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 | ||
6d55d620 | 45 | #ifdef HAVE_X_WINDOWS |
dfcf069d AS |
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 | |
735c094c KH |
69 | /* Non-nil means don't actually do any redisplay. */ |
70 | ||
71 | Lisp_Object Vinhibit_redisplay, Qinhibit_redisplay; | |
72 | ||
f88eb0b6 | 73 | /* Nonzero means print newline to stdout before next minibuffer message. */ |
a2889657 JB |
74 | |
75 | int noninteractive_need_newline; | |
76 | ||
f88eb0b6 KH |
77 | /* Nonzero means print newline to message log before next message. */ |
78 | ||
3c6595e0 | 79 | static int message_log_need_newline; |
f88eb0b6 | 80 | |
a2889657 JB |
81 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
82 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
210e752f KH |
83 | #define minmax(floor, val, ceil) \ |
84 | ((val) < (floor) ? (floor) : (val) > (ceil) ? (ceil) : (val)) | |
a2889657 JB |
85 | |
86 | /* The buffer position of the first character appearing | |
44fa5b1e JB |
87 | entirely or partially on the current frame line. |
88 | Or zero, which disables the optimization for the current frame line. */ | |
a2889657 JB |
89 | static int this_line_bufpos; |
90 | ||
91 | /* Number of characters past the end of this line, | |
92 | including the terminating newline */ | |
93 | static int this_line_endpos; | |
94 | ||
44fa5b1e | 95 | /* The vertical position of this frame line. */ |
a2889657 JB |
96 | static int this_line_vpos; |
97 | ||
44fa5b1e | 98 | /* Hpos value for start of display on this frame line. |
a2889657 JB |
99 | Usually zero, but negative if first character really began |
100 | on previous line */ | |
101 | static int this_line_start_hpos; | |
102 | ||
103 | /* Buffer that this_line variables are describing. */ | |
104 | static struct buffer *this_line_buffer; | |
105 | ||
a2889657 | 106 | /* Value of echo_area_glyphs when it was last acted on. |
44fa5b1e | 107 | If this is nonzero, there is a message on the frame |
a2889657 JB |
108 | in the minibuffer and it should be erased as soon |
109 | as it is no longer requested to appear. */ | |
110 | char *previous_echo_glyphs; | |
111 | ||
44fa5b1e | 112 | /* Nonzero means truncate lines in all windows less wide than the frame */ |
a2889657 JB |
113 | int truncate_partial_width_windows; |
114 | ||
d39b6696 KH |
115 | /* Nonzero means we have more than one non-minibuffer-only frame. |
116 | Not guaranteed to be accurate except while parsing frame-title-format. */ | |
117 | int multiple_frames; | |
118 | ||
a2889657 JB |
119 | Lisp_Object Vglobal_mode_string; |
120 | ||
121 | /* Marker for where to display an arrow on top of the buffer text. */ | |
122 | Lisp_Object Voverlay_arrow_position; | |
123 | ||
124 | /* String to display for the arrow. */ | |
125 | Lisp_Object Voverlay_arrow_string; | |
126 | ||
d45de95b RS |
127 | /* Values of those variables at last redisplay. |
128 | However, if Voverlay_arrow_position is a marker, | |
129 | last_arrow_position is its numerical position. */ | |
130 | static Lisp_Object last_arrow_position, last_arrow_string; | |
131 | ||
d39b6696 KH |
132 | /* Like mode-line-format, but for the titlebar on a visible frame. */ |
133 | Lisp_Object Vframe_title_format; | |
134 | ||
135 | /* Like mode-line-format, but for the titlebar on an iconified frame. */ | |
136 | Lisp_Object Vicon_title_format; | |
137 | ||
08b610e4 RS |
138 | /* List of functions to call when a window's size changes. These |
139 | functions get one arg, a frame on which one or more windows' sizes | |
140 | have changed. */ | |
141 | static Lisp_Object Vwindow_size_change_functions; | |
142 | ||
cf074754 RS |
143 | Lisp_Object Qmenu_bar_update_hook; |
144 | ||
a2889657 JB |
145 | /* Nonzero if overlay arrow has been displayed once in this window. */ |
146 | static int overlay_arrow_seen; | |
147 | ||
ca26e1c8 KH |
148 | /* Nonzero if visible end of buffer has already been displayed once |
149 | in this window. (We need this variable in case there are overlay | |
150 | strings that get displayed there.) */ | |
151 | static int zv_strings_seen; | |
152 | ||
fba9ce76 RS |
153 | /* Nonzero means highlight the region even in nonselected windows. */ |
154 | static int highlight_nonselected_windows; | |
155 | ||
44fa5b1e | 156 | /* If cursor motion alone moves point off frame, |
a2889657 | 157 | Try scrolling this many lines up or down if that will bring it back. */ |
14510fee | 158 | static int scroll_step; |
a2889657 | 159 | |
0789adb2 RS |
160 | /* Non-0 means scroll just far enough to bring point back on the screen, |
161 | when appropriate. */ | |
162 | static int scroll_conservatively; | |
163 | ||
9afd2168 RS |
164 | /* Recenter the window whenever point gets within this many lines |
165 | of the top or bottom of the window. */ | |
166 | int scroll_margin; | |
167 | ||
010494d0 KH |
168 | /* Number of characters of overlap to show, |
169 | when scrolling a one-line window such as a minibuffer. */ | |
170 | static int minibuffer_scroll_overlap; | |
171 | ||
a2889657 JB |
172 | /* Nonzero if try_window_id has made blank lines at window bottom |
173 | since the last redisplay that paused */ | |
174 | static int blank_end_of_window; | |
175 | ||
42640f83 RS |
176 | /* Number of windows showing the buffer of the selected window |
177 | (or another buffer with the same base buffer). | |
a2889657 JB |
178 | keyboard.c refers to this. */ |
179 | int buffer_shared; | |
180 | ||
44fa5b1e | 181 | /* display_text_line sets these to the frame position (origin 0) of point, |
a2889657 JB |
182 | whether the window is selected or not. |
183 | Set one to -1 first to determine whether point was found afterwards. */ | |
184 | ||
185 | static int cursor_vpos; | |
186 | static int cursor_hpos; | |
187 | ||
14510fee | 188 | static int debug_end_pos; |
a2889657 JB |
189 | |
190 | /* Nonzero means display mode line highlighted */ | |
191 | int mode_line_inverse_video; | |
192 | ||
e9874cee | 193 | static void redisplay_internal (); |
ff6c30e5 | 194 | static int message_log_check_duplicate (); |
a2889657 JB |
195 | static void echo_area_display (); |
196 | void mark_window_display_accurate (); | |
197 | static void redisplay_windows (); | |
198 | static void redisplay_window (); | |
90adcf20 | 199 | static void update_menu_bar (); |
a2889657 JB |
200 | static void try_window (); |
201 | static int try_window_id (); | |
202 | static struct position *display_text_line (); | |
203 | static void display_mode_line (); | |
204 | static int display_mode_element (); | |
a2889657 JB |
205 | static char *decode_mode_spec (); |
206 | static int display_string (); | |
7ce2c095 | 207 | static void display_menu_bar (); |
aa6d10fa | 208 | static int display_count_lines (); |
a2889657 JB |
209 | |
210 | /* Prompt to display in front of the minibuffer contents */ | |
8c5b6a0a | 211 | Lisp_Object minibuf_prompt; |
a2889657 JB |
212 | |
213 | /* Width in columns of current minibuffer prompt. */ | |
214 | int minibuf_prompt_width; | |
215 | ||
216 | /* Message to display instead of minibuffer contents | |
217 | This is what the functions error and message make, | |
218 | and command echoing uses it as well. | |
219 | It overrides the minibuf_prompt as well as the buffer. */ | |
220 | char *echo_area_glyphs; | |
221 | ||
90adcf20 RS |
222 | /* This is the length of the message in echo_area_glyphs. */ |
223 | int echo_area_glyphs_length; | |
224 | ||
73af359d RS |
225 | /* This is the window where the echo area message was displayed. |
226 | It is always a minibuffer window, but it may not be the | |
227 | same window currently active as a minibuffer. */ | |
228 | Lisp_Object echo_area_window; | |
229 | ||
a3788d53 RS |
230 | /* Nonzero means multibyte characters were enabled when the echo area |
231 | message was specified. */ | |
232 | int message_enable_multibyte; | |
233 | ||
a2889657 JB |
234 | /* true iff we should redraw the mode lines on the next redisplay */ |
235 | int update_mode_lines; | |
236 | ||
237 | /* Smallest number of characters before the gap | |
238 | at any time since last redisplay that finished. | |
239 | Valid for current buffer when try_window_id can be called. */ | |
240 | int beg_unchanged; | |
241 | ||
242 | /* Smallest number of characters after the gap | |
243 | at any time since last redisplay that finished. | |
244 | Valid for current buffer when try_window_id can be called. */ | |
245 | int end_unchanged; | |
246 | ||
247 | /* MODIFF as of last redisplay that finished; | |
8850a573 RS |
248 | if it matches MODIFF, and overlay_unchanged_modified |
249 | matches OVERLAY_MODIFF, that means beg_unchanged and end_unchanged | |
a2889657 JB |
250 | contain no useful information */ |
251 | int unchanged_modified; | |
252 | ||
8850a573 RS |
253 | /* OVERLAY_MODIFF as of last redisplay that finished. */ |
254 | int overlay_unchanged_modified; | |
255 | ||
a2889657 JB |
256 | /* Nonzero if window sizes or contents have changed |
257 | since last redisplay that finished */ | |
258 | int windows_or_buffers_changed; | |
259 | ||
aa6d10fa RS |
260 | /* Nonzero after display_mode_line if %l was used |
261 | and it displayed a line number. */ | |
262 | int line_number_displayed; | |
263 | ||
264 | /* Maximum buffer size for which to display line numbers. */ | |
14510fee | 265 | static int line_number_display_limit; |
5992c4f7 KH |
266 | |
267 | /* Number of lines to keep in the message log buffer. | |
268 | t means infinite. nil means don't log at all. */ | |
269 | Lisp_Object Vmessage_log_max; | |
d45de95b RS |
270 | |
271 | #define COERCE_MARKER(X) \ | |
377dbd97 | 272 | (MARKERP ((X)) ? Fmarker_position (X) : (X)) |
12adba34 RS |
273 | |
274 | static int pos_tab_offset P_ ((struct window *, int, int)); | |
a2889657 | 275 | \f |
1adc55de RS |
276 | /* Output a newline in the *Messages* buffer if "needs" one. */ |
277 | ||
3c6595e0 KH |
278 | void |
279 | message_log_maybe_newline () | |
280 | { | |
281 | if (message_log_need_newline) | |
0a9dc68b | 282 | message_dolog ("", 0, 1, 0); |
3c6595e0 KH |
283 | } |
284 | ||
285 | ||
d917be71 KH |
286 | /* Add a string to the message log, optionally terminated with a newline. |
287 | This function calls low-level routines in order to bypass text property | |
0a9dc68b RS |
288 | hooks, etc. which might not be safe to run. |
289 | MULTIBYTE, if nonzero, means interpret the contents of M as multibyte. */ | |
90adcf20 RS |
290 | |
291 | void | |
0a9dc68b | 292 | message_dolog (m, len, nlflag, multibyte) |
90adcf20 | 293 | char *m; |
0a9dc68b | 294 | int len, nlflag, multibyte; |
5992c4f7 | 295 | { |
f88eb0b6 | 296 | if (!NILP (Vmessage_log_max)) |
5992c4f7 KH |
297 | { |
298 | struct buffer *oldbuf; | |
12adba34 | 299 | Lisp_Object oldpoint, oldbegv, oldzv; |
69f033ab | 300 | int old_windows_or_buffers_changed = windows_or_buffers_changed; |
bab29e15 RS |
301 | int point_at_end = 0; |
302 | int zv_at_end = 0; | |
e18a235e | 303 | Lisp_Object old_deactivate_mark, tem; |
43c158ed | 304 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
5992c4f7 | 305 | |
84dd0ae5 | 306 | old_deactivate_mark = Vdeactivate_mark; |
5992c4f7 | 307 | oldbuf = current_buffer; |
3c6595e0 | 308 | Fset_buffer (Fget_buffer_create (build_string ("*Messages*"))); |
16c300fb | 309 | current_buffer->undo_list = Qt; |
12adba34 RS |
310 | |
311 | oldpoint = Fpoint_marker (); | |
312 | oldbegv = Fpoint_min_marker (); | |
313 | oldzv = Fpoint_max_marker (); | |
43c158ed | 314 | GCPRO4 (oldpoint, oldbegv, oldzv, old_deactivate_mark); |
12adba34 | 315 | |
6f0429a9 | 316 | if (PT == Z) |
bab29e15 | 317 | point_at_end = 1; |
6f0429a9 | 318 | if (ZV == Z) |
bab29e15 | 319 | zv_at_end = 1; |
12adba34 RS |
320 | |
321 | BEGV = BEG; | |
322 | BEGV_BYTE = BEG_BYTE; | |
323 | ZV = Z; | |
324 | ZV_BYTE = Z_BYTE; | |
325 | TEMP_SET_PT_BOTH (Z, Z_BYTE); | |
bab29e15 RS |
326 | |
327 | /* Insert the string--maybe converting multibyte to single byte | |
328 | or vice versa, so that all the text fits the buffer. */ | |
0a9dc68b | 329 | if (multibyte |
bab29e15 RS |
330 | && NILP (current_buffer->enable_multibyte_characters)) |
331 | { | |
a45dc86e KH |
332 | int i, c, nbytes; |
333 | unsigned char work[1]; | |
bab29e15 RS |
334 | /* Convert a multibyte string to single-byte |
335 | for the *Message* buffer. */ | |
a45dc86e | 336 | for (i = 0; i < len; i += nbytes) |
bab29e15 | 337 | { |
a45dc86e KH |
338 | c = STRING_CHAR_AND_LENGTH (m + i, len - i, nbytes); |
339 | work[0] = (SINGLE_BYTE_CHAR_P (c) | |
340 | ? c | |
341 | : multibyte_char_to_unibyte (c, Qnil)); | |
342 | insert_1_both (work, 1, 1, 1, 0, 0); | |
bab29e15 RS |
343 | } |
344 | } | |
0a9dc68b | 345 | else if (! multibyte |
bab29e15 RS |
346 | && ! NILP (current_buffer->enable_multibyte_characters)) |
347 | { | |
a45dc86e | 348 | int i, c, nbytes; |
bd4f53cc | 349 | unsigned char *msg = (unsigned char *) m; |
a45dc86e | 350 | unsigned char *str, work[4]; |
bab29e15 RS |
351 | /* Convert a single-byte string to multibyte |
352 | for the *Message* buffer. */ | |
a45dc86e | 353 | for (i = 0; i < len; i++) |
bab29e15 | 354 | { |
a45dc86e KH |
355 | c = unibyte_char_to_multibyte (msg[i]); |
356 | nbytes = CHAR_STRING (c, work, str); | |
357 | insert_1_both (work, 1, nbytes, 1, 0, 0); | |
bab29e15 RS |
358 | } |
359 | } | |
360 | else if (len) | |
12adba34 | 361 | insert_1 (m, len, 1, 0, 0); |
bab29e15 | 362 | |
f88eb0b6 | 363 | if (nlflag) |
5992c4f7 | 364 | { |
12adba34 RS |
365 | int this_bol, this_bol_byte, prev_bol, prev_bol_byte, dup; |
366 | insert_1 ("\n", 1, 1, 0, 0); | |
367 | ||
368 | scan_newline (Z, Z_BYTE, BEG, BEG_BYTE, -2, 0); | |
369 | this_bol = PT; | |
370 | this_bol_byte = PT_BYTE; | |
ff6c30e5 | 371 | |
ff6c30e5 KH |
372 | if (this_bol > BEG) |
373 | { | |
6f0429a9 | 374 | scan_newline (PT, PT_BYTE, BEG, BEG_BYTE, -2, 0); |
12adba34 RS |
375 | prev_bol = PT; |
376 | prev_bol_byte = PT_BYTE; | |
377 | ||
2d3ae3f0 KH |
378 | dup = message_log_check_duplicate (prev_bol, prev_bol_byte, |
379 | this_bol, this_bol_byte); | |
ff6c30e5 KH |
380 | if (dup) |
381 | { | |
bc69581b KH |
382 | del_range_both (prev_bol, prev_bol_byte, |
383 | this_bol, this_bol_byte, 0); | |
ff6c30e5 KH |
384 | if (dup > 1) |
385 | { | |
386 | char dupstr[40]; | |
387 | int duplen; | |
388 | ||
389 | /* If you change this format, don't forget to also | |
390 | change message_log_check_duplicate. */ | |
391 | sprintf (dupstr, " [%d times]", dup); | |
392 | duplen = strlen (dupstr); | |
12adba34 RS |
393 | TEMP_SET_PT_BOTH (Z - 1, Z_BYTE - 1); |
394 | insert_1 (dupstr, duplen, 1, 0, 1); | |
ff6c30e5 KH |
395 | } |
396 | } | |
397 | } | |
398 | ||
399 | if (NATNUMP (Vmessage_log_max)) | |
400 | { | |
12adba34 RS |
401 | scan_newline (Z, Z_BYTE, BEG, BEG_BYTE, |
402 | -XFASTINT (Vmessage_log_max) - 1, 0); | |
bc69581b | 403 | del_range_both (BEG, BEG_BYTE, PT, PT_BYTE, 0); |
ff6c30e5 | 404 | } |
5992c4f7 | 405 | } |
12adba34 RS |
406 | BEGV = XMARKER (oldbegv)->charpos; |
407 | BEGV_BYTE = marker_byte_position (oldbegv); | |
408 | ||
bab29e15 | 409 | if (zv_at_end) |
12adba34 RS |
410 | { |
411 | ZV = Z; | |
412 | ZV_BYTE = Z_BYTE; | |
413 | } | |
bab29e15 | 414 | else |
12adba34 RS |
415 | { |
416 | ZV = XMARKER (oldzv)->charpos; | |
417 | ZV_BYTE = marker_byte_position (oldzv); | |
418 | } | |
419 | ||
bab29e15 | 420 | if (point_at_end) |
12adba34 | 421 | TEMP_SET_PT_BOTH (Z, Z_BYTE); |
bab29e15 | 422 | else |
a45dc86e KH |
423 | /* We can't do Fgoto_char (oldpoint) because it will run some |
424 | Lisp code. */ | |
425 | TEMP_SET_PT_BOTH (XMARKER (oldpoint)->charpos, | |
426 | XMARKER (oldpoint)->bytepos); | |
12adba34 | 427 | |
43c158ed | 428 | UNGCPRO; |
12adba34 RS |
429 | free_marker (oldpoint); |
430 | free_marker (oldbegv); | |
431 | free_marker (oldzv); | |
432 | ||
e18a235e | 433 | tem = Fget_buffer_window (Fcurrent_buffer (), Qt); |
5992c4f7 | 434 | set_buffer_internal (oldbuf); |
e18a235e RS |
435 | if (NILP (tem)) |
436 | windows_or_buffers_changed = old_windows_or_buffers_changed; | |
3c6595e0 | 437 | message_log_need_newline = !nlflag; |
84dd0ae5 | 438 | Vdeactivate_mark = old_deactivate_mark; |
5992c4f7 | 439 | } |
f88eb0b6 KH |
440 | } |
441 | ||
ff6c30e5 KH |
442 | /* We are at the end of the buffer after just having inserted a newline. |
443 | (Note: We depend on the fact we won't be crossing the gap.) | |
444 | Check to see if the most recent message looks a lot like the previous one. | |
445 | Return 0 if different, 1 if the new one should just replace it, or a | |
446 | value N > 1 if we should also append " [N times]". */ | |
f82aff7c | 447 | |
ff6c30e5 | 448 | static int |
12adba34 | 449 | message_log_check_duplicate (prev_bol, prev_bol_byte, this_bol, this_bol_byte) |
ff6c30e5 | 450 | int prev_bol, this_bol; |
12adba34 | 451 | int prev_bol_byte, this_bol_byte; |
ff6c30e5 KH |
452 | { |
453 | int i; | |
45726261 | 454 | int len = Z_BYTE - 1 - this_bol_byte; |
ff6c30e5 | 455 | int seen_dots = 0; |
12adba34 RS |
456 | unsigned char *p1 = BUF_BYTE_ADDRESS (current_buffer, prev_bol_byte); |
457 | unsigned char *p2 = BUF_BYTE_ADDRESS (current_buffer, this_bol_byte); | |
ff6c30e5 KH |
458 | |
459 | for (i = 0; i < len; i++) | |
460 | { | |
461 | if (i >= 3 && p1[i-3] == '.' && p1[i-2] == '.' && p1[i-1] == '.' | |
462 | && p1[i] != '\n') | |
463 | seen_dots = 1; | |
464 | if (p1[i] != p2[i]) | |
465 | return seen_dots; | |
466 | } | |
467 | p1 += len; | |
468 | if (*p1 == '\n') | |
469 | return 2; | |
470 | if (*p1++ == ' ' && *p1++ == '[') | |
471 | { | |
472 | int n = 0; | |
473 | while (*p1 >= '0' && *p1 <= '9') | |
474 | n = n * 10 + *p1++ - '0'; | |
475 | if (strncmp (p1, " times]\n", 8) == 0) | |
476 | return n+1; | |
477 | } | |
478 | return 0; | |
479 | } | |
1adc55de | 480 | \f |
f88eb0b6 | 481 | /* Display an echo area message M with a specified length of LEN chars. |
1adc55de | 482 | The string may include null characters. If M is 0, clear out any |
f88eb0b6 | 483 | existing message, and let the minibuffer text show through. |
1adc55de RS |
484 | |
485 | The buffer M must continue to exist until after the echo area | |
486 | gets cleared or some other message gets displayed there. | |
487 | ||
488 | Do not pass text that is stored in a Lisp string. | |
489 | Do not pass text in a buffer that was alloca'd. */ | |
f88eb0b6 KH |
490 | |
491 | void | |
0a9dc68b | 492 | message2 (m, len, multibyte) |
f88eb0b6 KH |
493 | char *m; |
494 | int len; | |
0a9dc68b | 495 | int multibyte; |
f88eb0b6 KH |
496 | { |
497 | /* First flush out any partial line written with print. */ | |
3c6595e0 | 498 | message_log_maybe_newline (); |
f88eb0b6 | 499 | if (m) |
0a9dc68b RS |
500 | message_dolog (m, len, 1, multibyte); |
501 | message2_nolog (m, len, multibyte); | |
5992c4f7 KH |
502 | } |
503 | ||
504 | ||
1adc55de | 505 | /* The non-logging counterpart of message2. */ |
5992c4f7 KH |
506 | |
507 | void | |
44461111 | 508 | message2_nolog (m, len, multibyte) |
5992c4f7 KH |
509 | char *m; |
510 | int len; | |
90adcf20 | 511 | { |
44461111 | 512 | message_enable_multibyte = multibyte; |
a3788d53 | 513 | |
90adcf20 RS |
514 | if (noninteractive) |
515 | { | |
516 | if (noninteractive_need_newline) | |
517 | putc ('\n', stderr); | |
518 | noninteractive_need_newline = 0; | |
c3597849 RS |
519 | if (m) |
520 | fwrite (m, len, 1, stderr); | |
90adcf20 RS |
521 | if (cursor_in_echo_area == 0) |
522 | fprintf (stderr, "\n"); | |
523 | fflush (stderr); | |
524 | } | |
525 | /* A null message buffer means that the frame hasn't really been | |
526 | initialized yet. Error messages get reported properly by | |
527 | cmd_error, so this must be just an informative message; toss it. */ | |
528 | else if (INTERACTIVE && FRAME_MESSAGE_BUF (selected_frame)) | |
529 | { | |
73af359d RS |
530 | Lisp_Object mini_window; |
531 | FRAME_PTR f; | |
90adcf20 | 532 | |
73af359d RS |
533 | /* Get the frame containing the minibuffer |
534 | that the selected frame is using. */ | |
535 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
536 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
537 | ||
73af359d | 538 | FRAME_SAMPLE_VISIBILITY (f); |
90adcf20 | 539 | if (FRAME_VISIBLE_P (selected_frame) |
73af359d RS |
540 | && ! FRAME_VISIBLE_P (f)) |
541 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (mini_window))); | |
90adcf20 RS |
542 | |
543 | if (m) | |
544 | { | |
545 | echo_area_glyphs = m; | |
546 | echo_area_glyphs_length = len; | |
b6436d4e RS |
547 | |
548 | if (minibuffer_auto_raise) | |
549 | Fraise_frame (WINDOW_FRAME (XWINDOW (mini_window))); | |
90adcf20 | 550 | } |
ded34426 JB |
551 | else |
552 | echo_area_glyphs = previous_echo_glyphs = 0; | |
553 | ||
554 | do_pending_window_change (); | |
555 | echo_area_display (); | |
73af359d | 556 | update_frame (f, 1, 1); |
ded34426 | 557 | do_pending_window_change (); |
853cf346 | 558 | if (frame_up_to_date_hook != 0 && ! gc_in_progress) |
73af359d | 559 | (*frame_up_to_date_hook) (f); |
ded34426 JB |
560 | } |
561 | } | |
1adc55de | 562 | \f |
0a9dc68b RS |
563 | /* Display in echo area the null-terminated ASCII-only string M. |
564 | If M is 0, clear out any existing message, | |
565 | and let the minibuffer text show through. | |
1adc55de | 566 | |
0a9dc68b | 567 | The string M must continue to exist until after the echo area |
1adc55de RS |
568 | gets cleared or some other message gets displayed there. |
569 | ||
570 | Do not pass text that is stored in a Lisp string. | |
571 | Do not pass text in a buffer that was alloca'd. */ | |
ded34426 | 572 | |
48ae5f0a KH |
573 | void |
574 | message1 (m) | |
575 | char *m; | |
576 | { | |
0a9dc68b | 577 | message2 (m, (m ? strlen (m) : 0), 0); |
48ae5f0a KH |
578 | } |
579 | ||
0b1005ef KH |
580 | void |
581 | message1_nolog (m) | |
582 | char *m; | |
583 | { | |
0a9dc68b RS |
584 | message2_nolog (m, (m ? strlen (m) : 0), 0); |
585 | } | |
586 | ||
587 | /* Display a message M which contains a single %s | |
588 | which gets replaced with STRING. */ | |
589 | ||
590 | void | |
591 | message_with_string (m, string, log) | |
592 | char *m; | |
593 | Lisp_Object string; | |
594 | int log; | |
595 | { | |
596 | if (noninteractive) | |
597 | { | |
598 | if (m) | |
599 | { | |
600 | if (noninteractive_need_newline) | |
601 | putc ('\n', stderr); | |
602 | noninteractive_need_newline = 0; | |
603 | fprintf (stderr, m, XSTRING (string)->data); | |
604 | if (cursor_in_echo_area == 0) | |
605 | fprintf (stderr, "\n"); | |
606 | fflush (stderr); | |
607 | } | |
608 | } | |
609 | else if (INTERACTIVE) | |
610 | { | |
611 | /* The frame whose minibuffer we're going to display the message on. | |
612 | It may be larger than the selected frame, so we need | |
613 | to use its buffer, not the selected frame's buffer. */ | |
614 | Lisp_Object mini_window; | |
615 | FRAME_PTR f; | |
616 | ||
617 | /* Get the frame containing the minibuffer | |
618 | that the selected frame is using. */ | |
619 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
620 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
621 | ||
622 | /* A null message buffer means that the frame hasn't really been | |
623 | initialized yet. Error messages get reported properly by | |
624 | cmd_error, so this must be just an informative message; toss it. */ | |
625 | if (FRAME_MESSAGE_BUF (f)) | |
626 | { | |
627 | int len; | |
628 | char *a[1]; | |
629 | a[0] = (char *) XSTRING (string)->data; | |
630 | ||
631 | len = doprnt (FRAME_MESSAGE_BUF (f), | |
632 | FRAME_MESSAGE_BUF_SIZE (f), m, (char *)0, 3, a); | |
633 | ||
634 | if (log) | |
635 | message2 (FRAME_MESSAGE_BUF (f), len, | |
636 | STRING_MULTIBYTE (string)); | |
637 | else | |
638 | message2_nolog (FRAME_MESSAGE_BUF (f), len, | |
639 | STRING_MULTIBYTE (string)); | |
640 | ||
641 | /* Print should start at the beginning of the message | |
642 | buffer next time. */ | |
643 | message_buf_print = 0; | |
644 | } | |
645 | } | |
0b1005ef KH |
646 | } |
647 | ||
76412d64 RS |
648 | /* Truncate what will be displayed in the echo area |
649 | the next time we display it--but don't redisplay it now. */ | |
650 | ||
651 | void | |
652 | truncate_echo_area (len) | |
653 | int len; | |
654 | { | |
655 | /* A null message buffer means that the frame hasn't really been | |
656 | initialized yet. Error messages get reported properly by | |
657 | cmd_error, so this must be just an informative message; toss it. */ | |
658 | if (!noninteractive && INTERACTIVE && FRAME_MESSAGE_BUF (selected_frame)) | |
659 | echo_area_glyphs_length = len; | |
660 | } | |
661 | ||
44fa5b1e | 662 | /* Nonzero if FRAME_MESSAGE_BUF (selected_frame) is being used by print; |
9c74a0dd JB |
663 | zero if being used by message. */ |
664 | int message_buf_print; | |
665 | ||
1adc55de | 666 | /* Dump an informative message to the minibuf. If M is 0, clear out |
81d478f3 | 667 | any existing message, and let the minibuffer text show through. */ |
1adc55de | 668 | |
a2889657 | 669 | /* VARARGS 1 */ |
a2889657 JB |
670 | void |
671 | message (m, a1, a2, a3) | |
672 | char *m; | |
5d5ed907 | 673 | EMACS_INT a1, a2, a3; |
a2889657 JB |
674 | { |
675 | if (noninteractive) | |
676 | { | |
81d478f3 JB |
677 | if (m) |
678 | { | |
679 | if (noninteractive_need_newline) | |
680 | putc ('\n', stderr); | |
681 | noninteractive_need_newline = 0; | |
682 | fprintf (stderr, m, a1, a2, a3); | |
c4f14ccb RS |
683 | if (cursor_in_echo_area == 0) |
684 | fprintf (stderr, "\n"); | |
81d478f3 JB |
685 | fflush (stderr); |
686 | } | |
a2889657 | 687 | } |
1f40cad2 | 688 | else if (INTERACTIVE) |
a2889657 | 689 | { |
1f40cad2 JB |
690 | /* The frame whose minibuffer we're going to display the message on. |
691 | It may be larger than the selected frame, so we need | |
692 | to use its buffer, not the selected frame's buffer. */ | |
73af359d RS |
693 | Lisp_Object mini_window; |
694 | FRAME_PTR f; | |
695 | ||
696 | /* Get the frame containing the minibuffer | |
697 | that the selected frame is using. */ | |
698 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
699 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
1f40cad2 JB |
700 | |
701 | /* A null message buffer means that the frame hasn't really been | |
702 | initialized yet. Error messages get reported properly by | |
703 | cmd_error, so this must be just an informative message; toss it. */ | |
73af359d | 704 | if (FRAME_MESSAGE_BUF (f)) |
81d478f3 | 705 | { |
1f40cad2 JB |
706 | if (m) |
707 | { | |
90adcf20 | 708 | int len; |
a2889657 | 709 | #ifdef NO_ARG_ARRAY |
d5315282 AS |
710 | char *a[3]; |
711 | a[0] = (char *) a1; | |
712 | a[1] = (char *) a2; | |
713 | a[2] = (char *) a3; | |
a2889657 | 714 | |
73af359d | 715 | len = doprnt (FRAME_MESSAGE_BUF (f), |
1c9241f5 | 716 | FRAME_MESSAGE_BUF_SIZE (f), m, (char *)0, 3, a); |
a2889657 | 717 | #else |
73af359d | 718 | len = doprnt (FRAME_MESSAGE_BUF (f), |
12adba34 RS |
719 | FRAME_MESSAGE_BUF_SIZE (f), m, (char *)0, 3, |
720 | (char **) &a1); | |
1f40cad2 | 721 | #endif /* NO_ARG_ARRAY */ |
1f40cad2 | 722 | |
0a9dc68b | 723 | message2 (FRAME_MESSAGE_BUF (f), len, 0); |
1f40cad2 JB |
724 | } |
725 | else | |
726 | message1 (0); | |
727 | ||
728 | /* Print should start at the beginning of the message | |
729 | buffer next time. */ | |
730 | message_buf_print = 0; | |
81d478f3 | 731 | } |
a2889657 JB |
732 | } |
733 | } | |
734 | ||
1adc55de | 735 | /* The non-logging version of message. */ |
6c4429a5 KH |
736 | void |
737 | message_nolog (m, a1, a2, a3) | |
738 | char *m; | |
739 | EMACS_INT a1, a2, a3; | |
740 | { | |
741 | Lisp_Object old_log_max; | |
742 | old_log_max = Vmessage_log_max; | |
743 | Vmessage_log_max = Qnil; | |
744 | message (m, a1, a2, a3); | |
745 | Vmessage_log_max = old_log_max; | |
746 | } | |
747 | ||
131f2133 RS |
748 | void |
749 | update_echo_area () | |
750 | { | |
0a9dc68b RS |
751 | message2 (echo_area_glyphs, echo_area_glyphs_length, |
752 | ! NILP (current_buffer->enable_multibyte_characters)); | |
131f2133 | 753 | } |
1adc55de | 754 | \f |
a2889657 JB |
755 | static void |
756 | echo_area_display () | |
757 | { | |
758 | register int vpos; | |
44fa5b1e | 759 | FRAME_PTR f; |
73af359d | 760 | Lisp_Object mini_window; |
a2889657 | 761 | |
73af359d RS |
762 | /* Choose the minibuffer window for this display. |
763 | It is the minibuffer window used by the selected frame. */ | |
764 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
765 | /* This is the frame that window is in. */ | |
766 | f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
a2889657 | 767 | |
44fa5b1e | 768 | if (! FRAME_VISIBLE_P (f)) |
a2889657 | 769 | return; |
a2889657 | 770 | |
44fa5b1e | 771 | if (frame_garbaged) |
a2889657 | 772 | { |
02a9b6e4 | 773 | redraw_garbaged_frames (); |
