Ticker - Text Properties

ticker_text_properties.kt

    Text(
        text = letter.toString(),
        color = textColor,
        fontFamily = FontFamily.Monospace,
        fontSize = fontSize,
        modifier = modifier
            .background(backgroundColor)
            .drawBehind {
                drawLine(
                    Color.Red,
                    Offset(x = 0f, y = center.y),
                    Offset(
                        x = size.width,
                        y = center.y
                    ),
                    strokeWidth = density,
                )
            },
        onTextLayout = { textLayoutResult ->
            // 1
            val layoutInput = textLayoutResult.layoutInput
            // 2
            val fontSizePx = with(layoutInput.density) { layoutInput.style.fontSize.toPx() }
            // 3
            val baseline = textLayoutResult.firstBaseline
            // 4
            val top = textLayoutResult.getLineTop(0)
            // 5
            val bottom = textLayoutResult.getLineBottom(0)
            // 6
            val ascent = bottom - fontSizePx
            // 7
            val descent = bottom - (baseline - fontSizePx - top)
        }
    )