markgojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
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HTML
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Balloon Links</title>
<meta name="description" content="A demonstration of the BalloonLink extension." />
<!-- Copyright 1998-2019 by Northwoods Software Corporation. -->
<meta charset="UTF-8">
<script src="../release/go.js"></script>
<script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
<script src="BalloonLink.js"></script>
<script id="code">
function init() {
if (window.goSamples) goSamples(); // init for these samples -- you don't need to call this
var $ = go.GraphObject.make; // for conciseness in defining templates
myDiagram = $(go.Diagram, "myDiagramDiv", // create a Diagram for the DIV HTML element
{
initialContentAlignment: go.Spot.Center, // center the content
"undoManager.isEnabled": true // enable undo & redo
});
// define a simple Node template
myDiagram.nodeTemplate =
$(go.Node, "Auto", // the Shape will go around the TextBlock
$(go.Shape, "Rectangle", { strokeWidth: 0 },
// Shape.fill is bound to Node.data.color
new go.Binding("fill", "color")),
$(go.TextBlock,
{ margin: 8 }, // some room around the text
// TextBlock.text is bound to Node.data.key
new go.Binding("text", "key"))
);
myDiagram.linkTemplate =
$(BalloonLink,
$(go.Shape,
{ stroke: "limegreen", strokeWidth: 3, fill: "limegreen" }
)
);
// create the model data that will be represented by Nodes and Links
myDiagram.model = new go.GraphLinksModel(
[
{ key: "Alpha", color: "lightblue" },
{ key: "Beta", color: "orange" }
],
[
{ from: "Alpha", to: "Beta" }
]);
}
</script>
</head>
<body onload="init()">
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; width:300px; height:300px"></div>
<p>
A <b>BalloonLink</b> is a custom <a>Link</a> that draws a "balloon" shape around the Link.fromNode.
It will create a triangular shape with the base at the fromNode and the other point at the toNode.
It is defined in its own file, as <a href="BalloonLink.js">BalloonLink.js</a>.
</p>
<p>
Usage can also be seen in the <a href="../samples/comments.html">Comments</a> sample.
</p>
</div>
</body>
</html>