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/* $OpenBSD: resize.c,v 1.19 2016/01/19 15:59:12 nicm Exp $ */ |
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/* |
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* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> |
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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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struct window_pane *wp; |
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u_int ssx, ssy, has, limit; |
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int flag, has_status, is_zoomed, forced; |
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RB_FOREACH(s, sessions, &sessions) { |
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has_status = options_get_number(s->options, "status"); |
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s->attached = 0; |
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ssx = ssy = UINT_MAX; |
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TAILQ_FOREACH(c, &clients, entry) { |
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if (c->flags & CLIENT_SUSPENDED) |
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continue; |
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if (c->session == s) { |
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if (c->tty.sx < ssx) |
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ssx = c->tty.sx; |
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if (has_status && |
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!(c->flags & CLIENT_CONTROL) && |
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c->tty.sy > 1 && c->tty.sy - 1 < ssy) |
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ssy = c->tty.sy - 1; |
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else if (c->tty.sy < ssy) |
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ssy = c->tty.sy; |
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s->attached++; |
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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 (has_status && ssy == 0) |
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ssy = 1; |
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if (s->sx == ssx && s->sy == ssy) |
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continue; |
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log_debug("session size %u,%u (was %u,%u)", ssx, ssy, s->sx, |
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s->sy); |
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s->sx = ssx; |
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s->sy = ssy; |
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} |
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RB_FOREACH(w, windows, &windows) { |
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if (w->active == NULL) |
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continue; |
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flag = options_get_number(w->options, "aggressive-resize"); |
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ssx = ssy = UINT_MAX; |
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RB_FOREACH(s, sessions, &sessions) { |
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if (s->flags & SESSION_UNATTACHED) |
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continue; |
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if (flag) |
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has = s->curw->window == w; |
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else |
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has = session_has(s, w); |
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if (has) { |
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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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continue; |
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forced = 0; |
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limit = options_get_number(w->options, "force-width"); |
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if (limit >= PANE_MINIMUM && ssx > limit) { |
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ssx = limit; |
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forced |= WINDOW_FORCEWIDTH; |
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} |
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limit = options_get_number(w->options, "force-height"); |
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if (limit >= PANE_MINIMUM && ssy > limit) { |
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ssy = limit; |
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forced |= WINDOW_FORCEHEIGHT; |
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} |
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if (w->sx == ssx && w->sy == ssy) |
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continue; |
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log_debug("window size %u,%u (was %u,%u)", ssx, ssy, w->sx, |
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w->sy); |
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w->flags &= ~(WINDOW_FORCEWIDTH|WINDOW_FORCEHEIGHT); |
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w->flags |= forced; |
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is_zoomed = w->flags & WINDOW_ZOOMED; |
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if (is_zoomed) |
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window_unzoom(w); |
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layout_resize(w, ssx, ssy); |
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window_resize(w, ssx, ssy); |
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if (is_zoomed && window_pane_visible(w->active)) |
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window_zoom(w->active); |
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/* |
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* If the current pane is now not visible, move to the next |
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* that is. |
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*/ |
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wp = w->active; |
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while (!window_pane_visible(w->active)) { |
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w->active = TAILQ_PREV(w->active, window_panes, entry); |
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if (w->active == NULL) |
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w->active = TAILQ_LAST(&w->panes, window_panes); |
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if (w->active == wp) |
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break; |
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} |
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server_redraw_window(w); |
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notify_window_layout_changed(w); |
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} |
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} |