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vim/src/window.c
Bram Moolenaar 89015a6759 patch 8.2.2244: crash when making the window width negative 
Problem:    Crash when making the window width of the not-current window
            negative.
Solution:   Make sure the window width is not negative. (closes #7568)
2020-12-29 12:46:51 +01:00

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/* vi:set ts=8 sts=4 sw=4 noet:
*
* 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"
static void cmd_with_count(char *cmd, char_u *bufp, size_t bufsize, long Prenum);
static void win_init(win_T *newp, win_T *oldp, int flags);
static void win_init_some(win_T *newp, win_T *oldp);
static void frame_comp_pos(frame_T *topfrp, int *row, int *col);
static void frame_setheight(frame_T *curfrp, int height);
static void frame_setwidth(frame_T *curfrp, int width);
static void win_exchange(long);
static void win_rotate(int, int);
static void win_totop(int size, int flags);
static void win_equal_rec(win_T *next_curwin, int current, frame_T *topfr, int dir, int col, int row, int width, int height);
static win_T *win_free_mem(win_T *win, int *dirp, tabpage_T *tp);
static frame_T *win_altframe(win_T *win, tabpage_T *tp);
static tabpage_T *alt_tabpage(void);
static win_T *frame2win(frame_T *frp);
static int frame_has_win(frame_T *frp, win_T *wp);
static void frame_new_height(frame_T *topfrp, int height, int topfirst, int wfh);
static int frame_fixed_height(frame_T *frp);
static int frame_fixed_width(frame_T *frp);
static void frame_add_statusline(frame_T *frp);
static void frame_new_width(frame_T *topfrp, int width, int leftfirst, int wfw);
static void frame_add_vsep(frame_T *frp);
static int frame_minwidth(frame_T *topfrp, win_T *next_curwin);
static void frame_fix_width(win_T *wp);
static int win_alloc_firstwin(win_T *oldwin);
static void new_frame(win_T *wp);
static tabpage_T *alloc_tabpage(void);
static int leave_tabpage(buf_T *new_curbuf, int trigger_leave_autocmds);
static void enter_tabpage(tabpage_T *tp, buf_T *old_curbuf, int trigger_enter_autocmds, int trigger_leave_autocmds);
static void frame_fix_height(win_T *wp);
static int frame_minheight(frame_T *topfrp, win_T *next_curwin);
static int may_open_tabpage(void);
static void win_enter_ext(win_T *wp, int undo_sync, int no_curwin, int trigger_new_autocmds, int trigger_enter_autocmds, int trigger_leave_autocmds);
static void win_free(win_T *wp, tabpage_T *tp);
static int win_unlisted(win_T *wp);
static void win_append(win_T *after, win_T *wp);
static void frame_append(frame_T *after, frame_T *frp);
static void frame_insert(frame_T *before, frame_T *frp);
static void frame_remove(frame_T *frp);
static void win_goto_ver(int up, long count);
static void win_goto_hor(int left, long count);
static void frame_add_height(frame_T *frp, int n);
static void last_status_rec(frame_T *fr, int statusline);
static void make_snapshot_rec(frame_T *fr, frame_T **frp);
static void clear_snapshot(tabpage_T *tp, int idx);
static void clear_snapshot_rec(frame_T *fr);
static int check_snapshot_rec(frame_T *sn, frame_T *fr);
static win_T *restore_snapshot_rec(frame_T *sn, frame_T *fr);
static int frame_check_height(frame_T *topfrp, int height);
static int frame_check_width(frame_T *topfrp, int width);
static win_T *win_alloc(win_T *after, int hidden);
#define NOWIN (win_T *)-1 // non-existing window
#define ROWS_AVAIL (Rows - p_ch - tabline_height())
static char *m_onlyone = N_("Already only one window");
// When non-zero splitting a window is forbidden. Used to avoid that nasty
// autocommands mess up the window structure.
static int split_disallowed = 0;
// #define WIN_DEBUG
#ifdef WIN_DEBUG
/*
* Call this method to log the current window layout.
*/
static void
log_frame_layout(frame_T *frame)
{
ch_log(NULL, "layout %s, wi: %d, he: %d, wwi: %d, whe: %d, id: %d",
frame->fr_layout == FR_LEAF ? "LEAF"
: frame->fr_layout == FR_ROW ? "ROW" : "COL",
frame->fr_width,
frame->fr_height,
frame->fr_win == NULL ? -1 : frame->fr_win->w_width,
frame->fr_win == NULL ? -1 : frame->fr_win->w_height,
frame->fr_win == NULL ? -1 : frame->fr_win->w_id);
if (frame->fr_child != NULL)
{
ch_log(NULL, "children");
log_frame_layout(frame->fr_child);
if (frame->fr_next != NULL)
ch_log(NULL, "END of children");
}
if (frame->fr_next != NULL)
log_frame_layout(frame->fr_next);
}
#endif
/*
* All CTRL-W window commands are handled here, called from normal_cmd().
*/
void
do_window(
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;
linenr_T lnum = -1;
#endif
#ifdef FEAT_FIND_ID
int type = FIND_DEFINE;
int len;
#endif
char_u cbuf[40];
if (ERROR_IF_ANY_POPUP_WINDOW)
return;
#ifdef FEAT_CMDWIN
# define CHECK_CMDWIN \
do { \
if (cmdwin_type != 0) \
{ \
emsg(_(e_cmdwin)); \
return; \
} \
} while (0)
#else
# define CHECK_CMDWIN do { /**/ } while (0)
#endif
Prenum1 = Prenum == 0 ? 1 : Prenum;
switch (nchar)
{
// split current window in two parts, horizontally
case 'S':
case Ctrl_S:
case 's':
CHECK_CMDWIN;
reset_VIsual_and_resel(); // stop Visual mode
#ifdef FEAT_QUICKFIX
// When splitting the quickfix window open a new buffer in it,
// don't replicate the quickfix buffer.
if (bt_quickfix(curbuf))
goto newwindow;
#endif
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
(void)win_split((int)Prenum, 0);
break;
// split current window in two parts, vertically
case Ctrl_V:
case 'v':
CHECK_CMDWIN;
reset_VIsual_and_resel(); // stop Visual mode
#ifdef FEAT_QUICKFIX
// When splitting the quickfix window open a new buffer in it,
// don't replicate the quickfix buffer.
if (bt_quickfix(curbuf))
goto newwindow;
#endif
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
(void)win_split((int)Prenum, WSP_VERT);
break;
// split current window and edit alternate file
case Ctrl_HAT:
case '^':
CHECK_CMDWIN;
reset_VIsual_and_resel(); // stop Visual mode
if (buflist_findnr(Prenum == 0
? curwin->w_alt_fnum : Prenum) == NULL)
{
if (Prenum == 0)
emsg(_(e_noalt));
else
semsg(_("E92: Buffer %ld not found"), Prenum);
break;
}
if (!curbuf_locked() && win_split(0, 0) == OK)
(void)buflist_getfile(
Prenum == 0 ? curwin->w_alt_fnum : Prenum,
(linenr_T)0, GETF_ALT, FALSE);
break;
// open new window
case Ctrl_N:
case 'n':
CHECK_CMDWIN;
reset_VIsual_and_resel(); // stop Visual mode
#ifdef FEAT_QUICKFIX
newwindow:
#endif
if (Prenum)
// window height
vim_snprintf((char *)cbuf, sizeof(cbuf) - 5, "%ld", Prenum);
else
cbuf[0] = NUL;
#if defined(FEAT_QUICKFIX)
if (nchar == 'v' || nchar == Ctrl_V)
STRCAT(cbuf, "v");
#endif
STRCAT(cbuf, "new");
do_cmdline_cmd(cbuf);
break;
// quit current window
case Ctrl_Q:
case 'q':
reset_VIsual_and_resel(); // stop Visual mode
cmd_with_count("quit", cbuf, sizeof(cbuf), Prenum);
do_cmdline_cmd(cbuf);
break;
// close current window
case Ctrl_C:
case 'c':
reset_VIsual_and_resel(); // stop Visual mode
cmd_with_count("close", cbuf, sizeof(cbuf), Prenum);
do_cmdline_cmd(cbuf);
break;
#if defined(FEAT_QUICKFIX)
// close preview window
case Ctrl_Z:
case 'z':
CHECK_CMDWIN;
reset_VIsual_and_resel(); // stop Visual mode
do_cmdline_cmd((char_u *)"pclose");
break;
// cursor to preview window
case 'P':
FOR_ALL_WINDOWS(wp)
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;
reset_VIsual_and_resel(); // stop Visual mode
cmd_with_count("only", cbuf, sizeof(cbuf), Prenum);
do_cmdline_cmd(cbuf);
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 (ONE_WINDOW && 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;
win_goto_ver(FALSE, Prenum1);
break;
// cursor to window above
case 'k':
case K_UP:
case Ctrl_K:
CHECK_CMDWIN;
win_goto_ver(TRUE, Prenum1);
break;
// 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;
// move window to new tab page
case 'T':
CHECK_CMDWIN;
if (one_window())
msg(_(m_onlyone));
else
{
tabpage_T *oldtab = curtab;
tabpage_T *newtab;
// First create a new tab with the window, then go back to
// the old tab and close the window there.
wp = curwin;
if (win_new_tabpage((int)Prenum) == OK
&& valid_tabpage(oldtab))
{
newtab = curtab;
goto_tabpage_tp(oldtab, TRUE, TRUE);
if (curwin == wp)
win_close(curwin, FALSE);
if (valid_tabpage(newtab))
goto_tabpage_tp(newtab, TRUE, TRUE);
}
}
break;
// 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 (!win_valid(prevwin))
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;
reset_VIsual_and_resel(); // stop Visual mode
win_rotate(FALSE, (int)Prenum1); // downwards
break;
// rotate windows upwards
case 'R':
CHECK_CMDWIN;
reset_VIsual_and_resel(); // stop Visual mode
win_rotate(TRUE, (int)Prenum1); // upwards
break;
// move window to the very top/bottom/left/right
case 'K':
case 'J':
case 'H':
case 'L':
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;
// 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;
// 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;
#endif
// FALLTHROUGH
case ']':
case Ctrl_RSB:
CHECK_CMDWIN;
// keep Visual mode, can select words to use as a tag
if (Prenum)
postponed_split = Prenum;
else
postponed_split = -1;
#ifdef FEAT_QUICKFIX
if (nchar != '}')
g_do_tagpreview = 0;
#endif
// 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 'F':
case Ctrl_F:
wingotofile:
CHECK_CMDWIN;
ptr = grab_file_name(Prenum1, &lnum);
if (ptr != NULL)
{
tabpage_T *oldtab = curtab;
win_T *oldwin = curwin;
# ifdef FEAT_GUI
need_mouse_correct = TRUE;
# endif
setpcmark();
if (win_split(0, 0) == OK)
{
RESET_BINDING(curwin);
if (do_ecmd(0, ptr, NULL, NULL, ECMD_LASTL,
ECMD_HIDE, NULL) == FAIL)
{
// Failed to open the file, close the window
// opened for it.
win_close(curwin, FALSE);
goto_tabpage_win(oldtab, oldwin);
}
else if (nchar == 'F' && lnum >= 0)
{
curwin->w_cursor.lnum = lnum;
check_cursor_lnum();
beginline(BL_SOL | BL_FIX);
}
}
vim_free(ptr);
}
break;
#endif
#ifdef FEAT_FIND_ID
// Go to the first occurrence 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
// Quickfix window only: view the result under the cursor in a new split.
#if defined(FEAT_QUICKFIX)
case K_KENTER:
case CAR:
if (bt_quickfix(curbuf))
qf_view_result(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 = plain_vgetc();
LANGMAP_ADJUST(xchar, TRUE);
--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;
#endif
// FALLTHROUGH
case ']':
case Ctrl_RSB:
// keep Visual mode, can select words to use as a tag
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;
#ifdef FEAT_SEARCHPATH
case 'f': // CTRL-W gf: "gf" in a new tab page
case 'F': // CTRL-W gF: "gF" in a new tab page
cmdmod.cmod_tab = tabpage_index(curtab) + 1;
nchar = xchar;
goto wingotofile;
#endif
case 't': // CTRL-W gt: go to next tab page
goto_tabpage((int)Prenum);
break;
case 'T': // CTRL-W gT: go to previous tab page
goto_tabpage(-(int)Prenum1);
break;
case TAB: // CTRL-W g<Tab>: go to last used tab page
if (goto_tabpage_lastused() == FAIL)
beep_flush();
break;
default:
beep_flush();
break;
}
break;
default: beep_flush();
break;
}
}
/*
* Figure out the address type for ":wincmd".
*/
void
get_wincmd_addr_type(char_u *arg, exarg_T *eap)
{
switch (*arg)
{
case 'S':
case Ctrl_S:
case 's':
case Ctrl_N:
case 'n':
case 'j':
case Ctrl_J:
case 'k':
case Ctrl_K:
case 'T':
case Ctrl_R:
case 'r':
case 'R':
case 'K':
case 'J':
case '+':
case '-':
case Ctrl__:
case '_':
case '|':
case ']':
case Ctrl_RSB:
case 'g':
case Ctrl_G:
case Ctrl_V:
case 'v':
case 'h':
case Ctrl_H:
case 'l':
case Ctrl_L:
case 'H':
case 'L':
case '>':
case '<':
#if defined(FEAT_QUICKFIX)
case '}':
#endif
#ifdef FEAT_SEARCHPATH
case 'f':
case 'F':
case Ctrl_F:
#endif
#ifdef FEAT_FIND_ID
case 'i':
case Ctrl_I:
case 'd':
case Ctrl_D:
#endif
// window size or any count
eap->addr_type = ADDR_OTHER;
break;
case Ctrl_HAT:
case '^':
// buffer number
eap->addr_type = ADDR_BUFFERS;
break;
case Ctrl_Q:
case 'q':
case Ctrl_C:
case 'c':
case Ctrl_O:
case 'o':
case Ctrl_W:
case 'w':
case 'W':
case 'x':
case Ctrl_X:
// window number
eap->addr_type = ADDR_WINDOWS;
break;
#if defined(FEAT_QUICKFIX)
case Ctrl_Z:
case 'z':
case 'P':
#endif
case 't':
case Ctrl_T:
case 'b':
case Ctrl_B:
case 'p':
case Ctrl_P:
case '=':
case CAR:
// no count
eap->addr_type = ADDR_NONE;
break;
}
}
static void
cmd_with_count(
char *cmd,
char_u *bufp,
size_t bufsize,
long Prenum)
{
size_t len = STRLEN(cmd);
STRCPY(bufp, cmd);
if (Prenum > 0)
vim_snprintf((char *)bufp + len, bufsize - len, "%ld", Prenum);
}
/*
* If "split_disallowed" is set given an error and return FAIL.
* Otherwise return OK.
