FlattenAnnot

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   Hi guys, we found some issues with FlattenAnnot... (v11.15)
Here is the pdf:

Before: http://tinyurl.com/og3hffn

When we loop over each annotation, only 4 out of 8 annotations are actually flattened (returns 1), the other 4 are not (returns 0), and as you can see, after flattening one of the annotations has jumbled text:

After: http://tinyurl.com/p9r23hu (note: looks fine when rendered in Chrome, but in Adobe Reader you can see the jumbled text)

The jumbled text is really causing a problem, need to prevent this.

Code (VB.NET):

Q.LoadFromFile(PathToPDF, "")
Dim pc As Integer = Q.PageCount

' loop over pages
For i = 1 To pc

Dim ac As Integer = Q.AnnotationCount

' flatten each annotation on this page
For a = 1 To ac
Dim f = Q.FlattenAnnot(a, 0)
Dim g = ""
Next

Next

' save
Q.SaveToFile(PathToPDF)

Edited by CrazyTIm - 15 Sep 15 at 5:04AM

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CrazyTIm Members Profile Find Members Posts Team Player Joined: 21 Aug 11 Location: Australia Status: Offline Points: 29	Post Options Post Reply Quote CrazyTIm Report Post Thanks(0) Quote Reply Topic: FlattenAnnot Posted: 28 Aug 15 at 6:34AM
	Hi guys, we found some issues with FlattenAnnot... (v11.15) Here is the pdf: Before: http://tinyurl.com/og3hffn When we loop over each annotation, only 4 out of 8 annotations are actually flattened (returns 1), the other 4 are not (returns 0), and as you can see, after flattening one of the annotations has jumbled text: After: http://tinyurl.com/p9r23hu (note: looks fine when rendered in Chrome, but in Adobe Reader you can see the jumbled text) The jumbled text is really causing a problem, need to prevent this. Code (VB.NET): Q.LoadFromFile(PathToPDF, "") Dim pc As Integer = Q.PageCount ' loop over pages For i = 1 To pc Dim ac As Integer = Q.AnnotationCount ' flatten each annotation on this page For a = 1 To ac Dim f = Q.FlattenAnnot(a, 0) Dim g = "" Next Next ' save Q.SaveToFile(PathToPDF) Edited by CrazyTIm - 15 Sep 15 at 5:04AM

jpbro Members Profile Find Members Posts Senior Member Joined: 29 Mar 11 Status: Offline Points: 77	Post Options Post Reply Quote jpbro Report Post Thanks(1) Quote Reply Posted: 28 Aug 15 at 11:13PM
	Try looping backwards, or with your current loop call Q.FlattenAnnot(1, 0) instead of (a, 0). I think when you flatten an annotation the count changes, so you are only going to flatten half the annotations using your current approach.

CrazyTIm Members Profile Find Members Posts Team Player Joined: 21 Aug 11 Location: Australia Status: Offline Points: 29	Post Options Post Reply Quote CrazyTIm Report Post Thanks(0) Quote Reply Posted: 31 Aug 15 at 1:21AM
	Ok that solves the problem of only half of them flattening! Thanks mate. We still have the issue where the text is reversed (mirrored), any thoughts about this? Its not readable as the characters sometimes overlap each other and this is a real issue. Jason.

CrazyTIm Members Profile Find Members Posts Team Player Joined: 21 Aug 11 Location: Australia Status: Offline Points: 29	Post Options Post Reply Quote CrazyTIm Report Post Thanks(0) Quote Reply Posted: 31 Aug 15 at 2:29AM
	Ok folks, so there is this useful function called NormalizePage(), not sure if anyone has heard about it :P Turns out calling this before flattening annotations will prevent the text from being mirrored. I don't know if it works in all cases, but for now this seems to be working for a few different pdfs I've tested with. Cheers, Jason.

CrazyTIm Members Profile Find Members Posts Team Player Joined: 21 Aug 11 Location: Australia Status: Offline Points: 29	Post Options Post Reply Quote CrazyTIm Report Post Thanks(0) Quote Reply Posted: 15 Sep 15 at 4:19AM
	Hi all, I have found a different pdf where calling NormalizePage() before flattening annotations results in no annotations at all. This is frustrating, because the solution to the first issue raised a second issue :) Can someone help me understand why calling NormalizePage() and then flatten doesn't work on this pdf. How I can solve this new problem? pdf #2 before flattening: http://tinyurl.com/nu6gw42 pdf #2 after flattening (no annotations!): http://tinyurl.com/qhwd2g7 Thanks, Jason Edited by CrazyTIm - 15 Sep 15 at 5:29AM