Stacked Bar Chart

// Stacked Bar Chart · syxUI · https://syxui.dev/components/chart-stacked
// Free in any project. Keep this line and credit syxUI where a person can read it.

import SwiftUI

extension View {
    func formaCard(_ pad: CGFloat = 18) -> some View {
        self.padding(pad)
            .background(Color(.systemBackground), in: RoundedRectangle(cornerRadius: 20, style: .continuous))
            .overlay(RoundedRectangle(cornerRadius: 20, style: .continuous).stroke(Color.primary.opacity(0.06), lineWidth: 1))
            .shadow(color: .black.opacity(0.05), radius: 14, x: 0, y: 6)
    }
}

struct CardHeader: View {
    let label: String; let value: String; var trend: String? = nil
    var body: some View {
        HStack(alignment: .firstTextBaseline) {
            VStack(alignment: .leading, spacing: 3) {
                Text(label).font(.system(size: 13, weight: .medium)).foregroundStyle(.secondary)
                Text(value).font(.system(size: 26, weight: .bold))
            }
            Spacer()
            if let trend {
                Text(trend).font(.system(size: 12, weight: .semibold))
                    .padding(.horizontal, 8).padding(.vertical, 3)
                    .background(Color.primary.opacity(0.06), in: Capsule())
            }
        }
    }
}
// 9. Stacked bar
struct StackedBarCard: View {
    let data: [[Double]] = [[0.3, 0.2, 0.1], [0.35, 0.25, 0.15], [0.25, 0.3, 0.12], [0.4, 0.2, 0.2], [0.3, 0.35, 0.18]]
    let months = ["Jan", "Feb", "Mar", "Apr", "May"]
    var body: some View {
        VStack(alignment: .leading, spacing: 16) {
            Text("Quarterly mix").font(.system(size: 15, weight: .semibold))
            HStack(alignment: .bottom, spacing: 16) {
                ForEach(data.indices, id: \.self) { i in
                    VStack(spacing: 5) {
                        VStack(spacing: 2) {
                            ForEach(data[i].indices, id: \.self) { j in
                                RoundedRectangle(cornerRadius: 2).fill(Color.primary.opacity(1 - Double(j) * 0.3))
                                    .frame(height: 150 * data[i][j])
                            }
                        }
                        Text(months[i]).font(.system(size: 10)).foregroundStyle(.tertiary)
                    }
                }
            }
        }
        .formaCard()
    }
}