1 /* $Id: resize.c,v 1.1.1.2 2011/08/17 18:40:05 jmmv Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net> 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 i, j, ssx, ssy, has, limit; 53 int flag; 54 55 RB_FOREACH(s, sessions, &sessions) { 56 ssx = ssy = UINT_MAX; 57 for (j = 0; j < ARRAY_LENGTH(&clients); j++) { 58 c = ARRAY_ITEM(&clients, j); 59 if (c == NULL || c->flags & CLIENT_SUSPENDED) 60 continue; 61 if (c->session == s) { 62 if (c->tty.sx < ssx) 63 ssx = c->tty.sx; 64 if (c->tty.sy < ssy) 65 ssy = c->tty.sy; 66 } 67 } 68 if (ssx == UINT_MAX || ssy == UINT_MAX) { 69 s->flags |= SESSION_UNATTACHED; 70 continue; 71 } 72 s->flags &= ~SESSION_UNATTACHED; 73 74 if (options_get_number(&s->options, "status")) { 75 if (ssy == 0) 76 ssy = 1; 77 else 78 ssy--; 79 } 80 if (s->sx == ssx && s->sy == ssy) 81 continue; 82 83 log_debug( 84 "session size %u,%u (was %u,%u)", ssx, ssy, s->sx, s->sy); 85 86 s->sx = ssx; 87 s->sy = ssy; 88 } 89 90 for (i = 0; i < ARRAY_LENGTH(&windows); i++) { 91 w = ARRAY_ITEM(&windows, i); 92 if (w == NULL) 93 continue; 94 flag = options_get_number(&w->options, "aggressive-resize"); 95 96 ssx = ssy = UINT_MAX; 97 RB_FOREACH(s, sessions, &sessions) { 98 if (s->flags & SESSION_UNATTACHED) 99 continue; 100 if (flag) 101 has = s->curw->window == w; 102 else 103 has = session_has(s, w) != NULL; 104 if (has) { 105 if (s->sx < ssx) 106 ssx = s->sx; 107 if (s->sy < ssy) 108 ssy = s->sy; 109 } 110 } 111 if (ssx == UINT_MAX || ssy == UINT_MAX) 112 continue; 113 114 limit = options_get_number(&w->options, "force-width"); 115 if (limit != 0 && ssx > limit) 116 ssx = limit; 117 limit = options_get_number(&w->options, "force-height"); 118 if (limit != 0 && ssy > limit) 119 ssy = limit; 120 121 if (w->sx == ssx && w->sy == ssy) 122 continue; 123 124 log_debug( 125 "window size %u,%u (was %u,%u)", ssx, ssy, w->sx, w->sy); 126 127 layout_resize(w, ssx, ssy); 128 window_resize(w, ssx, ssy); 129 130 /* 131 * If the current pane is now not visible, move to the next 132 * that is. 133 */ 134 wp = w->active; 135 while (!window_pane_visible(w->active)) { 136 w->active = TAILQ_PREV(w->active, window_panes, entry); 137 if (w->active == NULL) 138 w->active = TAILQ_LAST(&w->panes, window_panes); 139 if (w->active == wp) 140 break; 141 } 142 143 server_redraw_window(w); 144 } 145 } 146