Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/exports/ChartExportHelper.java @ 1117:dec4257ad570

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Changed imports to fit new positions of XMLUtils and Config gnv-artifacts/trunk@1478 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Tue, 15 Mar 2011 16:13:39 +0000
parents f953c9a559d8
children
rev   line source
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1 /*
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2 * Copyright (c) 2010 by Intevation GmbH
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3 *
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4 * This program is free software under the LGPL (>=v2.1)
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5 * Read the file LGPL.txt coming with the software for details
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
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7 */
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8
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9 package de.intevation.gnv.exports;
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10
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11 import com.lowagie.text.Document;
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12 import com.lowagie.text.DocumentException;
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13 import com.lowagie.text.PageSize;
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14 import com.lowagie.text.Rectangle;
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16 import com.lowagie.text.pdf.PdfContentByte;
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17 import com.lowagie.text.pdf.PdfTemplate;
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18 import com.lowagie.text.pdf.PdfWriter;
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19
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20 import de.intevation.artifacts.CallContext;
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21
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dec4257ad570 Changed imports to fit new positions of XMLUtils and Config
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22 import de.intevation.artifacts.common.utils.XMLUtils;
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23
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24 import de.intevation.gnv.chart.Chart;
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25
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26 import java.awt.Graphics2D;
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27 import java.awt.Transparency;
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28
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29 import java.awt.geom.Rectangle2D.Double;
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31 import java.awt.geom.Rectangle2D;
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32
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33 import java.awt.image.BufferedImage;
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34
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35 import java.io.IOException;
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36 import java.io.OutputStream;
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37 import java.io.OutputStreamWriter;
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38 import java.io.UnsupportedEncodingException;
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40 import javax.imageio.ImageIO;
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41
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42 import org.apache.batik.svggen.SVGGraphics2D;
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43 import org.apache.batik.svggen.SVGGraphics2DIOException;
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44
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45 import org.apache.log4j.Logger;
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46
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47 import org.jfree.chart.JFreeChart;
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48
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49 /**
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50 * This class is a helper class which supports some methods to export charts
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51 * into specific formats.
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52 *
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53 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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54 */
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55 public class ChartExportHelper {
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56
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57 /**
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58 * Constant field to define A4 as default page size.
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59 */
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60 private static final String DEFAULT_PAGE_SIZE = "A4";
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61
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62 /**
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63 * Constant field to define UTF-8 as default encoding.
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64 */
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65 private static final String DEFAULT_ENCODING = "UTF-8";
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66
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67 /**
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68 * Logger used for logging with log4j.
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69 */
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70 private static Logger log = Logger.getLogger(ChartExportHelper.class);
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71
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72
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73 /**
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74 * A method to export a <code>JFreeChart</code> as image to an
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75 * <code>OutputStream</code> with a given format, width and height.
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76 *
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77 * @param out OutputStream
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78 * @param chart JFreeChart object to be exported.
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79 * @param format Format (e.g. png, gif, jpg)
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80 * @param width Width, the image used to be
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81 * @param height Height, the image used to be
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82 *
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83 * @throws IOException if writing image to OutputStream failed.
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84 */
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85 public static void exportImage(
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86 OutputStream out,
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87 JFreeChart chart,
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88 String format,
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89 int width,
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90 int height
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91 )
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92 throws IOException
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93 {
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94 log.info("export chart as png");
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95
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96 ImageIO.write(
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97 chart.createBufferedImage(
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98 width, height, Transparency.BITMASK, null
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99 ),
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100 format,
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101 out
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102 );
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103 }
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106 /**
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107 * A method to export a <code>JFreeChart</code> histogram as image to an
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108 * <code>OutputStream</code> with a given format, width and height.
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109 *
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110 * @param out OutputStream
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111 * @param histograms Array of {@link de.intevation.gnv.chart.Chart} objects
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112 * @param format A format (e.g. png, gif, jpg)
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113 * @param width Width the image used to be
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114 * @param height Height the image used to be
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115 *
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116 * @throws IOException if writing image to OutputStream failed.
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117 */
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118 public static void exportHistograms(
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119 OutputStream out,
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120 Chart[] histograms,
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121 String format,
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122 int width,
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123 int height)
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124 throws IOException
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125 {
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126 log.info("export histograms");
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127
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128 int size = histograms.length;
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129 BufferedImage image = new BufferedImage(
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130 width, height*size, BufferedImage.TYPE_INT_RGB);
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131 Graphics2D g = image.createGraphics();
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132
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133 for (int i = 0; i < size; i++) {
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134 JFreeChart chart = histograms[i].generateChart();
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135 chart.draw(g, new Rectangle2D.Double(0.0D, i*height, width, height));
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136 }
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137 g.finalize();
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138
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139 ImageIO.write(image, format, out);
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140 }
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141
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142
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143 /**
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144 * A method to export a <code>JFreeChart</code> histogram as SVG to an
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145 * <code>OutputStream</code>.
