Add OpenTopoMap as an available baselayer

close #23

StaticMap.php

@@ -47,6 +47,12 @@ class StaticMap {
             'logo' => 'osm_logo.png',
             'url'  => 'https://tile.openstreetmap.org/{Z}/{X}/{Y}.png'
         ),
+        // OpenTopoMap sources
+        'opentopomap' => array(
+            'txt'  => '(c) OpenStreetMap data/ODbl, SRTM | style: (c) OpenTopoMap',
+            'logo' => 'osm_logo.png',
+            'url'  => 'https:/tile.opentopomap.org/{Z}/{X}/{Y}.png'
+        ),
         // OCM sources
         'cycle'         => array(
             'txt'  => '(c) Thunderforest maps',

plugin.info.txt

@@ -1,7 +1,7 @@
 base   openlayersmap
 author Mark C. Prins
 email  mprins@users.sf.net
-date   2022-07-19
+date   2022-08-20
 name   OpenLayers map plugin for DokuWiki
 desc   Provides a syntax for rendering an OpenLayers based map in a wiki page. Uses OpenLayers 6.14.1
 url    https://www.dokuwiki.org/plugin:openlayersmap

script.js

@@ -119,6 +119,20 @@ function createMap(mapOpts, poi) {
                 source:  new ol.source.OSM()
             }));
 
+        baseLyrGroup.getLayers().push(
+            new ol.layer.Tile({
+                visible: mapOpts.baselyr === "opentopomap",
+                title:   'opentopomap',
+                type:    'base',
+                source:  new ol.source.OSM({
+                    url:          'https://{a-c}.tile.opentopomap.org/{z}/{x}/{y}.png',
+                    attributions: 'Data &copy;ODbL <a href="https://openstreetmap.org/copyright" target="_blank">OpenStreetMap</a>, '
+                                      + '<a href="http://viewfinderpanoramas.org" target="_blank">SRTM</a>, '
+                                      + 'style &copy;<a href="https://opentopomap.org/" target="_blank">OpenTopoMap</a>'
+                                      + '(<a href="https://creativecommons.org/licenses/by-sa/3.0/">CC-BY-SA</a>)'
+                })
+            }));
+
         baseLyrGroup.getLayers().push(
             new ol.layer.Tile({
                 visible: mapOpts.baselyr === "cycle map",