414 lines
14 KiB
C
414 lines
14 KiB
C
/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
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focus_cycle.c for the Openbox window manager
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Copyright (c) 2006 Mikael Magnusson
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Copyright (c) 2003-2007 Dana Jansens
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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See the COPYING file for a copy of the GNU General Public License.
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*/
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#include "focus_cycle.h"
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#include "focus_cycle_indicator.h"
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#include "focus_cycle_popup.h"
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#include "client.h"
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#include "frame.h"
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#include "focus.h"
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#include "screen.h"
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#include "openbox.h"
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#include "debug.h"
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#include "group.h"
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#include <X11/Xlib.h>
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#include <glib.h>
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ObClient *focus_cycle_target = NULL;
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static void focus_cycle_destroy_notify (ObClient *client, gpointer data);
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static gboolean focus_target_has_siblings (ObClient *ft,
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gboolean iconic_windows,
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gboolean all_desktops);
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static ObClient *focus_find_directional (ObClient *c,
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ObDirection dir,
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gboolean dock_windows,
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gboolean desktop_windows);
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static ObClient *focus_find_directional (ObClient *c,
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ObDirection dir,
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gboolean dock_windows,
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gboolean desktop_windows);
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void focus_cycle_startup(gboolean reconfig)
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{
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if (reconfig) return;
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client_add_destroy_notify(focus_cycle_destroy_notify, NULL);
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}
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void focus_cycle_shutdown(gboolean reconfig)
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{
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if (reconfig) return;
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client_remove_destroy_notify(focus_cycle_destroy_notify);
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}
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void focus_cycle_stop()
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{
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if (focus_cycle_target)
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focus_cycle(TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE);
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}
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static void focus_cycle_destroy_notify(ObClient *client, gpointer data)
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{
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/* end cycling if the target disappears. CurrentTime is fine, time won't
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be used
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*/
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if (focus_cycle_target == client)
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focus_cycle(TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE);
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}
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/*! Returns if a focus target has valid group siblings that can be cycled
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to in its place */
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static gboolean focus_target_has_siblings(ObClient *ft,
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gboolean iconic_windows,
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gboolean all_desktops)
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{
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GSList *it;
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if (!ft->group) return FALSE;
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for (it = ft->group->members; it; it = g_slist_next(it)) {
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ObClient *c = it->data;
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/* check that it's not a helper window to avoid infinite recursion */
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if (c != ft && !client_helper(c) &&
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focus_cycle_target_valid(c, iconic_windows, all_desktops, FALSE,
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FALSE))
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{
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return TRUE;
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}
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}
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return FALSE;
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}
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gboolean focus_cycle_target_valid(ObClient *ft,
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gboolean iconic_windows,
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gboolean all_desktops,
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gboolean dock_windows,
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gboolean desktop_windows)
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{
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gboolean ok = FALSE;
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/* it's on this desktop unless you want all desktops.
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do this check first because it will usually filter out the most
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windows */
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ok = (all_desktops || ft->desktop == screen_desktop ||
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ft->desktop == DESKTOP_ALL);
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/* the window can receive focus somehow */
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ok = ok && (ft->can_focus || ft->focus_notify);
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/* the window is not iconic, or we're allowed to go to iconic ones */
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ok = ok && (iconic_windows || !ft->iconic);
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/* it's the right type of window */
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if (dock_windows || desktop_windows)
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ok = ok && ((dock_windows && ft->type == OB_CLIENT_TYPE_DOCK) ||
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(desktop_windows && ft->type == OB_CLIENT_TYPE_DESKTOP));
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/* modal windows are important and can always get focus if they are
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visible and stuff, so don't change 'ok' based on their type */
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else if (!ft->modal)
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/* normal non-helper windows are valid targets */
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ok = ok &&
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((client_normal(ft) && !client_helper(ft))
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||
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/* helper windows are valid targets it... */
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(client_helper(ft) &&
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/* ...a window in its group already has focus ... */
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((focus_client && ft->group == focus_client->group) ||
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/* ... or if there are no other windows in its group
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that can be cycled to instead */
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!focus_target_has_siblings(ft, iconic_windows, all_desktops))));
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/* it's not set to skip the taskbar (unless it is a type that would be
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expected to set this hint, or modal) */
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ok = ok && ((ft->type == OB_CLIENT_TYPE_DOCK ||
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ft->type == OB_CLIENT_TYPE_DESKTOP ||
