+ public void reset() {
+ // nothing
+ }
+
+ private void bgLoadMap(final int i,
+ final File pngfile, final String pngurl)
+ {
+ Thread thread = new Thread() {
+ public void run() {
+ ImageIcon res;
+ res = AltosSiteMapCache.fetchAndLoadMap(pngfile, pngurl);
+ if (res != null) {
+ mapTiles[i].loadMap(res);
+ } else {
+ System.out.printf("# Failed to fetch file %s\n", pngfile);
+ System.out.printf(" wget -O '%s' ''\n", pngfile, pngurl);
+ }
+ }
+ };
+ thread.start();
+ }
+
+ public static void prefetchMaps(double lat, double lng, int w, int h) {
+ AltosPreferences.init(null);
+
+ AltosSiteMap asm = new AltosSiteMap(true);
+ Point2D.Double c = asm.getBaseLocation(lat, lng);
+ Point2D.Double p = new Point2D.Double();
+ Point2D.Double p2;
+ int dx = -w/2, dy = -h/2;
+ for (int y = dy; y < h+dy; y++) {
+ for (int x = dx; x < w+dx; x++) {
+ LatLng map_latlng = asm.latlng(
+ -c.x + x*px_size + px_size/2,
+ -c.y + y*px_size + px_size/2);
+ File pngfile = asm.MapFile(map_latlng.lat, map_latlng.lng);
+ String pngurl = asm.MapURL(map_latlng.lat, map_latlng.lng);
+ if (pngfile.exists()) {
+ System.out.printf("Already have %s\n", pngfile);
+ } else if (AltosSiteMapCache.fetchMap(pngfile, pngurl)) {
+ System.out.printf("Fetched map %s\n", pngfile);
+ } else {
+ System.out.printf("# Failed to fetch file %s\n", pngfile);
+ System.out.printf(" wget -O '%s' ''\n", pngfile, pngurl);
+ }
+ }
+ }
+ }
+
+ private void initMaps(double lat, double lng) {
+ Point2D.Double c = getBaseLocation(lat, lng);
+ Point2D.Double p = new Point2D.Double();
+
+ for (int i = 0; i < 9; i++) {
+ int x = i%3 - 1, y = i/3 - 1;
+
+ tileOffset[i] = new Point2D.Double(
+ c.x - x*px_size, p.y = c.y - y*px_size);
+ LatLng map_latlng = latlng(
+ -tileOffset[i].x+px_size/2,
+ -tileOffset[i].y+px_size/2);
+
+ File pngfile = MapFile(map_latlng.lat, map_latlng.lng);
+ String pngurl = MapURL(map_latlng.lat, map_latlng.lng);
+ bgLoadMap(i, pngfile, pngurl);
+ }
+ }
+
+ private File MapFile(double lat, double lng) {
+ char chlat = lat < 0 ? 'S' : 'N';
+ char chlng = lng < 0 ? 'E' : 'W';
+ if (lat < 0) lat = -lat;
+ if (lng < 0) lng = -lng;
+ return new File(AltosPreferences.logdir(),
+ String.format("map-%c%.6f,%c%.6f-%d.png",
+ chlat, lat, chlng, lng, zoom));
+ }
+
+ private String MapURL(double lat, double lng) {
+ return String.format("http://maps.google.com/maps/api/staticmap?center=%.6f,%.6f&zoom=%d&size=%dx%d&sensor=false&maptype=hybrid&format=png32", lat, lng, zoom, px_size, px_size);
+ }
+
+ boolean initialised = false;
+ public void show(AltosState state, int crc_errors) {
+ // if insufficient gps data, nothing to update
+ if (state.gps == null || !state.gps.locked) {
+ if (state.pad_lat == 0 && state.pad_lon == 0)
+ return;
+ if (state.ngps < 3)
+ return;
+ }
+
+ if (!initialised) {
+ initMaps(state.pad_lat, state.pad_lon);
+ initialised = true;
+ }
+
+ Point2D.Double pt = pt(state.gps.lat, state.gps.lon);
+ for (int x = 0; x < mapTiles.length; x++) {
+ mapTiles[x].show(state, crc_errors,
+ translatePoint(pt, tileOffset[x]));
+ }
+ }
+
+ private AltosSiteMap(boolean knowWhatYouAreDoing) {
+ if (!knowWhatYouAreDoing) {
+ throw new RuntimeException("Arggh.");
+ }
+ }
+
+ public AltosSiteMap() {
+ JComponent comp = new JComponent() {
+ GrabNDrag scroller = new GrabNDrag(this);
+ {
+ addMouseMotionListener(scroller);
+ addMouseListener(scroller);
+ setAutoscrolls(true);
+ }
+ };
+
+ GridBagLayout layout = new GridBagLayout();
+ comp.setLayout(layout);
+
+ GridBagConstraints c = new GridBagConstraints();
+ c.anchor = GridBagConstraints.CENTER;
+ c.fill = GridBagConstraints.BOTH;
+
+ // put some space between the map tiles, debugging only
+ // c.insets = new Insets(5, 5, 5, 5);
+ for (int x = 0; x < 9; x++) {
+ c.gridx = x % 3;
+ c.gridy = x / 3;
+ mapTiles[x] = new AltosSiteMapTile(px_size);
+ layout.setConstraints(mapTiles[x], c);
+ comp.add(mapTiles[x]);
+ }
+ setViewportView(comp);
+ setPreferredSize(new Dimension(500,200));
+ }
+}