My Hammerspoon config

init.lua

local math = require("hs.math")

currentSpeech = nil

mouseCircle = nil
mouseCircleTimer = nil

function mouseHighlight()
	-- Delete an existing highlight if it exists
	if mouseCircle then
		mouseCircle:delete()
		if mouseCircleTimer then
			mouseCircleTimer:stop()
		end
	end
	-- Get the current co-ordinates of the mouse pointer
	mousepoint = hs.mouse.getAbsolutePosition()
	-- Prepare a big red circle around the mouse pointer
	mouseCircle = hs.drawing.circle(hs.geometry.rect(mousepoint.x-40, mousepoint.y-40, 80, 80))
	mouseCircle:setStrokeColor({["red"]=1,["blue"]=0,["green"]=0,["alpha"]=1})
	mouseCircle:setFill(false)
	mouseCircle:setStrokeWidth(5)
	mouseCircle:show()

	-- Set a timer to delete the circle after 3 seconds
	mouseCircleTimer = hs.timer.doAfter(3, function()
		mouseCircle:delete()
		mouseCircle = nil
	end)
end
hs.hotkey.bind({"cmd","alt","shift"}, "4", mouseHighlight)

function compressImageCommand()
	image = hs.pasteboard.readImage()
	if image then
		hs.alert.show("IMAGE")
		tempDir = hs.fs.temporaryDirectory()
		imagePath = tempDir .. hs.host.uuid() .. ".png"
		hs.alert.show(imagePath)
		
		image:saveToFile(imagePath)
		byteSize = hs.fs.attributes(imagePath, "size")
		hs.alert.show(byteSize .. " bytes")
		
		-- Open ImageOptim
		hs.urlevent.openURLWithBundle(hs.fs.urlFromPath(imagePath), "net.pornel.ImageOptim")		
	end
	
	-- hs.notify.new(nil, {
	--	contentImage=image
	-- }):send()
end

function resizeImageCommand()
	image = hs.pasteboard.readImage()
	if image then
		-- fullSize = image:size()
		
		button, newSizeInput = hs.dialog.textPrompt("Enter size", "Resize to the specified size.", "", "OK", "Cancel")
		if button == "Cancel" then
			return
		end
		
		newSize = math.tointeger(tonumber(newSizeInput))
		if newSize > 0 then
			hs.alert.show("New size: " .. newSize)
			image = image:copy():size({ w = newSize, h = newSize })
			imageURLEncoded = image:encodeAsURLString()
			image = hs.image.imageFromURL(imageURLEncoded)
			hs.pasteboard.clearContents()
			hs.pasteboard.writeObjects(image)
		end
	end
end

function copyImageAsURL()
	image = hs.pasteboard.readImage()
	if image then
		imageURLEncoded = image:encodeAsURLString()
		hs.pasteboard.clearContents()
		hs.pasteboard.writeObjects(imageURLEncoded)
	end
end

function copyEnteredText()
	defaultText = hs.pasteboard.readString()
	button, text = hs.dialog.textPrompt("Enter text", "Text will be copied to the clipboard.", defaultText, "Copy", "Cancel")
	if button == "Copy" then
		hs.pasteboard.writeObjects(text)
	end
end

function copyEnteredJavaScript()
	defaultSource = hs.pasteboard.readString()
	button, source = hs.dialog.textPrompt("Enter JavaScript", "Code will be run and its result copied to the clipboard.", defaultSource, "Copy Result", "Cancel")
	if button == "Copy Result" then
		success, result, descriptor = hs.osascript.javascript(source)
		if success then
			hs.alert.show(hs.inspect(result))
			hs.alert.show(hs.inspect(descriptor))
			-- asJSON = hs.json.encode(result, true)
			if type(result) == "number" then
				hs.pasteboard.writeObjects("" .. result)
			else
				hs.pasteboard.writeObjects(descriptor)
			end
		else
			hs.alert.show("ERROR")
			hs.alert.show(hs.inspect(descriptor))
		end
	end
end

function copyFormattedJSON()
	text = hs.pasteboard.readString()
	json = hs.json.decode(text)
	if json then
		hs.alert.show("Valid JSON")
		encoded = hs.json.encode(json, true)
		hs.pasteboard.writeObjects(encoded)
	end
end

