/*

 * QuickTime for Java SDK Sample Code

 *

 * Usage subject to restrictions in SDK License Agreement

 * Copyright: © 2000 Apple Computer, Inc.

 */

import java.awt.*;

import java.awt.event.*;

import quicktime.*;

import quicktime.app.display.QTCanvas;

import quicktime.app.sg.*;

import quicktime.io.QTFile;

import quicktime.qd.*;

/** This example demonstrates how to use the QuickTime 5 broadcasting API to do

  * audio and video broadcasting from a Java Application

  */

public class BroadcastDrawer extends Frame {

    static public int WIDTH = 500;      // constants defining the height and width of the main window

    static public int HEIGHT= 300;

    /* constructor- creates the QTCanvas and creates some AWT components for controlling the broadcast */

    public BroadcastDrawer( String s ){

        super(s);

        setResizable(true);

        setBounds( 0, 0, WIDTH, HEIGHT);

        theCanvas = new QTCanvas (QTCanvas.kFreeResize, 0.5F, 0.5F);

        /* creating and intializing AWT components */

        setLayout( new BorderLayout() );

        add (theCanvas, "Center");

        startBtn = new Button ("Start Broadcast");

        ButtonListener listener = new ButtonListener();

        startBtn.addActionListener (listener);

        Panel statusPanel = new Panel();

        add (statusPanel, "South");

        statusPanel.add( startBtn );

        statusPanel.setBackground( Color.lightGray );

        Label timeBaseLabel = new Label( "Time base:" );

        timeBaseLabel.setLocation( 10, 10 );

        Label rateLabel = new Label("Data rate:" );

        rateLabel.setLocation( 10, 50 );

        currTimeLabel = new Label( "00:00:00.00  " );

        currTimeLabel.setLocation( 80, 10 );

        currRateLabel = new Label("0       ");

        currRateLabel.setLocation( 80, 50 );

        statusPanel.add(timeBaseLabel);

        statusPanel.add(currTimeLabel);

        statusPanel.add(rateLabel);

        statusPanel.add(currRateLabel);

        addWindowListener( new WindowAdapter()  //  handle quit when user closes main window

        {

            public void windowClosing( WindowEvent we )

            {

                stopBroadcast();        

                QTSession.close();      

                dispose();                  

            }

            public void windowClosed( WindowEvent we )

            {

                System.exit( 0 );       

            }

        });

    }

    /* Main entry point- open session, create instance of class, prepare for Broadcasting */

    public static void main (String[] args) {

        try {

            QTSession.open();

            BroadcastDrawer app = new BroadcastDrawer( "Broadcaster API Test" );

            app.show();

            app.toFront();

            app.prepareBroadcast();

        }

        catch (Exception e) {

            QTSession.close();  

            e.printStackTrace();

        }

    }   

   /** Prepare for broadcasting

    *  Display the file selection dialog to select an sdp file and show the settings dialog

    */  

    public void prepareBroadcast() {

        theDialog.show();

        try {

            thePres= new SimplePres( new QTFile( theDialog.getDirectory() + theDialog.getFile()), theCanvas );

            setTitle(theDialog.getFile());

            theCanvas.setClient( thePres.pDrawer, true );

            if (drawer == null)

            {

                drawer = new StatDrawer(thePres);   // draws the rate and time information

                drawer.timeLabel = currTimeLabel;

                drawer.rateLabel = currRateLabel;

            }

            else

                drawer.setPres(thePres);

        }

        catch (QTException qte) {

            qte.printStackTrace();

        } 

    } 

    /**

     * Stops the broadcast and all associated threads 

     */

    public void stopBroadcast(){

        thePres.stopBroadcast();

        startBtn.setLabel("Start Broadcast");

        drawer.stopTasking();

        isPlaying = false;

        currRateLabel.setText("0          ");

    }

    /**

     * Starts the broadcast and all associated threads

     */

    public void startBroadcast() {

        thePres.startBroadcast();

        startBtn.setLabel("StopBroadcast");

        drawer.startTasking();

        isPlaying = true;

    }

    /**

     * Respond to user interaction with the stop/start button

     */

    public class ButtonListener implements ActionListener {

        public void actionPerformed (ActionEvent e) {

            if (isPlaying) 

                stopBroadcast( );   

            else 

                startBroadcast();

        }

    }

    /* --- private data members --- */

    private Button      startBtn;           // AWT start button

    private boolean     isPlaying = false;  // internal state variable

    private Label       currTimeLabel;      // current time label

    private Label       currRateLabel;      // current data rate label

    private StatDrawer  drawer = null;      // statistics drawer

    private SimplePres  thePres;            // simple presenter object

    private QTCanvas    theCanvas;          // QTCanvas

    private FileDialog  theDialog = new FileDialog(this, "Choose an SDP File for the Broadcast", FileDialog.LOAD);

}