PDFDocument.java

//
// Android PDF Writer
// http://coderesearchlabs.com/androidpdfwriter
//
// by Javier Santo Domingo (j-a-s-d@coderesearchlabs.com)
//

package totalcross.util.pdf;

public class PDFDocument extends Base
{
   private Header mHeader;
   private Body mBody;
   private CrossReferenceTable mCRT;
   private Trailer mTrailer;

   public PDFDocument()
   {
      mHeader = new Header();
      mBody = new Body();
      mBody.setByteOffsetStart(mHeader.getPDFStringSize());
      mBody.setObjectNumberStart(0);
      mCRT = new CrossReferenceTable();
      mTrailer = new Trailer();
   }

   public IndirectObject newIndirectObject()
   {
      return mBody.getNewIndirectObject();
   }

   public IndirectObject newRawObject(String content)
   {
      IndirectObject iobj = mBody.getNewIndirectObject();
      iobj.setContent(content);
      return iobj;
   }

   public IndirectObject newDictionaryObject(String dictionaryContent)
   {
      IndirectObject iobj = mBody.getNewIndirectObject();
      iobj.setDictionaryContent(dictionaryContent);
      return iobj;
   }

   public IndirectObject newStreamObject(String streamContent)
   {
      IndirectObject iobj = mBody.getNewIndirectObject();
      iobj.setDictionaryContent("  /Length " + Integer.toString(streamContent.length()) + "\n");
      iobj.setStreamContent(streamContent);
      return iobj;
   }

   public void includeIndirectObject(IndirectObject iobj)
   {
      mBody.includeIndirectObject(iobj);
   }

   public String toPDFString()
   {
      StringBuilder sb = new StringBuilder();
      sb.append(mHeader.toPDFString());
      sb.append(mBody.toPDFString());
      mCRT.setObjectNumberStart(mBody.getObjectNumberStart());
      int x = 0;
      while (x < mBody.getObjectsCount())
      {
         IndirectObject iobj = mBody.getObjectByNumberID(++x);
         if (iobj != null)
         {
            mCRT.addObjectXRefInfo(iobj.getByteOffset(), iobj.getGeneration(), iobj.getInUse());
         }
      }
      mTrailer.setObjectsCount(mBody.getObjectsCount());
      mTrailer.setCrossReferenceTableByteOffset(sb.length());
      mTrailer.setId(Indentifiers.generateId());
      return sb.toString() + mCRT.toPDFString() + mTrailer.toPDFString();
   }

   public void clear()
   {
      mHeader.clear();
      mBody.clear();
      mCRT.clear();
      mTrailer.clear();
   }
}