forked from shadowfacts/Tusker
Make GIF attachments animate in the Compose screen
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b9bdd29986
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@ -13,6 +13,7 @@ struct ComposeAttachmentImage: View {
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let attachment: CompositionAttachment
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let fullSize: Bool
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@State private var gifData: Data? = nil
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@State private var image: UIImage? = nil
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@State private var imageContentMode: ContentMode = .fill
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@State private var imageBackgroundColor: Color = .black
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@ -20,7 +21,9 @@ struct ComposeAttachmentImage: View {
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@Environment(\.colorScheme) private var colorScheme: ColorScheme
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var body: some View {
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if let image = image {
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if let gifData {
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GIFViewWrapper(gifData: gifData)
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} else if let image {
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Image(uiImage: image)
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.resizable()
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.aspectRatio(contentMode: imageContentMode)
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@ -54,11 +57,25 @@ struct ComposeAttachmentImage: View {
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// currently only used as thumbnail in ComposeAttachmentRow
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size = CGSize(width: 80, height: 80)
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}
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let isGIF = PHAssetResource.assetResources(for: asset).contains(where: { $0.uniformTypeIdentifier == UTType.gif.identifier })
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if isGIF {
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PHImageManager.default().requestImageDataAndOrientation(for: asset, options: nil) { data, typeIdentifier, orientation, info in
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if typeIdentifier == UTType.gif.identifier {
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self.gifData = data
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} else if let data {
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let image = UIImage(data: data)
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DispatchQueue.main.async {
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self.image = image
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}
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}
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}
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} else {
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PHImageManager.default().requestImage(for: asset, targetSize: size, contentMode: .aspectFill, options: nil) { (image, _) in
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DispatchQueue.main.async {
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self.image = image
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}
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}
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}
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case let .video(url):
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let asset = AVURLAsset(url: url)
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let imageGenerator = AVAssetImageGenerator(asset: asset)
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@ -70,11 +87,32 @@ struct ComposeAttachmentImage: View {
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imageContentMode = .fit
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imageBackgroundColor = .white
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case let .gif(data):
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if let image = UIImage(data: data) {
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self.image = image
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self.gifData = data
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}
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}
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}
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private struct GIFViewWrapper: UIViewRepresentable {
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typealias UIViewType = GIFImageView
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@State private var controller: GIFController
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init(gifData: Data) {
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self._controller = State(wrappedValue: GIFController(gifData: gifData))
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}
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func makeUIView(context: Context) -> GIFImageView {
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let view = GIFImageView()
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controller.attach(to: view)
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controller.startAnimating()
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view.contentMode = .scaleAspectFit
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view.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
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view.setContentCompressionResistancePriority(.defaultLow, for: .vertical)
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return view
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}
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func updateUIView(_ uiView: GIFImageView, context: Context) {
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}
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}
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struct ComposeAttachmentImage_Previews: PreviewProvider {
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