SwiftUI creates a HStack that can shrink freely (4): Layout custom layout

Overview

We have completed 3 different solutions to a shrinkable "HStack" in the first 3 blog posts. They are:

• Use HStack to get the "original taste";
• Use Align + ZStack to take advantage of maximum maneuverability;
• Use "magic mirror" to implement subview @ViewBuilder, a more concise multi-syntax constructor;

Although we can finally achieve what we want, the above solutions are more or less "wrong".

And here, we will finally solve this problem with an almost "flawless" solution!