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  any library licensed under the Apache Software License,
  22  * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
  23  * (or with modified versions of the above that use the same license as the above),
  24  * and distribute linked combinations including the two.  You must obey the
  25  * GNU General Public License in all respects for all of the code used other than
  26  * the above mentioned libraries.  If you modify this file, you may extend this
  27  * exception to your version of the file, but you are not obligated to do so.
  28  * If you do not wish to do so, delete this exception statement from your version.
  29  */
  30
  31 package mircoders.producer;
  32
  33 import java.io.PrintWriter;
  34 import java.util.ArrayList;
  35 import java.util.HashMap;
  36 import java.util.Map;
  37
  38 import mir.entity.Entity;
  39 import mir.entity.EntityList;
  40 import mir.entity.adapter.EntityAdapter;
  41 import mir.log.LoggerToWriterAdapter;
  42 import mir.log.LoggerWrapper;
  43 import mir.misc.StringUtil;
  44 import mir.producer.ProducerFailure;
  45 import mir.producer.ProducerNode;
  46 import mir.util.CachingRewindableIterator;
  47 import mir.util.HTMLRoutines;
  48 import mir.util.ParameterExpander;
  49 import mircoders.entity.EntityContent;
  50 import mircoders.entity.EntityImages;
  51 import mircoders.storage.DatabaseContentToMedia;
  52
  53 //because images are returned as a template model!(maybe not needed after all!)
  54 //import freemarker.template.*;
  55
  56
  57 public class PDFPreFormattingProducerNode implements ProducerNode {
  58   private String contentKey;
  59   private int numLinesBetweenImages;
  60   private float contentAreaWidthCM;
  61   private float characterWidthCM;
  62   private float pixelWidthCM;
  63   private float lineHeightCM;
  64
  65   public PDFPreFormattingProducerNode(String aContentKey,String someNumLinesBetweenImages,String aContentAreaWidthCM,String aCharacterWidthCM,String aPixelWidthCM,String aLineHeightCM) {
  66     contentKey = aContentKey;
  67     numLinesBetweenImages=(new Integer(someNumLinesBetweenImages)).intValue();
  68     contentAreaWidthCM=(new Float(aContentAreaWidthCM)).floatValue();
  69     characterWidthCM=(new Float(aCharacterWidthCM)).floatValue();
  70     pixelWidthCM=(new Float(aPixelWidthCM)).floatValue();
  71     lineHeightCM=(new Float(aLineHeightCM)).floatValue();
  72
  73     //    float characterWidthCM = 0.17F;
  74     //float contentAreaWidthCM = 16;
  75     //float pixelWidthCM = .03F;
  76     //float lineHeightCM = .5F;
  77   }
  78
  79   public void produce(Map aValueMap, String aVerb, LoggerWrapper aLogger) throws ProducerFailure {
  80     Object data;
  81     Entity entity;
  82
  83     try {
  84       data = ParameterExpander.findValueForKey( aValueMap, contentKey );
  85
  86       if (! (data instanceof EntityAdapter)) {
  87         throw new ProducerFailure("PDFPreFormattingProducerNode: value of '"+contentKey+"' is not an EntityAdapter, but an " + data.getClass().getName(), null);
  88       }
  89
  90       entity = ((EntityAdapter) data).getEntity();
  91       if (! (entity instanceof EntityContent)) {
  92         throw new ProducerFailure("PDFPreFormattingProducerNode: value of '"+contentKey+"' is not a content EntityAdapter, but a " + entity.getClass().getName() + " adapter", null);
  93       }
  94
  95       int currentPosition = 0;
  96
  97       //int numLinesBetweenImages=3;
  98
  99
 100
 101
 102       int numCharsInAnImagelessRow = (new Float(numLinesBetweenImages * (contentAreaWidthCM/characterWidthCM))).intValue();
 103
 104       boolean outOfText = false;
 105
 106       ArrayList brokenUpContent = new ArrayList();
 107
 108
 109       EntityList images=DatabaseContentToMedia.getInstance().getImages((EntityContent)entity);
 110       String theContent = ((EntityContent) entity).getValue("content_data");
 111       //remove pesky characters
 112       theContent = HTMLRoutines.encodeXML(theContent);
 113       //put in the <BR> tags so we can turn them to empty blocks
 114       theContent = StringUtil.convertNewline2Break(theContent);
 115
 116       if (images == null){
 117           Map row = new HashMap();
 118           row.put("text",theContent);
 119           row.put("hasImage","0");
 120           brokenUpContent.add(row);
 121       }
 122       if (images != null){
 123           //need to add checks for out of content!
