Chartsanimated

Stacked bars

A stacked column chart where each category's segments grow up in layers.

Installation

caveui components are copy-paste Jetpack Compose built entirely on Material 3 — there's no caveui dependency to add. Make sure Material 3 is on your classpath (it ships with the Compose BOM), then copy the Usage snippet below into your project.

kotlin

// build.gradle.kts (module)
dependencies {
    implementation(platform("androidx.compose:compose-bom:2025.06.00"))
    implementation("androidx.compose.material3:material3")
}

Usage

kotlin

@Composable
fun StackedBars(
    cols: List<List<Float>> = listOf(
        listOf(0.3f, 0.25f, 0.2f), listOf(0.4f, 0.2f, 0.15f),
        listOf(0.25f, 0.35f, 0.18f), listOf(0.45f, 0.22f, 0.2f),
        listOf(0.3f, 0.3f, 0.25f),
    ),
    palette: List<Color> = listOf(Color(0xFF6366F1), Color(0xFF22D3EE), Color(0xFFA78BFA)),
    modifier: Modifier = Modifier,
) {
    val grow by animateFloatAsState(1f, tween(1000, easing = EaseOutCubic), label = "g")
    Canvas(modifier.fillMaxWidth().height(130.dp)) {
        val gap = 12.dp.toPx()
        val bw = (size.width - gap * (cols.size - 1)) / cols.size
        cols.forEachIndexed { i, segs ->
            val x = i * (bw + gap)
            var yBottom = size.height
            segs.forEachIndexed { s, frac ->
                val h = size.height * frac * grow
                drawRect(palette[s], Offset(x, yBottom - h), Size(bw, h))
                yBottom -= h
            }
        }
    }
}