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[7.2.446] Crash in GUI when closing the last window in a tabpage. (ryo7000)
[vim_mainline.git] / src / window.c
blob1dccb5a7be70c598c6d5f9ba396e8655d931808a
1 /* vi:set ts=8 sts=4 sw=4:
2 *
3 * VIM - Vi IMproved by Bram Moolenaar
4 *
5 * Do ":help uganda" in Vim to read a list of people who contributed.
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 */
9
10 #include "vim.h"
11
12 static int path_is_url __ARGS((char_u *p));
13 #if defined(FEAT_WINDOWS) || defined(PROTO)
14 static void win_init __ARGS((win_T *newp, win_T *oldp, int flags));
15 static void win_init_some __ARGS((win_T *newp, win_T *oldp));
16 static void frame_comp_pos __ARGS((frame_T *topfrp, int *row, int *col));
17 static void frame_setheight __ARGS((frame_T *curfrp, int height));
18 #ifdef FEAT_VERTSPLIT
19 static void frame_setwidth __ARGS((frame_T *curfrp, int width));
20 #endif
21 static void win_exchange __ARGS((long));
22 static void win_rotate __ARGS((int, int));
23 static void win_totop __ARGS((int size, int flags));
24 static void win_equal_rec __ARGS((win_T *next_curwin, int current, frame_T *topfr, int dir, int col, int row, int width, int height));
25 static int last_window __ARGS((void));
26 static int one_window __ARGS((void));
27 static win_T *win_free_mem __ARGS((win_T *win, int *dirp, tabpage_T *tp));
28 static frame_T *win_altframe __ARGS((win_T *win, tabpage_T *tp));
29 static tabpage_T *alt_tabpage __ARGS((void));
30 static win_T *frame2win __ARGS((frame_T *frp));
31 static int frame_has_win __ARGS((frame_T *frp, win_T *wp));
32 static void frame_new_height __ARGS((frame_T *topfrp, int height, int topfirst, int wfh));
33 static int frame_fixed_height __ARGS((frame_T *frp));
34 #ifdef FEAT_VERTSPLIT
35 static int frame_fixed_width __ARGS((frame_T *frp));
36 static void frame_add_statusline __ARGS((frame_T *frp));
37 static void frame_new_width __ARGS((frame_T *topfrp, int width, int leftfirst, int wfw));
38 static void frame_add_vsep __ARGS((frame_T *frp));
39 static int frame_minwidth __ARGS((frame_T *topfrp, win_T *next_curwin));
40 static void frame_fix_width __ARGS((win_T *wp));
41 #endif
42 #endif
43 static int win_alloc_firstwin __ARGS((win_T *oldwin));
44 static void new_frame __ARGS((win_T *wp));
45 #if defined(FEAT_WINDOWS) || defined(PROTO)
46 static tabpage_T *alloc_tabpage __ARGS((void));
47 static int leave_tabpage __ARGS((buf_T *new_curbuf));
48 static void enter_tabpage __ARGS((tabpage_T *tp, buf_T *old_curbuf));
49 static void frame_fix_height __ARGS((win_T *wp));
50 static int frame_minheight __ARGS((frame_T *topfrp, win_T *next_curwin));
51 static void win_enter_ext __ARGS((win_T *wp, int undo_sync, int no_curwin));
52 static void win_free __ARGS((win_T *wp, tabpage_T *tp));
53 static void frame_append __ARGS((frame_T *after, frame_T *frp));
54 static void frame_insert __ARGS((frame_T *before, frame_T *frp));
55 static void frame_remove __ARGS((frame_T *frp));
56 #ifdef FEAT_VERTSPLIT
57 static void win_new_width __ARGS((win_T *wp, int width));
58 static void win_goto_ver __ARGS((int up, long count));
59 static void win_goto_hor __ARGS((int left, long count));
60 #endif
61 static void frame_add_height __ARGS((frame_T *frp, int n));
62 static void last_status_rec __ARGS((frame_T *fr, int statusline));
63
64 static void make_snapshot_rec __ARGS((frame_T *fr, frame_T **frp));
65 static void clear_snapshot __ARGS((tabpage_T *tp, int idx));
66 static void clear_snapshot_rec __ARGS((frame_T *fr));
67 static int check_snapshot_rec __ARGS((frame_T *sn, frame_T *fr));
68 static win_T *restore_snapshot_rec __ARGS((frame_T *sn, frame_T *fr));
69
70 #endif /* FEAT_WINDOWS */
71
72 static win_T *win_alloc __ARGS((win_T *after, int hidden));
73 static void win_new_height __ARGS((win_T *, int));
74
75 #define URL_SLASH 1 /* path_is_url() has found "://" */
76 #define URL_BACKSLASH 2 /* path_is_url() has found ":\\" */
77
78 #define NOWIN (win_T *)-1 /* non-existing window */
79
80 #ifdef FEAT_WINDOWS
81 # define ROWS_AVAIL (Rows - p_ch - tabline_height())
82 #else
83 # define ROWS_AVAIL (Rows - p_ch)
84 #endif
85
86 #if defined(FEAT_WINDOWS) || defined(PROTO)
87
88 static char *m_onlyone = N_("Already only one window");
89
90 /*
91 * all CTRL-W window commands are handled here, called from normal_cmd().
92 */
93 void
94 do_window(nchar, Prenum, xchar)
95 int nchar;
96 long Prenum;
97 int xchar; /* extra char from ":wincmd gx" or NUL */
98 {
99 long Prenum1;
100 win_T *wp;
101 #if defined(FEAT_SEARCHPATH) || defined(FEAT_FIND_ID)
102 char_u *ptr;
103 linenr_T lnum = -1;
104 #endif
105 #ifdef FEAT_FIND_ID
106 int type = FIND_DEFINE;
107 int len;
108 #endif
109 char_u cbuf[40];
110
111 if (Prenum == 0)
112 Prenum1 = 1;
113 else
114 Prenum1 = Prenum;
115
116 #ifdef FEAT_CMDWIN
117 # define CHECK_CMDWIN if (cmdwin_type != 0) { EMSG(_(e_cmdwin)); break; }
118 #else
119 # define CHECK_CMDWIN
120 #endif
121
122 switch (nchar)
123 {
124 /* split current window in two parts, horizontally */
125 case 'S':
126 case Ctrl_S:
127 case 's':
128 CHECK_CMDWIN
129 #ifdef FEAT_VISUAL
130 reset_VIsual_and_resel(); /* stop Visual mode */
131 #endif
132 #ifdef FEAT_QUICKFIX
133 /* When splitting the quickfix window open a new buffer in it,
134 * don't replicate the quickfix buffer. */
135 if (bt_quickfix(curbuf))
136 goto newwindow;
137 #endif
138 #ifdef FEAT_GUI
139 need_mouse_correct = TRUE;
140 #endif
141 win_split((int)Prenum, 0);
142 break;
143
144 #ifdef FEAT_VERTSPLIT
145 /* split current window in two parts, vertically */
146 case Ctrl_V:
147 case 'v':
148 CHECK_CMDWIN
149 # ifdef FEAT_VISUAL
150 reset_VIsual_and_resel(); /* stop Visual mode */
151 # endif
152 # ifdef FEAT_QUICKFIX
153 /* When splitting the quickfix window open a new buffer in it,
154 * don't replicate the quickfix buffer. */
155 if (bt_quickfix(curbuf))
156 goto newwindow;
157 # endif
158 # ifdef FEAT_GUI
159 need_mouse_correct = TRUE;
160 # endif
161 win_split((int)Prenum, WSP_VERT);
162 break;
163 #endif
164
165 /* split current window and edit alternate file */
166 case Ctrl_HAT:
167 case '^':
168 CHECK_CMDWIN
169 #ifdef FEAT_VISUAL
170 reset_VIsual_and_resel(); /* stop Visual mode */
171 #endif
172 STRCPY(cbuf, "split #");
173 if (Prenum)
174 vim_snprintf((char *)cbuf + 7, sizeof(cbuf) - 7,
175 "%ld", Prenum);
176 do_cmdline_cmd(cbuf);
177 break;
178
179 /* open new window */
180 case Ctrl_N:
181 case 'n':
182 CHECK_CMDWIN
183 #ifdef FEAT_VISUAL
184 reset_VIsual_and_resel(); /* stop Visual mode */
185 #endif
186 #ifdef FEAT_QUICKFIX
187 newwindow:
188 #endif
189 if (Prenum)
190 /* window height */
191 vim_snprintf((char *)cbuf, sizeof(cbuf) - 5, "%ld", Prenum);
192 else
193 cbuf[0] = NUL;
194 #if defined(FEAT_VERTSPLIT) && defined(FEAT_QUICKFIX)
195 if (nchar == 'v' || nchar == Ctrl_V)
196 STRCAT(cbuf, "v");
197 #endif
198 STRCAT(cbuf, "new");
199 do_cmdline_cmd(cbuf);
200 break;
201
202 /* quit current window */
203 case Ctrl_Q:
204 case 'q':
205 #ifdef FEAT_VISUAL
206 reset_VIsual_and_resel(); /* stop Visual mode */
207 #endif
208 do_cmdline_cmd((char_u *)"quit");
209 break;
210
211 /* close current window */
212 case Ctrl_C:
213 case 'c':
214 #ifdef FEAT_VISUAL
215 reset_VIsual_and_resel(); /* stop Visual mode */
216 #endif
217 do_cmdline_cmd((char_u *)"close");
218 break;
219
220 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
221 /* close preview window */
222 case Ctrl_Z:
223 case 'z':
224 CHECK_CMDWIN
225 #ifdef FEAT_VISUAL
226 reset_VIsual_and_resel(); /* stop Visual mode */
227 #endif
228 do_cmdline_cmd((char_u *)"pclose");
229 break;
230
231 /* cursor to preview window */
232 case 'P':
233 for (wp = firstwin; wp != NULL; wp = wp->w_next)
234 if (wp->w_p_pvw)
235 break;
236 if (wp == NULL)
237 EMSG(_("E441: There is no preview window"));
238 else
239 win_goto(wp);
240 break;
241 #endif
242
243 /* close all but current window */
244 case Ctrl_O:
245 case 'o':
246 CHECK_CMDWIN
247 #ifdef FEAT_VISUAL
248 reset_VIsual_and_resel(); /* stop Visual mode */
249 #endif
250 do_cmdline_cmd((char_u *)"only");
251 break;
252
253 /* cursor to next window with wrap around */
254 case Ctrl_W:
255 case 'w':
256 /* cursor to previous window with wrap around */
257 case 'W':
258 CHECK_CMDWIN
259 if (firstwin == lastwin && Prenum != 1) /* just one window */
260 beep_flush();
261 else
262 {
263 if (Prenum) /* go to specified window */
264 {
265 for (wp = firstwin; --Prenum > 0; )
266 {
267 if (wp->w_next == NULL)
268 break;
269 else
270 wp = wp->w_next;
271 }
272 }
273 else
274 {
275 if (nchar == 'W') /* go to previous window */
276 {
277 wp = curwin->w_prev;
278 if (wp == NULL)
279 wp = lastwin; /* wrap around */
280 }
281 else /* go to next window */
282 {
283 wp = curwin->w_next;
284 if (wp == NULL)
285 wp = firstwin; /* wrap around */
286 }
287 }
288 win_goto(wp);
289 }
290 break;
291
292 /* cursor to window below */
293 case 'j':
294 case K_DOWN:
295 case Ctrl_J:
296 CHECK_CMDWIN
297 #ifdef FEAT_VERTSPLIT
298 win_goto_ver(FALSE, Prenum1);
299 #else
300 for (wp = curwin; wp->w_next != NULL && Prenum1-- > 0;
301 wp = wp->w_next)
302 ;
303 win_goto(wp);
304 #endif
305 break;
306
307 /* cursor to window above */
308 case 'k':
309 case K_UP:
310 case Ctrl_K:
311 CHECK_CMDWIN
312 #ifdef FEAT_VERTSPLIT
313 win_goto_ver(TRUE, Prenum1);
314 #else
315 for (wp = curwin; wp->w_prev != NULL && Prenum1-- > 0;
316 wp = wp->w_prev)
317 ;
318 win_goto(wp);
319 #endif
320 break;
321
322 #ifdef FEAT_VERTSPLIT
323 /* cursor to left window */
324 case 'h':
325 case K_LEFT:
326 case Ctrl_H:
327 case K_BS:
328 CHECK_CMDWIN
329 win_goto_hor(TRUE, Prenum1);
330 break;
331
332 /* cursor to right window */
333 case 'l':
334 case K_RIGHT:
335 case Ctrl_L:
336 CHECK_CMDWIN
337 win_goto_hor(FALSE, Prenum1);
338 break;
339 #endif
340
341 /* move window to new tab page */
342 case 'T':
343 if (one_window())
344 MSG(_(m_onlyone));
345 else
346 {
347 tabpage_T *oldtab = curtab;
348 tabpage_T *newtab;
349
350 /* First create a new tab with the window, then go back to
351 * the old tab and close the window there. */
352 wp = curwin;
353 if (win_new_tabpage((int)Prenum) == OK
354 && valid_tabpage(oldtab))
355 {
356 newtab = curtab;
357 goto_tabpage_tp(oldtab);
358 if (curwin == wp)
359 win_close(curwin, FALSE);
360 if (valid_tabpage(newtab))
361 goto_tabpage_tp(newtab);
362 }
363 }
364 break;
365
366 /* cursor to top-left window */
367 case 't':
368 case Ctrl_T:
369 win_goto(firstwin);
370 break;
371
372 /* cursor to bottom-right window */
373 case 'b':
374 case Ctrl_B:
375 win_goto(lastwin);
376 break;
377
378 /* cursor to last accessed (previous) window */
379 case 'p':
380 case Ctrl_P:
381 if (prevwin == NULL)
382 beep_flush();
383 else
384 win_goto(prevwin);
385 break;
386
387 /* exchange current and next window */
388 case 'x':
389 case Ctrl_X:
390 CHECK_CMDWIN
391 win_exchange(Prenum);
392 break;
393
394 /* rotate windows downwards */
395 case Ctrl_R:
396 case 'r':
397 CHECK_CMDWIN
398 #ifdef FEAT_VISUAL
399 reset_VIsual_and_resel(); /* stop Visual mode */
400 #endif
401 win_rotate(FALSE, (int)Prenum1); /* downwards */
402 break;
403
404 /* rotate windows upwards */
405 case 'R':
406 CHECK_CMDWIN
407 #ifdef FEAT_VISUAL
408 reset_VIsual_and_resel(); /* stop Visual mode */
409 #endif
410 win_rotate(TRUE, (int)Prenum1); /* upwards */
411 break;
412
413 /* move window to the very top/bottom/left/right */
414 case 'K':
415 case 'J':
416 #ifdef FEAT_VERTSPLIT
417 case 'H':
418 case 'L':
419 #endif
420 CHECK_CMDWIN
421 win_totop((int)Prenum,
422 ((nchar == 'H' || nchar == 'L') ? WSP_VERT : 0)
423 | ((nchar == 'H' || nchar == 'K') ? WSP_TOP : WSP_BOT));
424 break;
425
426 /* make all windows the same height */
427 case '=':
428 #ifdef FEAT_GUI
429 need_mouse_correct = TRUE;
430 #endif
431 win_equal(NULL, FALSE, 'b');
432 break;
433
434 /* increase current window height */
435 case '+':
436 #ifdef FEAT_GUI
437 need_mouse_correct = TRUE;
438 #endif
439 win_setheight(curwin->w_height + (int)Prenum1);
440 break;
441
442 /* decrease current window height */
443 case '-':
444 #ifdef FEAT_GUI
445 need_mouse_correct = TRUE;
446 #endif
447 win_setheight(curwin->w_height - (int)Prenum1);
448 break;
449
450 /* set current window height */
451 case Ctrl__:
452 case '_':
453 #ifdef FEAT_GUI
454 need_mouse_correct = TRUE;
455 #endif
456 win_setheight(Prenum ? (int)Prenum : 9999);
457 break;
458
459 #ifdef FEAT_VERTSPLIT
460 /* increase current window width */
461 case '>':
462 #ifdef FEAT_GUI
463 need_mouse_correct = TRUE;
464 #endif
465 win_setwidth(curwin->w_width + (int)Prenum1);
466 break;
467
468 /* decrease current window width */
469 case '<':
470 #ifdef FEAT_GUI
471 need_mouse_correct = TRUE;
472 #endif
473 win_setwidth(curwin->w_width - (int)Prenum1);
474 break;
475
476 /* set current window width */
477 case '|':
478 #ifdef FEAT_GUI
479 need_mouse_correct = TRUE;
480 #endif
481 win_setwidth(Prenum != 0 ? (int)Prenum : 9999);
482 break;
483 #endif
484
485 /* jump to tag and split window if tag exists (in preview window) */
486 #if defined(FEAT_QUICKFIX)
487 case '}':
488 CHECK_CMDWIN
489 if (Prenum)
490 g_do_tagpreview = Prenum;
491 else
492 g_do_tagpreview = p_pvh;
493 /*FALLTHROUGH*/
494 #endif
495 case ']':
496 case Ctrl_RSB:
497 CHECK_CMDWIN
498 #ifdef FEAT_VISUAL
499 reset_VIsual_and_resel(); /* stop Visual mode */
500 #endif
501 if (Prenum)
502 postponed_split = Prenum;
503 else
504 postponed_split = -1;
505
506 /* Execute the command right here, required when
507 * "wincmd ]" was used in a function. */
508 do_nv_ident(Ctrl_RSB, NUL);
509 break;
510
511 #ifdef FEAT_SEARCHPATH
512 /* edit file name under cursor in a new window */
513 case 'f':
514 case 'F':
515 case Ctrl_F:
516 wingotofile:
517 CHECK_CMDWIN
518
519 ptr = grab_file_name(Prenum1, &lnum);
520 if (ptr != NULL)
521 {
522 # ifdef FEAT_GUI
523 need_mouse_correct = TRUE;
524 # endif
525 setpcmark();
526 if (win_split(0, 0) == OK)
527 {
528 # ifdef FEAT_SCROLLBIND
529 curwin->w_p_scb = FALSE;
530 # endif
531 (void)do_ecmd(0, ptr, NULL, NULL, ECMD_LASTL,
532 ECMD_HIDE, NULL);
533 if (nchar == 'F' && lnum >= 0)
534 {
535 curwin->w_cursor.lnum = lnum;
536 check_cursor_lnum();
537 beginline(BL_SOL | BL_FIX);
538 }
539 }
540 vim_free(ptr);
541 }
542 break;
543 #endif
544
545 #ifdef FEAT_FIND_ID
546 /* Go to the first occurrence of the identifier under cursor along path in a
547 * new window -- webb
548 */
549 case 'i': /* Go to any match */
550 case Ctrl_I:
551 type = FIND_ANY;
552 /* FALLTHROUGH */
553 case 'd': /* Go to definition, using 'define' */
554 case Ctrl_D:
555 CHECK_CMDWIN
556 if ((len = find_ident_under_cursor(&ptr, FIND_IDENT)) == 0)
557 break;
558 find_pattern_in_path(ptr, 0, len, TRUE,
559 Prenum == 0 ? TRUE : FALSE, type,
560 Prenum1, ACTION_SPLIT, (linenr_T)1, (linenr_T)MAXLNUM);
561 curwin->w_set_curswant = TRUE;
562 break;
563 #endif
564
565 case K_KENTER:
566 case CAR:
567 #if defined(FEAT_QUICKFIX)
568 /*
569 * In a quickfix window a <CR> jumps to the error under the
570 * cursor in a new window.
571 */
572 if (bt_quickfix(curbuf))
573 {
574 sprintf((char *)cbuf, "split +%ld%s",
575 (long)curwin->w_cursor.lnum,
576 (curwin->w_llist_ref == NULL) ? "cc" : "ll");
577 do_cmdline_cmd(cbuf);
578 }
579 #endif
580 break;
581
582
583 /* CTRL-W g extended commands */
584 case 'g':
585 case Ctrl_G:
586 CHECK_CMDWIN
587 #ifdef USE_ON_FLY_SCROLL
588 dont_scroll = TRUE; /* disallow scrolling here */
589 #endif
590 ++no_mapping;
591 ++allow_keys; /* no mapping for xchar, but allow key codes */
592 if (xchar == NUL)
593 xchar = plain_vgetc();
594 LANGMAP_ADJUST(xchar, TRUE);
595 --no_mapping;
596 --allow_keys;
597 #ifdef FEAT_CMDL_INFO
598 (void)add_to_showcmd(xchar);
599 #endif
600 switch (xchar)
601 {
602 #if defined(FEAT_QUICKFIX)
603 case '}':
604 xchar = Ctrl_RSB;
605 if (Prenum)
606 g_do_tagpreview = Prenum;
607 else
608 g_do_tagpreview = p_pvh;
609 /*FALLTHROUGH*/
610 #endif
611 case ']':
612 case Ctrl_RSB:
613 #ifdef FEAT_VISUAL
614 reset_VIsual_and_resel(); /* stop Visual mode */
615 #endif
616 if (Prenum)
617 postponed_split = Prenum;
618 else
619 postponed_split = -1;
620
621 /* Execute the command right here, required when
622 * "wincmd g}" was used in a function. */
623 do_nv_ident('g', xchar);
624 break;
625
626 #ifdef FEAT_SEARCHPATH
627 case 'f': /* CTRL-W gf: "gf" in a new tab page */
628 case 'F': /* CTRL-W gF: "gF" in a new tab page */
629 cmdmod.tab = tabpage_index(curtab) + 1;
630 nchar = xchar;
631 goto wingotofile;
632 #endif
633 default:
634 beep_flush();
635 break;
636 }
637 break;
638
639 default: beep_flush();
640 break;
641 }
642 }
643
644 /*
645 * split the current window, implements CTRL-W s and :split
646 *
647 * "size" is the height or width for the new window, 0 to use half of current
648 * height or width.
649 *
650 * "flags":
651 * WSP_ROOM: require enough room for new window
652 * WSP_VERT: vertical split.
653 * WSP_TOP: open window at the top-left of the shell (help window).
654 * WSP_BOT: open window at the bottom-right of the shell (quickfix window).
655 * WSP_HELP: creating the help window, keep layout snapshot
656 *
657 * return FAIL for failure, OK otherwise
658 */
659 int
660 win_split(size, flags)
661 int size;
662 int flags;
663 {
664 /* When the ":tab" modifier was used open a new tab page instead. */
665 if (may_open_tabpage() == OK)
666 return OK;
667
668 /* Add flags from ":vertical", ":topleft" and ":botright". */
669 flags |= cmdmod.split;
670 if ((flags & WSP_TOP) && (flags & WSP_BOT))
671 {
672 EMSG(_("E442: Can't split topleft and botright at the same time"));
673 return FAIL;
674 }
675
676 /* When creating the help window make a snapshot of the window layout.
677 * Otherwise clear the snapshot, it's now invalid. */
678 if (flags & WSP_HELP)
679 make_snapshot(SNAP_HELP_IDX);
680 else
681 clear_snapshot(curtab, SNAP_HELP_IDX);
682
683 return win_split_ins(size, flags, NULL, 0);
684 }
685
686 /*
687 * When "newwin" is NULL: split the current window in two.
688 * When "newwin" is not NULL: insert this window at the far
689 * top/left/right/bottom.
690 * return FAIL for failure, OK otherwise
691 */
692 int
693 win_split_ins(size, flags, newwin, dir)
694 int size;
695 int flags;
696 win_T *newwin;
697 int dir;
698 {
699 win_T *wp = newwin;
700 win_T *oldwin;
701 int new_size = size;
702 int i;
703 int need_status = 0;
704 int do_equal = FALSE;
705 int needed;
706 int available;
707 int oldwin_height = 0;
708 int layout;
709 frame_T *frp, *curfrp;
710 int before;
711
712 if (flags & WSP_TOP)
713 oldwin = firstwin;
714 else if (flags & WSP_BOT)
715 oldwin = lastwin;
716 else
717 oldwin = curwin;
718
719 /* add a status line when p_ls == 1 and splitting the first window */
720 if (lastwin == firstwin && p_ls == 1 && oldwin->w_status_height == 0)
721 {
722 if (oldwin->w_height <= p_wmh && newwin == NULL)
723 {
724 EMSG(_(e_noroom));
725 return FAIL;
726 }
727 need_status = STATUS_HEIGHT;
728 }
729
730 #ifdef FEAT_GUI
731 /* May be needed for the scrollbars that are going to change. */
732 if (gui.in_use)
733 out_flush();
734 #endif
735
736 #ifdef FEAT_VERTSPLIT
737 if (flags & WSP_VERT)
738 {
739 layout = FR_ROW;
740
741 /*
742 * Check if we are able to split the current window and compute its
743 * width.
744 */
745 needed = p_wmw + 1;
746 if (flags & WSP_ROOM)
747 needed += p_wiw - p_wmw;
748 if (p_ea || (flags & (WSP_BOT | WSP_TOP)))
749 {
750 available = topframe->fr_width;
751 needed += frame_minwidth(topframe, NULL);
752 }
753 else
754 available = oldwin->w_width;
755 if (available < needed && newwin == NULL)
756 {
757 EMSG(_(e_noroom));
758 return FAIL;
759 }
760 if (new_size == 0)
761 new_size = oldwin->w_width / 2;
762 if (new_size > oldwin->w_width - p_wmw - 1)
763 new_size = oldwin->w_width - p_wmw - 1;
764 if (new_size < p_wmw)
765 new_size = p_wmw;
766
767 /* if it doesn't fit in the current window, need win_equal() */
768 if (oldwin->w_width - new_size - 1 < p_wmw)
769 do_equal = TRUE;
770
771 /* We don't like to take lines for the new window from a
772 * 'winfixwidth' window. Take them from a window to the left or right
773 * instead, if possible. */
774 if (oldwin->w_p_wfw)
775 win_setwidth_win(oldwin->w_width + new_size, oldwin);
776
777 /* Only make all windows the same width if one of them (except oldwin)
778 * is wider than one of the split windows. */
779 if (!do_equal && p_ea && size == 0 && *p_ead != 'v'
780 && oldwin->w_frame->fr_parent != NULL)
781 {
782 frp = oldwin->w_frame->fr_parent->fr_child;
783 while (frp != NULL)
784 {
785 if (frp->fr_win != oldwin && frp->fr_win != NULL
786 && (frp->fr_win->w_width > new_size
787 || frp->fr_win->w_width > oldwin->w_width
788 - new_size - STATUS_HEIGHT))
789 {
790 do_equal = TRUE;
791 break;
792 }
793 frp = frp->fr_next;
794 }
795 }
796 }
797 else
798 #endif
799 {
800 layout = FR_COL;
801
802 /*
803 * Check if we are able to split the current window and compute its
804 * height.
