From 5557d0878f6c291d13a727af3f4d31fa387c439d Mon Sep 17 00:00:00 2001
From: Nipun Batra <nipunbatra0@gmail.com>
Date: Fri, 25 Oct 2024 22:13:29 +0530
Subject: [PATCH] added changes

---
 .github/workflows/static.yml |  22 ++
 L.KML.js                     | 482 +++++++++++++++++++++++++++++++++++
 kml.html                     |  55 ++++
 3 files changed, 559 insertions(+)
 create mode 100644 .github/workflows/static.yml
 create mode 100644 L.KML.js
 create mode 100644 kml.html

diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
new file mode 100644
index 0000000..0a6bd18
--- /dev/null
+++ b/.github/workflows/static.yml
@@ -0,0 +1,22 @@
+# Simple workflow for deploying static content to GitHub Pages name: Deploy static content to Pages on:
+  # Runs on pushes targeting the default branch push:
+    branches: ["master"]
+  # Allows you to run this workflow manually from the Actions tab workflow_dispatch: # Sets permissions of the GITHUB_TOKEN to 
+allow deployment to GitHub Pages permissions:
+  contents: read pages: write id-token: write # Allow only one concurrent deployment, skipping runs queued between the run 
+in-progress and latest queued. # However, do NOT cancel in-progress runs as we want to allow these production deployments to 
+complete. concurrency:
+  group: "pages" cancel-in-progress: false jobs: # Single deploy job since we're just deploying deploy:
+    environment:
+      name: github-pages url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Pages
+        uses: actions/configure-pages@v5
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3 with:
+          # Upload entire repository path: '.'
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4
diff --git a/L.KML.js b/L.KML.js
new file mode 100644
index 0000000..2f05068
--- /dev/null
+++ b/L.KML.js
@@ -0,0 +1,482 @@
+/*!
+	Copyright (c) 2011-2015, Pavel Shramov, Bruno Bergot - MIT licence
+*/
+
+L.KML = L.FeatureGroup.extend({
+
+	initialize: function (kml, kmlOptions) {
+		this._kml = kml;
+		this._layers = {};
+		this._kmlOptions = kmlOptions;
+
+		if (kml) {
+			this.addKML(kml, kmlOptions);
+		}
+	},
+
+	addKML: function (xml, kmlOptions) {
+		var layers = L.KML.parseKML(xml, kmlOptions);
+		if (!layers || !layers.length) return;
+		for (var i = 0; i < layers.length; i++) {
+			this.fire('addlayer', {
+				layer: layers[i]
+			});
+			this.addLayer(layers[i]);
+		}
+		this.latLngs = L.KML.getLatLngs(xml);
+		this.fire('loaded');
+	},
+
+	latLngs: []
+});
+
+L.Util.extend(L.KML, {
+
+	parseKML: function (xml, kmlOptions) {
+		var style = this.parseStyles(xml, kmlOptions);
+		this.parseStyleMap(xml, style);
+		var el = xml.getElementsByTagName('Folder');
+		var layers = [], l;
+		for (var i = 0; i < el.length; i++) {
+			if (!this._check_folder(el[i])) { continue; }
+			l = this.parseFolder(el[i], style);
+			if (l) { layers.push(l); }
+		}
+		el = xml.getElementsByTagName('Placemark');
+		for (var j = 0; j < el.length; j++) {
+			if (!this._check_folder(el[j])) { continue; }
+			l = this.parsePlacemark(el[j], xml, style);
+			if (l) { layers.push(l); }
+		}
+		el = xml.getElementsByTagName('GroundOverlay');
+		for (var k = 0; k < el.length; k++) {
+			l = this.parseGroundOverlay(el[k]);
+			if (l) { layers.push(l); }
+		}
+		return layers;
+	},
+
+	// Return false if e's first parent Folder is not [folder]
+	// - returns true if no parent Folders
+	_check_folder: function (e, folder) {
+		e = e.parentNode;
+		while (e && e.tagName !== 'Folder')
+		{
+			e = e.parentNode;
+		}
+		return !e || e === folder;
+	},
+
+	parseStyles: function (xml, kmlOptions) {
+		var styles = {};
+		var sl = xml.getElementsByTagName('Style');
+		for (var i=0, len=sl.length; i<len; i++) {
