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fb53a63 @kfebert Imported Upstream version 1.3
kfebert authored
1 /* $Id: resize.c,v 1.25 2010/06/22 23:26:18 tcunha Exp $ */
8fade26 Imported Upstream version 1.1
Karl Ferdinand Ebert authored
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 for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
56 s = ARRAY_ITEM(&sessions, i);
57 if (s == NULL)
58 continue;
59
60 ssx = ssy = UINT_MAX;
61 for (j = 0; j < ARRAY_LENGTH(&clients); j++) {
62 c = ARRAY_ITEM(&clients, j);
63 if (c == NULL || c->flags & CLIENT_SUSPENDED)
64 continue;
65 if (c->session == s) {
66 if (c->tty.sx < ssx)
67 ssx = c->tty.sx;
68 if (c->tty.sy < ssy)
69 ssy = c->tty.sy;
70 }
71 }
72 if (ssx == UINT_MAX || ssy == UINT_MAX) {
73 s->flags |= SESSION_UNATTACHED;
74 continue;
75 }
76 s->flags &= ~SESSION_UNATTACHED;
77
78 if (options_get_number(&s->options, "status")) {
79 if (ssy == 0)
80 ssy = 1;
81 else
82 ssy--;
83 }
84 if (s->sx == ssx && s->sy == ssy)
85 continue;
86
87 log_debug(
88 "session size %u,%u (was %u,%u)", ssx, ssy, s->sx, s->sy);
89
90 s->sx = ssx;
91 s->sy = ssy;
92 }
93
94 for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
95 w = ARRAY_ITEM(&windows, i);
96 if (w == NULL)
97 continue;
98 flag = options_get_number(&w->options, "aggressive-resize");
99
100 ssx = ssy = UINT_MAX;
101 for (j = 0; j < ARRAY_LENGTH(&sessions); j++) {
102 s = ARRAY_ITEM(&sessions, j);
103 if (s == NULL || s->flags & SESSION_UNATTACHED)
104 continue;
105 if (flag)
106 has = s->curw->window == w;
107 else
fb53a63 @kfebert Imported Upstream version 1.3
kfebert authored
108 has = session_has(s, w) != NULL;
8fade26 Imported Upstream version 1.1
Karl Ferdinand Ebert authored
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 w->flags |= WINDOW_HIDDEN;
118 continue;
119 }
120 w->flags &= ~WINDOW_HIDDEN;
121
122 limit = options_get_number(&w->options, "force-width");
123 if (limit != 0 && ssx > limit)
124 ssx = limit;
125 limit = options_get_number(&w->options, "force-height");
126 if (limit != 0 && ssy > limit)
127 ssy = limit;
128
129 if (w->sx == ssx && w->sy == ssy)
130 continue;
131
132 log_debug(
133 "window size %u,%u (was %u,%u)", ssx, ssy, w->sx, w->sy);
134
135 layout_resize(w, ssx, ssy);
136 window_resize(w, ssx, ssy);
137
138 /*
139 * If the current pane is now not visible, move to the next
140 * that is.
141 */
142 wp = w->active;
143 while (!window_pane_visible(w->active)) {
144 w->active = TAILQ_PREV(w->active, window_panes, entry);
145 if (w->active == NULL)
146 w->active = TAILQ_LAST(&w->panes, window_panes);
147 if (w->active == wp)
148 break;
149 }
150
151 server_redraw_window(w);
152 }
153 }
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