Re: kinetic scrolling in gtk

[Lieven van der Heide <lievenvanderheide gmail com>]

Hi Sathishreddy, 

I was already afraid that this was what you were trying to do with. Basically, what you'd want is to have nested scrolled windows, an outer one which only scrolls horizontally, and inside that, multiple scrolled windows (probably in a hbox), which only scroll vertically, and then swiping horizontally should scroll the outer one, while swiping vertically the inner one. Unfortunately, this is currently not supported in gtk, and instead only the inner most scrolled window will listen to your touch actions. 

I really do think this is something that should eventually be supported by gtk, and so it's probably a good idea to create a ticket in bugzilla, but that probably won't end up in the main version until some time. It may be possible to temporarily hack something, for example, by intercepting touch events, and forwarding them to both the inner and outer scrolled windows.

Regards,

Lieven.

On Fri, May 16, 2014 at 1:40 AM, Sathishreddy Cheemarla <sathish15889 gmail com> wrote:

Thanks Lieven,

I will try and get back to you.

Actually my requirement is like mobile phones menu.There on first page grid we have icons for menus ,if we scroll horizontally there are some other icons for menus.

eg: for your idea i am attaching the images.if we are in first screen where grid is filled with icon if we scroll the screen horizontally we will 

get the another grid with different icons.

please help me in doing this.

On Fri, May 16, 2014 at 12:33 AM, Lieven van der Heide <lievenvanderheide gmail com> wrote:

The reason why you don't have horizontal kinetic scrolling is simply because horizontally, your content fits inside the visible area of the scrolled window. Kinetic scrolling in a direction is only enabled when the corresponding scroll bar is visible. Simply changing the text in "Non scrollable widget using viewport" to "" already makes the left most scrolled window smaller, and then you do get both horizontal and vertical kinetic scrolling. 

On Thu, May 15, 2014 at 2:02 PM, Sathishreddy Cheemarla <sathish15889 gmail com> wrote:

Thanks Lieven,

Its working now.But it is scrolling up/down .Is it possible for left/right also?

If yes,please suggest the changes .

we have tested attached file.

On Thu, May 15, 2014 at 5:21 PM, Lieven van der Heide <lievenvanderheide gmail com> wrote:

Well, all scrolled windows in gtk3-demo should have it (try the tree view on the left for example). Can you try to run the gtk3-demo, and see if it works for you?

On Thu, May 15, 2014 at 12:42 PM, Sathishreddy Cheemarla <sathish15889 gmail com> wrote:

Thanks lieven for reply.

We are using touch only for input system.do we need multi touch for this.

Please share if any sample codes if you have.

Regards
Sathish Reddy

On May 15, 2014 4:56 PM, "Lieven van der Heide" <lievenvanderheide gmail com> wrote:
>
> Hi Sathishreddy, 
>
> Kinetic scrolling should be on by default, but is only used with touch input, so my guess is that may be the reason why you're not seeing it. It's currently not possible to use it with mouse or keyboard input unfortunately.
>
> Regards,
>
> Lieven.
>
>
>
> On Thu, May 15, 2014 at 12:14 PM, Sathishreddy Cheemarla <sathish15889 gmail com> wrote:
>>
>> Hi All,
>>
>> I am using GTK for my UI development.
>>
>> I want to incorporate kinetic scrolling in my UI design.
>>
>> I found that in GTK+3.4 this feature is incorporated.
>>
>> I am unable to use this feature.Can you please share the sample code to use this
>>
>> feature.
>>
>> --
>> thanks & regards
>> c sathish reddy
>> 9966740149
>>
>>
>> _______________________________________________
>> gtk-devel-list mailing list
>> gtk-devel-list gnome org
>> https://mail.gnome.org/mailman/listinfo/gtk-devel-list
>>
>

--
thanks & regards

c sathish reddy

9966740149

--
thanks & regards

c sathish reddy

9966740149