Graphical Output

TASImage / libAfterImage

• In TImageDump the way the markers 6 and 7 are drawn (medium dot and big dot) has been changed to make sure they have the same size as the one on screen.
• Changes in libAfterImage (draw.c & draw.h), TASImage.cxx and TImageDump.cxx in order to produce nice looking circular (hollow and solid) markers. Previously the line used to draw hollow circular markers looked very thick and the solid ones did not look circular.
• Remove the global variable named "dpy" in libAfterImage. It produced an error if a user program used that simple variable name. "dpy" was a pointer to a "Display".

PostScript and PDF

• Now, a text with size 0 is not drawn in PDF files. An invalid PDF file is created if a text with size 0 is produced.
• The landscape orientation is now correct in pdf files. gv recognizes the files as "Landscape" and the orientation is not upside down as it was before (seascape).
• In PostScript and PDF files the method DrawPS is used to write a single (x,y) position. This case was not treated correctly and, because of that, the PS and PDF files might contain useless attributes settings. That was only a few bytes more in the file but they were useless.

TLegend

• When a object is added "by name" in a legend, the TMultiGraph and THStack present in the current pad are scanned if an object with this name has not been found in the pad. Previously the graphs and histograms were hidden in multi-graphs and histogram-stacks when one tried to add them by name.
• New reference guide.

TGaxis

• In PaintAxis The option "U", for unlabeled axis, was not implemented in case of alphanumeric axis' labels.
• On log-scale TGAxis, with labels having lower values than 1 and ticks marks set to the positive side, alignement issues seem to come up. The following example shows four TGAxis drawn respectively with the following options: RG-, RG+, LG-, LG+. For the RG+ and LG+ options, the 10E-1 and 10E-2 labels were ill-aligned, showing a shift to the right compared to the 1E2, 1E1 and 1 labels.

    {
       c1 = new TCanvas("c1","Examples of Log TGaxis",10,10,700,500);
       c1->Range(-10,-1,10,1);
       TGaxis *axis1 = new TGaxis(-7,-0.8,-7,0.8,0.01,100,50510,"RG-");
       axis1->SetTitle("RG-"); axis1->Draw();
       TGaxis *axis2 = new TGaxis(-2,-0.8,-2,0.8,0.01,100,50510,"RG+");
       axis2->SetLabelOffset(-0.04); axis2->SetTitleOffset(-1.5);
       axis2->SetTitle("RG+"); axis2->Draw();
       TGaxis *axis3 = new TGaxis(2,-0.8,2,0.8,0.01,100,50510,"LG-");
       axis3->SetLabelOffset(-0.04);
       axis3->SetTitle("LG-"); axis3->Draw();
       TGaxis *axis4 = new TGaxis(7,-0.8,7,0.8,0.01,100,50510,"LG+");
       axis4->SetTitleOffset(-1);
       axis4->SetTitle("LG+"); axis4->Draw();
    }
    

• gStyle.SetStripDecimals(kFALSE) did not work in cases like the following one:

    {
       gStyle.SetStripDecimals(kFALSE);
       gStyle.SetPadLeftMargin(.15);
       TGraph graph_freq;
       graph_freq.SetPoint(0, 933., 40078879.);
       graph_freq.SetPoint(1, 934., 40078966.);
       graph_freq.Draw("A*");
    }
    

TCrown

• The crown picking did not work.
• Improve help.

TLatex

• The text angle was not taken into account in case the text was painted in low precision like in:

    gStyle->SetTitleFont(60,"xy");
    TH1F* h=new TH1F("foo", "bar;#int;#int", 10, 0, 1);
    h->Draw();
    

  In that example the Y title was not rotated.

TCanvas

• A canvas is turned into GL mode only if the canvas name starts with "gl". Before the "gl" string could be anywhere in the name.

QtRoot/ libGQt

• The redundant Qt3-related code was removed.
• The Q3_SUPPORT flag was eliminated. The plug-in can be used with and without Q3_SUPPORT now.
• The code was adjusted to work under the Qt 4.5.x.
• Many platform depended (win32) sections were replaced with the cross-platform code