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Fixes AppViewController scrolling performance for apps with several privacy permissions

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This commit is contained in:
Riley Testut
2023-05-24 16:19:58 -05:00
committed by Magesh K
parent a3c373108d
commit 0d79a01d74
1 changed files with 35 additions and 19 deletions
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54
AltStore/Components/CollapsingTextView.swift
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@@ -12,18 +12,23 @@ final class CollapsingTextView: UITextView
{
var isCollapsed = true {
didSet {
guard self.isCollapsed != oldValue else { return }
self.shouldResetLayout = true
self.setNeedsLayout()
}
}
var maximumNumberOfLines = 2 {
didSet {
self.shouldResetLayout = true
self.setNeedsLayout()
}
}
var lineSpacing: Double = 2 {
didSet {
self.shouldResetLayout = true
if #available(iOS 16, *)
{
self.updateText()
@@ -37,6 +42,8 @@ final class CollapsingTextView: UITextView
override var text: String! {
didSet {
self.shouldResetLayout = true
guard #available(iOS 16, *) else { return }
self.updateText()
}
@@ -44,6 +51,9 @@ final class CollapsingTextView: UITextView
let moreButton = UIButton(type: .system)
private var shouldResetLayout: Bool = false
private var previousSize: CGSize?
override init(frame: CGRect, textContainer: NSTextContainer?)
{
super.init(frame: frame, textContainer: textContainer)
@@ -105,38 +115,44 @@ final class CollapsingTextView: UITextView
height: font.lineHeight)
self.moreButton.frame = moreButtonFrame
if self.isCollapsed
if self.shouldResetLayout || self.previousSize != self.bounds.size
{
self.textContainer.maximumNumberOfLines = self.maximumNumberOfLines
let boundingSize = self.attributedText.boundingRect(with: CGSize(width: self.textContainer.size.width, height: .infinity), options: [.usesLineFragmentOrigin, .usesFontLeading], context: nil)
let maximumCollapsedHeight = font.lineHeight * Double(self.maximumNumberOfLines)
if boundingSize.height.rounded() > maximumCollapsedHeight.rounded()
if self.isCollapsed
{
var exclusionFrame = moreButtonFrame
exclusionFrame.origin.y += self.moreButton.bounds.midY
exclusionFrame.size.width = self.bounds.width // Extra wide to make sure it wraps to next line.
self.textContainer.exclusionPaths = [UIBezierPath(rect: exclusionFrame)]
self.textContainer.maximumNumberOfLines = self.maximumNumberOfLines
self.moreButton.isHidden = false
let boundingSize = self.attributedText.boundingRect(with: CGSize(width: self.textContainer.size.width, height: .infinity), options: [.usesLineFragmentOrigin, .usesFontLeading], context: nil)
let maximumCollapsedHeight = font.lineHeight * Double(self.maximumNumberOfLines)
if boundingSize.height.rounded() > maximumCollapsedHeight.rounded()
{
var exclusionFrame = moreButtonFrame
exclusionFrame.origin.y += self.moreButton.bounds.midY
exclusionFrame.size.width = self.bounds.width // Extra wide to make sure it wraps to next line.
self.textContainer.exclusionPaths = [UIBezierPath(rect: exclusionFrame)]
self.moreButton.isHidden = false
}
else
{
self.textContainer.exclusionPaths = []
self.moreButton.isHidden = true
}
}
else
{
self.textContainer.maximumNumberOfLines = 0
self.textContainer.exclusionPaths = []
self.moreButton.isHidden = true
}
}
else
{
self.textContainer.maximumNumberOfLines = 0
self.textContainer.exclusionPaths = []
self.moreButton.isHidden = true
self.invalidateIntrinsicContentSize()
}
self.invalidateIntrinsicContentSize()
self.shouldResetLayout = false
self.previousSize = self.bounds.size
}
}