This signal is emitted as the first step of toolkit and
application processing of the frame. Animations should
be updated using Frame.clockGetFrameTime.
Applications can connect directly to this signal, or
use Widget.addTickCallback as a more convenient
interface.
This signal is emitted as the first step of toolkit and application processing of the frame. Animations should be updated using Frame.clockGetFrameTime. Applications can connect directly to this signal, or use Widget.addTickCallback as a more convenient interface.