+			var style = this.parseStyle(sl[i], kmlOptions);
+			if (style) {
+				var styleName = '#' + style.id;
+				styles[styleName] = style;
+			}
+		}
+		return styles;
+	},
+
+	parseStyle: function (xml, kmlOptions) {
+		var style = {}, poptions = {}, ioptions = {}, el, id;
+
+		var attributes = {color: true, width: true, Icon: true, href: true, hotSpot: true};
+
+		function _parse (xml) {
+			var options = {};
+			for (var i = 0; i < xml.childNodes.length; i++) {
+				var e = xml.childNodes[i];
+				var key = e.tagName;
+				if (!attributes[key]) { continue; }
+				if (key === 'hotSpot')
+				{
+					for (var j = 0; j < e.attributes.length; j++) {
+						options[e.attributes[j].name] = e.attributes[j].nodeValue;
+					}
+				} else {
+					var value = (e.childNodes && e.childNodes.length) ? e.childNodes[0].nodeValue : null;
+					if(!value) {
+						continue;
+					}
+					if (key === 'color') {
+						options.opacity = parseInt(value.substring(0, 2), 16) / 255.0;
+						options.color = '#' + value.substring(6, 8) + value.substring(4, 6) + value.substring(2, 4);
+					} else if (key === 'width') {
+						options.weight = parseInt(value);
+					} else if (key === 'Icon') {
+						ioptions = _parse(e);
+						if (ioptions.href) { options.href = ioptions.href; }
+					} else if (key === 'href') {
+						options.href = value;
+					}
+				}
+			}
+			return options;
+		}
+
+		el = xml.getElementsByTagName('LineStyle');
+		if (el && el[0]) { style = _parse(el[0]); }
+		el = xml.getElementsByTagName('PolyStyle');
+		if (el && el[0]) { poptions = _parse(el[0]); }
+		if (poptions.color) { style.fillColor = poptions.color; }
+		if (poptions.opacity) { style.fillOpacity = poptions.opacity; }
+		el = xml.getElementsByTagName('IconStyle');
+		if (el && el[0]) { ioptions = _parse(el[0]); }
+		if (ioptions.href) {
+			var iconOptions = {
+				iconUrl: ioptions.href,
+				shadowUrl: null,
+				anchorRef: {x: ioptions.x, y: ioptions.y},
+				anchorType:	{x: ioptions.xunits, y: ioptions.yunits}
+			};
+
+			if (typeof kmlOptions === "object" && typeof kmlOptions.iconOptions === "object") {
+				L.Util.extend(iconOptions, kmlOptions.iconOptions);
+			}
+
+			style.icon = new L.KMLIcon(iconOptions);
+		}
+
+		id = xml.getAttribute('id');
+		if (id && style) {
+			style.id = id;
+		}
+
+		return style;
+	},
+
+	parseStyleMap: function (xml, existingStyles) {
+		var sl = xml.getElementsByTagName('StyleMap');
+
+		for (var i = 0; i < sl.length; i++) {
+			var e = sl[i], el;
+			var smKey, smStyleUrl;
+
+			el = e.getElementsByTagName('key');
+			if (el && el[0]) { smKey = el[0].textContent; }
+			el = e.getElementsByTagName('styleUrl');
+			if (el && el[0]) { smStyleUrl = el[0].textContent; }
+
+			if (smKey === 'normal')
+			{
+				existingStyles['#' + e.getAttribute('id')] = existingStyles[smStyleUrl];
+			}
+		}
+
+		return;
+	},
+
+	parseFolder: function (xml, style) {
+		var el, layers = [], l;
+		el = xml.getElementsByTagName('Folder');
+		for (var i = 0; i < el.length; i++) {
+			if (!this._check_folder(el[i], xml)) { continue; }
+			l = this.parseFolder(el[i], style);
+			if (l) { layers.push(l); }
+		}
+		el = xml.getElementsByTagName('Placemark');
+		for (var j = 0; j < el.length; j++) {
+			if (!this._check_folder(el[j], xml)) { continue; }
+			l = this.parsePlacemark(el[j], xml, style);
+			if (l) { layers.push(l); }
+		}
+		el = xml.getElementsByTagName('GroundOverlay');
+		for (var k = 0; k < el.length; k++) {
+			if (!this._check_folder(el[k], xml)) { continue; }
+			l = this.parseGroundOverlay(el[k]);
+			if (l) { layers.push(l); }
+		}
+		if (!layers.length) { return; }
+		if (layers.length === 1) {
+			l = layers[0];
+		} else {
