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52 lines
1.6 KiB
Swift
52 lines
1.6 KiB
Swift
//
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// Copyright 2021 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import UIKit
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/// A view controller that provides a preview for use in context menus.
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/// The preview will display a snapshot of whichever view is passed into the init.
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@objcMembers
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class ContextMenuSnapshotPreviewViewController: UIViewController {
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// MARK: - Private
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private let snapshotView: UIView?
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// MARK: - Setup
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/// Creates a new preview by snapshotting the supplied view.
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/// - Parameter view: The view to use as a preview.
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init(view: UIView) {
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self.snapshotView = view.snapshotView(afterScreenUpdates: false)
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super.init(nibName: nil, bundle: nil)
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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// MARK: - Lifecycle
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override func viewDidLoad() {
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super.viewDidLoad()
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guard let snapshotView = snapshotView else { return }
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view.vc_addSubViewMatchingParent(snapshotView)
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preferredContentSize = snapshotView.bounds.size
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}
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}
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