Appendix F DoodlePad Timer Events
DoodlePad implements a Timer class, that may be used to drive repeating events, like animations. You may create any number of Timer objects, set the tick-rate in ticks-per-second, start and stop TImer objects, and handle a Timer-related events by extending the class and overriding methods.
| Method | Description |
|---|---|
| public void onStart(long when) 1 | A method that can be overridden to handle the Timer’s start event. The timer is started by invoking the startTimer() method. The when parameter is the difference in milliseconds between the timestamp of when this event occurred and midnight, January 1, 1970 UTC. |
| public void onStop(long when) 2 | A method that can be overridden to handle the Timer’s stop event. The timer is started by invoking the stopTimer() method. The when parameter is the difference in milliseconds between the timestamp of when this event occurred and midnight, January 1, 1970 UTC. |
| public void onTick(long when) 3 | A method that can be overridden to handle the Timer’s tick event. The timer tick rate is set with the setTickRate() method. The timer is started by invoking the startTimer() method. The timer is stopped by invoking the stopTimer() method. The when parameter is the difference in milliseconds between the timestamp of when this event occurred and midnight, January 1, 1970 UTC. |
doodlepad.org/dist/javadoc/doodlepad/Timer.html#onStart(long)doodlepad.org/dist/javadoc/doodlepad/Timer.html#onStop(long)doodlepad.org/dist/javadoc/doodlepad/Timer.html#onTick(long)
