[Bug 275687] New: Artifacts when scrolling in album GUI

https://bugs.kde.org/show_bug.cgi?id=275687

           Summary: Artifacts when scrolling in album GUI
           Product: digikam
           Version: 1.9.0
          Platform: Fedora RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Preview
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Created an attachment (id=61006)
 --> (http://bugs.kde.org/attachment.cgi?id=61006)
buggy view

Version:           1.9.0 (using KDE 4.6.3)
OS:                Linux

See attached screenshot : When I am in Album GUI, browsing my photos, and
whenever I scroll **while the mouse is over one of the photos**, the blue
rectangle that surround the pictures appears somewhat everywhere.
If the mouse cursor is not over one of the photos (for example, if it is over
the scroll bar itself), everything is fine.
The only way to get a clear view again is to scroll enough to make the buggy
part disappear, then go back to that part (with the cursor outside the area of
course).

Reproducible: Always

Steps to Reproduce:
As said before : mouse over one of the photo, scroll.



I'm running Fedora 15, with Gnome 3 (gnome-shell enabled).
lspci :
01:00.0 VGA compatible controller: nVidia Corporation G84 [GeForce 9500M GS]
(rev a1)
I'm using the nouveau driver.
I didn't tried with the binary nvidia driver, tell me if it is needed (although
I would prefer not to install it...)

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]
          Component|Preview                     |Albums GUI




--- Comment #1 from Gilles Caulier <caulier gilles gmail com>  2011-06-15 08:42:57 ---
I never see this dysfunction before. Sound like a problem with your video
driver.

Gilles Caulier

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Frederic Grelot <[hidden email]> changed:

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                 CC|                            |[hidden email]




--- Comment #2 from Frederic Grelot <fredericg_99 yahoo fr>  2011-06-15 09:48:41 ---
Well, I quite agree with you and I think this has something to see with the
video driver (which is why I posted this information).
However, it is really the only place I have seen this on my PC, it does never
NOT happen in digikam, and it does never happen anywhere else...
Still, I am not using that many KDE applications, since I'm under
Gnome3/Gnome-shell, maybe you have an idea of an other application I could
test, which would use the same kind of component as digikam? That way, I could
fill an other bug, either for nouveau, KDE, or QT...

Thanks for everything else anyway, and I hope this will help!

Frederic.

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--- Comment #3 from Frederic Grelot <fredericg_99 yahoo fr>  2011-06-15 20:48:27 ---
Still, it has to do with the way this component is used in Album GUI: there is
no problem in the window where I can import pictures from an SD card (whereas
there are thumbnails), nor in the left navigation bar of the editor...

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--- Comment #4 from Frederic Grelot <fredericg_99 yahoo fr>  2011-07-25 21:48:08 ---
I understand it has not been worked out if I'm the only one to see it, but I
can say that the bug is still there for me with 2.0.0-rc.
What is strange is that there is no problem with the editor's thumbbar, or the
scrolling view when importing pictures.
It happens only with the album view, either like in the attachement of the
first message, or even with the preview panel open : in this case, I have to
move my mouse over the pictures of the scrolling bar (with the thumbnails, on
top) to get them right...

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[pochini]

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--- Comment #5 from  <pochini shiny it>  2011-10-22 22:07:59 ---
Exactly the same problem here.
I believe this is a quite old bug. Before my update to kdelibs-4.6.5 (I used
4.3.x IIRC) the bug was present, but it was much less annoying because its only
effect was to not delete the frame around a thumbnail after the mouse pointer
moved away. As Fredefic wrote, it happened (and happens) in the album window
only.
I have a powermac dual-G4 with ATI card.

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--- Comment #6 from Gilles Caulier <caulier gilles gmail com>  2011-12-14 09:27:20 ---
Frederic,

I never reproduce this problem here.

It still valid using digiKam 2.x serie ?

Gilles Caulier

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Frederic Grelot <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEEDSINFO
         Resolution|                            |WORKSFORME




--- Comment #7 from Frederic Grelot <fredericg_99 yahoo fr>  2011-12-14 10:36:24 ---
Unfortunately (for digikam, not for me...), I changed my computer inbetween : I
trashed my Nvidia card for an AMD, and I haven't seen the problem since.
I highly suspect this is related to the card and/or driver, so I can't say for
sure the bug can be closed (I saw it with the first 2.x versions, before
changing computer).
Maybe driver updates that happened since then have fixed it...

I change it to NEEDSINFO/WORKSFORME, so that if anybody else sees it, he can
see it here (in particular pochini in comment #5).

Frederic.

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--- Comment #8 from  <pochini shiny it>  2011-12-14 21:09:03 ---
I have an ATI card and the problem still exists in 2.4.1. It has something to
do with the frame around the thumbnails. If I keep the mouse pointer on the
space between them it scrolls without corrupting the screen.
Since I'm the only known earthling who still have this problem I guess I have
to debug this myself. Can someone tell me where is the code which manages that
part of the GUI ?

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDSINFO                   |UNCONFIRMED
         Resolution|WORKSFORME                  |




--- Comment #9 from Gilles Caulier <caulier gilles gmail com>  2011-12-14 22:21:30 ---
This method is called to draw thumbnail iconview with border frame :

https://projects.kde.org/projects/extragear/graphics/digikam/repository/revisions/master/entry/libs/widgets/itemview/ditemdelegate.cpp#L83

Frame is draw by this method :

https://projects.kde.org/projects/extragear/graphics/digikam/repository/revisions/master/entry/libs/widgets/q3support/thumbbar.cpp#L661

Gilles Caulier

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--- Comment #10 from Mark Pearson <mark pearson0 gmail com>  2012-01-06 03:17:21 ---
I have exactly the same problem with digiKam version 2.3.0 and KDE 4.6.5

I have noticed that any scrolling activity (using the mousewheel or scrollbar)
while the mouse pointer is over the actual content (client) area of the album
thumbnails widget causes GUI artefacts.

Conversely, there are NO artefacts when scrolling with the mouse pointer
outside of the content area - e.g. using the mousewheel while the pointer is
over the scrollbar or grabbing the scrollbar and moving the mouse pointer up
and down while it is outside of the widget altogether.

I am running Digikam on a Macbook Pro with an ATI Mobility Radeon X1600.

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|1.9.0                       |2.3.0




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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Version Fixed In|                            |2.5.0

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |WAITINGFORINFO

--- Comment #11 from Gilles Caulier <[hidden email]> ---
Mark,

It still reproducible with digiKam 3.5.0 ?

Gilles Caulier

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--- Comment #12 from Mark Pearson <[hidden email]> ---
I am currently using Digikam 3.1.0 on KDE 4.10.5 on a Dell XPS 15z which has an
NVIDIA video card, so my hardware platform, KDE version and Digikam version
have changed since commenting on this bug last time. However, I have not seen
this bug for quite some time.

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|WAITINGFORINFO              |FIXED

--- Comment #13 from Gilles Caulier <[hidden email]> ---
Ok, thanks for the feedback...

Gilles Caulier

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Version Fixed In|2.5.0                       |4.0.0

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--- Comment #14 from [hidden email] ---
I haven't the powermac anymore. With my new pc the bug does not half-draw a
couple of rows of thumbnails (as in Frederic's screenshot), but it causes the
frame around them to stay after the page has been scrolled, as I wrote in
comment #5. I tried to figure out what happens without success. Perhaps I'll
try again.

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