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Parses XML to PDF, with CSS support, using iText
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/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2022 iText Group NV
* Authors: Balder Van Camp, Emiel Ackermann, 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: [email protected]
*/
package com.itextpdf.tool.xml.html;
import java.util.ArrayList;
import java.util.List;
import com.itextpdf.text.Chunk;
import com.itextpdf.text.Element;
import com.itextpdf.text.Font;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfDiv;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.tool.xml.NoCustomContextException;
import com.itextpdf.tool.xml.Tag;
import com.itextpdf.tool.xml.WorkerContext;
import com.itextpdf.tool.xml.exceptions.LocaleMessages;
import com.itextpdf.tool.xml.exceptions.RuntimeWorkerException;
import com.itextpdf.tool.xml.html.pdfelement.NoNewLineParagraph;
import com.itextpdf.tool.xml.pipeline.html.HtmlPipelineContext;
/**
* @author redlab_b
*
*/
public class Div extends AbstractTagProcessor {
/* (non-Javadoc)
* @see com.itextpdf.tool.xml.TagProcessor#content(com.itextpdf.tool.xml.Tag, java.lang.String)
*/
@Override
public List content(final WorkerContext ctx, final Tag tag, final String content) {
List sanitizedChunks = HTMLUtils.sanitize(content, false);
NoNewLineParagraph noNewLineParagraph = new NoNewLineParagraph();
List l = new ArrayList(1);
try {
HtmlPipelineContext htmlPipelineContext = getHtmlPipelineContext(ctx);
for (Chunk sanitized : sanitizedChunks) {
noNewLineParagraph.add(getCssAppliers().apply(sanitized, tag, htmlPipelineContext));
}
if (noNewLineParagraph.size() > 0) {
l.add(getCssAppliers().apply(noNewLineParagraph, tag, htmlPipelineContext));
}
} catch (NoCustomContextException e) {
throw new RuntimeWorkerException(e);
}
return l;
}
/*
* (non-Javadoc)
*
* @see
* com.itextpdf.tool.xml.TagProcessor#endElement(com.itextpdf.tool.xml.Tag,
* java.util.List, com.itextpdf.text.Document)
*/
@Override
public List end(final WorkerContext ctx, final Tag tag, final List currentContent) {
try {
Paragraph p = null;
PdfDiv div = (PdfDiv)getCssAppliers().apply(new PdfDiv(), tag, getHtmlPipelineContext(ctx));
int direction = getRunDirection(tag);
if (direction != PdfWriter.RUN_DIRECTION_NO_BIDI) {
div.setRunDirection(direction);
}
for (Element e : currentContent) {
if (e instanceof Paragraph || e instanceof PdfPTable|| e instanceof PdfDiv) {
if (p != null) {
if (p.trim()) {
div.addElement(p);
}
p = null;
}
div.addElement(e);
} else {
if (p == null) {
p = new Paragraph();
p.setAlignment(div.getTextAlignment());
if (direction == PdfWriter.RUN_DIRECTION_RTL) {
invertTextAlignForParagraph(p);
}
p.setMultipliedLeading(1.2f);
}
p.add(e);
}
}
if (p != null && p.trim()) {
div.addElement(p);
}
if (direction == PdfWriter.RUN_DIRECTION_RTL) {
invertTextAlignForDiv(div);
}
List l = new ArrayList(1);
l.add(div);
return l;
} catch (NoCustomContextException e) {
throw new RuntimeWorkerException(LocaleMessages.getInstance().getMessage(LocaleMessages.NO_CUSTOM_CONTEXT), e);
}
}
private void invertTextAlignForDiv(PdfDiv div) {
switch (div.getTextAlignment()) {
case Element.ALIGN_UNDEFINED:
case Element.ALIGN_CENTER:
case Element.ALIGN_JUSTIFIED:
case Element.ALIGN_JUSTIFIED_ALL:
break;
case Element.ALIGN_RIGHT:
div.setTextAlignment(Element.ALIGN_LEFT);
break;
case Element.ALIGN_LEFT:
default:
div.setTextAlignment(Element.ALIGN_RIGHT);
break;
}
}
/* (non-Javadoc)
* @see com.itextpdf.tool.xml.TagProcessor#isStackOwner()
*/
@Override
public boolean isStackOwner() {
return true;
}
}