//
//  SPGradientLabel.swift
//  MoviaBox
//
//  Created by 佳尔 on 2025/4/27.
//

import UIKit

class SPGradientLabel: UILabel {
    

    
    private(set) var gradientLayer: CAGradientLayer = {
        // 创建渐变层
        let gradient = CAGradientLayer()
        gradient.colors = [
            UIColor.red.cgColor,
            UIColor.blue.cgColor
        ]
        gradient.startPoint = CGPoint(x: 0.5, y: 0)
        gradient.endPoint = CGPoint(x: 0.5, y: 1)
        gradient.locations = [0, 1]
        return gradient
    }()
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        layer.addSublayer(gradientLayer)
        
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        
        gradientLayer.frame = bounds
        
        // 创建一个文字图层
        let textLayer = CATextLayer()
        textLayer.string = attributedText ?? NSAttributedString(string: text ?? "")
        textLayer.frame = bounds
        textLayer.alignmentMode = .center
        textLayer.contentsScale = UIScreen.main.scale
        
        gradientLayer.mask = textLayer
        
    }
    
}