https://bugs.kde.org/show_bug.cgi?id=492373
Bug ID: 492373
Summary: Desktop Bar overflows off-screen with large amount of
desktops
Classification: Plasma
Product: kwin
Version: 6.1.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: effects-overview
Assignee: kwin-bugs-n...@kde.org
Reporter: breakingsp...@gmail.com
Target Milestone: ---
SUMMARY
Since introduction in 5.24, the Overview screen's Desktop Bar will overflow
off-screen with extreme desktop counts. While this does not cause a crash or
error, it causes controls to draw off-screen.
With default DPI/no scaling, the horizontal (1 x n) Desktop Bar will overflow
at:
2560x1440 - 16 desktops
1920x1080 - 13 desktops
Similar overflows would occur on a left-edge Desktop Bar (when desktops are n x
1 layout), and in a non-linear state (2x2, 3x3, 4x4 grid). A 4x4 grid user with
16 desktops would be the most likely to encounter this issue in practice.
Screenshots from my Plasma desktop illustrate the issue at 4-9-16 desktop
count.
Similar screenshots from my Macbook demonstrate the same count.
MacOS's design mitigates overflow in order of appearance of the effects (vice
versa as desktops are removed):
-At 10 desktops: shrink previews + zoom/accordion on hover
-At 12 desktops: hide labels unless hovered
-At 16 desktops: prevent creating more desktops
Obviously KDE Plasma is not MacOS, we can find an elegant way to handle this
that doesn't just copy Apple.
I think that reading in the screen dimensions+DPI, then defining a ratio of
"desktop count : screen length" could be sufficient to trigger an overflow
state, where a solution like a scrollbar container could kick in, or scale the
previews down and up in that state.
I'll help where I can, but it's not a high priority for now.
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