Load Annotations before rendering PDF

Technical Support Apryse SDK
1

Is it possible to load annotations before (or during) rendering of the PDF ?

I have a large PDF that takes 30s to load and then annotations in Xfdf get loaded just after the rendering is finished. Which is a lot of time to wait.

I tried this so far (in Swift), and am a little confused with locks and unlocks, maybe that’s the problem.
Answers in any language are Ok.

`

// OPEN DOCUMENT

ctrl.setProgressiveRendering(true, withInitialDelay: 0, withInterval: 750)
ctrl.setDoc(docToOpen)

//LOCK WRITE PERMISSION
ctrl.getDoc().lock()

// LOAD TOOL MANAGER
self.toolManager = ToolManager(pdfViewCtrl: ctrl)
ctrl.toolDelegate = self.toolManager;
_ = self.toolManager?.changeTool(PanTool.self)

// ANNOTATION TO LOAD IN XFDF
let str : String = “<?xml version=\"1.0\" encoding=\"UTF-8\" ?><xfdf xmlns=“http://ns.adobe.com/xfdf” xml:space=“preserve”><polyline subject=“Polyline” page=“0” rect=“209.407465,97.622084,320.782271,147.821151” flags=“print” name=“55603d93-2c7f-4006-7162-e163257071d5” title=“Guest” date=“D:20171018190626+02’00’” color=”#000000" width=“1” opacity=“1” creationdate=“D:20171018190624+02’00’” head=“None” tail=“None”><popup flags=“print,nozoom,norotate” page=“0” rect=“0,742,150,842” open=“no”/>210.41,98.62;319.78,146.82"

// CREATE AND MERGE THE XFDF TO FDF TO PDF DOC
let fdfDoc : PTFDFDoc = PTFDFDoc.create(fromXFDF: str)
docToOpen?.fdfMerge(fdfDoc)
ctrl.update()

// UNLOCK THE WRITE PERMISSION AND CONTINUE TO RENDER PDF
ctrl.getDoc().unlock()

`

Thanks in advance for your help.

2

Do you mean 30 seconds to see the first page, or 30 seconds till everything is “loaded”?

How do you instantiate the PDFDoc object?

At the very least, I would move the lock to just surround the fdfmerge. You are locking too soon/long.

let fdfDoc : PTFDFDoc = PTFDFDoc.create(fromXFDF: str) ctrl.docLock() docToOpen?.fdfMerge(fdfDoc) ctrl.update() ctrl.docUnlock()

But I would like to investigate further the 30 seconds issue.

The other alternative, and which might work best for you, is to merge the annotations before opening the document.

let fdfDoc : PTFDFDoc = PTFDFDoc.create(fromXFDF: str) docToOpen?.fdfMerge(fdfDoc) ctrl.setDoc(docToOpen)