Module javafx.graphics
Package javafx.animation

## Class FadeTransition

- java.lang.Object
- - javafx.animation.Animation
  - - javafx.animation.Transition
    - - javafx.animation.FadeTransition

-     public final class FadeTransition
      extends Transition

  This `Transition` creates a fade effect animation that spans its `duration`. This is done by updating the `opacity` variable of the `node` at regular interval.

  It starts from the `fromValue` if provided else uses the `node`'s `opacity` value.

  It stops at the `toValue` value if provided else it will use start value plus `byValue`.

  The `toValue` takes precedence if both `toValue` and `byValue` are specified.

  Code Segment Example:

       import javafx.scene.shape.*;
       import javafx.animation.*;

       ...

           Rectangle rect = new Rectangle (100, 40, 100, 100);
           rect.setArcHeight(50);
           rect.setArcWidth(50);
           rect.setFill(Color.VIOLET);

           FadeTransition ft = new FadeTransition(Duration.millis(3000), rect);
           ft.setFromValue(1.0);
           ft.setToValue(0.3);
           ft.setCycleCount(4);
           ft.setAutoReverse(true);

           ft.play();

       ...

  Since:
    JavaFX 2.0
  See Also:
    `Transition`, `Animation`

- - ### Property Summary

    Properties
    Type | Property | Description
    --- | --- | ---
    `DoubleProperty` | `byValue` | Specifies the incremented stop opacity value, from the start, of this `FadeTransition`.
    `ObjectProperty<Duration>` | `duration` | The duration of this `FadeTransition`.
    `DoubleProperty` | `fromValue` | Specifies the start opacity value for this `FadeTransition`.
    `ObjectProperty<Node>` | `node` | The target node of this `Transition`.
    `DoubleProperty` | `toValue` | Specifies the stop opacity value for this `FadeTransition`.

    - ### Properties inherited from class javafx.animation.Transition

      `interpolator`

    - ### Properties inherited from class javafx.animation.Animation

      `autoReverse, currentRate, currentTime, cycleCount, cycleDuration, delay, onFinished, rate, status, totalDuration`

  - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class javafx.animation.Animation

      `Animation.Status`

  - ### Field Summary

    - ### Fields inherited from class javafx.animation.Animation

      `INDEFINITE`

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `FadeTransition()` | The constructor of `FadeTransition`
    `FadeTransition​(Duration duration)` | The constructor of `FadeTransition`
    `FadeTransition​(Duration duration, Node node)` | The constructor of `FadeTransition`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `DoubleProperty` | `byValueProperty()` | Specifies the incremented stop opacity value, from the start, of this `FadeTransition`.
    `ObjectProperty<Duration>` | `durationProperty()` | The duration of this `FadeTransition`.
    `DoubleProperty` | `fromValueProperty()` | Specifies the start opacity value for this `FadeTransition`.
    `double` | `getByValue()` | Gets the value of the property byValue.
    `Duration` | `getDuration()` | Gets the value of the property duration.
    `double` | `getFromValue()` | Gets the value of the property fromValue.
    `Node` | `getNode()` | Gets the value of the property node.
    `double` | `getToValue()` | Gets the value of the property toValue.
    `protected void` | `interpolate​(double frac)` | The method `interpolate()` has to be provided by implementations of `Transition`.
    `ObjectProperty<Node>` | `nodeProperty()` | The target node of this `Transition`.
    `void` | `setByValue​(double value)` | Sets the value of the property byValue.
    `void` | `setDuration​(Duration value)` | Sets the value of the property duration.
    `void` | `setFromValue​(double value)` | Sets the value of the property fromValue.
    `void` | `setNode​(Node value)` | Sets the value of the property node.
    `void` | `setToValue​(double value)` | Sets the value of the property toValue.
    `DoubleProperty` | `toValueProperty()` | Specifies the stop opacity value for this `FadeTransition`.

