tim/prune/save/KmlExporter.java

   1 package tim.prune.save;
   2
   3 import java.awt.BorderLayout;
   4 import java.awt.Color;
   5 import java.awt.Component;
   6 import java.awt.Dimension;
   7 import java.awt.FlowLayout;
   8 import java.awt.event.ActionEvent;
   9 import java.awt.event.ActionListener;
  10 import java.awt.event.MouseAdapter;
  11 import java.awt.event.MouseEvent;
  12 import java.awt.image.BufferedImage;
  13 import java.io.File;
  14 import java.io.FileOutputStream;
  15 import java.io.IOException;
  16 import java.io.OutputStreamWriter;
  17 import java.io.Writer;
  18 import java.util.Iterator;
  19 import java.util.zip.ZipEntry;
  20 import java.util.zip.ZipOutputStream;
  21
  22 import javax.imageio.ImageIO;
  23 import javax.imageio.ImageWriter;
  24 import javax.swing.Box;
  25 import javax.swing.BoxLayout;
  26 import javax.swing.ImageIcon;
  27 import javax.swing.JButton;
  28 import javax.swing.JCheckBox;
  29 import javax.swing.JDialog;
  30 import javax.swing.JFileChooser;
  31 import javax.swing.JLabel;
  32 import javax.swing.JOptionPane;
  33 import javax.swing.JPanel;
  34 import javax.swing.JProgressBar;
  35 import javax.swing.JTextField;
  36 import javax.swing.SwingConstants;
  37
  38 import tim.prune.App;
  39 import tim.prune.GenericFunction;
  40 import tim.prune.I18nManager;
  41 import tim.prune.UpdateMessageBroker;
  42 import tim.prune.config.ColourUtils;
  43 import tim.prune.config.Config;
  44 import tim.prune.data.Altitude;
  45 import tim.prune.data.Coordinate;
  46 import tim.prune.data.DataPoint;
  47 import tim.prune.data.Field;
  48 import tim.prune.data.Track;
  49 import tim.prune.data.TrackInfo;
  50 import tim.prune.gui.ColourChooser;
  51 import tim.prune.gui.ColourPatch;
  52 import tim.prune.gui.ImageUtils;
  53 import tim.prune.load.GenericFileFilter;
  54
  55 /**
  56  * Class to export track information
  57  * into a specified Kml or Kmz file
  58  */
  59 public class KmlExporter extends GenericFunction implements Runnable
  60 {
  61         private TrackInfo _trackInfo = null;
  62         private Track _track = null;
  63         private JDialog _dialog = null;
  64         private JTextField _descriptionField = null;
  65         private PointTypeSelector _pointTypeSelector = null;
  66         private JCheckBox _altitudesCheckbox = null;
  67         private JCheckBox _kmzCheckbox = null;
  68         private JCheckBox _exportImagesCheckbox = null;
  69         private ColourPatch _colourPatch = null;
  70         private JLabel _progressLabel = null;
  71         private JProgressBar _progressBar = null;
  72         private Dimension[] _imageDimensions = null;
  73         private JFileChooser _fileChooser = null;
  74         private File _exportFile = null;
  75         private JButton _okButton = null;
  76         private boolean _cancelPressed = false;
  77         private ColourChooser _colourChooser = null;
  78
  79         // Filename of Kml file within zip archive
  80         private static final String KML_FILENAME_IN_KMZ = "doc.kml";
  81         // Default width and height of thumbnail images in Kmz
  82         private static final int DEFAULT_THUMBNAIL_WIDTH = 240;
  83         private static final int DEFAULT_THUMBNAIL_HEIGHT = 240;
  84         // Actual selected width and height of thumbnail images in Kmz
  85         private static int THUMBNAIL_WIDTH = 0;
  86         private static int THUMBNAIL_HEIGHT = 0;
  87         // Default track colour
  88         private static final Color DEFAULT_TRACK_COLOUR = new Color(204, 0, 0); // red
  89
  90
  91         /**
  92          * Constructor
  93          * @param inApp app object
  94          */
  95         public KmlExporter(App inApp)
  96         {
  97                 super(inApp);
  98                 _trackInfo = inApp.getTrackInfo();
  99                 _track = _trackInfo.getTrack();
 100         }
 101
 102         /** Get name key */
 103         public String getNameKey() {
 104                 return "function.exportkml";
 105         }
 106
 107         /**
 108          * Show the dialog to select options and export file
 109          */
 110         public void begin()
 111         {
 112                 // Make dialog window including whether to compress to kmz (and include pictures) or not
 113                 if (_dialog == null)
 114                 {
 115                         _dialog = new JDialog(_parentFrame, I18nManager.getText(getNameKey()), true);
 116                         _dialog.setLocationRelativeTo(_parentFrame);
 117                         _dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
 118                         _dialog.getContentPane().add(makeDialogComponents());
 119                         _dialog.pack();
 120                         _colourChooser = new ColourChooser(_dialog);
