Bert Freudenberg wrote:
Hi folks,
is there a notification of activation / deactivation for an activity?
Or do I have to watch X11 events when matchbox shuffles windows back
and forth?
Activity is a GtkWindow so you can listen of focus-in/focus-out. See the
attached patch for an example. This way you will get
activated/deactivated also when switching to the home page or the zoom
view temporarily though. And I'm not sure if that's what we actually
want. I need to talk with Eben about it.
I noticed etoys is happily animating and playing sounds even if it is
not the top activity, which is most likely not desired.
Is there a general policy of background activity? I guess the chat,
for example, would continue to receive messages even when not at top.
An animation should be stopped if nobody sees it. But what about a
longer-running simulation? Or some time-lapse data measuring from the
analogue input?
We should probably have a policy for this in our (planned) activity
guidelines. Can you open a ticket about this and assign it to me please?
Thanks,
Marco
diff --git a/activities/groupchat/GroupChatActivity.py b/activities/groupchat/GroupChatActivity.py
index 32cfac5..0cb3e66 100644
--- a/activities/groupchat/GroupChatActivity.py
+++ b/activities/groupchat/GroupChatActivity.py
@@ -1,3 +1,5 @@
+import sys
+
from gettext import gettext as _
from sugar.activity.Activity import Activity
@@ -6,3 +8,12 @@ class GroupChatActivity(Activity):
def __init__(self):
Activity.__init__(self)
self.set_title(_('Group chat'))
+
+ self.connect('focus-in-event', self._focus_in_cb)
+ self.connect('focus-out-event', self._focus_out_cb)
+
+ def _focus_in_cb(self, window, event):
+ print >> sys.stderr, 'Activated'
+
+ def _focus_out_cb(self, window, event):
+ print >> sys.stderr, 'Deactivated'
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