tim/prune/gui/map/MapCanvas.java

   1 package tim.prune.gui.map;
   2
   3 import java.awt.BasicStroke;
   4 import java.awt.BorderLayout;
   5 import java.awt.Color;
   6 import java.awt.Cursor;
   7 import java.awt.Dimension;
   8 import java.awt.FlowLayout;
   9 import java.awt.FontMetrics;
  10 import java.awt.Graphics;
  11 import java.awt.Graphics2D;
  12 import java.awt.Image;
  13 import java.awt.event.ActionEvent;
  14 import java.awt.event.ActionListener;
  15 import java.awt.event.ItemEvent;
  16 import java.awt.event.ItemListener;
  17 import java.awt.event.KeyEvent;
  18 import java.awt.event.KeyListener;
  19 import java.awt.event.MouseEvent;
  20 import java.awt.event.MouseListener;
  21 import java.awt.event.MouseMotionListener;
  22 import java.awt.event.MouseWheelEvent;
  23 import java.awt.event.MouseWheelListener;
  24 import java.awt.image.BufferedImage;
  25
  26 import javax.swing.BorderFactory;
  27 import javax.swing.BoxLayout;
  28 import javax.swing.JButton;
  29 import javax.swing.JCheckBox;
  30 import javax.swing.JMenuItem;
  31 import javax.swing.JPanel;
  32 import javax.swing.JPopupMenu;
  33 import javax.swing.JSlider;
  34 import javax.swing.event.ChangeEvent;
  35 import javax.swing.event.ChangeListener;
  36
  37 import tim.prune.App;
  38 import tim.prune.DataSubscriber;
  39 import tim.prune.FunctionLibrary;
  40 import tim.prune.I18nManager;
  41 import tim.prune.UpdateMessageBroker;
  42 import tim.prune.config.ColourScheme;
  43 import tim.prune.config.Config;
  44 import tim.prune.data.Checker;
  45 import tim.prune.data.Coordinate;
  46 import tim.prune.data.DataPoint;
  47 import tim.prune.data.DoubleRange;
  48 import tim.prune.data.Field;
  49 import tim.prune.data.FieldList;
  50 import tim.prune.data.Latitude;
  51 import tim.prune.data.Longitude;
  52 import tim.prune.data.MidpointData;
  53 import tim.prune.data.Selection;
  54 import tim.prune.data.Track;
  55 import tim.prune.data.TrackInfo;
  56 import tim.prune.function.compress.MarkPointsInRectangleFunction;
  57 import tim.prune.function.edit.FieldEdit;
  58 import tim.prune.function.edit.FieldEditList;
  59 import tim.prune.gui.IconManager;
  60
  61 /**
  62  * Class for the map canvas, to display a background map and draw on it
  63  */
  64 public class MapCanvas extends JPanel implements MouseListener, MouseMotionListener, DataSubscriber,
  65         KeyListener, MouseWheelListener
  66 {
  67         /** App object for callbacks */
  68         private App _app = null;
  69         /** Track object */
  70         private Track _track = null;
  71         /** TrackInfo object */
  72         private TrackInfo _trackInfo = null;
  73         /** Selection object */
  74         private Selection _selection = null;
  75         /** Object to keep track of midpoints */
  76         private MidpointData _midpoints = null;
  77         /** Index of point clicked at mouseDown */
  78         private int _clickedPoint = -1;
  79         /** Previously selected point */
  80         private int _prevSelectedPoint = -1;
  81         /** Tile manager */
  82         private MapTileManager _tileManager = new MapTileManager(this);
  83         /** Image to display */
  84         private BufferedImage _mapImage = null;
  85         /** Slider for transparency */
  86         private JSlider _transparencySlider = null;
  87         /** Checkbox for scale bar */
  88         private JCheckBox _scaleCheckBox = null;
  89         /** Checkbox for maps */
  90         private JCheckBox _mapCheckBox = null;
  91         /** Checkbox for autopan */
  92         private JCheckBox _autopanCheckBox = null;
  93         /** Checkbox for connecting track points */
  94         private JCheckBox _connectCheckBox = null;
  95         /** Checkbox for enable edit mode */
  96         private JCheckBox _editmodeCheckBox = null;
  97         /** Right-click popup menu */
  98         private JPopupMenu _popup = null;
  99         /** Top component panel */
 100         private JPanel _topPanel = null;
 101         /** Side component panel */
 102         private JPanel _sidePanel = null;
 103         /** Scale bar */
 104         private ScaleBar _scaleBar = null;
 105         /* Data */
 106         private DoubleRange _latRange = null, _lonRange = null;
 107         private DoubleRange _xRange = null, _yRange = null;
 108         private boolean _recalculate = false;
 109         /** Flag to check bounds on next paint */
 110         private boolean _checkBounds = false;
 111         /** Map position */
 112         private MapPosition _mapPosition = null;
 113         /** coordinates of drag from point */
 114         private int _dragFromX = -1, _dragFromY = -1;
 115         /** coordinates of drag to point */
 116         private int _dragToX = -1, _dragToY = -1;
 117         /** coordinates of popup menu */
 118         private int _popupMenuX = -1, _popupMenuY = -1;
 119         /** Flag to prevent showing too often the error message about loading maps */
 120         private boolean _shownOsmErrorAlready = false;
 121         /** Current drawing mode */
 122         private int _drawMode = MODE_DEFAULT;
 123
 124         /** Constant for click sensitivity when selecting nearest point */
 125         private static final int CLICK_SENSITIVITY = 10;
 126         /** Constant for pan distance from key presses */
 127         private static final int PAN_DISTANCE = 20;
 128         /** Constant for pan distance from autopan */
 129         private static final int AUTOPAN_DISTANCE = 75;
 130
 131         // Colours
 132         private static final Color COLOR_MESSAGES   = Color.GRAY;
 133
 134         // Drawing modes
 135         private static final int MODE_DEFAULT = 0;
 136         private static final int MODE_ZOOM_RECT = 1;
 137         private static final int MODE_DRAW_POINTS_START = 2;
 138         private static final int MODE_DRAW_POINTS_CONT = 3;
 139         private static final int MODE_DRAG_POINT = 4;
 140         private static final int MODE_CREATE_MIDPOINT = 5;
 141         private static final int MODE_MARK_RECTANGLE = 6;
 142
 143         private static final int INDEX_UNKNOWN  = -2;
 144
 145
 146         /**
 147          * Constructor
 148          * @param inApp App object for callbacks
 149          * @param inTrackInfo track info object
 150          */
 151         public MapCanvas(App inApp, TrackInfo inTrackInfo)
 152         {
 153                 _app = inApp;
 154                 _trackInfo = inTrackInfo;
 155                 _track = inTrackInfo.getTrack();
 156                 _selection = inTrackInfo.getSelection();
 157                 _midpoints = new MidpointData();
 158                 _mapPosition = new MapPosition();
 159                 addMouseListener(this);
 160                 addMouseMotionListener(this);
 161                 addMouseWheelListener(this);
 162                 addKeyListener(this);
 163
 164                 // Make listener for changes to controls
 165                 ItemListener itemListener = new ItemListener() {
 166                         public void itemStateChanged(ItemEvent e)
 167                         {
 168                                 _recalculate = true;
 169                                 repaint();
 170                         }
 171                 };
 172                 // Make special listener for changes to map checkbox
 173                 ItemListener mapCheckListener = new ItemListener() {
 174                         public void itemStateChanged(ItemEvent e)
 175                         {
 176                                 _tileManager.clearMemoryCaches();
 177                                 _recalculate = true;
 178                                 Config.setConfigBoolean(Config.KEY_SHOW_MAP, e.getStateChange() == ItemEvent.SELECTED);
 179                                 UpdateMessageBroker.informSubscribers(); // to let menu know
 180                                 // If the track is only partially visible and you turn the map off, make the track fully visible again
 181                                 if (e.getStateChange() == ItemEvent.DESELECTED && _transparencySlider.getValue() < 0) {
 182                                         _transparencySlider.setValue(0);
 183                                 }
 184                         }
 185                 };
 186                 _topPanel = new OverlayPanel();
 187                 _topPanel.setLayout(new FlowLayout());
 188                 // Make slider for transparency
 189                 _transparencySlider = new JSlider(-6, 6, 0);
 190                 _transparencySlider.setPreferredSize(new Dimension(100, 20));
 191                 _transparencySlider.setMajorTickSpacing(1);
 192                 _transparencySlider.setSnapToTicks(true);
 193                 _transparencySlider.setOpaque(false);
 194                 _transparencySlider.setValue(0);
 195                 _transparencySlider.addChangeListener(new ChangeListener() {
 196                         public void stateChanged(ChangeEvent e)
 197                         {
 198                                 int val = _transparencySlider.getValue();
 199                                 if (val == 1 || val == -1)
 200                                         _transparencySlider.setValue(0);
 201                                 else {
 202                                         _recalculate = true;
 203                                         repaint();
 204                                 }
 205                         }
 206                 });
 207                 _transparencySlider.setFocusable(false); // stop slider from stealing keyboard focus
 208                 _topPanel.add(_transparencySlider);
