Trigger 2 buttons when pressed in the middle and slide trigger

[Lzycode-byte]

Describe the solution you'd like
In PPSSPP emulator you can press the gap between the 2 button for example: pressing the gap between triangle and circle and those 2 will trigger. Also a slide trigger,sliding through the buttons trigger them. This was really great feature when using the gamepad in competitive games like tekken.
Thank you