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Rename the visible ranges functions since they really relate to windows

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and put them nto a new file.
This commit is contained in:
nicm
2026-06-16 10:47:35 +00:00
parent 4b772fd783
commit 9ad75e1dc3
7 changed files with 251 additions and 229 deletions
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1
Makefile
View File

@@ -130,6 +130,7 @@ SRCS= alerts.c \
window-clock.c \ window-clock.c \
window-copy.c \ window-copy.c \
window-customize.c \ window-customize.c \
window-visible.c \
window-tree.c \ window-tree.c \
window.c \ window.c \
xmalloc.c xmalloc.c

5
cmd-display-panes.c
View File

@@ -65,8 +65,7 @@ cmd_display_panes_put(struct screen_redraw_ctx *ctx,
struct visible_range *ri; struct visible_range *ri;
u_int i, j; u_int i, j;
r = screen_redraw_get_visible_ranges(wp, ctx->ox + cx, ctx->oy + cy, r = window_visible_ranges(wp, ctx->ox + cx, ctx->oy + cy, len, NULL);
len, NULL);
for (i = 0; i < r->used; i++) { for (i = 0; i < r->used; i++) {
ri = &r->ranges[i]; ri = &r->ranges[i];
for (j = ri->px; j < ri->px + ri->nx; j++) { for (j = ri->px; j < ri->px + ri->nx; j++) {
@@ -103,7 +102,7 @@ cmd_display_panes_draw_format(struct screen_redraw_ctx *ctx,
screen_write_stop(&sctx); screen_write_stop(&sctx);
free(expanded); free(expanded);
r = screen_redraw_get_visible_ranges(wp, px, wp->yoff, sx, NULL); r = window_visible_ranges(wp, px, wp->yoff, sx, NULL);
for (i = 0; i < r->used; i++) { for (i = 0; i < r->used; i++) {
ri = &r->ranges[i]; ri = &r->ranges[i];
tty_draw_line(tty, &screen, ri->px - px, 0, ri->nx, tty_draw_line(tty, &screen, ri->px - px, 0, ri->nx,

