Commit | Line | Data |
---|---|---|
a2889657 | 1 | /* Display generation from window structure and buffer text. |
2384c010 RS |
2 | Copyright (C) 1985, 86, 87, 88, 93, 94, 95, 1997 |
3 | Free Software Foundation, Inc. | |
a2889657 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
b1d1124b | 9 | the Free Software Foundation; either version 2, or (at your option) |
a2889657 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
a2889657 JB |
21 | |
22 | ||
18160b98 | 23 | #include <config.h> |
a2889657 JB |
24 | #include <stdio.h> |
25 | /*#include <ctype.h>*/ | |
26 | #undef NULL | |
27 | #include "lisp.h" | |
44fa5b1e | 28 | #include "frame.h" |
a2889657 JB |
29 | #include "window.h" |
30 | #include "termchar.h" | |
31 | #include "dispextern.h" | |
32 | #include "buffer.h" | |
1c9241f5 | 33 | #include "charset.h" |
a2889657 JB |
34 | #include "indent.h" |
35 | #include "commands.h" | |
36 | #include "macros.h" | |
37 | #include "disptab.h" | |
30c566e4 | 38 | #include "termhooks.h" |
b0a0fbda | 39 | #include "intervals.h" |
fe8b0cf8 | 40 | #include "keyboard.h" |
1c9241f5 KH |
41 | #include "coding.h" |
42 | #include "process.h" | |
a2889657 | 43 | |
8f3343d0 | 44 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
76412d64 | 45 | extern void set_frame_menubar (); |
cd6dfed6 | 46 | extern int pending_menu_activation; |
76412d64 RS |
47 | #endif |
48 | ||
a2889657 JB |
49 | extern int interrupt_input; |
50 | extern int command_loop_level; | |
51 | ||
b6436d4e RS |
52 | extern int minibuffer_auto_raise; |
53 | ||
c4628384 RS |
54 | extern Lisp_Object Qface; |
55 | ||
399164b4 KH |
56 | extern Lisp_Object Voverriding_local_map; |
57 | extern Lisp_Object Voverriding_local_map_menu_flag; | |
58 | ||
d46fb96a | 59 | Lisp_Object Qoverriding_local_map, Qoverriding_terminal_local_map; |
75c43375 | 60 | Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
e0bfbde6 | 61 | Lisp_Object Qredisplay_end_trigger_functions; |
399164b4 | 62 | |
f88eb0b6 | 63 | /* Nonzero means print newline to stdout before next minibuffer message. */ |
a2889657 JB |
64 | |
65 | int noninteractive_need_newline; | |
66 | ||
f88eb0b6 KH |
67 | /* Nonzero means print newline to message log before next message. */ |
68 | ||
3c6595e0 | 69 | static int message_log_need_newline; |
f88eb0b6 | 70 | |
a2889657 JB |
71 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
72 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
210e752f KH |
73 | #define minmax(floor, val, ceil) \ |
74 | ((val) < (floor) ? (floor) : (val) > (ceil) ? (ceil) : (val)) | |
a2889657 JB |
75 | |
76 | /* The buffer position of the first character appearing | |
44fa5b1e JB |
77 | entirely or partially on the current frame line. |
78 | Or zero, which disables the optimization for the current frame line. */ | |
a2889657 JB |
79 | static int this_line_bufpos; |
80 | ||
81 | /* Number of characters past the end of this line, | |
82 | including the terminating newline */ | |
83 | static int this_line_endpos; | |
84 | ||
44fa5b1e | 85 | /* The vertical position of this frame line. */ |
a2889657 JB |
86 | static int this_line_vpos; |
87 | ||
44fa5b1e | 88 | /* Hpos value for start of display on this frame line. |
a2889657 JB |
89 | Usually zero, but negative if first character really began |
90 | on previous line */ | |
91 | static int this_line_start_hpos; | |
92 | ||
93 | /* Buffer that this_line variables are describing. */ | |
94 | static struct buffer *this_line_buffer; | |
95 | ||
a2889657 | 96 | /* Value of echo_area_glyphs when it was last acted on. |
44fa5b1e | 97 | If this is nonzero, there is a message on the frame |
a2889657 JB |
98 | in the minibuffer and it should be erased as soon |
99 | as it is no longer requested to appear. */ | |
100 | char *previous_echo_glyphs; | |
101 | ||
44fa5b1e | 102 | /* Nonzero means truncate lines in all windows less wide than the frame */ |
a2889657 JB |
103 | int truncate_partial_width_windows; |
104 | ||
d39b6696 KH |
105 | /* Nonzero means we have more than one non-minibuffer-only frame. |
106 | Not guaranteed to be accurate except while parsing frame-title-format. */ | |
107 | int multiple_frames; | |
108 | ||
a2889657 JB |
109 | Lisp_Object Vglobal_mode_string; |
110 | ||
111 | /* Marker for where to display an arrow on top of the buffer text. */ | |
112 | Lisp_Object Voverlay_arrow_position; | |
113 | ||
114 | /* String to display for the arrow. */ | |
115 | Lisp_Object Voverlay_arrow_string; | |
116 | ||
d39b6696 KH |
117 | /* Like mode-line-format, but for the titlebar on a visible frame. */ |
118 | Lisp_Object Vframe_title_format; | |
119 | ||
120 | /* Like mode-line-format, but for the titlebar on an iconified frame. */ | |
121 | Lisp_Object Vicon_title_format; | |
122 | ||
08b610e4 RS |
123 | /* List of functions to call when a window's size changes. These |
124 | functions get one arg, a frame on which one or more windows' sizes | |
125 | have changed. */ | |
126 | static Lisp_Object Vwindow_size_change_functions; | |
127 | ||
a2889657 | 128 | /* Values of those variables at last redisplay. */ |
ded34426 | 129 | static Lisp_Object last_arrow_position, last_arrow_string; |
a2889657 | 130 | |
cf074754 RS |
131 | Lisp_Object Qmenu_bar_update_hook; |
132 | ||
a2889657 JB |
133 | /* Nonzero if overlay arrow has been displayed once in this window. */ |
134 | static int overlay_arrow_seen; | |
135 | ||
ca26e1c8 KH |
136 | /* Nonzero if visible end of buffer has already been displayed once |
137 | in this window. (We need this variable in case there are overlay | |
138 | strings that get displayed there.) */ | |
139 | static int zv_strings_seen; | |
140 | ||
fba9ce76 RS |
141 | /* Nonzero means highlight the region even in nonselected windows. */ |
142 | static int highlight_nonselected_windows; | |
143 | ||
44fa5b1e | 144 | /* If cursor motion alone moves point off frame, |
a2889657 | 145 | Try scrolling this many lines up or down if that will bring it back. */ |
14510fee | 146 | static int scroll_step; |
a2889657 | 147 | |
0789adb2 RS |
148 | /* Non-0 means scroll just far enough to bring point back on the screen, |
149 | when appropriate. */ | |
150 | static int scroll_conservatively; | |
151 | ||
9afd2168 RS |
152 | /* Recenter the window whenever point gets within this many lines |
153 | of the top or bottom of the window. */ | |
154 | int scroll_margin; | |
155 | ||
a2889657 JB |
156 | /* Nonzero if try_window_id has made blank lines at window bottom |
157 | since the last redisplay that paused */ | |
158 | static int blank_end_of_window; | |
159 | ||
42640f83 RS |
160 | /* Number of windows showing the buffer of the selected window |
161 | (or another buffer with the same base buffer). | |
a2889657 JB |
162 | keyboard.c refers to this. */ |
163 | int buffer_shared; | |
164 | ||
44fa5b1e | 165 | /* display_text_line sets these to the frame position (origin 0) of point, |
a2889657 JB |
166 | whether the window is selected or not. |
167 | Set one to -1 first to determine whether point was found afterwards. */ | |
168 | ||
169 | static int cursor_vpos; | |
170 | static int cursor_hpos; | |
171 | ||
14510fee | 172 | static int debug_end_pos; |
a2889657 JB |
173 | |
174 | /* Nonzero means display mode line highlighted */ | |
175 | int mode_line_inverse_video; | |
176 | ||
e9874cee | 177 | static void redisplay_internal (); |
ff6c30e5 | 178 | static int message_log_check_duplicate (); |
a2889657 JB |
179 | static void echo_area_display (); |
180 | void mark_window_display_accurate (); | |
181 | static void redisplay_windows (); | |
182 | static void redisplay_window (); | |
90adcf20 | 183 | static void update_menu_bar (); |
a2889657 JB |
184 | static void try_window (); |
185 | static int try_window_id (); | |
186 | static struct position *display_text_line (); | |
187 | static void display_mode_line (); | |
188 | static int display_mode_element (); | |
a2889657 JB |
189 | static char *decode_mode_spec (); |
190 | static int display_string (); | |
7ce2c095 | 191 | static void display_menu_bar (); |
aa6d10fa | 192 | static int display_count_lines (); |
a2889657 JB |
193 | |
194 | /* Prompt to display in front of the minibuffer contents */ | |
8c5b6a0a | 195 | Lisp_Object minibuf_prompt; |
a2889657 JB |
196 | |
197 | /* Width in columns of current minibuffer prompt. */ | |
198 | int minibuf_prompt_width; | |
199 | ||
200 | /* Message to display instead of minibuffer contents | |
201 | This is what the functions error and message make, | |
202 | and command echoing uses it as well. | |
203 | It overrides the minibuf_prompt as well as the buffer. */ | |
204 | char *echo_area_glyphs; | |
205 | ||
90adcf20 RS |
206 | /* This is the length of the message in echo_area_glyphs. */ |
207 | int echo_area_glyphs_length; | |
208 | ||
73af359d RS |
209 | /* This is the window where the echo area message was displayed. |
210 | It is always a minibuffer window, but it may not be the | |
211 | same window currently active as a minibuffer. */ | |
212 | Lisp_Object echo_area_window; | |
213 | ||
a2889657 JB |
214 | /* true iff we should redraw the mode lines on the next redisplay */ |
215 | int update_mode_lines; | |
216 | ||
217 | /* Smallest number of characters before the gap | |
218 | at any time since last redisplay that finished. | |
219 | Valid for current buffer when try_window_id can be called. */ | |
220 | int beg_unchanged; | |
221 | ||
222 | /* Smallest number of characters after the gap | |
223 | at any time since last redisplay that finished. | |
224 | Valid for current buffer when try_window_id can be called. */ | |
225 | int end_unchanged; | |
226 | ||
227 | /* MODIFF as of last redisplay that finished; | |
8850a573 RS |
228 | if it matches MODIFF, and overlay_unchanged_modified |
229 | matches OVERLAY_MODIFF, that means beg_unchanged and end_unchanged | |
a2889657 JB |
230 | contain no useful information */ |
231 | int unchanged_modified; | |
232 | ||
8850a573 RS |
233 | /* OVERLAY_MODIFF as of last redisplay that finished. */ |
234 | int overlay_unchanged_modified; | |
235 | ||
a2889657 JB |
236 | /* Nonzero if window sizes or contents have changed |
237 | since last redisplay that finished */ | |
238 | int windows_or_buffers_changed; | |
239 | ||
aa6d10fa RS |
240 | /* Nonzero after display_mode_line if %l was used |
241 | and it displayed a line number. */ | |
242 | int line_number_displayed; | |
243 | ||
244 | /* Maximum buffer size for which to display line numbers. */ | |
14510fee | 245 | static int line_number_display_limit; |
5992c4f7 KH |
246 | |
247 | /* Number of lines to keep in the message log buffer. | |
248 | t means infinite. nil means don't log at all. */ | |
249 | Lisp_Object Vmessage_log_max; | |
a2889657 | 250 | \f |
1adc55de RS |
251 | /* Output a newline in the *Messages* buffer if "needs" one. */ |
252 | ||
3c6595e0 KH |
253 | void |
254 | message_log_maybe_newline () | |
255 | { | |
256 | if (message_log_need_newline) | |
257 | message_dolog ("", 0, 1); | |
258 | } | |
259 | ||
260 | ||
d917be71 KH |
261 | /* Add a string to the message log, optionally terminated with a newline. |
262 | This function calls low-level routines in order to bypass text property | |
263 | hooks, etc. which might not be safe to run. */ | |
90adcf20 RS |
264 | |
265 | void | |
f88eb0b6 | 266 | message_dolog (m, len, nlflag) |
90adcf20 | 267 | char *m; |
f88eb0b6 | 268 | int len, nlflag; |
5992c4f7 | 269 | { |
f88eb0b6 | 270 | if (!NILP (Vmessage_log_max)) |
5992c4f7 KH |
271 | { |
272 | struct buffer *oldbuf; | |
273 | int oldpoint, oldbegv, oldzv; | |
69f033ab | 274 | int old_windows_or_buffers_changed = windows_or_buffers_changed; |
5992c4f7 KH |
275 | |
276 | oldbuf = current_buffer; | |
3c6595e0 | 277 | Fset_buffer (Fget_buffer_create (build_string ("*Messages*"))); |
16c300fb | 278 | current_buffer->undo_list = Qt; |
5992c4f7 KH |
279 | oldpoint = PT; |
280 | oldbegv = BEGV; | |
281 | oldzv = ZV; | |
d917be71 KH |
282 | BEGV = BEG; |
283 | ZV = Z; | |
5992c4f7 | 284 | if (oldpoint == Z) |
f88eb0b6 | 285 | oldpoint += len + nlflag; |
5992c4f7 | 286 | if (oldzv == Z) |
f88eb0b6 | 287 | oldzv += len + nlflag; |
5992c4f7 | 288 | TEMP_SET_PT (Z); |
f88eb0b6 KH |
289 | if (len) |
290 | insert_1 (m, len, 1, 0); | |
291 | if (nlflag) | |
5992c4f7 | 292 | { |
ff6c30e5 KH |
293 | int this_bol, prev_bol, dup; |
294 | insert_1 ("\n", 1, 1, 0); | |
295 | ||
296 | this_bol = scan_buffer ('\n', Z, 0, -2, 0, 0); | |
297 | if (this_bol > BEG) | |
298 | { | |
299 | prev_bol = scan_buffer ('\n', this_bol, 0, -2, 0, 0); | |
300 | dup = message_log_check_duplicate (prev_bol, this_bol); | |
301 | if (dup) | |
302 | { | |
303 | if (oldpoint > prev_bol) | |
304 | oldpoint -= min (this_bol, oldpoint) - prev_bol; | |
305 | if (oldbegv > prev_bol) | |
306 | oldbegv -= min (this_bol, oldbegv) - prev_bol; | |
307 | if (oldzv > prev_bol) | |
308 | oldzv -= min (this_bol, oldzv) - prev_bol; | |
309 | del_range_1 (prev_bol, this_bol, 0); | |
310 | if (dup > 1) | |
311 | { | |
312 | char dupstr[40]; | |
313 | int duplen; | |
314 | ||
315 | /* If you change this format, don't forget to also | |
316 | change message_log_check_duplicate. */ | |
317 | sprintf (dupstr, " [%d times]", dup); | |
318 | duplen = strlen (dupstr); | |
319 | TEMP_SET_PT (Z-1); | |
320 | if (oldpoint == Z) | |
321 | oldpoint += duplen; | |
322 | if (oldzv == Z) | |
323 | oldzv += duplen; | |
324 | insert_1 (dupstr, duplen, 1, 0); | |
325 | } | |
326 | } | |
327 | } | |
328 | ||
329 | if (NATNUMP (Vmessage_log_max)) | |
330 | { | |
331 | int pos = scan_buffer ('\n', Z, 0, | |
332 | -XFASTINT (Vmessage_log_max) - 1, 0, 0); | |
333 | oldpoint -= min (pos, oldpoint) - BEG; | |
334 | oldbegv -= min (pos, oldbegv) - BEG; | |
335 | oldzv -= min (pos, oldzv) - BEG; | |
336 | del_range_1 (BEG, pos, 0); | |
337 | } | |
5992c4f7 KH |
338 | } |
339 | BEGV = oldbegv; | |
340 | ZV = oldzv; | |
341 | TEMP_SET_PT (oldpoint); | |
342 | set_buffer_internal (oldbuf); | |
69f033ab | 343 | windows_or_buffers_changed = old_windows_or_buffers_changed; |
3c6595e0 | 344 | message_log_need_newline = !nlflag; |
5992c4f7 | 345 | } |
f88eb0b6 KH |
346 | } |
347 | ||
ff6c30e5 KH |
348 | /* We are at the end of the buffer after just having inserted a newline. |
349 | (Note: We depend on the fact we won't be crossing the gap.) | |
350 | Check to see if the most recent message looks a lot like the previous one. | |
351 | Return 0 if different, 1 if the new one should just replace it, or a | |
352 | value N > 1 if we should also append " [N times]". */ | |
f82aff7c | 353 | |
ff6c30e5 KH |
354 | static int |
355 | message_log_check_duplicate (prev_bol, this_bol) | |
356 | int prev_bol, this_bol; | |
357 | { | |
358 | int i; | |
359 | int len = Z - 1 - this_bol; | |
360 | int seen_dots = 0; | |
f82aff7c RS |
361 | unsigned char *p1 = BUF_CHAR_ADDRESS (current_buffer, prev_bol); |
362 | unsigned char *p2 = BUF_CHAR_ADDRESS (current_buffer, this_bol); | |
ff6c30e5 KH |
363 | |
364 | for (i = 0; i < len; i++) | |
365 | { | |
366 | if (i >= 3 && p1[i-3] == '.' && p1[i-2] == '.' && p1[i-1] == '.' | |
367 | && p1[i] != '\n') | |
368 | seen_dots = 1; | |
369 | if (p1[i] != p2[i]) | |
370 | return seen_dots; | |
371 | } | |
372 | p1 += len; | |
373 | if (*p1 == '\n') | |
374 | return 2; | |
375 | if (*p1++ == ' ' && *p1++ == '[') | |
376 | { | |
377 | int n = 0; | |
378 | while (*p1 >= '0' && *p1 <= '9') | |
379 | n = n * 10 + *p1++ - '0'; | |
380 | if (strncmp (p1, " times]\n", 8) == 0) | |
381 | return n+1; | |
382 | } | |
383 | return 0; | |
384 | } | |
1adc55de | 385 | \f |
f88eb0b6 | 386 | /* Display an echo area message M with a specified length of LEN chars. |
1adc55de | 387 | The string may include null characters. If M is 0, clear out any |
f88eb0b6 | 388 | existing message, and let the minibuffer text show through. |
1adc55de RS |
389 | |
390 | The buffer M must continue to exist until after the echo area | |
391 | gets cleared or some other message gets displayed there. | |
392 | ||
393 | Do not pass text that is stored in a Lisp string. | |
394 | Do not pass text in a buffer that was alloca'd. */ | |
f88eb0b6 KH |
395 | |
396 | void | |
397 | message2 (m, len) | |
398 | char *m; | |
399 | int len; | |
400 | { | |
401 | /* First flush out any partial line written with print. */ | |
3c6595e0 | 402 | message_log_maybe_newline (); |
f88eb0b6 KH |
403 | if (m) |
404 | message_dolog (m, len, 1); | |
5992c4f7 KH |
405 | message2_nolog (m, len); |
406 | } | |
407 | ||
408 | ||
1adc55de | 409 | /* The non-logging counterpart of message2. */ |
5992c4f7 KH |
410 | |
411 | void | |
412 | message2_nolog (m, len) | |
413 | char *m; | |
414 | int len; | |
90adcf20 RS |
415 | { |
416 | if (noninteractive) | |
417 | { | |
418 | if (noninteractive_need_newline) | |
419 | putc ('\n', stderr); | |
420 | noninteractive_need_newline = 0; | |
c3597849 RS |
421 | if (m) |
422 | fwrite (m, len, 1, stderr); | |
90adcf20 RS |
423 | if (cursor_in_echo_area == 0) |
424 | fprintf (stderr, "\n"); | |
425 | fflush (stderr); | |
426 | } | |
427 | /* A null message buffer means that the frame hasn't really been | |
428 | initialized yet. Error messages get reported properly by | |
429 | cmd_error, so this must be just an informative message; toss it. */ | |
430 | else if (INTERACTIVE && FRAME_MESSAGE_BUF (selected_frame)) | |
431 | { | |
73af359d RS |
432 | Lisp_Object mini_window; |
433 | FRAME_PTR f; | |
90adcf20 | 434 | |
73af359d RS |
435 | /* Get the frame containing the minibuffer |
436 | that the selected frame is using. */ | |
437 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
438 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
439 | ||
73af359d | 440 | FRAME_SAMPLE_VISIBILITY (f); |
90adcf20 | 441 | if (FRAME_VISIBLE_P (selected_frame) |
73af359d RS |
442 | && ! FRAME_VISIBLE_P (f)) |
443 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (mini_window))); | |
90adcf20 RS |
444 | |
445 | if (m) | |
446 | { | |
447 | echo_area_glyphs = m; | |
448 | echo_area_glyphs_length = len; | |
b6436d4e RS |
449 | |
450 | if (minibuffer_auto_raise) | |
451 | Fraise_frame (WINDOW_FRAME (XWINDOW (mini_window))); | |
90adcf20 | 452 | } |
ded34426 JB |
453 | else |
454 | echo_area_glyphs = previous_echo_glyphs = 0; | |
455 | ||
456 | do_pending_window_change (); | |
457 | echo_area_display (); | |
73af359d | 458 | update_frame (f, 1, 1); |
ded34426 | 459 | do_pending_window_change (); |
853cf346 | 460 | if (frame_up_to_date_hook != 0 && ! gc_in_progress) |
73af359d | 461 | (*frame_up_to_date_hook) (f); |
ded34426 JB |
462 | } |
463 | } | |
1adc55de RS |
464 | \f |
465 | /* Display a null-terminated echo area message M. If M is 0, clear out any | |
466 | existing message, and let the minibuffer text show through. | |
467 | ||
468 | The buffer M must continue to exist until after the echo area | |
469 | gets cleared or some other message gets displayed there. | |
470 | ||
471 | Do not pass text that is stored in a Lisp string. | |
472 | Do not pass text in a buffer that was alloca'd. */ | |
ded34426 | 473 | |
48ae5f0a KH |
474 | void |
475 | message1 (m) | |
476 | char *m; | |
477 | { | |
478 | message2 (m, (m ? strlen (m) : 0)); | |
479 | } | |
480 | ||
0b1005ef KH |
481 | void |
482 | message1_nolog (m) | |
483 | char *m; | |
484 | { | |
485 | message2_nolog (m, (m ? strlen (m) : 0)); | |
486 | } | |
487 | ||
76412d64 RS |
488 | /* Truncate what will be displayed in the echo area |
489 | the next time we display it--but don't redisplay it now. */ | |
490 | ||
491 | void | |
492 | truncate_echo_area (len) | |
493 | int len; | |
494 | { | |
495 | /* A null message buffer means that the frame hasn't really been | |
496 | initialized yet. Error messages get reported properly by | |
497 | cmd_error, so this must be just an informative message; toss it. */ | |
498 | if (!noninteractive && INTERACTIVE && FRAME_MESSAGE_BUF (selected_frame)) | |
499 | echo_area_glyphs_length = len; | |
500 | } | |
501 | ||
44fa5b1e | 502 | /* Nonzero if FRAME_MESSAGE_BUF (selected_frame) is being used by print; |
9c74a0dd JB |
503 | zero if being used by message. */ |
504 | int message_buf_print; | |
505 | ||
1adc55de | 506 | /* Dump an informative message to the minibuf. If M is 0, clear out |
81d478f3 | 507 | any existing message, and let the minibuffer text show through. */ |
1adc55de | 508 | |
a2889657 | 509 | /* VARARGS 1 */ |
a2889657 JB |
510 | void |
511 | message (m, a1, a2, a3) | |
512 | char *m; | |
5d5ed907 | 513 | EMACS_INT a1, a2, a3; |
a2889657 JB |
514 | { |
515 | if (noninteractive) | |
516 | { | |
81d478f3 JB |
517 | if (m) |
518 | { | |
519 | if (noninteractive_need_newline) | |
520 | putc ('\n', stderr); | |
521 | noninteractive_need_newline = 0; | |
522 | fprintf (stderr, m, a1, a2, a3); | |
c4f14ccb RS |
523 | if (cursor_in_echo_area == 0) |
524 | fprintf (stderr, "\n"); | |
81d478f3 JB |
525 | fflush (stderr); |
526 | } | |
a2889657 | 527 | } |
1f40cad2 | 528 | else if (INTERACTIVE) |
a2889657 | 529 | { |
1f40cad2 JB |
530 | /* The frame whose minibuffer we're going to display the message on. |
531 | It may be larger than the selected frame, so we need | |
532 | to use its buffer, not the selected frame's buffer. */ | |
73af359d RS |
533 | Lisp_Object mini_window; |
534 | FRAME_PTR f; | |
535 | ||
536 | /* Get the frame containing the minibuffer | |
537 | that the selected frame is using. */ | |
538 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
539 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
1f40cad2 JB |
540 | |
541 | /* A null message buffer means that the frame hasn't really been | |
542 | initialized yet. Error messages get reported properly by | |
543 | cmd_error, so this must be just an informative message; toss it. */ | |
73af359d | 544 | if (FRAME_MESSAGE_BUF (f)) |
81d478f3 | 545 | { |
1f40cad2 JB |
546 | if (m) |
547 | { | |
90adcf20 | 548 | int len; |
a2889657 | 549 | #ifdef NO_ARG_ARRAY |
5d5ed907 | 550 | EMACS_INT a[3]; |
90adcf20 RS |
551 | a[0] = a1; |
552 | a[1] = a2; | |
553 | a[2] = a3; | |
a2889657 | 554 | |
73af359d | 555 | len = doprnt (FRAME_MESSAGE_BUF (f), |
1c9241f5 | 556 | FRAME_MESSAGE_BUF_SIZE (f), m, (char *)0, 3, a); |
a2889657 | 557 | #else |
73af359d | 558 | len = doprnt (FRAME_MESSAGE_BUF (f), |
1c9241f5 | 559 | FRAME_MESSAGE_BUF_SIZE (f), m, (char *)0, 3, &a1); |
1f40cad2 | 560 | #endif /* NO_ARG_ARRAY */ |
1f40cad2 | 561 | |
73af359d | 562 | message2 (FRAME_MESSAGE_BUF (f), len); |
1f40cad2 JB |
563 | } |
564 | else | |
565 | message1 (0); | |
566 | ||
567 | /* Print should start at the beginning of the message | |
568 | buffer next time. */ | |
569 | message_buf_print = 0; | |
81d478f3 | 570 | } |
a2889657 JB |
571 | } |
572 | } | |
573 | ||
1adc55de | 574 | /* The non-logging version of message. */ |
6c4429a5 KH |
575 | void |
576 | message_nolog (m, a1, a2, a3) | |
577 | char *m; | |
578 | EMACS_INT a1, a2, a3; | |
579 | { | |
580 | Lisp_Object old_log_max; | |
581 | old_log_max = Vmessage_log_max; | |
582 | Vmessage_log_max = Qnil; | |
583 | message (m, a1, a2, a3); | |
584 | Vmessage_log_max = old_log_max; | |
585 | } | |
586 | ||
131f2133 RS |
587 | void |
588 | update_echo_area () | |
589 | { | |
590 | message2 (echo_area_glyphs, echo_area_glyphs_length); | |
591 | } | |
1adc55de | 592 | \f |
a2889657 JB |
593 | static void |
594 | echo_area_display () | |
595 | { | |
596 | register int vpos; | |
44fa5b1e | 597 | FRAME_PTR f; |
73af359d | 598 | Lisp_Object mini_window; |
a2889657 | 599 | |
73af359d RS |
600 | /* Choose the minibuffer window for this display. |
601 | It is the minibuffer window used by the selected frame. */ | |
602 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
603 | /* This is the frame that window is in. */ | |
604 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
a2889657 | 605 | |
44fa5b1e | 606 | if (! FRAME_VISIBLE_P (f)) |
a2889657 | 607 | return; |
a2889657 | 608 | |
44fa5b1e | 609 | if (frame_garbaged) |
a2889657 | 610 | { |
02a9b6e4 | 611 | redraw_garbaged_frames (); |
44fa5b1e | 612 | frame_garbaged = 0; |
a2889657 JB |
613 | } |
614 | ||
615 | if (echo_area_glyphs || minibuf_level == 0) | |
616 | { | |
a2f016e3 RS |
617 | int i; |
618 | ||
73af359d RS |
619 | echo_area_window = mini_window; |
620 | ||
621 | vpos = XFASTINT (XWINDOW (mini_window)->top); | |
44fa5b1e | 622 | get_display_line (f, vpos, 0); |
a2f016e3 RS |
623 | |
624 | /* Make sure the columns that overlap a left-hand scroll bar | |
625 | are always clear. */ | |
626 | for (i = 0; i < FRAME_LEFT_SCROLL_BAR_WIDTH (f); i++) | |
627 | f->desired_glyphs->glyphs[vpos][i] = SPACEGLYPH; | |
628 | ||
73af359d | 629 | display_string (XWINDOW (mini_window), vpos, |
a2889657 | 630 | echo_area_glyphs ? echo_area_glyphs : "", |
90adcf20 | 631 | echo_area_glyphs ? echo_area_glyphs_length : -1, |
73f194f1 | 632 | FRAME_LEFT_SCROLL_BAR_WIDTH (f), |
21e989e3 RS |
633 | 0, 0, 0, |
634 | FRAME_WIDTH (f) + FRAME_LEFT_SCROLL_BAR_WIDTH (f)); | |
a2889657 | 635 | |
b6f0fe04 | 636 | #if 0 /* This just gets in the way. update_frame does the job. */ |
a2889657 | 637 | /* If desired cursor location is on this line, put it at end of text */ |
b5bbc9a5 KH |
638 | if (cursor_in_echo_area) |
639 | FRAME_CURSOR_Y (f) = vpos; | |
44fa5b1e JB |
640 | if (FRAME_CURSOR_Y (f) == vpos) |
641 | FRAME_CURSOR_X (f) = FRAME_DESIRED_GLYPHS (f)->used[vpos]; | |
b6f0fe04 | 642 | #endif |
daa37602 JB |
643 | |
644 | /* Fill the rest of the minibuffer window with blank lines. */ | |
645 | { | |
646 | int i; | |
647 | ||
b2a76982 | 648 | for (i = vpos + 1; |
73af359d | 649 | i < vpos + XFASTINT (XWINDOW (mini_window)->height); i++) |
daa37602 | 650 | { |
44fa5b1e | 651 | get_display_line (f, i, 0); |
b8333774 RS |
652 | /* We don't use FRAME_SCROLL_BAR_WIDTH (f) as the starting |
653 | hpos, because it is good to clear whatever is behind the | |
654 | scroll bar. This does not affect the scroll bar itself. */ | |
e88dcae1 | 655 | display_string (XWINDOW (mini_window), i, |
73f194f1 | 656 | "", 0, |
b8333774 RS |
657 | 0, 0, 0, |
658 | 0, FRAME_WIDTH (f) + FRAME_SCROLL_BAR_WIDTH (f)); | |
daa37602 JB |
659 | } |
660 | } | |
a2889657 | 661 | } |
