forked from shadowfacts/Tusker
Show BlurHash previews of attachments
This commit is contained in:
parent
e44ae29775
commit
9534f19262
GPG Key ID:
94A5AB95422746E5
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@ -17,6 +17,7 @@ public class Attachment: Codable {
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public let textURL: URL?
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public let meta: Metadata?
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public let description: String?
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public let blurHash: String?
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public static func update(_ attachment: Attachment, focus: (Float, Float)?, description: String?) -> Request<Attachment> {
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return Request<Attachment>(method: .put, path: "/api/v1/media/\(attachment.id)", body: .formData([
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@ -35,6 +36,7 @@ public class Attachment: Codable {
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self.textURL = try? container.decode(URL?.self, forKey: .textURL)
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self.meta = try? container.decode(Metadata?.self, forKey: .meta)
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self.description = try? container.decode(String?.self, forKey: .description)
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self.blurHash = try? container.decode(String?.self, forKey: .blurHash)
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}
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private enum CodingKeys: String, CodingKey {
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@ -46,6 +48,7 @@ public class Attachment: Codable {
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case textURL = "text_url"
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case meta
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case description
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case blurHash = "blurhash"
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}
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}
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@ -60,7 +63,7 @@ extension Attachment {
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}
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extension Attachment {
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public class Metadata: Codable {
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public struct Metadata: Codable {
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public let length: String?
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public let duration: Float?
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public let audioEncoding: String?
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@ -91,7 +94,7 @@ extension Attachment {
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}
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}
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public class ImageMetadata: Codable {
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public struct ImageMetadata: Codable {
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public let width: Int?
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public let height: Int?
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public let size: String?
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@ -169,6 +169,7 @@
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D67895BC24671E6D00D4CD9E /* PKDrawing+Render.swift in Sources */ = {isa = PBXBuildFile; fileRef = D67895BB24671E6D00D4CD9E /* PKDrawing+Render.swift */; };
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D67895C0246870DE00D4CD9E /* LocalAccountAvatarView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D67895BF246870DE00D4CD9E /* LocalAccountAvatarView.swift */; };
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D679C09F215850EF00DA27FE /* XCBActions.swift in Sources */ = {isa = PBXBuildFile; fileRef = D679C09E215850EF00DA27FE /* XCBActions.swift */; };
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D67B506D250B291200FAECFB /* BlurHashDecode.swift in Sources */ = {isa = PBXBuildFile; fileRef = D67B506C250B291200FAECFB /* BlurHashDecode.swift */; };
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D67C57AD21E265FC00C3118B /* LargeAccountDetailView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D67C57AC21E265FC00C3118B /* LargeAccountDetailView.swift */; };
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D67C57AF21E28EAD00C3118B /* Array+Uniques.swift in Sources */ = {isa = PBXBuildFile; fileRef = D67C57AE21E28EAD00C3118B /* Array+Uniques.swift */; };
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D67C57B221E28FAD00C3118B /* ComposeStatusReplyView.xib in Resources */ = {isa = PBXBuildFile; fileRef = D67C57B121E28FAD00C3118B /* ComposeStatusReplyView.xib */; };
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@ -494,6 +495,7 @@
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D67895BB24671E6D00D4CD9E /* PKDrawing+Render.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "PKDrawing+Render.swift"; sourceTree = "<group>"; };
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D67895BF246870DE00D4CD9E /* LocalAccountAvatarView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LocalAccountAvatarView.swift; sourceTree = "<group>"; };
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D679C09E215850EF00DA27FE /* XCBActions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = XCBActions.swift; sourceTree = "<group>"; };
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D67B506C250B291200FAECFB /* BlurHashDecode.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BlurHashDecode.swift; sourceTree = "<group>"; };
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D67C57AC21E265FC00C3118B /* LargeAccountDetailView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LargeAccountDetailView.swift; sourceTree = "<group>"; };
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D67C57AE21E28EAD00C3118B /* Array+Uniques.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Array+Uniques.swift"; sourceTree = "<group>"; };
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D67C57B121E28FAD00C3118B /* ComposeStatusReplyView.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = ComposeStatusReplyView.xib; sourceTree = "<group>"; };
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@ -1119,6 +1121,14 @@
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path = XCallbackURL;
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sourceTree = "<group>";
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};
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D67B506B250B28FF00FAECFB /* Vendor */ = {
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isa = PBXGroup;
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children = (
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D67B506C250B291200FAECFB /* BlurHashDecode.swift */,
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);
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path = Vendor;
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sourceTree = "<group>";
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};
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D67C57A721E2649B00C3118B /* Account Detail */ = {
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isa = PBXGroup;
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children = (
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@ -1337,6 +1347,7 @@
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D64D8CA82463B494006B0BAA /* CachedDictionary.swift */,
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D60E2F2B24423EAD005F8713 /* LazilyDecoding.swift */,
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D6CA6A91249FAD8900AD45C1 /* AudioSessionHelper.swift */,
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D67B506B250B28FF00FAECFB /* Vendor */,
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D6F1F84E2193B9BE00F5FE67 /* Caching */,
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D6757A7A2157E00100721E32 /* XCallbackURL */,
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D62D241E217AA46B005076CC /* Shortcuts */,
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@ -1800,6 +1811,7 @@
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D6B4A4FF2506B81A000C81C1 /* AccountDisplayNameLabel.swift in Sources */,
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D67C57B421E2910700C3118B /* ComposeStatusReplyView.swift in Sources */,
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D6B053A623BD2D0C00A066FA /* AssetCollectionViewController.swift in Sources */,
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D67B506D250B291200FAECFB /* BlurHashDecode.swift in Sources */,
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D62275A024F1677200B82A16 /* ComposeHostingController.swift in Sources */,
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04DACE8E212CC7CC009840C4 /* ImageCache.swift in Sources */,
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D627FF7B217E951500CC0648 /* DraftsTableViewController.swift in Sources */,
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@ -77,6 +77,7 @@ class GalleryViewController: UIPageViewController, UIPageViewControllerDataSourc
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case .image:
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let vc = LoadingLargeImageViewController(attachment: attachment)
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vc.shrinkGestureEnabled = false
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vc.animationSourceView = sourceViews[index]
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return vc
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case .video, .audio:
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let vc = GalleryPlayerViewController()
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@ -31,7 +31,12 @@ class LargeImageViewController: UIViewController, UIScrollViewDelegate, LargeIma
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@IBOutlet weak var bottomControlsView: UIView!
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@IBOutlet weak var descriptionLabel: UILabel!
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var contentView: ContentView
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var contentView: ContentView {
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didSet {
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oldValue.removeFromSuperview()
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setupContentView()
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}
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}
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var contentViewLeadingConstraint: NSLayoutConstraint!
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var contentViewTopConstraint: NSLayoutConstraint!
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@ -76,14 +81,7 @@ class LargeImageViewController: UIViewController, UIScrollViewDelegate, LargeIma
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override func viewDidLoad() {
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super.viewDidLoad()
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contentView.translatesAutoresizingMaskIntoConstraints = false
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scrollView.addSubview(contentView)
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contentViewLeadingConstraint = contentView.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor)
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contentViewTopConstraint = contentView.topAnchor.constraint(equalTo: scrollView.topAnchor)
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NSLayoutConstraint.activate([
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contentViewLeadingConstraint,
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contentViewTopConstraint,
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])
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setupContentView()
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setControlsVisible(initialControlsVisible, animated: false)
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shareButton.isEnabled = !contentView.activityItemsForSharing.isEmpty
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@ -107,6 +105,17 @@ class LargeImageViewController: UIViewController, UIScrollViewDelegate, LargeIma
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view.addGestureRecognizer(doubleTap)
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}
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private func setupContentView() {
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contentView.translatesAutoresizingMaskIntoConstraints = false
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scrollView.addSubview(contentView)
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contentViewLeadingConstraint = contentView.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor)
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contentViewTopConstraint = contentView.topAnchor.constraint(equalTo: scrollView.topAnchor)
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NSLayoutConstraint.activate([
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contentViewLeadingConstraint,
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contentViewTopConstraint,
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])
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}
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override func viewDidLayoutSubviews() {
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super.viewDidLayoutSubviews()
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@ -10,14 +10,16 @@ import Pachyderm
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class LoadingLargeImageViewController: UIViewController, LargeImageAnimatableViewController {
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private var attachment: Attachment?
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let url: URL
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let cache: ImageCache
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let imageDescription: String?
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var largeImageVC: LargeImageViewController?
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var loadingVC: LoadingViewController?
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private(set) var loaded = false
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private(set) var largeImageVC: LargeImageViewController?
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private var loadingVC: LoadingViewController?
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var imageRequest: ImageCache.Request?
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private var imageRequest: ImageCache.Request?
