Discussion:
[kinfocenter] [Bug 388633] New: Distribution logo looks pixelated when I change display scale
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Dr. Chapatin
2018-01-06 22:14:20 UTC
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https://bugs.kde.org/show_bug.cgi?id=388633

Bug ID: 388633
Summary: Distribution logo looks pixelated when I change
display scale
Product: kinfocenter
Version: 5.11.5
Platform: Archlinux Packages
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: Info
Assignee: ***@gmail.com
Reporter: ***@gmx.com
Target Milestone: ---

Reported in Arch Linux tracker
https://bugs.archlinux.org/task/56971

But the problem is kinfocenter itself.
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Nate Graham
2018-01-06 23:35:23 UTC
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https://bugs.kde.org/show_bug.cgi?id=388633

Nate Graham <***@zoho.com> changed:

What |Removed |Added
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CC| |***@zoho.com

--- Comment #1 from Nate Graham <***@zoho.com> ---
Created attachment 109714
--> https://bugs.kde.org/attachment.cgi?id=109714&action=edit
Logo with rendering artifacts in HiDPI mode
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Nate Graham
2018-01-06 23:35:55 UTC
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Nate Graham <***@zoho.com> changed:

What |Removed |Added
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Status|UNCONFIRMED |CONFIRMED
Ever confirmed|0 |1

--- Comment #2 from Nate Graham <***@zoho.com> ---
Looks like the same thing we see in Discover:
https://bugs.kde.org/show_bug.cgi?id=388253
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Nate Graham
2018-01-06 23:36:03 UTC
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https://bugs.kde.org/show_bug.cgi?id=388633

Nate Graham <***@zoho.com> changed:

What |Removed |Added
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See Also| |https://bugs.kde.org/show_b
| |ug.cgi?id=388253
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Nate Graham
2018-02-06 23:28:24 UTC
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https://bugs.kde.org/show_bug.cgi?id=388633

Nate Graham <***@zoho.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |DOWNSTREAM
Status|CONFIRMED |RESOLVED

--- Comment #3 from Nate Graham <***@zoho.com> ---
Turns out this is just what it looks when Qt tries to scale up a too-small
image. Talk to the Arch folks and ask them to provide a larger image!
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Dr. Chapatin
2018-02-06 23:36:40 UTC
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https://bugs.kde.org/show_bug.cgi?id=388633

--- Comment #4 from Dr. Chapatin <***@gmx.com> ---
from my report in Arch tracker
"Not a packaging issue, we provide a SVG logo and the same happens with the
Plasma logo if you remove ours."
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Christoph Feck
2018-02-07 00:09:09 UTC
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--- Comment #5 from Christoph Feck <***@kde.org> ---
Maybe KInfoCenter needs to set AA_EnableHighDpiScaling?
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Nate Graham
2018-02-07 01:55:41 UTC
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Nate Graham <***@zoho.com> changed:

What |Removed |Added
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Status|RESOLVED |REOPENED
Resolution|DOWNSTREAM |---

--- Comment #6 from Nate Graham <***@zoho.com> ---
Mm, could be.
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Nate Graham
2018-02-07 05:20:13 UTC
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Nate Graham <***@zoho.com> changed:

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Status|REOPENED |CONFIRMED

--- Comment #7 from Nate Graham <***@zoho.com> ---
Thanks for the clue, Christoph. That was part of it! The pixmap itself also had
to be adjusted for the screen DPI. Here's a patch:
https://phabricator.kde.org/D10357

Thanks for your persistence on this, Dr. Chapatin.

Also, you might ask the Arch folks to provide a more square logo for
KInfoCenter so the window doesn't have to be a zillion pixels wide to
accommodate it!
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Nate Graham
2018-02-07 14:08:53 UTC
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https://bugs.kde.org/show_bug.cgi?id=388633

Nate Graham <***@zoho.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|CONFIRMED |RESOLVED
Latest Commit| |https://commits.kde.org/kin
| |focenter/82e64226c2e628aab2
| |afdcefdadf0246a59f1b71
Resolution|--- |FIXED

--- Comment #8 from Nate Graham <***@zoho.com> ---
Git commit 82e64226c2e628aab2afdcefdadf0246a59f1b71 by Nathaniel Graham.
Committed on 07/02/2018 at 14:08.
Pushed by ngraham into branch 'Plasma/5.12'.

Show high-resolution and vector logos properly in HighDPI mode

Summary:

Take the device pixel ratio into consideration when rendering the logo, so it
looks nice in HighDPI mode.

Test Plan:
Tested in NDE Neon with the standard Plasma logo, which is an SVG.

