Accessibility - Font Size dynamically change

[heltena]

Hello!

I'm working with this package (thanks! it is great!) and I'm having troubles on debugging the Accessibility font size. Also, it is an issue that could be problematic in production.

I open the "Accessibility Inspector" and the Markdown view looks great if the font size is set to big (50 pt, I guess). The problem is the current view is not observing the UIContentSizeCategory.didChangeNotification notification and I cannot debug properly the view, changing the font size while running.

I'm doing this right now:

import SwiftUI
import MarkdownUI

private struct InvalidateMarkdown: View {
    var document: Document
    var styleGenerator: () -> MarkdownStyle
    @State var style: MarkdownStyle

    init(document: Document, style styleGenerator: (() -> MarkdownStyle)? = nil) {
        self.document = document
        self.styleGenerator =  {
            if let styleGenerator = styleGenerator {
                return styleGenerator()
            } else {
                return DefaultMarkdownStyle(font: .system(.body))
            }
        }
        self._style = State(initialValue: self.styleGenerator())
    }

    init(_ content: String, style: (() -> MarkdownStyle)? = nil) {
        let document = Document(content)
        self.init(document: document, style: style)
    }

    var body: some View {
        Markdown(document)
            .markdownStyle(style)
            .onReceive(NotificationCenter.default.publisher(for: UIContentSizeCategory.didChangeNotification)) { _ in
                self.style = styleGenerator()
            }
    }
}

struct ContentView: View {
    var body: some View {
        VStack {
            InvalidateMarkdown(
                """
                # Header
                * test

                Just a text example **bold**, *italic* `code`
                """)
            {
                DefaultMarkdownStyle(font: .system(.body))
            }
            Spacer()
        }
    }
}

Where, basically, I'm changing the style everytime the "didChangeNotification" arrives. It is not great, and I'm not proud of it. I keep looking your code, but it will be great if you could have a look.

Thanks!!!!!

[heltena]

Sorry, I solved creating a new MarkdownStyle where the "font" attribute is a getter instead a variable:

struct GenericMarkdownStyle: MarkdownStyle {
    var font: MarkdownStyle.Font { .system(.body) }
    var foregroundColor: MarkdownStyle.Color { .label }
    var codeFontName: String? { nil }
    var codeFontSizeMultiple: CGFloat { 0.94 }
    var headingFontSizeMultiples: [CGFloat] { [2, 1.5, 1.17, 1, 0.83, 0.67] }
}