Java tutorial
/* * @(#)ClipImage.java 1.2 98/07/09 * * Copyright (c) 1998 Sun Microsystems, Inc. All Rights Reserved. * * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use, * modify and redistribute this software in source and binary code form, * provided that i) this copyright notice and license appear on all copies of * the software; and ii) Licensee does not utilize the software in a manner * which is disparaging to Sun. * * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. * * This software is not designed or intended for use in on-line control of * aircraft, air traffic, aircraft navigation or aircraft communications; or in * the design, construction, operation or maintenance of any nuclear * facility. Licensee represents and warrants that it will not use or * redistribute the Software for such purposes. */ import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.Rectangle; import java.awt.RenderingHints; import java.awt.Shape; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.awt.font.FontRenderContext; import java.awt.font.TextLayout; import java.awt.geom.AffineTransform; import java.net.URL; import javax.swing.ImageIcon; import javax.swing.JApplet; import javax.swing.JFrame; import javax.swing.JPanel; public class Starry extends JApplet { public void init() { Image starry = new ImageIcon("yourFile.gif").getImage(); StarPanel starPanel = new StarPanel(starry); getContentPane().add(starPanel, BorderLayout.CENTER); } protected URL getURL(String filename) { URL codeBase = this.getCodeBase(); URL url = null; try { url = new URL(codeBase, filename); } catch (java.net.MalformedURLException e) { System.out.println("Couldn't create image: " + "badly specified URL"); return null; } return url; } public static void main(String[] args) { Image starry = new ImageIcon("yourFile.gif").getImage(); StarPanel starPanel = new StarPanel(starry); JFrame f = new JFrame("Starry"); f.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); f.getContentPane().add(starPanel, BorderLayout.CENTER); f.setSize(new Dimension(550, 200)); f.setVisible(true); } } class StarPanel extends JPanel { Image img; int w, h; public StarPanel(Image img) { this.img = img; } public void paintComponent(Graphics g) { super.paintComponent(g); setBackground(Color.white); w = getSize().width; h = getSize().height; Graphics2D g2; g2 = (Graphics2D) g; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g2.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY); FontRenderContext frc = g2.getFontRenderContext(); Font f = new Font("Helvetica", 1, w / 10); String s = new String("The Starry Night"); TextLayout textTl = new TextLayout(s, f, frc); AffineTransform transform = new AffineTransform(); Shape outline = textTl.getOutline(null); Rectangle r = outline.getBounds(); transform = g2.getTransform(); transform.translate(w / 2 - (r.width / 2), h / 2 + (r.height / 2)); g2.transform(transform); g2.setColor(Color.blue); g2.draw(outline); g2.setClip(outline); g2.drawImage(img, r.x, r.y, r.width, r.height, this); } }