Add option to configure mouse bindings

[rom1v]

The argument must be exactly 4 characters, one for each secondary click:

--mouse-bind=xxxx
             ^^^^
             ||||
             ||| `- 5th click
             || `-- 4th click
             | `--- middle click
              `---- right click

Each character must be one of the following:

• +: forward the click to the device
• -: ignore the click
• b: trigger shortcut BACK (or turn screen on if off)
• h: trigger shortcut HOME
• s: trigger shortcut APP_SWITCH
• n: trigger shortcut "expand notification panel"

For example:

scrcpy --mouse-bind=bhsn  # the default mode
scrcpy --mouse-bind=++++  # forward all clicks
scrcpy --mouse-bind=++bh  # forward right and middle clicks,
                          # use 4th and 5th for BACK and HOME

This deprecates --forward-all-clicks (use --mouse-bind=++++ instead).

Refs #2258 (comment)

---

Also forward all clicks by default for UHID/AOA

By default, only the left click is forwarded to the device, and secondary clicks trigger shortcuts (the behavior can now be configured by --mouse-bind=xxxx).

But when the mouse mode is relative (AOA and UHID modes), forward all clicks by default. This makes more sense since the cursor is handled on the device side, the user expects all mouse buttons to be forwarded.

Refs #4727 (comment)

Supersedes #4877

[rom1v]

I'm not sure about the second part (forwarding all clicks by default only for AOA and UHID), that might add confusion.

Maybe keeping the shortcuts bhsn for all secondary clicks by default whatever the mouse mode is better, what do you think?

[123SONIC321]

@rom1v I've tested it, and I'm glad to report that everything worked as expected. I didn't encounter any issues. However, I do have one question: Once I've set the keybinds, do I need to set them again the next time I use the program, or does it remember them?

[rom1v]

I've tested it, and I'm glad to report that everything worked as expected. I didn't encounter any issues.

Thank you for the feedback 👍

Once I've set the keybinds, do I need to set them again the next time I use the program, or does it remember them?

Scrcpy does not remember anything, all configuration is passed via command line arguments.

But you can just add the arguments you want in a script: https://github.com/Genymobile/scrcpy/blob/master/doc/windows.md#run

[rom1v]

🚀