Feature Request: Absolute Positioning Support (anchor to specific view/coordinates)

[videni]

Problem Description

Currently, MijickPopups only supports three fixed positions: TopPopup, CenterPopup, and BottomPopup. However, there are common UI patterns that require positioning a popup relative to a specific anchor view (e.g., showing a dropdown menu below a toolbar button with an arrow pointing to it).

Use Case

I have a toolbar with a bookmark button. When tapped, a navigation panel should appear:

• Anchored below the button
• With an arrow pointing to the button
• Positioned at a specific screen location (e.g., left edge of the screen, below the toolbar)

This is a very common pattern in productivity apps (like Notes, Files, PDF readers).

Current Solution

I'm currently using Popovers library for this:

.popover(
    present: $isVisible,
    attributes: {
        $0.position = .absolute(
            originAnchor: .bottomLeft,
            popoverAnchor: .topLeft
        )
        $0.sourceFrameInset.bottom = -offsetY
        $0.sourceFrameInset.left = offsetX
    }
) {
    MyPopupContent()
}

However, I prefer MijickPopups for its cleaner API, better animations, and bottom sheet support. It would be great to consolidate into one library.

Proposed API

struct MyDropdown: AnchoredPopup {
    var body: some View {
        // Popup content
    }
    
    func configurePopup(config: AnchoredPopupConfig) -> AnchoredPopupConfig {
        config
            .originAnchor(.bottomLeft)      // Anchor point on the source view
            .popupAnchor(.topLeft)          // Anchor point on the popup
            .offset(x: 0, y: 8)             // Additional offset
            .showArrow(true)                // Optional arrow pointing to source
            .arrowDirection(.up)
    }
}

// Usage
Button("Bookmark") {
    Task { await MyDropdown().present(anchoredTo: buttonFrame) }
}

Additional Consideration: Responsive Fallback

It would be even better if the popup could automatically fall back to BottomPopup style on compact screens (iPhone), similar to how native SwiftUI .popover() becomes a sheet on iPhone:

func configurePopup(config: AnchoredPopupConfig) -> AnchoredPopupConfig {
    config
        .originAnchor(.bottomLeft)
        .popupAnchor(.topLeft)
        .compactFallback(.bottom)  // On iPhone, show as bottom sheet instead
}

Benefits

1. Complete popup solution - One library for all positioning needs
2. Common UI pattern - Dropdown menus, toolbar popovers, context menus
3. Consistent experience - Same animation system and API style

Environment

• MijickPopups version: 4.0.5
• iOS: 16.0+
• Platforms: iPhone, iPad, Mac Catalyst

Thank you for considering this feature!