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neovim/src/nvim/window.c

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/*
* 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 "nvim/api/private/handle.h"
#include "nvim/vim.h"
#include "nvim/window.h"
#include "nvim/buffer.h"
#include "nvim/charset.h"
#include "nvim/cursor.h"
#include "nvim/diff.h"
#include "nvim/edit.h"
#include "nvim/eval.h"
#include "nvim/ex_cmds.h"
#include "nvim/ex_cmds2.h"
#include "nvim/ex_docmd.h"
#include "nvim/ex_eval.h"
#include "nvim/ex_getln.h"
#include "nvim/farsi.h"
#include "nvim/fileio.h"
#include "nvim/fold.h"
#include "nvim/getchar.h"
#include "nvim/hashtab.h"
#include "nvim/main.h"
#include "nvim/mark.h"
#include "nvim/memline.h"
#include "nvim/memory.h"
#include "nvim/message.h"
#include "nvim/misc1.h"
#include "nvim/misc2.h"
#include "nvim/file_search.h"
#include "nvim/garray.h"
#include "nvim/move.h"
#include "nvim/normal.h"
#include "nvim/option.h"
#include "nvim/os_unix.h"
#include "nvim/path.h"
#include "nvim/quickfix.h"
#include "nvim/regexp.h"
#include "nvim/screen.h"
#include "nvim/search.h"
#include "nvim/strings.h"
#include "nvim/syntax.h"
#include "nvim/term.h"
#include "nvim/undo.h"
#include "nvim/os/os.h"
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "window.c.generated.h"
#endif
#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");
/*
* 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;
char_u *ptr;
linenr_T lnum = -1;
int type = FIND_DEFINE;
int len;
char_u cbuf[40];
if (Prenum == 0)
Prenum1 = 1;
else
Prenum1 = Prenum;
# define CHECK_CMDWIN if (cmdwin_type != 0) { EMSG(_(e_cmdwin)); break; }
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 */
/* When splitting the quickfix window open a new buffer in it,
* don't replicate the quickfix buffer. */
if (bt_quickfix(curbuf))
goto newwindow;
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 */
/* When splitting the quickfix window open a new buffer in it,
* don't replicate the quickfix buffer. */
if (bt_quickfix(curbuf))
goto newwindow;
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 */
STRCPY(cbuf, "split #");
if (Prenum)
vim_snprintf((char *)cbuf + 7, sizeof(cbuf) - 7,
"%" PRId64, (int64_t)Prenum);
do_cmdline_cmd(cbuf);
break;
/* open new window */
case Ctrl_N:
case 'n':
CHECK_CMDWIN reset_VIsual_and_resel(); /* stop Visual mode */
newwindow:
if (Prenum)
/* window height */
vim_snprintf((char *)cbuf, sizeof(cbuf) - 5, "%" PRId64, (int64_t)Prenum);
else
cbuf[0] = NUL;
if (nchar == 'v' || nchar == Ctrl_V)
STRCAT(cbuf, "v");
STRCAT(cbuf, "new");
do_cmdline_cmd(cbuf);
break;
/* quit current window */
case Ctrl_Q:
case 'q':
reset_VIsual_and_resel(); /* stop Visual mode */
do_cmdline_cmd((char_u *)"quit");
break;
/* close current window */
case Ctrl_C:
case 'c':
reset_VIsual_and_resel(); /* stop Visual mode */
do_cmdline_cmd((char_u *)"close");
break;
/* 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 (wp = firstwin; wp != NULL; wp = wp->w_next)
if (wp->w_p_pvw)
break;
if (wp == NULL)
EMSG(_("E441: There is no preview window"));
else
win_goto(wp);
break;
/* close all but current window */
case Ctrl_O:
case 'o':
CHECK_CMDWIN reset_VIsual_and_resel(); /* stop Visual mode */
do_cmdline_cmd((char_u *)"only");
break;
/* cursor to next window with wrap around */
case Ctrl_W:
case 'w':
/* cursor to previous window with wrap around */
case 'W':
CHECK_CMDWIN
if (firstwin == lastwin && 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':
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 (prevwin == NULL)
beep_flush();
else
win_goto(prevwin);
break;
/* exchange current and next window */
case 'x':
case Ctrl_X:
CHECK_CMDWIN win_exchange(Prenum);
break;
/* rotate windows downwards */
case Ctrl_R:
case 'r':
CHECK_CMDWIN 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 '=':
win_equal(NULL, FALSE, 'b');
break;
/* increase current window height */
case '+':
win_setheight(curwin->w_height + (int)Prenum1);
break;
/* decrease current window height */
case '-':
win_setheight(curwin->w_height - (int)Prenum1);
break;
/* set current window height */
case Ctrl__:
case '_':
win_setheight(Prenum ? (int)Prenum : 9999);
break;
/* increase current window width */
case '>':
win_setwidth(curwin->w_width + (int)Prenum1);
break;
/* decrease current window width */
case '<':
win_setwidth(curwin->w_width - (int)Prenum1);
break;
/* set current window width */
case '|':
win_setwidth(Prenum != 0 ? (int)Prenum : 9999);
break;
/* jump to tag and split window if tag exists (in preview window) */
case '}':
CHECK_CMDWIN
if (Prenum)
g_do_tagpreview = Prenum;
else
g_do_tagpreview = p_pvh;
/*FALLTHROUGH*/
case ']':
case Ctrl_RSB:
CHECK_CMDWIN reset_VIsual_and_resel(); /* stop Visual mode */
if (Prenum)
postponed_split = Prenum;
else
postponed_split = -1;
/* Execute the command right here, required when
* "wincmd ]" was used in a function. */
do_nv_ident(Ctrl_RSB, NUL);
break;
/* 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) {
setpcmark();
if (win_split(0, 0) == OK) {
RESET_BINDING(curwin);
(void)do_ecmd(0, ptr, NULL, NULL, ECMD_LASTL,
ECMD_HIDE, NULL);
if (nchar == 'F' && lnum >= 0) {
curwin->w_cursor.lnum = lnum;
check_cursor_lnum();
beginline(BL_SOL | BL_FIX);
}
}
free(ptr);
}
break;
/* 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;
case K_KENTER:
case CAR:
/*
* In a quickfix window a <CR> jumps to the error under the
* cursor in a new window.
*/
if (bt_quickfix(curbuf)) {
sprintf((char *)cbuf, "split +%" PRId64 "%s",
(int64_t)curwin->w_cursor.lnum,
(curwin->w_llist_ref == NULL) ? "cc" : "ll");
do_cmdline_cmd(cbuf);
}
break;
/* 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;
(void)add_to_showcmd(xchar);
switch (xchar) {
case '}':
xchar = Ctrl_RSB;
if (Prenum)
g_do_tagpreview = Prenum;
else
g_do_tagpreview = p_pvh;
/*FALLTHROUGH*/
case ']':
case Ctrl_RSB:
reset_VIsual_and_resel(); /* stop Visual mode */
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;
case 'f': /* CTRL-W gf: "gf" in a new tab page */
case 'F': /* CTRL-W gF: "gF" in a new tab page */
cmdmod.tab = tabpage_index(curtab) + 1;
nchar = xchar;
goto wingotofile;
default:
beep_flush();
break;
}
break;
default: beep_flush();
break;
}
}
/*
* split the current window, implements CTRL-W s and :split
*
* "size" is the height or width for the new window, 0 to use half of current
* height or width.
