Fix for mouse input when using PDCursesMod backend

[jordan-hemming]

Mouse movement events weren't working correctly on PDCursesMod. They would only occur when a button was pressed. Also pressing the Control key with a mouse button would report the Alt key being pressed (keyboard events were fine though).

It turns out that PDCurses uses different bits for the mouse event modifiers than either NCurses 5 or 6. PDCursesMod uses this same bitmask. Specifically:

Shift = 1<< 26
Control = 1 << 27
Alt = 1 << 28
ReportPosition = 1 << 29

These are left shifted by one compared to NCurses 6, with Shift and Control swapped. Since you already have different mouse event parsing for NCurses 5 and 6 I just added another one for PDCurses.

I took the liberty of adding a new overload to CursesMouseEventParser.Get which takes an enum rather than an integer as I thought this was more clear with the new addition (the old API is still available, marked as deprecated). If you'd prefer to just stick with the old API I can revert this change.

Tests have been updated as appropriate.

I've tested this with PDCursesMod-WinCon and PDCursesMod-WinGUI on Windows 11 x64, and it fixes mouse movement and the modifier keys.

PDCurses-WinCon still doesn't support the mouse correctly, but I think that's a problem upstream.

I've also tested NCurses 6 on Linux x64 to check that nothing is broken.

[pavkam]

Hi @jordan-hemming, great work and many thanks for the fixes -- just one ask for you -- please add your name to the copyright headers and bump the years in them as well. I will get some time to instrument the repo with better workflows hopefully this week and then it will become easier.

[jordan-hemming]

Will do. I assume you just want me to update the headers for the files I've modified, rather than for the whole project?

[pavkam]

Will do. I assume you just want me to update the headers for the files I've modified, rather than for the whole project?

The files you modified. I'll add a contributors file in another PR and make it cleaner