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Add support for scroll up escape sequence (CSI S) and use it when

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possible instead of sending individual line feeds.
This commit is contained in:
nicm
2017-02-08 17:31:09 +00:00
parent 13a0b6bb3f
commit e100d465da
5 changed files with 71 additions and 4 deletions
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26
tty.c
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@ -1021,6 +1021,32 @@ tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
tty_putc(tty, '\n');
}
void
tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
u_int i;
if ((!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
tty_fake_bce(tty, wp, ctx->bg) ||
!tty_term_has(tty->term, TTYC_CSR)) {
tty_redraw_region(tty, ctx);
return;
}
tty_attributes(tty, &grid_default_cell, wp);
tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
tty_margin_pane(tty, ctx);
if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
tty_cursor(tty, tty->rright, ctx->yoff + tty->rlower);
for (i = 0; i < ctx->num; i++)
tty_putc(tty, '\n');
} else
tty_putcode1(tty, TTYC_INDN, ctx->num);
}
void
tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
{