*
* "flags":
* WSP_ROOM: require enough room for new window
* WSP_VERT: vertical split.
* WSP_TOP: open window at the top-left of the shell (help window).
* WSP_BOT: open window at the bottom-right of the shell (quickfix window).
* WSP_HELP: creating the help window, keep layout snapshot
*
* return FAIL for failure, OK otherwise
*/
int win_split(int size, int flags)
{
/* 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.split;
if ((flags & WSP_TOP) && (flags & WSP_BOT)) {
EMSG(_("E442: Can't split topleft and botright at the same time"));
return FAIL;
}
/* When creating the help window make a snapshot of the window layout.
* Otherwise clear the snapshot, it's now invalid. */
if (flags & WSP_HELP)
make_snapshot(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;
int before;
if (flags & WSP_TOP)
oldwin = firstwin;
else if (flags & WSP_BOT)
oldwin = lastwin;
else
oldwin = curwin;
/* add a status line when p_ls == 1 and splitting the first window */
if (lastwin == firstwin && p_ls == 1 && oldwin->w_status_height == 0) {
if (oldwin->w_height <= p_wmh && new_wp == NULL) {
EMSG(_(e_noroom));
return FAIL;
}
need_status = STATUS_HEIGHT;
}
if (flags & WSP_VERT) {
layout = FR_ROW;
/*
* Check if we are able to split the current window and compute its
* width.
*/
needed = p_wmw + 1;
if (flags & WSP_ROOM)
needed += p_wiw - p_wmw;
if (p_ea || (flags & (WSP_BOT | WSP_TOP))) {
available = topframe->fr_width;
needed += frame_minwidth(topframe, NULL);
} else
available = oldwin->w_width;
if (available < needed && new_wp == NULL) {
EMSG(_(e_noroom));
return FAIL;
}
if (new_size == 0)
new_size = oldwin->w_width / 2;
if (new_size > oldwin->w_width - p_wmw - 1)
new_size = oldwin->w_width - p_wmw - 1;
if (new_size < p_wmw)
new_size = p_wmw;
/* if it doesn't fit in the current window, need win_equal() */
if (oldwin->w_width - new_size - 1 < p_wmw)
do_equal = TRUE;
/* 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. */
if (oldwin->w_p_wfw)
win_setwidth_win(oldwin->w_width + new_size, 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 - STATUS_HEIGHT)) {
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.
*/
needed = p_wmh + STATUS_HEIGHT + need_status;
if (flags & WSP_ROOM)
needed += p_wh - p_wmh;
if (p_ea || (flags & (WSP_BOT | WSP_TOP))) {
available = topframe->fr_height;
needed += frame_minheight(topframe, NULL);
} else {
available = oldwin->w_height;
needed += p_wmh;
}
if (available < needed && 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 > oldwin_height - p_wmh - STATUS_HEIGHT)
new_size = oldwin_height - p_wmh - STATUS_HEIGHT;
if (new_size < p_wmh)
new_size = p_wmh;
/* if it doesn't fit in the current window, need win_equal() */
if (oldwin_height - new_size - STATUS_HEIGHT < p_wmh)
do_equal = TRUE;
/* We don't like to take lines for the new window from a
* 'winfixheight' window. Take them from a window above or below
* instead, if possible. */
if (oldwin->w_p_wfh) {
win_setheight_win(oldwin->w_height + new_size + STATUS_HEIGHT,
oldwin);
oldwin_height = oldwin->w_height;
if (need_status)
oldwin_height -= STATUS_HEIGHT;
}
/* 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);
/* 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 = xcalloc(1, sizeof(frame_T));
*frp = *curfrp;
curfrp->fr_layout = layout;
frp->fr_parent = curfrp;
frp->fr_next = NULL;
frp->fr_prev = NULL;
curfrp->fr_child = frp;
curfrp->fr_win = NULL;
curfrp = frp;
if (frp->fr_win != NULL)
oldwin->w_frame = frp;
else
for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
frp->fr_parent = curfrp;
}
if (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 (oldwin->w_height > 0)
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));
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, oldwin->w_height);
wp->w_status_height = oldwin->w_status_height;
}
frp->fr_height = curfrp->fr_height;
/* "new_size" of the current window goes to the new window, use
* one column for the vertical separator */
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))
frame_new_height(curfrp, curfrp->fr_height
- (new_size + STATUS_HEIGHT), flags & WSP_TOP, FALSE);
else
win_new_height(oldwin, oldwin_height - (new_size + STATUS_HEIGHT));
if (before) { /* new window above current one */
wp->w_winrow = oldwin->w_winrow;
wp->w_status_height = STATUS_HEIGHT;
oldwin->w_winrow += wp->w_height + STATUS_HEIGHT;
} else { /* new window below current one */
wp->w_winrow = oldwin->w_winrow + oldwin->w_height + STATUS_HEIGHT;
wp->w_status_height = oldwin->w_status_height;
oldwin->w_status_height = STATUS_HEIGHT;
}
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
*/
redraw_win_later(wp, NOT_VALID);
wp->w_redr_status = TRUE;
redraw_win_later(oldwin, NOT_VALID);
oldwin->w_redr_status = TRUE;
if (need_status) {
msg_row = Rows - 1;
msg_col = sc_col;
msg_clr_eos_force(); /* Old command/ruler may still be there */
comp_col();
msg_row = Rows - 1;
msg_col = 0; /* put position back at start of line */
}
/*
* 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;
} else {
i = p_wh;
if (size != 0)
p_wh = size;
}
/*
* make the new window the current window
*/
win_enter(wp, FALSE);
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)
{
int i;
newp->w_buffer = oldp->w_buffer;
newp->w_s = &(oldp->w_buffer->b_s);
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;
newp->w_topfill = oldp->w_topfill;
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;
copy_jumplist(oldp, newp);
if (flags & WSP_NEWLOC) {
/* Don't copy the location list. */
newp->w_llist = NULL;
newp->w_llist_ref = NULL;
} else
copy_loclist(oldp, newp);
newp->w_localdir = (oldp->w_localdir == NULL)
? NULL : vim_strsave(oldp->w_localdir);
/* copy tagstack and folds */
for (i = 0; i < oldp->w_tagstacklen; i++) {
newp->w_tagstack[i] = oldp->w_tagstack[i];
if (newp->w_tagstack[i].tagname != NULL)
newp->w_tagstack[i].tagname =
vim_strsave(newp->w_tagstack[i].tagname);
}
newp->w_tagstackidx = oldp->w_tagstackidx;
newp->w_tagstacklen = oldp->w_tagstacklen;
copyFoldingState(oldp, newp);
win_init_some(newp, oldp);
check_colorcolumn(newp);
}
/*
* 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);
}
/*
* Check if "win" is a pointer to an existing window.
*/
int win_valid(win_T *win)
{
win_T *wp;
if (win == NULL)
return FALSE;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (wp == win)
return TRUE;
return FALSE;
}
/*
* Return the number of windows.
*/
int win_count(void)
{
win_T *wp;
int count = 0;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
++count;
return count;
}
/*
* Make "count" windows on the screen.
* Return actual number of windows on the screen.
* Must be called when there is just one window, filling the whole screen
* (excluding the command line).
