A JPanel with a textured background.
/*
* TexturedPanel.java
* 2006-11-02
*/
//cb.aloe.decor;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Insets;
import java.awt.Paint;
import java.awt.Rectangle;
import java.awt.TexturePaint;
import java.awt.image.BufferedImage;
import javax.swing.Icon;
import javax.swing.JPanel;
/**
* A JPanel with a textured background.
*
* @author Christopher Bach
*/
public class TexturedPanel extends JPanel {
private TexturePaint ourPainter = null;
private Color ourDefaultForeground = Color.white;
private Color ourDefaultBackground = Color.gray;
/**
* Creates a new TexturedPanel with a simple striped pattern.
*/
public TexturedPanel() {
super();
ourDefaultForeground = Color.white;
ourDefaultBackground = getBackground();
setupDefaultPainter(ourDefaultForeground, ourDefaultBackground);
}
/**
* Creates a new TexturedPanel with a simple striped pattern consisting of the
* given foreground and background colors.
*/
public TexturedPanel(Color foreground, Color background) {
super();
ourDefaultForeground = (foreground != null ? foreground : Color.white);
ourDefaultBackground = (background != null ? background : getBackground());
setupDefaultPainter(ourDefaultForeground, ourDefaultBackground);
}
/**
* Creates a new TexturedPanel with a simple pattern based on the provided
* texture map and consisting of the given foreground and background colors.
*/
public TexturedPanel(Color foreground, Color background, boolean[][] texture) {
super();
ourDefaultForeground = (foreground != null ? foreground : Color.white);
ourDefaultBackground = (background != null ? background : getBackground());
setupTexturePainter(ourDefaultForeground, ourDefaultBackground, texture, 1);
}
/**
* Creates a new TexturedPanel with a simple pattern based on the provided
* texture map and consisting of the given foreground and background colors.
*/
public TexturedPanel(Color foreground, Color background, boolean[][] texture, int scale) {
super();
ourDefaultForeground = (foreground != null ? foreground : Color.white);
ourDefaultBackground = (background != null ? background : getBackground());
setupTexturePainter(ourDefaultForeground, ourDefaultBackground, texture, scale);
}
/**
* Creates a new TexturedPanel that tiles the provided image.
*/
public TexturedPanel(Image texture) {
super();
ourDefaultForeground = Color.white;
ourDefaultBackground = getBackground();
if (texture != null)
setupImagePainter(texture);
else
setupDefaultPainter(ourDefaultForeground, ourDefaultBackground);
}
/**
* Creates a new TexturedPanel that tiles the provided icon.
*/
public TexturedPanel(Icon textureIcon) {
super();
ourDefaultForeground = Color.white;
ourDefaultBackground = getBackground();
if (textureIcon != null) {
setupIconPainter(textureIcon);
}
else
setupDefaultPainter(ourDefaultForeground, ourDefaultBackground);
}
/**
* Sets up this TexturedPanel to paint a simple background based on the
* provided texture and consisting of the provided colors.
*/
public void setTexture(Color foreground, Color background, boolean[][] texture) {
if (foreground != null && background != null && texture != null && texture.length > 0
&& texture[0].length > 0) {
setupTexturePainter(foreground, background, texture, 1);
}
}
/**
*
*/
public void setTexture(Color foreground, Color background, boolean[][] texture, int scale) {
setupTexturePainter(foreground, background, texture, scale);
}
/**
* Sets up this TexturedPanel to paint a striped background consisting of the
* provided colors.
*/
public void setTextureColors(Color foreground, Color background) {
if (foreground != null && background != null) {
ourDefaultForeground = foreground;
ourDefaultBackground = background;
setupDefaultPainter(foreground, background);
}
}
/**
* Sets up this TexturedPanel to paint a tiled background consisting of the
* provided image. If the image is null, the background will revert to a
* striped texture consisting of the last known colors.
*/
public void setTextureImage(Image texture) {
if (texture != null)
setupImagePainter(texture);
else
setupDefaultPainter(ourDefaultForeground, ourDefaultBackground);
}
/**
* Sets up this TexturedPanel to paint a tiled background consisting of the
* provided icon. If the icon is null, the background will revert to a striped
* texture consisting of the last known colors.