 209                 // Add checkbox button for enabling scale bar
 210                 _scaleCheckBox = new JCheckBox(IconManager.getImageIcon(IconManager.SCALEBAR_BUTTON), true);
 211                 _scaleCheckBox.setSelectedIcon(IconManager.getImageIcon(IconManager.SCALEBAR_BUTTON_ON));
 212                 _scaleCheckBox.setOpaque(false);
 213                 _scaleCheckBox.setToolTipText(I18nManager.getText("menu.map.showscalebar"));
 214                 _scaleCheckBox.addItemListener(new ItemListener() {
 215                         public void itemStateChanged(ItemEvent e) {
 216                                 _scaleBar.setVisible(_scaleCheckBox.isSelected());
 217                         }
 218                 });
 219                 _scaleCheckBox.setFocusable(false); // stop button from stealing keyboard focus
 220                 _topPanel.add(_scaleCheckBox);
 221                 // Add checkbox button for enabling maps or not
 222                 _mapCheckBox = new JCheckBox(IconManager.getImageIcon(IconManager.MAP_BUTTON), false);
 223                 _mapCheckBox.setSelectedIcon(IconManager.getImageIcon(IconManager.MAP_BUTTON_ON));
 224                 _mapCheckBox.setOpaque(false);
 225                 _mapCheckBox.setToolTipText(I18nManager.getText("menu.map.showmap"));
 226                 _mapCheckBox.addItemListener(mapCheckListener);
 227                 _mapCheckBox.setFocusable(false); // stop button from stealing keyboard focus
 228                 _topPanel.add(_mapCheckBox);
 229                 // Add checkbox button for enabling autopan or not
 230                 _autopanCheckBox = new JCheckBox(IconManager.getImageIcon(IconManager.AUTOPAN_BUTTON), true);
 231                 _autopanCheckBox.setSelectedIcon(IconManager.getImageIcon(IconManager.AUTOPAN_BUTTON_ON));
 232                 _autopanCheckBox.setOpaque(false);
 233                 _autopanCheckBox.setToolTipText(I18nManager.getText("menu.map.autopan"));
 234                 _autopanCheckBox.addItemListener(itemListener);
 235                 _autopanCheckBox.setFocusable(false); // stop button from stealing keyboard focus
 236                 _topPanel.add(_autopanCheckBox);
 237                 // Add checkbox button for connecting points or not
 238                 _connectCheckBox = new JCheckBox(IconManager.getImageIcon(IconManager.POINTS_DISCONNECTED_BUTTON), true);
 239                 _connectCheckBox.setSelectedIcon(IconManager.getImageIcon(IconManager.POINTS_CONNECTED_BUTTON));
 240                 _connectCheckBox.setOpaque(false);
 241                 _connectCheckBox.setToolTipText(I18nManager.getText("menu.map.connect"));
 242                 _connectCheckBox.addItemListener(itemListener);
 243                 _connectCheckBox.setFocusable(false); // stop button from stealing keyboard focus
 244                 _topPanel.add(_connectCheckBox);
 245
 246                 // Add checkbox button for edit mode or not
 247                 _editmodeCheckBox = new JCheckBox(IconManager.getImageIcon(IconManager.EDIT_MODE_BUTTON), false);
 248                 _editmodeCheckBox.setSelectedIcon(IconManager.getImageIcon(IconManager.EDIT_MODE_BUTTON_ON));
 249                 _editmodeCheckBox.setOpaque(false);
 250                 _editmodeCheckBox.setToolTipText(I18nManager.getText("menu.map.editmode"));
 251                 _editmodeCheckBox.addItemListener(itemListener);
 252                 _editmodeCheckBox.setFocusable(false); // stop button from stealing keyboard focus
 253                 _topPanel.add(_editmodeCheckBox);
 254
 255                 // Add zoom in, zoom out buttons
 256                 _sidePanel = new OverlayPanel();
 257                 _sidePanel.setLayout(new BoxLayout(_sidePanel, BoxLayout.Y_AXIS));
 258                 JButton zoomInButton = new JButton(IconManager.getImageIcon(IconManager.ZOOM_IN_BUTTON));
 259                 zoomInButton.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
 260                 zoomInButton.setContentAreaFilled(false);
 261                 zoomInButton.setToolTipText(I18nManager.getText("menu.map.zoomin"));
 262                 zoomInButton.addActionListener(new ActionListener() {
 263                         public void actionPerformed(ActionEvent e)
 264                         {
 265                                 zoomIn();
 266                         }
 267                 });
 268                 zoomInButton.setFocusable(false); // stop button from stealing keyboard focus
 269                 _sidePanel.add(zoomInButton);
 270                 JButton zoomOutButton = new JButton(IconManager.getImageIcon(IconManager.ZOOM_OUT_BUTTON));
 271                 zoomOutButton.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
 272                 zoomOutButton.setContentAreaFilled(false);
 273                 zoomOutButton.setToolTipText(I18nManager.getText("menu.map.zoomout"));
 274                 zoomOutButton.addActionListener(new ActionListener() {
 275                         public void actionPerformed(ActionEvent e)
 276                         {
 277                                 zoomOut();
 278                         }
 279                 });
 280                 zoomOutButton.setFocusable(false); // stop button from stealing keyboard focus
 281                 _sidePanel.add(zoomOutButton);
 282
 283                 // Bottom panel for scale bar
 284                 _scaleBar = new ScaleBar();
 285
 286                 // add control panels to this one
 287                 setLayout(new BorderLayout());
 288                 _topPanel.setVisible(false);
 289                 _sidePanel.setVisible(false);
 290                 add(_topPanel, BorderLayout.NORTH);
 291                 add(_sidePanel, BorderLayout.WEST);
 292                 add(_scaleBar, BorderLayout.SOUTH);
 293                 // Make popup menu
 294                 makePopup();
 295         }
 296
 297
 298         /**
 299          * Make the popup menu for right-clicking the map
 300          */
 301         private void makePopup()
 302         {
 303                 _popup = new JPopupMenu();
 304                 JMenuItem zoomInItem = new JMenuItem(I18nManager.getText("menu.map.zoomin"));
 305                 zoomInItem.addActionListener(new ActionListener() {
 306                         public void actionPerformed(ActionEvent e)
 307                         {
 308                                 panMap((_popupMenuX - getWidth()/2)/2, (_popupMenuY - getHeight()/2)/2);
 309                                 zoomIn();
 310                         }});
 311                 _popup.add(zoomInItem);
 312                 JMenuItem zoomOutItem = new JMenuItem(I18nManager.getText("menu.map.zoomout"));
 313                 zoomOutItem.addActionListener(new ActionListener() {
 314                         public void actionPerformed(ActionEvent e)
 315                         {
 316                                 panMap(-(_popupMenuX - getWidth()/2), -(_popupMenuY - getHeight()/2));
 317                                 zoomOut();
 318                         }});
 319                 _popup.add(zoomOutItem);
 320                 JMenuItem zoomFullItem = new JMenuItem(I18nManager.getText("menu.map.zoomfull"));
 321                 zoomFullItem.addActionListener(new ActionListener() {
 322                         public void actionPerformed(ActionEvent e)
 323                         {
 324                                 zoomToFit();
 325                                 _recalculate = true;
 326                                 repaint();
 327                         }});
 328                 _popup.add(zoomFullItem);
 329                 _popup.addSeparator();
 330                 // Set background
 331                 JMenuItem setMapBgItem = new JMenuItem(
 332                         I18nManager.getText(FunctionLibrary.FUNCTION_SET_MAP_BG.getNameKey()));
 333                 setMapBgItem.addActionListener(new ActionListener() {
 334                         public void actionPerformed(ActionEvent e)
 335                         {
 336                                 FunctionLibrary.FUNCTION_SET_MAP_BG.begin();
 337                         }});
 338                 _popup.add(setMapBgItem);
 339                 // new point option
 340                 JMenuItem newPointItem = new JMenuItem(I18nManager.getText("menu.map.newpoint"));
 341                 newPointItem.addActionListener(new ActionListener() {
 342                         public void actionPerformed(ActionEvent e)
 343                         {
 344                                 _app.createPoint(createPointFromClick(_popupMenuX, _popupMenuY));
 345                         }});
 346                 _popup.add(newPointItem);
 347                 // draw point series
 348                 JMenuItem drawPointsItem = new JMenuItem(I18nManager.getText("menu.map.drawpoints"));
 349                 drawPointsItem.addActionListener(new ActionListener() {
 350                         public void actionPerformed(ActionEvent e)
 351                         {
 352                                 _drawMode = MODE_DRAW_POINTS_START;
 353                         }
 354                 });
 355                 _popup.add(drawPointsItem);
 356         }
 357
 358
 359         /**
 360          * Zoom to fit the current data area
 361          */
 362         private void zoomToFit()
 363         {
 364                 _latRange = _track.getLatRange();
 365                 _lonRange = _track.getLonRange();
 366                 _xRange = new DoubleRange(MapUtils.getXFromLongitude(_lonRange.getMinimum()),
 367                         MapUtils.getXFromLongitude(_lonRange.getMaximum()));
