java.lang.Object
javax.swing.border.AbstractBorder
javax.swing.border.EmptyBorder
- All Implemented Interfaces:
Serializable
,Border
- Direct Known Subclasses:
BorderUIResource.EmptyBorderUIResource
,MatteBorder
A class which provides an empty, transparent border which
takes up space but does no drawing.
Warning:
Serialized objects of this class will not be compatible with
future Swing releases. The current serialization support is
appropriate for short term storage or RMI between applications running
the same version of Swing. As of 1.4, support for long term storage
of all JavaBeans
has been added to the java.beans
package.
Please see XMLEncoder
.
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Field Summary
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Constructor Summary
ConstructorDescriptionEmptyBorder
(int top, int left, int bottom, int right) Creates an empty border with the specified insets.EmptyBorder
(Insets borderInsets) Creates an empty border with the specified insets. -
Method Summary
Modifier and TypeMethodDescriptionReturns the insets of the border.getBorderInsets
(Component c, Insets insets) Reinitialize the insets parameter with this Border's current Insets.boolean
Returns whether or not the border is opaque.void
paintBorder
(Component c, Graphics g, int x, int y, int width, int height) Does no drawing by default.Methods declared in class javax.swing.border.AbstractBorder
getBaseline, getBaselineResizeBehavior, getBorderInsets, getInteriorRectangle, getInteriorRectangle
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Field Details
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left
protected int leftThe left inset of the border. -
right
protected int rightThe right inset of the border. -
top
protected int topThe top inset of the border. -
bottom
protected int bottomThe bottom inset of the border.
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Constructor Details
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EmptyBorder
public EmptyBorder(int top, int left, int bottom, int right) Creates an empty border with the specified insets.- Parameters:
top
- the top inset of the borderleft
- the left inset of the borderbottom
- the bottom inset of the borderright
- the right inset of the border
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EmptyBorder
Creates an empty border with the specified insets.- Parameters:
borderInsets
- the insets of the border- Throws:
NullPointerException
- if the specifiedborderInsets
isnull
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Method Details
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paintBorder
Does no drawing by default.- Specified by:
paintBorder
in interfaceBorder
- Overrides:
paintBorder
in classAbstractBorder
- Parameters:
c
- the component for which this border is being paintedg
- the paint graphicsx
- the x position of the painted bordery
- the y position of the painted borderwidth
- the width of the painted borderheight
- the height of the painted border
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getBorderInsets
Reinitialize the insets parameter with this Border's current Insets.- Overrides:
getBorderInsets
in classAbstractBorder
- Parameters:
c
- the component for which this border insets value appliesinsets
- the object to be reinitialized- Returns:
- the
insets
object - Throws:
NullPointerException
- if the specifiedinsets
isnull
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getBorderInsets
Returns the insets of the border.- Returns:
- an
Insets
object containing the insets from top, left, bottom and right - Since:
- 1.3
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isBorderOpaque
public boolean isBorderOpaque()Returns whether or not the border is opaque. Returns false by default.- Specified by:
isBorderOpaque
in interfaceBorder
- Overrides:
isBorderOpaque
in classAbstractBorder
- Returns:
- false
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