/*

File: AddText.java

Abstract: Shows how to add a text track to a Movie.

Version: 1.2

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*/

import quicktime.*;

import quicktime.io.*;

import quicktime.std.image.*;

import quicktime.std.movies.media.*;

import quicktime.std.movies.*;

import quicktime.std.*;

import quicktime.std.music.*;

import quicktime.qd.*;

import quicktime.util.QTPointer;

import java.awt.*;

public class AddText extends Frame {

    public static void main (String args[]) {

        new AddText();

    }

    public AddText() {

        try {

            QTSession.open();     

            QTFile qtf = null;

            // Provide a standard file open dialogue for our user to select an input movie.

            try {

                qtf = QTFile.standardGetFilePreview (QTFile.kStandardQTFileTypes);

            } catch (quicktime.io.QTIOException e) {

                  // catch a userCanceledErr and just exit the program

                if (e.errorCode() != Errors.userCanceledErr)

                  e.printStackTrace();

                else

                  System.out.println ("UserCanceled : Application needs media file to run. Quitting....");

                QTSession.close();

                System.exit(1);

            }

            DataRef urlMovie = new DataRef ("file://" + qtf.getPath());

            Movie m = Movie.fromDataRef (urlMovie,StdQTConstants.newMovieActive);

            float   textTrackHeight = 32;

            QDRect  movieBounds = m.getNaturalBoundsRect();

            float   movieWidth  = movieBounds.getWidthF();

            float   movieHeight = movieBounds.getHeightF();

            // Construct a new movie track that spans the width of our movie

            Track   textTrack = m.addTrack (movieWidth, textTrackHeight, 0 /* no volume */);

            Matrix  textTrackMatrix = textTrack.getMatrix();

            // Position the text track along the bottom of the Movie

            textTrackMatrix.translate (0, movieHeight - textTrackHeight);

            textTrack.setMatrix (textTrackMatrix);

            textTrack.setEnabled (true);

            int         movieTimeScale = m.getTimeScale();

            TextMedia   textMedia = new TextMedia (textTrack, movieTimeScale);

            QDRect      textBounds = new QDRect (movieWidth, movieHeight);

            // Commence an editing session on the empty textMedia

            textMedia.beginEdits();

            TimeInfo sampleTime = new TimeInfo (0, m.getDuration());

            String text = new String ("Adding a text track is easy with\rQuickTime for Java!");

            TextMediaHandler textMediaHandler = textMedia.getTextHandler();

            QTPointer textPointer = new QTPointer ( text.length() + 1, true );

            // Copy the contents of our Java String to a C style string for QuickTime.

            textPointer.copyFromArray ( 0, text.getBytes(), 0, text.length() );

            textMediaHandler.addTextSample (

                textPointer,

                QDFont.getFNum ( "Times" ), 

                10, 

                0,

                QDColor.black,

                QDColor.white,

                QDConstants.teCenter,

                textBounds,

                StdQTConstants.dfClipToTextBox | StdQTConstants.dfKeyedText,

                0,0,0,

                null,

                sampleTime.duration );

            textMedia.endEdits();

            textTrack.insertMedia (sampleTime.time, 0, sampleTime.duration, 1 );

            OpenMovieFile outStream = OpenMovieFile.asWrite (qtf); 

            m.updateResource (outStream, StdQTConstants.movieInDataForkResID, qtf.getName());

        } catch (QTException e) {

            e.printStackTrace();

            QTSession.close();

            System.exit(0);

        }

        QTSession.close();

        System.out.println ("Done.");

        System.exit(0);

    }

}