GSI Object Oriented Online Offline (Go4): Go4ConditionsBase/TGo4MarkerPainter.cxx Source File

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00001 // $Id: TGo4MarkerPainter.cxx 999 2013-07-25 11:58:59Z linev $
00002 //-----------------------------------------------------------------------
00003 //       The GSI Online Offline Object Oriented (Go4) Project
00004 //         Experiment Data Processing at EE department, GSI
00005 //-----------------------------------------------------------------------
00006 // Copyright (C) 2000- GSI Helmholtzzentrum f�r Schwerionenforschung GmbH
00007 //                     Planckstr. 1, 64291 Darmstadt, Germany
00008 // Contact:            http://go4.gsi.de
00009 //-----------------------------------------------------------------------
00010 // This software can be used under the license agreements as stated
00011 // in Go4License.txt file which is part of the distribution.
00012 //-----------------------------------------------------------------------
00013 
00014 #include "TGo4MarkerPainter.h"
00015 
00016 #include "TROOT.h"
00017 #include "TList.h"
00018 #include "TVirtualPad.h"
00019 #include "snprintf.h"
00020 
00021 #include "TGo4Marker.h"
00022 #include "TH1.h"
00023 
00024 TGo4MarkerPainter::TGo4MarkerPainter() :
00025    TGo4LabelPainter(),
00026    fxMarker(0),
00027    fxConnector(0),
00028    fbIsConStreamed(kTRUE)
00029 {
00030 }
00031 
00032 TGo4MarkerPainter::TGo4MarkerPainter(const char* name, const char* title) :
00033     TGo4LabelPainter(name, title),
00034     fxMarker(0),
00035     fxConnector(0),
00036     fbIsConStreamed(kFALSE)
00037 {
00038 }
00039 
00040 TGo4MarkerPainter::~TGo4MarkerPainter()
00041 {
00042    if (fxConnector!=0) {
00043       delete fxConnector;
00044       fxConnector = 0;
00045    }
00046 }
00047 
00048 
00049 
00050 void TGo4MarkerPainter::PaintLabel(Option_t* opt)
00051 {
00052 if(gPad==0) return;
00053 if(fxMarker && fxMarker->HasLabel())
00054    {
00055       //------ find out initial coordinates for labels near marker boundaries:
00056       Double_t xoff=0.015*(gPad->GetUxmax()-gPad->GetUxmin());
00057       Double_t yoff=0.015*(gPad->GetUymax()-gPad->GetUymin()); // offset is in pad coordinates
00058       Double_t xpmin=gPad->PadtoX(gPad->XtoPad(fxMarker->GetLabelX())+xoff);
00059       Double_t ypmin=gPad->PadtoY(gPad->YtoPad(fxMarker->GetLabelY())+yoff);
00060       Bool_t drx=fxMarker->IsXDraw();
00061       Bool_t dry=fxMarker->IsYDraw();
00062       Bool_t drxbin=fxMarker->IsXbinDraw();
00063       Bool_t drybin=fxMarker->IsYbinDraw();
00064       Bool_t drcont=fxMarker->IsContDraw();
00065       TString fmt=fxMarker->GetNumFormat();
00066       SetX0(xpmin);
00067       SetY0(ypmin); // initial coordinates are real axis coordinates
00068       SetLineColor(fxMarker->GetMarkerColor());
00069       //SetTextColor(fxMarker->GetMarkerColor());
00070       TString cap=fxMarker->GetName();
00071       TH1* his=fxMarker->GetHistogram();
00072       if(his)
00073          {
00074             cap+=":";
00075             cap+=his->GetName();
00076          }
00077       SetCaption(cap.Data());
00078       TGo4LabelPainter::PaintLabel();// this creates new label
00079       if(drx)
00080          AddToLabel(Form(Form("X    = %s",fmt.Data()),fxMarker->GetX()));
00081       if(dry)
00082          AddToLabel(Form(Form("Y    = %s",fmt.Data()),fxMarker->GetY()));
00083       if(drxbin)
00084          AddToLabel(Form("Xbin = %d",fxMarker->GetXbin()));
00085       if(drybin)
00086          AddToLabel(Form("Ybin = %d",fxMarker->GetYbin()));
00087       if(drcont)
00088          AddToLabel(Form("C    = %d",fxMarker->GetCont()));
00089       RePaintLabel();
00090       PaintConnector();
00091    }//if(fxMarker && fxMarker->HasLabel())
00092 else
00093    {
00094       UnPaintLabel();
00095    }
00096 }
00097 
00098 void TGo4MarkerPainter::UnPaintLabel(Option_t* opt)
00099 {
00100 if(gPad==0) return;
00101 TGo4LabelPainter::UnPaintLabel(opt);
00102 UnPaintConnector(opt);
00103 }
00104 
00105 
00106 Bool_t TGo4MarkerPainter::CheckConnector()
00107 {
00108    if(fbIsConStreamed && fxConnector!=0) {
00109        // case of Connector was streamed from file: not yet in cleanup list!
