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/Go4QtBaseWidgets/TGo4QGraphItem.cpp

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//---------------------------------------------------------------
//        Go4 Release Package v2.10-5 (build 21005) 
//                      03-Nov-2005
//---------------------------------------------------------------
//       The GSI Online Offline Object Oriented (Go4) Project
//       Experiment Data Processing at DVEE 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.
//----------------------------------------------------------------
#include "TGo4QGraphItem.h"

#include <iostream.h>

#include "TPad.h"
#include "TGraph.h"

#include "Go4GUIRegistry/TGo4GUIRegistry.h"
#include "Go4GUI/TGo4PreviewPanel.h"
#include "Go4GUI/TGo4MonitoredObject.h"
#include "Go4GUI/TGo4BrowserSlots.h"
#include "Go4GUI/TGo4BrowserStatus.h"
#include "Go4GUI/TGo4Browser.h"
#include "Go4GUI/TGo4QRootCanvas.h"

TGo4QGraphItem::TGo4QGraphItem( QListViewItem* parent, const QString & text, const QString & text1,  const QString & text2)
   :TGo4QTHItem (parent, "tgraph.png", text, text1, text2)
{
}

TGo4QGraphItem::TGo4QGraphItem( QListView* parent, const QString & text, const QString & text1,  const QString & text2)
   :TGo4QTHItem (parent, "tgraph.png", text, text1, text2)
{
}

TGo4QGraphItem::~TGo4QGraphItem(){}

void TGo4QGraphItem::DrawObj(TGo4PreviewPanel *viewpanel, TPad* currentpad)
{
   if(!AssignDrawPanel(viewpanel, currentpad)) return;
   TGraph* Gr=dynamic_cast<TGraph *> (GetWorkObject());
   if(Gr!=0 && Gr->GetN()>=1)
      {
         QString realname=Gr->GetName();
         TGo4BrowserSlots* browserslots = dynamic_cast <TGo4BrowserSlots *>(fxTGo4GUIRegistry->GetSlotClass("TGo4BrowserSlots"));
         TGo4Browser* browser=browserslots->GetBrowserGUI();
         if(InFileBrowser())
            {
               if(browserslots)  //browserslots->AddObjectToLocalList(hist,false);
               {
                browserslots->AddObject(Gr,fxDrawPanel->GetQCanvas(),fxDrawPad);
                realname=browserslots->GetAddedItemName();
                //cout <<"DrawObj in file browser sends to membrowser" << endl;
               // if item was already there with reference to another pad,
               // we have to redraw it on the drop pad               
               fxDrawPad->cd();
               TGo4QItem *memitem = (TGo4QItem*) browser->ListViewLocal->findItem(realname,0);
               if (memitem!=0)
                  {
                     memitem->DrawObj(fxDrawPanel,fxDrawPad);
                  }
               }// if(browserslots)
            } // if(InFileBrowser())
         else
            {
               TPad* padsav=fxDrawPanel->GetActivePad();
               fxDrawPanel->SetActivePad(fxDrawPad);
               fxDrawPanel->ClearPad();
               Gr->Draw("AP");
               fxDrawPanel->UpdatePad(fxDrawPad, Gr->GetHistogram(),false);
               fxDrawPanel->SetActivePad(padsav);
            }
      } //if(Gr!=0 && Gr->GetN()>=1)
}

void TGo4QGraphItem::UpdateOnline(TObject *fxObj)
{
bool keepscale=IsKeepScale();
TGraph* LocalGraph=dynamic_cast <TGraph*>(GetWorkObject());
TGraph* NewGraph=dynamic_cast <TGraph*>(fxObj);
if(LocalGraph )
   {
   if(LocalGraph->GetN()>=1)
      {
      TH1* axeshistogram=LocalGraph->GetHistogram();
      Int_t xminbin=0;
      Int_t xmaxbin=0;
      Double_t ymin=0;
      Double_t ymax=0;
      if(keepscale && axeshistogram)
         {
         xminbin=axeshistogram->GetXaxis()->GetFirst();
         xmaxbin=axeshistogram->GetXaxis()->GetLast();
         ymin=axeshistogram->GetMinimum();
         ymax=axeshistogram->GetMaximum();
         }
      // reset graph on canvas:
      LocalGraph->Set(0); // clear array of points
      // copy contents of new graph to old one:
      Int_t pn=NewGraph->GetN();
      Double_t xp=0;
      Double_t yp=0;
      for(Int_t i=0; i<pn; ++i)
         {
           NewGraph->GetPoint(i,xp,yp);
           LocalGraph->SetPoint(i,xp,yp);
         }
      axeshistogram=LocalGraph->GetHistogram();
      if(keepscale && axeshistogram)
         {
         TAxis* xax=axeshistogram->GetXaxis();
         if(xax) xax->SetRange(xminbin,xmaxbin);
         LocalGraph->SetMinimum(ymin);
         LocalGraph->SetMaximum(ymax);
         }
      else
         {
          if(axeshistogram)
              {
              axeshistogram->ResetBit(TH1::kIsZoomed);
              Double_t oldmin=0;
              Double_t oldmax=0;
              TH1* newhis=NewGraph->GetHistogram();
              if(newhis)
                 {
                     oldmin=newhis->GetMinimum();
                     oldmax=1.1 * newhis->GetMaximum();
                 }
              LocalGraph->SetMinimum(oldmin);
              LocalGraph->SetMaximum(oldmax);
              }
         }
      } // if(LocalGraph->GetN()>=1)
   else
      {
          // case of graph without points: replace old and draw
          TGo4QItem::UpdateOnline(fxObj); // overwrite local object in memory list
          DrawObj(fxDrawPanel);
      }
   UpdateDrawPad();
}// if(LocalGraph)

}

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

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