 368                 _yRange = new DoubleRange(MapUtils.getYFromLatitude(_latRange.getMinimum()),
 369                         MapUtils.getYFromLatitude(_latRange.getMaximum()));
 370                 _mapPosition.zoomToXY(_xRange.getMinimum(), _xRange.getMaximum(), _yRange.getMinimum(), _yRange.getMaximum(),
 371                         getWidth(), getHeight());
 372         }
 373
 374
 375         /**
 376          * Paint method
 377          * @see java.awt.Canvas#paint(java.awt.Graphics)
 378          */
 379         public void paint(Graphics inG)
 380         {
 381                 super.paint(inG);
 382                 if (_mapImage != null && (_mapImage.getWidth() != getWidth() || _mapImage.getHeight() != getHeight())) {
 383                         _mapImage = null;
 384                 }
 385                 if (_track.getNumPoints() > 0)
 386                 {
 387                         // Check for autopan if enabled / necessary
 388                         if (_autopanCheckBox.isSelected())
 389                         {
 390                                 int selectedPoint = _selection.getCurrentPointIndex();
 391                                 if (selectedPoint >= 0 && _dragFromX == -1 && selectedPoint != _prevSelectedPoint)
 392                                 {
 393                                         int px = getWidth() / 2 + _mapPosition.getXFromCentre(_track.getX(selectedPoint));
 394                                         int py = getHeight() / 2 + _mapPosition.getYFromCentre(_track.getY(selectedPoint));
 395                                         int panX = 0;
 396                                         int panY = 0;
 397                                         if (px < PAN_DISTANCE) {
 398                                                 panX = px - AUTOPAN_DISTANCE;
 399                                         }
 400                                         else if (px > (getWidth()-PAN_DISTANCE)) {
 401                                                 panX = AUTOPAN_DISTANCE + px - getWidth();
 402                                         }
 403                                         if (py < PAN_DISTANCE) {
 404                                                 panY = py - AUTOPAN_DISTANCE;
 405                                         }
 406                                         if (py > (getHeight()-PAN_DISTANCE)) {
 407                                                 panY = AUTOPAN_DISTANCE + py - getHeight();
 408                                         }
 409                                         if (panX != 0 || panY != 0) {
 410                                                 _mapPosition.pan(panX, panY);
 411                                         }
 412                                 }
 413                                 _prevSelectedPoint = selectedPoint;
 414                         }
 415
 416                         // Draw the map contents if necessary
 417                         if ((_mapImage == null || _recalculate))
 418                         {
 419                                 paintMapContents();
 420                                 _scaleBar.updateScale(_mapPosition.getZoom(), _mapPosition.getYFromPixels(0, 0));
 421                         }
 422                         // Draw the prepared image onto the panel
 423                         if (_mapImage != null) {
 424                                 inG.drawImage(_mapImage, 0, 0, getWidth(), getHeight(), null);
 425                         }
 426
 427                         switch (_drawMode)
 428                         {
 429                                 case MODE_DRAG_POINT:
 430                                         drawDragLines(inG, _selection.getCurrentPointIndex()-1, _selection.getCurrentPointIndex()+1);
 431                                         break;
 432
 433                                 case MODE_CREATE_MIDPOINT:
 434                                         drawDragLines(inG, _clickedPoint-1, _clickedPoint);
 435                                         break;
 436
 437                                 case MODE_ZOOM_RECT:
 438                                 case MODE_MARK_RECTANGLE:
 439                                         if (_dragFromX != -1 && _dragFromY != -1)
 440                                         {
 441                                                 // Draw the zoom rectangle if necessary
 442                                                 inG.setColor(Color.RED);
 443                                                 inG.drawLine(_dragFromX, _dragFromY, _dragFromX, _dragToY);
 444                                                 inG.drawLine(_dragFromX, _dragFromY, _dragToX, _dragFromY);
 445                                                 inG.drawLine(_dragToX, _dragFromY, _dragToX, _dragToY);
 446                                                 inG.drawLine(_dragFromX, _dragToY, _dragToX, _dragToY);
 447                                         }
 448                                         break;
 449
 450                                 case MODE_DRAW_POINTS_CONT:
 451                                         // draw line to mouse position to show drawing mode
 452                                         inG.setColor(Config.getColourScheme().getColour(ColourScheme.IDX_POINT));
 453                                         int prevIndex = _track.getNumPoints()-1;
 454                                         int px = getWidth() / 2 + _mapPosition.getXFromCentre(_track.getX(prevIndex));
 455                                         int py = getHeight() / 2 + _mapPosition.getYFromCentre(_track.getY(prevIndex));
 456                                         inG.drawLine(px, py, _dragToX, _dragToY);
 457                                         break;
 458                         }
 459                 }
 460                 else
 461                 {
 462                         inG.setColor(Config.getColourScheme().getColour(ColourScheme.IDX_BACKGROUND));
 463                         inG.fillRect(0, 0, getWidth(), getHeight());
 464                         inG.setColor(COLOR_MESSAGES);
 465                         inG.drawString(I18nManager.getText("display.nodata"), 50, getHeight()/2);
 466                         _scaleBar.updateScale(-1, 0);
 467                 }
 468                 // Draw slider etc on top
 469                 paintChildren(inG);
 470         }
 471
 472
 473         /**
 474          * Paint the map tiles and the points on to the _mapImage
 475          */
 476         private void paintMapContents()
 477         {
 478                 if (_mapImage == null || _mapImage.getWidth() != getWidth() || _mapImage.getHeight() != getHeight())
 479                 {
 480                         _mapImage = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_INT_RGB);
 481                 }
 482
 483                 // Clear map
 484                 Graphics g = _mapImage.getGraphics();
 485                 // Clear to background
 486                 g.setColor(Config.getColourScheme().getColour(ColourScheme.IDX_BACKGROUND));
 487                 g.fillRect(0, 0, getWidth(), getHeight());
 488
 489                 // Check whether maps are on or not
 490                 boolean showMap = Config.getConfigBoolean(Config.KEY_SHOW_MAP);
 491                 _mapCheckBox.setSelected(showMap);
 492
 493                 // reset error message
 494                 if (!showMap) {_shownOsmErrorAlready = false;}
 495                 _recalculate = false;
 496                 // Only get map tiles if selected
 497                 if (showMap)
 498                 {
 499                         // init tile cacher
 500                         _tileManager.centreMap(_mapPosition.getZoom(), _mapPosition.getCentreTileX(), _mapPosition.getCentreTileY());
 501
 502                         boolean loadingFailed = false;
 503                         if (_mapImage == null) return;
 504
 505                         if (_tileManager.isOverzoomed())
 506                         {
 507                                 // display overzoom message
 508                                 g.setColor(COLOR_MESSAGES);
 509                                 g.drawString(I18nManager.getText("map.overzoom"), 50, getHeight()/2);
 510                         }
 511                         else
 512                         {
 513                                 int numLayers = _tileManager.getNumLayers();
 514                                 // Loop over tiles drawing each one
 515                                 int[] tileIndices = _mapPosition.getTileIndices(getWidth(), getHeight());
 516                                 int[] pixelOffsets = _mapPosition.getDisplayOffsets(getWidth(), getHeight());
 517                                 for (int tileX = tileIndices[0]; tileX <= tileIndices[1] && !loadingFailed; tileX++)
 518                                 {
 519                                         int x = (tileX - tileIndices[0]) * 256 - pixelOffsets[0];
 520                                         for (int tileY = tileIndices[2]; tileY <= tileIndices[3]; tileY++)
 521                                         {
 522                                                 int y = (tileY - tileIndices[2]) * 256 - pixelOffsets[1];
 523                                                 // Loop over layers
 524                                                 for (int l=0; l<numLayers; l++)
 525                                                 {
 526                                                         Image image = _tileManager.getTile(l, tileX, tileY);
 527                                                         if (image != null) {