805 */
806 needed = p_wmh + STATUS_HEIGHT + need_status;
807 if (flags & WSP_ROOM)
808 needed += p_wh - p_wmh;
809 if (p_ea || (flags & (WSP_BOT | WSP_TOP)))
810 {
811 available = topframe->fr_height;
812 needed += frame_minheight(topframe, NULL);
813 }
814 else
815 {
816 available = oldwin->w_height;
817 needed += p_wmh;
818 }
819 if (available < needed && newwin == NULL)
820 {
821 EMSG(_(e_noroom));
822 return FAIL;
823 }
824 oldwin_height = oldwin->w_height;
825 if (need_status)
826 {
827 oldwin->w_status_height = STATUS_HEIGHT;
828 oldwin_height -= STATUS_HEIGHT;
829 }
830 if (new_size == 0)
831 new_size = oldwin_height / 2;
832
833 if (new_size > oldwin_height - p_wmh - STATUS_HEIGHT)
834 new_size = oldwin_height - p_wmh - STATUS_HEIGHT;
835 if (new_size < p_wmh)
836 new_size = p_wmh;
837
838 /* if it doesn't fit in the current window, need win_equal() */
839 if (oldwin_height - new_size - STATUS_HEIGHT < p_wmh)
840 do_equal = TRUE;
841
842 /* We don't like to take lines for the new window from a
843 * 'winfixheight' window. Take them from a window above or below
844 * instead, if possible. */
845 if (oldwin->w_p_wfh)
846 {
847 win_setheight_win(oldwin->w_height + new_size + STATUS_HEIGHT,
848 oldwin);
849 oldwin_height = oldwin->w_height;
850 if (need_status)
851 oldwin_height -= STATUS_HEIGHT;
852 }
853
854 /* Only make all windows the same height if one of them (except oldwin)
855 * is higher than one of the split windows. */
856 if (!do_equal && p_ea && size == 0
857 #ifdef FEAT_VERTSPLIT
858 && *p_ead != 'h'
859 #endif
860 && oldwin->w_frame->fr_parent != NULL)
861 {
862 frp = oldwin->w_frame->fr_parent->fr_child;
863 while (frp != NULL)
864 {
865 if (frp->fr_win != oldwin && frp->fr_win != NULL
866 && (frp->fr_win->w_height > new_size
867 || frp->fr_win->w_height > oldwin_height - new_size
868 - STATUS_HEIGHT))
869 {
870 do_equal = TRUE;
871 break;
872 }
873 frp = frp->fr_next;
874 }
875 }
876 }
877
878 /*
879 * allocate new window structure and link it in the window list
880 */
881 if ((flags & WSP_TOP) == 0
882 && ((flags & WSP_BOT)
883 || (flags & WSP_BELOW)
884 || (!(flags & WSP_ABOVE)
885 && (
886 #ifdef FEAT_VERTSPLIT
887 (flags & WSP_VERT) ? p_spr :
888 #endif
889 p_sb))))
890 {
891 /* new window below/right of current one */
892 if (newwin == NULL)
893 wp = win_alloc(oldwin, FALSE);
894 else
895 win_append(oldwin, wp);
896 }
897 else
898 {
899 if (newwin == NULL)
900 wp = win_alloc(oldwin->w_prev, FALSE);
901 else
902 win_append(oldwin->w_prev, wp);
903 }
904
905 if (newwin == NULL)
906 {
907 if (wp == NULL)
908 return FAIL;
909
910 new_frame(wp);
911 if (wp->w_frame == NULL)
912 {
913 win_free(wp, NULL);
914 return FAIL;
915 }
916
917 /* make the contents of the new window the same as the current one */
918 win_init(wp, curwin, flags);
919 }
920
921 /*
922 * Reorganise the tree of frames to insert the new window.
923 */
924 if (flags & (WSP_TOP | WSP_BOT))
925 {
926 #ifdef FEAT_VERTSPLIT
927 if ((topframe->fr_layout == FR_COL && (flags & WSP_VERT) == 0)
928 || (topframe->fr_layout == FR_ROW && (flags & WSP_VERT) != 0))
929 #else
930 if (topframe->fr_layout == FR_COL)
931 #endif
932 {
933 curfrp = topframe->fr_child;
934 if (flags & WSP_BOT)
935 while (curfrp->fr_next != NULL)
936 curfrp = curfrp->fr_next;
937 }
938 else
939 curfrp = topframe;
940 before = (flags & WSP_TOP);
941 }
942 else
943 {
944 curfrp = oldwin->w_frame;
945 if (flags & WSP_BELOW)
946 before = FALSE;
947 else if (flags & WSP_ABOVE)
948 before = TRUE;
949 else
950 #ifdef FEAT_VERTSPLIT
951 if (flags & WSP_VERT)
952 before = !p_spr;
953 else
954 #endif
955 before = !p_sb;
956 }
957 if (curfrp->fr_parent == NULL || curfrp->fr_parent->fr_layout != layout)
958 {
959 /* Need to create a new frame in the tree to make a branch. */
960 frp = (frame_T *)alloc_clear((unsigned)sizeof(frame_T));
961 *frp = *curfrp;
962 curfrp->fr_layout = layout;
963 frp->fr_parent = curfrp;
964 frp->fr_next = NULL;
965 frp->fr_prev = NULL;
966 curfrp->fr_child = frp;
967 curfrp->fr_win = NULL;
968 curfrp = frp;
969 if (frp->fr_win != NULL)
970 oldwin->w_frame = frp;
971 else
972 for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
973 frp->fr_parent = curfrp;
974 }
975
976 if (newwin == NULL)
977 frp = wp->w_frame;
978 else
979 frp = newwin->w_frame;
980 frp->fr_parent = curfrp->fr_parent;
981
982 /* Insert the new frame at the right place in the frame list. */
983 if (before)
984 frame_insert(curfrp, frp);
985 else
986 frame_append(curfrp, frp);
987
988 #ifdef FEAT_VERTSPLIT
989 if (flags & WSP_VERT)
990 {
991 wp->w_p_scr = curwin->w_p_scr;
992 if (need_status)
993 {
994 win_new_height(oldwin, oldwin->w_height - 1);
995 oldwin->w_status_height = need_status;
996 }
997 if (flags & (WSP_TOP | WSP_BOT))
998 {
999 /* set height and row of new window to full height */
1000 wp->w_winrow = tabline_height();
1001 win_new_height(wp, curfrp->fr_height - (p_ls > 0));
1002 wp->w_status_height = (p_ls > 0);
1003 }
1004 else
1005 {
1006 /* height and row of new window is same as current window */
1007 wp->w_winrow = oldwin->w_winrow;
1008 win_new_height(wp, oldwin->w_height);
1009 wp->w_status_height = oldwin->w_status_height;
1010 }
1011 frp->fr_height = curfrp->fr_height;
1012
1013 /* "new_size" of the current window goes to the new window, use
1014 * one column for the vertical separator */
1015 win_new_width(wp, new_size);
1016 if (before)
1017 wp->w_vsep_width = 1;
1018 else
1019 {
1020 wp->w_vsep_width = oldwin->w_vsep_width;
1021 oldwin->w_vsep_width = 1;
1022 }
1023 if (flags & (WSP_TOP | WSP_BOT))
1024 {
1025 if (flags & WSP_BOT)
1026 frame_add_vsep(curfrp);
1027 /* Set width of neighbor frame */
1028 frame_new_width(curfrp, curfrp->fr_width
1029 - (new_size + ((flags & WSP_TOP) != 0)), flags & WSP_TOP,
1030 FALSE);
1031 }
1032 else
1033 win_new_width(oldwin, oldwin->w_width - (new_size + 1));
1034 if (before) /* new window left of current one */
1035 {
1036 wp->w_wincol = oldwin->w_wincol;
1037 oldwin->w_wincol += new_size + 1;
1038 }
1039 else /* new window right of current one */
1040 wp->w_wincol = oldwin->w_wincol + oldwin->w_width + 1;
1041 frame_fix_width(oldwin);
1042 frame_fix_width(wp);
1043 }
1044 else
1045 #endif
1046 {
1047 /* width and column of new window is same as current window */
1048 #ifdef FEAT_VERTSPLIT
1049 if (flags & (WSP_TOP | WSP_BOT))
1050 {
1051 wp->w_wincol = 0;
1052 win_new_width(wp, Columns);
1053 wp->w_vsep_width = 0;
1054 }
1055 else
1056 {
1057 wp->w_wincol = oldwin->w_wincol;
1058 win_new_width(wp, oldwin->w_width);
1059 wp->w_vsep_width = oldwin->w_vsep_width;
1060 }
1061 frp->fr_width = curfrp->fr_width;
1062 #endif
1063
1064 /* "new_size" of the current window goes to the new window, use
1065 * one row for the status line */
1066 win_new_height(wp, new_size);
1067 if (flags & (WSP_TOP | WSP_BOT))
1068 frame_new_height(curfrp, curfrp->fr_height
1069 - (new_size + STATUS_HEIGHT), flags & WSP_TOP, FALSE);
1070 else
1071 win_new_height(oldwin, oldwin_height - (new_size + STATUS_HEIGHT));
1072 if (before) /* new window above current one */
1073 {
1074 wp->w_winrow = oldwin->w_winrow;
1075 wp->w_status_height = STATUS_HEIGHT;
1076 oldwin->w_winrow += wp->w_height + STATUS_HEIGHT;
1077 }
1078 else /* new window below current one */
1079 {
1080 wp->w_winrow = oldwin->w_winrow + oldwin->w_height + STATUS_HEIGHT;
1081 wp->w_status_height = oldwin->w_status_height;
1082 oldwin->w_status_height = STATUS_HEIGHT;
1083 }
1084 #ifdef FEAT_VERTSPLIT
1085 if (flags & WSP_BOT)
1086 frame_add_statusline(curfrp);
1087 #endif
1088 frame_fix_height(wp);
1089 frame_fix_height(oldwin);
1090 }
1091
1092 if (flags & (WSP_TOP | WSP_BOT))
1093 (void)win_comp_pos();
1094
1095 /*
1096 * Both windows need redrawing
1097 */
1098 redraw_win_later(wp, NOT_VALID);
1099 wp->w_redr_status = TRUE;
1100 redraw_win_later(oldwin, NOT_VALID);
1101 oldwin->w_redr_status = TRUE;
1102
1103 if (need_status)
1104 {
1105 msg_row = Rows - 1;
1106 msg_col = sc_col;
1107 msg_clr_eos_force(); /* Old command/ruler may still be there */
1108 comp_col();
1109 msg_row = Rows - 1;
1110 msg_col = 0; /* put position back at start of line */
1111 }
1112
1113 /*
1114 * equalize the window sizes.
1115 */
1116 if (do_equal || dir != 0)
1117 win_equal(wp, TRUE,
1118 #ifdef FEAT_VERTSPLIT
1119 (flags & WSP_VERT) ? (dir == 'v' ? 'b' : 'h')
1120 : dir == 'h' ? 'b' :
1121 #endif
1122 'v');
1123
1124 /* Don't change the window height/width to 'winheight' / 'winwidth' if a
1125 * size was given. */
1126 #ifdef FEAT_VERTSPLIT
1127 if (flags & WSP_VERT)
1128 {
1129 i = p_wiw;
1130 if (size != 0)
1131 p_wiw = size;
1132
1133 # ifdef FEAT_GUI
1134 /* When 'guioptions' includes 'L' or 'R' may have to add scrollbars. */
1135 if (gui.in_use)
1136 gui_init_which_components(NULL);
1137 # endif
1138 }
1139 else
1140 #endif
1141 {
1142 i = p_wh;
1143 if (size != 0)
1144 p_wh = size;
1145 }
1146
1147 /*
1148 * make the new window the current window
1149 */
1150 win_enter(wp, FALSE);
1151 #ifdef FEAT_VERTSPLIT
1152 if (flags & WSP_VERT)
1153 p_wiw = i;
1154 else
1155 #endif
1156 p_wh = i;
1157
1158 return OK;
1159 }
1160
1161
1162 /*
1163 * Initialize window "newp" from window "oldp".
1164 * Used when splitting a window and when creating a new tab page.
1165 * The windows will both edit the same buffer.
1166 * WSP_NEWLOC may be specified in flags to prevent the location list from
1167 * being copied.
1168 */
1169 static void
1170 win_init(newp, oldp, flags)
1171 win_T *newp;
1172 win_T *oldp;
1173 int flags UNUSED;
1174 {
1175 int i;
1176
1177 newp->w_buffer = oldp->w_buffer;
1178 oldp->w_buffer->b_nwindows++;
1179 newp->w_cursor = oldp->w_cursor;
1180 newp->w_valid = 0;
1181 newp->w_curswant = oldp->w_curswant;
1182 newp->w_set_curswant = oldp->w_set_curswant;
1183 newp->w_topline = oldp->w_topline;
1184 #ifdef FEAT_DIFF
1185 newp->w_topfill = oldp->w_topfill;
1186 #endif
1187 newp->w_leftcol = oldp->w_leftcol;
1188 newp->w_pcmark = oldp->w_pcmark;
1189 newp->w_prev_pcmark = oldp->w_prev_pcmark;
1190 newp->w_alt_fnum = oldp->w_alt_fnum;
1191 newp->w_wrow = oldp->w_wrow;
1192 newp->w_fraction = oldp->w_fraction;
1193 newp->w_prev_fraction_row = oldp->w_prev_fraction_row;
1194 #ifdef FEAT_JUMPLIST
1195 copy_jumplist(oldp, newp);
1196 #endif
1197 #ifdef FEAT_QUICKFIX
1198 if (flags & WSP_NEWLOC)
1199 {
1200 /* Don't copy the location list. */
1201 newp->w_llist = NULL;
1202 newp->w_llist_ref = NULL;
1203 }
1204 else
1205 copy_loclist(oldp, newp);
1206 #endif
1207 if (oldp->w_localdir != NULL)
1208 newp->w_localdir = vim_strsave(oldp->w_localdir);
1209
1210 /* copy tagstack and folds */
1211 for (i = 0; i < oldp->w_tagstacklen; i++)
1212 {
1213 newp->w_tagstack[i] = oldp->w_tagstack[i];
1214 if (newp->w_tagstack[i].tagname != NULL)
1215 newp->w_tagstack[i].tagname =
1216 vim_strsave(newp->w_tagstack[i].tagname);
1217 }
1218 newp->w_tagstackidx = oldp->w_tagstackidx;
1219 newp->w_tagstacklen = oldp->w_tagstacklen;
1220 # ifdef FEAT_FOLDING
1221 copyFoldingState(oldp, newp);
1222 # endif
1223
1224 win_init_some(newp, oldp);
1225 }
1226
1227 /*
1228 * Initialize window "newp" from window"old".
1229 * Only the essential things are copied.
1230 */
1231 static void
1232 win_init_some(newp, oldp)
1233 win_T *newp;
1234 win_T *oldp;
1235 {
1236 /* Use the same argument list. */
1237 newp->w_alist = oldp->w_alist;
1238 ++newp->w_alist->al_refcount;
1239 newp->w_arg_idx = oldp->w_arg_idx;
1240
1241 /* copy options from existing window */
1242 win_copy_options(oldp, newp);
1243 }
1244
1245 #endif /* FEAT_WINDOWS */
1246
1247 #if defined(FEAT_WINDOWS) || defined(PROTO)
1248 /*
1249 * Check if "win" is a pointer to an existing window.
1250 */
1251 int
1252 win_valid(win)
1253 win_T *win;
1254 {
1255 win_T *wp;
1256
1257 if (win == NULL)
1258 return FALSE;
1259 for (wp = firstwin; wp != NULL; wp = wp->w_next)
1260 if (wp == win)
1261 return TRUE;
1262 return FALSE;
1263 }
1264
1265 /*
1266 * Return the number of windows.
1267 */
1268 int
1269 win_count()
1270 {
1271 win_T *wp;
1272 int count = 0;
1273
1274 for (wp = firstwin; wp != NULL; wp = wp->w_next)
1275 ++count;
1276 return count;
1277 }
1278
1279 /*
1280 * Make "count" windows on the screen.
1281 * Return actual number of windows on the screen.
1282 * Must be called when there is just one window, filling the whole screen
1283 * (excluding the command line).
1284 */
1285 int
1286 make_windows(count, vertical)
1287 int count;
1288 int vertical UNUSED; /* split windows vertically if TRUE */
1289 {
1290 int maxcount;
1291 int todo;
1292
1293 #ifdef FEAT_VERTSPLIT
1294 if (vertical)
1295 {
1296 /* Each windows needs at least 'winminwidth' lines and a separator
1297 * column. */
1298 maxcount = (curwin->w_width + curwin->w_vsep_width
1299 - (p_wiw - p_wmw)) / (p_wmw + 1);
1300 }
1301 else
1302 #endif
1303 {
1304 /* Each window needs at least 'winminheight' lines and a status line. */
1305 maxcount = (curwin->w_height + curwin->w_status_height
1306 - (p_wh - p_wmh)) / (p_wmh + STATUS_HEIGHT);
1307 }
1308
1309 if (maxcount < 2)
1310 maxcount = 2;
1311 if (count > maxcount)
1312 count = maxcount;
1313
1314 /*
1315 * add status line now, otherwise first window will be too big
1316 */
1317 if (count > 1)
1318 last_status(TRUE);
1319
1320 #ifdef FEAT_AUTOCMD
1321 /*
1322 * Don't execute autocommands while creating the windows. Must do that
1323 * when putting the buffers in the windows.
1324 */
1325 block_autocmds();
1326 #endif
1327
1328 /* todo is number of windows left to create */
1329 for (todo = count - 1; todo > 0; --todo)
1330 #ifdef FEAT_VERTSPLIT
1331 if (vertical)
1332 {
1333 if (win_split(curwin->w_width - (curwin->w_width - todo)
1334 / (todo + 1) - 1, WSP_VERT | WSP_ABOVE) == FAIL)
1335 break;
1336 }
1337 else
1338 #endif
1339 {
1340 if (win_split(curwin->w_height - (curwin->w_height - todo
1341 * STATUS_HEIGHT) / (todo + 1)
1342 - STATUS_HEIGHT, WSP_ABOVE) == FAIL)
1343 break;
1344 }
1345
1346 #ifdef FEAT_AUTOCMD
1347 unblock_autocmds();
1348 #endif
1349
1350 /* return actual number of windows */
1351 return (count - todo);
1352 }
1353
1354 /*
1355 * Exchange current and next window
1356 */
1357 static void
1358 win_exchange(Prenum)
1359 long Prenum;
1360 {
1361 frame_T *frp;
1362 frame_T *frp2;
1363 win_T *wp;
1364 win_T *wp2;
1365 int temp;
1366
1367 if (lastwin == firstwin) /* just one window */
1368 {
1369 beep_flush();
1370 return;
1371 }
1372
1373 #ifdef FEAT_GUI
1374 need_mouse_correct = TRUE;
1375 #endif
1376
1377 /*
1378 * find window to exchange with
1379 */
1380 if (Prenum)
1381 {
1382 frp = curwin->w_frame->fr_parent->fr_child;
1383 while (frp != NULL && --Prenum > 0)
1384 frp = frp->fr_next;
1385 }
1386 else if (curwin->w_frame->fr_next != NULL) /* Swap with next */
1387 frp = curwin->w_frame->fr_next;
1388 else /* Swap last window in row/col with previous */
1389 frp = curwin->w_frame->fr_prev;
1390
1391 /* We can only exchange a window with another window, not with a frame
1392 * containing windows. */
1393 if (frp == NULL || frp->fr_win == NULL || frp->fr_win == curwin)
1394 return;
1395 wp = frp->fr_win;
1396
1397 /*
1398 * 1. remove curwin from the list. Remember after which window it was in wp2
1399 * 2. insert curwin before wp in the list
1400 * if wp != wp2
1401 * 3. remove wp from the list
1402 * 4. insert wp after wp2
1403 * 5. exchange the status line height and vsep width.
1404 */
1405 wp2 = curwin->w_prev;
1406 frp2 = curwin->w_frame->fr_prev;
1407 if (wp->w_prev != curwin)
1408 {
1409 win_remove(curwin, NULL);
1410 frame_remove(curwin->w_frame);
1411 win_append(wp->w_prev, curwin);
1412 frame_insert(frp, curwin->w_frame);
1413 }
1414 if (wp != wp2)
1415 {
1416 win_remove(wp, NULL);
1417 frame_remove(wp->w_frame);
1418 win_append(wp2, wp);
1419 if (frp2 == NULL)
1420 frame_insert(wp->w_frame->fr_parent->fr_child, wp->w_frame);
1421 else
1422 frame_append(frp2, wp->w_frame);
1423 }
1424 temp = curwin->w_status_height;
1425 curwin->w_status_height = wp->w_status_height;
1426 wp->w_status_height = temp;
1427 #ifdef FEAT_VERTSPLIT
1428 temp = curwin->w_vsep_width;
1429 curwin->w_vsep_width = wp->w_vsep_width;
1430 wp->w_vsep_width = temp;
1431
1432 /* If the windows are not in the same frame, exchange the sizes to avoid
1433 * messing up the window layout. Otherwise fix the frame sizes. */
1434 if (curwin->w_frame->fr_parent != wp->w_frame->fr_parent)
1435 {
1436 temp = curwin->w_height;
1437 curwin->w_height = wp->w_height;
1438 wp->w_height = temp;
1439 temp = curwin->w_width;
1440 curwin->w_width = wp->w_width;
1441 wp->w_width = temp;
1442 }
1443 else
1444 {
1445 frame_fix_height(curwin);
1446 frame_fix_height(wp);
1447 frame_fix_width(curwin);
1448 frame_fix_width(wp);
1449 }
1450 #endif
1451
1452 (void)win_comp_pos(); /* recompute window positions */
1453
1454 win_enter(wp, TRUE);
1455 redraw_later(CLEAR);
1456 }
1457
1458 /*
1459 * rotate windows: if upwards TRUE the second window becomes the first one
1460 * if upwards FALSE the first window becomes the second one
1461 */
1462 static void
1463 win_rotate(upwards, count)
1464 int upwards;
1465 int count;
1466 {
1467 win_T *wp1;
1468 win_T *wp2;
1469 frame_T *frp;
1470 int n;
1471
1472 if (firstwin == lastwin) /* nothing to do */
1473 {
1474 beep_flush();
1475 return;
1476 }
1477
1478 #ifdef FEAT_GUI
1479 need_mouse_correct = TRUE;
1480 #endif
1481
1482 #ifdef FEAT_VERTSPLIT
1483 /* Check if all frames in this row/col have one window. */
1484 for (frp = curwin->w_frame->fr_parent->fr_child; frp != NULL;
1485 frp = frp->fr_next)
1486 if (frp->fr_win == NULL)
1487 {
1488 EMSG(_("E443: Cannot rotate when another window is split"));
1489 return;
1490 }
1491 #endif
1492
1493 while (count--)
1494 {
1495 if (upwards) /* first window becomes last window */
1496 {
1497 /* remove first window/frame from the list */
1498 frp = curwin->w_frame->fr_parent->fr_child;
1499 wp1 = frp->fr_win;
1500 win_remove(wp1, NULL);
1501 frame_remove(frp);
1502
1503 /* find last frame and append removed window/frame after it */
1504 for ( ; frp->fr_next != NULL; frp = frp->fr_next)
1505 ;
1506 win_append(frp->fr_win, wp1);
1507 frame_append(frp, wp1->w_frame);
1508
1509 wp2 = frp->fr_win; /* previously last window */
1510 }
1511 else /* last window becomes first window */
1512 {
1513 /* find last window/frame in the list and remove it */
1514 for (frp = curwin->w_frame; frp->fr_next != NULL;
1515 frp = frp->fr_next)
1516 ;
1517 wp1 = frp->fr_win;
1518 wp2 = wp1->w_prev; /* will become last window */
1519 win_remove(wp1, NULL);
1520 frame_remove(frp);
1521
1522 /* append the removed window/frame before the first in the list */
1523 win_append(frp->fr_parent->fr_child->fr_win->w_prev, wp1);
1524 frame_insert(frp->fr_parent->fr_child, frp);
1525 }
1526
1527 /* exchange status height and vsep width of old and new last window */
1528 n = wp2->w_status_height;
1529 wp2->w_status_height = wp1->w_status_height;
1530 wp1->w_status_height = n;
1531 frame_fix_height(wp1);
1532 frame_fix_height(wp2);
1533 #ifdef FEAT_VERTSPLIT
1534 n = wp2->w_vsep_width;
1535 wp2->w_vsep_width = wp1->w_vsep_width;
1536 wp1->w_vsep_width = n;
1537 frame_fix_width(wp1);
1538 frame_fix_width(wp2);
1539 #endif
1540
1541 /* recompute w_winrow and w_wincol for all windows */
1542 (void)win_comp_pos();
1543 }
1544
1545 redraw_later(CLEAR);
1546 }
1547
1548 /*
1549 * Move the current window to the very top/bottom/left/right of the screen.
1550 */
1551 static void
1552 win_totop(size, flags)
1553 int size;
1554 int flags;
1555 {
1556 int dir;
1557 int height = curwin->w_height;
1558
1559 if (lastwin == firstwin)
1560 {
1561 beep_flush();
1562 return;
1563 }
1564
1565 /* Remove the window and frame from the tree of frames. */
1566 (void)winframe_remove(curwin, &dir, NULL);
1567 win_remove(curwin, NULL);
1568 last_status(FALSE); /* may need to remove last status line */
1569 (void)win_comp_pos(); /* recompute window positions */
1570
1571 /* Split a window on the desired side and put the window there. */
1572 (void)win_split_ins(size, flags, curwin, dir);
1573 if (!(flags & WSP_VERT))
1574 {
1575 win_setheight(height);
1576 if (p_ea)
1577 win_equal(curwin, TRUE, 'v');
1578 }
1579
1580 #if defined(FEAT_GUI) && defined(FEAT_VERTSPLIT)
1581 /* When 'guioptions' includes 'L' or 'R' may have to remove or add
1582 * scrollbars. Have to update them anyway. */
1583 gui_may_update_scrollbars();
1584 #endif
1585 }
1586
1587 /*
1588 * Move window "win1" to below/right of "win2" and make "win1" the current
1589 * window. Only works within the same frame!
