The Space Cadet `Top` key for Windows. (Inspired by http://stevelosh.com/blog/2012/10/a-modern-space-cadet/#math)

MathLayer.ahk

; MathLayer.ahk
; Created by John Ankarström (jocap)
; Inspired by Steve Losh: http://stevelosh.com/blog/2012/10/a-modern-space-cadet/#math
; Compatible with US key layout

; Todo: Caps Lock support
; Issues: Selecting with LShift + arrow keys doesn't work great, RShift + arrow keys doesn't work at all

global MathMode := 0

Ins::
{
	global MathMode
	if (MathMode = 0) {
		MathMode := 1
		SoundBeep, 700
	} else {
		MathMode := 0
		SoundBeep
	}
	return
}

a::
{
	if (MathMode = 1) {
		Send {U+2227}
	} else {
		Send {U+0061}
	}
	return
}
+a::
{
	if (MathMode = 1) {
		Send {U+2135}
	} else {
		Send {U+0041}
	}
	return
}
c::
{
	if (MathMode = 1) {
		Send {U+2218}
	} else {
		Send {U+0063}
	}
	return
}
+c::
{
	if (MathMode = 1) {
		Send {U+2102}
	} else {
		Send {U+0043}
	}
	return
}
e::
{
	if (MathMode = 1) {
		Send {U+2208}
	} else {
		Send {U+0065}
	}
	return
}
+e::
{
	if (MathMode = 1) {
		Send {U+2209}
	} else {
		Send {U+0045}
	}
	return
}
f::
{
	if (MathMode = 1) {
		Send {U+222B}
	} else {
		Send {U+0066}
	}
	return
}
i::
{
	if (MathMode = 1) {
		Send {U+2229}
	} else {
		Send {U+0069}
	}
	return
}
+i::
{
	if (MathMode = 1) {
		Send {U+221e}
	} else {
		Send {U+0049}
	}
	return
}
+n::
{
	if (MathMode = 1) {
		Send {U+2115}
	} else {
		Send {U+004E}
	}
	return
}
o::
{
	if (MathMode = 1) {
		Send {U+2228}
	} else {
		Send {U+006F}
	}
	return
}
r::
{
	if (MathMode = 1) {
		Send {U+221A}
	} else {
		Send {U+0072}
	}
	return
}
+r::
{
	if (MathMode = 1) {
		Send {U+211D}
	} else {
		Send {U+0052}
	}
	return
}
u::
{
	if (MathMode = 1) {
		Send {U+222A}
	} else {
		Send {U+0075}
	}
	return
}
x::
{
	if (MathMode = 1) {
		Send {U+22BB}
	} else {
		Send {U+0078}
	}
	return
}
+z::
{
	if (MathMode = 1) {
		Send {U+2124}
	} else {
		Send {U+005A}
	}
	return
}
-::
{
	if (MathMode = 1) {
		Send {U+00AC}
	} else {
		Send {U+002D}
	}
	return
}
=::
{
	if (MathMode = 1) {
		Send {U+2260}
	} else {
		Send {U+003D}
	}
	return
}
+::
{
	if (MathMode = 1) {
		Send {U+00B1}
	} else {
		Send {U+002B}
	}
	return
}
/::
{
	if (MathMode = 1) {
		Send {U+00F7}
	} else {
		Send {U+002F}
	}
	return
}
+,::
{
	if (MathMode = 1) {
		Send {U+2264}
	} else {
		Send {U+003C}
	}
	return
}
+.::
{
	if (MathMode = 1) {
		Send {U+2265}
	} else {
		Send {U+003E}
	}
	return
}
+8::
{
	if (MathMode = 1) {
		Send {U+00D7}
	} else {
		Send {U+002A}
	}
	return
}
0::
{
	if (MathMode = 1) {
		Send {U+2205}
	} else {
		Send {U+0030}
	}
	return
}
+`::
{
	if (MathMode = 1) {
		Send {U+2248}
	} else {
		Send {U+007E}
	}
	return