*/
static int
check_split_disallowed()
{
if (split_disallowed > 0)
{
emsg(_("E242: Can't split a window while closing another"));
return FAIL;
}
return OK;
}
/*
* 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(int size, int flags)
{
if (ERROR_IF_ANY_POPUP_WINDOW)
return FAIL;
// When the ":tab" modifier was used open a new tab page instead.
if (may_open_tabpage() == OK)
return OK;
// Add flags from ":vertical", ":topleft" and ":botright".
flags |= cmdmod.cmod_split;
if ((flags & WSP_TOP) && (flags & WSP_BOT))
{
emsg(_("E442: Can't split topleft and botright at the same time"));
return FAIL;
}
if (check_split_disallowed() == FAIL)
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(SNAP_HELP_IDX);
else
clear_snapshot(curtab, SNAP_HELP_IDX);
return win_split_ins(size, flags, NULL, 0);
}
/*
* When "new_wp" is NULL: split the current window in two.
* When "new_wp" is not NULL: insert this window at the far
* top/left/right/bottom.
* return FAIL for failure, OK otherwise
*/
int
win_split_ins(
int size,
int flags,
win_T *new_wp,
int dir)
{
win_T *wp = new_wp;
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, *frp2, *prevfrp;
int before;
int minheight;
int wmh1;
int did_set_fraction = FALSE;
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 (ONE_WINDOW && p_ls == 1 && oldwin->w_status_height == 0)
{
if (VISIBLE_HEIGHT(oldwin) <= p_wmh && new_wp == NULL)
{
emsg(_(e_noroom));
return FAIL;
}
need_status = STATUS_HEIGHT;
}
#ifdef FEAT_GUI
// May be needed for the scrollbars that are going to change.
if (gui.in_use)
out_flush();
#endif
if (flags & WSP_VERT)
{
int wmw1;
int minwidth;
layout = FR_ROW;
/*
* Check if we are able to split the current window and compute its
* width.
*/
// Current window requires at least 1 space.
wmw1 = (p_wmw == 0 ? 1 : p_wmw);
needed = wmw1 + 1;
if (flags & WSP_ROOM)
needed += p_wiw - wmw1;
if (flags & (WSP_BOT | WSP_TOP))
{
minwidth = frame_minwidth(topframe, NOWIN);
available = topframe->fr_width;
needed += minwidth;
}
else if (p_ea)
{
minwidth = frame_minwidth(oldwin->w_frame, NOWIN);
prevfrp = oldwin->w_frame;
for (frp = oldwin->w_frame->fr_parent; frp != NULL;
frp = frp->fr_parent)
{
if (frp->fr_layout == FR_ROW)
FOR_ALL_FRAMES(frp2, frp->fr_child)
if (frp2 != prevfrp)
minwidth += frame_minwidth(frp2, NOWIN);
prevfrp = frp;
}
available = topframe->fr_width;
needed += minwidth;
}
else
{
minwidth = frame_minwidth(oldwin->w_frame, NOWIN);
available = oldwin->w_frame->fr_width;
needed += minwidth;
}
if (available < needed && new_wp == NULL)
{
emsg(_(e_noroom));
return FAIL;
}
if (new_size == 0)
new_size = oldwin->w_width / 2;
if (new_size > available - minwidth - 1)
new_size = available - minwidth - 1;
if (new_size < wmw1)
new_size = wmw1;
// if it doesn't fit in the current window, need win_equal()
if (oldwin->w_width - new_size - 1 < p_wmw)
do_equal = TRUE;
// We don't like to take lines for the new window from a
// 'winfixwidth' window. Take them from a window to the left or right
// instead, if possible. Add one for the separator.
if (oldwin->w_p_wfw)
win_setwidth_win(oldwin->w_width + new_size + 1, oldwin);
// Only make all windows the same width if one of them (except oldwin)
// is wider than one of the split windows.
if (!do_equal && p_ea && size == 0 && *p_ead != 'v'
&& oldwin->w_frame->fr_parent != NULL)
{
frp = oldwin->w_frame->fr_parent->fr_child;
while (frp != NULL)
{
if (frp->fr_win != oldwin && frp->fr_win != NULL
&& (frp->fr_win->w_width > new_size
|| frp->fr_win->w_width > oldwin->w_width
- new_size - 1))
{
do_equal = TRUE;
break;
}
frp = frp->fr_next;
}
}
}
else
{
layout = FR_COL;
/*
* Check if we are able to split the current window and compute its
* height.
*/
// Current window requires at least 1 space.
wmh1 = (p_wmh == 0 ? 1 : p_wmh) + WINBAR_HEIGHT(curwin);
needed = wmh1 + STATUS_HEIGHT;
if (flags & WSP_ROOM)
needed += p_wh - wmh1;
if (flags & (WSP_BOT | WSP_TOP))
{
minheight = frame_minheight(topframe, NOWIN) + need_status;
available = topframe->fr_height;
needed += minheight;
}
else if (p_ea)
{
minheight = frame_minheight(oldwin->w_frame, NOWIN) + need_status;
prevfrp = oldwin->w_frame;
for (frp = oldwin->w_frame->fr_parent; frp != NULL;
frp = frp->fr_parent)
{
if (frp->fr_layout == FR_COL)
FOR_ALL_FRAMES(frp2, frp->fr_child)
if (frp2 != prevfrp)
minheight += frame_minheight(frp2, NOWIN);
prevfrp = frp;
}
available = topframe->fr_height;
needed += minheight;
}
else
{
minheight = frame_minheight(oldwin->w_frame, NOWIN) + need_status;
available = oldwin->w_frame->fr_height;
needed += minheight;
}
if (available < needed && new_wp == 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 > available - minheight - STATUS_HEIGHT)
new_size = available - minheight - STATUS_HEIGHT;
if (new_size < wmh1)
new_size = wmh1;
// 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)
{
// Set w_fraction now so that the cursor keeps the same relative
// vertical position using the old height.
set_fraction(oldwin);
did_set_fraction = TRUE;
win_setheight_win(oldwin->w_height + new_size + STATUS_HEIGHT,
oldwin);
oldwin_height = oldwin->w_height;
if (need_status)
oldwin_height -= STATUS_HEIGHT;
}
// Only make all windows the same height if one of them (except oldwin)
// is higher than one of the split windows.
if (!do_equal && p_ea && size == 0 && *p_ead != 'h'
&& oldwin->w_frame->fr_parent != NULL)
{
frp = oldwin->w_frame->fr_parent->fr_child;
while (frp != NULL)
{
if (frp->fr_win != oldwin && frp->fr_win != NULL
&& (frp->fr_win->w_height > new_size
|| frp->fr_win->w_height > oldwin_height - new_size
- STATUS_HEIGHT))
{
do_equal = TRUE;
break;
}
frp = frp->fr_next;
}
}
}
/*
* 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)
&& ( (flags & WSP_VERT) ? p_spr : p_sb))))
{
// new window below/right of current one
if (new_wp == NULL)
wp = win_alloc(oldwin, FALSE);
else
win_append(oldwin, wp);
}
else
{
if (new_wp == NULL)
wp = win_alloc(oldwin->w_prev, FALSE);
else
win_append(oldwin->w_prev, wp);
}
if (new_wp == NULL)
{
if (wp == NULL)
return FAIL;
new_frame(wp);
if (wp->w_frame == NULL)
{
win_free(wp, NULL);
return FAIL;
}
// make the contents of the new window the same as the current one
win_init(wp, curwin, flags);
}
/*
* Reorganise the tree of frames to insert the new window.
*/
if (flags & (WSP_TOP | WSP_BOT))
{
if ((topframe->fr_layout == FR_COL && (flags & WSP_VERT) == 0)
|| (topframe->fr_layout == FR_ROW && (flags & WSP_VERT) != 0))
{
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 if (flags & WSP_VERT)
before = !p_spr;
else
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 = ALLOC_CLEAR_ONE(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_ALL_FRAMES(frp, frp->fr_child)
frp->fr_parent = curfrp;
}
if (new_wp == NULL)
frp = wp->w_frame;
else
frp = new_wp->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);
// Set w_fraction now so that the cursor keeps the same relative
// vertical position.
if (!did_set_fraction)
set_fraction(oldwin);
wp->w_fraction = oldwin->w_fraction;
if (flags & WSP_VERT)
{
wp->w_p_scr = curwin->w_p_scr;
if (need_status)
{
win_new_height(oldwin, oldwin->w_height - 1);
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 = tabline_height();
win_new_height(wp, curfrp->fr_height - (p_ls > 0)
- WINBAR_HEIGHT(wp));
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;
win_new_height(wp, VISIBLE_HEIGHT(oldwin));
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
win_new_width(wp, 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,
FALSE);
}
else
win_new_width(oldwin, 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
{
// width and column of new window is same as current window
if (flags & (WSP_TOP | WSP_BOT))
{
wp->w_wincol = 0;
win_new_width(wp, Columns);
wp->w_vsep_width = 0;
}
else
{
wp->w_wincol = oldwin->w_wincol;
win_new_width(wp, oldwin->w_width);
wp->w_vsep_width = oldwin->w_vsep_width;
}
frp->fr_width = curfrp->fr_width;
// "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))
{
int new_fr_height = curfrp->fr_height - new_size
+ WINBAR_HEIGHT(wp) ;
if (!((flags & WSP_BOT) && p_ls == 0))
new_fr_height -= STATUS_HEIGHT;
frame_new_height(curfrp, new_fr_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 + VISIBLE_HEIGHT(oldwin)
+ STATUS_HEIGHT;
wp->w_status_height = oldwin->w_status_height;
if (!(flags & WSP_BOT))
oldwin->w_status_height = STATUS_HEIGHT;
}
if (flags & WSP_BOT)
frame_add_statusline(curfrp);
frame_fix_height(wp);
frame_fix_height(oldwin);
}
if (flags & (WSP_TOP | WSP_BOT))
(void)win_comp_pos();
// Both windows need redrawing. Update all status lines, in case they
// show something related to the window count or position.
redraw_win_later(wp, NOT_VALID);
redraw_win_later(oldwin, NOT_VALID);
status_redraw_all();
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
}
/*
* equalize the window sizes.
*/
if (do_equal || dir != 0)
win_equal(wp, TRUE,
(flags & WSP_VERT) ? (dir == 'v' ? 'b' : 'h')
: dir == 'h' ? 'b' : 'v');
// Don't change the window height/width to 'winheight' / 'winwidth' if a
// size was given.
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
{
i = p_wh;
if (size != 0)
p_wh = size;
}
#ifdef FEAT_JUMPLIST
// Keep same changelist position in new window.
wp->w_changelistidx = oldwin->w_changelistidx;
#endif
/*
* make the new window the current window
*/
win_enter_ext(wp, FALSE, FALSE, TRUE, TRUE, TRUE);
if (flags & WSP_VERT)
p_wiw = i;
else
p_wh = i;
return OK;
}
/*
* Initialize window "newp" from window "oldp".
* Used when splitting a window and when creating a new tab page.
* The windows will both edit the same buffer.
* WSP_NEWLOC may be specified in flags to prevent the location list from
* being copied.
*/
static void
win_init(win_T *newp, win_T *oldp, int flags UNUSED)
{
int i;
newp->w_buffer = oldp->w_buffer;
#ifdef FEAT_SYN_HL
newp->w_s = &(oldp->w_buffer->b_s);
#endif
oldp->w_buffer->b_nwindows++;
newp->w_cursor = oldp->w_cursor;
newp->w_valid = 0;
newp->w_curswant = oldp->w_curswant;
newp->w_set_curswant = oldp->w_set_curswant;
newp->w_topline = oldp->w_topline;
#ifdef FEAT_DIFF
newp->w_topfill = oldp->w_topfill;
#endif
newp->w_leftcol = oldp->w_leftcol;
newp->w_pcmark = oldp->w_pcmark;
newp->w_prev_pcmark = oldp->w_prev_pcmark;
newp->w_alt_fnum = oldp->w_alt_fnum;
newp->w_wrow = oldp->w_wrow;
newp->w_fraction = oldp->w_fraction;
newp->w_prev_fraction_row = oldp->w_prev_fraction_row;
#ifdef FEAT_JUMPLIST
copy_jumplist(oldp, newp);
#endif
#ifdef FEAT_QUICKFIX
if (flags & WSP_NEWLOC)
{
// Don't copy the location list.
newp->w_llist = NULL;
newp->w_llist_ref = NULL;
}
else
copy_loclist_stack(oldp, newp);
#endif
newp->w_localdir = (oldp->w_localdir == NULL)
? NULL : vim_strsave(oldp->w_localdir);
newp->w_prevdir = (oldp->w_prevdir == NULL)
? NULL : vim_strsave(oldp->w_prevdir);
// copy tagstack and folds
for (i = 0; i < oldp->w_tagstacklen; i++)
{
taggy_T *tag = &newp->w_tagstack[i];
*tag = oldp->w_tagstack[i];
if (tag->tagname != NULL)
tag->tagname = vim_strsave(tag->tagname);
if (tag->user_data != NULL)
tag->user_data = vim_strsave(tag->user_data);
}
newp->w_tagstackidx = oldp->w_tagstackidx;
newp->w_tagstacklen = oldp->w_tagstacklen;
#ifdef FEAT_FOLDING
copyFoldingState(oldp, newp);
#endif
win_init_some(newp, oldp);
#ifdef FEAT_SYN_HL
check_colorcolumn(newp);
#endif
}
/*
* Initialize window "newp" from window "old".
* Only the essential things are copied.
*/
static void
win_init_some(win_T *newp, win_T *oldp)
{
// Use the same argument list.
newp->w_alist = oldp->w_alist;
++newp->w_alist->al_refcount;
newp->w_arg_idx = oldp->w_arg_idx;
// copy options from existing window
win_copy_options(oldp, newp);
}
/*
* Return TRUE if "win" is a global popup or a popup in the current tab page.
*/
int
win_valid_popup(win_T *win UNUSED)
{
#ifdef FEAT_PROP_POPUP
win_T *wp;
FOR_ALL_POPUPWINS(wp)
if (wp == win)
return TRUE;
FOR_ALL_POPUPWINS_IN_TAB(curtab, wp)
if (wp == win)
return TRUE;
#endif
return FALSE;
}
/*
* Check if "win" is a pointer to an existing window in the current tab page.
*/
int
win_valid(win_T *win)
{
win_T *wp;
if (win == NULL)
return FALSE;
FOR_ALL_WINDOWS(wp)
if (wp == win)
return TRUE;
return win_valid_popup(win);
}
/*
* Find window "id" in the current tab page.
* Also find popup windows.
* Return NULL if not found.
*/
win_T *
win_find_by_id(int id)
{
win_T *wp;
FOR_ALL_WINDOWS(wp)
if (wp->w_id == id)
return wp;
#ifdef FEAT_PROP_POPUP
FOR_ALL_POPUPWINS(wp)
if (wp->w_id == id)
return wp;
FOR_ALL_POPUPWINS_IN_TAB(curtab, wp)
if (wp->w_id == id)
return wp;
#endif
return NULL;
}
/*
* Check if "win" is a pointer to an existing window in any tab page.
