1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
3 focus_cycle.c for the Openbox window manager
4 Copyright (c) 2006 Mikael Magnusson
5 Copyright (c) 2003-2007 Dana Jansens
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 See the COPYING file for a copy of the GNU General Public License.
20 #include "focus_cycle.h"
21 #include "focus_cycle_indicator.h"
22 #include "focus_cycle_popup.h"
34 ObClient *focus_cycle_target = NULL;
36 static void focus_cycle_destroy_notify (ObClient *client, gpointer data);
37 static gboolean focus_target_has_siblings (ObClient *ft,
38 gboolean iconic_windows,
39 gboolean all_desktops);
40 static ObClient *focus_find_directional (ObClient *c,
42 gboolean dock_windows,
43 gboolean desktop_windows);
44 static ObClient *focus_find_directional (ObClient *c,
46 gboolean dock_windows,
47 gboolean desktop_windows);
49 void focus_cycle_startup(gboolean reconfig)
53 client_add_destroy_notify(focus_cycle_destroy_notify, NULL);
56 void focus_cycle_shutdown(gboolean reconfig)
60 client_remove_destroy_notify(focus_cycle_destroy_notify);
63 void focus_cycle_stop()
65 if (focus_cycle_target) {
66 focus_cycle(TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE);
67 focus_directional_cycle(0, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE);
71 static void focus_cycle_destroy_notify(ObClient *client, gpointer data)
73 /* end cycling if the target disappears. CurrentTime is fine, time won't
76 if (focus_cycle_target == client)
77 focus_cycle(TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE);
80 /*! Returns if a focus target has valid group siblings that can be cycled
82 static gboolean focus_target_has_siblings(ObClient *ft,
83 gboolean iconic_windows,
84 gboolean all_desktops)
89 if (!ft->group) return FALSE;
91 for (it = ft->group->members; it; it = g_slist_next(it)) {
92 ObClient *c = it->data;
93 /* check that it's not a helper window to avoid infinite recursion */
94 if (c != ft && !client_helper(c) &&
95 focus_cycle_target_valid(c, iconic_windows, all_desktops, FALSE,
104 gboolean focus_cycle_target_valid(ObClient *ft,
105 gboolean iconic_windows,
106 gboolean all_desktops,
107 gboolean dock_windows,
108 gboolean desktop_windows)
112 /* it's on this desktop unless you want all desktops.
114 do this check first because it will usually filter out the most
116 ok = (all_desktops || ft->desktop == screen_desktop ||
117 ft->desktop == DESKTOP_ALL);
119 /* the window can receive focus somehow */
120 ok = ok && (ft->can_focus || ft->focus_notify);
122 /* the window is not iconic, or we're allowed to go to iconic ones */
123 ok = ok && (iconic_windows || !ft->iconic);
125 /* it's the right type of window */
126 if (dock_windows || desktop_windows)
127 ok = ok && ((dock_windows && ft->type == OB_CLIENT_TYPE_DOCK) ||
128 (desktop_windows && ft->type == OB_CLIENT_TYPE_DESKTOP));
129 /* modal windows are important and can always get focus if they are
130 visible and stuff, so don't change 'ok' based on their type */
132 /* normal non-helper windows are valid targets */
134 ((client_normal(ft) && !client_helper(ft))
136 /* helper windows are valid targets it... */
137 (client_helper(ft) &&
138 /* ...a window in its group already has focus ... */
139 ((focus_client && ft->group == focus_client->group) ||
140 /* ... or if there are no other windows in its group
141 that can be cycled to instead */
142 !focus_target_has_siblings(ft, iconic_windows, all_desktops))));
144 /* it's not set to skip the taskbar (unless it is a type that would be
145 expected to set this hint, or modal) */
146 ok = ok && ((ft->type == OB_CLIENT_TYPE_DOCK ||
147 ft->type == OB_CLIENT_TYPE_DESKTOP ||
148 ft->type == OB_CLIENT_TYPE_TOOLBAR ||
149 ft->type == OB_CLIENT_TYPE_MENU ||
150 ft->type == OB_CLIENT_TYPE_UTILITY) ||
154 /* it's not going to just send fous off somewhere else (modal window) */
155 ok = ok && ft == client_focus_target(ft);
160 void focus_cycle(gboolean forward, gboolean all_desktops,
161 gboolean dock_windows, gboolean desktop_windows,
162 gboolean linear, gboolean interactive,
163 gboolean dialog, gboolean done, gboolean cancel)
165 static ObClient *first = NULL;
166 static ObClient *t = NULL;
167 static GList *order = NULL;
168 GList *it, *start, *list;
173 focus_cycle_target = NULL;
181 if (!first) first = focus_client;