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private var initialControlsVisible: Bool = true
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var controlsVisible: Bool {
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@ -70,6 +72,7 @@ class LoadingLargeImageViewController: UIViewController, LargeImageAnimatableVie
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convenience init(attachment: Attachment) {
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self.init(url: attachment.url, cache: .attachments, imageDescription: attachment.description)
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self.attachment = attachment
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}
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required init?(coder: NSCoder) {
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@ -85,6 +88,8 @@ class LoadingLargeImageViewController: UIViewController, LargeImageAnimatableVie
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if let data = cache.get(url) {
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createLargeImage(data: data)
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} else {
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createPreview()
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loadingVC = LoadingViewController()
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embedChild(loadingVC!)
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imageRequest = cache.get(url) { [weak self] (data) in
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@ -110,15 +115,32 @@ class LoadingLargeImageViewController: UIViewController, LargeImageAnimatableVie
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}
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}
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func createLargeImage(data: Data) {
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private func createLargeImage(data: Data) {
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guard !loaded else { return }
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loaded = true
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guard let image = UIImage(data: data) else { return }
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let gifData = url.pathExtension == "gif" ? data : nil
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createLargeImage(image: image, gifData: gifData)
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}
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private func createLargeImage(image: UIImage, gifData: Data?) {
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let imageView = LargeImageImageContentView(image: image, gifData: gifData)
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largeImageVC = LargeImageViewController(contentView: imageView, description: imageDescription, sourceView: animationSourceView)
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largeImageVC!.initialControlsVisible = initialControlsVisible
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largeImageVC!.shrinkGestureEnabled = false
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embedChild(largeImageVC!)
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if let existing = largeImageVC {
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existing.contentView = imageView
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} else {
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largeImageVC = LargeImageViewController(contentView: imageView, description: imageDescription, sourceView: animationSourceView)
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largeImageVC!.initialControlsVisible = initialControlsVisible
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largeImageVC!.shrinkGestureEnabled = false
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embedChild(largeImageVC!)
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}
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}
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private func createPreview() {
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guard !self.loaded,
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let image = animationSourceView?.image else { return }
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self.createLargeImage(image: image, gifData: nil)
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}
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}
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@ -0,0 +1,148 @@
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/// BlurHash reference decoder implementation.
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/// From https://github.com/woltapp/blurhash/blob/b23214ddcab803fe1ec9a3e6b20558caf33a23a5/Swift/BlurHashDecode.swift
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import UIKit
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extension UIImage {
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public convenience init?(blurHash: String, size: CGSize, punch: Float = 1) {
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guard blurHash.count >= 6 else { return nil }
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let sizeFlag = String(blurHash[0]).decode83()
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let numY = (sizeFlag / 9) + 1
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let numX = (sizeFlag % 9) + 1
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let quantisedMaximumValue = String(blurHash[1]).decode83()
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let maximumValue = Float(quantisedMaximumValue + 1) / 166
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guard blurHash.count == 4 + 2 * numX * numY else { return nil }
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let colours: [(Float, Float, Float)] = (0 ..< numX * numY).map { i in
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if i == 0 {
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let value = String(blurHash[2 ..< 6]).decode83()
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return decodeDC(value)
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} else {
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let value = String(blurHash[4 + i * 2 ..< 4 + i * 2 + 2]).decode83()
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return decodeAC(value, maximumValue: maximumValue * punch)
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}
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}
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let width = Int(size.width)
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let height = Int(size.height)
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let bytesPerRow = width * 3
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guard let data = CFDataCreateMutable(kCFAllocatorDefault, bytesPerRow * height) else { return nil }
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CFDataSetLength(data, bytesPerRow * height)
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guard let pixels = CFDataGetMutableBytePtr(data) else { return nil }
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for y in 0 ..< height {
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for x in 0 ..< width {
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var r: Float = 0
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var g: Float = 0
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var b: Float = 0
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for j in 0 ..< numY {
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for i in 0 ..< numX {
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let basis = cos(Float.pi * Float(x) * Float(i) / Float(width)) * cos(Float.pi * Float(y) * Float(j) / Float(height))
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let colour = colours[i + j * numX]
