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mxgraph

javascript

examples

map.html

map.html 8.72 KB

<html>
<html>
<head>
	<title>Google maps example for mxGraph</title>
 <meta charset="utf-8">
 <title>Adding a Custom Overlay</title>
 <style>
 html, body, #map-canvas {
 height: 100%;
 margin: 0px;
 padding: 0px
 }
 </style>
 <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
 
	
	<script type="text/javascript">
		mxBasePath = '../src';
	</script>

<script type="text/javascript" src="../src/js/mxClient.js"></script>

<script type="text/javascript">
		// Keeps the font sizes independent of the scale
		mxCellRenderer.prototype.getTextScale = function(state)
		{
			return 1;
		};
		
		// This example creates a custom overlay called mxGraphOverlay, containing
		// a mxGraph container.

// Set the custom overlay object's prototype to a new instance
		// of OverlayView. In effect, this will subclass the overlay class.
		// Note that we set the prototype to an instance, rather than the
		// parent class itself, because we do not wish to modify the parent class.

var overlay;
		mxGraphOverlay.prototype = new google.maps.OverlayView();

// Initialize the map and the custom overlay.
		function initialize()
		{
		 var mapOptions = {
		 zoom: 4,
		 center: new google.maps.LatLng(34, -96),
		 mapTypeId: google.maps.MapTypeId.ROADMAP,
		 styles: [{featureType: "road", stylers: [{visibility: "off"}]},
		 {"elementType": "labels", "stylers": [{"visibility": "off" }]}]
		 };

var map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);

var swBound = new google.maps.LatLng(18, -126);
		 var neBound = new google.maps.LatLng(50, -65);
		 var bounds = new google.maps.LatLngBounds(swBound, neBound);

// The custom mxGraphOverlay object contains the graph,
		 // the bounds of the graph, and a reference to the map.
		 overlay = new mxGraphOverlay(bounds, map);
		}

function mxGraphOverlay(bounds, map)
		{
		 // Initialize all properties.
		 this.bounds_ = bounds;
		 this.map_ = map;

// Define a property to hold the graph's div. We'll
		 // actually create this div upon receipt of the onAdd()
		 // method so we'll leave it null for now.
		 this.div_ = null;

// Explicitly call setMap on this overlay.
		 this.setMap(map);
		}

/**
		 * onAdd is called when the map's panes are ready and the overlay has been
		 * added to the map.
		 */
		mxGraphOverlay.prototype.onAdd = function()
		{
			var div = document.createElement('div');
			div.style.borderStyle = 'none';
			div.style.borderWidth = '0px';
			div.style.overflow = 'visible';
			div.style.position = 'absolute';

// Allows labels to be rendered outside the container
			mxClient.NO_FO = true;
			
			// Creates the graph inside the given container
			var graph = new mxGraph(div);
			graph.setHtmlLabels(true);
			graph.view.setTranslate(4, 4);
			
			// Sets default vertex style
			var style = new Object();
			style[mxConstants.STYLE_SHAPE] = mxConstants.SHAPE_ELLIPSE;
			style[mxConstants.STYLE_PERIMETER] = mxPerimeter.EllipsePerimeter;
			style[mxConstants.STYLE_FILLCOLOR] = '#8CCDF5';
			style[mxConstants.STYLE_STROKECOLOR] = '#1B78C8';
			style[mxConstants.STYLE_FONTCOLOR] = '#000000';
			style[mxConstants.STYLE_OPACITY] = '50';
			style[mxConstants.STYLE_FONTSIZE] = '16';
			graph.getStylesheet().putDefaultVertexStyle(style);
			
			// Gets label from custom user object
			graph.convertValueToString = function(cell)
			{
				return (cell.value != null && cell.value.label != null) ? cell.value.label : mxGraph.prototype.convertValueToString.apply(this, arguments);
			};
			
			// Implements level of detail
			graph.isCellVisible = function(cell)
			{
				return (cell.value != null && cell.value.minScale != null) ? cell.value.minScale <= this.view.scale : mxGraph.prototype.isCellVisible.apply(this, arguments);
			};
			
			// Enables rubberband selection
			new mxRubberband(graph);
			
			// Gets the default parent for inserting new cells. This
			// is normally the first child of the root (ie. layer 0).
			var parent = graph.getDefaultParent();
							
