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patch 8.1.1140: not easy to find out what neighbors a window has

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Problem:    Not easy to find out what neighbors a window has.
Solution:   Add more arguments to winnr(). (Yegappan Lakshmanan, closes #3993)
This commit is contained in:
Bram Moolenaar
2019-04-08 20:01:47 +02:00
parent 9845f36aa6
commit 46ad288b9b
6 changed files with 146 additions and 26 deletions
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29
runtime/doc/eval.txt
View File

@@ -10198,17 +10198,30 @@ winline() The result is a Number, which is the screen line of the cursor
*winnr()*
winnr([{arg}]) The result is a Number, which is the number of the current
window. The top window has number 1.
When the optional argument is "$", the number of the
last window is returned (the window count). >
let window_count = winnr('$')
< When the optional argument is "#", the number of the last
accessed window is returned (where |CTRL-W_p| goes to).
If there is no previous window or it is in another tab page 0
is returned.
The optional argument {arg} supports the following values:
$ the number of the last window (the window
count).
# the number of the last accessed window (where
|CTRL-W_p| goes to). If there is no previous
window or it is in another tab page 0 is
returned.
{N}j the number of the Nth window below the
current window (where |CTRL-W_j| goes to).
{N}k the number of the Nth window above the current
window (where |CTRL-W_k| goes to).
{N}h the number of the Nth window left of the
current window (where |CTRL-W_h| goes to).
{N}l the number of the Nth window right of the
current window (where |CTRL-W_l| goes to).
The number can be used with |CTRL-W_w| and ":wincmd w"
|:wincmd|.
Also see |tabpagewinnr()| and |win_getid()|.
Examples: >
let window_count = winnr('$')
let prev_window = winnr('#')
let wnum = winnr('3k')
<
*winrestcmd()*
winrestcmd() Returns a sequence of |:resize| commands that should restore
the current window sizes. Only works properly when no windows

28
src/evalfunc.c
View File

@@ -13982,6 +13982,8 @@ get_winnr(tabpage_T *tp, typval_T *argvar)
twin = (tp == curtab) ? curwin : tp->tp_curwin;
if (argvar->v_type != VAR_UNKNOWN)
{
int invalid_arg = FALSE;
arg = tv_get_string_chk(argvar);
if (arg == NULL)
nr = 0; /* type error; errmsg already given */
@@ -13994,6 +13996,32 @@ get_winnr(tabpage_T *tp, typval_T *argvar)
nr = 0;
}
else
{
long count;
char_u *endp;
// Extract the window count (if specified). e.g. winnr('3j')
count = strtol((char *)arg, (char **)&endp, 10);
if (count <= 0)
count = 1; // if count is not specified, default to 1
if (endp != NULL && *endp != '\0')
{
if (STRCMP(endp, "j") == 0)
twin = win_vert_neighbor(tp, twin, FALSE, count);
else if (STRCMP(endp, "k") == 0)
twin = win_vert_neighbor(tp, twin, TRUE, count);
else if (STRCMP(endp, "h") == 0)
twin = win_horz_neighbor(tp, twin, TRUE, count);
else if (STRCMP(endp, "l") == 0)
twin = win_horz_neighbor(tp, twin, FALSE, count);
else
invalid_arg = TRUE;
}
else
invalid_arg = TRUE;
}
if (invalid_arg)
{
semsg(_(e_invexpr2), arg);
nr = 0;

2
src/proto/window.pro
View File

@@ -37,6 +37,8 @@ void tabpage_move(int nr);
void win_goto(win_T *wp);
win_T *win_find_nr(int winnr);
tabpage_T *win_find_tabpage(win_T *win);
win_T *win_vert_neighbor(tabpage_T *tp, win_T *wp, int up, long count);
win_T *win_horz_neighbor(tabpage_T *tp, win_T * wp, int left, long count);
void win_enter(win_T *wp, int undo_sync);
win_T *buf_jump_open_win(buf_T *buf);
win_T *buf_jump_open_tab(buf_T *buf);

