89 lines
3.4 KiB
Swift
89 lines
3.4 KiB
Swift
/*
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The MIT License (MIT)
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Copyright (c) 2015-present Badoo Trading Limited.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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import PhotosUI
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protocol PhotosInputDataProviderProtocol {
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var count: Int { get }
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func requestPreviewImageAtIndex(index: Int, targetSize: CGSize, completion: (UIImage) -> Void) -> Int32
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func requestFullImageAtIndex(index: Int, completion: (UIImage) -> Void)
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func cancelPreviewImageRequest(requestID: Int32)
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}
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class PhotosInputPlaceholderDataProvider: PhotosInputDataProviderProtocol {
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var count: Int {
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return 5
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}
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func requestPreviewImageAtIndex(index: Int, targetSize: CGSize, completion: (UIImage) -> Void) -> Int32 {
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return 0
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}
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func requestFullImageAtIndex(index: Int, completion: (UIImage) -> Void) {
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}
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func cancelPreviewImageRequest(requestID: Int32) {
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}
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}
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class PhotosInputDataProvider: PhotosInputDataProviderProtocol {
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private var imageManager = PHCachingImageManager()
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private var fetchResult: PHFetchResult!
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init() {
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let options = PHFetchOptions()
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options.sortDescriptors = [ NSSortDescriptor(key: "modificationDate", ascending: false) ]
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self.fetchResult = PHAsset.fetchAssetsWithMediaType(.Image, options: options)
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}
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var count: Int {
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return self.fetchResult.count
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}
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func requestPreviewImageAtIndex(index: Int, targetSize: CGSize, completion: (UIImage) -> Void) -> Int32 {
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assert(index >= 0 && index < self.fetchResult.count, "Index out of bounds")
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let asset = self.fetchResult[index] as! PHAsset
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let options = PHImageRequestOptions()
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options.deliveryMode = .HighQualityFormat
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return self.imageManager.requestImageForAsset(asset, targetSize: targetSize, contentMode: .AspectFill, options: options) { (image, info) in
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if let image = image {
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completion(image)
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}
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}
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}
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func cancelPreviewImageRequest(requestID: Int32) {
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self.imageManager.cancelImageRequest(requestID)
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}
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func requestFullImageAtIndex(index: Int, completion: (UIImage) -> Void) {
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assert(index >= 0 && index < self.fetchResult.count, "Index out of bounds")
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let asset = self.fetchResult[index] as! PHAsset
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self.imageManager.requestImageDataForAsset(asset, options: .None) { (data, dataUTI, orientation, info) -> Void in
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if let data = data, image = UIImage(data: data) {
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completion(image)
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}
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}
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}
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}
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