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1.1 misho 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: }