 528                                                                 g.drawImage(image, x, y, 256, 256, null);
 529                                                         }
 530                                                 }
 531                                         }
 532                                 }
 533
 534                                 // Make maps brighter / fainter according to slider
 535                                 final int brightnessIndex = Math.max(1, _transparencySlider.getValue()) - 1;
 536                                 if (brightnessIndex > 0)
 537                                 {
 538                                         final int[] alphas = {0, 40, 80, 120, 160, 210};
 539                                         Color bgColor = Config.getColourScheme().getColour(ColourScheme.IDX_BACKGROUND);
 540                                         bgColor = new Color(bgColor.getRed(), bgColor.getGreen(), bgColor.getBlue(), alphas[brightnessIndex]);
 541                                         g.setColor(bgColor);
 542                                         g.fillRect(0, 0, getWidth(), getHeight());
 543                                 }
 544                         }
 545                 }
 546
 547                 // Paint the track points on top
 548                 int pointsPainted = 1;
 549                 try
 550                 {
 551                         pointsPainted = paintPoints(g);
 552                 }
 553                 catch (NullPointerException npe) { // ignore, probably due to data being changed during drawing
 554                 }
 555
 556                 // free g
 557                 g.dispose();
 558
 559                 // Zoom to fit if no points found
 560                 if (pointsPainted <= 0 && _checkBounds) {
 561                         zoomToFit();
 562                         _recalculate = true;
 563                         repaint();
 564                 }
 565                 _checkBounds = false;
 566                 // enable / disable transparency slider
 567                 _transparencySlider.setEnabled(showMap);
 568         }
 569
 570
 571         /**
 572          * Paint the points using the given graphics object
 573          * @param inG Graphics object to use for painting
 574          * @return number of points painted, if any
 575          */
 576         private int paintPoints(Graphics inG)
 577         {
 578                 // Set up colours
 579                 final ColourScheme cs = Config.getColourScheme();
 580                 final int[] opacities = {255, 190, 130, 80, 40, 0};
 581                 int opacity = 255;
 582                 if (_transparencySlider.getValue() < 0)
 583                         opacity = opacities[-1 - _transparencySlider.getValue()];
 584                 final Color pointColour  = makeTransparentColour(cs.getColour(ColourScheme.IDX_POINT), opacity);
 585                 final Color rangeColour  = makeTransparentColour(cs.getColour(ColourScheme.IDX_SELECTION), opacity);
 586                 final Color currentColour = makeTransparentColour(cs.getColour(ColourScheme.IDX_PRIMARY), opacity);
 587                 final Color secondColour = makeTransparentColour(cs.getColour(ColourScheme.IDX_SECONDARY), opacity);
 588                 final Color textColour   = makeTransparentColour(cs.getColour(ColourScheme.IDX_TEXT), opacity);
 589
 590                 final int winWidth  = getWidth();
 591                 final int winHeight = getHeight();
 592                 final int halfWinWidth  = winWidth / 2;
 593                 final int halfWinHeight = winHeight / 2;
 594
 595                 final int numPoints = _track.getNumPoints();
 596                 final int[] xPixels = new int[numPoints];
 597                 final int[] yPixels = new int[numPoints];
 598
 599                 // try to set line width for painting
 600                 if (inG instanceof Graphics2D)
 601                 {
 602                         int lineWidth = Config.getConfigInt(Config.KEY_LINE_WIDTH);
 603                         if (lineWidth < 1 || lineWidth > 4) {lineWidth = 2;}
 604                         ((Graphics2D) inG).setStroke(new BasicStroke(lineWidth));
 605                 }
 606                 int pointsPainted = 0;
 607                 // draw track points
 608                 inG.setColor(pointColour);
 609                 int prevX = -1, prevY = -1;
 610                 boolean connectPoints = _connectCheckBox.isSelected();
 611                 boolean prevPointVisible = false, currPointVisible = false;
 612                 boolean anyWaypoints = false;
 613                 boolean isWaypoint = false;
 614                 for (int i=0; i<numPoints; i++)
 615                 {
 616                         // Calculate pixel position of point from its x, y coordinates
 617                         int px = halfWinWidth  + _mapPosition.getXFromCentre(_track.getX(i));
 618                         int py = halfWinHeight + _mapPosition.getYFromCentre(_track.getY(i));
 619                         px = wrapLongitudeValue(px, winWidth, _mapPosition.getZoom());
 620                         // Remember these calculated pixel values so they don't have to be recalculated
 621                         xPixels[i] = px; yPixels[i] = py;
 622
 623                         currPointVisible = px >= 0 && px < winWidth && py >= 0 && py < winHeight;
 624                         isWaypoint = _track.getPoint(i).isWaypoint();
 625                         anyWaypoints = anyWaypoints || isWaypoint;
 626                         if (currPointVisible)
 627                         {
 628                                 if (!isWaypoint)
 629                                 {
 630                                         // Draw rectangle for track point
 631                                         if (_track.getPoint(i).getDeleteFlag()) {
 632                                                 inG.setColor(currentColour);
 633                                         }
 634                                         else {
 635                                                 inG.setColor(pointColour);
 636                                         }
 637                                         inG.drawRect(px-2, py-2, 3, 3);
 638                                         pointsPainted++;
 639                                 }
 640                         }
 641                         if (!isWaypoint)
 642                         {
 643                                 // Connect track points if either of them are visible
 644                                 if (connectPoints && (currPointVisible || prevPointVisible)
 645                                  && !(prevX == -1 && prevY == -1)
 646                                  && !_track.getPoint(i).getSegmentStart())
 647                                 {
 648                                         inG.drawLine(prevX, prevY, px, py);
 649                                 }
 650                                 prevX = px; prevY = py;
 651                         }
 652                         prevPointVisible = currPointVisible;
 653                 }
 654
 655                 // Loop over points, just drawing blobs for waypoints
 656                 inG.setColor(textColour);
 657                 FontMetrics fm = inG.getFontMetrics();
 658                 int nameHeight = fm.getHeight();
 659                 if (anyWaypoints)
 660                 {
 661                         for (int i=0; i<_track.getNumPoints(); i++)
 662                         {
 663                                 if (_track.getPoint(i).isWaypoint())
 664                                 {
 665                                         int px = xPixels[i];
 666                                         int py = yPixels[i];
 667                                         if (px >= 0 && px < winWidth && py >= 0 && py < winHeight)
 668                                         {
 669                                                 inG.fillRect(px-3, py-3, 6, 6);
 670                                                 pointsPainted++;
 671                                         }
 672                                 }
 673                         }
 674                         // Loop over points again, now draw names for waypoints
 675                         for (int i=0; i<_track.getNumPoints(); i++)
 676                         {
 677                                 if (_track.getPoint(i).isWaypoint())
 678                                 {
 679                                         int px = xPixels[i];
 680                                         int py = yPixels[i];
 681                                         if (px >= 0 && px < winWidth && py >= 0 && py < winHeight)
 682                                         {
 683                                                 // Figure out where to draw waypoint name so it doesn't obscure track
 684                                                 String waypointName = _track.getPoint(i).getWaypointName();
 685                                                 int nameWidth = fm.stringWidth(waypointName);
 686                                                 boolean drawnName = false;
 687                                                 // Make arrays for coordinates right left up down
 688                                                 int[] nameXs = {px + 2, px - nameWidth - 2, px - nameWidth/2, px - nameWidth/2};
 689                                                 int[] nameYs = {py + (nameHeight/2), py + (nameHeight/2), py - 2, py + nameHeight + 2};
 690                                                 for (int extraSpace = 4; extraSpace < 13 && !drawnName; extraSpace+=2)
