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.*;
  35
  36 import mir.entity.Entity;
  37 import mir.entity.EntityBrowser;
  38 import mir.entity.adapter.EntityAdapter;
  39 import mir.log.LoggerToWriterAdapter;
  40 import mir.log.LoggerWrapper;
  41 import mir.misc.StringUtil;
  42 import mir.producer.ProducerFailure;
  43 import mir.producer.ProducerNode;
  44 import mir.util.CachingRewindableIterator;
  45 import mir.util.HTMLRoutines;
  46 import mir.util.ParameterExpander;
  47 import mircoders.entity.EntityContent;
  48 import mircoders.entity.EntityImages;
  49 import mircoders.storage.DatabaseImages;
  50
  51
  52 public class PDFPreFormattingProducerNode implements ProducerNode {
  53   private String contentKey;
  54   private int numLinesBetweenImages;
  55   private float contentAreaWidthCM;
  56   private float characterWidthCM;
  57   private float pixelWidthCM;
  58   private float lineHeightCM;
  59
  60   public PDFPreFormattingProducerNode(String aContentKey,String someNumLinesBetweenImages,String aContentAreaWidthCM,String aCharacterWidthCM,String aPixelWidthCM,String aLineHeightCM) {
  61     contentKey = aContentKey;
  62     numLinesBetweenImages=(new Integer(someNumLinesBetweenImages)).intValue();
  63     contentAreaWidthCM=(new Float(aContentAreaWidthCM)).floatValue();
  64     characterWidthCM=(new Float(aCharacterWidthCM)).floatValue();
  65     pixelWidthCM=(new Float(aPixelWidthCM)).floatValue();
  66     lineHeightCM=(new Float(aLineHeightCM)).floatValue();
  67
  68     //    float characterWidthCM = 0.17F;
  69     //float contentAreaWidthCM = 16;
  70     //float pixelWidthCM = .03F;
  71     //float lineHeightCM = .5F;
  72   }
  73
  74   public void produce(Map aValueMap, String aVerb, LoggerWrapper aLogger) throws ProducerFailure {
  75     Object data;
  76     Entity entity;
  77
  78     try {
  79       data = ParameterExpander.findValueForKey( aValueMap, contentKey );
  80
  81       if (! (data instanceof EntityAdapter)) {
  82         throw new ProducerFailure("PDFPreFormattingProducerNode: value of '"+contentKey+"' is not an EntityAdapter, but an " + data.getClass().getName(), null);
  83       }
  84
  85       entity = ((EntityAdapter) data).getEntity();
  86       if (! (entity instanceof EntityContent)) {
  87         throw new ProducerFailure("PDFPreFormattingProducerNode: value of '"+contentKey+"' is not a content EntityAdapter, but a " + entity.getClass().getName() + " adapter", null);
  88       }
  89
  90       int currentPosition = 0;
  91
  92       //int numLinesBetweenImages=3;
  93
  94
  95
  96
  97       int numCharsInAnImagelessRow = (new Float(numLinesBetweenImages * (contentAreaWidthCM/characterWidthCM))).intValue();
  98
  99       boolean outOfText = false;
 100
 101       ArrayList brokenUpContent = new ArrayList();
 102
 103
 104       List extraTables = new ArrayList();
 105       extraTables.add("content_x_media cxm");
 106       Iterator images = new EntityBrowser(
 107         DatabaseImages.getInstance(), "i", extraTables,
 108           "cxm.content_id="+entity.getId()+"and cxm.media_id=i.id",
 109           "i.id desc", 30, -1, 0);
 110
 111       String theContent = ((EntityContent) entity).getFieldValue("content_data");
 112       //remove pesky characters
 113       theContent = HTMLRoutines.encodeXML(theContent);
 114       //put in the <BR> tags so we can turn them to empty blocks
 115       theContent = StringUtil.convertNewline2Break(theContent);
 116
 117       if (images == null){
 118           Map row = new HashMap();
 119           row.put("text",theContent);
 120           row.put("hasImage","0");
 121           brokenUpContent.add(row);
 122       }
 123       if (images != null){
 124           //need to add checks for out of content!
