create-gojs-kit
Version:
A CLI for downloading GoJS samples, extensions, and docs
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HTML
<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="An interactive GoJS Diagram demonstrating viewports and document bounds and alignment and scaling." />
<meta itemprop="description" content="An interactive GoJS Diagram demonstrating viewports and document bounds and alignment and scaling." />
<meta property="og:description" content="An interactive GoJS Diagram demonstrating viewports and document bounds and alignment and scaling." />
<meta name="twitter:description" content="An interactive GoJS Diagram demonstrating viewports and document bounds and alignment and scaling." />
<link rel="preconnect" href="https://rsms.me/">
<link rel="stylesheet" href="../assets/css/style.css">
<!-- Copyright 1998-2025 by Northwoods Software Corporation. -->
<meta itemprop="name" content="Content Alignment Demonstration" />
<meta property="og:title" content="Content Alignment Demonstration" />
<meta name="twitter:title" content="Content Alignment Demonstration" />
<meta property="og:image" content="https://gojs.net/latest/assets/images/screenshots/contentalign.png" />
<meta itemprop="image" content="https://gojs.net/latest/assets/images/screenshots/contentalign.png" />
<meta name="twitter:image" content="https://gojs.net/latest/assets/images/screenshots/contentalign.png" />
<meta property="og:url" content="https://gojs.net/latest/samples/contentAlign.html" />
<meta property="twitter:url" content="https://gojs.net/latest/samples/contentAlign.html" />
<meta name="twitter:card" content="summary_large_image" />
<meta property="og:type" content="website" />
<meta property="twitter:domain" content="gojs.net" />
<title>
Content Alignment Demonstration | GoJS Diagramming Library
</title>
</head>
<body>
<!-- This top nav is not part of the sample code -->
<nav id="navTop" class=" w-full h-[var(--topnav-h)] z-30 bg-white border-b border-b-gray-200">
<div class="max-w-screen-xl mx-auto flex flex-wrap items-start justify-between px-4">
<a class="text-white bg-nwoods-primary font-bold !leading-[calc(var(--topnav-h)_-_1px)] my-0 px-2 text-4xl lg:text-5xl logo"
href="../">
GoJS
</a>
<div class="relative">
<button id="topnavButton" class="h-[calc(var(--topnav-h)_-_1px)] px-2 m-0 text-gray-900 bg-inherit shadow-none md:hidden hover:!bg-inherit hover:!text-nwoods-accent hover:!shadow-none" aria-label="Navigation">
<svg class="h-7 w-7 block" aria-hidden="true" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
<path d="M3.75 6.75h16.5M3.75 12h16.5m-16.5 5.25h16.5" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
</button>
<div id="topnavList" class="hidden md:block">
<div class="absolute right-0 z-30 flex flex-col items-end rounded border border-gray-200 p-4 pl-12 shadow bg-white text-gray-900 font-semibold
md:flex-row md:space-x-4 md:items-start md:border-0 md:p-0 md:shadow-none md:bg-inherit">
<a href="../learn/">Learn</a>
<a href="../samples/">Samples</a>
<a href="../intro/">Intro</a>
<a href="../api/">API</a>
<a href="../download.html">Download</a>
<a href="https://forum.nwoods.com/c/gojs/11" target="_blank" rel="noopener">Forum</a>
<a id="tc" href="https://nwoods.com/contact.html"
target="_blank" rel="noopener" onclick="getOutboundLink('https://nwoods.com/contact.html', 'contact');">Contact</a>
<a id="tb" href="https://nwoods.com/sales/index.html"
target="_blank" rel="noopener" onclick="getOutboundLink('https://nwoods.com/sales/index.html', 'buy');">Buy</a>
</div>
</div>
</div>
</div>
</nav>
<script>
window.addEventListener("DOMContentLoaded", function () {
// topnav
var topButton = document.getElementById("topnavButton");
var topnavList = document.getElementById("topnavList");
if (topButton && topnavList) {
topButton.addEventListener("click", function (e) {
topnavList
.classList
.toggle("hidden");
e.stopPropagation();
});
document.addEventListener("click", function (e) {
// if the clicked element isn't the list, close the list
if (!topnavList.classList.contains("hidden") && !e.target.closest("#topnavList")) {
topButton.click();
}
});
// set active <a> element
var url = window
.location
.href
.toLowerCase();
var aTags = topnavList.getElementsByTagName('a');
for (var i = 0; i < aTags.length; i++) {
var lowerhref = aTags[i]