44fa5b1e | 774 | frame_garbaged = 0; |
a2889657 JB |
775 | } |
776 | ||
777 | if (echo_area_glyphs || minibuf_level == 0) | |
778 | { | |
a2f016e3 RS |
779 | int i; |
780 | ||
73af359d RS |
781 | echo_area_window = mini_window; |
782 | ||
783 | vpos = XFASTINT (XWINDOW (mini_window)->top); | |
44fa5b1e | 784 | get_display_line (f, vpos, 0); |
a2f016e3 RS |
785 | |
786 | /* Make sure the columns that overlap a left-hand scroll bar | |
787 | are always clear. */ | |
788 | for (i = 0; i < FRAME_LEFT_SCROLL_BAR_WIDTH (f); i++) | |
789 | f->desired_glyphs->glyphs[vpos][i] = SPACEGLYPH; | |
790 | ||
73af359d | 791 | display_string (XWINDOW (mini_window), vpos, |
a2889657 | 792 | echo_area_glyphs ? echo_area_glyphs : "", |
90adcf20 | 793 | echo_area_glyphs ? echo_area_glyphs_length : -1, |
73f194f1 | 794 | FRAME_LEFT_SCROLL_BAR_WIDTH (f), |
21e989e3 | 795 | 0, 0, 0, |
a3788d53 RS |
796 | FRAME_WIDTH (f) + FRAME_LEFT_SCROLL_BAR_WIDTH (f), |
797 | message_enable_multibyte); | |
a2889657 | 798 | |
b6f0fe04 | 799 | #if 0 /* This just gets in the way. update_frame does the job. */ |
a2889657 | 800 | /* If desired cursor location is on this line, put it at end of text */ |
b5bbc9a5 KH |
801 | if (cursor_in_echo_area) |
802 | FRAME_CURSOR_Y (f) = vpos; | |
44fa5b1e JB |
803 | if (FRAME_CURSOR_Y (f) == vpos) |
804 | FRAME_CURSOR_X (f) = FRAME_DESIRED_GLYPHS (f)->used[vpos]; | |
b6f0fe04 | 805 | #endif |
daa37602 JB |
806 | |
807 | /* Fill the rest of the minibuffer window with blank lines. */ | |
808 | { | |
809 | int i; | |
810 | ||
b2a76982 | 811 | for (i = vpos + 1; |
73af359d | 812 | i < vpos + XFASTINT (XWINDOW (mini_window)->height); i++) |
daa37602 | 813 | { |
44fa5b1e | 814 | get_display_line (f, i, 0); |
b8333774 RS |
815 | /* We don't use FRAME_SCROLL_BAR_WIDTH (f) as the starting |
816 | hpos, because it is good to clear whatever is behind the | |
817 | scroll bar. This does not affect the scroll bar itself. */ | |
e88dcae1 | 818 | display_string (XWINDOW (mini_window), i, |
73f194f1 | 819 | "", 0, |
b8333774 | 820 | 0, 0, 0, |
a3788d53 RS |
821 | 0, FRAME_WIDTH (f) + FRAME_SCROLL_BAR_WIDTH (f), |
822 | 0); | |
daa37602 JB |
823 | } |
824 | } | |
a2889657 | 825 | } |
73af359d | 826 | else if (!EQ (mini_window, selected_window)) |
a2889657 JB |
827 | windows_or_buffers_changed++; |
828 | ||
73af359d | 829 | if (EQ (mini_window, selected_window)) |
a2889657 JB |
830 | this_line_bufpos = 0; |
831 | ||
832 | previous_echo_glyphs = echo_area_glyphs; | |
833 | } | |
1adc55de RS |
834 | \f |
835 | /* Update frame titles. */ | |
96a410bc | 836 | |
8f3343d0 | 837 | #ifdef HAVE_WINDOW_SYSTEM |
d39b6696 KH |
838 | static char frame_title_buf[512]; |
839 | static char *frame_title_ptr; | |
96a410bc | 840 | |
d39b6696 KH |
841 | static int |
842 | store_frame_title (str, mincol, maxcol) | |
843 | char *str; | |
844 | int mincol, maxcol; | |
845 | { | |
846 | char *limit; | |
847 | if (maxcol < 0 || maxcol >= sizeof(frame_title_buf)) | |
848 | maxcol = sizeof (frame_title_buf); | |
849 | limit = &frame_title_buf[maxcol]; | |
850 | while (*str != '\0' && frame_title_ptr < limit) | |
851 | *frame_title_ptr++ = *str++; | |
852 | while (frame_title_ptr < &frame_title_buf[mincol]) | |
853 | *frame_title_ptr++ = ' '; | |
854 | return frame_title_ptr - frame_title_buf; | |
855 | } | |
96a410bc | 856 | |
96a410bc KH |
857 | static void |
858 | x_consider_frame_title (frame) | |
859 | Lisp_Object frame; | |
860 | { | |
d39b6696 KH |
861 | Lisp_Object fmt; |
862 | struct buffer *obuf; | |
863 | int len; | |
96a410bc KH |
864 | FRAME_PTR f = XFRAME (frame); |
865 | ||
8f3343d0 | 866 | if (!(FRAME_WINDOW_P (f) || FRAME_MINIBUF_ONLY_P (f) || f->explicit_name)) |
d39b6696 | 867 | return; |
3450d04c KH |
868 | |
869 | /* Do we have more than one visible frame on this X display? */ | |
870 | { | |
871 | Lisp_Object tail; | |
872 | ||
873 | for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr) | |
874 | { | |
875 | FRAME_PTR tf = XFRAME (XCONS (tail)->car); | |
876 | ||
c9492f08 KH |
877 | if (tf != f && FRAME_KBOARD (tf) == FRAME_KBOARD (f) |
878 | && !FRAME_MINIBUF_ONLY_P (tf) | |
3450d04c KH |
879 | && (FRAME_VISIBLE_P (tf) || FRAME_ICONIFIED_P (tf))) |
880 | break; | |
881 | } | |
882 | ||
883 | multiple_frames = CONSP (tail); | |
884 | } | |
885 | ||
d39b6696 KH |
886 | obuf = current_buffer; |
887 | Fset_buffer (XWINDOW (f->selected_window)->buffer); | |
888 | fmt = (FRAME_ICONIFIED_P (f) ? Vicon_title_format : Vframe_title_format); | |
889 | frame_title_ptr = frame_title_buf; | |
890 | len = display_mode_element (XWINDOW (f->selected_window), 0, 0, 0, | |
891 | 0, sizeof (frame_title_buf), fmt); | |
892 | frame_title_ptr = 0; | |
893 | set_buffer_internal (obuf); | |
894 | /* Set the name only if it's changed. This avoids consing | |
895 | in the common case where it hasn't. (If it turns out that we've | |
896 | already wasted too much time by walking through the list with | |
897 | display_mode_element, then we might need to optimize at a higher | |
898 | level than this.) */ | |
fc932ac6 | 899 | if (! STRINGP (f->name) || STRING_BYTES (XSTRING (f->name)) != len |
d39b6696 KH |
900 | || bcmp (frame_title_buf, XSTRING (f->name)->data, len) != 0) |
901 | x_implicitly_set_name (f, make_string (frame_title_buf, len), Qnil); | |
96a410bc | 902 | } |
c7c9ca97 KH |
903 | #else |
904 | #define frame_title_ptr ((char *)0) | |
e39322d9 | 905 | #define store_frame_title(str, mincol, maxcol) 0 |
96a410bc | 906 | #endif |
a2889657 | 907 | \f |
90adcf20 | 908 | /* Prepare for redisplay by updating menu-bar item lists when appropriate. |
87382820 | 909 | This can call eval. */ |
90adcf20 RS |
910 | |
911 | void | |
912 | prepare_menu_bars () | |
913 | { | |
914 | register struct window *w = XWINDOW (selected_window); | |
915 | int all_windows; | |
08b610e4 | 916 | struct gcpro gcpro1, gcpro2; |
90adcf20 | 917 | |
ecf7de9b | 918 | all_windows = (update_mode_lines || buffer_shared > 1 |
28995e67 | 919 | || windows_or_buffers_changed); |
90adcf20 | 920 | |
feb0c42f KH |
921 | /* Update all frame titles based on their buffer names, etc. |
922 | We do this before the menu bars so that the buffer-menu | |
923 | will show the up-to-date frame titles. | |
924 | ||
925 | This used to be done after the menu bars, for a reason that | |
926 | was stated as follows but which I do not understand: | |
927 | "We do this after the menu bars so that the frame will first | |
928 | create its menu bar using the name `emacs' if no other name | |
929 | has yet been specified." | |
930 | I think that is no longer a concern. */ | |
8f3343d0 | 931 | #ifdef HAVE_WINDOW_SYSTEM |
d3f46cff | 932 | if (windows_or_buffers_changed || update_mode_lines) |
feb0c42f KH |
933 | { |
934 | Lisp_Object tail, frame; | |
935 | ||
936 | FOR_EACH_FRAME (tail, frame) | |
937 | if (FRAME_VISIBLE_P (XFRAME (frame)) | |
938 | || FRAME_ICONIFIED_P (XFRAME (frame))) | |
939 | x_consider_frame_title (frame); | |
940 | } | |
941 | #endif | |
942 | ||
90adcf20 RS |
943 | /* Update the menu bar item lists, if appropriate. |
944 | This has to be done before any actual redisplay | |
945 | or generation of display lines. */ | |
946 | if (all_windows) | |
947 | { | |
948 | Lisp_Object tail, frame; | |
a2725ab2 RS |
949 | int count = specpdl_ptr - specpdl; |
950 | ||
84dd0ae5 | 951 | record_unwind_protect (Fset_match_data, Fmatch_data (Qnil, Qnil)); |
90adcf20 RS |
952 | |
953 | FOR_EACH_FRAME (tail, frame) | |
08b610e4 RS |
954 | { |
955 | /* If a window on this frame changed size, | |
956 | report that to the user and clear the size-change flag. */ | |
957 | if (FRAME_WINDOW_SIZES_CHANGED (XFRAME (frame))) | |
958 | { | |
959 | Lisp_Object functions; | |
14510fee RS |
960 | /* Clear flag first in case we get error below. */ |
961 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (frame)) = 0; | |
08b610e4 RS |
962 | functions = Vwindow_size_change_functions; |
963 | GCPRO2 (tail, functions); | |
964 | while (CONSP (functions)) | |
965 | { | |
966 | call1 (XCONS (functions)->car, frame); | |
967 | functions = XCONS (functions)->cdr; | |
968 | } | |
969 | UNGCPRO; | |
08b610e4 RS |
970 | } |
971 | GCPRO1 (tail); | |
a2725ab2 | 972 | update_menu_bar (XFRAME (frame), 0); |
08b610e4 RS |
973 | UNGCPRO; |
974 | } | |
a2725ab2 RS |
975 | |
976 | unbind_to (count, Qnil); | |
90adcf20 | 977 | } |
ecf7de9b | 978 | else |
a2725ab2 | 979 | update_menu_bar (selected_frame, 1); |
cd6dfed6 RS |
980 | |
981 | /* Motif needs this. See comment in xmenu.c. | |
982 | Turn it off when pending_menu_activation is not defined. */ | |
983 | #ifdef USE_X_TOOLKIT | |
984 | pending_menu_activation = 0; | |
985 | #endif | |
90adcf20 RS |
986 | } |
987 | \f | |
44fa5b1e | 988 | /* Do a frame update, taking possible shortcuts into account. |
a2889657 JB |
989 | This is the main external entry point for redisplay. |
990 | ||
991 | If the last redisplay displayed an echo area message and that | |
992 | message is no longer requested, we clear the echo area | |
993 | or bring back the minibuffer if that is in use. | |
994 | ||
90adcf20 RS |
995 | Do not call eval from within this function. |
996 | Calls to eval after the call to echo_area_display would confuse | |
997 | the display_line mechanism and would cause a crash. | |
998 | Calls to eval before that point will work most of the time, | |
999 | but can still lose, because this function | |
1000 | can be called from signal handlers; with alarms set up; | |
a2889657 | 1001 | or with synchronous processes running. |
90adcf20 | 1002 | |
a2889657 JB |
1003 | See Fcall_process; if you called it from here, it could be |
1004 | entered recursively. */ | |
1005 | ||
0d231165 RS |
1006 | static int do_verify_charstarts; |
1007 | ||
463f6b91 RS |
1008 | /* Counter is used to clear the face cache |
1009 | no more than once ever 1000 redisplays. */ | |
1010 | static int clear_face_cache_count; | |
1011 | ||
20de20dc RS |
1012 | /* Record the previous terminal frame we displayed. */ |
1013 | static FRAME_PTR previous_terminal_frame; | |
1014 | ||
a2889657 JB |
1015 | void |
1016 | redisplay () | |
e9874cee RS |
1017 | { |
1018 | redisplay_internal (0); | |
1019 | } | |
1020 | ||
1021 | /* If PRESERVE_ECHO_AREA is nonzero, it means this redisplay | |
1022 | is not in response to any user action; therefore, we should | |
94a66eea RS |
1023 | preserve the echo area. (Actually, our caller does that job.) |
1024 | Perhaps in the future avoid recentering windows | |
e9874cee RS |
1025 | if it is not necessary; currently that causes some problems. */ |
1026 | ||
1027 | static void | |
1028 | redisplay_internal (preserve_echo_area) | |
1029 | int preserve_echo_area; | |
a2889657 JB |
1030 | { |
1031 | register struct window *w = XWINDOW (selected_window); | |
1032 | register int pause; | |
1033 | int must_finish = 0; | |
1034 | int all_windows; | |
1035 | register int tlbufpos, tlendpos; | |
1036 | struct position pos; | |
89819bdd | 1037 | int number_of_visible_frames; |
a2889657 JB |
1038 | |
1039 | if (noninteractive) | |
1040 | return; | |
1041 | ||
15f0cf78 RS |
1042 | #ifdef USE_X_TOOLKIT |
1043 | if (popup_activated ()) | |
1044 | return; | |
1045 | #endif | |
1046 | ||
735c094c KH |
1047 | if (! NILP (Vinhibit_redisplay)) |
1048 | return; | |
1049 | ||
8b32d885 RS |
1050 | retry: |
1051 | ||
fd8ff63d | 1052 | if (! FRAME_WINDOW_P (selected_frame) |
20de20dc RS |
1053 | && previous_terminal_frame != selected_frame) |
1054 | { | |
1055 | /* Since frames on an ASCII terminal share the same display area, | |
1056 | displaying a different frame means redisplay the whole thing. */ | |
1057 | windows_or_buffers_changed++; | |
1058 | SET_FRAME_GARBAGED (selected_frame); | |
1059 | XSETFRAME (Vterminal_frame, selected_frame); | |
1060 | } | |
1061 | previous_terminal_frame = selected_frame; | |
20de20dc | 1062 | |
d724d989 JB |
1063 | /* Set the visible flags for all frames. |
1064 | Do this before checking for resized or garbaged frames; they want | |
1065 | to know if their frames are visible. | |
1066 | See the comment in frame.h for FRAME_SAMPLE_VISIBILITY. */ | |
1067 | { | |
35f56f96 | 1068 | Lisp_Object tail, frame; |
d724d989 | 1069 | |
89819bdd RS |
1070 | number_of_visible_frames = 0; |
1071 | ||
35f56f96 | 1072 | FOR_EACH_FRAME (tail, frame) |
f82aff7c RS |
1073 | { |
1074 | FRAME_SAMPLE_VISIBILITY (XFRAME (frame)); | |
1075 | ||
8e83f802 RS |
1076 | if (FRAME_VISIBLE_P (XFRAME (frame))) |
1077 | number_of_visible_frames++; | |
89819bdd | 1078 | |
f82aff7c RS |
1079 | /* Clear out all the display lines in which we will generate the |
1080 | glyphs to display. */ | |
1081 | init_desired_glyphs (XFRAME (frame)); | |
1082 | } | |
d724d989 JB |
1083 | } |
1084 | ||
44fa5b1e | 1085 | /* Notice any pending interrupt request to change frame size. */ |
a2889657 JB |
1086 | do_pending_window_change (); |
1087 | ||
44fa5b1e | 1088 | if (frame_garbaged) |
a2889657 | 1089 | { |
02a9b6e4 | 1090 | redraw_garbaged_frames (); |
44fa5b1e | 1091 | frame_garbaged = 0; |
a2889657 JB |
1092 | } |
1093 | ||
f82aff7c RS |
1094 | prepare_menu_bars (); |
1095 | ||
28995e67 | 1096 | if (windows_or_buffers_changed) |
a2889657 JB |
1097 | update_mode_lines++; |
1098 | ||
538f13d4 RS |
1099 | /* Detect case that we need to write or remove a star in the mode line. */ |
1100 | if ((SAVE_MODIFF < MODIFF) != !NILP (w->last_had_star)) | |
a2889657 JB |
1101 | { |
1102 | w->update_mode_line = Qt; | |
1103 | if (buffer_shared > 1) | |
1104 | update_mode_lines++; | |
1105 | } | |
1106 | ||
28995e67 RS |
1107 | /* If %c is in use, update it if needed. */ |
1108 | if (!NILP (w->column_number_displayed) | |
1109 | /* This alternative quickly identifies a common case | |
1110 | where no change is needed. */ | |
1111 | && !(PT == XFASTINT (w->last_point) | |
8850a573 RS |
1112 | && XFASTINT (w->last_modified) >= MODIFF |
1113 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF) | |
28995e67 RS |
1114 | && XFASTINT (w->column_number_displayed) != current_column ()) |
1115 | w->update_mode_line = Qt; | |
1116 | ||
44fa5b1e | 1117 | FRAME_SCROLL_BOTTOM_VPOS (XFRAME (w->frame)) = -1; |
a2889657 JB |
1118 | |
1119 | all_windows = update_mode_lines || buffer_shared > 1; | |
a2889657 JB |
1120 | |
1121 | /* If specs for an arrow have changed, do thorough redisplay | |
1122 | to ensure we remove any arrow that should no longer exist. */ | |
d45de95b | 1123 | if (! EQ (COERCE_MARKER (Voverlay_arrow_position), last_arrow_position) |
ded34426 | 1124 | || ! EQ (Voverlay_arrow_string, last_arrow_string)) |
28995e67 | 1125 | all_windows = 1; |
a2889657 | 1126 | |
90adcf20 RS |
1127 | /* Normally the message* functions will have already displayed and |
1128 | updated the echo area, but the frame may have been trashed, or | |
1129 | the update may have been preempted, so display the echo area | |
1130 | again here. */ | |
1131 | if (echo_area_glyphs || previous_echo_glyphs) | |
1132 | { | |
1133 | echo_area_display (); | |
1134 | must_finish = 1; | |
1135 | } | |
1136 | ||
bd66d1ba RS |
1137 | /* If showing region, and mark has changed, must redisplay whole window. */ |
1138 | if (((!NILP (Vtransient_mark_mode) | |
1139 | && !NILP (XBUFFER (w->buffer)->mark_active)) | |
1140 | != !NILP (w->region_showing)) | |
82d04750 JB |
1141 | || (!NILP (w->region_showing) |
1142 | && !EQ (w->region_showing, | |
1143 | Fmarker_position (XBUFFER (w->buffer)->mark)))) | |
bd66d1ba RS |
1144 | this_line_bufpos = -1; |
1145 | ||
a2889657 JB |
1146 | tlbufpos = this_line_bufpos; |
1147 | tlendpos = this_line_endpos; | |
265a9e55 | 1148 | if (!all_windows && tlbufpos > 0 && NILP (w->update_mode_line) |
73af359d | 1149 | && !current_buffer->clip_changed |
44fa5b1e | 1150 | && FRAME_VISIBLE_P (XFRAME (w->frame)) |
f21ef775 | 1151 | && !FRAME_OBSCURED_P (XFRAME (w->frame)) |
a2889657 JB |
1152 | /* Make sure recorded data applies to current buffer, etc */ |
1153 | && this_line_buffer == current_buffer | |
1154 | && current_buffer == XBUFFER (w->buffer) | |
265a9e55 | 1155 | && NILP (w->force_start) |
a2889657 | 1156 | /* Point must be on the line that we have info recorded about */ |
ae3b1442 KH |
1157 | && PT >= tlbufpos |
1158 | && PT <= Z - tlendpos | |
a2889657 JB |
1159 | /* All text outside that line, including its final newline, |
1160 | must be unchanged */ | |
8850a573 RS |
1161 | && ((XFASTINT (w->last_modified) >= MODIFF |
1162 | && (XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF)) | |
a2889657 JB |
1163 | || (beg_unchanged >= tlbufpos - 1 |
1164 | && GPT >= tlbufpos | |
05ba02eb JB |
1165 | /* If selective display, can't optimize |
1166 | if the changes start at the beginning of the line. */ | |
e24c997d | 1167 | && ((INTEGERP (current_buffer->selective_display) |
05ba02eb JB |
1168 | && XINT (current_buffer->selective_display) > 0 |
1169 | ? (beg_unchanged >= tlbufpos | |
1170 | && GPT > tlbufpos) | |
1171 | : 1)) | |
a2889657 JB |
1172 | && end_unchanged >= tlendpos |
1173 | && Z - GPT >= tlendpos))) | |
1174 | { | |
12adba34 RS |
1175 | int tlbufpos_byte = CHAR_TO_BYTE (tlbufpos); |
1176 | if (tlbufpos > BEGV && FETCH_BYTE (tlbufpos_byte - 1) != '\n' | |
a2889657 | 1177 | && (tlbufpos == ZV |
12adba34 | 1178 | || FETCH_BYTE (tlbufpos_byte) == '\n')) |
a2889657 JB |
1179 | /* Former continuation line has disappeared by becoming empty */ |
1180 | goto cancel; | |
1181 | else if (XFASTINT (w->last_modified) < MODIFF | |
8850a573 | 1182 | || XFASTINT (w->last_overlay_modified) < OVERLAY_MODIFF |
a2889657 JB |
1183 | || MINI_WINDOW_P (w)) |
1184 | { | |
1c9241f5 KH |
1185 | /* We have to handle the case of continuation around a |
1186 | wide-column character (See the comment in indent.c around | |
1187 | line 885). | |
1188 | ||
1189 | For instance, in the following case: | |
1190 | ||
1191 | -------- Insert -------- | |
1192 | K_A_N_\\ `a' K_A_N_a\ `X_' are wide-column chars. | |
1193 | J_I_ ==> J_I_ `^^' are cursors. | |
1194 | ^^ ^^ | |
1195 | -------- -------- | |
1196 | ||
1197 | As we have to redraw the line above, we should goto cancel. */ | |
1198 | ||
1199 | struct position val; | |
1200 | int prevline; | |
12adba34 | 1201 | int opoint = PT, opoint_byte = PT_BYTE; |
1c9241f5 | 1202 | |
12adba34 RS |
1203 | scan_newline (tlbufpos, tlbufpos_byte, BEGV, BEGV_BYTE, -1, 1); |
1204 | ||
1205 | val = *compute_motion (PT, 0, | |
1c9241f5 KH |
1206 | XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0, |
1207 | 0, | |
1208 | tlbufpos, | |
1209 | 1 << (BITS_PER_SHORT - 1), | |
1210 | 1 << (BITS_PER_SHORT - 1), | |
1211 | window_internal_width (w) - 1, | |
1212 | XINT (w->hscroll), 0, w); | |
26a9b1f3 | 1213 | TEMP_SET_PT_BOTH (opoint, opoint_byte); |
1c9241f5 KH |
1214 | if (val.hpos != this_line_start_hpos) |
1215 | goto cancel; | |
1216 | ||
a2889657 JB |
1217 | cursor_vpos = -1; |
1218 | overlay_arrow_seen = 0; | |
ca26e1c8 | 1219 | zv_strings_seen = 0; |
12adba34 RS |
1220 | display_text_line (w, tlbufpos, tlbufpos_byte, |
1221 | this_line_vpos, this_line_start_hpos, | |
1222 | pos_tab_offset (w, tlbufpos, tlbufpos_byte), 0); | |
a2889657 JB |
1223 | /* If line contains point, is not continued, |
1224 | and ends at same distance from eob as before, we win */ | |
1225 | if (cursor_vpos >= 0 && this_line_bufpos | |
1226 | && this_line_endpos == tlendpos) | |
1227 | { | |
0d231165 RS |
1228 | /* If this is not the window's last line, |
1229 | we must adjust the charstarts of the lines below. */ | |
1230 | if (this_line_vpos + 1 | |
1231 | < XFASTINT (w->top) + window_internal_height (w)) | |
85bcef6c | 1232 | { |
73f194f1 | 1233 | int left = WINDOW_LEFT_MARGIN (w); |
85bcef6c RS |
1234 | int *charstart_next_line |
1235 | = FRAME_CURRENT_GLYPHS (XFRAME (WINDOW_FRAME (w)))->charstarts[this_line_vpos + 1]; | |
85bcef6c RS |
1236 | int adjust; |
1237 | ||
1238 | if (Z - tlendpos == ZV) | |
1239 | /* This line ends at end of (accessible part of) buffer. | |
1240 | There is no newline to count. */ | |
1241 | adjust = Z - tlendpos - charstart_next_line[left]; | |
1242 | else | |
1243 | /* This line ends in a newline. | |
1244 | Must take account of the newline and the rest of the | |
1245 | text that follows. */ | |
1246 | adjust = Z - tlendpos + 1 - charstart_next_line[left]; | |
1247 | ||
1248 | adjust_window_charstarts (w, this_line_vpos, adjust); | |
1249 | } | |
46db8486 | 1250 | |
73f194f1 | 1251 | if (!WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1252 | preserve_other_columns (w); |
1253 | goto update; | |
1254 | } | |
1255 | else | |
1256 | goto cancel; | |
1257 | } | |
b6f0fe04 RS |
1258 | else if (PT == XFASTINT (w->last_point) |
1259 | /* Make sure the cursor was last displayed | |
1260 | in this window. Otherwise we have to reposition it. */ | |
1261 | && XINT (w->top) <= FRAME_CURSOR_Y (selected_frame) | |
1262 | && (XINT (w->top) + XINT (w->height) | |
1263 | > FRAME_CURSOR_Y (selected_frame))) | |
a2889657 JB |
1264 | { |
1265 | if (!must_finish) | |
1266 | { | |
1267 | do_pending_window_change (); | |
1268 | return; | |
1269 | } | |
1270 | goto update; | |
1271 | } | |
8b51f1e3 KH |
1272 | /* If highlighting the region, or if the cursor is in the echo area, |
1273 | then we can't just move the cursor. */ | |
bd66d1ba RS |
1274 | else if (! (!NILP (Vtransient_mark_mode) |
1275 | && !NILP (current_buffer->mark_active)) | |
293a54ce RS |
1276 | && (w == XWINDOW (current_buffer->last_selected_window) |
1277 | || highlight_nonselected_windows) | |
8b51f1e3 KH |
1278 | && NILP (w->region_showing) |
1279 | && !cursor_in_echo_area) | |
a2889657 JB |
1280 | { |
1281 | pos = *compute_motion (tlbufpos, 0, | |
1282 | XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0, | |
ca26e1c8 | 1283 | 0, |
68be917d | 1284 | PT, 2, - (1 << (BITS_PER_SHORT - 1)), |
b1d1124b | 1285 | window_internal_width (w) - 1, |
de3e8b15 | 1286 | XINT (w->hscroll), |
12adba34 RS |
1287 | pos_tab_offset (w, tlbufpos, tlbufpos_byte), |
1288 | w); | |
a2889657 JB |
1289 | if (pos.vpos < 1) |
1290 | { | |
210e752f | 1291 | int width = window_internal_width (w) - 1; |
44fa5b1e | 1292 | FRAME_CURSOR_X (selected_frame) |
73f194f1 | 1293 | = WINDOW_LEFT_MARGIN (w) + minmax (0, pos.hpos, width); |
44fa5b1e | 1294 | FRAME_CURSOR_Y (selected_frame) = this_line_vpos; |
a2889657 JB |
1295 | goto update; |
1296 | } | |
1297 | else | |
1298 | goto cancel; | |
1299 | } | |
1300 | cancel: | |
1301 | /* Text changed drastically or point moved off of line */ | |
44fa5b1e | 1302 | cancel_line (this_line_vpos, selected_frame); |
a2889657 JB |
1303 | } |
1304 | ||
1305 | this_line_bufpos = 0; | |
1306 | all_windows |= buffer_shared > 1; | |
1307 | ||
463f6b91 RS |
1308 | clear_face_cache_count++; |
1309 | ||
a2889657 JB |
1310 | if (all_windows) |
1311 | { | |
35f56f96 | 1312 | Lisp_Object tail, frame; |
a2889657 | 1313 | |
87485d6f | 1314 | #ifdef HAVE_FACES |
463f6b91 RS |
1315 | /* Clear the face cache, only when we do a full redisplay |
1316 | and not too often either. */ | |
1317 | if (clear_face_cache_count > 1000) | |
1318 | { | |
1319 | clear_face_cache (); | |
1320 | clear_face_cache_count = 0; | |
1321 | } | |
31b24551 JB |
1322 | #endif |
1323 | ||
a2889657 | 1324 | /* Recompute # windows showing selected buffer. |
8de2d90b | 1325 | This will be incremented each time such a window is displayed. */ |
a2889657 JB |
1326 | buffer_shared = 0; |
1327 | ||
35f56f96 | 1328 | FOR_EACH_FRAME (tail, frame) |
30c566e4 | 1329 | { |
35f56f96 | 1330 | FRAME_PTR f = XFRAME (frame); |
fd8ff63d | 1331 | if (FRAME_WINDOW_P (f) || f == selected_frame) |
9769686d | 1332 | { |
35f56f96 | 1333 | |
9769686d RS |
1334 | /* Mark all the scroll bars to be removed; we'll redeem the ones |
1335 | we want when we redisplay their windows. */ | |
1336 | if (condemn_scroll_bars_hook) | |
1337 | (*condemn_scroll_bars_hook) (f); | |
30c566e4 | 1338 | |
f21ef775 | 1339 | if (FRAME_VISIBLE_P (f) && !FRAME_OBSCURED_P (f)) |
89819bdd | 1340 | redisplay_windows (FRAME_ROOT_WINDOW (f), preserve_echo_area); |
30c566e4 | 1341 | |
9769686d RS |
1342 | /* Any scroll bars which redisplay_windows should have nuked |
1343 | should now go away. */ | |
1344 | if (judge_scroll_bars_hook) | |
1345 | (*judge_scroll_bars_hook) (f); | |
1346 | } | |
30c566e4 | 1347 | } |
a2889657 | 1348 | } |
f21ef775 | 1349 | else if (FRAME_VISIBLE_P (selected_frame) && !FRAME_OBSCURED_P (selected_frame)) |
a2889657 | 1350 | { |
e9874cee | 1351 | redisplay_window (selected_window, 1, preserve_echo_area); |
73f194f1 | 1352 | if (!WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1353 | preserve_other_columns (w); |
1354 | } | |
1355 | ||
1356 | update: | |
1357 | /* Prevent various kinds of signals during display update. | |
1358 | stdio is not robust about handling signals, | |
1359 | which can cause an apparent I/O error. */ | |
1360 | if (interrupt_input) | |
1361 | unrequest_sigio (); | |
1362 | stop_polling (); | |
1363 | ||
a2889657 JB |
1364 | if (all_windows) |
1365 | { | |
1366 | Lisp_Object tail; | |
1367 | ||
1368 | pause = 0; | |
1369 | ||
44fa5b1e | 1370 | for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr) |
a2889657 | 1371 | { |
44fa5b1e | 1372 | FRAME_PTR f; |
a2889657 | 1373 | |
e24c997d | 1374 | if (!FRAMEP (XCONS (tail)->car)) |
a2889657 JB |
1375 | continue; |
1376 | ||
44fa5b1e | 1377 | f = XFRAME (XCONS (tail)->car); |
1af9f229 | 1378 | |
fd8ff63d | 1379 | if ((FRAME_WINDOW_P (f) || f == selected_frame) |
f21ef775 | 1380 | && FRAME_VISIBLE_P (f) && !FRAME_OBSCURED_P (f)) |
a2889657 | 1381 | { |
44fa5b1e | 1382 | pause |= update_frame (f, 0, 0); |
a2889657 | 1383 | if (!pause) |
efc63ef0 RS |
1384 | { |
1385 | mark_window_display_accurate (f->root_window, 1); | |
1386 | if (frame_up_to_date_hook != 0) | |
1387 | (*frame_up_to_date_hook) (f); | |
1388 | } | |
a2889657 JB |
1389 | } |
1390 | } | |
1391 | } | |
1392 | else | |
6e8290aa | 1393 | { |
f21ef775 | 1394 | if (FRAME_VISIBLE_P (selected_frame) && !FRAME_OBSCURED_P (selected_frame)) |
44fa5b1e | 1395 | pause = update_frame (selected_frame, 0, 0); |
4d641a15 KH |
1396 | else |
1397 | pause = 0; | |
d724d989 | 1398 | |
8de2d90b | 1399 | /* We may have called echo_area_display at the top of this |
44fa5b1e JB |
1400 | function. If the echo area is on another frame, that may |
1401 | have put text on a frame other than the selected one, so the | |
1402 | above call to update_frame would not have caught it. Catch | |
8de2d90b JB |
1403 | it here. */ |
1404 | { | |
84faf44c RS |
1405 | Lisp_Object mini_window; |
1406 | FRAME_PTR mini_frame; | |
1407 | ||
1408 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); | |
1409 | mini_frame = XFRAME (WINDOW_FRAME (XWINDOW (mini_window))); | |
8de2d90b | 1410 | |
fd8ff63d | 1411 | if (mini_frame != selected_frame && FRAME_WINDOW_P (mini_frame)) |
44fa5b1e | 1412 | pause |= update_frame (mini_frame, 0, 0); |
8de2d90b | 1413 | } |
6e8290aa | 1414 | } |
a2889657 | 1415 | |
44fa5b1e | 1416 | /* If frame does not match, prevent doing single-line-update next time. |
a2889657 JB |
1417 | Also, don't forget to check every line to update the arrow. */ |
1418 | if (pause) | |
1419 | { | |
1420 | this_line_bufpos = 0; | |
265a9e55 | 1421 | if (!NILP (last_arrow_position)) |
a2889657 JB |
1422 | { |
1423 | last_arrow_position = Qt; | |
1424 | last_arrow_string = Qt; | |
1425 | } | |
44fa5b1e | 1426 | /* If we pause after scrolling, some lines in current_frame |
a2889657 JB |
1427 | may be null, so preserve_other_columns won't be able to |
1428 | preserve all the vertical-bar separators. So, avoid using it | |
1429 | in that case. */ | |
73f194f1 | 1430 | if (!WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
1431 | update_mode_lines = 1; |
1432 | } | |
1433 | ||
44fa5b1e | 1434 | /* Now text on frame agrees with windows, so |
a2889657 JB |
1435 | put info into the windows for partial redisplay to follow */ |
1436 | ||
1437 | if (!pause) | |
1438 | { | |
1439 | register struct buffer *b = XBUFFER (w->buffer); | |
1440 | ||
1441 | blank_end_of_window = 0; | |
a2889657 | 1442 | unchanged_modified = BUF_MODIFF (b); |
8850a573 | 1443 | overlay_unchanged_modified = BUF_OVERLAY_MODIFF (b); |
a2889657 JB |
1444 | beg_unchanged = BUF_GPT (b) - BUF_BEG (b); |
1445 | end_unchanged = BUF_Z (b) - BUF_GPT (b); | |
1446 | ||
5936754e RS |
1447 | /* Record the last place cursor was displayed in this window. |
1448 | But not if cursor is in the echo area, because in that case | |
1449 | FRAME_CURSOR_X and FRAME_CURSOR_Y are in the echo area. */ | |
1450 | if (!(cursor_in_echo_area && FRAME_HAS_MINIBUF_P (selected_frame) | |
1451 | && EQ (FRAME_MINIBUF_WINDOW (selected_frame), minibuf_window))) | |
1452 | { | |
1453 | XSETFASTINT (w->last_point, BUF_PT (b)); | |
