Commit | Line | Data |
---|---|---|
a2889657 | 1 | /* Display generation from window structure and buffer text. |
6f0429a9 | 2 | Copyright (C) 1985, 86, 87, 88, 93, 94, 95, 97, 1998 |
2384c010 | 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" | |
dfcf069d AS |
43 | #include "region-cache.h" |
44 | ||
45 | #ifdef HAVE_WINDOW_SYSTEM | |
46 | #include "xterm.h" | |
47 | #endif | |
a2889657 | 48 | |
8f3343d0 | 49 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
76412d64 | 50 | extern void set_frame_menubar (); |
cd6dfed6 | 51 | extern int pending_menu_activation; |
76412d64 RS |
52 | #endif |
53 | ||
a2889657 JB |
54 | extern int interrupt_input; |
55 | extern int command_loop_level; | |
56 | ||
b6436d4e RS |
57 | extern int minibuffer_auto_raise; |
58 | ||
c4628384 RS |
59 | extern Lisp_Object Qface; |
60 | ||
399164b4 KH |
61 | extern Lisp_Object Voverriding_local_map; |
62 | extern Lisp_Object Voverriding_local_map_menu_flag; | |
63 | ||
d46fb96a | 64 | Lisp_Object Qoverriding_local_map, Qoverriding_terminal_local_map; |
75c43375 | 65 | Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
e0bfbde6 | 66 | Lisp_Object Qredisplay_end_trigger_functions; |
2e54982e | 67 | Lisp_Object Qinhibit_point_motion_hooks; |
399164b4 | 68 | |
f88eb0b6 | 69 | /* Nonzero means print newline to stdout before next minibuffer message. */ |
a2889657 JB |
70 | |
71 | int noninteractive_need_newline; | |
72 | ||
f88eb0b6 KH |
73 | /* Nonzero means print newline to message log before next message. */ |
74 | ||
3c6595e0 | 75 | static int message_log_need_newline; |
f88eb0b6 | 76 | |
a2889657 JB |
77 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
78 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
210e752f KH |
79 | #define minmax(floor, val, ceil) \ |
80 | ((val) < (floor) ? (floor) : (val) > (ceil) ? (ceil) : (val)) | |
a2889657 JB |
81 | |
82 | /* The buffer position of the first character appearing | |
44fa5b1e JB |
83 | entirely or partially on the current frame line. |
84 | Or zero, which disables the optimization for the current frame line. */ | |
a2889657 JB |
85 | static int this_line_bufpos; |
86 | ||
87 | /* Number of characters past the end of this line, | |
88 | including the terminating newline */ | |
89 | static int this_line_endpos; | |
90 | ||
44fa5b1e | 91 | /* The vertical position of this frame line. */ |
a2889657 JB |
92 | static int this_line_vpos; |
93 | ||
44fa5b1e | 94 | /* Hpos value for start of display on this frame line. |
a2889657 JB |
95 | Usually zero, but negative if first character really began |
96 | on previous line */ | |
97 | static int this_line_start_hpos; | |
98 | ||
99 | /* Buffer that this_line variables are describing. */ | |
100 | static struct buffer *this_line_buffer; | |
101 | ||
a2889657 | 102 | /* Value of echo_area_glyphs when it was last acted on. |
44fa5b1e | 103 | If this is nonzero, there is a message on the frame |
a2889657 JB |
104 | in the minibuffer and it should be erased as soon |
105 | as it is no longer requested to appear. */ | |
106 | char *previous_echo_glyphs; | |
107 | ||
44fa5b1e | 108 | /* Nonzero means truncate lines in all windows less wide than the frame */ |
a2889657 JB |
109 | int truncate_partial_width_windows; |
110 | ||
d39b6696 KH |
111 | /* Nonzero means we have more than one non-minibuffer-only frame. |
112 | Not guaranteed to be accurate except while parsing frame-title-format. */ | |
113 | int multiple_frames; | |
114 | ||
a2889657 JB |
115 | Lisp_Object Vglobal_mode_string; |
116 | ||
117 | /* Marker for where to display an arrow on top of the buffer text. */ | |
118 | Lisp_Object Voverlay_arrow_position; | |
119 | ||
120 | /* String to display for the arrow. */ | |
121 | Lisp_Object Voverlay_arrow_string; | |
122 | ||
d45de95b RS |
123 | /* Values of those variables at last redisplay. |
124 | However, if Voverlay_arrow_position is a marker, | |
125 | last_arrow_position is its numerical position. */ | |
126 | static Lisp_Object last_arrow_position, last_arrow_string; | |
127 | ||
d39b6696 KH |
128 | /* Like mode-line-format, but for the titlebar on a visible frame. */ |
129 | Lisp_Object Vframe_title_format; | |
130 | ||
131 | /* Like mode-line-format, but for the titlebar on an iconified frame. */ | |
132 | Lisp_Object Vicon_title_format; | |
133 | ||
08b610e4 RS |
134 | /* List of functions to call when a window's size changes. These |
135 | functions get one arg, a frame on which one or more windows' sizes | |
136 | have changed. */ | |
137 | static Lisp_Object Vwindow_size_change_functions; | |
138 | ||
cf074754 RS |
139 | Lisp_Object Qmenu_bar_update_hook; |
140 | ||
a2889657 JB |
141 | /* Nonzero if overlay arrow has been displayed once in this window. */ |
142 | static int overlay_arrow_seen; | |
143 | ||
ca26e1c8 KH |
144 | /* Nonzero if visible end of buffer has already been displayed once |
145 | in this window. (We need this variable in case there are overlay | |
146 | strings that get displayed there.) */ | |
147 | static int zv_strings_seen; | |
148 | ||
fba9ce76 RS |
149 | /* Nonzero means highlight the region even in nonselected windows. */ |
150 | static int highlight_nonselected_windows; | |
151 | ||
44fa5b1e | 152 | /* If cursor motion alone moves point off frame, |
a2889657 | 153 | Try scrolling this many lines up or down if that will bring it back. */ |
14510fee | 154 | static int scroll_step; |
a2889657 | 155 | |
0789adb2 RS |
156 | /* Non-0 means scroll just far enough to bring point back on the screen, |
157 | when appropriate. */ | |
158 | static int scroll_conservatively; | |
159 | ||
9afd2168 RS |
160 | /* Recenter the window whenever point gets within this many lines |
161 | of the top or bottom of the window. */ | |
162 | int scroll_margin; | |
163 | ||
010494d0 KH |
164 | /* Number of characters of overlap to show, |
165 | when scrolling a one-line window such as a minibuffer. */ | |
166 | static int minibuffer_scroll_overlap; | |
167 | ||
a2889657 JB |
168 | /* Nonzero if try_window_id has made blank lines at window bottom |
169 | since the last redisplay that paused */ | |
170 | static int blank_end_of_window; | |
171 | ||
42640f83 RS |
172 | /* Number of windows showing the buffer of the selected window |
173 | (or another buffer with the same base buffer). | |
a2889657 JB |
174 | keyboard.c refers to this. */ |
175 | int buffer_shared; | |
176 | ||
44fa5b1e | 177 | /* display_text_line sets these to the frame position (origin 0) of point, |
a2889657 JB |
178 | whether the window is selected or not. |
179 | Set one to -1 first to determine whether point was found afterwards. */ | |
180 | ||
181 | static int cursor_vpos; | |
182 | static int cursor_hpos; | |
183 | ||
14510fee | 184 | static int debug_end_pos; |
a2889657 JB |
185 | |
186 | /* Nonzero means display mode line highlighted */ | |
187 | int mode_line_inverse_video; | |
188 | ||
e9874cee | 189 | static void redisplay_internal (); |
ff6c30e5 | 190 | static int message_log_check_duplicate (); |
a2889657 JB |
191 | static void echo_area_display (); |
192 | void mark_window_display_accurate (); | |
193 | static void redisplay_windows (); | |
194 | static void redisplay_window (); | |
90adcf20 | 195 | static void update_menu_bar (); |
a2889657 JB |
196 | static void try_window (); |
197 | static int try_window_id (); | |
198 | static struct position *display_text_line (); | |
199 | static void display_mode_line (); | |
200 | static int display_mode_element (); | |
a2889657 JB |
201 | static char *decode_mode_spec (); |
202 | static int display_string (); | |
7ce2c095 | 203 | static void display_menu_bar (); |
aa6d10fa | 204 | static int display_count_lines (); |
a2889657 JB |
205 | |
206 | /* Prompt to display in front of the minibuffer contents */ | |
8c5b6a0a | 207 | Lisp_Object minibuf_prompt; |
a2889657 JB |
208 | |
209 | /* Width in columns of current minibuffer prompt. */ | |
210 | int minibuf_prompt_width; | |
211 | ||
212 | /* Message to display instead of minibuffer contents | |
213 | This is what the functions error and message make, | |
214 | and command echoing uses it as well. | |
215 | It overrides the minibuf_prompt as well as the buffer. */ | |
216 | char *echo_area_glyphs; | |
217 | ||
90adcf20 RS |
218 | /* This is the length of the message in echo_area_glyphs. */ |
219 | int echo_area_glyphs_length; | |
220 | ||
73af359d RS |
221 | /* This is the window where the echo area message was displayed. |
222 | It is always a minibuffer window, but it may not be the | |
223 | same window currently active as a minibuffer. */ | |
224 | Lisp_Object echo_area_window; | |
225 | ||
a3788d53 RS |
226 | /* Nonzero means multibyte characters were enabled when the echo area |
227 | message was specified. */ | |
228 | int message_enable_multibyte; | |
229 | ||
a2889657 JB |
230 | /* true iff we should redraw the mode lines on the next redisplay */ |
231 | int update_mode_lines; | |
232 | ||
233 | /* Smallest number of characters before the gap | |
234 | at any time since last redisplay that finished. | |
235 | Valid for current buffer when try_window_id can be called. */ | |
236 | int beg_unchanged; | |
237 | ||
238 | /* Smallest number of characters after the gap | |
239 | at any time since last redisplay that finished. | |
240 | Valid for current buffer when try_window_id can be called. */ | |
241 | int end_unchanged; | |
242 | ||
243 | /* MODIFF as of last redisplay that finished; | |
8850a573 RS |
244 | if it matches MODIFF, and overlay_unchanged_modified |
245 | matches OVERLAY_MODIFF, that means beg_unchanged and end_unchanged | |
a2889657 JB |
246 | contain no useful information */ |
247 | int unchanged_modified; | |
248 | ||
8850a573 RS |
249 | /* OVERLAY_MODIFF as of last redisplay that finished. */ |
250 | int overlay_unchanged_modified; | |
251 | ||
a2889657 JB |
252 | /* Nonzero if window sizes or contents have changed |
253 | since last redisplay that finished */ | |
254 | int windows_or_buffers_changed; | |
255 | ||
aa6d10fa RS |
256 | /* Nonzero after display_mode_line if %l was used |
257 | and it displayed a line number. */ | |
258 | int line_number_displayed; | |
259 | ||
260 | /* Maximum buffer size for which to display line numbers. */ | |
14510fee | 261 | static int line_number_display_limit; |
5992c4f7 KH |
262 | |
263 | /* Number of lines to keep in the message log buffer. | |
264 | t means infinite. nil means don't log at all. */ | |
265 | Lisp_Object Vmessage_log_max; | |
d45de95b RS |
266 | |
267 | #define COERCE_MARKER(X) \ | |
377dbd97 | 268 | (MARKERP ((X)) ? Fmarker_position (X) : (X)) |
12adba34 RS |
269 | |
270 | static int pos_tab_offset P_ ((struct window *, int, int)); | |
a2889657 | 271 | \f |
1adc55de RS |
272 | /* Output a newline in the *Messages* buffer if "needs" one. */ |
273 | ||
3c6595e0 KH |
274 | void |
275 | message_log_maybe_newline () | |
276 | { | |
277 | if (message_log_need_newline) | |
0a9dc68b | 278 | message_dolog ("", 0, 1, 0); |
3c6595e0 KH |
279 | } |
280 | ||
281 | ||
d917be71 KH |
282 | /* Add a string to the message log, optionally terminated with a newline. |
283 | This function calls low-level routines in order to bypass text property | |
0a9dc68b RS |
284 | hooks, etc. which might not be safe to run. |
285 | MULTIBYTE, if nonzero, means interpret the contents of M as multibyte. */ | |
90adcf20 RS |
286 | |
287 | void | |
0a9dc68b | 288 | message_dolog (m, len, nlflag, multibyte) |
90adcf20 | 289 | char *m; |
0a9dc68b | 290 | int len, nlflag, multibyte; |
5992c4f7 | 291 | { |
f88eb0b6 | 292 | if (!NILP (Vmessage_log_max)) |
5992c4f7 KH |
293 | { |
294 | struct buffer *oldbuf; | |
12adba34 | 295 | Lisp_Object oldpoint, oldbegv, oldzv; |
69f033ab | 296 | int old_windows_or_buffers_changed = windows_or_buffers_changed; |
bab29e15 RS |
297 | int point_at_end = 0; |
298 | int zv_at_end = 0; | |
84dd0ae5 | 299 | Lisp_Object old_deactivate_mark; |
5992c4f7 | 300 | |
84dd0ae5 | 301 | old_deactivate_mark = Vdeactivate_mark; |
5992c4f7 | 302 | oldbuf = current_buffer; |
3c6595e0 | 303 | Fset_buffer (Fget_buffer_create (build_string ("*Messages*"))); |
16c300fb | 304 | current_buffer->undo_list = Qt; |
12adba34 RS |
305 | |
306 | oldpoint = Fpoint_marker (); | |
307 | oldbegv = Fpoint_min_marker (); | |
308 | oldzv = Fpoint_max_marker (); | |
309 | ||
6f0429a9 | 310 | if (PT == Z) |
bab29e15 | 311 | point_at_end = 1; |
6f0429a9 | 312 | if (ZV == Z) |
bab29e15 | 313 | zv_at_end = 1; |
12adba34 RS |
314 | |
315 | BEGV = BEG; | |
316 | BEGV_BYTE = BEG_BYTE; | |
317 | ZV = Z; | |
318 | ZV_BYTE = Z_BYTE; | |
319 | TEMP_SET_PT_BOTH (Z, Z_BYTE); | |
bab29e15 RS |
320 | |
321 | /* Insert the string--maybe converting multibyte to single byte | |
322 | or vice versa, so that all the text fits the buffer. */ | |
0a9dc68b | 323 | if (multibyte |
bab29e15 RS |
324 | && NILP (current_buffer->enable_multibyte_characters)) |
325 | { | |
326 | int c, i = 0, nbytes; | |
327 | /* Convert a multibyte string to single-byte | |
328 | for the *Message* buffer. */ | |
329 | while (i < len) | |
330 | { | |
331 | c = STRING_CHAR (m + i, len - i); | |
332 | i += XFASTINT (Fchar_bytes (make_number (c))); | |
333 | /* Truncate the character to its last byte--we can only hope | |
334 | the user is happy with the character he gets, | |
335 | since if it isn't right, there is no way to do it right. */ | |
336 | c &= 0xff; | |
337 | insert_char (c); | |
338 | } | |
339 | } | |
0a9dc68b | 340 | else if (! multibyte |
bab29e15 RS |
341 | && ! NILP (current_buffer->enable_multibyte_characters)) |
342 | { | |
6f0429a9 | 343 | int i = 0; |
bd4f53cc | 344 | unsigned char *msg = (unsigned char *) m; |
bab29e15 RS |
345 | /* Convert a single-byte string to multibyte |
346 | for the *Message* buffer. */ | |
347 | while (i < len) | |
348 | { | |
bd4f53cc | 349 | int c = unibyte_char_to_multibyte (msg[i++]); |
bab29e15 RS |
350 | insert_char (c); |
351 | } | |
352 | } | |
353 | else if (len) | |
12adba34 | 354 | insert_1 (m, len, 1, 0, 0); |
bab29e15 | 355 | |
f88eb0b6 | 356 | if (nlflag) |
5992c4f7 | 357 | { |
12adba34 RS |
358 | int this_bol, this_bol_byte, prev_bol, prev_bol_byte, dup; |
359 | insert_1 ("\n", 1, 1, 0, 0); | |
360 | ||
361 | scan_newline (Z, Z_BYTE, BEG, BEG_BYTE, -2, 0); | |
362 | this_bol = PT; | |
363 | this_bol_byte = PT_BYTE; | |
ff6c30e5 | 364 | |
ff6c30e5 KH |
365 | if (this_bol > BEG) |
366 | { | |
6f0429a9 | 367 | scan_newline (PT, PT_BYTE, BEG, BEG_BYTE, -2, 0); |
12adba34 RS |
368 | prev_bol = PT; |
369 | prev_bol_byte = PT_BYTE; | |
370 | ||
2d3ae3f0 KH |
371 | dup = message_log_check_duplicate (prev_bol, prev_bol_byte, |
372 | this_bol, this_bol_byte); | |
ff6c30e5 KH |
373 | if (dup) |
374 | { | |
bc69581b KH |
375 | del_range_both (prev_bol, prev_bol_byte, |
376 | this_bol, this_bol_byte, 0); | |
ff6c30e5 KH |
377 | if (dup > 1) |
378 | { | |
379 | char dupstr[40]; | |
380 | int duplen; | |
381 | ||
382 | /* If you change this format, don't forget to also | |
383 | change message_log_check_duplicate. */ | |
384 | sprintf (dupstr, " [%d times]", dup); | |
385 | duplen = strlen (dupstr); | |
12adba34 RS |
386 | TEMP_SET_PT_BOTH (Z - 1, Z_BYTE - 1); |
387 | insert_1 (dupstr, duplen, 1, 0, 1); | |
ff6c30e5 KH |
388 | } |
389 | } | |
390 | } | |
391 | ||
392 | if (NATNUMP (Vmessage_log_max)) | |
393 | { | |
12adba34 RS |
394 | scan_newline (Z, Z_BYTE, BEG, BEG_BYTE, |
395 | -XFASTINT (Vmessage_log_max) - 1, 0); | |
bc69581b | 396 | del_range_both (BEG, BEG_BYTE, PT, PT_BYTE, 0); |
ff6c30e5 | 397 | } |
5992c4f7 | 398 | } |
12adba34 RS |
399 | BEGV = XMARKER (oldbegv)->charpos; |
400 | BEGV_BYTE = marker_byte_position (oldbegv); | |
401 | ||
bab29e15 | 402 | if (zv_at_end) |
12adba34 RS |
403 | { |
404 | ZV = Z; | |
405 | ZV_BYTE = Z_BYTE; | |
406 | } | |
bab29e15 | 407 | else |
12adba34 RS |
408 | { |
409 | ZV = XMARKER (oldzv)->charpos; | |
410 | ZV_BYTE = marker_byte_position (oldzv); | |
411 | } | |
412 | ||
bab29e15 | 413 | if (point_at_end) |
12adba34 | 414 | TEMP_SET_PT_BOTH (Z, Z_BYTE); |
bab29e15 | 415 | else |
12adba34 RS |
416 | Fgoto_char (oldpoint); |
417 | ||
418 | free_marker (oldpoint); | |
419 | free_marker (oldbegv); | |
420 | free_marker (oldzv); | |
421 | ||
5992c4f7 | 422 | set_buffer_internal (oldbuf); |
69f033ab | 423 | windows_or_buffers_changed = old_windows_or_buffers_changed; |
3c6595e0 | 424 | message_log_need_newline = !nlflag; |
84dd0ae5 | 425 | Vdeactivate_mark = old_deactivate_mark; |
5992c4f7 | 426 | } |
f88eb0b6 KH |
427 | } |
428 | ||
ff6c30e5 KH |
429 | /* We are at the end of the buffer after just having inserted a newline. |
430 | (Note: We depend on the fact we won't be crossing the gap.) | |
431 | Check to see if the most recent message looks a lot like the previous one. | |
432 | Return 0 if different, 1 if the new one should just replace it, or a | |
433 | value N > 1 if we should also append " [N times]". */ | |
f82aff7c | 434 | |
ff6c30e5 | 435 | static int |
12adba34 | 436 | message_log_check_duplicate (prev_bol, prev_bol_byte, this_bol, this_bol_byte) |
ff6c30e5 | 437 | int prev_bol, this_bol; |
12adba34 | 438 | int prev_bol_byte, this_bol_byte; |
ff6c30e5 KH |
439 | { |
440 | int i; | |
441 | int len = Z - 1 - this_bol; | |
442 | int seen_dots = 0; | |
12adba34 RS |
443 | unsigned char *p1 = BUF_BYTE_ADDRESS (current_buffer, prev_bol_byte); |
444 | unsigned char *p2 = BUF_BYTE_ADDRESS (current_buffer, this_bol_byte); | |
ff6c30e5 KH |
445 | |
446 | for (i = 0; i < len; i++) | |
447 | { | |
448 | if (i >= 3 && p1[i-3] == '.' && p1[i-2] == '.' && p1[i-1] == '.' | |
449 | && p1[i] != '\n') | |
450 | seen_dots = 1; | |
451 | if (p1[i] != p2[i]) | |
452 | return seen_dots; | |
453 | } | |
454 | p1 += len; | |
455 | if (*p1 == '\n') | |
456 | return 2; | |
457 | if (*p1++ == ' ' && *p1++ == '[') | |
458 | { | |
459 | int n = 0; | |
460 | while (*p1 >= '0' && *p1 <= '9') | |
461 | n = n * 10 + *p1++ - '0'; | |
462 | if (strncmp (p1, " times]\n", 8) == 0) | |
463 | return n+1; | |
464 | } | |
465 | return 0; | |
466 | } | |
1adc55de | 467 | \f |
f88eb0b6 | 468 | /* Display an echo area message M with a specified length of LEN chars. |
1adc55de | 469 | The string may include null characters. If M is 0, clear out any |
f88eb0b6 | 470 | existing message, and let the minibuffer text show through. |
1adc55de RS |
471 | |
472 | The buffer M must continue to exist until after the echo area | |
473 | gets cleared or some other message gets displayed there. | |
474 | ||
475 | Do not pass text that is stored in a Lisp string. | |
476 | Do not pass text in a buffer that was alloca'd. */ | |
f88eb0b6 KH |
477 | |
478 | void | |
0a9dc68b | 479 | message2 (m, len, multibyte) |
f88eb0b6 KH |
480 | char *m; |
481 | int len; | |
0a9dc68b | 482 | int multibyte; |
f88eb0b6 KH |
483 | { |
484 | /* First flush out any partial line written with print. */ | |
3c6595e0 | 485 | message_log_maybe_newline (); |
f88eb0b6 | 486 | if (m) |
0a9dc68b RS |
487 | message_dolog (m, len, 1, multibyte); |
488 | message2_nolog (m, len, multibyte); | |
5992c4f7 KH |
489 | } |
490 | ||
491 | ||
1adc55de | 492 | /* The non-logging counterpart of message2. */ |
5992c4f7 KH |
493 | |
494 | void | |
44461111 | 495 | message2_nolog (m, len, multibyte) |
5992c4f7 KH |
496 | char *m; |
497 | int len; | |
90adcf20 | 498 | { |
44461111 | 499 | message_enable_multibyte = multibyte; |
a3788d53 | 500 | |
90adcf20 RS |
501 | if (noninteractive) |
502 | { | |
503 | if (noninteractive_need_newline) | |
504 | putc ('\n', stderr); | |
505 | noninteractive_need_newline = 0; | |
c3597849 RS |
506 | if (m) |
507 | fwrite (m, len, 1, stderr); | |
90adcf20 RS |
508 | if (cursor_in_echo_area == 0) |
509 | fprintf (stderr, "\n"); | |
510 | fflush (stderr); | |
511 | } | |
512 | /* A null message buffer means that the frame hasn't really been | |
513 | initialized yet. Error messages get reported properly by | |
514 | cmd_error, so this must be just an informative message; toss it. */ | |
515 | else if (INTERACTIVE && FRAME_MESSAGE_BUF (selected_frame)) | |
516 | { | |
73af359d RS |
517 | Lisp_Object mini_window; |
518 | FRAME_PTR f; | |
90adcf20 | 519 | |
73af359d RS |
520 | /* Get the frame containing the minibuffer |
521 | that the selected frame is using. */ | |
522 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
523 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
524 | ||
73af359d | 525 | FRAME_SAMPLE_VISIBILITY (f); |
90adcf20 | 526 | if (FRAME_VISIBLE_P (selected_frame) |
73af359d RS |
527 | && ! FRAME_VISIBLE_P (f)) |
528 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (mini_window))); | |
90adcf20 RS |
529 | |
530 | if (m) | |
531 | { | |
532 | echo_area_glyphs = m; | |
533 | echo_area_glyphs_length = len; | |
b6436d4e RS |
534 | |
535 | if (minibuffer_auto_raise) | |
536 | Fraise_frame (WINDOW_FRAME (XWINDOW (mini_window))); | |
90adcf20 | 537 | } |
ded34426 JB |
538 | else |
539 | echo_area_glyphs = previous_echo_glyphs = 0; | |
540 | ||
541 | do_pending_window_change (); | |
542 | echo_area_display (); | |
73af359d | 543 | update_frame (f, 1, 1); |
ded34426 | 544 | do_pending_window_change (); |
853cf346 | 545 | if (frame_up_to_date_hook != 0 && ! gc_in_progress) |
73af359d | 546 | (*frame_up_to_date_hook) (f); |
ded34426 JB |
547 | } |
548 | } | |
1adc55de | 549 | \f |
0a9dc68b RS |
550 | /* Display in echo area the null-terminated ASCII-only string M. |
551 | If M is 0, clear out any existing message, | |
552 | and let the minibuffer text show through. | |
1adc55de | 553 | |
0a9dc68b | 554 | The string M must continue to exist until after the echo area |
1adc55de RS |
555 | gets cleared or some other message gets displayed there. |
556 | ||
557 | Do not pass text that is stored in a Lisp string. | |
558 | Do not pass text in a buffer that was alloca'd. */ | |
ded34426 | 559 | |
48ae5f0a KH |
560 | void |
561 | message1 (m) | |
562 | char *m; | |
563 | { | |
0a9dc68b | 564 | message2 (m, (m ? strlen (m) : 0), 0); |
48ae5f0a KH |
565 | } |
566 | ||
0b1005ef KH |
567 | void |
568 | message1_nolog (m) | |
569 | char *m; | |
570 | { | |
0a9dc68b RS |
571 | message2_nolog (m, (m ? strlen (m) : 0), 0); |
572 | } | |
573 | ||
574 | /* Display a message M which contains a single %s | |
575 | which gets replaced with STRING. */ | |
576 | ||
577 | void | |
578 | message_with_string (m, string, log) | |
579 | char *m; | |
580 | Lisp_Object string; | |
581 | int log; | |
582 | { | |
583 | if (noninteractive) | |
584 | { | |
585 | if (m) | |
586 | { | |
587 | if (noninteractive_need_newline) | |
588 | putc ('\n', stderr); | |
589 | noninteractive_need_newline = 0; | |
590 | fprintf (stderr, m, XSTRING (string)->data); | |
591 | if (cursor_in_echo_area == 0) | |
592 | fprintf (stderr, "\n"); | |
593 | fflush (stderr); | |
594 | } | |
595 | } | |
596 | else if (INTERACTIVE) | |
597 | { | |
598 | /* The frame whose minibuffer we're going to display the message on. | |
599 | It may be larger than the selected frame, so we need | |
600 | to use its buffer, not the selected frame's buffer. */ | |
601 | Lisp_Object mini_window; | |
602 | FRAME_PTR f; | |
603 | ||
604 | /* Get the frame containing the minibuffer | |
605 | that the selected frame is using. */ | |
606 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
607 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
608 | ||
609 | /* A null message buffer means that the frame hasn't really been | |
610 | initialized yet. Error messages get reported properly by | |
611 | cmd_error, so this must be just an informative message; toss it. */ | |
612 | if (FRAME_MESSAGE_BUF (f)) | |
613 | { | |
614 | int len; | |
615 | char *a[1]; | |
616 | a[0] = (char *) XSTRING (string)->data; | |
617 | ||
618 | len = doprnt (FRAME_MESSAGE_BUF (f), | |
619 | FRAME_MESSAGE_BUF_SIZE (f), m, (char *)0, 3, a); | |
620 | ||
621 | if (log) | |
622 | message2 (FRAME_MESSAGE_BUF (f), len, | |
623 | STRING_MULTIBYTE (string)); | |
624 | else | |
625 | message2_nolog (FRAME_MESSAGE_BUF (f), len, | |
626 | STRING_MULTIBYTE (string)); | |
627 | ||
628 | /* Print should start at the beginning of the message | |
629 | buffer next time. */ | |
630 | message_buf_print = 0; | |
631 | } | |
632 | } | |
0b1005ef KH |
633 | } |
634 | ||
76412d64 RS |
635 | /* Truncate what will be displayed in the echo area |
636 | the next time we display it--but don't redisplay it now. */ | |
637 | ||
638 | void | |
639 | truncate_echo_area (len) | |
640 | int len; | |
641 | { | |
642 | /* A null message buffer means that the frame hasn't really been | |
643 | initialized yet. Error messages get reported properly by | |
644 | cmd_error, so this must be just an informative message; toss it. */ | |
645 | if (!noninteractive && INTERACTIVE && FRAME_MESSAGE_BUF (selected_frame)) | |
646 | echo_area_glyphs_length = len; | |
647 | } | |
648 | ||
44fa5b1e | 649 | /* Nonzero if FRAME_MESSAGE_BUF (selected_frame) is being used by print; |
9c74a0dd JB |
650 | zero if being used by message. */ |
651 | int message_buf_print; | |
652 | ||
1adc55de | 653 | /* Dump an informative message to the minibuf. If M is 0, clear out |
81d478f3 | 654 | any existing message, and let the minibuffer text show through. */ |
1adc55de | 655 | |
a2889657 | 656 | /* VARARGS 1 */ |
a2889657 JB |
657 | void |
658 | message (m, a1, a2, a3) | |
659 | char *m; | |
5d5ed907 | 660 | EMACS_INT a1, a2, a3; |
a2889657 JB |
661 | { |
662 | if (noninteractive) | |
663 | { | |
81d478f3 JB |
664 | if (m) |
665 | { | |
666 | if (noninteractive_need_newline) | |
667 | putc ('\n', stderr); | |
668 | noninteractive_need_newline = 0; | |
669 | fprintf (stderr, m, a1, a2, a3); | |
c4f14ccb RS |
670 | if (cursor_in_echo_area == 0) |
671 | fprintf (stderr, "\n"); | |
81d478f3 JB |
672 | fflush (stderr); |
673 | } | |
a2889657 | 674 | } |
1f40cad2 | 675 | else if (INTERACTIVE) |
a2889657 | 676 | { |
1f40cad2 JB |
677 | /* The frame whose minibuffer we're going to display the message on. |
678 | It may be larger than the selected frame, so we need | |
679 | to use its buffer, not the selected frame's buffer. */ | |
73af359d RS |
680 | Lisp_Object mini_window; |
681 | FRAME_PTR f; | |
682 | ||
683 | /* Get the frame containing the minibuffer | |
684 | that the selected frame is using. */ | |
685 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
686 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
1f40cad2 JB |
687 | |
688 | /* A null message buffer means that the frame hasn't really been | |
689 | initialized yet. Error messages get reported properly by | |
690 | cmd_error, so this must be just an informative message; toss it. */ | |
73af359d | 691 | if (FRAME_MESSAGE_BUF (f)) |
81d478f3 | 692 | { |
1f40cad2 JB |
693 | if (m) |
694 | { | |
90adcf20 | 695 | int len; |
a2889657 | 696 | #ifdef NO_ARG_ARRAY |
d5315282 AS |
697 | char *a[3]; |
698 | a[0] = (char *) a1; | |
699 | a[1] = (char *) a2; | |
700 | a[2] = (char *) a3; | |
a2889657 | 701 | |
73af359d | 702 | len = doprnt (FRAME_MESSAGE_BUF (f), |
1c9241f5 | 703 | FRAME_MESSAGE_BUF_SIZE (f), m, (char *)0, 3, a); |
a2889657 | 704 | #else |
73af359d | 705 | len = doprnt (FRAME_MESSAGE_BUF (f), |
12adba34 RS |
706 | FRAME_MESSAGE_BUF_SIZE (f), m, (char *)0, 3, |
707 | (char **) &a1); | |
1f40cad2 | 708 | #endif /* NO_ARG_ARRAY */ |
1f40cad2 | 709 | |
0a9dc68b | 710 | message2 (FRAME_MESSAGE_BUF (f), len, 0); |
1f40cad2 JB |
711 | } |
712 | else | |
713 | message1 (0); | |
714 | ||
715 | /* Print should start at the beginning of the message | |
716 | buffer next time. */ | |
717 | message_buf_print = 0; | |
81d478f3 | 718 | } |
a2889657 JB |
719 | } |
720 | } | |
721 | ||
1adc55de | 722 | /* The non-logging version of message. */ |
6c4429a5 KH |
723 | void |
724 | message_nolog (m, a1, a2, a3) | |
725 | char *m; | |
726 | EMACS_INT a1, a2, a3; | |
727 | { | |
728 | Lisp_Object old_log_max; | |
729 | old_log_max = Vmessage_log_max; | |
730 | Vmessage_log_max = Qnil; | |
731 | message (m, a1, a2, a3); | |
732 | Vmessage_log_max = old_log_max; | |
733 | } | |
734 | ||
131f2133 RS |
735 | void |
736 | update_echo_area () | |
737 | { | |
0a9dc68b RS |
738 | message2 (echo_area_glyphs, echo_area_glyphs_length, |
739 | ! NILP (current_buffer->enable_multibyte_characters)); | |
131f2133 | 740 | } |
1adc55de | 741 | \f |
