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 all_desktops);
39 static ObClient *focus_find_directional (ObClient *c,
41 gboolean dock_windows,
42 gboolean desktop_windows);
43 static ObClient *focus_find_directional (ObClient *c,
45 gboolean dock_windows,
46 gboolean desktop_windows);
48 void focus_cycle_startup(gboolean reconfig)
52 client_add_destroy_notify(focus_cycle_destroy_notify, NULL);
55 void focus_cycle_shutdown(gboolean reconfig)
59 client_remove_destroy_notify(focus_cycle_destroy_notify);
62 void focus_cycle_stop()
64 if (focus_cycle_target)
65 focus_cycle(TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE);
68 static void focus_cycle_destroy_notify(ObClient *client, gpointer data)
70 /* end cycling if the target disappears. CurrentTime is fine, time won't
73 if (focus_cycle_target == client)
74 focus_cycle(TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE);
77 /*! Returns if a focus target has valid group siblings that can be cycled
79 static gboolean focus_target_has_siblings(ObClient *ft, gboolean all_desktops)
84 if (!ft->group) return FALSE;
86 for (it = ft->group->members; it; it = g_slist_next(it)) {
87 ObClient *c = it->data;
88 /* check that it's not a helper window to avoid infinite recursion */
89 if (c != ft && !client_helper(c) &&
90 focus_cycle_target_valid(c, all_desktops, FALSE, FALSE))
98 gboolean focus_cycle_target_valid(ObClient *ft,
99 gboolean all_desktops,
100 gboolean dock_windows,
101 gboolean desktop_windows)
105 /* it's on this desktop unless you want all desktops.
107 do this check first because it will usually filter out the most
109 ok = (all_desktops || ft->desktop == screen_desktop ||
110 ft->desktop == DESKTOP_ALL);
112 /* the window can receive focus somehow */
113 ok = ok && (ft->can_focus || ft->focus_notify);
115 /* it's the right type of window */
116 if (dock_windows || desktop_windows)
117 ok = ok && ((dock_windows && ft->type == OB_CLIENT_TYPE_DOCK) ||
118 (desktop_windows && ft->type == OB_CLIENT_TYPE_DESKTOP));
120 /* normal non-helper windows are valid targets */
122 ((client_normal(ft) && !client_helper(ft))
124 /* helper windows are valid targets it... */
125 (client_helper(ft) &&
126 /* ...a window in its group already has focus ... */
127 ((focus_client && ft->group == focus_client->group) ||
128 /* ... or if there are no other windows in its group
129 that can be cycled to instead */
130 !focus_target_has_siblings(ft, all_desktops))));
132 /* it's not set to skip the taskbar (unless it is a type that would be
133 expected to set this hint */
134 ok = ok && ((ft->type == OB_CLIENT_TYPE_DOCK ||
135 ft->type == OB_CLIENT_TYPE_DESKTOP ||
136 ft->type == OB_CLIENT_TYPE_TOOLBAR ||
137 ft->type == OB_CLIENT_TYPE_MENU ||
138 ft->type == OB_CLIENT_TYPE_UTILITY) ||
141 /* it's not going to just send fous off somewhere else (modal window) */
142 ok = ok && ft == client_focus_target(ft);
147 void focus_cycle(gboolean forward, gboolean all_desktops,
148 gboolean dock_windows, gboolean desktop_windows,
149 gboolean linear, gboolean interactive,
150 gboolean dialog, gboolean done, gboolean cancel)
152 static ObClient *first = NULL;
153 static ObClient *t = NULL;
154 static GList *order = NULL;
155 GList *it, *start, *list;
160 focus_cycle_target = NULL;
168 if (!first) first = focus_client;
170 if (linear) list = client_list;
171 else list = focus_order;
177 if (!focus_cycle_target) focus_cycle_target = focus_client;
179 start = it = g_list_find(list, focus_cycle_target);
180 if (!start) /* switched desktops or something? */
181 start = it = forward ? g_list_last(list) : g_list_first(list);
182 if (!start) goto done_cycle;
187 if (it == NULL) it = g_list_first(list);
190 if (it == NULL) it = g_list_last(list);
193 if (focus_cycle_target_valid(ft, all_desktops, dock_windows,
197 if (ft != focus_cycle_target) { /* prevents flicker */
198 focus_cycle_target = ft;
199 focus_cycle_draw_indicator(ft);
202 /* same arguments as focus_target_valid */
203 focus_cycle_popup_show(ft, all_desktops, dock_windows,
206 } else if (ft != focus_cycle_target) {
207 focus_cycle_target = ft;
212 } while (it != start);
215 if (done && focus_cycle_target)
216 client_activate(focus_cycle_target, FALSE, TRUE);
220 focus_cycle_target = NULL;
225 focus_cycle_draw_indicator(NULL);
226 focus_cycle_popup_hide();
232 /* this be mostly ripped from fvwm */
233 static ObClient *focus_find_directional(ObClient *c, ObDirection dir,
234 gboolean dock_windows,
235 gboolean desktop_windows)
237 gint my_cx, my_cy, his_cx, his_cy;
240 gint score, best_score;
241 ObClient *best_client, *cur;
247 /* first, find the centre coords of the currently focused window */
248 my_cx = c->frame->area.x + c->frame->area.width / 2;
249 my_cy = c->frame->area.y + c->frame->area.height / 2;
254 for(it = g_list_first(client_list); it; it = g_list_next(it)) {
257 /* the currently selected window isn't interesting */
260 if (cur->type == OB_CLIENT_TYPE_DOCK && !dock_windows)
262 if (cur->type == OB_CLIENT_TYPE_DESKTOP && !desktop_windows)
264 if (!client_normal(cur) &&
265 cur->type != OB_CLIENT_TYPE_DOCK &&
266 cur->type != OB_CLIENT_TYPE_DESKTOP)
268 /* using c->desktop instead of screen_desktop doesn't work if the
269 * current window was omnipresent, hope this doesn't have any other
271 if(screen_desktop != cur->desktop && cur->desktop != DESKTOP_ALL)
275 if(!(client_focus_target(cur) == cur &&
276 client_can_focus(cur)))
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, 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_show(focus_cycle_target, 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_hide();
401 void focus_order_add_new(ObClient *c)
404 focus_order_to_top(c);
406 g_assert(!g_list_find(focus_order, c));
407 /* if there are any iconic windows, put this above them in the order,
408 but if there are not, then put it under the currently focused one */
409 if (focus_order && ((ObClient*)focus_order->data)->iconic)
410 focus_order = g_list_insert(focus_order, c, 0);
412 focus_order = g_list_insert(focus_order, c, 1);