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vim/src/window.c
Bram Moolenaar 325b7a2fb5 updated for version 7.0006
2004-07-05 15:58:32 +00:00

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/* vi:set ts=8 sts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read a list of people who contributed.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
#include "vim.h"
#ifdef HAVE_FCNTL_H
# include <fcntl.h> /* for chdir() */
#endif
static int path_is_url __ARGS((char_u *p));
#if defined(FEAT_WINDOWS) || defined(PROTO)
static int win_split_ins __ARGS((int size, int flags, win_T *newwin, int dir));
static int win_comp_pos __ARGS((void));
static void frame_comp_pos __ARGS((frame_T *topfrp, int *row, int *col));
static void frame_setheight __ARGS((frame_T *curfrp, int height));
#ifdef FEAT_VERTSPLIT
static void frame_setwidth __ARGS((frame_T *curfrp, int width));
#endif
static void win_exchange __ARGS((long));
static void win_rotate __ARGS((int, int));
static void win_totop __ARGS((int size, int flags));
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));
static win_T *winframe_remove __ARGS((win_T *win, int *dirp));
static frame_T *win_altframe __ARGS((win_T *win));
static win_T *frame2win __ARGS((frame_T *frp));
static int frame_has_win __ARGS((frame_T *frp, win_T *wp));
static void frame_new_height __ARGS((frame_T *topfrp, int height, int topfirst, int wfh));
static int frame_fixed_height __ARGS((frame_T *frp));
#ifdef FEAT_VERTSPLIT
static void frame_add_statusline __ARGS((frame_T *frp));
static void frame_new_width __ARGS((frame_T *topfrp, int width, int leftfirst));
static void frame_add_vsep __ARGS((frame_T *frp));
static int frame_minwidth __ARGS((frame_T *topfrp, win_T *next_curwin));
static void frame_fix_width __ARGS((win_T *wp));
#endif
static void frame_fix_height __ARGS((win_T *wp));
static int frame_minheight __ARGS((frame_T *topfrp, win_T *next_curwin));
static void win_enter_ext __ARGS((win_T *wp, int undo_sync, int no_curwin));
static void win_free __ARGS((win_T *wp));
static void win_append __ARGS((win_T *, win_T *));
static void win_remove __ARGS((win_T *));
static void frame_append __ARGS((frame_T *after, frame_T *frp));
static void frame_insert __ARGS((frame_T *before, frame_T *frp));
static void frame_remove __ARGS((frame_T *frp));
#ifdef FEAT_VERTSPLIT
static void win_new_width __ARGS((win_T *wp, int width));
static int win_minheight __ARGS((win_T *wp));
static void win_goto_ver __ARGS((int up, long count));
static void win_goto_hor __ARGS((int left, long count));
#endif
static void frame_add_height __ARGS((frame_T *frp, int n));
static void last_status_rec __ARGS((frame_T *fr, int statusline));
static void make_snapshot __ARGS((void));
static void make_snapshot_rec __ARGS((frame_T *fr, frame_T **frp));
static void clear_snapshot __ARGS((void));
static void clear_snapshot_rec __ARGS((frame_T *fr));
static void restore_snapshot __ARGS((int close_curwin));
static int check_snapshot_rec __ARGS((frame_T *sn, frame_T *fr));
static win_T *restore_snapshot_rec __ARGS((frame_T *sn, frame_T *fr));
#endif /* FEAT_WINDOWS */
static win_T *win_alloc __ARGS((win_T *after));
static void win_new_height __ARGS((win_T *, int));
#define URL_SLASH 1 /* path_is_url() has found "://" */
#define URL_BACKSLASH 2 /* path_is_url() has found ":\\" */
#define NOWIN (win_T *)-1 /* non-exisiting window */
#if defined(FEAT_WINDOWS) || defined(PROTO)
/*
* all CTRL-W window commands are handled here, called from normal_cmd().
*/
void
do_window(nchar, Prenum, xchar)
int nchar;
long Prenum;
int xchar; /* extra char from ":wincmd gx" or NUL */
{
long Prenum1;
win_T *wp;
#if defined(FEAT_SEARCHPATH) || defined(FEAT_FIND_ID)
char_u *ptr;
#endif
#ifdef FEAT_FIND_ID
int type = FIND_DEFINE;
int len;
#endif
char_u cbuf[40];
if (Prenum == 0)
Prenum1 = 1;
else
Prenum1 = Prenum;
#ifdef FEAT_CMDWIN
# define CHECK_CMDWIN if (cmdwin_type != 0) { EMSG(_(e_cmdwin)); break; }
#else
# define CHECK_CMDWIN
#endif
switch (nchar)
{
/* split current window in two parts, horizontally */
case 'S':
case Ctrl_S:
case 's':
CHECK_CMDWIN
#ifdef FEAT_VISUAL
reset_VIsual_and_resel(); /* stop Visual mode */
#endif
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
win_split((int)Prenum, 0);
break;
#ifdef FEAT_VERTSPLIT
/* split current window in two parts, vertically */
case Ctrl_V:
case 'v':
CHECK_CMDWIN
#ifdef FEAT_VISUAL
reset_VIsual_and_resel(); /* stop Visual mode */
#endif
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
win_split((int)Prenum, WSP_VERT);
break;
#endif
/* split current window and edit alternate file */
case Ctrl_HAT:
case '^':
CHECK_CMDWIN
#ifdef FEAT_VISUAL
reset_VIsual_and_resel(); /* stop Visual mode */
#endif
STRCPY(cbuf, "split #");
if (Prenum)
sprintf((char *)cbuf + 7, "%ld", Prenum);
do_cmdline_cmd(cbuf);
break;
/* open new window */
case Ctrl_N:
case 'n':
CHECK_CMDWIN
#ifdef FEAT_VISUAL
reset_VIsual_and_resel(); /* stop Visual mode */
#endif
if (Prenum)
sprintf((char *)cbuf, "%ld", Prenum); /* window height */
else
cbuf[0] = NUL;
STRCAT(cbuf, "new");
do_cmdline_cmd(cbuf);
break;
/* quit current window */
case Ctrl_Q:
case 'q':
#ifdef FEAT_VISUAL
reset_VIsual_and_resel(); /* stop Visual mode */
#endif
do_cmdline_cmd((char_u *)"quit");
break;
/* close current window */
case Ctrl_C:
case 'c':
#ifdef FEAT_VISUAL
reset_VIsual_and_resel(); /* stop Visual mode */
#endif
do_cmdline_cmd((char_u *)"close");
break;
#if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
/* close preview window */
case Ctrl_Z:
case 'z':
CHECK_CMDWIN
#ifdef FEAT_VISUAL
reset_VIsual_and_resel(); /* stop Visual mode */
#endif
do_cmdline_cmd((char_u *)"pclose");
break;
/* cursor to preview window */
case 'P':
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (wp->w_p_pvw)
break;
if (wp == NULL)
EMSG(_("E441: There is no preview window"));
else
win_goto(wp);
break;
#endif
/* close all but current window */
case Ctrl_O:
case 'o':
CHECK_CMDWIN
#ifdef FEAT_VISUAL
reset_VIsual_and_resel(); /* stop Visual mode */
#endif
do_cmdline_cmd((char_u *)"only");
break;
/* cursor to next window with wrap around */
case Ctrl_W:
case 'w':
/* cursor to previous window with wrap around */
case 'W':
CHECK_CMDWIN
if (lastwin == firstwin && Prenum != 1) /* just one window */
beep_flush();
else
{
if (Prenum) /* go to specified window */
{
for (wp = firstwin; --Prenum > 0; )
{
if (wp->w_next == NULL)
break;
else
wp = wp->w_next;
}
}
else
{
if (nchar == 'W') /* go to previous window */
{
wp = curwin->w_prev;
if (wp == NULL)
wp = lastwin; /* wrap around */
}
else /* go to next window */
{
wp = curwin->w_next;
if (wp == NULL)
wp = firstwin; /* wrap around */
}
}
win_goto(wp);
}
break;
/* cursor to window below */
case 'j':
case K_DOWN:
case Ctrl_J:
CHECK_CMDWIN
#ifdef FEAT_VERTSPLIT
win_goto_ver(FALSE, Prenum1);
#else
for (wp = curwin; wp->w_next != NULL && Prenum1-- > 0;
wp = wp->w_next)
;
win_goto(wp);
#endif
break;
/* cursor to window above */
case 'k':
case K_UP:
case Ctrl_K:
CHECK_CMDWIN
#ifdef FEAT_VERTSPLIT
win_goto_ver(TRUE, Prenum1);
#else
for (wp = curwin; wp->w_prev != NULL && Prenum1-- > 0;
wp = wp->w_prev)
;
win_goto(wp);
#endif
break;
#ifdef FEAT_VERTSPLIT
/* cursor to left window */
case 'h':
case K_LEFT:
case Ctrl_H:
case K_BS:
CHECK_CMDWIN
win_goto_hor(TRUE, Prenum1);
break;
/* cursor to right window */
case 'l':
case K_RIGHT:
case Ctrl_L:
CHECK_CMDWIN
win_goto_hor(FALSE, Prenum1);
break;
#endif
/* cursor to top-left window */
case 't':
case Ctrl_T:
win_goto(firstwin);
break;
/* cursor to bottom-right window */
case 'b':
case Ctrl_B:
win_goto(lastwin);
break;
/* cursor to last accessed (previous) window */
case 'p':
case Ctrl_P:
if (prevwin == NULL)
beep_flush();
else
win_goto(prevwin);
break;
/* exchange current and next window */
case 'x':
case Ctrl_X:
CHECK_CMDWIN
win_exchange(Prenum);
break;
/* rotate windows downwards */
case Ctrl_R:
case 'r':
CHECK_CMDWIN
#ifdef FEAT_VISUAL
reset_VIsual_and_resel(); /* stop Visual mode */
#endif
win_rotate(FALSE, (int)Prenum1); /* downwards */
break;
/* rotate windows upwards */
case 'R':
CHECK_CMDWIN
#ifdef FEAT_VISUAL
reset_VIsual_and_resel(); /* stop Visual mode */
#endif
win_rotate(TRUE, (int)Prenum1); /* upwards */
break;
/* move window to the very top/bottom/left/right */
case 'K':
case 'J':
#ifdef FEAT_VERTSPLIT
case 'H':
case 'L':
#endif
CHECK_CMDWIN
win_totop((int)Prenum,
((nchar == 'H' || nchar == 'L') ? WSP_VERT : 0)
| ((nchar == 'H' || nchar == 'K') ? WSP_TOP : WSP_BOT));
break;
/* make all windows the same height */
case '=':
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
win_equal(NULL, FALSE, 'b');
break;
/* increase current window height */
case '+':
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
win_setheight(curwin->w_height + (int)Prenum1);
break;
/* decrease current window height */
case '-':
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
win_setheight(curwin->w_height - (int)Prenum1);
break;
/* set current window height */
case Ctrl__:
case '_':
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
win_setheight(Prenum ? (int)Prenum : 9999);
break;
#ifdef FEAT_VERTSPLIT
/* increase current window width */
case '>':
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
win_setwidth(curwin->w_width + (int)Prenum1);
break;
/* decrease current window width */
case '<':
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
win_setwidth(curwin->w_width - (int)Prenum1);
break;
/* set current window width */
case '|':
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
win_setwidth(Prenum != 0 ? (int)Prenum : 9999);
break;
#endif
/* jump to tag and split window if tag exists (in preview window) */
#if defined(FEAT_QUICKFIX)
case '}':
CHECK_CMDWIN
if (Prenum)
g_do_tagpreview = Prenum;
else
g_do_tagpreview = p_pvh;
/*FALLTHROUGH*/
#endif
case ']':
case Ctrl_RSB:
CHECK_CMDWIN
#ifdef FEAT_VISUAL
reset_VIsual_and_resel(); /* stop Visual mode */
#endif
if (Prenum)
postponed_split = Prenum;
else
postponed_split = -1;
/* Execute the command right here, required when
* "wincmd ]" was used in a function. */
do_nv_ident(Ctrl_RSB, NUL);
break;
#ifdef FEAT_SEARCHPATH
/* edit file name under cursor in a new window */
case 'f':
case Ctrl_F:
CHECK_CMDWIN
#ifdef FEAT_VISUAL
reset_VIsual_and_resel(); /* stop Visual mode */
#endif
ptr = file_name_at_cursor(FNAME_MESS|FNAME_HYP|FNAME_EXP,
Prenum1);
if (ptr != NULL)
{
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
setpcmark();
if (win_split(0, 0) == OK)
{
# ifdef FEAT_SCROLLBIND
curwin->w_p_scb = FALSE;
# endif
(void)do_ecmd(0, ptr, NULL, NULL, ECMD_LASTL,
ECMD_HIDE);
}
vim_free(ptr);
}
break;
#endif
#ifdef FEAT_FIND_ID
/* Go to the first occurence of the identifier under cursor along path in a
* new window -- webb
*/
case 'i': /* Go to any match */
case Ctrl_I:
type = FIND_ANY;
/* FALLTHROUGH */
case 'd': /* Go to definition, using 'define' */
case Ctrl_D:
CHECK_CMDWIN
if ((len = find_ident_under_cursor(&ptr, FIND_IDENT)) == 0)
break;
find_pattern_in_path(ptr, 0, len, TRUE,
Prenum == 0 ? TRUE : FALSE, type,
Prenum1, ACTION_SPLIT, (linenr_T)1, (linenr_T)MAXLNUM);
curwin->w_set_curswant = TRUE;
break;
#endif
/* CTRL-W g extended commands */
case 'g':
case Ctrl_G:
CHECK_CMDWIN
#ifdef USE_ON_FLY_SCROLL
dont_scroll = TRUE; /* disallow scrolling here */
#endif
++no_mapping;
++allow_keys; /* no mapping for xchar, but allow key codes */
if (xchar == NUL)
xchar = safe_vgetc();
#ifdef FEAT_LANGMAP
LANGMAP_ADJUST(xchar, TRUE);
#endif
--no_mapping;
--allow_keys;
#ifdef FEAT_CMDL_INFO
(void)add_to_showcmd(xchar);
#endif
switch (xchar)
{
#if defined(FEAT_QUICKFIX)
case '}':
xchar = Ctrl_RSB;
if (Prenum)
g_do_tagpreview = Prenum;
else
g_do_tagpreview = p_pvh;
/*FALLTHROUGH*/
#endif
case ']':
case Ctrl_RSB:
#ifdef FEAT_VISUAL
reset_VIsual_and_resel(); /* stop Visual mode */
#endif
if (Prenum)
postponed_split = Prenum;
else
postponed_split = -1;
/* Execute the command right here, required when
* "wincmd g}" was used in a function. */
do_nv_ident('g', xchar);
break;
default:
beep_flush();
break;
}
break;
default: beep_flush();
break;
}
}
/*
* split the current window, implements CTRL-W s and :split
*
* "size" is the height or width for the new window, 0 to use half of current
* height or width.
*
* "flags":
* WSP_ROOM: require enough room for new window
* WSP_VERT: vertical split.
* WSP_TOP: open window at the top-left of the shell (help window).
* WSP_BOT: open window at the bottom-right of the shell (quickfix window).
* WSP_HELP: creating the help window, keep layout snapshot
*
* return FAIL for failure, OK otherwise
*/
int
win_split(size, flags)
int size;
int flags;
{
/* Add flags from ":vertical", ":topleft" and ":botright". */
flags |= cmdmod.split;
if ((flags & WSP_TOP) && (flags & WSP_BOT))
{
EMSG(_("E442: Can't split topleft and botright at the same time"));
return FAIL;
}
/* When creating the help window make a snapshot of the window layout.
