Makepad Map Widget Test App

Test application for the Makepad MapView widget - a cross-platform map component with OSM tile rendering.

Current Status (2026-01-23)

Working Features:

• OSM tile loading and rendering
• Mouse drag to pan
• Scroll wheel to zoom (cursor-anchored with dampening)
• Touch pan (single finger)
• Pinch-to-zoom (two fingers)
• Smooth fractional zoom with tile scaling
• Fallback tile rendering (shows lower-zoom tiles while loading)
• Dynamic min zoom (map always fills viewport)
• LRU tile cache (512 tiles max, ~128MB)
• Inertial scrolling (momentum after pan gesture)
• Map markers with labels (city pins with text)
• Marker click detection (shows clicked marker in panel)

Running

cargo run

Controls

Input	Action
Mouse drag	Pan the map
Scroll wheel	Zoom in/out
Touch drag	Pan (mobile)
Pinch	Zoom (mobile)
Click marker	Show marker info in panel

Project Structure

makepad-map-codex/
├── Cargo.toml              # Project config (depends on makepad-guofoo)
├── src/
│   ├── app.rs              # Test app with MapView widget
│   ├── lib.rs              # Library root
│   └── main.rs             # Entry point
└── docs/plans/
    ├── 2026-01-20-makepad-map-widget-design.md  # Architecture design
    └── 2026-01-21-fix-map-initial-load.md       # Bug fix plan (completed)

Widget Location

The MapView widget implementation is in the makepad-guofoo repository:

• /makepad-guofoo/widgets/src/map_view.rs

Known Issues / Future Work

• Keyboard navigation (arrow keys to pan, +/- to zoom)
• iOS/Android native backends

See docs/plans/2026-01-20-makepad-map-widget-design.md for full roadmap.