Keyboard Maestro supports calculations in almost any numeric field. For example, you can Pause for 60*Time in Minutes. Calculations can also use comma separated lists of numbers as arrays, and can return such arrays, so you can operate on frames and points, for example:
Set variable ‘Temp’ To Text ‘%FrontWindowFrame%’
Set variable ‘Temp’ To Calculation ‘Temp[1]+Temp[3]/2,Temp[2]+Temp[4]/2’
Use ‘Temp’ to Set the Mouse Location
will result in the mouse being placed at the center of the front window.
Unfortunately, because of this you must use commas for this purpose, and full stops (.) for decimal numbers, regardless of your desired language.
Keyboard Maestro’s expressions include precedence, nested bracketed expressions, many inbuilt functions, various numeric bases, so you should be able to write most expressions you might like to use, as well as use it as a general purpose calculator if desired.
Operators based on precedence from lowest to highest are:
array separator (,)
separates elements of an array.
ternary operator (?)
a==b ? 3 : 4.
bitwise or (|), bitwise and (&) and bitwise xor
operators.
comparison operators (<, ≤, =, >, ≥, ≠)
compare for (in)equality and return 0 or 1.
shift operators (≪, ≫)
shift a number left or right.
addition operators (+, -)
add or subtract.
multiplication operators (*, /, MOD)
multiply, divide or mod.
power operator (^)
exponentiation.
unary prefix operators (√, -, brackets)
square root, negation, sub-expressions.
functions
a variety of functions.
numbers and variables or array accesses (5,$50,0x50,8#007,Variable,Variable[5])
identifiers and values.
unary postfix operators (!,%,°)
factorial, percent, degrees.
To minimize conflict with variables, operators and functions must be in uppercase.
Supported functions include:
SIN, COS, TAN, ASIN, ACOS, ATAN, ATAN2
trigonometry functions
SINH, COSH, TANH, ASINH, ACOSH, ATANH
hyperbolic trigonometry functions
EXP
exponentiation of e.
LOG or LN
logarithm base e.
LOG2, LOG10
logarithm base 2 or 10.
ABS
absolute value.
CEIL, FLOOR
integer ceiling or floor.
TRUNC, ROUND
truncate or round.
MIN, MAX
Minimum or maximum.
RANDOM
random real number from 0 to, but not including, N (defaults to 1).
RAND
random integer number from 0 to, but not including, N.
MICROSECONDS or MICROS
microseconds since startup.
MILLISECONDS or MILLS or MS
fractional milliseconds since startup.
SECONDS
fractional seconds since startup.
NOW
current time in seconds since the start of 1970.
TIME
time in seconds since the start of 1970.
JULIANDATE or JD
days (and fractions of days) since January 1, 4713 BC Greenwich noon.
MJD
days since the start of November 17, 1858.
TIME2JD
convert time from unix TIME to JULIANDATE.
TIME2MJD
convert time from unix TIME to MJD.
JD2MJD
convert time from JULIANDATE to MJD.
JD2TIME
convert time from JULIANDATE to TIME.
MJD2TIME
convert time from MJD to TIME.
MJD2JD
convert time from MJD to JULIANDATE.
YEAR
get the year component from a unix time (seconds since the start of 1970).
MONTH
get the month component from a unix time.
DAY
get the day component from a unix time.
DOW
get the day of the week (1 = Sunday, 7=Saturday) component from a unix time.
HOUR
get the hour component from a unix time.
MINUTE
get the minute component from a unix time.
SECOND
get the second component from a unix time.
MOUSEX
the x coordinate of the current mouse location.
MOUSEY
the y coordinate of the current mouse location.
MOUSEBUTTON
1 if the corresponding button is pressed, 0 otherwise.
SCREEN( n, Left|Right|Top|Bottom|Width|Height|MidX|MidY )
screen frame coordinates.
WINDOW( n, Left|Right|Top|Bottom|Width|Height|MidX|MidY )
window frame coordinates.
SCREENCOUNT
the number of screens (displays).
WINDOWCOUNT
the number of windows in the front application.
APPLICATIONS
the number of running applications.
IDLE
the number of (fractional) seconds the Mac has been idle.
ONLINE
whether the Mac is currently connected to the Internet.
BATTERY
whether the Mac is currently running off battery power.
SCREENSAVER
whether the Mac is currently displaying the screen saver (or the display is off).
The JD, MJD, and TIME functions return the current date and time, or can take the date (year, month, day) or date and time (year, month, day, hour, minute, seconds) to return.
The YEAR, MONTH, DAY, DOW, HOUR, MINUTE, SECOND functions return the relevant component of the current time or the can take the a unix time (seconds since the start of 1970).
The SCREEN index can be 0 for the main screen, and then 1 through n are the screens in orientation order.
The WINDOW index can be 0 for the main focussed window, and 1 through n are the screens in Z-order (1 is usually the main window), or -1 through -n in reverse order.
IDLE time is based on the Human Interface (HID) system, and so notices only HID device activity like mouse movement or keyboard presses, not things like disk access or movies playing.
Keyboard Maestro 5