* Otherwise clear the snapshot, it's now invalid. */
if (flags & WSP_HELP)
make_snapshot();
else
clear_snapshot();
return win_split_ins(size, flags, NULL, 0);
}
/*
* When "newwin" is NULL: split a window in two.
* When "newwin" is not NULL: insert this window at the far
* top/left/right/bottom.
* return FAIL for failure, OK otherwise
*/
static int
win_split_ins(size, flags, newwin, dir)
int size;
int flags;
win_T *newwin;
int dir;
{
win_T *wp = newwin;
win_T *oldwin;
int new_size = size;
int i;
int need_status = 0;
int do_equal = FALSE;
int needed;
int available;
int oldwin_height = 0;
int layout;
frame_T *frp, *curfrp;
int before;
if (flags & WSP_TOP)
oldwin = firstwin;
else if (flags & WSP_BOT)
oldwin = lastwin;
else
oldwin = curwin;
/* add a status line when p_ls == 1 and splitting the first window */
if (lastwin == firstwin && p_ls == 1 && oldwin->w_status_height == 0)
{
if (oldwin->w_height <= p_wmh && newwin == NULL)
{
EMSG(_(e_noroom));
return FAIL;
}
need_status = STATUS_HEIGHT;
}
#ifdef FEAT_VERTSPLIT
if (flags & WSP_VERT)
{
layout = FR_ROW;
do_equal = (p_ea && new_size == 0 && *p_ead != 'v');
/*
* Check if we are able to split the current window and compute its
* width.
*/
needed = p_wmw + 1;
if (flags & WSP_ROOM)
needed += p_wiw - p_wmw;
if (p_ea || (flags & (WSP_BOT | WSP_TOP)))
{
available = topframe->fr_width;
needed += frame_minwidth(topframe, NULL);
}
else
available = oldwin->w_width;
if (available < needed && newwin == NULL)
{
EMSG(_(e_noroom));
return FAIL;
}
if (new_size == 0)
new_size = oldwin->w_width / 2;
if (new_size > oldwin->w_width - p_wmw - 1)
new_size = oldwin->w_width - p_wmw - 1;
if (new_size < p_wmw)
new_size = p_wmw;
/* if it doesn't fit in the current window, need win_equal() */
if (oldwin->w_width - new_size - 1 < p_wmw)
do_equal = TRUE;
}
else
#endif
{
layout = FR_COL;
do_equal = (p_ea && new_size == 0
#ifdef FEAT_VERTSPLIT
&& *p_ead != 'h'
#endif
);
/*
* Check if we are able to split the current window and compute its
* height.
*/
needed = p_wmh + STATUS_HEIGHT + need_status;
if (flags & WSP_ROOM)
needed += p_wh - p_wmh;
if (p_ea || (flags & (WSP_BOT | WSP_TOP)))
{
available = topframe->fr_height;
needed += frame_minheight(topframe, NULL);
}
else
{
available = oldwin->w_height;
needed += p_wmh;
}
if (available < needed && newwin == NULL)
{
EMSG(_(e_noroom));
return FAIL;
}
oldwin_height = oldwin->w_height;
if (need_status)
{
oldwin->w_status_height = STATUS_HEIGHT;
oldwin_height -= STATUS_HEIGHT;
}
if (new_size == 0)
new_size = oldwin_height / 2;
if (new_size > oldwin_height - p_wmh - STATUS_HEIGHT)
new_size = oldwin_height - p_wmh - STATUS_HEIGHT;
if (new_size < p_wmh)
new_size = p_wmh;
/* if it doesn't fit in the current window, need win_equal() */
if (oldwin_height - new_size - STATUS_HEIGHT < p_wmh)
do_equal = TRUE;
/* We don't like to take lines for the new window from a
* 'winfixheight' window. Take them from a window above or below
* instead, if possible. */
if (oldwin->w_p_wfh)
{
win_setheight_win(oldwin->w_height + new_size + STATUS_HEIGHT,
oldwin);
oldwin_height = oldwin->w_height;
if (need_status)
oldwin_height -= STATUS_HEIGHT;
}
}
/*
* allocate new window structure and link it in the window list
*/
if ((flags & WSP_TOP) == 0
&& ((flags & WSP_BOT)
|| (flags & WSP_BELOW)
|| (!(flags & WSP_ABOVE)
&& (
#ifdef FEAT_VERTSPLIT
(flags & WSP_VERT) ? p_spr :
#endif
p_sb))))
{
/* new window below/right of current one */
if (newwin == NULL)
wp = win_alloc(oldwin);
else
win_append(oldwin, wp);
}
else
{
if (newwin == NULL)
wp = win_alloc(oldwin->w_prev);
else
win_append(oldwin->w_prev, wp);
}
if (newwin == NULL)
{
if (wp == NULL)
return FAIL;
/*
* make the contents of the new window the same as the current one
*/
wp->w_buffer = curbuf;
curbuf->b_nwindows++;
wp->w_cursor = curwin->w_cursor;
wp->w_valid = 0;
wp->w_curswant = curwin->w_curswant;
wp->w_set_curswant = curwin->w_set_curswant;
wp->w_topline = curwin->w_topline;
#ifdef FEAT_DIFF
wp->w_topfill = curwin->w_topfill;
#endif
wp->w_leftcol = curwin->w_leftcol;
wp->w_pcmark = curwin->w_pcmark;
wp->w_prev_pcmark = curwin->w_prev_pcmark;
wp->w_alt_fnum = curwin->w_alt_fnum;
wp->w_fraction = curwin->w_fraction;
wp->w_prev_fraction_row = curwin->w_prev_fraction_row;
#ifdef FEAT_JUMPLIST
copy_jumplist(curwin, wp);
#endif
if (curwin->w_localdir != NULL)
wp->w_localdir = vim_strsave(curwin->w_localdir);
/* Use the same argument list. */
wp->w_alist = curwin->w_alist;
++wp->w_alist->al_refcount;
wp->w_arg_idx = curwin->w_arg_idx;
/*
* copy tagstack and options from existing window
*/
for (i = 0; i < curwin->w_tagstacklen; i++)
{
wp->w_tagstack[i] = curwin->w_tagstack[i];
if (wp->w_tagstack[i].tagname != NULL)
wp->w_tagstack[i].tagname =
vim_strsave(wp->w_tagstack[i].tagname);
}
wp->w_tagstackidx = curwin->w_tagstackidx;
wp->w_tagstacklen = curwin->w_tagstacklen;
win_copy_options(curwin, wp);
#ifdef FEAT_FOLDING
copyFoldingState(curwin, wp);
#endif
}
/*
* Reorganise the tree of frames to insert the new window.
*/
if (flags & (WSP_TOP | WSP_BOT))
{
#ifdef FEAT_VERTSPLIT
if ((topframe->fr_layout == FR_COL && (flags & WSP_VERT) == 0)
|| (topframe->fr_layout == FR_ROW && (flags & WSP_VERT) != 0))
#else
if (topframe->fr_layout == FR_COL)
#endif
{
curfrp = topframe->fr_child;
if (flags & WSP_BOT)
while (curfrp->fr_next != NULL)
curfrp = curfrp->fr_next;
}
else
curfrp = topframe;
before = (flags & WSP_TOP);
}
else
{
curfrp = oldwin->w_frame;
if (flags & WSP_BELOW)
before = FALSE;
else if (flags & WSP_ABOVE)
before = TRUE;
else
#ifdef FEAT_VERTSPLIT
if (flags & WSP_VERT)
before = !p_spr;
else
#endif
before = !p_sb;
}
if (curfrp->fr_parent == NULL || curfrp->fr_parent->fr_layout != layout)
{
/* Need to create a new frame in the tree to make a branch. */
frp = (frame_T *)alloc_clear((unsigned)sizeof(frame_T));
*frp = *curfrp;
curfrp->fr_layout = layout;
frp->fr_parent = curfrp;
frp->fr_next = NULL;
frp->fr_prev = NULL;
curfrp->fr_child = frp;
curfrp->fr_win = NULL;
curfrp = frp;
if (frp->fr_win != NULL)
oldwin->w_frame = frp;
else
for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
frp->fr_parent = curfrp;
}
if (newwin == NULL)
{
/* Create a frame for the new window. */
frp = (frame_T *)alloc_clear((unsigned)sizeof(frame_T));
frp->fr_layout = FR_LEAF;
frp->fr_win = wp;
wp->w_frame = frp;
}
else
frp = newwin->w_frame;
frp->fr_parent = curfrp->fr_parent;
/* Insert the new frame at the right place in the frame list. */
if (before)
frame_insert(curfrp, frp);
else
frame_append(curfrp, frp);
#ifdef FEAT_VERTSPLIT
if (flags & WSP_VERT)
{
wp->w_p_scr = curwin->w_p_scr;
if (need_status)
{
--oldwin->w_height;
oldwin->w_status_height = need_status;
}
if (flags & (WSP_TOP | WSP_BOT))
{
/* set height and row of new window to full height */
wp->w_winrow = 0;
wp->w_height = curfrp->fr_height - (p_ls > 0);
wp->w_status_height = (p_ls > 0);
}
else
{
/* height and row of new window is same as current window */
wp->w_winrow = oldwin->w_winrow;
wp->w_height = oldwin->w_height;
wp->w_status_height = oldwin->w_status_height;
}
frp->fr_height = curfrp->fr_height;
/* "new_size" of the current window goes to the new window, use
* one column for the vertical separator */
wp->w_width = new_size;
if (before)
wp->w_vsep_width = 1;
else
{
wp->w_vsep_width = oldwin->w_vsep_width;
oldwin->w_vsep_width = 1;
}
if (flags & (WSP_TOP | WSP_BOT))
{
if (flags & WSP_BOT)
frame_add_vsep(curfrp);
/* Set width of neighbor frame */
frame_new_width(curfrp, curfrp->fr_width
- (new_size + ((flags & WSP_TOP) != 0)), flags & WSP_TOP);
}
else
oldwin->w_width -= new_size + 1;
if (before) /* new window left of current one */
{
wp->w_wincol = oldwin->w_wincol;
oldwin->w_wincol += new_size + 1;
}
else /* new window right of current one */
wp->w_wincol = oldwin->w_wincol + oldwin->w_width + 1;
frame_fix_width(oldwin);
frame_fix_width(wp);
}
else
#endif
{
/* width and column of new window is same as current window */
#ifdef FEAT_VERTSPLIT
if (flags & (WSP_TOP | WSP_BOT))
{
wp->w_wincol = 0;
wp->w_width = Columns;
wp->w_vsep_width = 0;
}
else
{
wp->w_wincol = oldwin->w_wincol;
wp->w_width = oldwin->w_width;
wp->w_vsep_width = oldwin->w_vsep_width;
}
frp->fr_width = curfrp->fr_width;
#endif
/* "new_size" of the current window goes to the new window, use
* one row for the status line */
win_new_height(wp, new_size);
if (flags & (WSP_TOP | WSP_BOT))
frame_new_height(curfrp, curfrp->fr_height
- (new_size + STATUS_HEIGHT), flags & WSP_TOP, FALSE);
else
win_new_height(oldwin, oldwin_height - (new_size + STATUS_HEIGHT));
if (before) /* new window above current one */
{
wp->w_winrow = oldwin->w_winrow;
wp->w_status_height = STATUS_HEIGHT;
oldwin->w_winrow += wp->w_height + STATUS_HEIGHT;
}
else /* new window below current one */
{
wp->w_winrow = oldwin->w_winrow + oldwin->w_height + STATUS_HEIGHT;
wp->w_status_height = oldwin->w_status_height;
oldwin->w_status_height = STATUS_HEIGHT;
}
#ifdef FEAT_VERTSPLIT
if (flags & WSP_BOT)
frame_add_statusline(curfrp);
#endif
frame_fix_height(wp);
frame_fix_height(oldwin);
}
if (flags & (WSP_TOP | WSP_BOT))
(void)win_comp_pos();
/*
* Both windows need redrawing
*/
redraw_win_later(wp, NOT_VALID);
wp->w_redr_status = TRUE;
redraw_win_later(oldwin, NOT_VALID);
oldwin->w_redr_status = TRUE;
if (need_status)
{
msg_row = Rows - 1;
msg_col = sc_col;
msg_clr_eos_force(); /* Old command/ruler may still be there */
comp_col();
msg_row = Rows - 1;
msg_col = 0; /* put position back at start of line */
}
/*
* make the new window the current window and redraw
*/
if (do_equal || dir != 0)
win_equal(wp, TRUE,
#ifdef FEAT_VERTSPLIT
(flags & WSP_VERT) ? (dir == 'v' ? 'b' : 'h')
: dir == 'h' ? 'b' :
#endif
'v');
/* Don't change the window height/width to 'winheight' / 'winwidth' if a
* size was given. */
#ifdef FEAT_VERTSPLIT
if (flags & WSP_VERT)
{
i = p_wiw;
if (size != 0)
p_wiw = size;
# ifdef FEAT_GUI
/* When 'guioptions' includes 'L' or 'R' may have to add scrollbars. */
if (gui.in_use)
gui_init_which_components(NULL);
# endif
}
else
#endif
{
i = p_wh;
if (size != 0)
p_wh = size;
}
win_enter(wp, FALSE);
#ifdef FEAT_VERTSPLIT
if (flags & WSP_VERT)
p_wiw = i;
else
#endif
p_wh = i;
return OK;
}
#endif /* FEAT_WINDOWS */
#ifdef FEAT_VERTSPLIT
/*
* Return minimal height for window "wp" and windows east of it.
* Takes into account the eastbound windws can be split, each of them
* requireing p_wmh lines. Doesn't count status lines.
*/
static int
win_minheight(wp)
win_T *wp;
{
int minheight = p_wmh;
int n;
win_T *wp1, *wp2;
wp1 = wp;
for (;;)
{
wp1 = wp1->w_next;
if (wp1 == NULL)
break;
n = p_wmh;
wp2 = wp1;
for (;;)
{
wp2 = wp2->w_next;
if (wp2 == NULL)
break;
n += win_minheight(wp2);
}
if (n > minheight)
minheight = n;
}
return minheight;
}
#endif
#if defined(FEAT_WINDOWS) || defined(PROTO)
/*
* Check if "win" is a pointer to an existing window.
*/
int
win_valid(win)
win_T *win;
{
win_T *wp;
if (win == NULL)
return FALSE;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (wp == win)
return TRUE;
return FALSE;
}
/*
* Return the number of windows.
*/
int
win_count()
{
win_T *wp;
int count = 0;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
++count;
return count;
}
/*
* Make "count" windows on the screen.
* Return actual number of windows on the screen.
* Must be called when there is just one window, filling the whole screen
* (excluding the command line).
*/
/*ARGSUSED*/
int
make_windows(count, vertical)
int count;
int vertical; /* split windows vertically if TRUE */
{
int maxcount;
int todo;
#ifdef FEAT_VERTSPLIT
if (vertical)
{
/* Each windows needs at least 'winminwidth' lines and a separator
* column. */
maxcount = (curwin->w_width + curwin->w_vsep_width
- (p_wiw - p_wmw)) / (p_wmw + 1);
}
else
#endif
{
/* Each window needs at least 'winminheight' lines and a status line. */
maxcount = (curwin->w_height + curwin->w_status_height
- (p_wh - p_wmh)) / (p_wmh + STATUS_HEIGHT);
}
if (maxcount < 2)
maxcount = 2;
if (count > maxcount)
count = maxcount;
/*
* add status line now, otherwise first window will be too big
*/
if (count > 1)
last_status(TRUE);
#ifdef FEAT_AUTOCMD
/*
* Don't execute autocommands while creating the windows. Must do that
* when putting the buffers in the windows.
