Package com.itextpdf.text.pdf.ocg
Class OCGRemover
- java.lang.Object
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- com.itextpdf.text.pdf.ocg.OCGRemover
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public class OCGRemover extends java.lang.Object
Class that knows how to remove OCG layers.
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Constructor Summary
Constructors Constructor Description OCGRemover()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description private boolean
isToBeRemoved(PdfDictionary ocg, java.util.Set<java.lang.String> names)
Checks if an OCG dictionary is on the list for removal.private void
parse(OCGParser parser, PdfDictionary page)
Uses the OCGParser on a pageprivate void
removeAnnots(PdfDictionary page, java.util.Set<java.lang.String> ocgs)
Removes annotations from a page dictionaryvoid
removeLayers(PdfReader reader, java.lang.String... layers)
Removes layers from a PDF documentprivate void
removeOCGsFromArray(PdfArray array, java.util.Set<java.lang.String> ocgs)
Searches an array for references to OCGs that need to be removed.private void
removeOCGsFromArray(PdfDictionary dict, PdfName name, java.util.Set<java.lang.String> ocgs)
Gets an array from a dictionary and checks if it contains references to OCGs that need to be removedprivate void
removeProperties(PdfDictionary page, java.util.Set<java.lang.String> ocgs)
Removes ocgs from a page resources
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Method Detail
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removeLayers
public void removeLayers(PdfReader reader, java.lang.String... layers) throws java.io.IOException
Removes layers from a PDF document- Parameters:
reader
- a PdfReader containing a PDF documentlayers
- a sequence of names of OCG layers- Throws:
java.io.IOException
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removeOCGsFromArray
private void removeOCGsFromArray(PdfDictionary dict, PdfName name, java.util.Set<java.lang.String> ocgs)
Gets an array from a dictionary and checks if it contains references to OCGs that need to be removed- Parameters:
dict
- the dictionaryname
- the name of an array entryocgs
- the removal list
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removeOCGsFromArray
private void removeOCGsFromArray(PdfArray array, java.util.Set<java.lang.String> ocgs)
Searches an array for references to OCGs that need to be removed.- Parameters:
array
- the arrayocgs
- the removal list
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removeAnnots
private void removeAnnots(PdfDictionary page, java.util.Set<java.lang.String> ocgs)
Removes annotations from a page dictionary- Parameters:
page
- a page dictionaryocgs
- a set of names of OCG layers
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removeProperties
private void removeProperties(PdfDictionary page, java.util.Set<java.lang.String> ocgs)
Removes ocgs from a page resources- Parameters:
page
- a page dictionaryocgs
- a set of names of OCG layers
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isToBeRemoved
private boolean isToBeRemoved(PdfDictionary ocg, java.util.Set<java.lang.String> names)
Checks if an OCG dictionary is on the list for removal.- Parameters:
ocg
- a dictionarynames
- the removal list- Returns:
- true if the dictionary should be removed
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parse
private void parse(OCGParser parser, PdfDictionary page) throws java.io.IOException
Uses the OCGParser on a page- Parameters:
parser
- the OCGParserpage
- the page dictionary of the page that needs to be parsed.- Throws:
java.io.IOException
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