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Dynamically disables interactive back gesture when viewing source header image

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Only disables gesture if touches are within headerContainerView to ensure back gesture works as expected majority of the time.
This commit is contained in:
Riley Testut
2023-04-04 17:06:58 -05:00
committed by Magesh K
parent 9c7d222a9e
commit b2dcdc02c7
1 changed files with 23 additions and 1 deletions
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24
AltStore/Components/HeaderContentViewController.swift
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@@ -20,7 +20,8 @@ protocol ScrollableContentViewController: UIViewController
class HeaderContentViewController<Header: UIView, Content: ScrollableContentViewController> : UIViewController, class HeaderContentViewController<Header: UIView, Content: ScrollableContentViewController> : UIViewController,
UIAdaptivePresentationControllerDelegate, UIAdaptivePresentationControllerDelegate,
UIScrollViewDelegate UIScrollViewDelegate,
UIGestureRecognizerDelegate
{ {
var tintColor: UIColor? { var tintColor: UIColor? {
didSet { didSet {
@@ -48,6 +49,8 @@ class HeaderContentViewController<Header: UIView, Content: ScrollableContentView
private var backgroundBlurView: UIVisualEffectView! private var backgroundBlurView: UIVisualEffectView!
private var contentViewControllerShadowView: UIView! private var contentViewControllerShadowView: UIView!
private var ignoreBackGestureRecognizer: UIPanGestureRecognizer!
private var blurAnimator: UIViewPropertyAnimator? private var blurAnimator: UIViewPropertyAnimator?
private var navigationBarAnimator: UIViewPropertyAnimator? private var navigationBarAnimator: UIViewPropertyAnimator?
private var contentSizeObservation: NSKeyValueObservation? private var contentSizeObservation: NSKeyValueObservation?
@@ -117,6 +120,11 @@ class HeaderContentViewController<Header: UIView, Content: ScrollableContentView
self.headerContainerView = UIView(frame: .zero) self.headerContainerView = UIView(frame: .zero)
self.view.addSubview(self.headerContainerView, pinningEdgesWith: .zero) self.view.addSubview(self.headerContainerView, pinningEdgesWith: .zero)
self.ignoreBackGestureRecognizer = UIPanGestureRecognizer(target: self, action: nil)
self.ignoreBackGestureRecognizer.delegate = self
self.headerContainerView.addGestureRecognizer(self.ignoreBackGestureRecognizer)
self.navigationController?.interactivePopGestureRecognizer?.require(toFail: self.ignoreBackGestureRecognizer) // So we can disable back gesture when viewing header.
self.headerScrollView = UIScrollView(frame: .zero) self.headerScrollView = UIScrollView(frame: .zero)
self.headerScrollView.delegate = self self.headerScrollView.delegate = self
self.headerScrollView.isPagingEnabled = true self.headerScrollView.isPagingEnabled = true
@@ -420,6 +428,20 @@ class HeaderContentViewController<Header: UIView, Content: ScrollableContentView
default: break default: break
} }
} }
//MARK: UIGestureRecognizerDelegate
func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool
{
// Ignore interactive back gesture when viewing header, which means returning `true` to enable ignoreBackGestureRecognizer.
let disableBackGesture = self.isViewingHeader
return disableBackGesture
}
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool
{
return true
}
} }
private extension HeaderContentViewController private extension HeaderContentViewController