Hello here! I'm playing with `Text` composable, th...

# compose

[gpaligot]

Hello here!
I'm playing with Text composable, the callback onTextLayout to get information about text measurements and the modifier drawBehind.

Text(
    text = "My text here\n Multi line",
    modifier = Modifier.drawBehind {
        // Draw something here
    },
    onTextLayout = { textLayoutResult ->
        // Get value of textLayoutResult.multiParagraph.lineCount 
        // Get values of textLayoutResult.multiParagraph.getLineHeight(index)
    }
)

If I'm using this snippet with two states, it works well but my composable is draw 2 times. First time to measure the text and the second time when my states are updated inside the onTextLayout callback which force a new recomposition.
I would like to know if it is possible to avoid to draw 2 times my text when there are no changes between my first and second composition?
If anyone have an idea, I'm very interested!
Thanks!

[gpaligot]

Oh ok, it seems that it isn't states updated in onTextLayout that force the recomposition. I simplified my composable and it is another states which is responsible about this recomposition.

[gpaligot]

However, I'm interested to know why states updated inside my onTextLayout don't force a recomposition. 🤔

[Adam Powell]

if it's only being read by the drawBehind I would expect it to trigger a draw but not a recomposition