xvnkb  - Vietnamese keyboard input for X-Window

1. Description
    xvnkb is a Vietnamese keyboard input for X-Window. It provides a
    useful way for editing Vietnamese on X-Window environment with popular
    input methods and charsets. The software is released under the GNU 
    General Public License.

2. Features
    - Runs as a small X application in the background without any interfere
      with others.
    - Can work well with most X applications included: editors, browsers,
      office suites, ...
    - Supported Vietnamese input methods: VNI, TELEX, VIQR.
    - Supported Vietnamese charsets: TCVN3, VISCII, VPS, VNI, VIQR, Unicode
      (UTF-8).
    - Switch on/off input mode with shortcut key or with left mouse click on 
      the running icon.
    - Has been successfully tested with XFree86 on Linux, FreeBSD, OpenBSD, 
      and hope to work on other UNICES (anyone can test please contact me).

3. User Guide
3.1. Install
    The install script will help you to do all things:

    [xvnkb2-source]$ ./configure
    [xvnkb2-source]$ make install

    or

    [xvnkb2-source]$ ./configure
    [xvnkb2-source]$ make
    [xvnkb2-source]$ ./install

    and then follow the instructions of the install script.

    See the INSTALL file for more information.

3.2. Launch
    To control the status of xvnkb core (xvnkb.so), launch xvnkb gui

    $ xvnkb

    A small icon of xvnkb will appear on the screen and display the status of
    xvnkb core (input mode), which can be changed by using mouse:
    - Left button: Switch off the Vietnamese typing mode or switch on the previous
      input method,
    - Right button: Activate menu for configuring xvnkb,
    - Middle button: Exit.

    Pesonal configurations (status of current input method, charset,...) are 
    stored in file $HOME/.xvnkbrc and will be restored in the next session of xvnkb.

3.3. Manually install & launch
    In the case you want to do it manually:

    [xvnkb2-source]$ ./configure
    [xvnkb2-source]$ make
    [xvnkb2-source]$ cp xvnkb.so.<version> /path/to/your/lib/folder
    [xvnkb2-source]$ cp xvnkb /path/to/your/bin/folder

    $ export LD_PRELOAD=/path/to/your/lib/folder/xvnkb.so.<version>
    $ <launch xvnkb to control>
    $ <launch your apps here>

3.4. Function
    With your default LANG, xvnkb can help you to input following charsets:
    tcvn, vni, viscii, vps,... but maybe not unicode. So, when you want to input
    unicode, you have to set LANG=UTF-8.

    $ export LANG=UTF-8       # or LANG=en_US.UTF-8 or {something}.UTF-8
    $ <launch your apps here>

    * NOTICE:
    xvnkb works fine with all other charsets when LANG=*UTF-8 is set.

3.5. Hints for advanced users (who don't want to use GUI :)):
    Make core only with default input method = viqr

    $ make core

    Make core with debug (viqr)

    $ make core_debug

    Make core with user defined input method

    $ make core CFLAGS="-DVK_CORE_METHOD=<N>"

    where N: 1=vni, 2=telex, 3=viqr

    Also, you can change input method by setting environment variable
    VK_CORE_METHOD

    $ export VK_CORE_METHOD=1 # vni input method
    $ <launch apps>

    In this case GUI has no effect on the core. Use Alt-Shift to switch
    on/off Vietnamese input method (default is off).

    See also 3.3

4. Limits
    - Installation script works only if bash exists.

5. Others
    * Create UTF-8 locale
    For instance, your default LANG is en_US. Now you want to create UTF-8
    locale from your defalt LANG. Follow these instructions:

    # mkdir /usr/share/locale/en_US.UTF-8
    # localedef -v -ci en_US -f UTF-8 /usr/share/locale/en_US.UTF-8
    (ignore all warning & error messages)

    But it is better if you create vi_VN.UTF-8 ;)
    # mkdir /usr/share/locale/vi_VN.UTF-8
    # localedef -v -ci vi_VN -f UTF-8 /usr/share/locale/vi_VN.UTF-8

    Some applications (e.g. OpenOffice) use locale info in /usr/lib/locale.
    If your desired locale does not exist in /usr/lib/locale, you have to
    do the same as above or just make a soft link to that folder:

    # cd /usr/lib/locale
    # ln -s /usr/share/locale/en_US.UTF-8 en_US.UTF-8
    # ln -s /usr/share/locale/vi_VN.UTF-8 vi_VN.UTF-8

    * Gtk/Gnome 2.x
    Gtk/Gnome 2.x applications can use xvnkb with X-Input-Method.
    - Temporary setting: right click on input box and choose X-Input-Method
    - Permanent setting:
      o For whole system
        Edit file /etc/gtk-2.0/gtk.modules like this:
        ,--[ /etc/gtk-2.0/gtk.modules ]----------------------------------
        | ...
        |
        | "/usr/lib/gtk-2.0/<gtk-release>/immodules/im-xim.so" 
        | "xim" "X Input Method" "gtk+" "/usr/share/locale" "ko:ja:zh:vi"
        |
        | ...
        |
        | #"/usr/lib/gtk-2.0/<gtk-release>/immodules/im-viqr.so" 
        | #"viqr" "Vietnamese (VIQR)" "gtk+" "/usr/share/locale" "vi"
        |
        | ...
        `----------------------------------------------------------------

      o For normal user:
        Add following line to $HOME/.bash_profile or $HOME/.xinitrc
        ,--[ $HOME/.bash_profile or $HOME/.xinitrc ] --------------------
        | ...
        |
        | export GTK_IM_MODULE=/usr/lib/gtk-2.0/<gtk-release>/immodules/im-xim.so
        |
        | ...
        `----------------------------------------------------------------

      Where:
         <gtk-release>: exactly release number of gtk in your system

      Ex: release number is 2.2.0
         "/usr/lib/gtk-2.0/2.2.0/immodules/im-xim.so"

      More simpler:

         export GTK_IM_MODULE=xim

      Gtk will lookup for you automatically.


Thank you for using xvnkb!!! Have fun!!!

Dao Hai Lam <daohailam@yahoo.com>