/**

* @(#)TileIcon.java 1.0 04/19/12

*/

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.Rectangle;

import java.awt.Shape;

import java.net.URL;

import javax.swing.ImageIcon;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.SwingUtilities;

import javax.swing.border.EmptyBorder;

/**

* An <CODE>Icon</CODE> that repeats its image horizontally and vertically to

* fill the component area, excluding any border or insets.

* <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 the Icon is determined by the size of the component in which

* it is displayed, <CODE>TileIcon</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 04/19/12

* @author Darryl

*/

public class TileIcon extends ImageIcon {

/**

* The type of the tiling mode

*/

public enum TileMode {

/**

* The default for a newly constructed <CODE>TileIcon</CODE>.

* The image will be tiled starting at the top left of the component.

*/

DEFAULT,

/**

* The image will be tiled such that the intersection of tile corners

* will be placed at the center of the tiled area.

*/

CENTER_CORNER,

/**

* The image will be tiled such that the center of a tile will be

* placed at the center of the tiled area.

*/

CENTER_CENTER

};

private TileMode tileMode = TileMode.DEFAULT;

/**

* Creates a <CODE>TileIcon</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 TileIcon(byte[] imageData) {

super(imageData);

}

/**

* Creates a <CODE>TileIcon</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[], String)

*/

public TileIcon(byte[] imageData, String description) {

super(imageData, description);

}

/**

* Creates a <CODE>TileIcon</CODE> from the image.

*

* @param image the image

*

* @see ImageIcon#ImageIcon(Image)

*/

public TileIcon(Image image) {

super(image);

}

/**

* Creates a <CODE>TileIcon</CODE> from the image.

*

* @param image the image

* @param description a brief textual description of the image

*

* @see ImageIcon#ImageIcon(Image, String)

*/

public TileIcon(Image image, String description) {

super(image, description);

}

/**

* Creates a <CODE>TileIcon</CODE> from the specified file.

*

* @param filename a String specifying a filename or path

*

* @see ImageIcon#ImageIcon(String)

*/

public TileIcon(String filename) {

super(filename);

}

/**

* Creates a <CODE>TileIcon</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(String, String)

*/

public TileIcon(String filename, String description) {

super(filename, description);

}

/**

* Creates a <CODE>TileIcon</CODE> from the specified URL.

*

* @param location the URL for the image

*

* @see ImageIcon#ImageIcon(URL)

*/

public TileIcon(URL location) {

super(location);

}

/**

* Creates a <CODE>TileIcon</CODE> from the specified URL.

*

* @param location the URL for the image

* @param description a brief textual description of the image

*

* @see ImageIcon#ImageIcon(URL, String)

*/

public TileIcon(URL location, String description) {

super(location, description);

}

/**

* Sets the tiling mode. If not explicitly set or if set to <CODE>TileMode.DEFAULT</CODE>,

* the image will be tiled starting from the top left corner of the component.

*

* @param tileMode the tiling style. One of the following constants

* defined in enum <code>TileMode</code>:

* <ul>

* <li><code>DEFAULT</code></li>

* <li><code>CENTER_CENTER</code></li>

* <li><code>CENTER_CORNER</code></li>

* </ul>

* @see TileMode

*/

public void setTileMode(TileMode tileMode) {

this.tileMode = tileMode;

}

/**

* Returns the tiling mode of this <code>TileIcon</code>

* @return the TileMode of this Icon: <code>DEFAULT</code>,

* <code>CENTER_CENTER</code> or <code>CENTER_CORNER</code>

*/

public TileMode getTileMode() {

return tileMode;

}

/**

* Paints the icon. The image is tiled over the area of the component to which

* it is painted.

* <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 ImageIcon#paintIcon(Component, Graphics, int, int)

*/

@Override

public void paintIcon(Component c, Graphics g, int x, int y) {

Image image = getImage();

if (image == null) {

return;

}

Shape clip = g.getClip();

int iw = image.getWidth(c);

int ih = image.getHeight(c);

Insets insets = ((Container) c).getInsets();

int w = c.getWidth();

int h = c.getHeight();

x = insets.left;

y = insets.top;

int x1 = c.getWidth() - insets.right;

int y1 = c.getHeight() - insets.bottom;

g.setClip(new Rectangle(x, y, x1 - x, y1 - y));

if (tileMode != TileMode.DEFAULT) {

int centerX = (x + x1) / 2;

int centerY = (y + y1) / 2;

switch (tileMode) {

case CENTER_CORNER:

x += (centerX - x) % iw - iw;

y += (centerY - y) % ih - ih;

break;

case CENTER_CENTER:

x += (centerX - iw / 2 - x) % iw - iw;

y += (centerY - ih / 2 - y) % ih - ih;

break;

}

}

for (int ix = x; ix <= x1; ix += iw) {

for (int iy = y; iy < y1; iy += ih) {

super.paintIcon(c, g, ix, iy);

}

}

g.setClip(clip);

}

/**

* Overridden to return 0. The size of this Icon is determined by

* the size of the component.

*

* @return 0

*/

@Override

public int getIconWidth() {

return 0;

}

/**

* Overridden to return 0. The size of this Icon is determined by

* the size of the component.

*

* @return 0

*/

@Override

public int getIconHeight() {

return 0;

}

}