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From Ted Snider <ted.sni...@blackboard.com>
Subject Re: Cannot get annotations to appear in PDF
Date Wed, 23 May 2018 17:30:14 GMT
The PDF.

Ted Snider
Senior Software Engineer
Product Development

M: 317.914.2535
Ted.snider@blackboard.com

Blackboard


´╗┐On 5/23/18, 1:28 PM, "Ted Snider" <ted.snider@blackboard.com> wrote:

    I am involved with a project trying to add annotations to an existing PDF.

    I am starting by trying to add a highlight.

    I create the object as follows:

    public class HighlightAnnotationBuilder extends AnnotationBuilder

    {

      public HighlightAnnotationBuilder( PDPage page, float[][] quads )

      {

        if ( quads != null && quads.length > 0 && quads[0].length >
0)

        {

          PDAnnotationTextMarkup highlight = new PDAnnotationTextMarkup( PDAnnotationTextMarkup.SUB_TYPE_HIGHLIGHT
);

          PDRectangle box = new PDRectangle();

          box.setLowerLeftX( quads[0][4] );

          box.setLowerLeftY( quads[0][5] );

          box.setUpperRightX( quads[0][2] );

          box.setUpperRightY( quads[0][3] );

          highlight.setRectangle( box );

          highlight.setColor( YELLOW );

          highlight.setContents( " placeholder " );

          highlight.setConstantOpacity( ( float ) 0.8 );

          highlight.setQuadPoints( quads[0] );

          highlight.setPage( page );



          _annotations.add( highlight );

        }

      }

    }

    Add add the contents of _annotations to the pdf and save it.

    I can parse the object from the file after closing an reopening it.  The debug output
looks like this:

    12:52:50.738 [main] DEBUG blackboard.annotationRenderer.pdf.parser.PDFReaderTest - Annotation:
org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationTextMarkup

    12:52:50.742 [main] DEBUG blackboard.annotationRenderer.pdf.parser.PDFReaderTest - Rectangle:
(72.000000, 684.000000), (208.793701, 720.000000); Quads: [ 72.000000, 720.000000, 208.793701,
720.000000, 72.000000, 684.000000, 208.793701, 684.000000, ]

    12:52:50.742 [main] DEBUG blackboard.annotationRenderer.pdf.parser.PDFReaderTest - Hidden?
false. Invisible? false. No View? false. Toggle No View? false

    12:52:50.743 [main] DEBUG blackboard.annotationRenderer.pdf.parser.PDFReaderTest - Contents:
 placeholder

    But it does not appear in the PDF when I open it in a viewer (Acrobat, etc.).

    I have attached the PDF and would appreciate any advice.

    Ted Snider
    Senior Software Engineer
    Product Development

    M: 317.914.2535
    Ted.snider@blackboard.com<mailto:Ted.snider@blackboard.com>

    Blackboard

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