Description

A function that alternates between true and false for each item within a group. The function value determines when to use an object's color. If the function evaluates to true, the named object is painted with the color=True, else the object is painted with color=False.

Use a property tag to name an object contained in the Item section whose color should be affected by this function.

Example

<expression class="org.jfree.report.modules.misc.beanshell.BSHExpression" name="isVarNeg"> 
<properties>
   <property name="expression">
    Object getValue() { 
      Object value = dataRow.get("VARIANCE");  
      if (!(value instanceof Number)) {
        return Boolean.FALSE;
      }
      Number number = (Number) value;
      if (number.doubleValue() < 0) {
        return Boolean.TRUE;
      }
      return Boolean.FALSE;
    }
    </property>
 </properties>
</expression>

<function class="org.jfree.report.function.ElementColorFunction" name="changeColor">
  <properties>
    <property name="element">Variance Field</property>
    <property name="field">isVarNeg</property>
    <property name="colorTrue">red</property>
    <property name="colorFalse">black</property>
  </properties>
</function>

<items fontname="Arial" fontsize="10" vertical-alignment="middle">
  <string-field fieldname="POSITIONTITLE" height="15" vertical-alignment="middle" width="40%" x="15%" y="0"/>
  <number-field alignment="right" fieldname="ACTUAL" format="$#,##0" height="15" width="15%" x="55%" y="0"/>
  <number-field alignment="right" fieldname="BUDGET" format="$#,##0" height="15" width="15%" x="70%" y="0"/>
  <number-field alignment="right" fieldname="VARIANCE" format="$#,##0" height="15" name="Variance Field" width="15%" x="85%" y="0"/>
  <line color="gray" height="0" weight=".25" width="85%" x1="15%" x2="100%" y1="16" y2="16"/>
</items>