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