}
[::
{
	if (MathMode = 1) {
		Send {U+2282}
	} else {
		Send {U+005B}
	}
	return
}
+[::
{
	if (MathMode = 1) {
		Send {U+2284}
	} else {
		Send {U+007B}
	}
	return
}
^[::
{
	if (MathMode = 1) {
		Send {U+2286}
	} else {
		Send {RControl Down}[{RControl Up}
	}
	return
}
^+[::
{
	if (MathMode = 1) {
		Send {U+2288}
	} else {
		Send {RControl Down}{RShift Down}[{RShift Up}{RControl Up}
	}
	return
}
]::
{
	if (MathMode = 1) {
		Send {U+2283}
	} else {
		Send {U+005D}
	}
	return
}
+]::
{
	if (MathMode = 1) {
		Send {U+2285}
	} else {
		Send {U+007D}
	}
	return
}
^]::
{
	if (MathMode = 1) {
		Send {U+2287}
	} else {
		Send {RControl Down}]{RControl Up}
	}
	return
}
^+]::
{
	if (MathMode = 1) {
		Send {U+2289}
	} else {
		Send {RControl Down}{RShift Down}]{RShift Up}{RControl Up}
	}
	return
}
Left::
{
	if (MathMode = 1) {
		Send {U+2190}
	} else {
		Send {NumpadLeft}
	}
	return
}
+Left::
{
	if (MathMode = 1) {
		Send {U+219a}
	} else {
		Send {RShift Down}{NumpadLeft}{RShift Up}
	}
	return
}
^Left::
{
	if (MathMode = 1) {
		Send {U+21d0}
	} else {
		Send {RControl Down}{NumpadLeft}{RControl Up}
	}
	return
}
^+Left::
{
	if (MathMode = 1) {
		Send {U+21cd}
	} else {
		Send {RControl Down}{RShift Down}{NumpadLeft}{RShift Up}{RControl Up}
	}
	return
}
Right::
{
	if (MathMode = 1) {
		Send {U+2192}
	} else {
		Send {NumpadRight}
	}
	return
}
+Right::
{
	if (MathMode = 1) {
		Send {U+219b}
	} else {
		Send {RShift Down}{NumpadRight}{RShift Up}
	}
	return
}
^Right::
{
	if (MathMode = 1) {
		Send {U+21d2}
	} else {
		Send {RControl Down}{NumpadRight}{RControl Up}
	}
	return
}
^+Right::
{
	if (MathMode = 1) {
		Send {U+21cf}
	} else {
		Send {RControl Down}{RShift Down}{NumpadRight}{RShift Up}{RControl Up}
	}
	return
}
Up::
{
	if (MathMode = 1) {
		Send {U+2194}
	} else {
		Send {NumpadUp}
	}
	return
}
+Up::
{
	if (MathMode = 1) {
		Send {U+21ae}
	} else {
		Send {RShift Down}{NumpadUp}{RShift Up}
	}
	return
}
^Up::
{
	if (MathMode = 1) {
		Send {U+21d4}
	} else {
		Send {RControl Down}{NumpadUp}{RControl Up}
	}
	return
}
^+Up::
{
	if (MathMode = 1) {
		Send {U+21ce}
	} else {
		Send {RControl Down}{RShift Down}{NumpadUp}{RShift Up}{RControl Up}
	}
	return
}
Down::
{
	if (MathMode = 1) {
		Send {U+2194}
	} else {
		Send {NumpadDown}
	}
	return
}
+Down::
{
	if (MathMode = 1) {
		Send {U+21ae}
	} else {
		Send {RShift Down}{NumpadDown}{RShift Up}
	}
	return
}
^Down::
{
	if (MathMode = 1) {
		Send {U+21d4}
	} else {
		Send {RControl Down}{NumpadDown}{RControl Up}
	}
	return
}
^+Down::
{
	if (MathMode = 1) {
		Send {U+21ce}
	} else {
		Send {RControl Down}{RShift Down}{NumpadDown}{RShift Up}{RControl Up}
	}
	return
}