01: /**
02: * Copyright (c) 2004-2006, 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.Matrix;
35: import org.pdfbox.util.PDFOperator;
36:
37: /**
38: *
39: * <p>Titre : PDFEngine Modification.</p>
40: * <p>Description : Structal modification of the PDFEngine class :
41: * the long sequence of conditions in processOperator is remplaced by
42: * this strategy pattern</p>
43: * <p>Copyright : Copyright (c) 2004</p>
44: * <p>Société : DBGS</p>
45: * @author Huault : huault@free.fr
46: * @version $Revision: 1.5 $
47: */
48:
49: public class Concatenate extends OperatorProcessor {
50:
51: /**
52: * process : cm : Concatenate matrix to current transformation matrix.
53: * @param operator The operator that is being executed.
54: * @param arguments List
55: */
56: public void process(PDFOperator operator, List arguments) {
57:
58: //concatenate matrix to current transformation matrix
59: COSNumber a = (COSNumber) arguments.get(0);
60: COSNumber b = (COSNumber) arguments.get(1);
61: COSNumber c = (COSNumber) arguments.get(2);
62: COSNumber d = (COSNumber) arguments.get(3);
63: COSNumber e = (COSNumber) arguments.get(4);
64: COSNumber f = (COSNumber) arguments.get(5);
65:
66: Matrix newMatrix = new Matrix();
67: newMatrix.setValue(0, 0, a.floatValue());
68: newMatrix.setValue(0, 1, b.floatValue());
69: newMatrix.setValue(1, 0, c.floatValue());
70: newMatrix.setValue(1, 1, d.floatValue());
71: newMatrix.setValue(2, 0, e.floatValue());
72: newMatrix.setValue(2, 1, f.floatValue());
73:
74: //this line has changed
75: context.getGraphicsState().setCurrentTransformationMatrix(
76: newMatrix.multiply(context.getGraphicsState()
77: .getCurrentTransformationMatrix()));
78:
79: }
80: }
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