From http://www.jwz.org/xscreensaver/xscreensaver-5.33.tar.gz

[xscreensaver] / driver / xscreensaver.c

diff --git a/driver/xscreensaver.c b/driver/xscreensaver.c
index d2dbeb9227759a4c14478579357a0b3914f33d39..d7478378a3da5e7d561252724fc57c152a8f23cf 100644 (file)
--- a/driver/xscreensaver.c
+++ b/driver/xscreensaver.c
@@ -1,4 +1,4 @@
-/* xscreensaver, Copyright (c) 1991-2013 Jamie Zawinski <jwz@jwz.org>
+/* xscreensaver, Copyright (c) 1991-2014 Jamie Zawinski <jwz@jwz.org>
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
@@ -93,6 +93,14 @@
  *   subwindows.  It is an incredible misdesign that one client can make
  *   another client malfunction in this way.
  *
+ *   But here's a new kink that started showing up in late 2014: GNOME programs
+ *   don't actually select for or receive KeyPress events! They do it behind
+ *   the scenes through some kind of Input Method magic, even when running in
+ *   an en_US locale.  However, in that case, those applications *do* seem to
+ *   update the _NET_WM_USER_TIME on their own windows every time they have
+ *   received a secret KeyPress, so we *also* monitor that property on every
+ *   window, and treat changes to it as identical to KeyPress.
+ *
  *   To detect mouse motion, we periodically wake up and poll the mouse
  *   position and button/modifier state, and notice when something has
  *   changed.  We make this check every five seconds by default, and since the
@@ -659,6 +667,7 @@ connect_to_server (saver_info *si, int *argc, char **argv)
   XA_XSETROOT_ID = XInternAtom (si->dpy, "_XSETROOT_ID", False);
   XA_ESETROOT_PMAP_ID = XInternAtom (si->dpy, "ESETROOT_PMAP_ID", False);
   XA_XROOTPMAP_ID = XInternAtom (si->dpy, "_XROOTPMAP_ID", False);
+  XA_NET_WM_USER_TIME = XInternAtom (si->dpy, "_NET_WM_USER_TIME", False);
   XA_ACTIVATE = XInternAtom (si->dpy, "ACTIVATE", False);
   XA_DEACTIVATE = XInternAtom (si->dpy, "DEACTIVATE", False);
   XA_RESTART = XInternAtom (si->dpy, "RESTART", False);