+			l = new L.FeatureGroup(layers);
+		}
+		el = xml.getElementsByTagName('name');
+		if (el.length && el[0].childNodes.length) {
+			l.options.name = el[0].childNodes[0].nodeValue;
+		}
+		return l;
+	},
+
+	parsePlacemark: function (place, xml, style, options) {
+		var h, i, j, k, el, il, opts = options || {};
+
+		el = place.getElementsByTagName('styleUrl');
+		for (i = 0; i < el.length; i++) {
+			var url = el[i].childNodes[0].nodeValue;
+			for (var a in style[url]) {
+				opts[a] = style[url][a];
+			}
+		}
+
+		il = place.getElementsByTagName('Style')[0];
+		if (il) {
+			var inlineStyle = this.parseStyle(place);
+			if (inlineStyle) {
+				for (k in inlineStyle) {
+					opts[k] = inlineStyle[k];
+				}
+			}
+		}
+
+		var multi = ['MultiGeometry', 'MultiTrack', 'gx:MultiTrack'];
+		for (h in multi) {
+			el = place.getElementsByTagName(multi[h]);
+			for (i = 0; i < el.length; i++) {
+				var layer = this.parsePlacemark(el[i], xml, style, opts);
+				if (layer === undefined)
+					continue;
+				this.addPlacePopup(place, layer);
+				return layer;
+			}
+		}
+
+		var layers = [];
+
+		var parse = ['LineString', 'Polygon', 'Point', 'Track', 'gx:Track'];
+		for (j in parse) {
+			var tag = parse[j];
+			el = place.getElementsByTagName(tag);
+			for (i = 0; i < el.length; i++) {
+				var l = this['parse' + tag.replace(/gx:/, '')](el[i], xml, opts);
+				if (l) { layers.push(l); }
+			}
+		}
+
+		if (!layers.length) {
+			return;
+		}
+		var layer = layers[0];
+		if (layers.length > 1) {
+			layer = new L.FeatureGroup(layers);
+		}
+
+		this.addPlacePopup(place, layer);
+		return layer;
+	},
+
+  addPlacePopup: function(place, layer) {
+    var el, i, j, name, descr = '';
+    el = place.getElementsByTagName('name');
+    if (el.length && el[0].childNodes.length) {
+      name = el[0].childNodes[0].nodeValue;
+    }
+    el = place.getElementsByTagName('description');
+    for (i = 0; i < el.length; i++) {
+      for (j = 0; j < el[i].childNodes.length; j++) {
+        descr = descr + el[i].childNodes[j].nodeValue;
+      }
+    }
+
+    if (name) {
+      layer.bindPopup('<h2>' + name + '</h2>' + descr, { className: 'kml-popup'});
+    }
+  },
+
+	parseCoords: function (xml) {
+		var el = xml.getElementsByTagName('coordinates');
+		return this._read_coords(el[0]);
+	},
+
+	parseLineString: function (line, xml, options) {
+		var coords = this.parseCoords(line);
+		if (!coords.length) { return; }
+		return new L.Polyline(coords, options);
+	},
+
+	parseTrack: function (line, xml, options) {
+		var el = xml.getElementsByTagName('gx:coord');
+		if (el.length === 0) { el = xml.getElementsByTagName('coord'); }
+		var coords = [];
+		for (var j = 0; j < el.length; j++) {
+			coords = coords.concat(this._read_gxcoords(el[j]));
+		}
+		if (!coords.length) { return; }
+		return new L.Polyline(coords, options);
+	},
+
+	parsePoint: function (line, xml, options) {
+		var el = line.getElementsByTagName('coordinates');
+		if (!el.length) {
+			return;
+		}
+		var ll = el[0].childNodes[0].nodeValue.split(',');
+		return new L.KMLMarker(new L.LatLng(ll[1], ll[0]), options);
+	},
+
+	parsePolygon: function (line, xml, options) {
+		var el, polys = [], inner = [], i, coords;
+		el = line.getElementsByTagName('outerBoundaryIs');
+		for (i = 0; i < el.length; i++) {
+			coords = this.parseCoords(el[i]);
+			if (coords) {
+				polys.push(coords);
+			}
+		}
+		el = line.getElementsByTagName('innerBoundaryIs');
+		for (i = 0; i < el.length; i++) {
+			coords = this.parseCoords(el[i]);
+			if (coords) {
+				inner.push(coords);
+			}
+		}
+		if (!polys.length) {
+			return;
+		}
+		if (options.fillColor) {
+			options.fill = true;
+		}
+		if (polys.length === 1) {
