1 files changed, 61 insertions, 0 deletions
diff --git a/src/rmd_wm_is_compositing.c b/src/rmd_wm_is_compositing.c
new file mode 100644
index 0000000..bc43282
--- /dev/null
+++ b/src/rmd_wm_is_compositing.c
@@ -0,0 +1,61 @@
+/******************************************************************************
+*                            recordMyDesktop                                  *
+*******************************************************************************
+*                                                                             *
+*            Copyright (C) 2006,2007,2008 John Varouhakis                     *
+*                                                                             *
+*                                                                             *
+*   This program is free software; you can redistribute it and/or modify      *
+*   it under the terms of the GNU General Public License as published by      *
+*   the Free Software Foundation; either version 2 of the License, or         *
+*   (at your option) any later version.                                       *
+*                                                                             *
+*   This program is distributed in the hope that it will be useful,           *
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of            *
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
+*   GNU General Public License for more details.                              *
+*                                                                             *
+*   You should have received a copy of the GNU General Public License         *
+*   along with this program; if not, write to the Free Software               *
+*   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA  *
+*                                                                             *
+*                                                                             *
+*                                                                             *
+*   For further information contact me at johnvarouhakis@gmail.com            *
+******************************************************************************/
+
+#include "config.h"
+#include "rmd_wm_is_compositing.h"
+
+#include "rmd_wm_check.h"
+#include "rmd_types.h"
+
+#include <X11/Xatom.h>
+
+#include <stdlib.h>
+
+
+boolean rmdWMIsCompositing( Display *dpy, int screen ) {
+	Window win;
+	Atom atom;
+	char buf[32];
+	char *window_manager=rmdWMCheck( dpy, RootWindow( dpy, screen ) );
+
+	//If the wm name is queried successfully the wm is compliant (source  
+	//http://standards.freedesktop.org/wm-spec/1.4/ar01s03.html#id2568282 )
+	//in which case we will also free() the allcoated string.
+
+	if (window_manager == NULL)
+		return FALSE;
+	else
+		free(window_manager); 
+
+	snprintf( buf, sizeof(buf), "_NET_WM_CM_S%d", screen);
+	atom = XInternAtom(dpy, buf, True);
+	if (atom == None)
+		return FALSE;
+
+	win = XGetSelectionOwner(dpy, atom);
+
+	return win != None;
+}