45
src/testdir/test_window_cmd.vim
View File

@@ -743,4 +743,49 @@ func Test_relative_cursor_second_line_after_resize()
let &so = so_save
endfunc
" Tests for the winnr() function
func Test_winnr()
only | tabonly
call assert_equal(1, winnr('j'))
call assert_equal(1, winnr('k'))
call assert_equal(1, winnr('h'))
call assert_equal(1, winnr('l'))
" create a set of horizontally and vertically split windows
leftabove new | wincmd p
leftabove new | wincmd p
rightbelow new | wincmd p
rightbelow new | wincmd p
leftabove vnew | wincmd p
leftabove vnew | wincmd p
rightbelow vnew | wincmd p
rightbelow vnew | wincmd p
call assert_equal(8, winnr('j'))
call assert_equal(2, winnr('k'))
call assert_equal(4, winnr('h'))
call assert_equal(6, winnr('l'))
call assert_equal(9, winnr('2j'))
call assert_equal(1, winnr('2k'))
call assert_equal(3, winnr('2h'))
call assert_equal(7, winnr('2l'))
" Error cases
call assert_fails("echo winnr('0.2k')", 'E15:')
call assert_equal(2, winnr('-2k'))
call assert_fails("echo winnr('-2xj')", 'E15:')
call assert_fails("echo winnr('j2j')", 'E15:')
call assert_fails("echo winnr('ll')", 'E15:')
call assert_fails("echo winnr('5')", 'E15:')
call assert_equal(4, winnr('0h'))
tabnew
call assert_equal(8, tabpagewinnr(1, 'j'))
call assert_equal(2, tabpagewinnr(1, 'k'))
call assert_equal(4, tabpagewinnr(1, 'h'))
call assert_equal(6, tabpagewinnr(1, 'l'))
only | tabonly
endfunc
" vim: shiftwidth=2 sts=2 expandtab

2
src/version.c
View File

@@ -771,6 +771,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
1140,
/**/
1139,
/**/

66
src/window.c
View File

@@ -4218,18 +4218,19 @@ win_find_tabpage(win_T *win)
#endif
/*
* Move to window above or below "count" times.
* Get the above or below neighbor window of the specified window.
* up - TRUE for the above neighbor
* count - nth neighbor window
* Returns the specified window if the neighbor is not found.
*/
static void
win_goto_ver(
int up, /* TRUE to go to win above */
long count)
win_T *
win_vert_neighbor(tabpage_T *tp, win_T *wp, int up, long count)
{
frame_T *fr;
frame_T *nfr;
frame_T *foundfr;
foundfr = curwin->w_frame;
foundfr = wp->w_frame;
while (count--)
{
/*
@@ -4239,7 +4240,7 @@ win_goto_ver(
fr = foundfr;
for (;;)
{
if (fr == topframe)
if (fr == tp->tp_topframe)
goto end;
if (up)
nfr = fr->fr_prev;
@@ -4266,7 +4267,7 @@ win_goto_ver(
/* 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)
<= wp->w_wincol + wp->w_wcol)
fr = fr->fr_next;
}
if (nfr->fr_layout == FR_COL && up)
@@ -4276,23 +4277,38 @@ win_goto_ver(
}
}
end:
if (foundfr != NULL)
win_goto(foundfr->fr_win);
return foundfr != NULL ? foundfr->fr_win : NULL;
}
/*
* Move to left or right window.
* Move to window above or below "count" times.
*/
static void
win_goto_hor(
int left, /* TRUE to go to left win */
win_goto_ver(
int up, // TRUE to go to win above
long count)
{
win_T *win;
win = win_vert_neighbor(curtab, curwin, up, count);
if (win != NULL)
win_goto(win);
}
/*
* Get the left or right neighbor window of the specified window.
* left - TRUE for the left neighbor
* count - nth neighbor window
* Returns the specified window if the neighbor is not found.
*/
win_T *
win_horz_neighbor(tabpage_T *tp, win_T * wp, int left, long count)
{
frame_T *fr;
frame_T *nfr;
frame_T *foundfr;
foundfr = curwin->w_frame;
foundfr = wp->w_frame;
while (count--)
{
/*
@@ -4302,7 +4318,7 @@ win_goto_hor(
fr = foundfr;
for (;;)
{
if (fr == topframe)
if (fr == tp->tp_topframe)
goto end;
if (left)
nfr = fr->fr_prev;
@@ -4329,7 +4345,7 @@ win_goto_hor(
/* 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)
<= wp->w_winrow + wp->w_wrow)
fr = fr->fr_next;
}
if (nfr->fr_layout == FR_ROW && left)
@@ -4339,8 +4355,22 @@ win_goto_hor(
}
}
end:
if (foundfr != NULL)
win_goto(foundfr->fr_win);
return foundfr != NULL ? foundfr->fr_win : NULL;
}
/*
* Move to left or right window.
*/
static void
win_goto_hor(
int left, // TRUE to go to left win
long count)
{
win_T *win;
win = win_horz_neighbor(curtab, curwin, left, count);
if (win != NULL)
win_goto(win);
}
/*