Added XML support and slideshow constructor to slideshow3D example, now

renamed from the previous osgslideshow.

examples/slideshow3D/SlideEventHandler.h

@@ -0,0 +1,78 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield 
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library 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 
+ * OpenSceneGraph Public License for more details.
+*/
+
+
+#ifndef SLIDEEVENTHANDLER
+#define SLIDEEVENTHANDLER 1
+
+#include <osg/Switch>
+
+#include <osgGA/GUIEventHandler>
+
+class SlideEventHandler : public osgGA::GUIEventHandler
+{
+public:
+
+    SlideEventHandler();
+    
+    META_Object(osgslideshowApp,SlideEventHandler);
+
+    void set(osg::Node* model);
+
+    virtual void accept(osgGA::GUIEventHandlerVisitor& v) { v.visit(*this); }
+
+    virtual bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter&);
+    
+    virtual void getUsage(osg::ApplicationUsage& usage) const;
+
+    enum WhichPosition
+    {
+        FIRST_POSITION = 0,
+        LAST_POSITION = 0xffffffff,
+    };
+
+    bool selectSlide(unsigned int slideNum,unsigned int layerNum=FIRST_POSITION);
+    bool selectLayer(unsigned int layerNum);
+
+    bool nextLayerOrSlide();
+    bool previousLayerOrSlide();
+
+    bool nextSlide();
+    bool previousSlide();
+
+    bool nextLayer();
+    bool previousLayer();
+    
+protected:
+
+    ~SlideEventHandler() {}
+    SlideEventHandler(const SlideEventHandler&,const osg::CopyOp&) {}
+
+    osg::ref_ptr<osg::Switch>   _presentationSwitch;
+    unsigned int                _activeSlide;
+
+    osg::ref_ptr<osg::Switch>   _slideSwitch;
+    unsigned int                _activeLayer;
+
+    bool                        _firstTraversal;
+    double                      _previousTime;
+    double                      _timePerSlide;
+    bool                        _autoSteppingActive;
+    bool                        _loopPresentation;
+    bool                        _pause;
+        
+};
+
+
+
+#endif