Bug 448988

Summary: Non-OpenGL "Random" transitions aren't random per image
Product: [Applications] digikam Reporter: Mike Morrison <mike>
Component: Plugin-Generic-PresentationAssignee: Digikam Developers <digikam-bugs-null>
Status: RESOLVED FIXED    
Severity: normal    
Priority: NOR    
Version First Reported In: 7.6.0   
Target Milestone: ---   
Platform: Appimage   
OS: Linux   
Latest Commit: https://invent.kde.org/graphics/digikam/commit/caf0fd17db7be3f8d3003a86630f87289b1cfc42 Version Fixed/Implemented In: 7.6.0
Sentry Crash Report:

Description Mike Morrison 2022-01-23 03:32:29 UTC 
SUMMARY
In the Presentation tool, when not using OpenGL transitions, the "Random" effect uses the same transition for all images in the presentation.

STEPS TO REPRODUCE
1. Navigate to an album of photos.
2. Ctrl-A to select all photos in the album.
3. Choose View > Presentation... (or Alt-Shift-F9)
4. Make sure "Use OpenGL transitions" is unchecked.
5. For "Effect", choose "Random".
6. Click "Start".

OBSERVED RESULT
With the above steps, a random effect is chosen each time a presentation is started, but the effect stays the same for every image in the presentation.

EXPECTED RESULT
I expected the effect to change randomly with each image, per https://docs.kde.org/trunk5/en/digikam-doc/digikam/tool-presentation.html "The Random selection will change the transition effect with every image."
(The expected behavior does occur when "Use OpenGL transitions" is checked.)

SOFTWARE/OS VERSIONS
digiKam-7.6.0-20220122T100523-x86-64.appimage
Ubuntu 21.10
Linux 5.13.0-27-lowlatency
KDE Frameworks 5.89.0
Qt 5.15.2
Comment 1 Maik Qualmann 2022-01-23 07:31:14 UTC 
Git commit caf0fd17db7be3f8d3003a86630f87289b1cfc42 by Maik Qualmann.
Committed on 23/01/2022 at 07:30.
Pushed by mqualmann into branch 'master'.

restore code for random effect in presentations tool
FIXED-IN: 7.6.0

M  +1    -1    NEWS
M  +4    -2    core/dplugins/generic/view/presentation/widgets/presentationwidget.cpp

https://invent.kde.org/graphics/digikam/commit/caf0fd17db7be3f8d3003a86630f87289b1cfc42