Java Basics Using Qt Jambi Tutorial

/********************************************************************************
** Java Using Qt Jambi Tutorial Example PhotoSlideShow
**
** Created: Nov. 7 2008
**      by: Fernando L. Cuevas Jr
**
********************************************************************************/
package qt.book.example.photoslideshow;
import com.trolltech.qt.gui.*;
import com.trolltech.qt.phonon.AudioOutput;
import com.trolltech.qt.phonon.MediaObject;
import com.trolltech.qt.phonon.MediaSource;
import com.trolltech.qt.phonon.Phonon;

import java.lang.String;
import java.util.List;
public class PhotoSlideShowMainClass {
 private static List fileNames; 
 private static StringBuilder sbFileNames = new StringBuilder();
 List fileName;
 private static String labelMusicText;
 private static MediaObject mediaObject = new MediaObject();
 private static int numberOfPics = 0;
 private static String[] cntrFileNames;
 private static int cntrPixmap = 0;
 private static boolean timeInitial=true;
 private static Long picsTime;
 private static Long picsTime2;
 private static int cntrFiles = 0;
 
 public void addPhotos(){
  
  String filterPhotos = new String("Images (*.jpg *.png)");
  QFileDialog dialog = new QFileDialog();//create instance of file dialog
  dialog.setDirectory("/home"); //modify this depending on OS
  dialog.setFilter(filterPhotos);//this filters what it gets selected in file dialog *.jpg *.png
  dialog.setFileMode(QFileDialog.FileMode.ExistingFiles);//selects existing files
  dialog.show();//shows the file dialog
  
  if (dialog.exec() != 0){ //if ok button is clicked
   fileNames = dialog.selectedFiles(); //gets all selected filenames 
  }
  
  int row = -1;
  
  for (String files : fileNames){ //parses each file name in fileNames selected
   QListWidgetItem item = new QListWidgetItem(); 
   item.setIcon(new QIcon(files)); //inserts the thumbnails in listwidget
   item.setToolTip(files);
   Ui_PhotoSlideShowMainWindow.listWidget.insertItem(row, item); //inserts the items in existing widget
   sbFileNames.append(files + ";"); //you may use a fixed length array
                 numberOfPics++;
  }
  //System.out.println(sbFileNames.toString());
 }
 public void addMusic(){

  String filterMusic = new String("Music File (*.mp3 *.wma)");
  QFileDialog dialog = new QFileDialog();
  dialog.setFilter(filterMusic);
  dialog.setFileMode(QFileDialog.FileMode.ExistingFile);
  dialog.show();

  if (dialog.exec() != 0){
   fileName = dialog.selectedFiles();
  }
  
  for (String labelText : fileName){
   labelMusicText = labelText; 
  }
  int i;
  int cntr = labelMusicText.length();
  
  for (i=labelMusicText.length(); i > 0; i--){ //this for loop extracts the file name only from path
   if (labelMusicText.charAt(i-1) != '/'){
    cntr--; 
   }
   else{
    break;
   }
  }
  Ui_PhotoSlideShowMainWindow.label_Music.setText(labelMusicText.substring(cntr, labelMusicText.length()));
 
  for (i=0;i < sbFileNames.length(); i++){
   if (sbFileNames.charAt(i)==';'){
    cntrFiles++;
   }
  }
  
  cntrFileNames = new String[cntrFiles];
  int cntrJ=0;
  int cntrK=0;
  int cntrI=0;
  for (i=0;i < sbFileNames.length(); i++){
   if (sbFileNames.charAt(i)==';'){
    cntrFileNames[cntrI] = sbFileNames.substring(cntrK,i);
    //System.out.println(cntrFileNames[cntrI]);
    cntrK = cntrJ + 1;
    cntrJ++;
    cntrI++;
   }
   else{
    cntrJ++;
   }
  }
 
  PhotoSlideShowMainClass playmusic = new PhotoSlideShowMainClass();
  Ui_PhotoSlideShowMainWindow.pushButton_Play.clicked.connect(playmusic, "playMusic()"); //when play button is clicked, call playMusic() function

 }
    
    public void playMusic(){
     //this creates the object to play music file(start)
        mediaObject.setCurrentSource(new MediaSource(labelMusicText));
        AudioOutput audioOutput = new AudioOutput(Phonon.Category.MusicCategory);
        audioOutput.setVolume(70);
        Phonon.createPath(mediaObject, audioOutput);
        //this creates the object to play music file(end)
        mediaObject.play(); //plays the source file
        mediaObject.setTickInterval(1000); //change the tick interval to 1 second
        mediaObject.tick.connect(this, "tick(long)");
    }
    @SuppressWarnings("unused")
 private void tick(long time){ //this is called every 1 second
     long totalTime = mediaObject.totalTime();
     Ui_PhotoSlideShowMainWindow.horizontalSlider.setMaximum((int)totalTime); //sets the maximum time of slider
        int sliderTime = (int)mediaObject.currentTime();
        Ui_PhotoSlideShowMainWindow.horizontalSlider.setValue(sliderTime);
        if (timeInitial){ //gets the time of every pic during playback
         picsTime = totalTime / numberOfPics;
         picsTime2 = picsTime;
         timeInitial=false;
        }
        Ui_PhotoSlideShowMainWindow.label_Photo.setPixmap(new QPixmap(cntrFileNames[cntrPixmap]));
        
        if (picsTime < mediaObject.currentTime()){
         cntrPixmap++;
         Ui_PhotoSlideShowMainWindow.label_Photo.setPixmap(new QPixmap(cntrFileNames[cntrPixmap])); //loads the picture files to label_photo
         picsTime = picsTime + picsTime2;
        }
    }
 public void deletePhotos(){
  
 }
 public void deleteMusic(){
  
 }
 public void playSlideShow(){
  
 }
 public void pauseSlideShow(){
  
 }
 public void stopSlideShow(){
  
 }
}