Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/exports/ChartExportHelper.java @ 640:e5f1e868ee3e

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Implementedr histogram pdf export. gnv-artifacts/trunk@726 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 03 Mar 2010 13:44:15 +0000
parents a94ed2755480
children a0e63136954e
rev   line source
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1 package de.intevation.gnv.exports;
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3 import com.lowagie.text.Document;
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4 import com.lowagie.text.DocumentException;
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5 import com.lowagie.text.PageSize;
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6 import com.lowagie.text.Rectangle;
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8 import com.lowagie.text.pdf.PdfContentByte;
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9 import com.lowagie.text.pdf.PdfTemplate;
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10 import com.lowagie.text.pdf.PdfWriter;
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12 import de.intevation.artifactdatabase.XMLUtils;
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13
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14 import de.intevation.gnv.chart.Chart;
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16 import java.awt.Graphics2D;
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17 import java.awt.Transparency;
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18
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19 import java.awt.geom.Rectangle2D.Double;
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21 import java.awt.geom.Rectangle2D;
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22
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23 import java.awt.image.BufferedImage;
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24
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25 import java.io.IOException;
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26 import java.io.OutputStream;
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27 import java.io.OutputStreamWriter;
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28 import java.io.UnsupportedEncodingException;
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30 import javax.imageio.ImageIO;
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32 import org.apache.batik.svggen.SVGGraphics2D;
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33 import org.apache.batik.svggen.SVGGraphics2DIOException;
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35 import org.apache.log4j.Logger;
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36
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37 import org.jfree.chart.JFreeChart;
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38
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39 /**
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40 * @author Ingo Weinzierl <ingo.weinzierl@intevation.de>
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41 */
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42 public class ChartExportHelper {
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43
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44 private static final String DEFAULT_PAGE_SIZE = "A4";
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45 private static final String DEFAULT_ENCODING = "UTF-8";
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46
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47 private static Logger log = Logger.getLogger(ChartExportHelper.class);
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48
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49 public static void exportImage(
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50 OutputStream out,
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51 JFreeChart chart,
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52 String format,
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53 int width,
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54 int height
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55 )
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56 throws IOException
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57 {
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58 log.info("export chart as png");
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59
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60 ImageIO.write(
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61 chart.createBufferedImage(
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62 width, height, Transparency.BITMASK, null
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63 ),
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64 format,
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65 out
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66 );
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67 }
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69
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70 public static void exportHistograms(
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71 OutputStream out,
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72 Chart[] histograms,
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73 String format,
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74 int width,
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75 int height)
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76 throws IOException
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77 {
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78 log.info("export histograms");
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79
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80 int size = histograms.length;
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81 BufferedImage image = new BufferedImage(
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82 width, height*size, BufferedImage.TYPE_INT_RGB);
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83 Graphics2D g = image.createGraphics();
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84
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85 for (int i = 0; i < size; i++) {
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86 JFreeChart chart = histograms[i].generateChart();
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87 chart.draw(g, new Rectangle2D.Double(0.0D, i*height, width, height));
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88 }
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89 g.finalize();
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90
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91 ImageIO.write(image, format, out);
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92 }
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93
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94
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95 public static void exportHistogramsAsSVG(
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96 OutputStream out,
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97 Chart[] histograms,
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98 String encoding,
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99 int width,
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100 int height
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101 ) {
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102 log.info("export histograms as svg");
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103
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104 if (encoding == null)
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105 encoding = DEFAULT_ENCODING;
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106
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107 org.w3c.dom.Document document = XMLUtils.newDocument();
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108 SVGGraphics2D graphics = new SVGGraphics2D(document);
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109
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110 int size = histograms.length;
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111 for (int i = 0; i < size; i++) {
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112 JFreeChart chart = histograms[i].generateChart();
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113 chart.draw(graphics, new Rectangle2D.Double(
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114 0.0D, i*height,width,height));
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115 }
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116 graphics.finalize();
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117
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118 try {
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119 graphics.stream(new OutputStreamWriter(out, encoding));
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120 }
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121 catch (SVGGraphics2DIOException svge) {
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122 log.error("Error while writing svg export to output stream.", svge);
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123 }
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124 catch (UnsupportedEncodingException uee) {
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125 log.error("Unsupported encoding: " + encoding, uee);
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126 }
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127 }
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128
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129
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130 public static void exportSVG(
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131 OutputStream out,
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132 JFreeChart chart,
a4376fd23f99 Implemented svg export of charts.
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diff changeset
133 String encoding,
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
134 int width,
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
135 int height
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
136 ) {
a4376fd23f99 Implemented svg export of charts.
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diff changeset
137 log.info("export chart as svg");
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
138
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
139 if (encoding == null)
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
140 encoding = DEFAULT_ENCODING;
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
141
323
a88e15972c72 Updated Batik library to 1.7
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 321
diff changeset
142 org.w3c.dom.Document document = XMLUtils.newDocument();
321
a4376fd23f99 Implemented svg export of charts.
