*
* 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.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
-package org.altusmetrum.altoslib_7;
+package org.altusmetrum.altoslib_13;
import java.io.*;
import java.net.*;
int status;
- public int status() {
+ private static File map_file(AltosLatLon center, int zoom, int maptype, int px_size, int scale) {
+ double lat = center.lat;
+ double lon = center.lon;
+ char chlat = lat < 0 ? 'S' : 'N';
+ char chlon = lon < 0 ? 'W' : 'E';
+
+ if (lat < 0) lat = -lat;
+ if (lon < 0) lon = -lon;
+ String maptype_string = String.format("%s-", AltosMap.maptype_names[maptype]);
+ String format_string;
+ if (maptype == AltosMap.maptype_hybrid || maptype == AltosMap.maptype_satellite || maptype == AltosMap.maptype_terrain)
+ format_string = "jpg";
+ else
+ format_string = "png";
+ return new File(AltosPreferences.mapdir(),
+ String.format("map-%c%.6f,%c%.6f-%s%d%s.%s",
+ chlat, lat, chlon, lon, maptype_string, zoom, scale == 1 ? "" : String.format("-%d", scale), format_string));
+ }
+
+ public static String google_maps_api_key = null;
+
+ private static String google_map_url(AltosLatLon center, int zoom, int maptype, int px_size, int scale, String format_string) {
+ return String.format("http://maps.google.com/maps/api/staticmap?center=%.6f,%.6f&zoom=%d&size=%dx%d&scale=%d&sensor=false&maptype=%s&format=%s&key=%s",
+ center.lat, center.lon, zoom, px_size, px_size, scale,
+ AltosMap.maptype_names[maptype], format_string, google_maps_api_key);
+ }
+
+ private static String altos_map_url(AltosLatLon center, int zoom, int maptype, int px_size, int scale, String format_string) {
+ return String.format("https://maps.altusmetrum.org/cgi-bin/altos-map?lat=%.6f&lon=%.6f&zoom=%d",
+ center.lat, center.lon, zoom);
+ }
+
+ private static String map_url(AltosLatLon center, int zoom, int maptype, int px_size, int scale) {
+ String format_string;
+
+ if (maptype == AltosMap.maptype_hybrid || maptype == AltosMap.maptype_satellite || maptype == AltosMap.maptype_terrain)
+ format_string = "jpg";
+ else
+ format_string = "png32";
+
+ for (int s = 1; s < scale; s <<= 1)
+ zoom--;
+
+ px_size /= scale;
+
+ if (google_maps_api_key != null)
+ return google_map_url(center, zoom, maptype, px_size, scale, format_string);
+ else
+ return altos_map_url(center, zoom, maptype, px_size, scale, format_string);
+ }
+
+ public synchronized int status() {
return status;
}
public synchronized void add_listener(AltosMapStoreListener listener) {
if (!listeners.contains(listener))
listeners.add(listener);
+ listener.notify_store(this, status);
}
public synchronized void remove_listener(AltosMapStoreListener listener) {
static Object forbidden_lock = new Object();
static long forbidden_time;
static boolean forbidden_set;
+ public static int forbidden_response;
private int fetch_url() {
URL u;
synchronized (forbidden_lock) {
forbidden_time = System.nanoTime();
forbidden_set = true;
+ forbidden_response = response;
return AltosMapTile.forbidden;
}
}
file.delete();
return AltosMapTile.bad_request;
}
- return AltosMapTile.success;
+ return AltosMapTile.fetched;
}
static Object fetch_lock = new Object();
static final long forbidden_interval = 60l * 1000l * 1000l * 1000l;
static final long google_maps_ratelimit_ms = 1200;
- class loader implements Runnable {
+ static Object fetcher_lock = new Object();
- public void run() {
- if (file.exists()) {
- notify_listeners(AltosMapTile.success);
- return;
- }
+ static LinkedList<AltosMapStore> waiting = new LinkedList<AltosMapStore>();
+ static LinkedList<AltosMapStore> running = new LinkedList<AltosMapStore>();
+
+ static final int concurrent_fetchers = 128;
- synchronized(forbidden_lock) {
- if (forbidden_set && (System.nanoTime() - forbidden_time) < forbidden_interval) {
- notify_listeners(AltosMapTile.forbidden);
+ static void start_fetchers() {
+ while (!waiting.isEmpty() && running.size() < concurrent_fetchers) {
+ AltosMapStore s = waiting.remove();
+ running.add(s);
+ Thread lt = s.make_fetcher_thread();
+ lt.start();
+ }
+ }
+
+ void finish_fetcher() {
+ synchronized(fetcher_lock) {
+ running.remove(this);
+ start_fetchers();
+ }
+ }
+
+ void add_fetcher() {
+ synchronized(fetcher_lock) {
+ waiting.add(this);
+ start_fetchers();
+ }
+ }
+
+ class fetcher implements Runnable {
+
+ public void run() {
+ try {
+ if (file.exists()) {
+ notify_listeners(AltosMapTile.fetched);
return;
}
- }
- int new_status;
-
- if (!AltosVersion.has_google_maps_api_key()) {
- synchronized (fetch_lock) {
- long startTime = System.nanoTime();
- new_status = fetch_url();
- if (new_status == AltosMapTile.success) {
- 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();
- }
- }
+ synchronized(forbidden_lock) {
+ if (forbidden_set && (System.nanoTime() - forbidden_time) < forbidden_interval) {
+ notify_listeners(AltosMapTile.forbidden);
+ return;
}
}
- } else {
+
+ int new_status;
+
new_status = fetch_url();
+
+ notify_listeners(new_status);
+ } finally {
+ finish_fetcher();
}
- notify_listeners(new_status);
}
}
- private void load() {
- loader l = new loader();
- Thread lt = new Thread(l);
- lt.start();
+ private Thread make_fetcher_thread() {
+ return new Thread(new fetcher());
+ }
+
+ private void fetch() {
+ add_fetcher();
}
private AltosMapStore (String url, File file) {
this.file = file;
if (file.exists())
- status = AltosMapTile.success;
+ status = AltosMapTile.fetched;
else {
- status = AltosMapTile.loading;
- load();
+ status = AltosMapTile.fetching;
+ fetch();
}
}
static HashMap<String,AltosMapStore> stores = new HashMap<String,AltosMapStore>();
- public static AltosMapStore get(String url, File file) {
+ public static AltosMapStore get(AltosLatLon center, int zoom, int maptype, int px_size, int scale) {
+ String url = map_url(center, zoom, maptype, px_size, scale);
+
AltosMapStore store;
synchronized(stores) {
if (stores.containsKey(url)) {
store = stores.get(url);
} else {
- store = new AltosMapStore(url, file);
+ store = new AltosMapStore(url, map_file(center, zoom, maptype, px_size, scale));
stores.put(url, store);
}
}
return store;
}
+
}
projects / fw / altos / blobdiff