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/* $Id: window.c,v 1.147 2011/04/18 22:03:55 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* 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 <sys/ioctl.h>
#include <errno.h>
#include <fcntl.h>
#include <fnmatch.h>
#include <pwd.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "tmux.h"
/*
* Each window is attached to a number of panes, each of which is a pty. This
* file contains code to handle them.
*
* A pane has two buffers attached, these are filled and emptied by the main
* server poll loop. Output data is received from pty's in screen format,
* translated and returned as a series of escape sequences and strings via
* input_parse (in input.c). Input data is received as key codes and written
* directly via input_key.
*
* Each pane also has a "virtual" screen (screen.c) which contains the current
* state and is redisplayed when the window is reattached to a client.
*
* Windows are stored directly on a global array and wrapped in any number of
* winlink structs to be linked onto local session RB trees. A reference count
* is maintained and a window removed from the global list and destroyed when
* it reaches zero.
*/
/* Global window list. */
struct windows windows;
/* Global panes tree. */
struct window_pane_tree all_window_panes;
u_int next_window_pane;
void window_pane_read_callback(struct bufferevent *, void *);
void window_pane_error_callback(struct bufferevent *, short, void *);
RB_GENERATE(winlinks, winlink, entry, winlink_cmp);
int
winlink_cmp(struct winlink *wl1, struct winlink *wl2)
{
return (wl1->idx - wl2->idx);
}
RB_GENERATE(window_pane_tree, window_pane, tree_entry, window_pane_cmp);
int
window_pane_cmp(struct window_pane *wp1, struct window_pane *wp2)
{
return (wp1->id - wp2->id);
}
struct winlink *
winlink_find_by_window(struct winlinks *wwl, struct window *w)
{
struct winlink *wl;
RB_FOREACH(wl, winlinks, wwl) {
if (wl->window == w)
return (wl);
}
return (NULL);
}
struct winlink *
winlink_find_by_index(struct winlinks *wwl, int idx)
{
struct winlink wl;
if (idx < 0)
fatalx("bad index");
wl.idx = idx;
return (RB_FIND(winlinks, wwl, &wl));
}
int
winlink_next_index(struct winlinks *wwl, int idx)
{
int i;
i = idx;
do {
if (winlink_find_by_index(wwl, i) == NULL)
return (i);
if (i == INT_MAX)
i = 0;
else
i++;
} while (i != idx);
return (-1);
}
u_int
winlink_count(struct winlinks *wwl)
{
struct winlink *wl;
u_int n;
n = 0;
RB_FOREACH(wl, winlinks, wwl)
n++;
return (n);
}
struct winlink *
winlink_add(struct winlinks *wwl, int idx)
{
struct winlink *wl;
if (idx < 0) {
if ((idx = winlink_next_index(wwl, -idx - 1)) == -1)
return (NULL);
} else if (winlink_find_by_index(wwl, idx) != NULL)
return (NULL);
wl = xcalloc(1, sizeof *wl);
wl->idx = idx;
RB_INSERT(winlinks, wwl, wl);
return (wl);
}
void
winlink_set_window(struct winlink *wl, struct window *w)
{
wl->window = w;
w->references++;
}
void
winlink_remove(struct winlinks *wwl, struct winlink *wl)
{
struct window *w = wl->window;
RB_REMOVE(winlinks, wwl, wl);
if (wl->status_text != NULL)
xfree(wl->status_text);
xfree(wl);
if (w != NULL) {
if (w->references == 0)
fatal("bad reference count");
w->references--;
if (w->references == 0)
window_destroy(w);
