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(
 349                         _xRange.getMinimum(), _xRange.getMaximum(),
 350                         _yRange.getMinimum(), _yRange.getMaximum(),
 351                         getWidth(), getHeight(),
 352                         _tileManager.getMaxZoomLevel());
 353         }
 354
 355
 356         /**
 357          * Paint method
 358          * @see java.awt.Canvas#paint(java.awt.Graphics)
 359          */
 360         public void paint(Graphics inG)
 361         {
 362                 super.paint(inG);
 363                 if (_mapImage != null && (_mapImage.getWidth() != getWidth() || _mapImage.getHeight() != getHeight())) {
 364                         _mapImage = null;
 365                 }
 366                 if (_track.getNumPoints() > 0)
 367                 {
 368                         // Check for autopan if enabled / necessary
 369                         if (_autopanCheckBox.isSelected())
 370                         {
 371                                 int selectedPoint = _selection.getCurrentPointIndex();
 372                                 if (selectedPoint >= 0 && _dragFromX == -1 && selectedPoint != _prevSelectedPoint)
 373                                 {
 374                                         autopanToPoint(selectedPoint);
 375                                 }
 376                                 _prevSelectedPoint = selectedPoint;
 377                         }
 378
 379                         // Draw the map contents if necessary
 380                         if (_mapImage == null || _recalculate)
 381                         {
 382                                 paintMapContents();
 383                                 _scaleBar.updateScale(_mapPosition.getZoom(), _mapPosition.getYFromPixels(0, 0));
 384                         }
 385                         // Draw the prepared image onto the panel
 386                         if (_mapImage != null) {
 387                                 inG.drawImage(_mapImage, 0, 0, getWidth(), getHeight(), null);
 388                         }
 389
 390                         switch (_drawMode)
 391                         {
 392                                 case MODE_DRAG_POINT:
 393                                         drawDragLines(inG, _selection.getCurrentPointIndex()-1, _selection.getCurrentPointIndex()+1);
 394                                         break;
 395
 396                                 case MODE_CREATE_MIDPOINT:
 397                                         drawDragLines(inG, _clickedPoint-1, _clickedPoint);
 398                                         break;
 399
 400                                 case MODE_ZOOM_RECT:
 401                                 case MODE_MARK_RECTANGLE:
 402                                         if (_dragFromX != -1 && _dragFromY != -1)
 403                                         {
 404                                                 // Draw the zoom rectangle if necessary
 405                                                 inG.setColor(Color.RED);
 406                                                 inG.drawLine(_dragFromX, _dragFromY, _dragFromX, _dragToY);
 407                                                 inG.drawLine(_dragFromX, _dragFromY, _dragToX, _dragFromY);
 408                                                 inG.drawLine(_dragToX, _dragFromY, _dragToX, _dragToY);
 409                                                 inG.drawLine(_dragFromX, _dragToY, _dragToX, _dragToY);
 410                                         }
 411                                         break;
 412
 413                                 case MODE_DRAW_POINTS_CONT:
 414                                         // draw line to mouse position to show drawing mode
 415                                         inG.setColor(Config.getColourScheme().getColour(ColourScheme.IDX_POINT));
 416                                         int prevIndex = _track.getNumPoints()-1;
 417                                         int px = getWidth() / 2 + _mapPosition.getXFromCentre(_track.getX(prevIndex));
 418                                         int py = getHeight() / 2 + _mapPosition.getYFromCentre(_track.getY(prevIndex));
 419                                         inG.drawLine(px, py, _dragToX, _dragToY);
 420                                         break;
 421                         }
 422                 }
 423                 else
 424                 {
 425                         inG.setColor(Config.getColourScheme().getColour(ColourScheme.IDX_BACKGROUND));
 426                         inG.fillRect(0, 0, getWidth(), getHeight());
 427                         inG.setColor(COLOR_MESSAGES);
 428                         inG.drawString(I18nManager.getText("display.nodata"), 50, getHeight()/2);
 429                         _scaleBar.updateScale(-1, 0);
 430                 }
 431                 // Draw slider etc on top
 432                 paintChildren(inG);
 433         }
 434
 435         /**
 436          * @return true if the currently selected point is visible, false if off-screen or nothing selected
 437          */
 438         private boolean isCurrentPointVisible()
 439         {
 440                 if (_trackInfo.getCurrentPoint() == null) {return false;}
 441                 final int selectedPoint = _selection.getCurrentPointIndex();
 442                 final int xFromCentre = Math.abs(_mapPosition.getXFromCentre(_track.getX(selectedPoint)));
 443                 if (xFromCentre > (getWidth()/2)) {return false;}
 444                 final int yFromCentre = Math.abs(_mapPosition.getYFromCentre(_track.getY(selectedPoint)));
 445                 return yFromCentre < (getHeight()/2);
 446         }
 447
 448         /**
 449          * If the specified point isn't visible, pan to it
 450          * @param inIndex index of selected point
 451          */
 452         private void autopanToPoint(int inIndex)
 453         {
 454                 int px = getWidth() / 2 + _mapPosition.getXFromCentre(_track.getX(inIndex));
 455                 int py = getHeight() / 2 + _mapPosition.getYFromCentre(_track.getY(inIndex));
 456                 int panX = 0;
 457                 int panY = 0;
 458                 if (px < PAN_DISTANCE) {
 459                         panX = px - AUTOPAN_DISTANCE;
 460                 }
 461                 else if (px > (getWidth()-PAN_DISTANCE)) {
 462                         panX = AUTOPAN_DISTANCE + px - getWidth();
 463                 }
 464                 if (py < (2*PAN_DISTANCE)) {
 465                         panY = py - AUTOPAN_DISTANCE;
 466                 }
 467                 if (py > (getHeight()-PAN_DISTANCE)) {
 468                         panY = AUTOPAN_DISTANCE + py - getHeight();
 469                 }
 470                 if (panX != 0 || panY != 0) {
 471                         _mapPosition.pan(panX, panY);
 472                 }
 473         }
 474
 475         /**
 476          * Paint the map tiles and the points on to the _mapImage
 477          */
 478         private void paintMapContents()
 479         {
 480                 if (_mapImage == null || _mapImage.getWidth() != getWidth() || _mapImage.getHeight() != getHeight())
 481                 {
 482                         _mapImage = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_INT_RGB);
 483                 }
 484
 485                 Graphics g = _mapImage.getGraphics();
 486                 // Set antialiasing according to config
 487                 ((Graphics2D) g).setRenderingHint(RenderingHints.KEY_ANTIALIASING,
 488                         Config.getConfigBoolean(Config.KEY_ANTIALIAS) ? RenderingHints.VALUE_ANTIALIAS_ON : RenderingHints.VALUE_ANTIALIAS_OFF);
 489                 // Clear to background
 490                 g.setColor(Config.getColourScheme().getColour(ColourScheme.IDX_BACKGROUND));
 491                 g.fillRect(0, 0, getWidth(), getHeight());
 492
 493                 // Check whether maps are on or not
 494                 final boolean showMap = Config.getConfigBoolean(Config.KEY_SHOW_MAP);
 495                 _mapCheckBox.setSelected(showMap);
 496                 // Check whether disk cache is on or not
 497                 final boolean usingDiskCache = Config.getConfigString(Config.KEY_DISK_CACHE) != null;
 498                 // Show tip to recommend setting up a cache
 499                 if (showMap && !usingDiskCache && Config.getConfigBoolean(Config.KEY_ONLINE_MODE))
 500                 {
