[Bf-funboard] clarifying view-split-resize vs view-header-collapse...

[David Jeske]

One thing that is a semi-constant confusion for me as a casual blender user
is the ambiguity between grabbing the view-split-resize edge, and the
view-header-collapse edge.

I think this happens because...

- They both have the same divider-axis-drag mouse-cursor.
- They are both on the edge of the same split
- The header can be at the top or the bottom of the panel
- The view-header-collapse drag doesn't "do anything" until I drag far
enough to collapse the header, so it takes several seconds until I see
feedback that it's the wrong handle

Here are some ideas I've been considering to clarify and/or improve this
behavior:

- Use a different mouse-cursor for the view-header-collapse-edge .. It can
only be collapsed one way, so it really doesn't need the "double direction"
divider drag. Simply showing the single-direction divider drag cursor would
be a big and easy improvement.

- allow middle-button drag on the header to move the view-split... the
whole header is a much bigger hit-target than the bottom edge, and
middle-drag already scrolls panels and headers. One downside is that you
might drift the split while trying to scroll a header to reach hidden
items. I don't think this would be a big issue but we'd have to "experience
it" to see.

- remove the header-drag-to-collapse, and instead put that functionality in
the right-click menu. In this case, dragging either edge of the header
would move the view split...

Thoughts?