73af359d | 662 | else if (!EQ (mini_window, selected_window)) |
a2889657 JB |
663 | windows_or_buffers_changed++; |
664 | ||
73af359d | 665 | if (EQ (mini_window, selected_window)) |
a2889657 JB |
666 | this_line_bufpos = 0; |
667 | ||
668 | previous_echo_glyphs = echo_area_glyphs; | |
669 | } | |
1adc55de RS |
670 | \f |
671 | /* Update frame titles. */ | |
96a410bc | 672 | |
8f3343d0 | 673 | #ifdef HAVE_WINDOW_SYSTEM |
d39b6696 KH |
674 | static char frame_title_buf[512]; |
675 | static char *frame_title_ptr; | |
96a410bc | 676 | |
d39b6696 KH |
677 | static int |
678 | store_frame_title (str, mincol, maxcol) | |
679 | char *str; | |
680 | int mincol, maxcol; | |
681 | { | |
682 | char *limit; | |
683 | if (maxcol < 0 || maxcol >= sizeof(frame_title_buf)) | |
684 | maxcol = sizeof (frame_title_buf); | |
685 | limit = &frame_title_buf[maxcol]; | |
686 | while (*str != '\0' && frame_title_ptr < limit) | |
687 | *frame_title_ptr++ = *str++; | |
688 | while (frame_title_ptr < &frame_title_buf[mincol]) | |
689 | *frame_title_ptr++ = ' '; | |
690 | return frame_title_ptr - frame_title_buf; | |
691 | } | |
96a410bc | 692 | |
96a410bc KH |
693 | static void |
694 | x_consider_frame_title (frame) | |
695 | Lisp_Object frame; | |
696 | { | |
d39b6696 KH |
697 | Lisp_Object fmt; |
698 | struct buffer *obuf; | |
699 | int len; | |
96a410bc KH |
700 | FRAME_PTR f = XFRAME (frame); |
701 | ||
8f3343d0 | 702 | if (!(FRAME_WINDOW_P (f) || FRAME_MINIBUF_ONLY_P (f) || f->explicit_name)) |
d39b6696 | 703 | return; |
3450d04c KH |
704 | |
705 | /* Do we have more than one visible frame on this X display? */ | |
706 | { | |
707 | Lisp_Object tail; | |
708 | ||
709 | for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr) | |
710 | { | |
711 | FRAME_PTR tf = XFRAME (XCONS (tail)->car); | |
712 | ||
c9492f08 KH |
713 | if (tf != f && FRAME_KBOARD (tf) == FRAME_KBOARD (f) |
714 | && !FRAME_MINIBUF_ONLY_P (tf) | |
3450d04c KH |
715 | && (FRAME_VISIBLE_P (tf) || FRAME_ICONIFIED_P (tf))) |
716 | break; | |
717 | } | |
718 | ||
719 | multiple_frames = CONSP (tail); | |
720 | } | |
721 | ||
d39b6696 KH |
722 | obuf = current_buffer; |
723 | Fset_buffer (XWINDOW (f->selected_window)->buffer); | |
724 | fmt = (FRAME_ICONIFIED_P (f) ? Vicon_title_format : Vframe_title_format); | |
725 | frame_title_ptr = frame_title_buf; | |
726 | len = display_mode_element (XWINDOW (f->selected_window), 0, 0, 0, | |
727 | 0, sizeof (frame_title_buf), fmt); | |
728 | frame_title_ptr = 0; | |
729 | set_buffer_internal (obuf); | |
730 | /* Set the name only if it's changed. This avoids consing | |
731 | in the common case where it hasn't. (If it turns out that we've | |
732 | already wasted too much time by walking through the list with | |
733 | display_mode_element, then we might need to optimize at a higher | |
734 | level than this.) */ | |
735 | if (! STRINGP (f->name) || XSTRING (f->name)->size != len | |
736 | || bcmp (frame_title_buf, XSTRING (f->name)->data, len) != 0) | |
737 | x_implicitly_set_name (f, make_string (frame_title_buf, len), Qnil); | |
96a410bc | 738 | } |
c7c9ca97 KH |
739 | #else |
740 | #define frame_title_ptr ((char *)0) | |
e39322d9 | 741 | #define store_frame_title(str, mincol, maxcol) 0 |
96a410bc | 742 | #endif |
a2889657 | 743 | \f |
90adcf20 | 744 | /* Prepare for redisplay by updating menu-bar item lists when appropriate. |
87382820 | 745 | This can call eval. */ |
90adcf20 RS |
746 | |
747 | void | |
748 | prepare_menu_bars () | |
749 | { | |
750 | register struct window *w = XWINDOW (selected_window); | |
751 | int all_windows; | |
08b610e4 | 752 | struct gcpro gcpro1, gcpro2; |
90adcf20 | 753 | |
ecf7de9b | 754 | all_windows = (update_mode_lines || buffer_shared > 1 |
28995e67 | 755 | || windows_or_buffers_changed); |
90adcf20 | 756 | |
feb0c42f KH |
757 | /* Update all frame titles based on their buffer names, etc. |
758 | We do this before the menu bars so that the buffer-menu | |
759 | will show the up-to-date frame titles. | |
760 | ||
761 | This used to be done after the menu bars, for a reason that | |
762 | was stated as follows but which I do not understand: | |
763 | "We do this after the menu bars so that the frame will first | |
764 | create its menu bar using the name `emacs' if no other name | |
765 | has yet been specified." | |
766 | I think that is no longer a concern. */ | |
8f3343d0 | 767 | #ifdef HAVE_WINDOW_SYSTEM |
d3f46cff | 768 | if (windows_or_buffers_changed || update_mode_lines) |
feb0c42f KH |
769 | { |
770 | Lisp_Object tail, frame; | |
771 | ||
772 | FOR_EACH_FRAME (tail, frame) | |
773 | if (FRAME_VISIBLE_P (XFRAME (frame)) | |
774 | || FRAME_ICONIFIED_P (XFRAME (frame))) | |
775 | x_consider_frame_title (frame); | |
776 | } | |
777 | #endif | |
778 | ||
90adcf20 RS |
779 | /* Update the menu bar item lists, if appropriate. |
780 | This has to be done before any actual redisplay | |
781 | or generation of display lines. */ | |
782 | if (all_windows) | |
783 | { | |
784 | Lisp_Object tail, frame; | |
a2725ab2 RS |
785 | int count = specpdl_ptr - specpdl; |
786 | ||
9cbab4ff | 787 | record_unwind_protect (Fstore_match_data, Fmatch_data (Qnil, Qnil)); |
90adcf20 RS |
788 | |
789 | FOR_EACH_FRAME (tail, frame) | |
08b610e4 RS |
790 | { |
791 | /* If a window on this frame changed size, | |
792 | report that to the user and clear the size-change flag. */ | |
793 | if (FRAME_WINDOW_SIZES_CHANGED (XFRAME (frame))) | |
794 | { | |
795 | Lisp_Object functions; | |
14510fee RS |
796 | /* Clear flag first in case we get error below. */ |
797 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (frame)) = 0; | |
08b610e4 RS |
798 | functions = Vwindow_size_change_functions; |
799 | GCPRO2 (tail, functions); | |
800 | while (CONSP (functions)) | |
801 | { | |
802 | call1 (XCONS (functions)->car, frame); | |
803 | functions = XCONS (functions)->cdr; | |
804 | } | |
805 | UNGCPRO; | |
08b610e4 RS |
806 | } |
807 | GCPRO1 (tail); | |
a2725ab2 | 808 | update_menu_bar (XFRAME (frame), 0); |
08b610e4 RS |
809 | UNGCPRO; |
810 | } | |
a2725ab2 RS |
811 | |
812 | unbind_to (count, Qnil); | |
90adcf20 | 813 | } |
ecf7de9b | 814 | else |
a2725ab2 | 815 | update_menu_bar (selected_frame, 1); |
cd6dfed6 RS |
816 | |
817 | /* Motif needs this. See comment in xmenu.c. | |
818 | Turn it off when pending_menu_activation is not defined. */ | |
819 | #ifdef USE_X_TOOLKIT | |
820 | pending_menu_activation = 0; | |
821 | #endif | |
90adcf20 RS |
822 | } |
823 | \f | |
44fa5b1e | 824 | /* Do a frame update, taking possible shortcuts into account. |
a2889657 JB |
825 | This is the main external entry point for redisplay. |
826 | ||
827 | If the last redisplay displayed an echo area message and that | |
828 | message is no longer requested, we clear the echo area | |
829 | or bring back the minibuffer if that is in use. | |
830 | ||
90adcf20 RS |
831 | Do not call eval from within this function. |
832 | Calls to eval after the call to echo_area_display would confuse | |
833 | the display_line mechanism and would cause a crash. | |
834 | Calls to eval before that point will work most of the time, | |
835 | but can still lose, because this function | |
836 | can be called from signal handlers; with alarms set up; | |
a2889657 | 837 | or with synchronous processes running. |
90adcf20 | 838 | |
a2889657 JB |
839 | See Fcall_process; if you called it from here, it could be |
840 | entered recursively. */ | |
841 | ||
0d231165 RS |
842 | static int do_verify_charstarts; |
843 | ||
463f6b91 RS |
844 | /* Counter is used to clear the face cache |
845 | no more than once ever 1000 redisplays. */ | |
846 | static int clear_face_cache_count; | |
847 | ||
20de20dc RS |
848 | /* Record the previous terminal frame we displayed. */ |
849 | static FRAME_PTR previous_terminal_frame; | |
850 | ||
a2889657 JB |
851 | void |
852 | redisplay () | |
e9874cee RS |
853 | { |
854 | redisplay_internal (0); | |
855 | } | |
856 | ||
857 | /* If PRESERVE_ECHO_AREA is nonzero, it means this redisplay | |
858 | is not in response to any user action; therefore, we should | |
94a66eea RS |
859 | preserve the echo area. (Actually, our caller does that job.) |
860 | Perhaps in the future avoid recentering windows | |
e9874cee RS |
861 | if it is not necessary; currently that causes some problems. */ |
862 | ||
863 | static void | |
864 | redisplay_internal (preserve_echo_area) | |
865 | int preserve_echo_area; | |
a2889657 JB |
866 | { |
867 | register struct window *w = XWINDOW (selected_window); | |
868 | register int pause; | |
869 | int must_finish = 0; | |
870 | int all_windows; | |
871 | register int tlbufpos, tlendpos; | |
872 | struct position pos; | |
89819bdd | 873 | int number_of_visible_frames; |
a2889657 JB |
874 | |
875 | if (noninteractive) | |
876 | return; | |
877 | ||
15f0cf78 RS |
878 | #ifdef USE_X_TOOLKIT |
879 | if (popup_activated ()) | |
880 | return; | |
881 | #endif | |
882 | ||
8b32d885 RS |
883 | retry: |
884 | ||
fd8ff63d | 885 | if (! FRAME_WINDOW_P (selected_frame) |
20de20dc RS |
886 | && previous_terminal_frame != selected_frame) |
887 | { | |
888 | /* Since frames on an ASCII terminal share the same display area, | |
889 | displaying a different frame means redisplay the whole thing. */ | |
890 | windows_or_buffers_changed++; | |
891 | SET_FRAME_GARBAGED (selected_frame); | |
892 | XSETFRAME (Vterminal_frame, selected_frame); | |
893 | } | |
894 | previous_terminal_frame = selected_frame; | |
20de20dc | 895 | |
d724d989 JB |
896 | /* Set the visible flags for all frames. |
897 | Do this before checking for resized or garbaged frames; they want | |
898 | to know if their frames are visible. | |
899 | See the comment in frame.h for FRAME_SAMPLE_VISIBILITY. */ | |
900 | { | |
35f56f96 | 901 | Lisp_Object tail, frame; |
d724d989 | 902 | |
89819bdd RS |
903 | number_of_visible_frames = 0; |
904 | ||
35f56f96 | 905 | FOR_EACH_FRAME (tail, frame) |
f82aff7c RS |
906 | { |
907 | FRAME_SAMPLE_VISIBILITY (XFRAME (frame)); | |
908 | ||
8e83f802 RS |
909 | if (FRAME_VISIBLE_P (XFRAME (frame))) |
910 | number_of_visible_frames++; | |
89819bdd | 911 | |
f82aff7c RS |
912 | /* Clear out all the display lines in which we will generate the |
913 | glyphs to display. */ | |
914 | init_desired_glyphs (XFRAME (frame)); | |
915 | } | |
d724d989 JB |
916 | } |
917 | ||
44fa5b1e | 918 | /* Notice any pending interrupt request to change frame size. */ |
a2889657 JB |
919 | do_pending_window_change (); |
920 | ||
44fa5b1e | 921 | if (frame_garbaged) |
a2889657 | 922 | { |
02a9b6e4 | 923 | redraw_garbaged_frames (); |
44fa5b1e | 924 | frame_garbaged = 0; |
a2889657 JB |
925 | } |
926 | ||
f82aff7c RS |
927 | prepare_menu_bars (); |
928 | ||
28995e67 | 929 | if (windows_or_buffers_changed) |
a2889657 JB |
930 | update_mode_lines++; |
931 | ||
538f13d4 RS |
932 | /* Detect case that we need to write or remove a star in the mode line. */ |
933 | if ((SAVE_MODIFF < MODIFF) != !NILP (w->last_had_star)) | |
a2889657 JB |
934 | { |
935 | w->update_mode_line = Qt; | |
936 | if (buffer_shared > 1) | |
937 | update_mode_lines++; | |
938 | } | |
939 | ||
28995e67 RS |
940 | /* If %c is in use, update it if needed. */ |
941 | if (!NILP (w->column_number_displayed) | |
942 | /* This alternative quickly identifies a common case | |
943 | where no change is needed. */ | |
944 | && !(PT == XFASTINT (w->last_point) | |
8850a573 RS |
945 | && XFASTINT (w->last_modified) >= MODIFF |
946 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF) | |
28995e67 RS |
947 | && XFASTINT (w->column_number_displayed) != current_column ()) |
948 | w->update_mode_line = Qt; | |
949 | ||
44fa5b1e | 950 | FRAME_SCROLL_BOTTOM_VPOS (XFRAME (w->frame)) = -1; |
a2889657 JB |
951 | |
952 | all_windows = update_mode_lines || buffer_shared > 1; | |
a2889657 JB |
953 | |
954 | /* If specs for an arrow have changed, do thorough redisplay | |
955 | to ensure we remove any arrow that should no longer exist. */ | |
ded34426 JB |
956 | if (! EQ (Voverlay_arrow_position, last_arrow_position) |
957 | || ! EQ (Voverlay_arrow_string, last_arrow_string)) | |
28995e67 | 958 | all_windows = 1; |
a2889657 | 959 | |
90adcf20 RS |
960 | /* Normally the message* functions will have already displayed and |
961 | updated the echo area, but the frame may have been trashed, or | |
962 | the update may have been preempted, so display the echo area | |
963 | again here. */ | |
964 | if (echo_area_glyphs || previous_echo_glyphs) | |
965 | { | |
966 | echo_area_display (); | |
967 | must_finish = 1; | |
968 | } | |
969 | ||
bd66d1ba RS |
970 | /* If showing region, and mark has changed, must redisplay whole window. */ |
971 | if (((!NILP (Vtransient_mark_mode) | |
972 | && !NILP (XBUFFER (w->buffer)->mark_active)) | |
973 | != !NILP (w->region_showing)) | |
82d04750 JB |
974 | || (!NILP (w->region_showing) |
975 | && !EQ (w->region_showing, | |
976 | Fmarker_position (XBUFFER (w->buffer)->mark)))) | |
bd66d1ba RS |
977 | this_line_bufpos = -1; |
978 | ||
a2889657 JB |
979 | tlbufpos = this_line_bufpos; |
980 | tlendpos = this_line_endpos; | |
265a9e55 | 981 | if (!all_windows && tlbufpos > 0 && NILP (w->update_mode_line) |
73af359d | 982 | && !current_buffer->clip_changed |
44fa5b1e | 983 | && FRAME_VISIBLE_P (XFRAME (w->frame)) |
a2889657 JB |
984 | /* Make sure recorded data applies to current buffer, etc */ |
985 | && this_line_buffer == current_buffer | |
986 | && current_buffer == XBUFFER (w->buffer) | |
265a9e55 | 987 | && NILP (w->force_start) |
a2889657 | 988 | /* Point must be on the line that we have info recorded about */ |
ae3b1442 KH |
989 | && PT >= tlbufpos |
990 | && PT <= Z - tlendpos | |
a2889657 JB |
991 | /* All text outside that line, including its final newline, |
992 | must be unchanged */ | |
8850a573 RS |
993 | && ((XFASTINT (w->last_modified) >= MODIFF |
994 | && (XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF)) | |
a2889657 JB |
995 | || (beg_unchanged >= tlbufpos - 1 |
996 | && GPT >= tlbufpos | |
05ba02eb JB |
997 | /* If selective display, can't optimize |
998 | if the changes start at the beginning of the line. */ | |
e24c997d | 999 | && ((INTEGERP (current_buffer->selective_display) |
05ba02eb JB |
1000 | && XINT (current_buffer->selective_display) > 0 |
1001 | ? (beg_unchanged >= tlbufpos | |
1002 | && GPT > tlbufpos) | |
1003 | : 1)) | |
a2889657 JB |
1004 | && end_unchanged >= tlendpos |
1005 | && Z - GPT >= tlendpos))) | |
1006 | { | |
1c9241f5 | 1007 | if (tlbufpos > BEGV && FETCH_BYTE (tlbufpos - 1) != '\n' |
a2889657 | 1008 | && (tlbufpos == ZV |
1c9241f5 | 1009 | || FETCH_BYTE (tlbufpos) == '\n')) |
a2889657 JB |
1010 | /* Former continuation line has disappeared by becoming empty */ |
1011 | goto cancel; | |
1012 | else if (XFASTINT (w->last_modified) < MODIFF | |
8850a573 | 1013 | || XFASTINT (w->last_overlay_modified) < OVERLAY_MODIFF |
a2889657 JB |
1014 | || MINI_WINDOW_P (w)) |
1015 | { | |
1c9241f5 KH |
1016 | /* We have to handle the case of continuation around a |
1017 | wide-column character (See the comment in indent.c around | |
1018 | line 885). | |
1019 | ||
1020 | For instance, in the following case: | |
1021 | ||
1022 | -------- Insert -------- | |
1023 | K_A_N_\\ `a' K_A_N_a\ `X_' are wide-column chars. | |
1024 | J_I_ ==> J_I_ `^^' are cursors. | |
1025 | ^^ ^^ | |
1026 | -------- -------- | |
1027 | ||
1028 | As we have to redraw the line above, we should goto cancel. */ | |
1029 | ||
1030 | struct position val; | |
1031 | int prevline; | |
1032 | ||
1033 | prevline = find_next_newline (tlbufpos, -1); | |
1034 | val = *compute_motion (prevline, 0, | |
1035 | XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0, | |
1036 | 0, | |
1037 | tlbufpos, | |
1038 | 1 << (BITS_PER_SHORT - 1), | |
1039 | 1 << (BITS_PER_SHORT - 1), | |
1040 | window_internal_width (w) - 1, | |
1041 | XINT (w->hscroll), 0, w); | |
1042 | if (val.hpos != this_line_start_hpos) | |
1043 | goto cancel; | |
1044 | ||
a2889657 JB |
1045 | cursor_vpos = -1; |
1046 | overlay_arrow_seen = 0; | |
ca26e1c8 | 1047 | zv_strings_seen = 0; |
a2889657 | 1048 | display_text_line (w, tlbufpos, this_line_vpos, this_line_start_hpos, |
0f9c0ff0 | 1049 | pos_tab_offset (w, tlbufpos), 0); |
a2889657 JB |
1050 | /* If line contains point, is not continued, |
1051 | and ends at same distance from eob as before, we win */ | |
1052 | if (cursor_vpos >= 0 && this_line_bufpos | |
1053 | && this_line_endpos == tlendpos) | |
1054 | { | |
0d231165 RS |
1055 | /* If this is not the window's last line, |
1056 | we must adjust the charstarts of the lines below. */ | |
1057 | if (this_line_vpos + 1 | |
1058 | < XFASTINT (w->top) + window_internal_height (w)) | |
85bcef6c | 1059 | { |
73f194f1 | 1060 | int left = WINDOW_LEFT_MARGIN (w); |
85bcef6c RS |
1061 | int *charstart_next_line |
1062 | = FRAME_CURRENT_GLYPHS (XFRAME (WINDOW_FRAME (w)))->charstarts[this_line_vpos + 1]; | |
85bcef6c RS |
1063 | int adjust; |
1064 | ||
1065 | if (Z - tlendpos == ZV) | |
1066 | /* This line ends at end of (accessible part of) buffer. | |
1067 | There is no newline to count. */ | |
1068 | adjust = Z - tlendpos - charstart_next_line[left]; | |
1069 | else | |
1070 | /* This line ends in a newline. | |
1071 | Must take account of the newline and the rest of the | |
1072 | text that follows. */ | |
1073 | adjust = Z - tlendpos + 1 - charstart_next_line[left]; | |
1074 | ||
1075 | adjust_window_charstarts (w, this_line_vpos, adjust); | |
1076 | } | |
46db8486 | 1077 | |
73f194f1 | 1078 | if (!WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1079 | preserve_other_columns (w); |
1080 | goto update; | |
1081 | } | |
1082 | else | |
1083 | goto cancel; | |
1084 | } | |
b6f0fe04 RS |
1085 | else if (PT == XFASTINT (w->last_point) |
1086 | /* Make sure the cursor was last displayed | |
1087 | in this window. Otherwise we have to reposition it. */ | |
1088 | && XINT (w->top) <= FRAME_CURSOR_Y (selected_frame) | |
1089 | && (XINT (w->top) + XINT (w->height) | |
1090 | > FRAME_CURSOR_Y (selected_frame))) | |
a2889657 JB |
1091 | { |
1092 | if (!must_finish) | |
1093 | { | |
1094 | do_pending_window_change (); | |
1095 | return; | |
1096 | } | |
1097 | goto update; | |
1098 | } | |
8b51f1e3 KH |
1099 | /* If highlighting the region, or if the cursor is in the echo area, |
1100 | then we can't just move the cursor. */ | |
bd66d1ba RS |
1101 | else if (! (!NILP (Vtransient_mark_mode) |
1102 | && !NILP (current_buffer->mark_active)) | |
293a54ce RS |
1103 | && (w == XWINDOW (current_buffer->last_selected_window) |
1104 | || highlight_nonselected_windows) | |
8b51f1e3 KH |
1105 | && NILP (w->region_showing) |
1106 | && !cursor_in_echo_area) | |
a2889657 JB |
1107 | { |
1108 | pos = *compute_motion (tlbufpos, 0, | |
1109 | XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0, | |
ca26e1c8 | 1110 | 0, |
68be917d | 1111 | PT, 2, - (1 << (BITS_PER_SHORT - 1)), |
b1d1124b | 1112 | window_internal_width (w) - 1, |
de3e8b15 | 1113 | XINT (w->hscroll), |
e37f06d7 | 1114 | pos_tab_offset (w, tlbufpos), w); |
a2889657 JB |
1115 | if (pos.vpos < 1) |
1116 | { | |
210e752f | 1117 | int width = window_internal_width (w) - 1; |
44fa5b1e | 1118 | FRAME_CURSOR_X (selected_frame) |
73f194f1 | 1119 | = WINDOW_LEFT_MARGIN (w) + minmax (0, pos.hpos, width); |
44fa5b1e | 1120 | FRAME_CURSOR_Y (selected_frame) = this_line_vpos; |
a2889657 JB |
1121 | goto update; |
1122 | } | |
1123 | else | |
1124 | goto cancel; | |
1125 | } | |
1126 | cancel: | |
1127 | /* Text changed drastically or point moved off of line */ | |
44fa5b1e | 1128 | cancel_line (this_line_vpos, selected_frame); |
a2889657 JB |
1129 | } |
1130 | ||
1131 | this_line_bufpos = 0; | |
1132 | all_windows |= buffer_shared > 1; | |
1133 | ||
463f6b91 RS |
1134 | clear_face_cache_count++; |
1135 | ||
a2889657 JB |
1136 | if (all_windows) |
1137 | { | |
35f56f96 | 1138 | Lisp_Object tail, frame; |
a2889657 | 1139 | |
87485d6f | 1140 | #ifdef HAVE_FACES |
463f6b91 RS |
1141 | /* Clear the face cache, only when we do a full redisplay |
1142 | and not too often either. */ | |
1143 | if (clear_face_cache_count > 1000) | |
1144 | { | |
1145 | clear_face_cache (); | |
1146 | clear_face_cache_count = 0; | |
1147 | } | |
31b24551 JB |
1148 | #endif |
1149 | ||
a2889657 | 1150 | /* Recompute # windows showing selected buffer. |
8de2d90b | 1151 | This will be incremented each time such a window is displayed. */ |
a2889657 JB |
1152 | buffer_shared = 0; |
1153 | ||
35f56f96 | 1154 | FOR_EACH_FRAME (tail, frame) |
30c566e4 | 1155 | { |
35f56f96 | 1156 | FRAME_PTR f = XFRAME (frame); |
fd8ff63d | 1157 | if (FRAME_WINDOW_P (f) || f == selected_frame) |
9769686d | 1158 | { |
35f56f96 | 1159 | |
9769686d RS |
1160 | /* Mark all the scroll bars to be removed; we'll redeem the ones |
1161 | we want when we redisplay their windows. */ | |
1162 | if (condemn_scroll_bars_hook) | |
1163 | (*condemn_scroll_bars_hook) (f); | |
30c566e4 | 1164 | |
9769686d | 1165 | if (FRAME_VISIBLE_P (f)) |
89819bdd | 1166 | redisplay_windows (FRAME_ROOT_WINDOW (f), preserve_echo_area); |
30c566e4 | 1167 | |
9769686d RS |
1168 | /* Any scroll bars which redisplay_windows should have nuked |
1169 | should now go away. */ | |
1170 | if (judge_scroll_bars_hook) | |
1171 | (*judge_scroll_bars_hook) (f); | |
1172 | } | |
30c566e4 | 1173 | } |
a2889657 | 1174 | } |
44fa5b1e | 1175 | else if (FRAME_VISIBLE_P (selected_frame)) |
a2889657 | 1176 | { |
e9874cee | 1177 | redisplay_window (selected_window, 1, preserve_echo_area); |
73f194f1 | 1178 | if (!WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1179 | preserve_other_columns (w); |
1180 | } | |
1181 | ||
1182 | update: | |
1183 | /* Prevent various kinds of signals during display update. | |
1184 | stdio is not robust about handling signals, | |
1185 | which can cause an apparent I/O error. */ | |
1186 | if (interrupt_input) | |
1187 | unrequest_sigio (); | |
1188 | stop_polling (); | |
1189 | ||
a2889657 JB |
1190 | if (all_windows) |
1191 | { | |
1192 | Lisp_Object tail; | |
1193 | ||
1194 | pause = 0; | |
1195 | ||
44fa5b1e | 1196 | for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr) |
a2889657 | 1197 | { |
44fa5b1e | 1198 | FRAME_PTR f; |
a2889657 | 1199 | |
e24c997d | 1200 | if (!FRAMEP (XCONS (tail)->car)) |
a2889657 JB |
1201 | continue; |
1202 | ||
44fa5b1e | 1203 | f = XFRAME (XCONS (tail)->car); |
1af9f229 | 1204 | |
fd8ff63d | 1205 | if ((FRAME_WINDOW_P (f) || f == selected_frame) |
1af9f229 | 1206 | && FRAME_VISIBLE_P (f)) |
a2889657 | 1207 | { |
44fa5b1e | 1208 | pause |= update_frame (f, 0, 0); |
a2889657 | 1209 | if (!pause) |
efc63ef0 RS |
1210 | { |
1211 | mark_window_display_accurate (f->root_window, 1); | |
1212 | if (frame_up_to_date_hook != 0) | |
1213 | (*frame_up_to_date_hook) (f); | |
1214 | } | |
a2889657 JB |
1215 | } |
1216 | } | |
1217 | } | |
1218 | else | |
6e8290aa | 1219 | { |
44fa5b1e JB |
1220 | if (FRAME_VISIBLE_P (selected_frame)) |
1221 | pause = update_frame (selected_frame, 0, 0); | |
4d641a15 KH |
1222 | else |
1223 | pause = 0; | |
d724d989 | 1224 | |
8de2d90b | 1225 | /* We may have called echo_area_display at the top of this |
44fa5b1e JB |
1226 | function. If the echo area is on another frame, that may |
1227 | have put text on a frame other than the selected one, so the | |
1228 | above call to update_frame would not have caught it. Catch | |
8de2d90b JB |
1229 | it here. */ |
1230 | { | |
84faf44c RS |
1231 | Lisp_Object mini_window; |
1232 | FRAME_PTR mini_frame; | |
1233 | ||
1234 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
1235 | mini_frame = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
8de2d90b | 1236 | |
fd8ff63d | 1237 | if (mini_frame != selected_frame && FRAME_WINDOW_P (mini_frame)) |
44fa5b1e | 1238 | pause |= update_frame (mini_frame, 0, 0); |
8de2d90b | 1239 | } |
6e8290aa | 1240 | } |
a2889657 | 1241 | |
44fa5b1e | 1242 | /* If frame does not match, prevent doing single-line-update next time. |
a2889657 JB |
1243 | Also, don't forget to check every line to update the arrow. */ |
1244 | if (pause) | |
1245 | { | |
1246 | this_line_bufpos = 0; | |
265a9e55 | 1247 | if (!NILP (last_arrow_position)) |
a2889657 JB |
1248 | { |
1249 | last_arrow_position = Qt; | |
1250 | last_arrow_string = Qt; | |
1251 | } | |
44fa5b1e | 1252 | /* If we pause after scrolling, some lines in current_frame |
a2889657 JB |
1253 | may be null, so preserve_other_columns won't be able to |
1254 | preserve all the vertical-bar separators. So, avoid using it | |
1255 | in that case. */ | |
73f194f1 | 1256 | if (!WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1257 | update_mode_lines = 1; |
1258 | } | |
1259 | ||
44fa5b1e | 1260 | /* Now text on frame agrees with windows, so |
a2889657 JB |
1261 | put info into the windows for partial redisplay to follow */ |
1262 | ||
1263 | if (!pause) | |
1264 | { | |
1265 | register struct buffer *b = XBUFFER (w->buffer); | |
1266 | ||
1267 | blank_end_of_window = 0; | |
a2889657 | 1268 | unchanged_modified = BUF_MODIFF (b); |
8850a573 | 1269 | overlay_unchanged_modified = BUF_OVERLAY_MODIFF (b); |
a2889657 JB |
1270 | beg_unchanged = BUF_GPT (b) - BUF_BEG (b); |
1271 | end_unchanged = BUF_Z (b) - BUF_GPT (b); | |
1272 | ||
c2213350 KH |
1273 | XSETFASTINT (w->last_point, BUF_PT (b)); |
1274 | XSETFASTINT (w->last_point_x, FRAME_CURSOR_X (selected_frame)); | |
1275 | XSETFASTINT (w->last_point_y, FRAME_CURSOR_Y (selected_frame)); | |
a2889657 JB |
1276 | |
1277 | if (all_windows) | |
11e82b76 | 1278 | mark_window_display_accurate (FRAME_ROOT_WINDOW (selected_frame), 1); |
a2889657 JB |
1279 | else |
1280 | { | |
28995e67 | 1281 | b->clip_changed = 0; |
a2889657 | 1282 | w->update_mode_line = Qnil; |
c2213350 | 1283 | XSETFASTINT (w->last_modified, BUF_MODIFF (b)); |
8850a573 | 1284 | XSETFASTINT (w->last_overlay_modified, BUF_OVERLAY_MODIFF (b)); |
538f13d4 RS |
1285 | w->last_had_star |
1286 | = (BUF_MODIFF (XBUFFER (w->buffer)) > BUF_SAVE_MODIFF (XBUFFER (w->buffer)) | |
1287 | ? Qt : Qnil); | |
3ee4159a RS |
1288 | |
1289 | /* Record if we are showing a region, so can make sure to | |
