--- /dev/null
+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();
+ }
+}
projects / GpsPrune.git / blobdiff