diff options
| author |   nicm <nicm@openbsd.org> | 2019-08-05 06:42:02 +0000 |
|---|---|---|
| committer | nicm <nicm@openbsd.org> | 2019-08-05 06:42:02 +0000 |
| commit | fa32c33cb2c940fdf5a9d0692815170e0597af5f (patch) | |
| tree | d447f85d67802ac6e46f4cae24fc0f2fd347a34c /usr.bin/tmux/screen-write.c | |
| parent | Xr pf 4 (diff) | |
| download | wireguard-openbsd-fa32c33cb2c940fdf5a9d0692815170e0597af5f.tar.xz wireguard-openbsd-fa32c33cb2c940fdf5a9d0692815170e0597af5f.zip | |
Add support for the SD (scroll down) escape sequence, GitHub issue 1861.
Diffstat (limited to 'usr.bin/tmux/screen-write.c')
| -rw-r--r-- | usr.bin/tmux/screen-write.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/usr.bin/tmux/screen-write.c b/usr.bin/tmux/screen-write.c index 0a8d6665755..7e169c21c2d 100644 --- a/usr.bin/tmux/screen-write.c +++ b/usr.bin/tmux/screen-write.c @@ -1,4 +1,4 @@ -/* $OpenBSD: screen-write.c,v 1.156 2019/07/08 11:38:14 nicm Exp $ */ +/* $OpenBSD: screen-write.c,v 1.157 2019/08/05 06:42:02 nicm Exp $ */ /* * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> @@ -1088,6 +1088,31 @@ screen_write_scrollup(struct screen_write_ctx *ctx, u_int lines, u_int bg) ctx->scrolled += lines; } +/* Scroll down. */ +void +screen_write_scrolldown(struct screen_write_ctx *ctx, u_int lines, u_int bg) +{ + struct screen *s = ctx->s; + struct grid *gd = s->grid; + struct tty_ctx ttyctx; + u_int i; + + screen_write_initctx(ctx, &ttyctx); + ttyctx.bg = bg; + + if (lines == 0) + lines = 1; + else if (lines > s->rlower - s->rupper + 1) + lines = s->rlower - s->rupper + 1; + + for (i = 0; i < lines; i++) + grid_view_scroll_region_down(gd, s->rupper, s->rlower, bg); + + screen_write_collect_flush(ctx, 0); + ttyctx.num = lines; + tty_write(tty_cmd_scrolldown, &ttyctx); +} + /* Carriage return (cursor to start of line). */ void screen_write_carriagereturn(struct screen_write_ctx *ctx) |