HistogramWidget.h

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#ifndef __HISTOGRAMW__
#define __HISTOGRAMW__


// ----------------------------------------------------------------------------
// wx headers inclusion.
// For compilers that support precompilation, includes <wx/wx.h>.
// ----------------------------------------------------------------------------
#include <wx/wxprec.h>
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif

#include "marTypes.h"
#include "pPlotter.h"
#include "pFunctionPoint.h"
#include  "vtkImageData.h"
#include "pHistogram.h"
#include "pPlotterScaleY.h"
#include "pPlotterScaleX.h"

//#define MAX 500
#define NUM_POINTS 100
#define WINDOW_SIZE 10

class creaMaracasVisu_EXPORT HistogramWidget:public wxPanel
{
public:
        //---------------------
        // Constructor
        //----------------------

        //HistogramWidget( wxWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size, int flag );
        
 
        HistogramWidget( wxWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size, int flag,vtkImageData* imageData,int type);

        HistogramWidget( wxWindow *parent, wxWindowID id);
        
        ~HistogramWidget();

        /*
        Draw the histogram in the plotter
        */
        void drawHistogram();
        /*
        Draw the transference function in the plotter
        */
        void drawTransferenceFunction();
        /*
                if the user resize the window   
        */
        void OnSize( wxSizeEvent &WXUNUSED(event) );
        //---------------------------------------
        // Get Information from the widget
        //---------------------------------------
        /*
                get number of points of the transference function
        */
        int getSizeTransferenceFunction();
        /*
                get number of points of the barColor
        */
        int getSizeBarColor();
        /*
                get a point of the transference function
        */
        void getTransferenceFunctionPoint(int index,int& x,int& y);
        /*
                get a  color int the bqr color
        */
        void getDataBarColorPoint(int index,int&x, int& red,int& green,int& blue);
        /*
                get a point of the Histogram
                given the grey value
        */
        int getHistogramPoint(int gValue);

        //--------------------
        // bar Information
        //---------------------
        /*
         Get the porcentage of the positions of 
         the min,max and actual in the bar range
        */
        float getMaxShowedPorcentage();
        float getMinShowedPorcentage(); 
        float getActualShowedPorcentage();      

        //---------------------------------------
        // setting data in transferences function
        // and in bar color
        //----------------------------------------
        /*
          Adds a point to the transference function
        */
        bool addPointToTransferenceFunction(double x, double y);
        /*
                add a color point to the histogram
                @param x the level of grey to which the color is assigned
                @param red the level of red for the color
                @param green the level of red for the color
                @param blue the level of red for the color
        */
        bool addColorPoint(double x,int red,int green, int blue);
        //--------------------
        // plotter Information
        //---------------------
        void updatePlotter();
        
        //------------------------
        //Erase data
        //------------------------
        

        /*
         Erase all the points that are in the transference function
        */
        void erasePointsTransferenceFunction();
        /*
        Erase the  color points in the plotter
        */
        void eraseColorPoints();

        //-------------------
        // Getter and setters
        //-------------------

        void setTransferenceFunctionHasPoints(bool hasPoints);
        void setTransferenceFunctionHasColor(bool hasColorPoints);
        int getHistogramSize();
        void setType(int type);

        void initializeHistogram(vtkImageData* img);
        void GetValuesPointsFunction(std::vector<double>& greylevel,std::vector<double>& value);

        void GetValuesColorPointsFunction(std::vector<double>& greylevel,
                                                                        std::vector<double>& red,
                                                                        std::vector<double>& green,
                                                                        std::vector<double>& blue);


        
private:
        
         pHistogram* histogram;
         pPlotter* plotter;
         int idTransferenceFunction;
         int histogramSize;
         int idHistogram;
         /*
          if the image has already a transference
          function and color defines to that function
          we have to draw it in the widget
         */
         bool transferenceFunctionHasPoints;
         bool transferenceFunctionHasColor;
         wxPanel* getControls();
         /*
         * type=1 with transference function for moving
         * type=2 without transference function for moving
         */
         int type;      
         
         DECLARE_CLASS(HistogramWidget);
         //----------------------------------------------------------------------------
        // wxWidget macro use declaration for handdling events
        //----------------------------------------------------------------------------
        DECLARE_EVENT_TABLE()
        
};
#endif