在Jetpack Compose中为自定义手势添加涟漪效果

@Composable
fun CustomGestureRippleEffect() {
    var rippleSize by remember { mutableStateOf(0f) }
    val gestureState = remember { mutableStateOf(GestureState.NONE) }

    Box(
        modifier = Modifier
            .fillMaxSize()
            .pointerInput(Unit) {
                detectTapGestures(
                    onPress = {
                        gestureState.value = GestureState.PRESSED
                        rippleSize = 0f
                    },
                    onRelease = {
                        gestureState.value = GestureState.RELEASED
                    }
                )
            }
    ) {
        Canvas(modifier = Modifier.fillMaxSize()) {
            if (gestureState.value == GestureState.PRESSED) {
                drawCircle(
                    color = Color.Blue,
                    radius = rippleSize,
                    center = Offset(size.width / 2, size.height / 2)
                )
            }
        }
    }

    LaunchedEffect(gestureState.value) {
        when (gestureState.value) {
            GestureState.PRESSED -> {
                animateFloatAsState(
                    targetValue = 1000f,
                    animationSpec = tween(durationMillis = 1000)
                ).value.let { size ->
                    rippleSize = size
                }
            }
            GestureState.RELEASED -> {
                animateFloatAsState(
                    targetValue = 0f,
                    animationSpec = tween(durationMillis = 500)
                ).value.let { size ->
                    rippleSize = size
                }
            }
            else -> Unit
        }
    }
}

enum class GestureState {
    NONE,
    PRESSED,
    RELEASED
}