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ShrinkIcon.java
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/**
* @(#)ShrinkIcon.java 1.0 04/05/12
*/
//package darrylbu.icon;
import java.awt.Component;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Insets;
import java.awt.image.ImageObserver;
import java.net.URL;
import javax.swing.ImageIcon;
/**
* An <CODE>Icon</CODE> that when necessary reduces the size of its image to
* fit within the component area, excluding any border or insets, optionally
* maintaining the image's aspect ratio by padding and centering the scaled
* image horizontally or vertically. When the component is larger than the image,
* the image will be drawn at its natural size and padded and centered
* horizontally and/or vertically.
* <P>
* The class is a drop-in replacement for <CODE>ImageIcon</CODE>, except that
* the no-argument constructor is not supported.
* <P>
* As the size of this icon is determined by the size of the component in
* which it is displayed, <CODE>ShrinkIcon</CODE> must only be used in
* conjunction with a component and layout that does not depend on the size
* of the component's Icon.
*
* @version 1.0 04/05/12
* @author Darryl
*/
public class ShrinkIcon extends StretchIcon {
/**
* Creates a <CODE>ShrinkIcon</CODE> from an array of bytes.
*
* @param imageData an array of pixels in an image format supported by
* the AWT Toolkit, such as GIF, JPEG, or (as of 1.3) PNG
*
* @see ImageIcon#ImageIcon(byte[])
*/
public ShrinkIcon(byte[] imageData) {
super(imageData);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from an array of bytes with the specified behavior.
*
* @param imageData an array of pixels in an image format supported by
* the AWT Toolkit, such as GIF, JPEG, or (as of 1.3) PNG
* @param proportionate <code>true</code> to retain the image's aspect ratio,
* <code>false</code> to allow distortion of the image to fit the
* component.
*
* @see ImageIcon#ImageIcon(byte[])
*/
public ShrinkIcon(byte[] imageData, boolean proportionate) {
super(imageData, proportionate);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from an array of bytes.
*
* @param imageData an array of pixels in an image format supported by
* the AWT Toolkit, such as GIF, JPEG, or (as of 1.3) PNG
* @param description a brief textual description of the image
*
* @see ImageIcon#ImageIcon(byte[], java.lang.String)
*/
public ShrinkIcon(byte[] imageData, String description) {
super(imageData, description);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from an array of bytes with the specified behavior.
*
* @see ImageIcon#ImageIcon(byte[])
* @param imageData an array of pixels in an image format supported by
* the AWT Toolkit, such as GIF, JPEG, or (as of 1.3) PNG
* @param description a brief textual description of the image
* @param proportionate <code>true</code> to retain the image's aspect ratio,
* <code>false</code> to allow distortion of the image to fit the
* component.
*
* @see ImageIcon#ImageIcon(byte[], java.lang.String)
*/
public ShrinkIcon(byte[] imageData, String description, boolean proportionate) {
super(imageData, description, proportionate);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from the image.
*
* @param image the image
*
* @see ImageIcon#ImageIcon(java.awt.Image)
*/
public ShrinkIcon(Image image) {
super(image);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from the image with the specified behavior.
*
* @param image the image
* @param proportionate <code>true</code> to retain the image's aspect ratio,
* <code>false</code> to allow distortion of the image to fit the
* component.
*
* @see ImageIcon#ImageIcon(java.awt.Image)
*/
public ShrinkIcon(Image image, boolean proportionate) {
super(image, proportionate);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from the image.
*
* @param image the image
* @param description a brief textual description of the image
*
* @see ImageIcon#ImageIcon(java.awt.Image, java.lang.String)
*/
public ShrinkIcon(Image image, String description) {
super(image, description);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from the image with the specified behavior.
*
* @param image the image
* @param description a brief textual description of the image
* @param proportionate <code>true</code> to retain the image's aspect ratio,
* <code>false</code> to allow distortion of the image to fit the
* component.
*
* @see ImageIcon#ImageIcon(java.awt.Image, java.lang.String)
*/
public ShrinkIcon(Image image, String description, boolean proportionate) {
super(image, description, proportionate);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from the specified file.
