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Fix collapse button disappearing when navigating away

This commit is contained in:
Shadowfacts 2023-01-20 10:51:56 -05:00
parent 468a559127
commit 3e0feba273
3 changed files with 36 additions and 18 deletions
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40
Tusker/Views/Status/BaseStatusTableViewCell.swift
View File

@ -361,23 +361,31 @@ class BaseStatusTableViewCell: UITableViewCell {
let buttonImage = UIImage(systemName: collapsed ? "chevron.down" : "chevron.up")!
if animated, let buttonImageView = collapseButton.imageView {
// we need to use a keyframe animation for this, because we want to control the direction the chevron rotates
// when rotating ±π, UIKit will always rotate in the same direction
// using a keyframe to set an intermediate point in the animation allows us to force a specific direction
UIView.animateKeyframes(withDuration: 0.2, delay: 0, options: .calculationModeLinear, animations: {
UIView.addKeyframe(withRelativeStartTime: 0, relativeDuration: 0.5) {
buttonImageView.transform = CGAffineTransform(rotationAngle: collapsed ? .pi / 2 : -.pi / 2)
}
UIView.addKeyframe(withRelativeStartTime: 0.5, relativeDuration: 0.5) {
buttonImageView.transform = CGAffineTransform(rotationAngle: .pi)
}
}, completion: { (finished) in
buttonImageView.transform = .identity
self.collapseButton.setImage(buttonImage, for: .normal)
})
} else {
if let buttonImageView = collapseButton.imageView {
collapseButton.setImage(buttonImage, for: .normal)
if animated {
buttonImageView.layer.opacity = 0
// this whole hack is necessary because when just rotating buttonImageView, it moves to the left of the button and then animates back to the center
let imageView = UIImageView(image: buttonImageView.image)
imageView.translatesAutoresizingMaskIntoConstraints = false
contentView.addSubview(imageView)
NSLayoutConstraint.activate([
imageView.widthAnchor.constraint(equalTo: buttonImageView.widthAnchor),
imageView.heightAnchor.constraint(equalTo: buttonImageView.heightAnchor),
imageView.centerXAnchor.constraint(equalTo: collapseButton.centerXAnchor),
imageView.centerYAnchor.constraint(equalTo: collapseButton.centerYAnchor),
])
imageView.tintColor = .white
UIView.animate(withDuration: 0.3, delay: 0) {
imageView.transform = CGAffineTransform(rotationAngle: .pi)
} completion: { _ in
imageView.removeFromSuperview()
buttonImageView.layer.opacity = 1
}
}
}
if collapsed {

6
Tusker/Views/Status/ConversationMainStatusTableViewCell.xib
View File

@ -81,10 +81,14 @@
<constraints>
<constraint firstAttribute="height" constant="30" id="icD-3q-uJ6"/>
</constraints>
<color key="tintColor" systemColor="systemBackgroundColor"/>
<color key="tintColor" systemColor="tintColor"/>
<state key="normal" image="chevron.down" catalog="system">
<preferredSymbolConfiguration key="preferredSymbolConfiguration" scale="large"/>
</state>
<buttonConfiguration key="configuration" style="filled" image="chevron.down" catalog="system">
<preferredSymbolConfiguration key="preferredSymbolConfigurationForImage" scale="large"/>
<color key="baseForegroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
</buttonConfiguration>
<connections>
<action selector="collapseButtonPressed" destination="IDI-ur-8pa" eventType="touchUpInside" id="00b-nM-U5g"/>
</connections>

8
Tusker/Views/Status/TimelineStatusTableViewCell.xib
View File

@ -109,10 +109,16 @@
<constraints>
<constraint firstAttribute="height" constant="30" id="z84-XW-gP3"/>
</constraints>
<color key="tintColor" systemColor="systemBackgroundColor"/>
<color key="tintColor" systemColor="tintColor"/>
<inset key="imageEdgeInsets" minX="0.0" minY="0.0" maxX="2.2250738585072014e-308" maxY="0.0"/>
<state key="normal" image="chevron.down" catalog="system">
<color key="titleColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
<preferredSymbolConfiguration key="preferredSymbolConfiguration" scale="large"/>
</state>
<buttonConfiguration key="configuration" style="filled" image="chevron.down" catalog="system">
<preferredSymbolConfiguration key="preferredSymbolConfigurationForImage" scale="large"/>
<color key="baseForegroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
</buttonConfiguration>
<connections>
<action selector="collapseButtonPressed" destination="BR5-ZS-LIo" eventType="touchUpInside" id="twO-rE-1pQ"/>
</connections>