 121                 }
 122                 enableCheckboxes();
 123                 _descriptionField.setEnabled(true);
 124                 _okButton.setEnabled(true);
 125                 _progressLabel.setText("");
 126                 _progressBar.setVisible(false);
 127                 _dialog.setVisible(true);
 128         }
 129
 130
 131         /**
 132          * Create dialog components
 133          * @return Panel containing all gui elements in dialog
 134          */
 135         private Component makeDialogComponents()
 136         {
 137                 JPanel dialogPanel = new JPanel();
 138                 dialogPanel.setLayout(new BorderLayout(0, 5));
 139                 JPanel mainPanel = new JPanel();
 140                 mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.Y_AXIS));
 141                 // Make a central panel with the text box and checkboxes
 142                 JPanel descPanel = new JPanel();
 143                 descPanel.setLayout(new FlowLayout());
 144                 descPanel.add(new JLabel(I18nManager.getText("dialog.exportkml.text")));
 145                 _descriptionField = new JTextField(20);
 146                 descPanel.add(_descriptionField);
 147                 descPanel.setAlignmentX(Component.CENTER_ALIGNMENT);
 148                 mainPanel.add(descPanel);
 149                 dialogPanel.add(mainPanel, BorderLayout.CENTER);
 150                 // point type selection
 151                 _pointTypeSelector = new PointTypeSelector();
 152                 _pointTypeSelector.setAlignmentX(Component.CENTER_ALIGNMENT);
 153                 mainPanel.add(_pointTypeSelector);
 154                 // Colour definition
 155                 Color trackColour = ColourUtils.colourFromHex(Config.getConfigString(Config.KEY_KML_TRACK_COLOUR));
 156                 if (trackColour == null) {
 157                         trackColour = DEFAULT_TRACK_COLOUR;
 158                 }
 159                 _colourPatch = new ColourPatch(trackColour);
 160                 _colourPatch.addMouseListener(new MouseAdapter() {
 161                         public void mouseClicked(MouseEvent e) {
 162                                 _colourChooser.showDialog(_colourPatch.getBackground());
 163                                 Color colour = _colourChooser.getChosenColour();
 164                                 if (colour != null) _colourPatch.setColour(colour);
 165                         }
 166                 });
 167                 JPanel colourPanel = new JPanel();
 168                 colourPanel.add(new JLabel(I18nManager.getText("dialog.exportkml.trackcolour")));
 169                 colourPanel.add(_colourPatch);
 170                 mainPanel.add(colourPanel);
 171                 // Checkbox for altitude export
 172                 _altitudesCheckbox = new JCheckBox(I18nManager.getText("dialog.exportkml.altitude"));
 173                 _altitudesCheckbox.setHorizontalTextPosition(SwingConstants.LEFT);
 174                 _altitudesCheckbox.setAlignmentX(Component.CENTER_ALIGNMENT);
 175                 mainPanel.add(_altitudesCheckbox);
 176                 // Checkboxes for kmz export and image export
 177                 _kmzCheckbox = new JCheckBox(I18nManager.getText("dialog.exportkml.kmz"));
 178                 _kmzCheckbox.setHorizontalTextPosition(SwingConstants.LEFT);
 179                 _kmzCheckbox.setAlignmentX(Component.CENTER_ALIGNMENT);
 180                 _kmzCheckbox.addActionListener(new ActionListener() {
 181                         public void actionPerformed(ActionEvent e)
 182                         {
 183                                 // enable image checkbox if kmz activated
 184                                 enableCheckboxes();
 185                         }
 186                 });
 187                 mainPanel.add(_kmzCheckbox);
 188                 _exportImagesCheckbox = new JCheckBox(I18nManager.getText("dialog.exportkml.exportimages"));
 189                 _exportImagesCheckbox.setHorizontalTextPosition(SwingConstants.LEFT);
 190                 _exportImagesCheckbox.setAlignmentX(Component.CENTER_ALIGNMENT);
 191                 mainPanel.add(_exportImagesCheckbox);
 192                 mainPanel.add(Box.createVerticalStrut(10));
 193                 _progressLabel = new JLabel("...");
 194                 _progressLabel.setAlignmentX(Component.CENTER_ALIGNMENT);
 195                 mainPanel.add(_progressLabel);
 196                 _progressBar = new JProgressBar(0, 100);
 197                 _progressBar.setVisible(false);
 198                 _progressBar.setAlignmentX(Component.CENTER_ALIGNMENT);
 199                 mainPanel.add(_progressBar);
 200                 mainPanel.add(Box.createVerticalStrut(10));
 201                 // button panel at bottom
