Xcode 8/Swift 3 - 类型'CGColorRenderingIntent'没有成员'RenderingIntentDefault'

Question

我已经成功地将许多错误转换为Swift 3，除了最后一行。它适用于Xcode 7，但不适用于Xcode 8.

值得一提的是，Xcode 7在CGColorRenderingIntent上有文档，但Xcode 8没有。

类型 'CGColorRenderingIntent' 没有成员 'RenderingIntentDefault'

代码我的工作：

import CoreImage 

// omitted code 

public func imageFromPixels(pixels: ([Pixel], width: Int, height: Int)) -> CIImage { 
let bitsPerComponent = 8 
let bitsPerPixel = 32 
let rgbColorSpace = CGColorSpaceCreateDeviceRGB() 
let bitmapInfo = CGBitmapInfo(rawValue: CGImageAlphaInfo.premultipliedLast.rawValue) // alpha is last 
let providerRef = CGDataProvider(data: NSData(bytes: pixels.0, length: pixels.0.count * sizeof(Pixel))) 
let image = CGImageCreate(pixels.1, pixels.2, bitsPerComponent, bitsPerPixel, pixels.1 * sizeof(Pixel), rgbColorSpace, bitmapInfo, providerRef!, nil, true, CGColorRenderingIntent.RenderingIntentDefault) 
return CIImage(CGImage: image!) 
} 

苹果文档：

enum CGColorRenderingIntent : Int32 { 
case RenderingIntentDefault 
case RenderingIntentAbsoluteColorimetric 
case RenderingIntentRelativeColorimetric 
case RenderingIntentPerceptual 
case RenderingIntentSaturation 
} 

更新的代码：

在符号

let image = CGImage(width: pixels.1, 
        height: pixels.2, 
        bitsPerComponent: bitsPerComponent, 
        bitsPerPixel: bitsPerPixel, 
        bytesPerRow: pixels.1 * sizeof(Pixel), 
        space: rgbColorSpace, 
        bitmapInfo: bitmapInfo, 
        provider: providerRef!, 
        decode: nil, 
        shouldInterpolate: true, 
        intent: .defaultIntent) 

return CGImage(CGImage: image!) // Incorrect argument label in call (have 'CGImage:', expected 'copy:') 

Answer 1

⌘单击，你会看到

public enum CGColorRenderingIntent : Int32 { 

    case defaultIntent 
    case absoluteColorimetric 
    case relativeColorimetric 
    case perceptual 
    case saturation 
} 

所以这是

let image = CGImage(width: pixels.1, 
        height: pixels.2, 
     bitsPerComponent: bitsPerComponent, 
      bitsPerPixel: bitsPerPixel, 
       bytesPerRow: pixels.1 * sizeof(Pixel), 
        space: rgbColorSpace, 
       bitmapInfo: bitmapInfo, 
       provider: providerRef!, 
        decode: nil, 
     shouldInterpolate: true, 
        intent: .defaultIntent) 

return CIImage(cgImage: image!) 

的CGImage和CIImage连初始化已更改。