1590 */
1591 void
1592 win_move_after(win1, win2)
1593 win_T *win1, *win2;
1594 {
1595 int height;
1596
1597 /* check if the arguments are reasonable */
1598 if (win1 == win2)
1599 return;
1600
1601 /* check if there is something to do */
1602 if (win2->w_next != win1)
1603 {
1604 /* may need move the status line/vertical separator of the last window
1605 * */
1606 if (win1 == lastwin)
1607 {
1608 height = win1->w_prev->w_status_height;
1609 win1->w_prev->w_status_height = win1->w_status_height;
1610 win1->w_status_height = height;
1611 #ifdef FEAT_VERTSPLIT
1612 if (win1->w_prev->w_vsep_width == 1)
1613 {
1614 /* Remove the vertical separator from the last-but-one window,
1615 * add it to the last window. Adjust the frame widths. */
1616 win1->w_prev->w_vsep_width = 0;
1617 win1->w_prev->w_frame->fr_width -= 1;
1618 win1->w_vsep_width = 1;
1619 win1->w_frame->fr_width += 1;
1620 }
1621 #endif
1622 }
1623 else if (win2 == lastwin)
1624 {
1625 height = win1->w_status_height;
1626 win1->w_status_height = win2->w_status_height;
1627 win2->w_status_height = height;
1628 #ifdef FEAT_VERTSPLIT
1629 if (win1->w_vsep_width == 1)
1630 {
1631 /* Remove the vertical separator from win1, add it to the last
1632 * window, win2. Adjust the frame widths. */
1633 win2->w_vsep_width = 1;
1634 win2->w_frame->fr_width += 1;
1635 win1->w_vsep_width = 0;
1636 win1->w_frame->fr_width -= 1;
1637 }
1638 #endif
1639 }
1640 win_remove(win1, NULL);
1641 frame_remove(win1->w_frame);
1642 win_append(win2, win1);
1643 frame_append(win2->w_frame, win1->w_frame);
1644
1645 (void)win_comp_pos(); /* recompute w_winrow for all windows */
1646 redraw_later(NOT_VALID);
1647 }
1648 win_enter(win1, FALSE);
1649 }
1650
1651 /*
1652 * Make all windows the same height.
1653 * 'next_curwin' will soon be the current window, make sure it has enough
1654 * rows.
1655 */
1656 void
1657 win_equal(next_curwin, current, dir)
1658 win_T *next_curwin; /* pointer to current window to be or NULL */
1659 int current; /* do only frame with current window */
1660 int dir; /* 'v' for vertically, 'h' for horizontally,
1661 'b' for both, 0 for using p_ead */
1662 {
1663 if (dir == 0)
1664 #ifdef FEAT_VERTSPLIT
1665 dir = *p_ead;
1666 #else
1667 dir = 'b';
1668 #endif
1669 win_equal_rec(next_curwin == NULL ? curwin : next_curwin, current,
1670 topframe, dir, 0, tabline_height(),
1671 (int)Columns, topframe->fr_height);
1672 }
1673
1674 /*
1675 * Set a frame to a new position and height, spreading the available room
1676 * equally over contained frames.
1677 * The window "next_curwin" (if not NULL) should at least get the size from
1678 * 'winheight' and 'winwidth' if possible.
1679 */
1680 static void
1681 win_equal_rec(next_curwin, current, topfr, dir, col, row, width, height)
1682 win_T *next_curwin; /* pointer to current window to be or NULL */
1683 int current; /* do only frame with current window */
1684 frame_T *topfr; /* frame to set size off */
1685 int dir; /* 'v', 'h' or 'b', see win_equal() */
1686 int col; /* horizontal position for frame */
1687 int row; /* vertical position for frame */
1688 int width; /* new width of frame */
1689 int height; /* new height of frame */
1690 {
1691 int n, m;
1692 int extra_sep = 0;
1693 int wincount, totwincount = 0;
1694 frame_T *fr;
1695 int next_curwin_size = 0;
1696 int room = 0;
1697 int new_size;
1698 int has_next_curwin = 0;
1699 int hnc;
1700
1701 if (topfr->fr_layout == FR_LEAF)
1702 {
1703 /* Set the width/height of this frame.
1704 * Redraw when size or position changes */
1705 if (topfr->fr_height != height || topfr->fr_win->w_winrow != row
1706 #ifdef FEAT_VERTSPLIT
1707 || topfr->fr_width != width || topfr->fr_win->w_wincol != col
1708 #endif
1709 )
1710 {
1711 topfr->fr_win->w_winrow = row;
1712 frame_new_height(topfr, height, FALSE, FALSE);
1713 #ifdef FEAT_VERTSPLIT
1714 topfr->fr_win->w_wincol = col;
1715 frame_new_width(topfr, width, FALSE, FALSE);
1716 #endif
1717 redraw_all_later(CLEAR);
1718 }
1719 }
1720 #ifdef FEAT_VERTSPLIT
1721 else if (topfr->fr_layout == FR_ROW)
1722 {
1723 topfr->fr_width = width;
1724 topfr->fr_height = height;
1725
1726 if (dir != 'v') /* equalize frame widths */
1727 {
1728 /* Compute the maximum number of windows horizontally in this
1729 * frame. */
1730 n = frame_minwidth(topfr, NOWIN);
1731 /* add one for the rightmost window, it doesn't have a separator */
1732 if (col + width == Columns)
1733 extra_sep = 1;
1734 else
1735 extra_sep = 0;
1736 totwincount = (n + extra_sep) / (p_wmw + 1);
1737 has_next_curwin = frame_has_win(topfr, next_curwin);
1738
1739 /*
1740 * Compute width for "next_curwin" window and room available for
1741 * other windows.
1742 * "m" is the minimal width when counting p_wiw for "next_curwin".
1743 */
1744 m = frame_minwidth(topfr, next_curwin);
1745 room = width - m;
1746 if (room < 0)
1747 {
1748 next_curwin_size = p_wiw + room;
1749 room = 0;
1750 }
1751 else
1752 {
1753 next_curwin_size = -1;
1754 for (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next)
1755 {
1756 /* If 'winfixwidth' set keep the window width if
1757 * possible.
1758 * Watch out for this window being the next_curwin. */
1759 if (frame_fixed_width(fr))
1760 {
1761 n = frame_minwidth(fr, NOWIN);
1762 new_size = fr->fr_width;
1763 if (frame_has_win(fr, next_curwin))
1764 {
1765 room += p_wiw - p_wmw;
1766 next_curwin_size = 0;
1767 if (new_size < p_wiw)
1768 new_size = p_wiw;
1769 }
1770 else
1771 /* These windows don't use up room. */
1772 totwincount -= (n + (fr->fr_next == NULL
1773 ? extra_sep : 0)) / (p_wmw + 1);
1774 room -= new_size - n;
1775 if (room < 0)
1776 {
1777 new_size += room;
1778 room = 0;
1779 }
1780 fr->fr_newwidth = new_size;
1781 }
1782 }
1783 if (next_curwin_size == -1)
1784 {
1785 if (!has_next_curwin)
1786 next_curwin_size = 0;
1787 else if (totwincount > 1
1788 && (room + (totwincount - 2))
1789 / (totwincount - 1) > p_wiw)
1790 {
1791 /* Can make all windows wider than 'winwidth', spread
1792 * the room equally. */
1793 next_curwin_size = (room + p_wiw
1794 + (totwincount - 1) * p_wmw
1795 + (totwincount - 1)) / totwincount;
1796 room -= next_curwin_size - p_wiw;
1797 }
1798 else
1799 next_curwin_size = p_wiw;
1800 }
1801 }
1802
1803 if (has_next_curwin)
1804 --totwincount; /* don't count curwin */
1805 }
1806
1807 for (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next)
1808 {
1809 n = m = 0;
1810 wincount = 1;
1811 if (fr->fr_next == NULL)
1812 /* last frame gets all that remains (avoid roundoff error) */
1813 new_size = width;
1814 else if (dir == 'v')
1815 new_size = fr->fr_width;
1816 else if (frame_fixed_width(fr))
1817 {
1818 new_size = fr->fr_newwidth;
1819 wincount = 0; /* doesn't count as a sizeable window */
1820 }
1821 else
1822 {
1823 /* Compute the maximum number of windows horiz. in "fr". */
1824 n = frame_minwidth(fr, NOWIN);
1825 wincount = (n + (fr->fr_next == NULL ? extra_sep : 0))
1826 / (p_wmw + 1);
1827 m = frame_minwidth(fr, next_curwin);
1828 if (has_next_curwin)
1829 hnc = frame_has_win(fr, next_curwin);
1830 else
1831 hnc = FALSE;
1832 if (hnc) /* don't count next_curwin */
1833 --wincount;
1834 if (totwincount == 0)
1835 new_size = room;
1836 else
1837 new_size = (wincount * room + ((unsigned)totwincount >> 1))
1838 / totwincount;
1839 if (hnc) /* add next_curwin size */
1840 {
1841 next_curwin_size -= p_wiw - (m - n);
1842 new_size += next_curwin_size;
1843 room -= new_size - next_curwin_size;
1844 }
1845 else
1846 room -= new_size;
1847 new_size += n;
1848 }
1849
1850 /* Skip frame that is full width when splitting or closing a
1851 * window, unless equalizing all frames. */
1852 if (!current || dir != 'v' || topfr->fr_parent != NULL
1853 || (new_size != fr->fr_width)
1854 || frame_has_win(fr, next_curwin))
1855 win_equal_rec(next_curwin, current, fr, dir, col, row,
1856 new_size, height);
1857 col += new_size;
1858 width -= new_size;
1859 totwincount -= wincount;
1860 }
1861 }
1862 #endif
1863 else /* topfr->fr_layout == FR_COL */
1864 {
1865 #ifdef FEAT_VERTSPLIT
1866 topfr->fr_width = width;
1867 #endif
1868 topfr->fr_height = height;
1869
1870 if (dir != 'h') /* equalize frame heights */
1871 {
1872 /* Compute maximum number of windows vertically in this frame. */
1873 n = frame_minheight(topfr, NOWIN);
1874 /* add one for the bottom window if it doesn't have a statusline */
1875 if (row + height == cmdline_row && p_ls == 0)
1876 extra_sep = 1;
1877 else
1878 extra_sep = 0;
1879 totwincount = (n + extra_sep) / (p_wmh + 1);
1880 has_next_curwin = frame_has_win(topfr, next_curwin);
1881
1882 /*
1883 * Compute height for "next_curwin" window and room available for
1884 * other windows.
1885 * "m" is the minimal height when counting p_wh for "next_curwin".
1886 */
1887 m = frame_minheight(topfr, next_curwin);
1888 room = height - m;
1889 if (room < 0)
1890 {
1891 /* The room is less then 'winheight', use all space for the
1892 * current window. */
1893 next_curwin_size = p_wh + room;
1894 room = 0;
1895 }
1896 else
1897 {
1898 next_curwin_size = -1;
1899 for (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next)
1900 {
1901 /* If 'winfixheight' set keep the window height if
1902 * possible.
1903 * Watch out for this window being the next_curwin. */
1904 if (frame_fixed_height(fr))
1905 {
1906 n = frame_minheight(fr, NOWIN);
1907 new_size = fr->fr_height;
1908 if (frame_has_win(fr, next_curwin))
1909 {
1910 room += p_wh - p_wmh;
1911 next_curwin_size = 0;
1912 if (new_size < p_wh)
1913 new_size = p_wh;
1914 }
1915 else
1916 /* These windows don't use up room. */
1917 totwincount -= (n + (fr->fr_next == NULL
1918 ? extra_sep : 0)) / (p_wmh + 1);
1919 room -= new_size - n;
1920 if (room < 0)
1921 {
1922 new_size += room;
1923 room = 0;
1924 }
1925 fr->fr_newheight = new_size;
1926 }
1927 }
1928 if (next_curwin_size == -1)
1929 {
1930 if (!has_next_curwin)
1931 next_curwin_size = 0;
1932 else if (totwincount > 1
1933 && (room + (totwincount - 2))
1934 / (totwincount - 1) > p_wh)
1935 {
1936 /* can make all windows higher than 'winheight',
1937 * spread the room equally. */
1938 next_curwin_size = (room + p_wh
1939 + (totwincount - 1) * p_wmh
1940 + (totwincount - 1)) / totwincount;
1941 room -= next_curwin_size - p_wh;
1942 }
1943 else
1944 next_curwin_size = p_wh;
1945 }
1946 }
1947
1948 if (has_next_curwin)
1949 --totwincount; /* don't count curwin */
1950 }
1951
1952 for (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next)
1953 {
1954 n = m = 0;
1955 wincount = 1;
1956 if (fr->fr_next == NULL)
1957 /* last frame gets all that remains (avoid roundoff error) */
1958 new_size = height;
1959 else if (dir == 'h')
1960 new_size = fr->fr_height;
1961 else if (frame_fixed_height(fr))
1962 {
1963 new_size = fr->fr_newheight;
1964 wincount = 0; /* doesn't count as a sizeable window */
1965 }
1966 else
1967 {
1968 /* Compute the maximum number of windows vert. in "fr". */
1969 n = frame_minheight(fr, NOWIN);
1970 wincount = (n + (fr->fr_next == NULL ? extra_sep : 0))
1971 / (p_wmh + 1);
1972 m = frame_minheight(fr, next_curwin);
1973 if (has_next_curwin)
1974 hnc = frame_has_win(fr, next_curwin);
1975 else
1976 hnc = FALSE;
1977 if (hnc) /* don't count next_curwin */
1978 --wincount;
1979 if (totwincount == 0)
1980 new_size = room;
1981 else
1982 new_size = (wincount * room + ((unsigned)totwincount >> 1))
1983 / totwincount;
1984 if (hnc) /* add next_curwin size */
1985 {
1986 next_curwin_size -= p_wh - (m - n);
1987 new_size += next_curwin_size;
1988 room -= new_size - next_curwin_size;
1989 }
1990 else
1991 room -= new_size;
1992 new_size += n;
1993 }
1994 /* Skip frame that is full width when splitting or closing a
1995 * window, unless equalizing all frames. */
1996 if (!current || dir != 'h' || topfr->fr_parent != NULL
1997 || (new_size != fr->fr_height)
1998 || frame_has_win(fr, next_curwin))
1999 win_equal_rec(next_curwin, current, fr, dir, col, row,
2000 width, new_size);
2001 row += new_size;
2002 height -= new_size;
2003 totwincount -= wincount;
2004 }
2005 }
2006 }
2007
2008 /*
2009 * close all windows for buffer 'buf'
2010 */
2011 void
2012 close_windows(buf, keep_curwin)
2013 buf_T *buf;
2014 int keep_curwin; /* don't close "curwin" */
2015 {
2016 win_T *wp;
2017 tabpage_T *tp, *nexttp;
2018 int h = tabline_height();
2019
2020 ++RedrawingDisabled;
2021
2022 for (wp = firstwin; wp != NULL && lastwin != firstwin; )
2023 {
2024 if (wp->w_buffer == buf && (!keep_curwin || wp != curwin))
2025 {
2026 win_close(wp, FALSE);
2027
2028 /* Start all over, autocommands may change the window layout. */
2029 wp = firstwin;
2030 }
2031 else
2032 wp = wp->w_next;
2033 }
2034
2035 /* Also check windows in other tab pages. */
2036 for (tp = first_tabpage; tp != NULL; tp = nexttp)
2037 {
2038 nexttp = tp->tp_next;
2039 if (tp != curtab)
2040 for (wp = tp->tp_firstwin; wp != NULL; wp = wp->w_next)
2041 if (wp->w_buffer == buf)
2042 {
2043 win_close_othertab(wp, FALSE, tp);
2044
2045 /* Start all over, the tab page may be closed and
2046 * autocommands may change the window layout. */
2047 nexttp = first_tabpage;
2048 break;
2049 }
2050 }
2051
2052 --RedrawingDisabled;
2053
2054 if (h != tabline_height())
2055 shell_new_rows();
2056 }
2057
2058 /*
2059 * Return TRUE if the current window is the only window that exists (ignoring
2060 * "aucmd_win").
2061 * Returns FALSE if there is a window, possibly in another tab page.
2062 */
2063 static int
2064 last_window()
2065 {
2066 return (one_window() && first_tabpage->tp_next == NULL);
2067 }
2068
2069 /*
2070 * Return TRUE if there is only one window other than "aucmd_win" in the
2071 * current tab page.
2072 */
2073 static int
2074 one_window()
2075 {
2076 #ifdef FEAT_AUTOCMD
2077 win_T *wp;
2078 int seen_one = FALSE;
2079
2080 FOR_ALL_WINDOWS(wp)
2081 {
2082 if (wp != aucmd_win)
2083 {
2084 if (seen_one)
2085 return FALSE;
2086 seen_one = TRUE;
2087 }
2088 }
2089 return TRUE;
2090 #else
2091 return firstwin == lastwin;
2092 #endif
2093 }
2094
2095 /*
2096 * Close window "win". Only works for the current tab page.
2097 * If "free_buf" is TRUE related buffer may be unloaded.
2098 *
2099 * called by :quit, :close, :xit, :wq and findtag()
2100 */
2101 void
2102 win_close(win, free_buf)
2103 win_T *win;
2104 int free_buf;
2105 {
2106 win_T *wp;
2107 #ifdef FEAT_AUTOCMD
2108 int other_buffer = FALSE;
2109 #endif
2110 int close_curwin = FALSE;
2111 int dir;
2112 int help_window = FALSE;
2113 tabpage_T *prev_curtab = curtab;
2114
2115 if (last_window())
2116 {
2117 EMSG(_("E444: Cannot close last window"));
2118 return;
2119 }
2120
2121 #ifdef FEAT_AUTOCMD
2122 if (win == aucmd_win)
2123 {
2124 EMSG(_("E813: Cannot close autocmd window"));
2125 return;
2126 }
2127 if ((firstwin == aucmd_win || lastwin == aucmd_win) && one_window())
2128 {
2129 EMSG(_("E814: Cannot close window, only autocmd window would remain"));
2130 return;
2131 }
2132 #endif
2133
2134 /*
2135 * When closing the last window in a tab page first go to another tab
2136 * page and then close the window and the tab page. This avoids that
2137 * curwin and curtab are not invalid while we are freeing memory, they may
2138 * be used in GUI events.
2139 */
2140 if (firstwin == lastwin)
2141 {
2142 goto_tabpage_tp(alt_tabpage());
2143 redraw_tabline = TRUE;
2144
2145 /* Safety check: Autocommands may have closed the window when jumping
2146 * to the other tab page. */
2147 if (valid_tabpage(prev_curtab) && prev_curtab->tp_firstwin == win)
2148 {
2149 int h = tabline_height();
2150
2151 win_close_othertab(win, free_buf, prev_curtab);
2152 if (h != tabline_height())
2153 shell_new_rows();
2154 }
2155 return;
2156 }
2157
2158 /* When closing the help window, try restoring a snapshot after closing
2159 * the window. Otherwise clear the snapshot, it's now invalid. */
2160 if (win->w_buffer->b_help)
2161 help_window = TRUE;
2162 else
2163 clear_snapshot(curtab, SNAP_HELP_IDX);
2164
2165 #ifdef FEAT_AUTOCMD
2166 if (win == curwin)
2167 {
2168 /*
2169 * Guess which window is going to be the new current window.
2170 * This may change because of the autocommands (sigh).
2171 */
2172 wp = frame2win(win_altframe(win, NULL));
2173
2174 /*
2175 * Be careful: If autocommands delete the window, return now.
2176 */
2177 if (wp->w_buffer != curbuf)
2178 {
2179 other_buffer = TRUE;
2180 apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
2181 if (!win_valid(win) || last_window())
2182 return;
2183 }
2184 apply_autocmds(EVENT_WINLEAVE, NULL, NULL, FALSE, curbuf);
2185 if (!win_valid(win) || last_window())
2186 return;
2187 # ifdef FEAT_EVAL
2188 /* autocmds may abort script processing */
2189 if (aborting())
2190 return;
2191 # endif
2192 }
2193 #endif
2194
2195 #ifdef FEAT_GUI
2196 /* Avoid trouble with scrollbars that are going to be deleted in
2197 * win_free(). */
2198 if (gui.in_use)
2199 out_flush();
2200 #endif
2201
2202 /*
2203 * Close the link to the buffer.
2204 */
2205 close_buffer(win, win->w_buffer, free_buf ? DOBUF_UNLOAD : 0);
2206
2207 /* Autocommands may have closed the window already, or closed the only
2208 * other window or moved to another tab page. */
2209 if (!win_valid(win) || last_window() || curtab != prev_curtab)
2210 return;
2211
2212 /* Free the memory used for the window. */
2213 wp = win_free_mem(win, &dir, NULL);
2214
2215 /* Make sure curwin isn't invalid. It can cause severe trouble when
2216 * printing an error message. For win_equal() curbuf needs to be valid
2217 * too. */
2218 if (win == curwin)
2219 {
2220 curwin = wp;
2221 #ifdef FEAT_QUICKFIX
2222 if (wp->w_p_pvw || bt_quickfix(wp->w_buffer))
2223 {
2224 /*
2225 * If the cursor goes to the preview or the quickfix window, try
2226 * finding another window to go to.
2227 */
2228 for (;;)
2229 {
2230 if (wp->w_next == NULL)
2231 wp = firstwin;
2232 else
2233 wp = wp->w_next;
2234 if (wp == curwin)
2235 break;
2236 if (!wp->w_p_pvw && !bt_quickfix(wp->w_buffer))
2237 {
2238 curwin = wp;
2239 break;
2240 }
2241 }
2242 }
2243 #endif
2244 curbuf = curwin->w_buffer;
2245 close_curwin = TRUE;
2246 }
2247 if (p_ea
2248 #ifdef FEAT_VERTSPLIT
2249 && (*p_ead == 'b' || *p_ead == dir)
2250 #endif
2251 )
2252 win_equal(curwin, TRUE,
2253 #ifdef FEAT_VERTSPLIT
2254 dir
2255 #else
2256 0
2257 #endif
2258 );
2259 else
2260 win_comp_pos();
2261 if (close_curwin)
2262 {
2263 win_enter_ext(wp, FALSE, TRUE);
2264 #ifdef FEAT_AUTOCMD
2265 if (other_buffer)
2266 /* careful: after this wp and win may be invalid! */
2267 apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
2268 #endif
2269 }
2270
2271 /*
2272 * If last window has a status line now and we don't want one,
2273 * remove the status line.
2274 */
2275 last_status(FALSE);
2276
2277 /* After closing the help window, try restoring the window layout from
2278 * before it was opened. */
2279 if (help_window)
2280 restore_snapshot(SNAP_HELP_IDX, close_curwin);
2281
2282 #if defined(FEAT_GUI) && defined(FEAT_VERTSPLIT)
2283 /* When 'guioptions' includes 'L' or 'R' may have to remove scrollbars. */
2284 if (gui.in_use && !win_hasvertsplit())
2285 gui_init_which_components(NULL);
2286 #endif
2287
2288 redraw_all_later(NOT_VALID);
2289 }
2290
2291 /*
2292 * Close window "win" in tab page "tp", which is not the current tab page.
2293 * This may be the last window ih that tab page and result in closing the tab,
2294 * thus "tp" may become invalid!
2295 * Caller must check if buffer is hidden and whether the tabline needs to be
2296 * updated.
2297 */
2298 void
2299 win_close_othertab(win, free_buf, tp)
2300 win_T *win;
2301 int free_buf;
2302 tabpage_T *tp;
2303 {
2304 win_T *wp;
2305 int dir;
2306 tabpage_T *ptp = NULL;
2307 int free_tp = FALSE;
2308
2309 /* Close the link to the buffer. */
2310 close_buffer(win, win->w_buffer, free_buf ? DOBUF_UNLOAD : 0);
2311
2312 /* Careful: Autocommands may have closed the tab page or made it the
2313 * current tab page. */
2314 for (ptp = first_tabpage; ptp != NULL && ptp != tp; ptp = ptp->tp_next)
2315 ;
2316 if (ptp == NULL || tp == curtab)
2317 return;
2318
2319 /* Autocommands may have closed the window already. */
2320 for (wp = tp->tp_firstwin; wp != NULL && wp != win; wp = wp->w_next)
2321 ;
2322 if (wp == NULL)
2323 return;
2324
2325 /* When closing the last window in a tab page remove the tab page. */
2326 if (tp == NULL ? firstwin == lastwin : tp->tp_firstwin == tp->tp_lastwin)
2327 {
2328 if (tp == first_tabpage)
2329 first_tabpage = tp->tp_next;
2330 else
2331 {
2332 for (ptp = first_tabpage; ptp != NULL && ptp->tp_next != tp;
2333 ptp = ptp->tp_next)
2334 ;
2335 if (ptp == NULL)
2336 {
2337 EMSG2(_(e_intern2), "win_close_othertab()");
2338 return;
2339 }
2340 ptp->tp_next = tp->tp_next;
2341 }
2342 free_tp = TRUE;
2343 }
2344
2345 /* Free the memory used for the window. */
2346 win_free_mem(win, &dir, tp);
2347
2348 if (free_tp)
2349 free_tabpage(tp);
2350 }
2351
2352 /*
2353 * Free the memory used for a window.
2354 * Returns a pointer to the window that got the freed up space.
2355 */
2356 static win_T *
2357 win_free_mem(win, dirp, tp)
2358 win_T *win;
2359 int *dirp; /* set to 'v' or 'h' for direction if 'ea' */
2360 tabpage_T *tp; /* tab page "win" is in, NULL for current */
2361 {
2362 frame_T *frp;
2363 win_T *wp;
2364
2365 /* Remove the window and its frame from the tree of frames. */
2366 frp = win->w_frame;
2367 wp = winframe_remove(win, dirp, tp);
2368 vim_free(frp);
2369 win_free(win, tp);
2370
2371 /* When deleting the current window of another tab page select a new
2372 * current window. */
2373 if (tp != NULL && win == tp->tp_curwin)
2374 tp->tp_curwin = wp;
2375
2376 return wp;
2377 }
2378
2379 #if defined(EXITFREE) || defined(PROTO)
2380 void
2381 win_free_all()
2382 {
2383 int dummy;
2384
2385 # ifdef FEAT_WINDOWS
2386 while (first_tabpage->tp_next != NULL)
2387 tabpage_close(TRUE);
2388 # endif
2389
2390 # ifdef FEAT_AUTOCMD
2391 if (aucmd_win != NULL)
2392 {
2393 (void)win_free_mem(aucmd_win, &dummy, NULL);
2394 aucmd_win = NULL;
2395 }
2396 # endif
2397
2398 while (firstwin != NULL)
2399 (void)win_free_mem(firstwin, &dummy, NULL);
2400 }
2401 #endif
2402
2403 /*
2404 * Remove a window and its frame from the tree of frames.