.href
.toLowerCase();
if (lowerhref.endsWith('.html'))
lowerhref = lowerhref.slice(0, -5);
if (url.startsWith(lowerhref)) {
aTags[i]
.classList
.add('active');
break;
}
}
}
});
</script>
<div class="flex flex-col prose">
<div class="w-full max-w-screen-xl mx-auto">
<!-- * * * * * * * * * * * * * -->
<!-- Start of GoJS sample code -->
<script src="https://cdn.jsdelivr.net/npm/gojs@3.1.0"></script>
<div id="allSampleContent" class="p-4 w-full">
<script id="code">
function init() {
myDiagram = new go.Diagram('myDiagramDiv', {
'undoManager.isEnabled': true
});
for (var i = 0; i < 15; i++) {
myDiagram.add(
// add an unbound Node to the diagram at a random position
new go.Node({
position: new go.Point(Math.random() * 251, Math.random() * 251)
})
.add(
new go.Shape('Circle', {
fill: go.Brush.randomColor(150),
strokeWidth: 2,
desiredSize: new go.Size(30, 30)
})
)
);
}
// automatically update information in the panel
myDiagram.addDiagramListener('DocumentBoundsChanged', updateDOM);
myDiagram.addDiagramListener('ViewportBoundsChanged', updateDOM);
var myPosX = document.getElementById('positionX');
var myPosY = document.getElementById('positionY');
var myScale = document.getElementById('scale');
var myDocBounds = document.getElementById('docBounds');
function updateDOM(e) {
var d = e.diagram;
var pos = d.position;
myPosX.value = Math.round(pos.x, 2);
myPosY.value = Math.round(pos.y, 2);
myScale.value = d.scale;
var b = d.documentBounds;
myDocBounds.textContent = b.x.toFixed(2) + ', ' + b.y.toFixed(2) + ' ' + b.width.toFixed(2) + ' x ' + b.height.toFixed(2);
}
}
// disable all inputs and buttons in the specified element
function setDisabled(elem, isDisabled) {
for (let c of elem.children) {
if (c.tagName === 'INPUT' || c.tagName === 'BUTTON') {
c.disabled = !!isDisabled;
}
}
}
// occurs when one of the contentAlign radio buttons is clicked
function changeContentAlign(spot) {
myDiagram.startTransaction('');
myDiagram.contentAlignment = go.Spot[spot];
myDiagram.commitTransaction('');
setDisabled(document.getElementById('posP'), spot !== 'None');
}
function changePosition(posx, posy) {
myDiagram.startTransaction('');
var x = parseInt(posx);
var y = parseInt(posy);
myDiagram.position = new go.Point(x, y);
myDiagram.commitTransaction('');
}
function changeScale(scale) {
var scale = parseFloat(scale);
if (scale > 0) {
myDiagram.startTransaction('');
myDiagram.scale = scale;
myDiagram.commitTransaction('');
}
}
function changeFixedBounds(fx, fy, fw, fh) {
myDiagram.startTransaction('');
var x = parseFloat(fx);
var y = parseFloat(fy);
var h = parseFloat(fw);
var w = parseFloat(fh);
myDiagram.fixedBounds = new go.Rect(x, y, Math.max(1, w), Math.max(1, h));
myDiagram.commitTransaction('');
}
function changePadding(pt, pr, pb, pl) {
myDiagram.startTransaction('');
var t = parseFloat(pt);
var r = parseFloat(pr);
var b = parseFloat(pb);
var l = parseFloat(pl);
myDiagram.padding = new go.Margin(t, r, b, l);
myDiagram.commitTransaction('');
}
function changeAutoScale(scaleType) {
myDiagram.startTransaction('');
myDiagram.autoScale = go.Diagram[scaleType];
myDiagram.commitTransaction('');
setDisabled(document.getElementById('scaleP'), scaleType !== 'None');
}
window.addEventListener('DOMContentLoaded', init);
</script>
<div id="sample">
<div style="width: 100%; display: flex;flex-direction: row;flex-wrap: wrap; gap: 5px;">
<div style="flex: 1;min-width: 330px;">
<div id="myDiagramDiv" style="height: 400px; background: whitesmoke; border: solid 1px black"></div>
</div>
<div style="flex: 1; min-width: 330px;">
<div style="border: solid 1px black; padding: 5px">
Diagram.documentBounds:
<div id="docBounds" style="display: inline-block"></div>
<p id="alignP">
Diagram.contentAlignment:<br />
<input type="radio" name="contentAlign" onclick="changeContentAlign(this.id)" id="None" checked /><label for="None">None</label>
<input type="radio" name="contentAlign" onclick="changeContentAlign(this.id)" id="Center" /><label for="Center">Center</label><br />
<input type="radio" name="contentAlign" onclick="changeContentAlign(this.id)" id="Left" /><label for="Left">Left</label>
<input type="radio" name="contentAlign" onclick="changeContentAlign(this.id)" id="Right" /><label for="Right">Right</label><br />
