pages/01_leafmap.py

import leafmap
import solara
from leafmap.toolbar import change_basemap

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("OpenTopoMap")
        change_basemap(self)


@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,
        )
        solara.Text(f"Zoom: {zoom.value}")
        solara.Text(f"Center: {center.value}")