TGo4LabelPainter.h

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//-------------------------------------------------------------
//        Go4 Release Package v3.04-01 (build 30401)
//                      28-November-2008
//---------------------------------------------------------------
//   The GSI Online Offline Object Oriented (Go4) Project
//   Experiment Data Processing at EE department, GSI
//---------------------------------------------------------------
//
//Copyright (C) 2000- Gesellschaft f. Schwerionenforschung, GSI
//                    Planckstr. 1, 64291 Darmstadt, Germany
//Contact:            http://go4.gsi.de
//----------------------------------------------------------------
//This software can be used under the license agreements as stated
//in Go4License.txt file which is part of the distribution.
//----------------------------------------------------------------
#ifndef TGO4LABELPAINTER_H
#define TGO4LABELPAINTER_H

#include "TPaveText.h"
#include "TLine.h"
#include "TNamed.h"
#include "TAttLine.h"
#include "TAttFill.h"
#include "TAttText.h"

class TGo4Label : public TPaveText {

  public:
    TGo4Label(): TPaveText(), fxOwner(0) { SetBit(kMustCleanup);}
    TGo4Label(Double_t x1, Double_t y1, Double_t x2, Double_t y2, Option_t* option = "br")
    : TPaveText(x1,y1,x2,y2,option),fxOwner(0) { SetBit(kMustCleanup); }

    virtual ~TGo4Label(){fxLastDeleted=(char*) this;}
    void SetOwner(TObject* ob){fxOwner=ob;}

    virtual void Paint(Option_t* opt="");

    virtual void ExecuteEvent(Int_t event, Int_t px, Int_t py);

    static char* fxLastDeleted;

  private:
    TObject* fxOwner;
  ClassDef(TGo4Label,7)
};

class TGo4LabelConnector : public TLine {

  public:
    TGo4LabelConnector(): TLine(), fxOwner(0) { SetBit(kMustCleanup); }
    TGo4LabelConnector(Double_t x1, Double_t y1, Double_t x2, Double_t y2)
    : TLine(x1,y1,x2,y2),fxOwner(0) { SetBit(kMustCleanup); }

    virtual ~TGo4LabelConnector(){fxLastDeleted=(char*) this;};
    void SetOwner(TObject* ob){fxOwner=ob;}

    virtual void Paint(Option_t* opt="");
    
    static char* fxLastDeleted;

  private:
    TObject* fxOwner;
  ClassDef(TGo4LabelConnector,6)
};


class TGo4LabelPainter : public TNamed, public TAttLine, public TAttFill, public TAttText {
  public:
    TGo4LabelPainter();
    TGo4LabelPainter(const Text_t * name);
    TGo4LabelPainter(const Text_t * name, const Text_t * title);
    virtual ~TGo4LabelPainter();

    virtual void PaintLabel(Option_t* opt="");

    virtual void UnPaintLabel(Option_t* opt="");

    virtual void RePaintLabel(Option_t* opt="");

    virtual void DisplayToFront(Option_t* opt="");

    void SetCaption(const Text_t* txt){fxCaption=txt;}
    void SetX0(Double_t x=0){fdX0=x;}
    void SetY0(Double_t y=0){fdY0=y;}
    void SetWidth(Double_t w=0){fdWidth=w;}
    void SetHeight(Double_t h=0){fdHeight=h;}

    void AddToLabel(const Text_t* txt) { if(fxLabel) fxLabel->AddText(txt); }

    void InitAttributes();

    Double_t GetLabelXlo();

    Double_t GetLabelYlo();

    Double_t GetLabelXup();

    Double_t GetLabelYup();

   private:
     TGo4Label* fxLabel;

    Double_t fdX0;

    Double_t fdY0;

    Double_t fdWidth;

    Double_t fdHeight;

    TString fxCaption;

    Bool_t fbIsLabStreamed; 

    TGo4Label* CreateCurrentLabel(Double_t x, Double_t y);

    void LabelCoords(Double_t &xmin, Double_t &ymin, Double_t &xmax, Double_t &ymax);

    Bool_t CheckLabel();

  ClassDef(TGo4LabelPainter,6)
};

#endif //TGO4LABELPAINTER_H

//----------------------------END OF GO4 SOURCE FILE ---------------------

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