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We reimplement parts of SwiftUI's layout system — starting with view protocols and shapes — to understand it better.

Episode 225 · Oct 16 2020

We implement fixed frames to understand how the proposed size, frame size, and content size interact.

Episode 226 · Oct 23 2020

We replicate SwiftUI's alignment types and add the alignment parameter to the fixed frame API.

Episode 227 · Oct 30 2020

We implement Text, Overlay, and Geometry Reader to measure views and display their sizes onscreen.

Episode 228 · Nov 06 2020

We replicate the behavior of flexible frames with minimum and maximum widths.

Episode 229 · Nov 13 2020

We add SwiftUI's fixed size modifier and explain how it works with text and flexible frames.

Episode 230 · Nov 20 2020

We begin the implementation of HStack, starting with support for fixed size children.

Episode 231 · Nov 27 2020

We continue with our HStack implementation to make it work with fixed and flexible views.

Episode 232 · Dec 04 2020

We add SwiftUI's custom alignment guide API and make it work with fixed frames.

Episode 233 · Dec 11 2020

We continue adding support for custom alignment to all our views, focusing in particular on HStack.

Episode 234 · Dec 18 2020

We adjust the HStack layout algorithm to work with child views of different layout priorities.

Episode 235 · Dec 24 2020

We write an automated fuzz test for our HStack implementation and uncover a subtle bug in the process.

Episode 236 · Jan 08 2021

For the final SwiftUI view in this series, we examine the layout of grid views with fixed columns.

Episode 237 · Jan 15 2021

We add support for flexible columns to our grid view implementation.

Episode 238 · Jan 22 2021