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**/ |
**/ |
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package skrueger.geotools; |
package skrueger.geotools; |
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import java.awt.Canvas; |
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import java.awt.Color; |
import java.awt.Color; |
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import java.awt.Dimension; |
import java.awt.Dimension; |
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import java.awt.FontMetrics; |
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import java.awt.Graphics; |
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import java.awt.Graphics2D; |
import java.awt.Graphics2D; |
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import java.awt.RenderingHints; |
import java.awt.RenderingHints; |
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import java.awt.image.BufferedImage; |
import java.awt.image.BufferedImage; |
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import java.awt.image.ImageObserver; |
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import java.util.ArrayList; |
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import java.util.List; |
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import javax.swing.tree.DefaultTreeCellRenderer; |
import javax.swing.tree.DefaultTreeCellRenderer; |
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import org.apache.log4j.Logger; |
import org.apache.log4j.Logger; |
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import org.geotools.factory.GeoTools; |
import org.geotools.factory.GeoTools; |
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import org.geotools.factory.Hints; |
import org.geotools.factory.Hints; |
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import org.geotools.feature.AttributeType; |
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import org.geotools.feature.IllegalAttributeException; |
import org.geotools.feature.IllegalAttributeException; |
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import org.geotools.geometry.jts.LiteShape2; |
import org.geotools.geometry.jts.LiteShape2; |
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import org.geotools.renderer.lite.StyledShapePainter; |
import org.geotools.renderer.lite.StyledShapePainter; |
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import org.geotools.util.NumberRange; |
import org.geotools.util.NumberRange; |
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import org.opengis.feature.simple.SimpleFeature; |
import org.opengis.feature.simple.SimpleFeature; |
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import org.opengis.feature.simple.SimpleFeatureType; |
import org.opengis.feature.simple.SimpleFeatureType; |
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import org.opengis.feature.type.AttributeDescriptor; |
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import schmitzm.geotools.feature.FeatureUtil; |
import schmitzm.geotools.feature.FeatureUtil; |
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* <li>07.02.2008:<br> |
* <li>07.02.2008:<br> |
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* Determining the default values of a {@link SimpleFeatureType} by |
* Determining the default values of a {@link SimpleFeatureType} by |
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* {@link FeatureUtil#getDefaultAttributeValues(SimpleFeatureType)} instead of using |
* {@link FeatureUtil#getDefaultAttributeValues(SimpleFeatureType)} instead of using |
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* {@link AttributeType#createDefaultValue()} directly, because the latter |
* {@link AttributeDescriptor#createDefaultValue()} directly, because the latter |
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* returns {@code null} even though the attribut is not nillable.</li> |
* returns {@code null} even though the attribut is not nillable.</li> |
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* </ul> |
* </ul> |
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* |
* |
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* @author Stefan Alfons Krüger |
* @author Stefan Alfons Krüger |
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*/ |
*/ |
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public class LegendIconFeatureRenderer extends DefaultTreeCellRenderer { |
public class LegendIconFeatureRenderer extends DefaultTreeCellRenderer { |
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private static final Dimension SIZE = new Dimension(30,20); |
// private static final Dimension SIZE = new Dimension(30,20); |
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Logger LOGGER = Logger.getLogger(LegendIconFeatureRenderer.class); |
Logger LOGGER = Logger.getLogger(LegendIconFeatureRenderer.class); |
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public static LegendIconFeatureRenderer getInstance() { |
public static LegendIconFeatureRenderer getInstance() { |
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// In GT 2.4.5 it we have to create a new one all the time! |
// In GT 2.4.5 it we have to create a new one all the time! |
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// TODO TEST, whether we still need to recreate the renderer here.... |
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return new LegendIconFeatureRenderer(); |
return new LegendIconFeatureRenderer(); |
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// return instance; |
// return instance; |
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} |
} |
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/** The image produced at <code>produceLegendGraphic</code> */ |
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private BufferedImage legendGraphic; |
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/** |
/** |
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* used to create sample point shapes with LiteShape (not lines nor |
* used to create sample point shapes with LiteShape (not lines nor |
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* polygons) |
* polygons) |
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*/ |
*/ |
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private static final GeometryFactory geomFac = new GeometryFactory(); |
private static final GeometryFactory geomFac = FeatureUtil.GEOMETRY_FACTORY; |
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/** padding percentage factor at both sides of the legend. */ |
/** padding percentage factor at both sides of the legend. */ |
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private static final float hpaddingFactor = 0.11f; // was 0.15 |
private static final float hpaddingFactor = 0.11f; // was 0.15 |
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private static final float vpaddingFactor = 0.08f; // was 0.15 |
private static final float vpaddingFactor = 0.08f; // was 0.15 |
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/** |
/** |
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* Image observer to help in creating the stack like legend graphic from the |
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* images created for each rule |
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*/ |
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private static final ImageObserver imgObs = new Canvas(); |
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/** |
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* Just a holder to avoid creating many polygon shapes from inside |
* Just a holder to avoid creating many polygon shapes from inside |
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* <code>getSampleShape()</code> |
* <code>getSampleShape()</code> |
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*/ |
*/ |
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return sampleShape; |
return sampleShape; |
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} |
} |
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// |
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/** |
// /** |
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* Puts a BufferedImage into this.legendGraphic |
// * Puts a BufferedImage into this.legendGraphic |
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*/ |
