Add help on how to remap Caps Lock to Esc
[MacVim.git] / src / screen.c
blob45ccf0034a77ce06ed8533f47e630bc9bf29b16b
1 /* vi:set ts=8 sts=4 sw=4:
3 * VIM - Vi IMproved by Bram Moolenaar
5 * Do ":help uganda" in Vim to read copying and usage conditions.
6 * Do ":help credits" in Vim to see a list of people who contributed.
7 * See README.txt for an overview of the Vim source code.
8 */
11 * screen.c: code for displaying on the screen
13 * Output to the screen (console, terminal emulator or GUI window) is minimized
14 * by remembering what is already on the screen, and only updating the parts
15 * that changed.
17 * ScreenLines[off] Contains a copy of the whole screen, as it is currently
18 * displayed (excluding text written by external commands).
19 * ScreenAttrs[off] Contains the associated attributes.
20 * LineOffset[row] Contains the offset into ScreenLines*[] and ScreenAttrs[]
21 * for each line.
22 * LineWraps[row] Flag for each line whether it wraps to the next line.
24 * For double-byte characters, two consecutive bytes in ScreenLines[] can form
25 * one character which occupies two display cells.
26 * For UTF-8 a multi-byte character is converted to Unicode and stored in
27 * ScreenLinesUC[]. ScreenLines[] contains the first byte only. For an ASCII
28 * character without composing chars ScreenLinesUC[] will be 0. When the
29 * character occupies two display cells the next byte in ScreenLines[] is 0.
30 * ScreenLinesC[][] contain up to 'maxcombine' composing characters
31 * (drawn on top of the first character). They are 0 when not used.
32 * ScreenLines2[] is only used for euc-jp to store the second byte if the
33 * first byte is 0x8e (single-width character).
35 * The screen_*() functions write to the screen and handle updating
36 * ScreenLines[].
38 * update_screen() is the function that updates all windows and status lines.
39 * It is called form the main loop when must_redraw is non-zero. It may be
40 * called from other places when an immediate screen update is needed.
42 * The part of the buffer that is displayed in a window is set with:
43 * - w_topline (first buffer line in window)
44 * - w_topfill (filler line above the first line)
45 * - w_leftcol (leftmost window cell in window),
46 * - w_skipcol (skipped window cells of first line)
48 * Commands that only move the cursor around in a window, do not need to take
49 * action to update the display. The main loop will check if w_topline is
50 * valid and update it (scroll the window) when needed.
52 * Commands that scroll a window change w_topline and must call
53 * check_cursor() to move the cursor into the visible part of the window, and
54 * call redraw_later(VALID) to have the window displayed by update_screen()
55 * later.
57 * Commands that change text in the buffer must call changed_bytes() or
58 * changed_lines() to mark the area that changed and will require updating
59 * later. The main loop will call update_screen(), which will update each
60 * window that shows the changed buffer. This assumes text above the change
61 * can remain displayed as it is. Text after the change may need updating for
62 * scrolling, folding and syntax highlighting.
64 * Commands that change how a window is displayed (e.g., setting 'list') or
65 * invalidate the contents of a window in another way (e.g., change fold
66 * settings), must call redraw_later(NOT_VALID) to have the whole window
67 * redisplayed by update_screen() later.
69 * Commands that change how a buffer is displayed (e.g., setting 'tabstop')
70 * must call redraw_curbuf_later(NOT_VALID) to have all the windows for the
71 * buffer redisplayed by update_screen() later.
73 * Commands that change highlighting and possibly cause a scroll too must call
74 * redraw_later(SOME_VALID) to update the whole window but still use scrolling
75 * to avoid redrawing everything. But the length of displayed lines must not
76 * change, use NOT_VALID then.
78 * Commands that move the window position must call redraw_later(NOT_VALID).
79 * TODO: should minimize redrawing by scrolling when possible.
81 * Commands that change everything (e.g., resizing the screen) must call
82 * redraw_all_later(NOT_VALID) or redraw_all_later(CLEAR).
84 * Things that are handled indirectly:
85 * - When messages scroll the screen up, msg_scrolled will be set and
86 * update_screen() called to redraw.
89 #include "vim.h"
92 * The attributes that are actually active for writing to the screen.
94 static int screen_attr = 0;
97 * Positioning the cursor is reduced by remembering the last position.
98 * Mostly used by windgoto() and screen_char().
100 static int screen_cur_row, screen_cur_col; /* last known cursor position */
102 #ifdef FEAT_SEARCH_EXTRA
103 static match_T search_hl; /* used for 'hlsearch' highlight matching */
104 #endif
106 #ifdef FEAT_FOLDING
107 static foldinfo_T win_foldinfo; /* info for 'foldcolumn' */
108 #endif
111 * Buffer for one screen line (characters and attributes).
113 static schar_T *current_ScreenLine;
115 static void win_update __ARGS((win_T *wp));
116 static void win_draw_end __ARGS((win_T *wp, int c1, int c2, int row, int endrow, hlf_T hl));
117 #ifdef FEAT_FOLDING
118 static void fold_line __ARGS((win_T *wp, long fold_count, foldinfo_T *foldinfo, linenr_T lnum, int row));
119 static void fill_foldcolumn __ARGS((char_u *p, win_T *wp, int closed, linenr_T lnum));
120 static void copy_text_attr __ARGS((int off, char_u *buf, int len, int attr));
121 #endif
122 static int win_line __ARGS((win_T *, linenr_T, int, int, int nochange));
123 static int char_needs_redraw __ARGS((int off_from, int off_to, int cols));
124 #ifdef FEAT_RIGHTLEFT
125 static void screen_line __ARGS((int row, int coloff, int endcol, int clear_width, int rlflag));
126 # define SCREEN_LINE(r, o, e, c, rl) screen_line((r), (o), (e), (c), (rl))
127 #else
128 static void screen_line __ARGS((int row, int coloff, int endcol, int clear_width));
129 # define SCREEN_LINE(r, o, e, c, rl) screen_line((r), (o), (e), (c))
130 #endif
131 #ifdef FEAT_VERTSPLIT
132 static void draw_vsep_win __ARGS((win_T *wp, int row));
133 #endif
134 #ifdef FEAT_STL_OPT
135 static void redraw_custum_statusline __ARGS((win_T *wp));
136 #endif
137 #ifdef FEAT_SEARCH_EXTRA
138 #define SEARCH_HL_PRIORITY 0
139 static void start_search_hl __ARGS((void));
140 static void end_search_hl __ARGS((void));
141 static void prepare_search_hl __ARGS((win_T *wp, linenr_T lnum));
142 static void next_search_hl __ARGS((win_T *win, match_T *shl, linenr_T lnum, colnr_T mincol));
143 #endif
144 static void screen_start_highlight __ARGS((int attr));
145 static void screen_char __ARGS((unsigned off, int row, int col));
146 #ifdef FEAT_MBYTE
147 static void screen_char_2 __ARGS((unsigned off, int row, int col));
148 #endif
149 static void screenclear2 __ARGS((void));
150 static void lineclear __ARGS((unsigned off, int width));
151 static void lineinvalid __ARGS((unsigned off, int width));
152 #ifdef FEAT_VERTSPLIT
153 static void linecopy __ARGS((int to, int from, win_T *wp));
154 static void redraw_block __ARGS((int row, int end, win_T *wp));
155 #endif
156 static int win_do_lines __ARGS((win_T *wp, int row, int line_count, int mayclear, int del));
157 static void win_rest_invalid __ARGS((win_T *wp));
158 static void msg_pos_mode __ARGS((void));
159 #if defined(FEAT_WINDOWS)
160 static void draw_tabline __ARGS((void));
161 #endif
162 #if defined(FEAT_WINDOWS) || defined(FEAT_WILDMENU) || defined(FEAT_STL_OPT)
163 static int fillchar_status __ARGS((int *attr, int is_curwin));
164 #endif
165 #ifdef FEAT_VERTSPLIT
166 static int fillchar_vsep __ARGS((int *attr));
167 #endif
168 #ifdef FEAT_STL_OPT
169 static void win_redr_custom __ARGS((win_T *wp, int draw_ruler));
170 #endif
171 #ifdef FEAT_CMDL_INFO
172 static void win_redr_ruler __ARGS((win_T *wp, int always));
173 #endif
175 #if defined(FEAT_CLIPBOARD) || defined(FEAT_VERTSPLIT)
176 /* Ugly global: overrule attribute used by screen_char() */
177 static int screen_char_attr = 0;
178 #endif
181 * Redraw the current window later, with update_screen(type).
182 * Set must_redraw only if not already set to a higher value.
183 * e.g. if must_redraw is CLEAR, type NOT_VALID will do nothing.
185 void
186 redraw_later(type)
187 int type;
189 redraw_win_later(curwin, type);
192 void
193 redraw_win_later(wp, type)
194 win_T *wp;
195 int type;
197 if (wp->w_redr_type < type)
199 wp->w_redr_type = type;
200 if (type >= NOT_VALID)
201 wp->w_lines_valid = 0;
202 if (must_redraw < type) /* must_redraw is the maximum of all windows */
203 must_redraw = type;
208 * Force a complete redraw later. Also resets the highlighting. To be used
209 * after executing a shell command that messes up the screen.
211 void
212 redraw_later_clear()
214 redraw_all_later(CLEAR);
215 #ifdef FEAT_GUI
216 if (gui.in_use)
217 /* Use a code that will reset gui.highlight_mask in
218 * gui_stop_highlight(). */
219 screen_attr = HL_ALL + 1;
220 else
221 #endif
222 /* Use attributes that is very unlikely to appear in text. */
223 screen_attr = HL_BOLD | HL_UNDERLINE | HL_INVERSE;
227 * Mark all windows to be redrawn later.
229 void
230 redraw_all_later(type)
231 int type;
233 win_T *wp;
235 FOR_ALL_WINDOWS(wp)
237 redraw_win_later(wp, type);
242 * Mark all windows that are editing the current buffer to be updated later.
244 void
245 redraw_curbuf_later(type)
246 int type;
248 redraw_buf_later(curbuf, type);
251 void
252 redraw_buf_later(buf, type)
253 buf_T *buf;
254 int type;
256 win_T *wp;
258 FOR_ALL_WINDOWS(wp)
260 if (wp->w_buffer == buf)
261 redraw_win_later(wp, type);
266 * Changed something in the current window, at buffer line "lnum", that
267 * requires that line and possibly other lines to be redrawn.
268 * Used when entering/leaving Insert mode with the cursor on a folded line.
269 * Used to remove the "$" from a change command.
270 * Note that when also inserting/deleting lines w_redraw_top and w_redraw_bot
271 * may become invalid and the whole window will have to be redrawn.
273 /*ARGSUSED*/
274 void
275 redrawWinline(lnum, invalid)
276 linenr_T lnum;
277 int invalid; /* window line height is invalid now */
279 #ifdef FEAT_FOLDING
280 int i;
281 #endif
283 if (curwin->w_redraw_top == 0 || curwin->w_redraw_top > lnum)
284 curwin->w_redraw_top = lnum;
285 if (curwin->w_redraw_bot == 0 || curwin->w_redraw_bot < lnum)
286 curwin->w_redraw_bot = lnum;
287 redraw_later(VALID);
289 #ifdef FEAT_FOLDING
290 if (invalid)
292 /* A w_lines[] entry for this lnum has become invalid. */
293 i = find_wl_entry(curwin, lnum);
294 if (i >= 0)
295 curwin->w_lines[i].wl_valid = FALSE;
297 #endif
301 * update all windows that are editing the current buffer
303 void
304 update_curbuf(type)
305 int type;
307 redraw_curbuf_later(type);
308 update_screen(type);
312 * update_screen()
314 * Based on the current value of curwin->w_topline, transfer a screenfull
315 * of stuff from Filemem to ScreenLines[], and update curwin->w_botline.
317 void
318 update_screen(type)
319 int type;
321 win_T *wp;
322 static int did_intro = FALSE;
323 #if defined(FEAT_SEARCH_EXTRA) || defined(FEAT_CLIPBOARD)
324 int did_one;
325 #endif
327 if (!screen_valid(TRUE))
328 return;
330 if (must_redraw)
332 if (type < must_redraw) /* use maximal type */
333 type = must_redraw;
335 /* must_redraw is reset here, so that when we run into some weird
336 * reason to redraw while busy redrawing (e.g., asynchronous
337 * scrolling), or update_topline() in win_update() will cause a
338 * scroll, the screen will be redrawn later or in win_update(). */
339 must_redraw = 0;
342 /* Need to update w_lines[]. */
343 if (curwin->w_lines_valid == 0 && type < NOT_VALID)
344 type = NOT_VALID;
346 if (!redrawing())
348 redraw_later(type); /* remember type for next time */
349 must_redraw = type;
350 if (type > INVERTED_ALL)
351 curwin->w_lines_valid = 0; /* don't use w_lines[].wl_size now */
352 return;
355 updating_screen = TRUE;
356 #ifdef FEAT_SYN_HL
357 ++display_tick; /* let syntax code know we're in a next round of
358 * display updating */
359 #endif
362 * if the screen was scrolled up when displaying a message, scroll it down
364 if (msg_scrolled)
366 clear_cmdline = TRUE;
367 if (msg_scrolled > Rows - 5) /* clearing is faster */
368 type = CLEAR;
369 else if (type != CLEAR)
371 check_for_delay(FALSE);
372 if (screen_ins_lines(0, 0, msg_scrolled, (int)Rows, NULL) == FAIL)
373 type = CLEAR;
374 FOR_ALL_WINDOWS(wp)
376 if (W_WINROW(wp) < msg_scrolled)
378 if (W_WINROW(wp) + wp->w_height > msg_scrolled
379 && wp->w_redr_type < REDRAW_TOP
380 && wp->w_lines_valid > 0
381 && wp->w_topline == wp->w_lines[0].wl_lnum)
383 wp->w_upd_rows = msg_scrolled - W_WINROW(wp);
384 wp->w_redr_type = REDRAW_TOP;
386 else
388 wp->w_redr_type = NOT_VALID;
389 #ifdef FEAT_WINDOWS
390 if (W_WINROW(wp) + wp->w_height + W_STATUS_HEIGHT(wp)
391 <= msg_scrolled)
392 wp->w_redr_status = TRUE;
393 #endif
397 redraw_cmdline = TRUE;
398 #ifdef FEAT_WINDOWS
399 redraw_tabline = TRUE;
400 #endif
402 msg_scrolled = 0;
403 need_wait_return = FALSE;
406 /* reset cmdline_row now (may have been changed temporarily) */
407 compute_cmdrow();
409 /* Check for changed highlighting */
410 if (need_highlight_changed)
411 highlight_changed();
413 if (type == CLEAR) /* first clear screen */
415 screenclear(); /* will reset clear_cmdline */
416 type = NOT_VALID;
419 if (clear_cmdline) /* going to clear cmdline (done below) */
420 check_for_delay(FALSE);
422 #ifdef FEAT_LINEBREAK
423 /* Force redraw when width of 'number' column changes. */
424 if (curwin->w_redr_type < NOT_VALID
425 && curwin->w_nrwidth != (curwin->w_p_nu ? number_width(curwin) : 0))
426 curwin->w_redr_type = NOT_VALID;
427 #endif
430 * Only start redrawing if there is really something to do.
432 if (type == INVERTED)
433 update_curswant();
434 if (curwin->w_redr_type < type
435 && !((type == VALID
436 && curwin->w_lines[0].wl_valid
437 #ifdef FEAT_DIFF
438 && curwin->w_topfill == curwin->w_old_topfill
439 && curwin->w_botfill == curwin->w_old_botfill
440 #endif
441 && curwin->w_topline == curwin->w_lines[0].wl_lnum)
442 #ifdef FEAT_VISUAL
443 || (type == INVERTED
444 && VIsual_active
445 && curwin->w_old_cursor_lnum == curwin->w_cursor.lnum
446 && curwin->w_old_visual_mode == VIsual_mode
447 && (curwin->w_valid & VALID_VIRTCOL)
448 && curwin->w_old_curswant == curwin->w_curswant)
449 #endif
451 curwin->w_redr_type = type;
453 #ifdef FEAT_WINDOWS
454 /* Redraw the tab pages line if needed. */
455 if (redraw_tabline || type >= NOT_VALID)
456 draw_tabline();
457 #endif
459 #ifdef FEAT_SYN_HL
461 * Correct stored syntax highlighting info for changes in each displayed
462 * buffer. Each buffer must only be done once.
464 FOR_ALL_WINDOWS(wp)
466 if (wp->w_buffer->b_mod_set)
468 # ifdef FEAT_WINDOWS
469 win_T *wwp;
471 /* Check if we already did this buffer. */
472 for (wwp = firstwin; wwp != wp; wwp = wwp->w_next)
473 if (wwp->w_buffer == wp->w_buffer)
474 break;
475 # endif
476 if (
477 # ifdef FEAT_WINDOWS
478 wwp == wp &&
479 # endif
480 syntax_present(wp->w_buffer))
481 syn_stack_apply_changes(wp->w_buffer);
484 #endif
487 * Go from top to bottom through the windows, redrawing the ones that need
488 * it.
490 #if defined(FEAT_SEARCH_EXTRA) || defined(FEAT_CLIPBOARD)
491 did_one = FALSE;
492 #endif
493 #ifdef FEAT_SEARCH_EXTRA
494 search_hl.rm.regprog = NULL;
495 #endif
496 FOR_ALL_WINDOWS(wp)
498 if (wp->w_redr_type != 0)
500 cursor_off();
501 #if defined(FEAT_SEARCH_EXTRA) || defined(FEAT_CLIPBOARD)
502 if (!did_one)
504 did_one = TRUE;
505 # ifdef FEAT_SEARCH_EXTRA
506 start_search_hl();
507 # endif
508 # ifdef FEAT_CLIPBOARD
509 /* When Visual area changed, may have to update selection. */
510 if (clip_star.available && clip_isautosel())
511 clip_update_selection();
512 # endif
513 #ifdef FEAT_GUI
514 /* Remove the cursor before starting to do anything, because
515 * scrolling may make it difficult to redraw the text under
516 * it. */
517 if (gui.in_use)
518 gui_undraw_cursor();
519 #endif
521 #endif
522 win_update(wp);
525 #ifdef FEAT_WINDOWS
526 /* redraw status line after the window to minimize cursor movement */
527 if (wp->w_redr_status)
529 cursor_off();
530 win_redr_status(wp);
532 #endif
534 #if defined(FEAT_SEARCH_EXTRA)
535 end_search_hl();
536 #endif
538 #ifdef FEAT_WINDOWS
539 /* Reset b_mod_set flags. Going through all windows is probably faster
540 * than going through all buffers (there could be many buffers). */
541 for (wp = firstwin; wp != NULL; wp = wp->w_next)
542 wp->w_buffer->b_mod_set = FALSE;
543 #else
544 curbuf->b_mod_set = FALSE;
545 #endif
547 updating_screen = FALSE;
548 #ifdef FEAT_GUI
549 gui_may_resize_shell();
550 #endif
552 /* Clear or redraw the command line. Done last, because scrolling may
553 * mess up the command line. */
554 if (clear_cmdline || redraw_cmdline)
555 showmode();
557 /* May put up an introductory message when not editing a file */
558 if (!did_intro && bufempty()
559 && curbuf->b_fname == NULL
560 #ifdef FEAT_WINDOWS
561 && firstwin->w_next == NULL
562 #endif
563 && vim_strchr(p_shm, SHM_INTRO) == NULL)
564 intro_message(FALSE);
565 did_intro = TRUE;
567 #ifdef FEAT_GUI
568 /* Redraw the cursor and update the scrollbars when all screen updating is
569 * done. */
570 if (gui.in_use)
572 out_flush(); /* required before updating the cursor */
573 if (did_one)
574 gui_update_cursor(FALSE, FALSE);
575 gui_update_scrollbars(FALSE);
577 #endif
580 #if defined(FEAT_SIGNS) || defined(FEAT_GUI)
581 static void update_prepare __ARGS((void));
582 static void update_finish __ARGS((void));
585 * Prepare for updating one or more windows.
587 static void
588 update_prepare()
590 cursor_off();
591 updating_screen = TRUE;
592 #ifdef FEAT_GUI
593 /* Remove the cursor before starting to do anything, because scrolling may
594 * make it difficult to redraw the text under it. */
595 if (gui.in_use)
596 gui_undraw_cursor();
597 #endif
598 #ifdef FEAT_SEARCH_EXTRA
599 start_search_hl();
600 #endif
604 * Finish updating one or more windows.
606 static void
607 update_finish()
609 if (redraw_cmdline)
610 showmode();
612 # ifdef FEAT_SEARCH_EXTRA
613 end_search_hl();
614 # endif
616 updating_screen = FALSE;
618 # ifdef FEAT_GUI
619 gui_may_resize_shell();
621 /* Redraw the cursor and update the scrollbars when all screen updating is
622 * done. */
623 if (gui.in_use)
625 out_flush(); /* required before updating the cursor */
626 gui_update_cursor(FALSE, FALSE);
627 gui_update_scrollbars(FALSE);
629 # endif
631 #endif
633 #if defined(FEAT_SIGNS) || defined(PROTO)
634 void
635 update_debug_sign(buf, lnum)
636 buf_T *buf;
637 linenr_T lnum;
639 win_T *wp;
640 int doit = FALSE;
642 # ifdef FEAT_FOLDING
643 win_foldinfo.fi_level = 0;
644 # endif
646 /* update/delete a specific mark */
647 FOR_ALL_WINDOWS(wp)
649 if (buf != NULL && lnum > 0)
651 if (wp->w_buffer == buf && lnum >= wp->w_topline
652 && lnum < wp->w_botline)
654 if (wp->w_redraw_top == 0 || wp->w_redraw_top > lnum)
655 wp->w_redraw_top = lnum;
656 if (wp->w_redraw_bot == 0 || wp->w_redraw_bot < lnum)
657 wp->w_redraw_bot = lnum;
658 redraw_win_later(wp, VALID);
661 else
662 redraw_win_later(wp, VALID);
663 if (wp->w_redr_type != 0)
664 doit = TRUE;
667 if (!doit)
668 return;
670 /* update all windows that need updating */
671 update_prepare();
673 # ifdef FEAT_WINDOWS
674 for (wp = firstwin; wp; wp = wp->w_next)
676 if (wp->w_redr_type != 0)
677 win_update(wp);
678 if (wp->w_redr_status)
679 win_redr_status(wp);
681 # else
682 if (curwin->w_redr_type != 0)
683 win_update(curwin);
684 # endif
686 update_finish();
688 #endif
691 #if defined(FEAT_GUI) || defined(PROTO)
693 * Update a single window, its status line and maybe the command line msg.
694 * Used for the GUI scrollbar.
696 void
697 updateWindow(wp)
698 win_T *wp;
700 update_prepare();
702 #ifdef FEAT_CLIPBOARD
703 /* When Visual area changed, may have to update selection. */
704 if (clip_star.available && clip_isautosel())
705 clip_update_selection();
706 #endif
708 win_update(wp);
710 #ifdef FEAT_WINDOWS
711 /* When the screen was cleared redraw the tab pages line. */
712 if (redraw_tabline)
713 draw_tabline();
715 if (wp->w_redr_status
716 # ifdef FEAT_CMDL_INFO
717 || p_ru
718 # endif
719 # ifdef FEAT_STL_OPT
720 || *p_stl != NUL || *wp->w_p_stl != NUL
721 # endif
723 win_redr_status(wp);
724 #endif
726 update_finish();
728 #endif
731 * Update a single window.
733 * This may cause the windows below it also to be redrawn (when clearing the
734 * screen or scrolling lines).
736 * How the window is redrawn depends on wp->w_redr_type. Each type also
737 * implies the one below it.
738 * NOT_VALID redraw the whole window
739 * SOME_VALID redraw the whole window but do scroll when possible
740 * REDRAW_TOP redraw the top w_upd_rows window lines, otherwise like VALID
741 * INVERTED redraw the changed part of the Visual area
742 * INVERTED_ALL redraw the whole Visual area
743 * VALID 1. scroll up/down to adjust for a changed w_topline
744 * 2. update lines at the top when scrolled down
745 * 3. redraw changed text:
746 * - if wp->w_buffer->b_mod_set set, update lines between
747 * b_mod_top and b_mod_bot.
748 * - if wp->w_redraw_top non-zero, redraw lines between
749 * wp->w_redraw_top and wp->w_redr_bot.
750 * - continue redrawing when syntax status is invalid.
751 * 4. if scrolled up, update lines at the bottom.
752 * This results in three areas that may need updating:
753 * top: from first row to top_end (when scrolled down)
754 * mid: from mid_start to mid_end (update inversion or changed text)
755 * bot: from bot_start to last row (when scrolled up)
757 static void
758 win_update(wp)
759 win_T *wp;
761 buf_T *buf = wp->w_buffer;
762 int type;
763 int top_end = 0; /* Below last row of the top area that needs
764 updating. 0 when no top area updating. */
765 int mid_start = 999;/* first row of the mid area that needs
766 updating. 999 when no mid area updating. */
767 int mid_end = 0; /* Below last row of the mid area that needs
768 updating. 0 when no mid area updating. */
769 int bot_start = 999;/* first row of the bot area that needs
770 updating. 999 when no bot area updating */
771 #ifdef FEAT_VISUAL
772 int scrolled_down = FALSE; /* TRUE when scrolled down when
773 w_topline got smaller a bit */
774 #endif
775 #ifdef FEAT_SEARCH_EXTRA
776 matchitem_T *cur; /* points to the match list */
777 int top_to_mod = FALSE; /* redraw above mod_top */
778 #endif
780 int row; /* current window row to display */
781 linenr_T lnum; /* current buffer lnum to display */
782 int idx; /* current index in w_lines[] */
783 int srow; /* starting row of the current line */
785 int eof = FALSE; /* if TRUE, we hit the end of the file */
786 int didline = FALSE; /* if TRUE, we finished the last line */
787 int i;
788 long j;
789 static int recursive = FALSE; /* being called recursively */
790 int old_botline = wp->w_botline;
791 #ifdef FEAT_FOLDING
792 long fold_count;
793 #endif
794 #ifdef FEAT_SYN_HL
795 /* remember what happened to the previous line, to know if
796 * check_visual_highlight() can be used */
797 #define DID_NONE 1 /* didn't update a line */
798 #define DID_LINE 2 /* updated a normal line */
799 #define DID_FOLD 3 /* updated a folded line */
800 int did_update = DID_NONE;
801 linenr_T syntax_last_parsed = 0; /* last parsed text line */
802 #endif
803 linenr_T mod_top = 0;
804 linenr_T mod_bot = 0;
805 #if defined(FEAT_SYN_HL) || defined(FEAT_SEARCH_EXTRA)
806 int save_got_int;
807 #endif
809 type = wp->w_redr_type;
811 if (type == NOT_VALID)
813 #ifdef FEAT_WINDOWS
814 wp->w_redr_status = TRUE;
815 #endif
816 wp->w_lines_valid = 0;
819 /* Window is zero-height: nothing to draw. */
820 if (wp->w_height == 0)
822 wp->w_redr_type = 0;
823 return;
826 #ifdef FEAT_VERTSPLIT
827 /* Window is zero-width: Only need to draw the separator. */
828 if (wp->w_width == 0)
830 /* draw the vertical separator right of this window */
831 draw_vsep_win(wp, 0);
832 wp->w_redr_type = 0;
833 return;
835 #endif
837 #ifdef FEAT_SEARCH_EXTRA
838 /* Setup for match and 'hlsearch' highlighting. Disable any previous
839 * match */
840 cur = wp->w_match_head;
841 while (cur != NULL)
843 cur->hl.rm = cur->match;
844 if (cur->hlg_id == 0)
845 cur->hl.attr = 0;
846 else
847 cur->hl.attr = syn_id2attr(cur->hlg_id);
848 cur->hl.buf = buf;
849 cur->hl.lnum = 0;
850 cur->hl.first_lnum = 0;
851 # ifdef FEAT_RELTIME
852 /* Set the time limit to 'redrawtime'. */
853 profile_setlimit(p_rdt, &(cur->hl.tm));
854 # endif
855 cur = cur->next;
857 search_hl.buf = buf;
858 search_hl.lnum = 0;
859 search_hl.first_lnum = 0;
860 /* time limit is set at the toplevel, for all windows */
861 #endif
863 #ifdef FEAT_LINEBREAK
864 /* Force redraw when width of 'number' column changes. */
865 i = wp->w_p_nu ? number_width(wp) : 0;
866 if (wp->w_nrwidth != i)
868 type = NOT_VALID;
869 wp->w_nrwidth = i;
871 else
872 #endif
874 if (buf->b_mod_set && buf->b_mod_xlines != 0 && wp->w_redraw_top != 0)
877 * When there are both inserted/deleted lines and specific lines to be
878 * redrawn, w_redraw_top and w_redraw_bot may be invalid, just redraw
879 * everything (only happens when redrawing is off for while).
881 type = NOT_VALID;
883 else
886 * Set mod_top to the first line that needs displaying because of
887 * changes. Set mod_bot to the first line after the changes.
889 mod_top = wp->w_redraw_top;
890 if (wp->w_redraw_bot != 0)
891 mod_bot = wp->w_redraw_bot + 1;
892 else
893 mod_bot = 0;
894 wp->w_redraw_top = 0; /* reset for next time */
895 wp->w_redraw_bot = 0;
896 if (buf->b_mod_set)
898 if (mod_top == 0 || mod_top > buf->b_mod_top)
900 mod_top = buf->b_mod_top;
901 #ifdef FEAT_SYN_HL
902 /* Need to redraw lines above the change that may be included
903 * in a pattern match. */
904 if (syntax_present(buf))
906 mod_top -= buf->b_syn_sync_linebreaks;
907 if (mod_top < 1)
908 mod_top = 1;
910 #endif
912 if (mod_bot == 0 || mod_bot < buf->b_mod_bot)
913 mod_bot = buf->b_mod_bot;
915 #ifdef FEAT_SEARCH_EXTRA
916 /* When 'hlsearch' is on and using a multi-line search pattern, a
917 * change in one line may make the Search highlighting in a
918 * previous line invalid. Simple solution: redraw all visible
919 * lines above the change.
920 * Same for a match pattern.
922 if (search_hl.rm.regprog != NULL
923 && re_multiline(search_hl.rm.regprog))
924 top_to_mod = TRUE;
925 else
927 cur = wp->w_match_head;
928 while (cur != NULL)
930 if (cur->match.regprog != NULL
931 && re_multiline(cur->match.regprog))
933 top_to_mod = TRUE;
934 break;
936 cur = cur->next;
939 #endif
941 #ifdef FEAT_FOLDING
942 if (mod_top != 0 && hasAnyFolding(wp))
944 linenr_T lnumt, lnumb;
947 * A change in a line can cause lines above it to become folded or
948 * unfolded. Find the top most buffer line that may be affected.
949 * If the line was previously folded and displayed, get the first
950 * line of that fold. If the line is folded now, get the first
951 * folded line. Use the minimum of these two.
954 /* Find last valid w_lines[] entry above mod_top. Set lnumt to
955 * the line below it. If there is no valid entry, use w_topline.
956 * Find the first valid w_lines[] entry below mod_bot. Set lnumb
957 * to this line. If there is no valid entry, use MAXLNUM. */
958 lnumt = wp->w_topline;
959 lnumb = MAXLNUM;
960 for (i = 0; i < wp->w_lines_valid; ++i)
961 if (wp->w_lines[i].wl_valid)
963 if (wp->w_lines[i].wl_lastlnum < mod_top)
964 lnumt = wp->w_lines[i].wl_lastlnum + 1;
965 if (lnumb == MAXLNUM && wp->w_lines[i].wl_lnum >= mod_bot)
967 lnumb = wp->w_lines[i].wl_lnum;
968 /* When there is a fold column it might need updating
969 * in the next line ("J" just above an open fold). */
970 if (wp->w_p_fdc > 0)
971 ++lnumb;
975 (void)hasFoldingWin(wp, mod_top, &mod_top, NULL, TRUE, NULL);
976 if (mod_top > lnumt)
977 mod_top = lnumt;
979 /* Now do the same for the bottom line (one above mod_bot). */
980 --mod_bot;
981 (void)hasFoldingWin(wp, mod_bot, NULL, &mod_bot, TRUE, NULL);
982 ++mod_bot;
983 if (mod_bot < lnumb)
984 mod_bot = lnumb;
986 #endif
988 /* When a change starts above w_topline and the end is below
989 * w_topline, start redrawing at w_topline.
990 * If the end of the change is above w_topline: do like no change was
991 * made, but redraw the first line to find changes in syntax. */
992 if (mod_top != 0 && mod_top < wp->w_topline)
994 if (mod_bot > wp->w_topline)
995 mod_top = wp->w_topline;
996 #ifdef FEAT_SYN_HL
997 else if (syntax_present(buf))
998 top_end = 1;
999 #endif
1002 /* When line numbers are displayed need to redraw all lines below
1003 * inserted/deleted lines. */
1004 if (mod_top != 0 && buf->b_mod_xlines != 0 && wp->w_p_nu)
1005 mod_bot = MAXLNUM;
1009 * When only displaying the lines at the top, set top_end. Used when
1010 * window has scrolled down for msg_scrolled.
1012 if (type == REDRAW_TOP)
1014 j = 0;
1015 for (i = 0; i < wp->w_lines_valid; ++i)
1017 j += wp->w_lines[i].wl_size;
1018 if (j >= wp->w_upd_rows)
1020 top_end = j;
1021 break;
1024 if (top_end == 0)
1025 /* not found (cannot happen?): redraw everything */
1026 type = NOT_VALID;
1027 else
1028 /* top area defined, the rest is VALID */
1029 type = VALID;
1032 /* Trick: we want to avoid clearing the screen twice. screenclear() will
1033 * set "screen_cleared" to TRUE. The special value MAYBE (which is still
1034 * non-zero and thus not FALSE) will indicate that screenclear() was not
1035 * called. */
1036 if (screen_cleared)
1037 screen_cleared = MAYBE;
1040 * If there are no changes on the screen that require a complete redraw,
1041 * handle three cases:
1042 * 1: we are off the top of the screen by a few lines: scroll down
1043 * 2: wp->w_topline is below wp->w_lines[0].wl_lnum: may scroll up
1044 * 3: wp->w_topline is wp->w_lines[0].wl_lnum: find first entry in
1045 * w_lines[] that needs updating.
1047 if ((type == VALID || type == SOME_VALID
1048 || type == INVERTED || type == INVERTED_ALL)
1049 #ifdef FEAT_DIFF
1050 && !wp->w_botfill && !wp->w_old_botfill
1051 #endif
1054 if (mod_top != 0 && wp->w_topline == mod_top)
1057 * w_topline is the first changed line, the scrolling will be done
1058 * further down.
1061 else if (wp->w_lines[0].wl_valid
1062 && (wp->w_topline < wp->w_lines[0].wl_lnum
1063 #ifdef FEAT_DIFF
1064 || (wp->w_topline == wp->w_lines[0].wl_lnum
1065 && wp->w_topfill > wp->w_old_topfill)
1066 #endif
1070 * New topline is above old topline: May scroll down.
1072 #ifdef FEAT_FOLDING
1073 if (hasAnyFolding(wp))
1075 linenr_T ln;
1077 /* count the number of lines we are off, counting a sequence
1078 * of folded lines as one */
1079 j = 0;
1080 for (ln = wp->w_topline; ln < wp->w_lines[0].wl_lnum; ++ln)
1082 ++j;
1083 if (j >= wp->w_height - 2)
1084 break;
1085 (void)hasFoldingWin(wp, ln, NULL, &ln, TRUE, NULL);
1088 else
1089 #endif
1090 j = wp->w_lines[0].wl_lnum - wp->w_topline;
1091 if (j < wp->w_height - 2) /* not too far off */
1093 i = plines_m_win(wp, wp->w_topline, wp->w_lines[0].wl_lnum - 1);
1094 #ifdef FEAT_DIFF
1095 /* insert extra lines for previously invisible filler lines */
1096 if (wp->w_lines[0].wl_lnum != wp->w_topline)
1097 i += diff_check_fill(wp, wp->w_lines[0].wl_lnum)
1098 - wp->w_old_topfill;
1099 #endif
1100 if (i < wp->w_height - 2) /* less than a screen off */
1103 * Try to insert the correct number of lines.
1104 * If not the last window, delete the lines at the bottom.
1105 * win_ins_lines may fail when the terminal can't do it.
1107 if (i > 0)
1108 check_for_delay(FALSE);
1109 if (win_ins_lines(wp, 0, i, FALSE, wp == firstwin) == OK)
1111 if (wp->w_lines_valid != 0)
1113 /* Need to update rows that are new, stop at the
1114 * first one that scrolled down. */
1115 top_end = i;
1116 #ifdef FEAT_VISUAL
1117 scrolled_down = TRUE;
1118 #endif
1120 /* Move the entries that were scrolled, disable
1121 * the entries for the lines to be redrawn. */
1122 if ((wp->w_lines_valid += j) > wp->w_height)
1123 wp->w_lines_valid = wp->w_height;
1124 for (idx = wp->w_lines_valid; idx - j >= 0; idx--)
1125 wp->w_lines[idx] = wp->w_lines[idx - j];
1126 while (idx >= 0)
1127 wp->w_lines[idx--].wl_valid = FALSE;
1130 else
1131 mid_start = 0; /* redraw all lines */
1133 else
1134 mid_start = 0; /* redraw all lines */
1136 else
1137 mid_start = 0; /* redraw all lines */
1139 else
1142 * New topline is at or below old topline: May scroll up.
1143 * When topline didn't change, find first entry in w_lines[] that
1144 * needs updating.
1147 /* try to find wp->w_topline in wp->w_lines[].wl_lnum */
1148 j = -1;
1149 row = 0;
1150 for (i = 0; i < wp->w_lines_valid; i++)
1152 if (wp->w_lines[i].wl_valid
1153 && wp->w_lines[i].wl_lnum == wp->w_topline)
1155 j = i;
1156 break;
1158 row += wp->w_lines[i].wl_size;
1160 if (j == -1)
1162 /* if wp->w_topline is not in wp->w_lines[].wl_lnum redraw all
1163 * lines */
1164 mid_start = 0;
1166 else
1169 * Try to delete the correct number of lines.
