source/mircoders/producer/PDFPreFormattingProducerNode.java

   1 /*
   2  * Copyright (C) 2001, 2002  The Mir-coders group
   3  *
   4  * This file is part of Mir.
   5  *
   6  * Mir is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Mir is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with Mir; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  * In addition, as a special exception, The Mir-coders gives permission to link
  21  * the code of this program with the com.oreilly.servlet library, any library
  22  * licensed under the Apache Software License, The Sun (tm) Java Advanced
  23  * Imaging library (JAI), The Sun JIMI library (or with modified versions of
  24  * the above that use the same license as the above), and distribute linked
  25  * combinations including the two.  You must obey the GNU General Public
  26  * License in all respects for all of the code used other than the above
  27  * mentioned libraries.  If you modify this file, you may extend this exception
  28  * to your version of the file, but you are not obligated to do so.  If you do
  29  * not wish to do so, delete this exception statement from your version.
  30  */
  31
  32 package mircoders.producer;
  33
  34 import java.util.*;
  35 import java.io.*;
  36
  37 import mir.util.*;
  38 import mir.producer.*;
  39 import mir.entity.*;
  40 import mir.entity.adapter.*;
  41 import mir.log.*;
  42
  43 import mircoders.entity.*;
  44 import mircoders.storage.*;
  45
  46 //because images are returned as a template model!(maybe not needed after all!)
  47 //import freemarker.template.*;
  48
  49
  50 public class PDFPreFormattingProducerNode implements ProducerNode {
  51   private String contentKey;
  52   private int numLinesBetweenImages;
  53   private float contentAreaWidthCM;
  54   private float characterWidthCM;
  55   private float pixelWidthCM;
  56   private float lineHeightCM;
  57
  58   public PDFPreFormattingProducerNode(String aContentKey,String someNumLinesBetweenImages,String aContentAreaWidthCM,String aCharacterWidthCM,String aPixelWidthCM,String aLineHeightCM) {
  59     contentKey = aContentKey;
  60     numLinesBetweenImages=(new Integer(someNumLinesBetweenImages)).intValue();
  61     contentAreaWidthCM=(new Float(aContentAreaWidthCM)).floatValue();
  62     characterWidthCM=(new Float(aCharacterWidthCM)).floatValue();
  63     pixelWidthCM=(new Float(aPixelWidthCM)).floatValue();
  64     lineHeightCM=(new Float(aLineHeightCM)).floatValue();
  65
  66     //    float characterWidthCM = 0.17F;
  67     //float contentAreaWidthCM = 16;
  68     //float pixelWidthCM = .03F;
  69     //float lineHeightCM = .5F;
  70   }
  71
  72   public void produce(Map aValueMap, String aVerb, LoggerWrapper aLogger) throws ProducerFailure {
  73     Object data;
  74     Entity entity;
  75
  76     try {
  77       data = ParameterExpander.findValueForKey( aValueMap, contentKey );
  78
  79       if (! (data instanceof EntityAdapter)) {
  80         throw new ProducerFailure("ContentMarkingProducerNode: value of '"+contentKey+"' is not an EntityAdapter, but an " + data.getClass().getName(), null);
  81       }
  82
  83       entity = ((EntityAdapter) data).getEntity();
  84       if (! (entity instanceof EntityContent)) {
  85         throw new ProducerFailure("ContentMarkingProducerNode: value of '"+contentKey+"' is not a content EntityAdapter, but a " + entity.getClass().getName() + " adapter", null);
  86       }
  87
  88       int currentPosition = 0;
  89
  90       //int numLinesBetweenImages=3;
  91
  92
  93
  94
  95       int numCharsInAnImagelessRow = (new Float(numLinesBetweenImages * (contentAreaWidthCM/characterWidthCM))).intValue();
  96
  97       boolean outOfText = false;
  98
  99       ArrayList brokenUpContent = new ArrayList();
 100
 101
 102       EntityList images=DatabaseContentToMedia.getInstance().getImages((EntityContent)entity);
 103       String theContent = ((EntityContent) entity).getValue("content_data");
 104       if (images == null){
 105           HashMap row = new HashMap();
 106           row.put("text",theContent);
 107           row.put("hasImage","0");
 108           brokenUpContent.add(row);
 109       }
 110       if (images != null){
 111           //need to add checks for out of content!