1454 | XSETFASTINT (w->last_point_x, FRAME_CURSOR_X (selected_frame)); | |
1455 | XSETFASTINT (w->last_point_y, FRAME_CURSOR_Y (selected_frame)); | |
1456 | } | |
1457 | else | |
1458 | /* Make last_point invalid, since we don't really know | |
1459 | where the cursor would be if it were not in the echo area. */ | |
1460 | XSETINT (w->last_point, -1); | |
a2889657 JB |
1461 | |
1462 | if (all_windows) | |
11e82b76 | 1463 | mark_window_display_accurate (FRAME_ROOT_WINDOW (selected_frame), 1); |
a2889657 JB |
1464 | else |
1465 | { | |
28995e67 | 1466 | b->clip_changed = 0; |
a2889657 | 1467 | w->update_mode_line = Qnil; |
c2213350 | 1468 | XSETFASTINT (w->last_modified, BUF_MODIFF (b)); |
8850a573 | 1469 | XSETFASTINT (w->last_overlay_modified, BUF_OVERLAY_MODIFF (b)); |
538f13d4 RS |
1470 | w->last_had_star |
1471 | = (BUF_MODIFF (XBUFFER (w->buffer)) > BUF_SAVE_MODIFF (XBUFFER (w->buffer)) | |
1472 | ? Qt : Qnil); | |
3ee4159a RS |
1473 | |
1474 | /* Record if we are showing a region, so can make sure to | |
1475 | update it fully at next redisplay. */ | |
1476 | w->region_showing = (!NILP (Vtransient_mark_mode) | |
293a54ce RS |
1477 | && (w == XWINDOW (current_buffer->last_selected_window) |
1478 | || highlight_nonselected_windows) | |
3ee4159a RS |
1479 | && !NILP (XBUFFER (w->buffer)->mark_active) |
1480 | ? Fmarker_position (XBUFFER (w->buffer)->mark) | |
1481 | : Qnil); | |
1482 | ||
d2f84654 | 1483 | w->window_end_valid = w->buffer; |
d45de95b | 1484 | last_arrow_position = COERCE_MARKER (Voverlay_arrow_position); |
a2889657 | 1485 | last_arrow_string = Voverlay_arrow_string; |
0d231165 RS |
1486 | if (do_verify_charstarts) |
1487 | verify_charstarts (w); | |
efc63ef0 RS |
1488 | if (frame_up_to_date_hook != 0) |
1489 | (*frame_up_to_date_hook) (selected_frame); | |
a2889657 JB |
1490 | } |
1491 | update_mode_lines = 0; | |
1492 | windows_or_buffers_changed = 0; | |
1493 | } | |
1494 | ||
1495 | /* Start SIGIO interrupts coming again. | |
1496 | Having them off during the code above | |
1497 | makes it less likely one will discard output, | |
1498 | but not impossible, since there might be stuff | |
1499 | in the system buffer here. | |
1500 | But it is much hairier to try to do anything about that. */ | |
1501 | ||
1502 | if (interrupt_input) | |
1503 | request_sigio (); | |
1504 | start_polling (); | |
1505 | ||
11c52c4f RS |
1506 | /* If something has become visible now which was not before, |
1507 | redisplay again, so that we get them. */ | |
1508 | if (!pause) | |
1509 | { | |
1510 | Lisp_Object tail, frame; | |
1511 | int new_count = 0; | |
1512 | ||
1513 | FOR_EACH_FRAME (tail, frame) | |
1514 | { | |
1515 | int this_is_visible = 0; | |
8e83f802 RS |
1516 | |
1517 | if (XFRAME (frame)->visible) | |
1518 | this_is_visible = 1; | |
1519 | FRAME_SAMPLE_VISIBILITY (XFRAME (frame)); | |
1520 | if (XFRAME (frame)->visible) | |
1521 | this_is_visible = 1; | |
11c52c4f RS |
1522 | |
1523 | if (this_is_visible) | |
1524 | new_count++; | |
1525 | } | |
1526 | ||
89819bdd | 1527 | if (new_count != number_of_visible_frames) |
11c52c4f RS |
1528 | windows_or_buffers_changed++; |
1529 | } | |
1530 | ||
44fa5b1e | 1531 | /* Change frame size now if a change is pending. */ |
a2889657 | 1532 | do_pending_window_change (); |
d8e242fd | 1533 | |
8b32d885 RS |
1534 | /* If we just did a pending size change, or have additional |
1535 | visible frames, redisplay again. */ | |
3c8c72e0 | 1536 | if (windows_or_buffers_changed && !pause) |
8b32d885 | 1537 | goto retry; |
a2889657 JB |
1538 | } |
1539 | ||
1540 | /* Redisplay, but leave alone any recent echo area message | |
1541 | unless another message has been requested in its place. | |
1542 | ||
1543 | This is useful in situations where you need to redisplay but no | |
1544 | user action has occurred, making it inappropriate for the message | |
1545 | area to be cleared. See tracking_off and | |
1546 | wait_reading_process_input for examples of these situations. */ | |
1547 | ||
8991bb31 | 1548 | void |
a2889657 JB |
1549 | redisplay_preserve_echo_area () |
1550 | { | |
1551 | if (echo_area_glyphs == 0 && previous_echo_glyphs != 0) | |
1552 | { | |
1553 | echo_area_glyphs = previous_echo_glyphs; | |
e9874cee | 1554 | redisplay_internal (1); |
a2889657 JB |
1555 | echo_area_glyphs = 0; |
1556 | } | |
1557 | else | |
e9874cee | 1558 | redisplay_internal (1); |
a2889657 JB |
1559 | } |
1560 | ||
1561 | void | |
1562 | mark_window_display_accurate (window, flag) | |
1563 | Lisp_Object window; | |
1564 | int flag; | |
1565 | { | |
1566 | register struct window *w; | |
1567 | ||
265a9e55 | 1568 | for (;!NILP (window); window = w->next) |
a2889657 | 1569 | { |
e24c997d | 1570 | if (!WINDOWP (window)) abort (); |
a2889657 JB |
1571 | w = XWINDOW (window); |
1572 | ||
265a9e55 | 1573 | if (!NILP (w->buffer)) |
bd66d1ba | 1574 | { |
c2213350 KH |
1575 | XSETFASTINT (w->last_modified, |
1576 | !flag ? 0 : BUF_MODIFF (XBUFFER (w->buffer))); | |
8850a573 RS |
1577 | XSETFASTINT (w->last_overlay_modified, |
1578 | !flag ? 0 : BUF_OVERLAY_MODIFF (XBUFFER (w->buffer))); | |
538f13d4 RS |
1579 | w->last_had_star |
1580 | = (BUF_MODIFF (XBUFFER (w->buffer)) > BUF_SAVE_MODIFF (XBUFFER (w->buffer)) | |
1581 | ? Qt : Qnil); | |
bd66d1ba RS |
1582 | |
1583 | /* Record if we are showing a region, so can make sure to | |
1584 | update it fully at next redisplay. */ | |
1585 | w->region_showing = (!NILP (Vtransient_mark_mode) | |
293a54ce RS |
1586 | && (w == XWINDOW (current_buffer->last_selected_window) |
1587 | || highlight_nonselected_windows) | |
bd66d1ba RS |
1588 | && !NILP (XBUFFER (w->buffer)->mark_active) |
1589 | ? Fmarker_position (XBUFFER (w->buffer)->mark) | |
1590 | : Qnil); | |
1591 | } | |
1592 | ||
d2f84654 | 1593 | w->window_end_valid = w->buffer; |
a2889657 | 1594 | w->update_mode_line = Qnil; |
051e7076 | 1595 | if (!NILP (w->buffer) && flag) |
28995e67 | 1596 | XBUFFER (w->buffer)->clip_changed = 0; |
a2889657 | 1597 | |
265a9e55 | 1598 | if (!NILP (w->vchild)) |
a2889657 | 1599 | mark_window_display_accurate (w->vchild, flag); |
265a9e55 | 1600 | if (!NILP (w->hchild)) |
a2889657 JB |
1601 | mark_window_display_accurate (w->hchild, flag); |
1602 | } | |
1603 | ||
1604 | if (flag) | |
1605 | { | |
d45de95b | 1606 | last_arrow_position = COERCE_MARKER (Voverlay_arrow_position); |
a2889657 JB |
1607 | last_arrow_string = Voverlay_arrow_string; |
1608 | } | |
1609 | else | |
1610 | { | |
1611 | /* t is unequal to any useful value of Voverlay_arrow_... */ | |
1612 | last_arrow_position = Qt; | |
1613 | last_arrow_string = Qt; | |
1614 | } | |
1615 | } | |
1616 | \f | |
ecf7de9b | 1617 | /* Update the menu bar item list for frame F. |
90adcf20 | 1618 | This has to be done before we start to fill in any display lines, |
a2725ab2 RS |
1619 | because it can call eval. |
1620 | ||
1621 | If SAVE_MATCH_DATA is 1, we must save and restore it here. */ | |
90adcf20 RS |
1622 | |
1623 | static void | |
a2725ab2 | 1624 | update_menu_bar (f, save_match_data) |
ecf7de9b | 1625 | FRAME_PTR f; |
a2725ab2 | 1626 | int save_match_data; |
90adcf20 | 1627 | { |
90adcf20 | 1628 | struct buffer *old = current_buffer; |
ecf7de9b RS |
1629 | Lisp_Object window; |
1630 | register struct window *w; | |
a2725ab2 | 1631 | |
ecf7de9b RS |
1632 | window = FRAME_SELECTED_WINDOW (f); |
1633 | w = XWINDOW (window); | |
90adcf20 RS |
1634 | |
1635 | if (update_mode_lines) | |
1636 | w->update_mode_line = Qt; | |
1637 | ||
d1e74921 | 1638 | if (FRAME_WINDOW_P (f) |
d3413a53 | 1639 | ? |
dc937613 | 1640 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
cf074754 | 1641 | FRAME_EXTERNAL_MENU_BAR (f) |
78614721 | 1642 | #else |
cf074754 | 1643 | FRAME_MENU_BAR_LINES (f) > 0 |
78614721 | 1644 | #endif |
d3413a53 | 1645 | : FRAME_MENU_BAR_LINES (f) > 0) |
90adcf20 RS |
1646 | { |
1647 | /* If the user has switched buffers or windows, we need to | |
1648 | recompute to reflect the new bindings. But we'll | |
1649 | recompute when update_mode_lines is set too; that means | |
1650 | that people can use force-mode-line-update to request | |
1651 | that the menu bar be recomputed. The adverse effect on | |
1652 | the rest of the redisplay algorithm is about the same as | |
1653 | windows_or_buffers_changed anyway. */ | |
1654 | if (windows_or_buffers_changed | |
cf074754 | 1655 | || !NILP (w->update_mode_line) |
538f13d4 RS |
1656 | || ((BUF_SAVE_MODIFF (XBUFFER (w->buffer)) |
1657 | < BUF_MODIFF (XBUFFER (w->buffer))) | |
1658 | != !NILP (w->last_had_star)) | |
94bb7f9b KH |
1659 | || ((!NILP (Vtransient_mark_mode) |
1660 | && !NILP (XBUFFER (w->buffer)->mark_active)) | |
1661 | != !NILP (w->region_showing))) | |
90adcf20 RS |
1662 | { |
1663 | struct buffer *prev = current_buffer; | |
a2725ab2 RS |
1664 | int count = specpdl_ptr - specpdl; |
1665 | ||
399164b4 | 1666 | set_buffer_internal_1 (XBUFFER (w->buffer)); |
eac4251c | 1667 | if (save_match_data) |
84dd0ae5 | 1668 | record_unwind_protect (Fset_match_data, Fmatch_data (Qnil, Qnil)); |
399164b4 | 1669 | if (NILP (Voverriding_local_map_menu_flag)) |
d46fb96a KH |
1670 | { |
1671 | specbind (Qoverriding_terminal_local_map, Qnil); | |
1672 | specbind (Qoverriding_local_map, Qnil); | |
1673 | } | |
a2725ab2 | 1674 | |
34acc8e6 KH |
1675 | /* Run the Lucid hook. */ |
1676 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
1677 | /* If it has changed current-menubar from previous value, | |
1678 | really recompute the menubar from the value. */ | |
1679 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
1680 | call0 (Qrecompute_lucid_menubar); | |
e02500d4 | 1681 | safe_run_hooks (Qmenu_bar_update_hook); |
8351baf2 | 1682 | FRAME_MENU_BAR_ITEMS (f) = menu_bar_items (FRAME_MENU_BAR_ITEMS (f)); |
538f13d4 | 1683 | /* Redisplay the menu bar in case we changed it. */ |
8f3343d0 | 1684 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
d1e74921 | 1685 | if (FRAME_WINDOW_P (f)) |
d3413a53 | 1686 | set_frame_menubar (f, 0, 0); |
538f13d4 RS |
1687 | else |
1688 | /* On a terminal screen, the menu bar is an ordinary screen | |
1689 | line, and this makes it get updated. */ | |
1690 | w->update_mode_line = Qt; | |
1691 | #else /* ! (USE_X_TOOLKIT || HAVE_NTGUI) */ | |
1692 | /* In the non-toolkit version, the menu bar is an ordinary screen | |
1693 | line, and this makes it get updated. */ | |
1694 | w->update_mode_line = Qt; | |
1695 | #endif /* ! (USE_X_TOOLKIT || HAVE_NTGUI) */ | |
a2725ab2 RS |
1696 | |
1697 | unbind_to (count, Qnil); | |
399164b4 | 1698 | set_buffer_internal_1 (prev); |
90adcf20 RS |
1699 | } |
1700 | } | |
1701 | } | |
1702 | \f | |
a2889657 JB |
1703 | int do_id = 1; |
1704 | ||
90adcf20 RS |
1705 | /* Redisplay WINDOW and its subwindows and siblings. */ |
1706 | ||
a2889657 | 1707 | static void |
e9874cee | 1708 | redisplay_windows (window, preserve_echo_area) |
a2889657 | 1709 | Lisp_Object window; |
e9874cee | 1710 | int preserve_echo_area; |
a2889657 | 1711 | { |
265a9e55 | 1712 | for (; !NILP (window); window = XWINDOW (window)->next) |
e9874cee | 1713 | redisplay_window (window, 0, preserve_echo_area); |
a2889657 JB |
1714 | } |
1715 | ||
1f1ff51d KH |
1716 | /* Return value in display table DP (Lisp_Char_Table *) for character |
1717 | C. Since a display table doesn't have any parent, we don't have to | |
1718 | follow parent. Do not call this function directly but use the | |
1719 | macro DISP_CHAR_VECTOR. */ | |
1720 | Lisp_Object | |
1721 | disp_char_vector (dp, c) | |
1722 | struct Lisp_Char_Table *dp; | |
1723 | int c; | |
1724 | { | |
1725 | int code[4], i; | |
1726 | Lisp_Object val; | |
1727 | ||
1728 | if (SINGLE_BYTE_CHAR_P (c)) return (dp->contents[c]); | |
1729 | ||
1730 | SPLIT_NON_ASCII_CHAR (c, code[0], code[1], code[2]); | |
1731 | if (code[0] != CHARSET_COMPOSITION) | |
1732 | { | |
1733 | if (code[1] < 32) code[1] = -1; | |
1734 | else if (code[2] < 32) code[2] = -1; | |
1735 | } | |
1736 | /* Here, the possible range of CODE[0] (== charset ID) is | |
1737 | 128..MAX_CHARSET. Since the top level char table contains data | |
1738 | for multibyte characters after 256th element, we must increment | |
1739 | CODE[0] by 128 to get a correct index. */ | |
1740 | code[0] += 128; | |
1741 | code[3] = -1; /* anchor */ | |
1742 | ||
1743 | for (i = 0; code[i] >= 0; i++, dp = XCHAR_TABLE (val)) | |
1744 | { | |
1745 | val = dp->contents[code[i]]; | |
1746 | if (!SUB_CHAR_TABLE_P (val)) | |
1747 | return (NILP (val) ? dp->defalt : val); | |
1748 | } | |
1749 | /* Here, VAL is a sub char table. We return the default value of it. */ | |
1750 | return (dp->defalt); | |
1751 | } | |
1752 | ||
90adcf20 RS |
1753 | /* Redisplay window WINDOW and its subwindows. */ |
1754 | ||
a2889657 | 1755 | static void |
e9874cee | 1756 | redisplay_window (window, just_this_one, preserve_echo_area) |
a2889657 | 1757 | Lisp_Object window; |
e9874cee | 1758 | int just_this_one, preserve_echo_area; |
a2889657 JB |
1759 | { |
1760 | register struct window *w = XWINDOW (window); | |
30c566e4 | 1761 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
a2889657 | 1762 | int height; |
12adba34 RS |
1763 | int lpoint = PT; |
1764 | int lpoint_byte = PT_BYTE; | |
a2889657 | 1765 | struct buffer *old = current_buffer; |
b1d1124b | 1766 | register int width = window_internal_width (w) - 1; |
12adba34 | 1767 | register int startp, startp_byte; |
a2889657 JB |
1768 | register int hscroll = XINT (w->hscroll); |
1769 | struct position pos; | |
ae3b1442 | 1770 | int opoint = PT; |
12adba34 | 1771 | int opoint_byte = PT_BYTE; |
a2889657 | 1772 | int tem; |
e481f960 | 1773 | int update_mode_line; |
f908610f | 1774 | struct Lisp_Char_Table *dp = window_display_table (w); |
5ba50c51 | 1775 | int really_switched_buffer = 0; |
2e54982e | 1776 | int count = specpdl_ptr - specpdl; |
a2889657 | 1777 | |
12adba34 RS |
1778 | if (Z == Z_BYTE && lpoint != lpoint_byte) |
1779 | abort (); | |
1780 | if (lpoint_byte < lpoint) | |
1781 | abort (); | |
1782 | ||
44fa5b1e | 1783 | if (FRAME_HEIGHT (f) == 0) abort (); /* Some bug zeros some core */ |
a2889657 JB |
1784 | |
1785 | /* If this is a combination window, do its children; that's all. */ | |
1786 | ||
265a9e55 | 1787 | if (!NILP (w->vchild)) |
a2889657 | 1788 | { |
f9c467a3 | 1789 | redisplay_windows (w->vchild, preserve_echo_area); |
a2889657 JB |
1790 | return; |
1791 | } | |
265a9e55 | 1792 | if (!NILP (w->hchild)) |
a2889657 | 1793 | { |
f9c467a3 | 1794 | redisplay_windows (w->hchild, preserve_echo_area); |
a2889657 JB |
1795 | return; |
1796 | } | |
265a9e55 | 1797 | if (NILP (w->buffer)) |
a2889657 | 1798 | abort (); |
2e54982e RS |
1799 | |
1800 | specbind (Qinhibit_point_motion_hooks, Qt); | |
1801 | ||
8de2d90b | 1802 | height = window_internal_height (w); |
4d641a15 | 1803 | update_mode_line = (!NILP (w->update_mode_line) || update_mode_lines); |
73af359d RS |
1804 | if (XBUFFER (w->buffer)->clip_changed) |
1805 | update_mode_line = 1; | |
8de2d90b JB |
1806 | |
1807 | if (MINI_WINDOW_P (w)) | |
1808 | { | |
73af359d RS |
1809 | if (w == XWINDOW (echo_area_window) && echo_area_glyphs) |
1810 | /* We've already displayed the echo area glyphs in this window. */ | |
1811 | goto finish_scroll_bars; | |
1812 | else if (w != XWINDOW (minibuf_window)) | |
8de2d90b | 1813 | { |
73af359d RS |
1814 | /* This is a minibuffer, but it's not the currently active one, |
1815 | so clear it. */ | |
1816 | int vpos = XFASTINT (w->top); | |
8de2d90b JB |
1817 | int i; |
1818 | ||
1819 | for (i = 0; i < height; i++) | |
1820 | { | |
44fa5b1e | 1821 | get_display_line (f, vpos + i, 0); |
73f194f1 RS |
1822 | display_string (w, vpos + i, "", 0, |
1823 | FRAME_LEFT_SCROLL_BAR_WIDTH (f), | |
a3788d53 | 1824 | 0, 1, 0, width, 0); |
8de2d90b JB |
1825 | } |
1826 | ||
88f22aff | 1827 | goto finish_scroll_bars; |
8de2d90b JB |
1828 | } |
1829 | } | |
a2889657 | 1830 | |
a2889657 JB |
1831 | /* Otherwise set up data on this window; select its buffer and point value */ |
1832 | ||
e481f960 | 1833 | if (update_mode_line) |
5ba50c51 RS |
1834 | /* Really select the buffer, for the sake of buffer-local variables. */ |
1835 | { | |
1836 | set_buffer_internal_1 (XBUFFER (w->buffer)); | |
1837 | really_switched_buffer = 1; | |
1838 | } | |
e481f960 RS |
1839 | else |
1840 | set_buffer_temp (XBUFFER (w->buffer)); | |
1841 | ||
ae3b1442 | 1842 | opoint = PT; |
12adba34 RS |
1843 | opoint_byte = PT_BYTE; |
1844 | ||
1845 | if (Z == Z_BYTE && opoint != opoint_byte) | |
1846 | abort (); | |
1847 | if (opoint_byte < opoint) | |
1848 | abort (); | |
a2889657 | 1849 | |
28995e67 RS |
1850 | /* If %c is in mode line, update it if needed. */ |
1851 | if (!NILP (w->column_number_displayed) | |
1852 | /* This alternative quickly identifies a common case | |
1853 | where no change is needed. */ | |
1854 | && !(PT == XFASTINT (w->last_point) | |
8850a573 RS |
1855 | && XFASTINT (w->last_modified) >= MODIFF |
1856 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF) | |
28995e67 RS |
1857 | && XFASTINT (w->column_number_displayed) != current_column ()) |
1858 | update_mode_line = 1; | |
1859 | ||
42640f83 RS |
1860 | /* Count number of windows showing the selected buffer. |
1861 | An indirect buffer counts as its base buffer. */ | |
a2889657 | 1862 | |
42640f83 RS |
1863 | if (!just_this_one) |
1864 | { | |
1865 | struct buffer *current_base, *window_base; | |
1866 | current_base = current_buffer; | |
1867 | window_base = XBUFFER (XWINDOW (selected_window)->buffer); | |
1868 | if (current_base->base_buffer) | |
1869 | current_base = current_base->base_buffer; | |
1870 | if (window_base->base_buffer) | |
1871 | window_base = window_base->base_buffer; | |
1872 | if (current_base == window_base) | |
1873 | buffer_shared++; | |
1874 | } | |
a2889657 JB |
1875 | |
1876 | /* POINT refers normally to the selected window. | |
1877 | For any other window, set up appropriate value. */ | |
1878 | ||
1879 | if (!EQ (window, selected_window)) | |
1880 | { | |
12adba34 RS |
1881 | int new_pt = XMARKER (w->pointm)->charpos; |
1882 | int new_pt_byte = marker_byte_position (w->pointm); | |
f67a0f51 | 1883 | if (new_pt < BEGV) |
a2889657 | 1884 | { |
f67a0f51 | 1885 | new_pt = BEGV; |
12adba34 RS |
1886 | new_pt_byte = BEGV_BYTE; |
1887 | set_marker_both (w->pointm, Qnil, BEGV, BEGV_BYTE); | |
a2889657 | 1888 | } |
f67a0f51 | 1889 | else if (new_pt > (ZV - 1)) |
a2889657 | 1890 | { |
f67a0f51 | 1891 | new_pt = ZV; |
12adba34 RS |
1892 | new_pt_byte = ZV_BYTE; |
1893 | set_marker_both (w->pointm, Qnil, ZV, ZV_BYTE); | |
a2889657 | 1894 | } |
f67a0f51 | 1895 | /* We don't use SET_PT so that the point-motion hooks don't run. */ |
12adba34 | 1896 | TEMP_SET_PT_BOTH (new_pt, new_pt_byte); |
a2889657 JB |
1897 | } |
1898 | ||
f4faa47c JB |
1899 | /* If any of the character widths specified in the display table |
1900 | have changed, invalidate the width run cache. It's true that this | |
1901 | may be a bit late to catch such changes, but the rest of | |
1902 | redisplay goes (non-fatally) haywire when the display table is | |
1903 | changed, so why should we worry about doing any better? */ | |
1904 | if (current_buffer->width_run_cache) | |
1905 | { | |
f908610f | 1906 | struct Lisp_Char_Table *disptab = buffer_display_table (); |
f4faa47c JB |
1907 | |
1908 | if (! disptab_matches_widthtab (disptab, | |
1909 | XVECTOR (current_buffer->width_table))) | |
1910 | { | |
1911 | invalidate_region_cache (current_buffer, | |
1912 | current_buffer->width_run_cache, | |
1913 | BEG, Z); | |
1914 | recompute_width_table (current_buffer, disptab); | |
1915 | } | |
1916 | } | |
1917 | ||
a2889657 | 1918 | /* If window-start is screwed up, choose a new one. */ |
a2889657 JB |
1919 | if (XMARKER (w->start)->buffer != current_buffer) |
1920 | goto recenter; | |
1921 | ||
1922 | startp = marker_position (w->start); | |
12adba34 | 1923 | startp_byte = marker_byte_position (w->start); |
a2889657 | 1924 | |
cf0df6ab RS |
1925 | /* If someone specified a new starting point but did not insist, |
1926 | check whether it can be used. */ | |
81d2de9b RS |
1927 | if (!NILP (w->optional_new_start) |
1928 | && startp >= BEGV && startp <= ZV) | |
cf0df6ab RS |
1929 | { |
1930 | w->optional_new_start = Qnil; | |
1931 | /* Check whether this start pos is usable given where point is. */ | |
1932 | ||
1933 | pos = *compute_motion (startp, 0, | |
1934 | (((EQ (window, minibuf_window) | |
1935 | && startp == BEG) | |
1936 | ? minibuf_prompt_width : 0) | |
1937 | + (hscroll ? 1 - hscroll : 0)), | |
1938 | 0, | |
1c9241f5 KH |
1939 | PT, height, |
1940 | /* BUG FIX: See the comment of | |
1941 | Fpos_visible_in_window_p (window.c). */ | |
1942 | - (1 << (BITS_PER_SHORT - 1)), | |
12adba34 RS |
1943 | width, hscroll, |
1944 | pos_tab_offset (w, startp, startp_byte), w); | |
cf0df6ab RS |
1945 | /* If PT does fit on the screen, we will use this start pos, |
1946 | so do so by setting force_start. */ | |
1947 | if (pos.bufpos == PT) | |
1948 | w->force_start = Qt; | |
1949 | } | |
1950 | ||
8de2d90b | 1951 | /* Handle case where place to start displaying has been specified, |
aa6d10fa | 1952 | unless the specified location is outside the accessible range. */ |
265a9e55 | 1953 | if (!NILP (w->force_start)) |
a2889657 | 1954 | { |
e63574d7 | 1955 | w->force_start = Qnil; |
aa6d10fa RS |
1956 | /* Forget any recorded base line for line number display. */ |
1957 | w->base_line_number = Qnil; | |
b5174a51 RS |
1958 | /* The old bottom-of-screen position is no longer valid. */ |
1959 | w->window_end_valid = Qnil; | |
75c43375 RS |
1960 | /* Redisplay the mode line. Select the buffer properly for that. |
1961 | Also, run the hook window-scroll-functions | |
1962 | because we have scrolled. */ | |
e63574d7 RS |
1963 | /* Note, we do this after clearing force_start because |
1964 | if there's an error, it is better to forget about force_start | |
1965 | than to get into an infinite loop calling the hook functions | |
1966 | and having them get more errors. */ | |
75c43375 RS |
1967 | if (!update_mode_line |
1968 | || ! NILP (Vwindow_scroll_functions)) | |
e481f960 | 1969 | { |
75c43375 RS |
1970 | Lisp_Object temp[3]; |
1971 | ||
5ba50c51 RS |
1972 | if (!really_switched_buffer) |
1973 | { | |
1974 | set_buffer_temp (old); | |
1975 | set_buffer_internal_1 (XBUFFER (w->buffer)); | |
1976 | } | |
1977 | really_switched_buffer = 1; | |
e481f960 RS |
1978 | update_mode_line = 1; |
1979 | w->update_mode_line = Qt; | |
75c43375 | 1980 | if (! NILP (Vwindow_scroll_functions)) |
3dcd07e3 KH |
1981 | { |
1982 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
1983 | make_number (startp)); | |
1984 | startp = marker_position (w->start); | |
84920a5c | 1985 | startp_byte = marker_byte_position (w->start); |
3dcd07e3 | 1986 | } |
e481f960 | 1987 | } |
c2213350 | 1988 | XSETFASTINT (w->last_modified, 0); |
8850a573 | 1989 | XSETFASTINT (w->last_overlay_modified, 0); |
12adba34 RS |
1990 | if (startp < BEGV) startp = BEGV, startp_byte = BEGV_BYTE; |
1991 | if (startp > ZV) startp = ZV, startp = ZV_BYTE; | |
a2889657 JB |
1992 | try_window (window, startp); |
1993 | if (cursor_vpos < 0) | |
1994 | { | |
1995 | /* If point does not appear, move point so it does appear */ | |
1996 | pos = *compute_motion (startp, 0, | |
ca26e1c8 KH |
1997 | (((EQ (window, minibuf_window) |
1998 | && startp == BEG) | |
1999 | ? minibuf_prompt_width : 0) | |
2000 | + (hscroll ? 1 - hscroll : 0)), | |
2001 | 0, | |
2002 | ZV, height / 2, | |
68be917d | 2003 | - (1 << (BITS_PER_SHORT - 1)), |
12adba34 RS |
2004 | width, hscroll, |
2005 | pos_tab_offset (w, startp, startp_byte), | |
2006 | w); | |
2007 | TEMP_SET_PT_BOTH (pos.bufpos, pos.bytepos); | |
90adcf20 | 2008 | if (w != XWINDOW (selected_window)) |
12adba34 | 2009 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
a2889657 JB |
2010 | else |
2011 | { | |
9d6a6bb9 | 2012 | if (current_buffer == old) |
12adba34 RS |
2013 | { |
2014 | lpoint = PT; | |
2015 | lpoint_byte = PT_BYTE; | |
2016 | } | |
73f194f1 | 2017 | FRAME_CURSOR_X (f) = (WINDOW_LEFT_MARGIN (w) |
210e752f | 2018 | + minmax (0, pos.hpos, width)); |
44fa5b1e | 2019 | FRAME_CURSOR_Y (f) = pos.vpos + XFASTINT (w->top); |
a2889657 | 2020 | } |
df0b5ea1 RS |
2021 | /* If we are highlighting the region, |
2022 | then we just changed the region, so redisplay to show it. */ | |
df0b5ea1 RS |
2023 | if (!NILP (Vtransient_mark_mode) |
2024 | && !NILP (current_buffer->mark_active)) | |
6f27fa9b RS |
2025 | { |
2026 | cancel_my_columns (XWINDOW (window)); | |
2027 | try_window (window, startp); | |
2028 | } | |
a2889657 JB |
2029 | } |
2030 | goto done; | |
2031 | } | |
2032 | ||
2033 | /* Handle case where text has not changed, only point, | |
208aee63 | 2034 | and it has not moved off the frame. */ |
a2889657 JB |
2035 | |
2036 | /* This code is not used for minibuffer for the sake of | |
2037 | the case of redisplaying to replace an echo area message; | |
2038 | since in that case the minibuffer contents per se are usually unchanged. | |
2039 | This code is of no real use in the minibuffer since | |
2040 | the handling of this_line_bufpos, etc., | |
2041 | in redisplay handles the same cases. */ | |
2042 | ||
2043 | if (XFASTINT (w->last_modified) >= MODIFF | |
8850a573 | 2044 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF |
86bee31c | 2045 | && PT >= startp && !current_buffer->clip_changed |
73f194f1 | 2046 | && (just_this_one || WINDOW_FULL_WIDTH_P (w)) |
b1aa6cb3 RS |
2047 | /* If force-mode-line-update was called, really redisplay; |
2048 | that's how redisplay is forced after e.g. changing | |
2049 | buffer-invisibility-spec. */ | |
632ab665 | 2050 | && NILP (w->update_mode_line) |
bd66d1ba RS |
2051 | /* Can't use this case if highlighting a region. */ |
2052 | && !(!NILP (Vtransient_mark_mode) && !NILP (current_buffer->mark_active)) | |
2053 | && NILP (w->region_showing) | |
15495c73 KH |
2054 | /* If end pos is out of date, scroll bar and percentage will be wrong */ |
2055 | && INTEGERP (w->window_end_vpos) | |
2056 | && XFASTINT (w->window_end_vpos) < XFASTINT (w->height) | |
d45de95b | 2057 | && !EQ (window, minibuf_window) |
377dbd97 RS |
2058 | && (!MARKERP (Voverlay_arrow_position) |
2059 | || current_buffer != XMARKER (Voverlay_arrow_position)->buffer)) | |
a2889657 | 2060 | { |
377dbd97 RS |
2061 | /* All positions in this clause are relative to the window edge. */ |
2062 | ||
9afd2168 | 2063 | int this_scroll_margin = scroll_margin; |
9c5886e7 | 2064 | int last_point_y = XFASTINT (w->last_point_y) - XINT (w->top); |
377dbd97 | 2065 | int last_point_x = (XFASTINT (w->last_point_x) - WINDOW_LEFT_MARGIN (w)); |
9afd2168 | 2066 | |
4cb46737 | 2067 | /* Find where PT is located now on the frame. */ |
916848d8 RS |
2068 | /* Check just_this_one as a way of verifying that the |
2069 | window edges have not changed. */ | |
e6b50639 RS |
2070 | if (PT == XFASTINT (w->last_point) && just_this_one |
2071 | /* If CURSOR_IN_ECHO_AREA, last_point_x and last_point_y | |
2072 | refer to the echo area and are not related to this window. */ | |
2073 | && ! cursor_in_echo_area) | |
4cb46737 | 2074 | { |
916848d8 RS |
2075 | pos.hpos = last_point_x; |
2076 | pos.vpos = last_point_y; | |
4cb46737 RS |
2077 | pos.bufpos = PT; |
2078 | } | |
9c5886e7 | 2079 | else if (PT > XFASTINT (w->last_point) |
e6b50639 | 2080 | && ! cursor_in_echo_area |
d802580c RS |
2081 | && XFASTINT (w->last_point) > startp && just_this_one |
2082 | /* We can't use this if point is in the left margin of a | |
2083 | hscrolled window, because w->last_point_x has been | |
2084 | clipped to the window edges. */ | |
2085 | && !(last_point_x <= 0 && hscroll)) | |
4cb46737 | 2086 | { |
5ffc0a80 KH |
2087 | int last_point = XFASTINT (w->last_point); |
2088 | int last_point_byte = CHAR_TO_BYTE (last_point); | |
4a4c24d0 RS |
2089 | int tab_offset = (pos_tab_offset (w, last_point, last_point_byte) |
2090 | - (last_point_x + hscroll - !! hscroll)); | |
5ffc0a80 KH |
2091 | |
2092 | pos = *compute_motion (last_point, last_point_y, last_point_x, 0, | |
4cb46737 | 2093 | PT, height, |
4a4c24d0 | 2094 | /* BUG FIX: See the comment of |
4cb46737 RS |
2095 | Fpos_visible_in_window_p (window.c). */ |
2096 | - (1 << (BITS_PER_SHORT - 1)), | |
2097 | width, hscroll, | |
4a4c24d0 | 2098 | tab_offset, |
12adba34 | 2099 | w); |
4cb46737 RS |
2100 | } |
2101 | else | |
2102 | { | |
2103 | pos = *compute_motion (startp, 0, (hscroll ? 1 - hscroll : 0), 0, | |
2104 | PT, height, | |
2105 | /* BUG FIX: See the comment of | |
2106 | Fpos_visible_in_window_p (window.c). */ | |
2107 | - (1 << (BITS_PER_SHORT - 1)), | |
2108 | width, hscroll, | |
12adba34 RS |
2109 | pos_tab_offset (w, startp, startp_byte), |