207
screen-redraw.c
View File

@@ -734,7 +734,7 @@ screen_redraw_draw_pane_status(struct screen_redraw_ctx *ctx)
} }
r = tty_check_overlay_range(tty, x, yoff, width); r = tty_check_overlay_range(tty, x, yoff, width);
r = screen_redraw_get_visible_ranges(wp, x, yoff, width, r); r = window_visible_ranges(wp, x, yoff, width, r);
if (ctx->statustop) if (ctx->statustop)
yoff += ctx->statuslines; yoff += ctx->statuslines;
for (i = 0; i < r->used; i++) { for (i = 0; i < r->used; i++) {
@@ -1125,205 +1125,6 @@ screen_redraw_draw_status(struct screen_redraw_ctx *ctx)
tty_draw_line(tty, s, 0, i, UINT_MAX, 0, y + i, NULL); tty_draw_line(tty, s, 0, i, UINT_MAX, 0, y + i, NULL);
} }
/*
* Check if a single character is within a visible range (not obscured by a
* floating pane).
*/
int
screen_redraw_is_visible(struct visible_ranges *r, u_int px)
{
u_int i;
struct visible_range *ri;
if (r == NULL)
return (1);
for (i = 0; i < r->used; i++) {
ri = &r->ranges[i];
if (ri->nx != 0 && px >= ri->px && px < ri->px + ri->nx)
return (1);
}
return (0);
}
/*
* Construct ranges array for the line at starting at px,py of width cells of
* base_wp that are unobsructed. All ranges are in window coordinates.
*/
struct visible_ranges *
screen_redraw_get_visible_ranges(struct window_pane *base_wp, int px,
int py, u_int width, struct visible_ranges *r)
{
struct window_pane *wp;
struct window *w;
struct visible_range *ri;
static struct visible_ranges sr = { NULL, 0, 0 };
int found_self, sb, sb_w, sb_pos, no_border;
int lb, rb, tb, bb, sx, ex;
u_int i, s;
if (py < 0 || width == 0)
goto empty;
if (px < 0) {
if ((u_int)-px >= width)
goto empty;
width -= (u_int)-px;
px = 0;
}
if (base_wp == NULL) {
if (r != NULL)
return (r);
if (sr.ranges == NULL)
sr.ranges = xcalloc(1, sizeof *sr.ranges);
sr.ranges[0].px = px;
sr.ranges[0].nx = width;
sr.size = 1;
sr.used = 1;
return (&sr);
}
w = base_wp->window;
if ((u_int)py >= w->sy)
goto empty;
if (px + width > w->sx)
width = w->sx - px;
if (r == NULL) {
/* Start with the entire width of the range. */
server_client_ensure_ranges(&base_wp->r, 1);
r = &base_wp->r;
r->ranges[0].px = px;
r->ranges[0].nx = width;
r->used = 1;
}
sb = options_get_number(w->options, "pane-scrollbars");
sb_pos = options_get_number(w->options, "pane-scrollbars-position");
found_self = 0;
TAILQ_FOREACH_REVERSE(wp, &w->z_index, window_panes_zindex, zentry) {
if (wp == base_wp) {
found_self = 1;
continue;
}
if (window_pane_is_floating(wp) &&
window_pane_get_pane_lines(wp) == PANE_LINES_NONE)
no_border = 1;
else
no_border = 0;
if (no_border) {
tb = wp->yoff;
bb = wp->yoff + (int)wp->sy - 1;
} else {
tb = wp->yoff > 0 ? wp->yoff - 1 : 0;
bb = wp->yoff + (int)wp->sy;
}
if (!found_self ||
!window_pane_is_visible(wp) ||
py < tb ||
py > bb)
continue;
if (!window_pane_is_floating(wp) && (py == tb || py == bb))
continue;
sb_w = wp->scrollbar_style.width + wp->scrollbar_style.pad;
if (!window_pane_show_scrollbar(wp, sb))
sb_w = sb_pos = 0;
for (i = 0; i < r->used; i++) {
ri = &r->ranges[i];
if (no_border) {
lb = wp->xoff;
rb = wp->xoff + (int)wp->sx - 1;
} else if (sb_pos == PANE_SCROLLBARS_LEFT) {
if (wp->xoff > sb_w)
lb = wp->xoff - 1 - sb_w;
else
lb = 0;
} else { /* PANE_SCROLLBARS_RIGHT or none. */
if (wp->xoff > 0)
lb = wp->xoff - 1;
else
lb = 0;
}
if (!no_border) {
