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[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
9 Client *focus_client = NULL;
10
11 Window focus_backup = None;
12
13 void focus_set_client(Client *client);
14
15 void focus_startup()
16 {
17     /* create the window which gets focus when no clients get it. Have to
18        make it override-redirect so we don't try manage it, since it is
19        mapped. */
20     XSetWindowAttributes attrib;
21
22     attrib.override_redirect = TRUE;
23     focus_backup = XCreateWindow(ob_display, ob_root,
24                                  -100, -100, 1, 1, 0, 0, InputOnly,
25                                  CopyFromParent, CWOverrideRedirect, &attrib);
26     XMapRaised(ob_display, focus_backup);
27
28     /* start with nothing focused */
29     focus_set_client(NULL);
30 }
31
32 void focus_set_client(Client *client)
33 {
34     Window active;
35     Client *old;
36      
37     /* uninstall the old colormap, and install the new one */
38     screen_install_colormap(focus_client, FALSE);
39     screen_install_colormap(client, TRUE);
40
41
42     if (client == NULL) {
43         /* when nothing will be focused, send focus to the backup target */
44         XSetInputFocus(ob_display, focus_backup, RevertToNone, CurrentTime);
45     }
46
47     old = focus_client;
48     focus_client = client;
49
50     /* set the NET_ACTIVE_WINDOW hint */
51     active = client ? client->window : None;
52     PROP_SET32(ob_root, net_active_window, window, active);
53
54     if (focus_client != NULL)
55         dispatch_client(Event_Client_Focus, focus_client, 0, 0);
56     if (old != NULL)
57         dispatch_client(Event_Client_Unfocus, old, 0, 0);
58 }