Another updated Fl_Tree patch against a clean r7680; mainly added "autoscroll"
for keynav + mouse drags:
http://seriss.com/people/erco/fltk/tmp/Fl_Tree-add-keyboard-nav-to-r7680-08-12-10--10pm.patch
I'm getting closer to 'check in' ready code (still holding back though for API
RFC on fltk.dev)
* Added *autoscroll* (keynav and mouse drags)
* Added *position()* method
* Added *display()* method
* Mods to allow global control of scrollbars with Fl::scrollbar_size()
* Modified unittests demo to include Fl_Tree for "scrollsize" tests
TODO:
o Need a callback system that is invoked when items are open/closed
o Need to allow keyboard nav to move focus to child FLTK widgets
o Fix fast-selections so that no gaps are left behind.
(Select all items from the last selected item to the current)
o Investigate non-default values of when() causing odd behavior.
(See the tree demo's when() pulldown..)
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