00110        fxConnector->SetOwner(this);
00111        fbIsConStreamed=kFALSE;
00112        return kTRUE;
00113    }
00114     if(TGo4LabelConnector::fxLastDeleted==(char*) fxConnector)
00115       {
00116          // our label was deleted by user mouse menu just before
00117          TGo4LabelConnector::fxLastDeleted=0;
00118          fxConnector=0; // reset reference, will re-create label on next paint
00119          return kFALSE;
00120       }
00121 
00122 
00123    return fxConnector!=0;
00124 }
00125 
00126 void TGo4MarkerPainter::PaintConnector(Option_t* opt)
00127 {
00128    if(gPad==0) return;
00129    if(fxMarker && fxMarker->HasConnector()) {
00130       Double_t xmark=0;
00131       Double_t ymark=0;
00132       Double_t xmark0=fxMarker->GetX();
00133       Double_t ymark0=fxMarker->GetY();
00134       Double_t xlab,ylab;
00135       Double_t xlablo=GetLabelXlo();
00136       Double_t ylablo=GetLabelYlo();
00137       Double_t xlabup=GetLabelXup();
00138       Double_t ylabup=GetLabelYup();
00139       Double_t xlabmid=0.5*(xlabup+xlablo);
00140       Double_t ylabmid=0.5*(ylabup+ylablo);
00141       xlablo=gPad->PadtoX(xlablo);
00142       ylablo=gPad->PadtoY(ylablo);
00143       xlabup=gPad->PadtoX(xlabup);
00144       ylabup=gPad->PadtoY(ylabup);
00145       xlabmid=gPad->PadtoX(xlabmid);
00146       ylabmid=gPad->PadtoY(ylabmid);
00147       // evaluate connection to nearest label edge or side centre:
00148       if(TMath::Abs(xlablo-xmark0) < TMath::Abs(xlabup-xmark0))
00149          {
00150             if(TMath::Abs(xlablo-xmark0) < TMath::Abs(xlabmid-xmark0))
00151                xlab=xlablo;
00152             else
00153                xlab=xlabmid;
00154          }
00155       else
00156          {
00157             if(TMath::Abs(xlabup-xmark0) < TMath::Abs(xlabmid-xmark0))
00158                xlab=xlabup;
00159             else
00160                xlab=xlabmid;
00161          }
00162 
00163       if(TMath::Abs(ylablo-ymark0) < TMath::Abs(ylabup-ymark0))
00164          {
00165              if(TMath::Abs(ylablo-ymark0) < TMath::Abs(ylabmid-ymark0))
00166                ylab=ylablo;
00167              else
00168                ylab=ylabmid;
00169          }
00170       else
00171          {
00172             if(TMath::Abs(ylabup-ymark0) < TMath::Abs(ylabmid-ymark0))
00173                ylab=ylabup;
00174             else
00175                ylab=ylabmid;
00176          }
00177       // offset from marker center:
00178       Double_t f=0.92; // fraction of direct distance between marker and label
00179       // we calculate connector geometry in pad coordinates for log scale!