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146 *
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147 * @param out OutputStream
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148 * @param histograms Array of {@link de.intevation.gnv.chart.Chart}
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149 * @param encoding Encoding, defaults to {@link #DEFAULT_ENCODING} if null
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150 * @param width Width the svg used to be
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151 * @param height Height the svg used to be
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152 */
639
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153 public static void exportHistogramsAsSVG(
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154 OutputStream out,
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155 Chart[] histograms,
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156 String encoding,
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157 int width,
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158 int height
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159 ) {
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160 log.info("export histograms as svg");
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161
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162 if (encoding == null)
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163 encoding = DEFAULT_ENCODING;
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164
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165 org.w3c.dom.Document document = XMLUtils.newDocument();
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166 SVGGraphics2D graphics = new SVGGraphics2D(document);
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167
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168 int size = histograms.length;
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169 for (int i = 0; i < size; i++) {
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170 JFreeChart chart = histograms[i].generateChart();
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171 chart.draw(graphics, new Rectangle2D.Double(
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172 0.0D, i*height,width,height));
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173 }
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174 graphics.finalize();
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175
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176 try {
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177 graphics.stream(new OutputStreamWriter(out, encoding));
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178 }
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179 catch (SVGGraphics2DIOException svge) {
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180 log.error("Error while writing svg export to output stream.", svge);
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181 }
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182 catch (UnsupportedEncodingException uee) {
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183 log.error("Unsupported encoding: " + encoding, uee);
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184 }
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185 }
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186
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187
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188 /**
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189 * A method to export a <code>JFreeChart</code> as SVG to an
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190 * <code>OutputStream</code>.
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191 *
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192 * @param out OutputStream
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193 * @param chart JFreeChart to be exported
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194 * @param encoding Encoding, defaults to {@link #DEFAULT_ENCODING} if null
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195 * @param width Width the svg used to be
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196 * @param height Height the svg used to be
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197 */
321
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198 public static void exportSVG(
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199 OutputStream out,
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200 JFreeChart chart,
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201 String encoding,
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202 int width,
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203 int height
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204 ) {
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205 log.info("export chart as svg");
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206
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207 if (encoding == null)
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208 encoding = DEFAULT_ENCODING;
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209
323
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210 org.w3c.dom.Document document = XMLUtils.newDocument();
321
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211 SVGGraphics2D graphics = new SVGGraphics2D(document);
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212
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213 chart.draw(graphics, new Rectangle2D.Double(0.0D, 0.0D,width,height));
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214
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215 try {
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216 graphics.stream(new OutputStreamWriter(out, encoding));
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217 }
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218 catch (SVGGraphics2DIOException svge) {
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219 log.error("Error while writing svg export to output stream.", svge);
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220 }
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221 catch (UnsupportedEncodingException uee) {
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222 log.error("Unsupported encoding: " + encoding, uee);
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223 }
318
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224 }
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225
320
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226
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227 /**
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228 * A method to export a <code>JFreeChart</code> as PDF to an
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229 * <code>OutputStream</code>.
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230 *
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231 * @param out OutputStream
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232 * @param chart JFreeChart
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233 * @param pageFormat String to specify a page format, {@link
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234 * #DEFAULT_PAGE_SIZE} is used if no pageFormat is given
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235 * @param landscape If this is true, the pdf is delivered in landscape
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236 * format
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237 * @param marginLeft Space to left border
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238 * @param marginRight Space to right border
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239 * @param marginTop Space to upper border
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240 * @param marginBottom Space to lower border
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241 */
320
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242 public static void exportPDF(
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243 OutputStream out,
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244 JFreeChart chart,
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245 String pageFormat,
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246 float marginLeft,
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247 float marginRight,
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248 float marginTop,
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249 float marginBottom,
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250 CallContext context
320
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251 ) {
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252 log.info("export chart as pdf.");
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253
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254 if (pageFormat == null)
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255 pageFormat = DEFAULT_PAGE_SIZE;
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256
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257 // max size of the chart
320
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258 Rectangle page = PageSize.getRectangle(pageFormat);
