mirror of https://github.com/tmux/tmux.git
124 lines
3.4 KiB
C
124 lines
3.4 KiB
C
/* $Id: resize.c,v 1.10 2008-06-01 20:32:41 nicm Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <string.h>
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#include "tmux.h"
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/*
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* Recalculate window and session sizes.
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*
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* Every session has the size of the smallest client it is attached to and
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* every window the size of the smallest session it is attached to.
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*
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* So, when a client is resized or a session attached to or detached from a
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* client, the window sizes must be recalculated. For each session, find the
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* smallest client it is attached to, and resize it to that size. Then for
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* every window, find the smallest session it is attached to, resize it to that
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* size and clear and redraw every client with it as the current window.
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*
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* This is quite inefficient - better/additional data structures are needed
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* to make it better.
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*
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* As a side effect, this function updates the SESSION_UNATTACHED flag. This
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* flag is necessary to make sure unattached sessions do not limit the size of
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* windows that are attached both to them and to other (attached) sessions.
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*/
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void
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recalculate_sizes(void)
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{
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struct session *s;
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struct client *c;
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struct window *w;
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u_int i, j, ssx, ssy;
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for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
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s = ARRAY_ITEM(&sessions, i);
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if (s == NULL)
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continue;
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ssx = ssy = UINT_MAX;
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for (j = 0; j < ARRAY_LENGTH(&clients); j++) {
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c = ARRAY_ITEM(&clients, j);
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if (c == NULL)
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continue;
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if (c->session == s) {
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if (c->sx < ssx)
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ssx = c->sx;
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if (c->sy < ssy)
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ssy = c->sy;
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}
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}
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if (ssx == UINT_MAX || ssy == UINT_MAX) {
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s->flags |= SESSION_UNATTACHED;
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continue;
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}
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s->flags &= ~SESSION_UNATTACHED;
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if (ssy < status_lines)
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ssy = status_lines + 1;
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ssy -= status_lines;
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if (s->sx == ssx && s->sy == ssy)
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continue;
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log_debug(
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"session size %u,%u (was %u,%u)", ssx, ssy, s->sx, s->sy);
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s->sx = ssx;
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s->sy = ssy;
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}
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for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
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w = ARRAY_ITEM(&windows, i);
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if (w == NULL)
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continue;
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ssx = ssy = UINT_MAX;
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for (j = 0; j < ARRAY_LENGTH(&sessions); j++) {
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s = ARRAY_ITEM(&sessions, j);
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if (s == NULL || s->flags & SESSION_UNATTACHED)
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continue;
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if (session_has(s, w)) {
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if (s->sx < ssx)
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ssx = s->sx;
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if (s->sy < ssy)
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ssy = s->sy;
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}
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}
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if (ssx == UINT_MAX || ssy == UINT_MAX) {
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w->flags |= WINDOW_HIDDEN;
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continue;
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}
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w->flags &= ~WINDOW_HIDDEN;
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if (screen_size_x(&w->base) == ssx &&
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screen_size_y(&w->base) == ssy)
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continue;
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log_debug("window size %u,%u (was %u,%u)", ssx, ssy,
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screen_size_x(&w->base), screen_size_y(&w->base));
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server_clear_window(w);
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window_resize(w, ssx, ssy);
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server_redraw_window(w);
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}
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}
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