if (sb_pos == PANE_SCROLLBARS_LEFT)
rb = wp->xoff + (int)wp->sx;
else /* PANE_SCROLLBARS_RIGHT or none. */
rb = wp->xoff + (int)wp->sx + sb_w;
}
if (lb < 0)
lb = 0;
if (rb < 0)
continue;
if (no_border && rb >= (int)w->sx)
rb = w->sx - 1;
else if (!no_border && rb > (int)w->sx)
rb = w->sx - 1;
sx = ri->px;
ex = sx + ri->nx - 1;
if (lb > sx && lb <= ex && rb > ex) {
/*
* If the left edge of floating pane falls
* inside this range and right edge covers up
* to right of range, then shrink left edge of
* range.
*/
ri->nx = lb - sx;
} else if (rb >= sx && rb <= ex && lb <= sx) {
/*
* Else if the right edge of floating pane falls
* inside of this range and left edge covers
* the left of range, then move px forward to
* right edge of pane.
*/
ri->nx = ex - rb;
ri->px = rb + 1;
} else if (lb > sx && rb <= ex) {
/*
* Else if pane fully inside range then split
* into 2 ranges.
*/
server_client_ensure_ranges(r, r->used + 1);
for (s = r->used; s > i; s--) {
memcpy(&r->ranges[s], &r->ranges[s - 1],
sizeof *r->ranges);
}
ri = &r->ranges[i];
r->ranges[i + 1].px = rb + 1;
r->ranges[i + 1].nx = ex - rb;
/* ri->px was copied, unchanged. */
ri->nx = lb - sx;
r->used++;
} else if (lb <= sx && rb > ex) {
/*
* If floating pane completely covers this range
* then delete it (make it 0 length).
*/
ri->nx = 0;
} else {
/*
* The range is already obscured, do
* nothing.
*/
}
}
}
return (r);
empty:
if (r == NULL) {
if (sr.ranges == NULL)
sr.ranges = xcalloc(1, sizeof *sr.ranges);
sr.size = 1;
sr.used = 0;
return (&sr);
}
r->used = 0;
return (r);
}
/* Draw one pane. */ /* Draw one pane. */
static void static void
@@ -1418,7 +1219,7 @@ screen_redraw_draw_pane(struct screen_redraw_ctx *ctx, struct window_pane *wp)
/* Get visible ranges of line before we draw it. */ /* Get visible ranges of line before we draw it. */
r = tty_check_overlay_range(tty, wx, wy, width); r = tty_check_overlay_range(tty, wx, wy, width);
r = screen_redraw_get_visible_ranges(wp, wx, wy, width, r); r = window_visible_ranges(wp, wx, wy, width, r);
for (k = 0; k < r->used; k++) { for (k = 0; k < r->used; k++) {
ri = &r->ranges[k]; ri = &r->ranges[k];
if (ri->nx == 0) if (ri->nx == 0)
@@ -1588,7 +1389,7 @@ screen_redraw_draw_scrollbar(struct screen_redraw_ctx *ctx,
wy = sb_wy + j; /* window y coordinate */ wy = sb_wy + j; /* window y coordinate */
py = sb_tty_y + j; /* tty y coordinate */ py = sb_tty_y + j; /* tty y coordinate */
r = tty_check_overlay_range(tty, sb_x, wy, imax); r = tty_check_overlay_range(tty, sb_x, wy, imax);
r = screen_redraw_get_visible_ranges(wp, sb_x, wy, imax, r); r = window_visible_ranges(wp, sb_x, wy, imax, r);
for (i = imin; i < imax; i++) { for (i = imin; i < imax; i++) {
px = sb_x + ox + i; /* tty x coordinate */ px = sb_x + ox + i; /* tty x coordinate */
wx = sb_x + i; /* window x coordinate */ wx = sb_x + i; /* window x coordinate */
@@ -1596,7 +1397,7 @@ screen_redraw_draw_scrollbar(struct screen_redraw_ctx *ctx,
px >= sx || px < 0 || px >= sx || px < 0 ||
wy < yoff - 1 || wy < yoff - 1 ||
py >= sy || py < 0 || py >= sy || py < 0 ||
!screen_redraw_is_visible(r, wx)) !window_position_is_visible(r, wx))
continue; continue;
tty_cursor(tty, px, py); tty_cursor(tty, px, py);
if ((sb_pos == PANE_SCROLLBARS_LEFT && if ((sb_pos == PANE_SCROLLBARS_LEFT &&

