ae5 RS |
3112 | /* Compute the next place we need to stop |
3113 | and do something special; set PAUSE. */ | |
3114 | ||
ca26e1c8 | 3115 | pause = ZV; |
1c2250c2 | 3116 | |
ca26e1c8 KH |
3117 | if (pos < next_boundary && next_boundary < pause) |
3118 | pause = next_boundary; | |
1c2250c2 JB |
3119 | if (pos < next_face_change && next_face_change < pause) |
3120 | pause = next_face_change; | |
3121 | ||
67481ae5 RS |
3122 | if (e_t_h < pause) |
3123 | pause = e_t_h; | |
3124 | ||
31b24551 JB |
3125 | /* Wouldn't you hate to read the next line to someone over |
3126 | the phone? */ | |
ae3b1442 KH |
3127 | if (pos < PT && PT < pause) |
3128 | pause = PT; | |
a2889657 JB |
3129 | if (pos < GPT && GPT < pause) |
3130 | pause = GPT; | |
3131 | ||
1c9241f5 | 3132 | p = POS_ADDR (pos); |
a2889657 | 3133 | } |
ca26e1c8 | 3134 | |
ca26e1c8 KH |
3135 | if (p1 >= endp) |
3136 | break; | |
3137 | ||
3138 | p1prev = p1; | |
3139 | ||
1c9241f5 KH |
3140 | if (multibyte) |
3141 | /* PAUSE is surely at character boundary. */ | |
3142 | c = STRING_CHAR_AND_LENGTH (p, pause - pos, len), p += len; | |
3143 | else | |
3144 | c = *p++, len = 1; | |
376b0e59 RS |
3145 | /* Let a display table override all standard display methods. */ |
3146 | if (dp != 0 && VECTORP (DISP_CHAR_VECTOR (dp, c))) | |
3147 | { | |
3148 | p1 = copy_part_of_rope (f, p1, leftmargin, | |
3149 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->contents, | |
3150 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->size, | |
1c9241f5 | 3151 | current_face, rev_dir_bit); |
376b0e59 RS |
3152 | } |
3153 | else if (c >= 040 && c < 0177) | |
a2889657 | 3154 | { |
d2f84654 | 3155 | if (p1 >= leftmargin) |
1c9241f5 | 3156 | *p1 = MAKE_GLYPH (f, c, current_face) | rev_dir_bit; |
a2889657 JB |
3157 | p1++; |
3158 | } | |
3159 | else if (c == '\n') | |
3160 | { | |
3161 | invis = 0; | |
642eefc6 RS |
3162 | if (last_invis_skip == pos |
3163 | && TEXT_PROP_MEANS_INVISIBLE_WITH_ELLIPSIS (last_invis_prop)) | |
3164 | invis = 1; | |
ca26e1c8 | 3165 | while (pos + 1 < ZV |
a2889657 | 3166 | && selective > 0 |
9f412332 | 3167 | && indented_beyond_p (pos + 1, selective)) |
a2889657 JB |
3168 | { |
3169 | invis = 1; | |
3170 | pos = find_next_newline (pos + 1, 1); | |
1c9241f5 | 3171 | if (FETCH_BYTE (pos - 1) == '\n') |
a2889657 JB |
3172 | pos--; |
3173 | } | |
d2f84654 | 3174 | if (invis && selective_rlen > 0 && p1 >= leftmargin) |
a2889657 JB |
3175 | { |
3176 | p1 += selective_rlen; | |
d2f84654 | 3177 | if (p1 - leftmargin > width) |
a2889657 | 3178 | p1 = endp; |
278feba9 | 3179 | copy_part_of_rope (f, p1prev, p1prev, invis_vector_contents, |
1c9241f5 | 3180 | (p1 - p1prev), current_face, rev_dir_bit); |
a2889657 | 3181 | } |
87485d6f | 3182 | #ifdef HAVE_FACES |
3c5c35c5 JB |
3183 | /* Draw the face of the newline character as extending all the |
3184 | way to the end of the frame line. */ | |
3185 | if (current_face) | |
1105ff20 KH |
3186 | { |
3187 | if (p1 < leftmargin) | |
3188 | p1 = leftmargin; | |
3189 | while (p1 < endp) | |
1c9241f5 | 3190 | *p1++ = FAST_MAKE_GLYPH (' ', current_face) | rev_dir_bit; |
1105ff20 | 3191 | } |
3c5c35c5 | 3192 | #endif |
545e04f6 KH |
3193 | |
3194 | /* Update charstarts for the newline that ended this line. */ | |
3195 | /* Do nothing here for a char that's entirely off the left edge | |
3196 | or if it starts at the right edge. */ | |
3197 | if (p1 >= leftmargin && p1prev != endp) | |
3198 | { | |
3199 | /* Store the newline's position into charstarts | |
3200 | for the column where the newline starts. | |
3201 | Store -1 for the rest of the glyphs it occupies. */ | |
3202 | int *p2x = &charstart[(p1prev < leftmargin | |
3203 | ? leftmargin : p1prev) | |
3204 | - p1start]; | |
3205 | int *p2 = &charstart[(p1 < endp ? p1 : endp) - p1start]; | |
3206 | ||
3207 | *p2x++ = pos; | |
3208 | while (p2x < p2) | |
3209 | *p2x++ = -1; | |
3210 | } | |
3211 | ||
68a37fa8 | 3212 | break; |
a2889657 JB |
3213 | } |
3214 | else if (c == '\t') | |
3215 | { | |
3216 | do | |
3217 | { | |
d2f84654 | 3218 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 | 3219 | *p1 = MAKE_GLYPH (f, ' ', current_face) | rev_dir_bit; |
a2889657 JB |
3220 | p1++; |
3221 | } | |
d2f84654 | 3222 | while ((p1 - leftmargin + taboffset + hscroll - (hscroll > 0)) |
a2889657 JB |
3223 | % tab_width); |
3224 | } | |
6e8290aa | 3225 | else if (c == Ctl ('M') && selective == -1) |
a2889657 JB |
3226 | { |
3227 | pos = find_next_newline (pos, 1); | |
1c9241f5 | 3228 | if (FETCH_BYTE (pos - 1) == '\n') |
a2889657 JB |
3229 | pos--; |
3230 | if (selective_rlen > 0) | |
3231 | { | |
3232 | p1 += selective_rlen; | |
d2f84654 | 3233 | if (p1 - leftmargin > width) |
a2889657 | 3234 | p1 = endp; |
278feba9 | 3235 | copy_part_of_rope (f, p1prev, p1prev, invis_vector_contents, |
1c9241f5 | 3236 | (p1 - p1prev), current_face, rev_dir_bit); |
a2889657 | 3237 | } |
87485d6f | 3238 | #ifdef HAVE_FACES |
3c5c35c5 JB |
3239 | /* Draw the face of the newline character as extending all the |
3240 | way to the end of the frame line. */ | |
3241 | if (current_face) | |
1105ff20 KH |
3242 | { |
3243 | if (p1 < leftmargin) | |
3244 | p1 = leftmargin; | |
3245 | while (p1 < endp) | |
1c9241f5 | 3246 | *p1++ = FAST_MAKE_GLYPH (' ', current_face) | rev_dir_bit; |
1105ff20 | 3247 | } |
3c5c35c5 | 3248 | #endif |
545e04f6 KH |
3249 | |
3250 | /* Update charstarts for the ^M that ended this line. */ | |
3251 | /* Do nothing here for a char that's entirely off the left edge | |
3252 | or if it starts at the right edge. */ | |
3253 | if (p1 >= leftmargin && p1prev != endp) | |
3254 | { | |
3255 | /* Store the newline's position into charstarts | |
3256 | for the column where the newline starts. | |
3257 | Store -1 for the rest of the glyphs it occupies. */ | |
3258 | int *p2x = &charstart[(p1prev < leftmargin | |
3259 | ? leftmargin : p1prev) | |
3260 | - p1start]; | |
3261 | int *p2 = &charstart[(p1 < endp ? p1 : endp) - p1start]; | |
3262 | ||
3263 | *p2x++ = pos; | |
3264 | while (p2x < p2) | |
3265 | *p2x++ = -1; | |
3266 | } | |
68a37fa8 | 3267 | break; |
a2889657 | 3268 | } |
a2889657 JB |
3269 | else if (c < 0200 && ctl_arrow) |
3270 | { | |
d2f84654 | 3271 | if (p1 >= leftmargin) |
e57bca5d KH |
3272 | *p1 = (fix_glyph |
3273 | (f, (dp && INTEGERP (DISP_CTRL_GLYPH (dp)) | |
3274 | && GLYPH_CHAR_VALID_P (XINT (DISP_CTRL_GLYPH (dp))) | |
3275 | ? XINT (DISP_CTRL_GLYPH (dp)) : '^'), | |
3276 | current_face) | |
1c9241f5 | 3277 | | rev_dir_bit); |
a2889657 | 3278 | p1++; |
d2f84654 | 3279 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 | 3280 | *p1 = MAKE_GLYPH (f, c ^ 0100, current_face) | rev_dir_bit; |
a2889657 JB |
3281 | p1++; |
3282 | } | |
1c9241f5 | 3283 | else if (len == 1) |
a2889657 | 3284 | { |
1c9241f5 | 3285 | /* C is not a multibyte character. */ |
d2f84654 | 3286 | if (p1 >= leftmargin) |
e57bca5d KH |
3287 | *p1 = (fix_glyph |
3288 | (f, (dp && INTEGERP (DISP_ESCAPE_GLYPH (dp)) | |
8bb6ca14 | 3289 | && GLYPH_CHAR_VALID_P (XINT (DISP_ESCAPE_GLYPH (dp))) |
e57bca5d KH |
3290 | ? XINT (DISP_ESCAPE_GLYPH (dp)) : '\\'), |
3291 | current_face) | |
1c9241f5 | 3292 | | rev_dir_bit); |
a2889657 | 3293 | p1++; |
d2f84654 | 3294 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 | 3295 | *p1 = MAKE_GLYPH (f, (c >> 6) + '0', current_face) | rev_dir_bit; |
a2889657 | 3296 | p1++; |
d2f84654 | 3297 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 KH |
3298 | *p1 = (MAKE_GLYPH (f, (7 & (c >> 3)) + '0', current_face) |
3299 | | rev_dir_bit); | |
a2889657 | 3300 | p1++; |
d2f84654 | 3301 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 | 3302 | *p1 = MAKE_GLYPH (f, (7 & c) + '0', current_face) | rev_dir_bit; |
a2889657 JB |
3303 | p1++; |
3304 | } | |
1c9241f5 KH |
3305 | else |
3306 | { | |
3307 | /* C is a multibyte character. */ | |
3308 | int charset = CHAR_CHARSET (c); | |
3309 | int columns = (charset == CHARSET_COMPOSITION | |
3310 | ? cmpchar_table[COMPOSITE_CHAR_ID (c)]->width | |
3311 | : CHARSET_WIDTH (charset)); | |
3312 | GLYPH g = MAKE_GLYPH (f, c, current_face) | rev_dir_bit; | |
3313 | ||
3314 | while (columns--) | |
3315 | { | |
3316 | if (p1 >= leftmargin && p1 < endp) | |
3317 | *p1 = g, g |= GLYPH_MASK_PADDING; | |
3318 | p1++; | |
3319 | } | |
3320 | } | |
31b24551 | 3321 | |
ca26e1c8 | 3322 | prevpos = pos; |
1c9241f5 | 3323 | pos += len; |
545e04f6 KH |
3324 | |
3325 | /* Update charstarts for the character just output. */ | |
3326 | ||
3327 | /* Do nothing here for a char that's entirely off the left edge. */ | |
3328 | if (p1 >= leftmargin) | |
3329 | { | |
3330 | /* Store the char's position into charstarts | |
3331 | for the first glyph occupied by this char. | |
3332 | Store -1 for the rest of the glyphs it occupies. */ | |
3333 | if (p1 != p1prev) | |
3334 | { | |
3335 | int *p2x = &charstart[(p1prev < leftmargin | |
3336 | ? leftmargin : p1prev) | |
3337 | - p1start]; | |
3338 | int *p2 = &charstart[(p1 < endp ? p1 : endp) - p1start]; | |
3339 | ||
3340 | if (p2x < p2) | |
3341 | *p2x++ = prevpos; | |
