Package com.itextpdf.text.pdf.util
Class PdfResourceCounter
java.lang.Object
com.itextpdf.text.pdf.util.PdfResourceCounter
This class can be used to count the number of bytes needed when copying
pages from an existing PDF into a newly created PDF.
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Field Summary
Fields -
Constructor Summary
ConstructorsConstructorDescriptionPdfResourceCounter
(PdfObject object) Creates a PdfResourceCounter instance to be used to count the resources needed for either a page (in this case pass a page dictionary) or the trailer (root and info dictionary) of a PDF file. -
Method Summary
Modifier and TypeMethodDescriptionlong
Returns the resources needed for the object that was used to create this PdfResourceCounter.Returns a map with the resources.protected final void
In case an object is an array, a dictionary or a stream, we need to loop over the entries and process them one by one.protected final void
Processes an object.
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Field Details
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resources
A map of the resources that are already taken into account
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Constructor Details
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PdfResourceCounter
Creates a PdfResourceCounter instance to be used to count the resources needed for either a page (in this case pass a page dictionary) or the trailer (root and info dictionary) of a PDF file.- Parameters:
object
- the object we want to examine
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Method Details
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process
Processes an object. If the object is indirect, it is added to the list of resources. If not, it is just processed.- Parameters:
object
- the object to process
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loopOver
In case an object is an array, a dictionary or a stream, we need to loop over the entries and process them one by one.- Parameters:
object
- the object to examine
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getResources
Returns a map with the resources.- Returns:
- the resources
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getLength
Returns the resources needed for the object that was used to create this PdfResourceCounter. If you pass a Map with resources that were already used by other objects, these objects will not be taken into account.- Parameters:
res
- the resources that can be excluded when counting the bytes- Returns:
- the number of bytes needed for an object
- Throws:
IOException
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