1290 | update it fully at next redisplay. */ | |
1291 | w->region_showing = (!NILP (Vtransient_mark_mode) | |
293a54ce RS |
1292 | && (w == XWINDOW (current_buffer->last_selected_window) |
1293 | || highlight_nonselected_windows) | |
3ee4159a RS |
1294 | && !NILP (XBUFFER (w->buffer)->mark_active) |
1295 | ? Fmarker_position (XBUFFER (w->buffer)->mark) | |
1296 | : Qnil); | |
1297 | ||
d2f84654 | 1298 | w->window_end_valid = w->buffer; |
a2889657 JB |
1299 | last_arrow_position = Voverlay_arrow_position; |
1300 | last_arrow_string = Voverlay_arrow_string; | |
0d231165 RS |
1301 | if (do_verify_charstarts) |
1302 | verify_charstarts (w); | |
efc63ef0 RS |
1303 | if (frame_up_to_date_hook != 0) |
1304 | (*frame_up_to_date_hook) (selected_frame); | |
a2889657 JB |
1305 | } |
1306 | update_mode_lines = 0; | |
1307 | windows_or_buffers_changed = 0; | |
1308 | } | |
1309 | ||
1310 | /* Start SIGIO interrupts coming again. | |
1311 | Having them off during the code above | |
1312 | makes it less likely one will discard output, | |
1313 | but not impossible, since there might be stuff | |
1314 | in the system buffer here. | |
1315 | But it is much hairier to try to do anything about that. */ | |
1316 | ||
1317 | if (interrupt_input) | |
1318 | request_sigio (); | |
1319 | start_polling (); | |
1320 | ||
11c52c4f RS |
1321 | /* If something has become visible now which was not before, |
1322 | redisplay again, so that we get them. */ | |
1323 | if (!pause) | |
1324 | { | |
1325 | Lisp_Object tail, frame; | |
1326 | int new_count = 0; | |
1327 | ||
1328 | FOR_EACH_FRAME (tail, frame) | |
1329 | { | |
1330 | int this_is_visible = 0; | |
8e83f802 RS |
1331 | |
1332 | if (XFRAME (frame)->visible) | |
1333 | this_is_visible = 1; | |
1334 | FRAME_SAMPLE_VISIBILITY (XFRAME (frame)); | |
1335 | if (XFRAME (frame)->visible) | |
1336 | this_is_visible = 1; | |
11c52c4f RS |
1337 | |
1338 | if (this_is_visible) | |
1339 | new_count++; | |
1340 | } | |
1341 | ||
89819bdd | 1342 | if (new_count != number_of_visible_frames) |
11c52c4f RS |
1343 | windows_or_buffers_changed++; |
1344 | } | |
1345 | ||
44fa5b1e | 1346 | /* Change frame size now if a change is pending. */ |
a2889657 | 1347 | do_pending_window_change (); |
d8e242fd | 1348 | |
8b32d885 RS |
1349 | /* If we just did a pending size change, or have additional |
1350 | visible frames, redisplay again. */ | |
3c8c72e0 | 1351 | if (windows_or_buffers_changed && !pause) |
8b32d885 | 1352 | goto retry; |
a2889657 JB |
1353 | } |
1354 | ||
1355 | /* Redisplay, but leave alone any recent echo area message | |
1356 | unless another message has been requested in its place. | |
1357 | ||
1358 | This is useful in situations where you need to redisplay but no | |
1359 | user action has occurred, making it inappropriate for the message | |
1360 | area to be cleared. See tracking_off and | |
1361 | wait_reading_process_input for examples of these situations. */ | |
1362 | ||
1363 | redisplay_preserve_echo_area () | |
1364 | { | |
1365 | if (echo_area_glyphs == 0 && previous_echo_glyphs != 0) | |
1366 | { | |
1367 | echo_area_glyphs = previous_echo_glyphs; | |
e9874cee | 1368 | redisplay_internal (1); |
a2889657 JB |
1369 | echo_area_glyphs = 0; |
1370 | } | |
1371 | else | |
e9874cee | 1372 | redisplay_internal (1); |
a2889657 JB |
1373 | } |
1374 | ||
1375 | void | |
1376 | mark_window_display_accurate (window, flag) | |
1377 | Lisp_Object window; | |
1378 | int flag; | |
1379 | { | |
1380 | register struct window *w; | |
1381 | ||
265a9e55 | 1382 | for (;!NILP (window); window = w->next) |
a2889657 | 1383 | { |
e24c997d | 1384 | if (!WINDOWP (window)) abort (); |
a2889657 JB |
1385 | w = XWINDOW (window); |
1386 | ||
265a9e55 | 1387 | if (!NILP (w->buffer)) |
bd66d1ba | 1388 | { |
c2213350 KH |
1389 | XSETFASTINT (w->last_modified, |
1390 | !flag ? 0 : BUF_MODIFF (XBUFFER (w->buffer))); | |
8850a573 RS |
1391 | XSETFASTINT (w->last_overlay_modified, |
1392 | !flag ? 0 : BUF_OVERLAY_MODIFF (XBUFFER (w->buffer))); | |
538f13d4 RS |
1393 | w->last_had_star |
1394 | = (BUF_MODIFF (XBUFFER (w->buffer)) > BUF_SAVE_MODIFF (XBUFFER (w->buffer)) | |
1395 | ? Qt : Qnil); | |
bd66d1ba RS |
1396 | |
1397 | /* Record if we are showing a region, so can make sure to | |
1398 | update it fully at next redisplay. */ | |
1399 | w->region_showing = (!NILP (Vtransient_mark_mode) | |
293a54ce RS |
1400 | && (w == XWINDOW (current_buffer->last_selected_window) |
1401 | || highlight_nonselected_windows) | |
bd66d1ba RS |
1402 | && !NILP (XBUFFER (w->buffer)->mark_active) |
1403 | ? Fmarker_position (XBUFFER (w->buffer)->mark) | |
1404 | : Qnil); | |
1405 | } | |
1406 | ||
d2f84654 | 1407 | w->window_end_valid = w->buffer; |
a2889657 | 1408 | w->update_mode_line = Qnil; |
051e7076 | 1409 | if (!NILP (w->buffer) && flag) |
28995e67 | 1410 | XBUFFER (w->buffer)->clip_changed = 0; |
a2889657 | 1411 | |
265a9e55 | 1412 | if (!NILP (w->vchild)) |
a2889657 | 1413 | mark_window_display_accurate (w->vchild, flag); |
265a9e55 | 1414 | if (!NILP (w->hchild)) |
a2889657 JB |
1415 | mark_window_display_accurate (w->hchild, flag); |
1416 | } | |
1417 | ||
1418 | if (flag) | |
1419 | { | |
1420 | last_arrow_position = Voverlay_arrow_position; | |
1421 | last_arrow_string = Voverlay_arrow_string; | |
1422 | } | |
1423 | else | |
1424 | { | |
1425 | /* t is unequal to any useful value of Voverlay_arrow_... */ | |
1426 | last_arrow_position = Qt; | |
1427 | last_arrow_string = Qt; | |
1428 | } | |
1429 | } | |
1430 | \f | |
ecf7de9b | 1431 | /* Update the menu bar item list for frame F. |
90adcf20 | 1432 | This has to be done before we start to fill in any display lines, |
a2725ab2 RS |
1433 | because it can call eval. |
1434 | ||
1435 | If SAVE_MATCH_DATA is 1, we must save and restore it here. */ | |
90adcf20 RS |
1436 | |
1437 | static void | |
a2725ab2 | 1438 | update_menu_bar (f, save_match_data) |
ecf7de9b | 1439 | FRAME_PTR f; |
a2725ab2 | 1440 | int save_match_data; |
90adcf20 | 1441 | { |
90adcf20 | 1442 | struct buffer *old = current_buffer; |
ecf7de9b RS |
1443 | Lisp_Object window; |
1444 | register struct window *w; | |
a2725ab2 | 1445 | |
ecf7de9b RS |
1446 | window = FRAME_SELECTED_WINDOW (f); |
1447 | w = XWINDOW (window); | |
90adcf20 RS |
1448 | |
1449 | if (update_mode_lines) | |
1450 | w->update_mode_line = Qt; | |
1451 | ||
d1e74921 | 1452 | if (FRAME_WINDOW_P (f) |
d3413a53 | 1453 | ? |
dc937613 | 1454 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
cf074754 | 1455 | FRAME_EXTERNAL_MENU_BAR (f) |
78614721 | 1456 | #else |
cf074754 | 1457 | FRAME_MENU_BAR_LINES (f) > 0 |
78614721 | 1458 | #endif |
d3413a53 | 1459 | : FRAME_MENU_BAR_LINES (f) > 0) |
90adcf20 RS |
1460 | { |
1461 | /* If the user has switched buffers or windows, we need to | |
1462 | recompute to reflect the new bindings. But we'll | |
1463 | recompute when update_mode_lines is set too; that means | |
1464 | that people can use force-mode-line-update to request | |
1465 | that the menu bar be recomputed. The adverse effect on | |
1466 | the rest of the redisplay algorithm is about the same as | |
1467 | windows_or_buffers_changed anyway. */ | |
1468 | if (windows_or_buffers_changed | |
cf074754 | 1469 | || !NILP (w->update_mode_line) |
538f13d4 RS |
1470 | || ((BUF_SAVE_MODIFF (XBUFFER (w->buffer)) |
1471 | < BUF_MODIFF (XBUFFER (w->buffer))) | |
1472 | != !NILP (w->last_had_star)) | |
94bb7f9b KH |
1473 | || ((!NILP (Vtransient_mark_mode) |
1474 | && !NILP (XBUFFER (w->buffer)->mark_active)) | |
1475 | != !NILP (w->region_showing))) | |
90adcf20 RS |
1476 | { |
1477 | struct buffer *prev = current_buffer; | |
a2725ab2 RS |
1478 | int count = specpdl_ptr - specpdl; |
1479 | ||
399164b4 | 1480 | set_buffer_internal_1 (XBUFFER (w->buffer)); |
eac4251c | 1481 | if (save_match_data) |
9cbab4ff | 1482 | record_unwind_protect (Fstore_match_data, Fmatch_data (Qnil, Qnil)); |
399164b4 | 1483 | if (NILP (Voverriding_local_map_menu_flag)) |
d46fb96a KH |
1484 | { |
1485 | specbind (Qoverriding_terminal_local_map, Qnil); | |
1486 | specbind (Qoverriding_local_map, Qnil); | |
1487 | } | |
a2725ab2 | 1488 | |
34acc8e6 KH |
1489 | /* Run the Lucid hook. */ |
1490 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
1491 | /* If it has changed current-menubar from previous value, | |
1492 | really recompute the menubar from the value. */ | |
1493 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
1494 | call0 (Qrecompute_lucid_menubar); | |
e02500d4 | 1495 | safe_run_hooks (Qmenu_bar_update_hook); |
8351baf2 | 1496 | FRAME_MENU_BAR_ITEMS (f) = menu_bar_items (FRAME_MENU_BAR_ITEMS (f)); |
538f13d4 | 1497 | /* Redisplay the menu bar in case we changed it. */ |
8f3343d0 | 1498 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
d1e74921 | 1499 | if (FRAME_WINDOW_P (f)) |
d3413a53 | 1500 | set_frame_menubar (f, 0, 0); |
538f13d4 RS |
1501 | else |
1502 | /* On a terminal screen, the menu bar is an ordinary screen | |
1503 | line, and this makes it get updated. */ | |
1504 | w->update_mode_line = Qt; | |
1505 | #else /* ! (USE_X_TOOLKIT || HAVE_NTGUI) */ | |
1506 | /* In the non-toolkit version, the menu bar is an ordinary screen | |
1507 | line, and this makes it get updated. */ | |
1508 | w->update_mode_line = Qt; | |
1509 | #endif /* ! (USE_X_TOOLKIT || HAVE_NTGUI) */ | |
a2725ab2 RS |
1510 | |
1511 | unbind_to (count, Qnil); | |
399164b4 | 1512 | set_buffer_internal_1 (prev); |
90adcf20 RS |
1513 | } |
1514 | } | |
1515 | } | |
1516 | \f | |
a2889657 JB |
1517 | int do_id = 1; |
1518 | ||
90adcf20 RS |
1519 | /* Redisplay WINDOW and its subwindows and siblings. */ |
1520 | ||
a2889657 | 1521 | static void |
e9874cee | 1522 | redisplay_windows (window, preserve_echo_area) |
a2889657 | 1523 | Lisp_Object window; |
e9874cee | 1524 | int preserve_echo_area; |
a2889657 | 1525 | { |
265a9e55 | 1526 | for (; !NILP (window); window = XWINDOW (window)->next) |
e9874cee | 1527 | redisplay_window (window, 0, preserve_echo_area); |
a2889657 JB |
1528 | } |
1529 | ||
1f1ff51d KH |
1530 | /* Return value in display table DP (Lisp_Char_Table *) for character |
1531 | C. Since a display table doesn't have any parent, we don't have to | |
1532 | follow parent. Do not call this function directly but use the | |
1533 | macro DISP_CHAR_VECTOR. */ | |
1534 | Lisp_Object | |
1535 | disp_char_vector (dp, c) | |
1536 | struct Lisp_Char_Table *dp; | |
1537 | int c; | |
1538 | { | |
1539 | int code[4], i; | |
1540 | Lisp_Object val; | |
1541 | ||
1542 | if (SINGLE_BYTE_CHAR_P (c)) return (dp->contents[c]); | |
1543 | ||
1544 | SPLIT_NON_ASCII_CHAR (c, code[0], code[1], code[2]); | |
1545 | if (code[0] != CHARSET_COMPOSITION) | |
1546 | { | |
1547 | if (code[1] < 32) code[1] = -1; | |
1548 | else if (code[2] < 32) code[2] = -1; | |
1549 | } | |
1550 | /* Here, the possible range of CODE[0] (== charset ID) is | |
1551 | 128..MAX_CHARSET. Since the top level char table contains data | |
1552 | for multibyte characters after 256th element, we must increment | |
1553 | CODE[0] by 128 to get a correct index. */ | |
1554 | code[0] += 128; | |
1555 | code[3] = -1; /* anchor */ | |
1556 | ||
1557 | for (i = 0; code[i] >= 0; i++, dp = XCHAR_TABLE (val)) | |
1558 | { | |
1559 | val = dp->contents[code[i]]; | |
1560 | if (!SUB_CHAR_TABLE_P (val)) | |
1561 | return (NILP (val) ? dp->defalt : val); | |
1562 | } | |
1563 | /* Here, VAL is a sub char table. We return the default value of it. */ | |
1564 | return (dp->defalt); | |
1565 | } | |
1566 | ||
90adcf20 RS |
1567 | /* Redisplay window WINDOW and its subwindows. */ |
1568 | ||
a2889657 | 1569 | static void |
e9874cee | 1570 | redisplay_window (window, just_this_one, preserve_echo_area) |
a2889657 | 1571 | Lisp_Object window; |
e9874cee | 1572 | int just_this_one, preserve_echo_area; |
a2889657 JB |
1573 | { |
1574 | register struct window *w = XWINDOW (window); | |
30c566e4 | 1575 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
a2889657 | 1576 | int height; |
ae3b1442 | 1577 | register int lpoint = PT; |
a2889657 | 1578 | struct buffer *old = current_buffer; |
b1d1124b | 1579 | register int width = window_internal_width (w) - 1; |
a2889657 JB |
1580 | register int startp; |
1581 | register int hscroll = XINT (w->hscroll); | |
1582 | struct position pos; | |
ae3b1442 | 1583 | int opoint = PT; |
a2889657 | 1584 | int tem; |
e481f960 | 1585 | int update_mode_line; |
f908610f | 1586 | struct Lisp_Char_Table *dp = window_display_table (w); |
a2889657 | 1587 | |
44fa5b1e | 1588 | if (FRAME_HEIGHT (f) == 0) abort (); /* Some bug zeros some core */ |
a2889657 JB |
1589 | |
1590 | /* If this is a combination window, do its children; that's all. */ | |
1591 | ||
265a9e55 | 1592 | if (!NILP (w->vchild)) |
a2889657 | 1593 | { |
f9c467a3 | 1594 | redisplay_windows (w->vchild, preserve_echo_area); |
a2889657 JB |
1595 | return; |
1596 | } | |
265a9e55 | 1597 | if (!NILP (w->hchild)) |
a2889657 | 1598 | { |
f9c467a3 | 1599 | redisplay_windows (w->hchild, preserve_echo_area); |
a2889657 JB |
1600 | return; |
1601 | } | |
265a9e55 | 1602 | if (NILP (w->buffer)) |
a2889657 | 1603 | abort (); |
8de2d90b JB |
1604 | |
1605 | height = window_internal_height (w); | |
4d641a15 | 1606 | update_mode_line = (!NILP (w->update_mode_line) || update_mode_lines); |
73af359d RS |
1607 | if (XBUFFER (w->buffer)->clip_changed) |
1608 | update_mode_line = 1; | |
8de2d90b JB |
1609 | |
1610 | if (MINI_WINDOW_P (w)) | |
1611 | { | |
73af359d RS |
1612 | if (w == XWINDOW (echo_area_window) && echo_area_glyphs) |
1613 | /* We've already displayed the echo area glyphs in this window. */ | |
1614 | goto finish_scroll_bars; | |
1615 | else if (w != XWINDOW (minibuf_window)) | |
8de2d90b | 1616 | { |
73af359d RS |
1617 | /* This is a minibuffer, but it's not the currently active one, |
1618 | so clear it. */ | |
1619 | int vpos = XFASTINT (w->top); | |
8de2d90b JB |
1620 | int i; |
1621 | ||
1622 | for (i = 0; i < height; i++) | |
1623 | { | |
44fa5b1e | 1624 | get_display_line (f, vpos + i, 0); |
73f194f1 RS |
1625 | display_string (w, vpos + i, "", 0, |
1626 | FRAME_LEFT_SCROLL_BAR_WIDTH (f), | |
1627 | 0, 1, 0, width); | |
8de2d90b JB |
1628 | } |
1629 | ||
88f22aff | 1630 | goto finish_scroll_bars; |
8de2d90b JB |
1631 | } |
1632 | } | |
a2889657 | 1633 | |
a2889657 JB |
1634 | /* Otherwise set up data on this window; select its buffer and point value */ |
1635 | ||
e481f960 | 1636 | if (update_mode_line) |
f72df6ac | 1637 | set_buffer_internal_1 (XBUFFER (w->buffer)); |
e481f960 RS |
1638 | else |
1639 | set_buffer_temp (XBUFFER (w->buffer)); | |
1640 | ||
ae3b1442 | 1641 | opoint = PT; |
a2889657 | 1642 | |
28995e67 RS |
1643 | /* If %c is in mode line, update it if needed. */ |
1644 | if (!NILP (w->column_number_displayed) | |
1645 | /* This alternative quickly identifies a common case | |
1646 | where no change is needed. */ | |
1647 | && !(PT == XFASTINT (w->last_point) | |
8850a573 RS |
1648 | && XFASTINT (w->last_modified) >= MODIFF |
1649 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF) | |
28995e67 RS |
1650 | && XFASTINT (w->column_number_displayed) != current_column ()) |
1651 | update_mode_line = 1; | |
1652 | ||
42640f83 RS |
1653 | /* Count number of windows showing the selected buffer. |
1654 | An indirect buffer counts as its base buffer. */ | |
a2889657 | 1655 | |
42640f83 RS |
1656 | if (!just_this_one) |
1657 | { | |
1658 | struct buffer *current_base, *window_base; | |
1659 | current_base = current_buffer; | |
1660 | window_base = XBUFFER (XWINDOW (selected_window)->buffer); | |
1661 | if (current_base->base_buffer) | |
1662 | current_base = current_base->base_buffer; | |
1663 | if (window_base->base_buffer) | |
1664 | window_base = window_base->base_buffer; | |
1665 | if (current_base == window_base) | |
1666 | buffer_shared++; | |
1667 | } | |
a2889657 JB |
1668 | |
1669 | /* POINT refers normally to the selected window. | |
1670 | For any other window, set up appropriate value. */ | |
1671 | ||
1672 | if (!EQ (window, selected_window)) | |
1673 | { | |
f67a0f51 RS |
1674 | int new_pt = marker_position (w->pointm); |
1675 | if (new_pt < BEGV) | |
a2889657 | 1676 | { |
f67a0f51 RS |
1677 | new_pt = BEGV; |
1678 | Fset_marker (w->pointm, make_number (new_pt), Qnil); | |
a2889657 | 1679 | } |
f67a0f51 | 1680 | else if (new_pt > (ZV - 1)) |
a2889657 | 1681 | { |
f67a0f51 RS |
1682 | new_pt = ZV; |
1683 | Fset_marker (w->pointm, make_number (new_pt), Qnil); | |
a2889657 | 1684 | } |
f67a0f51 RS |
1685 | /* We don't use SET_PT so that the point-motion hooks don't run. */ |
1686 | BUF_PT (current_buffer) = new_pt; | |
a2889657 JB |
1687 | } |
1688 | ||
f4faa47c JB |
1689 | /* If any of the character widths specified in the display table |
1690 | have changed, invalidate the width run cache. It's true that this | |
1691 | may be a bit late to catch such changes, but the rest of | |
1692 | redisplay goes (non-fatally) haywire when the display table is | |
1693 | changed, so why should we worry about doing any better? */ | |
1694 | if (current_buffer->width_run_cache) | |
1695 | { | |
f908610f | 1696 | struct Lisp_Char_Table *disptab = buffer_display_table (); |
f4faa47c JB |
1697 | |
1698 | if (! disptab_matches_widthtab (disptab, | |
1699 | XVECTOR (current_buffer->width_table))) | |
1700 | { | |
1701 | invalidate_region_cache (current_buffer, | |
1702 | current_buffer->width_run_cache, | |
1703 | BEG, Z); | |
1704 | recompute_width_table (current_buffer, disptab); | |
1705 | } | |
1706 | } | |
1707 | ||
a2889657 | 1708 | /* If window-start is screwed up, choose a new one. */ |
a2889657 JB |
1709 | if (XMARKER (w->start)->buffer != current_buffer) |
1710 | goto recenter; | |
1711 | ||
1712 | startp = marker_position (w->start); | |
1713 | ||
cf0df6ab RS |
1714 | /* If someone specified a new starting point but did not insist, |
1715 | check whether it can be used. */ | |
1716 | if (!NILP (w->optional_new_start)) | |
1717 | { | |
1718 | w->optional_new_start = Qnil; | |
1719 | /* Check whether this start pos is usable given where point is. */ | |
1720 | ||
1721 | pos = *compute_motion (startp, 0, | |
1722 | (((EQ (window, minibuf_window) | |
1723 | && startp == BEG) | |
1724 | ? minibuf_prompt_width : 0) | |
1725 | + (hscroll ? 1 - hscroll : 0)), | |
1726 | 0, | |
1c9241f5 KH |
1727 | PT, height, |
1728 | /* BUG FIX: See the comment of | |
1729 | Fpos_visible_in_window_p (window.c). */ | |
1730 | - (1 << (BITS_PER_SHORT - 1)), | |
cf0df6ab RS |
1731 | width, hscroll, pos_tab_offset (w, startp), w); |
1732 | /* If PT does fit on the screen, we will use this start pos, | |
1733 | so do so by setting force_start. */ | |
1734 | if (pos.bufpos == PT) | |
1735 | w->force_start = Qt; | |
1736 | } | |
1737 | ||
8de2d90b | 1738 | /* Handle case where place to start displaying has been specified, |
aa6d10fa | 1739 | unless the specified location is outside the accessible range. */ |
265a9e55 | 1740 | if (!NILP (w->force_start)) |
a2889657 | 1741 | { |
e63574d7 | 1742 | w->force_start = Qnil; |
aa6d10fa RS |
1743 | /* Forget any recorded base line for line number display. */ |
1744 | w->base_line_number = Qnil; | |
75c43375 RS |
1745 | /* Redisplay the mode line. Select the buffer properly for that. |
1746 | Also, run the hook window-scroll-functions | |
1747 | because we have scrolled. */ | |
e63574d7 RS |
1748 | /* Note, we do this after clearing force_start because |
1749 | if there's an error, it is better to forget about force_start | |
1750 | than to get into an infinite loop calling the hook functions | |
1751 | and having them get more errors. */ | |
75c43375 RS |
1752 | if (!update_mode_line |
1753 | || ! NILP (Vwindow_scroll_functions)) | |
e481f960 | 1754 | { |
75c43375 RS |
1755 | Lisp_Object temp[3]; |
1756 | ||
e481f960 | 1757 | set_buffer_temp (old); |
f72df6ac | 1758 | set_buffer_internal_1 (XBUFFER (w->buffer)); |
e481f960 RS |
1759 | update_mode_line = 1; |
1760 | w->update_mode_line = Qt; | |
75c43375 | 1761 | if (! NILP (Vwindow_scroll_functions)) |
3dcd07e3 KH |
1762 | { |
1763 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
1764 | make_number (startp)); | |
1765 | startp = marker_position (w->start); | |
1766 | } | |
e481f960 | 1767 | } |
c2213350 | 1768 | XSETFASTINT (w->last_modified, 0); |
8850a573 | 1769 | XSETFASTINT (w->last_overlay_modified, 0); |
8de2d90b JB |
1770 | if (startp < BEGV) startp = BEGV; |
1771 | if (startp > ZV) startp = ZV; | |
a2889657 JB |
1772 | try_window (window, startp); |
1773 | if (cursor_vpos < 0) | |
1774 | { | |
1775 | /* If point does not appear, move point so it does appear */ | |
1776 | pos = *compute_motion (startp, 0, | |
ca26e1c8 KH |
1777 | (((EQ (window, minibuf_window) |
1778 | && startp == BEG) | |
1779 | ? minibuf_prompt_width : 0) | |
1780 | + (hscroll ? 1 - hscroll : 0)), | |
1781 | 0, | |
1782 | ZV, height / 2, | |
68be917d | 1783 | - (1 << (BITS_PER_SHORT - 1)), |
ca26e1c8 | 1784 | width, hscroll, pos_tab_offset (w, startp), w); |
f67a0f51 | 1785 | BUF_PT (current_buffer) = pos.bufpos; |
90adcf20 | 1786 | if (w != XWINDOW (selected_window)) |
ae3b1442 | 1787 | Fset_marker (w->pointm, make_number (PT), Qnil); |
a2889657 JB |
1788 | else |
1789 | { | |
9d6a6bb9 | 1790 | if (current_buffer == old) |
ae3b1442 | 1791 | lpoint = PT; |
73f194f1 | 1792 | FRAME_CURSOR_X (f) = (WINDOW_LEFT_MARGIN (w) |
210e752f | 1793 | + minmax (0, pos.hpos, width)); |
44fa5b1e | 1794 | FRAME_CURSOR_Y (f) = pos.vpos + XFASTINT (w->top); |
a2889657 | 1795 | } |
df0b5ea1 RS |
1796 | /* If we are highlighting the region, |
1797 | then we just changed the region, so redisplay to show it. */ | |
df0b5ea1 RS |
1798 | if (!NILP (Vtransient_mark_mode) |
1799 | && !NILP (current_buffer->mark_active)) | |
6f27fa9b RS |
1800 | { |
1801 | cancel_my_columns (XWINDOW (window)); | |
1802 | try_window (window, startp); | |
1803 | } | |
a2889657 JB |
1804 | } |
1805 | goto done; | |
1806 | } | |
1807 | ||
1808 | /* Handle case where text has not changed, only point, | |
208aee63 | 1809 | and it has not moved off the frame. */ |
a2889657 JB |
1810 | |
1811 | /* This code is not used for minibuffer for the sake of | |
1812 | the case of redisplaying to replace an echo area message; | |
1813 | since in that case the minibuffer contents per se are usually unchanged. | |
1814 | This code is of no real use in the minibuffer since | |
1815 | the handling of this_line_bufpos, etc., | |
1816 | in redisplay handles the same cases. */ | |
1817 | ||
1818 | if (XFASTINT (w->last_modified) >= MODIFF | |
8850a573 | 1819 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF |
86bee31c | 1820 | && PT >= startp && !current_buffer->clip_changed |
73f194f1 | 1821 | && (just_this_one || WINDOW_FULL_WIDTH_P (w)) |
b1aa6cb3 RS |
1822 | /* If force-mode-line-update was called, really redisplay; |
1823 | that's how redisplay is forced after e.g. changing | |
1824 | buffer-invisibility-spec. */ | |
632ab665 | 1825 | && NILP (w->update_mode_line) |
bd66d1ba RS |
1826 | /* Can't use this case if highlighting a region. */ |
1827 | && !(!NILP (Vtransient_mark_mode) && !NILP (current_buffer->mark_active)) | |
1828 | && NILP (w->region_showing) | |
15495c73 KH |
1829 | /* If end pos is out of date, scroll bar and percentage will be wrong */ |
1830 | && INTEGERP (w->window_end_vpos) | |
1831 | && XFASTINT (w->window_end_vpos) < XFASTINT (w->height) | |
a2889657 JB |
1832 | && !EQ (window, minibuf_window)) |
1833 | { | |
9afd2168 | 1834 | int this_scroll_margin = scroll_margin; |
916848d8 RS |
1835 | int last_point_y = w->last_point_y - XINT (w->top); |
1836 | int last_point_x = (w->last_point_x | |
1837 | + (hscroll ? 1 - hscroll : 0) | |
1838 | - WINDOW_LEFT_MARGIN (w)); | |
9afd2168 | 1839 | |
4cb46737 | 1840 | /* Find where PT is located now on the frame. */ |
916848d8 RS |
1841 | /* Check just_this_one as a way of verifying that the |
1842 | window edges have not changed. */ | |
1843 | if (PT == w->last_point && just_this_one) | |
4cb46737 | 1844 | { |
916848d8 RS |
1845 | pos.hpos = last_point_x; |
1846 | pos.vpos = last_point_y; | |
4cb46737 RS |
1847 | pos.bufpos = PT; |
1848 | } | |
916848d8 | 1849 | else if (PT > w->last_point && w->last_point > startp && just_this_one) |
4cb46737 | 1850 | { |
916848d8 | 1851 | pos = *compute_motion (w->last_point, last_point_y, last_point_x, 0, |
4cb46737 RS |
1852 | PT, height, |
1853 | /* BUG FIX: See the comment of | |
1854 | Fpos_visible_in_window_p (window.c). */ | |
1855 | - (1 << (BITS_PER_SHORT - 1)), | |
1856 | width, hscroll, | |
1857 | pos_tab_offset (w, startp), w); | |
1858 | } | |
1859 | else | |
1860 | { | |
1861 | pos = *compute_motion (startp, 0, (hscroll ? 1 - hscroll : 0), 0, | |
1862 | PT, height, | |
1863 | /* BUG FIX: See the comment of | |
1864 | Fpos_visible_in_window_p (window.c). */ | |
1865 | - (1 << (BITS_PER_SHORT - 1)), | |
1866 | width, hscroll, | |
1867 | pos_tab_offset (w, startp), w); | |
1868 | } | |
a2889657 | 1869 | |
9afd2168 RS |
1870 | /* Don't use a scroll margin that is negative or too large. */ |
1871 | if (this_scroll_margin < 0) | |
1872 | this_scroll_margin = 0; | |
1873 | ||
1874 | if (XINT (w->height) < 4 * scroll_margin) | |
1875 | this_scroll_margin = XINT (w->height) / 4; | |
1876 | ||
1877 | /* If point fits on the screen, and not within the scroll margin, | |
1878 | we are ok. */ | |
1879 | if (pos.vpos < height - this_scroll_margin | |
1880 | && (pos.vpos >= this_scroll_margin || startp == BEGV)) | |
a2889657 | 1881 | { |
44fa5b1e JB |
1882 | /* Ok, point is still on frame */ |
1883 | if (w == XWINDOW (FRAME_SELECTED_WINDOW (f))) | |
a2889657 JB |
1884 | { |
1885 | /* These variables are supposed to be origin 1 */ | |
73f194f1 | 1886 | FRAME_CURSOR_X (f) = (WINDOW_LEFT_MARGIN (w) |
210e752f | 1887 | + minmax (0, pos.hpos, width)); |
44fa5b1e | 1888 | FRAME_CURSOR_Y (f) = pos.vpos + XFASTINT (w->top); |
a2889657 JB |
1889 | } |
1890 | /* This doesn't do the trick, because if a window to the right of | |
1891 | this one must be redisplayed, this does nothing because there | |
44fa5b1e | 1892 | is nothing in DesiredFrame yet, and then the other window is |