1170 * wp->w_topline is at wp->w_lines[i].wl_lnum.
1172 #ifdef FEAT_DIFF
1173 /* If the topline didn't change, delete old filler lines,
1174 * otherwise delete filler lines of the new topline... */
1175 if (wp->w_lines[0].wl_lnum == wp->w_topline)
1176 row += wp->w_old_topfill;
1177 else
1178 row += diff_check_fill(wp, wp->w_topline);
1179 /* ... but don't delete new filler lines. */
1180 row -= wp->w_topfill;
1181 #endif
1182 if (row > 0)
1184 check_for_delay(FALSE);
1185 if (win_del_lines(wp, 0, row, FALSE, wp == firstwin) == OK)
1186 bot_start = wp->w_height - row;
1187 else
1188 mid_start = 0; /* redraw all lines */
1190 if ((row == 0 || bot_start < 999) && wp->w_lines_valid != 0)
1193 * Skip the lines (below the deleted lines) that are still
1194 * valid and don't need redrawing. Copy their info
1195 * upwards, to compensate for the deleted lines. Set
1196 * bot_start to the first row that needs redrawing.
1198 bot_start = 0;
1199 idx = 0;
1200 for (;;)
1202 wp->w_lines[idx] = wp->w_lines[j];
1203 /* stop at line that didn't fit, unless it is still
1204 * valid (no lines deleted) */
1205 if (row > 0 && bot_start + row
1206 + (int)wp->w_lines[j].wl_size > wp->w_height)
1208 wp->w_lines_valid = idx + 1;
1209 break;
1211 bot_start += wp->w_lines[idx++].wl_size;
1213 /* stop at the last valid entry in w_lines[].wl_size */
1214 if (++j >= wp->w_lines_valid)
1216 wp->w_lines_valid = idx;
1217 break;
1220 #ifdef FEAT_DIFF
1221 /* Correct the first entry for filler lines at the top
1222 * when it won't get updated below. */
1223 if (wp->w_p_diff && bot_start > 0)
1224 wp->w_lines[0].wl_size =
1225 plines_win_nofill(wp, wp->w_topline, TRUE)
1226 + wp->w_topfill;
1227 #endif
1232 /* When starting redraw in the first line, redraw all lines. When
1233 * there is only one window it's probably faster to clear the screen
1234 * first. */
1235 if (mid_start == 0)
1237 mid_end = wp->w_height;
1238 if (lastwin == firstwin)
1240 /* Clear the screen when it was not done by win_del_lines() or
1241 * win_ins_lines() above, "screen_cleared" is FALSE or MAYBE
1242 * then. */
1243 if (screen_cleared != TRUE)
1244 screenclear();
1245 #ifdef FEAT_WINDOWS
1246 /* The screen was cleared, redraw the tab pages line. */
1247 if (redraw_tabline)
1248 draw_tabline();
1249 #endif
1253 /* When win_del_lines() or win_ins_lines() caused the screen to be
1254 * cleared (only happens for the first window) or when screenclear()
1255 * was called directly above, "must_redraw" will have been set to
1256 * NOT_VALID, need to reset it here to avoid redrawing twice. */
1257 if (screen_cleared == TRUE)
1258 must_redraw = 0;
1260 else
1262 /* Not VALID or INVERTED: redraw all lines. */
1263 mid_start = 0;
1264 mid_end = wp->w_height;
1267 if (type == SOME_VALID)
1269 /* SOME_VALID: redraw all lines. */
1270 mid_start = 0;
1271 mid_end = wp->w_height;
1272 type = NOT_VALID;
1275 #ifdef FEAT_VISUAL
1276 /* check if we are updating or removing the inverted part */
1277 if ((VIsual_active && buf == curwin->w_buffer)
1278 || (wp->w_old_cursor_lnum != 0 && type != NOT_VALID))
1280 linenr_T from, to;
1282 if (VIsual_active)
1284 if (VIsual_active
1285 && (VIsual_mode != wp->w_old_visual_mode
1286 || type == INVERTED_ALL))
1289 * If the type of Visual selection changed, redraw the whole
1290 * selection. Also when the ownership of the X selection is
1291 * gained or lost.
1293 if (curwin->w_cursor.lnum < VIsual.lnum)
1295 from = curwin->w_cursor.lnum;
1296 to = VIsual.lnum;
1298 else
1300 from = VIsual.lnum;
1301 to = curwin->w_cursor.lnum;
1303 /* redraw more when the cursor moved as well */
1304 if (wp->w_old_cursor_lnum < from)
1305 from = wp->w_old_cursor_lnum;
1306 if (wp->w_old_cursor_lnum > to)
1307 to = wp->w_old_cursor_lnum;
1308 if (wp->w_old_visual_lnum < from)
1309 from = wp->w_old_visual_lnum;
1310 if (wp->w_old_visual_lnum > to)
1311 to = wp->w_old_visual_lnum;
1313 else
1316 * Find the line numbers that need to be updated: The lines
1317 * between the old cursor position and the current cursor
1318 * position. Also check if the Visual position changed.
1320 if (curwin->w_cursor.lnum < wp->w_old_cursor_lnum)
1322 from = curwin->w_cursor.lnum;
1323 to = wp->w_old_cursor_lnum;
1325 else
1327 from = wp->w_old_cursor_lnum;
1328 to = curwin->w_cursor.lnum;
1329 if (from == 0) /* Visual mode just started */
1330 from = to;
1333 if (VIsual.lnum != wp->w_old_visual_lnum
1334 || VIsual.col != wp->w_old_visual_col)
1336 if (wp->w_old_visual_lnum < from
1337 && wp->w_old_visual_lnum != 0)
1338 from = wp->w_old_visual_lnum;
1339 if (wp->w_old_visual_lnum > to)
1340 to = wp->w_old_visual_lnum;
1341 if (VIsual.lnum < from)
1342 from = VIsual.lnum;
1343 if (VIsual.lnum > to)
1344 to = VIsual.lnum;
1349 * If in block mode and changed column or curwin->w_curswant:
1350 * update all lines.
1351 * First compute the actual start and end column.
1353 if (VIsual_mode == Ctrl_V)
1355 colnr_T fromc, toc;
1357 getvcols(wp, &VIsual, &curwin->w_cursor, &fromc, &toc);
1358 ++toc;
1359 if (curwin->w_curswant == MAXCOL)
1360 toc = MAXCOL;
1362 if (fromc != wp->w_old_cursor_fcol
1363 || toc != wp->w_old_cursor_lcol)
1365 if (from > VIsual.lnum)
1366 from = VIsual.lnum;
1367 if (to < VIsual.lnum)
1368 to = VIsual.lnum;
1370 wp->w_old_cursor_fcol = fromc;
1371 wp->w_old_cursor_lcol = toc;
1374 else
1376 /* Use the line numbers of the old Visual area. */
1377 if (wp->w_old_cursor_lnum < wp->w_old_visual_lnum)
1379 from = wp->w_old_cursor_lnum;
1380 to = wp->w_old_visual_lnum;
1382 else
1384 from = wp->w_old_visual_lnum;
1385 to = wp->w_old_cursor_lnum;
1390 * There is no need to update lines above the top of the window.
1392 if (from < wp->w_topline)
1393 from = wp->w_topline;
1396 * If we know the value of w_botline, use it to restrict the update to
1397 * the lines that are visible in the window.
1399 if (wp->w_valid & VALID_BOTLINE)
1401 if (from >= wp->w_botline)
1402 from = wp->w_botline - 1;
1403 if (to >= wp->w_botline)
1404 to = wp->w_botline - 1;
1408 * Find the minimal part to be updated.
1409 * Watch out for scrolling that made entries in w_lines[] invalid.
1410 * E.g., CTRL-U makes the first half of w_lines[] invalid and sets
1411 * top_end; need to redraw from top_end to the "to" line.
1412 * A middle mouse click with a Visual selection may change the text
1413 * above the Visual area and reset wl_valid, do count these for
1414 * mid_end (in srow).
1416 if (mid_start > 0)
1418 lnum = wp->w_topline;
1419 idx = 0;
1420 srow = 0;
1421 if (scrolled_down)
1422 mid_start = top_end;
1423 else
1424 mid_start = 0;
1425 while (lnum < from && idx < wp->w_lines_valid) /* find start */
1427 if (wp->w_lines[idx].wl_valid)
1428 mid_start += wp->w_lines[idx].wl_size;
1429 else if (!scrolled_down)
1430 srow += wp->w_lines[idx].wl_size;
1431 ++idx;
1432 # ifdef FEAT_FOLDING
1433 if (idx < wp->w_lines_valid && wp->w_lines[idx].wl_valid)
1434 lnum = wp->w_lines[idx].wl_lnum;
1435 else
1436 # endif
1437 ++lnum;
1439 srow += mid_start;
1440 mid_end = wp->w_height;
1441 for ( ; idx < wp->w_lines_valid; ++idx) /* find end */
1443 if (wp->w_lines[idx].wl_valid
1444 && wp->w_lines[idx].wl_lnum >= to + 1)
1446 /* Only update until first row of this line */
1447 mid_end = srow;
1448 break;
1450 srow += wp->w_lines[idx].wl_size;
1455 if (VIsual_active && buf == curwin->w_buffer)
1457 wp->w_old_visual_mode = VIsual_mode;
1458 wp->w_old_cursor_lnum = curwin->w_cursor.lnum;
1459 wp->w_old_visual_lnum = VIsual.lnum;
1460 wp->w_old_visual_col = VIsual.col;
1461 wp->w_old_curswant = curwin->w_curswant;
1463 else
1465 wp->w_old_visual_mode = 0;
1466 wp->w_old_cursor_lnum = 0;
1467 wp->w_old_visual_lnum = 0;
1468 wp->w_old_visual_col = 0;
1470 #endif /* FEAT_VISUAL */
1472 #if defined(FEAT_SYN_HL) || defined(FEAT_SEARCH_EXTRA)
1473 /* reset got_int, otherwise regexp won't work */
1474 save_got_int = got_int;
1475 got_int = 0;
1476 #endif
1477 #ifdef FEAT_FOLDING
1478 win_foldinfo.fi_level = 0;
1479 #endif
1482 * Update all the window rows.
1484 idx = 0; /* first entry in w_lines[].wl_size */
1485 row = 0;
1486 srow = 0;
1487 lnum = wp->w_topline; /* first line shown in window */
1488 for (;;)
1490 /* stop updating when reached the end of the window (check for _past_
1491 * the end of the window is at the end of the loop) */
1492 if (row == wp->w_height)
1494 didline = TRUE;
1495 break;
1498 /* stop updating when hit the end of the file */
1499 if (lnum > buf->b_ml.ml_line_count)
1501 eof = TRUE;
1502 break;
1505 /* Remember the starting row of the line that is going to be dealt
1506 * with. It is used further down when the line doesn't fit. */
1507 srow = row;
1510 * Update a line when it is in an area that needs updating, when it
1511 * has changes or w_lines[idx] is invalid.
1512 * bot_start may be halfway a wrapped line after using
1513 * win_del_lines(), check if the current line includes it.
1514 * When syntax folding is being used, the saved syntax states will
1515 * already have been updated, we can't see where the syntax state is
1516 * the same again, just update until the end of the window.
1518 if (row < top_end
1519 || (row >= mid_start && row < mid_end)
1520 #ifdef FEAT_SEARCH_EXTRA
1521 || top_to_mod
1522 #endif
1523 || idx >= wp->w_lines_valid
1524 || (row + wp->w_lines[idx].wl_size > bot_start)
1525 || (mod_top != 0
1526 && (lnum == mod_top
1527 || (lnum >= mod_top
1528 && (lnum < mod_bot
1529 #ifdef FEAT_SYN_HL
1530 || did_update == DID_FOLD
1531 || (did_update == DID_LINE
1532 && syntax_present(buf)
1533 && (
1534 # ifdef FEAT_FOLDING
1535 (foldmethodIsSyntax(wp)
1536 && hasAnyFolding(wp)) ||
1537 # endif
1538 syntax_check_changed(lnum)))
1539 #endif
1540 )))))
1542 #ifdef FEAT_SEARCH_EXTRA
1543 if (lnum == mod_top)
1544 top_to_mod = FALSE;
1545 #endif
1548 * When at start of changed lines: May scroll following lines
1549 * up or down to minimize redrawing.
1550 * Don't do this when the change continues until the end.
1551 * Don't scroll when dollar_vcol is non-zero, keep the "$".
1553 if (lnum == mod_top
1554 && mod_bot != MAXLNUM
1555 && !(dollar_vcol != 0 && mod_bot == mod_top + 1))
1557 int old_rows = 0;
1558 int new_rows = 0;
1559 int xtra_rows;
1560 linenr_T l;
1562 /* Count the old number of window rows, using w_lines[], which
1563 * should still contain the sizes for the lines as they are
1564 * currently displayed. */
1565 for (i = idx; i < wp->w_lines_valid; ++i)
1567 /* Only valid lines have a meaningful wl_lnum. Invalid
1568 * lines are part of the changed area. */
1569 if (wp->w_lines[i].wl_valid
1570 && wp->w_lines[i].wl_lnum == mod_bot)
1571 break;
1572 old_rows += wp->w_lines[i].wl_size;
1573 #ifdef FEAT_FOLDING
1574 if (wp->w_lines[i].wl_valid
1575 && wp->w_lines[i].wl_lastlnum + 1 == mod_bot)
1577 /* Must have found the last valid entry above mod_bot.
1578 * Add following invalid entries. */
1579 ++i;
1580 while (i < wp->w_lines_valid
1581 && !wp->w_lines[i].wl_valid)
1582 old_rows += wp->w_lines[i++].wl_size;
1583 break;
1585 #endif
1588 if (i >= wp->w_lines_valid)
1590 /* We can't find a valid line below the changed lines,
1591 * need to redraw until the end of the window.
1592 * Inserting/deleting lines has no use. */
1593 bot_start = 0;
1595 else
1597 /* Able to count old number of rows: Count new window
1598 * rows, and may insert/delete lines */
1599 j = idx;
1600 for (l = lnum; l < mod_bot; ++l)
1602 #ifdef FEAT_FOLDING
1603 if (hasFoldingWin(wp, l, NULL, &l, TRUE, NULL))
1604 ++new_rows;
1605 else
1606 #endif
1607 #ifdef FEAT_DIFF
1608 if (l == wp->w_topline)
1609 new_rows += plines_win_nofill(wp, l, TRUE)
1610 + wp->w_topfill;
1611 else
1612 #endif
1613 new_rows += plines_win(wp, l, TRUE);
1614 ++j;
1615 if (new_rows > wp->w_height - row - 2)
1617 /* it's getting too much, must redraw the rest */
1618 new_rows = 9999;
1619 break;
1622 xtra_rows = new_rows - old_rows;
1623 if (xtra_rows < 0)
1625 /* May scroll text up. If there is not enough
1626 * remaining text or scrolling fails, must redraw the
1627 * rest. If scrolling works, must redraw the text
1628 * below the scrolled text. */
1629 if (row - xtra_rows >= wp->w_height - 2)
1630 mod_bot = MAXLNUM;
1631 else
1633 check_for_delay(FALSE);
1634 if (win_del_lines(wp, row,
1635 -xtra_rows, FALSE, FALSE) == FAIL)
1636 mod_bot = MAXLNUM;
1637 else
1638 bot_start = wp->w_height + xtra_rows;
1641 else if (xtra_rows > 0)
1643 /* May scroll text down. If there is not enough
1644 * remaining text of scrolling fails, must redraw the
1645 * rest. */
1646 if (row + xtra_rows >= wp->w_height - 2)
1647 mod_bot = MAXLNUM;
1648 else
1650 check_for_delay(FALSE);
1651 if (win_ins_lines(wp, row + old_rows,
1652 xtra_rows, FALSE, FALSE) == FAIL)
1653 mod_bot = MAXLNUM;
1654 else if (top_end > row + old_rows)
1655 /* Scrolled the part at the top that requires
1656 * updating down. */
1657 top_end += xtra_rows;
1661 /* When not updating the rest, may need to move w_lines[]
1662 * entries. */
1663 if (mod_bot != MAXLNUM && i != j)
1665 if (j < i)
1667 int x = row + new_rows;
1669 /* move entries in w_lines[] upwards */
1670 for (;;)
1672 /* stop at last valid entry in w_lines[] */
1673 if (i >= wp->w_lines_valid)
1675 wp->w_lines_valid = j;
1676 break;
1678 wp->w_lines[j] = wp->w_lines[i];
1679 /* stop at a line that won't fit */
1680 if (x + (int)wp->w_lines[j].wl_size
1681 > wp->w_height)
1683 wp->w_lines_valid = j + 1;
1684 break;
1686 x += wp->w_lines[j++].wl_size;
1687 ++i;
1689 if (bot_start > x)
1690 bot_start = x;
1692 else /* j > i */
1694 /* move entries in w_lines[] downwards */
1695 j -= i;
1696 wp->w_lines_valid += j;
1697 if (wp->w_lines_valid > wp->w_height)
1698 wp->w_lines_valid = wp->w_height;
1699 for (i = wp->w_lines_valid; i - j >= idx; --i)
1700 wp->w_lines[i] = wp->w_lines[i - j];
1702 /* The w_lines[] entries for inserted lines are
1703 * now invalid, but wl_size may be used above.
1704 * Reset to zero. */
1705 while (i >= idx)
1707 wp->w_lines[i].wl_size = 0;
1708 wp->w_lines[i--].wl_valid = FALSE;
1715 #ifdef FEAT_FOLDING
1717 * When lines are folded, display one line for all of them.
1718 * Otherwise, display normally (can be several display lines when
1719 * 'wrap' is on).
1721 fold_count = foldedCount(wp, lnum, &win_foldinfo);
1722 if (fold_count != 0)
1724 fold_line(wp, fold_count, &win_foldinfo, lnum, row);
1725 ++row;
1726 --fold_count;
1727 wp->w_lines[idx].wl_folded = TRUE;
1728 wp->w_lines[idx].wl_lastlnum = lnum + fold_count;
1729 # ifdef FEAT_SYN_HL
1730 did_update = DID_FOLD;
1731 # endif
1733 else
1734 #endif
1735 if (idx < wp->w_lines_valid
1736 && wp->w_lines[idx].wl_valid
1737 && wp->w_lines[idx].wl_lnum == lnum
1738 && lnum > wp->w_topline
1739 && !(dy_flags & DY_LASTLINE)
1740 && srow + wp->w_lines[idx].wl_size > wp->w_height
1741 #ifdef FEAT_DIFF
1742 && diff_check_fill(wp, lnum) == 0
1743 #endif
1746 /* This line is not going to fit. Don't draw anything here,
1747 * will draw "@ " lines below. */
1748 row = wp->w_height + 1;
1750 else
1752 #ifdef FEAT_SEARCH_EXTRA
1753 prepare_search_hl(wp, lnum);
1754 #endif
1755 #ifdef FEAT_SYN_HL
1756 /* Let the syntax stuff know we skipped a few lines. */
1757 if (syntax_last_parsed != 0 && syntax_last_parsed + 1 < lnum
1758 && syntax_present(buf))
1759 syntax_end_parsing(syntax_last_parsed + 1);
1760 #endif
1763 * Display one line.
1765 row = win_line(wp, lnum, srow, wp->w_height, mod_top == 0);
1767 #ifdef FEAT_FOLDING
1768 wp->w_lines[idx].wl_folded = FALSE;
1769 wp->w_lines[idx].wl_lastlnum = lnum;
1770 #endif
1771 #ifdef FEAT_SYN_HL
1772 did_update = DID_LINE;
1773 syntax_last_parsed = lnum;
1774 #endif
1777 wp->w_lines[idx].wl_lnum = lnum;
1778 wp->w_lines[idx].wl_valid = TRUE;
1779 if (row > wp->w_height) /* past end of screen */
1781 /* we may need the size of that too long line later on */
1782 if (dollar_vcol == 0)
1783 wp->w_lines[idx].wl_size = plines_win(wp, lnum, TRUE);
1784 ++idx;
1785 break;
1787 if (dollar_vcol == 0)
1788 wp->w_lines[idx].wl_size = row - srow;
1789 ++idx;
1790 #ifdef FEAT_FOLDING
1791 lnum += fold_count + 1;
1792 #else
1793 ++lnum;
1794 #endif
1796 else
1798 /* This line does not need updating, advance to the next one */
1799 row += wp->w_lines[idx++].wl_size;
1800 if (row > wp->w_height) /* past end of screen */
1801 break;
1802 #ifdef FEAT_FOLDING
1803 lnum = wp->w_lines[idx - 1].wl_lastlnum + 1;
1804 #else
1805 ++lnum;
1806 #endif
1807 #ifdef FEAT_SYN_HL
1808 did_update = DID_NONE;
1809 #endif
1812 if (lnum > buf->b_ml.ml_line_count)
1814 eof = TRUE;
1815 break;
1819 * End of loop over all window lines.
1823 if (idx > wp->w_lines_valid)
1824 wp->w_lines_valid = idx;
1826 #ifdef FEAT_SYN_HL
1828 * Let the syntax stuff know we stop parsing here.
1830 if (syntax_last_parsed != 0 && syntax_present(buf))
1831 syntax_end_parsing(syntax_last_parsed + 1);
1832 #endif
1835 * If we didn't hit the end of the file, and we didn't finish the last
1836 * line we were working on, then the line didn't fit.
1838 wp->w_empty_rows = 0;
1839 #ifdef FEAT_DIFF
1840 wp->w_filler_rows = 0;
1841 #endif
1842 if (!eof && !didline)
1844 if (lnum == wp->w_topline)
1847 * Single line that does not fit!
1848 * Don't overwrite it, it can be edited.
1850 wp->w_botline = lnum + 1;
1852 #ifdef FEAT_DIFF
1853 else if (diff_check_fill(wp, lnum) >= wp->w_height - srow)
1855 /* Window ends in filler lines. */
1856 wp->w_botline = lnum;
1857 wp->w_filler_rows = wp->w_height - srow;
1859 #endif
1860 else if (dy_flags & DY_LASTLINE) /* 'display' has "lastline" */
1863 * Last line isn't finished: Display "@@@" at the end.
1865 screen_fill(W_WINROW(wp) + wp->w_height - 1,
1866 W_WINROW(wp) + wp->w_height,
1867 (int)W_ENDCOL(wp) - 3, (int)W_ENDCOL(wp),
1868 '@', '@', hl_attr(HLF_AT));
1869 set_empty_rows(wp, srow);
1870 wp->w_botline = lnum;
1872 else
1874 win_draw_end(wp, '@', ' ', srow, wp->w_height, HLF_AT);
1875 wp->w_botline = lnum;
1878 else
1880 #ifdef FEAT_VERTSPLIT
1881 draw_vsep_win(wp, row);
1882 #endif
1883 if (eof) /* we hit the end of the file */
1885 wp->w_botline = buf->b_ml.ml_line_count + 1;
1886 #ifdef FEAT_DIFF
1887 j = diff_check_fill(wp, wp->w_botline);
1888 if (j > 0 && !wp->w_botfill)
1891 * Display filler lines at the end of the file
1893 if (char2cells(fill_diff) > 1)
1894 i = '-';
1895 else
1896 i = fill_diff;
1897 if (row + j > wp->w_height)
1898 j = wp->w_height - row;
1899 win_draw_end(wp, i, i, row, row + (int)j, HLF_DED);
1900 row += j;
1902 #endif
1904 else if (dollar_vcol == 0)
1905 wp->w_botline = lnum;
1907 /* make sure the rest of the screen is blank */
1908 /* put '~'s on rows that aren't part of the file. */
1909 win_draw_end(wp, '~', ' ', row, wp->w_height, HLF_AT);
1912 /* Reset the type of redrawing required, the window has been updated. */
1913 wp->w_redr_type = 0;
1914 #ifdef FEAT_DIFF
1915 wp->w_old_topfill = wp->w_topfill;
1916 wp->w_old_botfill = wp->w_botfill;
1917 #endif
1919 if (dollar_vcol == 0)
1922 * There is a trick with w_botline. If we invalidate it on each
1923 * change that might modify it, this will cause a lot of expensive
1924 * calls to plines() in update_topline() each time. Therefore the
1925 * value of w_botline is often approximated, and this value is used to
1926 * compute the value of w_topline. If the value of w_botline was
1927 * wrong, check that the value of w_topline is correct (cursor is on
1928 * the visible part of the text). If it's not, we need to redraw
1929 * again. Mostly this just means scrolling up a few lines, so it
1930 * doesn't look too bad. Only do this for the current window (where
1931 * changes are relevant).
1933 wp->w_valid |= VALID_BOTLINE;
1934 if (wp == curwin && wp->w_botline != old_botline && !recursive)
1936 recursive = TRUE;
1937 curwin->w_valid &= ~VALID_TOPLINE;
1938 update_topline(); /* may invalidate w_botline again */
1939 if (must_redraw != 0)
1941 /* Don't update for changes in buffer again. */
1942 i = curbuf->b_mod_set;
1943 curbuf->b_mod_set = FALSE;
1944 win_update(curwin);
1945 must_redraw = 0;
1946 curbuf->b_mod_set = i;
1948 recursive = FALSE;
1952 #if defined(FEAT_SYN_HL) || defined(FEAT_SEARCH_EXTRA)
1953 /* restore got_int, unless CTRL-C was hit while redrawing */
1954 if (!got_int)
1955 got_int = save_got_int;
1956 #endif
1959 #ifdef FEAT_SIGNS
1960 static int draw_signcolumn __ARGS((win_T *wp));
1963 * Return TRUE when window "wp" has a column to draw signs in.
1965 static int
1966 draw_signcolumn(wp)
1967 win_T *wp;
1969 return (wp->w_buffer->b_signlist != NULL
1970 # ifdef FEAT_NETBEANS_INTG
1971 || usingNetbeans
1972 # endif
1975 #endif
1978 * Clear the rest of the window and mark the unused lines with "c1". use "c2"
1979 * as the filler character.
1981 static void
1982 win_draw_end(wp, c1, c2, row, endrow, hl)
1983 win_T *wp;
1984 int c1;
1985 int c2;
1986 int row;
1987 int endrow;
1988 hlf_T hl;
1990 #if defined(FEAT_FOLDING) || defined(FEAT_SIGNS) || defined(FEAT_CMDWIN)
1991 int n = 0;
1992 # define FDC_OFF n
1993 #else
1994 # define FDC_OFF 0
1995 #endif
1997 #ifdef FEAT_RIGHTLEFT
1998 if (wp->w_p_rl)
2000 /* No check for cmdline window: should never be right-left. */
2001 # ifdef FEAT_FOLDING
2002 n = wp->w_p_fdc;
2004 if (n > 0)
2006 /* draw the fold column at the right */
2007 if (n > W_WIDTH(wp))
2008 n = W_WIDTH(wp);
2009 screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
2010 W_ENDCOL(wp) - n, (int)W_ENDCOL(wp),
2011 ' ', ' ', hl_attr(HLF_FC));
2013 # endif
2014 # ifdef FEAT_SIGNS
2015 if (draw_signcolumn(wp))
2017 int nn = n + 2;
2019 /* draw the sign column left of the fold column */
2020 if (nn > W_WIDTH(wp))
2021 nn = W_WIDTH(wp);
2022 screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
2023 W_ENDCOL(wp) - nn, (int)W_ENDCOL(wp) - n,
2024 ' ', ' ', hl_attr(HLF_SC));
2025 n = nn;
2027 # endif
2028 screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
2029 W_WINCOL(wp), W_ENDCOL(wp) - 1 - FDC_OFF,
2030 c2, c2, hl_attr(hl));
2031 screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
2032 W_ENDCOL(wp) - 1 - FDC_OFF, W_ENDCOL(wp) - FDC_OFF,
2033 c1, c2, hl_attr(hl));
2035 else
2036 #endif
2038 #ifdef FEAT_CMDWIN
2039 if (cmdwin_type != 0 && wp == curwin)
2041 /* draw the cmdline character in the leftmost column */
2042 n = 1;
2043 if (n > wp->w_width)
2044 n = wp->w_width;
2045 screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
2046 W_WINCOL(wp), (int)W_WINCOL(wp) + n,
2047 cmdwin_type, ' ', hl_attr(HLF_AT));
2049 #endif
2050 #ifdef FEAT_FOLDING
2051 if (wp->w_p_fdc > 0)
2053 int nn = n + wp->w_p_fdc;
2055 /* draw the fold column at the left */
2056 if (nn > W_WIDTH(wp))
2057 nn = W_WIDTH(wp);
2058 screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
2059 W_WINCOL(wp) + n, (int)W_WINCOL(wp) + nn,
2060 ' ', ' ', hl_attr(HLF_FC));
2061 n = nn;
2063 #endif
2064 #ifdef FEAT_SIGNS
2065 if (draw_signcolumn(wp))
2067 int nn = n + 2;
2069 /* draw the sign column after the fold column */
2070 if (nn > W_WIDTH(wp))
2071 nn = W_WIDTH(wp);
2072 screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
2073 W_WINCOL(wp) + n, (int)W_WINCOL(wp) + nn,
2074 ' ', ' ', hl_attr(HLF_SC));
2075 n = nn;
2077 #endif
2078 screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
2079 W_WINCOL(wp) + FDC_OFF, (int)W_ENDCOL(wp),
2080 c1, c2, hl_attr(hl));
2082 set_empty_rows(wp, row);
2085 #ifdef FEAT_FOLDING
2087 * Display one folded line.
2089 static void
2090 fold_line(wp, fold_count, foldinfo, lnum, row)
2091 win_T *wp;
2092 long fold_count;
2093 foldinfo_T *foldinfo;
2094 linenr_T lnum;
2095 int row;
2097 char_u buf[51];
2098 pos_T *top, *bot;
2099 linenr_T lnume = lnum + fold_count - 1;
2100 int len;
2101 char_u *text;
2102 int fdc;
2103 int col;
2104 int txtcol;
2105 int off = (int)(current_ScreenLine - ScreenLines);
2106 int ri;
2108 /* Build the fold line:
2109 * 1. Add the cmdwin_type for the command-line window
2110 * 2. Add the 'foldcolumn'
2111 * 3. Add the 'number' column
2112 * 4. Compose the text
2113 * 5. Add the text
2114 * 6. set highlighting for the Visual area an other text
2116 col = 0;
2119 * 1. Add the cmdwin_type for the command-line window
2120 * Ignores 'rightleft', this window is never right-left.
2122 #ifdef FEAT_CMDWIN
2123 if (cmdwin_type != 0 && wp == curwin)
2125 ScreenLines[off] = cmdwin_type;
2126 ScreenAttrs[off] = hl_attr(HLF_AT);
2127 #ifdef FEAT_MBYTE
2128 if (enc_utf8)
2129 ScreenLinesUC[off] = 0;
2130 #endif
2131 ++col;
2133 #endif
2136 * 2. Add the 'foldcolumn'
2138 fdc = wp->w_p_fdc;
2139 if (fdc > W_WIDTH(wp) - col)
2140 fdc = W_WIDTH(wp) - col;
2141 if (fdc > 0)
2143 fill_foldcolumn(buf, wp, TRUE, lnum);
2144 #ifdef FEAT_RIGHTLEFT
2145 if (wp->w_p_rl)
2147 int i;
2149 copy_text_attr(off + W_WIDTH(wp) - fdc - col, buf, fdc,
2150 hl_attr(HLF_FC));
2151 /* reverse the fold column */
2152 for (i = 0; i < fdc; ++i)
2153 ScreenLines[off + W_WIDTH(wp) - i - 1 - col] = buf[i];
2155 else
2156 #endif
2157 copy_text_attr(off + col, buf, fdc, hl_attr(HLF_FC));
2158 col += fdc;
2161 #ifdef FEAT_RIGHTLEFT
2162 # define RL_MEMSET(p, v, l) if (wp->w_p_rl) \
2163 for (ri = 0; ri < l; ++ri) \
2164 ScreenAttrs[off + (W_WIDTH(wp) - (p) - (l)) + ri] = v; \
2165 else \
2166 for (ri = 0; ri < l; ++ri) \
2167 ScreenAttrs[off + (p) + ri] = v
2168 #else
2169 # define RL_MEMSET(p, v, l) for (ri = 0; ri < l; ++ri) \
2170 ScreenAttrs[off + (p) + ri] = v
2171 #endif
2173 /* Set all attributes of the 'number' column and the text */
2174 RL_MEMSET(col, hl_attr(HLF_FL), W_WIDTH(wp) - col);
2176 #ifdef FEAT_SIGNS
2177 /* If signs are being displayed, add two spaces. */
2178 if (draw_signcolumn(wp))
2180 len = W_WIDTH(wp) - col;
2181 if (len > 0)
2183 if (len > 2)
2184 len = 2;
2185 # ifdef FEAT_RIGHTLEFT
2186 if (wp->w_p_rl)
2187 /* the line number isn't reversed */
2188 copy_text_attr(off + W_WIDTH(wp) - len - col,
2189 (char_u *)" ", len, hl_attr(HLF_FL));
2190 else
2191 # endif
2192 copy_text_attr(off + col, (char_u *)" ", len, hl_attr(HLF_FL));
2193 col += len;
2196 #endif
2199 * 3. Add the 'number' column
2201 if (wp->w_p_nu)
2203 len = W_WIDTH(wp) - col;
2204 if (len > 0)
2206 int w = number_width(wp);
2208 if (len > w + 1)
2209 len = w + 1;
2210 sprintf((char *)buf, "%*ld ", w, (long)lnum);
2211 #ifdef FEAT_RIGHTLEFT
2212 if (wp->w_p_rl)
2213 /* the line number isn't reversed */
2214 copy_text_attr(off + W_WIDTH(wp) - len - col, buf, len,
2215 hl_attr(HLF_FL));
2216 else
2217 #endif
2218 copy_text_attr(off + col, buf, len, hl_attr(HLF_FL));
2219 col += len;
2224 * 4. Compose the folded-line string with 'foldtext', if set.
2226 text = get_foldtext(wp, lnum, lnume, foldinfo, buf);
2228 txtcol = col; /* remember where text starts */
2231 * 5. move the text to current_ScreenLine. Fill up with "fill_fold".
2232 * Right-left text is put in columns 0 - number-col, normal text is put
2233 * in columns number-col - window-width.
2235 #ifdef FEAT_MBYTE
2236 if (has_mbyte)
2238 int cells;
2239 int u8c, u8cc[MAX_MCO];
2240 int i;
2241 int idx;
2242 int c_len;
2243 char_u *p;
2244 # ifdef FEAT_ARABIC
2245 int prev_c = 0; /* previous Arabic character */
2246 int prev_c1 = 0; /* first composing char for prev_c */
2247 # endif
2249 # ifdef FEAT_RIGHTLEFT
2250 if (wp->w_p_rl)
2251 idx = off;
2252 else
2253 # endif
2254 idx = off + col;
2256 /* Store multibyte characters in ScreenLines[] et al. correctly. */
2257 for (p = text; *p != NUL; )
2259 cells = (*mb_ptr2cells)(p);
2260 c_len = (*mb_ptr2len)(p);
2261 if (col + cells > W_WIDTH(wp)
2262 # ifdef FEAT_RIGHTLEFT
2263 - (wp->w_p_rl ? col : 0)
2264 # endif
2266 break;
2267 ScreenLines[idx] = *p;
2268 if (enc_utf8)
2270 u8c = utfc_ptr2char(p, u8cc);
2271 if (*p < 0x80 && u8cc[0] == 0)
2273 ScreenLinesUC[idx] = 0;
2274 #ifdef FEAT_ARABIC
2275 prev_c = u8c;
2276 #endif
2278 else
2280 #ifdef FEAT_ARABIC
2281 if (p_arshape && !p_tbidi && ARABIC_CHAR(u8c))
2283 /* Do Arabic shaping. */
2284 int pc, pc1, nc;
2285 int pcc[MAX_MCO];
2286 int firstbyte = *p;
2288 /* The idea of what is the previous and next
2289 * character depends on 'rightleft'. */
2290 if (wp->w_p_rl)
2292 pc = prev_c;
2293 pc1 = prev_c1;
2294 nc = utf_ptr2char(p + c_len);
2295 prev_c1 = u8cc[0];
2297 else
2299 pc = utfc_ptr2char(p + c_len, pcc);
2300 nc = prev_c;
2301 pc1 = pcc[0];
2303 prev_c = u8c;
2305 u8c = arabic_shape(u8c, &firstbyte, &u8cc[0],
2306 pc, pc1, nc);
2307 ScreenLines[idx] = firstbyte;
2309 else
2310 prev_c = u8c;
2311 #endif
2312 /* Non-BMP character: display as ? or fullwidth ?. */
2313 #ifdef UNICODE16
2314 if (u8c >= 0x10000)
2315 ScreenLinesUC[idx] = (cells == 2) ? 0xff1f : (int)'?';
2316 else
2317 #endif
2318 ScreenLinesUC[idx] = u8c;
2319 for (i = 0; i < Screen_mco; ++i)
2321 ScreenLinesC[i][idx] = u8cc[i];
2322 if (u8cc[i] == 0)
2323 break;
2326 if (cells > 1)
2327 ScreenLines[idx + 1] = 0;
2329 else if (cells > 1) /* double-byte character */
2331 if (enc_dbcs == DBCS_JPNU && *p == 0x8e)
2332 ScreenLines2[idx] = p[1];
2333 else
2334 ScreenLines[idx + 1] = p[1];
2336 col += cells;
2337 idx += cells;
2338 p += c_len;
2341 else
2342 #endif
2344 len = (int)STRLEN(text);
2345 if (len > W_WIDTH(wp) - col)
2346 len = W_WIDTH(wp) - col;
2347 if (len > 0)
2349 #ifdef FEAT_RIGHTLEFT
2350 if (wp->w_p_rl)
2351 STRNCPY(current_ScreenLine, text, len);
2352 else
2353 #endif
2354 STRNCPY(current_ScreenLine + col, text, len);
2355 col += len;
2359 /* Fill the rest of the line with the fold filler */
2360 #ifdef FEAT_RIGHTLEFT
2361 if (wp->w_p_rl)
2362 col -= txtcol;
2363 #endif
2364 while (col < W_WIDTH(wp)
2365 #ifdef FEAT_RIGHTLEFT
2366 - (wp->w_p_rl ? txtcol : 0)
2367 #endif
2370 #ifdef FEAT_MBYTE
2371 if (enc_utf8)
2373 if (fill_fold >= 0x80)
2375 ScreenLinesUC[off + col] = fill_fold;
2376 ScreenLinesC[0][off + col] = 0;
2378 else
2379 ScreenLinesUC[off + col] = 0;
2381 #endif
2382 ScreenLines[off + col++] = fill_fold;
2385 if (text != buf)
2386 vim_free(text);
2389 * 6. set highlighting for the Visual area an other text.