a2889657 JB |
742 | static void |
743 | echo_area_display () | |
744 | { | |
745 | register int vpos; | |
44fa5b1e | 746 | FRAME_PTR f; |
73af359d | 747 | Lisp_Object mini_window; |
a2889657 | 748 | |
73af359d RS |
749 | /* Choose the minibuffer window for this display. |
750 | It is the minibuffer window used by the selected frame. */ | |
751 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
752 | /* This is the frame that window is in. */ | |
753 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
a2889657 | 754 | |
44fa5b1e | 755 | if (! FRAME_VISIBLE_P (f)) |
a2889657 | 756 | return; |
a2889657 | 757 | |
44fa5b1e | 758 | if (frame_garbaged) |
a2889657 | 759 | { |
02a9b6e4 | 760 | redraw_garbaged_frames (); |
44fa5b1e | 761 | frame_garbaged = 0; |
a2889657 JB |
762 | } |
763 | ||
764 | if (echo_area_glyphs || minibuf_level == 0) | |
765 | { | |
a2f016e3 RS |
766 | int i; |
767 | ||
73af359d RS |
768 | echo_area_window = mini_window; |
769 | ||
770 | vpos = XFASTINT (XWINDOW (mini_window)->top); | |
44fa5b1e | 771 | get_display_line (f, vpos, 0); |
a2f016e3 RS |
772 | |
773 | /* Make sure the columns that overlap a left-hand scroll bar | |
774 | are always clear. */ | |
775 | for (i = 0; i < FRAME_LEFT_SCROLL_BAR_WIDTH (f); i++) | |
776 | f->desired_glyphs->glyphs[vpos][i] = SPACEGLYPH; | |
777 | ||
73af359d | 778 | display_string (XWINDOW (mini_window), vpos, |
a2889657 | 779 | echo_area_glyphs ? echo_area_glyphs : "", |
90adcf20 | 780 | echo_area_glyphs ? echo_area_glyphs_length : -1, |
73f194f1 | 781 | FRAME_LEFT_SCROLL_BAR_WIDTH (f), |
21e989e3 | 782 | 0, 0, 0, |
a3788d53 RS |
783 | FRAME_WIDTH (f) + FRAME_LEFT_SCROLL_BAR_WIDTH (f), |
784 | message_enable_multibyte); | |
a2889657 | 785 | |
b6f0fe04 | 786 | #if 0 /* This just gets in the way. update_frame does the job. */ |
a2889657 | 787 | /* If desired cursor location is on this line, put it at end of text */ |
b5bbc9a5 KH |
788 | if (cursor_in_echo_area) |
789 | FRAME_CURSOR_Y (f) = vpos; | |
44fa5b1e JB |
790 | if (FRAME_CURSOR_Y (f) == vpos) |
791 | FRAME_CURSOR_X (f) = FRAME_DESIRED_GLYPHS (f)->used[vpos]; | |
b6f0fe04 | 792 | #endif |
daa37602 JB |
793 | |
794 | /* Fill the rest of the minibuffer window with blank lines. */ | |
795 | { | |
796 | int i; | |
797 | ||
b2a76982 | 798 | for (i = vpos + 1; |
73af359d | 799 | i < vpos + XFASTINT (XWINDOW (mini_window)->height); i++) |
daa37602 | 800 | { |
44fa5b1e | 801 | get_display_line (f, i, 0); |
b8333774 RS |
802 | /* We don't use FRAME_SCROLL_BAR_WIDTH (f) as the starting |
803 | hpos, because it is good to clear whatever is behind the | |
804 | scroll bar. This does not affect the scroll bar itself. */ | |
e88dcae1 | 805 | display_string (XWINDOW (mini_window), i, |
73f194f1 | 806 | "", 0, |
b8333774 | 807 | 0, 0, 0, |
a3788d53 RS |
808 | 0, FRAME_WIDTH (f) + FRAME_SCROLL_BAR_WIDTH (f), |
809 | 0); | |
daa37602 JB |
810 | } |
811 | } | |
a2889657 | 812 | } |
73af359d | 813 | else if (!EQ (mini_window, selected_window)) |
a2889657 JB |
814 | windows_or_buffers_changed++; |
815 | ||
73af359d | 816 | if (EQ (mini_window, selected_window)) |
a2889657 JB |
817 | this_line_bufpos = 0; |
818 | ||
819 | previous_echo_glyphs = echo_area_glyphs; | |
820 | } | |
1adc55de RS |
821 | \f |
822 | /* Update frame titles. */ | |
96a410bc | 823 | |
8f3343d0 | 824 | #ifdef HAVE_WINDOW_SYSTEM |
d39b6696 KH |
825 | static char frame_title_buf[512]; |
826 | static char *frame_title_ptr; | |
96a410bc | 827 | |
d39b6696 KH |
828 | static int |
829 | store_frame_title (str, mincol, maxcol) | |
830 | char *str; | |
831 | int mincol, maxcol; | |
832 | { | |
833 | char *limit; | |
834 | if (maxcol < 0 || maxcol >= sizeof(frame_title_buf)) | |
835 | maxcol = sizeof (frame_title_buf); | |
836 | limit = &frame_title_buf[maxcol]; | |
837 | while (*str != '\0' && frame_title_ptr < limit) | |
838 | *frame_title_ptr++ = *str++; | |
839 | while (frame_title_ptr < &frame_title_buf[mincol]) | |
840 | *frame_title_ptr++ = ' '; | |
841 | return frame_title_ptr - frame_title_buf; | |
842 | } | |
96a410bc | 843 | |
96a410bc KH |
844 | static void |
845 | x_consider_frame_title (frame) | |
846 | Lisp_Object frame; | |
847 | { | |
d39b6696 KH |
848 | Lisp_Object fmt; |
849 | struct buffer *obuf; | |
850 | int len; | |
96a410bc KH |
851 | FRAME_PTR f = XFRAME (frame); |
852 | ||
8f3343d0 | 853 | if (!(FRAME_WINDOW_P (f) || FRAME_MINIBUF_ONLY_P (f) || f->explicit_name)) |
d39b6696 | 854 | return; |
3450d04c KH |
855 | |
856 | /* Do we have more than one visible frame on this X display? */ | |
857 | { | |
858 | Lisp_Object tail; | |
859 | ||
860 | for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr) | |
861 | { | |
862 | FRAME_PTR tf = XFRAME (XCONS (tail)->car); | |
863 | ||
c9492f08 KH |
864 | if (tf != f && FRAME_KBOARD (tf) == FRAME_KBOARD (f) |
865 | && !FRAME_MINIBUF_ONLY_P (tf) | |
3450d04c KH |
866 | && (FRAME_VISIBLE_P (tf) || FRAME_ICONIFIED_P (tf))) |
867 | break; | |
868 | } | |
869 | ||
870 | multiple_frames = CONSP (tail); | |
871 | } | |
872 | ||
d39b6696 KH |
873 | obuf = current_buffer; |
874 | Fset_buffer (XWINDOW (f->selected_window)->buffer); | |
875 | fmt = (FRAME_ICONIFIED_P (f) ? Vicon_title_format : Vframe_title_format); | |
876 | frame_title_ptr = frame_title_buf; | |
877 | len = display_mode_element (XWINDOW (f->selected_window), 0, 0, 0, | |
878 | 0, sizeof (frame_title_buf), fmt); | |
879 | frame_title_ptr = 0; | |
880 | set_buffer_internal (obuf); | |
881 | /* Set the name only if it's changed. This avoids consing | |
882 | in the common case where it hasn't. (If it turns out that we've | |
883 | already wasted too much time by walking through the list with | |
884 | display_mode_element, then we might need to optimize at a higher | |
885 | level than this.) */ | |
fc932ac6 | 886 | if (! STRINGP (f->name) || STRING_BYTES (XSTRING (f->name)) != len |
d39b6696 KH |
887 | || bcmp (frame_title_buf, XSTRING (f->name)->data, len) != 0) |
888 | x_implicitly_set_name (f, make_string (frame_title_buf, len), Qnil); | |
96a410bc | 889 | } |
c7c9ca97 KH |
890 | #else |
891 | #define frame_title_ptr ((char *)0) | |
e39322d9 | 892 | #define store_frame_title(str, mincol, maxcol) 0 |
96a410bc | 893 | #endif |
a2889657 | 894 | \f |
90adcf20 | 895 | /* Prepare for redisplay by updating menu-bar item lists when appropriate. |
87382820 | 896 | This can call eval. */ |
90adcf20 RS |
897 | |
898 | void | |
899 | prepare_menu_bars () | |
900 | { | |
901 | register struct window *w = XWINDOW (selected_window); | |
902 | int all_windows; | |
08b610e4 | 903 | struct gcpro gcpro1, gcpro2; |
90adcf20 | 904 | |
ecf7de9b | 905 | all_windows = (update_mode_lines || buffer_shared > 1 |
28995e67 | 906 | || windows_or_buffers_changed); |
90adcf20 | 907 | |
feb0c42f KH |
908 | /* Update all frame titles based on their buffer names, etc. |
909 | We do this before the menu bars so that the buffer-menu | |
910 | will show the up-to-date frame titles. | |
911 | ||
912 | This used to be done after the menu bars, for a reason that | |
913 | was stated as follows but which I do not understand: | |
914 | "We do this after the menu bars so that the frame will first | |
915 | create its menu bar using the name `emacs' if no other name | |
916 | has yet been specified." | |
917 | I think that is no longer a concern. */ | |
8f3343d0 | 918 | #ifdef HAVE_WINDOW_SYSTEM |
d3f46cff | 919 | if (windows_or_buffers_changed || update_mode_lines) |
feb0c42f KH |
920 | { |
921 | Lisp_Object tail, frame; | |
922 | ||
923 | FOR_EACH_FRAME (tail, frame) | |
924 | if (FRAME_VISIBLE_P (XFRAME (frame)) | |
925 | || FRAME_ICONIFIED_P (XFRAME (frame))) | |
926 | x_consider_frame_title (frame); | |
927 | } | |
928 | #endif | |
929 | ||
90adcf20 RS |
930 | /* Update the menu bar item lists, if appropriate. |
931 | This has to be done before any actual redisplay | |
932 | or generation of display lines. */ | |
933 | if (all_windows) | |
934 | { | |
935 | Lisp_Object tail, frame; | |
a2725ab2 RS |
936 | int count = specpdl_ptr - specpdl; |
937 | ||
84dd0ae5 | 938 | record_unwind_protect (Fset_match_data, Fmatch_data (Qnil, Qnil)); |
90adcf20 RS |
939 | |
940 | FOR_EACH_FRAME (tail, frame) | |
08b610e4 RS |
941 | { |
942 | /* If a window on this frame changed size, | |
943 | report that to the user and clear the size-change flag. */ | |
944 | if (FRAME_WINDOW_SIZES_CHANGED (XFRAME (frame))) | |
945 | { | |
946 | Lisp_Object functions; | |
14510fee RS |
947 | /* Clear flag first in case we get error below. */ |
948 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (frame)) = 0; | |
08b610e4 RS |
949 | functions = Vwindow_size_change_functions; |
950 | GCPRO2 (tail, functions); | |
951 | while (CONSP (functions)) | |
952 | { | |
953 | call1 (XCONS (functions)->car, frame); | |
954 | functions = XCONS (functions)->cdr; | |
955 | } | |
956 | UNGCPRO; | |
08b610e4 RS |
957 | } |
958 | GCPRO1 (tail); | |
a2725ab2 | 959 | update_menu_bar (XFRAME (frame), 0); |
08b610e4 RS |
960 | UNGCPRO; |
961 | } | |
a2725ab2 RS |
962 | |
963 | unbind_to (count, Qnil); | |
90adcf20 | 964 | } |
ecf7de9b | 965 | else |
a2725ab2 | 966 | update_menu_bar (selected_frame, 1); |
cd6dfed6 RS |
967 | |
968 | /* Motif needs this. See comment in xmenu.c. | |
969 | Turn it off when pending_menu_activation is not defined. */ | |
970 | #ifdef USE_X_TOOLKIT | |
971 | pending_menu_activation = 0; | |
972 | #endif | |
90adcf20 RS |
973 | } |
974 | \f | |
44fa5b1e | 975 | /* Do a frame update, taking possible shortcuts into account. |
a2889657 JB |
976 | This is the main external entry point for redisplay. |
977 | ||
978 | If the last redisplay displayed an echo area message and that | |
979 | message is no longer requested, we clear the echo area | |
980 | or bring back the minibuffer if that is in use. | |
981 | ||
90adcf20 RS |
982 | Do not call eval from within this function. |
983 | Calls to eval after the call to echo_area_display would confuse | |
984 | the display_line mechanism and would cause a crash. | |
985 | Calls to eval before that point will work most of the time, | |
986 | but can still lose, because this function | |
987 | can be called from signal handlers; with alarms set up; | |
a2889657 | 988 | or with synchronous processes running. |
90adcf20 | 989 | |
a2889657 JB |
990 | See Fcall_process; if you called it from here, it could be |
991 | entered recursively. */ | |
992 | ||
0d231165 RS |
993 | static int do_verify_charstarts; |
994 | ||
463f6b91 RS |
995 | /* Counter is used to clear the face cache |
996 | no more than once ever 1000 redisplays. */ | |
997 | static int clear_face_cache_count; | |
998 | ||
20de20dc RS |
999 | /* Record the previous terminal frame we displayed. */ |
1000 | static FRAME_PTR previous_terminal_frame; | |
1001 | ||
a2889657 JB |
1002 | void |
1003 | redisplay () | |
e9874cee RS |
1004 | { |
1005 | redisplay_internal (0); | |
1006 | } | |
1007 | ||
1008 | /* If PRESERVE_ECHO_AREA is nonzero, it means this redisplay | |
1009 | is not in response to any user action; therefore, we should | |
94a66eea RS |
1010 | preserve the echo area. (Actually, our caller does that job.) |
1011 | Perhaps in the future avoid recentering windows | |
e9874cee RS |
1012 | if it is not necessary; currently that causes some problems. */ |
1013 | ||
1014 | static void | |
1015 | redisplay_internal (preserve_echo_area) | |
1016 | int preserve_echo_area; | |
a2889657 JB |
1017 | { |
1018 | register struct window *w = XWINDOW (selected_window); | |
1019 | register int pause; | |
1020 | int must_finish = 0; | |
1021 | int all_windows; | |
1022 | register int tlbufpos, tlendpos; | |
1023 | struct position pos; | |
89819bdd | 1024 | int number_of_visible_frames; |
a2889657 JB |
1025 | |
1026 | if (noninteractive) | |
1027 | return; | |
1028 | ||
15f0cf78 RS |
1029 | #ifdef USE_X_TOOLKIT |
1030 | if (popup_activated ()) | |
1031 | return; | |
1032 | #endif | |
1033 | ||
8b32d885 RS |
1034 | retry: |
1035 | ||
fd8ff63d | 1036 | if (! FRAME_WINDOW_P (selected_frame) |
20de20dc RS |
1037 | && previous_terminal_frame != selected_frame) |
1038 | { | |
1039 | /* Since frames on an ASCII terminal share the same display area, | |
1040 | displaying a different frame means redisplay the whole thing. */ | |
1041 | windows_or_buffers_changed++; | |
1042 | SET_FRAME_GARBAGED (selected_frame); | |
1043 | XSETFRAME (Vterminal_frame, selected_frame); | |
1044 | } | |
1045 | previous_terminal_frame = selected_frame; | |
20de20dc | 1046 | |
d724d989 JB |
1047 | /* Set the visible flags for all frames. |
1048 | Do this before checking for resized or garbaged frames; they want | |
1049 | to know if their frames are visible. | |
1050 | See the comment in frame.h for FRAME_SAMPLE_VISIBILITY. */ | |
1051 | { | |
35f56f96 | 1052 | Lisp_Object tail, frame; |
d724d989 | 1053 | |
89819bdd RS |
1054 | number_of_visible_frames = 0; |
1055 | ||
35f56f96 | 1056 | FOR_EACH_FRAME (tail, frame) |
f82aff7c RS |
1057 | { |
1058 | FRAME_SAMPLE_VISIBILITY (XFRAME (frame)); | |
1059 | ||
8e83f802 RS |
1060 | if (FRAME_VISIBLE_P (XFRAME (frame))) |
1061 | number_of_visible_frames++; | |
89819bdd | 1062 | |
f82aff7c RS |
1063 | /* Clear out all the display lines in which we will generate the |
1064 | glyphs to display. */ | |
1065 | init_desired_glyphs (XFRAME (frame)); | |
1066 | } | |
d724d989 JB |
1067 | } |
1068 | ||
44fa5b1e | 1069 | /* Notice any pending interrupt request to change frame size. */ |
a2889657 JB |
1070 | do_pending_window_change (); |
1071 | ||
44fa5b1e | 1072 | if (frame_garbaged) |
a2889657 | 1073 | { |
02a9b6e4 | 1074 | redraw_garbaged_frames (); |
44fa5b1e | 1075 | frame_garbaged = 0; |
a2889657 JB |
1076 | } |
1077 | ||
f82aff7c RS |
1078 | prepare_menu_bars (); |
1079 | ||
28995e67 | 1080 | if (windows_or_buffers_changed) |
a2889657 JB |
1081 | update_mode_lines++; |
1082 | ||
538f13d4 RS |
1083 | /* Detect case that we need to write or remove a star in the mode line. */ |
1084 | if ((SAVE_MODIFF < MODIFF) != !NILP (w->last_had_star)) | |
a2889657 JB |
1085 | { |
1086 | w->update_mode_line = Qt; | |
1087 | if (buffer_shared > 1) | |
1088 | update_mode_lines++; | |
1089 | } | |
1090 | ||
28995e67 RS |
1091 | /* If %c is in use, update it if needed. */ |
1092 | if (!NILP (w->column_number_displayed) | |
1093 | /* This alternative quickly identifies a common case | |
1094 | where no change is needed. */ | |
1095 | && !(PT == XFASTINT (w->last_point) | |
8850a573 RS |
1096 | && XFASTINT (w->last_modified) >= MODIFF |
1097 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF) | |
28995e67 RS |
1098 | && XFASTINT (w->column_number_displayed) != current_column ()) |
1099 | w->update_mode_line = Qt; | |
1100 | ||
44fa5b1e | 1101 | FRAME_SCROLL_BOTTOM_VPOS (XFRAME (w->frame)) = -1; |
a2889657 JB |
1102 | |
1103 | all_windows = update_mode_lines || buffer_shared > 1; | |
a2889657 JB |
1104 | |
1105 | /* If specs for an arrow have changed, do thorough redisplay | |
1106 | to ensure we remove any arrow that should no longer exist. */ | |
d45de95b | 1107 | if (! EQ (COERCE_MARKER (Voverlay_arrow_position), last_arrow_position) |
ded34426 | 1108 | || ! EQ (Voverlay_arrow_string, last_arrow_string)) |
28995e67 | 1109 | all_windows = 1; |
a2889657 | 1110 | |
90adcf20 RS |
1111 | /* Normally the message* functions will have already displayed and |
1112 | updated the echo area, but the frame may have been trashed, or | |
1113 | the update may have been preempted, so display the echo area | |
1114 | again here. */ | |
1115 | if (echo_area_glyphs || previous_echo_glyphs) | |
1116 | { | |
1117 | echo_area_display (); | |
1118 | must_finish = 1; | |
1119 | } | |
1120 | ||
bd66d1ba RS |
1121 | /* If showing region, and mark has changed, must redisplay whole window. */ |
1122 | if (((!NILP (Vtransient_mark_mode) | |
1123 | && !NILP (XBUFFER (w->buffer)->mark_active)) | |
1124 | != !NILP (w->region_showing)) | |
82d04750 JB |
1125 | || (!NILP (w->region_showing) |
1126 | && !EQ (w->region_showing, | |
1127 | Fmarker_position (XBUFFER (w->buffer)->mark)))) | |
bd66d1ba RS |
1128 | this_line_bufpos = -1; |
1129 | ||
a2889657 JB |
1130 | tlbufpos = this_line_bufpos; |
1131 | tlendpos = this_line_endpos; | |
265a9e55 | 1132 | if (!all_windows && tlbufpos > 0 && NILP (w->update_mode_line) |
73af359d | 1133 | && !current_buffer->clip_changed |
44fa5b1e | 1134 | && FRAME_VISIBLE_P (XFRAME (w->frame)) |
f21ef775 | 1135 | && !FRAME_OBSCURED_P (XFRAME (w->frame)) |
a2889657 JB |
1136 | /* Make sure recorded data applies to current buffer, etc */ |
1137 | && this_line_buffer == current_buffer | |
1138 | && current_buffer == XBUFFER (w->buffer) | |
265a9e55 | 1139 | && NILP (w->force_start) |
a2889657 | 1140 | /* Point must be on the line that we have info recorded about */ |
ae3b1442 KH |
1141 | && PT >= tlbufpos |
1142 | && PT <= Z - tlendpos | |
a2889657 JB |
1143 | /* All text outside that line, including its final newline, |
1144 | must be unchanged */ | |
8850a573 RS |
1145 | && ((XFASTINT (w->last_modified) >= MODIFF |
1146 | && (XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF)) | |
a2889657 JB |
1147 | || (beg_unchanged >= tlbufpos - 1 |
1148 | && GPT >= tlbufpos | |
05ba02eb JB |
1149 | /* If selective display, can't optimize |
1150 | if the changes start at the beginning of the line. */ | |
e24c997d | 1151 | && ((INTEGERP (current_buffer->selective_display) |
05ba02eb JB |
1152 | && XINT (current_buffer->selective_display) > 0 |
1153 | ? (beg_unchanged >= tlbufpos | |
1154 | && GPT > tlbufpos) | |
1155 | : 1)) | |
a2889657 JB |
1156 | && end_unchanged >= tlendpos |
1157 | && Z - GPT >= tlendpos))) | |
1158 | { | |
12adba34 RS |
1159 | int tlbufpos_byte = CHAR_TO_BYTE (tlbufpos); |
1160 | if (tlbufpos > BEGV && FETCH_BYTE (tlbufpos_byte - 1) != '\n' | |
a2889657 | 1161 | && (tlbufpos == ZV |
12adba34 | 1162 | || FETCH_BYTE (tlbufpos_byte) == '\n')) |
a2889657 JB |
1163 | /* Former continuation line has disappeared by becoming empty */ |
1164 | goto cancel; | |
1165 | else if (XFASTINT (w->last_modified) < MODIFF | |
8850a573 | 1166 | || XFASTINT (w->last_overlay_modified) < OVERLAY_MODIFF |
a2889657 JB |
1167 | || MINI_WINDOW_P (w)) |
1168 | { | |
1c9241f5 KH |
1169 | /* We have to handle the case of continuation around a |
1170 | wide-column character (See the comment in indent.c around | |
1171 | line 885). | |
1172 | ||
1173 | For instance, in the following case: | |
1174 | ||
1175 | -------- Insert -------- | |
1176 | K_A_N_\\ `a' K_A_N_a\ `X_' are wide-column chars. | |
1177 | J_I_ ==> J_I_ `^^' are cursors. | |
1178 | ^^ ^^ | |
1179 | -------- -------- | |
1180 | ||
1181 | As we have to redraw the line above, we should goto cancel. */ | |
1182 | ||
1183 | struct position val; | |
1184 | int prevline; | |
12adba34 | 1185 | int opoint = PT, opoint_byte = PT_BYTE; |
1c9241f5 | 1186 | |
12adba34 RS |
1187 | scan_newline (tlbufpos, tlbufpos_byte, BEGV, BEGV_BYTE, -1, 1); |
1188 | ||
1189 | val = *compute_motion (PT, 0, | |
1c9241f5 KH |
1190 | XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0, |
1191 | 0, | |
1192 | tlbufpos, | |
1193 | 1 << (BITS_PER_SHORT - 1), | |
1194 | 1 << (BITS_PER_SHORT - 1), | |
1195 | window_internal_width (w) - 1, | |
1196 | XINT (w->hscroll), 0, w); | |
12adba34 | 1197 | SET_PT_BOTH (opoint, opoint_byte); |
1c9241f5 KH |
1198 | if (val.hpos != this_line_start_hpos) |
1199 | goto cancel; | |
1200 | ||
a2889657 JB |
1201 | cursor_vpos = -1; |
1202 | overlay_arrow_seen = 0; | |
ca26e1c8 | 1203 | zv_strings_seen = 0; |
12adba34 RS |
1204 | display_text_line (w, tlbufpos, tlbufpos_byte, |
1205 | this_line_vpos, this_line_start_hpos, | |
1206 | pos_tab_offset (w, tlbufpos, tlbufpos_byte), 0); | |
a2889657 JB |
1207 | /* If line contains point, is not continued, |
1208 | and ends at same distance from eob as before, we win */ | |
1209 | if (cursor_vpos >= 0 && this_line_bufpos | |
1210 | && this_line_endpos == tlendpos) | |
1211 | { | |
0d231165 RS |
1212 | /* If this is not the window's last line, |
1213 | we must adjust the charstarts of the lines below. */ | |
1214 | if (this_line_vpos + 1 | |
1215 | < XFASTINT (w->top) + window_internal_height (w)) | |
85bcef6c | 1216 | { |
73f194f1 | 1217 | int left = WINDOW_LEFT_MARGIN (w); |
85bcef6c RS |
1218 | int *charstart_next_line |
1219 | = FRAME_CURRENT_GLYPHS (XFRAME (WINDOW_FRAME (w)))->charstarts[this_line_vpos + 1]; | |
85bcef6c RS |
1220 | int adjust; |
1221 | ||
1222 | if (Z - tlendpos == ZV) | |
1223 | /* This line ends at end of (accessible part of) buffer. | |
1224 | There is no newline to count. */ | |
1225 | adjust = Z - tlendpos - charstart_next_line[left]; | |
1226 | else | |
1227 | /* This line ends in a newline. | |
1228 | Must take account of the newline and the rest of the | |
1229 | text that follows. */ | |
1230 | adjust = Z - tlendpos + 1 - charstart_next_line[left]; | |
1231 | ||
1232 | adjust_window_charstarts (w, this_line_vpos, adjust); | |
1233 | } | |
46db8486 | 1234 | |
73f194f1 | 1235 | if (!WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1236 | preserve_other_columns (w); |
1237 | goto update; | |
1238 | } | |
1239 | else | |
1240 | goto cancel; | |
1241 | } | |
b6f0fe04 RS |
1242 | else if (PT == XFASTINT (w->last_point) |
1243 | /* Make sure the cursor was last displayed | |
1244 | in this window. Otherwise we have to reposition it. */ | |
1245 | && XINT (w->top) <= FRAME_CURSOR_Y (selected_frame) | |
1246 | && (XINT (w->top) + XINT (w->height) | |
1247 | > FRAME_CURSOR_Y (selected_frame))) | |
a2889657 JB |
1248 | { |
1249 | if (!must_finish) | |
1250 | { | |
1251 | do_pending_window_change (); | |
1252 | return; | |
1253 | } | |
1254 | goto update; | |
1255 | } | |
8b51f1e3 KH |
1256 | /* If highlighting the region, or if the cursor is in the echo area, |
1257 | then we can't just move the cursor. */ | |
bd66d1ba RS |
1258 | else if (! (!NILP (Vtransient_mark_mode) |
1259 | && !NILP (current_buffer->mark_active)) | |
293a54ce RS |
1260 | && (w == XWINDOW (current_buffer->last_selected_window) |
1261 | || highlight_nonselected_windows) | |
8b51f1e3 KH |
1262 | && NILP (w->region_showing) |
1263 | && !cursor_in_echo_area) | |
a2889657 JB |
1264 | { |
1265 | pos = *compute_motion (tlbufpos, 0, | |
1266 | XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0, | |
ca26e1c8 | 1267 | 0, |
68be917d | 1268 | PT, 2, - (1 << (BITS_PER_SHORT - 1)), |
b1d1124b | 1269 | window_internal_width (w) - 1, |
de3e8b15 | 1270 | XINT (w->hscroll), |
12adba34 RS |
1271 | pos_tab_offset (w, tlbufpos, tlbufpos_byte), |
1272 | w); | |
a2889657 JB |
1273 | if (pos.vpos < 1) |
1274 | { | |
210e752f | 1275 | int width = window_internal_width (w) - 1; |
44fa5b1e | 1276 | FRAME_CURSOR_X (selected_frame) |
73f194f1 | 1277 | = WINDOW_LEFT_MARGIN (w) + minmax (0, pos.hpos, width); |
44fa5b1e | 1278 | FRAME_CURSOR_Y (selected_frame) = this_line_vpos; |
a2889657 JB |
1279 | goto update; |
1280 | } | |
1281 | else | |
1282 | goto cancel; | |
1283 | } | |
1284 | cancel: | |
1285 | /* Text changed drastically or point moved off of line */ | |
44fa5b1e | 1286 | cancel_line (this_line_vpos, selected_frame); |
a2889657 JB |
1287 | } |
1288 | ||
1289 | this_line_bufpos = 0; | |
1290 | all_windows |= buffer_shared > 1; | |
1291 | ||
463f6b91 RS |
1292 | clear_face_cache_count++; |
1293 | ||
a2889657 JB |
1294 | if (all_windows) |
1295 | { | |
35f56f96 | 1296 | Lisp_Object tail, frame; |
a2889657 | 1297 | |
87485d6f | 1298 | #ifdef HAVE_FACES |
463f6b91 RS |
1299 | /* Clear the face cache, only when we do a full redisplay |
1300 | and not too often either. */ | |
1301 | if (clear_face_cache_count > 1000) | |
1302 | { | |
1303 | clear_face_cache (); | |
1304 | clear_face_cache_count = 0; | |
1305 | } | |
31b24551 JB |
1306 | #endif |
1307 | ||
a2889657 | 1308 | /* Recompute # windows showing selected buffer. |
8de2d90b | 1309 | This will be incremented each time such a window is displayed. */ |
a2889657 JB |
1310 | buffer_shared = 0; |
1311 | ||
35f56f96 | 1312 | FOR_EACH_FRAME (tail, frame) |
30c566e4 | 1313 | { |
35f56f96 | 1314 | FRAME_PTR f = XFRAME (frame); |
fd8ff63d | 1315 | if (FRAME_WINDOW_P (f) || f == selected_frame) |
9769686d | 1316 | { |
35f56f96 | 1317 | |
9769686d RS |
1318 | /* Mark all the scroll bars to be removed; we'll redeem the ones |
1319 | we want when we redisplay their windows. */ | |
1320 | if (condemn_scroll_bars_hook) | |
1321 | (*condemn_scroll_bars_hook) (f); | |
30c566e4 | 1322 | |
f21ef775 | 1323 | if (FRAME_VISIBLE_P (f) && !FRAME_OBSCURED_P (f)) |
89819bdd | 1324 | redisplay_windows (FRAME_ROOT_WINDOW (f), preserve_echo_area); |
30c566e4 | 1325 | |
9769686d RS |
1326 | /* Any scroll bars which redisplay_windows should have nuked |
1327 | should now go away. */ | |
1328 | if (judge_scroll_bars_hook) | |
1329 | (*judge_scroll_bars_hook) (f); | |
1330 | } | |
30c566e4 | 1331 | } |
a2889657 | 1332 | } |
f21ef775 | 1333 | else if (FRAME_VISIBLE_P (selected_frame) && !FRAME_OBSCURED_P (selected_frame)) |
a2889657 | 1334 | { |
e9874cee | 1335 | redisplay_window (selected_window, 1, preserve_echo_area); |
73f194f1 | 1336 | if (!WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1337 | preserve_other_columns (w); |
1338 | } | |
1339 | ||
1340 | update: | |
1341 | /* Prevent various kinds of signals during display update. | |
1342 | stdio is not robust about handling signals, | |
1343 | which can cause an apparent I/O error. */ | |
1344 | if (interrupt_input) | |
1345 | unrequest_sigio (); | |
1346 | stop_polling (); | |
1347 | ||
a2889657 JB |
1348 | if (all_windows) |
1349 | { | |
1350 | Lisp_Object tail; | |
1351 | ||
1352 | pause = 0; | |
1353 | ||
44fa5b1e | 1354 | for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr) |
a2889657 | 1355 | { |
44fa5b1e | 1356 | FRAME_PTR f; |
a2889657 | 1357 | |
e24c997d | 1358 | if (!FRAMEP (XCONS (tail)->car)) |
a2889657 JB |
1359 | continue; |
1360 | ||
44fa5b1e | 1361 | f = XFRAME (XCONS (tail)->car); |
1af9f229 | 1362 | |
fd8ff63d | 1363 | if ((FRAME_WINDOW_P (f) || f == selected_frame) |
f21ef775 | 1364 | && FRAME_VISIBLE_P (f) && !FRAME_OBSCURED_P (f)) |
a2889657 | 1365 | { |
44fa5b1e | 1366 | pause |= update_frame (f, 0, 0); |
a2889657 | 1367 | if (!pause) |
efc63ef0 RS |
1368 | { |
1369 | mark_window_display_accurate (f->root_window, 1); | |
1370 | if (frame_up_to_date_hook != 0) | |
1371 | (*frame_up_to_date_hook) (f); | |
1372 | } | |
a2889657 JB |
1373 | } |
1374 | } | |
1375 | } | |
1376 | else | |
6e8290aa | 1377 | { |
f21ef775 | 1378 | if (FRAME_VISIBLE_P (selected_frame) && !FRAME_OBSCURED_P (selected_frame)) |
44fa5b1e | 1379 | pause = update_frame (selected_frame, 0, 0); |
4d641a15 KH |
1380 | else |
1381 | pause = 0; | |
d724d989 | 1382 | |
8de2d90b | 1383 | /* We may have called echo_area_display at the top of this |
44fa5b1e JB |
1384 | function. If the echo area is on another frame, that may |
1385 | have put text on a frame other than the selected one, so the | |
1386 | above call to update_frame would not have caught it. Catch | |
8de2d90b JB |
1387 | it here. */ |
1388 | { | |
84faf44c RS |
1389 | Lisp_Object mini_window; |
1390 | FRAME_PTR mini_frame; | |
1391 | ||
1392 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
1393 | mini_frame = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
8de2d90b | 1394 | |
fd8ff63d | 1395 | if (mini_frame != selected_frame && FRAME_WINDOW_P (mini_frame)) |
44fa5b1e | 1396 | pause |= update_frame (mini_frame, 0, 0); |
8de2d90b | 1397 | } |
6e8290aa | 1398 | } |
a2889657 | 1399 | |
44fa5b1e | 1400 | /* If frame does not match, prevent doing single-line-update next time. |
a2889657 JB |
1401 | Also, don't forget to check every line to update the arrow. */ |
1402 | if (pause) | |
1403 | { | |
1404 | this_line_bufpos = 0; | |
265a9e55 | 1405 | if (!NILP (last_arrow_position)) |
a2889657 JB |
1406 | { |
1407 | last_arrow_position = Qt; | |
1408 | last_arrow_string = Qt; | |
1409 | } | |
44fa5b1e | 1410 | /* If we pause after scrolling, some lines in current_frame |
a2889657 JB |
1411 | may be null, so preserve_other_columns won't be able to |
1412 | preserve all the vertical-bar separators. So, avoid using it | |
1413 | in that case. */ | |
73f194f1 | 1414 | if (!WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1415 | update_mode_lines = 1; |
