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Track window scrolling for damage.

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This commit is contained in:
Nicholas Marriott
2026-10-14 13:47:12 +01:00
parent cae2f4319e
commit d78914317c
3 changed files with 50 additions and 0 deletions
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34
screen-redraw.c
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@@ -1111,6 +1111,7 @@ redraw_free_damage(struct window *w)
free(rd);
}
w->damage_count = 0;
w->scroll_pending = 0;
}
/* Collapse all pending damage for a window into one rectangle. */
@@ -1209,6 +1210,39 @@ redraw_damage_window(struct window *w, u_int x, u_int y, u_int sx, u_int sy)
redraw_apply_window_damage(w, x, y, sx, sy, 0);
}
/* Record damage caused by terminal scrolling. */
void
redraw_damage_scroll(struct window *w, u_int x, u_int y, u_int sx, u_int sy)
{
if (!w->scroll_pending) {
w->scroll_generation++;
w->scroll_pending = 1;
}
redraw_apply_window_damage(w, x, y, sx, sy, REDRAW_DAMAGE_SCROLL);
}
/* Remember whether this client used terminal scrolling for the damage. */
void
redraw_scroll_result(struct tty *tty, const struct tty_ctx *ctx, int failed)
{
struct window_pane *wp = ctx->arg;
struct window *w;
if (wp == NULL)
return;
w = wp->window;
if (!w->scroll_pending)
return;
if (tty->scroll_window != w ||
tty->scroll_generation != w->scroll_generation) {
tty->scroll_window = w;
tty->scroll_generation = w->scroll_generation;
tty->scroll_failed = 0;
}
if (failed)
tty->scroll_failed = 1;
}
/* Mark all cached redraw scenes as out of date. */
void
redraw_invalidate_all_scenes(void)