cursr: getkpl – R documentation

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getkpl

Loop a Keypress

Description

Maintain a loop that listens for a keypress, then applies the keypress to a function or echoes it to the terminal screen. The user must be in a terminal to use getkp; it will not work in RStudio or the R GUI. All actions within R are halted until the keypress is returned.

Usage

getkpl(escape = "escape", fn = list(), echo = FALSE)

Arguments

`escape`	vector of character keypresses that escape the loop. The default is "escape" key.
`fn`	list of named functions
`echo`	whether the keypress should be echoed to the screen if not found in list

Value

NULL

Examples

f <- list(
	 'up'    = function(){mv(row=-1)},
  'down'  = function(){mv(row=-1)},
	 'left'  = function(){mv(col=-1)},
	 'right' = function(){mv(col=1)}
)
## Not run: 
getkpl(escape = c("escape", "enter"), fn=f, echo=FALSE)

## End(Not run)

cursr

Cursor and Terminal Manipulation

v0.1.0

MIT + file LICENSE

Authors

Chris Mann

Initial release