 501                         SwingUtilities.invokeLater(new Runnable() {
 502                                 public void run() {
 503                                         _app.showTip(TipManager.Tip_UseAMapCache);
 504                                 }
 505                         });
 506                 }
 507
 508                 // reset error message
 509                 if (!showMap) {_shownOsmErrorAlready = false;}
 510                 _recalculate = false;
 511                 // Only get map tiles if selected
 512                 if (showMap)
 513                 {
 514                         // init tile cacher
 515                         _tileManager.centreMap(_mapPosition.getZoom(), _mapPosition.getCentreTileX(), _mapPosition.getCentreTileY());
 516
 517                         boolean loadingFailed = false;
 518                         if (_mapImage == null) return;
 519
 520                         if (_tileManager.isOverzoomed())
 521                         {
 522                                 // display overzoom message
 523                                 g.setColor(COLOR_MESSAGES);
 524                                 g.drawString(I18nManager.getText("map.overzoom"), 50, getHeight()/2);
 525                         }
 526                         else
 527                         {
 528                                 int numLayers = _tileManager.getNumLayers();
 529                                 // Loop over tiles drawing each one
 530                                 int[] tileIndices = _mapPosition.getTileIndices(getWidth(), getHeight());
 531                                 int[] pixelOffsets = _mapPosition.getDisplayOffsets(getWidth(), getHeight());
 532                                 for (int tileX = tileIndices[0]; tileX <= tileIndices[1] && !loadingFailed; tileX++)
 533                                 {
 534                                         int x = (tileX - tileIndices[0]) * 256 - pixelOffsets[0];
 535                                         for (int tileY = tileIndices[2]; tileY <= tileIndices[3]; tileY++)
 536                                         {
 537                                                 int y = (tileY - tileIndices[2]) * 256 - pixelOffsets[1];
 538                                                 // Loop over layers
 539                                                 for (int l=0; l<numLayers; l++)
 540                                                 {
 541                                                         Image image = _tileManager.getTile(l, tileX, tileY, true);
 542                                                         if (image != null) {
 543                                                                 g.drawImage(image, x, y, 256, 256, null);
 544                                                         }
 545                                                 }
 546                                         }
 547                                 }
 548
 549                                 // Make maps brighter / fainter according to slider
 550                                 final int brightnessIndex = Math.max(1, _transparencySlider.getValue()) - 1;
 551                                 if (brightnessIndex > 0)
 552                                 {
 553                                         final int[] alphas = {0, 40, 80, 120, 160, 210};
 554                                         Color bgColor = Config.getColourScheme().getColour(ColourScheme.IDX_BACKGROUND);
 555                                         bgColor = new Color(bgColor.getRed(), bgColor.getGreen(), bgColor.getBlue(), alphas[brightnessIndex]);
 556                                         g.setColor(bgColor);
 557                                         g.fillRect(0, 0, getWidth(), getHeight());
 558                                 }
 559                         }
 560                 }
 561
 562                 // Work out track opacity according to slider
 563                 final float[] opacities = {1.0f, 0.75f, 0.5f, 0.3f, 0.15f, 0.0f};
 564                 float trackOpacity = 1.0f;
 565                 if (_transparencySlider.getValue() < 0) {
 566                         trackOpacity = opacities[-1 - _transparencySlider.getValue()];
 567                 }
 568
 569                 if (trackOpacity > 0.0f)
 570                 {
 571                         // Paint the track points on top
 572                         boolean pointsPainted = true;
 573                         try
 574                         {
 575                                 if (trackOpacity > 0.9f)
 576                                 {
 577                                         // Track is fully opaque, just draw it directly
 578                                         pointsPainted = paintPoints(g);
 579                                         _trackImage = null;
 580                                 }
 581                                 else
 582                                 {
 583                                         // Track is partly transparent, so use a separate BufferedImage
 584                                         if (_trackImage == null || _trackImage.getWidth() != getWidth() || _trackImage.getHeight() != getHeight())
 585                                         {
 586                                                 _trackImage = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_INT_ARGB);
 587                                         }
 588                                         // Clear to transparent
 589                                         Graphics2D gTrack = _trackImage.createGraphics();
 590                                         gTrack.setComposite(AlphaComposite.getInstance(AlphaComposite.CLEAR, 0.0f));
 591                                         gTrack.fillRect(0, 0, getWidth(), getHeight());
 592                                         gTrack.setPaintMode();
 593                                         // Draw the track onto this separate image
 594                                         pointsPainted = paintPoints(gTrack);
 595                                         ((Graphics2D) g).setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, trackOpacity));
 596                                         g.drawImage(_trackImage, 0, 0, null);
 597                                 }
 598                         }
 599                         catch (NullPointerException npe) {} // ignore, probably due to data being changed during drawing
 600                         catch (ArrayIndexOutOfBoundsException obe) {} // also ignore
 601
 602                         // Zoom to fit if no points found
 603                         if (!pointsPainted && _checkBounds)
 604                         {
 605                                 zoomToFit();
 606                                 _recalculate = true;
 607                                 repaint();
 608                         }
 609                 }
 610
 611                 // free g
 612                 g.dispose();
 613
 614                 _checkBounds = false;
 615                 // enable / disable transparency slider
 616                 _transparencySlider.setEnabled(showMap);
 617         }
 618
 619
 620         /**
 621          * Paint the points using the given graphics object
 622          * @param inG Graphics object to use for painting
 623          * @return true if any points or lines painted
 624          */
 625         private boolean paintPoints(Graphics inG)
 626         {
 627                 // Set up colours
 628                 final ColourScheme cs = Config.getColourScheme();
 629                 final Color pointColour  = cs.getColour(ColourScheme.IDX_POINT);
 630                 final Color rangeColour  = cs.getColour(ColourScheme.IDX_SELECTION);
 631                 final Color currentColour = cs.getColour(ColourScheme.IDX_PRIMARY);
 632                 final Color secondColour = cs.getColour(ColourScheme.IDX_SECONDARY);
 633                 final Color textColour   = cs.getColour(ColourScheme.IDX_TEXT);
 634                 final PointColourer pointColourer = _app.getPointColourer();
 635
 636                 final int winWidth  = getWidth();
 637                 final int winHeight = getHeight();
 638                 final int halfWinWidth  = winWidth / 2;
 639                 final int halfWinHeight = winHeight / 2;
 640
 641                 final int numPoints = _track.getNumPoints();
 642                 final int[] xPixels = new int[numPoints];
 643                 final int[] yPixels = new int[numPoints];
