Bug 115393 - 1bpp B&W PNG images are mis-exported to PDF (as black boxes)
Summary: 1bpp B&W PNG images are mis-exported to PDF (as black boxes)
Status: RESOLVED DUPLICATE of bug 115297
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Printing and PDF export (show other bugs)
Version:
(earliest affected)
5.4.4.2 release
Hardware: All Linux (All)
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-02-02 09:08 UTC by Michał Kępień
Modified: 2018-02-02 09:42 UTC (History)
1 user (show)

See Also:
Crash report or crash signature:

Attachments
Example problematic image (451 bytes, image/png)
2018-02-02 09:17 UTC, Michał Kępień 		Details
Writer document with the example problematic image inserted (9.61 KB, application/vnd.oasis.opendocument.text)
2018-02-02 09:18 UTC, Michał Kępień 		Details
Writer document exported to PDF using LibreOffice 5.4.3.2 (good) (2.25 KB, application/pdf)
2018-02-02 09:19 UTC, Michał Kępień 		Details
Writer document exported to PDF using LibreOffice 5.4.4.2 (bad) (2.07 KB, application/pdf)
2018-02-02 09:20 UTC, Michał Kępień 		Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Michał Kępień 2018-02-02 09:08:31 UTC 
Description:
When exported to PDF, 1bpp B&W PNG images are turned into boxes filled
with black.


Steps to Reproduce:
1. Insert a 1bpp B&W PNG image into a Writer document.
2. Export the document to PDF.
3. View the resulting PDF in any PDF viewer.


Actual Results:  
In the exported PDF, the inserted image is displayed as a black box.

Expected Results:
In the exported PDF, the inserted image should retain its original
contents.



Reproducible: Always


User Profile Reset: Yes



Additional Info:
I believe this issue was introduced by the fix for Bug #113875.
Exporting 1bpp B&W PNG images to PDF worked fine in version 5.4.3.2.

Converting the inserted PNG image to RGB mode using GIMP works around
the problem.



User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:58.0) Gecko/20100101 Firefox/58.0
Comment 1 Michał Kępień 2018-02-02 09:17:24 UTC 
Created attachment 139518 [details]
Example problematic image
Comment 2 Michał Kępień 2018-02-02 09:18:56 UTC 
Created attachment 139519 [details]
Writer document with the example problematic image inserted
Comment 3 Michał Kępień 2018-02-02 09:19:53 UTC 
Created attachment 139520 [details]
Writer document exported to PDF using LibreOffice 5.4.3.2 (good)
Comment 4 Michał Kępień 2018-02-02 09:20:17 UTC 
Created attachment 139522 [details]
Writer document exported to PDF using LibreOffice 5.4.4.2 (bad)
Comment 5 Xisco Faulí 2018-02-02 09:42:17 UTC 
Hi,
Thanks for reporting this issue.
It seems like a dupe of bug 115297

*** This bug has been marked as a duplicate of bug 115297 ***