2390 * If all folded lines are in the Visual area, highlight the line.
2392 #ifdef FEAT_VISUAL
2393 if (VIsual_active && wp->w_buffer == curwin->w_buffer)
2395 if (ltoreq(curwin->w_cursor, VIsual))
2397 /* Visual is after curwin->w_cursor */
2398 top = &curwin->w_cursor;
2399 bot = &VIsual;
2401 else
2403 /* Visual is before curwin->w_cursor */
2404 top = &VIsual;
2405 bot = &curwin->w_cursor;
2407 if (lnum >= top->lnum
2408 && lnume <= bot->lnum
2409 && (VIsual_mode != 'v'
2410 || ((lnum > top->lnum
2411 || (lnum == top->lnum
2412 && top->col == 0))
2413 && (lnume < bot->lnum
2414 || (lnume == bot->lnum
2415 && (bot->col - (*p_sel == 'e'))
2416 >= STRLEN(ml_get_buf(wp->w_buffer, lnume, FALSE)))))))
2418 if (VIsual_mode == Ctrl_V)
2420 /* Visual block mode: highlight the chars part of the block */
2421 if (wp->w_old_cursor_fcol + txtcol < (colnr_T)W_WIDTH(wp))
2423 if (wp->w_old_cursor_lcol + txtcol < (colnr_T)W_WIDTH(wp))
2424 len = wp->w_old_cursor_lcol;
2425 else
2426 len = W_WIDTH(wp) - txtcol;
2427 RL_MEMSET(wp->w_old_cursor_fcol + txtcol, hl_attr(HLF_V),
2428 len - (int)wp->w_old_cursor_fcol);
2431 else
2433 /* Set all attributes of the text */
2434 RL_MEMSET(txtcol, hl_attr(HLF_V), W_WIDTH(wp) - txtcol);
2438 #endif
2440 #ifdef FEAT_SYN_HL
2441 /* Show 'cursorcolumn' in the fold line. */
2442 if (wp->w_p_cuc && (int)wp->w_virtcol + txtcol < W_WIDTH(wp))
2443 ScreenAttrs[off + wp->w_virtcol + txtcol] = hl_combine_attr(
2444 ScreenAttrs[off + wp->w_virtcol + txtcol], hl_attr(HLF_CUC));
2445 #endif
2447 SCREEN_LINE(row + W_WINROW(wp), W_WINCOL(wp), (int)W_WIDTH(wp),
2448 (int)W_WIDTH(wp), FALSE);
2451 * Update w_cline_height and w_cline_folded if the cursor line was
2452 * updated (saves a call to plines() later).
2454 if (wp == curwin
2455 && lnum <= curwin->w_cursor.lnum
2456 && lnume >= curwin->w_cursor.lnum)
2458 curwin->w_cline_row = row;
2459 curwin->w_cline_height = 1;
2460 curwin->w_cline_folded = TRUE;
2461 curwin->w_valid |= (VALID_CHEIGHT|VALID_CROW);
2466 * Copy "buf[len]" to ScreenLines["off"] and set attributes to "attr".
2468 static void
2469 copy_text_attr(off, buf, len, attr)
2470 int off;
2471 char_u *buf;
2472 int len;
2473 int attr;
2475 int i;
2477 mch_memmove(ScreenLines + off, buf, (size_t)len);
2478 # ifdef FEAT_MBYTE
2479 if (enc_utf8)
2480 vim_memset(ScreenLinesUC + off, 0, sizeof(u8char_T) * (size_t)len);
2481 # endif
2482 for (i = 0; i < len; ++i)
2483 ScreenAttrs[off + i] = attr;
2487 * Fill the foldcolumn at "p" for window "wp".
2488 * Only to be called when 'foldcolumn' > 0.
2490 static void
2491 fill_foldcolumn(p, wp, closed, lnum)
2492 char_u *p;
2493 win_T *wp;
2494 int closed; /* TRUE of FALSE */
2495 linenr_T lnum; /* current line number */
2497 int i = 0;
2498 int level;
2499 int first_level;
2500 int empty;
2502 /* Init to all spaces. */
2503 copy_spaces(p, (size_t)wp->w_p_fdc);
2505 level = win_foldinfo.fi_level;
2506 if (level > 0)
2508 /* If there is only one column put more info in it. */
2509 empty = (wp->w_p_fdc == 1) ? 0 : 1;
2511 /* If the column is too narrow, we start at the lowest level that
2512 * fits and use numbers to indicated the depth. */
2513 first_level = level - wp->w_p_fdc - closed + 1 + empty;
2514 if (first_level < 1)
2515 first_level = 1;
2517 for (i = 0; i + empty < wp->w_p_fdc; ++i)
2519 if (win_foldinfo.fi_lnum == lnum
2520 && first_level + i >= win_foldinfo.fi_low_level)
2521 p[i] = '-';
2522 else if (first_level == 1)
2523 p[i] = '|';
2524 else if (first_level + i <= 9)
2525 p[i] = '0' + first_level + i;
2526 else
2527 p[i] = '>';
2528 if (first_level + i == level)
2529 break;
2532 if (closed)
2533 p[i >= wp->w_p_fdc ? i - 1 : i] = '+';
2535 #endif /* FEAT_FOLDING */
2538 * Display line "lnum" of window 'wp' on the screen.
2539 * Start at row "startrow", stop when "endrow" is reached.
2540 * wp->w_virtcol needs to be valid.
2542 * Return the number of last row the line occupies.
2544 /* ARGSUSED */
2545 static int
2546 win_line(wp, lnum, startrow, endrow, nochange)
2547 win_T *wp;
2548 linenr_T lnum;
2549 int startrow;
2550 int endrow;
2551 int nochange; /* not updating for changed text */
2553 int col; /* visual column on screen */
2554 unsigned off; /* offset in ScreenLines/ScreenAttrs */
2555 int c = 0; /* init for GCC */
2556 long vcol = 0; /* virtual column (for tabs) */
2557 long vcol_prev = -1; /* "vcol" of previous character */
2558 char_u *line; /* current line */
2559 char_u *ptr; /* current position in "line" */
2560 int row; /* row in the window, excl w_winrow */
2561 int screen_row; /* row on the screen, incl w_winrow */
2563 char_u extra[18]; /* "%ld" and 'fdc' must fit in here */
2564 int n_extra = 0; /* number of extra chars */
2565 char_u *p_extra = NULL; /* string of extra chars, plus NUL */
2566 int c_extra = NUL; /* extra chars, all the same */
2567 int extra_attr = 0; /* attributes when n_extra != 0 */
2568 static char_u *at_end_str = (char_u *)""; /* used for p_extra when
2569 displaying lcs_eol at end-of-line */
2570 int lcs_eol_one = lcs_eol; /* lcs_eol until it's been used */
2571 int lcs_prec_todo = lcs_prec; /* lcs_prec until it's been used */
2573 /* saved "extra" items for when draw_state becomes WL_LINE (again) */
2574 int saved_n_extra = 0;
2575 char_u *saved_p_extra = NULL;
2576 int saved_c_extra = 0;
2577 int saved_char_attr = 0;
2579 int n_attr = 0; /* chars with special attr */
2580 int saved_attr2 = 0; /* char_attr saved for n_attr */
2581 int n_attr3 = 0; /* chars with overruling special attr */
2582 int saved_attr3 = 0; /* char_attr saved for n_attr3 */
2584 int n_skip = 0; /* nr of chars to skip for 'nowrap' */
2586 int fromcol, tocol; /* start/end of inverting */
2587 int fromcol_prev = -2; /* start of inverting after cursor */
2588 int noinvcur = FALSE; /* don't invert the cursor */
2589 #ifdef FEAT_VISUAL
2590 pos_T *top, *bot;
2591 #endif
2592 pos_T pos;
2593 long v;
2595 int char_attr = 0; /* attributes for next character */
2596 int attr_pri = FALSE; /* char_attr has priority */
2597 int area_highlighting = FALSE; /* Visual or incsearch highlighting
2598 in this line */
2599 int attr = 0; /* attributes for area highlighting */
2600 int area_attr = 0; /* attributes desired by highlighting */
2601 int search_attr = 0; /* attributes desired by 'hlsearch' */
2602 #ifdef FEAT_SYN_HL
2603 int vcol_save_attr = 0; /* saved attr for 'cursorcolumn' */
2604 int syntax_attr = 0; /* attributes desired by syntax */
2605 int has_syntax = FALSE; /* this buffer has syntax highl. */
2606 int save_did_emsg;
2607 int eol_hl_off = 0; /* 1 if highlighted char after EOL */
2608 #endif
2609 #ifdef FEAT_SPELL
2610 int has_spell = FALSE; /* this buffer has spell checking */
2611 # define SPWORDLEN 150
2612 char_u nextline[SPWORDLEN * 2];/* text with start of the next line */
2613 int nextlinecol = 0; /* column where nextline[] starts */
2614 int nextline_idx = 0; /* index in nextline[] where next line
2615 starts */
2616 int spell_attr = 0; /* attributes desired by spelling */
2617 int word_end = 0; /* last byte with same spell_attr */
2618 static linenr_T checked_lnum = 0; /* line number for "checked_col" */
2619 static int checked_col = 0; /* column in "checked_lnum" up to which
2620 * there are no spell errors */
2621 static int cap_col = -1; /* column to check for Cap word */
2622 static linenr_T capcol_lnum = 0; /* line number where "cap_col" used */
2623 int cur_checked_col = 0; /* checked column for current line */
2624 #endif
2625 int extra_check; /* has syntax or linebreak */
2626 #ifdef FEAT_MBYTE
2627 int multi_attr = 0; /* attributes desired by multibyte */
2628 int mb_l = 1; /* multi-byte byte length */
2629 int mb_c = 0; /* decoded multi-byte character */
2630 int mb_utf8 = FALSE; /* screen char is UTF-8 char */
2631 int u8cc[MAX_MCO]; /* composing UTF-8 chars */
2632 #endif
2633 #ifdef FEAT_DIFF
2634 int filler_lines; /* nr of filler lines to be drawn */
2635 int filler_todo; /* nr of filler lines still to do + 1 */
2636 hlf_T diff_hlf = (hlf_T)0; /* type of diff highlighting */
2637 int change_start = MAXCOL; /* first col of changed area */
2638 int change_end = -1; /* last col of changed area */
2639 #endif
2640 colnr_T trailcol = MAXCOL; /* start of trailing spaces */
2641 #ifdef FEAT_LINEBREAK
2642 int need_showbreak = FALSE;
2643 #endif
2644 #if defined(FEAT_SIGNS) || (defined(FEAT_QUICKFIX) && defined(FEAT_WINDOWS)) \
2645 || defined(FEAT_SYN_HL) || defined(FEAT_DIFF)
2646 # define LINE_ATTR
2647 int line_attr = 0; /* attribute for the whole line */
2648 #endif
2649 #ifdef FEAT_SEARCH_EXTRA
2650 matchitem_T *cur; /* points to the match list */
2651 match_T *shl; /* points to search_hl or a match */
2652 int shl_flag; /* flag to indicate whether search_hl
2653 has been processed or not */
2654 int prevcol_hl_flag; /* flag to indicate whether prevcol
2655 equals startcol of search_hl or one
2656 of the matches */
2657 #endif
2658 #ifdef FEAT_ARABIC
2659 int prev_c = 0; /* previous Arabic character */
2660 int prev_c1 = 0; /* first composing char for prev_c */
2661 #endif
2662 #if defined(LINE_ATTR)
2663 int did_line_attr = 0;
2664 #endif
2666 /* draw_state: items that are drawn in sequence: */
2667 #define WL_START 0 /* nothing done yet */
2668 #ifdef FEAT_CMDWIN
2669 # define WL_CMDLINE WL_START + 1 /* cmdline window column */
2670 #else
2671 # define WL_CMDLINE WL_START
2672 #endif
2673 #ifdef FEAT_FOLDING
2674 # define WL_FOLD WL_CMDLINE + 1 /* 'foldcolumn' */
2675 #else
2676 # define WL_FOLD WL_CMDLINE
2677 #endif
2678 #ifdef FEAT_SIGNS
2679 # define WL_SIGN WL_FOLD + 1 /* column for signs */
2680 #else
2681 # define WL_SIGN WL_FOLD /* column for signs */
2682 #endif
2683 #define WL_NR WL_SIGN + 1 /* line number */
2684 #if defined(FEAT_LINEBREAK) || defined(FEAT_DIFF)
2685 # define WL_SBR WL_NR + 1 /* 'showbreak' or 'diff' */
2686 #else
2687 # define WL_SBR WL_NR
2688 #endif
2689 #define WL_LINE WL_SBR + 1 /* text in the line */
2690 int draw_state = WL_START; /* what to draw next */
2691 #if defined(FEAT_XIM) && defined(FEAT_GUI_GTK)
2692 int feedback_col = 0;
2693 int feedback_old_attr = -1;
2694 #endif
2697 if (startrow > endrow) /* past the end already! */
2698 return startrow;
2700 row = startrow;
2701 screen_row = row + W_WINROW(wp);
2704 * To speed up the loop below, set extra_check when there is linebreak,
2705 * trailing white space and/or syntax processing to be done.
2707 #ifdef FEAT_LINEBREAK
2708 extra_check = wp->w_p_lbr;
2709 #else
2710 extra_check = 0;
2711 #endif
2712 #ifdef FEAT_SYN_HL
2713 if (syntax_present(wp->w_buffer) && !wp->w_buffer->b_syn_error)
2715 /* Prepare for syntax highlighting in this line. When there is an
2716 * error, stop syntax highlighting. */
2717 save_did_emsg = did_emsg;
2718 did_emsg = FALSE;
2719 syntax_start(wp, lnum);
2720 if (did_emsg)
2721 wp->w_buffer->b_syn_error = TRUE;
2722 else
2724 did_emsg = save_did_emsg;
2725 has_syntax = TRUE;
2726 extra_check = TRUE;
2729 #endif
2731 #ifdef FEAT_SPELL
2732 if (wp->w_p_spell
2733 && *wp->w_buffer->b_p_spl != NUL
2734 && wp->w_buffer->b_langp.ga_len > 0
2735 && *(char **)(wp->w_buffer->b_langp.ga_data) != NULL)
2737 /* Prepare for spell checking. */
2738 has_spell = TRUE;
2739 extra_check = TRUE;
2741 /* Get the start of the next line, so that words that wrap to the next
2742 * line are found too: "et<line-break>al.".
2743 * Trick: skip a few chars for C/shell/Vim comments */
2744 nextline[SPWORDLEN] = NUL;
2745 if (lnum < wp->w_buffer->b_ml.ml_line_count)
2747 line = ml_get_buf(wp->w_buffer, lnum + 1, FALSE);
2748 spell_cat_line(nextline + SPWORDLEN, line, SPWORDLEN);
2751 /* When a word wrapped from the previous line the start of the current
2752 * line is valid. */
2753 if (lnum == checked_lnum)
2754 cur_checked_col = checked_col;
2755 checked_lnum = 0;
2757 /* When there was a sentence end in the previous line may require a
2758 * word starting with capital in this line. In line 1 always check
2759 * the first word. */
2760 if (lnum != capcol_lnum)
2761 cap_col = -1;
2762 if (lnum == 1)
2763 cap_col = 0;
2764 capcol_lnum = 0;
2766 #endif
2769 * handle visual active in this window
2771 fromcol = -10;
2772 tocol = MAXCOL;
2773 #ifdef FEAT_VISUAL
2774 if (VIsual_active && wp->w_buffer == curwin->w_buffer)
2776 /* Visual is after curwin->w_cursor */
2777 if (ltoreq(curwin->w_cursor, VIsual))
2779 top = &curwin->w_cursor;
2780 bot = &VIsual;
2782 else /* Visual is before curwin->w_cursor */
2784 top = &VIsual;
2785 bot = &curwin->w_cursor;
2787 if (VIsual_mode == Ctrl_V) /* block mode */
2789 if (lnum >= top->lnum && lnum <= bot->lnum)
2791 fromcol = wp->w_old_cursor_fcol;
2792 tocol = wp->w_old_cursor_lcol;
2795 else /* non-block mode */
2797 if (lnum > top->lnum && lnum <= bot->lnum)
2798 fromcol = 0;
2799 else if (lnum == top->lnum)
2801 if (VIsual_mode == 'V') /* linewise */
2802 fromcol = 0;
2803 else
2805 getvvcol(wp, top, (colnr_T *)&fromcol, NULL, NULL);
2806 if (gchar_pos(top) == NUL)
2807 tocol = fromcol + 1;
2810 if (VIsual_mode != 'V' && lnum == bot->lnum)
2812 if (*p_sel == 'e' && bot->col == 0
2813 #ifdef FEAT_VIRTUALEDIT
2814 && bot->coladd == 0
2815 #endif
2818 fromcol = -10;
2819 tocol = MAXCOL;
2821 else if (bot->col == MAXCOL)
2822 tocol = MAXCOL;
2823 else
2825 pos = *bot;
2826 if (*p_sel == 'e')
2827 getvvcol(wp, &pos, (colnr_T *)&tocol, NULL, NULL);
2828 else
2830 getvvcol(wp, &pos, NULL, NULL, (colnr_T *)&tocol);
2831 ++tocol;
2837 #ifndef MSDOS
2838 /* Check if the character under the cursor should not be inverted */
2839 if (!highlight_match && lnum == curwin->w_cursor.lnum && wp == curwin
2840 # ifdef FEAT_GUI
2841 && !gui.in_use
2842 # endif
2844 noinvcur = TRUE;
2845 #endif
2847 /* if inverting in this line set area_highlighting */
2848 if (fromcol >= 0)
2850 area_highlighting = TRUE;
2851 attr = hl_attr(HLF_V);
2852 #if defined(FEAT_CLIPBOARD) && defined(FEAT_X11)
2853 if (clip_star.available && !clip_star.owned && clip_isautosel())
2854 attr = hl_attr(HLF_VNC);
2855 #endif
2860 * handle 'incsearch' and ":s///c" highlighting
2862 else
2863 #endif /* FEAT_VISUAL */
2864 if (highlight_match
2865 && wp == curwin
2866 && lnum >= curwin->w_cursor.lnum
2867 && lnum <= curwin->w_cursor.lnum + search_match_lines)
2869 if (lnum == curwin->w_cursor.lnum)
2870 getvcol(curwin, &(curwin->w_cursor),
2871 (colnr_T *)&fromcol, NULL, NULL);
2872 else
2873 fromcol = 0;
2874 if (lnum == curwin->w_cursor.lnum + search_match_lines)
2876 pos.lnum = lnum;
2877 pos.col = search_match_endcol;
2878 getvcol(curwin, &pos, (colnr_T *)&tocol, NULL, NULL);
2880 else
2881 tocol = MAXCOL;
2882 if (fromcol == tocol) /* do at least one character */
2883 tocol = fromcol + 1; /* happens when past end of line */
2884 area_highlighting = TRUE;
2885 attr = hl_attr(HLF_I);
2888 #ifdef FEAT_DIFF
2889 filler_lines = diff_check(wp, lnum);
2890 if (filler_lines < 0)
2892 if (filler_lines == -1)
2894 if (diff_find_change(wp, lnum, &change_start, &change_end))
2895 diff_hlf = HLF_ADD; /* added line */
2896 else if (change_start == 0)
2897 diff_hlf = HLF_TXD; /* changed text */
2898 else
2899 diff_hlf = HLF_CHD; /* changed line */
2901 else
2902 diff_hlf = HLF_ADD; /* added line */
2903 filler_lines = 0;
2904 area_highlighting = TRUE;
2906 if (lnum == wp->w_topline)
2907 filler_lines = wp->w_topfill;
2908 filler_todo = filler_lines;
2909 #endif
2911 #ifdef LINE_ATTR
2912 # ifdef FEAT_SIGNS
2913 /* If this line has a sign with line highlighting set line_attr. */
2914 v = buf_getsigntype(wp->w_buffer, lnum, SIGN_LINEHL);
2915 if (v != 0)
2916 line_attr = sign_get_attr((int)v, TRUE);
2917 # endif
2918 # if defined(FEAT_QUICKFIX) && defined(FEAT_WINDOWS)
2919 /* Highlight the current line in the quickfix window. */
2920 if (bt_quickfix(wp->w_buffer) && qf_current_entry(wp) == lnum)
2921 line_attr = hl_attr(HLF_L);
2922 # endif
2923 if (line_attr != 0)
2924 area_highlighting = TRUE;
2925 #endif
2927 line = ml_get_buf(wp->w_buffer, lnum, FALSE);
2928 ptr = line;
2930 #ifdef FEAT_SPELL
2931 if (has_spell)
2933 /* For checking first word with a capital skip white space. */
2934 if (cap_col == 0)
2935 cap_col = (int)(skipwhite(line) - line);
2937 /* To be able to spell-check over line boundaries copy the end of the
2938 * current line into nextline[]. Above the start of the next line was
2939 * copied to nextline[SPWORDLEN]. */
2940 if (nextline[SPWORDLEN] == NUL)
2942 /* No next line or it is empty. */
2943 nextlinecol = MAXCOL;
2944 nextline_idx = 0;
2946 else
2948 v = (long)STRLEN(line);
2949 if (v < SPWORDLEN)
2951 /* Short line, use it completely and append the start of the
2952 * next line. */
2953 nextlinecol = 0;
2954 mch_memmove(nextline, line, (size_t)v);
2955 STRMOVE(nextline + v, nextline + SPWORDLEN);
2956 nextline_idx = v + 1;
2958 else
2960 /* Long line, use only the last SPWORDLEN bytes. */
2961 nextlinecol = v - SPWORDLEN;
2962 mch_memmove(nextline, line + nextlinecol, SPWORDLEN);
2963 nextline_idx = SPWORDLEN + 1;
2967 #endif
2969 /* find start of trailing whitespace */
2970 if (wp->w_p_list && lcs_trail)
2972 trailcol = (colnr_T)STRLEN(ptr);
2973 while (trailcol > (colnr_T)0 && vim_iswhite(ptr[trailcol - 1]))
2974 --trailcol;
2975 trailcol += (colnr_T) (ptr - line);
2976 extra_check = TRUE;
2980 * 'nowrap' or 'wrap' and a single line that doesn't fit: Advance to the
2981 * first character to be displayed.
2983 if (wp->w_p_wrap)
2984 v = wp->w_skipcol;
2985 else
2986 v = wp->w_leftcol;
2987 if (v > 0)
2989 #ifdef FEAT_MBYTE
2990 char_u *prev_ptr = ptr;
2991 #endif
2992 while (vcol < v && *ptr != NUL)
2994 c = win_lbr_chartabsize(wp, ptr, (colnr_T)vcol, NULL);
2995 vcol += c;
2996 #ifdef FEAT_MBYTE
2997 prev_ptr = ptr;
2998 #endif
2999 mb_ptr_adv(ptr);
3002 #ifdef FEAT_VIRTUALEDIT
3003 /* When 'virtualedit' is set the end of the line may be before the
3004 * start of the displayed part. */
3005 if (vcol < v && *ptr == NUL && virtual_active())
3006 vcol = v;
3007 #endif
3009 /* Handle a character that's not completely on the screen: Put ptr at
3010 * that character but skip the first few screen characters. */
3011 if (vcol > v)
3013 vcol -= c;
3014 #ifdef FEAT_MBYTE
3015 ptr = prev_ptr;
3016 #else
3017 --ptr;
3018 #endif
3019 n_skip = v - vcol;
3023 * Adjust for when the inverted text is before the screen,
3024 * and when the start of the inverted text is before the screen.
3026 if (tocol <= vcol)
3027 fromcol = 0;
3028 else if (fromcol >= 0 && fromcol < vcol)
3029 fromcol = vcol;
3031 #ifdef FEAT_LINEBREAK
3032 /* When w_skipcol is non-zero, first line needs 'showbreak' */
3033 if (wp->w_p_wrap)
3034 need_showbreak = TRUE;
3035 #endif
3036 #ifdef FEAT_SPELL
3037 /* When spell checking a word we need to figure out the start of the
3038 * word and if it's badly spelled or not. */
3039 if (has_spell)
3041 int len;
3042 colnr_T linecol = (colnr_T)(ptr - line);
3043 hlf_T spell_hlf = HLF_COUNT;
3045 pos = wp->w_cursor;
3046 wp->w_cursor.lnum = lnum;
3047 wp->w_cursor.col = linecol;
3048 len = spell_move_to(wp, FORWARD, TRUE, TRUE, &spell_hlf);
3050 /* spell_move_to() may call ml_get() and make "line" invalid */
3051 line = ml_get_buf(wp->w_buffer, lnum, FALSE);
3052 ptr = line + linecol;
3054 if (len == 0 || (int)wp->w_cursor.col > ptr - line)
3056 /* no bad word found at line start, don't check until end of a
3057 * word */
3058 spell_hlf = HLF_COUNT;
3059 word_end = (int)(spell_to_word_end(ptr, wp->w_buffer)
3060 - line + 1);
3062 else
3064 /* bad word found, use attributes until end of word */
3065 word_end = wp->w_cursor.col + len + 1;
3067 /* Turn index into actual attributes. */
3068 if (spell_hlf != HLF_COUNT)
3069 spell_attr = highlight_attr[spell_hlf];
3071 wp->w_cursor = pos;
3073 # ifdef FEAT_SYN_HL
3074 /* Need to restart syntax highlighting for this line. */
3075 if (has_syntax)
3076 syntax_start(wp, lnum);
3077 # endif
3079 #endif
3083 * Correct highlighting for cursor that can't be disabled.
3084 * Avoids having to check this for each character.
3086 if (fromcol >= 0)
3088 if (noinvcur)
3090 if ((colnr_T)fromcol == wp->w_virtcol)
3092 /* highlighting starts at cursor, let it start just after the
3093 * cursor */
3094 fromcol_prev = fromcol;
3095 fromcol = -1;
3097 else if ((colnr_T)fromcol < wp->w_virtcol)
3098 /* restart highlighting after the cursor */
3099 fromcol_prev = wp->w_virtcol;
3101 if (fromcol >= tocol)
3102 fromcol = -1;
3105 #ifdef FEAT_SEARCH_EXTRA
3107 * Handle highlighting the last used search pattern and matches.
3108 * Do this for both search_hl and the match list.
3110 cur = wp->w_match_head;
3111 shl_flag = FALSE;
3112 while (cur != NULL || shl_flag == FALSE)
3114 if (shl_flag == FALSE)
3116 shl = &search_hl;
3117 shl_flag = TRUE;
3119 else
3120 shl = &cur->hl;
3121 shl->startcol = MAXCOL;
3122 shl->endcol = MAXCOL;
3123 shl->attr_cur = 0;
3124 if (shl->rm.regprog != NULL)
3126 v = (long)(ptr - line);
3127 next_search_hl(wp, shl, lnum, (colnr_T)v);
3129 /* Need to get the line again, a multi-line regexp may have made it
3130 * invalid. */
3131 line = ml_get_buf(wp->w_buffer, lnum, FALSE);
3132 ptr = line + v;
3134 if (shl->lnum != 0 && shl->lnum <= lnum)
3136 if (shl->lnum == lnum)
3137 shl->startcol = shl->rm.startpos[0].col;
3138 else
3139 shl->startcol = 0;
3140 if (lnum == shl->lnum + shl->rm.endpos[0].lnum
3141 - shl->rm.startpos[0].lnum)
3142 shl->endcol = shl->rm.endpos[0].col;
3143 else
3144 shl->endcol = MAXCOL;
3145 /* Highlight one character for an empty match. */
3146 if (shl->startcol == shl->endcol)
3148 #ifdef FEAT_MBYTE
3149 if (has_mbyte && line[shl->endcol] != NUL)
3150 shl->endcol += (*mb_ptr2len)(line + shl->endcol);
3151 else
3152 #endif
3153 ++shl->endcol;
3155 if ((long)shl->startcol < v) /* match at leftcol */
3157 shl->attr_cur = shl->attr;
3158 search_attr = shl->attr;
3160 area_highlighting = TRUE;
3163 if (shl != &search_hl && cur != NULL)
3164 cur = cur->next;
3166 #endif
3168 #ifdef FEAT_SYN_HL
3169 /* Cursor line highlighting for 'cursorline'. Not when Visual mode is
3170 * active, because it's not clear what is selected then. */
3171 if (wp->w_p_cul && lnum == wp->w_cursor.lnum && !VIsual_active)
3173 line_attr = hl_attr(HLF_CUL);
3174 area_highlighting = TRUE;
3176 #endif
3178 off = (unsigned)(current_ScreenLine - ScreenLines);
3179 col = 0;
3180 #ifdef FEAT_RIGHTLEFT
3181 if (wp->w_p_rl)
3183 /* Rightleft window: process the text in the normal direction, but put
3184 * it in current_ScreenLine[] from right to left. Start at the
3185 * rightmost column of the window. */
3186 col = W_WIDTH(wp) - 1;
3187 off += col;
3189 #endif
3192 * Repeat for the whole displayed line.
3194 for (;;)
3196 /* Skip this quickly when working on the text. */
3197 if (draw_state != WL_LINE)
3199 #ifdef FEAT_CMDWIN
3200 if (draw_state == WL_CMDLINE - 1 && n_extra == 0)
3202 draw_state = WL_CMDLINE;
3203 if (cmdwin_type != 0 && wp == curwin)
3205 /* Draw the cmdline character. */
3206 n_extra = 1;
3207 c_extra = cmdwin_type;
3208 char_attr = hl_attr(HLF_AT);
3211 #endif
3213 #ifdef FEAT_FOLDING
3214 if (draw_state == WL_FOLD - 1 && n_extra == 0)
3216 draw_state = WL_FOLD;
3217 if (wp->w_p_fdc > 0)
3219 /* Draw the 'foldcolumn'. */
3220 fill_foldcolumn(extra, wp, FALSE, lnum);
3221 n_extra = wp->w_p_fdc;
3222 p_extra = extra;
3223 p_extra[n_extra] = NUL;
3224 c_extra = NUL;
3225 char_attr = hl_attr(HLF_FC);
3228 #endif
3230 #ifdef FEAT_SIGNS
3231 if (draw_state == WL_SIGN - 1 && n_extra == 0)
3233 draw_state = WL_SIGN;
3234 /* Show the sign column when there are any signs in this
3235 * buffer or when using Netbeans. */
3236 if (draw_signcolumn(wp)
3237 # ifdef FEAT_DIFF
3238 && filler_todo <= 0
3239 # endif
3242 int_u text_sign;
3243 # ifdef FEAT_SIGN_ICONS
3244 int_u icon_sign;
3245 # endif
3247 /* Draw two cells with the sign value or blank. */
3248 c_extra = ' ';
3249 char_attr = hl_attr(HLF_SC);
3250 n_extra = 2;
3252 if (row == startrow)
3254 text_sign = buf_getsigntype(wp->w_buffer, lnum,
3255 SIGN_TEXT);
3256 # ifdef FEAT_SIGN_ICONS
3257 icon_sign = buf_getsigntype(wp->w_buffer, lnum,
3258 SIGN_ICON);
3259 if (gui.in_use && icon_sign != 0)
3261 /* Use the image in this position. */
3262 c_extra = SIGN_BYTE;
3263 # ifdef FEAT_NETBEANS_INTG
3264 if (buf_signcount(wp->w_buffer, lnum) > 1)
3265 c_extra = MULTISIGN_BYTE;
3266 # endif
3267 char_attr = icon_sign;
3269 else
3270 # endif
3271 if (text_sign != 0)
3273 p_extra = sign_get_text(text_sign);
3274 if (p_extra != NULL)
3276 c_extra = NUL;
3277 n_extra = (int)STRLEN(p_extra);
3279 char_attr = sign_get_attr(text_sign, FALSE);
3284 #endif
3286 if (draw_state == WL_NR - 1 && n_extra == 0)
3288 draw_state = WL_NR;
3289 /* Display the line number. After the first fill with blanks
3290 * when the 'n' flag isn't in 'cpo' */
3291 if (wp->w_p_nu
3292 && (row == startrow
3293 #ifdef FEAT_DIFF
3294 + filler_lines
3295 #endif
3296 || vim_strchr(p_cpo, CPO_NUMCOL) == NULL))
3298 /* Draw the line number (empty space after wrapping). */
3299 if (row == startrow
3300 #ifdef FEAT_DIFF
3301 + filler_lines
3302 #endif
3305 sprintf((char *)extra, "%*ld ",
3306 number_width(wp), (long)lnum);
3307 if (wp->w_skipcol > 0)
3308 for (p_extra = extra; *p_extra == ' '; ++p_extra)
3309 *p_extra = '-';
3310 #ifdef FEAT_RIGHTLEFT
3311 if (wp->w_p_rl) /* reverse line numbers */
3312 rl_mirror(extra);
3313 #endif
3314 p_extra = extra;
3315 c_extra = NUL;
3317 else
3318 c_extra = ' ';
3319 n_extra = number_width(wp) + 1;
3320 char_attr = hl_attr(HLF_N);
3321 #ifdef FEAT_SYN_HL
3322 /* When 'cursorline' is set highlight the line number of
3323 * the current line differently. */
3324 if (wp->w_p_cul && lnum == wp->w_cursor.lnum)
3325 char_attr = hl_combine_attr(hl_attr(HLF_CUL), char_attr);
3326 #endif
3330 #if defined(FEAT_LINEBREAK) || defined(FEAT_DIFF)
3331 if (draw_state == WL_SBR - 1 && n_extra == 0)
3333 draw_state = WL_SBR;
3334 # ifdef FEAT_DIFF
3335 if (filler_todo > 0)
3337 /* Draw "deleted" diff line(s). */
3338 if (char2cells(fill_diff) > 1)
3339 c_extra = '-';
3340 else
3341 c_extra = fill_diff;
3342 # ifdef FEAT_RIGHTLEFT
3343 if (wp->w_p_rl)
3344 n_extra = col + 1;
3345 else
3346 # endif
3347 n_extra = W_WIDTH(wp) - col;
3348 char_attr = hl_attr(HLF_DED);
3350 # endif
3351 # ifdef FEAT_LINEBREAK
3352 if (*p_sbr != NUL && need_showbreak)
3354 /* Draw 'showbreak' at the start of each broken line. */
3355 p_extra = p_sbr;
3356 c_extra = NUL;
3357 n_extra = (int)STRLEN(p_sbr);
3358 char_attr = hl_attr(HLF_AT);
3359 need_showbreak = FALSE;
3360 /* Correct end of highlighted area for 'showbreak',
3361 * required when 'linebreak' is also set. */
3362 if (tocol == vcol)
3363 tocol += n_extra;
3365 # endif
3367 #endif
3369 if (draw_state == WL_LINE - 1 && n_extra == 0)
3371 draw_state = WL_LINE;
3372 if (saved_n_extra)
3374 /* Continue item from end of wrapped line. */
3375 n_extra = saved_n_extra;
3376 c_extra = saved_c_extra;
3377 p_extra = saved_p_extra;
3378 char_attr = saved_char_attr;
3380 else
3381 char_attr = 0;
3385 /* When still displaying '$' of change command, stop at cursor */
3386 if (dollar_vcol != 0 && wp == curwin
3387 && lnum == wp->w_cursor.lnum && vcol >= (long)wp->w_virtcol
3388 #ifdef FEAT_DIFF
3389 && filler_todo <= 0
3390 #endif
3393 SCREEN_LINE(screen_row, W_WINCOL(wp), col, -(int)W_WIDTH(wp),
3394 wp->w_p_rl);
3395 /* Pretend we have finished updating the window. Except when
3396 * 'cursorcolumn' is set. */
3397 #ifdef FEAT_SYN_HL
3398 if (wp->w_p_cuc)
3399 row = wp->w_cline_row + wp->w_cline_height;
3400 else
3401 #endif
3402 row = wp->w_height;
3403 break;
3406 if (draw_state == WL_LINE && area_highlighting)
3408 /* handle Visual or match highlighting in this line */
3409 if (vcol == fromcol
3410 #ifdef FEAT_MBYTE
3411 || (has_mbyte && vcol + 1 == fromcol && n_extra == 0
3412 && (*mb_ptr2cells)(ptr) > 1)
3413 #endif
3414 || ((int)vcol_prev == fromcol_prev
3415 && vcol < tocol))
3416 area_attr = attr; /* start highlighting */
3417 else if (area_attr != 0
3418 && (vcol == tocol
3419 || (noinvcur && (colnr_T)vcol == wp->w_virtcol)))
3420 area_attr = 0; /* stop highlighting */
3422 #ifdef FEAT_SEARCH_EXTRA
3423 if (!n_extra)
3426 * Check for start/end of search pattern match.
3427 * After end, check for start/end of next match.
3428 * When another match, have to check for start again.
3429 * Watch out for matching an empty string!
3430 * Do this for 'search_hl' and the match list (ordered by
3431 * priority).