Before:

After:

Reviewers: #plasma

Subscribers: cfeck, plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D10357

M +1 -0 main.cpp

https://commits.kde.org/kinfocenter/82e64226c2e628aab2afdcefdadf0246a59f1b71
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Nate Graham
2018-02-07 14:09:31 UTC
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https://bugs.kde.org/show_bug.cgi?id=388633

Nate Graham <***@zoho.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
Latest Commit|https://commits.kde.org/kin |https://commits.kde.org/kin
|focenter/82e64226c2e628aab2 |focenter/fdd2fc881157c21fd8
|afdcefdadf0246a59f1b71 |a7eb3b8b5b0867b3f24c4e

--- Comment #9 from Nate Graham <***@zoho.com> ---
Git commit fdd2fc881157c21fd8a7eb3b8b5b0867b3f24c4e by Nathaniel Graham.
Committed on 07/02/2018 at 14:02.
Pushed by ngraham into branch 'master'.

Show high-resolution and vector logos properly in HighDPI mode

Summary:

Take the device pixel ratio into consideration when rendering the logo, so it
looks nice in HighDPI mode.

Test Plan:
Tested in NDE Neon with the standard Plasma logo, which is an SVG.

Before:

After:

Reviewers: #plasma

Subscribers: cfeck, plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D10357

M +1 -0 main.cpp

https://commits.kde.org/kinfocenter/fdd2fc881157c21fd8a7eb3b8b5b0867b3f24c4e
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Nate Graham
2018-02-22 15:59:05 UTC
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https://bugs.kde.org/show_bug.cgi?id=388633

Nate Graham <***@kde.org> changed:

What |Removed |Added
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See Also| |https://bugs.kde.org/show_b
| |ug.cgi?id=390903
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Dr. Chapatin
2018-03-10 20:11:09 UTC
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https://bugs.kde.org/show_bug.cgi?id=388633

--- Comment #10 from Dr. Chapatin <***@gmx.com> ---
Created attachment 111300
--> https://bugs.kde.org/attachment.cgi?id=111300&action=edit
Arch logo pixelated in kinfocenter 5.12.3

Phabricator link says "FIXED-IN 5.12.1".
However Arch logo is still pixelated in kinfocenter 5.12.3.
See screenshot.
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Nate Graham
2018-03-10 21:49:04 UTC
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--- Comment #11 from Nate Graham <***@kde.org> ---
`grep LogoPath /etc/xdg/kcm-about-distrorc` should print out a path. Can you
open up the image at that path and verify that it's actually a scalable SVG
image or a HiDPI raster image?
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Dr. Chapatin
2018-03-11 02:55:03 UTC
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--- Comment #12 from Dr. Chapatin <***@gmx.com> ---
Created attachment 111311
--> https://bugs.kde.org/attachment.cgi?id=111311&action=edit
Arch logo shown by PhotoQt viewer
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Antonio Rojas
2018-03-11 10:16:32 UTC
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https://bugs.kde.org/show_bug.cgi?id=388633

Antonio Rojas <***@archlinux.org> changed:

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CC| |***@archlinux.org

--- Comment #13 from Antonio Rojas <***@archlinux.org> ---
(In reply to Dr. Chapatin from comment #10)
Created attachment 111300 [details]
Arch logo pixelated in kinfocenter 5.12.3
Phabricator link says "FIXED-IN 5.12.1".
However Arch logo is still pixelated in kinfocenter 5.12.3.
See screenshot.
Looks alright here. Tried deleting the cache?
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Dr. Chapatin
2018-03-11 13:31:04 UTC
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--- Comment #14 from Dr. Chapatin <***@gmx.com> ---
Hi Antonio
How can I delete the cache?
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Antonio Rojas
2018-03-13 07:19:17 UTC
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--- Comment #15 from Antonio Rojas <***@archlinux.org> ---
(In reply to Dr. Chapatin from comment #14)
Post by Dr. Chapatin
Hi Antonio
How can I delete the cache?
rm -r ~/.cache/kinfocenter/qmlcache/
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Dr. Chapatin
2018-03-13 15:28:13 UTC
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--- Comment #16 from Dr. Chapatin <***@gmx.com> ---
(In reply to Antonio Rojas from comment #15)
Post by Antonio Rojas
(In reply to Dr. Chapatin from comment #14)
Post by Dr. Chapatin
Hi Antonio
How can I delete the cache?
rm -r ~/.cache/kinfocenter/qmlcache/
Thanks.
However ~/.cache/kinfocenter/qmlcache/ is not available on my system.
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Simon Andric
2018-04-05 08:48:24 UTC
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Simon Andric <***@gmail.com> changed:

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