}
}
struct winlink *
winlink_next(struct winlink *wl)
{
return (RB_NEXT(winlinks, wwl, wl));
}
struct winlink *
winlink_previous(struct winlink *wl)
{
return (RB_PREV(winlinks, wwl, wl));
}
struct winlink *
winlink_next_by_number(struct winlink *wl, struct session *s, int n)
{
for (; n > 0; n--) {
if ((wl = RB_NEXT(winlinks, wwl, wl)) == NULL)
wl = RB_MIN(winlinks, &s->windows);
}
return (wl);
}
struct winlink *
winlink_previous_by_number(struct winlink *wl, struct session *s, int n)
{
for (; n > 0; n--) {
if ((wl = RB_PREV(winlinks, wwl, wl)) == NULL)
wl = RB_MAX(winlinks, &s->windows);
}
return (wl);
}
void
winlink_stack_push(struct winlink_stack *stack, struct winlink *wl)
{
if (wl == NULL)
return;
winlink_stack_remove(stack, wl);
TAILQ_INSERT_HEAD(stack, wl, sentry);
}
void
winlink_stack_remove(struct winlink_stack *stack, struct winlink *wl)
{
struct winlink *wl2;
if (wl == NULL)
return;
TAILQ_FOREACH(wl2, stack, sentry) {
if (wl2 == wl) {
TAILQ_REMOVE(stack, wl, sentry);
return;
}
}
}
int
window_index(struct window *s, u_int *i)
{
for (*i = 0; *i < ARRAY_LENGTH(&windows); (*i)++) {
if (s == ARRAY_ITEM(&windows, *i))
return (0);
}
return (-1);
}
struct window *
window_create1(u_int sx, u_int sy)
{
struct window *w;
u_int i;
w = xcalloc(1, sizeof *w);
w->name = NULL;
w->flags = 0;
TAILQ_INIT(&w->panes);
w->active = NULL;
w->lastlayout = -1;
w->layout_root = NULL;
w->sx = sx;
w->sy = sy;
queue_window_name(w);
options_init(&w->options, &global_w_options);
for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
if (ARRAY_ITEM(&windows, i) == NULL) {
ARRAY_SET(&windows, i, w);
break;
}
}
if (i == ARRAY_LENGTH(&windows))
ARRAY_ADD(&windows, w);
w->references = 0;
return (w);
}
struct window *
window_create(const char *name, const char *cmd, const char *shell,
const char *cwd, struct environ *env, struct termios *tio,
u_int sx, u_int sy, u_int hlimit,char **cause)
{
struct window *w;
struct window_pane *wp;
w = window_create1(sx, sy);
wp = window_add_pane(w, hlimit);
layout_init(w);
if (window_pane_spawn(wp, cmd, shell, cwd, env, tio, cause) != 0) {
window_destroy(w);
return (NULL);
}
w->active = TAILQ_FIRST(&w->panes);
if (name != NULL) {
w->name = xstrdup(name);
options_set_number(&w->options, "automatic-rename", 0);
} else
w->name = default_window_name(w);
return (w);
}
void
window_destroy(struct window *w)
{
u_int i;
if (window_index(w, &i) != 0)
fatalx("index not found");
ARRAY_SET(&windows, i, NULL);
while (!ARRAY_EMPTY(&windows) && ARRAY_LAST(&windows) == NULL)
ARRAY_TRUNC(&windows, 1);
if (w->layout_root != NULL)
layout_free(w);
evtimer_del(&w->name_timer);
options_free(&w->options);
window_destroy_panes(w);
if (w->name != NULL)
xfree(w->name);
xfree(w);
}
void
window_resize(struct window *w, u_int sx, u_int sy)
{
w->sx = sx;
w->sy = sy;
}
void
window_set_active_pane(struct window *w, struct window_pane *wp)
{
if (wp == w->active)
return;
w->last = w->active;
w->active = wp;
while (!window_pane_visible(w->active)) {
w->active = TAILQ_PREV(w->active, window_panes, entry);
if (w->active == NULL)
w->active = TAILQ_LAST(&w->panes, window_panes);
if (w->active == wp)
return;
}
}
void
window_set_active_at(struct window *w, u_int x, u_int y)
{
struct window_pane *wp;
