[PATCH] virtual-keyboard: Add new virtual keyboard protocol

[Dorota Czaplejewicz]

On Thu, 17 May 2018 18:53:10 +0200
Dorota Czaplejewicz <dorota.czaplejewicz at puri.sm> wrote:

> Provides the ability to emulate keyboards by applications. Complementary to input-method protocol.
> 
> The interface is a mirror copy of wl_keyboard, with removed serials, and added seat binding.
> ---
> 
> This proposal is another one needed by Purism to support on screen keyboards on a phone screen.
> 
> Virtual-keyboard is a protocol to let applications send arbitrary keyboard events. The need for this protocol comes from the fact that the input-method protocol combines two separate input responsibilities. It currently deals both with text input and raw keyboard events. I hope to split input-method along this line into virtual-keyboard and the rest of input-method. I'm going to submit the updated input-method for review soon.
> 
> Applications should be able to control both interfaces at the same time. A screen keyboard supporting autocorrect (input-method) still wants to send arrow keys (vityual-keyboard) correctly. Because of this, both kinds of events at minimum must be sent to the same seat. I made the seat binding explicitly done by the application, taking inspiration from text-input protocol, which assumes per-seat binding as well.
> 
> Input welcome.
> 
> Cheers,
> Dorota


Apart from the typo that Silvan spotted, I have also encountered the issue where the .c/.h generator complained about undefined key_state and keymap_format enums which are defined in wayland.xml. I'm not sure what the correct way to solve this - should they be copied into this protocol?

Cheers,
Dorota
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