 691                                                 {
 692                                                         // Shift arrays for coordinates right left up down
 693                                                         nameXs[0] += 2; nameXs[1] -= 2;
 694                                                         nameYs[2] -= 2; nameYs[3] += 2;
 695                                                         // Check each direction in turn right left up down
 696                                                         for (int a=0; a<4; a++)
 697                                                         {
 698                                                                 if (nameXs[a] > 0 && (nameXs[a] + nameWidth) < winWidth
 699                                                                         && nameYs[a] < winHeight && (nameYs[a] - nameHeight) > 0
 700                                                                         && !overlapsPoints(nameXs[a], nameYs[a], nameWidth, nameHeight, textColour))
 701                                                                 {
 702                                                                         // Found a rectangle to fit - draw name here and quit
 703                                                                         inG.drawString(waypointName, nameXs[a], nameYs[a]);
 704                                                                         drawnName = true;
 705                                                                         break;
 706                                                                 }
 707                                                         }
 708                                                 }
 709                                         }
 710                                 }
 711                         }
 712                 }
 713                 // Loop over points, drawing blobs for photo / audio points
 714                 inG.setColor(secondColour);
 715                 for (int i=0; i<_track.getNumPoints(); i++)
 716                 {
 717                         if (_track.getPoint(i).hasMedia())
 718                         {
 719                                 int px = xPixels[i];
 720                                 int py = yPixels[i];
 721                                 if (px >= 0 && px < winWidth && py >= 0 && py < winHeight)
 722                                 {
 723                                         inG.drawRect(px-1, py-1, 2, 2);
 724                                         inG.drawRect(px-2, py-2, 4, 4);
 725                                         pointsPainted++;
 726                                 }
 727                         }
 728                 }
 729
 730                 // Draw selected range
 731                 if (_selection.hasRangeSelected())
 732                 {
 733                         inG.setColor(rangeColour);
 734                         for (int i=_selection.getStart(); i<=_selection.getEnd(); i++)
 735                         {
 736                                 int px = xPixels[i];
 737                                 int py = yPixels[i];
 738                                 inG.drawRect(px-1, py-1, 2, 2);
 739                         }
 740                 }
 741
 742                 // Draw crosshairs at selected point
 743                 int selectedPoint = _selection.getCurrentPointIndex();
 744                 if (selectedPoint >= 0)
 745                 {
 746                         int px = xPixels[selectedPoint];
 747                         int py = yPixels[selectedPoint];
 748                         inG.setColor(currentColour);
 749                         // crosshairs
 750                         inG.drawLine(px, 0, px, winHeight);
 751                         inG.drawLine(0, py, winWidth, py);
 752                 }
 753                 // Return the number of points painted
 754                 return pointsPainted;
 755         }
 756
 757         /**
 758          * Wrap the given pixel value if appropriate and possible
 759          * @param inPx Pixel x coordinate
 760          * @param inWinWidth window width in pixels
 761          * @param inZoom zoom level
 762          * @return modified pixel x coordinate
 763          */
 764         private static int wrapLongitudeValue(int inPx, int inWinWidth, int inZoom)
 765         {
 766                 if (inPx > inWinWidth)
 767                 {
 768                         // Pixel is too far right, could we wrap it back onto the screen?
 769                         int px = inPx;
 770                         while (px > inWinWidth) {
 771                                 px -= (256 << inZoom);
 772                         }
 773                         if (px >= 0) {
 774                                 return px; // successfully wrapped back onto the screen
 775                         }
 776                 }
 777                 else if (inPx < 0)
 778                 {
 779                         // Pixel is too far left, could we wrap it back onto the screen?
 780                         int px = inPx;
 781                         while (px < 0) {
 782                                 px += (256 << inZoom);
 783                         }
 784                         if (px < inWinWidth) {
 785                                 return px; // successfully wrapped back onto the screen
 786                         }
 787                 }
 788                 // Either it's already on the screen or couldn't be wrapped
 789                 return inPx;
 790         }
 791
 792         /**
 793          * Draw the lines while dragging a point
 794          * @param inG graphics object
 795          * @param inPrevIndex index of point to draw from
 796          * @param inNextIndex index of point to draw to
 797          */
 798         private void drawDragLines(Graphics inG, int inPrevIndex, int inNextIndex)
 799         {
 800                 inG.setColor(Config.getColourScheme().getColour(ColourScheme.IDX_POINT));
 801                 // line from prev point to cursor
 802                 if (inPrevIndex > -1 && !_track.getPoint(inPrevIndex+1).getSegmentStart())
 803                 {
 804                         final int px = getWidth() / 2 + _mapPosition.getXFromCentre(_track.getX(inPrevIndex));
 805                         final int py = getHeight() / 2 + _mapPosition.getYFromCentre(_track.getY(inPrevIndex));
 806                         inG.drawLine(px, py, _dragToX, _dragToY);
 807                 }
 808                 if (inNextIndex < _track.getNumPoints() && !_track.getPoint(inNextIndex).getSegmentStart())
 809                 {
 810                         final int px = getWidth() / 2 + _mapPosition.getXFromCentre(_track.getX(inNextIndex));
 811                         final int py = getHeight() / 2 + _mapPosition.getYFromCentre(_track.getY(inNextIndex));
 812                         inG.drawLine(px, py, _dragToX, _dragToY);
 813                 }
 814         }
 815
 816         /**
 817          * Tests whether there are any dark pixels within the specified x,y rectangle
 818          * @param inX left X coordinate
 819          * @param inY bottom Y coordinate
 820          * @param inWidth width of rectangle
 821          * @param inHeight height of rectangle
 822          * @param inTextColour colour of text
 823          * @return true if the rectangle overlaps stuff too close to the given colour
 824          */
 825         private boolean overlapsPoints(int inX, int inY, int inWidth, int inHeight, Color inTextColour)
 826         {
 827                 // each of the colour channels must be further away than this to count as empty
 828                 final int BRIGHTNESS_LIMIT = 80;
 829                 final int textRGB = inTextColour.getRGB();
 830                 final int textLow = textRGB & 255;
 831                 final int textMid = (textRGB >> 8) & 255;
 832                 final int textHigh = (textRGB >> 16) & 255;
 833                 try
 834                 {
 835                         // loop over x coordinate of rectangle
 836                         for (int x=0; x<inWidth; x++)
 837                         {
 838                                 // loop over y coordinate of rectangle
 839                                 for (int y=0; y<inHeight; y++)
 840                                 {
 841                                         int pixelColor = _mapImage.getRGB(inX + x, inY - y);
 842                                         // split into four components rgba
 843                                         int pixLow = pixelColor & 255;
 844                                         int pixMid = (pixelColor >> 8) & 255;
 845                                         int pixHigh = (pixelColor >> 16) & 255;
 846                                         //int fourthBit = (pixelColor >> 24) & 255; // alpha ignored
 847                                         // If colours are too close in any channel then it's an overlap
 848                                         if (Math.abs(pixLow-textLow) < BRIGHTNESS_LIMIT ||
 849                                                 Math.abs(pixMid-textMid) < BRIGHTNESS_LIMIT ||
 850                                                 Math.abs(pixHigh-textHigh) < BRIGHTNESS_LIMIT) {return true;}
 851                                 }
 852                         }
 853                 }
 854                 catch (NullPointerException e) {
 855                         // ignore null pointers, just return false
 856                 }
 857                 return false;
 858         }
 859
 860         /**
 861          * Make a semi-transparent colour for drawing with
