One-handed typing as a theory has been floating around for a long time. In fact, the first prototypes of the mouse were tested while using a one-handed keyboard, which usually mirrors both sides onto one. For more information on one-handed typing and the Half-qwerty layout I used for this, visit
this link. There are already programs that do this, but I have yet to find a free one. Of course, if you really like this, you might consider a
half-qwerty keyboard, a true
half-keyboard, or a more exotic (and more proprietary)
Frogpad.
What this script does is it remaps the spacebar to be a modifier. When space is held, the keyboard is inverted, with the line of symmetry between g and h. Thus, e would become i, b would become n, p would become q, and so on. If the spacebar is depressed and released without pressing any other keys, a single space is sent. Modifier keys such as shift or control can be used in conjuction with Half-qwerty.
Code:
; Many thanks to Chris for helping me out with this script.
mirror_1 = 0
mirror_2 = 9
mirror_3 = 8
mirror_4 = 7
mirror_5 = 6
mirror_q = p
mirror_w = o
mirror_e = i
mirror_r = u
mirror_t = y
mirror_a = `;
mirror_s = l
mirror_d = k
mirror_f = j
mirror_g = h
mirror_z = /
mirror_x = .
mirror_c = ,
mirror_v = m
mirror_b = n
mirror_6 = 5
mirror_7 = 4
mirror_8 = 3
mirror_9 = 2
mirror_0 = 1
mirror_y = t
mirror_u = r
mirror_i = e
mirror_o = w
mirror_p = q
mirror_h = g
mirror_j = f
mirror_k = d
mirror_l = s
mirror_n = b
mirror_m = v
return
; This key may help, as the space-on-up may get annoying, especially if you type fast.
Control & Space::Suspend
; These keys are optional, but they may help if you are typing on the left-hand side.
CapsLock::Send, {BackSpace}
Space & CapsLock::Send, {Enter}
; If spacebar didn't modify anything, send a real space keystroke upon release.
space::
Send {space}
return
space & 1::
space & 2::
space & 3::
space & 4::
space & 5::
space & q::
space & w::
space & e::
space & r::
space & t::
space & a::
space & s::
space & d::
space & f::
space & g::
space & z::
space & x::
space & c::
space & v::
space & b::
space & `;::
space & ,::
space & .::
space & /::
space & 6::
space & 7::
space & 8::
space & 9::
space & 0::
space & y::
space & u::
space & i::
space & o::
space & p::
space & h::
space & j::
space & k::
space & l::
space & n::
space & m::
; Determine the mirror key, if there is one:
if A_ThisHotkey = space & `;
MirrorKey = a
else if A_ThisHotkey = space & ,
MirrorKey = c
else if A_ThisHotkey = space & .
MirrorKey = x
else if A_ThisHotkey = space & /
MirrorKey = z
else ; To avoid runtime errors due to invalid var names, do this part last.
{
StringRight, ThisKey, A_ThisHotkey, 1
StringTrimRight, MirrorKey, mirror_%ThisKey%, 0 ; Retrieve "array" element.
if MirrorKey = ; No mirror, script probably needs adjustment.
return
}
Modifiers =
GetKeyState, state1, LWin
GetKeyState, state2, RWin
state = %state1%%state2%
if state <> UU ; At least one Windows key is down.
Modifiers = %Modifiers%#
GetKeyState, state1, Control
if state1 = D
Modifiers = %Modifiers%^
GetKeyState, state1, Alt
if state1 = D
Modifiers = %Modifiers%!
GetKeyState, state1, Shift
if state1 = D
Modifiers = %Modifiers%+
Send %Modifiers%{%MirrorKey%}
return
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Here is the final version of the script.