Added an Wizard framework

src/zutil/ui/JImagePanel.java

@@ -0,0 +1,92 @@
+package zutil.ui;
+
+import java.awt.Graphics;
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+import javax.swing.JPanel;
+
+import zutil.FileFinder;
+import zutil.image.ImageUtil;
+
+/**
+ * This class is a panel with a background image
+ * @author Ziver
+ *
+ */
+public class JImagePanel extends JPanel {
+	private static final long serialVersionUID = 1L;
+
+	/** The original image */
+	private BufferedImage org_img;
+	/** An resized copy of the image */
+	private BufferedImage resized_img;
+	/** If the image should be scaled to the size of the component */
+	private boolean scale = true;
+	/** If the aspect ratio is to be kept */
+	private boolean keep_aspect = true;
+
+	public JImagePanel(){}
+	
+	/**
+	 * Creates a new instance of this class
+	 * 
+	 * @param img is the path to the image
+	 */
+	public JImagePanel(String img) throws IOException {
+		this(ImageIO.read( FileFinder.find( img ) ));
+	}
+
+	/**
+	 * Creates a new instance of this class
+	 * 
+	 * @param img is the image to use
+	 */
+	public JImagePanel(BufferedImage img) {
+		this.org_img = img;		
+	}
+
+	/**
+	 * Sets if the image should be scaled to the size of the panel
+	 * @param b true of false
+	 */
+	public void scale(boolean b){
+		scale = b;
+	}
+
+	/**
+	 * Sets the background image
+	 * 
+	 * @param img is the image that will be used
+	 */
+	public void setImage(BufferedImage img){
+		this.org_img = img;
+		this.resized_img = null;
+	}
+
+	/**
+	 * If the panel should keep the aspect ratio in the image when resizing
+	 */
+	public void keepAspect(boolean b){
+		keep_aspect = b;
+	}
+
+	public void paintComponent(Graphics g) {
+		if(org_img == null)
+			super.paintComponent(g);
+		else if(scale){
+			if(resized_img == null ||
+					this.getWidth() != resized_img.getWidth() || 
+					this.getHeight() != resized_img.getHeight()){
+				resized_img = ImageUtil.scale(org_img, this.getWidth(), this.getHeight(), keep_aspect);
+			}
+			g.drawImage(resized_img, 0, 0, null);
+		}
+		else{
+			g.drawImage(org_img, 0, 0, null);			
+		}
+
+	}
+
+}