+			return new L.Polygon(polys.concat(inner), options);
+		}
+		return new L.MultiPolygon(polys, options);
+	},
+
+	getLatLngs: function (xml) {
+		var el = xml.getElementsByTagName('coordinates');
+		var coords = [];
+		for (var j = 0; j < el.length; j++) {
+			// text might span many childNodes
+			coords = coords.concat(this._read_coords(el[j]));
+		}
+		return coords;
+	},
+
+	_read_coords: function (el) {
+		var text = '', coords = [], i;
+		for (i = 0; i < el.childNodes.length; i++) {
+			text = text + el.childNodes[i].nodeValue;
+		}
+		text = text.split(/[\s\n]+/);
+		for (i = 0; i < text.length; i++) {
+			var ll = text[i].split(',');
+			if (ll.length < 2) {
+				continue;
+			}
+			coords.push(new L.LatLng(ll[1], ll[0]));
+		}
+		return coords;
+	},
+
+	_read_gxcoords: function (el) {
+		var text = '', coords = [];
+		text = el.firstChild.nodeValue.split(' ');
+		coords.push(new L.LatLng(text[1], text[0]));
+		return coords;
+	},
+
+	parseGroundOverlay: function (xml) {
+		var latlonbox = xml.getElementsByTagName('LatLonBox')[0];
+		var bounds = new L.LatLngBounds(
+			[
+				latlonbox.getElementsByTagName('south')[0].childNodes[0].nodeValue,
+				latlonbox.getElementsByTagName('west')[0].childNodes[0].nodeValue
+			],
+			[
+				latlonbox.getElementsByTagName('north')[0].childNodes[0].nodeValue,
+				latlonbox.getElementsByTagName('east')[0].childNodes[0].nodeValue
+			]
+		);
+		var attributes = {Icon: true, href: true, color: true};
+		function _parse (xml) {
+			var options = {}, ioptions = {};
+			for (var i = 0; i < xml.childNodes.length; i++) {
+				var e = xml.childNodes[i];
+				var key = e.tagName;
+				if (!attributes[key]) { continue; }
+				var value = e.childNodes[0].nodeValue;
+				if (key === 'Icon') {
+					ioptions = _parse(e);
+					if (ioptions.href) { options.href = ioptions.href; }
+				} else if (key === 'href') {
+					options.href = value;
+				} else if (key === 'color') {
+					options.opacity = parseInt(value.substring(0, 2), 16) / 255.0;
+					options.color = '#' + value.substring(6, 8) + value.substring(4, 6) + value.substring(2, 4);
+				}
+			}
+			return options;
+		}
+		var options = {};
+		options = _parse(xml);
+		if (latlonbox.getElementsByTagName('rotation')[0] !== undefined) {
+			var rotation = latlonbox.getElementsByTagName('rotation')[0].childNodes[0].nodeValue;
+			options.rotation = parseFloat(rotation);
+		}
+		return new L.RotatedImageOverlay(options.href, bounds, {opacity: options.opacity, angle: options.rotation});
+	}
+
+});
+
+L.KMLIcon = L.Icon.extend({
+	options: {
+		iconSize: [32, 32],
+		iconAnchor: [16, 16],
+	},
+	_setIconStyles: function (img, name) {
+		L.Icon.prototype._setIconStyles.apply(this, [img, name]);
+	},
+	_createImg: function (src, el) {
+		el = el || document.createElement('img');
+		el.onload = this.applyCustomStyles.bind(this,el)
+		el.src = src;
+		return el;
+	},
+	applyCustomStyles: function(img) {
+		var options = this.options;
+		var width = options.iconSize[0];
+		var height = options.iconSize[1];
+
+		this.options.popupAnchor = [0,(-0.83*height)];
+		if (options.anchorType.x === 'fraction')
+			img.style.marginLeft = (-options.anchorRef.x * width) + 'px';
+		if (options.anchorType.y === 'fraction')
+			img.style.marginTop  = ((-(1 - options.anchorRef.y) * height) + 1) + 'px';
+		if (options.anchorType.x === 'pixels')
+			img.style.marginLeft = (-options.anchorRef.x) + 'px';
+		if (options.anchorType.y === 'pixels')
+			img.style.marginTop  = (options.anchorRef.y - height + 1) + 'px';
+	}
+});
+
+
+L.KMLMarker = L.Marker.extend({
+	options: {
+		icon: new L.KMLIcon.Default()
+	}
+});
+
+// Inspired by https://github.com/bbecquet/Leaflet.PolylineDecorator/tree/master/src
