src/tim/prune/gui/map/MapCanvas.java

   1 package tim.prune.gui.map;
   2
   3 import java.awt.*;
   4 import java.awt.event.*;
   5 import java.awt.image.BufferedImage;
   6
   7 import javax.swing.*;
   8 import javax.swing.event.ChangeEvent;
   9 import javax.swing.event.ChangeListener;
  10
  11 import tim.prune.App;
  12 import tim.prune.DataSubscriber;
  13 import tim.prune.FunctionLibrary;
  14 import tim.prune.I18nManager;
  15 import tim.prune.UpdateMessageBroker;
  16 import tim.prune.config.ColourScheme;
  17 import tim.prune.config.Config;
  18 import tim.prune.data.*;
  19 import tim.prune.function.compress.MarkPointsInRectangleFunction;
  20 import tim.prune.function.edit.FieldEdit;
  21 import tim.prune.function.edit.FieldEditList;
  22 import tim.prune.gui.IconManager;
  23 import tim.prune.gui.MultiStateCheckBox;
  24 import tim.prune.gui.colour.PointColourer;
  25 import tim.prune.tips.TipManager;
  26
  27 /**
  28  * Class for the map canvas, to display a background map and draw on it
  29  */
  30 public class MapCanvas extends JPanel implements MouseListener, MouseMotionListener, DataSubscriber,
  31         KeyListener, MouseWheelListener, TileConsumer
  32 {
  33         /** App object for callbacks */
  34         private App _app = null;
  35         /** Track object */
  36         private Track _track = null;
  37         /** TrackInfo object */
  38         private TrackInfo _trackInfo = null;
  39         /** Selection object */
  40         private Selection _selection = null;
  41         /** Object to keep track of midpoints */
  42         private MidpointData _midpoints = null;
  43         /** Index of point clicked at mouseDown */
  44         private int _clickedPoint = -1;
  45         /** Previously selected point */
  46         private int _prevSelectedPoint = -1;
  47         /** Tile manager */
  48         private MapTileManager _tileManager = new MapTileManager(this);
  49         /** Image to display */
  50         private BufferedImage _mapImage = null;
  51         /** Second image for drawing track (only needed for alpha blending) */
  52         private BufferedImage _trackImage = null;
  53         /** Slider for transparency */
  54         private JSlider _transparencySlider = null;
  55         /** Checkbox for scale bar */
  56         private JCheckBox _scaleCheckBox = null;
  57         /** Checkbox for maps */
  58         private JCheckBox _mapCheckBox = null;
  59         /** Checkbox for autopan */
  60         private JCheckBox _autopanCheckBox = null;
  61         /** Checkbox for connecting track points */
  62         private MultiStateCheckBox _connectCheckBox = null;
  63         /** Checkbox for enable edit mode */
  64         private JCheckBox _editmodeCheckBox = null;
  65         /** Right-click popup menu */
  66         private JPopupMenu _popup = null;
  67         /** Top component panel */
  68         private JPanel _topPanel = null;
  69         /** Side component panel */
  70         private JPanel _sidePanel = null;
  71         /** Scale bar */
  72         private ScaleBar _scaleBar = null;
  73         /* Data */
  74         private DoubleRange _latRange = null, _lonRange = null;
  75         private DoubleRange _xRange = null, _yRange = null;
  76         private boolean _recalculate = false;
  77         /** Flag to check bounds on next paint */
  78         private boolean _checkBounds = false;
  79         /** Map position */
  80         private MapPosition _mapPosition = null;
  81         /** coordinates of drag from point */
  82         private int _dragFromX = -1, _dragFromY = -1;
  83         /** coordinates of drag to point */
  84         private int _dragToX = -1, _dragToY = -1;
  85         /** coordinates of popup menu */
  86         private int _popupMenuX = -1, _popupMenuY = -1;
  87         /** Flag to prevent showing too often the error message about loading maps */
  88         private boolean _shownOsmErrorAlready = false;
  89         /** Current drawing mode */
  90         private int _drawMode = MODE_DEFAULT;
  91         /** Current waypoint icon definition */
  92         WpIconDefinition _waypointIconDefinition = null;
  93
  94         /** Constant for click sensitivity when selecting nearest point */
  95         private static final int CLICK_SENSITIVITY = 10;
  96         /** Constant for pan distance from key presses */
  97         private static final int PAN_DISTANCE = 20;
  98         /** Constant for pan distance from autopan */
  99         private static final int AUTOPAN_DISTANCE = 75;
 100
 101         // Colours
 102         private static final Color COLOR_MESSAGES   = Color.GRAY;
 103
 104         // Drawing modes
 105         private static final int MODE_DEFAULT = 0;
 106         private static final int MODE_ZOOM_RECT = 1;
 107         private static final int MODE_DRAW_POINTS_START = 2;
 108         private static final int MODE_DRAW_POINTS_CONT = 3;
 109         private static final int MODE_DRAG_POINT = 4;
 110         private static final int MODE_CREATE_MIDPOINT = 5;
 111         private static final int MODE_MARK_RECTANGLE = 6;
 112
 113         private static final int INDEX_UNKNOWN  = -2;
 114
 115
 116         /**
 117          * Constructor
 118          * @param inApp App object for callbacks
 119          * @param inTrackInfo track info object
 120          */
 121         public MapCanvas(App inApp, TrackInfo inTrackInfo)
 122         {
 123                 _app = inApp;
 124                 _trackInfo = inTrackInfo;
 125                 _track = inTrackInfo.getTrack();
 126                 _selection = inTrackInfo.getSelection();
 127                 _midpoints = new MidpointData();
 128                 _mapPosition = new MapPosition();
 129                 addMouseListener(this);
 130                 addMouseMotionListener(this);
 131                 addMouseWheelListener(this);
 132                 addKeyListener(this);
 133
 134                 // Make listener for changes to controls
 135                 ItemListener itemListener = new ItemListener() {
 136                         public void itemStateChanged(ItemEvent e)
 137                         {
 138                                 _recalculate = true;
 139                                 repaint();
 140                         }
 141                 };
 142                 // Make special listener for changes to map checkbox
 143                 ItemListener mapCheckListener = new ItemListener() {
 144                         public void itemStateChanged(ItemEvent e)
 145                         {
 146                                 _tileManager.clearMemoryCaches();
 147                                 _recalculate = true;
 148                                 Config.setConfigBoolean(Config.KEY_SHOW_MAP, e.getStateChange() == ItemEvent.SELECTED);
 149                                 UpdateMessageBroker.informSubscribers(); // to let menu know
 150                                 // If the track is only partially visible and you turn the map off, make the track fully visible again
 151                                 if (e.getStateChange() == ItemEvent.DESELECTED && _transparencySlider.getValue() < 0) {
 152                                         _transparencySlider.setValue(0);
 153                                 }
 154                         }
 155                 };
 156                 _topPanel = new OverlayPanel();
 157                 _topPanel.setLayout(new FlowLayout());
 158                 // Make slider for transparency
 159                 _transparencySlider = new JSlider(-6, 6, 0);
 160                 _transparencySlider.setPreferredSize(new Dimension(100, 20));
 161                 _transparencySlider.setMajorTickSpacing(1);
 162                 _transparencySlider.setSnapToTicks(true);
 163                 _transparencySlider.setOpaque(false);
 164                 _transparencySlider.setValue(0);
 165                 _transparencySlider.addChangeListener(new ChangeListener() {
 166                         public void stateChanged(ChangeEvent e)
 167                         {
 168                                 int val = _transparencySlider.getValue();
 169                                 if (val == 1 || val == -1)
 170                                         _transparencySlider.setValue(0);
 171                                 else {
 172                                         _recalculate = true;
 173                                         repaint();
 174                                 }
 175                         }
 176                 });
 177                 _transparencySlider.setFocusable(false); // stop slider from stealing keyboard focus
 178                 _topPanel.add(_transparencySlider);
 179                 // Add checkbox button for enabling scale bar
 180                 _scaleCheckBox = new JCheckBox(IconManager.getImageIcon(IconManager.SCALEBAR_BUTTON), true);
 181                 _scaleCheckBox.setSelectedIcon(IconManager.getImageIcon(IconManager.SCALEBAR_BUTTON_ON));
 182                 _scaleCheckBox.setOpaque(false);
 183                 _scaleCheckBox.setToolTipText(I18nManager.getText("menu.map.showscalebar"));
 184                 _scaleCheckBox.addItemListener(new ItemListener() {
 185                         public void itemStateChanged(ItemEvent e) {
 186                                 _scaleBar.setVisible(_scaleCheckBox.isSelected());
 187                         }
 188                 });
 189                 _scaleCheckBox.setFocusable(false); // stop button from stealing keyboard focus
 190                 _topPanel.add(_scaleCheckBox);
 191                 // Add checkbox button for enabling maps or not
 192                 _mapCheckBox = new JCheckBox(IconManager.getImageIcon(IconManager.MAP_BUTTON), false);
 193                 _mapCheckBox.setSelectedIcon(IconManager.getImageIcon(IconManager.MAP_BUTTON_ON));
 194                 _mapCheckBox.setOpaque(false);
 195                 _mapCheckBox.setToolTipText(I18nManager.getText("menu.map.showmap"));
 196                 _mapCheckBox.addItemListener(mapCheckListener);
 197                 _mapCheckBox.setFocusable(false); // stop button from stealing keyboard focus
 198                 _topPanel.add(_mapCheckBox);
 199                 // Add checkbox button for enabling autopan or not
 200                 _autopanCheckBox = new JCheckBox(IconManager.getImageIcon(IconManager.AUTOPAN_BUTTON), true);
 201                 _autopanCheckBox.setSelectedIcon(IconManager.getImageIcon(IconManager.AUTOPAN_BUTTON_ON));
 202                 _autopanCheckBox.setOpaque(false);
