Key Mapper

A tool to change and program the mapping of your input device buttons.


## Usage To open the UI to modify the mappings, look into your applications menu and search for 'Key Mapper' in settings. You can also start it via `key-mapper-gtk`. It works with both Wayland and X11. If stuff doesn't work, check the output of `key-mapper-gtk -d` and feel free to open up an issue here. ##### Macros It is possible to write timed macros into the center column: - `k(1).k(2)` 1, 2 - `r(3, k(a).w(500))` a, a, a with 500ms pause - `m(Control_L, k(a).k(x))` CTRL + a, CTRL + x - `k(1).h(k(2)).k(3)` writes 1 2 2 ... 2 2 3 while the key is pressed Documentation: - `r` repeats the execution of the second parameter - `w` waits in milliseconds - `k` writes a single keystroke - `m` holds a modifier while executing the second parameter - `h` executes the parameter as long as the key is pressed down - `.` executes two actions behind each other Syntax errors are shown in the UI on save. each `k` function adds a short delay of 10ms that can be configured in `~/.config/key-mapper/config`. ##### Key Names Run `key-mapper-service --key-names` for a list of supported keys for the middle column. Examples: - Alphanumeric `a` to `z` and `0` to `9` - Modifiers `Alt_L` `Control_L` `Control_R` `Shift_L` `Shift_R` - Mouse buttons `BTN_LEFT` `BTN_RIGHT` `BTN_MIDDLE` `BTN_SIDE` ... - Multimedia keys `KEY_NEXTSONG` `KEY_PLAYPAUSE` ... ##### Gamepads Tested with the XBOX 360 Gamepad. - Joystick movements will be translated to mouse movements - The second joystick acts as a mouse wheel - Buttons can be mapped to keycodes or macros - The D-Pad only works as two buttons - horizontal and vertical ## Installation The tool shows and logs if there are issues, but usually, independent of the method, you should add yourself to the `input` and `plugdev` groups so that you can read information from your devices. You have to start the application via sudo otherwise. You may also need to grant yourself write access to `/dev/uinput` to be able to inject your programmed mapping. There is a shortcut for configuring this stuff: ```bash sudo key-mapper-service --setup-permissions # now log out and back in ``` ##### Manjaro/Arch ```bash pacaur -S key-mapper-git ``` ##### Ubuntu/Debian ```bash wget "https://github.com/sezanzeb/key-mapper/releases/"\ "download/0.3.0/python3-key-mapper_0.3.0-1_all.deb" sudo dpkg -i python3-key-mapper_0.3.0-1_all.deb ``` ##### Git/pip Depending on your distro, maybe you need to use `--force` to get all your files properly in place and overwrite a previous installation of key-mapper. ```bash # method 1 sudo pip install git+https://github.com/sezanzeb/key-mapper.git # method 2 git clone https://github.com/sezanzeb/key-mapper.git cd key-mapper && sudo python3 setup.py install ``` ## Roadmap - [x] show a dropdown to select valid devices - [x] creating presets per device - [x] renaming presets - [x] show a mapping table - [x] make that list extend itself automatically - [x] read keycodes with evdev - [x] inject the mapping - [x] keep the system defaults for unmapped buttons - [x] button to stop mapping and using system defaults - [x] highlight changes and alert before discarding unsaved changes - [x] automatically load presets on login for plugged in devices - [x] make sure it works on wayland - [x] support timed macros, maybe using some sort of syntax - [x] add to the AUR, provide .deb file - [x] basic support for gamepads as keyboard and mouse combi - [x] executing a macro forever while holding down the key - [ ] map D-Pad and Joystick directions as buttons, joystick purpose via config - [ ] automatically load presets when devices get plugged in after login - [ ] mapping a combined button press to a key ## Tests ```bash pylint keymapper --extension-pkg-whitelist=evdev sudo pip install . && coverage run tests/test.py coverage combine && coverage report -m ``` To read events, `evtest` is very helpful. Add `-d` to `key-mapper-gtk` to get debug output.