 862          * @param inColour base colour (fully opaque)
 863          * @param inOpacity opacity where 0=invisible and 255=full
 864          * @return new colour object
 865          */
 866         private static Color makeTransparentColour(Color inColour, int inOpacity)
 867         {
 868                 if (inOpacity > 240) return inColour;
 869                 return new Color(inColour.getRed(), inColour.getGreen(), inColour.getBlue(), inOpacity);
 870         }
 871
 872         /**
 873          * Inform that tiles have been updated and the map can be repainted
 874          * @param inIsOk true if data loaded ok, false for error
 875          */
 876         public synchronized void tilesUpdated(boolean inIsOk)
 877         {
 878                 // Show message if loading failed (but not too many times)
 879                 if (!inIsOk && !_shownOsmErrorAlready && _mapCheckBox.isSelected())
 880                 {
 881                         _shownOsmErrorAlready = true;
 882                         // use separate thread to show message about failing to load osm images
 883                         new Thread(new Runnable() {
 884                                 public void run() {
 885                                         try {Thread.sleep(500);} catch (InterruptedException ie) {}
 886                                         _app.showErrorMessage("error.osmimage.dialogtitle", "error.osmimage.failed");
 887                                 }
 888                         }).start();
 889                 }
 890                 _recalculate = true;
 891                 repaint();
 892         }
 893
 894         /**
 895          * Zoom out, if not already at minimum zoom
 896          */
 897         public void zoomOut()
 898         {
 899                 _mapPosition.zoomOut();
 900                 _recalculate = true;
 901                 repaint();
 902         }
 903
 904         /**
 905          * Zoom in, if not already at maximum zoom
 906          */
 907         public void zoomIn()
 908         {
 909                 _mapPosition.zoomIn();
 910                 _recalculate = true;
 911                 repaint();
 912         }
 913
 914         /**
 915          * Pan map
 916          * @param inDeltaX x shift
 917          * @param inDeltaY y shift
 918          */
 919         public void panMap(int inDeltaX, int inDeltaY)
 920         {
 921                 _mapPosition.pan(inDeltaX, inDeltaY);
 922                 _recalculate = true;
 923                 repaint();
 924         }
 925
 926         /**
 927          * Create a DataPoint object from the given click coordinates
 928          * @param inX x coordinate of click
 929          * @param inY y coordinate of click
 930          * @return DataPoint with given coordinates and no altitude
 931          */
 932         private DataPoint createPointFromClick(int inX, int inY)
 933         {
 934                 double lat = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(inY, getHeight()));
 935                 double lon = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(inX, getWidth()));
 936                 return new DataPoint(new Latitude(lat, Coordinate.FORMAT_NONE),
 937                         new Longitude(lon, Coordinate.FORMAT_NONE), null);
 938         }
 939
 940         /**
 941          * Move a DataPoint object to the given mouse coordinates
 942          * @param startX start x coordinate of mouse
 943          * @param startY start y coordinate of mouse
 944          * @param endX end x coordinate of mouse
 945          * @param endY end y coordinate of mouse
 946          */
 947         private void movePointToMouse(int startX, int startY, int endX, int endY )
 948         {
 949                 double lat1 = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(startY, getHeight()));
 950                 double lon1 = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(startX, getWidth()));
 951                 double lat_delta = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(endY, getHeight())) - lat1;
 952                 double lon_delta = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(endX, getWidth())) - lon1;
 953
 954                 DataPoint point = _trackInfo.getCurrentPoint();
 955                 if (point == null) {
 956                         return;
 957                 }
 958
 959                 // Make lists for edit and undo, and add each changed field in turn
 960                 FieldEditList editList = new FieldEditList();
 961                 FieldEditList undoList = new FieldEditList();
 962
 963                 // Check field list
 964                 FieldList fieldList = _track.getFieldList();
 965                 int numFields = fieldList.getNumFields();
 966                 for (int i=0; i<numFields; i++)
 967                 {
 968                         Field field = fieldList.getField(i);
 969                         if (field == Field.LATITUDE) {
 970                                 editList.addEdit(new FieldEdit(field, Double.toString(point.getLatitude().getDouble() + lat_delta)));
 971                                 undoList.addEdit(new FieldEdit(field, point.getFieldValue(Field.LATITUDE)));
 972                         }
 973                         else if (field == Field.LONGITUDE) {
 974                                 editList.addEdit(new FieldEdit(field, Double.toString(point.getLongitude().getDouble() + lon_delta)));
 975                                 undoList.addEdit(new FieldEdit(field, point.getFieldValue(Field.LONGITUDE)));
 976                         }
 977                 }
 978                 _app.completePointEdit(editList, undoList);
 979         }
 980
 981
 982         /**
 983          * @see javax.swing.JComponent#getMinimumSize()
 984          */
 985         public Dimension getMinimumSize()
 986         {
 987                 final Dimension minSize = new Dimension(512, 300);
 988                 return minSize;
 989         }
 990
 991         /**
 992          * @see javax.swing.JComponent#getPreferredSize()
 993          */
 994         public Dimension getPreferredSize()
 995         {
 996                 return getMinimumSize();
 997         }
 998
 999
1000         /**
1001          * Respond to mouse click events
1002          * @see java.awt.event.MouseListener#mouseClicked(java.awt.event.MouseEvent)
1003          */
1004         public void mouseClicked(MouseEvent inE)
1005         {
1006                 if (_track != null && _track.getNumPoints() > 0)
1007                 {
1008                          // select point if it's a left-click
1009                         if (!inE.isMetaDown())
1010                         {
1011                                 if (inE.getClickCount() == 1)
1012                                 {
1013                                         // single click
1014                                         if (_drawMode == MODE_DEFAULT)
1015                                         {
1016                                                 int pointIndex = _clickedPoint;
1017                                                 if (pointIndex == INDEX_UNKNOWN)
1018                                                 {
1019                                                         // index hasn't been calculated yet
1020                                                         pointIndex = _track.getNearestPointIndex(
1021                                                          _mapPosition.getXFromPixels(inE.getX(), getWidth()),
1022                                                          _mapPosition.getYFromPixels(inE.getY(), getHeight()),
1023                                                          _mapPosition.getBoundsFromPixels(CLICK_SENSITIVITY), false);
1024                                                 }
1025                                                 // Extend selection for shift-click
1026                                                 if (inE.isShiftDown()) {
1027                                                         _trackInfo.extendSelection(pointIndex);
1028                                                 }
1029                                                 else {
1030                                                         _trackInfo.selectPoint(pointIndex);
1031                                                 }
1032                                         }
1033                                         else if (_drawMode == MODE_DRAW_POINTS_START)
1034                                         {
1035                                                 _app.createPoint(createPointFromClick(inE.getX(), inE.getY()));
1036                                                 _dragToX = inE.getX();
1037                                                 _dragToY = inE.getY();
1038                                                 _drawMode = MODE_DRAW_POINTS_CONT;
1039                                         }
1040                                         else if (_drawMode == MODE_DRAW_POINTS_CONT)
1041                                         {
1042                                                 DataPoint point = createPointFromClick(inE.getX(), inE.getY());
1043                                                 _app.createPoint(point);
1044                                                 point.setSegmentStart(false);
1045                                         }
1046                                 }
1047                                 else if (inE.getClickCount() == 2)
1048                                 {
1049                                         // double click
1050                                         if (_drawMode == MODE_DEFAULT) {
