src/skrueger/RasterLegendData.java

/*******************************************************************************
 * Copyright (c) 2009 Martin O. J. Schmitz.
 * 
 * This file is part of the SCHMITZM library - a collection of utility 
 * classes based on Java 1.6, focusing (not only) on Java Swing 
 * and the Geotools library.
 * 
 * The SCHMITZM project is hosted at:
 * http://wald.intevation.org/projects/schmitzm/
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License (license.txt)
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 * or try this link: http://www.gnu.org/licenses/lgpl.html
 * 
 * Contributors:
 *     Martin O. J. Schmitz - initial API and implementation
 *     Stefan A. Krüger - additional utility classes
 ******************************************************************************/
package skrueger;
import java.util.Arrays;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

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;

/**
 * Holds all the additional information needed to paint a Legend for a RasterLayer.
 * So far, only Legends for one-band raster layers are supported.
 *
 * @author <a href="mailto:[email protected]">Stefan Alfons Kr&uuml;ger</a>
 *
 */
public class RasterLegendData extends HashMap<Double, Translation> {
        static private final Logger LOGGER = Logger.getLogger(RasterLegendData.class);
        private Boolean paintGaps = false;

        public Boolean isPaintGaps() {
                return paintGaps;
        }

        public void setPaintGaps(boolean paintPaps) {
                this.paintGaps = paintPaps;
        }

        /**
         * {@link #paintGaps} defines, if gaps should be painted between the legends colors,
         * indicating nominal values in the raster (e.g. classifications)
         */
        public RasterLegendData(boolean paintGaps) {
                this.paintGaps = paintGaps;
        }

        public boolean getPaintGaps() {
                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;

        }

    /**
     * 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 Map<Double, GridCoverage2D> createSampleRasters() {
      Map<Double, GridCoverage2D> sampleRaster = new HashMap<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;
    }
}
1	/*******************************************************************************
2	* Copyright (c) 2009 Martin O. J. Schmitz.
3	*
4	* This file is part of the SCHMITZM library - a collection of utility
5	* classes based on Java 1.6, focusing (not only) on Java Swing
6	* and the Geotools library.
7	*
8	* The SCHMITZM project is hosted at:
9	* http://wald.intevation.org/projects/schmitzm/
10	*
11	* This program is free software; you can redistribute it and/or
12	* modify it under the terms of the GNU Lesser General Public License
13	* as published by the Free Software Foundation; either version 3
14	* of the License, or (at your option) any later version.
15	*
16	* This program is distributed in the hope that it will be useful,
17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19	* GNU General Public License for more details.
20	*
21	* You should have received a copy of the GNU Lesser General Public License (license.txt)
22	* along with this program; if not, write to the Free Software
23	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24	* or try this link: http://www.gnu.org/licenses/lgpl.html
25	*
26	* Contributors:
27	* Martin O. J. Schmitz - initial API and implementation
28	* Stefan A. Krüger - additional utility classes
29	******************************************************************************/
30	package skrueger;
31	import java.util.Arrays;
32	import java.util.HashMap;
33	import java.util.LinkedList;
34	import java.util.List;
35	import java.util.Map;
36
37	import org.apache.log4j.Logger;
38	import org.geotools.coverage.grid.GridCoverage2D;
39	import org.geotools.geometry.Envelope2D;
40	import org.geotools.renderer.lite.gridcoverage2d.GridCoverageRenderer;
41
42	import schmitzm.geotools.GTUtil;
43	import schmitzm.geotools.grid.GridUtil;
44	import skrueger.i8n.Translation;
45
46	/**
47	* Holds all the additional information needed to paint a Legend for a RasterLayer.
48	* So far, only Legends for one-band raster layers are supported.
49	*
50	* @author <a href="mailto:[email protected]">Stefan Alfons Krüger</a>
51	*
52	*/
53	public class RasterLegendData extends HashMap<Double, Translation> {
54	static private final Logger LOGGER = Logger.getLogger(RasterLegendData.class);
55	private Boolean paintGaps = false;
56
57	public Boolean isPaintGaps() {
58	return paintGaps;
59	}
60
61	public void setPaintGaps(boolean paintPaps) {
62	this.paintGaps = paintPaps;
63	}
64
65	/**
66	* {@link #paintGaps} defines, if gaps should be painted between the legends colors,
67	* indicating nominal values in the raster (e.g. classifications)
68	*/
69	public RasterLegendData(boolean paintGaps) {
70	this.paintGaps = paintGaps;
71	}
72
73	public boolean getPaintGaps() {
74	return paintGaps ;
75	}
76
77	public List<Double> getSortedKeys(){
78	Object[] array = keySet().toArray();
79
80	Arrays.sort(array);
81
82	final LinkedList<Double> linkedList = new LinkedList<Double>();
83	for (Object o : array){
84	linkedList.add( (Double)o);
85	}
86
87	return linkedList;
88
89	}
90
91	/**
92	* Creates a sample {@link GridCoverage2D} (size 1x1, WGS84) for each
93	* legend value. These rasters can be used to do visualize the
94	* legend item in the corresponding color via {@link GridCoverageRenderer}.
95	*/
96	public Map<Double, GridCoverage2D> createSampleRasters() {
97	Map<Double, GridCoverage2D> sampleRaster = new HashMap<Double, GridCoverage2D>();
98
99	for (Double rasterValue : keySet()) {
100	GridCoverage2D grid = GridUtil.GRID_FAC.create(
101	"Legend_"+rasterValue,
102	new float[][] { { rasterValue.floatValue() } },
103	new Envelope2D(GTUtil.WGS84, 0,0,1,1)
104	);
105	sampleRaster.put(rasterValue, grid);
106	}
107
108
109	return sampleRaster;
110	}
111	}