Bug 105362 - FILEEXPORT: Slides nearly black and unreadable when exported to PNG with transparency enabled
Summary: FILEEXPORT: Slides nearly black and unreadable when exported to PNG with tran...
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
(earliest affected) release
Hardware: All All
: medium normal
Assignee: Not Assigned
Keywords: bibisected, bisected, regression
Depends on:
Blocks: Presentation-Export Graphics-Export
  Show dependency treegraph
Reported: 2017-01-16 10:03 UTC by Telesto
Modified: 2022-06-09 12:32 UTC (History)
4 users (show)

See Also:
Crash report or crash signature:
Regression By: Armin Le Grand

Example file (19.17 KB, application/vnd.oasis.opendocument.presentation)
2017-01-16 10:03 UTC, Telesto

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Description Telesto 2017-01-16 10:03:29 UTC
Slides nearly black and unreadable when exported to PNG with transparency enabled

Steps to Reproduce:
1.Open attached file
2. Click File -> Export 
3. Select PNG
4. Click save
5. Click OK

Actual Results:  
Slides nearly black and unreadable

Expected Results:
Slides should be exported the same way LibO does

Reproducible: Always

User Profile Reset: No

Additional Info:
Found in
Build ID: 99eed82939999d9a9689788a4134dd05d5c20c5a
CPU Threads: 4; OS Version: Windows 6.19; UI Render: default; 
TinderBox: Win-x86@42, Branch:master, Time: 2017-01-14_23:37:40
Locale: nl-NL (nl_NL); Calc: CL

and in
Build ID: 490fc03b25318460cfc54456516ea2519c11d1aa
Locale: nl-NL (nl_NL)

but not in
Build ID: 37b43f919e4de5eeaca9b9755ed688758a8251fe
Locale: en-US (nl_NL)

User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0
Comment 1 Telesto 2017-01-16 10:03:56 UTC
Created attachment 130470 [details]
Example file
Comment 2 Xisco Faulí 2017-01-16 16:10:24 UTC
Confirmed in

Build ID: 36afb355ac37122d32d624db079def123ef548a2
CPU Threads: 4; OS Version: Linux 4.8; UI Render: default; VCL: gtk3; 
Locale: ca-ES (ca_ES.UTF-8); Calc: group
Comment 3 Aron Budea 2017-01-25 21:15:16 UTC Comment hidden (bibisection)
Comment 4 Aron Budea 2017-01-25 21:17:21 UTC
Bibisect points to the commit referenced below. Adding Cc: to Armin Le Grand, please take a look.

author		Armin Le Grand <Armin.Le.Grand@cib.de>	2016-03-02 16:21:10 (GMT)
committer	Michael Stahl <mstahl@redhat.com>	2016-03-02 21:29:48 (GMT)

"tdf#96922 Suppress EditView PageVisuailsation in GraphicExporter"
Comment 5 QA Administrators 2018-07-25 02:38:56 UTC Comment hidden (obsolete, spam)
Comment 6 QA Administrators 2021-04-09 03:46:45 UTC Comment hidden (obsolete)
Comment 7 Armin Le Grand 2022-01-05 09:45:22 UTC
Maybe double to tdf#122155, same commit identified
Comment 8 Julien Nabet 2022-03-05 16:51:45 UTC
Just for the record after eed83764088bfdfcc6513778f7dc83d649f550a3, I got:
a) the png seems ok with "Save transparency" is disabled
b) empty transparent PNG if "Save transparency" is enabled
so still KO