*/
++autocmd_block;
#endif
/* todo is number of windows left to create */
for (todo = count - 1; todo > 0; --todo)
#ifdef FEAT_VERTSPLIT
if (vertical)
{
if (win_split(curwin->w_width - (curwin->w_width - todo)
/ (todo + 1) - 1, WSP_VERT | WSP_ABOVE) == FAIL)
break;
}
else
#endif
{
if (win_split(curwin->w_height - (curwin->w_height - todo
* STATUS_HEIGHT) / (todo + 1)
- STATUS_HEIGHT, WSP_ABOVE) == FAIL)
break;
}
#ifdef FEAT_AUTOCMD
--autocmd_block;
#endif
/* return actual number of windows */
return (count - todo);
}
/*
* Exchange current and next window
*/
static void
win_exchange(Prenum)
long Prenum;
{
frame_T *frp;
frame_T *frp2;
win_T *wp;
win_T *wp2;
int temp;
if (lastwin == firstwin) /* just one window */
{
beep_flush();
return;
}
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
/*
* find window to exchange with
*/
if (Prenum)
{
frp = curwin->w_frame->fr_parent->fr_child;
while (frp != NULL && --Prenum > 0)
frp = frp->fr_next;
}
else if (curwin->w_frame->fr_next != NULL) /* Swap with next */
frp = curwin->w_frame->fr_next;
else /* Swap last window in row/col with previous */
frp = curwin->w_frame->fr_prev;
/* We can only exchange a window with another window, not with a frame
* containing windows. */
if (frp == NULL || frp->fr_win == NULL || frp->fr_win == curwin)
return;
wp = frp->fr_win;
/*
* 1. remove curwin from the list. Remember after which window it was in wp2
* 2. insert curwin before wp in the list
* if wp != wp2
* 3. remove wp from the list
* 4. insert wp after wp2
* 5. exchange the status line height and vsep width.
*/
wp2 = curwin->w_prev;
frp2 = curwin->w_frame->fr_prev;
if (wp->w_prev != curwin)
{
win_remove(curwin);
frame_remove(curwin->w_frame);
win_append(wp->w_prev, curwin);
frame_insert(frp, curwin->w_frame);
}
if (wp != wp2)
{
win_remove(wp);
frame_remove(wp->w_frame);
win_append(wp2, wp);
if (frp2 == NULL)
frame_insert(wp->w_frame->fr_parent->fr_child, wp->w_frame);
else
frame_append(frp2, wp->w_frame);
}
temp = curwin->w_status_height;
curwin->w_status_height = wp->w_status_height;
wp->w_status_height = temp;
#ifdef FEAT_VERTSPLIT
temp = curwin->w_vsep_width;
curwin->w_vsep_width = wp->w_vsep_width;
wp->w_vsep_width = temp;
/* If the windows are not in the same frame, exchange the sizes to avoid
* messing up the window layout. Otherwise fix the frame sizes. */
if (curwin->w_frame->fr_parent != wp->w_frame->fr_parent)
{
temp = curwin->w_height;
curwin->w_height = wp->w_height;
wp->w_height = temp;
temp = curwin->w_width;
curwin->w_width = wp->w_width;
wp->w_width = temp;
}
else
{
frame_fix_height(curwin);
frame_fix_height(wp);
frame_fix_width(curwin);
frame_fix_width(wp);
}
#endif
(void)win_comp_pos(); /* recompute window positions */
win_enter(wp, TRUE);
redraw_later(CLEAR);
}
/*
* rotate windows: if upwards TRUE the second window becomes the first one
* if upwards FALSE the first window becomes the second one
*/
static void
win_rotate(upwards, count)
int upwards;
int count;
{
win_T *wp1;
win_T *wp2;
frame_T *frp;
int n;
if (firstwin == lastwin) /* nothing to do */
{
beep_flush();
return;
}
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
#ifdef FEAT_VERTSPLIT
/* Check if all frames in this row/col have one window. */
for (frp = curwin->w_frame->fr_parent->fr_child; frp != NULL;
frp = frp->fr_next)
if (frp->fr_win == NULL)
{
EMSG(_("E443: Cannot rotate when another window is split"));
return;
}
#endif
while (count--)
{
if (upwards) /* first window becomes last window */
{
/* remove first window/frame from the list */
frp = curwin->w_frame->fr_parent->fr_child;
wp1 = frp->fr_win;
win_remove(wp1);
frame_remove(frp);
/* find last frame and append removed window/frame after it */
for ( ; frp->fr_next != NULL; frp = frp->fr_next)
;
win_append(frp->fr_win, wp1);
frame_append(frp, wp1->w_frame);
wp2 = frp->fr_win; /* previously last window */
}
else /* last window becomes first window */
{
/* find last window/frame in the list and remove it */
for (frp = curwin->w_frame; frp->fr_next != NULL;
frp = frp->fr_next)
;
wp1 = frp->fr_win;
wp2 = wp1->w_prev; /* will become last window */
win_remove(wp1);
frame_remove(frp);
/* append the removed window/frame before the first in the list */
win_append(frp->fr_parent->fr_child->fr_win->w_prev, wp1);
frame_insert(frp->fr_parent->fr_child, frp);
}
/* exchange status height and vsep width of old and new last window */
n = wp2->w_status_height;
wp2->w_status_height = wp1->w_status_height;
wp1->w_status_height = n;
frame_fix_height(wp1);
frame_fix_height(wp2);
#ifdef FEAT_VERTSPLIT
n = wp2->w_vsep_width;
wp2->w_vsep_width = wp1->w_vsep_width;
wp1->w_vsep_width = n;
frame_fix_width(wp1);
frame_fix_width(wp2);
#endif
/* recompute w_winrow and w_wincol for all windows */
(void)win_comp_pos();
}
redraw_later(CLEAR);
}
/*
* Move the current window to the very top/bottom/left/right of the screen.
*/
static void
win_totop(size, flags)
int size;
int flags;
{
int dir;
int height = curwin->w_height;
if (lastwin == firstwin)
{
beep_flush();
return;
}
/* Remove the window and frame from the tree of frames. */
(void)winframe_remove(curwin, &dir);
win_remove(curwin);
last_status(FALSE); /* may need to remove last status line */
(void)win_comp_pos(); /* recompute window positions */
/* Split a window on the desired side and put the window there. */
(void)win_split_ins(size, flags, curwin, dir);
if (!(flags & WSP_VERT))
{
win_setheight(height);
if (p_ea)
win_equal(curwin, TRUE, 'v');
}
#if defined(FEAT_GUI) && defined(FEAT_VERTSPLIT)
/* When 'guioptions' includes 'L' or 'R' may have to remove or add
* scrollbars. Have to update them anyway. */
if (gui.in_use)
{
out_flush();
gui_init_which_components(NULL);
gui_update_scrollbars(TRUE);
}
need_mouse_correct = TRUE;
#endif
}
/*
* Move window "win1" to below/right of "win2" and make "win1" the current
* window. Only works within the same frame!
*/
void
win_move_after(win1, win2)
win_T *win1, *win2;
{
int height;
/* check if the arguments are reasonable */
if (win1 == win2)
return;
/* check if there is something to do */
if (win2->w_next != win1)
{
/* may need move the status line/vertical separator of the last window
* */
if (win1 == lastwin)
{
height = win1->w_prev->w_status_height;
win1->w_prev->w_status_height = win1->w_status_height;
win1->w_status_height = height;
#ifdef FEAT_VERTSPLIT
win1->w_prev->w_vsep_width = 0;
win1->w_vsep_width = 1;
#endif
}
else if (win2 == lastwin)
{
height = win1->w_status_height;
win1->w_status_height = win2->w_status_height;
win2->w_status_height = height;
#ifdef FEAT_VERTSPLIT
win2->w_vsep_width = 1;
win1->w_vsep_width = 0;
#endif
}
win_remove(win1);
frame_remove(win1->w_frame);
win_append(win2, win1);
frame_append(win2->w_frame, win1->w_frame);
(void)win_comp_pos(); /* recompute w_winrow for all windows */
redraw_later(NOT_VALID);
}
win_enter(win1, FALSE);
}
/*
* Make all windows the same height.
* 'next_curwin' will soon be the current window, make sure it has enough
* rows.
*/
void
win_equal(next_curwin, current, dir)
win_T *next_curwin; /* pointer to current window to be or NULL */
int current; /* do only frame with current window */
int dir; /* 'v' for vertically, 'h' for horizontally,
'b' for both, 0 for using p_ead */
{
if (dir == 0)
#ifdef FEAT_VERTSPLIT
dir = *p_ead;
#else
dir = 'b';
#endif
win_equal_rec(next_curwin == NULL ? curwin : next_curwin, current,
topframe, dir, 0, 0, (int)Columns, topframe->fr_height);
}
/*
* Set a frame to a new position and height, spreading the available room
* equally over contained frames.
* The window "next_curwin" (if not NULL) should at least get the size from
* 'winheight' and 'winwidth' if possible.
*/
static void
win_equal_rec(next_curwin, current, topfr, dir, col, row, width, height)
win_T *next_curwin; /* pointer to current window to be or NULL */
int current; /* do only frame with current window */
frame_T *topfr; /* frame to set size off */
int dir; /* 'v', 'h' or 'b', see win_equal() */
int col; /* horizontal position for frame */
int row; /* vertical position for frame */
int width; /* new width of frame */
int height; /* new height of frame */
{
int n, m;
int extra_sep = 0;
int wincount, totwincount = 0;
frame_T *fr;
int next_curwin_size = 0;
int room = 0;
int new_size;
int has_next_curwin = 0;
int hnc;
if (topfr->fr_layout == FR_LEAF)
{
/* Set the width/height of this frame.
* Redraw when size or position changes */
if (topfr->fr_height != height || topfr->fr_win->w_winrow != row
#ifdef FEAT_VERTSPLIT
|| topfr->fr_width != width || topfr->fr_win->w_wincol != col
#endif
)
{
topfr->fr_win->w_winrow = row;
frame_new_height(topfr, height, FALSE, FALSE);
#ifdef FEAT_VERTSPLIT
topfr->fr_win->w_wincol = col;
frame_new_width(topfr, width, FALSE);
#endif
redraw_all_later(CLEAR);
}
}
#ifdef FEAT_VERTSPLIT
else if (topfr->fr_layout == FR_ROW)
{
topfr->fr_width = width;
topfr->fr_height = height;
if (dir != 'v') /* equalize frame widths */
{
/* Compute the maximum number of windows horizontally in this
* frame. */
n = frame_minwidth(topfr, NOWIN);
/* add one for the rightmost window, it doesn't have a separator */
if (col + width == Columns)
extra_sep = 1;
else
extra_sep = 0;
totwincount = (n + extra_sep) / (p_wmw + 1);
/* Compute room available for windows other than "next_curwin" */
m = frame_minwidth(topfr, next_curwin);
room = width - m;
if (room < 0)
{
next_curwin_size = p_wiw + room;
room = 0;
}
else if (n == m) /* doesn't contain curwin */
next_curwin_size = 0;
else
{
next_curwin_size = (room + p_wiw + (totwincount - 1) * p_wmw
+ (totwincount - 1)) / totwincount;
if (next_curwin_size > p_wiw)
room -= next_curwin_size - p_wiw;
else
next_curwin_size = p_wiw;
}
if (n != m)
--totwincount; /* don't count curwin */
}
for (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next)
{
n = m = 0;
wincount = 1;
if (fr->fr_next == NULL)
/* last frame gets all that remains (avoid roundoff error) */
new_size = width;
else if (dir == 'v')
new_size = fr->fr_width;
else
{
/* Compute the maximum number of windows horiz. in "fr". */
n = frame_minwidth(fr, NOWIN);
wincount = (n + (fr->fr_next == NULL ? extra_sep : 0))
/ (p_wmw + 1);
m = frame_minwidth(fr, next_curwin);
if (n != m) /* don't count next_curwin */
--wincount;
new_size = (wincount * room + ((unsigned)totwincount >> 1))
/ totwincount;
if (n != m) /* add next_curwin size */
{
next_curwin_size -= p_wiw - (m - n);
new_size += next_curwin_size;
}
}
/* Skip frame that is full height when splitting or closing a
* window, unless equalizing all frames. */
if (!current || dir != 'v' || topfr->fr_parent != NULL
|| (new_size != fr->fr_width)
|| frame_has_win(fr, next_curwin))
win_equal_rec(next_curwin, current, fr, dir, col, row,
new_size + n, height);
col += new_size + n;
width -= new_size + n;
if (n != m) /* contains curwin */
room -= new_size - next_curwin_size;
else
room -= new_size;
totwincount -= wincount;
}
}
#endif
else /* topfr->fr_layout == FR_COL */
{
#ifdef FEAT_VERTSPLIT
topfr->fr_width = width;
#endif
topfr->fr_height = height;
if (dir != 'h') /* equalize frame heights */
{
/* Compute maximum number of windows vertically in this frame. */
n = frame_minheight(topfr, NOWIN);
/* add one for the bottom window if it doesn't have a statusline */
if (row + height == cmdline_row && p_ls == 0)
extra_sep = 1;
else
extra_sep = 0;
totwincount = (n + extra_sep) / (p_wmh + 1);
has_next_curwin = frame_has_win(topfr, next_curwin);
/*
* Compute height for "next_curwin" window and room available for
* other windows.
* "m" is the minimal height when counting p_wh for "next_curwin".
*/
m = frame_minheight(topfr, next_curwin);
room = height - m;
if (room < 0)
{
/* The room is less then 'winheight', use all space for the
* current window. */
next_curwin_size = p_wh + room;
room = 0;
}
else
{
next_curwin_size = -1;
for (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next)
{
/* If 'winfixheight' set keep the window height if
* possible.
* Watch out for this window being the next_curwin. */
if (frame_fixed_height(fr))
{
n = frame_minheight(fr, NOWIN);
new_size = fr->fr_height;
if (frame_has_win(fr, next_curwin))
{
room += p_wh - p_wmh;
next_curwin_size = 0;
if (new_size < p_wh)
new_size = p_wh;
}
else
/* These windows don't use up room. */
totwincount -= (n + (fr->fr_next == NULL
? extra_sep : 0)) / (p_wmh + 1);
room -= new_size - n;
if (room < 0)
{
new_size += room;
room = 0;
}
fr->fr_newheight = new_size;
}
}
if (next_curwin_size == -1)
{
if (!has_next_curwin)
next_curwin_size = 0;
else if (totwincount > 1
&& (room + (totwincount - 2))
/ (totwincount - 1) > p_wh)
{
next_curwin_size = (room + p_wh + totwincount * p_wmh
+ (totwincount - 1)) / totwincount;
room -= next_curwin_size - p_wh;
}
else
next_curwin_size = p_wh;
}
}
if (has_next_curwin)
--totwincount; /* don't count curwin */
}
for (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next)
{
n = m = 0;
wincount = 1;
if (fr->fr_next == NULL)
/* last frame gets all that remains (avoid roundoff error) */
new_size = height;
else if (dir == 'h')
new_size = fr->fr_height;
else if (frame_fixed_height(fr))
{
new_size = fr->fr_newheight;
wincount = 0; /* doesn't count as a sizeable window */
}
else
{
/* Compute the maximum number of windows vert. in "fr". */
n = frame_minheight(fr, NOWIN);
wincount = (n + (fr->fr_next == NULL ? extra_sep : 0))
/ (p_wmh + 1);
m = frame_minheight(fr, next_curwin);
if (has_next_curwin)
hnc = frame_has_win(fr, next_curwin);
else
hnc = FALSE;
if (hnc) /* don't count next_curwin */
--wincount;
if (totwincount == 0)
new_size = room;
else
new_size = (wincount * room + ((unsigned)totwincount >> 1))
/ totwincount;
if (hnc) /* add next_curwin size */
{
next_curwin_size -= p_wh - (m - n);
new_size += next_curwin_size;
room -= new_size - next_curwin_size;
}
else
room -= new_size;
new_size += n;
}
/* Skip frame that is full width when splitting or closing a
* window, unless equalizing all frames. */
if (!current || dir != 'h' || topfr->fr_parent != NULL
|| (new_size != fr->fr_height)
|| frame_has_win(fr, next_curwin))
win_equal_rec(next_curwin, current, fr, dir, col, row,
width, new_size);
row += new_size;
height -= new_size;
totwincount -= wincount;
}
}
}
/*
* close all windows for buffer 'buf'
*/
void
close_windows(buf)
buf_T *buf;
{
win_T *win;
++RedrawingDisabled;
for (win = firstwin; win != NULL && lastwin != firstwin; )
{
if (win->w_buffer == buf)
{
win_close(win, FALSE);
win = firstwin; /* go back to the start */
}
else
win = win->w_next;
}
--RedrawingDisabled;
}
/*
* close window "win"
* If "free_buf" is TRUE related buffer may be unloaded.