3342 | while (p2x < p2) | |
3343 | *p2x++ = -1; | |
3344 | } | |
3345 | } | |
a2889657 JB |
3346 | } |
3347 | ||
3348 | val.hpos = - XINT (w->hscroll); | |
3349 | if (val.hpos) | |
3350 | val.hpos++; | |
3351 | ||
3352 | val.vpos = 1; | |
3353 | ||
3354 | lastpos = pos; | |
3355 | ||
efc63ef0 RS |
3356 | /* Store 0 in this charstart line for the positions where |
3357 | there is no character. But do leave what was recorded | |
3358 | for the character that ended the line. */ | |
85bcef6c RS |
3359 | /* Add 1 in the endtest to compensate for the fact that ENDP was |
3360 | made from WIDTH, which is 1 less than the window's actual | |
3361 | internal width. */ | |
a007eef6 RS |
3362 | i = p1 - p1start + 1; |
3363 | if (p1 < leftmargin) | |
3364 | i += leftmargin - p1; | |
3365 | for (; i < endp - p1start + 1; i++) | |
efc63ef0 RS |
3366 | charstart[i] = 0; |
3367 | ||
a2889657 JB |
3368 | /* Handle continuation in middle of a character */ |
3369 | /* by backing up over it */ | |
3370 | if (p1 > endp) | |
3371 | { | |
5fcbb24d JB |
3372 | /* Don't back up if we never actually displayed any text. |
3373 | This occurs when the minibuffer prompt takes up the whole line. */ | |
3374 | if (p1prev) | |
3375 | { | |
1c9241f5 KH |
3376 | /* Start the next line with that same character whose |
3377 | character code is C and the length of multi-byte form is | |
3378 | LEN. */ | |
3379 | pos = prevpos; | |
3380 | ||
3381 | if (len == 1) | |
3382 | /* C is not a multi-byte character. We can break it and | |
3383 | start from the middle column in the next line. So, | |
3384 | adjust VAL.HPOS to skip the columns output on this | |
3385 | line. */ | |
3386 | val.hpos += p1prev - endp; | |
3387 | else | |
3388 | { | |
3389 | /* C is a multibyte character. Since we can't broke it | |
3390 | in the middle, the whole character should be driven | |
3391 | into the next line. */ | |
3392 | /* As the result, the actual columns occupied by the | |
3393 | text on this line is less than WIDTH. VAL.TAB_OFFSET | |
3394 | must be adjusted. */ | |
3395 | taboffset = taboffset + (p1prev - endp); | |
3396 | /* Let's fill unused columns with TRUNCATOR or CONTINUER. */ | |
3397 | { | |
3398 | GLYPH g = fix_glyph (f, truncate ? truncator : continuer, 0); | |
3399 | while (p1prev < endp) | |
3400 | *p1prev++ = g; | |
3401 | } | |
3402 | /* If POINT is at POS, cursor should not on this line. */ | |
3403 | lastpos = pos; | |
3404 | if (PT == pos) | |
3405 | cursor_vpos = -1; | |
3406 | } | |
5fcbb24d JB |
3407 | } |
3408 | ||
a2889657 JB |
3409 | /* Keep in this line everything up to the continuation column. */ |
3410 | p1 = endp; | |
3411 | } | |
3412 | ||
3413 | /* Finish deciding which character to start the next line on, | |
3414 | and what hpos to start it at. | |
3415 | Also set `lastpos' to the last position which counts as "on this line" | |
3416 | for cursor-positioning. */ | |
3417 | ||
3418 | if (pos < ZV) | |
3419 | { | |
1c9241f5 | 3420 | if (FETCH_BYTE (pos) == '\n') |
dd5f6267 KH |
3421 | { |
3422 | /* If stopped due to a newline, start next line after it */ | |
3423 | pos++; | |
1c9241f5 | 3424 | val.tab_offset = 0; |
dd5f6267 KH |
3425 | /* Check again for hidden lines, in case the newline occurred exactly |
3426 | at the right margin. */ | |
3427 | while (pos < ZV && selective > 0 | |
3428 | && indented_beyond_p (pos, selective)) | |
3429 | pos = find_next_newline (pos, 1); | |
3430 | } | |
a2889657 JB |
3431 | else |
3432 | /* Stopped due to right margin of window */ | |
3433 | { | |
3434 | if (truncate) | |
3435 | { | |
278feba9 | 3436 | *p1++ = fix_glyph (f, truncator, 0); |
a2889657 JB |
3437 | /* Truncating => start next line after next newline, |
3438 | and point is on this line if it is before the newline, | |
3439 | and skip none of first char of next line */ | |
dd5f6267 KH |
3440 | do |
3441 | pos = find_next_newline (pos, 1); | |
3442 | while (pos < ZV && selective > 0 | |
3443 | && indented_beyond_p (pos, selective)); | |
a2889657 JB |
3444 | val.hpos = XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0; |
3445 | ||
1c9241f5 KH |
3446 | lastpos = pos - (FETCH_BYTE (pos - 1) == '\n'); |
3447 | val.tab_offset = 0; | |
a2889657 JB |
3448 | } |
3449 | else | |
3450 | { | |
278feba9 | 3451 | *p1++ = fix_glyph (f, continuer, 0); |
a2889657 JB |
3452 | val.vpos = 0; |
3453 | lastpos--; | |
1c9241f5 | 3454 | val.tab_offset = taboffset + width; |
a2889657 JB |
3455 | } |
3456 | } | |
3457 | } | |
1c9241f5 KH |
3458 | else |
3459 | val.tab_offset = 0; | |
a2889657 JB |
3460 | |
3461 | /* If point is at eol or in invisible text at eol, | |
44fa5b1e | 3462 | record its frame location now. */ |
a2889657 | 3463 | |
ae3b1442 | 3464 | if (start <= PT && PT <= lastpos && cursor_vpos < 0) |
a2889657 JB |
3465 | { |
3466 | cursor_vpos = vpos; | |
d2f84654 | 3467 | cursor_hpos = p1 - leftmargin; |
a2889657 JB |
3468 | } |
3469 | ||
3470 | if (cursor_vpos == vpos) | |
3471 | { | |
3472 | if (cursor_hpos < 0) cursor_hpos = 0; | |
3473 | if (cursor_hpos > width) cursor_hpos = width; | |
73f194f1 | 3474 | cursor_hpos += WINDOW_LEFT_MARGIN (w); |
44fa5b1e | 3475 | if (w == XWINDOW (FRAME_SELECTED_WINDOW (f))) |
a2889657 | 3476 | { |
b5bbc9a5 KH |
3477 | if (!(cursor_in_echo_area && FRAME_HAS_MINIBUF_P (f) |
3478 | && EQ (FRAME_MINIBUF_WINDOW (f), minibuf_window))) | |
3479 | { | |
3480 | FRAME_CURSOR_Y (f) = cursor_vpos; | |
3481 | FRAME_CURSOR_X (f) = cursor_hpos; | |
3482 | } | |
a2889657 JB |
3483 | |
3484 | if (w == XWINDOW (selected_window)) | |
3485 | { | |
3486 | /* Line is not continued and did not start | |
3487 | in middle of character */ | |
73f194f1 | 3488 | if ((hpos - WINDOW_LEFT_MARGIN (w) |
a2889657 JB |
3489 | == (XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0)) |
3490 | && val.vpos) | |
3491 | { | |
3492 | this_line_bufpos = start; | |
3493 | this_line_buffer = current_buffer; | |
3494 | this_line_vpos = cursor_vpos; | |
3495 | this_line_start_hpos = hpos; | |
3496 | this_line_endpos = Z - lastpos; | |
3497 | } | |
3498 | else | |
3499 | this_line_bufpos = 0; | |
3500 | } | |
3501 | } | |
3502 | } | |
3503 | ||
3504 | /* If hscroll and line not empty, insert truncation-at-left marker */ | |
3505 | if (hscroll && lastpos != start) | |
3506 | { | |
1c9241f5 KH |
3507 | GLYPH g = fix_glyph (f, truncator, 0); |
3508 | *leftmargin = g; | |
d2f84654 RS |
3509 | if (p1 <= leftmargin) |
3510 | p1 = leftmargin + 1; | |
1c9241f5 KH |
3511 | else /* MULE: it may be a wide-column character */ |
3512 | { | |
3513 | p1prev = leftmargin + 1; | |
3514 | while (p1prev < p1 && *p1prev & GLYPH_MASK_PADDING) | |
3515 | *p1prev++ = g; | |
3516 | } | |
a2889657 JB |
3517 | } |
3518 | ||
73f194f1 | 3519 | if (!WINDOW_RIGHTMOST_P (w)) |
a2889657 JB |
3520 | { |
3521 | endp++; | |
d2f84654 | 3522 | if (p1 < leftmargin) p1 = leftmargin; |
a2889657 | 3523 | while (p1 < endp) *p1++ = SPACEGLYPH; |
b1d1124b | 3524 | |
88f22aff JB |
3525 | /* Don't draw vertical bars if we're using scroll bars. They're |
3526 | covered up by the scroll bars, and it's distracting to see | |
3527 | them when the scroll bar windows are flickering around to be | |
b1d1124b | 3528 | reconfigured. */ |
73f194f1 | 3529 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT (f)) |
75d13c64 KH |
3530 | { |
3531 | int i; | |
3532 | for (i = 0; i < FRAME_SCROLL_BAR_COLS (f); i++) | |
3533 | *p1++ = SPACEGLYPH; | |
3534 | } | |
73f194f1 | 3535 | else if (!FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
75d13c64 | 3536 | *p1++ = (dp && INTEGERP (DISP_BORDER_GLYPH (dp)) |
8bb6ca14 | 3537 | ? XINT (DISP_BORDER_GLYPH (dp)) |
75d13c64 | 3538 | : '|'); |
a2889657 JB |
3539 | } |
3540 | desired_glyphs->used[vpos] = max (desired_glyphs->used[vpos], | |
3541 | p1 - desired_glyphs->glyphs[vpos]); | |
3542 | desired_glyphs->glyphs[vpos][desired_glyphs->used[vpos]] = 0; | |
3543 | ||
3544 | /* If the start of this line is the overlay arrow-position, | |
3545 | then put the arrow string into the display-line. */ | |
3546 | ||
e24c997d | 3547 | if (MARKERP (Voverlay_arrow_position) |
a2889657 JB |
3548 | && current_buffer == XMARKER (Voverlay_arrow_position)->buffer |
3549 | && start == marker_position (Voverlay_arrow_position) | |
e24c997d | 3550 | && STRINGP (Voverlay_arrow_string) |
a2889657 JB |
3551 | && ! overlay_arrow_seen) |
3552 | { | |
3553 | unsigned char *p = XSTRING (Voverlay_arrow_string)->data; | |
3554 | int i; | |
3555 | int len = XSTRING (Voverlay_arrow_string)->size; | |
142be3dd | 3556 | int arrow_end; |
a2889657 | 3557 | |
b1d1124b JB |
3558 | if (len > width) |
3559 | len = width; | |
87485d6f | 3560 | #ifdef HAVE_FACES |
c4628384 RS |
3561 | if (!NULL_INTERVAL_P (XSTRING (Voverlay_arrow_string)->intervals)) |
3562 | { | |
3563 | /* If the arrow string has text props, obey them when displaying. */ | |
3564 | for (i = 0; i < len; i++) | |
3565 | { | |
3566 | int c = p[i]; | |
3567 | Lisp_Object face, ilisp; | |
3568 | int newface; | |
3569 | ||
c2213350 | 3570 | XSETFASTINT (ilisp, i); |