*/
int
win_valid_any_tab(win_T *win)
{
win_T *wp;
tabpage_T *tp;
if (win == NULL)
return FALSE;
FOR_ALL_TABPAGES(tp)
{
FOR_ALL_WINDOWS_IN_TAB(tp, wp)
{
if (wp == win)
return TRUE;
}
#ifdef FEAT_PROP_POPUP
FOR_ALL_POPUPWINS_IN_TAB(tp, wp)
if (wp == win)
return TRUE;
#endif
}
return win_valid_popup(win);
}
/*
* Return the number of windows.
*/
int
win_count(void)
{
win_T *wp;
int count = 0;
FOR_ALL_WINDOWS(wp)
++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).
*/
int
make_windows(
int count,
int vertical UNUSED) // split windows vertically if TRUE
{
int maxcount;
int todo;
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
{
// Each window needs at least 'winminheight' lines and a status line.
maxcount = (VISIBLE_HEIGHT(curwin) + 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);
/*
* Don't execute autocommands while creating the windows. Must do that
* when putting the buffers in the windows.
*/
block_autocmds();
// todo is number of windows left to create
for (todo = count - 1; todo > 0; --todo)
if (vertical)
{
if (win_split(curwin->w_width - (curwin->w_width - todo)
/ (todo + 1) - 1, WSP_VERT | WSP_ABOVE) == FAIL)
break;
}
else
{
if (win_split(curwin->w_height - (curwin->w_height - todo
* STATUS_HEIGHT) / (todo + 1)
- STATUS_HEIGHT, WSP_ABOVE) == FAIL)
break;
}
unblock_autocmds();
// return actual number of windows
return (count - todo);
}
/*
* Exchange current and next window
*/
static void
win_exchange(long Prenum)
{
frame_T *frp;
frame_T *frp2;
win_T *wp;
win_T *wp2;
int temp;
if (ERROR_IF_ANY_POPUP_WINDOW)
return;
if (ONE_WINDOW) // 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, NULL);
frame_remove(curwin->w_frame);
win_append(wp->w_prev, curwin);
frame_insert(frp, curwin->w_frame);
}
if (wp != wp2)
{
win_remove(wp, NULL);
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;
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);
}
(void)win_comp_pos(); // recompute window positions
win_enter(wp, TRUE);
redraw_all_later(NOT_VALID);
}
/*
* 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(int upwards, int count)
{
win_T *wp1;
win_T *wp2;
frame_T *frp;
int n;
if (ONE_WINDOW) // nothing to do
{
beep_flush();
return;
}
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
// Check if all frames in this row/col have one window.
FOR_ALL_FRAMES(frp, curwin->w_frame->fr_parent->fr_child)
if (frp->fr_win == NULL)
{
emsg(_("E443: Cannot rotate when another window is split"));
return;
}
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, NULL);
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, NULL);
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);
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);
// recompute w_winrow and w_wincol for all windows
(void)win_comp_pos();
}
redraw_all_later(NOT_VALID);
}
/*
* Move the current window to the very top/bottom/left/right of the screen.
*/
static void
win_totop(int size, int flags)
{
int dir;
int height = curwin->w_height;
if (ONE_WINDOW)
{
beep_flush();
return;
}
if (check_split_disallowed() == FAIL)
return;
// Remove the window and frame from the tree of frames.
(void)winframe_remove(curwin, &dir, NULL);
win_remove(curwin, NULL);
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)
// When 'guioptions' includes 'L' or 'R' may have to remove or add
// scrollbars. Have to update them anyway.
gui_may_update_scrollbars();
#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(win_T *win1, win_T *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)
{
if (win1->w_frame->fr_parent != win2->w_frame->fr_parent)
{
iemsg("INTERNAL: trying to move a window into another frame");
return;
}
// may need to 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;
if (win1->w_prev->w_vsep_width == 1)
{
// Remove the vertical separator from the last-but-one window,
// add it to the last window. Adjust the frame widths.
win1->w_prev->w_vsep_width = 0;
win1->w_prev->w_frame->fr_width -= 1;
win1->w_vsep_width = 1;
win1->w_frame->fr_width += 1;
}
}
else if (win2 == lastwin)
{
height = win1->w_status_height;
win1->w_status_height = win2->w_status_height;
win2->w_status_height = height;
if (win1->w_vsep_width == 1)
{
// Remove the vertical separator from win1, add it to the last
// window, win2. Adjust the frame widths.
win2->w_vsep_width = 1;
win2->w_frame->fr_width += 1;
win1->w_vsep_width = 0;
win1->w_frame->fr_width -= 1;
}
}
win_remove(win1, NULL);
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(
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)
dir = *p_ead;
win_equal_rec(next_curwin == NULL ? curwin : next_curwin, current,
topframe, dir, 0, tabline_height(),
(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(
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
|| topfr->fr_width != width || topfr->fr_win->w_wincol != col
)
{
topfr->fr_win->w_winrow = row;
frame_new_height(topfr, height, FALSE, FALSE);
topfr->fr_win->w_wincol = col;
frame_new_width(topfr, width, FALSE, FALSE);
redraw_all_later(NOT_VALID);
}
}
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);
has_next_curwin = frame_has_win(topfr, next_curwin);
/*
* Compute width for "next_curwin" window and room available for
* other windows.
* "m" is the minimal width when counting p_wiw for "next_curwin".
*/
m = frame_minwidth(topfr, next_curwin);
room = width - m;
if (room < 0)
{
next_curwin_size = p_wiw + room;
room = 0;
}
else
{
next_curwin_size = -1;
FOR_ALL_FRAMES(fr, topfr->fr_child)
{
// If 'winfixwidth' set keep the window width if
// possible.
// Watch out for this window being the next_curwin.
if (frame_fixed_width(fr))
{
n = frame_minwidth(fr, NOWIN);
new_size = fr->fr_width;
if (frame_has_win(fr, next_curwin))
{
room += p_wiw - p_wmw;
next_curwin_size = 0;
if (new_size < p_wiw)
new_size = p_wiw;
}
else
// These windows don't use up room.
totwincount -= (n + (fr->fr_next == NULL
? extra_sep : 0)) / (p_wmw + 1);
room -= new_size - n;
if (room < 0)
{
new_size += room;
room = 0;
}
fr->fr_newwidth = 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_wiw)
{
// Can make all windows wider than 'winwidth', spread
// the room equally.
next_curwin_size = (room + p_wiw
+ (totwincount - 1) * p_wmw
+ (totwincount - 1)) / totwincount;
room -= next_curwin_size - p_wiw;
}
else
next_curwin_size = p_wiw;
}
}
if (has_next_curwin)
--totwincount; // don't count curwin
}
FOR_ALL_FRAMES(fr, topfr->fr_child)
{
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 if (frame_fixed_width(fr))
{
new_size = fr->fr_newwidth;
wincount = 0; // doesn't count as a sizeable window
}
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 (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_wiw - (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 != '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, height);
col += new_size;
width -= new_size;
totwincount -= wincount;
}
}
else // topfr->fr_layout == FR_COL
{
topfr->fr_width = width;
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_ALL_FRAMES(fr, topfr->fr_child)
{
// 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)
{
// can make all windows higher than 'winheight',
// spread the room equally.
next_curwin_size = (room + p_wh
+ (totwincount - 1) * 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_ALL_FRAMES(fr, topfr->fr_child)
{
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;
}
}
}
#ifdef FEAT_JOB_CHANNEL
static void
leaving_window(win_T *win)
{
// Only matters for a prompt window.
if (!bt_prompt(win->w_buffer))
return;
// When leaving a prompt window stop Insert mode and perhaps restart
// it when entering that window again.
win->w_buffer->b_prompt_insert = restart_edit;
if (restart_edit != 0 && mode_displayed)
clear_cmdline = TRUE; // unshow mode later
restart_edit = NUL;
// When leaving the window (or closing the window) was done from a
// callback we need to break out of the Insert mode loop and restart Insert
// mode when entering the window again.
if (State & INSERT)
{
stop_insert_mode = TRUE;
if (win->w_buffer->b_prompt_insert == NUL)
win->w_buffer->b_prompt_insert = 'A';
}
}
void
entering_window(win_T *win)
{
// Only matters for a prompt window.
if (!bt_prompt(win->w_buffer))
return;
// When switching to a prompt buffer that was in Insert mode, don't stop
// Insert mode, it may have been set in leaving_window().
if (win->w_buffer->b_prompt_insert != NUL)
stop_insert_mode = FALSE;
// When entering the prompt window restart Insert mode if we were in Insert
// mode when we left it.
restart_edit = win->w_buffer->b_prompt_insert;
}
#endif
/*
* Close all windows for buffer "buf".
*/
void
close_windows(
buf_T *buf,
int keep_curwin) // don't close "curwin"
{
win_T *wp;
tabpage_T *tp, *nexttp;
int h = tabline_height();
int count = tabpage_index(NULL);
++RedrawingDisabled;
for (wp = firstwin; wp != NULL && !ONE_WINDOW; )
{
if (wp->w_buffer == buf && (!keep_curwin || wp != curwin)
&& !(wp->w_closing || wp->w_buffer->b_locked > 0))
{
if (win_close(wp, FALSE) == FAIL)
// If closing the window fails give up, to avoid looping
// forever.
break;
// Start all over, autocommands may change the window layout.
wp = firstwin;
}
else
wp = wp->w_next;
}
// Also check windows in other tab pages.
for (tp = first_tabpage; tp != NULL; tp = nexttp)
{
nexttp = tp->tp_next;
if (tp != curtab)
FOR_ALL_WINDOWS_IN_TAB(tp, wp)
if (wp->w_buffer == buf
&& !(wp->w_closing || wp->w_buffer->b_locked > 0))
{
win_close_othertab(wp, FALSE, tp);
// Start all over, the tab page may be closed and
// autocommands may change the window layout.
nexttp = first_tabpage;
break;
}
}
--RedrawingDisabled;
if (count != tabpage_index(NULL))
apply_autocmds(EVENT_TABCLOSED, NULL, NULL, FALSE, curbuf);
redraw_tabline = TRUE;
if (h != tabline_height())
shell_new_rows();
}
/*
* Return TRUE if the current window is the only window that exists (ignoring
* "aucmd_win").
* Returns FALSE if there is a window, possibly in another tab page.
*/
static int
last_window(void)
{
return (one_window() && first_tabpage->tp_next == NULL);
}
/*
* Return TRUE if there is only one window other than "aucmd_win" in the
* current tab page.
*/
int
one_window(void)
{
win_T *wp;
int seen_one = FALSE;
FOR_ALL_WINDOWS(wp)
{
if (wp != aucmd_win)
{
if (seen_one)
return FALSE;
seen_one = TRUE;
}
}
return TRUE;
}
/*
* Close the possibly last window in a tab page.
* Returns TRUE when the window was closed already.
*/
static int
close_last_window_tabpage(
win_T *win,
int free_buf,
tabpage_T *prev_curtab)
{
if (ONE_WINDOW)
{
buf_T *old_curbuf = curbuf;
/*
* Closing the last window in a tab page. First go to another tab
* page and then close the window and the tab page. This avoids that
* curwin and curtab are invalid while we are freeing memory, they may
* be used in GUI events.
* Don't trigger autocommands yet, they may use wrong values, so do
* that below.
*/
goto_tabpage_tp(alt_tabpage(), FALSE, TRUE);
redraw_tabline = TRUE;
// Safety check: Autocommands may have closed the window when jumping
// to the other tab page.
if (valid_tabpage(prev_curtab) && prev_curtab->tp_firstwin == win)
{
int h = tabline_height();
win_close_othertab(win, free_buf, prev_curtab);
if (h != tabline_height())
shell_new_rows();
}
#ifdef FEAT_JOB_CHANNEL
entering_window(curwin);
#endif
// Since goto_tabpage_tp above did not trigger *Enter autocommands, do
// that now.
apply_autocmds(EVENT_TABCLOSED, NULL, NULL, FALSE, curbuf);
apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
if (old_curbuf != curbuf)
apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
return TRUE;
}
return FALSE;
}
/*
* Close the buffer of "win" and unload it if "action" is DOBUF_UNLOAD.
* "action" can also be zero (do nothing) or DOBUF_WIPE.
* "abort_if_last" is passed to close_buffer(): abort closing if all other
* windows are closed.
*/
static void
win_close_buffer(win_T *win, int action, int abort_if_last)
{
#ifdef FEAT_SYN_HL
// Free independent synblock before the buffer is freed.
if (win->w_buffer != NULL)
reset_synblock(win);
#endif
#ifdef FEAT_QUICKFIX
// When the quickfix/location list window is closed, unlist the buffer.
if (win->w_buffer != NULL && bt_quickfix(win->w_buffer))
win->w_buffer->b_p_bl = FALSE;
#endif
// Close the link to the buffer.
if (win->w_buffer != NULL)
{
bufref_T bufref;
set_bufref(&bufref, curbuf);
win->w_closing = TRUE;
close_buffer(win, win->w_buffer, action, abort_if_last, FALSE);
if (win_valid_any_tab(win))
win->w_closing = FALSE;
// Make sure curbuf is valid. It can become invalid if 'bufhidden' is
// "wipe".
if (!bufref_valid(&bufref))
curbuf = firstbuf;
}
}
/*
* Close window "win". Only works for the current tab page.
* If "free_buf" is TRUE related buffer may be unloaded.
*
* Called by :quit, :close, :xit, :wq and findtag().
* Returns FAIL when the window was not closed.
*/
int
win_close(win_T *win, int free_buf)
{
win_T *wp;
int other_buffer = FALSE;
int close_curwin = FALSE;
int dir;
int help_window = FALSE;
tabpage_T *prev_curtab = curtab;
frame_T *win_frame = win->w_frame->fr_parent;
#ifdef FEAT_DIFF
int had_diffmode = win->w_p_diff;
#endif
#if defined(FEAT_TERMINAL) && defined(FEAT_PROP_POPUP)
// Can close a popup window with a terminal if the job has finished.
if (may_close_term_popup() == OK)
return OK;
#endif
if (ERROR_IF_ANY_POPUP_WINDOW)
return FAIL;
if (last_window())
{
emsg(_("E444: Cannot close last window"));
return FAIL;
}
if (win->w_closing || (win->w_buffer != NULL
&& win->w_buffer->b_locked > 0))
return FAIL; // window is already being closed
if (win_unlisted(win))
{
emsg(_(e_autocmd_close));
return FAIL;
}
if ((firstwin == aucmd_win || lastwin == aucmd_win) && one_window())
{
emsg(_("E814: Cannot close window, only autocmd window would remain"));
return FAIL;
}
// When closing the last window in a tab page first go to another tab page
// and then close the window and the tab page to avoid that curwin and
// curtab are invalid while we are freeing memory.
if (close_last_window_tabpage(win, free_buf, prev_curtab))
return FAIL;
// When closing the help window, try restoring a snapshot after closing
// the window. Otherwise clear the snapshot, it's now invalid.
if (bt_help(win->w_buffer))
help_window = TRUE;
else
clear_snapshot(curtab, SNAP_HELP_IDX);
if (win == curwin)
{
#ifdef FEAT_JOB_CHANNEL
leaving_window(curwin);
#endif
/*
* Guess which window is going to be the new current window.
* This may change because of the autocommands (sigh).
*/
wp = frame2win(win_altframe(win, NULL));
/*
* Be careful: If autocommands delete the window or cause this window
* to be the last one left, return now.
