از محتوای مقیاس‌پذیر کاربر پشتیبانی کنید

private class DensityScalingState(
    // Note: For accessibility, typical min/max values are ~0.75x and ~3.5x.
    private val minScale: Float = 0.75f,
    private val maxScale: Float = 3.5f,
    private val currentDensity: Density
) {
    val transformableState = TransformableState { zoomChange, _, _ ->
        scaleFactor.floatValue =
            (scaleFactor.floatValue * zoomChange).coerceIn(minScale, maxScale)
    }
    val scaleFactor = mutableFloatStateOf(1f)
    fun scaledDensity(): Density {
        return Density(
            currentDensity.density * scaleFactor.floatValue,
            currentDensity.fontScale
        )
    }
}

@Composable
fun DensityScalingSample() {
    val currentDensity = LocalDensity.current
    val scaleState =
        remember(currentDensity) { DensityScalingState(currentDensity = currentDensity) }

    Box(
        modifier = Modifier
            .fillMaxSize()
            .transformable(state = scaleState.transformableState),
        contentAlignment = Alignment.TopCenter
    ) {
        CompositionLocalProvider(
            LocalDensity provides scaleState.scaledDensity()
        ) {
            DemoCard()
        }
    }
}
ScalableContentSnippets.kt

class FontScaleState(
    // Note: For accessibility, typical min/max values are ~0.75x and ~3.5x.
    private val minScale: Float = 0.75f,
    private val maxScale: Float = 3.5f,
    private val currentDensity: Density
) {
    val transformableState = TransformableState { zoomChange, _, _ ->
        scaleFactor.floatValue =
            (scaleFactor.floatValue * zoomChange).coerceIn(minScale, maxScale)
    }
    val scaleFactor = mutableFloatStateOf(1f)
    fun scaledFont(): Density {
        return Density(
            currentDensity.density,
            currentDensity.fontScale * scaleFactor.floatValue
        )
    }
}

@Composable
fun FontScalingSample() {
    val currentDensity = LocalDensity.current
    val scaleState = remember { FontScaleState(currentDensity = currentDensity) }

    Box(
        modifier = Modifier
            .fillMaxSize()
            .transformable(state = scaleState.transformableState),
        contentAlignment = Alignment.TopCenter
    ) {
        CompositionLocalProvider(
            LocalDensity provides scaleState.scaledFont()
        ) {
            DemoCard()
        }
    }
}
ScalableContentSnippets.kt

@Composable
private fun DemoCard() {
    Card(
        modifier = Modifier
            .width(360.dp)
            .padding(16.dp),
        shape = RoundedCornerShape(12.dp)
    ) {
        Column(
            modifier = Modifier.padding(16.dp),
            verticalArrangement = Arrangement.spacedBy(16.dp)
        ) {
            Text("Demo Card", style = MaterialTheme.typography.headlineMedium)
            var isChecked by remember { mutableStateOf(true) }
            Row(verticalAlignment = Alignment.CenterVertically) {
                Text("Demo Switch", Modifier.weight(1f), style = MaterialTheme.typography.bodyLarge)
                Switch(checked = isChecked, onCheckedChange = { isChecked = it })
            }
            Row(verticalAlignment = Alignment.CenterVertically) {
                Icon(Icons.Filled.Person, "Icon", Modifier.size(32.dp))
                Spacer(Modifier.width(8.dp))
                Text("Demo Icon", style = MaterialTheme.typography.bodyLarge)
            }
            Row(
                Modifier.fillMaxWidth(),
                horizontalArrangement = Arrangement.SpaceBetween
            ) {
                Box(
                    Modifier
                        .width(100.dp)
                        .weight(1f)
                        .height(80.dp)
                        .background(Color.Blue)
                )
                Box(
                    Modifier
                        .width(100.dp)
                        .weight(1f)
                        .height(80.dp)
                        .background(Color.Red)
                )
            }
            Text(
                "Demo Text: Lorem ipsum dolor sit amet, consectetur adipiscing elit," +
                    " sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.",
                style = MaterialTheme.typography.bodyMedium,
                textAlign = TextAlign.Justify
            )
        }
    }
}
ScalableContentSnippets.kt