    - ### Methods inherited from class javafx.animation.Transition

      `getCachedInterpolator, getInterpolator, getParentTargetNode, interpolatorProperty, setInterpolator`

    - ### Methods inherited from class javafx.animation.Animation

      `autoReverseProperty, currentRateProperty, currentTimeProperty, cycleCountProperty, cycleDurationProperty, delayProperty, getCuePoints, getCurrentRate, getCurrentTime, getCycleCount, getCycleDuration, getDelay, getOnFinished, getRate, getStatus, getTargetFramerate, getTotalDuration, isAutoReverse, jumpTo, jumpTo, onFinishedProperty, pause, play, playFrom, playFrom, playFromStart, rateProperty, setAutoReverse, setCycleCount, setCycleDuration, setDelay, setOnFinished, setRate, setStatus, statusProperty, stop, totalDurationProperty`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Property Detail

    - #### node

          public final ObjectProperty<Node> nodeProperty

      The target node of this `Transition`.

      It is not possible to change the target `node` of a running `FadeTransition`. If the value of `node` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      See Also:
        `getNode()`, `setNode(Node)`

    - #### duration

          public final ObjectProperty<Duration> durationProperty

      The duration of this `FadeTransition`.

      It is not possible to change the `duration` of a running `FadeTransition`. If the value of `duration` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      Note: While the unit of `duration` is a millisecond, the granularity depends on the underlying operating system and will in general be larger. For example animations on desktop systems usually run with a maximum of 60fps which gives a granularity of ~17 ms. Setting duration to value lower than `Duration.ZERO` will result in `IllegalArgumentException`.

      Default value:
        400ms
      See Also:
        `getDuration()`, `setDuration(Duration)`

    - #### fromValue

          public final DoubleProperty fromValueProperty

      Specifies the start opacity value for this `FadeTransition`.

      It is not possible to change `fromValue` of a running `FadeTransition`. If the value of `fromValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      Default value:
        `Double.NaN`
      See Also:
        `getFromValue()`, `setFromValue(double)`

    - #### toValue

          public final DoubleProperty toValueProperty

      Specifies the stop opacity value for this `FadeTransition`.

      It is not possible to change `toValue` of a running `FadeTransition`. If the value of `toValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      Default value:
        `Double.NaN`
      See Also:
        `getToValue()`, `setToValue(double)`

    - #### byValue

          public final DoubleProperty byValueProperty

      Specifies the incremented stop opacity value, from the start, of this `FadeTransition`.

      It is not possible to change `byValue` of a running `FadeTransition`. If the value of `byValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      See Also:
        `getByValue()`, `setByValue(double)`

  - ### Constructor Detail

    - #### FadeTransition

          public FadeTransition​(Duration duration,
                                Node node)

      The constructor of `FadeTransition`
      Parameters:
        `duration` - The duration of the `FadeTransition`
        `node` - The `node` which opacity will be animated

    - #### FadeTransition

          public FadeTransition​(Duration duration)

      The constructor of `FadeTransition`
      Parameters:
        `duration` - The duration of the `FadeTransition`

    - #### FadeTransition

          public FadeTransition()

      The constructor of `FadeTransition`

  - ### Method Detail

    - #### setNode

          public final void setNode​(Node value)

      Sets the value of the property node.
      Property description:
        The target node of this `Transition`.

        It is not possible to change the target `node` of a running `FadeTransition`. If the value of `node` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    - #### getNode

          public final Node getNode()

      Gets the value of the property node.
      Property description:
        The target node of this `Transition`.

        It is not possible to change the target `node` of a running `FadeTransition`. If the value of `node` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    - #### nodeProperty

          public final ObjectProperty<Node> nodeProperty()

      The target node of this `Transition`.

      It is not possible to change the target `node` of a running `FadeTransition`. If the value of `node` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      See Also:
        `getNode()`, `setNode(Node)`

    - #### setDuration

          public final void setDuration​(Duration value)

      Sets the value of the property duration.
      Property description:
        The duration of this `FadeTransition`.

        It is not possible to change the `duration` of a running `FadeTransition`. If the value of `duration` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

        Note: While the unit of `duration` is a millisecond, the granularity depends on the underlying operating system and will in general be larger. For example animations on desktop systems usually run with a maximum of 60fps which gives a granularity of ~17 ms. Setting duration to value lower than `Duration.ZERO` will result in `IllegalArgumentException`.

      Default value:
        400ms

    - #### getDuration

          public final Duration getDuration()

      Gets the value of the property duration.
      Property description:
        The duration of this `FadeTransition`.

