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histogramdlg.h

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#ifndef HISTOGRAMDLG_H
#define HISTOGRAMDLG_H

// QT
#include <qwidget.h>
#include <qcolor.h>
#include <qmenubar.h>
#include <qaction.h>
#include <qpainter.h>
#include <qpixmap.h>
#include <qpointarray.h>
#include <qcursor.h>
#include <qapplication.h>

// STDLIB
#include <vector>
#include <stack>
#include <cstdio>

// LOCAL
#include "histogramdatasource.h"
#include "histogramuser.h"


class HistogramDataSource;

typedef struct {
  int scaleW;         
  int graphBorderW;   
  int topY;           
  int winW;           
  int winH;           
  int graphW;         
  int graphH;         
  int graphZeroX;     
  int graphMaxX;      
  int graphZeroY;     
  int graphMaxY;      
} DspDims;

typedef struct {
  int  mPointMoving;  
  bool mLeftDown;     
  bool mMidDown;      
  bool mRightDown;    
  int  mMouseX;       
  int  mMouseY;       
} MouseState;


typedef struct {
  vector<HistogramDataSource*> HDS;         
  vector<QAction*>             actSet;      
  int                          curHDS;      
  HistogramSet                 histSet;     
  int                          curHist;     
  QPointArray                  dataPnts[3]; 
} HDSSet;

typedef struct {
  stack<QPointArray>  lineSet[3]; 
  stack<QPointArray>  redoSet;    
  int                 curLine;    
  QPointArray         *curArr;    
  bool                isChanging; 
  bool                isMerged;   
} StretchLineSet;

class HistogramDlg : public QWidget {
  Q_OBJECT
  public:

  protected:
  QMenuBar            *mMenuBar;   

  MouseState          mMouse;      
  StretchLineSet      mSLSet;      
  HDSSet              mHDS;        

  HistogramUser       *mHistUser;  

  vector<QAction*>    mPercentAct; 
  QAction             *mMergeAct;  
  QActionGroup    *mDSActGroup;
  QPopupMenu      *mDSMenu;
  vector<QAction*>    mColorAct;   

  DspDims             mDspDims;    
  DspDims             mOldDspDims; 

  DspDims calcDspDims( );

  void init( );
  void buildMenuBar( );
  bool mouseInGraph( );
  int  mouseOnPoint( );
  void createDataPnts( );
  void alertUser( );
  void initPntsFromUser( );

public:
  HistogramDlg( QWidget *parent );
  HistogramDlg( QWidget *parent,
                vector<HistogramDataSource*> hds,
                HistogramUser *huser=NULL );

  void mousePressEvent( QMouseEvent * );
  void mouseReleaseEvent( QMouseEvent * );
  void mouseMoveEvent( QMouseEvent * );
  void mouseDoubleClickEvent( QMouseEvent * );
  void paintEvent( QPaintEvent *pe );
  void resizeEvent( QResizeEvent *re );

  void addHDS( HistogramDataSource *hds );
  void setHDS( vector<HistogramDataSource*> hds );
  void setUser( HistogramUser *user );

public slots:
  void        changeToRed( );
  void        changeToBlue( );
  void        changeToGreen( );
  void        changeToAll( );
  void        changeDataSource( );
  void        bestFit( );
  void        mergeAll( );
  void        clearPoints( );
  void        undoToLast( );
  void        redoToPrev( );
  void        reloadHistSet( );
  void        calcPercent( );
};

#endif

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