 202                 JPanel buttonPanel = new JPanel();
 203                 buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
 204                 _okButton = new JButton(I18nManager.getText("button.ok"));
 205                 ActionListener okListener = new ActionListener() {
 206                         public void actionPerformed(ActionEvent e)
 207                         {
 208                                 startExport();
 209                         }
 210                 };
 211                 _okButton.addActionListener(okListener);
 212                 _descriptionField.addActionListener(okListener);
 213                 buttonPanel.add(_okButton);
 214                 JButton cancelButton = new JButton(I18nManager.getText("button.cancel"));
 215                 cancelButton.addActionListener(new ActionListener() {
 216                         public void actionPerformed(ActionEvent e)
 217                         {
 218                                 _cancelPressed = true;
 219                                 _dialog.dispose();
 220                         }
 221                 });
 222                 buttonPanel.add(cancelButton);
 223                 dialogPanel.add(buttonPanel, BorderLayout.SOUTH);
 224                 return dialogPanel;
 225         }
 226
 227
 228         /**
 229          * Enable the checkboxes according to data
 230          */
 231         private void enableCheckboxes()
 232         {
 233                 _pointTypeSelector.init(_trackInfo);
 234                 boolean hasAltitudes = _track.hasData(Field.ALTITUDE);
 235                 if (!hasAltitudes) {_altitudesCheckbox.setSelected(false);}
 236                 boolean hasPhotos = _trackInfo.getPhotoList() != null && _trackInfo.getPhotoList().getNumPhotos() > 0;
 237                 _exportImagesCheckbox.setSelected(hasPhotos && _kmzCheckbox.isSelected());
 238                 _exportImagesCheckbox.setEnabled(hasPhotos && _kmzCheckbox.isSelected());
 239         }
 240
 241
 242         /**
 243          * Start the export process based on the input parameters
 244          */
 245         private void startExport()
 246         {
 247                 // OK pressed, now validate selection checkboxes
 248                 if (!_pointTypeSelector.getAnythingSelected()) {
 249                         JOptionPane.showMessageDialog(_parentFrame, I18nManager.getText("dialog.save.notypesselected"),
 250                                 I18nManager.getText("dialog.saveoptions.title"), JOptionPane.WARNING_MESSAGE);
 251                         return;
 252                 }
 253                 // Choose output file
 254                 if (_fileChooser == null)
 255                 {
 256                         _fileChooser = new JFileChooser();
 257                         _fileChooser.setDialogType(JFileChooser.SAVE_DIALOG);
 258                         _fileChooser.setFileFilter(new GenericFileFilter("filetype.kmlkmz", new String[] {"kml", "kmz"}));
 259                         // start from directory in config which should be set
 260                         String configDir = Config.getConfigString(Config.KEY_TRACK_DIR);
 261                         if (configDir != null) {_fileChooser.setCurrentDirectory(new File(configDir));}
 262                 }
 263                 String requiredExtension = null, otherExtension = null;
 264                 if (_kmzCheckbox.isSelected()) {
 265                         requiredExtension = ".kmz"; otherExtension = ".kml";
 266                 }
 267                 else {
 268                         requiredExtension = ".kml"; otherExtension = ".kmz";
 269                 }
 270                 _fileChooser.setAcceptAllFileFilterUsed(false);
 271                 // Allow choose again if an existing file is selected
 272                 boolean chooseAgain = false;
 273                 do
 274                 {
 275                         chooseAgain = false;
 276                         if (_fileChooser.showSaveDialog(_parentFrame) == JFileChooser.APPROVE_OPTION)
 277                         {
 278                                 // OK pressed and file chosen
 279                                 File file = _fileChooser.getSelectedFile();
 280                                 if (file.getName().toLowerCase().endsWith(otherExtension))
 281                                 {
 282                                         String path = file.getAbsolutePath();
 283                                         file = new File(path.substring(0, path.length()-otherExtension.length()) + requiredExtension);
 284                                 }
 285                                 else if (!file.getName().toLowerCase().endsWith(requiredExtension))
 286                                 {
