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https://issues.apache.org/jira/browse/PDFBOX-4068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16329163#comment-16329163
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Tilman Hausherr commented on PDFBOX-4068:
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OK, I'll go ahead for PDFormContentStream and you work with the rest...
something isn't perfect right now but I can't really tell what.
Some thoughts:
- why is AppendMode in PDAppearanceContentStream?
- the max number of digits 4 is for appearance streams because Adobe does it.
For ordinary user created form xobjects it isn't needed. But what if an
appearance stream uses form xobjects?
- nonStrokingColorSpaceStack is both in PDAbstractContentStream and in
PDPageContentStream
- a lean constructor with only outputStream sounds like a good idea, I'll start
with that.
> Create ContentStream for XObject forms
> --------------------------------------
>
> Key: PDFBOX-4068
> URL: https://issues.apache.org/jira/browse/PDFBOX-4068
> Project: PDFBox
> Issue Type: Task
> Components: PDModel
> Reporter: Tilman Hausherr
> Priority: Major
>
> We have a {{PDAppearanceContentStream}} for appearances but nothing for
> XObject forms.
> What we need should extend {{PDAbstractContentStream}} and should have a
> constructor like
> {code:java}
> public PDFormContentStream(PDFormXObject form) throws IOException
> {code}
> Alternatively, why not replace {{PDAppearanceContentStream}} ? Its parameter
> {{PDAppearanceStream}} is extended from {{PDFormXObject}} so we could just
> use the base class.
> We need this both for 2.0 and 3.* - we have users who have a really hard time
> fiddling with low level operators instead of using the methods.
> In 2.0 we could replace the parameter of {{PDPageContentStream}} that is
> currently {{PDAppearanceStream}}. This would be a non breaking change.
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