a2889657 | 1893 | redisplayed, making likes that are empty in this window's columns. |
73f194f1 | 1894 | if (WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1895 | preserve_my_columns (w); |
1896 | */ | |
1897 | goto done; | |
1898 | } | |
1899 | /* Don't bother trying redisplay with same start; | |
1900 | we already know it will lose */ | |
1901 | } | |
1902 | /* If current starting point was originally the beginning of a line | |
1903 | but no longer is, find a new starting point. */ | |
265a9e55 | 1904 | else if (!NILP (w->start_at_line_beg) |
b16234d8 | 1905 | && !(startp <= BEGV |
1c9241f5 | 1906 | || FETCH_BYTE (startp - 1) == '\n')) |
a2889657 JB |
1907 | { |
1908 | goto recenter; | |
1909 | } | |
1910 | else if (just_this_one && !MINI_WINDOW_P (w) | |
ae3b1442 | 1911 | && PT >= startp |
a2889657 | 1912 | && XFASTINT (w->last_modified) |
14709f21 JB |
1913 | /* or else vmotion on first line won't work. */ |
1914 | && ! NILP (w->start_at_line_beg) | |
a2889657 | 1915 | && ! EQ (w->window_end_valid, Qnil) |
86bee31c | 1916 | && do_id && !current_buffer->clip_changed |
a2889657 | 1917 | && !blank_end_of_window |
73f194f1 | 1918 | && WINDOW_FULL_WIDTH_P (w) |
bd66d1ba RS |
1919 | /* Can't use this case if highlighting a region. */ |
1920 | && !(!NILP (Vtransient_mark_mode) | |
1921 | && !NILP (current_buffer->mark_active)) | |
23c852cb KH |
1922 | /* Don't use try_window_id if newline |
1923 | doesn't display as the end of a line. */ | |
1924 | && !(dp != 0 && VECTORP (DISP_CHAR_VECTOR (dp, '\n'))) | |
bd66d1ba | 1925 | && NILP (w->region_showing) |
a2889657 JB |
1926 | && EQ (last_arrow_position, Voverlay_arrow_position) |
1927 | && EQ (last_arrow_string, Voverlay_arrow_string) | |
44fa5b1e | 1928 | && (tem = try_window_id (FRAME_SELECTED_WINDOW (f))) |
a2889657 JB |
1929 | && tem != -2) |
1930 | { | |
1931 | /* tem > 0 means success. tem == -1 means choose new start. | |
1932 | tem == -2 means try again with same start, | |
1933 | and nothing but whitespace follows the changed stuff. | |
1934 | tem == 0 means try again with same start. */ | |
1935 | if (tem > 0) | |
1936 | goto done; | |
1937 | } | |
1938 | else if (startp >= BEGV && startp <= ZV | |
e9874cee RS |
1939 | && (startp < ZV |
1940 | /* Avoid starting at end of buffer. */ | |
1941 | #if 0 /* This change causes trouble for M-! finger & RET. | |
1942 | It will have to be considered later. */ | |
1943 | || ! EQ (window, selected_window) | |
1944 | /* Don't do the recentering if redisplay | |
1945 | is not for no user action. */ | |
1946 | || preserve_echo_area | |
1947 | #endif | |
1948 | || startp == BEGV | |
8850a573 RS |
1949 | || (XFASTINT (w->last_modified) >= MODIFF |
1950 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF))) | |
a2889657 JB |
1951 | { |
1952 | /* Try to redisplay starting at same place as before */ | |
44fa5b1e | 1953 | /* If point has not moved off frame, accept the results */ |
a2889657 JB |
1954 | try_window (window, startp); |
1955 | if (cursor_vpos >= 0) | |
aa6d10fa | 1956 | { |
28995e67 RS |
1957 | if (!just_this_one || current_buffer->clip_changed |
1958 | || beg_unchanged < startp) | |
aa6d10fa RS |
1959 | /* Forget any recorded base line for line number display. */ |
1960 | w->base_line_number = Qnil; | |
1961 | goto done; | |
1962 | } | |
a2889657 JB |
1963 | else |
1964 | cancel_my_columns (w); | |
1965 | } | |
1966 | ||
c2213350 | 1967 | XSETFASTINT (w->last_modified, 0); |
8850a573 | 1968 | XSETFASTINT (w->last_overlay_modified, 0); |
e481f960 RS |
1969 | /* Redisplay the mode line. Select the buffer properly for that. */ |
1970 | if (!update_mode_line) | |
1971 | { | |
1972 | set_buffer_temp (old); | |
f72df6ac | 1973 | set_buffer_internal_1 (XBUFFER (w->buffer)); |
e481f960 RS |
1974 | update_mode_line = 1; |
1975 | w->update_mode_line = Qt; | |
1976 | } | |
a2889657 JB |
1977 | |
1978 | /* Try to scroll by specified few lines */ | |
1979 | ||
0789adb2 RS |
1980 | if (scroll_conservatively && !current_buffer->clip_changed |
1981 | && startp >= BEGV && startp <= ZV) | |
1982 | { | |
f9c8af06 RS |
1983 | int this_scroll_margin = scroll_margin; |
1984 | ||
1985 | /* Don't use a scroll margin that is negative or too large. */ | |
1986 | if (this_scroll_margin < 0) | |
1987 | this_scroll_margin = 0; | |
1988 | ||
1989 | if (XINT (w->height) < 4 * scroll_margin) | |
1990 | this_scroll_margin = XINT (w->height) / 4; | |
1991 | ||
0789adb2 RS |
1992 | if (PT >= Z - XFASTINT (w->window_end_pos)) |
1993 | { | |
1994 | struct position pos; | |
1995 | pos = *compute_motion (Z - XFASTINT (w->window_end_pos), 0, 0, 0, | |
1996 | PT, XFASTINT (w->height), 0, | |
1997 | XFASTINT (w->width), XFASTINT (w->hscroll), | |
1998 | pos_tab_offset (w, startp), w); | |
1999 | if (pos.vpos > scroll_conservatively) | |
2000 | goto scroll_fail_1; | |
2001 | ||
f9c8af06 | 2002 | pos = *vmotion (startp, pos.vpos + 1 + this_scroll_margin, w); |
0789adb2 RS |
2003 | |
2004 | if (! NILP (Vwindow_scroll_functions)) | |
2005 | { | |
2006 | Fset_marker (w->start, make_number (pos.bufpos), Qnil); | |
2007 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2008 | make_number (pos.bufpos)); | |
2009 | pos.bufpos = marker_position (w->start); | |
2010 | } | |
2011 | try_window (window, pos.bufpos); | |
2012 | if (cursor_vpos >= 0) | |
2013 | { | |
2014 | if (!just_this_one || current_buffer->clip_changed | |
2015 | || beg_unchanged < startp) | |
2016 | /* Forget any recorded base line for line number display. */ | |
2017 | w->base_line_number = Qnil; | |
2018 | goto done; | |
2019 | } | |
2020 | else | |
2021 | cancel_my_columns (w); | |
2022 | } | |
2023 | if (PT < startp) | |
2024 | { | |
2025 | struct position pos; | |
2026 | pos = *compute_motion (PT, 0, 0, 0, | |
2027 | startp, XFASTINT (w->height), 0, | |
2028 | XFASTINT (w->width), XFASTINT (w->hscroll), | |
2029 | pos_tab_offset (w, startp), w); | |
52bc7624 | 2030 | if (pos.vpos > scroll_conservatively) |
0789adb2 RS |
2031 | goto scroll_fail_1; |
2032 | ||
f9c8af06 | 2033 | pos = *vmotion (startp, - pos.vpos - this_scroll_margin, w); |
0789adb2 RS |
2034 | |
2035 | if (! NILP (Vwindow_scroll_functions)) | |
2036 | { | |
2037 | Fset_marker (w->start, make_number (pos.bufpos), Qnil); | |
2038 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2039 | make_number (pos.bufpos)); | |
2040 | pos.bufpos = marker_position (w->start); | |
2041 | } | |
2042 | try_window (window, pos.bufpos); | |
2043 | if (cursor_vpos >= 0) | |
2044 | { | |
2045 | if (!just_this_one || current_buffer->clip_changed | |
2046 | || beg_unchanged < startp) | |
2047 | /* Forget any recorded base line for line number display. */ | |
2048 | w->base_line_number = Qnil; | |
2049 | goto done; | |
2050 | } | |
2051 | else | |
2052 | cancel_my_columns (w); | |
2053 | } | |
2054 | scroll_fail_1: ; | |
2055 | } | |
2056 | ||
2c081c2d KH |
2057 | if (scroll_step && !current_buffer->clip_changed |
2058 | && startp >= BEGV && startp <= ZV) | |
a2889657 | 2059 | { |
ae3b1442 | 2060 | if (PT > startp) |
a2889657 | 2061 | { |
210e752f | 2062 | pos = *vmotion (Z - XFASTINT (w->window_end_pos), scroll_step, w); |
a2889657 JB |
2063 | if (pos.vpos >= height) |
2064 | goto scroll_fail; | |
2065 | } | |
2066 | ||
210e752f | 2067 | pos = *vmotion (startp, (PT < startp ? - scroll_step : scroll_step), w); |
a2889657 | 2068 | |
ae3b1442 | 2069 | if (PT >= pos.bufpos) |
a2889657 | 2070 | { |
75c43375 | 2071 | if (! NILP (Vwindow_scroll_functions)) |
3dcd07e3 | 2072 | { |
4a0f786c | 2073 | Fset_marker (w->start, make_number (pos.bufpos), Qnil); |
3dcd07e3 KH |
2074 | run_hook_with_args_2 (Qwindow_scroll_functions, window, |
2075 | make_number (pos.bufpos)); | |
2076 | pos.bufpos = marker_position (w->start); | |
2077 | } | |
a2889657 JB |
2078 | try_window (window, pos.bufpos); |
2079 | if (cursor_vpos >= 0) | |
aa6d10fa | 2080 | { |
28995e67 RS |
2081 | if (!just_this_one || current_buffer->clip_changed |
2082 | || beg_unchanged < startp) | |
aa6d10fa RS |
2083 | /* Forget any recorded base line for line number display. */ |
2084 | w->base_line_number = Qnil; | |
2085 | goto done; | |
2086 | } | |
a2889657 JB |
2087 | else |
2088 | cancel_my_columns (w); | |
2089 | } | |
2090 | scroll_fail: ; | |
2091 | } | |
2092 | ||
2093 | /* Finally, just choose place to start which centers point */ | |
2094 | ||
2095 | recenter: | |
aa6d10fa RS |
2096 | /* Forget any previously recorded base line for line number display. */ |
2097 | w->base_line_number = Qnil; | |
2098 | ||
210e752f | 2099 | pos = *vmotion (PT, - (height / 2), w); |
e63574d7 RS |
2100 | /* Set startp here explicitly in case that helps avoid an infinite loop |
2101 | in case the window-scroll-functions functions get errors. */ | |
208aee63 | 2102 | Fset_marker (w->start, make_number (pos.bufpos), Qnil); |
75c43375 | 2103 | if (! NILP (Vwindow_scroll_functions)) |
3dcd07e3 KH |
2104 | { |
2105 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2106 | make_number (pos.bufpos)); | |
2107 | pos.bufpos = marker_position (w->start); | |
2108 | } | |
a2889657 JB |
2109 | try_window (window, pos.bufpos); |
2110 | ||
2111 | startp = marker_position (w->start); | |
ca26e1c8 | 2112 | w->start_at_line_beg |
1c9241f5 | 2113 | = (startp == BEGV || FETCH_BYTE (startp - 1) == '\n') ? Qt : Qnil; |
a2889657 JB |
2114 | |
2115 | done: | |
e481f960 | 2116 | if ((update_mode_line |
aa6d10fa RS |
2117 | /* If window not full width, must redo its mode line |
2118 | if the window to its side is being redone */ | |
73f194f1 | 2119 | || (!just_this_one && !WINDOW_FULL_WIDTH_P (w)) |
155ef550 KH |
2120 | || INTEGERP (w->base_line_pos) |
2121 | || (!NILP (w->column_number_displayed) | |
2122 | && XFASTINT (w->column_number_displayed) != current_column ())) | |
a2889657 JB |
2123 | && height != XFASTINT (w->height)) |
2124 | display_mode_line (w); | |
aa6d10fa RS |
2125 | if (! line_number_displayed |
2126 | && ! BUFFERP (w->base_line_pos)) | |
2127 | { | |
2128 | w->base_line_pos = Qnil; | |
2129 | w->base_line_number = Qnil; | |
2130 | } | |
a2889657 | 2131 | |
7ce2c095 | 2132 | /* When we reach a frame's selected window, redo the frame's menu bar. */ |
e481f960 | 2133 | if (update_mode_line |
d1e74921 | 2134 | && (FRAME_WINDOW_P (f) |
d3413a53 | 2135 | ? |
dc937613 | 2136 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
d3413a53 | 2137 | FRAME_EXTERNAL_MENU_BAR (f) |
76412d64 | 2138 | #else |
d3413a53 | 2139 | FRAME_MENU_BAR_LINES (f) > 0 |
76412d64 | 2140 | #endif |
d3413a53 | 2141 | : FRAME_MENU_BAR_LINES (f) > 0) |
7ce2c095 RS |
2142 | && EQ (FRAME_SELECTED_WINDOW (f), window)) |
2143 | display_menu_bar (w); | |
2144 | ||
88f22aff JB |
2145 | finish_scroll_bars: |
2146 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
30c566e4 | 2147 | { |
b1d1124b | 2148 | int start, end, whole; |
30c566e4 | 2149 | |
b1d1124b | 2150 | /* Calculate the start and end positions for the current window. |
3505ea70 JB |
2151 | At some point, it would be nice to choose between scrollbars |
2152 | which reflect the whole buffer size, with special markers | |
2153 | indicating narrowing, and scrollbars which reflect only the | |
2154 | visible region. | |
2155 | ||
b1d1124b JB |
2156 | Note that minibuffers sometimes aren't displaying any text. */ |
2157 | if (! MINI_WINDOW_P (w) | |
2158 | || (w == XWINDOW (minibuf_window) && ! echo_area_glyphs)) | |
2159 | { | |
8a9311d7 | 2160 | whole = ZV - BEGV; |
4d641a15 | 2161 | start = marker_position (w->start) - BEGV; |
b1d1124b JB |
2162 | /* I don't think this is guaranteed to be right. For the |
2163 | moment, we'll pretend it is. */ | |
85f26be9 | 2164 | end = (Z - XINT (w->window_end_pos)) - BEGV; |
3505ea70 JB |
2165 | |
2166 | if (end < start) end = start; | |
8a9311d7 | 2167 | if (whole < (end - start)) whole = end - start; |
b1d1124b JB |
2168 | } |
2169 | else | |
2170 | start = end = whole = 0; | |
30c566e4 | 2171 | |
88f22aff | 2172 | /* Indicate what this scroll bar ought to be displaying now. */ |
7eb9ba41 | 2173 | (*set_vertical_scroll_bar_hook) (w, end - start, whole, start); |
30c566e4 | 2174 | |
88f22aff | 2175 | /* Note that we actually used the scroll bar attached to this window, |
30c566e4 | 2176 | so it shouldn't be deleted at the end of redisplay. */ |
88f22aff | 2177 | (*redeem_scroll_bar_hook) (w); |
30c566e4 | 2178 | } |
b1d1124b | 2179 | |
f67a0f51 | 2180 | BUF_PT (current_buffer) = opoint; |
e481f960 | 2181 | if (update_mode_line) |
f72df6ac | 2182 | set_buffer_internal_1 (old); |
e481f960 RS |
2183 | else |
2184 | set_buffer_temp (old); | |
f67a0f51 | 2185 | BUF_PT (current_buffer) = lpoint; |
a2889657 JB |
2186 | } |
2187 | \f | |
2188 | /* Do full redisplay on one window, starting at position `pos'. */ | |
2189 | ||
2190 | static void | |
2191 | try_window (window, pos) | |
2192 | Lisp_Object window; | |
2193 | register int pos; | |
2194 | { | |
2195 | register struct window *w = XWINDOW (window); | |
2196 | register int height = window_internal_height (w); | |
2197 | register int vpos = XFASTINT (w->top); | |
2198 | register int last_text_vpos = vpos; | |
44fa5b1e | 2199 | FRAME_PTR f = XFRAME (w->frame); |
b1d1124b | 2200 | int width = window_internal_width (w) - 1; |
a2889657 JB |
2201 | struct position val; |
2202 | ||
9cbab4ff RS |
2203 | /* POS should never be out of range! */ |
2204 | if (pos < XBUFFER (w->buffer)->begv | |
2205 | || pos > XBUFFER (w->buffer)->zv) | |
2206 | abort (); | |
2207 | ||
a2889657 JB |
2208 | Fset_marker (w->start, make_number (pos), Qnil); |
2209 | cursor_vpos = -1; | |
2210 | overlay_arrow_seen = 0; | |
ca26e1c8 | 2211 | zv_strings_seen = 0; |
a2889657 | 2212 | val.hpos = XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0; |
0f9c0ff0 | 2213 | val.ovstring_chars_done = 0; |
1c9241f5 | 2214 | val.tab_offset = pos_tab_offset (w, pos); |
a2889657 JB |
2215 | |
2216 | while (--height >= 0) | |
2217 | { | |
1c9241f5 | 2218 | val = *display_text_line (w, pos, vpos, val.hpos, val.tab_offset, |
0f9c0ff0 | 2219 | val.ovstring_chars_done); |
1c9241f5 KH |
2220 | /* The following code is omitted because we maintain tab_offset |
2221 | in VAL. */ | |
2222 | #if 0 | |
a2889657 JB |
2223 | tab_offset += width; |
2224 | if (val.vpos) tab_offset = 0; | |
1c9241f5 | 2225 | #endif /* 0 */ |
a2889657 JB |
2226 | vpos++; |
2227 | if (pos != val.bufpos) | |
642eefc6 RS |
2228 | { |
2229 | int invis = 0; | |
e885523c | 2230 | #ifdef USE_TEXT_PROPERTIES |
642eefc6 RS |
2231 | Lisp_Object invis_prop; |
2232 | invis_prop = Fget_char_property (val.bufpos-1, Qinvisible, window); | |
2233 | invis = TEXT_PROP_MEANS_INVISIBLE (invis_prop); | |
e885523c | 2234 | #endif |
642eefc6 RS |
2235 | |
2236 | last_text_vpos | |
2237 | /* Next line, unless prev line ended in end of buffer with no cr */ | |
2238 | = vpos - (val.vpos | |
1c9241f5 | 2239 | && (FETCH_BYTE (val.bufpos - 1) != '\n' || invis)); |
642eefc6 | 2240 | } |
a2889657 JB |
2241 | pos = val.bufpos; |
2242 | } | |
2243 | ||
2244 | /* If last line is continued in middle of character, | |
44fa5b1e | 2245 | include the split character in the text considered on the frame */ |
a2889657 JB |
2246 | if (val.hpos < (XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0)) |
2247 | pos++; | |
2248 | ||
44fa5b1e | 2249 | /* If bottom just moved off end of frame, change mode line percentage. */ |
a2889657 JB |
2250 | if (XFASTINT (w->window_end_pos) == 0 |
2251 | && Z != pos) | |
2252 | w->update_mode_line = Qt; | |
2253 | ||
44fa5b1e | 2254 | /* Say where last char on frame will be, once redisplay is finished. */ |
c2213350 KH |
2255 | XSETFASTINT (w->window_end_pos, Z - pos); |
2256 | XSETFASTINT (w->window_end_vpos, last_text_vpos - XFASTINT (w->top)); | |
a2889657 JB |
2257 | /* But that is not valid info until redisplay finishes. */ |
2258 | w->window_end_valid = Qnil; | |
2259 | } | |
2260 | \f | |
2261 | /* Try to redisplay when buffer is modified locally, | |
2262 | computing insert/delete line to preserve text outside | |
2263 | the bounds of the changes. | |
2264 | Return 1 if successful, 0 if if cannot tell what to do, | |
2265 | or -1 to tell caller to find a new window start, | |
2266 | or -2 to tell caller to do normal redisplay with same window start. */ | |
2267 | ||
2268 | static int | |
2269 | try_window_id (window) | |
2270 | Lisp_Object window; | |
2271 | { | |
2272 | int pos; | |
2273 | register struct window *w = XWINDOW (window); | |
2274 | register int height = window_internal_height (w); | |
44fa5b1e | 2275 | FRAME_PTR f = XFRAME (w->frame); |
a2889657 JB |
2276 | int top = XFASTINT (w->top); |
2277 | int start = marker_position (w->start); | |
b1d1124b | 2278 | int width = window_internal_width (w) - 1; |
a2889657 JB |
2279 | int hscroll = XINT (w->hscroll); |
2280 | int lmargin = hscroll > 0 ? 1 - hscroll : 0; | |
ca26e1c8 | 2281 | int did_motion; |
a2889657 JB |
2282 | register int vpos; |
2283 | register int i, tem; | |
2284 | int last_text_vpos = 0; | |
2285 | int stop_vpos; | |
e24c997d KH |
2286 | int selective = (INTEGERP (current_buffer->selective_display) |
2287 | ? XINT (current_buffer->selective_display) | |
2288 | : !NILP (current_buffer->selective_display) ? -1 : 0); | |
a2889657 JB |
2289 | |
2290 | struct position val, bp, ep, xp, pp; | |
2291 | int scroll_amount = 0; | |
2292 | int delta; | |
1c9241f5 | 2293 | int epto, old_tick; |
a2889657 JB |
2294 | |
2295 | if (GPT - BEG < beg_unchanged) | |
2296 | beg_unchanged = GPT - BEG; | |
2297 | if (Z - GPT < end_unchanged) | |
2298 | end_unchanged = Z - GPT; | |
2299 | ||
6a1dc7ac | 2300 | if (beg_unchanged + BEG < start) |
a2889657 JB |
2301 | return 0; /* Give up if changes go above top of window */ |
2302 | ||
2303 | /* Find position before which nothing is changed. */ | |
ca26e1c8 | 2304 | bp = *compute_motion (start, 0, lmargin, 0, |
1c9241f5 KH |
2305 | min (ZV, beg_unchanged + BEG), height, |
2306 | /* BUG FIX: See the comment of | |
2307 | Fpos_visible_in_window_p() (window.c). */ | |
2308 | - (1 << (BITS_PER_SHORT - 1)), | |
e37f06d7 | 2309 | width, hscroll, pos_tab_offset (w, start), w); |
a2889657 | 2310 | if (bp.vpos >= height) |
6e8290aa | 2311 | { |
632ab665 | 2312 | if (PT < bp.bufpos) |
6e8290aa | 2313 | { |
67481ae5 RS |
2314 | /* All changes are beyond the window end, and point is on the screen. |
2315 | We don't need to change the text at all. | |
6e8290aa JB |
2316 | But we need to update window_end_pos to account for |
2317 | any change in buffer size. */ | |
ca26e1c8 | 2318 | bp = *compute_motion (start, 0, lmargin, 0, |
1c9241f5 KH |
2319 | ZV, height, |
2320 | /* BUG FIX: See the comment of | |
2321 | Fpos_visible_in_window_p() (window.c). */ | |
2322 | - (1 << (BITS_PER_SHORT - 1)), | |
e37f06d7 | 2323 | width, hscroll, pos_tab_offset (w, start), w); |
c2213350 KH |
2324 | XSETFASTINT (w->window_end_vpos, height); |
2325 | XSETFASTINT (w->window_end_pos, Z - bp.bufpos); | |
4d641a15 | 2326 | goto findpoint; |
6e8290aa JB |
2327 | } |
2328 | return 0; | |
2329 | } | |
a2889657 JB |
2330 | |
2331 | vpos = bp.vpos; | |
2332 | ||
44fa5b1e | 2333 | /* Find beginning of that frame line. Must display from there. */ |
210e752f | 2334 | bp = *vmotion (bp.bufpos, 0, w); |
a2889657 JB |
2335 | |
2336 | pos = bp.bufpos; | |
2337 | val.hpos = lmargin; | |
2338 | if (pos < start) | |
2339 | return -1; | |
2340 | ||
ca26e1c8 | 2341 | did_motion = 0; |
a2889657 | 2342 | /* If about to start displaying at the beginning of a continuation line, |
44fa5b1e | 2343 | really start with previous frame line, in case it was not |
a2889657 | 2344 | continued when last redisplayed */ |
05ba02eb JB |
2345 | if ((bp.contin && bp.bufpos - 1 == beg_unchanged && vpos > 0) |
2346 | || | |
2347 | /* Likewise if we have to worry about selective display. */ | |
9f412332 | 2348 | (selective > 0 && bp.bufpos - 1 == beg_unchanged && vpos > 0)) |
a2889657 | 2349 | { |
210e752f | 2350 | bp = *vmotion (bp.bufpos, -1, w); |
a2889657 JB |
2351 | --vpos; |
2352 | pos = bp.bufpos; | |
2353 | } | |
1c9241f5 | 2354 | val.tab_offset = bp.tab_offset; /* Update tab offset. */ |
a2889657 JB |
2355 | |
2356 | if (bp.contin && bp.hpos != lmargin) | |
2357 | { | |
2358 | val.hpos = bp.prevhpos - width + lmargin; | |
1c9241f5 | 2359 | val.tab_offset = bp.tab_offset + bp.prevhpos - width; |
ca26e1c8 | 2360 | did_motion = 1; |
1c9241f5 | 2361 | DEC_POS (pos); |
a2889657 JB |
2362 | } |
2363 | ||
2364 | bp.vpos = vpos; | |
2365 | ||
2366 | /* Find first visible newline after which no more is changed. */ | |
2367 | tem = find_next_newline (Z - max (end_unchanged, Z - ZV), 1); | |
9f412332 KH |
2368 | if (selective > 0) |
2369 | while (tem < ZV - 1 && (indented_beyond_p (tem, selective))) | |
a2889657 JB |
2370 | tem = find_next_newline (tem, 1); |
2371 | ||
2372 | /* Compute the cursor position after that newline. */ | |
ca26e1c8 | 2373 | ep = *compute_motion (pos, vpos, val.hpos, did_motion, tem, |
68be917d | 2374 | height, - (1 << (BITS_PER_SHORT - 1)), |
1c9241f5 KH |
2375 | width, hscroll, |
2376 | /* We have tab offset in VAL, use it. */ | |
2377 | val.tab_offset, w); | |
a2889657 | 2378 | |
44fa5b1e JB |
2379 | /* If changes reach past the text available on the frame, |
2380 | just display rest of frame. */ | |
a2889657 JB |
2381 | if (ep.bufpos > Z - XFASTINT (w->window_end_pos)) |
2382 | stop_vpos = height; | |
2383 | else | |
2384 | stop_vpos = ep.vpos; | |
2385 | ||
2386 | /* If no newline before ep, the line ep is on includes some changes | |
2387 | that must be displayed. Make sure we don't stop before it. */ | |
2388 | /* Also, if changes reach all the way until ep.bufpos, | |
2389 | it is possible that something was deleted after the | |
2390 | newline before it, so the following line must be redrawn. */ | |
2391 | if (stop_vpos == ep.vpos | |
2392 | && (ep.bufpos == BEGV | |
1c9241f5 | 2393 | || FETCH_BYTE (ep.bufpos - 1) != '\n' |
a2889657 JB |
2394 | || ep.bufpos == Z - end_unchanged)) |
2395 | stop_vpos = ep.vpos + 1; | |
2396 | ||
2397 | cursor_vpos = -1; | |
2398 | overlay_arrow_seen = 0; | |
ca26e1c8 | 2399 | zv_strings_seen = 0; |
a2889657 JB |
2400 | |
2401 | /* If changes do not reach to bottom of window, | |
2402 | figure out how much to scroll the rest of the window */ | |
2403 | if (stop_vpos < height) | |
2404 | { | |
2405 | /* Now determine how far up or down the rest of the window has moved */ | |
ca26e1c8 | 2406 | xp = *compute_motion (ep.bufpos, ep.vpos, ep.hpos, 1, |
a2889657 | 2407 | Z - XFASTINT (w->window_end_pos), |
1c9241f5 KH |
2408 | /* Don't care for VPOS... */ |
2409 | 1 << (BITS_PER_SHORT - 1), | |
2410 | /* ... nor HPOS. */ | |
2411 | 1 << (BITS_PER_SHORT - 1), | |
2412 | width, hscroll, ep.tab_offset, w); | |
a2889657 JB |
2413 | scroll_amount = xp.vpos - XFASTINT (w->window_end_vpos); |
2414 | ||
44fa5b1e | 2415 | /* Is everything on frame below the changes whitespace? |
a2889657 JB |
2416 | If so, no scrolling is really necessary. */ |
2417 | for (i = ep.bufpos; i < xp.bufpos; i++) | |
2418 | { | |
1c9241f5 | 2419 | tem = FETCH_BYTE (i); |
a2889657 JB |
2420 | if (tem != ' ' && tem != '\n' && tem != '\t') |
2421 | break; | |
2422 | } | |
2423 | if (i == xp.bufpos) | |
2424 | return -2; | |
2425 | ||
e8e536a9 KH |
2426 | XSETFASTINT (w->window_end_vpos, |
2427 | XFASTINT (w->window_end_vpos) + scroll_amount); | |
a2889657 | 2428 | |
44fa5b1e | 2429 | /* Before doing any scrolling, verify that point will be on frame. */ |
010a899e | 2430 | if (PT > ep.bufpos && !(PT <= xp.bufpos && xp.vpos < height)) |
a2889657 | 2431 | { |
ae3b1442 | 2432 | if (PT <= xp.bufpos) |
a2889657 | 2433 | { |
ca26e1c8 | 2434 | pp = *compute_motion (ep.bufpos, ep.vpos, ep.hpos, 1, |
68be917d | 2435 | PT, height, - (1 << (BITS_PER_SHORT - 1)), |
1c9241f5 KH |
2436 | width, hscroll, |
2437 | /* We have tab offset in EP, use it. */ | |
2438 | ep.tab_offset, w); | |
a2889657 JB |
2439 | } |
2440 | else | |
2441 | { | |
ca26e1c8 | 2442 | pp = *compute_motion (xp.bufpos, xp.vpos, xp.hpos, 1, |
68be917d | 2443 | PT, height, - (1 << (BITS_PER_SHORT - 1)), |
e37f06d7 | 2444 | width, hscroll, |
1c9241f5 KH |
2445 | /* We have tab offset in XP, use it. */ |
2446 | xp.tab_offset, w); | |
a2889657 | 2447 | } |
ae3b1442 | 2448 | if (pp.bufpos < PT || pp.vpos == height) |
a2889657 JB |
2449 | return 0; |
2450 | cursor_vpos = pp.vpos + top; | |
73f194f1 | 2451 | cursor_hpos = WINDOW_LEFT_MARGIN (w) + minmax (0, pp.hpos, width); |
a2889657 JB |
2452 | } |
2453 | ||
2454 | if (stop_vpos - scroll_amount >= height | |
2455 | || ep.bufpos == xp.bufpos) | |
2456 | { | |
2457 | if (scroll_amount < 0) | |
2458 | stop_vpos -= scroll_amount; | |
2459 | scroll_amount = 0; | |
2460 | /* In this path, we have altered window_end_vpos | |
2461 | and not left it negative. | |
2462 | We must make sure that, in case display is preempted | |
44fa5b1e | 2463 | before the frame changes to reflect what we do here, |
a2889657 | 2464 | further updates will not come to try_window_id |
44fa5b1e | 2465 | and assume the frame and window_end_vpos match. */ |
a2889657 JB |
2466 | blank_end_of_window = 1; |
2467 | } | |
2468 | else if (!scroll_amount) | |
0d231165 RS |
2469 | { |
2470 | /* Even if we don't need to scroll, we must adjust the | |
2471 | charstarts of subsequent lines (that we won't redisplay) | |
2472 | according to the amount of text inserted or deleted. */ | |
2473 | int oldpos = FRAME_CURRENT_GLYPHS (f)->charstarts[ep.vpos + top][0]; | |
2474 | int adjust = ep.bufpos - oldpos; | |
2475 | adjust_window_charstarts (w, ep.vpos + top - 1, adjust); | |
2476 | } | |
a2889657 JB |
2477 | else if (bp.bufpos == Z - end_unchanged) |
2478 | { | |
2479 | /* If reprinting everything is nearly as fast as scrolling, | |
2480 | don't bother scrolling. Can happen if lines are short. */ | |
44fa5b1e | 2481 | if (scroll_cost (f, bp.vpos + top - scroll_amount, |
a2889657 JB |
2482 | top + height - max (0, scroll_amount), |
2483 | scroll_amount) | |
2484 | > xp.bufpos - bp.bufpos - 20) | |
2485 | /* Return "try normal display with same window-start." | |
2486 | Too bad we can't prevent further scroll-thinking. */ | |
2487 | return -2; | |
2488 | /* If pure deletion, scroll up as many lines as possible. | |
