Dogcows Code - chaz/openbox/blob - 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 }