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fix(macos): use consistent paragraph style for placeholder height measurement #8303

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Merged
noanflaherty merged 1 commit into from
Feb 24, 2026
Merged

fix(macos): use consistent paragraph style for placeholder height measurement #8303

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4 changes: 3 additions & 1 deletion clients/macos/vellum-assistant/Features/Chat/ComposerView.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -906,12 +906,14 @@ private final class CenteringClipView: NSClipView {
let placeholder = textView.placeholderText,
!placeholder.isEmpty {
let font = textView.font ?? NSFont.systemFont(ofSize: 13)
let paragraph = NSMutableParagraphStyle()
paragraph.lineBreakMode = .byTruncatingTail
let linePadding = textContainer.lineFragmentPadding
let availableWidth = max(0, textView.bounds.width - textView.textContainerInset.width * 2 - linePadding * 2)
let placeholderSize = (placeholder as NSString).boundingRect(
with: NSSize(width: availableWidth, height: .greatestFiniteMagnitude),
options: [.usesLineFragmentOrigin],
attributes: [.font: font]
attributes: [.font: font, .paragraphStyle: paragraph]
)
usedHeight = max(usedHeight, placeholderSize.height)
}
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