 287                                         file = new File(file.getAbsolutePath() + requiredExtension);
 288                                 }
 289                                 // Check if file exists and if necessary prompt for overwrite
 290                                 Object[] buttonTexts = {I18nManager.getText("button.overwrite"), I18nManager.getText("button.cancel")};
 291                                 if (!file.exists() || JOptionPane.showOptionDialog(_parentFrame,
 292                                                 I18nManager.getText("dialog.save.overwrite.text"),
 293                                                 I18nManager.getText("dialog.save.overwrite.title"), JOptionPane.YES_NO_OPTION,
 294                                                 JOptionPane.WARNING_MESSAGE, null, buttonTexts, buttonTexts[1])
 295                                         == JOptionPane.YES_OPTION)
 296                                 {
 297                                         // New file or overwrite confirmed, so initiate export in separate thread
 298                                         _exportFile = file;
 299                                         _cancelPressed = false;
 300                                         new Thread(this).start();
 301                                 }
 302                                 else
 303                                 {
 304                                         chooseAgain = true;
 305                                 }
 306                         }
 307                 } while (chooseAgain);
 308         }
 309
 310
 311         /**
 312          * Run method for controlling separate thread for exporting
 313          */
 314         public void run()
 315         {
 316                 // Disable ok button to stop second go
 317                 _okButton.setEnabled(false);
 318                 _descriptionField.setEnabled(false);
 319                 // Initialise progress indicators
 320                 _progressLabel.setText(I18nManager.getText("confirm.running"));
 321                 _progressBar.setVisible(true);
 322                 _progressBar.setValue(0);
 323                 boolean exportToKmz = _kmzCheckbox.isSelected();
 324                 boolean exportImages = exportToKmz && _exportImagesCheckbox.isSelected();
 325                 _progressBar.setMaximum(exportImages?getNumPhotosToExport():1);
 326
 327                 // Determine photo thumbnail size from config
 328                 THUMBNAIL_WIDTH = Config.getConfigInt(Config.KEY_KMZ_IMAGE_WIDTH);
 329                 if (THUMBNAIL_WIDTH < DEFAULT_THUMBNAIL_WIDTH) {THUMBNAIL_WIDTH = DEFAULT_THUMBNAIL_WIDTH;}
 330                 THUMBNAIL_HEIGHT = Config.getConfigInt(Config.KEY_KMZ_IMAGE_HEIGHT);
 331                 if (THUMBNAIL_HEIGHT < DEFAULT_THUMBNAIL_HEIGHT) {THUMBNAIL_HEIGHT = DEFAULT_THUMBNAIL_HEIGHT;}
 332                 // Create array for image dimensions in case it's required
 333                 _imageDimensions = new Dimension[_track.getNumPoints()];
 334
 335                 OutputStreamWriter writer = null;
 336                 ZipOutputStream zipOutputStream = null;
 337                 try
 338                 {
 339                         // Select writer according to whether kmz requested or not
 340                         if (!_kmzCheckbox.isSelected())
 341                         {
 342                                 // normal writing to file
 343                                 writer = new OutputStreamWriter(new FileOutputStream(_exportFile));
 344                         }
 345                         else
 346                         {
 347                                 // kmz requested - need zip output stream
 348                                 zipOutputStream = new ZipOutputStream(new FileOutputStream(_exportFile));
 349                                 // Export images into zip file too if requested
 350                                 if (exportImages)
 351                                 {
 352                                         // Create thumbnails of each photo in turn and add to zip as images/image<n>.jpg
 353                                         // This is done first so that photo sizes are known for later
 354                                         exportThumbnails(zipOutputStream);
 355                                 }
 356                                 writer = new OutputStreamWriter(zipOutputStream);
 357                                 // Make an entry in the zip file for the kml file
 358                                 ZipEntry kmlEntry = new ZipEntry(KML_FILENAME_IN_KMZ);
 359                                 zipOutputStream.putNextEntry(kmlEntry);
 360                         }
 361                         // write file
 362                         final int numPoints = exportData(writer, exportImages);