 203                 _autopanCheckBox.setToolTipText(I18nManager.getText("menu.map.autopan"));
 204                 _autopanCheckBox.addItemListener(itemListener);
 205                 _autopanCheckBox.setFocusable(false); // stop button from stealing keyboard focus
 206                 _topPanel.add(_autopanCheckBox);
 207                 // Add checkbox button for connecting points or not
 208                 _connectCheckBox = new MultiStateCheckBox(4);
 209                 _connectCheckBox.setIcon(0, IconManager.getImageIcon(IconManager.POINTS_WITH_ARROWS_BUTTON));
 210                 _connectCheckBox.setIcon(1, IconManager.getImageIcon(IconManager.POINTS_HIDDEN_BUTTON));
 211                 _connectCheckBox.setIcon(2, IconManager.getImageIcon(IconManager.POINTS_CONNECTED_BUTTON));
 212                 _connectCheckBox.setIcon(3, IconManager.getImageIcon(IconManager.POINTS_DISCONNECTED_BUTTON));
 213                 _connectCheckBox.setCurrentState(0);
 214                 _connectCheckBox.setOpaque(false);
 215                 _connectCheckBox.setToolTipText(I18nManager.getText("menu.map.connect"));
 216                 _connectCheckBox.addItemListener(itemListener);
 217                 _connectCheckBox.setFocusable(false); // stop button from stealing keyboard focus
 218                 _topPanel.add(_connectCheckBox);
 219
 220                 // Add checkbox button for edit mode or not
 221                 _editmodeCheckBox = new JCheckBox(IconManager.getImageIcon(IconManager.EDIT_MODE_BUTTON), false);
 222                 _editmodeCheckBox.setSelectedIcon(IconManager.getImageIcon(IconManager.EDIT_MODE_BUTTON_ON));
 223                 _editmodeCheckBox.setOpaque(false);
 224                 _editmodeCheckBox.setToolTipText(I18nManager.getText("menu.map.editmode"));
 225                 _editmodeCheckBox.addItemListener(itemListener);
 226                 _editmodeCheckBox.setFocusable(false); // stop button from stealing keyboard focus
 227                 _topPanel.add(_editmodeCheckBox);
 228
 229                 // Add zoom in, zoom out buttons
 230                 _sidePanel = new OverlayPanel();
 231                 _sidePanel.setLayout(new BoxLayout(_sidePanel, BoxLayout.Y_AXIS));
 232                 JButton zoomInButton = new JButton(IconManager.getImageIcon(IconManager.ZOOM_IN_BUTTON));
 233                 zoomInButton.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
 234                 zoomInButton.setContentAreaFilled(false);
 235                 zoomInButton.setToolTipText(I18nManager.getText("menu.map.zoomin"));
 236                 zoomInButton.addActionListener(new ActionListener() {
 237                         public void actionPerformed(ActionEvent e)
 238                         {
 239                                 zoomIn();
 240                         }
 241                 });
 242                 zoomInButton.setFocusable(false); // stop button from stealing keyboard focus
 243                 _sidePanel.add(zoomInButton);
 244                 JButton zoomOutButton = new JButton(IconManager.getImageIcon(IconManager.ZOOM_OUT_BUTTON));
 245                 zoomOutButton.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
 246                 zoomOutButton.setContentAreaFilled(false);
 247                 zoomOutButton.setToolTipText(I18nManager.getText("menu.map.zoomout"));
 248                 zoomOutButton.addActionListener(new ActionListener() {
 249                         public void actionPerformed(ActionEvent e)
 250                         {
 251                                 zoomOut();
 252                         }
 253                 });
 254                 zoomOutButton.setFocusable(false); // stop button from stealing keyboard focus
 255                 _sidePanel.add(zoomOutButton);
 256
 257                 // Bottom panel for scale bar
 258                 _scaleBar = new ScaleBar();
 259
 260                 // add control panels to this one
 261                 setLayout(new BorderLayout());
 262                 _topPanel.setVisible(false);
 263                 _sidePanel.setVisible(false);
 264                 add(_topPanel, BorderLayout.NORTH);
 265                 add(_sidePanel, BorderLayout.WEST);
 266                 add(_scaleBar, BorderLayout.SOUTH);
 267                 // Make popup menu
 268                 makePopup();
 269                 // Get currently selected map from Config, pass to MapTileManager
 270                 _tileManager.setMapSource(Config.getConfigInt(Config.KEY_MAPSOURCE_INDEX));
 271                 // Update display settings
 272                 dataUpdated(MAPSERVER_CHANGED);
 273         }
 274
 275
 276         /**
 277          * Make the popup menu for right-clicking the map
 278          */
 279         private void makePopup()
 280         {
 281                 _popup = new JPopupMenu();
 282                 JMenuItem zoomInItem = new JMenuItem(I18nManager.getText("menu.map.zoomin"));
 283                 zoomInItem.addActionListener(new ActionListener() {
 284                         public void actionPerformed(ActionEvent e)
 285                         {
 286                                 panMap((_popupMenuX - getWidth()/2)/2, (_popupMenuY - getHeight()/2)/2);
 287                                 zoomIn();
 288                         }});
 289                 _popup.add(zoomInItem);
 290                 JMenuItem zoomOutItem = new JMenuItem(I18nManager.getText("menu.map.zoomout"));
 291                 zoomOutItem.addActionListener(new ActionListener() {
 292                         public void actionPerformed(ActionEvent e)
 293                         {
 294                                 panMap(-(_popupMenuX - getWidth()/2), -(_popupMenuY - getHeight()/2));
 295                                 zoomOut();
 296                         }});
 297                 _popup.add(zoomOutItem);
 298                 JMenuItem zoomFullItem = new JMenuItem(I18nManager.getText("menu.map.zoomfull"));
 299                 zoomFullItem.addActionListener(new ActionListener() {
 300                         public void actionPerformed(ActionEvent e)
 301                         {
 302                                 zoomToFit();
 303                                 _recalculate = true;
 304                                 repaint();
 305                         }});
 306                 _popup.add(zoomFullItem);
 307                 _popup.addSeparator();
 308                 // Set background
 309                 JMenuItem setMapBgItem = new JMenuItem(
 310                         I18nManager.getText(FunctionLibrary.FUNCTION_SET_MAP_BG.getNameKey()));
 311                 setMapBgItem.addActionListener(new ActionListener() {
 312                         public void actionPerformed(ActionEvent e)
 313                         {
 314                                 FunctionLibrary.FUNCTION_SET_MAP_BG.begin();
 315                         }});
 316                 _popup.add(setMapBgItem);
 317                 // new point option
 318                 JMenuItem newPointItem = new JMenuItem(I18nManager.getText("menu.map.newpoint"));
 319                 newPointItem.addActionListener(new ActionListener() {
 320                         public void actionPerformed(ActionEvent e)
 321                         {
 322                                 _app.createPoint(createPointFromClick(_popupMenuX, _popupMenuY));
 323                         }});
 324                 _popup.add(newPointItem);
 325                 // draw point series
 326                 JMenuItem drawPointsItem = new JMenuItem(I18nManager.getText("menu.map.drawpoints"));
 327                 drawPointsItem.addActionListener(new ActionListener() {
 328                         public void actionPerformed(ActionEvent e)
 329                         {
 330                                 _drawMode = MODE_DRAW_POINTS_START;
 331                         }
 332                 });
 333                 _popup.add(drawPointsItem);
 334         }
 335
 336
 337         /**
 338          * Zoom to fit the current data area
 339          */
 340         private void zoomToFit()
 341         {
 342                 _latRange = _track.getLatRange();
 343                 _lonRange = _track.getLonRange();
 344                 _xRange = new DoubleRange(MapUtils.getXFromLongitude(_lonRange.getMinimum()),
 345                         MapUtils.getXFromLongitude(_lonRange.getMaximum()));
 346                 _yRange = new DoubleRange(MapUtils.getYFromLatitude(_latRange.getMinimum()),
 347                         MapUtils.getYFromLatitude(_latRange.getMaximum()));
 348                 _mapPosition.zoomToXY(_xRange.getMinimum(), _xRange.getMaximum(), _yRange.getMinimum(), _yRange.getMaximum(),
 349                         getWidth(), getHeight());
 350         }
 351
 352
 353         /**
 354          * Paint method
 355          * @see java.awt.Canvas#paint(java.awt.Graphics)
 356          */
 357         public void paint(Graphics inG)
 358         {
 359                 super.paint(inG);
 360                 if (_mapImage != null && (_mapImage.getWidth() != getWidth() || _mapImage.getHeight() != getHeight())) {
 361                         _mapImage = null;
 362                 }
 363                 if (_track.getNumPoints() > 0)
 364                 {
 365                         // Check for autopan if enabled / necessary
 366                         if (_autopanCheckBox.isSelected())
 367                         {
 368                                 int selectedPoint = _selection.getCurrentPointIndex();
 369                                 if (selectedPoint >= 0 && _dragFromX == -1 && selectedPoint != _prevSelectedPoint)
 370                                 {
 371                                         autopanToPoint(selectedPoint);
 372                                 }
 373                                 _prevSelectedPoint = selectedPoint;
 374                         }
 375
 376                         // Draw the map contents if necessary
 377                         if (_mapImage == null || _recalculate)
 378                         {
 379                                 paintMapContents();
 380                                 _scaleBar.updateScale(_mapPosition.getZoom(), _mapPosition.getYFromPixels(0, 0));
 381                         }
 382                         // Draw the prepared image onto the panel
 383                         if (_mapImage != null) {
 384                                 inG.drawImage(_mapImage, 0, 0, getWidth(), getHeight(), null);
 385                         }
 386
 387                         switch (_drawMode)
 388                         {
