GeometryReader

import SwiftUI
struct GeometryReaderPlayground: View {
 var body: some View {
 ScrollView {
 VStack(spacing: 16) {
 Text("Size").bold()
 GeometryReader { proxy in
 HStack(spacing: 0) {
 Text("1/3")
 .font(.largeTitle)
 .frame(width: proxy.size.width * 0.33)
 .background(.blue)
 Text("2/3")
 .font(.largeTitle)
 .frame(width: proxy.size.width * 0.67)
 .background(.red)
 }
 }
 .frame(height: 50)
 Text("Frame").bold()
 GeometryReader { proxy in
 VStack {
 Text("Local frame: \(string(for: proxy.frame(in: .local)))")
 Text("Global frame: \(string(for: proxy.frame(in: .global)))")
 }
 }
 .background(.yellow)
 .padding()
 .border(.blue)
 .frame(height: 100)
 }
 .padding()
 }
 .toolbar {
 PlaygroundSourceLink(file: "GeometryReaderPlayground.swift")
 }
 }
 private func string(for rect: CGRect) -> String {
 return "(\(Int(rect.minX)), \(Int(rect.minY)), \(Int(rect.width)), \(Int(rect.height)))"
 }
}