What is this?

These is a system service to enhance the compatibility of the Logitech Trackball Marble, Logitech MX Anywhere 2S, and other devices I may have with the Linux OS. It contains scripts that start during system boot and map the device inputs into special commands, like Back, Forward, Scrolling, Alt+Tab, macros, and so on. If a device is not present/detected it simply ignores the enhancements. It is also aware of the current focused window. For instance, "Switch Tabs" will map to different shortcuts deppending on your app.

Usage

Logitech Trackball Marble

Normal Mode

Shortcut	Action
A	Left Click
B	Go to Declaration / Open in new Tab
C	Right Click
D	Middle Click
E	Move Cursor

Holding B

Shortcut	Action
B + A	Show All Windows
B + C	Back
B + D	Forward
B + E	Vertical and Horizontal Scrolling

Holding C

Shortcut	Action
C + A	Search Selection
C + B	Reopen Tab
C + D	New Tab or Document
C + E	Change Volume (Vertical) or Undo / Redo (Horizontal)

Holding D

Shortcut	Action
D + A	Close Tab or Terminal
D + B	Close Window
D + C	Advanced Search: Tabs, Files, Content, Symbols, so on
D + E	Switch Tabs (Vertical) or Switch Windows (Horizontal)

Logitech MX Anywhere 2S

Normal Mode

Shortcut	Action
A	Left Click
B	Middle Click
C	Right Click
D	Horizontal Scroll
E	Vertical Scroll
F	Horizontal Scroll
H	Back
G	Forward
G + H	Show All Windows

Browser Mode

Shortcut	Action
H + A	Go to Declaration
H + B	Close Tab
H + C	Reopen Tab
H + D	Zoom In
H + E	Switch Tabs
H + F	Zoom Out

System mode

Shortcut	Action
G + A	Undo
G + B	Close Window
G + C	Redo
G + E	Switch Window

Multimedia Mode

Shortcut	Action
G + H + A	Play / Pause
G + H + B	Stop
G + H + C	Mute / Unmute
G + H + D	Next Track
G + H + E	Volume Up / Down
G + H + F	Previous Track

Macro Keyboard

Shortcut	Action
REC + MACRO_N	Start recording / reset recording keyboard input sequence in buffer N (activates blue led)
MACRO_N (blue led on)	Finish recording the macro (deactivates led)
MACRO_N (blue led off)	Play the recorded sequence of keys
TOGGLE_N	Toggle macro MACRO_N between two sets, MACRO_1 to MACRO_6 (left) or MACRO_7 to MACRO_12 (right)
Yellow led	Indicates a key is being pressed

XPPEN Deco Pro

Key	Mode	Can draw?	Show drawing	Background
A	Transparent	Yes	Yes	None
B	Opaque	Yes	Yes	Opaque
C	Passthrough	No	Yes	None
D	Disabled	No	No	None

Transparent/Opaque/Passthrough modes

Key	Action
E	Previous page
F	Next page
G	Undo
H	Redo
I	Change brush size
J	Move paper
K	Touch the tablet to draw
L	Eraser mode
M	Open Menu (Planned)

Disabled mode

Key	Action
E	Planning
F	Planning
G	Planning
H	Planning
I	Planning
J	Planning
K	Left mouse click
L	Middle mouse click
M	Right mouse click

Dependencies

This daemon requires python3, pip, evdev, inotifywait, xclip and edid-decode. It has only been tested in Ubuntu 22.04 LTS, you can install its dependencies with the following commands.

sudo apt update
sudo apt install -yq libpython3-dev inotify-tools xclip edid-decode
sudo pip3 install evdev

Install

Install the python service and compiled programs

# Make sure your qmake is installed and accessible via PATH. For instance, qt creator would install it around your home directory:
sudo bash -c "PATH='/home/$USER/Qt/6.4.0/gcc_64/bin/':\$PATH ./install.sh"

# Start the service in the system
sudo service devstream start

# Activate autostart during system boot
sudo systemctl enable devstream

Uninstall

# Stop services, uninstall them, and remove all files
sudo ./uninstall.sh