Parallax effect in the launcher

[louis993546]

import androidx.compose.foundation.Image
import androidx.compose.foundation.layout.*
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.verticalScroll
import androidx.compose.runtime.*
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.graphicsLayer
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.unit.dp

@Composable
fun ParallaxExample() {
    // Create a ScrollState object to track the scroll position
    val scrollState = rememberScrollState()

    // Calculate the parallax offset based on the current scroll position
    val parallaxOffset = with(LocalDensity.current) { scrollState.value.dp / 3 }

    Column(
        modifier = Modifier
            .fillMaxSize()
            .verticalScroll(scrollState)
    ) {
        // Add a background image that will move with the scroll
        Image(
            painter = painterResource(id = R.drawable.background_image),
            contentDescription = "Background image",
            modifier = Modifier
                .graphicsLayer(
                    translationY = -parallaxOffset
                )
                .height(400.dp)
                .fillMaxWidth()
        )

        // Add some content that will scroll normally
        Column(
            modifier = Modifier.padding(16.dp)
        ) {
            // Add some text content
            // ...

            // Add some more image content
            // ...
        }
    }
}

---

Canvas(modifier = Modifier.fillMaxSize()) {
    // Define the source rectangle, which specifies the portion of the image to display
    val sourceRect = Rect(left = 50f, top = 50f, right = 150f, bottom = 150f)
    
    // Define the destination rectangle, which specifies where to draw the portion of the image
    val destinationRect = Rect(left = 0f, top = 0f, right = 100f, bottom = 100f)
    
    // Draw the portion of the image using the DrawImage API
    drawImage(
        image = imageResource(R.drawable.my_image),
        srcOffset = Offset(x = sourceRect.left, y = sourceRect.top),
        srcSize = Size(width = sourceRect.width(), height = sourceRect.height()),
        dstOffset = Offset(x = destinationRect.left, y = destinationRect.top),
        dstSize = Size(width = destinationRect.width(), height = destinationRect.height())
    )
}