c4628384 RS |
3571 | face = Fget_text_property (ilisp, Qface, Voverlay_arrow_string); |
3572 | newface = compute_glyph_face_1 (f, face, 0); | |
3573 | leftmargin[i] = FAST_MAKE_GLYPH (c, newface); | |
3574 | } | |
3575 | } | |
3576 | else | |
87485d6f | 3577 | #endif /* HAVE_FACES */ |
c4628384 RS |
3578 | { |
3579 | for (i = 0; i < len; i++) | |
3580 | leftmargin[i] = p[i]; | |
3581 | } | |
142be3dd JB |
3582 | |
3583 | /* Bug in SunOS 4.1.1 compiler requires this intermediate variable. */ | |
d2f84654 | 3584 | arrow_end = (leftmargin - desired_glyphs->glyphs[vpos]) + len; |
142be3dd JB |
3585 | if (desired_glyphs->used[vpos] < arrow_end) |
3586 | desired_glyphs->used[vpos] = arrow_end; | |
a2889657 JB |
3587 | |
3588 | overlay_arrow_seen = 1; | |
3589 | } | |
3590 | ||
3591 | val.bufpos = pos; | |
0f9c0ff0 | 3592 | val.ovstring_chars_done = ovstr_done; |
a2889657 JB |
3593 | val_display_text_line = val; |
3594 | return &val_display_text_line; | |
3595 | } | |
3596 | \f | |
7ce2c095 RS |
3597 | /* Redisplay the menu bar in the frame for window W. */ |
3598 | ||
3599 | static void | |
3600 | display_menu_bar (w) | |
3601 | struct window *w; | |
3602 | { | |
3603 | Lisp_Object items, tail; | |
3604 | register int vpos = 0; | |
3605 | register FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
3606 | int maxendcol = FRAME_WIDTH (f); | |
3607 | int hpos = 0; | |
8351baf2 | 3608 | int i; |
7ce2c095 | 3609 | |
dc937613 | 3610 | #ifdef HAVE_NTGUI |
d129c4c2 KH |
3611 | if (!NILP (Vwindow_system)) |
3612 | return; | |
dc937613 RS |
3613 | #endif |
3614 | ||
3615 | #ifdef USE_X_TOOLKIT | |
d3413a53 | 3616 | if (FRAME_X_P (f)) |
7ce2c095 | 3617 | return; |
dc937613 | 3618 | #endif /* USE_X_TOOLKIT */ |
7ce2c095 RS |
3619 | |
3620 | get_display_line (f, vpos, 0); | |
3621 | ||
8351baf2 | 3622 | items = FRAME_MENU_BAR_ITEMS (f); |
469937ac | 3623 | for (i = 0; i < XVECTOR (items)->size; i += 4) |
7ce2c095 | 3624 | { |
8351baf2 RS |
3625 | Lisp_Object pos, string; |
3626 | string = XVECTOR (items)->contents[i + 1]; | |
3627 | if (NILP (string)) | |
3628 | break; | |
2d66ad19 | 3629 | |
469937ac | 3630 | XSETFASTINT (XVECTOR (items)->contents[i + 3], hpos); |
7ce2c095 RS |
3631 | |
3632 | if (hpos < maxendcol) | |
3633 | hpos = display_string (XWINDOW (FRAME_ROOT_WINDOW (f)), vpos, | |
3634 | XSTRING (string)->data, | |
90adcf20 | 3635 | XSTRING (string)->size, |
278feba9 | 3636 | hpos, 0, 0, hpos, maxendcol); |
6b1bbc46 | 3637 | /* Put a space between items. */ |
2d66ad19 RS |
3638 | if (hpos < maxendcol) |
3639 | { | |
6b1bbc46 | 3640 | int hpos1 = hpos + 1; |
278feba9 | 3641 | hpos = display_string (w, vpos, "", 0, hpos, 0, 0, |
2d66ad19 RS |
3642 | min (hpos1, maxendcol), maxendcol); |
3643 | } | |
7ce2c095 RS |
3644 | } |
3645 | ||
3646 | FRAME_DESIRED_GLYPHS (f)->bufp[vpos] = 0; | |
3647 | FRAME_DESIRED_GLYPHS (f)->highlight[vpos] = mode_line_inverse_video; | |
2d66ad19 RS |
3648 | |
3649 | /* Fill out the line with spaces. */ | |
3650 | if (maxendcol > hpos) | |
278feba9 | 3651 | hpos = display_string (w, vpos, "", 0, hpos, 0, 0, maxendcol, maxendcol); |
db6f348c JB |
3652 | |
3653 | /* Clear the rest of the lines allocated to the menu bar. */ | |
3654 | vpos++; | |
3655 | while (vpos < FRAME_MENU_BAR_LINES (f)) | |
3656 | get_display_line (f, vpos++, 0); | |
7ce2c095 RS |
3657 | } |
3658 | \f | |
a2889657 JB |
3659 | /* Display the mode line for window w */ |
3660 | ||
3661 | static void | |
3662 | display_mode_line (w) | |
3663 | struct window *w; | |
3664 | { | |
3665 | register int vpos = XFASTINT (w->height) + XFASTINT (w->top) - 1; | |
73f194f1 RS |
3666 | register int left = WINDOW_LEFT_MARGIN (w); |
3667 | register int right = WINDOW_RIGHT_MARGIN (w); | |
44fa5b1e | 3668 | register FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
a2889657 | 3669 | |
aa6d10fa | 3670 | line_number_displayed = 0; |
155ef550 | 3671 | w->column_number_displayed = Qnil; |
aa6d10fa | 3672 | |
44fa5b1e | 3673 | get_display_line (f, vpos, left); |
03b294dc RS |
3674 | |
3675 | /* Temporarily make frame F's kboard the current kboard | |
3676 | so that kboard-local variables in the mode_line_format | |
3677 | will get the right values. */ | |
3678 | push_frame_kboard (f); | |
3679 | ||
3680 | display_mode_element (w, vpos, left, 0, right, right, | |
3681 | current_buffer->mode_line_format); | |
3682 | ||
3683 | pop_frame_kboard (); | |
3684 | ||
44fa5b1e | 3685 | FRAME_DESIRED_GLYPHS (f)->bufp[vpos] = 0; |
a2889657 | 3686 | |
73f194f1 RS |
3687 | /* Put the mode line in inverse video. |
3688 | Use faces if possible, since that lets us handle | |
3689 | partial-width windows and avoid inverting the scroll bar columns. */ | |
87485d6f | 3690 | #ifdef HAVE_FACES |
73f194f1 | 3691 | if (! FRAME_TERMCAP_P (f) && mode_line_inverse_video) |
d7eb09a0 RS |
3692 | { |
3693 | /* For a partial width window, explicitly set face of each glyph. */ | |
3694 | int i; | |
1c9241f5 | 3695 | unsigned int padding; |
d7eb09a0 RS |
3696 | GLYPH *ptr = FRAME_DESIRED_GLYPHS (f)->glyphs[vpos]; |
3697 | for (i = left; i < right; ++i) | |
1c9241f5 KH |
3698 | { |
3699 | padding = ptr[i] & GLYPH_MASK_PADDING; | |
3700 | ptr[i] = FAST_MAKE_GLYPH (FAST_GLYPH_CHAR (ptr[i]), 1) | padding; | |
3701 | } | |
d7eb09a0 | 3702 | } |
010a899e | 3703 | else |
4cdc65eb | 3704 | #endif |
73f194f1 RS |
3705 | |
3706 | /* Make the mode line inverse video if the entire line | |
3707 | is made of mode lines. | |
3708 | I.e. if this window is full width, | |
3709 | or if it is the child of a full width window | |
3710 | (which implies that that window is split side-by-side | |
3711 | and the rest of this line is mode lines of the sibling windows). */ | |
010a899e KH |
3712 | if (WINDOW_FULL_WIDTH_P (w) |
3713 | || WINDOW_FULL_WIDTH_P (XWINDOW (w->parent))) | |
73f194f1 | 3714 | FRAME_DESIRED_GLYPHS (f)->highlight[vpos] = mode_line_inverse_video; |
a2889657 JB |
3715 | } |
3716 | ||
3717 | /* Contribute ELT to the mode line for window W. | |
3718 | How it translates into text depends on its data type. | |
3719 | ||
3720 | VPOS is the position of the mode line being displayed. | |
3721 | ||
44fa5b1e | 3722 | HPOS is the position (absolute on frame) where this element's text |
a2889657 JB |
3723 | should start. The output is truncated automatically at the right |
3724 | edge of window W. | |
3725 | ||
3726 | DEPTH is the depth in recursion. It is used to prevent | |
3727 | infinite recursion here. | |
3728 | ||
3729 | MINENDCOL is the hpos before which the element may not end. | |
3730 | The element is padded at the right with spaces if nec | |
3731 | to reach this column. | |
3732 | ||
3733 | MAXENDCOL is the hpos past which this element may not extend. | |
3734 | If MINENDCOL is > MAXENDCOL, MINENDCOL takes priority. | |
3735 | (This is necessary to make nested padding and truncation work.) | |
3736 | ||
3737 | Returns the hpos of the end of the text generated by ELT. | |
3738 | The next element will receive that value as its HPOS arg, | |
3739 | so as to concatenate the elements. */ | |
3740 | ||
3741 | static int | |
3742 | display_mode_element (w, vpos, hpos, depth, minendcol, maxendcol, elt) | |
3743 | struct window *w; | |
3744 | register int vpos, hpos; | |
3745 | int depth; | |
3746 | int minendcol; | |
3747 | register int maxendcol; | |
3748 | register Lisp_Object elt; | |
3749 | { | |
3750 | tail_recurse: | |
3751 | if (depth > 10) | |
3752 | goto invalid; | |
3753 | ||
3754 | depth++; | |
3755 | ||
0220c518 | 3756 | switch (SWITCH_ENUM_CAST (XTYPE (elt))) |
a2889657 JB |
3757 | { |
3758 | case Lisp_String: | |
3759 | { | |
3760 | /* A string: output it and check for %-constructs within it. */ | |
3761 | register unsigned char c; | |
3762 | register unsigned char *this = XSTRING (elt)->data; | |
3763 | ||
3764 | while (hpos < maxendcol && *this) | |
3765 | { | |
3766 | unsigned char *last = this; | |
3767 | while ((c = *this++) != '\0' && c != '%') | |
3768 | ; | |
3769 | if (this - 1 != last) | |
3770 | { | |
3771 | register int lim = --this - last + hpos; | |
d39b6696 KH |
3772 | if (frame_title_ptr) |
3773 | hpos = store_frame_title (last, hpos, min (lim, maxendcol)); | |
3774 | else | |
3775 | hpos = display_string (w, vpos, last, -1, hpos, 0, 1, | |
3776 | hpos, min (lim, maxendcol)); | |
a2889657 JB |
3777 | } |
3778 | else /* c == '%' */ | |
3779 | { | |
766525bc | 3780 | register int minendcol; |
a2889657 JB |
3781 | register int spec_width = 0; |
3782 | ||
3783 | /* We can't allow -ve args due to the "%-" construct */ | |
3784 | /* Argument specifies minwidth but not maxwidth | |
3785 | (maxwidth can be specified by | |
3786 | (<negative-number> . <stuff>) mode-line elements) */ | |
3787 | ||
3788 | while ((c = *this++) >= '0' && c <= '9') | |
3789 | { | |
3790 | spec_width = spec_width * 10 + (c - '0'); | |
3791 | } | |
3792 | ||
766525bc RS |
3793 | minendcol = hpos + spec_width; |
3794 | if (minendcol > maxendcol) | |
3795 | { | |
3796 | spec_width = maxendcol - hpos; | |
3797 | minendcol = maxendcol; | |