*/
int
make_windows (
int count,
int vertical /* 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 = (curwin->w_height + curwin->w_status_height
- (p_wh - p_wmh)) / (p_wmh + STATUS_HEIGHT);
}
if (maxcount < 2)
maxcount = 2;
if (count > maxcount)
count = maxcount;
/*
* add status line now, otherwise first window will be too big
*/
if (count > 1)
last_status(TRUE);
/*
* 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 (lastwin == firstwin) { /* just one window */
beep_flush();
return;
}
/*
* 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_later(CLEAR);
}
/*
* rotate windows: if upwards TRUE the second window becomes the first one
* if upwards FALSE the first window becomes the second one
*/
static void win_rotate(int upwards, int count)
{
win_T *wp1;
win_T *wp2;
frame_T *frp;
int n;
if (firstwin == lastwin) { /* nothing to do */
beep_flush();
return;
}
/* Check if all frames in this row/col have one window. */
for (frp = curwin->w_frame->fr_parent->fr_child; frp != NULL;
frp = frp->fr_next)
if (frp->fr_win == NULL) {
EMSG(_("E443: Cannot rotate when another window is split"));
return;
}
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_later(CLEAR);
}
/*
* 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 (lastwin == firstwin) {
beep_flush();
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');
}
}
/*
* 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) {
/* may need move the status line/vertical separator of the last window
* */
if (win1 == lastwin) {
height = win1->w_prev->w_status_height;
win1->w_prev->w_status_height = win1->w_status_height;
win1->w_status_height = height;
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(CLEAR);
}
} 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 (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next) {
/* 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 (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next) {
n = m = 0;
wincount = 1;
if (fr->fr_next == NULL)
/* last frame gets all that remains (avoid roundoff error) */
new_size = width;
else if (dir == 'v')
new_size = fr->fr_width;
else 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 + (totwincount / 2)) / 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 (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next) {
/* If 'winfixheight' set keep the window height if
* possible.
* Watch out for this window being the next_curwin. */
if (frame_fixed_height(fr)) {
n = frame_minheight(fr, NOWIN);
new_size = fr->fr_height;
if (frame_has_win(fr, next_curwin)) {
room += p_wh - p_wmh;
next_curwin_size = 0;
if (new_size < p_wh)
new_size = p_wh;
} else
/* These windows don't use up room. */
totwincount -= (n + (fr->fr_next == NULL
? extra_sep : 0)) / (p_wmh + 1);
room -= new_size - n;
if (room < 0) {
new_size += room;
room = 0;
}
fr->fr_newheight = new_size;
}
}
if (next_curwin_size == -1) {
if (!has_next_curwin)
next_curwin_size = 0;
else if (totwincount > 1
&& (room + (totwincount - 2))
/ (totwincount - 1) > p_wh) {
/* 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 (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next) {
n = m = 0;
wincount = 1;
if (fr->fr_next == NULL)
/* last frame gets all that remains (avoid roundoff error) */
new_size = height;
else if (dir == 'h')
new_size = fr->fr_height;
else if (frame_fixed_height(fr)) {
new_size = fr->fr_newheight;
wincount = 0; /* doesn't count as a sizeable window */
} else {
/* Compute the maximum number of windows vert. in "fr". */
n = frame_minheight(fr, NOWIN);
wincount = (n + (fr->fr_next == NULL ? extra_sep : 0))
/ (p_wmh + 1);
m = frame_minheight(fr, next_curwin);
if (has_next_curwin)
hnc = frame_has_win(fr, next_curwin);
else
hnc = FALSE;
if (hnc) /* don't count next_curwin */
--wincount;
if (totwincount == 0)
new_size = room;
else
new_size = (wincount * room + (totwincount / 2)) / totwincount;
if (hnc) { /* add next_curwin size */
next_curwin_size -= p_wh - (m - n);
new_size += next_curwin_size;
room -= new_size - next_curwin_size;
} else
room -= new_size;
new_size += n;
}
/* Skip frame that is full width when splitting or closing a
* window, unless equalizing all frames. */
if (!current || dir != 'h' || topfr->fr_parent != NULL
|| (new_size != fr->fr_height)
|| frame_has_win(fr, next_curwin))
win_equal_rec(next_curwin, current, fr, dir, col, row,
width, new_size);
row += new_size;
height -= new_size;
totwincount -= wincount;
}
}
}
/*
* close all windows for buffer 'buf'
*/
void
close_windows (
buf_T *buf,
int keep_curwin /* don't close "curwin" */
)
{
win_T *wp;
tabpage_T *tp, *nexttp;
int h = tabline_height();
++RedrawingDisabled;
for (wp = firstwin; wp != NULL && lastwin != firstwin; ) {
if (wp->w_buffer == buf && (!keep_curwin || wp != curwin)
&& !(wp->w_closing || wp->w_buffer->b_closing)
) {
win_close(wp, FALSE);
/* 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 (wp = tp->tp_firstwin; wp != NULL; wp = wp->w_next)
if (wp->w_buffer == buf
&& !(wp->w_closing || wp->w_buffer->b_closing)
) {
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;
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 (firstwin == lastwin) {
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();
}
/* Since goto_tabpage_tp above did not trigger *Enter autocommands, do
* that now. */
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 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;
if (last_window()) {
EMSG(_("E444: Cannot close last window"));
return FAIL;
}
if (win->w_closing || (win->w_buffer != NULL && win->w_buffer->b_closing))
return FAIL; /* window is already being closed */
if (win == aucmd_win) {
EMSG(_("E813: Cannot close autocmd window"));
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 (win->w_buffer != NULL && win->w_buffer->b_help)
help_window = TRUE;
else
clear_snapshot(curtab, SNAP_HELP_IDX);
if (win == curwin) {
/*
* Guess which window is going to be the new current window.
* This may change because of the autocommands (sigh).
*/
wp = frame2win(win_altframe(win, 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;
/* autocmds may abort script processing */
if (aborting())
return FAIL;
}
/* Free independent synblock before the buffer is freed. */
if (win->w_buffer != NULL)
reset_synblock(win);
/*
* Close the link to the buffer.
*/
if (win->w_buffer != NULL) {
win->w_closing = TRUE;
close_buffer(win, win->w_buffer, free_buf ? DOBUF_UNLOAD : 0, TRUE);
if (win_valid(win))
win->w_closing = FALSE;
}
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 close 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 closed the window already, or closed the only
* other window or moved to another tab page. */
else if (!win_valid(win) || last_window() || curtab != prev_curtab
|| close_last_window_tabpage(win, free_buf, prev_curtab))
return FAIL;
/* 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;
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;
}
}
}
curbuf = curwin->w_buffer;
close_curwin = TRUE;
}
if (p_ea
&& (*p_ead == 'b' || *p_ead == dir)
)
win_equal(curwin, TRUE,
dir
);
else
win_comp_pos();
if (close_curwin) {
win_enter_ext(wp, FALSE, TRUE, TRUE, TRUE);
if (other_buffer)
/* careful: after this wp and win may be invalid! */
apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
}
/*
* 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);
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;
if (win->w_closing || win->w_buffer->b_closing)
return; /* window is already being closed */
/* Close the link to the buffer. */
close_buffer(win, win->w_buffer, free_buf ? DOBUF_UNLOAD : 0, 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 == NULL ? firstwin == lastwin : 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) {
EMSG2(_(e_intern2), "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;
/* Remove the window and its frame from the tree of frames. */
frp = win->w_frame;
wp = winframe_remove(win, dirp, tp);
free(frp);
win_free(win, tp);
/* When deleting the current window of another tab page select a new
* current window. */
if (tp != NULL && win == tp->tp_curwin)
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);
}
#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, /* 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 ? firstwin == lastwin : 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 (frp->fr_win != NULL && !frp->fr_win->w_p_wfh) {
frp2 = frp;
wp = frp->fr_win;
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 (frp->fr_win != NULL && !frp->fr_win->w_p_wfw) {
frp2 = frp;
wp = frp->fr_win;
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 (frp = frp2->fr_child; frp != NULL; frp = frp->fr_next)
frp->fr_parent = frp2->fr_parent;
frp2->fr_parent->fr_win = frp2->fr_win;
if (frp2->fr_win != NULL)
frp2->fr_win->w_frame = frp2->fr_parent;
frp = frp2->fr_parent;
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;
}
}
free(frp);
}
}
return wp;
}
/*
* Find out which frame is going to get the freed up space when "win" is
* closed.
