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Merge pull request #98 from boostcampwm-2022/feature_image
이미지 처리 및 캐싱 모듈 수정
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26 changes: 26 additions & 0 deletions
26
SpaceCapsule/SpaceCapsule/Manager/KingReceiver/Extensions/NSCache+subscript.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| // | ||
| // NSCache+.swift | ||
| // SpaceCapsule | ||
| // | ||
| // Created by 장재훈 on 2022/12/10. | ||
| // | ||
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| import Foundation | ||
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| extension NSCache where KeyType == NSString, ObjectType == NSData { | ||
| subscript(_ url: URL) -> NSData? { | ||
| get { | ||
| let key = url.absoluteString as NSString | ||
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| return object(forKey: key) | ||
| } | ||
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| set { | ||
| let key = url.absoluteString as NSString | ||
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| if let newValue { | ||
| setObject(newValue, forKey: key) | ||
| } | ||
| } | ||
| } | ||
| } |
31 changes: 31 additions & 0 deletions
31
SpaceCapsule/SpaceCapsule/Manager/KingReceiver/Extensions/UIImage+resize.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| // | ||
| // UIImage+.swift | ||
| // SpaceCapsule | ||
| // | ||
| // Created by 장재훈 on 2022/12/10. | ||
| // | ||
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| import UIKit.UIImage | ||
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| extension UIImage { | ||
| static func resize(data: Data, to targetSize: CGSize, scale: CGFloat) -> UIImage? { | ||
| let imageSourceOptions = [kCGImageSourceShouldCache: false] as CFDictionary | ||
| guard let imageSource = CGImageSourceCreateWithData(data as CFData, imageSourceOptions) else { | ||
| return nil | ||
| } | ||
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| let maxDimension = max(targetSize.width, targetSize.height) * scale | ||
| let resizingOptions = [ | ||
| kCGImageSourceCreateThumbnailFromImageAlways: true, | ||
| kCGImageSourceShouldCacheImmediately: true, | ||
| kCGImageSourceCreateThumbnailWithTransform: true, | ||
| kCGImageSourceThumbnailMaxPixelSize: maxDimension, | ||
| ] as CFDictionary | ||
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| guard let resizedImage = CGImageSourceCreateThumbnailAtIndex(imageSource, 0, resizingOptions) else { | ||
| return nil | ||
| } | ||
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| return UIImage(cgImage: resizedImage) | ||
| } | ||
| } |
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