-/*
- * 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);
- }
-}
-