
com.itextpdf.kernel.mac.MacPdfObject Maven / Gradle / Ivy
/*
This file is part of the iText (R) project.
Copyright (c) 1998-2024 Apryse Group NV
Authors: Apryse Software.
This program is offered under a commercial and under the AGPL license.
For commercial licensing, contact us at https://itextpdf.com/sales. For AGPL licensing, see below.
AGPL licensing:
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
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 .
*/
package com.itextpdf.kernel.mac;
import com.itextpdf.kernel.pdf.PdfDictionary;
import com.itextpdf.kernel.pdf.PdfLiteral;
import com.itextpdf.kernel.pdf.PdfName;
import com.itextpdf.kernel.pdf.PdfObject;
import com.itextpdf.kernel.pdf.PdfObjectWrapper;
class MacPdfObject extends PdfObjectWrapper {
MacPdfObject(int macContainerSize) {
super(new PdfDictionary());
PdfLiteral macPlaceholder = new PdfLiteral(macContainerSize);
PdfLiteral byteRangePlaceholder = new PdfLiteral(80);
getPdfObject().put(PdfName.MACLocation, PdfName.Standalone);
getPdfObject().put(PdfName.MAC, macPlaceholder);
getPdfObject().put(PdfName.ByteRange, byteRangePlaceholder);
}
long[] computeByteRange(long totalLength) {
PdfLiteral macPlaceholder = getMacPlaceholder();
long macStart = macPlaceholder.getPosition();
long macLength = macPlaceholder.getBytesCount();
long macEnd = macStart + macLength;
return new long[] {0, macStart, macEnd, totalLength - macEnd};
}
long getByteRangePosition() {
return getByteRangePlaceholder().getPosition();
}
private PdfLiteral getMacPlaceholder() {
PdfObject mac = getPdfObject().get(PdfName.MAC);
return (PdfLiteral) mac;
}
private PdfLiteral getByteRangePlaceholder() {
PdfObject br = getPdfObject().get(PdfName.ByteRange);
return (PdfLiteral) br;
}
@Override
protected boolean isWrappedObjectMustBeIndirect() {
return false;
}
}
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