2489 | In common case of killing a line, this can save the | |
2490 | following line from being overwritten by scrolling | |
2491 | and therefore having to be redrawn. */ | |
44fa5b1e | 2492 | tem = scroll_frame_lines (f, bp.vpos + top - scroll_amount, |
d1cb44a4 RS |
2493 | top + height - max (0, scroll_amount), |
2494 | scroll_amount, bp.bufpos); | |
d2f84654 RS |
2495 | if (!tem) |
2496 | stop_vpos = height; | |
2497 | else | |
2498 | { | |
2499 | /* scroll_frame_lines did not properly adjust subsequent | |
2500 | lines' charstarts in the case where the text of the | |
2501 | screen line at bp.vpos has changed. | |
2502 | (This can happen in a deletion that ends in mid-line.) | |
8e6208c5 KH |
2503 | To adjust properly, we need to make things consistent |
2504 | at the position ep. | |
d2f84654 RS |
2505 | So do a second adjust to make that happen. |
2506 | Note that stop_vpos >= ep.vpos, so it is sufficient | |
2507 | to update the charstarts for lines at ep.vpos and below. */ | |
2508 | int oldstart | |
2509 | = FRAME_CURRENT_GLYPHS (f)->charstarts[ep.vpos + top][0]; | |
2510 | adjust_window_charstarts (w, ep.vpos + top - 1, | |
2511 | ep.bufpos - oldstart); | |
2512 | } | |
a2889657 JB |
2513 | } |
2514 | else if (scroll_amount) | |
2515 | { | |
2516 | /* If reprinting everything is nearly as fast as scrolling, | |
2517 | don't bother scrolling. Can happen if lines are short. */ | |
2518 | /* Note that if scroll_amount > 0, xp.bufpos - bp.bufpos is an | |
2519 | overestimate of cost of reprinting, since xp.bufpos | |
2520 | would end up below the bottom of the window. */ | |
44fa5b1e | 2521 | if (scroll_cost (f, ep.vpos + top - scroll_amount, |
a2889657 JB |
2522 | top + height - max (0, scroll_amount), |
2523 | scroll_amount) | |
2524 | > xp.bufpos - ep.bufpos - 20) | |
2525 | /* Return "try normal display with same window-start." | |
2526 | Too bad we can't prevent further scroll-thinking. */ | |
2527 | return -2; | |
44fa5b1e | 2528 | tem = scroll_frame_lines (f, ep.vpos + top - scroll_amount, |
a2889657 | 2529 | top + height - max (0, scroll_amount), |
d1cb44a4 | 2530 | scroll_amount, ep.bufpos); |
a2889657 JB |
2531 | if (!tem) stop_vpos = height; |
2532 | } | |
2533 | } | |
2534 | ||
2535 | /* In any case, do not display past bottom of window */ | |
2536 | if (stop_vpos >= height) | |
2537 | { | |
2538 | stop_vpos = height; | |
2539 | scroll_amount = 0; | |
2540 | } | |
2541 | ||
2542 | /* Handle case where pos is before w->start -- | |
2543 | can happen if part of line had been clipped and is not clipped now */ | |
2544 | if (vpos == 0 && pos < marker_position (w->start)) | |
2545 | Fset_marker (w->start, make_number (pos), Qnil); | |
2546 | ||
2547 | /* Redisplay the lines where the text was changed */ | |
2548 | last_text_vpos = vpos; | |
1c9241f5 KH |
2549 | /* The following code is omitted because we maintain tab offset in |
2550 | val.tab_offset. */ | |
2551 | #if 0 | |
a2889657 JB |
2552 | tab_offset = pos_tab_offset (w, pos); |
2553 | /* If we are starting display in mid-character, correct tab_offset | |
2554 | to account for passing the line that that character really starts in. */ | |
2555 | if (val.hpos < lmargin) | |
2556 | tab_offset += width; | |
1c9241f5 | 2557 | #endif /* 0 */ |
d3413a53 | 2558 | old_tick = MODIFF; |
a2889657 JB |
2559 | while (vpos < stop_vpos) |
2560 | { | |
1c9241f5 | 2561 | val = *display_text_line (w, pos, top + vpos++, val.hpos, val.tab_offset, |
0f9c0ff0 | 2562 | val.ovstring_chars_done); |
d3413a53 RS |
2563 | /* If display_text_line ran a hook and changed some text, |
2564 | redisplay all the way to bottom of buffer | |
2565 | So that we show the changes. */ | |
2566 | if (old_tick != MODIFF) | |
2567 | stop_vpos = height; | |
1c9241f5 KH |
2568 | /* The following code is omitted because we maintain tab offset |
2569 | in val.tab_offset. */ | |
2570 | #if 0 | |
a2889657 JB |
2571 | tab_offset += width; |
2572 | if (val.vpos) tab_offset = 0; | |
1c9241f5 | 2573 | #endif |
a2889657 JB |
2574 | if (pos != val.bufpos) |
2575 | last_text_vpos | |
2576 | /* Next line, unless prev line ended in end of buffer with no cr */ | |
1c9241f5 | 2577 | = vpos - (val.vpos && FETCH_BYTE (val.bufpos - 1) != '\n'); |
a2889657 JB |
2578 | pos = val.bufpos; |
2579 | } | |
2580 | ||
2581 | /* There are two cases: | |
2582 | 1) we have displayed down to the bottom of the window | |
2583 | 2) we have scrolled lines below stop_vpos by scroll_amount */ | |
2584 | ||
2585 | if (vpos == height) | |
2586 | { | |
2587 | /* If last line is continued in middle of character, | |
44fa5b1e | 2588 | include the split character in the text considered on the frame */ |
a2889657 JB |
2589 | if (val.hpos < lmargin) |
2590 | val.bufpos++; | |
c2213350 KH |
2591 | XSETFASTINT (w->window_end_vpos, last_text_vpos); |
2592 | XSETFASTINT (w->window_end_pos, Z - val.bufpos); | |
a2889657 JB |
2593 | } |
2594 | ||
2595 | /* If scrolling made blank lines at window bottom, | |
2596 | redisplay to fill those lines */ | |
2597 | if (scroll_amount < 0) | |
2598 | { | |
2599 | /* Don't consider these lines for general-purpose scrolling. | |
2600 | That will save time in the scrolling computation. */ | |
44fa5b1e | 2601 | FRAME_SCROLL_BOTTOM_VPOS (f) = xp.vpos; |
a2889657 JB |
2602 | vpos = xp.vpos; |
2603 | pos = xp.bufpos; | |
1c9241f5 KH |
2604 | val.hpos = xp.hpos; |
2605 | val.tab_offset = xp.tab_offset; | |
a2889657 | 2606 | if (pos == ZV) |
010a899e KH |
2607 | { /* Display from next line */ |
2608 | vpos = height + scroll_amount; | |
2609 | val.hpos = lmargin; | |
2610 | val.tab_offset = 0; | |
2611 | } | |
a2889657 JB |
2612 | else if (xp.contin && xp.hpos != lmargin) |
2613 | { | |
2614 | val.hpos = xp.prevhpos - width + lmargin; | |
1c9241f5 KH |
2615 | val.tab_offset = xp.tab_offset + bp.prevhpos - width; |
2616 | DEC_POS (pos); | |
a2889657 JB |
2617 | } |
2618 | ||
2619 | blank_end_of_window = 1; | |
1c9241f5 KH |
2620 | /* The following code is omitted because we maintain tab offset |
2621 | in val.tab_offset. */ | |
2622 | #if 0 | |
a2889657 JB |
2623 | tab_offset = pos_tab_offset (w, pos); |
2624 | /* If we are starting display in mid-character, correct tab_offset | |
2625 | to account for passing the line that that character starts in. */ | |
2626 | if (val.hpos < lmargin) | |
2627 | tab_offset += width; | |
1c9241f5 | 2628 | #endif |
a2889657 JB |
2629 | while (vpos < height) |
2630 | { | |
1c9241f5 KH |
2631 | val = *display_text_line (w, pos, top + vpos++, val.hpos, |
2632 | val.tab_offset, val.ovstring_chars_done); | |
2633 | /* The following code is omitted because we maintain tab | |
2634 | offset in val.tab_offset. */ | |
2635 | #if 0 | |
a2889657 JB |
2636 | tab_offset += width; |
2637 | if (val.vpos) tab_offset = 0; | |
1c9241f5 | 2638 | #endif /* 0 */ |
a2889657 JB |
2639 | pos = val.bufpos; |
2640 | } | |
2641 | ||
2642 | /* Here is a case where display_text_line sets cursor_vpos wrong. | |
2643 | Make it be fixed up, below. */ | |
2644 | if (xp.bufpos == ZV | |
ae3b1442 | 2645 | && xp.bufpos == PT) |
a2889657 JB |
2646 | cursor_vpos = -1; |
2647 | } | |
2648 | ||
44fa5b1e | 2649 | /* If bottom just moved off end of frame, change mode line percentage. */ |
a2889657 JB |
2650 | if (XFASTINT (w->window_end_pos) == 0 |
2651 | && Z != val.bufpos) | |
2652 | w->update_mode_line = Qt; | |
2653 | ||
2654 | /* Attempt to adjust end-of-text positions to new bottom line */ | |
2655 | if (scroll_amount) | |
2656 | { | |
2657 | delta = height - xp.vpos; | |
2658 | if (delta < 0 | |
2659 | || (delta > 0 && xp.bufpos <= ZV) | |
2660 | || (delta == 0 && xp.hpos)) | |
2661 | { | |
210e752f | 2662 | val = *vmotion (Z - XFASTINT (w->window_end_pos), delta, w); |
c2213350 | 2663 | XSETFASTINT (w->window_end_pos, Z - val.bufpos); |
e8e536a9 KH |
2664 | XSETFASTINT (w->window_end_vpos, |
2665 | XFASTINT (w->window_end_vpos) + val.vpos); | |
a2889657 JB |
2666 | } |
2667 | } | |
2668 | ||
2669 | w->window_end_valid = Qnil; | |
2670 | ||
2671 | /* If point was not in a line that was displayed, find it */ | |
2672 | if (cursor_vpos < 0) | |
2673 | { | |
4d641a15 | 2674 | findpoint: |
1c9241f5 KH |
2675 | val = *compute_motion (start, 0, lmargin, 0, PT, |
2676 | /* Don't care for VPOS... */ | |
2677 | 1 << (BITS_PER_SHORT - 1), | |
2678 | /* ... nor HPOS. */ | |
2679 | 1 << (BITS_PER_SHORT - 1), | |
e37f06d7 | 2680 | width, hscroll, pos_tab_offset (w, start), w); |
44fa5b1e | 2681 | /* Admit failure if point is off frame now */ |
a2889657 JB |
2682 | if (val.vpos >= height) |
2683 | { | |
2684 | for (vpos = 0; vpos < height; vpos++) | |
44fa5b1e | 2685 | cancel_line (vpos + top, f); |
a2889657 JB |
2686 | return 0; |
2687 | } | |
2688 | cursor_vpos = val.vpos + top; | |
73f194f1 | 2689 | cursor_hpos = WINDOW_LEFT_MARGIN (w) + minmax (0, val.hpos, width); |
a2889657 JB |
2690 | } |
2691 | ||
210e752f | 2692 | FRAME_CURSOR_X (f) = cursor_hpos; |
44fa5b1e | 2693 | FRAME_CURSOR_Y (f) = cursor_vpos; |
a2889657 JB |
2694 | |
2695 | if (debug_end_pos) | |
2696 | { | |
ca26e1c8 | 2697 | val = *compute_motion (start, 0, lmargin, 0, ZV, |
68be917d | 2698 | height, - (1 << (BITS_PER_SHORT - 1)), |
e37f06d7 | 2699 | width, hscroll, pos_tab_offset (w, start), w); |
a2889657 JB |
2700 | if (val.vpos != XFASTINT (w->window_end_vpos)) |
2701 | abort (); | |
2702 | if (XFASTINT (w->window_end_pos) | |
2703 | != Z - val.bufpos) | |
2704 | abort (); | |
2705 | } | |
2706 | ||
2707 | return 1; | |
2708 | } | |
2709 | \f | |
278feba9 | 2710 | /* Copy LEN glyphs starting address FROM to the rope TO. |
f7430cb6 | 2711 | But don't actually copy the parts that would come in before S. |
278feba9 RS |
2712 | Value is TO, advanced past the copied data. |
2713 | F is the frame we are displaying in. */ | |
a2889657 | 2714 | |
278feba9 RS |
2715 | static GLYPH * |
2716 | copy_part_of_rope (f, to, s, from, len, face) | |
2717 | FRAME_PTR f; | |
2718 | register GLYPH *to; /* Copy to here. */ | |
a2889657 | 2719 | register GLYPH *s; /* Starting point. */ |
278feba9 RS |
2720 | Lisp_Object *from; /* Data to copy. */ |
2721 | int len; | |
1c2250c2 | 2722 | int face; /* Face to apply to glyphs which don't specify one. */ |
a2889657 | 2723 | { |
278feba9 RS |
2724 | int n = len; |
2725 | register Lisp_Object *fp = from; | |
2726 | /* These cache the results of the last call to compute_glyph_face. */ | |
2727 | int last_code = -1; | |
2728 | int last_merged = 0; | |
c581d710 | 2729 | |
87485d6f | 2730 | #ifdef HAVE_FACES |
4cdc65eb KH |
2731 | if (! FRAME_TERMCAP_P (f)) |
2732 | while (n--) | |
2733 | { | |
e57bca5d | 2734 | GLYPH glyph = (INTEGERP (*fp) ? XFASTINT (*fp) : 0); |
4cdc65eb | 2735 | int facecode; |
e57bca5d KH |
2736 | unsigned int c = FAST_GLYPH_CHAR (glyph); |
2737 | ||
2738 | if (c > MAX_CHAR) | |
2739 | /* For an invalid character code, use space. */ | |
2740 | c = ' '; | |
4cdc65eb KH |
2741 | |
2742 | if (FAST_GLYPH_FACE (glyph) == 0) | |
2743 | /* If GLYPH has no face code, use FACE. */ | |
2744 | facecode = face; | |
2745 | else if (FAST_GLYPH_FACE (glyph) == last_code) | |
2746 | /* If it's same as previous glyph, use same result. */ | |
2747 | facecode = last_merged; | |
2748 | else | |
2749 | { | |
2750 | /* Merge this glyph's face and remember the result. */ | |
2751 | last_code = FAST_GLYPH_FACE (glyph); | |
2752 | last_merged = facecode = compute_glyph_face (f, last_code, face); | |
2753 | } | |
b2a76982 | 2754 | |
4cdc65eb | 2755 | if (to >= s) |
e57bca5d | 2756 | *to = FAST_MAKE_GLYPH (c, facecode); |
4cdc65eb KH |
2757 | ++to; |
2758 | ++fp; | |
2759 | } | |
2760 | else | |
2761 | #endif | |
2762 | while (n--) | |
2763 | { | |
dedd1182 | 2764 | if (to >= s) *to = (INTEGERP (*fp) ? XFASTINT (*fp) : 0); |
4cdc65eb KH |
2765 | ++to; |
2766 | ++fp; | |
2767 | } | |
278feba9 | 2768 | return to; |
c581d710 RS |
2769 | } |
2770 | ||
278feba9 RS |
2771 | /* Correct a glyph by replacing its specified user-level face code |
2772 | with a displayable computed face code. */ | |
c581d710 | 2773 | |
278feba9 | 2774 | static GLYPH |
659a218f | 2775 | fix_glyph (f, glyph, cface) |
278feba9 RS |
2776 | FRAME_PTR f; |
2777 | GLYPH glyph; | |
659a218f | 2778 | int cface; |
c581d710 | 2779 | { |
87485d6f | 2780 | #ifdef HAVE_FACES |
659a218f KH |
2781 | if (! FRAME_TERMCAP_P (f)) |
2782 | { | |
2783 | if (FAST_GLYPH_FACE (glyph) != 0) | |
2784 | cface = compute_glyph_face (f, FAST_GLYPH_FACE (glyph), cface); | |
2785 | glyph = FAST_MAKE_GLYPH (FAST_GLYPH_CHAR (glyph), cface); | |
2786 | } | |
4cdc65eb KH |
2787 | #endif |
2788 | return glyph; | |
a2889657 JB |
2789 | } |
2790 | \f | |
f4faa47c JB |
2791 | /* Display one line of window W, starting at position START in W's buffer. |
2792 | ||
2793 | Display starting at horizontal position HPOS, expressed relative to | |
2794 | W's left edge. In situations where the text at START shouldn't | |
2795 | start at the left margin (i.e. when the window is hscrolled, or | |
2796 | we're continuing a line which left off in the midst of a | |
2797 | multi-column character), HPOS should be negative; we throw away | |
2798 | characters up 'til hpos = 0. So, HPOS must take hscrolling into | |
2799 | account. | |
a2889657 JB |
2800 | |
2801 | TABOFFSET is an offset for ostensible hpos, used in tab stop calculations. | |
2802 | ||
0f9c0ff0 RS |
2803 | OVSTR_DONE is the number of chars of overlay before/after strings |
2804 | at this position which have already been processed. | |
2805 | ||
f4faa47c JB |
2806 | Display on position VPOS on the frame. It is origin 0, relative to |
2807 | the top of the frame, not W. | |
a2889657 JB |
2808 | |
2809 | Returns a STRUCT POSITION giving character to start next line with | |
2810 | and where to display it, including a zero or negative hpos. | |
2811 | The vpos field is not really a vpos; it is 1 unless the line is continued */ | |
2812 | ||
2813 | struct position val_display_text_line; | |
2814 | ||
2815 | static struct position * | |
0f9c0ff0 | 2816 | display_text_line (w, start, vpos, hpos, taboffset, ovstr_done) |
a2889657 JB |
2817 | struct window *w; |
2818 | int start; | |
2819 | int vpos; | |
2820 | int hpos; | |
2821 | int taboffset; | |
0f9c0ff0 | 2822 | int ovstr_done; |
a2889657 JB |
2823 | { |
2824 | register int pos = start; | |
2825 | register int c; | |
2826 | register GLYPH *p1; | |
a2889657 JB |
2827 | register int pause; |
2828 | register unsigned char *p; | |
2829 | GLYPH *endp; | |
d2f84654 | 2830 | register GLYPH *leftmargin; |
ca26e1c8 | 2831 | register GLYPH *p1prev; |
efc63ef0 | 2832 | register GLYPH *p1start; |
ca26e1c8 | 2833 | int prevpos; |
efc63ef0 | 2834 | int *charstart; |
44fa5b1e | 2835 | FRAME_PTR f = XFRAME (w->frame); |
a2889657 | 2836 | int tab_width = XINT (current_buffer->tab_width); |
265a9e55 | 2837 | int ctl_arrow = !NILP (current_buffer->ctl_arrow); |
b1d1124b | 2838 | int width = window_internal_width (w) - 1; |
a2889657 JB |
2839 | struct position val; |
2840 | int lastpos; | |
2841 | int invis; | |
642eefc6 RS |
2842 | int last_invis_skip = 0; |
2843 | Lisp_Object last_invis_prop; | |
a2889657 | 2844 | int hscroll = XINT (w->hscroll); |
d2f84654 RS |
2845 | int truncate = (hscroll |
2846 | || (truncate_partial_width_windows | |
73f194f1 | 2847 | && !WINDOW_FULL_WIDTH_P (w)) |
d2f84654 | 2848 | || !NILP (current_buffer->truncate_lines)); |
bd66d1ba RS |
2849 | |
2850 | /* 1 if we should highlight the region. */ | |
2851 | int highlight_region | |
2bf32c5d | 2852 | = (!NILP (Vtransient_mark_mode) && !NILP (current_buffer->mark_active) |
293a54ce RS |
2853 | && (XWINDOW (current_buffer->last_selected_window) == w |
2854 | || highlight_nonselected_windows)); | |
bd66d1ba RS |
2855 | int region_beg, region_end; |
2856 | ||
e24c997d KH |
2857 | int selective = (INTEGERP (current_buffer->selective_display) |
2858 | ? XINT (current_buffer->selective_display) | |
2859 | : !NILP (current_buffer->selective_display) ? -1 : 0); | |
44fa5b1e | 2860 | register struct frame_glyphs *desired_glyphs = FRAME_DESIRED_GLYPHS (f); |
f908610f | 2861 | register struct Lisp_Char_Table *dp = window_display_table (w); |
68a37fa8 RS |
2862 | |
2863 | Lisp_Object default_invis_vector[3]; | |
642eefc6 RS |
2864 | /* Number of characters of ellipsis to display after an invisible line |
2865 | if it calls for an ellipsis. | |
2866 | Note that this value can be nonzero regardless of whether | |
2867 | selective display is enabled--you must check that separately. */ | |
a2889657 | 2868 | int selective_rlen |
642eefc6 | 2869 | = (dp && VECTORP (DISP_INVIS_VECTOR (dp)) |
68a37fa8 | 2870 | ? XVECTOR (DISP_INVIS_VECTOR (dp))->size |
642eefc6 | 2871 | : !NILP (current_buffer->selective_display_ellipses) ? 3 : 0); |
68a37fa8 RS |
2872 | /* This is the sequence of Lisp objects to display |
2873 | when there are invisible lines. */ | |
2874 | Lisp_Object *invis_vector_contents | |
e24c997d | 2875 | = (dp && VECTORP (DISP_INVIS_VECTOR (dp)) |
68a37fa8 RS |
2876 | ? XVECTOR (DISP_INVIS_VECTOR (dp))->contents |
2877 | : default_invis_vector); | |
2878 | ||
e24c997d | 2879 | GLYPH truncator = (dp == 0 || !INTEGERP (DISP_TRUNC_GLYPH (dp)) |
e57bca5d | 2880 | || !GLYPH_CHAR_VALID_P (XINT (DISP_TRUNC_GLYPH (dp))) |
278feba9 | 2881 | ? '$' : XINT (DISP_TRUNC_GLYPH (dp))); |
e24c997d | 2882 | GLYPH continuer = (dp == 0 || !INTEGERP (DISP_CONTINUE_GLYPH (dp)) |
e57bca5d | 2883 | || !GLYPH_CHAR_VALID_P (XINT (DISP_CONTINUE_GLYPH (dp))) |
278feba9 | 2884 | ? '\\' : XINT (DISP_CONTINUE_GLYPH (dp))); |
a2889657 | 2885 | |
1c9241f5 KH |
2886 | /* If 1, we must handle multibyte characters. */ |
2887 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); | |
2888 | /* Length of multibyte form of each character. */ | |
2889 | int len; | |
2890 | /* Glyphs generated should be set this bit mask if text must be | |
2891 | displayed from right to left. */ | |
2892 | GLYPH rev_dir_bit = (NILP (current_buffer->direction_reversed) | |
2893 | ? 0 : GLYPH_MASK_REV_DIR); | |
2894 | ||
31b24551 JB |
2895 | /* The next buffer location at which the face should change, due |
2896 | to overlays or text property changes. */ | |
2897 | int next_face_change; | |
2898 | ||
ca26e1c8 KH |
2899 | /* The next location where the `invisible' property changes, or an |
2900 | overlay starts or ends. */ | |
2901 | int next_boundary; | |
2902 | ||
31b24551 | 2903 | /* The face we're currently using. */ |
1c2250c2 | 2904 | int current_face = 0; |
efc63ef0 | 2905 | int i; |
31b24551 | 2906 | |
c2213350 | 2907 | XSETFASTINT (default_invis_vector[2], '.'); |
68a37fa8 RS |
2908 | default_invis_vector[0] = default_invis_vector[1] = default_invis_vector[2]; |
2909 | ||
73f194f1 RS |
2910 | hpos += WINDOW_LEFT_MARGIN (w); |
2911 | get_display_line (f, vpos, WINDOW_LEFT_MARGIN (w)); | |
54ff581a | 2912 | if (tab_width <= 0 || tab_width > 1000) tab_width = 8; |
a2889657 | 2913 | |
bd66d1ba | 2914 | /* Show where to highlight the region. */ |
1613b757 | 2915 | if (highlight_region && XMARKER (current_buffer->mark)->buffer != 0 |
fba9ce76 RS |
2916 | /* Maybe highlight only in selected window. */ |
2917 | && (highlight_nonselected_windows | |
6f139a45 | 2918 | || w == XWINDOW (selected_window))) |
bd66d1ba RS |
2919 | { |
2920 | region_beg = marker_position (current_buffer->mark); | |
2921 | if (PT < region_beg) | |
2922 | { | |
2923 | region_end = region_beg; | |
2924 | region_beg = PT; | |
2925 | } | |
2926 | else | |
2927 | region_end = PT; | |
2928 | w->region_showing = Qt; | |
2929 | } | |
2930 | else | |
3ee4159a RS |
2931 | { |
2932 | region_beg = region_end = -1; | |
2933 | w->region_showing = Qnil; | |
2934 | } | |
bd66d1ba | 2935 | |
f4faa47c | 2936 | if (MINI_WINDOW_P (w) |
ca26e1c8 | 2937 | && start == BEG |
a2889657 JB |
2938 | && vpos == XFASTINT (w->top)) |
2939 | { | |
8c5b6a0a | 2940 | if (! NILP (minibuf_prompt)) |
f7b4b63a | 2941 | { |
12a274bf RS |
2942 | int old_width = minibuf_prompt_width; |
2943 | ||
f7b4b63a | 2944 | minibuf_prompt_width |
8c5b6a0a KH |
2945 | = (display_string (w, vpos, XSTRING (minibuf_prompt)->data, |
2946 | XSTRING (minibuf_prompt)->size, hpos, | |
ce006f69 RS |
2947 | /* Display a space if we truncate. */ |
2948 | ' ', | |
2949 | 1, -1, | |
2950 | /* Truncate the prompt a little before the | |
2951 | margin, so user input can at least start | |
2952 | on the first line. */ | |
8bb6ca14 KH |
2953 | (XFASTINT (w->width) > 10 |
2954 | ? XFASTINT (w->width) - 4 : -1)) | |
f7b4b63a KH |
2955 | - hpos); |
2956 | hpos += minibuf_prompt_width; | |
12a274bf | 2957 | taboffset -= minibuf_prompt_width - old_width; |
f7b4b63a KH |
2958 | } |
2959 | else | |
2960 | minibuf_prompt_width = 0; | |
a2889657 JB |
2961 | } |
2962 | ||
f4faa47c JB |
2963 | /* If we're hscrolled at all, use compute_motion to skip over any |
2964 | text off the left edge of the window. compute_motion may know | |
2965 | tricks to do this faster than we can. */ | |
2966 | if (hpos < 0) | |
2967 | { | |
2968 | struct position *left_edge | |
ca26e1c8 KH |
2969 | = compute_motion (pos, vpos, hpos, 0, |
2970 | ZV, vpos, 0, | |
f4faa47c JB |
2971 | width, hscroll, taboffset, w); |
2972 | ||
2973 | /* Retrieve the buffer position and column provided by | |
2974 | compute_motion. We can't assume that the column will be | |
2975 | zero, because you may have multi-column characters crossing | |
2976 | the left margin. | |
2977 | ||
2978 | compute_motion may have moved us past the screen position we | |
2979 | requested, if we hit a multi-column character, or the end of | |
2980 | the line. If so, back up. */ | |
2981 | if (left_edge->vpos > vpos | |
2982 | || left_edge->hpos > 0) | |
2983 | { | |
1c9241f5 | 2984 | pos = left_edge->bufpos; |
010a899e KH |
2985 | /* Since this should not be a valid multibyte character, we |
2986 | can decrease POS by 1. */ | |
2987 | pos--; | |
f4faa47c JB |
2988 | hpos = left_edge->prevhpos; |
2989 | } | |
2990 | else | |
2991 | { | |
2992 | pos = left_edge->bufpos; | |
2993 | hpos = left_edge->hpos; | |
2994 | } | |
2995 | } | |
2996 | ||
2997 | desired_glyphs->bufp[vpos] = start; | |
a2889657 | 2998 | p1 = desired_glyphs->glyphs[vpos] + hpos; |
efc63ef0 RS |
2999 | p1start = p1; |
3000 | charstart = desired_glyphs->charstarts[vpos] + hpos; | |
3001 | /* In case we don't ever write anything into it... */ | |
73f194f1 RS |
3002 | desired_glyphs->charstarts[vpos][WINDOW_LEFT_MARGIN (w)] = -1; |
3003 | leftmargin = desired_glyphs->glyphs[vpos] + WINDOW_LEFT_MARGIN (w); | |
d2f84654 | 3004 | endp = leftmargin + width; |
a2889657 | 3005 | |
1c2250c2 JB |
3006 | /* Arrange the overlays nicely for our purposes. Usually, we call |
3007 | display_text_line on only one line at a time, in which case this | |
3008 | can't really hurt too much, or we call it on lines which appear | |
3009 | one after another in the buffer, in which case all calls to | |
3010 | recenter_overlay_lists but the first will be pretty cheap. */ | |
3011 | recenter_overlay_lists (current_buffer, pos); | |
3012 | ||
a2889657 JB |
3013 | /* Loop generating characters. |
3014 | Stop at end of buffer, before newline, | |
31b24551 JB |
3015 | if reach or pass continuation column, |
3016 | or at face change. */ | |
a2889657 | 3017 | pause = pos; |
31b24551 | 3018 | next_face_change = pos; |
ca26e1c8 KH |
3019 | next_boundary = pos; |
3020 | p1prev = p1; | |
3021 | prevpos = pos; | |
1fca3fae RS |
3022 | |
3023 | /* If the window is hscrolled and point is in the invisible part of the | |
3024 | current line beyond the left margin we can record the cursor location | |
3025 | right away. */ | |
3026 | if (hscroll && start <= PT && PT < pos && cursor_vpos < 0) | |
3027 | { | |
3028 | cursor_vpos = vpos; | |
3029 | cursor_hpos = p1 - leftmargin; | |
3030 | } | |
3031 | ||
2384c010 | 3032 | while (p1 < endp) |
a2889657 | 3033 | { |
31b24551 | 3034 | if (pos >= pause) |
a2889657 | 3035 | { |
67481ae5 RS |
3036 | int e_t_h; |
3037 | ||
ca26e1c8 | 3038 | while (pos == next_boundary) |
a2889657 | 3039 | { |
ca26e1c8 KH |
3040 | Lisp_Object position, limit, prop, ww; |
3041 | ||
3042 | /* Display the overlay strings here, unless we're at ZV | |
3043 | and have already displayed the appropriate strings | |
3044 | on an earlier line. */ | |
3045 | if (pos < ZV || !zv_strings_seen++) | |
3046 | { | |
3047 | int ovlen; | |
b4222ffa | 3048 | unsigned char *ovstr; |
ca26e1c8 | 3049 | ovlen = overlay_strings (pos, w, &ovstr); |
0f9c0ff0 RS |
3050 | |
3051 | if (ovlen > 0) | |
ca26e1c8 | 3052 | { |
0f9c0ff0 RS |
3053 | /* Skip the ones we did in a previous line. */ |
3054 | ovstr += ovstr_done; | |
3055 | ovlen -= ovstr_done; | |
3056 | ||
1c9241f5 | 3057 | while (ovlen > 0) |
0f9c0ff0 | 3058 | { |
1c9241f5 KH |
3059 | int charset, cols; |
3060 | GLYPH g; | |
3061 | ||
3062 | if (multibyte) | |
3063 | { | |
3064 | c = STRING_CHAR_AND_LENGTH (ovstr, ovlen, len); | |
3065 | ovstr += len, ovlen -= len, ovstr_done += len; | |
3066 | charset = CHAR_CHARSET (c); | |
3067 | cols = (charset == CHARSET_COMPOSITION | |
3068 | ? cmpchar_table[COMPOSITE_CHAR_ID (c)]->width | |
3069 | : CHARSET_WIDTH (charset)); | |
3070 | } | |
3071 | else | |
3072 | { | |
3073 | c = *ovstr++, ovlen--, ovstr_done++; | |
3074 | cols = 1; | |
3075 | } | |
3076 | g = MAKE_GLYPH (f, c, current_face) | rev_dir_bit; | |
3077 | while (cols-- > 0) | |
3078 | { | |
3079 | if (p1 >= leftmargin && p1 < endp) | |
3080 | *p1 = g, g |= GLYPH_MASK_PADDING; | |
3081 | p1++; | |
3082 | } | |
0f9c0ff0 RS |
3083 | } |
3084 | /* If we did all the overlay strings | |
3085 | and we have room for text, clear ovstr_done | |
3086 | just for neatness' sake. */ | |
3087 | if (ovlen == 0 && p1 < endp) | |
3088 | ovstr_done = 0; | |
ca26e1c8 KH |
3089 | } |
3090 | } | |
3091 | ||
3092 | /* Did we reach point? Record the cursor location. */ | |
3093 | if (pos == PT && cursor_vpos < 0) | |
3094 | { | |
3095 | cursor_vpos = vpos; | |
3096 | cursor_hpos = p1 - leftmargin; | |
3097 | } | |
3098 | ||
3099 | if (pos >= ZV) | |
3100 | break; | |
a2889657 | 3101 | |
c2213350 | 3102 | XSETFASTINT (position, pos); |
ca26e1c8 KH |
3103 | limit = Fnext_overlay_change (position); |
3104 | #ifdef USE_TEXT_PROPERTIES | |
