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3. Keyboard3.1. Using The Bijoy Keyboard In X Window, all the keyboard related stuff is handled by XKB.
XKB relies on some configuration files called the "symbol"
files, to get the layout of a specific keyboard. The following steps describe the
installation process of a symbol file for the Bijoy Bangla keyboard:
Below is the symbol file for the Bijoy keyboard. Save it as
bn_bijoy
.
// Symbol file for the Bijoy Bangla Keyboard.
partial default alphanumeric_keys
xkb_symbols "bijoy" {
name[group2]="Bangla";
key <AE01> { [], [ 49, exclam ] };
key <AE02> { [], [ 50, 64 ] };
key <AE03> { [], [ 51, 35 ] };
key <AE04> { [], [ 52, 36 ] };
key <AE05> { [], [ 53, 37 ] };
key <AE06> { [], [ 54, 94 ] };
key <AE07> { [], [ 55, 117 ] };
key <AE08> { [], [ 56, asterisk ] };
key <AE09> { [], [ 57, parenleft ] };
key <AE10> { [], [ 48, parenright ] };
key <AE11> { [], [ minus, 209 ] };
key <AE12> { [], [ 61, plus ] };
key <AD01> { [], [ 79, 115 ] };
key <AD02> { [], [ 104, 113 ] };
key <AD03> { [], [ 87, 88 ] };
key <AD04> { [], [ 99, 100 ] };
key <AD05> { [], [ 85, 86 ] };
key <AD06> { [], [ 80, 81 ] };
key <AD07> { [], [ 82, 83 ] };
key <AD08> { [], [ 110, 84 ] };
key <AD09> { [], [ 77, 78 ] };
key <AD10> { [], [ 111, 112 ] };
key <AD11> { [], [ bracketleft, braceleft ]};
key <AD12> { [], [ bracketright, braceright]};
key <AC01> { [], [ U84, 169 ] };
key <AC02> { [], [ 121, 126 ] };
key <AC03> { [], [ 119, 120 ] };
key <AC04> { [], [ 118, 65 ] };
key <AC05> { [], [ Multi_key, 124 ] };
key <AC06> { [], [ 101, 102 ] };
key <AC07> { [], [ 75, 76 ] };
key <AC08> { [], [ 90, 95 ] };
key <AC09> { [], [ 96, 97 ] };
key <AC10> { [], [ semicolon, colon] };
key <AC11> { [], [ 213, 211 ] };
key <TLDE> { [], [ 212, 210 ] };
key <BKSL> { [], [ 114, 116 ] };
key <AB01> { [], [ 170, 168 ] };
key <AB02> { [], [ 73, U8a ] };
key <AB03> { [], [ U87, U89 ] };
key <AB04> { [], [ 105, 106 ] };
key <AB05> { [], [ 98, 89 ] };
key <AB06> { [], [ 109, 108 ] };
key <AB07> { [], [ 103, 107 ] };
key <AB08> { [], [ comma, less ] };
key <AB09> { [], [ period, greater]};
key <AB10> { [], [ slash, question]};
} ;
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Copy bn_bijoy to
/usr/X11R6/lib/X11/xkb/symbols/
Edit the "InputDevice" section of
XF86Config so it looks like:
.........
.........
Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
Option "XkbKeycodes" "xfree86"
Option "XkbTypes" "complete"
Option "XkbCompat" "complete+leds"
Option "XkbSymbols" "us(pc104)+bn_bijoy+group(lwin_toggle)"
Option "XkbGeometry" "pc(pc104)"
EndSection
..........
..........
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The above description is for a 104-key keyboard. Restart X server by pressing
Ctrl+Alt+Bksp. After restarting X, the Bijoy keyboard should be
present along side the English one. To activate it, press the
left Win-key. If everything is okay, the
Scroll Lock LED will be on and the
key presses will produce codes according to the Bijoy keyboard
layout. Pressing the left Win-key
again will disable Bijoy and the Scroll Lock LED will go off.
To test the newly installed Bijoy keyboard, follow these steps: Open KWord, Select sutonnymj from the font list, Press the left Winkey, Start typing according to the Bijoy keyboard layout.
A handy tool for testing mouse and keypress events is
xev. This program shows all the generated codes from keypresses.
