[jira] [Commented] (PDFBOX-4249) After flattening, barcode fields are always at the lower left corner of the page

["Xin Lin (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PDFBOX-4249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16520761#comment-16520761 ] 

Xin Lin commented on PDFBOX-4249:
---------------------------------

When flattening  [^barcode.pdf] with just a single barcode field using PDFBox 2.0.9, the barcode field in the flattened file  [^barcode flattened.pdf] is at the lower left corner of the page.
I traced it to line 308 in PDAcroForm.java:
{code:java}
 boolean needsTranslation = resolveNeedsTranslation(appearanceStream);
{code}
If I changed that to 
{code:java}
 boolean needsTranslation = true;
{code}
The field will appear in the correct position. 

In the method resolveNeedsTranslation starting from line 748

{code:java}
 if (xObject instanceof PDFormXObject)
                    {
                        PDRectangle bbox = ((PDFormXObject)xObject).getBBox();
                        float llX = bbox.getLowerLeftX();
                        float llY = bbox.getLowerLeftY();
                        if (llX == 0 && llY == 0)
                        {
                            needsTranslation = true;
                        }
                    }
{code}
The xObject in this case is an instance of PDImageXObject, resolveNeedsTranslation() in this case will always return false.


> After flattening, barcode fields are always at the lower left corner of the page
> --------------------------------------------------------------------------------
>
>                 Key: PDFBOX-4249
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4249
>             Project: PDFBox
>          Issue Type: Bug
>    Affects Versions: 2.0.9
>            Reporter: Xin Lin
>            Priority: Major
>         Attachments: barcode flattened.pdf, barcode.pdf
>
>




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