clean up static maps provider, remove unused class

1 files changed, 182 insertions, 0 deletions

diff --git a/src/cgeo/geocaching/StaticMapsProvider.java b/src/cgeo/geocaching/StaticMapsProvider.java
new file mode 100644
index 0000000..b649f7b
--- /dev/null
+++ b/src/cgeo/geocaching/StaticMapsProvider.java
@@ -0,0 +1,182 @@
+package cgeo.geocaching;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Locale;
+
+import org.apache.http.HttpEntity;
+import org.apache.http.HttpResponse;
+import org.apache.http.client.HttpClient;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.entity.BufferedHttpEntity;
+import org.apache.http.impl.client.DefaultHttpClient;
+
+import android.app.Activity;
+import android.content.Context;
+import android.util.Log;
+import android.view.Display;
+import android.view.WindowManager;
+
+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;
+
+	private static void downloadMapsInThread(final cgCache cache, String latlonMap, int edge, String waypoints) {
+		createStorageDirectory(cache);
+		
+		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 createStorageDirectory(final cgCache cache) {
+		File dir = new File(cgSettings.getStorage());
+		if (dir.exists() == false) {
+			dir.mkdirs();
+		}
+		dir = new File(getStaticMapsDirectory(cache));
+		if (dir.exists() == false) {
+			dir.mkdirs();
+		}
+	}
+
+	private static String getStaticMapsDirectory(final cgCache cache) {
+		return cgSettings.getStorage() + cache.geocode;
+	}
+
+	private static void downloadMap(cgCache cache, int zoom, String mapType, int level, String latlonMap, int edge, String waypoints) {
+		String mapUrl = "http://maps.google.com/maps/api/staticmap?center=" + latlonMap;
+		String markerUrl = getMarkerUrl(cache);
+		
+		String url = mapUrl + "&zoom=" + zoom + "&size=" + edge + "x" + edge + "&maptype=" + mapType + "&markers=icon%3A" + markerUrl + "%7C" + latlonMap + waypoints + "&sensor=false";
+
+		final String fileName = getStaticMapsDirectory(cache) + "/map_" + level;
+		HttpClient client = null;
+		HttpGet getMethod = null;
+		HttpResponse httpResponse = null;
+		HttpEntity entity = null;
+		BufferedHttpEntity bufferedEntity = null;
+
+		boolean ok = false;
+
+		for (int i = 0; i < 3; i ++) {
+			if (i > 0) Log.w(cgSettings.tag, "cgMapImg.getDrawable: Failed to download data, retrying. Attempt #" + (i + 1));
+
+			try {
+				client = new DefaultHttpClient();
+				getMethod = new HttpGet(url);
+				httpResponse = client.execute(getMethod);
+				entity = httpResponse.getEntity();
+
+				// if image is to small, don't download and save, there is no map data for this zoom level
+				long contentSize = entity.getContentLength();
+				if (contentSize > 0 && contentSize <= MIN_MAP_IMAGE_BYTES) {
+					break;
+				}
+
+				bufferedEntity = new BufferedHttpEntity(entity);
+				if (bufferedEntity != null) {
+					InputStream is = (InputStream)bufferedEntity.getContent();
+					FileOutputStream fos = new FileOutputStream(fileName);
+
+					int fileSize = 0;
+					try {
+						byte[] buffer = new byte[4096];
+						int bytesRead;
+						while ((bytesRead = is.read(buffer)) != -1) {
+							fos.write(buffer, 0, bytesRead);
+							fileSize += bytesRead;
+						}
+						fos.flush();
+						ok = true;
+					} catch (IOException e) {
+						Log.e(cgSettings.tag, "cgMapImg.getDrawable (saving to cache): " + e.toString());
+					} finally {
+						is.close();
+						fos.close();
+					}
+
+					bufferedEntity = null;
+
+					// delete image if it has no contents
+					if (ok && fileSize < MIN_MAP_IMAGE_BYTES) {
+						(new File(fileName)).delete();
+					}
+				}
+
+				if (ok) {
+					break;
+				}
+			} catch (Exception e) {
+				Log.e(cgSettings.tag, "cgMapImg.getDrawable (downloading from web): " + e.toString());
+			}
+		}
+	}
+
+	public static void downloadMaps(cgCache cache, cgSettings settings, Activity activity) {
+		if (settings.storeOfflineMaps != 1 || cache.latitude == null
+				|| cache.longitude == null || cache.geocode == null || cache.geocode.length() == 0) {
+			return;
+		}
+		
+		final String latlonMap = String.format((Locale) null, "%.6f", cache.latitude) + "," + String.format((Locale) null, "%.6f", cache.longitude);
+		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 (cache.waypoints != null && cache.waypoints.size() > 0) {
+			for (cgWaypoint waypoint : cache.waypoints) {
+				if (waypoint.latitude == null && waypoint.longitude == null) {
+					continue;
+				}
+
+				waypoints.append("&markers=icon%3A" + MARKERS_URL + "marker_waypoint_");
+				waypoints.append(waypoint.type);
+				waypoints.append(".png%7C");
+				waypoints.append(String.format((Locale) null, "%.6f", waypoint.latitude));
+				waypoints.append(",");
+				waypoints.append(String.format((Locale) null, "%.6f", waypoint.longitude));
+			}
+		}
+
+		// 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");
+	}
+}