X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fgui%2Fmap%2FOsmMapSource.java;fp=src%2Ftim%2Fprune%2Fgui%2Fmap%2FOsmMapSource.java;h=925fcf623ea456154c512c5e5e89454eb5b46bf8;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/gui/map/OsmMapSource.java b/src/tim/prune/gui/map/OsmMapSource.java
new file mode 100644
index 0000000..925fcf6
--- /dev/null
+++ b/src/tim/prune/gui/map/OsmMapSource.java
@@ -0,0 +1,215 @@
+package tim.prune.gui.map;
+
+import java.util.regex.Matcher;
+import tim.prune.I18nManager;
+
+/**
+ * Class to provide a map source for all OSM-like sources
+ * (eg mapnik, opencyclemap, openpistemap etc).
+ * These can be single-layer or double-layer sources with tiles
+ * in various formats (default png)
+ */
+public class OsmMapSource extends MapSource
+{
+	/** Name for this source */
+	private String _name = null;
+	/** Base urls */
+	private String[] _baseUrls = null;
+	/** Site names */
+	private String[] _siteNames = null;
+	/** Maximum zoom level */
+	private int _maxZoom = 0;
+	/** API key, usually remains empty */
+	private String _apiKey = null;
+
+
+	/**
+	 * Constructor giving single name and url
+	 * @param inName source name
+	 * @param inUrl base url
+	 */
+	public OsmMapSource(String inName, String inUrl)
+	{
+		this(inName, inUrl, "png", null, null, 18);
+	}
+
+	/**
+	 * Constructor giving name, two strings and maximum zoom
+	 * @param inName source name
+	 * @param inStr1 base layer url
+	 * @param inStr2 either base layer extension or upper layer url
+	 * @param inMaxZoom maximum zoom level
+	 */
+	public OsmMapSource(String inName, String inStr1, String inStr2, int inMaxZoom)
+	{
+		if (inStr2 != null && inStr2.length() == 3)
+			init(inName, inStr1, inStr2, null, null, inMaxZoom);
+		else
+			init(inName, inStr1, "png", inStr2, "png", inMaxZoom);
+	}
+
+	/**
+	 * Constructor giving name, urls, extensions and maximum zoom
+	 * @param inName source name
+	 * @param inUrl1 base layer url
+	 * @param inExt1 extension for base layer
+	 * @param inUrl2 upper layer url
+	 * @param inExt2 extension for top layer
+	 * @param inMaxZoom maximum zoom level
+	 */
+	public OsmMapSource(String inName, String inUrl1, String inExt1,
+		String inUrl2, String inExt2, int inMaxZoom)
+	{
+		init(inName, inUrl1, inExt1, inUrl2, inExt2, inMaxZoom);
+	}
+
+	/**
+	 * Initialisation giving name, urls, extensions and maximum zoom
+	 * @param inName source name
+	 * @param inUrl1 base layer url
+	 * @param inExt1 extension for base layer
+	 * @param inUrl2 upper layer url
+	 * @param inExt2 extension for top layer
+	 * @param inMaxZoom maximum zoom level
+	 */
+	private void init(String inName, String inUrl1, String inExt1,
+		String inUrl2, String inExt2, int inMaxZoom)
+	{
+		_name = inName;
+		if (_name == null || _name.trim().equals("")) {_name = I18nManager.getText("mapsource.unknown");}
+		_baseUrls = new String[2];
+		_baseUrls[0] = fixBaseUrl(inUrl1);
+		_baseUrls[1] = fixBaseUrl(inUrl2);
+		_extensions = new String[2];
+		_extensions[0] = inExt1;
+		_extensions[1] = inExt2;
+		_siteNames = new String[2];
+		_siteNames[0] = fixSiteName(_baseUrls[0]);
+		_siteNames[1] = fixSiteName(_baseUrls[1]);
+		// Swap layers if second layer given without first
+		if (_baseUrls[0] == null && _baseUrls[1] != null)
+		{
+			_baseUrls[0] = _baseUrls[1];
+			_siteNames[0] = _siteNames[1];