1051                                                 panMap(inE.getX() - getWidth()/2, inE.getY() - getHeight()/2);
1052                                                 zoomIn();
1053                                         }
1054                                         else if (_drawMode == MODE_DRAW_POINTS_START || _drawMode == MODE_DRAW_POINTS_CONT) {
1055                                                 _drawMode = MODE_DEFAULT;
1056                                         }
1057                                 }
1058                         }
1059                         else
1060                         {
1061                                 // show the popup menu for right-clicks
1062                                 _popupMenuX = inE.getX();
1063                                 _popupMenuY = inE.getY();
1064                                 _popup.show(this, _popupMenuX, _popupMenuY);
1065                         }
1066                 }
1067                 // Reset app mode
1068                 _app.setCurrentMode(App.AppMode.NORMAL);
1069                 if (_drawMode == MODE_MARK_RECTANGLE) _drawMode = MODE_DEFAULT;
1070         }
1071
1072         /**
1073          * Ignore mouse enter events
1074          * @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)
1075          */
1076         public void mouseEntered(MouseEvent inE)
1077         {
1078                 // ignore
1079         }
1080
1081         /**
1082          * Ignore mouse exited events
1083          * @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)
1084          */
1085         public void mouseExited(MouseEvent inE)
1086         {
1087                 // ignore
1088         }
1089
1090         /**
1091          * React to mouse pressed events to initiate a point drag
1092          * @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent)
1093          */
1094         public void mousePressed(MouseEvent inE)
1095         {
1096                 _clickedPoint = INDEX_UNKNOWN;
1097                 if (_track == null || _track.getNumPoints() <= 0)
1098                         return;
1099                 if (!inE.isMetaDown())
1100                 {
1101                         // Left mouse drag - check if point is near; if so select it for dragging
1102                         if (_drawMode == MODE_DEFAULT)
1103                         {
1104                                 /* Drag points if edit mode is enabled OR ALT is pressed */
1105                                 if (_editmodeCheckBox.isSelected() || inE.isAltDown() || inE.isAltGraphDown())
1106                                 {
1107                                         final double clickX = _mapPosition.getXFromPixels(inE.getX(), getWidth());
1108                                         final double clickY = _mapPosition.getYFromPixels(inE.getY(), getHeight());
1109                                         final double clickSens = _mapPosition.getBoundsFromPixels(CLICK_SENSITIVITY);
1110                                         _clickedPoint = _track.getNearestPointIndex(clickX, clickY, clickSens, false);
1111
1112                                         if (_clickedPoint >= 0)
1113                                         {
1114                                                 // TODO: maybe use another color of the cross or remove the cross while dragging???
1115
1116                                                 _trackInfo.selectPoint(_clickedPoint);
1117                                                 if (_trackInfo.getCurrentPoint() != null)
1118                                                 {
1119                                                         _drawMode = MODE_DRAG_POINT;
1120                                                         _dragFromX = _dragToX = inE.getX();
1121                                                         _dragFromY = _dragToY = inE.getY();
1122                                                 }
1123                                         }
1124                                         else
1125                                         {
1126                                                 // Not a click on a point, so check half-way between two (connected) trackpoints
1127                                                 int midpointIndex = _midpoints.getNearestPointIndex(clickX, clickY, clickSens);
1128                                                 if (midpointIndex > 0)
1129                                                 {
1130                                                         _drawMode = MODE_CREATE_MIDPOINT;
1131                                                         _clickedPoint = midpointIndex;
1132                                                         _dragFromX = _dragToX = inE.getX();
1133                                                         _dragFromY = _dragToY = inE.getY();
1134                                                 }
1135                                         }
1136                                 }
1137                         }
1138                 }
1139                 // else right-press ignored
1140         }
1141
1142         /**
1143          * Respond to mouse released events
1144          * @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
1145          */
1146         public void mouseReleased(MouseEvent inE)
1147         {
1148                 _recalculate = true;
1149
1150                 if (_drawMode == MODE_DRAG_POINT)
1151                 {
1152                         if (Math.abs(_dragToX - _dragFromX) > 2
1153                                 || Math.abs(_dragToY - _dragFromY) > 2)
1154                         {
1155                                 movePointToMouse(_dragFromX, _dragFromY, _dragToX, _dragToY );
1156                         }
1157                         _drawMode = MODE_DEFAULT;
1158                 }
1159                 else if (_drawMode == MODE_CREATE_MIDPOINT)
1160                 {
1161                         _drawMode = MODE_DEFAULT;
1162                         _app.createPoint(createPointFromClick(_dragToX, _dragToY), _clickedPoint);
1163                 }
1164                 else if (_drawMode == MODE_ZOOM_RECT)
1165                 {
1166                         if (Math.abs(_dragToX - _dragFromX) > 20
1167                          && Math.abs(_dragToY - _dragFromY) > 20)
1168                         {
1169                                 _mapPosition.zoomToPixels(_dragFromX, _dragToX, _dragFromY, _dragToY, getWidth(), getHeight());
1170                         }
1171                         _drawMode = MODE_DEFAULT;
1172                 }
1173                 else if (_drawMode == MODE_MARK_RECTANGLE)
1174                 {
1175                         // Reset app mode
1176                         _app.setCurrentMode(App.AppMode.NORMAL);
1177                         _drawMode = MODE_DEFAULT;
1178                         // Call a function to mark the points
1179                         MarkPointsInRectangleFunction marker = new MarkPointsInRectangleFunction(_app);
1180                         double lon1 = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(_dragFromX, getWidth()));
1181                         double lat1 = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(_dragFromY, getHeight()));
1182                         double lon2 = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(_dragToX, getWidth()));
1183                         double lat2 = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(_dragToY, getHeight()));
1184                         // Invalidate rectangle if pixel coords are (-1,-1)
1185                         if (_dragFromX < 0 || _dragFromY < 0) {
1186                                 lon1 = lon2;
1187                                 lat1 = lat2;
1188                         }
1189                         marker.setRectCoords(lon1, lat1, lon2, lat2);
1190                         marker.begin();
1191                 }
1192                 _dragFromX = _dragFromY = -1;
1193                 repaint();
1194         }
1195
1196         /**
1197          * Respond to mouse drag events
1198          * @see java.awt.event.MouseMotionListener#mouseDragged(java.awt.event.MouseEvent)
1199          */
1200         public void mouseDragged(MouseEvent inE)
1201         {
1202                 if (!inE.isMetaDown())
1203                 {
1204                         // Left mouse drag - either drag the point or pan the map
1205                         if (_drawMode == MODE_DRAG_POINT || _drawMode == MODE_CREATE_MIDPOINT)
1206                         {
1207                                 // move point
1208                                 _dragToX = inE.getX();
1209                                 _dragToY = inE.getY();
1210                                 _recalculate = true;
1211                                 repaint();
1212                         }
1213                         else if (_drawMode == MODE_MARK_RECTANGLE)
1214                         {
1215                                 // draw a rectangle for marking points
1216                                 if (_dragFromX == -1) {
1217                                         _dragFromX = inE.getX();
1218                                         _dragFromY = inE.getY();
1219                                 }
1220                                 _dragToX = inE.getX();
1221                                 _dragToY = inE.getY();
1222                                 repaint();
1223                         }
1224                         else
1225                         {
1226                                 // regular left-drag pans map by appropriate amount
1227                                 if (_dragFromX != -1)
1228                                 {
