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patch 8.2.4713: plugins cannot track text scrolling

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Problem:    Plugins cannot track text scrolling.
Solution:   Add the WinScrolled event. (closes #10102)
This commit is contained in:
LemonBoy
2022-04-08 15:18:45 +01:00
committed by Bram Moolenaar
parent 18ee0f603e
commit 0937182d49
12 changed files with 153 additions and 5 deletions
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22
src/autocmd.c
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@@ -190,6 +190,7 @@ static struct event_name
{"WinClosed", EVENT_WINCLOSED},
{"WinEnter", EVENT_WINENTER},
{"WinLeave", EVENT_WINLEAVE},
{"WinScrolled", EVENT_WINSCROLLED},
{"VimResized", EVENT_VIMRESIZED},
{"TextYankPost", EVENT_TEXTYANKPOST},
{"VimSuspend", EVENT_VIMSUSPEND},
@@ -1251,6 +1252,15 @@ do_autocmd_event(
vim_free(rettv.vval.v_string);
}
#endif
// Initialize the fields checked by the WinScrolled trigger to
// stop it from firing right after the first autocmd is defined.
if (event == EVENT_WINSCROLLED && !has_winscrolled())
{
curwin->w_last_topline = curwin->w_topline;
curwin->w_last_leftcol = curwin->w_leftcol;
curwin->w_last_width = curwin->w_width;
curwin->w_last_height = curwin->w_height;
}
if (is_buflocal)
{
@@ -1782,6 +1792,15 @@ trigger_cursorhold(void)
return FALSE;
}
/*
* Return TRUE when there is a WinScrolled autocommand defined.
*/
int
has_winscrolled(void)
{
return (first_autopat[(int)EVENT_WINSCROLLED] != NULL);
}
/*
* Return TRUE when there is a CursorMoved autocommand defined.
*/
@@ -2078,7 +2097,8 @@ apply_autocmds_group(
|| event == EVENT_DIRCHANGEDPRE
|| event == EVENT_MODECHANGED
|| event == EVENT_USER
|| event == EVENT_WINCLOSED)
|| event == EVENT_WINCLOSED
|| event == EVENT_WINSCROLLED)
{
fname = vim_strsave(fname);
autocmd_fname_full = TRUE; // don't expand it later