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Diffstat (limited to 'usr.bin/tmux/tty.c')
-rw-r--r--usr.bin/tmux/tty.c133
1 files changed, 82 insertions, 51 deletions
diff --git a/usr.bin/tmux/tty.c b/usr.bin/tmux/tty.c
index 9426448acda..6a6b883d3e9 100644
--- a/usr.bin/tmux/tty.c
+++ b/usr.bin/tmux/tty.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tty.c,v 1.405 2021/10/06 10:33:12 nicm Exp $ */
+/* $OpenBSD: tty.c,v 1.406 2021/10/11 13:27:50 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -71,6 +71,8 @@ static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int);
static void tty_default_attributes(struct tty *, const struct grid_cell *,
struct colour_palette *, u_int);
static int tty_check_overlay(struct tty *, u_int, u_int);
+static void tty_check_overlay_range(struct tty *, u_int, u_int, u_int,
+ struct overlay_ranges *);
#define tty_use_margin(tty) \
(tty->term->flags & TERM_DECSLRM)
@@ -1046,8 +1048,9 @@ static void
tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py,
u_int px, u_int nx, u_int bg)
{
- struct client *c = tty->client;
- u_int i;
+ struct client *c = tty->client;
+ struct overlay_ranges r;
+ u_int i;
log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
@@ -1083,18 +1086,13 @@ tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py,
* Couldn't use an escape sequence, use spaces. Clear only the visible
* bit if there is an overlay.
*/
- for (i = 0; i < nx; i++) {
- if (!tty_check_overlay(tty, px + i, py))
- break;
- }
- tty_cursor(tty, px, py);
- tty_repeat_space(tty, i);
- for (; i < nx; i++) {
- if (tty_check_overlay(tty, px + i, py))
- break;
+ tty_check_overlay_range(tty, px, py, nx, &r);
+ for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
+ if (r.nx[i] == 0)
+ continue;
+ tty_cursor(tty, r.px[i], py);
+ tty_repeat_space(tty, r.nx[i]);
}
- tty_cursor(tty, px + i, py);
- tty_repeat_space(tty, nx - i);
}
/* Clear a line, adjusting to visible part of pane. */
@@ -1306,14 +1304,44 @@ tty_check_codeset(struct tty *tty, const struct grid_cell *gc)
return (&new);
}
+/*
+ * Check if a single character is obstructed by the overlay and return a
+ * boolean.
+ */
static int
tty_check_overlay(struct tty *tty, u_int px, u_int py)
{
+ struct overlay_ranges r;
+
+ /*
+ * A unit width range will always return nx[2] == 0 from a check, even
+ * with multiple overlays, so it's sufficient to check just the first
+ * two entries.
+ */
+ tty_check_overlay_range(tty, px, py, 1, &r);
+ if (r.nx[0] + r.nx[1] == 0)
+ return (0);
+ return (1);
+}
+
+/* Return parts of the input range which are visible. */
+static void
+tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx,
+ struct overlay_ranges *r)
+{
struct client *c = tty->client;
- if (c->overlay_check == NULL)
- return (1);
- return (c->overlay_check(c, c->overlay_data, px, py));
+ if (c->overlay_check == NULL) {
+ r->px[0] = px;
+ r->nx[0] = nx;
+ r->px[1] = 0;
+ r->nx[1] = 0;
+ r->px[2] = 0;
+ r->nx[2] = 0;
+ return;
+ }
+
+ c->overlay_check(c, c->overlay_data, px, py, nx, r);
}
void
@@ -1326,11 +1354,12 @@ tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx,
const struct grid_cell *gcp;
struct grid_line *gl;
struct client *c = tty->client;
- u_int i, j, ux, sx, width, hidden;
+ struct overlay_ranges r;
+ u_int i, j, ux, sx, width, hidden, eux, nxx;
