1 /*
2 * $Id: PdfXConformanceImp.java 3829 2009-04-01 15:50:47Z blowagie $
3 *
4 * Copyright 2006 Bruno Lowagie (based on code by Paulo Soares)
5 *
6 * The contents of this file are subject to the Mozilla Public License Version 1.1
7 * (the "License"); you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
9 *
10 * Software distributed under the License is distributed on an "AS IS" basis,
11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 * for the specific language governing rights and limitations under the License.
13 *
14 * The Original Code is 'iText, a free JAVA-PDF library'.
15 *
16 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
17 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
18 * All Rights Reserved.
19 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
20 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
21 *
22 * Contributor(s): all the names of the contributors are added in the source code
23 * where applicable.
24 *
25 * Alternatively, the contents of this file may be used under the terms of the
26 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
27 * provisions of LGPL are applicable instead of those above. If you wish to
28 * allow use of your version of this file only under the terms of the LGPL
29 * License and not to allow others to use your version of this file under
30 * the MPL, indicate your decision by deleting the provisions above and
31 * replace them with the notice and other provisions required by the LGPL.
32 * If you do not delete the provisions above, a recipient may use your version
33 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
34 *
35 * This library is free software; you can redistribute it and/or modify it
36 * under the terms of the MPL as stated above or under the terms of the GNU
37 * Library General Public License as published by the Free Software Foundation;
38 * either version 2 of the License, or any later version.
39 *
40 * This library is distributed in the hope that it will be useful, but WITHOUT
41 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
42 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
43 * details.
44 *
45 * If you didn't download this code from the following link, you should check if
46 * you aren't using an obsolete version:
47 * http://www.lowagie.com/iText/
48 */
49
50 package com.lowagie.text.pdf.internal;
51
52 import java.awt.Color;
53
54 import com.lowagie.text.pdf.BaseFont;
55 import com.lowagie.text.pdf.ExtendedColor;
56 import com.lowagie.text.pdf.PatternColor;
57 import com.lowagie.text.pdf.PdfArray;
58 import com.lowagie.text.pdf.PdfDictionary;
59 import com.lowagie.text.pdf.PdfGState;
60 import com.lowagie.text.pdf.PdfImage;
61 import com.lowagie.text.pdf.PdfName;
62 import com.lowagie.text.pdf.PdfNumber;
63 import com.lowagie.text.pdf.PdfObject;
64 import com.lowagie.text.pdf.PdfString;
65 import com.lowagie.text.pdf.PdfWriter;
66 import com.lowagie.text.pdf.PdfXConformanceException;
67 import com.lowagie.text.pdf.ShadingColor;
68 import com.lowagie.text.pdf.SpotColor;
69 import com.lowagie.text.pdf.interfaces.PdfXConformance;
70
71 public class PdfXConformanceImp implements PdfXConformance {
72
73 /** A key for an aspect that can be checked for PDF/X Conformance. */
74 public static final int PDFXKEY_COLOR = 1;
75 /** A key for an aspect that can be checked for PDF/X Conformance. */
76 public static final int PDFXKEY_CMYK = 2;
77 /** A key for an aspect that can be checked for PDF/X Conformance. */
78 public static final int PDFXKEY_RGB = 3;
79 /** A key for an aspect that can be checked for PDF/X Conformance. */
80 public static final int PDFXKEY_FONT = 4;
81 /** A key for an aspect that can be checked for PDF/X Conformance. */
82 public static final int PDFXKEY_IMAGE = 5;
83 /** A key for an aspect that can be checked for PDF/X Conformance. */
84 public static final int PDFXKEY_GSTATE = 6;
85 /** A key for an aspect that can be checked for PDF/X Conformance. */
86 public static final int PDFXKEY_LAYER = 7;
87
88 /**
89 * The value indicating if the PDF has to be in conformance with PDF/X.
