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package cgeo.geocaching;
import cgeo.geocaching.files.LocalStorage;
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.view.Display;
import android.view.WindowManager;
import java.io.File;
import java.util.Locale;
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, final int level) {
return LocalStorage.getStorageFile(geocode, "map_" + level, false);
}
private static void downloadMapsInThread(final cgCache cache, String latlonMap, int edge, String waypoints) {
downloadMap(cache, 20, "satellite", 1, latlonMap, edge, waypoints);
downloadMap(cache, 18, "satellite", 2, latlonMap, edge, waypoints);
downloadMap(cache, 16, "roadmap", 3, latlonMap, edge, waypoints);
downloadMap(cache, 14, "roadmap", 4, latlonMap, edge, waypoints);
downloadMap(cache, 11, "roadmap", 5, latlonMap, edge, waypoints);
}
private static void downloadMap(cgCache cache, int zoom, String mapType, int level, String latlonMap, int edge, String waypoints) {
final String mapUrl = "http://maps.google.com/maps/api/staticmap?center=" + latlonMap;
final String markerUrl = getMarkerUrl(cache);
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.geocode, level);
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() || cache.coords == null || StringUtils.isBlank(cache.geocode)) {
return;
}
final String latlonMap = String.format((Locale) null, "%.6f", cache.coords.getLatitude()) + "," +
String.format((Locale) null, "%.6f", cache.coords.getLongitude());
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;
}
final StringBuilder waypoints = new StringBuilder();
if (CollectionUtils.isNotEmpty(cache.waypoints)) {
for (cgWaypoint waypoint : cache.waypoints) {
if (waypoint.coords == null) {
continue;
}
waypoints.append("&markers=icon%3A");
waypoints.append(MARKERS_URL);
waypoints.append("marker_waypoint_");
waypoints.append(waypoint.type != null ? waypoint.type.id : null);
waypoints.append(".png%7C");
waypoints.append(String.format((Locale) null, "%.6f", waypoint.coords.getLatitude()));
waypoints.append(',');
waypoints.append(String.format((Locale) null, "%.6f", waypoint.coords.getLongitude()));
}
}
// download map images in separate background thread for higher performance
downloadMaps(cache, latlonMap, edge, waypoints.toString());
}
private static void downloadMaps(final cgCache cache, final String latlonMap, final int edge,
final String waypoints) {
Thread staticMapsThread = new Thread("getting static map") {
@Override
public void run() {
downloadMapsInThread(cache, latlonMap, edge, waypoints);
}
};
staticMapsThread.setPriority(Thread.MIN_PRIORITY);
staticMapsThread.start();
}
private static String getMarkerUrl(final cgCache cache) {
String type = "mystery";
if (cache.found) {
type = cache.type + "_found";
} else if (cache.disabled) {
type = cache.type + "_disabled";
} else {
type = cache.type;
}
return cgBase.urlencode_rfc3986(MARKERS_URL + "marker_cache_" + type + ".png");
}
}
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