#ifndef __PLANE_H__
#define __PLANE_H__

#include "qwt3d_global.h"
#include "qwt3d_drawable.h"
#include "qwt3d_axis.h"
#include "qwt3d_color.h"

namespace Qwt3D
{

//! A flat color legend
/**
	The class visualizes a ColorVector together with a scale (axis)  and a caption. ColorLegends are vertical 
	or horizontal
*/
class QWT3D_EXPORT ColorLegend : public Drawable
{

public:
	
    //! Possible anchor points for caption and axis
    enum SCALEPOSITION
    {
        Top,      //!< scale on top
        Bottom,   //!< scale on bottom
        Left,     //!< scale left
        Right     //!< scale right
    };

    //! Orientation of the legend
    enum ORIENTATION
    {
        BottomTop, //!< Positionate the legend vertically, the lowest color index is on the bottom
        LeftRight  //!< Positionate the legend horizontally, the lowest color index is on left side
    };

    ColorLegend(); //!< Standard constructor

    Qwt3D::Axis *axis(){return &axis_;};//! < Returns a pointer to the axis object.
    bool isAxisEnabled(){return showaxis_;}; //! Returns true if the legend scale is displayed.
    void draw(); //!< Draws the object. You should not use this explicitly - the function is called by updateGL().

    void setRelPosition(Qwt3D::Tuple relMin, Qwt3D::Tuple relMax); //!< Sets the relative position of the legend inside widget
    void setOrientation(ORIENTATION, SCALEPOSITION); //!< Sets legend orientation and scale position
    void setLimits(double start, double stop); //!< Sets the limit of the scale.
    void setMajors(int); //!< Sets scale major tics.
    void setMinors(int); //!< Sets scale minor tics.
    void drawScale(bool val) { showaxis_ = val; } //!< Sets whether a scale will be drawn.
    void drawNumbers(bool val) { axis_.setNumbers(val); } //!< Sets whether the scale will have scale numbers.
    void setAutoScale(bool val); //!< Sets, whether the axis is autoscaled or not.
    void setScale(Qwt3D::Scale *scale); //!< Sets another scale
    void setScale(Qwt3D::SCALETYPE); //!< Sets one of the predefined scale types

    void setTitleString(QString const& s); //!< Sets the legends caption string.

    //! Sets the legends caption font.
    void setTitleFont(QString const& family, int pointSize, int weight = QFont::Normal, bool italic = false);

    Qwt3D::ColorVector colors; //!< The color vector
	virtual void setPlot(Plot3D *plot);

    private:

    Qwt3D::Label caption_;
    Qwt3D::ParallelEpiped geometry() const { return pe_;}
    void setGeometryInternal();

    Qwt3D::ParallelEpiped pe_;
    Qwt3D::Tuple relMin_, relMax_;
    Qwt3D::Axis axis_;
    SCALEPOSITION axisposition_;
    ORIENTATION orientation_;

    bool showaxis_;
};

} // ns

#endif
