- java.lang.Object
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- javafx.scene.layout.Border
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public final class Border extends Object
The Border of aRegion
. A Border is an immutable object which encapsulates the entire set of data required to render the border of a Region. Because this class is immutable, you can freely reuse the same Border on many different Regions. Please refer to JavaFX CSS Reference Guide for a complete description of the CSS rules for styling the border of a Region.Every Border is comprised of
strokes
and / orimages
. Neither list will ever be null, but either or both may be empty. When rendering, if no images are specified or no image succeeds in loading, then all strokes will be rendered in order. If any image is specified and succeeds in loading, then no strokes will be drawn, although they will still contribute to theinsets
andoutsets
of the Border.The Border's
outsets
define any extension of the drawing area of a Region which is necessary to account for all border drawing and positioning. These outsets are defined by both theBorderStroke
s andBorderImage
s specified on this Border. Outsets are strictly non-negative.getInsets()
are used to define the inner-most edge of all of the borders. It also is always strictly non-negative. The Region uses the insets of theBackground
and Border and theRegion's padding
to determine the Regioninsets
, which define the content area for any children of the Region. The outsets of a Border together with the outsets of a Background and the width and height of the Region define the geometric bounds of the Region (which in turn contribute to thelayoutBounds
,boundsInLocal
, andboundsInParent
).A Border is most often used in cases where you want to skin the Region with an image, often used in conjunction with 9-patch scaling techniques. In such cases, you may also specify a stroked border which is only used when the image fails to load for some reason.
- Since:
- JavaFX 8.0
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Constructor Summary
Constructors Constructor Description Border(List<BorderStroke> strokes, List<BorderImage> images)
Creates a new Border by supplying a List of BorderStrokes and BorderImages.Border(BorderImage... images)
Creates a new Border by supplying an array of BorderImages.Border(BorderStroke... strokes)
Creates a new Border by supplying an array of BorderStrokes.Border(BorderStroke[] strokes, BorderImage[] images)
Creates a new Border by supplying an array of BorderStrokes and BorderImages.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static List<CssMetaData<? extends Styleable,?>>
getClassCssMetaData()
List<BorderImage>
getImages()
The list of BorderImages which together define the images to use instead of stroke for this Border.Insets
getInsets()
The insets define the distance from the edge of the Region to the inner-most edge of the border, if that distance is non-negative.Insets
getOutsets()
The outsets of the border define the outer-most edge of the border to be drawn.List<BorderStroke>
getStrokes()
The list of BorderStrokes which together define the stroked portion of this Border.boolean
isEmpty()
Gets whether the Border is empty.
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Field Detail
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EMPTY
public static final Border EMPTY
An empty Border, useful to use instead of null.
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Constructor Detail
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Border
public Border(BorderStroke... strokes)
Creates a new Border by supplying an array of BorderStrokes. This array may be null, or may contain null values. Any null values will be ignored and will not contribute to thestrokes
oroutsets
orinsets
.- Parameters:
strokes
- The strokes. This may be null, and may contain nulls. Any contained nulls are filtered out and not included in the final List of strokes. A null array becomes an empty List. If both strokes and images are specified, and if any one of the images specified succeeds in loading, then no strokes are shown. In this way, strokes can be defined as a fallback in the case that an image failed to load.
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Border
public Border(BorderImage... images)
Creates a new Border by supplying an array of BorderImages. This array may be null, or may contain null values. Any null values will be ignored and will not contribute to theimages
oroutsets
orinsets
.- 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.
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Border
public Border(List<BorderStroke> strokes, List<BorderImage> images)
Creates a new Border by supplying a List of BorderStrokes and BorderImages. These Lists may be null, or may contain null values. Any null values will be ignored and will not contribute to thestrokes
orimages
,outsets
, orinsets
.- Parameters:
strokes
- The strokes. This may be null, and may contain nulls. Any contained nulls are filtered out and not included in the final List of strokes. A null array becomes an empty List. If both strokes and images are specified, and if any one of the images specified succeeds in loading, then no strokes are shown. In this way, strokes can be defined as a fallback in the case that an image failed to load.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.
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Border
public Border(BorderStroke[] strokes, BorderImage[] images)
Creates a new Border by supplying an array of BorderStrokes and BorderImages. These arrays may be null, or may contain null values. Any null values will be ignored and will not contribute to thestrokes
orimages
,outsets
, orinsets
.- Parameters:
strokes
- The strokes. This may be null, and may contain nulls. Any contained nulls are filtered out and not included in the final List of strokes. A null array becomes an empty List. If both strokes and images are specified, and if any one of the images specified succeeds in loading, then no strokes are shown. In this way, strokes can be defined as a fallback in the case that an image failed to load.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.
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Method Detail
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getClassCssMetaData
public static List<CssMetaData<? extends Styleable,?>> getClassCssMetaData()
- Returns:
- The CssMetaData associated with this class, which may include the CssMetaData of its superclasses.
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getStrokes
public final List<BorderStroke> getStrokes()
The list of BorderStrokes which together define the stroked portion of this Border. This List is unmodifiable and immutable. It will never be null. It will never contain any null elements.- Returns:
- the list of BorderStrokes which together define the stroked portion of this Border
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getImages
public final List<BorderImage> getImages()
The list of BorderImages which together define the images to use instead of stroke for this Border. If this list is specified and at least one image within it succeeds in loading, then any specifiedstrokes
are not drawn. If this list is null or no images succeeded in loading, then any specifiedstrokes
are drawn.This List is unmodifiable and immutable. It will never be null. It will never contain any null elements.
- Returns:
- the list of BorderImages which together define the images to use instead of stroke for this Border
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getOutsets
public final Insets getOutsets()
The outsets of the border define the outer-most edge of the border to be drawn. The values in these outsets are strictly non-negative.- Returns:
- the outsets of the border define the outer-most edge of the border to be drawn
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getInsets
public final Insets getInsets()
The insets define the distance from the edge of the Region to the inner-most edge of the border, if that distance is non-negative. The values in these outsets are strictly non-negative.- Returns:
- the insets define the distance from the edge of the Region to the inner-most edge of the border
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isEmpty
public final boolean isEmpty()
Gets whether the Border is empty. It is empty if there are no strokes or images.- Returns:
- true if the Border is empty, false otherwise.
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