*
* called by :quit, :close, :xit, :wq and findtag()
*/
void
win_close(win, free_buf)
win_T *win;
int free_buf;
{
win_T *wp;
#ifdef FEAT_AUTOCMD
int other_buffer = FALSE;
#endif
int close_curwin = FALSE;
frame_T *frp;
int dir;
int help_window = FALSE;
if (lastwin == firstwin)
{
EMSG(_("E444: Cannot close last window"));
return;
}
/* When closing the help window, try restoring a snapshot after closing
* the window. Otherwise clear the snapshot, it's now invalid. */
if (win->w_buffer->b_help)
help_window = TRUE;
else
clear_snapshot();
#ifdef FEAT_AUTOCMD
if (win == curwin)
{
/*
* Guess which window is going to be the new current window.
* This may change because of the autocommands (sigh).
*/
wp = frame2win(win_altframe(win));
/*
* Be careful: If autocommands delete the window, return now.
*/
if (wp->w_buffer != curbuf)
{
other_buffer = TRUE;
apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
if (!win_valid(win) || firstwin == lastwin)
return;
}
apply_autocmds(EVENT_WINLEAVE, NULL, NULL, FALSE, curbuf);
if (!win_valid(win) || firstwin == lastwin)
return;
# ifdef FEAT_EVAL
/* autocmds may abort script processing */
if (aborting())
return;
# endif
}
#endif
/*
* Close the link to the buffer.
*/
close_buffer(win, win->w_buffer, free_buf ? DOBUF_UNLOAD : 0);
/* Autocommands may have closed the window already, or closed the only
* other window. */
if (!win_valid(win) || firstwin == lastwin)
return;
/* reduce the reference count to the argument list. */
alist_unlink(win->w_alist);
/* remove the window and its frame from the tree of frames. */
frp = win->w_frame;
wp = winframe_remove(win, &dir);
vim_free(frp);
win_free(win);
/* Make sure curwin isn't invalid. It can cause severe trouble when
* printing an error message. For win_equal() curbuf needs to be valid
* too. */
if (win == curwin)
{
curwin = wp;
#ifdef FEAT_QUICKFIX
if (wp->w_p_pvw || bt_quickfix(wp->w_buffer))
{
/*
* The cursor goes to the preview or the quickfix window, try
* finding another window to go to.
*/
for (;;)
{
if (wp->w_next == NULL)
wp = firstwin;
else
wp = wp->w_next;
if (wp == curwin)
break;
if (!wp->w_p_pvw && !bt_quickfix(wp->w_buffer))
{
curwin = wp;
break;
}
}
}
#endif
curbuf = curwin->w_buffer;
close_curwin = TRUE;
}
if (p_ea)
win_equal(curwin, TRUE,
#ifdef FEAT_VERTSPLIT
dir
#else
0
#endif
);
else
win_comp_pos();
if (close_curwin)
{
win_enter_ext(wp, FALSE, TRUE);
#ifdef FEAT_AUTOCMD
if (other_buffer)
/* careful: after this wp and win may be invalid! */
apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
#endif
}
/*
* if last window has a status line now and we don't want one,
* remove the status line
*/
last_status(FALSE);
/* After closing the help window, try restoring the window layout from
* before it was opened. */
if (help_window)
restore_snapshot(close_curwin);
#if defined(FEAT_GUI) && defined(FEAT_VERTSPLIT)
/* When 'guioptions' includes 'L' or 'R' may have to remove scrollbars. */
if (gui.in_use && !win_hasvertsplit())
gui_init_which_components(NULL);
#endif
redraw_all_later(NOT_VALID);
}
/*
* Remove a window and its frame from the tree of frames.
* Returns a pointer to the window that got the freed up space.
*/
/*ARGSUSED*/
static win_T *
winframe_remove(win, dirp)
win_T *win;
int *dirp; /* set to 'v' or 'h' for direction if 'ea' */
{
frame_T *frp, *frp2, *frp3;
frame_T *frp_close = win->w_frame;
win_T *wp;
int old_height = 0;
/*
* Remove the window from its frame.
*/
frp2 = win_altframe(win);
wp = frame2win(frp2);
/* Remove this frame from the list of frames. */
frame_remove(frp_close);
#ifdef FEAT_VERTSPLIT
if (frp_close->fr_parent->fr_layout == FR_COL)
{
#endif
/* When 'winfixheight' is set, remember its old size and restore
* it later (it's a simplistic solution...). Don't do this if the
* window will occupy the full height of the screen. */
if (frp2->fr_win != NULL
&& (frp2->fr_next != NULL || frp2->fr_prev != NULL)
&& frp2->fr_win->w_p_wfh)
old_height = frp2->fr_win->w_height;
frame_new_height(frp2, frp2->fr_height + frp_close->fr_height,
frp2 == frp_close->fr_next ? TRUE : FALSE, FALSE);
if (old_height != 0)
win_setheight_win(old_height, frp2->fr_win);
#ifdef FEAT_VERTSPLIT
*dirp = 'v';
}
else
{
frame_new_width(frp2, frp2->fr_width + frp_close->fr_width,
frp2 == frp_close->fr_next ? TRUE : FALSE);
*dirp = 'h';
}
#endif
/* If rows/columns go to a window below/right its positions need to be
* updated. Can only be done after the sizes have been updated. */
if (frp2 == frp_close->fr_next)
{
int row = win->w_winrow;
int col = W_WINCOL(win);
frame_comp_pos(frp2, &row, &col);
}
if (frp2->fr_next == NULL && frp2->fr_prev == NULL)
{
/* There is no other frame in this list, move its info to the parent
* and remove it. */
frp2->fr_parent->fr_layout = frp2->fr_layout;
frp2->fr_parent->fr_child = frp2->fr_child;
for (frp = frp2->fr_child; frp != NULL; frp = frp->fr_next)
frp->fr_parent = frp2->fr_parent;
frp2->fr_parent->fr_win = frp2->fr_win;
if (frp2->fr_win != NULL)
frp2->fr_win->w_frame = frp2->fr_parent;
frp = frp2->fr_parent;
vim_free(frp2);
frp2 = frp->fr_parent;
if (frp2 != NULL && frp2->fr_layout == frp->fr_layout)
{
/* The frame above the parent has the same layout, have to merge
* the frames into this list. */
if (frp2->fr_child == frp)
frp2->fr_child = frp->fr_child;
frp->fr_child->fr_prev = frp->fr_prev;
if (frp->fr_prev != NULL)
frp->fr_prev->fr_next = frp->fr_child;
for (frp3 = frp->fr_child; ; frp3 = frp3->fr_next)
{
frp3->fr_parent = frp2;
if (frp3->fr_next == NULL)
{
frp3->fr_next = frp->fr_next;
if (frp->fr_next != NULL)
frp->fr_next->fr_prev = frp3;
break;
}
}
vim_free(frp);
}
}
return wp;
}
/*
* Find out which frame is going to get the freed up space when "win" is
* closed.
* if 'splitbelow'/'splitleft' the space goes to the window above/left.
* if 'nosplitbelow'/'nosplitleft' the space goes to the window below/right.
* This makes opening a window and closing it immediately keep the same window
* layout.
*/
static frame_T *
win_altframe(win)
win_T *win;
{
frame_T *frp;
int b;
frp = win->w_frame;
#ifdef FEAT_VERTSPLIT
if (frp->fr_parent->fr_layout == FR_ROW)
b = p_spr;
else
#endif
b = p_sb;
if ((!b && frp->fr_next != NULL) || frp->fr_prev == NULL)
return frp->fr_next;
return frp->fr_prev;
}
/*
* Find the left-upper window in frame "frp".
*/
static win_T *
frame2win(frp)
frame_T *frp;
{
while (frp->fr_win == NULL)
frp = frp->fr_child;
return frp->fr_win;
}
/*
* Return TRUE if frame "frp" contains window "wp".
*/
static int
frame_has_win(frp, wp)
frame_T *frp;
win_T *wp;
{
frame_T *p;
if (frp->fr_layout == FR_LEAF)
return frp->fr_win == wp;
for (p = frp->fr_child; p != NULL; p = p->fr_next)
if (frame_has_win(p, wp))
return TRUE;
return FALSE;
}
/*
* Set a new height for a frame. Recursively sets the height for contained
* frames and windows. Caller must take care of positions.
*/
static void
frame_new_height(topfrp, height, topfirst, wfh)
frame_T *topfrp;
int height;
int topfirst; /* resize topmost contained frame first */
int wfh; /* obey 'winfixheight' when there is a choice;
may cause the height not to be set */
{
frame_T *frp;
int extra_lines;
int h;
if (topfrp->fr_win != NULL)
{
/* Simple case: just one window. */
win_new_height(topfrp->fr_win,
height - topfrp->fr_win->w_status_height);
}
#ifdef FEAT_VERTSPLIT
else if (topfrp->fr_layout == FR_ROW)
{
do
{
/* All frames in this row get the same new height. */
for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
{
frame_new_height(frp, height, topfirst, wfh);
if (frp->fr_height > height)
{
/* Could not fit the windows, make the whole row higher. */
height = frp->fr_height;
break;
}
}
}
while (frp != NULL);
}
#endif
else
{
/* Complicated case: Resize a column of frames. Resize the bottom
* frame first, frames above that when needed. */
frp = topfrp->fr_child;
if (wfh)
/* Advance past frames with one window with 'wfh' set. */
while (frame_fixed_height(frp))
{
frp = frp->fr_next;
if (frp == NULL)
return; /* no frame without 'wfh', give up */
}
if (!topfirst)
{
/* Find the bottom frame of this column */
while (frp->fr_next != NULL)
frp = frp->fr_next;
if (wfh)
/* Advance back for frames with one window with 'wfh' set. */
while (frame_fixed_height(frp))
frp = frp->fr_prev;
}
extra_lines = height - topfrp->fr_height;
if (extra_lines < 0)
{
/* reduce height of contained frames, bottom or top frame first */
while (frp != NULL)
{
h = frame_minheight(frp, NULL);
if (frp->fr_height + extra_lines < h)
{
extra_lines += frp->fr_height - h;
frame_new_height(frp, h, topfirst, wfh);
}
else
{
frame_new_height(frp, frp->fr_height + extra_lines,
topfirst, wfh);
break;
}
if (topfirst)
{
do
frp = frp->fr_next;
while (wfh && frp != NULL && frame_fixed_height(frp));
}
else
{
do
frp = frp->fr_prev;
while (wfh && frp != NULL && frame_fixed_height(frp));
}
/* Increase "height" if we could not reduce enough frames. */
if (frp == NULL)
height -= extra_lines;
}
}
else if (extra_lines > 0)
{
/* increase height of bottom or top frame */
frame_new_height(frp, frp->fr_height + extra_lines, topfirst, wfh);
}
}
topfrp->fr_height = height;
}
/*
* Return TRUE if height of frame "frp" should not be changed because of
* the 'winfixheight' option.
*/
static int
frame_fixed_height(frp)
frame_T *frp;
{
/* frame with one window: fixed height if 'winfixheight' set. */
if (frp->fr_win != NULL)
return frp->fr_win->w_p_wfh;
if (frp->fr_layout == FR_ROW)
{
/* The frame is fixed height if one of the frames in the row is fixed
* height. */
for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
if (frame_fixed_height(frp))
return TRUE;
return FALSE;
}
/* frp->fr_layout == FR_COL: The frame is fixed height if all of the
* frames in the row are fixed height. */
for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
if (!frame_fixed_height(frp))
return FALSE;
return TRUE;
}
#ifdef FEAT_VERTSPLIT
/*
* Add a status line to windows at the bottom of "frp".
* Note: Does not check if there is room!
*/
static void
frame_add_statusline(frp)
frame_T *frp;
{
win_T *wp;
if (frp->fr_layout == FR_LEAF)
{
wp = frp->fr_win;
if (wp->w_status_height == 0)
{
if (wp->w_height > 0) /* don't make it negative */
--wp->w_height;
wp->w_status_height = STATUS_HEIGHT;
}
}
else if (frp->fr_layout == FR_ROW)
{
/* Handle all the frames in the row. */
for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
frame_add_statusline(frp);
}
else /* frp->fr_layout == FR_COL */
{
/* Only need to handle the last frame in the column. */
for (frp = frp->fr_child; frp->fr_next != NULL; frp = frp->fr_next)
;
frame_add_statusline(frp);
}
}
/*
* Set width of a frame. Handles recursively going through contained frames.
* May remove separator line for windows at the right side (for win_close()).
*/
static void
frame_new_width(topfrp, width, leftfirst)
frame_T *topfrp;
int width;
int leftfirst; /* resize leftmost contained frame first */
{
frame_T *frp;
int extra_cols;
int w;
win_T *wp;
if (topfrp->fr_layout == FR_LEAF)
{
/* Simple case: just one window. */
wp = topfrp->fr_win;
/* Find out if there are any windows right of this one. */
for (frp = topfrp; frp->fr_parent != NULL; frp = frp->fr_parent)
if (frp->fr_parent->fr_layout == FR_ROW && frp->fr_next != NULL)
break;
if (frp->fr_parent == NULL)
wp->w_vsep_width = 0;
win_new_width(wp, width - wp->w_vsep_width);
}
else if (topfrp->fr_layout == FR_COL)
{
/* All frames in this column get the same new width. */
for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
frame_new_width(frp, width, leftfirst);
}
else /* fr_layout == FR_ROW */
{
/* Complicated case: Resize a row of frames. Resize the rightmost
* frame first, frames left of it when needed. */
/* Find the rightmost frame of this row */
frp = topfrp->fr_child;
if (!leftfirst)
while (frp->fr_next != NULL)
frp = frp->fr_next;
extra_cols = width - topfrp->fr_width;
if (extra_cols < 0)
{
/* reduce frame width, rightmost frame first */
while (frp != NULL)
{
w = frame_minwidth(frp, NULL);
if (frp->fr_width + extra_cols < w)
{
extra_cols += frp->fr_width - w;
frame_new_width(frp, w, leftfirst);
}
else
{
frame_new_width(frp, frp->fr_width + extra_cols, leftfirst);
break;
}
if (leftfirst)
frp = frp->fr_next;
else
frp = frp->fr_prev;
}
}
else if (extra_cols > 0)
{
/* increase width of rightmost frame */
frame_new_width(frp, frp->fr_width + extra_cols, leftfirst);
}
}
topfrp->fr_width = width;
}
/*
* Add the vertical separator to windows at the right side of "frp".
