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https://issues.apache.org/jira/browse/PDFBOX-4399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16744394#comment-16744394
]
Tilman Hausherr commented on PDFBOX-4399:
-----------------------------------------
One can filter the active text in the stripper by adding this code:
in constructor:
{code}
addOperator(new BeginMarkedContentSequence());
addOperator(new BeginMarkedContentSequenceWithProperties());
addOperator(new EndMarkedContentSequence()); }
{code}
At the beginning of processTextPosition:
{code}
if (!isContentRendered())
{
return;
}
{code}
and at the end:
{code}
@Override
public void beginMarkedContentSequence(COSName tag, COSDictionary
properties)
{
if (nestedHiddenOCGCount > 0)
{
nestedHiddenOCGCount++;
return;
}
if (tag == null || getCurrentPage().getResources() == null)
{
return;
}
PDPropertyList propertyList =
getCurrentPage().getResources().getProperties(tag);
if (propertyList instanceof PDOptionalContentGroup)
{
PDOptionalContentGroup group = (PDOptionalContentGroup)
propertyList;
PDOptionalContentGroup.RenderState printState =
group.getRenderState(RenderDestination.EXPORT /**/);
if (printState == null)
{
if (!isGroupEnabled(group))
{
nestedHiddenOCGCount = 1;
}
}
else if (PDOptionalContentGroup.RenderState.OFF.equals(printState))
{
nestedHiddenOCGCount = 1;
}
}
}
@Override
public void endMarkedContentSequence()
{
if (nestedHiddenOCGCount > 0)
{
nestedHiddenOCGCount--;
}
}
private boolean isContentRendered()
{
return nestedHiddenOCGCount <= 0;
}
private int nestedHiddenOCGCount;
public boolean isGroupEnabled(PDOptionalContentGroup group) /**/
{
PDOptionalContentProperties ocProperties =
document.getDocumentCatalog().getOCProperties();
return ocProperties == null || ocProperties.isGroupEnabled(group);
}
{code}
After that worked I tried to move it to the base class and failed - we need
PDPage and PDDocument. The base class doesn't have access to the document.
I'm not sure if we should pass PDDocument to the base class, although I don't
see a reason against it.
But considering that no user has asked for the feature, I'm resolving this. We
can still open a new issue.
> Disabled optional content groups are rendered
> ---------------------------------------------
>
> Key: PDFBOX-4399
> URL: https://issues.apache.org/jira/browse/PDFBOX-4399
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.6, 2.0.13
> Reporter: Stefan Ziel
> Priority: Major
> Labels: OCGs
> Fix For: 2.0.14, 3.0.0 PDFBox
>
> Attachments: 1822-AGB.pdf,
> PDFBOX-4399-046615_p9_OCG-NoRotate-Annotations.pdf, PDFBOX-4399-2.patch,
> gs.png, original.pdf, pop-bugzilla42823-OCG.pdf, printed.png
>
>
> Printing a Documents with hidden optional content groups [^original.pdf]
> renders hidden content [^printed.png]. Code used to print
> {code:java}
> InputStream sourceStream = new FileInputStream(pFile);
> try {
> PDDocument source = PDDocument.load(sourceStream);
> job.setPageable(new PDFPageable(source));
> job.print(atts);
> } finally {
> sourceStream.close();
> }
> {code}
> This is not only a problem of PDFBox ;) but can be done right ... ghostscript
> does it [^gs.png].
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