 389                                 case MODE_DRAG_POINT:
 390                                         drawDragLines(inG, _selection.getCurrentPointIndex()-1, _selection.getCurrentPointIndex()+1);
 391                                         break;
 392
 393                                 case MODE_CREATE_MIDPOINT:
 394                                         drawDragLines(inG, _clickedPoint-1, _clickedPoint);
 395                                         break;
 396
 397                                 case MODE_ZOOM_RECT:
 398                                 case MODE_MARK_RECTANGLE:
 399                                         if (_dragFromX != -1 && _dragFromY != -1)
 400                                         {
 401                                                 // Draw the zoom rectangle if necessary
 402                                                 inG.setColor(Color.RED);
 403                                                 inG.drawLine(_dragFromX, _dragFromY, _dragFromX, _dragToY);
 404                                                 inG.drawLine(_dragFromX, _dragFromY, _dragToX, _dragFromY);
 405                                                 inG.drawLine(_dragToX, _dragFromY, _dragToX, _dragToY);
 406                                                 inG.drawLine(_dragFromX, _dragToY, _dragToX, _dragToY);
 407                                         }
 408                                         break;
 409
 410                                 case MODE_DRAW_POINTS_CONT:
 411                                         // draw line to mouse position to show drawing mode
 412                                         inG.setColor(Config.getColourScheme().getColour(ColourScheme.IDX_POINT));
 413                                         int prevIndex = _track.getNumPoints()-1;
 414                                         int px = getWidth() / 2 + _mapPosition.getXFromCentre(_track.getX(prevIndex));
 415                                         int py = getHeight() / 2 + _mapPosition.getYFromCentre(_track.getY(prevIndex));
 416                                         inG.drawLine(px, py, _dragToX, _dragToY);
 417                                         break;
 418                         }
 419                 }
 420                 else
 421                 {
 422                         inG.setColor(Config.getColourScheme().getColour(ColourScheme.IDX_BACKGROUND));
 423                         inG.fillRect(0, 0, getWidth(), getHeight());
 424                         inG.setColor(COLOR_MESSAGES);
 425                         inG.drawString(I18nManager.getText("display.nodata"), 50, getHeight()/2);
 426                         _scaleBar.updateScale(-1, 0);
 427                 }
 428                 // Draw slider etc on top
 429                 paintChildren(inG);
 430         }
 431
 432         /**
 433          * @return true if the currently selected point is visible, false if off-screen or nothing selected
 434          */
 435         private boolean isCurrentPointVisible()
 436         {
 437                 if (_trackInfo.getCurrentPoint() == null) {return false;}
 438                 final int selectedPoint = _selection.getCurrentPointIndex();
 439                 final int xFromCentre = Math.abs(_mapPosition.getXFromCentre(_track.getX(selectedPoint)));
 440                 if (xFromCentre > (getWidth()/2)) {return false;}
 441                 final int yFromCentre = Math.abs(_mapPosition.getYFromCentre(_track.getY(selectedPoint)));
 442                 return yFromCentre < (getHeight()/2);
 443         }
 444
 445         /**
 446          * If the specified point isn't visible, pan to it
 447          * @param inIndex index of selected point
 448          */
 449         private void autopanToPoint(int inIndex)
 450         {
 451                 int px = getWidth() / 2 + _mapPosition.getXFromCentre(_track.getX(inIndex));
 452                 int py = getHeight() / 2 + _mapPosition.getYFromCentre(_track.getY(inIndex));
 453                 int panX = 0;
 454                 int panY = 0;
 455                 if (px < PAN_DISTANCE) {
 456                         panX = px - AUTOPAN_DISTANCE;
 457                 }
 458                 else if (px > (getWidth()-PAN_DISTANCE)) {
 459                         panX = AUTOPAN_DISTANCE + px - getWidth();
 460                 }
 461                 if (py < (2*PAN_DISTANCE)) {
 462                         panY = py - AUTOPAN_DISTANCE;
 463                 }
 464                 if (py > (getHeight()-PAN_DISTANCE)) {
 465                         panY = AUTOPAN_DISTANCE + py - getHeight();
 466                 }
 467                 if (panX != 0 || panY != 0) {
 468                         _mapPosition.pan(panX, panY);
 469                 }
 470         }
 471
 472         /**
 473          * Paint the map tiles and the points on to the _mapImage
 474          */
 475         private void paintMapContents()
 476         {
 477                 if (_mapImage == null || _mapImage.getWidth() != getWidth() || _mapImage.getHeight() != getHeight())
 478                 {
 479                         _mapImage = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_INT_RGB);
 480                 }
 481
 482                 Graphics g = _mapImage.getGraphics();
 483                 // Set antialiasing according to config
 484                 ((Graphics2D) g).setRenderingHint(RenderingHints.KEY_ANTIALIASING,
 485                         Config.getConfigBoolean(Config.KEY_ANTIALIAS) ? RenderingHints.VALUE_ANTIALIAS_ON : RenderingHints.VALUE_ANTIALIAS_OFF);
 486                 // Clear to background
 487                 g.setColor(Config.getColourScheme().getColour(ColourScheme.IDX_BACKGROUND));
 488                 g.fillRect(0, 0, getWidth(), getHeight());
 489
 490                 // Check whether maps are on or not
 491                 final boolean showMap = Config.getConfigBoolean(Config.KEY_SHOW_MAP);
 492                 _mapCheckBox.setSelected(showMap);
 493                 // Check whether disk cache is on or not
 494                 final boolean usingDiskCache = Config.getConfigString(Config.KEY_DISK_CACHE) != null;
 495                 // Show tip to recommend setting up a cache
 496                 if (showMap && !usingDiskCache && Config.getConfigBoolean(Config.KEY_ONLINE_MODE))
 497                 {
 498                         SwingUtilities.invokeLater(new Runnable() {
 499                                 public void run() {
 500                                         _app.showTip(TipManager.Tip_UseAMapCache);
 501                                 }
 502                         });
 503                 }
 504
 505                 // reset error message
 506                 if (!showMap) {_shownOsmErrorAlready = false;}
 507                 _recalculate = false;
 508                 // Only get map tiles if selected
 509                 if (showMap)
 510                 {
 511                         // init tile cacher
 512                         _tileManager.centreMap(_mapPosition.getZoom(), _mapPosition.getCentreTileX(), _mapPosition.getCentreTileY());
 513
 514                         boolean loadingFailed = false;
 515                         if (_mapImage == null) return;
 516
 517                         if (_tileManager.isOverzoomed())
 518                         {
 519                                 // display overzoom message
 520                                 g.setColor(COLOR_MESSAGES);
 521                                 g.drawString(I18nManager.getText("map.overzoom"), 50, getHeight()/2);
 522                         }
 523                         else
 524                         {
 525                                 int numLayers = _tileManager.getNumLayers();
 526                                 // Loop over tiles drawing each one
 527                                 int[] tileIndices = _mapPosition.getTileIndices(getWidth(), getHeight());
 528                                 int[] pixelOffsets = _mapPosition.getDisplayOffsets(getWidth(), getHeight());
 529                                 for (int tileX = tileIndices[0]; tileX <= tileIndices[1] && !loadingFailed; tileX++)
 530                                 {
 531                                         int x = (tileX - tileIndices[0]) * 256 - pixelOffsets[0];
 532                                         for (int tileY = tileIndices[2]; tileY <= tileIndices[3]; tileY++)
 533                                         {
 534                                                 int y = (tileY - tileIndices[2]) * 256 - pixelOffsets[1];
 535                                                 // Loop over layers
 536                                                 for (int l=0; l<numLayers; l++)
 537                                                 {
 538                                                         Image image = _tileManager.getTile(l, tileX, tileY, true);
 539                                                         if (image != null) {
 540                                                                 g.drawImage(image, x, y, 256, 256, null);
 541                                                         }
 542                                                 }
 543                                         }
 544                                 }
 545
 546                                 // Make maps brighter / fainter according to slider
 547                                 final int brightnessIndex = Math.max(1, _transparencySlider.getValue()) - 1;
 548                                 if (brightnessIndex > 0)
 549                                 {
 550                                         final int[] alphas = {0, 40, 80, 120, 160, 210};
 551                                         Color bgColor = Config.getColourScheme().getColour(ColourScheme.IDX_BACKGROUND);
 552                                         bgColor = new Color(bgColor.getRed(), bgColor.getGreen(), bgColor.getBlue(), alphas[brightnessIndex]);
 553                                         g.setColor(bgColor);
 554                                         g.fillRect(0, 0, getWidth(), getHeight());
 555                                 }
 556                         }
 557                 }
 558
 559                 // Work out track opacity according to slider
 560                 final float[] opacities = {1.0f, 0.75f, 0.5f, 0.3f, 0.15f, 0.0f};
 561                 float trackOpacity = 1.0f;
 562                 if (_transparencySlider.getValue() < 0) {
 563                         trackOpacity = opacities[-1 - _transparencySlider.getValue()];
 564                 }
 565
 566                 if (trackOpacity > 0.0f)
 567                 {
