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 java.util.Map;
34:
35: import org.pdfbox.cos.COSName;
36: import org.pdfbox.pdmodel.graphics.color.PDColorSpace;
37: import org.pdfbox.pdmodel.graphics.color.PDColorSpaceFactory;
38: import org.pdfbox.pdmodel.graphics.color.PDColorSpaceInstance;
39: import org.pdfbox.pdmodel.graphics.color.PDDeviceCMYK;
40: import org.pdfbox.util.PDFOperator;
41:
42: import java.io.IOException;
43:
44: /**
45: * <p>Structal modification of the PDFEngine class :
46: * the long sequence of conditions in processOperator is remplaced by
47: * this strategy pattern.</p>
48: *
49: * @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a>
50: * @version $Revision: 1.5 $
51: */
52:
53: public class SetStrokingColorSpace extends OperatorProcessor {
54: private static final float[] EMPTY_FLOAT_ARRAY = new float[0];
55:
56: /**
57: * CS Set color space for stroking operations.
58: * @param operator The operator that is being executed.
59: * @param arguments List
60: * @throws IOException If an error occurs while processing the font.
61: */
62: public void process(PDFOperator operator, List arguments)
63: throws IOException {
64: //(PDF 1.1) Set color space for stroking operations
65: COSName name = (COSName) arguments.get(0);
66: Map colorSpaces = context.getColorSpaces();
67: PDColorSpace cs = null;
68: if (colorSpaces != null) {
69: cs = (PDColorSpace) colorSpaces.get(name.getName());
70: }
71: if (cs == null) {
72: cs = PDColorSpaceFactory.createColorSpace(name);
73: }
74: PDColorSpaceInstance colorInstance = context.getGraphicsState()
75: .getStrokingColorSpace();
76: colorInstance.setColorSpace(cs);
77: int numComponents = cs.getNumberOfComponents();
78: float[] values = EMPTY_FLOAT_ARRAY;
79: if (numComponents >= 0) {
80: values = new float[numComponents];
81: for (int i = 0; i < numComponents; i++) {
82: values[i] = 0f;
83: }
84: if (cs instanceof PDDeviceCMYK) {
85: values[3] = 1f;
86: }
87: }
88: colorInstance.setColorSpaceValue(values);
89: }
90: }
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