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r += colour.0 * basis
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g += colour.1 * basis
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b += colour.2 * basis
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}
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}
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let intR = UInt8(linearTosRGB(r))
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let intG = UInt8(linearTosRGB(g))
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let intB = UInt8(linearTosRGB(b))
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pixels[3 * x + 0 + y * bytesPerRow] = intR
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pixels[3 * x + 1 + y * bytesPerRow] = intG
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pixels[3 * x + 2 + y * bytesPerRow] = intB
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}
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}
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let bitmapInfo = CGBitmapInfo(rawValue: CGImageAlphaInfo.none.rawValue)
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guard let provider = CGDataProvider(data: data) else { return nil }
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guard let cgImage = CGImage(width: width, height: height, bitsPerComponent: 8, bitsPerPixel: 24, bytesPerRow: bytesPerRow,
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space: CGColorSpaceCreateDeviceRGB(), bitmapInfo: bitmapInfo, provider: provider, decode: nil, shouldInterpolate: true, intent: .defaultIntent) else { return nil }
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self.init(cgImage: cgImage)
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}
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}
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private func decodeDC(_ value: Int) -> (Float, Float, Float) {
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let intR = value >> 16
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let intG = (value >> 8) & 255
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let intB = value & 255
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return (sRGBToLinear(intR), sRGBToLinear(intG), sRGBToLinear(intB))
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}
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private func decodeAC(_ value: Int, maximumValue: Float) -> (Float, Float, Float) {
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let quantR = value / (19 * 19)
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let quantG = (value / 19) % 19
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let quantB = value % 19
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let rgb = (
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signPow((Float(quantR) - 9) / 9, 2) * maximumValue,
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signPow((Float(quantG) - 9) / 9, 2) * maximumValue,
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signPow((Float(quantB) - 9) / 9, 2) * maximumValue
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)
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return rgb
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}
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private func signPow(_ value: Float, _ exp: Float) -> Float {
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return copysign(pow(abs(value), exp), value)
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}
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private func linearTosRGB(_ value: Float) -> Int {
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let v = max(0, min(1, value))
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if v <= 0.0031308 { return Int(v * 12.92 * 255 + 0.5) }
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else { return Int((1.055 * pow(v, 1 / 2.4) - 0.055) * 255 + 0.5) }
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}
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private func sRGBToLinear<Type: BinaryInteger>(_ value: Type) -> Float {
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let v = Float(Int64(value)) / 255
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if v <= 0.04045 { return v / 12.92 }
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else { return pow((v + 0.055) / 1.055, 2.4) }
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}
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private let encodeCharacters: [String] = {
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return "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz#$%*+,-.:;=?@[]^_{|}~".map { String($0) }
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}()
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private let decodeCharacters: [String: Int] = {
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var dict: [String: Int] = [:]
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for (index, character) in encodeCharacters.enumerated() {
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dict[character] = index
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}
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return dict
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}()
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private extension String {
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func decode83() -> Int {
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var value: Int = 0
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for character in self {
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if let digit = decodeCharacters[String(character)] {
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value = value * 83 + digit
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}
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}
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return value
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}
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}
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private extension String {
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subscript (offset: Int) -> Character {
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return self[index(startIndex, offsetBy: offset)]
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}
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subscript (bounds: CountableClosedRange<Int>) -> Substring {
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let start = index(startIndex, offsetBy: bounds.lowerBound)
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let end = index(startIndex, offsetBy: bounds.upperBound)
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return self[start...end]
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}
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subscript (bounds: CountableRange<Int>) -> Substring {
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let start = index(startIndex, offsetBy: bounds.lowerBound)
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let end = index(startIndex, offsetBy: bounds.upperBound)
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return self[start..<end]
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}
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}
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@ -25,6 +25,7 @@ class AttachmentView: UIImageView, GIFAnimatable {
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var attachment: Attachment!
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var index: Int!
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var expectedSize: CGSize!
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private var attachmentRequest: ImageCache.Request?