1416 | } | |
1417 | ||
44fa5b1e | 1418 | /* Now text on frame agrees with windows, so |
a2889657 JB |
1419 | put info into the windows for partial redisplay to follow */ |
1420 | ||
1421 | if (!pause) | |
1422 | { | |
1423 | register struct buffer *b = XBUFFER (w->buffer); | |
1424 | ||
1425 | blank_end_of_window = 0; | |
a2889657 | 1426 | unchanged_modified = BUF_MODIFF (b); |
8850a573 | 1427 | overlay_unchanged_modified = BUF_OVERLAY_MODIFF (b); |
a2889657 JB |
1428 | beg_unchanged = BUF_GPT (b) - BUF_BEG (b); |
1429 | end_unchanged = BUF_Z (b) - BUF_GPT (b); | |
1430 | ||
c2213350 KH |
1431 | XSETFASTINT (w->last_point, BUF_PT (b)); |
1432 | XSETFASTINT (w->last_point_x, FRAME_CURSOR_X (selected_frame)); | |
1433 | XSETFASTINT (w->last_point_y, FRAME_CURSOR_Y (selected_frame)); | |
a2889657 JB |
1434 | |
1435 | if (all_windows) | |
11e82b76 | 1436 | mark_window_display_accurate (FRAME_ROOT_WINDOW (selected_frame), 1); |
a2889657 JB |
1437 | else |
1438 | { | |
28995e67 | 1439 | b->clip_changed = 0; |
a2889657 | 1440 | w->update_mode_line = Qnil; |
c2213350 | 1441 | XSETFASTINT (w->last_modified, BUF_MODIFF (b)); |
8850a573 | 1442 | XSETFASTINT (w->last_overlay_modified, BUF_OVERLAY_MODIFF (b)); |
538f13d4 RS |
1443 | w->last_had_star |
1444 | = (BUF_MODIFF (XBUFFER (w->buffer)) > BUF_SAVE_MODIFF (XBUFFER (w->buffer)) | |
1445 | ? Qt : Qnil); | |
3ee4159a RS |
1446 | |
1447 | /* Record if we are showing a region, so can make sure to | |
1448 | update it fully at next redisplay. */ | |
1449 | w->region_showing = (!NILP (Vtransient_mark_mode) | |
293a54ce RS |
1450 | && (w == XWINDOW (current_buffer->last_selected_window) |
1451 | || highlight_nonselected_windows) | |
3ee4159a RS |
1452 | && !NILP (XBUFFER (w->buffer)->mark_active) |
1453 | ? Fmarker_position (XBUFFER (w->buffer)->mark) | |
1454 | : Qnil); | |
1455 | ||
d2f84654 | 1456 | w->window_end_valid = w->buffer; |
d45de95b | 1457 | last_arrow_position = COERCE_MARKER (Voverlay_arrow_position); |
a2889657 | 1458 | last_arrow_string = Voverlay_arrow_string; |
0d231165 RS |
1459 | if (do_verify_charstarts) |
1460 | verify_charstarts (w); | |
efc63ef0 RS |
1461 | if (frame_up_to_date_hook != 0) |
1462 | (*frame_up_to_date_hook) (selected_frame); | |
a2889657 JB |
1463 | } |
1464 | update_mode_lines = 0; | |
1465 | windows_or_buffers_changed = 0; | |
1466 | } | |
1467 | ||
1468 | /* Start SIGIO interrupts coming again. | |
1469 | Having them off during the code above | |
1470 | makes it less likely one will discard output, | |
1471 | but not impossible, since there might be stuff | |
1472 | in the system buffer here. | |
1473 | But it is much hairier to try to do anything about that. */ | |
1474 | ||
1475 | if (interrupt_input) | |
1476 | request_sigio (); | |
1477 | start_polling (); | |
1478 | ||
11c52c4f RS |
1479 | /* If something has become visible now which was not before, |
1480 | redisplay again, so that we get them. */ | |
1481 | if (!pause) | |
1482 | { | |
1483 | Lisp_Object tail, frame; | |
1484 | int new_count = 0; | |
1485 | ||
1486 | FOR_EACH_FRAME (tail, frame) | |
1487 | { | |
1488 | int this_is_visible = 0; | |
8e83f802 RS |
1489 | |
1490 | if (XFRAME (frame)->visible) | |
1491 | this_is_visible = 1; | |
1492 | FRAME_SAMPLE_VISIBILITY (XFRAME (frame)); | |
1493 | if (XFRAME (frame)->visible) | |
1494 | this_is_visible = 1; | |
11c52c4f RS |
1495 | |
1496 | if (this_is_visible) | |
1497 | new_count++; | |
1498 | } | |
1499 | ||
89819bdd | 1500 | if (new_count != number_of_visible_frames) |
11c52c4f RS |
1501 | windows_or_buffers_changed++; |
1502 | } | |
1503 | ||
44fa5b1e | 1504 | /* Change frame size now if a change is pending. */ |
a2889657 | 1505 | do_pending_window_change (); |
d8e242fd | 1506 | |
8b32d885 RS |
1507 | /* If we just did a pending size change, or have additional |
1508 | visible frames, redisplay again. */ | |
3c8c72e0 | 1509 | if (windows_or_buffers_changed && !pause) |
8b32d885 | 1510 | goto retry; |
a2889657 JB |
1511 | } |
1512 | ||
1513 | /* Redisplay, but leave alone any recent echo area message | |
1514 | unless another message has been requested in its place. | |
1515 | ||
1516 | This is useful in situations where you need to redisplay but no | |
1517 | user action has occurred, making it inappropriate for the message | |
1518 | area to be cleared. See tracking_off and | |
1519 | wait_reading_process_input for examples of these situations. */ | |
1520 | ||
8991bb31 | 1521 | void |
a2889657 JB |
1522 | redisplay_preserve_echo_area () |
1523 | { | |
1524 | if (echo_area_glyphs == 0 && previous_echo_glyphs != 0) | |
1525 | { | |
1526 | echo_area_glyphs = previous_echo_glyphs; | |
e9874cee | 1527 | redisplay_internal (1); |
a2889657 JB |
1528 | echo_area_glyphs = 0; |
1529 | } | |
1530 | else | |
e9874cee | 1531 | redisplay_internal (1); |
a2889657 JB |
1532 | } |
1533 | ||
1534 | void | |
1535 | mark_window_display_accurate (window, flag) | |
1536 | Lisp_Object window; | |
1537 | int flag; | |
1538 | { | |
1539 | register struct window *w; | |
1540 | ||
265a9e55 | 1541 | for (;!NILP (window); window = w->next) |
a2889657 | 1542 | { |
e24c997d | 1543 | if (!WINDOWP (window)) abort (); |
a2889657 JB |
1544 | w = XWINDOW (window); |
1545 | ||
265a9e55 | 1546 | if (!NILP (w->buffer)) |
bd66d1ba | 1547 | { |
c2213350 KH |
1548 | XSETFASTINT (w->last_modified, |
1549 | !flag ? 0 : BUF_MODIFF (XBUFFER (w->buffer))); | |
8850a573 RS |
1550 | XSETFASTINT (w->last_overlay_modified, |
1551 | !flag ? 0 : BUF_OVERLAY_MODIFF (XBUFFER (w->buffer))); | |
538f13d4 RS |
1552 | w->last_had_star |
1553 | = (BUF_MODIFF (XBUFFER (w->buffer)) > BUF_SAVE_MODIFF (XBUFFER (w->buffer)) | |
1554 | ? Qt : Qnil); | |
bd66d1ba RS |
1555 | |
1556 | /* Record if we are showing a region, so can make sure to | |
1557 | update it fully at next redisplay. */ | |
1558 | w->region_showing = (!NILP (Vtransient_mark_mode) | |
293a54ce RS |
1559 | && (w == XWINDOW (current_buffer->last_selected_window) |
1560 | || highlight_nonselected_windows) | |
bd66d1ba RS |
1561 | && !NILP (XBUFFER (w->buffer)->mark_active) |
1562 | ? Fmarker_position (XBUFFER (w->buffer)->mark) | |
1563 | : Qnil); | |
1564 | } | |
1565 | ||
d2f84654 | 1566 | w->window_end_valid = w->buffer; |
a2889657 | 1567 | w->update_mode_line = Qnil; |
051e7076 | 1568 | if (!NILP (w->buffer) && flag) |
28995e67 | 1569 | XBUFFER (w->buffer)->clip_changed = 0; |
a2889657 | 1570 | |
265a9e55 | 1571 | if (!NILP (w->vchild)) |
a2889657 | 1572 | mark_window_display_accurate (w->vchild, flag); |
265a9e55 | 1573 | if (!NILP (w->hchild)) |
a2889657 JB |
1574 | mark_window_display_accurate (w->hchild, flag); |
1575 | } | |
1576 | ||
1577 | if (flag) | |
1578 | { | |
d45de95b | 1579 | last_arrow_position = COERCE_MARKER (Voverlay_arrow_position); |
a2889657 JB |
1580 | last_arrow_string = Voverlay_arrow_string; |
1581 | } | |
1582 | else | |
1583 | { | |
1584 | /* t is unequal to any useful value of Voverlay_arrow_... */ | |
1585 | last_arrow_position = Qt; | |
1586 | last_arrow_string = Qt; | |
1587 | } | |
1588 | } | |
1589 | \f | |
ecf7de9b | 1590 | /* Update the menu bar item list for frame F. |
90adcf20 | 1591 | This has to be done before we start to fill in any display lines, |
a2725ab2 RS |
1592 | because it can call eval. |
1593 | ||
1594 | If SAVE_MATCH_DATA is 1, we must save and restore it here. */ | |
90adcf20 RS |
1595 | |
1596 | static void | |
a2725ab2 | 1597 | update_menu_bar (f, save_match_data) |
ecf7de9b | 1598 | FRAME_PTR f; |
a2725ab2 | 1599 | int save_match_data; |
90adcf20 | 1600 | { |
90adcf20 | 1601 | struct buffer *old = current_buffer; |
ecf7de9b RS |
1602 | Lisp_Object window; |
1603 | register struct window *w; | |
a2725ab2 | 1604 | |
ecf7de9b RS |
1605 | window = FRAME_SELECTED_WINDOW (f); |
1606 | w = XWINDOW (window); | |
90adcf20 RS |
1607 | |
1608 | if (update_mode_lines) | |
1609 | w->update_mode_line = Qt; | |
1610 | ||
d1e74921 | 1611 | if (FRAME_WINDOW_P (f) |
d3413a53 | 1612 | ? |
dc937613 | 1613 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
cf074754 | 1614 | FRAME_EXTERNAL_MENU_BAR (f) |
78614721 | 1615 | #else |
cf074754 | 1616 | FRAME_MENU_BAR_LINES (f) > 0 |
78614721 | 1617 | #endif |
d3413a53 | 1618 | : FRAME_MENU_BAR_LINES (f) > 0) |
90adcf20 RS |
1619 | { |
1620 | /* If the user has switched buffers or windows, we need to | |
1621 | recompute to reflect the new bindings. But we'll | |
1622 | recompute when update_mode_lines is set too; that means | |
1623 | that people can use force-mode-line-update to request | |
1624 | that the menu bar be recomputed. The adverse effect on | |
1625 | the rest of the redisplay algorithm is about the same as | |
1626 | windows_or_buffers_changed anyway. */ | |
1627 | if (windows_or_buffers_changed | |
cf074754 | 1628 | || !NILP (w->update_mode_line) |
538f13d4 RS |
1629 | || ((BUF_SAVE_MODIFF (XBUFFER (w->buffer)) |
1630 | < BUF_MODIFF (XBUFFER (w->buffer))) | |
1631 | != !NILP (w->last_had_star)) | |
94bb7f9b KH |
1632 | || ((!NILP (Vtransient_mark_mode) |
1633 | && !NILP (XBUFFER (w->buffer)->mark_active)) | |
1634 | != !NILP (w->region_showing))) | |
90adcf20 RS |
1635 | { |
1636 | struct buffer *prev = current_buffer; | |
a2725ab2 RS |
1637 | int count = specpdl_ptr - specpdl; |
1638 | ||
399164b4 | 1639 | set_buffer_internal_1 (XBUFFER (w->buffer)); |
eac4251c | 1640 | if (save_match_data) |
84dd0ae5 | 1641 | record_unwind_protect (Fset_match_data, Fmatch_data (Qnil, Qnil)); |
399164b4 | 1642 | if (NILP (Voverriding_local_map_menu_flag)) |
d46fb96a KH |
1643 | { |
1644 | specbind (Qoverriding_terminal_local_map, Qnil); | |
1645 | specbind (Qoverriding_local_map, Qnil); | |
1646 | } | |
a2725ab2 | 1647 | |
34acc8e6 KH |
1648 | /* Run the Lucid hook. */ |
1649 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
1650 | /* If it has changed current-menubar from previous value, | |
1651 | really recompute the menubar from the value. */ | |
1652 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
1653 | call0 (Qrecompute_lucid_menubar); | |
e02500d4 | 1654 | safe_run_hooks (Qmenu_bar_update_hook); |
8351baf2 | 1655 | FRAME_MENU_BAR_ITEMS (f) = menu_bar_items (FRAME_MENU_BAR_ITEMS (f)); |
538f13d4 | 1656 | /* Redisplay the menu bar in case we changed it. */ |
8f3343d0 | 1657 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
d1e74921 | 1658 | if (FRAME_WINDOW_P (f)) |
d3413a53 | 1659 | set_frame_menubar (f, 0, 0); |
538f13d4 RS |
1660 | else |
1661 | /* On a terminal screen, the menu bar is an ordinary screen | |
1662 | line, and this makes it get updated. */ | |
1663 | w->update_mode_line = Qt; | |
1664 | #else /* ! (USE_X_TOOLKIT || HAVE_NTGUI) */ | |
1665 | /* In the non-toolkit version, the menu bar is an ordinary screen | |
1666 | line, and this makes it get updated. */ | |
1667 | w->update_mode_line = Qt; | |
1668 | #endif /* ! (USE_X_TOOLKIT || HAVE_NTGUI) */ | |
a2725ab2 RS |
1669 | |
1670 | unbind_to (count, Qnil); | |
399164b4 | 1671 | set_buffer_internal_1 (prev); |
90adcf20 RS |
1672 | } |
1673 | } | |
1674 | } | |
1675 | \f | |
a2889657 JB |
1676 | int do_id = 1; |
1677 | ||
90adcf20 RS |
1678 | /* Redisplay WINDOW and its subwindows and siblings. */ |
1679 | ||
a2889657 | 1680 | static void |
e9874cee | 1681 | redisplay_windows (window, preserve_echo_area) |
a2889657 | 1682 | Lisp_Object window; |
e9874cee | 1683 | int preserve_echo_area; |
a2889657 | 1684 | { |
265a9e55 | 1685 | for (; !NILP (window); window = XWINDOW (window)->next) |
e9874cee | 1686 | redisplay_window (window, 0, preserve_echo_area); |
a2889657 JB |
1687 | } |
1688 | ||
1f1ff51d KH |
1689 | /* Return value in display table DP (Lisp_Char_Table *) for character |
1690 | C. Since a display table doesn't have any parent, we don't have to | |
1691 | follow parent. Do not call this function directly but use the | |
1692 | macro DISP_CHAR_VECTOR. */ | |
1693 | Lisp_Object | |
1694 | disp_char_vector (dp, c) | |
1695 | struct Lisp_Char_Table *dp; | |
1696 | int c; | |
1697 | { | |
1698 | int code[4], i; | |
1699 | Lisp_Object val; | |
1700 | ||
1701 | if (SINGLE_BYTE_CHAR_P (c)) return (dp->contents[c]); | |
1702 | ||
1703 | SPLIT_NON_ASCII_CHAR (c, code[0], code[1], code[2]); | |
1704 | if (code[0] != CHARSET_COMPOSITION) | |
1705 | { | |
1706 | if (code[1] < 32) code[1] = -1; | |
1707 | else if (code[2] < 32) code[2] = -1; | |
1708 | } | |
1709 | /* Here, the possible range of CODE[0] (== charset ID) is | |
1710 | 128..MAX_CHARSET. Since the top level char table contains data | |
1711 | for multibyte characters after 256th element, we must increment | |
1712 | CODE[0] by 128 to get a correct index. */ | |
1713 | code[0] += 128; | |
1714 | code[3] = -1; /* anchor */ | |
1715 | ||
1716 | for (i = 0; code[i] >= 0; i++, dp = XCHAR_TABLE (val)) | |
1717 | { | |
1718 | val = dp->contents[code[i]]; | |
1719 | if (!SUB_CHAR_TABLE_P (val)) | |
1720 | return (NILP (val) ? dp->defalt : val); | |
1721 | } | |
1722 | /* Here, VAL is a sub char table. We return the default value of it. */ | |
1723 | return (dp->defalt); | |
1724 | } | |
1725 | ||
90adcf20 RS |
1726 | /* Redisplay window WINDOW and its subwindows. */ |
1727 | ||
a2889657 | 1728 | static void |
e9874cee | 1729 | redisplay_window (window, just_this_one, preserve_echo_area) |
a2889657 | 1730 | Lisp_Object window; |
e9874cee | 1731 | int just_this_one, preserve_echo_area; |
a2889657 JB |
1732 | { |
1733 | register struct window *w = XWINDOW (window); | |
30c566e4 | 1734 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
a2889657 | 1735 | int height; |
12adba34 RS |
1736 | int lpoint = PT; |
1737 | int lpoint_byte = PT_BYTE; | |
a2889657 | 1738 | struct buffer *old = current_buffer; |
b1d1124b | 1739 | register int width = window_internal_width (w) - 1; |
12adba34 | 1740 | register int startp, startp_byte; |
a2889657 JB |
1741 | register int hscroll = XINT (w->hscroll); |
1742 | struct position pos; | |
ae3b1442 | 1743 | int opoint = PT; |
12adba34 | 1744 | int opoint_byte = PT_BYTE; |
a2889657 | 1745 | int tem; |
e481f960 | 1746 | int update_mode_line; |
f908610f | 1747 | struct Lisp_Char_Table *dp = window_display_table (w); |
5ba50c51 | 1748 | int really_switched_buffer = 0; |
2e54982e | 1749 | int count = specpdl_ptr - specpdl; |
a2889657 | 1750 | |
12adba34 RS |
1751 | if (Z == Z_BYTE && lpoint != lpoint_byte) |
1752 | abort (); | |
1753 | if (lpoint_byte < lpoint) | |
1754 | abort (); | |
1755 | ||
44fa5b1e | 1756 | if (FRAME_HEIGHT (f) == 0) abort (); /* Some bug zeros some core */ |
a2889657 JB |
1757 | |
1758 | /* If this is a combination window, do its children; that's all. */ | |
1759 | ||
265a9e55 | 1760 | if (!NILP (w->vchild)) |
a2889657 | 1761 | { |
f9c467a3 | 1762 | redisplay_windows (w->vchild, preserve_echo_area); |
a2889657 JB |
1763 | return; |
1764 | } | |
265a9e55 | 1765 | if (!NILP (w->hchild)) |
a2889657 | 1766 | { |
f9c467a3 | 1767 | redisplay_windows (w->hchild, preserve_echo_area); |
a2889657 JB |
1768 | return; |
1769 | } | |
265a9e55 | 1770 | if (NILP (w->buffer)) |
a2889657 | 1771 | abort (); |
2e54982e RS |
1772 | |
1773 | specbind (Qinhibit_point_motion_hooks, Qt); | |
1774 | ||
8de2d90b | 1775 | height = window_internal_height (w); |
4d641a15 | 1776 | update_mode_line = (!NILP (w->update_mode_line) || update_mode_lines); |
73af359d RS |
1777 | if (XBUFFER (w->buffer)->clip_changed) |
1778 | update_mode_line = 1; | |
8de2d90b JB |
1779 | |
1780 | if (MINI_WINDOW_P (w)) | |
1781 | { | |
73af359d RS |
1782 | if (w == XWINDOW (echo_area_window) && echo_area_glyphs) |
1783 | /* We've already displayed the echo area glyphs in this window. */ | |
1784 | goto finish_scroll_bars; | |
1785 | else if (w != XWINDOW (minibuf_window)) | |
8de2d90b | 1786 | { |
73af359d RS |
1787 | /* This is a minibuffer, but it's not the currently active one, |
1788 | so clear it. */ | |
1789 | int vpos = XFASTINT (w->top); | |
8de2d90b JB |
1790 | int i; |
1791 | ||
1792 | for (i = 0; i < height; i++) | |
1793 | { | |
44fa5b1e | 1794 | get_display_line (f, vpos + i, 0); |
73f194f1 RS |
1795 | display_string (w, vpos + i, "", 0, |
1796 | FRAME_LEFT_SCROLL_BAR_WIDTH (f), | |
a3788d53 | 1797 | 0, 1, 0, width, 0); |
8de2d90b JB |
1798 | } |
1799 | ||
88f22aff | 1800 | goto finish_scroll_bars; |
8de2d90b JB |
1801 | } |
1802 | } | |
a2889657 | 1803 | |
a2889657 JB |
1804 | /* Otherwise set up data on this window; select its buffer and point value */ |
1805 | ||
e481f960 | 1806 | if (update_mode_line) |
5ba50c51 RS |
1807 | /* Really select the buffer, for the sake of buffer-local variables. */ |
1808 | { | |
1809 | set_buffer_internal_1 (XBUFFER (w->buffer)); | |
1810 | really_switched_buffer = 1; | |
1811 | } | |
e481f960 RS |
1812 | else |
1813 | set_buffer_temp (XBUFFER (w->buffer)); | |
1814 | ||
ae3b1442 | 1815 | opoint = PT; |
12adba34 RS |
1816 | opoint_byte = PT_BYTE; |
1817 | ||
1818 | if (Z == Z_BYTE && opoint != opoint_byte) | |
1819 | abort (); | |
1820 | if (opoint_byte < opoint) | |
1821 | abort (); | |
a2889657 | 1822 | |
28995e67 RS |
1823 | /* If %c is in mode line, update it if needed. */ |
1824 | if (!NILP (w->column_number_displayed) | |
1825 | /* This alternative quickly identifies a common case | |
1826 | where no change is needed. */ | |
1827 | && !(PT == XFASTINT (w->last_point) | |
8850a573 RS |
1828 | && XFASTINT (w->last_modified) >= MODIFF |
1829 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF) | |
28995e67 RS |
1830 | && XFASTINT (w->column_number_displayed) != current_column ()) |
1831 | update_mode_line = 1; | |
1832 | ||
42640f83 RS |
1833 | /* Count number of windows showing the selected buffer. |
1834 | An indirect buffer counts as its base buffer. */ | |
a2889657 | 1835 | |
42640f83 RS |
1836 | if (!just_this_one) |
1837 | { | |
1838 | struct buffer *current_base, *window_base; | |
1839 | current_base = current_buffer; | |
1840 | window_base = XBUFFER (XWINDOW (selected_window)->buffer); | |
1841 | if (current_base->base_buffer) | |
1842 | current_base = current_base->base_buffer; | |
1843 | if (window_base->base_buffer) | |
1844 | window_base = window_base->base_buffer; | |
1845 | if (current_base == window_base) | |
1846 | buffer_shared++; | |
1847 | } | |
a2889657 JB |
1848 | |
1849 | /* POINT refers normally to the selected window. | |
1850 | For any other window, set up appropriate value. */ | |
1851 | ||
1852 | if (!EQ (window, selected_window)) | |
1853 | { | |
12adba34 RS |
1854 | int new_pt = XMARKER (w->pointm)->charpos; |
1855 | int new_pt_byte = marker_byte_position (w->pointm); | |
f67a0f51 | 1856 | if (new_pt < BEGV) |
a2889657 | 1857 | { |
f67a0f51 | 1858 | new_pt = BEGV; |
12adba34 RS |
1859 | new_pt_byte = BEGV_BYTE; |
1860 | set_marker_both (w->pointm, Qnil, BEGV, BEGV_BYTE); | |
a2889657 | 1861 | } |
f67a0f51 | 1862 | else if (new_pt > (ZV - 1)) |
a2889657 | 1863 | { |
f67a0f51 | 1864 | new_pt = ZV; |
12adba34 RS |
1865 | new_pt_byte = ZV_BYTE; |
1866 | set_marker_both (w->pointm, Qnil, ZV, ZV_BYTE); | |
a2889657 | 1867 | } |
f67a0f51 | 1868 | /* We don't use SET_PT so that the point-motion hooks don't run. */ |
12adba34 | 1869 | TEMP_SET_PT_BOTH (new_pt, new_pt_byte); |
a2889657 JB |
1870 | } |
1871 | ||
f4faa47c JB |
1872 | /* If any of the character widths specified in the display table |
1873 | have changed, invalidate the width run cache. It's true that this | |
1874 | may be a bit late to catch such changes, but the rest of | |
1875 | redisplay goes (non-fatally) haywire when the display table is | |
1876 | changed, so why should we worry about doing any better? */ | |
1877 | if (current_buffer->width_run_cache) | |
1878 | { | |
f908610f | 1879 | struct Lisp_Char_Table *disptab = buffer_display_table (); |
f4faa47c JB |
1880 | |
1881 | if (! disptab_matches_widthtab (disptab, | |
1882 | XVECTOR (current_buffer->width_table))) | |
1883 | { | |
1884 | invalidate_region_cache (current_buffer, | |
1885 | current_buffer->width_run_cache, | |
1886 | BEG, Z); | |
1887 | recompute_width_table (current_buffer, disptab); | |
1888 | } | |
1889 | } | |
1890 | ||
a2889657 | 1891 | /* If window-start is screwed up, choose a new one. */ |
a2889657 JB |
1892 | if (XMARKER (w->start)->buffer != current_buffer) |
1893 | goto recenter; | |
1894 | ||
1895 | startp = marker_position (w->start); | |
12adba34 | 1896 | startp_byte = marker_byte_position (w->start); |
a2889657 | 1897 | |
cf0df6ab RS |
1898 | /* If someone specified a new starting point but did not insist, |
1899 | check whether it can be used. */ | |
1900 | if (!NILP (w->optional_new_start)) | |
1901 | { | |
1902 | w->optional_new_start = Qnil; | |
1903 | /* Check whether this start pos is usable given where point is. */ | |
1904 | ||
1905 | pos = *compute_motion (startp, 0, | |
1906 | (((EQ (window, minibuf_window) | |
1907 | && startp == BEG) | |
1908 | ? minibuf_prompt_width : 0) | |
1909 | + (hscroll ? 1 - hscroll : 0)), | |
1910 | 0, | |
1c9241f5 KH |
1911 | PT, height, |
1912 | /* BUG FIX: See the comment of | |
1913 | Fpos_visible_in_window_p (window.c). */ | |
1914 | - (1 << (BITS_PER_SHORT - 1)), | |
12adba34 RS |
1915 | width, hscroll, |
1916 | pos_tab_offset (w, startp, startp_byte), w); | |
cf0df6ab RS |
1917 | /* If PT does fit on the screen, we will use this start pos, |
1918 | so do so by setting force_start. */ | |
1919 | if (pos.bufpos == PT) | |
1920 | w->force_start = Qt; | |
1921 | } | |
1922 | ||
8de2d90b | 1923 | /* Handle case where place to start displaying has been specified, |
aa6d10fa | 1924 | unless the specified location is outside the accessible range. */ |
265a9e55 | 1925 | if (!NILP (w->force_start)) |
a2889657 | 1926 | { |
e63574d7 | 1927 | w->force_start = Qnil; |
aa6d10fa RS |
1928 | /* Forget any recorded base line for line number display. */ |
1929 | w->base_line_number = Qnil; | |
75c43375 RS |
1930 | /* Redisplay the mode line. Select the buffer properly for that. |
1931 | Also, run the hook window-scroll-functions | |
1932 | because we have scrolled. */ | |
e63574d7 RS |
1933 | /* Note, we do this after clearing force_start because |
1934 | if there's an error, it is better to forget about force_start | |
1935 | than to get into an infinite loop calling the hook functions | |
1936 | and having them get more errors. */ | |
75c43375 RS |
1937 | if (!update_mode_line |
1938 | || ! NILP (Vwindow_scroll_functions)) | |
e481f960 | 1939 | { |
75c43375 RS |
1940 | Lisp_Object temp[3]; |
1941 | ||
5ba50c51 RS |
1942 | if (!really_switched_buffer) |
1943 | { | |
1944 | set_buffer_temp (old); | |
1945 | set_buffer_internal_1 (XBUFFER (w->buffer)); | |
1946 | } | |
1947 | really_switched_buffer = 1; | |
e481f960 RS |
1948 | update_mode_line = 1; |
1949 | w->update_mode_line = Qt; | |
75c43375 | 1950 | if (! NILP (Vwindow_scroll_functions)) |
3dcd07e3 KH |
1951 | { |
1952 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
1953 | make_number (startp)); | |
1954 | startp = marker_position (w->start); | |
1955 | } | |
e481f960 | 1956 | } |
c2213350 | 1957 | XSETFASTINT (w->last_modified, 0); |
8850a573 | 1958 | XSETFASTINT (w->last_overlay_modified, 0); |
12adba34 RS |
1959 | if (startp < BEGV) startp = BEGV, startp_byte = BEGV_BYTE; |
1960 | if (startp > ZV) startp = ZV, startp = ZV_BYTE; | |
a2889657 JB |
1961 | try_window (window, startp); |
1962 | if (cursor_vpos < 0) | |
1963 | { | |
1964 | /* If point does not appear, move point so it does appear */ | |
1965 | pos = *compute_motion (startp, 0, | |
ca26e1c8 KH |
1966 | (((EQ (window, minibuf_window) |
1967 | && startp == BEG) | |
1968 | ? minibuf_prompt_width : 0) | |
1969 | + (hscroll ? 1 - hscroll : 0)), | |
1970 | 0, | |
1971 | ZV, height / 2, | |
68be917d | 1972 | - (1 << (BITS_PER_SHORT - 1)), |
12adba34 RS |
1973 | width, hscroll, |
1974 | pos_tab_offset (w, startp, startp_byte), | |
1975 | w); | |
1976 | TEMP_SET_PT_BOTH (pos.bufpos, pos.bytepos); | |
90adcf20 | 1977 | if (w != XWINDOW (selected_window)) |
12adba34 | 1978 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
a2889657 JB |
1979 | else |
1980 | { | |
9d6a6bb9 | 1981 | if (current_buffer == old) |
12adba34 RS |
1982 | { |
1983 | lpoint = PT; | |
1984 | lpoint_byte = PT_BYTE; | |
1985 | } | |
73f194f1 | 1986 | FRAME_CURSOR_X (f) = (WINDOW_LEFT_MARGIN (w) |
210e752f | 1987 | + minmax (0, pos.hpos, width)); |
44fa5b1e | 1988 | FRAME_CURSOR_Y (f) = pos.vpos + XFASTINT (w->top); |
a2889657 | 1989 | } |
df0b5ea1 RS |
1990 | /* If we are highlighting the region, |
1991 | then we just changed the region, so redisplay to show it. */ | |
df0b5ea1 RS |
1992 | if (!NILP (Vtransient_mark_mode) |
1993 | && !NILP (current_buffer->mark_active)) | |
6f27fa9b RS |
1994 | { |
1995 | cancel_my_columns (XWINDOW (window)); | |
1996 | try_window (window, startp); | |
1997 | } | |
a2889657 JB |
1998 | } |
1999 | goto done; | |
2000 | } | |
2001 | ||
2002 | /* Handle case where text has not changed, only point, | |
208aee63 | 2003 | and it has not moved off the frame. */ |
a2889657 JB |
2004 | |
2005 | /* This code is not used for minibuffer for the sake of | |
2006 | the case of redisplaying to replace an echo area message; | |
2007 | since in that case the minibuffer contents per se are usually unchanged. | |
2008 | This code is of no real use in the minibuffer since | |
2009 | the handling of this_line_bufpos, etc., | |
2010 | in redisplay handles the same cases. */ | |
2011 | ||
2012 | if (XFASTINT (w->last_modified) >= MODIFF | |
8850a573 | 2013 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF |
86bee31c | 2014 | && PT >= startp && !current_buffer->clip_changed |
73f194f1 | 2015 | && (just_this_one || WINDOW_FULL_WIDTH_P (w)) |
b1aa6cb3 RS |
2016 | /* If force-mode-line-update was called, really redisplay; |
2017 | that's how redisplay is forced after e.g. changing | |
2018 | buffer-invisibility-spec. */ | |
632ab665 | 2019 | && NILP (w->update_mode_line) |
bd66d1ba RS |
2020 | /* Can't use this case if highlighting a region. */ |
2021 | && !(!NILP (Vtransient_mark_mode) && !NILP (current_buffer->mark_active)) | |
2022 | && NILP (w->region_showing) | |
15495c73 KH |
2023 | /* If end pos is out of date, scroll bar and percentage will be wrong */ |
2024 | && INTEGERP (w->window_end_vpos) | |
2025 | && XFASTINT (w->window_end_vpos) < XFASTINT (w->height) | |
d45de95b | 2026 | && !EQ (window, minibuf_window) |
377dbd97 RS |
2027 | && (!MARKERP (Voverlay_arrow_position) |
2028 | || current_buffer != XMARKER (Voverlay_arrow_position)->buffer)) | |
a2889657 | 2029 | { |
377dbd97 RS |
2030 | /* All positions in this clause are relative to the window edge. */ |
2031 | ||
9afd2168 | 2032 | int this_scroll_margin = scroll_margin; |
9c5886e7 | 2033 | int last_point_y = XFASTINT (w->last_point_y) - XINT (w->top); |
377dbd97 | 2034 | int last_point_x = (XFASTINT (w->last_point_x) - WINDOW_LEFT_MARGIN (w)); |
9afd2168 | 2035 | |
4cb46737 | 2036 | /* Find where PT is located now on the frame. */ |
916848d8 RS |
2037 | /* Check just_this_one as a way of verifying that the |
2038 | window edges have not changed. */ | |
9c5886e7 | 2039 | if (PT == XFASTINT (w->last_point) && just_this_one) |
4cb46737 | 2040 | { |
916848d8 RS |
2041 | pos.hpos = last_point_x; |
2042 | pos.vpos = last_point_y; | |
4cb46737 RS |
2043 | pos.bufpos = PT; |
2044 | } | |
9c5886e7 | 2045 | else if (PT > XFASTINT (w->last_point) |
d802580c RS |
2046 | && XFASTINT (w->last_point) > startp && just_this_one |
2047 | /* We can't use this if point is in the left margin of a | |
2048 | hscrolled window, because w->last_point_x has been | |
2049 | clipped to the window edges. */ | |
2050 | && !(last_point_x <= 0 && hscroll)) | |
4cb46737 | 2051 | { |
5ffc0a80 KH |
2052 | int last_point = XFASTINT (w->last_point); |
2053 | int last_point_byte = CHAR_TO_BYTE (last_point); | |
4a4c24d0 RS |
2054 | int tab_offset = (pos_tab_offset (w, last_point, last_point_byte) |
2055 | - (last_point_x + hscroll - !! hscroll)); | |
5ffc0a80 KH |
2056 | |
2057 | pos = *compute_motion (last_point, last_point_y, last_point_x, 0, | |
4cb46737 | 2058 | PT, height, |
4a4c24d0 | 2059 | /* BUG FIX: See the comment of |
4cb46737 RS |
2060 | Fpos_visible_in_window_p (window.c). */ |
2061 | - (1 << (BITS_PER_SHORT - 1)), | |
2062 | width, hscroll, | |
4a4c24d0 | 2063 | tab_offset, |
