On Tue, Jun 16, 2015 at 08:02:52AM -0700, Jasper St. Pierre wrote: > I was not aware you could stack subsurfaces under a parent surface at > all. Is this intended protocol behavior? The fact that you might be > able to do that at all in Weston might be a bug.
From wl_subsurface.place_above: "... The reference surface must be one of the sibling surfaces, or the parent surface." place_below is semantically equivalent except the stacking order. To me this reads as it is explicitly allowed to stack a subsurface below a parent surface. Now how that should work if the parent surface stacks itself above some other surface is undefined I assume (whether the subsurface that is stacked below its parent surface should be below or above the surface the parent surface is stacked above, but I assume it subsurface tree should be considered tightly coupled and be stacked together, if we'd want to define that behaviour. Jonas > > On Tue, Jun 16, 2015 at 7:46 AM, Arnaud Vrac <raw...@gmail.com> wrote: > > Hi, > > > > I'm wondering if a behaviour of weston related to subsurfaces is either a > > bug or intended. The protocol description is not clear on what happens in > > the following cases: > > > > Suppose I have a shell surface (BLUE) and two subsurfaces (RED, GREEN). I > > want to stack them to I get RED, GREEN, BLUE from bottom to top. > > > > If I do: > > > > wl_subsurface_place_below(GREEN->subsurface, BLUE->surface); > > wl_subsurface_place_below(RED->subsurface, GREEN->surface); > > > > It works, but if I do: > > > > wl_subsurface_place_below(RED->subsurface, GREEN->surface); > > wl_subsurface_place_below(GREEN->subsurface, BLUE->surface); > > > > The order is GREEN, RED, BLUE instead. > > > > Logically the sibling relative order should be kept in the second case, but > > it's not. The protocol is not clear on what should happen, what is the > > expected result ? > > > > I have attached a small sample to test easily. > > > > -- > > Arnaud > > > > _______________________________________________ > > wayland-devel mailing list > > wayland-devel@lists.freedesktop.org > > http://lists.freedesktop.org/mailman/listinfo/wayland-devel > > > > > > -- > Jasper > _______________________________________________ > wayland-devel mailing list > wayland-devel@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/wayland-devel _______________________________________________ wayland-devel mailing list wayland-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/wayland-devel
