public void setZoom(int zoom, Point mapPoint) {
if (zoom > tileController.getTileSource().getMaxZoom()
|| zoom < tileController.getTileSource().getMinZoom()
|| zoom == this.zoom) return;
Coordinate zoomPos = getPosition(mapPoint);
tileController.cancelOutstandingJobs(); // Clearing outstanding load
// requests
setDisplayPositionByLatLon(mapPoint, zoomPos.getLat(), zoomPos.getLon(), zoom);
}
public JMapViewer(TileCache tileCache, int downloadThreadCount) {
super();
tileController = new TileController(new OsmTileSource.Mapnik(), tileCache, this);
mapChangeListenerList = new ArrayList<MapViewChangeListener>();
overlayPainterList = new ArrayList<OverlayPainter>();
mapMarkerList = new LinkedList<MapMarker>();
mapRectangleList = new LinkedList<MapRectangle>();
mapMarkersVisible = true;
mapRectanglesVisible = true;
tileGridVisible = false;
setLayout(null);
initializeZoomSlider();
setMinimumSize(new Dimension(Tile.SIZE, Tile.SIZE));
setPreferredSize(new Dimension(400, 400));
setDisplayPositionByLatLon(50, 9, 3);
}
/**
* Changes the map pane so that it is centered on the specified coordinate at the given zoom
* level.
*
* @param lat latitude of the specified coordinate
* @param lon longitude of the specified coordinate
* @param zoom {@link #MIN_ZOOM} <= zoom level <= {@link #MAX_ZOOM}
*/
public void setDisplayPositionByLatLon(double lat, double lon, int zoom) {
setDisplayPositionByLatLon(new Point(getWidth() / 2, getHeight() / 2), lat, lon, zoom);
}