Annotation of src/usr.bin/tmux/resize.c, Revision 1.12
1.12 ! nicm 1: /* $OpenBSD: resize.c,v 1.11 2013/10/10 11:46:00 nicm Exp $ */
1.1 nicm 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;
1.2 nicm 51: struct window_pane *wp;
1.9 nicm 52: u_int i, j, ssx, ssy, has, limit;
1.10 nicm 53: int flag, has_status, is_zoomed;
1.1 nicm 54:
1.7 nicm 55: RB_FOREACH(s, sessions, &sessions) {
1.9 nicm 56: has_status = options_get_number(&s->options, "status");
57:
1.12 ! nicm 58: s->attached = 0;
1.1 nicm 59: ssx = ssy = UINT_MAX;
60: for (j = 0; j < ARRAY_LENGTH(&clients); j++) {
61: c = ARRAY_ITEM(&clients, j);
1.4 nicm 62: if (c == NULL || c->flags & CLIENT_SUSPENDED)
1.1 nicm 63: continue;
64: if (c->session == s) {
65: if (c->tty.sx < ssx)
66: ssx = c->tty.sx;
1.9 nicm 67: if (has_status &&
68: !(c->flags & CLIENT_CONTROL) &&
69: c->tty.sy > 1 && c->tty.sy - 1 < ssy)
70: ssy = c->tty.sy - 1;
71: else if (c->tty.sy < ssy)
1.1 nicm 72: ssy = c->tty.sy;
1.12 ! nicm 73: s->attached++;
1.1 nicm 74: }
75: }
76: if (ssx == UINT_MAX || ssy == UINT_MAX) {
77: s->flags |= SESSION_UNATTACHED;
78: continue;
79: }
80: s->flags &= ~SESSION_UNATTACHED;
81:
1.9 nicm 82: if (has_status && ssy == 0)
83: ssy = 1;
84:
1.1 nicm 85: if (s->sx == ssx && s->sy == ssy)
86: continue;
87:
1.9 nicm 88: log_debug("session size %u,%u (was %u,%u)", ssx, ssy, s->sx,
89: s->sy);
1.1 nicm 90:
91: s->sx = ssx;
92: s->sy = ssy;
93: }
94:
95: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
96: w = ARRAY_ITEM(&windows, i);
1.11 nicm 97: if (w == NULL || w->active == NULL)
1.1 nicm 98: continue;
99: flag = options_get_number(&w->options, "aggressive-resize");
100:
101: ssx = ssy = UINT_MAX;
1.7 nicm 102: RB_FOREACH(s, sessions, &sessions) {
103: if (s->flags & SESSION_UNATTACHED)
1.1 nicm 104: continue;
105: if (flag)
106: has = s->curw->window == w;
107: else
1.5 nicm 108: has = session_has(s, w) != NULL;
1.1 nicm 109: if (has) {
110: if (s->sx < ssx)
111: ssx = s->sx;
112: if (s->sy < ssy)
113: ssy = s->sy;
114: }
115: }
1.6 nicm 116: if (ssx == UINT_MAX || ssy == UINT_MAX)
1.1 nicm 117: continue;
118:
119: limit = options_get_number(&w->options, "force-width");
120: if (limit != 0 && ssx > limit)
121: ssx = limit;
122: limit = options_get_number(&w->options, "force-height");
123: if (limit != 0 && ssy > limit)
124: ssy = limit;
125:
126: if (w->sx == ssx && w->sy == ssy)
127: continue;
1.9 nicm 128: log_debug("window size %u,%u (was %u,%u)", ssx, ssy, w->sx,
129: w->sy);
1.1 nicm 130:
1.10 nicm 131: is_zoomed = w->flags & WINDOW_ZOOMED;
132: if (is_zoomed)
133: window_unzoom(w);
1.3 nicm 134: layout_resize(w, ssx, ssy);
1.1 nicm 135: window_resize(w, ssx, ssy);
1.10 nicm 136: if (is_zoomed && window_pane_visible(w->active))
137: window_zoom(w->active);
1.2 nicm 138:
139: /*
140: * If the current pane is now not visible, move to the next
141: * that is.
142: */
143: wp = w->active;
144: while (!window_pane_visible(w->active)) {
145: w->active = TAILQ_PREV(w->active, window_panes, entry);
146: if (w->active == NULL)
147: w->active = TAILQ_LAST(&w->panes, window_panes);
148: if (w->active == wp)
149: break;
150: }
151:
1.1 nicm 152: server_redraw_window(w);
1.8 nicm 153: notify_window_layout_changed(w);
1.1 nicm 154: }
155: }
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