/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
*/
package jcharts;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.image.BufferedImage;
import java.util.List;
import net.sf.jasperreports.engine.JRComponentElement;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRImageRenderer;
import net.sf.jasperreports.engine.JRPrintElement;
import net.sf.jasperreports.engine.JRPrintImage;
import net.sf.jasperreports.engine.JRRenderable;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.component.BaseFillComponent;
import net.sf.jasperreports.engine.component.FillPrepareResult;
import net.sf.jasperreports.engine.fill.JRFillCloneFactory;
import net.sf.jasperreports.engine.fill.JRFillCloneable;
import net.sf.jasperreports.engine.fill.JRFillObjectFactory;
import net.sf.jasperreports.engine.fill.JRTemplateImage;
import net.sf.jasperreports.engine.fill.JRTemplatePrintImage;
import net.sf.jasperreports.engine.type.EvaluationTimeEnum;
import net.sf.jasperreports.engine.type.OnErrorTypeEnum;
import org.jCharts.Chart;
import org.jCharts.axisChart.AxisChart;
import org.jCharts.chartData.AxisChartDataSet;
import org.jCharts.chartData.ChartDataException;
import org.jCharts.chartData.DataSeries;
import org.jCharts.properties.AreaChartProperties;
import org.jCharts.properties.AxisProperties;
import org.jCharts.properties.ChartProperties;
import org.jCharts.properties.LegendProperties;
import org.jCharts.properties.PropertyException;
import org.jCharts.types.ChartType;
/**
*
* @author Lucian Chirita (lucianc@users.sourceforge.net)
* @version $Id: FillAxisChart.java 3611 2010-03-23 12:09:17Z teodord $
*/
public class FillAxisChart extends BaseFillComponent implements JRFillCloneable
{
private final AxisChartComponent chart;
private final FillAxisDataset dataset;
private String legendLabel;
public FillAxisChart(AxisChartComponent chart, JRFillObjectFactory factory)
{
this.chart = chart;
this.dataset = new FillAxisDataset(chart.getDataset(), factory);
factory.registerElementDataset(this.dataset);
}
protected boolean isEvaluateNow()
{
return chart.getEvaluationTime() == EvaluationTimeEnum.NOW;
}
public void evaluate(byte evaluation) throws JRException
{
if (isEvaluateNow())
{
evaluateChart(evaluation);
}
}
protected void evaluateChart(byte evaluation) throws JRException
{
legendLabel = (String) fillContext.evaluate(chart.getLegendLabelExpression(), evaluation);
dataset.evaluateDatasetRun(evaluation);
}
public JRPrintElement fill()
{
JRComponentElement element = fillContext.getComponentElement();
JRTemplateImage templateImage = new JRTemplateImage(fillContext.getElementOrigin(),
fillContext.getDefaultStyleProvider());
templateImage.setStyle(fillContext.getElementStyle());
JRTemplatePrintImage image = new JRTemplatePrintImage(templateImage);
image.setX(element.getX());
image.setY(fillContext.getElementPrintY());
image.setWidth(element.getWidth());
image.setHeight(element.getHeight());
if (isEvaluateNow())
{
copy(image);
}
else
{
fillContext.registerDelayedEvaluation(image,
chart.getEvaluationTime(), chart.getEvaluationGroup());
}
return image;
}
public FillPrepareResult prepare(int availableHeight)
{
return FillPrepareResult.PRINT_NO_STRETCH;
}
public JRFillCloneable createClone(JRFillCloneFactory factory)
{
throw new UnsupportedOperationException();
}
public void evaluateDelayedElement(JRPrintElement element, byte evaluation) throws JRException
{
evaluateChart(evaluation);
copy((JRPrintImage) element);
}
protected void copy(JRPrintImage image)
{
dataset.finishDataset();
List labelsList = dataset.getLabels();
String[] labels = (String[]) labelsList.toArray(new String[labelsList.size()]);
List valuesList = dataset.getValues();
double[][] values = {new double[valuesList.size()]};
for (int i = 0; i < values[0].length; i++)
{
values[0][i] = ((Double) valuesList.get(i)).doubleValue();
}
String[] legendLabels = {legendLabel};
Paint[] paints = {chart.getAreaColor()};
try
{
AreaChartProperties areaChartProperties = new AreaChartProperties();
AxisChartDataSet axisChartDataSet = new AxisChartDataSet(values, legendLabels,
paints, ChartType.AREA, areaChartProperties);
DataSeries dataSeries = new DataSeries(labels, null, null, null);
dataSeries.addIAxisPlotDataSet(axisChartDataSet);
ChartProperties chartProperties = new ChartProperties();
AxisProperties axisProperties = new AxisProperties();
LegendProperties legendProperties = new LegendProperties();
JRComponentElement element = fillContext.getComponentElement();
AxisChart axisChart = new AxisChart(dataSeries, chartProperties, axisProperties, legendProperties,
element.getWidth(), element.getHeight());
//creating an chart image because AxisChart objects fail on serialization
BufferedImage img = getChartImage(axisChart);
JRRenderable renderer = JRImageRenderer.getInstance(img, JRRenderable.IMAGE_TYPE_PNG,
OnErrorTypeEnum.ERROR);
image.setRenderer(renderer);
}
catch (ChartDataException e)
{
throw new JRRuntimeException(e);
}
catch (JRException e)
{
throw new JRRuntimeException(e);
}
}
protected BufferedImage getChartImage(Chart chart) throws JRException
{
BufferedImage bufferedImage = new BufferedImage(
chart.getImageWidth(), chart.getImageHeight(),
BufferedImage.TYPE_INT_RGB);
Graphics2D graphics = bufferedImage.createGraphics();
chart.setGraphics2D(graphics);
try
{
chart.render();
}
catch (ChartDataException e)
{
throw new JRRuntimeException(e);
}
catch (PropertyException e)
{
throw new JRRuntimeException(e);
}
return bufferedImage;
}
}