c/focus.c

   1 #include "openbox.h"
   2 #include "client.h"
   3 #include "screen.h"
   4 #include "prop.h"
   5 #include "hooks.h"
   6 #include <X11/Xlib.h>
   7
   8 Client *focus_client = NULL;
   9
  10 Window focus_backup = None;
  11
  12 void focus_set_client(Client *client);
  13
  14 void focus_startup()
  15 {
  16     /* create the window which gets focus when no clients get it. Have to
  17        make it override-redirect so we don't try manage it, since it is
  18        mapped. */
  19     XSetWindowAttributes attrib;
  20
  21     attrib.override_redirect = TRUE;
  22     focus_backup = XCreateWindow(ob_display, ob_root,
  23                                  -100, -100, 1, 1, 0, 0, InputOnly,
  24                                  CopyFromParent, CWOverrideRedirect, &attrib);
  25     XMapRaised(ob_display, focus_backup);
  26
  27     /* start with nothing focused */
  28     focus_set_client(NULL);
  29 }
  30
  31 void focus_set_client(Client *client)
  32 {
  33     Window active;
  34
  35     /* sometimes this is called with the already-focused window, this is
  36        important for the python scripts to work (eg, c = 0 twice). don't just
  37        return if _focused_client == c */
  38
  39     /* uninstall the old colormap, and install the new one */
  40     screen_install_colormap(focus_client, FALSE);
  41     screen_install_colormap(client, TRUE);
  42
  43
  44     if (client == NULL) {
  45         /* when nothing will be focused, send focus to the backup target */
  46         XSetInputFocus(ob_display, focus_backup, RevertToNone, CurrentTime);
  47     }
  48
  49     focus_client = client;
  50
  51     /* set the NET_ACTIVE_WINDOW hint */
  52     active = client ? client->window : None;
  53     PROP_SET32(ob_root, net_active_window, window, active);
  54
  55     LOGICALHOOK(Focus, g_quark_try_string("client"), client);
  56 }