 644
 645                 final int pointSeparationForArrowsSqd = 350;
 646                 final int pointSeparation1dForArrows = (int) (Math.sqrt(pointSeparationForArrowsSqd) * 0.7);
 647
 648                 // try to set line width for painting
 649                 if (inG instanceof Graphics2D)
 650                 {
 651                         int lineWidth = Config.getConfigInt(Config.KEY_LINE_WIDTH);
 652                         if (lineWidth < 1 || lineWidth > 4) {lineWidth = 2;}
 653                         ((Graphics2D) inG).setStroke(new BasicStroke(lineWidth));
 654                 }
 655
 656                 boolean pointsPainted = false;
 657                 // draw track points
 658                 inG.setColor(pointColour);
 659                 int prevX = -1, prevY = -1;
 660                 final int connectState = _connectCheckBox.getCurrentState();
 661                 final boolean drawLines = (connectState != 3);  // 0, 1 or 2
 662                 final boolean drawPoints = (connectState != 1); // 0, 2 or 3
 663                 final boolean drawArrows = (connectState == 0); // 0
 664
 665                 boolean prevPointVisible = false, currPointVisible = false;
 666                 boolean anyWaypoints = false;
 667                 boolean isWaypoint = false;
 668                 boolean drawnLastArrow = false; // avoid painting arrows on adjacent lines, looks too busy
 669                 for (int i=0; i<numPoints; i++)
 670                 {
 671                         // Calculate pixel position of point from its x, y coordinates
 672                         int px = halfWinWidth  + _mapPosition.getXFromCentre(_track.getX(i));
 673                         int py = halfWinHeight + _mapPosition.getYFromCentre(_track.getY(i));
 674                         px = wrapLongitudeValue(px, winWidth, _mapPosition.getZoom());
 675                         // Remember these calculated pixel values so they don't have to be recalculated
 676                         xPixels[i] = px; yPixels[i] = py;
 677
 678                         currPointVisible = px >= 0 && px < winWidth && py >= 0 && py < winHeight;
 679                         isWaypoint = _track.getPoint(i).isWaypoint();
 680                         anyWaypoints = anyWaypoints || isWaypoint;
 681                         if (!isWaypoint)
 682                         {
 683                                 if (currPointVisible || (drawLines && prevPointVisible))
 684                                 {
 685                                         // For track points, work out which colour to use
 686                                         if (_track.getPoint(i).getDeleteFlag()) {
 687                                                 inG.setColor(currentColour);
 688                                         }
 689                                         else if (pointColourer != null)
 690                                         {  // use the point colourer if there is one
 691                                                 Color trackColour = pointColourer.getColour(i);
 692                                                 inG.setColor(trackColour);
 693                                         }
 694                                         else
 695                                         {
 696                                                 inG.setColor(pointColour);
 697                                         }
 698
 699                                         // Draw rectangle for track point if it's visible
 700                                         if (currPointVisible)
 701                                         {
 702                                                 if (drawPoints) {
 703                                                         inG.drawRect(px-2, py-2, 3, 3);
 704                                                 }
 705                                                 pointsPainted = true;
 706                                         }
 707                                 }
 708
 709                                 // Connect track points if either of them are visible
 710                                 if (drawLines
 711                                  && (currPointVisible || prevPointVisible)
 712                                  && !(prevX == -1 && prevY == -1)
 713                                  && !_track.getPoint(i).getSegmentStart())
 714                                 {
 715                                         inG.drawLine(prevX, prevY, px, py);
 716                                         pointsPainted = true;
 717
 718                                         // Now consider whether we need to draw an arrow as well
 719                                         if (drawArrows
 720                                          && !drawnLastArrow
 721                                          && (Math.abs(prevX-px) > pointSeparation1dForArrows || Math.abs(prevY-py) > pointSeparation1dForArrows))
 722                                         {
 723                                                 final double pointSeparationSqd = (prevX-px) * (prevX-px) + (prevY-py) * (prevY-py);
 724                                                 if (pointSeparationSqd > pointSeparationForArrowsSqd)
 725                                                 {
 726                                                         final double midX = (prevX + px) / 2;
 727                                                         final double midY = (prevY + py) / 2;
 728                                                         final boolean midPointVisible = midX >= 0 && midX < winWidth && midY >= 0 && midY < winHeight;
 729                                                         if (midPointVisible)
 730                                                         {
 731                                                                 final double alpha = Math.atan2(py - prevY, px - prevX);
 732                                                                 //System.out.println("Draw arrow from (" + prevX + "," + prevY + ") to (" + px + "," + py
 733                                                                 //      + ") with angle" + (int) (alpha * 180/Math.PI));
 734                                                                 final double MID_TO_VERTEX = 3.0;
 735                                                                 final double arrowX = MID_TO_VERTEX * Math.cos(alpha);
 736                                                                 final double arrowY = MID_TO_VERTEX * Math.sin(alpha);
 737                                                                 final double vertexX = midX + arrowX;
 738                                                                 final double vertexY = midY + arrowY;
 739                                                                 inG.drawLine((int)(midX-arrowX-2*arrowY), (int)(midY-arrowY+2*arrowX), (int)vertexX, (int)vertexY);
 740                                                                 inG.drawLine((int)(midX-arrowX+2*arrowY), (int)(midY-arrowY-2*arrowX), (int)vertexX, (int)vertexY);
 741                                                         }
 742                                                         drawnLastArrow = midPointVisible;
 743                                                 }
 744                                         }
 745                                         else
 746                                         {
 747                                                 drawnLastArrow = false;
 748                                         }
 749                                 }
 750                                 prevX = px; prevY = py;
 751                         }
 752                         prevPointVisible = currPointVisible;
 753                 }
 754
 755                 // Loop over points, just drawing blobs for waypoints
 756                 inG.setColor(textColour);
 757                 FontMetrics fm = inG.getFontMetrics();
 758                 int nameHeight = fm.getHeight();
 759                 if (anyWaypoints)
 760                 {
 761                         int numWaypoints = 0;
 762                         for (int i=0; i<_track.getNumPoints(); i++)
 763                         {
 764                                 if (_track.getPoint(i).isWaypoint())
 765                                 {
 766                                         int px = xPixels[i];
 767                                         int py = yPixels[i];
