/*
* $Id: PdfXConformanceImp.java 3117 2008-01-31 05:53:22Z xlv $
*
* Copyright 2006 Bruno Lowagie (based on code by Paulo Soares)
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
package com.lowagie.text.pdf.internal;
import java.awt.Color;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.ExtendedColor;
import com.lowagie.text.pdf.PatternColor;
import com.lowagie.text.pdf.PdfArray;
import com.lowagie.text.pdf.PdfDictionary;
import com.lowagie.text.pdf.PdfGState;
import com.lowagie.text.pdf.PdfImage;
import com.lowagie.text.pdf.PdfName;
import com.lowagie.text.pdf.PdfNumber;
import com.lowagie.text.pdf.PdfObject;
import com.lowagie.text.pdf.PdfString;
import com.lowagie.text.pdf.PdfWriter;
import com.lowagie.text.pdf.PdfXConformanceException;
import com.lowagie.text.pdf.ShadingColor;
import com.lowagie.text.pdf.SpotColor;
import com.lowagie.text.pdf.interfaces.PdfXConformance;
public class PdfXConformanceImp implements PdfXConformance {
/** A key for an aspect that can be checked for PDF/X Conformance. */
public static final int PDFXKEY_COLOR = 1;
/** A key for an aspect that can be checked for PDF/X Conformance. */
public static final int PDFXKEY_CMYK = 2;
/** A key for an aspect that can be checked for PDF/X Conformance. */
public static final int PDFXKEY_RGB = 3;
/** A key for an aspect that can be checked for PDF/X Conformance. */
public static final int PDFXKEY_FONT = 4;
/** A key for an aspect that can be checked for PDF/X Conformance. */
public static final int PDFXKEY_IMAGE = 5;
/** A key for an aspect that can be checked for PDF/X Conformance. */
public static final int PDFXKEY_GSTATE = 6;
/** A key for an aspect that can be checked for PDF/X Conformance. */
public static final int PDFXKEY_LAYER = 7;
/**
* The value indicating if the PDF has to be in conformance with PDF/X.
*/
protected int pdfxConformance = PdfWriter.PDFXNONE;
/**
* @see com.lowagie.text.pdf.interfaces.PdfXConformance#setPDFXConformance(int)
*/
public void setPDFXConformance(int pdfxConformance) {
this.pdfxConformance = pdfxConformance;
}
/**
* @see com.lowagie.text.pdf.interfaces.PdfXConformance#getPDFXConformance()
*/
public int getPDFXConformance() {
return pdfxConformance;
}
/**
* Checks if the PDF/X Conformance is necessary.
* @return true if the PDF has to be in conformance with any of the PDF/X specifications
*/
public boolean isPdfX() {
return pdfxConformance != PdfWriter.PDFXNONE;
}
/**
* Checks if the PDF has to be in conformance with PDF/X-1a:2001
* @return true of the PDF has to be in conformance with PDF/X-1a:2001
*/
public boolean isPdfX1A2001() {
return pdfxConformance == PdfWriter.PDFX1A2001;
}
/**
* Checks if the PDF has to be in conformance with PDF/X-3:2002
* @return true of the PDF has to be in conformance with PDF/X-3:2002
*/
public boolean isPdfX32002() {
return pdfxConformance == PdfWriter.PDFX32002;
}
/**
* Checks if the PDF has to be in conformance with PDFA1
* @return true of the PDF has to be in conformance with PDFA1
*/
public boolean isPdfA1() {
return pdfxConformance == PdfWriter.PDFA1A || pdfxConformance == PdfWriter.PDFA1B;
}
/**
* Checks if the PDF has to be in conformance with PDFA1A
* @return true of the PDF has to be in conformance with PDFA1A
*/
public boolean isPdfA1A() {
return pdfxConformance == PdfWriter.PDFA1A;
}
public void completeInfoDictionary(PdfDictionary info) {
if (isPdfX() && !isPdfA1()) {
if (info.get(PdfName.GTS_PDFXVERSION) == null) {
if (isPdfX1A2001()) {
info.put(PdfName.GTS_PDFXVERSION, new PdfString("PDF/X-1:2001"));
info.put(new PdfName("GTS_PDFXConformance"), new PdfString("PDF/X-1a:2001"));
}
else if (isPdfX32002())
info.put(PdfName.GTS_PDFXVERSION, new PdfString("PDF/X-3:2002"));
}
if (info.get(PdfName.TITLE) == null) {
info.put(PdfName.TITLE, new PdfString("Pdf document"));
}
if (info.get(PdfName.CREATOR) == null) {
info.put(PdfName.CREATOR, new PdfString("Unknown"));
}
if (info.get(PdfName.TRAPPED) == null) {
info.put(PdfName.TRAPPED, new PdfName("False"));
}
}
}
public void completeExtraCatalog(PdfDictionary extraCatalog) {
if (isPdfX() && !isPdfA1()) {
if (extraCatalog.get(PdfName.OUTPUTINTENTS) == null) {
PdfDictionary out = new PdfDictionary(PdfName.OUTPUTINTENT);
out.put(PdfName.OUTPUTCONDITION, new PdfString("SWOP CGATS TR 001-1995"));
out.put(PdfName.OUTPUTCONDITIONIDENTIFIER, new PdfString("CGATS TR 001"));
out.put(PdfName.REGISTRYNAME, new PdfString("http://www.color.org"));
out.put(PdfName.INFO, new PdfString(""));
out.put(PdfName.S, PdfName.GTS_PDFX);
extraCatalog.put(PdfName.OUTPUTINTENTS, new PdfArray(out));
}
}
}
/**
* Business logic that checks if a certain object is in conformance with PDF/X.
