Changing the background color of chart using event handler

Happy_20

I have to change the 3 different background color of meter chart based on the the parameters i get in the database. I need to do this in java using event handler. Can anyone tell me how to do that

johnw

<pre class='_prettyXprint _lang-auto _linenums:0'>
import org.eclipse.birt.chart.model.attribute.ColorDefinition;
import org.eclipse.birt.chart.model.attribute.impl.ColorDefinitionImpl;
import org.eclipse.birt.chart.model.layout.Block;
import org.eclipse.birt.chart.script.ChartEventHandlerAdapter;
import org.eclipse.birt.chart.script.IChartScriptContext;
import org.eclipse.birt.report.data.adapter.api.script.ReportContextObject;


public class Test extends ChartEventHandlerAdapter {

@Override
public void beforeDrawBlock(Block block, IChartScriptContext icsc) {
ReportContextObject reportContext = (ReportContextObject) icsc.getExternalContext().getObject();
reportContext.getParameterValue("backgroundColor");

int red = 0;
int blue = 0;
int green = 127;

ColorDefinition color = ColorDefinitionImpl.create(red, green, blue);

block.setBackground(color);
}
}

</pre>