Re: mouse button: 2 questions

From: <alexis.cothenet_at_free.fr>
Date: Thu, 14 Apr 2005 09:40:06 +0200

Wonderful!!Thank you a lot!

Regards,
Alexis

Selon Rene Brun <brun_at_pcroot.cern.ch>:

> Alexis,
>
> Note that what you try to do is already provided by the graphics editor
> ::)
>
> Anyhow, I suggest the simple modification in your script as shown below.
> You start in input mode. you can enter markers.
> As soon as you want to edit, press any key while your mouse is in the
> canvas. To toggle input mode again, press again any key.
>
> Rene Brun
>
>
> void test() {
>
> TH1F * hALL = new TH1F("hALL","hALL",100,-3,3);
> //TFile f("test.root","READ") ;
> hALL->FillRandom("gaus",1000);
> TCanvas * c1 = new TCanvas("c1");
> hALL->Draw();
> c1->Update();
> c1->AddExec("test","exectest()");
>
> }
>
> void exectest(){
>
> int event = gPad->GetEvent();
> float iix = gPad->GetEventX();
> float iiy = gPad->GetEventY();
> float roix = gPad->AbsPixeltoX(iix);
> float roiy = gPad->AbsPixeltoY(iiy);
>
> static Bool_t edit = kFALSE;
> if (event == 24) { //when typing a keyboard key in the pad
> if (edit) {edit = kFALSE; printf("switching to input mode\n");}
> else {edit = kTRUE; printf("switching to edit mode\n");}
> }
> if (event == 1 && !edit){ //button down
>
> TMarker *m = new TMarker(roix, roiy, 800) ;
> printf("creating new TMarker at %x\n",m);
> m->SetMarkerStyle(3);
> m->SetMarkerColor(2);
>
> m->Draw("SAME");
>
>
> }
>
> }
>
>
>
> On
> Thu, 14 Apr 2005, Alexis Cothenet wrote:
>
> >
> > Hi Rene,
> >
> > Thank you. You were right now it works for both cases.
> > So, in the macro i do:
> > void exectest(){
> > int event = gPad->GetEvent();
> > float iix = gPad->GetEventX();
> > float iiy = gPad->GetEventY();
> > float roix = gPad->AbsPixeltoX(iix);
> > float roiy = gPad->AbsPixeltoY(iiy);
> >
> > if (event == 1){ //button down
> >
> > TMarker *m = new TMarker(roix, roiy, 800) ;
> > m->SetMarkerStyle(3);
> > m->SetMarkerColor(2);
> > m->Draw("SAME");
> > }
> > }
> >
> > but i'd like also to be able that if i click on a marker with the mouse
> > button, i could move it at another place. I have no idea how to do that, i
> > checked the functions in Tpad but didn't see what could help...
> > Would you have a such example ?
> > Thank you,
> >
> > Alexis
> >
> >
> >
> >
> >
> >
> > On Thu, 14 Apr 2005, Rene Brun wrote:
> >
> > > When you run the script test.C, the function exectest is known to CINT.
> > > If you type the commands without telling CINT where to find
> > > the function, it is clear that it cannot work.
> > > I suggest adding the following line
> > > gROOT->ProcessLine(".L exectest.C")
> > > before executing:
> > > c1->AddExec("test","exectest()");
> > >
> > > where exectest.C is a file containing only the function exectest
> > >
> > > Rene Brun
> > >
> > > On
> > > Wed, 13 Apr 2005 alexis.cothenet_at_free.fr wrote:
> > >
> > > > Hi all,
> > > >
> > > > I have two questions about the macro that i put in attachment.
> > > >
> > > > 1) If i run it like this, it works well.
> > > > But if i prefer to do in root:
> > > > TFile * f = new TFile("test.root","RECREATE");
> > > > TH1F * hALL = new TH1F("hALL","hALL",100,-3,3);
> > > > hALL->FillRandom("gaus",1000);
> > > > f->Write();
> > > > and then to change test() like this:
> > > > //TH1F * hALL = new TH1F("hALL","hALL",100,-3,3);
> > > > TFile f("test.root","READ") ;
> > > > // hALL->FillRandom("gaus",1000);
> > > > TCanvas * c1 = new TCanvas("c1");
> > > > hALL->Draw();
> > > > c1->Update();
> > > > c1->AddExec("test","exectest()");
> > > >
> > > >
> > > > I cannot see any more the hitogramm hALL...it seems to be masked by
> something
> > > > empty...do you understand my problem ?
> > > >
> > > > 2) once i clicked on the canvas with the mouse and that some markers
> appeared,
> > > > i'd like to be able to move some of them at another place in the canvas
> by the
> > > > way of the mouse.
> > > > Could you explain me how to do that ?
> > > >
> > > > Thank you a lot by advance!
> > > >
> > > > Regards,
> > > > Alexis
> > > >
> > > >
> > >
> > >
> >
>
>

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  Alexis COTHENET
  Docteur en Physique Mathématique, Particules, Modélisation   Spécialités: Développements informatiques,

               Modélisation/simulation, Traitement/analyse de données,
               algorithmes statistiques, mathématiques

  CV disponible sur: http://marwww.in2p3.fr/~cothenet

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Received on Thu Apr 14 2005 - 09:41:25 MEST