mart added a comment.
So, FormLayout has api to align two or more of them with each other, which is the list property FormLayout.twinFormLayouts I wonder if there is a way to make the parent and child formlayouts visible ot each other to use such property. the parent is in plasma-desktop/desktoppackage/contents/configuration/ConfigurationContainmentAppearance.qml, loading the individual wallpapers config in the stackview at line 162. so, we could try something like: the wallpaper configs will expose a formLayout property. the main formLayout has something like twinFormLayouts: stack.item && stack.item.formLayout ? [stack.item.formLayout] : [] then the parent layout may be i guess injected at instantiation as a property of the wallpaper plugin, so the child formlayout can set twinformlayouts as well this is all untested, so is a bit of R&D project, but if you would like to give a try it may be finally the properfix(tm) REPOSITORY R120 Plasma Workspace REVISION DETAIL https://phabricator.kde.org/D19873 To: filipf, #plasma, ngraham Cc: davidre, mart, abetts, plasma-devel, jraleigh, GB_2, ragreen, Pitel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, sebas, apol