// */ |
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public void produceLegendGraphic(SimpleFeatureType featureType, Style gt2Style, |
// public void produceLegendGraphic(SimpleFeatureType featureType, Style gt2Style, |
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Rule[] applicableRules) { |
// Rule[] applicableRules) { |
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// |
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// final FeatureTypeStyle[] ftStyles = gt2Style.getFeatureTypeStyles(); |
// // final FeatureTypeStyle[] ftStyles = gt2Style.getFeatureTypeStyles(); |
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// |
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// if (request.getRule() != null) { |
// // if (request.getRule() != null) { |
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// applicableRules = new Rule[] { request.getRule() }; |
// // applicableRules = new Rule[] { request.getRule() }; |
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// } else { |
// // } else { |
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// applicableRules = getApplicableRules(ftStyles, scaleDenominator); |
// // applicableRules = getApplicableRules(ftStyles, scaleDenominator); |
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// } |
// // } |
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// |
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final int ruleCount = applicableRules.length; |
// final int ruleCount = applicableRules.length; |
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// |
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/** |
// /** |
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* A legend graphic is produced for each applicable rule. They're being |
// * A legend graphic is produced for each applicable rule. They're being |
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* holded here until the process is done and then painted on a "stack" |
// * holded here until the process is done and then painted on a "stack" |
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* like legend. |
// * like legend. |
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*/ |
// */ |
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final List<BufferedImage> legendsStack = new ArrayList<BufferedImage>( |
// final List<BufferedImage> legendsStack = new ArrayList<BufferedImage>( |
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ruleCount); |
// ruleCount); |
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// |
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for (int i = 0; i < ruleCount; i++) { |
// for (int i = 0; i < ruleCount; i++) { |
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BufferedImage image = createImageForRule(applicableRules[i], |
// BufferedImage image = createImageForRule(applicableRules[i], |
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featureType, SIZE); |
// featureType, SIZE); |
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legendsStack.add(image); |
// legendsStack.add(image); |
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} |
// } |
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// |
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// this.legendGraphic = |
// // this.legendGraphic = |
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// scaleImage(mergeLegends(legendsStack,applicableRules), request); |
// // scaleImage(mergeLegends(legendsStack,applicableRules), request); |
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this.legendGraphic = mergeLegends(legendsStack, applicableRules); |
// this.legendGraphic = mergeLegends(legendsStack, applicableRules); |
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} |
// } |
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// |
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/** |
// /** |
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* Recieves a list of <code>BufferedImages</code> and produces a new one |
// * Recieves a list of <code>BufferedImages</code> and produces a new one |
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* which holds all the images in <code>imageStack</code> one above the |
// * which holds all the images in <code>imageStack</code> one above the |
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* other. |
// * other. |
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* |
// * |
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* @param imageStack |
// * @param imageStack |
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* the list of BufferedImages, one for each applicable Rule |
// * the list of BufferedImages, one for each applicable Rule |
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* @param rules |
// * @param rules |
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* The applicable rules, one for each image in the stack |
// * The applicable rules, one for each image in the stack |
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* @param request |
// * @param request |
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* The request. |
// * The request. |
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* |
// * |
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* @return the stack image with all the images on the argument list. |
// * @return the stack image with all the images on the argument list. |
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* |
// * |
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* @throws IllegalArgumentException |
// * @throws IllegalArgumentException |
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* if the list is empty |
// * if the list is empty |
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*/ |
// */ |
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private static BufferedImage mergeLegends(List<BufferedImage> imageStack, |
// private static BufferedImage mergeLegends(List<BufferedImage> imageStack, |
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Rule[] rules) { |
// Rule[] rules) { |
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if (imageStack.size() == 0) { |
// if (imageStack.size() == 0) { |
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throw new IllegalArgumentException("No legend graphics passed"); |
// throw new IllegalArgumentException("No legend graphics passed"); |
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} |
// } |
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// |
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BufferedImage finalLegend = null; |
// BufferedImage finalLegend = null; |
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// |
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if (imageStack.size() == 1) { |
// if (imageStack.size() == 1) { |
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finalLegend = (BufferedImage) imageStack.get(0); |
// finalLegend = (BufferedImage) imageStack.get(0); |
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} else { |
// } else { |
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final int imgCount = imageStack.size(); |
// final int imgCount = imageStack.size(); |
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final String[] labels = new String[imgCount]; |
// final String[] labels = new String[imgCount]; |
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// |
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BufferedImage img = ((BufferedImage) imageStack.get(0)); |
// BufferedImage img = ((BufferedImage) imageStack.get(0)); |
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FontMetrics fontMetrics = img.getGraphics().getFontMetrics(); |
// FontMetrics fontMetrics = img.getGraphics().getFontMetrics(); |
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// |
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final int rowHeight = Math.max(fontMetrics.getHeight(), img |
// final int rowHeight = Math.max(fontMetrics.getHeight(), img |
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.getHeight()); |
// .getHeight()); |
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// |
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// calculate the total dimensions of the image |
// // calculate the total dimensions of the image |
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int totalHeight = rowHeight * imgCount; |