3798 | } | |
a2889657 JB |
3799 | |
3800 | if (c == 'M') | |
3801 | hpos = display_mode_element (w, vpos, hpos, depth, | |
3802 | spec_width, maxendcol, | |
3803 | Vglobal_mode_string); | |
3804 | else if (c != 0) | |
d39b6696 | 3805 | { |
766525bc RS |
3806 | char *spec = decode_mode_spec (w, c, spec_width, |
3807 | maxendcol - hpos); | |
d39b6696 | 3808 | if (frame_title_ptr) |
766525bc | 3809 | hpos = store_frame_title (spec, minendcol, maxendcol); |
d39b6696 KH |
3810 | else |
3811 | hpos = display_string (w, vpos, spec, -1, | |
3812 | hpos, 0, 1, | |
766525bc | 3813 | minendcol, maxendcol); |
d39b6696 | 3814 | } |
a2889657 JB |
3815 | } |
3816 | } | |
3817 | } | |
3818 | break; | |
3819 | ||
3820 | case Lisp_Symbol: | |
3821 | /* A symbol: process the value of the symbol recursively | |
3822 | as if it appeared here directly. Avoid error if symbol void. | |
3823 | Special case: if value of symbol is a string, output the string | |
3824 | literally. */ | |
3825 | { | |
3826 | register Lisp_Object tem; | |
3827 | tem = Fboundp (elt); | |
265a9e55 | 3828 | if (!NILP (tem)) |
a2889657 JB |
3829 | { |
3830 | tem = Fsymbol_value (elt); | |
3831 | /* If value is a string, output that string literally: | |
3832 | don't check for % within it. */ | |
e24c997d | 3833 | if (STRINGP (tem)) |
d39b6696 KH |
3834 | { |
3835 | if (frame_title_ptr) | |
3836 | hpos = store_frame_title (XSTRING (tem)->data, | |
3837 | minendcol, maxendcol); | |
3838 | else | |
3839 | hpos = display_string (w, vpos, XSTRING (tem)->data, | |
3840 | XSTRING (tem)->size, | |
3841 | hpos, 0, 1, minendcol, maxendcol); | |
3842 | } | |
a2889657 JB |
3843 | /* Give up right away for nil or t. */ |
3844 | else if (!EQ (tem, elt)) | |
3845 | { elt = tem; goto tail_recurse; } | |
3846 | } | |
3847 | } | |
3848 | break; | |
3849 | ||
3850 | case Lisp_Cons: | |
3851 | { | |
3852 | register Lisp_Object car, tem; | |
3853 | ||
3854 | /* A cons cell: three distinct cases. | |
3855 | If first element is a string or a cons, process all the elements | |
3856 | and effectively concatenate them. | |
3857 | If first element is a negative number, truncate displaying cdr to | |
3858 | at most that many characters. If positive, pad (with spaces) | |
3859 | to at least that many characters. | |
3860 | If first element is a symbol, process the cadr or caddr recursively | |
3861 | according to whether the symbol's value is non-nil or nil. */ | |
3862 | car = XCONS (elt)->car; | |
e24c997d | 3863 | if (SYMBOLP (car)) |
a2889657 JB |
3864 | { |
3865 | tem = Fboundp (car); | |
3866 | elt = XCONS (elt)->cdr; | |
e24c997d | 3867 | if (!CONSP (elt)) |
a2889657 JB |
3868 | goto invalid; |
3869 | /* elt is now the cdr, and we know it is a cons cell. | |
3870 | Use its car if CAR has a non-nil value. */ | |
265a9e55 | 3871 | if (!NILP (tem)) |
a2889657 JB |
3872 | { |
3873 | tem = Fsymbol_value (car); | |
265a9e55 | 3874 | if (!NILP (tem)) |
a2889657 JB |
3875 | { elt = XCONS (elt)->car; goto tail_recurse; } |
3876 | } | |
3877 | /* Symbol's value is nil (or symbol is unbound) | |
3878 | Get the cddr of the original list | |
3879 | and if possible find the caddr and use that. */ | |
3880 | elt = XCONS (elt)->cdr; | |
265a9e55 | 3881 | if (NILP (elt)) |
a2889657 | 3882 | break; |
e24c997d | 3883 | else if (!CONSP (elt)) |
a2889657 JB |
3884 | goto invalid; |
3885 | elt = XCONS (elt)->car; | |
3886 | goto tail_recurse; | |
3887 | } | |
e24c997d | 3888 | else if (INTEGERP (car)) |
a2889657 JB |
3889 | { |
3890 | register int lim = XINT (car); | |
3891 | elt = XCONS (elt)->cdr; | |
3892 | if (lim < 0) | |
3893 | /* Negative int means reduce maximum width. | |
3894 | DO NOT change MINENDCOL here! | |
3895 | (20 -10 . foo) should truncate foo to 10 col | |
3896 | and then pad to 20. */ | |
3897 | maxendcol = min (maxendcol, hpos - lim); | |
3898 | else if (lim > 0) | |
3899 | { | |
3900 | /* Padding specified. Don't let it be more than | |
3901 | current maximum. */ | |
3902 | lim += hpos; | |
3903 | if (lim > maxendcol) | |
3904 | lim = maxendcol; | |
3905 | /* If that's more padding than already wanted, queue it. | |
3906 | But don't reduce padding already specified even if | |
3907 | that is beyond the current truncation point. */ | |
3908 | if (lim > minendcol) | |
3909 | minendcol = lim; | |
3910 | } | |
3911 | goto tail_recurse; | |
3912 | } | |
e24c997d | 3913 | else if (STRINGP (car) || CONSP (car)) |
a2889657 JB |
3914 | { |
3915 | register int limit = 50; | |
3916 | /* LIMIT is to protect against circular lists. */ | |
e24c997d | 3917 | while (CONSP (elt) && --limit > 0 |
a2889657 JB |
3918 | && hpos < maxendcol) |
3919 | { | |
3920 | hpos = display_mode_element (w, vpos, hpos, depth, | |
3921 | hpos, maxendcol, | |
3922 | XCONS (elt)->car); | |
3923 | elt = XCONS (elt)->cdr; | |
3924 | } | |
3925 | } | |
3926 | } | |
3927 | break; | |
3928 | ||
3929 | default: | |
3930 | invalid: | |
d39b6696 KH |
3931 | if (frame_title_ptr) |
3932 | hpos = store_frame_title ("*invalid*", minendcol, maxendcol); | |
3933 | else | |
3934 | hpos = display_string (w, vpos, "*invalid*", -1, hpos, 0, 1, | |
3935 | minendcol, maxendcol); | |
3936 | return hpos; | |
a2889657 JB |
3937 | } |
3938 | ||
a2889657 | 3939 | if (minendcol > hpos) |
d39b6696 KH |
3940 | if (frame_title_ptr) |
3941 | hpos = store_frame_title ("", minendcol, maxendcol); | |
3942 | else | |
3943 | hpos = display_string (w, vpos, "", 0, hpos, 0, 1, minendcol, maxendcol); | |
a2889657 JB |
3944 | return hpos; |
3945 | } | |
3946 | \f | |
766525bc RS |
3947 | /* Write a null-terminated, right justified decimal representation of |
3948 | the positive integer D to BUF using a minimal field width WIDTH. */ | |
3949 | ||
3950 | static void | |
3951 | pint2str (buf, width, d) | |
3952 | register char *buf; | |
3953 | register int width; | |
3954 | register int d; | |
3955 | { | |
3956 | register char *p = buf; | |
3957 | ||
3958 | if (d <= 0) | |
3959 | *p++ = '0'; | |
3960 | else | |
3961 | while (d > 0) | |
3962 | { | |
3963 | *p++ = d % 10 + '0'; | |
3964 | d /= 10; | |
3965 | } | |
3966 | for (width -= (int) (p - buf); width > 0; --width) *p++ = ' '; | |
3967 | *p-- = '\0'; | |
3968 | while (p > buf) | |
3969 | { | |
3970 | d = *buf; | |
3971 | *buf++ = *p; | |
3972 | *p-- = d; | |
3973 | } | |
3974 | } | |
3975 | ||
1c9241f5 KH |
3976 | /* Set a mnemonic character for CODING_SYSTEM (Lisp symbol) in BUF. |
3977 | If EOL_FLAG is 1, set also a mnemonic character for end-of-line | |
3978 | type of CODING_SYSTEM. Return updated pointer into BUF. */ | |
3979 | ||
3980 | static char * | |
3981 | decode_mode_spec_coding (coding_system, buf, eol_flag) | |
3982 | Lisp_Object coding_system; | |
3983 | register char *buf; | |
3984 | int eol_flag; | |
3985 | { | |
3986 | register Lisp_Object val = coding_system; | |
3987 | ||
3988 | if (NILP (val)) /* Not yet decided. */ | |
3989 | { | |
3990 | *buf++ = '-'; | |
3991 | if (eol_flag) *buf++ = eol_mnemonic_undecided; | |
3992 | } | |
3993 | else | |
3994 | { | |
3995 | while (!NILP (val) && SYMBOLP (val)) | |
3996 | val = Fget (val, Qcoding_system); | |
3997 | *buf++ = XFASTINT (XVECTOR (val)->contents[1]); | |
3998 | if (eol_flag) | |
3999 | { | |
4000 | val = Fget (coding_system, Qeol_type); | |
4001 | ||
4002 | if (NILP (val)) /* Not yet decided. */ | |
4003 | *buf++ = eol_mnemonic_undecided; | |
4004 | else if (VECTORP (val)) /* Not yet decided. */ | |
4005 | *buf++ = eol_mnemonic_undecided; | |
4006 | else /* INTEGERP (val) -- 1:LF, 2:CRLF, 3:CR */ | |
4007 | *buf++ = (XFASTINT (val) == 1 | |
4008 | ? eol_mnemonic_unix | |
4009 | : (XFASTINT (val) == 2 | |
4010 | ? eol_mnemonic_dos : eol_mnemonic_mac)); | |
4011 | } | |
4012 | } | |
4013 | return buf; | |
4014 | } | |
4015 | ||
a2889657 | 4016 | /* Return a string for the output of a mode line %-spec for window W, |
766525bc RS |
4017 | generated by character C. SPEC_WIDTH is the field width when |
4018 | padding to the left (%c, %l). The value returned from this | |
4019 | function will later be truncated to width MAXWIDTH. */ | |
a2889657 | 4020 | |
11e82b76 JB |
4021 | static char lots_of_dashes[] = "--------------------------------------------------------------------------------------------------------------------------------------------"; |
4022 | ||
a2889657 | 4023 | static char * |
766525bc | 4024 | decode_mode_spec (w, c, spec_width, maxwidth) |
a2889657 JB |
4025 | struct window *w; |
4026 | register char c; | |
766525bc | 4027 | register int spec_width; |
a2889657 JB |
4028 | register int maxwidth; |
4029 | { | |
0b67772d | 4030 | Lisp_Object obj; |
44fa5b1e JB |
4031 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
4032 | char *decode_mode_spec_buf = (char *) FRAME_TEMP_GLYPHS (f)->total_contents; | |
d39b6696 | 4033 | struct buffer *b = XBUFFER (w->buffer); |
a2889657 | 4034 | |
0b67772d | 4035 | obj = Qnil; |
44fa5b1e JB |
4036 | if (maxwidth > FRAME_WIDTH (f)) |
4037 | maxwidth = FRAME_WIDTH (f); | |
a2889657 JB |
4038 | |
4039 | switch (c) | |
4040 | { | |
1af9f229 RS |