*/
if (wp->w_buffer != curbuf)
{
other_buffer = TRUE;
win->w_closing = TRUE;
apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
if (!win_valid(win))
return FAIL;
win->w_closing = FALSE;
if (last_window())
return FAIL;
}
win->w_closing = TRUE;
apply_autocmds(EVENT_WINLEAVE, NULL, NULL, FALSE, curbuf);
if (!win_valid(win))
return FAIL;
win->w_closing = FALSE;
if (last_window())
return FAIL;
#ifdef FEAT_EVAL
// autocmds may abort script processing
if (aborting())
return FAIL;
#endif
}
#ifdef FEAT_GUI
// Avoid trouble with scrollbars that are going to be deleted in
// win_free().
if (gui.in_use)
out_flush();
#endif
#ifdef FEAT_PROP_POPUP
if (popup_win_closed(win) && !win_valid(win))
return FAIL;
#endif
win_close_buffer(win, free_buf ? DOBUF_UNLOAD : 0, TRUE);
if (only_one_window() && win_valid(win) && win->w_buffer == NULL
&& (last_window() || curtab != prev_curtab
|| close_last_window_tabpage(win, free_buf, prev_curtab)))
{
// Autocommands have closed all windows, quit now. Restore
// curwin->w_buffer, otherwise writing viminfo may fail.
if (curwin->w_buffer == NULL)
curwin->w_buffer = curbuf;
getout(0);
}
// Autocommands may have moved to another tab page.
if (curtab != prev_curtab && win_valid_any_tab(win)
&& win->w_buffer == NULL)
{
// Need to close the window anyway, since the buffer is NULL.
win_close_othertab(win, FALSE, prev_curtab);
return FAIL;
}
// Autocommands may have closed the window already or closed the only
// other window.
if (!win_valid(win) || last_window()
|| close_last_window_tabpage(win, free_buf, prev_curtab))
return FAIL;
// Now we are really going to close the window. Disallow any autocommand
// to split a window to avoid trouble.
// Also bail out of parse_queued_messages() to avoid it tries to update the
// screen.
++split_disallowed;
#ifdef MESSAGE_QUEUE
++dont_parse_messages;
#endif
// Free the memory used for the window and get the window that received
// the screen space.
wp = win_free_mem(win, &dir, NULL);
// 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))
{
/*
* If 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;
// The cursor position may be invalid if the buffer changed after last
// using the window.
check_cursor();
}
if (p_ea && (*p_ead == 'b' || *p_ead == dir))
// If the frame of the closed window contains the new current window,
// only resize that frame. Otherwise resize all windows.
win_equal(curwin, curwin->w_frame->fr_parent == win_frame, dir);
else
win_comp_pos();
if (close_curwin)
{
win_enter_ext(wp, FALSE, TRUE, FALSE, TRUE, TRUE);
if (other_buffer)
// careful: after this wp and win may be invalid!
apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
}
--split_disallowed;
#ifdef MESSAGE_QUEUE
--dont_parse_messages;
#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(SNAP_HELP_IDX, close_curwin);
#ifdef FEAT_DIFF
// If the window had 'diff' set and now there is only one window left in
// the tab page with 'diff' set, and "closeoff" is in 'diffopt', then
// execute ":diffoff!".
if (diffopt_closeoff() && had_diffmode && curtab == prev_curtab)
{
int diffcount = 0;
win_T *dwin;
FOR_ALL_WINDOWS(dwin)
if (dwin->w_p_diff)
++diffcount;
if (diffcount == 1)
do_cmdline_cmd((char_u *)"diffoff!");
}
#endif
#if defined(FEAT_GUI)
// 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);
return OK;
}
/*
* Close window "win" in tab page "tp", which is not the current tab page.
* This may be the last window in that tab page and result in closing the tab,
* thus "tp" may become invalid!
* Caller must check if buffer is hidden and whether the tabline needs to be
* updated.
*/
void
win_close_othertab(win_T *win, int free_buf, tabpage_T *tp)
{
win_T *wp;
int dir;
tabpage_T *ptp = NULL;
int free_tp = FALSE;
// Get here with win->w_buffer == NULL when win_close() detects the tab
// page changed.
if (win->w_closing || (win->w_buffer != NULL
&& win->w_buffer->b_locked > 0))
return; // window is already being closed
if (win->w_buffer != NULL)
// Close the link to the buffer.
close_buffer(win, win->w_buffer, free_buf ? DOBUF_UNLOAD : 0,
FALSE, FALSE);
// Careful: Autocommands may have closed the tab page or made it the
// current tab page.
for (ptp = first_tabpage; ptp != NULL && ptp != tp; ptp = ptp->tp_next)
;
if (ptp == NULL || tp == curtab)
return;
// Autocommands may have closed the window already.
for (wp = tp->tp_firstwin; wp != NULL && wp != win; wp = wp->w_next)
;
if (wp == NULL)
return;
// When closing the last window in a tab page remove the tab page.
if (tp->tp_firstwin == tp->tp_lastwin)
{
if (tp == first_tabpage)
first_tabpage = tp->tp_next;
else
{
for (ptp = first_tabpage; ptp != NULL && ptp->tp_next != tp;
ptp = ptp->tp_next)
;
if (ptp == NULL)
{
internal_error("win_close_othertab()");
return;
}
ptp->tp_next = tp->tp_next;
}
free_tp = TRUE;
}
// Free the memory used for the window.
win_free_mem(win, &dir, tp);
if (free_tp)
free_tabpage(tp);
}
/*
* Free the memory used for a window.
* Returns a pointer to the window that got the freed up space.
*/
static win_T *
win_free_mem(
win_T *win,
int *dirp, // set to 'v' or 'h' for direction if 'ea'
tabpage_T *tp) // tab page "win" is in, NULL for current
{
frame_T *frp;
win_T *wp;
tabpage_T *win_tp = tp == NULL ? curtab : tp;
// Remove the window and its frame from the tree of frames.
frp = win->w_frame;
wp = winframe_remove(win, dirp, tp);
vim_free(frp);
win_free(win, tp);
// When deleting the current window in the tab, select a new current
// window.
if (win == win_tp->tp_curwin)
win_tp->tp_curwin = wp;
return wp;
}
#if defined(EXITFREE) || defined(PROTO)
void
win_free_all(void)
{
int dummy;
while (first_tabpage->tp_next != NULL)
tabpage_close(TRUE);
if (aucmd_win != NULL)
{
(void)win_free_mem(aucmd_win, &dummy, NULL);
aucmd_win = NULL;
}
while (firstwin != NULL)
(void)win_free_mem(firstwin, &dummy, NULL);
// No window should be used after this. Set curwin to NULL to crash
// instead of using freed memory.
curwin = NULL;
}
#endif
/*
* Remove a window and its frame from the tree of frames.
* Returns a pointer to the window that got the freed up space.
*/
win_T *
winframe_remove(
win_T *win,
int *dirp UNUSED, // set to 'v' or 'h' for direction if 'ea'
tabpage_T *tp) // tab page "win" is in, NULL for current
{
frame_T *frp, *frp2, *frp3;
frame_T *frp_close = win->w_frame;
win_T *wp;
/*
* If there is only one window there is nothing to remove.
*/
if (tp == NULL ? ONE_WINDOW : tp->tp_firstwin == tp->tp_lastwin)
return NULL;
/*
* Remove the window from its frame.
*/
frp2 = win_altframe(win, tp);
wp = frame2win(frp2);
// Remove this frame from the list of frames.
frame_remove(frp_close);
if (frp_close->fr_parent->fr_layout == FR_COL)
{
// When 'winfixheight' is set, try to find another frame in the column
// (as close to the closed frame as possible) to distribute the height
// to.
if (frp2->fr_win != NULL && frp2->fr_win->w_p_wfh)
{
frp = frp_close->fr_prev;
frp3 = frp_close->fr_next;
while (frp != NULL || frp3 != NULL)
{
if (frp != NULL)
{
if (!frame_fixed_height(frp))
{
frp2 = frp;
wp = frame2win(frp2);
break;
}
frp = frp->fr_prev;
}
if (frp3 != NULL)
{
if (frp3->fr_win != NULL && !frp3->fr_win->w_p_wfh)
{
frp2 = frp3;
wp = frp3->fr_win;
break;
}
frp3 = frp3->fr_next;
}
}
}
frame_new_height(frp2, frp2->fr_height + frp_close->fr_height,
frp2 == frp_close->fr_next ? TRUE : FALSE, FALSE);
*dirp = 'v';
}
else
{
// When 'winfixwidth' is set, try to find another frame in the column
// (as close to the closed frame as possible) to distribute the width
// to.
if (frp2->fr_win != NULL && frp2->fr_win->w_p_wfw)
{
frp = frp_close->fr_prev;
frp3 = frp_close->fr_next;
while (frp != NULL || frp3 != NULL)
{
if (frp != NULL)
{
if (!frame_fixed_width(frp))
{
frp2 = frp;
wp = frame2win(frp2);
break;
}
frp = frp->fr_prev;
}
if (frp3 != NULL)
{
if (frp3->fr_win != NULL && !frp3->fr_win->w_p_wfw)
{
frp2 = frp3;
wp = frp3->fr_win;
break;
}
frp3 = frp3->fr_next;
}
}
}
frame_new_width(frp2, frp2->fr_width + frp_close->fr_width,
frp2 == frp_close->fr_next ? TRUE : FALSE, FALSE);
*dirp = 'h';
}
// 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 = win->w_wincol;
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_ALL_FRAMES(frp, frp2->fr_child)
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;
if (topframe->fr_child == frp2)
topframe->fr_child = frp;
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;
}
}
if (topframe->fr_child == frp)
topframe->fr_child = frp2;
vim_free(frp);
}
}
return wp;
}
/*
* Return a pointer to the frame that will receive the empty screen space that
* is left over after "win" is closed.
*
* If 'splitbelow' or 'splitright' is set, the space goes above or to the left
* by default. Otherwise, the free space goes below or to the right. The
* result is that opening a window and then immediately closing it will
* preserve the initial window layout. The 'wfh' and 'wfw' settings are
* respected when possible.
*/
static frame_T *
win_altframe(
win_T *win,
tabpage_T *tp) // tab page "win" is in, NULL for current
{
frame_T *frp;
frame_T *other_fr, *target_fr;
if (tp == NULL ? ONE_WINDOW : tp->tp_firstwin == tp->tp_lastwin)
return alt_tabpage()->tp_curwin->w_frame;
frp = win->w_frame;
if (frp->fr_prev == NULL)
return frp->fr_next;
if (frp->fr_next == NULL)
return frp->fr_prev;
// By default the next window will get the space that was abandoned by this
// window
target_fr = frp->fr_next;
other_fr = frp->fr_prev;
// If this is part of a column of windows and 'splitbelow' is true then the
// previous window will get the space.
if (frp->fr_parent != NULL && frp->fr_parent->fr_layout == FR_COL && p_sb)
{
target_fr = frp->fr_prev;
other_fr = frp->fr_next;
}
// If this is part of a row of windows, and 'splitright' is true then the
// previous window will get the space.
if (frp->fr_parent != NULL && frp->fr_parent->fr_layout == FR_ROW && p_spr)
{
target_fr = frp->fr_prev;
other_fr = frp->fr_next;
}
// If 'wfh' or 'wfw' is set for the target and not for the alternate
// window, reverse the selection.
if (frp->fr_parent != NULL && frp->fr_parent->fr_layout == FR_ROW)
{
if (frame_fixed_width(target_fr) && !frame_fixed_width(other_fr))
target_fr = other_fr;
}
else
{
if (frame_fixed_height(target_fr) && !frame_fixed_height(other_fr))
target_fr = other_fr;
}
return target_fr;
}
/*
* Return the tabpage that will be used if the current one is closed.
*/
static tabpage_T *
alt_tabpage(void)
{
tabpage_T *tp;
// Use the next tab page if possible.
if (curtab->tp_next != NULL)
return curtab->tp_next;
// Find the last but one tab page.
for (tp = first_tabpage; tp->tp_next != curtab; tp = tp->tp_next)
;
return tp;
}
/*
* Find the left-upper window in frame "frp".
*/
static win_T *
frame2win(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(frame_T *frp, win_T *wp)
{
frame_T *p;
if (frp->fr_layout == FR_LEAF)
return frp->fr_win == wp;
FOR_ALL_FRAMES(p, frp->fr_child)
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(
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
- WINBAR_HEIGHT(topfrp->fr_win));
}
else if (topfrp->fr_layout == FR_ROW)
{
do
{
// All frames in this row get the same new height.
FOR_ALL_FRAMES(frp, topfrp->fr_child)
{
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);
}
else // fr_layout == FR_COL
{
// 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(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_ALL_FRAMES(frp, frp->fr_child)
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_ALL_FRAMES(frp, frp->fr_child)
if (!frame_fixed_height(frp))
return FALSE;
return TRUE;
}
/*
* Return TRUE if width of frame "frp" should not be changed because of
* the 'winfixwidth' option.
*/
static int
frame_fixed_width(frame_T *frp)
{
// frame with one window: fixed width if 'winfixwidth' set.
if (frp->fr_win != NULL)
return frp->fr_win->w_p_wfw;
if (frp->fr_layout == FR_COL)
{
// The frame is fixed width if one of the frames in the row is fixed
// width.
FOR_ALL_FRAMES(frp, frp->fr_child)
if (frame_fixed_width(frp))
return TRUE;
return FALSE;
}
// frp->fr_layout == FR_ROW: The frame is fixed width if all of the
// frames in the row are fixed width.
FOR_ALL_FRAMES(frp, frp->fr_child)
if (!frame_fixed_width(frp))
return FALSE;
return TRUE;
}
/*
* Add a status line to windows at the bottom of "frp".
* Note: Does not check if there is room!
*/
static void
frame_add_statusline(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_ALL_FRAMES(frp, frp->fr_child)
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(
frame_T *topfrp,
int width,
int leftfirst, // resize leftmost contained frame first
int wfw) // obey 'winfixwidth' when there is a choice;
// may cause the width not to be set
{
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)
{
do
{
// All frames in this column get the same new width.
FOR_ALL_FRAMES(frp, topfrp->fr_child)
{
frame_new_width(frp, width, leftfirst, wfw);
if (frp->fr_width > width)
{
// Could not fit the windows, make whole column wider.
width = frp->fr_width;
break;
}
}
} while (frp != NULL);
}
else // fr_layout == FR_ROW
{
// Complicated case: Resize a row of frames. Resize the rightmost
// frame first, frames left of it when needed.
frp = topfrp->fr_child;
if (wfw)
// Advance past frames with one window with 'wfw' set.
while (frame_fixed_width(frp))
{
frp = frp->fr_next;
if (frp == NULL)
return; // no frame without 'wfw', give up
}
if (!leftfirst)
{
// Find the rightmost frame of this row
while (frp->fr_next != NULL)
frp = frp->fr_next;
if (wfw)
// Advance back for frames with one window with 'wfw' set.
while (frame_fixed_width(frp))
frp = frp->fr_prev;
}
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, wfw);
}
else
{
frame_new_width(frp, frp->fr_width + extra_cols,
leftfirst, wfw);
break;
}
if (leftfirst)
{
do
frp = frp->fr_next;
while (wfw && frp != NULL && frame_fixed_width(frp));
}
else
{
do
frp = frp->fr_prev;
while (wfw && frp != NULL && frame_fixed_width(frp));
}
// Increase "width" if we could not reduce enough frames.
if (frp == NULL)
width -= extra_cols;
}
}
else if (extra_cols > 0)
{
// increase width of rightmost frame
frame_new_width(frp, frp->fr_width + extra_cols, leftfirst, wfw);
}
}
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(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_ALL_FRAMES(frp, frp->fr_child)
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(win_T *wp)
{
wp->w_frame->fr_width = wp->w_width + wp->w_vsep_width;
}
/*
* Set frame height from the window it contains.
