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177 lines
5.4 KiB
177 lines
5.4 KiB
<!doctype html>
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<html>
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<head>
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<title>Network | Navigation</title>
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<style type="text/css">
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body {
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font: 10pt sans;
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}
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#mynetwork {
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width: 600px;
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height: 600px;
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border: 1px solid lightgray;
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}
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table.legend_table {
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font-size: 11px;
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border-width:1px;
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border-color:#d3d3d3;
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border-style:solid;
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}
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table.legend_table,td {
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border-width:1px;
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border-color:#d3d3d3;
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border-style:solid;
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padding: 2px;
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}
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div.table_content {
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width:80px;
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text-align:center;
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}
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div.table_description {
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width:100px;
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}
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</style>
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<script type="text/javascript" src="../../dist/vis.js"></script>
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<link type="text/css" rel="stylesheet" href="../../dist/vis.css">
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<script type="text/javascript">
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var nodes = null;
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var edges = null;
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var network = null;
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function destroy() {
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if (network !== null) {
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network.destroy();
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network = null;
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}
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}
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function draw() {
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destroy();
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nodes = [];
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edges = [];
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var connectionCount = [];
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// randomly create some nodes and edges
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var nodeCount = document.getElementById('nodeCount').value;
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for (var i = 0; i < nodeCount; i++) {
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nodes.push({
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id: i,
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label: String(i)
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});
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connectionCount[i] = 0;
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// create edges in a scale-free-network way
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if (i == 1) {
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var from = i;
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var to = 0;
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edges.push({
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from: from,
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to: to
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});
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connectionCount[from]++;
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connectionCount[to]++;
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}
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else if (i > 1) {
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var conn = edges.length * 2;
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var rand = Math.floor(Math.random() * conn);
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var cum = 0;
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var j = 0;
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while (j < connectionCount.length && cum < rand) {
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cum += connectionCount[j];
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j++;
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}
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var from = i;
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var to = j;
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edges.push({
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from: from,
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to: to
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});
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connectionCount[from]++;
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connectionCount[to]++;
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}
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}
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// create a network
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var container = document.getElementById('mynetwork');
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var data = {
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nodes: nodes,
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edges: edges
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};
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var options = {
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stabilize: false,
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navigation: true,
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keyboard: true
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};
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network = new vis.Network(container, data, options);
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// add event listeners
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network.on('select', function(params) {
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document.getElementById('selection').innerHTML = 'Selection: ' + params.nodes;
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});
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}
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</script>
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</head>
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<body onload="draw();">
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<h2>Navigation controls and keyboad navigation</h2>
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<div style="width: 800px; font-size:14px; text-align: justify;">
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This example is the same as example 2, except for the navigation controls that have been activated. The navigation controls are described below. <br /><br />
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<table class="legend_table">
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<tr>
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<td>Icons: </td>
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<td><div class="table_content"><img src="../../dist/img/network/upArrow.png" /> </div></td>
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<td><div class="table_content"><img src="../../dist/img/network/downArrow.png" /> </div></td>
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<td><div class="table_content"><img src="../../dist/img/network/leftArrow.png" /> </div></td>
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<td><div class="table_content"><img src="../../dist/img/network/rightArrow.png" /> </div></td>
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<td><div class="table_content"><img src="../../dist/img/network/plus.png" /> </div></td>
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<td><div class="table_content"><img src="../../dist/img/network/minus.png" /> </div></td>
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<td><div class="table_content"><img src="../../dist/img/network/zoomExtends.png" /> </div></td>
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</tr>
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<tr>
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<td><div class="table_description">Keyboard shortcuts:</div></td>
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<td><div class="table_content">Up arrow</div></td>
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<td><div class="table_content">Down arrow</div></td>
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<td><div class="table_content">Left arrow</div></td>
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<td><div class="table_content">Right arrow</div></td>
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<td><div class="table_content">=<br />[<br />Page up</div></td>
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<td><div class="table_content">-<br />]<br />Page down</div></td>
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<td><div class="table_content">None</div></td>
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</tr>
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<tr>
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<td><div class="table_description">Description:</div></td>
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<td><div class="table_content">Move up</div></td>
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<td><div class="table_content">Move down</div></td>
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<td><div class="table_content">Move left</div></td>
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<td><div class="table_content">Move right</div></td>
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<td><div class="table_content">Zoom in</div></td>
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<td><div class="table_content">Zoom out</div></td>
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<td><div class="table_content">Zoom extent</div></td>
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</tr>
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</table>
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<br />
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Apart from clicking the icons, you can also navigate using the keyboard. The buttons are in table above.
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Zoom Extends changes the zoom and position of the camera to encompass all visible nodes. <u>To correctly display the navigation icons, the <b>vis.css</b> file must be included.</u>
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The user is free to alter or overload the CSS classes but without them the navigation icons are not visible.
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</div>
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<br />
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<form onsubmit="draw(); return false;">
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<label for="nodeCount">Number of nodes:</label>
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<input id="nodeCount" type="text" value="25" style="width: 50px;">
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<input type="submit" value="Go">
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</form>
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<br>
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<div id="mynetwork"></div>
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<p id="selection"></p>
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</body>
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</html>
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