dive4elements/river: flys-artifacts/src/main/java/de/intevation/flys/exports/ChartExportHelper.java annotate

author	Ingo Weinzierl <ingo.weinzierl@intevation.de>
date	Mon, 28 Mar 2011 10:48:27 +0000
parents
children	084995dd1c9c

rev	line source
152 956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	1 /*
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	2 * Copyright (c) 2011 by Intevation GmbH
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	3 *
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	4 * This program is free software under the LGPL (>=v2.1)
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	5 * Read the file LGPL.txt coming with the software for details
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	6 * or visit http://www.gnu.org/licenses/ if it does not exist.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	7 */
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	8 package de.intevation.flys.exports;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	9
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	10 import com.lowagie.text.Document;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	11 import com.lowagie.text.DocumentException;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	12 import com.lowagie.text.PageSize;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	13 import com.lowagie.text.Rectangle;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	14
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	15 import com.lowagie.text.pdf.PdfContentByte;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	16 import com.lowagie.text.pdf.PdfTemplate;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	17 import com.lowagie.text.pdf.PdfWriter;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	18
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	19 import java.awt.Graphics2D;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	20 import java.awt.Transparency;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	21
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	22 import java.awt.geom.Rectangle2D.Double;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	23
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	24 import java.awt.geom.Rectangle2D;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	25
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	26 import java.awt.image.BufferedImage;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	27
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	28 import java.io.IOException;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	29 import java.io.OutputStream;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	30 import java.io.OutputStreamWriter;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	31 import java.io.UnsupportedEncodingException;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	32
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	33 import javax.imageio.ImageIO;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	34
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	35 import org.apache.batik.svggen.SVGGraphics2D;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	36 import org.apache.batik.svggen.SVGGraphics2DIOException;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	37
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	38 import org.apache.log4j.Logger;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	39
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	40 import org.jfree.chart.JFreeChart;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	41
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	42 import de.intevation.artifacts.CallContext;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	43
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	44 import de.intevation.artifacts.common.utils.XMLUtils;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	45
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	46
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	47 /**
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	48 * This class is a helper class which supports some methods to export charts
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	49 * into specific formats.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	50 *
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	51 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	52 */
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	53 public class ChartExportHelper {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	54
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	55 /**
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	56 * Constant field to define A4 as default page size.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	57 */
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	58 private static final String DEFAULT_PAGE_SIZE = "A4";
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	59
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	60 /**
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	61 * Constant field to define UTF-8 as default encoding.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	62 */
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	63 private static final String DEFAULT_ENCODING = "UTF-8";
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	64
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	65 /**
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	66 * Logger used for logging with log4j.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	67 */
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	68 private static Logger log = Logger.getLogger(ChartExportHelper.class);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	69
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	70
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	71 /**
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	72 * A method to export a <code>JFreeChart</code> as image to an
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	73 * <code>OutputStream</code> with a given format, width and height.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	74 *
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	75 * @param out OutputStream
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	76 * @param chart JFreeChart object to be exported.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	77 * @param format Format (e.g. png, gif, jpg)
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	78 * @param width Width, the image used to be
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	79 * @param height Height, the image used to be
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	80 *
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	81 * @throws IOException if writing image to OutputStream failed.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	82 */
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	83 public static void exportImage(
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	84 OutputStream out,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	85 JFreeChart chart,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	86 String format,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	87 int width,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	88 int height
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	89 )
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	90 throws IOException
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	91 {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	92 log.info("export chart as png");
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	93
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	94 ImageIO.write(
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	95 chart.createBufferedImage(
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	96 width, height, Transparency.BITMASK, null
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	97 ),
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	98 format,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	99 out
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	100 );
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	101 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	102
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	103
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	104 /**
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	105 * A method to export a <code>JFreeChart</code> as SVG to an
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	106 * <code>OutputStream</code>.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	107 *
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	108 * @param out OutputStream
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	109 * @param chart JFreeChart to be exported
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	110 * @param encoding Encoding, defaults to {@link #DEFAULT_ENCODING} if null
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	111 * @param width Width the svg used to be
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	112 * @param height Height the svg used to be
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	113 */
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	114 public static void exportSVG(
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	115 OutputStream out,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	116 JFreeChart chart,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	117 String encoding,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	118 int width,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	119 int height
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	120 ) {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	121 log.info("export chart as svg");
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	122
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	123 if (encoding == null)
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	124 encoding = DEFAULT_ENCODING;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	125
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	126 org.w3c.dom.Document document = XMLUtils.newDocument();
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	127 SVGGraphics2D graphics = new SVGGraphics2D(document);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	128
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	129 chart.draw(graphics, new Rectangle2D.Double(0.0D, 0.0D,width,height));
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	130
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	131 try {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	132 graphics.stream(new OutputStreamWriter(out, encoding));
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	133 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	134 catch (SVGGraphics2DIOException svge) {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	135 log.error("Error while writing svg export to output stream.", svge);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	136 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	137 catch (UnsupportedEncodingException uee) {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	138 log.error("Unsupported encoding: " + encoding, uee);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	139 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	140 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	141
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	142
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	143 /**
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	144 * A method to export a <code>JFreeChart</code> as PDF to an
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	145 * <code>OutputStream</code>.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	146 *
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	147 * @param out OutputStream
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	148 * @param chart JFreeChart
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	149 * @param pageFormat String to specify a page format, {@link
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	150 * #DEFAULT_PAGE_SIZE} is used if no pageFormat is given
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	151 * @param landscape If this is true, the pdf is delivered in landscape
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	152 * format
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	153 * @param marginLeft Space to left border
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	154 * @param marginRight Space to right border
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	155 * @param marginTop Space to upper border
