On Oct 20, 11:55 am, "Edward K. Ream" <[EMAIL PROTECTED]> wrote:
> This is probably all for today. I'll rewrite the tree code tomorrow.
Well, I got excited and put in the new hints into Leo's core. All
unit tests pass, and pylint is happy.
The commander now has methods such as:
def redraw_after_icons_changed(self):
return self.frame.tree.redraw_after_icons_changed()
In leoTkinterTree this is just equivalent to redraw. Here is the
complete list.
redraw_after_icons_changed = redraw
redraw_after_clone = redraw
redraw_after_contract = redraw
redraw_after_delete = redraw
redraw_after_expand = redraw
redraw_after_insert = redraw
redraw_after_move_down = redraw
redraw_after_move_left = redraw
redraw_after_move_right = redraw
redraw_after_move_up = redraw
redraw_after_select = redraw
This is a preliminary list. It will probably suffice for all the
important optimizations.
Surprising many calls to redraw got converted to
redraw_after_icons_changed, which merely updates icons in the tree.
But the rest of these "hint" methods are going to be non-trivial.
When in doubt, I left the call to c.redraw intact, which is a request
(demand) that the entire tree be updated. This will likely be done by
drawing only the visible widgets, in which case
tree.redraw_after_expand has got some real work to do.
There is one place where the original code was redraw_now instead of
redraw: I followed the hint with c.outerUpdate, so the old and new
code should be precisely identical.
Tomorrow the real work begins.
Edward
P.S. I fixed a failed unit tests that was complaining that insert-
headline was drawing the screen twice, and it was. This must be a
recent change, though I have no memory of it. Oh well, there will be
plenty more hacks to come :-)
EKR
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