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CompoundBorder (Java 2 Platform SE 5.0) - JDK 5 Documentation v1.5.0, Java 2 SDK 英文文档

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javax.swing.border
Class CompoundBorder

java.lang.Object
  javax.swing.border.AbstractBorder
      javax.swing.border.CompoundBorder

All Implemented Interfaces:

Serializable, Border

Direct Known Subclasses:

BorderUIResource.CompoundBorderUIResource

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public class CompoundBorder
extends AbstractBorder

A composite Border class used to compose two Border objects into a single border by nesting an inside Border object within the insets of an outside Border object. For example, this class may be used to add blank margin space to a component with an existing decorative border:

    Border border = comp.getBorder();
    Border margin = new EmptyBorder(10,10,10,10);
    comp.setBorder(new CompoundBorder(border, margin));
 

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^TM has been added to the java.beans package. Please see XMLEncoder.

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Field Summary
protected  Border	insideBorder
protected  Border	outsideBorder

 

Constructor Summary
CompoundBorder()           Creates a compound border with null outside and inside borders.
CompoundBorder(Border outsideBorder, Border insideBorder)           Creates a compound border with the specified outside and inside borders.

 

Method Summary
Insets	getBorderInsets(Component c)           Returns the insets of the composite border by adding the insets of the outside border to the insets of the inside border.
Insets	getBorderInsets(Component c, Insets insets)           Reinitialize the insets parameter with this Border's current Insets.
Border	getInsideBorder()           Returns the inside border object.
Border	getOutsideBorder()           Returns the outside border object.
boolean	isBorderOpaque()           Returns whether or not this compound border is opaque.
void	paintBorder(Component c, Graphics g, int x, int y, int width, int height)           Paints the compound border by painting the outside border with the specified position and size and then painting the inside border at the specified position and size offset by the insets of the outside border.

 

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

outsideBorder

protected Border outsideBorder

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insideBorder

protected Border insideBorder

Constructor Detail

CompoundBorder

public CompoundBorder()

Creates a compound border with null outside and inside borders.

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CompoundBorder

public CompoundBorder(Border outsideBorder,
                      Border insideBorder)

Creates a compound border with the specified outside and inside borders. Either border may be null.

Parameters:

outsideBorder - the outside border

insideBorder - the inside border to be nested

Method Detail

isBorderOpaque

public boolean isBorderOpaque()

Returns whether or not this compound border is opaque. Returns true if both the inside and outside borders are non-null and opaque; returns false otherwise.

Specified by:

isBorderOpaque in interface Border

Overrides:

isBorderOpaque in class AbstractBorder

Returns:

false

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paintBorder

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

Paints the compound border by painting the outside border with the specified position and size and then painting the inside border at the specified position and size offset by the insets of the outside border.

Specified by:

paintBorder in interface Border

Overrides:

paintBorder in class AbstractBorder

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,
                              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

Returns:

the insets object

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getBorderInsets

public Insets getBorderInsets(Component c)

Returns the insets of the composite border by adding the insets of the outside border to the insets of the inside border.

Specified by:

getBorderInsets in interface Border

Overrides:

getBorderInsets in class AbstractBorder

Parameters:

c - the component for which this border insets value applies

Returns:

the new Insets object initialized to 0

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getOutsideBorder

public Border getOutsideBorder()

Returns the outside border object.

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getInsideBorder

public Border getInsideBorder()

Returns the inside border object.

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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