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Associate each visible_ranges with some other object (tty, popup_data, etc) so

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it is easier to keep track of its lifecycle, but still avoid allocating for
each use.
This commit is contained in:
Nicholas Marriott
2026-01-21 21:26:32 +00:00
parent b22537e8a4
commit d1a6ce8e7f
6 changed files with 167 additions and 166 deletions
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34
server-client.c
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@@ -161,6 +161,29 @@ server_client_clear_overlay(struct client *c)
server_redraw_client(c);
}
/* Are these ranges empty? That is, nothing is visible. */
int
server_client_ranges_is_empty(struct visible_ranges *r)
{
u_int i;
for (i = 0; i < r->used; i++) {
if (r->ranges[i].nx != 0)
return (0);
}
return (1);
}
/* Ensure we have space for at least n ranges. */
void
server_client_ensure_ranges(struct visible_ranges *r, u_int n)
{
if (r->size >= n)
return;
r->ranges = xrecallocarray(r->ranges, r->size, n, sizeof *r->ranges);
r->size = n;
}
/*
* Given overlay position and dimensions, return parts of the input range which
* are visible.
@@ -169,22 +192,17 @@ void
server_client_overlay_range(u_int x, u_int y, u_int sx, u_int sy, u_int px,
u_int py, u_int nx, struct visible_ranges *r)
{
u_int ox, onx;
/* Caller must free when no longer used. */
if (r->size == 0) {
r->ranges = xcalloc(2, sizeof(struct visible_range));
r->size = 2;
r->used = 0;
}
u_int ox, onx;
/* Trivial case of no overlap in the y direction. */
if (py < y || py > y + sy - 1) {
server_client_ensure_ranges(r, 1);
r->ranges[0].px = px;
r->ranges[0].nx = nx;
r->used = 1;
return;
}
server_client_ensure_ranges(r, 2);
/* Visible bit to the left of the popup. */
if (px < x) {