* @param writer the writer that is supposed to write the PDF/X file
* @param key the type of PDF/X conformance that has to be checked
* @param obj1 the object that is checked for conformance
*/
public static void checkPDFXConformance(PdfWriter writer, int key, Object obj1) {
if (writer == null || !writer.isPdfX())
return;
int conf = writer.getPDFXConformance();
switch (key) {
case PDFXKEY_COLOR:
switch (conf) {
case PdfWriter.PDFX1A2001:
if (obj1 instanceof ExtendedColor) {
ExtendedColor ec = (ExtendedColor)obj1;
switch (ec.getType()) {
case ExtendedColor.TYPE_CMYK:
case ExtendedColor.TYPE_GRAY:
return;
case ExtendedColor.TYPE_RGB:
throw new PdfXConformanceException("Colorspace RGB is not allowed.");
case ExtendedColor.TYPE_SEPARATION:
SpotColor sc = (SpotColor)ec;
checkPDFXConformance(writer, PDFXKEY_COLOR, sc.getPdfSpotColor().getAlternativeCS());
break;
case ExtendedColor.TYPE_SHADING:
ShadingColor xc = (ShadingColor)ec;
checkPDFXConformance(writer, PDFXKEY_COLOR, xc.getPdfShadingPattern().getShading().getColorSpace());
break;
case ExtendedColor.TYPE_PATTERN:
PatternColor pc = (PatternColor)ec;
checkPDFXConformance(writer, PDFXKEY_COLOR, pc.getPainter().getDefaultColor());
break;
}
}
else if (obj1 instanceof Color)
throw new PdfXConformanceException("Colorspace RGB is not allowed.");
break;
}
break;
case PDFXKEY_CMYK:
break;
case PDFXKEY_RGB:
if (conf == PdfWriter.PDFX1A2001)
throw new PdfXConformanceException("Colorspace RGB is not allowed.");
break;
case PDFXKEY_FONT:
if (!((BaseFont)obj1).isEmbedded())
throw new PdfXConformanceException("All the fonts must be embedded.");
break;
case PDFXKEY_IMAGE:
PdfImage image = (PdfImage)obj1;
if (image.get(PdfName.SMASK) != null)
throw new PdfXConformanceException("The /SMask key is not allowed in images.");
switch (conf) {
case PdfWriter.PDFX1A2001:
PdfObject cs = image.get(PdfName.COLORSPACE);
if (cs == null)
return;
if (cs.isName()) {
if (PdfName.DEVICERGB.equals(cs))
throw new PdfXConformanceException("Colorspace RGB is not allowed.");
}
else if (cs.isArray()) {
if (PdfName.CALRGB.equals(((PdfArray)cs).getArrayList().get(0)))
throw new PdfXConformanceException("Colorspace CalRGB is not allowed.");
}
break;
}
break;
case PDFXKEY_GSTATE:
PdfDictionary gs = (PdfDictionary)obj1;
PdfObject obj = gs.get(PdfName.BM);
if (obj != null && !PdfGState.BM_NORMAL.equals(obj) && !PdfGState.BM_COMPATIBLE.equals(obj))
throw new PdfXConformanceException("Blend mode " + obj.toString() + " not allowed.");
obj = gs.get(PdfName.CA);
double v = 0.0;
if (obj != null && (v = ((PdfNumber)obj).doubleValue()) != 1.0)
throw new PdfXConformanceException("Transparency is not allowed: /CA = " + v);
obj = gs.get(PdfName.ca);
v = 0.0;
if (obj != null && (v = ((PdfNumber)obj).doubleValue()) != 1.0)
throw new PdfXConformanceException("Transparency is not allowed: /ca = " + v);
break;
case PDFXKEY_LAYER:
throw new PdfXConformanceException("Layers are not allowed.");
}
}
}