* Note: Does not check if there is room!
*/
static void
frame_add_vsep(frp)
frame_T *frp;
{
win_T *wp;
if (frp->fr_layout == FR_LEAF)
{
wp = frp->fr_win;
if (wp->w_vsep_width == 0)
{
if (wp->w_width > 0) /* don't make it negative */
--wp->w_width;
wp->w_vsep_width = 1;
}
}
else if (frp->fr_layout == FR_COL)
{
/* Handle all the frames in the column. */
for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
frame_add_vsep(frp);
}
else /* frp->fr_layout == FR_ROW */
{
/* Only need to handle the last frame in the row. */
frp = frp->fr_child;
while (frp->fr_next != NULL)
frp = frp->fr_next;
frame_add_vsep(frp);
}
}
/*
* Set frame width from the window it contains.
*/
static void
frame_fix_width(wp)
win_T *wp;
{
wp->w_frame->fr_width = wp->w_width + wp->w_vsep_width;
}
#endif
/*
* Set frame height from the window it contains.
*/
static void
frame_fix_height(wp)
win_T *wp;
{
wp->w_frame->fr_height = wp->w_height + wp->w_status_height;
}
/*
* Compute the minimal height for frame "topfrp".
* Uses the 'winminheight' option.
* When "next_curwin" isn't NULL, use p_wh for this window.
* When "next_curwin" is NOWIN, don't use at least one line for the current
* window.
*/
static int
frame_minheight(topfrp, next_curwin)
frame_T *topfrp;
win_T *next_curwin;
{
frame_T *frp;
int m;
#ifdef FEAT_VERTSPLIT
int n;
#endif
if (topfrp->fr_win != NULL)
{
if (topfrp->fr_win == next_curwin)
m = p_wh + topfrp->fr_win->w_status_height;
else
{
/* window: minimal height of the window plus status line */
m = p_wmh + topfrp->fr_win->w_status_height;
/* Current window is minimal one line high */
if (p_wmh == 0 && topfrp->fr_win == curwin && next_curwin == NULL)
++m;
}
}
#ifdef FEAT_VERTSPLIT
else if (topfrp->fr_layout == FR_ROW)
{
/* get the minimal height from each frame in this row */
m = 0;
for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
{
n = frame_minheight(frp, next_curwin);
if (n > m)
m = n;
}
}
#endif
else
{
/* Add up the minimal heights for all frames in this column. */
m = 0;
for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
m += frame_minheight(frp, next_curwin);
}
return m;
}
#ifdef FEAT_VERTSPLIT
/*
* Compute the minimal width for frame "topfrp".
* When "next_curwin" isn't NULL, use p_wiw for this window.
* When "next_curwin" is NOWIN, don't use at least one column for the current
* window.
*/
static int
frame_minwidth(topfrp, next_curwin)
frame_T *topfrp;
win_T *next_curwin; /* use p_wh and p_wiw for next_curwin */
{
frame_T *frp;
int m, n;
if (topfrp->fr_win != NULL)
{
if (topfrp->fr_win == next_curwin)
m = p_wiw + topfrp->fr_win->w_vsep_width;
else
{
/* window: minimal width of the window plus separator column */
m = p_wmw + topfrp->fr_win->w_vsep_width;
/* Current window is minimal one column wide */
if (p_wmw == 0 && topfrp->fr_win == curwin && next_curwin == NULL)
++m;
}
}
else if (topfrp->fr_layout == FR_COL)
{
/* get the minimal width from each frame in this column */
m = 0;
for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
{
n = frame_minwidth(frp, next_curwin);
if (n > m)
m = n;
}
}
else
{
/* Add up the minimal widths for all frames in this row. */
m = 0;
for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
m += frame_minwidth(frp, next_curwin);
}
return m;
}
#endif
/*
* Try to close all windows except current one.
* Buffers in the other windows become hidden if 'hidden' is set, or '!' is
* used and the buffer was modified.
*
* Used by ":bdel" and ":only".
*/
void
close_others(message, forceit)
int message;
int forceit; /* always hide all other windows */
{
win_T *wp;
win_T *nextwp;
int r;
if (lastwin == firstwin)
{
if (message
#ifdef FEAT_AUTOCMD
&& !autocmd_busy
#endif
)
MSG(_("Already only one window"));
return;
}
/* Be very careful here: autocommands may change the window layout. */
for (wp = firstwin; win_valid(wp); wp = nextwp)
{
nextwp = wp->w_next;
if (wp != curwin) /* don't close current window */
{
/* Check if it's allowed to abandon this window */
r = can_abandon(wp->w_buffer, forceit);
#ifdef FEAT_AUTOCMD
if (!win_valid(wp)) /* autocommands messed wp up */
{
nextwp = firstwin;
continue;
}
#endif
if (!r)
{
#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
if (message && (p_confirm || cmdmod.confirm) && p_write)
{
dialog_changed(wp->w_buffer, FALSE);
# ifdef FEAT_AUTOCMD
if (!win_valid(wp)) /* autocommands messed wp up */
{
nextwp = firstwin;
continue;
}
# endif
}
if (bufIsChanged(wp->w_buffer))
#endif
continue;
}
win_close(wp, !P_HID(wp->w_buffer) && !bufIsChanged(wp->w_buffer));
}
}
/*
* If current window has a status line and we don't want one,
* remove the status line.
*/
if (lastwin != firstwin)
EMSG(_("E445: Other window contains changes"));
}
#endif /* FEAT_WINDOWS */
/*
* init the cursor in the window
*
* called when a new file is being edited
*/
void
win_init(wp)
win_T *wp;
{
redraw_win_later(wp, NOT_VALID);
wp->w_lines_valid = 0;
wp->w_cursor.lnum = 1;
wp->w_curswant = wp->w_cursor.col = 0;
#ifdef FEAT_VIRTUALEDIT
wp->w_cursor.coladd = 0;
#endif
wp->w_pcmark.lnum = 1; /* pcmark not cleared but set to line 1 */
wp->w_pcmark.col = 0;
wp->w_prev_pcmark.lnum = 0;
wp->w_prev_pcmark.col = 0;
wp->w_topline = 1;
#ifdef FEAT_DIFF
wp->w_topfill = 0;
#endif
wp->w_botline = 2;
#ifdef FEAT_FKMAP
if (curwin->w_p_rl)
wp->w_farsi = W_CONV + W_R_L;
else
wp->w_farsi = W_CONV;
#endif
}
/*
* Allocate the first window and put an empty buffer in it.
* Called from main().
* When this fails we can't do anything: exit.
*/
void
win_alloc_first()
{
curwin = win_alloc(NULL);
curbuf = buflist_new(NULL, NULL, 1L, BLN_LISTED);
if (curwin == NULL || curbuf == NULL)
mch_exit(0);
curwin->w_buffer = curbuf;
curbuf->b_nwindows = 1; /* there is one window */
#ifdef FEAT_WINDOWS
curwin->w_alist = &global_alist;
#endif
win_init(curwin); /* init current window */
topframe = (frame_T *)alloc_clear((unsigned)sizeof(frame_T));
if (topframe == NULL)
mch_exit(0);
topframe->fr_layout = FR_LEAF;
#ifdef FEAT_VERTSPLIT
topframe->fr_width = Columns;
#endif
topframe->fr_height = Rows - p_ch;
topframe->fr_win = curwin;
curwin->w_frame = topframe;
}
#if defined(FEAT_WINDOWS) || defined(PROTO)
/*
* Go to another window.
* When jumping to another buffer, stop Visual mode. Do this before
* changing windows so we can yank the selection into the '*' register.
* When jumping to another window on the same buffer, adjust its cursor
* position to keep the same Visual area.
*/
void
win_goto(wp)
win_T *wp;
{
#ifdef FEAT_CMDWIN
if (cmdwin_type != 0)
{
beep_flush();
return;
}
#endif
#ifdef FEAT_VISUAL
if (wp->w_buffer != curbuf)
reset_VIsual_and_resel();
else if (VIsual_active)
wp->w_cursor = curwin->w_cursor;
#endif
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
win_enter(wp, TRUE);
}
#if defined(FEAT_PERL) || defined(PROTO)
/*
* Find window number "winnr" (counting top to bottom).
*/
win_T *
win_find_nr(winnr)
int winnr;
{
win_T *wp;
# ifdef FEAT_WINDOWS
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (--winnr == 0)
break;
return wp;
# else
return curwin;
# endif
}
#endif
#ifdef FEAT_VERTSPLIT
/*
* Move to window above or below "count" times.
*/
static void
win_goto_ver(up, count)
int up; /* TRUE to go to win above */
long count;
{
frame_T *fr;
frame_T *nfr;
frame_T *foundfr;
foundfr = curwin->w_frame;
while (count--)
{
/*
* First go upwards in the tree of frames until we find a upwards or
* downwards neighbor.
*/
fr = foundfr;
for (;;)
{
if (fr == topframe)
goto end;
if (up)
nfr = fr->fr_prev;
else
nfr = fr->fr_next;
if (fr->fr_parent->fr_layout == FR_COL && nfr != NULL)
break;
fr = fr->fr_parent;
}
/*
* Now go downwards to find the bottom or top frame in it.
*/
for (;;)
{
if (nfr->fr_layout == FR_LEAF)
{
foundfr = nfr;
break;
}
fr = nfr->fr_child;
if (nfr->fr_layout == FR_ROW)
{
/* Find the frame at the cursor row. */
while (fr->fr_next != NULL
&& frame2win(fr)->w_wincol + fr->fr_width
<= curwin->w_wincol + curwin->w_wcol)
fr = fr->fr_next;
}
if (nfr->fr_layout == FR_COL && up)
while (fr->fr_next != NULL)
fr = fr->fr_next;
nfr = fr;
}
}
end:
if (foundfr != NULL)
win_goto(foundfr->fr_win);
}
/*
* Move to left or right window.
*/
static void
win_goto_hor(left, count)
int left; /* TRUE to go to left win */
long count;
{
frame_T *fr;
frame_T *nfr;
frame_T *foundfr;
foundfr = curwin->w_frame;
while (count--)
{
/*
* First go upwards in the tree of frames until we find a left or
* right neighbor.
*/
fr = foundfr;
for (;;)
{
if (fr == topframe)
goto end;
if (left)
nfr = fr->fr_prev;
else
nfr = fr->fr_next;
if (fr->fr_parent->fr_layout == FR_ROW && nfr != NULL)
break;
fr = fr->fr_parent;
}
/*
* Now go downwards to find the leftmost or rightmost frame in it.
*/
for (;;)
{
if (nfr->fr_layout == FR_LEAF)
{
foundfr = nfr;
break;
}
fr = nfr->fr_child;
if (nfr->fr_layout == FR_COL)
{
/* Find the frame at the cursor row. */
while (fr->fr_next != NULL
&& frame2win(fr)->w_winrow + fr->fr_height
<= curwin->w_winrow + curwin->w_wrow)
fr = fr->fr_next;
}
if (nfr->fr_layout == FR_ROW && left)
while (fr->fr_next != NULL)
fr = fr->fr_next;
nfr = fr;
}
}
end:
if (foundfr != NULL)
win_goto(foundfr->fr_win);
}
#endif
/*
* Make window "wp" the current window.
*/
void
win_enter(wp, undo_sync)
win_T *wp;
int undo_sync;
{
win_enter_ext(wp, undo_sync, FALSE);
}
/*
* Make window wp the current window.
* Can be called with "curwin_invalid" TRUE, which means that curwin has just
* been closed and isn't valid.
*/
static void
win_enter_ext(wp, undo_sync, curwin_invalid)
win_T *wp;
int undo_sync;
int curwin_invalid;
{
#ifdef FEAT_AUTOCMD
int other_buffer = FALSE;
#endif
if (wp == curwin && !curwin_invalid) /* nothing to do */
return;
#ifdef FEAT_AUTOCMD
if (!curwin_invalid)
{
/*
* Be careful: If autocommands delete the window, return now.
*/
if (wp->w_buffer != curbuf)
{
apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
other_buffer = TRUE;
if (!win_valid(wp))
return;
}
apply_autocmds(EVENT_WINLEAVE, NULL, NULL, FALSE, curbuf);
if (!win_valid(wp))
return;
# ifdef FEAT_EVAL
/* autocmds may abort script processing */
if (aborting())
return;
# endif
}
#endif
/* sync undo before leaving the current buffer */
if (undo_sync && curbuf != wp->w_buffer)
u_sync();
/* may have to copy the buffer options when 'cpo' contains 'S' */
if (wp->w_buffer != curbuf)
buf_copy_options(wp->w_buffer, BCO_ENTER | BCO_NOHELP);
if (!curwin_invalid)
{
prevwin = curwin; /* remember for CTRL-W p */
curwin->w_redr_status = TRUE;
}
curwin = wp;
curbuf = wp->w_buffer;
check_cursor();
#ifdef FEAT_VIRTUALEDIT
if (!virtual_active())
curwin->w_cursor.coladd = 0;
#endif
changed_line_abv_curs(); /* assume cursor position needs updating */
if (curwin->w_localdir != NULL)
{
/* Window has a local directory: Save current directory as global
* directory (unless that was done already) and change to the local
* directory. */
if (globaldir == NULL)
{
char_u cwd[MAXPATHL];
if (mch_dirname(cwd, MAXPATHL) == OK)
globaldir = vim_strsave(cwd);
}
mch_chdir((char *)curwin->w_localdir);
shorten_fnames(TRUE);
}
else if (globaldir != NULL)
{
/* Window doesn't have a local directory and we are not in the global
* directory: Change to the global directory. */
mch_chdir((char *)globaldir);
vim_free(globaldir);
globaldir = NULL;
shorten_fnames(TRUE);
}
#ifdef FEAT_AUTOCMD
apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
if (other_buffer)
apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
#endif
#ifdef FEAT_TITLE
maketitle();
#endif
curwin->w_redr_status = TRUE;
if (restart_edit)
redraw_later(VALID); /* causes status line redraw */
/* set window height to desired minimal value */
if (curwin->w_height < p_wh && !curwin->w_p_wfh)
win_setheight((int)p_wh);
else if (curwin->w_height == 0)
win_setheight(1);
#ifdef FEAT_VERTSPLIT
/* set window width to desired minimal value */
if (curwin->w_width < p_wiw)
win_setwidth((int)p_wiw);
#endif
#ifdef FEAT_MOUSE
setmouse(); /* in case jumped to/from help buffer */
#endif
#if defined(FEAT_NETBEANS_INTG) || defined(FEAT_SUN_WORKSHOP)
/* Change directories when the acd option is set on and after
* switching windows. */
if (p_acd && curbuf->b_ffname != NULL
&& vim_chdirfile(curbuf->b_ffname) == OK)
shorten_fnames(TRUE);
#endif
}
#endif /* FEAT_WINDOWS */
#if defined(FEAT_WINDOWS) || defined(FEAT_SIGNS) || defined(PROTO)
/*
* Jump to the first open window that contains buffer buf if one exists
* TODO: Alternatively jump to last open window? Dependent from 'splitbelow'?
* Returns pointer to window if it exists, otherwise NULL.
