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Pill Performance Improvement part 3 (#1908)

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* pill performance improvement

* code improvement

* better doc
This commit is contained in:
Mauro
2023-10-16 16:43:35 +02:00
committed by GitHub
parent 6898419211
commit 0d72554e6f
4 changed files with 15 additions and 2 deletions
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ElementX/Sources/Other/Pills/PillTextAttachment.swift
+8 -1
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@@ -26,6 +26,7 @@ final class PillTextAttachment: NSTextAttachment {
}
private(set) var pillData: PillTextAttachmentData!
weak var view: UIView?
private var lastBounds: CGRect?
func invalidateLastBounds() {
@@ -33,14 +34,20 @@ final class PillTextAttachment: NSTextAttachment {
}
override func attachmentBounds(for textContainer: NSTextContainer?, proposedLineFragment lineFrag: CGRect, glyphPosition position: CGPoint, characterIndex charIndex: Int) -> CGRect {
var rect: CGRect
if let lastBounds {
return lastBounds
} else if let view {
rect = CGRect(origin: .zero, size: view.sizeThatFits(UIView.layoutFittingExpandedSize))
} else {
rect = super.attachmentBounds(for: textContainer, proposedLineFragment: lineFrag, glyphPosition: position, characterIndex: charIndex)
}
var rect = super.attachmentBounds(for: textContainer, proposedLineFragment: lineFrag, glyphPosition: position, characterIndex: charIndex)
let fontData = pillData.fontData
// Align the pill text vertically with the surrounding text.
rect.origin.y = fontData.descender + (fontData.lineHeight - rect.height) / 2.0
// Set the max width of the pill
rect.size.width = min(rect.size.width, PillConstants.maxWidth)
lastBounds = rect
return rect
}