>
> On Thu, 2004-04-08 at 18:33, Valeri Fine wrote:
> > >
> > >
> > > Hi again,
> > >
> > > Is there any possibility that PNG bitmap output can be supplied in
> > ROOT
> > > in addition to GIF format? This would be very nice, since GIF has
a
> > > certain stigma due to the LZW compression patent (even thought I
> > believe
> > > it's now expired) and since PNG is simply a nicer, more modern
format.
> > > Apologies if it's already supported --- I couldn't find any
mention of
> > > it in the 4.00/03 release notes.
> > >
> >
> > You can do that with
> >
> > http://root.cern.ch/root/htmldoc/TImage.html#TImage:FromPad
> > http://root.cern.ch/root/htmldoc/TImage.html#TImage:EImageFileTypes
>
> Great. Could PNG be added to the "Save canvas as..." file type list,
> then?
One said it doesn't work under Win32gdk yet, it could be an obstacle
for the time being.
>
Anyway it is there with Qt ROOT (it doesn't matter what the platform is,
either is good). See: http://root.bnl.gov/QtRoot/TQtSaveAsDialog.gif )
However Qt version does not use ROOT TImage interface class to implement
the TCanvas "Save As" dialog. It uses the "QPixmap::save" method
directly (no extra and heavy class like TImage is needed to be loaded in
addition via ROOT plug-in)
(see: http://doc.trolltech.com/3.3/qpixmap.html#save )
TImage (TQtImage) implementation uses another Qt class, namely QImage
and its "save" method
see: http://doc.trolltech.com/3.3/qimage.html#save
Qt layer can be added to any existent ROOT version
(see: http://root.bnl.gov/QtRoot/How2Install4Unix.html )
Hope this helps,
Valeri
> Andy
>
> --
> Andy Buckley, HEP Group, Cavendish Lab, Cambridge
> http://www.insectnation.org
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