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ft->type == OB_CLIENT_TYPE_TOOLBAR ||
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ft->type == OB_CLIENT_TYPE_MENU ||
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ft->type == OB_CLIENT_TYPE_UTILITY) ||
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ft->modal ||
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!ft->skip_taskbar);
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/* it's not going to just send fous off somewhere else (modal window) */
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ok = ok && ft == client_focus_target(ft);
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return ok;
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}
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void focus_cycle(gboolean forward, gboolean all_desktops,
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gboolean dock_windows, gboolean desktop_windows,
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gboolean linear, gboolean interactive,
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gboolean dialog, gboolean done, gboolean cancel)
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{
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static ObClient *first = NULL;
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static ObClient *t = NULL;
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static GList *order = NULL;
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GList *it, *start, *list;
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ObClient *ft = NULL;
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if (interactive) {
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if (cancel) {
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focus_cycle_target = NULL;
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goto done_cycle;
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} else if (done)
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goto done_cycle;
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if (!focus_order)
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goto done_cycle;
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if (!first) first = focus_client;
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if (linear) list = client_list;
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else list = focus_order;
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} else {
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if (!focus_order)
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goto done_cycle;
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list = client_list;
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}
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if (!focus_cycle_target) focus_cycle_target = focus_client;
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start = it = g_list_find(list, focus_cycle_target);
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if (!start) /* switched desktops or something? */
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start = it = forward ? g_list_last(list) : g_list_first(list);
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if (!start) goto done_cycle;
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do {
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if (forward) {
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it = it->next;
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if (it == NULL) it = g_list_first(list);
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} else {
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it = it->prev;
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if (it == NULL) it = g_list_last(list);
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}
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ft = it->data;
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if (focus_cycle_target_valid(ft, TRUE,
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all_desktops, dock_windows,
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desktop_windows))
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{
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if (interactive) {
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if (ft != focus_cycle_target) { /* prevents flicker */
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focus_cycle_target = ft;
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focus_cycle_draw_indicator(ft);
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}
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if (dialog)
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/* same arguments as focus_target_valid */
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focus_cycle_popup_show(ft, TRUE,
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all_desktops, dock_windows,
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desktop_windows);
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return;
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} else if (ft != focus_cycle_target) {
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focus_cycle_target = ft;
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done = TRUE;
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break;
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}
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}
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} while (it != start);
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done_cycle:
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if (done && focus_cycle_target)
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client_activate(focus_cycle_target, FALSE, TRUE);
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t = NULL;
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first = NULL;
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focus_cycle_target = NULL;
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g_list_free(order);
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order = NULL;
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if (interactive) {
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focus_cycle_draw_indicator(NULL);
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focus_cycle_popup_hide();
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}
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return;
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}
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/* this be mostly ripped from fvwm */
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static ObClient *focus_find_directional(ObClient *c, ObDirection dir,
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gboolean dock_windows,
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gboolean desktop_windows)
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{
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gint my_cx, my_cy, his_cx, his_cy;
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gint offset = 0;
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gint distance = 0;
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gint score, best_score;
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ObClient *best_client, *cur;
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GList *it;
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if(!client_list)
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return NULL;
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/* first, find the centre coords of the currently focused window */
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my_cx = c->frame->area.x + c->frame->area.width / 2;
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my_cy = c->frame->area.y + c->frame->area.height / 2;
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best_score = -1;
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best_client = NULL;
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for(it = g_list_first(client_list); it; it = g_list_next(it)) {
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cur = it->data;
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/* the currently selected window isn't interesting */
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if(cur == c)
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continue;
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if (!focus_cycle_target_valid(it->data, FALSE, FALSE, dock_windows,
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desktop_windows))
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continue;
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/* find the centre coords of this window, from the
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* currently focused window's point of view */
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his_cx = (cur->frame->area.x - my_cx)
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+ cur->frame->area.width / 2;
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his_cy = (cur->frame->area.y - my_cy)
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+ cur->frame->area.height / 2;
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if(dir == OB_DIRECTION_NORTHEAST || dir == OB_DIRECTION_SOUTHEAST ||
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dir == OB_DIRECTION_SOUTHWEST || dir == OB_DIRECTION_NORTHWEST) {
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gint tx;
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/* Rotate the diagonals 45 degrees counterclockwise.