1229                                         panMap(_dragFromX - inE.getX(), _dragFromY - inE.getY());
1230                                 }
1231                                 _dragFromX = _dragToX = inE.getX();
1232                                 _dragFromY = _dragToY = inE.getY();
1233                         }
1234                 }
1235                 else
1236                 {
1237                         // Right-click and drag - update rectangle
1238                         _drawMode = MODE_ZOOM_RECT;
1239                         if (_dragFromX == -1) {
1240                                 _dragFromX = inE.getX();
1241                                 _dragFromY = inE.getY();
1242                         }
1243                         _dragToX = inE.getX();
1244                         _dragToY = inE.getY();
1245                         repaint();
1246                 }
1247         }
1248
1249         /**
1250          * Respond to mouse move events without button pressed
1251          * @param inEvent ignored
1252          */
1253         public void mouseMoved(MouseEvent inEvent)
1254         {
1255                 boolean useCrosshairs = false;
1256                 boolean useResize     = false;
1257                 // Ignore unless we're drawing points
1258                 if (_drawMode == MODE_DRAW_POINTS_CONT)
1259                 {
1260                         _dragToX = inEvent.getX();
1261                         _dragToY = inEvent.getY();
1262                         repaint();
1263                 }
1264                 else if (_drawMode == MODE_MARK_RECTANGLE) {
1265                         useResize = true;
1266                 }
1267                 else if (_editmodeCheckBox.isSelected() || inEvent.isAltDown() || inEvent.isAltGraphDown())
1268                 {
1269                         // Try to find a point or a midpoint at this location, and if there is one
1270                         // then change the cursor to crosshairs
1271                         final double clickX = _mapPosition.getXFromPixels(inEvent.getX(), getWidth());
1272                         final double clickY = _mapPosition.getYFromPixels(inEvent.getY(), getHeight());
1273                         final double clickSens = _mapPosition.getBoundsFromPixels(CLICK_SENSITIVITY);
1274                         useCrosshairs = (_track.getNearestPointIndex(clickX, clickY, clickSens, false) >= 0
1275                                 || _midpoints.getNearestPointIndex(clickX, clickY, clickSens) >= 0
1276                         );
1277                 }
1278                 if (useCrosshairs && !isCursorSet()) {
1279                         setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
1280                 }
1281                 else if (useResize && !isCursorSet()) {
1282                         setCursor(Cursor.getPredefinedCursor(Cursor.SE_RESIZE_CURSOR));
1283                 }
1284                 else if (!useCrosshairs && !useResize && isCursorSet()) {
1285                         setCursor(null);
1286                 }
1287         }
1288
1289         /**
1290          * Respond to status bar message from broker
1291          * @param inMessage message, ignored
1292          */
1293         public void actionCompleted(String inMessage)
1294         {
1295                 // ignore
1296         }
1297
1298         /**
1299          * Respond to data updated message from broker
1300          * @param inUpdateType type of update
1301          */
1302         public void dataUpdated(byte inUpdateType)
1303         {
1304                 _recalculate = true;
1305                 if ((inUpdateType & DataSubscriber.DATA_ADDED_OR_REMOVED) > 0) {
1306                         _checkBounds = true;
1307                 }
1308                 if ((inUpdateType & DataSubscriber.MAPSERVER_CHANGED) > 0) {
1309                         _tileManager.resetConfig();
1310                 }
1311                 if ((inUpdateType & (DataSubscriber.DATA_ADDED_OR_REMOVED + DataSubscriber.DATA_EDITED)) > 0) {
1312                         _midpoints.updateData(_track);
1313                 }
1314                 // See if rect mode has been activated
1315                 if (_app.getCurrentMode() == App.AppMode.DRAWRECT)
1316                 {
1317                         _drawMode = MODE_MARK_RECTANGLE;
1318                         if (!isCursorSet()) {
1319                                 setCursor(Cursor.getPredefinedCursor(Cursor.SE_RESIZE_CURSOR));
1320                         }
1321                 }
1322                 repaint();
1323                 // enable or disable components
1324                 boolean hasData = _track.getNumPoints() > 0;
1325                 _topPanel.setVisible(hasData);
1326                 _sidePanel.setVisible(hasData);
1327                 // grab focus for the key presses
1328                 this.requestFocus();
1329         }
1330
1331         /**
1332          * Respond to key presses on the map canvas
1333          * @param inE key event
1334          */
1335         public void keyPressed(KeyEvent inE)
1336         {
1337                 int code = inE.getKeyCode();
1338                 int currPointIndex = _selection.getCurrentPointIndex();
1339                 // Check for Ctrl key (for Linux/Win) or meta key (Clover key for Mac)
1340                 if (inE.isControlDown() || inE.isMetaDown())
1341                 {
1342                         // Shift as well makes things faster
1343                         final int pointIncrement = inE.isShiftDown()?3:1;
1344                         // Check for arrow keys to zoom in and out
1345                         if (code == KeyEvent.VK_UP)
1346                                 zoomIn();
1347                         else if (code == KeyEvent.VK_DOWN)
1348                                 zoomOut();
1349                         // Key nav for next/prev point
1350                         else if (code == KeyEvent.VK_LEFT && currPointIndex > 0)
1351                                 _trackInfo.incrementPointIndex(-pointIncrement);
1352                         else if (code == KeyEvent.VK_RIGHT)
1353                                 _trackInfo.incrementPointIndex(pointIncrement);
1354                         else if (code == KeyEvent.VK_PAGE_UP)
1355                                 _trackInfo.selectPoint(Checker.getPreviousSegmentStart(
1356                                         _trackInfo.getTrack(), _trackInfo.getSelection().getCurrentPointIndex()));
1357                         else if (code == KeyEvent.VK_PAGE_DOWN)
1358                                 _trackInfo.selectPoint(Checker.getNextSegmentStart(
1359                                         _trackInfo.getTrack(), _trackInfo.getSelection().getCurrentPointIndex()));
1360                         // Check for home and end
1361                         else if (code == KeyEvent.VK_HOME)
1362                                 _trackInfo.selectPoint(0);
1363                         else if (code == KeyEvent.VK_END)
1364                                 _trackInfo.selectPoint(_trackInfo.getTrack().getNumPoints()-1);
1365                 }
1366                 else
1367                 {
1368                         // Check for arrow keys to pan
1369                         int upwardsPan = 0;
1370                         if (code == KeyEvent.VK_UP)
1371                                 upwardsPan = -PAN_DISTANCE;
1372                         else if (code == KeyEvent.VK_DOWN)
1373                                 upwardsPan = PAN_DISTANCE;
1374                         int rightwardsPan = 0;
1375                         if (code == KeyEvent.VK_RIGHT)
1376                                 rightwardsPan = PAN_DISTANCE;
1377                         else if (code == KeyEvent.VK_LEFT)
1378                                 rightwardsPan = -PAN_DISTANCE;
1379                         panMap(rightwardsPan, upwardsPan);
1380                         // Check for escape
1381                         if (code == KeyEvent.VK_ESCAPE)
1382                                 _drawMode = MODE_DEFAULT;
1383                         // Check for backspace key to delete current point (delete key already handled by menu)
1384                         else if (code == KeyEvent.VK_BACK_SPACE && currPointIndex >= 0) {
1385                                 _app.deleteCurrentPoint();
1386                         }
1387                 }
1388         }
1389
1390         /**
1391          * @param inE key released event, ignored
1392          */
1393         public void keyReleased(KeyEvent e)
1394         {
1395                 // ignore
1396         }
1397
1398         /**
1399          * @param inE key typed event, ignored
1400          */
1401         public void keyTyped(KeyEvent inE)
1402         {
1403                 // ignore
1404         }
1405
1406         /**
1407          * @param inE mouse wheel event indicating scroll direction
1408          */
1409         public void mouseWheelMoved(MouseWheelEvent inE)
1410         {
1411                 int clicks = inE.getWheelRotation();
1412                 if (clicks < 0) {
1413                         panMap((inE.getX() - getWidth()/2)/2, (inE.getY() - getHeight()/2)/2);
1414                         zoomIn();
1415                 }
1416                 else if (clicks > 0) {
1417                         panMap(-(inE.getX() - getWidth()/2), -(inE.getY() - getHeight()/2));
1418                         zoomOut();
1419                 }
1420         }
1421
1422         /**
1423          * @return current map position
1424          */
1425         public MapPosition getMapPosition()
1426         {
1427                 return _mapPosition;
1428         }
1429 }