javafx.animation.ParallelTransition Maven / Gradle / Ivy
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* published by the Free Software Foundation. Oracle designates this
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* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
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package javafx.animation;
import com.sun.javafx.animation.TickCalculation;
import static com.sun.javafx.animation.TickCalculation.*;
import javafx.beans.InvalidationListener;
import javafx.beans.Observable;
import javafx.beans.property.ObjectProperty;
import javafx.collections.ListChangeListener.Change;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Node;
import javafx.util.Duration;
import com.sun.javafx.collections.TrackableObservableList;
import com.sun.javafx.collections.VetoableListDecorator;
import com.sun.scenario.animation.AbstractMasterTimer;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
/**
* This {@link Transition} plays a list of {@link javafx.animation.Animation
* Animations} in parallel.
*
* Children of this {@code Transition} inherit {@link #nodeProperty() node}, if their
* {@code node} property is not specified.
*
*
* Code Segment Example:
*
*
*
*
* Rectangle rect = new Rectangle (100, 40, 100, 100);
* rect.setArcHeight(50);
* rect.setArcWidth(50);
* rect.setFill(Color.VIOLET);
*
* final Duration SEC_2 = Duration.millis(2000);
* final Duration SEC_3 = Duration.millis(3000);
*
* FadeTransition ft = new FadeTransition(SEC_3);
* ft.setFromValue(1.0f);
* ft.setToValue(0.3f);
* ft.setCycleCount(2f);
* ft.setAutoReverse(true);
* TranslateTransition tt = new TranslateTransition(SEC_2);
* tt.setFromX(-100f);
* tt.setToX(100f);
* tt.setCycleCount(2f);
* tt.setAutoReverse(true);
* RotateTransition rt = new RotateTransition(SEC_3);
* rt.setByAngle(180f);
* rt.setCycleCount(4f);
* rt.setAutoReverse(true);
* ScaleTransition st = new ScaleTransition(SEC_2);
* st.setByX(1.5f);
* st.setByY(1.5f);
* st.setCycleCount(2f);
* st.setAutoReverse(true);
*
* ParallelTransition pt = new ParallelTransition(rect, ft, tt, rt, st);
* pt.play();
*
*
*
* @see Transition
* @see Animation
*
* @since JavaFX 2.0
*/
public final class ParallelTransition extends Transition {
private static final Animation[] EMPTY_ANIMATION_ARRAY = new Animation[0];
private static final double EPSILON = 1e-12;
private Animation[] cachedChildren = EMPTY_ANIMATION_ARRAY;
private long[] durations;
private long[] delays;
private double[] rates;
private long[] offsetTicks;
private boolean[] forceChildSync;
private long oldTicks;
private long cycleTime;
private boolean childrenChanged = true;
private boolean toggledRate;
private final InvalidationListener childrenListener = observable -> {
childrenChanged = true;
if (getStatus() == Status.STOPPED) {
setCycleDuration(computeCycleDuration());
}
};
private final ChangeListener rateListener = new ChangeListener() {
@Override
public void changed(ObservableValue observable, Number oldValue, Number newValue) {
if (oldValue.doubleValue() * newValue.doubleValue() < 0) {
for (int i = 0; i < cachedChildren.length; ++i) {
Animation child = cachedChildren[i];
child.clipEnvelope.setRate(rates[i] * Math.signum(getCurrentRate()));
}
toggledRate = true;
}
}
};
/**
* This {@link javafx.scene.Node} is used in all child {@link Transition
* Transitions}, that do not define a target {@code Node} themselves. This
* can be used if a number of {@code Transitions} should be applied to a
* single {@code Node}.
*
* It is not possible to change the target {@code node} of a running
* {@code Transition}. If the value of {@code node} is changed for a running
* {@code Transition}, the animation has to be stopped and started again to
* pick up the new value.
