Slider.h

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#pragma once

#include "GUI_item.h"

using namespace vrecko;

#  ifdef GUI_LIBRARY
#    define GUI_EXPORT   __declspec(dllexport)
#  else
#    define GUI_EXPORT   __declspec(dllimport)
#endif

namespace APGUI
{


class GUI_EXPORT Slider : public GUI_Item
{
public:

    Slider();
    ~Slider();

    bool createModels(string geometryType);

    bool initialize(string name, string receiver, string label, string tooltip, osg::Vec3 position = osg::Vec3() );

    bool initialize(XERCES_CPP_NAMESPACE_QUALIFIER DOMNode *parametersNode);

    osg::ref_ptr<GUI_Text> getText() { return _text; }

    inline double getValue() { return _oldValue; }

    bool processAction( const int sensorNumber, const GUI_ACTION action, const bool pressed);

    virtual void pointed(bool pointed);

    void setColours( osg::Vec4 colourActive, osg::Vec4 colourDefault, osg::Vec4 colourHovered, osg::Vec4 colourPressed, osg::Vec4 colourDisabled );

    void setSliderParameters( double width, double heigh, double minValue, double MaxValue, double step );

    void setState(GUI_ITEM_STATE newState); 

    void setValue( double value );

    void update();


protected:

    int _sensorNumber;

    double _oldValue;
    double _minimumValue;
    double _maximumValue;
    double _step;

  // Visuals

    double _width;
    double _height;

    // static part of slider
    osg::ref_ptr<osg::Switch> _staticModel;

    // movable part of slider
    osg::ref_ptr<osg::MatrixTransform> _movableTransform;
    osg::ref_ptr<osg::Switch> _movableModel;

    // text of slider
    osg::ref_ptr<GUI_Text> _text;
    
    
    void createGeometry();
    void setAndSendValue( double value );

    void sendValue( double value );

    void switchVisuals();

    void updateSlider( osg::Vec3 handPosition );

    osg::Vec3 transformHandPosition( osg::Vec3 &handPosition );


    int Slider::intersectSegmentandPlane( osg::Vec3 point0, osg::Vec3 point1, osg::Vec3 planeNormal, osg::Vec3 planePoint, osg::Vec3 *resultPoint );


    bool postInitialize(string name, string receiver, string label, string tooltip, osg::Vec3 position );

    DECLARE_INPUT(SliderValue, MessageFloat);
    
    DECLARE_OUTPUT(GUIItemClicked, MessageString);

    DECLARE_REQUEST_OUTPUT(SensorPosition, MessageInt, MessageVec3);

    void processInputPosition( int sensor_num, osg::Vec3 pos );
    
};

}