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:
34: import org.pdfbox.util.Matrix;
35: import org.pdfbox.util.PDFOperator;
36: import org.pdfbox.cos.COSArray;
37: import org.pdfbox.cos.COSBase;
38: import org.pdfbox.cos.COSNumber;
39: import java.io.IOException;
40: import org.pdfbox.cos.COSString;
41:
42: /**
43: * <p>Titre : PDFEngine Modification.</p>
44: * <p>Description : Structal modification of the PDFEngine class : the long sequence of
45: * conditions in processOperator is remplaced by this strategy pattern</p>
46: * <p>Copyright : Copyright (c) 2004</p>
47: * <p>Société : DBGS</p>
48: * @author Huault : huault@free.fr
49: * @version $Revision: 1.6 $
50: */
51:
52: public class ShowTextGlyph extends OperatorProcessor {
53: /**
54: * TJ Show text, allowing individual glyph positioning.
55: * @param operator The operator that is being executed.
56: * @param arguments List
57: * @throws IOException If there is an error processing this operator.
58: */
59: public void process(PDFOperator operator, List arguments)
60: throws IOException {
61: COSArray array = (COSArray) arguments.get(0);
62: float adjustment = 0;
63: for (int i = 0; i < array.size(); i++) {
64: COSBase next = array.get(i);
65: if (next instanceof COSNumber) {
66: adjustment = ((COSNumber) next).floatValue();
67:
68: Matrix adjMatrix = new Matrix();
69: adjustment = (-adjustment / 1000)
70: * context.getGraphicsState().getTextState()
71: .getFontSize()
72: * (context.getGraphicsState().getTextState()
73: .getHorizontalScalingPercent() / 100);
74: adjMatrix.setValue(2, 0, adjustment);
75: context.setTextMatrix(adjMatrix.multiply(context
76: .getTextMatrix()));
77: } else if (next instanceof COSString) {
78: context.showString(((COSString) next).getBytes());
79: } else {
80: throw new IOException(
81: "Unknown type in array for TJ operation:"
82: + next);
83: }
84: }
85: }
86:
87: }
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