我正在使用下面的代码从UILabel类创建图像并将其存储在文档目录中。我想在macOS中实现相同的目的,但没有找到任何东西,我也从未在macOS App环境中进行过编程。在macOS应用程序中,我尝试使用CGDisplayCreateImage()截取部分屏幕截图,但结果与预期不符。所以我要做的是创建标签并将其作为图像存储在macOS应用程序的本地存储中。

class func imageWith(name: String?) {
    //sizes = [Int]
    sizes.forEach { (value) in
        let frame = CGRect(x: 0, y: 0, width: value, height: value)
        let nameLabel = UILabel(frame: frame)
        nameLabel.textAlignment = .center
        nameLabel.backgroundColor = .black
        nameLabel.textColor = .white
        var fontSize = 25
        if value == 120 {
            fontSize = 50
        } else if value == 180 {
            fontSize = 60
        }
        nameLabel.font = UIFont.boldSystemFont(ofSize: CGFloat(fontSize))
        nameLabel.text = String(name?.prefix(2) ?? "Aa")

        //logic i wanted to port to macos
        UIGraphicsBeginImageContext(frame.size)
        if let currentContext = UIGraphicsGetCurrentContext() {
            nameLabel.layer.render(in: currentContext)
            let nameImage = UIGraphicsGetImageFromCurrentImageContext()

            //function which will save images to documents directory
            saveImageToDocumentDirectory(image: nameImage, name: name ?? "dummy", value: value)
        }
    }
}

最佳答案

可以使用.dataWithPDF(inside:)将任何NSView子类呈现为图像。尝试这个:

let dataOfView = nameLabel.dataWithPDF(inside: nameLabel.bounds)
let imageOfView = NSImage(data: dataOfView)

10-08 14:57