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vim-patch:8.1.0372: screen updating slow when 'cursorline' is set (#8986)

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Problem:    Screen updating slow when 'cursorline' is set.
Solution:   Only redraw the old and new cursor line, not all lines.
90a997987d
This commit is contained in:
Justin M. Keyes
2018-09-12 23:06:26 +02:00
committed by GitHub
parent 9124bb755c
commit 7a26b9b62b
3 changed files with 37 additions and 22 deletions
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19
src/nvim/move.c
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@@ -96,16 +96,25 @@ static void comp_botline(win_T *wp)
set_empty_rows(wp, done);
}
/*
* Redraw when w_cline_row changes and 'relativenumber' or 'cursorline' is
* set.
*/
static linenr_T last_cursorline = 0;
// Redraw when w_cline_row changes and 'relativenumber' or 'cursorline' is set.
static void redraw_for_cursorline(win_T *wp)
{
if ((wp->w_p_rnu || wp->w_p_cul)
&& (wp->w_valid & VALID_CROW) == 0
&& !pum_visible()) {
redraw_win_later(wp, SOME_VALID);
if (!wp->w_p_rnu && wp->w_redr_type <= VALID && last_cursorline != 0) {
// "last_cursorline" may be set for another window, worst case we
// redraw too much. This is optimized for moving the cursor around
// in the same window.
redrawWinline(wp, last_cursorline, false);
redrawWinline(wp, wp->w_cursor.lnum, false);
last_cursorline = wp->w_cursor.lnum;
redraw_win_later(wp, VALID);
} else {
redraw_win_later(wp, SOME_VALID);
}
}
}