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259 float pageWidth = page.getWidth();
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260 float pageHeight = page.getHeight();
320
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261
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262 // the chart width
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263 int chartWidth = (Integer) context.getContextValue("chart.width");
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264 int chartHeight = (Integer) context.getContextValue("chart.height");
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265
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266 boolean landscape = chartWidth > chartHeight ? true : false;
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267
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268 float width = 0;
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269 float height = 0;
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270 if (landscape) {
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271 width = pageHeight;
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272 height = pageWidth;
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273 }
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274 else {
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275 width = pageWidth;
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276 height = pageHeight;
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277 }
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278
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279 float spaceX = width - marginLeft - marginRight;
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280 if (chartWidth > spaceX) {
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281 log.warn("Width of the chart is too big for pdf -> resize it now.");
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282 double ratio = ((double)spaceX) / chartWidth;
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283 chartWidth *= ratio;
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284 chartHeight *= ratio;
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285 log.debug("Resized chart to " + chartWidth + "x" + chartHeight);
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286 }
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287
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288 float spaceY = height - marginTop - marginBottom;
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289 if (chartHeight > spaceY) {
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290 log.warn("Height of the chart is too big for pdf -> resize it now.");
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291 double ratio = ((double)spaceY) / chartHeight;
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292 chartWidth *= ratio;
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293 chartHeight *= ratio;
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294 log.debug("Resized chart to " + chartWidth + "x" + chartHeight);
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295 }
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296
320
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297 Document document = null;
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298 if (landscape) {
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299 document = new Document(page.rotate());
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300 log.debug("Create landscape pdf.");
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301 }
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302 else
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303 document = new Document(page);
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304
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305 try {
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306 PdfWriter writer = PdfWriter.getInstance(document, out);
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307
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308 document.addSubject(chart.getTitle().getText());
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309 document.addCreationDate();
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310 document.open();
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311
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312 PdfContentByte content = writer.getDirectContent();
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313
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314 PdfTemplate template = content.createTemplate(width, height);
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315 Graphics2D graphics = template.createGraphics(width, height);
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316
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317 double[] origin = getCenteredAnchor(
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318 marginLeft, marginRight, marginBottom, marginTop,
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319 width, height,
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320 chartWidth, chartHeight);
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321
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322 Rectangle2D area = new Rectangle2D.Double(
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323 origin[0], origin[1], chartWidth, chartHeight);
320
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324
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325 chart.draw(graphics, area);
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326 graphics.dispose();
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327 content.addTemplate(template, 0f, 0f);
320
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328 }
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diff changeset
329 catch (DocumentException de) {
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330 log.error("Error while exporting chart to pdf.", de);
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331 }
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diff changeset
332 finally {
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333 document.close();
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diff changeset
334 }
318
5f2820e821e0 Implemented a helper class for exporting charts. Adapted code.
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diff changeset
335 }
640
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336
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337
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338 /**
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339 * A method to export <code>JFreeChart</code> histograms as PDF to an
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340 * <code>OutputStream</code>. Each histogram contained in histograms is
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341 * drawn to an own page in the resulting pdf.
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342 *
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343 * @param out OutputStream
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344 * @param histograms JFreeChart histograms
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345 * @param pageFormat String to specify a page format, {@link
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346 * #DEFAULT_PAGE_SIZE} is used if no pageFormat is given
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347 * @param landscape If this is true, the pdf is delivered in landscape
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diff changeset
348 * format
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349 * @param marginLeft Space to left border
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350 * @param marginRight Space to right border
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351 * @param marginTop Space to upper border
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352 * @param marginBottom Space to lower border
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diff changeset
353 */
640
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354 public static void exportHistogramsAsPDF(
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355 OutputStream out,
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356 Chart[] histograms,
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357 String pageFormat,
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358 float marginLeft,
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359 float marginRight,
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diff changeset
360 float marginTop,
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6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
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361 float marginBottom,
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
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diff changeset
362 CallContext context
640
e5f1e868ee3e Implementedr histogram pdf export.
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diff changeset
363 ) {
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diff changeset
364 log.info("export histogram as pdf.");
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diff changeset
365
e5f1e868ee3e Implementedr histogram pdf export.