 363                         // update config with selected track colour
 364                         Config.setConfigString(Config.KEY_KML_TRACK_COLOUR, ColourUtils.makeHexCode(_colourPatch.getBackground()));
 365                         // update progress bar
 366                         _progressBar.setValue(1);
 367
 368                         // close zip entry if necessary
 369                         if (zipOutputStream != null)
 370                         {
 371                                 // Make sure all buffered data in writer is flushed
 372                                 writer.flush();
 373                                 // Close off this entry in the zip file
 374                                 zipOutputStream.closeEntry();
 375                         }
 376
 377                         // close file
 378                         writer.close();
 379                         _imageDimensions = null;
 380                         // Store directory in config for later
 381                         Config.setConfigString(Config.KEY_TRACK_DIR, _exportFile.getParentFile().getAbsolutePath());
 382                         // show confirmation
 383                         UpdateMessageBroker.informSubscribers(I18nManager.getText("confirm.save.ok1")
 384                                  + " " + numPoints + " " + I18nManager.getText("confirm.save.ok2")
 385                                  + " " + _exportFile.getAbsolutePath());
 386                         // export successful so need to close dialog and return
 387                         _dialog.dispose();
 388                         return;
 389                 }
 390                 catch (IOException ioe)
 391                 {
 392                         try {
 393                                 if (writer != null) writer.close();
 394                         }
 395                         catch (IOException ioe2) {}
 396                         JOptionPane.showMessageDialog(_parentFrame,
 397                                 I18nManager.getText("error.save.failed") + " : " + ioe.getMessage(),
 398                                 I18nManager.getText("error.save.dialogtitle"), JOptionPane.ERROR_MESSAGE);
 399                 }
 400                 // if not returned already, export failed so need to recall the file selection
 401                 startExport();
 402         }
 403
 404
 405         /**
 406          * Export the information to the given writer
 407          * @param inWriter writer object
 408          * @param inExportImages true if image thumbnails are to be referenced
 409          * @return number of points written
 410          */
 411         private int exportData(OutputStreamWriter inWriter, boolean inExportImages)
 412         throws IOException
 413         {
 414                 boolean writeTrack = _pointTypeSelector.getTrackpointsSelected();
 415                 boolean writeWaypoints = _pointTypeSelector.getWaypointsSelected();
 416                 boolean writePhotos = _pointTypeSelector.getPhotopointsSelected();
 417                 boolean justSelection = _pointTypeSelector.getJustSelection();
 418                 inWriter.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<kml xmlns=\"http://earth.google.com/kml/2.1\">\n<Folder>\n");
 419                 inWriter.write("\t<name>");
 420                 if (_descriptionField != null && _descriptionField.getText() != null && !_descriptionField.getText().equals(""))
 421                 {
 422                         inWriter.write(_descriptionField.getText());
 423                 }
 424                 else
 425                 {
 426                         inWriter.write("Export from Prune");
 427                 }
 428                 inWriter.write("</name>\n");
 429
 430                 // Examine selection if required
 431                 int selStart = -1, selEnd = -1;
 432                 if (justSelection) {
 433                         selStart = _trackInfo.getSelection().getStart();
 434                         selEnd = _trackInfo.getSelection().getEnd();
 435                 }
 436
 437                 boolean absoluteAltitudes = _altitudesCheckbox.isSelected();
 438                 int i = 0;
 439                 DataPoint point = null;
 440                 boolean hasTrackpoints = false;
 441                 boolean writtenPhotoHeader = false;
 442                 final int numPoints = _track.getNumPoints();
 443                 int numSaved = 0;
 444                 int photoNum = 0;
 445                 // Loop over waypoints
 446                 for (i=0; i<numPoints; i++)
 447                 {
 448                         point = _track.getPoint(i);
 449                         boolean writeCurrentPoint = !justSelection || (i>=selStart && i<=selEnd);
 450                         // Make a blob for each waypoint