dfabd9a0 RS |
3105 | /* This is just an estimate to give reasonable |
3106 | performance; nothing should go wrong if it is too small. */ | |
fe3d6921 | 3107 | if (XFASTINT (limit) > pos + 50) |
1c9241f5 KH |
3108 | { |
3109 | int limitpos = pos + 50; | |
3110 | if (limitpos < Z) | |
3111 | INC_POS (limitpos); /* Adjust to character boundary. */ | |
3112 | XSETFASTINT (limit, limitpos); | |
3113 | } | |
ca26e1c8 KH |
3114 | limit = Fnext_single_property_change (position, Qinvisible, |
3115 | Fcurrent_buffer (), limit); | |
3116 | #endif | |
3117 | next_boundary = XFASTINT (limit); | |
3118 | /* if the `invisible' property is set, we can skip to | |
3119 | the next property change. */ | |
3120 | XSETWINDOW (ww, w); | |
3121 | prop = Fget_char_property (position, Qinvisible, ww); | |
642eefc6 | 3122 | if (TEXT_PROP_MEANS_INVISIBLE (prop)) |
dfabd9a0 | 3123 | { |
ca26e1c8 | 3124 | if (pos < PT && next_boundary >= PT) |
dfabd9a0 RS |
3125 | { |
3126 | cursor_vpos = vpos; | |
d2f84654 | 3127 | cursor_hpos = p1 - leftmargin; |
dfabd9a0 | 3128 | } |
ca26e1c8 | 3129 | pos = next_boundary; |
642eefc6 RS |
3130 | last_invis_skip = pos; |
3131 | last_invis_prop = prop; | |
dfabd9a0 | 3132 | } |
b0a0fbda | 3133 | } |
ca26e1c8 KH |
3134 | |
3135 | /* Did we reach point? Record the cursor location. */ | |
3136 | if (pos == PT && cursor_vpos < 0) | |
3137 | { | |
3138 | cursor_vpos = vpos; | |
3139 | cursor_hpos = p1 - leftmargin; | |
3140 | } | |
3141 | ||
3142 | /* Did we hit the end of the visible region of the buffer? | |
3143 | Stop here. */ | |
3144 | if (pos >= ZV) | |
eff87c2c RS |
3145 | { |
3146 | /* Update charstarts for the end of this line. */ | |
3147 | /* Do nothing if off the left edge or at the right edge. */ | |
3148 | if (p1 >= leftmargin && p1 + 1 != endp) | |
3149 | { | |
3150 | int *p2x = &charstart[(p1 < leftmargin | |
3151 | ? leftmargin : p1) | |
3152 | - p1start]; | |
3153 | *p2x++ = pos; | |
3154 | } | |
3155 | break; | |
3156 | } | |
b0a0fbda | 3157 | |
67481ae5 RS |
3158 | /* Figure out where (if at all) the |
3159 | redisplay_end_trigger-hook should run. */ | |
f6fd109b RS |
3160 | if (MARKERP (w->redisplay_end_trigger) |
3161 | && XMARKER (w->redisplay_end_trigger)->buffer != 0) | |
d3413a53 RS |
3162 | e_t_h = marker_position (w->redisplay_end_trigger); |
3163 | else if (INTEGERP (w->redisplay_end_trigger)) | |
3164 | e_t_h = XINT (w->redisplay_end_trigger); | |
67481ae5 RS |
3165 | else |
3166 | e_t_h = ZV; | |
3167 | ||
3168 | /* If we've gone past the place to run a hook, | |
3169 | run the hook. */ | |
3170 | if (pos >= e_t_h && e_t_h != ZV) | |
3171 | { | |
e0bfbde6 RS |
3172 | Lisp_Object args[3]; |
3173 | ||
3174 | args[0] = Qredisplay_end_trigger_functions; | |
3175 | XSETWINDOW (args[1], w); | |
3176 | XSETINT (args[2], e_t_h); | |
e0bfbde6 | 3177 | |
9c49d3d7 KH |
3178 | /* Since we are *trying* to run these functions, |
3179 | don't try to run them again, even if they get an error. */ | |
d3413a53 | 3180 | w->redisplay_end_trigger = Qnil; |
9c49d3d7 KH |
3181 | Frun_hook_with_args (3, args); |
3182 | ||
67481ae5 | 3183 | e_t_h = ZV; |
f6fd109b RS |
3184 | /* Notice if it changed the face of this character. */ |
3185 | next_face_change = pos; | |
67481ae5 RS |
3186 | } |
3187 | ||
f6fd109b RS |
3188 | #ifdef HAVE_FACES |
3189 | /* Did we hit a face change? Figure out what face we should | |
3190 | use now. We also hit this the first time through the | |
3191 | loop, to see what face we should start with. */ | |
ab6ce60e RS |
3192 | if (pos >= next_face_change |
3193 | && (FRAME_WINDOW_P (f) || FRAME_MSDOS_P (f))) | |
1c9241f5 KH |
3194 | { |
3195 | int limit = pos + 50; | |
3196 | ||
3197 | if (limit < Z && !CHAR_HEAD_P (POS_ADDR (limit))) | |
3198 | INC_POS (limit); /* Adjust to character boundary. */ | |
3199 | current_face = compute_char_face (f, w, pos, | |
3200 | region_beg, region_end, | |
3201 | &next_face_change, limit, 0); | |
3202 | } | |
f6fd109b RS |
3203 | #endif |
3204 | ||
67481ae5 RS |
3205 | /* Compute the next place we need to stop |
3206 | and do something special; set PAUSE. */ | |
3207 | ||
ca26e1c8 | 3208 | pause = ZV; |
1c2250c2 | 3209 | |
ca26e1c8 KH |
3210 | if (pos < next_boundary && next_boundary < pause) |
3211 | pause = next_boundary; | |
1c2250c2 JB |
3212 | if (pos < next_face_change && next_face_change < pause) |
3213 | pause = next_face_change; | |
3214 | ||
67481ae5 RS |
3215 | if (e_t_h < pause) |
3216 | pause = e_t_h; | |
3217 | ||
31b24551 JB |
3218 | /* Wouldn't you hate to read the next line to someone over |
3219 | the phone? */ | |
ae3b1442 KH |
3220 | if (pos < PT && PT < pause) |
3221 | pause = PT; | |
a2889657 JB |
3222 | if (pos < GPT && GPT < pause) |
3223 | pause = GPT; | |
3224 | ||
1c9241f5 | 3225 | p = POS_ADDR (pos); |
a2889657 | 3226 | } |
ca26e1c8 | 3227 | |
ca26e1c8 KH |
3228 | if (p1 >= endp) |
3229 | break; | |
3230 | ||
3231 | p1prev = p1; | |
3232 | ||
1c9241f5 KH |
3233 | if (multibyte) |
3234 | /* PAUSE is surely at character boundary. */ | |
3235 | c = STRING_CHAR_AND_LENGTH (p, pause - pos, len), p += len; | |
3236 | else | |
3237 | c = *p++, len = 1; | |
376b0e59 RS |
3238 | /* Let a display table override all standard display methods. */ |
3239 | if (dp != 0 && VECTORP (DISP_CHAR_VECTOR (dp, c))) | |
3240 | { | |
3241 | p1 = copy_part_of_rope (f, p1, leftmargin, | |
3242 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->contents, | |
3243 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->size, | |
1c9241f5 | 3244 | current_face, rev_dir_bit); |
376b0e59 RS |
3245 | } |
3246 | else if (c >= 040 && c < 0177) | |
a2889657 | 3247 | { |
d2f84654 | 3248 | if (p1 >= leftmargin) |
1c9241f5 | 3249 | *p1 = MAKE_GLYPH (f, c, current_face) | rev_dir_bit; |
a2889657 JB |
3250 | p1++; |
3251 | } | |
3252 | else if (c == '\n') | |
3253 | { | |
1842fc1a RS |
3254 | #if 0 |
3255 | /* Same as p1prev, but after the invis_vector_contents text | |
3256 | (if we have that on this line). */ | |
3257 | GLYPH *p1prev_modified; | |
3258 | #endif | |
3259 | ||
a2889657 | 3260 | invis = 0; |
642eefc6 RS |
3261 | if (last_invis_skip == pos |
3262 | && TEXT_PROP_MEANS_INVISIBLE_WITH_ELLIPSIS (last_invis_prop)) | |
3263 | invis = 1; | |
ca26e1c8 | 3264 | while (pos + 1 < ZV |
a2889657 | 3265 | && selective > 0 |
9f412332 | 3266 | && indented_beyond_p (pos + 1, selective)) |
a2889657 JB |
3267 | { |
3268 | invis = 1; | |
3269 | pos = find_next_newline (pos + 1, 1); | |
1c9241f5 | 3270 | if (FETCH_BYTE (pos - 1) == '\n') |
a2889657 JB |
3271 | pos--; |
3272 | } | |
d2f84654 | 3273 | if (invis && selective_rlen > 0 && p1 >= leftmargin) |
a2889657 | 3274 | { |
1842fc1a RS |
3275 | #if 0 |
3276 | GLYPH *cs, *csend; | |
3277 | ||
3278 | cs = charstart + (p1 - p1start); | |
3279 | #endif | |
3280 | ||
a2889657 | 3281 | p1 += selective_rlen; |
d2f84654 | 3282 | if (p1 - leftmargin > width) |
a2889657 | 3283 | p1 = endp; |
1842fc1a RS |
3284 | |
3285 | #if 0 /* This needs more work; charstarts needs to record | |
3286 | both whether a position ho;ds an ellipsis character | |
3287 | and what buffer position it corresponds to. */ | |
3288 | csend = charstart + (p1 - p1start); | |
3289 | while (cs != csend) | |
3290 | *cs++ = -2; | |
3291 | /* The idea is to use p1prev_modified instead of p1prev | |
3292 | in the loop below over p2x. */ | |
3293 | p1prev_modified = p1; | |
3294 | #endif | |
3295 | ||
278feba9 | 3296 | copy_part_of_rope (f, p1prev, p1prev, invis_vector_contents, |
1c9241f5 | 3297 | (p1 - p1prev), current_face, rev_dir_bit); |
a2889657 | 3298 | } |
545e04f6 KH |
3299 | |
3300 | /* Update charstarts for the newline that ended this line. */ | |
3301 | /* Do nothing here for a char that's entirely off the left edge | |
3302 | or if it starts at the right edge. */ | |
3303 | if (p1 >= leftmargin && p1prev != endp) | |
3304 | { | |
3305 | /* Store the newline's position into charstarts | |
3306 | for the column where the newline starts. | |
3307 | Store -1 for the rest of the glyphs it occupies. */ | |
3308 | int *p2x = &charstart[(p1prev < leftmargin | |
3309 | ? leftmargin : p1prev) | |
3310 | - p1start]; | |
3311 | int *p2 = &charstart[(p1 < endp ? p1 : endp) - p1start]; | |
3312 | ||
3313 | *p2x++ = pos; | |
3314 | while (p2x < p2) | |
3315 | *p2x++ = -1; | |
3316 | } | |
1842fc1a RS |
3317 | #ifdef HAVE_FACES |
3318 | /* Draw the face of the newline character as extending all the | |
3319 | way to the end of the frame line. */ | |
3320 | if (current_face) | |
3321 | { | |
3322 | if (p1 < leftmargin) | |
3323 | p1 = leftmargin; | |
3324 | while (p1 < endp) | |
3325 | *p1++ = FAST_MAKE_GLYPH (' ', current_face) | rev_dir_bit; | |
3326 | } | |
3327 | #endif | |
545e04f6 | 3328 | |
68a37fa8 | 3329 | break; |
a2889657 JB |
3330 | } |
3331 | else if (c == '\t') | |
3332 | { | |
3333 | do | |
3334 | { | |
d2f84654 | 3335 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 | 3336 | *p1 = MAKE_GLYPH (f, ' ', current_face) | rev_dir_bit; |
a2889657 JB |
3337 | p1++; |
3338 | } | |
d2f84654 | 3339 | while ((p1 - leftmargin + taboffset + hscroll - (hscroll > 0)) |
a2889657 JB |
3340 | % tab_width); |
3341 | } | |
6e8290aa | 3342 | else if (c == Ctl ('M') && selective == -1) |
a2889657 JB |
3343 | { |
3344 | pos = find_next_newline (pos, 1); | |
1c9241f5 | 3345 | if (FETCH_BYTE (pos - 1) == '\n') |
a2889657 JB |
3346 | pos--; |
3347 | if (selective_rlen > 0) | |
3348 | { | |
3349 | p1 += selective_rlen; | |
d2f84654 | 3350 | if (p1 - leftmargin > width) |
a2889657 | 3351 | p1 = endp; |
278feba9 | 3352 | copy_part_of_rope (f, p1prev, p1prev, invis_vector_contents, |
1c9241f5 | 3353 | (p1 - p1prev), current_face, rev_dir_bit); |
a2889657 | 3354 | } |
87485d6f | 3355 | #ifdef HAVE_FACES |
3c5c35c5 JB |
3356 | /* Draw the face of the newline character as extending all the |
3357 | way to the end of the frame line. */ | |
3358 | if (current_face) | |
1105ff20 KH |
3359 | { |
3360 | if (p1 < leftmargin) | |
3361 | p1 = leftmargin; | |
3362 | while (p1 < endp) | |
1c9241f5 | 3363 | *p1++ = FAST_MAKE_GLYPH (' ', current_face) | rev_dir_bit; |
1105ff20 | 3364 | } |
3c5c35c5 | 3365 | #endif |
545e04f6 KH |
3366 | |
3367 | /* Update charstarts for the ^M that ended this line. */ | |
3368 | /* Do nothing here for a char that's entirely off the left edge | |
3369 | or if it starts at the right edge. */ | |
3370 | if (p1 >= leftmargin && p1prev != endp) | |
3371 | { | |
3372 | /* Store the newline's position into charstarts | |
3373 | for the column where the newline starts. | |
3374 | Store -1 for the rest of the glyphs it occupies. */ | |
3375 | int *p2x = &charstart[(p1prev < leftmargin | |
3376 | ? leftmargin : p1prev) | |
3377 | - p1start]; | |
3378 | int *p2 = &charstart[(p1 < endp ? p1 : endp) - p1start]; | |
3379 | ||
3380 | *p2x++ = pos; | |
3381 | while (p2x < p2) | |
3382 | *p2x++ = -1; | |
3383 | } | |
68a37fa8 | 3384 | break; |
a2889657 | 3385 | } |
a2889657 JB |
3386 | else if (c < 0200 && ctl_arrow) |
3387 | { | |
d2f84654 | 3388 | if (p1 >= leftmargin) |
e57bca5d KH |
3389 | *p1 = (fix_glyph |
3390 | (f, (dp && INTEGERP (DISP_CTRL_GLYPH (dp)) | |
3391 | && GLYPH_CHAR_VALID_P (XINT (DISP_CTRL_GLYPH (dp))) | |
3392 | ? XINT (DISP_CTRL_GLYPH (dp)) : '^'), | |
3393 | current_face) | |
1c9241f5 | 3394 | | rev_dir_bit); |
a2889657 | 3395 | p1++; |
d2f84654 | 3396 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 | 3397 | *p1 = MAKE_GLYPH (f, c ^ 0100, current_face) | rev_dir_bit; |
a2889657 JB |
3398 | p1++; |
3399 | } | |
1c9241f5 | 3400 | else if (len == 1) |
a2889657 | 3401 | { |
1c9241f5 | 3402 | /* C is not a multibyte character. */ |
d2f84654 | 3403 | if (p1 >= leftmargin) |
e57bca5d KH |
3404 | *p1 = (fix_glyph |
3405 | (f, (dp && INTEGERP (DISP_ESCAPE_GLYPH (dp)) | |
8bb6ca14 | 3406 | && GLYPH_CHAR_VALID_P (XINT (DISP_ESCAPE_GLYPH (dp))) |
e57bca5d KH |
3407 | ? XINT (DISP_ESCAPE_GLYPH (dp)) : '\\'), |
3408 | current_face) | |
1c9241f5 | 3409 | | rev_dir_bit); |
a2889657 | 3410 | p1++; |
d2f84654 | 3411 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 | 3412 | *p1 = MAKE_GLYPH (f, (c >> 6) + '0', current_face) | rev_dir_bit; |
a2889657 | 3413 | p1++; |
d2f84654 | 3414 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 KH |
3415 | *p1 = (MAKE_GLYPH (f, (7 & (c >> 3)) + '0', current_face) |
3416 | | rev_dir_bit); | |
a2889657 | 3417 | p1++; |
d2f84654 | 3418 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 | 3419 | *p1 = MAKE_GLYPH (f, (7 & c) + '0', current_face) | rev_dir_bit; |
a2889657 JB |
3420 | p1++; |
3421 | } | |
1c9241f5 KH |
3422 | else |
3423 | { | |
3424 | /* C is a multibyte character. */ | |
3425 | int charset = CHAR_CHARSET (c); | |
3426 | int columns = (charset == CHARSET_COMPOSITION | |
3427 | ? cmpchar_table[COMPOSITE_CHAR_ID (c)]->width | |
3428 | : CHARSET_WIDTH (charset)); | |
3429 | GLYPH g = MAKE_GLYPH (f, c, current_face) | rev_dir_bit; | |
3430 | ||
3431 | while (columns--) | |
3432 | { | |
3433 | if (p1 >= leftmargin && p1 < endp) | |
3434 | *p1 = g, g |= GLYPH_MASK_PADDING; | |
3435 | p1++; | |
3436 | } | |
3437 | } | |
31b24551 | 3438 | |
ca26e1c8 | 3439 | prevpos = pos; |
1c9241f5 | 3440 | pos += len; |
545e04f6 KH |
3441 | |
3442 | /* Update charstarts for the character just output. */ | |
3443 | ||
3444 | /* Do nothing here for a char that's entirely off the left edge. */ | |
3445 | if (p1 >= leftmargin) | |
3446 | { | |
3447 | /* Store the char's position into charstarts | |
3448 | for the first glyph occupied by this char. | |
3449 | Store -1 for the rest of the glyphs it occupies. */ | |
3450 | if (p1 != p1prev) | |
3451 | { | |
3452 | int *p2x = &charstart[(p1prev < leftmargin | |
3453 | ? leftmargin : p1prev) | |
3454 | - p1start]; | |
3455 | int *p2 = &charstart[(p1 < endp ? p1 : endp) - p1start]; | |
3456 | ||
3457 | if (p2x < p2) | |
3458 | *p2x++ = prevpos; | |
3459 | while (p2x < p2) | |
3460 | *p2x++ = -1; | |
3461 | } | |
3462 | } | |
a2889657 JB |
3463 | } |
3464 | ||
3465 | val.hpos = - XINT (w->hscroll); | |
3466 | if (val.hpos) | |
3467 | val.hpos++; | |
3468 | ||
3469 | val.vpos = 1; | |
3470 | ||
3471 | lastpos = pos; | |
3472 | ||
efc63ef0 RS |
3473 | /* Store 0 in this charstart line for the positions where |
3474 | there is no character. But do leave what was recorded | |
3475 | for the character that ended the line. */ | |
85bcef6c RS |
3476 | /* Add 1 in the endtest to compensate for the fact that ENDP was |
3477 | made from WIDTH, which is 1 less than the window's actual | |
3478 | internal width. */ | |
a007eef6 RS |
3479 | i = p1 - p1start + 1; |
3480 | if (p1 < leftmargin) | |
3481 | i += leftmargin - p1; | |
3482 | for (; i < endp - p1start + 1; i++) | |
efc63ef0 RS |
3483 | charstart[i] = 0; |
3484 | ||
a2889657 JB |
3485 | /* Handle continuation in middle of a character */ |
3486 | /* by backing up over it */ | |
3487 | if (p1 > endp) | |
3488 | { | |
5fcbb24d JB |
3489 | /* Don't back up if we never actually displayed any text. |
3490 | This occurs when the minibuffer prompt takes up the whole line. */ | |
3491 | if (p1prev) | |
3492 | { | |
1c9241f5 KH |
3493 | /* Start the next line with that same character whose |
3494 | character code is C and the length of multi-byte form is | |
3495 | LEN. */ | |
3496 | pos = prevpos; | |
3497 | ||
3498 | if (len == 1) | |
3499 | /* C is not a multi-byte character. We can break it and | |
3500 | start from the middle column in the next line. So, | |
3501 | adjust VAL.HPOS to skip the columns output on this | |
3502 | line. */ | |
3503 | val.hpos += p1prev - endp; | |
3504 | else | |
3505 | { | |
3506 | /* C is a multibyte character. Since we can't broke it | |
3507 | in the middle, the whole character should be driven | |
3508 | into the next line. */ | |
3509 | /* As the result, the actual columns occupied by the | |
3510 | text on this line is less than WIDTH. VAL.TAB_OFFSET | |
3511 | must be adjusted. */ | |
3512 | taboffset = taboffset + (p1prev - endp); | |
3513 | /* Let's fill unused columns with TRUNCATOR or CONTINUER. */ | |
3514 | { | |
3515 | GLYPH g = fix_glyph (f, truncate ? truncator : continuer, 0); | |
3516 | while (p1prev < endp) | |
3517 | *p1prev++ = g; | |
3518 | } | |
3519 | /* If POINT is at POS, cursor should not on this line. */ | |
3520 | lastpos = pos; | |
3521 | if (PT == pos) | |
3522 | cursor_vpos = -1; | |
3523 | } | |
5fcbb24d JB |
3524 | } |
3525 | ||
a2889657 JB |
3526 | /* Keep in this line everything up to the continuation column. */ |
3527 | p1 = endp; | |
3528 | } | |
3529 | ||
3530 | /* Finish deciding which character to start the next line on, | |
3531 | and what hpos to start it at. | |
3532 | Also set `lastpos' to the last position which counts as "on this line" | |
3533 | for cursor-positioning. */ | |
3534 | ||
3535 | if (pos < ZV) | |
3536 | { | |
1c9241f5 | 3537 | if (FETCH_BYTE (pos) == '\n') |
dd5f6267 KH |
3538 | { |
3539 | /* If stopped due to a newline, start next line after it */ | |
3540 | pos++; | |
1c9241f5 | 3541 | val.tab_offset = 0; |
dd5f6267 KH |
3542 | /* Check again for hidden lines, in case the newline occurred exactly |
3543 | at the right margin. */ | |
3544 | while (pos < ZV && selective > 0 | |
3545 | && indented_beyond_p (pos, selective)) | |
3546 | pos = find_next_newline (pos, 1); | |
3547 | } | |
a2889657 JB |
3548 | else |
3549 | /* Stopped due to right margin of window */ | |
3550 | { | |
3551 | if (truncate) | |
3552 | { | |
278feba9 | 3553 | *p1++ = fix_glyph (f, truncator, 0); |
a2889657 JB |
3554 | /* Truncating => start next line after next newline, |
3555 | and point is on this line if it is before the newline, | |
3556 | and skip none of first char of next line */ | |
dd5f6267 KH |
3557 | do |
3558 | pos = find_next_newline (pos, 1); | |
3559 | while (pos < ZV && selective > 0 | |
3560 | && indented_beyond_p (pos, selective)); | |
a2889657 JB |
3561 | val.hpos = XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0; |
3562 | ||
1c9241f5 KH |
3563 | lastpos = pos - (FETCH_BYTE (pos - 1) == '\n'); |
3564 | val.tab_offset = 0; | |
a2889657 JB |
3565 | } |
3566 | else | |
3567 | { | |
278feba9 | 3568 | *p1++ = fix_glyph (f, continuer, 0); |
a2889657 JB |
3569 | val.vpos = 0; |
3570 | lastpos--; | |
1c9241f5 | 3571 | val.tab_offset = taboffset + width; |
a2889657 JB |
3572 | } |
3573 | } | |
3574 | } | |
1c9241f5 KH |
3575 | else |
3576 | val.tab_offset = 0; | |
a2889657 JB |
3577 | |
3578 | /* If point is at eol or in invisible text at eol, | |
44fa5b1e | 3579 | record its frame location now. */ |
a2889657 | 3580 | |
ae3b1442 | 3581 | if (start <= PT && PT <= lastpos && cursor_vpos < 0) |
a2889657 JB |
3582 | { |
3583 | cursor_vpos = vpos; | |
d2f84654 | 3584 | cursor_hpos = p1 - leftmargin; |
a2889657 JB |
3585 | } |
3586 | ||
3587 | if (cursor_vpos == vpos) | |
3588 | { | |
3589 | if (cursor_hpos < 0) cursor_hpos = 0; | |
3590 | if (cursor_hpos > width) cursor_hpos = width; | |
73f194f1 | 3591 | cursor_hpos += WINDOW_LEFT_MARGIN (w); |
44fa5b1e | 3592 | if (w == XWINDOW (FRAME_SELECTED_WINDOW (f))) |
a2889657 | 3593 | { |
b5bbc9a5 KH |
3594 | if (!(cursor_in_echo_area && FRAME_HAS_MINIBUF_P (f) |
3595 | && EQ (FRAME_MINIBUF_WINDOW (f), minibuf_window))) | |
3596 | { | |
3597 | FRAME_CURSOR_Y (f) = cursor_vpos; | |
3598 | FRAME_CURSOR_X (f) = cursor_hpos; | |
3599 | } | |
a2889657 JB |
3600 | |
3601 | if (w == XWINDOW (selected_window)) | |
3602 | { | |
3603 | /* Line is not continued and did not start | |
3604 | in middle of character */ | |
73f194f1 | 3605 | if ((hpos - WINDOW_LEFT_MARGIN (w) |
a2889657 JB |
3606 | == (XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0)) |
3607 | && val.vpos) | |
3608 | { | |
3609 | this_line_bufpos = start; | |
3610 | this_line_buffer = current_buffer; | |
3611 | this_line_vpos = cursor_vpos; | |
89819bdd | 3612 | this_line_start_hpos = hpos - WINDOW_LEFT_MARGIN (w); |
a2889657 JB |
3613 | this_line_endpos = Z - lastpos; |
3614 | } | |
3615 | else | |
3616 | this_line_bufpos = 0; | |
3617 | } | |
3618 | } | |
3619 | } | |
3620 | ||
3621 | /* If hscroll and line not empty, insert truncation-at-left marker */ | |
3622 | if (hscroll && lastpos != start) | |
3623 | { | |
1c9241f5 KH |
3624 | GLYPH g = fix_glyph (f, truncator, 0); |
3625 | *leftmargin = g; | |
d2f84654 RS |
3626 | if (p1 <= leftmargin) |
3627 | p1 = leftmargin + 1; | |
1c9241f5 KH |
3628 | else /* MULE: it may be a wide-column character */ |
3629 | { | |
3630 | p1prev = leftmargin + 1; | |
3631 | while (p1prev < p1 && *p1prev & GLYPH_MASK_PADDING) | |
3632 | *p1prev++ = g; | |
3633 | } | |
a2889657 JB |
3634 | } |
3635 | ||
73f194f1 | 3636 | if (!WINDOW_RIGHTMOST_P (w)) |
a2889657 JB |
3637 | { |
3638 | endp++; | |
d2f84654 | 3639 | if (p1 < leftmargin) p1 = leftmargin; |
a2889657 | 3640 | while (p1 < endp) *p1++ = SPACEGLYPH; |
b1d1124b | 3641 | |
88f22aff JB |
3642 | /* Don't draw vertical bars if we're using scroll bars. They're |
3643 | covered up by the scroll bars, and it's distracting to see | |
3644 | them when the scroll bar windows are flickering around to be | |
b1d1124b | 3645 | reconfigured. */ |
73f194f1 | 3646 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT (f)) |
75d13c64 KH |
3647 | { |
3648 | int i; | |
3649 | for (i = 0; i < FRAME_SCROLL_BAR_COLS (f); i++) | |
3650 | *p1++ = SPACEGLYPH; | |
3651 | } | |
73f194f1 | 3652 | else if (!FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
75d13c64 | 3653 | *p1++ = (dp && INTEGERP (DISP_BORDER_GLYPH (dp)) |
8bb6ca14 | 3654 | ? XINT (DISP_BORDER_GLYPH (dp)) |
75d13c64 | 3655 | : '|'); |
a2889657 JB |
3656 | } |
3657 | desired_glyphs->used[vpos] = max (desired_glyphs->used[vpos], | |
3658 | p1 - desired_glyphs->glyphs[vpos]); | |
3659 | desired_glyphs->glyphs[vpos][desired_glyphs->used[vpos]] = 0; | |
3660 | ||
3661 | /* If the start of this line is the overlay arrow-position, | |
3662 | then put the arrow string into the display-line. */ | |
3663 | ||
e24c997d | 3664 | if (MARKERP (Voverlay_arrow_position) |
a2889657 JB |
3665 | && current_buffer == XMARKER (Voverlay_arrow_position)->buffer |
3666 | && start == marker_position (Voverlay_arrow_position) | |
e24c997d | 3667 | && STRINGP (Voverlay_arrow_string) |
a2889657 JB |
3668 | && ! overlay_arrow_seen) |
3669 | { | |
3670 | unsigned char *p = XSTRING (Voverlay_arrow_string)->data; | |
3671 | int i; | |
3672 | int len = XSTRING (Voverlay_arrow_string)->size; | |
142be3dd | 3673 | int arrow_end; |
a2889657 | 3674 | |
b1d1124b JB |
3675 | if (len > width) |
3676 | len = width; | |
87485d6f | 3677 | #ifdef HAVE_FACES |
c4628384 RS |
3678 | if (!NULL_INTERVAL_P (XSTRING (Voverlay_arrow_string)->intervals)) |
3679 | { | |
3680 | /* If the arrow string has text props, obey them when displaying. */ | |
3681 | for (i = 0; i < len; i++) | |
3682 | { | |
3683 | int c = p[i]; | |
3684 | Lisp_Object face, ilisp; | |
3685 | int newface; | |
3686 | ||
c2213350 | 3687 | XSETFASTINT (ilisp, i); |
c4628384 RS |
3688 | face = Fget_text_property (ilisp, Qface, Voverlay_arrow_string); |
3689 | newface = compute_glyph_face_1 (f, face, 0); | |
3690 | leftmargin[i] = FAST_MAKE_GLYPH (c, newface); | |
3691 | } | |
3692 | } | |
3693 | else | |
87485d6f | 3694 | #endif /* HAVE_FACES */ |
c4628384 RS |
3695 | { |
3696 | for (i = 0; i < len; i++) | |
3697 | leftmargin[i] = p[i]; | |
3698 | } | |
142be3dd JB |
3699 | |
3700 | /* Bug in SunOS 4.1.1 compiler requires this intermediate variable. */ | |
d2f84654 | 3701 | arrow_end = (leftmargin - desired_glyphs->glyphs[vpos]) + len; |
142be3dd JB |
3702 | if (desired_glyphs->used[vpos] < arrow_end) |
3703 | desired_glyphs->used[vpos] = arrow_end; | |
a2889657 JB |
3704 | |
3705 | overlay_arrow_seen = 1; | |
3706 | } | |
3707 | ||
3708 | val.bufpos = pos; | |
0f9c0ff0 | 3709 | val.ovstring_chars_done = ovstr_done; |
a2889657 JB |
3710 | val_display_text_line = val; |
3711 | return &val_display_text_line; | |
3712 | } | |
3713 | \f | |
7ce2c095 RS |
3714 | /* Redisplay the menu bar in the frame for window W. */ |
3715 | ||
3716 | static void | |
3717 | display_menu_bar (w) | |
3718 | struct window *w; | |
3719 | { | |
3720 | Lisp_Object items, tail; | |
3721 | register int vpos = 0; | |
3722 | register FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
3723 | int maxendcol = FRAME_WIDTH (f); | |
3724 | int hpos = 0; | |
8351baf2 | 3725 | int i; |
7ce2c095 | 3726 | |
dc937613 | 3727 | #ifdef HAVE_NTGUI |
d129c4c2 KH |
3728 | if (!NILP (Vwindow_system)) |
3729 | return; | |
dc937613 RS |
3730 | #endif |
3731 | ||
3732 | #ifdef USE_X_TOOLKIT | |
d3413a53 | 3733 | if (FRAME_X_P (f)) |
7ce2c095 | 3734 | return; |
dc937613 | 3735 | #endif /* USE_X_TOOLKIT */ |
7ce2c095 RS |
3736 | |
3737 | get_display_line (f, vpos, 0); | |
3738 | ||
8351baf2 | 3739 | items = FRAME_MENU_BAR_ITEMS (f); |
469937ac | 3740 | for (i = 0; i < XVECTOR (items)->size; i += 4) |
7ce2c095 | 3741 | { |
8351baf2 RS |
3742 | Lisp_Object pos, string; |
3743 | string = XVECTOR (items)->contents[i + 1]; | |
3744 | if (NILP (string)) | |
3745 | break; | |
2d66ad19 | 3746 | |
469937ac | 3747 | XSETFASTINT (XVECTOR (items)->contents[i + 3], hpos); |
7ce2c095 RS |
3748 | |
3749 | if (hpos < maxendcol) | |
11c52c4f | 3750 | hpos = display_string (w, vpos, |
7ce2c095 | 3751 | XSTRING (string)->data, |
90adcf20 | 3752 | XSTRING (string)->size, |
278feba9 | 3753 | hpos, 0, 0, hpos, maxendcol); |
6b1bbc46 | 3754 | /* Put a space between items. */ |
2d66ad19 RS |
3755 | if (hpos < maxendcol) |
3756 | { | |
6b1bbc46 | 3757 | int hpos1 = hpos + 1; |
278feba9 | 3758 | hpos = display_string (w, vpos, "", 0, hpos, 0, 0, |
2d66ad19 RS |
3759 | min (hpos1, maxendcol), maxendcol); |
3760 | } | |
7ce2c095 RS |
3761 | } |
3762 | ||
3763 | FRAME_DESIRED_GLYPHS (f)->bufp[vpos] = 0; | |
3764 | FRAME_DESIRED_GLYPHS (f)->highlight[vpos] = mode_line_inverse_video; | |
2d66ad19 RS |
3765 | |
3766 | /* Fill out the line with spaces. */ | |
3767 | if (maxendcol > hpos) | |
278feba9 | 3768 | hpos = display_string (w, vpos, "", 0, hpos, 0, 0, maxendcol, maxendcol); |
db6f348c JB |
3769 | |
3770 | /* Clear the rest of the lines allocated to the menu bar. */ | |
3771 | vpos++; | |
