awaitDragOrCancellation

AwaitDragOrCancellationSample

@Composable
fun AwaitDragOrCancellationSample() {
    val offsetX = remember { mutableStateOf(0f) }
    val offsetY = remember { mutableStateOf(0f) }
    var size by remember { mutableStateOf(Size.Zero) }
    Box(Modifier.fillMaxSize().onSizeChanged { size = it.toSize() }) {
        Box(
            Modifier.offset { IntOffset(offsetX.value.roundToInt(), offsetY.value.roundToInt()) }
                .size(50.dp)
                .background(Color.Blue)
                .pointerInput(Unit) {
                    awaitEachGesture {
                        val down = awaitFirstDown()
                        var change =
                            awaitTouchSlopOrCancellation(down.id) { change, over ->
                                val original = Offset(offsetX.value, offsetY.value)
                                val summed = original + over
                                val newValue =
                                    Offset(
                                        x = summed.x.coerceIn(0f, size.width - 50.dp.toPx()),
                                        y = summed.y.coerceIn(0f, size.height - 50.dp.toPx()),
                                    )
                                change.consume()
                                offsetX.value = newValue.x
                                offsetY.value = newValue.y
                            }
                        while (change != null && change.pressed) {
                            change = awaitDragOrCancellation(change.id)
                            if (change != null && change.pressed) {
                                val original = Offset(offsetX.value, offsetY.value)
                                val summed = original + change.positionChange()
                                val newValue =
                                    Offset(
                                        x = summed.x.coerceIn(0f, size.width - 50.dp.toPx()),
                                        y = summed.y.coerceIn(0f, size.height - 50.dp.toPx()),
                                    )
                                change.consume()
                                offsetX.value = newValue.x
                                offsetY.value = newValue.y
                            }
                        }
                    }
                }
        )
    }
}