* if 'splitbelow'/'splitleft' the space goes to the window above/left.
* if 'nosplitbelow'/'nosplitleft' the space goes to the window below/right.
* This makes opening a window and closing it immediately keep the same window
* layout.
*/
static frame_T *
win_altframe (
win_T *win,
tabpage_T *tp /* tab page "win" is in, NULL for current */
)
{
frame_T *frp;
int b;
if (tp == NULL ? firstwin == lastwin : tp->tp_firstwin == tp->tp_lastwin)
/* Last window in this tab page, will go to next tab page. */
return alt_tabpage()->tp_curwin->w_frame;
frp = win->w_frame;
if (frp->fr_parent != NULL && frp->fr_parent->fr_layout == FR_ROW)
b = p_spr;
else
b = p_sb;
if ((!b && frp->fr_next != NULL) || frp->fr_prev == NULL)
return frp->fr_next;
return frp->fr_prev;
}
/*
* 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 (p = frp->fr_child; p != NULL; p = p->fr_next)
if (frame_has_win(p, wp))
return TRUE;
return FALSE;
}
/*
* Set a new height for a frame. Recursively sets the height for contained
* frames and windows. Caller must take care of positions.
*/
static void
frame_new_height (
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);
} else if (topfrp->fr_layout == FR_ROW) {
do {
/* All frames in this row get the same new height. */
for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next) {
frame_new_height(frp, height, topfirst, wfh);
if (frp->fr_height > height) {
/* Could not fit the windows, make the whole row higher. */
height = frp->fr_height;
break;
}
}
} while (frp != NULL);
} 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 (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
if (frame_fixed_height(frp))
return TRUE;
return FALSE;
}
/* frp->fr_layout == FR_COL: The frame is fixed height if all of the
* frames in the row are fixed height. */
for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
if (!frame_fixed_height(frp))
return FALSE;
return TRUE;
}
/*
* 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 (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
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 (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
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 (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
frame_add_statusline(frp);
} else { /* frp->fr_layout == FR_COL */
/* Only need to handle the last frame in the column. */
for (frp = frp->fr_child; frp->fr_next != NULL; frp = frp->fr_next)
;
frame_add_statusline(frp);
}
}
/*
* Set width of a frame. Handles recursively going through contained frames.
* May remove separator line for windows at the right side (for win_close()).
*/
static void
frame_new_width (
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 (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next) {
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 (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
frame_add_vsep(frp);
} else { /* frp->fr_layout == FR_ROW */
/* Only need to handle the last frame in the row. */
frp = frp->fr_child;
while (frp->fr_next != NULL)
frp = frp->fr_next;
frame_add_vsep(frp);
}
}
/*
* Set frame width from the window it contains.
*/
static void frame_fix_width(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 = wp->w_height + wp->w_status_height;
}
/*
* Compute the minimal height for frame "topfrp".
* Uses the 'winminheight' option.
* When "next_curwin" isn't NULL, use p_wh for this window.
* When "next_curwin" is NOWIN, don't use at least one line for the current
* window.
*/
static int frame_minheight(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;
/* Current window is minimal one line high */
if (p_wmh == 0 && topfrp->fr_win == curwin && next_curwin == NULL)
++m;
}
} else if (topfrp->fr_layout == FR_ROW) {
/* get the minimal height from each frame in this row */
m = 0;
for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next) {
n = frame_minheight(frp, next_curwin);
if (n > m)
m = n;
}
} else {
/* Add up the minimal heights for all frames in this column. */
m = 0;
for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
m += frame_minheight(frp, next_curwin);
}
return m;
}
/*
* 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 (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next) {
n = frame_minwidth(frp, next_curwin);
if (n > m)
m = n;
}
} else {
/* Add up the minimal widths for all frames in this row. */
m = 0;
for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
m += frame_minwidth(frp, next_curwin);
}
return m;
}
/*
* 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 (message && (p_confirm || cmdmod.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))
continue;
}
win_close(wp, !P_HID(wp->w_buffer) && !bufIsChanged(wp->w_buffer));
}
}
if (message && lastwin != firstwin)
EMSG(_("E445: Other window contains changes"));
}
/*
* Init the current window "curwin".
* Called when a new file is being edited.
*/
void curwin_init(void)
{
win_init_empty(curwin);
}
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;
wp->w_topfill = 0;
wp->w_botline = 2;
if (wp->w_p_rl)
wp->w_farsi = W_CONV + W_R_L;
else
wp->w_farsi = W_CONV;
wp->w_s = &wp->w_buffer->b_s;
}
/*
* Allocate the first window and put an empty buffer in it.
* Called from main().
*
* Return FAIL when something goes wrong.
*/
int win_alloc_first(void)
{
if (win_alloc_firstwin(NULL) == FAIL)
return FAIL;
first_tabpage = alloc_tabpage();
first_tabpage->tp_topframe = topframe;
curtab = first_tabpage;
return OK;
}
/*
* Init "aucmd_win". This can only be done after the first
* window is fully initialized, thus it can't be in win_alloc_first().
*/
void win_alloc_aucmd_win(void)
{
aucmd_win = win_alloc(NULL, TRUE);
win_init_some(aucmd_win, curwin);
RESET_BINDING(aucmd_win);
new_frame(aucmd_win);
}
/*
* 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 (curbuf == NULL)
return FAIL;
curwin->w_buffer = curbuf;
curwin->w_s = &(curbuf->b_s);
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);
topframe = curwin->w_frame;
topframe->fr_width = Columns;
topframe->fr_height = Rows - p_ch;
topframe->fr_win = curwin;
return OK;
}
/*
* Create a frame for window "wp".
*/
static void new_frame(win_T *wp)
{
frame_T *frp = xcalloc(1, sizeof(frame_T));
wp->w_frame = frp;
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.
*/
static tabpage_T *alloc_tabpage(void)
{
tabpage_T *tp = xcalloc(1, sizeof(tabpage_T));
handle_register_tabpage(tp);
/* init t: variables */
tp->tp_vars = dict_alloc();
init_var_dict(tp->tp_vars, &tp->tp_winvar, VAR_SCOPE);
tp->tp_diff_invalid = TRUE;
tp->tp_ch_used = p_ch;
return tp;
}
void free_tabpage(tabpage_T *tp)
{
int idx;
handle_unregister_tabpage(tp);
diff_clear(tp);
for (idx = 0; idx < SNAP_COUNT; ++idx)
clear_snapshot(tp, idx);
vars_clear(&tp->tp_vars->dv_hashtab); /* free all t: variables */
hash_init(&tp->tp_vars->dv_hashtab);
unref_var_dict(tp->tp_vars);
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 *newtp;
int n;
newtp = alloc_tabpage();
/* Remember the current windows in this Tab page. */
if (leave_tabpage(curbuf, TRUE) == FAIL) {
free(newtp);
return FAIL;
}
curtab = newtp;
/* 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;
}
win_init_size();
firstwin->w_winrow = tabline_height();
win_comp_scroll(curwin);
newtp->tp_topframe = topframe;
last_status(FALSE);
redraw_all_later(CLEAR);
apply_autocmds(EVENT_WINENTER, 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.