*/
win_T *
buf_jump_open_win(buf)
buf_T *buf;
{
# ifdef FEAT_WINDOWS
win_T *wp;
for (wp = firstwin; wp; wp = wp->w_next)
if (wp->w_buffer == buf)
break;
if (wp != NULL)
win_enter(wp, FALSE);
return wp;
# else
if (curwin->w_buffer == buf)
return curwin;
return NULL;
# endif
}
#endif
/*
* allocate a window structure and link it in the window list
*/
/*ARGSUSED*/
static win_T *
win_alloc(after)
win_T *after;
{
win_T *newwin;
/*
* allocate window structure and linesizes arrays
*/
newwin = (win_T *)alloc_clear((unsigned)sizeof(win_T));
if (newwin != NULL && win_alloc_lines(newwin) == FAIL)
{
vim_free(newwin);
newwin = NULL;
}
if (newwin != NULL)
{
/*
* link the window in the window list
*/
#ifdef FEAT_WINDOWS
win_append(after, newwin);
#endif
#ifdef FEAT_VERTSPLIT
newwin->w_wincol = 0;
newwin->w_width = Columns;
#endif
/* position the display and the cursor at the top of the file. */
newwin->w_topline = 1;
#ifdef FEAT_DIFF
newwin->w_topfill = 0;
#endif
newwin->w_botline = 2;
newwin->w_cursor.lnum = 1;
#ifdef FEAT_SCROLLBIND
newwin->w_scbind_pos = 1;
#endif
/* We won't calculate w_fraction until resizing the window */
newwin->w_fraction = 0;
newwin->w_prev_fraction_row = -1;
#ifdef FEAT_GUI
if (gui.in_use)
{
out_flush();
gui_create_scrollbar(&newwin->w_scrollbars[SBAR_LEFT],
SBAR_LEFT, newwin);
gui_create_scrollbar(&newwin->w_scrollbars[SBAR_RIGHT],
SBAR_RIGHT, newwin);
}
#endif
#ifdef FEAT_EVAL
var_init(&newwin->w_vars); /* init internal variables */
#endif
#ifdef FEAT_FOLDING
foldInitWin(newwin);
#endif
}
return newwin;
}
#if defined(FEAT_WINDOWS) || defined(PROTO)
/*
* remove window 'wp' from the window list and free the structure
*/
static void
win_free(wp)
win_T *wp;
{
int i;
#ifdef FEAT_MZSCHEME
mzscheme_window_free(wp);
#endif
#ifdef FEAT_PERL
perl_win_free(wp);
#endif
#ifdef FEAT_PYTHON
python_window_free(wp);
#endif
#ifdef FEAT_TCL
tcl_window_free(wp);
#endif
#ifdef FEAT_RUBY
ruby_window_free(wp);
#endif
clear_winopt(&wp->w_onebuf_opt);
clear_winopt(&wp->w_allbuf_opt);
#ifdef FEAT_EVAL
var_clear(&wp->w_vars); /* free all internal variables */
#endif
if (prevwin == wp)
prevwin = NULL;
win_free_lsize(wp);
for (i = 0; i < wp->w_tagstacklen; ++i)
vim_free(wp->w_tagstack[i].tagname);
vim_free(wp->w_localdir);
#ifdef FEAT_SEARCH_EXTRA
vim_free(wp->w_match.regprog);
#endif
#ifdef FEAT_JUMPLIST
free_jumplist(wp);
#endif
#ifdef FEAT_GUI
if (gui.in_use)
{
out_flush();
gui_mch_destroy_scrollbar(&wp->w_scrollbars[SBAR_LEFT]);
gui_mch_destroy_scrollbar(&wp->w_scrollbars[SBAR_RIGHT]);
}
#endif /* FEAT_GUI */
win_remove(wp);
vim_free(wp);
}
/*
* Append window "wp" in the window list after window "after".
*/
static void
win_append(after, wp)
win_T *after, *wp;
{
win_T *before;
if (after == NULL) /* after NULL is in front of the first */
before = firstwin;
else
before = after->w_next;
wp->w_next = before;
wp->w_prev = after;
if (after == NULL)
firstwin = wp;
else
after->w_next = wp;
if (before == NULL)
lastwin = wp;
else
before->w_prev = wp;
}
/*
* Remove a window from the window list.
*/
static void
win_remove(wp)
win_T *wp;
{
if (wp->w_prev != NULL)
wp->w_prev->w_next = wp->w_next;
else
firstwin = wp->w_next;
if (wp->w_next != NULL)
wp->w_next->w_prev = wp->w_prev;
else
lastwin = wp->w_prev;
}
/*
* Append frame "frp" in a frame list after frame "after".
*/
static void
frame_append(after, frp)
frame_T *after, *frp;
{
frp->fr_next = after->fr_next;
after->fr_next = frp;
if (frp->fr_next != NULL)
frp->fr_next->fr_prev = frp;
frp->fr_prev = after;
}
/*
* Insert frame "frp" in a frame list before frame "before".
*/
static void
frame_insert(before, frp)
frame_T *before, *frp;
{
frp->fr_next = before;
frp->fr_prev = before->fr_prev;
before->fr_prev = frp;
if (frp->fr_prev != NULL)
frp->fr_prev->fr_next = frp;
else
frp->fr_parent->fr_child = frp;
}
/*
* Remove a frame from a frame list.
*/
static void
frame_remove(frp)
frame_T *frp;
{
if (frp->fr_prev != NULL)
frp->fr_prev->fr_next = frp->fr_next;
else
frp->fr_parent->fr_child = frp->fr_next;
if (frp->fr_next != NULL)
frp->fr_next->fr_prev = frp->fr_prev;
}
#endif /* FEAT_WINDOWS */
/*
* Allocate w_lines[] for window "wp".
* Return FAIL for failure, OK for success.
*/
int
win_alloc_lines(wp)
win_T *wp;
{
wp->w_lines_valid = 0;
wp->w_lines = (wline_T *)alloc((unsigned)(Rows * sizeof(wline_T)));
if (wp->w_lines == NULL)
return FAIL;
return OK;
}
/*
* free lsize arrays for a window
*/
void
win_free_lsize(wp)
win_T *wp;
{
vim_free(wp->w_lines);
wp->w_lines = NULL;
}
/*
* Called from win_new_shellsize() after Rows changed.
*/
void
shell_new_rows()
{
int h = (int)(Rows - p_ch);
if (firstwin == NULL) /* not initialized yet */
return;
#ifdef FEAT_WINDOWS
if (h < frame_minheight(topframe, NULL))
h = frame_minheight(topframe, NULL);
/* First try setting the heights of windows without 'winfixheight'. If
* that doesn't result in the right height, forget about that option. */
frame_new_height(topframe, h, FALSE, TRUE);
if (topframe->fr_height != h)
frame_new_height(topframe, h, FALSE, FALSE);
(void)win_comp_pos(); /* recompute w_winrow and w_wincol */
#else
if (h < 1)
h = 1;
win_new_height(firstwin, h);
#endif
compute_cmdrow();
#if 0
/* Disabled: don't want making the screen smaller make a window larger. */
if (p_ea)
win_equal(curwin, FALSE, 'v');
#endif
}
#if defined(FEAT_VERTSPLIT) || defined(PROTO)
/*
* Called from win_new_shellsize() after Columns changed.
*/
void
shell_new_columns()
{
if (firstwin == NULL) /* not initialized yet */
return;
frame_new_width(topframe, (int)Columns, FALSE);
(void)win_comp_pos(); /* recompute w_winrow and w_wincol */
#if 0
/* Disabled: don't want making the screen smaller make a window larger. */
if (p_ea)
win_equal(curwin, FALSE, 'h');
#endif
}
#endif
#if defined(FEAT_CMDWIN) || defined(PROTO)
/*
* Save the size of all windows in "gap".
*/
void
win_size_save(gap)
garray_T *gap;
{
win_T *wp;
ga_init2(gap, (int)sizeof(int), 1);
if (ga_grow(gap, win_count() * 2) == OK)
for (wp = firstwin; wp != NULL; wp = wp->w_next)
{
((int *)gap->ga_data)[gap->ga_len++] =
wp->w_width + wp->w_vsep_width;
((int *)gap->ga_data)[gap->ga_len++] = wp->w_height;
}
}
/*
* Restore window sizes, but only if the number of windows is still the same.
* Does not free the growarray.
*/
void
win_size_restore(gap)
garray_T *gap;
{
win_T *wp;
int i;
if (win_count() * 2 == gap->ga_len)
{
i = 0;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
{
frame_setwidth(wp->w_frame, ((int *)gap->ga_data)[i++]);
win_setheight_win(((int *)gap->ga_data)[i++], wp);
}
/* recompute the window positions */
(void)win_comp_pos();
}
}
#endif /* FEAT_CMDWIN */
#if defined(FEAT_WINDOWS) || defined(PROTO)
/*
* Update the position for all windows, using the width and height of the
* frames.
* Returns the row just after the last window.
*/
static int
win_comp_pos()
{
int row = 0;
int col = 0;
frame_comp_pos(topframe, &row, &col);
return row;
}
/*
* Update the position of the windows in frame "topfrp", using the width and
* height of the frames.
* "*row" and "*col" are the top-left position of the frame. They are updated
* to the bottom-right position plus one.
*/
static void
frame_comp_pos(topfrp, row, col)
frame_T *topfrp;
int *row;
int *col;
{
win_T *wp;
frame_T *frp;
#ifdef FEAT_VERTSPLIT
int startcol;
int startrow;
#endif
wp = topfrp->fr_win;
if (wp != NULL)
{
if (wp->w_winrow != *row
#ifdef FEAT_VERTSPLIT
|| wp->w_wincol != *col
#endif
)
{
/* position changed, redraw */
wp->w_winrow = *row;
#ifdef FEAT_VERTSPLIT
wp->w_wincol = *col;
#endif
redraw_win_later(wp, NOT_VALID);
wp->w_redr_status = TRUE;
}
*row += wp->w_height + wp->w_status_height;
#ifdef FEAT_VERTSPLIT
*col += wp->w_width + wp->w_vsep_width;
#endif
}
else
{
#ifdef FEAT_VERTSPLIT
startrow = *row;
startcol = *col;
#endif
for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
{
#ifdef FEAT_VERTSPLIT
if (topfrp->fr_layout == FR_ROW)
*row = startrow; /* all frames are at the same row */
else
*col = startcol; /* all frames are at the same col */
#endif
frame_comp_pos(frp, row, col);
}
}
}
#endif /* FEAT_WINDOWS */
/*
* Set current window height and take care of repositioning other windows to
* fit around it.
*/
void
win_setheight(height)
int height;
{
win_setheight_win(height, curwin);
}
/*
* Set the window height of window "win" and take care of repositioning other
* windows to fit around it.
*/
void
win_setheight_win(height, win)
int height;
win_T *win;
{
int row;
if (win == curwin)
{
/* Always keep current window at least one line high, even when
* 'winminheight' is zero. */
#ifdef FEAT_WINDOWS
if (height < p_wmh)
height = p_wmh;
#endif
if (height == 0)
height = 1;
}
#ifdef FEAT_WINDOWS
frame_setheight(win->w_frame, height + win->w_status_height);
/* recompute the window positions */
row = win_comp_pos();
#else
if (height > topframe->fr_height)
height = topframe->fr_height;
win->w_height = height;
row = height;
#endif
/*
* If there is extra space created between the last window and the command
* line, clear it.
*/
if (full_screen && msg_scrolled == 0 && row < cmdline_row)
screen_fill(row, cmdline_row, 0, (int)Columns, ' ', ' ', 0);
cmdline_row = row;
msg_row = row;
msg_col = 0;
redraw_all_later(NOT_VALID);
}
#if defined(FEAT_WINDOWS) || defined(PROTO)
/*
* Set the height of a frame to "height" and take care that all frames and
* windows inside it are resized. Also resize frames on the left and right if
* the are in the same FR_ROW frame.
*
* Strategy:
* If the frame is part of a FR_COL frame, try fitting the frame in that
* frame. If that doesn't work (the FR_COL frame is too small), recursively
* go to containing frames to resize them and make room.
* If the frame is part of a FR_ROW frame, all frames must be resized as well.
* Check for the minimal height of the FR_ROW frame.
* At the top level we can also use change the command line height.
*/
static void
frame_setheight(curfrp, height)
frame_T *curfrp;
int height;
{
int room; /* total number of lines available */
int take; /* number of lines taken from other windows */
int room_cmdline; /* lines available from cmdline */
int run;
frame_T *frp;
int h;
int room_reserved;
/* If the height already is the desired value, nothing to do. */
if (curfrp->fr_height == height)
return;
if (curfrp->fr_parent == NULL)
{
/* topframe: can only change the command line */
if (height > Rows - p_ch)
height = Rows - p_ch;
if (height > 0)
frame_new_height(curfrp, height, FALSE, FALSE);
}
else if (curfrp->fr_parent->fr_layout == FR_ROW)
{
/* Row of frames: Also need to resize frames left and right of this
* one. First check for the minimal height of these. */
h = frame_minheight(curfrp->fr_parent, NULL);
if (height < h)
height = h;
frame_setheight(curfrp->fr_parent, height);
}
else
{
/*
* Column of frames: try to change only frames in this column.
*/
#ifdef FEAT_VERTSPLIT
/*
* Do this twice:
* 1: compute room available, if it's not enough try resizing the
* containing frame.
* 2: compute the room available and adjust the height to it.
* Try not to reduce the height of a window with 'winfixheight' set.
*/
for (run = 1; run <= 2; ++run)
#else
for (;;)
#endif
{
room = 0;
room_reserved = 0;
for (frp = curfrp->fr_parent->fr_child; frp != NULL;
frp = frp->fr_next)
{
if (frp != curfrp
&& frp->fr_win != NULL
&& frp->fr_win->w_p_wfh)
room_reserved += frp->fr_height;
room += frp->fr_height;
if (frp != curfrp)
room -= frame_minheight(frp, NULL);
}
#ifdef FEAT_VERTSPLIT
if (curfrp->fr_width != Columns)
room_cmdline = 0;
else
#endif
{
room_cmdline = Rows - p_ch - (lastwin->w_winrow
+ lastwin->w_height + lastwin->w_status_height);
if (room_cmdline < 0)
room_cmdline = 0;
}
if (height <= room + room_cmdline)
break;
#ifdef FEAT_VERTSPLIT
if (run == 2 || curfrp->fr_width == Columns)
#endif
{
if (height > room + room_cmdline)
height = room + room_cmdline;
break;
}
#ifdef FEAT_VERTSPLIT
frame_setheight(curfrp->fr_parent, height
+ frame_minheight(curfrp->fr_parent, NOWIN) - (int)p_wmh - 1);
#endif
/*NOTREACHED*/
}
/*
* Compute the number of lines we will take from others frames (can be
* negative!).
*/
take = height - curfrp->fr_height;
/* If there is not enough room, also reduce the height of a window
* with 'winfixheight' set. */
if (height > room + room_cmdline - room_reserved)
room_reserved = room + room_cmdline - height;
/* If there is only a 'winfixheight' window and making the
* window smaller, need to make the other window taller. */
if (take < 0 && room - curfrp->fr_height < room_reserved)
room_reserved = 0;
if (take > 0 && room_cmdline > 0)
{
/* use lines from cmdline first */
if (take < room_cmdline)
room_cmdline = take;
take -= room_cmdline;
topframe->fr_height += room_cmdline;
}
/*
* set the current frame to the new height
*/
frame_new_height(curfrp, height, FALSE, FALSE);
/*
* First take lines from the frames after the current frame. If
* that is not enough, takes lines from frames above the current
* frame.