3433 v = (long)(ptr - line);
3434 cur = wp->w_match_head;
3435 shl_flag = FALSE;
3436 while (cur != NULL || shl_flag == FALSE)
3438 if (shl_flag == FALSE
3439 && ((cur != NULL
3440 && cur->priority > SEARCH_HL_PRIORITY)
3441 || cur == NULL))
3443 shl = &search_hl;
3444 shl_flag = TRUE;
3446 else
3447 shl = &cur->hl;
3448 while (shl->rm.regprog != NULL)
3450 if (shl->startcol != MAXCOL
3451 && v >= (long)shl->startcol
3452 && v < (long)shl->endcol)
3454 shl->attr_cur = shl->attr;
3456 else if (v == (long)shl->endcol)
3458 shl->attr_cur = 0;
3460 next_search_hl(wp, shl, lnum, (colnr_T)v);
3462 /* Need to get the line again, a multi-line regexp
3463 * may have made it invalid. */
3464 line = ml_get_buf(wp->w_buffer, lnum, FALSE);
3465 ptr = line + v;
3467 if (shl->lnum == lnum)
3469 shl->startcol = shl->rm.startpos[0].col;
3470 if (shl->rm.endpos[0].lnum == 0)
3471 shl->endcol = shl->rm.endpos[0].col;
3472 else
3473 shl->endcol = MAXCOL;
3475 if (shl->startcol == shl->endcol)
3477 /* highlight empty match, try again after
3478 * it */
3479 #ifdef FEAT_MBYTE
3480 if (has_mbyte)
3481 shl->endcol += (*mb_ptr2len)(line
3482 + shl->endcol);
3483 else
3484 #endif
3485 ++shl->endcol;
3488 /* Loop to check if the match starts at the
3489 * current position */
3490 continue;
3493 break;
3495 if (shl != &search_hl && cur != NULL)
3496 cur = cur->next;
3499 /* Use attributes from match with highest priority among
3500 * 'search_hl' and the match list. */
3501 search_attr = search_hl.attr_cur;
3502 cur = wp->w_match_head;
3503 shl_flag = FALSE;
3504 while (cur != NULL || shl_flag == FALSE)
3506 if (shl_flag == FALSE
3507 && ((cur != NULL
3508 && cur->priority > SEARCH_HL_PRIORITY)
3509 || cur == NULL))
3511 shl = &search_hl;
3512 shl_flag = TRUE;
3514 else
3515 shl = &cur->hl;
3516 if (shl->attr_cur != 0)
3517 search_attr = shl->attr_cur;
3518 if (shl != &search_hl && cur != NULL)
3519 cur = cur->next;
3522 #endif
3524 #ifdef FEAT_DIFF
3525 if (diff_hlf != (hlf_T)0)
3527 if (diff_hlf == HLF_CHD && ptr - line >= change_start
3528 && n_extra == 0)
3529 diff_hlf = HLF_TXD; /* changed text */
3530 if (diff_hlf == HLF_TXD && ptr - line > change_end
3531 && n_extra == 0)
3532 diff_hlf = HLF_CHD; /* changed line */
3533 line_attr = hl_attr(diff_hlf);
3535 #endif
3537 /* Decide which of the highlight attributes to use. */
3538 attr_pri = TRUE;
3539 if (area_attr != 0)
3540 char_attr = area_attr;
3541 else if (search_attr != 0)
3542 char_attr = search_attr;
3543 #ifdef LINE_ATTR
3544 /* Use line_attr when not in the Visual or 'incsearch' area
3545 * (area_attr may be 0 when "noinvcur" is set). */
3546 else if (line_attr != 0 && ((fromcol == -10 && tocol == MAXCOL)
3547 || (vcol < fromcol || vcol >= tocol)))
3548 char_attr = line_attr;
3549 #endif
3550 else
3552 attr_pri = FALSE;
3553 #ifdef FEAT_SYN_HL
3554 if (has_syntax)
3555 char_attr = syntax_attr;
3556 else
3557 #endif
3558 char_attr = 0;
3563 * Get the next character to put on the screen.
3566 * The "p_extra" points to the extra stuff that is inserted to
3567 * represent special characters (non-printable stuff) and other
3568 * things. When all characters are the same, c_extra is used.
3569 * "p_extra" must end in a NUL to avoid mb_ptr2len() reads past
3570 * "p_extra[n_extra]".
3571 * For the '$' of the 'list' option, n_extra == 1, p_extra == "".
3573 if (n_extra > 0)
3575 if (c_extra != NUL)
3577 c = c_extra;
3578 #ifdef FEAT_MBYTE
3579 mb_c = c; /* doesn't handle non-utf-8 multi-byte! */
3580 if (enc_utf8 && (*mb_char2len)(c) > 1)
3582 mb_utf8 = TRUE;
3583 u8cc[0] = 0;
3584 c = 0xc0;
3586 else
3587 mb_utf8 = FALSE;
3588 #endif
3590 else
3592 c = *p_extra;
3593 #ifdef FEAT_MBYTE
3594 if (has_mbyte)
3596 mb_c = c;
3597 if (enc_utf8)
3599 /* If the UTF-8 character is more than one byte:
3600 * Decode it into "mb_c". */
3601 mb_l = (*mb_ptr2len)(p_extra);
3602 mb_utf8 = FALSE;
3603 if (mb_l > n_extra)
3604 mb_l = 1;
3605 else if (mb_l > 1)
3607 mb_c = utfc_ptr2char(p_extra, u8cc);
3608 mb_utf8 = TRUE;
3609 c = 0xc0;
3612 else
3614 /* if this is a DBCS character, put it in "mb_c" */
3615 mb_l = MB_BYTE2LEN(c);
3616 if (mb_l >= n_extra)
3617 mb_l = 1;
3618 else if (mb_l > 1)
3619 mb_c = (c << 8) + p_extra[1];
3621 if (mb_l == 0) /* at the NUL at end-of-line */
3622 mb_l = 1;
3624 /* If a double-width char doesn't fit display a '>' in the
3625 * last column. */
3626 if ((
3627 # ifdef FEAT_RIGHTLEFT
3628 wp->w_p_rl ? (col <= 0) :
3629 # endif
3630 (col >= W_WIDTH(wp) - 1))
3631 && (*mb_char2cells)(mb_c) == 2)
3633 c = '>';
3634 mb_c = c;
3635 mb_l = 1;
3636 mb_utf8 = FALSE;
3637 multi_attr = hl_attr(HLF_AT);
3638 /* put the pointer back to output the double-width
3639 * character at the start of the next line. */
3640 ++n_extra;
3641 --p_extra;
3643 else
3645 n_extra -= mb_l - 1;
3646 p_extra += mb_l - 1;
3649 #endif
3650 ++p_extra;
3652 --n_extra;
3654 else
3657 * Get a character from the line itself.
3659 c = *ptr;
3660 #ifdef FEAT_MBYTE
3661 if (has_mbyte)
3663 mb_c = c;
3664 if (enc_utf8)
3666 /* If the UTF-8 character is more than one byte: Decode it
3667 * into "mb_c". */
3668 mb_l = (*mb_ptr2len)(ptr);
3669 mb_utf8 = FALSE;
3670 if (mb_l > 1)
3672 mb_c = utfc_ptr2char(ptr, u8cc);
3673 /* Overlong encoded ASCII or ASCII with composing char
3674 * is displayed normally, except a NUL. */
3675 if (mb_c < 0x80)
3676 c = mb_c;
3677 mb_utf8 = TRUE;
3679 /* At start of the line we can have a composing char.
3680 * Draw it as a space with a composing char. */
3681 if (utf_iscomposing(mb_c))
3683 int i;
3685 for (i = Screen_mco - 1; i > 0; --i)
3686 u8cc[i] = u8cc[i - 1];
3687 u8cc[0] = mb_c;
3688 mb_c = ' ';
3692 if ((mb_l == 1 && c >= 0x80)
3693 || (mb_l >= 1 && mb_c == 0)
3694 || (mb_l > 1 && (!vim_isprintc(mb_c)
3695 # ifdef UNICODE16
3696 || mb_c >= 0x10000
3697 # endif
3701 * Illegal UTF-8 byte: display as <xx>.
3702 * Non-BMP character : display as ? or fullwidth ?.
3704 # ifdef UNICODE16
3705 if (mb_c < 0x10000)
3706 # endif
3708 transchar_hex(extra, mb_c);
3709 # ifdef FEAT_RIGHTLEFT
3710 if (wp->w_p_rl) /* reverse */
3711 rl_mirror(extra);
3712 # endif
3714 # ifdef UNICODE16
3715 else if (utf_char2cells(mb_c) != 2)
3716 STRCPY(extra, "?");
3717 else
3718 /* 0xff1f in UTF-8: full-width '?' */
3719 STRCPY(extra, "\357\274\237");
3720 # endif
3722 p_extra = extra;
3723 c = *p_extra;
3724 mb_c = mb_ptr2char_adv(&p_extra);
3725 mb_utf8 = (c >= 0x80);
3726 n_extra = (int)STRLEN(p_extra);
3727 c_extra = NUL;
3728 if (area_attr == 0 && search_attr == 0)
3730 n_attr = n_extra + 1;
3731 extra_attr = hl_attr(HLF_8);
3732 saved_attr2 = char_attr; /* save current attr */
3735 else if (mb_l == 0) /* at the NUL at end-of-line */
3736 mb_l = 1;
3737 #ifdef FEAT_ARABIC
3738 else if (p_arshape && !p_tbidi && ARABIC_CHAR(mb_c))
3740 /* Do Arabic shaping. */
3741 int pc, pc1, nc;
3742 int pcc[MAX_MCO];
3744 /* The idea of what is the previous and next
3745 * character depends on 'rightleft'. */
3746 if (wp->w_p_rl)
3748 pc = prev_c;
3749 pc1 = prev_c1;
3750 nc = utf_ptr2char(ptr + mb_l);
3751 prev_c1 = u8cc[0];
3753 else
3755 pc = utfc_ptr2char(ptr + mb_l, pcc);
3756 nc = prev_c;
3757 pc1 = pcc[0];
3759 prev_c = mb_c;
3761 mb_c = arabic_shape(mb_c, &c, &u8cc[0], pc, pc1, nc);
3763 else
3764 prev_c = mb_c;
3765 #endif
3767 else /* enc_dbcs */
3769 mb_l = MB_BYTE2LEN(c);
3770 if (mb_l == 0) /* at the NUL at end-of-line */
3771 mb_l = 1;
3772 else if (mb_l > 1)
3774 /* We assume a second byte below 32 is illegal.
3775 * Hopefully this is OK for all double-byte encodings!
3777 if (ptr[1] >= 32)
3778 mb_c = (c << 8) + ptr[1];
3779 else
3781 if (ptr[1] == NUL)
3783 /* head byte at end of line */
3784 mb_l = 1;
3785 transchar_nonprint(extra, c);
3787 else
3789 /* illegal tail byte */
3790 mb_l = 2;
3791 STRCPY(extra, "XX");
3793 p_extra = extra;
3794 n_extra = (int)STRLEN(extra) - 1;
3795 c_extra = NUL;
3796 c = *p_extra++;
3797 if (area_attr == 0 && search_attr == 0)
3799 n_attr = n_extra + 1;
3800 extra_attr = hl_attr(HLF_8);
3801 saved_attr2 = char_attr; /* save current attr */
3803 mb_c = c;
3807 /* If a double-width char doesn't fit display a '>' in the
3808 * last column; the character is displayed at the start of the
3809 * next line. */
3810 if ((
3811 # ifdef FEAT_RIGHTLEFT
3812 wp->w_p_rl ? (col <= 0) :
3813 # endif
3814 (col >= W_WIDTH(wp) - 1))
3815 && (*mb_char2cells)(mb_c) == 2)
3817 c = '>';
3818 mb_c = c;
3819 mb_utf8 = FALSE;
3820 mb_l = 1;
3821 multi_attr = hl_attr(HLF_AT);
3822 /* Put pointer back so that the character will be
3823 * displayed at the start of the next line. */
3824 --ptr;
3826 else if (*ptr != NUL)
3827 ptr += mb_l - 1;
3829 /* If a double-width char doesn't fit at the left side display
3830 * a '<' in the first column. */
3831 if (n_skip > 0 && mb_l > 1)
3833 n_extra = 1;
3834 c_extra = '<';
3835 c = ' ';
3836 if (area_attr == 0 && search_attr == 0)
3838 n_attr = n_extra + 1;
3839 extra_attr = hl_attr(HLF_AT);
3840 saved_attr2 = char_attr; /* save current attr */
3842 mb_c = c;
3843 mb_utf8 = FALSE;
3844 mb_l = 1;
3848 #endif
3849 ++ptr;
3851 /* 'list' : change char 160 to lcs_nbsp. */
3852 if (wp->w_p_list && (c == 160
3853 #ifdef FEAT_MBYTE
3854 || (mb_utf8 && mb_c == 160)
3855 #endif
3856 ) && lcs_nbsp)
3858 c = lcs_nbsp;
3859 if (area_attr == 0 && search_attr == 0)
3861 n_attr = 1;
3862 extra_attr = hl_attr(HLF_8);
3863 saved_attr2 = char_attr; /* save current attr */
3865 #ifdef FEAT_MBYTE
3866 mb_c = c;
3867 if (enc_utf8 && (*mb_char2len)(c) > 1)
3869 mb_utf8 = TRUE;
3870 u8cc[0] = 0;
3871 c = 0xc0;
3873 else
3874 mb_utf8 = FALSE;
3875 #endif
3878 if (extra_check)
3880 #ifdef FEAT_SPELL
3881 int can_spell = TRUE;
3882 #endif
3884 #ifdef FEAT_SYN_HL
3885 /* Get syntax attribute, unless still at the start of the line
3886 * (double-wide char that doesn't fit). */
3887 v = (long)(ptr - line);
3888 if (has_syntax && v > 0)
3890 /* Get the syntax attribute for the character. If there
3891 * is an error, disable syntax highlighting. */
3892 save_did_emsg = did_emsg;
3893 did_emsg = FALSE;
3895 syntax_attr = get_syntax_attr((colnr_T)v - 1,
3896 # ifdef FEAT_SPELL
3897 has_spell ? &can_spell :
3898 # endif
3899 NULL, FALSE);
3901 if (did_emsg)
3903 wp->w_buffer->b_syn_error = TRUE;
3904 has_syntax = FALSE;
3906 else
3907 did_emsg = save_did_emsg;
3909 /* Need to get the line again, a multi-line regexp may
3910 * have made it invalid. */
3911 line = ml_get_buf(wp->w_buffer, lnum, FALSE);
3912 ptr = line + v;
3914 if (!attr_pri)
3915 char_attr = syntax_attr;
3916 else
3917 char_attr = hl_combine_attr(syntax_attr, char_attr);
3919 #endif
3921 #ifdef FEAT_SPELL
3922 /* Check spelling (unless at the end of the line).
3923 * Only do this when there is no syntax highlighting, the
3924 * @Spell cluster is not used or the current syntax item
3925 * contains the @Spell cluster. */
3926 if (has_spell && v >= word_end && v > cur_checked_col)
3928 spell_attr = 0;
3929 # ifdef FEAT_SYN_HL
3930 if (!attr_pri)
3931 char_attr = syntax_attr;
3932 # endif
3933 if (c != 0 && (
3934 # ifdef FEAT_SYN_HL
3935 !has_syntax ||
3936 # endif
3937 can_spell))
3939 char_u *prev_ptr, *p;
3940 int len;
3941 hlf_T spell_hlf = HLF_COUNT;
3942 # ifdef FEAT_MBYTE
3943 if (has_mbyte)
3945 prev_ptr = ptr - mb_l;
3946 v -= mb_l - 1;
3948 else
3949 # endif
3950 prev_ptr = ptr - 1;
3952 /* Use nextline[] if possible, it has the start of the
3953 * next line concatenated. */
3954 if ((prev_ptr - line) - nextlinecol >= 0)
3955 p = nextline + (prev_ptr - line) - nextlinecol;
3956 else
3957 p = prev_ptr;
3958 cap_col -= (int)(prev_ptr - line);
3959 len = spell_check(wp, p, &spell_hlf, &cap_col,
3960 nochange);
3961 word_end = v + len;
3963 /* In Insert mode only highlight a word that
3964 * doesn't touch the cursor. */
3965 if (spell_hlf != HLF_COUNT
3966 && (State & INSERT) != 0
3967 && wp->w_cursor.lnum == lnum
3968 && wp->w_cursor.col >=
3969 (colnr_T)(prev_ptr - line)
3970 && wp->w_cursor.col < (colnr_T)word_end)
3972 spell_hlf = HLF_COUNT;
3973 spell_redraw_lnum = lnum;
3976 if (spell_hlf == HLF_COUNT && p != prev_ptr
3977 && (p - nextline) + len > nextline_idx)
3979 /* Remember that the good word continues at the
3980 * start of the next line. */
3981 checked_lnum = lnum + 1;
3982 checked_col = (int)((p - nextline) + len - nextline_idx);
3985 /* Turn index into actual attributes. */
3986 if (spell_hlf != HLF_COUNT)
3987 spell_attr = highlight_attr[spell_hlf];
3989 if (cap_col > 0)
3991 if (p != prev_ptr
3992 && (p - nextline) + cap_col >= nextline_idx)
3994 /* Remember that the word in the next line
3995 * must start with a capital. */
3996 capcol_lnum = lnum + 1;
3997 cap_col = (int)((p - nextline) + cap_col
3998 - nextline_idx);
4000 else
4001 /* Compute the actual column. */
4002 cap_col += (int)(prev_ptr - line);
4006 if (spell_attr != 0)
4008 if (!attr_pri)
4009 char_attr = hl_combine_attr(char_attr, spell_attr);
4010 else
4011 char_attr = hl_combine_attr(spell_attr, char_attr);
4013 #endif
4014 #ifdef FEAT_LINEBREAK
4016 * Found last space before word: check for line break.
4018 if (wp->w_p_lbr && vim_isbreak(c) && !vim_isbreak(*ptr)
4019 && !wp->w_p_list)
4021 n_extra = win_lbr_chartabsize(wp, ptr - (
4022 # ifdef FEAT_MBYTE
4023 has_mbyte ? mb_l :
4024 # endif
4025 1), (colnr_T)vcol, NULL) - 1;
4026 c_extra = ' ';
4027 if (vim_iswhite(c))
4028 c = ' ';
4030 #endif
4032 if (trailcol != MAXCOL && ptr > line + trailcol && c == ' ')
4034 c = lcs_trail;
4035 if (!attr_pri)
4037 n_attr = 1;
4038 extra_attr = hl_attr(HLF_8);
4039 saved_attr2 = char_attr; /* save current attr */
4041 #ifdef FEAT_MBYTE
4042 mb_c = c;
4043 if (enc_utf8 && (*mb_char2len)(c) > 1)
4045 mb_utf8 = TRUE;
4046 u8cc[0] = 0;
4047 c = 0xc0;
4049 else
4050 mb_utf8 = FALSE;
4051 #endif
4056 * Handling of non-printable characters.
4058 if (!(chartab[c & 0xff] & CT_PRINT_CHAR))
4061 * when getting a character from the file, we may have to
4062 * turn it into something else on the way to putting it
4063 * into "ScreenLines".
4065 if (c == TAB && (!wp->w_p_list || lcs_tab1))
4067 /* tab amount depends on current column */
4068 n_extra = (int)wp->w_buffer->b_p_ts
4069 - vcol % (int)wp->w_buffer->b_p_ts - 1;
4070 #ifdef FEAT_MBYTE
4071 mb_utf8 = FALSE; /* don't draw as UTF-8 */
4072 #endif
4073 if (wp->w_p_list)
4075 c = lcs_tab1;
4076 c_extra = lcs_tab2;
4077 n_attr = n_extra + 1;
4078 extra_attr = hl_attr(HLF_8);
4079 saved_attr2 = char_attr; /* save current attr */
4080 #ifdef FEAT_MBYTE
4081 mb_c = c;
4082 if (enc_utf8 && (*mb_char2len)(c) > 1)
4084 mb_utf8 = TRUE;
4085 u8cc[0] = 0;
4086 c = 0xc0;
4088 #endif
4090 else
4092 c_extra = ' ';
4093 c = ' ';
4096 else if (c == NUL
4097 && ((wp->w_p_list && lcs_eol > 0)
4098 || ((fromcol >= 0 || fromcol_prev >= 0)
4099 && tocol > vcol
4100 #ifdef FEAT_VISUAL
4101 && VIsual_mode != Ctrl_V
4102 #endif
4103 && (
4104 # ifdef FEAT_RIGHTLEFT
4105 wp->w_p_rl ? (col >= 0) :
4106 # endif
4107 (col < W_WIDTH(wp)))
4108 && !(noinvcur
4109 && (colnr_T)vcol == wp->w_virtcol)))
4110 && lcs_eol_one >= 0)
4112 /* Display a '$' after the line or highlight an extra
4113 * character if the line break is included. */
4114 #if defined(FEAT_DIFF) || defined(LINE_ATTR)
4115 /* For a diff line the highlighting continues after the
4116 * "$". */
4117 if (
4118 # ifdef FEAT_DIFF
4119 diff_hlf == (hlf_T)0
4120 # ifdef LINE_ATTR
4122 # endif
4123 # endif
4124 # ifdef LINE_ATTR
4125 line_attr == 0
4126 # endif
4128 #endif
4130 #ifdef FEAT_VIRTUALEDIT
4131 /* In virtualedit, visual selections may extend
4132 * beyond end of line. */
4133 if (area_highlighting && virtual_active()
4134 && tocol != MAXCOL && vcol < tocol)
4135 n_extra = 0;
4136 else
4137 #endif
4139 p_extra = at_end_str;
4140 n_extra = 1;
4141 c_extra = NUL;
4144 if (wp->w_p_list)
4145 c = lcs_eol;
4146 else
4147 c = ' ';
4148 lcs_eol_one = -1;
4149 --ptr; /* put it back at the NUL */
4150 if (!attr_pri)
4152 extra_attr = hl_attr(HLF_AT);
4153 n_attr = 1;
4155 #ifdef FEAT_MBYTE
4156 mb_c = c;
4157 if (enc_utf8 && (*mb_char2len)(c) > 1)
4159 mb_utf8 = TRUE;
4160 u8cc[0] = 0;
4161 c = 0xc0;
4163 else
4164 mb_utf8 = FALSE; /* don't draw as UTF-8 */
4165 #endif
4167 else if (c != NUL)
4169 p_extra = transchar(c);
4170 #ifdef FEAT_RIGHTLEFT
4171 if ((dy_flags & DY_UHEX) && wp->w_p_rl)
4172 rl_mirror(p_extra); /* reverse "<12>" */
4173 #endif
4174 n_extra = byte2cells(c) - 1;
4175 c_extra = NUL;
4176 c = *p_extra++;
4177 if (!attr_pri)
4179 n_attr = n_extra + 1;
4180 extra_attr = hl_attr(HLF_8);
4181 saved_attr2 = char_attr; /* save current attr */
4183 #ifdef FEAT_MBYTE
4184 mb_utf8 = FALSE; /* don't draw as UTF-8 */
4185 #endif
4187 #ifdef FEAT_VIRTUALEDIT
4188 else if (VIsual_active
4189 && (VIsual_mode == Ctrl_V
4190 || VIsual_mode == 'v')
4191 && virtual_active()
4192 && tocol != MAXCOL
4193 && vcol < tocol
4194 && (
4195 # ifdef FEAT_RIGHTLEFT
4196 wp->w_p_rl ? (col >= 0) :
4197 # endif
4198 (col < W_WIDTH(wp))))
4200 c = ' ';
4201 --ptr; /* put it back at the NUL */
4203 #endif
4204 #if defined(LINE_ATTR)
4205 else if ((
4206 # ifdef FEAT_DIFF
4207 diff_hlf != (hlf_T)0 ||
4208 # endif
4209 line_attr != 0
4210 ) && (
4211 # ifdef FEAT_RIGHTLEFT
4212 wp->w_p_rl ? (col >= 0) :
4213 # endif
4214 (col < W_WIDTH(wp))))
4216 /* Highlight until the right side of the window */
4217 c = ' ';
4218 --ptr; /* put it back at the NUL */
4220 /* Remember we do the char for line highlighting. */
4221 ++did_line_attr;
4223 /* don't do search HL for the rest of the line */
4224 if (line_attr != 0 && char_attr == search_attr && col > 0)
4225 char_attr = line_attr;
4226 # ifdef FEAT_DIFF
4227 if (diff_hlf == HLF_TXD)
4229 diff_hlf = HLF_CHD;
4230 if (attr == 0 || char_attr != attr)
4231 char_attr = hl_attr(diff_hlf);
4233 # endif
4235 #endif
4239 /* Don't override visual selection highlighting. */
4240 if (n_attr > 0
4241 && draw_state == WL_LINE
4242 && !attr_pri)
4243 char_attr = extra_attr;
4245 #if defined(FEAT_XIM) && defined(FEAT_GUI_GTK)
4246 /* XIM don't send preedit_start and preedit_end, but they send
4247 * preedit_changed and commit. Thus Vim can't set "im_is_active", use
4248 * im_is_preediting() here. */
4249 if (xic != NULL
4250 && lnum == curwin->w_cursor.lnum
4251 && (State & INSERT)
4252 && !p_imdisable
4253 && im_is_preediting()
4254 && draw_state == WL_LINE)
4256 colnr_T tcol;
4258 if (preedit_end_col == MAXCOL)
4259 getvcol(curwin, &(curwin->w_cursor), &tcol, NULL, NULL);
4260 else
4261 tcol = preedit_end_col;
4262 if ((long)preedit_start_col <= vcol && vcol < (long)tcol)
4264 if (feedback_old_attr < 0)
4266 feedback_col = 0;
4267 feedback_old_attr = char_attr;
4269 char_attr = im_get_feedback_attr(feedback_col);
4270 if (char_attr < 0)
4271 char_attr = feedback_old_attr;
4272 feedback_col++;
4274 else if (feedback_old_attr >= 0)
4276 char_attr = feedback_old_attr;
4277 feedback_old_attr = -1;
4278 feedback_col = 0;
4281 #endif
4283 * Handle the case where we are in column 0 but not on the first
4284 * character of the line and the user wants us to show us a
4285 * special character (via 'listchars' option "precedes:<char>".
4287 if (lcs_prec_todo != NUL
4288 && (wp->w_p_wrap ? wp->w_skipcol > 0 : wp->w_leftcol > 0)
4289 #ifdef FEAT_DIFF
4290 && filler_todo <= 0
4291 #endif
4292 && draw_state > WL_NR
4293 && c != NUL)
4295 c = lcs_prec;
4296 lcs_prec_todo = NUL;
4297 #ifdef FEAT_MBYTE
4298 mb_c = c;
4299 if (enc_utf8 && (*mb_char2len)(c) > 1)
4301 mb_utf8 = TRUE;
4302 u8cc[0] = 0;
4303 c = 0xc0;
4305 else
4306 mb_utf8 = FALSE; /* don't draw as UTF-8 */
4307 #endif
4308 if (!attr_pri)
4310 saved_attr3 = char_attr; /* save current attr */
4311 char_attr = hl_attr(HLF_AT); /* later copied to char_attr */
4312 n_attr3 = 1;
4317 * At end of the text line or just after the last character.
4319 if (c == NUL
4320 #if defined(LINE_ATTR)
4321 || did_line_attr == 1
4322 #endif
4325 #ifdef FEAT_SEARCH_EXTRA
4326 long prevcol = (long)(ptr - line) - (c == NUL);
4328 /* we're not really at that column when skipping some text */
4329 if ((long)(wp->w_p_wrap ? wp->w_skipcol : wp->w_leftcol) > prevcol)
4330 ++prevcol;
4331 #endif
4333 /* invert at least one char, used for Visual and empty line or
4334 * highlight match at end of line. If it's beyond the last
4335 * char on the screen, just overwrite that one (tricky!) Not
4336 * needed when a '$' was displayed for 'list'. */
4337 #ifdef FEAT_SEARCH_EXTRA
4338 prevcol_hl_flag = FALSE;
4339 if (prevcol == (long)search_hl.startcol)
4340 prevcol_hl_flag = TRUE;
4341 else
4343 cur = wp->w_match_head;
4344 while (cur != NULL)
4346 if (prevcol == (long)cur->hl.startcol)
4348 prevcol_hl_flag = TRUE;
4349 break;
4351 cur = cur->next;
4354 #endif
4355 if (lcs_eol == lcs_eol_one
4356 && ((area_attr != 0 && vcol == fromcol && c == NUL)
4357 #ifdef FEAT_SEARCH_EXTRA
4358 /* highlight 'hlsearch' match at end of line */
4359 || (prevcol_hl_flag == TRUE
4360 # if defined(LINE_ATTR)
4361 && did_line_attr <= 1
4362 # endif
4364 #endif
4367 int n = 0;
4369 #ifdef FEAT_RIGHTLEFT
4370 if (wp->w_p_rl)
4372 if (col < 0)
4373 n = 1;
4375 else
4376 #endif
4378 if (col >= W_WIDTH(wp))
4379 n = -1;
4381 if (n != 0)
4383 /* At the window boundary, highlight the last character
4384 * instead (better than nothing). */
4385 off += n;
4386 col += n;
4388 else
4390 /* Add a blank character to highlight. */
4391 ScreenLines[off] = ' ';
4392 #ifdef FEAT_MBYTE
4393 if (enc_utf8)
4394 ScreenLinesUC[off] = 0;
4395 #endif
4397 #ifdef FEAT_SEARCH_EXTRA
4398 if (area_attr == 0)
4400 /* Use attributes from match with highest priority among
4401 * 'search_hl' and the match list. */
4402 char_attr = search_hl.attr;
4403 cur = wp->w_match_head;
4404 shl_flag = FALSE;
4405 while (cur != NULL || shl_flag == FALSE)
4407 if (shl_flag == FALSE
4408 && ((cur != NULL
4409 && cur->priority > SEARCH_HL_PRIORITY)
4410 || cur == NULL))
4412 shl = &search_hl;
4413 shl_flag = TRUE;
4415 else
4416 shl = &cur->hl;
4417 if ((ptr - line) - 1 == (long)shl->startcol)
4418 char_attr = shl->attr;
4419 if (shl != &search_hl && cur != NULL)
4420 cur = cur->next;
4423 #endif
4424 ScreenAttrs[off] = char_attr;
4425 #ifdef FEAT_RIGHTLEFT
4426 if (wp->w_p_rl)
4428 --col;
4429 --off;
4431 else
4432 #endif
4434 ++col;
4435 ++off;
4437 ++vcol;
4438 #ifdef FEAT_SYN_HL
4439 eol_hl_off = 1;
4440 #endif
4445 * At end of the text line.
4447 if (c == NUL)
4449 #ifdef FEAT_SYN_HL
4450 if (eol_hl_off > 0 && vcol - eol_hl_off == (long)wp->w_virtcol)
4452 /* highlight last char after line */
4453 --col;
4454 --off;
4455 --vcol;
4458 /* Highlight 'cursorcolumn' past end of the line. */
4459 if (wp->w_p_wrap)
4460 v = wp->w_skipcol;
4461 else
4462 v = wp->w_leftcol;
4463 /* check if line ends before left margin */
4464 if (vcol < v + col - win_col_off(wp))
4466 vcol = v + col - win_col_off(wp);
4467 if (wp->w_p_cuc
4468 && (int)wp->w_virtcol >= vcol - eol_hl_off
4469 && (int)wp->w_virtcol < W_WIDTH(wp) * (row - startrow + 1)
4471 && lnum != wp->w_cursor.lnum
4472 # ifdef FEAT_RIGHTLEFT
4473 && !wp->w_p_rl
4474 # endif
4477 while (col < W_WIDTH(wp))
4479 ScreenLines[off] = ' ';
4480 #ifdef FEAT_MBYTE
4481 if (enc_utf8)
4482 ScreenLinesUC[off] = 0;
4483 #endif
4484 ++col;
4485 if (vcol == (long)wp->w_virtcol)
4487 ScreenAttrs[off] = hl_attr(HLF_CUC);
4488 break;
4490 ScreenAttrs[off++] = 0;
4491 ++vcol;
4494 #endif
4496 SCREEN_LINE(screen_row, W_WINCOL(wp), col, (int)W_WIDTH(wp),
4497 wp->w_p_rl);
4498 row++;
4501 * Update w_cline_height and w_cline_folded if the cursor line was
4502 * updated (saves a call to plines() later).
4504 if (wp == curwin && lnum == curwin->w_cursor.lnum)
4506 curwin->w_cline_row = startrow;
4507 curwin->w_cline_height = row - startrow;
4508 #ifdef FEAT_FOLDING
4509 curwin->w_cline_folded = FALSE;
4510 #endif
4511 curwin->w_valid |= (VALID_CHEIGHT|VALID_CROW);
4514 break;
4517 /* line continues beyond line end */
4518 if (lcs_ext
4519 && !wp->w_p_wrap
4520 #ifdef FEAT_DIFF
4521 && filler_todo <= 0
4522 #endif
4523 && (
4524 #ifdef FEAT_RIGHTLEFT
4525 wp->w_p_rl ? col == 0 :
4526 #endif
4527 col == W_WIDTH(wp) - 1)
4528 && (*ptr != NUL
4529 || (wp->w_p_list && lcs_eol_one > 0)
4530 || (n_extra && (c_extra != NUL || *p_extra != NUL))))
4532 c = lcs_ext;
4533 char_attr = hl_attr(HLF_AT);
4534 #ifdef FEAT_MBYTE
4535 mb_c = c;
4536 if (enc_utf8 && (*mb_char2len)(c) > 1)
4538 mb_utf8 = TRUE;
4539 u8cc[0] = 0;
4540 c = 0xc0;
4542 else
4543 mb_utf8 = FALSE;
4544 #endif
4547 #ifdef FEAT_SYN_HL
4548 /* Highlight the cursor column if 'cursorcolumn' is set. But don't
4549 * highlight the cursor position itself. */
4550 if (wp->w_p_cuc && vcol == (long)wp->w_virtcol
4551 && lnum != wp->w_cursor.lnum
4552 && draw_state == WL_LINE)
4554 vcol_save_attr = char_attr;
4555 char_attr = hl_combine_attr(char_attr, hl_attr(HLF_CUC));
4557 else
4558 vcol_save_attr = -1;
4559 #endif
4562 * Store character to be displayed.
4563 * Skip characters that are left of the screen for 'nowrap'.
4565 vcol_prev = vcol;
4566 if (draw_state < WL_LINE || n_skip <= 0)
4569 * Store the character.
4571 #if defined(FEAT_RIGHTLEFT) && defined(FEAT_MBYTE)
4572 if (has_mbyte && wp->w_p_rl && (*mb_char2cells)(mb_c) > 1)
4574 /* A double-wide character is: put first halve in left cell. */
4575 --off;
4576 --col;
4578 #endif
4579 ScreenLines[off] = c;
4580 #ifdef FEAT_MBYTE
4581 if (enc_dbcs == DBCS_JPNU)
4582 ScreenLines2[off] = mb_c & 0xff;
4583 else if (enc_utf8)
4585 if (mb_utf8)
4587 int i;
4589 ScreenLinesUC[off] = mb_c;
4590 if ((c & 0xff) == 0)
4591 ScreenLines[off] = 0x80; /* avoid storing zero */
4592 for (i = 0; i < Screen_mco; ++i)
4594 ScreenLinesC[i][off] = u8cc[i];
4595 if (u8cc[i] == 0)
4596 break;
4599 else
4600 ScreenLinesUC[off] = 0;
4602 if (multi_attr)
4604 ScreenAttrs[off] = multi_attr;
4605 multi_attr = 0;
4607 else
4608 #endif
4609 ScreenAttrs[off] = char_attr;
4611 #ifdef FEAT_MBYTE
4612 if (has_mbyte && (*mb_char2cells)(mb_c) > 1)
4614 /* Need to fill two screen columns. */
4615 ++off;
4616 ++col;
4617 if (enc_utf8)
4618 /* UTF-8: Put a 0 in the second screen char. */
4619 ScreenLines[off] = 0;
4620 else
4621 /* DBCS: Put second byte in the second screen char. */
4622 ScreenLines[off] = mb_c & 0xff;
4623 ++vcol;
4624 /* When "tocol" is halfway a character, set it to the end of
4625 * the character, otherwise highlighting won't stop. */
4626 if (tocol == vcol)
4627 ++tocol;
4628 #ifdef FEAT_RIGHTLEFT
4629 if (wp->w_p_rl)
4631 /* now it's time to backup one cell */
4632 --off;
4633 --col;
4635 #endif
4637 #endif
4638 #ifdef FEAT_RIGHTLEFT
4639 if (wp->w_p_rl)
4641 --off;
4642 --col;
4644 else
4645 #endif
4647 ++off;
4648 ++col;
4651 else
4652 --n_skip;
4654 /* Only advance the "vcol" when after the 'number' column. */
4655 if (draw_state >= WL_SBR
4656 #ifdef FEAT_DIFF
4657 && filler_todo <= 0
4658 #endif
4660 ++vcol;
4662 #ifdef FEAT_SYN_HL
4663 if (vcol_save_attr >= 0)
4664 char_attr = vcol_save_attr;
4665 #endif
4667 /* restore attributes after "predeces" in 'listchars' */
4668 if (draw_state > WL_NR && n_attr3 > 0 && --n_attr3 == 0)
4669 char_attr = saved_attr3;
4671 /* restore attributes after last 'listchars' or 'number' char */
4672 if (n_attr > 0 && draw_state == WL_LINE && --n_attr == 0)
4673 char_attr = saved_attr2;
4676 * At end of screen line and there is more to come: Display the line
4677 * so far. If there is no more to display it is caught above.
4679 if ((
4680 #ifdef FEAT_RIGHTLEFT
4681 wp->w_p_rl ? (col < 0) :
4682 #endif
4683 (col >= W_WIDTH(wp)))
4684 && (*ptr != NUL
4685 #ifdef FEAT_DIFF
4686 || filler_todo > 0
4687 #endif
4688 || (wp->w_p_list && lcs_eol != NUL && p_extra != at_end_str)
4689 || (n_extra != 0 && (c_extra != NUL || *p_extra != NUL)))
4692 SCREEN_LINE(screen_row, W_WINCOL(wp), col, (int)W_WIDTH(wp),
4693 wp->w_p_rl);
4694 ++row;
4695 ++screen_row;
4697 /* When not wrapping and finished diff lines, or when displayed
4698 * '$' and highlighting until last column, break here. */
4699 if ((!wp->w_p_wrap
4700 #ifdef FEAT_DIFF
4701 && filler_todo <= 0
4702 #endif
4703 ) || lcs_eol_one == -1)
4704 break;
4706 /* When the window is too narrow draw all "@" lines. */
4707 if (draw_state != WL_LINE
4708 #ifdef FEAT_DIFF
4709 && filler_todo <= 0
4710 #endif
4713 win_draw_end(wp, '@', ' ', row, wp->w_height, HLF_AT);
4714 #ifdef FEAT_VERTSPLIT
4715 draw_vsep_win(wp, row);
4716 #endif
4717 row = endrow;
4720 /* When line got too long for screen break here. */
4721 if (row == endrow)
4723 ++row;
4724 break;
4727 if (screen_cur_row == screen_row - 1
4728 #ifdef FEAT_DIFF
4729 && filler_todo <= 0
4730 #endif
4731 && W_WIDTH(wp) == Columns)
4733 /* Remember that the line wraps, used for modeless copy. */
4734 LineWraps[screen_row - 1] = TRUE;
4737 * Special trick to make copy/paste of wrapped lines work with
4738 * xterm/screen: write an extra character beyond the end of
4739 * the line. This will work with all terminal types
4740 * (regardless of the xn,am settings).