 768                                         if (px >= 0 && px < winWidth && py >= 0 && py < winHeight)
 769                                         {
 770                                                 if (_waypointIconDefinition == null)
 771                                                 {
 772                                                         inG.fillRect(px-3, py-3, 6, 6);
 773                                                 }
 774                                                 else
 775                                                 {
 776                                                         ImageIcon icon = _waypointIconDefinition.getImageIcon();
 777                                                         if (icon != null)
 778                                                         {
 779                                                                 inG.drawImage(icon.getImage(), px-_waypointIconDefinition.getXOffset(),
 780                                                                         py-_waypointIconDefinition.getYOffset(), null);
 781                                                         }
 782                                                 }
 783                                                 pointsPainted = true;
 784                                                 numWaypoints++;
 785                                         }
 786                                 }
 787                         }
 788                         // Take more care with waypoint names if less than 100 are visible
 789                         final int numNameSteps = (numWaypoints > 100 ? 1 : 4);
 790                         final int numPointSteps = (numWaypoints > 1000 ? 2 : 1);
 791
 792                         // Loop over points again, now draw names for waypoints
 793                         int[] nameXs = {0, 0, 0, 0};
 794                         int[] nameYs = {0, 0, 0, 0};
 795                         for (int i=0; i<_track.getNumPoints(); i += numPointSteps)
 796                         {
 797                                 if (_track.getPoint(i).isWaypoint())
 798                                 {
 799                                         int px = xPixels[i];
 800                                         int py = yPixels[i];
 801                                         if (px >= 0 && px < winWidth && py >= 0 && py < winHeight)
 802                                         {
 803                                                 // Figure out where to draw waypoint name so it doesn't obscure track
 804                                                 String waypointName = _track.getPoint(i).getWaypointName();
 805                                                 int nameWidth = fm.stringWidth(waypointName);
 806                                                 boolean drawnName = false;
 807                                                 // Make arrays for coordinates right left up down
 808                                                 nameXs[0] = px + 2; nameXs[1] = px - nameWidth - 2;
 809                                                 nameXs[2] = nameXs[3] = px - nameWidth/2;
 810                                                 nameYs[0] = nameYs[1] = py + (nameHeight/2);
 811                                                 nameYs[2] = py - 2; nameYs[3] = py + nameHeight + 2;
 812                                                 for (int extraSpace = 0; extraSpace < numNameSteps && !drawnName; extraSpace++)
 813                                                 {
 814                                                         // Shift arrays for coordinates right left up down
 815                                                         nameXs[0] += 3; nameXs[1] -= 3;
 816                                                         nameYs[2] -= 3; nameYs[3] += 3;
 817                                                         // Check each direction in turn right left up down
 818                                                         for (int a=0; a<4; a++)
 819                                                         {
 820                                                                 if (nameXs[a] > 0 && (nameXs[a] + nameWidth) < winWidth
 821                                                                         && nameYs[a] < winHeight && (nameYs[a] - nameHeight) > 0
 822                                                                         && !MapUtils.overlapsPoints(_mapImage, nameXs[a], nameYs[a], nameWidth, nameHeight, textColour))
 823                                                                 {
 824                                                                         // Found a rectangle to fit - draw name here and quit
 825                                                                         inG.drawString(waypointName, nameXs[a], nameYs[a]);
 826                                                                         drawnName = true;
 827                                                                         break;
 828                                                                 }
 829                                                         }
 830                                                 }
 831                                         }
 832                                 }
 833                         }
 834                 }
 835                 // Loop over points, drawing blobs for photo / audio points
 836                 inG.setColor(secondColour);
 837                 for (int i=0; i<_track.getNumPoints(); i++)
 838                 {
 839                         if (_track.getPoint(i).hasMedia())
 840                         {
 841                                 int px = xPixels[i];
 842                                 int py = yPixels[i];
 843                                 if (px >= 0 && px < winWidth && py >= 0 && py < winHeight)
 844                                 {
 845                                         inG.drawRect(px-1, py-1, 2, 2);
 846                                         inG.drawRect(px-2, py-2, 4, 4);
 847                                         pointsPainted = true;
 848                                 }
 849                         }
 850                 }
 851
 852                 // Draw selected range
 853                 if (_selection.hasRangeSelected())
 854                 {
 855                         inG.setColor(rangeColour);
 856                         for (int i=_selection.getStart(); i<=_selection.getEnd(); i++)
 857                         {
 858                                 int px = xPixels[i];
 859                                 int py = yPixels[i];
 860                                 inG.drawRect(px-1, py-1, 2, 2);
 861                         }
 862                 }
 863
 864                 // Draw crosshairs at selected point
 865                 int selectedPoint = _selection.getCurrentPointIndex();
 866                 if (selectedPoint >= 0)
 867                 {
 868                         int px = xPixels[selectedPoint];
 869                         int py = yPixels[selectedPoint];
 870                         inG.setColor(currentColour);
 871                         // crosshairs
 872                         inG.drawLine(px, 0, px, winHeight);
 873                         inG.drawLine(0, py, winWidth, py);
 874                 }
 875                 // Return the number of points painted
 876                 return pointsPainted;
 877         }
 878
 879         /**
 880          * Wrap the given pixel value if appropriate and possible
 881          * @param inPx Pixel x coordinate
 882          * @param inWinWidth window width in pixels
 883          * @param inZoom zoom level
 884          * @return modified pixel x coordinate
 885          */
 886         private static int wrapLongitudeValue(int inPx, int inWinWidth, int inZoom)
 887         {
 888                 if (inPx > inWinWidth)
 889                 {
 890                         // Pixel is too far right, could we wrap it back onto the screen?
 891                         int px = inPx;
 892                         while (px > inWinWidth) {
 893                                 px -= (256 << inZoom);
 894                         }
 895                         if (px >= 0) {
 896                                 return px; // successfully wrapped back onto the screen
 897                         }
 898                 }
 899                 else if (inPx < 0)
 900                 {
 901                         // Pixel is too far left, could we wrap it back onto the screen?