*/
private ObjectProperty node;
private static final Node DEFAULT_NODE = null;
public final void setNode(Node value) {
if ((node != null) || (value != null /* DEFAULT_NODE */)) {
nodeProperty().set(value);
}
}
public final Node getNode() {
return (node == null)? DEFAULT_NODE : node.get();
}
public final ObjectProperty nodeProperty() {
if (node == null) {
node = new javafx.beans.property.SimpleObjectProperty(this, "node", DEFAULT_NODE);
}
return node;
}
private final Set childrenSet = new HashSet();
private final ObservableList children = new VetoableListDecorator(new TrackableObservableList() {
@Override
protected void onChanged(Change c) {
while (c.next()) {
for (final Animation animation : c.getRemoved()) {
animation.parent = null;
animation.rateProperty().removeListener(childrenListener);
animation.totalDurationProperty().removeListener(childrenListener);
animation.delayProperty().removeListener(childrenListener);
}
for (final Animation animation : c.getAddedSubList()) {
animation.parent = ParallelTransition.this;
animation.rateProperty().addListener(childrenListener);
animation.totalDurationProperty().addListener(childrenListener);
animation.delayProperty().addListener(childrenListener);
}
}
childrenListener.invalidated(children);
}
}) {
@Override
protected void onProposedChange(List toBeAdded, int... indexes) {
IllegalArgumentException exception = null;
for (int i = 0; i < indexes.length; i+=2) {
for (int idx = indexes[i]; idx < indexes[i+1]; ++idx) {
childrenSet.remove(children.get(idx));
}
}
for (Animation child : toBeAdded) {
if (child == null) {
exception = new IllegalArgumentException("Child cannot be null");
break;
}
if (!childrenSet.add(child)) {
exception = new IllegalArgumentException("Attempting to add a duplicate to the list of children");
break;
}
if (checkCycle(child, ParallelTransition.this)) {
exception = new IllegalArgumentException("This change would create cycle");
break;
}
}
if (exception != null) {
childrenSet.clear();
childrenSet.addAll(children);
throw exception;
}
}
};
private static boolean checkCycle(Animation child, Animation parent) {
Animation a = parent;
while (a != child) {
if (a.parent != null) {
a = a.parent;
} else {
return false;
}
}
return true;
}
/**
* A list of {@link javafx.animation.Animation Animations} that will be
* played sequentially.
*
* It is not possible to change the children of a running
* {@code ParallelTransition}. If the children are changed for a running
* {@code ParallelTransition}, the animation has to be stopped and started
* again to pick up the new value.
*
* @return the list of {@link javafx.animation.Animation Animations}
*/
public final ObservableList getChildren() {
return children;
}
/**
* The constructor of {@code ParallelTransition}.
*
* @param node
* The target {@link javafx.scene.Node} to be used in child
* {@link Transition Transitions} that have no {@code Node} specified
* themselves
* @param children
* The child {@link javafx.animation.Animation Animations} of
* this {@code ParallelTransition}
*/
public ParallelTransition(Node node, Animation... children) {
setInterpolator(Interpolator.LINEAR);
setNode(node);
getChildren().setAll(children);
}
/**
* The constructor of {@code ParallelTransition}.
*
* @param children
* The child {@link javafx.animation.Animation Animations} of
* this {@code ParallelTransition}
*/
public ParallelTransition(Animation... children) {
this(null, children);
}
/**
* The constructor of {@code ParallelTransition}.
*
* @param node
* The target {@link javafx.scene.Node} to be used in child
* {@link Transition Transitions} that have no {@code Node} specified
* themselves
*/
public ParallelTransition(Node node) {
setInterpolator(Interpolator.LINEAR);
setNode(node);
}
/**
* The constructor of {@code ParallelTransition}.
*/
public ParallelTransition() {
this((Node) null);
}
// For testing purposes
ParallelTransition(AbstractMasterTimer timer) {
super(timer);
setInterpolator(Interpolator.LINEAR);
}
/**
* {@inheritDoc}
*/
@Override
protected Node getParentTargetNode() {
final Node node = getNode();
return (node != null) ? node : (parent != null && parent instanceof Transition) ?