 451                         if (point.isWaypoint())
 452                         {
 453                                 if (writeWaypoints && writeCurrentPoint)
 454                                 {
 455                                         exportWaypoint(point, inWriter, absoluteAltitudes);
 456                                         numSaved++;
 457                                 }
 458                         }
 459                         else if (point.getPhoto() == null)
 460                         {
 461                                 hasTrackpoints = true;
 462                         }
 463                         // Make a blob with description for each photo
 464                         // Photos have already been written so picture sizes already known
 465                         if (point.getPhoto() != null && writePhotos && writeCurrentPoint)
 466                         {
 467                                 if (!writtenPhotoHeader)
 468                                 {
 469                                         inWriter.write("<Style id=\"camera_icon\"><IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/pal4/icon46.png</href></Icon></IconStyle></Style>");
 470                                         writtenPhotoHeader = true;
 471                                 }
 472                                 photoNum++;
 473                                 exportPhotoPoint(point, inWriter, inExportImages, i, photoNum, absoluteAltitudes);
 474                                 numSaved++;
 475                         }
 476                 }
 477                 // Make a line for the track, if there is one
 478                 if (hasTrackpoints && writeTrack)
 479                 {
 480                         // Set up strings for start and end of track segment
 481                         String trackStart = "\t<Placemark>\n\t\t<name>track</name>\n\t\t<Style>\n\t\t\t<LineStyle>\n"
 482                                 + "\t\t\t\t<color>cc" + reverse(ColourUtils.makeHexCode(_colourPatch.getBackground())) + "</color>\n"
 483                                 + "\t\t\t\t<width>4</width>\n\t\t\t</LineStyle>\n"
 484                                 + "\t\t\t<PolyStyle><color>33cc0000</color></PolyStyle>\n"
 485                                 + "\t\t</Style>\n\t\t<LineString>\n";
 486                         if (absoluteAltitudes) {
 487                                 trackStart += "\t\t\t<extrude>1</extrude>\n\t\t\t<altitudeMode>absolute</altitudeMode>\n";
 488                         }
 489                         else {
 490                                 trackStart += "\t\t\t<altitudeMode>clampToGround</altitudeMode>\n";
 491                         }
 492                         trackStart += "\t\t\t<coordinates>";
 493                         String trackEnd = "\t\t\t</coordinates>\n\t\t</LineString>\n\t</Placemark>";
 494
 495                         // Start segment
 496                         inWriter.write(trackStart);
 497                         // Loop over track points
 498                         boolean firstTrackpoint = true;
 499                         for (i=0; i<numPoints; i++)
 500                         {
 501                                 point = _track.getPoint(i);
 502                                 boolean writeCurrentPoint = !justSelection || (i>=selStart && i<=selEnd);
 503                                 if (!point.isWaypoint() && writeCurrentPoint)
 504                                 {
 505                                         // start new track segment if necessary
 506                                         if (point.getSegmentStart() && !firstTrackpoint) {
 507                                                 inWriter.write(trackEnd);
 508                                                 inWriter.write(trackStart);
 509                                         }
 510                                         if (point.getPhoto() == null)
 511                                         {
 512                                                 exportTrackpoint(point, inWriter);
 513                                                 numSaved++;
 514                                                 firstTrackpoint = false;
 515                                         }
 516                                 }
 517                         }
 518                         // end segment
 519                         inWriter.write(trackEnd);
 520                 }
 521                 inWriter.write("</Folder>\n</kml>");
 522                 return numSaved;
 523         }
 524
 525         /**
 526          * Reverse the hex code for the colours for KML's stupid backwards format
 527          * @param inCode colour code rrggbb
 528          * @return kml code bbggrr
 529          */
 530         private static String reverse(String inCode)
