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package cgeo.geocaching;
import cgeo.geocaching.files.LocalStorage;
import cgeo.geocaching.geopoint.GeopointFormatter.Format;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpResponse;
import android.app.Activity;
import android.content.Context;
import android.util.Log;
import android.view.Display;
import android.view.WindowManager;
import java.io.File;
public class StaticMapsProvider {
private static final String MARKERS_URL = "http://cgeo.carnero.cc/_markers/";
/**
* in my tests the "no image available" image had 5470 bytes, while "street only" maps had at least 20000 bytes
*/
private static final int MIN_MAP_IMAGE_BYTES = 6000;
public static File getMapFile(final String geocode, String prefix, final int level, final boolean createDirs) {
return LocalStorage.getStorageFile(geocode, "map_" + prefix + level, false, createDirs);
}
private static void downloadMapsInThread(final cgCache cache, String markerUrl, String prefix, String latlonMap, int edge, String waypoints) {
downloadMap(cache, 20, "satellite", markerUrl, prefix, 1, latlonMap, edge, waypoints);
downloadMap(cache, 18, "satellite", markerUrl, prefix, 2, latlonMap, edge, waypoints);
downloadMap(cache, 16, "roadmap", markerUrl, prefix, 3, latlonMap, edge, waypoints);
downloadMap(cache, 14, "roadmap", markerUrl, prefix, 4, latlonMap, edge, waypoints);
downloadMap(cache, 11, "roadmap", markerUrl, prefix, 5, latlonMap, edge, waypoints);
}
private static void downloadMap(cgCache cache, int zoom, String mapType, String markerUrl, String prefix, int level, String latlonMap, int edge, String waypoints) {
final String mapUrl = "http://maps.google.com/maps/api/staticmap?center=" + latlonMap;
final String url = mapUrl + "&zoom=" + zoom + "&size=" + edge + "x" + edge + "&maptype=" + mapType + "&markers=icon%3A" + markerUrl + "%7C" + latlonMap + waypoints + "&sensor=false";
final File file = getMapFile(cache.getGeocode(), prefix, level, true);
final HttpResponse httpResponse = cgBase.request(url, null, false);
if (httpResponse != null) {
if (LocalStorage.saveEntityToFile(httpResponse.getEntity(), file)) {
// Delete image if it has no contents
final long fileSize = file.length();
if (fileSize < MIN_MAP_IMAGE_BYTES) {
file.delete();
}
}
}
}
public static void downloadMaps(cgCache cache, Activity activity) {
if ((!Settings.isStoreOfflineMaps() && !Settings.isStoreOfflineWpMaps()) || StringUtils.isBlank(cache.getGeocode())) {
return;
}
int edge = guessMinDisplaySide(activity);
if (Settings.isStoreOfflineMaps() && cache.getCoords() != null) {
storeCacheStaticMap(cache, edge);
}
// download static map for current waypoints
if (Settings.isStoreOfflineWpMaps() && CollectionUtils.isNotEmpty(cache.getWaypoints())) {
for (cgWaypoint waypoint : cache.getWaypoints()) {
storeWaypointStaticMap(cache, edge, waypoint);
}
}
}
public static void storeWaypointStaticMap(cgCache cache, Activity activity, cgWaypoint waypoint) {
int edge = StaticMapsProvider.guessMinDisplaySide(activity);
storeWaypointStaticMap(cache, edge, waypoint);
}
private static void storeWaypointStaticMap(cgCache cache, int edge, cgWaypoint waypoint) {
if (waypoint.getCoords() == null) {
return;
}
String wpLatlonMap = waypoint.getCoords().format(Format.LAT_LON_DECDEGREE_COMMA);
String wpMarkerUrl = getWpMarkerUrl(waypoint);
// download map images in separate background thread for higher performance
downloadMaps(cache, wpMarkerUrl, "wp" + waypoint.getId() + "_", wpLatlonMap, edge, "");
}
public static void storeCacheStaticMap(cgCache cache, Activity activity) {
int edge = StaticMapsProvider.guessMinDisplaySide(activity);
storeCacheStaticMap(cache, edge);
}
private static void storeCacheStaticMap(cgCache cache, int edge) {
final String latlonMap = cache.getCoords().format(Format.LAT_LON_DECDEGREE_COMMA);
final StringBuilder waypoints = new StringBuilder();
if (cache.hasWaypoints()) {
for (cgWaypoint waypoint : cache.getWaypoints()) {
if (waypoint.getCoords() == null) {
continue;
}
String wpMarkerUrl = getWpMarkerUrl(waypoint);
waypoints.append("&markers=icon%3A");
waypoints.append(wpMarkerUrl);
waypoints.append("%7C");
waypoints.append(waypoint.getCoords().format(Format.LAT_LON_DECDEGREE_COMMA));
}
}
// download map images in separate background thread for higher performance
final String cacheMarkerUrl = getCacheMarkerUrl(cache);
downloadMaps(cache, cacheMarkerUrl, "", latlonMap, edge, waypoints.toString());
}
private static int guessMinDisplaySide(Activity activity) {
final Display display = ((WindowManager) activity.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
final int maxWidth = display.getWidth() - 25;
final int maxHeight = display.getHeight() - 25;
int edge = 0;
if (maxWidth > maxHeight) {
edge = maxWidth;
} else {
edge = maxHeight;
}
return edge;
}
private static void downloadMaps(final cgCache cache, final String markerUrl, final String prefix, final String latlonMap, final int edge,
final String waypoints) {
Thread staticMapsThread = new Thread("getting static map") {
@Override
public void run() {
downloadMapsInThread(cache, markerUrl, prefix, latlonMap, edge, waypoints);
}
};
staticMapsThread.setPriority(Thread.MIN_PRIORITY);
staticMapsThread.start();
}
private static String getCacheMarkerUrl(final cgCache cache) {
String type = cache.getType().id;
if (cache.isFound()) {
type += "_found";
} else if (cache.isDisabled()) {
type += "_disabled";
}
return cgBase.urlencode_rfc3986(MARKERS_URL + "marker_cache_" + type + ".png");
}
private static String getWpMarkerUrl(final cgWaypoint waypoint) {
String type = waypoint.getWaypointType() != null ? waypoint.getWaypointType().id : null;
return cgBase.urlencode_rfc3986(MARKERS_URL + "marker_waypoint_" + type + ".png");
}
public static void removeWpStaticMaps(int wp_id, String geocode) {
for (int level = 1; level <= 5; level++) {
try {
if (wp_id > 0) {
StaticMapsProvider.getMapFile(geocode, "wp" + wp_id + "_", level, false).delete();
}
} catch (Exception e) {
Log.e(Settings.tag, "StaticMapsProvider.removeWpStaticMaps: " + e.toString());
}
}
}
}
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