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| author | nicm <nicm> | 2019-08-05 06:42:02 +0000 |
|---|---|---|
| committer | Nicholas Marriott <nicholas.marriott@gmail.com> | 2019-08-26 17:28:24 +0100 |
| commit | 79f09b4d855b2339db2c859266135ab1b6368a61 (patch) | |
| tree | c5ea8f88c382bdecf9b1b47ece54dc7b27df561d /screen-write.c | |
| parent | e85ea9f67dcecab91599a658ad694d8e08514509 (diff) | |
| download | rtmux-79f09b4d855b2339db2c859266135ab1b6368a61.tar.gz rtmux-79f09b4d855b2339db2c859266135ab1b6368a61.tar.bz2 rtmux-79f09b4d855b2339db2c859266135ab1b6368a61.zip | |
Add support for the SD (scroll down) escape sequence, GitHub issue 1861.
Diffstat (limited to 'screen-write.c')
| -rw-r--r-- | screen-write.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/screen-write.c b/screen-write.c index 98cdf158..66053eaf 100644 --- a/screen-write.c +++ b/screen-write.c @@ -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) |