12adba34 | 2064 | w); |
4cb46737 RS |
2065 | } |
2066 | else | |
2067 | { | |
2068 | pos = *compute_motion (startp, 0, (hscroll ? 1 - hscroll : 0), 0, | |
2069 | PT, height, | |
2070 | /* BUG FIX: See the comment of | |
2071 | Fpos_visible_in_window_p (window.c). */ | |
2072 | - (1 << (BITS_PER_SHORT - 1)), | |
2073 | width, hscroll, | |
12adba34 RS |
2074 | pos_tab_offset (w, startp, startp_byte), |
2075 | w); | |
4cb46737 | 2076 | } |
a2889657 | 2077 | |
9afd2168 RS |
2078 | /* Don't use a scroll margin that is negative or too large. */ |
2079 | if (this_scroll_margin < 0) | |
2080 | this_scroll_margin = 0; | |
2081 | ||
2082 | if (XINT (w->height) < 4 * scroll_margin) | |
2083 | this_scroll_margin = XINT (w->height) / 4; | |
2084 | ||
2085 | /* If point fits on the screen, and not within the scroll margin, | |
2086 | we are ok. */ | |
2087 | if (pos.vpos < height - this_scroll_margin | |
2088 | && (pos.vpos >= this_scroll_margin || startp == BEGV)) | |
a2889657 | 2089 | { |
44fa5b1e JB |
2090 | /* Ok, point is still on frame */ |
2091 | if (w == XWINDOW (FRAME_SELECTED_WINDOW (f))) | |
a2889657 JB |
2092 | { |
2093 | /* These variables are supposed to be origin 1 */ | |
73f194f1 | 2094 | FRAME_CURSOR_X (f) = (WINDOW_LEFT_MARGIN (w) |
210e752f | 2095 | + minmax (0, pos.hpos, width)); |
44fa5b1e | 2096 | FRAME_CURSOR_Y (f) = pos.vpos + XFASTINT (w->top); |
a2889657 JB |
2097 | } |
2098 | /* This doesn't do the trick, because if a window to the right of | |
2099 | this one must be redisplayed, this does nothing because there | |
44fa5b1e | 2100 | is nothing in DesiredFrame yet, and then the other window is |
a2889657 | 2101 | redisplayed, making likes that are empty in this window's columns. |
73f194f1 | 2102 | if (WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
2103 | preserve_my_columns (w); |
2104 | */ | |
abb4c08f KH |
2105 | if (current_buffer->clip_changed |
2106 | && ! NILP (Vwindow_scroll_functions)) | |
2107 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2108 | make_number (marker_position (w->start))); | |
2109 | ||
a2889657 JB |
2110 | goto done; |
2111 | } | |
2112 | /* Don't bother trying redisplay with same start; | |
2113 | we already know it will lose */ | |
2114 | } | |
2115 | /* If current starting point was originally the beginning of a line | |
2116 | but no longer is, find a new starting point. */ | |
265a9e55 | 2117 | else if (!NILP (w->start_at_line_beg) |
b16234d8 | 2118 | && !(startp <= BEGV |
12adba34 | 2119 | || FETCH_BYTE (startp_byte - 1) == '\n')) |
a2889657 JB |
2120 | { |
2121 | goto recenter; | |
2122 | } | |
2123 | else if (just_this_one && !MINI_WINDOW_P (w) | |
ae3b1442 | 2124 | && PT >= startp |
a2889657 | 2125 | && XFASTINT (w->last_modified) |
14709f21 JB |
2126 | /* or else vmotion on first line won't work. */ |
2127 | && ! NILP (w->start_at_line_beg) | |
a2889657 | 2128 | && ! EQ (w->window_end_valid, Qnil) |
86bee31c | 2129 | && do_id && !current_buffer->clip_changed |
a2889657 | 2130 | && !blank_end_of_window |
73f194f1 | 2131 | && WINDOW_FULL_WIDTH_P (w) |
bd66d1ba RS |
2132 | /* Can't use this case if highlighting a region. */ |
2133 | && !(!NILP (Vtransient_mark_mode) | |
2134 | && !NILP (current_buffer->mark_active)) | |
23c852cb KH |
2135 | /* Don't use try_window_id if newline |
2136 | doesn't display as the end of a line. */ | |
2137 | && !(dp != 0 && VECTORP (DISP_CHAR_VECTOR (dp, '\n'))) | |
bd66d1ba | 2138 | && NILP (w->region_showing) |
d45de95b | 2139 | && EQ (last_arrow_position, COERCE_MARKER (Voverlay_arrow_position)) |
a2889657 | 2140 | && EQ (last_arrow_string, Voverlay_arrow_string) |
44fa5b1e | 2141 | && (tem = try_window_id (FRAME_SELECTED_WINDOW (f))) |
a2889657 JB |
2142 | && tem != -2) |
2143 | { | |
2144 | /* tem > 0 means success. tem == -1 means choose new start. | |
2145 | tem == -2 means try again with same start, | |
2146 | and nothing but whitespace follows the changed stuff. | |
2147 | tem == 0 means try again with same start. */ | |
2148 | if (tem > 0) | |
2149 | goto done; | |
2150 | } | |
2151 | else if (startp >= BEGV && startp <= ZV | |
e9874cee RS |
2152 | && (startp < ZV |
2153 | /* Avoid starting at end of buffer. */ | |
2154 | #if 0 /* This change causes trouble for M-! finger & RET. | |
2155 | It will have to be considered later. */ | |
2156 | || ! EQ (window, selected_window) | |
2157 | /* Don't do the recentering if redisplay | |
2158 | is not for no user action. */ | |
2159 | || preserve_echo_area | |
2160 | #endif | |
2161 | || startp == BEGV | |
8850a573 RS |
2162 | || (XFASTINT (w->last_modified) >= MODIFF |
2163 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF))) | |
a2889657 JB |
2164 | { |
2165 | /* Try to redisplay starting at same place as before */ | |
44fa5b1e | 2166 | /* If point has not moved off frame, accept the results */ |
a2889657 JB |
2167 | try_window (window, startp); |
2168 | if (cursor_vpos >= 0) | |
aa6d10fa | 2169 | { |
28995e67 RS |
2170 | if (!just_this_one || current_buffer->clip_changed |
2171 | || beg_unchanged < startp) | |
aa6d10fa RS |
2172 | /* Forget any recorded base line for line number display. */ |
2173 | w->base_line_number = Qnil; | |
abb4c08f KH |
2174 | |
2175 | if (current_buffer->clip_changed | |
2176 | && ! NILP (Vwindow_scroll_functions)) | |
2177 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2178 | make_number (marker_position (w->start))); | |
2179 | ||
aa6d10fa RS |
2180 | goto done; |
2181 | } | |
a2889657 JB |
2182 | else |
2183 | cancel_my_columns (w); | |
2184 | } | |
2185 | ||
c2213350 | 2186 | XSETFASTINT (w->last_modified, 0); |
8850a573 | 2187 | XSETFASTINT (w->last_overlay_modified, 0); |
e481f960 RS |
2188 | /* Redisplay the mode line. Select the buffer properly for that. */ |
2189 | if (!update_mode_line) | |
2190 | { | |
5ba50c51 RS |
2191 | if (!really_switched_buffer) |
2192 | { | |
2193 | set_buffer_temp (old); | |
2194 | set_buffer_internal_1 (XBUFFER (w->buffer)); | |
2195 | } | |
e481f960 RS |
2196 | update_mode_line = 1; |
2197 | w->update_mode_line = Qt; | |
2198 | } | |
a2889657 JB |
2199 | |
2200 | /* Try to scroll by specified few lines */ | |
2201 | ||
0789adb2 RS |
2202 | if (scroll_conservatively && !current_buffer->clip_changed |
2203 | && startp >= BEGV && startp <= ZV) | |
2204 | { | |
f9c8af06 | 2205 | int this_scroll_margin = scroll_margin; |
44173109 | 2206 | int scroll_margin_pos; |
f9c8af06 RS |
2207 | |
2208 | /* Don't use a scroll margin that is negative or too large. */ | |
2209 | if (this_scroll_margin < 0) | |
2210 | this_scroll_margin = 0; | |
2211 | ||
44173109 | 2212 | if (XINT (w->height) < 4 * this_scroll_margin) |
f9c8af06 RS |
2213 | this_scroll_margin = XINT (w->height) / 4; |
2214 | ||
44173109 RS |
2215 | scroll_margin_pos = Z - XFASTINT (w->window_end_pos); |
2216 | if (this_scroll_margin) | |
2217 | { | |
2218 | pos = *vmotion (scroll_margin_pos, -this_scroll_margin, w); | |
2219 | scroll_margin_pos = pos.bufpos; | |
2220 | } | |
2221 | if (PT >= scroll_margin_pos) | |
0789adb2 RS |
2222 | { |
2223 | struct position pos; | |
44173109 | 2224 | pos = *compute_motion (scroll_margin_pos, 0, 0, 0, |
0789adb2 RS |
2225 | PT, XFASTINT (w->height), 0, |
2226 | XFASTINT (w->width), XFASTINT (w->hscroll), | |
12adba34 RS |
2227 | pos_tab_offset (w, startp, startp_byte), |
2228 | w); | |
0789adb2 RS |
2229 | if (pos.vpos > scroll_conservatively) |
2230 | goto scroll_fail_1; | |
2231 | ||
44173109 | 2232 | pos = *vmotion (startp, pos.vpos + 1, w); |
0789adb2 RS |
2233 | |
2234 | if (! NILP (Vwindow_scroll_functions)) | |
2235 | { | |
12adba34 | 2236 | set_marker_both (w->start, Qnil, pos.bufpos, pos.bytepos); |
0789adb2 RS |
2237 | run_hook_with_args_2 (Qwindow_scroll_functions, window, |
2238 | make_number (pos.bufpos)); | |
2239 | pos.bufpos = marker_position (w->start); | |
2240 | } | |
2241 | try_window (window, pos.bufpos); | |
2242 | if (cursor_vpos >= 0) | |
2243 | { | |
2244 | if (!just_this_one || current_buffer->clip_changed | |
2245 | || beg_unchanged < startp) | |
2246 | /* Forget any recorded base line for line number display. */ | |
2247 | w->base_line_number = Qnil; | |
2248 | goto done; | |
2249 | } | |
2250 | else | |
2251 | cancel_my_columns (w); | |
2252 | } | |
44173109 RS |
2253 | |
2254 | scroll_margin_pos = startp; | |
2255 | if (this_scroll_margin) | |
2256 | { | |
2257 | pos = *vmotion (scroll_margin_pos, this_scroll_margin, w); | |
2258 | scroll_margin_pos = pos.bufpos; | |
2259 | } | |
2260 | if (PT < scroll_margin_pos) | |
0789adb2 RS |
2261 | { |
2262 | struct position pos; | |
2263 | pos = *compute_motion (PT, 0, 0, 0, | |
44173109 | 2264 | scroll_margin_pos, XFASTINT (w->height), 0, |
0789adb2 | 2265 | XFASTINT (w->width), XFASTINT (w->hscroll), |
12adba34 RS |
2266 | pos_tab_offset (w, startp, startp_byte), |
2267 | w); | |
52bc7624 | 2268 | if (pos.vpos > scroll_conservatively) |
0789adb2 RS |
2269 | goto scroll_fail_1; |
2270 | ||
44173109 | 2271 | pos = *vmotion (startp, -pos.vpos, w); |
0789adb2 RS |
2272 | |
2273 | if (! NILP (Vwindow_scroll_functions)) | |
2274 | { | |
12adba34 | 2275 | set_marker_both (w->start, Qnil, pos.bufpos, pos.bytepos); |
0789adb2 RS |
2276 | run_hook_with_args_2 (Qwindow_scroll_functions, window, |
2277 | make_number (pos.bufpos)); | |
2278 | pos.bufpos = marker_position (w->start); | |
2279 | } | |
2280 | try_window (window, pos.bufpos); | |
2281 | if (cursor_vpos >= 0) | |
2282 | { | |
2283 | if (!just_this_one || current_buffer->clip_changed | |
2284 | || beg_unchanged < startp) | |
2285 | /* Forget any recorded base line for line number display. */ | |
2286 | w->base_line_number = Qnil; | |
2287 | goto done; | |
2288 | } | |
2289 | else | |
2290 | cancel_my_columns (w); | |
2291 | } | |
2292 | scroll_fail_1: ; | |
2293 | } | |
2294 | ||
2c081c2d KH |
2295 | if (scroll_step && !current_buffer->clip_changed |
2296 | && startp >= BEGV && startp <= ZV) | |
a2889657 | 2297 | { |
ae3b1442 | 2298 | if (PT > startp) |
a2889657 | 2299 | { |
210e752f | 2300 | pos = *vmotion (Z - XFASTINT (w->window_end_pos), scroll_step, w); |
a2889657 JB |
2301 | if (pos.vpos >= height) |
2302 | goto scroll_fail; | |
2303 | } | |
2304 | ||
210e752f | 2305 | pos = *vmotion (startp, (PT < startp ? - scroll_step : scroll_step), w); |
a2889657 | 2306 | |
ae3b1442 | 2307 | if (PT >= pos.bufpos) |
a2889657 | 2308 | { |
75c43375 | 2309 | if (! NILP (Vwindow_scroll_functions)) |
3dcd07e3 | 2310 | { |
12adba34 | 2311 | set_marker_both (w->start, Qnil, pos.bufpos, pos.bytepos); |
3dcd07e3 KH |
2312 | run_hook_with_args_2 (Qwindow_scroll_functions, window, |
2313 | make_number (pos.bufpos)); | |
2314 | pos.bufpos = marker_position (w->start); | |
2315 | } | |
a2889657 JB |
2316 | try_window (window, pos.bufpos); |
2317 | if (cursor_vpos >= 0) | |
aa6d10fa | 2318 | { |
28995e67 RS |
2319 | if (!just_this_one || current_buffer->clip_changed |
2320 | || beg_unchanged < startp) | |
aa6d10fa RS |
2321 | /* Forget any recorded base line for line number display. */ |
2322 | w->base_line_number = Qnil; | |
2323 | goto done; | |
2324 | } | |
a2889657 JB |
2325 | else |
2326 | cancel_my_columns (w); | |
2327 | } | |
2328 | scroll_fail: ; | |
2329 | } | |
2330 | ||
2331 | /* Finally, just choose place to start which centers point */ | |
2332 | ||
2333 | recenter: | |
aa6d10fa RS |
2334 | /* Forget any previously recorded base line for line number display. */ |
2335 | w->base_line_number = Qnil; | |
2336 | ||
210e752f | 2337 | pos = *vmotion (PT, - (height / 2), w); |
010494d0 KH |
2338 | |
2339 | /* The minibuffer is often just one line. Ordinary scrolling | |
2340 | gives little overlap and looks bad. So show 20 chars before point. */ | |
2341 | if (height == 1 | |
2342 | && (pos.bufpos >= PT - minibuffer_scroll_overlap | |
2343 | /* If we scrolled less than 1/2 line forward, we will | |
2344 | get too much overlap, so change to the usual amount. */ | |
2345 | || pos.bufpos < startp + width / 2) | |
2346 | && PT > BEGV + minibuffer_scroll_overlap | |
2347 | /* If we scrolled to an actual line boundary, | |
2348 | that's different; don't ignore line boundaries. */ | |
f1c87a7d | 2349 | && FETCH_BYTE (pos.bytepos - 1) != '\n') |
835766b6 RS |
2350 | { |
2351 | pos.bufpos = PT - minibuffer_scroll_overlap; | |
2352 | pos.bytepos = CHAR_TO_BYTE (pos.bufpos); | |
2353 | } | |
010494d0 | 2354 | |
e63574d7 RS |
2355 | /* Set startp here explicitly in case that helps avoid an infinite loop |
2356 | in case the window-scroll-functions functions get errors. */ | |
12adba34 | 2357 | set_marker_both (w->start, Qnil, pos.bufpos, pos.bytepos); |
75c43375 | 2358 | if (! NILP (Vwindow_scroll_functions)) |
3dcd07e3 KH |
2359 | { |
2360 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2361 | make_number (pos.bufpos)); | |
2362 | pos.bufpos = marker_position (w->start); | |
835766b6 | 2363 | pos.bytepos = marker_byte_position (w->start); |
3dcd07e3 | 2364 | } |
a2889657 JB |
2365 | try_window (window, pos.bufpos); |
2366 | ||
2367 | startp = marker_position (w->start); | |
12adba34 | 2368 | startp_byte = marker_byte_position (w->start); |
ca26e1c8 | 2369 | w->start_at_line_beg |
12adba34 | 2370 | = (startp == BEGV || FETCH_BYTE (startp_byte - 1) == '\n') ? Qt : Qnil; |
a2889657 JB |
2371 | |
2372 | done: | |
e481f960 | 2373 | if ((update_mode_line |
aa6d10fa RS |
2374 | /* If window not full width, must redo its mode line |
2375 | if the window to its side is being redone */ | |
73f194f1 | 2376 | || (!just_this_one && !WINDOW_FULL_WIDTH_P (w)) |
155ef550 KH |
2377 | || INTEGERP (w->base_line_pos) |
2378 | || (!NILP (w->column_number_displayed) | |
2379 | && XFASTINT (w->column_number_displayed) != current_column ())) | |
a2889657 | 2380 | && height != XFASTINT (w->height)) |
5ba50c51 RS |
2381 | { |
2382 | FRAME_PTR oframe = selected_frame; | |
2383 | if (!really_switched_buffer) | |
2384 | { | |
2385 | set_buffer_temp (old); | |
2386 | set_buffer_internal_1 (XBUFFER (w->buffer)); | |
2387 | really_switched_buffer = 1; | |
2388 | } | |
2389 | selected_frame = f; | |
2390 | display_mode_line (w); | |
2391 | selected_frame = oframe; | |
2392 | } | |
aa6d10fa RS |
2393 | if (! line_number_displayed |
2394 | && ! BUFFERP (w->base_line_pos)) | |
2395 | { | |
2396 | w->base_line_pos = Qnil; | |
2397 | w->base_line_number = Qnil; | |
2398 | } | |
a2889657 | 2399 | |
7ce2c095 | 2400 | /* When we reach a frame's selected window, redo the frame's menu bar. */ |
e481f960 | 2401 | if (update_mode_line |
d1e74921 | 2402 | && (FRAME_WINDOW_P (f) |
d3413a53 | 2403 | ? |
dc937613 | 2404 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
d3413a53 | 2405 | FRAME_EXTERNAL_MENU_BAR (f) |
76412d64 | 2406 | #else |
d3413a53 | 2407 | FRAME_MENU_BAR_LINES (f) > 0 |
76412d64 | 2408 | #endif |
d3413a53 | 2409 | : FRAME_MENU_BAR_LINES (f) > 0) |
7ce2c095 RS |
2410 | && EQ (FRAME_SELECTED_WINDOW (f), window)) |
2411 | display_menu_bar (w); | |
2412 | ||
88f22aff JB |
2413 | finish_scroll_bars: |
2414 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
30c566e4 | 2415 | { |
b1d1124b | 2416 | int start, end, whole; |
30c566e4 | 2417 | |
b1d1124b | 2418 | /* Calculate the start and end positions for the current window. |
3505ea70 JB |
2419 | At some point, it would be nice to choose between scrollbars |
2420 | which reflect the whole buffer size, with special markers | |
2421 | indicating narrowing, and scrollbars which reflect only the | |
2422 | visible region. | |
2423 | ||
b1d1124b JB |
2424 | Note that minibuffers sometimes aren't displaying any text. */ |
2425 | if (! MINI_WINDOW_P (w) | |
2426 | || (w == XWINDOW (minibuf_window) && ! echo_area_glyphs)) | |
2427 | { | |
8a9311d7 | 2428 | whole = ZV - BEGV; |
4d641a15 | 2429 | start = marker_position (w->start) - BEGV; |
b1d1124b JB |
2430 | /* I don't think this is guaranteed to be right. For the |
2431 | moment, we'll pretend it is. */ | |
85f26be9 | 2432 | end = (Z - XINT (w->window_end_pos)) - BEGV; |
3505ea70 JB |
2433 | |
2434 | if (end < start) end = start; | |
8a9311d7 | 2435 | if (whole < (end - start)) whole = end - start; |
b1d1124b JB |
2436 | } |
2437 | else | |
2438 | start = end = whole = 0; | |
30c566e4 | 2439 | |
88f22aff | 2440 | /* Indicate what this scroll bar ought to be displaying now. */ |
7eb9ba41 | 2441 | (*set_vertical_scroll_bar_hook) (w, end - start, whole, start); |
30c566e4 | 2442 | |
88f22aff | 2443 | /* Note that we actually used the scroll bar attached to this window, |
30c566e4 | 2444 | so it shouldn't be deleted at the end of redisplay. */ |
88f22aff | 2445 | (*redeem_scroll_bar_hook) (w); |
30c566e4 | 2446 | } |
b1d1124b | 2447 | |
12adba34 | 2448 | TEMP_SET_PT_BOTH (opoint, opoint_byte); |
5ba50c51 | 2449 | if (really_switched_buffer) |
f72df6ac | 2450 | set_buffer_internal_1 (old); |
e481f960 RS |
2451 | else |
2452 | set_buffer_temp (old); | |
12adba34 | 2453 | TEMP_SET_PT_BOTH (lpoint, lpoint_byte); |
2e54982e RS |
2454 | |
2455 | unbind_to (count, Qnil); | |
a2889657 JB |
2456 | } |
2457 | \f | |
2458 | /* Do full redisplay on one window, starting at position `pos'. */ | |
2459 | ||
2460 | static void | |
2461 | try_window (window, pos) | |
2462 | Lisp_Object window; | |
2463 | register int pos; | |
2464 | { | |
2465 | register struct window *w = XWINDOW (window); | |
2466 | register int height = window_internal_height (w); | |
2467 | register int vpos = XFASTINT (w->top); | |
2468 | register int last_text_vpos = vpos; | |
44fa5b1e | 2469 | FRAME_PTR f = XFRAME (w->frame); |
b1d1124b | 2470 | int width = window_internal_width (w) - 1; |
a2889657 JB |
2471 | struct position val; |
2472 | ||
9cbab4ff RS |
2473 | /* POS should never be out of range! */ |
2474 | if (pos < XBUFFER (w->buffer)->begv | |
2475 | || pos > XBUFFER (w->buffer)->zv) | |
2476 | abort (); | |
2477 | ||
12adba34 RS |
2478 | if (XMARKER (w->start)->charpos != pos) |
2479 | Fset_marker (w->start, make_number (pos), Qnil); | |
2480 | ||
a2889657 JB |
2481 | cursor_vpos = -1; |
2482 | overlay_arrow_seen = 0; | |
ca26e1c8 | 2483 | zv_strings_seen = 0; |
a2889657 | 2484 | val.hpos = XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0; |
0f9c0ff0 | 2485 | val.ovstring_chars_done = 0; |
12adba34 RS |
2486 | val.bytepos = marker_byte_position (w->start); |
2487 | val.tab_offset = pos_tab_offset (w, pos, val.bytepos); | |
a2889657 JB |
2488 | |
2489 | while (--height >= 0) | |
2490 | { | |
12adba34 RS |
2491 | val = *display_text_line (w, pos, val.bytepos, vpos, |
2492 | val.hpos, val.tab_offset, | |
0f9c0ff0 | 2493 | val.ovstring_chars_done); |
1c9241f5 KH |
2494 | /* The following code is omitted because we maintain tab_offset |
2495 | in VAL. */ | |
2496 | #if 0 | |
a2889657 JB |
2497 | tab_offset += width; |
2498 | if (val.vpos) tab_offset = 0; | |
1c9241f5 | 2499 | #endif /* 0 */ |
a2889657 JB |
2500 | vpos++; |
2501 | if (pos != val.bufpos) | |
642eefc6 RS |
2502 | { |
2503 | int invis = 0; | |
e885523c | 2504 | #ifdef USE_TEXT_PROPERTIES |
642eefc6 | 2505 | Lisp_Object invis_prop; |
975d21ea AS |
2506 | invis_prop = Fget_char_property (make_number (val.bufpos - 1), |
2507 | Qinvisible, window); | |
642eefc6 | 2508 | invis = TEXT_PROP_MEANS_INVISIBLE (invis_prop); |
e885523c | 2509 | #endif |
642eefc6 RS |
2510 | |
2511 | last_text_vpos | |
2512 | /* Next line, unless prev line ended in end of buffer with no cr */ | |
2513 | = vpos - (val.vpos | |
12adba34 | 2514 | && (FETCH_BYTE (val.bytepos - 1) != '\n' || invis)); |
642eefc6 | 2515 | } |
a2889657 JB |
2516 | pos = val.bufpos; |
2517 | } | |
2518 | ||
2519 | /* If last line is continued in middle of character, | |
44fa5b1e | 2520 | include the split character in the text considered on the frame */ |
a2889657 JB |
2521 | if (val.hpos < (XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0)) |
2522 | pos++; | |
2523 | ||
44fa5b1e | 2524 | /* If bottom just moved off end of frame, change mode line percentage. */ |
a2889657 JB |
2525 | if (XFASTINT (w->window_end_pos) == 0 |
2526 | && Z != pos) | |
2527 | w->update_mode_line = Qt; | |
2528 | ||
44fa5b1e | 2529 | /* Say where last char on frame will be, once redisplay is finished. */ |
c2213350 KH |
2530 | XSETFASTINT (w->window_end_pos, Z - pos); |
2531 | XSETFASTINT (w->window_end_vpos, last_text_vpos - XFASTINT (w->top)); | |
a2889657 JB |
2532 | /* But that is not valid info until redisplay finishes. */ |
2533 | w->window_end_valid = Qnil; | |
2534 | } | |
2535 | \f | |
2536 | /* Try to redisplay when buffer is modified locally, | |
2537 | computing insert/delete line to preserve text outside | |
2538 | the bounds of the changes. | |
2539 | Return 1 if successful, 0 if if cannot tell what to do, | |
2540 | or -1 to tell caller to find a new window start, | |
2541 | or -2 to tell caller to do normal redisplay with same window start. */ | |
2542 | ||
2543 | static int | |
2544 | try_window_id (window) | |
2545 | Lisp_Object window; | |
2546 | { | |
12adba34 RS |
2547 | int pos, pos_byte; |
2548 | int opoint, opoint_byte; | |
a2889657 JB |
2549 | register struct window *w = XWINDOW (window); |
2550 | register int height = window_internal_height (w); | |
44fa5b1e | 2551 | FRAME_PTR f = XFRAME (w->frame); |
a2889657 JB |
2552 | int top = XFASTINT (w->top); |
2553 | int start = marker_position (w->start); | |
b1d1124b | 2554 | int width = window_internal_width (w) - 1; |
a2889657 JB |
2555 | int hscroll = XINT (w->hscroll); |
2556 | int lmargin = hscroll > 0 ? 1 - hscroll : 0; | |
ca26e1c8 | 2557 | int did_motion; |
a2889657 JB |
2558 | register int vpos; |
2559 | register int i, tem; | |
2560 | int last_text_vpos = 0; | |
2561 | int stop_vpos; | |
e24c997d KH |
2562 | int selective = (INTEGERP (current_buffer->selective_display) |
2563 | ? XINT (current_buffer->selective_display) | |
2564 | : !NILP (current_buffer->selective_display) ? -1 : 0); | |
a2889657 JB |
2565 | struct position val, bp, ep, xp, pp; |
2566 | int scroll_amount = 0; | |
2567 | int delta; | |
1c9241f5 | 2568 | int epto, old_tick; |
a2889657 | 2569 | |
12adba34 RS |
2570 | int start_byte = marker_byte_position (w->start); |
2571 | ||
a2889657 JB |
2572 | if (GPT - BEG < beg_unchanged) |
2573 | beg_unchanged = GPT - BEG; | |
2574 | if (Z - GPT < end_unchanged) | |
2575 | end_unchanged = Z - GPT; | |
2576 | ||
6a1dc7ac | 2577 | if (beg_unchanged + BEG < start) |
a2889657 JB |
2578 | return 0; /* Give up if changes go above top of window */ |
2579 | ||
2580 | /* Find position before which nothing is changed. */ | |
ca26e1c8 | 2581 | bp = *compute_motion (start, 0, lmargin, 0, |
1c9241f5 KH |
2582 | min (ZV, beg_unchanged + BEG), height, |
2583 | /* BUG FIX: See the comment of | |
12adba34 | 2584 | Fpos_visible_in_window_p (window.c). */ |
1c9241f5 | 2585 | - (1 << (BITS_PER_SHORT - 1)), |
12adba34 RS |
2586 | width, hscroll, |
2587 | pos_tab_offset (w, start, start_byte), | |
2588 | w); | |
a2889657 | 2589 | if (bp.vpos >= height) |
6e8290aa | 2590 | { |
632ab665 | 2591 | if (PT < bp.bufpos) |
6e8290aa | 2592 | { |
67481ae5 RS |
2593 | /* All changes are beyond the window end, and point is on the screen. |
2594 | We don't need to change the text at all. | |
6e8290aa JB |
2595 | But we need to update window_end_pos to account for |
2596 | any change in buffer size. */ | |
ca26e1c8 | 2597 | bp = *compute_motion (start, 0, lmargin, 0, |
1c9241f5 KH |
2598 | ZV, height, |
2599 | /* BUG FIX: See the comment of | |
2600 | Fpos_visible_in_window_p() (window.c). */ | |
2601 | - (1 << (BITS_PER_SHORT - 1)), | |
12adba34 RS |
2602 | width, hscroll, |
2603 | pos_tab_offset (w, start, start_byte), w); | |
c2213350 KH |
2604 | XSETFASTINT (w->window_end_vpos, height); |
2605 | XSETFASTINT (w->window_end_pos, Z - bp.bufpos); | |
4d641a15 | 2606 | goto findpoint; |
6e8290aa JB |
2607 | } |
2608 | return 0; | |
2609 | } | |
a2889657 JB |
2610 | |
2611 | vpos = bp.vpos; | |
2612 | ||
44fa5b1e | 2613 | /* Find beginning of that frame line. Must display from there. */ |
210e752f | 2614 | bp = *vmotion (bp.bufpos, 0, w); |
a2889657 JB |
2615 | |
2616 | pos = bp.bufpos; | |
12adba34 | 2617 | pos_byte = bp.bytepos; |
a2889657 JB |
2618 | val.hpos = lmargin; |
2619 | if (pos < start) | |
2620 | return -1; | |
2621 | ||
ca26e1c8 | 2622 | did_motion = 0; |
a2889657 | 2623 | /* If about to start displaying at the beginning of a continuation line, |
44fa5b1e | 2624 | really start with previous frame line, in case it was not |
a2889657 | 2625 | continued when last redisplayed */ |
05ba02eb JB |
2626 | if ((bp.contin && bp.bufpos - 1 == beg_unchanged && vpos > 0) |
2627 | || | |
2628 | /* Likewise if we have to worry about selective display. */ | |
9f412332 | 2629 | (selective > 0 && bp.bufpos - 1 == beg_unchanged && vpos > 0)) |
a2889657 | 2630 | { |
210e752f | 2631 | bp = *vmotion (bp.bufpos, -1, w); |
a2889657 JB |
2632 | --vpos; |
2633 | pos = bp.bufpos; | |
12adba34 | 2634 | pos_byte = bp.bytepos; |
a2889657 | 2635 | } |
1c9241f5 | 2636 | val.tab_offset = bp.tab_offset; /* Update tab offset. */ |
a2889657 JB |
2637 | |
2638 | if (bp.contin && bp.hpos != lmargin) | |
2639 | { | |
2640 | val.hpos = bp.prevhpos - width + lmargin; | |
1c9241f5 | 2641 | val.tab_offset = bp.tab_offset + bp.prevhpos - width; |
ca26e1c8 | 2642 | did_motion = 1; |
93fdf93b | 2643 | DEC_BOTH (pos, pos_byte); |
a2889657 JB |
2644 | } |
2645 | ||
2646 | bp.vpos = vpos; | |
2647 | ||
2648 | /* Find first visible newline after which no more is changed. */ | |
12adba34 RS |
2649 | opoint = PT, opoint_byte = PT_BYTE; |
2650 | SET_PT (Z - max (end_unchanged, Z - ZV)); | |
2651 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 1); | |
9f412332 | 2652 | if (selective > 0) |
12adba34 RS |
2653 | while (PT < ZV - 1 && indented_beyond_p (PT, PT_BYTE, selective)) |
2654 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 1); | |
2655 | tem = PT; | |
2656 | SET_PT_BOTH (opoint, opoint_byte); | |
a2889657 JB |
2657 | |
2658 | /* Compute the cursor position after that newline. */ | |
ca26e1c8 | 2659 | ep = *compute_motion (pos, vpos, val.hpos, did_motion, tem, |
68be917d | 2660 | height, - (1 << (BITS_PER_SHORT - 1)), |
1c9241f5 KH |
2661 | width, hscroll, |
2662 | /* We have tab offset in VAL, use it. */ | |
2663 | val.tab_offset, w); | |
a2889657 | 2664 | |
44fa5b1e JB |
2665 | /* If changes reach past the text available on the frame, |
2666 | just display rest of frame. */ | |
a2889657 JB |
2667 | if (ep.bufpos > Z - XFASTINT (w->window_end_pos)) |
2668 | stop_vpos = height; | |
2669 | else | |
2670 | stop_vpos = ep.vpos; | |
2671 | ||
2672 | /* If no newline before ep, the line ep is on includes some changes | |
2673 | that must be displayed. Make sure we don't stop before it. */ | |
2674 | /* Also, if changes reach all the way until ep.bufpos, | |
2675 | it is possible that something was deleted after the | |
2676 | newline before it, so the following line must be redrawn. */ | |
2677 | if (stop_vpos == ep.vpos | |
2678 | && (ep.bufpos == BEGV | |
f1c87a7d | 2679 | || FETCH_BYTE (ep.bytepos - 1) != '\n' |
a2889657 JB |
2680 | || ep.bufpos == Z - end_unchanged)) |
2681 | stop_vpos = ep.vpos + 1; | |
2682 | ||
2683 | cursor_vpos = -1; | |
2684 | overlay_arrow_seen = 0; | |
ca26e1c8 | 2685 | zv_strings_seen = 0; |
a2889657 JB |
2686 | |
2687 | /* If changes do not reach to bottom of window, | |
2688 | figure out how much to scroll the rest of the window */ | |
2689 | if (stop_vpos < height) | |
2690 | { | |
2691 | /* Now determine how far up or down the rest of the window has moved */ | |
ca26e1c8 | 2692 | xp = *compute_motion (ep.bufpos, ep.vpos, ep.hpos, 1, |
a2889657 | 2693 | Z - XFASTINT (w->window_end_pos), |
1c9241f5 KH |
2694 | /* Don't care for VPOS... */ |
2695 | 1 << (BITS_PER_SHORT - 1), | |
2696 | /* ... nor HPOS. */ | |
2697 | 1 << (BITS_PER_SHORT - 1), | |
2698 | width, hscroll, ep.tab_offset, w); | |
a2889657 JB |
2699 | scroll_amount = xp.vpos - XFASTINT (w->window_end_vpos); |
2700 | ||
44fa5b1e | 2701 | /* Is everything on frame below the changes whitespace? |
a2889657 | 2702 | If so, no scrolling is really necessary. */ |
f1c87a7d | 2703 | for (i = ep.bytepos; i < xp.bytepos; i++) |
a2889657 | 2704 | { |
1c9241f5 | 2705 | tem = FETCH_BYTE (i); |
a2889657 JB |
2706 | if (tem != ' ' && tem != '\n' && tem != '\t') |
2707 | break; | |
2708 | } | |