90 */
91 protected int pdfxConformance = PdfWriter.PDFXNONE;
92
93 /**
94 * @see com.lowagie.text.pdf.interfaces.PdfXConformance#setPDFXConformance(int)
95 */
96 public void setPDFXConformance(int pdfxConformance) {
97 this.pdfxConformance = pdfxConformance;
98 }
99
100 /**
101 * @see com.lowagie.text.pdf.interfaces.PdfXConformance#getPDFXConformance()
102 */
103 public int getPDFXConformance() {
104 return pdfxConformance;
105 }
106
107 /**
108 * Checks if the PDF/X Conformance is necessary.
109 * @return true if the PDF has to be in conformance with any of the PDF/X specifications
110 */
111 public boolean isPdfX() {
112 return pdfxConformance != PdfWriter.PDFXNONE;
113 }
114 /**
115 * Checks if the PDF has to be in conformance with PDF/X-1a:2001
116 * @return true of the PDF has to be in conformance with PDF/X-1a:2001
117 */
118 public boolean isPdfX1A2001() {
119 return pdfxConformance == PdfWriter.PDFX1A2001;
120 }
121 /**
122 * Checks if the PDF has to be in conformance with PDF/X-3:2002
123 * @return true of the PDF has to be in conformance with PDF/X-3:2002
124 */
125 public boolean isPdfX32002() {
126 return pdfxConformance == PdfWriter.PDFX32002;
127 }
128
129 /**
130 * Checks if the PDF has to be in conformance with PDFA1
131 * @return true of the PDF has to be in conformance with PDFA1
132 */
133 public boolean isPdfA1() {
134 return pdfxConformance == PdfWriter.PDFA1A || pdfxConformance == PdfWriter.PDFA1B;
135 }
136
137 /**
138 * Checks if the PDF has to be in conformance with PDFA1A
139 * @return true of the PDF has to be in conformance with PDFA1A
140 */
141 public boolean isPdfA1A() {
142 return pdfxConformance == PdfWriter.PDFA1A;
143 }
144
145 public void completeInfoDictionary(PdfDictionary info) {
146 if (isPdfX() && !isPdfA1()) {
147 if (info.get(PdfName.GTS_PDFXVERSION) == null) {
148 if (isPdfX1A2001()) {
149 info.put(PdfName.GTS_PDFXVERSION, new PdfString("PDF/X-1:2001"));
150 info.put(new PdfName("GTS_PDFXConformance"), new PdfString("PDF/X-1a:2001"));
151 }
152 else if (isPdfX32002())
153 info.put(PdfName.GTS_PDFXVERSION, new PdfString("PDF/X-3:2002"));
154 }
155 if (info.get(PdfName.TITLE) == null) {
156 info.put(PdfName.TITLE, new PdfString("Pdf document"));
157 }
158 if (info.get(PdfName.CREATOR) == null) {
159 info.put(PdfName.CREATOR, new PdfString("Unknown"));
160 }
161 if (info.get(PdfName.TRAPPED) == null) {
162 info.put(PdfName.TRAPPED, new PdfName("False"));
163 }
164 }
165 }
166
167 public void completeExtraCatalog(PdfDictionary extraCatalog) {
168 if (isPdfX() && !isPdfA1()) {
169 if (extraCatalog.get(PdfName.OUTPUTINTENTS) == null) {
170 PdfDictionary out = new PdfDictionary(PdfName.OUTPUTINTENT);
171 out.put(PdfName.OUTPUTCONDITION, new PdfString("SWOP CGATS TR 001-1995"));
172 out.put(PdfName.OUTPUTCONDITIONIDENTIFIER, new PdfString("CGATS TR 001"));
173 out.put(PdfName.REGISTRYNAME, new PdfString("http://www.color.org"));
174 out.put(PdfName.INFO, new PdfString(""));
175 out.put(PdfName.S, PdfName.GTS_PDFX);
176 extraCatalog.put(PdfName.OUTPUTINTENTS, new PdfArray(out));
177 }
178 }
179 }
180
181 /**
182 * Business logic that checks if a certain object is in conformance with PDF/X.