2110 | w); | |
4cb46737 | 2111 | } |
a2889657 | 2112 | |
9afd2168 RS |
2113 | /* Don't use a scroll margin that is negative or too large. */ |
2114 | if (this_scroll_margin < 0) | |
2115 | this_scroll_margin = 0; | |
2116 | ||
2117 | if (XINT (w->height) < 4 * scroll_margin) | |
2118 | this_scroll_margin = XINT (w->height) / 4; | |
2119 | ||
2120 | /* If point fits on the screen, and not within the scroll margin, | |
2121 | we are ok. */ | |
2122 | if (pos.vpos < height - this_scroll_margin | |
2123 | && (pos.vpos >= this_scroll_margin || startp == BEGV)) | |
a2889657 | 2124 | { |
44fa5b1e JB |
2125 | /* Ok, point is still on frame */ |
2126 | if (w == XWINDOW (FRAME_SELECTED_WINDOW (f))) | |
a2889657 JB |
2127 | { |
2128 | /* These variables are supposed to be origin 1 */ | |
73f194f1 | 2129 | FRAME_CURSOR_X (f) = (WINDOW_LEFT_MARGIN (w) |
210e752f | 2130 | + minmax (0, pos.hpos, width)); |
44fa5b1e | 2131 | FRAME_CURSOR_Y (f) = pos.vpos + XFASTINT (w->top); |
a2889657 JB |
2132 | } |
2133 | /* This doesn't do the trick, because if a window to the right of | |
2134 | this one must be redisplayed, this does nothing because there | |
44fa5b1e | 2135 | is nothing in DesiredFrame yet, and then the other window is |
a2889657 | 2136 | redisplayed, making likes that are empty in this window's columns. |
73f194f1 | 2137 | if (WINDOW_FULL_WIDTH_P (w)) |
a2889657 JB |
2138 | preserve_my_columns (w); |
2139 | */ | |
abb4c08f KH |
2140 | if (current_buffer->clip_changed |
2141 | && ! NILP (Vwindow_scroll_functions)) | |
2142 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2143 | make_number (marker_position (w->start))); | |
2144 | ||
a2889657 JB |
2145 | goto done; |
2146 | } | |
2147 | /* Don't bother trying redisplay with same start; | |
09cacf9c | 2148 | we already know it will lose. */ |
a2889657 JB |
2149 | } |
2150 | /* If current starting point was originally the beginning of a line | |
2151 | but no longer is, find a new starting point. */ | |
265a9e55 | 2152 | else if (!NILP (w->start_at_line_beg) |
b16234d8 | 2153 | && !(startp <= BEGV |
12adba34 | 2154 | || FETCH_BYTE (startp_byte - 1) == '\n')) |
a2889657 JB |
2155 | { |
2156 | goto recenter; | |
2157 | } | |
2158 | else if (just_this_one && !MINI_WINDOW_P (w) | |
ae3b1442 | 2159 | && PT >= startp |
a2889657 | 2160 | && XFASTINT (w->last_modified) |
14709f21 JB |
2161 | /* or else vmotion on first line won't work. */ |
2162 | && ! NILP (w->start_at_line_beg) | |
a2889657 | 2163 | && ! EQ (w->window_end_valid, Qnil) |
86bee31c | 2164 | && do_id && !current_buffer->clip_changed |
a2889657 | 2165 | && !blank_end_of_window |
73f194f1 | 2166 | && WINDOW_FULL_WIDTH_P (w) |
bd66d1ba RS |
2167 | /* Can't use this case if highlighting a region. */ |
2168 | && !(!NILP (Vtransient_mark_mode) | |
2169 | && !NILP (current_buffer->mark_active)) | |
23c852cb KH |
2170 | /* Don't use try_window_id if newline |
2171 | doesn't display as the end of a line. */ | |
2172 | && !(dp != 0 && VECTORP (DISP_CHAR_VECTOR (dp, '\n'))) | |
bd66d1ba | 2173 | && NILP (w->region_showing) |
d45de95b | 2174 | && EQ (last_arrow_position, COERCE_MARKER (Voverlay_arrow_position)) |
a2889657 | 2175 | && EQ (last_arrow_string, Voverlay_arrow_string) |
44fa5b1e | 2176 | && (tem = try_window_id (FRAME_SELECTED_WINDOW (f))) |
a2889657 JB |
2177 | && tem != -2) |
2178 | { | |
2179 | /* tem > 0 means success. tem == -1 means choose new start. | |
2180 | tem == -2 means try again with same start, | |
2181 | and nothing but whitespace follows the changed stuff. | |
2182 | tem == 0 means try again with same start. */ | |
2183 | if (tem > 0) | |
2184 | goto done; | |
2185 | } | |
2186 | else if (startp >= BEGV && startp <= ZV | |
e9874cee RS |
2187 | && (startp < ZV |
2188 | /* Avoid starting at end of buffer. */ | |
2189 | #if 0 /* This change causes trouble for M-! finger & RET. | |
2190 | It will have to be considered later. */ | |
2191 | || ! EQ (window, selected_window) | |
2192 | /* Don't do the recentering if redisplay | |
2193 | is not for no user action. */ | |
2194 | || preserve_echo_area | |
2195 | #endif | |
2196 | || startp == BEGV | |
8850a573 RS |
2197 | || (XFASTINT (w->last_modified) >= MODIFF |
2198 | && XFASTINT (w->last_overlay_modified) >= OVERLAY_MODIFF))) | |
a2889657 JB |
2199 | { |
2200 | /* Try to redisplay starting at same place as before */ | |
44fa5b1e | 2201 | /* If point has not moved off frame, accept the results */ |
a2889657 JB |
2202 | try_window (window, startp); |
2203 | if (cursor_vpos >= 0) | |
aa6d10fa | 2204 | { |
28995e67 RS |
2205 | if (!just_this_one || current_buffer->clip_changed |
2206 | || beg_unchanged < startp) | |
aa6d10fa RS |
2207 | /* Forget any recorded base line for line number display. */ |
2208 | w->base_line_number = Qnil; | |
abb4c08f KH |
2209 | |
2210 | if (current_buffer->clip_changed | |
2211 | && ! NILP (Vwindow_scroll_functions)) | |
2212 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2213 | make_number (marker_position (w->start))); | |
2214 | ||
aa6d10fa RS |
2215 | goto done; |
2216 | } | |
a2889657 JB |
2217 | else |
2218 | cancel_my_columns (w); | |
2219 | } | |
2220 | ||
c2213350 | 2221 | XSETFASTINT (w->last_modified, 0); |
8850a573 | 2222 | XSETFASTINT (w->last_overlay_modified, 0); |
e481f960 RS |
2223 | /* Redisplay the mode line. Select the buffer properly for that. */ |
2224 | if (!update_mode_line) | |
2225 | { | |
5ba50c51 RS |
2226 | if (!really_switched_buffer) |
2227 | { | |
2228 | set_buffer_temp (old); | |
2229 | set_buffer_internal_1 (XBUFFER (w->buffer)); | |
2230 | } | |
e481f960 RS |
2231 | update_mode_line = 1; |
2232 | w->update_mode_line = Qt; | |
2233 | } | |
a2889657 JB |
2234 | |
2235 | /* Try to scroll by specified few lines */ | |
2236 | ||
09cacf9c RS |
2237 | if ((scroll_conservatively || scroll_step) |
2238 | && !current_buffer->clip_changed | |
0789adb2 RS |
2239 | && startp >= BEGV && startp <= ZV) |
2240 | { | |
f9c8af06 | 2241 | int this_scroll_margin = scroll_margin; |
84920a5c | 2242 | int scroll_margin_pos, scroll_margin_bytepos; |
09cacf9c | 2243 | int scroll_max = scroll_step; |
5936754e RS |
2244 | Lisp_Object ltemp; |
2245 | ||
09cacf9c RS |
2246 | if (scroll_conservatively) |
2247 | scroll_max = scroll_conservatively; | |
f9c8af06 RS |
2248 | |
2249 | /* Don't use a scroll margin that is negative or too large. */ | |
2250 | if (this_scroll_margin < 0) | |
2251 | this_scroll_margin = 0; | |
2252 | ||
44173109 | 2253 | if (XINT (w->height) < 4 * this_scroll_margin) |
f9c8af06 RS |
2254 | this_scroll_margin = XINT (w->height) / 4; |
2255 | ||
5936754e RS |
2256 | ltemp = Fwindow_end (window, Qt); |
2257 | scroll_margin_pos = XINT (ltemp); | |
2258 | ||
44173109 RS |
2259 | if (this_scroll_margin) |
2260 | { | |
2261 | pos = *vmotion (scroll_margin_pos, -this_scroll_margin, w); | |
2262 | scroll_margin_pos = pos.bufpos; | |
84920a5c | 2263 | scroll_margin_bytepos = pos.bytepos; |
44173109 | 2264 | } |
84920a5c AS |
2265 | else |
2266 | scroll_margin_bytepos = CHAR_TO_BYTE (scroll_margin_pos); | |
2267 | ||
44173109 | 2268 | if (PT >= scroll_margin_pos) |
0789adb2 RS |
2269 | { |
2270 | struct position pos; | |
44173109 | 2271 | pos = *compute_motion (scroll_margin_pos, 0, 0, 0, |
0789adb2 RS |
2272 | PT, XFASTINT (w->height), 0, |
2273 | XFASTINT (w->width), XFASTINT (w->hscroll), | |
84920a5c AS |
2274 | pos_tab_offset (w, scroll_margin_pos, |
2275 | scroll_margin_bytepos), | |
12adba34 | 2276 | w); |
09cacf9c | 2277 | if (pos.vpos >= scroll_max) |
0789adb2 RS |
2278 | goto scroll_fail_1; |
2279 | ||
09cacf9c RS |
2280 | pos = *vmotion (startp, |
2281 | scroll_conservatively ? pos.vpos + 1 : scroll_step, | |
2282 | w); | |
0789adb2 | 2283 | |
b5174a51 RS |
2284 | /* The old bottom-of-screen position is no longer valid. */ |
2285 | w->window_end_valid = Qnil; | |
0789adb2 RS |
2286 | if (! NILP (Vwindow_scroll_functions)) |
2287 | { | |
12adba34 | 2288 | set_marker_both (w->start, Qnil, pos.bufpos, pos.bytepos); |
0789adb2 RS |
2289 | run_hook_with_args_2 (Qwindow_scroll_functions, window, |
2290 | make_number (pos.bufpos)); | |
2291 | pos.bufpos = marker_position (w->start); | |
2292 | } | |
2293 | try_window (window, pos.bufpos); | |
2294 | if (cursor_vpos >= 0) | |
2295 | { | |
2296 | if (!just_this_one || current_buffer->clip_changed | |
2297 | || beg_unchanged < startp) | |
2298 | /* Forget any recorded base line for line number display. */ | |
2299 | w->base_line_number = Qnil; | |
2300 | goto done; | |
2301 | } | |
2302 | else | |
2303 | cancel_my_columns (w); | |
2304 | } | |
44173109 RS |
2305 | |
2306 | scroll_margin_pos = startp; | |
2307 | if (this_scroll_margin) | |
2308 | { | |
2309 | pos = *vmotion (scroll_margin_pos, this_scroll_margin, w); | |
2310 | scroll_margin_pos = pos.bufpos; | |
2311 | } | |
2312 | if (PT < scroll_margin_pos) | |
0789adb2 RS |
2313 | { |
2314 | struct position pos; | |
2315 | pos = *compute_motion (PT, 0, 0, 0, | |
44173109 | 2316 | scroll_margin_pos, XFASTINT (w->height), 0, |
0789adb2 | 2317 | XFASTINT (w->width), XFASTINT (w->hscroll), |
84920a5c | 2318 | pos_tab_offset (w, PT, PT_BYTE), |
12adba34 | 2319 | w); |
09cacf9c | 2320 | if (pos.vpos > scroll_max) |
0789adb2 RS |
2321 | goto scroll_fail_1; |
2322 | ||
09cacf9c RS |
2323 | pos = *vmotion (startp, |
2324 | scroll_conservatively ? -pos.vpos : - scroll_step, | |
2325 | w); | |
0789adb2 | 2326 | |
b5174a51 RS |
2327 | /* The old bottom-of-screen position is no longer valid. */ |
2328 | w->window_end_valid = Qnil; | |
0789adb2 RS |
2329 | if (! NILP (Vwindow_scroll_functions)) |
2330 | { | |
12adba34 | 2331 | set_marker_both (w->start, Qnil, pos.bufpos, pos.bytepos); |
0789adb2 RS |
2332 | run_hook_with_args_2 (Qwindow_scroll_functions, window, |
2333 | make_number (pos.bufpos)); | |
2334 | pos.bufpos = marker_position (w->start); | |
2335 | } | |
2336 | try_window (window, pos.bufpos); | |
2337 | if (cursor_vpos >= 0) | |
2338 | { | |
2339 | if (!just_this_one || current_buffer->clip_changed | |
2340 | || beg_unchanged < startp) | |
2341 | /* Forget any recorded base line for line number display. */ | |
2342 | w->base_line_number = Qnil; | |
2343 | goto done; | |
2344 | } | |
2345 | else | |
2346 | cancel_my_columns (w); | |
2347 | } | |
2348 | scroll_fail_1: ; | |
2349 | } | |
2350 | ||
09cacf9c RS |
2351 | #if 0 |
2352 | if (scroll_step && ! scroll_margin && !current_buffer->clip_changed | |
2c081c2d | 2353 | && startp >= BEGV && startp <= ZV) |
a2889657 | 2354 | { |
09cacf9c RS |
2355 | if (margin_call == 0) |
2356 | margin_call = (PT > startp ? 1 : -1); | |
2357 | if (margin_call > 0) | |
a2889657 | 2358 | { |
210e752f | 2359 | pos = *vmotion (Z - XFASTINT (w->window_end_pos), scroll_step, w); |
a2889657 JB |
2360 | if (pos.vpos >= height) |
2361 | goto scroll_fail; | |
2362 | } | |
2363 | ||
09cacf9c RS |
2364 | pos = *vmotion (startp, (margin_call < 0 ? - scroll_step : scroll_step), |
2365 | w); | |
a2889657 | 2366 | |
ae3b1442 | 2367 | if (PT >= pos.bufpos) |
a2889657 | 2368 | { |
b5174a51 RS |
2369 | /* The old bottom-of-screen position is no longer valid. */ |
2370 | w->window_end_valid = Qnil; | |
2371 | ||
75c43375 | 2372 | if (! NILP (Vwindow_scroll_functions)) |
3dcd07e3 | 2373 | { |
12adba34 | 2374 | set_marker_both (w->start, Qnil, pos.bufpos, pos.bytepos); |
3dcd07e3 KH |
2375 | run_hook_with_args_2 (Qwindow_scroll_functions, window, |
2376 | make_number (pos.bufpos)); | |
2377 | pos.bufpos = marker_position (w->start); | |
2378 | } | |
a2889657 JB |
2379 | try_window (window, pos.bufpos); |
2380 | if (cursor_vpos >= 0) | |
aa6d10fa | 2381 | { |
28995e67 RS |
2382 | if (!just_this_one || current_buffer->clip_changed |
2383 | || beg_unchanged < startp) | |
aa6d10fa RS |
2384 | /* Forget any recorded base line for line number display. */ |
2385 | w->base_line_number = Qnil; | |
2386 | goto done; | |
2387 | } | |
a2889657 JB |
2388 | else |
2389 | cancel_my_columns (w); | |
2390 | } | |
2391 | scroll_fail: ; | |
2392 | } | |
09cacf9c | 2393 | #endif |
a2889657 JB |
2394 | |
2395 | /* Finally, just choose place to start which centers point */ | |
2396 | ||
2397 | recenter: | |
aa6d10fa RS |
2398 | /* Forget any previously recorded base line for line number display. */ |
2399 | w->base_line_number = Qnil; | |
2400 | ||
210e752f | 2401 | pos = *vmotion (PT, - (height / 2), w); |
010494d0 KH |
2402 | |
2403 | /* The minibuffer is often just one line. Ordinary scrolling | |
2404 | gives little overlap and looks bad. So show 20 chars before point. */ | |
2405 | if (height == 1 | |
2406 | && (pos.bufpos >= PT - minibuffer_scroll_overlap | |
2407 | /* If we scrolled less than 1/2 line forward, we will | |
2408 | get too much overlap, so change to the usual amount. */ | |
2409 | || pos.bufpos < startp + width / 2) | |
2410 | && PT > BEGV + minibuffer_scroll_overlap | |
2411 | /* If we scrolled to an actual line boundary, | |
2412 | that's different; don't ignore line boundaries. */ | |
f1c87a7d | 2413 | && FETCH_BYTE (pos.bytepos - 1) != '\n') |
835766b6 RS |
2414 | { |
2415 | pos.bufpos = PT - minibuffer_scroll_overlap; | |
2416 | pos.bytepos = CHAR_TO_BYTE (pos.bufpos); | |
2417 | } | |
010494d0 | 2418 | |
e63574d7 RS |
2419 | /* Set startp here explicitly in case that helps avoid an infinite loop |
2420 | in case the window-scroll-functions functions get errors. */ | |
12adba34 | 2421 | set_marker_both (w->start, Qnil, pos.bufpos, pos.bytepos); |
b5174a51 RS |
2422 | |
2423 | /* The old bottom-of-screen position is no longer valid. */ | |
2424 | w->window_end_valid = Qnil; | |
75c43375 | 2425 | if (! NILP (Vwindow_scroll_functions)) |
3dcd07e3 KH |
2426 | { |
2427 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2428 | make_number (pos.bufpos)); | |
2429 | pos.bufpos = marker_position (w->start); | |
835766b6 | 2430 | pos.bytepos = marker_byte_position (w->start); |
3dcd07e3 | 2431 | } |
a2889657 JB |
2432 | try_window (window, pos.bufpos); |
2433 | ||
2434 | startp = marker_position (w->start); | |
12adba34 | 2435 | startp_byte = marker_byte_position (w->start); |
ca26e1c8 | 2436 | w->start_at_line_beg |
12adba34 | 2437 | = (startp == BEGV || FETCH_BYTE (startp_byte - 1) == '\n') ? Qt : Qnil; |
a2889657 JB |
2438 | |
2439 | done: | |
e481f960 | 2440 | if ((update_mode_line |
aa6d10fa RS |
2441 | /* If window not full width, must redo its mode line |
2442 | if the window to its side is being redone */ | |
73f194f1 | 2443 | || (!just_this_one && !WINDOW_FULL_WIDTH_P (w)) |
155ef550 KH |
2444 | || INTEGERP (w->base_line_pos) |
2445 | || (!NILP (w->column_number_displayed) | |
2446 | && XFASTINT (w->column_number_displayed) != current_column ())) | |
a2889657 | 2447 | && height != XFASTINT (w->height)) |
5ba50c51 RS |
2448 | { |
2449 | FRAME_PTR oframe = selected_frame; | |
2450 | if (!really_switched_buffer) | |
2451 | { | |
2452 | set_buffer_temp (old); | |
2453 | set_buffer_internal_1 (XBUFFER (w->buffer)); | |
2454 | really_switched_buffer = 1; | |
2455 | } | |
2456 | selected_frame = f; | |
2457 | display_mode_line (w); | |
2458 | selected_frame = oframe; | |
2459 | } | |
aa6d10fa RS |
2460 | if (! line_number_displayed |
2461 | && ! BUFFERP (w->base_line_pos)) | |
2462 | { | |
2463 | w->base_line_pos = Qnil; | |
2464 | w->base_line_number = Qnil; | |
2465 | } | |
a2889657 | 2466 | |
7ce2c095 | 2467 | /* When we reach a frame's selected window, redo the frame's menu bar. */ |
e481f960 | 2468 | if (update_mode_line |
d1e74921 | 2469 | && (FRAME_WINDOW_P (f) |
d3413a53 | 2470 | ? |
dc937613 | 2471 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
d3413a53 | 2472 | FRAME_EXTERNAL_MENU_BAR (f) |
76412d64 | 2473 | #else |
d3413a53 | 2474 | FRAME_MENU_BAR_LINES (f) > 0 |
76412d64 | 2475 | #endif |
d3413a53 | 2476 | : FRAME_MENU_BAR_LINES (f) > 0) |
7ce2c095 RS |
2477 | && EQ (FRAME_SELECTED_WINDOW (f), window)) |
2478 | display_menu_bar (w); | |
2479 | ||
88f22aff JB |
2480 | finish_scroll_bars: |
2481 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
30c566e4 | 2482 | { |
b1d1124b | 2483 | int start, end, whole; |
30c566e4 | 2484 | |
b1d1124b | 2485 | /* Calculate the start and end positions for the current window. |
3505ea70 JB |
2486 | At some point, it would be nice to choose between scrollbars |
2487 | which reflect the whole buffer size, with special markers | |
2488 | indicating narrowing, and scrollbars which reflect only the | |
2489 | visible region. | |
2490 | ||
b1d1124b JB |
2491 | Note that minibuffers sometimes aren't displaying any text. */ |
2492 | if (! MINI_WINDOW_P (w) | |
2493 | || (w == XWINDOW (minibuf_window) && ! echo_area_glyphs)) | |
2494 | { | |
8a9311d7 | 2495 | whole = ZV - BEGV; |
4d641a15 | 2496 | start = marker_position (w->start) - BEGV; |
b1d1124b JB |
2497 | /* I don't think this is guaranteed to be right. For the |
2498 | moment, we'll pretend it is. */ | |
85f26be9 | 2499 | end = (Z - XINT (w->window_end_pos)) - BEGV; |
3505ea70 JB |
2500 | |
2501 | if (end < start) end = start; | |
8a9311d7 | 2502 | if (whole < (end - start)) whole = end - start; |
b1d1124b JB |
2503 | } |
2504 | else | |
2505 | start = end = whole = 0; | |
30c566e4 | 2506 | |
88f22aff | 2507 | /* Indicate what this scroll bar ought to be displaying now. */ |
7eb9ba41 | 2508 | (*set_vertical_scroll_bar_hook) (w, end - start, whole, start); |
30c566e4 | 2509 | |
88f22aff | 2510 | /* Note that we actually used the scroll bar attached to this window, |
30c566e4 | 2511 | so it shouldn't be deleted at the end of redisplay. */ |
88f22aff | 2512 | (*redeem_scroll_bar_hook) (w); |
30c566e4 | 2513 | } |
b1d1124b | 2514 | |
12adba34 | 2515 | TEMP_SET_PT_BOTH (opoint, opoint_byte); |
5ba50c51 | 2516 | if (really_switched_buffer) |
f72df6ac | 2517 | set_buffer_internal_1 (old); |
e481f960 RS |
2518 | else |
2519 | set_buffer_temp (old); | |
12adba34 | 2520 | TEMP_SET_PT_BOTH (lpoint, lpoint_byte); |
2e54982e RS |
2521 | |
2522 | unbind_to (count, Qnil); | |
a2889657 JB |
2523 | } |
2524 | \f | |
2525 | /* Do full redisplay on one window, starting at position `pos'. */ | |
2526 | ||
2527 | static void | |
2528 | try_window (window, pos) | |
2529 | Lisp_Object window; | |
2530 | register int pos; | |
2531 | { | |
2532 | register struct window *w = XWINDOW (window); | |
2533 | register int height = window_internal_height (w); | |
2534 | register int vpos = XFASTINT (w->top); | |
2535 | register int last_text_vpos = vpos; | |
44fa5b1e | 2536 | FRAME_PTR f = XFRAME (w->frame); |
b1d1124b | 2537 | int width = window_internal_width (w) - 1; |
a2889657 JB |
2538 | struct position val; |
2539 | ||
9cbab4ff RS |
2540 | /* POS should never be out of range! */ |
2541 | if (pos < XBUFFER (w->buffer)->begv | |
2542 | || pos > XBUFFER (w->buffer)->zv) | |
2543 | abort (); | |
2544 | ||
12adba34 RS |
2545 | if (XMARKER (w->start)->charpos != pos) |
2546 | Fset_marker (w->start, make_number (pos), Qnil); | |
2547 | ||
a2889657 JB |
2548 | cursor_vpos = -1; |
2549 | overlay_arrow_seen = 0; | |
ca26e1c8 | 2550 | zv_strings_seen = 0; |
a2889657 | 2551 | val.hpos = XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0; |
0f9c0ff0 | 2552 | val.ovstring_chars_done = 0; |
12adba34 RS |
2553 | val.bytepos = marker_byte_position (w->start); |
2554 | val.tab_offset = pos_tab_offset (w, pos, val.bytepos); | |
a2889657 JB |
2555 | |
2556 | while (--height >= 0) | |
2557 | { | |
12adba34 RS |
2558 | val = *display_text_line (w, pos, val.bytepos, vpos, |
2559 | val.hpos, val.tab_offset, | |
0f9c0ff0 | 2560 | val.ovstring_chars_done); |
1c9241f5 KH |
2561 | /* The following code is omitted because we maintain tab_offset |
2562 | in VAL. */ | |
2563 | #if 0 | |
a2889657 JB |
2564 | tab_offset += width; |
2565 | if (val.vpos) tab_offset = 0; | |
1c9241f5 | 2566 | #endif /* 0 */ |
a2889657 JB |
2567 | vpos++; |
2568 | if (pos != val.bufpos) | |
642eefc6 RS |
2569 | { |
2570 | int invis = 0; | |
e885523c | 2571 | #ifdef USE_TEXT_PROPERTIES |
642eefc6 | 2572 | Lisp_Object invis_prop; |
975d21ea AS |
2573 | invis_prop = Fget_char_property (make_number (val.bufpos - 1), |
2574 | Qinvisible, window); | |
642eefc6 | 2575 | invis = TEXT_PROP_MEANS_INVISIBLE (invis_prop); |
e885523c | 2576 | #endif |
642eefc6 RS |
2577 | |
2578 | last_text_vpos | |
2579 | /* Next line, unless prev line ended in end of buffer with no cr */ | |
2580 | = vpos - (val.vpos | |
12adba34 | 2581 | && (FETCH_BYTE (val.bytepos - 1) != '\n' || invis)); |
642eefc6 | 2582 | } |
a2889657 JB |
2583 | pos = val.bufpos; |
2584 | } | |
2585 | ||
2586 | /* If last line is continued in middle of character, | |
44fa5b1e | 2587 | include the split character in the text considered on the frame */ |
a2889657 JB |
2588 | if (val.hpos < (XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0)) |
2589 | pos++; | |
2590 | ||
44fa5b1e | 2591 | /* If bottom just moved off end of frame, change mode line percentage. */ |
a2889657 JB |
2592 | if (XFASTINT (w->window_end_pos) == 0 |
2593 | && Z != pos) | |
2594 | w->update_mode_line = Qt; | |
2595 | ||
44fa5b1e | 2596 | /* Say where last char on frame will be, once redisplay is finished. */ |
c2213350 KH |
2597 | XSETFASTINT (w->window_end_pos, Z - pos); |
2598 | XSETFASTINT (w->window_end_vpos, last_text_vpos - XFASTINT (w->top)); | |
a2889657 JB |
2599 | /* But that is not valid info until redisplay finishes. */ |
2600 | w->window_end_valid = Qnil; | |
2601 | } | |
2602 | \f | |
2603 | /* Try to redisplay when buffer is modified locally, | |
2604 | computing insert/delete line to preserve text outside | |
2605 | the bounds of the changes. | |
2606 | Return 1 if successful, 0 if if cannot tell what to do, | |
2607 | or -1 to tell caller to find a new window start, | |
2608 | or -2 to tell caller to do normal redisplay with same window start. */ | |
2609 | ||
2610 | static int | |
2611 | try_window_id (window) | |
2612 | Lisp_Object window; | |
2613 | { | |
12adba34 RS |
2614 | int pos, pos_byte; |
2615 | int opoint, opoint_byte; | |
a2889657 JB |
2616 | register struct window *w = XWINDOW (window); |
2617 | register int height = window_internal_height (w); | |
44fa5b1e | 2618 | FRAME_PTR f = XFRAME (w->frame); |
a2889657 JB |
2619 | int top = XFASTINT (w->top); |
2620 | int start = marker_position (w->start); | |
b1d1124b | 2621 | int width = window_internal_width (w) - 1; |
a2889657 JB |
2622 | int hscroll = XINT (w->hscroll); |
2623 | int lmargin = hscroll > 0 ? 1 - hscroll : 0; | |
ca26e1c8 | 2624 | int did_motion; |
a2889657 JB |
2625 | register int vpos; |
2626 | register int i, tem; | |
2627 | int last_text_vpos = 0; | |
2628 | int stop_vpos; | |
e24c997d KH |
2629 | int selective = (INTEGERP (current_buffer->selective_display) |
2630 | ? XINT (current_buffer->selective_display) | |
2631 | : !NILP (current_buffer->selective_display) ? -1 : 0); | |
a2889657 JB |
2632 | struct position val, bp, ep, xp, pp; |
2633 | int scroll_amount = 0; | |
2634 | int delta; | |
1c9241f5 | 2635 | int epto, old_tick; |
a2889657 | 2636 | |
12adba34 RS |
2637 | int start_byte = marker_byte_position (w->start); |
2638 | ||
a2889657 JB |
2639 | if (GPT - BEG < beg_unchanged) |
2640 | beg_unchanged = GPT - BEG; | |
2641 | if (Z - GPT < end_unchanged) | |
2642 | end_unchanged = Z - GPT; | |
2643 | ||
6a1dc7ac | 2644 | if (beg_unchanged + BEG < start) |
a2889657 JB |
2645 | return 0; /* Give up if changes go above top of window */ |
2646 | ||
2647 | /* Find position before which nothing is changed. */ | |
ca26e1c8 | 2648 | bp = *compute_motion (start, 0, lmargin, 0, |
1c9241f5 KH |
2649 | min (ZV, beg_unchanged + BEG), height, |
2650 | /* BUG FIX: See the comment of | |
12adba34 | 2651 | Fpos_visible_in_window_p (window.c). */ |
1c9241f5 | 2652 | - (1 << (BITS_PER_SHORT - 1)), |
12adba34 RS |
2653 | width, hscroll, |
2654 | pos_tab_offset (w, start, start_byte), | |
2655 | w); | |
a2889657 | 2656 | if (bp.vpos >= height) |
6e8290aa | 2657 | { |
632ab665 | 2658 | if (PT < bp.bufpos) |
6e8290aa | 2659 | { |
67481ae5 RS |
2660 | /* All changes are beyond the window end, and point is on the screen. |
2661 | We don't need to change the text at all. | |
6e8290aa JB |
2662 | But we need to update window_end_pos to account for |
2663 | any change in buffer size. */ | |
ca26e1c8 | 2664 | bp = *compute_motion (start, 0, lmargin, 0, |
1c9241f5 KH |
2665 | ZV, height, |
2666 | /* BUG FIX: See the comment of | |
2667 | Fpos_visible_in_window_p() (window.c). */ | |
2668 | - (1 << (BITS_PER_SHORT - 1)), | |
12adba34 RS |
2669 | width, hscroll, |
2670 | pos_tab_offset (w, start, start_byte), w); | |
c2213350 KH |
2671 | XSETFASTINT (w->window_end_vpos, height); |
2672 | XSETFASTINT (w->window_end_pos, Z - bp.bufpos); | |
4d641a15 | 2673 | goto findpoint; |
6e8290aa JB |
2674 | } |
2675 | return 0; | |
2676 | } | |
a2889657 JB |
2677 | |
2678 | vpos = bp.vpos; | |
2679 | ||
44fa5b1e | 2680 | /* Find beginning of that frame line. Must display from there. */ |
210e752f | 2681 | bp = *vmotion (bp.bufpos, 0, w); |
a2889657 JB |
2682 | |
2683 | pos = bp.bufpos; | |
12adba34 | 2684 | pos_byte = bp.bytepos; |
a2889657 JB |
2685 | val.hpos = lmargin; |
2686 | if (pos < start) | |
2687 | return -1; | |
2688 | ||
ca26e1c8 | 2689 | did_motion = 0; |
a2889657 | 2690 | /* If about to start displaying at the beginning of a continuation line, |
44fa5b1e | 2691 | really start with previous frame line, in case it was not |
a2889657 | 2692 | continued when last redisplayed */ |
05ba02eb JB |
2693 | if ((bp.contin && bp.bufpos - 1 == beg_unchanged && vpos > 0) |
2694 | || | |
2695 | /* Likewise if we have to worry about selective display. */ | |
9f412332 | 2696 | (selective > 0 && bp.bufpos - 1 == beg_unchanged && vpos > 0)) |
a2889657 | 2697 | { |
210e752f | 2698 | bp = *vmotion (bp.bufpos, -1, w); |
a2889657 JB |
2699 | --vpos; |
2700 | pos = bp.bufpos; | |
12adba34 | 2701 | pos_byte = bp.bytepos; |
a2889657 | 2702 | } |
1c9241f5 | 2703 | val.tab_offset = bp.tab_offset; /* Update tab offset. */ |
a2889657 JB |
2704 | |
2705 | if (bp.contin && bp.hpos != lmargin) | |
2706 | { | |
2707 | val.hpos = bp.prevhpos - width + lmargin; | |
1c9241f5 | 2708 | val.tab_offset = bp.tab_offset + bp.prevhpos - width; |
ca26e1c8 | 2709 | did_motion = 1; |
93fdf93b | 2710 | DEC_BOTH (pos, pos_byte); |
a2889657 JB |
2711 | } |
2712 | ||
2713 | bp.vpos = vpos; | |
2714 | ||
2715 | /* Find first visible newline after which no more is changed. */ | |
12adba34 | 2716 | opoint = PT, opoint_byte = PT_BYTE; |
26a9b1f3 | 2717 | TEMP_SET_PT (Z - max (end_unchanged, Z - ZV)); |
12adba34 | 2718 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 1); |
9f412332 | 2719 | if (selective > 0) |
12adba34 RS |
2720 | while (PT < ZV - 1 && indented_beyond_p (PT, PT_BYTE, selective)) |
2721 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 1); | |
2722 | tem = PT; | |
26a9b1f3 | 2723 | TEMP_SET_PT_BOTH (opoint, opoint_byte); |
a2889657 JB |
2724 | |
2725 | /* Compute the cursor position after that newline. */ | |
ca26e1c8 | 2726 | ep = *compute_motion (pos, vpos, val.hpos, did_motion, tem, |
68be917d | 2727 | height, - (1 << (BITS_PER_SHORT - 1)), |
1c9241f5 KH |
2728 | width, hscroll, |
2729 | /* We have tab offset in VAL, use it. */ | |
2730 | val.tab_offset, w); | |
a2889657 | 2731 | |
44fa5b1e JB |
2732 | /* If changes reach past the text available on the frame, |
2733 | just display rest of frame. */ | |
a2889657 JB |
2734 | if (ep.bufpos > Z - XFASTINT (w->window_end_pos)) |
2735 | stop_vpos = height; | |
2736 | else | |
2737 | stop_vpos = ep.vpos; | |
2738 | ||
2739 | /* If no newline before ep, the line ep is on includes some changes | |
2740 | that must be displayed. Make sure we don't stop before it. */ | |
2741 | /* Also, if changes reach all the way until ep.bufpos, | |
2742 | it is possible that something was deleted after the | |
2743 | newline before it, so the following line must be redrawn. */ | |
2744 | if (stop_vpos == ep.vpos | |
2745 | && (ep.bufpos == BEGV | |
f1c87a7d | 2746 | || FETCH_BYTE (ep.bytepos - 1) != '\n' |
a2889657 JB |
2747 | || ep.bufpos == Z - end_unchanged)) |
2748 | stop_vpos = ep.vpos + 1; | |
2749 | ||
2750 | cursor_vpos = -1; | |
2751 | overlay_arrow_seen = 0; | |
ca26e1c8 | 2752 | zv_strings_seen = 0; |
a2889657 JB |
2753 | |
2754 | /* If changes do not reach to bottom of window, | |
2755 | figure out how much to scroll the rest of the window */ | |
2756 | if (stop_vpos < height) | |
2757 | { | |
2758 | /* Now determine how far up or down the rest of the window has moved */ | |
ca26e1c8 | 2759 | xp = *compute_motion (ep.bufpos, ep.vpos, ep.hpos, 1, |
a2889657 | 2760 | Z - XFASTINT (w->window_end_pos), |
1c9241f5 KH |
2761 | /* Don't care for VPOS... */ |
