(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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Ubuntu.
https://bugs.launchpad.net/bugs/1545118
Title:
can't easily grab scrollbar with mouse if dual column
Status in Canonical System Image:
New
Status in Ubuntu UX:
Fix Committed
Status in ubuntu-ui-toolkit package in Ubuntu:
New
Bug description:
If you have an app that uses AdaptivePageLayout and supports 2
columns, if there is a scrollbar in the first column, it's very
difficult to grab it with your mouse because when you get close to it,
you get the horizontal arrows showing to allow resizing of the panels
in the multi-column layout.
You can try this with messaging-app in silo 30 (soon to land)
To manage notifications about this bug go to:
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1545118/+subscriptions
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