matplotlib doesn't support double clicks, and I was wondering if that
was a design decision, or something that had been relegated to the "to
do" box for someday. Hoping that it was still in the "todo" box, I
think I can put most of it in without too much trouble, and supply you
with a patch.
The changes would be:
1) an extra flag MouseEvent, so that in a button_press_event
handler, you can can tell if the press was a result of a double click
or not, and
2) code in the backends to catch and set the double click flag properly
I looked through the backends, and it was clear what to do in order to
support double clicks for all but backend_macosx.py. I might be able
to deduce what to do there, but will likely need some support from
someone in order to get that one done.
To support the double clicks, I would rather not create a new event
like 'button_doubleclick_event', for backwards compatibility. I
believe that if we just stick with 'button_press_event' and set an
extra flag within the MouseEvent, any existing mpl code will still
work properly, because the normal sequence of events on a double click
are; DOWN, UP, DBLCLICK, UP. In current versions of matplotlib, the
DBLCLICK event is treated as a DOWN, and the strategy of just adding a
extra flag in MouseEvent would mean that existing mpl code would still
see the double click event as a DOWN.
Anyway, I want to "throw a feeler" out there, and ask if the patch
would be accepted were I to go ahead and do it. I didn't want to spend
the time working on it if a decision had already been made a while
back to not ever support double clicks.