183 * @param writer the writer that is supposed to write the PDF/X file
184 * @param key the type of PDF/X conformance that has to be checked
185 * @param obj1 the object that is checked for conformance
186 */
187 public static void checkPDFXConformance(PdfWriter writer, int key, Object obj1) {
188 if (writer == null || !writer.isPdfX())
189 return;
190 int conf = writer.getPDFXConformance();
191 switch (key) {
192 case PDFXKEY_COLOR:
193 switch (conf) {
194 case PdfWriter.PDFX1A2001:
195 if (obj1 instanceof ExtendedColor) {
196 ExtendedColor ec = (ExtendedColor)obj1;
197 switch (ec.getType()) {
198 case ExtendedColor.TYPE_CMYK:
199 case ExtendedColor.TYPE_GRAY:
200 return;
201 case ExtendedColor.TYPE_RGB:
202 throw new PdfXConformanceException("Colorspace RGB is not allowed.");
203 case ExtendedColor.TYPE_SEPARATION:
204 SpotColor sc = (SpotColor)ec;
205 checkPDFXConformance(writer, PDFXKEY_COLOR, sc.getPdfSpotColor().getAlternativeCS());
206 break;
207 case ExtendedColor.TYPE_SHADING:
208 ShadingColor xc = (ShadingColor)ec;
209 checkPDFXConformance(writer, PDFXKEY_COLOR, xc.getPdfShadingPattern().getShading().getColorSpace());
210 break;
211 case ExtendedColor.TYPE_PATTERN:
212 PatternColor pc = (PatternColor)ec;
213 checkPDFXConformance(writer, PDFXKEY_COLOR, pc.getPainter().getDefaultColor());
214 break;
215 }
216 }
217 else if (obj1 instanceof Color)
218 throw new PdfXConformanceException("Colorspace RGB is not allowed.");
219 break;
220 }
221 break;
222 case PDFXKEY_CMYK:
223 break;
224 case PDFXKEY_RGB:
225 if (conf == PdfWriter.PDFX1A2001)
226 throw new PdfXConformanceException("Colorspace RGB is not allowed.");
227 break;
228 case PDFXKEY_FONT:
229 if (!((BaseFont)obj1).isEmbedded())
230 throw new PdfXConformanceException("All the fonts must be embedded. This one isn't: " + ((BaseFont)obj1).getPostscriptFontName());
231 break;
232 case PDFXKEY_IMAGE:
233 PdfImage image = (PdfImage)obj1;
234 if (image.get(PdfName.SMASK) != null)
235 throw new PdfXConformanceException("The /SMask key is not allowed in images.");
236 switch (conf) {
237 case PdfWriter.PDFX1A2001:
238 PdfObject cs = image.get(PdfName.COLORSPACE);
239 if (cs == null)
240 return;
241 if (cs.isName()) {
242 if (PdfName.DEVICERGB.equals(cs))
243 throw new PdfXConformanceException("Colorspace RGB is not allowed.");
244 }
245 else if (cs.isArray()) {
246 if (PdfName.CALRGB.equals(((PdfArray)cs).getPdfObject(0)))
247 throw new PdfXConformanceException("Colorspace CalRGB is not allowed.");
248 }
249 break;
250 }
251 break;
252 case PDFXKEY_GSTATE:
253 PdfDictionary gs = (PdfDictionary)obj1;
254 PdfObject obj = gs.get(PdfName.BM);
255 if (obj != null && !PdfGState.BM_NORMAL.equals(obj) && !PdfGState.BM_COMPATIBLE.equals(obj))
256 throw new PdfXConformanceException("Blend mode " + obj.toString() + " not allowed.");
257 obj = gs.get(PdfName.CA);
258 double v = 0.0;
259 if (obj != null && (v = ((PdfNumber)obj).doubleValue()) != 1.0)
260 throw new PdfXConformanceException("Transparency is not allowed: /CA = " + v);
261 obj = gs.get(PdfName.ca);
262 v = 0.0;
263 if (obj != null && (v = ((PdfNumber)obj).doubleValue()) != 1.0)
264 throw new PdfXConformanceException("Transparency is not allowed: /ca = " + v);
265 break;
266 case PDFXKEY_LAYER:
267 throw new PdfXConformanceException("Layers are not allowed.");
268 }
269 }
270 }
271