31
screen-write.c
View File

@@ -644,8 +644,8 @@ screen_write_fast_copy(struct screen_write_ctx *ctx, struct screen *src,
break; break;
s->cx = cx; s->cx = cx;
screen_write_initctx(ctx, &ttyctx, 0, 0); screen_write_initctx(ctx, &ttyctx, 0, 0);
r = screen_redraw_get_visible_ranges(wp, xoff + s->cx, r = window_visible_ranges(wp, xoff + s->cx, s->cy + yoff, nx,
s->cy + yoff, nx, NULL); NULL);
for (xx = px; xx < px + nx; xx++) { for (xx = px; xx < px + nx; xx++) {
gl = grid_get_line(gd, yy); gl = grid_get_line(gd, yy);
sgl = grid_get_line(s->grid, s->cy); sgl = grid_get_line(s->grid, s->cy);
@@ -657,7 +657,7 @@ screen_write_fast_copy(struct screen_write_ctx *ctx, struct screen *src,
break; break;
grid_view_set_cell(s->grid, s->cx, s->cy, &gc); grid_view_set_cell(s->grid, s->cx, s->cy, &gc);
if (!screen_redraw_is_visible(r, xoff + s->cx)) if (!window_position_is_visible(r, xoff + s->cx))
break; break;
ttyctx.cell = &gc; ttyctx.cell = &gc;
ttyctx.flags &= (TTY_CTX_OVERLAY_SYNC|TTY_CTX_SYNC); ttyctx.flags &= (TTY_CTX_OVERLAY_SYNC|TTY_CTX_SYNC);
@@ -1162,7 +1162,7 @@ screen_write_redraw_line(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx,
if (s->mode & MODE_SYNC) if (s->mode & MODE_SYNC)
return; return;
r = screen_redraw_get_visible_ranges(wp, xoff, yoff + yy, sx, NULL); r = window_visible_ranges(wp, xoff, yoff + yy, sx, NULL);
for (i = 0; i < r->used; i++) { for (i = 0; i < r->used; i++) {
ri = &r->ranges[i]; ri = &r->ranges[i];
if (ri->nx == 0) if (ri->nx == 0)
@@ -1774,8 +1774,8 @@ screen_write_clearendofscreen(struct screen_write_ctx *ctx, u_int bg)
/* First line (containing the cursor). */ /* First line (containing the cursor). */
if (s->cx <= sx - 1) { if (s->cx <= sx - 1) {
r = screen_redraw_get_visible_ranges(ctx->wp, xoff + s->cx, r = window_visible_ranges(ctx->wp, xoff + s->cx, yoff + s->cy,
yoff + s->cy, sx - s->cx, NULL); sx - s->cx, NULL);
for (i = 0; i < r->used; i++) { for (i = 0; i < r->used; i++) {
ri = &r->ranges[i]; ri = &r->ranges[i];
if (ri->nx == 0) if (ri->nx == 0)
@@ -1788,8 +1788,7 @@ screen_write_clearendofscreen(struct screen_write_ctx *ctx, u_int bg)
/* Below cursor to bottom. */ /* Below cursor to bottom. */
for (y = s->cy + 1; y < sy; y++) { for (y = s->cy + 1; y < sy; y++) {
screen_write_set_cursor(ctx, 0, y); screen_write_set_cursor(ctx, 0, y);
r = screen_redraw_get_visible_ranges(ctx->wp, xoff, yoff + y, r = window_visible_ranges(ctx->wp, xoff, yoff + y, sx, NULL);
sx, NULL);
for (i = 0; i < r->used; i++) { for (i = 0; i < r->used; i++) {
ri = &r->ranges[i]; ri = &r->ranges[i];
if (ri->nx == 0) if (ri->nx == 0)
@@ -1846,8 +1845,7 @@ screen_write_clearstartofscreen(struct screen_write_ctx *ctx, u_int bg)
/* Top to above the cursor. */ /* Top to above the cursor. */
for (y = 0; y < s->cy; y++) { for (y = 0; y < s->cy; y++) {
screen_write_set_cursor(ctx, 0, y); screen_write_set_cursor(ctx, 0, y);
r = screen_redraw_get_visible_ranges(ctx->wp, xoff, yoff + y, r = window_visible_ranges(ctx->wp, xoff, yoff + y, sx, NULL);
sx, NULL);
for (i = 0; i < r->used; i++) { for (i = 0; i < r->used; i++) {
ri = &r->ranges[i]; ri = &r->ranges[i];
if (ri->nx == 0) if (ri->nx == 0)
@@ -1859,8 +1857,7 @@ screen_write_clearstartofscreen(struct screen_write_ctx *ctx, u_int bg)
/* Last line (containing the cursor). */ /* Last line (containing the cursor). */
screen_write_set_cursor(ctx, 0, s->cy); screen_write_set_cursor(ctx, 0, s->cy);
r = screen_redraw_get_visible_ranges(ctx->wp, xoff, yoff + ocy, r = window_visible_ranges(ctx->wp, xoff, yoff + ocy, s->cx + 1, NULL);
s->cx + 1, NULL);
for (i = 0; i < r->used; i++) { for (i = 0; i < r->used; i++) {
ri = &r->ranges[i]; ri = &r->ranges[i];
if (ri->nx == 0) if (ri->nx == 0)
@@ -1916,8 +1913,7 @@ screen_write_clearscreen(struct screen_write_ctx *ctx, u_int bg)
/* Clear every line. */ /* Clear every line. */
for (y = 0; y < sy; y++) { for (y = 0; y < sy; y++) {
screen_write_set_cursor(ctx, 0, y); screen_write_set_cursor(ctx, 0, y);
r = screen_redraw_get_visible_ranges(ctx->wp, xoff, yoff + y, r = window_visible_ranges(ctx->wp, xoff, yoff + y, sx, NULL);
sx, NULL);
for (i = 0; i < r->used; i++) { for (i = 0; i < r->used; i++) {
ri = &r->ranges[i]; ri = &r->ranges[i];
if (ri->nx == 0) if (ri->nx == 0)
@@ -2138,7 +2134,7 @@ screen_write_collect_flush_line(struct screen_write_ctx *ctx, u_int y)
if (y + yoff >= wsy) if (y + yoff >= wsy)
return (0); return (0);
r = screen_redraw_get_visible_ranges(wp, 0, y + yoff, wsx, NULL); r = window_visible_ranges(wp, 0, y + yoff, wsx, NULL);
TAILQ_FOREACH_SAFE(ci, &cl->items, entry, tmp) { TAILQ_FOREACH_SAFE(ci, &cl->items, entry, tmp) {
log_debug("collect list: x=%u (last %u), y=%u, used=%u", ci->x, log_debug("collect list: x=%u (last %u), y=%u, used=%u", ci->x,
last, y, ci->used); last, y, ci->used);
@@ -2528,8 +2524,7 @@ screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
xoff = wp->xoff; xoff = wp->xoff;
yoff = wp->yoff; yoff = wp->yoff;
} }
r = screen_redraw_get_visible_ranges(wp, xoff + s->cx, s->cy + yoff, r = window_visible_ranges(wp, xoff + s->cx, s->cy + yoff, width, NULL);
width, NULL);
/* /*
* Move the cursor. If not wrapping, stick at the last character and * Move the cursor. If not wrapping, stick at the last character and
@@ -2701,7 +2696,7 @@ screen_write_combine(struct screen_write_ctx *ctx, const struct grid_cell *gc)
*/ */
if (wp != NULL) if (wp != NULL)
yoff = wp->yoff; yoff = wp->yoff;
r = screen_redraw_get_visible_ranges(wp, cx - n, cy + yoff, n, NULL); r = window_visible_ranges(wp, cx - n, cy + yoff, n, NULL);
for (i = 0, vis = 0; i < r->used; i++) for (i = 0, vis = 0; i < r->used; i++)
vis += r->ranges[i].nx; vis += r->ranges[i].nx;
if (vis < n) { if (vis < n) {

