Presentation tool work as expected here, with 7.0.0 beta3

Do you use OpenGL effects ?

Gilles Caulier

The same here the images are random. It doesn't matter whether OpenGL or Ken Burns or Normal, the images are played shuffled. You specified MacOS and Ubuntu, should the problem occur with both versions?

Maik

Any feedback? Random play definitely works. Otherwise I close the bug for digiKam-7.0.0-Beta3.

Maik

yes, for me too, it work as expected...

Gilles Caulier

I had to investigate a little to narrow down the cause.

Background: I use multiple configuration files so I can manage different sets of photos. I then use "digikam --config $PWD/library.conf" to open the Photo set I want.

To create a new config file, I use "touch library.conf" and then "digikam $PWD/library.conf" because digiKam won't work if the config does not exist. Next I go through the initial setup.

So far so good, everything seems to work perfect except shuffling presentations. I just found out that if I create a config file in that way, it won't have a "[Presentation Settings]" section. For some reason it just won't be created, even after starting a presentation. And without that section the presentation Shuffle won't work.

To work around, I copied the "[Presentation Settings]" section from ~/.digikamrc into my "library2.conf" and then it seems to work. (great!)

But there is something else strange. If I remove the "[Presentation Settings]" from ~/.digikamrc, and then start digikam with "digikam --config $HOME/.config/digikamrc", I get exactly the same problem as above (no [Presentation Settings]). Then if I exit digiKam and start it without using the "--config" parameter, then shuffle works fine and "[Presentation Settings]" is created automatically.

So it looks like something is wrong with the --config parameter. At least I have a work-around now, so I can fix my config files manually and shuffle.





Here are details:

Versions
* Tested on Ubuntu 18.04 digiKam 5.6.0
* Same on macOS digiKam 6.4.0


Steps to reproduce

(method 1):

cd tmp
touch library.conf
digikam --config $PWD/library.conf
# Go through initial setup
# Settings, Configure digiKam. Collections. Add network share.
# Select all photos.
# View, presentation. Shuffle images. Start presentation.
# Won't be shuffled
# exit digiKam
# "[Presentation Settings]" won't be created

(method 2)

vi ~/.config/digikamrc
# remove "[Presentation Settings]"  section
digikam --config $HOME/.config/digikamrc
# shuffle presentation =-> it won't be shuffled
# exit digiKam
# "[Presentation Settings]" won't be created
# Launch digikam again without --config
digikam
# shuffle presentation =-> it works!!
# exit digiKam
# "[Presentation Settings]" was been created.

One last addition. After using the above work-around, I can conclude that when using the "--config" parameter, the [Presentation Settings] won't be created, nor updated. 

In other words:

digikam --config $HOME/digikamrc

# Change settings in Presentation dialog
# Restart digikam
# Changed settings were not saved

# start without --config
digikam
# do the same
# Changed settings were saved

After a short test here it doesn't matter whether I start with a new configuration via "config" parameter or delete the [Presentation Settings] section. Of course, when I have opened the presentation tool, I first have to activate the CheckBox for shuffle.
In addition, the [Presentation Settings] section is always re-created after exiting the tool.

Maik

I can reproduce something, maybe it's because of the use of the "$HOME" variable, more tonight.

Maik

Git commit 9c4a2605c89b4fbf0b84fc2225c7cafb71631789 by Maik Qualmann.
Committed on 12/04/2020 at 14:34.
Pushed by mqualmann into branch 'master'.

fix use of KConfig instead of KSharedConfig #1
FIXED-IN: 7.0.0

M  +8    -8    core/dplugins/generic/view/presentation/dialogs/presentationdlg.cpp

https://invent.kde.org/kde/digikam/commit/9c4a2605c89b4fbf0b84fc2225c7cafb71631789