2405 * Returns a pointer to the window that got the freed up space.
2406 */
2407 win_T *
2408 winframe_remove(win, dirp, tp)
2409 win_T *win;
2410 int *dirp UNUSED; /* set to 'v' or 'h' for direction if 'ea' */
2411 tabpage_T *tp; /* tab page "win" is in, NULL for current */
2412 {
2413 frame_T *frp, *frp2, *frp3;
2414 frame_T *frp_close = win->w_frame;
2415 win_T *wp;
2416
2417 /*
2418 * If there is only one window there is nothing to remove.
2419 */
2420 if (tp == NULL ? firstwin == lastwin : tp->tp_firstwin == tp->tp_lastwin)
2421 return NULL;
2422
2423 /*
2424 * Remove the window from its frame.
2425 */
2426 frp2 = win_altframe(win, tp);
2427 wp = frame2win(frp2);
2428
2429 /* Remove this frame from the list of frames. */
2430 frame_remove(frp_close);
2431
2432 #ifdef FEAT_VERTSPLIT
2433 if (frp_close->fr_parent->fr_layout == FR_COL)
2434 {
2435 #endif
2436 /* When 'winfixheight' is set, try to find another frame in the column
2437 * (as close to the closed frame as possible) to distribute the height
2438 * to. */
2439 if (frp2->fr_win != NULL && frp2->fr_win->w_p_wfh)
2440 {
2441 frp = frp_close->fr_prev;
2442 frp3 = frp_close->fr_next;
2443 while (frp != NULL || frp3 != NULL)
2444 {
2445 if (frp != NULL)
2446 {
2447 if (frp->fr_win != NULL && !frp->fr_win->w_p_wfh)
2448 {
2449 frp2 = frp;
2450 wp = frp->fr_win;
2451 break;
2452 }
2453 frp = frp->fr_prev;
2454 }
2455 if (frp3 != NULL)
2456 {
2457 if (frp3->fr_win != NULL && !frp3->fr_win->w_p_wfh)
2458 {
2459 frp2 = frp3;
2460 wp = frp3->fr_win;
2461 break;
2462 }
2463 frp3 = frp3->fr_next;
2464 }
2465 }
2466 }
2467 frame_new_height(frp2, frp2->fr_height + frp_close->fr_height,
2468 frp2 == frp_close->fr_next ? TRUE : FALSE, FALSE);
2469 #ifdef FEAT_VERTSPLIT
2470 *dirp = 'v';
2471 }
2472 else
2473 {
2474 /* When 'winfixwidth' is set, try to find another frame in the column
2475 * (as close to the closed frame as possible) to distribute the width
2476 * to. */
2477 if (frp2->fr_win != NULL && frp2->fr_win->w_p_wfw)
2478 {
2479 frp = frp_close->fr_prev;
2480 frp3 = frp_close->fr_next;
2481 while (frp != NULL || frp3 != NULL)
2482 {
2483 if (frp != NULL)
2484 {
2485 if (frp->fr_win != NULL && !frp->fr_win->w_p_wfw)
2486 {
2487 frp2 = frp;
2488 wp = frp->fr_win;
2489 break;
2490 }
2491 frp = frp->fr_prev;
2492 }
2493 if (frp3 != NULL)
2494 {
2495 if (frp3->fr_win != NULL && !frp3->fr_win->w_p_wfw)
2496 {
2497 frp2 = frp3;
2498 wp = frp3->fr_win;
2499 break;
2500 }
2501 frp3 = frp3->fr_next;
2502 }
2503 }
2504 }
2505 frame_new_width(frp2, frp2->fr_width + frp_close->fr_width,
2506 frp2 == frp_close->fr_next ? TRUE : FALSE, FALSE);
2507 *dirp = 'h';
2508 }
2509 #endif
2510
2511 /* If rows/columns go to a window below/right its positions need to be
2512 * updated. Can only be done after the sizes have been updated. */
2513 if (frp2 == frp_close->fr_next)
2514 {
2515 int row = win->w_winrow;
2516 int col = W_WINCOL(win);
2517
2518 frame_comp_pos(frp2, &row, &col);
2519 }
2520
2521 if (frp2->fr_next == NULL && frp2->fr_prev == NULL)
2522 {
2523 /* There is no other frame in this list, move its info to the parent
2524 * and remove it. */
2525 frp2->fr_parent->fr_layout = frp2->fr_layout;
2526 frp2->fr_parent->fr_child = frp2->fr_child;
2527 for (frp = frp2->fr_child; frp != NULL; frp = frp->fr_next)
2528 frp->fr_parent = frp2->fr_parent;
2529 frp2->fr_parent->fr_win = frp2->fr_win;
2530 if (frp2->fr_win != NULL)
2531 frp2->fr_win->w_frame = frp2->fr_parent;
2532 frp = frp2->fr_parent;
2533 vim_free(frp2);
2534
2535 frp2 = frp->fr_parent;
2536 if (frp2 != NULL && frp2->fr_layout == frp->fr_layout)
2537 {
2538 /* The frame above the parent has the same layout, have to merge
2539 * the frames into this list. */
2540 if (frp2->fr_child == frp)
2541 frp2->fr_child = frp->fr_child;
2542 frp->fr_child->fr_prev = frp->fr_prev;
2543 if (frp->fr_prev != NULL)
2544 frp->fr_prev->fr_next = frp->fr_child;
2545 for (frp3 = frp->fr_child; ; frp3 = frp3->fr_next)
2546 {
2547 frp3->fr_parent = frp2;
2548 if (frp3->fr_next == NULL)
2549 {
2550 frp3->fr_next = frp->fr_next;
2551 if (frp->fr_next != NULL)
2552 frp->fr_next->fr_prev = frp3;
2553 break;
2554 }
2555 }
2556 vim_free(frp);
2557 }
2558 }
2559
2560 return wp;
2561 }
2562
2563 /*
2564 * Find out which frame is going to get the freed up space when "win" is
2565 * closed.
2566 * if 'splitbelow'/'splitleft' the space goes to the window above/left.
2567 * if 'nosplitbelow'/'nosplitleft' the space goes to the window below/right.
2568 * This makes opening a window and closing it immediately keep the same window
2569 * layout.
2570 */
2571 static frame_T *
2572 win_altframe(win, tp)
2573 win_T *win;
2574 tabpage_T *tp; /* tab page "win" is in, NULL for current */
2575 {
2576 frame_T *frp;
2577 int b;
2578
2579 if (tp == NULL ? firstwin == lastwin : tp->tp_firstwin == tp->tp_lastwin)
2580 /* Last window in this tab page, will go to next tab page. */
2581 return alt_tabpage()->tp_curwin->w_frame;
2582
2583 frp = win->w_frame;
2584 #ifdef FEAT_VERTSPLIT
2585 if (frp->fr_parent != NULL && frp->fr_parent->fr_layout == FR_ROW)
2586 b = p_spr;
2587 else
2588 #endif
2589 b = p_sb;
2590 if ((!b && frp->fr_next != NULL) || frp->fr_prev == NULL)
2591 return frp->fr_next;
2592 return frp->fr_prev;
2593 }
2594
2595 /*
2596 * Return the tabpage that will be used if the current one is closed.
2597 */
2598 static tabpage_T *
2599 alt_tabpage()
2600 {
2601 tabpage_T *tp;
2602
2603 /* Use the next tab page if possible. */
2604 if (curtab->tp_next != NULL)
2605 return curtab->tp_next;
2606
2607 /* Find the last but one tab page. */
2608 for (tp = first_tabpage; tp->tp_next != curtab; tp = tp->tp_next)
2609 ;
2610 return tp;
2611 }
2612
2613 /*
2614 * Find the left-upper window in frame "frp".
2615 */
2616 static win_T *
2617 frame2win(frp)
2618 frame_T *frp;
2619 {
2620 while (frp->fr_win == NULL)
2621 frp = frp->fr_child;
2622 return frp->fr_win;
2623 }
2624
2625 /*
2626 * Return TRUE if frame "frp" contains window "wp".
2627 */
2628 static int
2629 frame_has_win(frp, wp)
2630 frame_T *frp;
2631 win_T *wp;
2632 {
2633 frame_T *p;
2634
2635 if (frp->fr_layout == FR_LEAF)
2636 return frp->fr_win == wp;
2637
2638 for (p = frp->fr_child; p != NULL; p = p->fr_next)
2639 if (frame_has_win(p, wp))
2640 return TRUE;
2641 return FALSE;
2642 }
2643
2644 /*
2645 * Set a new height for a frame. Recursively sets the height for contained
2646 * frames and windows. Caller must take care of positions.
2647 */
2648 static void
2649 frame_new_height(topfrp, height, topfirst, wfh)
2650 frame_T *topfrp;
2651 int height;
2652 int topfirst; /* resize topmost contained frame first */
2653 int wfh; /* obey 'winfixheight' when there is a choice;
2654 may cause the height not to be set */
2655 {
2656 frame_T *frp;
2657 int extra_lines;
2658 int h;
2659
2660 if (topfrp->fr_win != NULL)
2661 {
2662 /* Simple case: just one window. */
2663 win_new_height(topfrp->fr_win,
2664 height - topfrp->fr_win->w_status_height);
2665 }
2666 #ifdef FEAT_VERTSPLIT
2667 else if (topfrp->fr_layout == FR_ROW)
2668 {
2669 do
2670 {
2671 /* All frames in this row get the same new height. */
2672 for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
2673 {
2674 frame_new_height(frp, height, topfirst, wfh);
2675 if (frp->fr_height > height)
2676 {
2677 /* Could not fit the windows, make the whole row higher. */
2678 height = frp->fr_height;
2679 break;
2680 }
2681 }
2682 }
2683 while (frp != NULL);
2684 }
2685 #endif
2686 else /* fr_layout == FR_COL */
2687 {
2688 /* Complicated case: Resize a column of frames. Resize the bottom
2689 * frame first, frames above that when needed. */
2690
2691 frp = topfrp->fr_child;
2692 if (wfh)
2693 /* Advance past frames with one window with 'wfh' set. */
2694 while (frame_fixed_height(frp))
2695 {
2696 frp = frp->fr_next;
2697 if (frp == NULL)
2698 return; /* no frame without 'wfh', give up */
2699 }
2700 if (!topfirst)
2701 {
2702 /* Find the bottom frame of this column */
2703 while (frp->fr_next != NULL)
2704 frp = frp->fr_next;
2705 if (wfh)
2706 /* Advance back for frames with one window with 'wfh' set. */
2707 while (frame_fixed_height(frp))
2708 frp = frp->fr_prev;
2709 }
2710
2711 extra_lines = height - topfrp->fr_height;
2712 if (extra_lines < 0)
2713 {
2714 /* reduce height of contained frames, bottom or top frame first */
2715 while (frp != NULL)
2716 {
2717 h = frame_minheight(frp, NULL);
2718 if (frp->fr_height + extra_lines < h)
2719 {
2720 extra_lines += frp->fr_height - h;
2721 frame_new_height(frp, h, topfirst, wfh);
2722 }
2723 else
2724 {
2725 frame_new_height(frp, frp->fr_height + extra_lines,
2726 topfirst, wfh);
2727 break;
2728 }
2729 if (topfirst)
2730 {
2731 do
2732 frp = frp->fr_next;
2733 while (wfh && frp != NULL && frame_fixed_height(frp));
2734 }
2735 else
2736 {
2737 do
2738 frp = frp->fr_prev;
2739 while (wfh && frp != NULL && frame_fixed_height(frp));
2740 }
2741 /* Increase "height" if we could not reduce enough frames. */
2742 if (frp == NULL)
2743 height -= extra_lines;
2744 }
2745 }
2746 else if (extra_lines > 0)
2747 {
2748 /* increase height of bottom or top frame */
2749 frame_new_height(frp, frp->fr_height + extra_lines, topfirst, wfh);
2750 }
2751 }
2752 topfrp->fr_height = height;
2753 }
2754
2755 /*
2756 * Return TRUE if height of frame "frp" should not be changed because of
2757 * the 'winfixheight' option.
2758 */
2759 static int
2760 frame_fixed_height(frp)
2761 frame_T *frp;
2762 {
2763 /* frame with one window: fixed height if 'winfixheight' set. */
2764 if (frp->fr_win != NULL)
2765 return frp->fr_win->w_p_wfh;
2766
2767 if (frp->fr_layout == FR_ROW)
2768 {
2769 /* The frame is fixed height if one of the frames in the row is fixed
2770 * height. */
2771 for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
2772 if (frame_fixed_height(frp))
2773 return TRUE;
2774 return FALSE;
2775 }
2776
2777 /* frp->fr_layout == FR_COL: The frame is fixed height if all of the
2778 * frames in the row are fixed height. */
2779 for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
2780 if (!frame_fixed_height(frp))
2781 return FALSE;
2782 return TRUE;
2783 }
2784
2785 #ifdef FEAT_VERTSPLIT
2786 /*
2787 * Return TRUE if width of frame "frp" should not be changed because of
2788 * the 'winfixwidth' option.
2789 */
2790 static int
2791 frame_fixed_width(frp)
2792 frame_T *frp;
2793 {
2794 /* frame with one window: fixed width if 'winfixwidth' set. */
2795 if (frp->fr_win != NULL)
2796 return frp->fr_win->w_p_wfw;
2797
2798 if (frp->fr_layout == FR_COL)
2799 {
2800 /* The frame is fixed width if one of the frames in the row is fixed
2801 * width. */
2802 for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
2803 if (frame_fixed_width(frp))
2804 return TRUE;
2805 return FALSE;
2806 }
2807
2808 /* frp->fr_layout == FR_ROW: The frame is fixed width if all of the
2809 * frames in the row are fixed width. */
2810 for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
2811 if (!frame_fixed_width(frp))
2812 return FALSE;
2813 return TRUE;
2814 }
2815
2816 /*
2817 * Add a status line to windows at the bottom of "frp".
2818 * Note: Does not check if there is room!
2819 */
2820 static void
2821 frame_add_statusline(frp)
2822 frame_T *frp;
2823 {
2824 win_T *wp;
2825
2826 if (frp->fr_layout == FR_LEAF)
2827 {
2828 wp = frp->fr_win;
2829 if (wp->w_status_height == 0)
2830 {
2831 if (wp->w_height > 0) /* don't make it negative */
2832 --wp->w_height;
2833 wp->w_status_height = STATUS_HEIGHT;
2834 }
2835 }
2836 else if (frp->fr_layout == FR_ROW)
2837 {
2838 /* Handle all the frames in the row. */
2839 for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
2840 frame_add_statusline(frp);
2841 }
2842 else /* frp->fr_layout == FR_COL */
2843 {
2844 /* Only need to handle the last frame in the column. */
2845 for (frp = frp->fr_child; frp->fr_next != NULL; frp = frp->fr_next)
2846 ;
2847 frame_add_statusline(frp);
2848 }
2849 }
2850
2851 /*
2852 * Set width of a frame. Handles recursively going through contained frames.
2853 * May remove separator line for windows at the right side (for win_close()).
2854 */
2855 static void
2856 frame_new_width(topfrp, width, leftfirst, wfw)
2857 frame_T *topfrp;
2858 int width;
2859 int leftfirst; /* resize leftmost contained frame first */
2860 int wfw; /* obey 'winfixwidth' when there is a choice;
2861 may cause the width not to be set */
2862 {
2863 frame_T *frp;
2864 int extra_cols;
2865 int w;
2866 win_T *wp;
2867
2868 if (topfrp->fr_layout == FR_LEAF)
2869 {
2870 /* Simple case: just one window. */
2871 wp = topfrp->fr_win;
2872 /* Find out if there are any windows right of this one. */
2873 for (frp = topfrp; frp->fr_parent != NULL; frp = frp->fr_parent)
2874 if (frp->fr_parent->fr_layout == FR_ROW && frp->fr_next != NULL)
2875 break;
2876 if (frp->fr_parent == NULL)
2877 wp->w_vsep_width = 0;
2878 win_new_width(wp, width - wp->w_vsep_width);
2879 }
2880 else if (topfrp->fr_layout == FR_COL)
2881 {
2882 do
2883 {
2884 /* All frames in this column get the same new width. */
2885 for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
2886 {
2887 frame_new_width(frp, width, leftfirst, wfw);
2888 if (frp->fr_width > width)
2889 {
2890 /* Could not fit the windows, make whole column wider. */
2891 width = frp->fr_width;
2892 break;
2893 }
2894 }
2895 } while (frp != NULL);
2896 }
2897 else /* fr_layout == FR_ROW */
2898 {
2899 /* Complicated case: Resize a row of frames. Resize the rightmost
2900 * frame first, frames left of it when needed. */
2901
2902 frp = topfrp->fr_child;
2903 if (wfw)
2904 /* Advance past frames with one window with 'wfw' set. */
2905 while (frame_fixed_width(frp))
2906 {
2907 frp = frp->fr_next;
2908 if (frp == NULL)
2909 return; /* no frame without 'wfw', give up */
2910 }
2911 if (!leftfirst)
2912 {
2913 /* Find the rightmost frame of this row */
2914 while (frp->fr_next != NULL)
2915 frp = frp->fr_next;
2916 if (wfw)
2917 /* Advance back for frames with one window with 'wfw' set. */
2918 while (frame_fixed_width(frp))
2919 frp = frp->fr_prev;
2920 }
2921
2922 extra_cols = width - topfrp->fr_width;
2923 if (extra_cols < 0)
2924 {
2925 /* reduce frame width, rightmost frame first */
2926 while (frp != NULL)
2927 {
2928 w = frame_minwidth(frp, NULL);
2929 if (frp->fr_width + extra_cols < w)
2930 {
2931 extra_cols += frp->fr_width - w;
2932 frame_new_width(frp, w, leftfirst, wfw);
2933 }
2934 else
2935 {
2936 frame_new_width(frp, frp->fr_width + extra_cols,
2937 leftfirst, wfw);
2938 break;
2939 }
2940 if (leftfirst)
2941 {
2942 do
2943 frp = frp->fr_next;
2944 while (wfw && frp != NULL && frame_fixed_width(frp));
2945 }
2946 else
2947 {
2948 do
2949 frp = frp->fr_prev;
2950 while (wfw && frp != NULL && frame_fixed_width(frp));
2951 }
2952 /* Increase "width" if we could not reduce enough frames. */
2953 if (frp == NULL)
2954 width -= extra_cols;
2955 }
2956 }
2957 else if (extra_cols > 0)
2958 {
2959 /* increase width of rightmost frame */
2960 frame_new_width(frp, frp->fr_width + extra_cols, leftfirst, wfw);
2961 }
2962 }
2963 topfrp->fr_width = width;
2964 }
2965
2966 /*
2967 * Add the vertical separator to windows at the right side of "frp".
2968 * Note: Does not check if there is room!
2969 */
2970 static void
2971 frame_add_vsep(frp)
2972 frame_T *frp;
2973 {
2974 win_T *wp;
2975
2976 if (frp->fr_layout == FR_LEAF)
2977 {
2978 wp = frp->fr_win;
2979 if (wp->w_vsep_width == 0)
2980 {
2981 if (wp->w_width > 0) /* don't make it negative */
2982 --wp->w_width;
2983 wp->w_vsep_width = 1;
2984 }
2985 }
2986 else if (frp->fr_layout == FR_COL)
2987 {
2988 /* Handle all the frames in the column. */
2989 for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
2990 frame_add_vsep(frp);
2991 }
2992 else /* frp->fr_layout == FR_ROW */
2993 {
2994 /* Only need to handle the last frame in the row. */
2995 frp = frp->fr_child;
2996 while (frp->fr_next != NULL)
2997 frp = frp->fr_next;
2998 frame_add_vsep(frp);
2999 }
3000 }
3001
3002 /*
3003 * Set frame width from the window it contains.
3004 */
3005 static void
3006 frame_fix_width(wp)
3007 win_T *wp;
3008 {
3009 wp->w_frame->fr_width = wp->w_width + wp->w_vsep_width;
3010 }
3011 #endif
3012
3013 /*
3014 * Set frame height from the window it contains.
3015 */
3016 static void
3017 frame_fix_height(wp)
3018 win_T *wp;
3019 {
3020 wp->w_frame->fr_height = wp->w_height + wp->w_status_height;
3021 }
3022
3023 /*
3024 * Compute the minimal height for frame "topfrp".
3025 * Uses the 'winminheight' option.
3026 * When "next_curwin" isn't NULL, use p_wh for this window.
3027 * When "next_curwin" is NOWIN, don't use at least one line for the current
3028 * window.
3029 */
3030 static int
3031 frame_minheight(topfrp, next_curwin)
3032 frame_T *topfrp;
3033 win_T *next_curwin;
3034 {
3035 frame_T *frp;
3036 int m;
3037 #ifdef FEAT_VERTSPLIT
3038 int n;
3039 #endif
3040
3041 if (topfrp->fr_win != NULL)
3042 {
3043 if (topfrp->fr_win == next_curwin)
3044 m = p_wh + topfrp->fr_win->w_status_height;
3045 else
3046 {
3047 /* window: minimal height of the window plus status line */
3048 m = p_wmh + topfrp->fr_win->w_status_height;
3049 /* Current window is minimal one line high */
3050 if (p_wmh == 0 && topfrp->fr_win == curwin && next_curwin == NULL)
3051 ++m;
3052 }
3053 }
3054 #ifdef FEAT_VERTSPLIT
3055 else if (topfrp->fr_layout == FR_ROW)
3056 {
3057 /* get the minimal height from each frame in this row */
3058 m = 0;
3059 for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
3060 {
3061 n = frame_minheight(frp, next_curwin);
3062 if (n > m)
3063 m = n;
3064 }
3065 }
3066 #endif
3067 else
3068 {
3069 /* Add up the minimal heights for all frames in this column. */
3070 m = 0;
3071 for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
3072 m += frame_minheight(frp, next_curwin);
3073 }
3074
3075 return m;
3076 }
3077
3078 #ifdef FEAT_VERTSPLIT
3079 /*
3080 * Compute the minimal width for frame "topfrp".
3081 * When "next_curwin" isn't NULL, use p_wiw for this window.
3082 * When "next_curwin" is NOWIN, don't use at least one column for the current
3083 * window.
3084 */
3085 static int
3086 frame_minwidth(topfrp, next_curwin)
3087 frame_T *topfrp;
3088 win_T *next_curwin; /* use p_wh and p_wiw for next_curwin */
3089 {
3090 frame_T *frp;
3091 int m, n;
3092
3093 if (topfrp->fr_win != NULL)
3094 {
3095 if (topfrp->fr_win == next_curwin)
3096 m = p_wiw + topfrp->fr_win->w_vsep_width;
3097 else
3098 {
3099 /* window: minimal width of the window plus separator column */
3100 m = p_wmw + topfrp->fr_win->w_vsep_width;
3101 /* Current window is minimal one column wide */
3102 if (p_wmw == 0 && topfrp->fr_win == curwin && next_curwin == NULL)
3103 ++m;
3104 }
3105 }
3106 else if (topfrp->fr_layout == FR_COL)
3107 {
3108 /* get the minimal width from each frame in this column */
3109 m = 0;
3110 for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
3111 {
3112 n = frame_minwidth(frp, next_curwin);
3113 if (n > m)
3114 m = n;
3115 }
3116 }
3117 else
3118 {
3119 /* Add up the minimal widths for all frames in this row. */
3120 m = 0;
3121 for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
3122 m += frame_minwidth(frp, next_curwin);
3123 }
3124
3125 return m;
3126 }
3127 #endif
3128
3129
3130 /*
3131 * Try to close all windows except current one.
3132 * Buffers in the other windows become hidden if 'hidden' is set, or '!' is
3133 * used and the buffer was modified.
3134 *
3135 * Used by ":bdel" and ":only".
3136 */
3137 void
3138 close_others(message, forceit)
3139 int message;
3140 int forceit; /* always hide all other windows */
3141 {
3142 win_T *wp;
3143 win_T *nextwp;
3144 int r;
3145
3146 if (one_window())
3147 {
3148 if (message
3149 #ifdef FEAT_AUTOCMD
3150 && !autocmd_busy
3151 #endif
3152 )
3153 MSG(_(m_onlyone));
3154 return;
3155 }
3156
3157 /* Be very careful here: autocommands may change the window layout. */
3158 for (wp = firstwin; win_valid(wp); wp = nextwp)
3159 {
3160 nextwp = wp->w_next;
3161 if (wp != curwin) /* don't close current window */
3162 {
3163
3164 /* Check if it's allowed to abandon this window */
3165 r = can_abandon(wp->w_buffer, forceit);
3166 #ifdef FEAT_AUTOCMD
3167 if (!win_valid(wp)) /* autocommands messed wp up */
3168 {
3169 nextwp = firstwin;
3170 continue;
3171 }
3172 #endif
3173 if (!r)
3174 {
3175 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
3176 if (message && (p_confirm || cmdmod.confirm) && p_write)
3177 {
3178 dialog_changed(wp->w_buffer, FALSE);
3179 # ifdef FEAT_AUTOCMD
3180 if (!win_valid(wp)) /* autocommands messed wp up */
3181 {
3182 nextwp = firstwin;
3183 continue;
3184 }
3185 # endif
3186 }
3187 if (bufIsChanged(wp->w_buffer))
3188 #endif
3189 continue;
3190 }
3191 win_close(wp, !P_HID(wp->w_buffer) && !bufIsChanged(wp->w_buffer));
3192 }
3193 }
3194
3195 if (message && lastwin != firstwin)
3196 EMSG(_("E445: Other window contains changes"));
3197 }
3198
3199 #endif /* FEAT_WINDOWS */
3200
3201 /*
3202 * Init the current window "curwin".
3203 * Called when a new file is being edited.
