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
[email protected]<mailto:[email protected]>
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