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Check overlay/BCE first to avoid walking panes unless needed.

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This commit is contained in:
Nicholas Marriott
2026-05-22 18:03:01 +01:00
parent 71de737ee8
commit 29a1a1f8b0
1 changed files with 32 additions and 31 deletions
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39
tty.c
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@@ -1004,10 +1004,7 @@ tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
else if (cy > w->sy - *sy)
*oy = w->sy - *sy;
else
/* cy-sy/2 was causing panned panes to scroll
* when the cursor was half way down the pane.
*/
*oy = cy - *sy + 1; /* cy - *sy / 2; */
*oy = cy - *sy + 1;
}
c->pan_window = NULL;
@@ -1096,17 +1093,14 @@ tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
* If region is large, schedule a redraw. In most cases this is likely
* to be followed by some more scrolling.
*/
log_debug("%s: %s orlower=%u orupper=%u sy=%u large=%d", __func__,
c->name, ctx->orlower, ctx->orupper, ctx->sy,
tty_large_region(tty, ctx));
if (tty_large_region(tty, ctx) && ~ctx->flags & TTY_CTX_PANE_OBSCURED) {
log_debug("%s: %s large region redraw", __func__, c->name);
ctx->redraw_cb(ctx);
return;
}
log_debug("%s: %s small redraw, drawing rows %u-%u", __func__,
c->name, ctx->orupper, ctx->orlower);
log_debug("%s: %s small region redraw (%u-%u)", __func__, c->name,
ctx->orupper, ctx->orlower);
for (i = ctx->orupper; i <= ctx->orlower; i++)
tty_draw_pane(tty, ctx, i);
}
@@ -1316,7 +1310,7 @@ tty_clear_area(struct tty *tty, const struct tty_ctx *ctx, u_int py,
struct window_pane *wpl, *wp = ctx->arg;
struct visible_ranges *r;
struct visible_range *ri;
u_int i, yy, overlap = 0, oy = 0;
u_int i, yy, region = 1, oy = 0;
char tmp[64];
log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py);
@@ -1325,7 +1319,14 @@ tty_clear_area(struct tty *tty, const struct tty_ctx *ctx, u_int py,
if (nx == 0 || ny == 0)
return;
/* Verify there's nothing overlapping in z-index before using BCE. */
/*
* If there is an overlay or BCE is not available, cannot clear as a
* region.
*/
if (c->overlay_check != NULL || tty_fake_bce(tty, defaults, bg))
region = 0;
else {
/* Any overlapping pane also means no region. */
TAILQ_FOREACH(wpl, &w->z_index, zentry) {
if (wpl == wp || ~wpl->flags & PANE_FLOATING)
continue;
@@ -1335,13 +1336,13 @@ tty_clear_area(struct tty *tty, const struct tty_ctx *ctx, u_int py,
if ((int)wpl->yoff - 1 > (int)(py + ny) ||
wpl->yoff + (int)wpl->sy + 1 < (int)py)
continue;
overlap++;
if (overlap > 0) break;
region = 0;
break;
}
}
/* If genuine BCE is available, can try escape sequences. */
if (!overlap && c->overlay_check == NULL &&
!tty_fake_bce(tty, defaults, bg)) {
/* Clear as a region if possible. */
if (region) {
/* Use ED if clearing off the bottom of the terminal. */
if (px == 0 &&
px + nx >= tty->sx &&
@@ -1392,15 +1393,15 @@ tty_clear_area(struct tty *tty, const struct tty_ctx *ctx, u_int py,
}
}
/* Couldn't use an escape sequence, loop over the lines. */
if (c->session->statusat == 0)
oy = c->session->statuslines;
/* Couldn't use an escape sequence, loop over the lines. */
for (yy = py; yy < py + ny; yy++) {
r = tty_check_overlay_range(tty, px, yy - oy, nx);
for (i = 0; i < r->used; i++) {
ri = &r->ranges[i];
if (ri->nx == 0) continue;
if (ri->nx == 0)
continue;
tty_clear_line(tty, defaults, yy, ri->px, ri->nx, bg);
}
}