4741 * Only do this on a fast tty.
4742 * Only do this if the cursor is on the current line
4743 * (something has been written in it).
4744 * Don't do this for the GUI.
4745 * Don't do this for double-width characters.
4746 * Don't do this for a window not at the right screen border.
4748 if (p_tf
4749 #ifdef FEAT_GUI
4750 && !gui.in_use
4751 #endif
4752 #ifdef FEAT_MBYTE
4753 && !(has_mbyte
4754 && ((*mb_off2cells)(LineOffset[screen_row],
4755 LineOffset[screen_row] + screen_Columns)
4756 == 2
4757 || (*mb_off2cells)(LineOffset[screen_row - 1]
4758 + (int)Columns - 2,
4759 LineOffset[screen_row] + screen_Columns)
4760 == 2))
4761 #endif
4764 /* First make sure we are at the end of the screen line,
4765 * then output the same character again to let the
4766 * terminal know about the wrap. If the terminal doesn't
4767 * auto-wrap, we overwrite the character. */
4768 if (screen_cur_col != W_WIDTH(wp))
4769 screen_char(LineOffset[screen_row - 1]
4770 + (unsigned)Columns - 1,
4771 screen_row - 1, (int)(Columns - 1));
4773 #ifdef FEAT_MBYTE
4774 /* When there is a multi-byte character, just output a
4775 * space to keep it simple. */
4776 if (has_mbyte && MB_BYTE2LEN(ScreenLines[LineOffset[
4777 screen_row - 1] + (Columns - 1)]) > 1)
4778 out_char(' ');
4779 else
4780 #endif
4781 out_char(ScreenLines[LineOffset[screen_row - 1]
4782 + (Columns - 1)]);
4783 /* force a redraw of the first char on the next line */
4784 ScreenAttrs[LineOffset[screen_row]] = (sattr_T)-1;
4785 screen_start(); /* don't know where cursor is now */
4789 col = 0;
4790 off = (unsigned)(current_ScreenLine - ScreenLines);
4791 #ifdef FEAT_RIGHTLEFT
4792 if (wp->w_p_rl)
4794 col = W_WIDTH(wp) - 1; /* col is not used if breaking! */
4795 off += col;
4797 #endif
4799 /* reset the drawing state for the start of a wrapped line */
4800 draw_state = WL_START;
4801 saved_n_extra = n_extra;
4802 saved_p_extra = p_extra;
4803 saved_c_extra = c_extra;
4804 saved_char_attr = char_attr;
4805 n_extra = 0;
4806 lcs_prec_todo = lcs_prec;
4807 #ifdef FEAT_LINEBREAK
4808 # ifdef FEAT_DIFF
4809 if (filler_todo <= 0)
4810 # endif
4811 need_showbreak = TRUE;
4812 #endif
4813 #ifdef FEAT_DIFF
4814 --filler_todo;
4815 /* When the filler lines are actually below the last line of the
4816 * file, don't draw the line itself, break here. */
4817 if (filler_todo == 0 && wp->w_botfill)
4818 break;
4819 #endif
4822 } /* for every character in the line */
4824 #ifdef FEAT_SPELL
4825 /* After an empty line check first word for capital. */
4826 if (*skipwhite(line) == NUL)
4828 capcol_lnum = lnum + 1;
4829 cap_col = 0;
4831 #endif
4833 return row;
4836 #ifdef FEAT_MBYTE
4837 static int comp_char_differs __ARGS((int, int));
4840 * Return if the composing characters at "off_from" and "off_to" differ.
4842 static int
4843 comp_char_differs(off_from, off_to)
4844 int off_from;
4845 int off_to;
4847 int i;
4849 for (i = 0; i < Screen_mco; ++i)
4851 if (ScreenLinesC[i][off_from] != ScreenLinesC[i][off_to])
4852 return TRUE;
4853 if (ScreenLinesC[i][off_from] == 0)
4854 break;
4856 return FALSE;
4858 #endif
4861 * Check whether the given character needs redrawing:
4862 * - the (first byte of the) character is different
4863 * - the attributes are different
4864 * - the character is multi-byte and the next byte is different
4865 * - the character is two cells wide and the second cell differs.
4867 static int
4868 char_needs_redraw(off_from, off_to, cols)
4869 int off_from;
4870 int off_to;
4871 int cols;
4873 if (cols > 0
4874 && ((ScreenLines[off_from] != ScreenLines[off_to]
4875 || ScreenAttrs[off_from] != ScreenAttrs[off_to])
4877 #ifdef FEAT_MBYTE
4878 || (enc_dbcs != 0
4879 && MB_BYTE2LEN(ScreenLines[off_from]) > 1
4880 && (enc_dbcs == DBCS_JPNU && ScreenLines[off_from] == 0x8e
4881 ? ScreenLines2[off_from] != ScreenLines2[off_to]
4882 : (cols > 1 && ScreenLines[off_from + 1]
4883 != ScreenLines[off_to + 1])))
4884 || (enc_utf8
4885 && (ScreenLinesUC[off_from] != ScreenLinesUC[off_to]
4886 || (ScreenLinesUC[off_from] != 0
4887 && comp_char_differs(off_from, off_to))
4888 || (cols > 1 && ScreenLines[off_from + 1]
4889 != ScreenLines[off_to + 1])))
4890 #endif
4892 return TRUE;
4893 return FALSE;
4897 * Move one "cooked" screen line to the screen, but only the characters that
4898 * have actually changed. Handle insert/delete character.
4899 * "coloff" gives the first column on the screen for this line.
4900 * "endcol" gives the columns where valid characters are.
4901 * "clear_width" is the width of the window. It's > 0 if the rest of the line
4902 * needs to be cleared, negative otherwise.
4903 * "rlflag" is TRUE in a rightleft window:
4904 * When TRUE and "clear_width" > 0, clear columns 0 to "endcol"
4905 * When FALSE and "clear_width" > 0, clear columns "endcol" to "clear_width"
4907 static void
4908 screen_line(row, coloff, endcol, clear_width
4909 #ifdef FEAT_RIGHTLEFT
4910 , rlflag
4911 #endif
4913 int row;
4914 int coloff;
4915 int endcol;
4916 int clear_width;
4917 #ifdef FEAT_RIGHTLEFT
4918 int rlflag;
4919 #endif
4921 unsigned off_from;
4922 unsigned off_to;
4923 #ifdef FEAT_MBYTE
4924 unsigned max_off_from;
4925 unsigned max_off_to;
4926 #endif
4927 int col = 0;
4928 #if defined(FEAT_GUI) || defined(UNIX) || defined(FEAT_VERTSPLIT)
4929 int hl;
4930 #endif
4931 int force = FALSE; /* force update rest of the line */
4932 int redraw_this /* bool: does character need redraw? */
4933 #ifdef FEAT_GUI
4934 = TRUE /* For GUI when while-loop empty */
4935 #endif
4937 int redraw_next; /* redraw_this for next character */
4938 #ifdef FEAT_MBYTE
4939 int clear_next = FALSE;
4940 int char_cells; /* 1: normal char */
4941 /* 2: occupies two display cells */
4942 # define CHAR_CELLS char_cells
4943 #else
4944 # define CHAR_CELLS 1
4945 #endif
4947 # ifdef FEAT_CLIPBOARD
4948 clip_may_clear_selection(row, row);
4949 # endif
4951 off_from = (unsigned)(current_ScreenLine - ScreenLines);
4952 off_to = LineOffset[row] + coloff;
4953 #ifdef FEAT_MBYTE
4954 max_off_from = off_from + screen_Columns;
4955 max_off_to = LineOffset[row] + screen_Columns;
4956 #endif
4958 #ifdef FEAT_RIGHTLEFT
4959 if (rlflag)
4961 /* Clear rest first, because it's left of the text. */
4962 if (clear_width > 0)
4964 while (col <= endcol && ScreenLines[off_to] == ' '
4965 && ScreenAttrs[off_to] == 0
4966 # ifdef FEAT_MBYTE
4967 && (!enc_utf8 || ScreenLinesUC[off_to] == 0)
4968 # endif
4971 ++off_to;
4972 ++col;
4974 if (col <= endcol)
4975 screen_fill(row, row + 1, col + coloff,
4976 endcol + coloff + 1, ' ', ' ', 0);
4978 col = endcol + 1;
4979 off_to = LineOffset[row] + col + coloff;
4980 off_from += col;
4981 endcol = (clear_width > 0 ? clear_width : -clear_width);
4983 #endif /* FEAT_RIGHTLEFT */
4985 redraw_next = char_needs_redraw(off_from, off_to, endcol - col);
4987 while (col < endcol)
4989 #ifdef FEAT_MBYTE
4990 if (has_mbyte && (col + 1 < endcol))
4991 char_cells = (*mb_off2cells)(off_from, max_off_from);
4992 else
4993 char_cells = 1;
4994 #endif
4996 redraw_this = redraw_next;
4997 redraw_next = force || char_needs_redraw(off_from + CHAR_CELLS,
4998 off_to + CHAR_CELLS, endcol - col - CHAR_CELLS);
5000 #ifdef FEAT_GUI
5001 /* If the next character was bold, then redraw the current character to
5002 * remove any pixels that might have spilt over into us. This only
5003 * happens in the GUI.
5005 if (redraw_next && gui.in_use)
5007 hl = ScreenAttrs[off_to + CHAR_CELLS];
5008 if (hl > HL_ALL)
5009 hl = syn_attr2attr(hl);
5010 if (hl & HL_BOLD)
5011 redraw_this = TRUE;
5013 #endif
5015 if (redraw_this)
5018 * Special handling when 'xs' termcap flag set (hpterm):
5019 * Attributes for characters are stored at the position where the
5020 * cursor is when writing the highlighting code. The
5021 * start-highlighting code must be written with the cursor on the
5022 * first highlighted character. The stop-highlighting code must
5023 * be written with the cursor just after the last highlighted
5024 * character.
5025 * Overwriting a character doesn't remove it's highlighting. Need
5026 * to clear the rest of the line, and force redrawing it
5027 * completely.
5029 if ( p_wiv
5030 && !force
5031 #ifdef FEAT_GUI
5032 && !gui.in_use
5033 #endif
5034 && ScreenAttrs[off_to] != 0
5035 && ScreenAttrs[off_from] != ScreenAttrs[off_to])
5038 * Need to remove highlighting attributes here.
5040 windgoto(row, col + coloff);
5041 out_str(T_CE); /* clear rest of this screen line */
5042 screen_start(); /* don't know where cursor is now */
5043 force = TRUE; /* force redraw of rest of the line */
5044 redraw_next = TRUE; /* or else next char would miss out */
5047 * If the previous character was highlighted, need to stop
5048 * highlighting at this character.
5050 if (col + coloff > 0 && ScreenAttrs[off_to - 1] != 0)
5052 screen_attr = ScreenAttrs[off_to - 1];
5053 term_windgoto(row, col + coloff);
5054 screen_stop_highlight();
5056 else
5057 screen_attr = 0; /* highlighting has stopped */
5059 #ifdef FEAT_MBYTE
5060 if (enc_dbcs != 0)
5062 /* Check if overwriting a double-byte with a single-byte or
5063 * the other way around requires another character to be
5064 * redrawn. For UTF-8 this isn't needed, because comparing
5065 * ScreenLinesUC[] is sufficient. */
5066 if (char_cells == 1
5067 && col + 1 < endcol
5068 && (*mb_off2cells)(off_to, max_off_to) > 1)
5070 /* Writing a single-cell character over a double-cell
5071 * character: need to redraw the next cell. */
5072 ScreenLines[off_to + 1] = 0;
5073 redraw_next = TRUE;
5075 else if (char_cells == 2
5076 && col + 2 < endcol
5077 && (*mb_off2cells)(off_to, max_off_to) == 1
5078 && (*mb_off2cells)(off_to + 1, max_off_to) > 1)
5080 /* Writing the second half of a double-cell character over
5081 * a double-cell character: need to redraw the second
5082 * cell. */
5083 ScreenLines[off_to + 2] = 0;
5084 redraw_next = TRUE;
5087 if (enc_dbcs == DBCS_JPNU)
5088 ScreenLines2[off_to] = ScreenLines2[off_from];
5090 /* When writing a single-width character over a double-width
5091 * character and at the end of the redrawn text, need to clear out
5092 * the right halve of the old character.
5093 * Also required when writing the right halve of a double-width
5094 * char over the left halve of an existing one. */
5095 if (has_mbyte && col + char_cells == endcol
5096 && ((char_cells == 1
5097 && (*mb_off2cells)(off_to, max_off_to) > 1)
5098 || (char_cells == 2
5099 && (*mb_off2cells)(off_to, max_off_to) == 1
5100 && (*mb_off2cells)(off_to + 1, max_off_to) > 1)))
5101 clear_next = TRUE;
5102 #endif
5104 ScreenLines[off_to] = ScreenLines[off_from];
5105 #ifdef FEAT_MBYTE
5106 if (enc_utf8)
5108 ScreenLinesUC[off_to] = ScreenLinesUC[off_from];
5109 if (ScreenLinesUC[off_from] != 0)
5111 int i;
5113 for (i = 0; i < Screen_mco; ++i)
5114 ScreenLinesC[i][off_to] = ScreenLinesC[i][off_from];
5117 if (char_cells == 2)
5118 ScreenLines[off_to + 1] = ScreenLines[off_from + 1];
5119 #endif
5121 #if defined(FEAT_GUI) || defined(UNIX)
5122 /* The bold trick makes a single row of pixels appear in the next
5123 * character. When a bold character is removed, the next
5124 * character should be redrawn too. This happens for our own GUI
5125 * and for some xterms. */
5126 if (
5127 # ifdef FEAT_GUI
5128 gui.in_use
5129 # endif
5130 # if defined(FEAT_GUI) && defined(UNIX)
5132 # endif
5133 # ifdef UNIX
5134 term_is_xterm
5135 # endif
5138 hl = ScreenAttrs[off_to];
5139 if (hl > HL_ALL)
5140 hl = syn_attr2attr(hl);
5141 if (hl & HL_BOLD)
5142 redraw_next = TRUE;
5144 #endif
5145 ScreenAttrs[off_to] = ScreenAttrs[off_from];
5146 #ifdef FEAT_MBYTE
5147 /* For simplicity set the attributes of second half of a
5148 * double-wide character equal to the first half. */
5149 if (char_cells == 2)
5150 ScreenAttrs[off_to + 1] = ScreenAttrs[off_from];
5152 if (enc_dbcs != 0 && char_cells == 2)
5153 screen_char_2(off_to, row, col + coloff);
5154 else
5155 #endif
5156 screen_char(off_to, row, col + coloff);
5158 else if ( p_wiv
5159 #ifdef FEAT_GUI
5160 && !gui.in_use
5161 #endif
5162 && col + coloff > 0)
5164 if (ScreenAttrs[off_to] == ScreenAttrs[off_to - 1])
5167 * Don't output stop-highlight when moving the cursor, it will
5168 * stop the highlighting when it should continue.
5170 screen_attr = 0;
5172 else if (screen_attr != 0)
5173 screen_stop_highlight();
5176 off_to += CHAR_CELLS;
5177 off_from += CHAR_CELLS;
5178 col += CHAR_CELLS;
5181 #ifdef FEAT_MBYTE
5182 if (clear_next)
5184 /* Clear the second half of a double-wide character of which the left
5185 * half was overwritten with a single-wide character. */
5186 ScreenLines[off_to] = ' ';
5187 if (enc_utf8)
5188 ScreenLinesUC[off_to] = 0;
5189 screen_char(off_to, row, col + coloff);
5191 #endif
5193 if (clear_width > 0
5194 #ifdef FEAT_RIGHTLEFT
5195 && !rlflag
5196 #endif
5199 #ifdef FEAT_GUI
5200 int startCol = col;
5201 #endif
5203 /* blank out the rest of the line */
5204 while (col < clear_width && ScreenLines[off_to] == ' '
5205 && ScreenAttrs[off_to] == 0
5206 #ifdef FEAT_MBYTE
5207 && (!enc_utf8 || ScreenLinesUC[off_to] == 0)
5208 #endif
5211 ++off_to;
5212 ++col;
5214 if (col < clear_width)
5216 #ifdef FEAT_GUI
5218 * In the GUI, clearing the rest of the line may leave pixels
5219 * behind if the first character cleared was bold. Some bold
5220 * fonts spill over the left. In this case we redraw the previous
5221 * character too. If we didn't skip any blanks above, then we
5222 * only redraw if the character wasn't already redrawn anyway.
5224 if (gui.in_use && (col > startCol || !redraw_this))
5226 hl = ScreenAttrs[off_to];
5227 if (hl > HL_ALL || (hl & HL_BOLD))
5229 int prev_cells = 1;
5230 # ifdef FEAT_MBYTE
5231 if (enc_utf8)
5232 /* for utf-8, ScreenLines[char_offset + 1] == 0 means
5233 * that its width is 2. */
5234 prev_cells = ScreenLines[off_to - 1] == 0 ? 2 : 1;
5235 else if (enc_dbcs != 0)
5237 /* find previous character by counting from first
5238 * column and get its width. */
5239 unsigned off = LineOffset[row];
5240 unsigned max_off = LineOffset[row] + screen_Columns;
5242 while (off < off_to)
5244 prev_cells = (*mb_off2cells)(off, max_off);
5245 off += prev_cells;
5249 if (enc_dbcs != 0 && prev_cells > 1)
5250 screen_char_2(off_to - prev_cells, row,
5251 col + coloff - prev_cells);
5252 else
5253 # endif
5254 screen_char(off_to - prev_cells, row,
5255 col + coloff - prev_cells);
5258 #endif
5259 screen_fill(row, row + 1, col + coloff, clear_width + coloff,
5260 ' ', ' ', 0);
5261 #ifdef FEAT_VERTSPLIT
5262 off_to += clear_width - col;
5263 col = clear_width;
5264 #endif
5268 if (clear_width > 0)
5270 #ifdef FEAT_VERTSPLIT
5271 /* For a window that's left of another, draw the separator char. */
5272 if (col + coloff < Columns)
5274 int c;
5276 c = fillchar_vsep(&hl);
5277 if (ScreenLines[off_to] != c
5278 # ifdef FEAT_MBYTE
5279 || (enc_utf8 && (int)ScreenLinesUC[off_to]
5280 != (c >= 0x80 ? c : 0))
5281 # endif
5282 || ScreenAttrs[off_to] != hl)
5284 ScreenLines[off_to] = c;
5285 ScreenAttrs[off_to] = hl;
5286 # ifdef FEAT_MBYTE
5287 if (enc_utf8)
5289 if (c >= 0x80)
5291 ScreenLinesUC[off_to] = c;
5292 ScreenLinesC[0][off_to] = 0;
5294 else
5295 ScreenLinesUC[off_to] = 0;
5297 # endif
5298 screen_char(off_to, row, col + coloff);
5301 else
5302 #endif
5303 LineWraps[row] = FALSE;
5307 #if defined(FEAT_RIGHTLEFT) || defined(PROTO)
5309 * Mirror text "str" for right-left displaying.
5310 * Only works for single-byte characters (e.g., numbers).
5312 void
5313 rl_mirror(str)
5314 char_u *str;
5316 char_u *p1, *p2;
5317 int t;
5319 for (p1 = str, p2 = str + STRLEN(str) - 1; p1 < p2; ++p1, --p2)
5321 t = *p1;
5322 *p1 = *p2;
5323 *p2 = t;
5326 #endif
5328 #if defined(FEAT_WINDOWS) || defined(PROTO)
5330 * mark all status lines for redraw; used after first :cd
5332 void
5333 status_redraw_all()
5335 win_T *wp;
5337 for (wp = firstwin; wp; wp = wp->w_next)
5338 if (wp->w_status_height)
5340 wp->w_redr_status = TRUE;
5341 redraw_later(VALID);
5346 * mark all status lines of the current buffer for redraw
5348 void
5349 status_redraw_curbuf()
5351 win_T *wp;
5353 for (wp = firstwin; wp; wp = wp->w_next)
5354 if (wp->w_status_height != 0 && wp->w_buffer == curbuf)
5356 wp->w_redr_status = TRUE;
5357 redraw_later(VALID);
5362 * Redraw all status lines that need to be redrawn.
5364 void
5365 redraw_statuslines()
5367 win_T *wp;
5369 for (wp = firstwin; wp; wp = wp->w_next)
5370 if (wp->w_redr_status)
5371 win_redr_status(wp);
5372 if (redraw_tabline)
5373 draw_tabline();
5375 #endif
5377 #if (defined(FEAT_WILDMENU) && defined(FEAT_VERTSPLIT)) || defined(PROTO)
5379 * Redraw all status lines at the bottom of frame "frp".
5381 void
5382 win_redraw_last_status(frp)
5383 frame_T *frp;
5385 if (frp->fr_layout == FR_LEAF)
5386 frp->fr_win->w_redr_status = TRUE;
5387 else if (frp->fr_layout == FR_ROW)
5389 for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
5390 win_redraw_last_status(frp);
5392 else /* frp->fr_layout == FR_COL */
5394 frp = frp->fr_child;
5395 while (frp->fr_next != NULL)
5396 frp = frp->fr_next;
5397 win_redraw_last_status(frp);
5400 #endif
5402 #ifdef FEAT_VERTSPLIT
5404 * Draw the verticap separator right of window "wp" starting with line "row".
5406 static void
5407 draw_vsep_win(wp, row)
5408 win_T *wp;
5409 int row;
5411 int hl;
5412 int c;
5414 if (wp->w_vsep_width)
5416 /* draw the vertical separator right of this window */
5417 c = fillchar_vsep(&hl);
5418 screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + wp->w_height,
5419 W_ENDCOL(wp), W_ENDCOL(wp) + 1,
5420 c, ' ', hl);
5423 #endif
5425 #ifdef FEAT_WILDMENU
5426 static int status_match_len __ARGS((expand_T *xp, char_u *s));
5427 static int skip_status_match_char __ARGS((expand_T *xp, char_u *s));
5430 * Get the length of an item as it will be shown in the status line.
5432 static int
5433 status_match_len(xp, s)
5434 expand_T *xp;
5435 char_u *s;
5437 int len = 0;
5439 #ifdef FEAT_MENU
5440 int emenu = (xp->xp_context == EXPAND_MENUS
5441 || xp->xp_context == EXPAND_MENUNAMES);
5443 /* Check for menu separators - replace with '|'. */
5444 if (emenu && menu_is_separator(s))
5445 return 1;
5446 #endif
5448 while (*s != NUL)
5450 s += skip_status_match_char(xp, s);
5451 len += ptr2cells(s);
5452 mb_ptr_adv(s);
5455 return len;
5459 * Return the number of characters that should be skipped in a status match.
5460 * These are backslashes used for escaping. Do show backslashes in help tags.
5462 static int
5463 skip_status_match_char(xp, s)
5464 expand_T *xp;
5465 char_u *s;
5467 if ((rem_backslash(s) && xp->xp_context != EXPAND_HELP)
5468 #ifdef FEAT_MENU
5469 || ((xp->xp_context == EXPAND_MENUS
5470 || xp->xp_context == EXPAND_MENUNAMES)
5471 && (s[0] == '\t' || (s[0] == '\\' && s[1] != NUL)))
5472 #endif
5475 #ifndef BACKSLASH_IN_FILENAME
5476 if (xp->xp_shell && csh_like_shell() && s[1] == '\\' && s[2] == '!')
5477 return 2;
5478 #endif
5479 return 1;
5481 return 0;
5485 * Show wildchar matches in the status line.
5486 * Show at least the "match" item.
5487 * We start at item 'first_match' in the list and show all matches that fit.
5489 * If inversion is possible we use it. Else '=' characters are used.
5491 void
5492 win_redr_status_matches(xp, num_matches, matches, match, showtail)
5493 expand_T *xp;
5494 int num_matches;
5495 char_u **matches; /* list of matches */
5496 int match;
5497 int showtail;
5499 #define L_MATCH(m) (showtail ? sm_gettail(matches[m]) : matches[m])
5500 int row;
5501 char_u *buf;
5502 int len;
5503 int clen; /* length in screen cells */
5504 int fillchar;
5505 int attr;
5506 int i;
5507 int highlight = TRUE;
5508 char_u *selstart = NULL;
5509 int selstart_col = 0;
5510 char_u *selend = NULL;
5511 static int first_match = 0;
5512 int add_left = FALSE;
5513 char_u *s;
5514 #ifdef FEAT_MENU
5515 int emenu;
5516 #endif
5517 #if defined(FEAT_MBYTE) || defined(FEAT_MENU)
5518 int l;
5519 #endif
5521 if (matches == NULL) /* interrupted completion? */
5522 return;
5524 #ifdef FEAT_MBYTE
5525 if (has_mbyte)
5526 buf = alloc((unsigned)Columns * MB_MAXBYTES + 1);
5527 else
5528 #endif
5529 buf = alloc((unsigned)Columns + 1);
5530 if (buf == NULL)
5531 return;
5533 if (match == -1) /* don't show match but original text */
5535 match = 0;
5536 highlight = FALSE;
5538 /* count 1 for the ending ">" */
5539 clen = status_match_len(xp, L_MATCH(match)) + 3;
5540 if (match == 0)
5541 first_match = 0;
5542 else if (match < first_match)
5544 /* jumping left, as far as we can go */
5545 first_match = match;
5546 add_left = TRUE;
5548 else
5550 /* check if match fits on the screen */
5551 for (i = first_match; i < match; ++i)
5552 clen += status_match_len(xp, L_MATCH(i)) + 2;
5553 if (first_match > 0)
5554 clen += 2;
5555 /* jumping right, put match at the left */
5556 if ((long)clen > Columns)
5558 first_match = match;
5559 /* if showing the last match, we can add some on the left */
5560 clen = 2;
5561 for (i = match; i < num_matches; ++i)
5563 clen += status_match_len(xp, L_MATCH(i)) + 2;
5564 if ((long)clen >= Columns)
5565 break;
5567 if (i == num_matches)
5568 add_left = TRUE;
5571 if (add_left)
5572 while (first_match > 0)
5574 clen += status_match_len(xp, L_MATCH(first_match - 1)) + 2;
5575 if ((long)clen >= Columns)
5576 break;
5577 --first_match;
5580 fillchar = fillchar_status(&attr, TRUE);
5582 if (first_match == 0)
5584 *buf = NUL;
5585 len = 0;
5587 else
5589 STRCPY(buf, "< ");
5590 len = 2;
5592 clen = len;
5594 i = first_match;
5595 while ((long)(clen + status_match_len(xp, L_MATCH(i)) + 2) < Columns)
5597 if (i == match)
5599 selstart = buf + len;
5600 selstart_col = clen;
5603 s = L_MATCH(i);
5604 /* Check for menu separators - replace with '|' */
5605 #ifdef FEAT_MENU
5606 emenu = (xp->xp_context == EXPAND_MENUS
5607 || xp->xp_context == EXPAND_MENUNAMES);
5608 if (emenu && menu_is_separator(s))
5610 STRCPY(buf + len, transchar('|'));
5611 l = (int)STRLEN(buf + len);
5612 len += l;
5613 clen += l;
5615 else
5616 #endif
5617 for ( ; *s != NUL; ++s)
5619 s += skip_status_match_char(xp, s);
5620 clen += ptr2cells(s);
5621 #ifdef FEAT_MBYTE
5622 if (has_mbyte && (l = (*mb_ptr2len)(s)) > 1)
5624 STRNCPY(buf + len, s, l);
5625 s += l - 1;
5626 len += l;
5628 else
5629 #endif
5631 STRCPY(buf + len, transchar_byte(*s));
5632 len += (int)STRLEN(buf + len);
5635 if (i == match)
5636 selend = buf + len;
5638 *(buf + len++) = ' ';
5639 *(buf + len++) = ' ';
5640 clen += 2;
5641 if (++i == num_matches)
5642 break;
5645 if (i != num_matches)
5647 *(buf + len++) = '>';
5648 ++clen;
5651 buf[len] = NUL;
5653 row = cmdline_row - 1;
5654 if (row >= 0)
5656 if (wild_menu_showing == 0)
5658 if (msg_scrolled > 0)
5660 /* Put the wildmenu just above the command line. If there is
5661 * no room, scroll the screen one line up. */
5662 if (cmdline_row == Rows - 1)
5664 screen_del_lines(0, 0, 1, (int)Rows, TRUE, NULL);
5665 ++msg_scrolled;
5667 else
5669 ++cmdline_row;
5670 ++row;
5672 wild_menu_showing = WM_SCROLLED;
5674 else
5676 /* Create status line if needed by setting 'laststatus' to 2.
5677 * Set 'winminheight' to zero to avoid that the window is
5678 * resized. */
5679 if (lastwin->w_status_height == 0)
5681 save_p_ls = p_ls;
5682 save_p_wmh = p_wmh;
5683 p_ls = 2;
5684 p_wmh = 0;
5685 last_status(FALSE);
5687 wild_menu_showing = WM_SHOWN;
5691 screen_puts(buf, row, 0, attr);
5692 if (selstart != NULL && highlight)
5694 *selend = NUL;
5695 screen_puts(selstart, row, selstart_col, hl_attr(HLF_WM));
5698 screen_fill(row, row + 1, clen, (int)Columns, fillchar, fillchar, attr);
5701 #ifdef FEAT_VERTSPLIT
5702 win_redraw_last_status(topframe);
5703 #else
5704 lastwin->w_redr_status = TRUE;
5705 #endif
5706 vim_free(buf);
5708 #endif
5710 #if defined(FEAT_WINDOWS) || defined(PROTO)
5712 * Redraw the status line of window wp.
5714 * If inversion is possible we use it. Else '=' characters are used.
5716 void
5717 win_redr_status(wp)
5718 win_T *wp;
5720 int row;
5721 char_u *p;
5722 int len;
5723 int fillchar;
5724 int attr;
5725 int this_ru_col;
5727 wp->w_redr_status = FALSE;
5728 if (wp->w_status_height == 0)
5730 /* no status line, can only be last window */
5731 redraw_cmdline = TRUE;
5733 else if (!redrawing()
5734 #ifdef FEAT_INS_EXPAND
5735 /* don't update status line when popup menu is visible and may be
5736 * drawn over it */
5737 || pum_visible()
5738 #endif
5741 /* Don't redraw right now, do it later. */
5742 wp->w_redr_status = TRUE;
5744 #ifdef FEAT_STL_OPT
5745 else if (*p_stl != NUL || *wp->w_p_stl != NUL)
5747 /* redraw custom status line */
5748 redraw_custum_statusline(wp);
5750 #endif
5751 else
5753 fillchar = fillchar_status(&attr, wp == curwin);
5755 get_trans_bufname(wp->w_buffer);
5756 p = NameBuff;
5757 len = (int)STRLEN(p);
5759 if (wp->w_buffer->b_help
5760 #ifdef FEAT_QUICKFIX
5761 || wp->w_p_pvw
5762 #endif
5763 || bufIsChanged(wp->w_buffer)
5764 || wp->w_buffer->b_p_ro)
5765 *(p + len++) = ' ';
5766 if (wp->w_buffer->b_help)
5768 STRCPY(p + len, _("[Help]"));
5769 len += (int)STRLEN(p + len);
5771 #ifdef FEAT_QUICKFIX
5772 if (wp->w_p_pvw)
5774 STRCPY(p + len, _("[Preview]"));
5775 len += (int)STRLEN(p + len);
5777 #endif
5778 if (bufIsChanged(wp->w_buffer))
5780 STRCPY(p + len, "[+]");
5781 len += 3;
5783 if (wp->w_buffer->b_p_ro)
5785 STRCPY(p + len, "[RO]");
5786 len += 4;
5789 #ifndef FEAT_VERTSPLIT
5790 this_ru_col = ru_col;
5791 if (this_ru_col < (Columns + 1) / 2)
5792 this_ru_col = (Columns + 1) / 2;
5793 #else
5794 this_ru_col = ru_col - (Columns - W_WIDTH(wp));
5795 if (this_ru_col < (W_WIDTH(wp) + 1) / 2)
5796 this_ru_col = (W_WIDTH(wp) + 1) / 2;
5797 if (this_ru_col <= 1)
5799 p = (char_u *)"<"; /* No room for file name! */
5800 len = 1;
5802 else
5803 #endif
5804 #ifdef FEAT_MBYTE
5805 if (has_mbyte)
5807 int clen = 0, i;
5809 /* Count total number of display cells. */
5810 for (i = 0; p[i] != NUL; i += (*mb_ptr2len)(p + i))
5811 clen += (*mb_ptr2cells)(p + i);
5812 /* Find first character that will fit.
5813 * Going from start to end is much faster for DBCS. */
5814 for (i = 0; p[i] != NUL && clen >= this_ru_col - 1;
5815 i += (*mb_ptr2len)(p + i))
5816 clen -= (*mb_ptr2cells)(p + i);
5817 len = clen;
5818 if (i > 0)
5820 p = p + i - 1;
5821 *p = '<';
5822 ++len;
5826 else
5827 #endif
5828 if (len > this_ru_col - 1)
5830 p += len - (this_ru_col - 1);
5831 *p = '<';
5832 len = this_ru_col - 1;
5835 row = W_WINROW(wp) + wp->w_height;
5836 screen_puts(p, row, W_WINCOL(wp), attr);
5837 screen_fill(row, row + 1, len + W_WINCOL(wp),
5838 this_ru_col + W_WINCOL(wp), fillchar, fillchar, attr);
5840 if (get_keymap_str(wp, NameBuff, MAXPATHL)
5841 && (int)(this_ru_col - len) > (int)(STRLEN(NameBuff) + 1))
5842 screen_puts(NameBuff, row, (int)(this_ru_col - STRLEN(NameBuff)
5843 - 1 + W_WINCOL(wp)), attr);
5845 #ifdef FEAT_CMDL_INFO
5846 win_redr_ruler(wp, TRUE);
5847 #endif
5850 #ifdef FEAT_VERTSPLIT
5852 * May need to draw the character below the vertical separator.
5854 if (wp->w_vsep_width != 0 && wp->w_status_height != 0 && redrawing())
5856 if (stl_connected(wp))
5857 fillchar = fillchar_status(&attr, wp == curwin);
5858 else
5859 fillchar = fillchar_vsep(&attr);
5860 screen_putchar(fillchar, W_WINROW(wp) + wp->w_height, W_ENDCOL(wp),
5861 attr);
5863 #endif
5866 #ifdef FEAT_STL_OPT
5868 * Redraw the status line according to 'statusline' and take care of any
5869 * errors encountered.
5871 static void
5872 redraw_custum_statusline(wp)
5873 win_T *wp;
5875 int save_called_emsg = called_emsg;
5877 called_emsg = FALSE;
5878 win_redr_custom(wp, FALSE);
5879 if (called_emsg)
5880 set_string_option_direct((char_u *)"statusline", -1,
5881 (char_u *)"", OPT_FREE | (*wp->w_p_stl != NUL
5882 ? OPT_LOCAL : OPT_GLOBAL), SID_ERROR);
5883 called_emsg |= save_called_emsg;
5885 #endif
5887 # ifdef FEAT_VERTSPLIT
5889 * Return TRUE if the status line of window "wp" is connected to the status
5890 * line of the window right of it. If not, then it's a vertical separator.
5891 * Only call if (wp->w_vsep_width != 0).
5894 stl_connected(wp)
5895 win_T *wp;
5897 frame_T *fr;
5899 fr = wp->w_frame;
5900 while (fr->fr_parent != NULL)
5902 if (fr->fr_parent->fr_layout == FR_COL)
5904 if (fr->fr_next != NULL)
5905 break;
5907 else
5909 if (fr->fr_next != NULL)
5910 return TRUE;
5912 fr = fr->fr_parent;
5914 return FALSE;
5916 # endif
5918 #endif /* FEAT_WINDOWS */
5920 #if defined(FEAT_WINDOWS) || defined(FEAT_STL_OPT) || defined(PROTO)
5922 * Get the value to show for the language mappings, active 'keymap'.
5925 get_keymap_str(wp, buf, len)
5926 win_T *wp;
5927 char_u *buf; /* buffer for the result */
5928 int len; /* length of buffer */
5930 char_u *p;
5932 if (wp->w_buffer->b_p_iminsert != B_IMODE_LMAP)
5933 return FALSE;
5936 #ifdef FEAT_EVAL
5937 buf_T *old_curbuf = curbuf;
5938 win_T *old_curwin = curwin;
5939 char_u *s;
5941 curbuf = wp->w_buffer;
5942 curwin = wp;
5943 STRCPY(buf, "b:keymap_name"); /* must be writable */
5944 ++emsg_skip;
5945 s = p = eval_to_string(buf, NULL, FALSE);
5946 --emsg_skip;
5947 curbuf = old_curbuf;
5948 curwin = old_curwin;
5949 if (p == NULL || *p == NUL)
5950 #endif
5952 #ifdef FEAT_KEYMAP
5953 if (wp->w_buffer->b_kmap_state & KEYMAP_LOADED)
5954 p = wp->w_buffer->b_p_keymap;
5955 else
5956 #endif
5957 p = (char_u *)"lang";
5959 if ((int)(STRLEN(p) + 3) < len)
5960 sprintf((char *)buf, "<%s>", p);
5961 else
5962 buf[0] = NUL;
5963 #ifdef FEAT_EVAL
5964 vim_free(s);
5965 #endif
5967 return buf[0] != NUL;
5969 #endif
5971 #if defined(FEAT_STL_OPT) || defined(PROTO)
5973 * Redraw the status line or ruler of window "wp".
5974 * When "wp" is NULL redraw the tab pages line from 'tabline'.