3204 */
3205 void
3206 curwin_init()
3207 {
3208 win_init_empty(curwin);
3209 }
3210
3211 void
3212 win_init_empty(wp)
3213 win_T *wp;
3214 {
3215 redraw_win_later(wp, NOT_VALID);
3216 wp->w_lines_valid = 0;
3217 wp->w_cursor.lnum = 1;
3218 wp->w_curswant = wp->w_cursor.col = 0;
3219 #ifdef FEAT_VIRTUALEDIT
3220 wp->w_cursor.coladd = 0;
3221 #endif
3222 wp->w_pcmark.lnum = 1; /* pcmark not cleared but set to line 1 */
3223 wp->w_pcmark.col = 0;
3224 wp->w_prev_pcmark.lnum = 0;
3225 wp->w_prev_pcmark.col = 0;
3226 wp->w_topline = 1;
3227 #ifdef FEAT_DIFF
3228 wp->w_topfill = 0;
3229 #endif
3230 wp->w_botline = 2;
3231 #ifdef FEAT_FKMAP
3232 if (wp->w_p_rl)
3233 wp->w_farsi = W_CONV + W_R_L;
3234 else
3235 wp->w_farsi = W_CONV;
3236 #endif
3237 }
3238
3239 /*
3240 * Allocate the first window and put an empty buffer in it.
3241 * Called from main().
3242 * Return FAIL when something goes wrong (out of memory).
3243 */
3244 int
3245 win_alloc_first()
3246 {
3247 if (win_alloc_firstwin(NULL) == FAIL)
3248 return FAIL;
3249
3250 #ifdef FEAT_WINDOWS
3251 first_tabpage = alloc_tabpage();
3252 if (first_tabpage == NULL)
3253 return FAIL;
3254 first_tabpage->tp_topframe = topframe;
3255 curtab = first_tabpage;
3256 #endif
3257
3258 return OK;
3259 }
3260
3261 #if defined(FEAT_AUTOCMD) || defined(PROTO)
3262 /*
3263 * Init "aucmd_win". This can only be done after the first
3264 * window is fully initialized, thus it can't be in win_alloc_first().
3265 */
3266 void
3267 win_alloc_aucmd_win()
3268 {
3269 aucmd_win = win_alloc(NULL, TRUE);
3270 if (aucmd_win != NULL)
3271 {
3272 win_init_some(aucmd_win, curwin);
3273 # ifdef FEAT_SCROLLBIND
3274 aucmd_win->w_p_scb = FALSE;
3275 # endif
3276 new_frame(aucmd_win);
3277 }
3278 }
3279 #endif
3280
3281 /*
3282 * Allocate the first window or the first window in a new tab page.
3283 * When "oldwin" is NULL create an empty buffer for it.
3284 * When "oldwin" is not NULL copy info from it to the new window (only with
3285 * FEAT_WINDOWS).
3286 * Return FAIL when something goes wrong (out of memory).
3287 */
3288 static int
3289 win_alloc_firstwin(oldwin)
3290 win_T *oldwin;
3291 {
3292 curwin = win_alloc(NULL, FALSE);
3293 if (oldwin == NULL)
3294 {
3295 /* Very first window, need to create an empty buffer for it and
3296 * initialize from scratch. */
3297 curbuf = buflist_new(NULL, NULL, 1L, BLN_LISTED);
3298 if (curwin == NULL || curbuf == NULL)
3299 return FAIL;
3300 curwin->w_buffer = curbuf;
3301 curbuf->b_nwindows = 1; /* there is one window */
3302 #ifdef FEAT_WINDOWS
3303 curwin->w_alist = &global_alist;
3304 #endif
3305 curwin_init(); /* init current window */
3306 }
3307 #ifdef FEAT_WINDOWS
3308 else
3309 {
3310 /* First window in new tab page, initialize it from "oldwin". */
3311 win_init(curwin, oldwin, 0);
3312
3313 # ifdef FEAT_SCROLLBIND
3314 /* We don't want scroll-binding in the first window. */
3315 curwin->w_p_scb = FALSE;
3316 # endif
3317 }
3318 #endif
3319
3320 new_frame(curwin);
3321 if (curwin->w_frame == NULL)
3322 return FAIL;
3323 topframe = curwin->w_frame;
3324 #ifdef FEAT_VERTSPLIT
3325 topframe->fr_width = Columns;
3326 #endif
3327 topframe->fr_height = Rows - p_ch;
3328 topframe->fr_win = curwin;
3329
3330 return OK;
3331 }
3332
3333 /*
3334 * Create a frame for window "wp".
3335 */
3336 static void
3337 new_frame(win_T *wp)
3338 {
3339 frame_T *frp = (frame_T *)alloc_clear((unsigned)sizeof(frame_T));
3340
3341 wp->w_frame = frp;
3342 if (frp != NULL)
3343 {
3344 frp->fr_layout = FR_LEAF;
3345 frp->fr_win = wp;
3346 }
3347 }
3348
3349 /*
3350 * Initialize the window and frame size to the maximum.
3351 */
3352 void
3353 win_init_size()
3354 {
3355 firstwin->w_height = ROWS_AVAIL;
3356 topframe->fr_height = ROWS_AVAIL;
3357 #ifdef FEAT_VERTSPLIT
3358 firstwin->w_width = Columns;
3359 topframe->fr_width = Columns;
3360 #endif
3361 }
3362
3363 #if defined(FEAT_WINDOWS) || defined(PROTO)
3364
3365 /*
3366 * Allocate a new tabpage_T and init the values.
3367 * Returns NULL when out of memory.
3368 */
3369 static tabpage_T *
3370 alloc_tabpage()
3371 {
3372 tabpage_T *tp;
3373
3374 tp = (tabpage_T *)alloc_clear((unsigned)sizeof(tabpage_T));
3375 if (tp != NULL)
3376 {
3377 # ifdef FEAT_GUI
3378 int i;
3379
3380 for (i = 0; i < 3; i++)
3381 tp->tp_prev_which_scrollbars[i] = -1;
3382 # endif
3383 # ifdef FEAT_DIFF
3384 tp->tp_diff_invalid = TRUE;
3385 # endif
3386 #ifdef FEAT_EVAL
3387 /* init t: variables */
3388 init_var_dict(&tp->tp_vars, &tp->tp_winvar);
3389 #endif
3390 tp->tp_ch_used = p_ch;
3391 }
3392 return tp;
3393 }
3394
3395 void
3396 free_tabpage(tp)
3397 tabpage_T *tp;
3398 {
3399 int idx;
3400
3401 # ifdef FEAT_DIFF
3402 diff_clear(tp);
3403 # endif
3404 for (idx = 0; idx < SNAP_COUNT; ++idx)
3405 clear_snapshot(tp, idx);
3406 #ifdef FEAT_EVAL
3407 vars_clear(&tp->tp_vars.dv_hashtab); /* free all t: variables */
3408 #endif
3409 vim_free(tp);
3410 }
3411
3412 /*
3413 * Create a new Tab page with one window.
3414 * It will edit the current buffer, like after ":split".
3415 * When "after" is 0 put it just after the current Tab page.
3416 * Otherwise put it just before tab page "after".
3417 * Return FAIL or OK.
3418 */
3419 int
3420 win_new_tabpage(after)
3421 int after;
3422 {
3423 tabpage_T *tp = curtab;
3424 tabpage_T *newtp;
3425 int n;
3426
3427 newtp = alloc_tabpage();
3428 if (newtp == NULL)
3429 return FAIL;
3430
3431 /* Remember the current windows in this Tab page. */
3432 if (leave_tabpage(curbuf) == FAIL)
3433 {
3434 vim_free(newtp);
3435 return FAIL;
3436 }
3437 curtab = newtp;
3438
3439 /* Create a new empty window. */
3440 if (win_alloc_firstwin(tp->tp_curwin) == OK)
3441 {
3442 /* Make the new Tab page the new topframe. */
3443 if (after == 1)
3444 {
3445 /* New tab page becomes the first one. */
3446 newtp->tp_next = first_tabpage;
3447 first_tabpage = newtp;
3448 }
3449 else
3450 {
3451 if (after > 0)
3452 {
3453 /* Put new tab page before tab page "after". */
3454 n = 2;
3455 for (tp = first_tabpage; tp->tp_next != NULL
3456 && n < after; tp = tp->tp_next)
3457 ++n;
3458 }
3459 newtp->tp_next = tp->tp_next;
3460 tp->tp_next = newtp;
3461 }
3462 win_init_size();
3463 firstwin->w_winrow = tabline_height();
3464 win_comp_scroll(curwin);
3465
3466 newtp->tp_topframe = topframe;
3467 last_status(FALSE);
3468
3469 #if defined(FEAT_GUI)
3470 /* When 'guioptions' includes 'L' or 'R' may have to remove or add
3471 * scrollbars. Have to update them anyway. */
3472 gui_may_update_scrollbars();
3473 #endif
3474
3475 redraw_all_later(CLEAR);
3476 #ifdef FEAT_AUTOCMD
3477 apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
3478 apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
3479 #endif
3480 return OK;
3481 }
3482
3483 /* Failed, get back the previous Tab page */
3484 enter_tabpage(curtab, curbuf);
3485 return FAIL;
3486 }
3487
3488 /*
3489 * Open a new tab page if ":tab cmd" was used. It will edit the same buffer,
3490 * like with ":split".
3491 * Returns OK if a new tab page was created, FAIL otherwise.
3492 */
3493 int
3494 may_open_tabpage()
3495 {
3496 int n = (cmdmod.tab == 0) ? postponed_split_tab : cmdmod.tab;
3497
3498 if (n != 0)
3499 {
3500 cmdmod.tab = 0; /* reset it to avoid doing it twice */
3501 postponed_split_tab = 0;
3502 return win_new_tabpage(n);
3503 }
3504 return FAIL;
3505 }
3506
3507 /*
3508 * Create up to "maxcount" tabpages with empty windows.
3509 * Returns the number of resulting tab pages.
3510 */
3511 int
3512 make_tabpages(maxcount)
3513 int maxcount;
3514 {
3515 int count = maxcount;
3516 int todo;
3517
3518 /* Limit to 'tabpagemax' tabs. */
3519 if (count > p_tpm)
3520 count = p_tpm;
3521
3522 #ifdef FEAT_AUTOCMD
3523 /*
3524 * Don't execute autocommands while creating the tab pages. Must do that
3525 * when putting the buffers in the windows.
3526 */
3527 block_autocmds();
3528 #endif
3529
3530 for (todo = count - 1; todo > 0; --todo)
3531 if (win_new_tabpage(0) == FAIL)
3532 break;
3533
3534 #ifdef FEAT_AUTOCMD
3535 unblock_autocmds();
3536 #endif
3537
3538 /* return actual number of tab pages */
3539 return (count - todo);
3540 }
3541
3542 /*
3543 * Return TRUE when "tpc" points to a valid tab page.
3544 */
3545 int
3546 valid_tabpage(tpc)
3547 tabpage_T *tpc;
3548 {
3549 tabpage_T *tp;
3550
3551 for (tp = first_tabpage; tp != NULL; tp = tp->tp_next)
3552 if (tp == tpc)
3553 return TRUE;
3554 return FALSE;
3555 }
3556
3557 /*
3558 * Find tab page "n" (first one is 1). Returns NULL when not found.
3559 */
3560 tabpage_T *
3561 find_tabpage(n)
3562 int n;
3563 {
3564 tabpage_T *tp;
3565 int i = 1;
3566
3567 for (tp = first_tabpage; tp != NULL && i != n; tp = tp->tp_next)
3568 ++i;
3569 return tp;
3570 }
3571
3572 /*
3573 * Get index of tab page "tp". First one has index 1.
3574 * When not found returns number of tab pages plus one.
3575 */
3576 int
3577 tabpage_index(ftp)
3578 tabpage_T *ftp;
3579 {
3580 int i = 1;
3581 tabpage_T *tp;
3582
3583 for (tp = first_tabpage; tp != NULL && tp != ftp; tp = tp->tp_next)
3584 ++i;
3585 return i;
3586 }
3587
3588 /*
3589 * Prepare for leaving the current tab page.
3590 * When autocomands change "curtab" we don't leave the tab page and return
3591 * FAIL.
3592 * Careful: When OK is returned need to get a new tab page very very soon!
3593 */
3594 static int
3595 leave_tabpage(new_curbuf)
3596 buf_T *new_curbuf UNUSED; /* what is going to be the new curbuf,
3597 NULL if unknown */
3598 {
3599 tabpage_T *tp = curtab;
3600
3601 #ifdef FEAT_VISUAL
3602 reset_VIsual_and_resel(); /* stop Visual mode */
3603 #endif
3604 #ifdef FEAT_AUTOCMD
3605 if (new_curbuf != curbuf)
3606 {
3607 apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
3608 if (curtab != tp)
3609 return FAIL;
3610 }
3611 apply_autocmds(EVENT_WINLEAVE, NULL, NULL, FALSE, curbuf);
3612 if (curtab != tp)
3613 return FAIL;
3614 apply_autocmds(EVENT_TABLEAVE, NULL, NULL, FALSE, curbuf);
3615 if (curtab != tp)
3616 return FAIL;
3617 #endif
3618 #if defined(FEAT_GUI)
3619 /* Remove the scrollbars. They may be added back later. */
3620 if (gui.in_use)
3621 gui_remove_scrollbars();
3622 #endif
3623 tp->tp_curwin = curwin;
3624 tp->tp_prevwin = prevwin;
3625 tp->tp_firstwin = firstwin;
3626 tp->tp_lastwin = lastwin;
3627 tp->tp_old_Rows = Rows;
3628 tp->tp_old_Columns = Columns;
3629 firstwin = NULL;
3630 lastwin = NULL;
3631 return OK;
3632 }
3633
3634 /*
3635 * Start using tab page "tp".
3636 * Only to be used after leave_tabpage() or freeing the current tab page.
3637 */
3638 static void
3639 enter_tabpage(tp, old_curbuf)
3640 tabpage_T *tp;
3641 buf_T *old_curbuf UNUSED;
3642 {
3643 int old_off = tp->tp_firstwin->w_winrow;
3644 win_T *next_prevwin = tp->tp_prevwin;
3645
3646 curtab = tp;
3647 firstwin = tp->tp_firstwin;
3648 lastwin = tp->tp_lastwin;
3649 topframe = tp->tp_topframe;
3650
3651 /* We would like doing the TabEnter event first, but we don't have a
3652 * valid current window yet, which may break some commands.
3653 * This triggers autocommands, thus may make "tp" invalid. */
3654 win_enter_ext(tp->tp_curwin, FALSE, TRUE);
3655 prevwin = next_prevwin;
3656
3657 #ifdef FEAT_AUTOCMD
3658 apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
3659
3660 if (old_curbuf != curbuf)
3661 apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
3662 #endif
3663
3664 last_status(FALSE); /* status line may appear or disappear */
3665 (void)win_comp_pos(); /* recompute w_winrow for all windows */
3666 must_redraw = CLEAR; /* need to redraw everything */
3667 #ifdef FEAT_DIFF
3668 diff_need_scrollbind = TRUE;
3669 #endif
3670
3671 /* The tabpage line may have appeared or disappeared, may need to resize
3672 * the frames for that. When the Vim window was resized need to update
3673 * frame sizes too. Use the stored value of p_ch, so that it can be
3674 * different for each tab page. */
3675 p_ch = curtab->tp_ch_used;
3676 if (curtab->tp_old_Rows != Rows || (old_off != firstwin->w_winrow
3677 #ifdef FEAT_GUI_TABLINE
3678 && !gui_use_tabline()
3679 #endif
3680 ))
3681 shell_new_rows();
3682 #ifdef FEAT_VERTSPLIT
3683 if (curtab->tp_old_Columns != Columns && starting == 0)
3684 shell_new_columns(); /* update window widths */
3685 #endif
3686
3687 #if defined(FEAT_GUI)
3688 /* When 'guioptions' includes 'L' or 'R' may have to remove or add
3689 * scrollbars. Have to update them anyway. */
3690 gui_may_update_scrollbars();
3691 #endif
3692
3693 redraw_all_later(CLEAR);
3694 }
3695
3696 /*
3697 * Go to tab page "n". For ":tab N" and "Ngt".
3698 * When "n" is 9999 go to the last tab page.
3699 */
3700 void
3701 goto_tabpage(n)
3702 int n;
3703 {
3704 tabpage_T *tp;
3705 tabpage_T *ttp;
3706 int i;
3707
3708 if (text_locked())
3709 {
3710 /* Not allowed when editing the command line. */
3711 #ifdef FEAT_CMDWIN
3712 if (cmdwin_type != 0)
3713 EMSG(_(e_cmdwin));
3714 else
3715 #endif
3716 EMSG(_(e_secure));
3717 return;
3718 }
3719
3720 /* If there is only one it can't work. */
3721 if (first_tabpage->tp_next == NULL)
3722 {
3723 if (n > 1)
3724 beep_flush();
3725 return;
3726 }
3727
3728 if (n == 0)
3729 {
3730 /* No count, go to next tab page, wrap around end. */
3731 if (curtab->tp_next == NULL)
3732 tp = first_tabpage;
3733 else
3734 tp = curtab->tp_next;
3735 }
3736 else if (n < 0)
3737 {
3738 /* "gT": go to previous tab page, wrap around end. "N gT" repeats
3739 * this N times. */
3740 ttp = curtab;
3741 for (i = n; i < 0; ++i)
3742 {
3743 for (tp = first_tabpage; tp->tp_next != ttp && tp->tp_next != NULL;
3744 tp = tp->tp_next)
3745 ;
3746 ttp = tp;
3747 }
3748 }
3749 else if (n == 9999)
3750 {
3751 /* Go to last tab page. */
3752 for (tp = first_tabpage; tp->tp_next != NULL; tp = tp->tp_next)
3753 ;
3754 }
3755 else
3756 {
3757 /* Go to tab page "n". */
3758 tp = find_tabpage(n);
3759 if (tp == NULL)
3760 {
3761 beep_flush();
3762 return;
3763 }
3764 }
3765
3766 goto_tabpage_tp(tp);
3767
3768 #ifdef FEAT_GUI_TABLINE
3769 if (gui_use_tabline())
3770 gui_mch_set_curtab(tabpage_index(curtab));
3771 #endif
3772 }
3773
3774 /*
3775 * Go to tabpage "tp".
3776 * Note: doesn't update the GUI tab.
3777 */
3778 void
3779 goto_tabpage_tp(tp)
3780 tabpage_T *tp;
3781 {
3782 if (tp != curtab && leave_tabpage(tp->tp_curwin->w_buffer) == OK)
3783 {
3784 if (valid_tabpage(tp))
3785 enter_tabpage(tp, curbuf);
3786 else
3787 enter_tabpage(curtab, curbuf);
3788 }
3789 }
3790
3791 /*
3792 * Enter window "wp" in tab page "tp".
3793 * Also updates the GUI tab.
3794 */
3795 void
3796 goto_tabpage_win(tp, wp)
3797 tabpage_T *tp;
3798 win_T *wp;
3799 {
3800 goto_tabpage_tp(tp);
3801 if (curtab == tp && win_valid(wp))
3802 {
3803 win_enter(wp, TRUE);
3804 # ifdef FEAT_GUI_TABLINE
3805 if (gui_use_tabline())
3806 gui_mch_set_curtab(tabpage_index(curtab));
3807 # endif
3808 }
3809 }
3810
3811 /*
3812 * Move the current tab page to before tab page "nr".
3813 */
3814 void
3815 tabpage_move(nr)
3816 int nr;
3817 {
3818 int n = nr;
3819 tabpage_T *tp;
3820
3821 if (first_tabpage->tp_next == NULL)
3822 return;
3823
3824 /* Remove the current tab page from the list of tab pages. */
3825 if (curtab == first_tabpage)
3826 first_tabpage = curtab->tp_next;
3827 else
3828 {
3829 for (tp = first_tabpage; tp != NULL; tp = tp->tp_next)
3830 if (tp->tp_next == curtab)
3831 break;
3832 if (tp == NULL) /* "cannot happen" */
3833 return;
3834 tp->tp_next = curtab->tp_next;
3835 }
3836
3837 /* Re-insert it at the specified position. */
3838 if (n == 0)
3839 {
3840 curtab->tp_next = first_tabpage;
3841 first_tabpage = curtab;
3842 }
3843 else
3844 {
3845 for (tp = first_tabpage; tp->tp_next != NULL && n > 1; tp = tp->tp_next)
3846 --n;
3847 curtab->tp_next = tp->tp_next;
3848 tp->tp_next = curtab;
3849 }
3850
3851 /* Need to redraw the tabline. Tab page contents doesn't change. */
3852 redraw_tabline = TRUE;
3853 }
3854
3855
3856 /*
3857 * Go to another window.
3858 * When jumping to another buffer, stop Visual mode. Do this before
3859 * changing windows so we can yank the selection into the '*' register.
3860 * When jumping to another window on the same buffer, adjust its cursor
3861 * position to keep the same Visual area.
3862 */
3863 void
3864 win_goto(wp)
3865 win_T *wp;
3866 {
3867 if (text_locked())
3868 {
3869 beep_flush();
3870 text_locked_msg();
3871 return;
3872 }
3873 #ifdef FEAT_AUTOCMD
3874 if (curbuf_locked())
3875 return;
3876 #endif
3877
3878 #ifdef FEAT_VISUAL
3879 if (wp->w_buffer != curbuf)
3880 reset_VIsual_and_resel();
3881 else if (VIsual_active)
3882 wp->w_cursor = curwin->w_cursor;
3883 #endif
3884
3885 #ifdef FEAT_GUI
3886 need_mouse_correct = TRUE;
3887 #endif
3888 win_enter(wp, TRUE);
3889 }
3890
3891 #if defined(FEAT_PERL) || defined(PROTO)
3892 /*
3893 * Find window number "winnr" (counting top to bottom).
3894 */
3895 win_T *
3896 win_find_nr(winnr)
3897 int winnr;
3898 {
3899 win_T *wp;
3900
3901 # ifdef FEAT_WINDOWS
3902 for (wp = firstwin; wp != NULL; wp = wp->w_next)
3903 if (--winnr == 0)
3904 break;
3905 return wp;
3906 # else
3907 return curwin;
3908 # endif
3909 }
3910 #endif
3911
3912 #ifdef FEAT_VERTSPLIT
3913 /*
3914 * Move to window above or below "count" times.
3915 */
3916 static void
3917 win_goto_ver(up, count)
3918 int up; /* TRUE to go to win above */
3919 long count;
3920 {
3921 frame_T *fr;
3922 frame_T *nfr;
3923 frame_T *foundfr;
3924
3925 foundfr = curwin->w_frame;
3926 while (count--)
3927 {
3928 /*
3929 * First go upwards in the tree of frames until we find a upwards or
3930 * downwards neighbor.
3931 */
3932 fr = foundfr;
3933 for (;;)
3934 {
3935 if (fr == topframe)
3936 goto end;
3937 if (up)
3938 nfr = fr->fr_prev;
3939 else
3940 nfr = fr->fr_next;
3941 if (fr->fr_parent->fr_layout == FR_COL && nfr != NULL)
3942 break;
3943 fr = fr->fr_parent;
3944 }
3945
3946 /*
3947 * Now go downwards to find the bottom or top frame in it.
3948 */
3949 for (;;)
3950 {
3951 if (nfr->fr_layout == FR_LEAF)
3952 {
3953 foundfr = nfr;
3954 break;
3955 }
3956 fr = nfr->fr_child;
3957 if (nfr->fr_layout == FR_ROW)
3958 {
3959 /* Find the frame at the cursor row. */
3960 while (fr->fr_next != NULL
3961 && frame2win(fr)->w_wincol + fr->fr_width
3962 <= curwin->w_wincol + curwin->w_wcol)
3963 fr = fr->fr_next;
3964 }
3965 if (nfr->fr_layout == FR_COL && up)
3966 while (fr->fr_next != NULL)
3967 fr = fr->fr_next;
3968 nfr = fr;
3969 }
3970 }
3971 end:
3972 if (foundfr != NULL)
3973 win_goto(foundfr->fr_win);
3974 }
3975
3976 /*
3977 * Move to left or right window.
3978 */
3979 static void
3980 win_goto_hor(left, count)
3981 int left; /* TRUE to go to left win */
3982 long count;
3983 {
3984 frame_T *fr;
3985 frame_T *nfr;
3986 frame_T *foundfr;
3987
3988 foundfr = curwin->w_frame;
3989 while (count--)
3990 {
3991 /*
3992 * First go upwards in the tree of frames until we find a left or
3993 * right neighbor.
3994 */
3995 fr = foundfr;
3996 for (;;)
3997 {
3998 if (fr == topframe)
3999 goto end;
4000 if (left)
4001 nfr = fr->fr_prev;
4002 else
4003 nfr = fr->fr_next;
4004 if (fr->fr_parent->fr_layout == FR_ROW && nfr != NULL)
4005 break;
4006 fr = fr->fr_parent;
4007 }
4008
4009 /*
4010 * Now go downwards to find the leftmost or rightmost frame in it.
4011 */
4012 for (;;)
4013 {
4014 if (nfr->fr_layout == FR_LEAF)
4015 {
4016 foundfr = nfr;
4017 break;
4018 }
4019 fr = nfr->fr_child;
4020 if (nfr->fr_layout == FR_COL)
4021 {
4022 /* Find the frame at the cursor row. */
4023 while (fr->fr_next != NULL
4024 && frame2win(fr)->w_winrow + fr->fr_height
4025 <= curwin->w_winrow + curwin->w_wrow)
4026 fr = fr->fr_next;
4027 }
4028 if (nfr->fr_layout == FR_ROW && left)
4029 while (fr->fr_next != NULL)
4030 fr = fr->fr_next;
4031 nfr = fr;
4032 }
4033 }
4034 end:
4035 if (foundfr != NULL)
4036 win_goto(foundfr->fr_win);
4037 }
4038 #endif
4039
4040 /*
4041 * Make window "wp" the current window.
4042 */
4043 void
4044 win_enter(wp, undo_sync)
4045 win_T *wp;
4046 int undo_sync;
4047 {
4048 win_enter_ext(wp, undo_sync, FALSE);
4049 }
4050
4051 /*
4052 * Make window wp the current window.
4053 * Can be called with "curwin_invalid" TRUE, which means that curwin has just
4054 * been closed and isn't valid.
4055 */
4056 static void
4057 win_enter_ext(wp, undo_sync, curwin_invalid)
4058 win_T *wp;
4059 int undo_sync;
4060 int curwin_invalid;
4061 {
4062 #ifdef FEAT_AUTOCMD
4063 int other_buffer = FALSE;
4064 #endif
4065
4066 if (wp == curwin && !curwin_invalid) /* nothing to do */
4067 return;
4068
4069 #ifdef FEAT_AUTOCMD
4070 if (!curwin_invalid)
4071 {
4072 /*
4073 * Be careful: If autocommands delete the window, return now.