*/
int may_open_tabpage(void)
{
int n = (cmdmod.tab == 0) ? postponed_split_tab : cmdmod.tab;
if (n != 0) {
cmdmod.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 (tp = first_tabpage; tp != NULL; tp = tp->tp_next)
if (tp == tpc)
return TRUE;
return FALSE;
}
/*
* 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;
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, /* what is going to be the new curbuf,
NULL if unknown */
int trigger_leave_autocmds
)
{
tabpage_T *tp = curtab;
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;
}
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, int trigger_enter_autocmds, int trigger_leave_autocmds)
{
int old_off = tp->tp_firstwin->w_winrow;
win_T *next_prevwin = tp->tp_prevwin;
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,
trigger_enter_autocmds, trigger_leave_autocmds);
prevwin = next_prevwin;
last_status(FALSE); /* status line may appear or disappear */
(void)win_comp_pos(); /* recompute w_winrow for all windows */
must_redraw = CLEAR; /* need to redraw everything */
diff_need_scrollbind = TRUE;
/* 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. */
p_ch = curtab->tp_ch_used;
if (curtab->tp_old_Rows != Rows || (old_off != firstwin->w_winrow
))
shell_new_rows();
if (curtab->tp_old_Columns != Columns && starting == 0)
shell_new_columns(); /* update window widths */
/* 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(CLEAR);
}
/*
* 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;
tabpage_T *ttp;
int i;
if (text_locked()) {
/* Not allowed when editing the command line. */
if (cmdwin_type != 0)
EMSG(_(e_cmdwin));
else
EMSG(_(e_secure));
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);
}
/*
* 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);
}
}
/*
* 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);
}
}
/*
* Move the current tab page to before tab page "nr".
*/
void tabpage_move(int nr)
{
int n = nr;
tabpage_T *tp;
if (first_tabpage->tp_next == NULL)
return;
/* Remove the current tab page from the list of tab pages. */
if (curtab == first_tabpage)
first_tabpage = curtab->tp_next;
else {
for (tp = first_tabpage; tp != NULL; tp = tp->tp_next)
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 (n <= 0) {
curtab->tp_next = first_tabpage;
first_tabpage = curtab;
} else {
for (tp = first_tabpage; tp->tp_next != NULL && n > 1; tp = tp->tp_next)
--n;
curtab->tp_next = tp->tp_next;
tp->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)
{
win_T *owp = curwin;
if (text_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;
win_enter(wp, TRUE);
/* Conceal cursor line in previous window, unconceal in current window. */
if (win_valid(owp) && owp->w_p_cole > 0 && !msg_scrolled)
update_single_line(owp, owp->w_cursor.lnum);
if (curwin->w_p_cole > 0 && !msg_scrolled)
need_cursor_line_redraw = TRUE;
}
/*
* Find the tabpage for window "win".
*/
tabpage_T *win_find_tabpage(win_T *win)
{
win_T *wp;
tabpage_T *tp;
for (tp = first_tabpage; tp != NULL; tp = tp->tp_next)
for (wp = (tp == curtab ? firstwin : tp->tp_firstwin);
wp != NULL; wp = wp->w_next)
if (wp == win)
return tp;
return NULL;
}
/*
* Move to window above or below "count" times.
*/
static void
win_goto_ver (
int up, /* TRUE to go to win above */
long count
)
{
frame_T *fr;
frame_T *nfr;
frame_T *foundfr;
foundfr = curwin->w_frame;
while (count--) {
/*
* First go upwards in the tree of frames until we find a upwards or
* downwards neighbor.
*/
fr = foundfr;
for (;; ) {
if (fr == topframe)
goto end;
if (up)
nfr = fr->fr_prev;
else
nfr = fr->fr_next;
if (fr->fr_parent->fr_layout == FR_COL && nfr != NULL)
break;
fr = fr->fr_parent;
}
/*
* Now go downwards to find the bottom or top frame in it.
*/
for (;; ) {
if (nfr->fr_layout == FR_LEAF) {
foundfr = nfr;
break;
}
fr = nfr->fr_child;
if (nfr->fr_layout == FR_ROW) {
/* Find the frame at the cursor row. */
while (fr->fr_next != NULL
&& frame2win(fr)->w_wincol + fr->fr_width
<= curwin->w_wincol + curwin->w_wcol)
fr = fr->fr_next;
}
if (nfr->fr_layout == FR_COL && up)
while (fr->fr_next != NULL)
fr = fr->fr_next;
nfr = fr;
}
}
end:
if (foundfr != NULL)
win_goto(foundfr->fr_win);
}
/*
* Move to left or right window.
*/
static void
win_goto_hor (
int left, /* TRUE to go to left win */
long count
)
{
frame_T *fr;
frame_T *nfr;
frame_T *foundfr;
foundfr = curwin->w_frame;
while (count--) {
/*
* First go upwards in the tree of frames until we find a left or
* right neighbor.
*/
fr = foundfr;
for (;; ) {
if (fr == topframe)
goto end;
if (left)
nfr = fr->fr_prev;
else
nfr = fr->fr_next;
if (fr->fr_parent->fr_layout == FR_ROW && nfr != NULL)
break;
fr = fr->fr_parent;
}
/*
* Now go downwards to find the leftmost or rightmost frame in it.
*/
for (;; ) {
if (nfr->fr_layout == FR_LEAF) {
foundfr = nfr;
break;
}
fr = nfr->fr_child;
if (nfr->fr_layout == FR_COL) {
/* Find the frame at the cursor row. */
while (fr->fr_next != NULL
&& frame2win(fr)->w_winrow + fr->fr_height
<= curwin->w_winrow + curwin->w_wrow)
fr = fr->fr_next;
}
if (nfr->fr_layout == FR_ROW && left)
while (fr->fr_next != NULL)
fr = fr->fr_next;
nfr = fr;
}
}
end:
if (foundfr != NULL)
win_goto(foundfr->fr_win);
}
/*
* Make window "wp" the current window.
*/
void win_enter(win_T *wp, int undo_sync)
{
win_enter_ext(wp, undo_sync, 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_enter_autocmds, int trigger_leave_autocmds)
{
int other_buffer = FALSE;
if (wp == curwin && !curwin_invalid) /* nothing to do */
return;
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;
/* autocmds may abort script processing */
if (aborting())
return;
}
/* sync undo before leaving the current buffer */
if (undo_sync && curbuf != wp->w_buffer)
u_sync(FALSE);
/* 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) {
/* Window has a local directory: Save current directory as global
* directory (unless that was done already) and change to the local
* directory. */
if (globaldir == NULL) {
char_u cwd[MAXPATHL];
if (os_dirname(cwd, MAXPATHL) == OK)
globaldir = vim_strsave(cwd);
}
if (os_chdir((char *)curwin->w_localdir) == 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. */
ignored = os_chdir((char *)globaldir);
free(globaldir);
globaldir = NULL;
shorten_fnames(TRUE);
}
if (trigger_enter_autocmds) {
apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
if (other_buffer)
apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
}
maketitle();
curwin->w_redr_status = TRUE;
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)
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;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
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;
tabpage_T *tp;
/* First try the current tab page. */
wp = buf_jump_open_win(buf);
if (wp != NULL)
return wp;
for (tp = first_tabpage; tp != NULL; tp = tp->tp_next)
if (tp != curtab) {
for (wp = tp->tp_firstwin; wp != NULL; wp = wp->w_next)
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;
}
/*
* Allocate a window structure and link it in the window list when "hidden" is
* FALSE.