function copyUnformattedText()
	text = hs.pasteboard.readString()
	if text then
		hs.pasteboard.clearContents()
		hs.pasteboard.writeObjects(text)
	end
end

function copyAlphanumericText()
	text = hs.pasteboard.readString()
	if text then
		hs.pasteboard.clearContents()
		text = text:gsub('[^0-9a-zA-Z]', "")
		hs.pasteboard.writeObjects(text)
	end
end

function copyUTF8Length()
	text = hs.pasteboard.readString()
	if text then
		hs.pasteboard.clearContents()
		hs.pasteboard.writeObjects(text:len())
	end
end

function copyBase64Encoded()
	text = hs.pasteboard.readString()
	if text then
		hs.pasteboard.writeObjects(hs.base64.encode(text))
	end
end

function copyBase64Decoded()
	text = hs.pasteboard.readString()
	if text then
		hs.pasteboard.writeObjects(hs.base64.decode(text))
	end
end

function copySHA256Digest()
	text = hs.pasteboard.readString()
	if text then
		hs.pasteboard.writeObjects(hs.hash.SHA256(text))
	end
end

function stopSpeaking()
	if currentSpeech then
		currentSpeech:stop()
		currentSpeech = nil
	end
end

function speakText(text)
	stopSpeaking()
	
	currentSpeech = hs.speech.new()
	currentSpeech:speak(text)
end

function showClipboardMenu()
	stopSpeaking()
	
	menubar = hs.menubar.new(false)
	menubar:setMenu(function()
		menuItems = {}
		
		text = hs.pasteboard.readString()
		if text then
			table.insert(menuItems, { title = text, disabled = true })
			-- table.insert(menuItems, { title = "-" })
			table.insert(menuItems, { title = "Speak…", fn = function() speakText(text) end })
			table.insert(menuItems, { title = "Remove Formatting", fn = copyUnformattedText })
			table.insert(menuItems, { title = "Remove Non-Alphanumeric", fn = copyAlphanumericText })
			table.insert(menuItems, { title = "UTF-8 Length: " .. text:len(), fn = copyUTF8Length })
			table.insert(menuItems, { title = "SHA256: " .. hs.hash.SHA256(text), fn = copySHA256Digest })
			-- table.insert(menuItems, { title = "-" })
			--table.insert(menuItems, { title = "Format JSON", fn = copyFormattedJSON })
			table.insert(menuItems, { title = "Encode to Base64", fn = copyBase64Encoded })
			table.insert(menuItems, { title = "Decode from Base64", fn = copyBase64Decoded })
			-- table.insert(menuItems, { title = "Copy SHA256 Digest", fn = copySHA256Digest })
			table.insert(menuItems, { title = "-" })
		end
		
		image = hs.pasteboard.readImage()
		if image then
			fullSize = image:size()
			-- hs.alert.show("Image " .. math.tointeger(hs.inspect(fullSize["h"])))
			-- hs.alert.show(hs.inspect(fullSize["h"]))
			resizedImage = image:copy():size({ w = 500, h = 500 })
			if resizedImage then
				table.insert(menuItems, { title = "Image " .. fullSize["w"] .. " × " .. fullSize["h"], disabled = true })
				table.insert(menuItems, { title = "", image = resizedImage })
				table.insert(menuItems, { title = "Optimize Image…", fn = compressImageCommand })
				table.insert(menuItems, { title = "Resize Image…", fn = resizeImageCommand })
				table.insert(menuItems, { title = "Copy as data:image/png", fn = copyImageAsURL })
				table.insert(menuItems, { title = "-" })
			end
		end
		
		table.insert(menuItems, { title = "Copy Text…", fn = copyEnteredText })
		table.insert(menuItems, { title = "Copy Result of JavaScript…", fn = copyEnteredJavaScript })
		table.insert(menuItems, { title = "Copy Random UUID", fn = function() hs.pasteboard.writeObjects(hs.host.uuid()) end })
		table.insert(menuItems, { title = "-" })
		table.insert(menuItems, { title = hs.inspect(hs.pasteboard.typesAvailable()), disabled = true })
		
		return menuItems
	end)
	menubar:popupMenu(hs.mouse.absolutePosition())
end
hs.hotkey.bind({"control"}, "escape", showClipboardMenu)