This adds a explicit method for cleaning up the animation. Previously,
animations expected the next_frame to be called where frame=end.
That guarantee was never provided by the api. This resulted in
animations sometimes being in odd states. For example, Browse activity
had an animation that overrode the Gtk "draw" signal. If the signal
was not unbound, the animated object was mistakenly rendered after
the completion of the animation, obstructing the user's view.
This api is explicit and allows cleaner code in the animation
implementation. The clean up code goes in do_stop rather than in a
conditional of next_frame.
Gtk 3.8 introduces the tick callback [1]. This allows widgets to be
signaled before each frame, simmilar to requestAnimationFrame in the
browser.
This patch adds an optional widget argument to the Animator class so
tick based animation can be used. This is much more efficent than
using timeouts, as we get a more appropriate frame rate for the user.
[1] https://developer.gnome.org/gtk3/stable/GtkWidget.html#gtk-widget-add-tick-callback
This is only on a best-effort basis; the code will be in a broken state after
this patch and need to be fixed manually.
The purpose of committing the intermediate, non-working output is to make it
reproducible. It's impractical to manually review the changes.
The exact version used was 4f637212f13b197a95c824967a58496b9e3b877c from the
main pygobject repository [1] plus a custom patch [2] that hasn't been sent
upstream yet.
[1] git://git.gnome.org/pygobject
[2] https://sascha.silbe.org/patches/pygobject-convert-sugar-20111122.patch
Signed-off-by: Sascha Silbe <silbe@activitycentral.com>
The old gtk-2 based module will be present in
the 0.94 branch in the sugar-toolkit.
Signed-off-by: Simon Schampijer <simon@laptop.org>
Acked-by: Sascha Silbe <silbe@activitycentral.com>
Rahul Bothra