Code submissions have continually suffered from formatting
inconsistencies that constantly have to be addressed. Using
clang-format simplifies this by making code formatting more consistent,
and allows automation of the code formatting so that maintainers can
focus more on the code itself instead of code formatting.
For the "ignore wheel" widgets, do not leave focus on mouse leave
events. This causes unintended side effects such as not being able to
type in edit boxes, and is very annoying.
This commit fixes the issue of being able to scroll through the mixer
with the mouse wheel without modifying the volume slider. This
functionality can be temporarily restored by holding a click on the
volume meter.
Ignore wheelEvent using subclass
slider,spinbox,combobox with eventhandlers:
wheelEvent - ignore if widget is not focused,
leaveEvent - clear focus when mouse leaves event.
Use these new subclass widgets in properties
to ignore wheelEvent when scrolling.