4041 | case '*': |
4042 | if (!NILP (b->read_only)) | |
4043 | return "%"; | |
4044 | if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
4045 | return "*"; | |
4046 | return "-"; | |
4047 | ||
4048 | case '+': | |
4049 | /* This differs from %* only for a modified read-only buffer. */ | |
4050 | if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
4051 | return "*"; | |
4052 | if (!NILP (b->read_only)) | |
4053 | return "%"; | |
4054 | return "-"; | |
4055 | ||
4056 | case '&': | |
4057 | /* This differs from %* in ignoring read-only-ness. */ | |
4058 | if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
4059 | return "*"; | |
4060 | return "-"; | |
4061 | ||
4062 | case '%': | |
4063 | return "%"; | |
4064 | ||
4065 | case '[': | |
4066 | { | |
4067 | int i; | |
4068 | char *p; | |
4069 | ||
4070 | if (command_loop_level > 5) | |
4071 | return "[[[... "; | |
4072 | p = decode_mode_spec_buf; | |
4073 | for (i = 0; i < command_loop_level; i++) | |
4074 | *p++ = '['; | |
4075 | *p = 0; | |
4076 | return decode_mode_spec_buf; | |
4077 | } | |
4078 | ||
4079 | case ']': | |
4080 | { | |
4081 | int i; | |
4082 | char *p; | |
4083 | ||
4084 | if (command_loop_level > 5) | |
4085 | return " ...]]]"; | |
4086 | p = decode_mode_spec_buf; | |
4087 | for (i = 0; i < command_loop_level; i++) | |
4088 | *p++ = ']'; | |
4089 | *p = 0; | |
4090 | return decode_mode_spec_buf; | |
4091 | } | |
4092 | ||
4093 | case '-': | |
4094 | { | |
4095 | register char *p; | |
4096 | register int i; | |
4097 | ||
4098 | if (maxwidth < sizeof (lots_of_dashes)) | |
4099 | return lots_of_dashes; | |
4100 | else | |
4101 | { | |
4102 | for (p = decode_mode_spec_buf, i = maxwidth; i > 0; i--) | |
4103 | *p++ = '-'; | |
4104 | *p = '\0'; | |
4105 | } | |
4106 | return decode_mode_spec_buf; | |
4107 | } | |
4108 | ||
a2889657 | 4109 | case 'b': |
d39b6696 | 4110 | obj = b->name; |
a2889657 JB |
4111 | #if 0 |
4112 | if (maxwidth >= 3 && XSTRING (obj)->size > maxwidth) | |
4113 | { | |
4114 | bcopy (XSTRING (obj)->data, decode_mode_spec_buf, maxwidth - 1); | |
4115 | decode_mode_spec_buf[maxwidth - 1] = '\\'; | |
4116 | decode_mode_spec_buf[maxwidth] = '\0'; | |
4117 | return decode_mode_spec_buf; | |
4118 | } | |
4119 | #endif | |
4120 | break; | |
4121 | ||
1af9f229 RS |
4122 | case 'c': |
4123 | { | |
4124 | int col = current_column (); | |
4125 | XSETFASTINT (w->column_number_displayed, col); | |
766525bc | 4126 | pint2str (decode_mode_spec_buf, spec_width, col); |
1af9f229 RS |
4127 | return decode_mode_spec_buf; |
4128 | } | |
4129 | ||
4130 | case 'F': | |
4131 | /* %F displays the frame name. */ | |
95184b48 RS |
4132 | if (!NILP (f->title)) |
4133 | return (char *) XSTRING (f->title)->data; | |
fd8ff63d | 4134 | if (f->explicit_name || ! FRAME_WINDOW_P (f)) |
95184b48 | 4135 | return (char *) XSTRING (f->name)->data; |
9c6da96f | 4136 | return "Emacs"; |
1af9f229 | 4137 | |
a2889657 | 4138 | case 'f': |
d39b6696 | 4139 | obj = b->filename; |
a2889657 | 4140 | #if 0 |
265a9e55 | 4141 | if (NILP (obj)) |
a2889657 | 4142 | return "[none]"; |
e24c997d | 4143 | else if (STRINGP (obj) && XSTRING (obj)->size > maxwidth) |
a2889657 JB |
4144 | { |
4145 | bcopy ("...", decode_mode_spec_buf, 3); | |
4146 | bcopy (XSTRING (obj)->data + XSTRING (obj)->size - maxwidth + 3, | |
4147 | decode_mode_spec_buf + 3, maxwidth - 3); | |
4148 | return decode_mode_spec_buf; | |
4149 | } | |
4150 | #endif | |
4151 | break; | |
4152 | ||
aa6d10fa RS |
4153 | case 'l': |
4154 | { | |
4155 | int startpos = marker_position (w->start); | |
4156 | int line, linepos, topline; | |
4157 | int nlines, junk; | |
4158 | Lisp_Object tem; | |
4159 | int height = XFASTINT (w->height); | |
4160 | ||
4161 | /* If we decided that this buffer isn't suitable for line numbers, | |
4162 | don't forget that too fast. */ | |
4163 | if (EQ (w->base_line_pos, w->buffer)) | |
766525bc | 4164 | goto no_value; |
5300fd39 RS |
4165 | /* But do forget it, if the window shows a different buffer now. */ |
4166 | else if (BUFFERP (w->base_line_pos)) | |
4167 | w->base_line_pos = Qnil; | |
aa6d10fa RS |
4168 | |
4169 | /* If the buffer is very big, don't waste time. */ | |
d39b6696 | 4170 | if (BUF_ZV (b) - BUF_BEGV (b) > line_number_display_limit) |
aa6d10fa RS |
4171 | { |
4172 | w->base_line_pos = Qnil; | |
4173 | w->base_line_number = Qnil; | |
766525bc | 4174 | goto no_value; |
aa6d10fa RS |
4175 | } |
4176 | ||
4177 | if (!NILP (w->base_line_number) | |
4178 | && !NILP (w->base_line_pos) | |
4179 | && XFASTINT (w->base_line_pos) <= marker_position (w->start)) | |
4180 | { | |
4181 | line = XFASTINT (w->base_line_number); | |
4182 | linepos = XFASTINT (w->base_line_pos); | |
4183 | } | |
4184 | else | |
4185 | { | |
4186 | line = 1; | |
d39b6696 | 4187 | linepos = BUF_BEGV (b); |
aa6d10fa RS |
4188 | } |
4189 | ||
4190 | /* Count lines from base line to window start position. */ | |
4191 | nlines = display_count_lines (linepos, startpos, startpos, &junk); | |
4192 | ||
4193 | topline = nlines + line; | |
4194 | ||
4195 | /* Determine a new base line, if the old one is too close | |
4196 | or too far away, or if we did not have one. | |
4197 | "Too close" means it's plausible a scroll-down would | |
4198 | go back past it. */ | |
d39b6696 | 4199 | if (startpos == BUF_BEGV (b)) |
aa6d10fa | 4200 | { |
c2213350 KH |
4201 | XSETFASTINT (w->base_line_number, topline); |
4202 | XSETFASTINT (w->base_line_pos, BUF_BEGV (b)); | |
aa6d10fa RS |
4203 | } |
4204 | else if (nlines < height + 25 || nlines > height * 3 + 50 | |
d39b6696 | 4205 | || linepos == BUF_BEGV (b)) |
aa6d10fa | 4206 | { |
d39b6696 | 4207 | int limit = BUF_BEGV (b); |
aa6d10fa RS |
4208 | int position; |
4209 | int distance = (height * 2 + 30) * 200; | |
4210 | ||
4211 | if (startpos - distance > limit) | |
4212 | limit = startpos - distance; | |
4213 | ||
4214 | nlines = display_count_lines (startpos, limit, | |
4215 | -(height * 2 + 30), | |
4216 | &position); | |
4217 | /* If we couldn't find the lines we wanted within | |
4218 | 200 chars per line, | |
4219 | give up on line numbers for this window. */ | |
4220 | if (position == startpos - distance) | |
4221 | { | |
4222 | w->base_line_pos = w->buffer; | |
4223 | w->base_line_number = Qnil; | |
766525bc | 4224 | goto no_value; |
aa6d10fa RS |
4225 | } |
4226 | ||
c2213350 KH |
4227 | XSETFASTINT (w->base_line_number, topline - nlines); |
4228 | XSETFASTINT (w->base_line_pos, position); | |
aa6d10fa RS |
4229 | } |
4230 | ||
4231 | /* Now count lines from the start pos to point. */ | |
4232 | nlines = display_count_lines (startpos, PT, PT, &junk); | |
4233 | ||
4234 | /* Record that we did display the line number. */ | |
4235 | line_number_displayed = 1; | |
4236 | ||
4237 | /* Make the string to show. */ | |
766525bc | 4238 | pint2str (decode_mode_spec_buf, spec_width, topline + nlines); |
aa6d10fa | 4239 | return decode_mode_spec_buf; |
766525bc RS |
4240 | no_value: |
4241 | { | |
4242 | char* p = decode_mode_spec_buf; | |
4243 | for (spec_width -= 2; spec_width > 0; --spec_width) *p++ = ' '; | |
4244 | strcpy (p, "??"); | |
4245 | return decode_mode_spec_buf; | |
4246 | } | |
aa6d10fa RS |
4247 | } |
4248 | break; | |
4249 | ||
a2889657 | 4250 | case 'm': |
d39b6696 | 4251 | obj = b->mode_name; |
a2889657 JB |
4252 | break; |
4253 | ||
4254 | case 'n': | |
d39b6696 | 4255 | if (BUF_BEGV (b) > BUF_BEG (b) || BUF_ZV (b) < BUF_Z (b)) |
a2889657 JB |
4256 | return " Narrow"; |
4257 | break; | |
4258 | ||
a2889657 JB |
4259 | case 'p': |
4260 | { | |
4261 | int pos = marker_position (w->start); | |
d39b6696 | 4262 | int total = BUF_ZV (b) - BUF_BEGV (b); |
a2889657 | 4263 | |
d39b6696 | 4264 | if (XFASTINT (w->window_end_pos) <= BUF_Z (b) - BUF_ZV (b)) |
a2889657 | 4265 | { |
d39b6696 | 4266 | if (pos <= BUF_BEGV (b)) |
a2889657 JB |
4267 | return "All"; |
4268 | else | |
4269 | return "Bottom"; | |
4270 | } | |
d39b6696 | 4271 | else if (pos <= BUF_BEGV (b)) |
a2889657 JB |
4272 | return "Top"; |
4273 | else | |
4274 | { | |
3c7d31b9 RS |
4275 | if (total > 1000000) |
4276 | /* Do it differently for a large value, to avoid overflow. */ | |
4277 | total = ((pos - BUF_BEGV (b)) + (total / 100) - 1) / (total / 100); | |
4278 | else | |
4279 | total = ((pos - BUF_BEGV (b)) * 100 + total - 1) / total; | |
a2889657 JB |
4280 | /* We can't normally display a 3-digit number, |
4281 | so get us a 2-digit number that is close. */ | |
4282 | if (total == 100) | |
4283 | total = 99; | |
4284 | sprintf (decode_mode_spec_buf, "%2d%%", total); | |
4285 | return decode_mode_spec_buf; | |
4286 | } | |
4287 | } | |
4288 | ||
8ffcb79f RS |
4289 | /* Display percentage of size above the bottom of the screen. */ |
4290 | case 'P': | |
4291 | { | |
4292 | int toppos = marker_position (w->start); | |
d39b6696 KH |
4293 | int botpos = BUF_Z (b) - XFASTINT (w->window_end_pos); |
4294 | int total = BUF_ZV (b) - BUF_BEGV (b); | |
8ffcb79f | 4295 | |
d39b6696 | 4296 | if (botpos >= BUF_ZV (b)) |
8ffcb79f | 4297 | { |