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@ -35,12 +36,13 @@ class AttachmentView: UIImageView, GIFAnimatable {
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public lazy var animator: Animator? = Animator(withDelegate: self)
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init(attachment: Attachment, index: Int) {
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init(attachment: Attachment, index: Int, expectedSize: CGSize) {
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super.init(image: nil)
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commonInit()
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self.attachment = attachment
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self.index = index
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self.expectedSize = expectedSize
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loadAttachment()
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}
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@ -90,6 +92,31 @@ class AttachmentView: UIImageView, GIFAnimatable {
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guard AttachmentsContainerView.supportedAttachmentTypes.contains(attachment.kind) else {
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preconditionFailure("invalid attachment type")
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}
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if let hash = attachment.blurHash {
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DispatchQueue.global(qos: .default).async { [weak self] in
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guard let self = self else { return }
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let size: CGSize
|
||||
if let meta = self.attachment.meta,
|
||||
let width = meta.width, let height = meta.height {
|
||||
size = CGSize(width: width, height: height)
|
||||
} else if let orig = self.attachment.meta?.original,
|
||||
let width = orig.width, let height = orig.height {
|
||||
size = CGSize(width: width, height: height)
|
||||
} else {
|
||||
size = self.expectedSize
|
||||
}
|
||||
if let preview = UIImage(blurHash: hash, size: size) {
|
||||
DispatchQueue.main.async { [weak self] in
|
||||
guard let self = self else { return }
|
||||
if self.image == nil {
|
||||
self.image = preview
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
switch attachment.kind {
|
||||
case .image:
|
||||
loadImage()
|
||||
|
|
|
|||
|
|
@ -65,18 +65,18 @@ class AttachmentsContainerView: UIView {
|
|||
|
||||
switch attachments.count {
|
||||
case 1:
|
||||
let attachmentView = createAttachmentView(index: 0)
|
||||
let attachmentView = createAttachmentView(index: 0, hSize: .full, vSize: .full)
|
||||
attachmentView.layer.cornerRadius = 5
|
||||
attachmentView.layer.masksToBounds = true
|
||||
fillView(attachmentView)
|
||||
sendSubviewToBack(attachmentView)
|
||||
accessibilityElements.append(attachmentView)
|
||||
case 2:
|
||||
let left = createAttachmentView(index: 0)
|
||||
let left = createAttachmentView(index: 0, hSize: .half, vSize: .full)
|
||||
left.layer.cornerRadius = 5
|
||||
left.layer.maskedCorners = [.layerMinXMinYCorner, .layerMinXMaxYCorner]
|
||||
left.layer.masksToBounds = true
|
||||
let right = createAttachmentView(index: 1)
|
||||
let right = createAttachmentView(index: 1, hSize: .half, vSize: .full)
|
||||
right.layer.cornerRadius = 5
|
||||
right.layer.maskedCorners = [.layerMaxXMinYCorner, .layerMaxXMaxYCorner]
|
||||
right.layer.masksToBounds = true
|
||||
|
|
@ -92,15 +92,15 @@ class AttachmentsContainerView: UIView {
|
|||
accessibilityElements.append(left)
|
||||
accessibilityElements.append(right)
|
||||
case 3:
|
||||
let left = createAttachmentView(index: 0)
|
||||
let left = createAttachmentView(index: 0, hSize: .half, vSize: .full)
|
||||
left.layer.cornerRadius = 5
|
||||
left.layer.maskedCorners = [.layerMinXMinYCorner, .layerMinXMaxYCorner]
|
||||
left.layer.masksToBounds = true
|
||||
let topRight = createAttachmentView(index: 1)
|
||||
let topRight = createAttachmentView(index: 1, hSize: .half, vSize: .half)
|
||||
topRight.layer.cornerRadius = 5
|
||||
topRight.layer.maskedCorners = .layerMaxXMinYCorner
|
||||
topRight.layer.masksToBounds = true
|
||||
let bottomRight = createAttachmentView(index: 2)
|
||||
let bottomRight = createAttachmentView(index: 2, hSize: .half, vSize: .half)
|
||||
bottomRight.layer.cornerRadius = 5
|
||||
bottomRight.layer.maskedCorners = .layerMaxXMaxYCorner
|