*/
static void
frame_fix_height(win_T *wp)
{
wp->w_frame->fr_height = VISIBLE_HEIGHT(wp) + 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(frame_T *topfrp, win_T *next_curwin)
{
frame_T *frp;
int m;
int n;
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;
if (topfrp->fr_win == curwin && next_curwin == NULL)
{
// Current window is minimal one line high and WinBar is
// visible.
if (p_wmh == 0)
++m;
m += WINBAR_HEIGHT(curwin);
}
}
}
else if (topfrp->fr_layout == FR_ROW)
{
// get the minimal height from each frame in this row
m = 0;
FOR_ALL_FRAMES(frp, topfrp->fr_child)
{
n = frame_minheight(frp, next_curwin);
if (n > m)
m = n;
}
}
else
{
// Add up the minimal heights for all frames in this column.
m = 0;
FOR_ALL_FRAMES(frp, topfrp->fr_child)
m += frame_minheight(frp, next_curwin);
}
return m;
}
/*
* 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(
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_ALL_FRAMES(frp, topfrp->fr_child)
{
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_ALL_FRAMES(frp, topfrp->fr_child)
m += frame_minwidth(frp, next_curwin);
}
return m;
}
/*
* 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(
int message,
int forceit) // always hide all other windows
{
win_T *wp;
win_T *nextwp;
int r;
if (one_window())
{
if (message && !autocmd_busy)
msg(_(m_onlyone));
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);
if (!win_valid(wp)) // autocommands messed wp up
{
nextwp = firstwin;
continue;
}
if (!r)
{
#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
if (message && (p_confirm
|| (cmdmod.cmod_flags & CMOD_CONFIRM)) && p_write)
{
dialog_changed(wp->w_buffer, FALSE);
if (!win_valid(wp)) // autocommands messed wp up
{
nextwp = firstwin;
continue;
}
}
if (bufIsChanged(wp->w_buffer))
#endif
continue;
}
win_close(wp, !buf_hide(wp->w_buffer)
&& !bufIsChanged(wp->w_buffer));
}
}
if (message && !ONE_WINDOW)
emsg(_("E445: Other window contains changes"));
}
static void
win_init_empty(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;
wp->w_cursor.coladd = 0;
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;
#if defined(FEAT_SYN_HL) || defined(FEAT_SPELL)
wp->w_s = &wp->w_buffer->b_s;
#endif
}
/*
* Init the current window "curwin".
* Called when a new file is being edited.
*/
void
curwin_init(void)
{
win_init_empty(curwin);
}
/*
* Allocate the first window and put an empty buffer in it.
* Called from main().
* Return FAIL when something goes wrong (out of memory).
*/
int
win_alloc_first(void)
{
if (win_alloc_firstwin(NULL) == FAIL)
return FAIL;
first_tabpage = alloc_tabpage();
if (first_tabpage == NULL)
return FAIL;
first_tabpage->tp_topframe = topframe;
curtab = first_tabpage;
curtab->tp_firstwin = firstwin;
curtab->tp_lastwin = lastwin;
curtab->tp_curwin = curwin;
return OK;
}
/*
* Allocate and init a window that is not a regular window.
* This can only be done after the first window is fully initialized, thus it
* can't be in win_alloc_first().
*/
win_T *
win_alloc_popup_win(void)
{
win_T *wp;
wp = win_alloc(NULL, TRUE);
if (wp != NULL)
{
// We need to initialize options with something, using the current
// window makes most sense.
win_init_some(wp, curwin);
RESET_BINDING(wp);
new_frame(wp);
}
return wp;
}
/*
* Initialize window "wp" to display buffer "buf".
*/
void
win_init_popup_win(win_T *wp, buf_T *buf)
{
wp->w_buffer = buf;
++buf->b_nwindows;
win_init_empty(wp); // set cursor and topline to safe values
// Make sure w_localdir and globaldir are NULL to avoid a chdir() in
// win_enter_ext().
VIM_CLEAR(wp->w_localdir);
}
/*
* Allocate the first window or the first window in a new tab page.
* When "oldwin" is NULL create an empty buffer for it.
* When "oldwin" is not NULL copy info from it to the new window.
* Return FAIL when something goes wrong (out of memory).
*/
static int
win_alloc_firstwin(win_T *oldwin)
{
curwin = win_alloc(NULL, FALSE);
if (oldwin == NULL)
{
// Very first window, need to create an empty buffer for it and
// initialize from scratch.
curbuf = buflist_new(NULL, NULL, 1L, BLN_LISTED);
if (curwin == NULL || curbuf == NULL)
return FAIL;
curwin->w_buffer = curbuf;
#ifdef FEAT_SYN_HL
curwin->w_s = &(curbuf->b_s);
#endif
curbuf->b_nwindows = 1; // there is one window
curwin->w_alist = &global_alist;
curwin_init(); // init current window
}
else
{
// First window in new tab page, initialize it from "oldwin".
win_init(curwin, oldwin, 0);
// We don't want cursor- and scroll-binding in the first window.
RESET_BINDING(curwin);
}
new_frame(curwin);
if (curwin->w_frame == NULL)
return FAIL;
topframe = curwin->w_frame;
topframe->fr_width = Columns;
topframe->fr_height = Rows - p_ch;
return OK;
}
/*
* Create a frame for window "wp".
*/
static void
new_frame(win_T *wp)
{
frame_T *frp = ALLOC_CLEAR_ONE(frame_T);
wp->w_frame = frp;
if (frp != NULL)
{
frp->fr_layout = FR_LEAF;
frp->fr_win = wp;
}
}
/*
* Initialize the window and frame size to the maximum.
*/
void
win_init_size(void)
{
firstwin->w_height = ROWS_AVAIL;
topframe->fr_height = ROWS_AVAIL;
firstwin->w_width = Columns;
topframe->fr_width = Columns;
}
/*
* Allocate a new tabpage_T and init the values.
* Returns NULL when out of memory.
*/
static tabpage_T *
alloc_tabpage(void)
{
tabpage_T *tp;
# ifdef FEAT_GUI
int i;
# endif
tp = ALLOC_CLEAR_ONE(tabpage_T);
if (tp == NULL)
return NULL;
# ifdef FEAT_EVAL
// init t: variables
tp->tp_vars = dict_alloc();
if (tp->tp_vars == NULL)
{
vim_free(tp);
return NULL;
}
init_var_dict(tp->tp_vars, &tp->tp_winvar, VAR_SCOPE);
# endif
# ifdef FEAT_GUI
for (i = 0; i < 3; i++)
tp->tp_prev_which_scrollbars[i] = -1;
# endif
# ifdef FEAT_DIFF
tp->tp_diff_invalid = TRUE;
# endif
tp->tp_ch_used = p_ch;
return tp;
}
void
free_tabpage(tabpage_T *tp)
{
int idx;
# ifdef FEAT_DIFF
diff_clear(tp);
# endif
# ifdef FEAT_PROP_POPUP
while (tp->tp_first_popupwin != NULL)
popup_close_tabpage(tp, tp->tp_first_popupwin->w_id, TRUE);
#endif
for (idx = 0; idx < SNAP_COUNT; ++idx)
clear_snapshot(tp, idx);
#ifdef FEAT_EVAL
vars_clear(&tp->tp_vars->dv_hashtab); // free all t: variables
hash_init(&tp->tp_vars->dv_hashtab);
unref_var_dict(tp->tp_vars);
#endif
if (tp == lastused_tabpage)
lastused_tabpage = NULL;
vim_free(tp->tp_localdir);
vim_free(tp->tp_prevdir);
#ifdef FEAT_PYTHON
python_tabpage_free(tp);
#endif
#ifdef FEAT_PYTHON3
python3_tabpage_free(tp);
#endif
vim_free(tp);
}
/*
* Create a new Tab page with one window.
* It will edit the current buffer, like after ":split".
* When "after" is 0 put it just after the current Tab page.
* Otherwise put it just before tab page "after".
* Return FAIL or OK.
*/
int
win_new_tabpage(int after)
{
tabpage_T *tp = curtab;
tabpage_T *prev_tp = curtab;
tabpage_T *newtp;
int n;
newtp = alloc_tabpage();
if (newtp == NULL)
return FAIL;
// Remember the current windows in this Tab page.
if (leave_tabpage(curbuf, TRUE) == FAIL)
{
vim_free(newtp);
return FAIL;
}
curtab = newtp;
newtp->tp_localdir = (tp->tp_localdir == NULL)
? NULL : vim_strsave(tp->tp_localdir);
// Create a new empty window.
if (win_alloc_firstwin(tp->tp_curwin) == OK)
{
// Make the new Tab page the new topframe.
if (after == 1)
{
// New tab page becomes the first one.
newtp->tp_next = first_tabpage;
first_tabpage = newtp;
}
else
{
if (after > 0)
{
// Put new tab page before tab page "after".
n = 2;
for (tp = first_tabpage; tp->tp_next != NULL
&& n < after; tp = tp->tp_next)
++n;
}
newtp->tp_next = tp->tp_next;
tp->tp_next = newtp;
}
newtp->tp_firstwin = newtp->tp_lastwin = newtp->tp_curwin = curwin;
win_init_size();
firstwin->w_winrow = tabline_height();
win_comp_scroll(curwin);
newtp->tp_topframe = topframe;
last_status(FALSE);
lastused_tabpage = prev_tp;
#if defined(FEAT_GUI)
// When 'guioptions' includes 'L' or 'R' may have to remove or add
// scrollbars. Have to update them anyway.
gui_may_update_scrollbars();
#endif
#ifdef FEAT_JOB_CHANNEL
entering_window(curwin);
#endif
redraw_all_later(NOT_VALID);
apply_autocmds(EVENT_WINNEW, NULL, NULL, FALSE, curbuf);
apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
apply_autocmds(EVENT_TABNEW, NULL, NULL, FALSE, curbuf);
apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
return OK;
}
// Failed, get back the previous Tab page
enter_tabpage(curtab, curbuf, TRUE, TRUE);
return FAIL;
}
/*
* Open a new tab page if ":tab cmd" was used. It will edit the same buffer,
* like with ":split".
* Returns OK if a new tab page was created, FAIL otherwise.
*/
static int
may_open_tabpage(void)
{
int n = (cmdmod.cmod_tab == 0)
? postponed_split_tab : cmdmod.cmod_tab;
if (n != 0)
{
cmdmod.cmod_tab = 0; // reset it to avoid doing it twice
postponed_split_tab = 0;
return win_new_tabpage(n);
}
return FAIL;
}
/*
* Create up to "maxcount" tabpages with empty windows.
* Returns the number of resulting tab pages.
*/
int
make_tabpages(int maxcount)
{
int count = maxcount;
int todo;
// Limit to 'tabpagemax' tabs.
if (count > p_tpm)
count = p_tpm;
/*
* Don't execute autocommands while creating the tab pages. Must do that
* when putting the buffers in the windows.
*/
block_autocmds();
for (todo = count - 1; todo > 0; --todo)
if (win_new_tabpage(0) == FAIL)
break;
unblock_autocmds();
// return actual number of tab pages
return (count - todo);
}
/*
* Return TRUE when "tpc" points to a valid tab page.
*/
int
valid_tabpage(tabpage_T *tpc)
{
tabpage_T *tp;
FOR_ALL_TABPAGES(tp)
if (tp == tpc)
return TRUE;
return FALSE;
}
/*
* Return TRUE when "tpc" points to a valid tab page and at least one window is
* valid.
*/
int
valid_tabpage_win(tabpage_T *tpc)
{
tabpage_T *tp;
win_T *wp;
FOR_ALL_TABPAGES(tp)
{
if (tp == tpc)
{
FOR_ALL_WINDOWS_IN_TAB(tp, wp)
{
if (win_valid_any_tab(wp))
return TRUE;
}
return FALSE;
}
}
// shouldn't happen
return FALSE;
}
/*
* Close tabpage "tab", assuming it has no windows in it.
* There must be another tabpage or this will crash.
*/
void
close_tabpage(tabpage_T *tab)
{
tabpage_T *ptp;
if (tab == first_tabpage)
{
first_tabpage = tab->tp_next;
ptp = first_tabpage;
}
else
{
for (ptp = first_tabpage; ptp != NULL && ptp->tp_next != tab;
ptp = ptp->tp_next)
;
assert(ptp != NULL);
ptp->tp_next = tab->tp_next;
}
goto_tabpage_tp(ptp, FALSE, FALSE);
free_tabpage(tab);
}
/*
* Find tab page "n" (first one is 1). Returns NULL when not found.
*/
tabpage_T *
find_tabpage(int n)
{
tabpage_T *tp;
int i = 1;
if (n == 0)
return curtab;
for (tp = first_tabpage; tp != NULL && i != n; tp = tp->tp_next)
++i;
return tp;
}
/*
* Get index of tab page "tp". First one has index 1.
* When not found returns number of tab pages plus one.
*/
int
tabpage_index(tabpage_T *ftp)
{
int i = 1;
tabpage_T *tp;
for (tp = first_tabpage; tp != NULL && tp != ftp; tp = tp->tp_next)
++i;
return i;
}
/*
* Prepare for leaving the current tab page.
* When autocommands change "curtab" we don't leave the tab page and return
* FAIL.
* Careful: When OK is returned need to get a new tab page very very soon!
*/
static int
leave_tabpage(
buf_T *new_curbuf UNUSED, // what is going to be the new curbuf,
// NULL if unknown
int trigger_leave_autocmds UNUSED)
{
tabpage_T *tp = curtab;
#ifdef FEAT_JOB_CHANNEL
leaving_window(curwin);
#endif
reset_VIsual_and_resel(); // stop Visual mode
if (trigger_leave_autocmds)
{
if (new_curbuf != curbuf)
{
apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
if (curtab != tp)
return FAIL;
}
apply_autocmds(EVENT_WINLEAVE, NULL, NULL, FALSE, curbuf);
if (curtab != tp)
return FAIL;
apply_autocmds(EVENT_TABLEAVE, NULL, NULL, FALSE, curbuf);
if (curtab != tp)
return FAIL;
}
#if defined(FEAT_GUI)
// Remove the scrollbars. They may be added back later.
if (gui.in_use)
gui_remove_scrollbars();
#endif
tp->tp_curwin = curwin;
tp->tp_prevwin = prevwin;
tp->tp_firstwin = firstwin;
tp->tp_lastwin = lastwin;
tp->tp_old_Rows = Rows;
tp->tp_old_Columns = Columns;
firstwin = NULL;
lastwin = NULL;
return OK;
}
/*
* Start using tab page "tp".