d39b6696 | 4298 | if (toppos <= BUF_BEGV (b)) |
8ffcb79f RS |
4299 | return "All"; |
4300 | else | |
4301 | return "Bottom"; | |
4302 | } | |
4303 | else | |
4304 | { | |
3c7d31b9 RS |
4305 | if (total > 1000000) |
4306 | /* Do it differently for a large value, to avoid overflow. */ | |
4307 | total = ((botpos - BUF_BEGV (b)) + (total / 100) - 1) / (total / 100); | |
4308 | else | |
4309 | total = ((botpos - BUF_BEGV (b)) * 100 + total - 1) / total; | |
8ffcb79f RS |
4310 | /* We can't normally display a 3-digit number, |
4311 | so get us a 2-digit number that is close. */ | |
4312 | if (total == 100) | |
4313 | total = 99; | |
d39b6696 | 4314 | if (toppos <= BUF_BEGV (b)) |
8ffcb79f RS |
4315 | sprintf (decode_mode_spec_buf, "Top%2d%%", total); |
4316 | else | |
4317 | sprintf (decode_mode_spec_buf, "%2d%%", total); | |
4318 | return decode_mode_spec_buf; | |
4319 | } | |
4320 | } | |
4321 | ||
1af9f229 RS |
4322 | case 's': |
4323 | /* status of process */ | |
4324 | obj = Fget_buffer_process (w->buffer); | |
4325 | if (NILP (obj)) | |
4326 | return "no process"; | |
4327 | #ifdef subprocesses | |
4328 | obj = Fsymbol_name (Fprocess_status (obj)); | |
4329 | #endif | |
4330 | break; | |
d39b6696 | 4331 | |
1af9f229 RS |
4332 | case 't': /* indicate TEXT or BINARY */ |
4333 | #ifdef MODE_LINE_BINARY_TEXT | |
4334 | return MODE_LINE_BINARY_TEXT (b); | |
4335 | #else | |
4336 | return "T"; | |
4337 | #endif | |
1c9241f5 KH |
4338 | |
4339 | case 'z': | |
4340 | /* coding-system (not including end-of-line format) */ | |
4341 | case 'Z': | |
4342 | /* coding-system (including end-of-line type) */ | |
4343 | { | |
4344 | int eol_flag = (c == 'Z'); | |
4345 | char *p; | |
4346 | ||
4347 | p = decode_mode_spec_coding | |
4348 | (find_symbol_value (Qbuffer_file_coding_system), | |
4349 | decode_mode_spec_buf, eol_flag); | |
4350 | if (FRAME_TERMCAP_P (f)) | |
4351 | { | |
4352 | p = decode_mode_spec_coding (keyboard_coding.symbol, p, eol_flag); | |
4353 | p = decode_mode_spec_coding (terminal_coding.symbol, p, eol_flag); | |
4354 | } | |
4355 | #ifdef subprocesses | |
4356 | obj = Fget_buffer_process (Fcurrent_buffer ()); | |
4357 | if (PROCESSP (obj)) | |
4358 | { | |
4359 | p = decode_mode_spec_coding (XPROCESS (obj)->decode_coding_system, | |
4360 | p, eol_flag); | |
4361 | p = decode_mode_spec_coding (XPROCESS (obj)->encode_coding_system, | |
4362 | p, eol_flag); | |
4363 | } | |
4364 | #endif /* subprocesses */ | |
4365 | *p = 0; | |
4366 | return decode_mode_spec_buf; | |
4367 | } | |
a2889657 | 4368 | } |
d39b6696 | 4369 | |
e24c997d | 4370 | if (STRINGP (obj)) |
a2889657 JB |
4371 | return (char *) XSTRING (obj)->data; |
4372 | else | |
4373 | return ""; | |
4374 | } | |
59b49f63 RS |
4375 | \f |
4376 | /* Search for COUNT instances of a line boundary, which means either a | |
4377 | newline or (if selective display enabled) a carriage return. | |
4378 | Start at START. If COUNT is negative, search backwards. | |
4379 | ||
4380 | If we find COUNT instances, set *SHORTAGE to zero, and return the | |
4381 | position after the COUNTth match. Note that for reverse motion | |
4382 | this is not the same as the usual convention for Emacs motion commands. | |
4383 | ||
4384 | If we don't find COUNT instances before reaching the end of the | |
4385 | buffer (or the beginning, if scanning backwards), set *SHORTAGE to | |
4386 | the number of line boundaries left unfound, and return the end of the | |
4387 | buffer we bumped up against. */ | |
4388 | ||
4389 | static int | |
4390 | display_scan_buffer (start, count, shortage) | |
4391 | int *shortage, start; | |
4392 | register int count; | |
4393 | { | |
4394 | int limit = ((count > 0) ? ZV - 1 : BEGV); | |
4395 | int direction = ((count > 0) ? 1 : -1); | |
4396 | ||
4397 | register unsigned char *cursor; | |
4398 | unsigned char *base; | |
4399 | ||
4400 | register int ceiling; | |
4401 | register unsigned char *ceiling_addr; | |
4402 | ||
4403 | /* If we are not in selective display mode, | |
4404 | check only for newlines. */ | |
4405 | if (! (!NILP (current_buffer->selective_display) | |
4406 | && !INTEGERP (current_buffer->selective_display))) | |
ae474ea9 | 4407 | return scan_buffer ('\n', start, 0, count, shortage, 0); |
59b49f63 RS |
4408 | |
4409 | /* The code that follows is like scan_buffer | |
4410 | but checks for either newline or carriage return. */ | |
4411 | ||
4412 | if (shortage != 0) | |
4413 | *shortage = 0; | |
4414 | ||
4415 | if (count > 0) | |
4416 | while (start != limit + 1) | |
4417 | { | |
4418 | ceiling = BUFFER_CEILING_OF (start); | |
4419 | ceiling = min (limit, ceiling); | |
1c9241f5 KH |
4420 | ceiling_addr = POS_ADDR (ceiling) + 1; |
4421 | base = (cursor = POS_ADDR (start)); | |
59b49f63 RS |
4422 | while (1) |
4423 | { | |
4424 | while (*cursor != '\n' && *cursor != 015 && ++cursor != ceiling_addr) | |
4425 | ; | |
4426 | if (cursor != ceiling_addr) | |
4427 | { | |
4428 | if (--count == 0) | |
4429 | { | |
4430 | immediate_quit = 0; | |
4431 | return (start + cursor - base + 1); | |
4432 | } | |
4433 | else | |
4434 | if (++cursor == ceiling_addr) | |
4435 | break; | |
4436 | } | |
4437 | else | |
4438 | break; | |
4439 | } | |
4440 | start += cursor - base; | |
4441 | } | |
4442 | else | |
4443 | { | |
4444 | start--; /* first character we scan */ | |
4445 | while (start > limit - 1) | |
4446 | { /* we WILL scan under start */ | |
4447 | ceiling = BUFFER_FLOOR_OF (start); | |
4448 | ceiling = max (limit, ceiling); | |
1c9241f5 KH |
4449 | ceiling_addr = POS_ADDR (ceiling) - 1; |
4450 | base = (cursor = POS_ADDR (start)); | |
59b49f63 RS |
4451 | cursor++; |
4452 | while (1) | |
4453 | { | |
4454 | while (--cursor != ceiling_addr | |
4455 | && *cursor != '\n' && *cursor != 015) | |
4456 | ; | |
4457 | if (cursor != ceiling_addr) | |
4458 | { | |
4459 | if (++count == 0) | |
4460 | { | |
4461 | immediate_quit = 0; | |
4462 | return (start + cursor - base + 1); | |
4463 | } | |
4464 | } | |
4465 | else | |
4466 | break; | |
4467 | } | |
4468 | start += cursor - base; | |
4469 | } | |
4470 | } | |
4471 | ||
4472 | if (shortage != 0) | |
4473 | *shortage = count * direction; | |
4474 | return (start + ((direction == 1 ? 0 : 1))); | |
4475 | } | |
aa6d10fa RS |
4476 | |
4477 | /* Count up to N lines starting from FROM. | |
4478 | But don't go beyond LIMIT. | |
4479 | Return the number of lines thus found (always positive). | |
4480 | Store the position after what was found into *POS_PTR. */ | |
4481 | ||
4482 | static int | |
4483 | display_count_lines (from, limit, n, pos_ptr) | |
4484 | int from, limit, n; | |
4485 | int *pos_ptr; | |
4486 | { | |
4487 | int oldbegv = BEGV; | |
4488 | int oldzv = ZV; | |
4489 | int shortage = 0; | |
4490 | ||
4491 | if (limit < from) | |
4492 | BEGV = limit; | |
4493 | else | |
4494 | ZV = limit; | |
4495 | ||
59b49f63 | 4496 | *pos_ptr = display_scan_buffer (from, n, &shortage); |
aa6d10fa RS |
4497 | |
4498 | ZV = oldzv; | |
4499 | BEGV = oldbegv; | |
4500 | ||
4501 | if (n < 0) | |
4502 | /* When scanning backwards, scan_buffer stops *after* the last newline | |
4503 | it finds, but does count it. Compensate for that. */ | |
4504 | return - n - shortage - (*pos_ptr != limit); | |
4505 | return n - shortage; | |
4506 | } | |
a2889657 JB |
4507 | \f |
4508 | /* Display STRING on one line of window W, starting at HPOS. | |
4509 | Display at position VPOS. Caller should have done get_display_line. | |
11e82b76 | 4510 | If VPOS == -1, display it as the current frame's title. |
90adcf20 | 4511 | LENGTH is the length of STRING, or -1 meaning STRING is null-terminated. |
a2889657 JB |
4512 | |
4513 | TRUNCATE is GLYPH to display at end if truncated. Zero for none. | |
4514 | ||
4515 | MINCOL is the first column ok to end at. (Pad with spaces to this col.) | |
4516 | MAXCOL is the last column ok to end at. Truncate here. | |
4517 | -1 for MINCOL or MAXCOL means no explicit minimum or maximum. | |
44fa5b1e | 4518 | Both count from the left edge of the frame, as does HPOS. |
a2889657 JB |
4519 | The right edge of W is an implicit maximum. |
4520 | If TRUNCATE is nonzero, the implicit maximum is one column before the edge. | |
4521 | ||
278feba9 RS |
4522 | OBEY_WINDOW_WIDTH says to put spaces or vertical bars |
4523 | at the place where the current window ends in this line | |
4524 | and not display anything beyond there. Otherwise, only MAXCOL | |
4525 | controls where to stop output. | |
4526 | ||
4527 | Returns ending hpos. */ | |
a2889657 JB |
4528 | |
4529 | static int | |
278feba9 RS |
4530 | display_string (w, vpos, string, length, hpos, truncate, |
4531 | obey_window_width, mincol, maxcol) | |
a2889657 JB |
4532 | struct window *w; |
4533 | unsigned char *string; | |
90adcf20 | 4534 | int length; |
a2889657 JB |
4535 | int vpos, hpos; |
4536 | GLYPH truncate; | |
278feba9 | 4537 | int obey_window_width; |
a2889657 JB |
4538 | int mincol, maxcol; |
4539 | { | |
4540 | register int c; | |
d3413a53 | 4541 | int truncated; |
a2889657 JB |
4542 | register GLYPH *p1; |
