Stop empty stacks ending up with negative spacing (which led to negative size)

stackotter · stackotter · commit 8a53df4f9b7c · 2024-11-18T12:09:15.000+10:00
diff --git a/Sources/SwiftCrossUI/LayoutSystem.swift b/Sources/SwiftCrossUI/LayoutSystem.swift
@@ -70,7 +70,7 @@ public enum LayoutSystem {
         let visibleChildrenCount = isHidden.count { hidden in
             !hidden
         }
-        let totalSpacing = (visibleChildrenCount - 1) * spacing
+        let totalSpacing = max(visibleChildrenCount - 1, 0) * spacing
         let proposedSizeWithoutSpacing = SIMD2(
             proposedSize.x - (orientation == .horizontal ? totalSpacing : 0),
             proposedSize.y - (orientation == .vertical ? totalSpacing : 0)

Original file line number	Diff line number	Diff line change
`@@ -70,7 +70,7 @@ public enum LayoutSystem {`
`70`	`70`	`let visibleChildrenCount = isHidden.count { hidden in`
`71`	`71`	`!hidden`
`72`	`72`	`}`
`73`		`- let totalSpacing = (visibleChildrenCount - 1) * spacing`
	`73`	`+ let totalSpacing = max(visibleChildrenCount - 1, 0) * spacing`
`74`	`74`	`let proposedSizeWithoutSpacing = SIMD2(`
`75`	`75`	`proposedSize.x - (orientation == .horizontal ? totalSpacing : 0),`
`76`	`76`	`proposedSize.y - (orientation == .vertical ? totalSpacing : 0)`