*
* @param filename a String specifying a filename or path
*
* @see ImageIcon#ImageIcon(java.lang.String)
*/
public ShrinkIcon(String filename) {
super(filename);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from the specified file with the specified behavior.
*
* @param filename a String specifying a filename or path
* @param proportionate <code>true</code> to retain the image's aspect ratio,
* <code>false</code> to allow distortion of the image to fit the
* component.
*
* @see ImageIcon#ImageIcon(java.lang.String)
*/
public ShrinkIcon(String filename, boolean proportionate) {
super(filename, proportionate);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from the specified file.
*
* @param filename a String specifying a filename or path
* @param description a brief textual description of the image
*
* @see ImageIcon#ImageIcon(java.lang.String, java.lang.String)
*/
public ShrinkIcon(String filename, String description) {
super(filename, description);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from the specified file with the specified behavior.
*
* @param filename a String specifying a filename or path
* @param description a brief textual description of the image
* @param proportionate <code>true</code> to retain the image's aspect ratio,
* <code>false</code> to allow distortion of the image to fit the
* component.
*
* @see ImageIcon#ImageIcon(java.awt.Image, java.lang.String)
*/
public ShrinkIcon(String filename, String description, boolean proportionate) {
super(filename, description, proportionate);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from the specified URL.
*
* @param location the URL for the image
*
* @see ImageIcon#ImageIcon(java.net.URL)
*/
public ShrinkIcon(URL location) {
super(location);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from the specified URL with the specified behavior.
*
* @param location the URL for the image
* @param proportionate <code>true</code> to retain the image's aspect ratio,
* <code>false</code> to allow distortion of the image to fit the
* component.
*
* @see ImageIcon#ImageIcon(java.net.URL)
*/
public ShrinkIcon(URL location, boolean proportionate) {
super(location, proportionate);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from the specified URL.
*
* @param location the URL for the image
* @param description a brief textual description of the image
*
* @see ImageIcon#ImageIcon(java.net.URL, java.lang.String)
*/
public ShrinkIcon(URL location, String description) {
super(location, description);
}
/**
* Creates a <CODE>ShrinkIcon</CODE> from the specified URL with the specified behavior.
*
* @param location the URL for the image
* @param description a brief textual description of the image
* @param proportionate <code>true</code> to retain the image's aspect ratio,
* <code>false</code> to allow distortion of the image to fit the
* component.
*
* @see ImageIcon#ImageIcon(java.net.URL, java.lang.String)
*/
public ShrinkIcon(URL location, String description, boolean proportionate) {
super(location, description, proportionate);
}
/**
* Paints the icon. If necessary, the image is reduced to fit the component to
* which it is painted, otherwise the image is centered horizontally and/or
* vertically and painted with a width and height not exceeding its natural size.
* <P>
* If the proportion has not been specified, or has been specified as
* <code>true</code>, the aspect ratio of the image will be preserved when
* reducing the size, by padding and centering the image horizontally or
* vertically.
* <P>
* If the proportion has been specified as <code>false</code> the image may be
* reduced on one or both axes, each independent of the other, to fit the component.
* <P>
* If this icon has no image observer,this method uses the <code>c</code> component
* as the observer.
*
* @param c the component to which the Icon is painted. This is used as the
* observer if this icon has no image observer
* @param g the graphics context
* @param x not used
* @param y not used
*
* @see StretchIcon#paintIcon(java.awt.Component, java.awt.Graphics, int, int)
*/
@Override
public synchronized void paintIcon(Component c, Graphics g, int x, int y) {
Image image = getImage();
if (image == null) {
return;
}
Insets insets = ((Container) c).getInsets();
x = insets.left;
y = insets.top;
int w = c.getWidth() - x - insets.right;
int h = c.getHeight() - y - insets.bottom;
int iw = image.getWidth(c);
int ih = image.getHeight(c);
if (proportionate && (w < iw || h < ih)) {
super.paintIcon(c, g, x, y);
} else {
if (w > iw) {
x += (w - iw) / 2;
}
if (h > ih) {
y += (h - ih) / 2;
}
ImageObserver io = getImageObserver();
g.drawImage(image, x, y, io == null ? c : io);
}
}
}