+import Cocoa
+
+class RecordingWindow: NSWindow {
+
+ init() {
+
+ let screens = NSScreen.screens
+ var boundingBox = NSZeroRect
+ for screen in screens {
+ boundingBox = NSUnionRect(boundingBox, screen.frame)
+ }
+
+ super.init(
+ contentRect: boundingBox,
+ styleMask: [.borderless],
+ backing: .buffered,
+ defer: false)
+
+ self.center()
+ self.isMovableByWindowBackground = false
+ self.isMovable = false
+ self.titlebarAppearsTransparent = true
+ self.setFrame(boundingBox, display: true)
+ self.titleVisibility = .hidden
+ self.contentView = RecordingContentView()
+ self.backgroundColor = NSColor(white: 1.0, alpha: 0.001)
+ self.level = .screenSaver
+ self.isOpaque = false
+ self.hasShadow = false
+ self.makeKeyAndOrderFront(nil)
+ self.makeFirstResponder(nil)
+ }
+
+ override func resetCursorRects() {
+ super.resetCursorRects()
+ let cursor = NSCursor.crosshair
+ self.contentView?.addCursorRect(self.contentView!.bounds, cursor: cursor)
+ }
+
+ override var canBecomeKey: Bool {
+ return true
+ }
+
+ override var canBecomeMain: Bool {
+ return true
+ }
+}
+
+class RecordingContentView: NSView {
+
+ var isDrawing = false
+ var isMoving = false
+ var isResizing = false
+ var box: NSRect? = nil
+ var mouseLocation: NSPoint = NSPoint()
+ var origin: NSPoint = NSPoint()
+ var boxOrigin: NSPoint = NSPoint()
+
+ var resizeBox: NSRect? {
+ if let box {
+ return NSRect(x: box.maxX - 5, y: box.minY - 5, width: 10, height: 10)
+ }
+ return nil
+ }
+
+ override func updateTrackingAreas() {
+ super.updateTrackingAreas()
+
+ for trackingArea in self.trackingAreas {
+ self.removeTrackingArea(trackingArea)
+ }
+
+ let options: NSTrackingArea.Options = [.mouseEnteredAndExited, .activeInKeyWindow, .cursorUpdate, .mouseMoved]
+ let trackingArea = NSTrackingArea(rect: self.bounds, options: options, owner: self, userInfo: nil)
+ self.addTrackingArea(trackingArea)
+ }
+
+ override func mouseMoved(with event: NSEvent) {
+
+ self.mouseLocation = self.convert(event.locationInWindow, from: nil)
+
+ if let box {
+ if resizeBox!.contains(mouseLocation) {
+ NSCursor.arrow.set()
+ } else {
+ if box.contains(mouseLocation) {
+ NSCursor.openHand.set()
+ } else {
+ NSCursor.crosshair.set()
+ }
+ }
+ } else {
+ NSCursor.crosshair.set()
+ }
+
+
+ self.setNeedsDisplay(self.bounds)
+ }
+
+ override func mouseDragged(with event: NSEvent) {
+ self.mouseLocation = self.convert(event.locationInWindow, from: nil)
+ if isDrawing {
+ box = NSRect(
+ x: round(min(origin.x, mouseLocation.x)),
+ y: round(min(origin.y, mouseLocation.y)),
+ width: round(abs(mouseLocation.x - origin.x)),
+ height: round(abs(mouseLocation.y - origin.y))
+ )
+ }
+
+ if isMoving && box != nil {
+ NSCursor.closedHand.set()
+ box!.origin = NSPoint(
+ x: self.boxOrigin.x - self.origin.x + self.mouseLocation.x,
+ y: self.boxOrigin.y - self.origin.y + self.mouseLocation.y)
+ }
+ self.setNeedsDisplay(self.bounds)
+ }
+
+ override func cursorUpdate(with event: NSEvent) {
+ NSCursor.crosshair.set()
+ }
+
+ override func hitTest(_ point: NSPoint) -> NSView? {
+ return self
+ }
+
+ override var acceptsFirstResponder: Bool {
+ return true
+ }
+
+ override func mouseDown(with event: NSEvent) {
+ self.origin = self.convert(event.locationInWindow, from: nil)
+ if let box {
+ if box.contains(origin) {
+ isMoving = true
+ self.boxOrigin = NSPoint(x: box.origin.x, y: box.origin.y)
+ return
+ }
+ }
+
+ isDrawing = true
+ }
+
+ override func mouseUp(with event: NSEvent) {
+ isDrawing = false
+ isMoving = false
+ }
+
+ override func draw(_ dirtyRect: NSRect) {
+ NSColor(white: 1.0, alpha: 0.001).setFill()
