[Sugar-devel] How to make a GTK3 EventBox accept the focus?

[Gonzalo Odiard]

Can you catch the key-press-event in the activity class?
I think other activities like Read or Terminal do this.

Gonzalo

On Wed, Feb 27, 2013 at 1:53 PM, James Simmons <nicestep at gmail.com> wrote:

> Aneesh,
>
> I'm trying to incorporate your GTK3 update to View Slides and release the
> result on ASLO.  The problem I'm still having is that I cannot page through
> the images using the keyboard as I used to.  What I did in the past was to
> nest the image control in an event box and make the event box able to
> accept the focus.  Then the user clicks on the image with the mouse to set
> the focus and at that point the event box receives key press events.
>
> When you upgraded View Slides to use GTK3 you removed the code to make the
> event box focusable.  I have tried to replace the missing line of code with
> what seems to be the GTK3 equivalent but it isn't working.  I've done a lot
> of google searches trying to figure out the problem and I'm not getting
> anywhere.  I cannot release View Slides as it is.  It really needs to be
> able to navigate through the images with the keyboard to be usable.
>
> I'm hoping you might have some thoughts or maybe an idea of how to do the
> keyboard paging a different way.
>
> James Simmons
>
>
> On Mon, Feb 25, 2013 at 6:20 AM, Manuel Quiñones <manuq at laptop.org> wrote:
>
>> Hi James,
>>
>> 2013/2/24 James Simmons <nicestep at gmail.com>:
>> > I was looking at the upgrade to GTK3 done for View Slides and it seems
>> that
>> > it no longer responds to the keyboard.  What I had done previously to
>> get it
>> > to do that was to put the image I was displaying in an event box.  I
>> then
>> > made the event box accept the focus like this:
>> >
>> > self.eventbox.set_events(gtk.gdk.KEY_PRESS_MASK |
>> gtk.gdk.BUTTON_PRESS_MASK)
>> > self.eventbox.set_flags(gtk.CAN_FOCUS)
>> >
>> > The Gtk3 port changed the code to this:
>> >
>> > self.eventbox.set_events(Gdk.EventMask.KEY_PRESS_MASK |
>> > Gdk.EventMask.BUTTON_PRESS_MASK)
>> >
>> > There was no code to make it accept the focus.  I tried adding this:
>> >
>> > self.eventbox.set_can_focus(True)
>> >
>> > This does not prevent the Activity from running, but it doesn't make the
>> > Event Box focusable either.
>>
>> Have you tried self.eventbox.grab_focus() ?
>>
>>
>> http://developer.gnome.org/gtk3/stable/GtkWidget.html#gtk-widget-grab-focus
>>
>> --
>> .. manuq ..
>>
>
>
> _______________________________________________
> Sugar-devel mailing list
> Sugar-devel at lists.sugarlabs.org
> http://lists.sugarlabs.org/listinfo/sugar-devel
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sugarlabs.org/archive/sugar-devel/attachments/20130227/9b07bbd8/attachment.html>