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Highlight link touches
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parent
175bd9f78e
commit
834264ebc6
1 changed files with 44 additions and 1 deletions
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@ -5,6 +5,8 @@ import UIKit
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final class TouchFallthroughTextView: UITextView {
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var shouldFallthrough: Bool = true
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private var linkHighlightView: UIView?
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override init(frame: CGRect, textContainer: NSTextContainer?) {
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super.init(frame: frame, textContainer: textContainer)
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initializationActions()
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@ -19,6 +21,35 @@ final class TouchFallthroughTextView: UITextView {
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shouldFallthrough ? urlAndRect(at: point) != nil : super.point(inside: point, with: event)
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}
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override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
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super.touchesBegan(touches, with: event)
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guard let touch = touches.first,
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let (_, rect) = urlAndRect(at: touch.location(in: self)) else {
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return
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}
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let linkHighlightView = UIView(frame: rect)
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self.linkHighlightView = linkHighlightView
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linkHighlightView.transform = Self.linkHighlightViewTransform
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linkHighlightView.layer.cornerRadius = .defaultCornerRadius
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linkHighlightView.backgroundColor = .secondarySystemBackground
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insertSubview(linkHighlightView, at: 0)
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}
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override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
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super.touchesEnded(touches, with: event)
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removeLinkHighlightView()
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}
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override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
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super.touchesCancelled(touches, with: event)
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removeLinkHighlightView()
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}
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override var selectedTextRange: UITextRange? {
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get { shouldFallthrough ? nil : super.selectedTextRange }
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set {
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@ -91,10 +122,22 @@ final class TouchFallthroughTextView: UITextView {
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}
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private extension TouchFallthroughTextView {
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private func initializationActions() {
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static let linkHighlightViewTransform = CGAffineTransform(scaleX: 1.1, y: 1.1)
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func initializationActions() {
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clipsToBounds = false
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textDragInteraction?.isEnabled = false
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textContainerInset = .zero
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textContainer.lineFragmentPadding = 0
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linkTextAttributes = [.foregroundColor: tintColor as Any, .underlineColor: UIColor.clear]
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}
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func removeLinkHighlightView() {
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UIView.animate(withDuration: .defaultAnimationDuration) {
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self.linkHighlightView?.alpha = 0
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} completion: { _ in
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self.linkHighlightView?.removeFromSuperview()
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self.linkHighlightView = nil
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}
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}
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}
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