        It is not possible to change the `duration` of a running `FadeTransition`. If the value of `duration` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

        Note: While the unit of `duration` is a millisecond, the granularity depends on the underlying operating system and will in general be larger. For example animations on desktop systems usually run with a maximum of 60fps which gives a granularity of ~17 ms. Setting duration to value lower than `Duration.ZERO` will result in `IllegalArgumentException`.

      Default value:
        400ms

    - #### durationProperty

          public final ObjectProperty<Duration> durationProperty()

      The duration of this `FadeTransition`.

      It is not possible to change the `duration` of a running `FadeTransition`. If the value of `duration` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      Note: While the unit of `duration` is a millisecond, the granularity depends on the underlying operating system and will in general be larger. For example animations on desktop systems usually run with a maximum of 60fps which gives a granularity of ~17 ms. Setting duration to value lower than `Duration.ZERO` will result in `IllegalArgumentException`.

      Default value:
        400ms
      See Also:
        `getDuration()`, `setDuration(Duration)`

    - #### setFromValue

          public final void setFromValue​(double value)

      Sets the value of the property fromValue.
      Property description:
        Specifies the start opacity value for this `FadeTransition`.

        It is not possible to change `fromValue` of a running `FadeTransition`. If the value of `fromValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      Default value:
        `Double.NaN`

    - #### getFromValue

          public final double getFromValue()

      Gets the value of the property fromValue.
      Property description:
        Specifies the start opacity value for this `FadeTransition`.

        It is not possible to change `fromValue` of a running `FadeTransition`. If the value of `fromValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      Default value:
        `Double.NaN`

    - #### fromValueProperty

          public final DoubleProperty fromValueProperty()

      Specifies the start opacity value for this `FadeTransition`.

      It is not possible to change `fromValue` of a running `FadeTransition`. If the value of `fromValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      Default value:
        `Double.NaN`
      See Also:
        `getFromValue()`, `setFromValue(double)`

    - #### setToValue

          public final void setToValue​(double value)

      Sets the value of the property toValue.
      Property description:
        Specifies the stop opacity value for this `FadeTransition`.

        It is not possible to change `toValue` of a running `FadeTransition`. If the value of `toValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      Default value:
        `Double.NaN`

    - #### getToValue

          public final double getToValue()

      Gets the value of the property toValue.
      Property description:
        Specifies the stop opacity value for this `FadeTransition`.

        It is not possible to change `toValue` of a running `FadeTransition`. If the value of `toValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      Default value:
        `Double.NaN`

    - #### toValueProperty

          public final DoubleProperty toValueProperty()

      Specifies the stop opacity value for this `FadeTransition`.

      It is not possible to change `toValue` of a running `FadeTransition`. If the value of `toValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      Default value:
        `Double.NaN`
      See Also:
        `getToValue()`, `setToValue(double)`

    - #### setByValue

          public final void setByValue​(double value)

      Sets the value of the property byValue.
      Property description:
        Specifies the incremented stop opacity value, from the start, of this `FadeTransition`.

        It is not possible to change `byValue` of a running `FadeTransition`. If the value of `byValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    - #### getByValue

          public final double getByValue()

      Gets the value of the property byValue.
      Property description:
        Specifies the incremented stop opacity value, from the start, of this `FadeTransition`.

        It is not possible to change `byValue` of a running `FadeTransition`. If the value of `byValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    - #### byValueProperty

          public final DoubleProperty byValueProperty()

      Specifies the incremented stop opacity value, from the start, of this `FadeTransition`.

      It is not possible to change `byValue` of a running `FadeTransition`. If the value of `byValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      See Also:
        `getByValue()`, `setByValue(double)`

    - #### interpolate

          protected void interpolate​(double frac)

      The method `interpolate()` has to be provided by implementations of `Transition`. While a `Transition` is running, this method is called in every frame. The parameter defines the current position with the animation. At the start, the fraction will be `0.0` and at the end it will be `1.0`. How the parameter increases, depends on the `interpolator`, e.g. if the `interpolator` is `Interpolator.LINEAR`, the fraction will increase linear. This method must not be called by the user directly.
      Specified by:
        `interpolate` in class `Transition`
      Parameters:
        `frac` - The relative position