1 files changed, 93 insertions, 0 deletions
diff --git a/slideshow/source/inc/wakeupevent.hxx b/slideshow/source/inc/wakeupevent.hxx
new file mode 100644
index 000000000000..58e818a91459
--- /dev/null
+++ b/slideshow/source/inc/wakeupevent.hxx
@@ -0,0 +1,93 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+#ifndef INCLUDED_SLIDESHOW_WAKEUPEVENT_HXX
+#define INCLUDED_SLIDESHOW_WAKEUPEVENT_HXX
+
+#include <canvas/elapsedtime.hxx>
+
+#include "event.hxx"
+#include "activitiesqueue.hxx"
+
+#include <boost/bind.hpp>
+#include <boost/noncopyable.hpp>
+
+namespace slideshow {
+namespace internal {
+
+/** Little helper class, used to set Activities active again
+    after some sleep period.
+
+    Clients can use this class to schedule wakeup events at
+    the EventQueue, to avoid busy-waiting for the next
+    discrete time instant.
+*/
+class WakeupEvent : public Event,
+                    private ::boost::noncopyable
+{
+public:
+    WakeupEvent(
+        ::boost::shared_ptr< ::canvas::tools::ElapsedTime > const& pTimeBase,
+        ActivitiesQueue & rActivityQueue );
+
+    virtual void dispose();
+    virtual bool fire();
+    virtual bool isCharged() const;
+    virtual double getActivationTime( double nCurrentTime ) const;
+
+    /// Start the internal timer
+    void start();
+
+    /** Set the next timeout this object should generate.
+
+        @param nextTime
+        Absolute time, measured from the last start() call,
+        when this event should wakeup the Activity again. If
+        your time is relative, simply call start() just before
+        every setNextTimeout() call.
+    */
+    void setNextTimeout( double nextTime );
+
+    /** Set activity to wakeup.
+
+        The activity given here will be reinserted into the
+        ActivitiesQueue, once the timeout is reached.
+    */
+    void setActivity( const ActivitySharedPtr& rActivity );
+
+private:
+    ::canvas::tools::ElapsedTime    maTimer;
+    double                          mnNextTime;
+    ActivitySharedPtr               mpActivity;
+    ActivitiesQueue&                mrActivityQueue;
+};
+
+typedef ::boost::shared_ptr< WakeupEvent > WakeupEventSharedPtr;
+
+} // namespace internal
+} // namespace presentation
+
+#endif /* INCLUDED_SLIDESHOW_WAKEUPEVENT_HXX */