 531         {
 532                 return inCode.substring(4, 6) + inCode.substring(2, 4) + inCode.substring(0, 2);
 533         }
 534
 535         /**
 536          * Export the specified waypoint into the file
 537          * @param inPoint waypoint to export
 538          * @param inWriter writer object
 539          * @param inAbsoluteAltitude true for absolute altitude
 540          * @throws IOException on write failure
 541          */
 542         private void exportWaypoint(DataPoint inPoint, Writer inWriter, boolean inAbsoluteAltitude) throws IOException
 543         {
 544                 inWriter.write("\t<Placemark>\n\t\t<name>");
 545                 inWriter.write(inPoint.getWaypointName().trim());
 546                 inWriter.write("</name>\n");
 547                 inWriter.write("\t\t<Point>\n");
 548                 if (inAbsoluteAltitude && inPoint.hasAltitude()) {
 549                         inWriter.write("\t\t\t<altitudeMode>absolute</altitudeMode>\n");
 550                 }
 551                 else {
 552                         inWriter.write("\t\t\t<altitudeMode>clampToGround</altitudeMode>\n");
 553                 }
 554                 inWriter.write("\t\t\t<coordinates>");
 555                 inWriter.write(inPoint.getLongitude().output(Coordinate.FORMAT_DECIMAL_FORCE_POINT));
 556                 inWriter.write(',');
 557                 inWriter.write(inPoint.getLatitude().output(Coordinate.FORMAT_DECIMAL_FORCE_POINT));
 558                 inWriter.write(",");
 559                 if (inPoint.hasAltitude()) {
 560                         inWriter.write("" + inPoint.getAltitude().getStringValue(Altitude.Format.METRES));
 561                 }
 562                 else {
 563                         inWriter.write("0");
 564                 }
 565                 inWriter.write("</coordinates>\n\t\t</Point>\n\t</Placemark>\n");
 566         }
 567
 568
 569         /**
 570          * Export the specified photo into the file
 571          * @param inPoint data point including photo
 572          * @param inWriter writer object
 573          * @param inImageLink flag to set whether to export image links or not
 574          * @param inPointNumber number of point for accessing dimensions
 575          * @param inImageNumber number of image for filename
 576          * @param inAbsoluteAltitude true for absolute altitudes
 577          * @throws IOException on write failure
 578          */
 579         private void exportPhotoPoint(DataPoint inPoint, Writer inWriter, boolean inImageLink,
 580                 int inPointNumber, int inImageNumber, boolean inAbsoluteAltitude)
 581         throws IOException
 582         {
 583                 inWriter.write("\t<Placemark>\n\t\t<name>");
 584                 inWriter.write(inPoint.getPhoto().getFile().getName());
 585                 inWriter.write("</name>\n");
 586                 if (inImageLink)
 587                 {
 588                         Dimension imageSize = _imageDimensions[inPointNumber];
 589                         // Write out some html for the thumbnail images
 590                         inWriter.write("<description><![CDATA[<br/><table border='0'><tr><td><center><img src='images/image"
 591                                 + inImageNumber + ".jpg' width='" + imageSize.width + "' height='" + imageSize.height + "'></center></td></tr>"
 592                                 + "<tr><td><center>" + inPoint.getPhoto().getFile().getName() + "</center></td></tr></table>]]></description>");
 593                 }
 594                 inWriter.write("<styleUrl>#camera_icon</styleUrl>\n");
 595                 inWriter.write("\t\t<Point>\n");
 596                 if (inAbsoluteAltitude && inPoint.hasAltitude()) {
 597                         inWriter.write("\t\t\t<altitudeMode>absolute</altitudeMode>\n");
 598                 }
 599                 else {
 600                         inWriter.write("\t\t\t<altitudeMode>clampToGround</altitudeMode>\n");
 601                 }
 602                 inWriter.write("\t\t\t<coordinates>");
 603                 inWriter.write(inPoint.getLongitude().output(Coordinate.FORMAT_DECIMAL_FORCE_POINT));
 604                 inWriter.write(',');
 605                 inWriter.write(inPoint.getLatitude().output(Coordinate.FORMAT_DECIMAL_FORCE_POINT));
 606                 inWriter.write(",");
 607                 // Altitude if point has one
 608                 if (inPoint.hasAltitude()) {
 609                         inWriter.write("" + inPoint.getAltitude().getStringValue(Altitude.Format.METRES));
 610                 }
 611                 else {
 612                         inWriter.write("0");
 613                 }
 614                 inWriter.write("</coordinates>\n\t\t</Point>\n\t</Placemark>\n");
 615         }
