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package tim.prune.gui.map;
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 png tiles
*/
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;
/**
* Constructor giving single name and url
* @param inName source name
* @param inUrl base url
*/
public OsmMapSource(String inName, String inUrl)
{
this(inName, inUrl, null, 18);
}
/**
* Constructor giving name, urls and maximum zoom
* @param inName source name
* @param inUrl1 base layer url
* @param inUrl2 upper layer url
* @param inMaxZoom maximum zoom level
*/
public OsmMapSource(String inName, String inUrl1, String inUrl2, 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);
_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;
}
/**
* 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) {
source = new OsmMapSource(items[0], items[1], null, Integer.parseInt(items[2]));
}
else if (items.length == 4) {
source = new OsmMapSource(items[0], items[1], items[2], Integer.parseInt(items[3]));
}
} 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)
{
return _baseUrls[inLayerNum] + inZoom + "/" + inX + "/" + inY + getFileExtension(inLayerNum);
}
/** file extension is always png */
public final String getFileExtension(int inLayerNum) {
return ".png";
}
/**
* @return maximum zoom level
*/
public final int getMaxZoomLevel()
{
return _maxZoom;
}
/**
* @return semicolon-separated list of all fields
*/
public String getConfigString()
{
return "o:" + getName() + ";" + getSiteStrings() + getMaxZoomLevel();
}
}
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