[ROOT] Font Color Changes in PDF output

From: Stanley Forrester (sforrest@lifshitz.physics.ucdavis.edu)
Date: Tue Jun 29 2004 - 20:21:30 MEST 

I have a script which draws several histograms on the same TCanvas and 
adds a TLegend.  As displayed the font color in the legend is black.  If 
saved in .ps format the font color is still black.

If I save the image in the .pdf format the font colors in the legend 
match the color of the previous line's marker.  How can I fix this?

I'm using root version 4.00/02, and linux redhat 7.3

script follows
///////////////////////////////////////////////////////////////////

//  script to test .pdf output  04.06.25
//  execution is
//  .L test_pdf.C
//  test_pdf()

int test_pdf() { // begin function

   char htitle[100], hinfo[100];

   sprintf(htitle, "test pdf ");
   sprintf(hinfo, "test TLegend font colors (PDF)");

   TH1F * h1 = new TH1F(htitle, hinfo, 250, 150, 400);
   h1->SetMarkerColor(2);
   h1->SetMarkerStyle(20);

   TH1F * h2 = new TH1F(htitle, hinfo, 250, 150, 400);
   h2->SetMarkerColor(3);
   h2->SetMarkerStyle(21);

   TH1F * h3 = new TH1F(htitle, hinfo, 250, 150, 400);
   h3->SetMarkerColor(4);
   h3->SetMarkerStyle(22);

   TH1F * h4= new TH1F(htitle, hinfo, 250, 150, 400);
   h4->SetMarkerColor(5);
   h4->SetMarkerStyle(23);

   for (Int_t i=1; i != 25; ++i) { // begin loop on i
     float iEvent = 10.0 * i + 150.0;
     h1->Fill(iEvent, iEvent*iEvent);
     h2->Fill(iEvent, iEvent*iEvent/2.0);
     h3->Fill(iEvent, iEvent*10.0);
     h4->Fill(iEvent, iEvent*100.0);
   } // end loop on i

   TCanvas* c1 = new TCanvas("c1","",200,10,700,780);
   c1->SetFillColor(10);
   c1->SetGrid();
   c1->Draw();

   h1->Draw("P");
   h2->Draw("psame");
   h3->Draw("psame");
   h4->Draw("psame");

   TLegend *leg = new TLegend(0.7,0.7,0.89,0.89);

   leg->AddEntry( h1,"histo h1","P");
   leg->AddEntry( h2,"histo h2","P");
   leg->AddEntry( h3,"histo h3","P");
   leg->AddEntry( h4,"histo h4","P");
   leg->Draw();

   c1->SaveAs("PDF_output.pdf");
   c1->SaveAs("Postscript_output.ps");

   return 0;
} // end function

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