jointjs/docs/src/joint/api/linkTools/Boundary.html

JavaScript diagramming library

<p>The <code>Boundary</code> link tool renders a rectangular border to show the bounding box of the link. It accepts one additional argument, which can be passed as an object to the link tool constructor:</p>

<table>
    <tr>
        <th>padding</th>
        <td><i>number</i></td>
        <td>This option determines whether the boundary area should be visually inflated and if so, by how much. Default is <code>10</code>.</td>
    </tr>
</table>

<p>Example:</p>

<pre><code>var boundaryTool = new joint.linkTools.Boundary({
    focusOpacity: 0.5,
    padding: 20
});</code></pre>