			// Adds cells to the model in a single step
			graph.getModel().beginUpdate();
			try
			{
				var n1 = graph.insertVertex(parent, null, {label:'Seattle'}, 23, 23, 10, 10);
				var n2 = graph.insertVertex(parent, null, {label:'Sunnyvale'}, 25.76, 148.4, 10, 10);
				var n3 = graph.insertVertex(parent, null, {label:'Los Angeles'}, 59.8, 185.25, 10, 10);
				var n4 = graph.insertVertex(parent, null, {label:'Denver'}, 179.39, 121.25, 10, 10);
				var n5 = graph.insertVertex(parent, null, {label:'Kansas'}, 273.30, 128.63, 10, 10);
				var n6 = graph.insertVertex(parent, null, {label:'Houston'}, 266.36, 230.7, 10, 10);
				var n7 = graph.insertVertex(parent, null, {label:'Chicago'}, 336, 95.67, 10, 10);
				var n8 = graph.insertVertex(parent, null, {label:'Indianapolis'}, 349.38, 120.85, 10, 10);
				var n9 = graph.insertVertex(parent, null, {label:'Atlanta'}, 365.23, 188.51, 10, 10);
				var n10 = graph.insertVertex(parent, null, {label:'New York'}, 458.83, 109.61, 10, 10);
				var n11 = graph.insertVertex(parent, null, {label:'Washington'}, 432.93, 129.52, 10, 10);
				
				// This node and its connections are only visible for zoom 200% and above
				var n12 = graph.insertVertex(parent, null, {label:'Columbus', minScale:2}, 380, 120, 10, 10);
				
				var estyle = 'strokeWidth=2;endArrow=none;labelBackgroundColor=white;';
				var e = [graph.insertEdge(parent, null, '', n1, n2, estyle),
				 graph.insertEdge(parent, null, '', n2, n3, estyle),
				 graph.insertEdge(parent, null, '', n1, n4, estyle),
				 graph.insertEdge(parent, null, '', n2, n4, estyle),
				 graph.insertEdge(parent, null, '', n3, n6, estyle),
				 graph.insertEdge(parent, null, '', n4, n5, estyle),
				 graph.insertEdge(parent, null, '', n5, n6, estyle),
				 graph.insertEdge(parent, null, '', n5, n8, estyle),
				 graph.insertEdge(parent, null, '', n6, n9, estyle),
				 graph.insertEdge(parent, null, '', n8, n7, estyle),
				 graph.insertEdge(parent, null, '', n7, n10, estyle),
				 graph.insertEdge(parent, null, '', n9, n11, estyle),
				 graph.insertEdge(parent, null, '', n10, n11, estyle),
				 graph.insertEdge(parent, null, '', n8, n9, estyle),
				 graph.insertEdge(parent, null, '', n8, n12, estyle),
				 graph.insertEdge(parent, null, '', n12, n11, estyle)];
			}
			finally
			{
				// Updates the display
				graph.getModel().endUpdate();
			}
			
			// Writes some random numbers on the connections
			window.setInterval(function()
			{
				graph.getModel().beginUpdate();
				try
				{
					for (var i = 0; i < e.length; i++)
					{
						var rnd = Math.random();
						graph.getModel().setValue(e[i], Math.round(rnd * 100));
					}
				}
				finally
				{
					graph.getModel().endUpdate();
				}
			}, 1000);
			
			this.graph_ = graph;
			this.div_ = div;
			
			// Add the element to the "overlayLayer" pane.
			var panes = this.getPanes();
			panes.overlayLayer.appendChild(div);
		};

mxGraphOverlay.prototype.draw = function()
		{
		 // We use the south-west and north-east
		 // coordinates of the overlay to peg it to the correct position and size.
		 // To do this, we need to retrieve the projection from the overlay.
		 var overlayProjection = this.getProjection();

// Retrieve the south-west and north-east coordinates of this overlay
		 // in LatLngs and convert them to pixel coordinates.
		 // We'll use these coordinates to resize the div.
		 var sw = overlayProjection.fromLatLngToDivPixel(this.bounds_.getSouthWest());
		 var ne = overlayProjection.fromLatLngToDivPixel(this.bounds_.getNorthEast());

// Resize the graph's div to fit the indicated dimensions.
		 var div = this.div_;
		 div.style.left = sw.x + 'px';
		 div.style.top = ne.y + 'px';
		 var w = (ne.x - sw.x);
		 var h = (sw.y - ne.y);
		 div.style.width = w + 'px';
		 div.style.height = h + 'px';
		 
		 // Sets the scale of the graph based on reference width
		 this.graph_.view.setScale(w / 550);
		};

// The onRemove() method will be called automatically from the API if
		// we ever set the overlay's map property to 'null'.
		mxGraphOverlay.prototype.onRemove = function()
		{
		 this.div_.parentNode.removeChild(this.div_);
		 this.div_ = null;
		};

google.maps.event.addDomListener(window, 'load', initialize);
	</script>
</head>

<body>
	<div id="map-canvas"></div>
</body>
</html>

一键复制编辑原始数据按行查看历史

Gaudenz Alder 提交于 2014年10月03日 20:49 +08:00 . 3.1.0.0 release

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247

<!--
 Copyright (c) 2006-2013, JGraph Ltd

 Map example for mxGraph. This example demonstrates using
 a graph container as a Google Maps overlay.
-->
<html>
<html>
<head>
	<title>Google maps example for mxGraph</title>
 <meta charset="utf-8">
 <title>Adding a Custom Overlay</title>
 <style>
 html, body, #map-canvas {
 height: 100%;
 margin: 0px;
 padding: 0px
 }
 </style>
 <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
 
