Merge branch 'master' of ssh://git.gag.com/scm/git/fw/altos

[fw/altos] / altoslib / AltosMapTile.java

diff --git a/altoslib/AltosMapTile.java b/altoslib/AltosMapTile.java
new file mode 100644 (file)
index 0000000..ee9206e
--- /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_7;
+
+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);
+       }
+}