+L.RotatedImageOverlay = L.ImageOverlay.extend({
+	options: {
+		angle: 0
+	},
+	_reset: function () {
+		L.ImageOverlay.prototype._reset.call(this);
+		this._rotate();
+	},
+	_animateZoom: function (e) {
+		L.ImageOverlay.prototype._animateZoom.call(this, e);
+		this._rotate();
+	},
+	_rotate: function () {
+        if (L.DomUtil.TRANSFORM) {
+            // use the CSS transform rule if available
+            this._image.style[L.DomUtil.TRANSFORM] += ' rotate(' + this.options.angle + 'deg)';
+        } else if (L.Browser.ie) {
+            // fallback for IE6, IE7, IE8
+            var rad = this.options.angle * (Math.PI / 180),
+                costheta = Math.cos(rad),
+                sintheta = Math.sin(rad);
+            this._image.style.filter += ' progid:DXImageTransform.Microsoft.Matrix(sizingMethod=\'auto expand\', M11=' +
+                costheta + ', M12=' + (-sintheta) + ', M21=' + sintheta + ', M22=' + costheta + ')';
+        }
+	},
+	getBounds: function () {
+		return this._bounds;
+	}
+});
diff --git a/kml.html b/kml.html
new file mode 100644
index 0000000..0b49a78
--- /dev/null
+++ b/kml.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>Dynamic KML Map</title>
+        <link rel="stylesheet" href="https://unpkg.com/leaflet@1.4.0/dist/leaflet.css" />
+        <script src="https://unpkg.com/leaflet@1.4.0/dist/leaflet.js"></script>
+        <script src="./L.KML.js"></script> <!-- Make sure this file is in the repo -->
+    </head>
+    <body>
+        <div style="width: 100vw; height: 100vh" id="map"></div>
+        <script type="text/javascript">
+            // Helper function to get URL parameters
+            function getParameterByName(name, url = window.location.href) {
+                name = name.replace(/[\[\]]/g, '\\$&');
+                const regex = new RegExp('[?&]' + name + '(=([^&#]*)|&|#|$)');
+                const results = regex.exec(url);
+                if (!results) return null;
+                if (!results[2]) return '';
+                return decodeURIComponent(results[2].replace(/\+/g, ' '));
+            }
+
+            // Get the KML URL from the URL parameter
+            const kmlUrl = getParameterByName('kml_url');
+
+            if (kmlUrl) {
+                // Initialize map
+                const map = new L.Map('map', { center: new L.LatLng(58.4, 43.0), zoom: 11 });
+                //const osm = new L.TileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png');
+                //const osm = new L.TileLayer('https://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}');
+                const osm = new L.TileLayer('http://mt1.google.com/vt/lyrs=s&x={x}&y={y}&z={z}');
+                map.addLayer(osm);
+
+                // Load the KML file from the given URL
+                fetch(kmlUrl)
+                    .then(res => res.text())
+                    .then(kmltext => {
+                        const parser = new DOMParser();
+                        const kml = parser.parseFromString(kmltext, 'text/xml');
+                        const track = new L.KML(kml);
+                        map.addLayer(track);
+
+                        // Adjust map to show the KML
+                        const bounds = track.getBounds();
+                        map.fitBounds(bounds);
+                    })
+                    .catch(error => {
+                        console.error('Error loading KML:', error);
+                        alert('Failed to load KML file. Please check the URL.');
+                    });
+            } else {
+                alert('No KML URL provided. Please use the "kml_url" parameter in the URL.');
+            }
+        </script>
+    </body>
+</html>