These steps are not enough, however, to write ligatures or compound
characters. The next section describes this very thing. 3.2. Writing Ligatures The ligature writing process described here is not a standard one
. At best it can be called a work-around (it has a similarity to
cuckoos laying eggs in crows' nests). If this method is used, the
"Multikey" feature won't work on Latin characters (at least when Bijoy
keyboard is needed). If there is no need to use the Multikey for
typing various Latin characters like "ssharp" then this method is
okay. The typing sequence of characters for writing ligatures is
slightly different from the the original Bijoy keyboard. Whatever is
the situation, the following steps describe a way to get the ligatures
to appear on the screen: Save the following as Compose.bijoy:
# Compose File for the Bijoy Bangla Keyboard
#
# Sequence Definition
#
# <Multi_key> Means <Compose>
# Special Character
# Special
<Multi_key> <Multi_key> : "\46"
# Ka
<Multi_key> <K> <K> : "\260"
<Multi_key> <O> <K> : "\274"
<Multi_key> <j> <K> : "\351"
<Multi_key> <l> <K> : "\256\213"
<Multi_key> <m> <K> : "\257\213"
# Kha
<Multi_key> <O> <L> : "\225\114"
<Multi_key> <m> <L> : "\366"
# Ga
<Multi_key> <M> <M> : "\271"
<Multi_key> <O> <M> : "\275"
<Multi_key> <grave> <M> : "\230\115"
<Multi_key> <j> <M> : "\352"
<Multi_key> <o> <M> : "\377"
#Gha
<Multi_key> <O> <N> : "\225\116"
<Multi_key> <grave> <N> : "\230\116"
# Cha
<Multi_key> <P> <P> : "\224\120"
<Multi_key> <T> <P> : "\302"
<Multi_key> <k> <P> : "\360"
# Chha
<Multi_key> <P> <Q> : "\224\121"
<Multi_key> <T> <Q> : "\303"
# Ja
<Multi_key> <R> <R> : "\276"
<Multi_key> <T> <R> : "\304"
<Multi_key> <e> <R> : "\342"
# Jha
<Multi_key> <R> <S> : "\300"
<Multi_key> <T> <S> : "\305"
# Io
<Multi_key> <R> <T> : "\301"
# Ta
<Multi_key> <K> <U> : "\261"
<Multi_key> <U> <U> : "\306"
<Multi_key> <Y> <U> : "\310"
<Multi_key> <b> <U> : "\233\125"
<Multi_key> <c> <U> : "\336"
<Multi_key> <j> <U> : "\353"
<Multi_key> <l> <U> : "\363"
<Multi_key> <m> <U> : "\367"
# Tha
<Multi_key> <Y> <V> : "\311"
<Multi_key> <b> <V> : "\332"
<Multi_key> <l> <V> : "\364"
# Da
<Multi_key> <W> <W> : "\307"
<Multi_key> <Y> <W> : "\312"
<Multi_key> <b> <W> : "\333"
<Multi_key> <j> <W> : "\354"
# Nna
<Multi_key> <l> <Y> : "\362"
<Multi_key> <n> <Y> : "\156\350"
# Ta
<Multi_key> <K> <Z> : "\263"
<Multi_key> <Z> <Z> : "\313"
<Multi_key> <b> <Z> : "\232\227"
<Multi_key> <c> <Z> : "\337"
<Multi_key> <m> <Z> : "\257\227"
# Tha
<Multi_key> <Z> <underscore> : "\314"
<Multi_key> <b> <underscore> : "\232\222"
<Multi_key> <m> <underscore> : "\257\222"
# Dda
<Multi_key> <M> <grave> : "\272"
<Multi_key> <grave> <grave> : "\317"
<Multi_key> <b> <grave> : "\233\140"
<Multi_key> <e> <grave> : "\343"
# Dha
<Multi_key> <M> <a> : "\273"
<Multi_key> <grave> <a> : "\327"
<Multi_key> <b> <a> : "\334"
<Multi_key> <e> <a> : "\344"
# Na
<Multi_key> <K> <b> : "\113\350"
<Multi_key> <M> <b> : "\115\350"
<Multi_key> <N> <b> : "\116\350"
<Multi_key> <Y> <b> : "\131\350"
<Multi_key> <Z> <b> : "\132\350"
<Multi_key> <b> <b> : "\142\234"
<Multi_key> <c> <b> : "\143\350"
<Multi_key> <g> <b> : "\346"
<Multi_key> <k> <b> : "\153\350"
<Multi_key> <m> <b> : "\370"
<Multi_key> <n> <b> : "\375"
# Pa
<Multi_key> <c> <c> : "\340"
<Multi_key> <g> <c> : "\244\143"
<Multi_key> <j> <c> : "\355"
<Multi_key> <l> <c> : "\256\143"
<Multi_key> <m> <c> : "\257\143"
# Pha
<Multi_key> <g> <d> : "\347"
<Multi_key> <j> <d> : "\356"
<Multi_key> <l> <d> : "\365"
<Multi_key> <m> <d> : "\371"
# Ba
<Multi_key> <K> <e> : "\113\241"
<Multi_key> <M> <e> : "\115\246"
<Multi_key> <R> <e> : "\122\241"
<Multi_key> <U> <e> : "\125\241"
<Multi_key> <Y> <e> : "\131\136"