+ dirtyRect.fill()
+
+ let dashLength: CGFloat = 5.0
+ let lineWidth = 0.5
+
+ if !isDrawing && box == nil {
+ let blackLine = NSBezierPath()
+ blackLine.lineWidth = lineWidth
+ blackLine.setLineDash([dashLength, dashLength], count: 2, phase: 0)
+
+ // Vertical line (Black)
+ blackLine.move(to: NSPoint(x: self.mouseLocation.x, y: NSMinY(self.bounds)))
+ blackLine.line(to: NSPoint(x: self.mouseLocation.x, y: NSMaxY(self.bounds)))
+
+ // Horizontal line (Black)
+ blackLine.move(to: NSPoint(x: NSMinX(self.bounds), y: self.mouseLocation.y))
+ blackLine.line(to: NSPoint(x: NSMaxX(self.bounds), y: self.mouseLocation.y))
+
+ NSColor.black.setStroke()
+ blackLine.stroke()
+
+ let whiteLine = NSBezierPath()
+ whiteLine.lineWidth = lineWidth
+ whiteLine.setLineDash([dashLength, dashLength], count: 2, phase: dashLength)
+
+ // Vertical line (White)
+ whiteLine.move(to: NSPoint(x: self.mouseLocation.x, y: NSMinY(self.bounds)))
+ whiteLine.line(to: NSPoint(x: self.mouseLocation.x, y: NSMaxY(self.bounds)))
+
+ // Horizontal line (White)
+ whiteLine.move(to: NSPoint(x: NSMinX(self.bounds), y: self.mouseLocation.y))
+ whiteLine.line(to: NSPoint(x: NSMaxX(self.bounds), y: self.mouseLocation.y))
+
+ NSColor.white.setStroke()
+ whiteLine.stroke()
+ }
+
+ if let box {
+ let blackBox = NSBezierPath()
+ blackBox.lineWidth = lineWidth
+ blackBox.setLineDash([dashLength, dashLength], count: 2, phase: 0)
+ blackBox.move(to: NSPoint(x: box.minX, y: box.minY))
+ blackBox.line(to: NSPoint(x: box.maxX, y: box.minY))
+ blackBox.line(to: NSPoint(x: box.maxX, y: box.maxY))
+ blackBox.line(to: NSPoint(x: box.minX, y: box.maxY))
+ blackBox.line(to: NSPoint(x: box.minX, y: box.minY))
+ NSColor.black.setStroke()
+ blackBox.stroke()
+
+ let whiteBox = NSBezierPath()
+ whiteBox.lineWidth = lineWidth
+ whiteBox.setLineDash([dashLength, dashLength], count: 2, phase: dashLength)
+ whiteBox.move(to: NSPoint(x: box.minX, y: box.minY))
+ whiteBox.line(to: NSPoint(x: box.maxX, y: box.minY))
+ whiteBox.line(to: NSPoint(x: box.maxX, y: box.maxY))
+ whiteBox.line(to: NSPoint(x: box.minX, y: box.maxY))
+ whiteBox.line(to: NSPoint(x: box.minX, y: box.minY))
+ NSColor.white.setStroke()
+ whiteBox.stroke()
+
+ if let resizeBox {
+ let clearBox = NSBezierPath()
+ clearBox.move(to: NSPoint(x: resizeBox.minX, y: resizeBox.minY))
+ clearBox.line(to: NSPoint(x: resizeBox.maxX, y: resizeBox.minY))
+ clearBox.line(to: NSPoint(x: resizeBox.maxX, y: resizeBox.maxY))
+ clearBox.line(to: NSPoint(x: resizeBox.minX, y: resizeBox.maxY))
+ clearBox.line(to: NSPoint(x: resizeBox.minX, y: resizeBox.minY))
+ NSColor(white: 0, alpha: 0.2).setFill()
+ clearBox.fill()
+ }
+
+ if box.contains(mouseLocation) && !isResizing {
+ return;
+ }
+ }
+
+ // Draw text
+
+ let offset = NSPoint(x: 10, y: 10)
+ let padding = NSPoint(x: 5, y: 2)
+
+ let textAttributes = [
+ NSAttributedString.Key.font: NSFont(name: "Hiragino Mincho ProN", size: 12) ?? NSFont.systemFont(ofSize: 12),
+ NSAttributedString.Key.foregroundColor: NSColor.white,
+ ]
+
+ let string = "\(Int(mouseLocation.x)), \(Int(mouseLocation.y))" as NSString
+ let size = string.size(withAttributes: textAttributes)
+ let rect = NSRect(x: mouseLocation.x + offset.x, y: mouseLocation.y + offset.y, width: size.width + 2 * padding.x, height: size.height + 2 * padding.y)
+ let textRect = NSRect(x: mouseLocation.x + offset.x + padding.x, y: mouseLocation.y + offset.y + padding.y, width: size.width, height: size.height)
+
+ NSColor.black.set()
+ rect.fill()
+
+ string.draw(in: textRect, withAttributes: textAttributes)
+ }
+}