*/
for (run = 0; run < 2; ++run)
{
if (run == 0)
frp = curfrp->fr_next; /* 1st run: start with next window */
else
frp = curfrp->fr_prev; /* 2nd run: start with prev window */
while (frp != NULL && take != 0)
{
h = frame_minheight(frp, NULL);
if (room_reserved > 0
&& frp->fr_win != NULL
&& frp->fr_win->w_p_wfh)
{
if (room_reserved >= frp->fr_height)
room_reserved -= frp->fr_height;
else
{
if (frp->fr_height - room_reserved > take)
room_reserved = frp->fr_height - take;
take -= frp->fr_height - room_reserved;
frame_new_height(frp, room_reserved, FALSE, FALSE);
room_reserved = 0;
}
}
else
{
if (frp->fr_height - take < h)
{
take -= frp->fr_height - h;
frame_new_height(frp, h, FALSE, FALSE);
}
else
{
frame_new_height(frp, frp->fr_height - take,
FALSE, FALSE);
take = 0;
}
}
if (run == 0)
frp = frp->fr_next;
else
frp = frp->fr_prev;
}
}
}
}
#if defined(FEAT_VERTSPLIT) || defined(PROTO)
/*
* Set current window width and take care of repositioning other windows to
* fit around it.
*/
void
win_setwidth(width)
int width;
{
win_setwidth_win(width, curwin);
}
void
win_setwidth_win(width, wp)
int width;
win_T *wp;
{
/* Always keep current window at least one column wide, even when
* 'winminwidth' is zero. */
if (wp == curwin)
{
if (width < p_wmw)
width = p_wmw;
if (width == 0)
width = 1;
}
frame_setwidth(wp->w_frame, width + wp->w_vsep_width);
/* recompute the window positions */
(void)win_comp_pos();
redraw_all_later(NOT_VALID);
}
/*
* Set the width of a frame to "width" and take care that all frames and
* windows inside it are resized. Also resize frames above and below if the
* are in the same FR_ROW frame.
*
* Strategy is similar to frame_setheight().
*/
static void
frame_setwidth(curfrp, width)
frame_T *curfrp;
int width;
{
int room; /* total number of lines available */
int take; /* number of lines taken from other windows */
int run;
frame_T *frp;
int w;
/* If the width already is the desired value, nothing to do. */
if (curfrp->fr_width == width)
return;
if (curfrp->fr_parent == NULL)
/* topframe: can't change width */
return;
if (curfrp->fr_parent->fr_layout == FR_COL)
{
/* Column of frames: Also need to resize frames above and below of
* this one. First check for the minimal width of these. */
w = frame_minwidth(curfrp->fr_parent, NULL);
if (width < w)
width = w;
frame_setwidth(curfrp->fr_parent, width);
}
else
{
/*
* Row of frames: try to change only frames in this row.
*
* Do this twice:
* 1: compute room available, if it's not enough try resizing the
* containing frame.
* 2: compute the room available and adjust the width to it.
*/
for (run = 1; run <= 2; ++run)
{
room = 0;
for (frp = curfrp->fr_parent->fr_child; frp != NULL;
frp = frp->fr_next)
{
room += frp->fr_width;
if (frp != curfrp)
room -= frame_minwidth(frp, NULL);
}
if (width <= room)
break;
if (run == 2 || curfrp->fr_height >= Rows - p_ch)
{
if (width > room)
width = room;
break;
}
frame_setwidth(curfrp->fr_parent, width
+ frame_minwidth(curfrp->fr_parent, NOWIN) - (int)p_wmw - 1);
}
/*
* Compute the number of lines we will take from others frames (can be
* negative!).
*/
take = width - curfrp->fr_width;
/*
* set the current frame to the new width
*/
frame_new_width(curfrp, width, FALSE);
/*
* First take lines from the frames right of the current frame. If
* that is not enough, takes lines from frames left of the current
* frame.
*/
for (run = 0; run < 2; ++run)
{
if (run == 0)
frp = curfrp->fr_next; /* 1st run: start with next window */
else
frp = curfrp->fr_prev; /* 2nd run: start with prev window */
while (frp != NULL && take != 0)
{
w = frame_minwidth(frp, NULL);
if (frp->fr_width - take < w)
{
take -= frp->fr_width - w;
frame_new_width(frp, w, FALSE);
}
else
{
frame_new_width(frp, frp->fr_width - take, FALSE);
take = 0;
}
if (run == 0)
frp = frp->fr_next;
else
frp = frp->fr_prev;
}
}
}
}
#endif /* FEAT_VERTSPLIT */
/*
* Check 'winminheight' for a valid value.
*/
void
win_setminheight()
{
int room;
int first = TRUE;
win_T *wp;
/* loop until there is a 'winminheight' that is possible */
while (p_wmh > 0)
{
/* TODO: handle vertical splits */
room = -p_wh;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
room += wp->w_height - p_wmh;
if (room >= 0)
break;
--p_wmh;
if (first)
{
EMSG(_(e_noroom));
first = FALSE;
}
}
}
#ifdef FEAT_MOUSE
/*
* Status line of dragwin is dragged "offset" lines down (negative is up).
*/
void
win_drag_status_line(dragwin, offset)
win_T *dragwin;
int offset;
{
frame_T *curfr;
frame_T *fr;
int room;
int row;
int up; /* if TRUE, drag status line up, otherwise down */
int n;
fr = dragwin->w_frame;
curfr = fr;
if (fr != topframe) /* more than one window */
{
fr = fr->fr_parent;
/* When the parent frame is not a column of frames, its parent should
* be. */
if (fr->fr_layout != FR_COL)
{
curfr = fr;
if (fr != topframe) /* only a row of windows, may drag statusline */
fr = fr->fr_parent;
}
}
/* If this is the last frame in a column, may want to resize the parent
* frame instead (go two up to skip a row of frames). */
while (curfr != topframe && curfr->fr_next == NULL)
{
if (fr != topframe)
fr = fr->fr_parent;
curfr = fr;
if (fr != topframe)
fr = fr->fr_parent;
}
if (offset < 0) /* drag up */
{
up = TRUE;
offset = -offset;
/* sum up the room of the current frame and above it */
if (fr == curfr)
{
/* only one window */
room = fr->fr_height - frame_minheight(fr, NULL);
}
else
{
room = 0;
for (fr = fr->fr_child; ; fr = fr->fr_next)
{
room += fr->fr_height - frame_minheight(fr, NULL);
if (fr == curfr)
break;
}
}
fr = curfr->fr_next; /* put fr at frame that grows */
}
else /* drag down */
{
up = FALSE;
/*
* Only dragging the last status line can reduce p_ch.
*/
room = Rows - cmdline_row;
if (curfr->fr_next == NULL)
room -= 1;
else
room -= p_ch;
if (room < 0)
room = 0;
/* sum up the room of frames below of the current one */
for (fr = curfr->fr_next; fr != NULL; fr = fr->fr_next)
room += fr->fr_height - frame_minheight(fr, NULL);
fr = curfr; /* put fr at window that grows */
}
if (room < offset) /* Not enough room */
offset = room; /* Move as far as we can */
if (offset <= 0)
return;
/*
* Grow frame fr by "offset" lines.
* Doesn't happen when dragging the last status line up.
*/
if (fr != NULL)
frame_new_height(fr, fr->fr_height + offset, up, FALSE);
if (up)
fr = curfr; /* current frame gets smaller */
else
fr = curfr->fr_next; /* next frame gets smaller */
/*
* Now make the other frames smaller.
*/
while (fr != NULL && offset > 0)
{
n = frame_minheight(fr, NULL);
if (fr->fr_height - offset <= n)
{
offset -= fr->fr_height - n;
frame_new_height(fr, n, !up, FALSE);
}
else
{
frame_new_height(fr, fr->fr_height - offset, !up, FALSE);
break;
}
if (up)
fr = fr->fr_prev;
else
fr = fr->fr_next;
}
row = win_comp_pos();
screen_fill(row, cmdline_row, 0, (int)Columns, ' ', ' ', 0);
cmdline_row = row;
p_ch = Rows - cmdline_row;
if (p_ch < 1)
p_ch = 1;
redraw_all_later(NOT_VALID);
showmode();
}
#ifdef FEAT_VERTSPLIT
/*
* Separator line of dragwin is dragged "offset" lines right (negative is left).
*/
void
win_drag_vsep_line(dragwin, offset)
win_T *dragwin;
int offset;
{
frame_T *curfr;
frame_T *fr;
int room;
int left; /* if TRUE, drag separator line left, otherwise right */
int n;
fr = dragwin->w_frame;
if (fr == topframe) /* only one window (cannot happe?) */
return;
curfr = fr;
fr = fr->fr_parent;
/* When the parent frame is not a row of frames, its parent should be. */
if (fr->fr_layout != FR_ROW)
{
if (fr == topframe) /* only a column of windows (cannot happen?) */
return;
curfr = fr;
fr = fr->fr_parent;
}
/* If this is the last frame in a row, may want to resize a parent
* frame instead. */
while (curfr->fr_next == NULL)
{
if (fr == topframe)
break;
curfr = fr;
fr = fr->fr_parent;
if (fr != topframe)
{
curfr = fr;
fr = fr->fr_parent;
}
}
if (offset < 0) /* drag left */
{
left = TRUE;
offset = -offset;
/* sum up the room of the current frame and left of it */
room = 0;
for (fr = fr->fr_child; ; fr = fr->fr_next)
{
room += fr->fr_width - frame_minwidth(fr, NULL);
if (fr == curfr)
break;
}
fr = curfr->fr_next; /* put fr at frame that grows */
}
else /* drag right */
{
left = FALSE;
/* sum up the room of frames right of the current one */
room = 0;
for (fr = curfr->fr_next; fr != NULL; fr = fr->fr_next)
room += fr->fr_width - frame_minwidth(fr, NULL);
fr = curfr; /* put fr at window that grows */
}
if (room < offset) /* Not enough room */
offset = room; /* Move as far as we can */
if (offset <= 0) /* No room at all, quit. */
return;
/* grow frame fr by offset lines */
frame_new_width(fr, fr->fr_width + offset, left);
/* shrink other frames: current and at the left or at the right */
if (left)
fr = curfr; /* current frame gets smaller */
else
fr = curfr->fr_next; /* next frame gets smaller */
while (fr != NULL && offset > 0)
{
n = frame_minwidth(fr, NULL);
if (fr->fr_width - offset <= n)
{
offset -= fr->fr_width - n;
frame_new_width(fr, n, !left);
}
else
{
frame_new_width(fr, fr->fr_width - offset, !left);
break;
}
if (left)
fr = fr->fr_prev;
else
fr = fr->fr_next;
}
(void)win_comp_pos();
redraw_all_later(NOT_VALID);
}
#endif /* FEAT_VERTSPLIT */
#endif /* FEAT_MOUSE */
#endif /* FEAT_WINDOWS */
/*
* Set the height of a window.
* This takes care of the things inside the window, not what happens to the
* window position, the frame or to other windows.
*/
static void
win_new_height(wp, height)
win_T *wp;
int height;
{
linenr_T lnum;
int sline, line_size;
#define FRACTION_MULT 16384L
/* Don't want a negative height. Happens when splitting a tiny window.
* Will equalize heights soon to fix it. */
if (height < 0)
height = 0;
if (wp->w_wrow != wp->w_prev_fraction_row && wp->w_height > 0)
wp->w_fraction = ((long)wp->w_wrow * FRACTION_MULT
+ FRACTION_MULT / 2) / (long)wp->w_height;
wp->w_height = height;
wp->w_skipcol = 0;
/* Don't change w_topline when height is zero. Don't set w_topline when
* 'scrollbind' is set and this isn't the current window. */
if (height > 0
#ifdef FEAT_SCROLLBIND
&& (!wp->w_p_scb || wp == curwin)
#endif
)
{
lnum = wp->w_cursor.lnum;
if (lnum < 1) /* can happen when starting up */
lnum = 1;
wp->w_wrow = ((long)wp->w_fraction * (long)height - 1L) / FRACTION_MULT;
line_size = plines_win_col(wp, lnum, (long)(wp->w_cursor.col)) - 1;
sline = wp->w_wrow - line_size;
if (sline < 0)
{
/*
* Cursor line would go off top of screen if w_wrow was this high.
*/
wp->w_wrow = line_size;
}
else
{
while (sline > 0 && lnum > 1)
{
#ifdef FEAT_FOLDING
hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL);
if (lnum == 1)
{
/* first line in buffer is folded */
line_size = 1;
--sline;
break;
}
#endif
--lnum;
#ifdef FEAT_DIFF
if (lnum == wp->w_topline)
line_size = plines_win_nofill(wp, lnum, TRUE)
+ wp->w_topfill;
else
#endif
line_size = plines_win(wp, lnum, TRUE);
sline -= line_size;
}
if (sline < 0)
{
/*
* Line we want at top would go off top of screen. Use next
* line instead.
*/
#ifdef FEAT_FOLDING
hasFoldingWin(wp, lnum, NULL, &lnum, TRUE, NULL);
#endif
lnum++;
wp->w_wrow -= line_size + sline;
}
else if (sline > 0)
{
/* First line of file reached, use that as topline. */
lnum = 1;
wp->w_wrow -= sline;
}
}
set_topline(wp, lnum);
}
if (wp == curwin)
{
if (p_so)
update_topline();
curs_columns(FALSE); /* validate w_wrow */
}
wp->w_prev_fraction_row = wp->w_wrow;
win_comp_scroll(wp);
redraw_win_later(wp, NOT_VALID);
#ifdef FEAT_WINDOWS
wp->w_redr_status = TRUE;
#endif
invalidate_botline_win(wp);
}
#ifdef FEAT_VERTSPLIT
/*
* Set the width of a window.
*/
static void
win_new_width(wp, width)
win_T *wp;
int width;
{
wp->w_width = width;
wp->w_lines_valid = 0;
changed_line_abv_curs_win(wp);
invalidate_botline_win(wp);
if (wp == curwin)
{
update_topline();
curs_columns(TRUE); /* validate w_wrow */
}
redraw_win_later(wp, NOT_VALID);
wp->w_redr_status = TRUE;
}
#endif
void
win_comp_scroll(wp)
win_T *wp;
{
wp->w_p_scr = ((unsigned)wp->w_height >> 1);
if (wp->w_p_scr == 0)
wp->w_p_scr = 1;
}
/*
* command_height: called whenever p_ch has been changed
*/
void
command_height(old_p_ch)
long old_p_ch;
{
#ifdef FEAT_WINDOWS
int h;
frame_T *frp;
/* Find bottom frame with width of screen. */
frp = lastwin->w_frame;
# ifdef FEAT_VERTSPLIT
while (frp->fr_width != Columns && frp->fr_parent != NULL)
frp = frp->fr_parent;
# endif
/* Avoid changing the height of a window with 'winfixheight' set. */
while (frp->fr_prev != NULL && frp->fr_layout == FR_LEAF
&& frp->fr_win->w_p_wfh)
frp = frp->fr_prev;
if (starting != NO_SCREEN)
{
cmdline_row = Rows - p_ch;
if (p_ch > old_p_ch) /* p_ch got bigger */
{
while (p_ch > old_p_ch)
{
if (frp == NULL)
{
EMSG(_(e_noroom));
p_ch = old_p_ch;
cmdline_row = Rows - p_ch;
break;
}
h = frp->fr_height - frame_minheight(frp, NULL);
if (h > p_ch - old_p_ch)
h = p_ch - old_p_ch;
old_p_ch += h;
frame_add_height(frp, -h);
frp = frp->fr_prev;
}
/* Recompute window positions. */
(void)win_comp_pos();
/* clear the lines added to cmdline */
if (full_screen)
screen_fill((int)(cmdline_row), (int)Rows, 0,
(int)Columns, ' ', ' ', 0);
msg_row = cmdline_row;
redraw_cmdline = TRUE;
return;
}
if (msg_row < cmdline_row)
msg_row = cmdline_row;
redraw_cmdline = TRUE;
}
frame_add_height(frp, (int)(old_p_ch - p_ch));
/* Recompute window positions. */
if (frp != lastwin->w_frame)
(void)win_comp_pos();
#else
win_setheight((int)(firstwin->w_height + old_p_ch - p_ch));
cmdline_row = Rows - p_ch;
#endif
}
#if defined(FEAT_WINDOWS) || defined(PROTO)
/*
* Resize frame "frp" to be "n" lines higher (negative for less high).
* Also resize the frames it is contained in.
*/
static void
frame_add_height(frp, n)
frame_T *frp;
int n;
{
frame_new_height(frp, frp->fr_height + n, FALSE, FALSE);
for (;;)
{
frp = frp->fr_parent;
if (frp == NULL)
break;
frp->fr_height += n;
}
}
/*
* Add or remove a status line for the bottom window(s), according to the
* value of 'laststatus'.
*/
void
last_status(morewin)
int morewin; /* pretend there are two or more windows */
{
/* Don't make a difference between horizontal or vertical split. */
last_status_rec(topframe, (p_ls == 2
|| (p_ls == 1 && (morewin || lastwin != firstwin))));
}
static void
last_status_rec(fr, statusline)
frame_T *fr;
int statusline;
{
frame_T *fp;
win_T *wp;
if (fr->fr_layout == FR_LEAF)
{
wp = fr->fr_win;
if (wp->w_status_height != 0 && !statusline)
{
/* remove status line */
win_new_height(wp, wp->w_height + 1);
wp->w_status_height = 0;
comp_col();
}
else if (wp->w_status_height == 0 && statusline)
{
/* Find a frame to take a line from. */
fp = fr;
while (fp->fr_height <= frame_minheight(fp, NULL))
{
if (fp == topframe)
{
EMSG(_(e_noroom));
return;
}
/* In a column of frames: go to frame above. If already at
* the top or in a row of frames: go to parent. */
if (fp->fr_parent->fr_layout == FR_COL && fp->fr_prev != NULL)
fp = fp->fr_prev;
else
fp = fp->fr_parent;
}
wp->w_status_height = 1;
if (fp != fr)
{
frame_new_height(fp, fp->fr_height - 1, FALSE, FALSE);
frame_fix_height(wp);
(void)win_comp_pos();
}
else
win_new_height(wp, wp->w_height - 1);
comp_col();
redraw_all_later(NOT_VALID);
}
}
#ifdef FEAT_VERTSPLIT
else if (fr->fr_layout == FR_ROW)
{
/* vertically split windows, set status line for each one */
for (fp = fr->fr_child; fp != NULL; fp = fp->fr_next)
last_status_rec(fp, statusline);
}
#endif
else
{
/* horizontally split window, set status line for last one */
for (fp = fr->fr_child; fp->fr_next != NULL; fp = fp->fr_next)
;
last_status_rec(fp, statusline);
}
}
#endif /* FEAT_WINDOWS */
#if defined(FEAT_SEARCHPATH) || defined(PROTO)
/*
* Return the file name under or after the cursor.
*
* The 'path' option is searched if the file name is not absolute.
* The string returned has been alloc'ed and should be freed by the caller.
* NULL is returned if the file name or file is not found.
*
* options:
* FNAME_MESS give error messages
* FNAME_EXP expand to path
* FNAME_HYP check for hypertext link
* FNAME_INCL apply "includeexpr"
*/
char_u *
file_name_at_cursor(options, count)
int options;
long count;
{
return file_name_in_line(ml_get_curline(),
curwin->w_cursor.col, options, count, curbuf->b_ffname);
}
/*
* Return the name of the file under or after ptr[col].
* Otherwise like file_name_at_cursor().
*/
char_u *
file_name_in_line(line, col, options, count, rel_fname)
char_u *line;
int col;
int options;
long count;
char_u *rel_fname; /* file we are searching relative to */
{
char_u *ptr;
int len;
/*
* search forward for what could be the start of a file name
*/
ptr = line + col;
while (*ptr != NUL && !vim_isfilec(*ptr))
++ptr;
if (*ptr == NUL) /* nothing found */
{
if (options & FNAME_MESS)
EMSG(_("E446: No file name under cursor"));
return NULL;
}
/*
* Search backward for first char of the file name.
* Go one char back to ":" before "//" even when ':' is not in 'isfname'.
*/
while (ptr > line)
{
#ifdef FEAT_MBYTE
if (has_mbyte && (len = (*mb_head_off)(line, ptr - 1)) > 0)
ptr -= len + 1;
else
#endif
if (vim_isfilec(ptr[-1])
|| ((options & FNAME_HYP) && path_is_url(ptr - 1)))
--ptr;
else
break;
}
/*
* Search forward for the last char of the file name.
* Also allow "://" when ':' is not in 'isfname'.
*/
len = 0;
while (vim_isfilec(ptr[len])
|| ((options & FNAME_HYP) && path_is_url(ptr + len)))
#ifdef FEAT_MBYTE
if (has_mbyte)
len += (*mb_ptr2len_check)(ptr + len);
else
#endif
++len;
/*
* If there is trailing punctuation, remove it.
* But don't remove "..", could be a directory name.
*/
if (len > 2 && vim_strchr((char_u *)".,:;!", ptr[len - 1]) != NULL
&& ptr[len - 2] != '.')
--len;
return find_file_name_in_path(ptr, len, options, count, rel_fname);
}
# if defined(FEAT_FIND_ID) && defined(FEAT_EVAL)
static char_u *eval_includeexpr __ARGS((char_u *ptr, int len));
static char_u *
eval_includeexpr(ptr, len)
char_u *ptr;
int len;
{
char_u *res;
set_vim_var_string(VV_FNAME, ptr, len);
res = eval_to_string_safe(curbuf->b_p_inex, NULL);
set_vim_var_string(VV_FNAME, NULL, 0);
return res;
}
#endif
/*
* Return the name of the file ptr[len] in 'path'.
* Otherwise like file_name_at_cursor().
*/
char_u *
find_file_name_in_path(ptr, len, options, count, rel_fname)
char_u *ptr;
int len;
int options;
long count;
char_u *rel_fname; /* file we are searching relative to */
{
char_u *file_name;
int c;
# if defined(FEAT_FIND_ID) && defined(FEAT_EVAL)
char_u *tofree = NULL;
if ((options & FNAME_INCL) && *curbuf->b_p_inex != NUL)
{
tofree = eval_includeexpr(ptr, len);
if (tofree != NULL)
{
ptr = tofree;
len = (int)STRLEN(ptr);
}
}
# endif
if (options & FNAME_EXP)
{
file_name = find_file_in_path(ptr, len, options & ~FNAME_MESS,
TRUE, rel_fname);
# if defined(FEAT_FIND_ID) && defined(FEAT_EVAL)
/*
* If the file could not be found in a normal way, try applying
* 'includeexpr' (unless done already).
*/
if (file_name == NULL
&& !(options & FNAME_INCL) && *curbuf->b_p_inex != NUL)
{
tofree = eval_includeexpr(ptr, len);
if (tofree != NULL)
{
ptr = tofree;
len = (int)STRLEN(ptr);
file_name = find_file_in_path(ptr, len, options & ~FNAME_MESS,
TRUE, rel_fname);
}
}
# endif
if (file_name == NULL && (options & FNAME_MESS))
{
c = ptr[len];
ptr[len] = NUL;
EMSG2(_("E447: Can't find file \"%s\" in path"), ptr);
ptr[len] = c;
}
/* Repeat finding the file "count" times. This matters when it
* appears several times in the path. */
while (file_name != NULL && --count > 0)
{
vim_free(file_name);
file_name = find_file_in_path(ptr, len, options, FALSE, rel_fname);
}
}
else
file_name = vim_strnsave(ptr, len);
# if defined(FEAT_FIND_ID) && defined(FEAT_EVAL)
vim_free(tofree);
# endif
return file_name;
}
#endif /* FEAT_SEARCHPATH */
/*
* Check if the "://" of a URL is at the pointer, return URL_SLASH.
* Also check for ":\\", which MS Internet Explorer accepts, return
* URL_BACKSLASH.
*/
static int
path_is_url(p)
char_u *p;
{
if (STRNCMP(p, "://", (size_t)3) == 0)
return URL_SLASH;
else if (STRNCMP(p, ":\\\\", (size_t)3) == 0)
return URL_BACKSLASH;
return 0;
}
/*
* Check if "fname" starts with "name://". Return URL_SLASH if it does.
* Return URL_BACKSLASH for "name:\\".
* Return zero otherwise.
*/
int
path_with_url(fname)
char_u *fname;
{
char_u *p;
for (p = fname; isalpha(*p); ++p)
;
return path_is_url(p);
}
/*
* Return TRUE if "name" is a full (absolute) path name or URL.
*/
int
vim_isAbsName(name)
char_u *name;
{
return (path_with_url(name) != 0 || mch_isFullName(name));
}
/*
* Get absolute file name into buffer 'buf' of length 'len' bytes.
*
* return FAIL for failure, OK otherwise
*/
int
vim_FullName(fname, buf, len, force)
char_u *fname, *buf;
int len;
int force;
{
int retval = OK;
int url;
*buf = NUL;
if (fname == NULL)
return FAIL;
url = path_with_url(fname);
if (!url)
retval = mch_FullName(fname, buf, len, force);
if (url || retval == FAIL)
{
/* something failed; use the file name (truncate when too long) */
STRNCPY(buf, fname, len);
buf[len - 1] = NUL;
}
#if defined(MACOS_CLASSIC) || defined(OS2) || defined(MSDOS) || defined(MSWIN)
slash_adjust(buf);
#endif
return retval;
}
/*
* Return the minimal number of rows that is needed on the screen to display
* the current number of windows.
*/
int
min_rows()
{
int total;
if (firstwin == NULL) /* not initialized yet */
return MIN_LINES;
total = 1; /* count the room for the command line */
#ifdef FEAT_WINDOWS
total += frame_minheight(topframe, NULL);
#else
total += 1; /* at least one window should have a line! */
#endif
return total;
}
/*
* Return TRUE if there is only one window, not counting a help or preview
* window, unless it is the current window.
*/
int
only_one_window()
{
#ifdef FEAT_WINDOWS
int count = 0;
win_T *wp;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (!(wp->w_buffer->b_help
# ifdef FEAT_QUICKFIX
|| wp->w_p_pvw
# endif
) || wp == curwin)
++count;
return (count <= 1);
#else
return TRUE;
#endif
}
#if defined(FEAT_WINDOWS) || defined(FEAT_AUTOCMD) || defined(PROTO)
/*
* Correct the cursor line number in other windows. Used after changing the
* current buffer, and before applying autocommands.
* When "do_curwin" is TRUE, also check current window.
*/
void
check_lnums(do_curwin)
int do_curwin;
{
win_T *wp;
#ifdef FEAT_WINDOWS
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if ((do_curwin || wp != curwin) && wp->w_buffer == curbuf)
#else
wp = curwin;
if (do_curwin)
#endif
{
if (wp->w_cursor.lnum > curbuf->b_ml.ml_line_count)
wp->w_cursor.lnum = curbuf->b_ml.ml_line_count;
if (wp->w_topline > curbuf->b_ml.ml_line_count)
wp->w_topline = curbuf->b_ml.ml_line_count;
}
}
#endif
#if defined(FEAT_WINDOWS) || defined(PROTO)
/*
* A snapshot of the window sizes, to restore them after closing the help
* window.
* Only these fields are used:
* fr_layout
* fr_width
* fr_height
* fr_next
* fr_child
* fr_win (only valid for the old curwin, NULL otherwise)
*/
static frame_T *snapshot = NULL;
/*
* Create a snapshot of the current frame sizes.
*/
static void
make_snapshot()
{
clear_snapshot();
make_snapshot_rec(topframe, &snapshot);
}
static void
make_snapshot_rec(fr, frp)
frame_T *fr;
frame_T **frp;
{
*frp = (frame_T *)alloc_clear((unsigned)sizeof(frame_T));
if (*frp == NULL)
return;
(*frp)->fr_layout = fr->fr_layout;
# ifdef FEAT_VERTSPLIT
(*frp)->fr_width = fr->fr_width;
# endif
(*frp)->fr_height = fr->fr_height;
if (fr->fr_next != NULL)
make_snapshot_rec(fr->fr_next, &((*frp)->fr_next));
if (fr->fr_child != NULL)
make_snapshot_rec(fr->fr_child, &((*frp)->fr_child));
if (fr->fr_layout == FR_LEAF && fr->fr_win == curwin)
(*frp)->fr_win = curwin;
}
/*
* Remove any existing snapshot.
*/
static void
clear_snapshot()
{
clear_snapshot_rec(snapshot);
snapshot = NULL;
}
static void
clear_snapshot_rec(fr)
frame_T *fr;
{
if (fr != NULL)
{
clear_snapshot_rec(fr->fr_next);
clear_snapshot_rec(fr->fr_child);
vim_free(fr);
}
}
/*
* Restore a previously created snapshot, if there is any.
* This is only done if the screen size didn't change and the window layout is
* still the same.
*/
static void
restore_snapshot(close_curwin)
int close_curwin; /* closing current window */
{
win_T *wp;
if (snapshot != NULL
# ifdef FEAT_VERTSPLIT
&& snapshot->fr_width == topframe->fr_width
# endif
&& snapshot->fr_height == topframe->fr_height
&& check_snapshot_rec(snapshot, topframe) == OK)
{
wp = restore_snapshot_rec(snapshot, topframe);
win_comp_pos();
if (wp != NULL && close_curwin)
win_goto(wp);
redraw_all_later(CLEAR);
}
clear_snapshot();
}
/*
* Check if frames "sn" and "fr" have the same layout, same following frames
* and same children.
*/
static int
check_snapshot_rec(sn, fr)
frame_T *sn;
frame_T *fr;
{
if (sn->fr_layout != fr->fr_layout
|| (sn->fr_next == NULL) != (fr->fr_next == NULL)
|| (sn->fr_child == NULL) != (fr->fr_child == NULL)
|| (sn->fr_next != NULL
&& check_snapshot_rec(sn->fr_next, fr->fr_next) == FAIL)
|| (sn->fr_child != NULL
&& check_snapshot_rec(sn->fr_child, fr->fr_child) == FAIL))
return FAIL;
return OK;
}
/*
* Copy the size of snapshot frame "sn" to frame "fr". Do the same for all
* following frames and children.
* Returns a pointer to the old current window, or NULL.
*/
static win_T *
restore_snapshot_rec(sn, fr)
frame_T *sn;
frame_T *fr;
{
win_T *wp = NULL;
win_T *wp2;
fr->fr_height = sn->fr_height;
# ifdef FEAT_VERTSPLIT
fr->fr_width = sn->fr_width;
# endif
if (fr->fr_layout == FR_LEAF)
{
frame_new_height(fr, fr->fr_height, FALSE, FALSE);
# ifdef FEAT_VERTSPLIT
frame_new_width(fr, fr->fr_width, FALSE);
# endif
wp = sn->fr_win;
}
if (sn->fr_next != NULL)
{
wp2 = restore_snapshot_rec(sn->fr_next, fr->fr_next);
if (wp2 != NULL)
wp = wp2;
}
if (sn->fr_child != NULL)
{
wp2 = restore_snapshot_rec(sn->fr_child, fr->fr_child);
if (wp2 != NULL)
wp = wp2;
}
return wp;
}
#endif
#if (defined(FEAT_GUI) && defined(FEAT_VERTSPLIT)) || defined(PROTO)
/*
* Return TRUE if there is any vertically split window.
*/
int
win_hasvertsplit()
{
frame_T *fr;
if (topframe->fr_layout == FR_ROW)
return TRUE;
if (topframe->fr_layout == FR_COL)
for (fr = topframe->fr_child; fr != NULL; fr = fr->fr_next)
if (fr->fr_layout == FR_ROW)
return TRUE;
return FALSE;
}
#endif
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