horstmann.ch10_proxy

Class ImageProxy

java.lang.Object

horstmann.ch10_proxy.ImageProxy

All Implemented Interfaces:

javax.swing.Icon

public class ImageProxy
extends java.lang.Object
implements javax.swing.Icon

A proxy for delayed loading of image icons.

Field Summary

Fields

Modifier and Type	Field and Description
private javax.swing.ImageIcon	image
private java.lang.String	name

Constructor Summary

Constructors

Constructor and Description
ImageProxy(java.lang.String name) Constructs a proxy for delayed loading of an image file.

Method Summary

Modifier and Type	Method and Description
private void	ensureImageLoaded() Loads the image if it hasn't been loaded yet.
int	getIconHeight()
int	getIconWidth()
void	paintIcon(java.awt.Component c, java.awt.Graphics g, int x, int y)

Methods inherited from class java.lang.Object

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

Field Detail

name

private java.lang.String name

image

private javax.swing.ImageIcon image

Constructor Detail

ImageProxy

public ImageProxy(java.lang.String name)

Constructs a proxy for delayed loading of an image file.

Parameters:

name - the file name

Method Detail

paintIcon

public void paintIcon(java.awt.Component c,
                      java.awt.Graphics g,
                      int x,
                      int y)

Specified by:

paintIcon in interface javax.swing.Icon

getIconWidth

public int getIconWidth()

Specified by:

getIconWidth in interface javax.swing.Icon

getIconHeight

public int getIconHeight()

Specified by:

getIconHeight in interface javax.swing.Icon

ensureImageLoaded

private void ensureImageLoaded()

Loads the image if it hasn't been loaded yet. Prints a message when the image is loaded.