// int totalHeight = rowHeight * imgCount; |
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int totalWidth = 0; |
// int totalWidth = 0; |
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// |
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for (int i = 0; i < imgCount; i++) { |
// for (int i = 0; i < imgCount; i++) { |
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img = (BufferedImage) imageStack.get(i); |
// img = (BufferedImage) imageStack.get(i); |
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// |
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Rule rule = rules[i]; |
// Rule rule = rules[i]; |
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// |
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// does this rule have a label |
// // does this rule have a label |
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labels[i] = rule.getTitle(); |
// labels[i] = rule.getTitle(); |
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// |
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if (labels[i] == null) { |
// if (labels[i] == null) { |
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labels[i] = rule.getName(); |
// labels[i] = rule.getName(); |
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} |
// } |
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// |
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int w = img.getWidth(); |
// int w = img.getWidth(); |
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// |
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if (labels[i] != null) { |
// if (labels[i] != null) { |
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Graphics g = img.getGraphics(); |
// Graphics g = img.getGraphics(); |
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w += g.getFontMetrics().stringWidth(labels[i]); |
// w += g.getFontMetrics().stringWidth(labels[i]); |
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} |
// } |
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// |
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totalWidth = Math.max(w, totalWidth); |
// totalWidth = Math.max(w, totalWidth); |
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} |
// } |
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// |
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// create the final image |
// // create the final image |
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finalLegend = new BufferedImage(totalWidth, totalHeight, |
// finalLegend = new BufferedImage(totalWidth, totalHeight, |
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BufferedImage.TYPE_INT_ARGB); |
// BufferedImage.TYPE_INT_ARGB); |
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// |
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Graphics2D finalGraphics = finalLegend.createGraphics(); |
// Graphics2D finalGraphics = finalLegend.createGraphics(); |
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// |
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finalGraphics.setColor(Color.white); |
// finalGraphics.setColor(Color.white); |
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finalGraphics.fillRect(0, 0, totalWidth, totalHeight); |
// finalGraphics.fillRect(0, 0, totalWidth, totalHeight); |
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// |
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int h = 0; |
// int h = 0; |
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// |
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for (int i = 0; i < imgCount; i++) { |
// for (int i = 0; i < imgCount; i++) { |
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img = (BufferedImage) imageStack.get(i); |
// img = (BufferedImage) imageStack.get(i); |
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// |
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// draw the image |
// // draw the image |
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int y = h; |
// int y = h; |
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// |
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if (img.getHeight() < rowHeight) { |
// if (img.getHeight() < rowHeight) { |
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// move the image to the center of the row |
// // move the image to the center of the row |
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y += (int) ((rowHeight - img.getHeight()) / 2d); |
// y += (int) ((rowHeight - img.getHeight()) / 2d); |
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} |
// } |
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// |
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finalGraphics.drawImage(img, 0, y, imgObs); |
// finalGraphics.drawImage(img, 0, y, imgObs); |
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// |
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// draw the label |
// // draw the label |
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if (labels[i] != null) { |
// if (labels[i] != null) { |
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finalGraphics.setColor(Color.BLACK); |
// finalGraphics.setColor(Color.BLACK); |
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// |
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y = (h + rowHeight) - fontMetrics.getDescent(); |
// y = (h + rowHeight) - fontMetrics.getDescent(); |
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// |
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if (fontMetrics.getHeight() < rowHeight) { |
// if (fontMetrics.getHeight() < rowHeight) { |
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// move the baseline to the center of the row |
// // move the baseline to the center of the row |
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y -= (int) ((rowHeight - fontMetrics.getHeight()) / 2d); |
// y -= (int) ((rowHeight - fontMetrics.getHeight()) / 2d); |
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} |
// } |
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// |
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finalGraphics.drawString(labels[i], img.getWidth(), y); |
// finalGraphics.drawString(labels[i], img.getWidth(), y); |
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} |
// } |
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// |
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h += rowHeight; |
// h += rowHeight; |
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} |
// } |
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} |
// } |
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// |
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return finalLegend; |
// return finalLegend; |
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} |
// } |
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// |
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/** |
// /** |
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* DOCUMENT ME! |
// * DOCUMENT ME! |
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* |
// * |
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* @return |
// * @return |
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* |
// * |
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* @throws IllegalStateException |
// * @throws IllegalStateException |
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* DOCUMENT ME! |
// * DOCUMENT ME! |
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*/ |
// */ |
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public BufferedImage getLegendGraphic() { |
// public BufferedImage getLegendGraphic() { |
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if (this.legendGraphic == null) { |
// if (this.legendGraphic == null) { |
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throw new IllegalStateException(); |
// throw new IllegalStateException(); |
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} |
// } |
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return this.legendGraphic; |
// return this.legendGraphic; |
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} |
// } |
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// /** |
// /** |
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// * Paints a little rectangle in the color defined by the |
// * Paints a little rectangle in the color defined by the |