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366 if (pageFormat == null)
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367 pageFormat = DEFAULT_PAGE_SIZE;
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diff changeset
368
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369 Rectangle page = PageSize.getRectangle(pageFormat);
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370 float pageWidth = page.getWidth();
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diff changeset
371 float pageHeight = page.getHeight();
640
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372
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373 // the chart width
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
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diff changeset
374 int chartWidth = (Integer) context.getContextValue("chart.width");
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
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diff changeset
375 int chartHeight = (Integer) context.getContextValue("chart.height");
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
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376
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
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diff changeset
377 boolean landscape = chartWidth > chartHeight ? true : false;
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
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378
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
379 float width = 0;
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
380 float height = 0;
1053
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
381 if (landscape) {
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
382 width = pageHeight;
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
383 height = pageWidth;
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
384 }
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
385 else {
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
386 width = pageWidth;
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
387 height = pageHeight;
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
388 }
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
389
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
390 float spaceX = width - marginLeft - marginRight;
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
391 if (chartWidth > spaceX) {
1053
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
392 log.warn("Histogram width is too big for pdf -> resize it now.");
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
393 double ratio = ((double)spaceX) / chartWidth;
1053
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
394 chartWidth *= ratio;
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
395 chartHeight *= ratio;
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
396 log.debug("Resized chart to " + chartWidth + "x" + chartHeight);
1053
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
397 }
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
398
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
399 float spaceY = height - marginTop - marginBottom;
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
400 if (chartHeight > spaceY) {
1053
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
401 log.warn("Histogram height is too big for pdf -> resize it now.");
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
402 double ratio = ((double)spaceY) / chartHeight;
1053
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
403 chartWidth *= ratio;
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
404 chartHeight *= ratio;
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
405 log.debug("Resized chart to " + chartWidth + "x" + chartHeight);
1053
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
406 }
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
407
640
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
408 Document document = null;
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
409 if (landscape) {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
410 document = new Document(page.rotate());
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
411 log.debug("Create landscape pdf.");
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
412 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
413 else
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
414 document = new Document(page);
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
415
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
416 try {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
417 PdfWriter writer = PdfWriter.getInstance(document, out);
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
418
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
419 document.addCreationDate();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
420 document.open();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
421
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
422 PdfContentByte content = writer.getDirectContent();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
423
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
424 int size = histograms.length;
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
425 for (int i = 0; i < size; i++) {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
426 if (i > 0) {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
427 document.newPage();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
428 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
429
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
430 JFreeChart chart = histograms[i].generateChart();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
431 PdfTemplate template = content.createTemplate(width, height);
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
432 Graphics2D graphics = template.createGraphics(width, height);
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
433
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
434 double[] origin = getCenteredAnchor(
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
435 marginLeft, marginRight, marginBottom, marginTop,
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
436 width, height,
1053
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
437 chartWidth, chartHeight);
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
438
640
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
439 Rectangle2D area = new Rectangle2D.Double(
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
440 origin[0], origin[1], chartWidth, chartHeight);
640
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
441
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
442 chart.draw(graphics, area);
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
443 graphics.dispose();
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
444 content.addTemplate(template, 0f, 0f);
640
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
445 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
446 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
447 catch (DocumentException de) {
1053
6169ddc827ac The format of a histogram pdf depends on the width and height specified by the user - or the default size (issue290).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
448 log.error("Error while exporting histogram to pdf.", de);
640
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
449 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
450 finally {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
451 document.close();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
452 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
453 }
1086
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
454
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
455
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
456 /**
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
457 * This method returns the anchor of the chart so that the chart is centered
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
458 * according to the given parameters.
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
459 *
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
460 * @param mLeft Left margin
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
461 * @param mRight Right margin
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
462 * @param mBottom Bottom margin
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
463 * @param mTop Top margin
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
464 * @param width The complete width of the drawing area.
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
465 * @param height The complete height of the drawing area.
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
466 * @param chartWidth The width of the chart.
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
467 * @param chartHeight The height of the chart.
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
468 *
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
469 * @return an array that contains the anchor for a chart with the given
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
470 * parameters. The first value is the x point, the second value is the y
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
471 * point.
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
472 */
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
473 public static double[] getCenteredAnchor(
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
474 double mLeft, double mRight, double mBottom, double mTop,
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
475 double width, double height,
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
476 double chartWidth, double chartHeight
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
477 ) {
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
478 if (log.isDebugEnabled()) {
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
479 log.debug("Calculate centered origin...");
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
480 log.debug("-> PDF width : " + width);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
481 log.debug("-> PDF height : " + height);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
482 log.debug("-> Chart width : " + chartWidth);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
483 log.debug("-> Chart height : " + chartHeight);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
484 log.debug("-> margin left : " + mLeft);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
485 log.debug("-> margin right : " + mRight);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
486 log.debug("-> margin bottom: " + mBottom);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
487 log.debug("-> margin top : " + mTop);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
488 }
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
489
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
490 double[] origin = new double[2];
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
491
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
492 double centerX = width / 2;
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
493 double centerY = height / 2;
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
494
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
495 origin[0] = centerX - chartWidth / 2;
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
496 origin[1] = centerY - chartHeight / 2;
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
497
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
498 origin[0] = origin[0] >= mLeft ? origin[0] : mLeft;
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
499 origin[1] = origin[1] >= mTop ? origin[1] : mTop;
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
500
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
501 if (log.isDebugEnabled()) {
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
502 log.debug("==> centered left origin: " + origin[0]);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
503 log.debug("==> centered top origin: " + origin[1]);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
504 }
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
505
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
506 return origin;
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
507 }
318
5f2820e821e0 Implemented a helper class for exporting charts. Adapted code.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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508 }
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18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
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509 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org