How to outline text in Jetpack Compose

Question

I have a Jetpack Compose Text() element that I'd like to outline in black like so .
Anyone know how to do this? I've tried using the border() modifier, but that just adds a border around the rectangular area containing the text. I've also tried overlaying two text elements, but that doesn't quite work either.

Answer 1

The 1.4.0-alpha01 introduced a DrawStyle parameter to TextStyle function that enables drawing outlined text.

You can use something like:

Text(
    text = "Sample",
    style = TextStyle.Default.copy(
        fontSize = 64.sp,
        drawStyle = Stroke(
            miter = 10f,
            width = 5f,
            join = StrokeJoin.Round
        )
    )
)

Before 1.4.0-alpha01 you can use a Canvas and the drawIntoCanvas function.

Something like:

Canvas(
    modifier = Modifier.fillMaxSize(),
    onDraw = {
                drawIntoCanvas {
                    it.nativeCanvas.drawText(
                        "Sample",
                        0f,
                        120.dp.toPx(),
                        textPaintStroke
                    )
                    it.nativeCanvas.drawText(
                        "Sample",
                        0f,
                        120.dp.toPx(),
                        textPaint
                    )
                }
            }
)

with these Paint:

val textPaintStroke = Paint().asFrameworkPaint().apply {
    isAntiAlias = true
    style = android.graphics.Paint.Style.STROKE
    textSize = 64f
    color = android.graphics.Color.BLACK
    strokeWidth = 12f
    strokeMiter= 10f
    strokeJoin = android.graphics.Paint.Join.ROUND
}

val textPaint = Paint().asFrameworkPaint().apply {
    isAntiAlias = true
    style = android.graphics.Paint.Style.FILL
    textSize = 64f
    color = android.graphics.Color.WHITE
}