4074 */
4075 if (wp->w_buffer != curbuf)
4076 {
4077 apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
4078 other_buffer = TRUE;
4079 if (!win_valid(wp))
4080 return;
4081 }
4082 apply_autocmds(EVENT_WINLEAVE, NULL, NULL, FALSE, curbuf);
4083 if (!win_valid(wp))
4084 return;
4085 # ifdef FEAT_EVAL
4086 /* autocmds may abort script processing */
4087 if (aborting())
4088 return;
4089 # endif
4090 }
4091 #endif
4092
4093 /* sync undo before leaving the current buffer */
4094 if (undo_sync && curbuf != wp->w_buffer)
4095 u_sync(FALSE);
4096 /* may have to copy the buffer options when 'cpo' contains 'S' */
4097 if (wp->w_buffer != curbuf)
4098 buf_copy_options(wp->w_buffer, BCO_ENTER | BCO_NOHELP);
4099 if (!curwin_invalid)
4100 {
4101 prevwin = curwin; /* remember for CTRL-W p */
4102 curwin->w_redr_status = TRUE;
4103 }
4104 curwin = wp;
4105 curbuf = wp->w_buffer;
4106 check_cursor();
4107 #ifdef FEAT_VIRTUALEDIT
4108 if (!virtual_active())
4109 curwin->w_cursor.coladd = 0;
4110 #endif
4111 changed_line_abv_curs(); /* assume cursor position needs updating */
4112
4113 if (curwin->w_localdir != NULL)
4114 {
4115 /* Window has a local directory: Save current directory as global
4116 * directory (unless that was done already) and change to the local
4117 * directory. */
4118 if (globaldir == NULL)
4119 {
4120 char_u cwd[MAXPATHL];
4121
4122 if (mch_dirname(cwd, MAXPATHL) == OK)
4123 globaldir = vim_strsave(cwd);
4124 }
4125 if (mch_chdir((char *)curwin->w_localdir) == 0)
4126 shorten_fnames(TRUE);
4127 }
4128 else if (globaldir != NULL)
4129 {
4130 /* Window doesn't have a local directory and we are not in the global
4131 * directory: Change to the global directory. */
4132 ignored = mch_chdir((char *)globaldir);
4133 vim_free(globaldir);
4134 globaldir = NULL;
4135 shorten_fnames(TRUE);
4136 }
4137
4138 #ifdef FEAT_AUTOCMD
4139 apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
4140 if (other_buffer)
4141 apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
4142 #endif
4143
4144 #ifdef FEAT_TITLE
4145 maketitle();
4146 #endif
4147 curwin->w_redr_status = TRUE;
4148 redraw_tabline = TRUE;
4149 if (restart_edit)
4150 redraw_later(VALID); /* causes status line redraw */
4151
4152 /* set window height to desired minimal value */
4153 if (curwin->w_height < p_wh && !curwin->w_p_wfh)
4154 win_setheight((int)p_wh);
4155 else if (curwin->w_height == 0)
4156 win_setheight(1);
4157
4158 #ifdef FEAT_VERTSPLIT
4159 /* set window width to desired minimal value */
4160 if (curwin->w_width < p_wiw && !curwin->w_p_wfw)
4161 win_setwidth((int)p_wiw);
4162 #endif
4163
4164 #ifdef FEAT_MOUSE
4165 setmouse(); /* in case jumped to/from help buffer */
4166 #endif
4167
4168 /* Change directories when the 'acd' option is set. */
4169 DO_AUTOCHDIR
4170 }
4171
4172 #endif /* FEAT_WINDOWS */
4173
4174 #if defined(FEAT_WINDOWS) || defined(FEAT_SIGNS) || defined(PROTO)
4175 /*
4176 * Jump to the first open window that contains buffer "buf", if one exists.
4177 * Returns a pointer to the window found, otherwise NULL.
4178 */
4179 win_T *
4180 buf_jump_open_win(buf)
4181 buf_T *buf;
4182 {
4183 # ifdef FEAT_WINDOWS
4184 win_T *wp;
4185
4186 for (wp = firstwin; wp != NULL; wp = wp->w_next)
4187 if (wp->w_buffer == buf)
4188 break;
4189 if (wp != NULL)
4190 win_enter(wp, FALSE);
4191 return wp;
4192 # else
4193 if (curwin->w_buffer == buf)
4194 return curwin;
4195 return NULL;
4196 # endif
4197 }
4198
4199 /*
4200 * Jump to the first open window in any tab page that contains buffer "buf",
4201 * if one exists.
4202 * Returns a pointer to the window found, otherwise NULL.
4203 */
4204 win_T *
4205 buf_jump_open_tab(buf)
4206 buf_T *buf;
4207 {
4208 # ifdef FEAT_WINDOWS
4209 win_T *wp;
4210 tabpage_T *tp;
4211
4212 /* First try the current tab page. */
4213 wp = buf_jump_open_win(buf);
4214 if (wp != NULL)
4215 return wp;
4216
4217 for (tp = first_tabpage; tp != NULL; tp = tp->tp_next)
4218 if (tp != curtab)
4219 {
4220 for (wp = tp->tp_firstwin; wp != NULL; wp = wp->w_next)
4221 if (wp->w_buffer == buf)
4222 break;
4223 if (wp != NULL)
4224 {
4225 goto_tabpage_win(tp, wp);
4226 if (curwin != wp)
4227 wp = NULL; /* something went wrong */
4228 break;
4229 }
4230 }
4231
4232 return wp;
4233 # else
4234 if (curwin->w_buffer == buf)
4235 return curwin;
4236 return NULL;
4237 # endif
4238 }
4239 #endif
4240
4241 /*
4242 * Allocate a window structure and link it in the window list when "hidden" is
4243 * FALSE.
4244 */
4245 static win_T *
4246 win_alloc(after, hidden)
4247 win_T *after UNUSED;
4248 int hidden UNUSED;
4249 {
4250 win_T *newwin;
4251
4252 /*
4253 * allocate window structure and linesizes arrays
4254 */
4255 newwin = (win_T *)alloc_clear((unsigned)sizeof(win_T));
4256 if (newwin != NULL && win_alloc_lines(newwin) == FAIL)
4257 {
4258 vim_free(newwin);
4259 newwin = NULL;
4260 }
4261
4262 if (newwin != NULL)
4263 {
4264 #ifdef FEAT_AUTOCMD
4265 /* Don't execute autocommands while the window is not properly
4266 * initialized yet. gui_create_scrollbar() may trigger a FocusGained
4267 * event. */
4268 block_autocmds();
4269 #endif
4270 /*
4271 * link the window in the window list
4272 */
4273 #ifdef FEAT_WINDOWS
4274 if (!hidden)
4275 win_append(after, newwin);
4276 #endif
4277 #ifdef FEAT_VERTSPLIT
4278 newwin->w_wincol = 0;
4279 newwin->w_width = Columns;
4280 #endif
4281
4282 /* position the display and the cursor at the top of the file. */
4283 newwin->w_topline = 1;
4284 #ifdef FEAT_DIFF
4285 newwin->w_topfill = 0;
4286 #endif
4287 newwin->w_botline = 2;
4288 newwin->w_cursor.lnum = 1;
4289 #ifdef FEAT_SCROLLBIND
4290 newwin->w_scbind_pos = 1;
4291 #endif
4292
4293 /* We won't calculate w_fraction until resizing the window */
4294 newwin->w_fraction = 0;
4295 newwin->w_prev_fraction_row = -1;
4296
4297 #ifdef FEAT_GUI
4298 if (gui.in_use)
4299 {
4300 gui_create_scrollbar(&newwin->w_scrollbars[SBAR_LEFT],
4301 SBAR_LEFT, newwin);
4302 gui_create_scrollbar(&newwin->w_scrollbars[SBAR_RIGHT],
4303 SBAR_RIGHT, newwin);
4304 }
4305 #endif
4306 #ifdef FEAT_EVAL
4307 /* init w: variables */
4308 init_var_dict(&newwin->w_vars, &newwin->w_winvar);
4309 #endif
4310 #ifdef FEAT_FOLDING
4311 foldInitWin(newwin);
4312 #endif
4313 #ifdef FEAT_AUTOCMD
4314 unblock_autocmds();
4315 #endif
4316 #ifdef FEAT_SEARCH_EXTRA
4317 newwin->w_match_head = NULL;
4318 newwin->w_next_match_id = 4;
4319 #endif
4320 }
4321 return newwin;
4322 }
4323
4324 #if defined(FEAT_WINDOWS) || defined(PROTO)
4325
4326 /*
4327 * remove window 'wp' from the window list and free the structure
4328 */
4329 static void
4330 win_free(wp, tp)
4331 win_T *wp;
4332 tabpage_T *tp; /* tab page "win" is in, NULL for current */
4333 {
4334 int i;
4335
4336 #ifdef FEAT_FOLDING
4337 clearFolding(wp);
4338 #endif
4339
4340 /* reduce the reference count to the argument list. */
4341 alist_unlink(wp->w_alist);
4342
4343 #ifdef FEAT_AUTOCMD
4344 /* Don't execute autocommands while the window is halfway being deleted.
4345 * gui_mch_destroy_scrollbar() may trigger a FocusGained event. */
4346 block_autocmds();
4347 #endif
4348
4349 #ifdef FEAT_MZSCHEME
4350 mzscheme_window_free(wp);
4351 #endif
4352
4353 #ifdef FEAT_PERL
4354 perl_win_free(wp);
4355 #endif
4356
4357 #ifdef FEAT_PYTHON
4358 python_window_free(wp);
4359 #endif
4360
4361 #ifdef FEAT_TCL
4362 tcl_window_free(wp);
4363 #endif
4364
4365 #ifdef FEAT_RUBY
4366 ruby_window_free(wp);
4367 #endif
4368
4369 clear_winopt(&wp->w_onebuf_opt);
4370 clear_winopt(&wp->w_allbuf_opt);
4371
4372 #ifdef FEAT_EVAL
4373 vars_clear(&wp->w_vars.dv_hashtab); /* free all w: variables */
4374 #endif
4375
4376 if (prevwin == wp)
4377 prevwin = NULL;
4378 win_free_lsize(wp);
4379
4380 for (i = 0; i < wp->w_tagstacklen; ++i)
4381 vim_free(wp->w_tagstack[i].tagname);
4382
4383 vim_free(wp->w_localdir);
4384
4385 #ifdef FEAT_SEARCH_EXTRA
4386 clear_matches(wp);
4387 #endif
4388
4389 #ifdef FEAT_JUMPLIST
4390 free_jumplist(wp);
4391 #endif
4392
4393 #ifdef FEAT_QUICKFIX
4394 qf_free_all(wp);
4395 #endif
4396
4397 #ifdef FEAT_GUI
4398 if (gui.in_use)
4399 {
4400 gui_mch_destroy_scrollbar(&wp->w_scrollbars[SBAR_LEFT]);
4401 gui_mch_destroy_scrollbar(&wp->w_scrollbars[SBAR_RIGHT]);
4402 }
4403 #endif /* FEAT_GUI */
4404
4405 #ifdef FEAT_AUTOCMD
4406 if (wp != aucmd_win)
4407 #endif
4408 win_remove(wp, tp);
4409 vim_free(wp);
4410
4411 #ifdef FEAT_AUTOCMD
4412 unblock_autocmds();
4413 #endif
4414 }
4415
4416 /*
4417 * Append window "wp" in the window list after window "after".
4418 */
4419 void
4420 win_append(after, wp)
4421 win_T *after, *wp;
4422 {
4423 win_T *before;
4424
4425 if (after == NULL) /* after NULL is in front of the first */
4426 before = firstwin;
4427 else
4428 before = after->w_next;
4429
4430 wp->w_next = before;
4431 wp->w_prev = after;
4432 if (after == NULL)
4433 firstwin = wp;
4434 else
4435 after->w_next = wp;
4436 if (before == NULL)
4437 lastwin = wp;
4438 else
4439 before->w_prev = wp;
4440 }
4441
4442 /*
4443 * Remove a window from the window list.
4444 */
4445 void
4446 win_remove(wp, tp)
4447 win_T *wp;
4448 tabpage_T *tp; /* tab page "win" is in, NULL for current */
4449 {
4450 if (wp->w_prev != NULL)
4451 wp->w_prev->w_next = wp->w_next;
4452 else if (tp == NULL)
4453 firstwin = wp->w_next;
4454 else
4455 tp->tp_firstwin = wp->w_next;
4456 if (wp->w_next != NULL)
4457 wp->w_next->w_prev = wp->w_prev;
4458 else if (tp == NULL)
4459 lastwin = wp->w_prev;
4460 else
4461 tp->tp_lastwin = wp->w_prev;
4462 }
4463
4464 /*
4465 * Append frame "frp" in a frame list after frame "after".
4466 */
4467 static void
4468 frame_append(after, frp)
4469 frame_T *after, *frp;
4470 {
4471 frp->fr_next = after->fr_next;
4472 after->fr_next = frp;
4473 if (frp->fr_next != NULL)
4474 frp->fr_next->fr_prev = frp;
4475 frp->fr_prev = after;
4476 }
4477
4478 /*
4479 * Insert frame "frp" in a frame list before frame "before".
4480 */
4481 static void
4482 frame_insert(before, frp)
4483 frame_T *before, *frp;
4484 {
4485 frp->fr_next = before;
4486 frp->fr_prev = before->fr_prev;
4487 before->fr_prev = frp;
4488 if (frp->fr_prev != NULL)
4489 frp->fr_prev->fr_next = frp;
4490 else
4491 frp->fr_parent->fr_child = frp;
4492 }
4493
4494 /*
4495 * Remove a frame from a frame list.
4496 */
4497 static void
4498 frame_remove(frp)
4499 frame_T *frp;
4500 {
4501 if (frp->fr_prev != NULL)
4502 frp->fr_prev->fr_next = frp->fr_next;
4503 else
4504 frp->fr_parent->fr_child = frp->fr_next;
4505 if (frp->fr_next != NULL)
4506 frp->fr_next->fr_prev = frp->fr_prev;
4507 }
4508
4509 #endif /* FEAT_WINDOWS */
4510
4511 /*
4512 * Allocate w_lines[] for window "wp".
4513 * Return FAIL for failure, OK for success.
4514 */
4515 int
4516 win_alloc_lines(wp)
4517 win_T *wp;
4518 {
4519 wp->w_lines_valid = 0;
4520 wp->w_lines = (wline_T *)alloc_clear((unsigned)(Rows * sizeof(wline_T)));
4521 if (wp->w_lines == NULL)
4522 return FAIL;
4523 return OK;
4524 }
4525
4526 /*
4527 * free lsize arrays for a window
4528 */
4529 void
4530 win_free_lsize(wp)
4531 win_T *wp;
4532 {
4533 vim_free(wp->w_lines);
4534 wp->w_lines = NULL;
4535 }
4536
4537 /*
4538 * Called from win_new_shellsize() after Rows changed.
4539 * This only does the current tab page, others must be done when made active.
4540 */
4541 void
4542 shell_new_rows()
4543 {
4544 int h = (int)ROWS_AVAIL;
4545
4546 if (firstwin == NULL) /* not initialized yet */
4547 return;
4548 #ifdef FEAT_WINDOWS
4549 if (h < frame_minheight(topframe, NULL))
4550 h = frame_minheight(topframe, NULL);
4551
4552 /* First try setting the heights of windows with 'winfixheight'. If
4553 * that doesn't result in the right height, forget about that option. */
4554 frame_new_height(topframe, h, FALSE, TRUE);
4555 if (topframe->fr_height != h)
4556 frame_new_height(topframe, h, FALSE, FALSE);
4557
4558 (void)win_comp_pos(); /* recompute w_winrow and w_wincol */
4559 #else
4560 if (h < 1)
4561 h = 1;
4562 win_new_height(firstwin, h);
4563 #endif
4564 compute_cmdrow();
4565 #ifdef FEAT_WINDOWS
4566 curtab->tp_ch_used = p_ch;
4567 #endif
4568
4569 #if 0
4570 /* Disabled: don't want making the screen smaller make a window larger. */
4571 if (p_ea)
4572 win_equal(curwin, FALSE, 'v');
4573 #endif
4574 }
4575
4576 #if defined(FEAT_VERTSPLIT) || defined(PROTO)
4577 /*
4578 * Called from win_new_shellsize() after Columns changed.
4579 */
4580 void
4581 shell_new_columns()
4582 {
4583 if (firstwin == NULL) /* not initialized yet */
4584 return;
4585
4586 /* First try setting the widths of windows with 'winfixwidth'. If that
4587 * doesn't result in the right width, forget about that option. */
4588 frame_new_width(topframe, (int)Columns, FALSE, TRUE);
4589 if (topframe->fr_width != Columns)
4590 frame_new_width(topframe, (int)Columns, FALSE, FALSE);
4591
4592 (void)win_comp_pos(); /* recompute w_winrow and w_wincol */
4593 #if 0
4594 /* Disabled: don't want making the screen smaller make a window larger. */
4595 if (p_ea)
4596 win_equal(curwin, FALSE, 'h');
4597 #endif
4598 }
4599 #endif
4600
4601 #if defined(FEAT_CMDWIN) || defined(PROTO)
4602 /*
4603 * Save the size of all windows in "gap".
4604 */
4605 void
4606 win_size_save(gap)
4607 garray_T *gap;
4608
4609 {
4610 win_T *wp;
4611
4612 ga_init2(gap, (int)sizeof(int), 1);
4613 if (ga_grow(gap, win_count() * 2) == OK)
4614 for (wp = firstwin; wp != NULL; wp = wp->w_next)
4615 {
4616 ((int *)gap->ga_data)[gap->ga_len++] =
4617 wp->w_width + wp->w_vsep_width;
4618 ((int *)gap->ga_data)[gap->ga_len++] = wp->w_height;
4619 }
4620 }
4621
4622 /*
4623 * Restore window sizes, but only if the number of windows is still the same.
4624 * Does not free the growarray.
4625 */
4626 void
4627 win_size_restore(gap)
4628 garray_T *gap;
4629 {
4630 win_T *wp;
4631 int i;
4632
4633 if (win_count() * 2 == gap->ga_len)
4634 {
4635 i = 0;
4636 for (wp = firstwin; wp != NULL; wp = wp->w_next)
4637 {
4638 frame_setwidth(wp->w_frame, ((int *)gap->ga_data)[i++]);
4639 win_setheight_win(((int *)gap->ga_data)[i++], wp);
4640 }
4641 /* recompute the window positions */
4642 (void)win_comp_pos();
4643 }
4644 }
4645 #endif /* FEAT_CMDWIN */
4646
4647 #if defined(FEAT_WINDOWS) || defined(PROTO)
4648 /*
4649 * Update the position for all windows, using the width and height of the
4650 * frames.
4651 * Returns the row just after the last window.
4652 */
4653 int
4654 win_comp_pos()
4655 {
4656 int row = tabline_height();
4657 int col = 0;
4658
4659 frame_comp_pos(topframe, &row, &col);
4660 return row;
4661 }
4662
4663 /*
4664 * Update the position of the windows in frame "topfrp", using the width and
4665 * height of the frames.
4666 * "*row" and "*col" are the top-left position of the frame. They are updated
4667 * to the bottom-right position plus one.
4668 */
4669 static void
4670 frame_comp_pos(topfrp, row, col)
4671 frame_T *topfrp;
4672 int *row;
4673 int *col;
4674 {
4675 win_T *wp;
4676 frame_T *frp;
4677 #ifdef FEAT_VERTSPLIT
4678 int startcol;
4679 int startrow;
4680 #endif
4681
4682 wp = topfrp->fr_win;
4683 if (wp != NULL)
4684 {
4685 if (wp->w_winrow != *row
4686 #ifdef FEAT_VERTSPLIT
4687 || wp->w_wincol != *col
4688 #endif
4689 )
4690 {
4691 /* position changed, redraw */
4692 wp->w_winrow = *row;
4693 #ifdef FEAT_VERTSPLIT
4694 wp->w_wincol = *col;
4695 #endif
4696 redraw_win_later(wp, NOT_VALID);
4697 wp->w_redr_status = TRUE;
4698 }
4699 *row += wp->w_height + wp->w_status_height;
4700 #ifdef FEAT_VERTSPLIT
4701 *col += wp->w_width + wp->w_vsep_width;
4702 #endif
4703 }
4704 else
4705 {
4706 #ifdef FEAT_VERTSPLIT
4707 startrow = *row;
4708 startcol = *col;
4709 #endif
4710 for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
4711 {
4712 #ifdef FEAT_VERTSPLIT
4713 if (topfrp->fr_layout == FR_ROW)
4714 *row = startrow; /* all frames are at the same row */
4715 else
4716 *col = startcol; /* all frames are at the same col */
4717 #endif
4718 frame_comp_pos(frp, row, col);
4719 }
4720 }
4721 }
4722
4723 #endif /* FEAT_WINDOWS */
4724
4725 /*
4726 * Set current window height and take care of repositioning other windows to
4727 * fit around it.
4728 */
4729 void
4730 win_setheight(height)
4731 int height;
4732 {
4733 win_setheight_win(height, curwin);
4734 }
4735
4736 /*
4737 * Set the window height of window "win" and take care of repositioning other
4738 * windows to fit around it.
4739 */
4740 void
4741 win_setheight_win(height, win)
4742 int height;
4743 win_T *win;
4744 {
4745 int row;
4746
4747 if (win == curwin)
4748 {
4749 /* Always keep current window at least one line high, even when
4750 * 'winminheight' is zero. */
4751 #ifdef FEAT_WINDOWS
4752 if (height < p_wmh)
4753 height = p_wmh;
4754 #endif
4755 if (height == 0)
4756 height = 1;
4757 }
4758
4759 #ifdef FEAT_WINDOWS
4760 frame_setheight(win->w_frame, height + win->w_status_height);
4761
4762 /* recompute the window positions */
4763 row = win_comp_pos();
4764 #else
4765 if (height > topframe->fr_height)
4766 height = topframe->fr_height;
4767 win->w_height = height;
4768 row = height;
4769 #endif
4770
4771 /*
4772 * If there is extra space created between the last window and the command
4773 * line, clear it.
4774 */
4775 if (full_screen && msg_scrolled == 0 && row < cmdline_row)
4776 screen_fill(row, cmdline_row, 0, (int)Columns, ' ', ' ', 0);
4777 cmdline_row = row;
4778 msg_row = row;
4779 msg_col = 0;
4780
4781 redraw_all_later(NOT_VALID);
4782 }
4783
4784 #if defined(FEAT_WINDOWS) || defined(PROTO)
4785
4786 /*
4787 * Set the height of a frame to "height" and take care that all frames and
4788 * windows inside it are resized. Also resize frames on the left and right if
4789 * the are in the same FR_ROW frame.
4790 *
4791 * Strategy:
4792 * If the frame is part of a FR_COL frame, try fitting the frame in that
4793 * frame. If that doesn't work (the FR_COL frame is too small), recursively
4794 * go to containing frames to resize them and make room.
4795 * If the frame is part of a FR_ROW frame, all frames must be resized as well.
4796 * Check for the minimal height of the FR_ROW frame.
4797 * At the top level we can also use change the command line height.
4798 */
4799 static void
4800 frame_setheight(curfrp, height)
4801 frame_T *curfrp;
4802 int height;
4803 {
4804 int room; /* total number of lines available */
4805 int take; /* number of lines taken from other windows */
4806 int room_cmdline; /* lines available from cmdline */
4807 int run;
4808 frame_T *frp;
4809 int h;
4810 int room_reserved;
4811
4812 /* If the height already is the desired value, nothing to do. */
4813 if (curfrp->fr_height == height)
4814 return;
4815
4816 if (curfrp->fr_parent == NULL)
4817 {
4818 /* topframe: can only change the command line */
4819 if (height > ROWS_AVAIL)
4820 height = ROWS_AVAIL;
4821 if (height > 0)
4822 frame_new_height(curfrp, height, FALSE, FALSE);
4823 }
4824 else if (curfrp->fr_parent->fr_layout == FR_ROW)
4825 {
4826 /* Row of frames: Also need to resize frames left and right of this
4827 * one. First check for the minimal height of these. */
4828 h = frame_minheight(curfrp->fr_parent, NULL);
4829 if (height < h)
4830 height = h;
4831 frame_setheight(curfrp->fr_parent, height);
4832 }
4833 else
4834 {
4835 /*
4836 * Column of frames: try to change only frames in this column.
4837 */
4838 #ifdef FEAT_VERTSPLIT
4839 /*
4840 * Do this twice:
4841 * 1: compute room available, if it's not enough try resizing the
4842 * containing frame.
4843 * 2: compute the room available and adjust the height to it.
4844 * Try not to reduce the height of a window with 'winfixheight' set.
4845 */
4846 for (run = 1; run <= 2; ++run)
4847 #else
4848 for (;;)
4849 #endif
4850 {
4851 room = 0;
4852 room_reserved = 0;
4853 for (frp = curfrp->fr_parent->fr_child; frp != NULL;
4854 frp = frp->fr_next)
4855 {
4856 if (frp != curfrp
4857 && frp->fr_win != NULL
4858 && frp->fr_win->w_p_wfh)
4859 room_reserved += frp->fr_height;
4860 room += frp->fr_height;
4861 if (frp != curfrp)
4862 room -= frame_minheight(frp, NULL);
4863 }
4864 #ifdef FEAT_VERTSPLIT
4865 if (curfrp->fr_width != Columns)
4866 room_cmdline = 0;
4867 else
4868 #endif
4869 {
4870 room_cmdline = Rows - p_ch - (lastwin->w_winrow
4871 + lastwin->w_height + lastwin->w_status_height);
4872 if (room_cmdline < 0)
4873 room_cmdline = 0;
4874 }
4875
4876 if (height <= room + room_cmdline)
4877 break;
4878 #ifdef FEAT_VERTSPLIT
4879 if (run == 2 || curfrp->fr_width == Columns)
4880 #endif
4881 {
4882 if (height > room + room_cmdline)
4883 height = room + room_cmdline;
4884 break;
4885 }
4886 #ifdef FEAT_VERTSPLIT
4887 frame_setheight(curfrp->fr_parent, height
4888 + frame_minheight(curfrp->fr_parent, NOWIN) - (int)p_wmh - 1);
4889 #endif
4890 /*NOTREACHED*/
4891 }
4892
4893 /*
4894 * Compute the number of lines we will take from others frames (can be
4895 * negative!).
