01: /**
02: * Copyright (c) 2004, www.pdfbox.org
03: * All rights reserved.
04: *
05: * Redistribution and use in source and binary forms, with or without
06: * modification, are permitted provided that the following conditions are met:
07: *
08: * 1. Redistributions of source code must retain the above copyright notice,
09: * 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: */package org.pdfbox.util.operator;
31:
32: import java.util.List;
33: import org.pdfbox.cos.COSNumber;
34: import org.pdfbox.util.PDFOperator;
35:
36: /**
37: *
38: * <p>Titre : PDFEngine Modification.</p>
39: * <p>Description : Structal modification of the PDFEngine class :
40: * the long sequence of conditions in processOperator is remplaced by
41: * this strategy pattern</p>
42: * <p>Copyright : Copyright (c) 2004</p>
43: * <p>Société : DBGS</p>
44: * @author Huault : huault@free.fr
45: * @version $Revision: 1.5 $
46: */
47: public class SetCharSpacing extends OperatorProcessor {
48: /**
49: * process : Tc Set character spacing.
50: * @param operator The operator that is being executed.
51: * @param arguments List
52: */
53: public void process(PDFOperator operator, List arguments) {
54: //set character spacing
55: if (arguments.size() > 0) {
56: //There are some documents which are incorrectly structured, and have
57: //a wrong number of arguments to this, so we will assume the last argument
58: //in the list
59: Object charSpacing = arguments.get(arguments.size() - 1);
60: if (charSpacing instanceof COSNumber) {
61: COSNumber characterSpacing = (COSNumber) charSpacing;
62: context.getGraphicsState().getTextState()
63: .setCharacterSpacing(
64: characterSpacing.floatValue());
65: }
66: }
67: }
68: }
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