dpg-map/README.md

dpg-map

dpg-map is a Dear PyGui map widget package under rebuild.

The Step 4 tile manager is in place:

import dpg_map as dpgm

provider = dpgm.TileProvider(
    name="custom",
    url_template="https://example.com/{z}/{x}/{y}.png",
    attribution="Tiles (c) Example",
)
dpgm.register_provider(provider)

with dpgm.map_widget(tag="map", center=(47.9029, 1.9093), zoom=15):
    dpgm.add_marker("vehicle", lat=47.9029, lon=1.9093)

dpgm.update_marker("vehicle", lat=47.9030, lon=1.9094, map_tag="map")

Implemented so far:

• public package exports
• tile provider definitions and registry
• Web Mercator projection helpers
• thread-safe logical map state and map registry
• command queue with coalescing for overlay and view updates
• logical marker, polyline, trajectory, and layer models
• persistent disk cache paths, metadata, scanning, pruning, and clearing
• Dear PyGui child_window + measured-size drawlist widget shell
• GUI-thread frame pump that drains commands, manages textures, and draws raster tiles
• sizing helpers that preserve the last non-zero size across hidden layouts
• interaction hit-rectangle calculation for the measured map area
• asynchronous tile workers that read disk cache, fetch HTTP, and decode images
• memory cache with visible-tile protection and GUI-thread texture deletion

Overlay drawing is not implemented yet. Step 5 will add pan/zoom interaction and view command projection.

Examples:

uv run python examples/basic_map.py
uv run python examples/sizing_window.py
uv run python examples/sizing_child.py
uv run python examples/sizing_table.py
uv run python examples/hidden_tab.py
uv run python examples/cache_stress.py