circlecloud/tmux
1
0
Fork 0
mirror of https://github.com/tmux/tmux.git synced 2025-09-02 13:37:12 +00:00
Code Issues Projects Releases Wiki Activity

Make positions hidden by overlays range-based rather than character-based,

Browse Source 
from Anindya Mukherjee.
This commit is contained in:
nicm
2021-10-11 13:27:50 +00:00
parent 759efe1b33
commit b8581ec80e
6 changed files with 196 additions and 73 deletions
Download Patch File Download Diff File Expand all files Collapse all files

131
tty.c
View File

@ -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_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, py);
tty_repeat_space(tty, i);
for (; i < nx; i++) {
if (tty_check_overlay(tty, px + i, py))
break;
}
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;
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_putn(tty, ctx->ptr, i, i);
for (; i < ctx->num; i++) {
if (tty_check_overlay(tty, tty->cx + hide, tty->cy))
break;
hide++;
}
tty_cursor(tty, tty->cx + hide, tty->cy);
tty_putn(tty, (char *)ctx->ptr + i, ctx->num - i, ctx->num - i);
}
void