Hi once again... :-)
On 11/7/07, Johan Mårtenson <[EMAIL PROTECTED]> wrote:
>
> Hi again,
>
> On 11/7/07, Emmanuele Bassi <[EMAIL PROTECTED]> wrote:
> >
> > hi;
> >
> > On Wed, 2007-11-07 at 21:19 +0100, Johan Mårtenson wrote:
> >
> > > def key_event(stage, event):
> > > timeline = clutter.Timeline(100, 26)
> > > alpha = clutter.Alpha(timeline, clutter.sine_func )
> > >
> > > path_forward = clutter.BehaviourPath(alpha, ((0, 0), (100, 100)))
> > >
> > > # Up
> > > if event.keyval == 65362:
> > > menu = stage.get_nth_child(0)
> > > path_forward.apply(menu)
> > >
> > > timeline.start ()
> >
> > the timeline, alpha and path_forward objects go out of scope when
> > control reaches the end of the key_event signal handler; hence, you see
> > no behaviour running because python will simply garbage collect those
> > objects.
>
>
> I forgot about that, thanks.
>
> you should either declare path_forward as a global variable or, going
> > down the object oriented path, as an instance member of your application
> > class.
>
>
> And indeed you're right. Just making the variables global fixes it.
>
Actually, I still don't get the behavior I'm expecting. In the attached
program, I want the HBox menu to slide to the middle and stay there but once
it gets there it instead slides back again. What am I getting wrong?
Also, is there a nicer way of comparing keys than using b.keyval == 65362
for arrow up and 113 for q?
ciao,
> > Emmanuele.
>
>
> Thanks,
>
> Johan
>
Thanks,
Johan
--
> > Emmanuele Bassi, OpenedHand Ltd.
> > Unit R, Homesdale Business Centre
> > 216-218 Homesdale Rd., Bromley - BR12QZ
> > http://www.o-hand.com
> >
> > --
> > To unsubscribe send a mail to [EMAIL PROTECTED]
> >
> >
>
#! /usr/bin/python
import clutter
def key_event(stage, b):
global timeline
global alpha
global path_forward
timeline = clutter.Timeline(100, 26)
alpha = clutter.Alpha(timeline, clutter.ramp_func)
path_forward = clutter.BehaviourPath(alpha, ((0, 0), (100, 100)))
# Up
if b.keyval == 65362:
menu = stage.get_nth_child(0)
path_forward.apply(menu)
timeline.start()
# q
if b.keyval == 113:
clutter.main_quit()
return True
def build_scene():
label = clutter.Label()
label.set_text('Some label')
label.show()
menu = clutter.HBox()
menu.add(label)
menu.set_position(0, 0)
menu.show()
stage = clutter.stage_get_default()
stage.set_size(300, 300)
stage.set_color(clutter.color_parse("#7F7F7F"))
stage.add(menu)
stage.show()
return stage
def main():
stage = build_scene()
stage.connect("key-press-event", key_event)
clutter.main()
if __name__ == '__main__':
main()
