I have spent time looking into how the
CompositeViewer::eventTraversal() handles event focus and different
types of events and decided the best way to improve the event handling
behaviour is to treat different classes of events in different ways,
the enum I've used to should hopefully be self explanatory:
enum EventClassification
{
EVENT_FOR_VIEW_ASSOCIATED_WITH_FOCUS,
EVENT_FOR_VIEWS_ASSOCIATED_WITH_WINDOW,
EVENT_FOR_ALL_VIEWS
};
This EvenClassification is then made for each event, so things like
RESIZE and CLOSE_WINDOW got to EVENT_FOR_VIEWS_ASSOCIATED_WITH_WINDOW,
while QUIT and USER go to EVENT_FOR_ALL_VIEWS and finally all the rest
of the events get assigned EVENT_FOR_VIEW_ASSOCIATED_WITH_FOCUS. Code
then send the event to one of more views depending upon this
classification. The new code is checked in to OSG master:
https://github.com/openscenegraph/OpenSceneGraph/commit/e17f1c4e317a23dca5e36959c9a1059dab6dd733
With this set of changes the osgWidget test program in this thread now
works as expected whether moving the mouse directly to the title bar
to resize without gaining focus, and with doing the same with getting
focus by moving the mouse over the 3d region of the window.
I welcome testing out in the community of these changes. If things
all look good I'll look into merging these improvements to the OSG-3.4
and OSG-3.2 branches.
Robert.
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