javafx.scene.layout

Class BackgroundSize

java.lang.Object

javafx.scene.layout.BackgroundSize

public final class BackgroundSize
extends Object

Defines the size of the area that a BackgroundImage should fill relative to the Region it is styling. There are several properties who's values take precedence over the others. In particular there are 4 key properties, width, height, contain, and cover. Both width and height are independent of each other, however both interact with contain and cover.

From the CSS Specification, cover is defined to:

Scale the image, while preserving its intrinsic aspect ratio (if any), to the smallest size such that both its width and its height can completely cover the background positioning area.

contain is defined to:

Scale the image, while preserving its intrinsic aspect ratio (if any), to the largest size such that both its width and its height can fit inside the background positioning area.

And width and height both specify (in absolute values or percentages) the size to use. These two properties only apply if both cover and contain are false. If both cover and contain are true, then cover will be used.

The width and height may also be set to AUTO, indicating that the area should be sized so as to use the image's intrinsic size, or if it cannot be determined, 100%.

Since:

JavaFX 8.0

Field Summary

Fields
Modifier and Type	Field and Description
`static double`	`AUTO` From the CSS Specification: An "auto" value for one dimension is resolved by using the image's intrinsic ratio and the size of the other dimension, or failing that, using the image's intrinsic size, or failing that, treating it as 100%.
`static BackgroundSize`	`DEFAULT` The default BackgroundSize used by BackgroundImages when an explicit size is not defined.

Constructor Summary

Constructors
Constructor and Description
`BackgroundSize(double width, double height, boolean widthAsPercentage, boolean heightAsPercentage, boolean contain, boolean cover)` Create a new BackgroundSize.

Method Summary

All MethodsInstance MethodsConcrete Methods
Modifier and Type	Method and Description
`boolean`	`equals(Object o)`
`double`	`getHeight()` The height of the area within the Region where the associated BackgroundImage should render.
`double`	`getWidth()` The width of the area within the Region where the associated BackgroundImage should render.
`int`	`hashCode()`
`boolean`	`isContain()` If true, scale the image, while preserving its intrinsic aspect ratio (if any), to the largest size such that both its width and its height can fit inside the background positioning area.
`boolean`	`isCover()` If true, scale the image, while preserving its intrinsic aspect ratio (if any), to the smallest size such that both its width and its height can completely cover the background positioning area.
`boolean`	`isHeightAsPercentage()` Specifies whether the value contained in `height` should be interpreted as a percentage or as a normal value.
`boolean`	`isWidthAsPercentage()` Specifies whether the value contained in `width` should be interpreted as a percentage or as a normal value.

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

Field Detail
- AUTO
```
public static final double AUTO
```
  From the CSS Specification:
  An "auto" value for one dimension is resolved by using the image's intrinsic ratio and the size of the other dimension, or failing that, using the image's intrinsic size, or failing that, treating it as 100%.
  If both values are "auto" then the intrinsic width and/or height of the image should be used, if any, the missing dimension (if any) behaving as "auto" as described above. If the image has neither an intrinsic width nor an intrinsic height, its size is determined as for "contain".
  
  When set to AUTO, the values for widthAsPercentage and heightAsPercentage are ignored.
  
  See Also:
  
  Constant Field Values
- DEFAULT
```
public static final BackgroundSize DEFAULT
```
  The default BackgroundSize used by BackgroundImages when an explicit size is not defined. By default, the BackgroundSize is AUTO, AUTO for the width and height, and is neither cover nor contain.

Constructor Detail

BackgroundSize

public BackgroundSize(double width,
                      double height,
                      boolean widthAsPercentage,
                      boolean heightAsPercentage,
                      boolean contain,
                      boolean cover)

Create a new BackgroundSize.

Parameters:

width - The width. Cannot be less than 0, except for the value of AUTO.

Method Detail
- getWidth
```
public final double getWidth()
```
  The width of the area within the Region where the associated BackgroundImage should render. If set to AUTO, then widthAsPercentage is ignored. This value has no meaning if either contain or cover are specified. This value cannot be negative, except when set to the value of AUTO.
- getHeight
```
public final double getHeight()
```
  The height of the area within the Region where the associated BackgroundImage should render. If set to AUTO, then heightAsPercentage is ignored. This value has no meaning if either contain or cover are specified. This value cannot be negative, except when set to the value of AUTO.
- isWidthAsPercentage
```
public final boolean isWidthAsPercentage()
```
  Specifies whether the value contained in width should be interpreted as a percentage or as a normal value.
- isHeightAsPercentage
```
public final boolean isHeightAsPercentage()
```
  Specifies whether the value contained in height should be interpreted as a percentage or as a normal value.
- isContain
```
public final boolean isContain()
```
  If true, scale the image, while preserving its intrinsic aspect ratio (if any), to the largest size such that both its width and its height can fit inside the background positioning area.
- isCover
```
public final boolean isCover()
```
  If true, scale the image, while preserving its intrinsic aspect ratio (if any), to the smallest size such that both its width and its height can completely cover the background positioning area.
- equals
```
public boolean equals(Object o)
```
  Overrides:
  
  equals in class Object
- hashCode
```
public int hashCode()
```
  Overrides:
  
  hashCode in class Object

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Documentation extracted from JavaFX API Documentation.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Java, JavaFX and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

Class BackgroundSize

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

AUTO

DEFAULT

Constructor Detail

BackgroundSize

Method Detail

getWidth

getHeight

isWidthAsPercentage

isHeightAsPercentage

isContain

isCover

equals

hashCode