The main change in wx accessibility is this:
7dab555f71 (diff-04f5191d86f95b1c4d5d9c979da65878)
However wxWindowAccessible has not been updated to take into account of that change. In particular wxWindowAccessible::GetParent() was always wrong, but it was consistent with the rest of the framework. Now it's wrong and inconsistent. This function should return an object with role window, and which has the same name.
The fix is to introduce class WindowAccessible, which is effectively our own version of wxWindowAccessible. This class does not override GetParent(), and so just relies on a standard accessible object to to the right thing in wxIAccessible::get_accParent() (which is does). This class also allows us to have our own version of GetName(), which allows us to set the accessibility names of buttons.
These changes will break the accessibility of Audacity if it is built with wxWidgets 3.0.X. If this is a problem, then there could be some #if stuff in WindowAccessible.h to turn the WindowAccessible class into one which simply inherits from wxWindowAccessible, and doesn't override anything.
Previously hovering over a down button made no difference.
Also tweaked the appearance of hover-over thumbs on dark theme sliders.
Also tweaked hover images and colours generally.
Classic retains the old style.
Hi Contrast does not distinguish between hover-up and hover-down.
... This was broken at commit 6478895a39, Win-specific change meant to fix
bug 1565 (tooltips did not show for diabled buttons on Win)
This easy one-line fix preserves that, fixes 1656 too.
... Use Command+f5 to start VoiceOver, then control+alt+ left and right arrows
to navigate.
Much better now, but still we need to do something about sliders, meters, and
numeric text controls.
... for functions in final classes.
override is like const -- it's not necessary, but it helps the compiler to
catch mistakes.
There may be some overriding functions not explicitly declared virtual and I did
not identify such cases, in which I might also add override.
... Should have no effect on generated code, except perhaps some slight faster
virtual function calls. Mostly useful as documentation of design intent.
Tried to mark every one of our classes that inherits from another, or is a
base for others, or has abstract virtual functions, and a few others besides.
* Loop play-at-speed and cut preview play-at-speed implemented.
* Shift or ctrl down now affect all relevant buttons, loop or cut preview, normal or at speed, and append-record.
