45 lines
1.4 KiB
Swift
45 lines
1.4 KiB
Swift
//
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// Swiftfin is subject to the terms of the Mozilla Public
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// License, v2.0. If a copy of the MPL was not distributed with this
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// file, you can obtain one at https://mozilla.org/MPL/2.0/.
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//
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// Copyright (c) 2025 Jellyfin & Jellyfin Contributors
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//
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import UIKit
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class DirectionalPanGestureRecognizer: UIPanGestureRecognizer {
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var direction: Direction
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init(direction: Direction, target: AnyObject, action: Selector) {
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self.direction = direction
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super.init(target: target, action: action)
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}
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override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent) {
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super.touchesMoved(touches, with: event)
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if state == .began {
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let velocity = velocity(in: view)
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let isUp = velocity.y < 0
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let isHorizontal = velocity.y.magnitude < velocity.x.magnitude
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let isVertical = velocity.x.magnitude < velocity.y.magnitude
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switch direction {
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case .all: ()
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case .allButDown where isUp || isHorizontal: ()
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case .horizontal where isHorizontal: ()
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case .vertical where isVertical: ()
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case .up where isVertical && velocity.y < 0: ()
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case .down where isVertical && velocity.y > 0: ()
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case .left where isHorizontal && velocity.x < 0: ()
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case .right where isHorizontal && velocity.x > 0: ()
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default:
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state = .cancelled
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}
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}
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}
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}
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