X-Git-Url: https://gitweb.fperrin.net/?a=blobdiff_plain;f=tim%2Fprune%2Ffunction%2Fbrowser%2FUrlGenerator.java;fp=tim%2Fprune%2Ffunction%2Fbrowser%2FUrlGenerator.java;h=14d15776a8be3d19213cf0419ea240349146b9d6;hb=54b9d8bc8f0025ccf97a67d9dd217ef1f9cf082f;hp=0000000000000000000000000000000000000000;hpb=52bf9e8686c916be37a26a0b75340393d4478b05;p=GpsPrune.git

diff --git a/tim/prune/function/browser/UrlGenerator.java b/tim/prune/function/browser/UrlGenerator.java
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+++ b/tim/prune/function/browser/UrlGenerator.java
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+package tim.prune.function.browser;
+
+import java.text.DecimalFormat;
+import java.text.NumberFormat;
+import java.util.Locale;
+
+import tim.prune.I18nManager;
+import tim.prune.data.DataPoint;
+import tim.prune.data.DoubleRange;
+import tim.prune.data.TrackInfo;
+
+/**
+ * Class to manage the generation of map urls
+ * for display in an external browser
+ */
+public abstract class UrlGenerator
+{
+	/** Number formatter for five dp */
+	private static final NumberFormat FIVE_DP = NumberFormat.getNumberInstance(Locale.UK);
+	// Select the UK locale for this formatter so that decimal point is always used (not comma)
+	static {
+		if (FIVE_DP instanceof DecimalFormat) ((DecimalFormat) FIVE_DP).applyPattern("0.00000");
+	}
+
+	/** Constant for Google Maps */
+	public static final int MAP_SOURCE_GOOGLE = 0;
+	/** Constant for Open Street Maps */
+	public static final int MAP_SOURCE_OSM    = 1;
+	/** Constant for Mapquest */
+	public static final int MAP_SOURCE_MAPQUEST = 2;
+	/** Constant for Yahoo */
+	public static final int MAP_SOURCE_YAHOO  = 3;
+
+	// TODO: Add other map sources, eg MSN, search.ch ?
+
+	/**
+	 * Generate a URL for the given source and track info
+	 * @param inSource source to use, either google or openstreetmap
+	 * @param inTrackInfo track info
+	 * @return url for map
+	 */
+	public static String generateUrl(int inSource, TrackInfo inTrackInfo)
+	{
+		if (inSource == MAP_SOURCE_GOOGLE) {
+			return generateGoogleUrl(inTrackInfo);
+		}
+		else if (inSource == MAP_SOURCE_MAPQUEST) {
+			return generateMapquestUrl(inTrackInfo);
+		}
+		else if (inSource == MAP_SOURCE_YAHOO) {
+			return generateYahooUrl(inTrackInfo);
+		}
+		return generateOpenStreetMapUrl(inTrackInfo);
+	}
+
+	/**
+	 * Generate a url for Google maps
+	 * @param inTrackInfo track information
+	 * @return URL
+	 */
+	private static String generateGoogleUrl(TrackInfo inTrackInfo)
+	{
+		// Check if any data to display
+		if (inTrackInfo == null || inTrackInfo.getTrack() == null || inTrackInfo.getTrack().getNumPoints() < 1)
+		{
+			return null;
+		}
+		double medianLat = getMedianValue(inTrackInfo.getTrack().getLatRange());
+		double medianLon = getMedianValue(inTrackInfo.getTrack().getLonRange());
+		double latSpan = getSpan(inTrackInfo.getTrack().getLatRange());
+		double lonSpan = getSpan(inTrackInfo.getTrack().getLonRange());
+		// Build basic url with centre position and span
+		String url = "http://" + I18nManager.getText("url.googlemaps")
+			+ "/?ll=" + FIVE_DP.format(medianLat) + "," + FIVE_DP.format(medianLon)
+			+ "&spn=" + FIVE_DP.format(latSpan) + "," + FIVE_DP.format(lonSpan);
+		DataPoint currPoint = inTrackInfo.getCurrentPoint();
+		// Add selected point, if any
+		if (currPoint != null) {
