Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/exports/ChartExportHelper.java @ 1087:92fce3b3d07f

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Centered histograms in pdf exports. gnv-artifacts/trunk@1189 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 10 Jun 2010 09:23:33 +0000
parents f2127cd0fe31
children f953c9a559d8
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.artifacts.CallContext;
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14 import de.intevation.artifactdatabase.XMLUtils;
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15
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16 import de.intevation.gnv.chart.Chart;
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18 import java.awt.Graphics2D;
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19 import java.awt.Transparency;
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20
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21 import java.awt.geom.Rectangle2D.Double;
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23 import java.awt.geom.Rectangle2D;
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25 import java.awt.image.BufferedImage;
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26
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27 import java.io.IOException;
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28 import java.io.OutputStream;
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29 import java.io.OutputStreamWriter;
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30 import java.io.UnsupportedEncodingException;
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32 import javax.imageio.ImageIO;
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34 import org.apache.batik.svggen.SVGGraphics2D;
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35 import org.apache.batik.svggen.SVGGraphics2DIOException;
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37 import org.apache.log4j.Logger;
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38
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39 import org.jfree.chart.JFreeChart;
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40
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41 /**
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42 * This class is a helper class which supports some methods to export charts
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43 * into specific formats.
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44 *
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45 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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46 */
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47 public class ChartExportHelper {
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48
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49 /**
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50 * Constant field to define A4 as default page size.
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51 */
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52 private static final String DEFAULT_PAGE_SIZE = "A4";
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53
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54 /**
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55 * Constant field to define UTF-8 as default encoding.
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56 */
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57 private static final String DEFAULT_ENCODING = "UTF-8";
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59 /**
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60 * Logger used for logging with log4j.
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61 */
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62 private static Logger log = Logger.getLogger(ChartExportHelper.class);
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64
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65 /**
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66 * A method to export a <code>JFreeChart</code> as image to an
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67 * <code>OutputStream</code> with a given format, width and height.
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68 *
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69 * @param out OutputStream
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70 * @param chart JFreeChart object to be exported.
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71 * @param format Format (e.g. png, gif, jpg)
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72 * @param width Width, the image used to be
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73 * @param height Height, the image used to be
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74 *
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75 * @throws IOException if writing image to OutputStream failed.
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76 */
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77 public static void exportImage(
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78 OutputStream out,
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79 JFreeChart chart,
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80 String format,
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81 int width,
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82 int height
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83 )
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84 throws IOException
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85 {
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86 log.info("export chart as png");
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87
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88 ImageIO.write(
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89 chart.createBufferedImage(
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90 width, height, Transparency.BITMASK, null
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91 ),
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92 format,
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93 out
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94 );
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95 }
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98 /**
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99 * A method to export a <code>JFreeChart</code> histogram as image to an
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100 * <code>OutputStream</code> with a given format, width and height.
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101 *
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102 * @param out OutputStream
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103 * @param histograms Array of {@link de.intevation.gnv.chart.Chart} objects
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104 * @param format A format (e.g. png, gif, jpg)
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105 * @param width Width the image used to be
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106 * @param height Height the image used to be
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107 *
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108 * @throws IOException if writing image to OutputStream failed.
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109 */
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110 public static void exportHistograms(
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111 OutputStream out,
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112 Chart[] histograms,
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113 String format,
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114 int width,
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115 int height)
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116 throws IOException
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117 {
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118 log.info("export histograms");
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119
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120 int size = histograms.length;
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121 BufferedImage image = new BufferedImage(
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122 width, height*size, BufferedImage.TYPE_INT_RGB);
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123 Graphics2D g = image.createGraphics();
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124
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125 for (int i = 0; i < size; i++) {
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126 JFreeChart chart = histograms[i].generateChart();
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127 chart.draw(g, new Rectangle2D.Double(0.0D, i*height, width, height));
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128 }
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129 g.finalize();
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130
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131 ImageIO.write(image, format, out);
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132 }
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133
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134
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135 /**
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136 * A method to export a <code>JFreeChart</code> histogram as SVG to an
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137 * <code>OutputStream</code>.