* Only to be used after leave_tabpage() or freeing the current tab page.
* Only trigger *Enter autocommands when trigger_enter_autocmds is TRUE.
* Only trigger *Leave autocommands when trigger_leave_autocmds is TRUE.
*/
static void
enter_tabpage(
tabpage_T *tp,
buf_T *old_curbuf UNUSED,
int trigger_enter_autocmds,
int trigger_leave_autocmds)
{
int row;
int old_off = tp->tp_firstwin->w_winrow;
win_T *next_prevwin = tp->tp_prevwin;
tabpage_T *last_tab = curtab;
curtab = tp;
firstwin = tp->tp_firstwin;
lastwin = tp->tp_lastwin;
topframe = tp->tp_topframe;
// We would like doing the TabEnter event first, but we don't have a
// valid current window yet, which may break some commands.
// This triggers autocommands, thus may make "tp" invalid.
win_enter_ext(tp->tp_curwin, FALSE, TRUE, FALSE,
trigger_enter_autocmds, trigger_leave_autocmds);
prevwin = next_prevwin;
last_status(FALSE); // status line may appear or disappear
row = win_comp_pos(); // recompute w_winrow for all windows
#ifdef FEAT_DIFF
diff_need_scrollbind = TRUE;
#endif
// The tabpage line may have appeared or disappeared, may need to resize
// the frames for that. When the Vim window was resized need to update
// frame sizes too. Use the stored value of p_ch, so that it can be
// different for each tab page.
if (p_ch != curtab->tp_ch_used)
clear_cmdline = TRUE;
p_ch = curtab->tp_ch_used;
// When cmdheight is changed in a tab page with '<C-w>-', cmdline_row is
// changed but p_ch and tp_ch_used are not changed. Thus we also need to
// check cmdline_row.
if ((row < cmdline_row) && (cmdline_row <= Rows - p_ch))
clear_cmdline = TRUE;
if (curtab->tp_old_Rows != Rows || (old_off != firstwin->w_winrow
#ifdef FEAT_GUI_TABLINE
&& !gui_use_tabline()
#endif
))
shell_new_rows();
if (curtab->tp_old_Columns != Columns && starting == 0)
shell_new_columns(); // update window widths
lastused_tabpage = last_tab;
#if defined(FEAT_GUI)
// When 'guioptions' includes 'L' or 'R' may have to remove or add
// scrollbars. Have to update them anyway.
gui_may_update_scrollbars();
#endif
// Apply autocommands after updating the display, when 'rows' and
// 'columns' have been set correctly.
if (trigger_enter_autocmds)
{
apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
if (old_curbuf != curbuf)
apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
}
redraw_all_later(NOT_VALID);
}
/*
* Go to tab page "n". For ":tab N" and "Ngt".
* When "n" is 9999 go to the last tab page.
*/
void
goto_tabpage(int n)
{
tabpage_T *tp = NULL; // shut up compiler
tabpage_T *ttp;
int i;
if (text_locked())
{
// Not allowed when editing the command line.
text_locked_msg();
return;
}
// If there is only one it can't work.
if (first_tabpage->tp_next == NULL)
{
if (n > 1)
beep_flush();
return;
}
if (n == 0)
{
// No count, go to next tab page, wrap around end.
if (curtab->tp_next == NULL)
tp = first_tabpage;
else
tp = curtab->tp_next;
}
else if (n < 0)
{
// "gT": go to previous tab page, wrap around end. "N gT" repeats
// this N times.
ttp = curtab;
for (i = n; i < 0; ++i)
{
for (tp = first_tabpage; tp->tp_next != ttp && tp->tp_next != NULL;
tp = tp->tp_next)
;
ttp = tp;
}
}
else if (n == 9999)
{
// Go to last tab page.
for (tp = first_tabpage; tp->tp_next != NULL; tp = tp->tp_next)
;
}
else
{
// Go to tab page "n".
tp = find_tabpage(n);
if (tp == NULL)
{
beep_flush();
return;
}
}
goto_tabpage_tp(tp, TRUE, TRUE);
#ifdef FEAT_GUI_TABLINE
if (gui_use_tabline())
gui_mch_set_curtab(tabpage_index(curtab));
#endif
}
/*
* Go to tabpage "tp".
* Only trigger *Enter autocommands when trigger_enter_autocmds is TRUE.
* Only trigger *Leave autocommands when trigger_leave_autocmds is TRUE.
* Note: doesn't update the GUI tab.
*/
void
goto_tabpage_tp(
tabpage_T *tp,
int trigger_enter_autocmds,
int trigger_leave_autocmds)
{
// Don't repeat a message in another tab page.
set_keep_msg(NULL, 0);
if (tp != curtab && leave_tabpage(tp->tp_curwin->w_buffer,
trigger_leave_autocmds) == OK)
{
if (valid_tabpage(tp))
enter_tabpage(tp, curbuf, trigger_enter_autocmds,
trigger_leave_autocmds);
else
enter_tabpage(curtab, curbuf, trigger_enter_autocmds,
trigger_leave_autocmds);
}
}
/*
* Go to the last accessed tab page, if there is one.
* Return OK or FAIL
*/
int
goto_tabpage_lastused(void)
{
if (valid_tabpage(lastused_tabpage))
{
goto_tabpage_tp(lastused_tabpage, TRUE, TRUE);
return OK;
}
return FAIL;
}
/*
* Enter window "wp" in tab page "tp".
* Also updates the GUI tab.
*/
void
goto_tabpage_win(tabpage_T *tp, win_T *wp)
{
goto_tabpage_tp(tp, TRUE, TRUE);
if (curtab == tp && win_valid(wp))
{
win_enter(wp, TRUE);
# ifdef FEAT_GUI_TABLINE
if (gui_use_tabline())
gui_mch_set_curtab(tabpage_index(curtab));
# endif
}
}
/*
* Move the current tab page to after tab page "nr".
*/
void
tabpage_move(int nr)
{
int n = 1;
tabpage_T *tp, *tp_dst;
if (first_tabpage->tp_next == NULL)
return;
for (tp = first_tabpage; tp->tp_next != NULL && n < nr; tp = tp->tp_next)
++n;
if (tp == curtab || (nr > 0 && tp->tp_next != NULL
&& tp->tp_next == curtab))
return;
tp_dst = tp;
// Remove the current tab page from the list of tab pages.
if (curtab == first_tabpage)
first_tabpage = curtab->tp_next;
else
{
FOR_ALL_TABPAGES(tp)
if (tp->tp_next == curtab)
break;
if (tp == NULL) // "cannot happen"
return;
tp->tp_next = curtab->tp_next;
}
// Re-insert it at the specified position.
if (nr <= 0)
{
curtab->tp_next = first_tabpage;
first_tabpage = curtab;
}
else
{
curtab->tp_next = tp_dst->tp_next;
tp_dst->tp_next = curtab;
}
// Need to redraw the tabline. Tab page contents doesn't change.
redraw_tabline = TRUE;
}
/*
* 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(win_T *wp)
{
#ifdef FEAT_CONCEAL
win_T *owp = curwin;
#endif
#ifdef FEAT_PROP_POPUP
if (ERROR_IF_ANY_POPUP_WINDOW)
return;
if (popup_is_popup(wp))
{
emsg(_("E366: Not allowed to enter a popup window"));
return;
}
#endif
if (text_and_win_locked())
{
beep_flush();
text_locked_msg();
return;
}
if (curbuf_locked())
return;
if (wp->w_buffer != curbuf)
reset_VIsual_and_resel();
else if (VIsual_active)
wp->w_cursor = curwin->w_cursor;
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
win_enter(wp, TRUE);
#ifdef FEAT_CONCEAL
// Conceal cursor line in previous window, unconceal in current window.
if (win_valid(owp) && owp->w_p_cole > 0 && !msg_scrolled)
redrawWinline(owp, owp->w_cursor.lnum);
if (curwin->w_p_cole > 0 && !msg_scrolled)
need_cursor_line_redraw = TRUE;
#endif
}
#if defined(FEAT_PERL) || defined(PROTO)
/*
* Find window number "winnr" (counting top to bottom).
*/
win_T *
win_find_nr(int winnr)
{
win_T *wp;
FOR_ALL_WINDOWS(wp)
if (--winnr == 0)
break;
return wp;
}
#endif
#if ((defined(FEAT_PYTHON) || defined(FEAT_PYTHON3))) || defined(PROTO)
/*
* Find the tabpage for window "win".
*/
tabpage_T *
win_find_tabpage(win_T *win)
{
win_T *wp;
tabpage_T *tp;
FOR_ALL_TAB_WINDOWS(tp, wp)
if (wp == win)
return tp;
return NULL;
}
#endif
/*
* Get the above or below neighbor window of the specified window.
* up - TRUE for the above neighbor
* count - nth neighbor window
* Returns the specified window if the neighbor is not found.
*/
win_T *
win_vert_neighbor(tabpage_T *tp, win_T *wp, int up, long count)
{
frame_T *fr;
frame_T *nfr;
frame_T *foundfr;
#ifdef FEAT_PROP_POPUP
if (popup_is_popup(wp))
// popups don't have neighbors.
return NULL;
#endif
foundfr = wp->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 == tp->tp_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
<= wp->w_wincol + wp->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:
return foundfr != NULL ? foundfr->fr_win : NULL;
}
/*
* Move to window above or below "count" times.
*/
static void
win_goto_ver(
int up, // TRUE to go to win above
long count)
{
win_T *win;
#ifdef FEAT_PROP_POPUP
if (ERROR_IF_TERM_POPUP_WINDOW)
return;
#endif
win = win_vert_neighbor(curtab, curwin, up, count);
if (win != NULL)
win_goto(win);
}
/*
* Get the left or right neighbor window of the specified window.
* left - TRUE for the left neighbor
* count - nth neighbor window
* Returns the specified window if the neighbor is not found.
*/
win_T *
win_horz_neighbor(tabpage_T *tp, win_T *wp, int left, long count)
{
frame_T *fr;
frame_T *nfr;
frame_T *foundfr;
#ifdef FEAT_PROP_POPUP
if (popup_is_popup(wp))
// popups don't have neighbors.
return NULL;
#endif
foundfr = wp->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 == tp->tp_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
<= wp->w_winrow + wp->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:
return foundfr != NULL ? foundfr->fr_win : NULL;
}
/*
* Move to left or right window.
*/
static void
win_goto_hor(
int left, // TRUE to go to left win
long count)
{
win_T *win;
#ifdef FEAT_PROP_POPUP
if (ERROR_IF_TERM_POPUP_WINDOW)
return;
#endif
win = win_horz_neighbor(curtab, curwin, left, count);
if (win != NULL)
win_goto(win);
}
/*
* Make window "wp" the current window.
*/
void
win_enter(win_T *wp, int undo_sync)
{
win_enter_ext(wp, undo_sync, FALSE, FALSE, TRUE, TRUE);
}
/*
* 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(
win_T *wp,
int undo_sync,
int curwin_invalid,
int trigger_new_autocmds,
int trigger_enter_autocmds,
int trigger_leave_autocmds)
{
int other_buffer = FALSE;
if (wp == curwin && !curwin_invalid) // nothing to do
return;
#ifdef FEAT_JOB_CHANNEL
if (!curwin_invalid)
leaving_window(curwin);
#endif
if (!curwin_invalid && trigger_leave_autocmds)
{
/*
* 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
}
// sync undo before leaving the current buffer
if (undo_sync && curbuf != wp->w_buffer)
u_sync(FALSE);
// Might need to scroll the old window before switching, e.g., when the
// cursor was moved.
update_topline();
// 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();
if (!virtual_active())
curwin->w_cursor.coladd = 0;
changed_line_abv_curs(); // assume cursor position needs updating
if (curwin->w_localdir != NULL || curtab->tp_localdir != NULL)
{
char_u *dirname;
// Window or tab 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);
}
if (curwin->w_localdir != NULL)
dirname = curwin->w_localdir;
else
dirname = curtab->tp_localdir;
if (mch_chdir((char *)dirname) == 0)
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.
vim_ignored = mch_chdir((char *)globaldir);
VIM_CLEAR(globaldir);
shorten_fnames(TRUE);
}
#ifdef FEAT_JOB_CHANNEL
entering_window(curwin);
#endif
// Careful: autocommands may close the window and make "wp" invalid
if (trigger_new_autocmds)
apply_autocmds(EVENT_WINNEW, NULL, NULL, FALSE, curbuf);
if (trigger_enter_autocmds)
{
apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
if (other_buffer)
apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
}
#ifdef FEAT_TITLE
maketitle();
#endif
curwin->w_redr_status = TRUE;
#ifdef FEAT_TERMINAL
if (bt_terminal(curwin->w_buffer))
// terminal is likely in another mode
redraw_mode = TRUE;
#endif
redraw_tabline = 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
#ifdef FEAT_PROP_POPUP
&& !popup_is_popup(curwin)
#endif
)
win_setheight((int)p_wh);
else if (curwin->w_height == 0)
win_setheight(1);
// set window width to desired minimal value
if (curwin->w_width < p_wiw && !curwin->w_p_wfw)
win_setwidth((int)p_wiw);
setmouse(); // in case jumped to/from help buffer
// Change directories when the 'acd' option is set.
DO_AUTOCHDIR;
}
/*
* Jump to the first open window that contains buffer "buf", if one exists.
* Returns a pointer to the window found, otherwise NULL.
*/
win_T *
buf_jump_open_win(buf_T *buf)
{
win_T *wp = NULL;
if (curwin->w_buffer == buf)
wp = curwin;
else
FOR_ALL_WINDOWS(wp)
if (wp->w_buffer == buf)
break;
if (wp != NULL)
win_enter(wp, FALSE);
return wp;
}
/*
* Jump to the first open window in any tab page that contains buffer "buf",
* if one exists.
* Returns a pointer to the window found, otherwise NULL.
*/
win_T *
buf_jump_open_tab(buf_T *buf)
{
win_T *wp = buf_jump_open_win(buf);
tabpage_T *tp;
if (wp != NULL)
return wp;
FOR_ALL_TABPAGES(tp)
if (tp != curtab)
{
FOR_ALL_WINDOWS_IN_TAB(tp, wp)
if (wp->w_buffer == buf)
break;
if (wp != NULL)
{
goto_tabpage_win(tp, wp);
if (curwin != wp)
wp = NULL; // something went wrong
break;
}
}
return wp;
}
static int last_win_id = LOWEST_WIN_ID - 1;
/*
* Allocate a window structure and link it in the window list when "hidden" is
* FALSE.