+			_baseUrls[1] = _siteNames[1] = null;
+		}
+		_maxZoom = inMaxZoom;
+	}
+
+	/** Set the API key (if required) */
+	public void setApiKey(String inKey)
+	{
+		_apiKey = inKey;
+	}
+
+	/**
+	 * Construct a new map source from its config string
+	 * @param inConfigString string from Config, separated by semicolons
+	 * @return new map source, or null if not parseable
+	 */
+	public static OsmMapSource fromConfig(String inConfigString)
+	{
+		OsmMapSource source = null;
+		if (inConfigString.startsWith("o:"))
+		{
+			String[] items = inConfigString.substring(2).split(";");
+			try {
+				if (items.length == 3) { // single source url
+					source = new OsmMapSource(items[0], items[1], null, Integer.parseInt(items[2]));
+				}
+				else if (items.length == 4) { // two urls or one url plus extension
+					source = new OsmMapSource(items[0], items[1], items[2], Integer.parseInt(items[3]));
+				}
+				else if (items.length == 6) { // two urls and two extensions
+					source = new OsmMapSource(items[0], items[1], items[2], items[3], items[4], Integer.parseInt(items[5]));
+				}
+			} catch (NumberFormatException nfe) {}
+		}
+		return source;
+	}
+
+	/**
+	 * @return name
+	 */
+	public String getName() {
+		return _name;
+	}
+
+	/** Number of layers */
+	public int getNumLayers() {
+		return _baseUrls[1] == null?1:2;
+	}
+
+	/** Base url for this source */
+	public String getBaseUrl(int inLayerNum) {
+		return _baseUrls[inLayerNum];
+	}
+
+	/** site name without protocol or www. */
+	public String getSiteName(int inLayerNum) {
+		return _siteNames[inLayerNum];
+	}
+
+	/**
+	 * Make the URL to get the specified tile
+	 */
+	public String makeURL(int inLayerNum, int inZoom, int inX, int inY)
+	{
+		// Check if the base url has a [1234], if so replace at random
+		StringBuffer url = new StringBuffer();
+		url.append(pickServerUrl(_baseUrls[inLayerNum]));
+		url.append(inZoom).append('/').append(inX).append('/').append(inY);
+		url.append('.').append(getFileExtension(inLayerNum));
+		if (_apiKey != null)
+		{
+			url.append("?apikey=").append(_apiKey);
+		}
+		return url.toString();
+	}
+
+	/**
+	 * @return maximum zoom level
+	 */
+	public final int getMaxZoomLevel()
+	{
+		return _maxZoom;
+	}
+
+	/**
+	 * If the base url contains something like [1234], then pick a server
+	 * @param inBaseUrl base url
+	 * @return modified base url
+	 */
+	protected static final String pickServerUrl(String inBaseUrl)
+	{
+		if (inBaseUrl == null || inBaseUrl.indexOf('[') < 0) {
+			return inBaseUrl;
+		}
+		// Check for [.*] (once only)
+		// Only need to support one, make things a bit easier
+		final Matcher matcher = WILD_PATTERN.matcher(inBaseUrl);
+		// if not, return base url unchanged
+		if (!matcher.matches()) {
+			return inBaseUrl;
+		}
+		// if so, pick one at random and replace in the String
+		final String match = matcher.group(2);
+		final int numMatches = match.length();
+		String server = null;
+		if (numMatches > 0)
+		{
+			int matchNum = (int) Math.floor(Math.random() * numMatches);
+			server = "" + match.charAt(matchNum);
+		}
+		final String result = matcher.group(1) + (server==null?"":server) + matcher.group(3);
+		return result;
+	}
+
+	/**
+	 * @return semicolon-separated list of all fields
+	 */
+	public String getConfigString()
+	{
+		return "o:" +  getName() + ";" + getSiteStrings() + getMaxZoomLevel();
+	}
+}