--- trunk/src/skrueger/RasterLegendData.java	2009/07/31 14:43:47	256
+++ branches/1.0-gt2-2.6/src/skrueger/RasterLegendData.java	2009/09/14 11:42:49	398
@@ -32,9 +32,17 @@
 import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Map;
+import java.util.SortedMap;
+import java.util.TreeMap;
 
 import org.apache.log4j.Logger;
+import org.geotools.coverage.grid.GridCoverage2D;
+import org.geotools.geometry.Envelope2D;
+import org.geotools.renderer.lite.gridcoverage2d.GridCoverageRenderer;
 
+import schmitzm.geotools.GTUtil;
+import schmitzm.geotools.grid.GridUtil;
 import skrueger.i8n.Translation;
 
 /**
@@ -44,7 +52,7 @@
  * @author <a href="mailto:skpublic@wikisquare.de">Stefan Alfons Kr&uuml;ger</a>
  *
  */
-public class RasterLegendData extends HashMap<Double, Translation> {
+public class RasterLegendData extends TreeMap<Double, Translation> {
 	static private final Logger LOGGER = Logger.getLogger(RasterLegendData.class);
 	private Boolean paintGaps = false;
 
@@ -61,7 +69,6 @@
 	 * indicating nominal values in the raster (e.g. classifications)
 	 */
 	public RasterLegendData(boolean paintGaps) {
-		super();
 		this.paintGaps = paintGaps;
 	}
 
@@ -69,17 +76,38 @@
 		return paintGaps ;
 	}
 
-	public List<Double> getSortedKeys(){
-		Object[] array = keySet().toArray();
-
-		Arrays.sort(array);
-
-		final LinkedList<Double> linkedList = new LinkedList<Double>();
-		for (Object o : array){
-			linkedList.add( (Double)o);
-		}
-
-		return linkedList;
-
-	}
+//	public List<Double> getSortedKeys(){
+//		Object[] array = keySet().toArray();
+//
+//		Arrays.sort(array);
+//
+//		final LinkedList<Double> linkedList = new LinkedList<Double>();
+//		for (Object o : array){
+//			linkedList.add( (Double)o);
+//		}
+//
+//		return linkedList;
+//
+//	}
+
+    /**
+     * Creates a sample {@link GridCoverage2D} (size 1x1, WGS84) for each
+     * legend value.  These rasters can be used to do visualize the
+     * legend item in the corresponding color via {@link GridCoverageRenderer}.
+     */
+    public SortedMap<Double, GridCoverage2D> createSampleRasters() {
+      SortedMap<Double, GridCoverage2D> sampleRaster = new TreeMap<Double, GridCoverage2D>();
+      
+      for (Double rasterValue : keySet()) {
+        GridCoverage2D grid = GridUtil.GRID_FAC.create(
+            "Legend_"+rasterValue,
+            new float[][] { { rasterValue.floatValue() } },
+            new Envelope2D(GTUtil.WGS84, 0,0,1,1)
+        );
+        sampleRaster.put(rasterValue, grid);
+      }
+      
+      
+      return sampleRaster;
+    }
 }