4
server-client.c
View File

@@ -1851,8 +1851,8 @@ server_client_reset_state(struct client *c)
cx = wp->xoff + (int)s->cx - (int)ox; cx = wp->xoff + (int)s->cx - (int)ox;
cy = wp->yoff + (int)s->cy - (int)oy; cy = wp->yoff + (int)s->cy - (int)oy;
r = screen_redraw_get_visible_ranges(wp, cx, cy, 1, NULL); r = window_visible_ranges(wp, cx, cy, 1, NULL);
if (!screen_redraw_is_visible(r, cx)) if (!window_position_is_visible(r, cx))
cursor = 0; cursor = 0;
if (status_at_line(c) == 0) if (status_at_line(c) == 0)

8
tmux.h
View File

@@ -3339,9 +3339,6 @@ void screen_write_alternateoff(struct screen_write_ctx *,
/* screen-redraw.c */ /* screen-redraw.c */
void screen_redraw_screen(struct client *); void screen_redraw_screen(struct client *);
void screen_redraw_pane(struct client *, struct window_pane *, int); void screen_redraw_pane(struct client *, struct window_pane *, int);
int screen_redraw_is_visible(struct visible_ranges *, u_int);
struct visible_ranges *screen_redraw_get_visible_ranges(struct window_pane *,
int, int, u_int, struct visible_ranges *);
/* screen.c */ /* screen.c */
void screen_init(struct screen *, u_int, u_int, u_int); void screen_init(struct screen *, u_int, u_int, u_int);
@@ -3489,6 +3486,11 @@ struct style_range *window_pane_status_get_range(struct window_pane *, u_int,
u_int); u_int);
int window_pane_is_floating(struct window_pane *); int window_pane_is_floating(struct window_pane *);
/* window-visible.c */
int window_position_is_visible(struct visible_ranges *, u_int);
struct visible_ranges *window_visible_ranges(struct window_pane *, int, int,
u_int, struct visible_ranges *);
/* layout.c */ /* layout.c */
u_int layout_count_cells(struct layout_cell *); u_int layout_count_cells(struct layout_cell *);
struct layout_cell *layout_create_cell(struct layout_cell *); struct layout_cell *layout_create_cell(struct layout_cell *);

