Super bold window frame when using 175% global scaling

[adam900710]

When "Window decoration" theme is changed to any Materia theme, and with global scaling other than 100%, it will result super bold window frame, definitely way larger than the scaled result.

Default Oxygen has no such problem.

[varlesh]

Try set without borders on Window border size

[adam900710]

No border is too aggressive then.

The problem is, this only happens in materia-kde theme.
Not only the default oxygen, but other themes like arc-kde has no such problem at all.

Thus I guess it's something can be fixed in materia-kde.

[varlesh]

What you mean No border is too aggressive then.?

[varlesh]

you can show screenshot with no borders option?

[adam900710]

Oh, I thought you're recommending "no border" as a workaround.

And here is the screenshot of the no border result:

Surprisingly, not much different.

BTW, the problem only happens for fractional global scale.
When scaled to 200%, the problem seems gone.

[varlesh]

Your issue specific... but you can play with borders size...
Open Materia-Darkrc and replace Layout section:

[Layout]
BorderBottom=0
BorderLeft=0
BorderRight=0
ButtonHeight=24
ButtonMarginTop=0
ButtonSpacing=6
ButtonWidth=24
ExplicitButtonSpacer=0
PaddingBottom=58
PaddingLeft=26
PaddingRight=26
PaddingTop=10
TitleBorderLeft=4
TitleBorderRight=4
TitleEdgeBottom=4
TitleEdgeBottomMaximized=4
TitleEdgeLeft=8
TitleEdgeLeftMaximized=4
TitleEdgeRight=8
TitleEdgeRightMaximized=4
TitleEdgeTop=4
TitleEdgeTopMaximized=4
TitleHeight=12

restart kwin:
killall kwin_x11
ALT+F2 > kwin_x11

[adam900710]

My issue is already explained in the subject, the border of materia-kde theme is unnormally large!

Just try set your kde global scale to 175%/125% and try it.

Here is a side by side comparison, the left is Materia-light window decoration, while the right is Arc-light:
(I choose light to provide more contrast)

No matter what the border size I choose, the materia-kde one is still that huge.
Even when I selected "no border", the border is still way larger than default border size of Arc-light.

And I have already said, if the global scale is changed from 175% to 200%, the border problem is gone.

So, this is definitely something wrong inside materia-kde theme for its window decoration.

[varlesh]

please read my previous comment

[adam900710]

I know you can modify the rc (even without the need to restart kwin, just switch to another window decoration theme, and back to materia-*).

But then it doesn't explain why the problem only happens under fractional scale (175% has the problem, 200% gone).

[varlesh]

how rendered 150% for you?

[adam900710]

Not any better:

Can only get normal result from 100% and 200% scale.

[varlesh]

I cannot figure out how it works. In any case, there is one pixel left around the border of the windows.

[varlesh]

And it will be difficult to describe as a KWin bug.

[varlesh]

See, PaddingLeft, PaddingRight and PaddingBottom - it's shadows.
On Materia Dark it's 30px, 30px and 62px... It's now present on rc-file...and woked fine, but not on scale 125%-175%.
If i'm change PaddingLeft, PaddingRight and PaddingBottom to 28px, 28px and 60px and BorderBottom, BorderLeft and BorderRight to 1px - i'm have offset issue:

After this i'm set:
PaddingLeft, PaddingRight and PaddingBottom to 29px, 29px and 61px with 1px border size i'm have this:

Ok, set border size to 0px with previous config and now we have....... 1px border:

UPD: Need reloging on system

[varlesh]

@davidedmundson @aleixpol you should take a look at this