/*
    * @(#)$Id: PDFTool.java 736 2009-08-14 09:20:17Z kurmannu $
    *
    * Author       :   Ueli Kurmann, igesture@uelikurmann.ch
    *
    * Purpose      :   PDF tools.
    *
    * -----------------------------------------------------------------------
    *
   * Revision Information:
   *
   * Date             Who         Reason
   *
   * Dec 26, 2006     ukurmann    Initial Release
   * Mar 24, 2007     bsigner     Cleanup
   *
   * -----------------------------------------------------------------------
   *
   * Copyright 1999-2009 ETH Zurich. All Rights Reserved.
   *
   * This software is the proprietary information of ETH Zurich.
   * Use is subject to license terms.
   * 
   */
  
  
  package hacks;
  
  import java.awt.Color;
  import java.awt.image.BufferedImage;
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.util.logging.Level;
  import java.util.logging.Logger;
  
  import org.sigtec.ink.Note;
  import org.sigtec.util.Constant;
  import org.ximtec.igesture.core.GestureClass;
  import org.ximtec.igesture.core.GestureSet;
  import org.ximtec.igesture.core.SampleDescriptor;
  
  import com.lowagie.text.BadElementException;
  import com.lowagie.text.Document;
  import com.lowagie.text.DocumentException;
  import com.lowagie.text.Element;
  import com.lowagie.text.Font;
  import com.lowagie.text.FontFactory;
  import com.lowagie.text.Image;
  import com.lowagie.text.Paragraph;
  import com.lowagie.text.pdf.PdfPCell;
  import com.lowagie.text.pdf.PdfPTable;
  import com.lowagie.text.pdf.PdfWriter;
  
  
  /**
   * PDF tools.
   * 
   * @version 1.0 Dec 2006
   * @author Ueli Kurmann, igesture@uelikurmann.ch
   * @author Beat Signer, signer@inf.ethz.ch
   */
  public class PDFTool {
  
     private static final Logger LOGGER = Logger
           .getLogger(PDFTool.class.getName());
  
     public static int NUMBER_OF_COLUMNS = 3;
  
  
     /**
      * Creates a new PDF document.
      * 
      * @param file the file of the new PDF document.
      * @return the pdf document.
      */
     public static Document createDocument(File file) {
        final Document document = new Document();
  
        try {
           PdfWriter.getInstance(document, new FileOutputStream(file));
        }
        catch (final FileNotFoundException e) {
           LOGGER.log(Level.SEVERE, Constant.EMPTY_STRING, e);
        }
        catch (final DocumentException e) {
           LOGGER.log(Level.SEVERE, Constant.EMPTY_STRING, e);
        }
  
        return document;
     } // createDocument
  
  
     /**
      * Creates a table filled with a sample gesture and the corresponding name.
      * 
      * @param set the gesture set.
      * @param columns the number of columns in the table.
     * @return the PDF table.
     */
    public static PdfPTable createGestureSetTable(GestureSet set, int columns) {
       final PdfPTable table = createTable(columns);
 
       for (final GestureClass gestureClass : set.getGestureClasses()) {
          table.addCell(createImageCell(gestureClass));
       }
 
       for (int i = 0; i <= set.size() % 3; i++) {
          table.addCell(Constant.EMPTY_STRING);
       }
 
       return table;
    } // createGestureSetTable
 
 
    public static PdfPTable createTable(int columns) {
       return new PdfPTable(columns);
    } // createTables
 
 
    /**
     * @see createGestureSetTable
     * @param set the gesture set.
     * @return the PDF table.
     */
    public static PdfPTable createGestureSetTable(GestureSet set) {
       return createGestureSetTable(set, NUMBER_OF_COLUMNS);
    } // createGestureSetTable
 
 
    /**
     * Creates a table cell with a gesture sample and the name.
     * 
     * @param gestureClass the gesture class.
     * @return the table cell.
     */
    public static PdfPCell createImageCell(GestureClass gestureClass) {
       final PdfPCell cell = new PdfPCell();
 
       try {
          final Image img = Image
                .getInstance(getImage(gestureClass), Color.black);
          cell.addElement(img);
          cell.setBackgroundColor(new Color(0xFF, 0xFF, 0xFF));
          cell.setHorizontalAlignment(Element.ALIGN_CENTER);
          cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
          cell.addElement(createTitle(gestureClass.getName()));
       }
       catch (final BadElementException e) {
          LOGGER.log(Level.SEVERE, Constant.EMPTY_STRING, e);
       }
       catch (final IOException e) {
          LOGGER.log(Level.SEVERE, Constant.EMPTY_STRING, e);
       }
 
       return cell;
    } // createImageCell
 
 
    /**
     * Creates an empty table cell.
     * 
     * @return the empty table cell.
     */
    public static PdfPCell createEmptyCell() {
       final PdfPCell cell = new PdfPCell();
       return cell;
    } // createEmptyCell
 
 
    /**
     * Creates a buffered image of the gesture class.
     * 
     * @param gestureClass the gesture class.
     * @return the buffered image of the gesture class.
     */
    private static BufferedImage getImage(GestureClass gestureClass) {
       final JNote jnote = new JNote(200, 200);
       try{
       jnote.setNote(gestureClass.getDescriptor(SampleDescriptor.class)
             .getSamples().get(0).getGesture());
       }catch(Exception e){
         e.printStackTrace();
       }
       
       return jnote.getImage();
    } // getImage
 
 
    /**
     * Creates the title of the gesture class.
     * 
     * @param text the title.
     * @return the title of the gesture class
     */
    private static Element createTitle(String text) {
       final Font font = FontFactory.getFont("Helvetica", 10, Font.BOLDITALIC,
             Color.BLACK);
       final Paragraph p = new Paragraph(text, font);
       p.setAlignment(Element.ALIGN_CENTER);
       p.setLeading(font.size() * 1.2f);
       return p;
    } // createTitle
 
 }