5976 static void
5977 win_redr_custom(wp, draw_ruler)
5978 win_T *wp;
5979 int draw_ruler; /* TRUE or FALSE */
5981 int attr;
5982 int curattr;
5983 int row;
5984 int col = 0;
5985 int maxwidth;
5986 int width;
5987 int n;
5988 int len;
5989 int fillchar;
5990 char_u buf[MAXPATHL];
5991 char_u *p;
5992 struct stl_hlrec hltab[STL_MAX_ITEM];
5993 struct stl_hlrec tabtab[STL_MAX_ITEM];
5994 int use_sandbox = FALSE;
5996 /* setup environment for the task at hand */
5997 if (wp == NULL)
5999 /* Use 'tabline'. Always at the first line of the screen. */
6000 p = p_tal;
6001 row = 0;
6002 fillchar = ' ';
6003 attr = hl_attr(HLF_TPF);
6004 maxwidth = Columns;
6005 # ifdef FEAT_EVAL
6006 use_sandbox = was_set_insecurely((char_u *)"tabline", 0);
6007 # endif
6009 else
6011 row = W_WINROW(wp) + wp->w_height;
6012 fillchar = fillchar_status(&attr, wp == curwin);
6013 maxwidth = W_WIDTH(wp);
6015 if (draw_ruler)
6017 p = p_ruf;
6018 /* advance past any leading group spec - implicit in ru_col */
6019 if (*p == '%')
6021 if (*++p == '-')
6022 p++;
6023 if (atoi((char *) p))
6024 while (VIM_ISDIGIT(*p))
6025 p++;
6026 if (*p++ != '(')
6027 p = p_ruf;
6029 #ifdef FEAT_VERTSPLIT
6030 col = ru_col - (Columns - W_WIDTH(wp));
6031 if (col < (W_WIDTH(wp) + 1) / 2)
6032 col = (W_WIDTH(wp) + 1) / 2;
6033 #else
6034 col = ru_col;
6035 if (col > (Columns + 1) / 2)
6036 col = (Columns + 1) / 2;
6037 #endif
6038 maxwidth = W_WIDTH(wp) - col;
6039 #ifdef FEAT_WINDOWS
6040 if (!wp->w_status_height)
6041 #endif
6043 row = Rows - 1;
6044 --maxwidth; /* writing in last column may cause scrolling */
6045 fillchar = ' ';
6046 attr = 0;
6049 # ifdef FEAT_EVAL
6050 use_sandbox = was_set_insecurely((char_u *)"rulerformat", 0);
6051 # endif
6053 else
6055 if (*wp->w_p_stl != NUL)
6056 p = wp->w_p_stl;
6057 else
6058 p = p_stl;
6059 # ifdef FEAT_EVAL
6060 use_sandbox = was_set_insecurely((char_u *)"statusline",
6061 *wp->w_p_stl == NUL ? 0 : OPT_LOCAL);
6062 # endif
6065 #ifdef FEAT_VERTSPLIT
6066 col += W_WINCOL(wp);
6067 #endif
6070 if (maxwidth <= 0)
6071 return;
6073 width = build_stl_str_hl(wp == NULL ? curwin : wp,
6074 buf, sizeof(buf),
6075 p, use_sandbox,
6076 fillchar, maxwidth, hltab, tabtab);
6077 len = (int)STRLEN(buf);
6079 while (width < maxwidth && len < sizeof(buf) - 1)
6081 #ifdef FEAT_MBYTE
6082 len += (*mb_char2bytes)(fillchar, buf + len);
6083 #else
6084 buf[len++] = fillchar;
6085 #endif
6086 ++width;
6088 buf[len] = NUL;
6091 * Draw each snippet with the specified highlighting.
6093 curattr = attr;
6094 p = buf;
6095 for (n = 0; hltab[n].start != NULL; n++)
6097 len = (int)(hltab[n].start - p);
6098 screen_puts_len(p, len, row, col, curattr);
6099 col += vim_strnsize(p, len);
6100 p = hltab[n].start;
6102 if (hltab[n].userhl == 0)
6103 curattr = attr;
6104 else if (hltab[n].userhl < 0)
6105 curattr = syn_id2attr(-hltab[n].userhl);
6106 #ifdef FEAT_WINDOWS
6107 else if (wp != NULL && wp != curwin && wp->w_status_height != 0)
6108 curattr = highlight_stlnc[hltab[n].userhl - 1];
6109 #endif
6110 else
6111 curattr = highlight_user[hltab[n].userhl - 1];
6113 screen_puts(p, row, col, curattr);
6115 if (wp == NULL)
6117 /* Fill the TabPageIdxs[] array for clicking in the tab pagesline. */
6118 col = 0;
6119 len = 0;
6120 p = buf;
6121 fillchar = 0;
6122 for (n = 0; tabtab[n].start != NULL; n++)
6124 len += vim_strnsize(p, (int)(tabtab[n].start - p));
6125 while (col < len)
6126 TabPageIdxs[col++] = fillchar;
6127 p = tabtab[n].start;
6128 fillchar = tabtab[n].userhl;
6130 while (col < Columns)
6131 TabPageIdxs[col++] = fillchar;
6135 #endif /* FEAT_STL_OPT */
6138 * Output a single character directly to the screen and update ScreenLines.
6140 void
6141 screen_putchar(c, row, col, attr)
6142 int c;
6143 int row, col;
6144 int attr;
6146 #ifdef FEAT_MBYTE
6147 char_u buf[MB_MAXBYTES + 1];
6149 buf[(*mb_char2bytes)(c, buf)] = NUL;
6150 #else
6151 char_u buf[2];
6153 buf[0] = c;
6154 buf[1] = NUL;
6155 #endif
6156 screen_puts(buf, row, col, attr);
6160 * Get a single character directly from ScreenLines into "bytes[]".
6161 * Also return its attribute in *attrp;
6163 void
6164 screen_getbytes(row, col, bytes, attrp)
6165 int row, col;
6166 char_u *bytes;
6167 int *attrp;
6169 unsigned off;
6171 /* safety check */
6172 if (ScreenLines != NULL && row < screen_Rows && col < screen_Columns)
6174 off = LineOffset[row] + col;
6175 *attrp = ScreenAttrs[off];
6176 bytes[0] = ScreenLines[off];
6177 bytes[1] = NUL;
6179 #ifdef FEAT_MBYTE
6180 if (enc_utf8 && ScreenLinesUC[off] != 0)
6181 bytes[utfc_char2bytes(off, bytes)] = NUL;
6182 else if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e)
6184 bytes[0] = ScreenLines[off];
6185 bytes[1] = ScreenLines2[off];
6186 bytes[2] = NUL;
6188 else if (enc_dbcs && MB_BYTE2LEN(bytes[0]) > 1)
6190 bytes[1] = ScreenLines[off + 1];
6191 bytes[2] = NUL;
6193 #endif
6197 #ifdef FEAT_MBYTE
6198 static int screen_comp_differs __ARGS((int, int*));
6201 * Return TRUE if composing characters for screen posn "off" differs from
6202 * composing characters in "u8cc".
6204 static int
6205 screen_comp_differs(off, u8cc)
6206 int off;
6207 int *u8cc;
6209 int i;
6211 for (i = 0; i < Screen_mco; ++i)
6213 if (ScreenLinesC[i][off] != (u8char_T)u8cc[i])
6214 return TRUE;
6215 if (u8cc[i] == 0)
6216 break;
6218 return FALSE;
6220 #endif
6223 * Put string '*text' on the screen at position 'row' and 'col', with
6224 * attributes 'attr', and update ScreenLines[] and ScreenAttrs[].
6225 * Note: only outputs within one row, message is truncated at screen boundary!
6226 * Note: if ScreenLines[], row and/or col is invalid, nothing is done.
6228 void
6229 screen_puts(text, row, col, attr)
6230 char_u *text;
6231 int row;
6232 int col;
6233 int attr;
6235 screen_puts_len(text, -1, row, col, attr);
6239 * Like screen_puts(), but output "text[len]". When "len" is -1 output up to
6240 * a NUL.
6242 void
6243 screen_puts_len(text, len, row, col, attr)
6244 char_u *text;
6245 int len;
6246 int row;
6247 int col;
6248 int attr;
6250 unsigned off;
6251 char_u *ptr = text;
6252 int c;
6253 #ifdef FEAT_MBYTE
6254 unsigned max_off;
6255 int mbyte_blen = 1;
6256 int mbyte_cells = 1;
6257 int u8c = 0;
6258 int u8cc[MAX_MCO];
6259 int clear_next_cell = FALSE;
6260 # ifdef FEAT_ARABIC
6261 int prev_c = 0; /* previous Arabic character */
6262 int pc, nc, nc1;
6263 int pcc[MAX_MCO];
6264 # endif
6265 #endif
6267 if (ScreenLines == NULL || row >= screen_Rows) /* safety check */
6268 return;
6270 #ifdef FEAT_MBYTE
6271 /* When drawing over the right halve of a double-wide char clear out the
6272 * left halve. Only needed in a terminal. */
6273 if (has_mbyte && col > 0 && col < screen_Columns
6274 # ifdef FEAT_GUI
6275 && !gui.in_use
6276 # endif
6277 && mb_fix_col(col, row) != col)
6278 screen_puts_len((char_u *)" ", 1, row, col - 1, 0);
6279 #endif
6281 off = LineOffset[row] + col;
6282 #ifdef FEAT_MBYTE
6283 max_off = LineOffset[row] + screen_Columns;
6284 #endif
6285 while (col < screen_Columns
6286 && (len < 0 || (int)(ptr - text) < len)
6287 && *ptr != NUL)
6289 c = *ptr;
6290 #ifdef FEAT_MBYTE
6291 /* check if this is the first byte of a multibyte */
6292 if (has_mbyte)
6294 if (enc_utf8 && len > 0)
6295 mbyte_blen = utfc_ptr2len_len(ptr, (int)((text + len) - ptr));
6296 else
6297 mbyte_blen = (*mb_ptr2len)(ptr);
6298 if (enc_dbcs == DBCS_JPNU && c == 0x8e)
6299 mbyte_cells = 1;
6300 else if (enc_dbcs != 0)
6301 mbyte_cells = mbyte_blen;
6302 else /* enc_utf8 */
6304 if (len >= 0)
6305 u8c = utfc_ptr2char_len(ptr, u8cc,
6306 (int)((text + len) - ptr));
6307 else
6308 u8c = utfc_ptr2char(ptr, u8cc);
6309 mbyte_cells = utf_char2cells(u8c);
6310 # ifdef UNICODE16
6311 /* Non-BMP character: display as ? or fullwidth ?. */
6312 if (u8c >= 0x10000)
6314 u8c = (mbyte_cells == 2) ? 0xff1f : (int)'?';
6315 if (attr == 0)
6316 attr = hl_attr(HLF_8);
6318 # endif
6319 # ifdef FEAT_ARABIC
6320 if (p_arshape && !p_tbidi && ARABIC_CHAR(u8c))
6322 /* Do Arabic shaping. */
6323 if (len >= 0 && (int)(ptr - text) + mbyte_blen >= len)
6325 /* Past end of string to be displayed. */
6326 nc = NUL;
6327 nc1 = NUL;
6329 else
6331 nc = utfc_ptr2char(ptr + mbyte_blen, pcc);
6332 nc1 = pcc[0];
6334 pc = prev_c;
6335 prev_c = u8c;
6336 u8c = arabic_shape(u8c, &c, &u8cc[0], nc, nc1, pc);
6338 else
6339 prev_c = u8c;
6340 # endif
6343 #endif
6345 if (ScreenLines[off] != c
6346 #ifdef FEAT_MBYTE
6347 || (mbyte_cells == 2
6348 && ScreenLines[off + 1] != (enc_dbcs ? ptr[1] : 0))
6349 || (enc_dbcs == DBCS_JPNU
6350 && c == 0x8e
6351 && ScreenLines2[off] != ptr[1])
6352 || (enc_utf8
6353 && (ScreenLinesUC[off] != (u8char_T)u8c
6354 || screen_comp_differs(off, u8cc)))
6355 #endif
6356 || ScreenAttrs[off] != attr
6357 || exmode_active
6360 #if defined(FEAT_GUI) || defined(UNIX)
6361 /* The bold trick makes a single row of pixels appear in the next
6362 * character. When a bold character is removed, the next
6363 * character should be redrawn too. This happens for our own GUI
6364 * and for some xterms.
6365 * Force the redraw by setting the attribute to a different value
6366 * than "attr", the contents of ScreenLines[] may be needed by
6367 * mb_off2cells() further on.
6368 * Don't do this for the last drawn character, because the next
6369 * character may not be redrawn. */
6370 if (
6371 # ifdef FEAT_GUI
6372 gui.in_use
6373 # endif
6374 # if defined(FEAT_GUI) && defined(UNIX)
6376 # endif
6377 # ifdef UNIX
6378 term_is_xterm
6379 # endif
6382 int n;
6384 n = ScreenAttrs[off];
6385 # ifdef FEAT_MBYTE
6386 if (col + mbyte_cells < screen_Columns
6387 && (n > HL_ALL || (n & HL_BOLD))
6388 && (len < 0 ? ptr[mbyte_blen] != NUL
6389 : ptr + mbyte_blen < text + len))
6390 ScreenAttrs[off + mbyte_cells] = attr + 1;
6391 # else
6392 if (col + 1 < screen_Columns
6393 && (n > HL_ALL || (n & HL_BOLD))
6394 && (len < 0 ? ptr[1] != NUL : ptr + 1 < text + len))
6395 ScreenLines[off + 1] = 0;
6396 # endif
6398 #endif
6399 #ifdef FEAT_MBYTE
6400 /* When at the end of the text and overwriting a two-cell
6401 * character with a one-cell character, need to clear the next
6402 * cell. Also when overwriting the left halve of a two-cell char
6403 * with the right halve of a two-cell char. Do this only once
6404 * (mb_off2cells() may return 2 on the right halve). */
6405 if (clear_next_cell)
6406 clear_next_cell = FALSE;
6407 else if (has_mbyte
6408 && (len < 0 ? ptr[mbyte_blen] == NUL
6409 : ptr + mbyte_blen >= text + len)
6410 && ((mbyte_cells == 1 && (*mb_off2cells)(off, max_off) > 1)
6411 || (mbyte_cells == 2
6412 && (*mb_off2cells)(off, max_off) == 1
6413 && (*mb_off2cells)(off + 1, max_off) > 1)))
6414 clear_next_cell = TRUE;
6416 /* Make sure we never leave a second byte of a double-byte behind,
6417 * it confuses mb_off2cells(). */
6418 if (enc_dbcs
6419 && ((mbyte_cells == 1 && (*mb_off2cells)(off, max_off) > 1)
6420 || (mbyte_cells == 2
6421 && (*mb_off2cells)(off, max_off) == 1
6422 && (*mb_off2cells)(off + 1, max_off) > 1)))
6423 ScreenLines[off + mbyte_blen] = 0;
6424 #endif
6425 ScreenLines[off] = c;
6426 ScreenAttrs[off] = attr;
6427 #ifdef FEAT_MBYTE
6428 if (enc_utf8)
6430 if (c < 0x80 && u8cc[0] == 0)
6431 ScreenLinesUC[off] = 0;
6432 else
6434 int i;
6436 ScreenLinesUC[off] = u8c;
6437 for (i = 0; i < Screen_mco; ++i)
6439 ScreenLinesC[i][off] = u8cc[i];
6440 if (u8cc[i] == 0)
6441 break;
6444 if (mbyte_cells == 2)
6446 ScreenLines[off + 1] = 0;
6447 ScreenAttrs[off + 1] = attr;
6449 screen_char(off, row, col);
6451 else if (mbyte_cells == 2)
6453 ScreenLines[off + 1] = ptr[1];
6454 ScreenAttrs[off + 1] = attr;
6455 screen_char_2(off, row, col);
6457 else if (enc_dbcs == DBCS_JPNU && c == 0x8e)
6459 ScreenLines2[off] = ptr[1];
6460 screen_char(off, row, col);
6462 else
6463 #endif
6464 screen_char(off, row, col);
6466 #ifdef FEAT_MBYTE
6467 if (has_mbyte)
6469 off += mbyte_cells;
6470 col += mbyte_cells;
6471 ptr += mbyte_blen;
6472 if (clear_next_cell)
6473 ptr = (char_u *)" ";
6475 else
6476 #endif
6478 ++off;
6479 ++col;
6480 ++ptr;
6485 #ifdef FEAT_SEARCH_EXTRA
6487 * Prepare for 'hlsearch' highlighting.
6489 static void
6490 start_search_hl()
6492 if (p_hls && !no_hlsearch)
6494 last_pat_prog(&search_hl.rm);
6495 search_hl.attr = hl_attr(HLF_L);
6496 # ifdef FEAT_RELTIME
6497 /* Set the time limit to 'redrawtime'. */
6498 profile_setlimit(p_rdt, &search_hl.tm);
6499 # endif
6504 * Clean up for 'hlsearch' highlighting.
6506 static void
6507 end_search_hl()
6509 if (search_hl.rm.regprog != NULL)
6511 vim_free(search_hl.rm.regprog);
6512 search_hl.rm.regprog = NULL;
6517 * Advance to the match in window "wp" line "lnum" or past it.
6519 static void
6520 prepare_search_hl(wp, lnum)
6521 win_T *wp;
6522 linenr_T lnum;
6524 matchitem_T *cur; /* points to the match list */
6525 match_T *shl; /* points to search_hl or a match */
6526 int shl_flag; /* flag to indicate whether search_hl
6527 has been processed or not */
6528 int n;
6531 * When using a multi-line pattern, start searching at the top
6532 * of the window or just after a closed fold.
6533 * Do this both for search_hl and the match list.
6535 cur = wp->w_match_head;
6536 shl_flag = FALSE;
6537 while (cur != NULL || shl_flag == FALSE)
6539 if (shl_flag == FALSE)
6541 shl = &search_hl;
6542 shl_flag = TRUE;
6544 else
6545 shl = &cur->hl;
6546 if (shl->rm.regprog != NULL
6547 && shl->lnum == 0
6548 && re_multiline(shl->rm.regprog))
6550 if (shl->first_lnum == 0)
6552 # ifdef FEAT_FOLDING
6553 for (shl->first_lnum = lnum;
6554 shl->first_lnum > wp->w_topline; --shl->first_lnum)
6555 if (hasFoldingWin(wp, shl->first_lnum - 1,
6556 NULL, NULL, TRUE, NULL))
6557 break;
6558 # else
6559 shl->first_lnum = wp->w_topline;
6560 # endif
6562 n = 0;
6563 while (shl->first_lnum < lnum && shl->rm.regprog != NULL)
6565 next_search_hl(wp, shl, shl->first_lnum, (colnr_T)n);
6566 if (shl->lnum != 0)
6568 shl->first_lnum = shl->lnum
6569 + shl->rm.endpos[0].lnum
6570 - shl->rm.startpos[0].lnum;
6571 n = shl->rm.endpos[0].col;
6573 else
6575 ++shl->first_lnum;
6576 n = 0;
6580 if (shl != &search_hl && cur != NULL)
6581 cur = cur->next;
6586 * Search for a next 'hlsearch' or match.
6587 * Uses shl->buf.
6588 * Sets shl->lnum and shl->rm contents.
6589 * Note: Assumes a previous match is always before "lnum", unless
6590 * shl->lnum is zero.
6591 * Careful: Any pointers for buffer lines will become invalid.
6593 static void
6594 next_search_hl(win, shl, lnum, mincol)
6595 win_T *win;
6596 match_T *shl; /* points to search_hl or a match */
6597 linenr_T lnum;
6598 colnr_T mincol; /* minimal column for a match */
6600 linenr_T l;
6601 colnr_T matchcol;
6602 long nmatched;
6604 if (shl->lnum != 0)
6606 /* Check for three situations:
6607 * 1. If the "lnum" is below a previous match, start a new search.
6608 * 2. If the previous match includes "mincol", use it.
6609 * 3. Continue after the previous match.
6611 l = shl->lnum + shl->rm.endpos[0].lnum - shl->rm.startpos[0].lnum;
6612 if (lnum > l)
6613 shl->lnum = 0;
6614 else if (lnum < l || shl->rm.endpos[0].col > mincol)
6615 return;
6619 * Repeat searching for a match until one is found that includes "mincol"
6620 * or none is found in this line.
6622 called_emsg = FALSE;
6623 for (;;)
6625 #ifdef FEAT_RELTIME
6626 /* Stop searching after passing the time limit. */
6627 if (profile_passed_limit(&(shl->tm)))
6629 shl->lnum = 0; /* no match found in time */
6630 break;
6632 #endif
6633 /* Three situations:
6634 * 1. No useful previous match: search from start of line.
6635 * 2. Not Vi compatible or empty match: continue at next character.
6636 * Break the loop if this is beyond the end of the line.
6637 * 3. Vi compatible searching: continue at end of previous match.
6639 if (shl->lnum == 0)
6640 matchcol = 0;
6641 else if (vim_strchr(p_cpo, CPO_SEARCH) == NULL
6642 || (shl->rm.endpos[0].lnum == 0
6643 && shl->rm.endpos[0].col <= shl->rm.startpos[0].col))
6645 char_u *ml;
6647 matchcol = shl->rm.startpos[0].col;
6648 ml = ml_get_buf(shl->buf, lnum, FALSE) + matchcol;
6649 if (*ml == NUL)
6651 ++matchcol;
6652 shl->lnum = 0;
6653 break;
6655 #ifdef FEAT_MBYTE
6656 if (has_mbyte)
6657 matchcol += mb_ptr2len(ml);
6658 else
6659 #endif
6660 ++matchcol;
6662 else
6663 matchcol = shl->rm.endpos[0].col;
6665 shl->lnum = lnum;
6666 nmatched = vim_regexec_multi(&shl->rm, win, shl->buf, lnum, matchcol,
6667 #ifdef FEAT_RELTIME
6668 &(shl->tm)
6669 #else
6670 NULL
6671 #endif
6673 if (called_emsg)
6675 /* Error while handling regexp: stop using this regexp. */
6676 if (shl == &search_hl)
6678 /* don't free regprog in the match list, it's a copy */
6679 vim_free(shl->rm.regprog);
6680 no_hlsearch = TRUE;
6682 shl->rm.regprog = NULL;
6683 shl->lnum = 0;
6684 got_int = FALSE; /* avoid the "Type :quit to exit Vim" message */
6685 break;
6687 if (nmatched == 0)
6689 shl->lnum = 0; /* no match found */
6690 break;
6692 if (shl->rm.startpos[0].lnum > 0
6693 || shl->rm.startpos[0].col >= mincol
6694 || nmatched > 1
6695 || shl->rm.endpos[0].col > mincol)
6697 shl->lnum += shl->rm.startpos[0].lnum;
6698 break; /* useful match found */
6702 #endif
6704 static void
6705 screen_start_highlight(attr)
6706 int attr;
6708 attrentry_T *aep = NULL;
6710 screen_attr = attr;
6711 if (full_screen
6712 #ifdef WIN3264
6713 && termcap_active
6714 #endif
6717 #ifdef FEAT_GUI
6718 if (gui.in_use)
6720 char buf[20];
6722 /* The GUI handles this internally. */
6723 sprintf(buf, IF_EB("\033|%dh", ESC_STR "|%dh"), attr);
6724 OUT_STR(buf);
6726 else
6727 #endif
6729 if (attr > HL_ALL) /* special HL attr. */
6731 if (t_colors > 1)
6732 aep = syn_cterm_attr2entry(attr);
6733 else
6734 aep = syn_term_attr2entry(attr);
6735 if (aep == NULL) /* did ":syntax clear" */
6736 attr = 0;
6737 else
6738 attr = aep->ae_attr;
6740 if ((attr & HL_BOLD) && T_MD != NULL) /* bold */
6741 out_str(T_MD);
6742 else if (aep != NULL && t_colors > 1 && aep->ae_u.cterm.fg_color
6743 && cterm_normal_fg_bold)
6744 /* If the Normal FG color has BOLD attribute and the new HL
6745 * has a FG color defined, clear BOLD. */
6746 out_str(T_ME);
6747 if ((attr & HL_STANDOUT) && T_SO != NULL) /* standout */
6748 out_str(T_SO);
6749 if ((attr & (HL_UNDERLINE | HL_UNDERCURL)) && T_US != NULL)
6750 /* underline or undercurl */
6751 out_str(T_US);
6752 if ((attr & HL_ITALIC) && T_CZH != NULL) /* italic */
6753 out_str(T_CZH);
6754 if ((attr & HL_INVERSE) && T_MR != NULL) /* inverse (reverse) */
6755 out_str(T_MR);
6758 * Output the color or start string after bold etc., in case the
6759 * bold etc. override the color setting.
6761 if (aep != NULL)
6763 if (t_colors > 1)
6765 if (aep->ae_u.cterm.fg_color)
6766 term_fg_color(aep->ae_u.cterm.fg_color - 1);
6767 if (aep->ae_u.cterm.bg_color)
6768 term_bg_color(aep->ae_u.cterm.bg_color - 1);
6770 else
6772 if (aep->ae_u.term.start != NULL)
6773 out_str(aep->ae_u.term.start);
6780 void
6781 screen_stop_highlight()
6783 int do_ME = FALSE; /* output T_ME code */
6785 if (screen_attr != 0
6786 #ifdef WIN3264
6787 && termcap_active
6788 #endif
6791 #ifdef FEAT_GUI
6792 if (gui.in_use)
6794 char buf[20];
6796 /* use internal GUI code */
6797 sprintf(buf, IF_EB("\033|%dH", ESC_STR "|%dH"), screen_attr);
6798 OUT_STR(buf);
6800 else
6801 #endif
6803 if (screen_attr > HL_ALL) /* special HL attr. */
6805 attrentry_T *aep;
6807 if (t_colors > 1)
6810 * Assume that t_me restores the original colors!
6812 aep = syn_cterm_attr2entry(screen_attr);
6813 if (aep != NULL && (aep->ae_u.cterm.fg_color
6814 || aep->ae_u.cterm.bg_color))
6815 do_ME = TRUE;
6817 else
6819 aep = syn_term_attr2entry(screen_attr);
6820 if (aep != NULL && aep->ae_u.term.stop != NULL)
6822 if (STRCMP(aep->ae_u.term.stop, T_ME) == 0)
6823 do_ME = TRUE;
6824 else
6825 out_str(aep->ae_u.term.stop);
6828 if (aep == NULL) /* did ":syntax clear" */
6829 screen_attr = 0;
6830 else
6831 screen_attr = aep->ae_attr;
6835 * Often all ending-codes are equal to T_ME. Avoid outputting the
6836 * same sequence several times.
6838 if (screen_attr & HL_STANDOUT)
6840 if (STRCMP(T_SE, T_ME) == 0)
6841 do_ME = TRUE;
6842 else
6843 out_str(T_SE);
6845 if (screen_attr & (HL_UNDERLINE | HL_UNDERCURL))
6847 if (STRCMP(T_UE, T_ME) == 0)
6848 do_ME = TRUE;
6849 else
6850 out_str(T_UE);
6852 if (screen_attr & HL_ITALIC)
6854 if (STRCMP(T_CZR, T_ME) == 0)
6855 do_ME = TRUE;
6856 else
6857 out_str(T_CZR);
6859 if (do_ME || (screen_attr & (HL_BOLD | HL_INVERSE)))
6860 out_str(T_ME);
6862 if (t_colors > 1)
6864 /* set Normal cterm colors */
6865 if (cterm_normal_fg_color != 0)
6866 term_fg_color(cterm_normal_fg_color - 1);
6867 if (cterm_normal_bg_color != 0)
6868 term_bg_color(cterm_normal_bg_color - 1);
6869 if (cterm_normal_fg_bold)
6870 out_str(T_MD);
6874 screen_attr = 0;
6878 * Reset the colors for a cterm. Used when leaving Vim.
6879 * The machine specific code may override this again.
6881 void
6882 reset_cterm_colors()
6884 if (t_colors > 1)
6886 /* set Normal cterm colors */
6887 if (cterm_normal_fg_color > 0 || cterm_normal_bg_color > 0)
6889 out_str(T_OP);
6890 screen_attr = -1;
6892 if (cterm_normal_fg_bold)
6894 out_str(T_ME);
6895 screen_attr = -1;
6901 * Put character ScreenLines["off"] on the screen at position "row" and "col",
6902 * using the attributes from ScreenAttrs["off"].
6904 static void
6905 screen_char(off, row, col)
6906 unsigned off;
6907 int row;
6908 int col;
6910 int attr;
6912 /* Check for illegal values, just in case (could happen just after
6913 * resizing). */
6914 if (row >= screen_Rows || col >= screen_Columns)
6915 return;
6917 /* Outputting the last character on the screen may scrollup the screen.
6918 * Don't to it! Mark the character invalid (update it when scrolled up) */
6919 if (row == screen_Rows - 1 && col == screen_Columns - 1
6920 #ifdef FEAT_RIGHTLEFT
6921 /* account for first command-line character in rightleft mode */
6922 && !cmdmsg_rl
6923 #endif
6926 ScreenAttrs[off] = (sattr_T)-1;
6927 return;
6931 * Stop highlighting first, so it's easier to move the cursor.
6933 #if defined(FEAT_CLIPBOARD) || defined(FEAT_VERTSPLIT)
6934 if (screen_char_attr != 0)
6935 attr = screen_char_attr;
6936 else
6937 #endif
6938 attr = ScreenAttrs[off];
6939 if (screen_attr != attr)
6940 screen_stop_highlight();
6942 windgoto(row, col);
6944 if (screen_attr != attr)
6945 screen_start_highlight(attr);
6947 #ifdef FEAT_MBYTE
6948 if (enc_utf8 && ScreenLinesUC[off] != 0)
6950 char_u buf[MB_MAXBYTES + 1];
6952 /* Convert UTF-8 character to bytes and write it. */
6954 buf[utfc_char2bytes(off, buf)] = NUL;
6956 out_str(buf);
6957 if (utf_char2cells(ScreenLinesUC[off]) > 1)
6958 ++screen_cur_col;
6960 else
6961 #endif
6963 #ifdef FEAT_MBYTE
6964 out_flush_check();
6965 #endif
6966 out_char(ScreenLines[off]);
6967 #ifdef FEAT_MBYTE
6968 /* double-byte character in single-width cell */
6969 if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e)
6970 out_char(ScreenLines2[off]);
6971 #endif
6974 screen_cur_col++;
6977 #ifdef FEAT_MBYTE
6980 * Used for enc_dbcs only: Put one double-wide character at ScreenLines["off"]
6981 * on the screen at position 'row' and 'col'.
6982 * The attributes of the first byte is used for all. This is required to
6983 * output the two bytes of a double-byte character with nothing in between.
6985 static void
6986 screen_char_2(off, row, col)
6987 unsigned off;
6988 int row;
6989 int col;
6991 /* Check for illegal values (could be wrong when screen was resized). */
6992 if (off + 1 >= (unsigned)(screen_Rows * screen_Columns))
6993 return;
6995 /* Outputting the last character on the screen may scrollup the screen.
6996 * Don't to it! Mark the character invalid (update it when scrolled up) */
6997 if (row == screen_Rows - 1 && col >= screen_Columns - 2)
6999 ScreenAttrs[off] = (sattr_T)-1;
7000 return;
7003 /* Output the first byte normally (positions the cursor), then write the
7004 * second byte directly. */
7005 screen_char(off, row, col);
7006 out_char(ScreenLines[off + 1]);
7007 ++screen_cur_col;
7009 #endif
7011 #if defined(FEAT_CLIPBOARD) || defined(FEAT_VERTSPLIT) || defined(PROTO)
7013 * Draw a rectangle of the screen, inverted when "invert" is TRUE.
7014 * This uses the contents of ScreenLines[] and doesn't change it.
7016 void
7017 screen_draw_rectangle(row, col, height, width, invert)
7018 int row;
7019 int col;
7020 int height;
7021 int width;
7022 int invert;
7024 int r, c;
7025 int off;
7026 #ifdef FEAT_MBYTE
7027 int max_off;
7028 #endif
7030 /* Can't use ScreenLines unless initialized */
7031 if (ScreenLines == NULL)
7032 return;
7034 if (invert)
7035 screen_char_attr = HL_INVERSE;
7036 for (r = row; r < row + height; ++r)
7038 off = LineOffset[r];
7039 #ifdef FEAT_MBYTE
7040 max_off = off + screen_Columns;
7041 #endif
7042 for (c = col; c < col + width; ++c)
7044 #ifdef FEAT_MBYTE
7045 if (enc_dbcs != 0 && dbcs_off2cells(off + c, max_off) > 1)
7047 screen_char_2(off + c, r, c);
7048 ++c;
7050 else
7051 #endif
7053 screen_char(off + c, r, c);
7054 #ifdef FEAT_MBYTE
7055 if (utf_off2cells(off + c, max_off) > 1)
7056 ++c;
7057 #endif
7061 screen_char_attr = 0;
7063 #endif
7065 #ifdef FEAT_VERTSPLIT
7067 * Redraw the characters for a vertically split window.
7069 static void
7070 redraw_block(row, end, wp)
7071 int row;
7072 int end;
7073 win_T *wp;
7075 int col;
7076 int width;
7078 # ifdef FEAT_CLIPBOARD
7079 clip_may_clear_selection(row, end - 1);
7080 # endif
7082 if (wp == NULL)
7084 col = 0;
7085 width = Columns;
7087 else
7089 col = wp->w_wincol;
7090 width = wp->w_width;
7092 screen_draw_rectangle(row, col, end - row, width, FALSE);
7094 #endif
7097 * Fill the screen from 'start_row' to 'end_row', from 'start_col' to 'end_col'
7098 * with character 'c1' in first column followed by 'c2' in the other columns.
7099 * Use attributes 'attr'.
7101 void
7102 screen_fill(start_row, end_row, start_col, end_col, c1, c2, attr)
7103 int start_row, end_row;
7104 int start_col, end_col;
7105 int c1, c2;
7106 int attr;
7108 int row;
7109 int col;
7110 int off;
7111 int end_off;
7112 int did_delete;
7113 int c;
7114 int norm_term;
7115 #if defined(FEAT_GUI) || defined(UNIX)
7116 int force_next = FALSE;
7117 #endif
7119 if (end_row > screen_Rows) /* safety check */
7120 end_row = screen_Rows;
7121 if (end_col > screen_Columns) /* safety check */
7122 end_col = screen_Columns;
7123 if (ScreenLines == NULL
7124 || start_row >= end_row
7125 || start_col >= end_col) /* nothing to do */
7126 return;
7128 /* it's a "normal" terminal when not in a GUI or cterm */
7129 norm_term = (
7130 #ifdef FEAT_GUI
7131 !gui.in_use &&
7132 #endif
7133 t_colors <= 1);
7134 for (row = start_row; row < end_row; ++row)
7136 #ifdef FEAT_MBYTE
7137 if (has_mbyte
7138 # ifdef FEAT_GUI
7139 && !gui.in_use
7140 # endif
7143 /* When drawing over the right halve of a double-wide char clear
7144 * out the left halve. When drawing over the left halve of a
7145 * double wide-char clear out the right halve. Only needed in a
7146 * terminal. */
7147 if (start_col > 0 && mb_fix_col(start_col, row) != start_col)
7148 screen_puts_len((char_u *)" ", 1, row, start_col - 1, 0);
7149 if (end_col < screen_Columns && mb_fix_col(end_col, row) != end_col)
7150 screen_puts_len((char_u *)" ", 1, row, end_col, 0);
7152 #endif
7154 * Try to use delete-line termcap code, when no attributes or in a
7155 * "normal" terminal, where a bold/italic space is just a
7156 * space.
7158 did_delete = FALSE;
7159 if (c2 == ' '
7160 && end_col == Columns
7161 && can_clear(T_CE)
7162 && (attr == 0
7163 || (norm_term
7164 && attr <= HL_ALL
7165 && ((attr & ~(HL_BOLD | HL_ITALIC)) == 0))))
7168 * check if we really need to clear something
7170 col = start_col;
7171 if (c1 != ' ') /* don't clear first char */
7172 ++col;
7174 off = LineOffset[row] + col;
7175 end_off = LineOffset[row] + end_col;
7177 /* skip blanks (used often, keep it fast!) */
7178 #ifdef FEAT_MBYTE
7179 if (enc_utf8)
7180 while (off < end_off && ScreenLines[off] == ' '
7181 && ScreenAttrs[off] == 0 && ScreenLinesUC[off] == 0)
7182 ++off;
7183 else
7184 #endif
7185 while (off < end_off && ScreenLines[off] == ' '
7186 && ScreenAttrs[off] == 0)
7187 ++off;
7188 if (off < end_off) /* something to be cleared */
7190 col = off - LineOffset[row];
7191 screen_stop_highlight();
7192 term_windgoto(row, col);/* clear rest of this screen line */
7193 out_str(T_CE);
7194 screen_start(); /* don't know where cursor is now */
7195 col = end_col - col;
7196 while (col--) /* clear chars in ScreenLines */
7198 ScreenLines[off] = ' ';
7199 #ifdef FEAT_MBYTE
7200 if (enc_utf8)
7201 ScreenLinesUC[off] = 0;
7202 #endif
7203 ScreenAttrs[off] = 0;
7204 ++off;
7207 did_delete = TRUE; /* the chars are cleared now */
7210 off = LineOffset[row] + start_col;
7211 c = c1;
7212 for (col = start_col; col < end_col; ++col)
7214 if (ScreenLines[off] != c
7215 #ifdef FEAT_MBYTE
7216 || (enc_utf8 && (int)ScreenLinesUC[off]
7217 != (c >= 0x80 ? c : 0))
7218 #endif
7219 || ScreenAttrs[off] != attr
7220 #if defined(FEAT_GUI) || defined(UNIX)
7221 || force_next
7222 #endif
7225 #if defined(FEAT_GUI) || defined(UNIX)
7226 /* The bold trick may make a single row of pixels appear in
7227 * the next character. When a bold character is removed, the
7228 * next character should be redrawn too. This happens for our
7229 * own GUI and for some xterms. */
7230 if (
7231 # ifdef FEAT_GUI
7232 gui.in_use
7233 # endif
7234 # if defined(FEAT_GUI) && defined(UNIX)
7236 # endif
7237 # ifdef UNIX
7238 term_is_xterm
7239 # endif
7242 if (ScreenLines[off] != ' '
7243 && (ScreenAttrs[off] > HL_ALL
7244 || ScreenAttrs[off] & HL_BOLD))
7245 force_next = TRUE;
7246 else
7247 force_next = FALSE;
7249 #endif
7250 ScreenLines[off] = c;
7251 #ifdef FEAT_MBYTE
7252 if (enc_utf8)
7254 if (c >= 0x80)
7256 ScreenLinesUC[off] = c;
7257 ScreenLinesC[0][off] = 0;
7259 else
7260 ScreenLinesUC[off] = 0;
7262 #endif
7263 ScreenAttrs[off] = attr;
7264 if (!did_delete || c != ' ')
7265 screen_char(off, row, col);
7267 ++off;
7268 if (col == start_col)
7270 if (did_delete)
7271 break;
7272 c = c2;
7275 if (end_col == Columns)
7276 LineWraps[row] = FALSE;
7277 if (row == Rows - 1) /* overwritten the command line */
7279 redraw_cmdline = TRUE;
7280 if (c1 == ' ' && c2 == ' ')
7281 clear_cmdline = FALSE; /* command line has been cleared */
7282 if (start_col == 0)
7283 mode_displayed = FALSE; /* mode cleared or overwritten */
7289 * Check if there should be a delay. Used before clearing or redrawing the
7290 * screen or the command line.