	<!-- Sets the basepath for the library if not in same directory -->
	<script type="text/javascript">
		mxBasePath = '../src';
	</script>

	<!-- Loads and initializes the library -->
	<script type="text/javascript" src="../src/js/mxClient.js"></script>

	<!-- Example code -->
	<script type="text/javascript">
		// Keeps the font sizes independent of the scale
		mxCellRenderer.prototype.getTextScale = function(state)
		{
			return 1;
		};
		
		// This example creates a custom overlay called mxGraphOverlay, containing
		// a mxGraph container.

		// Set the custom overlay object's prototype to a new instance
		// of OverlayView. In effect, this will subclass the overlay class.
		// Note that we set the prototype to an instance, rather than the
		// parent class itself, because we do not wish to modify the parent class.

		var overlay;
		mxGraphOverlay.prototype = new google.maps.OverlayView();

		// Initialize the map and the custom overlay.
		function initialize()
		{
		 var mapOptions = {
		 zoom: 4,
		 center: new google.maps.LatLng(34, -96),
		 mapTypeId: google.maps.MapTypeId.ROADMAP,
		 styles: [{featureType: "road", stylers: [{visibility: "off"}]},
		 {"elementType": "labels", "stylers": [{"visibility": "off" }]}]
		 };

		 var map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);

		 var swBound = new google.maps.LatLng(18, -126);
		 var neBound = new google.maps.LatLng(50, -65);
		 var bounds = new google.maps.LatLngBounds(swBound, neBound);

		 // The custom mxGraphOverlay object contains the graph,
		 // the bounds of the graph, and a reference to the map.
		 overlay = new mxGraphOverlay(bounds, map);
		}

		function mxGraphOverlay(bounds, map)
		{
		 // Initialize all properties.
		 this.bounds_ = bounds;
		 this.map_ = map;

		 // Define a property to hold the graph's div. We'll
		 // actually create this div upon receipt of the onAdd()
		 // method so we'll leave it null for now.
		 this.div_ = null;

		 // Explicitly call setMap on this overlay.
		 this.setMap(map);
		}

		/**
		 * onAdd is called when the map's panes are ready and the overlay has been
		 * added to the map.
		 */
		mxGraphOverlay.prototype.onAdd = function()
		{
			var div = document.createElement('div');
			div.style.borderStyle = 'none';
			div.style.borderWidth = '0px';
			div.style.overflow = 'visible';
			div.style.position = 'absolute';

			// Allows labels to be rendered outside the container
			mxClient.NO_FO = true;
			
			// Creates the graph inside the given container
			var graph = new mxGraph(div);
			graph.setHtmlLabels(true);
			graph.view.setTranslate(4, 4);
			
			// Sets default vertex style
			var style = new Object();
			style[mxConstants.STYLE_SHAPE] = mxConstants.SHAPE_ELLIPSE;
			style[mxConstants.STYLE_PERIMETER] = mxPerimeter.EllipsePerimeter;
			style[mxConstants.STYLE_FILLCOLOR] = '#8CCDF5';
			style[mxConstants.STYLE_STROKECOLOR] = '#1B78C8';
			style[mxConstants.STYLE_FONTCOLOR] = '#000000';
			style[mxConstants.STYLE_OPACITY] = '50';
			style[mxConstants.STYLE_FONTSIZE] = '16';
			graph.getStylesheet().putDefaultVertexStyle(style);
			
			// Gets label from custom user object
			graph.convertValueToString = function(cell)
			{
				return (cell.value != null && cell.value.label != null) ? cell.value.label : mxGraph.prototype.convertValueToString.apply(this, arguments);
			};
			
			// Implements level of detail
			graph.isCellVisible = function(cell)
			{
				return (cell.value != null && cell.value.minScale != null) ? cell.value.minScale <= this.view.scale : mxGraph.prototype.isCellVisible.apply(this, arguments);
			};
			
			// Enables rubberband selection
			new mxRubberband(graph);
			
			// Gets the default parent for inserting new cells. This
			// is normally the first child of the root (ie. layer 0).
			var parent = graph.getDefaultParent();
							
