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Fix profile tab switching animation ending in bad state 

Caused by fda0c18794, old/new.view is no
longer the same as .collectionView, so the transform wasn't being
properly reset.

Closes #536
This commit is contained in:
Shadowfacts 2024-08-31 11:09:17 -04:00
parent cc696e58fc
commit 57c023c973
1 changed files with 8 additions and 6 deletions
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14
Tusker/Screens/Profile/ProfileViewController.swift
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@ -213,7 +213,7 @@ class ProfileViewController: UIViewController, StateRestorableViewController {
// old header cell must have the header view // old header cell must have the header view
let headerView = oldHeaderCell.addConstraint(height: oldHeaderCell.bounds.height)! let headerView = oldHeaderCell.addConstraint(height: oldHeaderCell.bounds.height)!
// Set the outgoing VC's header view mode to placeholder, so that it does steal the header view back // Set the outgoing VC's header view mode to placeholder, so that it does not steal the header view back
// in case it updates the cell in the background. // in case it updates the cell in the background.
old.headerViewMode = .placeholder(height: oldHeaderCell.bounds.height) old.headerViewMode = .placeholder(height: oldHeaderCell.bounds.height)
@ -224,12 +224,13 @@ class ProfileViewController: UIViewController, StateRestorableViewController {
} }
// disable user interaction during animation, to avoid any potential weird race conditions // disable user interaction during animation, to avoid any potential weird race conditions
headerView.isUserInteractionEnabled = false view.isUserInteractionEnabled = false
headerView.layer.zPosition = 100 headerView.layer.zPosition = 100
view.addSubview(headerView) view.addSubview(headerView)
let oldHeaderCellTop = oldHeaderCell.convert(CGPoint.zero, to: view).y let oldHeaderCellTop = oldHeaderCell.convert(CGPoint.zero, to: view).y
let headerTopOffset = oldHeaderCellTop - view.safeAreaInsets.top let headerTopOffset = oldHeaderCellTop - view.safeAreaInsets.top
let headerBottomOffset = oldHeaderCell.convert(CGPoint(x: 0, y: oldHeaderCell.bounds.maxY), to: view).y// - view.safeAreaInsets.top let headerBottomOffset = oldHeaderCell.convert(CGPoint(x: 0, y: oldHeaderCell.bounds.maxY), to: view).y
NSLayoutConstraint.activate([ NSLayoutConstraint.activate([
headerView.topAnchor.constraint(equalTo: view.topAnchor, constant: headerTopOffset), headerView.topAnchor.constraint(equalTo: view.topAnchor, constant: headerTopOffset),
headerView.bottomAnchor.constraint(equalTo: view.topAnchor, constant: headerBottomOffset), headerView.bottomAnchor.constraint(equalTo: view.topAnchor, constant: headerBottomOffset),
@ -272,16 +273,17 @@ class ProfileViewController: UIViewController, StateRestorableViewController {
} }
animator.addCompletion { _ in animator.addCompletion { _ in
old.removeViewAndController() old.removeViewAndController()
old.collectionView.transform = .identity old.view.transform = .identity
new.collectionView.transform = .identity new.view.transform = .identity
new.collectionView.contentOffset = origOldContentOffset new.collectionView.contentOffset = origOldContentOffset
// reenable scroll indicators after the switching animation is done // reenable scroll indicators after the switching animation is done
old.collectionView.showsVerticalScrollIndicator = true old.collectionView.showsVerticalScrollIndicator = true
new.collectionView.showsVerticalScrollIndicator = true new.collectionView.showsVerticalScrollIndicator = true
headerView.isUserInteractionEnabled = true self.view.isUserInteractionEnabled = true
headerView.transform = .identity headerView.transform = .identity
headerView.layer.zPosition = 0 headerView.layer.zPosition = 0
// move the header view into the new page controller's cell // move the header view into the new page controller's cell