If we go desktop settings and change wallpapper by setting unsupported image format than we will see default imag ethumbnail on the list and if we select and apply it, we have only black background on desktop without image set. Please check attached file. You can easily reproduce it by for example picking .xcf file and setting it as a wallpaper.
Created attachment 88022 [details] Thumbnail for unsupported image formats
Yes this is expected, it shows image thumbnail when it can not generate thumbnail, what is unusual that you think should be changed?
Hi, thank you for your answer. In case we have invalid image format selected, shouldn't we be informed about it with some message and just don't create this default thumbnail (if image format is not supported/allowed just don't add anything and inform user about it)? How can i remove this default thumbnails from the preview grid ?
At the very very very least it should show the file path as a tooltip, otherwise you don't even know where the stuff comes from. That's probably a general thing with wallpapers outside a wallpaper package though I guess.
I did a fresh installation of Plasma 5 and Kubuntu 14.10. If i now open dekstop settings i see 3 "unknown" wallpapers (default thumbs), so thers something wrong with it :)
That sounds more like a missiong kio-extras dependency which would be a packaging issue.
does this still happen?
Created attachment 89158 [details] screenshot of problem in master yes, still happens I really think there simply should be a tooltip telling what the file path is and maybe if at all possible an error from kio. Would at least help me loads already :P
I can also confirm this problem.
Git commit 9081355a4c1f58602078144fbb6b6bb54e8e51d7 by David Edmundson. Committed on 22/10/2014 at 22:02. Pushed by davidedmundson into branch 'master'. Only list image types that we can actually open in wallpaper selection dialog Use QImageReader::supportedMimeTypes() to list appropriate types FIXED-IN: 5.2 M +12 -1 wallpapers/image/image.cpp http://commits.kde.org/plasma-workspace/9081355a4c1f58602078144fbb6b6bb54e8e51d7