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index.js
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index.js
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const iohook = require("iohook")
const robotjs = require("./node_modules/robotjs/index.js")
const states = {down: "down", up: "up"}
const keys = {29: "control", 42: "shift"}
const awaitRobot = []
const held = []
const possibleTriggers = []
const triggered = []
const removed = []
let processing = false
const triggerGroups = [
[
29,
42
]
]
const triggerSpeed = 150
iohook.on("keydown", (evt) => {
let key = evt.keycode
if(!awaitRobot.includes(key)){
if(!held.includes(key)){
held.push(key)
if(!processing){
processing = true
keyDownHandler(key)
processing = false
}
}
}else{
removeKey(key, awaitRobot)
}
})
iohook.on("keyup", (evt) => {
let key = evt.keycode
if(!awaitRobot.includes(key)){
if(held.includes(key)){
removeKey(key, held)
if(!processing){
processing = true
keyUpHandler(key)
processing = false
}
}
}else{
removeKey(key, awaitRobot)
}
})
iohook.start()
writeTriggered()
function keyDownHandler(key){
possibleTriggers.push(key)
let timer = setTimeout(function(){
removeKey(key, possibleTriggers)
}, triggerSpeed)
processGroups(key, false)
}
function keyUpHandler(key){
processGroups(key, true)
writeTriggered()
}
function processGroups(key, allowTrigger){
let found = []
let done = false
triggerGroups.forEach((group)=>{
if(group.includes(key)){
group.forEach((key)=>{
if(!found.includes(key)){
found.push(key)
if(triggered.includes(key)){
removed.push(key)
setState(key, states.up)
}else if(allowTrigger){
if(possibleTriggers.includes(key) && !removed.includes(key) && !done){
done = true
setState(key, states.down)
}
}
if(allowTrigger){
removeKey(key, removed)
}
}
})
}
})
}
function setState(key, state){
let isHeld = held.includes(key)
switch(state){
case states.down:
triggered.push(key)
break
case states.up:
removeKey(key, triggered)
break
}
awaitRobot.push(key)
robotjs.keyToggle(getKey(key), state)
}
function getKey(key){
return keys[key] ? keys[key] : key
}
function removeKey(key, array){
let i = array.indexOf(key)
if(i >= 0){
array.splice(i, 1)
}
}
function writeTriggered(){
process.stdout.cursorTo(0, 0, ()=>{
process.stdout.clearScreenDown(()=>{
console.log("Toggled: ")
triggered.forEach((key) => console.log(getKey(key)))
})
})
}