TAILQ_FOREACH(wp, &w->panes, entry) {
if (wp == w->active || !window_pane_visible(wp))
continue;
if (x < wp->xoff || x >= wp->xoff + wp->sx)
continue;
if (y < wp->yoff || y >= wp->yoff + wp->sy)
continue;
window_set_active_pane(w, wp);
break;
}
}
struct window_pane *
window_add_pane(struct window *w, u_int hlimit)
{
struct window_pane *wp;
wp = window_pane_create(w, w->sx, w->sy, hlimit);
if (TAILQ_EMPTY(&w->panes))
TAILQ_INSERT_HEAD(&w->panes, wp, entry);
else
TAILQ_INSERT_AFTER(&w->panes, w->active, wp, entry);
return (wp);
}
void
window_remove_pane(struct window *w, struct window_pane *wp)
{
if (wp == w->active) {
w->active = w->last;
w->last = NULL;
if (w->active == NULL) {
w->active = TAILQ_PREV(wp, window_panes, entry);
if (w->active == NULL)
w->active = TAILQ_NEXT(wp, entry);
}
} else if (wp == w->last)
w->last = NULL;
TAILQ_REMOVE(&w->panes, wp, entry);
window_pane_destroy(wp);
}
struct window_pane *
window_pane_at_index(struct window *w, u_int idx)
{
struct window_pane *wp;
u_int n;
n = 0;
TAILQ_FOREACH(wp, &w->panes, entry) {
if (n == idx)
return (wp);
n++;
}
return (NULL);
}
struct window_pane *
window_pane_next_by_number(struct window *w, struct window_pane *wp, u_int n)
{
for (; n > 0; n--) {
if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
wp = TAILQ_FIRST(&w->panes);
}
return (wp);
}
struct window_pane *
window_pane_previous_by_number(struct window *w, struct window_pane *wp,
u_int n)
{
for (; n > 0; n--) {
if ((wp = TAILQ_PREV(wp, window_panes, entry)) == NULL)
wp = TAILQ_LAST(&w->panes, window_panes);
}
return (wp);
}
u_int
window_pane_index(struct window *w, struct window_pane *wp)
{
struct window_pane *wq;
u_int n;
n = 0;
TAILQ_FOREACH(wq, &w->panes, entry) {
if (wp == wq)
break;
n++;
}
return (n);
}
u_int
window_count_panes(struct window *w)
{
struct window_pane *wp;
u_int n;
n = 0;
TAILQ_FOREACH(wp, &w->panes, entry)
n++;
return (n);
}
void
window_destroy_panes(struct window *w)
{
struct window_pane *wp;
while (!TAILQ_EMPTY(&w->panes)) {
wp = TAILQ_FIRST(&w->panes);
TAILQ_REMOVE(&w->panes, wp, entry);
window_pane_destroy(wp);
}
}
/* Return list of printable window flag symbols. No flags is just a space. */
char *
window_printable_flags(struct session *s, struct winlink *wl)
{
char flags[BUFSIZ];
int pos;
pos = 0;
if (wl->flags & WINLINK_ACTIVITY)
flags[pos++] = '#';
if (wl->flags & WINLINK_BELL)
flags[pos++] = '!';
if (wl->flags & WINLINK_CONTENT)
flags[pos++] = '+';
if (wl->flags & WINLINK_SILENCE)
flags[pos++] = '~';
if (wl == s->curw)
flags[pos++] = '*';
if (wl == TAILQ_FIRST(&s->lastw))
flags[pos++] = '-';
if (pos == 0)
flags[pos++] = ' ';
flags[pos] = '\0';
return (xstrdup(flags));
}
/* Find pane in global tree by id. */
struct window_pane *
window_pane_find_by_id(u_int id)
{
struct window_pane wp;
wp.id = id;
return (RB_FIND(window_pane_tree, &all_window_panes, &wp));
}
struct window_pane *
window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
{
struct window_pane *wp;
wp = xcalloc(1, sizeof *wp);
wp->window = w;
wp->id = next_window_pane++;
RB_INSERT(window_pane_tree, &all_window_panes, wp);
wp->cmd = NULL;
wp->shell = NULL;
wp->cwd = NULL;
wp->fd = -1;
wp->event = NULL;
wp->mode = NULL;
wp->layout_cell = NULL;
wp->xoff = 0;
