StudyCardDeck2.kt

@Composable
fun StudyCardDeck(
    current: Int,
    visible: Int,
    dataSource: List<StudyCard>
) {
    val topCardIdx = 0
    val count = dataSource.size
    val visibleCards: Int = StrictMath.min(visible, dataSource.size - current)

    Box(Modifier.fillMaxSize()) {
        repeat(visibleCards) { idx ->
            // index in data source
            val index = current + idx
            val card = dataSource[index]
            val colorIndex = card.index % colors.size
            val cardColor = colors[colorIndex]
            val data = card.frontVal
            val zIndex = 100f - idx
            val scaleX = calculateScale(idx)
            val offsetY = calculateOffset(idx)
            val cardModifier = Modifier
                .scale(scaleX, 1f)
                .offset { IntOffset(0, offsetY) }
                .align(Alignment.TopCenter)
                .zIndex(zIndex)
                .size(cardWidth, cardHeight)

            StudyCardView(
                backgroundColor = cardColor,
                side = CardFlipState.FRONT_FACE,
                modifier = cardModifier,
                content = { frontSideColor ->
                    StudyCardsContent(
                        data, frontSideColor
                    )
                },
                bottomBar = { frontSideColor ->
                    if (idx == topCardIdx) {
                        StudyCardsBottomBar(
                            card.index, count, CardFlipState.FRONT_FACE, frontSideColor,
                            leftActionHandler = { buttonOnSide ->
                            },
                            rightActionHandler = { }
                        )
                    }
                }
            )
        }
    }
}