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//
// UIImage+Category.swift
// UniKar
//
// Created by pxh on 2016/12/6.
// Copyright © 2016年 pxh. All rights reserved.
//
import UIKit
import MBProgressHUD
import Photos
import Charts
extension UIImage {
// func accessCameraAuthority() -> Bool
// {
// let authStatus = AVCaptureDevice.authorizationStatus(for: .video)
// if authStatus == .restricted || authStatus == .denied {
// MBProgressHUD.show("请在iPhone的 设置-隐私-相机 中允许访问相机")
// } else if PHPhotoLibrary.authorizationStatus().rawValue == 2 {
// MBProgressHUD.show("请在iPhone的 设置-隐私-相册 中允许访问相册")
// } else {
//
// }
// }
func saveImageToPath(_ name: String) {
if let imageData = self.pngData() {
let imagePath = self.imagePath() + "\(name).png"
try? imageData.write(to: URL(fileURLWithPath: imagePath), options: .atomic)
}
}
class func getImageFromPath(_ name: String)-> UIImage? {
if let image = UIImage(contentsOfFile: NSHomeDirectory() + "/Documents/images/\(name).png") {
return image
} else {
return nil
}
}
private func imagePath() -> String {
let newPath = NSHomeDirectory() + "/Documents/images/"
if !FileManager.default.fileExists(atPath: newPath) {
print(newPath)
try! FileManager.default.createDirectory(atPath: newPath, withIntermediateDirectories: true, attributes: nil)
}
return newPath
}
// private func getDocumentsDirectory() -> URL {
// let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
//
// return paths[0]
// }
func saveImageToPhotoLibrary() {
let img = self
// 判断权限
switch PHPhotoLibrary.authorizationStatus() {
case .authorized:
saveImage(image: img)
case .notDetermined:
PHPhotoLibrary.requestAuthorization { [weak self](status) in
if status == .authorized {
self?.saveImage(image: img)
} else {
print("User denied")
}
}
case .restricted, .denied:
MBProgressHUD.showh("请开启允许访问相册权限")
// if let url = URL.init(string: UIApplication.openSettingsURLString) {
// if UIApplication.shared.canOpenURL(url) {
// UIApplication.shared.openURL(url)
// }
// }
default:
break
}
}
private func saveImage(image: UIImage) {
PHPhotoLibrary.shared().performChanges({
PHAssetChangeRequest.creationRequestForAsset(from: image)
}, completionHandler: { (isSuccess, error) in
DispatchQueue.main.async {
if isSuccess {// 成功
MBProgressHUD.showh("已保存到系统相册")
}
}
})
}
//压缩图片 10k
func compressOriginalImage(_ maxSizeKbytes: CGFloat) -> UIImage? {
var imageData = UIImage.jpegData(self)(compressionQuality: 1.0)
var dataKBytes = CGFloat((imageData?.count)!)/1000.0
var maxQuality: CGFloat = 0.9
var lastData = dataKBytes
while dataKBytes > maxSizeKbytes && maxQuality > 0.01 {
print("压缩图片!")
maxQuality -= 0.01
imageData = UIImage.jpegData(self)(compressionQuality: maxQuality)//UIImageJPEGRepresentation(self, maxQuality)
dataKBytes = CGFloat((imageData?.count)!)/1000.0
if lastData == dataKBytes {
break
} else {
lastData = dataKBytes
}
}
return UIImage.init(data: imageData!)
}
class func getImageWithColor(_ color : UIColor , rect : CGRect)->UIImage{
UIGraphicsBeginImageContext(rect.size)
let context = UIGraphicsGetCurrentContext()
context!.setFillColor(color.cgColor)
let fillRect = CGRect.init(origin: CGPoint.zero, size: rect.size)
context!.fill(fillRect)
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return image!
}
class func maskImageWithMaskrect(maskRect:CGRect,clearRect:CGRect) -> UIImage {
UIGraphicsBeginImageContext(maskRect.size)
let ctx = UIGraphicsGetCurrentContext()
ctx?.setFillColor(UIColor.black.cgColor)
ctx?.setFillColor(red: 0, green: 0, blue: 0, alpha: 0.6)
ctx?.fill(maskRect)
ctx?.clear(clearRect)
let img = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return img!
}
//黑白效果滤镜
func noir() -> UIImage?
{
let imageData = self.pngData()
let inputImage = CoreImage.CIImage(data: imageData!)
let context = CIContext(options:nil)
let filter = CIFilter(name:"CIPhotoEffectNoir")
filter!.setValue(inputImage, forKey: kCIInputImageKey)
if let outputImage = filter!.outputImage {
// let outImage = context.createCGImage(outputImage, fromRect: outputImage.extent)
let outImage = context.createCGImage(outputImage, from: outputImage.extent)
// return UIImage(CGImage: outImage!)
return UIImage.init(cgImage: outImage!)
}
return nil
}
//棕褐色复古滤镜（老照片效果）
func sepiaTone() -> UIImage?
{
let imageData = self.pngData()
let inputImage = CoreImage.CIImage(data: imageData!)
let context = CIContext(options:nil)
let filter = CIFilter(name:"CISepiaTone")
filter!.setValue(inputImage, forKey: kCIInputImageKey)
filter!.setValue(0.8, forKey: "inputIntensity")
if let outputImage = filter!.outputImage {
// let outImage = context.createCGImage(outputImage, fromRect: outputImage.extent)
// return UIImage(CGImage: outImage)
let outImage = context.createCGImage(outputImage, from: outputImage.extent)
return UIImage.init(cgImage: outImage!)
}
return nil
}
//将string转化为二维码
class func createQRForString(qrString: String?, qrImageName: String?) -> UIImage?{
if let sureQRString = qrString{
let stringData = sureQRString.data(using: String.Encoding.utf8, allowLossyConversion: false)
//创建一个二维码的滤镜
let qrFilter = CIFilter(name: "CIQRCodeGenerator")
qrFilter?.setValue(stringData, forKey: "inputMessage")
qrFilter?.setValue("H", forKey: "inputCorrectionLevel")
let qrCIImage = qrFilter?.outputImage
// 创建一个颜色滤镜,黑白色
let colorFilter = CIFilter(name: "CIFalseColor")!
colorFilter.setDefaults()
colorFilter.setValue(qrCIImage, forKey: "inputImage")
colorFilter.setValue(CIColor(red: 0, green: 0, blue: 0), forKey: "inputColor0")
colorFilter.setValue(CIColor(red: 1, green: 1, blue: 1), forKey: "inputColor1")
// 返回二维码image
let codeImage = UIImage(ciImage: (colorFilter.outputImage!.transformed(by: CGAffineTransform(scaleX: 5, y: 5))))
// 中间一般放logo
if let iconImage = UIImage(named: qrImageName!) {
let rect = CGRect(x: 0, y: 0, width: codeImage.size.width, height: codeImage.size.height)
UIGraphicsBeginImageContext(rect.size)
codeImage.draw(in: rect)
let avatarSize = CGSize(width: rect.size.width*0.25, height: rect.size.height*0.25)
let x = (rect.width - avatarSize.width) * 0.5
let y = (rect.height - avatarSize.height) * 0.5
iconImage.draw(in: CGRect(x: x, y: y, width: avatarSize.width, height: avatarSize.height))
let resultImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return resultImage
}
return codeImage
}
return nil
}
}
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