wp->yoff = 0;
wp->sx = sx;
wp->sy = sy;
wp->pipe_fd = -1;
wp->pipe_off = 0;
wp->pipe_event = NULL;
wp->saved_grid = NULL;
screen_init(&wp->base, sx, sy, hlimit);
wp->screen = &wp->base;
input_init(wp);
return (wp);
}
void
window_pane_destroy(struct window_pane *wp)
{
window_pane_reset_mode(wp);
if (wp->fd != -1) {
close(wp->fd);
bufferevent_free(wp->event);
}
input_free(wp);
screen_free(&wp->base);
if (wp->saved_grid != NULL)
grid_destroy(wp->saved_grid);
if (wp->pipe_fd != -1) {
close(wp->pipe_fd);
bufferevent_free(wp->pipe_event);
}
RB_REMOVE(window_pane_tree, &all_window_panes, wp);
if (wp->cwd != NULL)
xfree(wp->cwd);
if (wp->shell != NULL)
xfree(wp->shell);
if (wp->cmd != NULL)
xfree(wp->cmd);
xfree(wp);
}
int
window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
const char *cwd, struct environ *env, struct termios *tio, char **cause)
{
struct winsize ws;
char *argv0, paneid[16];
const char *ptr;
struct termios tio2;
if (wp->fd != -1) {
close(wp->fd);
bufferevent_free(wp->event);
}
if (cmd != NULL) {
if (wp->cmd != NULL)
xfree(wp->cmd);
wp->cmd = xstrdup(cmd);
}
if (shell != NULL) {
if (wp->shell != NULL)
xfree(wp->shell);
wp->shell = xstrdup(shell);
}
if (cwd != NULL) {
if (wp->cwd != NULL)
xfree(wp->cwd);
wp->cwd = xstrdup(cwd);
}
memset(&ws, 0, sizeof ws);
ws.ws_col = screen_size_x(&wp->base);
ws.ws_row = screen_size_y(&wp->base);
switch (wp->pid = forkpty(&wp->fd, wp->tty, NULL, &ws)) {
case -1:
wp->fd = -1;
xasprintf(cause, "%s: %s", cmd, strerror(errno));
return (-1);
case 0:
if (chdir(wp->cwd) != 0)
chdir("/");
if (tcgetattr(STDIN_FILENO, &tio2) != 0)
fatal("tcgetattr failed");
if (tio != NULL)
memcpy(tio2.c_cc, tio->c_cc, sizeof tio2.c_cc);
tio2.c_cc[VERASE] = '\177';
if (tcsetattr(STDIN_FILENO, TCSANOW, &tio2) != 0)
fatal("tcgetattr failed");
closefrom(STDERR_FILENO + 1);
xsnprintf(paneid, sizeof paneid, "%%%u", wp->id);
environ_set(env, "TMUX_PANE", paneid);
environ_push(env);
clear_signals(1);
log_close();
if (*wp->cmd != '\0') {
/* Set SHELL but only if it is currently not useful. */
shell = getenv("SHELL");
if (shell == NULL || *shell == '\0' || areshell(shell))
setenv("SHELL", wp->shell, 1);
execl(_PATH_BSHELL, "sh", "-c", wp->cmd, (char *) NULL);
fatal("execl failed");
}
/* No command; fork a login shell. */
ptr = strrchr(wp->shell, '/');
if (ptr != NULL && *(ptr + 1) != '\0')
xasprintf(&argv0, "-%s", ptr + 1);
else
xasprintf(&argv0, "-%s", wp->shell);
setenv("SHELL", wp->shell, 1);
execl(wp->shell, argv0, (char *) NULL);
fatal("execl failed");
}
setblocking(wp->fd, 0);
wp->event = bufferevent_new(wp->fd,
window_pane_read_callback, NULL, window_pane_error_callback, wp);
bufferevent_enable(wp->event, EV_READ|EV_WRITE);
return (0);
}
/* ARGSUSED */
void
window_pane_read_callback(unused struct bufferevent *bufev, void *data)
{
struct window_pane *wp = data;
char *new_data;
size_t new_size;
new_size = EVBUFFER_LENGTH(wp->event->input) - wp->pipe_off;
if (wp->pipe_fd != -1 && new_size > 0) {
new_data = EVBUFFER_DATA(wp->event->input);
bufferevent_write(wp->pipe_event, new_data, new_size);
}
input_parse(wp);
wp->pipe_off = EVBUFFER_LENGTH(wp->event->input);
/*
* If we get here, we're not outputting anymore, so set the silence
* flag on the window.