3772 | while (vpos < FRAME_MENU_BAR_LINES (f)) | |
3773 | get_display_line (f, vpos++, 0); | |
7ce2c095 RS |
3774 | } |
3775 | \f | |
a2889657 JB |
3776 | /* Display the mode line for window w */ |
3777 | ||
3778 | static void | |
3779 | display_mode_line (w) | |
3780 | struct window *w; | |
3781 | { | |
3782 | register int vpos = XFASTINT (w->height) + XFASTINT (w->top) - 1; | |
73f194f1 RS |
3783 | register int left = WINDOW_LEFT_MARGIN (w); |
3784 | register int right = WINDOW_RIGHT_MARGIN (w); | |
44fa5b1e | 3785 | register FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
a2889657 | 3786 | |
aa6d10fa | 3787 | line_number_displayed = 0; |
155ef550 | 3788 | w->column_number_displayed = Qnil; |
aa6d10fa | 3789 | |
44fa5b1e | 3790 | get_display_line (f, vpos, left); |
03b294dc RS |
3791 | |
3792 | /* Temporarily make frame F's kboard the current kboard | |
3793 | so that kboard-local variables in the mode_line_format | |
3794 | will get the right values. */ | |
3795 | push_frame_kboard (f); | |
3796 | ||
3797 | display_mode_element (w, vpos, left, 0, right, right, | |
3798 | current_buffer->mode_line_format); | |
3799 | ||
3800 | pop_frame_kboard (); | |
3801 | ||
44fa5b1e | 3802 | FRAME_DESIRED_GLYPHS (f)->bufp[vpos] = 0; |
a2889657 | 3803 | |
73f194f1 RS |
3804 | /* Put the mode line in inverse video. |
3805 | Use faces if possible, since that lets us handle | |
3806 | partial-width windows and avoid inverting the scroll bar columns. */ | |
87485d6f | 3807 | #ifdef HAVE_FACES |
73f194f1 | 3808 | if (! FRAME_TERMCAP_P (f) && mode_line_inverse_video) |
d7eb09a0 RS |
3809 | { |
3810 | /* For a partial width window, explicitly set face of each glyph. */ | |
3811 | int i; | |
1c9241f5 | 3812 | unsigned int padding; |
d7eb09a0 RS |
3813 | GLYPH *ptr = FRAME_DESIRED_GLYPHS (f)->glyphs[vpos]; |
3814 | for (i = left; i < right; ++i) | |
1c9241f5 KH |
3815 | { |
3816 | padding = ptr[i] & GLYPH_MASK_PADDING; | |
3817 | ptr[i] = FAST_MAKE_GLYPH (FAST_GLYPH_CHAR (ptr[i]), 1) | padding; | |
3818 | } | |
d7eb09a0 | 3819 | } |
010a899e | 3820 | else |
4cdc65eb | 3821 | #endif |
73f194f1 RS |
3822 | |
3823 | /* Make the mode line inverse video if the entire line | |
3824 | is made of mode lines. | |
3825 | I.e. if this window is full width, | |
3826 | or if it is the child of a full width window | |
3827 | (which implies that that window is split side-by-side | |
3828 | and the rest of this line is mode lines of the sibling windows). */ | |
010a899e KH |
3829 | if (WINDOW_FULL_WIDTH_P (w) |
3830 | || WINDOW_FULL_WIDTH_P (XWINDOW (w->parent))) | |
73f194f1 | 3831 | FRAME_DESIRED_GLYPHS (f)->highlight[vpos] = mode_line_inverse_video; |
a2889657 JB |
3832 | } |
3833 | ||
3834 | /* Contribute ELT to the mode line for window W. | |
3835 | How it translates into text depends on its data type. | |
3836 | ||
3837 | VPOS is the position of the mode line being displayed. | |
3838 | ||
44fa5b1e | 3839 | HPOS is the position (absolute on frame) where this element's text |
a2889657 JB |
3840 | should start. The output is truncated automatically at the right |
3841 | edge of window W. | |
3842 | ||
3843 | DEPTH is the depth in recursion. It is used to prevent | |
3844 | infinite recursion here. | |
3845 | ||
3846 | MINENDCOL is the hpos before which the element may not end. | |
3847 | The element is padded at the right with spaces if nec | |
3848 | to reach this column. | |
3849 | ||
3850 | MAXENDCOL is the hpos past which this element may not extend. | |
3851 | If MINENDCOL is > MAXENDCOL, MINENDCOL takes priority. | |
3852 | (This is necessary to make nested padding and truncation work.) | |
3853 | ||
3854 | Returns the hpos of the end of the text generated by ELT. | |
3855 | The next element will receive that value as its HPOS arg, | |
3856 | so as to concatenate the elements. */ | |
3857 | ||
3858 | static int | |
3859 | display_mode_element (w, vpos, hpos, depth, minendcol, maxendcol, elt) | |
3860 | struct window *w; | |
3861 | register int vpos, hpos; | |
3862 | int depth; | |
3863 | int minendcol; | |
3864 | register int maxendcol; | |
3865 | register Lisp_Object elt; | |
3866 | { | |
3867 | tail_recurse: | |
3868 | if (depth > 10) | |
3869 | goto invalid; | |
3870 | ||
3871 | depth++; | |
3872 | ||
0220c518 | 3873 | switch (SWITCH_ENUM_CAST (XTYPE (elt))) |
a2889657 JB |
3874 | { |
3875 | case Lisp_String: | |
3876 | { | |
3877 | /* A string: output it and check for %-constructs within it. */ | |
3878 | register unsigned char c; | |
3879 | register unsigned char *this = XSTRING (elt)->data; | |
3880 | ||
3881 | while (hpos < maxendcol && *this) | |
3882 | { | |
3883 | unsigned char *last = this; | |
3884 | while ((c = *this++) != '\0' && c != '%') | |
3885 | ; | |
3886 | if (this - 1 != last) | |
3887 | { | |
3888 | register int lim = --this - last + hpos; | |
d39b6696 KH |
3889 | if (frame_title_ptr) |
3890 | hpos = store_frame_title (last, hpos, min (lim, maxendcol)); | |
3891 | else | |
3892 | hpos = display_string (w, vpos, last, -1, hpos, 0, 1, | |
3893 | hpos, min (lim, maxendcol)); | |
a2889657 JB |
3894 | } |
3895 | else /* c == '%' */ | |
3896 | { | |
766525bc | 3897 | register int minendcol; |
a2889657 JB |
3898 | register int spec_width = 0; |
3899 | ||
3900 | /* We can't allow -ve args due to the "%-" construct */ | |
3901 | /* Argument specifies minwidth but not maxwidth | |
3902 | (maxwidth can be specified by | |
3903 | (<negative-number> . <stuff>) mode-line elements) */ | |
3904 | ||
3905 | while ((c = *this++) >= '0' && c <= '9') | |
3906 | { | |
3907 | spec_width = spec_width * 10 + (c - '0'); | |
3908 | } | |
3909 | ||
766525bc RS |
3910 | minendcol = hpos + spec_width; |
3911 | if (minendcol > maxendcol) | |
3912 | { | |
3913 | spec_width = maxendcol - hpos; | |
3914 | minendcol = maxendcol; | |
3915 | } | |
a2889657 JB |
3916 | |
3917 | if (c == 'M') | |
3918 | hpos = display_mode_element (w, vpos, hpos, depth, | |
3919 | spec_width, maxendcol, | |
3920 | Vglobal_mode_string); | |
3921 | else if (c != 0) | |
d39b6696 | 3922 | { |
766525bc RS |
3923 | char *spec = decode_mode_spec (w, c, spec_width, |
3924 | maxendcol - hpos); | |
d39b6696 | 3925 | if (frame_title_ptr) |
766525bc | 3926 | hpos = store_frame_title (spec, minendcol, maxendcol); |
d39b6696 KH |
3927 | else |
3928 | hpos = display_string (w, vpos, spec, -1, | |
3929 | hpos, 0, 1, | |
766525bc | 3930 | minendcol, maxendcol); |
d39b6696 | 3931 | } |
a2889657 JB |
3932 | } |
3933 | } | |
3934 | } | |
3935 | break; | |
3936 | ||
3937 | case Lisp_Symbol: | |
3938 | /* A symbol: process the value of the symbol recursively | |
3939 | as if it appeared here directly. Avoid error if symbol void. | |
3940 | Special case: if value of symbol is a string, output the string | |
3941 | literally. */ | |
3942 | { | |
3943 | register Lisp_Object tem; | |
3944 | tem = Fboundp (elt); | |
265a9e55 | 3945 | if (!NILP (tem)) |
a2889657 JB |
3946 | { |
3947 | tem = Fsymbol_value (elt); | |
3948 | /* If value is a string, output that string literally: | |
3949 | don't check for % within it. */ | |
e24c997d | 3950 | if (STRINGP (tem)) |
d39b6696 KH |
3951 | { |
3952 | if (frame_title_ptr) | |
3953 | hpos = store_frame_title (XSTRING (tem)->data, | |
3954 | minendcol, maxendcol); | |
3955 | else | |
3956 | hpos = display_string (w, vpos, XSTRING (tem)->data, | |
3957 | XSTRING (tem)->size, | |
3958 | hpos, 0, 1, minendcol, maxendcol); | |
3959 | } | |
a2889657 JB |
3960 | /* Give up right away for nil or t. */ |
3961 | else if (!EQ (tem, elt)) | |
3962 | { elt = tem; goto tail_recurse; } | |
3963 | } | |
3964 | } | |
3965 | break; | |
3966 | ||
3967 | case Lisp_Cons: | |
3968 | { | |
3969 | register Lisp_Object car, tem; | |
3970 | ||
3971 | /* A cons cell: three distinct cases. | |
3972 | If first element is a string or a cons, process all the elements | |
3973 | and effectively concatenate them. | |
3974 | If first element is a negative number, truncate displaying cdr to | |
3975 | at most that many characters. If positive, pad (with spaces) | |
3976 | to at least that many characters. | |
3977 | If first element is a symbol, process the cadr or caddr recursively | |
3978 | according to whether the symbol's value is non-nil or nil. */ | |
3979 | car = XCONS (elt)->car; | |
e24c997d | 3980 | if (SYMBOLP (car)) |
a2889657 JB |
3981 | { |
3982 | tem = Fboundp (car); | |
3983 | elt = XCONS (elt)->cdr; | |
e24c997d | 3984 | if (!CONSP (elt)) |
a2889657 JB |
3985 | goto invalid; |
3986 | /* elt is now the cdr, and we know it is a cons cell. | |
3987 | Use its car if CAR has a non-nil value. */ | |
265a9e55 | 3988 | if (!NILP (tem)) |
a2889657 JB |
3989 | { |
3990 | tem = Fsymbol_value (car); | |
265a9e55 | 3991 | if (!NILP (tem)) |
a2889657 JB |
3992 | { elt = XCONS (elt)->car; goto tail_recurse; } |
3993 | } | |
3994 | /* Symbol's value is nil (or symbol is unbound) | |
3995 | Get the cddr of the original list | |
3996 | and if possible find the caddr and use that. */ | |
3997 | elt = XCONS (elt)->cdr; | |
265a9e55 | 3998 | if (NILP (elt)) |
a2889657 | 3999 | break; |
e24c997d | 4000 | else if (!CONSP (elt)) |
a2889657 JB |
4001 | goto invalid; |
4002 | elt = XCONS (elt)->car; | |
4003 | goto tail_recurse; | |
4004 | } | |
e24c997d | 4005 | else if (INTEGERP (car)) |
a2889657 JB |
4006 | { |
4007 | register int lim = XINT (car); | |
4008 | elt = XCONS (elt)->cdr; | |
4009 | if (lim < 0) | |
4010 | /* Negative int means reduce maximum width. | |
4011 | DO NOT change MINENDCOL here! | |
4012 | (20 -10 . foo) should truncate foo to 10 col | |
4013 | and then pad to 20. */ | |
4014 | maxendcol = min (maxendcol, hpos - lim); | |
4015 | else if (lim > 0) | |
4016 | { | |
4017 | /* Padding specified. Don't let it be more than | |
4018 | current maximum. */ | |
4019 | lim += hpos; | |
4020 | if (lim > maxendcol) | |
4021 | lim = maxendcol; | |
4022 | /* If that's more padding than already wanted, queue it. | |
4023 | But don't reduce padding already specified even if | |
4024 | that is beyond the current truncation point. */ | |
4025 | if (lim > minendcol) | |
4026 | minendcol = lim; | |
4027 | } | |
4028 | goto tail_recurse; | |
4029 | } | |
e24c997d | 4030 | else if (STRINGP (car) || CONSP (car)) |
a2889657 JB |
4031 | { |
4032 | register int limit = 50; | |
4033 | /* LIMIT is to protect against circular lists. */ | |
e24c997d | 4034 | while (CONSP (elt) && --limit > 0 |
a2889657 JB |
4035 | && hpos < maxendcol) |
4036 | { | |
4037 | hpos = display_mode_element (w, vpos, hpos, depth, | |
4038 | hpos, maxendcol, | |
4039 | XCONS (elt)->car); | |
4040 | elt = XCONS (elt)->cdr; | |
4041 | } | |
4042 | } | |
4043 | } | |
4044 | break; | |
4045 | ||
4046 | default: | |
4047 | invalid: | |
d39b6696 KH |
4048 | if (frame_title_ptr) |
4049 | hpos = store_frame_title ("*invalid*", minendcol, maxendcol); | |
4050 | else | |
4051 | hpos = display_string (w, vpos, "*invalid*", -1, hpos, 0, 1, | |
4052 | minendcol, maxendcol); | |
4053 | return hpos; | |
a2889657 JB |
4054 | } |
4055 | ||
a2889657 | 4056 | if (minendcol > hpos) |
d39b6696 KH |
4057 | if (frame_title_ptr) |
4058 | hpos = store_frame_title ("", minendcol, maxendcol); | |
4059 | else | |
4060 | hpos = display_string (w, vpos, "", 0, hpos, 0, 1, minendcol, maxendcol); | |
a2889657 JB |
4061 | return hpos; |
4062 | } | |
4063 | \f | |
766525bc RS |
4064 | /* Write a null-terminated, right justified decimal representation of |
4065 | the positive integer D to BUF using a minimal field width WIDTH. */ | |
4066 | ||
4067 | static void | |
4068 | pint2str (buf, width, d) | |
4069 | register char *buf; | |
4070 | register int width; | |
4071 | register int d; | |
4072 | { | |
4073 | register char *p = buf; | |
4074 | ||
4075 | if (d <= 0) | |
4076 | *p++ = '0'; | |
4077 | else | |
4078 | while (d > 0) | |
4079 | { | |
4080 | *p++ = d % 10 + '0'; | |
4081 | d /= 10; | |
4082 | } | |
4083 | for (width -= (int) (p - buf); width > 0; --width) *p++ = ' '; | |
4084 | *p-- = '\0'; | |
4085 | while (p > buf) | |
4086 | { | |
4087 | d = *buf; | |
4088 | *buf++ = *p; | |
4089 | *p-- = d; | |
4090 | } | |
4091 | } | |
4092 | ||
1c9241f5 KH |
4093 | /* Set a mnemonic character for CODING_SYSTEM (Lisp symbol) in BUF. |
4094 | If EOL_FLAG is 1, set also a mnemonic character for end-of-line | |
4095 | type of CODING_SYSTEM. Return updated pointer into BUF. */ | |
4096 | ||
4097 | static char * | |
4098 | decode_mode_spec_coding (coding_system, buf, eol_flag) | |
4099 | Lisp_Object coding_system; | |
4100 | register char *buf; | |
4101 | int eol_flag; | |
4102 | { | |
1e1078d6 | 4103 | Lisp_Object val; |
916848d8 | 4104 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
1e1078d6 RS |
4105 | |
4106 | val = coding_system; | |
1c9241f5 KH |
4107 | |
4108 | if (NILP (val)) /* Not yet decided. */ | |
4109 | { | |
916848d8 RS |
4110 | if (multibyte) |
4111 | *buf++ = '-'; | |
21e989e3 RS |
4112 | if (eol_flag) |
4113 | *buf++ = eol_mnemonic_undecided; | |
1e1078d6 | 4114 | /* Don't mention EOL conversion if it isn't decided. */ |
1c9241f5 KH |
4115 | } |
4116 | else | |
4117 | { | |
1e1078d6 RS |
4118 | Lisp_Object eolvalue; |
4119 | ||
4120 | eolvalue = Fget (coding_system, Qeol_type); | |
4121 | ||
1c9241f5 | 4122 | while (!NILP (val) && SYMBOLP (val)) |
1e1078d6 RS |
4123 | { |
4124 | val = Fget (val, Qcoding_system); | |
4125 | if (NILP (eolvalue)) | |
b070c1d7 | 4126 | eolvalue = Fget (val, Qeol_type); |
1e1078d6 RS |
4127 | } |
4128 | ||
916848d8 RS |
4129 | if (multibyte) |
4130 | *buf++ = XFASTINT (XVECTOR (val)->contents[1]); | |
4131 | ||
1c9241f5 KH |
4132 | if (eol_flag) |
4133 | { | |
1e1078d6 RS |
4134 | /* The EOL conversion we are using. */ |
4135 | int eoltype; | |
4136 | /* The EOL conversion that is normal on this system. */ | |
4137 | ||
4138 | if (NILP (eolvalue)) /* Not yet decided. */ | |
4139 | eoltype = eol_mnemonic_undecided; | |
4140 | else if (VECTORP (eolvalue)) /* Not yet decided. */ | |
4141 | eoltype = eol_mnemonic_undecided; | |
4142 | else /* INTEGERP (eolvalue) -- 0:LF, 1:CRLF, 2:CR */ | |
4143 | eoltype = (XFASTINT (eolvalue) == 0 | |
4144 | ? eol_mnemonic_unix | |
4145 | : (XFASTINT (eolvalue) == 1 | |
4146 | ? eol_mnemonic_dos : eol_mnemonic_mac)); | |
4147 | ||
4148 | /* Mention the EOL conversion if it is not the usual one. */ | |
4149 | *buf++ = eoltype; | |
1c9241f5 KH |
4150 | } |
4151 | } | |
4152 | return buf; | |
4153 | } | |
4154 | ||
a2889657 | 4155 | /* Return a string for the output of a mode line %-spec for window W, |
766525bc RS |
4156 | generated by character C. SPEC_WIDTH is the field width when |
4157 | padding to the left (%c, %l). The value returned from this | |
4158 | function will later be truncated to width MAXWIDTH. */ | |
a2889657 | 4159 | |
11e82b76 JB |
4160 | static char lots_of_dashes[] = "--------------------------------------------------------------------------------------------------------------------------------------------"; |
4161 | ||
a2889657 | 4162 | static char * |
766525bc | 4163 | decode_mode_spec (w, c, spec_width, maxwidth) |
a2889657 JB |
4164 | struct window *w; |
4165 | register char c; | |
766525bc | 4166 | register int spec_width; |
a2889657 JB |
4167 | register int maxwidth; |
4168 | { | |
0b67772d | 4169 | Lisp_Object obj; |
44fa5b1e JB |
4170 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
4171 | char *decode_mode_spec_buf = (char *) FRAME_TEMP_GLYPHS (f)->total_contents; | |
d39b6696 | 4172 | struct buffer *b = XBUFFER (w->buffer); |
a2889657 | 4173 | |
0b67772d | 4174 | obj = Qnil; |
44fa5b1e JB |
4175 | if (maxwidth > FRAME_WIDTH (f)) |
4176 | maxwidth = FRAME_WIDTH (f); | |
a2889657 JB |
4177 | |
4178 | switch (c) | |
4179 | { | |
1af9f229 RS |
4180 | case '*': |
4181 | if (!NILP (b->read_only)) | |
4182 | return "%"; | |
4183 | if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
4184 | return "*"; | |
4185 | return "-"; | |
4186 | ||
4187 | case '+': | |
4188 | /* This differs from %* only for a modified read-only buffer. */ | |
4189 | if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
4190 | return "*"; | |
4191 | if (!NILP (b->read_only)) | |
4192 | return "%"; | |
4193 | return "-"; | |
4194 | ||
4195 | case '&': | |
4196 | /* This differs from %* in ignoring read-only-ness. */ | |
4197 | if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
4198 | return "*"; | |
4199 | return "-"; | |
4200 | ||
4201 | case '%': | |
4202 | return "%"; | |
4203 | ||
4204 | case '[': | |
4205 | { | |
4206 | int i; | |
4207 | char *p; | |
4208 | ||
4209 | if (command_loop_level > 5) | |
4210 | return "[[[... "; | |
4211 | p = decode_mode_spec_buf; | |
4212 | for (i = 0; i < command_loop_level; i++) | |
4213 | *p++ = '['; | |
4214 | *p = 0; | |
4215 | return decode_mode_spec_buf; | |
4216 | } | |
4217 | ||
4218 | case ']': | |
4219 | { | |
4220 | int i; | |
4221 | char *p; | |
4222 | ||
4223 | if (command_loop_level > 5) | |
4224 | return " ...]]]"; | |
4225 | p = decode_mode_spec_buf; | |
4226 | for (i = 0; i < command_loop_level; i++) | |
4227 | *p++ = ']'; | |
4228 | *p = 0; | |
4229 | return decode_mode_spec_buf; | |
4230 | } | |
4231 | ||
4232 | case '-': | |
4233 | { | |
4234 | register char *p; | |
4235 | register int i; | |
4236 | ||
4237 | if (maxwidth < sizeof (lots_of_dashes)) | |
4238 | return lots_of_dashes; | |
4239 | else | |
4240 | { | |
4241 | for (p = decode_mode_spec_buf, i = maxwidth; i > 0; i--) | |
4242 | *p++ = '-'; | |
4243 | *p = '\0'; | |
4244 | } | |
4245 | return decode_mode_spec_buf; | |
4246 | } | |
4247 | ||
a2889657 | 4248 | case 'b': |
d39b6696 | 4249 | obj = b->name; |
a2889657 JB |
4250 | #if 0 |
4251 | if (maxwidth >= 3 && XSTRING (obj)->size > maxwidth) | |
4252 | { | |
4253 | bcopy (XSTRING (obj)->data, decode_mode_spec_buf, maxwidth - 1); | |
4254 | decode_mode_spec_buf[maxwidth - 1] = '\\'; | |
4255 | decode_mode_spec_buf[maxwidth] = '\0'; | |
4256 | return decode_mode_spec_buf; | |
4257 | } | |
4258 | #endif | |
4259 | break; | |
4260 | ||
1af9f229 RS |
4261 | case 'c': |
4262 | { | |
4263 | int col = current_column (); | |
4264 | XSETFASTINT (w->column_number_displayed, col); | |
766525bc | 4265 | pint2str (decode_mode_spec_buf, spec_width, col); |
1af9f229 RS |
4266 | return decode_mode_spec_buf; |
4267 | } | |
4268 | ||
4269 | case 'F': | |
4270 | /* %F displays the frame name. */ | |
95184b48 RS |
4271 | if (!NILP (f->title)) |
4272 | return (char *) XSTRING (f->title)->data; | |
fd8ff63d | 4273 | if (f->explicit_name || ! FRAME_WINDOW_P (f)) |
95184b48 | 4274 | return (char *) XSTRING (f->name)->data; |
9c6da96f | 4275 | return "Emacs"; |
1af9f229 | 4276 | |
a2889657 | 4277 | case 'f': |
d39b6696 | 4278 | obj = b->filename; |
a2889657 | 4279 | #if 0 |
265a9e55 | 4280 | if (NILP (obj)) |
a2889657 | 4281 | return "[none]"; |
e24c997d | 4282 | else if (STRINGP (obj) && XSTRING (obj)->size > maxwidth) |
a2889657 JB |
4283 | { |
4284 | bcopy ("...", decode_mode_spec_buf, 3); | |
4285 | bcopy (XSTRING (obj)->data + XSTRING (obj)->size - maxwidth + 3, | |
4286 | decode_mode_spec_buf + 3, maxwidth - 3); | |
4287 | return decode_mode_spec_buf; | |
4288 | } | |
4289 | #endif | |
4290 | break; | |
4291 | ||
aa6d10fa RS |
4292 | case 'l': |
4293 | { | |
4294 | int startpos = marker_position (w->start); | |
4295 | int line, linepos, topline; | |
4296 | int nlines, junk; | |
4297 | Lisp_Object tem; | |
4298 | int height = XFASTINT (w->height); | |
4299 | ||
4300 | /* If we decided that this buffer isn't suitable for line numbers, | |
4301 | don't forget that too fast. */ | |
4302 | if (EQ (w->base_line_pos, w->buffer)) | |
766525bc | 4303 | goto no_value; |
5300fd39 RS |
4304 | /* But do forget it, if the window shows a different buffer now. */ |
4305 | else if (BUFFERP (w->base_line_pos)) | |
4306 | w->base_line_pos = Qnil; | |
aa6d10fa RS |
4307 | |
4308 | /* If the buffer is very big, don't waste time. */ | |
d39b6696 | 4309 | if (BUF_ZV (b) - BUF_BEGV (b) > line_number_display_limit) |
aa6d10fa RS |
4310 | { |
4311 | w->base_line_pos = Qnil; | |
4312 | w->base_line_number = Qnil; | |
766525bc | 4313 | goto no_value; |
aa6d10fa RS |
4314 | } |
4315 | ||
4316 | if (!NILP (w->base_line_number) | |
4317 | && !NILP (w->base_line_pos) | |
4318 | && XFASTINT (w->base_line_pos) <= marker_position (w->start)) | |
4319 | { | |
4320 | line = XFASTINT (w->base_line_number); | |
4321 | linepos = XFASTINT (w->base_line_pos); | |
4322 | } | |
4323 | else | |
4324 | { | |
4325 | line = 1; | |
d39b6696 | 4326 | linepos = BUF_BEGV (b); |
aa6d10fa RS |
4327 | } |
4328 | ||
4329 | /* Count lines from base line to window start position. */ | |
4330 | nlines = display_count_lines (linepos, startpos, startpos, &junk); | |
4331 | ||
4332 | topline = nlines + line; | |
4333 | ||
4334 | /* Determine a new base line, if the old one is too close | |
4335 | or too far away, or if we did not have one. | |
4336 | "Too close" means it's plausible a scroll-down would | |
4337 | go back past it. */ | |
d39b6696 | 4338 | if (startpos == BUF_BEGV (b)) |
aa6d10fa | 4339 | { |
c2213350 KH |
4340 | XSETFASTINT (w->base_line_number, topline); |
4341 | XSETFASTINT (w->base_line_pos, BUF_BEGV (b)); | |
aa6d10fa RS |
4342 | } |
4343 | else if (nlines < height + 25 || nlines > height * 3 + 50 | |
d39b6696 | 4344 | || linepos == BUF_BEGV (b)) |
aa6d10fa | 4345 | { |
d39b6696 | 4346 | int limit = BUF_BEGV (b); |
aa6d10fa RS |
4347 | int position; |
4348 | int distance = (height * 2 + 30) * 200; | |
4349 | ||
4350 | if (startpos - distance > limit) | |
4351 | limit = startpos - distance; | |
4352 | ||
4353 | nlines = display_count_lines (startpos, limit, | |
4354 | -(height * 2 + 30), | |
4355 | &position); | |
4356 | /* If we couldn't find the lines we wanted within | |
4357 | 200 chars per line, | |
4358 | give up on line numbers for this window. */ | |
4359 | if (position == startpos - distance) | |
4360 | { | |
4361 | w->base_line_pos = w->buffer; | |
4362 | w->base_line_number = Qnil; | |
766525bc | 4363 | goto no_value; |
aa6d10fa RS |
4364 | } |
4365 | ||
c2213350 KH |
4366 | XSETFASTINT (w->base_line_number, topline - nlines); |
4367 | XSETFASTINT (w->base_line_pos, position); | |
aa6d10fa RS |
4368 | } |
4369 | ||
4370 | /* Now count lines from the start pos to point. */ | |
4371 | nlines = display_count_lines (startpos, PT, PT, &junk); | |
4372 | ||
4373 | /* Record that we did display the line number. */ | |
4374 | line_number_displayed = 1; | |
4375 | ||
4376 | /* Make the string to show. */ | |
766525bc | 4377 | pint2str (decode_mode_spec_buf, spec_width, topline + nlines); |
aa6d10fa | 4378 | return decode_mode_spec_buf; |
766525bc RS |
4379 | no_value: |
4380 | { | |
4381 | char* p = decode_mode_spec_buf; | |
4382 | for (spec_width -= 2; spec_width > 0; --spec_width) *p++ = ' '; | |
4383 | strcpy (p, "??"); | |
4384 | return decode_mode_spec_buf; | |
4385 | } | |
aa6d10fa RS |
4386 | } |
4387 | break; | |
4388 | ||
a2889657 | 4389 | case 'm': |
d39b6696 | 4390 | obj = b->mode_name; |
a2889657 JB |
4391 | break; |
4392 | ||
4393 | case 'n': | |
d39b6696 | 4394 | if (BUF_BEGV (b) > BUF_BEG (b) || BUF_ZV (b) < BUF_Z (b)) |
a2889657 JB |
4395 | return " Narrow"; |
4396 | break; | |
4397 | ||
a2889657 JB |
4398 | case 'p': |
4399 | { | |
4400 | int pos = marker_position (w->start); | |
d39b6696 | 4401 | int total = BUF_ZV (b) - BUF_BEGV (b); |
a2889657 | 4402 | |
d39b6696 | 4403 | if (XFASTINT (w->window_end_pos) <= BUF_Z (b) - BUF_ZV (b)) |
a2889657 | 4404 | { |
d39b6696 | 4405 | if (pos <= BUF_BEGV (b)) |
a2889657 JB |
4406 | return "All"; |
4407 | else | |
4408 | return "Bottom"; | |
4409 | } | |
d39b6696 | 4410 | else if (pos <= BUF_BEGV (b)) |
a2889657 JB |
4411 | return "Top"; |
4412 | else | |
4413 | { | |
3c7d31b9 RS |
4414 | if (total > 1000000) |
4415 | /* Do it differently for a large value, to avoid overflow. */ | |
4416 | total = ((pos - BUF_BEGV (b)) + (total / 100) - 1) / (total / 100); | |
4417 | else | |
4418 | total = ((pos - BUF_BEGV (b)) * 100 + total - 1) / total; | |
a2889657 JB |
4419 | /* We can't normally display a 3-digit number, |
4420 | so get us a 2-digit number that is close. */ | |
4421 | if (total == 100) | |
4422 | total = 99; | |
4423 | sprintf (decode_mode_spec_buf, "%2d%%", total); | |
4424 | return decode_mode_spec_buf; | |
4425 | } | |
4426 | } | |
4427 | ||
8ffcb79f RS |
4428 | /* Display percentage of size above the bottom of the screen. */ |
4429 | case 'P': | |
4430 | { | |
4431 | int toppos = marker_position (w->start); | |
d39b6696 KH |
4432 | int botpos = BUF_Z (b) - XFASTINT (w->window_end_pos); |
4433 | int total = BUF_ZV (b) - BUF_BEGV (b); | |
8ffcb79f | 4434 | |
d39b6696 | 4435 | if (botpos >= BUF_ZV (b)) |
8ffcb79f | 4436 | { |
d39b6696 | 4437 | if (toppos <= BUF_BEGV (b)) |
8ffcb79f RS |
4438 | return "All"; |
4439 | else | |
4440 | return "Bottom"; | |
4441 | } | |
4442 | else | |
4443 | { | |
3c7d31b9 RS |
4444 | if (total > 1000000) |
4445 | /* Do it differently for a large value, to avoid overflow. */ | |
4446 | total = ((botpos - BUF_BEGV (b)) + (total / 100) - 1) / (total / 100); | |
4447 | else | |
4448 | total = ((botpos - BUF_BEGV (b)) * 100 + total - 1) / total; | |
8ffcb79f RS |
4449 | /* We can't normally display a 3-digit number, |
4450 | so get us a 2-digit number that is close. */ | |
4451 | if (total == 100) | |
4452 | total = 99; | |
d39b6696 | 4453 | if (toppos <= BUF_BEGV (b)) |
8ffcb79f RS |
4454 | sprintf (decode_mode_spec_buf, "Top%2d%%", total); |
4455 | else | |
4456 | sprintf (decode_mode_spec_buf, "%2d%%", total); | |
4457 | return decode_mode_spec_buf; | |
4458 | } | |
4459 | } | |
4460 | ||
1af9f229 RS |
4461 | case 's': |
4462 | /* status of process */ | |
4463 | obj = Fget_buffer_process (w->buffer); | |
4464 | if (NILP (obj)) | |
4465 | return "no process"; | |
4466 | #ifdef subprocesses | |
4467 | obj = Fsymbol_name (Fprocess_status (obj)); | |
4468 | #endif | |
4469 | break; | |
d39b6696 | 4470 | |
1af9f229 RS |
4471 | case 't': /* indicate TEXT or BINARY */ |
4472 | #ifdef MODE_LINE_BINARY_TEXT | |
4473 | return MODE_LINE_BINARY_TEXT (b); | |
4474 | #else | |
4475 | return "T"; | |