 902                         int px = inPx;
 903                         while (px < 0) {
 904                                 px += (256 << inZoom);
 905                         }
 906                         if (px < inWinWidth) {
 907                                 return px; // successfully wrapped back onto the screen
 908                         }
 909                 }
 910                 // Either it's already on the screen or couldn't be wrapped
 911                 return inPx;
 912         }
 913
 914         /**
 915          * Draw the lines while dragging a point
 916          * @param inG graphics object
 917          * @param inPrevIndex index of point to draw from
 918          * @param inNextIndex index of point to draw to
 919          */
 920         private void drawDragLines(Graphics inG, int inPrevIndex, int inNextIndex)
 921         {
 922                 inG.setColor(Config.getColourScheme().getColour(ColourScheme.IDX_POINT));
 923                 // line from prev point to cursor
 924                 if (inPrevIndex > -1 && !_track.getPoint(inPrevIndex+1).getSegmentStart())
 925                 {
 926                         final int px = getWidth() / 2 + _mapPosition.getXFromCentre(_track.getX(inPrevIndex));
 927                         final int py = getHeight() / 2 + _mapPosition.getYFromCentre(_track.getY(inPrevIndex));
 928                         inG.drawLine(px, py, _dragToX, _dragToY);
 929                 }
 930                 if (inNextIndex < _track.getNumPoints() && !_track.getPoint(inNextIndex).getSegmentStart())
 931                 {
 932                         final int px = getWidth() / 2 + _mapPosition.getXFromCentre(_track.getX(inNextIndex));
 933                         final int py = getHeight() / 2 + _mapPosition.getYFromCentre(_track.getY(inNextIndex));
 934                         inG.drawLine(px, py, _dragToX, _dragToY);
 935                 }
 936         }
 937
 938         /**
 939          * Inform that tiles have been updated and the map can be repainted
 940          * @param inIsOk true if data loaded ok, false for error
 941          */
 942         public void tilesUpdated(boolean inIsOk)
 943         {
 944                 synchronized(this)
 945                 {
 946                         // Show message if loading failed (but not too many times)
 947                         if (!inIsOk && !_shownOsmErrorAlready && _mapCheckBox.isSelected())
 948                         {
 949                                 _shownOsmErrorAlready = true;
 950                                 // use separate thread to show message about failing to load osm images
 951                                 new Thread(new Runnable() {
 952                                         public void run() {
 953                                                 try {Thread.sleep(500);} catch (InterruptedException ie) {}
 954                                                 _app.showErrorMessage("error.osmimage.dialogtitle", "error.osmimage.failed");
 955                                         }
 956                                 }).start();
 957                         }
 958                         _recalculate = true;
 959                         repaint();
 960                 }
 961         }
 962
 963         /**
 964          * Zoom out, if not already at minimum zoom
 965          */
 966         public void zoomOut()
 967         {
 968                 _mapPosition.zoomOut();
 969                 _recalculate = true;
 970                 repaint();
 971         }
 972
 973         /**
 974          * Zoom in, if not already at maximum zoom
 975          */
 976         public void zoomIn()
 977         {
 978                 // See if selected point is currently visible, if so (and autopan on) then autopan after zoom to keep it visible
 979                 boolean wasVisible = _autopanCheckBox.isSelected() && isCurrentPointVisible();
 980                 _mapPosition.zoomIn();
 981                 if (wasVisible && !isCurrentPointVisible()) {
 982                         autopanToPoint(_selection.getCurrentPointIndex());
 983                 }
 984                 _recalculate = true;
 985                 repaint();
 986         }
 987
 988         /**
 989          * Pan map
 990          * @param inDeltaX x shift
 991          * @param inDeltaY y shift
 992          */
 993         public void panMap(int inDeltaX, int inDeltaY)
 994         {
 995                 _mapPosition.pan(inDeltaX, inDeltaY);
 996                 _recalculate = true;
 997                 repaint();
 998         }
 999
1000         /**
1001          * Create a DataPoint object from the given click coordinates
1002          * @param inX x coordinate of click
1003          * @param inY y coordinate of click
1004          * @return DataPoint with given coordinates and no altitude
1005          */
1006         private DataPoint createPointFromClick(int inX, int inY)
1007         {
1008                 double lat = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(inY, getHeight()));
1009                 double lon = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(inX, getWidth()));
1010                 return new DataPoint(new Latitude(lat, Coordinate.FORMAT_NONE),
1011                         new Longitude(lon, Coordinate.FORMAT_NONE), null);
1012         }
1013
1014         /**
1015          * Move a DataPoint object to the given mouse coordinates
1016          * @param startX start x coordinate of mouse
1017          * @param startY start y coordinate of mouse
1018          * @param endX end x coordinate of mouse
1019          * @param endY end y coordinate of mouse
1020          */
1021         private void movePointToMouse(int startX, int startY, int endX, int endY )
1022         {
1023                 double lat1 = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(startY, getHeight()));
1024                 double lon1 = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(startX, getWidth()));
1025                 double lat_delta = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(endY, getHeight())) - lat1;
1026                 double lon_delta = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(endX, getWidth())) - lon1;
1027
1028                 DataPoint point = _trackInfo.getCurrentPoint();
1029                 if (point == null) {
1030                         return;
1031                 }
1032
1033                 // Make lists for edit and undo, and add each changed field in turn
1034                 FieldEditList editList = new FieldEditList();
1035                 FieldEditList undoList = new FieldEditList();
1036
1037                 // Check field list
1038                 FieldList fieldList = _track.getFieldList();
1039                 int numFields = fieldList.getNumFields();
1040                 for (int i=0; i<numFields; i++)
1041                 {
1042                         Field field = fieldList.getField(i);
1043                         if (field == Field.LATITUDE) {
1044                                 editList.addEdit(new FieldEdit(field, Double.toString(point.getLatitude().getDouble() + lat_delta)));
1045                                 undoList.addEdit(new FieldEdit(field, point.getFieldValue(Field.LATITUDE)));
1046                         }
1047                         else if (field == Field.LONGITUDE) {
1048                                 editList.addEdit(new FieldEdit(field, Double.toString(point.getLongitude().getDouble() + lon_delta)));