f1c87a7d | 2709 | if (i == xp.bytepos) |
a2889657 JB |
2710 | return -2; |
2711 | ||
e8e536a9 KH |
2712 | XSETFASTINT (w->window_end_vpos, |
2713 | XFASTINT (w->window_end_vpos) + scroll_amount); | |
a2889657 | 2714 | |
44fa5b1e | 2715 | /* Before doing any scrolling, verify that point will be on frame. */ |
010a899e | 2716 | if (PT > ep.bufpos && !(PT <= xp.bufpos && xp.vpos < height)) |
a2889657 | 2717 | { |
ae3b1442 | 2718 | if (PT <= xp.bufpos) |
a2889657 | 2719 | { |
ca26e1c8 | 2720 | pp = *compute_motion (ep.bufpos, ep.vpos, ep.hpos, 1, |
68be917d | 2721 | PT, height, - (1 << (BITS_PER_SHORT - 1)), |
1c9241f5 KH |
2722 | width, hscroll, |
2723 | /* We have tab offset in EP, use it. */ | |
2724 | ep.tab_offset, w); | |
a2889657 JB |
2725 | } |
2726 | else | |
2727 | { | |
ca26e1c8 | 2728 | pp = *compute_motion (xp.bufpos, xp.vpos, xp.hpos, 1, |
68be917d | 2729 | PT, height, - (1 << (BITS_PER_SHORT - 1)), |
e37f06d7 | 2730 | width, hscroll, |
1c9241f5 KH |
2731 | /* We have tab offset in XP, use it. */ |
2732 | xp.tab_offset, w); | |
a2889657 | 2733 | } |
ae3b1442 | 2734 | if (pp.bufpos < PT || pp.vpos == height) |
a2889657 JB |
2735 | return 0; |
2736 | cursor_vpos = pp.vpos + top; | |
73f194f1 | 2737 | cursor_hpos = WINDOW_LEFT_MARGIN (w) + minmax (0, pp.hpos, width); |
a2889657 JB |
2738 | } |
2739 | ||
2740 | if (stop_vpos - scroll_amount >= height | |
2741 | || ep.bufpos == xp.bufpos) | |
2742 | { | |
2743 | if (scroll_amount < 0) | |
2744 | stop_vpos -= scroll_amount; | |
2745 | scroll_amount = 0; | |
2746 | /* In this path, we have altered window_end_vpos | |
2747 | and not left it negative. | |
2748 | We must make sure that, in case display is preempted | |
44fa5b1e | 2749 | before the frame changes to reflect what we do here, |
a2889657 | 2750 | further updates will not come to try_window_id |
44fa5b1e | 2751 | and assume the frame and window_end_vpos match. */ |
a2889657 JB |
2752 | blank_end_of_window = 1; |
2753 | } | |
2754 | else if (!scroll_amount) | |
0d231165 RS |
2755 | { |
2756 | /* Even if we don't need to scroll, we must adjust the | |
2757 | charstarts of subsequent lines (that we won't redisplay) | |
2758 | according to the amount of text inserted or deleted. */ | |
2759 | int oldpos = FRAME_CURRENT_GLYPHS (f)->charstarts[ep.vpos + top][0]; | |
2760 | int adjust = ep.bufpos - oldpos; | |
2761 | adjust_window_charstarts (w, ep.vpos + top - 1, adjust); | |
2762 | } | |
a2889657 JB |
2763 | else if (bp.bufpos == Z - end_unchanged) |
2764 | { | |
2765 | /* If reprinting everything is nearly as fast as scrolling, | |
2766 | don't bother scrolling. Can happen if lines are short. */ | |
44fa5b1e | 2767 | if (scroll_cost (f, bp.vpos + top - scroll_amount, |
a2889657 JB |
2768 | top + height - max (0, scroll_amount), |
2769 | scroll_amount) | |
2770 | > xp.bufpos - bp.bufpos - 20) | |
2771 | /* Return "try normal display with same window-start." | |
2772 | Too bad we can't prevent further scroll-thinking. */ | |
2773 | return -2; | |
2774 | /* If pure deletion, scroll up as many lines as possible. | |
2775 | In common case of killing a line, this can save the | |
2776 | following line from being overwritten by scrolling | |
2777 | and therefore having to be redrawn. */ | |
44fa5b1e | 2778 | tem = scroll_frame_lines (f, bp.vpos + top - scroll_amount, |
d1cb44a4 RS |
2779 | top + height - max (0, scroll_amount), |
2780 | scroll_amount, bp.bufpos); | |
d2f84654 RS |
2781 | if (!tem) |
2782 | stop_vpos = height; | |
2783 | else | |
2784 | { | |
2785 | /* scroll_frame_lines did not properly adjust subsequent | |
2786 | lines' charstarts in the case where the text of the | |
2787 | screen line at bp.vpos has changed. | |
2788 | (This can happen in a deletion that ends in mid-line.) | |
8e6208c5 KH |
2789 | To adjust properly, we need to make things consistent |
2790 | at the position ep. | |
d2f84654 RS |
2791 | So do a second adjust to make that happen. |
2792 | Note that stop_vpos >= ep.vpos, so it is sufficient | |
2793 | to update the charstarts for lines at ep.vpos and below. */ | |
2794 | int oldstart | |
2795 | = FRAME_CURRENT_GLYPHS (f)->charstarts[ep.vpos + top][0]; | |
2796 | adjust_window_charstarts (w, ep.vpos + top - 1, | |
2797 | ep.bufpos - oldstart); | |
2798 | } | |
a2889657 JB |
2799 | } |
2800 | else if (scroll_amount) | |
2801 | { | |
2802 | /* If reprinting everything is nearly as fast as scrolling, | |
2803 | don't bother scrolling. Can happen if lines are short. */ | |
2804 | /* Note that if scroll_amount > 0, xp.bufpos - bp.bufpos is an | |
2805 | overestimate of cost of reprinting, since xp.bufpos | |
2806 | would end up below the bottom of the window. */ | |
44fa5b1e | 2807 | if (scroll_cost (f, ep.vpos + top - scroll_amount, |
a2889657 JB |
2808 | top + height - max (0, scroll_amount), |
2809 | scroll_amount) | |
2810 | > xp.bufpos - ep.bufpos - 20) | |
2811 | /* Return "try normal display with same window-start." | |
2812 | Too bad we can't prevent further scroll-thinking. */ | |
2813 | return -2; | |
44fa5b1e | 2814 | tem = scroll_frame_lines (f, ep.vpos + top - scroll_amount, |
a2889657 | 2815 | top + height - max (0, scroll_amount), |
d1cb44a4 | 2816 | scroll_amount, ep.bufpos); |
a2889657 JB |
2817 | if (!tem) stop_vpos = height; |
2818 | } | |
2819 | } | |
2820 | ||
2821 | /* In any case, do not display past bottom of window */ | |
2822 | if (stop_vpos >= height) | |
2823 | { | |
2824 | stop_vpos = height; | |
2825 | scroll_amount = 0; | |
2826 | } | |
2827 | ||
2828 | /* Handle case where pos is before w->start -- | |
2829 | can happen if part of line had been clipped and is not clipped now */ | |
2830 | if (vpos == 0 && pos < marker_position (w->start)) | |
2831 | Fset_marker (w->start, make_number (pos), Qnil); | |
2832 | ||
12adba34 RS |
2833 | val.bytepos = pos_byte; |
2834 | ||
a2889657 JB |
2835 | /* Redisplay the lines where the text was changed */ |
2836 | last_text_vpos = vpos; | |
1c9241f5 KH |
2837 | /* The following code is omitted because we maintain tab offset in |
2838 | val.tab_offset. */ | |
2839 | #if 0 | |
12adba34 | 2840 | tab_offset = pos_tab_offset (w, pos, pos_byte); |
a2889657 JB |
2841 | /* If we are starting display in mid-character, correct tab_offset |
2842 | to account for passing the line that that character really starts in. */ | |
2843 | if (val.hpos < lmargin) | |
2844 | tab_offset += width; | |
1c9241f5 | 2845 | #endif /* 0 */ |
d3413a53 | 2846 | old_tick = MODIFF; |
a2889657 JB |
2847 | while (vpos < stop_vpos) |
2848 | { | |
12adba34 RS |
2849 | val = *display_text_line (w, pos, val.bytepos, top + vpos++, |
2850 | val.hpos, val.tab_offset, | |
0f9c0ff0 | 2851 | val.ovstring_chars_done); |
d3413a53 RS |
2852 | /* If display_text_line ran a hook and changed some text, |
2853 | redisplay all the way to bottom of buffer | |
2854 | So that we show the changes. */ | |
2855 | if (old_tick != MODIFF) | |
2856 | stop_vpos = height; | |
1c9241f5 KH |
2857 | /* The following code is omitted because we maintain tab offset |
2858 | in val.tab_offset. */ | |
2859 | #if 0 | |
a2889657 JB |
2860 | tab_offset += width; |
2861 | if (val.vpos) tab_offset = 0; | |
1c9241f5 | 2862 | #endif |
a2889657 JB |
2863 | if (pos != val.bufpos) |
2864 | last_text_vpos | |
2865 | /* Next line, unless prev line ended in end of buffer with no cr */ | |
f1c87a7d | 2866 | = vpos - (val.vpos && FETCH_BYTE (val.bytepos - 1) != '\n'); |
a2889657 JB |
2867 | pos = val.bufpos; |
2868 | } | |
2869 | ||
2870 | /* There are two cases: | |
2871 | 1) we have displayed down to the bottom of the window | |
2872 | 2) we have scrolled lines below stop_vpos by scroll_amount */ | |
2873 | ||
2874 | if (vpos == height) | |
2875 | { | |
2876 | /* If last line is continued in middle of character, | |
44fa5b1e | 2877 | include the split character in the text considered on the frame */ |
a2889657 JB |
2878 | if (val.hpos < lmargin) |
2879 | val.bufpos++; | |
c2213350 KH |
2880 | XSETFASTINT (w->window_end_vpos, last_text_vpos); |
2881 | XSETFASTINT (w->window_end_pos, Z - val.bufpos); | |
a2889657 JB |
2882 | } |
2883 | ||
2884 | /* If scrolling made blank lines at window bottom, | |
2885 | redisplay to fill those lines */ | |
2886 | if (scroll_amount < 0) | |
2887 | { | |
2888 | /* Don't consider these lines for general-purpose scrolling. | |
2889 | That will save time in the scrolling computation. */ | |
44fa5b1e | 2890 | FRAME_SCROLL_BOTTOM_VPOS (f) = xp.vpos; |
a2889657 JB |
2891 | vpos = xp.vpos; |
2892 | pos = xp.bufpos; | |
12adba34 | 2893 | pos_byte = xp.bytepos; |
1c9241f5 KH |
2894 | val.hpos = xp.hpos; |
2895 | val.tab_offset = xp.tab_offset; | |
a2889657 | 2896 | if (pos == ZV) |
010a899e KH |
2897 | { /* Display from next line */ |
2898 | vpos = height + scroll_amount; | |
2899 | val.hpos = lmargin; | |
2900 | val.tab_offset = 0; | |
2901 | } | |
a2889657 JB |
2902 | else if (xp.contin && xp.hpos != lmargin) |
2903 | { | |
2904 | val.hpos = xp.prevhpos - width + lmargin; | |
1c9241f5 | 2905 | val.tab_offset = xp.tab_offset + bp.prevhpos - width; |
93fdf93b | 2906 | DEC_BOTH (pos, pos_byte); |
a2889657 JB |
2907 | } |
2908 | ||
2909 | blank_end_of_window = 1; | |
1c9241f5 KH |
2910 | /* The following code is omitted because we maintain tab offset |
2911 | in val.tab_offset. */ | |
2912 | #if 0 | |
12adba34 | 2913 | tab_offset = pos_tab_offset (w, pos, pos_byte); |
a2889657 JB |
2914 | /* If we are starting display in mid-character, correct tab_offset |
2915 | to account for passing the line that that character starts in. */ | |
2916 | if (val.hpos < lmargin) | |
2917 | tab_offset += width; | |
1c9241f5 | 2918 | #endif |
f1c87a7d | 2919 | val.bytepos = pos_byte; |
a2889657 JB |
2920 | while (vpos < height) |
2921 | { | |
12adba34 RS |
2922 | val = *display_text_line (w, pos, val.bytepos, |
2923 | top + vpos++, val.hpos, | |
1c9241f5 KH |
2924 | val.tab_offset, val.ovstring_chars_done); |
2925 | /* The following code is omitted because we maintain tab | |
2926 | offset in val.tab_offset. */ | |
2927 | #if 0 | |
a2889657 JB |
2928 | tab_offset += width; |
2929 | if (val.vpos) tab_offset = 0; | |
1c9241f5 | 2930 | #endif /* 0 */ |
a2889657 JB |
2931 | pos = val.bufpos; |
2932 | } | |
2933 | ||
2934 | /* Here is a case where display_text_line sets cursor_vpos wrong. | |
2935 | Make it be fixed up, below. */ | |
2936 | if (xp.bufpos == ZV | |
ae3b1442 | 2937 | && xp.bufpos == PT) |
a2889657 JB |
2938 | cursor_vpos = -1; |
2939 | } | |
2940 | ||
44fa5b1e | 2941 | /* If bottom just moved off end of frame, change mode line percentage. */ |
a2889657 JB |
2942 | if (XFASTINT (w->window_end_pos) == 0 |
2943 | && Z != val.bufpos) | |
2944 | w->update_mode_line = Qt; | |
2945 | ||
2946 | /* Attempt to adjust end-of-text positions to new bottom line */ | |
2947 | if (scroll_amount) | |
2948 | { | |
2949 | delta = height - xp.vpos; | |
2950 | if (delta < 0 | |
2951 | || (delta > 0 && xp.bufpos <= ZV) | |
2952 | || (delta == 0 && xp.hpos)) | |
2953 | { | |
210e752f | 2954 | val = *vmotion (Z - XFASTINT (w->window_end_pos), delta, w); |
c2213350 | 2955 | XSETFASTINT (w->window_end_pos, Z - val.bufpos); |
e8e536a9 KH |
2956 | XSETFASTINT (w->window_end_vpos, |
2957 | XFASTINT (w->window_end_vpos) + val.vpos); | |
a2889657 JB |
2958 | } |
2959 | } | |
2960 | ||
2961 | w->window_end_valid = Qnil; | |
2962 | ||
2963 | /* If point was not in a line that was displayed, find it */ | |
2964 | if (cursor_vpos < 0) | |
2965 | { | |
4d641a15 | 2966 | findpoint: |
1c9241f5 KH |
2967 | val = *compute_motion (start, 0, lmargin, 0, PT, |
2968 | /* Don't care for VPOS... */ | |
2969 | 1 << (BITS_PER_SHORT - 1), | |
2970 | /* ... nor HPOS. */ | |
2971 | 1 << (BITS_PER_SHORT - 1), | |
12adba34 RS |
2972 | width, hscroll, |
2973 | pos_tab_offset (w, start, start_byte), | |
2974 | w); | |
44fa5b1e | 2975 | /* Admit failure if point is off frame now */ |
a2889657 JB |
2976 | if (val.vpos >= height) |
2977 | { | |
2978 | for (vpos = 0; vpos < height; vpos++) | |
44fa5b1e | 2979 | cancel_line (vpos + top, f); |
a2889657 JB |
2980 | return 0; |
2981 | } | |
2982 | cursor_vpos = val.vpos + top; | |
73f194f1 | 2983 | cursor_hpos = WINDOW_LEFT_MARGIN (w) + minmax (0, val.hpos, width); |
a2889657 JB |
2984 | } |
2985 | ||
210e752f | 2986 | FRAME_CURSOR_X (f) = cursor_hpos; |
44fa5b1e | 2987 | FRAME_CURSOR_Y (f) = cursor_vpos; |
a2889657 JB |
2988 | |
2989 | if (debug_end_pos) | |
2990 | { | |
ca26e1c8 | 2991 | val = *compute_motion (start, 0, lmargin, 0, ZV, |
68be917d | 2992 | height, - (1 << (BITS_PER_SHORT - 1)), |
12adba34 RS |
2993 | width, hscroll, |
2994 | pos_tab_offset (w, start, start_byte), | |
2995 | w); | |
a2889657 JB |
2996 | if (val.vpos != XFASTINT (w->window_end_vpos)) |
2997 | abort (); | |
2998 | if (XFASTINT (w->window_end_pos) | |
2999 | != Z - val.bufpos) | |
3000 | abort (); | |
3001 | } | |
3002 | ||
3003 | return 1; | |
3004 | } | |
3005 | \f | |
278feba9 | 3006 | /* Copy LEN glyphs starting address FROM to the rope TO. |
f7430cb6 | 3007 | But don't actually copy the parts that would come in before S. |
278feba9 RS |
3008 | Value is TO, advanced past the copied data. |
3009 | F is the frame we are displaying in. */ | |
a2889657 | 3010 | |
278feba9 RS |
3011 | static GLYPH * |
3012 | copy_part_of_rope (f, to, s, from, len, face) | |
3013 | FRAME_PTR f; | |
3014 | register GLYPH *to; /* Copy to here. */ | |
a2889657 | 3015 | register GLYPH *s; /* Starting point. */ |
278feba9 RS |
3016 | Lisp_Object *from; /* Data to copy. */ |
3017 | int len; | |
1c2250c2 | 3018 | int face; /* Face to apply to glyphs which don't specify one. */ |
a2889657 | 3019 | { |
278feba9 RS |
3020 | int n = len; |
3021 | register Lisp_Object *fp = from; | |
3022 | /* These cache the results of the last call to compute_glyph_face. */ | |
3023 | int last_code = -1; | |
3024 | int last_merged = 0; | |
c581d710 | 3025 | |
87485d6f | 3026 | #ifdef HAVE_FACES |
4cdc65eb KH |
3027 | if (! FRAME_TERMCAP_P (f)) |
3028 | while (n--) | |
3029 | { | |
e57bca5d | 3030 | GLYPH glyph = (INTEGERP (*fp) ? XFASTINT (*fp) : 0); |
4cdc65eb | 3031 | int facecode; |
e57bca5d KH |
3032 | unsigned int c = FAST_GLYPH_CHAR (glyph); |
3033 | ||
3034 | if (c > MAX_CHAR) | |
3035 | /* For an invalid character code, use space. */ | |
3036 | c = ' '; | |
4cdc65eb KH |
3037 | |
3038 | if (FAST_GLYPH_FACE (glyph) == 0) | |
3039 | /* If GLYPH has no face code, use FACE. */ | |
3040 | facecode = face; | |
3041 | else if (FAST_GLYPH_FACE (glyph) == last_code) | |
3042 | /* If it's same as previous glyph, use same result. */ | |
3043 | facecode = last_merged; | |
3044 | else | |
3045 | { | |
3046 | /* Merge this glyph's face and remember the result. */ | |
3047 | last_code = FAST_GLYPH_FACE (glyph); | |
3048 | last_merged = facecode = compute_glyph_face (f, last_code, face); | |
3049 | } | |
b2a76982 | 3050 | |
4cdc65eb | 3051 | if (to >= s) |
e57bca5d | 3052 | *to = FAST_MAKE_GLYPH (c, facecode); |
4cdc65eb KH |
3053 | ++to; |
3054 | ++fp; | |
3055 | } | |
3056 | else | |
3057 | #endif | |
3058 | while (n--) | |
3059 | { | |
dedd1182 | 3060 | if (to >= s) *to = (INTEGERP (*fp) ? XFASTINT (*fp) : 0); |
4cdc65eb KH |
3061 | ++to; |
3062 | ++fp; | |
3063 | } | |
278feba9 | 3064 | return to; |
c581d710 RS |
3065 | } |
3066 | ||
278feba9 RS |
3067 | /* Correct a glyph by replacing its specified user-level face code |
3068 | with a displayable computed face code. */ | |
c581d710 | 3069 | |
278feba9 | 3070 | static GLYPH |
659a218f | 3071 | fix_glyph (f, glyph, cface) |
278feba9 RS |
3072 | FRAME_PTR f; |
3073 | GLYPH glyph; | |
659a218f | 3074 | int cface; |
c581d710 | 3075 | { |
87485d6f | 3076 | #ifdef HAVE_FACES |
659a218f KH |
3077 | if (! FRAME_TERMCAP_P (f)) |
3078 | { | |
3079 | if (FAST_GLYPH_FACE (glyph) != 0) | |
3080 | cface = compute_glyph_face (f, FAST_GLYPH_FACE (glyph), cface); | |
3081 | glyph = FAST_MAKE_GLYPH (FAST_GLYPH_CHAR (glyph), cface); | |
3082 | } | |
4cdc65eb KH |
3083 | #endif |
3084 | return glyph; | |
a2889657 JB |
3085 | } |
3086 | \f | |
12adba34 | 3087 | /* Return the column of position POS / POS_BYTE in window W's buffer. |
4a4c24d0 RS |
3088 | When used on the character at the beginning of a line, |
3089 | starting at column 0, this says how much to subtract from | |
3090 | the column position of any character in the line | |
3091 | to get its horizontal position on the screen. */ | |
12adba34 RS |
3092 | |
3093 | static int | |
3094 | pos_tab_offset (w, pos, pos_byte) | |
3095 | struct window *w; | |
3096 | register int pos, pos_byte; | |
3097 | { | |
3098 | int opoint = PT; | |
3099 | int opoint_byte = PT_BYTE; | |
3100 | int col; | |
3101 | int width = window_internal_width (w) - 1; | |
3102 | ||
3103 | if (pos == BEGV) | |
3104 | return MINI_WINDOW_P (w) ? -minibuf_prompt_width : 0; | |
3105 | ||
3106 | if (FETCH_BYTE (pos_byte - 1) == '\n') | |
3107 | return 0; | |
3108 | ||
3109 | TEMP_SET_PT_BOTH (pos, pos_byte); | |
3110 | col = current_column (); | |
3111 | TEMP_SET_PT_BOTH (opoint, opoint_byte); | |
3112 | ||
3113 | return col; | |
3114 | } | |
3115 | \f\f | |
3116 | /* Display one line of window W, starting at char position START in W's buffer. | |
3117 | START_BYTE is the corresponding byte position. | |
f4faa47c JB |
3118 | |
3119 | Display starting at horizontal position HPOS, expressed relative to | |
3120 | W's left edge. In situations where the text at START shouldn't | |
3121 | start at the left margin (i.e. when the window is hscrolled, or | |
3122 | we're continuing a line which left off in the midst of a | |
3123 | multi-column character), HPOS should be negative; we throw away | |
3124 | characters up 'til hpos = 0. So, HPOS must take hscrolling into | |
3125 | account. | |
a2889657 JB |
3126 | |
3127 | TABOFFSET is an offset for ostensible hpos, used in tab stop calculations. | |
3128 | ||
0f9c0ff0 RS |
3129 | OVSTR_DONE is the number of chars of overlay before/after strings |
3130 | at this position which have already been processed. | |
3131 | ||
f4faa47c JB |
3132 | Display on position VPOS on the frame. It is origin 0, relative to |
3133 | the top of the frame, not W. | |
a2889657 JB |
3134 | |
3135 | Returns a STRUCT POSITION giving character to start next line with | |
3136 | and where to display it, including a zero or negative hpos. | |
3137 | The vpos field is not really a vpos; it is 1 unless the line is continued */ | |
3138 | ||
3139 | struct position val_display_text_line; | |
3140 | ||
3141 | static struct position * | |
12adba34 | 3142 | display_text_line (w, start, start_byte, vpos, hpos, taboffset, ovstr_done) |
a2889657 JB |
3143 | struct window *w; |
3144 | int start; | |
3145 | int vpos; | |
3146 | int hpos; | |
3147 | int taboffset; | |
0f9c0ff0 | 3148 | int ovstr_done; |
a2889657 JB |
3149 | { |
3150 | register int pos = start; | |
12adba34 | 3151 | int pos_byte = start_byte; |
a2889657 JB |
3152 | register int c; |
3153 | register GLYPH *p1; | |
12adba34 | 3154 | int pause, limit_byte; |
a2889657 JB |
3155 | register unsigned char *p; |
3156 | GLYPH *endp; | |
d2f84654 | 3157 | register GLYPH *leftmargin; |
ca26e1c8 | 3158 | register GLYPH *p1prev; |
efc63ef0 | 3159 | register GLYPH *p1start; |
0d09d1e6 | 3160 | GLYPH *p1_wide_column_end = (GLYPH *) 0; |
12adba34 | 3161 | int prevpos, prevpos_byte; |
efc63ef0 | 3162 | int *charstart; |
44fa5b1e | 3163 | FRAME_PTR f = XFRAME (w->frame); |
a2889657 | 3164 | int tab_width = XINT (current_buffer->tab_width); |
265a9e55 | 3165 | int ctl_arrow = !NILP (current_buffer->ctl_arrow); |
b1d1124b | 3166 | int width = window_internal_width (w) - 1; |
a2889657 | 3167 | struct position val; |
12adba34 | 3168 | int lastpos, lastpos_byte; |
a2889657 | 3169 | int invis; |
642eefc6 RS |
3170 | int last_invis_skip = 0; |
3171 | Lisp_Object last_invis_prop; | |
a2889657 | 3172 | int hscroll = XINT (w->hscroll); |
d2f84654 RS |
3173 | int truncate = (hscroll |
3174 | || (truncate_partial_width_windows | |
73f194f1 | 3175 | && !WINDOW_FULL_WIDTH_P (w)) |
d2f84654 | 3176 | || !NILP (current_buffer->truncate_lines)); |
bd66d1ba | 3177 | |
409bb864 | 3178 | /* 1 if this buffer has a region to highlight. */ |
bd66d1ba | 3179 | int highlight_region |
2bf32c5d | 3180 | = (!NILP (Vtransient_mark_mode) && !NILP (current_buffer->mark_active) |
409bb864 | 3181 | && XMARKER (current_buffer->mark)->buffer != 0); |
bd66d1ba RS |
3182 | int region_beg, region_end; |
3183 | ||
e24c997d KH |
3184 | int selective = (INTEGERP (current_buffer->selective_display) |
3185 | ? XINT (current_buffer->selective_display) | |
3186 | : !NILP (current_buffer->selective_display) ? -1 : 0); | |
44fa5b1e | 3187 | register struct frame_glyphs *desired_glyphs = FRAME_DESIRED_GLYPHS (f); |
f908610f | 3188 | register struct Lisp_Char_Table *dp = window_display_table (w); |
68a37fa8 RS |
3189 | |
3190 | Lisp_Object default_invis_vector[3]; | |
642eefc6 RS |
3191 | /* Number of characters of ellipsis to display after an invisible line |
3192 | if it calls for an ellipsis. | |
3193 | Note that this value can be nonzero regardless of whether | |
3194 | selective display is enabled--you must check that separately. */ | |
a2889657 | 3195 | int selective_rlen |
642eefc6 | 3196 | = (dp && VECTORP (DISP_INVIS_VECTOR (dp)) |
68a37fa8 | 3197 | ? XVECTOR (DISP_INVIS_VECTOR (dp))->size |
642eefc6 | 3198 | : !NILP (current_buffer->selective_display_ellipses) ? 3 : 0); |
68a37fa8 RS |
3199 | /* This is the sequence of Lisp objects to display |
3200 | when there are invisible lines. */ | |
3201 | Lisp_Object *invis_vector_contents | |
e24c997d | 3202 | = (dp && VECTORP (DISP_INVIS_VECTOR (dp)) |
68a37fa8 RS |
3203 | ? XVECTOR (DISP_INVIS_VECTOR (dp))->contents |
3204 | : default_invis_vector); | |
3205 | ||
e24c997d | 3206 | GLYPH truncator = (dp == 0 || !INTEGERP (DISP_TRUNC_GLYPH (dp)) |
e57bca5d | 3207 | || !GLYPH_CHAR_VALID_P (XINT (DISP_TRUNC_GLYPH (dp))) |
278feba9 | 3208 | ? '$' : XINT (DISP_TRUNC_GLYPH (dp))); |
e24c997d | 3209 | GLYPH continuer = (dp == 0 || !INTEGERP (DISP_CONTINUE_GLYPH (dp)) |
e57bca5d | 3210 | || !GLYPH_CHAR_VALID_P (XINT (DISP_CONTINUE_GLYPH (dp))) |
278feba9 | 3211 | ? '\\' : XINT (DISP_CONTINUE_GLYPH (dp))); |
a2889657 | 3212 | |
1c9241f5 KH |
3213 | /* If 1, we must handle multibyte characters. */ |
3214 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); | |
3215 | /* Length of multibyte form of each character. */ | |
3216 | int len; | |
3217 | /* Glyphs generated should be set this bit mask if text must be | |
3218 | displayed from right to left. */ | |
3219 | GLYPH rev_dir_bit = (NILP (current_buffer->direction_reversed) | |
3220 | ? 0 : GLYPH_MASK_REV_DIR); | |
3221 | ||
31b24551 JB |
3222 | /* The next buffer location at which the face should change, due |
3223 | to overlays or text property changes. */ | |
3224 | int next_face_change; | |
3225 | ||
ca26e1c8 KH |
3226 | /* The next location where the `invisible' property changes, or an |
3227 | overlay starts or ends. */ | |
3228 | int next_boundary; | |
3229 | ||
31b24551 | 3230 | /* The face we're currently using. */ |
1c2250c2 | 3231 | int current_face = 0; |
efc63ef0 | 3232 | int i; |
31b24551 | 3233 | |
c2213350 | 3234 | XSETFASTINT (default_invis_vector[2], '.'); |
68a37fa8 RS |
3235 | default_invis_vector[0] = default_invis_vector[1] = default_invis_vector[2]; |
3236 | ||
73f194f1 | 3237 | get_display_line (f, vpos, WINDOW_LEFT_MARGIN (w)); |
54ff581a | 3238 | if (tab_width <= 0 || tab_width > 1000) tab_width = 8; |
a2889657 | 3239 | |
bd66d1ba | 3240 | /* Show where to highlight the region. */ |
409bb864 | 3241 | if (highlight_region |
fba9ce76 RS |
3242 | /* Maybe highlight only in selected window. */ |
3243 | && (highlight_nonselected_windows | |
409bb864 KH |
3244 | || w == XWINDOW (selected_window) |
3245 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
3246 | && w == XWINDOW (Vminibuf_scroll_window)))) | |
bd66d1ba RS |
3247 | { |
3248 | region_beg = marker_position (current_buffer->mark); | |
3249 | if (PT < region_beg) | |
3250 | { | |
3251 | region_end = region_beg; | |
3252 | region_beg = PT; | |
3253 | } | |
3254 | else | |
3255 | region_end = PT; | |
3256 | w->region_showing = Qt; | |
3257 | } | |
3258 | else | |
3ee4159a RS |
3259 | { |
3260 | region_beg = region_end = -1; | |
3261 | w->region_showing = Qnil; | |
3262 | } | |
bd66d1ba | 3263 | |
f4faa47c | 3264 | if (MINI_WINDOW_P (w) |
ca26e1c8 | 3265 | && start == BEG |
a2889657 JB |
3266 | && vpos == XFASTINT (w->top)) |
3267 | { | |
8c5b6a0a | 3268 | if (! NILP (minibuf_prompt)) |
f7b4b63a | 3269 | { |
12a274bf RS |
3270 | int old_width = minibuf_prompt_width; |
3271 | ||
f7b4b63a | 3272 | minibuf_prompt_width |
8c5b6a0a | 3273 | = (display_string (w, vpos, XSTRING (minibuf_prompt)->data, |
fc932ac6 | 3274 | STRING_BYTES (XSTRING (minibuf_prompt)), |
377dbd97 | 3275 | hpos + WINDOW_LEFT_MARGIN (w), |
ce006f69 RS |
3276 | /* Display a space if we truncate. */ |
3277 | ' ', | |
3278 | 1, -1, | |
3279 | /* Truncate the prompt a little before the | |
3280 | margin, so user input can at least start | |
3281 | on the first line. */ | |
8bb6ca14 | 3282 | (XFASTINT (w->width) > 10 |
a3788d53 | 3283 | ? XFASTINT (w->width) - 4 : -1), |
0a9dc68b | 3284 | STRING_MULTIBYTE (minibuf_prompt)) |
377dbd97 | 3285 | - hpos - WINDOW_LEFT_MARGIN (w)); |
f7b4b63a | 3286 | hpos += minibuf_prompt_width; |
12a274bf | 3287 | taboffset -= minibuf_prompt_width - old_width; |
f7b4b63a KH |
3288 | } |
3289 | else | |
3290 | minibuf_prompt_width = 0; | |
a2889657 JB |
3291 | } |
3292 | ||
f4faa47c JB |
3293 | /* If we're hscrolled at all, use compute_motion to skip over any |
3294 | text off the left edge of the window. compute_motion may know | |
3295 | tricks to do this faster than we can. */ | |
3296 | if (hpos < 0) | |
3297 | { | |
3298 | struct position *left_edge | |
ca26e1c8 KH |
3299 | = compute_motion (pos, vpos, hpos, 0, |
3300 | ZV, vpos, 0, | |
f4faa47c JB |
3301 | width, hscroll, taboffset, w); |
3302 | ||
3303 | /* Retrieve the buffer position and column provided by | |
3304 | compute_motion. We can't assume that the column will be | |
3305 | zero, because you may have multi-column characters crossing | |
3306 | the left margin. | |
3307 | ||
3308 | compute_motion may have moved us past the screen position we | |
3309 | requested, if we hit a multi-column character, or the end of | |
3310 | the line. If so, back up. */ | |
3311 | if (left_edge->vpos > vpos | |
3312 | || left_edge->hpos > 0) | |
3313 | { | |
93fdf93b | 3314 | pos = left_edge->bufpos; |
0d09d1e6 | 3315 | pos_byte = left_edge->bytepos; |
93fdf93b | 3316 | DEC_BOTH (pos, pos_byte); |
f4faa47c JB |
3317 | hpos = left_edge->prevhpos; |
3318 | } | |
3319 | else | |
3320 | { | |
3321 | pos = left_edge->bufpos; | |
12adba34 | 3322 | pos_byte = left_edge->bytepos; |
f4faa47c JB |
3323 | hpos = left_edge->hpos; |
3324 | } | |
3325 | } | |
3326 | ||
377dbd97 RS |
3327 | hpos += WINDOW_LEFT_MARGIN (w); |
3328 | ||
f4faa47c | 3329 | desired_glyphs->bufp[vpos] = start; |
a2889657 | 3330 | p1 = desired_glyphs->glyphs[vpos] + hpos; |
efc63ef0 RS |
3331 | p1start = p1; |
3332 | charstart = desired_glyphs->charstarts[vpos] + hpos; | |
3333 | /* In case we don't ever write anything into it... */ | |
73f194f1 RS |
3334 | desired_glyphs->charstarts[vpos][WINDOW_LEFT_MARGIN (w)] = -1; |
3335 | leftmargin = desired_glyphs->glyphs[vpos] + WINDOW_LEFT_MARGIN (w); | |
d2f84654 | 3336 | endp = leftmargin + width; |
a2889657 | 3337 | |
1c2250c2 JB |
3338 | /* Arrange the overlays nicely for our purposes. Usually, we call |
3339 | display_text_line on only one line at a time, in which case this | |
3340 | can't really hurt too much, or we call it on lines which appear | |
3341 | one after another in the buffer, in which case all calls to | |
3342 | recenter_overlay_lists but the first will be pretty cheap. */ | |
3343 | recenter_overlay_lists (current_buffer, pos); | |
3344 | ||
a2889657 JB |
3345 | /* Loop generating characters. |
3346 | Stop at end of buffer, before newline, | |
31b24551 JB |
3347 | if reach or pass continuation column, |
3348 | or at face change. */ | |
a2889657 | 3349 | pause = pos; |
12adba34 | 3350 | limit_byte = pos_byte; |
31b24551 | 3351 | next_face_change = pos; |
ca26e1c8 KH |
