Annotation of src/usr.bin/tmux/resize.c, Revision 1.22
1.22 ! nicm 1: /* $OpenBSD: resize.c,v 1.21 2017/02/03 21:01:02 nicm Exp $ */
1.1 nicm 2:
3: /*
1.19 nicm 4: * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 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;
1.17 nicm 52: u_int ssx, ssy, has, limit;
1.14 nicm 53: int flag, has_status, is_zoomed, forced;
1.1 nicm 54:
1.7 nicm 55: RB_FOREACH(s, sessions, &sessions) {
1.18 nicm 56: has_status = options_get_number(s->options, "status");
1.9 nicm 57:
1.12 nicm 58: s->attached = 0;
1.1 nicm 59: ssx = ssy = UINT_MAX;
1.17 nicm 60: TAILQ_FOREACH(c, &clients, entry) {
61: if (c->flags & CLIENT_SUSPENDED)
1.1 nicm 62: continue;
63: if (c->session == s) {
64: if (c->tty.sx < ssx)
65: ssx = c->tty.sx;
1.9 nicm 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)
1.1 nicm 71: ssy = c->tty.sy;
1.12 nicm 72: s->attached++;
1.1 nicm 73: }
74: }
75: if (ssx == UINT_MAX || ssy == UINT_MAX) {
76: s->flags |= SESSION_UNATTACHED;
77: continue;
78: }
79: s->flags &= ~SESSION_UNATTACHED;
80:
1.9 nicm 81: if (has_status && ssy == 0)
82: ssy = 1;
83:
1.1 nicm 84: if (s->sx == ssx && s->sy == ssy)
85: continue;
86:
1.22 ! nicm 87: log_debug("session $%u size %u,%u (was %u,%u)", s->id, ssx, ssy,
! 88: s->sx, s->sy);
1.1 nicm 89:
90: s->sx = ssx;
91: s->sy = ssy;
1.21 nicm 92:
93: status_update_saved(s);
1.1 nicm 94: }
95:
1.15 nicm 96: RB_FOREACH(w, windows, &windows) {
97: if (w->active == NULL)
1.1 nicm 98: continue;
1.18 nicm 99: flag = options_get_number(w->options, "aggressive-resize");
1.1 nicm 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
1.16 nicm 108: has = session_has(s, w);
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:
1.14 nicm 119: forced = 0;
1.18 nicm 120: limit = options_get_number(w->options, "force-width");
1.14 nicm 121: if (limit >= PANE_MINIMUM && ssx > limit) {
1.1 nicm 122: ssx = limit;
1.14 nicm 123: forced |= WINDOW_FORCEWIDTH;
124: }
1.18 nicm 125: limit = options_get_number(w->options, "force-height");
1.14 nicm 126: if (limit >= PANE_MINIMUM && ssy > limit) {
1.1 nicm 127: ssy = limit;
1.14 nicm 128: forced |= WINDOW_FORCEHEIGHT;
129: }
1.1 nicm 130:
131: if (w->sx == ssx && w->sy == ssy)
132: continue;
1.22 ! nicm 133: log_debug("window @%u size %u,%u (was %u,%u)", w->id, ssx, ssy,
! 134: w->sx, w->sy);
1.14 nicm 135:
136: w->flags &= ~(WINDOW_FORCEWIDTH|WINDOW_FORCEHEIGHT);
137: w->flags |= forced;
1.1 nicm 138:
1.10 nicm 139: is_zoomed = w->flags & WINDOW_ZOOMED;
140: if (is_zoomed)
141: window_unzoom(w);
1.3 nicm 142: layout_resize(w, ssx, ssy);
1.1 nicm 143: window_resize(w, ssx, ssy);
1.10 nicm 144: if (is_zoomed && window_pane_visible(w->active))
145: window_zoom(w->active);
1.2 nicm 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:
1.1 nicm 160: server_redraw_window(w);
1.20 nicm 161: notify_window("window-layout-changed", w);
1.1 nicm 162: }
163: }
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