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List:       kde-devel
Subject:    Re: graph widget (explained)
From:       Heiko Nardmann <h.nardmann () secunet ! de>
Date:       2001-11-23 7:02:20
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On Friday 16 November 2001 20:48, Matthias Ettrich wrote:
> On Sunday 16 December 2001 10:52, Stephan Stapel wrote:
> > > Would the widget used in KChart help you ?
> >
> > Sorry, I think you misunderstood. I mean, I didn't describe my problem in
> > a proper way... :-))=
> > What I would like to do is displaying a tree, i.e. nodes which are
> > connected by vertices. Each node may have a distinct number of inputs and
> > outputs. In SgGraph, you can e.g. set bitmaps for each of these in
> > different states (connected, unconnected etc.). It's somehow similar to
> > what is being done for Kivio, Kuml etc. but I guess these folks are not
> > designing the respective components for common use but rather for proper
> > and elegant use within the desired contexts (applications). Am I wrong?!
> >
> > Is there a project like this?!
>
> Not that I'm aware of, but with QCanvas that's actually quite easy now.
>
> The demo example of Qt  (qt/examples/demp) contains the beginning of a
> graph class (graph.cpp, graph.h), even with a simple animated layout
> algorithm. Run the demo and select the 2D graphics page.

Maybe some support for graphwiz maybe makes some sense ... e.g. a C++/Qt 
Wrapper for the graphwiz structures and its layout algorithms.

Or does such a thing already exist?

I don't know whether there are other graph manipulation apis.

- -- 
Heiko Nardmann (Dipl.-Ing.), h.nardmann@secunet.de, Software Development
secunet Security Networks AG - Sicherheit in Netzwerken (www.secunet.de),
Weidenauer Str. 223-225, D-57076 Siegen
Tel. : +49 271 48950-13, Fax  : +49 271 48950-50
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