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