Background (JavaFX 8)

java.lang.Object
- javafx.scene.layout.Background

```
public final class Background
extends Object
```
The Background of a Region. A Background is an immutable object which encapsulates the entire set of data required to render the background of a Region. Because this class is immutable, you can freely reuse the same Background on many different Regions. Please refer to JavaFX CSS Reference for a complete description of the CSS rules for styling the background of a Region.
Every Background is comprised of fills and / or images. Neither list will ever be null, but either or both may be empty. Each defined BackgroundFill is rendered in order, followed by each defined BackgroundImage.
The Background's outsets define any extension of the drawing area of a Region which is necessary to account for all background drawing. These outsets are strictly defined by the BackgroundFills that are specified on this Background, if any, because all BackgroundImages are clipped to the drawing area, and do not define it. The outsets values are strictly non-negative.

Since:

JavaFX 8.0

Field Summary

Fields
Modifier and Type Field and Description

static Background EMPTY
An empty Background, useful to use instead of null.

Fields
Modifier and Type	Field and Description
`static Background`	`EMPTY` An empty Background, useful to use instead of null.

Constructor Summary

Constructors
Constructor and Description
`Background(BackgroundFill... fills)` Create a new Background by supplying an array of BackgroundFills.
`Background(BackgroundFill[] fills, BackgroundImage[] images)` Create a new Background by supplying two arrays, one for background fills, and one for background images.
`Background(BackgroundImage... images)` Create a new Background by supplying an array of BackgroundImages.
`Background(List<BackgroundFill> fills, List<BackgroundImage> images)` Create a new Background supply two Lists, one for background fills and one for background images.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`equals(Object o)`
`static List<CssMetaData<? extends Styleable,?>>`	`getClassCssMetaData()`
`List<BackgroundFill>`	`getFills()` The list of BackgroundFills which together define the filled portion of this Background.
`List<BackgroundImage>`	`getImages()` The list of BackgroundImages which together define the image portion of this Background.
`Insets`	`getOutsets()` The outsets of this Background.
`int`	`hashCode()`
`boolean`	`isEmpty()` Gets whether the background is empty.
`boolean`	`isFillPercentageBased()` Gets whether the fill of this Background is based on percentages (that is, relative to the size of the region being styled).

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - EMPTY
```
public static final Background EMPTY
```
    An empty Background, useful to use instead of null.
- Constructor Detail
  - Background
```
public Background(BackgroundFill... fills)
```
    Create a new Background by supplying an array of BackgroundFills. This array may be null, or may contain null values. Any null values will be ignored and will not contribute to the fills or outsets.
    
    Parameters:
    
    fills - The fills. This may be null, and may contain nulls. Any contained nulls are filtered out and not included in the final List of fills. A null array becomes an empty List.
  - Background
```
public Background(BackgroundImage... images)
```
    Create a new Background by supplying an array of BackgroundImages. This array may be null, or may contain null values. Any null values will be ignored and will not contribute to the images.
    
    Parameters:
    
    images - The images. This may be null, and may contain nulls. Any contained nulls are filtered out and not included in the final List of images. A null array becomes an empty List.
  - Background
```
public Background(List<BackgroundFill> fills,
                  List<BackgroundImage> images)
```
    Create a new Background supply two Lists, one for background fills and one for background images. Either list may be null, and may contain nulls. Any null values in these lists will be ignored and will not contribute to the fills, images, or outsets.
    
    Parameters:
    
    fills - The fills. This may be null, and may contain nulls. Any contained nulls are filtered out and not included in the final List of fills. A null List becomes an empty List.
    
    images - The images. This may be null, and may contain nulls. Any contained nulls are filtered out and not included in the final List of images. A null List becomes an empty List.
  - Background
```
public Background(BackgroundFill[] fills,
                  BackgroundImage[] images)
```
    Create a new Background by supplying two arrays, one for background fills, and one for background images. Either array may be null, and may contain null values. Any null values in these arrays will be ignored and will not contribute to the fills, images, or outsets.
    
    Parameters:
    
    fills - The fills. This may be null, and may contain nulls. Any contained nulls are filtered out and not included in the final List of fills. A null array becomes an empty List.
    
    images - The images. This may be null, and may contain nulls. Any contained nulls are filtered out and not included in the final List of images. A null array becomes an empty List.
- Method Detail
  - getClassCssMetaData
```
public static List<CssMetaData<? extends Styleable,?>> getClassCssMetaData()
```
    Returns:
    
    The CssMetaData associated with this class, which may include the CssMetaData of its super classes.
  - getFills
```
public final List<BackgroundFill> getFills()
```
    The list of BackgroundFills which together define the filled portion of this Background. This List is unmodifiable and immutable. It will never be null. The elements of this list will also never be null.
  - getImages
```
public final List<BackgroundImage> getImages()
```
    The list of BackgroundImages which together define the image portion of this Background. This List is unmodifiable and immutable. It will never be null. The elements of this list will also never be null.
  - getOutsets
```
public final Insets getOutsets()
```
    The outsets of this Background. This represents the largest bounding rectangle within which all drawing for the Background will take place. The outsets will never be negative, and represent the distance from the edge of the Region outward. Any BackgroundImages which would extend beyond the outsets will be clipped. Only the BackgroundFills contribute to the outsets.
  - isEmpty
```
public final boolean isEmpty()
```
    Gets whether the background is empty. It is empty if there are no fills or images.
    
    Returns:
    
    true if the Background is empty, false otherwise.
  - isFillPercentageBased
```
public boolean isFillPercentageBased()
```
    Gets whether the fill of this Background is based on percentages (that is, relative to the size of the region being styled). Specifically, this returns true if any of the CornerRadii on any of the fills on this Background has a radius that is based on percentages.
    
    Returns:
    
    True if any CornerRadii of any BackgroundFill on this background would return true, false otherwise.
    
    Since:
    
    JavaFX 8.0
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object

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Class Background

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

EMPTY

Constructor Detail

Background

Background

Background

Background

Method Detail

getClassCssMetaData

getFills

getImages

getOutsets

isEmpty

isFillPercentageBased

equals

hashCode