(A) A scrollbar is immediately adjacent to a column splitter
is a special case of
(B) a scrollbar’s touch area overlaps with the touch area for anything else
which is a special case of
(C) the touch areas for any two things overlap.
In the long run we will need a solution for (C). But for now, here’s my
proposal for (B). <https://goo.gl/kKcynn> Unfortunately that document is
Canonical-only and what I’ve written is not yet approved. So for now, here’s
what I’ve written:
____________
As an exception to any standard control touch area clash behavior, if any part
of a scrollbar thumb’s touch area clashes with the touch area of one or more
other controls, then:
* If you press on that area, neither/no element should receive the press event
until one of the following happens.
* If you release without a substantial drag, the press and release should be
passed to the control(s) that aren’t the thumb.
* If you begin dragging (nearly) vertically, it should be treated as dragging
the thumb.
* If you begin dragging in any other direction, the press event and any future
events should be passed to the control(s) that aren’t the thumb.
____________
** Changed in: ubuntu-ux
Status: New => Fix Committed
** Changed in: ubuntu-ux
Assignee: (unassigned) => Matthew Paul Thomas (mpt)
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https://bugs.launchpad.net/bugs/1545118
Title:
can't easily grab scrollbar with mouse if dual column
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