*/
wp->window->flags |= WINDOW_SILENCE;
if (gettimeofday(&wp->window->silence_timer, NULL) != 0)
fatal("gettimeofday failed.");
}
/* ARGSUSED */
void
window_pane_error_callback(
unused struct bufferevent *bufev, unused short what, void *data)
{
struct window_pane *wp = data;
server_destroy_pane(wp);
}
void
window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
{
struct winsize ws;
if (sx == wp->sx && sy == wp->sy)
return;
wp->sx = sx;
wp->sy = sy;
memset(&ws, 0, sizeof ws);
ws.ws_col = sx;
ws.ws_row = sy;
screen_resize(&wp->base, sx, sy);
if (wp->mode != NULL)
wp->mode->resize(wp, sx, sy);
if (wp->fd != -1 && ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
#ifdef __sun
/*
* Some versions of Solaris apparently can return an error when
* resizing; don't know why this happens, can't reproduce on
* other platforms and ignoring it doesn't seem to cause any
* issues.
*/
if (errno != EINVAL)
#endif
fatal("ioctl failed");
}
/*
* Enter alternative screen mode. A copy of the visible screen is saved and the
* history is not updated
*/
void
window_pane_alternate_on(struct window_pane *wp, struct grid_cell *gc)
{
struct screen *s = &wp->base;
u_int sx, sy;
if (wp->saved_grid != NULL)
return;
if (!options_get_number(&wp->window->options, "alternate-screen"))
return;
sx = screen_size_x(s);
sy = screen_size_y(s);
wp->saved_grid = grid_create(sx, sy, 0);
grid_duplicate_lines(wp->saved_grid, 0, s->grid, screen_hsize(s), sy);
wp->saved_cx = s->cx;
wp->saved_cy = s->cy;
memcpy(&wp->saved_cell, gc, sizeof wp->saved_cell);
grid_view_clear(s->grid, 0, 0, sx, sy);
wp->base.grid->flags &= ~GRID_HISTORY;
wp->flags |= PANE_REDRAW;
}
/* Exit alternate screen mode and restore the copied grid. */
void
window_pane_alternate_off(struct window_pane *wp, struct grid_cell *gc)
{
struct screen *s = &wp->base;
u_int sx, sy;
if (wp->saved_grid == NULL)
return;
if (!options_get_number(&wp->window->options, "alternate-screen"))
return;
sx = screen_size_x(s);
sy = screen_size_y(s);
/*
* If the current size is bigger, temporarily resize to the old size
* before copying back.
*/
if (sy > wp->saved_grid->sy)
screen_resize(s, sx, wp->saved_grid->sy);
/* Restore the grid, cursor position and cell. */
grid_duplicate_lines(s->grid, screen_hsize(s), wp->saved_grid, 0, sy);
s->cx = wp->saved_cx;
if (s->cx > screen_size_x(s) - 1)
s->cx = screen_size_x(s) - 1;
s->cy = wp->saved_cy;
if (s->cy > screen_size_y(s) - 1)
s->cy = screen_size_y(s) - 1;
memcpy(gc, &wp->saved_cell, sizeof *gc);
/*
* Turn history back on (so resize can use it) and then resize back to
* the current size.
