Bug 157529 - FILEOPEN PPTX: Text shows that is invisible in PowerPoint
Summary: FILEOPEN PPTX: Text shows that is invisible in PowerPoint
Status: VERIFIED FIXED
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
Version:
(earliest affected)
6.4 all versions
Hardware: All All
: medium normal
Assignee: Tibor Nagy
URL:
Whiteboard: target:25.2.0 target:24.8.0.0.beta2
Keywords:
Depends on:
Blocks: Impress-Gradient OOXML-WordArt PPTX-Textbox
  Show dependency treegraph
 
Reported: 2023-09-30 11:18 UTC by Gerald Pfeifer
Modified: 2024-06-27 08:48 UTC (History)
2 users (show)

See Also:
Crash report or crash signature:


Attachments
Sample slide (PPTX) (38.70 KB, application/vnd.openxmlformats-officedocument.presentationml.presentation)
2023-09-30 11:18 UTC, Gerald Pfeifer
Details
Screenshot with issue highlighted in red (31.25 KB, image/png)
2023-09-30 11:25 UTC, Gerald Pfeifer
Details
The example file in PP 2016 and Impress (134.57 KB, image/png)
2023-10-02 18:11 UTC, Gabor Kelemen (allotropia)
Details

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Description Gerald Pfeifer 2023-09-30 11:18:44 UTC
Created attachment 189904 [details]
Sample slide (PPTX)

Both in edit mode and in presentation mode Impress shows two text boxes
"Network" in green, which PowerPoint shows in neither mode.


Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: f8e591ab9182e0a61c4ae5b8f77b166fcaeaa877
CPU threads: 8; OS: Linux 6.5; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US

...and all the way back to (at least) LibreOffice 6.4. This does not 
appear to be a regression.


This looks strikingly similar to bug #149588 which was about transparency
at SolidFill. It is not addressed by the fix there, though.
Comment 1 Gerald Pfeifer 2023-09-30 11:25:49 UTC
Created attachment 189905 [details]
Screenshot with issue highlighted in red
Comment 2 Gabor Kelemen (allotropia) 2023-10-02 18:11:59 UTC
Created attachment 189960 [details]
The example file in PP 2016 and Impress

Confirming in 

Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: 2902ab24ecc5ffbf4907ea83b2028508b9de6364
CPU threads: 15; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win
Locale: en-US (hu_HU); UI: en-US
Calc: threaded

We have fontwork here, and the network word has seemingly a different font color + transparency given on different letters: 2c8685 and white color plus 100% transparency in PP, becomes 2c8685 and no transparency in Impress.
Comment 3 Gerald Pfeifer 2024-06-06 14:36:46 UTC
Confirming this is still the case with

  Version: 24.8.0.0.alpha1+ (X86_64) / LibreOffice Community
  Build ID: 9e873da55c925b0a960950e9edd1e615e54b8edd
  CPU threads: 12; OS: Linux 6.9; UI render: default; VCL: gtk3
  Locale: en-US (en_US.UTF-8); UI: en-US
Comment 4 Commit Notification 2024-06-22 19:09:24 UTC
Tibor Nagy committed a patch related to this issue.
It has been pushed to "master":

https://git.libreoffice.org/core/commit/513c2bdbb1e7c0ad669d03043db61c94d6524aba

tdf#157529 PPTX import: fix transparency value

It will be available in 25.2.0.

The patch should be included in the daily builds available at
https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
https://wiki.documentfoundation.org/Testing_Daily_Builds

Affected users are encouraged to test the fix and report feedback.
Comment 5 Gerald Pfeifer 2024-06-23 19:10:55 UTC
Happy to verify as fixed with the latest night build:

  Version: 25.2.0.0.alpha0+ (X86_64) / LibreOffice Community
  Build ID: 513c2bdbb1e7c0ad669d03043db61c94d6524aba
  CPU threads: 12; OS: Linux 6.9; UI render: default; VCL: gtk3
  Locale: en-US (en_US.UTF-8); UI: en-US
Comment 6 Gerald Pfeifer 2024-06-23 22:31:33 UTC
Marking verified per comment #5.
Comment 7 Commit Notification 2024-06-27 08:48:59 UTC
Tibor Nagy committed a patch related to this issue.
It has been pushed to "libreoffice-24-8":

https://git.libreoffice.org/core/commit/6f989266ca9880290832196cd115468d1a645b4b

tdf#157529 PPTX import: fix transparency value

It will be available in 24.8.0.0.beta2.

The patch should be included in the daily builds available at
https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
https://wiki.documentfoundation.org/Testing_Daily_Builds

Affected users are encouraged to test the fix and report feedback.