3352 | next_boundary = pos; |
3353 | p1prev = p1; | |
3354 | prevpos = pos; | |
12adba34 | 3355 | prevpos_byte = pos_byte; |
1fca3fae RS |
3356 | |
3357 | /* If the window is hscrolled and point is in the invisible part of the | |
3358 | current line beyond the left margin we can record the cursor location | |
3359 | right away. */ | |
3360 | if (hscroll && start <= PT && PT < pos && cursor_vpos < 0) | |
3361 | { | |
3362 | cursor_vpos = vpos; | |
3363 | cursor_hpos = p1 - leftmargin; | |
3364 | } | |
3365 | ||
2384c010 | 3366 | while (p1 < endp) |
a2889657 | 3367 | { |
31b24551 | 3368 | if (pos >= pause) |
a2889657 | 3369 | { |
67481ae5 RS |
3370 | int e_t_h; |
3371 | ||
ca26e1c8 | 3372 | while (pos == next_boundary) |
a2889657 | 3373 | { |
ca26e1c8 KH |
3374 | Lisp_Object position, limit, prop, ww; |
3375 | ||
3376 | /* Display the overlay strings here, unless we're at ZV | |
3377 | and have already displayed the appropriate strings | |
3378 | on an earlier line. */ | |
3379 | if (pos < ZV || !zv_strings_seen++) | |
3380 | { | |
3381 | int ovlen; | |
b4222ffa | 3382 | unsigned char *ovstr; |
ca26e1c8 | 3383 | ovlen = overlay_strings (pos, w, &ovstr); |
0f9c0ff0 RS |
3384 | |
3385 | if (ovlen > 0) | |
ca26e1c8 | 3386 | { |
0f9c0ff0 RS |
3387 | /* Skip the ones we did in a previous line. */ |
3388 | ovstr += ovstr_done; | |
3389 | ovlen -= ovstr_done; | |
3390 | ||
1c9241f5 | 3391 | while (ovlen > 0) |
0f9c0ff0 | 3392 | { |
1c9241f5 KH |
3393 | int charset, cols; |
3394 | GLYPH g; | |
3395 | ||
3396 | if (multibyte) | |
3397 | { | |
3398 | c = STRING_CHAR_AND_LENGTH (ovstr, ovlen, len); | |
3399 | ovstr += len, ovlen -= len, ovstr_done += len; | |
3400 | charset = CHAR_CHARSET (c); | |
3401 | cols = (charset == CHARSET_COMPOSITION | |
3402 | ? cmpchar_table[COMPOSITE_CHAR_ID (c)]->width | |
3403 | : CHARSET_WIDTH (charset)); | |
3404 | } | |
3405 | else | |
3406 | { | |
3407 | c = *ovstr++, ovlen--, ovstr_done++; | |
3408 | cols = 1; | |
3409 | } | |
3410 | g = MAKE_GLYPH (f, c, current_face) | rev_dir_bit; | |
3411 | while (cols-- > 0) | |
3412 | { | |
3413 | if (p1 >= leftmargin && p1 < endp) | |
3414 | *p1 = g, g |= GLYPH_MASK_PADDING; | |
3415 | p1++; | |
3416 | } | |
0f9c0ff0 RS |
3417 | } |
3418 | /* If we did all the overlay strings | |
3419 | and we have room for text, clear ovstr_done | |
3420 | just for neatness' sake. */ | |
3421 | if (ovlen == 0 && p1 < endp) | |
3422 | ovstr_done = 0; | |
ca26e1c8 KH |
3423 | } |
3424 | } | |
3425 | ||
3426 | /* Did we reach point? Record the cursor location. */ | |
3427 | if (pos == PT && cursor_vpos < 0) | |
3428 | { | |
3429 | cursor_vpos = vpos; | |
3430 | cursor_hpos = p1 - leftmargin; | |
3431 | } | |
3432 | ||
3433 | if (pos >= ZV) | |
3434 | break; | |
a2889657 | 3435 | |
c2213350 | 3436 | XSETFASTINT (position, pos); |
ca26e1c8 KH |
3437 | limit = Fnext_overlay_change (position); |
3438 | #ifdef USE_TEXT_PROPERTIES | |
dfabd9a0 RS |
3439 | /* This is just an estimate to give reasonable |
3440 | performance; nothing should go wrong if it is too small. */ | |
fe3d6921 | 3441 | if (XFASTINT (limit) > pos + 50) |
1c9241f5 KH |
3442 | { |
3443 | int limitpos = pos + 50; | |
1c9241f5 KH |
3444 | XSETFASTINT (limit, limitpos); |
3445 | } | |
ca26e1c8 KH |
3446 | limit = Fnext_single_property_change (position, Qinvisible, |
3447 | Fcurrent_buffer (), limit); | |
3448 | #endif | |
3449 | next_boundary = XFASTINT (limit); | |
3450 | /* if the `invisible' property is set, we can skip to | |
3451 | the next property change. */ | |
3452 | XSETWINDOW (ww, w); | |
3453 | prop = Fget_char_property (position, Qinvisible, ww); | |
642eefc6 | 3454 | if (TEXT_PROP_MEANS_INVISIBLE (prop)) |
dfabd9a0 | 3455 | { |
ca26e1c8 | 3456 | if (pos < PT && next_boundary >= PT) |
dfabd9a0 RS |
3457 | { |
3458 | cursor_vpos = vpos; | |
d2f84654 | 3459 | cursor_hpos = p1 - leftmargin; |
dfabd9a0 | 3460 | } |
ca26e1c8 | 3461 | pos = next_boundary; |
f6e7abc1 | 3462 | pos_byte = CHAR_TO_BYTE (pos); |
642eefc6 RS |
3463 | last_invis_skip = pos; |
3464 | last_invis_prop = prop; | |
dfabd9a0 | 3465 | } |
b0a0fbda | 3466 | } |
ca26e1c8 KH |
3467 | |
3468 | /* Did we reach point? Record the cursor location. */ | |
3469 | if (pos == PT && cursor_vpos < 0) | |
3470 | { | |
3471 | cursor_vpos = vpos; | |
3472 | cursor_hpos = p1 - leftmargin; | |
3473 | } | |
3474 | ||
3475 | /* Did we hit the end of the visible region of the buffer? | |
3476 | Stop here. */ | |
3477 | if (pos >= ZV) | |
eff87c2c RS |
3478 | { |
3479 | /* Update charstarts for the end of this line. */ | |
3480 | /* Do nothing if off the left edge or at the right edge. */ | |
3481 | if (p1 >= leftmargin && p1 + 1 != endp) | |
3482 | { | |
3483 | int *p2x = &charstart[(p1 < leftmargin | |
3484 | ? leftmargin : p1) | |
3485 | - p1start]; | |
3486 | *p2x++ = pos; | |
3487 | } | |
3488 | break; | |
3489 | } | |
b0a0fbda | 3490 | |
67481ae5 RS |
3491 | /* Figure out where (if at all) the |
3492 | redisplay_end_trigger-hook should run. */ | |
f6fd109b RS |
3493 | if (MARKERP (w->redisplay_end_trigger) |
3494 | && XMARKER (w->redisplay_end_trigger)->buffer != 0) | |
d3413a53 RS |
3495 | e_t_h = marker_position (w->redisplay_end_trigger); |
3496 | else if (INTEGERP (w->redisplay_end_trigger)) | |
3497 | e_t_h = XINT (w->redisplay_end_trigger); | |
67481ae5 RS |
3498 | else |
3499 | e_t_h = ZV; | |
3500 | ||
3501 | /* If we've gone past the place to run a hook, | |
3502 | run the hook. */ | |
3503 | if (pos >= e_t_h && e_t_h != ZV) | |
3504 | { | |
e0bfbde6 RS |
3505 | Lisp_Object args[3]; |
3506 | ||
3507 | args[0] = Qredisplay_end_trigger_functions; | |
3508 | XSETWINDOW (args[1], w); | |
3509 | XSETINT (args[2], e_t_h); | |
e0bfbde6 | 3510 | |
9c49d3d7 KH |
3511 | /* Since we are *trying* to run these functions, |
3512 | don't try to run them again, even if they get an error. */ | |
d3413a53 | 3513 | w->redisplay_end_trigger = Qnil; |
9c49d3d7 KH |
3514 | Frun_hook_with_args (3, args); |
3515 | ||
67481ae5 | 3516 | e_t_h = ZV; |
f6fd109b RS |
3517 | /* Notice if it changed the face of this character. */ |
3518 | next_face_change = pos; | |
67481ae5 RS |
3519 | } |
3520 | ||
f6fd109b RS |
3521 | #ifdef HAVE_FACES |
3522 | /* Did we hit a face change? Figure out what face we should | |
3523 | use now. We also hit this the first time through the | |
3524 | loop, to see what face we should start with. */ | |
ab6ce60e RS |
3525 | if (pos >= next_face_change |
3526 | && (FRAME_WINDOW_P (f) || FRAME_MSDOS_P (f))) | |
1c9241f5 KH |
3527 | { |
3528 | int limit = pos + 50; | |
3529 | ||
1c9241f5 KH |
3530 | current_face = compute_char_face (f, w, pos, |
3531 | region_beg, region_end, | |
3532 | &next_face_change, limit, 0); | |
3533 | } | |
f6fd109b RS |
3534 | #endif |
3535 | ||
67481ae5 RS |
3536 | /* Compute the next place we need to stop |
3537 | and do something special; set PAUSE. */ | |
3538 | ||
ca26e1c8 | 3539 | pause = ZV; |
1c2250c2 | 3540 | |
ca26e1c8 KH |
3541 | if (pos < next_boundary && next_boundary < pause) |
3542 | pause = next_boundary; | |
1c2250c2 JB |
3543 | if (pos < next_face_change && next_face_change < pause) |
3544 | pause = next_face_change; | |
3545 | ||
67481ae5 RS |
3546 | if (e_t_h < pause) |
3547 | pause = e_t_h; | |
3548 | ||
31b24551 JB |
3549 | /* Wouldn't you hate to read the next line to someone over |
3550 | the phone? */ | |
ae3b1442 KH |
3551 | if (pos < PT && PT < pause) |
3552 | pause = PT; | |
a2889657 JB |
3553 | if (pos < GPT && GPT < pause) |
3554 | pause = GPT; | |
3555 | ||
12adba34 RS |
3556 | /* LIMIT_BYTE is not the same place in the buffer as PAUSE. |
3557 | It is a limit on valid characters. | |
3558 | We use it to bound STRING_CHAR_AND_LENGTH. */ | |
3559 | limit_byte = ZV_BYTE; | |
3560 | if (pos < GPT && GPT_BYTE < limit_byte) | |
3561 | limit_byte = GPT_BYTE; | |
3562 | ||
3563 | { | |
3564 | int temp = CHAR_TO_BYTE (pos); | |
3565 | p = BYTE_POS_ADDR (temp); | |
3566 | } | |
a2889657 | 3567 | } |
ca26e1c8 | 3568 | |
ca26e1c8 KH |
3569 | if (p1 >= endp) |
3570 | break; | |
3571 | ||
3572 | p1prev = p1; | |
0d09d1e6 | 3573 | p1_wide_column_end = (GLYPH *) 0; |
ca26e1c8 | 3574 | |
1c9241f5 | 3575 | if (multibyte) |
12adba34 | 3576 | c = STRING_CHAR_AND_LENGTH (p, limit_byte - pos_byte, len), p += len; |
1c9241f5 KH |
3577 | else |
3578 | c = *p++, len = 1; | |
376b0e59 RS |
3579 | /* Let a display table override all standard display methods. */ |
3580 | if (dp != 0 && VECTORP (DISP_CHAR_VECTOR (dp, c))) | |
3581 | { | |
3582 | p1 = copy_part_of_rope (f, p1, leftmargin, | |
3583 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->contents, | |
3584 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->size, | |
1c9241f5 | 3585 | current_face, rev_dir_bit); |
376b0e59 RS |
3586 | } |
3587 | else if (c >= 040 && c < 0177) | |
a2889657 | 3588 | { |
d2f84654 | 3589 | if (p1 >= leftmargin) |
1c9241f5 | 3590 | *p1 = MAKE_GLYPH (f, c, current_face) | rev_dir_bit; |
a2889657 JB |
3591 | p1++; |
3592 | } | |
3593 | else if (c == '\n') | |
3594 | { | |
1842fc1a RS |
3595 | #if 0 |
3596 | /* Same as p1prev, but after the invis_vector_contents text | |
3597 | (if we have that on this line). */ | |
3598 | GLYPH *p1prev_modified; | |
3599 | #endif | |
3600 | ||
a2889657 | 3601 | invis = 0; |
642eefc6 RS |
3602 | if (last_invis_skip == pos |
3603 | && TEXT_PROP_MEANS_INVISIBLE_WITH_ELLIPSIS (last_invis_prop)) | |
3604 | invis = 1; | |
ca26e1c8 | 3605 | while (pos + 1 < ZV |
a2889657 | 3606 | && selective > 0 |
12adba34 | 3607 | && indented_beyond_p (pos + 1, pos_byte + 1, selective)) |
a2889657 | 3608 | { |
12adba34 RS |
3609 | int opoint = PT, opoint_byte = PT_BYTE; |
3610 | ||
a2889657 | 3611 | invis = 1; |
9ce37c9d | 3612 | INC_BOTH (pos, pos_byte); |
12adba34 | 3613 | scan_newline (pos, pos_byte, ZV, ZV_BYTE, 1, 1); |
b5231eda | 3614 | pos = PT, pos_byte = PT_BYTE; |
12adba34 RS |
3615 | if (FETCH_BYTE (pos_byte - 1) == '\n') |
3616 | { | |
3617 | pos--; | |
3618 | pos_byte--; | |
3619 | } | |
3620 | SET_PT_BOTH (opoint, opoint_byte); | |
a2889657 | 3621 | } |
d2f84654 | 3622 | if (invis && selective_rlen > 0 && p1 >= leftmargin) |
a2889657 | 3623 | { |
1842fc1a RS |
3624 | #if 0 |
3625 | GLYPH *cs, *csend; | |
3626 | ||
3627 | cs = charstart + (p1 - p1start); | |
3628 | #endif | |
3629 | ||
a2889657 | 3630 | p1 += selective_rlen; |
d2f84654 | 3631 | if (p1 - leftmargin > width) |
a2889657 | 3632 | p1 = endp; |
1842fc1a RS |
3633 | |
3634 | #if 0 /* This needs more work; charstarts needs to record | |
3635 | both whether a position ho;ds an ellipsis character | |
3636 | and what buffer position it corresponds to. */ | |
3637 | csend = charstart + (p1 - p1start); | |
3638 | while (cs != csend) | |
3639 | *cs++ = -2; | |
3640 | /* The idea is to use p1prev_modified instead of p1prev | |
3641 | in the loop below over p2x. */ | |
3642 | p1prev_modified = p1; | |
3643 | #endif | |
3644 | ||
278feba9 | 3645 | copy_part_of_rope (f, p1prev, p1prev, invis_vector_contents, |
1c9241f5 | 3646 | (p1 - p1prev), current_face, rev_dir_bit); |
a2889657 | 3647 | } |
545e04f6 KH |
3648 | |
3649 | /* Update charstarts for the newline that ended this line. */ | |
3650 | /* Do nothing here for a char that's entirely off the left edge | |
3651 | or if it starts at the right edge. */ | |
3652 | if (p1 >= leftmargin && p1prev != endp) | |
3653 | { | |
3654 | /* Store the newline's position into charstarts | |
3655 | for the column where the newline starts. | |
3656 | Store -1 for the rest of the glyphs it occupies. */ | |
3657 | int *p2x = &charstart[(p1prev < leftmargin | |
3658 | ? leftmargin : p1prev) | |
3659 | - p1start]; | |
3660 | int *p2 = &charstart[(p1 < endp ? p1 : endp) - p1start]; | |
3661 | ||
3662 | *p2x++ = pos; | |
3663 | while (p2x < p2) | |
3664 | *p2x++ = -1; | |
3665 | } | |
1842fc1a RS |
3666 | #ifdef HAVE_FACES |
3667 | /* Draw the face of the newline character as extending all the | |
3668 | way to the end of the frame line. */ | |
3669 | if (current_face) | |
3670 | { | |
3671 | if (p1 < leftmargin) | |
3672 | p1 = leftmargin; | |
3673 | while (p1 < endp) | |
3674 | *p1++ = FAST_MAKE_GLYPH (' ', current_face) | rev_dir_bit; | |
3675 | } | |
3676 | #endif | |
545e04f6 | 3677 | |
68a37fa8 | 3678 | break; |
a2889657 JB |
3679 | } |
3680 | else if (c == '\t') | |
3681 | { | |
3682 | do | |
3683 | { | |
d2f84654 | 3684 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 | 3685 | *p1 = MAKE_GLYPH (f, ' ', current_face) | rev_dir_bit; |
a2889657 JB |
3686 | p1++; |
3687 | } | |
d2f84654 | 3688 | while ((p1 - leftmargin + taboffset + hscroll - (hscroll > 0)) |
a2889657 JB |
3689 | % tab_width); |
3690 | } | |
6e8290aa | 3691 | else if (c == Ctl ('M') && selective == -1) |
a2889657 | 3692 | { |
12adba34 RS |
3693 | int opoint = PT, opoint_byte = PT_BYTE; |
3694 | scan_newline (pos, pos_byte, ZV, ZV_BYTE, 1, 1); | |
3695 | pos = PT, pos_byte = PT_BYTE; | |
3696 | SET_PT_BOTH (opoint, opoint_byte); | |
3697 | ||
3698 | if (FETCH_BYTE (pos_byte - 1) == '\n') | |
3699 | pos--, pos_byte--; | |
a2889657 JB |
3700 | if (selective_rlen > 0) |
3701 | { | |
3702 | p1 += selective_rlen; | |
d2f84654 | 3703 | if (p1 - leftmargin > width) |
a2889657 | 3704 | p1 = endp; |
278feba9 | 3705 | copy_part_of_rope (f, p1prev, p1prev, invis_vector_contents, |
1c9241f5 | 3706 | (p1 - p1prev), current_face, rev_dir_bit); |
a2889657 | 3707 | } |
87485d6f | 3708 | #ifdef HAVE_FACES |
3c5c35c5 JB |
3709 | /* Draw the face of the newline character as extending all the |
3710 | way to the end of the frame line. */ | |
3711 | if (current_face) | |
1105ff20 KH |
3712 | { |
3713 | if (p1 < leftmargin) | |
3714 | p1 = leftmargin; | |
3715 | while (p1 < endp) | |
1c9241f5 | 3716 | *p1++ = FAST_MAKE_GLYPH (' ', current_face) | rev_dir_bit; |
1105ff20 | 3717 | } |
3c5c35c5 | 3718 | #endif |
545e04f6 KH |
3719 | |
3720 | /* Update charstarts for the ^M that ended this line. */ | |
3721 | /* Do nothing here for a char that's entirely off the left edge | |
3722 | or if it starts at the right edge. */ | |
3723 | if (p1 >= leftmargin && p1prev != endp) | |
3724 | { | |
3725 | /* Store the newline's position into charstarts | |
3726 | for the column where the newline starts. | |
3727 | Store -1 for the rest of the glyphs it occupies. */ | |
3728 | int *p2x = &charstart[(p1prev < leftmargin | |
3729 | ? leftmargin : p1prev) | |
3730 | - p1start]; | |
3731 | int *p2 = &charstart[(p1 < endp ? p1 : endp) - p1start]; | |
3732 | ||
3733 | *p2x++ = pos; | |
3734 | while (p2x < p2) | |
3735 | *p2x++ = -1; | |
3736 | } | |
68a37fa8 | 3737 | break; |
a2889657 | 3738 | } |
a2889657 JB |
3739 | else if (c < 0200 && ctl_arrow) |
3740 | { | |
d2f84654 | 3741 | if (p1 >= leftmargin) |
e57bca5d KH |
3742 | *p1 = (fix_glyph |
3743 | (f, (dp && INTEGERP (DISP_CTRL_GLYPH (dp)) | |
3744 | && GLYPH_CHAR_VALID_P (XINT (DISP_CTRL_GLYPH (dp))) | |
3745 | ? XINT (DISP_CTRL_GLYPH (dp)) : '^'), | |
3746 | current_face) | |
1c9241f5 | 3747 | | rev_dir_bit); |
a2889657 | 3748 | p1++; |
d2f84654 | 3749 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 | 3750 | *p1 = MAKE_GLYPH (f, c ^ 0100, current_face) | rev_dir_bit; |
a2889657 JB |
3751 | p1++; |
3752 | } | |
1c9241f5 KH |
3753 | else |
3754 | { | |
a2c983d5 KH |
3755 | /* C is a multibyte character or a character to be displayed |
3756 | by octral form. */ | |
3757 | int remaining_bytes = len; | |
1c9241f5 | 3758 | |
a2c983d5 | 3759 | if (c >= 0400) |
1c9241f5 | 3760 | { |
a2c983d5 KH |
3761 | /* C is a multibyte character. */ |
3762 | int charset = CHAR_CHARSET (c); | |
3763 | int columns = (charset == CHARSET_COMPOSITION | |
3764 | ? cmpchar_table[COMPOSITE_CHAR_ID (c)]->width | |
3765 | : CHARSET_WIDTH (charset)); | |
3766 | GLYPH g = MAKE_GLYPH (f, c, current_face) | rev_dir_bit; | |
3767 | ||
3768 | while (columns--) | |
3769 | { | |
3770 | if (p1 >= leftmargin && p1 < endp) | |
3771 | *p1 = g, g |= GLYPH_MASK_PADDING; | |
3772 | p1++; | |
3773 | } | |
3774 | p1_wide_column_end = p1; | |
3775 | remaining_bytes -= CHARSET_BYTES (charset); | |
1c9241f5 | 3776 | } |
0d09d1e6 | 3777 | |
a2c983d5 | 3778 | while (remaining_bytes > 0) |
0d09d1e6 | 3779 | { |
a2c983d5 KH |
3780 | c = *(p - remaining_bytes--); |
3781 | ||
3782 | if (p1 >= leftmargin && p1 < endp) | |
3783 | *p1 = (fix_glyph | |
3784 | (f, | |
3785 | (dp && INTEGERP (DISP_ESCAPE_GLYPH (dp)) | |
3786 | && GLYPH_CHAR_VALID_P (XINT (DISP_ESCAPE_GLYPH (dp))) | |
3787 | ? XINT (DISP_ESCAPE_GLYPH (dp)) : '\\'), | |
3788 | current_face) | |
3789 | | rev_dir_bit); | |
3790 | p1++; | |
3791 | if (p1 >= leftmargin && p1 < endp) | |
3792 | *p1 = (MAKE_GLYPH (f, (c >> 6) + '0', current_face) | |
3793 | | rev_dir_bit); | |
3794 | p1++; | |
3795 | if (p1 >= leftmargin && p1 < endp) | |
3796 | *p1 = (MAKE_GLYPH (f, (7 & (c >> 3)) + '0', current_face) | |
3797 | | rev_dir_bit); | |
3798 | p1++; | |
3799 | if (p1 >= leftmargin && p1 < endp) | |
3800 | *p1 = (MAKE_GLYPH (f, (7 & c) + '0', current_face) | |
3801 | | rev_dir_bit); | |
3802 | p1++; | |
0d09d1e6 | 3803 | } |
1c9241f5 | 3804 | } |
31b24551 | 3805 | |
ca26e1c8 | 3806 | prevpos = pos; |
12adba34 RS |
3807 | prevpos_byte = pos_byte; |
3808 | pos++; | |
3809 | pos_byte += len; | |
545e04f6 KH |
3810 | |
3811 | /* Update charstarts for the character just output. */ | |
3812 | ||
3813 | /* Do nothing here for a char that's entirely off the left edge. */ | |
3814 | if (p1 >= leftmargin) | |
3815 | { | |
3816 | /* Store the char's position into charstarts | |
3817 | for the first glyph occupied by this char. | |
3818 | Store -1 for the rest of the glyphs it occupies. */ | |
3819 | if (p1 != p1prev) | |
3820 | { | |
3821 | int *p2x = &charstart[(p1prev < leftmargin | |
3822 | ? leftmargin : p1prev) | |
3823 | - p1start]; | |
3824 | int *p2 = &charstart[(p1 < endp ? p1 : endp) - p1start]; | |
3825 | ||
3826 | if (p2x < p2) | |
3827 | *p2x++ = prevpos; | |
3828 | while (p2x < p2) | |
3829 | *p2x++ = -1; | |
3830 | } | |
3831 | } | |
a2889657 JB |
3832 | } |
3833 | ||
3834 | val.hpos = - XINT (w->hscroll); | |
3835 | if (val.hpos) | |
3836 | val.hpos++; | |
3837 | ||
3838 | val.vpos = 1; | |
3839 | ||
3840 | lastpos = pos; | |
12adba34 | 3841 | lastpos_byte = pos_byte; |
a2889657 | 3842 | |
efc63ef0 RS |
3843 | /* Store 0 in this charstart line for the positions where |
3844 | there is no character. But do leave what was recorded | |
3845 | for the character that ended the line. */ | |
85bcef6c RS |
3846 | /* Add 1 in the endtest to compensate for the fact that ENDP was |
3847 | made from WIDTH, which is 1 less than the window's actual | |
3848 | internal width. */ | |
a007eef6 RS |
3849 | i = p1 - p1start + 1; |
3850 | if (p1 < leftmargin) | |
3851 | i += leftmargin - p1; | |
3852 | for (; i < endp - p1start + 1; i++) | |
efc63ef0 RS |
3853 | charstart[i] = 0; |
3854 | ||
a2889657 JB |
3855 | /* Handle continuation in middle of a character */ |
3856 | /* by backing up over it */ | |
3857 | if (p1 > endp) | |
3858 | { | |
5fcbb24d JB |
3859 | /* Don't back up if we never actually displayed any text. |
3860 | This occurs when the minibuffer prompt takes up the whole line. */ | |
3861 | if (p1prev) | |
3862 | { | |
1c9241f5 KH |
3863 | /* Start the next line with that same character whose |
3864 | character code is C and the length of multi-byte form is | |
3865 | LEN. */ | |
3866 | pos = prevpos; | |
12adba34 | 3867 | pos_byte = prevpos_byte; |
1c9241f5 | 3868 | |
0d09d1e6 KH |
3869 | if (p1_wide_column_end < endp) |
3870 | /* As ENDP is not in the middle of wide-column character, | |
3871 | we can break the line at ENDP and start from the middle | |
3872 | column in the next line. So, adjust VAL.HPOS to skip | |
3873 | the columns output on this line. */ | |
1c9241f5 KH |
3874 | val.hpos += p1prev - endp; |
3875 | else | |
3876 | { | |
0d09d1e6 KH |
3877 | /* We displayed a wide-column character at around ENDP. |
3878 | Since we can't broke it in the middle, the whole | |
3879 | character should be driven into the next line. */ | |
1c9241f5 KH |
3880 | /* As the result, the actual columns occupied by the |
3881 | text on this line is less than WIDTH. VAL.TAB_OFFSET | |
3882 | must be adjusted. */ | |
3883 | taboffset = taboffset + (p1prev - endp); | |
3884 | /* Let's fill unused columns with TRUNCATOR or CONTINUER. */ | |
3885 | { | |
3886 | GLYPH g = fix_glyph (f, truncate ? truncator : continuer, 0); | |
3887 | while (p1prev < endp) | |
3888 | *p1prev++ = g; | |
3889 | } | |
3890 | /* If POINT is at POS, cursor should not on this line. */ | |
3891 | lastpos = pos; | |
12adba34 | 3892 | lastpos_byte = pos_byte; |
1c9241f5 KH |
3893 | if (PT == pos) |
3894 | cursor_vpos = -1; | |
3895 | } | |
5fcbb24d JB |
3896 | } |
3897 | ||
a2889657 JB |
3898 | /* Keep in this line everything up to the continuation column. */ |
3899 | p1 = endp; | |
3900 | } | |
3901 | ||
3902 | /* Finish deciding which character to start the next line on, | |
3903 | and what hpos to start it at. | |
3904 | Also set `lastpos' to the last position which counts as "on this line" | |
3905 | for cursor-positioning. */ | |
3906 | ||
3907 | if (pos < ZV) | |
3908 | { | |
12adba34 | 3909 | if (FETCH_BYTE (pos_byte) == '\n') |
dd5f6267 | 3910 | { |
12adba34 RS |
3911 | int opoint = PT, opoint_byte = PT_BYTE; |
3912 | ||
dd5f6267 | 3913 | /* If stopped due to a newline, start next line after it */ |
12adba34 RS |
3914 | SET_PT_BOTH (pos + 1, pos_byte + 1); |
3915 | ||
1c9241f5 | 3916 | val.tab_offset = 0; |
dd5f6267 KH |
3917 | /* Check again for hidden lines, in case the newline occurred exactly |
3918 | at the right margin. */ | |
12adba34 RS |
3919 | while (PT < ZV && selective > 0 |
3920 | && indented_beyond_p (PT, PT_BYTE, selective)) | |
3921 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 1); | |
3922 | ||
3923 | pos = PT, pos_byte = PT_BYTE; | |
3924 | SET_PT_BOTH (opoint, opoint_byte); | |
dd5f6267 | 3925 | } |
a2889657 JB |
3926 | else |
3927 | /* Stopped due to right margin of window */ | |
3928 | { | |
3929 | if (truncate) | |
3930 | { | |
12adba34 RS |
3931 | int opoint = PT, opoint_byte = PT_BYTE; |
3932 | ||
3933 | SET_PT_BOTH (pos, pos_byte); | |
278feba9 | 3934 | *p1++ = fix_glyph (f, truncator, 0); |
a2889657 JB |
3935 | /* Truncating => start next line after next newline, |
3936 | and point is on this line if it is before the newline, | |
3937 | and skip none of first char of next line */ | |
dd5f6267 | 3938 | do |
12adba34 RS |
3939 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 1); |
3940 | while (PT < ZV && selective > 0 | |
3941 | && indented_beyond_p (PT, PT_BYTE, selective)); | |
3942 | pos = PT, pos_byte = PT_BYTE; | |
a2889657 | 3943 | val.hpos = XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0; |
12adba34 | 3944 | SET_PT_BOTH (opoint, opoint_byte); |
a2889657 | 3945 | |
12adba34 RS |
3946 | lastpos = pos - (FETCH_BYTE (pos_byte - 1) == '\n'); |
3947 | lastpos_byte = CHAR_TO_BYTE (lastpos); | |
1c9241f5 | 3948 | val.tab_offset = 0; |
a2889657 JB |
3949 | } |
3950 | else | |
3951 | { | |
278feba9 | 3952 | *p1++ = fix_glyph (f, continuer, 0); |
a2889657 | 3953 | val.vpos = 0; |
93fdf93b | 3954 | DEC_BOTH (lastpos, lastpos_byte); |
1c9241f5 | 3955 | val.tab_offset = taboffset + width; |
a2889657 JB |
3956 | } |
3957 | } | |
3958 | } | |
1c9241f5 KH |
3959 | else |
3960 | val.tab_offset = 0; | |
a2889657 JB |
3961 | |
3962 | /* If point is at eol or in invisible text at eol, | |
44fa5b1e | 3963 | record its frame location now. */ |
a2889657 | 3964 | |
ae3b1442 | 3965 | if (start <= PT && PT <= lastpos && cursor_vpos < 0) |
a2889657 JB |
3966 | { |
3967 | cursor_vpos = vpos; | |
d2f84654 | 3968 | cursor_hpos = p1 - leftmargin; |
a2889657 JB |
3969 | } |
3970 | ||
3971 | if (cursor_vpos == vpos) | |
3972 | { | |
3973 | if (cursor_hpos < 0) cursor_hpos = 0; | |
3974 | if (cursor_hpos > width) cursor_hpos = width; | |
73f194f1 | 3975 | cursor_hpos += WINDOW_LEFT_MARGIN (w); |
44fa5b1e | 3976 | if (w == XWINDOW (FRAME_SELECTED_WINDOW (f))) |
a2889657 | 3977 | { |
b5bbc9a5 KH |
3978 | if (!(cursor_in_echo_area && FRAME_HAS_MINIBUF_P (f) |
3979 | && EQ (FRAME_MINIBUF_WINDOW (f), minibuf_window))) | |
3980 | { | |
3981 | FRAME_CURSOR_Y (f) = cursor_vpos; | |
3982 | FRAME_CURSOR_X (f) = cursor_hpos; | |
3983 | } | |
a2889657 JB |
3984 | |
3985 | if (w == XWINDOW (selected_window)) | |
3986 | { | |
3987 | /* Line is not continued and did not start | |
3988 | in middle of character */ | |
73f194f1 | 3989 | if ((hpos - WINDOW_LEFT_MARGIN (w) |
a2889657 JB |
3990 | == (XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0)) |
3991 | && val.vpos) | |
3992 | { | |
3993 | this_line_bufpos = start; | |
3994 | this_line_buffer = current_buffer; | |
3995 | this_line_vpos = cursor_vpos; | |
89819bdd | 3996 | this_line_start_hpos = hpos - WINDOW_LEFT_MARGIN (w); |
a2889657 JB |
3997 | this_line_endpos = Z - lastpos; |
3998 | } | |
3999 | else | |
4000 | this_line_bufpos = 0; | |
4001 | } | |
4002 | } | |
4003 | } | |
4004 | ||
4005 | /* If hscroll and line not empty, insert truncation-at-left marker */ | |
4006 | if (hscroll && lastpos != start) | |
4007 | { | |
1c9241f5 KH |
4008 | GLYPH g = fix_glyph (f, truncator, 0); |
4009 | *leftmargin = g; | |
d2f84654 RS |
4010 | if (p1 <= leftmargin) |
4011 | p1 = leftmargin + 1; | |
1c9241f5 KH |
4012 | else /* MULE: it may be a wide-column character */ |
4013 | { | |
4014 | p1prev = leftmargin + 1; | |
4015 | while (p1prev < p1 && *p1prev & GLYPH_MASK_PADDING) | |
4016 | *p1prev++ = g; | |
4017 | } | |
a2889657 JB |
4018 | } |
4019 | ||
73f194f1 | 4020 | if (!WINDOW_RIGHTMOST_P (w)) |
a2889657 JB |
4021 | { |
4022 | endp++; | |
d2f84654 | 4023 | if (p1 < leftmargin) p1 = leftmargin; |
a2889657 | 4024 | while (p1 < endp) *p1++ = SPACEGLYPH; |
b1d1124b | 4025 | |
88f22aff JB |
4026 | /* Don't draw vertical bars if we're using scroll bars. They're |
4027 | covered up by the scroll bars, and it's distracting to see | |
4028 | them when the scroll bar windows are flickering around to be | |
b1d1124b | 4029 | reconfigured. */ |
73f194f1 | 4030 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT (f)) |
75d13c64 KH |
4031 | { |
4032 | int i; | |
4033 | for (i = 0; i < FRAME_SCROLL_BAR_COLS (f); i++) | |
4034 | *p1++ = SPACEGLYPH; | |
4035 | } | |
73f194f1 | 4036 | else if (!FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
75d13c64 | 4037 | *p1++ = (dp && INTEGERP (DISP_BORDER_GLYPH (dp)) |
8bb6ca14 | 4038 | ? XINT (DISP_BORDER_GLYPH (dp)) |
75d13c64 | 4039 | : '|'); |
a2889657 JB |
4040 | } |
4041 | desired_glyphs->used[vpos] = max (desired_glyphs->used[vpos], | |
4042 | p1 - desired_glyphs->glyphs[vpos]); | |
4043 | desired_glyphs->glyphs[vpos][desired_glyphs->used[vpos]] = 0; | |
4044 | ||
4045 | /* If the start of this line is the overlay arrow-position, | |
4046 | then put the arrow string into the display-line. */ | |
4047 | ||
e24c997d | 4048 | if (MARKERP (Voverlay_arrow_position) |
a2889657 JB |
4049 | && current_buffer == XMARKER (Voverlay_arrow_position)->buffer |
4050 | && start == marker_position (Voverlay_arrow_position) | |
e24c997d | 4051 | && STRINGP (Voverlay_arrow_string) |
a2889657 JB |
4052 | && ! overlay_arrow_seen) |
4053 | { | |
0a9dc68b | 4054 | int i, i_byte; |
a2889657 | 4055 | int len = XSTRING (Voverlay_arrow_string)->size; |
142be3dd | 4056 | int arrow_end; |
a2889657 | 4057 | |
b1d1124b JB |
4058 | if (len > width) |
4059 | len = width; | |
212e4f87 RS |
4060 | |
4061 | /* If the arrow string has text props, obey them when displaying. */ | |
4062 | for (i = 0, i_byte = 0; i < len; ) | |
c4628384 | 4063 | { |
212e4f87 RS |
4064 | int c; |
4065 | Lisp_Object face, ilisp; | |
4066 | int newface; | |
4067 | int idx = i; | |
c4628384 | 4068 | |
212e4f87 RS |
4069 | if (STRING_MULTIBYTE (Voverlay_arrow_string)) |
4070 | FETCH_STRING_CHAR_ADVANCE (c, Voverlay_arrow_string, i, i_byte); | |
4071 | else | |
4072 | c = XSTRING (Voverlay_arrow_string)->data[i++]; | |
0a9dc68b | 4073 | |
212e4f87 RS |
4074 | XSETFASTINT (ilisp, i); |
4075 | #ifdef HAVE_FACES | |
4076 | if (FRAME_WINDOW_P (f)) | |
4077 | { | |
c4628384 RS |
4078 | face = Fget_text_property (ilisp, Qface, Voverlay_arrow_string); |
4079 | newface = compute_glyph_face_1 (f, face, 0); | |
212e4f87 | 4080 | c = FAST_MAKE_GLYPH (c, newface); |