4476 | #endif | |
1c9241f5 KH |
4477 | |
4478 | case 'z': | |
4479 | /* coding-system (not including end-of-line format) */ | |
4480 | case 'Z': | |
4481 | /* coding-system (including end-of-line type) */ | |
4482 | { | |
4483 | int eol_flag = (c == 'Z'); | |
539b4d41 | 4484 | char *p = decode_mode_spec_buf; |
1c9241f5 | 4485 | |
1c9241f5 KH |
4486 | if (FRAME_TERMCAP_P (f)) |
4487 | { | |
11c52c4f RS |
4488 | /* No need to mention EOL here--the terminal never needs |
4489 | to do EOL conversion. */ | |
4490 | p = decode_mode_spec_coding (keyboard_coding.symbol, p, 0); | |
4491 | p = decode_mode_spec_coding (terminal_coding.symbol, p, 0); | |
1c9241f5 | 4492 | } |
f13c925f | 4493 | p = decode_mode_spec_coding (b->buffer_file_coding_system, |
539b4d41 | 4494 | p, eol_flag); |
f13c925f | 4495 | |
11c52c4f | 4496 | #if 0 /* This proves to be annoying; I think we can do without. -- rms. */ |
1c9241f5 KH |
4497 | #ifdef subprocesses |
4498 | obj = Fget_buffer_process (Fcurrent_buffer ()); | |
4499 | if (PROCESSP (obj)) | |
4500 | { | |
4501 | p = decode_mode_spec_coding (XPROCESS (obj)->decode_coding_system, | |
4502 | p, eol_flag); | |
4503 | p = decode_mode_spec_coding (XPROCESS (obj)->encode_coding_system, | |
4504 | p, eol_flag); | |
4505 | } | |
4506 | #endif /* subprocesses */ | |
11c52c4f | 4507 | #endif /* 0 */ |
1c9241f5 KH |
4508 | *p = 0; |
4509 | return decode_mode_spec_buf; | |
4510 | } | |
a2889657 | 4511 | } |
d39b6696 | 4512 | |
e24c997d | 4513 | if (STRINGP (obj)) |
a2889657 JB |
4514 | return (char *) XSTRING (obj)->data; |
4515 | else | |
4516 | return ""; | |
4517 | } | |
59b49f63 RS |
4518 | \f |
4519 | /* Search for COUNT instances of a line boundary, which means either a | |
4520 | newline or (if selective display enabled) a carriage return. | |
4521 | Start at START. If COUNT is negative, search backwards. | |
4522 | ||
4523 | If we find COUNT instances, set *SHORTAGE to zero, and return the | |
4524 | position after the COUNTth match. Note that for reverse motion | |
4525 | this is not the same as the usual convention for Emacs motion commands. | |
4526 | ||
4527 | If we don't find COUNT instances before reaching the end of the | |
4528 | buffer (or the beginning, if scanning backwards), set *SHORTAGE to | |
4529 | the number of line boundaries left unfound, and return the end of the | |
4530 | buffer we bumped up against. */ | |
4531 | ||
4532 | static int | |
4533 | display_scan_buffer (start, count, shortage) | |
4534 | int *shortage, start; | |
4535 | register int count; | |
4536 | { | |
4537 | int limit = ((count > 0) ? ZV - 1 : BEGV); | |
4538 | int direction = ((count > 0) ? 1 : -1); | |
4539 | ||
4540 | register unsigned char *cursor; | |
4541 | unsigned char *base; | |
4542 | ||
4543 | register int ceiling; | |
4544 | register unsigned char *ceiling_addr; | |
4545 | ||
4546 | /* If we are not in selective display mode, | |
4547 | check only for newlines. */ | |
4548 | if (! (!NILP (current_buffer->selective_display) | |
4549 | && !INTEGERP (current_buffer->selective_display))) | |
ae474ea9 | 4550 | return scan_buffer ('\n', start, 0, count, shortage, 0); |
59b49f63 RS |
4551 | |
4552 | /* The code that follows is like scan_buffer | |
4553 | but checks for either newline or carriage return. */ | |
4554 | ||
4555 | if (shortage != 0) | |
4556 | *shortage = 0; | |
4557 | ||
4558 | if (count > 0) | |
4559 | while (start != limit + 1) | |
4560 | { | |
4561 | ceiling = BUFFER_CEILING_OF (start); | |
4562 | ceiling = min (limit, ceiling); | |
1c9241f5 KH |
4563 | ceiling_addr = POS_ADDR (ceiling) + 1; |
4564 | base = (cursor = POS_ADDR (start)); | |
59b49f63 RS |
4565 | while (1) |
4566 | { | |
4567 | while (*cursor != '\n' && *cursor != 015 && ++cursor != ceiling_addr) | |
4568 | ; | |
4569 | if (cursor != ceiling_addr) | |
4570 | { | |
4571 | if (--count == 0) | |
4572 | { | |
4573 | immediate_quit = 0; | |
4574 | return (start + cursor - base + 1); | |
4575 | } | |
4576 | else | |
4577 | if (++cursor == ceiling_addr) | |
4578 | break; | |
4579 | } | |
4580 | else | |
4581 | break; | |
4582 | } | |
4583 | start += cursor - base; | |
4584 | } | |
4585 | else | |
4586 | { | |
4587 | start--; /* first character we scan */ | |
4588 | while (start > limit - 1) | |
4589 | { /* we WILL scan under start */ | |
4590 | ceiling = BUFFER_FLOOR_OF (start); | |
4591 | ceiling = max (limit, ceiling); | |
1c9241f5 KH |
4592 | ceiling_addr = POS_ADDR (ceiling) - 1; |
4593 | base = (cursor = POS_ADDR (start)); | |
59b49f63 RS |
4594 | cursor++; |
4595 | while (1) | |
4596 | { | |
4597 | while (--cursor != ceiling_addr | |
4598 | && *cursor != '\n' && *cursor != 015) | |
4599 | ; | |
4600 | if (cursor != ceiling_addr) | |
4601 | { | |
4602 | if (++count == 0) | |
4603 | { | |
4604 | immediate_quit = 0; | |
4605 | return (start + cursor - base + 1); | |
4606 | } | |
4607 | } | |
4608 | else | |
4609 | break; | |
4610 | } | |
4611 | start += cursor - base; | |
4612 | } | |
4613 | } | |
4614 | ||
4615 | if (shortage != 0) | |
4616 | *shortage = count * direction; | |
4617 | return (start + ((direction == 1 ? 0 : 1))); | |
4618 | } | |
aa6d10fa RS |
4619 | |
4620 | /* Count up to N lines starting from FROM. | |
4621 | But don't go beyond LIMIT. | |
4622 | Return the number of lines thus found (always positive). | |
4623 | Store the position after what was found into *POS_PTR. */ | |
4624 | ||
4625 | static int | |
4626 | display_count_lines (from, limit, n, pos_ptr) | |
4627 | int from, limit, n; | |
4628 | int *pos_ptr; | |
4629 | { | |
4630 | int oldbegv = BEGV; | |
4631 | int oldzv = ZV; | |
4632 | int shortage = 0; | |
4633 | ||
4634 | if (limit < from) | |
4635 | BEGV = limit; | |
4636 | else | |
4637 | ZV = limit; | |
4638 | ||
59b49f63 | 4639 | *pos_ptr = display_scan_buffer (from, n, &shortage); |
aa6d10fa RS |
4640 | |
4641 | ZV = oldzv; | |
4642 | BEGV = oldbegv; | |
4643 | ||
4644 | if (n < 0) | |
4645 | /* When scanning backwards, scan_buffer stops *after* the last newline | |
4646 | it finds, but does count it. Compensate for that. */ | |
4647 | return - n - shortage - (*pos_ptr != limit); | |
4648 | return n - shortage; | |
4649 | } | |
a2889657 JB |
4650 | \f |
4651 | /* Display STRING on one line of window W, starting at HPOS. | |
4652 | Display at position VPOS. Caller should have done get_display_line. | |
11e82b76 | 4653 | If VPOS == -1, display it as the current frame's title. |
90adcf20 | 4654 | LENGTH is the length of STRING, or -1 meaning STRING is null-terminated. |
a2889657 JB |
4655 | |
4656 | TRUNCATE is GLYPH to display at end if truncated. Zero for none. | |
4657 | ||
4658 | MINCOL is the first column ok to end at. (Pad with spaces to this col.) | |
4659 | MAXCOL is the last column ok to end at. Truncate here. | |
4660 | -1 for MINCOL or MAXCOL means no explicit minimum or maximum. | |
44fa5b1e | 4661 | Both count from the left edge of the frame, as does HPOS. |
a2889657 JB |
4662 | The right edge of W is an implicit maximum. |
4663 | If TRUNCATE is nonzero, the implicit maximum is one column before the edge. | |
4664 | ||
278feba9 RS |
4665 | OBEY_WINDOW_WIDTH says to put spaces or vertical bars |
4666 | at the place where the current window ends in this line | |
4667 | and not display anything beyond there. Otherwise, only MAXCOL | |
4668 | controls where to stop output. | |
4669 | ||
4670 | Returns ending hpos. */ | |
a2889657 JB |
4671 | |
4672 | static int | |
278feba9 RS |
4673 | display_string (w, vpos, string, length, hpos, truncate, |
4674 | obey_window_width, mincol, maxcol) | |
a2889657 JB |
4675 | struct window *w; |
4676 | unsigned char *string; | |
90adcf20 | 4677 | int length; |
a2889657 JB |
4678 | int vpos, hpos; |
4679 | GLYPH truncate; | |
278feba9 | 4680 | int obey_window_width; |
a2889657 JB |
4681 | int mincol, maxcol; |
4682 | { | |
4683 | register int c; | |
d3413a53 | 4684 | int truncated; |
a2889657 JB |
4685 | register GLYPH *p1; |
4686 | int hscroll = XINT (w->hscroll); | |
253c7d2f | 4687 | int tab_width = XINT (XBUFFER (w->buffer)->tab_width); |
a2889657 JB |
4688 | register GLYPH *start; |
4689 | register GLYPH *end; | |
b1d1124b JB |
4690 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
4691 | struct frame_glyphs *desired_glyphs = FRAME_DESIRED_GLYPHS (f); | |
a2889657 JB |
4692 | GLYPH *p1start = desired_glyphs->glyphs[vpos] + hpos; |
4693 | int window_width = XFASTINT (w->width); | |
1c9241f5 KH |
4694 | /* If 1, we must display multibyte characters. */ |
4695 | int multibyte = !NILP (XBUFFER (w->buffer)->enable_multibyte_characters); | |
a2889657 JB |
4696 | |
4697 | /* Use the standard display table, not the window's display table. | |
4698 | We don't want the mode line in rot13. */ | |
f908610f | 4699 | register struct Lisp_Char_Table *dp = 0; |
efc63ef0 | 4700 | int i; |
a2889657 | 4701 | |
f908610f RS |
4702 | if (DISP_TABLE_P (Vstandard_display_table)) |
4703 | dp = XCHAR_TABLE (Vstandard_display_table); | |
a2889657 | 4704 | |
54ff581a | 4705 | if (tab_width <= 0 || tab_width > 1000) tab_width = 8; |
a2889657 JB |
4706 | |
4707 | p1 = p1start; | |
a27062f0 | 4708 | start = desired_glyphs->glyphs[vpos]; |
a2889657 | 4709 | |
278feba9 | 4710 | if (obey_window_width) |
b1d1124b | 4711 | { |
a27062f0 | 4712 | start += XFASTINT (w->left); |
278feba9 RS |
4713 | end = start + window_width - (truncate != 0); |
4714 | ||
73f194f1 | 4715 | if (!WINDOW_RIGHTMOST_P (w)) |
b1d1124b | 4716 | { |
73f194f1 | 4717 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT (f)) |
278feba9 RS |
4718 | { |
4719 | int i; | |
b1d1124b | 4720 | |
5802e919 | 4721 | for (i = 0; i < FRAME_SCROLL_BAR_COLS (f); i++) |
278feba9 RS |
4722 | *end-- = ' '; |
4723 | } | |
73f194f1 | 4724 | else if (!FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
278feba9 | 4725 | *end-- = '|'; |
b1d1124b | 4726 | } |
b1d1124b | 4727 | } |
a2889657 | 4728 | |
278feba9 RS |
4729 | if (! obey_window_width |
4730 | || (maxcol >= 0 && end - desired_glyphs->glyphs[vpos] > maxcol)) | |
a2889657 | 4731 | end = desired_glyphs->glyphs[vpos] + maxcol; |
278feba9 | 4732 | |
efc63ef0 | 4733 | /* Store 0 in charstart for these columns. */ |
bd5dec8e | 4734 | for (i = (hpos >= 0 ? hpos : 0); i < end - p1start + hpos; i++) |
efc63ef0 RS |
4735 | desired_glyphs->charstarts[vpos][i] = 0; |
4736 | ||
a2889657 JB |
4737 | if (maxcol >= 0 && mincol > maxcol) |
4738 | mincol = maxcol; | |
4739 | ||
1c9241f5 KH |
4740 | if (length < 0) |
4741 | /* We need this value for multibyte characters. */ | |
4742 | length = strlen (string); | |
4743 | ||
d3413a53 RS |
4744 | /* We set truncated to 1 if we get stopped by trying to pass END |
4745 | (that is, trying to pass MAXCOL.) */ | |
4746 | truncated = 0; | |
4747 | while (1) | |
a2889657 | 4748 | { |
1c9241f5 KH |
4749 | int len; |
4750 | ||
4751 | if (length <= 0) | |
90adcf20 | 4752 | break; |
1c9241f5 KH |
4753 | if (multibyte) |
4754 | c = STRING_CHAR_AND_LENGTH (string, length, len); | |
4755 | else | |
4756 | c = *string, len = 1; | |
4757 | ||
4758 | string += len, length -= len; | |
90adcf20 | 4759 | |
d3413a53 RS |
4760 | if (p1 >= end) |
4761 | { | |
4762 | truncated = 1; | |
4763 | break; | |
4764 | } | |
4765 | ||
376b0e59 RS |
4766 | if (dp != 0 && VECTORP (DISP_CHAR_VECTOR (dp, c))) |
4767 | { | |
4768 | p1 = copy_part_of_rope (f, p1, start, | |
4769 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->contents, | |
4770 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->size, | |
4771 | 0); | |
4772 | } | |
4773 | else if (c >= 040 && c < 0177) | |
a2889657 JB |
4774 | { |
4775 | if (p1 >= start) | |
4776 | *p1 = c; | |
4777 | p1++; | |
4778 | } | |
4779 | else if (c == '\t') | |
4780 | { | |
4781 | do | |
4782 | { | |
4783 | if (p1 >= start && p1 < end) | |
4784 | *p1 = SPACEGLYPH; | |
4785 | p1++; | |
4786 | } | |
4787 | while ((p1 - start + hscroll - (hscroll > 0)) % tab_width); | |
4788 | } | |
ded34426 | 4789 | else if (c < 0200 && ! NILP (buffer_defaults.ctl_arrow)) |
a2889657 JB |
4790 | { |
4791 | if (p1 >= start) | |
e57bca5d KH |
4792 | *p1 = (fix_glyph |
4793 | (f, (dp && INTEGERP (DISP_CTRL_GLYPH (dp)) | |
4794 | && GLYPH_CHAR_VALID_P (XINT (DISP_CTRL_GLYPH (dp))) | |
4795 | ? XINT (DISP_CTRL_GLYPH (dp)) : '^'), | |
4796 | 0)); | |
a2889657 | 4797 | p1++; |
6e8290aa | 4798 | if (p1 >= start && p1 < end) |
a2889657 JB |
4799 | *p1 = c ^ 0100; |
4800 | p1++; | |
4801 | } | |
1c9241f5 | 4802 | else if (len == 1) |
a2889657 | 4803 | { |
1c9241f5 | 4804 | /* C is a control character or a binary byte data. */ |
a2889657 | 4805 | if (p1 >= start) |
e57bca5d KH |
4806 | *p1 = (fix_glyph |
4807 | (f, (dp && INTEGERP (DISP_ESCAPE_GLYPH (dp)) | |
4808 | && GLYPH_CHAR_VALID_P (XINT (DISP_ESCAPE_GLYPH (dp))) | |
4809 | ? XINT (DISP_ESCAPE_GLYPH (dp)) : '\\'), | |
4810 | 0)); | |
a2889657 | 4811 | p1++; |
6e8290aa | 4812 | if (p1 >= start && p1 < end) |
a2889657 JB |
4813 | *p1 = (c >> 6) + '0'; |
4814 | p1++; | |
6e8290aa | 4815 | if (p1 >= start && p1 < end) |
a2889657 JB |
4816 | *p1 = (7 & (c >> 3)) + '0'; |
4817 | p1++; | |
6e8290aa | 4818 | if (p1 >= start && p1 < end) |
a2889657 JB |
4819 | *p1 = (7 & c) + '0'; |
4820 | p1++; | |
4821 | } | |
1c9241f5 KH |
4822 | else |
4823 | { | |
4824 | /* C is a multibyte character. */ | |
4825 | int charset = CHAR_CHARSET (c); | |
4826 | int columns = (charset == CHARSET_COMPOSITION | |
4827 | ? cmpchar_table[COMPOSITE_CHAR_ID (c)]->width | |
4828 | : CHARSET_WIDTH (charset)); | |
4829 | ||
4830 | if (p1 < start) | |
4831 | { | |
4832 | /* Since we can't show the left part of C, fill all | |
4833 | columns with spaces. */ | |
4834 | columns -= start - p1; | |
4835 | p1 = start; | |
4836 | while (columns--) | |
4837 | { | |
4838 | if (p1 < end) | |
4839 | *p1 = SPACEGLYPH; | |
4840 | p1++; | |
4841 | } | |
4842 | } | |
4843 | else if (p1 + columns > end) | |
4844 | { | |
4845 | /* Since we can't show the right part of C, fill all | |
4846 | columns with TRUNCATE if TRUNCATE is specified. */ | |
4847 | if (truncate) | |
4848 | { | |
4849 | while (p1 < end) | |
4850 | *p1++ = fix_glyph (f, truncate, 0); | |
4851 | /* And tell the line is truncated. */ | |
4852 | truncated = 1; | |
4853 | } | |
4854 | break; | |
4855 | } | |
4856 | else | |
4857 | { | |
4858 | /* We can show the whole glyph of C. */ | |
4859 | *p1++ = c; | |
4860 | while (--columns) | |
4861 | *p1++ = c | GLYPH_MASK_PADDING; | |
4862 | } | |
4863 | } | |
a2889657 JB |
4864 | } |
4865 | ||
d3413a53 | 4866 | if (truncated) |
a2889657 JB |
4867 | { |
4868 | p1 = end; | |
278feba9 | 4869 | if (truncate) *p1++ = fix_glyph (f, truncate, 0); |
a2889657 JB |
4870 | } |
4871 | else if (mincol >= 0) | |
4872 | { | |
4873 | end = desired_glyphs->glyphs[vpos] + mincol; | |
4874 | while (p1 < end) | |
4875 | *p1++ = SPACEGLYPH; | |
4876 | } | |
4877 | ||
4878 | { | |
4879 | register int len = p1 - desired_glyphs->glyphs[vpos]; | |
4880 | ||
4881 | if (len > desired_glyphs->used[vpos]) | |
4882 | desired_glyphs->used[vpos] = len; | |
4883 | desired_glyphs->glyphs[vpos][desired_glyphs->used[vpos]] = 0; | |
4884 | ||
4885 | return len; | |
4886 | } | |
4887 | } | |
4888 | \f | |
642eefc6 RS |
4889 | /* This is like a combination of memq and assq. |
4890 | Return 1 if PROPVAL appears as an element of LIST | |
4891 | or as the car of an element of LIST. | |
af460d46 RS |
4892 | If PROPVAL is a list, compare each element against LIST |
4893 | in that way, and return 1 if any element of PROPVAL is found in LIST. | |
642eefc6 RS |
4894 | Otherwise return 0. |
4895 | This function cannot quit. */ | |
4896 | ||
4897 | int | |
4898 | invisible_p (propval, list) | |
4899 | register Lisp_Object propval; | |
4900 | Lisp_Object list; | |
4901 | { | |
af460d46 RS |
4902 | register Lisp_Object tail, proptail; |
4903 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
642eefc6 RS |
4904 | { |
4905 | register Lisp_Object tem; | |
af460d46 | 4906 | tem = XCONS (tail)->car; |
642eefc6 RS |
4907 | if (EQ (propval, tem)) |
4908 | return 1; | |
4909 | if (CONSP (tem) && EQ (propval, XCONS (tem)->car)) | |
4910 | return 1; | |
4911 | } | |
af460d46 RS |
4912 | if (CONSP (propval)) |
4913 | for (proptail = propval; CONSP (proptail); | |
4914 | proptail = XCONS (proptail)->cdr) | |
4915 | { | |
4916 | Lisp_Object propelt; | |
4917 | propelt = XCONS (proptail)->car; | |
4918 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
4919 | { | |
4920 | register Lisp_Object tem; | |
4921 | tem = XCONS (tail)->car; | |
4922 | if (EQ (propelt, tem)) | |
4923 | return 1; | |
4924 | if (CONSP (tem) && EQ (propelt, XCONS (tem)->car)) | |
4925 | return 1; | |
4926 | } | |
4927 | } | |
642eefc6 RS |
4928 | return 0; |
4929 | } | |
4930 | ||
4931 | /* Return 1 if PROPVAL appears as the car of an element of LIST | |
4932 | and the cdr of that element is non-nil. | |
af460d46 RS |
4933 | If PROPVAL is a list, check each element of PROPVAL in that way, |
4934 | and the first time some element is found, | |
4935 | return 1 if the cdr of that element is non-nil. | |
642eefc6 RS |
4936 | Otherwise return 0. |
4937 | This function cannot quit. */ | |
4938 | ||
4939 | int | |
4940 | invisible_ellipsis_p (propval, list) | |
4941 | register Lisp_Object propval; | |
4942 | Lisp_Object list; | |
4943 | { | |
af460d46 RS |
4944 | register Lisp_Object tail, proptail; |
4945 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
642eefc6 RS |
4946 | { |
4947 | register Lisp_Object tem; | |
af460d46 | 4948 | tem = XCONS (tail)->car; |
642eefc6 RS |
4949 | if (CONSP (tem) && EQ (propval, XCONS (tem)->car)) |
4950 | return ! NILP (XCONS (tem)->cdr); | |
4951 | } | |
af460d46 RS |
4952 | if (CONSP (propval)) |
4953 | for (proptail = propval; CONSP (proptail); | |
4954 | proptail = XCONS (proptail)->cdr) | |
4955 | { | |
4956 | Lisp_Object propelt; | |
4957 | propelt = XCONS (proptail)->car; | |
4958 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
4959 | { | |
4960 | register Lisp_Object tem; | |
4961 | tem = XCONS (tail)->car; | |
4962 | if (CONSP (tem) && EQ (propelt, XCONS (tem)->car)) | |
4963 | return ! NILP (XCONS (tem)->cdr); | |
4964 | } | |
4965 | } | |
642eefc6 RS |
4966 | return 0; |
4967 | } | |
4968 | \f | |
a2889657 JB |
4969 | void |
4970 | syms_of_xdisp () | |
4971 | { | |
cf074754 RS |
4972 | staticpro (&Qmenu_bar_update_hook); |
4973 | Qmenu_bar_update_hook = intern ("menu-bar-update-hook"); | |
4974 | ||
d46fb96a | 4975 | staticpro (&Qoverriding_terminal_local_map); |
7079aefa | 4976 | Qoverriding_terminal_local_map = intern ("overriding-terminal-local-map"); |
d46fb96a | 4977 | |
399164b4 KH |
4978 | staticpro (&Qoverriding_local_map); |
4979 | Qoverriding_local_map = intern ("overriding-local-map"); | |
4980 | ||
75c43375 RS |
4981 | staticpro (&Qwindow_scroll_functions); |
4982 | Qwindow_scroll_functions = intern ("window-scroll-functions"); | |
4983 | ||
e0bfbde6 RS |
4984 | staticpro (&Qredisplay_end_trigger_functions); |
4985 | Qredisplay_end_trigger_functions = intern ("redisplay-end-trigger-functions"); | |
67481ae5 | 4986 | |
a2889657 JB |
4987 | staticpro (&last_arrow_position); |
4988 | staticpro (&last_arrow_string); | |
4989 | last_arrow_position = Qnil; | |
4990 | last_arrow_string = Qnil; | |
4991 | ||
4992 | DEFVAR_LISP ("global-mode-string", &Vglobal_mode_string, | |
8c45d522 | 4993 | "String (or mode line construct) included (normally) in `mode-line-format'."); |
a2889657 JB |
4994 | Vglobal_mode_string = Qnil; |
4995 | ||
4996 | DEFVAR_LISP ("overlay-arrow-position", &Voverlay_arrow_position, | |
4997 | "Marker for where to display an arrow on top of the buffer text.\n\ | |
4998 | This must be the beginning of a line in order to work.\n\ | |
4999 | See also `overlay-arrow-string'."); | |
5000 | Voverlay_arrow_position = Qnil; | |
5001 | ||
5002 | DEFVAR_LISP ("overlay-arrow-string", &Voverlay_arrow_string, | |
5003 | "String to display as an arrow. See also `overlay-arrow-position'."); | |
5004 | Voverlay_arrow_string = Qnil; | |
5005 | ||
5006 | DEFVAR_INT ("scroll-step", &scroll_step, | |
5007 | "*The number of lines to try scrolling a window by when point moves out.\n\ | |
44fa5b1e JB |
5008 | If that fails to bring point back on frame, point is centered instead.\n\ |
5009 | If this is zero, point is always centered after it moves off frame."); | |
a2889657 | 5010 | |
0789adb2 RS |
5011 | DEFVAR_INT ("scroll-conservatively", &scroll_conservatively, |
5012 | "*Scroll up to this many lines, to bring point back on screen."); | |
5013 | scroll_conservatively = 0; | |
5014 | ||
9afd2168 RS |
5015 | DEFVAR_INT ("scroll-margin", &scroll_margin, |
5016 | "*Number of lines of margin at the top and bottom of a window.\n\ | |
5017 | Recenter the window whenever point gets within this many lines\n\ | |
5018 | of the top or bottom of the window."); | |
5019 | scroll_margin = 0; | |
5020 | ||
a2889657 JB |
5021 | DEFVAR_INT ("debug-end-pos", &debug_end_pos, "Don't ask"); |
5022 | ||
5023 | DEFVAR_BOOL ("truncate-partial-width-windows", | |
5024 | &truncate_partial_width_windows, | |
44fa5b1e | 5025 | "*Non-nil means truncate lines in all windows less than full frame wide."); |
a2889657 JB |
5026 | truncate_partial_width_windows = 1; |
5027 | ||
5028 | DEFVAR_BOOL ("mode-line-inverse-video", &mode_line_inverse_video, | |
5029 | "*Non-nil means use inverse video for the mode line."); | |
5030 | mode_line_inverse_video = 1; | |
aa6d10fa RS |
5031 | |
5032 | DEFVAR_INT ("line-number-display-limit", &line_number_display_limit, | |
5033 | "*Maximum buffer size for which line number should be displayed."); | |
5034 | line_number_display_limit = 1000000; | |
fba9ce76 RS |
5035 | |
5036 | DEFVAR_BOOL ("highlight-nonselected-windows", &highlight_nonselected_windows, | |
5037 | "*Non-nil means highlight region even in nonselected windows."); | |
293a54ce | 5038 | highlight_nonselected_windows = 0; |
d39b6696 KH |
5039 | |
5040 | DEFVAR_BOOL ("multiple-frames", &multiple_frames, | |
3450d04c KH |
5041 | "Non-nil if more than one frame is visible on this display.\n\ |
5042 | Minibuffer-only frames don't count, but iconified frames do.\n\ | |
4c2eb242 RS |
5043 | This variable is not guaranteed to be accurate except while processing\n\ |
5044 | `frame-title-format' and `icon-title-format'."); | |
d39b6696 KH |
5045 | |
5046 | DEFVAR_LISP ("frame-title-format", &Vframe_title_format, | |
5047 | "Template for displaying the titlebar of visible frames.\n\ | |
5048 | \(Assuming the window manager supports this feature.)\n\ | |
5049 | This variable has the same structure as `mode-line-format' (which see),\n\ | |
5050 | and is used only on frames for which no explicit name has been set\n\ | |
5051 | \(see `modify-frame-parameters')."); | |
5052 | DEFVAR_LISP ("icon-title-format", &Vicon_title_format, | |
5053 | "Template for displaying the titlebar of an iconified frame.\n\ | |
5054 | \(Assuming the window manager supports this feature.)\n\ | |
5055 | This variable has the same structure as `mode-line-format' (which see),\n\ | |
5056 | and is used only on frames for which no explicit name has been set\n\ | |
5057 | \(see `modify-frame-parameters')."); | |
5058 | Vicon_title_format | |
5059 | = Vframe_title_format | |
5060 | = Fcons (intern ("multiple-frames"), | |
5061 | Fcons (build_string ("%b"), | |
5062 | Fcons (Fcons (build_string (""), | |
5063 | Fcons (intern ("invocation-name"), | |
5064 | Fcons (build_string ("@"), | |
5065 | Fcons (intern ("system-name"), | |
5066 | Qnil)))), | |
5067 | Qnil))); | |
5992c4f7 KH |
5068 | |
5069 | DEFVAR_LISP ("message-log-max", &Vmessage_log_max, | |
5070 | "Maximum number of lines to keep in the message log buffer.\n\ | |
5071 | If nil, disable message logging. If t, log messages but don't truncate\n\ | |
5072 | the buffer when it becomes large."); | |
5073 | XSETFASTINT (Vmessage_log_max, 50); | |
08b610e4 RS |
5074 | |
5075 | DEFVAR_LISP ("window-size-change-functions", &Vwindow_size_change_functions, | |
5076 | "Functions called before redisplay, if window sizes have changed.\n\ | |
5077 | The value should be a list of functions that take one argument.\n\ | |
5078 | Just before redisplay, for each frame, if any of its windows have changed\n\ | |
5079 | size since the last redisplay, or have been split or deleted,\n\ | |
5080 | all the functions in the list are called, with the frame as argument."); | |
5081 | Vwindow_size_change_functions = Qnil; | |
75c43375 RS |
5082 | |
5083 | DEFVAR_LISP ("window-scroll-functions", &Vwindow_scroll_functions, | |
f908610f | 5084 | "List of Functions to call before redisplaying a window with scrolling.\n\ |
75c43375 | 5085 | Each function is called with two arguments, the window\n\ |
8d9583b0 RS |
5086 | and its new display-start position. Note that the value of `window-end'\n\ |
5087 | is not valid when these functions are called."); | |
75c43375 | 5088 | Vwindow_scroll_functions = Qnil; |
a2889657 JB |
5089 | } |
5090 | ||
5091 | /* initialize the window system */ | |
5092 | init_xdisp () | |
5093 | { | |
5094 | Lisp_Object root_window; | |
5095 | #ifndef COMPILER_REGISTER_BUG | |
5096 | register | |
5097 | #endif /* COMPILER_REGISTER_BUG */ | |
5098 | struct window *mini_w; | |
5099 | ||
5100 | this_line_bufpos = 0; | |
5101 | ||
5102 | mini_w = XWINDOW (minibuf_window); | |
11e82b76 | 5103 | root_window = FRAME_ROOT_WINDOW (XFRAME (WINDOW_FRAME (mini_w))); |
a2889657 JB |
5104 | |
5105 | echo_area_glyphs = 0; | |
5106 | previous_echo_glyphs = 0; | |
5107 | ||
5108 | if (!noninteractive) | |
5109 | { | |
44fa5b1e | 5110 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (root_window))); |
12c226c5 RS |
5111 | XSETFASTINT (XWINDOW (root_window)->top, FRAME_MENU_BAR_LINES (f)); |
5112 | set_window_height (root_window, | |
5113 | FRAME_HEIGHT (f) - 1 - FRAME_MENU_BAR_LINES (f), | |
5114 | 0); | |
c2213350 | 5115 | XSETFASTINT (mini_w->top, FRAME_HEIGHT (f) - 1); |
a2889657 JB |
5116 | set_window_height (minibuf_window, 1, 0); |
5117 | ||
c2213350 KH |
5118 | XSETFASTINT (XWINDOW (root_window)->width, FRAME_WIDTH (f)); |
5119 | XSETFASTINT (mini_w->width, FRAME_WIDTH (f)); | |
a2889657 JB |
5120 | } |
5121 | } |