*/
static win_T *win_alloc(win_T *after, int hidden)
{
/*
* allocate window structure and linesizes arrays
*/
win_T *new_wp = xcalloc(1, sizeof(win_T));
handle_register_window(new_wp);
win_alloc_lines(new_wp);
/* init w: variables */
new_wp->w_vars = dict_alloc();
init_var_dict(new_wp->w_vars, &new_wp->w_winvar, VAR_SCOPE);
/* 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;
new_wp->w_topfill = 0;
new_wp->w_botline = 2;
new_wp->w_cursor.lnum = 1;
new_wp->w_scbind_pos = 1;
/* We won't calculate w_fraction until resizing the window */
new_wp->w_fraction = 0;
new_wp->w_prev_fraction_row = -1;
foldInitWin(new_wp);
unblock_autocmds();
new_wp->w_match_head = NULL;
new_wp->w_next_match_id = 4;
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;
handle_unregister_window(wp);
clearFolding(wp);
/* 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();
clear_winopt(&wp->w_onebuf_opt);
clear_winopt(&wp->w_allbuf_opt);
vars_clear(&wp->w_vars->dv_hashtab); /* free all w: variables */
hash_init(&wp->w_vars->dv_hashtab);
unref_var_dict(wp->w_vars);
if (prevwin == wp)
prevwin = NULL;
win_free_lsize(wp);
for (i = 0; i < wp->w_tagstacklen; ++i)
free(wp->w_tagstack[i].tagname);
free(wp->w_localdir);
/* Remove the window from the b_wininfo lists, it may happen that the
* freed memory is re-used for another window. */
for (buf = firstbuf; buf != NULL; buf = buf->b_next)
for (wip = buf->b_wininfo; wip != NULL; wip = wip->wi_next)
if (wip->wi_win == wp)
wip->wi_win = NULL;
clear_matches(wp);
free_jumplist(wp);
qf_free_all(wp);
free(wp->w_p_cc_cols);
if (wp != aucmd_win)
win_remove(wp, tp);
free(wp);
unblock_autocmds();
}
/*
* Append window "wp" in the window list after window "after".
*/
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 = 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 = 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;
if (frp->fr_next != NULL)
frp->fr_next->fr_prev = frp->fr_prev;
}
/*
* Allocate w_lines[] for window "wp".
*/
void win_alloc_lines(win_T *wp)
{
wp->w_lines_valid = 0;
assert(Rows >= 0);
wp->w_lines = xcalloc(Rows, sizeof(wline_T));
}
/*
* free lsize arrays for a window
*/
void win_free_lsize(win_T *wp)
{
free(wp->w_lines);
wp->w_lines = NULL;
}
/*
* 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;
}
/*
* 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 */
}
/*
* Save the size of all windows in "gap".
*/
void win_size_save(garray_T *gap)
{
win_T *wp;
ga_init(gap, (int)sizeof(int), 1);
ga_grow(gap, win_count() * 2);
for (wp = firstwin; wp != NULL; wp = wp->w_next) {
((int *)gap->ga_data)[gap->ga_len++] =
wp->w_width + wp->w_vsep_width;
((int *)gap->ga_data)[gap->ga_len++] = wp->w_height;
}
}
/*
* Restore window sizes, but only if the number of windows is still the same.
* Does not free the growarray.
*/
void win_size_restore(garray_T *gap)
{
win_T *wp;
if (win_count() * 2 == gap->ga_len) {
int i = 0;
for (wp = firstwin; wp != NULL; wp = wp->w_next) {
frame_setwidth(wp->w_frame, ((int *)gap->ga_data)[i++]);
win_setheight_win(((int *)gap->ga_data)[i++], wp);
}
/* recompute the window positions */
(void)win_comp_pos();
}
}
/*
* 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;
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;
}
*row += wp->w_height + wp->w_status_height;
*col += wp->w_width + wp->w_vsep_width;
} else {
startrow = *row;
startcol = *col;
for (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next) {
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;
}
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 (frp = curfrp->fr_parent->fr_child; frp != NULL;
frp = frp->fr_next) {
if (frp != curfrp
&& frp->fr_win != NULL
&& frp->fr_win->w_p_wfh)
room_reserved += frp->fr_height;
room += frp->fr_height;
if (frp != curfrp)
room -= frame_minheight(frp, NULL);
}
if (curfrp->fr_width != Columns)
room_cmdline = 0;
else {
room_cmdline = Rows - p_ch - (lastwin->w_winrow
+ lastwin->w_height +
lastwin->w_status_height);
if (room_cmdline < 0)
room_cmdline = 0;
}
if (height <= room + room_cmdline)
break;
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);
/*NOTREACHED*/
}
/*
* Compute the number of lines we will take from others frames (can be
* negative!).
*/
take = height - curfrp->fr_height;
/* If there is not enough room, also reduce the height of a window
* with 'winfixheight' set. */
if (height > room + room_cmdline - room_reserved)
room_reserved = room + room_cmdline - height;
/* If there is only a 'winfixheight' window and making the
* window smaller, need to make the other window taller. */
if (take < 0 && room - curfrp->fr_height < room_reserved)
room_reserved = 0;
if (take > 0 && room_cmdline > 0) {
/* use lines from cmdline first */
if (take < room_cmdline)
room_cmdline = take;
take -= room_cmdline;
topframe->fr_height += room_cmdline;
}
/*
* set the current frame to the new height
*/
frame_new_height(curfrp, height, FALSE, FALSE);
/*
* First take lines from the frames after the current frame. If
* that is not enough, takes lines from frames above the current
* frame.
*/
for (run = 0; run < 2; ++run) {
if (run == 0)
frp = curfrp->fr_next; /* 1st run: start with next window */
else
frp = curfrp->fr_prev; /* 2nd run: start with prev window */
while (frp != NULL && take != 0) {
h = frame_minheight(frp, NULL);
if (room_reserved > 0
&& frp->fr_win != NULL
&& frp->fr_win->w_p_wfh) {
if (room_reserved >= frp->fr_height)
room_reserved -= frp->fr_height;
else {
if (frp->fr_height - room_reserved > take)
room_reserved = frp->fr_height - take;
take -= frp->fr_height - room_reserved;
frame_new_height(frp, room_reserved, FALSE, FALSE);
room_reserved = 0;
}
} else {
if (frp->fr_height - take < h) {
take -= frp->fr_height - h;
frame_new_height(frp, h, FALSE, FALSE);
} else {
frame_new_height(frp, frp->fr_height - take,
FALSE, FALSE);
take = 0;
}
}
if (run == 0)
frp = frp->fr_next;
else
frp = frp->fr_prev;
}
}
}
}
/*
* 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;
}
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 (frp = curfrp->fr_parent->fr_child; frp != NULL;
frp = frp->fr_next) {
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.
