Add pmtiles

Dockerfile

@@ -16,6 +16,7 @@ USER root
 RUN chown -R ${NB_UID} ${HOME}
 RUN apt-get update && apt-get install -y git
 RUN pip install -U git+https://github.com/giswqs/ipyleaflet.git@pmtiles
+RUN pip install -U git+https://github.com/opengeos/leafmap.git
 USER ${NB_USER}
 
 EXPOSE 8765

pages/03_pmtiles.py

@@ -0,0 +1,88 @@
+import leafmap
+import solara
+
+
+zoom = solara.reactive(2)
+center = solara.reactive((20, 0))
+
+
+class Map(leafmap.Map):
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        # Add what you want below
+
+        self.add_basemap('CartoDB.DarkMatter')
+        url = "https://storage.googleapis.com/ahp-research/overture/pmtiles/overture.pmtiles"
+
+        style={
+            "version": 8,
+            "sources": {
+                "example_source": {
+                    "type": "vector",
+                    "url": "pmtiles://" + url,
+                    "attribution": 'PMTiles',
+                }
+            },
+            "layers": [
+                {
+                    "id": "admins",
+                    "source": "example_source",
+                    "source-layer": "admins",
+                    "type": "fill",
+                    "paint": {"fill-color": "#BDD3C7", "fill-opacity": 0.1},
+                },
+                {
+                    "id": "buildings",
+                    "source": "example_source",
+                    "source-layer": "buildings",
+                    "type": "fill",
+                    "paint": {"fill-color": "#FFFFB3", "fill-opacity": 0.5},
+                },
+                {
+                    "id": "places",
+                    "source": "example_source",
+                    "source-layer": "places",
+                    "type": "fill",
+                    "paint": {"fill-color": "#BEBADA", "fill-opacity": 0.5},
+                },
+                {
+                    "id": "roads",
+                    "source": "example_source",
+                    "source-layer": "roads",
+                    "type": "line",
+                    "paint": {"line-color": "#FB8072"},
+                },
+            ],
+        }
+
+        self.add_pmtiles(url, name='PMTiles', style=style)
+
+        legend_dict = {
+            'admins': 'BDD3C7',
+            'buildings': 'FFFFB3',
+            'places': 'BEBADA',
+            'roads': 'FB8072',
+        }
+
+        self.add_legend(legend_dict=legend_dict)
+
+
+@solara.component
+def Page():
+    with solara.Column(style={"min-width": "500px"}):
+        # solara components support reactive variables
+        # solara.SliderInt(label="Zoom level", value=zoom, min=1, max=20)
+        # using 3rd party widget library require wiring up the events manually
+        # using zoom.value and zoom.set
+        Map.element(  # type: ignore
+            zoom=zoom.value,
+            on_zoom=zoom.set,
+            center=center.value,
+            on_center=center.set,
+            scroll_wheel_zoom=True,
+            toolbar_ctrl=False,
+            data_ctrl=False,
+            height="780px",
+        )
+        solara.Text(f"Zoom: {zoom.value}")
+        solara.Text(f"Center: {center.value}")