Annotation of embedaddon/tmux/resize.c, revision 1.1
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: }
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