Missing macOS Command Key Detection in Pixel Streaming's KeyboardController

[OMantel1]

Component your question relates to

• Frontend library
• Frontend UI library
• This repo

It seems that Pixel Streaming does not detect the macOS Command keys. The KeyboardController class contains the CodeToKeyCode list of keyboard keys, but this list does not include the Command keys 91 and 93 for macOS MetaLeft and MetaRight.

Is there a specific reason for this?
Is it possible to extend this list from the web? It seems that the KeyboardController class is not modifiable.
Are you considering adding macOS keys to this list?

Thank you.

[lukehb]

The reason is that on the UE side we have no implementation set up for those keys (coming from a Windows centric origin) but I can see now that they are quite common/useful on Mac.

A clip from UE Pixel Streaming source code:

		/*  91 */ /*&EKeys::LeftWindowKey*/ &EKeys::Invalid,
		/*  92 */ /*&EKeys::RightWindowKey*/ &EKeys::Invalid,
		/*  93 */ /*&EKeys::SelectKey*/ &EKeys::Invalid,

I think what needs to happen is both the frontend code and the UE code need to be updated to allow these command keys to be sent.

CC @DenisTensorWorks For an internal ticket.

[lukehb]

@OMantel1 Can you share you use case so we make sure it is supported when we go to do this fix? E.g. How are you testing this?

[OMantel1]

@lukehb The use case is as follows:
We use the ZQSD keys to move the user.
The Command keys are used for undo/redo (Command Z, Command Shift Z), but command key is not detected
We expect to have the same result with these keys on Mac than with Control Z on Windows

[lukehb]

@DenisTensorWorks Can you share our internal ticket here for @OMantel1

[DenisTensorWorks]

Internal reference is UE-228795

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