 616
 617
 618         /**
 619          * Export the specified trackpoint into the file
 620          * @param inPoint trackpoint to export
 621          * @param inWriter writer object
 622          */
 623         private void exportTrackpoint(DataPoint inPoint, Writer inWriter) throws IOException
 624         {
 625                 inWriter.write(inPoint.getLongitude().output(Coordinate.FORMAT_DECIMAL_FORCE_POINT));
 626                 inWriter.write(',');
 627                 inWriter.write(inPoint.getLatitude().output(Coordinate.FORMAT_DECIMAL_FORCE_POINT));
 628                 // Altitude if point has one
 629                 inWriter.write(",");
 630                 if (inPoint.hasAltitude()) {
 631                         inWriter.write("" + inPoint.getAltitude().getStringValue(Altitude.Format.METRES));
 632                 }
 633                 else {
 634                         inWriter.write("0");
 635                 }
 636                 inWriter.write("\n");
 637         }
 638
 639
 640         /**
 641          * Loop through the photos and create thumbnails
 642          * @param inZipStream zip stream to save image files to
 643          */
 644         private void exportThumbnails(ZipOutputStream inZipStream) throws IOException
 645         {
 646                 // set up image writer
 647                 Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName("jpg");
 648                 if (writers == null || !writers.hasNext())
 649                 {
 650                         throw new IOException("no JPEG writer found");
 651                 }
 652                 ImageWriter imageWriter = writers.next();
 653
 654                 // Check selection checkbox
 655                 boolean justSelection = _pointTypeSelector.getJustSelection();
 656                 int selStart = -1, selEnd = -1;
 657                 if (justSelection) {
 658                         selStart = _trackInfo.getSelection().getStart();
 659                         selEnd = _trackInfo.getSelection().getEnd();
 660                 }
 661
 662                 int numPoints = _track.getNumPoints();
 663                 DataPoint point = null;
 664                 int photoNum = 0;
 665                 // Loop over all points in track
 666                 for (int i=0; i<numPoints && !_cancelPressed; i++)
 667                 {
 668                         point = _track.getPoint(i);
 669                         if (point.getPhoto() != null && (!justSelection || (i>=selStart && i<=selEnd)))
 670                         {
 671                                 photoNum++;
 672                                 // Make a new entry in zip file
 673                                 ZipEntry entry = new ZipEntry("images/image" + photoNum + ".jpg");
 674                                 inZipStream.putNextEntry(entry);
 675                                 // Load image and write to outstream
 676                                 ImageIcon icon = new ImageIcon(point.getPhoto().getFile().getAbsolutePath());
 677
 678                                 // Scale and smooth image to required size
 679                                 BufferedImage bufferedImage = ImageUtils.rotateImage(icon.getImage(),
 680                                         THUMBNAIL_WIDTH, THUMBNAIL_HEIGHT, point.getPhoto().getRotationDegrees());
 681                                 // Store image dimensions so that it doesn't have to be calculated again for the points
 682                                 _imageDimensions[i] = new Dimension(bufferedImage.getWidth(), bufferedImage.getHeight());
 683
 684                                 imageWriter.setOutput(ImageIO.createImageOutputStream(inZipStream));
 685                                 imageWriter.write(bufferedImage);
 686                                 // Close zip file entry
 687                                 inZipStream.closeEntry();
 688                                 // Update progress bar
 689                                 _progressBar.setValue(photoNum+1);
 690                         }
 691                 }
 692         }
 693
 694
 695         /**
 696          * @return number of correlated photos in the track
 697          */
 698         private int getNumPhotosToExport()
 699         {
 700                 int numPoints = _track.getNumPoints();
 701                 int numPhotos = 0;
 702                 DataPoint point = null;
 703                 // Loop over all points in track
 704                 for (int i=0; i<numPoints; i++)
 705                 {
 706                         point = _track.getPoint(i);
 707                         if (point.getPhoto() != null) {
 708                                 numPhotos++;
 709                         }
 710                 }
 711                 return numPhotos;
 712         }
 713 }