org.encog.workbench.util.graph.DocumentPDF.java Source code

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Here is the source code for org.encog.workbench.util.graph.DocumentPDF.java

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/*
 * Encog(tm) Workbench v3.3
 * http://www.heatonresearch.com/encog/
 * https://github.com/encog/encog-java-workbench
 *
 * Copyright 2008-2014 Heaton Research, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *   
 * For more information on Heaton Research copyrights, licenses 
 * and trademarks visit:
 * http://www.heatonresearch.com/copyright
 */
package org.encog.workbench.util.graph;

import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import org.encog.workbench.WorkBenchError;
import org.jfree.chart.JFreeChart;

import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.DefaultFontMapper;
import com.lowagie.text.pdf.FontMapper;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfTemplate;
import com.lowagie.text.pdf.PdfWriter;

public class DocumentPDF {
    public static void writeChartAsPDF(OutputStream out, JFreeChart chart, int width, int height, FontMapper mapper)
            throws IOException {
        Rectangle pagesize = new Rectangle(width, height);
        Document document = new Document(pagesize, 50, 50, 50, 50);
        try {
            PdfWriter writer = PdfWriter.getInstance(document, out);
            document.addAuthor("JFreeChart");
            document.addSubject("Demonstration");
            document.open();
            PdfContentByte cb = writer.getDirectContent();
            PdfTemplate tp = cb.createTemplate(width, height);
            Graphics2D g2 = tp.createGraphics(width, height, mapper);
            Rectangle2D r2D = new Rectangle2D.Double(0, 0, width, height);
            chart.draw(g2, r2D);
            g2.dispose();
            cb.addTemplate(tp, 0, 0);
        } catch (DocumentException de) {
            System.err.println(de.getMessage());
        }
    }

    public static void savePDF(File filename, JFreeChart chart, int width, int height) {
        try {
            // step 1
            Document document = new Document(new Rectangle(width, height));
            // step 2
            PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(filename));
            // step 3
            document.open();
            // step 4
            PdfContentByte canvas = writer.getDirectContent();
            Graphics2D g2 = canvas.createGraphics(width, height);
            Rectangle2D area = new Rectangle2D.Double(0, 0, width, height);
            chart.draw(g2, area);
            g2.dispose();
            // step 5
            document.close();
        } catch (DocumentException ex) {
            throw new WorkBenchError(ex);
        } catch (IOException ex) {
            throw new WorkBenchError(ex);
        }

    }

}