7292 void
7293 check_for_delay(check_msg_scroll)
7294 int check_msg_scroll;
7296 if ((emsg_on_display || (check_msg_scroll && msg_scroll))
7297 && !did_wait_return
7298 && emsg_silent == 0)
7300 out_flush();
7301 ui_delay(1000L, TRUE);
7302 emsg_on_display = FALSE;
7303 if (check_msg_scroll)
7304 msg_scroll = FALSE;
7309 * screen_valid - allocate screen buffers if size changed
7310 * If "clear" is TRUE: clear screen if it has been resized.
7311 * Returns TRUE if there is a valid screen to write to.
7312 * Returns FALSE when starting up and screen not initialized yet.
7315 screen_valid(clear)
7316 int clear;
7318 screenalloc(clear); /* allocate screen buffers if size changed */
7319 return (ScreenLines != NULL);
7323 * Resize the shell to Rows and Columns.
7324 * Allocate ScreenLines[] and associated items.
7326 * There may be some time between setting Rows and Columns and (re)allocating
7327 * ScreenLines[]. This happens when starting up and when (manually) changing
7328 * the shell size. Always use screen_Rows and screen_Columns to access items
7329 * in ScreenLines[]. Use Rows and Columns for positioning text etc. where the
7330 * final size of the shell is needed.
7332 void
7333 screenalloc(clear)
7334 int clear;
7336 int new_row, old_row;
7337 #ifdef FEAT_GUI
7338 int old_Rows;
7339 #endif
7340 win_T *wp;
7341 int outofmem = FALSE;
7342 int len;
7343 schar_T *new_ScreenLines;
7344 #ifdef FEAT_MBYTE
7345 u8char_T *new_ScreenLinesUC = NULL;
7346 u8char_T *new_ScreenLinesC[MAX_MCO];
7347 schar_T *new_ScreenLines2 = NULL;
7348 int i;
7349 #endif
7350 sattr_T *new_ScreenAttrs;
7351 unsigned *new_LineOffset;
7352 char_u *new_LineWraps;
7353 #ifdef FEAT_WINDOWS
7354 short *new_TabPageIdxs;
7355 tabpage_T *tp;
7356 #endif
7357 static int entered = FALSE; /* avoid recursiveness */
7358 static int done_outofmem_msg = FALSE; /* did outofmem message */
7361 * Allocation of the screen buffers is done only when the size changes and
7362 * when Rows and Columns have been set and we have started doing full
7363 * screen stuff.
7365 if ((ScreenLines != NULL
7366 && Rows == screen_Rows
7367 && Columns == screen_Columns
7368 #ifdef FEAT_MBYTE
7369 && enc_utf8 == (ScreenLinesUC != NULL)
7370 && (enc_dbcs == DBCS_JPNU) == (ScreenLines2 != NULL)
7371 && p_mco == Screen_mco
7372 #endif
7374 || Rows == 0
7375 || Columns == 0
7376 || (!full_screen && ScreenLines == NULL))
7377 return;
7380 * It's possible that we produce an out-of-memory message below, which
7381 * will cause this function to be called again. To break the loop, just
7382 * return here.
7384 if (entered)
7385 return;
7386 entered = TRUE;
7389 * Note that the window sizes are updated before reallocating the arrays,
7390 * thus we must not redraw here!
7392 ++RedrawingDisabled;
7394 win_new_shellsize(); /* fit the windows in the new sized shell */
7396 comp_col(); /* recompute columns for shown command and ruler */
7399 * We're changing the size of the screen.
7400 * - Allocate new arrays for ScreenLines and ScreenAttrs.
7401 * - Move lines from the old arrays into the new arrays, clear extra
7402 * lines (unless the screen is going to be cleared).
7403 * - Free the old arrays.
7405 * If anything fails, make ScreenLines NULL, so we don't do anything!
7406 * Continuing with the old ScreenLines may result in a crash, because the
7407 * size is wrong.
7409 FOR_ALL_TAB_WINDOWS(tp, wp)
7410 win_free_lsize(wp);
7412 new_ScreenLines = (schar_T *)lalloc((long_u)(
7413 (Rows + 1) * Columns * sizeof(schar_T)), FALSE);
7414 #ifdef FEAT_MBYTE
7415 vim_memset(new_ScreenLinesC, 0, sizeof(u8char_T) * MAX_MCO);
7416 if (enc_utf8)
7418 new_ScreenLinesUC = (u8char_T *)lalloc((long_u)(
7419 (Rows + 1) * Columns * sizeof(u8char_T)), FALSE);
7420 for (i = 0; i < p_mco; ++i)
7421 new_ScreenLinesC[i] = (u8char_T *)lalloc((long_u)(
7422 (Rows + 1) * Columns * sizeof(u8char_T)), FALSE);
7424 if (enc_dbcs == DBCS_JPNU)
7425 new_ScreenLines2 = (schar_T *)lalloc((long_u)(
7426 (Rows + 1) * Columns * sizeof(schar_T)), FALSE);
7427 #endif
7428 new_ScreenAttrs = (sattr_T *)lalloc((long_u)(
7429 (Rows + 1) * Columns * sizeof(sattr_T)), FALSE);
7430 new_LineOffset = (unsigned *)lalloc((long_u)(
7431 Rows * sizeof(unsigned)), FALSE);
7432 new_LineWraps = (char_u *)lalloc((long_u)(Rows * sizeof(char_u)), FALSE);
7433 #ifdef FEAT_WINDOWS
7434 new_TabPageIdxs = (short *)lalloc((long_u)(Columns * sizeof(short)), FALSE);
7435 #endif
7437 FOR_ALL_TAB_WINDOWS(tp, wp)
7439 if (win_alloc_lines(wp) == FAIL)
7441 outofmem = TRUE;
7442 #ifdef FEAT_WINDOWS
7443 break;
7444 #endif
7448 #ifdef FEAT_MBYTE
7449 for (i = 0; i < p_mco; ++i)
7450 if (new_ScreenLinesC[i] == NULL)
7451 break;
7452 #endif
7453 if (new_ScreenLines == NULL
7454 #ifdef FEAT_MBYTE
7455 || (enc_utf8 && (new_ScreenLinesUC == NULL || i != p_mco))
7456 || (enc_dbcs == DBCS_JPNU && new_ScreenLines2 == NULL)
7457 #endif
7458 || new_ScreenAttrs == NULL
7459 || new_LineOffset == NULL
7460 || new_LineWraps == NULL
7461 #ifdef FEAT_WINDOWS
7462 || new_TabPageIdxs == NULL
7463 #endif
7464 || outofmem)
7466 if (ScreenLines != NULL || !done_outofmem_msg)
7468 /* guess the size */
7469 do_outofmem_msg((long_u)((Rows + 1) * Columns));
7471 /* Remember we did this to avoid getting outofmem messages over
7472 * and over again. */
7473 done_outofmem_msg = TRUE;
7475 vim_free(new_ScreenLines);
7476 new_ScreenLines = NULL;
7477 #ifdef FEAT_MBYTE
7478 vim_free(new_ScreenLinesUC);
7479 new_ScreenLinesUC = NULL;
7480 for (i = 0; i < p_mco; ++i)
7482 vim_free(new_ScreenLinesC[i]);
7483 new_ScreenLinesC[i] = NULL;
7485 vim_free(new_ScreenLines2);
7486 new_ScreenLines2 = NULL;
7487 #endif
7488 vim_free(new_ScreenAttrs);
7489 new_ScreenAttrs = NULL;
7490 vim_free(new_LineOffset);
7491 new_LineOffset = NULL;
7492 vim_free(new_LineWraps);
7493 new_LineWraps = NULL;
7494 #ifdef FEAT_WINDOWS
7495 vim_free(new_TabPageIdxs);
7496 new_TabPageIdxs = NULL;
7497 #endif
7499 else
7501 done_outofmem_msg = FALSE;
7503 for (new_row = 0; new_row < Rows; ++new_row)
7505 new_LineOffset[new_row] = new_row * Columns;
7506 new_LineWraps[new_row] = FALSE;
7509 * If the screen is not going to be cleared, copy as much as
7510 * possible from the old screen to the new one and clear the rest
7511 * (used when resizing the window at the "--more--" prompt or when
7512 * executing an external command, for the GUI).
7514 if (!clear)
7516 (void)vim_memset(new_ScreenLines + new_row * Columns,
7517 ' ', (size_t)Columns * sizeof(schar_T));
7518 #ifdef FEAT_MBYTE
7519 if (enc_utf8)
7521 (void)vim_memset(new_ScreenLinesUC + new_row * Columns,
7522 0, (size_t)Columns * sizeof(u8char_T));
7523 for (i = 0; i < p_mco; ++i)
7524 (void)vim_memset(new_ScreenLinesC[i]
7525 + new_row * Columns,
7526 0, (size_t)Columns * sizeof(u8char_T));
7528 if (enc_dbcs == DBCS_JPNU)
7529 (void)vim_memset(new_ScreenLines2 + new_row * Columns,
7530 0, (size_t)Columns * sizeof(schar_T));
7531 #endif
7532 (void)vim_memset(new_ScreenAttrs + new_row * Columns,
7533 0, (size_t)Columns * sizeof(sattr_T));
7534 old_row = new_row + (screen_Rows - Rows);
7535 if (old_row >= 0 && ScreenLines != NULL)
7537 if (screen_Columns < Columns)
7538 len = screen_Columns;
7539 else
7540 len = Columns;
7541 #ifdef FEAT_MBYTE
7542 /* When switching to utf-8 don't copy characters, they
7543 * may be invalid now. Also when p_mco changes. */
7544 if (!(enc_utf8 && ScreenLinesUC == NULL)
7545 && p_mco == Screen_mco)
7546 #endif
7547 mch_memmove(new_ScreenLines + new_LineOffset[new_row],
7548 ScreenLines + LineOffset[old_row],
7549 (size_t)len * sizeof(schar_T));
7550 #ifdef FEAT_MBYTE
7551 if (enc_utf8 && ScreenLinesUC != NULL
7552 && p_mco == Screen_mco)
7554 mch_memmove(new_ScreenLinesUC + new_LineOffset[new_row],
7555 ScreenLinesUC + LineOffset[old_row],
7556 (size_t)len * sizeof(u8char_T));
7557 for (i = 0; i < p_mco; ++i)
7558 mch_memmove(new_ScreenLinesC[i]
7559 + new_LineOffset[new_row],
7560 ScreenLinesC[i] + LineOffset[old_row],
7561 (size_t)len * sizeof(u8char_T));
7563 if (enc_dbcs == DBCS_JPNU && ScreenLines2 != NULL)
7564 mch_memmove(new_ScreenLines2 + new_LineOffset[new_row],
7565 ScreenLines2 + LineOffset[old_row],
7566 (size_t)len * sizeof(schar_T));
7567 #endif
7568 mch_memmove(new_ScreenAttrs + new_LineOffset[new_row],
7569 ScreenAttrs + LineOffset[old_row],
7570 (size_t)len * sizeof(sattr_T));
7574 /* Use the last line of the screen for the current line. */
7575 current_ScreenLine = new_ScreenLines + Rows * Columns;
7578 free_screenlines();
7580 ScreenLines = new_ScreenLines;
7581 #ifdef FEAT_MBYTE
7582 ScreenLinesUC = new_ScreenLinesUC;
7583 for (i = 0; i < p_mco; ++i)
7584 ScreenLinesC[i] = new_ScreenLinesC[i];
7585 Screen_mco = p_mco;
7586 ScreenLines2 = new_ScreenLines2;
7587 #endif
7588 ScreenAttrs = new_ScreenAttrs;
7589 LineOffset = new_LineOffset;
7590 LineWraps = new_LineWraps;
7591 #ifdef FEAT_WINDOWS
7592 TabPageIdxs = new_TabPageIdxs;
7593 #endif
7595 /* It's important that screen_Rows and screen_Columns reflect the actual
7596 * size of ScreenLines[]. Set them before calling anything. */
7597 #ifdef FEAT_GUI
7598 old_Rows = screen_Rows;
7599 #endif
7600 screen_Rows = Rows;
7601 screen_Columns = Columns;
7603 must_redraw = CLEAR; /* need to clear the screen later */
7604 if (clear)
7605 screenclear2();
7607 #ifdef FEAT_GUI
7608 else if (gui.in_use
7609 && !gui.starting
7610 && ScreenLines != NULL
7611 && old_Rows != Rows)
7613 (void)gui_redraw_block(0, 0, (int)Rows - 1, (int)Columns - 1, 0);
7615 * Adjust the position of the cursor, for when executing an external
7616 * command.
7618 if (msg_row >= Rows) /* Rows got smaller */
7619 msg_row = Rows - 1; /* put cursor at last row */
7620 else if (Rows > old_Rows) /* Rows got bigger */
7621 msg_row += Rows - old_Rows; /* put cursor in same place */
7622 if (msg_col >= Columns) /* Columns got smaller */
7623 msg_col = Columns - 1; /* put cursor at last column */
7625 #endif
7627 entered = FALSE;
7628 --RedrawingDisabled;
7630 #ifdef FEAT_AUTOCMD
7631 if (starting == 0)
7632 apply_autocmds(EVENT_VIMRESIZED, NULL, NULL, FALSE, curbuf);
7633 #endif
7636 void
7637 free_screenlines()
7639 #ifdef FEAT_MBYTE
7640 int i;
7642 vim_free(ScreenLinesUC);
7643 for (i = 0; i < Screen_mco; ++i)
7644 vim_free(ScreenLinesC[i]);
7645 vim_free(ScreenLines2);
7646 #endif
7647 vim_free(ScreenLines);
7648 vim_free(ScreenAttrs);
7649 vim_free(LineOffset);
7650 vim_free(LineWraps);
7651 #ifdef FEAT_WINDOWS
7652 vim_free(TabPageIdxs);
7653 #endif
7656 void
7657 screenclear()
7659 check_for_delay(FALSE);
7660 screenalloc(FALSE); /* allocate screen buffers if size changed */
7661 screenclear2(); /* clear the screen */
7664 static void
7665 screenclear2()
7667 int i;
7669 if (starting == NO_SCREEN || ScreenLines == NULL
7670 #ifdef FEAT_GUI
7671 || (gui.in_use && gui.starting)
7672 #endif
7674 return;
7676 #ifdef FEAT_GUI
7677 if (!gui.in_use)
7678 #endif
7679 screen_attr = -1; /* force setting the Normal colors */
7680 screen_stop_highlight(); /* don't want highlighting here */
7682 #ifdef FEAT_CLIPBOARD
7683 /* disable selection without redrawing it */
7684 clip_scroll_selection(9999);
7685 #endif
7687 /* blank out ScreenLines */
7688 for (i = 0; i < Rows; ++i)
7690 lineclear(LineOffset[i], (int)Columns);
7691 LineWraps[i] = FALSE;
7694 if (can_clear(T_CL))
7696 out_str(T_CL); /* clear the display */
7697 clear_cmdline = FALSE;
7698 mode_displayed = FALSE;
7700 else
7702 /* can't clear the screen, mark all chars with invalid attributes */
7703 for (i = 0; i < Rows; ++i)
7704 lineinvalid(LineOffset[i], (int)Columns);
7705 clear_cmdline = TRUE;
7708 screen_cleared = TRUE; /* can use contents of ScreenLines now */
7710 win_rest_invalid(firstwin);
7711 redraw_cmdline = TRUE;
7712 #ifdef FEAT_WINDOWS
7713 redraw_tabline = TRUE;
7714 #endif
7715 if (must_redraw == CLEAR) /* no need to clear again */
7716 must_redraw = NOT_VALID;
7717 compute_cmdrow();
7718 msg_row = cmdline_row; /* put cursor on last line for messages */
7719 msg_col = 0;
7720 screen_start(); /* don't know where cursor is now */
7721 msg_scrolled = 0; /* can't scroll back */
7722 msg_didany = FALSE;
7723 msg_didout = FALSE;
7727 * Clear one line in ScreenLines.
7729 static void
7730 lineclear(off, width)
7731 unsigned off;
7732 int width;
7734 (void)vim_memset(ScreenLines + off, ' ', (size_t)width * sizeof(schar_T));
7735 #ifdef FEAT_MBYTE
7736 if (enc_utf8)
7737 (void)vim_memset(ScreenLinesUC + off, 0,
7738 (size_t)width * sizeof(u8char_T));
7739 #endif
7740 (void)vim_memset(ScreenAttrs + off, 0, (size_t)width * sizeof(sattr_T));
7744 * Mark one line in ScreenLines invalid by setting the attributes to an
7745 * invalid value.
7747 static void
7748 lineinvalid(off, width)
7749 unsigned off;
7750 int width;
7752 (void)vim_memset(ScreenAttrs + off, -1, (size_t)width * sizeof(sattr_T));
7755 #ifdef FEAT_VERTSPLIT
7757 * Copy part of a Screenline for vertically split window "wp".
7759 static void
7760 linecopy(to, from, wp)
7761 int to;
7762 int from;
7763 win_T *wp;
7765 unsigned off_to = LineOffset[to] + wp->w_wincol;
7766 unsigned off_from = LineOffset[from] + wp->w_wincol;
7768 mch_memmove(ScreenLines + off_to, ScreenLines + off_from,
7769 wp->w_width * sizeof(schar_T));
7770 # ifdef FEAT_MBYTE
7771 if (enc_utf8)
7773 int i;
7775 mch_memmove(ScreenLinesUC + off_to, ScreenLinesUC + off_from,
7776 wp->w_width * sizeof(u8char_T));
7777 for (i = 0; i < p_mco; ++i)
7778 mch_memmove(ScreenLinesC[i] + off_to, ScreenLinesC[i] + off_from,
7779 wp->w_width * sizeof(u8char_T));
7781 if (enc_dbcs == DBCS_JPNU)
7782 mch_memmove(ScreenLines2 + off_to, ScreenLines2 + off_from,
7783 wp->w_width * sizeof(schar_T));
7784 # endif
7785 mch_memmove(ScreenAttrs + off_to, ScreenAttrs + off_from,
7786 wp->w_width * sizeof(sattr_T));
7788 #endif
7791 * Return TRUE if clearing with term string "p" would work.
7792 * It can't work when the string is empty or it won't set the right background.
7795 can_clear(p)
7796 char_u *p;
7798 return (*p != NUL && (t_colors <= 1
7799 #ifdef FEAT_GUI
7800 || gui.in_use
7801 #endif
7802 || cterm_normal_bg_color == 0 || *T_UT != NUL));
7806 * Reset cursor position. Use whenever cursor was moved because of outputting
7807 * something directly to the screen (shell commands) or a terminal control
7808 * code.
7810 void
7811 screen_start()
7813 screen_cur_row = screen_cur_col = 9999;
7817 * Move the cursor to position "row","col" in the screen.
7818 * This tries to find the most efficient way to move, minimizing the number of
7819 * characters sent to the terminal.
7821 void
7822 windgoto(row, col)
7823 int row;
7824 int col;
7826 sattr_T *p;
7827 int i;
7828 int plan;
7829 int cost;
7830 int wouldbe_col;
7831 int noinvcurs;
7832 char_u *bs;
7833 int goto_cost;
7834 int attr;
7836 #define GOTO_COST 7 /* assume a term_windgoto() takes about 7 chars */
7837 #define HIGHL_COST 5 /* assume unhighlight takes 5 chars */
7839 #define PLAN_LE 1
7840 #define PLAN_CR 2
7841 #define PLAN_NL 3
7842 #define PLAN_WRITE 4
7843 /* Can't use ScreenLines unless initialized */
7844 if (ScreenLines == NULL)
7845 return;
7847 if (col != screen_cur_col || row != screen_cur_row)
7849 /* Check for valid position. */
7850 if (row < 0) /* window without text lines? */
7851 row = 0;
7852 if (row >= screen_Rows)
7853 row = screen_Rows - 1;
7854 if (col >= screen_Columns)
7855 col = screen_Columns - 1;
7857 /* check if no cursor movement is allowed in highlight mode */
7858 if (screen_attr && *T_MS == NUL)
7859 noinvcurs = HIGHL_COST;
7860 else
7861 noinvcurs = 0;
7862 goto_cost = GOTO_COST + noinvcurs;
7865 * Plan how to do the positioning:
7866 * 1. Use CR to move it to column 0, same row.
7867 * 2. Use T_LE to move it a few columns to the left.
7868 * 3. Use NL to move a few lines down, column 0.
7869 * 4. Move a few columns to the right with T_ND or by writing chars.
7871 * Don't do this if the cursor went beyond the last column, the cursor
7872 * position is unknown then (some terminals wrap, some don't )
7874 * First check if the highlighting attributes allow us to write
7875 * characters to move the cursor to the right.
7877 if (row >= screen_cur_row && screen_cur_col < Columns)
7880 * If the cursor is in the same row, bigger col, we can use CR
7881 * or T_LE.
7883 bs = NULL; /* init for GCC */
7884 attr = screen_attr;
7885 if (row == screen_cur_row && col < screen_cur_col)
7887 /* "le" is preferred over "bc", because "bc" is obsolete */
7888 if (*T_LE)
7889 bs = T_LE; /* "cursor left" */
7890 else
7891 bs = T_BC; /* "backspace character (old) */
7892 if (*bs)
7893 cost = (screen_cur_col - col) * (int)STRLEN(bs);
7894 else
7895 cost = 999;
7896 if (col + 1 < cost) /* using CR is less characters */
7898 plan = PLAN_CR;
7899 wouldbe_col = 0;
7900 cost = 1; /* CR is just one character */
7902 else
7904 plan = PLAN_LE;
7905 wouldbe_col = col;
7907 if (noinvcurs) /* will stop highlighting */
7909 cost += noinvcurs;
7910 attr = 0;
7915 * If the cursor is above where we want to be, we can use CR LF.
7917 else if (row > screen_cur_row)
7919 plan = PLAN_NL;
7920 wouldbe_col = 0;
7921 cost = (row - screen_cur_row) * 2; /* CR LF */
7922 if (noinvcurs) /* will stop highlighting */
7924 cost += noinvcurs;
7925 attr = 0;
7930 * If the cursor is in the same row, smaller col, just use write.
7932 else
7934 plan = PLAN_WRITE;
7935 wouldbe_col = screen_cur_col;
7936 cost = 0;
7940 * Check if any characters that need to be written have the
7941 * correct attributes. Also avoid UTF-8 characters.
7943 i = col - wouldbe_col;
7944 if (i > 0)
7945 cost += i;
7946 if (cost < goto_cost && i > 0)
7949 * Check if the attributes are correct without additionally
7950 * stopping highlighting.
7952 p = ScreenAttrs + LineOffset[row] + wouldbe_col;
7953 while (i && *p++ == attr)
7954 --i;
7955 if (i != 0)
7958 * Try if it works when highlighting is stopped here.
7960 if (*--p == 0)
7962 cost += noinvcurs;
7963 while (i && *p++ == 0)
7964 --i;
7966 if (i != 0)
7967 cost = 999; /* different attributes, don't do it */
7969 #ifdef FEAT_MBYTE
7970 if (enc_utf8)
7972 /* Don't use an UTF-8 char for positioning, it's slow. */
7973 for (i = wouldbe_col; i < col; ++i)
7974 if (ScreenLinesUC[LineOffset[row] + i] != 0)
7976 cost = 999;
7977 break;
7980 #endif
7984 * We can do it without term_windgoto()!
7986 if (cost < goto_cost)
7988 if (plan == PLAN_LE)
7990 if (noinvcurs)
7991 screen_stop_highlight();
7992 while (screen_cur_col > col)
7994 out_str(bs);
7995 --screen_cur_col;
7998 else if (plan == PLAN_CR)
8000 if (noinvcurs)
8001 screen_stop_highlight();
8002 out_char('\r');
8003 screen_cur_col = 0;
8005 else if (plan == PLAN_NL)
8007 if (noinvcurs)
8008 screen_stop_highlight();
8009 while (screen_cur_row < row)
8011 out_char('\n');
8012 ++screen_cur_row;
8014 screen_cur_col = 0;
8017 i = col - screen_cur_col;
8018 if (i > 0)
8021 * Use cursor-right if it's one character only. Avoids
8022 * removing a line of pixels from the last bold char, when
8023 * using the bold trick in the GUI.
8025 if (T_ND[0] != NUL && T_ND[1] == NUL)
8027 while (i-- > 0)
8028 out_char(*T_ND);
8030 else
8032 int off;
8034 off = LineOffset[row] + screen_cur_col;
8035 while (i-- > 0)
8037 if (ScreenAttrs[off] != screen_attr)
8038 screen_stop_highlight();
8039 #ifdef FEAT_MBYTE
8040 out_flush_check();
8041 #endif
8042 out_char(ScreenLines[off]);
8043 #ifdef FEAT_MBYTE
8044 if (enc_dbcs == DBCS_JPNU
8045 && ScreenLines[off] == 0x8e)
8046 out_char(ScreenLines2[off]);
8047 #endif
8048 ++off;
8054 else
8055 cost = 999;
8057 if (cost >= goto_cost)
8059 if (noinvcurs)
8060 screen_stop_highlight();
8061 if (row == screen_cur_row && (col > screen_cur_col) &&
8062 *T_CRI != NUL)
8063 term_cursor_right(col - screen_cur_col);
8064 else
8065 term_windgoto(row, col);
8067 screen_cur_row = row;
8068 screen_cur_col = col;
8073 * Set cursor to its position in the current window.
8075 void
8076 setcursor()
8078 if (redrawing())
8080 validate_cursor();
8081 windgoto(W_WINROW(curwin) + curwin->w_wrow,
8082 W_WINCOL(curwin) + (
8083 #ifdef FEAT_RIGHTLEFT
8084 /* With 'rightleft' set and the cursor on a double-wide
8085 * character, position it on the leftmost column. */
8086 curwin->w_p_rl ? ((int)W_WIDTH(curwin) - curwin->w_wcol - (
8087 # ifdef FEAT_MBYTE
8088 (has_mbyte
8089 && (*mb_ptr2cells)(ml_get_cursor()) == 2
8090 && vim_isprintc(gchar_cursor())) ? 2 :
8091 # endif
8092 1)) :
8093 #endif
8094 curwin->w_wcol));
8100 * insert 'line_count' lines at 'row' in window 'wp'
8101 * if 'invalid' is TRUE the wp->w_lines[].wl_lnum is invalidated.
8102 * if 'mayclear' is TRUE the screen will be cleared if it is faster than
8103 * scrolling.
8104 * Returns FAIL if the lines are not inserted, OK for success.
8107 win_ins_lines(wp, row, line_count, invalid, mayclear)
8108 win_T *wp;
8109 int row;
8110 int line_count;
8111 int invalid;
8112 int mayclear;
8114 int did_delete;
8115 int nextrow;
8116 int lastrow;
8117 int retval;
8119 if (invalid)
8120 wp->w_lines_valid = 0;
8122 if (wp->w_height < 5)
8123 return FAIL;
8125 if (line_count > wp->w_height - row)
8126 line_count = wp->w_height - row;
8128 retval = win_do_lines(wp, row, line_count, mayclear, FALSE);
8129 if (retval != MAYBE)
8130 return retval;
8133 * If there is a next window or a status line, we first try to delete the
8134 * lines at the bottom to avoid messing what is after the window.
8135 * If this fails and there are following windows, don't do anything to avoid
8136 * messing up those windows, better just redraw.
8138 did_delete = FALSE;
8139 #ifdef FEAT_WINDOWS
8140 if (wp->w_next != NULL || wp->w_status_height)
8142 if (screen_del_lines(0, W_WINROW(wp) + wp->w_height - line_count,
8143 line_count, (int)Rows, FALSE, NULL) == OK)
8144 did_delete = TRUE;
8145 else if (wp->w_next)
8146 return FAIL;
8148 #endif
8150 * if no lines deleted, blank the lines that will end up below the window
8152 if (!did_delete)
8154 #ifdef FEAT_WINDOWS
8155 wp->w_redr_status = TRUE;
8156 #endif
8157 redraw_cmdline = TRUE;
8158 nextrow = W_WINROW(wp) + wp->w_height + W_STATUS_HEIGHT(wp);
8159 lastrow = nextrow + line_count;
8160 if (lastrow > Rows)
8161 lastrow = Rows;
8162 screen_fill(nextrow - line_count, lastrow - line_count,
8163 W_WINCOL(wp), (int)W_ENDCOL(wp),
8164 ' ', ' ', 0);
8167 if (screen_ins_lines(0, W_WINROW(wp) + row, line_count, (int)Rows, NULL)
8168 == FAIL)
8170 /* deletion will have messed up other windows */
8171 if (did_delete)
8173 #ifdef FEAT_WINDOWS
8174 wp->w_redr_status = TRUE;
8175 #endif
8176 win_rest_invalid(W_NEXT(wp));
8178 return FAIL;
8181 return OK;
8185 * delete "line_count" window lines at "row" in window "wp"
8186 * If "invalid" is TRUE curwin->w_lines[] is invalidated.
8187 * If "mayclear" is TRUE the screen will be cleared if it is faster than
8188 * scrolling
8189 * Return OK for success, FAIL if the lines are not deleted.
8192 win_del_lines(wp, row, line_count, invalid, mayclear)
8193 win_T *wp;
8194 int row;
8195 int line_count;
8196 int invalid;
8197 int mayclear;
8199 int retval;
8201 if (invalid)
8202 wp->w_lines_valid = 0;
8204 if (line_count > wp->w_height - row)
8205 line_count = wp->w_height - row;
8207 retval = win_do_lines(wp, row, line_count, mayclear, TRUE);
8208 if (retval != MAYBE)
8209 return retval;
8211 if (screen_del_lines(0, W_WINROW(wp) + row, line_count,
8212 (int)Rows, FALSE, NULL) == FAIL)
8213 return FAIL;
8215 #ifdef FEAT_WINDOWS
8217 * If there are windows or status lines below, try to put them at the
8218 * correct place. If we can't do that, they have to be redrawn.
8220 if (wp->w_next || wp->w_status_height || cmdline_row < Rows - 1)
8222 if (screen_ins_lines(0, W_WINROW(wp) + wp->w_height - line_count,
8223 line_count, (int)Rows, NULL) == FAIL)
8225 wp->w_redr_status = TRUE;
8226 win_rest_invalid(wp->w_next);
8230 * If this is the last window and there is no status line, redraw the
8231 * command line later.
8233 else
8234 #endif
8235 redraw_cmdline = TRUE;
8236 return OK;
8240 * Common code for win_ins_lines() and win_del_lines().
8241 * Returns OK or FAIL when the work has been done.
8242 * Returns MAYBE when not finished yet.
8244 static int
8245 win_do_lines(wp, row, line_count, mayclear, del)
8246 win_T *wp;
8247 int row;
8248 int line_count;
8249 int mayclear;
8250 int del;
8252 int retval;
8254 if (!redrawing() || line_count <= 0)
8255 return FAIL;
8257 /* only a few lines left: redraw is faster */
8258 if (mayclear && Rows - line_count < 5
8259 #ifdef FEAT_VERTSPLIT
8260 && wp->w_width == Columns
8261 #endif
8264 screenclear(); /* will set wp->w_lines_valid to 0 */
8265 return FAIL;
8269 * Delete all remaining lines
8271 if (row + line_count >= wp->w_height)
8273 screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + wp->w_height,
8274 W_WINCOL(wp), (int)W_ENDCOL(wp),
8275 ' ', ' ', 0);
8276 return OK;
8280 * when scrolling, the message on the command line should be cleared,
8281 * otherwise it will stay there forever.
8283 clear_cmdline = TRUE;
8286 * If the terminal can set a scroll region, use that.
8287 * Always do this in a vertically split window. This will redraw from
8288 * ScreenLines[] when t_CV isn't defined. That's faster than using
8289 * win_line().
8290 * Don't use a scroll region when we are going to redraw the text, writing
8291 * a character in the lower right corner of the scroll region causes a
8292 * scroll-up in the DJGPP version.
8294 if (scroll_region
8295 #ifdef FEAT_VERTSPLIT
8296 || W_WIDTH(wp) != Columns
8297 #endif
8300 #ifdef FEAT_VERTSPLIT
8301 if (scroll_region && (wp->w_width == Columns || *T_CSV != NUL))
8302 #endif
8303 scroll_region_set(wp, row);
8304 if (del)
8305 retval = screen_del_lines(W_WINROW(wp) + row, 0, line_count,
8306 wp->w_height - row, FALSE, wp);
8307 else
8308 retval = screen_ins_lines(W_WINROW(wp) + row, 0, line_count,
8309 wp->w_height - row, wp);
8310 #ifdef FEAT_VERTSPLIT
8311 if (scroll_region && (wp->w_width == Columns || *T_CSV != NUL))
8312 #endif
8313 scroll_region_reset();
8314 return retval;
8317 #ifdef FEAT_WINDOWS
8318 if (wp->w_next != NULL && p_tf) /* don't delete/insert on fast terminal */
8319 return FAIL;
8320 #endif
8322 return MAYBE;
8326 * window 'wp' and everything after it is messed up, mark it for redraw
8328 static void
8329 win_rest_invalid(wp)
8330 win_T *wp;
8332 #ifdef FEAT_WINDOWS
8333 while (wp != NULL)
8334 #else
8335 if (wp != NULL)
8336 #endif
8338 redraw_win_later(wp, NOT_VALID);
8339 #ifdef FEAT_WINDOWS
8340 wp->w_redr_status = TRUE;
8341 wp = wp->w_next;
8342 #endif
8344 redraw_cmdline = TRUE;
8348 * The rest of the routines in this file perform screen manipulations. The
8349 * given operation is performed physically on the screen. The corresponding
8350 * change is also made to the internal screen image. In this way, the editor
8351 * anticipates the effect of editing changes on the appearance of the screen.
8352 * That way, when we call screenupdate a complete redraw isn't usually
8353 * necessary. Another advantage is that we can keep adding code to anticipate
8354 * screen changes, and in the meantime, everything still works.
8358 * types for inserting or deleting lines
8360 #define USE_T_CAL 1
8361 #define USE_T_CDL 2
8362 #define USE_T_AL 3
8363 #define USE_T_CE 4
8364 #define USE_T_DL 5
8365 #define USE_T_SR 6
8366 #define USE_NL 7
8367 #define USE_T_CD 8
8368 #define USE_REDRAW 9
8371 * insert lines on the screen and update ScreenLines[]
8372 * 'end' is the line after the scrolled part. Normally it is Rows.
8373 * When scrolling region used 'off' is the offset from the top for the region.
8374 * 'row' and 'end' are relative to the start of the region.
8376 * return FAIL for failure, OK for success.
8379 screen_ins_lines(off, row, line_count, end, wp)
8380 int off;
8381 int row;
8382 int line_count;
8383 int end;
8384 win_T *wp; /* NULL or window to use width from */
8386 int i;
8387 int j;
8388 unsigned temp;
8389 int cursor_row;
8390 int type;
8391 int result_empty;
8392 int can_ce = can_clear(T_CE);
8395 * FAIL if
8396 * - there is no valid screen
8397 * - the screen has to be redrawn completely
8398 * - the line count is less than one
8399 * - the line count is more than 'ttyscroll'
8401 if (!screen_valid(TRUE) || line_count <= 0 || line_count > p_ttyscroll)
8402 return FAIL;
8405 * There are seven ways to insert lines:
8406 * 0. When in a vertically split window and t_CV isn't set, redraw the
8407 * characters from ScreenLines[].
8408 * 1. Use T_CD (clear to end of display) if it exists and the result of
8409 * the insert is just empty lines
8410 * 2. Use T_CAL (insert multiple lines) if it exists and T_AL is not
8411 * present or line_count > 1. It looks better if we do all the inserts
8412 * at once.
8413 * 3. Use T_CDL (delete multiple lines) if it exists and the result of the
8414 * insert is just empty lines and T_CE is not present or line_count >
8415 * 1.
8416 * 4. Use T_AL (insert line) if it exists.
8417 * 5. Use T_CE (erase line) if it exists and the result of the insert is
8418 * just empty lines.
8419 * 6. Use T_DL (delete line) if it exists and the result of the insert is
8420 * just empty lines.
8421 * 7. Use T_SR (scroll reverse) if it exists and inserting at row 0 and
8422 * the 'da' flag is not set or we have clear line capability.
8423 * 8. redraw the characters from ScreenLines[].
8425 * Careful: In a hpterm scroll reverse doesn't work as expected, it moves
8426 * the scrollbar for the window. It does have insert line, use that if it
8427 * exists.
