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LinkHighlightingNode: ceil instead of floor for stair-step radii

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drawRectsImageContent's modern path computed nextRadius and
prevRadius as min(outerRadius, floor(|Δx| * 0.5)). When |Δx| < 2
the floor produces 0 and the addArc call becomes a no-op,
leaving an unsmoothed corner at the stair-step. Replace floor
with ceil so any non-zero edge mismatch rounds up to at least
1 px. Exact-equality cases (Δx == 0) are unaffected — they take
the else branch with a straight addLine.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
isaac 2026-05-02 11:46:38 +02:00
parent d1c5d66bd3
commit b1aab0839c
1 changed files with 2 additions and 2 deletions
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4
submodules/Display/Source/LinkHighlightingNode.swift
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@ -124,7 +124,7 @@ private func drawRectsImageContent(size: CGSize, context: CGContext, color: UICo
if rect.maxX == next.maxX {
context.addLine(to: CGPoint(x: next.maxX, y: next.midY))
} else {
let nextRadius = min(outerRadius, floor(abs(rect.maxX - next.maxX) * 0.5))
let nextRadius = min(outerRadius, ceil(abs(rect.maxX - next.maxX) * 0.5))
context.addLine(to: CGPoint(x: rect.maxX, y: rect.maxY - nextRadius))
if next.maxX > rect.maxX {
context.addArc(tangent1End: CGPoint(x: rect.maxX, y: rect.maxY), tangent2End: CGPoint(x: rect.maxX + nextRadius, y: rect.maxY), radius: nextRadius)
@ -151,7 +151,7 @@ private func drawRectsImageContent(size: CGSize, context: CGContext, color: UICo
if rect.minX == prev.minX {
context.addLine(to: CGPoint(x: prev.minX, y: prev.midY))
} else {
let prevRadius = min(outerRadius, floor(abs(rect.minX - prev.minX) * 0.5))
let prevRadius = min(outerRadius, ceil(abs(rect.minX - prev.minX) * 0.5))
context.addLine(to: CGPoint(x: rect.minX, y: rect.minY + prevRadius))
if rect.minX < prev.minX {
context.addArc(tangent1End: CGPoint(x: rect.minX, y: rect.minY), tangent2End: CGPoint(x: rect.minX + prevRadius, y: rect.minY), radius: prevRadius)