<Multi_key> <Z> <e> : "\132\241"
<Multi_key> <underscore> <e> : "\137\241"
<Multi_key> <grave> <e> : "\330"
<Multi_key> <a> <e> : "\141\237"
<Multi_key> <b> <e> : "\233\136"
<Multi_key> <e> <e> : "\145\237"
<Multi_key> <g> <e> : "\244\136"
<Multi_key> <j> <e> : "\152\246"
<Multi_key> <k> <e> : "\153\246"
<Multi_key> <m> <e> : "\257\136"
<Multi_key> <n> <e> : "\156\237"
# Bha
<Multi_key> <grave> <f> : "\231\242"
<Multi_key> <g> <f> : "\244\242"
# Ma
<Multi_key> <K> <g> : "\264"
<Multi_key> <M> <g> : "\115\245"
<Multi_key> <O> <g> : "\225\147"
<Multi_key> <U> <g> : "\125\245"
<Multi_key> <Z> <g> : "\315"
<Multi_key> <grave> <g> : "\331"
<Multi_key> <a> <g> : "\141\245"
<Multi_key> <b> <g> : "\142\245"
<Multi_key> <g> <g> : "\244\247"
<Multi_key> <j> <g> : "\152\245"
<Multi_key> <k> <g> : "\153\245"
<Multi_key> <l> <g> : "\256\247"
<Multi_key> <m> <g> : "\257\247"
<Multi_key> <n> <g> : "\376"
# La
<Multi_key> <K> <j> : "\113\254"
<Multi_key> <M> <j> : "\115\254"
<Multi_key> <c> <j> : "\143\254"
<Multi_key> <d> <j> : "\144\254"
<Multi_key> <e> <j> : "\145\254"
<Multi_key> <f> <j> : "\146\254"
<Multi_key> <g> <j> : "\244\254"
<Multi_key> <j> <j> : "\152\254"
<Multi_key> <l> <j> : "\153\254"
<Multi_key> <m> <j> : "\257\254"
<Multi_key> <n> <j> : "\156\254"
# Ssa
<Multi_key> <K> <l> : "\266"
# Sa
<Multi_key> <K> <m> : "\267"
<Multi_key> <b> <m> : "\335"
<Multi_key> <c> <m> : "\341"
# Miscellaneous
<Multi_key> <K> <ordfeminine> : "\265"
<Multi_key> <Z> <ordfeminine> : "\316"
<Multi_key> <f> <ordfeminine> : "\345"
<Multi_key> <n> <U84> : "\374"
<Multi_key> <M> <y> : "\270"
<Multi_key> <i> <y> : "\151\223"
<Multi_key> <k> <y> : "\357"
<Multi_key> <n> <y> : "\373"
<Multi_key> <i> <asciitilde> : "\151\203"
# Vowels
<Multi_key> <w> : "\102"
<Multi_key> <x> : "\103"
<Multi_key> <y> : "\104"
<Multi_key> <y> : "\104"
<Multi_key> <asciitilde> : "\105"
<Multi_key> <U84> : "\106"
<Multi_key> <U87> : "\107"
<Multi_key> <U89> : "\110"
<Multi_key> <U8a> : "\112"
# End of Sequence Definition
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Get the current locale name. One way to get it is: Find the Compose file for the current locale.
/usr/X11R6/lib/X11/locale/compose.dir
lists the Compose files for all the locales. If
the locale is "C", the Compose file is
iso8859-1/Compose, i.e.
/usr/X11R6/lib/X11/locale/iso8859-1/Compose.
If the locale is "en_US.ISO8859-15," the Compose
file is iso8859-15/Compose, i.e.
/usr/X11R6/lib/X11/locale/iso8859-1/Compose.
Whichever is the Compose file for the current locale, make a
backup of it:
$ cd /usr/X11R6/lib/X11/locale/iso8859-1/
$ mv Compose Compose.real
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The above example commands were written assuming that the
locale was "C." Make Compose.bijoy
the new Compose file for the current locale:
$ cp Compose.bijoy /usr/X11R6/lib/X11/locale/iso8859-1/Compose
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The above example command was written assuming that the
locale was "C." The ligatures can be written now. To test it do the following: Open
KWord, Select sutonnymj from the font list, Press the left Winkey, Press 'Hashanta'(g)+'Ka'(j)+'Ka'(j).
If the output is Zukta Ka, then the ligature writing process is okay.
Now the thing to notice here is that, unlike the original Bijoy
keyboard, Hashanta has been pressed before the two 'Ka's. The
original Bijoy keyboard requires that 'Hashanta' be pressed in the
midst of the two 'Ka's, for example: Zukta Ka = 'Ka'(j)+'Hashanta'(g)+'Ka'(j) Except this change of sequence for writing ligatures there
are a few minor ones that have been listed below:
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