c4628384 | 4081 | } |
87485d6f | 4082 | #endif /* HAVE_FACES */ |
212e4f87 | 4083 | leftmargin[idx] = c; |
c4628384 | 4084 | } |
142be3dd JB |
4085 | |
4086 | /* Bug in SunOS 4.1.1 compiler requires this intermediate variable. */ | |
d2f84654 | 4087 | arrow_end = (leftmargin - desired_glyphs->glyphs[vpos]) + len; |
142be3dd JB |
4088 | if (desired_glyphs->used[vpos] < arrow_end) |
4089 | desired_glyphs->used[vpos] = arrow_end; | |
a2889657 JB |
4090 | |
4091 | overlay_arrow_seen = 1; | |
4092 | } | |
4093 | ||
4094 | val.bufpos = pos; | |
12adba34 | 4095 | val.bytepos = pos_byte; |
0f9c0ff0 | 4096 | val.ovstring_chars_done = ovstr_done; |
a2889657 JB |
4097 | val_display_text_line = val; |
4098 | return &val_display_text_line; | |
4099 | } | |
4100 | \f | |
7ce2c095 RS |
4101 | /* Redisplay the menu bar in the frame for window W. */ |
4102 | ||
4103 | static void | |
4104 | display_menu_bar (w) | |
4105 | struct window *w; | |
4106 | { | |
4107 | Lisp_Object items, tail; | |
4108 | register int vpos = 0; | |
4109 | register FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
eeb4f710 | 4110 | int maxendcol = FRAME_WIDTH (f); |
7ce2c095 | 4111 | int hpos = 0; |
8351baf2 | 4112 | int i; |
7ce2c095 | 4113 | |
dc937613 | 4114 | #ifdef HAVE_NTGUI |
d129c4c2 KH |
4115 | if (!NILP (Vwindow_system)) |
4116 | return; | |
dc937613 RS |
4117 | #endif |
4118 | ||
4119 | #ifdef USE_X_TOOLKIT | |
d3413a53 | 4120 | if (FRAME_X_P (f)) |
7ce2c095 | 4121 | return; |
dc937613 | 4122 | #endif /* USE_X_TOOLKIT */ |
7ce2c095 RS |
4123 | |
4124 | get_display_line (f, vpos, 0); | |
4125 | ||
8351baf2 | 4126 | items = FRAME_MENU_BAR_ITEMS (f); |
469937ac | 4127 | for (i = 0; i < XVECTOR (items)->size; i += 4) |
7ce2c095 | 4128 | { |
8351baf2 RS |
4129 | Lisp_Object pos, string; |
4130 | string = XVECTOR (items)->contents[i + 1]; | |
4131 | if (NILP (string)) | |
4132 | break; | |
2d66ad19 | 4133 | |
469937ac | 4134 | XSETFASTINT (XVECTOR (items)->contents[i + 3], hpos); |
7ce2c095 RS |
4135 | |
4136 | if (hpos < maxendcol) | |
11c52c4f | 4137 | hpos = display_string (w, vpos, |
7ce2c095 | 4138 | XSTRING (string)->data, |
fc932ac6 | 4139 | STRING_BYTES (XSTRING (string)), |
0a9dc68b RS |
4140 | hpos, 0, 0, hpos, maxendcol, |
4141 | STRING_MULTIBYTE (string)); | |
6b1bbc46 | 4142 | /* Put a space between items. */ |
2d66ad19 RS |
4143 | if (hpos < maxendcol) |
4144 | { | |
6b1bbc46 | 4145 | int hpos1 = hpos + 1; |
278feba9 | 4146 | hpos = display_string (w, vpos, "", 0, hpos, 0, 0, |
a3788d53 | 4147 | min (hpos1, maxendcol), maxendcol, 0); |
2d66ad19 | 4148 | } |
7ce2c095 RS |
4149 | } |
4150 | ||
4151 | FRAME_DESIRED_GLYPHS (f)->bufp[vpos] = 0; | |
4152 | FRAME_DESIRED_GLYPHS (f)->highlight[vpos] = mode_line_inverse_video; | |
2d66ad19 RS |
4153 | |
4154 | /* Fill out the line with spaces. */ | |
4155 | if (maxendcol > hpos) | |
a3788d53 | 4156 | hpos = display_string (w, vpos, "", 0, hpos, 0, 0, maxendcol, maxendcol, 0); |
db6f348c JB |
4157 | |
4158 | /* Clear the rest of the lines allocated to the menu bar. */ | |
4159 | vpos++; | |
4160 | while (vpos < FRAME_MENU_BAR_LINES (f)) | |
4161 | get_display_line (f, vpos++, 0); | |
7ce2c095 RS |
4162 | } |
4163 | \f | |
a2889657 JB |
4164 | /* Display the mode line for window w */ |
4165 | ||
4166 | static void | |
4167 | display_mode_line (w) | |
4168 | struct window *w; | |
4169 | { | |
4170 | register int vpos = XFASTINT (w->height) + XFASTINT (w->top) - 1; | |
73f194f1 RS |
4171 | register int left = WINDOW_LEFT_MARGIN (w); |
4172 | register int right = WINDOW_RIGHT_MARGIN (w); | |
44fa5b1e | 4173 | register FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
a2889657 | 4174 | |
aa6d10fa | 4175 | line_number_displayed = 0; |
155ef550 | 4176 | w->column_number_displayed = Qnil; |
aa6d10fa | 4177 | |
44fa5b1e | 4178 | get_display_line (f, vpos, left); |
03b294dc RS |
4179 | |
4180 | /* Temporarily make frame F's kboard the current kboard | |
4181 | so that kboard-local variables in the mode_line_format | |
4182 | will get the right values. */ | |
4183 | push_frame_kboard (f); | |
4184 | ||
4185 | display_mode_element (w, vpos, left, 0, right, right, | |
4186 | current_buffer->mode_line_format); | |
4187 | ||
4188 | pop_frame_kboard (); | |
4189 | ||
44fa5b1e | 4190 | FRAME_DESIRED_GLYPHS (f)->bufp[vpos] = 0; |
a2889657 | 4191 | |
73f194f1 RS |
4192 | /* Put the mode line in inverse video. |
4193 | Use faces if possible, since that lets us handle | |
4194 | partial-width windows and avoid inverting the scroll bar columns. */ | |
87485d6f | 4195 | #ifdef HAVE_FACES |
73f194f1 | 4196 | if (! FRAME_TERMCAP_P (f) && mode_line_inverse_video) |
d7eb09a0 RS |
4197 | { |
4198 | /* For a partial width window, explicitly set face of each glyph. */ | |
4199 | int i; | |
1c9241f5 | 4200 | unsigned int padding; |
d7eb09a0 RS |
4201 | GLYPH *ptr = FRAME_DESIRED_GLYPHS (f)->glyphs[vpos]; |
4202 | for (i = left; i < right; ++i) | |
1c9241f5 KH |
4203 | { |
4204 | padding = ptr[i] & GLYPH_MASK_PADDING; | |
4205 | ptr[i] = FAST_MAKE_GLYPH (FAST_GLYPH_CHAR (ptr[i]), 1) | padding; | |
4206 | } | |
d7eb09a0 | 4207 | } |
010a899e | 4208 | else |
4cdc65eb | 4209 | #endif |
73f194f1 RS |
4210 | |
4211 | /* Make the mode line inverse video if the entire line | |
4212 | is made of mode lines. | |
4213 | I.e. if this window is full width, | |
4214 | or if it is the child of a full width window | |
4215 | (which implies that that window is split side-by-side | |
4216 | and the rest of this line is mode lines of the sibling windows). */ | |
010a899e KH |
4217 | if (WINDOW_FULL_WIDTH_P (w) |
4218 | || WINDOW_FULL_WIDTH_P (XWINDOW (w->parent))) | |
73f194f1 | 4219 | FRAME_DESIRED_GLYPHS (f)->highlight[vpos] = mode_line_inverse_video; |
a2889657 JB |
4220 | } |
4221 | ||
4222 | /* Contribute ELT to the mode line for window W. | |
4223 | How it translates into text depends on its data type. | |
4224 | ||
4225 | VPOS is the position of the mode line being displayed. | |
4226 | ||
44fa5b1e | 4227 | HPOS is the position (absolute on frame) where this element's text |
a2889657 JB |
4228 | should start. The output is truncated automatically at the right |
4229 | edge of window W. | |
4230 | ||
4231 | DEPTH is the depth in recursion. It is used to prevent | |
4232 | infinite recursion here. | |
4233 | ||
4234 | MINENDCOL is the hpos before which the element may not end. | |
4235 | The element is padded at the right with spaces if nec | |
4236 | to reach this column. | |
4237 | ||
4238 | MAXENDCOL is the hpos past which this element may not extend. | |
4239 | If MINENDCOL is > MAXENDCOL, MINENDCOL takes priority. | |
4240 | (This is necessary to make nested padding and truncation work.) | |
4241 | ||
4242 | Returns the hpos of the end of the text generated by ELT. | |
4243 | The next element will receive that value as its HPOS arg, | |
4244 | so as to concatenate the elements. */ | |
4245 | ||
4246 | static int | |
4247 | display_mode_element (w, vpos, hpos, depth, minendcol, maxendcol, elt) | |
4248 | struct window *w; | |
4249 | register int vpos, hpos; | |
4250 | int depth; | |
4251 | int minendcol; | |
4252 | register int maxendcol; | |
4253 | register Lisp_Object elt; | |
4254 | { | |
4255 | tail_recurse: | |
4256 | if (depth > 10) | |
4257 | goto invalid; | |
4258 | ||
4259 | depth++; | |
4260 | ||
0220c518 | 4261 | switch (SWITCH_ENUM_CAST (XTYPE (elt))) |
a2889657 JB |
4262 | { |
4263 | case Lisp_String: | |
4264 | { | |
4265 | /* A string: output it and check for %-constructs within it. */ | |
4266 | register unsigned char c; | |
4267 | register unsigned char *this = XSTRING (elt)->data; | |
4268 | ||
4269 | while (hpos < maxendcol && *this) | |
4270 | { | |
4271 | unsigned char *last = this; | |
4272 | while ((c = *this++) != '\0' && c != '%') | |
4273 | ; | |
4274 | if (this - 1 != last) | |
4275 | { | |
4276 | register int lim = --this - last + hpos; | |
d39b6696 KH |
4277 | if (frame_title_ptr) |
4278 | hpos = store_frame_title (last, hpos, min (lim, maxendcol)); | |
4279 | else | |
4280 | hpos = display_string (w, vpos, last, -1, hpos, 0, 1, | |
0a9dc68b RS |
4281 | hpos, min (lim, maxendcol), |
4282 | STRING_MULTIBYTE (elt)); | |
a2889657 JB |
4283 | } |
4284 | else /* c == '%' */ | |
4285 | { | |
766525bc | 4286 | register int minendcol; |
a2889657 JB |
4287 | register int spec_width = 0; |
4288 | ||
4289 | /* We can't allow -ve args due to the "%-" construct */ | |
4290 | /* Argument specifies minwidth but not maxwidth | |
4291 | (maxwidth can be specified by | |
4292 | (<negative-number> . <stuff>) mode-line elements) */ | |
4293 | ||
4294 | while ((c = *this++) >= '0' && c <= '9') | |
4295 | { | |
4296 | spec_width = spec_width * 10 + (c - '0'); | |
4297 | } | |
4298 | ||
766525bc RS |
4299 | minendcol = hpos + spec_width; |
4300 | if (minendcol > maxendcol) | |
4301 | { | |
4302 | spec_width = maxendcol - hpos; | |
4303 | minendcol = maxendcol; | |
4304 | } | |
a2889657 JB |
4305 | |
4306 | if (c == 'M') | |
4307 | hpos = display_mode_element (w, vpos, hpos, depth, | |
4308 | spec_width, maxendcol, | |
4309 | Vglobal_mode_string); | |
4310 | else if (c != 0) | |
d39b6696 | 4311 | { |
766525bc RS |
4312 | char *spec = decode_mode_spec (w, c, spec_width, |
4313 | maxendcol - hpos); | |
d39b6696 | 4314 | if (frame_title_ptr) |
766525bc | 4315 | hpos = store_frame_title (spec, minendcol, maxendcol); |
d39b6696 KH |
4316 | else |
4317 | hpos = display_string (w, vpos, spec, -1, | |
4318 | hpos, 0, 1, | |
a3788d53 | 4319 | minendcol, maxendcol, -1); |
d39b6696 | 4320 | } |
a2889657 JB |
4321 | } |
4322 | } | |
4323 | } | |
4324 | break; | |
4325 | ||
4326 | case Lisp_Symbol: | |
4327 | /* A symbol: process the value of the symbol recursively | |
4328 | as if it appeared here directly. Avoid error if symbol void. | |
4329 | Special case: if value of symbol is a string, output the string | |
4330 | literally. */ | |
4331 | { | |
4332 | register Lisp_Object tem; | |
4333 | tem = Fboundp (elt); | |
265a9e55 | 4334 | if (!NILP (tem)) |
a2889657 JB |
4335 | { |
4336 | tem = Fsymbol_value (elt); | |
4337 | /* If value is a string, output that string literally: | |
4338 | don't check for % within it. */ | |
e24c997d | 4339 | if (STRINGP (tem)) |
d39b6696 KH |
4340 | { |
4341 | if (frame_title_ptr) | |
4342 | hpos = store_frame_title (XSTRING (tem)->data, | |
4343 | minendcol, maxendcol); | |
4344 | else | |
4345 | hpos = display_string (w, vpos, XSTRING (tem)->data, | |
fc932ac6 | 4346 | STRING_BYTES (XSTRING (tem)), |
0a9dc68b RS |
4347 | hpos, 0, 1, minendcol, maxendcol, |
4348 | STRING_MULTIBYTE (tem)); | |
d39b6696 | 4349 | } |
a2889657 JB |
4350 | /* Give up right away for nil or t. */ |
4351 | else if (!EQ (tem, elt)) | |
4352 | { elt = tem; goto tail_recurse; } | |
4353 | } | |
4354 | } | |
4355 | break; | |
4356 | ||
4357 | case Lisp_Cons: | |
4358 | { | |
4359 | register Lisp_Object car, tem; | |
4360 | ||
4361 | /* A cons cell: three distinct cases. | |
4362 | If first element is a string or a cons, process all the elements | |
4363 | and effectively concatenate them. | |
4364 | If first element is a negative number, truncate displaying cdr to | |
4365 | at most that many characters. If positive, pad (with spaces) | |
4366 | to at least that many characters. | |
4367 | If first element is a symbol, process the cadr or caddr recursively | |
4368 | according to whether the symbol's value is non-nil or nil. */ | |
4369 | car = XCONS (elt)->car; | |
e24c997d | 4370 | if (SYMBOLP (car)) |
a2889657 JB |
4371 | { |
4372 | tem = Fboundp (car); | |
4373 | elt = XCONS (elt)->cdr; | |
e24c997d | 4374 | if (!CONSP (elt)) |
a2889657 JB |
4375 | goto invalid; |
4376 | /* elt is now the cdr, and we know it is a cons cell. | |
4377 | Use its car if CAR has a non-nil value. */ | |
265a9e55 | 4378 | if (!NILP (tem)) |
a2889657 JB |
4379 | { |
4380 | tem = Fsymbol_value (car); | |
265a9e55 | 4381 | if (!NILP (tem)) |
a2889657 JB |
4382 | { elt = XCONS (elt)->car; goto tail_recurse; } |
4383 | } | |
4384 | /* Symbol's value is nil (or symbol is unbound) | |
4385 | Get the cddr of the original list | |
4386 | and if possible find the caddr and use that. */ | |
4387 | elt = XCONS (elt)->cdr; | |
265a9e55 | 4388 | if (NILP (elt)) |
a2889657 | 4389 | break; |
e24c997d | 4390 | else if (!CONSP (elt)) |
a2889657 JB |
4391 | goto invalid; |
4392 | elt = XCONS (elt)->car; | |
4393 | goto tail_recurse; | |
4394 | } | |
e24c997d | 4395 | else if (INTEGERP (car)) |
a2889657 JB |
4396 | { |
4397 | register int lim = XINT (car); | |
4398 | elt = XCONS (elt)->cdr; | |
4399 | if (lim < 0) | |
4400 | /* Negative int means reduce maximum width. | |
4401 | DO NOT change MINENDCOL here! | |
4402 | (20 -10 . foo) should truncate foo to 10 col | |
4403 | and then pad to 20. */ | |
4404 | maxendcol = min (maxendcol, hpos - lim); | |
4405 | else if (lim > 0) | |
4406 | { | |
4407 | /* Padding specified. Don't let it be more than | |
4408 | current maximum. */ | |
4409 | lim += hpos; | |
4410 | if (lim > maxendcol) | |
4411 | lim = maxendcol; | |
4412 | /* If that's more padding than already wanted, queue it. | |
4413 | But don't reduce padding already specified even if | |
4414 | that is beyond the current truncation point. */ | |
4415 | if (lim > minendcol) | |
4416 | minendcol = lim; | |
4417 | } | |
4418 | goto tail_recurse; | |
4419 | } | |
e24c997d | 4420 | else if (STRINGP (car) || CONSP (car)) |
a2889657 JB |
4421 | { |
4422 | register int limit = 50; | |
4423 | /* LIMIT is to protect against circular lists. */ | |
e24c997d | 4424 | while (CONSP (elt) && --limit > 0 |
a2889657 JB |
4425 | && hpos < maxendcol) |
4426 | { | |
4427 | hpos = display_mode_element (w, vpos, hpos, depth, | |
4428 | hpos, maxendcol, | |
4429 | XCONS (elt)->car); | |
4430 | elt = XCONS (elt)->cdr; | |
4431 | } | |
4432 | } | |
4433 | } | |
4434 | break; | |
4435 | ||
4436 | default: | |
4437 | invalid: | |
d39b6696 KH |
4438 | if (frame_title_ptr) |
4439 | hpos = store_frame_title ("*invalid*", minendcol, maxendcol); | |
4440 | else | |
4441 | hpos = display_string (w, vpos, "*invalid*", -1, hpos, 0, 1, | |
a3788d53 | 4442 | minendcol, maxendcol, 0); |
d39b6696 | 4443 | return hpos; |
a2889657 JB |
4444 | } |
4445 | ||
a2889657 | 4446 | if (minendcol > hpos) |
d39b6696 KH |
4447 | if (frame_title_ptr) |
4448 | hpos = store_frame_title ("", minendcol, maxendcol); | |
4449 | else | |
a3788d53 RS |
4450 | hpos = display_string (w, vpos, "", 0, hpos, |
4451 | 0, 1, minendcol, maxendcol, 0); | |
a2889657 JB |
4452 | return hpos; |
4453 | } | |
4454 | \f | |
766525bc RS |
4455 | /* Write a null-terminated, right justified decimal representation of |
4456 | the positive integer D to BUF using a minimal field width WIDTH. */ | |
4457 | ||
4458 | static void | |
4459 | pint2str (buf, width, d) | |
4460 | register char *buf; | |
4461 | register int width; | |
4462 | register int d; | |
4463 | { | |
4464 | register char *p = buf; | |
4465 | ||
4466 | if (d <= 0) | |
4467 | *p++ = '0'; | |
4468 | else | |
4469 | while (d > 0) | |
4470 | { | |
4471 | *p++ = d % 10 + '0'; | |
4472 | d /= 10; | |
4473 | } | |
4474 | for (width -= (int) (p - buf); width > 0; --width) *p++ = ' '; | |
4475 | *p-- = '\0'; | |
4476 | while (p > buf) | |
4477 | { | |
4478 | d = *buf; | |
4479 | *buf++ = *p; | |
4480 | *p-- = d; | |
4481 | } | |
4482 | } | |
4483 | ||
1c9241f5 KH |
4484 | /* Set a mnemonic character for CODING_SYSTEM (Lisp symbol) in BUF. |
4485 | If EOL_FLAG is 1, set also a mnemonic character for end-of-line | |
4486 | type of CODING_SYSTEM. Return updated pointer into BUF. */ | |
4487 | ||
4488 | static char * | |
4489 | decode_mode_spec_coding (coding_system, buf, eol_flag) | |
4490 | Lisp_Object coding_system; | |
4491 | register char *buf; | |
4492 | int eol_flag; | |
4493 | { | |
1e1078d6 | 4494 | Lisp_Object val; |
916848d8 | 4495 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
1e1078d6 RS |
4496 | |
4497 | val = coding_system; | |
1c9241f5 KH |
4498 | |
4499 | if (NILP (val)) /* Not yet decided. */ | |
4500 | { | |
916848d8 RS |
4501 | if (multibyte) |
4502 | *buf++ = '-'; | |
21e989e3 RS |
4503 | if (eol_flag) |
4504 | *buf++ = eol_mnemonic_undecided; | |
1e1078d6 | 4505 | /* Don't mention EOL conversion if it isn't decided. */ |
1c9241f5 KH |
4506 | } |
4507 | else | |
4508 | { | |
1e1078d6 RS |
4509 | Lisp_Object eolvalue; |
4510 | ||
4511 | eolvalue = Fget (coding_system, Qeol_type); | |
4512 | ||
1c9241f5 | 4513 | while (!NILP (val) && SYMBOLP (val)) |
1e1078d6 RS |
4514 | { |
4515 | val = Fget (val, Qcoding_system); | |
4516 | if (NILP (eolvalue)) | |
b070c1d7 | 4517 | eolvalue = Fget (val, Qeol_type); |
1e1078d6 RS |
4518 | } |
4519 | ||
916848d8 RS |
4520 | if (multibyte) |
4521 | *buf++ = XFASTINT (XVECTOR (val)->contents[1]); | |
4522 | ||
1c9241f5 KH |
4523 | if (eol_flag) |
4524 | { | |
1e1078d6 RS |
4525 | /* The EOL conversion we are using. */ |
4526 | int eoltype; | |
4527 | /* The EOL conversion that is normal on this system. */ | |
4528 | ||
4529 | if (NILP (eolvalue)) /* Not yet decided. */ | |
4530 | eoltype = eol_mnemonic_undecided; | |
4531 | else if (VECTORP (eolvalue)) /* Not yet decided. */ | |
4532 | eoltype = eol_mnemonic_undecided; | |
4533 | else /* INTEGERP (eolvalue) -- 0:LF, 1:CRLF, 2:CR */ | |
4534 | eoltype = (XFASTINT (eolvalue) == 0 | |
4535 | ? eol_mnemonic_unix | |
4536 | : (XFASTINT (eolvalue) == 1 | |
4537 | ? eol_mnemonic_dos : eol_mnemonic_mac)); | |
4538 | ||
4539 | /* Mention the EOL conversion if it is not the usual one. */ | |
4540 | *buf++ = eoltype; | |
1c9241f5 KH |
4541 | } |
4542 | } | |
4543 | return buf; | |
4544 | } | |
4545 | ||
a2889657 | 4546 | /* Return a string for the output of a mode line %-spec for window W, |
766525bc RS |
4547 | generated by character C. SPEC_WIDTH is the field width when |
4548 | padding to the left (%c, %l). The value returned from this | |
4549 | function will later be truncated to width MAXWIDTH. */ | |
a2889657 | 4550 | |
11e82b76 JB |
4551 | static char lots_of_dashes[] = "--------------------------------------------------------------------------------------------------------------------------------------------"; |
4552 | ||
a2889657 | 4553 | static char * |
766525bc | 4554 | decode_mode_spec (w, c, spec_width, maxwidth) |
a2889657 JB |
4555 | struct window *w; |
4556 | register char c; | |
766525bc | 4557 | register int spec_width; |
a2889657 JB |
4558 | register int maxwidth; |
4559 | { | |
0b67772d | 4560 | Lisp_Object obj; |
44fa5b1e JB |
4561 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
4562 | char *decode_mode_spec_buf = (char *) FRAME_TEMP_GLYPHS (f)->total_contents; | |
d39b6696 | 4563 | struct buffer *b = XBUFFER (w->buffer); |
a2889657 | 4564 | |
0b67772d | 4565 | obj = Qnil; |
44fa5b1e JB |
4566 | if (maxwidth > FRAME_WIDTH (f)) |
4567 | maxwidth = FRAME_WIDTH (f); | |
a2889657 JB |
4568 | |
4569 | switch (c) | |
4570 | { | |
1af9f229 RS |
4571 | case '*': |
4572 | if (!NILP (b->read_only)) | |
4573 | return "%"; | |
4574 | if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
4575 | return "*"; | |
4576 | return "-"; | |
4577 | ||
4578 | case '+': | |
4579 | /* This differs from %* only for a modified read-only buffer. */ | |
4580 | if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
4581 | return "*"; | |
4582 | if (!NILP (b->read_only)) | |
4583 | return "%"; | |
4584 | return "-"; | |
4585 | ||
4586 | case '&': | |
4587 | /* This differs from %* in ignoring read-only-ness. */ | |
4588 | if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
4589 | return "*"; | |
4590 | return "-"; | |
4591 | ||
4592 | case '%': | |
4593 | return "%"; | |
4594 | ||
4595 | case '[': | |
4596 | { | |
4597 | int i; | |
4598 | char *p; | |
4599 | ||
4600 | if (command_loop_level > 5) | |
4601 | return "[[[... "; | |
4602 | p = decode_mode_spec_buf; | |
4603 | for (i = 0; i < command_loop_level; i++) | |
4604 | *p++ = '['; | |
4605 | *p = 0; | |
4606 | return decode_mode_spec_buf; | |
4607 | } | |
4608 | ||
4609 | case ']': | |
4610 | { | |
4611 | int i; | |
4612 | char *p; | |
4613 | ||
4614 | if (command_loop_level > 5) | |
4615 | return " ...]]]"; | |
4616 | p = decode_mode_spec_buf; | |
4617 | for (i = 0; i < command_loop_level; i++) | |
4618 | *p++ = ']'; | |
4619 | *p = 0; | |
4620 | return decode_mode_spec_buf; | |
4621 | } | |
4622 | ||
4623 | case '-': | |
4624 | { | |
4625 | register char *p; | |
4626 | register int i; | |
4627 | ||
4628 | if (maxwidth < sizeof (lots_of_dashes)) | |
4629 | return lots_of_dashes; | |
4630 | else | |
4631 | { | |
4632 | for (p = decode_mode_spec_buf, i = maxwidth; i > 0; i--) | |
4633 | *p++ = '-'; | |
4634 | *p = '\0'; | |
4635 | } | |
4636 | return decode_mode_spec_buf; | |
4637 | } | |
4638 | ||
a2889657 | 4639 | case 'b': |
d39b6696 | 4640 | obj = b->name; |
a2889657 | 4641 | #if 0 |
fc932ac6 | 4642 | if (maxwidth >= 3 && STRING_BYTES (XSTRING (obj)) > maxwidth) |
a2889657 JB |
4643 | { |
4644 | bcopy (XSTRING (obj)->data, decode_mode_spec_buf, maxwidth - 1); | |
4645 | decode_mode_spec_buf[maxwidth - 1] = '\\'; | |
4646 | decode_mode_spec_buf[maxwidth] = '\0'; | |
4647 | return decode_mode_spec_buf; | |
4648 | } | |
4649 | #endif | |
4650 | break; | |
4651 | ||
1af9f229 RS |
4652 | case 'c': |
4653 | { | |
4654 | int col = current_column (); | |
4655 | XSETFASTINT (w->column_number_displayed, col); | |
766525bc | 4656 | pint2str (decode_mode_spec_buf, spec_width, col); |
1af9f229 RS |
4657 | return decode_mode_spec_buf; |
4658 | } | |
4659 | ||
4660 | case 'F': | |
4661 | /* %F displays the frame name. */ | |
261bfd0e EZ |
4662 | /* Systems that can only display a single frame at a time should |
4663 | NOT replace the frame name with the (constant) frame title, | |
4664 | since then they won't be able to tell which frame is that. */ | |
4665 | if (FRAME_WINDOW_P (f) && !NILP (f->title)) | |
95184b48 | 4666 | return (char *) XSTRING (f->title)->data; |
fd8ff63d | 4667 | if (f->explicit_name || ! FRAME_WINDOW_P (f)) |
95184b48 | 4668 | return (char *) XSTRING (f->name)->data; |
9c6da96f | 4669 | return "Emacs"; |
1af9f229 | 4670 | |
a2889657 | 4671 | case 'f': |
d39b6696 | 4672 | obj = b->filename; |
a2889657 | 4673 | #if 0 |
265a9e55 | 4674 | if (NILP (obj)) |
a2889657 | 4675 | return "[none]"; |
fc932ac6 | 4676 | else if (STRINGP (obj) && STRING_BYTES (XSTRING (obj)) > maxwidth) |
a2889657 JB |
4677 | { |
4678 | bcopy ("...", decode_mode_spec_buf, 3); | |
fc932ac6 | 4679 | bcopy (XSTRING (obj)->data + STRING_BYTES (XSTRING (obj)) - maxwidth + 3, |
a2889657 JB |
4680 | decode_mode_spec_buf + 3, maxwidth - 3); |
4681 | return decode_mode_spec_buf; | |
4682 | } | |
4683 | #endif | |
4684 | break; | |
4685 | ||
aa6d10fa RS |
4686 | case 'l': |
4687 | { | |
12adba34 RS |
4688 | int startpos = XMARKER (w->start)->charpos; |
4689 | int startpos_byte = marker_byte_position (w->start); | |
4690 | int line, linepos, linepos_byte, topline; | |
aa6d10fa RS |
4691 | int nlines, junk; |
4692 | Lisp_Object tem; | |
4693 | int height = XFASTINT (w->height); | |
4694 | ||
4695 | /* If we decided that this buffer isn't suitable for line numbers, | |
4696 | don't forget that too fast. */ | |
4697 | if (EQ (w->base_line_pos, w->buffer)) | |
766525bc | 4698 | goto no_value; |
5300fd39 RS |
4699 | /* But do forget it, if the window shows a different buffer now. */ |
4700 | else if (BUFFERP (w->base_line_pos)) | |
4701 | w->base_line_pos = Qnil; | |
aa6d10fa RS |
4702 | |
4703 | /* If the buffer is very big, don't waste time. */ | |
d39b6696 | 4704 | if (BUF_ZV (b) - BUF_BEGV (b) > line_number_display_limit) |
aa6d10fa RS |
4705 | { |
4706 | w->base_line_pos = Qnil; | |
4707 | w->base_line_number = Qnil; | |
766525bc | 4708 | goto no_value; |
aa6d10fa RS |
4709 | } |
4710 | ||
4711 | if (!NILP (w->base_line_number) | |
4712 | && !NILP (w->base_line_pos) | |
12adba34 | 4713 | && XFASTINT (w->base_line_pos) <= startpos) |
aa6d10fa RS |
4714 | { |
4715 | line = XFASTINT (w->base_line_number); | |
4716 | linepos = XFASTINT (w->base_line_pos); | |
12adba34 | 4717 | linepos_byte = buf_charpos_to_bytepos (b, linepos); |
aa6d10fa RS |
4718 | } |
4719 | else | |
4720 | { | |
4721 | line = 1; | |
d39b6696 | 4722 | linepos = BUF_BEGV (b); |
12adba34 | 4723 | linepos_byte = BUF_BEGV_BYTE (b); |
aa6d10fa RS |
4724 | } |
4725 | ||
4726 | /* Count lines from base line to window start position. */ | |
12adba34 RS |
4727 | nlines = display_count_lines (linepos, linepos_byte, |
4728 | startpos_byte, | |
4729 | startpos, &junk); | |
aa6d10fa RS |
4730 | |
4731 | topline = nlines + line; | |
4732 | ||
4733 | /* Determine a new base line, if the old one is too close | |
4734 | or too far away, or if we did not have one. | |
4735 | "Too close" means it's plausible a scroll-down would | |
4736 | go back past it. */ | |
d39b6696 | 4737 | if (startpos == BUF_BEGV (b)) |
aa6d10fa | 4738 | { |
c2213350 KH |
4739 | XSETFASTINT (w->base_line_number, topline); |
4740 | XSETFASTINT (w->base_line_pos, BUF_BEGV (b)); | |
aa6d10fa RS |
4741 | } |
4742 | else if (nlines < height + 25 || nlines > height * 3 + 50 | |
d39b6696 | 4743 | || linepos == BUF_BEGV (b)) |
aa6d10fa | 4744 | { |
d39b6696 | 4745 | int limit = BUF_BEGV (b); |
12adba34 | 4746 | int limit_byte = BUF_BEGV_BYTE (b); |
aa6d10fa RS |
4747 | int position; |
4748 | int distance = (height * 2 + 30) * 200; | |
4749 | ||
4750 | if (startpos - distance > limit) | |
12adba34 RS |
4751 | { |
4752 | limit = startpos - distance; | |
4753 | limit_byte = CHAR_TO_BYTE (limit); | |
4754 | } | |
aa6d10fa | 4755 | |
12adba34 RS |
4756 | nlines = display_count_lines (startpos, startpos_byte, |
4757 | limit_byte, | |
4758 | - (height * 2 + 30), | |
aa6d10fa RS |
4759 | &position); |
4760 | /* If we couldn't find the lines we wanted within | |
4761 | 200 chars per line, | |
4762 | give up on line numbers for this window. */ | |
12adba34 | 4763 | if (position == limit_byte && limit == startpos - distance) |
aa6d10fa RS |
4764 | { |
4765 | w->base_line_pos = w->buffer; | |
4766 | w->base_line_number = Qnil; | |
766525bc | 4767 | goto no_value; |
aa6d10fa RS |
4768 | } |
4769 | ||
c2213350 | 4770 | XSETFASTINT (w->base_line_number, topline - nlines); |
12adba34 | 4771 | XSETFASTINT (w->base_line_pos, BYTE_TO_CHAR (position)); |
aa6d10fa RS |
4772 | } |
4773 | ||
4774 | /* Now count lines from the start pos to point. */ | |
12adba34 RS |
4775 | nlines = display_count_lines (startpos, startpos_byte, |
4776 | PT_BYTE, PT, &junk); | |
aa6d10fa RS |
4777 | |
4778 | /* Record that we did display the line number. */ | |
4779 | line_number_displayed = 1; | |
4780 | ||
4781 | /* Make the string to show. */ | |
766525bc | 4782 | pint2str (decode_mode_spec_buf, spec_width, topline + nlines); |
aa6d10fa | 4783 | return decode_mode_spec_buf; |
766525bc RS |
4784 | no_value: |
4785 | { | |
4786 | char* p = decode_mode_spec_buf; | |
4787 | for (spec_width -= 2; spec_width > 0; --spec_width) *p++ = ' '; | |
4788 | strcpy (p, "??"); | |
4789 | return decode_mode_spec_buf; | |
4790 | } | |
aa6d10fa RS |
4791 | } |
4792 | break; | |
4793 | ||
a2889657 | 4794 | case 'm': |
d39b6696 | 4795 | obj = b->mode_name; |
a2889657 JB |
4796 | break; |
4797 | ||
4798 | case 'n': | |
d39b6696 | 4799 | if (BUF_BEGV (b) > BUF_BEG (b) || BUF_ZV (b) < BUF_Z (b)) |
a2889657 JB |
4800 | return " Narrow"; |
4801 | break; | |
4802 | ||
a2889657 JB |
4803 | case 'p': |
4804 | { | |
4805 | int pos = marker_position (w->start); | |
d39b6696 | 4806 | int total = BUF_ZV (b) - BUF_BEGV (b); |
a2889657 | 4807 | |
d39b6696 | 4808 | if (XFASTINT (w->window_end_pos) <= BUF_Z (b) - BUF_ZV (b)) |
a2889657 | 4809 | { |
d39b6696 | 4810 | if (pos <= BUF_BEGV (b)) |
a2889657 JB |
4811 | return "All"; |
4812 | else | |
4813 | return "Bottom"; | |
4814 | } | |
d39b6696 | 4815 | else if (pos <= BUF_BEGV (b)) |
a2889657 JB |
4816 | return "Top"; |
4817 | else | |
4818 | { | |
3c7d31b9 RS |
4819 | if (total > 1000000) |
4820 | /* Do it differently for a large value, to avoid overflow. */ | |
4821 | total = ((pos - BUF_BEGV (b)) + (total / 100) - 1) / (total / 100); | |
4822 | else | |
4823 | total = ((pos - BUF_BEGV (b)) * 100 + total - 1) / total; | |
a2889657 JB |