 568                         // Paint the track points on top
 569                         boolean pointsPainted = true;
 570                         try
 571                         {
 572                                 if (trackOpacity > 0.9f)
 573                                 {
 574                                         // Track is fully opaque, just draw it directly
 575                                         pointsPainted = paintPoints(g);
 576                                         _trackImage = null;
 577                                 }
 578                                 else
 579                                 {
 580                                         // Track is partly transparent, so use a separate BufferedImage
 581                                         if (_trackImage == null || _trackImage.getWidth() != getWidth() || _trackImage.getHeight() != getHeight())
 582                                         {
 583                                                 _trackImage = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_INT_ARGB);
 584                                         }
 585                                         // Clear to transparent
 586                                         Graphics2D gTrack = _trackImage.createGraphics();
 587                                         gTrack.setComposite(AlphaComposite.getInstance(AlphaComposite.CLEAR, 0.0f));
 588                                         gTrack.fillRect(0, 0, getWidth(), getHeight());
 589                                         gTrack.setPaintMode();
 590                                         // Draw the track onto this separate image
 591                                         pointsPainted = paintPoints(gTrack);
 592                                         ((Graphics2D) g).setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, trackOpacity));
 593                                         g.drawImage(_trackImage, 0, 0, null);
 594                                 }
 595                         }
 596                         catch (NullPointerException npe) {} // ignore, probably due to data being changed during drawing
 597                         catch (ArrayIndexOutOfBoundsException obe) {} // also ignore
 598
 599                         // Zoom to fit if no points found
 600                         if (!pointsPainted && _checkBounds)
 601                         {
 602                                 zoomToFit();
 603                                 _recalculate = true;
 604                                 repaint();
 605                         }
 606                 }
 607
 608                 // free g
 609                 g.dispose();
 610
 611                 _checkBounds = false;
 612                 // enable / disable transparency slider
 613                 _transparencySlider.setEnabled(showMap);
 614         }
 615
 616
 617         /**
 618          * Paint the points using the given graphics object
 619          * @param inG Graphics object to use for painting
 620          * @return true if any points or lines painted
 621          */
 622         private boolean paintPoints(Graphics inG)
 623         {
 624                 // Set up colours
 625                 final ColourScheme cs = Config.getColourScheme();
 626                 final Color pointColour  = cs.getColour(ColourScheme.IDX_POINT);
 627                 final Color rangeColour  = cs.getColour(ColourScheme.IDX_SELECTION);
 628                 final Color currentColour = cs.getColour(ColourScheme.IDX_PRIMARY);
 629                 final Color secondColour = cs.getColour(ColourScheme.IDX_SECONDARY);
 630                 final Color textColour   = cs.getColour(ColourScheme.IDX_TEXT);
 631                 final PointColourer pointColourer = _app.getPointColourer();
 632
 633                 final int winWidth  = getWidth();
 634                 final int winHeight = getHeight();
 635                 final int halfWinWidth  = winWidth / 2;
 636                 final int halfWinHeight = winHeight / 2;
 637
 638                 final int numPoints = _track.getNumPoints();
 639                 final int[] xPixels = new int[numPoints];
 640                 final int[] yPixels = new int[numPoints];
 641
 642                 final int pointSeparationForArrowsSqd = 350;
 643                 final int pointSeparation1dForArrows = (int) (Math.sqrt(pointSeparationForArrowsSqd) * 0.7);
 644
 645                 // try to set line width for painting
 646                 if (inG instanceof Graphics2D)
 647                 {
 648                         int lineWidth = Config.getConfigInt(Config.KEY_LINE_WIDTH);
 649                         if (lineWidth < 1 || lineWidth > 4) {lineWidth = 2;}
 650                         ((Graphics2D) inG).setStroke(new BasicStroke(lineWidth));
 651                 }
 652
 653                 boolean pointsPainted = false;
 654                 // draw track points
 655                 inG.setColor(pointColour);
 656                 int prevX = -1, prevY = -1;
 657                 final int connectState = _connectCheckBox.getCurrentState();
 658                 final boolean drawLines = (connectState != 3);  // 0, 1 or 2
 659                 final boolean drawPoints = (connectState != 1); // 0, 2 or 3
 660                 final boolean drawArrows = (connectState == 0); // 0
 661
 662                 boolean prevPointVisible = false, currPointVisible = false;
 663                 boolean anyWaypoints = false;
 664                 boolean isWaypoint = false;
 665                 boolean drawnLastArrow = false; // avoid painting arrows on adjacent lines, looks too busy
 666                 for (int i=0; i<numPoints; i++)
 667                 {
 668                         // Calculate pixel position of point from its x, y coordinates
 669                         int px = halfWinWidth  + _mapPosition.getXFromCentre(_track.getX(i));
 670                         int py = halfWinHeight + _mapPosition.getYFromCentre(_track.getY(i));
 671                         px = wrapLongitudeValue(px, winWidth, _mapPosition.getZoom());
 672                         // Remember these calculated pixel values so they don't have to be recalculated
 673                         xPixels[i] = px; yPixels[i] = py;
 674
 675                         currPointVisible = px >= 0 && px < winWidth && py >= 0 && py < winHeight;
 676                         isWaypoint = _track.getPoint(i).isWaypoint();
 677                         anyWaypoints = anyWaypoints || isWaypoint;
 678                         if (!isWaypoint)
 679                         {
 680                                 if (currPointVisible || (drawLines && prevPointVisible))
 681                                 {
 682                                         // For track points, work out which colour to use
 683                                         if (_track.getPoint(i).getDeleteFlag()) {
 684                                                 inG.setColor(currentColour);
 685                                         }
 686                                         else if (pointColourer != null)
 687                                         {  // use the point colourer if there is one
 688                                                 Color trackColour = pointColourer.getColour(i);
 689                                                 inG.setColor(trackColour);
 690                                         }
 691                                         else
 692                                         {
 693                                                 inG.setColor(pointColour);
 694                                         }
 695
 696                                         // Draw rectangle for track point if it's visible
 697                                         if (currPointVisible)
 698                                         {
 699                                                 if (drawPoints) {
 700                                                         inG.drawRect(px-2, py-2, 3, 3);
 701                                                 }
 702                                                 pointsPainted = true;
 703                                         }
 704                                 }
 705
 706                                 // Connect track points if either of them are visible
 707                                 if (drawLines
 708                                  && (currPointVisible || prevPointVisible)
 709                                  && !(prevX == -1 && prevY == -1)
 710                                  && !_track.getPoint(i).getSegmentStart())
 711                                 {
 712                                         inG.drawLine(prevX, prevY, px, py);
 713                                         pointsPainted = true;
 714
 715                                         // Now consider whether we need to draw an arrow as well
 716                                         if (drawArrows
 717                                          && !drawnLastArrow
 718                                          && (Math.abs(prevX-px) > pointSeparation1dForArrows || Math.abs(prevY-py) > pointSeparation1dForArrows))
 719                                         {
 720                                                 final double pointSeparationSqd = (prevX-px) * (prevX-px) + (prevY-py) * (prevY-py);
 721                                                 if (pointSeparationSqd > pointSeparationForArrowsSqd)
 722                                                 {
 723                                                         final double midX = (prevX + px) / 2.0;
 724                                                         final double midY = (prevY + py) / 2.0;
 725                                                         final boolean midPointVisible = midX >= 0 && midX < winWidth && midY >= 0 && midY < winHeight;
 726                                                         if (midPointVisible)
 727                                                         {
 728                                                                 final double alpha = Math.atan2(py - prevY, px - prevX);
 729                                                                 //System.out.println("Draw arrow from (" + prevX + "," + prevY + ") to (" + px + "," + py
 730                                                                 //      + ") with angle" + (int) (alpha * 180/Math.PI));
 731                                                                 final double MID_TO_VERTEX = 3.0;
 732                                                                 final double arrowX = MID_TO_VERTEX * Math.cos(alpha);
