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Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class EmptyBorder - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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javax.swing.border
Class EmptyBorder

java.lang.Object
  |
  +--javax.swing.border.AbstractBorder
        |
        +--javax.swing.border.EmptyBorder

Direct Known Subclasses:

BorderUIResource.EmptyBorderUIResource, MatteBorder

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public class EmptyBorder

extends AbstractBorder

implements Serializable

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. A future release of Swing will provide support for long term persistence.

See Also:

Serialized Form

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Field Summary
protected  int	bottom
protected  int	left
protected  int	right
protected  int	top

 

Constructor Summary

EmptyBorder(Insets insets)           Creates an empty border with the specified insets.

EmptyBorder(int top, int left, int bottom, int right)           Creates an empty border with the specified insets.

 

Method Summary
Insets	getBorderInsets(Component c)           Returns the insets of the border.
Insets	getBorderInsets(Component c, Insets insets)           Reinitialize the insets parameter with this Border's current Insets.
boolean	isBorderOpaque()           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 inherited from class javax.swing.border.AbstractBorder

getInteriorRectangle, getInteriorRectangle

 

Methods inherited from class java.lang.Object

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

 

Field Detail

left

protected int left

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right

protected int right

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top

protected int top

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bottom

protected int bottom

Constructor Detail

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 border

left - the left inset of the border

bottom - the bottom inset of the border

right - the right inset of the border

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EmptyBorder

public EmptyBorder(Insets insets)

Creates an empty border with the specified insets.

Parameters:

insets - the insets of the border

Method Detail

paintBorder

public void paintBorder(Component c,
                        Graphics g,
                        int x,
                        int y,
                        int width,
                        int height)

Does no drawing by default.

Overrides:

paintBorder in class AbstractBorder

Tags copied from interface: Border

Parameters:

c - the component for which this border is being painted

g - the paint graphics

x - the x position of the painted border

y - the y position of the painted border

width - the width of the painted border

height - the height of the painted border

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getBorderInsets

public Insets getBorderInsets(Component c)

Returns the insets of the border.

Overrides:

getBorderInsets in class AbstractBorder

Parameters:

c - the component for which this border insets value applies

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getBorderInsets

public Insets getBorderInsets(Component c,
                              Insets insets)

Reinitialize the insets parameter with this Border's current Insets.

Overrides:

getBorderInsets in class AbstractBorder

Parameters:

c - the component for which this border insets value applies

insets - the object to be reinitialized

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isBorderOpaque

public boolean isBorderOpaque()

Returns whether or not the border is opaque. Returns false by default.

Overrides:

isBorderOpaque in class AbstractBorder

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