Source Code of de.laures.cewolf.cpp.TitleEnhancer

package de.laures.cewolf.cpp;


import java.awt.Color;
import java.awt.Font;
import java.io.Serializable;
import java.util.Iterator;
import java.util.List;
import java.util.Map;


import de.laures.cewolf.ChartPostProcessor;


import org.jfree.chart.JFreeChart;
import org.jfree.chart.title.TextTitle;
import org.jfree.ui.HorizontalAlignment;


/**
* A postprocessor for setting a (sub)title on a chart. It supports the following parameters:
* <BR><b>type</b> title/subtitle; default is title
* <BR><b>title</b> no default, title won't be set if empty
* <BR><b>fontname</b> optional; default SansSerif
* <BR><b>fontsize</b> optional; default 18 for titles, 12 for subtitles
* <BR><b>paint</b> optional; default #000000 (i.e., black)
* <BR><b>backgroundpaint</b> optional; default #FFFFFF (i.e., white)
* <BR><b>bold</b> true/false; optional; default true
* <BR><b>italic</b> true/false; optional; default false
* <P>
* Usage:<P>
* &lt;chart:chartpostprocessor id="subTitle"&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="type" value="title" /&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="title" value="My Important Title" /&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="fontname" value="Serif" /&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="fontsize" value="24" /&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="paint" value="#FF8800" /&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="backgroundpaint" value="#0088FF" /&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="bold" value="false" /&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="italic" value="true" /&gt;<BR>
* &lt;/chart:chartpostprocessor&gt;
* <P>
* Based on the ExtraTitleEnhancer class from the cewolfexample web app.
*/


public class TitleEnhancer implements ChartPostProcessor, Serializable
{
  static final long serialVersionUID = 591686288142936677L;


    public void processChart (Object chart, Map params) {
    JFreeChart localChart = (JFreeChart) chart;
    String title = null;
    String type = "title";
    String fontName = "SansSerif";
    Color paint = null;
    Color backgroundPaint = null;
    int fontSize = 18;
    boolean isBold = true;
    boolean isItalic = false;
//    HorizontalAlignment align = HorizontalAlignment.CENTER;


    String typeParam = (String) params.get("type");
    if (typeParam != null && typeParam.trim().length() > 0)
      type = typeParam.trim();


    String titleParam = (String) params.get("title");
    if (titleParam != null && titleParam.trim().length() > 0)
      title = titleParam.trim();


    String fontNameParam = (String) params.get("fontname");
    if (fontNameParam != null && fontNameParam.trim().length() > 0)
      fontName = fontNameParam.trim();


    String fontSizeParam = (String) params.get("fontsize");
    if (fontSizeParam != null && fontSizeParam.trim().length() > 0) {
      try {
        fontSize = Integer.parseInt(fontSizeParam);
        if (fontSize < 1)
          fontSize = 18;
      } catch (NumberFormatException nfex) { }
    }


    String paintParam = (String) params.get("paint");
    if (paintParam != null && paintParam.trim().length() > 0) {
      try {
        paint = Color.decode(paintParam);
      } catch (NumberFormatException nfex) { }
    }


    String backgroundpaintParam = (String) params.get("backgroundpaint");
    if (backgroundpaintParam != null && backgroundpaintParam.trim().length() > 0) {
      try {
        backgroundPaint = Color.decode(backgroundpaintParam);
      } catch (NumberFormatException nfex) { }
    }


    String boldParam = (String) params.get("bold");
    if (boldParam != null)
      isBold = "true".equals(boldParam.toLowerCase());


    String italicParam = (String) params.get("italic");
    if (italicParam != null)
      isItalic = "true".equals(italicParam.toLowerCase());
/*
    String alignParam = (String) params.get("align");
    if (alignParam != null) {
      if ("left".equals(alignParam))
        align = HorizontalAlignment.LEFT;
      else if ("right".equals(alignParam))
        align = HorizontalAlignment.RIGHT;
    }
*/
    if (title != null || "title".equals(type)) {
      TextTitle tt = null;
      if ("subtitle".equals(type)) {
        // search for subtitle
        List subTitles = localChart.getSubtitles();
        Iterator iter = subTitles.iterator();
        while (iter.hasNext()) {
          Object o = iter.next();
          if (o instanceof TextTitle) {
            tt = (TextTitle) o;
            break;
          }
        }


        if (tt == null) {
          tt = new TextTitle(title);
          localChart.addSubtitle(tt);
        }
      } else {
        tt = localChart.getTitle();
      }


      Font font = new Font(fontName,
                (isBold ? Font.BOLD : 0) + (isItalic ? Font.ITALIC : 0),
                fontSize);
      tt.setFont(font);
      if (paint != null)
        tt.setPaint(paint);
      if (backgroundPaint != null)
        tt.setBackgroundPaint(backgroundPaint);
    }
  }
}
Source Code of de.laures.cewolf.cpp.TitleEnhancer

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