Add Leaflet MasterCluster plugin

plugins/tiddlywiki/geospatial/files/leaflet.markercluster/MIT-LICENCE.txt

@@ -0,0 +1,20 @@
+Copyright 2012 David Leaver
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

plugins/tiddlywiki/geospatial/files/leaflet.markercluster/MarkerCluster.Default.css

@@ -0,0 +1,60 @@
+.marker-cluster-small {
+	background-color: rgba(181, 226, 140, 0.6);
+	}
+.marker-cluster-small div {
+	background-color: rgba(110, 204, 57, 0.6);
+	}
+
+.marker-cluster-medium {
+	background-color: rgba(241, 211, 87, 0.6);
+	}
+.marker-cluster-medium div {
+	background-color: rgba(240, 194, 12, 0.6);
+	}
+
+.marker-cluster-large {
+	background-color: rgba(253, 156, 115, 0.6);
+	}
+.marker-cluster-large div {
+	background-color: rgba(241, 128, 23, 0.6);
+	}
+
+	/* IE 6-8 fallback colors */
+.leaflet-oldie .marker-cluster-small {
+	background-color: rgb(181, 226, 140);
+	}
+.leaflet-oldie .marker-cluster-small div {
+	background-color: rgb(110, 204, 57);
+	}
+
+.leaflet-oldie .marker-cluster-medium {
+	background-color: rgb(241, 211, 87);
+	}
+.leaflet-oldie .marker-cluster-medium div {
+	background-color: rgb(240, 194, 12);
+	}
+
+.leaflet-oldie .marker-cluster-large {
+	background-color: rgb(253, 156, 115);
+	}
+.leaflet-oldie .marker-cluster-large div {
+	background-color: rgb(241, 128, 23);
+}
+
+.marker-cluster {
+	background-clip: padding-box;
+	border-radius: 20px;
+	}
+.marker-cluster div {
+	width: 30px;
+	height: 30px;
+	margin-left: 5px;
+	margin-top: 5px;
+
+	text-align: center;
+	border-radius: 15px;
+	font: 12px "Helvetica Neue", Arial, Helvetica, sans-serif;
+	}
+.marker-cluster span {
+	line-height: 30px;
+	}

plugins/tiddlywiki/geospatial/files/leaflet.markercluster/MarkerCluster.css

@@ -0,0 +1,14 @@
+.leaflet-cluster-anim .leaflet-marker-icon, .leaflet-cluster-anim .leaflet-marker-shadow {
+	-webkit-transition: -webkit-transform 0.3s ease-out, opacity 0.3s ease-in;
+	-moz-transition: -moz-transform 0.3s ease-out, opacity 0.3s ease-in;
+	-o-transition: -o-transform 0.3s ease-out, opacity 0.3s ease-in;
+	transition: transform 0.3s ease-out, opacity 0.3s ease-in;
+}
+
+.leaflet-cluster-spider-leg {
+	/* stroke-dashoffset (duration and function) should match with leaflet-marker-icon transform in order to track it exactly */
+	-webkit-transition: -webkit-stroke-dashoffset 0.3s ease-out, -webkit-stroke-opacity 0.3s ease-in;
+	-moz-transition: -moz-stroke-dashoffset 0.3s ease-out, -moz-stroke-opacity 0.3s ease-in;
+	-o-transition: -o-stroke-dashoffset 0.3s ease-out, -o-stroke-opacity 0.3s ease-in;
+	transition: stroke-dashoffset 0.3s ease-out, stroke-opacity 0.3s ease-in;
+}

plugins/tiddlywiki/geospatial/files/leaflet.markercluster/tiddlywiki.files

@@ -0,0 +1,31 @@
+{
+	"tiddlers": [
+		{
+			"file": "leaflet.markercluster.js",
+			"fields": {
+				"type": "application/javascript",
+				"title": "$:/plugins/tiddlywiki/geospatial/leaflet.markercluster.js",
+				"module-type": "library"
+			},
+			"prefix": "",
+			"suffix": ""
+		},
+		{
+			"file": "MarkerCluster.css",
+			"fields": {
+				"type": "text/css",
+				"title": "$:/plugins/tiddlywiki/geospatial/leaflet.MarkerCluster.css",
+				"tags": "[[$:/tags/Stylesheet]]"
+			},
+			"prefix": "",
+			"suffix": ""
+		},
+		{
+			"file": "MIT-LICENCE.txt",
+			"fields": {
+				"type": "text/plain",
+				"title": "$:/plugins/tiddlywiki/geospatial/leaflet.markercluster/LICENSE"
+			}
+		}
+	]
+}

plugins/tiddlywiki/geospatial/license.tid

@@ -5,5 +5,6 @@ This plugin is part of TiddlyWiki 5 and is licensed with TiddlyWiki's 3-clause B
 It incorporates the following third-party libraries with their own licenses:
 
 * [[Leaflet.js|https://leafletjs.com/]] license -- $:/plugins/tiddlywiki/geospatial/leaflet.js/LICENSE
+* [[Leaflet.mastercluster|https://github.com/Leaflet/Leaflet.markercluster]] license -- $:/plugins/tiddlywiki/geospatial/leaflet.markercluster/LICENSE
 * [[Turf.js|https://turfjs.org/]] license -- $:/plugins/tiddlywiki/geospatial/turf.js/LICENSE
 * [[OpenLocationCode|https://github.com/google/open-location-code]] license -- $:/plugins/tiddlywiki/geospatial/openlocationcode/LICENSE