2762 | 1 << (BITS_PER_SHORT - 1), | |
2763 | /* ... nor HPOS. */ | |
2764 | 1 << (BITS_PER_SHORT - 1), | |
2765 | width, hscroll, ep.tab_offset, w); | |
a2889657 JB |
2766 | scroll_amount = xp.vpos - XFASTINT (w->window_end_vpos); |
2767 | ||
44fa5b1e | 2768 | /* Is everything on frame below the changes whitespace? |
a2889657 | 2769 | If so, no scrolling is really necessary. */ |
f1c87a7d | 2770 | for (i = ep.bytepos; i < xp.bytepos; i++) |
a2889657 | 2771 | { |
1c9241f5 | 2772 | tem = FETCH_BYTE (i); |
a2889657 JB |
2773 | if (tem != ' ' && tem != '\n' && tem != '\t') |
2774 | break; | |
2775 | } | |
f1c87a7d | 2776 | if (i == xp.bytepos) |
a2889657 JB |
2777 | return -2; |
2778 | ||
e8e536a9 KH |
2779 | XSETFASTINT (w->window_end_vpos, |
2780 | XFASTINT (w->window_end_vpos) + scroll_amount); | |
a2889657 | 2781 | |
44fa5b1e | 2782 | /* Before doing any scrolling, verify that point will be on frame. */ |
010a899e | 2783 | if (PT > ep.bufpos && !(PT <= xp.bufpos && xp.vpos < height)) |
a2889657 | 2784 | { |
ae3b1442 | 2785 | if (PT <= xp.bufpos) |
a2889657 | 2786 | { |
ca26e1c8 | 2787 | pp = *compute_motion (ep.bufpos, ep.vpos, ep.hpos, 1, |
68be917d | 2788 | PT, height, - (1 << (BITS_PER_SHORT - 1)), |
1c9241f5 KH |
2789 | width, hscroll, |
2790 | /* We have tab offset in EP, use it. */ | |
2791 | ep.tab_offset, w); | |
a2889657 JB |
2792 | } |
2793 | else | |
2794 | { | |
ca26e1c8 | 2795 | pp = *compute_motion (xp.bufpos, xp.vpos, xp.hpos, 1, |
68be917d | 2796 | PT, height, - (1 << (BITS_PER_SHORT - 1)), |
e37f06d7 | 2797 | width, hscroll, |
1c9241f5 KH |
2798 | /* We have tab offset in XP, use it. */ |
2799 | xp.tab_offset, w); | |
a2889657 | 2800 | } |
ae3b1442 | 2801 | if (pp.bufpos < PT || pp.vpos == height) |
a2889657 JB |
2802 | return 0; |
2803 | cursor_vpos = pp.vpos + top; | |
73f194f1 | 2804 | cursor_hpos = WINDOW_LEFT_MARGIN (w) + minmax (0, pp.hpos, width); |
a2889657 JB |
2805 | } |
2806 | ||
2807 | if (stop_vpos - scroll_amount >= height | |
2808 | || ep.bufpos == xp.bufpos) | |
2809 | { | |
2810 | if (scroll_amount < 0) | |
2811 | stop_vpos -= scroll_amount; | |
2812 | scroll_amount = 0; | |
2813 | /* In this path, we have altered window_end_vpos | |
2814 | and not left it negative. | |
2815 | We must make sure that, in case display is preempted | |
44fa5b1e | 2816 | before the frame changes to reflect what we do here, |
a2889657 | 2817 | further updates will not come to try_window_id |
44fa5b1e | 2818 | and assume the frame and window_end_vpos match. */ |
a2889657 JB |
2819 | blank_end_of_window = 1; |
2820 | } | |
2821 | else if (!scroll_amount) | |
0d231165 RS |
2822 | { |
2823 | /* Even if we don't need to scroll, we must adjust the | |
2824 | charstarts of subsequent lines (that we won't redisplay) | |
2825 | according to the amount of text inserted or deleted. */ | |
2826 | int oldpos = FRAME_CURRENT_GLYPHS (f)->charstarts[ep.vpos + top][0]; | |
2827 | int adjust = ep.bufpos - oldpos; | |
2828 | adjust_window_charstarts (w, ep.vpos + top - 1, adjust); | |
2829 | } | |
a2889657 JB |
2830 | else if (bp.bufpos == Z - end_unchanged) |
2831 | { | |
2832 | /* If reprinting everything is nearly as fast as scrolling, | |
2833 | don't bother scrolling. Can happen if lines are short. */ | |
44fa5b1e | 2834 | if (scroll_cost (f, bp.vpos + top - scroll_amount, |
a2889657 JB |
2835 | top + height - max (0, scroll_amount), |
2836 | scroll_amount) | |
2837 | > xp.bufpos - bp.bufpos - 20) | |
2838 | /* Return "try normal display with same window-start." | |
2839 | Too bad we can't prevent further scroll-thinking. */ | |
2840 | return -2; | |
2841 | /* If pure deletion, scroll up as many lines as possible. | |
2842 | In common case of killing a line, this can save the | |
2843 | following line from being overwritten by scrolling | |
2844 | and therefore having to be redrawn. */ | |
44fa5b1e | 2845 | tem = scroll_frame_lines (f, bp.vpos + top - scroll_amount, |
d1cb44a4 RS |
2846 | top + height - max (0, scroll_amount), |
2847 | scroll_amount, bp.bufpos); | |
d2f84654 RS |
2848 | if (!tem) |
2849 | stop_vpos = height; | |
2850 | else | |
2851 | { | |
2852 | /* scroll_frame_lines did not properly adjust subsequent | |
2853 | lines' charstarts in the case where the text of the | |
2854 | screen line at bp.vpos has changed. | |
2855 | (This can happen in a deletion that ends in mid-line.) | |
8e6208c5 KH |
2856 | To adjust properly, we need to make things consistent |
2857 | at the position ep. | |
d2f84654 RS |
2858 | So do a second adjust to make that happen. |
2859 | Note that stop_vpos >= ep.vpos, so it is sufficient | |
2860 | to update the charstarts for lines at ep.vpos and below. */ | |
2861 | int oldstart | |
2862 | = FRAME_CURRENT_GLYPHS (f)->charstarts[ep.vpos + top][0]; | |
2863 | adjust_window_charstarts (w, ep.vpos + top - 1, | |
2864 | ep.bufpos - oldstart); | |
2865 | } | |
a2889657 JB |
2866 | } |
2867 | else if (scroll_amount) | |
2868 | { | |
2869 | /* If reprinting everything is nearly as fast as scrolling, | |
2870 | don't bother scrolling. Can happen if lines are short. */ | |
2871 | /* Note that if scroll_amount > 0, xp.bufpos - bp.bufpos is an | |
2872 | overestimate of cost of reprinting, since xp.bufpos | |
2873 | would end up below the bottom of the window. */ | |
44fa5b1e | 2874 | if (scroll_cost (f, ep.vpos + top - scroll_amount, |
a2889657 JB |
2875 | top + height - max (0, scroll_amount), |
2876 | scroll_amount) | |
2877 | > xp.bufpos - ep.bufpos - 20) | |
2878 | /* Return "try normal display with same window-start." | |
2879 | Too bad we can't prevent further scroll-thinking. */ | |
2880 | return -2; | |
44fa5b1e | 2881 | tem = scroll_frame_lines (f, ep.vpos + top - scroll_amount, |
a2889657 | 2882 | top + height - max (0, scroll_amount), |
d1cb44a4 | 2883 | scroll_amount, ep.bufpos); |
a2889657 JB |
2884 | if (!tem) stop_vpos = height; |
2885 | } | |
2886 | } | |
2887 | ||
2888 | /* In any case, do not display past bottom of window */ | |
2889 | if (stop_vpos >= height) | |
2890 | { | |
2891 | stop_vpos = height; | |
2892 | scroll_amount = 0; | |
2893 | } | |
2894 | ||
2895 | /* Handle case where pos is before w->start -- | |
2896 | can happen if part of line had been clipped and is not clipped now */ | |
2897 | if (vpos == 0 && pos < marker_position (w->start)) | |
2898 | Fset_marker (w->start, make_number (pos), Qnil); | |
2899 | ||
12adba34 RS |
2900 | val.bytepos = pos_byte; |
2901 | ||
a2889657 JB |
2902 | /* Redisplay the lines where the text was changed */ |
2903 | last_text_vpos = vpos; | |
1c9241f5 KH |
2904 | /* The following code is omitted because we maintain tab offset in |
2905 | val.tab_offset. */ | |
2906 | #if 0 | |
12adba34 | 2907 | tab_offset = pos_tab_offset (w, pos, pos_byte); |
a2889657 JB |
2908 | /* If we are starting display in mid-character, correct tab_offset |
2909 | to account for passing the line that that character really starts in. */ | |
2910 | if (val.hpos < lmargin) | |
2911 | tab_offset += width; | |
1c9241f5 | 2912 | #endif /* 0 */ |
d3413a53 | 2913 | old_tick = MODIFF; |
a2889657 JB |
2914 | while (vpos < stop_vpos) |
2915 | { | |
12adba34 RS |
2916 | val = *display_text_line (w, pos, val.bytepos, top + vpos++, |
2917 | val.hpos, val.tab_offset, | |
0f9c0ff0 | 2918 | val.ovstring_chars_done); |
d3413a53 RS |
2919 | /* If display_text_line ran a hook and changed some text, |
2920 | redisplay all the way to bottom of buffer | |
2921 | So that we show the changes. */ | |
2922 | if (old_tick != MODIFF) | |
2923 | stop_vpos = height; | |
1c9241f5 KH |
2924 | /* The following code is omitted because we maintain tab offset |
2925 | in val.tab_offset. */ | |
2926 | #if 0 | |
a2889657 JB |
2927 | tab_offset += width; |
2928 | if (val.vpos) tab_offset = 0; | |
1c9241f5 | 2929 | #endif |
a2889657 JB |
2930 | if (pos != val.bufpos) |
2931 | last_text_vpos | |
2932 | /* Next line, unless prev line ended in end of buffer with no cr */ | |
f1c87a7d | 2933 | = vpos - (val.vpos && FETCH_BYTE (val.bytepos - 1) != '\n'); |
a2889657 JB |
2934 | pos = val.bufpos; |
2935 | } | |
2936 | ||
2937 | /* There are two cases: | |
2938 | 1) we have displayed down to the bottom of the window | |
2939 | 2) we have scrolled lines below stop_vpos by scroll_amount */ | |
2940 | ||
2941 | if (vpos == height) | |
2942 | { | |
2943 | /* If last line is continued in middle of character, | |
44fa5b1e | 2944 | include the split character in the text considered on the frame */ |
a2889657 JB |
2945 | if (val.hpos < lmargin) |
2946 | val.bufpos++; | |
c2213350 KH |
2947 | XSETFASTINT (w->window_end_vpos, last_text_vpos); |
2948 | XSETFASTINT (w->window_end_pos, Z - val.bufpos); | |
a2889657 JB |
2949 | } |
2950 | ||
2951 | /* If scrolling made blank lines at window bottom, | |
2952 | redisplay to fill those lines */ | |
2953 | if (scroll_amount < 0) | |
2954 | { | |
2955 | /* Don't consider these lines for general-purpose scrolling. | |
2956 | That will save time in the scrolling computation. */ | |
44fa5b1e | 2957 | FRAME_SCROLL_BOTTOM_VPOS (f) = xp.vpos; |
a2889657 JB |
2958 | vpos = xp.vpos; |
2959 | pos = xp.bufpos; | |
12adba34 | 2960 | pos_byte = xp.bytepos; |
1c9241f5 KH |
2961 | val.hpos = xp.hpos; |
2962 | val.tab_offset = xp.tab_offset; | |
a2889657 | 2963 | if (pos == ZV) |
010a899e KH |
2964 | { /* Display from next line */ |
2965 | vpos = height + scroll_amount; | |
2966 | val.hpos = lmargin; | |
2967 | val.tab_offset = 0; | |
2968 | } | |
a2889657 JB |
2969 | else if (xp.contin && xp.hpos != lmargin) |
2970 | { | |
2971 | val.hpos = xp.prevhpos - width + lmargin; | |
1c9241f5 | 2972 | val.tab_offset = xp.tab_offset + bp.prevhpos - width; |
93fdf93b | 2973 | DEC_BOTH (pos, pos_byte); |
a2889657 JB |
2974 | } |
2975 | ||
2976 | blank_end_of_window = 1; | |
1c9241f5 KH |
2977 | /* The following code is omitted because we maintain tab offset |
2978 | in val.tab_offset. */ | |
2979 | #if 0 | |
12adba34 | 2980 | tab_offset = pos_tab_offset (w, pos, pos_byte); |
a2889657 JB |
2981 | /* If we are starting display in mid-character, correct tab_offset |
2982 | to account for passing the line that that character starts in. */ | |
2983 | if (val.hpos < lmargin) | |
2984 | tab_offset += width; | |
1c9241f5 | 2985 | #endif |
f1c87a7d | 2986 | val.bytepos = pos_byte; |
a2889657 JB |
2987 | while (vpos < height) |
2988 | { | |
12adba34 RS |
2989 | val = *display_text_line (w, pos, val.bytepos, |
2990 | top + vpos++, val.hpos, | |
1c9241f5 KH |
2991 | val.tab_offset, val.ovstring_chars_done); |
2992 | /* The following code is omitted because we maintain tab | |
2993 | offset in val.tab_offset. */ | |
2994 | #if 0 | |
a2889657 JB |
2995 | tab_offset += width; |
2996 | if (val.vpos) tab_offset = 0; | |
1c9241f5 | 2997 | #endif /* 0 */ |
a2889657 JB |
2998 | pos = val.bufpos; |
2999 | } | |
3000 | ||
3001 | /* Here is a case where display_text_line sets cursor_vpos wrong. | |
3002 | Make it be fixed up, below. */ | |
3003 | if (xp.bufpos == ZV | |
ae3b1442 | 3004 | && xp.bufpos == PT) |
a2889657 JB |
3005 | cursor_vpos = -1; |
3006 | } | |
3007 | ||
44fa5b1e | 3008 | /* If bottom just moved off end of frame, change mode line percentage. */ |
a2889657 JB |
3009 | if (XFASTINT (w->window_end_pos) == 0 |
3010 | && Z != val.bufpos) | |
3011 | w->update_mode_line = Qt; | |
3012 | ||
3013 | /* Attempt to adjust end-of-text positions to new bottom line */ | |
3014 | if (scroll_amount) | |
3015 | { | |
3016 | delta = height - xp.vpos; | |
3017 | if (delta < 0 | |
3018 | || (delta > 0 && xp.bufpos <= ZV) | |
3019 | || (delta == 0 && xp.hpos)) | |
3020 | { | |
210e752f | 3021 | val = *vmotion (Z - XFASTINT (w->window_end_pos), delta, w); |
c2213350 | 3022 | XSETFASTINT (w->window_end_pos, Z - val.bufpos); |
e8e536a9 KH |
3023 | XSETFASTINT (w->window_end_vpos, |
3024 | XFASTINT (w->window_end_vpos) + val.vpos); | |
a2889657 JB |
3025 | } |
3026 | } | |
3027 | ||
3028 | w->window_end_valid = Qnil; | |
3029 | ||
3030 | /* If point was not in a line that was displayed, find it */ | |
3031 | if (cursor_vpos < 0) | |
3032 | { | |
4d641a15 | 3033 | findpoint: |
1c9241f5 KH |
3034 | val = *compute_motion (start, 0, lmargin, 0, PT, |
3035 | /* Don't care for VPOS... */ | |
3036 | 1 << (BITS_PER_SHORT - 1), | |
3037 | /* ... nor HPOS. */ | |
3038 | 1 << (BITS_PER_SHORT - 1), | |
12adba34 RS |
3039 | width, hscroll, |
3040 | pos_tab_offset (w, start, start_byte), | |
3041 | w); | |
44fa5b1e | 3042 | /* Admit failure if point is off frame now */ |
a2889657 JB |
3043 | if (val.vpos >= height) |
3044 | { | |
3045 | for (vpos = 0; vpos < height; vpos++) | |
44fa5b1e | 3046 | cancel_line (vpos + top, f); |
a2889657 JB |
3047 | return 0; |
3048 | } | |
3049 | cursor_vpos = val.vpos + top; | |
73f194f1 | 3050 | cursor_hpos = WINDOW_LEFT_MARGIN (w) + minmax (0, val.hpos, width); |
a2889657 JB |
3051 | } |
3052 | ||
210e752f | 3053 | FRAME_CURSOR_X (f) = cursor_hpos; |
44fa5b1e | 3054 | FRAME_CURSOR_Y (f) = cursor_vpos; |
a2889657 JB |
3055 | |
3056 | if (debug_end_pos) | |
3057 | { | |
ca26e1c8 | 3058 | val = *compute_motion (start, 0, lmargin, 0, ZV, |
68be917d | 3059 | height, - (1 << (BITS_PER_SHORT - 1)), |
12adba34 RS |
3060 | width, hscroll, |
3061 | pos_tab_offset (w, start, start_byte), | |
3062 | w); | |
a2889657 JB |
3063 | if (val.vpos != XFASTINT (w->window_end_vpos)) |
3064 | abort (); | |
3065 | if (XFASTINT (w->window_end_pos) | |
3066 | != Z - val.bufpos) | |
3067 | abort (); | |
3068 | } | |
3069 | ||
3070 | return 1; | |
3071 | } | |
3072 | \f | |
278feba9 | 3073 | /* Copy LEN glyphs starting address FROM to the rope TO. |
f7430cb6 | 3074 | But don't actually copy the parts that would come in before S. |
278feba9 RS |
3075 | Value is TO, advanced past the copied data. |
3076 | F is the frame we are displaying in. */ | |
a2889657 | 3077 | |
278feba9 RS |
3078 | static GLYPH * |
3079 | copy_part_of_rope (f, to, s, from, len, face) | |
3080 | FRAME_PTR f; | |
3081 | register GLYPH *to; /* Copy to here. */ | |
a2889657 | 3082 | register GLYPH *s; /* Starting point. */ |
278feba9 RS |
3083 | Lisp_Object *from; /* Data to copy. */ |
3084 | int len; | |
1c2250c2 | 3085 | int face; /* Face to apply to glyphs which don't specify one. */ |
a2889657 | 3086 | { |
278feba9 RS |
3087 | int n = len; |
3088 | register Lisp_Object *fp = from; | |
3089 | /* These cache the results of the last call to compute_glyph_face. */ | |
3090 | int last_code = -1; | |
3091 | int last_merged = 0; | |
c581d710 | 3092 | |
87485d6f | 3093 | #ifdef HAVE_FACES |
4cdc65eb KH |
3094 | if (! FRAME_TERMCAP_P (f)) |
3095 | while (n--) | |
3096 | { | |
e57bca5d | 3097 | GLYPH glyph = (INTEGERP (*fp) ? XFASTINT (*fp) : 0); |
4cdc65eb | 3098 | int facecode; |
e57bca5d KH |
3099 | unsigned int c = FAST_GLYPH_CHAR (glyph); |
3100 | ||
3101 | if (c > MAX_CHAR) | |
3102 | /* For an invalid character code, use space. */ | |
3103 | c = ' '; | |
4cdc65eb KH |
3104 | |
3105 | if (FAST_GLYPH_FACE (glyph) == 0) | |
3106 | /* If GLYPH has no face code, use FACE. */ | |
3107 | facecode = face; | |
3108 | else if (FAST_GLYPH_FACE (glyph) == last_code) | |
3109 | /* If it's same as previous glyph, use same result. */ | |
3110 | facecode = last_merged; | |
3111 | else | |
3112 | { | |
3113 | /* Merge this glyph's face and remember the result. */ | |
3114 | last_code = FAST_GLYPH_FACE (glyph); | |
3115 | last_merged = facecode = compute_glyph_face (f, last_code, face); | |
3116 | } | |
b2a76982 | 3117 | |
4cdc65eb | 3118 | if (to >= s) |
e57bca5d | 3119 | *to = FAST_MAKE_GLYPH (c, facecode); |
4cdc65eb KH |
3120 | ++to; |
3121 | ++fp; | |
3122 | } | |
3123 | else | |
3124 | #endif | |
3125 | while (n--) | |
3126 | { | |
dedd1182 | 3127 | if (to >= s) *to = (INTEGERP (*fp) ? XFASTINT (*fp) : 0); |
4cdc65eb KH |
3128 | ++to; |
3129 | ++fp; | |
3130 | } | |
278feba9 | 3131 | return to; |
c581d710 RS |
3132 | } |
3133 | ||
278feba9 RS |
3134 | /* Correct a glyph by replacing its specified user-level face code |
3135 | with a displayable computed face code. */ | |
c581d710 | 3136 | |
278feba9 | 3137 | static GLYPH |
659a218f | 3138 | fix_glyph (f, glyph, cface) |
278feba9 RS |
3139 | FRAME_PTR f; |
3140 | GLYPH glyph; | |
659a218f | 3141 | int cface; |
c581d710 | 3142 | { |
87485d6f | 3143 | #ifdef HAVE_FACES |
659a218f KH |
3144 | if (! FRAME_TERMCAP_P (f)) |
3145 | { | |
3146 | if (FAST_GLYPH_FACE (glyph) != 0) | |
3147 | cface = compute_glyph_face (f, FAST_GLYPH_FACE (glyph), cface); | |
3148 | glyph = FAST_MAKE_GLYPH (FAST_GLYPH_CHAR (glyph), cface); | |
3149 | } | |
4cdc65eb KH |
3150 | #endif |
3151 | return glyph; | |
a2889657 JB |
3152 | } |
3153 | \f | |
12adba34 | 3154 | /* Return the column of position POS / POS_BYTE in window W's buffer. |
4a4c24d0 RS |
3155 | When used on the character at the beginning of a line, |
3156 | starting at column 0, this says how much to subtract from | |
3157 | the column position of any character in the line | |
3158 | to get its horizontal position on the screen. */ | |
12adba34 RS |
3159 | |
3160 | static int | |
3161 | pos_tab_offset (w, pos, pos_byte) | |
3162 | struct window *w; | |
3163 | register int pos, pos_byte; | |
3164 | { | |
3165 | int opoint = PT; | |
3166 | int opoint_byte = PT_BYTE; | |
3167 | int col; | |
3168 | int width = window_internal_width (w) - 1; | |
3169 | ||
3170 | if (pos == BEGV) | |
3171 | return MINI_WINDOW_P (w) ? -minibuf_prompt_width : 0; | |
3172 | ||
3173 | if (FETCH_BYTE (pos_byte - 1) == '\n') | |
3174 | return 0; | |
3175 | ||
3176 | TEMP_SET_PT_BOTH (pos, pos_byte); | |
3177 | col = current_column (); | |
3178 | TEMP_SET_PT_BOTH (opoint, opoint_byte); | |
3179 | ||
3180 | return col; | |
3181 | } | |
81d2de9b | 3182 | \f |
12adba34 RS |
3183 | /* Display one line of window W, starting at char position START in W's buffer. |
3184 | START_BYTE is the corresponding byte position. | |
f4faa47c JB |
3185 | |
3186 | Display starting at horizontal position HPOS, expressed relative to | |
3187 | W's left edge. In situations where the text at START shouldn't | |
3188 | start at the left margin (i.e. when the window is hscrolled, or | |
3189 | we're continuing a line which left off in the midst of a | |
3190 | multi-column character), HPOS should be negative; we throw away | |
3191 | characters up 'til hpos = 0. So, HPOS must take hscrolling into | |
3192 | account. | |
a2889657 JB |
3193 | |
3194 | TABOFFSET is an offset for ostensible hpos, used in tab stop calculations. | |
3195 | ||
0f9c0ff0 RS |
3196 | OVSTR_DONE is the number of chars of overlay before/after strings |
3197 | at this position which have already been processed. | |
3198 | ||
f4faa47c JB |
3199 | Display on position VPOS on the frame. It is origin 0, relative to |
3200 | the top of the frame, not W. | |
a2889657 JB |
3201 | |
3202 | Returns a STRUCT POSITION giving character to start next line with | |
3203 | and where to display it, including a zero or negative hpos. | |
3204 | The vpos field is not really a vpos; it is 1 unless the line is continued */ | |
3205 | ||
3206 | struct position val_display_text_line; | |
3207 | ||
3208 | static struct position * | |
12adba34 | 3209 | display_text_line (w, start, start_byte, vpos, hpos, taboffset, ovstr_done) |
a2889657 JB |
3210 | struct window *w; |
3211 | int start; | |
3212 | int vpos; | |
3213 | int hpos; | |
3214 | int taboffset; | |
0f9c0ff0 | 3215 | int ovstr_done; |
a2889657 JB |
3216 | { |
3217 | register int pos = start; | |
12adba34 | 3218 | int pos_byte = start_byte; |
a2889657 JB |
3219 | register int c; |
3220 | register GLYPH *p1; | |
12adba34 | 3221 | int pause, limit_byte; |
a2889657 JB |
3222 | register unsigned char *p; |
3223 | GLYPH *endp; | |
d2f84654 | 3224 | register GLYPH *leftmargin; |
ca26e1c8 | 3225 | register GLYPH *p1prev; |
efc63ef0 | 3226 | register GLYPH *p1start; |
0d09d1e6 | 3227 | GLYPH *p1_wide_column_end = (GLYPH *) 0; |
12adba34 | 3228 | int prevpos, prevpos_byte; |
efc63ef0 | 3229 | int *charstart; |
44fa5b1e | 3230 | FRAME_PTR f = XFRAME (w->frame); |
a2889657 | 3231 | int tab_width = XINT (current_buffer->tab_width); |
265a9e55 | 3232 | int ctl_arrow = !NILP (current_buffer->ctl_arrow); |
b1d1124b | 3233 | int width = window_internal_width (w) - 1; |
a2889657 | 3234 | struct position val; |
12adba34 | 3235 | int lastpos, lastpos_byte; |
a2889657 | 3236 | int invis; |
642eefc6 RS |
3237 | int last_invis_skip = 0; |
3238 | Lisp_Object last_invis_prop; | |
a2889657 | 3239 | int hscroll = XINT (w->hscroll); |
d2f84654 RS |
3240 | int truncate = (hscroll |
3241 | || (truncate_partial_width_windows | |
73f194f1 | 3242 | && !WINDOW_FULL_WIDTH_P (w)) |
d2f84654 | 3243 | || !NILP (current_buffer->truncate_lines)); |
bd66d1ba | 3244 | |
409bb864 | 3245 | /* 1 if this buffer has a region to highlight. */ |
bd66d1ba | 3246 | int highlight_region |
2bf32c5d | 3247 | = (!NILP (Vtransient_mark_mode) && !NILP (current_buffer->mark_active) |
409bb864 | 3248 | && XMARKER (current_buffer->mark)->buffer != 0); |
bd66d1ba RS |
3249 | int region_beg, region_end; |
3250 | ||
e24c997d KH |
3251 | int selective = (INTEGERP (current_buffer->selective_display) |
3252 | ? XINT (current_buffer->selective_display) | |
3253 | : !NILP (current_buffer->selective_display) ? -1 : 0); | |
44fa5b1e | 3254 | register struct frame_glyphs *desired_glyphs = FRAME_DESIRED_GLYPHS (f); |
f908610f | 3255 | register struct Lisp_Char_Table *dp = window_display_table (w); |
68a37fa8 RS |
3256 | |
3257 | Lisp_Object default_invis_vector[3]; | |
642eefc6 RS |
3258 | /* Number of characters of ellipsis to display after an invisible line |
3259 | if it calls for an ellipsis. | |
3260 | Note that this value can be nonzero regardless of whether | |
3261 | selective display is enabled--you must check that separately. */ | |
a2889657 | 3262 | int selective_rlen |
642eefc6 | 3263 | = (dp && VECTORP (DISP_INVIS_VECTOR (dp)) |
68a37fa8 | 3264 | ? XVECTOR (DISP_INVIS_VECTOR (dp))->size |
642eefc6 | 3265 | : !NILP (current_buffer->selective_display_ellipses) ? 3 : 0); |
68a37fa8 RS |
3266 | /* This is the sequence of Lisp objects to display |
3267 | when there are invisible lines. */ | |
3268 | Lisp_Object *invis_vector_contents | |
e24c997d | 3269 | = (dp && VECTORP (DISP_INVIS_VECTOR (dp)) |
68a37fa8 RS |
3270 | ? XVECTOR (DISP_INVIS_VECTOR (dp))->contents |
3271 | : default_invis_vector); | |
3272 | ||
e24c997d | 3273 | GLYPH truncator = (dp == 0 || !INTEGERP (DISP_TRUNC_GLYPH (dp)) |
e57bca5d | 3274 | || !GLYPH_CHAR_VALID_P (XINT (DISP_TRUNC_GLYPH (dp))) |
278feba9 | 3275 | ? '$' : XINT (DISP_TRUNC_GLYPH (dp))); |
e24c997d | 3276 | GLYPH continuer = (dp == 0 || !INTEGERP (DISP_CONTINUE_GLYPH (dp)) |
e57bca5d | 3277 | || !GLYPH_CHAR_VALID_P (XINT (DISP_CONTINUE_GLYPH (dp))) |
278feba9 | 3278 | ? '\\' : XINT (DISP_CONTINUE_GLYPH (dp))); |
a2889657 | 3279 | |
1c9241f5 KH |
3280 | /* If 1, we must handle multibyte characters. */ |
3281 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); | |
3282 | /* Length of multibyte form of each character. */ | |
3283 | int len; | |
3284 | /* Glyphs generated should be set this bit mask if text must be | |
3285 | displayed from right to left. */ | |
3286 | GLYPH rev_dir_bit = (NILP (current_buffer->direction_reversed) | |
3287 | ? 0 : GLYPH_MASK_REV_DIR); | |
3288 | ||
31b24551 JB |
3289 | /* The next buffer location at which the face should change, due |
3290 | to overlays or text property changes. */ | |
3291 | int next_face_change; | |
3292 | ||
ca26e1c8 KH |
3293 | /* The next location where the `invisible' property changes, or an |
3294 | overlay starts or ends. */ | |
3295 | int next_boundary; | |
3296 | ||
31b24551 | 3297 | /* The face we're currently using. */ |
1c2250c2 | 3298 | int current_face = 0; |
efc63ef0 | 3299 | int i; |
31b24551 | 3300 | |
c2213350 | 3301 | XSETFASTINT (default_invis_vector[2], '.'); |
68a37fa8 RS |
3302 | default_invis_vector[0] = default_invis_vector[1] = default_invis_vector[2]; |
3303 | ||
73f194f1 | 3304 | get_display_line (f, vpos, WINDOW_LEFT_MARGIN (w)); |
54ff581a | 3305 | if (tab_width <= 0 || tab_width > 1000) tab_width = 8; |
a2889657 | 3306 | |
bd66d1ba | 3307 | /* Show where to highlight the region. */ |
409bb864 | 3308 | if (highlight_region |
fba9ce76 RS |
3309 | /* Maybe highlight only in selected window. */ |
3310 | && (highlight_nonselected_windows | |
409bb864 KH |
3311 | || w == XWINDOW (selected_window) |
3312 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
3313 | && w == XWINDOW (Vminibuf_scroll_window)))) | |
bd66d1ba RS |
3314 | { |
3315 | region_beg = marker_position (current_buffer->mark); | |
3316 | if (PT < region_beg) | |
3317 | { | |
3318 | region_end = region_beg; | |
3319 | region_beg = PT; | |
3320 | } | |
3321 | else | |
3322 | region_end = PT; | |
3323 | w->region_showing = Qt; | |
3324 | } | |
3325 | else | |
3ee4159a RS |
3326 | { |
3327 | region_beg = region_end = -1; | |
3328 | w->region_showing = Qnil; | |
3329 | } | |
bd66d1ba | 3330 | |
f4faa47c | 3331 | if (MINI_WINDOW_P (w) |
ca26e1c8 | 3332 | && start == BEG |
a2889657 JB |
3333 | && vpos == XFASTINT (w->top)) |
3334 | { | |
8c5b6a0a | 3335 | if (! NILP (minibuf_prompt)) |
f7b4b63a | 3336 | { |
12a274bf RS |
3337 | int old_width = minibuf_prompt_width; |
3338 | ||
f7b4b63a | 3339 | minibuf_prompt_width |
8c5b6a0a | 3340 | = (display_string (w, vpos, XSTRING (minibuf_prompt)->data, |
fc932ac6 | 3341 | STRING_BYTES (XSTRING (minibuf_prompt)), |
377dbd97 | 3342 | hpos + WINDOW_LEFT_MARGIN (w), |
ce006f69 RS |
3343 | /* Display a space if we truncate. */ |
3344 | ' ', | |
3345 | 1, -1, | |
3346 | /* Truncate the prompt a little before the | |
3347 | margin, so user input can at least start | |
3348 | on the first line. */ | |
8bb6ca14 | 3349 | (XFASTINT (w->width) > 10 |
a3788d53 | 3350 | ? XFASTINT (w->width) - 4 : -1), |
0a9dc68b | 3351 | STRING_MULTIBYTE (minibuf_prompt)) |
377dbd97 | 3352 | - hpos - WINDOW_LEFT_MARGIN (w)); |
f7b4b63a | 3353 | hpos += minibuf_prompt_width; |
12a274bf | 3354 | taboffset -= minibuf_prompt_width - old_width; |
f7b4b63a KH |
3355 | } |
3356 | else | |
3357 | minibuf_prompt_width = 0; | |
a2889657 JB |
3358 | } |
3359 | ||
f4faa47c JB |
3360 | /* If we're hscrolled at all, use compute_motion to skip over any |
3361 | text off the left edge of the window. compute_motion may know | |
3362 | tricks to do this faster than we can. */ | |
3363 | if (hpos < 0) | |
3364 | { | |
3365 | struct position *left_edge | |
ca26e1c8 KH |
3366 | = compute_motion (pos, vpos, hpos, 0, |
3367 | ZV, vpos, 0, | |
f4faa47c JB |
3368 | width, hscroll, taboffset, w); |
3369 | ||
3370 | /* Retrieve the buffer position and column provided by | |
3371 | compute_motion. We can't assume that the column will be | |
3372 | zero, because you may have multi-column characters crossing | |
3373 | the left margin. | |
3374 | ||
3375 | compute_motion may have moved us past the screen position we | |
3376 | requested, if we hit a multi-column character, or the end of | |
3377 | the line. If so, back up. */ | |
ffa286a2 RS |
3378 | if ((left_edge->vpos > vpos |
3379 | || left_edge->hpos > 0) | |
3380 | && left_edge->bufpos > pos) | |
f4faa47c | 3381 | { |
93fdf93b | 3382 | pos = left_edge->bufpos; |
0d09d1e6 | 3383 | pos_byte = left_edge->bytepos; |
93fdf93b | 3384 | DEC_BOTH (pos, pos_byte); |
f4faa47c JB |
3385 | hpos = left_edge->prevhpos; |
3386 | } | |
3387 | else | |
3388 | { | |
3389 | pos = left_edge->bufpos; | |
12adba34 | 3390 | pos_byte = left_edge->bytepos; |
f4faa47c JB |
3391 | hpos = left_edge->hpos; |
3392 | } | |
3393 | } | |
3394 | ||
377dbd97 RS |
3395 | hpos += WINDOW_LEFT_MARGIN (w); |
3396 | ||
f4faa47c | 3397 | desired_glyphs->bufp[vpos] = start; |
a2889657 | 3398 | p1 = desired_glyphs->glyphs[vpos] + hpos; |
efc63ef0 RS |
3399 | p1start = p1; |
3400 | charstart = desired_glyphs->charstarts[vpos] + hpos; | |
3401 | /* In case we don't ever write anything into it... */ | |
73f194f1 RS |
3402 | desired_glyphs->charstarts[vpos][WINDOW_LEFT_MARGIN (w)] = -1; |
3403 | leftmargin = desired_glyphs->glyphs[vpos] + WINDOW_LEFT_MARGIN (w); | |
d2f84654 | 3404 | endp = leftmargin + width; |
a2889657 | 3405 | |
1c2250c2 JB |
3406 | /* Arrange the overlays nicely for our purposes. Usually, we call |
3407 | display_text_line on only one line at a time, in which case this | |
3408 | can't really hurt too much, or we call it on lines which appear | |
3409 | one after another in the buffer, in which case all calls to | |
3410 | recenter_overlay_lists but the first will be pretty cheap. */ | |
3411 | recenter_overlay_lists (current_buffer, pos); | |
3412 | ||
a2889657 JB |
3413 | /* Loop generating characters. |
3414 | Stop at end of buffer, before newline, | |