*/
static win_T *
win_alloc(win_T *after UNUSED, int hidden UNUSED)
{
win_T *new_wp;
/*
* allocate window structure and linesizes arrays
*/
new_wp = ALLOC_CLEAR_ONE(win_T);
if (new_wp == NULL)
return NULL;
if (win_alloc_lines(new_wp) == FAIL)
{
vim_free(new_wp);
return NULL;
}
new_wp->w_id = ++last_win_id;
#ifdef FEAT_EVAL
// init w: variables
new_wp->w_vars = dict_alloc();
if (new_wp->w_vars == NULL)
{
win_free_lsize(new_wp);
vim_free(new_wp);
return NULL;
}
init_var_dict(new_wp->w_vars, &new_wp->w_winvar, VAR_SCOPE);
#endif
// Don't execute autocommands while the window is not properly
// initialized yet. gui_create_scrollbar() may trigger a FocusGained
// event.
block_autocmds();
/*
* link the window in the window list
*/
if (!hidden)
win_append(after, new_wp);
new_wp->w_wincol = 0;
new_wp->w_width = Columns;
// position the display and the cursor at the top of the file.
new_wp->w_topline = 1;
#ifdef FEAT_DIFF
new_wp->w_topfill = 0;
#endif
new_wp->w_botline = 2;
new_wp->w_cursor.lnum = 1;
new_wp->w_scbind_pos = 1;
// use global option value for global-local options
new_wp->w_p_so = -1;
new_wp->w_p_siso = -1;
// We won't calculate w_fraction until resizing the window
new_wp->w_fraction = 0;
new_wp->w_prev_fraction_row = -1;
#ifdef FEAT_GUI
if (gui.in_use)
{
gui_create_scrollbar(&new_wp->w_scrollbars[SBAR_LEFT],
SBAR_LEFT, new_wp);
gui_create_scrollbar(&new_wp->w_scrollbars[SBAR_RIGHT],
SBAR_RIGHT, new_wp);
}
#endif
#ifdef FEAT_FOLDING
foldInitWin(new_wp);
#endif
unblock_autocmds();
#ifdef FEAT_SEARCH_EXTRA
new_wp->w_match_head = NULL;
new_wp->w_next_match_id = 4;
#endif
return new_wp;
}
/*
* Remove window 'wp' from the window list and free the structure.
*/
static void
win_free(
win_T *wp,
tabpage_T *tp) // tab page "win" is in, NULL for current
{
int i;
buf_T *buf;
wininfo_T *wip;
#ifdef FEAT_FOLDING
clearFolding(wp);
#endif
// reduce the reference count to the argument list.
alist_unlink(wp->w_alist);
// Don't execute autocommands while the window is halfway being deleted.
// gui_mch_destroy_scrollbar() may trigger a FocusGained event.
block_autocmds();
#ifdef FEAT_LUA
lua_window_free(wp);
#endif
#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_PYTHON3
python3_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
vars_clear(&wp->w_vars->dv_hashtab); // free all w: variables
hash_init(&wp->w_vars->dv_hashtab);
unref_var_dict(wp->w_vars);
#endif
{
tabpage_T *ttp;
if (prevwin == wp)
prevwin = NULL;
FOR_ALL_TABPAGES(ttp)
if (ttp->tp_prevwin == wp)
ttp->tp_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_tagstack[i].user_data);
}
vim_free(wp->w_localdir);
vim_free(wp->w_prevdir);
// Remove the window from the b_wininfo lists, it may happen that the
// freed memory is re-used for another window.
FOR_ALL_BUFFERS(buf)
FOR_ALL_BUF_WININFO(buf, wip)
if (wip->wi_win == wp)
{
wininfo_T *wip2;
// If there already is an entry with "wi_win" set to NULL it
// must be removed, it would never be used.
for (wip2 = buf->b_wininfo; wip2 != NULL; wip2 = wip2->wi_next)
if (wip2->wi_win == NULL)
{
if (wip2->wi_next != NULL)
wip2->wi_next->wi_prev = wip2->wi_prev;
if (wip2->wi_prev == NULL)
buf->b_wininfo = wip2->wi_next;
else
wip2->wi_prev->wi_next = wip2->wi_next;
free_wininfo(wip2);
break;
}
wip->wi_win = NULL;
}
#ifdef FEAT_SEARCH_EXTRA
clear_matches(wp);
#endif
#ifdef FEAT_JUMPLIST
free_jumplist(wp);
#endif
#ifdef FEAT_QUICKFIX
qf_free_all(wp);
#endif
#ifdef FEAT_GUI
if (gui.in_use)
{
gui_mch_destroy_scrollbar(&wp->w_scrollbars[SBAR_LEFT]);
gui_mch_destroy_scrollbar(&wp->w_scrollbars[SBAR_RIGHT]);
}
#endif // FEAT_GUI
#ifdef FEAT_MENU
remove_winbar(wp);
#endif
#ifdef FEAT_PROP_POPUP
free_callback(&wp->w_close_cb);
free_callback(&wp->w_filter_cb);
for (i = 0; i < 4; ++i)
VIM_CLEAR(wp->w_border_highlight[i]);
vim_free(wp->w_scrollbar_highlight);
vim_free(wp->w_thumb_highlight);
vim_free(wp->w_popup_title);
list_unref(wp->w_popup_mask);
vim_free(wp->w_popup_mask_cells);
#endif
#ifdef FEAT_SYN_HL
vim_free(wp->w_p_cc_cols);
#endif
if (win_valid_any_tab(wp))
win_remove(wp, tp);
if (autocmd_busy)
{
wp->w_next = au_pending_free_win;
au_pending_free_win = wp;
}
else
vim_free(wp);
unblock_autocmds();
}
/*
* Return TRUE if "wp" is not in the list of windows: the autocmd window or a
* popup window.
*/
static int
win_unlisted(win_T *wp)
{
return wp == aucmd_win || WIN_IS_POPUP(wp);
}
#if defined(FEAT_PROP_POPUP) || defined(PROTO)
/*
* Free a popup window. This does not take the window out of the window list
* and assumes there is only one toplevel frame, no split.
*/
void
win_free_popup(win_T *win)
{
if (bt_popup(win->w_buffer))
win_close_buffer(win, DOBUF_WIPE_REUSE, FALSE);
else
close_buffer(win, win->w_buffer, 0, FALSE, FALSE);
# if defined(FEAT_TIMERS)
if (win->w_popup_timer != NULL)
stop_timer(win->w_popup_timer);
# endif
vim_free(win->w_frame);
win_free(win, NULL);
}
#endif
/*
* Append window "wp" in the window list after window "after".
*/
static void
win_append(win_T *after, win_T *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.
*/
void
win_remove(
win_T *wp,
tabpage_T *tp) // tab page "win" is in, NULL for current
{
if (wp->w_prev != NULL)
wp->w_prev->w_next = wp->w_next;
else if (tp == NULL)
firstwin = curtab->tp_firstwin = wp->w_next;
else
tp->tp_firstwin = wp->w_next;
if (wp->w_next != NULL)
wp->w_next->w_prev = wp->w_prev;
else if (tp == NULL)
lastwin = curtab->tp_lastwin = wp->w_prev;
else
tp->tp_lastwin = wp->w_prev;
}
/*
* Append frame "frp" in a frame list after frame "after".
*/
static void
frame_append(frame_T *after, frame_T *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(frame_T *before, frame_T *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(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;
// special case: topframe->fr_child == frp
if (topframe->fr_child == frp)
topframe->fr_child = frp->fr_next;
}
if (frp->fr_next != NULL)
frp->fr_next->fr_prev = frp->fr_prev;
}
/*
* Allocate w_lines[] for window "wp".
* Return FAIL for failure, OK for success.
*/
int
win_alloc_lines(win_T *wp)
{
wp->w_lines_valid = 0;
wp->w_lines = ALLOC_CLEAR_MULT(wline_T, Rows );
if (wp->w_lines == NULL)
return FAIL;
return OK;
}
/*
* free lsize arrays for a window
*/
void
win_free_lsize(win_T *wp)
{
// TODO: why would wp be NULL here?
if (wp != NULL)
VIM_CLEAR(wp->w_lines);
}
/*
* Called from win_new_shellsize() after Rows changed.
* This only does the current tab page, others must be done when made active.
*/
void
shell_new_rows(void)
{
int h = (int)ROWS_AVAIL;
if (firstwin == NULL) // not initialized yet
return;
if (h < frame_minheight(topframe, NULL))
h = frame_minheight(topframe, NULL);
// First try setting the heights of windows with 'winfixheight'. If
// that doesn't result in the right height, forget about that option.
frame_new_height(topframe, h, FALSE, TRUE);
if (!frame_check_height(topframe, h))
frame_new_height(topframe, h, FALSE, FALSE);
(void)win_comp_pos(); // recompute w_winrow and w_wincol
compute_cmdrow();
curtab->tp_ch_used = p_ch;
#if 0
// Disabled: don't want making the screen smaller make a window larger.
if (p_ea)
win_equal(curwin, FALSE, 'v');
#endif
}
/*
* Called from win_new_shellsize() after Columns changed.
*/
void
shell_new_columns(void)
{
if (firstwin == NULL) // not initialized yet
return;
// First try setting the widths of windows with 'winfixwidth'. If that
// doesn't result in the right width, forget about that option.
frame_new_width(topframe, (int)Columns, FALSE, TRUE);
if (!frame_check_width(topframe, Columns))
frame_new_width(topframe, (int)Columns, FALSE, 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
}
#if defined(FEAT_CMDWIN) || defined(PROTO)
/*
* Save the size of all windows in "gap".
*/
void
win_size_save(garray_T *gap)
{
win_T *wp;
ga_init2(gap, (int)sizeof(int), 1);
if (ga_grow(gap, win_count() * 2 + 1) == OK)
{
// first entry is value of 'lines'
((int *)gap->ga_data)[gap->ga_len++] = Rows;
FOR_ALL_WINDOWS(wp)
{
((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
* and 'lines' didn't change.
* Does not free the growarray.
*/
void
win_size_restore(garray_T *gap)
{
win_T *wp;
int i, j;
if (win_count() * 2 + 1 == gap->ga_len
&& ((int *)gap->ga_data)[0] == Rows)
{
// The order matters, because frames contain other frames, but it's
// difficult to get right. The easy way out is to do it twice.
for (j = 0; j < 2; ++j)
{
i = 1;
FOR_ALL_WINDOWS(wp)
{
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
/*
* Update the position for all windows, using the width and height of the
* frames.
* Returns the row just after the last window.
*/
int
win_comp_pos(void)
{
int row = tabline_height();
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(frame_T *topfrp, int *row, int *col)
{
win_T *wp;
frame_T *frp;
int startcol;
int startrow;
int h;
wp = topfrp->fr_win;
if (wp != NULL)
{
if (wp->w_winrow != *row || wp->w_wincol != *col)
{
// position changed, redraw
wp->w_winrow = *row;
wp->w_wincol = *col;
redraw_win_later(wp, NOT_VALID);
wp->w_redr_status = TRUE;
}
// WinBar will not show if the window height is zero
h = VISIBLE_HEIGHT(wp) + wp->w_status_height;
*row += h > topfrp->fr_height ? topfrp->fr_height : h;
*col += wp->w_width + wp->w_vsep_width;
}
else
{
startrow = *row;
startcol = *col;
FOR_ALL_FRAMES(frp, topfrp->fr_child)
{
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
frame_comp_pos(frp, row, col);
}
}
}
/*
* Set current window height and take care of repositioning other windows to
* fit around it.
*/
void
win_setheight(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(int height, win_T *win)
{
int row;
if (win == curwin)
{
// Always keep current window at least one line high, even when
// 'winminheight' is zero.
if (height < p_wmh)
height = p_wmh;
if (height == 0)
height = 1;
height += WINBAR_HEIGHT(curwin);
}
frame_setheight(win->w_frame, height + win->w_status_height);
// recompute the window positions
row = win_comp_pos();
/*
* 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);
}
/*
* 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(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_AVAIL)
height = ROWS_AVAIL;
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.
*/
/*
* 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)
{
room = 0;
room_reserved = 0;
FOR_ALL_FRAMES(frp, curfrp->fr_parent->fr_child)
{
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);
}
if (curfrp->fr_width != Columns)
room_cmdline = 0;
else
{
room_cmdline = Rows - p_ch - (lastwin->w_winrow
+ VISIBLE_HEIGHT(lastwin)
+ lastwin->w_status_height);
if (room_cmdline < 0)
room_cmdline = 0;
}
if (height <= room + room_cmdline)
break;
if (run == 2 || curfrp->fr_width == Columns)
{
if (height > room + room_cmdline)
height = room + room_cmdline;
break;
}
frame_setheight(curfrp->fr_parent, height
+ frame_minheight(curfrp->fr_parent, NOWIN) - (int)p_wmh - 1);
}
/*
* 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;
}
}
}
}
/*
* Set current window width and take care of repositioning other windows to
* fit around it.
*/
void
win_setwidth(int width)
{
win_setwidth_win(width, curwin);
}
void
win_setwidth_win(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;
}
else if (width < 0)
width = 0;
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(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;
int room_reserved;
// 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;
room_reserved = 0;
FOR_ALL_FRAMES(frp, curfrp->fr_parent->fr_child)
{
if (frp != curfrp
&& frp->fr_win != NULL
&& frp->fr_win->w_p_wfw)
room_reserved += frp->fr_width;
room += frp->fr_width;
if (frp != curfrp)
room -= frame_minwidth(frp, NULL);
}
if (width <= room)
break;
if (run == 2 || curfrp->fr_height >= ROWS_AVAIL)
{
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;
// If there is not enough room, also reduce the width of a window
// with 'winfixwidth' set.
if (width > room - room_reserved)
room_reserved = room - width;
// If there is only a 'winfixwidth' window and making the
// window smaller, need to make the other window narrower.
if (take < 0 && room - curfrp->fr_width < room_reserved)
room_reserved = 0;
/*
* set the current frame to the new width
*/
frame_new_width(curfrp, width, FALSE, 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 (room_reserved > 0
&& frp->fr_win != NULL
&& frp->fr_win->w_p_wfw)
{
if (room_reserved >= frp->fr_width)
room_reserved -= frp->fr_width;
else
{
if (frp->fr_width - room_reserved > take)
room_reserved = frp->fr_width - take;
take -= frp->fr_width - room_reserved;
frame_new_width(frp, room_reserved, FALSE, FALSE);
room_reserved = 0;
}
}
else
{
if (frp->fr_width - take < w)
{
take -= frp->fr_width - w;
frame_new_width(frp, w, FALSE, FALSE);
}
else
{
frame_new_width(frp, frp->fr_width - take,
FALSE, FALSE);
take = 0;
}
}
if (run == 0)
frp = frp->fr_next;
else
frp = frp->fr_prev;
}
}
}
}
/*
* Check 'winminheight' for a valid value and reduce it if needed.
*/
void
win_setminheight(void)
{
int room;
int needed;
int first = TRUE;
// loop until there is a 'winminheight' that is possible
while (p_wmh > 0)
{
room = Rows - p_ch;
needed = frame_minheight(topframe, NULL);
if (room >= needed)
break;
--p_wmh;
if (first)
{
emsg(_(e_noroom));
first = FALSE;
}
}
}
/*
* Check 'winminwidth' for a valid value and reduce it if needed.