*/
void win_setminheight(void)
{
int room;
int first = TRUE;
win_T *wp;
/* loop until there is a 'winminheight' that is possible */
while (p_wmh > 0) {
/* TODO: handle vertical splits */
room = -p_wh;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
room += wp->w_height - p_wmh;
if (room >= 0)
break;
--p_wmh;
if (first) {
EMSG(_(e_noroom));
first = FALSE;
}
}
}
/*
* 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 (fr = curfr->fr_next; fr != NULL; fr = fr->fr_next)
room += fr->fr_height - frame_minheight(fr, NULL);
fr = curfr; /* put fr at window that grows */
}
if (room < offset) /* Not enough room */
offset = room; /* Move as far as we can */
if (offset <= 0)
return;
/*
* Grow frame fr by "offset" lines.
* Doesn't happen when dragging the last status line up.
*/
if (fr != NULL)
frame_new_height(fr, fr->fr_height + offset, up, FALSE);
if (up)
fr = curfr; /* current frame gets smaller */
else
fr = curfr->fr_next; /* next frame gets smaller */
/*
* Now make the other frames smaller.
*/
while (fr != NULL && offset > 0) {
n = frame_minheight(fr, NULL);
if (fr->fr_height - offset <= n) {
offset -= fr->fr_height - n;
frame_new_height(fr, n, !up, FALSE);
} else {
frame_new_height(fr, fr->fr_height - offset, !up, FALSE);
break;
}
if (up)
fr = fr->fr_prev;
else
fr = fr->fr_next;
}
row = win_comp_pos();
screen_fill(row, cmdline_row, 0, (int)Columns, ' ', ' ', 0);
cmdline_row = row;
p_ch = Rows - cmdline_row;
if (p_ch < 1)
p_ch = 1;
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 (fr = curfr->fr_next; fr != NULL; fr = fr->fr_next)
room += fr->fr_width - frame_minwidth(fr, NULL);
fr = curfr; /* put fr at window that grows */
}
if (room < offset) /* Not enough room */
offset = room; /* Move as far as we can */
if (offset <= 0) /* No room at all, quit. */
return;
/* grow frame fr by offset lines */
frame_new_width(fr, fr->fr_width + offset, left, 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.
*/
static void set_fraction(win_T *wp)
{
wp->w_fraction = ((long)wp->w_wrow * FRACTION_MULT + wp->w_height / 2)
/ (long)wp->w_height;
}
/*
* Set the height of a window.
* This takes care of the things inside the window, not what happens to the
* window position, the frame or to other windows.
*/
void win_new_height(win_T *wp, int height)
{
linenr_T lnum;
int sline, line_size;
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) {
validate_cursor(); // w_wrow needs to be valid
}
if (wp->w_wrow != wp->w_prev_fraction_row) {
set_fraction(wp);
}
}
wp->w_height = height;
wp->w_skipcol = 0;
/* Don't change w_topline when height is zero. Don't set w_topline when
* 'scrollbind' is set and this isn't the current window. */
if (height > 0
&& (!wp->w_p_scb || wp == curwin)
) {
/*
* 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 / 2)
/ 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 {
while (sline > 0 && lnum > 1) {
hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL);
if (lnum == 1) {
/* first line in buffer is folded */
line_size = 1;
--sline;
break;
}
--lnum;
if (lnum == wp->w_topline)
line_size = plines_win_nofill(wp, lnum, TRUE)
+ wp->w_topfill;
else
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.
*/
hasFoldingWin(wp, lnum, NULL, &lnum, TRUE, NULL);
lnum++;
wp->w_wrow -= line_size + sline;
} else if (sline > 0) {
/* First line of file reached, use that as topline. */
lnum = 1;
wp->w_wrow -= sline;
}
}
set_topline(wp, lnum);
}
if (wp == curwin) {
if (p_so)
update_topline();
curs_columns(FALSE); /* validate w_wrow */
}
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)
{
wp->w_p_scr = wp->w_height / 2;
if (wp->w_p_scr == 0)
wp->w_p_scr = 1;
}
/*
* 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;
}
}
/*
* Get the file name at the cursor.
* If Visual mode is active, use the selected text if it's in one line.
* Returns the name in allocated memory, NULL for failure.
*/
char_u *grab_file_name(long count, linenr_T *file_lnum)
{
if (VIsual_active) {
int len;
char_u *ptr;
if (get_visual_text(NULL, &ptr, &len) == FAIL)
return NULL;
return find_file_name_in_path(ptr, len,
FNAME_MESS|FNAME_EXP|FNAME_REL, count, curbuf->b_ffname);
}
return file_name_at_cursor(FNAME_MESS|FNAME_HYP|FNAME_EXP|FNAME_REL, count,
file_lnum);
}
/*
* Return the file name under or after the cursor.
*
* The 'path' option is searched if the file name is not absolute.
* The string returned has been alloc'ed and should be freed by the caller.
* NULL is returned if the file name or file is not found.
*
* options:
* FNAME_MESS give error messages
* FNAME_EXP expand to path
* FNAME_HYP check for hypertext link
* FNAME_INCL apply "includeexpr"
*/
char_u *file_name_at_cursor(int options, long count, linenr_T *file_lnum)
{
return file_name_in_line(get_cursor_line_ptr(),
curwin->w_cursor.col, options, count, curbuf->b_ffname,
file_lnum);
}
/*
* Return the name of the file under or after ptr[col].
* Otherwise like file_name_at_cursor().
*/
char_u *
file_name_in_line (
char_u *line,
int col,
int options,
long count,
char_u *rel_fname, /* file we are searching relative to */
linenr_T *file_lnum /* line number after the file name */
)
{
char_u *ptr;
int len;
/*
* search forward for what could be the start of a file name
*/
ptr = line + col;
while (*ptr != NUL && !vim_isfilec(*ptr))
mb_ptr_adv(ptr);
if (*ptr == NUL) { /* nothing found */
if (options & FNAME_MESS)
EMSG(_("E446: No file name under cursor"));
return NULL;
}
/*
* Search backward for first char of the file name.
* Go one char back to ":" before "//" even when ':' is not in 'isfname'.
*/
while (ptr > line) {
if (has_mbyte && (len = (*mb_head_off)(line, ptr - 1)) > 0)
ptr -= len + 1;
else if (vim_isfilec(ptr[-1])
|| ((options & FNAME_HYP) && path_is_url(ptr - 1)))
--ptr;
else
break;
}
/*
* Search forward for the last char of the file name.
* Also allow "://" when ':' is not in 'isfname'.
*/
len = 0;
while (vim_isfilec(ptr[len])
|| ((options & FNAME_HYP) && path_is_url(ptr + len)))
if (has_mbyte)
len += (*mb_ptr2len)(ptr + len);
else
++len;
/*
* If there is trailing punctuation, remove it.
* But don't remove "..", could be a directory name.
*/
if (len > 2 && vim_strchr((char_u *)".,:;!", ptr[len - 1]) != NULL
&& ptr[len - 2] != '.')
--len;
if (file_lnum != NULL) {
char_u *p;
/* Get the number after the file name and a separator character */
p = ptr + len;
p = skipwhite(p);
if (*p != NUL) {
if (!isdigit(*p))
++p; /* skip the separator */
p = skipwhite(p);
if (isdigit(*p))
*file_lnum = (int)getdigits(&p);
}
}
return find_file_name_in_path(ptr, len, options, count, rel_fname);
}
/*
* 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 || lastwin != firstwin))));
}
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 (fp = fr->fr_child; fp != NULL; fp = fp->fr_next)
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)
{
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 (tp = first_tabpage; tp != NULL; tp = tp->tp_next) {
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 (in the current tab page), not
* counting a help or preview window, unless it is the current window.