31b24551 JB |
3415 | if reach or pass continuation column, |
3416 | or at face change. */ | |
a2889657 | 3417 | pause = pos; |
12adba34 | 3418 | limit_byte = pos_byte; |
31b24551 | 3419 | next_face_change = pos; |
ca26e1c8 KH |
3420 | next_boundary = pos; |
3421 | p1prev = p1; | |
3422 | prevpos = pos; | |
12adba34 | 3423 | prevpos_byte = pos_byte; |
1fca3fae RS |
3424 | |
3425 | /* If the window is hscrolled and point is in the invisible part of the | |
3426 | current line beyond the left margin we can record the cursor location | |
3427 | right away. */ | |
3428 | if (hscroll && start <= PT && PT < pos && cursor_vpos < 0) | |
3429 | { | |
3430 | cursor_vpos = vpos; | |
3431 | cursor_hpos = p1 - leftmargin; | |
3432 | } | |
3433 | ||
2384c010 | 3434 | while (p1 < endp) |
a2889657 | 3435 | { |
31b24551 | 3436 | if (pos >= pause) |
a2889657 | 3437 | { |
67481ae5 RS |
3438 | int e_t_h; |
3439 | ||
ca26e1c8 | 3440 | while (pos == next_boundary) |
a2889657 | 3441 | { |
ca26e1c8 KH |
3442 | Lisp_Object position, limit, prop, ww; |
3443 | ||
3444 | /* Display the overlay strings here, unless we're at ZV | |
3445 | and have already displayed the appropriate strings | |
3446 | on an earlier line. */ | |
3447 | if (pos < ZV || !zv_strings_seen++) | |
3448 | { | |
3449 | int ovlen; | |
b4222ffa | 3450 | unsigned char *ovstr; |
ca26e1c8 | 3451 | ovlen = overlay_strings (pos, w, &ovstr); |
0f9c0ff0 RS |
3452 | |
3453 | if (ovlen > 0) | |
ca26e1c8 | 3454 | { |
0f9c0ff0 RS |
3455 | /* Skip the ones we did in a previous line. */ |
3456 | ovstr += ovstr_done; | |
3457 | ovlen -= ovstr_done; | |
3458 | ||
1c9241f5 | 3459 | while (ovlen > 0) |
0f9c0ff0 | 3460 | { |
1c9241f5 KH |
3461 | int charset, cols; |
3462 | GLYPH g; | |
3463 | ||
3464 | if (multibyte) | |
3465 | { | |
3466 | c = STRING_CHAR_AND_LENGTH (ovstr, ovlen, len); | |
3467 | ovstr += len, ovlen -= len, ovstr_done += len; | |
3468 | charset = CHAR_CHARSET (c); | |
3469 | cols = (charset == CHARSET_COMPOSITION | |
3470 | ? cmpchar_table[COMPOSITE_CHAR_ID (c)]->width | |
3471 | : CHARSET_WIDTH (charset)); | |
3472 | } | |
3473 | else | |
3474 | { | |
3475 | c = *ovstr++, ovlen--, ovstr_done++; | |
3476 | cols = 1; | |
3477 | } | |
3478 | g = MAKE_GLYPH (f, c, current_face) | rev_dir_bit; | |
3479 | while (cols-- > 0) | |
3480 | { | |
3481 | if (p1 >= leftmargin && p1 < endp) | |
3482 | *p1 = g, g |= GLYPH_MASK_PADDING; | |
3483 | p1++; | |
3484 | } | |
0f9c0ff0 RS |
3485 | } |
3486 | /* If we did all the overlay strings | |
3487 | and we have room for text, clear ovstr_done | |
3488 | just for neatness' sake. */ | |
3489 | if (ovlen == 0 && p1 < endp) | |
3490 | ovstr_done = 0; | |
ca26e1c8 KH |
3491 | } |
3492 | } | |
3493 | ||
3494 | /* Did we reach point? Record the cursor location. */ | |
3495 | if (pos == PT && cursor_vpos < 0) | |
3496 | { | |
3497 | cursor_vpos = vpos; | |
3498 | cursor_hpos = p1 - leftmargin; | |
3499 | } | |
3500 | ||
3501 | if (pos >= ZV) | |
3502 | break; | |
a2889657 | 3503 | |
c2213350 | 3504 | XSETFASTINT (position, pos); |
ca26e1c8 KH |
3505 | limit = Fnext_overlay_change (position); |
3506 | #ifdef USE_TEXT_PROPERTIES | |
dfabd9a0 RS |
3507 | /* This is just an estimate to give reasonable |
3508 | performance; nothing should go wrong if it is too small. */ | |
fe3d6921 | 3509 | if (XFASTINT (limit) > pos + 50) |
1c9241f5 KH |
3510 | { |
3511 | int limitpos = pos + 50; | |
1c9241f5 KH |
3512 | XSETFASTINT (limit, limitpos); |
3513 | } | |
ca26e1c8 KH |
3514 | limit = Fnext_single_property_change (position, Qinvisible, |
3515 | Fcurrent_buffer (), limit); | |
3516 | #endif | |
3517 | next_boundary = XFASTINT (limit); | |
3518 | /* if the `invisible' property is set, we can skip to | |
3519 | the next property change. */ | |
3520 | XSETWINDOW (ww, w); | |
3521 | prop = Fget_char_property (position, Qinvisible, ww); | |
642eefc6 | 3522 | if (TEXT_PROP_MEANS_INVISIBLE (prop)) |
dfabd9a0 | 3523 | { |
ca26e1c8 | 3524 | if (pos < PT && next_boundary >= PT) |
dfabd9a0 RS |
3525 | { |
3526 | cursor_vpos = vpos; | |
d2f84654 | 3527 | cursor_hpos = p1 - leftmargin; |
dfabd9a0 | 3528 | } |
ca26e1c8 | 3529 | pos = next_boundary; |
f6e7abc1 | 3530 | pos_byte = CHAR_TO_BYTE (pos); |
642eefc6 RS |
3531 | last_invis_skip = pos; |
3532 | last_invis_prop = prop; | |
dfabd9a0 | 3533 | } |
b0a0fbda | 3534 | } |
ca26e1c8 KH |
3535 | |
3536 | /* Did we reach point? Record the cursor location. */ | |
3537 | if (pos == PT && cursor_vpos < 0) | |
3538 | { | |
3539 | cursor_vpos = vpos; | |
3540 | cursor_hpos = p1 - leftmargin; | |
3541 | } | |
3542 | ||
3543 | /* Did we hit the end of the visible region of the buffer? | |
3544 | Stop here. */ | |
3545 | if (pos >= ZV) | |
eff87c2c RS |
3546 | { |
3547 | /* Update charstarts for the end of this line. */ | |
3548 | /* Do nothing if off the left edge or at the right edge. */ | |
3549 | if (p1 >= leftmargin && p1 + 1 != endp) | |
3550 | { | |
3551 | int *p2x = &charstart[(p1 < leftmargin | |
3552 | ? leftmargin : p1) | |
3553 | - p1start]; | |
3554 | *p2x++ = pos; | |
3555 | } | |
3556 | break; | |
3557 | } | |
b0a0fbda | 3558 | |
67481ae5 RS |
3559 | /* Figure out where (if at all) the |
3560 | redisplay_end_trigger-hook should run. */ | |
f6fd109b RS |
3561 | if (MARKERP (w->redisplay_end_trigger) |
3562 | && XMARKER (w->redisplay_end_trigger)->buffer != 0) | |
d3413a53 RS |
3563 | e_t_h = marker_position (w->redisplay_end_trigger); |
3564 | else if (INTEGERP (w->redisplay_end_trigger)) | |
3565 | e_t_h = XINT (w->redisplay_end_trigger); | |
67481ae5 RS |
3566 | else |
3567 | e_t_h = ZV; | |
3568 | ||
3569 | /* If we've gone past the place to run a hook, | |
3570 | run the hook. */ | |
3571 | if (pos >= e_t_h && e_t_h != ZV) | |
3572 | { | |
e0bfbde6 RS |
3573 | Lisp_Object args[3]; |
3574 | ||
3575 | args[0] = Qredisplay_end_trigger_functions; | |
3576 | XSETWINDOW (args[1], w); | |
3577 | XSETINT (args[2], e_t_h); | |
e0bfbde6 | 3578 | |
9c49d3d7 KH |
3579 | /* Since we are *trying* to run these functions, |
3580 | don't try to run them again, even if they get an error. */ | |
d3413a53 | 3581 | w->redisplay_end_trigger = Qnil; |
9c49d3d7 KH |
3582 | Frun_hook_with_args (3, args); |
3583 | ||
67481ae5 | 3584 | e_t_h = ZV; |
f6fd109b RS |
3585 | /* Notice if it changed the face of this character. */ |
3586 | next_face_change = pos; | |
67481ae5 RS |
3587 | } |
3588 | ||
f6fd109b RS |
3589 | #ifdef HAVE_FACES |
3590 | /* Did we hit a face change? Figure out what face we should | |
3591 | use now. We also hit this the first time through the | |
3592 | loop, to see what face we should start with. */ | |
ab6ce60e RS |
3593 | if (pos >= next_face_change |
3594 | && (FRAME_WINDOW_P (f) || FRAME_MSDOS_P (f))) | |
1c9241f5 KH |
3595 | { |
3596 | int limit = pos + 50; | |
3597 | ||
1c9241f5 KH |
3598 | current_face = compute_char_face (f, w, pos, |
3599 | region_beg, region_end, | |
3600 | &next_face_change, limit, 0); | |
3601 | } | |
f6fd109b RS |
3602 | #endif |
3603 | ||
67481ae5 RS |
3604 | /* Compute the next place we need to stop |
3605 | and do something special; set PAUSE. */ | |
3606 | ||
ca26e1c8 | 3607 | pause = ZV; |
1c2250c2 | 3608 | |
ca26e1c8 KH |
3609 | if (pos < next_boundary && next_boundary < pause) |
3610 | pause = next_boundary; | |
1c2250c2 JB |
3611 | if (pos < next_face_change && next_face_change < pause) |
3612 | pause = next_face_change; | |
3613 | ||
67481ae5 RS |
3614 | if (e_t_h < pause) |
3615 | pause = e_t_h; | |
3616 | ||
31b24551 JB |
3617 | /* Wouldn't you hate to read the next line to someone over |
3618 | the phone? */ | |
ae3b1442 KH |
3619 | if (pos < PT && PT < pause) |
3620 | pause = PT; | |
a2889657 JB |
3621 | if (pos < GPT && GPT < pause) |
3622 | pause = GPT; | |
3623 | ||
12adba34 RS |
3624 | /* LIMIT_BYTE is not the same place in the buffer as PAUSE. |
3625 | It is a limit on valid characters. | |
3626 | We use it to bound STRING_CHAR_AND_LENGTH. */ | |
3627 | limit_byte = ZV_BYTE; | |
3628 | if (pos < GPT && GPT_BYTE < limit_byte) | |
3629 | limit_byte = GPT_BYTE; | |
3630 | ||
3631 | { | |
3632 | int temp = CHAR_TO_BYTE (pos); | |
3633 | p = BYTE_POS_ADDR (temp); | |
3634 | } | |
a2889657 | 3635 | } |
ca26e1c8 | 3636 | |
ca26e1c8 KH |
3637 | if (p1 >= endp) |
3638 | break; | |
3639 | ||
3640 | p1prev = p1; | |
0d09d1e6 | 3641 | p1_wide_column_end = (GLYPH *) 0; |
ca26e1c8 | 3642 | |
1c9241f5 | 3643 | if (multibyte) |
12adba34 | 3644 | c = STRING_CHAR_AND_LENGTH (p, limit_byte - pos_byte, len), p += len; |
1c9241f5 KH |
3645 | else |
3646 | c = *p++, len = 1; | |
376b0e59 RS |
3647 | /* Let a display table override all standard display methods. */ |
3648 | if (dp != 0 && VECTORP (DISP_CHAR_VECTOR (dp, c))) | |
3649 | { | |
3650 | p1 = copy_part_of_rope (f, p1, leftmargin, | |
3651 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->contents, | |
3652 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->size, | |
1c9241f5 | 3653 | current_face, rev_dir_bit); |
376b0e59 RS |
3654 | } |
3655 | else if (c >= 040 && c < 0177) | |
a2889657 | 3656 | { |
d2f84654 | 3657 | if (p1 >= leftmargin) |
1c9241f5 | 3658 | *p1 = MAKE_GLYPH (f, c, current_face) | rev_dir_bit; |
a2889657 JB |
3659 | p1++; |
3660 | } | |
3661 | else if (c == '\n') | |
3662 | { | |
1842fc1a RS |
3663 | #if 0 |
3664 | /* Same as p1prev, but after the invis_vector_contents text | |
3665 | (if we have that on this line). */ | |
3666 | GLYPH *p1prev_modified; | |
3667 | #endif | |
3668 | ||
a2889657 | 3669 | invis = 0; |
642eefc6 RS |
3670 | if (last_invis_skip == pos |
3671 | && TEXT_PROP_MEANS_INVISIBLE_WITH_ELLIPSIS (last_invis_prop)) | |
3672 | invis = 1; | |
ca26e1c8 | 3673 | while (pos + 1 < ZV |
a2889657 | 3674 | && selective > 0 |
12adba34 | 3675 | && indented_beyond_p (pos + 1, pos_byte + 1, selective)) |
a2889657 | 3676 | { |
12adba34 RS |
3677 | int opoint = PT, opoint_byte = PT_BYTE; |
3678 | ||
a2889657 | 3679 | invis = 1; |
9ce37c9d | 3680 | INC_BOTH (pos, pos_byte); |
12adba34 | 3681 | scan_newline (pos, pos_byte, ZV, ZV_BYTE, 1, 1); |
b5231eda | 3682 | pos = PT, pos_byte = PT_BYTE; |
12adba34 RS |
3683 | if (FETCH_BYTE (pos_byte - 1) == '\n') |
3684 | { | |
3685 | pos--; | |
3686 | pos_byte--; | |
3687 | } | |
26a9b1f3 | 3688 | TEMP_SET_PT_BOTH (opoint, opoint_byte); |
a2889657 | 3689 | } |
d2f84654 | 3690 | if (invis && selective_rlen > 0 && p1 >= leftmargin) |
a2889657 | 3691 | { |
1842fc1a RS |
3692 | #if 0 |
3693 | GLYPH *cs, *csend; | |
3694 | ||
3695 | cs = charstart + (p1 - p1start); | |
3696 | #endif | |
3697 | ||
a2889657 | 3698 | p1 += selective_rlen; |
d2f84654 | 3699 | if (p1 - leftmargin > width) |
a2889657 | 3700 | p1 = endp; |
1842fc1a RS |
3701 | |
3702 | #if 0 /* This needs more work; charstarts needs to record | |
3703 | both whether a position ho;ds an ellipsis character | |
3704 | and what buffer position it corresponds to. */ | |
3705 | csend = charstart + (p1 - p1start); | |
3706 | while (cs != csend) | |
3707 | *cs++ = -2; | |
3708 | /* The idea is to use p1prev_modified instead of p1prev | |
3709 | in the loop below over p2x. */ | |
3710 | p1prev_modified = p1; | |
3711 | #endif | |
3712 | ||
278feba9 | 3713 | copy_part_of_rope (f, p1prev, p1prev, invis_vector_contents, |
1c9241f5 | 3714 | (p1 - p1prev), current_face, rev_dir_bit); |
a2889657 | 3715 | } |
545e04f6 KH |
3716 | |
3717 | /* Update charstarts for the newline that ended this line. */ | |
3718 | /* Do nothing here for a char that's entirely off the left edge | |
3719 | or if it starts at the right edge. */ | |
3720 | if (p1 >= leftmargin && p1prev != endp) | |
3721 | { | |
3722 | /* Store the newline's position into charstarts | |
3723 | for the column where the newline starts. | |
3724 | Store -1 for the rest of the glyphs it occupies. */ | |
3725 | int *p2x = &charstart[(p1prev < leftmargin | |
3726 | ? leftmargin : p1prev) | |
3727 | - p1start]; | |
3728 | int *p2 = &charstart[(p1 < endp ? p1 : endp) - p1start]; | |
3729 | ||
3730 | *p2x++ = pos; | |
3731 | while (p2x < p2) | |
3732 | *p2x++ = -1; | |
3733 | } | |
1842fc1a RS |
3734 | #ifdef HAVE_FACES |
3735 | /* Draw the face of the newline character as extending all the | |
3736 | way to the end of the frame line. */ | |
3737 | if (current_face) | |
3738 | { | |
3739 | if (p1 < leftmargin) | |
3740 | p1 = leftmargin; | |
3741 | while (p1 < endp) | |
3742 | *p1++ = FAST_MAKE_GLYPH (' ', current_face) | rev_dir_bit; | |
3743 | } | |
3744 | #endif | |
545e04f6 | 3745 | |
68a37fa8 | 3746 | break; |
a2889657 JB |
3747 | } |
3748 | else if (c == '\t') | |
3749 | { | |
3750 | do | |
3751 | { | |
d2f84654 | 3752 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 | 3753 | *p1 = MAKE_GLYPH (f, ' ', current_face) | rev_dir_bit; |
a2889657 JB |
3754 | p1++; |
3755 | } | |
d2f84654 | 3756 | while ((p1 - leftmargin + taboffset + hscroll - (hscroll > 0)) |
a2889657 JB |
3757 | % tab_width); |
3758 | } | |
6e8290aa | 3759 | else if (c == Ctl ('M') && selective == -1) |
a2889657 | 3760 | { |
12adba34 RS |
3761 | int opoint = PT, opoint_byte = PT_BYTE; |
3762 | scan_newline (pos, pos_byte, ZV, ZV_BYTE, 1, 1); | |
3763 | pos = PT, pos_byte = PT_BYTE; | |
26a9b1f3 | 3764 | TEMP_SET_PT_BOTH (opoint, opoint_byte); |
12adba34 RS |
3765 | |
3766 | if (FETCH_BYTE (pos_byte - 1) == '\n') | |
3767 | pos--, pos_byte--; | |
a2889657 JB |
3768 | if (selective_rlen > 0) |
3769 | { | |
3770 | p1 += selective_rlen; | |
d2f84654 | 3771 | if (p1 - leftmargin > width) |
a2889657 | 3772 | p1 = endp; |
278feba9 | 3773 | copy_part_of_rope (f, p1prev, p1prev, invis_vector_contents, |
1c9241f5 | 3774 | (p1 - p1prev), current_face, rev_dir_bit); |
a2889657 | 3775 | } |
87485d6f | 3776 | #ifdef HAVE_FACES |
3c5c35c5 JB |
3777 | /* Draw the face of the newline character as extending all the |
3778 | way to the end of the frame line. */ | |
3779 | if (current_face) | |
1105ff20 KH |
3780 | { |
3781 | if (p1 < leftmargin) | |
3782 | p1 = leftmargin; | |
3783 | while (p1 < endp) | |
1c9241f5 | 3784 | *p1++ = FAST_MAKE_GLYPH (' ', current_face) | rev_dir_bit; |
1105ff20 | 3785 | } |
3c5c35c5 | 3786 | #endif |
545e04f6 KH |
3787 | |
3788 | /* Update charstarts for the ^M that ended this line. */ | |
3789 | /* Do nothing here for a char that's entirely off the left edge | |
3790 | or if it starts at the right edge. */ | |
3791 | if (p1 >= leftmargin && p1prev != endp) | |
3792 | { | |
3793 | /* Store the newline's position into charstarts | |
3794 | for the column where the newline starts. | |
3795 | Store -1 for the rest of the glyphs it occupies. */ | |
3796 | int *p2x = &charstart[(p1prev < leftmargin | |
3797 | ? leftmargin : p1prev) | |
3798 | - p1start]; | |
3799 | int *p2 = &charstart[(p1 < endp ? p1 : endp) - p1start]; | |
3800 | ||
3801 | *p2x++ = pos; | |
3802 | while (p2x < p2) | |
3803 | *p2x++ = -1; | |
3804 | } | |
68a37fa8 | 3805 | break; |
a2889657 | 3806 | } |
a2889657 JB |
3807 | else if (c < 0200 && ctl_arrow) |
3808 | { | |
d2f84654 | 3809 | if (p1 >= leftmargin) |
e57bca5d KH |
3810 | *p1 = (fix_glyph |
3811 | (f, (dp && INTEGERP (DISP_CTRL_GLYPH (dp)) | |
3812 | && GLYPH_CHAR_VALID_P (XINT (DISP_CTRL_GLYPH (dp))) | |
3813 | ? XINT (DISP_CTRL_GLYPH (dp)) : '^'), | |
3814 | current_face) | |
1c9241f5 | 3815 | | rev_dir_bit); |
a2889657 | 3816 | p1++; |
d2f84654 | 3817 | if (p1 >= leftmargin && p1 < endp) |
1c9241f5 | 3818 | *p1 = MAKE_GLYPH (f, c ^ 0100, current_face) | rev_dir_bit; |
a2889657 JB |
3819 | p1++; |
3820 | } | |
1c9241f5 KH |
3821 | else |
3822 | { | |
a2c983d5 | 3823 | /* C is a multibyte character or a character to be displayed |
94487c4e | 3824 | by octal form. */ |
a2c983d5 | 3825 | int remaining_bytes = len; |
1c9241f5 | 3826 | |
a688bb24 | 3827 | if (c >= 0400 && CHAR_VALID_P (c, 0)) |
1c9241f5 | 3828 | { |
a2c983d5 KH |
3829 | /* C is a multibyte character. */ |
3830 | int charset = CHAR_CHARSET (c); | |
3831 | int columns = (charset == CHARSET_COMPOSITION | |
3832 | ? cmpchar_table[COMPOSITE_CHAR_ID (c)]->width | |
3833 | : CHARSET_WIDTH (charset)); | |
3834 | GLYPH g = MAKE_GLYPH (f, c, current_face) | rev_dir_bit; | |
3835 | ||
3836 | while (columns--) | |
3837 | { | |
3838 | if (p1 >= leftmargin && p1 < endp) | |
3839 | *p1 = g, g |= GLYPH_MASK_PADDING; | |
3840 | p1++; | |
3841 | } | |
3842 | p1_wide_column_end = p1; | |
3843 | remaining_bytes -= CHARSET_BYTES (charset); | |
1c9241f5 | 3844 | } |
0d09d1e6 | 3845 | |
a2c983d5 | 3846 | while (remaining_bytes > 0) |
0d09d1e6 | 3847 | { |
a2c983d5 KH |
3848 | c = *(p - remaining_bytes--); |
3849 | ||
3850 | if (p1 >= leftmargin && p1 < endp) | |
3851 | *p1 = (fix_glyph | |
3852 | (f, | |
3853 | (dp && INTEGERP (DISP_ESCAPE_GLYPH (dp)) | |
3854 | && GLYPH_CHAR_VALID_P (XINT (DISP_ESCAPE_GLYPH (dp))) | |
3855 | ? XINT (DISP_ESCAPE_GLYPH (dp)) : '\\'), | |
3856 | current_face) | |
3857 | | rev_dir_bit); | |
3858 | p1++; | |
3859 | if (p1 >= leftmargin && p1 < endp) | |
3860 | *p1 = (MAKE_GLYPH (f, (c >> 6) + '0', current_face) | |
3861 | | rev_dir_bit); | |
3862 | p1++; | |
3863 | if (p1 >= leftmargin && p1 < endp) | |
3864 | *p1 = (MAKE_GLYPH (f, (7 & (c >> 3)) + '0', current_face) | |
3865 | | rev_dir_bit); | |
3866 | p1++; | |
3867 | if (p1 >= leftmargin && p1 < endp) | |
3868 | *p1 = (MAKE_GLYPH (f, (7 & c) + '0', current_face) | |
3869 | | rev_dir_bit); | |
3870 | p1++; | |
0d09d1e6 | 3871 | } |
1c9241f5 | 3872 | } |
31b24551 | 3873 | |
ca26e1c8 | 3874 | prevpos = pos; |
12adba34 RS |
3875 | prevpos_byte = pos_byte; |
3876 | pos++; | |
3877 | pos_byte += len; | |
545e04f6 KH |
3878 | |
3879 | /* Update charstarts for the character just output. */ | |
3880 | ||
3881 | /* Do nothing here for a char that's entirely off the left edge. */ | |
3882 | if (p1 >= leftmargin) | |
3883 | { | |
3884 | /* Store the char's position into charstarts | |
3885 | for the first glyph occupied by this char. | |
3886 | Store -1 for the rest of the glyphs it occupies. */ | |
3887 | if (p1 != p1prev) | |
3888 | { | |
3889 | int *p2x = &charstart[(p1prev < leftmargin | |
3890 | ? leftmargin : p1prev) | |
3891 | - p1start]; | |
3892 | int *p2 = &charstart[(p1 < endp ? p1 : endp) - p1start]; | |
3893 | ||
3894 | if (p2x < p2) | |
3895 | *p2x++ = prevpos; | |
3896 | while (p2x < p2) | |
3897 | *p2x++ = -1; | |
3898 | } | |
3899 | } | |
a2889657 JB |
3900 | } |
3901 | ||
3902 | val.hpos = - XINT (w->hscroll); | |
3903 | if (val.hpos) | |
3904 | val.hpos++; | |
3905 | ||
3906 | val.vpos = 1; | |
3907 | ||
3908 | lastpos = pos; | |
12adba34 | 3909 | lastpos_byte = pos_byte; |
a2889657 | 3910 | |
efc63ef0 RS |
3911 | /* Store 0 in this charstart line for the positions where |
3912 | there is no character. But do leave what was recorded | |
3913 | for the character that ended the line. */ | |
85bcef6c RS |
3914 | /* Add 1 in the endtest to compensate for the fact that ENDP was |
3915 | made from WIDTH, which is 1 less than the window's actual | |
3916 | internal width. */ | |
a007eef6 RS |
3917 | i = p1 - p1start + 1; |
3918 | if (p1 < leftmargin) | |
3919 | i += leftmargin - p1; | |
3920 | for (; i < endp - p1start + 1; i++) | |
efc63ef0 RS |
3921 | charstart[i] = 0; |
3922 | ||
a2889657 JB |
3923 | /* Handle continuation in middle of a character */ |
3924 | /* by backing up over it */ | |
3925 | if (p1 > endp) | |
3926 | { | |
5fcbb24d JB |
3927 | /* Don't back up if we never actually displayed any text. |
3928 | This occurs when the minibuffer prompt takes up the whole line. */ | |
3929 | if (p1prev) | |
3930 | { | |
1c9241f5 KH |
3931 | /* Start the next line with that same character whose |
3932 | character code is C and the length of multi-byte form is | |
3933 | LEN. */ | |
3934 | pos = prevpos; | |
12adba34 | 3935 | pos_byte = prevpos_byte; |
1c9241f5 | 3936 | |
0d09d1e6 KH |
3937 | if (p1_wide_column_end < endp) |
3938 | /* As ENDP is not in the middle of wide-column character, | |
3939 | we can break the line at ENDP and start from the middle | |
3940 | column in the next line. So, adjust VAL.HPOS to skip | |
3941 | the columns output on this line. */ | |
1c9241f5 KH |
3942 | val.hpos += p1prev - endp; |
3943 | else | |
3944 | { | |
0d09d1e6 KH |
3945 | /* We displayed a wide-column character at around ENDP. |
3946 | Since we can't broke it in the middle, the whole | |
3947 | character should be driven into the next line. */ | |
1c9241f5 KH |
3948 | /* As the result, the actual columns occupied by the |
3949 | text on this line is less than WIDTH. VAL.TAB_OFFSET | |
3950 | must be adjusted. */ | |
3951 | taboffset = taboffset + (p1prev - endp); | |
3952 | /* Let's fill unused columns with TRUNCATOR or CONTINUER. */ | |
3953 | { | |
3954 | GLYPH g = fix_glyph (f, truncate ? truncator : continuer, 0); | |
3955 | while (p1prev < endp) | |
3956 | *p1prev++ = g; | |
3957 | } | |
3958 | /* If POINT is at POS, cursor should not on this line. */ | |
3959 | lastpos = pos; | |
12adba34 | 3960 | lastpos_byte = pos_byte; |
1c9241f5 KH |
3961 | if (PT == pos) |
3962 | cursor_vpos = -1; | |
3963 | } | |
5fcbb24d JB |
3964 | } |
3965 | ||
a2889657 JB |
3966 | /* Keep in this line everything up to the continuation column. */ |
3967 | p1 = endp; | |
3968 | } | |
3969 | ||
3970 | /* Finish deciding which character to start the next line on, | |
3971 | and what hpos to start it at. | |
3972 | Also set `lastpos' to the last position which counts as "on this line" | |
3973 | for cursor-positioning. */ | |
3974 | ||
3975 | if (pos < ZV) | |
3976 | { | |
12adba34 | 3977 | if (FETCH_BYTE (pos_byte) == '\n') |
dd5f6267 | 3978 | { |
12adba34 RS |
3979 | int opoint = PT, opoint_byte = PT_BYTE; |
3980 | ||
dd5f6267 | 3981 | /* If stopped due to a newline, start next line after it */ |
26a9b1f3 | 3982 | TEMP_SET_PT_BOTH (pos + 1, pos_byte + 1); |
12adba34 | 3983 | |
1c9241f5 | 3984 | val.tab_offset = 0; |
dd5f6267 KH |
3985 | /* Check again for hidden lines, in case the newline occurred exactly |
3986 | at the right margin. */ | |
12adba34 RS |
3987 | while (PT < ZV && selective > 0 |
3988 | && indented_beyond_p (PT, PT_BYTE, selective)) | |
3989 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 1); | |
3990 | ||
3991 | pos = PT, pos_byte = PT_BYTE; | |
26a9b1f3 | 3992 | TEMP_SET_PT_BOTH (opoint, opoint_byte); |
dd5f6267 | 3993 | } |
a2889657 JB |
3994 | else |
3995 | /* Stopped due to right margin of window */ | |
3996 | { | |
3997 | if (truncate) | |
3998 | { | |
12adba34 RS |
3999 | int opoint = PT, opoint_byte = PT_BYTE; |
4000 | ||
26a9b1f3 | 4001 | TEMP_SET_PT_BOTH (pos, pos_byte); |
278feba9 | 4002 | *p1++ = fix_glyph (f, truncator, 0); |
a2889657 JB |
4003 | /* Truncating => start next line after next newline, |
4004 | and point is on this line if it is before the newline, | |
4005 | and skip none of first char of next line */ | |
dd5f6267 | 4006 | do |
12adba34 RS |
4007 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 1); |
4008 | while (PT < ZV && selective > 0 | |
4009 | && indented_beyond_p (PT, PT_BYTE, selective)); | |
4010 | pos = PT, pos_byte = PT_BYTE; | |
a2889657 | 4011 | val.hpos = XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0; |
26a9b1f3 | 4012 | TEMP_SET_PT_BOTH (opoint, opoint_byte); |
a2889657 | 4013 | |
12adba34 RS |
4014 | lastpos = pos - (FETCH_BYTE (pos_byte - 1) == '\n'); |
4015 | lastpos_byte = CHAR_TO_BYTE (lastpos); | |
1c9241f5 | 4016 | val.tab_offset = 0; |
a2889657 JB |
4017 | } |
4018 | else | |
4019 | { | |
278feba9 | 4020 | *p1++ = fix_glyph (f, continuer, 0); |
a2889657 | 4021 | val.vpos = 0; |
93fdf93b | 4022 | DEC_BOTH (lastpos, lastpos_byte); |
1c9241f5 | 4023 | val.tab_offset = taboffset + width; |
a2889657 JB |
4024 | } |
4025 | } | |
4026 | } | |
1c9241f5 KH |
4027 | else |
4028 | val.tab_offset = 0; | |
a2889657 JB |
4029 | |
4030 | /* If point is at eol or in invisible text at eol, | |
44fa5b1e | 4031 | record its frame location now. */ |
a2889657 | 4032 | |
ae3b1442 | 4033 | if (start <= PT && PT <= lastpos && cursor_vpos < 0) |
a2889657 JB |
4034 | { |
4035 | cursor_vpos = vpos; | |
d2f84654 | 4036 | cursor_hpos = p1 - leftmargin; |
a2889657 JB |
4037 | } |
4038 | ||
4039 | if (cursor_vpos == vpos) | |
4040 | { | |
4041 | if (cursor_hpos < 0) cursor_hpos = 0; | |
4042 | if (cursor_hpos > width) cursor_hpos = width; | |
73f194f1 | 4043 | cursor_hpos += WINDOW_LEFT_MARGIN (w); |
44fa5b1e | 4044 | if (w == XWINDOW (FRAME_SELECTED_WINDOW (f))) |
a2889657 | 4045 | { |
5936754e RS |
4046 | this_line_bufpos = 0; |
4047 | ||
4048 | /* If this frame's cursor will be in its echo area, | |
4049 | don't record a cursor from the window text, | |
4050 | and turn off the optimization for cursor-motion-only case. */ | |
b5bbc9a5 KH |
4051 | if (!(cursor_in_echo_area && FRAME_HAS_MINIBUF_P (f) |
4052 | && EQ (FRAME_MINIBUF_WINDOW (f), minibuf_window))) | |
4053 | { | |
4054 | FRAME_CURSOR_Y (f) = cursor_vpos; | |
4055 | FRAME_CURSOR_X (f) = cursor_hpos; | |
a2889657 | 4056 | |
5936754e | 4057 | if (w == XWINDOW (selected_window)) |
a2889657 | 4058 | { |
5936754e RS |
4059 | /* Line is not continued and did not start |
4060 | in middle of character */ | |
4061 | if ((hpos - WINDOW_LEFT_MARGIN (w) | |
4062 | == (XINT (w->hscroll) ? 1 - XINT (w->hscroll) : 0)) | |
4063 | && val.vpos) | |
4064 | { | |
4065 | this_line_bufpos = start; | |
4066 | this_line_buffer = current_buffer; | |
4067 | this_line_vpos = cursor_vpos; | |
4068 | this_line_start_hpos = hpos - WINDOW_LEFT_MARGIN (w); | |
4069 | this_line_endpos = Z - lastpos; | |
4070 | } | |
a2889657 | 4071 | } |
a2889657 JB |
4072 | } |
4073 | } | |
4074 | } | |
4075 | ||
4076 | /* If hscroll and line not empty, insert truncation-at-left marker */ | |
4077 | if (hscroll && lastpos != start) | |
4078 | { | |
1c9241f5 KH |
4079 | GLYPH g = fix_glyph (f, truncator, 0); |
4080 | *leftmargin = g; | |
d2f84654 RS |
4081 | if (p1 <= leftmargin) |
4082 | p1 = leftmargin + 1; | |
1c9241f5 KH |
4083 | else /* MULE: it may be a wide-column character */ |
4084 | { | |
4085 | p1prev = leftmargin + 1; | |
4086 | while (p1prev < p1 && *p1prev & GLYPH_MASK_PADDING) | |
4087 | *p1prev++ = g; | |
4088 | } | |
a2889657 JB |
4089 | } |
4090 | ||
73f194f1 | 4091 | if (!WINDOW_RIGHTMOST_P (w)) |
a2889657 JB |
4092 | { |
4093 | endp++; | |
d2f84654 | 4094 | if (p1 < leftmargin) p1 = leftmargin; |
a2889657 | 4095 | while (p1 < endp) *p1++ = SPACEGLYPH; |
b1d1124b | 4096 | |
88f22aff JB |
4097 | /* Don't draw vertical bars if we're using scroll bars. They're |
4098 | covered up by the scroll bars, and it's distracting to see | |
4099 | them when the scroll bar windows are flickering around to be | |
b1d1124b | 4100 | reconfigured. */ |
73f194f1 | 4101 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT (f)) |
75d13c64 KH |
4102 | { |
4103 | int i; | |
4104 | for (i = 0; i < FRAME_SCROLL_BAR_COLS (f); i++) | |
4105 | *p1++ = SPACEGLYPH; | |
4106 | } | |
73f194f1 | 4107 | else if (!FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
75d13c64 | 4108 | *p1++ = (dp && INTEGERP (DISP_BORDER_GLYPH (dp)) |
8bb6ca14 | 4109 | ? XINT (DISP_BORDER_GLYPH (dp)) |
75d13c64 | 4110 | : '|'); |
a2889657 JB |
4111 | } |
4112 | desired_glyphs->used[vpos] = max (desired_glyphs->used[vpos], | |
4113 | p1 - desired_glyphs->glyphs[vpos]); | |
4114 | desired_glyphs->glyphs[vpos][desired_glyphs->used[vpos]] = 0; | |
4115 | ||
4116 | /* If the start of this line is the overlay arrow-position, | |
4117 | then put the arrow string into the display-line. */ | |
4118 | ||
e24c997d | 4119 | if (MARKERP (Voverlay_arrow_position) |
a2889657 JB |
4120 | && current_buffer == XMARKER (Voverlay_arrow_position)->buffer |
4121 | && start == marker_position (Voverlay_arrow_position) | |
e24c997d | 4122 | && STRINGP (Voverlay_arrow_string) |
a2889657 JB |
4123 | && ! overlay_arrow_seen) |
4124 | { | |
0a9dc68b | 4125 | int i, i_byte; |
a2889657 | 4126 | int len = XSTRING (Voverlay_arrow_string)->size; |
142be3dd | 4127 | int arrow_end; |
a2889657 | 4128 | |
b1d1124b JB |
4129 | if (len > width) |
4130 | len = width; | |
212e4f87 RS |
4131 | |
4132 | /* If the arrow string has text props, obey them when displaying. */ | |
4133 | for (i = 0, i_byte = 0; i < len; ) | |
c4628384 | 4134 | { |
212e4f87 RS |
4135 | int c; |
4136 | Lisp_Object face, ilisp; | |
4137 | int newface; | |
4138 | int idx = i; | |
c4628384 | 4139 | |
212e4f87 RS |
4140 | if (STRING_MULTIBYTE (Voverlay_arrow_string)) |
4141 | FETCH_STRING_CHAR_ADVANCE (c, Voverlay_arrow_string, i, i_byte); | |
4142 | else | |
4143 | c = XSTRING (Voverlay_arrow_string)->data[i++]; | |
0a9dc68b | 4144 | |
212e4f87 RS |
4145 | XSETFASTINT (ilisp, i); |
4146 | #ifdef HAVE_FACES | |
4147 | if (FRAME_WINDOW_P (f)) | |
4148 | { | |
c4628384 RS |
