Bug 159688 - "Emphasis - Teeter" effect leaves image in random position
Summary: "Emphasis - Teeter" effect leaves image in random position
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
Version:
(earliest affected)
3.5.0 release
Hardware: All All
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords: implementationError
Depends on:
Blocks: PPTX-Animations
  Show dependency treegraph
 
Reported: 2024-02-12 11:24 UTC by Gerald Pfeifer
Modified: 2024-03-01 11:11 UTC (History)
2 users (show)

See Also:
Crash report or crash signature:


Attachments
Sample slide (PPTX) (6.18 MB, application/vnd.openxmlformats-officedocument.presentationml.presentation)
2024-02-12 11:24 UTC, Gerald Pfeifer
Details
Screenshot of presentation mode - effect of random tilt highlighted in red (2.09 MB, image/png)
2024-02-12 11:31 UTC, Gerald Pfeifer
Details

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Description Gerald Pfeifer 2024-02-12 11:24:50 UTC
Created attachment 192516 [details]
Sample slide (PPTX)

1. Open document
2. Invoke presentation mode

Actual outcome: the background image teeters and then lands in 
   a random position - different from one invocation to the next!
Expected outcome: the background image teeters and returns to its
   starting position.


(The sample document is PPTX and Impress may be defining the 
"Emphasis - Teeter" effect differently than PowerPoint, in which
case for interoperability we'd need a special mode. 

That said I'd challenge the idea of random effects like this in
presentations and believe Impress could/should be adjusted.)


Version: 24.8.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: 3d3242ef3a6f111d6220c60d5c1b968c7f46fc5f
CPU threads: 12; OS: Linux 6.6; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US

  all the way back to

Version: 7.0.7.0.0+
Build ID: 54e9dd41dc9dd45af12c9346199f601ea4a5994d
CPU threads: 12; OS: Linux 6.6; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
TinderBox: Linux-rpm_deb-x86_64@86-TDF, Branch:libreoffice-7-0, Time: 2021-05-07_08:22:18

at least.
Comment 1 Gerald Pfeifer 2024-02-12 11:31:30 UTC
Created attachment 192517 [details]
Screenshot of presentation mode - effect of random tilt highlighted in red
Comment 2 Stéphane Guillou (stragu) 2024-02-27 13:55:37 UTC
Reproduced on:

Version: 24.8.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: d2fa44db6f8a1badece63856ee0f12db4cba9b28
CPU threads: 8; OS: Linux 6.5; UI render: default; VCL: gtk3
Locale: en-AU (en_AU.UTF-8); UI: en-US
Calc: threaded

Checking with the linux-64-releases bibisect repo, the animation always looked bad, since it was imported and used in libreoffice-3.5.0rc3.
In libreoffice-3.4.6rc2, no animation is listed in the sidebar.

No difference if saved as ODP.

MS Office 365 (web) does show the animation listed (as "Existing"), but does not animate the image when presenting.
OnlyOffice animates properly.