Oleksandr created FOP-3290:
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Summary: Issue with <fo:basic-link> to external .pdf files
Key: FOP-3290
URL: https://issues.apache.org/jira/browse/FOP-3290
Project: FOP
Issue Type: Bug
Affects Versions: 2.11
Reporter: Oleksandr
Attachments: broken_pdf_link_example.zip
h3. *Description*
When generating a PDF using XSL-FO, the links to external local {{.pdf}} files
behave differently from the links to files with another extensions ( .png, .txt
etc ). In some PDF viewes ( for example in Chrome PDF viewer ) when a user
clicks such a link the target file is not opened. If the same link points to a
{{.png or }}{{.txt}} file, it works properly ( the targer file is being opened).
h3. Steps to Reproduce
# Use the following XSL-FO to generate a PDF:
<fo:basic-link show-destination="new" external-destination="targetFile.pdf">
Test Link (PDF)
</fo:basic-link>
<fo:basic-link show-destination="new" external-destination="targetFile.png">
Test Link (PNG)
</fo:basic-link>{{}}
# Open the resulting PDF in Chrome PDF viewer
# Click the PNG link (the PNG file is opened, as expected)
# Click the PDF link
*Actual Result:* the targetFile.pdf file is not opened
*Expected Result:* The targetFile.pdf is opened ( the PDF link behaves like the
PNG link)
Some PDF viewers handles the PDF link correctly ( for example, Acrobat Reader
on Windows 10 )
h3. Technical Analysis
The current implementation seems to have a hardcoded "special case" for files
ending in {{.pdf in }}{{PDFFactory#getExternalAction().}}
It forces creation of a {{PDFGoToRemote}} action of all external .pdf files.
For all other extensions it returns {{PDFUri}} which works correctly
I've tested other variations of link url, but none of them works for link to
.PDF file
* {{{{url('targetFile.pdf')}}}}
* {{url("targetFile.pdf"){{{}{}}}}}
* {{{{file:///targetFile.pdf}}}}
* {{{{targetFile.pdf#page=1}}}}
* {{{{etc}}}}
The issue doesn't appears in Apache FOP version 2.7 ( before the following code
was added to PDFFactory.java
{{if (scheme == null && filename.toLowerCase().endsWith(".pdf")) {}}
{{ scheme = "file";}}
{{}}}
Here is the full sample XSL-FO code and the archive with generated PDFs
{code:java}
<?xml version="1.0" encoding="UTF-8"?>
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format";>
<fo:layout-master-set>
<fo:simple-page-master master-name="A4" page-height="29.7cm"
page-width="21cm" margin="2cm">
<fo:region-body/>
</fo:simple-page-master>
</fo:layout-master-set>
<fo:page-sequence master-reference="A4">
<fo:flow flow-name="xsl-region-body">
<fo:block font-family="sans-serif" font-size="12pt">
<fo:block margin-bottom="10pt">
1. PDF Link (Expected to open file):
<fo:basic-link external-destination="targetFile.pdf"
color="blue" text-decoration="underline">
targetFile.pdf
</fo:basic-link>
</fo:block>
<fo:block>
2. Image Link (Working correctly):
<fo:basic-link external-destination="targetFile.png"
color="blue" text-decoration="underline">
targetFile.png
</fo:basic-link>
</fo:block>
</fo:block>
</fo:flow>
</fo:page-sequence>
</fo:root> {code}
{{{{}}}}
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