gov.nih.nci.caintegrator.ui.graphing.util.ImageMapUtil.java Source code

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Here is the source code for gov.nih.nci.caintegrator.ui.graphing.util.ImageMapUtil.java

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/*L
 *  Copyright SAIC
 *
 *  Distributed under the OSI-approved BSD 3-Clause License.
 *  See http://ncip.github.com/stats-analysis/LICENSE.txt for details.
 */

package gov.nih.nci.caintegrator.ui.graphing.util;

import java.awt.Shape;
import java.awt.geom.Rectangle2D;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;

import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.entity.ChartEntity;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.imagemap.StandardToolTipTagFragmentGenerator;
import org.jfree.chart.imagemap.StandardURLTagFragmentGenerator;
import org.jfree.chart.imagemap.ToolTipTagFragmentGenerator;
import org.jfree.util.StringUtils;

/**
* 
* 
*/

public class ImageMapUtil {

    /**
     * Same interface as ChartUtilities.writeImageMap. This version will find the 
     * bounding rectangles for the entities in the ChartRenderingInfo object and will write those
     * to the image map.
     * @param writer
     * @param name
     * @param info
     * @param useOverlibToolTip
     */
    public static void writeBoundingRectImageMap(PrintWriter writer, String name, ChartRenderingInfo info,
            boolean useOverlibToolTip) {
        EntityCollection collection = info.getEntityCollection();
        Collection entities = collection.getEntities();

        Collection<ChartEntity> boundingEntities = getBoundingEntities(entities);
        writeBoundingRectImageMap(writer, name, boundingEntities, useOverlibToolTip);

    }

    /**
     * Write the image map for the collection of bounding entities.
     * @param writer
     * @param name
     * @param boundingEntities
     * @param useOverlibToolTip
     */
    private static void writeBoundingRectImageMap(PrintWriter writer, String name,
            Collection<ChartEntity> boundingEntities, boolean useOverlibToolTip) {
        System.out.println("Num entities=" + boundingEntities.size());
        StringBuffer sb = new StringBuffer();
        ChartEntity chartEntity;
        String areaTag;

        StandardToolTipTagFragmentGenerator ttg = new StandardToolTipTagFragmentGenerator();
        StandardURLTagFragmentGenerator urlg = new StandardURLTagFragmentGenerator();
        sb.append("<map id=\"" + name + "\" name=\"" + name + "\">");
        sb.append(StringUtils.getLineSeparator());
        for (Iterator i = boundingEntities.iterator(); i.hasNext();) {
            chartEntity = (ChartEntity) i.next();
            areaTag = chartEntity.getImageMapAreaTag(ttg, urlg).trim();
            if (areaTag.length() > 0) {
                if (sb.indexOf(chartEntity.getImageMapAreaTag(ttg, urlg)) == -1) {
                    sb.append(chartEntity.getImageMapAreaTag(ttg, urlg));
                    sb.append(StringUtils.getLineSeparator());
                }
            }
        }
        sb.append("</map>");
        writer.println(sb.toString());
    }

    public static String getBoundingRectImageMapTag(String name, boolean useOverlibToolTip,
            ChartRenderingInfo info) {
        EntityCollection collection = info.getEntityCollection();
        Collection entities = collection.getEntities();

        Collection<ChartEntity> myBoundingEntities = getBoundingEntities(entities);

        System.out.println("Num entities=" + myBoundingEntities.size());
        StringBuffer sb = new StringBuffer();
        ChartEntity chartEntity;
        String areaTag;

        ToolTipTagFragmentGenerator ttg = null;

        if (useOverlibToolTip) {
            ttg = new CAIOverlibToolTipTagFragmentGenerator();
        } else {
            ttg = new CAIStandardToolTipTagFragmentGenerator();
        }

        StandardURLTagFragmentGenerator urlg = new StandardURLTagFragmentGenerator();
        sb.append("\n\n<MAP name=\"" + name + "\">");
        sb.append(StringUtils.getLineSeparator());
        for (Iterator i = myBoundingEntities.iterator(); i.hasNext();) {
            chartEntity = (ChartEntity) i.next();
            areaTag = chartEntity.getImageMapAreaTag(ttg, urlg).trim();
            if (areaTag.length() > 0) {
                if (sb.indexOf(chartEntity.getImageMapAreaTag(ttg, urlg)) == -1) {
                    sb.append(chartEntity.getImageMapAreaTag(ttg, urlg));
                    sb.append(StringUtils.getLineSeparator());
                }
            }
        }
        sb.append("</MAP>\n\n");
        return sb.toString();
    }

    /**
     * Get a collection of entities with the area shape equal to the bounding rectangle
     * for the shape of original entity. This is necessary because the Javascript for the sample 
     * selection lasso can only handle rect objects.
     * @param entities
     * @return a collection of entities containing the bounding rectangles of the original entities
     */
    private static Collection<ChartEntity> getBoundingEntities(Collection entities) {
        ChartEntity entity;
        ChartEntity boundingEntity;
        Shape shape;
        Rectangle2D boundingRect;
        Collection<ChartEntity> boundingEntities = new ArrayList<ChartEntity>();
        for (Iterator i = entities.iterator(); i.hasNext();) {
            entity = (ChartEntity) i.next();
            shape = entity.getArea();
            boundingRect = shape.getBounds2D();
            boundingEntity = new ChartEntity(boundingRect, entity.getToolTipText(), entity.getURLText());
            boundingEntities.add(boundingEntity);
        }
        return boundingEntities;
    }

}