224
window-visible.c Normal file
View File

@@ -0,0 +1,224 @@
/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* Check if a single character is within a visible range (not obscured by a
* floating pane).
*/
int
window_position_is_visible(struct visible_ranges *r, u_int px)
{
u_int i;
struct visible_range *ri;
if (r == NULL)
return (1);
for (i = 0; i < r->used; i++) {
ri = &r->ranges[i];
if (ri->nx != 0 && px >= ri->px && px < ri->px + ri->nx)
return (1);
}
return (0);
}
/*
* Construct ranges array for the line at starting at px,py of width cells of
* base_wp that are unobsructed. All ranges are in window coordinates.
*/
struct visible_ranges *
window_visible_ranges(struct window_pane *base_wp, int px, int py, u_int width,
struct visible_ranges *r)
{
struct window_pane *wp;
struct window *w;
struct visible_range *ri;
static struct visible_ranges sr = { NULL, 0, 0 };
int found_self, sb, sb_w, sb_pos;
int lb, rb, tb, bb, sx, ex, no_border;
u_int i, s;
if (py < 0 || width == 0)
goto empty;
if (px < 0) {
if ((u_int)-px >= width)
goto empty;
width -= (u_int)-px;
px = 0;
}
if (base_wp == NULL) {
if (r != NULL)
return (r);
if (sr.ranges == NULL)
sr.ranges = xcalloc(1, sizeof *sr.ranges);
sr.ranges[0].px = px;
sr.ranges[0].nx = width;
sr.size = 1;
sr.used = 1;
return (&sr);
}
w = base_wp->window;
if ((u_int)py >= w->sy)
goto empty;
if (px + width > w->sx)
width = w->sx - px;
if (r == NULL) {
/* Start with the entire width of the range. */
server_client_ensure_ranges(&base_wp->r, 1);
r = &base_wp->r;
r->ranges[0].px = px;
r->ranges[0].nx = width;
r->used = 1;
}
sb = options_get_number(w->options, "pane-scrollbars");
sb_pos = options_get_number(w->options, "pane-scrollbars-position");
found_self = 0;
TAILQ_FOREACH_REVERSE(wp, &w->z_index, window_panes_zindex, zentry) {
if (wp == base_wp) {
found_self = 1;
continue;
}
if (window_pane_is_floating(wp) &&
window_pane_get_pane_lines(wp) == PANE_LINES_NONE)
no_border = 1;
else
no_border = 0;
if (no_border) {
tb = wp->yoff;
bb = wp->yoff + (int)wp->sy - 1;
} else {
tb = wp->yoff > 0 ? wp->yoff - 1 : 0;
bb = wp->yoff + (int)wp->sy;
}
if (!found_self ||
!window_pane_is_visible(wp) ||
py < tb ||
py > bb)
continue;
if (!window_pane_is_floating(wp) && (py == tb || py == bb))
continue;
sb_w = wp->scrollbar_style.width + wp->scrollbar_style.pad;
if (!window_pane_show_scrollbar(wp, sb))
sb_w = sb_pos = 0;
for (i = 0; i < r->used; i++) {
ri = &r->ranges[i];
if (no_border) {
lb = wp->xoff;
rb = wp->xoff + (int)wp->sx - 1;
} else if (sb_pos == PANE_SCROLLBARS_LEFT) {
if (wp->xoff > sb_w)
lb = wp->xoff - 1 - sb_w;
else
lb = 0;
} else { /* PANE_SCROLLBARS_RIGHT or none. */
if (wp->xoff > 0)
lb = wp->xoff - 1;
else
lb = 0;
}
if (!no_border) {
if (sb_pos == PANE_SCROLLBARS_LEFT)
rb = wp->xoff + (int)wp->sx;
else /* PANE_SCROLLBARS_RIGHT or none. */
rb = wp->xoff + (int)wp->sx + sb_w;
}
if (lb < 0)
lb = 0;
if (rb < 0)
continue;
if (no_border && rb >= (int)w->sx)
rb = w->sx - 1;
else if (!no_border && rb > (int)w->sx)
rb = w->sx - 1;
sx = ri->px;
ex = sx + ri->nx - 1;
if (lb > sx && lb <= ex && rb > ex) {
/*
* If the left edge of floating pane falls
* inside this range and right edge covers up
* to right of range, then shrink left edge of
* range.
*/
ri->nx = lb - sx;
} else if (rb >= sx && rb <= ex && lb <= sx) {
/*
* Else if the right edge of floating pane falls
* inside of this range and left edge covers
* the left of range, then move px forward to
* right edge of pane.
*/
ri->nx = ex - rb;
ri->px = rb + 1;
} else if (lb > sx && rb <= ex) {
/*
* Else if pane fully inside range then split
* into 2 ranges.
*/
server_client_ensure_ranges(r, r->used + 1);
for (s = r->used; s > i; s--) {
memcpy(&r->ranges[s], &r->ranges[s - 1],
sizeof *r->ranges);
}
ri = &r->ranges[i];
r->ranges[i + 1].px = rb + 1;
r->ranges[i + 1].nx = ex - rb;
/* ri->px was copied, unchanged. */
ri->nx = lb - sx;
r->used++;
} else if (lb <= sx && rb > ex) {
/*
* If floating pane completely covers this range
* then delete it (make it 0 length).
*/
ri->nx = 0;
} else {
/*
* The range is already obscured, do
* nothing.
*/
}
}
}
return (r);
empty:
if (r == NULL) {
if (sr.ranges == NULL)
sr.ranges = xcalloc(1, sizeof *sr.ranges);
sr.size = 1;
sr.used = 0;
return (&sr);
}
r->used = 0;
return (r);
}