1049                                 undoList.addEdit(new FieldEdit(field, point.getFieldValue(Field.LONGITUDE)));
1050                         }
1051                 }
1052                 _app.completePointEdit(editList, undoList);
1053         }
1054
1055
1056         /**
1057          * @see javax.swing.JComponent#getMinimumSize()
1058          */
1059         public Dimension getMinimumSize()
1060         {
1061                 final Dimension minSize = new Dimension(512, 300);
1062                 return minSize;
1063         }
1064
1065         /**
1066          * @see javax.swing.JComponent#getPreferredSize()
1067          */
1068         public Dimension getPreferredSize()
1069         {
1070                 return getMinimumSize();
1071         }
1072
1073
1074         /**
1075          * Respond to mouse click events
1076          * @see java.awt.event.MouseListener#mouseClicked(java.awt.event.MouseEvent)
1077          */
1078         public void mouseClicked(MouseEvent inE)
1079         {
1080                 if (_track != null && _track.getNumPoints() > 0)
1081                 {
1082                         // select point if it's a left-click
1083                         if (!inE.isMetaDown())
1084                         {
1085                                 if (inE.getClickCount() == 1)
1086                                 {
1087                                         // single click
1088                                         if (_drawMode == MODE_DEFAULT)
1089                                         {
1090                                                 int pointIndex = _clickedPoint;
1091                                                 if (pointIndex == INDEX_UNKNOWN)
1092                                                 {
1093                                                         // index hasn't been calculated yet
1094                                                         pointIndex = _track.getNearestPointIndex(
1095                                                          _mapPosition.getXFromPixels(inE.getX(), getWidth()),
1096                                                          _mapPosition.getYFromPixels(inE.getY(), getHeight()),
1097                                                          _mapPosition.getBoundsFromPixels(CLICK_SENSITIVITY), false);
1098                                                 }
1099                                                 // Extend selection for shift-click
1100                                                 if (inE.isShiftDown()) {
1101                                                         _trackInfo.extendSelection(pointIndex);
1102                                                 }
1103                                                 else {
1104                                                         _trackInfo.selectPoint(pointIndex);
1105                                                 }
1106                                         }
1107                                         else if (_drawMode == MODE_DRAW_POINTS_START)
1108                                         {
1109                                                 _app.createPoint(createPointFromClick(inE.getX(), inE.getY()));
1110                                                 _dragToX = inE.getX();
1111                                                 _dragToY = inE.getY();
1112                                                 _drawMode = MODE_DRAW_POINTS_CONT;
1113                                         }
1114                                         else if (_drawMode == MODE_DRAW_POINTS_CONT)
1115                                         {
1116                                                 DataPoint point = createPointFromClick(inE.getX(), inE.getY());
1117                                                 _app.createPoint(point, false); // not a new segment
1118                                         }
1119                                 }
1120                                 else if (inE.getClickCount() == 2)
1121                                 {
1122                                         // double click
1123                                         if (_drawMode == MODE_DEFAULT) {
1124                                                 panMap(inE.getX() - getWidth()/2, inE.getY() - getHeight()/2);
1125                                                 zoomIn();
1126                                         }
1127                                         else if (_drawMode == MODE_DRAW_POINTS_START || _drawMode == MODE_DRAW_POINTS_CONT) {
1128                                                 _drawMode = MODE_DEFAULT;
1129                                         }
1130                                 }
1131                         }
1132                         else
1133                         {
1134                                 // show the popup menu for right-clicks
1135                                 _popupMenuX = inE.getX();
1136                                 _popupMenuY = inE.getY();
1137                                 _popup.show(this, _popupMenuX, _popupMenuY);
1138                         }
1139                 }
1140                 // Reset app mode
1141                 _app.setCurrentMode(App.AppMode.NORMAL);
1142                 if (_drawMode == MODE_MARK_RECTANGLE) _drawMode = MODE_DEFAULT;
1143         }
1144
1145         /**
1146          * Ignore mouse enter events
1147          * @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)
1148          */
1149         public void mouseEntered(MouseEvent inE)
1150         {
1151                 // ignore
1152         }
1153
1154         /**
1155          * Ignore mouse exited events
1156          * @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)
1157          */
1158         public void mouseExited(MouseEvent inE)
1159         {
1160                 // ignore
1161         }
1162
1163         /**
1164          * React to mouse pressed events to initiate a point drag
1165          * @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent)
1166          */
1167         public void mousePressed(MouseEvent inE)
1168         {
1169                 _clickedPoint = INDEX_UNKNOWN;
1170                 if (_track == null || _track.getNumPoints() <= 0)
1171                         return;
1172                 if (!inE.isMetaDown())
1173                 {
1174                         // Left mouse drag - check if point is near; if so select it for dragging
1175                         if (_drawMode == MODE_DEFAULT)
1176                         {
1177                                 /* Drag points if edit mode is enabled OR ALT is pressed */
1178                                 if (_editmodeCheckBox.isSelected() || inE.isAltDown() || inE.isAltGraphDown())
1179                                 {
1180                                         final double clickX = _mapPosition.getXFromPixels(inE.getX(), getWidth());
1181                                         final double clickY = _mapPosition.getYFromPixels(inE.getY(), getHeight());
1182                                         final double clickSens = _mapPosition.getBoundsFromPixels(CLICK_SENSITIVITY);
1183                                         _clickedPoint = _track.getNearestPointIndex(clickX, clickY, clickSens, false);
1184
1185                                         if (_clickedPoint >= 0)
1186                                         {
1187                                                 // TODO: maybe use another color of the cross or remove the cross while dragging???
