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
75 if (focus_cycle_target == client)
79 /*! Returns if a focus target has valid group siblings that can be cycled
81 static gboolean focus_target_has_siblings(ObClient *ft,
82 gboolean iconic_windows,
83 gboolean all_desktops)
88 if (!ft->group) return FALSE;
90 for (it = ft->group->members; it; it = g_slist_next(it)) {
91 ObClient *c = it->data;
92 /* check that it's not a helper window to avoid infinite recursion */
93 if (c != ft && !client_helper(c) &&
94 focus_cycle_target_valid(c, iconic_windows, all_desktops, FALSE,
103 gboolean focus_cycle_target_valid(ObClient *ft,
104 gboolean iconic_windows,
105 gboolean all_desktops,
106 gboolean dock_windows,
107 gboolean desktop_windows)
111 /* it's on this desktop unless you want all desktops.
113 do this check first because it will usually filter out the most
115 ok = (all_desktops || ft->desktop == screen_desktop ||
116 ft->desktop == DESKTOP_ALL);
118 /* the window can receive focus somehow */
119 ok = ok && (ft->can_focus || ft->focus_notify);
121 /* the window is not iconic, or we're allowed to go to iconic ones */
122 ok = ok && (iconic_windows || !ft->iconic);
124 /* it's the right type of window */
125 if (dock_windows || desktop_windows)
126 ok = ok && ((dock_windows && ft->type == OB_CLIENT_TYPE_DOCK) ||
127 (desktop_windows && ft->type == OB_CLIENT_TYPE_DESKTOP));
128 /* modal windows are important and can always get focus if they are
129 visible and stuff, so don't change 'ok' based on their type */
131 /* normal non-helper windows are valid targets */
133 ((client_normal(ft) && !client_helper(ft))
135 /* helper windows are valid targets it... */
136 (client_helper(ft) &&
137 /* ...a window in its group already has focus ... */
138 ((focus_client && ft->group == focus_client->group) ||
139 /* ... or if there are no other windows in its group
140 that can be cycled to instead */
141 !focus_target_has_siblings(ft, iconic_windows, all_desktops))));
143 /* it's not set to skip the taskbar (unless it is a type that would be
144 expected to set this hint, or modal) */
145 ok = ok && ((ft->type == OB_CLIENT_TYPE_DOCK ||
146 ft->type == OB_CLIENT_TYPE_DESKTOP ||
147 ft->type == OB_CLIENT_TYPE_TOOLBAR ||
148 ft->type == OB_CLIENT_TYPE_MENU ||
149 ft->type == OB_CLIENT_TYPE_UTILITY) ||
153 /* it's not going to just send fous off somewhere else (modal window) */
154 ok = ok && ft == client_focus_target(ft);
159 void focus_cycle(gboolean forward, gboolean all_desktops,
160 gboolean dock_windows, gboolean desktop_windows,
161 gboolean linear, gboolean interactive,
162 gboolean dialog, gboolean done, gboolean cancel)
164 static ObClient *first = NULL;
165 static ObClient *t = NULL;
166 static GList *order = NULL;
167 GList *it, *start, *list;
172 focus_cycle_target = NULL;
180 if (!first) first = focus_client;
182 if (linear) list = client_list;
183 else list = focus_order;
189 if (!focus_cycle_target) focus_cycle_target = focus_client;
191 start = it = g_list_find(list, focus_cycle_target);
192 if (!start) /* switched desktops or something? */
193 start = it = forward ? g_list_last(list) : g_list_first(list);
194 if (!start) goto done_cycle;
199 if (it == NULL) it = g_list_first(list);
202 if (it == NULL) it = g_list_last(list);
205 if (focus_cycle_target_valid(ft, TRUE,
206 all_desktops, dock_windows,
210 if (ft != focus_cycle_target) { /* prevents flicker */
211 focus_cycle_target = ft;
212 focus_cycle_draw_indicator(ft);
215 /* same arguments as focus_target_valid */
216 focus_cycle_popup_show(ft, TRUE,
217 all_desktops, dock_windows,
