the focus_order shit is init'd by the screen_startup setting the number of desktops
[dana/openbox.git] / openbox / focus.c
1 #include "openbox.h"
2 #include "client.h"
3 #include "screen.h"
4 #include "prop.h"
5 #include "dispatch.h"
6
7 #include <X11/Xlib.h>
8 #include <glib.h>
9
10 Client *focus_client = NULL;
11 GList **focus_order = NULL; /* these lists are created when screen_startup
12                                sets the number of desktops */
13
14 Window focus_backup = None;
15
16 void focus_set_client(Client *client);
17
18 void focus_startup()
19 {
20     /* create the window which gets focus when no clients get it. Have to
21        make it override-redirect so we don't try manage it, since it is
22        mapped. */
23     XSetWindowAttributes attrib;
24
25     attrib.override_redirect = TRUE;
26     focus_backup = XCreateWindow(ob_display, ob_root,
27                                  -100, -100, 1, 1, 0, 0, InputOnly,
28                                  CopyFromParent, CWOverrideRedirect, &attrib);
29     XMapRaised(ob_display, focus_backup);
30
31     /* start with nothing focused */
32     focus_set_client(NULL);
33 }
34
35 void focus_shutdown()
36 {
37     guint i;
38
39     for (i = 0; i < screen_num_desktops; ++i)
40         g_list_free(focus_order[i]);
41     g_free(focus_order);
42
43     /* reset focus to root */
44     XSetInputFocus(ob_display, PointerRoot, RevertToNone, CurrentTime);
45 }
46
47 void focus_set_client(Client *client)
48 {
49     Window active;
50     Client *old;
51     guint desktop;
52
53     /* uninstall the old colormap, and install the new one */
54     screen_install_colormap(focus_client, FALSE);
55     screen_install_colormap(client, TRUE);
56
57
58     if (client == NULL) {
59         /* when nothing will be focused, send focus to the backup target */
60         XSetInputFocus(ob_display, focus_backup, RevertToNone, CurrentTime);
61     }
62
63     old = focus_client;
64     focus_client = client;
65
66     /* move to the top of the list */
67     if (client != NULL) {
68         desktop = client->desktop;
69         if (desktop == DESKTOP_ALL) desktop = screen_desktop;
70         focus_order[desktop] = g_list_remove(focus_order[desktop], client);
71         focus_order[desktop] = g_list_prepend(focus_order[desktop], client);
72     }
73
74     /* set the NET_ACTIVE_WINDOW hint */
75     active = client ? client->window : None;
76     PROP_SET32(ob_root, net_active_window, window, active);
77
78     if (focus_client != NULL)
79         dispatch_client(Event_Client_Focus, focus_client, 0, 0);
80     if (old != NULL)
81         dispatch_client(Event_Client_Unfocus, old, 0, 0);
82 }