/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2005 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 OSGGLUT_ProducerEventAdapter
#define OSGGLUT_ProducerEventAdapter 1

#include <osgProducer/Export>

#include <osgGA/GUIEventAdapter>
#include <Producer/KeyboardMouse>


namespace osgProducer {

/** Class for adapting Producer events so that they can be used as input to osgGA::CameraManipulators.*/
class OSGPRODUCER_EXPORT EventAdapter : public osgGA::GUIEventAdapter
{

    public:
        EventAdapter();
        virtual ~EventAdapter() {}

        /** Get the EventType of the GUI event.*/
        virtual EventType getEventType() const { return _eventType; }

        inline void setKey(int key) { _key = key; }

        /** key pressed, return -1 if inappropriate for this event. */
        virtual int getKey() const { return _key; }

        /** button pressed/released, return -1 if inappropriate for this event.*/
        virtual int getButton() const { return _button; }

        /** window minimum x. */
        virtual float getXmin() const  { return _Xmin; }

        /** window maximum x. */
        virtual float getXmax() const  { return _Xmax; }

        /** window minimum y. */
        virtual float getYmin() const { return _Ymin; }

        /** window maximum y. */
        virtual float getYmax() const { return _Ymax; }

        inline void setX(float x) { _mx = x; }

        /** current mouse x position.*/
        virtual float getX() const { return _mx; }

        inline void setY(float y) { _my = y; }

        /** current mouse y position.*/
        virtual float getY() const { return _my; }

        inline void setButtonMak(unsigned int mask) { _buttonMask = mask; }

        /** current mouse button state */
        virtual unsigned int getButtonMask() const { return _buttonMask; }

        /** time in seconds of event. */
        virtual double time() const { return _time; }

        virtual unsigned int getModKeyMask() const { return _modKeyMask; }

        /** static method for setting window dimensions.*/
        static void setWindowSize(float Xmin, float Ymin, float Xmax, float Ymax);

        /** static method for setting button state.*/
        static void setButtonMask(unsigned int buttonMask);


        /** method for adapting resize events. */
        void adaptResize(double t, float Xmin, float Ymin, float Xmax, float Ymax);

        /** method for adapting mouse scroll wheel events. */
        void adaptMouseScroll(double t, Producer::KeyboardMouseCallback::ScrollingMotion sm);

        /** method for adapting mouse motion events whilst mouse buttons are pressed.*/
        void adaptMouseMotion(double t, float x, float y);

        void adaptButtonPress(double t,float x, float y, unsigned int button);
        
        void adaptButtonRelease(double t,float x, float y, unsigned int button);

        /** method for adapting keyboard events.*/
        void adaptKeyPress( double t, Producer::KeySymbol key);

        void adaptKeyRelease( double t, Producer::KeySymbol key);

        /** method for adapting frame events, i.e. idle/display callback.*/
        void adaptFrame(double t);


        void copyStaticVariables();

    public:

        EventType _eventType;
        int _key;
        int _button;
        float _Xmin,_Xmax;
        float _Ymin,_Ymax;
        float _mx;
        float _my;
        unsigned int _buttonMask;
        unsigned int _modKeyMask;
        double _time;

    public:

        // used to accumulate the button mask state, it represents
        // the current button mask state, which is modified by the
        // adaptMouse() method which then copies it to value _buttonMask
        // which required the mouse buttons state at the time of the event.
        static unsigned int _s_accumulatedButtonMask;
        
        // used to store current button value
        static int _s_button;

        // used to store window min and max values.
        static float _s_Xmin;
        static float _s_Xmax;
        static float _s_Ymin;
        static float _s_Ymax;
        static float _s_mx;
        static float _s_my;
        static int _s_modKeyMask;
        
};

}

#endif