circlecloud/tmux
1
0
Fork 0
mirror of https://github.com/tmux/tmux.git synced 2025-09-01 20:57:00 +00:00
Code Issues Projects Releases Wiki Activity

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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

39
screen-write.c
View File

@ -839,6 +839,8 @@ screen_write_scrollregion(struct screen_write_ctx *ctx, u_int rupper,
if (rupper >= rlower) /* cannot be one line */
return;
screen_write_collect_flush(ctx);
/* Cursor moves to top-left. */
s->cx = 0;
s->cy = 0;
@ -854,7 +856,6 @@ screen_write_linefeed(struct screen_write_ctx *ctx, int wrapped)
struct screen *s = ctx->s;
struct grid *gd = s->grid;
struct grid_line *gl;
struct tty_ctx ttyctx;
gl = &gd->linedata[gd->hsize + s->cy];
if (wrapped)
@ -864,14 +865,32 @@ screen_write_linefeed(struct screen_write_ctx *ctx, int wrapped)
if (s->cy == s->rlower) {
grid_view_scroll_region_up(gd, s->rupper, s->rlower);
screen_write_collect_scroll(ctx);
screen_write_initctx(ctx, &ttyctx);
tty_write(tty_cmd_linefeed, &ttyctx);
ctx->scrolled++;
} else if (s->cy < screen_size_y(s) - 1)
s->cy++;
}
/* Scroll up. */
void
screen_write_scrollup(struct screen_write_ctx *ctx, u_int lines)
{
struct screen *s = ctx->s;
struct grid *gd = s->grid;
u_int i;
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_up(gd, s->rupper, s->rlower);
screen_write_collect_scroll(ctx);
}
ctx->scrolled += lines;
}
/* Carriage return (cursor to start of line). */
void
screen_write_carriagereturn(struct screen_write_ctx *ctx)
@ -1009,6 +1028,18 @@ screen_write_collect_flush(struct screen_write_ctx *ctx)
u_int y, cx, cy;
struct tty_ctx ttyctx;
if (ctx->scrolled != 0) {
log_debug("%s: scrolled %u (region %u-%u)", __func__,
ctx->scrolled, s->rupper, s->rlower);
if (ctx->scrolled > s->rlower - s->rupper + 1)
ctx->scrolled = s->rlower - s->rupper + 1;
screen_write_initctx(ctx, &ttyctx);
ttyctx.num = ctx->scrolled;
tty_write(tty_cmd_scrollup, &ttyctx);
}
ctx->scrolled = 0;
cx = s->cx; cy = s->cy;
for (y = 0; y < screen_size_y(s); y++) {
TAILQ_FOREACH_SAFE(ci, &ctx->list[y].items, entry, tmp) {