 125           Map row0 = new HashMap();
 126           if (numCharsInAnImagelessRow>(theContent).length()){
 127               row0.put("text",theContent);
 128               outOfText = true;
 129           }
 130           else {
 131               //break on words so we don't split html entities
 132               int lastSpaceAt = theContent.lastIndexOf(" ",numCharsInAnImagelessRow);
 133               row0.put("text",theContent.substring(0,lastSpaceAt));
 134               currentPosition=lastSpaceAt;
 135           }
 136           row0.put("hasImage","0");
 137           brokenUpContent.add(row0);
 138           aLogger.debug("CP1 is "+ currentPosition);
 139           while(images.hasNext()){
 140               Map row1 = new HashMap();
 141               Map row2 = new HashMap();
 142               EntityImages currentImage=(EntityImages) images.next();
 143               float img_width=(new Float(currentImage.getFieldValue("img_width"))).floatValue();
 144               float img_height=(new Float(currentImage.getFieldValue("img_height"))).floatValue();
 145
 146               //oversize images must be shrunk
 147               if (img_width>250){
 148                   img_height=(new Float((new Float(img_height*(250.0F/img_width))).intValue())).floatValue();
 149                   img_width=250.0F;
 150               }
 151
 152
 153               //calculate how much text goes in the column(use 8 pixels to pad the column)
 154               float text_widthCM = contentAreaWidthCM-((img_width+8)*pixelWidthCM);
 155               float number_of_lines = img_height*pixelWidthCM/lineHeightCM; //don't worry we will make it an int
 156               //add one line for image description
 157               int text_amount= (new Float((text_widthCM/characterWidthCM)*(number_of_lines+1))).intValue();
 158
 159               row1.put("text_widthCM",Float.toString(text_widthCM));
 160
 161               row1.put("img_title",currentImage.getFieldValue("title"));
 162
 163               row1.put("img_width",Float.toString(img_width));
 164               row1.put("img_height",Float.toString(img_height));
 165
 166               aLogger.debug("img_width " +Float.toString(img_width));
 167               aLogger.debug("img_height "+Float.toString(img_height));
 168
 169               row1.put("img_src",currentImage.getFieldValue("publish_path"));
 170               row1.put("hasImage","1");
 171               if (! outOfText){
 172                   try {
 173                       int lastSpaceAt = theContent.lastIndexOf(" ",currentPosition+text_amount);
 174                       row1.put("text",theContent.substring(currentPosition,lastSpaceAt));
 175                       currentPosition=lastSpaceAt;
 176                   }
 177                   catch (IndexOutOfBoundsException e){
 178                       row1.put("text",theContent.substring(currentPosition));
 179                       outOfText = true;
 180                           }
 181               }
 182               aLogger.debug("CP2 is "+ currentPosition);
 183               brokenUpContent.add(row1);
 184
 185               if (! outOfText){
 186                   try {
 187                       int lastSpaceAt = theContent.lastIndexOf(" ",currentPosition+numCharsInAnImagelessRow);
 188                       row2.put("text",theContent.substring(currentPosition,lastSpaceAt));
 189                       currentPosition=lastSpaceAt;
 190                   }
 191                   catch (IndexOutOfBoundsException e){
 192                       row2.put("text",theContent.substring(currentPosition));
 193                       outOfText = true;
 194                           }
 195               }
 196               row2.put("hasImage","0");
 197               brokenUpContent.add(row2);
 198
 199               aLogger.debug("CP3 is "+ currentPosition);
 200           }
 201           Map row3 = new HashMap();
 202           if (! outOfText){
 203               row3.put("text",theContent.substring(currentPosition));
 204               row3.put("hasImage","0");
 205               brokenUpContent.add(row3);
 206           }
 207
 208       }
 209
 210
 211
 212
 213
 214       ParameterExpander.setValueForKey(
 215                                        aValueMap,
 216                                        "data.formatted_content",
 217                                        new CachingRewindableIterator(brokenUpContent.iterator())
 218                                        );
 219
 220
 221     }
 222     catch (Throwable t) {
 223       aLogger.error("Error while formatting content for PDF: " + t.getMessage());
 224       t.printStackTrace(new PrintWriter(new LoggerToWriterAdapter(aLogger, LoggerWrapper.DEBUG_MESSAGE)));
 225     }
 226   }
 227 }
 228
 229
 230
 231