draw rectangle over current drawing area

.swift

    func drawDoodlingRect(context: CGContext?) {
        let inset = 5
        
        markerColor.setStroke()
        context!.setLineWidth(1.0)
        context!.setLineCap(.round)
        UIColor.clear.setFill()
        
        ocrImageRect = CGRect(x: minX - inset, y: minY - inset, width: (maxX-minX) + inset*2, height: (maxY-minY) + 2*inset)
        context!.addRect(ocrImageRect!)
        context!.strokePath()
        
        drawTextRect(context: context, rect: ocrImageRect!)
        
        image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        
        fetchOCRText()
        
        resetDoodleRect()
    }

    func drawTextRect(context: CGContext?, rect: CGRect) {
        UIColor.lightGray.setStroke()
        currentTextRect = CGRect(x: rect.origin.x, y: rect.origin.y + rect.height, width: rect.width, height: 15)
        context!.addRect(currentTextRect!)
        context!.strokePath()
    }