+			url = url + "&q=" + FIVE_DP.format(currPoint.getLatitude().getDouble()) + ","
+				+ FIVE_DP.format(currPoint.getLongitude().getDouble());
+			if (currPoint.getWaypointName() != null) {
+				url = url + "(" + currPoint.getWaypointName() + ")";
+			}
+		}
+		//System.out.println(url);
+		return url;
+	}
+
+	/**
+	 * Generate a url for Open Street Map
+	 * @param inTrackInfo track information
+	 * @return URL
+	 */
+	private static String generateOpenStreetMapUrl(TrackInfo inTrackInfo)
+	{
+		// Check if any data to display
+		if (inTrackInfo == null || inTrackInfo.getTrack() == null || inTrackInfo.getTrack().getNumPoints() < 1)
+		{
+			return null;
+		}
+		DoubleRange latRange = inTrackInfo.getTrack().getLatRange();
+		DoubleRange lonRange = inTrackInfo.getTrack().getLonRange();
+		// Build basic url using min and max lat and long
+		String url = "http://openstreetmap.org/?minlat=" + FIVE_DP.format(latRange.getMinimum())
+			+ "&maxlat=" + FIVE_DP.format(latRange.getMaximum())
+			+ "&minlon=" + FIVE_DP.format(lonRange.getMinimum()) + "&maxlon=" + FIVE_DP.format(lonRange.getMaximum());
+		DataPoint currPoint = inTrackInfo.getCurrentPoint();
+		// Add selected point, if any (no way to add point name?)
+		if (currPoint != null) {
+			url = url + "&mlat=" + FIVE_DP.format(currPoint.getLatitude().getDouble())
+				+ "&mlon=" + FIVE_DP.format(currPoint.getLongitude().getDouble());
+		}
+		return url;
+	}
+
+	/**
+	 * Generate a url for Mapquest maps
+	 * @param inTrackInfo track information
+	 * @return URL
+	 */
+	private static String generateMapquestUrl(TrackInfo inTrackInfo)
+	{
+		// Check if any data to display
+		if (inTrackInfo == null || inTrackInfo.getTrack() == null || inTrackInfo.getTrack().getNumPoints() < 1)
+		{
+			return null;
+		}
+		double medianLat = getMedianValue(inTrackInfo.getTrack().getLatRange());
+		double medianLon = getMedianValue(inTrackInfo.getTrack().getLonRange());
+		// Build basic url with centre position
+		String url = "http://atlas.mapquest.com/maps/map.adp?latlongtype=decimal&latitude="
+			+ FIVE_DP.format(medianLat) + "&longitude=" + FIVE_DP.format(medianLon);
+		return url;
+	}
+
+
+	/**
+	 * Generate a url for Yahoo maps
+	 * @param inTrackInfo track information
+	 * @return URL
+	 */
+	private static String generateYahooUrl(TrackInfo inTrackInfo)
+	{
+		// Check if any data to display
+		if (inTrackInfo == null || inTrackInfo.getTrack() == null || inTrackInfo.getTrack().getNumPoints() < 1)
+		{
+			return null;
+		}
+		double medianLat = getMedianValue(inTrackInfo.getTrack().getLatRange());
+		double medianLon = getMedianValue(inTrackInfo.getTrack().getLonRange());
+		// Build basic url with centre position
+		String url = "http://maps.yahoo.com/#lat=" + FIVE_DP.format(medianLat)
+			+ "&lon=" + FIVE_DP.format(medianLon) + "&zoom=13";
+		return url;
+	}
+
+/**
+	 * Get the median value from the given lat/long range
+	 * @param inRange range of values
+	 * @return median value
+	 */
+	private static double getMedianValue(DoubleRange inRange)
+	{
+		return (inRange.getMaximum() + inRange.getMinimum()) / 2.0;
+	}
+
+	/**
+	 * Get the span of the given lat/long range
+	 * @param inRange range of values
+	 * @return span
+	 */
+	private static double getSpan(DoubleRange inRange)
+	{
+		return inRange.getMaximum() - inRange.getMinimum();
+	}
+}