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/* $Id: resize.c,v 1.6 2007/11/21 13:11:41 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 <string.h>
#include "tmux.h"
/*
* Recalculate window and session sizes.
*
* Every session has the size of the smallest client it is attached to and
* every window the size of the smallest session it is attached to.
*
* So, when a client is resized or a session attached to or detached from a
* client, the window sizes must be recalculated. For each session, find the
* smallest client it is attached to, and resize it to that size. Then for
* every window, find the smallest session it is attached to, resize it to that
* size and clear and redraw every client with it as the current window.
*
* This is quite inefficient - better/additional data structures are needed
* to make it better.
*
* As a side effect, this function updates the SESSION_UNATTACHED flag. This
* flag is necessary to make sure unattached sessions do not limit the size of
* windows that are attached both to them and to other sessions which are
* attached.
*/
void
recalculate_sizes(void)
{
struct session *s;
struct client *c;
struct window *w;
u_int i, j, ssx, ssy;
for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
s = ARRAY_ITEM(&sessions, i);
if (s == NULL)
continue;
ssx = ssy = UINT_MAX;
for (j = 0; j < ARRAY_LENGTH(&clients); j++) {
c = ARRAY_ITEM(&clients, j);
if (c == NULL)
continue;
if (c->session == s) {
if (c->sx < ssx)
ssx = c->sx;
if (c->sy < ssy)
ssy = c->sy;
}
}
if (ssx == UINT_MAX || ssy == UINT_MAX) {
s->flags |= SESSION_UNATTACHED;
continue;
}
s->flags &= ~SESSION_UNATTACHED;
if (ssy < status_lines)
ssy = status_lines + 1;
ssy -= status_lines;
if (s->sx == ssx && s->sy == ssy)
continue;
log_debug(
"session size %u,%u (was %u,%u)", ssx, ssy, s->sx, s->sy);
s->sx = ssx;
s->sy = ssy;
}
for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
w = ARRAY_ITEM(&windows, i);
if (w == NULL)
continue;
ssx = ssy = UINT_MAX;
for (j = 0; j < ARRAY_LENGTH(&sessions); j++) {
s = ARRAY_ITEM(&sessions, j);
if (s == NULL || s->flags & SESSION_UNATTACHED)
continue;
if (session_has(s, w)) {
if (s->sx < ssx)
ssx = s->sx;
if (s->sy < ssy)
ssy = s->sy;
}
}
if (ssx == UINT_MAX || ssy == UINT_MAX) {
w->screen.mode |= MODE_HIDDEN;
continue;
}
w->screen.mode &= ~MODE_HIDDEN;
if (screen_size_x(&w->screen) == ssx &&
screen_size_y(&w->screen) == ssy)
continue;
log_debug("window size %u,%u (was %u,%u)", ssx, ssy,
screen_size_x(&w->screen), screen_size_y(&w->screen));
server_clear_window_cur(w);
window_resize(w, ssx, ssy);
server_redraw_window_cur(w);
}
}