+ u_int cellsize;
int flags, cleared = 0, wrapped = 0;
char buf[512];
size_t len;
- u_int cellsize;
log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__,
px, py, nx, atx, aty);
@@ -1430,29 +1459,31 @@ tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx,
else
memcpy(&last, gcp, sizeof last);
+ tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width,
+ &r);
hidden = 0;
- for (j = 0; j < gcp->data.width; j++) {
- if (!tty_check_overlay(tty, atx + ux + j, aty))
- hidden++;
- }
+ for (j = 0; j < OVERLAY_MAX_RANGES; j++)
+ hidden += r.nx[j];
+ hidden = gcp->data.width - hidden;
if (hidden != 0 && hidden == gcp->data.width) {
if (~gcp->flags & GRID_FLAG_PADDING)
ux += gcp->data.width;
} else if (hidden != 0 || ux + gcp->data.width > nx) {
if (~gcp->flags & GRID_FLAG_PADDING) {
tty_attributes(tty, &last, defaults, palette);
- tty_cursor(tty, atx + ux, aty);
- for (j = 0; j < gcp->data.width; j++) {
- if (ux > nx)
- break;
- if (tty_check_overlay(tty, atx + ux,
- aty))
- tty_putc(tty, ' ');
- else {
- tty_cursor(tty, atx + ux + 1,
- aty);
+ for (j = 0; j < OVERLAY_MAX_RANGES; j++) {
+ if (r.nx[j] == 0)
+ continue;
+ /* Effective width drawn so far. */
+ eux = r.px[j] - atx;
+ if (eux < nx) {
+ tty_cursor(tty, r.px[j], aty);
+ nxx = nx - eux;
+ if (r.nx[j] > nxx)
+ r.nx[j] = nxx;
+ tty_repeat_space(tty, r.nx[j]);
+ ux = eux + r.nx[j];
}
- ux++;
}
}
} else if (gcp->attr & GRID_ATTR_CHARSET) {
@@ -1926,7 +1957,8 @@ tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
{
const struct grid_cell *gcp = ctx->cell;
struct screen *s = ctx->s;
- u_int i, px, py;
+ struct overlay_ranges r;
+ u_int px, py, i, vis = 0;
px = ctx->xoff + ctx->ocx - ctx->wox;
py = ctx->yoff + ctx->ocy - ctx->woy;
@@ -1936,13 +1968,14 @@ tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
/* Handle partially obstructed wide characters. */
if (gcp->data.width > 1) {
- for (i = 0; i < gcp->data.width; i++) {
- if (!tty_check_overlay(tty, px + i, py)) {
- tty_draw_line(tty, s, s->cx, s->cy,
+ tty_check_overlay_range(tty, px, py, gcp->data.width, &r);
+ for (i = 0; i < OVERLAY_MAX_RANGES; i++)
+ vis += r.nx[i];
+ if (vis < gcp->data.width) {
+ tty_draw_line(tty, s, s->cx, s->cy,
gcp->data.width, px, py, &ctx->defaults,
ctx->palette);
return;
- }
}
}
@@ -1960,7 +1993,8 @@ tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
void
tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
{
- u_int i, hide = 0;
+ struct overlay_ranges r;
+ u_int i, px;
if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1))
return;
@@ -1985,18 +2019,15 @@ tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette);
- for (i = 0; i < ctx->num; i++) {
- if (!tty_check_overlay(tty, tty->cx + i, tty->cy))
- break;
- }
- tty_putn(tty, ctx->ptr, i, i);
- for (; i < ctx->num; i++) {
- if (tty_check_overlay(tty, tty->cx + hide, tty->cy))
- break;
- hide++;
+ px = tty->cx;
+ tty_check_overlay_range(tty, px, tty->cy, ctx->num, &r);
+ for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
+ if (r.nx[i] == 0)
+ continue;
+ tty_cursor(tty, r.px[i], tty->cy);
+ tty_putn(tty, (char *)ctx->ptr + r.px[i] - px, r.nx[i],
+ r.nx[i]);
}
- tty_cursor(tty, tty->cx + hide, tty->cy);
- tty_putn(tty, (char *)ctx->ptr + i, ctx->num - i, ctx->num - i);
}
void
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 18:11:00 +0000