+++ /dev/null
-/*
- * 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 javax.swing.*;
-import javax.imageio.ImageIO;
-import java.awt.image.*;
-import java.io.*;
-import java.net.URL;
-import java.net.URLConnection;
-
-public class AltosSiteMapCache extends JLabel {
- static final long google_maps_ratelimit_ms = 1200;
- // Google limits static map queries to 50 per minute per IP, so
- // each query should take at least 1.2 seconds.
-
- public static boolean fetchMap(File file, String url) {
- URL u;
- long startTime = System.nanoTime();
-
- 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;
- }
-
- long duration_ms = (System.nanoTime() - startTime) / 1000000;
- if (duration_ms < google_maps_ratelimit_ms) {
- try {
- Thread.sleep(google_maps_ratelimit_ms - duration_ms);
- } catch (InterruptedException e) {
- Thread.currentThread().interrupt();
- }
- }
-
- return true;
- }
-
- public static ImageIcon fetchAndLoadMap(File pngfile, String url) {
- if (!pngfile.exists()) {
- if (!fetchMap(pngfile, url)) {
- return null;
- }
- }
- return loadMap(pngfile, url);
- }
-
- public static ImageIcon loadMap(File pngfile, String url) {
- if (!pngfile.exists()) {
- return null;
- }
-
- try {
- BufferedImage img;
-
- img = ImageIO.read(pngfile);
- if (img == null) {
- System.out.printf("# Can't read pngfile %s\n", pngfile);
- return null;
- }
- return new ImageIcon(img);
- } catch (IOException e) {
- System.out.printf("# IO error trying to load %s\n", pngfile);
- return null;
- }
- }
-}