/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2017 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: sales@itextpdf.com
*/
package com.itextpdf.text.pdf.internal;
import com.itextpdf.text.BaseColor;
import com.itextpdf.text.error_messages.MessageLocalization;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.ExtendedColor;
import com.itextpdf.text.pdf.PatternColor;
import com.itextpdf.text.pdf.PdfArray;
import com.itextpdf.text.pdf.PdfDictionary;
import com.itextpdf.text.pdf.PdfGState;
import com.itextpdf.text.pdf.PdfImage;
import com.itextpdf.text.pdf.PdfName;
import com.itextpdf.text.pdf.PdfNumber;
import com.itextpdf.text.pdf.PdfObject;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.text.pdf.PdfXConformanceException;
import com.itextpdf.text.pdf.ShadingColor;
import com.itextpdf.text.pdf.SpotColor;
import com.itextpdf.text.pdf.interfaces.PdfXConformance;
public class PdfXConformanceImp implements PdfXConformance {
/**
* The value indicating if the PDF has to be in conformance with PDF/X.
*/
protected int pdfxConformance = PdfWriter.PDFXNONE;
protected PdfWriter writer;
public PdfXConformanceImp(PdfWriter writer) {
this.writer = writer;
}
/**
* @see com.itextpdf.text.pdf.interfaces.PdfXConformance#setPDFXConformance(int)
*/
public void setPDFXConformance(int pdfxConformance) {
this.pdfxConformance = pdfxConformance;
}
/**
* @see com.itextpdf.text.pdf.interfaces.PdfXConformance#getPDFXConformance()
*/
public int getPDFXConformance() {
return pdfxConformance;
}
/**
* @see com.itextpdf.text.pdf.interfaces.PdfIsoConformance#isPdfIso()
*/
public boolean isPdfIso() {
return isPdfX();
}
/**
* 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;
}
/**
* Business logic that checks if a certain object is in conformance with PDF/X.
* @param key the type of PDF ISO conformance that has to be checked
* @param obj1 the object that is checked for conformance
*/
public void checkPdfIsoConformance(int key, Object obj1) {
if (writer == null || !writer.isPdfX())
return;
int conf = writer.getPDFXConformance();
switch (key) {
case PdfIsoKeys.PDFISOKEY_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(MessageLocalization.getComposedMessage("colorspace.rgb.is.not.allowed"));
case ExtendedColor.TYPE_SEPARATION:
SpotColor sc = (SpotColor)ec;
checkPdfIsoConformance(PdfIsoKeys.PDFISOKEY_COLOR, sc.getPdfSpotColor().getAlternativeCS());
break;
case ExtendedColor.TYPE_SHADING:
ShadingColor xc = (ShadingColor)ec;
checkPdfIsoConformance(PdfIsoKeys.PDFISOKEY_COLOR, xc.getPdfShadingPattern().getShading().getColorSpace());
break;
case ExtendedColor.TYPE_PATTERN:
PatternColor pc = (PatternColor)ec;
checkPdfIsoConformance(PdfIsoKeys.PDFISOKEY_COLOR, pc.getPainter().getDefaultColor());
break;
}
}
else if (obj1 instanceof BaseColor)
throw new PdfXConformanceException(MessageLocalization.getComposedMessage("colorspace.rgb.is.not.allowed"));
break;
}
break;
case PdfIsoKeys.PDFISOKEY_CMYK:
break;
case PdfIsoKeys.PDFISOKEY_RGB:
if (conf == PdfWriter.PDFX1A2001)
throw new PdfXConformanceException(MessageLocalization.getComposedMessage("colorspace.rgb.is.not.allowed"));
break;
case PdfIsoKeys.PDFISOKEY_FONT:
if (!((BaseFont)obj1).isEmbedded())
throw new PdfXConformanceException(MessageLocalization.getComposedMessage("all.the.fonts.must.be.embedded.this.one.isn.t.1", ((BaseFont)obj1).getPostscriptFontName()));
break;
case PdfIsoKeys.PDFISOKEY_IMAGE:
PdfImage image = (PdfImage)obj1;
if (image.get(PdfName.SMASK) != null)
throw new PdfXConformanceException(MessageLocalization.getComposedMessage("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(MessageLocalization.getComposedMessage("colorspace.rgb.is.not.allowed"));
}
else if (cs.isArray()) {
if (PdfName.CALRGB.equals(((PdfArray)cs).getPdfObject(0)))
throw new PdfXConformanceException(MessageLocalization.getComposedMessage("colorspace.calrgb.is.not.allowed"));
}
break;
}
break;
case PdfIsoKeys.PDFISOKEY_GSTATE:
PdfDictionary gs = (PdfDictionary)obj1;
// The example PdfXPdfA threw a NullPointerException because gs was null
if (gs == null)
break;
PdfObject obj = gs.get(PdfName.BM);
if (obj != null && !PdfGState.BM_NORMAL.equals(obj) && !PdfGState.BM_COMPATIBLE.equals(obj))
throw new PdfXConformanceException(MessageLocalization.getComposedMessage("blend.mode.1.not.allowed", obj.toString()));
obj = gs.get(PdfName.CA);
double v = 0.0;
if (obj != null && (v = ((PdfNumber)obj).doubleValue()) != 1.0)
throw new PdfXConformanceException(MessageLocalization.getComposedMessage("transparency.is.not.allowed.ca.eq.1", String.valueOf(v)));
obj = gs.get(PdfName.ca);
v = 0.0;
if (obj != null && (v = ((PdfNumber)obj).doubleValue()) != 1.0)
throw new PdfXConformanceException(MessageLocalization.getComposedMessage("transparency.is.not.allowed.ca.eq.1", String.valueOf(v)));
break;
case PdfIsoKeys.PDFISOKEY_LAYER:
throw new PdfXConformanceException(MessageLocalization.getComposedMessage("layers.are.not.allowed"));
}
}
}