86 lines
3.2 KiB
Swift
86 lines
3.2 KiB
Swift
//
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// Copyright (c) 2020 Open Whisper Systems. All rights reserved.
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//
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import Foundation
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import YYImage
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import Lottie
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@objc
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public class StickerView: NSObject {
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// Never instantiate this class.
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private override init() {}
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static func stickerView(forStickerInfo stickerInfo: StickerInfo,
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dataSource: StickerPackDataSource,
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size: CGFloat? = nil) -> UIView? {
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guard let stickerMetadata = dataSource.metadata(forSticker: stickerInfo) else {
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Logger.warn("Missing sticker metadata.")
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return nil
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}
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return stickerView(stickerInfo: stickerInfo, stickerMetadata: stickerMetadata, size: size)
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}
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static func stickerView(forInstalledStickerInfo stickerInfo: StickerInfo,
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size: CGFloat? = nil) -> UIView? {
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let metadata = StickerManager.installedStickerMetadataWithSneakyTransaction(stickerInfo: stickerInfo)
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guard let stickerMetadata = metadata else {
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Logger.warn("Missing sticker metadata.")
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return nil
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}
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return stickerView(stickerInfo: stickerInfo, stickerMetadata: stickerMetadata, size: size)
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}
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private static func stickerView(stickerInfo: StickerInfo,
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stickerMetadata: StickerMetadata,
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size: CGFloat? = nil) -> UIView? {
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let stickerDataUrl = stickerMetadata.stickerDataUrl
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guard let stickerView = self.stickerView(stickerInfo: stickerInfo,
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stickerType: stickerMetadata.stickerType,
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stickerDataUrl: stickerDataUrl) else {
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owsFailDebug("Could not load sticker for display.")
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return nil
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}
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if let size = size {
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stickerView.autoSetDimensions(to: CGSize(square: size))
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}
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return stickerView
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}
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static func stickerView(stickerInfo: StickerInfo,
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stickerType: StickerType,
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stickerDataUrl: URL) -> UIView? {
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guard NSData.ows_isValidImage(at: stickerDataUrl, mimeType: stickerType.contentType) else {
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owsFailDebug("Invalid sticker.")
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return nil
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}
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let stickerView: UIView
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switch stickerType {
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case .webp, .apng:
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guard let stickerImage = YYImage(contentsOfFile: stickerDataUrl.path) else {
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owsFailDebug("Sticker could not be parsed.")
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return nil
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}
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let yyView = YYAnimatedImageView()
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yyView.alwaysInfiniteLoop = true
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yyView.contentMode = .scaleAspectFit
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yyView.image = stickerImage
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stickerView = yyView
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case .signalLottie:
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let lottieView = Lottie.AnimationView(filePath: stickerDataUrl.path)
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lottieView.contentMode = .scaleAspectFit
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lottieView.animationSpeed = 1
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lottieView.loopMode = .loop
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lottieView.backgroundBehavior = .pause
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lottieView.play()
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stickerView = lottieView
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}
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return stickerView
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}
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}
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