calculateDrawSize() and toIntPx() helper functions

ParallaxCarouselExtensions.kt

// Function to calculate draw size for the image
private fun ImageBitmap.calculateDrawSize(density: Float, screenWidth: Dp, pagerHeight: Dp): IntSize {
    val originalImageWidth = width / density
    val originalImageHeight = height / density

    val frameAspectRatio = screenWidth / pagerHeight
    val imageAspectRatio = originalImageWidth / originalImageHeight

    val drawWidth = xOffset + if (frameAspectRatio > imageAspectRatio) {
        screenWidth.value
    } else {
        pagerHeight.value * imageAspectRatio
    }

    val drawHeight = if (frameAspectRatio > imageAspectRatio) {
        screenWidth.value / imageAspectRatio
    } else {
        pagerHeight.value
    }

    return IntSize(drawWidth.toIntPx(density), drawHeight.toIntPx(density))
}

// Extension function to convert Float to Int in pixels
private fun Float.toIntPx(density: Float) = (this * density).roundToInt()