Re: Graph Widget Development

[Jean Bréfort <jean brefort normalesup org>]

You might also have a look at the goffice library (which provide the
charting engine to gnumeric, abiword, gnucash and others).

Le mercredi 06 mai 2009 à 16:18 -0400, Keith Williams a écrit :
> You might want to take a look at the GIW library (it's hosted on 
> sourceforge).   I'm not sure if it will save you any coding or not.
> 
> Also, a guy I was working with wrote a patch for GIW's x-y plot that 
> utilized Cairo's anti-aliased drawing capability.  I can probably dig 
> that up if you're interested.
> 
> HTH,
> 
> Keith
> 
> David Brigada wrote:
> > Hello,
> >
> > I am currently developing an X-Y graph widget that I think could 
> > someday be included in GTK+.  I'd just like to get a little bit of 
> > feedback on the design so that I don't start spinning my wheels in the 
> > wrong direction.  My plan is to make the usage of GtkGraph similar to 
> > that of GtkTreeView---they are both widgets that can show large 
> > amounts of data.
> >
> > The widget would be GtkGraph (analogous to GtkTreeView).  This would 
> > show axes, labels and numbers on the axes, and provide the drawing 
> > region to show the plots on.  On the GtkGraph widget, application 
> > programmers could add GtkGraphPlot objects (similar to 
> > GtkTreeViewColumn), each of which would plot a single series of data. 
> > The plot objects would be connected to two things, first a 
> > GtkGraphRenderer (similar to GtkCellRenderer) that would determine how 
> > to plot the data on the graph, and second a GtkTreeModel (usually a 
> > GtkListStore or possibly a lightweight replacement that uses an array 
> > instead of a linked list for backing) that provides the data that the 
> > renderer uses to generate its plots.  Each GtkGraphPlot object would 
> > also hold one or more column numbers indexing into the tree model.
> >
> > At some point, when I'm done with a basic implementation of this, I'll 
> > send an update with (a link to) the code to the list, if anyone's 
> > interested in giving a brief review so that I can try to fit it better 
> > to GTK+'s style.
> >
> > Please let me know what you think about this idea.
> >
> > Thanks,
> > David Brigada
> > _______________________________________________
> > gtk-devel-list mailing list
> > gtk-devel-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gtk-devel-list
> >
> >
> >
> 
> 
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