00180       Double_t xmark_pad=0;
00181       Double_t ymark_pad=0;
00182       Double_t xlab_pad=gPad->XtoPad(xlab);
00183       Double_t ylab_pad=gPad->YtoPad(ylab);
00184       Double_t xmark0_pad=gPad->XtoPad(xmark0);
00185       Double_t ymark0_pad=gPad->YtoPad(ymark0);
00186 //      if(gPad->GetLogx() || gPad->GetLogy())
00187 //         {
00188 //            //std::cout <<"using percentage for f" << std::endl;
00189 //            f=0.95;
00190 //         }
00191 //      else
00192 //         {
00193 //            // note: this method only works if we have equal axis scaling in x and y!
00194 //            //std::cout <<"using roff for f" << std::endl;
00195 //            Double_t dr=TMath::Sqrt(TMath::Power(xlab-xmark0,2) + TMath::Power(ylab-ymark0,2));
00196 //            Size_t msize=fxMarker->GetMarkerSize();
00197 //            Double_t xoff=0.008*msize*(gPad->GetUxmax()-gPad->GetUxmin());
00198 //            Double_t yoff=0.008*msize*(gPad->GetUymax()-gPad->GetUymin());
00199 //            Double_t roff= TMath::Sqrt(TMath::Power(xoff,2) + TMath::Power(yoff,2));
00200 //            if(dr) f=1- roff/dr;// we do it relative to marker size
00201 //         }
00202 //      std::cout <<"f="<<f << std::endl;
00203       if(xlab_pad>xmark0_pad)
00204             xmark_pad=xlab_pad-f*(xlab_pad-xmark0_pad);
00205       else
00206             xmark_pad=xlab_pad+f*(xmark0_pad-xlab_pad);
00207       if(ylab_pad>ymark0_pad)
00208             ymark_pad=ylab_pad-f*(ylab_pad-ymark0_pad);
00209       else
00210             ymark_pad=ylab_pad+f*(ymark0_pad-ylab_pad);
00211 
00212       xmark=gPad->PadtoX(xmark_pad); // back to real axis coordinates
00213       ymark=gPad->PadtoY(ymark_pad);
00214       if(!CheckConnector()) {
00215          // connection line not existing or deleted by root:
00216          fxConnector=new TGo4LabelConnector(xmark,ymark,xlab,ylab);
00217          fxConnector->SetOwner(this);
00218          fxConnector->SetLineStyle(4);
00219          fxConnector->AppendPad();
00220       } else {
00221          // connection line is still exisiting:
00222          if (gPad->GetListOfPrimitives()->FindObject(fxConnector)==0)
00223             fxConnector->AppendPad();// connection line was removed from pad, we redraw it:
00224          fxConnector->SetX1(xmark);
00225          fxConnector->SetY1(ymark);
00226          fxConnector->SetX2(xlab);
00227          fxConnector->SetY2(ylab);
00228       }
00229       fxConnector->SetLineColor(fxMarker->GetMarkerColor());
00230       //fxConnector->Paint(); // for direct update of view
00231    }
00232 else
00233    {
00234       UnPaintConnector(opt);
00235    }
00236 }
00237 
00238 void TGo4MarkerPainter::UnPaintConnector(Option_t* opt)
00239 {
00240    TString option=opt;
00241    if(option.Contains("reset")) {
00242       // case of reset option: discard old connector line style
00243       if(CheckConnector()) {
00244          delete fxConnector;
00245          fxConnector=0;
00246       }
00247    }
00248 }
00249 
00250 void TGo4MarkerPainter::DisplayToFront(Option_t* opt)
00251 {
00252 UnPaintConnector();
00253 PaintConnector(); // pop line to front if enabled
00254 if(fxMarker) fxMarker->TObject::Pop(); // then pop marker
00255 TGo4LabelPainter::DisplayToFront(opt); // label itself will be frontmost
00256 }
00257 
00258