oracle.cabo.image.painter
Class NullPainter

java.lang.Object
  |
  +--oracle.cabo.image.painter.AbstractPainter
        |
        +--oracle.cabo.image.painter.NullPainter

All Implemented Interfaces:

BorderPainter, Painter

public class NullPainter

extends AbstractPainter

implements BorderPainter

A completely transparent painter object that has no size. This is useful as a default value and as a transparent painter.

Constructor Summary

NullPainter()
Creates a new Nullpainter instance.

Method Summary

ImmInsets	getFillInsets(PaintContext context) Returns the amount of space by which fills should be inset.
ImmInsets	getInsets(PaintContext context) Returns the amount of space the border will require on each side.
java.awt.Dimension	getMinimumSize(PaintContext context) Returns the minimum size of the NullPainter.
static BorderPainter	getPainter() Returns the shared instance of the NullPainter class.
void	paint(PaintContext context, java.awt.Graphics g, int x, int y, int width, int height) Paints the NullPainter at the given location.

Methods inherited from class oracle.cabo.image.painter.AbstractPainter

getData, getDataKey, getPreferredSize

Methods inherited from class java.lang.Object

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

Methods inherited from interface oracle.cabo.image.painter.Painter

getPreferredSize

Constructor Detail

NullPainter

public NullPainter()

Creates a new Nullpainter instance. NullPainter is not a singleton, although there is a shared instance which most programmers will use. Being able to create new instances allows programmers to differentiate Nullpainter instances.

See Also:

getPainter()

Method Detail

getPainter

public static BorderPainter getPainter()

Returns the shared instance of the NullPainter class. This is the instance that most users should use.

Returns:

The shared instance of the NullPainter class.

getMinimumSize

public java.awt.Dimension getMinimumSize(PaintContext context)

Returns the minimum size of the NullPainter.

Specified by:

getMinimumSize in interface Painter

Parameters:

context - Context for determining the minimum size.

Returns:

The minimum size of the Painter.

paint

public void paint(PaintContext context,
                  java.awt.Graphics g,
                  int x,
                  int y,
                  int width,
                  int height)

Paints the NullPainter at the given location.

Specified by:

paint in interface Painter

Parameters:

context - Context for painting.

g - Graphics object to draw into.

x - X position to draw at.

y - Y position to draw at.

width - Width to draw into.

height - Height to draw into.

getInsets

public ImmInsets getInsets(PaintContext context)

Returns the amount of space the border will require on each side.

Specified by:

getInsets in interface BorderPainter

Parameters:

context - the context for painting

getFillInsets

public ImmInsets getFillInsets(PaintContext context)

Returns the amount of space by which fills should be inset.

Specified by:

getFillInsets in interface BorderPainter

Parameters:

context - the context for painting