sebas added a comment.
It would, and I played with it, but: This would need an ARGB window and also fallbacks to opaque components, at that point, we'd be duplicating much of the code in Plasma::Dialog (from plasmaquick). Since this code is hopefully going away for a yet-to-be-designed replacement mechanism, it isn't worth the hassle I'm not using the existing OSD since it doesn't allow us to place anything on a specific screen (kwin's job to decide), so it's pretty useless here. Extending that to allow what we need would mean going through KWindowSystem as well. I do think it's the proper solution in the end, and it would then also work on Wayland, but it's way too late for 5.8 now. This patch strikes I think a reasonable balance to make it a bit less ugly for 5.8 at least. REPOSITORY rKSCREEN KScreen REVISION DETAIL https://phabricator.kde.org/D2760 EMAIL PREFERENCES https://phabricator.kde.org/settings/panel/emailpreferences/ To: sebas, #plasma Cc: broulik, plasma-devel, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas