Bug 396961 - Empty space on interface on thumbnail view
Summary: Empty space on interface on thumbnail view
Status: RESOLVED FIXED
Alias: None
Product: digikam
Classification: Applications
Component: Bundle-AppImage (show other bugs)
Version: 6.0.0
Platform: Appimage Linux
: NOR normal
Target Milestone: ---
Assignee: Digikam Developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-07-29 16:04 UTC by MarcP
Modified: 2018-10-31 02:40 UTC (History)
7 users (show)

See Also:
Latest Commit:
Version Fixed In: 6.0.0


Attachments
Empty space on center top. (295.58 KB, image/png)
2018-07-29 16:04 UTC, MarcP
Details

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Description MarcP 2018-07-29 16:04:04 UTC
Created attachment 114194 [details]
Empty space on center top.

I noticed in the last update that there's an empty space on the top center of the screen when viewing pictures in thumbnail view. It is the same size as picture "strip" in preview mode. See the screenshot.

I am using the last snapshot of the 6.0 version of digikam (digikam-6.0.0-git-20180727T191451-x86-64.appimage) on ubuntu 16.10.
Comment 1 Maik Qualmann 2018-07-29 16:48:00 UTC
The problem was discussed here: Bug 396086. The bug report is actually about something different, look at the last comedies.

Maik
Comment 2 Maik Qualmann 2018-07-29 16:50:13 UTC
comedies -> comments ((:-))

Maik
Comment 3 Maik Qualmann 2018-08-13 04:44:47 UTC
*** Bug 397405 has been marked as a duplicate of this bug. ***
Comment 4 caulier.gilles 2018-08-24 11:08:16 UTC
There are few changes in AppImage which can introduce this dysfunction :

1/ Qt 5.9.3 => Qt5.9.6. I'm not sure if this really the source of this problem.

I can upgrate to Qt 5.11.1 to see if the result is better, but this can take a while to configure and compile.

2/ KF5 5.41 => KF5 5.45. I feel this change can have side-effects with KXMLGUI framework from KDE. I currently finalize to upgrade to last KF5 5.49 to see if problem is fixed. This way is more easy to installing Qt 5.11.1

3/ As i can reproduce this dysfunction under Mageia6 while running the 6.0.0 beta AppImage, i tried to found a quick fix. Magically, deleting the digikam rc file and restarting digiKam has fixed the problem. Of course, you will lost all the GUI settings, but at least the dysfunction go out.

The ~/.config/digikamrc file is generated by KXMKGUI framework... do you feel the bug ?

Gilles Caulier
Comment 5 paravano.marco 2018-08-24 14:55:41 UTC
I tested the solution of deleting the digikamrc file and then restart digiKam and I can say that it works.
KDE Neon user edition 5.13.4 (still 16.04 LTS).
Thanks Gilles!
Comment 6 paravano.marco 2018-08-24 15:19:08 UTC
(In reply to paravano.marco from comment #5)
> I tested the solution of deleting the digikamrc file and then restart
> digiKam and I can say that it works.
> KDE Neon user edition 5.13.4 (still 16.04 LTS).
> Thanks Gilles!

But it is not persistent: closing and starting up again digikam the empty space reappears....
Comment 7 caulier.gilles 2018-08-24 15:36:50 UTC
Interresting because for me it do not re appear...

But at lest, we know that th problem is located in session backup of GUI, probably a size of the thumbnails view

If you move the thumb bar on the right or left side of icon view and restarting digikam, it still reproducible ?
Comment 8 paravano.marco 2018-08-24 15:46:41 UTC
(In reply to caulier.gilles from comment #7)
> Interresting because for me it do not re appear...
> 
> But at lest, we know that th problem is located in session backup of GUI,
> probably a size of the thumbnails view
> 
> If you move the thumb bar on the right or left side of icon view and
> restarting digikam, it still reproducible ?

Sorry Sir but I don't understand "move the thumb bar on the right or left side of icon view". I don't know how to do this. Can you explain to me it more clear?
Comment 9 paravano.marco 2018-08-24 15:50:36 UTC
(In reply to paravano.marco from comment #8)
> (In reply to caulier.gilles from comment #7)
> > Interresting because for me it do not re appear...
> > 
> > But at lest, we know that th problem is located in session backup of GUI,
> > probably a size of the thumbnails view
> > 
> > If you move the thumb bar on the right or left side of icon view and
> > restarting digikam, it still reproducible ?
> 
> I've moved the thumb bar beside the thumbnails view and closed digikam. At restart it works fine (no empty space).
Comment 10 caulier.gilles 2018-08-24 17:21:03 UTC
ok. And now replace the thumbbar on the top. Restart digiKam and look the result...

Gilles Caulier
Comment 11 caulier.gilles 2018-08-24 17:29:06 UTC
in digikamrc file, we can see 2 lines from MainWindow section:

SplitterState=...blabla1...
ThumbbarState=...blabla2...

These lines are used to encode position en size of thumbbar and the separator between thumbbar and icon-view.

Probably the algorithm used to serialize/deserialize these data is affected by a change in KF5 or Qt5.

Gilles Caulier
Comment 12 paravano.marco 2018-08-24 17:32:02 UTC
(In reply to caulier.gilles from comment #10)
> ok. And now replace the thumbbar on the top. Restart digiKam and look the
> result...
> 
> Gilles Caulier

Everything gone ok. I think the empty space was due to the fact that digikam thumbnail dock is not automatically displayed. At the start in fact the thumbnail is not displayed and this is the reason that there is the empty space. Just right click on the empty space and flag on the thumbnail dock: the empty space is replaced by the thumbnail dock.
Comment 13 caulier.gilles 2018-08-24 20:56:32 UTC
There is a big chance that this bug have been introduced by this one :

https://bugs.kde.org/show_bug.cgi?id=395988

Fixed in last KF5 5.49

Gilles Caulier
Comment 14 Maik Qualmann 2018-09-30 11:25:20 UTC
*** Bug 399237 has been marked as a duplicate of this bug. ***
Comment 15 Milan Knížek 2018-09-30 15:46:55 UTC
digikam-6.0.0-beta1-20180926T221226-x86-64.appimage

Removing digikamrc helped only temporarily - the issue with a blank area in Thumbnail view reappeared again after a few starts of digikam (not sure what was the trigger).

Playing with thumbnail dock location (displaying via righ-click and dragging by mouse to left) did not help either - in one case I even had the thumbnails bar on the left and an empty space on top.
Comment 16 MarcP 2018-10-02 18:26:08 UTC
Can confirm that removing the SplitterState and ThumbbarState lines from the ~/.config/digikamrc file temporally solves the issue, but that empty space reappears after a couple of restarts.
Comment 18 caulier.gilles 2018-10-30 06:45:41 UTC
The new test AppImage bundle 6.0.0-beta2 64 bits is just uploaded at 

https://files.kde.org/digikam/

Internal update : new Qt 5.9.7 and KF5 5.51.

Problem still reproducible ?

Gilles Caulier
Comment 19 Milan Knížek 2018-10-30 17:21:55 UTC
Seems okay for me.
Comment 20 MarcP 2018-10-30 19:27:20 UTC
Tried in my Ubuntu 18.04 laptop and that empty space is not there now. Seems to work for me at least.
Comment 21 caulier.gilles 2018-10-31 02:40:19 UTC
Perfect. Thanks fo the feedback. I suspect that dysfunction was introduced in KF5::KXMLGui API with previous 5.49 update.