Annotation of src/usr.bin/tmux/resize.c, Revision 1.8
1.8 ! nicm 1: /* $OpenBSD: resize.c,v 1.7 2010/12/21 22:37:59 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;
1.1 nicm 52: u_int i, j, ssx, ssy, has, limit;
53: int flag;
54:
1.7 nicm 55: RB_FOREACH(s, sessions, &sessions) {
1.1 nicm 56: ssx = ssy = UINT_MAX;
57: for (j = 0; j < ARRAY_LENGTH(&clients); j++) {
58: c = ARRAY_ITEM(&clients, j);
1.4 nicm 59: if (c == NULL || c->flags & CLIENT_SUSPENDED)
1.1 nicm 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;
1.7 nicm 97: RB_FOREACH(s, sessions, &sessions) {
98: if (s->flags & SESSION_UNATTACHED)
1.1 nicm 99: continue;
100: if (flag)
101: has = s->curw->window == w;
102: else
1.5 nicm 103: has = session_has(s, w) != NULL;
1.1 nicm 104: if (has) {
105: if (s->sx < ssx)
106: ssx = s->sx;
107: if (s->sy < ssy)
108: ssy = s->sy;
109: }
110: }
1.6 nicm 111: if (ssx == UINT_MAX || ssy == UINT_MAX)
1.1 nicm 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:
1.3 nicm 127: layout_resize(w, ssx, ssy);
1.1 nicm 128: window_resize(w, ssx, ssy);
1.2 nicm 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:
1.1 nicm 143: server_redraw_window(w);
1.8 ! nicm 144: notify_window_layout_changed(w);
1.1 nicm 145: }
146: }