Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/exports/ChartExportHelper.java @ 355:fce70ff3486b
Forget to check in pom.xml
gnv-artifacts/trunk@428 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Tue, 15 Dec 2009 14:35:41 +0000 |
parents | a88e15972c72 |
children | 3d13fa281a7e |
rev | line source |
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1 package de.intevation.gnv.exports; |
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2 |
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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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7 import com.lowagie.text.pdf.PdfContentByte; |
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8 import com.lowagie.text.pdf.PdfTemplate; |
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9 import com.lowagie.text.pdf.PdfWriter; |
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10 |
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11 import java.awt.Transparency; |
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12 import java.awt.Graphics2D; |
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13 import java.awt.geom.Rectangle2D; |
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14 import java.awt.geom.Rectangle2D.Double; |
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15 import java.io.OutputStream; |
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16 import java.io.OutputStreamWriter; |
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17 import java.io.IOException; |
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18 import java.io.UnsupportedEncodingException; |
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19 import javax.imageio.ImageIO; |
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20 |
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21 import org.apache.batik.svggen.SVGGraphics2D; |
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22 import org.apache.batik.svggen.SVGGraphics2DIOException; |
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23 import org.apache.log4j.Logger; |
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24 |
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25 import org.jfree.chart.JFreeChart; |
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26 |
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27 import de.intevation.artifactdatabase.XMLUtils; |
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28 |
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29 |
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30 /** |
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31 * @author Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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32 */ |
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33 public class ChartExportHelper { |
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34 |
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35 private static final String DEFAULT_PAGE_SIZE = "A4"; |
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36 private static final String DEFAULT_ENCODING = "UTF-8"; |
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37 |
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38 private static Logger log = Logger.getLogger(ChartExportHelper.class); |
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39 |
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40 public static void exportImage( |
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41 OutputStream out, |
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42 JFreeChart chart, |
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43 String format, |
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44 int width, |
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45 int height |
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46 ) |
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47 throws IOException |
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48 { |
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49 log.info("export chart as png"); |
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50 |
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51 ImageIO.write( |
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52 chart.createBufferedImage( |
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53 width, height, Transparency.BITMASK, null |
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54 ), |
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55 format, |
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56 out |
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57 ); |
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58 } |
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59 |
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60 |
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61 public static void exportSVG( |
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62 OutputStream out, |
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63 JFreeChart chart, |
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64 String encoding, |
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65 int width, |
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66 int height |
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67 ) { |
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68 log.info("export chart as svg"); |
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69 |
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70 if (encoding == null) |
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71 encoding = DEFAULT_ENCODING; |
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72 |
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73 org.w3c.dom.Document document = XMLUtils.newDocument(); |
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74 SVGGraphics2D graphics = new SVGGraphics2D(document); |
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75 |
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76 chart.draw(graphics, new Rectangle2D.Double(0.0D, 0.0D,width,height)); |
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77 |
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78 try { |
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79 graphics.stream(new OutputStreamWriter(out, encoding)); |
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80 } |
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81 catch (SVGGraphics2DIOException svge) { |
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82 log.error("Error while writing svg export to output stream.", svge); |
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83 } |
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84 catch (UnsupportedEncodingException uee) { |
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85 log.error("Unsupported encoding: " + encoding, uee); |
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86 } |
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87 } |
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88 |
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89 |
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90 public static void exportPDF( |
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91 OutputStream out, |
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92 JFreeChart chart, |
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93 String pageFormat, |
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94 boolean landscape, |
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95 float marginLeft, |
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96 float marginRight, |
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97 float marginTop, |
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98 float marginBottom |
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99 ) { |
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100 log.info("export chart as pdf."); |
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101 |
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102 if (pageFormat == null) |
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103 pageFormat = DEFAULT_PAGE_SIZE; |
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104 |
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105 Rectangle page = PageSize.getRectangle(pageFormat); |
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106 int pageWidth = (int) (page.getRight(marginRight) - page.getLeft(marginLeft)); |
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107 int pageHeight = (int) (page.getTop(marginTop) - page.getBottom(marginBottom)); |
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108 |
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109 Document document = null; |
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110 if (landscape) { |
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111 document = new Document(page.rotate()); |
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112 log.debug("Create landscape pdf."); |
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113 } |
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114 else |
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115 document = new Document(page); |
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116 |
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117 try { |
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118 PdfWriter writer = PdfWriter.getInstance(document, out); |
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119 |
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120 document.addSubject(chart.getTitle().getText()); |
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121 document.addCreationDate(); |
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122 document.open(); |
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123 |
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124 PdfContentByte content = writer.getDirectContent(); |
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125 |
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126 int width = 0; |
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127 int height = 0; |
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128 if (landscape) { |
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129 width = pageHeight; |
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130 height = pageWidth; |
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131 } |
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132 else { |
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133 width = pageWidth; |
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134 height = pageHeight; |
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135 } |
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136 |
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137 PdfTemplate template = content.createTemplate(width, height); |
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138 Graphics2D graphics = template.createGraphics(width, height); |
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139 Rectangle2D area = new Rectangle2D.Double(0.0D, 0.0D,width,height); |
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140 |
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141 chart.draw(graphics, area); |
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142 graphics.dispose(); |
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143 content.addTemplate(template, marginLeft, marginBottom); |
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144 } |
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145 catch (DocumentException de) { |
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146 log.error("Error while exporting chart to pdf.", de); |
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147 } |
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148 finally { |
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149 document.close(); |
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150 } |
318
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151 } |
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152 } |
320
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153 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |