Preventing a Text view from breaking when the font size is increased in SwiftUI (Dynamic type / accessibility)

Question

I have a few views in an HStack which gives me a view like this

There are 3 images and 2 Text views in here

My goal is to support graceful dynamic text / font scaling for larger text sizes, that is scaling the images and the text views.

This works for the most part:

My issue arises on really large sizes and with the text, the text itself seems break because it is within an HStack

What I desire is for the 19.5 to be in 1 line and the the 20 to be on another line rather than the 19.5 breaking - is this possible ?

I've tried things like applying .lineLimit() of 1 and nil to the text as I saw in some answers but that didn't work.

I've also tried applying .fixedSize(horizontal: false, vertical: true) to the text to no avail.

I use @ScaledMetric outlined in this answer to scale the image.

Happy to share any code, however, it is just a basic HStack with 3 image views and two text views.

Did you try Text("19.5") + Text("/") + Text("20") instead of HStack? — lazarevzubov
– lazarevzubov, Commented Feb 28, 2024 at 6:51
@lazarevzubov - I did give this a shot but it did not give me the desired result. — Shawn Frank
– Shawn Frank, Commented Feb 28, 2024 at 7:30

Benzy Neez · Accepted Answer · 2024-02-28 07:11:13Z

2

Try applying . minimumScaleFactor in combination with .scaledToFit to the HStack with the Text elements:

private var target: some View {
    Image(systemName: "target")
        .resizable()
        .scaledToFit()
        .foregroundStyle(.red)
        .frame(width: 40, height: 40)
}

var body: some View {
    HStack(spacing: 0) {
        target
        target
        target
        HStack(spacing: 0) {
            Text("19.5")
                .foregroundStyle(.yellow)
            Text("/")
                .foregroundStyle(.white)
            Text("20")
                .foregroundStyle(.white)
        }
        .padding(.leading, 10)
        .font(.largeTitle)
        .minimumScaleFactor(0.1)
        .scaledToFit()
    }
    .frame(maxWidth: .infinity, maxHeight: .infinity)
    .background(.black)
}

Screenshot

answered Feb 28, 2024 at 7:11

Benzy Neez

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2 Comments

Shawn Frank Over a year ago

This solution works really well for the most part. The only thing I notice is that at a certain point, the image keeps scaling and then the text starts shrinking. So I applied your minimumScaleFactor and .scaledToFit to the outer HStack which almost gives the desirable result. The only minor issue now is that at the max size - the 19.5 becomes slightly smaller than the / and 20. Not sure if there is a simple way to ensure they are always the same size.

Benzy Neez Over a year ago

@ShawnFrank Pleased to hear you're getting nearer to a solution. I would suggest keeping the scaledToFit on the inner HStack and then find another way to resolve the issue of the image scaling. You could submit a new post if you need help (with a minimal reproducible example to demonstrate the issue).

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