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

package de.laures.cewolf.cpp;


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


import de.laures.cewolf.ChartPostProcessor;


import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.Plot;
import org.jfree.chart.plot.dial.*;


/**
* A postprocessor for changing details of a Dial plot.
* <BR><b>pointerType</b> "pin" or "pointer"; default pointer
* <BR><b>dialText</b> text to display on the dial; optional
* <BR><b>lowerBound</b> optional; default 0; starting value for the scale
* <BR><b>upperBound</b> optional; default 100; end value for the scale
* <BR><b>majorTickIncrement</b> optional; default 10; value increment between major tick marks
* <BR><b>minorTickCount</b> optional; default 4; minor tick marks to put between major tick marks
* <P>
* Usage:<P>
* &lt;chart:chartpostprocessor id="dialEnhancer"&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="pointerType" value="pin"/&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="dialText" value="(km/h)"/&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="lowerBound" value="0.1"/&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="upperBound" value="0.1"/&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="majorTickIncrement" value="20"/&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="minorTickCount" value="9"/&gt;<BR>
* &lt;/chart:chartpostprocessor&gt;
*/


// TODO: capFill, capRadius and capOutline don't work yet
/*
* <BR><b>capFill</b> optional; default #000000 (i.e., black)
* <BR><b>capOutline</b> optional; default #FFFFFF (i.e., white)
* <BR><b>capRadius</b> optional; 0.0 &lt; radius &lt; 1.0; default 0.05


* &nbsp;&nbsp;&lt;chart:param name="capFill" value="#FF8800"/&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="capOutline" value="#0088FF"/&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="capRadius" value="0.1"/&gt;<BR>
*/


public class DialEnhancer implements ChartPostProcessor, Serializable
{
  static final long serialVersionUID = 6708371054518325470L;


    public void processChart (Object chart, Map params) {
    String pointerType = "pointer";
    String dialText = null;


    Color capFillPaint = new Color(0, 0, 0);
    Color capOutlinePaint = new Color(255, 255, 255);
    double capRadius = 0.05;
    boolean setCap = false;


    double lowerBound = 0.0;
    double upperBound = 100.0;
    double majorTickIncrement = 10.0;
    int minorTickCount = 4;
    boolean setScale = false;


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


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


    str = (String) params.get("capRadius");
    if (str != null) {
      try {
        capRadius = Double.parseDouble(str);
        setCap = true;
      } catch (NumberFormatException nfex) { }
    }


    str = (String) params.get("capFill");
    if (str != null && str.trim().length() > 0) {
      try {
        capFillPaint = Color.decode(str);
        setCap = true;
      } catch (NumberFormatException nfex) { }
    }


    str = (String) params.get("capOutline");
    if (str != null && str.trim().length() > 0) {
      try {
        capOutlinePaint = Color.decode(str);
        setCap = true;
      } catch (NumberFormatException nfex) { }
    }


    str = (String) params.get("lowerBound");
    if (str != null) {
      try {
        lowerBound = Double.parseDouble(str);
        setScale = true;
      } catch (NumberFormatException nfex) { }
    }


    str = (String) params.get("upperBound");
    if (str != null) {
      try {
        upperBound = Double.parseDouble(str);
        setScale = true;
      } catch (NumberFormatException nfex) { }
    }


    str = (String) params.get("majorTickIncrement");
    if (str != null) {
      try {
        majorTickIncrement = Double.parseDouble(str);
        setScale = true;
      } catch (NumberFormatException nfex) { }
    }


    str = (String) params.get("minorTickCount");
    if (str != null) {
      try {
        minorTickCount = Integer.parseInt(str);
        setScale = true;
      } catch (NumberFormatException nfex) { }
    }


    Plot plot = ((JFreeChart) chart).getPlot();
    if (plot instanceof DialPlot) {
      DialPlot dplot = (DialPlot) plot;


      if ("pin".equals(pointerType)) {
        dplot.removePointer(0);
        dplot.addPointer(new DialPointer.Pin());
      } else if ("pointer".equals(pointerType)) {
        dplot.removePointer(0);
        dplot.addPointer(new DialPointer.Pointer());
      }


      if (setCap) {
        DialCap cap = new DialCap();
        cap.setRadius(capRadius);
        cap.setFillPaint(capFillPaint);
        cap.setOutlinePaint(capOutlinePaint);
        dplot.setCap(cap);
      }


      if (setScale) {
        StandardDialScale scale = (StandardDialScale) dplot.getScale(0);
        scale.setLowerBound(lowerBound);
        scale.setUpperBound(upperBound);
        scale.setMajorTickIncrement(majorTickIncrement);
        scale.setMinorTickCount(minorTickCount);
      }


      if (dialText != null) {
        DialTextAnnotation annotation = new DialTextAnnotation(dialText);
        annotation.setFont(new Font("Dialog", Font.BOLD, 10));
        annotation.setRadius(0.35);
        annotation.setAngle(90.0);
        dplot.addLayer(annotation);
      }
    }
  }
}
Source Code of de.laures.cewolf.cpp.DialEnhancer

Related Classes of de.laures.cewolf.cpp.DialEnhancer
