/[schmitzm]/trunk/src/skrueger/geotools/LegendIconFeatureRenderer.java
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revision 918 by alfonx, Wed Jun 30 15:04:30 2010 UTC revision 1273 by alfonx, Mon Nov 15 16:22:47 2010 UTC
# Line 29  Line 29 
29   ******************************************************************************/   ******************************************************************************/
30  /**  /**
31   Copyright 2008 Stefan Alfons Tzeggai and parts from some Geotools code     Copyright 2008 Stefan Alfons Tzeggai and parts from some Geotools code  
32    
33   atlas-framework - This file is part of the Atlas Framework   atlas-framework - This file is part of the Atlas Framework
34    
35   This library 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 2.1 of the License, or (at your option) any later version.   This library 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 2.1 of the License, or (at your option) any later version.
# Line 48  import java.awt.Graphics2D; Line 48  import java.awt.Graphics2D;
48  import java.awt.RenderingHints;  import java.awt.RenderingHints;
49  import java.awt.image.BufferedImage;  import java.awt.image.BufferedImage;
50    
 import javax.swing.tree.DefaultTreeCellRenderer;  
   
51  import org.apache.log4j.Logger;  import org.apache.log4j.Logger;
52  import org.geotools.factory.GeoTools;  import org.geotools.factory.GeoTools;
53  import org.geotools.factory.Hints;  import org.geotools.factory.Hints;
 import org.geotools.feature.IllegalAttributeException;  
54  import org.geotools.geometry.jts.LiteShape2;  import org.geotools.geometry.jts.LiteShape2;
55  import org.geotools.renderer.lite.StyledShapePainter;  import org.geotools.renderer.lite.StyledShapePainter;
56  import org.geotools.renderer.style.SLDStyleFactory;  import org.geotools.renderer.style.SLDStyleFactory;
# Line 67  import org.geotools.styling.Style; Line 64  import org.geotools.styling.Style;
64  import org.geotools.styling.Symbolizer;  import org.geotools.styling.Symbolizer;
65  import org.geotools.styling.TextSymbolizer;  import org.geotools.styling.TextSymbolizer;
66  import org.geotools.util.NumberRange;  import org.geotools.util.NumberRange;
67    import org.opengis.feature.IllegalAttributeException;
68  import org.opengis.feature.simple.SimpleFeature;  import org.opengis.feature.simple.SimpleFeature;
69  import org.opengis.feature.simple.SimpleFeatureType;  import org.opengis.feature.simple.SimpleFeatureType;
70  import org.opengis.feature.type.AttributeDescriptor;  import org.opengis.feature.type.AttributeDescriptor;
# Line 83  import com.vividsolutions.jts.geom.Polyg Line 81  import com.vividsolutions.jts.geom.Polyg
81   * Based on geoserver!   * Based on geoserver!
82   * <hr>   * <hr>
83   * <b>Changes by <a href="mailto:[email protected]">Martin Schmitz</a></b>   * <b>Changes by <a href="mailto:[email protected]">Martin Schmitz</a></b>
  * <br>  
  * <ul>  
84   * <li>07.02.2008:<br>   * <li>07.02.2008:<br>
85   * Determining the default values of a {@link SimpleFeatureType} by   * Determining the default values of a {@link SimpleFeatureType} by
86   * {@link FeatureUtil#getDefaultAttributeValues(SimpleFeatureType)} instead of using   * {@link FeatureUtil#getDefaultAttributeValues(SimpleFeatureType)} instead of
87   * {@link AttributeDescriptor#createDefaultValue()} directly, because the latter   * using {@link AttributeDescriptor#createDefaultValue()} directly, because the
88   * returns {@code null} even though the attribut is not nillable.</li>   * latter returns {@code null} even though the attribut is not nillable.</li>
89   * </ul>   * </ul>
90   *   *
91   * @author Stefan Alfons Tzeggai   * @author Stefan Alfons Tzeggai
92   */   */
93  public class LegendIconFeatureRenderer extends DefaultTreeCellRenderer {  public class LegendIconFeatureRenderer {
94  //      private static final Dimension SIZE = new Dimension(30,20);          // private static final Dimension SIZE = new Dimension(30,20);
95    
96          Logger LOGGER = Logger.getLogger(LegendIconFeatureRenderer.class);          Logger LOGGER = Logger.getLogger(LegendIconFeatureRenderer.class);
97    
# Line 108  public class LegendIconFeatureRenderer e Line 104  public class LegendIconFeatureRenderer e
104          final static LegendIconFeatureRenderer instance = new LegendIconFeatureRenderer();          final static LegendIconFeatureRenderer instance = new LegendIconFeatureRenderer();
105    
106          public static LegendIconFeatureRenderer getInstance() {          public static LegendIconFeatureRenderer getInstance() {
107                  // In GT 2.4.5 it we have to create a new one all the time!                  return instance;
                   
                 // TODO TEST, whether we still need to recreate the renderer here....  