4896 */
4897 take = height - curfrp->fr_height;
4898
4899 /* If there is not enough room, also reduce the height of a window
4900 * with 'winfixheight' set. */
4901 if (height > room + room_cmdline - room_reserved)
4902 room_reserved = room + room_cmdline - height;
4903 /* If there is only a 'winfixheight' window and making the
4904 * window smaller, need to make the other window taller. */
4905 if (take < 0 && room - curfrp->fr_height < room_reserved)
4906 room_reserved = 0;
4907
4908 if (take > 0 && room_cmdline > 0)
4909 {
4910 /* use lines from cmdline first */
4911 if (take < room_cmdline)
4912 room_cmdline = take;
4913 take -= room_cmdline;
4914 topframe->fr_height += room_cmdline;
4915 }
4916
4917 /*
4918 * set the current frame to the new height
4919 */
4920 frame_new_height(curfrp, height, FALSE, FALSE);
4921
4922 /*
4923 * First take lines from the frames after the current frame. If
4924 * that is not enough, takes lines from frames above the current
4925 * frame.
4926 */
4927 for (run = 0; run < 2; ++run)
4928 {
4929 if (run == 0)
4930 frp = curfrp->fr_next; /* 1st run: start with next window */
4931 else
4932 frp = curfrp->fr_prev; /* 2nd run: start with prev window */
4933 while (frp != NULL && take != 0)
4934 {
4935 h = frame_minheight(frp, NULL);
4936 if (room_reserved > 0
4937 && frp->fr_win != NULL
4938 && frp->fr_win->w_p_wfh)
4939 {
4940 if (room_reserved >= frp->fr_height)
4941 room_reserved -= frp->fr_height;
4942 else
4943 {
4944 if (frp->fr_height - room_reserved > take)
4945 room_reserved = frp->fr_height - take;
4946 take -= frp->fr_height - room_reserved;
4947 frame_new_height(frp, room_reserved, FALSE, FALSE);
4948 room_reserved = 0;
4949 }
4950 }
4951 else
4952 {
4953 if (frp->fr_height - take < h)
4954 {
4955 take -= frp->fr_height - h;
4956 frame_new_height(frp, h, FALSE, FALSE);
4957 }
4958 else
4959 {
4960 frame_new_height(frp, frp->fr_height - take,
4961 FALSE, FALSE);
4962 take = 0;
4963 }
4964 }
4965 if (run == 0)
4966 frp = frp->fr_next;
4967 else
4968 frp = frp->fr_prev;
4969 }
4970 }
4971 }
4972 }
4973
4974 #if defined(FEAT_VERTSPLIT) || defined(PROTO)
4975 /*
4976 * Set current window width and take care of repositioning other windows to
4977 * fit around it.
4978 */
4979 void
4980 win_setwidth(width)
4981 int width;
4982 {
4983 win_setwidth_win(width, curwin);
4984 }
4985
4986 void
4987 win_setwidth_win(width, wp)
4988 int width;
4989 win_T *wp;
4990 {
4991 /* Always keep current window at least one column wide, even when
4992 * 'winminwidth' is zero. */
4993 if (wp == curwin)
4994 {
4995 if (width < p_wmw)
4996 width = p_wmw;
4997 if (width == 0)
4998 width = 1;
4999 }
5000
5001 frame_setwidth(wp->w_frame, width + wp->w_vsep_width);
5002
5003 /* recompute the window positions */
5004 (void)win_comp_pos();
5005
5006 redraw_all_later(NOT_VALID);
5007 }
5008
5009 /*
5010 * Set the width of a frame to "width" and take care that all frames and
5011 * windows inside it are resized. Also resize frames above and below if the
5012 * are in the same FR_ROW frame.
5013 *
5014 * Strategy is similar to frame_setheight().
5015 */
5016 static void
5017 frame_setwidth(curfrp, width)
5018 frame_T *curfrp;
5019 int width;
5020 {
5021 int room; /* total number of lines available */
5022 int take; /* number of lines taken from other windows */
5023 int run;
5024 frame_T *frp;
5025 int w;
5026 int room_reserved;
5027
5028 /* If the width already is the desired value, nothing to do. */
5029 if (curfrp->fr_width == width)
5030 return;
5031
5032 if (curfrp->fr_parent == NULL)
5033 /* topframe: can't change width */
5034 return;
5035
5036 if (curfrp->fr_parent->fr_layout == FR_COL)
5037 {
5038 /* Column of frames: Also need to resize frames above and below of
5039 * this one. First check for the minimal width of these. */
5040 w = frame_minwidth(curfrp->fr_parent, NULL);
5041 if (width < w)
5042 width = w;
5043 frame_setwidth(curfrp->fr_parent, width);
5044 }
5045 else
5046 {
5047 /*
5048 * Row of frames: try to change only frames in this row.
5049 *
5050 * Do this twice:
5051 * 1: compute room available, if it's not enough try resizing the
5052 * containing frame.
5053 * 2: compute the room available and adjust the width to it.
5054 */
5055 for (run = 1; run <= 2; ++run)
5056 {
5057 room = 0;
5058 room_reserved = 0;
5059 for (frp = curfrp->fr_parent->fr_child; frp != NULL;
5060 frp = frp->fr_next)
5061 {
5062 if (frp != curfrp
5063 && frp->fr_win != NULL
5064 && frp->fr_win->w_p_wfw)
5065 room_reserved += frp->fr_width;
5066 room += frp->fr_width;
5067 if (frp != curfrp)
5068 room -= frame_minwidth(frp, NULL);
5069 }
5070
5071 if (width <= room)
5072 break;
5073 if (run == 2 || curfrp->fr_height >= ROWS_AVAIL)
5074 {
5075 if (width > room)
5076 width = room;
5077 break;
5078 }
5079 frame_setwidth(curfrp->fr_parent, width
5080 + frame_minwidth(curfrp->fr_parent, NOWIN) - (int)p_wmw - 1);
5081 }
5082
5083 /*
5084 * Compute the number of lines we will take from others frames (can be
5085 * negative!).
5086 */
5087 take = width - curfrp->fr_width;
5088
5089 /* If there is not enough room, also reduce the width of a window
5090 * with 'winfixwidth' set. */
5091 if (width > room - room_reserved)
5092 room_reserved = room - width;
5093 /* If there is only a 'winfixwidth' window and making the
5094 * window smaller, need to make the other window narrower. */
5095 if (take < 0 && room - curfrp->fr_width < room_reserved)
5096 room_reserved = 0;
5097
5098 /*
5099 * set the current frame to the new width
5100 */
5101 frame_new_width(curfrp, width, FALSE, FALSE);
5102
5103 /*
5104 * First take lines from the frames right of the current frame. If
5105 * that is not enough, takes lines from frames left of the current
5106 * frame.
5107 */
5108 for (run = 0; run < 2; ++run)
5109 {
5110 if (run == 0)
5111 frp = curfrp->fr_next; /* 1st run: start with next window */
5112 else
5113 frp = curfrp->fr_prev; /* 2nd run: start with prev window */
5114 while (frp != NULL && take != 0)
5115 {
5116 w = frame_minwidth(frp, NULL);
5117 if (room_reserved > 0
5118 && frp->fr_win != NULL
5119 && frp->fr_win->w_p_wfw)
5120 {
5121 if (room_reserved >= frp->fr_width)
5122 room_reserved -= frp->fr_width;
5123 else
5124 {
5125 if (frp->fr_width - room_reserved > take)
5126 room_reserved = frp->fr_width - take;
5127 take -= frp->fr_width - room_reserved;
5128 frame_new_width(frp, room_reserved, FALSE, FALSE);
5129 room_reserved = 0;
5130 }
5131 }
5132 else
5133 {
5134 if (frp->fr_width - take < w)
5135 {
5136 take -= frp->fr_width - w;
5137 frame_new_width(frp, w, FALSE, FALSE);
5138 }
5139 else
5140 {
5141 frame_new_width(frp, frp->fr_width - take,
5142 FALSE, FALSE);
5143 take = 0;
5144 }
5145 }
5146 if (run == 0)
5147 frp = frp->fr_next;
5148 else
5149 frp = frp->fr_prev;
5150 }
5151 }
5152 }
5153 }
5154 #endif /* FEAT_VERTSPLIT */
5155
5156 /*
5157 * Check 'winminheight' for a valid value.
5158 */
5159 void
5160 win_setminheight()
5161 {
5162 int room;
5163 int first = TRUE;
5164 win_T *wp;
5165
5166 /* loop until there is a 'winminheight' that is possible */
5167 while (p_wmh > 0)
5168 {
5169 /* TODO: handle vertical splits */
5170 room = -p_wh;
5171 for (wp = firstwin; wp != NULL; wp = wp->w_next)
5172 room += wp->w_height - p_wmh;
5173 if (room >= 0)
5174 break;
5175 --p_wmh;
5176 if (first)
5177 {
5178 EMSG(_(e_noroom));
5179 first = FALSE;
5180 }
5181 }
5182 }
5183
5184 #ifdef FEAT_MOUSE
5185
5186 /*
5187 * Status line of dragwin is dragged "offset" lines down (negative is up).
5188 */
5189 void
5190 win_drag_status_line(dragwin, offset)
5191 win_T *dragwin;
5192 int offset;
5193 {
5194 frame_T *curfr;
5195 frame_T *fr;
5196 int room;
5197 int row;
5198 int up; /* if TRUE, drag status line up, otherwise down */
5199 int n;
5200
5201 fr = dragwin->w_frame;
5202 curfr = fr;
5203 if (fr != topframe) /* more than one window */
5204 {
5205 fr = fr->fr_parent;
5206 /* When the parent frame is not a column of frames, its parent should
5207 * be. */
5208 if (fr->fr_layout != FR_COL)
5209 {
5210 curfr = fr;
5211 if (fr != topframe) /* only a row of windows, may drag statusline */
5212 fr = fr->fr_parent;
5213 }
5214 }
5215
5216 /* If this is the last frame in a column, may want to resize the parent
5217 * frame instead (go two up to skip a row of frames). */
5218 while (curfr != topframe && curfr->fr_next == NULL)
5219 {
5220 if (fr != topframe)
5221 fr = fr->fr_parent;
5222 curfr = fr;
5223 if (fr != topframe)
5224 fr = fr->fr_parent;
5225 }
5226
5227 if (offset < 0) /* drag up */
5228 {
5229 up = TRUE;
5230 offset = -offset;
5231 /* sum up the room of the current frame and above it */
5232 if (fr == curfr)
5233 {
5234 /* only one window */
5235 room = fr->fr_height - frame_minheight(fr, NULL);
5236 }
5237 else
5238 {
5239 room = 0;
5240 for (fr = fr->fr_child; ; fr = fr->fr_next)
5241 {
5242 room += fr->fr_height - frame_minheight(fr, NULL);
5243 if (fr == curfr)
5244 break;
5245 }
5246 }
5247 fr = curfr->fr_next; /* put fr at frame that grows */
5248 }
5249 else /* drag down */
5250 {
5251 up = FALSE;
5252 /*
5253 * Only dragging the last status line can reduce p_ch.
5254 */
5255 room = Rows - cmdline_row;
5256 if (curfr->fr_next == NULL)
5257 room -= 1;
5258 else
5259 room -= p_ch;
5260 if (room < 0)
5261 room = 0;
5262 /* sum up the room of frames below of the current one */
5263 for (fr = curfr->fr_next; fr != NULL; fr = fr->fr_next)
5264 room += fr->fr_height - frame_minheight(fr, NULL);
5265 fr = curfr; /* put fr at window that grows */
5266 }
5267
5268 if (room < offset) /* Not enough room */
5269 offset = room; /* Move as far as we can */
5270 if (offset <= 0)
5271 return;
5272
5273 /*
5274 * Grow frame fr by "offset" lines.
5275 * Doesn't happen when dragging the last status line up.
5276 */
5277 if (fr != NULL)
5278 frame_new_height(fr, fr->fr_height + offset, up, FALSE);
5279
5280 if (up)
5281 fr = curfr; /* current frame gets smaller */
5282 else
5283 fr = curfr->fr_next; /* next frame gets smaller */
5284
5285 /*
5286 * Now make the other frames smaller.
5287 */
5288 while (fr != NULL && offset > 0)
5289 {
5290 n = frame_minheight(fr, NULL);
5291 if (fr->fr_height - offset <= n)
5292 {
5293 offset -= fr->fr_height - n;
5294 frame_new_height(fr, n, !up, FALSE);
5295 }
5296 else
5297 {
5298 frame_new_height(fr, fr->fr_height - offset, !up, FALSE);
5299 break;
5300 }
5301 if (up)
5302 fr = fr->fr_prev;
5303 else
5304 fr = fr->fr_next;
5305 }
5306 row = win_comp_pos();
5307 screen_fill(row, cmdline_row, 0, (int)Columns, ' ', ' ', 0);
5308 cmdline_row = row;
5309 p_ch = Rows - cmdline_row;
5310 if (p_ch < 1)
5311 p_ch = 1;
5312 curtab->tp_ch_used = p_ch;
5313 redraw_all_later(SOME_VALID);
5314 showmode();
5315 }
5316
5317 #ifdef FEAT_VERTSPLIT
5318 /*
5319 * Separator line of dragwin is dragged "offset" lines right (negative is left).
5320 */
5321 void
5322 win_drag_vsep_line(dragwin, offset)
5323 win_T *dragwin;
5324 int offset;
5325 {
5326 frame_T *curfr;
5327 frame_T *fr;
5328 int room;
5329 int left; /* if TRUE, drag separator line left, otherwise right */
5330 int n;
5331
5332 fr = dragwin->w_frame;
5333 if (fr == topframe) /* only one window (cannot happen?) */
5334 return;
5335 curfr = fr;
5336 fr = fr->fr_parent;
5337 /* When the parent frame is not a row of frames, its parent should be. */
5338 if (fr->fr_layout != FR_ROW)
5339 {
5340 if (fr == topframe) /* only a column of windows (cannot happen?) */
5341 return;
5342 curfr = fr;
5343 fr = fr->fr_parent;
5344 }
5345
5346 /* If this is the last frame in a row, may want to resize a parent
5347 * frame instead. */
5348 while (curfr->fr_next == NULL)
5349 {
5350 if (fr == topframe)
5351 break;
5352 curfr = fr;
5353 fr = fr->fr_parent;
5354 if (fr != topframe)
5355 {
5356 curfr = fr;
5357 fr = fr->fr_parent;
5358 }
5359 }
5360
5361 if (offset < 0) /* drag left */
5362 {
5363 left = TRUE;
5364 offset = -offset;
5365 /* sum up the room of the current frame and left of it */
5366 room = 0;
5367 for (fr = fr->fr_child; ; fr = fr->fr_next)
5368 {
5369 room += fr->fr_width - frame_minwidth(fr, NULL);
5370 if (fr == curfr)
5371 break;
5372 }
5373 fr = curfr->fr_next; /* put fr at frame that grows */
5374 }
5375 else /* drag right */
5376 {
5377 left = FALSE;
5378 /* sum up the room of frames right of the current one */
5379 room = 0;
5380 for (fr = curfr->fr_next; fr != NULL; fr = fr->fr_next)
5381 room += fr->fr_width - frame_minwidth(fr, NULL);
5382 fr = curfr; /* put fr at window that grows */
5383 }
5384
5385 if (room < offset) /* Not enough room */
5386 offset = room; /* Move as far as we can */
5387 if (offset <= 0) /* No room at all, quit. */
5388 return;
5389
5390 /* grow frame fr by offset lines */
5391 frame_new_width(fr, fr->fr_width + offset, left, FALSE);
5392
5393 /* shrink other frames: current and at the left or at the right */
5394 if (left)
5395 fr = curfr; /* current frame gets smaller */
5396 else
5397 fr = curfr->fr_next; /* next frame gets smaller */
5398
5399 while (fr != NULL && offset > 0)
5400 {
5401 n = frame_minwidth(fr, NULL);
5402 if (fr->fr_width - offset <= n)
5403 {
5404 offset -= fr->fr_width - n;
5405 frame_new_width(fr, n, !left, FALSE);
5406 }
5407 else
5408 {
5409 frame_new_width(fr, fr->fr_width - offset, !left, FALSE);
5410 break;
5411 }
5412 if (left)
5413 fr = fr->fr_prev;
5414 else
5415 fr = fr->fr_next;
5416 }
5417 (void)win_comp_pos();
5418 redraw_all_later(NOT_VALID);
5419 }
5420 #endif /* FEAT_VERTSPLIT */
5421 #endif /* FEAT_MOUSE */
5422
5423 #endif /* FEAT_WINDOWS */
5424
5425 /*
5426 * Set the height of a window.
5427 * This takes care of the things inside the window, not what happens to the
5428 * window position, the frame or to other windows.
5429 */
5430 static void
5431 win_new_height(wp, height)
5432 win_T *wp;
5433 int height;
5434 {
5435 linenr_T lnum;
5436 int sline, line_size;
5437 #define FRACTION_MULT 16384L
5438
5439 /* Don't want a negative height. Happens when splitting a tiny window.
5440 * Will equalize heights soon to fix it. */
5441 if (height < 0)
5442 height = 0;
5443 if (wp->w_height == height)
5444 return; /* nothing to do */
5445
5446 if (wp->w_wrow != wp->w_prev_fraction_row && wp->w_height > 0)
5447 wp->w_fraction = ((long)wp->w_wrow * FRACTION_MULT
5448 + FRACTION_MULT / 2) / (long)wp->w_height;
5449
5450 wp->w_height = height;
5451 wp->w_skipcol = 0;
5452
5453 /* Don't change w_topline when height is zero. Don't set w_topline when
5454 * 'scrollbind' is set and this isn't the current window. */
5455 if (height > 0
5456 #ifdef FEAT_SCROLLBIND
5457 && (!wp->w_p_scb || wp == curwin)
5458 #endif
5459 )
5460 {
5461 /*
5462 * Find a value for w_topline that shows the cursor at the same
5463 * relative position in the window as before (more or less).
5464 */
5465 lnum = wp->w_cursor.lnum;
5466 if (lnum < 1) /* can happen when starting up */
5467 lnum = 1;
5468 wp->w_wrow = ((long)wp->w_fraction * (long)height - 1L) / FRACTION_MULT;
5469 line_size = plines_win_col(wp, lnum, (long)(wp->w_cursor.col)) - 1;
5470 sline = wp->w_wrow - line_size;
5471
5472 if (sline >= 0)
5473 {
5474 /* Make sure the whole cursor line is visible, if possible. */
5475 int rows = plines_win(wp, lnum, FALSE);
5476
5477 if (sline > wp->w_height - rows)
5478 {
5479 sline = wp->w_height - rows;
5480 wp->w_wrow -= rows - line_size;
5481 }
5482 }
5483
5484 if (sline < 0)
5485 {
5486 /*
5487 * Cursor line would go off top of screen if w_wrow was this high.
5488 * Make cursor line the first line in the window. If not enough
5489 * room use w_skipcol;
5490 */
5491 wp->w_wrow = line_size;
5492 if (wp->w_wrow >= wp->w_height
5493 && (W_WIDTH(wp) - win_col_off(wp)) > 0)
5494 {
5495 wp->w_skipcol += W_WIDTH(wp) - win_col_off(wp);
5496 --wp->w_wrow;
5497 while (wp->w_wrow >= wp->w_height)
5498 {
5499 wp->w_skipcol += W_WIDTH(wp) - win_col_off(wp)
5500 + win_col_off2(wp);
5501 --wp->w_wrow;
5502 }
5503 }
5504 }
5505 else
5506 {
5507 while (sline > 0 && lnum > 1)
5508 {
5509 #ifdef FEAT_FOLDING
5510 hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL);
5511 if (lnum == 1)
5512 {
5513 /* first line in buffer is folded */
5514 line_size = 1;
5515 --sline;
5516 break;
5517 }
5518 #endif
5519 --lnum;
5520 #ifdef FEAT_DIFF
5521 if (lnum == wp->w_topline)
5522 line_size = plines_win_nofill(wp, lnum, TRUE)
5523 + wp->w_topfill;
5524 else
5525 #endif
5526 line_size = plines_win(wp, lnum, TRUE);
5527 sline -= line_size;
5528 }
5529
5530 if (sline < 0)
5531 {
5532 /*
5533 * Line we want at top would go off top of screen. Use next
5534 * line instead.
5535 */
5536 #ifdef FEAT_FOLDING
5537 hasFoldingWin(wp, lnum, NULL, &lnum, TRUE, NULL);
5538 #endif
5539 lnum++;
5540 wp->w_wrow -= line_size + sline;
5541 }
5542 else if (sline > 0)
5543 {
5544 /* First line of file reached, use that as topline. */
5545 lnum = 1;
5546 wp->w_wrow -= sline;
5547 }
5548 }
5549 set_topline(wp, lnum);
5550 }
5551
5552 if (wp == curwin)
5553 {
5554 if (p_so)
5555 update_topline();
5556 curs_columns(FALSE); /* validate w_wrow */
5557 }
5558 wp->w_prev_fraction_row = wp->w_wrow;
5559
5560 win_comp_scroll(wp);
5561 redraw_win_later(wp, SOME_VALID);
5562 #ifdef FEAT_WINDOWS
5563 wp->w_redr_status = TRUE;
5564 #endif
5565 invalidate_botline_win(wp);
5566 }
5567
5568 #ifdef FEAT_VERTSPLIT
5569 /*
5570 * Set the width of a window.
5571 */
5572 static void
5573 win_new_width(wp, width)
5574 win_T *wp;
5575 int width;
5576 {
5577 wp->w_width = width;
5578 wp->w_lines_valid = 0;
5579 changed_line_abv_curs_win(wp);
5580 invalidate_botline_win(wp);
5581 if (wp == curwin)
5582 {
5583 update_topline();
5584 curs_columns(TRUE); /* validate w_wrow */
5585 }
5586 redraw_win_later(wp, NOT_VALID);
5587 wp->w_redr_status = TRUE;
5588 }
5589 #endif
5590
5591 void
5592 win_comp_scroll(wp)
5593 win_T *wp;
5594 {
5595 wp->w_p_scr = ((unsigned)wp->w_height >> 1);
5596 if (wp->w_p_scr == 0)
5597 wp->w_p_scr = 1;
5598 }
5599
5600 /*
5601 * command_height: called whenever p_ch has been changed
5602 */
5603 void
5604 command_height()
5605 {
5606 #ifdef FEAT_WINDOWS
5607 int h;
5608 frame_T *frp;
5609 int old_p_ch = curtab->tp_ch_used;
5610
5611 /* Use the value of p_ch that we remembered. This is needed for when the
5612 * GUI starts up, we can't be sure in what order things happen. And when
5613 * p_ch was changed in another tab page. */
5614 curtab->tp_ch_used = p_ch;
5615
5616 /* Find bottom frame with width of screen. */
5617 frp = lastwin->w_frame;
5618 # ifdef FEAT_VERTSPLIT
5619 while (frp->fr_width != Columns && frp->fr_parent != NULL)
5620 frp = frp->fr_parent;
5621 # endif
5622
5623 /* Avoid changing the height of a window with 'winfixheight' set. */
5624 while (frp->fr_prev != NULL && frp->fr_layout == FR_LEAF
5625 && frp->fr_win->w_p_wfh)
5626 frp = frp->fr_prev;
5627
5628 if (starting != NO_SCREEN)
5629 {
5630 cmdline_row = Rows - p_ch;
5631
5632 if (p_ch > old_p_ch) /* p_ch got bigger */
5633 {
5634 while (p_ch > old_p_ch)
5635 {
5636 if (frp == NULL)
5637 {
5638 EMSG(_(e_noroom));
5639 p_ch = old_p_ch;
5640 curtab->tp_ch_used = p_ch;
5641 cmdline_row = Rows - p_ch;
5642 break;
5643 }
5644 h = frp->fr_height - frame_minheight(frp, NULL);
5645 if (h > p_ch - old_p_ch)
5646 h = p_ch - old_p_ch;
5647 old_p_ch += h;
5648 frame_add_height(frp, -h);
5649 frp = frp->fr_prev;
5650 }
5651
5652 /* Recompute window positions. */
5653 (void)win_comp_pos();
5654
5655 /* clear the lines added to cmdline */
5656 if (full_screen)
5657 screen_fill((int)(cmdline_row), (int)Rows, 0,
5658 (int)Columns, ' ', ' ', 0);
5659 msg_row = cmdline_row;
5660 redraw_cmdline = TRUE;
5661 return;
5662 }
5663
5664 if (msg_row < cmdline_row)
5665 msg_row = cmdline_row;
5666 redraw_cmdline = TRUE;
5667 }
5668 frame_add_height(frp, (int)(old_p_ch - p_ch));
5669
5670 /* Recompute window positions. */
5671 if (frp != lastwin->w_frame)
5672 (void)win_comp_pos();
5673 #else
5674 cmdline_row = Rows - p_ch;
5675 win_setheight(cmdline_row);
5676 #endif
5677 }
5678
5679 #if defined(FEAT_WINDOWS) || defined(PROTO)
5680 /*
5681 * Resize frame "frp" to be "n" lines higher (negative for less high).
5682 * Also resize the frames it is contained in.
5683 */
5684 static void
5685 frame_add_height(frp, n)
5686 frame_T *frp;
5687 int n;
5688 {
5689 frame_new_height(frp, frp->fr_height + n, FALSE, FALSE);
5690 for (;;)
5691 {
5692 frp = frp->fr_parent;
5693 if (frp == NULL)
5694 break;
5695 frp->fr_height += n;
5696 }
5697 }
5698
5699 /*
5700 * Add or remove a status line for the bottom window(s), according to the
5701 * value of 'laststatus'.