4824 | /* We can't normally display a 3-digit number, |
4825 | so get us a 2-digit number that is close. */ | |
4826 | if (total == 100) | |
4827 | total = 99; | |
4828 | sprintf (decode_mode_spec_buf, "%2d%%", total); | |
4829 | return decode_mode_spec_buf; | |
4830 | } | |
4831 | } | |
4832 | ||
8ffcb79f RS |
4833 | /* Display percentage of size above the bottom of the screen. */ |
4834 | case 'P': | |
4835 | { | |
4836 | int toppos = marker_position (w->start); | |
d39b6696 KH |
4837 | int botpos = BUF_Z (b) - XFASTINT (w->window_end_pos); |
4838 | int total = BUF_ZV (b) - BUF_BEGV (b); | |
8ffcb79f | 4839 | |
d39b6696 | 4840 | if (botpos >= BUF_ZV (b)) |
8ffcb79f | 4841 | { |
d39b6696 | 4842 | if (toppos <= BUF_BEGV (b)) |
8ffcb79f RS |
4843 | return "All"; |
4844 | else | |
4845 | return "Bottom"; | |
4846 | } | |
4847 | else | |
4848 | { | |
3c7d31b9 RS |
4849 | if (total > 1000000) |
4850 | /* Do it differently for a large value, to avoid overflow. */ | |
4851 | total = ((botpos - BUF_BEGV (b)) + (total / 100) - 1) / (total / 100); | |
4852 | else | |
4853 | total = ((botpos - BUF_BEGV (b)) * 100 + total - 1) / total; | |
8ffcb79f RS |
4854 | /* We can't normally display a 3-digit number, |
4855 | so get us a 2-digit number that is close. */ | |
4856 | if (total == 100) | |
4857 | total = 99; | |
d39b6696 | 4858 | if (toppos <= BUF_BEGV (b)) |
8ffcb79f RS |
4859 | sprintf (decode_mode_spec_buf, "Top%2d%%", total); |
4860 | else | |
4861 | sprintf (decode_mode_spec_buf, "%2d%%", total); | |
4862 | return decode_mode_spec_buf; | |
4863 | } | |
4864 | } | |
4865 | ||
1af9f229 RS |
4866 | case 's': |
4867 | /* status of process */ | |
4868 | obj = Fget_buffer_process (w->buffer); | |
4869 | if (NILP (obj)) | |
4870 | return "no process"; | |
4871 | #ifdef subprocesses | |
4872 | obj = Fsymbol_name (Fprocess_status (obj)); | |
4873 | #endif | |
4874 | break; | |
d39b6696 | 4875 | |
1af9f229 RS |
4876 | case 't': /* indicate TEXT or BINARY */ |
4877 | #ifdef MODE_LINE_BINARY_TEXT | |
4878 | return MODE_LINE_BINARY_TEXT (b); | |
4879 | #else | |
4880 | return "T"; | |
4881 | #endif | |
1c9241f5 KH |
4882 | |
4883 | case 'z': | |
4884 | /* coding-system (not including end-of-line format) */ | |
4885 | case 'Z': | |
4886 | /* coding-system (including end-of-line type) */ | |
4887 | { | |
4888 | int eol_flag = (c == 'Z'); | |
539b4d41 | 4889 | char *p = decode_mode_spec_buf; |
1c9241f5 | 4890 | |
d30e754b | 4891 | if (! FRAME_WINDOW_P (f)) |
1c9241f5 | 4892 | { |
11c52c4f RS |
4893 | /* No need to mention EOL here--the terminal never needs |
4894 | to do EOL conversion. */ | |
4895 | p = decode_mode_spec_coding (keyboard_coding.symbol, p, 0); | |
4896 | p = decode_mode_spec_coding (terminal_coding.symbol, p, 0); | |
1c9241f5 | 4897 | } |
f13c925f | 4898 | p = decode_mode_spec_coding (b->buffer_file_coding_system, |
539b4d41 | 4899 | p, eol_flag); |
f13c925f | 4900 | |
11c52c4f | 4901 | #if 0 /* This proves to be annoying; I think we can do without. -- rms. */ |
1c9241f5 KH |
4902 | #ifdef subprocesses |
4903 | obj = Fget_buffer_process (Fcurrent_buffer ()); | |
4904 | if (PROCESSP (obj)) | |
4905 | { | |
4906 | p = decode_mode_spec_coding (XPROCESS (obj)->decode_coding_system, | |
4907 | p, eol_flag); | |
4908 | p = decode_mode_spec_coding (XPROCESS (obj)->encode_coding_system, | |
4909 | p, eol_flag); | |
4910 | } | |
4911 | #endif /* subprocesses */ | |
11c52c4f | 4912 | #endif /* 0 */ |
1c9241f5 KH |
4913 | *p = 0; |
4914 | return decode_mode_spec_buf; | |
4915 | } | |
a2889657 | 4916 | } |
d39b6696 | 4917 | |
e24c997d | 4918 | if (STRINGP (obj)) |
a2889657 JB |
4919 | return (char *) XSTRING (obj)->data; |
4920 | else | |
4921 | return ""; | |
4922 | } | |
59b49f63 | 4923 | \f |
12adba34 RS |
4924 | /* Count up to COUNT lines starting from START / START_BYTE. |
4925 | But don't go beyond LIMIT_BYTE. | |
4926 | Return the number of lines thus found (always nonnegative). | |
59b49f63 | 4927 | |
12adba34 | 4928 | Set *BYTE_POS_PTR to 1 if we found COUNT lines, 0 if we hit LIMIT. */ |
59b49f63 RS |
4929 | |
4930 | static int | |
12adba34 RS |
4931 | display_count_lines (start, start_byte, limit_byte, count, byte_pos_ptr) |
4932 | int start, start_byte, limit_byte, count; | |
4933 | int *byte_pos_ptr; | |
59b49f63 | 4934 | { |
59b49f63 RS |
4935 | register unsigned char *cursor; |
4936 | unsigned char *base; | |
4937 | ||
4938 | register int ceiling; | |
4939 | register unsigned char *ceiling_addr; | |
12adba34 | 4940 | int orig_count = count; |
59b49f63 RS |
4941 | |
4942 | /* If we are not in selective display mode, | |
4943 | check only for newlines. */ | |
12adba34 RS |
4944 | int selective_display = (!NILP (current_buffer->selective_display) |
4945 | && !INTEGERP (current_buffer->selective_display)); | |
59b49f63 RS |
4946 | |
4947 | if (count > 0) | |
12adba34 RS |
4948 | { |
4949 | while (start_byte < limit_byte) | |
4950 | { | |
4951 | ceiling = BUFFER_CEILING_OF (start_byte); | |
4952 | ceiling = min (limit_byte - 1, ceiling); | |
4953 | ceiling_addr = BYTE_POS_ADDR (ceiling) + 1; | |
4954 | base = (cursor = BYTE_POS_ADDR (start_byte)); | |
4955 | while (1) | |
4956 | { | |
4957 | if (selective_display) | |
4958 | while (*cursor != '\n' && *cursor != 015 && ++cursor != ceiling_addr) | |
4959 | ; | |
4960 | else | |
4961 | while (*cursor != '\n' && ++cursor != ceiling_addr) | |
4962 | ; | |
4963 | ||
4964 | if (cursor != ceiling_addr) | |
4965 | { | |
4966 | if (--count == 0) | |
4967 | { | |
4968 | start_byte += cursor - base + 1; | |
4969 | *byte_pos_ptr = start_byte; | |
4970 | return orig_count; | |
4971 | } | |
4972 | else | |
4973 | if (++cursor == ceiling_addr) | |
4974 | break; | |
4975 | } | |
4976 | else | |
4977 | break; | |
4978 | } | |
4979 | start_byte += cursor - base; | |
4980 | } | |
4981 | } | |
59b49f63 RS |
4982 | else |
4983 | { | |
12adba34 RS |
4984 | while (start_byte > limit_byte) |
4985 | { | |
4986 | ceiling = BUFFER_FLOOR_OF (start_byte - 1); | |
4987 | ceiling = max (limit_byte, ceiling); | |
4988 | ceiling_addr = BYTE_POS_ADDR (ceiling) - 1; | |
4989 | base = (cursor = BYTE_POS_ADDR (start_byte - 1) + 1); | |
59b49f63 RS |
4990 | while (1) |
4991 | { | |
12adba34 RS |
4992 | if (selective_display) |
4993 | while (--cursor != ceiling_addr | |
4994 | && *cursor != '\n' && *cursor != 015) | |
4995 | ; | |
4996 | else | |
4997 | while (--cursor != ceiling_addr && *cursor != '\n') | |
4998 | ; | |
4999 | ||
59b49f63 RS |
5000 | if (cursor != ceiling_addr) |
5001 | { | |
5002 | if (++count == 0) | |
5003 | { | |
12adba34 RS |
5004 | start_byte += cursor - base + 1; |
5005 | *byte_pos_ptr = start_byte; | |
5006 | /* When scanning backwards, we should | |
5007 | not count the newline posterior to which we stop. */ | |
5008 | return - orig_count - 1; | |
59b49f63 RS |
5009 | } |
5010 | } | |
5011 | else | |
5012 | break; | |
5013 | } | |
12adba34 RS |
5014 | /* Here we add 1 to compensate for the last decrement |
5015 | of CURSOR, which took it past the valid range. */ | |
5016 | start_byte += cursor - base + 1; | |
59b49f63 RS |
5017 | } |
5018 | } | |
5019 | ||
12adba34 | 5020 | *byte_pos_ptr = limit_byte; |
aa6d10fa | 5021 | |
12adba34 RS |
5022 | if (count < 0) |
5023 | return - orig_count + count; | |
5024 | return orig_count - count; | |
aa6d10fa | 5025 | |
12adba34 | 5026 | } |
a2889657 JB |
5027 | \f |
5028 | /* Display STRING on one line of window W, starting at HPOS. | |
5029 | Display at position VPOS. Caller should have done get_display_line. | |
11e82b76 | 5030 | If VPOS == -1, display it as the current frame's title. |
90adcf20 | 5031 | LENGTH is the length of STRING, or -1 meaning STRING is null-terminated. |
a2889657 JB |
5032 | |
5033 | TRUNCATE is GLYPH to display at end if truncated. Zero for none. | |
5034 | ||
5035 | MINCOL is the first column ok to end at. (Pad with spaces to this col.) | |
5036 | MAXCOL is the last column ok to end at. Truncate here. | |
5037 | -1 for MINCOL or MAXCOL means no explicit minimum or maximum. | |
44fa5b1e | 5038 | Both count from the left edge of the frame, as does HPOS. |
a2889657 JB |
5039 | The right edge of W is an implicit maximum. |
5040 | If TRUNCATE is nonzero, the implicit maximum is one column before the edge. | |
5041 | ||
278feba9 RS |
5042 | OBEY_WINDOW_WIDTH says to put spaces or vertical bars |
5043 | at the place where the current window ends in this line | |
5044 | and not display anything beyond there. Otherwise, only MAXCOL | |
5045 | controls where to stop output. | |
5046 | ||
a3788d53 RS |
5047 | MULTIBYTE can be 0 meaning do not display multibyte chars, |
5048 | 1 meaning do display them, or -1 meaning obey the current buffer's | |
5049 | value of enable_multibyte_characters. | |
5050 | ||
278feba9 | 5051 | Returns ending hpos. */ |
a2889657 JB |
5052 | |
5053 | static int | |
278feba9 | 5054 | display_string (w, vpos, string, length, hpos, truncate, |
a3788d53 | 5055 | obey_window_width, mincol, maxcol, multibyte) |
a2889657 JB |
5056 | struct window *w; |
5057 | unsigned char *string; | |
90adcf20 | 5058 | int length; |
a2889657 JB |
5059 | int vpos, hpos; |
5060 | GLYPH truncate; | |
278feba9 | 5061 | int obey_window_width; |
a2889657 | 5062 | int mincol, maxcol; |
a3788d53 | 5063 | int multibyte; |
a2889657 JB |
5064 | { |
5065 | register int c; | |
d3413a53 | 5066 | int truncated; |
a2889657 JB |
5067 | register GLYPH *p1; |
5068 | int hscroll = XINT (w->hscroll); | |
253c7d2f | 5069 | int tab_width = XINT (XBUFFER (w->buffer)->tab_width); |
a2889657 JB |
5070 | register GLYPH *start; |
5071 | register GLYPH *end; | |
b1d1124b JB |
5072 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
5073 | struct frame_glyphs *desired_glyphs = FRAME_DESIRED_GLYPHS (f); | |
a2889657 JB |
5074 | GLYPH *p1start = desired_glyphs->glyphs[vpos] + hpos; |
5075 | int window_width = XFASTINT (w->width); | |
5076 | ||
5077 | /* Use the standard display table, not the window's display table. | |
5078 | We don't want the mode line in rot13. */ | |
f908610f | 5079 | register struct Lisp_Char_Table *dp = 0; |
efc63ef0 | 5080 | int i; |
a2889657 | 5081 | |
a3788d53 RS |
5082 | if (multibyte == -1) |
5083 | multibyte = !NILP (current_buffer->enable_multibyte_characters); | |
5084 | /* Now multibyte is 1 if we should display multibyte characters. */ | |
5085 | ||
f908610f RS |
5086 | if (DISP_TABLE_P (Vstandard_display_table)) |
5087 | dp = XCHAR_TABLE (Vstandard_display_table); | |
a2889657 | 5088 | |
54ff581a | 5089 | if (tab_width <= 0 || tab_width > 1000) tab_width = 8; |
a2889657 JB |
5090 | |
5091 | p1 = p1start; | |
a27062f0 | 5092 | start = desired_glyphs->glyphs[vpos]; |
a2889657 | 5093 | |
278feba9 | 5094 | if (obey_window_width) |
b1d1124b | 5095 | { |
a27062f0 | 5096 | start += XFASTINT (w->left); |
278feba9 RS |
5097 | end = start + window_width - (truncate != 0); |
5098 | ||
73f194f1 | 5099 | if (!WINDOW_RIGHTMOST_P (w)) |
b1d1124b | 5100 | { |
73f194f1 | 5101 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT (f)) |
278feba9 RS |
5102 | { |
5103 | int i; | |
b1d1124b | 5104 | |
5802e919 | 5105 | for (i = 0; i < FRAME_SCROLL_BAR_COLS (f); i++) |
278feba9 RS |
5106 | *end-- = ' '; |
5107 | } | |
73f194f1 | 5108 | else if (!FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
278feba9 | 5109 | *end-- = '|'; |
b1d1124b | 5110 | } |
b1d1124b | 5111 | } |
a2889657 | 5112 | |
278feba9 RS |
5113 | if (! obey_window_width |
5114 | || (maxcol >= 0 && end - desired_glyphs->glyphs[vpos] > maxcol)) | |
a2889657 | 5115 | end = desired_glyphs->glyphs[vpos] + maxcol; |
278feba9 | 5116 | |
efc63ef0 | 5117 | /* Store 0 in charstart for these columns. */ |
bd5dec8e | 5118 | for (i = (hpos >= 0 ? hpos : 0); i < end - p1start + hpos; i++) |
efc63ef0 RS |
5119 | desired_glyphs->charstarts[vpos][i] = 0; |
5120 | ||
a2889657 JB |
5121 | if (maxcol >= 0 && mincol > maxcol) |
5122 | mincol = maxcol; | |
5123 | ||
1c9241f5 KH |
5124 | if (length < 0) |
5125 | /* We need this value for multibyte characters. */ | |
5126 | length = strlen (string); | |
5127 | ||
d3413a53 RS |
5128 | /* We set truncated to 1 if we get stopped by trying to pass END |
5129 | (that is, trying to pass MAXCOL.) */ | |
5130 | truncated = 0; | |
5131 | while (1) | |
a2889657 | 5132 | { |
1c9241f5 KH |
5133 | int len; |
5134 | ||
5135 | if (length <= 0) | |
90adcf20 | 5136 | break; |
1c9241f5 KH |
5137 | if (multibyte) |
5138 | c = STRING_CHAR_AND_LENGTH (string, length, len); | |
5139 | else | |
5140 | c = *string, len = 1; | |
5141 | ||
5142 | string += len, length -= len; | |
90adcf20 | 5143 | |
d3413a53 RS |
5144 | if (p1 >= end) |
5145 | { | |
5146 | truncated = 1; | |
5147 | break; | |
5148 | } | |
5149 | ||
376b0e59 RS |
5150 | if (dp != 0 && VECTORP (DISP_CHAR_VECTOR (dp, c))) |
5151 | { | |
5152 | p1 = copy_part_of_rope (f, p1, start, | |
5153 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->contents, | |
5154 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->size, | |
5155 | 0); | |
5156 | } | |
5157 | else if (c >= 040 && c < 0177) | |
a2889657 JB |
5158 | { |
5159 | if (p1 >= start) | |
5160 | *p1 = c; | |
5161 | p1++; | |
5162 | } | |
5163 | else if (c == '\t') | |
5164 | { | |
5165 | do | |
5166 | { | |
5167 | if (p1 >= start && p1 < end) | |
5168 | *p1 = SPACEGLYPH; | |
5169 | p1++; | |
5170 | } | |
5171 | while ((p1 - start + hscroll - (hscroll > 0)) % tab_width); | |
5172 | } | |
ded34426 | 5173 | else if (c < 0200 && ! NILP (buffer_defaults.ctl_arrow)) |
a2889657 JB |
5174 | { |
5175 | if (p1 >= start) | |
e57bca5d KH |
5176 | *p1 = (fix_glyph |
5177 | (f, (dp && INTEGERP (DISP_CTRL_GLYPH (dp)) | |
5178 | && GLYPH_CHAR_VALID_P (XINT (DISP_CTRL_GLYPH (dp))) | |
5179 | ? XINT (DISP_CTRL_GLYPH (dp)) : '^'), | |
5180 | 0)); | |
a2889657 | 5181 | p1++; |
6e8290aa | 5182 | if (p1 >= start && p1 < end) |
a2889657 JB |
5183 | *p1 = c ^ 0100; |
5184 | p1++; | |
5185 | } | |
1c9241f5 | 5186 | else if (len == 1) |
a2889657 | 5187 | { |
1c9241f5 | 5188 | /* C is a control character or a binary byte data. */ |
a2889657 | 5189 | if (p1 >= start) |
e57bca5d KH |
5190 | *p1 = (fix_glyph |
5191 | (f, (dp && INTEGERP (DISP_ESCAPE_GLYPH (dp)) | |
5192 | && GLYPH_CHAR_VALID_P (XINT (DISP_ESCAPE_GLYPH (dp))) | |
5193 | ? XINT (DISP_ESCAPE_GLYPH (dp)) : '\\'), | |
5194 | 0)); | |
a2889657 | 5195 | p1++; |
6e8290aa | 5196 | if (p1 >= start && p1 < end) |
a2889657 JB |
5197 | *p1 = (c >> 6) + '0'; |
5198 | p1++; | |
6e8290aa | 5199 | if (p1 >= start && p1 < end) |
a2889657 JB |
5200 | *p1 = (7 & (c >> 3)) + '0'; |
5201 | p1++; | |
6e8290aa | 5202 | if (p1 >= start && p1 < end) |
a2889657 JB |
5203 | *p1 = (7 & c) + '0'; |
5204 | p1++; | |
5205 | } | |
1c9241f5 KH |
5206 | else |
5207 | { | |
5208 | /* C is a multibyte character. */ | |
5209 | int charset = CHAR_CHARSET (c); | |
5210 | int columns = (charset == CHARSET_COMPOSITION | |
5211 | ? cmpchar_table[COMPOSITE_CHAR_ID (c)]->width | |
5212 | : CHARSET_WIDTH (charset)); | |
5213 | ||
5214 | if (p1 < start) | |
5215 | { | |
5216 | /* Since we can't show the left part of C, fill all | |
5217 | columns with spaces. */ | |
5218 | columns -= start - p1; | |
5219 | p1 = start; | |
5220 | while (columns--) | |
5221 | { | |
5222 | if (p1 < end) | |
5223 | *p1 = SPACEGLYPH; | |
5224 | p1++; | |
5225 | } | |
5226 | } | |
5227 | else if (p1 + columns > end) | |
5228 | { | |
5229 | /* Since we can't show the right part of C, fill all | |
5230 | columns with TRUNCATE if TRUNCATE is specified. */ | |
5231 | if (truncate) | |
5232 | { | |
5233 | while (p1 < end) | |
5234 | *p1++ = fix_glyph (f, truncate, 0); | |
5235 | /* And tell the line is truncated. */ | |
5236 | truncated = 1; | |
5237 | } | |
5238 | break; | |
5239 | } | |
5240 | else | |
5241 | { | |
5242 | /* We can show the whole glyph of C. */ | |
5243 | *p1++ = c; | |
5244 | while (--columns) | |
5245 | *p1++ = c | GLYPH_MASK_PADDING; | |
5246 | } | |
5247 | } | |
a2889657 JB |
5248 | } |
5249 | ||
d3413a53 | 5250 | if (truncated) |
a2889657 JB |
5251 | { |
5252 | p1 = end; | |
278feba9 | 5253 | if (truncate) *p1++ = fix_glyph (f, truncate, 0); |
a2889657 JB |
5254 | } |
5255 | else if (mincol >= 0) | |
5256 | { | |
5257 | end = desired_glyphs->glyphs[vpos] + mincol; | |
5258 | while (p1 < end) | |
5259 | *p1++ = SPACEGLYPH; | |
5260 | } | |
5261 | ||
5262 | { | |
5263 | register int len = p1 - desired_glyphs->glyphs[vpos]; | |
5264 | ||
5265 | if (len > desired_glyphs->used[vpos]) | |
5266 | desired_glyphs->used[vpos] = len; | |
5267 | desired_glyphs->glyphs[vpos][desired_glyphs->used[vpos]] = 0; | |
5268 | ||
5269 | return len; | |
5270 | } | |
5271 | } | |
5272 | \f | |
642eefc6 RS |
5273 | /* This is like a combination of memq and assq. |
5274 | Return 1 if PROPVAL appears as an element of LIST | |
5275 | or as the car of an element of LIST. | |
af460d46 RS |
5276 | If PROPVAL is a list, compare each element against LIST |
5277 | in that way, and return 1 if any element of PROPVAL is found in LIST. | |
642eefc6 RS |
5278 | Otherwise return 0. |
5279 | This function cannot quit. */ | |
5280 | ||
5281 | int | |
5282 | invisible_p (propval, list) | |
5283 | register Lisp_Object propval; | |
5284 | Lisp_Object list; | |
5285 | { | |
af460d46 RS |
5286 | register Lisp_Object tail, proptail; |
5287 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
642eefc6 RS |
5288 | { |
5289 | register Lisp_Object tem; | |
af460d46 | 5290 | tem = XCONS (tail)->car; |
642eefc6 RS |
5291 | if (EQ (propval, tem)) |
5292 | return 1; | |
5293 | if (CONSP (tem) && EQ (propval, XCONS (tem)->car)) | |
5294 | return 1; | |
5295 | } | |
af460d46 RS |
5296 | if (CONSP (propval)) |
5297 | for (proptail = propval; CONSP (proptail); | |
5298 | proptail = XCONS (proptail)->cdr) | |
5299 | { | |
5300 | Lisp_Object propelt; | |
5301 | propelt = XCONS (proptail)->car; | |
5302 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
5303 | { | |
5304 | register Lisp_Object tem; | |
5305 | tem = XCONS (tail)->car; | |
5306 | if (EQ (propelt, tem)) | |
5307 | return 1; | |
5308 | if (CONSP (tem) && EQ (propelt, XCONS (tem)->car)) | |
5309 | return 1; | |
5310 | } | |
5311 | } | |
642eefc6 RS |
5312 | return 0; |
5313 | } | |
5314 | ||
5315 | /* Return 1 if PROPVAL appears as the car of an element of LIST | |
5316 | and the cdr of that element is non-nil. | |
af460d46 RS |
5317 | If PROPVAL is a list, check each element of PROPVAL in that way, |
5318 | and the first time some element is found, | |
5319 | return 1 if the cdr of that element is non-nil. | |
642eefc6 RS |
5320 | Otherwise return 0. |
5321 | This function cannot quit. */ | |
5322 | ||
5323 | int | |
5324 | invisible_ellipsis_p (propval, list) | |
5325 | register Lisp_Object propval; | |
5326 | Lisp_Object list; | |
5327 | { | |
af460d46 RS |
5328 | register Lisp_Object tail, proptail; |
5329 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
642eefc6 RS |
5330 | { |
5331 | register Lisp_Object tem; | |
af460d46 | 5332 | tem = XCONS (tail)->car; |
642eefc6 RS |
5333 | if (CONSP (tem) && EQ (propval, XCONS (tem)->car)) |
5334 | return ! NILP (XCONS (tem)->cdr); | |
5335 | } | |
af460d46 RS |
5336 | if (CONSP (propval)) |
5337 | for (proptail = propval; CONSP (proptail); | |
5338 | proptail = XCONS (proptail)->cdr) | |
5339 | { | |
5340 | Lisp_Object propelt; | |
5341 | propelt = XCONS (proptail)->car; | |
5342 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
5343 | { | |
5344 | register Lisp_Object tem; | |
5345 | tem = XCONS (tail)->car; | |
5346 | if (CONSP (tem) && EQ (propelt, XCONS (tem)->car)) | |
5347 | return ! NILP (XCONS (tem)->cdr); | |
5348 | } | |
5349 | } | |
642eefc6 RS |
5350 | return 0; |
5351 | } | |
5352 | \f | |
a2889657 JB |
5353 | void |
5354 | syms_of_xdisp () | |
5355 | { | |
cf074754 RS |
5356 | staticpro (&Qmenu_bar_update_hook); |
5357 | Qmenu_bar_update_hook = intern ("menu-bar-update-hook"); | |
5358 | ||
d46fb96a | 5359 | staticpro (&Qoverriding_terminal_local_map); |
7079aefa | 5360 | Qoverriding_terminal_local_map = intern ("overriding-terminal-local-map"); |
d46fb96a | 5361 | |
399164b4 KH |
5362 | staticpro (&Qoverriding_local_map); |
5363 | Qoverriding_local_map = intern ("overriding-local-map"); | |
5364 | ||
75c43375 RS |
5365 | staticpro (&Qwindow_scroll_functions); |
5366 | Qwindow_scroll_functions = intern ("window-scroll-functions"); | |
5367 | ||
e0bfbde6 RS |
5368 | staticpro (&Qredisplay_end_trigger_functions); |
5369 | Qredisplay_end_trigger_functions = intern ("redisplay-end-trigger-functions"); | |
67481ae5 | 5370 | |
2e54982e RS |
5371 | staticpro (&Qinhibit_point_motion_hooks); |
5372 | Qinhibit_point_motion_hooks = intern ("inhibit-point-motion-hooks"); | |
5373 | ||
a2889657 JB |
5374 | staticpro (&last_arrow_position); |
5375 | staticpro (&last_arrow_string); | |
5376 | last_arrow_position = Qnil; | |
5377 | last_arrow_string = Qnil; | |
5378 | ||
5379 | DEFVAR_LISP ("global-mode-string", &Vglobal_mode_string, | |
8c45d522 | 5380 | "String (or mode line construct) included (normally) in `mode-line-format'."); |
a2889657 JB |
5381 | Vglobal_mode_string = Qnil; |
5382 | ||
5383 | DEFVAR_LISP ("overlay-arrow-position", &Voverlay_arrow_position, | |
5384 | "Marker for where to display an arrow on top of the buffer text.\n\ | |
5385 | This must be the beginning of a line in order to work.\n\ | |
5386 | See also `overlay-arrow-string'."); | |
5387 | Voverlay_arrow_position = Qnil; | |
5388 | ||
5389 | DEFVAR_LISP ("overlay-arrow-string", &Voverlay_arrow_string, | |
5390 | "String to display as an arrow. See also `overlay-arrow-position'."); | |
5391 | Voverlay_arrow_string = Qnil; | |
5392 | ||
5393 | DEFVAR_INT ("scroll-step", &scroll_step, | |
5394 | "*The number of lines to try scrolling a window by when point moves out.\n\ | |
44fa5b1e JB |
5395 | If that fails to bring point back on frame, point is centered instead.\n\ |
5396 | If this is zero, point is always centered after it moves off frame."); | |
a2889657 | 5397 | |
0789adb2 RS |
5398 | DEFVAR_INT ("scroll-conservatively", &scroll_conservatively, |
5399 | "*Scroll up to this many lines, to bring point back on screen."); | |
5400 | scroll_conservatively = 0; | |
5401 | ||
9afd2168 RS |
5402 | DEFVAR_INT ("scroll-margin", &scroll_margin, |
5403 | "*Number of lines of margin at the top and bottom of a window.\n\ | |
5404 | Recenter the window whenever point gets within this many lines\n\ | |
5405 | of the top or bottom of the window."); | |
5406 | scroll_margin = 0; | |
5407 | ||
a2889657 JB |
5408 | DEFVAR_INT ("debug-end-pos", &debug_end_pos, "Don't ask"); |
5409 | ||
5410 | DEFVAR_BOOL ("truncate-partial-width-windows", | |
5411 | &truncate_partial_width_windows, | |
44fa5b1e | 5412 | "*Non-nil means truncate lines in all windows less than full frame wide."); |
a2889657 JB |
5413 | truncate_partial_width_windows = 1; |
5414 | ||
5415 | DEFVAR_BOOL ("mode-line-inverse-video", &mode_line_inverse_video, | |
5416 | "*Non-nil means use inverse video for the mode line."); | |
5417 | mode_line_inverse_video = 1; | |
aa6d10fa RS |
5418 | |
5419 | DEFVAR_INT ("line-number-display-limit", &line_number_display_limit, | |
db4f2bfa KH |
5420 | "*Maximum buffer size (in characters) for line number display\n\ |
5421 | If the buffer is bigger than this, the line number does not appear\n\ | |
5422 | in the mode line.."); | |
aa6d10fa | 5423 | line_number_display_limit = 1000000; |
fba9ce76 RS |
5424 | |
5425 | DEFVAR_BOOL ("highlight-nonselected-windows", &highlight_nonselected_windows, | |
5426 | "*Non-nil means highlight region even in nonselected windows."); | |
293a54ce | 5427 | highlight_nonselected_windows = 0; |
d39b6696 KH |
5428 | |
5429 | DEFVAR_BOOL ("multiple-frames", &multiple_frames, | |
3450d04c KH |
5430 | "Non-nil if more than one frame is visible on this display.\n\ |
5431 | Minibuffer-only frames don't count, but iconified frames do.\n\ | |
4c2eb242 RS |
5432 | This variable is not guaranteed to be accurate except while processing\n\ |
5433 | `frame-title-format' and `icon-title-format'."); | |
d39b6696 KH |
5434 | |
5435 | DEFVAR_LISP ("frame-title-format", &Vframe_title_format, | |
5436 | "Template for displaying the titlebar of visible frames.\n\ | |
5437 | \(Assuming the window manager supports this feature.)\n\ | |
5438 | This variable has the same structure as `mode-line-format' (which see),\n\ | |
5439 | and is used only on frames for which no explicit name has been set\n\ | |
5440 | \(see `modify-frame-parameters')."); | |
5441 | DEFVAR_LISP ("icon-title-format", &Vicon_title_format, | |
5442 | "Template for displaying the titlebar of an iconified frame.\n\ | |
5443 | \(Assuming the window manager supports this feature.)\n\ | |
5444 | This variable has the same structure as `mode-line-format' (which see),\n\ | |
5445 | and is used only on frames for which no explicit name has been set\n\ | |
5446 | \(see `modify-frame-parameters')."); | |
5447 | Vicon_title_format | |
5448 | = Vframe_title_format | |
5449 | = Fcons (intern ("multiple-frames"), | |
5450 | Fcons (build_string ("%b"), | |
5451 | Fcons (Fcons (build_string (""), | |
5452 | Fcons (intern ("invocation-name"), | |
5453 | Fcons (build_string ("@"), | |
5454 | Fcons (intern ("system-name"), | |
5455 | Qnil)))), | |
5456 | Qnil))); | |
5992c4f7 KH |
5457 | |
5458 | DEFVAR_LISP ("message-log-max", &Vmessage_log_max, | |
5459 | "Maximum number of lines to keep in the message log buffer.\n\ | |
5460 | If nil, disable message logging. If t, log messages but don't truncate\n\ | |
5461 | the buffer when it becomes large."); | |
5462 | XSETFASTINT (Vmessage_log_max, 50); | |
08b610e4 RS |
5463 | |
5464 | DEFVAR_LISP ("window-size-change-functions", &Vwindow_size_change_functions, | |
5465 | "Functions called before redisplay, if window sizes have changed.\n\ | |
5466 | The value should be a list of functions that take one argument.\n\ | |
5467 | Just before redisplay, for each frame, if any of its windows have changed\n\ | |
5468 | size since the last redisplay, or have been split or deleted,\n\ | |
5469 | all the functions in the list are called, with the frame as argument."); | |
5470 | Vwindow_size_change_functions = Qnil; | |
75c43375 RS |
5471 | |
5472 | DEFVAR_LISP ("window-scroll-functions", &Vwindow_scroll_functions, | |
010494d0 | 5473 | "List of functions to call before redisplaying a window with scrolling.\n\ |
75c43375 | 5474 | Each function is called with two arguments, the window\n\ |
8d9583b0 RS |
5475 | and its new display-start position. Note that the value of `window-end'\n\ |
5476 | is not valid when these functions are called."); | |
75c43375 | 5477 | Vwindow_scroll_functions = Qnil; |
010494d0 KH |
5478 | |
5479 | DEFVAR_INT ("minibuffer-scroll-overlap", &minibuffer_scroll_overlap, | |
5480 | "*Number of characters of overlap when scrolling a one-line window.\n\ | |
5481 | This commonly affects the minibuffer window, hence the name of the variable."); | |
5482 | minibuffer_scroll_overlap = 20; | |
a2889657 JB |
5483 | } |
5484 | ||
5485 | /* initialize the window system */ | |
dfcf069d | 5486 | void |
a2889657 JB |
5487 | init_xdisp () |
5488 | { | |
5489 | Lisp_Object root_window; | |
5490 | #ifndef COMPILER_REGISTER_BUG | |
5491 | register | |
5492 | #endif /* COMPILER_REGISTER_BUG */ | |
5493 | struct window *mini_w; | |
5494 | ||
5495 | this_line_bufpos = 0; | |
5496 | ||
5497 | mini_w = XWINDOW (minibuf_window); | |
11e82b76 | 5498 | root_window = FRAME_ROOT_WINDOW (XFRAME (WINDOW_FRAME (mini_w))); |
a2889657 JB |
5499 | |
5500 | echo_area_glyphs = 0; | |
5501 | previous_echo_glyphs = 0; | |
5502 | ||
5503 | if (!noninteractive) | |
5504 | { | |
44fa5b1e | 5505 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (root_window))); |
12c226c5 RS |
5506 | XSETFASTINT (XWINDOW (root_window)->top, FRAME_MENU_BAR_LINES (f)); |
5507 | set_window_height (root_window, | |
5508 | FRAME_HEIGHT (f) - 1 - FRAME_MENU_BAR_LINES (f), | |
5509 | 0); | |
c2213350 | 5510 | XSETFASTINT (mini_w->top, FRAME_HEIGHT (f) - 1); |
a2889657 JB |
5511 | set_window_height (minibuf_window, 1, 0); |
5512 | ||
c2213350 KH |
5513 | XSETFASTINT (XWINDOW (root_window)->width, FRAME_WIDTH (f)); |
5514 | XSETFASTINT (mini_w->width, FRAME_WIDTH (f)); | |
a2889657 JB |
5515 | } |
5516 | } |