Can get md block height

[CooperHash]

The feature you want to get in MarkdownView get md block height like MarkdownView(text: "xxx")..onRendered { height in print(height) }

Additional context in some case, we need to know the height of MarkdownView, so i wonder if we can add a new api

[LiYanan2004]

Actually, you can use SwiftUI's native way to get view height.

MarkdownView(text: document.text, baseURL: URL(filePath: baseURL))
    .overlay {
        GeometryReader { proxy in
            Color.clear
                .task(id: proxy.size.height) {
                    print("height: \(proxy.size.height)")
                }
        }
    }

This value can be dynamic when size changes.

https://github.com/LiYanan2004/MarkdownView/assets/37542129/bfcde9ec-4d98-4288-9be7-54771cc3c0f2

[CooperHash]

thanks for advice which works in my project. the idea of this issue from MarkdownView

import SwiftUI
import MarkdownView

struct SampleUI: View {
  var body: some View {
    ScrollView {        
      MarkdownUI(body: markdown)
        .onTouchLink { link in 
          print(link)
          return false
        }
        .onRendered { height in 
          print(height)
        }
    }
  }

  private var markdown: String {
    let path = Bundle.main.path(forResource: "sample", ofType: "md")!
    let url = URL(fileURLWithPath: path)
    return try! String(contentsOf: url, encoding: String.Encoding.utf8)
  }
}

[LiYanan2004]

thanks for advice which works in my project.

That's good.

Adding an overlay is a better solution. Whenever the height of the view changes, for example, device rotates, it can notify you immediately. These scenarios will not trigger re-render because markdown content hasn't changed, so onRendered will not be called again, which may cause unexpected behavior. So I think onRendered(action: (_ height: CGFloat) -> Void) is useless.