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-- Some random notes about the XKB module. --
This XKB module used by the pc_kbd input driver can load XKB configuration
files. XKB configuration files, the keymap files currently used in XFree,
are very versatile.
One of the biggest advantages of using XKB configurations is that both
the Hurd and XFree work similarly. Another advantage is that it has many
features:
* Human readable configuration files with mechanisms like include
files, replacing keys, etc.
* Many shift levels, all configurable per key type.
* Support for four groups. These groups can be used for things like
additional alphabets.
* Accessibility features like SlowKeys, StickyKeys, etc.
* Dynamic behaviour; the user can define how all keys and indicators operate.
Most support for basic operation have been implemented. Still there
are many things not implemented. If some of these things are really
important to you, please tell me!
List of not implemented XKB features:
* Accessibility and software repeat.
* Jukebox support (user configurable audible messages)
* Key database; loading new keynames from the X key database.
* Error handling; partially done.
* Indicators (Keyboard LEDs, etc.) not working, partially implemented.
* ISOLock not implemented.
* No support for non UTF-8 locales.
* No support for rarely used features (Many of they don't even work in
X AFAIK).
* Many other stuff doesn't work (lock, radio group, overlays, etc.).
If I forgot something important, please report it :)
* The scanner and parser are still ugly and far from optimal!
---
Installation:
This XKB module is an optional feature of pc-kbd input driver. Whether
it is compiled in or not is defined by the precense of XKB_SUPPORT
preprocessor symbol.
In addition to the usual Hurd dependencies, you need yacc and lex
programs to generate the scanner and parser.
--
Using it:
To use it you need XKB configuration files. These are included with
XFree and will be placed in /share/X11/xkb on most systems.
This module adds the following set of options to pc-kbd for overriding
the default behaviour:
--model : model of the keyboard (usually pc105).
--layout : The layout of the keyboard (us, fr, it, etc).
--variant : The variant of layout to use (latin9, dvorak, etc).
--options : The options to pass to xkbcommon.
--composefile : The compose file to use for key composition in the keyboard (ctrl, alt, etc).
--ctrlaltbs : CTRL+Alt+Backspace will exit the console client.
--no-ctrlaltbs : CTRL+Alt+Backspace will not exit the console client.
--repeat-delay : The number of jiffies the driver should wait before
starting to repeat keys. By default this is 50 jiffies.
--repeat-interval : The number of jiffies the driver should wait
between each repeated key. By default this is 10 jiffies.
After that you can use these keybindings:
Alt + F1...F12: Switch VC.
Alt + Left, Right: Switch to the console left or right of the current
console.
Alt + Up, Down: Scroll the console by one line up or down.
Ctrl + PgUp, PgDown: Scroll the console up or down with 1/2 screen.
Alt + Home: Scroll the console to the 0% of the scrollback buffer.
Ctrl + Home: Scroll the console to the 25% of the scrollback buffer.
Alt + End: Scroll the console to the 100% of the scrollback buffer.
Alt + End: Scroll the console to the 75% of the scrollback buffer.
--
Hurd features:
If you want to use the Hurd features yourself make sure you put the
changes in files that are not used by Xfree because it cannot parse
these options. See how I did it for the configuration described in the
previous paragraph.
Function list:
--
ConsScroll: scroll the console x lines or to a fixed position.
parameters:
Screen = pos : Scroll to screen #pos.
Screen += i : Scroll i screens up.
Screen -= i : Scroll i screens down.
line = pos : Scroll to line #pos.
line += i : Scroll i lines up.
line -= i : Scroll i lines down.
percent = percentage : Scroll to PERCENTAGE % of the scrollback
buffer.
Example:
ConsScroll (screen += 0.5) --> Scroll down a 1/2 screen.
--
SwitchScreen: Switch to a VC.
paramaters:
screen = i : Switch to VC #i.
screen += i : Switch to #i consoles to the right.
screen -= i : Switch to #i consoles to the left.
sameserver is a flag that will be added. I want to use it to switch to
external consoles like X servers and SVGALib screens.
example:
SwitchScreen (screen += 1) --> Switch to the console right of the
current console.
--
More functions will be added. One to send keysyms to other VCs (can be
useful to control a mixer, ogg vorbis player, etc.). It should also
be capable of inserting often used strings like "apfelkorn" :).
A function to call the configuration dialog should be added.
Functions to execute things should be added. Think about binding the
reboot command to Ctrl+Alt+Delete for example. Wolfgang also asked me
for scheme support, but I don't know enough about scheme to know what
cool stuff is possible with this (I don't know scheme... Hey! Not
everyone can be perfect ;)).
Perhaps functions can be added to control the console client in other
ways.
More ideas would be interesting to hear :)
--
Enjoy this stuff and please send me many bug reports :)
Marco Gerards
(metgerards@student.han.nl)
|