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138 *
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139 * @param out OutputStream
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140 * @param histograms Array of {@link de.intevation.gnv.chart.Chart}
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141 * @param encoding Encoding, defaults to {@link #DEFAULT_ENCODING} if null
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142 * @param width Width the svg used to be
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143 * @param height Height the svg used to be
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144 */
639
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145 public static void exportHistogramsAsSVG(
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146 OutputStream out,
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147 Chart[] histograms,
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148 String encoding,
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149 int width,
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150 int height
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151 ) {
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152 log.info("export histograms as svg");
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153
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154 if (encoding == null)
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155 encoding = DEFAULT_ENCODING;
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156
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157 org.w3c.dom.Document document = XMLUtils.newDocument();
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158 SVGGraphics2D graphics = new SVGGraphics2D(document);
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159
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160 int size = histograms.length;
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161 for (int i = 0; i < size; i++) {
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162 JFreeChart chart = histograms[i].generateChart();
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163 chart.draw(graphics, new Rectangle2D.Double(
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164 0.0D, i*height,width,height));
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165 }
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166 graphics.finalize();
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167
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168 try {
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169 graphics.stream(new OutputStreamWriter(out, encoding));
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170 }
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171 catch (SVGGraphics2DIOException svge) {
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172 log.error("Error while writing svg export to output stream.", svge);
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173 }
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174 catch (UnsupportedEncodingException uee) {
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175 log.error("Unsupported encoding: " + encoding, uee);
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176 }
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177 }
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178
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179
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180 /**
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181 * A method to export a <code>JFreeChart</code> as SVG to an
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182 * <code>OutputStream</code>.
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183 *
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184 * @param out OutputStream
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185 * @param chart JFreeChart to be exported
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186 * @param encoding Encoding, defaults to {@link #DEFAULT_ENCODING} if null
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187 * @param width Width the svg used to be
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188 * @param height Height the svg used to be
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189 */
321
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190 public static void exportSVG(
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191 OutputStream out,
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192 JFreeChart chart,
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193 String encoding,
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194 int width,
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195 int height
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196 ) {
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197 log.info("export chart as svg");
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198
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199 if (encoding == null)
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200 encoding = DEFAULT_ENCODING;
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201
323
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202 org.w3c.dom.Document document = XMLUtils.newDocument();
321
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203 SVGGraphics2D graphics = new SVGGraphics2D(document);
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204
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205 chart.draw(graphics, new Rectangle2D.Double(0.0D, 0.0D,width,height));
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206
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207 try {
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208 graphics.stream(new OutputStreamWriter(out, encoding));
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209 }
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210 catch (SVGGraphics2DIOException svge) {
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211 log.error("Error while writing svg export to output stream.", svge);
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212 }
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213 catch (UnsupportedEncodingException uee) {
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214 log.error("Unsupported encoding: " + encoding, uee);
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215 }
318
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216 }
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217
320
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218
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219 /**
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220 * A method to export a <code>JFreeChart</code> as PDF to an
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221 * <code>OutputStream</code>.
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222 *
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223 * @param out OutputStream
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224 * @param chart JFreeChart
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225 * @param pageFormat String to specify a page format, {@link
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226 * #DEFAULT_PAGE_SIZE} is used if no pageFormat is given
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227 * @param landscape If this is true, the pdf is delivered in landscape
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228 * format
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229 * @param marginLeft Space to left border
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230 * @param marginRight Space to right border
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231 * @param marginTop Space to upper border
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232 * @param marginBottom Space to lower border
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233 */
320
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234 public static void exportPDF(
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235 OutputStream out,
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236 JFreeChart chart,
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237 String pageFormat,
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238 float marginLeft,
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239 float marginRight,
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240 float marginTop,
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241 float marginBottom,
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242 CallContext context
320
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243 ) {
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244 log.info("export chart as pdf.");
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245
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246 if (pageFormat == null)
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247 pageFormat = DEFAULT_PAGE_SIZE;
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248
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249 // max size of the chart
320
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250 Rectangle page = PageSize.getRectangle(pageFormat);
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251 float pageWidth = page.getWidth();
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252 float pageHeight = page.getHeight();
320
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253
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254 // the chart width
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255 int chartWidth = (Integer) context.getContextValue("chart.width");
