[maemo-developers] Aw: Re: Fremantle user interface behaviour and API

[From: Cornelius Hald]

On Thu, 2009-05-14 at 15:12 +0200, API wrote:
> From: Cornelius Hald <hald at icandy.de>
> 
> > > > Tree View
> > > > I changes the code from using gtk_tree_view_new() to
> > > > hildon_gtk_tree_view_new(). I thought this would give me a finger friendly
> > > > version of the tree view, but I cannot see a difference between the hildon and
> > > > the gtk version. Also the different HildonUIModes have no effect for me. What
> > > > is the supposed outcome? How do I get the tree view to be finger friendly? I'm
> > > > using a GtkListStore as backend and the view shows two sortable columns - if
> > > > that matters.
> 
> If you want to see the differences between the HildonUIModes, you can try to
> take a look to the hildon-pannable-area-touch-list-example, included on the
> examples directories. AFAIK, the example package is not included with the
> beta, but you can download the hildon-widgets source code and compile it
> by yourself. This example compare the two hildon modes and the "old
> behaviour".

Thanks, I didn't know that there were examples... I downloaded and
compiled them. Now it's time for playing :)

> > > To avoid breaking legacy applications, the proper theming is done only
> > > to treeviews inside a pannable area. If you put your treeview inside a pannable
> > > area, you'll get finger-friendly sized rows.
> > 
> > Ok, I changed that too and the result is looking good.
> > Still I have two more questions:
> > 1. Which signal gets emitted when one of the rows is selected?
> 
> This is still a normal treeview, you use hildon_gtk_tree_view_new only to ensure
> to get the proper theming. So when one of the rows are selected the GtkTreeSelection
> of this treeview emits the signal "changed" [1].

I checked my code again and yes, the signals are emitted. The problem
was, that I was using gtk_tree_view_get_selection() inside a
"row-activated" handler which does not work with the hildonized tree
view. I changed my code to use the provided GtkTreePath and now it's
working fine.

> In the same way, recently a new signal was added to the maemo-flavoured gtk, so
> if a row is tapped on the treeview, the treeview emits the signal "hildon-row-tapped",
> this could be useful to you too although I'm not sure if it was included on this beta,
> take a look to the gtk code to confirm that.

I tried and it is included in the beta SDK. In which way should that be
different from "row-activated"? For me it looks like both are doing the
same. So I'll stick to "row-activated" for now.

> I hope this helps

It helped a lot. Thank you very much!