MapsforgeMapActivity.java

/*
 * Copyright 2014 Hannes Janetzek
 *
 * This program is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package org.oscim.android.test;

import org.oscim.android.MapView;
import org.oscim.android.filepicker.FilePicker;
import org.oscim.android.filepicker.FilterByFileExtension;
import org.oscim.android.filepicker.ValidMapFile;
import org.oscim.core.MapPosition;
import org.oscim.core.Tile;
import org.oscim.layers.tile.buildings.BuildingLayer;
import org.oscim.layers.tile.vector.VectorTileLayer;
import org.oscim.layers.tile.vector.labeling.LabelLayer;
import org.oscim.theme.VtmThemes;
import org.oscim.tiling.source.mapfile.MapFileTileSource;
import org.oscim.tiling.source.mapfile.MapInfo;

import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;

public class MapsforgeMapActivity extends MapActivity {
	private static final int SELECT_MAP_FILE = 0;

	MapView mMapView;
	MapFileTileSource mTileSource;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		startActivityForResult(new Intent(this, MapFilePicker.class),
		                       SELECT_MAP_FILE);
	}

	public static class MapFilePicker extends FilePicker {
		public MapFilePicker() {
			setFileDisplayFilter(new FilterByFileExtension(".map"));
			setFileSelectFilter(new ValidMapFile());
		}
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.theme_menu, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {

		switch (item.getItemId()) {
			case R.id.theme_default:
				mMap.setTheme(VtmThemes.DEFAULT);
				item.setChecked(true);
				return true;

			case R.id.theme_tubes:
				mMap.setTheme(VtmThemes.TRONRENDER);
				item.setChecked(true);
				return true;

			case R.id.theme_osmarender:
				mMap.setTheme(VtmThemes.OSMARENDER);
				item.setChecked(true);
				return true;
		}

		return false;
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent intent) {

		if (requestCode == SELECT_MAP_FILE) {
			if (resultCode != RESULT_OK || intent == null)
				return;
			if (intent.getStringExtra(FilePicker.SELECTED_FILE) == null)
				return;

			mTileSource = new MapFileTileSource();
			String file = intent.getStringExtra(FilePicker.SELECTED_FILE);
			if (mTileSource.setMapFile(file)) {

				VectorTileLayer l = mMap.setBaseMap(mTileSource);
				mMap.setTheme(VtmThemes.DEFAULT);

				mMap.layers().add(new BuildingLayer(mMap, l));
				mMap.layers().add(new LabelLayer(mMap, l));

				MapInfo info = mTileSource.getMapInfo();
				if (info.boundingBox != null) {
					MapPosition pos = new MapPosition();
					pos.setByBoundingBox(info.boundingBox,
					                     Tile.SIZE * 4,
					                     Tile.SIZE * 4);
					mMap.setMapPosition(pos);
					Samples.log.debug("set position {}", pos);
				} else if (info.mapCenter != null) {

					double scale = 1 << 8;
					if (info.startZoomLevel != null)
						scale = 1 << info.startZoomLevel.intValue();

					mMap.setMapPosition(info.mapCenter.getLatitude(),
					                    info.mapCenter.getLongitude(),
					                    scale);
				}
			}
		}
	}
}