gojs
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Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
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<html lang="en">
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no, viewport-fit=cover"/>
<meta name="description" content="A demonstration of the RescalingTool extension."/>
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<title>Rescaling GraphObjects using the RescalingTool</title>
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<body>
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<h1 class="my-0 p-1 ">GoJS</h1>
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<!-- * * * * * * * * * * * * * -->
<!-- Start of GoJS sample code -->
<div id="allSampleContent" class="p-4 w-full">
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:400px"></div>
<p>
Selecting a node will show a rescaling handle that when dragged will modify the node's <a>GraphObject.scale</a> property.
</p>
<p>
Just as the <a>ResizingTool</a> changes the <a>GraphObject.desiredSize</a> of an object,
and just as the <a>RotatingTool</a> changes the <a>GraphObject.angle</a> of an object,
the <a>RescalingTool</a> changes the <a>GraphObject.scale</a> of an object.
</p>
<p>
This extension tool is defined in its own file, as <a href="RescalingTool.js" target="_blank">RescalingTool.js</a>.
</p>
</div>
<script type="module" id="code">
import * as go from "../release/go-module.js";
import { RescalingTool } from "./RescalingTool.js";
if (window.goSamples) goSamples(); // init for these samples -- you don't need to call this
const $ = go.GraphObject.make; // for conciseness in defining templates
const myDiagram = new go.Diagram("myDiagramDiv", // create a Diagram for the DIV HTML element
{
layout: $(go.TreeLayout),
"undoManager.isEnabled": true // enable undo & redo
});
// install the RescalingTool as a mouse-down tool
myDiagram.toolManager.mouseDownTools.add(new RescalingTool());
myDiagram.nodeTemplate =
$(go.Node, "Auto",
{ locationSpot: go.Spot.Center },
new go.Binding("scale").makeTwoWay(),
$(go.Shape, "RoundedRectangle", { strokeWidth: 0 },
new go.Binding("fill", "color")),
$(go.TextBlock,
{ margin: 8 },
new go.Binding("text"))
);
// but use the default Link template, by not setting Diagram.linkTemplate
// create the model data that will be represented by Nodes and Links
myDiagram.model = new go.GraphLinksModel(
[
{ key: 1, text: "Alpha", color: "lightblue" },
{ key: 2, text: "Beta", color: "orange" },
{ key: 3, text: "Gamma", color: "lightgreen" },
{ key: 4, text: "Delta", color: "pink" }
],
[
{ from: 1, to: 2 },
{ from: 1, to: 3 },
{ from: 3, to: 4 }
]);
window.myDiagram = myDiagram; // Attach to the window for console debugging
</script>
</div>
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