Re: TouchScreen scrolling?

[captain deadly gmail com]

On Friday 03 December 2010 05:02:14 Tristan Van Berkom wrote:
> This functionality (generally known as 'kinetic scrolling') is not
> available with
> the current GtkScrolledWindow. I have some ideas on how it could be
> implemented and as it's a pretty popular feature, someone might already
> be in the process of developing this.
> 
> You might be able to achieve this by subclassing the GtkScrolledWindow
> and handling the mouse events yourself to drive the scroll adjustment
> positions (however this might turn out to be complex as you would
> want the scrollbars to dissapear and the current scrolled window
> only does scrolling when the scrollbars are visible, so it would involve
> duplicating some of the scrolled window's size request/allocation code
> which is ... tricky).
> 
> Cheers,
>        -Tristan

Thanks a million for that advice Tristan. I'll have a think on it and decide 
how to approach this. It does sound a bit tricky ;-)


> 
> On Thu, Dec 2, 2010 at 8:40 PM,  <captain deadly gmail com> wrote:
> > Hello all,
> >    trying to write an app that runs on a touch screen device without a
> > mouse. I can't find too much info but could well be looking in the wrong
> > place or with the wrong search string.
> > 
> > I've a list of items in a TreeView which I'd like to be able to grab to
> > scroll. At present I'm presenting a popup menu on a double click so that
> > I don't confuse the click to drag with the double click. Is there some
> > way of achieving this grab to scroll functionality in gtk?
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