((Transition)parent).getParentTargetNode() : null;
}
private Duration computeCycleDuration() {
Duration maxTime = Duration.ZERO;
for (final Animation animation : getChildren()) {
final double absRate = Math.abs(animation.getRate());
final Duration totalDuration = (absRate < EPSILON) ?
animation.getTotalDuration() : animation.getTotalDuration().divide(absRate);
final Duration childDuration = totalDuration.add(animation.getDelay());
if (childDuration.isIndefinite()) {
return Duration.INDEFINITE;
} else {
if (childDuration.greaterThan(maxTime)) {
maxTime = childDuration;
}
}
}
return maxTime;
}
private double calculateFraction(long currentTicks, long cycleTicks) {
final double frac = (double) currentTicks / cycleTicks;
return (frac <= 0.0) ? 0 : (frac >= 1.0) ? 1.0 : frac;
}
private boolean startChild(Animation child, int index) {
final boolean forceSync = forceChildSync[index];
if (child.startable(forceSync)) {
child.clipEnvelope.setRate(rates[index] * Math.signum(getCurrentRate()));
child.doStart(forceSync);
forceChildSync[index] = false;
return true;
}
return false;
}
@Override
void sync(boolean forceSync) {
super.sync(forceSync);
if ((forceSync && childrenChanged) || (durations == null)) {
cachedChildren = getChildren().toArray(EMPTY_ANIMATION_ARRAY);
final int n = cachedChildren.length;
durations = new long[n];
delays = new long[n];
rates = new double[n];
offsetTicks = new long[n];
forceChildSync = new boolean[n];
cycleTime = 0;
int i = 0;
for (final Animation animation : cachedChildren) {
rates[i] = Math.abs(animation.getRate());
if (rates[i] < EPSILON) {
rates[i] = 1;
}
durations[i] = fromDuration(animation.getTotalDuration(), rates[i]);
delays[i] = fromDuration(animation.getDelay());
cycleTime = Math.max(cycleTime, add(durations[i], delays[i]));
forceChildSync[i] = true;
i++;
}
childrenChanged = false;
} else if (forceSync) {
final int n = forceChildSync.length;
for (int i=0; i 0) {
doJumpTo(currentTicks, cycleTime, false);
}
}
}
@Override
void doStop() {
super.doStop();
for (final Animation animation : cachedChildren) {
if (animation.getStatus() != Status.STOPPED) {
animation.doStop();
}
}
if (childrenChanged) {
setCycleDuration(computeCycleDuration());
}
rateProperty().removeListener(rateListener);
}
@Override
void doPlayTo(long currentTicks, long cycleTicks) {
setCurrentTicks(currentTicks);
final double frac = calculateFraction(currentTicks, cycleTicks);
final long newTicks = Math.max(0, Math.min(getCachedInterpolator().interpolate(0, cycleTicks, frac), cycleTicks));
if (toggledRate) {
for (int i = 0; i < cachedChildren.length; ++i) {
if (cachedChildren[i].getStatus() == Status.RUNNING) {
offsetTicks[i] -= Math.signum(getCurrentRate()) * (durations[i] - 2 * (oldTicks - delays[i]));
}
}
toggledRate = false;
}
if (getCurrentRate() > 0) {
int i = 0;
for (final Animation animation : cachedChildren) {
if ((newTicks >= delays[i]) && ((oldTicks <= delays[i]) ||
((newTicks < add(delays[i], durations[i])) && (animation.getStatus() == Status.STOPPED)))) {
final boolean enteringCycle = oldTicks <= delays[i];
if (startChild(animation, i)) {
animation.clipEnvelope.jumpTo(0);
} else {
if (enteringCycle) {
final EventHandler handler = animation.getOnFinished();
if (handler != null) {
handler.handle(new ActionEvent(this, null));
}
}
continue;
}
}