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* To do this, multiply the matrix /+h +h\ with the
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* vector (x y). \-h +h/
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* h = sqrt(0.5). We can set h := 1 since absolute
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* distance doesn't matter here. */
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tx = his_cx + his_cy;
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his_cy = -his_cx + his_cy;
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his_cx = tx;
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}
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switch(dir) {
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case OB_DIRECTION_NORTH:
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case OB_DIRECTION_SOUTH:
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case OB_DIRECTION_NORTHEAST:
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case OB_DIRECTION_SOUTHWEST:
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offset = (his_cx < 0) ? -his_cx : his_cx;
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distance = ((dir == OB_DIRECTION_NORTH ||
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dir == OB_DIRECTION_NORTHEAST) ?
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-his_cy : his_cy);
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break;
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case OB_DIRECTION_EAST:
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case OB_DIRECTION_WEST:
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case OB_DIRECTION_SOUTHEAST:
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case OB_DIRECTION_NORTHWEST:
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offset = (his_cy < 0) ? -his_cy : his_cy;
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distance = ((dir == OB_DIRECTION_WEST ||
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dir == OB_DIRECTION_NORTHWEST) ?
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-his_cx : his_cx);
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break;
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}
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/* the target must be in the requested direction */
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if(distance <= 0)
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continue;
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/* Calculate score for this window. The smaller the better. */
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score = distance + offset;
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/* windows more than 45 degrees off the direction are
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* heavily penalized and will only be chosen if nothing
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* else within a million pixels */
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if(offset > distance)
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score += 1000000;
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if(best_score == -1 || score < best_score)
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best_client = cur,
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best_score = score;
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}
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return best_client;
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}
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void focus_directional_cycle(ObDirection dir, gboolean dock_windows,
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gboolean desktop_windows, gboolean interactive,
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gboolean dialog, gboolean done, gboolean cancel)
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{
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static ObClient *first = NULL;
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ObClient *ft = NULL;
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if (!interactive)
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return;
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if (cancel) {
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focus_cycle_target = NULL;
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goto done_cycle;
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} else if (done)
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goto done_cycle;
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if (!focus_order)
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goto done_cycle;
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if (!first) first = focus_client;
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if (!focus_cycle_target) focus_cycle_target = focus_client;
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if (focus_cycle_target)
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ft = focus_find_directional(focus_cycle_target, dir, dock_windows,
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desktop_windows);
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else {
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GList *it;
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for (it = focus_order; it; it = g_list_next(it))
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if (focus_cycle_target_valid(it->data, FALSE, FALSE, dock_windows,
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desktop_windows))
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ft = it->data;
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}
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if (ft) {
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if (ft != focus_cycle_target) {/* prevents flicker */
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focus_cycle_target = ft;
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focus_cycle_draw_indicator(ft);
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}
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}
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if (focus_cycle_target && dialog) {
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/* same arguments as focus_target_valid */
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focus_cycle_popup_single_show(focus_cycle_target,
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FALSE, FALSE, dock_windows,
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desktop_windows);
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return;
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}
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done_cycle:
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if (done && focus_cycle_target)
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client_activate(focus_cycle_target, FALSE, TRUE);
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first = NULL;
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focus_cycle_target = NULL;
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focus_cycle_draw_indicator(NULL);
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focus_cycle_popup_single_hide();
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return;
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}
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void focus_order_add_new(ObClient *c)
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{
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if (c->iconic)
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focus_order_to_top(c);
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else {
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g_assert(!g_list_find(focus_order, c));
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/* if there are any iconic windows, put this above them in the order,
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but if there are not, then put it under the currently focused one */
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if (focus_order && ((ObClient*)focus_order->data)->iconic)
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focus_order = g_list_insert(focus_order, c, 0);
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else
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focus_order = g_list_insert(focus_order, c, 1);
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}
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}
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