 112           HashMap row0 = new HashMap();
 113           if (numCharsInAnImagelessRow>(theContent).length()){
 114               row0.put("text",theContent);
 115               outOfText = true;
 116           }
 117           else {
 118               //break on words so we don't split html entities
 119               int lastSpaceAt = theContent.lastIndexOf(" ",numCharsInAnImagelessRow);
 120               row0.put("text",theContent.substring(0,lastSpaceAt));
 121               currentPosition=lastSpaceAt;
 122           }
 123           row0.put("hasImage","0");
 124           brokenUpContent.add(row0);
 125           aLogger.debug("CP1 is "+ currentPosition);
 126           while(images.hasNext()){
 127               HashMap row1 = new HashMap();
 128               HashMap row2 = new HashMap();
 129               EntityImages currentImage=(EntityImages) images.next();
 130               float img_width=(new Float(currentImage.getValue("img_width"))).floatValue();
 131               float img_height=(new Float(currentImage.getValue("img_height"))).floatValue();
 132
 133               //oversize images must be shrunk
 134               if (img_width>400){
 135                   img_height=(new Float((new Float(img_height*(400.0F/img_width))).intValue())).floatValue();
 136                   img_width=400.0F;
 137               }
 138
 139
 140               //calculate how much text goes in the column(use 8 pixels to pad the column)
 141               float text_widthCM = contentAreaWidthCM-((img_width+8)*pixelWidthCM);
 142               float number_of_lines = img_height*pixelWidthCM/lineHeightCM; //don't worry we will make it an int
 143               //add one line for image description
 144               int text_amount= (new Float((text_widthCM/characterWidthCM)*(number_of_lines+1))).intValue();
 145
 146               row1.put("text_widthCM",Float.toString(text_widthCM));
 147
 148               row1.put("img_title",currentImage.getValue("title"));
 149
 150               row1.put("img_width",Float.toString(img_width));
 151               row1.put("img_height",Float.toString(img_height));
 152
 153               aLogger.debug("img_width " +Float.toString(img_width));
 154               aLogger.debug("img_height "+Float.toString(img_height));
 155
 156               row1.put("img_src",currentImage.getValue("publish_path"));
 157               row1.put("hasImage","1");
 158               if (! outOfText){
 159                   try {
 160                       int lastSpaceAt = theContent.lastIndexOf(" ",currentPosition+text_amount);
 161                       row1.put("text",theContent.substring(currentPosition,lastSpaceAt));
 162                       currentPosition=lastSpaceAt;
 163                   }
 164                   catch (IndexOutOfBoundsException e){
 165                       row1.put("text",theContent.substring(currentPosition));
 166                       outOfText = true;
 167                           }
 168               }
 169               aLogger.debug("CP2 is "+ currentPosition);
 170               brokenUpContent.add(row1);
 171
 172               if (! outOfText){
 173                   try {
 174                       int lastSpaceAt = theContent.lastIndexOf(" ",currentPosition+numCharsInAnImagelessRow);
 175                       row2.put("text",theContent.substring(currentPosition,lastSpaceAt));
 176                       currentPosition=lastSpaceAt;
 177                   }
 178                   catch (IndexOutOfBoundsException e){
 179                       row2.put("text",theContent.substring(currentPosition));
 180                       outOfText = true;
 181                           }
 182               }
 183               row2.put("hasImage","0");
 184               brokenUpContent.add(row2);
 185
 186               aLogger.debug("CP3 is "+ currentPosition);
 187           }
 188           HashMap row3 = new HashMap();
 189           if (! outOfText){
 190               row3.put("text",theContent.substring(currentPosition));
 191               row3.put("hasImage","0");
 192               brokenUpContent.add(row3);
 193           }
 194
 195       }
 196
 197
 198
 199
 200
 201       ParameterExpander.setValueForKey(
 202                                        aValueMap,
 203                                        "data.formatted_content",
 204                                        new CachingRewindableIterator(brokenUpContent.iterator())
 205                                        );
 206
 207
 208     }
 209     catch (Throwable t) {
 210       aLogger.error("Error while formatting content for PDF: " + t.getMessage());
 211       t.printStackTrace(new PrintWriter(new LoggerToWriterAdapter(aLogger, LoggerWrapper.DEBUG_MESSAGE)));
 212     }
 213   }
 214 }
 215
 216
 217
 218