weareopensource/Swift

/**
 * Dependencies
 */

import UIKit

/**
 * extension
 */

extension UILabel {
    /**
    * @desc set new spacing for uilabel, line and letters
    * @param {CGFloat} lineSpacing,
    * @param {CGFloat} letterSpacing,
    */
    func setSpacing(lineSpacing: CGFloat = 0.0, letterSpacing: CGFloat = 1.15) {
        if let labelText = text, labelText.count > 0 {
            let paragraphStyle = NSMutableParagraphStyle()
            paragraphStyle.lineSpacing = lineSpacing
            paragraphStyle.lineHeightMultiple = lineSpacing
            let attributedString = NSMutableAttributedString(string: labelText)
            attributedString.addAttribute(NSAttributedString.Key.paragraphStyle, value: paragraphStyle, range: NSRange(location: 0, length: attributedString.length))
            attributedString.addAttribute(NSAttributedString.Key.kern, value: letterSpacing, range: NSRange(location: 0, length: attributedString.length - 1))
            self.attributedText = attributedString
        }
    }

    /**
    * @desc set bold text in uilabel
    * @param {String} regualText,
    * @param {String} boldiText,
    **/
    public func setBold(string: String, bold: String) {
        let attrs = [NSAttributedString.Key.font: UIFont.boldSystemFont(ofSize: font.pointSize)]
        let regularString = NSMutableAttributedString(string: string)
        let range = (string as NSString).range(of: bold)
        regularString.addAttributes(attrs, range: range)
        attributedText = regularString
    }
}