                 // TODO TEST, whether we still need to recreate the renderer here....  
                 // TODO TEST, whether we still need to recreate the renderer here....  
                 // TODO TEST, whether we still need to recreate the renderer here....  
                 // TODO TEST, whether we still need to recreate the renderer here....  
                 // TODO TEST, whether we still need to recreate the renderer here....  
                 // TODO TEST, whether we still need to recreate the renderer here....  
                 // TODO TEST, whether we still need to recreate the renderer here....  
                 return new LegendIconFeatureRenderer();  
 //               return instance;  
108          }          }
109    
110          /**          /**
# Line 155  public class LegendIconFeatureRenderer e Line 140  public class LegendIconFeatureRenderer e
140          private Hints hints;          private Hints hints;
141    
142          /**          /**
143           * Returns a <code>java.awt.Shape</code> appropiate to render a legend           * Returns a <code>java.awt.Shape</code> appropriate to render a legend
144           * graphic given the symbolizer type and the legend dimensions.           * graphic given the symbolizer type and the legend dimensions.
145           *           *
146           * @param symbolizer           * @param symbolizer
# Line 169  public class LegendIconFeatureRenderer e Line 154  public class LegendIconFeatureRenderer e
154           *         symbolizer, wether it is a LineSymbolizer, a PolygonSymbolizer,           *         symbolizer, wether it is a LineSymbolizer, a PolygonSymbolizer,
155           *         or a Point ot Text Symbolizer           *         or a Point ot Text Symbolizer
156           *           *
          * @throws IllegalArgumentException  
          *             if an unknown symbolizer impl was passed in.  
157           */           */
158          private LiteShape2 getSampleShape(Symbolizer symbolizer, int legendWidth,          private LiteShape2 getSampleShape(Symbolizer symbolizer, int legendWidth,
159                          int legendHeight) {                          int legendHeight) {
# Line 222  public class LegendIconFeatureRenderer e Line 205  public class LegendIconFeatureRenderer e
205                                                  legendHeight / 2);                                                  legendHeight / 2);
206    
207                                  try {                                  try {
208                                          this.samplePoint = new LiteShape2(geomFac                                          this.samplePoint = new LiteShape2(
209                                                          .createPoint(coord), null, null, false);                                                          geomFac.createPoint(coord), null, null, false);
210                                  } catch (Exception e) {                                  } catch (Exception e) {
211                                          this.samplePoint = null;                                          this.samplePoint = null;
212                                  }                                  }
# Line 236  public class LegendIconFeatureRenderer e Line 219  public class LegendIconFeatureRenderer e
219                  }                  }
220                  return sampleShape;                  return sampleShape;
221          }          }
222            
223          /**          /**
224           * Creates a little BufferedImage that presents the Style/Symbols used by           * Creates a little BufferedImage that presents the Style/Symbols used by
225           * the {@link MapLegend} to show a legend for the {@link SimpleFeatureType}           * the {@link MapLegend} to show a legend for the {@link SimpleFeatureType}
# Line 244  public class LegendIconFeatureRenderer e Line 227  public class LegendIconFeatureRenderer e
227           * @param rule           * @param rule
228           *            {@link Rule} that provides the text and the style to present           *            {@link Rule} that provides the text and the style to present
229           * @param featureType           * @param featureType
230           *            Schema that describes the kind of the sample {@link SimpleFeature}           *            Schema that describes the kind of the sample
231           *            that will be rendered with the {@link Style}           *            {@link SimpleFeature} that will be rendered with the
232             *            {@link Style}
233           * @param bg           * @param bg
234           *            Background {@link Color} or <code>null</code>           *            Background {@link Color} or <code>null</code>
235           *           *
236           * @throws IllegalAttributeException           * @throws IllegalAttributeException
237           */           */
238          public BufferedImage createImageForRule(Rule rule, SimpleFeatureType featureType,          public BufferedImage createImageForRule(Rule rule,
239                          Dimension size, Color bg) {                          SimpleFeatureType featureType, Dimension size, Color bg) {
240    