8429 result_empty = (row + line_count >= end);
8430 #ifdef FEAT_VERTSPLIT
8431 if (wp != NULL && wp->w_width != Columns && *T_CSV == NUL)
8432 type = USE_REDRAW;
8433 else
8434 #endif
8435 if (can_clear(T_CD) && result_empty)
8436 type = USE_T_CD;
8437 else if (*T_CAL != NUL && (line_count > 1 || *T_AL == NUL))
8438 type = USE_T_CAL;
8439 else if (*T_CDL != NUL && result_empty && (line_count > 1 || !can_ce))
8440 type = USE_T_CDL;
8441 else if (*T_AL != NUL)
8442 type = USE_T_AL;
8443 else if (can_ce && result_empty)
8444 type = USE_T_CE;
8445 else if (*T_DL != NUL && result_empty)
8446 type = USE_T_DL;
8447 else if (*T_SR != NUL && row == 0 && (*T_DA == NUL || can_ce))
8448 type = USE_T_SR;
8449 else
8450 return FAIL;
8453 * For clearing the lines screen_del_lines() is used. This will also take
8454 * care of t_db if necessary.
8456 if (type == USE_T_CD || type == USE_T_CDL ||
8457 type == USE_T_CE || type == USE_T_DL)
8458 return screen_del_lines(off, row, line_count, end, FALSE, wp);
8461 * If text is retained below the screen, first clear or delete as many
8462 * lines at the bottom of the window as are about to be inserted so that
8463 * the deleted lines won't later surface during a screen_del_lines.
8465 if (*T_DB)
8466 screen_del_lines(off, end - line_count, line_count, end, FALSE, wp);
8468 #ifdef FEAT_CLIPBOARD
8469 /* Remove a modeless selection when inserting lines halfway the screen
8470 * or not the full width of the screen. */
8471 if (off + row > 0
8472 # ifdef FEAT_VERTSPLIT
8473 || (wp != NULL && wp->w_width != Columns)
8474 # endif
8476 clip_clear_selection();
8477 else
8478 clip_scroll_selection(-line_count);
8479 #endif
8481 #ifdef FEAT_GUI
8482 /* Don't update the GUI cursor here, ScreenLines[] is invalid until the
8483 * scrolling is actually carried out. */
8484 gui_dont_update_cursor();
8485 #endif
8487 if (*T_CCS != NUL) /* cursor relative to region */
8488 cursor_row = row;
8489 else
8490 cursor_row = row + off;
8493 * Shift LineOffset[] line_count down to reflect the inserted lines.
8494 * Clear the inserted lines in ScreenLines[].
8496 row += off;
8497 end += off;
8498 for (i = 0; i < line_count; ++i)
8500 #ifdef FEAT_VERTSPLIT
8501 if (wp != NULL && wp->w_width != Columns)
8503 /* need to copy part of a line */
8504 j = end - 1 - i;
8505 while ((j -= line_count) >= row)
8506 linecopy(j + line_count, j, wp);
8507 j += line_count;
8508 if (can_clear((char_u *)" "))
8509 lineclear(LineOffset[j] + wp->w_wincol, wp->w_width);
8510 else
8511 lineinvalid(LineOffset[j] + wp->w_wincol, wp->w_width);
8512 LineWraps[j] = FALSE;
8514 else
8515 #endif
8517 j = end - 1 - i;
8518 temp = LineOffset[j];
8519 while ((j -= line_count) >= row)
8521 LineOffset[j + line_count] = LineOffset[j];
8522 LineWraps[j + line_count] = LineWraps[j];
8524 LineOffset[j + line_count] = temp;
8525 LineWraps[j + line_count] = FALSE;
8526 if (can_clear((char_u *)" "))
8527 lineclear(temp, (int)Columns);
8528 else
8529 lineinvalid(temp, (int)Columns);
8533 screen_stop_highlight();
8534 windgoto(cursor_row, 0);
8536 #ifdef FEAT_VERTSPLIT
8537 /* redraw the characters */
8538 if (type == USE_REDRAW)
8539 redraw_block(row, end, wp);
8540 else
8541 #endif
8542 if (type == USE_T_CAL)
8544 term_append_lines(line_count);
8545 screen_start(); /* don't know where cursor is now */
8547 else
8549 for (i = 0; i < line_count; i++)
8551 if (type == USE_T_AL)
8553 if (i && cursor_row != 0)
8554 windgoto(cursor_row, 0);
8555 out_str(T_AL);
8557 else /* type == USE_T_SR */
8558 out_str(T_SR);
8559 screen_start(); /* don't know where cursor is now */
8564 * With scroll-reverse and 'da' flag set we need to clear the lines that
8565 * have been scrolled down into the region.
8567 if (type == USE_T_SR && *T_DA)
8569 for (i = 0; i < line_count; ++i)
8571 windgoto(off + i, 0);
8572 out_str(T_CE);
8573 screen_start(); /* don't know where cursor is now */
8577 #ifdef FEAT_GUI
8578 gui_can_update_cursor();
8579 if (gui.in_use)
8580 out_flush(); /* always flush after a scroll */
8581 #endif
8582 return OK;
8586 * delete lines on the screen and update ScreenLines[]
8587 * 'end' is the line after the scrolled part. Normally it is Rows.
8588 * When scrolling region used 'off' is the offset from the top for the region.
8589 * 'row' and 'end' are relative to the start of the region.
8591 * Return OK for success, FAIL if the lines are not deleted.
8593 /*ARGSUSED*/
8595 screen_del_lines(off, row, line_count, end, force, wp)
8596 int off;
8597 int row;
8598 int line_count;
8599 int end;
8600 int force; /* even when line_count > p_ttyscroll */
8601 win_T *wp; /* NULL or window to use width from */
8603 int j;
8604 int i;
8605 unsigned temp;
8606 int cursor_row;
8607 int cursor_end;
8608 int result_empty; /* result is empty until end of region */
8609 int can_delete; /* deleting line codes can be used */
8610 int type;
8613 * FAIL if
8614 * - there is no valid screen
8615 * - the screen has to be redrawn completely
8616 * - the line count is less than one
8617 * - the line count is more than 'ttyscroll'
8619 if (!screen_valid(TRUE) || line_count <= 0 ||
8620 (!force && line_count > p_ttyscroll))
8621 return FAIL;
8624 * Check if the rest of the current region will become empty.
8626 result_empty = row + line_count >= end;
8629 * We can delete lines only when 'db' flag not set or when 'ce' option
8630 * available.
8632 can_delete = (*T_DB == NUL || can_clear(T_CE));
8635 * There are six ways to delete lines:
8636 * 0. When in a vertically split window and t_CV isn't set, redraw the
8637 * characters from ScreenLines[].
8638 * 1. Use T_CD if it exists and the result is empty.
8639 * 2. Use newlines if row == 0 and count == 1 or T_CDL does not exist.
8640 * 3. Use T_CDL (delete multiple lines) if it exists and line_count > 1 or
8641 * none of the other ways work.
8642 * 4. Use T_CE (erase line) if the result is empty.
8643 * 5. Use T_DL (delete line) if it exists.
8644 * 6. redraw the characters from ScreenLines[].
8646 #ifdef FEAT_VERTSPLIT
8647 if (wp != NULL && wp->w_width != Columns && *T_CSV == NUL)
8648 type = USE_REDRAW;
8649 else
8650 #endif
8651 if (can_clear(T_CD) && result_empty)
8652 type = USE_T_CD;
8653 #if defined(__BEOS__) && defined(BEOS_DR8)
8655 * USE_NL does not seem to work in Terminal of DR8 so we set T_DB="" in
8656 * its internal termcap... this works okay for tests which test *T_DB !=
8657 * NUL. It has the disadvantage that the user cannot use any :set t_*
8658 * command to get T_DB (back) to empty_option, only :set term=... will do
8659 * the trick...
8660 * Anyway, this hack will hopefully go away with the next OS release.
8661 * (Olaf Seibert)
8663 else if (row == 0 && T_DB == empty_option
8664 && (line_count == 1 || *T_CDL == NUL))
8665 #else
8666 else if (row == 0 && (
8667 #ifndef AMIGA
8668 /* On the Amiga, somehow '\n' on the last line doesn't always scroll
8669 * up, so use delete-line command */
8670 line_count == 1 ||
8671 #endif
8672 *T_CDL == NUL))
8673 #endif
8674 type = USE_NL;
8675 else if (*T_CDL != NUL && line_count > 1 && can_delete)
8676 type = USE_T_CDL;
8677 else if (can_clear(T_CE) && result_empty
8678 #ifdef FEAT_VERTSPLIT
8679 && (wp == NULL || wp->w_width == Columns)
8680 #endif
8682 type = USE_T_CE;
8683 else if (*T_DL != NUL && can_delete)
8684 type = USE_T_DL;
8685 else if (*T_CDL != NUL && can_delete)
8686 type = USE_T_CDL;
8687 else
8688 return FAIL;
8690 #ifdef FEAT_CLIPBOARD
8691 /* Remove a modeless selection when deleting lines halfway the screen or
8692 * not the full width of the screen. */
8693 if (off + row > 0
8694 # ifdef FEAT_VERTSPLIT
8695 || (wp != NULL && wp->w_width != Columns)
8696 # endif
8698 clip_clear_selection();
8699 else
8700 clip_scroll_selection(line_count);
8701 #endif
8703 #ifdef FEAT_GUI
8704 /* Don't update the GUI cursor here, ScreenLines[] is invalid until the
8705 * scrolling is actually carried out. */
8706 gui_dont_update_cursor();
8707 #endif
8709 if (*T_CCS != NUL) /* cursor relative to region */
8711 cursor_row = row;
8712 cursor_end = end;
8714 else
8716 cursor_row = row + off;
8717 cursor_end = end + off;
8721 * Now shift LineOffset[] line_count up to reflect the deleted lines.
8722 * Clear the inserted lines in ScreenLines[].
8724 row += off;
8725 end += off;
8726 for (i = 0; i < line_count; ++i)
8728 #ifdef FEAT_VERTSPLIT
8729 if (wp != NULL && wp->w_width != Columns)
8731 /* need to copy part of a line */
8732 j = row + i;
8733 while ((j += line_count) <= end - 1)
8734 linecopy(j - line_count, j, wp);
8735 j -= line_count;
8736 if (can_clear((char_u *)" "))
8737 lineclear(LineOffset[j] + wp->w_wincol, wp->w_width);
8738 else
8739 lineinvalid(LineOffset[j] + wp->w_wincol, wp->w_width);
8740 LineWraps[j] = FALSE;
8742 else
8743 #endif
8745 /* whole width, moving the line pointers is faster */
8746 j = row + i;
8747 temp = LineOffset[j];
8748 while ((j += line_count) <= end - 1)
8750 LineOffset[j - line_count] = LineOffset[j];
8751 LineWraps[j - line_count] = LineWraps[j];
8753 LineOffset[j - line_count] = temp;
8754 LineWraps[j - line_count] = FALSE;
8755 if (can_clear((char_u *)" "))
8756 lineclear(temp, (int)Columns);
8757 else
8758 lineinvalid(temp, (int)Columns);
8762 screen_stop_highlight();
8764 #ifdef FEAT_VERTSPLIT
8765 /* redraw the characters */
8766 if (type == USE_REDRAW)
8767 redraw_block(row, end, wp);
8768 else
8769 #endif
8770 if (type == USE_T_CD) /* delete the lines */
8772 windgoto(cursor_row, 0);
8773 out_str(T_CD);
8774 screen_start(); /* don't know where cursor is now */
8776 else if (type == USE_T_CDL)
8778 windgoto(cursor_row, 0);
8779 term_delete_lines(line_count);
8780 screen_start(); /* don't know where cursor is now */
8783 * Deleting lines at top of the screen or scroll region: Just scroll
8784 * the whole screen (scroll region) up by outputting newlines on the
8785 * last line.
8787 else if (type == USE_NL)
8789 windgoto(cursor_end - 1, 0);
8790 for (i = line_count; --i >= 0; )
8791 out_char('\n'); /* cursor will remain on same line */
8793 else
8795 for (i = line_count; --i >= 0; )
8797 if (type == USE_T_DL)
8799 windgoto(cursor_row, 0);
8800 out_str(T_DL); /* delete a line */
8802 else /* type == USE_T_CE */
8804 windgoto(cursor_row + i, 0);
8805 out_str(T_CE); /* erase a line */
8807 screen_start(); /* don't know where cursor is now */
8812 * If the 'db' flag is set, we need to clear the lines that have been
8813 * scrolled up at the bottom of the region.
8815 if (*T_DB && (type == USE_T_DL || type == USE_T_CDL))
8817 for (i = line_count; i > 0; --i)
8819 windgoto(cursor_end - i, 0);
8820 out_str(T_CE); /* erase a line */
8821 screen_start(); /* don't know where cursor is now */
8825 #ifdef FEAT_GUI
8826 gui_can_update_cursor();
8827 if (gui.in_use)
8828 out_flush(); /* always flush after a scroll */
8829 #endif
8831 return OK;
8835 * show the current mode and ruler
8837 * If clear_cmdline is TRUE, clear the rest of the cmdline.
8838 * If clear_cmdline is FALSE there may be a message there that needs to be
8839 * cleared only if a mode is shown.
8840 * Return the length of the message (0 if no message).
8843 showmode()
8845 int need_clear;
8846 int length = 0;
8847 int do_mode;
8848 int attr;
8849 int nwr_save;
8850 #ifdef FEAT_INS_EXPAND
8851 int sub_attr;
8852 #endif
8854 do_mode = ((p_smd && msg_silent == 0)
8855 && ((State & INSERT)
8856 || restart_edit
8857 #ifdef FEAT_VISUAL
8858 || VIsual_active
8859 #endif
8861 if (do_mode || Recording)
8864 * Don't show mode right now, when not redrawing or inside a mapping.
8865 * Call char_avail() only when we are going to show something, because
8866 * it takes a bit of time.
8868 if (!redrawing() || (char_avail() && !KeyTyped) || msg_silent != 0)
8870 redraw_cmdline = TRUE; /* show mode later */
8871 return 0;
8874 nwr_save = need_wait_return;
8876 /* wait a bit before overwriting an important message */
8877 check_for_delay(FALSE);
8879 /* if the cmdline is more than one line high, erase top lines */
8880 need_clear = clear_cmdline;
8881 if (clear_cmdline && cmdline_row < Rows - 1)
8882 msg_clr_cmdline(); /* will reset clear_cmdline */
8884 /* Position on the last line in the window, column 0 */
8885 msg_pos_mode();
8886 cursor_off();
8887 attr = hl_attr(HLF_CM); /* Highlight mode */
8888 if (do_mode)
8890 MSG_PUTS_ATTR("--", attr);
8891 #if defined(FEAT_XIM)
8892 # if 0 /* old version, changed by SungHyun Nam July 2008 */
8893 if (xic != NULL && im_get_status() && !p_imdisable
8894 && curbuf->b_p_iminsert == B_IMODE_IM)
8895 # else
8896 if (
8897 # ifdef HAVE_GTK2
8898 preedit_get_status()
8899 # else
8900 im_get_status()
8901 # endif
8903 # endif
8904 # ifdef HAVE_GTK2 /* most of the time, it's not XIM being used */
8905 MSG_PUTS_ATTR(" IM", attr);
8906 # else
8907 MSG_PUTS_ATTR(" XIM", attr);
8908 # endif
8909 #endif
8910 #if defined(FEAT_HANGULIN) && defined(FEAT_GUI)
8911 if (gui.in_use)
8913 if (hangul_input_state_get())
8914 MSG_PUTS_ATTR(" \307\321\261\333", attr); /* HANGUL */
8916 #endif
8917 #ifdef FEAT_INS_EXPAND
8918 if (edit_submode != NULL) /* CTRL-X in Insert mode */
8920 /* These messages can get long, avoid a wrap in a narrow
8921 * window. Prefer showing edit_submode_extra. */
8922 length = (Rows - msg_row) * Columns - 3;
8923 if (edit_submode_extra != NULL)
8924 length -= vim_strsize(edit_submode_extra);
8925 if (length > 0)
8927 if (edit_submode_pre != NULL)
8928 length -= vim_strsize(edit_submode_pre);
8929 if (length - vim_strsize(edit_submode) > 0)
8931 if (edit_submode_pre != NULL)
8932 msg_puts_attr(edit_submode_pre, attr);
8933 msg_puts_attr(edit_submode, attr);
8935 if (edit_submode_extra != NULL)
8937 MSG_PUTS_ATTR(" ", attr); /* add a space in between */
8938 if ((int)edit_submode_highl < (int)HLF_COUNT)
8939 sub_attr = hl_attr(edit_submode_highl);
8940 else
8941 sub_attr = attr;
8942 msg_puts_attr(edit_submode_extra, sub_attr);
8945 length = 0;
8947 else
8948 #endif
8950 #ifdef FEAT_VREPLACE
8951 if (State & VREPLACE_FLAG)
8952 MSG_PUTS_ATTR(_(" VREPLACE"), attr);
8953 else
8954 #endif
8955 if (State & REPLACE_FLAG)
8956 MSG_PUTS_ATTR(_(" REPLACE"), attr);
8957 else if (State & INSERT)
8959 #ifdef FEAT_RIGHTLEFT
8960 if (p_ri)
8961 MSG_PUTS_ATTR(_(" REVERSE"), attr);
8962 #endif
8963 MSG_PUTS_ATTR(_(" INSERT"), attr);
8965 else if (restart_edit == 'I')
8966 MSG_PUTS_ATTR(_(" (insert)"), attr);
8967 else if (restart_edit == 'R')
8968 MSG_PUTS_ATTR(_(" (replace)"), attr);
8969 else if (restart_edit == 'V')
8970 MSG_PUTS_ATTR(_(" (vreplace)"), attr);
8971 #ifdef FEAT_RIGHTLEFT
8972 if (p_hkmap)
8973 MSG_PUTS_ATTR(_(" Hebrew"), attr);
8974 # ifdef FEAT_FKMAP
8975 if (p_fkmap)
8976 MSG_PUTS_ATTR(farsi_text_5, attr);
8977 # endif
8978 #endif
8979 #ifdef FEAT_KEYMAP
8980 if (State & LANGMAP)
8982 # ifdef FEAT_ARABIC
8983 if (curwin->w_p_arab)
8984 MSG_PUTS_ATTR(_(" Arabic"), attr);
8985 else
8986 # endif
8987 MSG_PUTS_ATTR(_(" (lang)"), attr);
8989 #endif
8990 if ((State & INSERT) && p_paste)
8991 MSG_PUTS_ATTR(_(" (paste)"), attr);
8993 #ifdef FEAT_VISUAL
8994 if (VIsual_active)
8996 char *p;
8998 /* Don't concatenate separate words to avoid translation
8999 * problems. */
9000 switch ((VIsual_select ? 4 : 0)
9001 + (VIsual_mode == Ctrl_V) * 2
9002 + (VIsual_mode == 'V'))
9004 case 0: p = N_(" VISUAL"); break;
9005 case 1: p = N_(" VISUAL LINE"); break;
9006 case 2: p = N_(" VISUAL BLOCK"); break;
9007 case 4: p = N_(" SELECT"); break;
9008 case 5: p = N_(" SELECT LINE"); break;
9009 default: p = N_(" SELECT BLOCK"); break;
9011 MSG_PUTS_ATTR(_(p), attr);
9013 #endif
9014 MSG_PUTS_ATTR(" --", attr);
9017 need_clear = TRUE;
9019 if (Recording
9020 #ifdef FEAT_INS_EXPAND
9021 && edit_submode == NULL /* otherwise it gets too long */
9022 #endif
9025 MSG_PUTS_ATTR(_("recording"), attr);
9026 need_clear = TRUE;
9029 mode_displayed = TRUE;
9030 if (need_clear || clear_cmdline)
9031 msg_clr_eos();
9032 msg_didout = FALSE; /* overwrite this message */
9033 length = msg_col;
9034 msg_col = 0;
9035 need_wait_return = nwr_save; /* never ask for hit-return for this */
9037 else if (clear_cmdline && msg_silent == 0)
9038 /* Clear the whole command line. Will reset "clear_cmdline". */
9039 msg_clr_cmdline();
9041 #ifdef FEAT_CMDL_INFO
9042 # ifdef FEAT_VISUAL
9043 /* In Visual mode the size of the selected area must be redrawn. */
9044 if (VIsual_active)
9045 clear_showcmd();
9046 # endif
9048 /* If the last window has no status line, the ruler is after the mode
9049 * message and must be redrawn */
9050 if (redrawing()
9051 # ifdef FEAT_WINDOWS
9052 && lastwin->w_status_height == 0
9053 # endif
9055 win_redr_ruler(lastwin, TRUE);
9056 #endif
9057 redraw_cmdline = FALSE;
9058 clear_cmdline = FALSE;
9060 return length;
9064 * Position for a mode message.
9066 static void
9067 msg_pos_mode()
9069 msg_col = 0;
9070 msg_row = Rows - 1;
9074 * Delete mode message. Used when ESC is typed which is expected to end
9075 * Insert mode (but Insert mode didn't end yet!).
9076 * Caller should check "mode_displayed".
9078 void
9079 unshowmode(force)
9080 int force;
9083 * Don't delete it right now, when not redrawing or insided a mapping.
9085 if (!redrawing() || (!force && char_avail() && !KeyTyped))
9086 redraw_cmdline = TRUE; /* delete mode later */
9087 else
9089 msg_pos_mode();
9090 if (Recording)
9091 MSG_PUTS_ATTR(_("recording"), hl_attr(HLF_CM));
9092 msg_clr_eos();
9096 #if defined(FEAT_WINDOWS)
9098 * Draw the tab pages line at the top of the Vim window.
9100 static void
9101 draw_tabline()
9103 int tabcount = 0;
9104 tabpage_T *tp;
9105 int tabwidth;
9106 int col = 0;
9107 int scol = 0;
9108 int attr;
9109 win_T *wp;
9110 win_T *cwp;
9111 int wincount;
9112 int modified;
9113 int c;
9114 int len;
9115 int attr_sel = hl_attr(HLF_TPS);
9116 int attr_nosel = hl_attr(HLF_TP);
9117 int attr_fill = hl_attr(HLF_TPF);
9118 char_u *p;
9119 int room;
9120 int use_sep_chars = (t_colors < 8
9121 #ifdef FEAT_GUI
9122 && !gui.in_use
9123 #endif
9126 redraw_tabline = FALSE;
9128 #ifdef FEAT_GUI_TABLINE
9129 /* Take care of a GUI tabline. */
9130 if (gui_use_tabline())
9132 gui_update_tabline();
9133 return;
9135 #endif
9137 if (tabline_height() < 1)
9138 return;
9140 #if defined(FEAT_STL_OPT)
9142 /* Init TabPageIdxs[] to zero: Clicking outside of tabs has no effect. */
9143 for (scol = 0; scol < Columns; ++scol)
9144 TabPageIdxs[scol] = 0;
9146 /* Use the 'tabline' option if it's set. */
9147 if (*p_tal != NUL)
9149 int save_called_emsg = called_emsg;
9151 /* Check for an error. If there is one we would loop in redrawing the
9152 * screen. Avoid that by making 'tabline' empty. */
9153 called_emsg = FALSE;
9154 win_redr_custom(NULL, FALSE);
9155 if (called_emsg)
9156 set_string_option_direct((char_u *)"tabline", -1,
9157 (char_u *)"", OPT_FREE, SID_ERROR);
9158 called_emsg |= save_called_emsg;
9160 else
9161 #endif
9163 for (tp = first_tabpage; tp != NULL; tp = tp->tp_next)
9164 ++tabcount;
9166 tabwidth = (Columns - 1 + tabcount / 2) / tabcount;
9167 if (tabwidth < 6)
9168 tabwidth = 6;
9170 attr = attr_nosel;
9171 tabcount = 0;
9172 scol = 0;
9173 for (tp = first_tabpage; tp != NULL && col < Columns - 4;
9174 tp = tp->tp_next)
9176 scol = col;
9178 if (tp->tp_topframe == topframe)
9179 attr = attr_sel;
9180 if (use_sep_chars && col > 0)
9181 screen_putchar('|', 0, col++, attr);
9183 if (tp->tp_topframe != topframe)
9184 attr = attr_nosel;
9186 screen_putchar(' ', 0, col++, attr);
9188 if (tp == curtab)
9190 cwp = curwin;
9191 wp = firstwin;
9193 else
9195 cwp = tp->tp_curwin;
9196 wp = tp->tp_firstwin;
9199 modified = FALSE;
9200 for (wincount = 0; wp != NULL; wp = wp->w_next, ++wincount)
9201 if (bufIsChanged(wp->w_buffer))
9202 modified = TRUE;
9203 if (modified || wincount > 1)
9205 if (wincount > 1)
9207 vim_snprintf((char *)NameBuff, MAXPATHL, "%d", wincount);
9208 len = (int)STRLEN(NameBuff);
9209 if (col + len >= Columns - 3)
9210 break;
9211 screen_puts_len(NameBuff, len, 0, col,
9212 #if defined(FEAT_SYN_HL)
9213 hl_combine_attr(attr, hl_attr(HLF_T))
9214 #else
9215 attr
9216 #endif
9218 col += len;
9220 if (modified)
9221 screen_puts_len((char_u *)"+", 1, 0, col++, attr);
9222 screen_putchar(' ', 0, col++, attr);
9225 room = scol - col + tabwidth - 1;
9226 if (room > 0)
9228 /* Get buffer name in NameBuff[] */
9229 get_trans_bufname(cwp->w_buffer);
9230 shorten_dir(NameBuff);
9231 len = vim_strsize(NameBuff);
9232 p = NameBuff;
9233 #ifdef FEAT_MBYTE
9234 if (has_mbyte)
9235 while (len > room)
9237 len -= ptr2cells(p);
9238 mb_ptr_adv(p);
9240 else
9241 #endif
9242 if (len > room)
9244 p += len - room;
9245 len = room;
9247 if (len > Columns - col - 1)
9248 len = Columns - col - 1;
9250 screen_puts_len(p, (int)STRLEN(p), 0, col, attr);
9251 col += len;
9253 screen_putchar(' ', 0, col++, attr);
9255 /* Store the tab page number in TabPageIdxs[], so that
9256 * jump_to_mouse() knows where each one is. */
9257 ++tabcount;
9258 while (scol < col)
9259 TabPageIdxs[scol++] = tabcount;
9262 if (use_sep_chars)
9263 c = '_';
9264 else
9265 c = ' ';
9266 screen_fill(0, 1, col, (int)Columns, c, c, attr_fill);
9268 /* Put an "X" for closing the current tab if there are several. */
9269 if (first_tabpage->tp_next != NULL)
9271 screen_putchar('X', 0, (int)Columns - 1, attr_nosel);
9272 TabPageIdxs[Columns - 1] = -999;
9276 /* Reset the flag here again, in case evaluating 'tabline' causes it to be
9277 * set. */
9278 redraw_tabline = FALSE;
9282 * Get buffer name for "buf" into NameBuff[].
9283 * Takes care of special buffer names and translates special characters.
9285 void
9286 get_trans_bufname(buf)
9287 buf_T *buf;
9289 if (buf_spname(buf) != NULL)
9290 STRCPY(NameBuff, buf_spname(buf));
9291 else
9292 home_replace(buf, buf->b_fname, NameBuff, MAXPATHL, TRUE);
9293 trans_characters(NameBuff, MAXPATHL);
9295 #endif
9297 #if defined(FEAT_WINDOWS) || defined(FEAT_WILDMENU) || defined(FEAT_STL_OPT)
9299 * Get the character to use in a status line. Get its attributes in "*attr".
9301 static int
9302 fillchar_status(attr, is_curwin)
9303 int *attr;
9304 int is_curwin;
9306 int fill;
9307 if (is_curwin)
9309 *attr = hl_attr(HLF_S);
9310 fill = fill_stl;
9312 else
9314 *attr = hl_attr(HLF_SNC);
9315 fill = fill_stlnc;
9317 /* Use fill when there is highlighting, and highlighting of current
9318 * window differs, or the fillchars differ, or this is not the
9319 * current window */
9320 if (*attr != 0 && ((hl_attr(HLF_S) != hl_attr(HLF_SNC)
9321 || !is_curwin || firstwin == lastwin)
9322 || (fill_stl != fill_stlnc)))
9323 return fill;
9324 if (is_curwin)
9325 return '^';
9326 return '=';
9328 #endif
9330 #ifdef FEAT_VERTSPLIT
9332 * Get the character to use in a separator between vertically split windows.
9333 * Get its attributes in "*attr".
9335 static int
9336 fillchar_vsep(attr)
9337 int *attr;
9339 *attr = hl_attr(HLF_C);
9340 if (*attr == 0 && fill_vert == ' ')
9341 return '|';
9342 else
9343 return fill_vert;
9345 #endif
9348 * Return TRUE if redrawing should currently be done.
9351 redrawing()
9353 return (!RedrawingDisabled
9354 && !(p_lz && char_avail() && !KeyTyped && !do_redraw));
9358 * Return TRUE if printing messages should currently be done.
9361 messaging()
9363 return (!(p_lz && char_avail() && !KeyTyped));
9367 * Show current status info in ruler and various other places
9368 * If always is FALSE, only show ruler if position has changed.
9370 void
9371 showruler(always)
9372 int always;
9374 if (!always && !redrawing())
9375 return;
9376 #ifdef FEAT_INS_EXPAND
9377 if (pum_visible())
9379 # ifdef FEAT_WINDOWS
9380 /* Don't redraw right now, do it later. */
9381 curwin->w_redr_status = TRUE;
9382 # endif
9383 return;
9385 #endif
9386 #if defined(FEAT_STL_OPT) && defined(FEAT_WINDOWS)
9387 if ((*p_stl != NUL || *curwin->w_p_stl != NUL) && curwin->w_status_height)
9389 redraw_custum_statusline(curwin);
9391 else
9392 #endif
9393 #ifdef FEAT_CMDL_INFO
9394 win_redr_ruler(curwin, always);
9395 #endif
9397 #ifdef FEAT_TITLE
9398 if (need_maketitle
9399 # ifdef FEAT_STL_OPT
9400 || (p_icon && (stl_syntax & STL_IN_ICON))
9401 || (p_title && (stl_syntax & STL_IN_TITLE))
9402 # endif
9404 maketitle();
9405 #endif
9406 #ifdef FEAT_WINDOWS
9407 /* Redraw the tab pages line if needed. */
9408 if (redraw_tabline)
9409 draw_tabline();
9410 #endif
9413 #ifdef FEAT_CMDL_INFO
9414 static void
9415 win_redr_ruler(wp, always)
9416 win_T *wp;
9417 int always;
9419 char_u buffer[70];
9420 int row;
9421 int fillchar;
9422 int attr;
9423 int empty_line = FALSE;
9424 colnr_T virtcol;
9425 int i;
9426 int o;
9427 #ifdef FEAT_VERTSPLIT
9428 int this_ru_col;
9429 int off = 0;
9430 int width = Columns;
9431 # define WITH_OFF(x) x
9432 # define WITH_WIDTH(x) x
9433 #else
9434 # define WITH_OFF(x) 0
9435 # define WITH_WIDTH(x) Columns
9436 # define this_ru_col ru_col
9437 #endif
9439 /* If 'ruler' off or redrawing disabled, don't do anything */
9440 if (!p_ru)
9441 return;
9444 * Check if cursor.lnum is valid, since win_redr_ruler() may be called
9445 * after deleting lines, before cursor.lnum is corrected.
9447 if (wp->w_cursor.lnum > wp->w_buffer->b_ml.ml_line_count)
9448 return;
9450 #ifdef FEAT_INS_EXPAND
9451 /* Don't draw the ruler while doing insert-completion, it might overwrite
9452 * the (long) mode message. */
9453 # ifdef FEAT_WINDOWS
9454 if (wp == lastwin && lastwin->w_status_height == 0)
9455 # endif
9456 if (edit_submode != NULL)
9457 return;
9458 /* Don't draw the ruler when the popup menu is visible, it may overlap. */
9459 if (pum_visible())
9460 return;
9461 #endif
9463 #ifdef FEAT_STL_OPT
9464 if (*p_ruf)
9466 int save_called_emsg = called_emsg;
9468 called_emsg = FALSE;
9469 win_redr_custom(wp, TRUE);
9470 if (called_emsg)
9471 set_string_option_direct((char_u *)"rulerformat", -1,
9472 (char_u *)"", OPT_FREE, SID_ERROR);
9473 called_emsg |= save_called_emsg;
9474 return;
9476 #endif
9479 * Check if not in Insert mode and the line is empty (will show "0-1").
9481 if (!(State & INSERT)
9482 && *ml_get_buf(wp->w_buffer, wp->w_cursor.lnum, FALSE) == NUL)
9483 empty_line = TRUE;
9486 * Only draw the ruler when something changed.
9488 validate_virtcol_win(wp);
9489 if ( redraw_cmdline
9490 || always
9491 || wp->w_cursor.lnum != wp->w_ru_cursor.lnum
9492 || wp->w_cursor.col != wp->w_ru_cursor.col
9493 || wp->w_virtcol != wp->w_ru_virtcol
9494 #ifdef FEAT_VIRTUALEDIT
9495 || wp->w_cursor.coladd != wp->w_ru_cursor.coladd
9496 #endif
9497 || wp->w_topline != wp->w_ru_topline
9498 || wp->w_buffer->b_ml.ml_line_count != wp->w_ru_line_count
9499 #ifdef FEAT_DIFF
9500 || wp->w_topfill != wp->w_ru_topfill
9501 #endif
9502 || empty_line != wp->w_ru_empty)
9504 cursor_off();
9505 #ifdef FEAT_WINDOWS
9506 if (wp->w_status_height)
9508 row = W_WINROW(wp) + wp->w_height;
9509 fillchar = fillchar_status(&attr, wp == curwin);
9510 # ifdef FEAT_VERTSPLIT
9511 off = W_WINCOL(wp);
9512 width = W_WIDTH(wp);
9513 # endif
9515 else
9516 #endif
9518 row = Rows - 1;
9519 fillchar = ' ';
9520 attr = 0;
9521 #ifdef FEAT_VERTSPLIT
9522 width = Columns;
9523 off = 0;
9524 #endif
9527 /* In list mode virtcol needs to be recomputed */
9528 virtcol = wp->w_virtcol;
9529 if (wp->w_p_list && lcs_tab1 == NUL)
9531 wp->w_p_list = FALSE;
9532 getvvcol(wp, &wp->w_cursor, NULL, &virtcol, NULL);
9533 wp->w_p_list = TRUE;
9537 * Some sprintfs return the length, some return a pointer.
9538 * To avoid portability problems we use strlen() here.
9540 sprintf((char *)buffer, "%ld,",
9541 (wp->w_buffer->b_ml.ml_flags & ML_EMPTY)
9542 ? 0L
9543 : (long)(wp->w_cursor.lnum));
9544 col_print(buffer + STRLEN(buffer),
9545 empty_line ? 0 : (int)wp->w_cursor.col + 1,
9546 (int)virtcol + 1);
9549 * Add a "50%" if there is room for it.
9550 * On the last line, don't print in the last column (scrolls the
9551 * screen up on some terminals).
9553 i = (int)STRLEN(buffer);
9554 get_rel_pos(wp, buffer + i + 1);
9555 o = i + vim_strsize(buffer + i + 1);
9556 #ifdef FEAT_WINDOWS
9557 if (wp->w_status_height == 0) /* can't use last char of screen */
9558 #endif
9559 ++o;
9560 #ifdef FEAT_VERTSPLIT
9561 this_ru_col = ru_col - (Columns - width);
9562 if (this_ru_col < 0)
9563 this_ru_col = 0;
9564 #endif
9565 /* Never use more than half the window/screen width, leave the other
9566 * half for the filename. */
9567 if (this_ru_col < (WITH_WIDTH(width) + 1) / 2)
9568 this_ru_col = (WITH_WIDTH(width) + 1) / 2;
9569 if (this_ru_col + o < WITH_WIDTH(width))
9571 while (this_ru_col + o < WITH_WIDTH(width))
9573 #ifdef FEAT_MBYTE
9574 if (has_mbyte)
9575 i += (*mb_char2bytes)(fillchar, buffer + i);
9576 else
9577 #endif
9578 buffer[i++] = fillchar;
9579 ++o;
9581 get_rel_pos(wp, buffer + i);
9583 /* Truncate at window boundary. */
9584 #ifdef FEAT_MBYTE
9585 if (has_mbyte)
9587 o = 0;
9588 for (i = 0; buffer[i] != NUL; i += (*mb_ptr2len)(buffer + i))
9590 o += (*mb_ptr2cells)(buffer + i);
9591 if (this_ru_col + o > WITH_WIDTH(width))
9593 buffer[i] = NUL;
9594 break;
9598 else
9599 #endif
9600 if (this_ru_col + (int)STRLEN(buffer) > WITH_WIDTH(width))
9601 buffer[WITH_WIDTH(width) - this_ru_col] = NUL;
9603 screen_puts(buffer, row, this_ru_col + WITH_OFF(off), attr);
9604 i = redraw_cmdline;
9605 screen_fill(row, row + 1,
9606 this_ru_col + WITH_OFF(off) + (int)STRLEN(buffer),
9607 (int)(WITH_OFF(off) + WITH_WIDTH(width)),
9608 fillchar, fillchar, attr);
9609 /* don't redraw the cmdline because of showing the ruler */
9610 redraw_cmdline = i;
9611 wp->w_ru_cursor = wp->w_cursor;
9612 wp->w_ru_virtcol = wp->w_virtcol;
9613 wp->w_ru_empty = empty_line;
9614 wp->w_ru_topline = wp->w_topline;
9615 wp->w_ru_line_count = wp->w_buffer->b_ml.ml_line_count;
9616 #ifdef FEAT_DIFF
9617 wp->w_ru_topfill = wp->w_topfill;
9618 #endif
9621 #endif
9623 #if defined(FEAT_LINEBREAK) || defined(PROTO)
9625 * Return the width of the 'number' column.
9626 * Caller may need to check if 'number' is set.
9627 * Otherwise it depends on 'numberwidth' and the line count.
9630 number_width(wp)
9631 win_T *wp;
9633 int n;
9634 linenr_T lnum;
9636 lnum = wp->w_buffer->b_ml.ml_line_count;
9637 if (lnum == wp->w_nrwidth_line_count)
9638 return wp->w_nrwidth_width;
9639 wp->w_nrwidth_line_count = lnum;
9641 n = 0;
9644 lnum /= 10;
9645 ++n;
9646 } while (lnum > 0);
9648 /* 'numberwidth' gives the minimal width plus one */
9649 if (n < wp->w_p_nuw - 1)
9650 n = wp->w_p_nuw - 1;
9652 wp->w_nrwidth_width = n;
9653 return n;
9655 #endif