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Diffstat (limited to 'altoslib/AltosMapTile.java')
| -rw-r--r-- | altoslib/AltosMapTile.java | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/altoslib/AltosMapTile.java b/altoslib/AltosMapTile.java new file mode 100644 index 00000000..a6ba5da5 --- /dev/null +++ b/altoslib/AltosMapTile.java @@ -0,0 +1,128 @@ +/* + * 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_8; + +import java.io.*; +import java.util.*; + +public abstract class AltosMapTile implements AltosFontListener { + AltosMapTileListener listener; + public AltosLatLon upper_left, center; + public int px_size; + int zoom; + int maptype; + int scale; + public AltosMapStore store; + public AltosMapCache cache; + public int status; + + static public final int success = 0; + static public final int loading = 1; + static public final int failed = 2; + static public final int bad_request = 3; + static public final int forbidden = 4; + + 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) { + } + + public void set_status(int status) { + this.status = status; + listener.notify_tile(this, status); + } + + public void notify_image(AltosImage image) { + listener.notify_tile(this, status); + } + + public int store_status() { + return store.status(); + } + + public void add_store_listener(AltosMapStoreListener listener) { + store.add_listener(listener); + } + + public void remove_store_listener(AltosMapStoreListener listener) { + store.remove_listener(listener); + } + + public abstract void paint(AltosMapTransform t); + + public AltosMapTile(AltosMapTileListener listener, AltosLatLon upper_left, AltosLatLon center, int zoom, int maptype, int px_size, int scale) { + this.listener = listener; + this.upper_left = upper_left; + this.cache = listener.cache(); + + 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; + + status = AltosMapTile.loading; + store = AltosMapStore.get(map_url(), map_file()); + } + + public AltosMapTile(AltosMapTileListener listener, AltosLatLon upper_left, AltosLatLon center, int zoom, int maptype, int px_size) { + this(listener, upper_left, center, zoom, maptype, px_size, 1); + } +} |