net.sf.jasperreports.charts.util.ImageChartRendererFactory.java Source code

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Here is the source code for net.sf.jasperreports.charts.util.ImageChartRendererFactory.java

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/*
 * JasperReports - Free Java Reporting Library.
 * Copyright (C) 2001 - 2019 TIBCO Software Inc. 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 net.sf.jasperreports.charts.util;

import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.util.List;

import org.jfree.chart.JFreeChart;

import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRPrintImageAreaHyperlink;
import net.sf.jasperreports.engine.JRPropertiesUtil;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.JasperReportsContext;
import net.sf.jasperreports.engine.type.ImageTypeEnum;
import net.sf.jasperreports.engine.util.JRImageLoader;
import net.sf.jasperreports.renderers.Renderable;
import net.sf.jasperreports.renderers.SimpleDataRenderer;

/**
 * @author Teodor Danciu (teodord@users.sourceforge.net)
 */
public class ImageChartRendererFactory extends AbstractChartRenderableFactory {

    @Override
    public Renderable getRenderable(JasperReportsContext jasperReportsContext, JFreeChart chart,
            ChartHyperlinkProvider chartHyperlinkProvider, Rectangle2D rectangle) {
        int dpi = JRPropertiesUtil.getInstance(jasperReportsContext)
                .getIntegerProperty(Renderable.PROPERTY_IMAGE_DPI, 72);
        double scale = dpi / 72d;

        BufferedImage bi = new BufferedImage((int) (scale * (int) rectangle.getWidth()),
                (int) (scale * rectangle.getHeight()), BufferedImage.TYPE_INT_ARGB);

        List<JRPrintImageAreaHyperlink> areaHyperlinks = null;

        Graphics2D grx = bi.createGraphics();
        try {
            grx.scale(scale, scale);

            if (chartHyperlinkProvider != null && chartHyperlinkProvider.hasHyperlinks()) {
                areaHyperlinks = ChartUtil.getImageAreaHyperlinks(chart, chartHyperlinkProvider, grx, rectangle);
            } else {
                chart.draw(grx, rectangle);
            }
        } finally {
            grx.dispose();
        }

        try {
            return new SimpleDataRenderer(
                    JRImageLoader.getInstance(jasperReportsContext).loadBytesFromAwtImage(bi, ImageTypeEnum.PNG),
                    areaHyperlinks);
        } catch (JRException e) {
            throw new JRRuntimeException(e);
        }
    }

}