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1 package digilib.pdf;
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2
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3 import java.io.File;
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4 import java.io.IOException;
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5 import java.net.MalformedURLException;
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6 import java.net.URL;
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7
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8 import org.apache.log4j.Logger;
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9
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10 import com.itextpdf.text.Anchor;
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11 import com.itextpdf.text.BadElementException;
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12 import com.itextpdf.text.Chunk;
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13 import com.itextpdf.text.Element;
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14 import com.itextpdf.text.FontFactory;
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15 import com.itextpdf.text.Image;
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16 import com.itextpdf.text.Paragraph;
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17
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18 import digilib.io.DigilibInfoReader;
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19 import digilib.io.FileOpException;
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20 import digilib.servlet.PDFCache;
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21 import digilib.servlet.PDFRequest;
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22
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23 /** A class for the generation of title pages for the generated pdf documents.
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24 *
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25 *
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26 */
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27 public class PDFTitlePage {
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28
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29 private PDFRequest job_info = null;
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30 private DigilibInfoReader info_reader= null;
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31 protected static Logger logger = Logger.getLogger("digilib.servlet");
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32
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33
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34 /**
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35 * Initialize a TitlePage
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36 * @param pdfji
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37 */
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38 public PDFTitlePage(PDFRequest pdfji){
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39 job_info = pdfji;
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40
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41 // use MPIWG-style info.xml
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42 info_reader = getInfoXmlReader(pdfji);
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43 }
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44
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45 /**
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46 * @param pdfji
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47 * @return
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48 */
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49 protected DigilibInfoReader getInfoXmlReader(PDFRequest pdfji) {
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50 try {
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51 // try to load ../presentation/info.xml
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52 File imgDir = pdfji.getImageJobInformation().getFileDirectory().getDir();
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53 File docDir = imgDir.getParentFile();
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54 File infoFn = new File(new File(docDir, "presentation"), "info.xml");
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55 return new DigilibInfoReader(infoFn.getAbsolutePath());
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56 } catch (FileOpException e) {
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57 logger.warn("info.xml not found");
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58 }
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59 return null;
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60 }
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61
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62 /**
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63 * generate iText-PDF-Contents for the title page
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64 *
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65 * @return
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66 */
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67 public Element getPageContents(){
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68 Paragraph content = new Paragraph();
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69 content.setAlignment(Element.ALIGN_CENTER);
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70
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71 // add vertical whitespace
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72 for(int i=0; i<8; i++){
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73 content.add(Chunk.NEWLINE);
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74 }
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75
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76 // add logo
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77 content.add(getLogo());
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78 content.add(Chunk.NEWLINE);
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79 content.add(Chunk.NEWLINE);
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80
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81 // add title
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82 Anchor title = new Anchor(new Paragraph(getTitle(),FontFactory.getFont(FontFactory.HELVETICA,16)));
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83 String burl = job_info.getImageJobInformation().getAsString("base.url");
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84
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85 title.setReference(burl+"digilib.jsp?fn="+job_info.getImageJobInformation().getAsString("fn"));
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86 content.add(title);
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87 content.add(Chunk.NEWLINE);
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88
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89 // add author
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90 if(getDate()!=" ")
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91 content.add(new Paragraph(getAuthor()+" ("+getDate()+")",FontFactory.getFont(FontFactory.HELVETICA,14)));
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92 else
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93 content.add(new Paragraph(getAuthor(),FontFactory.getFont(FontFactory.HELVETICA,14)));
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94
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95 content.add(Chunk.NEWLINE);
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96
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97 // add page numbers
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98 content.add(new Paragraph(getPages(), FontFactory.getFont(FontFactory.HELVETICA, 12)));
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99
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100
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101 content.add(Chunk.NEWLINE);
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102 content.add(Chunk.NEWLINE);
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103 content.add(Chunk.NEWLINE);
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104
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105 // add digilib version
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106 content.add(new Paragraph(getDigilibVersion(),FontFactory.getFont(FontFactory.HELVETICA,10)));
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107
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108 for(int i=0; i<8; i++){
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109 content.add(Chunk.NEWLINE);
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110 }
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111 Anchor address = new Anchor(
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112 new Paragraph(burl+"digilib.jsp?fn="+job_info.getImageJobInformation().getAsString("fn"), FontFactory.getFont(FontFactory.COURIER, 9))
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113 );
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114 address.setReference(burl+"digilib.jsp?fn="+job_info.getImageJobInformation().getAsString("fn"));
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115
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116 content.add(address);
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117
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118
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119 return content;
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120 }
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121
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122 /*
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123 * Methods for the different attributes.
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124 *
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125 */
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126
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127 private Image getLogo(){
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128 try {
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129 URL url = new URL(job_info.getDlConfig().getAsString("pdf-logo"));
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130 if(url!=null && !url.equals("")){
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131 Image logo = Image.getInstance(url);
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132 logo.setAlignment(Element.ALIGN_CENTER);
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133 return logo;
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134 }
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135 } catch (BadElementException e) {
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136 logger.error(e.getMessage());
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137 } catch (MalformedURLException e) {
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138 logger.error(e.getMessage());
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139 } catch (IOException e) {
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140 logger.error(e.getMessage());
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141 }
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142 return null;
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143 }
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144
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145 private String getTitle(){
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146 if(info_reader.hasInfo())
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147 return info_reader.getAsString("title");
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148 else
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149 return job_info.getImageJobInformation().getAsString("fn");
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150 }
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151
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152 private String getAuthor(){
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153 if(info_reader.hasInfo())
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154 return info_reader.getAsString("author");
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155 else
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156 return " ";
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157 }
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158
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159 private String getDate(){
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160 if(info_reader.hasInfo())
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161 return info_reader.getAsString("date");
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162 else
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163 return " ";
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164 }
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165
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166 private String getPages(){
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167 return "Pages "+job_info.getAsString("pgs") + " (scan page numbers)";
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168 }
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169
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170 private String getDigilibVersion(){
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171 return "Digilib PDFMaker v."+PDFCache.version;
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172 }
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173
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174 }
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