Created attachment 144447 [details]
compare gtk and qt slider width
Recently breeze theme (for qt/kde) has increased the width of scroll bar slider. It's easier to locate the mouse pointer to it.
Breeze GTK theme should change to match it.
STEPS TO REPRODUCE
1. Use Breeze GTK theme and KDE theme.
2. Open a GTK app with scroll bar, such as gucharmap (Character Map).
3. Open a KDE app with scroll bar, such as dolphin.
The scroll bar slider on GTK is narrower than the one on KDE/Qt. See attached screenshot.
The scroll bar slider on GTK should be of the same width as the one on KDE/Qt.
Operating System: Arch Linux
KDE Plasma Version: 5.23.4
KDE Frameworks Version: 5.88.0
Qt Version: 5.15.2
Yeah, it's still using the old appearance.
https://invent.kde.org/plasma/breeze-gtk/-/merge_requests/39 is updating the scrollbars to the new appearance, which will fix this bug.
Git commit 1c4d3d1c564405977ba1c1b14399a829e0363ae4 by Nate Graham, on behalf of Artem Grinev.
Committed on 16/03/2022 at 18:40.
Pushed by ngraham into branch 'master'.
gtk3, gtk4: implement blue ocean scrollbars
This implements Blue Ocean style for scrollbars. Also makes them look focused
on main content view focus.
Opacity levels were found based on QStyle element final colors as it seems
GTK handles alpha a bit differently.
Related: bug 443919
M +11 -2 src/gtk3/applications/_firefox.scss
M +103 -43 src/gtk3/widgets/_scrollbar.scss
M +107 -46 src/gtk4/widgets/_scrollbar.scss