183 if (linear) list = client_list;
184 else list = focus_order;
190 if (!focus_cycle_target) focus_cycle_target = focus_client;
192 start = it = g_list_find(list, focus_cycle_target);
193 if (!start) /* switched desktops or something? */
194 start = it = forward ? g_list_last(list) : g_list_first(list);
195 if (!start) goto done_cycle;
200 if (it == NULL) it = g_list_first(list);
203 if (it == NULL) it = g_list_last(list);
206 if (focus_cycle_target_valid(ft, TRUE,
207 all_desktops, dock_windows,
211 if (ft != focus_cycle_target) { /* prevents flicker */
212 focus_cycle_target = ft;
213 focus_cycle_draw_indicator(ft);
216 /* same arguments as focus_target_valid */
217 focus_cycle_popup_show(ft, TRUE,
218 all_desktops, dock_windows,
221 } else if (ft != focus_cycle_target) {
222 focus_cycle_target = ft;
227 } while (it != start);
230 if (done && focus_cycle_target)
231 client_activate(focus_cycle_target, FALSE, TRUE);
235 focus_cycle_target = NULL;
240 focus_cycle_draw_indicator(NULL);
241 focus_cycle_popup_hide();
247 /* this be mostly ripped from fvwm */
248 static ObClient *focus_find_directional(ObClient *c, ObDirection dir,
249 gboolean dock_windows,
250 gboolean desktop_windows)
252 gint my_cx, my_cy, his_cx, his_cy;
255 gint score, best_score;
256 ObClient *best_client, *cur;
262 /* first, find the centre coords of the currently focused window */
263 my_cx = c->frame->area.x + c->frame->area.width / 2;
264 my_cy = c->frame->area.y + c->frame->area.height / 2;
269 for(it = g_list_first(client_list); it; it = g_list_next(it)) {
272 /* the currently selected window isn't interesting */
275 if (!focus_cycle_target_valid(it->data, FALSE, FALSE, dock_windows,
279 /* find the centre coords of this window, from the
280 * currently focused window's point of view */
281 his_cx = (cur->frame->area.x - my_cx)
282 + cur->frame->area.width / 2;
283 his_cy = (cur->frame->area.y - my_cy)
284 + cur->frame->area.height / 2;
286 if(dir == OB_DIRECTION_NORTHEAST || dir == OB_DIRECTION_SOUTHEAST ||
287 dir == OB_DIRECTION_SOUTHWEST || dir == OB_DIRECTION_NORTHWEST) {
289 /* Rotate the diagonals 45 degrees counterclockwise.
290 * To do this, multiply the matrix /+h +h\ with the
291 * vector (x y). \-h +h/
292 * h = sqrt(0.5). We can set h := 1 since absolute
293 * distance doesn't matter here. */
294 tx = his_cx + his_cy;
295 his_cy = -his_cx + his_cy;
300 case OB_DIRECTION_NORTH:
301 case OB_DIRECTION_SOUTH:
302 case OB_DIRECTION_NORTHEAST:
303 case OB_DIRECTION_SOUTHWEST:
304 offset = (his_cx < 0) ? -his_cx : his_cx;
305 distance = ((dir == OB_DIRECTION_NORTH ||
306 dir == OB_DIRECTION_NORTHEAST) ?
309 case OB_DIRECTION_EAST:
310 case OB_DIRECTION_WEST:
311 case OB_DIRECTION_SOUTHEAST:
312 case OB_DIRECTION_NORTHWEST:
313 offset = (his_cy < 0) ? -his_cy : his_cy;
314 distance = ((dir == OB_DIRECTION_WEST ||
315 dir == OB_DIRECTION_NORTHWEST) ?
320 /* the target must be in the requested direction */
324 /* Calculate score for this window. The smaller the better. */
325 score = distance + offset;
327 /* windows more than 45 degrees off the direction are
328 * heavily penalized and will only be chosen if nothing
329 * else within a million pixels */
330 if(offset > distance)
333 if(best_score == -1 || score < best_score)
341 void focus_directional_cycle(ObDirection dir, gboolean dock_windows,
342 gboolean desktop_windows, gboolean interactive,
343 gboolean dialog, gboolean done, gboolean cancel)
345 static ObClient *first = NULL;
352 focus_cycle_target = NULL;
360 if (!first) first = focus_client;
361 if (!focus_cycle_target) focus_cycle_target = focus_client;
363 if (focus_cycle_target)
364 ft = focus_find_directional(focus_cycle_target, dir, dock_windows,
369 for (it = focus_order; it; it = g_list_next(it))
370 if (focus_cycle_target_valid(it->data, FALSE, FALSE, dock_windows,
376 if (ft != focus_cycle_target) {/* prevents flicker */
377 focus_cycle_target = ft;
378 focus_cycle_draw_indicator(ft);
381 if (focus_cycle_target && dialog) {
382 /* same arguments as focus_target_valid */
383 focus_cycle_popup_single_show(focus_cycle_target,
384 FALSE, FALSE, dock_windows,
390 if (done && focus_cycle_target)
391 client_activate(focus_cycle_target, FALSE, TRUE);
394 focus_cycle_target = NULL;
396 focus_cycle_draw_indicator(NULL);
397 focus_cycle_popup_single_hide();