Configuring multiline titles in PDF using Swift for iOS

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//
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//  Copyright © 2021-2026 PSPDFKit GmbH. All rights reserved.
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//
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//  The Nutrient sample applications are licensed with a modified BSD license.
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//  Please see License for details. This notice may not be removed from this file.
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//
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import PSPDFKit
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import PSPDFKitUI
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class MultilineDocumentTitleExample: Example {
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    override init() {
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        super.init()
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        contentDescription = "Shows how to configure the document title label to fit a long, multiline title."
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        category = .viewCustomization
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    }
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    override func invoke(with delegate: ExampleRunnerDelegate) -> UIViewController? {
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        let document = AssetLoader.document(for: .annualReport)
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        document.title = "This PDF document has a pretty long title. It should wrap into multiple lines on a narrow screen."
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        let viewController = PDFViewController(document: document) { builder in
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            // If you're expecting long document titles and want to make sure
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            // it's always visible, set the following configuration option.
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            builder.documentLabelEnabled = .YES
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        }
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        // Zero means as many lines as needed.
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        viewController.userInterfaceView.documentLabel.label.numberOfLines = 0
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        viewController.userInterfaceView.documentLabel.label.textAlignment = .center
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        return viewController
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    }
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}