 733                                                                 final double arrowY = MID_TO_VERTEX * Math.sin(alpha);
 734                                                                 final double vertexX = midX + arrowX;
 735                                                                 final double vertexY = midY + arrowY;
 736                                                                 inG.drawLine((int)(midX-arrowX-2*arrowY), (int)(midY-arrowY+2*arrowX), (int)vertexX, (int)vertexY);
 737                                                                 inG.drawLine((int)(midX-arrowX+2*arrowY), (int)(midY-arrowY-2*arrowX), (int)vertexX, (int)vertexY);
 738                                                         }
 739                                                         drawnLastArrow = midPointVisible;
 740                                                 }
 741                                         }
 742                                         else
 743                                         {
 744                                                 drawnLastArrow = false;
 745                                         }
 746                                 }
 747                                 prevX = px; prevY = py;
 748                         }
 749                         prevPointVisible = currPointVisible;
 750                 }
 751
 752                 // Loop over points, just drawing blobs for waypoints
 753                 inG.setColor(textColour);
 754                 FontMetrics fm = inG.getFontMetrics();
 755                 int nameHeight = fm.getHeight();
 756                 if (anyWaypoints)
 757                 {
 758                         int numWaypoints = 0;
 759                         for (int i=0; i<_track.getNumPoints(); i++)
 760                         {
 761                                 if (_track.getPoint(i).isWaypoint())
 762                                 {
 763                                         int px = xPixels[i];
 764                                         int py = yPixels[i];
 765                                         if (px >= 0 && px < winWidth && py >= 0 && py < winHeight)
 766                                         {
 767                                                 if (_waypointIconDefinition == null)
 768                                                 {
 769                                                         inG.fillRect(px-3, py-3, 6, 6);
 770                                                 }
 771                                                 else
 772                                                 {
 773                                                         ImageIcon icon = _waypointIconDefinition.getImageIcon();
 774                                                         if (icon != null)
 775                                                         {
 776                                                                 inG.drawImage(icon.getImage(), px-_waypointIconDefinition.getXOffset(),
 777                                                                         py-_waypointIconDefinition.getYOffset(), null);
 778                                                         }
 779                                                 }
 780                                                 pointsPainted = true;
 781                                                 numWaypoints++;
 782                                         }
 783                                 }
 784                         }
 785                         // Take more care with waypoint names if less than 100 are visible
 786                         final int numNameSteps = (numWaypoints > 100 ? 1 : 4);
 787                         final int numPointSteps = (numWaypoints > 1000 ? 2 : 1);
 788
 789                         // Loop over points again, now draw names for waypoints
 790                         int[] nameXs = {0, 0, 0, 0};
 791                         int[] nameYs = {0, 0, 0, 0};
 792                         for (int i=0; i<_track.getNumPoints(); i += numPointSteps)
 793                         {
 794                                 if (_track.getPoint(i).isWaypoint())
 795                                 {
 796                                         int px = xPixels[i];
 797                                         int py = yPixels[i];
 798                                         if (px >= 0 && px < winWidth && py >= 0 && py < winHeight)
 799                                         {
 800                                                 // Figure out where to draw waypoint name so it doesn't obscure track
 801                                                 String waypointName = _track.getPoint(i).getWaypointName();
 802                                                 int nameWidth = fm.stringWidth(waypointName);
 803                                                 boolean drawnName = false;
 804                                                 // Make arrays for coordinates right left up down
 805                                                 nameXs[0] = px + 2; nameXs[1] = px - nameWidth - 2;
 806                                                 nameXs[2] = nameXs[3] = px - nameWidth/2;
 807                                                 nameYs[0] = nameYs[1] = py + (nameHeight/2);
 808                                                 nameYs[2] = py - 2; nameYs[3] = py + nameHeight + 2;
 809                                                 for (int extraSpace = 0; extraSpace < numNameSteps && !drawnName; extraSpace++)
 810                                                 {
 811                                                         // Shift arrays for coordinates right left up down
 812                                                         nameXs[0] += 3; nameXs[1] -= 3;
 813                                                         nameYs[2] -= 3; nameYs[3] += 3;
 814                                                         // Check each direction in turn right left up down
 815                                                         for (int a=0; a<4; a++)
 816                                                         {
 817                                                                 if (nameXs[a] > 0 && (nameXs[a] + nameWidth) < winWidth
 818                                                                         && nameYs[a] < winHeight && (nameYs[a] - nameHeight) > 0
 819                                                                         && !MapUtils.overlapsPoints(_mapImage, nameXs[a], nameYs[a], nameWidth, nameHeight, textColour))
 820                                                                 {
 821                                                                         // Found a rectangle to fit - draw name here and quit
 822                                                                         inG.drawString(waypointName, nameXs[a], nameYs[a]);
 823                                                                         drawnName = true;
 824                                                                         break;
 825                                                                 }
 826                                                         }
 827                                                 }
 828                                         }
 829                                 }
 830                         }
 831                 }
 832                 // Loop over points, drawing blobs for photo / audio points
 833                 inG.setColor(secondColour);
 834                 for (int i=0; i<_track.getNumPoints(); i++)
 835                 {
 836                         if (_track.getPoint(i).hasMedia())
 837                         {
 838                                 int px = xPixels[i];
 839                                 int py = yPixels[i];
 840                                 if (px >= 0 && px < winWidth && py >= 0 && py < winHeight)
 841                                 {
 842                                         inG.drawRect(px-1, py-1, 2, 2);
 843                                         inG.drawRect(px-2, py-2, 4, 4);
 844                                         pointsPainted = true;
 845                                 }
 846                         }
 847                 }
 848
 849                 // Draw selected range
 850                 if (_selection.hasRangeSelected())
 851                 {
 852                         inG.setColor(rangeColour);
 853                         for (int i=_selection.getStart(); i<=_selection.getEnd(); i++)
 854                         {
 855                                 int px = xPixels[i];
 856                                 int py = yPixels[i];
 857                                 inG.drawRect(px-1, py-1, 2, 2);
 858                         }
 859                 }
 860
 861                 // Draw crosshairs at selected point
 862                 int selectedPoint = _selection.getCurrentPointIndex();
 863                 if (selectedPoint >= 0)
 864                 {
 865                         int px = xPixels[selectedPoint];
 866                         int py = yPixels[selectedPoint];
 867                         inG.setColor(currentColour);
 868                         // crosshairs
 869                         inG.drawLine(px, 0, px, winHeight);
 870                         inG.drawLine(0, py, winWidth, py);
 871                 }
 872                 // Return the number of points painted
 873                 return pointsPainted;
 874         }
 875
 876         /**
 877          * Wrap the given pixel value if appropriate and possible
 878          * @param inPx Pixel x coordinate
 879          * @param inWinWidth window width in pixels
 880          * @param inZoom zoom level
 881          * @return modified pixel x coordinate
 882          */
 883         private static int wrapLongitudeValue(int inPx, int inWinWidth, int inZoom)
 884         {
 885                 if (inPx > inWinWidth)
 886                 {
 887                         // Pixel is too far right, could we wrap it back onto the screen?
 888                         int px = inPx;
 889                         while (px > inWinWidth) {
 890                                 px -= (256 << inZoom);
 891                         }
 892                         if (px >= 0) {
 893                                 return px; // successfully wrapped back onto the screen
 894                         }
 895                 }
 896                 else if (inPx < 0)
 897                 {
 898                         // Pixel is too far left, could we wrap it back onto the screen?
 899                         int px = inPx;
 900                         while (px < 0) {
 901                                 px += (256 << inZoom);
 902                         }
 903                         if (px < inWinWidth) {
 904                                 return px; // successfully wrapped back onto the screen
 905                         }
 906                 }
 907                 // Either it's already on the screen or couldn't be wrapped
 908                 return inPx;
 909         }
 910
 911         /**
 912          * Draw the lines while dragging a point
 913          * @param inG graphics object
 914          * @param inPrevIndex index of point to draw from
 915          * @param inNextIndex index of point to draw to
 916          */
 917         private void drawDragLines(Graphics inG, int inPrevIndex, int inNextIndex)
 918         {
 919                 inG.setColor(Config.getColourScheme().getColour(ColourScheme.IDX_POINT));
 920                 // line from prev point to cursor
 921                 if (inPrevIndex > -1 && !_track.getPoint(inPrevIndex+1).getSegmentStart())
 922                 {
 923                         final int px = getWidth() / 2 + _mapPosition.getXFromCentre(_track.getX(inPrevIndex));
 924                         final int py = getHeight() / 2 + _mapPosition.getYFromCentre(_track.getY(inPrevIndex));
 925                         inG.drawLine(px, py, _dragToX, _dragToY);
 926                 }
 927                 if (inNextIndex < _track.getNumPoints() && !_track.getPoint(inNextIndex).getSegmentStart())
 928                 {
 929                         final int px = getWidth() / 2 + _mapPosition.getXFromCentre(_track.getX(inNextIndex));
 930                         final int py = getHeight() / 2 + _mapPosition.getYFromCentre(_track.getY(inNextIndex));
 931                         inG.drawLine(px, py, _dragToX, _dragToY);
 932                 }
 933         }
 934
 935         /**
 936          * Inform that tiles have been updated and the map can be repainted
 937          * @param inIsOk true if data loaded ok, false for error
 938          */
 939         public void tilesUpdated(boolean inIsOk)
 940         {
 941                 synchronized(this)
 942                 {
 943                         // Show message if loading failed (but not too many times)
 944                         if (!inIsOk && !_shownOsmErrorAlready && _mapCheckBox.isSelected())
 945                         {
 946                                 _shownOsmErrorAlready = true;
 947                                 // use separate thread to show message about failing to load osm images
 948                                 new Thread(new Runnable() {
 949                                         public void run() {
 950                                                 try {Thread.sleep(500);} catch (InterruptedException ie) {}
 951                                                 _app.showErrorMessage("error.osmimage.dialogtitle", "error.osmimage.failed");
 952                                         }
 953                                 }).start();
 954                         }
 955                         _recalculate = true;
 956                         repaint();
 957                 }
 958         }
 959
 960         /**
 961          * Zoom out, if not already at minimum zoom
 962          */
 963         public void zoomOut()
 964         {
 965                 _mapPosition.zoomOut();
 966                 _recalculate = true;
 967                 repaint();
 968         }
 969
 970         /**
 971          * Zoom in, if not already at maximum zoom
 972          */
 973         public void zoomIn()
 974         {
 975                 // See if selected point is currently visible, if so (and autopan on) then autopan after zoom to keep it visible
 976                 boolean wasVisible = _autopanCheckBox.isSelected() && isCurrentPointVisible();
 977                 _mapPosition.zoomIn();
 978                 if (wasVisible && !isCurrentPointVisible()) {
 979                         autopanToPoint(_selection.getCurrentPointIndex());
 980                 }
 981                 _recalculate = true;
 982                 repaint();
 983         }
 984
 985         /**
 986          * Pan map
 987          * @param inDeltaX x shift
 988          * @param inDeltaY y shift
 989          */
 990         public void panMap(int inDeltaX, int inDeltaY)
 991         {
 992                 _mapPosition.pan(inDeltaX, inDeltaY);
 993                 _recalculate = true;
 994                 repaint();
 995         }
 996
 997         /**
 998          * Create a DataPoint object from the given click coordinates
 999          * @param inX x coordinate of click
1000          * @param inY y coordinate of click
1001          * @return DataPoint with given coordinates and no altitude
1002          */
1003         private DataPoint createPointFromClick(int inX, int inY)
1004         {
1005                 double lat = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(inY, getHeight()));
1006                 double lon = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(inX, getWidth()));
1007                 return new DataPoint(new Latitude(lat, Coordinate.FORMAT_NONE),
1008                         new Longitude(lon, Coordinate.FORMAT_NONE), null);
1009         }
1010
1011         /**
1012          * Move a DataPoint object to the given mouse coordinates
1013          * @param startX start x coordinate of mouse
1014          * @param startY start y coordinate of mouse
1015          * @param endX end x coordinate of mouse
1016          * @param endY end y coordinate of mouse
1017          */
1018         private void movePointToMouse(int startX, int startY, int endX, int endY )
1019         {
1020                 double lat1 = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(startY, getHeight()));
1021                 double lon1 = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(startX, getWidth()));
1022                 double lat_delta = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(endY, getHeight())) - lat1;
1023                 double lon_delta = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(endX, getWidth())) - lon1;
1024
1025                 DataPoint point = _trackInfo.getCurrentPoint();
1026                 if (point == null) {
1027                         return;
1028                 }
1029
1030                 // Make lists for edit and undo, and add each changed field in turn
1031                 FieldEditList editList = new FieldEditList();
1032                 FieldEditList undoList = new FieldEditList();
1033
1034                 // Check field list
1035                 FieldList fieldList = _track.getFieldList();
1036                 int numFields = fieldList.getNumFields();
1037                 for (int i=0; i<numFields; i++)
1038                 {
1039                         Field field = fieldList.getField(i);
1040                         if (field == Field.LATITUDE) {
1041                                 editList.addEdit(new FieldEdit(field, Double.toString(point.getLatitude().getDouble() + lat_delta)));
1042                                 undoList.addEdit(new FieldEdit(field, point.getFieldValue(Field.LATITUDE)));
1043                         }
1044                         else if (field == Field.LONGITUDE) {
1045                                 editList.addEdit(new FieldEdit(field, Double.toString(point.getLongitude().getDouble() + lon_delta)));
1046                                 undoList.addEdit(new FieldEdit(field, point.getFieldValue(Field.LONGITUDE)));
1047                         }
1048                 }
1049                 _app.completePointEdit(editList, undoList);
1050         }
1051
1052
1053         /**
1054          * @see javax.swing.JComponent#getMinimumSize()
1055          */
1056         public Dimension getMinimumSize()
1057         {
1058                 final Dimension minSize = new Dimension(512, 300);
1059                 return minSize;
1060         }
1061
1062         /**
1063          * @see javax.swing.JComponent#getPreferredSize()
1064          */
1065         public Dimension getPreferredSize()
1066         {
1067                 return getMinimumSize();
1068         }
1069
1070
1071         /**
1072          * Respond to mouse click events
1073          * @see java.awt.event.MouseListener#mouseClicked(java.awt.event.MouseEvent)
1074          */
1075         public void mouseClicked(MouseEvent inE)
1076         {
1077                 if (_track != null && _track.getNumPoints() > 0)
1078                 {
1079                         // select point if it's a left-click
1080                         if (!inE.isMetaDown())
1081                         {
1082                                 if (inE.getClickCount() == 1)
1083                                 {
1084                                         // single click
1085                                         if (_drawMode == MODE_DEFAULT)
1086                                         {
1087                                                 int pointIndex = _clickedPoint;
1088                                                 if (pointIndex == INDEX_UNKNOWN)
1089                                                 {
1090                                                         // index hasn't been calculated yet
1091                                                         pointIndex = _track.getNearestPointIndex(
1092                                                          _mapPosition.getXFromPixels(inE.getX(), getWidth()),
1093                                                          _mapPosition.getYFromPixels(inE.getY(), getHeight()),
1094                                                          _mapPosition.getBoundsFromPixels(CLICK_SENSITIVITY), false);
1095                                                 }
1096                                                 // Extend selection for shift-click
1097                                                 if (inE.isShiftDown()) {
1098                                                         _trackInfo.extendSelection(pointIndex);
1099                                                 }
1100                                                 else {
1101                                                         _trackInfo.selectPoint(pointIndex);
1102                                                 }
1103                                         }
1104                                         else if (_drawMode == MODE_DRAW_POINTS_START)
1105                                         {
1106                                                 _app.createPoint(createPointFromClick(inE.getX(), inE.getY()));
1107                                                 _dragToX = inE.getX();
1108                                                 _dragToY = inE.getY();
1109                                                 _drawMode = MODE_DRAW_POINTS_CONT;
1110                                         }
1111                                         else if (_drawMode == MODE_DRAW_POINTS_CONT)
1112                                         {
1113                                                 DataPoint point = createPointFromClick(inE.getX(), inE.getY());
1114                                                 _app.createPoint(point, false); // not a new segment
1115                                         }
1116                                 }
1117                                 else if (inE.getClickCount() == 2)
1118                                 {
1119                                         // double click
1120                                         if (_drawMode == MODE_DEFAULT) {
1121                                                 panMap(inE.getX() - getWidth()/2, inE.getY() - getHeight()/2);
1122                                                 zoomIn();
1123                                         }
1124                                         else if (_drawMode == MODE_DRAW_POINTS_START || _drawMode == MODE_DRAW_POINTS_CONT) {
1125                                                 _drawMode = MODE_DEFAULT;
1126                                         }
1127                                 }
1128                         }
1129                         else
1130                         {
1131                                 // show the popup menu for right-clicks
1132                                 _popupMenuX = inE.getX();
1133                                 _popupMenuY = inE.getY();
1134                                 _popup.show(this, _popupMenuX, _popupMenuY);
1135                         }
1136                 }
1137                 // Reset app mode
1138                 _app.setCurrentMode(App.AppMode.NORMAL);
1139                 if (_drawMode == MODE_MARK_RECTANGLE) _drawMode = MODE_DEFAULT;
1140         }
1141
1142         /**
1143          * Ignore mouse enter events
1144          * @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)
1145          */
1146         public void mouseEntered(MouseEvent inE)
1147         {
1148                 // ignore
1149         }
1150
1151         /**
1152          * Ignore mouse exited events
1153          * @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)
1154          */
1155         public void mouseExited(MouseEvent inE)
1156         {
1157                 // ignore
1158         }
1159
1160         /**
1161          * React to mouse pressed events to initiate a point drag
1162          * @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent)
1163          */
1164         public void mousePressed(MouseEvent inE)
1165         {
1166                 _clickedPoint = INDEX_UNKNOWN;
1167                 if (_track == null || _track.getNumPoints() <= 0)
1168                         return;
1169                 if (!inE.isMetaDown())
1170                 {
1171                         // Left mouse drag - check if point is near; if so select it for dragging
1172                         if (_drawMode == MODE_DEFAULT)
1173                         {
1174                                 /* Drag points if edit mode is enabled OR ALT is pressed */
1175                                 if (_editmodeCheckBox.isSelected() || inE.isAltDown() || inE.isAltGraphDown())
1176                                 {
1177                                         final double clickX = _mapPosition.getXFromPixels(inE.getX(), getWidth());
1178                                         final double clickY = _mapPosition.getYFromPixels(inE.getY(), getHeight());
1179                                         final double clickSens = _mapPosition.getBoundsFromPixels(CLICK_SENSITIVITY);
1180                                         _clickedPoint = _track.getNearestPointIndex(clickX, clickY, clickSens, false);
1181
1182                                         if (_clickedPoint >= 0)
1183                                         {
1184                                                 // TODO: maybe use another color of the cross or remove the cross while dragging???
1185
1186                                                 _trackInfo.selectPoint(_clickedPoint);
1187                                                 if (_trackInfo.getCurrentPoint() != null)
1188                                                 {
1189                                                         _drawMode = MODE_DRAG_POINT;
1190                                                         _dragFromX = _dragToX = inE.getX();
1191                                                         _dragFromY = _dragToY = inE.getY();
1192                                                 }
1193                                         }
1194                                         else
1195                                         {
1196                                                 // Not a click on a point, so check half-way between two (connected) trackpoints
1197                                                 int midpointIndex = _midpoints.getNearestPointIndex(clickX, clickY, clickSens);
1198                                                 if (midpointIndex > 0)
1199                                                 {
1200                                                         _drawMode = MODE_CREATE_MIDPOINT;
1201                                                         _clickedPoint = midpointIndex;
1202                                                         _dragFromX = _dragToX = inE.getX();
1203                                                         _dragFromY = _dragToY = inE.getY();
1204                                                 }
1205                                         }
1206                                 }
1207                         }
1208                 }
1209                 // else right-press ignored
1210         }
1211
1212         /**
1213          * Respond to mouse released events
1214          * @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
1215          */
1216         public void mouseReleased(MouseEvent inE)
1217         {
1218                 _recalculate = true;
1219
1220                 if (_drawMode == MODE_DRAG_POINT)
1221                 {
1222                         if (Math.abs(_dragToX - _dragFromX) > 2
1223                                 || Math.abs(_dragToY - _dragFromY) > 2)
1224                         {
1225                                 movePointToMouse(_dragFromX, _dragFromY, _dragToX, _dragToY );
1226                         }
1227                         _drawMode = MODE_DEFAULT;
1228                 }
1229                 else if (_drawMode == MODE_CREATE_MIDPOINT)
1230                 {
1231                         _drawMode = MODE_DEFAULT;
1232                         _app.createPoint(createPointFromClick(_dragToX, _dragToY), _clickedPoint);
1233                 }
1234                 else if (_drawMode == MODE_ZOOM_RECT)
1235                 {
1236                         if (Math.abs(_dragToX - _dragFromX) > 20
1237                          && Math.abs(_dragToY - _dragFromY) > 20)
1238                         {
1239                                 _mapPosition.zoomToPixels(_dragFromX, _dragToX, _dragFromY, _dragToY, getWidth(), getHeight());
1240                         }
1241                         _drawMode = MODE_DEFAULT;
1242                 }
1243                 else if (_drawMode == MODE_MARK_RECTANGLE)
1244                 {
1245                         // Reset app mode
1246                         _app.setCurrentMode(App.AppMode.NORMAL);
1247                         _drawMode = MODE_DEFAULT;
1248                         // Call a function to mark the points
1249                         MarkPointsInRectangleFunction marker = (MarkPointsInRectangleFunction) FunctionLibrary.FUNCTION_MARK_IN_RECTANGLE;
1250                         double lon1 = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(_dragFromX, getWidth()));
1251                         double lat1 = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(_dragFromY, getHeight()));
1252                         double lon2 = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(_dragToX, getWidth()));
1253                         double lat2 = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(_dragToY, getHeight()));
1254                         // Invalidate rectangle if pixel coords are (-1,-1)
1255                         if (_dragFromX < 0 || _dragFromY < 0) {
1256                                 lon1 = lon2;
1257                                 lat1 = lat2;
1258                         }
1259                         marker.setRectCoords(lon1, lat1, lon2, lat2);
1260                         marker.begin();
1261                 }
1262                 _dragFromX = _dragFromY = -1;
1263                 repaint();
1264         }
1265
1266         /**
1267          * Respond to mouse drag events
1268          * @see java.awt.event.MouseMotionListener#mouseDragged(java.awt.event.MouseEvent)
1269          */
1270         public void mouseDragged(MouseEvent inE)
1271         {
1272                 // Note: One would expect inE.isMetaDown() to give information about whether this is a
1273                 //       drag with the right mouse button or not - but since java 9 this is buggy,
1274                 //       so we use the beautifully-named getModifiersEx() instead.
1275                 //       And logically BUTTON3 refers to the secondary mouse button, not the tertiary one!