1188
1189                                                 _trackInfo.selectPoint(_clickedPoint);
1190                                                 if (_trackInfo.getCurrentPoint() != null)
1191                                                 {
1192                                                         _drawMode = MODE_DRAG_POINT;
1193                                                         _dragFromX = _dragToX = inE.getX();
1194                                                         _dragFromY = _dragToY = inE.getY();
1195                                                 }
1196                                         }
1197                                         else
1198                                         {
1199                                                 // Not a click on a point, so check half-way between two (connected) trackpoints
1200                                                 int midpointIndex = _midpoints.getNearestPointIndex(clickX, clickY, clickSens);
1201                                                 if (midpointIndex > 0)
1202                                                 {
1203                                                         _drawMode = MODE_CREATE_MIDPOINT;
1204                                                         _clickedPoint = midpointIndex;
1205                                                         _dragFromX = _dragToX = inE.getX();
1206                                                         _dragFromY = _dragToY = inE.getY();
1207                                                 }
1208                                         }
1209                                 }
1210                         }
1211                 }
1212                 // else right-press ignored
1213         }
1214
1215         /**
1216          * Respond to mouse released events
1217          * @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
1218          */
1219         public void mouseReleased(MouseEvent inE)
1220         {
1221                 _recalculate = true;
1222
1223                 if (_drawMode == MODE_DRAG_POINT)
1224                 {
1225                         if (Math.abs(_dragToX - _dragFromX) > 2
1226                                 || Math.abs(_dragToY - _dragFromY) > 2)
1227                         {
1228                                 movePointToMouse(_dragFromX, _dragFromY, _dragToX, _dragToY );
1229                         }
1230                         _drawMode = MODE_DEFAULT;
1231                 }
1232                 else if (_drawMode == MODE_CREATE_MIDPOINT)
1233                 {
1234                         _drawMode = MODE_DEFAULT;
1235                         _app.createPoint(createPointFromClick(_dragToX, _dragToY), _clickedPoint);
1236                 }
1237                 else if (_drawMode == MODE_ZOOM_RECT)
1238                 {
1239                         if (Math.abs(_dragToX - _dragFromX) > 20
1240                          && Math.abs(_dragToY - _dragFromY) > 20)
1241                         {
1242                                 _mapPosition.zoomToPixels(_dragFromX, _dragToX, _dragFromY, _dragToY, getWidth(), getHeight());
1243                         }
1244                         _drawMode = MODE_DEFAULT;
1245                 }
1246                 else if (_drawMode == MODE_MARK_RECTANGLE)
1247                 {
1248                         // Reset app mode
1249                         _app.setCurrentMode(App.AppMode.NORMAL);
1250                         _drawMode = MODE_DEFAULT;
1251                         // Call a function to mark the points
1252                         MarkPointsInRectangleFunction marker = (MarkPointsInRectangleFunction) FunctionLibrary.FUNCTION_MARK_IN_RECTANGLE;
1253                         double lon1 = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(_dragFromX, getWidth()));
1254                         double lat1 = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(_dragFromY, getHeight()));
1255                         double lon2 = MapUtils.getLongitudeFromX(_mapPosition.getXFromPixels(_dragToX, getWidth()));
1256                         double lat2 = MapUtils.getLatitudeFromY(_mapPosition.getYFromPixels(_dragToY, getHeight()));
1257                         // Invalidate rectangle if pixel coords are (-1,-1)
1258                         if (_dragFromX < 0 || _dragFromY < 0) {
1259                                 lon1 = lon2;
1260                                 lat1 = lat2;
1261                         }
1262                         marker.setRectCoords(lon1, lat1, lon2, lat2);
1263                         marker.begin();
1264                 }
1265                 _dragFromX = _dragFromY = -1;
1266                 repaint();
1267         }
1268
1269         /**
1270          * Respond to mouse drag events
1271          * @see java.awt.event.MouseMotionListener#mouseDragged(java.awt.event.MouseEvent)
1272          */
1273         public void mouseDragged(MouseEvent inE)
1274         {
1275                 // Note: One would expect inE.isMetaDown() to give information about whether this is a
1276                 //       drag with the right mouse button or not - but since java 9 this is buggy,
1277                 //       so we use the beautifully-named getModifiersEx() instead.
1278                 //       And logically BUTTON3 refers to the secondary mouse button, not the tertiary one!
1279                 final boolean isRightDrag = (inE.getModifiersEx() & InputEvent.BUTTON3_DOWN_MASK) > 0;
1280                 if (isRightDrag)
1281                 {
1282                         // Right-click and drag - update rectangle
1283                         _drawMode = MODE_ZOOM_RECT;
1284                         if (_dragFromX == -1) {
1285                                 _dragFromX = inE.getX();
1286                                 _dragFromY = inE.getY();
1287                         }
1288                         _dragToX = inE.getX();
1289                         _dragToY = inE.getY();
1290                         repaint();
1291                 }
1292                 else
1293                 {
1294                         // Left mouse drag - decide whether to drag the point, drag the
1295                         // marking rectangle or pan the map
1296                         if (_drawMode == MODE_DRAG_POINT || _drawMode == MODE_CREATE_MIDPOINT)
1297                         {
1298                                 // move point
1299                                 _dragToX = inE.getX();
1300                                 _dragToY = inE.getY();
1301                                 _recalculate = true;
1302                                 repaint();
1303                         }
1304                         else if (_drawMode == MODE_MARK_RECTANGLE)
1305                         {
1306                                 // draw a rectangle for marking points
1307                                 if (_dragFromX == -1) {
1308                                         _dragFromX = inE.getX();
1309                                         _dragFromY = inE.getY();
1310                                 }
1311                                 _dragToX = inE.getX();
1312                                 _dragToY = inE.getY();
1313                                 repaint();
1314                         }
1315                         else
1316                         {
1317                                 // regular left-drag pans map by appropriate amount
1318                                 if (_dragFromX != -1)
1319                                 {
1320                                         panMap(_dragFromX - inE.getX(), _dragFromY - inE.getY());
1321                                 }
1322                                 _dragFromX = _dragToX = inE.getX();
1323                                 _dragFromY = _dragToY = inE.getY();
1324                         }
1325                 }
1326         }
1327
1328         /**
1329          * Respond to mouse move events without button pressed
1330          * @param inEvent ignored
1331          */
1332         public void mouseMoved(MouseEvent inEvent)
1333         {
1334                 boolean useCrosshairs = false;
1335                 boolean useResize     = false;
1336                 // Ignore unless we're drawing points
1337                 if (_drawMode == MODE_DRAW_POINTS_CONT)
1338                 {
1339                         _dragToX = inEvent.getX();
1340                         _dragToY = inEvent.getY();
1341                         repaint();
1342                 }
1343                 else if (_drawMode == MODE_MARK_RECTANGLE) {
1344                         useResize = true;
1345                 }
1346                 else if (_editmodeCheckBox.isSelected() || inEvent.isAltDown() || inEvent.isAltGraphDown())