4149 | face = Fget_text_property (ilisp, Qface, Voverlay_arrow_string); |
4150 | newface = compute_glyph_face_1 (f, face, 0); | |
212e4f87 | 4151 | c = FAST_MAKE_GLYPH (c, newface); |
c4628384 | 4152 | } |
87485d6f | 4153 | #endif /* HAVE_FACES */ |
212e4f87 | 4154 | leftmargin[idx] = c; |
c4628384 | 4155 | } |
142be3dd JB |
4156 | |
4157 | /* Bug in SunOS 4.1.1 compiler requires this intermediate variable. */ | |
d2f84654 | 4158 | arrow_end = (leftmargin - desired_glyphs->glyphs[vpos]) + len; |
142be3dd JB |
4159 | if (desired_glyphs->used[vpos] < arrow_end) |
4160 | desired_glyphs->used[vpos] = arrow_end; | |
a2889657 JB |
4161 | |
4162 | overlay_arrow_seen = 1; | |
4163 | } | |
4164 | ||
4165 | val.bufpos = pos; | |
12adba34 | 4166 | val.bytepos = pos_byte; |
0f9c0ff0 | 4167 | val.ovstring_chars_done = ovstr_done; |
a2889657 JB |
4168 | val_display_text_line = val; |
4169 | return &val_display_text_line; | |
4170 | } | |
4171 | \f | |
7ce2c095 RS |
4172 | /* Redisplay the menu bar in the frame for window W. */ |
4173 | ||
4174 | static void | |
4175 | display_menu_bar (w) | |
4176 | struct window *w; | |
4177 | { | |
4178 | Lisp_Object items, tail; | |
4179 | register int vpos = 0; | |
4180 | register FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
eeb4f710 | 4181 | int maxendcol = FRAME_WIDTH (f); |
7ce2c095 | 4182 | int hpos = 0; |
8351baf2 | 4183 | int i; |
7ce2c095 | 4184 | |
dc937613 | 4185 | #ifdef HAVE_NTGUI |
d129c4c2 KH |
4186 | if (!NILP (Vwindow_system)) |
4187 | return; | |
dc937613 RS |
4188 | #endif |
4189 | ||
4190 | #ifdef USE_X_TOOLKIT | |
d3413a53 | 4191 | if (FRAME_X_P (f)) |
7ce2c095 | 4192 | return; |
dc937613 | 4193 | #endif /* USE_X_TOOLKIT */ |
7ce2c095 RS |
4194 | |
4195 | get_display_line (f, vpos, 0); | |
4196 | ||
8351baf2 | 4197 | items = FRAME_MENU_BAR_ITEMS (f); |
469937ac | 4198 | for (i = 0; i < XVECTOR (items)->size; i += 4) |
7ce2c095 | 4199 | { |
8351baf2 RS |
4200 | Lisp_Object pos, string; |
4201 | string = XVECTOR (items)->contents[i + 1]; | |
4202 | if (NILP (string)) | |
4203 | break; | |
2d66ad19 | 4204 | |
469937ac | 4205 | XSETFASTINT (XVECTOR (items)->contents[i + 3], hpos); |
7ce2c095 RS |
4206 | |
4207 | if (hpos < maxendcol) | |
11c52c4f | 4208 | hpos = display_string (w, vpos, |
7ce2c095 | 4209 | XSTRING (string)->data, |
fc932ac6 | 4210 | STRING_BYTES (XSTRING (string)), |
0a9dc68b RS |
4211 | hpos, 0, 0, hpos, maxendcol, |
4212 | STRING_MULTIBYTE (string)); | |
6b1bbc46 | 4213 | /* Put a space between items. */ |
2d66ad19 RS |
4214 | if (hpos < maxendcol) |
4215 | { | |
6b1bbc46 | 4216 | int hpos1 = hpos + 1; |
278feba9 | 4217 | hpos = display_string (w, vpos, "", 0, hpos, 0, 0, |
a3788d53 | 4218 | min (hpos1, maxendcol), maxendcol, 0); |
2d66ad19 | 4219 | } |
7ce2c095 RS |
4220 | } |
4221 | ||
4222 | FRAME_DESIRED_GLYPHS (f)->bufp[vpos] = 0; | |
4223 | FRAME_DESIRED_GLYPHS (f)->highlight[vpos] = mode_line_inverse_video; | |
2d66ad19 RS |
4224 | |
4225 | /* Fill out the line with spaces. */ | |
4226 | if (maxendcol > hpos) | |
a3788d53 | 4227 | hpos = display_string (w, vpos, "", 0, hpos, 0, 0, maxendcol, maxendcol, 0); |
db6f348c JB |
4228 | |
4229 | /* Clear the rest of the lines allocated to the menu bar. */ | |
4230 | vpos++; | |
4231 | while (vpos < FRAME_MENU_BAR_LINES (f)) | |
4232 | get_display_line (f, vpos++, 0); | |
7ce2c095 RS |
4233 | } |
4234 | \f | |
a2889657 JB |
4235 | /* Display the mode line for window w */ |
4236 | ||
4237 | static void | |
4238 | display_mode_line (w) | |
4239 | struct window *w; | |
4240 | { | |
4241 | register int vpos = XFASTINT (w->height) + XFASTINT (w->top) - 1; | |
73f194f1 RS |
4242 | register int left = WINDOW_LEFT_MARGIN (w); |
4243 | register int right = WINDOW_RIGHT_MARGIN (w); | |
44fa5b1e | 4244 | register FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
a2889657 | 4245 | |
aa6d10fa | 4246 | line_number_displayed = 0; |
155ef550 | 4247 | w->column_number_displayed = Qnil; |
aa6d10fa | 4248 | |
44fa5b1e | 4249 | get_display_line (f, vpos, left); |
03b294dc RS |
4250 | |
4251 | /* Temporarily make frame F's kboard the current kboard | |
4252 | so that kboard-local variables in the mode_line_format | |
4253 | will get the right values. */ | |
4254 | push_frame_kboard (f); | |
4255 | ||
4256 | display_mode_element (w, vpos, left, 0, right, right, | |
4257 | current_buffer->mode_line_format); | |
4258 | ||
4259 | pop_frame_kboard (); | |
4260 | ||
44fa5b1e | 4261 | FRAME_DESIRED_GLYPHS (f)->bufp[vpos] = 0; |
a2889657 | 4262 | |
73f194f1 RS |
4263 | /* Put the mode line in inverse video. |
4264 | Use faces if possible, since that lets us handle | |
4265 | partial-width windows and avoid inverting the scroll bar columns. */ | |
87485d6f | 4266 | #ifdef HAVE_FACES |
73f194f1 | 4267 | if (! FRAME_TERMCAP_P (f) && mode_line_inverse_video) |
d7eb09a0 RS |
4268 | { |
4269 | /* For a partial width window, explicitly set face of each glyph. */ | |
4270 | int i; | |
1c9241f5 | 4271 | unsigned int padding; |
d7eb09a0 RS |
4272 | GLYPH *ptr = FRAME_DESIRED_GLYPHS (f)->glyphs[vpos]; |
4273 | for (i = left; i < right; ++i) | |
1c9241f5 KH |
4274 | { |
4275 | padding = ptr[i] & GLYPH_MASK_PADDING; | |
4276 | ptr[i] = FAST_MAKE_GLYPH (FAST_GLYPH_CHAR (ptr[i]), 1) | padding; | |
4277 | } | |
d7eb09a0 | 4278 | } |
010a899e | 4279 | else |
4cdc65eb | 4280 | #endif |
73f194f1 RS |
4281 | |
4282 | /* Make the mode line inverse video if the entire line | |
4283 | is made of mode lines. | |
4284 | I.e. if this window is full width, | |
4285 | or if it is the child of a full width window | |
4286 | (which implies that that window is split side-by-side | |
4287 | and the rest of this line is mode lines of the sibling windows). */ | |
010a899e KH |
4288 | if (WINDOW_FULL_WIDTH_P (w) |
4289 | || WINDOW_FULL_WIDTH_P (XWINDOW (w->parent))) | |
73f194f1 | 4290 | FRAME_DESIRED_GLYPHS (f)->highlight[vpos] = mode_line_inverse_video; |
a2889657 JB |
4291 | } |
4292 | ||
4293 | /* Contribute ELT to the mode line for window W. | |
4294 | How it translates into text depends on its data type. | |
4295 | ||
4296 | VPOS is the position of the mode line being displayed. | |
4297 | ||
44fa5b1e | 4298 | HPOS is the position (absolute on frame) where this element's text |
a2889657 JB |
4299 | should start. The output is truncated automatically at the right |
4300 | edge of window W. | |
4301 | ||
4302 | DEPTH is the depth in recursion. It is used to prevent | |
4303 | infinite recursion here. | |
4304 | ||
4305 | MINENDCOL is the hpos before which the element may not end. | |
4306 | The element is padded at the right with spaces if nec | |
4307 | to reach this column. | |
4308 | ||
4309 | MAXENDCOL is the hpos past which this element may not extend. | |
4310 | If MINENDCOL is > MAXENDCOL, MINENDCOL takes priority. | |
4311 | (This is necessary to make nested padding and truncation work.) | |
4312 | ||
4313 | Returns the hpos of the end of the text generated by ELT. | |
4314 | The next element will receive that value as its HPOS arg, | |
4315 | so as to concatenate the elements. */ | |
4316 | ||
4317 | static int | |
4318 | display_mode_element (w, vpos, hpos, depth, minendcol, maxendcol, elt) | |
4319 | struct window *w; | |
4320 | register int vpos, hpos; | |
4321 | int depth; | |
4322 | int minendcol; | |
4323 | register int maxendcol; | |
4324 | register Lisp_Object elt; | |
4325 | { | |
4326 | tail_recurse: | |
4327 | if (depth > 10) | |
4328 | goto invalid; | |
4329 | ||
4330 | depth++; | |
4331 | ||
0220c518 | 4332 | switch (SWITCH_ENUM_CAST (XTYPE (elt))) |
a2889657 JB |
4333 | { |
4334 | case Lisp_String: | |
4335 | { | |
4336 | /* A string: output it and check for %-constructs within it. */ | |
4337 | register unsigned char c; | |
4338 | register unsigned char *this = XSTRING (elt)->data; | |
4339 | ||
4340 | while (hpos < maxendcol && *this) | |
4341 | { | |
4342 | unsigned char *last = this; | |
4343 | while ((c = *this++) != '\0' && c != '%') | |
4344 | ; | |
4345 | if (this - 1 != last) | |
4346 | { | |
4347 | register int lim = --this - last + hpos; | |
d39b6696 KH |
4348 | if (frame_title_ptr) |
4349 | hpos = store_frame_title (last, hpos, min (lim, maxendcol)); | |
4350 | else | |
4351 | hpos = display_string (w, vpos, last, -1, hpos, 0, 1, | |
0a9dc68b RS |
4352 | hpos, min (lim, maxendcol), |
4353 | STRING_MULTIBYTE (elt)); | |
a2889657 JB |
4354 | } |
4355 | else /* c == '%' */ | |
4356 | { | |
766525bc | 4357 | register int minendcol; |
a2889657 JB |
4358 | register int spec_width = 0; |
4359 | ||
4360 | /* We can't allow -ve args due to the "%-" construct */ | |
4361 | /* Argument specifies minwidth but not maxwidth | |
4362 | (maxwidth can be specified by | |
4363 | (<negative-number> . <stuff>) mode-line elements) */ | |
4364 | ||
4365 | while ((c = *this++) >= '0' && c <= '9') | |
4366 | { | |
4367 | spec_width = spec_width * 10 + (c - '0'); | |
4368 | } | |
4369 | ||
766525bc RS |
4370 | minendcol = hpos + spec_width; |
4371 | if (minendcol > maxendcol) | |
4372 | { | |
4373 | spec_width = maxendcol - hpos; | |
4374 | minendcol = maxendcol; | |
4375 | } | |
a2889657 JB |
4376 | |
4377 | if (c == 'M') | |
4378 | hpos = display_mode_element (w, vpos, hpos, depth, | |
4379 | spec_width, maxendcol, | |
4380 | Vglobal_mode_string); | |
4381 | else if (c != 0) | |
d39b6696 | 4382 | { |
766525bc RS |
4383 | char *spec = decode_mode_spec (w, c, spec_width, |
4384 | maxendcol - hpos); | |
d39b6696 | 4385 | if (frame_title_ptr) |
766525bc | 4386 | hpos = store_frame_title (spec, minendcol, maxendcol); |
d39b6696 KH |
4387 | else |
4388 | hpos = display_string (w, vpos, spec, -1, | |
4389 | hpos, 0, 1, | |
a3788d53 | 4390 | minendcol, maxendcol, -1); |
d39b6696 | 4391 | } |
a2889657 JB |
4392 | } |
4393 | } | |
4394 | } | |
4395 | break; | |
4396 | ||
4397 | case Lisp_Symbol: | |
4398 | /* A symbol: process the value of the symbol recursively | |
4399 | as if it appeared here directly. Avoid error if symbol void. | |
4400 | Special case: if value of symbol is a string, output the string | |
4401 | literally. */ | |
4402 | { | |
4403 | register Lisp_Object tem; | |
4404 | tem = Fboundp (elt); | |
265a9e55 | 4405 | if (!NILP (tem)) |
a2889657 JB |
4406 | { |
4407 | tem = Fsymbol_value (elt); | |
4408 | /* If value is a string, output that string literally: | |
4409 | don't check for % within it. */ | |
e24c997d | 4410 | if (STRINGP (tem)) |
d39b6696 KH |
4411 | { |
4412 | if (frame_title_ptr) | |
4413 | hpos = store_frame_title (XSTRING (tem)->data, | |
4414 | minendcol, maxendcol); | |
4415 | else | |
4416 | hpos = display_string (w, vpos, XSTRING (tem)->data, | |
fc932ac6 | 4417 | STRING_BYTES (XSTRING (tem)), |
0a9dc68b RS |
4418 | hpos, 0, 1, minendcol, maxendcol, |
4419 | STRING_MULTIBYTE (tem)); | |
d39b6696 | 4420 | } |
a2889657 JB |
4421 | /* Give up right away for nil or t. */ |
4422 | else if (!EQ (tem, elt)) | |
4423 | { elt = tem; goto tail_recurse; } | |
4424 | } | |
4425 | } | |
4426 | break; | |
4427 | ||
4428 | case Lisp_Cons: | |
4429 | { | |
4430 | register Lisp_Object car, tem; | |
4431 | ||
4432 | /* A cons cell: three distinct cases. | |
4433 | If first element is a string or a cons, process all the elements | |
4434 | and effectively concatenate them. | |
4435 | If first element is a negative number, truncate displaying cdr to | |
4436 | at most that many characters. If positive, pad (with spaces) | |
4437 | to at least that many characters. | |
4438 | If first element is a symbol, process the cadr or caddr recursively | |
4439 | according to whether the symbol's value is non-nil or nil. */ | |
4440 | car = XCONS (elt)->car; | |
e24c997d | 4441 | if (SYMBOLP (car)) |
a2889657 JB |
4442 | { |
4443 | tem = Fboundp (car); | |
4444 | elt = XCONS (elt)->cdr; | |
e24c997d | 4445 | if (!CONSP (elt)) |
a2889657 JB |
4446 | goto invalid; |
4447 | /* elt is now the cdr, and we know it is a cons cell. | |
4448 | Use its car if CAR has a non-nil value. */ | |
265a9e55 | 4449 | if (!NILP (tem)) |
a2889657 JB |
4450 | { |
4451 | tem = Fsymbol_value (car); | |
265a9e55 | 4452 | if (!NILP (tem)) |
a2889657 JB |
4453 | { elt = XCONS (elt)->car; goto tail_recurse; } |
4454 | } | |
4455 | /* Symbol's value is nil (or symbol is unbound) | |
4456 | Get the cddr of the original list | |
4457 | and if possible find the caddr and use that. */ | |
4458 | elt = XCONS (elt)->cdr; | |
265a9e55 | 4459 | if (NILP (elt)) |
a2889657 | 4460 | break; |
e24c997d | 4461 | else if (!CONSP (elt)) |
a2889657 JB |
4462 | goto invalid; |
4463 | elt = XCONS (elt)->car; | |
4464 | goto tail_recurse; | |
4465 | } | |
e24c997d | 4466 | else if (INTEGERP (car)) |
a2889657 JB |
4467 | { |
4468 | register int lim = XINT (car); | |
4469 | elt = XCONS (elt)->cdr; | |
4470 | if (lim < 0) | |
4471 | /* Negative int means reduce maximum width. | |
4472 | DO NOT change MINENDCOL here! | |
4473 | (20 -10 . foo) should truncate foo to 10 col | |
4474 | and then pad to 20. */ | |
4475 | maxendcol = min (maxendcol, hpos - lim); | |
4476 | else if (lim > 0) | |
4477 | { | |
4478 | /* Padding specified. Don't let it be more than | |
4479 | current maximum. */ | |
4480 | lim += hpos; | |
4481 | if (lim > maxendcol) | |
4482 | lim = maxendcol; | |
4483 | /* If that's more padding than already wanted, queue it. | |
4484 | But don't reduce padding already specified even if | |
4485 | that is beyond the current truncation point. */ | |
4486 | if (lim > minendcol) | |
4487 | minendcol = lim; | |
4488 | } | |
4489 | goto tail_recurse; | |
4490 | } | |
e24c997d | 4491 | else if (STRINGP (car) || CONSP (car)) |
a2889657 JB |
4492 | { |
4493 | register int limit = 50; | |
4494 | /* LIMIT is to protect against circular lists. */ | |
e24c997d | 4495 | while (CONSP (elt) && --limit > 0 |
a2889657 JB |
4496 | && hpos < maxendcol) |
4497 | { | |
4498 | hpos = display_mode_element (w, vpos, hpos, depth, | |
4499 | hpos, maxendcol, | |
4500 | XCONS (elt)->car); | |
4501 | elt = XCONS (elt)->cdr; | |
4502 | } | |
4503 | } | |
4504 | } | |
4505 | break; | |
4506 | ||
4507 | default: | |
4508 | invalid: | |
d39b6696 KH |
4509 | if (frame_title_ptr) |
4510 | hpos = store_frame_title ("*invalid*", minendcol, maxendcol); | |
4511 | else | |
4512 | hpos = display_string (w, vpos, "*invalid*", -1, hpos, 0, 1, | |
a3788d53 | 4513 | minendcol, maxendcol, 0); |
d39b6696 | 4514 | return hpos; |
a2889657 JB |
4515 | } |
4516 | ||
a2889657 | 4517 | if (minendcol > hpos) |
d39b6696 KH |
4518 | if (frame_title_ptr) |
4519 | hpos = store_frame_title ("", minendcol, maxendcol); | |
4520 | else | |
a3788d53 RS |
4521 | hpos = display_string (w, vpos, "", 0, hpos, |
4522 | 0, 1, minendcol, maxendcol, 0); | |
a2889657 JB |
4523 | return hpos; |
4524 | } | |
4525 | \f | |
766525bc RS |
4526 | /* Write a null-terminated, right justified decimal representation of |
4527 | the positive integer D to BUF using a minimal field width WIDTH. */ | |
4528 | ||
4529 | static void | |
4530 | pint2str (buf, width, d) | |
4531 | register char *buf; | |
4532 | register int width; | |
4533 | register int d; | |
4534 | { | |
4535 | register char *p = buf; | |
4536 | ||
4537 | if (d <= 0) | |
4538 | *p++ = '0'; | |
4539 | else | |
4540 | while (d > 0) | |
4541 | { | |
4542 | *p++ = d % 10 + '0'; | |
4543 | d /= 10; | |
4544 | } | |
4545 | for (width -= (int) (p - buf); width > 0; --width) *p++ = ' '; | |
4546 | *p-- = '\0'; | |
4547 | while (p > buf) | |
4548 | { | |
4549 | d = *buf; | |
4550 | *buf++ = *p; | |
4551 | *p-- = d; | |
4552 | } | |
4553 | } | |
4554 | ||
1c9241f5 KH |
4555 | /* Set a mnemonic character for CODING_SYSTEM (Lisp symbol) in BUF. |
4556 | If EOL_FLAG is 1, set also a mnemonic character for end-of-line | |
4557 | type of CODING_SYSTEM. Return updated pointer into BUF. */ | |
4558 | ||
4559 | static char * | |
4560 | decode_mode_spec_coding (coding_system, buf, eol_flag) | |
4561 | Lisp_Object coding_system; | |
4562 | register char *buf; | |
4563 | int eol_flag; | |
4564 | { | |
1e1078d6 | 4565 | Lisp_Object val; |
916848d8 | 4566 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
1e1078d6 RS |
4567 | |
4568 | val = coding_system; | |
1c9241f5 KH |
4569 | |
4570 | if (NILP (val)) /* Not yet decided. */ | |
4571 | { | |
916848d8 RS |
4572 | if (multibyte) |
4573 | *buf++ = '-'; | |
21e989e3 RS |
4574 | if (eol_flag) |
4575 | *buf++ = eol_mnemonic_undecided; | |
1e1078d6 | 4576 | /* Don't mention EOL conversion if it isn't decided. */ |
1c9241f5 KH |
4577 | } |
4578 | else | |
4579 | { | |
1e1078d6 RS |
4580 | Lisp_Object eolvalue; |
4581 | ||
4582 | eolvalue = Fget (coding_system, Qeol_type); | |
4583 | ||
1c9241f5 | 4584 | while (!NILP (val) && SYMBOLP (val)) |
1e1078d6 RS |
4585 | { |
4586 | val = Fget (val, Qcoding_system); | |
4587 | if (NILP (eolvalue)) | |
b070c1d7 | 4588 | eolvalue = Fget (val, Qeol_type); |
1e1078d6 RS |
4589 | } |
4590 | ||
916848d8 RS |
4591 | if (multibyte) |
4592 | *buf++ = XFASTINT (XVECTOR (val)->contents[1]); | |
4593 | ||
1c9241f5 KH |
4594 | if (eol_flag) |
4595 | { | |
1e1078d6 RS |
4596 | /* The EOL conversion we are using. */ |
4597 | int eoltype; | |
4598 | /* The EOL conversion that is normal on this system. */ | |
4599 | ||
4600 | if (NILP (eolvalue)) /* Not yet decided. */ | |
4601 | eoltype = eol_mnemonic_undecided; | |
4602 | else if (VECTORP (eolvalue)) /* Not yet decided. */ | |
4603 | eoltype = eol_mnemonic_undecided; | |
4604 | else /* INTEGERP (eolvalue) -- 0:LF, 1:CRLF, 2:CR */ | |
4605 | eoltype = (XFASTINT (eolvalue) == 0 | |
4606 | ? eol_mnemonic_unix | |
4607 | : (XFASTINT (eolvalue) == 1 | |
4608 | ? eol_mnemonic_dos : eol_mnemonic_mac)); | |
4609 | ||
4610 | /* Mention the EOL conversion if it is not the usual one. */ | |
4611 | *buf++ = eoltype; | |
1c9241f5 KH |
4612 | } |
4613 | } | |
4614 | return buf; | |
4615 | } | |
4616 | ||
a2889657 | 4617 | /* Return a string for the output of a mode line %-spec for window W, |
766525bc RS |
4618 | generated by character C. SPEC_WIDTH is the field width when |
4619 | padding to the left (%c, %l). The value returned from this | |
4620 | function will later be truncated to width MAXWIDTH. */ | |
a2889657 | 4621 | |
11e82b76 JB |
4622 | static char lots_of_dashes[] = "--------------------------------------------------------------------------------------------------------------------------------------------"; |
4623 | ||
a2889657 | 4624 | static char * |
766525bc | 4625 | decode_mode_spec (w, c, spec_width, maxwidth) |
a2889657 JB |
4626 | struct window *w; |
4627 | register char c; | |
766525bc | 4628 | register int spec_width; |
a2889657 JB |
4629 | register int maxwidth; |
4630 | { | |
0b67772d | 4631 | Lisp_Object obj; |
44fa5b1e JB |
4632 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
4633 | char *decode_mode_spec_buf = (char *) FRAME_TEMP_GLYPHS (f)->total_contents; | |
d39b6696 | 4634 | struct buffer *b = XBUFFER (w->buffer); |
a2889657 | 4635 | |
0b67772d | 4636 | obj = Qnil; |
44fa5b1e JB |
4637 | if (maxwidth > FRAME_WIDTH (f)) |
4638 | maxwidth = FRAME_WIDTH (f); | |
a2889657 JB |
4639 | |
4640 | switch (c) | |
4641 | { | |
1af9f229 RS |
4642 | case '*': |
4643 | if (!NILP (b->read_only)) | |
4644 | return "%"; | |
4645 | if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
4646 | return "*"; | |
4647 | return "-"; | |
4648 | ||
4649 | case '+': | |
4650 | /* This differs from %* only for a modified read-only buffer. */ | |
4651 | if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
4652 | return "*"; | |
4653 | if (!NILP (b->read_only)) | |
4654 | return "%"; | |
4655 | return "-"; | |
4656 | ||
4657 | case '&': | |
4658 | /* This differs from %* in ignoring read-only-ness. */ | |
4659 | if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
4660 | return "*"; | |
4661 | return "-"; | |
4662 | ||
4663 | case '%': | |
4664 | return "%"; | |
4665 | ||
4666 | case '[': | |
4667 | { | |
4668 | int i; | |
4669 | char *p; | |
4670 | ||
4671 | if (command_loop_level > 5) | |
4672 | return "[[[... "; | |
4673 | p = decode_mode_spec_buf; | |
4674 | for (i = 0; i < command_loop_level; i++) | |
4675 | *p++ = '['; | |
4676 | *p = 0; | |
4677 | return decode_mode_spec_buf; | |
4678 | } | |
4679 | ||
4680 | case ']': | |
4681 | { | |
4682 | int i; | |
4683 | char *p; | |
4684 | ||
4685 | if (command_loop_level > 5) | |
4686 | return " ...]]]"; | |
4687 | p = decode_mode_spec_buf; | |
4688 | for (i = 0; i < command_loop_level; i++) | |
4689 | *p++ = ']'; | |
4690 | *p = 0; | |
4691 | return decode_mode_spec_buf; | |
4692 | } | |
4693 | ||
4694 | case '-': | |
4695 | { | |
4696 | register char *p; | |
4697 | register int i; | |
4698 | ||
4699 | if (maxwidth < sizeof (lots_of_dashes)) | |
4700 | return lots_of_dashes; | |
4701 | else | |
4702 | { | |
4703 | for (p = decode_mode_spec_buf, i = maxwidth; i > 0; i--) | |
4704 | *p++ = '-'; | |
4705 | *p = '\0'; | |
4706 | } | |
4707 | return decode_mode_spec_buf; | |
4708 | } | |
4709 | ||
a2889657 | 4710 | case 'b': |
d39b6696 | 4711 | obj = b->name; |
a2889657 | 4712 | #if 0 |
fc932ac6 | 4713 | if (maxwidth >= 3 && STRING_BYTES (XSTRING (obj)) > maxwidth) |
a2889657 JB |
4714 | { |
4715 | bcopy (XSTRING (obj)->data, decode_mode_spec_buf, maxwidth - 1); | |
4716 | decode_mode_spec_buf[maxwidth - 1] = '\\'; | |
4717 | decode_mode_spec_buf[maxwidth] = '\0'; | |
4718 | return decode_mode_spec_buf; | |
4719 | } | |
4720 | #endif | |
4721 | break; | |
4722 | ||
1af9f229 RS |
4723 | case 'c': |
4724 | { | |
4725 | int col = current_column (); | |
4726 | XSETFASTINT (w->column_number_displayed, col); | |
766525bc | 4727 | pint2str (decode_mode_spec_buf, spec_width, col); |
1af9f229 RS |
4728 | return decode_mode_spec_buf; |
4729 | } | |
4730 | ||
4731 | case 'F': | |
4732 | /* %F displays the frame name. */ | |
261bfd0e EZ |
4733 | /* Systems that can only display a single frame at a time should |
4734 | NOT replace the frame name with the (constant) frame title, | |
4735 | since then they won't be able to tell which frame is that. */ | |
4736 | if (FRAME_WINDOW_P (f) && !NILP (f->title)) | |
95184b48 | 4737 | return (char *) XSTRING (f->title)->data; |
fd8ff63d | 4738 | if (f->explicit_name || ! FRAME_WINDOW_P (f)) |
95184b48 | 4739 | return (char *) XSTRING (f->name)->data; |
9c6da96f | 4740 | return "Emacs"; |
1af9f229 | 4741 | |
a2889657 | 4742 | case 'f': |
d39b6696 | 4743 | obj = b->filename; |
a2889657 | 4744 | #if 0 |
265a9e55 | 4745 | if (NILP (obj)) |
a2889657 | 4746 | return "[none]"; |
fc932ac6 | 4747 | else if (STRINGP (obj) && STRING_BYTES (XSTRING (obj)) > maxwidth) |
a2889657 JB |
4748 | { |
4749 | bcopy ("...", decode_mode_spec_buf, 3); | |
fc932ac6 | 4750 | bcopy (XSTRING (obj)->data + STRING_BYTES (XSTRING (obj)) - maxwidth + 3, |
a2889657 JB |
4751 | decode_mode_spec_buf + 3, maxwidth - 3); |
4752 | return decode_mode_spec_buf; | |
4753 | } | |
4754 | #endif | |
4755 | break; | |
4756 | ||
aa6d10fa RS |
4757 | case 'l': |
4758 | { | |
12adba34 RS |
4759 | int startpos = XMARKER (w->start)->charpos; |
4760 | int startpos_byte = marker_byte_position (w->start); | |
4761 | int line, linepos, linepos_byte, topline; | |
aa6d10fa RS |
4762 | int nlines, junk; |
4763 | Lisp_Object tem; | |
4764 | int height = XFASTINT (w->height); | |
4765 | ||
4766 | /* If we decided that this buffer isn't suitable for line numbers, | |
4767 | don't forget that too fast. */ | |
4768 | if (EQ (w->base_line_pos, w->buffer)) | |
766525bc | 4769 | goto no_value; |
5300fd39 RS |
4770 | /* But do forget it, if the window shows a different buffer now. */ |
4771 | else if (BUFFERP (w->base_line_pos)) | |
4772 | w->base_line_pos = Qnil; | |
aa6d10fa RS |
4773 | |
4774 | /* If the buffer is very big, don't waste time. */ | |
d39b6696 | 4775 | if (BUF_ZV (b) - BUF_BEGV (b) > line_number_display_limit) |
aa6d10fa RS |
4776 | { |
4777 | w->base_line_pos = Qnil; | |
4778 | w->base_line_number = Qnil; | |
766525bc | 4779 | goto no_value; |
aa6d10fa RS |
4780 | } |
4781 | ||
4782 | if (!NILP (w->base_line_number) | |
4783 | && !NILP (w->base_line_pos) | |
12adba34 | 4784 | && XFASTINT (w->base_line_pos) <= startpos) |
aa6d10fa RS |
4785 | { |
4786 | line = XFASTINT (w->base_line_number); | |
4787 | linepos = XFASTINT (w->base_line_pos); | |
12adba34 | 4788 | linepos_byte = buf_charpos_to_bytepos (b, linepos); |
aa6d10fa RS |
4789 | } |
4790 | else | |
4791 | { | |
4792 | line = 1; | |
d39b6696 | 4793 | linepos = BUF_BEGV (b); |
12adba34 | 4794 | linepos_byte = BUF_BEGV_BYTE (b); |
aa6d10fa RS |
4795 | } |
4796 | ||
4797 | /* Count lines from base line to window start position. */ | |
12adba34 RS |
4798 | nlines = display_count_lines (linepos, linepos_byte, |
4799 | startpos_byte, | |
4800 | startpos, &junk); | |
aa6d10fa RS |
4801 | |
4802 | topline = nlines + line; | |
4803 | ||
4804 | /* Determine a new base line, if the old one is too close | |
4805 | or too far away, or if we did not have one. | |
4806 | "Too close" means it's plausible a scroll-down would | |
4807 | go back past it. */ | |
d39b6696 | 4808 | if (startpos == BUF_BEGV (b)) |
aa6d10fa | 4809 | { |
c2213350 KH |
4810 | XSETFASTINT (w->base_line_number, topline); |
4811 | XSETFASTINT (w->base_line_pos, BUF_BEGV (b)); | |
aa6d10fa RS |
4812 | } |
4813 | else if (nlines < height + 25 || nlines > height * 3 + 50 | |
d39b6696 | 4814 | || linepos == BUF_BEGV (b)) |
aa6d10fa | 4815 | { |
d39b6696 | 4816 | int limit = BUF_BEGV (b); |
12adba34 | 4817 | int limit_byte = BUF_BEGV_BYTE (b); |
aa6d10fa RS |
4818 | int position; |
4819 | int distance = (height * 2 + 30) * 200; | |
4820 | ||
4821 | if (startpos - distance > limit) | |
12adba34 RS |
4822 | { |
4823 | limit = startpos - distance; | |
4824 | limit_byte = CHAR_TO_BYTE (limit); | |
4825 | } | |
aa6d10fa | 4826 | |
12adba34 RS |
4827 | nlines = display_count_lines (startpos, startpos_byte, |
4828 | limit_byte, | |
4829 | - (height * 2 + 30), | |
aa6d10fa RS |
4830 | &position); |
4831 | /* If we couldn't find the lines we wanted within | |
4832 | 200 chars per line, | |
4833 | give up on line numbers for this window. */ | |
12adba34 | 4834 | if (position == limit_byte && limit == startpos - distance) |
aa6d10fa RS |
4835 | { |
4836 | w->base_line_pos = w->buffer; | |
4837 | w->base_line_number = Qnil; | |
766525bc | 4838 | goto no_value; |
aa6d10fa RS |
4839 | } |
4840 | ||
c2213350 | 4841 | XSETFASTINT (w->base_line_number, topline - nlines); |
12adba34 | 4842 | XSETFASTINT (w->base_line_pos, BYTE_TO_CHAR (position)); |
aa6d10fa RS |
4843 | } |
4844 | ||
4845 | /* Now count lines from the start pos to point. */ | |
12adba34 RS |
4846 | nlines = display_count_lines (startpos, startpos_byte, |
4847 | PT_BYTE, PT, &junk); | |
aa6d10fa RS |
4848 | |
4849 | /* Record that we did display the line number. */ | |
4850 | line_number_displayed = 1; | |
4851 | ||
4852 | /* Make the string to show. */ | |
766525bc | 4853 | pint2str (decode_mode_spec_buf, spec_width, topline + nlines); |
aa6d10fa | 4854 | return decode_mode_spec_buf; |
766525bc RS |
4855 | no_value: |
4856 | { | |
4857 | char* p = decode_mode_spec_buf; | |
4858 | for (spec_width -= 2; spec_width > 0; --spec_width) *p++ = ' '; | |
4859 | strcpy (p, "??"); | |
4860 | return decode_mode_spec_buf; | |
4861 | } | |
aa6d10fa RS |
4862 | } |
4863 | break; | |
4864 | ||
a2889657 | 4865 | case 'm': |
d39b6696 | 4866 | obj = b->mode_name; |
a2889657 JB |
4867 | break; |
4868 | ||
4869 | case 'n': | |
d39b6696 | 4870 | if (BUF_BEGV (b) > BUF_BEG (b) || BUF_ZV (b) < BUF_Z (b)) |
a2889657 JB |
4871 | return " Narrow"; |
4872 | break; | |
4873 | ||
a2889657 JB |
4874 | case 'p': |
4875 | { | |
4876 | int pos = marker_position (w->start); | |
d39b6696 | 4877 | int total = BUF_ZV (b) - BUF_BEGV (b); |
a2889657 | 4878 | |
d39b6696 | 4879 | if (XFASTINT (w->window_end_pos) <= BUF_Z (b) - BUF_ZV (b)) |
a2889657 | 4880 | { |
d39b6696 | 4881 | if (pos <= BUF_BEGV (b)) |
a2889657 JB |
4882 | return "All"; |
4883 | else | |
4884 | return "Bottom"; | |
4885 | } | |
d39b6696 | 4886 | else if (pos <= BUF_BEGV (b)) |
a2889657 JB |
4887 | return "Top"; |
4888 | else | |
4889 | { | |
3c7d31b9 RS |
4890 | if (total > 1000000) |
4891 | /* Do it differently for a large value, to avoid overflow. */ | |
4892 | total = ((pos - BUF_BEGV (b)) + (total / 100) - 1) / (total / 100); | |
4893 | else | |
4894 | total = ((pos - BUF_BEGV (b)) * 100 + total - 1) / total; | |
a2889657 JB |
4895 | /* We can't normally display a 3-digit number, |
4896 | so get us a 2-digit number that is close. */ | |
4897 | if (total == 100) | |
4898 | total = 99; | |
4899 | sprintf (decode_mode_spec_buf, "%2d%%", total); | |
4900 | return decode_mode_spec_buf; | |
4901 | } | |
4902 | } | |
4903 | ||
