The XKB Configuration Guide
: Direct XKB Configuration
Previous: Selecting XKB Configuration
Next: Keymap XKB Configuration
3. Direct XKB Configuration
Generally, you can directly prescribe what configuration of each of basic
xkb components should be used to form the resulting keyboard mapping.
This method is rather "brute force". You precisely need to know the structure
and the meaning of all of used configuration components.
This method also exposes all xkb configuration details directly into XFree86
configuration file which is a not very fortunate fact.
In rare occasions it may be needed, though. So how does it work?
3.1. Basic Components
There are five basic components used to form a keyboard mapping:
- key codes - a translation of the scan codes produced by the
keyboard into a suitable symbolic form
- types - a specification of what various combinations of
modifiers produce
- key symbols - a translation of symbolic key codes into actual
symbols
- geometry - a description of physical keyboard geometry
- compatibility maps - a specification of what action should
each key produce in order to preserve compatibility with XKB-unware clients
3.2. Example Configuration
Look at the following example:
Section "InputDevice"
Identifier "Keyboard0"
Driver "Keyboard"
Option "XkbKeycodes" "xfree86"
Option "XkbTypes" "default"
Option "XkbSymbols" "en_US(pc104)+de+swapcaps"
Option "XkbGeometry" "pc(pc104)"
Option "XkbCompat" "basic+pc+iso9995"
EndSection
This configuration sets the standard XFree86 default interpretation of keyboard
keycodes, sets the default modificator types. The
symbol table is composed of extended US keyboard layout in its
variant for pc keyboards with 104 keys plus all keys
for german layout are redefined respectively. Also the logical
meaning of Caps-lock and Control keys is swapped.
The standard keyboard geometry (physical look) is set to pc style
keyboard with 104 keys. The compatibility map is set to allow
basic shifting, to allow Alt keys to be interpreted and also
to allow iso9995 group shifting.
The XKB Configuration Guide
: Direct XKB Configuration
Previous: Selecting XKB Configuration
Next: Keymap XKB Configuration
|