1347                 {
1348                         // Try to find a point or a midpoint at this location, and if there is one
1349                         // then change the cursor to crosshairs
1350                         final double clickX = _mapPosition.getXFromPixels(inEvent.getX(), getWidth());
1351                         final double clickY = _mapPosition.getYFromPixels(inEvent.getY(), getHeight());
1352                         final double clickSens = _mapPosition.getBoundsFromPixels(CLICK_SENSITIVITY);
1353                         useCrosshairs = (_track.getNearestPointIndex(clickX, clickY, clickSens, false) >= 0
1354                                 || _midpoints.getNearestPointIndex(clickX, clickY, clickSens) >= 0
1355                         );
1356                 }
1357                 if (useCrosshairs && !isCursorSet()) {
1358                         setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
1359                 }
1360                 else if (useResize && !isCursorSet()) {
1361                         setCursor(Cursor.getPredefinedCursor(Cursor.SE_RESIZE_CURSOR));
1362                 }
1363                 else if (!useCrosshairs && !useResize && isCursorSet()) {
1364                         setCursor(null);
1365                 }
1366         }
1367
1368         /**
1369          * Respond to status bar message from broker
1370          * @param inMessage message, ignored
1371          */
1372         public void actionCompleted(String inMessage)
1373         {
1374                 // ignore
1375         }
1376
1377         /**
1378          * Respond to data updated message from broker
1379          * @param inUpdateType type of update
1380          */
1381         public void dataUpdated(byte inUpdateType)
1382         {
1383                 _recalculate = true;
1384                 if ((inUpdateType & DataSubscriber.DATA_ADDED_OR_REMOVED) > 0) {
1385                         _checkBounds = true;
1386                 }
1387                 if ((inUpdateType & DataSubscriber.MAPSERVER_CHANGED) > 0)
1388                 {
1389                         // Get the selected map source index and pass to tile manager
1390                         _tileManager.setMapSource(Config.getConfigInt(Config.KEY_MAPSOURCE_INDEX));
1391                         final int wpType = Config.getConfigInt(Config.KEY_WAYPOINT_ICONS);
1392                         if (wpType == WpIconLibrary.WAYPT_DEFAULT)
1393                         {
1394                                 _waypointIconDefinition = null;
1395                         }
1396                         else
1397                         {
1398                                 final int wpSize = Config.getConfigInt(Config.KEY_WAYPOINT_ICON_SIZE);
1399                                 _waypointIconDefinition = WpIconLibrary.getIconDefinition(wpType, wpSize);
1400                         }
1401                 }
1402                 if ((inUpdateType & (DataSubscriber.DATA_ADDED_OR_REMOVED + DataSubscriber.DATA_EDITED)) > 0) {
1403                         _midpoints.updateData(_track);
1404                 }
1405                 // See if rect mode has been activated
1406                 if (_app.getCurrentMode() == App.AppMode.DRAWRECT)
1407                 {
1408                         _drawMode = MODE_MARK_RECTANGLE;
1409                         if (!isCursorSet()) {
1410                                 setCursor(Cursor.getPredefinedCursor(Cursor.SE_RESIZE_CURSOR));
1411                         }
1412                 }
1413                 repaint();
1414                 // enable or disable components
1415                 boolean hasData = _track.getNumPoints() > 0;
1416                 _topPanel.setVisible(hasData);
1417                 _sidePanel.setVisible(hasData);
1418                 // grab focus for the key presses
1419                 this.requestFocus();
1420         }
1421
1422         /**
1423          * Respond to key presses on the map canvas
1424          * @param inE key event
1425          */
1426         public void keyPressed(KeyEvent inE)
1427         {
1428                 int code = inE.getKeyCode();
1429                 int currPointIndex = _selection.getCurrentPointIndex();
1430                 // Check for Ctrl key (for Linux/Win) or meta key (Clover key for Mac)
1431                 if (inE.isControlDown() || inE.isMetaDown())
1432                 {
1433                         // Shift as well makes things faster
1434                         final int pointIncrement = inE.isShiftDown()?3:1;
1435                         // Check for arrow keys to zoom in and out
1436                         if (code == KeyEvent.VK_UP)
1437                                 zoomIn();
1438                         else if (code == KeyEvent.VK_DOWN)
1439                                 zoomOut();
1440                         // Key nav for next/prev point
1441                         else if (code == KeyEvent.VK_LEFT && currPointIndex > 0)
1442                                 _trackInfo.incrementPointIndex(-pointIncrement);
1443                         else if (code == KeyEvent.VK_RIGHT)
1444                                 _trackInfo.incrementPointIndex(pointIncrement);
1445                         else if (code == KeyEvent.VK_PAGE_UP)
1446                                 _trackInfo.selectPoint(Checker.getPreviousSegmentStart(
1447                                         _trackInfo.getTrack(), _trackInfo.getSelection().getCurrentPointIndex()));
1448                         else if (code == KeyEvent.VK_PAGE_DOWN)
1449                                 _trackInfo.selectPoint(Checker.getNextSegmentStart(
1450                                         _trackInfo.getTrack(), _trackInfo.getSelection().getCurrentPointIndex()));
1451                         // Check for home and end
1452                         else if (code == KeyEvent.VK_HOME)
1453                                 _trackInfo.selectPoint(0);
1454                         else if (code == KeyEvent.VK_END)
1455                                 _trackInfo.selectPoint(_trackInfo.getTrack().getNumPoints()-1);
1456                 }
1457                 else
1458                 {
1459                         // Check for arrow keys to pan
1460                         int upwardsPan = 0;
1461                         if (code == KeyEvent.VK_UP)
1462                                 upwardsPan = -PAN_DISTANCE;
1463                         else if (code == KeyEvent.VK_DOWN)
1464                                 upwardsPan = PAN_DISTANCE;
1465                         int rightwardsPan = 0;
1466                         if (code == KeyEvent.VK_RIGHT)
1467                                 rightwardsPan = PAN_DISTANCE;
1468                         else if (code == KeyEvent.VK_LEFT)
1469                                 rightwardsPan = -PAN_DISTANCE;
1470                         panMap(rightwardsPan, upwardsPan);
1471                         // Check for escape
1472                         if (code == KeyEvent.VK_ESCAPE)
1473                                 _drawMode = MODE_DEFAULT;
1474                         // Check for backspace key to delete current point (delete key already handled by menu)
1475                         else if (code == KeyEvent.VK_BACK_SPACE && currPointIndex >= 0) {
1476                                 _app.deleteCurrentPoint();
1477                         }
1478                 }
1479         }
1480
1481         /**
1482          * @param inE key released event, ignored
1483          */
1484         public void keyReleased(KeyEvent e)
1485         {
1486                 // ignore
1487         }
1488
1489         /**
1490          * @param inE key typed event, ignored
1491          */
1492         public void keyTyped(KeyEvent inE)
1493         {
1494                 // ignore
1495         }
1496
1497         /**
1498          * @param inE mouse wheel event indicating scroll direction
1499          */
1500         public void mouseWheelMoved(MouseWheelEvent inE)
1501         {
1502                 int clicks = inE.getWheelRotation();
1503                 if (clicks < 0) {
1504                         panMap((inE.getX() - getWidth()/2)/2, (inE.getY() - getHeight()/2)/2);
1505                         zoomIn();
1506                 }
1507                 else if (clicks > 0) {
1508                         panMap(-(inE.getX() - getWidth()/2), -(inE.getY() - getHeight()/2));
1509                         zoomOut();
1510                 }
1511         }
1512
1513         /**
1514          * @return current map position
1515          */
1516         public MapPosition getMapPosition()
1517         {
1518                 return _mapPosition;
1519         }
1520 }