Draggable floating panel in SwiftUI. See use case: https://youtu.be/10Ee-BAxGug

DraggablePanel.swift

import SwiftUI

// Generated using ChatGPT 4o
// Prompts:
// - "How to quickly make a panel using SwiftUI on macOS that can be dragged around inside a window?"
// - "Let's make it take content as closure"

struct DraggablePanel<Content: View>: View {
    @State private var offset = CGSize.zero
    @State private var dragOffset = CGSize.zero

    let content: () -> Content

    var body: some View {
        VStack {
            content()
        }
        .frame(width: 200, height: 500)
        .background(RoundedRectangle(cornerRadius: 10).fill(.black).opacity(0.7).shadow(radius: 8))
        .offset(x: offset.width + dragOffset.width, y: offset.height + dragOffset.height)
        .gesture(
            DragGesture()
                .onChanged { gesture in
                    dragOffset = gesture.translation
                }
                .onEnded { _ in
                    offset.width += dragOffset.width
                    offset.height += dragOffset.height
                    dragOffset = .zero
                }
        )
    }
}