 124           Map row0 = new HashMap();
 125           if (numCharsInAnImagelessRow>(theContent).length()){
 126               row0.put("text",theContent);
 127               outOfText = true;
 128           }
 129           else {
 130               //break on words so we don't split html entities
 131               int lastSpaceAt = theContent.lastIndexOf(" ",numCharsInAnImagelessRow);
 132               row0.put("text",theContent.substring(0,lastSpaceAt));
 133               currentPosition=lastSpaceAt;
 134           }
 135           row0.put("hasImage","0");
 136           brokenUpContent.add(row0);
 137           aLogger.debug("CP1 is "+ currentPosition);
 138           while(images.hasNext()){
 139               Map row1 = new HashMap();
 140               Map row2 = new HashMap();
 141               EntityImages currentImage=(EntityImages) images.next();
 142               float img_width=(new Float(currentImage.getValue("img_width"))).floatValue();
 143               float img_height=(new Float(currentImage.getValue("img_height"))).floatValue();
 144
 145               //oversize images must be shrunk
 146               if (img_width>250){
 147                   img_height=(new Float((new Float(img_height*(250.0F/img_width))).intValue())).floatValue();
 148                   img_width=250.0F;
 149               }
 150
 151
 152               //calculate how much text goes in the column(use 8 pixels to pad the column)
 153               float text_widthCM = contentAreaWidthCM-((img_width+8)*pixelWidthCM);
 154               float number_of_lines = img_height*pixelWidthCM/lineHeightCM; //don't worry we will make it an int
 155               //add one line for image description
 156               int text_amount= (new Float((text_widthCM/characterWidthCM)*(number_of_lines+1))).intValue();
 157
 158               row1.put("text_widthCM",Float.toString(text_widthCM));
 159
 160               row1.put("img_title",currentImage.getValue("title"));
 161
 162               row1.put("img_width",Float.toString(img_width));
 163               row1.put("img_height",Float.toString(img_height));
 164
 165               aLogger.debug("img_width " +Float.toString(img_width));
 166               aLogger.debug("img_height "+Float.toString(img_height));
 167
 168               row1.put("img_src",currentImage.getValue("publish_path"));
 169               row1.put("hasImage","1");
 170               if (! outOfText){
 171                   try {
 172                       int lastSpaceAt = theContent.lastIndexOf(" ",currentPosition+text_amount);
 173                       row1.put("text",theContent.substring(currentPosition,lastSpaceAt));
 174                       currentPosition=lastSpaceAt;
 175                   }
 176                   catch (IndexOutOfBoundsException e){
 177                       row1.put("text",theContent.substring(currentPosition));
 178                       outOfText = true;
 179                           }
 180               }
 181               aLogger.debug("CP2 is "+ currentPosition);
 182               brokenUpContent.add(row1);
 183
 184               if (! outOfText){
 185                   try {
 186                       int lastSpaceAt = theContent.lastIndexOf(" ",currentPosition+numCharsInAnImagelessRow);
 187                       row2.put("text",theContent.substring(currentPosition,lastSpaceAt));
 188                       currentPosition=lastSpaceAt;
 189                   }
 190                   catch (IndexOutOfBoundsException e){
 191                       row2.put("text",theContent.substring(currentPosition));
 192                       outOfText = true;
 193                           }
 194               }
 195               row2.put("hasImage","0");
 196               brokenUpContent.add(row2);
 197
 198               aLogger.debug("CP3 is "+ currentPosition);
 199           }
 200           Map row3 = new HashMap();
 201           if (! outOfText){
 202               row3.put("text",theContent.substring(currentPosition));
 203               row3.put("hasImage","0");
 204               brokenUpContent.add(row3);
 205           }
 206
 207       }
 208
 209
 210
 211
 212
 213       ParameterExpander.setValueForKey(
 214                                        aValueMap,
 215                                        "data.formatted_content",
 216                                        new CachingRewindableIterator(brokenUpContent.iterator())
 217                                        );
 218
 219
 220     }
 221     catch (Throwable t) {
 222       aLogger.error("Error while formatting content for PDF: " + t.getMessage());
 223       t.printStackTrace(new PrintWriter(new LoggerToWriterAdapter(aLogger, LoggerWrapper.DEBUG_MESSAGE)));
 224     }
 225   }
 226 }
 227
 228
 229
 230