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256 int chartHeight = (Integer) context.getContextValue("chart.height");
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257
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258 boolean landscape = chartWidth > chartHeight ? true : false;
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259
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260 float width = 0;
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261 float height = 0;
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262 if (landscape) {
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263 width = pageHeight;
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264 height = pageWidth;
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265 }
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266 else {
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267 width = pageWidth;
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268 height = pageHeight;
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269 }
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270
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271 float spaceX = width - marginLeft - marginRight;
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272 if (chartWidth > spaceX) {
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273 log.warn("Width of the chart is too big for pdf -> resize it now.");
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274 double ratio = ((double)spaceX) / chartWidth;
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275 chartWidth *= ratio;
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276 chartHeight *= ratio;
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277 log.debug("Resized chart to " + chartWidth + "x" + chartHeight);
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278 }
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279
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280 float spaceY = height - marginTop - marginBottom;
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281 if (chartHeight > spaceY) {
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282 log.warn("Height of the chart is too big for pdf -> resize it now.");
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283 double ratio = ((double)spaceY) / chartHeight;
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284 chartWidth *= ratio;
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285 chartHeight *= ratio;
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286 log.debug("Resized chart to " + chartWidth + "x" + chartHeight);
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287 }
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288
320
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289 Document document = null;
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290 if (landscape) {
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291 document = new Document(page.rotate());
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292 log.debug("Create landscape pdf.");
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293 }
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294 else
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295 document = new Document(page);
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296
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297 try {
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298 PdfWriter writer = PdfWriter.getInstance(document, out);
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299
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300 document.addSubject(chart.getTitle().getText());
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301 document.addCreationDate();
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302 document.open();
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303
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304 PdfContentByte content = writer.getDirectContent();
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305
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306 PdfTemplate template = content.createTemplate(width, height);
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307 Graphics2D graphics = template.createGraphics(width, height);
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308
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309 double[] origin = getCenteredAnchor(
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310 marginLeft, marginRight, marginBottom, marginTop,
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311 width, height,
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312 chartWidth, chartHeight);
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313
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314 Rectangle2D area = new Rectangle2D.Double(
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315 origin[0], origin[1], chartWidth, chartHeight);
320
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316
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317 chart.draw(graphics, area);
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318 graphics.dispose();
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319 content.addTemplate(template, 0f, 0f);
320
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320 }
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diff changeset
321 catch (DocumentException de) {
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322 log.error("Error while exporting chart to pdf.", de);
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323 }
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diff changeset
324 finally {
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325 document.close();
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diff changeset
326 }
318
5f2820e821e0 Implemented a helper class for exporting charts. Adapted code.
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diff changeset
327 }
640
e5f1e868ee3e Implementedr histogram pdf export.
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328
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329
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diff changeset
330 /**
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331 * A method to export <code>JFreeChart</code> histograms as PDF to an
a0e63136954e Added and repaired javadoc in de.intevation.gnv.exports package.
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diff changeset
332 * <code>OutputStream</code>. Each histogram contained in histograms is
a0e63136954e Added and repaired javadoc in de.intevation.gnv.exports package.
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333 * drawn to an own page in the resulting pdf.
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diff changeset
334 *
a0e63136954e Added and repaired javadoc in de.intevation.gnv.exports package.
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diff changeset
335 * @param out OutputStream
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diff changeset
336 * @param histograms JFreeChart histograms
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337 * @param pageFormat String to specify a page format, {@link
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22c18083225e Removed compiler warnings while JavaDoc generation.
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diff changeset
338 * #DEFAULT_PAGE_SIZE} is used if no pageFormat is given
771
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339 * @param landscape If this is true, the pdf is delivered in landscape
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diff changeset
340 * format
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diff changeset
341 * @param marginLeft Space to left border
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diff changeset
342 * @param marginRight Space to right border
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diff changeset
343 * @param marginTop Space to upper border
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344 * @param marginBottom Space to lower border
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diff changeset
345 */
640
e5f1e868ee3e Implementedr histogram pdf export.
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346 public static void exportHistogramsAsPDF(
e5f1e868ee3e Implementedr histogram pdf export.
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347 OutputStream out,
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348 Chart[] histograms,
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diff changeset
349 String pageFormat,
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diff changeset
350 float marginLeft,
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diff changeset
351 float marginRight,
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diff changeset
352 float marginTop,
1053
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
353 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
354 CallContext context
640
e5f1e868ee3e Implementedr histogram pdf export.
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diff changeset
355 ) {
e5f1e868ee3e Implementedr histogram pdf export.
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diff changeset
356 log.info("export histogram as pdf.");
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diff changeset
357
e5f1e868ee3e Implementedr histogram pdf export.
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diff changeset
358 if (pageFormat == null)
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diff changeset
359 pageFormat = DEFAULT_PAGE_SIZE;
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diff changeset
360
e5f1e868ee3e Implementedr histogram pdf export.