<input type="radio" name="contentAlign" onclick="changeContentAlign(this.id)" id="Top" /><label for="Top">Top</label>
<input type="radio" name="contentAlign" onclick="changeContentAlign(this.id)" id="Bottom" /><label for="Bottom">Bottom</label><br />
</p>
<p id="posP">
Diagram.position:<br />
<input type="text" size="3" id="positionX" value="NaN" />
<input type="text" size="3" id="positionY" value="NaN" />
<button onclick="changePosition(positionX.value, positionY.value)">Set</button>
</p>
<p id="scaleP">
Diagram.scale:<br />
<input type="text" size="3" id="scale" value="1" />
<button onclick="changeScale(scale.value)">Set</button>
<button onclick="scale.value=1;changeScale(scale.value)">Reset</button>
</p>
<p id="fixedP">
Diagram.fixedBounds (x, y, width, height):<br />
<input type="text" size="3" id="fixedX" value="NaN" />
<input type="text" size="3" id="fixedY" value="NaN" />
<input type="text" size="3" id="fixedW" value="NaN" />
<input type="text" size="3" id="fixedH" value="NaN" />
<button id="fixedSet" onclick="changeFixedBounds(fixedX.value, fixedY.value, fixedW.value, fixedH.value)">Set</button>
<button onclick="fixedX.value=NaN;fixedY.value=NaN;fixedW.value=NaN;fixedH.value=NaN;fixedSet.onclick()">Reset</button>
</p>
<p id="padP">
Diagram.padding (top, right, bottom, left):<br />
<input type="text" size="3" id="padT" value="5" />
<input type="text" size="3" id="padR" value="5" />
<input type="text" size="3" id="padB" value="5" />
<input type="text" size="3" id="padL" value="5" />
<button onclick="changePadding(padT.value, padR.value, padB.value, padL.value)">Set</button>
</p>
<p id="autoP">
Diagram.autoScale:<br />
<input type="radio" name="autoScale" onclick="changeAutoScale(this.value)" id="DiagramNone" value="None" checked /><label for="DiagramNone"
>AutoScale.None</label
><br />
<input type="radio" name="autoScale" onclick="changeAutoScale(this.id)" id="Uniform" /><label for="Uniform">AutoScale.Uniform</label><br />
<input type="radio" name="autoScale" onclick="changeAutoScale(this.id)" id="UniformToFill" /><label for="UniformToFill">AutoScale.UniformToFill</label
><br />
(but no greater than CommandHandler.defaultScale)
</p>
<button onclick="myDiagram.commandHandler.zoomToFit()">Zoom to Fit</button>
</div>
</div>
</div>
<p>
A Diagram's <a>Diagram.contentAlignment</a> property determines how parts
are positioned when the <a>Diagram.viewportBounds</a> width or height is
different than the <a>Diagram.documentBounds</a> width or height.
</p>
<p>
<a>Diagram.position</a> changes where in the document the view port is located.
This means that <a>Diagram.position</a> is always equal to
<a>Diagram.viewportBounds</a> x and y.
</p>
<p>
<a>Diagram.scale</a> changes how zoomed in/out the diagram is.
</p>
<p>
<a>Diagram.fixedBounds</a> changes the bound returned by <a>Diagram.documentBounds</a>,
by default this is <code>NaN, NaN, NaN, NaN</code> meaning that <a>Diagram.documentBounds</a>
returns <a>Diagram.computeBounds</a>.
</p>
<p>
<a>Diagram.padding</a> is the extra space between the nodes and the edge of
the canvas.
</p>
<p>
<a>Diagram.autoScale</a> automatically sets the <a>Diagram.scale</a> and
<a>Diagram.position</a> of the diagram to fit the document bounds inside the
view. <a>AutoScale.Uniform</a> will fit the document to the view. <a>AutoScale.UniformToFill</a>
will scale and position the diagram such that in on direction it fits the
view, and the other requires a scroll bar.
</p>
</div>
</div>
<!-- * * * * * * * * * * * * * -->
<!-- End of GoJS sample code -->
</div>
<div id="allTagDescriptions" class="p-4 w-full max-w-screen-xl mx-auto">
<hr/>
<h3 class="text-xl">GoJS Features in this sample</h3>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>HTML Interaction</h4>
<p>
GoJS Diagrams can be used alongside other HTML elements in a webapp.
For custom Text Editors, Context Menus, and ToolTips, which are invoked and hidden via GoJS tool operations, it is best to use the <a href="../api/symbols/HTMLInfo.html" target="api">HTMLInfo</a> class.
</p>
<p>
More information can be found in the <a href="../intro/HTMLinteraction.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#html">Related samples</a>
</p>
<hr>
</div>
</div>
</body>
<!-- This script is part of the gojs.net website, and is not needed to run the sample -->
<script src="../assets/js/goSamples.js"></script>
</html>