1276                 final boolean isRightDrag = (inE.getModifiersEx() & InputEvent.BUTTON3_DOWN_MASK) > 0;
1277                 if (isRightDrag)
1278                 {
1279                         // Right-click and drag - update rectangle
1280                         _drawMode = MODE_ZOOM_RECT;
1281                         if (_dragFromX == -1) {
1282                                 _dragFromX = inE.getX();
1283                                 _dragFromY = inE.getY();
1284                         }
1285                         _dragToX = inE.getX();
1286                         _dragToY = inE.getY();
1287                         repaint();
1288                 }
1289                 else
1290                 {
1291                         // Left mouse drag - decide whether to drag the point, drag the
1292                         // marking rectangle or pan the map
1293                         if (_drawMode == MODE_DRAG_POINT || _drawMode == MODE_CREATE_MIDPOINT)
1294                         {
1295                                 // move point
1296                                 _dragToX = inE.getX();
1297                                 _dragToY = inE.getY();
1298                                 _recalculate = true;
1299                                 repaint();
1300                         }
1301                         else if (_drawMode == MODE_MARK_RECTANGLE)
1302                         {
1303                                 // draw a rectangle for marking points
1304                                 if (_dragFromX == -1) {
1305                                         _dragFromX = inE.getX();
1306                                         _dragFromY = inE.getY();
1307                                 }
1308                                 _dragToX = inE.getX();
1309                                 _dragToY = inE.getY();
1310                                 repaint();
1311                         }
1312                         else
1313                         {
1314                                 // regular left-drag pans map by appropriate amount
1315                                 if (_dragFromX != -1)
1316                                 {
1317                                         panMap(_dragFromX - inE.getX(), _dragFromY - inE.getY());
1318                                 }
1319                                 _dragFromX = _dragToX = inE.getX();
1320                                 _dragFromY = _dragToY = inE.getY();
1321                         }
1322                 }
1323         }
1324
1325         /**
1326          * Respond to mouse move events without button pressed
1327          * @param inEvent ignored
1328          */
1329         public void mouseMoved(MouseEvent inEvent)
1330         {
1331                 boolean useCrosshairs = false;
1332                 boolean useResize     = false;
1333                 // Ignore unless we're drawing points
1334                 if (_drawMode == MODE_DRAW_POINTS_CONT)
1335                 {
1336                         _dragToX = inEvent.getX();
1337                         _dragToY = inEvent.getY();
1338                         repaint();
1339                 }
1340                 else if (_drawMode == MODE_MARK_RECTANGLE) {
1341                         useResize = true;
1342                 }
1343                 else if (_editmodeCheckBox.isSelected() || inEvent.isAltDown() || inEvent.isAltGraphDown())
1344                 {
1345                         // Try to find a point or a midpoint at this location, and if there is one
1346                         // then change the cursor to crosshairs
1347                         final double clickX = _mapPosition.getXFromPixels(inEvent.getX(), getWidth());
1348                         final double clickY = _mapPosition.getYFromPixels(inEvent.getY(), getHeight());
1349                         final double clickSens = _mapPosition.getBoundsFromPixels(CLICK_SENSITIVITY);
1350                         useCrosshairs = (_track.getNearestPointIndex(clickX, clickY, clickSens, false) >= 0
1351                                 || _midpoints.getNearestPointIndex(clickX, clickY, clickSens) >= 0
1352                         );
1353                 }
1354                 if (useCrosshairs && !isCursorSet()) {
1355                         setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
1356                 }
1357                 else if (useResize && !isCursorSet()) {
1358                         setCursor(Cursor.getPredefinedCursor(Cursor.SE_RESIZE_CURSOR));
1359                 }
1360                 else if (!useCrosshairs && !useResize && isCursorSet()) {
1361                         setCursor(null);
1362                 }
1363         }
1364
1365         /**
1366          * Respond to status bar message from broker
1367          * @param inMessage message, ignored
1368          */
1369         public void actionCompleted(String inMessage)
1370         {
1371                 // ignore
1372         }
1373
1374         /**
1375          * Respond to data updated message from broker
1376          * @param inUpdateType type of update
1377          */
1378         public void dataUpdated(byte inUpdateType)
1379         {
1380                 _recalculate = true;
1381                 if ((inUpdateType & DataSubscriber.DATA_ADDED_OR_REMOVED) > 0) {
1382                         _checkBounds = true;
1383                 }
1384                 if ((inUpdateType & DataSubscriber.MAPSERVER_CHANGED) > 0)
1385                 {
1386                         // Get the selected map source index and pass to tile manager
1387                         _tileManager.setMapSource(Config.getConfigInt(Config.KEY_MAPSOURCE_INDEX));
1388                         final int wpType = Config.getConfigInt(Config.KEY_WAYPOINT_ICONS);
1389                         if (wpType == WpIconLibrary.WAYPT_DEFAULT)
1390                         {
1391                                 _waypointIconDefinition = null;
1392                         }
1393                         else
1394                         {
1395                                 final int wpSize = Config.getConfigInt(Config.KEY_WAYPOINT_ICON_SIZE);
1396                                 _waypointIconDefinition = WpIconLibrary.getIconDefinition(wpType, wpSize);
1397                         }
1398                 }
1399                 if ((inUpdateType & (DataSubscriber.DATA_ADDED_OR_REMOVED + DataSubscriber.DATA_EDITED)) > 0) {
1400                         _midpoints.updateData(_track);
1401                 }
1402                 // See if rect mode has been activated
1403                 if (_app.getCurrentMode() == App.AppMode.DRAWRECT)
1404                 {
1405                         _drawMode = MODE_MARK_RECTANGLE;
1406                         if (!isCursorSet()) {
1407                                 setCursor(Cursor.getPredefinedCursor(Cursor.SE_RESIZE_CURSOR));
1408                         }
1409                 }
1410                 repaint();
1411                 // enable or disable components
1412                 boolean hasData = _track.getNumPoints() > 0;
1413                 _topPanel.setVisible(hasData);
1414                 _sidePanel.setVisible(hasData);
1415                 // grab focus for the key presses
1416                 this.requestFocus();
1417         }
1418
1419         /**
1420          * Respond to key presses on the map canvas
1421          * @param inE key event
1422          */
1423         public void keyPressed(KeyEvent inE)
1424         {
1425                 int code = inE.getKeyCode();
1426                 int currPointIndex = _selection.getCurrentPointIndex();
1427                 // Check for Ctrl key (for Linux/Win) or meta key (Clover key for Mac)
1428                 if (inE.isControlDown() || inE.isMetaDown())
1429                 {
1430                         // Shift as well makes things faster
1431                         final int pointIncrement = inE.isShiftDown()?3:1;
1432                         // Check for arrow keys to zoom in and out
1433                         if (code == KeyEvent.VK_UP)
1434                                 zoomIn();
1435                         else if (code == KeyEvent.VK_DOWN)
1436                                 zoomOut();
1437                         // Key nav for next/prev point
1438                         else if (code == KeyEvent.VK_LEFT && currPointIndex > 0)
1439                                 _trackInfo.incrementPointIndex(-pointIncrement);
1440                         else if (code == KeyEvent.VK_RIGHT)
1441                                 _trackInfo.incrementPointIndex(pointIncrement);
1442                         else if (code == KeyEvent.VK_PAGE_UP)
1443                                 _trackInfo.selectPoint(Checker.getPreviousSegmentStart(
1444                                         _trackInfo.getTrack(), _trackInfo.getSelection().getCurrentPointIndex()));
1445                         else if (code == KeyEvent.VK_PAGE_DOWN)
1446                                 _trackInfo.selectPoint(Checker.getNextSegmentStart(
1447                                         _trackInfo.getTrack(), _trackInfo.getSelection().getCurrentPointIndex()));
1448                         // Check for home and end
1449                         else if (code == KeyEvent.VK_HOME)
1450                                 _trackInfo.selectPoint(0);
1451                         else if (code == KeyEvent.VK_END)
1452                                 _trackInfo.selectPoint(_trackInfo.getTrack().getNumPoints()-1);
1453                 }
1454                 else
1455                 {
1456                         // Check for arrow keys to pan
1457                         int upwardsPan = 0;
1458                         if (code == KeyEvent.VK_UP)
1459                                 upwardsPan = -PAN_DISTANCE;
1460                         else if (code == KeyEvent.VK_DOWN)
1461                                 upwardsPan = PAN_DISTANCE;
1462                         int rightwardsPan = 0;
1463                         if (code == KeyEvent.VK_RIGHT)
1464                                 rightwardsPan = PAN_DISTANCE;
1465                         else if (code == KeyEvent.VK_LEFT)
1466                                 rightwardsPan = -PAN_DISTANCE;
1467                         panMap(rightwardsPan, upwardsPan);
1468                         // Check for escape
1469                         if (code == KeyEvent.VK_ESCAPE)
1470                                 _drawMode = MODE_DEFAULT;
1471                         // Check for backspace key to delete current point (delete key already handled by menu)
1472                         else if (code == KeyEvent.VK_BACK_SPACE && currPointIndex >= 0) {
1473                                 _app.deleteCurrentPoint();
1474                         }
1475                 }
1476         }
1477
1478         /**
1479          * @param inE key released event, ignored
1480          */
1481         public void keyReleased(KeyEvent e)
1482         {
1483                 // ignore
1484         }
1485
1486         /**
1487          * @param inE key typed event, ignored
1488          */
1489         public void keyTyped(KeyEvent inE)
1490         {
1491                 // ignore
1492         }
1493
1494         /**
1495          * @param inE mouse wheel event indicating scroll direction
1496          */
1497         public void mouseWheelMoved(MouseWheelEvent inE)
1498         {
1499                 int clicks = inE.getWheelRotation();
1500                 if (clicks < 0) {
1501                         panMap((inE.getX() - getWidth()/2)/2, (inE.getY() - getHeight()/2)/2);
1502                         zoomIn();
1503                 }
1504                 else if (clicks > 0) {
1505                         panMap(-(inE.getX() - getWidth()/2), -(inE.getY() - getHeight()/2));
1506                         zoomOut();
1507                 }
1508         }
1509
1510         /**
1511          * @return current map position
1512          */
1513         public MapPosition getMapPosition()
1514         {
1515                 return _mapPosition;
1516         }
1517 }