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diff changeset
361 Rectangle page = PageSize.getRectangle(pageFormat);
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diff changeset
362 float pageWidth = page.getWidth();
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diff changeset
363 float pageHeight = page.getHeight();
640
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diff changeset
364
1053
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
365 // 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
366 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
367 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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diff changeset
368
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
369 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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370
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diff changeset
371 float width = 0;
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diff changeset
372 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).
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diff changeset
373 if (landscape) {
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 width = pageHeight;
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 height = pageWidth;
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
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 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
378 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
379 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
380 }
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
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
382 float spaceX = width - marginLeft - marginRight;
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
383 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
384 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
385 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
386 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
387 chartHeight *= ratio;
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
388 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
389 }
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
390
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
391 float spaceY = height - marginTop - marginBottom;
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
392 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
393 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
394 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
395 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
396 chartHeight *= ratio;
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
397 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
398 }
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
399
640
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
400 Document document = null;
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
401 if (landscape) {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
402 document = new Document(page.rotate());
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
403 log.debug("Create landscape pdf.");
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
404 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
405 else
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
406 document = new Document(page);
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
407
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
408 try {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
409 PdfWriter writer = PdfWriter.getInstance(document, out);
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
410
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
411 document.addCreationDate();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
412 document.open();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
413
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
414 PdfContentByte content = writer.getDirectContent();
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 int size = histograms.length;
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
417 for (int i = 0; i < size; i++) {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
418 if (i > 0) {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
419 document.newPage();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
420 }
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 JFreeChart chart = histograms[i].generateChart();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
423 PdfTemplate template = content.createTemplate(width, height);
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
424 Graphics2D graphics = template.createGraphics(width, height);
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
425
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
426 double[] origin = getCenteredAnchor(
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
427 marginLeft, marginRight, marginBottom, marginTop,
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
428 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
429 chartWidth, chartHeight);
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
430
640
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
431 Rectangle2D area = new Rectangle2D.Double(
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
432 origin[0], origin[1], chartWidth, chartHeight);
640
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
433
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
434 chart.draw(graphics, area);
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
435 graphics.dispose();
1087
92fce3b3d07f Centered histograms in pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1086
diff changeset
436 content.addTemplate(template, 0f, 0f);
640
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
437 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
438 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
439 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
440 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
441 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
442 finally {
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
443 document.close();
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
444 }
e5f1e868ee3e Implementedr histogram pdf export.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 639
diff changeset
445 }
1086
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
446
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
447
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
448 /**
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
449 * 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
450 * according to the given parameters.
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
451 *
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
452 * @param mLeft Left margin
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
453 * @param mRight Right margin
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
454 * @param mBottom Bottom margin
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
455 * @param mTop Top margin
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
456 * @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
457 * @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
458 * @param chartWidth The width of the chart.
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
459 * @param chartHeight The height of the chart.
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
460 *
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
461 * @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
462 * 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
463 * point.
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
464 */
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
465 public static double[] getCenteredAnchor(
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
466 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
467 double width, double height,
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
468 double chartWidth, double chartHeight
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
469 ) {
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
470 if (log.isDebugEnabled()) {
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
471 log.debug("Calculate centered origin...");
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
472 log.debug("-> PDF width : " + width);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
473 log.debug("-> PDF height : " + height);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
474 log.debug("-> Chart width : " + chartWidth);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
475 log.debug("-> Chart height : " + chartHeight);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
476 log.debug("-> margin left : " + mLeft);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
477 log.debug("-> margin right : " + mRight);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
478 log.debug("-> margin bottom: " + mBottom);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
479 log.debug("-> margin top : " + mTop);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
480 }
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
481
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
482 double[] origin = new double[2];
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
483
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
484 double centerX = width / 2;
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
485 double centerY = height / 2;
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
486
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
487 origin[0] = centerX - chartWidth / 2;
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
488 origin[1] = centerY - chartHeight / 2;
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 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
491 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
492
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
493 if (log.isDebugEnabled()) {
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
494 log.debug("==> centered left origin: " + origin[0]);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
495 log.debug("==> centered top origin: " + origin[1]);
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
496 }
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 return origin;
f2127cd0fe31 Centered charts in a pdf exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1056
diff changeset
499 }
318
5f2820e821e0 Implemented a helper class for exporting charts. Adapted code.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
500 }
320
18302372703f Implemented pdf export of charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 318
diff changeset
501 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org