* Does not count "aucmd_win".
*/
int only_one_window(void)
{
int count = 0;
win_T *wp;
/* If there is another tab page there always is another window. */
if (first_tabpage->tp_next != NULL)
return FALSE;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (wp->w_buffer != NULL
&& (!((wp->w_buffer->b_help && !curbuf->b_help)
|| wp->w_p_pvw
) || 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) {
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;
}
}
/*
* 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 = xcalloc(1, sizeof(frame_T));
(*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);
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(CLEAR);
}
clear_snapshot(curtab, idx);
}
/*
* Check if frames "sn" and "fr" have the same layout, same following frames
* and same children.
*/
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))
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;
}
/*
* Set "win" to be the curwin and "tp" to be the current tab page.
* restore_win() MUST be called to undo.
* No autocommands will be executed.
* When "no_display" is TRUE the display won't be affected, no redraw is
* triggered, another tabpage access is limited.
* Returns FAIL if switching to "win" failed.
*/
int switch_win(win_T **save_curwin, tabpage_T **save_curtab, win_T *win, tabpage_T *tp, int no_display)
{
block_autocmds();
*save_curwin = curwin;
if (tp != NULL) {
*save_curtab = curtab;
if (no_display) {
curtab->tp_firstwin = firstwin;
curtab->tp_lastwin = lastwin;
curtab = tp;
firstwin = curtab->tp_firstwin;
lastwin = curtab->tp_lastwin;
} else
goto_tabpage_tp(tp, FALSE, FALSE);
}
if (!win_valid(win)) {
unblock_autocmds();
return FAIL;
}
curwin = win;
curbuf = curwin->w_buffer;
return OK;
}
/*
* Restore current tabpage and window saved by switch_win(), if still valid.
* When "no_display" is TRUE the display won't be affected, no redraw is
* triggered.
*/
void restore_win(win_T *save_curwin, tabpage_T *save_curtab, int no_display)
{
if (save_curtab != NULL && valid_tabpage(save_curtab)) {
if (no_display) {
curtab->tp_firstwin = firstwin;
curtab->tp_lastwin = lastwin;
curtab = save_curtab;
firstwin = curtab->tp_firstwin;
lastwin = curtab->tp_lastwin;
} else
goto_tabpage_tp(save_curtab, FALSE, FALSE);
}
if (win_valid(save_curwin)) {
curwin = save_curwin;
curbuf = curwin->w_buffer;
}
unblock_autocmds();
}
/*
* Make "buf" the current buffer. restore_buffer() MUST be called to undo.
* No autocommands will be executed. Use aucmd_prepbuf() if there are any.
*/
void switch_buffer(buf_T **save_curbuf, buf_T *buf)
{
block_autocmds();
*save_curbuf = curbuf;
--curbuf->b_nwindows;
curbuf = buf;
curwin->w_buffer = buf;
++curbuf->b_nwindows;
}
/*
* Restore the current buffer after using switch_buffer().
*/
void restore_buffer(buf_T *save_curbuf)
{
unblock_autocmds();
/* Check for valid buffer, just in case. */
if (buf_valid(save_curbuf)) {
--curbuf->b_nwindows;
curwin->w_buffer = save_curbuf;
curbuf = save_curbuf;
++curbuf->b_nwindows;
}
}
/*
* Add match to the match list of window 'wp'. The pattern 'pat' will be
* highlighted with the group 'grp' with priority 'prio'.
* Optionally, a desired ID 'id' can be specified (greater than or equal to 1).
* If no particular ID is desired, -1 must be specified for 'id'.
* Return ID of added match, -1 on failure.
*/
int match_add(win_T *wp, char_u *grp, char_u *pat, int prio, int id)
{
matchitem_T *cur;
matchitem_T *prev;
matchitem_T *m;
int hlg_id;
regprog_T *regprog;
if (*grp == NUL || *pat == NUL)
return -1;
if (id < -1 || id == 0) {
EMSGN("E799: Invalid ID: %" PRId64
" (must be greater than or equal to 1)",
id);
return -1;
}
if (id != -1) {
cur = wp->w_match_head;
while (cur != NULL) {
if (cur->id == id) {
EMSGN("E801: ID already taken: %" PRId64, id);
return -1;
}
cur = cur->next;
}
}
if ((hlg_id = syn_namen2id(grp, (int)STRLEN(grp))) == 0) {
EMSG2(_(e_nogroup), grp);
return -1;
}
if ((regprog = vim_regcomp(pat, RE_MAGIC)) == NULL) {
EMSG2(_(e_invarg2), pat);
return -1;
}
/* Find available match ID. */
while (id == -1) {
cur = wp->w_match_head;
while (cur != NULL && cur->id != wp->w_next_match_id)
cur = cur->next;
if (cur == NULL)
id = wp->w_next_match_id;
wp->w_next_match_id++;
}
/* Build new match. */
m = xmalloc(sizeof(matchitem_T));
m->id = id;
m->priority = prio;
m->pattern = vim_strsave(pat);
m->hlg_id = hlg_id;
m->match.regprog = regprog;
m->match.rmm_ic = FALSE;
m->match.rmm_maxcol = 0;
/* Insert new match. The match list is in ascending order with regard to
* the match priorities. */
cur = wp->w_match_head;
prev = cur;
while (cur != NULL && prio >= cur->priority) {
prev = cur;
cur = cur->next;
}
if (cur == prev)
wp->w_match_head = m;
else
prev->next = m;
m->next = cur;
redraw_later(SOME_VALID);
return id;
}
/*
* Delete match with ID 'id' in the match list of window 'wp'.
* Print error messages if 'perr' is TRUE.
*/
int match_delete(win_T *wp, int id, int perr)
{
matchitem_T *cur = wp->w_match_head;
matchitem_T *prev = cur;
if (id < 1) {
if (perr == TRUE)
EMSGN("E802: Invalid ID: %" PRId64
" (must be greater than or equal to 1)",
id);
return -1;
}
while (cur != NULL && cur->id != id) {
prev = cur;
cur = cur->next;
}
if (cur == NULL) {
if (perr == TRUE)
EMSGN("E803: ID not found: %" PRId64, id);
return -1;
}
if (cur == prev)
wp->w_match_head = cur->next;
else
prev->next = cur->next;
vim_regfree(cur->match.regprog);
free(cur->pattern);
free(cur);
redraw_later(SOME_VALID);
return 0;
}
/*
* Delete all matches in the match list of window 'wp'.
*/
void clear_matches(win_T *wp)
{
matchitem_T *m;
while (wp->w_match_head != NULL) {
m = wp->w_match_head->next;
vim_regfree(wp->w_match_head->match.regprog);
free(wp->w_match_head->pattern);
free(wp->w_match_head);
wp->w_match_head = m;
}
redraw_later(SOME_VALID);
}
/*
* Get match from ID 'id' in window 'wp'.
* Return NULL if match not found.
*/
matchitem_T *get_match(win_T *wp, int id)
{
matchitem_T *cur = wp->w_match_head;
while (cur != NULL && cur->id != id)
cur = cur->next;
return cur;
}
/*
* 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 (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
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 (frp = topfrp->fr_child; frp != NULL; frp = frp->fr_next)
if (frp->fr_width != width)
return FALSE;
return TRUE;
}
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