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	156 * @param marginBottom Space to lower border
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	157 */
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	158 public static void exportPDF(
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	159 OutputStream out,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	160 JFreeChart chart,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	161 String pageFormat,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	162 float marginLeft,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	163 float marginRight,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	164 float marginTop,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	165 float marginBottom,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	166 CallContext context
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	167 ) {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	168 log.info("export chart as pdf.");
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	169
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	170 if (pageFormat == null)
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	171 pageFormat = DEFAULT_PAGE_SIZE;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	172
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	173 // max size of the chart
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	174 Rectangle page = PageSize.getRectangle(pageFormat);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	175 float pageWidth = page.getWidth();
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	176 float pageHeight = page.getHeight();
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	177
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	178 // the chart width
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	179 int chartWidth = (Integer) context.getContextValue("chart.width");
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	180 int chartHeight = (Integer) context.getContextValue("chart.height");
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	181
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	182 boolean landscape = chartWidth > chartHeight ? true : false;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	183
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	184 float width = 0;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	185 float height = 0;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	186 if (landscape) {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	187 width = pageHeight;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	188 height = pageWidth;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	189 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	190 else {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	191 width = pageWidth;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	192 height = pageHeight;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	193 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	194
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	195 float spaceX = width - marginLeft - marginRight;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	196 if (chartWidth > spaceX) {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	197 log.warn("Width of the chart is too big for pdf -> resize it now.");
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	198 double ratio = ((double)spaceX) / chartWidth;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	199 chartWidth *= ratio;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	200 chartHeight *= ratio;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	201 log.debug("Resized chart to " + chartWidth + "x" + chartHeight);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	202 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	203
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	204 float spaceY = height - marginTop - marginBottom;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	205 if (chartHeight > spaceY) {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	206 log.warn("Height of the chart is too big for pdf -> resize it now.");
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	207 double ratio = ((double)spaceY) / chartHeight;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	208 chartWidth *= ratio;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	209 chartHeight *= ratio;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	210 log.debug("Resized chart to " + chartWidth + "x" + chartHeight);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	211 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	212
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	213 Document document = null;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	214 if (landscape) {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	215 document = new Document(page.rotate());
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	216 log.debug("Create landscape pdf.");
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	217 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	218 else
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	219 document = new Document(page);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	220
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	221 try {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	222 PdfWriter writer = PdfWriter.getInstance(document, out);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	223
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	224 document.addSubject(chart.getTitle().getText());
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	225 document.addCreationDate();
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	226 document.open();
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	227
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	228 PdfContentByte content = writer.getDirectContent();
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	229
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	230 PdfTemplate template = content.createTemplate(width, height);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	231 Graphics2D graphics = template.createGraphics(width, height);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	232
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	233 double[] origin = getCenteredAnchor(
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	234 marginLeft, marginRight, marginBottom, marginTop,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	235 width, height,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	236 chartWidth, chartHeight);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	237
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	238 Rectangle2D area = new Rectangle2D.Double(
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	239 origin[0], origin[1], chartWidth, chartHeight);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	240
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	241 chart.draw(graphics, area);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	242 graphics.dispose();
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	243 content.addTemplate(template, 0f, 0f);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	244 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	245 catch (DocumentException de) {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	246 log.error("Error while exporting chart to pdf.", de);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	247 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	248 finally {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	249 document.close();
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	250 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	251 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	252
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	253
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	254 /**
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	255 * This method returns the anchor of the chart so that the chart is centered
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	256 * according to the given parameters.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	257 *
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	258 * @param mLeft Left margin
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	259 * @param mRight Right margin
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	260 * @param mBottom Bottom margin
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	261 * @param mTop Top margin
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	262 * @param width The complete width of the drawing area.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	263 * @param height The complete height of the drawing area.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	264 * @param chartWidth The width of the chart.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	265 * @param chartHeight The height of the chart.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	266 *
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	267 * @return an array that contains the anchor for a chart with the given
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	268 * parameters. The first value is the x point, the second value is the y
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	269 * point.
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	270 */
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	271 public static double[] getCenteredAnchor(
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	272 double mLeft, double mRight, double mBottom, double mTop,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	273 double width, double height,
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	274 double chartWidth, double chartHeight
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	275 ) {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	276 if (log.isDebugEnabled()) {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	277 log.debug("Calculate centered origin...");
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	278 log.debug("-> PDF width : " + width);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	279 log.debug("-> PDF height : " + height);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	280 log.debug("-> Chart width : " + chartWidth);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	281 log.debug("-> Chart height : " + chartHeight);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	282 log.debug("-> margin left : " + mLeft);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	283 log.debug("-> margin right : " + mRight);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	284 log.debug("-> margin bottom: " + mBottom);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	285 log.debug("-> margin top : " + mTop);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	286 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	287
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	288 double[] origin = new double[2];
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	289
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	290 double centerX = width / 2;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	291 double centerY = height / 2;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	292
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	293 origin[0] = centerX - chartWidth / 2;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	294 origin[1] = centerY - chartHeight / 2;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	295
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	296 origin[0] = origin[0] >= mLeft ? origin[0] : mLeft;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	297 origin[1] = origin[1] >= mTop ? origin[1] : mTop;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	298
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	299 if (log.isDebugEnabled()) {
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	300 log.debug("==> centered left origin: " + origin[0]);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	301 log.debug("==> centered top origin: " + origin[1]);
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	302 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	303
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	304 return origin;
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	305 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	306 }
956445dd601d Added a helper class to export charts. Ingo Weinzierl <ingo.weinzierl@intevation.de> parents: diff changeset	307 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :

152

956445dd601d Added a helper class to export charts.