8ffcb79f RS |
4904 | /* Display percentage of size above the bottom of the screen. */ |
4905 | case 'P': | |
4906 | { | |
4907 | int toppos = marker_position (w->start); | |
d39b6696 KH |
4908 | int botpos = BUF_Z (b) - XFASTINT (w->window_end_pos); |
4909 | int total = BUF_ZV (b) - BUF_BEGV (b); | |
8ffcb79f | 4910 | |
d39b6696 | 4911 | if (botpos >= BUF_ZV (b)) |
8ffcb79f | 4912 | { |
d39b6696 | 4913 | if (toppos <= BUF_BEGV (b)) |
8ffcb79f RS |
4914 | return "All"; |
4915 | else | |
4916 | return "Bottom"; | |
4917 | } | |
4918 | else | |
4919 | { | |
3c7d31b9 RS |
4920 | if (total > 1000000) |
4921 | /* Do it differently for a large value, to avoid overflow. */ | |
4922 | total = ((botpos - BUF_BEGV (b)) + (total / 100) - 1) / (total / 100); | |
4923 | else | |
4924 | total = ((botpos - BUF_BEGV (b)) * 100 + total - 1) / total; | |
8ffcb79f RS |
4925 | /* We can't normally display a 3-digit number, |
4926 | so get us a 2-digit number that is close. */ | |
4927 | if (total == 100) | |
4928 | total = 99; | |
d39b6696 | 4929 | if (toppos <= BUF_BEGV (b)) |
8ffcb79f RS |
4930 | sprintf (decode_mode_spec_buf, "Top%2d%%", total); |
4931 | else | |
4932 | sprintf (decode_mode_spec_buf, "%2d%%", total); | |
4933 | return decode_mode_spec_buf; | |
4934 | } | |
4935 | } | |
4936 | ||
1af9f229 RS |
4937 | case 's': |
4938 | /* status of process */ | |
4939 | obj = Fget_buffer_process (w->buffer); | |
4940 | if (NILP (obj)) | |
4941 | return "no process"; | |
4942 | #ifdef subprocesses | |
4943 | obj = Fsymbol_name (Fprocess_status (obj)); | |
4944 | #endif | |
4945 | break; | |
d39b6696 | 4946 | |
1af9f229 RS |
4947 | case 't': /* indicate TEXT or BINARY */ |
4948 | #ifdef MODE_LINE_BINARY_TEXT | |
4949 | return MODE_LINE_BINARY_TEXT (b); | |
4950 | #else | |
4951 | return "T"; | |
4952 | #endif | |
1c9241f5 KH |
4953 | |
4954 | case 'z': | |
4955 | /* coding-system (not including end-of-line format) */ | |
4956 | case 'Z': | |
4957 | /* coding-system (including end-of-line type) */ | |
4958 | { | |
4959 | int eol_flag = (c == 'Z'); | |
539b4d41 | 4960 | char *p = decode_mode_spec_buf; |
1c9241f5 | 4961 | |
d30e754b | 4962 | if (! FRAME_WINDOW_P (f)) |
1c9241f5 | 4963 | { |
11c52c4f RS |
4964 | /* No need to mention EOL here--the terminal never needs |
4965 | to do EOL conversion. */ | |
4966 | p = decode_mode_spec_coding (keyboard_coding.symbol, p, 0); | |
4967 | p = decode_mode_spec_coding (terminal_coding.symbol, p, 0); | |
1c9241f5 | 4968 | } |
f13c925f | 4969 | p = decode_mode_spec_coding (b->buffer_file_coding_system, |
539b4d41 | 4970 | p, eol_flag); |
f13c925f | 4971 | |
11c52c4f | 4972 | #if 0 /* This proves to be annoying; I think we can do without. -- rms. */ |
1c9241f5 KH |
4973 | #ifdef subprocesses |
4974 | obj = Fget_buffer_process (Fcurrent_buffer ()); | |
4975 | if (PROCESSP (obj)) | |
4976 | { | |
4977 | p = decode_mode_spec_coding (XPROCESS (obj)->decode_coding_system, | |
4978 | p, eol_flag); | |
4979 | p = decode_mode_spec_coding (XPROCESS (obj)->encode_coding_system, | |
4980 | p, eol_flag); | |
4981 | } | |
4982 | #endif /* subprocesses */ | |
11c52c4f | 4983 | #endif /* 0 */ |
1c9241f5 KH |
4984 | *p = 0; |
4985 | return decode_mode_spec_buf; | |
4986 | } | |
a2889657 | 4987 | } |
d39b6696 | 4988 | |
e24c997d | 4989 | if (STRINGP (obj)) |
a2889657 JB |
4990 | return (char *) XSTRING (obj)->data; |
4991 | else | |
4992 | return ""; | |
4993 | } | |
59b49f63 | 4994 | \f |
12adba34 RS |
4995 | /* Count up to COUNT lines starting from START / START_BYTE. |
4996 | But don't go beyond LIMIT_BYTE. | |
4997 | Return the number of lines thus found (always nonnegative). | |
59b49f63 | 4998 | |
12adba34 | 4999 | Set *BYTE_POS_PTR to 1 if we found COUNT lines, 0 if we hit LIMIT. */ |
59b49f63 RS |
5000 | |
5001 | static int | |
12adba34 RS |
5002 | display_count_lines (start, start_byte, limit_byte, count, byte_pos_ptr) |
5003 | int start, start_byte, limit_byte, count; | |
5004 | int *byte_pos_ptr; | |
59b49f63 | 5005 | { |
59b49f63 RS |
5006 | register unsigned char *cursor; |
5007 | unsigned char *base; | |
5008 | ||
5009 | register int ceiling; | |
5010 | register unsigned char *ceiling_addr; | |
12adba34 | 5011 | int orig_count = count; |
59b49f63 RS |
5012 | |
5013 | /* If we are not in selective display mode, | |
5014 | check only for newlines. */ | |
12adba34 RS |
5015 | int selective_display = (!NILP (current_buffer->selective_display) |
5016 | && !INTEGERP (current_buffer->selective_display)); | |
59b49f63 RS |
5017 | |
5018 | if (count > 0) | |
12adba34 RS |
5019 | { |
5020 | while (start_byte < limit_byte) | |
5021 | { | |
5022 | ceiling = BUFFER_CEILING_OF (start_byte); | |
5023 | ceiling = min (limit_byte - 1, ceiling); | |
5024 | ceiling_addr = BYTE_POS_ADDR (ceiling) + 1; | |
5025 | base = (cursor = BYTE_POS_ADDR (start_byte)); | |
5026 | while (1) | |
5027 | { | |
5028 | if (selective_display) | |
5029 | while (*cursor != '\n' && *cursor != 015 && ++cursor != ceiling_addr) | |
5030 | ; | |
5031 | else | |
5032 | while (*cursor != '\n' && ++cursor != ceiling_addr) | |
5033 | ; | |
5034 | ||
5035 | if (cursor != ceiling_addr) | |
5036 | { | |
5037 | if (--count == 0) | |
5038 | { | |
5039 | start_byte += cursor - base + 1; | |
5040 | *byte_pos_ptr = start_byte; | |
5041 | return orig_count; | |
5042 | } | |
5043 | else | |
5044 | if (++cursor == ceiling_addr) | |
5045 | break; | |
5046 | } | |
5047 | else | |
5048 | break; | |
5049 | } | |
5050 | start_byte += cursor - base; | |
5051 | } | |
5052 | } | |
59b49f63 RS |
5053 | else |
5054 | { | |
12adba34 RS |
5055 | while (start_byte > limit_byte) |
5056 | { | |
5057 | ceiling = BUFFER_FLOOR_OF (start_byte - 1); | |
5058 | ceiling = max (limit_byte, ceiling); | |
5059 | ceiling_addr = BYTE_POS_ADDR (ceiling) - 1; | |
5060 | base = (cursor = BYTE_POS_ADDR (start_byte - 1) + 1); | |
59b49f63 RS |
5061 | while (1) |
5062 | { | |
12adba34 RS |
5063 | if (selective_display) |
5064 | while (--cursor != ceiling_addr | |
5065 | && *cursor != '\n' && *cursor != 015) | |
5066 | ; | |
5067 | else | |
5068 | while (--cursor != ceiling_addr && *cursor != '\n') | |
5069 | ; | |
5070 | ||
59b49f63 RS |
5071 | if (cursor != ceiling_addr) |
5072 | { | |
5073 | if (++count == 0) | |
5074 | { | |
12adba34 RS |
5075 | start_byte += cursor - base + 1; |
5076 | *byte_pos_ptr = start_byte; | |
5077 | /* When scanning backwards, we should | |
5078 | not count the newline posterior to which we stop. */ | |
5079 | return - orig_count - 1; | |
59b49f63 RS |
5080 | } |
5081 | } | |
5082 | else | |
5083 | break; | |
5084 | } | |
12adba34 RS |
5085 | /* Here we add 1 to compensate for the last decrement |
5086 | of CURSOR, which took it past the valid range. */ | |
5087 | start_byte += cursor - base + 1; | |
59b49f63 RS |
5088 | } |
5089 | } | |
5090 | ||
12adba34 | 5091 | *byte_pos_ptr = limit_byte; |
aa6d10fa | 5092 | |
12adba34 RS |
5093 | if (count < 0) |
5094 | return - orig_count + count; | |
5095 | return orig_count - count; | |
aa6d10fa | 5096 | |
12adba34 | 5097 | } |
a2889657 JB |
5098 | \f |
5099 | /* Display STRING on one line of window W, starting at HPOS. | |
5100 | Display at position VPOS. Caller should have done get_display_line. | |
11e82b76 | 5101 | If VPOS == -1, display it as the current frame's title. |
90adcf20 | 5102 | LENGTH is the length of STRING, or -1 meaning STRING is null-terminated. |
a2889657 JB |
5103 | |
5104 | TRUNCATE is GLYPH to display at end if truncated. Zero for none. | |
5105 | ||
5106 | MINCOL is the first column ok to end at. (Pad with spaces to this col.) | |
5107 | MAXCOL is the last column ok to end at. Truncate here. | |
5108 | -1 for MINCOL or MAXCOL means no explicit minimum or maximum. | |
44fa5b1e | 5109 | Both count from the left edge of the frame, as does HPOS. |
a2889657 JB |
5110 | The right edge of W is an implicit maximum. |
5111 | If TRUNCATE is nonzero, the implicit maximum is one column before the edge. | |
5112 | ||
278feba9 RS |
5113 | OBEY_WINDOW_WIDTH says to put spaces or vertical bars |
5114 | at the place where the current window ends in this line | |
5115 | and not display anything beyond there. Otherwise, only MAXCOL | |
5116 | controls where to stop output. | |
5117 | ||
a3788d53 RS |
5118 | MULTIBYTE can be 0 meaning do not display multibyte chars, |
5119 | 1 meaning do display them, or -1 meaning obey the current buffer's | |
5120 | value of enable_multibyte_characters. | |
5121 | ||
278feba9 | 5122 | Returns ending hpos. */ |
a2889657 JB |
5123 | |
5124 | static int | |
278feba9 | 5125 | display_string (w, vpos, string, length, hpos, truncate, |
a3788d53 | 5126 | obey_window_width, mincol, maxcol, multibyte) |
a2889657 JB |
5127 | struct window *w; |
5128 | unsigned char *string; | |
90adcf20 | 5129 | int length; |
a2889657 JB |
5130 | int vpos, hpos; |
5131 | GLYPH truncate; | |
278feba9 | 5132 | int obey_window_width; |
a2889657 | 5133 | int mincol, maxcol; |
a3788d53 | 5134 | int multibyte; |
a2889657 JB |
5135 | { |
5136 | register int c; | |
d3413a53 | 5137 | int truncated; |
a2889657 JB |
5138 | register GLYPH *p1; |
5139 | int hscroll = XINT (w->hscroll); | |
253c7d2f | 5140 | int tab_width = XINT (XBUFFER (w->buffer)->tab_width); |
a2889657 JB |
5141 | register GLYPH *start; |
5142 | register GLYPH *end; | |
b1d1124b JB |
5143 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); |
5144 | struct frame_glyphs *desired_glyphs = FRAME_DESIRED_GLYPHS (f); | |
a2889657 JB |
5145 | GLYPH *p1start = desired_glyphs->glyphs[vpos] + hpos; |
5146 | int window_width = XFASTINT (w->width); | |
5147 | ||
5148 | /* Use the standard display table, not the window's display table. | |
5149 | We don't want the mode line in rot13. */ | |
f908610f | 5150 | register struct Lisp_Char_Table *dp = 0; |
efc63ef0 | 5151 | int i; |
a2889657 | 5152 | |
a3788d53 RS |
5153 | if (multibyte == -1) |
5154 | multibyte = !NILP (current_buffer->enable_multibyte_characters); | |
5155 | /* Now multibyte is 1 if we should display multibyte characters. */ | |
5156 | ||
f908610f RS |
5157 | if (DISP_TABLE_P (Vstandard_display_table)) |
5158 | dp = XCHAR_TABLE (Vstandard_display_table); | |
a2889657 | 5159 | |
54ff581a | 5160 | if (tab_width <= 0 || tab_width > 1000) tab_width = 8; |
a2889657 JB |
5161 | |
5162 | p1 = p1start; | |
a27062f0 | 5163 | start = desired_glyphs->glyphs[vpos]; |
a2889657 | 5164 | |
278feba9 | 5165 | if (obey_window_width) |
b1d1124b | 5166 | { |
a27062f0 | 5167 | start += XFASTINT (w->left); |
278feba9 RS |
5168 | end = start + window_width - (truncate != 0); |
5169 | ||
73f194f1 | 5170 | if (!WINDOW_RIGHTMOST_P (w)) |
b1d1124b | 5171 | { |
73f194f1 | 5172 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT (f)) |
278feba9 RS |
5173 | { |
5174 | int i; | |
b1d1124b | 5175 | |
5802e919 | 5176 | for (i = 0; i < FRAME_SCROLL_BAR_COLS (f); i++) |
278feba9 RS |
5177 | *end-- = ' '; |
5178 | } | |
73f194f1 | 5179 | else if (!FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
278feba9 | 5180 | *end-- = '|'; |
b1d1124b | 5181 | } |
b1d1124b | 5182 | } |
a2889657 | 5183 | |
278feba9 RS |
5184 | if (! obey_window_width |
5185 | || (maxcol >= 0 && end - desired_glyphs->glyphs[vpos] > maxcol)) | |
a2889657 | 5186 | end = desired_glyphs->glyphs[vpos] + maxcol; |
278feba9 | 5187 | |
efc63ef0 | 5188 | /* Store 0 in charstart for these columns. */ |
bd5dec8e | 5189 | for (i = (hpos >= 0 ? hpos : 0); i < end - p1start + hpos; i++) |
efc63ef0 RS |
5190 | desired_glyphs->charstarts[vpos][i] = 0; |
5191 | ||
a2889657 JB |
5192 | if (maxcol >= 0 && mincol > maxcol) |
5193 | mincol = maxcol; | |
5194 | ||
1c9241f5 KH |
5195 | if (length < 0) |
5196 | /* We need this value for multibyte characters. */ | |
5197 | length = strlen (string); | |
5198 | ||
d3413a53 RS |
5199 | /* We set truncated to 1 if we get stopped by trying to pass END |
5200 | (that is, trying to pass MAXCOL.) */ | |
5201 | truncated = 0; | |
5202 | while (1) | |
a2889657 | 5203 | { |
1c9241f5 KH |
5204 | int len; |
5205 | ||
5206 | if (length <= 0) | |
90adcf20 | 5207 | break; |
1c9241f5 KH |
5208 | if (multibyte) |
5209 | c = STRING_CHAR_AND_LENGTH (string, length, len); | |
5210 | else | |
5211 | c = *string, len = 1; | |
5212 | ||
5213 | string += len, length -= len; | |
90adcf20 | 5214 | |
d3413a53 RS |
5215 | if (p1 >= end) |
5216 | { | |
5217 | truncated = 1; | |
5218 | break; | |
5219 | } | |
5220 | ||
376b0e59 RS |
5221 | if (dp != 0 && VECTORP (DISP_CHAR_VECTOR (dp, c))) |
5222 | { | |
5223 | p1 = copy_part_of_rope (f, p1, start, | |
5224 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->contents, | |
5225 | XVECTOR (DISP_CHAR_VECTOR (dp, c))->size, | |
5226 | 0); | |
5227 | } | |
5228 | else if (c >= 040 && c < 0177) | |
a2889657 JB |
5229 | { |
5230 | if (p1 >= start) | |
5231 | *p1 = c; | |
5232 | p1++; | |
5233 | } | |
5234 | else if (c == '\t') | |
5235 | { | |
5236 | do | |
5237 | { | |
5238 | if (p1 >= start && p1 < end) | |
5239 | *p1 = SPACEGLYPH; | |
5240 | p1++; | |
5241 | } | |
5242 | while ((p1 - start + hscroll - (hscroll > 0)) % tab_width); | |
5243 | } | |
ded34426 | 5244 | else if (c < 0200 && ! NILP (buffer_defaults.ctl_arrow)) |
a2889657 JB |
5245 | { |
5246 | if (p1 >= start) | |
e57bca5d KH |
5247 | *p1 = (fix_glyph |
5248 | (f, (dp && INTEGERP (DISP_CTRL_GLYPH (dp)) | |
5249 | && GLYPH_CHAR_VALID_P (XINT (DISP_CTRL_GLYPH (dp))) | |
5250 | ? XINT (DISP_CTRL_GLYPH (dp)) : '^'), | |
5251 | 0)); | |
a2889657 | 5252 | p1++; |
6e8290aa | 5253 | if (p1 >= start && p1 < end) |
a2889657 JB |
5254 | *p1 = c ^ 0100; |
5255 | p1++; | |
5256 | } | |
1c9241f5 KH |
5257 | else |
5258 | { | |
a688bb24 KH |
5259 | /* C is a multibyte character, control character or a binary |
5260 | byte data. */ | |
5261 | int remaining_bytes = len; | |
1c9241f5 | 5262 | |
a688bb24 | 5263 | if (c >= 0400 && CHAR_VALID_P (c, 0)) |
1c9241f5 | 5264 | { |
a688bb24 KH |
5265 | /* C is a multibyte character. */ |
5266 | int charset = CHAR_CHARSET (c); | |
5267 | int columns = (charset == CHARSET_COMPOSITION | |
5268 | ? cmpchar_table[COMPOSITE_CHAR_ID (c)]->width | |
5269 | : CHARSET_WIDTH (charset)); | |
5270 | ||
5271 | remaining_bytes -= CHARSET_BYTES (charset); | |
5272 | if (p1 < start) | |
1c9241f5 | 5273 | { |
a688bb24 KH |
5274 | /* Since we can't show the left part of C, fill all |
5275 | columns with spaces. */ | |
5276 | columns -= start - p1; | |
5277 | p1 = start; | |
5278 | while (columns--) | |
5279 | { | |
5280 | if (p1 < end) | |
5281 | *p1 = SPACEGLYPH; | |
5282 | p1++; | |
5283 | } | |
1c9241f5 | 5284 | } |
a688bb24 | 5285 | else if (p1 + columns > end) |
1c9241f5 | 5286 | { |
a688bb24 KH |
5287 | /* Since we can't show the right part of C, fill all |
5288 | columns with TRUNCATE if TRUNCATE is specified. */ | |
5289 | if (truncate) | |
5290 | { | |
5291 | while (p1 < end) | |
5292 | *p1++ = fix_glyph (f, truncate, 0); | |
5293 | /* And tell the line is truncated. */ | |
5294 | truncated = 1; | |
5295 | } | |
5296 | break; | |
5297 | } | |
5298 | else | |
5299 | { | |
5300 | /* We can show the whole glyph of C. */ | |
5301 | *p1++ = c; | |
5302 | while (--columns) | |
5303 | *p1++ = c | GLYPH_MASK_PADDING; | |
1c9241f5 | 5304 | } |
1c9241f5 | 5305 | } |
a688bb24 KH |
5306 | |
5307 | while (remaining_bytes > 0) | |
1c9241f5 | 5308 | { |
a688bb24 KH |
5309 | c = *(string - remaining_bytes--); |
5310 | ||
5311 | if (p1 >= start) | |
5312 | *p1 = (fix_glyph | |
5313 | (f, (dp && INTEGERP (DISP_ESCAPE_GLYPH (dp)) | |
5314 | && GLYPH_CHAR_VALID_P (XINT (DISP_ESCAPE_GLYPH (dp))) | |
5315 | ? XINT (DISP_ESCAPE_GLYPH (dp)) : '\\'), | |
5316 | 0)); | |
5317 | p1++; | |
5318 | if (p1 >= start && p1 < end) | |
5319 | *p1 = (c >> 6) + '0'; | |
5320 | p1++; | |
5321 | if (p1 >= start && p1 < end) | |
5322 | *p1 = (7 & (c >> 3)) + '0'; | |
5323 | p1++; | |
5324 | if (p1 >= start && p1 < end) | |
5325 | *p1 = (7 & c) + '0'; | |
5326 | p1++; | |
1c9241f5 KH |
5327 | } |
5328 | } | |
a2889657 JB |
5329 | } |
5330 | ||
d3413a53 | 5331 | if (truncated) |
a2889657 JB |
5332 | { |
5333 | p1 = end; | |
278feba9 | 5334 | if (truncate) *p1++ = fix_glyph (f, truncate, 0); |
a2889657 JB |
5335 | } |
5336 | else if (mincol >= 0) | |
5337 | { | |
5338 | end = desired_glyphs->glyphs[vpos] + mincol; | |
5339 | while (p1 < end) | |
5340 | *p1++ = SPACEGLYPH; | |
5341 | } | |
5342 | ||
5343 | { | |
5344 | register int len = p1 - desired_glyphs->glyphs[vpos]; | |
5345 | ||
5346 | if (len > desired_glyphs->used[vpos]) | |
5347 | desired_glyphs->used[vpos] = len; | |
5348 | desired_glyphs->glyphs[vpos][desired_glyphs->used[vpos]] = 0; | |
5349 | ||
5350 | return len; | |
5351 | } | |
5352 | } | |
5353 | \f | |
642eefc6 RS |
5354 | /* This is like a combination of memq and assq. |
5355 | Return 1 if PROPVAL appears as an element of LIST | |
5356 | or as the car of an element of LIST. | |
af460d46 RS |
5357 | If PROPVAL is a list, compare each element against LIST |
5358 | in that way, and return 1 if any element of PROPVAL is found in LIST. | |
642eefc6 RS |
5359 | Otherwise return 0. |
5360 | This function cannot quit. */ | |
5361 | ||
5362 | int | |
5363 | invisible_p (propval, list) | |
5364 | register Lisp_Object propval; | |
5365 | Lisp_Object list; | |
5366 | { | |
af460d46 RS |
5367 | register Lisp_Object tail, proptail; |
5368 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
642eefc6 RS |
5369 | { |
5370 | register Lisp_Object tem; | |
af460d46 | 5371 | tem = XCONS (tail)->car; |
642eefc6 RS |
5372 | if (EQ (propval, tem)) |
5373 | return 1; | |
5374 | if (CONSP (tem) && EQ (propval, XCONS (tem)->car)) | |
5375 | return 1; | |
5376 | } | |
af460d46 RS |
5377 | if (CONSP (propval)) |
5378 | for (proptail = propval; CONSP (proptail); | |
5379 | proptail = XCONS (proptail)->cdr) | |
5380 | { | |
5381 | Lisp_Object propelt; | |
5382 | propelt = XCONS (proptail)->car; | |
5383 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
5384 | { | |
5385 | register Lisp_Object tem; | |
5386 | tem = XCONS (tail)->car; | |
5387 | if (EQ (propelt, tem)) | |
5388 | return 1; | |
5389 | if (CONSP (tem) && EQ (propelt, XCONS (tem)->car)) | |
5390 | return 1; | |
5391 | } | |
5392 | } | |
642eefc6 RS |
5393 | return 0; |
5394 | } | |
5395 | ||
5396 | /* Return 1 if PROPVAL appears as the car of an element of LIST | |
5397 | and the cdr of that element is non-nil. | |
af460d46 RS |
5398 | If PROPVAL is a list, check each element of PROPVAL in that way, |
5399 | and the first time some element is found, | |
5400 | return 1 if the cdr of that element is non-nil. | |
642eefc6 RS |
5401 | Otherwise return 0. |
5402 | This function cannot quit. */ | |
5403 | ||
5404 | int | |
5405 | invisible_ellipsis_p (propval, list) | |
5406 | register Lisp_Object propval; | |
5407 | Lisp_Object list; | |
5408 | { | |
af460d46 RS |
5409 | register Lisp_Object tail, proptail; |
5410 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
642eefc6 RS |
5411 | { |
5412 | register Lisp_Object tem; | |
af460d46 | 5413 | tem = XCONS (tail)->car; |
642eefc6 RS |
5414 | if (CONSP (tem) && EQ (propval, XCONS (tem)->car)) |
5415 | return ! NILP (XCONS (tem)->cdr); | |
5416 | } | |
af460d46 RS |
5417 | if (CONSP (propval)) |
5418 | for (proptail = propval; CONSP (proptail); | |
5419 | proptail = XCONS (proptail)->cdr) | |
5420 | { | |
5421 | Lisp_Object propelt; | |
5422 | propelt = XCONS (proptail)->car; | |
5423 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
5424 | { | |
5425 | register Lisp_Object tem; | |
5426 | tem = XCONS (tail)->car; | |
5427 | if (CONSP (tem) && EQ (propelt, XCONS (tem)->car)) | |
5428 | return ! NILP (XCONS (tem)->cdr); | |
5429 | } | |
5430 | } | |
642eefc6 RS |
5431 | return 0; |
5432 | } | |
5433 | \f | |
a2889657 JB |
5434 | void |
5435 | syms_of_xdisp () | |
5436 | { | |
735c094c KH |
5437 | staticpro (&Qinhibit_redisplay); |
5438 | Qinhibit_redisplay = intern ("inhibit-redisplay"); | |
5439 | ||
cf074754 RS |
5440 | staticpro (&Qmenu_bar_update_hook); |
5441 | Qmenu_bar_update_hook = intern ("menu-bar-update-hook"); | |
5442 | ||
d46fb96a | 5443 | staticpro (&Qoverriding_terminal_local_map); |
7079aefa | 5444 | Qoverriding_terminal_local_map = intern ("overriding-terminal-local-map"); |
d46fb96a | 5445 | |
399164b4 KH |
5446 | staticpro (&Qoverriding_local_map); |
5447 | Qoverriding_local_map = intern ("overriding-local-map"); | |
5448 | ||
75c43375 RS |
5449 | staticpro (&Qwindow_scroll_functions); |
5450 | Qwindow_scroll_functions = intern ("window-scroll-functions"); | |
5451 | ||
e0bfbde6 RS |
5452 | staticpro (&Qredisplay_end_trigger_functions); |
5453 | Qredisplay_end_trigger_functions = intern ("redisplay-end-trigger-functions"); | |
67481ae5 | 5454 | |
2e54982e RS |
5455 | staticpro (&Qinhibit_point_motion_hooks); |
5456 | Qinhibit_point_motion_hooks = intern ("inhibit-point-motion-hooks"); | |
5457 | ||
a2889657 JB |
5458 | staticpro (&last_arrow_position); |
5459 | staticpro (&last_arrow_string); | |
5460 | last_arrow_position = Qnil; | |
5461 | last_arrow_string = Qnil; | |
5462 | ||
735c094c KH |
5463 | DEFVAR_LISP ("inhibit-redisplay", &Vinhibit_redisplay, |
5464 | "Non-nil means don't actually do any redisplay.\n\ | |
5465 | This is used for internal purposes."); | |
5466 | Vinhibit_redisplay = Qnil; | |
5467 | ||
a2889657 | 5468 | DEFVAR_LISP ("global-mode-string", &Vglobal_mode_string, |
8c45d522 | 5469 | "String (or mode line construct) included (normally) in `mode-line-format'."); |
a2889657 JB |
5470 | Vglobal_mode_string = Qnil; |
5471 | ||
5472 | DEFVAR_LISP ("overlay-arrow-position", &Voverlay_arrow_position, | |
5473 | "Marker for where to display an arrow on top of the buffer text.\n\ | |
5474 | This must be the beginning of a line in order to work.\n\ | |
5475 | See also `overlay-arrow-string'."); | |
5476 | Voverlay_arrow_position = Qnil; | |
5477 | ||
5478 | DEFVAR_LISP ("overlay-arrow-string", &Voverlay_arrow_string, | |
5479 | "String to display as an arrow. See also `overlay-arrow-position'."); | |
5480 | Voverlay_arrow_string = Qnil; | |
5481 | ||
5482 | DEFVAR_INT ("scroll-step", &scroll_step, | |
5483 | "*The number of lines to try scrolling a window by when point moves out.\n\ | |
44fa5b1e JB |
5484 | If that fails to bring point back on frame, point is centered instead.\n\ |
5485 | If this is zero, point is always centered after it moves off frame."); | |
a2889657 | 5486 | |
0789adb2 RS |
5487 | DEFVAR_INT ("scroll-conservatively", &scroll_conservatively, |
5488 | "*Scroll up to this many lines, to bring point back on screen."); | |
5489 | scroll_conservatively = 0; | |
5490 | ||
9afd2168 RS |
5491 | DEFVAR_INT ("scroll-margin", &scroll_margin, |
5492 | "*Number of lines of margin at the top and bottom of a window.\n\ | |
5493 | Recenter the window whenever point gets within this many lines\n\ | |
5494 | of the top or bottom of the window."); | |
5495 | scroll_margin = 0; | |
5496 | ||
a2889657 JB |
5497 | DEFVAR_INT ("debug-end-pos", &debug_end_pos, "Don't ask"); |
5498 | ||
5499 | DEFVAR_BOOL ("truncate-partial-width-windows", | |
5500 | &truncate_partial_width_windows, | |
44fa5b1e | 5501 | "*Non-nil means truncate lines in all windows less than full frame wide."); |
a2889657 JB |
5502 | truncate_partial_width_windows = 1; |
5503 | ||
5504 | DEFVAR_BOOL ("mode-line-inverse-video", &mode_line_inverse_video, | |
5505 | "*Non-nil means use inverse video for the mode line."); | |
5506 | mode_line_inverse_video = 1; | |
aa6d10fa RS |
5507 | |
5508 | DEFVAR_INT ("line-number-display-limit", &line_number_display_limit, | |
db4f2bfa KH |
5509 | "*Maximum buffer size (in characters) for line number display\n\ |
5510 | If the buffer is bigger than this, the line number does not appear\n\ | |
5511 | in the mode line.."); | |
aa6d10fa | 5512 | line_number_display_limit = 1000000; |
fba9ce76 RS |
5513 | |
5514 | DEFVAR_BOOL ("highlight-nonselected-windows", &highlight_nonselected_windows, | |
5515 | "*Non-nil means highlight region even in nonselected windows."); | |
293a54ce | 5516 | highlight_nonselected_windows = 0; |
d39b6696 KH |
5517 | |
5518 | DEFVAR_BOOL ("multiple-frames", &multiple_frames, | |
3450d04c KH |
5519 | "Non-nil if more than one frame is visible on this display.\n\ |
5520 | Minibuffer-only frames don't count, but iconified frames do.\n\ | |
4c2eb242 RS |
5521 | This variable is not guaranteed to be accurate except while processing\n\ |
5522 | `frame-title-format' and `icon-title-format'."); | |
d39b6696 KH |
5523 | |
5524 | DEFVAR_LISP ("frame-title-format", &Vframe_title_format, | |
5525 | "Template for displaying the titlebar of visible frames.\n\ | |
5526 | \(Assuming the window manager supports this feature.)\n\ | |
5527 | This variable has the same structure as `mode-line-format' (which see),\n\ | |
5528 | and is used only on frames for which no explicit name has been set\n\ | |
5529 | \(see `modify-frame-parameters')."); | |
5530 | DEFVAR_LISP ("icon-title-format", &Vicon_title_format, | |
5531 | "Template for displaying the titlebar of an iconified frame.\n\ | |
5532 | \(Assuming the window manager supports this feature.)\n\ | |
5533 | This variable has the same structure as `mode-line-format' (which see),\n\ | |
5534 | and is used only on frames for which no explicit name has been set\n\ | |
5535 | \(see `modify-frame-parameters')."); | |
5536 | Vicon_title_format | |
5537 | = Vframe_title_format | |
5538 | = Fcons (intern ("multiple-frames"), | |
5539 | Fcons (build_string ("%b"), | |
5540 | Fcons (Fcons (build_string (""), | |
5541 | Fcons (intern ("invocation-name"), | |
5542 | Fcons (build_string ("@"), | |
5543 | Fcons (intern ("system-name"), | |
5544 | Qnil)))), | |
5545 | Qnil))); | |
5992c4f7 KH |
5546 | |
5547 | DEFVAR_LISP ("message-log-max", &Vmessage_log_max, | |
5548 | "Maximum number of lines to keep in the message log buffer.\n\ | |
5549 | If nil, disable message logging. If t, log messages but don't truncate\n\ | |
5550 | the buffer when it becomes large."); | |
5551 | XSETFASTINT (Vmessage_log_max, 50); | |
08b610e4 RS |
5552 | |
5553 | DEFVAR_LISP ("window-size-change-functions", &Vwindow_size_change_functions, | |
5554 | "Functions called before redisplay, if window sizes have changed.\n\ | |
5555 | The value should be a list of functions that take one argument.\n\ | |
5556 | Just before redisplay, for each frame, if any of its windows have changed\n\ | |
5557 | size since the last redisplay, or have been split or deleted,\n\ | |
5558 | all the functions in the list are called, with the frame as argument."); | |
5559 | Vwindow_size_change_functions = Qnil; | |
75c43375 RS |
5560 | |
5561 | DEFVAR_LISP ("window-scroll-functions", &Vwindow_scroll_functions, | |
010494d0 | 5562 | "List of functions to call before redisplaying a window with scrolling.\n\ |
75c43375 | 5563 | Each function is called with two arguments, the window\n\ |
8d9583b0 RS |
5564 | and its new display-start position. Note that the value of `window-end'\n\ |
5565 | is not valid when these functions are called."); | |
75c43375 | 5566 | Vwindow_scroll_functions = Qnil; |
010494d0 KH |
5567 | |
5568 | DEFVAR_INT ("minibuffer-scroll-overlap", &minibuffer_scroll_overlap, | |
5569 | "*Number of characters of overlap when scrolling a one-line window.\n\ | |
5570 | This commonly affects the minibuffer window, hence the name of the variable."); | |
5571 | minibuffer_scroll_overlap = 20; | |
a2889657 JB |
5572 | } |
5573 | ||
5574 | /* initialize the window system */ | |
dfcf069d | 5575 | void |
a2889657 JB |
5576 | init_xdisp () |
5577 | { | |
5578 | Lisp_Object root_window; | |
5579 | #ifndef COMPILER_REGISTER_BUG | |
5580 | register | |
5581 | #endif /* COMPILER_REGISTER_BUG */ | |
5582 | struct window *mini_w; | |
5583 | ||
5584 | this_line_bufpos = 0; | |
5585 | ||
5586 | mini_w = XWINDOW (minibuf_window); | |
11e82b76 | 5587 | root_window = FRAME_ROOT_WINDOW (XFRAME (WINDOW_FRAME (mini_w))); |
a2889657 JB |
5588 | |
5589 | echo_area_glyphs = 0; | |
5590 | previous_echo_glyphs = 0; | |
5591 | ||
5592 | if (!noninteractive) | |
5593 | { | |
44fa5b1e | 5594 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (root_window))); |
12c226c5 RS |
5595 | XSETFASTINT (XWINDOW (root_window)->top, FRAME_MENU_BAR_LINES (f)); |
5596 | set_window_height (root_window, | |
5597 | FRAME_HEIGHT (f) - 1 - FRAME_MENU_BAR_LINES (f), | |
5598 | 0); | |
c2213350 | 5599 | XSETFASTINT (mini_w->top, FRAME_HEIGHT (f) - 1); |
a2889657 JB |
5600 | set_window_height (minibuf_window, 1, 0); |
5601 | ||
c2213350 KH |
5602 | XSETFASTINT (XWINDOW (root_window)->width, FRAME_WIDTH (f)); |
5603 | XSETFASTINT (mini_w->width, FRAME_WIDTH (f)); | |
a2889657 JB |
5604 | } |
5605 | } |