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/*
* 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 org.altusmetrum.altoslib_10;
import java.io.*;
import java.util.*;
public abstract class AltosMapTile implements AltosFontListener, AltosMapStoreListener {
LinkedList<AltosMapTileListener> listeners = new LinkedList<AltosMapTileListener>();
public AltosLatLon upper_left, center;
public int px_size;
int zoom;
int maptype;
int scale;
private AltosMapCache cache;
public AltosMapStore store;
public int status;
static public final int loaded = 0; /* loaded from file */
static public final int fetched = 1; /* downloaded to file */
static public final int fetching = 2; /* downloading from net */
static public final int failed = 3; /* loading from file failed */
static public final int bad_request = 4;/* downloading failed */
static public final int forbidden = 5; /* downloading failed */
private File map_file() {
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));
}
private String map_url() {
String format_string;
int z = zoom;
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)
z--;
if (AltosVersion.has_google_maps_api_key())
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, z, px_size/scale, px_size/scale, scale, AltosMap.maptype_names[maptype], format_string, AltosVersion.google_maps_api_key);
else
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",
center.lat, center.lon, z, px_size/scale, px_size/scale, AltosMap.maptype_names[maptype], format_string);
}
public void font_size_changed(int font_size) {
}
private synchronized void notify_listeners(int status) {
this.status = status;
for (AltosMapTileListener listener : listeners)
listener.notify_tile(this, status);
}
public void notify_store(AltosMapStore store, int status) {
// System.out.printf("AltosMapTile.notify_store %d\n", status);
notify_listeners(status);
}
public void notify_image(AltosImage image) {
if (image == null)
status = failed;
else
status = loaded;
notify_listeners(status);
}
public abstract void paint(AltosMapTransform t);
public AltosImage get_image() {
if (cache == null)
return null;
return cache.get(this);
}
public synchronized void add_listener(AltosMapTileListener listener) {
if (!listeners.contains(listener))
listeners.add(listener);
listener.notify_tile(this, status);
}
public synchronized void remove_listener(AltosMapTileListener listener) {
listeners.remove(listener);
}
public AltosMapTile(AltosMapCache cache, AltosLatLon upper_left, AltosLatLon center, int zoom, int maptype, int px_size, int scale) {
this.cache = cache;
this.upper_left = upper_left;
while (center.lon < -180.0)
center.lon += 360.0;
while (center.lon > 180.0)
center.lon -= 360.0;
this.center = center;
this.zoom = zoom;
this.maptype = maptype;
this.px_size = px_size;
this.scale = scale;
store = AltosMapStore.get(map_url(), map_file());
store.add_listener(this);
}
public AltosMapTile(AltosMapCache cache, AltosLatLon upper_left, AltosLatLon center, int zoom, int maptype, int px_size) {
this(cache, upper_left, center, zoom, maptype, px_size, 1);
}
}
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