Return to resize.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / tmux

tmux 2.4

    1: /* $OpenBSD$ */
    2: 
    3: /*
    4:  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
    5:  *
    6:  * Permission to use, copy, modify, and distribute this software for any
    7:  * purpose with or without fee is hereby granted, provided that the above
    8:  * copyright notice and this permission notice appear in all copies.
    9:  *
   10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   14:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
   15:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
   16:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   17:  */
   18: 
   19: #include <sys/types.h>
   20: 
   21: #include <string.h>
   22: 
   23: #include "tmux.h"
   24: 
   25: /*
   26:  * Recalculate window and session sizes.
   27:  *
   28:  * Every session has the size of the smallest client it is attached to and
   29:  * every window the size of the smallest session it is attached to.
   30:  *
   31:  * So, when a client is resized or a session attached to or detached from a
   32:  * client, the window sizes must be recalculated. For each session, find the
   33:  * smallest client it is attached to, and resize it to that size. Then for
   34:  * every window, find the smallest session it is attached to, resize it to that
   35:  * size and clear and redraw every client with it as the current window.
   36:  *
   37:  * This is quite inefficient - better/additional data structures are needed
   38:  * to make it better.
   39:  *
   40:  * As a side effect, this function updates the SESSION_UNATTACHED flag. This
   41:  * flag is necessary to make sure unattached sessions do not limit the size of
   42:  * windows that are attached both to them and to other (attached) sessions.
   43:  */
   44: 
   45: void
   46: recalculate_sizes(void)
   47: {
   48: 	struct session		*s;
   49: 	struct client		*c;
   50: 	struct window		*w;
   51: 	struct window_pane	*wp;
   52: 	u_int			 ssx, ssy, has, limit;
   53: 	int			 flag, has_status, is_zoomed, forced;
   54: 
   55: 	RB_FOREACH(s, sessions, &sessions) {
   56: 		has_status = options_get_number(s->options, "status");
   57: 
   58: 		s->attached = 0;
   59: 		ssx = ssy = UINT_MAX;
   60: 		TAILQ_FOREACH(c, &clients, entry) {
   61: 			if (c->flags & CLIENT_SUSPENDED)
   62: 				continue;
   63: 			if (c->session == s) {
   64: 				if (c->tty.sx < ssx)
   65: 					ssx = c->tty.sx;
   66: 				if (has_status &&
   67: 				    !(c->flags & CLIENT_CONTROL) &&
   68: 				    c->tty.sy > 1 && c->tty.sy - 1 < ssy)
   69: 					ssy = c->tty.sy - 1;
   70: 				else if (c->tty.sy < ssy)
   71: 					ssy = c->tty.sy;
   72: 				s->attached++;
   73: 			}
   74: 		}
   75: 		if (ssx == UINT_MAX || ssy == UINT_MAX) {
   76: 			s->flags |= SESSION_UNATTACHED;
   77: 			continue;
   78: 		}
   79: 		s->flags &= ~SESSION_UNATTACHED;
   80: 
   81: 		if (has_status && ssy == 0)
   82: 			ssy = 1;
   83: 
   84: 		if (s->sx == ssx && s->sy == ssy)
   85: 			continue;
   86: 
   87: 		log_debug("session $%u size %u,%u (was %u,%u)", s->id, ssx, ssy,
   88: 		    s->sx, s->sy);
   89: 
   90: 		s->sx = ssx;
   91: 		s->sy = ssy;
   92: 
   93: 		status_update_saved(s);
   94: 	}
   95: 
   96: 	RB_FOREACH(w, windows, &windows) {
   97: 		if (w->active == NULL)
   98: 			continue;
   99: 		flag = options_get_number(w->options, "aggressive-resize");
  100: 
  101: 		ssx = ssy = UINT_MAX;
  102: 		RB_FOREACH(s, sessions, &sessions) {
  103: 			if (s->flags & SESSION_UNATTACHED)
  104: 				continue;
  105: 			if (flag)
  106: 				has = s->curw->window == w;
  107: 			else
  108: 				has = session_has(s, w);
  109: 			if (has) {
  110: 				if (s->sx < ssx)
  111: 					ssx = s->sx;
  112: 				if (s->sy < ssy)
  113: 					ssy = s->sy;
  114: 			}
  115: 		}
  116: 		if (ssx == UINT_MAX || ssy == UINT_MAX)
  117: 			continue;
  118: 
  119: 		forced = 0;
  120: 		limit = options_get_number(w->options, "force-width");
  121: 		if (limit >= PANE_MINIMUM && ssx > limit) {
  122: 			ssx = limit;
  123: 			forced |= WINDOW_FORCEWIDTH;
  124: 		}
  125: 		limit = options_get_number(w->options, "force-height");
  126: 		if (limit >= PANE_MINIMUM && ssy > limit) {
  127: 			ssy = limit;
  128: 			forced |= WINDOW_FORCEHEIGHT;
  129: 		}
  130: 
  131: 		if (w->sx == ssx && w->sy == ssy)
  132: 			continue;
  133: 		log_debug("window @%u size %u,%u (was %u,%u)", w->id, ssx, ssy,
  134: 		    w->sx, w->sy);
  135: 
  136: 		w->flags &= ~(WINDOW_FORCEWIDTH|WINDOW_FORCEHEIGHT);
  137: 		w->flags |= forced;
  138: 
  139: 		is_zoomed = w->flags & WINDOW_ZOOMED;
  140: 		if (is_zoomed)
  141: 			window_unzoom(w);
  142: 		layout_resize(w, ssx, ssy);
  143: 		window_resize(w, ssx, ssy);
  144: 		if (is_zoomed && window_pane_visible(w->active))
  145: 			window_zoom(w->active);
  146: 
  147: 		/*
  148: 		 * If the current pane is now not visible, move to the next
  149: 		 * that is.
  150: 		 */
  151: 		wp = w->active;
  152: 		while (!window_pane_visible(w->active)) {
  153: 			w->active = TAILQ_PREV(w->active, window_panes, entry);
  154: 			if (w->active == NULL)
  155: 				w->active = TAILQ_LAST(&w->panes, window_panes);
  156: 			if (w->active == wp)
  157: 			       break;
  158: 		}
  159: 
  160: 		server_redraw_window(w);
  161: 		notify_window("window-layout-changed", w);
  162: 	}
  163: }