*/
public void setTextureIcon(Icon textureIcon) {
if (textureIcon != null) {
setupIconPainter(textureIcon);
}
else
setupDefaultPainter(ourDefaultForeground, ourDefaultBackground);
}
/**
* Returns the image buffer used by this TexturedPanel's painter.
*/
public Image getTexture() {
if (ourPainter == null)
return null;
else
return ourPainter.getImage();
}
/**
* Creates a new TexturePaint using the provided colors.
*/
private void setupDefaultPainter(Color foreground, Color background) {
if (foreground == null || background == null) {
ourPainter = null;
return;
}
BufferedImage buff = new BufferedImage(6, 6, BufferedImage.TYPE_INT_ARGB_PRE);
Graphics2D g2 = buff.createGraphics();
g2.setColor(background);
g2.fillRect(0, 0, 6, 6);
g2.setColor(foreground);
g2.drawLine(0, 2, 6, 2);
g2.drawLine(0, 5, 6, 5);
ourPainter = new TexturePaint(buff, new Rectangle(0, 0, 6, 6));
g2.dispose();
}
/**
* Creates a new TexturePaint using the provided colors and texture map.
*/
private void setupTexturePainter(Color foreground, Color background, boolean[][] texture,
int scale) {
if (texture == null || texture.length < 1 || texture[0].length < 1) {
setupDefaultPainter(foreground, background);
return;
}
else if (foreground == null || background == null) {
ourPainter = null;
return;
}
scale = Math.max(1, scale);
int w = texture[0].length;
int h = texture.length;
BufferedImage buff = new BufferedImage(w * scale, h * scale, BufferedImage.TYPE_INT_ARGB_PRE);
Graphics2D g2 = buff.createGraphics();
g2.setColor(background);
g2.fillRect(0, 0, w * scale, h * scale);
g2.setColor(foreground);
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
try {
if (texture[i][j])
g2.fillRect(j * scale, i * scale, scale, scale);
}
// g2.drawLine(j, i, j, i); }
catch (ArrayIndexOutOfBoundsException aob) {
}
}
}
ourPainter = new TexturePaint(buff, new Rectangle(0, 0, w * scale, h * scale));
g2.dispose();
}
/**
* Creates a new TexturePaint using the provided image.
*/
private void setupImagePainter(Image texture) {
if (texture == null) {
ourPainter = null;
return;
}
int w = texture.getWidth(this);
int h = texture.getHeight(this);
if (w <= 0 || h <= 0) {
ourPainter = null;
return;
}
BufferedImage buff = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB_PRE);
Graphics2D g2 = buff.createGraphics();
g2.drawImage(texture, 0, 0, this);
ourPainter = new TexturePaint(buff, new Rectangle(0, 0, w, h));
g2.dispose();
}
/**
* Creates a new TexturePaint using the provided icon.
*/
private void setupIconPainter(Icon texture) {
if (texture == null) {
ourPainter = null;
return;
}
int w = texture.getIconWidth();
int h = texture.getIconHeight();
if (w <= 0 || h <= 0) {
ourPainter = null;
return;
}
BufferedImage buff = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB_PRE);
Graphics2D g2 = buff.createGraphics();
texture.paintIcon(this, g2, 0, 0);
ourPainter = new TexturePaint(buff, new Rectangle(0, 0, w, h));
g2.dispose();
}
/**
* Paints this component with its textured background.
*/
protected void paintComponent(Graphics g) {
super.paintComponent(g);
if (ourPainter != null) {
int w = getWidth();
int h = getHeight();
Insets in = getInsets();
int x = in.left;
int y = in.top;
w = w - in.left - in.right;
h = h - in.top - in.bottom;
if (w >= 0 && h >= 0) {
Graphics2D g2 = (Graphics2D) g;
Paint pt = g2.getPaint();
g2.setPaint(ourPainter);
g2.fillRect(x, y, w, h);
g2.setPaint(pt);
}
}
}
}
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