241                  Symbolizer[] symbolizers = rule.getSymbolizers();                  Symbolizer[] symbolizers = rule.getSymbolizers();
242    
# Line 273  public class LegendIconFeatureRenderer e Line 257  public class LegendIconFeatureRenderer e
257                  // Enable anti-aliasing for the legend symbols                  // Enable anti-aliasing for the legend symbols
258                  graphics.setRenderingHints(getHints());                  graphics.setRenderingHints(getHints());
259    
260                  final NumberRange<Integer> scaleRange = NumberRange.create(Integer.MAX_VALUE,Integer.MAX_VALUE);                  final NumberRange<Integer> scaleRange = NumberRange.create(
261                                    Integer.MAX_VALUE, Integer.MAX_VALUE);
262    
263                  try {                  try {
264    
# Line 289  public class LegendIconFeatureRenderer e Line 274  public class LegendIconFeatureRenderer e
274                                  // RasterSymbolizers..");                                  // RasterSymbolizers..");
275                                  // }                                  // }
276                                  // else                                  // else
277                                  final SimpleFeature sampleFeature = FeatureUtil.createSampleFeature(featureType);                                  final SimpleFeature sampleFeature = FeatureUtil
278                                                    .createSampleFeature(featureType);
279    
280                                    if (sampleFeature == null)
281                                            LOGGER.debug("sampleFeature " + sampleFeature);
282    
283                                  // The SLDStyleFactory has to be recreated, as it seams to cache                                  // The SLDStyleFactory has to be recreated, as it seams to cache
284                                  // some stuff.                                  // some stuff.
# Line 301  public class LegendIconFeatureRenderer e Line 290  public class LegendIconFeatureRenderer e
290                                                  size.height);                                                  size.height);
291    
292                                  if (style2d != null) {                                  if (style2d != null) {
293                                          new StyledShapePainter(null).paint(graphics, shape,                                          StyledShapePainter styledShapePainter = new StyledShapePainter(
294                                                          style2d, Integer.MAX_VALUE );                                                          null);
295                                            styledShapePainter.paint(graphics, shape, style2d,
296                                                            Integer.MAX_VALUE);
297                                  }                                  }
298                          }                          }
299                  } catch (Exception e) {                  } catch (Exception e) {
300                          LOGGER                          LOGGER.error(
301                                          .error(                                          "Error during createImageForRule, returning empty Image", e);
                                                         "Error during createImageForRule, returning empty Image",  
                                                         e);  
302                  }                  }
303                  return buffImage;                  return buffImage;
304          }          }
# Line 318  public class LegendIconFeatureRenderer e Line 307  public class LegendIconFeatureRenderer e
307           * Define Java2D and other Hints           * Define Java2D and other Hints
308           *           *
309           * @param hints           * @param hints
310           * @author <a href="mailto:[email protected]">Stefan Alfons           * @author <a href="mailto:[email protected]">Stefan Alfons Tzeggai</a>
          *         Tzeggai</a>  
311           */           */
312          public void setHints(Hints hints) {          public void setHints(Hints hints) {
313                  getHints().add(hints);                  getHints().add(hints);
# Line 349  public class LegendIconFeatureRenderer e Line 337  public class LegendIconFeatureRenderer e
337           * @param rule           * @param rule
338           *            {@link Rule} that provides the text and the style to present           *            {@link Rule} that provides the text and the style to present
339           * @param featureType           * @param featureType
340           *            Schema that describes the kind of the sample {@link SimpleFeature}           *            Schema that describes the kind of the sample
341           *            that will be rendered with the {@link Style}           *            {@link SimpleFeature} that will be rendered with the
342             *            {@link Style}
343           *           *
344           * @throws IllegalAttributeException           * @throws IllegalAttributeException
345           */           */
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