if (newTicks >= add(durations[i], delays[i])) {
if (animation.getStatus() == Status.RUNNING) {
animation.doTimePulse(sub(durations[i], offsetTicks[i]));
offsetTicks[i] = 0;
}
} else if (newTicks > delays[i]) {
animation.doTimePulse(sub(newTicks - delays[i], offsetTicks[i]));
}
i++;
}
} else {
int i = 0;
for (final Animation animation : cachedChildren) {
if (newTicks < add(durations[i], delays[i])) {
if ((oldTicks >= add(durations[i], delays[i])) || ((newTicks >= delays[i]) && (animation.getStatus() == Status.STOPPED))){
final boolean enteringCycle = oldTicks >= add(durations[i], delays[i]);
if (startChild(animation, i)) {
animation.clipEnvelope.jumpTo(Math.round(durations[i] * rates[i]));
} else {
if (enteringCycle) {
final EventHandler handler = animation.getOnFinished();
if (handler != null) {
handler.handle(new ActionEvent(this, null));
}
}
continue;
}
}
if (newTicks <= delays[i]) {
if (animation.getStatus() == Status.RUNNING) {
animation.doTimePulse(sub(durations[i], offsetTicks[i]));
offsetTicks[i] = 0;
}
} else {
animation.doTimePulse(sub( add(durations[i], delays[i]) - newTicks, offsetTicks[i]));
}
}
i++;
}
}
oldTicks = newTicks;
}
@Override
void doJumpTo(long currentTicks, long cycleTicks, boolean forceJump) {
setCurrentTicks(currentTicks);
if (getStatus() == Status.STOPPED && !forceJump) {
return;
}
sync(false);
final double frac = calculateFraction(currentTicks, cycleTicks);
final long newTicks = Math.max(0, Math.min(getCachedInterpolator().interpolate(0, cycleTicks, frac), cycleTicks));
int i = 0;
for (final Animation animation : cachedChildren) {
final Status status = animation.getStatus();
if (newTicks <= delays[i]) {
offsetTicks[i] = 0;
if (status != Status.STOPPED) {
animation.clipEnvelope.jumpTo(0);
animation.doStop();
} else if(TickCalculation.fromDuration(animation.getCurrentTime()) != 0) {
animation.doJumpTo(0, durations[i], true);
}
} else if (newTicks >= add(durations[i], delays[i])) {
offsetTicks[i] = 0;
if (status != Status.STOPPED) {
animation.clipEnvelope.jumpTo(Math.round(durations[i] * rates[i]));
animation.doStop();
} else if (TickCalculation.fromDuration(animation.getCurrentTime()) != durations[i]) {
animation.doJumpTo(durations[i], durations[i], true);
}
} else {
if (status == Status.STOPPED) {
startChild(animation, i);
if (getStatus() == Status.PAUSED) {
animation.doPause();
}
offsetTicks[i] = (getCurrentRate() > 0)? newTicks - delays[i] : add(durations[i], delays[i]) - newTicks;
} else if (status == Status.PAUSED) {
offsetTicks[i] += (newTicks - oldTicks) * Math.signum(this.clipEnvelope.getCurrentRate());
} else {
offsetTicks[i] += (getCurrentRate() > 0) ? newTicks - oldTicks : oldTicks - newTicks;
}
animation.clipEnvelope.jumpTo(Math.round(sub(newTicks, delays[i]) * rates[i]));
}
i++;
}
oldTicks = newTicks;
}
/**
* {@inheritDoc}
*/
@Override
protected void interpolate(double frac) {
// no-op
}
private void jumpToEnd() {
for (int i = 0 ; i < cachedChildren.length; ++i) {
if (forceChildSync[i]) {
// See explanation in SequentialTransition#jumpToEnd
cachedChildren[i].sync(true);
}
cachedChildren[i].doJumpTo(durations[i], durations[i], true);
}
}
private void jumpToStart() {
for (int i = cachedChildren.length - 1 ; i >= 0; --i) {
if (forceChildSync[i]) {
cachedChildren[i].sync(true);
}
cachedChildren[i].doJumpTo(0, durations[i], true);
}
}
}