*/
void
win_setminwidth(void)
{
int room;
int needed;
int first = TRUE;
// loop until there is a 'winminheight' that is possible
while (p_wmw > 0)
{
room = Columns;
needed = frame_minwidth(topframe, NULL);
if (room >= needed)
break;
--p_wmw;
if (first)
{
emsg(_(e_noroom));
first = FALSE;
}
}
}
/*
* Status line of dragwin is dragged "offset" lines down (negative is up).
*/
void
win_drag_status_line(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_ALL_FRAMES(fr, curfr->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;
curtab->tp_ch_used = p_ch;
redraw_all_later(SOME_VALID);
showmode();
}
/*
* Separator line of dragwin is dragged "offset" lines right (negative is left).
*/
void
win_drag_vsep_line(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 happen?)
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_ALL_FRAMES(fr, curfr->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;
if (fr == NULL)
return; // Safety check, should not happen.
// grow frame fr by offset lines
frame_new_width(fr, fr->fr_width + offset, left, FALSE);
// 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, FALSE);
}
else
{
frame_new_width(fr, fr->fr_width - offset, !left, FALSE);
break;
}
if (left)
fr = fr->fr_prev;
else
fr = fr->fr_next;
}
(void)win_comp_pos();
redraw_all_later(NOT_VALID);
}
#define FRACTION_MULT 16384L
/*
* Set wp->w_fraction for the current w_wrow and w_height.
* Has no effect when the window is less than two lines.
*/
void
set_fraction(win_T *wp)
{
if (wp->w_height > 1)
// When cursor is in the first line the percentage is computed as if
// it's halfway that line. Thus with two lines it is 25%, with three
// lines 17%, etc. Similarly for the last line: 75%, 83%, etc.
wp->w_fraction = ((long)wp->w_wrow * FRACTION_MULT
+ FRACTION_MULT / 2) / (long)wp->w_height;
}
/*
* Set the height of a window.
* "height" excludes any window toolbar.
* This takes care of the things inside the window, not what happens to the
* window position, the frame or to other windows.
*/
void
win_new_height(win_T *wp, int height)
{
int prev_height = wp->w_height;
// 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_height == height)
return; // nothing to do
if (wp->w_height > 0)
{
if (wp == curwin)
// w_wrow needs to be valid. When setting 'laststatus' this may
// call win_new_height() recursively.
validate_cursor();
if (wp->w_height != prev_height)
return; // Recursive call already changed the size, bail out here
// to avoid the following to mess things up.
if (wp->w_wrow != wp->w_prev_fraction_row)
set_fraction(wp);
}
wp->w_height = height;
wp->w_skipcol = 0;
// There is no point in adjusting the scroll position when exiting. Some
// values might be invalid.
if (!exiting)
scroll_to_fraction(wp, prev_height);
}
void
scroll_to_fraction(win_T *wp, int prev_height)
{
linenr_T lnum;
int sline, line_size;
int height = wp->w_height;
// Don't change w_topline in any of these cases:
// - window height is 0
// - 'scrollbind' is set and this isn't the current window
// - window height is sufficient to display the whole buffer and first line
// is visible.
if (height > 0
&& (!wp->w_p_scb || wp == curwin)
&& (height < wp->w_buffer->b_ml.ml_line_count || wp->w_topline > 1))
{
/*
* Find a value for w_topline that shows the cursor at the same
* relative position in the window as before (more or less).
*/
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)
{
// Make sure the whole cursor line is visible, if possible.
int rows = plines_win(wp, lnum, FALSE);
if (sline > wp->w_height - rows)
{
sline = wp->w_height - rows;
wp->w_wrow -= rows - line_size;
}
}
if (sline < 0)
{
/*
* Cursor line would go off top of screen if w_wrow was this high.
* Make cursor line the first line in the window. If not enough
* room use w_skipcol;
*/
wp->w_wrow = line_size;
if (wp->w_wrow >= wp->w_height
&& (wp->w_width - win_col_off(wp)) > 0)
{
wp->w_skipcol += wp->w_width - win_col_off(wp);
--wp->w_wrow;
while (wp->w_wrow >= wp->w_height)
{
wp->w_skipcol += wp->w_width - win_col_off(wp)
+ win_col_off2(wp);
--wp->w_wrow;
}
}
}
else if (sline > 0)
{
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 (get_scrolloff_value())
update_topline();
curs_columns(FALSE); // validate w_wrow
}
if (prev_height > 0)
wp->w_prev_fraction_row = wp->w_wrow;
win_comp_scroll(wp);
redraw_win_later(wp, SOME_VALID);
wp->w_redr_status = TRUE;
invalidate_botline_win(wp);
}
/*
* Set the width of a window.
*/
void
win_new_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;
}
void
win_comp_scroll(win_T *wp)
{
#if defined(FEAT_EVAL)
int old_w_p_scr = wp->w_p_scr;
#endif
wp->w_p_scr = ((unsigned)wp->w_height >> 1);
if (wp->w_p_scr == 0)
wp->w_p_scr = 1;
#if defined(FEAT_EVAL)
if (wp->w_p_scr != old_w_p_scr)
{
// Used by "verbose set scroll".
wp->w_p_script_ctx[WV_SCROLL].sc_sid = SID_WINLAYOUT;
wp->w_p_script_ctx[WV_SCROLL].sc_lnum = 0;
}
#endif
}
/*
* command_height: called whenever p_ch has been changed
*/
void
command_height(void)
{
int h;
frame_T *frp;
int old_p_ch = curtab->tp_ch_used;
// Use the value of p_ch that we remembered. This is needed for when the
// GUI starts up, we can't be sure in what order things happen. And when
// p_ch was changed in another tab page.
curtab->tp_ch_used = p_ch;
// Find bottom frame with width of screen.
frp = lastwin->w_frame;
while (frp->fr_width != Columns && frp->fr_parent != NULL)
frp = frp->fr_parent;
// 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;
curtab->tp_ch_used = 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();
}
/*
* 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(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(
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 || !ONE_WINDOW))));
}
static void
last_status_rec(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(SOME_VALID);
}
}
else if (fr->fr_layout == FR_ROW)
{
// vertically split windows, set status line for each one
FOR_ALL_FRAMES(fp, fr->fr_child)
last_status_rec(fp, statusline);
}
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);
}
}
/*
* Return the number of lines used by the tab page line.
*/
int
tabline_height(void)
{
#ifdef FEAT_GUI_TABLINE
// When the GUI has the tabline then this always returns zero.
if (gui_use_tabline())
return 0;
#endif
switch (p_stal)
{
case 0: return 0;
case 1: return (first_tabpage->tp_next == NULL) ? 0 : 1;
}
return 1;
}
/*
* Return the minimal number of rows that is needed on the screen to display
* the current number of windows.
*/
int
min_rows(void)
{
int total;
tabpage_T *tp;
int n;
if (firstwin == NULL) // not initialized yet
return MIN_LINES;
total = 0;
FOR_ALL_TABPAGES(tp)
{
n = frame_minheight(tp->tp_topframe, NULL);
if (total < n)
total = n;
}
total += tabline_height();
total += 1; // count the room for the command line
return total;
}
/*
* Return TRUE if there is only one window and only one tab page, not
* counting a help or preview window, unless it is the current window.
* Does not count unlisted windows.
*/
int
only_one_window(void)
{
int count = 0;
win_T *wp;
#if defined(FEAT_PROP_POPUP)
// If the current window is a popup then there always is another window.
if (popup_is_popup(curwin))
return FALSE;
#endif
// If there is another tab page there always is another window.
if (first_tabpage->tp_next != NULL)
return FALSE;
FOR_ALL_WINDOWS(wp)
if (wp->w_buffer != NULL
&& (!((bt_help(wp->w_buffer) && !bt_help(curbuf))
# ifdef FEAT_QUICKFIX
|| wp->w_p_pvw
# endif
) || wp == curwin) && wp != aucmd_win)
++count;
return (count <= 1);
}
/*
* 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(int do_curwin)
{
win_T *wp;
tabpage_T *tp;
FOR_ALL_TAB_WINDOWS(tp, wp)
if ((do_curwin || wp != curwin) && wp->w_buffer == curbuf)
{
// save the original cursor position and topline
wp->w_save_cursor.w_cursor_save = wp->w_cursor;
wp->w_save_cursor.w_topline_save = wp->w_topline;
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;
// save the corrected cursor position and topline
wp->w_save_cursor.w_cursor_corr = wp->w_cursor;
wp->w_save_cursor.w_topline_corr = wp->w_topline;
}
}
/*
* Reset cursor and topline to its stored values from check_lnums().
* check_lnums() must have been called first!
*/
void
reset_lnums()
{
win_T *wp;
tabpage_T *tp;
FOR_ALL_TAB_WINDOWS(tp, wp)
if (wp->w_buffer == curbuf)
{
// Restore the value if the autocommand didn't change it.
if (EQUAL_POS(wp->w_save_cursor.w_cursor_corr, wp->w_cursor))
wp->w_cursor = wp->w_save_cursor.w_cursor_save;
if (wp->w_save_cursor.w_topline_corr == wp->w_topline)
wp->w_topline = wp->w_save_cursor.w_topline_save;
}
}
/*
* 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)
*/
/*
* Create a snapshot of the current frame sizes.
*/
void
make_snapshot(int idx)
{
clear_snapshot(curtab, idx);
make_snapshot_rec(topframe, &curtab->tp_snapshot[idx]);
}
static void
make_snapshot_rec(frame_T *fr, frame_T **frp)
{
*frp = ALLOC_CLEAR_ONE(frame_T);
if (*frp == NULL)
return;
(*frp)->fr_layout = fr->fr_layout;
(*frp)->fr_width = fr->fr_width;
(*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(tabpage_T *tp, int idx)
{
clear_snapshot_rec(tp->tp_snapshot[idx]);
tp->tp_snapshot[idx] = NULL;
}
static void
clear_snapshot_rec(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.
*/
void
restore_snapshot(
int idx,
int close_curwin) // closing current window
{
win_T *wp;
if (curtab->tp_snapshot[idx] != NULL
&& curtab->tp_snapshot[idx]->fr_width == topframe->fr_width
&& curtab->tp_snapshot[idx]->fr_height == topframe->fr_height
&& check_snapshot_rec(curtab->tp_snapshot[idx], topframe) == OK)
{
wp = restore_snapshot_rec(curtab->tp_snapshot[idx], topframe);
win_comp_pos();
if (wp != NULL && close_curwin)
win_goto(wp);
redraw_all_later(NOT_VALID);
}
clear_snapshot(curtab, idx);
}
/*
* Check if frames "sn" and "fr" have the same layout, same following frames
* and same children. And the window pointer is valid.
*/
static int
check_snapshot_rec(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)
|| (sn->fr_win != NULL && !win_valid(sn->fr_win)))
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(frame_T *sn, frame_T *fr)
{
win_T *wp = NULL;
win_T *wp2;
fr->fr_height = sn->fr_height;
fr->fr_width = sn->fr_width;
if (fr->fr_layout == FR_LEAF)
{
frame_new_height(fr, fr->fr_height, FALSE, FALSE);
frame_new_width(fr, fr->fr_width, FALSE, FALSE);
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;
}
#if defined(FEAT_GUI) || defined(PROTO)
/*
* Return TRUE if there is any vertically split window.
*/
int
win_hasvertsplit(void)
{
frame_T *fr;
if (topframe->fr_layout == FR_ROW)
return TRUE;
if (topframe->fr_layout == FR_COL)
FOR_ALL_FRAMES(fr, topframe->fr_child)
if (fr->fr_layout == FR_ROW)
return TRUE;
return FALSE;
}
#endif
#if defined(FEAT_PYTHON) || defined(FEAT_PYTHON3) || defined(PROTO)
int
get_win_number(win_T *wp, win_T *first_win)
{
int i = 1;
win_T *w;
for (w = first_win; w != NULL && w != wp; w = W_NEXT(w))
++i;
if (w == NULL)
return 0;
else
return i;
}
int
get_tab_number(tabpage_T *tp UNUSED)
{
int i = 1;
tabpage_T *t;
for (t = first_tabpage; t != NULL && t != tp; t = t->tp_next)
++i;
if (t == NULL)
return 0;
else
return i;
}
#endif
/*
* Return TRUE if "topfrp" and its children are at the right height.
*/
static int
frame_check_height(frame_T *topfrp, int height)
{
frame_T *frp;
if (topfrp->fr_height != height)
return FALSE;
if (topfrp->fr_layout == FR_ROW)
FOR_ALL_FRAMES(frp, topfrp->fr_child)
if (frp->fr_height != height)
return FALSE;
return TRUE;
}
/*
* Return TRUE if "topfrp" and its children are at the right width.
*/
static int
frame_check_width(frame_T *topfrp, int width)
{
frame_T *frp;
if (topfrp->fr_width != width)
return FALSE;
if (topfrp->fr_layout == FR_COL)
FOR_ALL_FRAMES(frp, topfrp->fr_child)
if (frp->fr_width != width)
return FALSE;
return TRUE;
}
#if defined(FEAT_SYN_HL) || defined(PROTO)
/*
* Simple int comparison function for use with qsort()
*/
static int
int_cmp(const void *a, const void *b)
{
return *(const int *)a - *(const int *)b;
}
/*
* Handle setting 'colorcolumn' or 'textwidth' in window "wp".
* Returns error message, NULL if it's OK.
*/
char *
check_colorcolumn(win_T *wp)
{
char_u *s;
int col;
int count = 0;
int color_cols[256];
int i;
int j = 0;
if (wp->w_buffer == NULL)
return NULL; // buffer was closed
for (s = wp->w_p_cc; *s != NUL && count < 255;)
{
if (*s == '-' || *s == '+')
{
// -N and +N: add to 'textwidth'
col = (*s == '-') ? -1 : 1;
++s;
if (!VIM_ISDIGIT(*s))
return e_invarg;
col = col * getdigits(&s);
if (wp->w_buffer->b_p_tw == 0)
goto skip; // 'textwidth' not set, skip this item
col += wp->w_buffer->b_p_tw;
if (col < 0)
goto skip;
}
else if (VIM_ISDIGIT(*s))
col = getdigits(&s);
else
return e_invarg;
color_cols[count++] = col - 1; // 1-based to 0-based
skip:
if (*s == NUL)
break;
if (*s != ',')
return e_invarg;
if (*++s == NUL)
return e_invarg; // illegal trailing comma as in "set cc=80,"
}
vim_free(wp->w_p_cc_cols);
if (count == 0)
wp->w_p_cc_cols = NULL;
else
{
wp->w_p_cc_cols = ALLOC_MULT(int, count + 1);
if (wp->w_p_cc_cols != NULL)
{
// sort the columns for faster usage on screen redraw inside
// win_line()
qsort(color_cols, count, sizeof(int), int_cmp);
for (i = 0; i < count; ++i)
// skip duplicates
if (j == 0 || wp->w_p_cc_cols[j - 1] != color_cols[i])
wp->w_p_cc_cols[j++] = color_cols[i];
wp->w_p_cc_cols[j] = -1; // end marker
}
}
return NULL; // no error
}
#endif
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