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Fix problems with window sizing seen by Raghavendra D Prabhu when

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starting tmux from .xinitrc.

One of the very few things the server relies on the client for now is to
pass through a message on SIGWINCH, but there is a condition where
potentially a SIGWINCH may be lost during the transition from unattached
(main.c) to attached (client.c). So trigger a size change immediately
after the client installs its SIGWINCH handler.

Also, when the terminal is resized, reset the scroll region and cursor
position. Previously, we were clearing our saved idea of these, but in
fact some terminals do not reset them on resize, so this caused problems
during redraw.

While here make a resize to the same size not cause a redraw and rename
the tmux.out output log file to include the tmux PID.
This commit is contained in:
Nicholas Marriott 2010-06-05 16:47:11 +00:00
parent ceed5cc9a9
commit 510ec3fb9e
4 changed files with 41 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
client.c
View File

@ -175,6 +175,13 @@ client_main(void)
/* Set up signals. */
set_signals(client_signal);
/*
* Send a resize message immediately in case the terminal size has
* changed between the identify message to the server and the MSG_READY
* telling us to move into the client code.
*/
client_write_server(MSG_RESIZE, NULL, 0);
/*
* imsg_read in the first client poll loop (before the terminal has
* been initialised) may have read messages into the buffer after the

7
server-client.c
View File

@ -561,9 +561,10 @@ server_client_msg_dispatch(struct client *c)
if (datalen != 0)
fatalx("bad MSG_RESIZE size");
tty_resize(&c->tty);
recalculate_sizes();
server_redraw_client(c);
if (tty_resize(&c->tty)) {
recalculate_sizes();
server_redraw_client(c);
}
break;
case MSG_EXITING:
if (datalen != 0)

2
tmux.h
View File

@ -1351,7 +1351,7 @@ void tty_puts(struct tty *, const char *);
void tty_putc(struct tty *, u_char);
void tty_pututf8(struct tty *, const struct grid_utf8 *);
void tty_init(struct tty *, int, char *);
void tty_resize(struct tty *);
int tty_resize(struct tty *);
void tty_start_tty(struct tty *);
void tty_stop_tty(struct tty *);
void tty_set_title(struct tty *, const char *);

37
tty.c
View File

@ -73,34 +73,55 @@ tty_init(struct tty *tty, int fd, char *term)
tty->term_flags = 0;
}
void
int
tty_resize(struct tty *tty)
{
struct winsize ws;
u_int sx, sy;
if (ioctl(tty->fd, TIOCGWINSZ, &ws) != -1) {
tty->sx = ws.ws_col;
tty->sy = ws.ws_row;
sx = ws.ws_col;
if (sx == 0)
sx = 80;
sy = ws.ws_row;
if (sy == 0)
sy = 24;
} else {
sx = 80;
sy = 24;
}
if (tty->sx == 0)
tty->sx = 80;
if (tty->sy == 0)
tty->sy = 24;
if (sx == tty->sx && sy == tty->sy)
return (0);
tty->sx = sx;
tty->sy = sy;
tty->cx = UINT_MAX;
tty->cy = UINT_MAX;
tty->rupper = UINT_MAX;
tty->rlower = UINT_MAX;
/*
* If the terminal has been started, reset the actual scroll region and
* cursor position, as this may not have happened.
*/
if (tty->flags & TTY_STARTED) {
tty_cursor(tty, 0, 0);
tty_region(tty, 0, tty->sy - 1);
}
return (1);
}
int
tty_open(struct tty *tty, const char *overrides, char **cause)
{
char out[64];
int fd;
if (debug_level > 3) {
fd = open("tmux.out", O_WRONLY|O_CREAT|O_TRUNC, 0644);
xsnprintf(out, sizeof out, "tmux-out-%ld.log", (long) getpid());
fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644);
if (fd != -1 && fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)
fatal("fcntl failed");
tty->log_fd = fd;