On Thu, Oct 17, 2019 at 11:23:58AM -0400 I heard the voice of
Stefan Monnier, and lo! it spake thus:
>
> AFAICT, that doesn't explain why this is needed for Firefox's
> popups.
It's because the form autofill popups[0] are separate windows
positioned by FF on top of it. That is, they're not _children_ of the
main FF window; they're separate root-level X windows. That's
necessary in the context menu's case, because it may need (well, want)
to extend outside the main FF window, for instance.
Now, I think in the abstract, the toolkit could use
XTranslateCoordinates() to figure out where to position [absolutely]
the new window, so that it's in the proper place relative to the
action it's trying to perform inside the window. So, in some strict
sense, maybe it's a FF (or probably GTK, maybe) laziness bug. But,
whatever...
[0] Also visible in some other cases, like the right-click context
menu; it _should_ come up with the top-left corner at the pointed,
but winds up with the mouse a titlebar-height down into it.
--
Matthew Fuller (MF4839) | [email protected]
Systems/Network Administrator | http://www.over-yonder.net/~fullermd/
On the Internet, nobody can hear you scream.
