#ifndef ICL_PLOT_WIDGET_H
#define ICL_PLOT_WIDGET_H

#include <QGLWidget>
#include <QColor>
#include <vector>

#include <ICLUtils/Range.h>
#include <ICLUtils/SteppingRange.h>
#include <ICLQt/GUI.h>
#include <vector>

namespace icl{
  class PlotWidget : public QGLWidget{
    Q_OBJECT
    public:
    /// internal hidden data structure
    struct Data;
    
    /// Funtion type
    struct Function{
      virtual inline Range32f yrange(){ return Range32f(0,0); }
      virtual float operator()(float x)=0;
      
      std::vector<float> operator()(const std::vector<float> &xs);
      std::vector<float> &operator()(const std::vector<float> &xs, std::vector<float> &dst);
      
      virtual inline QColor getColor() { return QColor(255,0,0,0); }
    };
    
    
    PlotWidget(bool withControlGUI=true, QWidget *parent=0);
    ~PlotWidget();
    
    virtual void paintEvent(QPaintEvent *e);

    void addFunction(Function *f);
    void deleteFunction(Function *f);
    void removeFunction(Function *f);
    
    void deleteAllFunctions();
    void removeAllFunctions();

    /// by default 5 pixels
    void setMargins(int left, int top, int right, int bottom);
    void setXTicsSpacing(float val);
    void setYTicsSpacing(float val);
    void setXRange(const SteppingRange<icl32f> &xs);
    void setXValues(const std::vector<icl32f> &xs);
    
    public slots:

    void setFillModeEnabled(bool enabled);
    void setLogModeEnabled(bool enabled);
    void setAccuModeEnalbed(bool enabled);
    void setAAMode(bool enabled);
    
    /// how to blur functions (none, mean3, mean5, median)
    void setBlurModeEnabled(const QString &mode);
    
    void setControlGUIEnabled(bool enabled);

    void selectFunction(int index);
    void deselectFunction();
    
    void setXTicsEnabled(bool enabled);
    void setYTicsEnabled(bool enabled);
    void setTicLablesEnabled(bool enabled);
    
    private:
    Data *m_data;
  };
}

#endif