NextLine


1   /**
2    * Copyright (c) 2004, www.pdfbox.org
3    * All rights reserved.
4    *
5    * Redistribution and use in source and binary forms, with or without
6    * modification, are permitted provided that the following conditions are met:
7    *
8    * 1. Redistributions of source code must retain the above copyright notice,
9    *    this list of conditions and the following disclaimer.
10   * 2. Redistributions in binary form must reproduce the above copyright notice,
11   *    this list of conditions and the following disclaimer in the documentation
12   *    and/or other materials provided with the distribution.
13   * 3. Neither the name of pdfbox; nor the names of its
14   *    contributors may be used to endorse or promote products derived from this
15   *    software without specific prior written permission.
16   *
17   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20   * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
21   * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
24   * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27   *
28   * http://www.pdfbox.org
29   *
30   */
31  package org.pdfbox.util.operator;
32  
33  import java.io.IOException  ;
34  import java.util.ArrayList  ;
35  import java.util.List  ;
36  
37  import org.pdfbox.cos.COSFloat;
38  import org.pdfbox.util.PDFOperator;
39  
40  /**
41   *
42   * <p>Titre : PDFEngine Modification.</p>
43   * <p>Description : Structal modification of the PDFEngine class : the long sequence of 
44   *    conditions in processOperator is remplaced by this strategy pattern</p>
45   * <p>Copyright : Copyright (c) 2004</p>
46   * <p>Soci�t� : DBGS</p>
47   * @author Huault : huault@free.fr
48   * @version $Revision: 1.5 $
49   */
50  public class NextLine extends OperatorProcessor 
51  {
52      /**
53       * process : T* Move to start of next text line.
54       * @param operator The operator that is being executed.
55       * @param arguments List
56       *
57       * @throws IOException If there is an error during processing.
58       */
59      public void process(PDFOperator operator, List   arguments) throws IOException  
60      {
61          //move to start of next text line
62          ArrayList   args = new ArrayList  ();
63          args.add(new COSFloat(0.0f));
64          // this must be -leading instead of just leading as written in the 
65          // specification (p.369) the acrobat reader seems to implement it the same way
66          args.add(new COSFloat(-1*context.getGraphicsState().getTextState().getLeading()));
67          // use Td instead of repeating code
68          context.processOperator("Td", args);
69          
70      }
71  }
72
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