Hello, Wondering if anyone can help us with the following question. In VirtualBox we need for various reasons to know what the usable area of each screen is - that translates as the largest rectangle which fits on that screen without obscuring any panels or similar. We find that out by mapping a maximised window on each screen at start-up and checking its position and dimensions. To prevent disturbance to the user we create the window fully translucent, or if the X server does not support that we use XShape and leave only a single pixel visible. On GNOME Shell Wayland edition (what is the right way to say that?) this unfortunately flashes a black rectangle up on the screen in the area which should be translucent. I assume this is Xwayland-related, but is there any way to prevent it?
For a bit of background, creating a maximised window as we do was the best way we found of getting the information we need. Qt does not provide it directly, _NET_WORKAREA is not quite the right thing either and not all window managers provide usable strut information as some of them composite panels directly rather than creating windows for them. We use the area found for a number of things, in particular: adjusting the size and position of windows restored from previous sessions if the old positions no longer fit the current layout (especially to prevent windows appearing off-screen) and correctly placing the toolbar windows which we use in seamless mode, which we want to span the bottom (usually) of a given screen, but above any window manager toolbars or panels. Of course, the problem is finding something which works, if not in all window managers, at least for as many popular ones as possible. Thanks! Regards Michael -- Michael Thayer | VirtualBox engineer ORACLE Deutschland B.V. & Co. KG | Werkstr. 24 | D-71384 Weinstadt ORACLE Deutschland B.V. & Co. KG Hauptverwaltung: Riesstraße 25, D-80992 München Registergericht: Amtsgericht München, HRA 95603 Komplementärin: ORACLE Deutschland Verwaltung B.V. Hertogswetering 163/167, 3543 AS Utrecht, Niederlande Handelsregister der Handelskammer Midden-Nederland, Nr. 30143697 Geschäftsführer: Alexander van der Ven, Jan Schultheiss, Val Maher _______________________________________________ gnome-shell-list mailing list gnome-shell-list@gnome.org https://mail.gnome.org/mailman/listinfo/gnome-shell-list
