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89 lines
2.9 KiB
89 lines
2.9 KiB
//
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// LottieBundleImageProvider.swift
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// lottie-swift
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//
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// Created by Brandon Withrow on 1/25/19.
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//
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import CoreGraphics
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import Foundation
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#if os(iOS) || os(tvOS) || os(watchOS) || targetEnvironment(macCatalyst)
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import UIKit
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/// An `AnimationImageProvider` that provides images by name from a specific bundle.
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/// The BundleImageProvider is initialized with a bundle and an optional searchPath.
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public class BundleImageProvider: AnimationImageProvider {
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// MARK: Lifecycle
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/// Initializes an image provider with a bundle and an optional subpath.
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///
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/// Provides images for an animation from a bundle. Additionally the provider can
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/// search a specific subpath for the images.
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///
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/// - Parameter bundle: The bundle containing images for the provider.
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/// - Parameter searchPath: The subpath is a path within the bundle to search for image assets.
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///
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public init(bundle: Bundle, searchPath: String?) {
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self.bundle = bundle
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self.searchPath = searchPath
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}
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// MARK: Public
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public func imageForAsset(asset: ImageAsset) -> CGImage? {
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if
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let data = Data(imageAsset: asset),
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let image = UIImage(data: data)
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{
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return image.cgImage
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}
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let imagePath: String?
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/// Try to find the image in the bundle.
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if let searchPath = searchPath {
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/// Search in the provided search path for the image
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var directoryPath = URL(fileURLWithPath: searchPath)
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directoryPath.appendPathComponent(asset.directory)
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if let path = bundle.path(forResource: asset.name, ofType: nil, inDirectory: directoryPath.path) {
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/// First search for the image in the asset provided sub directory.
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imagePath = path
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} else if let path = bundle.path(forResource: asset.name, ofType: nil, inDirectory: searchPath) {
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/// Try finding the image in the search path.
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imagePath = path
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} else {
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imagePath = bundle.path(forResource: asset.name, ofType: nil)
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}
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} else {
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if let path = bundle.path(forResource: asset.name, ofType: nil, inDirectory: asset.directory) {
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/// First search for the image in the asset provided sub directory.
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imagePath = path
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} else {
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/// First search for the image in bundle.
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imagePath = bundle.path(forResource: asset.name, ofType: nil)
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}
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}
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if imagePath == nil {
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guard let image = UIImage(named: asset.name, in: bundle, compatibleWith: nil) else {
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LottieLogger.shared.warn("Could not find image \"\(asset.name)\" in bundle")
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return nil
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}
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return image.cgImage
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}
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guard let foundPath = imagePath, let image = UIImage(contentsOfFile: foundPath) else {
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/// No image found.
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LottieLogger.shared.warn("Could not find image \"\(asset.name)\" in bundle")
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return nil
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}
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return image.cgImage
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}
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// MARK: Internal
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let bundle: Bundle
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let searchPath: String?
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}
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#endif
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