Java tutorial
/* * @(#)MDIApp.java 1.3 01/03/13 * * Copyright (c) 1999-2001 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.CheckboxMenuItem; import java.awt.Component; import java.awt.Dimension; import java.awt.FileDialog; import java.awt.Frame; import java.awt.Menu; import java.awt.MenuBar; import java.awt.MenuItem; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.io.IOException; import java.net.MalformedURLException; import java.net.URL; import javax.media.ControllerEvent; import javax.media.ControllerListener; import javax.media.EndOfMediaEvent; import javax.media.Manager; import javax.media.NoPlayerException; import javax.media.Player; import javax.media.PrefetchCompleteEvent; import javax.media.RealizeCompleteEvent; import javax.media.Time; import javax.swing.JDesktopPane; import javax.swing.JInternalFrame; import javax.swing.UIManager; import javax.swing.event.InternalFrameAdapter; import javax.swing.event.InternalFrameEvent; import com.sun.media.ui.MessageBox; public class MDIApp extends Frame { /************************************************************************* * MAIN PROGRAM / STATIC METHODS *************************************************************************/ public static void main(String args[]) { MDIApp mdi = new MDIApp(); } static void Fatal(String s) { MessageBox mb = new MessageBox("JMF Error", s); } /************************************************************************* * VARIABLES *************************************************************************/ JMFrame jmframe = null; JDesktopPane desktop; FileDialog fd = null; CheckboxMenuItem cbAutoLoop = null; Player player = null; Player newPlayer = null; String filename; /************************************************************************* * METHODS *************************************************************************/ public MDIApp() { super("Java Media Player"); // Add the desktop pane setLayout(new BorderLayout()); desktop = new JDesktopPane(); desktop.setDoubleBuffered(true); add("Center", desktop); setMenuBar(createMenuBar()); setSize(640, 480); setVisible(true); try { UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel"); } catch (Exception e) { System.err.println("Could not initialize java.awt Metal lnf"); } addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent we) { System.exit(0); } }); Manager.setHint(Manager.LIGHTWEIGHT_RENDERER, new Boolean(true)); } private MenuBar createMenuBar() { ActionListener al = new ActionListener() { public void actionPerformed(ActionEvent ae) { String command = ae.getActionCommand(); if (command.equals("Open")) { if (fd == null) { fd = new FileDialog(MDIApp.this, "Open File", FileDialog.LOAD); fd.setDirectory("/movies"); } fd.show(); if (fd.getFile() != null) { String filename = fd.getDirectory() + fd.getFile(); openFile("file:" + filename); } } else if (command.equals("Exit")) { dispose(); System.exit(0); } } }; MenuItem item; MenuBar mb = new MenuBar(); // File Menu Menu mnFile = new Menu("File"); mnFile.add(item = new MenuItem("Open")); item.addActionListener(al); mnFile.add(item = new MenuItem("Exit")); item.addActionListener(al); // Options Menu Menu mnOptions = new Menu("Options"); cbAutoLoop = new CheckboxMenuItem("Auto replay"); cbAutoLoop.setState(true); mnOptions.add(cbAutoLoop); mb.add(mnFile); mb.add(mnOptions); return mb; } /** * Open a media file. */ public void openFile(String filename) { String mediaFile = filename; Player player = null; // URL for our media file URL url = null; try { // Create an url from the file name and the url to the // document containing this applet. if ((url = new URL(mediaFile)) == null) { Fatal("Can't build URL for " + mediaFile); return; } // Create an instance of a player for this media try { player = Manager.createPlayer(url); } catch (NoPlayerException e) { Fatal("Error: " + e); } } catch (MalformedURLException e) { Fatal("Error:" + e); } catch (IOException e) { Fatal("Error:" + e); } if (player != null) { this.filename = filename; JMFrame jmframe = new JMFrame(player, filename); desktop.add(jmframe); } } } class JMFrame extends JInternalFrame implements ControllerListener { Player mplayer; Component visual = null; Component control = null; int videoWidth = 0; int videoHeight = 0; int controlHeight = 30; int insetWidth = 10; int insetHeight = 30; boolean firstTime = true; public JMFrame(Player player, String title) { super(title, true, true, true, true); getContentPane().setLayout(new BorderLayout()); setSize(320, 10); setLocation(50, 50); setVisible(true); mplayer = player; mplayer.addControllerListener((ControllerListener) this); mplayer.realize(); addInternalFrameListener(new InternalFrameAdapter() { public void internalFrameClosing(InternalFrameEvent ife) { mplayer.close(); } }); } public void controllerUpdate(ControllerEvent ce) { if (ce instanceof RealizeCompleteEvent) { mplayer.prefetch(); } else if (ce instanceof PrefetchCompleteEvent) { if (visual != null) return; if ((visual = mplayer.getVisualComponent()) != null) { Dimension size = visual.getPreferredSize(); videoWidth = size.width; videoHeight = size.height; getContentPane().add("Center", visual); } else videoWidth = 320; if ((control = mplayer.getControlPanelComponent()) != null) { controlHeight = control.getPreferredSize().height; getContentPane().add("South", control); } setSize(videoWidth + insetWidth, videoHeight + controlHeight + insetHeight); validate(); mplayer.start(); } else if (ce instanceof EndOfMediaEvent) { mplayer.setMediaTime(new Time(0)); mplayer.start(); } } }