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Some applications like vi(1) and tmux until 10 minutes or so ago, do not

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redraw on SIGWINCH if the size returns to the original size between the
original SIGWINCH and when they get around to calling TIOCGWINSZ. So use
the existing resize timer to introduce a small delay between the two
resizes.
This commit is contained in:
nicm
2017-05-31 11:00:00 +00:00
parent ea6428a5d2
commit d60663ea86
2 changed files with 44 additions and 22 deletions
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59
server-client.c
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@ -1038,6 +1038,44 @@ server_client_loop(void)
}
}
/* Check if we need to force a resize. */
static int
server_client_resize_force(struct window_pane *wp)
{
struct timeval tv = { .tv_usec = 100000 };
struct winsize ws;
/*
* If we are resizing to the same size as when we entered the loop
* (that is, to the same size the application currently thinks it is),
* tmux may have gone through several resizes internally and thrown
* away parts of the screen. So we need the application to actually
* redraw even though its final size has not changed.
*/
if (wp->flags & PANE_RESIZEFORCE) {
wp->flags &= ~PANE_RESIZEFORCE;
return (0);
}
if (wp->sx != wp->osx ||
wp->sy != wp->osy ||
wp->sx <= 1 ||
wp->sy <= 1)
return (0);
memset(&ws, 0, sizeof ws);
ws.ws_col = wp->sx;
ws.ws_row = wp->sy - 1;
if (ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
fatal("ioctl failed");
log_debug("%s: %%%u forcing resize", __func__, wp->id);
evtimer_add(&wp->resize_timer, &tv);
wp->flags |= PANE_RESIZEFORCE;
return (1);
}
/* Resize timer event. */
static void
server_client_resize_event(__unused int fd, __unused short events, void *data)
@ -1049,25 +1087,8 @@ server_client_resize_event(__unused int fd, __unused short events, void *data)
if (!(wp->flags & PANE_RESIZE))
return;
/*
* If we are resizing to the same size as when we entered the loop
* (that is, to the same size the application currently thinks it is),
* tmux may have gone through several resizes internally and thrown
* away parts of the screen. So we need the application to actually
* redraw even though its final size has not changed.
*/
if (wp->sx == wp->osx &&
wp->sy == wp->osy &&
wp->sx > 1 &&
wp->sy > 1) {
memset(&ws, 0, sizeof ws);
ws.ws_col = wp->sx - 1;
ws.ws_row = wp->sy - 1;
if (ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
fatal("ioctl failed");
log_debug("%s: %%%u forcing resize", __func__, wp->id);
}
if (server_client_resize_force(wp))
return;
memset(&ws, 0, sizeof ws);
ws.ws_col = wp->sx;