4543 | int hscroll = XINT (w->hscroll); | |
253c7d2f | 4544 | int tab_width = XINT (XBUFFER (w->buffer)->tab_width); |
a2889657 JB |
4545 | register GLYPH *start; |
4546 | register GLYPH *end; | |
b1d1124b JB |
4547 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
4548 | struct frame_glyphs *desired_glyphs = FRAME_DESIRED_GLYPHS (f); | |
a2889657 JB |
4549 | GLYPH *p1start = desired_glyphs->glyphs[vpos] + hpos; |
4550 | int window_width = XFASTINT (w->width); | |
1c9241f5 KH |
4551 | /* If 1, we must display multibyte characters. */ |
4552 | int multibyte = !NILP (XBUFFER (w->buffer)->enable_multibyte_characters); | |
a2889657 JB |
4553 | |
4554 | /* Use the standard display table, not the window's display table. | |
4555 | We don't want the mode line in rot13. */ | |
f908610f | 4556 | register struct Lisp_Char_Table *dp = 0; |
efc63ef0 | 4557 | int i; |
a2889657 | 4558 | |
f908610f RS |
4559 | if (DISP_TABLE_P (Vstandard_display_table)) |
4560 | dp = XCHAR_TABLE (Vstandard_display_table); | |
a2889657 | 4561 | |
54ff581a | 4562 | if (tab_width <= 0 || tab_width > 1000) tab_width = 8; |
a2889657 JB |
4563 | |
4564 | p1 = p1start; | |
4565 | start = desired_glyphs->glyphs[vpos] + XFASTINT (w->left); | |
a2889657 | 4566 | |
278feba9 | 4567 | if (obey_window_width) |
b1d1124b | 4568 | { |
278feba9 RS |
4569 | end = start + window_width - (truncate != 0); |
4570 | ||
73f194f1 | 4571 | if (!WINDOW_RIGHTMOST_P (w)) |
b1d1124b | 4572 | { |
73f194f1 | 4573 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT (f)) |
278feba9 RS |
4574 | { |
4575 | int i; | |
b1d1124b | 4576 | |
5802e919 | 4577 | for (i = 0; i < FRAME_SCROLL_BAR_COLS (f); i++) |
278feba9 RS |
4578 | *end-- = ' '; |
4579 | } | |
73f194f1 | 4580 | else if (!FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
278feba9 | 4581 | *end-- = '|'; |
b1d1124b | 4582 | } |
b1d1124b | 4583 | } |
a2889657 | 4584 | |
278feba9 RS |
4585 | if (! obey_window_width |
4586 | || (maxcol >= 0 && end - desired_glyphs->glyphs[vpos] > maxcol)) | |
a2889657 | 4587 | end = desired_glyphs->glyphs[vpos] + maxcol; |
278feba9 | 4588 | |
efc63ef0 | 4589 | /* Store 0 in charstart for these columns. */ |
bd5dec8e | 4590 | for (i = (hpos >= 0 ? hpos : 0); i < end - p1start + hpos; i++) |
efc63ef0 RS |
4591 | desired_glyphs->charstarts[vpos][i] = 0; |
4592 | ||
a2889657 JB |
4593 | if (maxcol >= 0 && mincol > maxcol) |
4594 | mincol = maxcol; | |
4595 | ||
1c9241f5 KH |
4596 | if (length < 0) |
4597 | /* We need this value for multibyte characters. */ | |
4598 | length = strlen (string); | |
4599 | ||
d3413a53 RS |
4600 | /* We set truncated to 1 if we get stopped by trying to pass END |
4601 | (that is, trying to pass MAXCOL.) */ | |
4602 | truncated = 0; | |
4603 | while (1) | |
a2889657 | 4604 | { |
1c9241f5 KH |
4605 | int len; |
4606 | ||
4607 | if (length <= 0) | |
90adcf20 | 4608 | break; |
1c9241f5 KH |
4609 | if (multibyte) |
4610 | c = STRING_CHAR_AND_LENGTH (string, length, len); | |
4611 | else | |
4612 | c = *string, len = 1; | |
4613 | ||
4614 | string += len, length -= len; | |
90adcf20 | 4615 | |
d3413a53 RS |
4616 | if (p1 >= end) |
4617 | { | |
4618 | truncated = 1; | |
4619 | break; | |
4620 | } | |
4621 | ||
376b0e59 RS |
4622 | if (dp != 0 && VECTORP (DISP_CHAR_VECTOR (dp, c))) |
4623 | { | |
4624 | p1 = copy_part_of_rope (f, p1, start, | |
4625 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->contents, | |
4626 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->size, | |
4627 | 0); | |
4628 | } | |
4629 | else if (c >= 040 && c < 0177) | |
a2889657 JB |
4630 | { |
4631 | if (p1 >= start) | |
4632 | *p1 = c; | |
4633 | p1++; | |
4634 | } | |
4635 | else if (c == '\t') | |
4636 | { | |
4637 | do | |
4638 | { | |
4639 | if (p1 >= start && p1 < end) | |
4640 | *p1 = SPACEGLYPH; | |
4641 | p1++; | |
4642 | } | |
4643 | while ((p1 - start + hscroll - (hscroll > 0)) % tab_width); | |
4644 | } | |
ded34426 | 4645 | else if (c < 0200 && ! NILP (buffer_defaults.ctl_arrow)) |
a2889657 JB |
4646 | { |
4647 | if (p1 >= start) | |
e57bca5d KH |
4648 | *p1 = (fix_glyph |
4649 | (f, (dp && INTEGERP (DISP_CTRL_GLYPH (dp)) | |
4650 | && GLYPH_CHAR_VALID_P (XINT (DISP_CTRL_GLYPH (dp))) | |
4651 | ? XINT (DISP_CTRL_GLYPH (dp)) : '^'), | |
4652 | 0)); | |
a2889657 | 4653 | p1++; |
6e8290aa | 4654 | if (p1 >= start && p1 < end) |
a2889657 JB |
4655 | *p1 = c ^ 0100; |
4656 | p1++; | |
4657 | } | |
1c9241f5 | 4658 | else if (len == 1) |
a2889657 | 4659 | { |
1c9241f5 | 4660 | /* C is a control character or a binary byte data. */ |
a2889657 | 4661 | if (p1 >= start) |
e57bca5d KH |
4662 | *p1 = (fix_glyph |
4663 | (f, (dp && INTEGERP (DISP_ESCAPE_GLYPH (dp)) | |
4664 | && GLYPH_CHAR_VALID_P (XINT (DISP_ESCAPE_GLYPH (dp))) | |
4665 | ? XINT (DISP_ESCAPE_GLYPH (dp)) : '\\'), | |
4666 | 0)); | |
a2889657 | 4667 | p1++; |
6e8290aa | 4668 | if (p1 >= start && p1 < end) |
a2889657 JB |
4669 | *p1 = (c >> 6) + '0'; |
4670 | p1++; | |
6e8290aa | 4671 | if (p1 >= start && p1 < end) |
a2889657 JB |
4672 | *p1 = (7 & (c >> 3)) + '0'; |
4673 | p1++; | |
6e8290aa | 4674 | if (p1 >= start && p1 < end) |
a2889657 JB |
4675 | *p1 = (7 & c) + '0'; |
4676 | p1++; | |
4677 | } | |
1c9241f5 KH |
4678 | else |
4679 | { | |
4680 | /* C is a multibyte character. */ | |
4681 | int charset = CHAR_CHARSET (c); | |
4682 | int columns = (charset == CHARSET_COMPOSITION | |
4683 | ? cmpchar_table[COMPOSITE_CHAR_ID (c)]->width | |
4684 | : CHARSET_WIDTH (charset)); | |
4685 | ||
4686 | if (p1 < start) | |
4687 | { | |
4688 | /* Since we can't show the left part of C, fill all | |
4689 | columns with spaces. */ | |
4690 | columns -= start - p1; | |
4691 | p1 = start; | |
4692 | while (columns--) | |
4693 | { | |
4694 | if (p1 < end) | |
4695 | *p1 = SPACEGLYPH; | |
4696 | p1++; | |
4697 | } | |
4698 | } | |
4699 | else if (p1 + columns > end) | |
4700 | { | |
4701 | /* Since we can't show the right part of C, fill all | |
4702 | columns with TRUNCATE if TRUNCATE is specified. */ | |
4703 | if (truncate) | |
4704 | { | |
4705 | while (p1 < end) | |
4706 | *p1++ = fix_glyph (f, truncate, 0); | |
4707 | /* And tell the line is truncated. */ | |
4708 | truncated = 1; | |
4709 | } | |
4710 | break; | |
4711 | } | |
4712 | else | |
4713 | { | |
4714 | /* We can show the whole glyph of C. */ | |
4715 | *p1++ = c; | |
4716 | while (--columns) | |
4717 | *p1++ = c | GLYPH_MASK_PADDING; | |
4718 | } | |
4719 | } | |
a2889657 JB |
4720 | } |
4721 | ||
d3413a53 | 4722 | if (truncated) |
a2889657 JB |
4723 | { |
4724 | p1 = end; | |
278feba9 | 4725 | if (truncate) *p1++ = fix_glyph (f, truncate, 0); |
a2889657 JB |
4726 | } |
4727 | else if (mincol >= 0) | |
4728 | { | |
4729 | end = desired_glyphs->glyphs[vpos] + mincol; | |
4730 | while (p1 < end) | |
4731 | *p1++ = SPACEGLYPH; | |
4732 | } | |
4733 | ||
4734 | { | |
4735 | register int len = p1 - desired_glyphs->glyphs[vpos]; | |
4736 | ||
4737 | if (len > desired_glyphs->used[vpos]) | |
4738 | desired_glyphs->used[vpos] = len; | |
4739 | desired_glyphs->glyphs[vpos][desired_glyphs->used[vpos]] = 0; | |
4740 | ||
4741 | return len; | |
4742 | } | |
4743 | } | |
4744 | \f | |
642eefc6 RS |
4745 | /* This is like a combination of memq and assq. |
4746 | Return 1 if PROPVAL appears as an element of LIST | |
4747 | or as the car of an element of LIST. | |
af460d46 RS |
4748 | If PROPVAL is a list, compare each element against LIST |
4749 | in that way, and return 1 if any element of PROPVAL is found in LIST. | |
642eefc6 RS |
4750 | Otherwise return 0. |
4751 | This function cannot quit. */ | |
4752 | ||
4753 | int | |
4754 | invisible_p (propval, list) | |
4755 | register Lisp_Object propval; | |
4756 | Lisp_Object list; | |
4757 | { | |
af460d46 RS |
4758 | register Lisp_Object tail, proptail; |
4759 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
642eefc6 RS |
4760 | { |
4761 | register Lisp_Object tem; | |
af460d46 | 4762 | tem = XCONS (tail)->car; |
642eefc6 RS |
4763 | if (EQ (propval, tem)) |
4764 | return 1; | |
4765 | if (CONSP (tem) && EQ (propval, XCONS (tem)->car)) | |
4766 | return 1; | |
4767 | } | |
af460d46 RS |
4768 | if (CONSP (propval)) |
4769 | for (proptail = propval; CONSP (proptail); | |
4770 | proptail = XCONS (proptail)->cdr) | |
4771 | { | |
4772 | Lisp_Object propelt; | |
4773 | propelt = XCONS (proptail)->car; | |
4774 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
4775 | { | |
4776 | register Lisp_Object tem; | |
4777 | tem = XCONS (tail)->car; | |
4778 | if (EQ (propelt, tem)) | |
4779 | return 1; | |
4780 | if (CONSP (tem) && EQ (propelt, XCONS (tem)->car)) | |
4781 | return 1; | |
4782 | } | |
4783 | } | |
642eefc6 RS |
4784 | return 0; |
4785 | } | |
4786 | ||
4787 | /* Return 1 if PROPVAL appears as the car of an element of LIST | |
4788 | and the cdr of that element is non-nil. | |
af460d46 RS |
4789 | If PROPVAL is a list, check each element of PROPVAL in that way, |
4790 | and the first time some element is found, | |
4791 | return 1 if the cdr of that element is non-nil. | |
