Re: A Few ideas for improvement

Rene Brun (Rene.Brun@cern.ch)
Thu, 29 May 1997 18:04:57 +0200


Damir Buskulic wrote:
>
> I had the following ideas concerning a few improvements for the graphics
> and user interface :
>
> - have a "Transparency mode" for pads to allow seing what is underneath

We use pixmaps to speedup operations on pads. Pads may have a fill style
set to zero, but this is currently ignored by the pixmaps manager.
May require some work to implement it.

> - have the possibility of a grid so that elements could be placed more
> precisely and aligned (would be useful for presentations)
> - have not only a list of classes but also a list of objects belonging to
> a specified class

We agree that is an urgent request. The grid (with 2 different sizes)
could be enabled/disabled via the "Options" menu.

> - a way to send graphical objects to the back the same way we can now move
> them to the front. It would enable to see the objects that are hidden by
> some huge one ( a pad for example)

This is again connected with a change in the pixmaps manager.

> - have some sort of "worksheet" object. The goal is not to build another
> Excel but to have a way to simply draw a table of numbers or elements of
> a matrix or whatever should be aligned as a matrix.
>

You already have an alphanumeric print of a table via TTree::Scan.
We could implement a graphical version of Scan.

Rene Brun