First version

CHDataManagement/Views/Generic/FlowHStack.swift

@@ -0,0 +1,53 @@
+import SwiftUI
+
+struct FlowHStack: Layout {
+
+    var horizontalSpacing: CGFloat = 8
+    
+    var verticalSpacing: CGFloat = 8
+
+    func sizeThatFits(proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) -> CGSize {
+        let subviewSizes = subviews.map { $0.sizeThatFits(proposal) }
+        let maxSubviewHeight = subviewSizes.map { $0.height }.max() ?? .zero
+        var currentRowWidth: CGFloat = .zero
+        var totalHeight: CGFloat = maxSubviewHeight
+        var totalWidth: CGFloat = .zero
+
+        for size in subviewSizes {
+            let requestedRowWidth = currentRowWidth + horizontalSpacing + size.width
+            let availableRowWidth = proposal.width ?? .zero
+            let willOverflow = requestedRowWidth > availableRowWidth
+
+            if willOverflow {
+                totalHeight += verticalSpacing + maxSubviewHeight
+                currentRowWidth = size.width
+            } else {
+                currentRowWidth = requestedRowWidth
+            }
+
+            totalWidth = max(totalWidth, currentRowWidth)
+        }
+
+        return CGSize(width: totalWidth, height: totalHeight)
+    }
+
+    func placeSubviews(in bounds: CGRect, proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) {
+        let subviewSizes = subviews.map { $0.sizeThatFits(proposal) }
+        let maxSubviewHeight = subviewSizes.map { $0.height }.max() ?? .zero
+        var point = CGPoint(x: bounds.minX, y: bounds.minY)
+
+        for index in subviews.indices {
+            let requestedWidth = point.x + subviewSizes[index].width
+            let availableWidth = bounds.maxX
+            let willOverflow = requestedWidth > availableWidth
+
+            if willOverflow {
+                point.x = bounds.minX
+                point.y += maxSubviewHeight + verticalSpacing
+            }
+
+            subviews[index].place(at: point, proposal: ProposedViewSize(subviewSizes[index]))
+            point.x += subviewSizes[index].width + horizontalSpacing
+        }
+    }
+}