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diff changeset
143 SVGGraphics2D graphics = new SVGGraphics2D(document);
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
144
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
145 chart.draw(graphics, new Rectangle2D.Double(0.0D, 0.0D,width,height));
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
146
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
147 try {
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
148 graphics.stream(new OutputStreamWriter(out, encoding));
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
149 }
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
150 catch (SVGGraphics2DIOException svge) {
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
151 log.error("Error while writing svg export to output stream.", svge);
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
152 }
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
153 catch (UnsupportedEncodingException uee) {
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
154 log.error("Unsupported encoding: " + encoding, uee);
a4376fd23f99 Implemented svg export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 320
diff changeset
155 }
318
5f2820e821e0 Implemented a helper class for exporting charts. Adapted code.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
156 }
5f2820e821e0 Implemented a helper class for exporting charts. Adapted code.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
157
320
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
158
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
159 public static void exportPDF(
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
160 OutputStream out,
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
161 JFreeChart chart,
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
162 String pageFormat,
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
163 boolean landscape,
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
164 float marginLeft,
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
165 float marginRight,
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
166 float marginTop,
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
167 float marginBottom
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
168 ) {
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
169 log.info("export chart as pdf.");
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
170
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
171 if (pageFormat == null)
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
172 pageFormat = DEFAULT_PAGE_SIZE;
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
173
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
174 Rectangle page = PageSize.getRectangle(pageFormat);
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
175 int pageWidth = (int) (page.getRight(marginRight) - page.getLeft(marginLeft));
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
176 int pageHeight = (int) (page.getTop(marginTop) - page.getBottom(marginBottom));
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
177
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
178 Document document = null;
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
179 if (landscape) {
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
180 document = new Document(page.rotate());
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
181 log.debug("Create landscape pdf.");
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
182 }
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
183 else
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
184 document = new Document(page);
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
185
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
186 try {
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
187 PdfWriter writer = PdfWriter.getInstance(document, out);
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
188
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
189 document.addSubject(chart.getTitle().getText());
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
190 document.addCreationDate();
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
191 document.open();
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
192
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
193 PdfContentByte content = writer.getDirectContent();
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
194
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
195 int width = 0;
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
196 int height = 0;
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
197 if (landscape) {
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
198 width = pageHeight;
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
199 height = pageWidth;
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
200 }
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
201 else {
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
202 width = pageWidth;
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
203 height = pageHeight;
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
204 }
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
205
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
206 PdfTemplate template = content.createTemplate(width, height);
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
207 Graphics2D graphics = template.createGraphics(width, height);
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
208 Rectangle2D area = new Rectangle2D.Double(0.0D, 0.0D,width,height);
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
209
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
210 chart.draw(graphics, area);
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
211 graphics.dispose();
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
212 content.addTemplate(template, marginLeft, marginBottom);
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
213 }
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
214 catch (DocumentException de) {
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
215 log.error("Error while exporting chart to pdf.", de);
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
216 }
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
217 finally {
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
218 document.close();
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
219 }
318
5f2820e821e0 Implemented a helper class for exporting charts. Adapted code.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
220 }
640
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
221
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
222
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
223 public static void exportHistogramsAsPDF(
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
224 OutputStream out,
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
225 Chart[] histograms,
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
226 String pageFormat,
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
227 boolean landscape,
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
228 float marginLeft,
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
229 float marginRight,
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
230 float marginTop,
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
231 float marginBottom
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
232 ) {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
233 log.info("export histogram as pdf.");
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
234
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
235 if (pageFormat == null)
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
236 pageFormat = DEFAULT_PAGE_SIZE;
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
237
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
238 Rectangle page = PageSize.getRectangle(pageFormat);
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
239 int pageWidth =
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
240 (int) (page.getRight(marginRight) - page.getLeft(marginLeft));
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
241 int pageHeight =
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
242 (int) (page.getTop(marginTop) - page.getBottom(marginBottom));
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
243
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
244 Document document = null;
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
245 if (landscape) {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
246 document = new Document(page.rotate());
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
247 log.debug("Create landscape pdf.");
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
248 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
249 else
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
250 document = new Document(page);
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
251
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
252 try {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
253 PdfWriter writer = PdfWriter.getInstance(document, out);
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
254
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
255 document.addCreationDate();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
256 document.open();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
257
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
258 PdfContentByte content = writer.getDirectContent();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
259
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
260 int width = 0;
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
261 int height = 0;
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
262 if (landscape) {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
263 width = pageHeight;
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
264 height = pageWidth;
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
265 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
266 else {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
267 width = pageWidth;
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
268 height = pageHeight;
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
269 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
270
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
271 int size = histograms.length;
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
272 for (int i = 0; i < size; i++) {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
273 if (i > 0) {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
274 document.newPage();
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275 }
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276
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277 JFreeChart chart = histograms[i].generateChart();
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278 PdfTemplate template = content.createTemplate(width, height);
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279 Graphics2D graphics = template.createGraphics(width, height);
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280 Rectangle2D area = new Rectangle2D.Double(
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281 0.0D, 0.0D,width,height);
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282
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283 chart.draw(graphics, area);
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284 graphics.dispose();
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285 content.addTemplate(template, marginLeft, marginBottom);
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286 }
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287 }
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288 catch (DocumentException de) {
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289 log.error("Error while exporting chart to pdf.", de);
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290 }
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291 finally {
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292 document.close();
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293 }
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294 }
318
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295 }
320
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296 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org