[
https://issues.apache.org/jira/browse/PDFBOX-4615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16897380#comment-16897380
]
Michael Klink commented on PDFBOX-4615:
---------------------------------------
{quote}I suspect that this is a duplicate of PDFBOX-4471{quote}
Indeed!
E.g. the text box {{GrowthBOY}} has a *Rect* of {{[ 377.786 188.797 584.631
241.047 ]}}, a 206.845×52.25 area, but the existing appearance has a *BBox* of
{{[ 0.0 0.0 118.68 52.25 ]}}.
Thus, under the assumption that reusing the appearance stream is appropriate,
the bug is not that there are so few characters per line but instead that
during flattening the appearance was not stretched horizontally to fill the
whole 206.845×52.25 area.
> AppearanceGeneratorHelper.setAppearanceValue doesn't set the bounding box on
> the appearance stream correctly
> ------------------------------------------------------------------------------------------------------------
>
> Key: PDFBOX-4615
> URL: https://issues.apache.org/jira/browse/PDFBOX-4615
> Project: PDFBox
> Issue Type: Bug
> Components: AcroForm
> Affects Versions: 2.0.16
> Reporter: Rosalind Douglas
> Priority: Major
> Attachments: flattenedboundingbox.pdf, resetboundingbox.pdf
>
>
> Hello, thanks for all your effort with PDFBox. We use it heavily for parsing
> and flattening PDFs.
> BUG: In the attached PDF "resetboundingbox.pdf", we programmatically set the
> value of the text fields, then call pdAcroForm.flattten(), which produces the
> flattened PDF "flattenedboundingbox.pdf." I would expect that the text would
> entirely fill the text box (see textbox with {color:#8eb021}green
> border{color} in "flattenedboundingbox.pdf") but the text does not. Instead,
> the filled text area obeys another box instead (see text area with
> {color:#d04437}red border{color} in "flattenedboundingbox.pdf").
> POTENTIAL FIX: We've traced the problem to
> AppearanceGeneratorHelper.setAppearanceValue, lines 200-210. As long as we
> always set the bounding box (line 243) like in
> AppearanceGeneratorHelper.prepareNormalAppearanceStream, regardless of the
> if/else at line 200, then the flattening works correctly:
> {code:java}
> /** * replace AppearanceGeneratorHelper lines 199-210 with: */
> PDAppearanceStream appearanceStream = appearance != null &&
> appearance.isStream() ? appearance.getAppearanceStream() : new
> PDAppearanceStream(field.getAcroForm().getDocument());
>
> // copied from lines 237-243
> int rotation = resolveRotation(widget);
> PDRectangle rect = widget.getRectangle();
> Matrix matrix = Matrix.getRotateInstance(Math.toRadians(rotation), 0, 0);
> Point2D.Float point2D = matrix.transformPoint(rect.getWidth(),
> rect.getHeight());
> PDRectangle bbox = new PDRectangle(Math.abs((float) point2D.getX()),
> Math.abs((float) point2D.getY()));
> appearanceStream.setBBox(bbox);
> appearanceDict.setNormalAppearance(appearanceStream);
> {code}
> Something I'm not sure about: in method prepareNormalAppearanceStream, there
> is additional code for setting the matrix (lines 245-251), which we don't
> seem to need. Since it doesn't break anything, we just keep it too.
> Thanks again for your help!
--
This message was sent by Atlassian JIRA
(v7.6.14#76016)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
