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kotlinlang

image.png

Could anybody explain how `lineHeight` works? Why doesn't it affect the first line? What is the space below the first line? (Code in thread)

Code:
```@Preview(showBackground = true)
@Composable
fun LineHeightPreview(size: Int = 100) {
    val dm = AmbientContext.current.resources.displayMetrics
    val text = buildAnnotatedString {
        pushStyle(ParagraphStyle(lineHeight = (4 * size).sp))
        pushStyle(SpanStyle(fontSize = size.sp))
        append("ABCfly\nABCfly")
    }
    val textDelegate = TextDelegate(text, TextStyle.Default, resourceLoader = AmbientFontLoader.current, density = Density(dm.density))
    val r = textDelegate.layout(Constraints(), LayoutDirection.Ltr)
    Canvas(modifier = Modifier.width((r.size.width / dm.density).dp).height((r.size.height / dm.density).dp)) {
        val t0 = r.getLineTop(0)
        drawLine(Color.Blue, start = Offset(y = t0, x = 0f), end = Offset(y = t0, x = r.size.width.toFloat()), strokeWidth = 20f)
        val b0 = r.getLineBottom(0)
        drawLine(Color.Magenta, start = Offset(y = b0, x = 0f), end = Offset(y = b0, x = r.size.width.toFloat()), strokeWidth = 40f)
        val t1 = r.getLineTop(1)
        drawLine(Color.Blue, start = Offset(y = t1, x = 0f), end = Offset(y = t1, x = r.size.width.toFloat()), strokeWidth = 20f)
        drawIntoCanvas { TextDelegate.paint(canvas = it, r) }
    }
}```

looks like an inherit from android platform

<@ULJPBEXDG> in case they remember if this is on purpose or what the decision was