: Class SequencerAction
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quicktime.app.actions
Class SequencerAction
java.lang.Object
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+--quicktime.app.actions.PeriodicAction
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+--quicktime.app.actions.SequencerAction
All Implemented Interfaces: Ticklish
Direct Known Subclasses: NextImageAction
public abstract class SequencerActionextends PeriodicAction
This class is an abstract class for actions that interact with some kind of Sequencer.
The doAction method is left for the subclass to define so that it can define the type
of a Sequencer the action deals with. The constraining conditions of the Sequencer are dealt with by
this class.
Field Summary
static int
kConstraintAny
static int
kConstraintFirst
static int
kConstraintFirstOrLast
static int
kConstraintLast
protected Sequencer
seq
This is the Sequencer the action uses
Fields inherited from class quicktime.app.actions.PeriodicAction
actor, reschedule
Fields inherited from interface quicktime.app.time.Ticklish
kScale
Constructor Summary
protected
SequencerAction(int scale,
int period,
Sequencer seq)
Create a SequencerAction.
Method Summary
protected boolean
constraintReached()
Subclasses should return true if after an action is triggered (the doAction
method is called) the action has reached one of its specified constraint conditions
and the actionable object should be triggered.
boolean
equals(java.lang.Object obj)
Returns true if the objects are equal or false otherwise.
int
getConstraint()
Gets the constraining condition of the actionable doAction method
void
setConstraint(int cons)
Set the constraining condition that determines the cirumstances of when
the attached actionable object is triggered.
Methods inherited from class quicktime.app.actions.PeriodicAction
doAction, getActionable, getPeriod, getScale, getTriggerCondition, setActionable, setPeriod, setScale, setTriggerCondition, tickle, timeChanged, toString
Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Field Detail
kConstraintAny
public static final int kConstraintAny
kConstraintFirst
public static final int kConstraintFirst
kConstraintLast
public static final int kConstraintLast
kConstraintFirstOrLast
public static final int kConstraintFirstOrLast
seq
protected Sequencer seq
This is the Sequencer the action uses
Constructor Detail
SequencerAction
protected SequencerAction(int scale,
int period,
Sequencer seq)
throws QTException
Create a SequencerAction.
Parameters:scale - the amount with which a second is divided into at a rate of oneperiod - the number of scale ticks that elapse between invocations of the action.seq - the Sequencer.
Method Detail
setConstraint
public void setConstraint(int cons)
Set the constraining condition that determines the cirumstances of when
the attached actionable object is triggered.
Parameters:cons - the constraint
getConstraint
public int getConstraint()
Gets the constraining condition of the actionable doAction method
Returns:the constraint
constraintReached
protected boolean constraintReached()
Subclasses should return true if after an action is triggered (the doAction
method is called) the action has reached one of its specified constraint conditions
and the actionable object should be triggered. How this is defined is determined
totally by the subclass.
Overrides:constraintReached in class PeriodicAction
Returns:true if the actionable object (if set) should be triggered
equals
public boolean equals(java.lang.Object obj)
Returns true if the objects are equal or false otherwise.
Overrides:equals in class PeriodicAction
Parameters:obj - the object to testReturns:a boolean
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