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TimeTrail.lua
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TimeTrail.lua
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-- TimeTrail: https://github.com/sryo/Spoons/blob/main/TimeTrail.lua
-- This Hammerspoon script displays the current time near the mouse pointer as you move it across the screen.
-- The text turns red if the battery is low, fades out if the mouse is idle and disappears during typing.
local is24HourFormat = true
local fontName = nil
local fontSize = 16
local textPositionRadius = 30
local normalColor = { white = 1, alpha = 1 }
local lowBatteryColor = { red = 1, alpha = 1 }
local batteryThreshold = 30
local hideTextDelay = 2
local canvasWidth = fontSize + 4
local canvasHeight = fontSize + 2
function displayTimeNearMouse()
local mousePosition = hs.mouse.absolutePosition()
local function checkBatteryStatus()
local batteryPercentage = hs.battery.percentage()
local isCharging = hs.battery.isCharging()
if batteryPercentage <= batteryThreshold and not isCharging then
return lowBatteryColor
else
return normalColor
end
end
local formatString = is24HourFormat and "%H" or "%I"
local function getMinutesAngle()
local currentTime = os.date("*t")
return (currentTime.min * 6) + (currentTime.sec * 0.1)
end
local function getHoursTextPosition(mousePosition, angle)
local x = mousePosition.x + textPositionRadius * math.sin(math.rad(angle)) - 8
local y = mousePosition.y - textPositionRadius * math.cos(math.rad(angle)) - 7
-- boundary check
local screenBounds = hs.mouse.getCurrentScreen():fullFrame()
local edgeMargin = 8
if x < edgeMargin then
x = edgeMargin
elseif x + canvasWidth > screenBounds.w - edgeMargin then
x = screenBounds.w - edgeMargin - canvasWidth
end
if y < edgeMargin then
y = edgeMargin
elseif y + canvasHeight > screenBounds.h - edgeMargin then
y = screenBounds.h - edgeMargin - canvasHeight
end
return hs.geometry.point(x, y)
end
local hoursText = hs.canvas.new(hs.geometry.rect(0, 0, canvasWidth, canvasHeight))
local function updateHoursText()
local hoursString = hs.styledtext.new(os.date(formatString), {
font = { name = fontName, size = fontSize },
color = checkBatteryStatus(),
shadow = {
offset = { h = -1, w = 0 },
blurRadius = 2,
color = { alpha = 1 }
}
})
hoursText[1] = {
type = "text",
text = hoursString,
}
local minuteHandleAngle = getMinutesAngle()
local hoursTextPosition = getHoursTextPosition(mousePosition, minuteHandleAngle)
hoursText:topLeft(hoursTextPosition)
hoursText:show()
end
local fadeOutDuration = 0.25
local fadeOutStep = 0.0125
local fadeOutAlphaStep = fadeOutStep / fadeOutDuration
local function fadeOutText()
local currentAlpha = hoursText:alpha()
if currentAlpha > 0 then
hoursText:alpha(currentAlpha - fadeOutAlphaStep)
hs.timer.doAfter(fadeOutStep, fadeOutText)
else
hoursText:hide()
end
end
local hideTextTimer = hs.timer.delayed.new(hideTextDelay, fadeOutText)
local mouseStopTimer = hs.timer.delayed.new(0.025, function()
mousePosition = hs.mouse.absolutePosition()
updateHoursText()
end)
local updateOnMouseMove = hs.eventtap.new({ hs.eventtap.event.types.mouseMoved }, function(event)
if event:getType() == hs.eventtap.event.types.mouseMoved then
mousePosition = hs.mouse.absolutePosition()
updateHoursText()
hoursText:alpha(1)
hideTextTimer:stop()
hideTextTimer:start()
mouseStopTimer:start()
end
return false
end)
updateOnMouseMove:start()
local batteryCheckTimer = hs.timer.new(60, function()
updateHoursText()
end)
batteryCheckTimer:start()
local hideOnKeyDown = hs.eventtap.new({ hs.eventtap.event.types.keyDown, hs.eventtap.event.types.leftMouseDragged },
function(event)
hoursText:hide()
return false
end)
hideOnKeyDown:start()
return { updateOnMouseMove, hideOnKeyDown }
end
local mouseEventTap = displayTimeNearMouse()
function screenWatcherCallback(eventType)
if eventType == hs.caffeinate.watcher.screensDidUnlock then
if not mouseEventTap:isEnabled() then
mouseEventTap:start()
end
elseif eventType == hs.caffeinate.watcher.screensDidLock then
if mouseEventTap:isEnabled() then
mouseEventTap:stop()
end
end
end
local screenWatcher = hs.caffeinate.watcher.new(screenWatcherCallback)
screenWatcher:start()