			// Adds cells to the model in a single step
			graph.getModel().beginUpdate();
			try
			{
				var n1 = graph.insertVertex(parent, null, {label:'Seattle'}, 23, 23, 10, 10);
				var n2 = graph.insertVertex(parent, null, {label:'Sunnyvale'}, 25.76, 148.4, 10, 10);
				var n3 = graph.insertVertex(parent, null, {label:'Los Angeles'}, 59.8, 185.25, 10, 10);
				var n4 = graph.insertVertex(parent, null, {label:'Denver'}, 179.39, 121.25, 10, 10);
				var n5 = graph.insertVertex(parent, null, {label:'Kansas'}, 273.30, 128.63, 10, 10);
				var n6 = graph.insertVertex(parent, null, {label:'Houston'}, 266.36, 230.7, 10, 10);
				var n7 = graph.insertVertex(parent, null, {label:'Chicago'}, 336, 95.67, 10, 10);
				var n8 = graph.insertVertex(parent, null, {label:'Indianapolis'}, 349.38, 120.85, 10, 10);
				var n9 = graph.insertVertex(parent, null, {label:'Atlanta'}, 365.23, 188.51, 10, 10);
				var n10 = graph.insertVertex(parent, null, {label:'New York'}, 458.83, 109.61, 10, 10);
				var n11 = graph.insertVertex(parent, null, {label:'Washington'}, 432.93, 129.52, 10, 10);
				
				// This node and its connections are only visible for zoom 200% and above
				var n12 = graph.insertVertex(parent, null, {label:'Columbus', minScale:2}, 380, 120, 10, 10);
				
				var estyle = 'strokeWidth=2;endArrow=none;labelBackgroundColor=white;';
				var e = [graph.insertEdge(parent, null, '', n1, n2, estyle),
				 graph.insertEdge(parent, null, '', n2, n3, estyle),
				 graph.insertEdge(parent, null, '', n1, n4, estyle),
				 graph.insertEdge(parent, null, '', n2, n4, estyle),
				 graph.insertEdge(parent, null, '', n3, n6, estyle),
				 graph.insertEdge(parent, null, '', n4, n5, estyle),
				 graph.insertEdge(parent, null, '', n5, n6, estyle),
				 graph.insertEdge(parent, null, '', n5, n8, estyle),
				 graph.insertEdge(parent, null, '', n6, n9, estyle),
				 graph.insertEdge(parent, null, '', n8, n7, estyle),
				 graph.insertEdge(parent, null, '', n7, n10, estyle),
				 graph.insertEdge(parent, null, '', n9, n11, estyle),
				 graph.insertEdge(parent, null, '', n10, n11, estyle),
				 graph.insertEdge(parent, null, '', n8, n9, estyle),
				 graph.insertEdge(parent, null, '', n8, n12, estyle),
				 graph.insertEdge(parent, null, '', n12, n11, estyle)];
			}
			finally
			{
				// Updates the display
				graph.getModel().endUpdate();
			}
			
			// Writes some random numbers on the connections
			window.setInterval(function()
			{
				graph.getModel().beginUpdate();
				try
				{
					for (var i = 0; i < e.length; i++)
					{
						var rnd = Math.random();
						graph.getModel().setValue(e[i], Math.round(rnd * 100));
					}
				}
				finally
				{
					graph.getModel().endUpdate();
				}
			}, 1000);
			
			this.graph_ = graph;
			this.div_ = div;
			
			// Add the element to the "overlayLayer" pane.
			var panes = this.getPanes();
			panes.overlayLayer.appendChild(div);
		};

		mxGraphOverlay.prototype.draw = function()
		{
		 // We use the south-west and north-east
		 // coordinates of the overlay to peg it to the correct position and size.
		 // To do this, we need to retrieve the projection from the overlay.
		 var overlayProjection = this.getProjection();

		 // Retrieve the south-west and north-east coordinates of this overlay
		 // in LatLngs and convert them to pixel coordinates.
		 // We'll use these coordinates to resize the div.
		 var sw = overlayProjection.fromLatLngToDivPixel(this.bounds_.getSouthWest());
		 var ne = overlayProjection.fromLatLngToDivPixel(this.bounds_.getNorthEast());

		 // Resize the graph's div to fit the indicated dimensions.
		 var div = this.div_;
		 div.style.left = sw.x + 'px';
		 div.style.top = ne.y + 'px';
		 var w = (ne.x - sw.x);
		 var h = (sw.y - ne.y);
		 div.style.width = w + 'px';
		 div.style.height = h + 'px';
		 
		 // Sets the scale of the graph based on reference width
		 this.graph_.view.setScale(w / 550);
		};

		// The onRemove() method will be called automatically from the API if
		// we ever set the overlay's map property to 'null'.
		mxGraphOverlay.prototype.onRemove = function()
		{
		 this.div_.parentNode.removeChild(this.div_);
		 this.div_ = null;
		};

		google.maps.event.addDomListener(window, 'load', initialize);
	</script>
</head>

<!-- Page passes the container for the graph to the program -->
<body>
	<div id="map-canvas"></div>
</body>
</html>