642eefc6 RS |
4792 | Otherwise return 0. |
4793 | This function cannot quit. */ | |
4794 | ||
4795 | int | |
4796 | invisible_ellipsis_p (propval, list) | |
4797 | register Lisp_Object propval; | |
4798 | Lisp_Object list; | |
4799 | { | |
af460d46 RS |
4800 | register Lisp_Object tail, proptail; |
4801 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
642eefc6 RS |
4802 | { |
4803 | register Lisp_Object tem; | |
af460d46 | 4804 | tem = XCONS (tail)->car; |
642eefc6 RS |
4805 | if (CONSP (tem) && EQ (propval, XCONS (tem)->car)) |
4806 | return ! NILP (XCONS (tem)->cdr); | |
4807 | } | |
af460d46 RS |
4808 | if (CONSP (propval)) |
4809 | for (proptail = propval; CONSP (proptail); | |
4810 | proptail = XCONS (proptail)->cdr) | |
4811 | { | |
4812 | Lisp_Object propelt; | |
4813 | propelt = XCONS (proptail)->car; | |
4814 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
4815 | { | |
4816 | register Lisp_Object tem; | |
4817 | tem = XCONS (tail)->car; | |
4818 | if (CONSP (tem) && EQ (propelt, XCONS (tem)->car)) | |
4819 | return ! NILP (XCONS (tem)->cdr); | |
4820 | } | |
4821 | } | |
642eefc6 RS |
4822 | return 0; |
4823 | } | |
4824 | \f | |
a2889657 JB |
4825 | void |
4826 | syms_of_xdisp () | |
4827 | { | |
cf074754 RS |
4828 | staticpro (&Qmenu_bar_update_hook); |
4829 | Qmenu_bar_update_hook = intern ("menu-bar-update-hook"); | |
4830 | ||
d46fb96a | 4831 | staticpro (&Qoverriding_terminal_local_map); |
7079aefa | 4832 | Qoverriding_terminal_local_map = intern ("overriding-terminal-local-map"); |
d46fb96a | 4833 | |
399164b4 KH |
4834 | staticpro (&Qoverriding_local_map); |
4835 | Qoverriding_local_map = intern ("overriding-local-map"); | |
4836 | ||
75c43375 RS |
4837 | staticpro (&Qwindow_scroll_functions); |
4838 | Qwindow_scroll_functions = intern ("window-scroll-functions"); | |
4839 | ||
e0bfbde6 RS |
4840 | staticpro (&Qredisplay_end_trigger_functions); |
4841 | Qredisplay_end_trigger_functions = intern ("redisplay-end-trigger-functions"); | |
67481ae5 | 4842 | |
a2889657 JB |
4843 | staticpro (&last_arrow_position); |
4844 | staticpro (&last_arrow_string); | |
4845 | last_arrow_position = Qnil; | |
4846 | last_arrow_string = Qnil; | |
4847 | ||
4848 | DEFVAR_LISP ("global-mode-string", &Vglobal_mode_string, | |
8c45d522 | 4849 | "String (or mode line construct) included (normally) in `mode-line-format'."); |
a2889657 JB |
4850 | Vglobal_mode_string = Qnil; |
4851 | ||
4852 | DEFVAR_LISP ("overlay-arrow-position", &Voverlay_arrow_position, | |
4853 | "Marker for where to display an arrow on top of the buffer text.\n\ | |
4854 | This must be the beginning of a line in order to work.\n\ | |
4855 | See also `overlay-arrow-string'."); | |
4856 | Voverlay_arrow_position = Qnil; | |
4857 | ||
4858 | DEFVAR_LISP ("overlay-arrow-string", &Voverlay_arrow_string, | |
4859 | "String to display as an arrow. See also `overlay-arrow-position'."); | |
4860 | Voverlay_arrow_string = Qnil; | |
4861 | ||
4862 | DEFVAR_INT ("scroll-step", &scroll_step, | |
4863 | "*The number of lines to try scrolling a window by when point moves out.\n\ | |
44fa5b1e JB |
4864 | If that fails to bring point back on frame, point is centered instead.\n\ |
4865 | If this is zero, point is always centered after it moves off frame."); | |
a2889657 | 4866 | |
0789adb2 RS |
4867 | DEFVAR_INT ("scroll-conservatively", &scroll_conservatively, |
4868 | "*Scroll up to this many lines, to bring point back on screen."); | |
4869 | scroll_conservatively = 0; | |
4870 | ||
9afd2168 RS |
4871 | DEFVAR_INT ("scroll-margin", &scroll_margin, |
4872 | "*Number of lines of margin at the top and bottom of a window.\n\ | |
4873 | Recenter the window whenever point gets within this many lines\n\ | |
4874 | of the top or bottom of the window."); | |
4875 | scroll_margin = 0; | |
4876 | ||
a2889657 JB |
4877 | DEFVAR_INT ("debug-end-pos", &debug_end_pos, "Don't ask"); |
4878 | ||
4879 | DEFVAR_BOOL ("truncate-partial-width-windows", | |
4880 | &truncate_partial_width_windows, | |
44fa5b1e | 4881 | "*Non-nil means truncate lines in all windows less than full frame wide."); |
a2889657 JB |
4882 | truncate_partial_width_windows = 1; |
4883 | ||
4884 | DEFVAR_BOOL ("mode-line-inverse-video", &mode_line_inverse_video, | |
4885 | "*Non-nil means use inverse video for the mode line."); | |
4886 | mode_line_inverse_video = 1; | |
aa6d10fa RS |
4887 | |
4888 | DEFVAR_INT ("line-number-display-limit", &line_number_display_limit, | |
4889 | "*Maximum buffer size for which line number should be displayed."); | |
4890 | line_number_display_limit = 1000000; | |
fba9ce76 RS |
4891 | |
4892 | DEFVAR_BOOL ("highlight-nonselected-windows", &highlight_nonselected_windows, | |
4893 | "*Non-nil means highlight region even in nonselected windows."); | |
4894 | highlight_nonselected_windows = 1; | |
d39b6696 KH |
4895 | |
4896 | DEFVAR_BOOL ("multiple-frames", &multiple_frames, | |
3450d04c KH |
4897 | "Non-nil if more than one frame is visible on this display.\n\ |
4898 | Minibuffer-only frames don't count, but iconified frames do.\n\ | |
4c2eb242 RS |
4899 | This variable is not guaranteed to be accurate except while processing\n\ |
4900 | `frame-title-format' and `icon-title-format'."); | |
d39b6696 KH |
4901 | |
4902 | DEFVAR_LISP ("frame-title-format", &Vframe_title_format, | |
4903 | "Template for displaying the titlebar of visible frames.\n\ | |
4904 | \(Assuming the window manager supports this feature.)\n\ | |
4905 | This variable has the same structure as `mode-line-format' (which see),\n\ | |
4906 | and is used only on frames for which no explicit name has been set\n\ | |
4907 | \(see `modify-frame-parameters')."); | |
4908 | DEFVAR_LISP ("icon-title-format", &Vicon_title_format, | |
4909 | "Template for displaying the titlebar of an iconified frame.\n\ | |
4910 | \(Assuming the window manager supports this feature.)\n\ | |
4911 | This variable has the same structure as `mode-line-format' (which see),\n\ | |
4912 | and is used only on frames for which no explicit name has been set\n\ | |
4913 | \(see `modify-frame-parameters')."); | |
4914 | Vicon_title_format | |
4915 | = Vframe_title_format | |
4916 | = Fcons (intern ("multiple-frames"), | |
4917 | Fcons (build_string ("%b"), | |
4918 | Fcons (Fcons (build_string (""), | |
4919 | Fcons (intern ("invocation-name"), | |
4920 | Fcons (build_string ("@"), | |
4921 | Fcons (intern ("system-name"), | |
4922 | Qnil)))), | |
4923 | Qnil))); | |
5992c4f7 KH |
4924 | |
4925 | DEFVAR_LISP ("message-log-max", &Vmessage_log_max, | |
4926 | "Maximum number of lines to keep in the message log buffer.\n\ | |
4927 | If nil, disable message logging. If t, log messages but don't truncate\n\ | |
4928 | the buffer when it becomes large."); | |
4929 | XSETFASTINT (Vmessage_log_max, 50); | |
08b610e4 RS |
4930 | |
4931 | DEFVAR_LISP ("window-size-change-functions", &Vwindow_size_change_functions, | |
4932 | "Functions called before redisplay, if window sizes have changed.\n\ | |
4933 | The value should be a list of functions that take one argument.\n\ | |
4934 | Just before redisplay, for each frame, if any of its windows have changed\n\ | |
4935 | size since the last redisplay, or have been split or deleted,\n\ | |
4936 | all the functions in the list are called, with the frame as argument."); | |
4937 | Vwindow_size_change_functions = Qnil; | |
75c43375 RS |
4938 | |
4939 | DEFVAR_LISP ("window-scroll-functions", &Vwindow_scroll_functions, | |
f908610f | 4940 | "List of Functions to call before redisplaying a window with scrolling.\n\ |
75c43375 | 4941 | Each function is called with two arguments, the window\n\ |
8d9583b0 RS |
4942 | and its new display-start position. Note that the value of `window-end'\n\ |
4943 | is not valid when these functions are called."); | |
75c43375 | 4944 | Vwindow_scroll_functions = Qnil; |
a2889657 JB |
4945 | } |
4946 | ||
4947 | /* initialize the window system */ | |
4948 | init_xdisp () | |
4949 | { | |
4950 | Lisp_Object root_window; | |
4951 | #ifndef COMPILER_REGISTER_BUG | |
4952 | register | |
4953 | #endif /* COMPILER_REGISTER_BUG */ | |
4954 | struct window *mini_w; | |
4955 | ||
4956 | this_line_bufpos = 0; | |
4957 | ||
4958 | mini_w = XWINDOW (minibuf_window); | |
11e82b76 | 4959 | root_window = FRAME_ROOT_WINDOW (XFRAME (WINDOW_FRAME (mini_w))); |
a2889657 JB |
4960 | |
4961 | echo_area_glyphs = 0; | |
4962 | previous_echo_glyphs = 0; | |
4963 | ||
4964 | if (!noninteractive) | |
4965 | { | |
44fa5b1e | 4966 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (root_window))); |
c2213350 | 4967 | XSETFASTINT (XWINDOW (root_window)->top, 0); |
44fa5b1e | 4968 | set_window_height (root_window, FRAME_HEIGHT (f) - 1, 0); |
c2213350 | 4969 | XSETFASTINT (mini_w->top, FRAME_HEIGHT (f) - 1); |
a2889657 JB |
4970 | set_window_height (minibuf_window, 1, 0); |
4971 | ||
c2213350 KH |
4972 | XSETFASTINT (XWINDOW (root_window)->width, FRAME_WIDTH (f)); |
4973 | XSETFASTINT (mini_w->width, FRAME_WIDTH (f)); | |
a2889657 JB |
4974 | } |
4975 | } |