*/
wp->base.grid->flags |= GRID_HISTORY;
if (sy > wp->saved_grid->sy)
screen_resize(s, sx, sy);
grid_destroy(wp->saved_grid);
wp->saved_grid = NULL;
wp->flags |= PANE_REDRAW;
}
int
window_pane_set_mode(struct window_pane *wp, const struct window_mode *mode)
{
struct screen *s;
if (wp->mode != NULL)
return (1);
wp->mode = mode;
if ((s = wp->mode->init(wp)) != NULL)
wp->screen = s;
wp->flags |= PANE_REDRAW;
return (0);
}
void
window_pane_reset_mode(struct window_pane *wp)
{
if (wp->mode == NULL)
return;
wp->mode->free(wp);
wp->mode = NULL;
wp->screen = &wp->base;
wp->flags |= PANE_REDRAW;
}
void
window_pane_key(struct window_pane *wp, struct session *sess, int key)
{
struct window_pane *wp2;
if (!window_pane_visible(wp))
return;
if (wp->mode != NULL) {
if (wp->mode->key != NULL)
wp->mode->key(wp, sess, key);
return;
}
if (wp->fd == -1)
return;
input_key(wp, key);
if (options_get_number(&wp->window->options, "synchronize-panes")) {
TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
if (wp2 == wp || wp2->mode != NULL)
continue;
if (wp2->fd != -1 && window_pane_visible(wp2))
input_key(wp2, key);
}
}
}
void
window_pane_mouse(
struct window_pane *wp, struct session *sess, struct mouse_event *m)
{
if (!window_pane_visible(wp))
return;
if (m->x < wp->xoff || m->x >= wp->xoff + wp->sx)
return;
if (m->y < wp->yoff || m->y >= wp->yoff + wp->sy)
return;
m->x -= wp->xoff;
m->y -= wp->yoff;
if (wp->mode != NULL) {
if (wp->mode->mouse != NULL &&
options_get_number(&wp->window->options, "mode-mouse"))
wp->mode->mouse(wp, sess, m);
} else if (wp->fd != -1)
input_mouse(wp, m);
}
int
window_pane_visible(struct window_pane *wp)
{
struct window *w = wp->window;
if (wp->xoff >= w->sx || wp->yoff >= w->sy)
return (0);
if (wp->xoff + wp->sx > w->sx || wp->yoff + wp->sy > w->sy)
return (0);
return (1);
}
char *
window_pane_search(struct window_pane *wp, const char *searchstr, u_int *lineno)
{
struct screen *s = &wp->base;
char *newsearchstr, *line, *msg;
u_int i;
msg = NULL;
xasprintf(&newsearchstr, "*%s*", searchstr);
for (i = 0; i < screen_size_y(s); i++) {
line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
if (fnmatch(newsearchstr, line, 0) == 0) {
msg = line;
if (lineno != NULL)
*lineno = i;
break;
}
xfree(line);
}
xfree(newsearchstr);
return (msg);
}
/* Find the pane directly above another. */
struct window_pane *
window_pane_find_up(struct window_pane *wp)
{
struct window_pane *wp2;
u_int left, top;
if (wp == NULL || !window_pane_visible(wp))
return (NULL);
top = wp->yoff;
if (top == 0)
top = wp->window->sy + 1;
left = wp->xoff;
TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
if (!window_pane_visible(wp2))
continue;
if (wp2->yoff + wp2->sy + 1 != top)
continue;
if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
return (wp2);
}
return (NULL);
}
/* Find the pane directly below another. */
struct window_pane *
window_pane_find_down(struct window_pane *wp)
{
struct window_pane *wp2;
u_int left, bottom;
if (wp == NULL || !window_pane_visible(wp))
return (NULL);
bottom = wp->yoff + wp->sy + 1;
if (bottom >= wp->window->sy)
bottom = 0;
left = wp->xoff;
TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
if (!window_pane_visible(wp2))
continue;
if (wp2->yoff != bottom)
continue;
if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
return (wp2);
}
return (NULL);
}
/*
* Find the pane directly to the left of another, adjacent to the left side and
* containing the top edge.
*/
struct window_pane *
window_pane_find_left(struct window_pane *wp)
{
struct window_pane *wp2;
u_int left, top;
if (wp == NULL || !window_pane_visible(wp))
return (NULL);
left = wp->xoff;
if (left == 0)
left = wp->window->sx + 1;
top = wp->yoff;
TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
if (!window_pane_visible(wp2))
continue;
if (wp2->xoff + wp2->sx + 1 != left)
continue;
if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
return (wp2);
}
return (NULL);
}
/*
* Find the pane directly to the right of another, that is adjacent to the
* right edge and including the top edge.
*/
struct window_pane *
window_pane_find_right(struct window_pane *wp)
{
struct window_pane *wp2;
u_int right, top;
if (wp == NULL || !window_pane_visible(wp))
return (NULL);
right = wp->xoff + wp->sx + 1;
if (right >= wp->window->sx)
right = 0;
top = wp->yoff;
TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
if (!window_pane_visible(wp2))
continue;
if (wp2->xoff != right)
continue;
if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
return (wp2);
}
return (NULL);
}
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