+/*
+ * Copyright © 2010 Anthony Towns <aj@erisian.com.au>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package altosui;
+
+import java.awt.*;
+import java.awt.image.*;
+import java.awt.event.*;
+import javax.swing.*;
+import javax.imageio.ImageIO;
+import javax.swing.table.*;
+import java.io.*;
+import java.util.*;
+import java.text.*;
+import java.util.prefs.*;
+import java.net.URL;
+import java.net.URLConnection;
+
+public class AltosSiteMapLabel extends JLabel {
+ public static boolean fetchMap(File file, String url) {
+ URL u;
+ try {
+ u = new URL(url);
+ } catch (java.net.MalformedURLException e) {
+ return false;
+ }
+
+ byte[] data;
+ try {
+ URLConnection uc = u.openConnection();
+ int contentLength = uc.getContentLength();
+ InputStream in = new BufferedInputStream(uc.getInputStream());
+ int bytesRead = 0;
+ int offset = 0;
+ data = new byte[contentLength];
+ while (offset < contentLength) {
+ bytesRead = in.read(data, offset, data.length - offset);
+ if (bytesRead == -1)
+ break;
+ offset += bytesRead;
+ }
+ in.close();
+
+ if (offset != contentLength) {
+ return false;
+ }
+ } catch (IOException e) {
+ return false;
+ }
+
+ try {
+ FileOutputStream out = new FileOutputStream(file);
+ out.write(data);
+ out.flush();
+ out.close();
+ } catch (FileNotFoundException e) {
+ return false;
+ } catch (IOException e) {
+ if (file.exists()) {
+ file.delete();
+ }
+ return false;
+ }
+ return true;
+ }
+
+ public void fetchAndLoadMap(final File pngfile, final String url) {
+ System.out.printf("# Trying to fetch %s...\n", pngfile);
+
+ Thread thread = new Thread() {
+ public void run() {
+ try {
+ if (fetchMap(pngfile, url)) {
+ setIcon(new ImageIcon(ImageIO.read(pngfile)));
+ }
+ } catch (Exception e) {
+ System.out.printf("# Failed to fetch file %s\n", pngfile);
+ System.out.printf(" wget -O '%s' ''\n", pngfile, url);
+ }
+ }
+ };
+ thread.start();
+ }
+
+ public void fetchMap(double lat, double lng, int zoom, int px_size) {
+ File pngfile = MapFile(lat, lng, zoom);
+ String url = MapURL(lat, lng, zoom, px_size);
+
+ if (!pngfile.exists()) {
+ fetchMap(pngfile, url);
+ }
+ }
+
+ public void loadMap(double lat, double lng, int zoom, int px_size) {
+ File pngfile = MapFile(lat, lng, zoom);
+ String url = MapURL(lat, lng, zoom, px_size);
+
+ if (!pngfile.exists()) {
+ fetchAndLoadMap(pngfile, url);
+ return;
+ }
+
+ try {
+ setIcon(new ImageIcon(ImageIO.read(pngfile)));
+ return;
+ } catch (IOException e) {
+ System.out.printf("# IO error trying to load %s\n", pngfile);
+ return;
+ }
+ }
+
+ private static File MapFile(double lat, double lng, int zoom) {
+ 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 static String MapURL(double lat, double lng,
+ int zoom, int px_size)
+ {
+ 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);
+ }
+}
+
projects / fw / altos / commitdiff