A Modifier.Node that draws into the space of the layout.

This is the androidx.compose.ui.Modifier.Node equivalent of androidx.compose.ui.draw.DrawModifier

import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.drawscope.ContentDrawScope
import androidx.compose.ui.node.DrawModifierNode
import androidx.compose.ui.node.ModifierNodeElement
import androidx.compose.ui.platform.InspectorInfo

class CircleNode(var color: Color) : DrawModifierNode, Modifier.Node() {
    override fun ContentDrawScope.draw() {
        drawCircle(color)
    }
}
data class CircleElement(val color: Color) : ModifierNodeElement<CircleNode>() {
    override fun create() = CircleNode(color)

    override fun update(node: CircleNode) {
        node.color = color
    }

    override fun InspectorInfo.inspectableProperties() {
        name = "color"
        properties["color"] = color
    }
}
fun Modifier.circle(color: Color) = this then CircleElement(color)
Box(Modifier.fillMaxSize().circle(Color.Blue))

Summary

fun DrawModifierNode.invalidateDraw(): Unit