||||
bottomRight.layer.masksToBounds = true
|
||||
|
|
@ -121,11 +121,11 @@ class AttachmentsContainerView: UIView {
|
|||
accessibilityElements.append(topRight)
|
||||
accessibilityElements.append(bottomRight)
|
||||
case 4:
|
||||
let topLeft = createAttachmentView(index: 0)
|
||||
let topLeft = createAttachmentView(index: 0, hSize: .half, vSize: .half)
|
||||
topLeft.layer.cornerRadius = 5
|
||||
topLeft.layer.maskedCorners = .layerMinXMinYCorner
|
||||
topLeft.layer.masksToBounds = true
|
||||
let bottomLeft = createAttachmentView(index: 2)
|
||||
let bottomLeft = createAttachmentView(index: 2, hSize: .half, vSize: .half)
|
||||
bottomLeft.layer.cornerRadius = 5
|
||||
bottomLeft.layer.maskedCorners = .layerMinXMaxYCorner
|
||||
bottomLeft.layer.masksToBounds = true
|
||||
|
|
@ -133,11 +133,11 @@ class AttachmentsContainerView: UIView {
|
|||
topLeft,
|
||||
bottomLeft
|
||||
])
|
||||
let topRight = createAttachmentView(index: 1)
|
||||
let topRight = createAttachmentView(index: 1, hSize: .half, vSize: .half)
|
||||
topRight.layer.cornerRadius = 5
|
||||
topRight.layer.maskedCorners = .layerMaxXMinYCorner
|
||||
topRight.layer.masksToBounds = true
|
||||
let bottomRight = createAttachmentView(index: 3)
|
||||
let bottomRight = createAttachmentView(index: 3, hSize: .half, vSize: .half)
|
||||
bottomRight.layer.cornerRadius = 5
|
||||
bottomRight.layer.maskedCorners = .layerMaxXMaxYCorner
|
||||
bottomRight.layer.masksToBounds = true
|
||||
|
|
@ -177,11 +177,11 @@ class AttachmentsContainerView: UIView {
|
|||
moreView.addSubview(moreLabel)
|
||||
moreView.accessibilityLabel = moreLabel.text
|
||||
|
||||
let topLeft = createAttachmentView(index: 0)
|
||||
let topLeft = createAttachmentView(index: 0, hSize: .half, vSize: .half)
|
||||
topLeft.layer.cornerRadius = 5
|
||||
topLeft.layer.maskedCorners = .layerMinXMinYCorner
|
||||
topLeft.layer.masksToBounds = true
|
||||
let bottomLeft = createAttachmentView(index: 2)
|
||||
let bottomLeft = createAttachmentView(index: 2, hSize: .half, vSize: .half)
|
||||
bottomLeft.layer.cornerRadius = 5
|
||||
bottomLeft.layer.maskedCorners = .layerMinXMaxYCorner
|
||||
bottomLeft.layer.masksToBounds = true
|
||||
|
|
@ -189,7 +189,7 @@ class AttachmentsContainerView: UIView {
|
|||
topLeft,
|
||||
bottomLeft
|
||||
])
|
||||
let topRight = createAttachmentView(index: 1)
|
||||
let topRight = createAttachmentView(index: 1, hSize: .half, vSize: .half)
|
||||
topRight.layer.cornerRadius = 5
|
||||
topRight.layer.maskedCorners = .layerMaxXMinYCorner
|
||||
topRight.layer.masksToBounds = true
|
||||
|
|
@ -225,8 +225,24 @@ class AttachmentsContainerView: UIView {
|
|||
contentHidden = Preferences.shared.blurAllMedia || status.sensitive
|
||||
}
|
||||
|
||||
private func createAttachmentView(index: Int) -> AttachmentView {
|
||||
let attachmentView = AttachmentView(attachment: attachments[index], index: index)
|
||||
private func createAttachmentView(index: Int, hSize: RelativeSize, vSize: RelativeSize) -> AttachmentView {
|
||||
let width: CGFloat
|
||||
switch hSize {
|
||||
case .full:
|
||||
width = bounds.width
|
||||
case .half:
|
||||
width = (bounds.width - 4) / 2
|
||||
}
|
||||
let height: CGFloat
|
||||
switch vSize {
|
||||
case .full:
|
||||
height = bounds.height
|
||||
case .half:
|
||||
height = (bounds.height - 4) / 2
|
||||
}
|
||||
let size = CGSize(width: width, height: height)
|
||||
|
||||
let attachmentView = AttachmentView(attachment: attachments[index], index: index, expectedSize: size)
|
||||
attachmentView.delegate = delegate
|
||||
attachmentView.translatesAutoresizingMaskIntoConstraints = false
|
||||
attachmentView.isAccessibilityElement = true
|
||||
|
|
@ -376,20 +392,20 @@ class AttachmentsContainerView: UIView {
|
|||
|
||||
}
|
||||
|
||||
fileprivate extension UIView {
|
||||
enum RelativeSize {
|
||||
case full, half
|
||||
fileprivate enum RelativeSize {
|
||||
case full, half
|
||||
|
||||
var multiplier: CGFloat {
|
||||
switch self {
|
||||
case .full:
|
||||
return 1
|
||||
case .half:
|
||||
return 0.5
|
||||
}
|
||||
var multiplier: CGFloat {
|
||||
switch self {
|
||||
case .full:
|
||||
return 1
|
||||
case .half:
|
||||
return 0.5
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fileprivate extension UIView {
|
||||
func halfWidth(spacing: CGFloat = 4) -> NSLayoutConstraint {
|
||||
return widthAnchor.constraint(equalTo: superview!.widthAnchor, multiplier: 0.5, constant: -spacing / 2)
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue