more work on overlay renderer:

- moved text rendering to overlay
- added grid overlay

src/org/oscim/generator/JobQueue.java

@@ -38,11 +38,10 @@ public class JobQueue {
 	 *            the job to be added to this queue.
 	 */
 	public synchronized void setJobs(ArrayList<JobTile> tiles) {
-		mPriorityQueue.clear();
-		// mPriorityQueue.addAll(tiles);
+		// mPriorityQueue.clear();
+
 		for (int i = 0, n = tiles.size(); i < n; i++) {
 			JobTile tile = tiles.get(i);
-			// tile.state = LOADING;
 			tile.isLoading = true;
 			mPriorityQueue.offer(tile);
 		}
@@ -52,11 +51,10 @@ public class JobQueue {
 	 * Removes all jobs from this queue.
 	 */
 	public synchronized void clear() {
-		for (int i = 0, n = mPriorityQueue.size(); i < n; i++) {
-			JobTile tile = mPriorityQueue.poll();
-			// tile.state = 0;
+		for (JobTile tile : mPriorityQueue) {
 			tile.isLoading = false;
 		}
+
 		mPriorityQueue.clear();
 	}
 
@@ -71,8 +69,6 @@ public class JobQueue {
 	 * @return the most important job from this queue or null, if empty.
 	 */
 	public synchronized JobTile poll() {
-		JobTile tile = mPriorityQueue.poll();
-
-		return tile;
+		return mPriorityQueue.poll();
 	}
 }

src/org/oscim/generator/MapWorker.java

@@ -61,9 +61,11 @@ public class MapWorker extends PausableThread {
 	protected void doWork() {
 		JobTile tile = mJobQueue.poll();
 
-		if (mMapGenerator == null || tile == null)
+		if (tile == null)
 			return;
 
+		// Log.d("...", "load: " + tile);
+
 		boolean success = mMapGenerator.executeJob(tile);
 
 		if (!isInterrupted() && success) {