220 } else if (ft != focus_cycle_target) {
221 focus_cycle_target = ft;
226 } while (it != start);
229 if (done && focus_cycle_target)
230 client_activate(focus_cycle_target, FALSE, TRUE);
234 focus_cycle_target = NULL;
239 focus_cycle_draw_indicator(NULL);
240 focus_cycle_popup_hide();
246 /* this be mostly ripped from fvwm */
247 static ObClient *focus_find_directional(ObClient *c, ObDirection dir,
248 gboolean dock_windows,
249 gboolean desktop_windows)
251 gint my_cx, my_cy, his_cx, his_cy;
254 gint score, best_score;
255 ObClient *best_client, *cur;
261 /* first, find the centre coords of the currently focused window */
262 my_cx = c->frame->area.x + c->frame->area.width / 2;
263 my_cy = c->frame->area.y + c->frame->area.height / 2;
268 for(it = g_list_first(client_list); it; it = g_list_next(it)) {
271 /* the currently selected window isn't interesting */
274 if (!focus_cycle_target_valid(it->data, FALSE, FALSE, dock_windows,
278 /* find the centre coords of this window, from the
279 * currently focused window's point of view */
280 his_cx = (cur->frame->area.x - my_cx)
281 + cur->frame->area.width / 2;
282 his_cy = (cur->frame->area.y - my_cy)
283 + cur->frame->area.height / 2;
285 if(dir == OB_DIRECTION_NORTHEAST || dir == OB_DIRECTION_SOUTHEAST ||
286 dir == OB_DIRECTION_SOUTHWEST || dir == OB_DIRECTION_NORTHWEST) {
288 /* Rotate the diagonals 45 degrees counterclockwise.
289 * To do this, multiply the matrix /+h +h\ with the
290 * vector (x y). \-h +h/
291 * h = sqrt(0.5). We can set h := 1 since absolute
292 * distance doesn't matter here. */
293 tx = his_cx + his_cy;
294 his_cy = -his_cx + his_cy;
299 case OB_DIRECTION_NORTH:
300 case OB_DIRECTION_SOUTH:
301 case OB_DIRECTION_NORTHEAST:
302 case OB_DIRECTION_SOUTHWEST:
303 offset = (his_cx < 0) ? -his_cx : his_cx;
304 distance = ((dir == OB_DIRECTION_NORTH ||
305 dir == OB_DIRECTION_NORTHEAST) ?
308 case OB_DIRECTION_EAST:
309 case OB_DIRECTION_WEST:
310 case OB_DIRECTION_SOUTHEAST:
311 case OB_DIRECTION_NORTHWEST:
312 offset = (his_cy < 0) ? -his_cy : his_cy;
313 distance = ((dir == OB_DIRECTION_WEST ||
314 dir == OB_DIRECTION_NORTHWEST) ?
319 /* the target must be in the requested direction */
323 /* Calculate score for this window. The smaller the better. */
324 score = distance + offset;
326 /* windows more than 45 degrees off the direction are
327 * heavily penalized and will only be chosen if nothing
328 * else within a million pixels */
329 if(offset > distance)
332 if(best_score == -1 || score < best_score)
340 void focus_directional_cycle(ObDirection dir, gboolean dock_windows,
341 gboolean desktop_windows, gboolean interactive,
342 gboolean dialog, gboolean done, gboolean cancel)
344 static ObClient *first = NULL;
351 focus_cycle_target = NULL;
359 if (!first) first = focus_client;
360 if (!focus_cycle_target) focus_cycle_target = focus_client;
362 if (focus_cycle_target)
363 ft = focus_find_directional(focus_cycle_target, dir, dock_windows,
368 for (it = focus_order; it; it = g_list_next(it))
369 if (focus_cycle_target_valid(it->data, FALSE, FALSE, dock_windows,
375 if (ft != focus_cycle_target) {/* prevents flicker */
376 focus_cycle_target = ft;
377 focus_cycle_draw_indicator(ft);
380 if (focus_cycle_target && dialog) {
381 /* same arguments as focus_target_valid */
382 focus_cycle_popup_single_show(focus_cycle_target,
383 FALSE, FALSE, dock_windows,
389 if (done && focus_cycle_target)
390 client_activate(focus_cycle_target, FALSE, TRUE);
393 focus_cycle_target = NULL;
395 focus_cycle_draw_indicator(NULL);
396 focus_cycle_popup_single_hide();