touch screen support

[bijang]

seems like an odd issue for a keyboard driven WM, but in the spirit of this being a project utilising modern software technologies, modern harware should be embraced and I think better to highlight it now than later on in the project, even if it's not a primary goal... just as times even a keyboard user will reach for the mouse or trackpad (eg after using a graphical focused program like gimp or video editor or maps or a GIS), it would be good to have the option to utilise the increasingly ubiquitous touch screen. (here also may be another reason to utilise a compositor https://github.com/stumpwm/mahogany/issues/12#issue-591073099), I believe support is underway in wlr and wayfire

[sdilts]

There is touchscreen and touchpad support in wlroots. There is also support for pointer gestures like three-finger swipes. We don't need to do anything too complicated to pass gesture events to clients, but it becomes much more complicated if we want to use touchpad/touchscreen gestures to control the compositor.

Relevant files:

• libinput page on gestures: https://wayland.freedesktop.org/libinput/doc/latest/gestures.html
• wlroots interface: <wlr/types/wlr_pointer_gestures_v1.h>

Relevant code in other projects:

• Pull request passing gestures to clients: sway #4794

[sdilts]

I don't have a device with a touchscreen capable of running Linux, so someone else is going to have to tackle this issue.

[jgarte]

mahogany on the pinephone?