5702 */
5703 void
5704 last_status(morewin)
5705 int morewin; /* pretend there are two or more windows */
5706 {
5707 /* Don't make a difference between horizontal or vertical split. */
5708 last_status_rec(topframe, (p_ls == 2
5709 || (p_ls == 1 && (morewin || lastwin != firstwin))));
5710 }
5711
5712 static void
5713 last_status_rec(fr, statusline)
5714 frame_T *fr;
5715 int statusline;
5716 {
5717 frame_T *fp;
5718 win_T *wp;
5719
5720 if (fr->fr_layout == FR_LEAF)
5721 {
5722 wp = fr->fr_win;
5723 if (wp->w_status_height != 0 && !statusline)
5724 {
5725 /* remove status line */
5726 win_new_height(wp, wp->w_height + 1);
5727 wp->w_status_height = 0;
5728 comp_col();
5729 }
5730 else if (wp->w_status_height == 0 && statusline)
5731 {
5732 /* Find a frame to take a line from. */
5733 fp = fr;
5734 while (fp->fr_height <= frame_minheight(fp, NULL))
5735 {
5736 if (fp == topframe)
5737 {
5738 EMSG(_(e_noroom));
5739 return;
5740 }
5741 /* In a column of frames: go to frame above. If already at
5742 * the top or in a row of frames: go to parent. */
5743 if (fp->fr_parent->fr_layout == FR_COL && fp->fr_prev != NULL)
5744 fp = fp->fr_prev;
5745 else
5746 fp = fp->fr_parent;
5747 }
5748 wp->w_status_height = 1;
5749 if (fp != fr)
5750 {
5751 frame_new_height(fp, fp->fr_height - 1, FALSE, FALSE);
5752 frame_fix_height(wp);
5753 (void)win_comp_pos();
5754 }
5755 else
5756 win_new_height(wp, wp->w_height - 1);
5757 comp_col();
5758 redraw_all_later(SOME_VALID);
5759 }
5760 }
5761 #ifdef FEAT_VERTSPLIT
5762 else if (fr->fr_layout == FR_ROW)
5763 {
5764 /* vertically split windows, set status line for each one */
5765 for (fp = fr->fr_child; fp != NULL; fp = fp->fr_next)
5766 last_status_rec(fp, statusline);
5767 }
5768 #endif
5769 else
5770 {
5771 /* horizontally split window, set status line for last one */
5772 for (fp = fr->fr_child; fp->fr_next != NULL; fp = fp->fr_next)
5773 ;
5774 last_status_rec(fp, statusline);
5775 }
5776 }
5777
5778 /*
5779 * Return the number of lines used by the tab page line.
5780 */
5781 int
5782 tabline_height()
5783 {
5784 #ifdef FEAT_GUI_TABLINE
5785 /* When the GUI has the tabline then this always returns zero. */
5786 if (gui_use_tabline())
5787 return 0;
5788 #endif
5789 switch (p_stal)
5790 {
5791 case 0: return 0;
5792 case 1: return (first_tabpage->tp_next == NULL) ? 0 : 1;
5793 }
5794 return 1;
5795 }
5796
5797 #endif /* FEAT_WINDOWS */
5798
5799 #if defined(FEAT_SEARCHPATH) || defined(PROTO)
5800 /*
5801 * Get the file name at the cursor.
5802 * If Visual mode is active, use the selected text if it's in one line.
5803 * Returns the name in allocated memory, NULL for failure.
5804 */
5805 char_u *
5806 grab_file_name(count, file_lnum)
5807 long count;
5808 linenr_T *file_lnum;
5809 {
5810 # ifdef FEAT_VISUAL
5811 if (VIsual_active)
5812 {
5813 int len;
5814 char_u *ptr;
5815
5816 if (get_visual_text(NULL, &ptr, &len) == FAIL)
5817 return NULL;
5818 return find_file_name_in_path(ptr, len,
5819 FNAME_MESS|FNAME_EXP|FNAME_REL, count, curbuf->b_ffname);
5820 }
5821 # endif
5822 return file_name_at_cursor(FNAME_MESS|FNAME_HYP|FNAME_EXP|FNAME_REL, count,
5823 file_lnum);
5824
5825 }
5826
5827 /*
5828 * Return the file name under or after the cursor.
5829 *
5830 * The 'path' option is searched if the file name is not absolute.
5831 * The string returned has been alloc'ed and should be freed by the caller.
5832 * NULL is returned if the file name or file is not found.
5833 *
5834 * options:
5835 * FNAME_MESS give error messages
5836 * FNAME_EXP expand to path
5837 * FNAME_HYP check for hypertext link
5838 * FNAME_INCL apply "includeexpr"
5839 */
5840 char_u *
5841 file_name_at_cursor(options, count, file_lnum)
5842 int options;
5843 long count;
5844 linenr_T *file_lnum;
5845 {
5846 return file_name_in_line(ml_get_curline(),
5847 curwin->w_cursor.col, options, count, curbuf->b_ffname,
5848 file_lnum);
5849 }
5850
5851 /*
5852 * Return the name of the file under or after ptr[col].
5853 * Otherwise like file_name_at_cursor().
5854 */
5855 char_u *
5856 file_name_in_line(line, col, options, count, rel_fname, file_lnum)
5857 char_u *line;
5858 int col;
5859 int options;
5860 long count;
5861 char_u *rel_fname; /* file we are searching relative to */
5862 linenr_T *file_lnum; /* line number after the file name */
5863 {
5864 char_u *ptr;
5865 int len;
5866
5867 /*
5868 * search forward for what could be the start of a file name
5869 */
5870 ptr = line + col;
5871 while (*ptr != NUL && !vim_isfilec(*ptr))
5872 mb_ptr_adv(ptr);
5873 if (*ptr == NUL) /* nothing found */
5874 {
5875 if (options & FNAME_MESS)
5876 EMSG(_("E446: No file name under cursor"));
5877 return NULL;
5878 }
5879
5880 /*
5881 * Search backward for first char of the file name.
5882 * Go one char back to ":" before "//" even when ':' is not in 'isfname'.
5883 */
5884 while (ptr > line)
5885 {
5886 #ifdef FEAT_MBYTE
5887 if (has_mbyte && (len = (*mb_head_off)(line, ptr - 1)) > 0)
5888 ptr -= len + 1;
5889 else
5890 #endif
5891 if (vim_isfilec(ptr[-1])
5892 || ((options & FNAME_HYP) && path_is_url(ptr - 1)))
5893 --ptr;
5894 else
5895 break;
5896 }
5897
5898 /*
5899 * Search forward for the last char of the file name.
5900 * Also allow "://" when ':' is not in 'isfname'.
5901 */
5902 len = 0;
5903 while (vim_isfilec(ptr[len])
5904 || ((options & FNAME_HYP) && path_is_url(ptr + len)))
5905 #ifdef FEAT_MBYTE
5906 if (has_mbyte)
5907 len += (*mb_ptr2len)(ptr + len);
5908 else
5909 #endif
5910 ++len;
5911
5912 /*
5913 * If there is trailing punctuation, remove it.
5914 * But don't remove "..", could be a directory name.
5915 */
5916 if (len > 2 && vim_strchr((char_u *)".,:;!", ptr[len - 1]) != NULL
5917 && ptr[len - 2] != '.')
5918 --len;
5919
5920 if (file_lnum != NULL)
5921 {
5922 char_u *p;
5923
5924 /* Get the number after the file name and a separator character */
5925 p = ptr + len;
5926 p = skipwhite(p);
5927 if (*p != NUL)
5928 {
5929 if (!isdigit(*p))
5930 ++p; /* skip the separator */
5931 p = skipwhite(p);
5932 if (isdigit(*p))
5933 *file_lnum = (int)getdigits(&p);
5934 }
5935 }
5936
5937 return find_file_name_in_path(ptr, len, options, count, rel_fname);
5938 }
5939
5940 # if defined(FEAT_FIND_ID) && defined(FEAT_EVAL)
5941 static char_u *eval_includeexpr __ARGS((char_u *ptr, int len));
5942
5943 static char_u *
5944 eval_includeexpr(ptr, len)
5945 char_u *ptr;
5946 int len;
5947 {
5948 char_u *res;
5949
5950 set_vim_var_string(VV_FNAME, ptr, len);
5951 res = eval_to_string_safe(curbuf->b_p_inex, NULL,
5952 was_set_insecurely((char_u *)"includeexpr", OPT_LOCAL));
5953 set_vim_var_string(VV_FNAME, NULL, 0);
5954 return res;
5955 }
5956 #endif
5957
5958 /*
5959 * Return the name of the file ptr[len] in 'path'.
5960 * Otherwise like file_name_at_cursor().
5961 */
5962 char_u *
5963 find_file_name_in_path(ptr, len, options, count, rel_fname)
5964 char_u *ptr;
5965 int len;
5966 int options;
5967 long count;
5968 char_u *rel_fname; /* file we are searching relative to */
5969 {
5970 char_u *file_name;
5971 int c;
5972 # if defined(FEAT_FIND_ID) && defined(FEAT_EVAL)
5973 char_u *tofree = NULL;
5974
5975 if ((options & FNAME_INCL) && *curbuf->b_p_inex != NUL)
5976 {
5977 tofree = eval_includeexpr(ptr, len);
5978 if (tofree != NULL)
5979 {
5980 ptr = tofree;
5981 len = (int)STRLEN(ptr);
5982 }
5983 }
5984 # endif
5985
5986 if (options & FNAME_EXP)
5987 {
5988 file_name = find_file_in_path(ptr, len, options & ~FNAME_MESS,
5989 TRUE, rel_fname);
5990
5991 # if defined(FEAT_FIND_ID) && defined(FEAT_EVAL)
5992 /*
5993 * If the file could not be found in a normal way, try applying
5994 * 'includeexpr' (unless done already).
5995 */
5996 if (file_name == NULL
5997 && !(options & FNAME_INCL) && *curbuf->b_p_inex != NUL)
5998 {
5999 tofree = eval_includeexpr(ptr, len);
6000 if (tofree != NULL)
6001 {
6002 ptr = tofree;
6003 len = (int)STRLEN(ptr);
6004 file_name = find_file_in_path(ptr, len, options & ~FNAME_MESS,
6005 TRUE, rel_fname);
6006 }
6007 }
6008 # endif
6009 if (file_name == NULL && (options & FNAME_MESS))
6010 {
6011 c = ptr[len];
6012 ptr[len] = NUL;
6013 EMSG2(_("E447: Can't find file \"%s\" in path"), ptr);
6014 ptr[len] = c;
6015 }
6016
6017 /* Repeat finding the file "count" times. This matters when it
6018 * appears several times in the path. */
6019 while (file_name != NULL && --count > 0)
6020 {
6021 vim_free(file_name);
6022 file_name = find_file_in_path(ptr, len, options, FALSE, rel_fname);
6023 }
6024 }
6025 else
6026 file_name = vim_strnsave(ptr, len);
6027
6028 # if defined(FEAT_FIND_ID) && defined(FEAT_EVAL)
6029 vim_free(tofree);
6030 # endif
6031
6032 return file_name;
6033 }
6034 #endif /* FEAT_SEARCHPATH */
6035
6036 /*
6037 * Check if the "://" of a URL is at the pointer, return URL_SLASH.
6038 * Also check for ":\\", which MS Internet Explorer accepts, return
6039 * URL_BACKSLASH.
6040 */
6041 static int
6042 path_is_url(p)
6043 char_u *p;
6044 {
6045 if (STRNCMP(p, "://", (size_t)3) == 0)
6046 return URL_SLASH;
6047 else if (STRNCMP(p, ":\\\\", (size_t)3) == 0)
6048 return URL_BACKSLASH;
6049 return 0;
6050 }
6051
6052 /*
6053 * Check if "fname" starts with "name://". Return URL_SLASH if it does.
6054 * Return URL_BACKSLASH for "name:\\".
6055 * Return zero otherwise.
6056 */
6057 int
6058 path_with_url(fname)
6059 char_u *fname;
6060 {
6061 char_u *p;
6062
6063 for (p = fname; isalpha(*p); ++p)
6064 ;
6065 return path_is_url(p);
6066 }
6067
6068 /*
6069 * Return TRUE if "name" is a full (absolute) path name or URL.
6070 */
6071 int
6072 vim_isAbsName(name)
6073 char_u *name;
6074 {
6075 return (path_with_url(name) != 0 || mch_isFullName(name));
6076 }
6077
6078 /*
6079 * Get absolute file name into buffer "buf[len]".
6080 *
6081 * return FAIL for failure, OK otherwise
6082 */
6083 int
6084 vim_FullName(fname, buf, len, force)
6085 char_u *fname, *buf;
6086 int len;
6087 int force; /* force expansion even when already absolute */
6088 {
6089 int retval = OK;
6090 int url;
6091
6092 *buf = NUL;
6093 if (fname == NULL)
6094 return FAIL;
6095
6096 url = path_with_url(fname);
6097 if (!url)
6098 retval = mch_FullName(fname, buf, len, force);
6099 if (url || retval == FAIL)
6100 {
6101 /* something failed; use the file name (truncate when too long) */
6102 vim_strncpy(buf, fname, len - 1);
6103 }
6104 #if defined(MACOS_CLASSIC) || defined(OS2) || defined(MSDOS) || defined(MSWIN)
6105 slash_adjust(buf);
6106 #endif
6107 return retval;
6108 }
6109
6110 /*
6111 * Return the minimal number of rows that is needed on the screen to display
6112 * the current number of windows.
6113 */
6114 int
6115 min_rows()
6116 {
6117 int total;
6118 #ifdef FEAT_WINDOWS
6119 tabpage_T *tp;
6120 int n;
6121 #endif
6122
6123 if (firstwin == NULL) /* not initialized yet */
6124 return MIN_LINES;
6125
6126 #ifdef FEAT_WINDOWS
6127 total = 0;
6128 for (tp = first_tabpage; tp != NULL; tp = tp->tp_next)
6129 {
6130 n = frame_minheight(tp->tp_topframe, NULL);
6131 if (total < n)
6132 total = n;
6133 }
6134 total += tabline_height();
6135 #else
6136 total = 1; /* at least one window should have a line! */
6137 #endif
6138 total += 1; /* count the room for the command line */
6139 return total;
6140 }
6141
6142 /*
6143 * Return TRUE if there is only one window (in the current tab page), not
6144 * counting a help or preview window, unless it is the current window.
6145 * Does not count "aucmd_win".
6146 */
6147 int
6148 only_one_window()
6149 {
6150 #ifdef FEAT_WINDOWS
6151 int count = 0;
6152 win_T *wp;
6153
6154 /* If there is another tab page there always is another window. */
6155 if (first_tabpage->tp_next != NULL)
6156 return FALSE;
6157
6158 for (wp = firstwin; wp != NULL; wp = wp->w_next)
6159 if ((!((wp->w_buffer->b_help && !curbuf->b_help)
6160 # ifdef FEAT_QUICKFIX
6161 || wp->w_p_pvw
6162 # endif
6163 ) || wp == curwin)
6164 # ifdef FEAT_AUTOCMD
6165 && wp != aucmd_win
6166 # endif
6167 )
6168 ++count;
6169 return (count <= 1);
6170 #else
6171 return TRUE;
6172 #endif
6173 }
6174
6175 #if defined(FEAT_WINDOWS) || defined(FEAT_AUTOCMD) || defined(PROTO)
6176 /*
6177 * Correct the cursor line number in other windows. Used after changing the
6178 * current buffer, and before applying autocommands.
6179 * When "do_curwin" is TRUE, also check current window.
6180 */
6181 void
6182 check_lnums(do_curwin)
6183 int do_curwin;
6184 {
6185 win_T *wp;
6186
6187 #ifdef FEAT_WINDOWS
6188 tabpage_T *tp;
6189
6190 FOR_ALL_TAB_WINDOWS(tp, wp)
6191 if ((do_curwin || wp != curwin) && wp->w_buffer == curbuf)
6192 #else
6193 wp = curwin;
6194 if (do_curwin)
6195 #endif
6196 {
6197 if (wp->w_cursor.lnum > curbuf->b_ml.ml_line_count)
6198 wp->w_cursor.lnum = curbuf->b_ml.ml_line_count;
6199 if (wp->w_topline > curbuf->b_ml.ml_line_count)
6200 wp->w_topline = curbuf->b_ml.ml_line_count;
6201 }
6202 }
6203 #endif
6204
6205 #if defined(FEAT_WINDOWS) || defined(PROTO)
6206
6207 /*
6208 * A snapshot of the window sizes, to restore them after closing the help
6209 * window.
6210 * Only these fields are used:
6211 * fr_layout
6212 * fr_width
6213 * fr_height
6214 * fr_next
6215 * fr_child
6216 * fr_win (only valid for the old curwin, NULL otherwise)
6217 */
6218
6219 /*
6220 * Create a snapshot of the current frame sizes.
6221 */
6222 void
6223 make_snapshot(idx)
6224 int idx;
6225 {
6226 clear_snapshot(curtab, idx);
6227 make_snapshot_rec(topframe, &curtab->tp_snapshot[idx]);
6228 }
6229
6230 static void
6231 make_snapshot_rec(fr, frp)
6232 frame_T *fr;
6233 frame_T **frp;
6234 {
6235 *frp = (frame_T *)alloc_clear((unsigned)sizeof(frame_T));
6236 if (*frp == NULL)
6237 return;
6238 (*frp)->fr_layout = fr->fr_layout;
6239 # ifdef FEAT_VERTSPLIT
6240 (*frp)->fr_width = fr->fr_width;
6241 # endif
6242 (*frp)->fr_height = fr->fr_height;
6243 if (fr->fr_next != NULL)
6244 make_snapshot_rec(fr->fr_next, &((*frp)->fr_next));
6245 if (fr->fr_child != NULL)
6246 make_snapshot_rec(fr->fr_child, &((*frp)->fr_child));
6247 if (fr->fr_layout == FR_LEAF && fr->fr_win == curwin)
6248 (*frp)->fr_win = curwin;
6249 }
6250
6251 /*
6252 * Remove any existing snapshot.
6253 */
6254 static void
6255 clear_snapshot(tp, idx)
6256 tabpage_T *tp;
6257 int idx;
6258 {
6259 clear_snapshot_rec(tp->tp_snapshot[idx]);
6260 tp->tp_snapshot[idx] = NULL;
6261 }
6262
6263 static void
6264 clear_snapshot_rec(fr)
6265 frame_T *fr;
6266 {
6267 if (fr != NULL)
6268 {
6269 clear_snapshot_rec(fr->fr_next);
6270 clear_snapshot_rec(fr->fr_child);
6271 vim_free(fr);
6272 }
6273 }
6274
6275 /*
6276 * Restore a previously created snapshot, if there is any.
6277 * This is only done if the screen size didn't change and the window layout is
6278 * still the same.
6279 */
6280 void
6281 restore_snapshot(idx, close_curwin)
6282 int idx;
6283 int close_curwin; /* closing current window */
6284 {
6285 win_T *wp;
6286
6287 if (curtab->tp_snapshot[idx] != NULL
6288 # ifdef FEAT_VERTSPLIT
6289 && curtab->tp_snapshot[idx]->fr_width == topframe->fr_width
6290 # endif
6291 && curtab->tp_snapshot[idx]->fr_height == topframe->fr_height
6292 && check_snapshot_rec(curtab->tp_snapshot[idx], topframe) == OK)
6293 {
6294 wp = restore_snapshot_rec(curtab->tp_snapshot[idx], topframe);
6295 win_comp_pos();
6296 if (wp != NULL && close_curwin)
6297 win_goto(wp);
6298 redraw_all_later(CLEAR);
6299 }
6300 clear_snapshot(curtab, idx);
6301 }
6302
6303 /*
6304 * Check if frames "sn" and "fr" have the same layout, same following frames
6305 * and same children.
6306 */
6307 static int
6308 check_snapshot_rec(sn, fr)
6309 frame_T *sn;
6310 frame_T *fr;
6311 {
6312 if (sn->fr_layout != fr->fr_layout
6313 || (sn->fr_next == NULL) != (fr->fr_next == NULL)
6314 || (sn->fr_child == NULL) != (fr->fr_child == NULL)
6315 || (sn->fr_next != NULL
6316 && check_snapshot_rec(sn->fr_next, fr->fr_next) == FAIL)
6317 || (sn->fr_child != NULL
6318 && check_snapshot_rec(sn->fr_child, fr->fr_child) == FAIL))
6319 return FAIL;
6320 return OK;
6321 }
6322
6323 /*
6324 * Copy the size of snapshot frame "sn" to frame "fr". Do the same for all
6325 * following frames and children.
6326 * Returns a pointer to the old current window, or NULL.
6327 */
6328 static win_T *
6329 restore_snapshot_rec(sn, fr)
6330 frame_T *sn;
6331 frame_T *fr;
6332 {
6333 win_T *wp = NULL;
6334 win_T *wp2;
6335
6336 fr->fr_height = sn->fr_height;
6337 # ifdef FEAT_VERTSPLIT
6338 fr->fr_width = sn->fr_width;
6339 # endif
6340 if (fr->fr_layout == FR_LEAF)
6341 {
6342 frame_new_height(fr, fr->fr_height, FALSE, FALSE);
6343 # ifdef FEAT_VERTSPLIT
6344 frame_new_width(fr, fr->fr_width, FALSE, FALSE);
6345 # endif
6346 wp = sn->fr_win;
6347 }
6348 if (sn->fr_next != NULL)
6349 {
6350 wp2 = restore_snapshot_rec(sn->fr_next, fr->fr_next);
6351 if (wp2 != NULL)
6352 wp = wp2;
6353 }
6354 if (sn->fr_child != NULL)
6355 {
6356 wp2 = restore_snapshot_rec(sn->fr_child, fr->fr_child);
6357 if (wp2 != NULL)
6358 wp = wp2;
6359 }
6360 return wp;
6361 }
6362
6363 #endif
6364
6365 #if (defined(FEAT_GUI) && defined(FEAT_VERTSPLIT)) || defined(PROTO)
6366 /*
6367 * Return TRUE if there is any vertically split window.
6368 */
6369 int
6370 win_hasvertsplit()
6371 {
6372 frame_T *fr;
6373
6374 if (topframe->fr_layout == FR_ROW)
6375 return TRUE;
6376
6377 if (topframe->fr_layout == FR_COL)
6378 for (fr = topframe->fr_child; fr != NULL; fr = fr->fr_next)
6379 if (fr->fr_layout == FR_ROW)
6380 return TRUE;
6381
6382 return FALSE;
6383 }
6384 #endif
6385
6386 #if defined(FEAT_SEARCH_EXTRA) || defined(PROTO)
6387 /*
6388 * Add match to the match list of window 'wp'. The pattern 'pat' will be
6389 * highlighted with the group 'grp' with priority 'prio'.
6390 * Optionally, a desired ID 'id' can be specified (greater than or equal to 1).
6391 * If no particular ID is desired, -1 must be specified for 'id'.
6392 * Return ID of added match, -1 on failure.
6393 */
6394 int
6395 match_add(wp, grp, pat, prio, id)
6396 win_T *wp;
6397 char_u *grp;
6398 char_u *pat;
6399 int prio;
6400 int id;
6401 {
6402 matchitem_T *cur;
6403 matchitem_T *prev;
6404 matchitem_T *m;
6405 int hlg_id;
6406 regprog_T *regprog;
6407
6408 if (*grp == NUL || *pat == NUL)
6409 return -1;
6410 if (id < -1 || id == 0)
6411 {
6412 EMSGN("E799: Invalid ID: %ld (must be greater than or equal to 1)", id);
6413 return -1;
6414 }
6415 if (id != -1)
6416 {
6417 cur = wp->w_match_head;
6418 while (cur != NULL)
6419 {
6420 if (cur->id == id)
6421 {
6422 EMSGN("E801: ID already taken: %ld", id);
6423 return -1;
6424 }
6425 cur = cur->next;
6426 }
6427 }
6428 if ((hlg_id = syn_namen2id(grp, (int)STRLEN(grp))) == 0)
6429 {
6430 EMSG2(_(e_nogroup), grp);
6431 return -1;
6432 }
6433 if ((regprog = vim_regcomp(pat, RE_MAGIC)) == NULL)
6434 {
6435 EMSG2(_(e_invarg2), pat);
6436 return -1;
6437 }
6438
6439 /* Find available match ID. */
6440 while (id == -1)
6441 {
6442 cur = wp->w_match_head;
6443 while (cur != NULL && cur->id != wp->w_next_match_id)
6444 cur = cur->next;
6445 if (cur == NULL)
6446 id = wp->w_next_match_id;
6447 wp->w_next_match_id++;
6448 }
6449
6450 /* Build new match. */
6451 m = (matchitem_T *)alloc(sizeof(matchitem_T));
6452 m->id = id;
6453 m->priority = prio;
6454 m->pattern = vim_strsave(pat);
6455 m->hlg_id = hlg_id;
6456 m->match.regprog = regprog;
6457 m->match.rmm_ic = FALSE;
6458 m->match.rmm_maxcol = 0;
6459
6460 /* Insert new match. The match list is in ascending order with regard to
6461 * the match priorities. */
6462 cur = wp->w_match_head;
6463 prev = cur;
6464 while (cur != NULL && prio >= cur->priority)
6465 {
6466 prev = cur;
6467 cur = cur->next;
6468 }
6469 if (cur == prev)
6470 wp->w_match_head = m;
6471 else
6472 prev->next = m;
6473 m->next = cur;
6474
6475 redraw_later(SOME_VALID);
6476 return id;
6477 }
6478
6479 /*
6480 * Delete match with ID 'id' in the match list of window 'wp'.
6481 * Print error messages if 'perr' is TRUE.
6482 */
6483 int
6484 match_delete(wp, id, perr)
6485 win_T *wp;
6486 int id;
6487 int perr;
6488 {
6489 matchitem_T *cur = wp->w_match_head;
6490 matchitem_T *prev = cur;
6491
6492 if (id < 1)
6493 {
6494 if (perr == TRUE)
6495 EMSGN("E802: Invalid ID: %ld (must be greater than or equal to 1)",
6496 id);
6497 return -1;
6498 }
6499 while (cur != NULL && cur->id != id)
6500 {
6501 prev = cur;
6502 cur = cur->next;
6503 }
6504 if (cur == NULL)
6505 {
6506 if (perr == TRUE)
6507 EMSGN("E803: ID not found: %ld", id);
6508 return -1;
6509 }
6510 if (cur == prev)
6511 wp->w_match_head = cur->next;
6512 else
6513 prev->next = cur->next;
6514 vim_free(cur->match.regprog);
6515 vim_free(cur->pattern);
6516 vim_free(cur);
6517 redraw_later(SOME_VALID);
6518 return 0;
6519 }
6520
6521 /*
6522 * Delete all matches in the match list of window 'wp'.
6523 */
6524 void
6525 clear_matches(wp)
6526 win_T *wp;
6527 {
6528 matchitem_T *m;
6529
6530 while (wp->w_match_head != NULL)
6531 {
6532 m = wp->w_match_head->next;
6533 vim_free(wp->w_match_head->match.regprog);
6534 vim_free(wp->w_match_head->pattern);
6535 vim_free(wp->w_match_head);
6536 wp->w_match_head = m;
6537 }
6538 redraw_later(SOME_VALID);
6539 }
6540
6541 /*
6542 * Get match from ID 'id' in window 'wp'.
6543 * Return NULL if match not found.
6544 */
6545 matchitem_T *
6546 get_match(wp, id)
6547 win_T *wp;
6548 int id;
6549 {
6550 matchitem_T *cur = wp->w_match_head;
6551
6552 while (cur != NULL && cur->id != id)
6553 cur = cur->next;
6554 return cur;
6555 }
6556 #endif
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