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leaflet_osm_basemaps()

Description

Generates OpenStreetMap basemaps for use in a Leaflet map.

This function defines various tile layers from OpenStreetMap and related providers,
setting properties such as caching, retina display support, maximum zoom levels,
and attribution for each layer.

Parameters

This function accepts no parameters.

Return

string JavaScript code that initializes the OSM basemaps for Leaflet.

Location

include/map_functions.php lines 18 to 88

Definition

 
function leaflet_osm_basemaps() 
    {
    global $map_default_cache, $map_retina;

    return "<!--OpenStreetMap (OSM) basemap group-->
        var osm_attribute = 'Map data © <a href=\"http://openstreetmap.org\">OpenStreetMap</a> contributors';

        var osm_mapnik = L.tileLayer.provider('OpenStreetMap.Mapnik', {
            useCache: '" . ( $map_default_cache ? "true" : "false" ) . "',
            detectRetina: '" . ( $map_retina ? "true" : "false" ) . "',
            maxZoom: 19,
            attribution: osm_attribute
        });

        var osm_de = L.tileLayer.provider('OpenStreetMap.DE', {
            useCache: '" . ( $map_default_cache ? "true" : "false" ) . "',
            detectRetina: '" . ( $map_retina ? "true" : "false" ) . "',
            maxZoom: 18,
            attribution: osm_attribute
        });

        var osm_fr_attribute = '&copy; Openstreetmap France | &copy; <a href=\"http://www.openstreetmap.org/copyright\">OpenStreetMap</a>';
        var osm_fr = L.tileLayer.provider('OpenStreetMap.France', {
            useCache: '" . ( $map_default_cache ? "true" : "false" ) . "',
            detectRetina: '" . ( $map_retina ? "true" : "false" ) . "',
            maxZoom: 20,
            attribution: osm_fr_attribute
        });

        var osm_ch = L.tileLayer.provider('OpenStreetMap.CH', {
            useCache: '" . ( $map_default_cache ? "true" : "false" ) . "',
            detectRetina: '" . ( $map_retina ? "true" : "false" ) . "',
            maxZoom: 18,
            attribution: osm_attribute
        });

        var osm_bzh = L.tileLayer.provider('OpenStreetMap.BZH', {
            useCache: '" . ( $map_default_cache ? "true" : "false" ) . "',
            detectRetina: '" . ( $map_retina ? "true" : "false" ) . "',
            maxZoom: 19,
            attribution: osm_attribute
        });

        var osm_hot = L.tileLayer.provider('OpenStreetMap.HOT', {
            useCache: '" . ( $map_default_cache ? "true" : "false" ) . "',
            detectRetina: '" . ( $map_retina ? "true" : "false" ) . "',
            maxZoom: 19,
            attribution: osm_attribute
        });

        var osm_hikebike = L.tileLayer.provider('HikeBike.HikeBike', {
            useCache: '" . ( $map_default_cache ? "true" : "false" ) . "',
            detectRetina: '" . ( $map_retina ? "true" : "false" ) . "',
            maxZoom: 19,
            attribution: osm_attribute
        });

        var osm_mtb = L.tileLayer.provider('MtbMap', {
            useCache: '" . ( $map_default_cache ? "true" : "false" ) . "',
            detectRetina: '" . ( $map_retina ? "true" : "false" ) . "',
            attribution: osm_attribute
        });

        var osm_otm_attribute = 'Map data: &copy; <a href=\"http://www.openstreetmap.org/copyright\">OpenStreetMap</a>, <a href=\"http://viewfinderpanoramas.org\">SRTM</a> | Map style: &copy; <a href=\"https://opentopomap.org\">OpenTopoMap</a> (<a href=\"https://creativecommons.org/licenses/by-sa/3.0/\">CC-BY-SA</a>)';
        var osm_otm = L.tileLayer.provider('OpenTopoMap', {
            useCache: '" . ( $map_default_cache ? "true" : "false" ) . "',
            detectRetina: '" . ( $map_retina ? "true" : "false" ) . "',
            maxZoom: 17,
            attribution: osm_otm_attribute
        }); ";
    }

This article was last updated 4th December 2024 08:35 Europe/London time based on the source file dated 22nd November 2024 15:35 Europe/London time.