gojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
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HTML
<html>
<head>
<meta charset="UTF-8">
<title>Grid Layout</title>
<meta name="description" content="Interactive demonstration of layout-on-a-grid features by the GridLayout class." />
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Copyright 1998-2020 by Northwoods Software Corporation. -->
<script src="../release/go.js"></script>
<script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
<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", // must be the ID or reference to div
{
layout: $(go.GridLayout,
{ comparer: go.GridLayout.smartComparer })
// other properties are set by the layout function, defined below
});
// define the Node template
myDiagram.nodeTemplate =
$(go.Node, "Spot",
// make sure the Node.location is different from the Node.position
{ locationSpot: go.Spot.Center },
new go.Binding("text", "text"), // for sorting
$(go.Shape, "Ellipse",
{
fill: "lightgray",
stroke: null,
desiredSize: new go.Size(30, 30)
},
new go.Binding("fill", "fill"),
new go.Binding("desiredSize", "size")),
$(go.TextBlock,
// the default alignment is go.Spot.Center
new go.Binding("text", "text"))
);
// create an array of data describing randomly colored and sized nodes
var nodeDataArray = [];
for (var i = 0; i < 100; i++) {
nodeDataArray.push({
key: i,
text: i.toString(),
fill: go.Brush.randomColor(),
size: new go.Size(30 + Math.floor(Math.random() * 50), 30 + Math.floor(Math.random() * 50))
});
}
// randomize the data
for (i = 0; i < nodeDataArray.length; i++) {
var swap = Math.floor(Math.random() * nodeDataArray.length);
var temp = nodeDataArray[swap];
nodeDataArray[swap] = nodeDataArray[i];
nodeDataArray[i] = temp;
}
// create a Model that does not know about link or group relationships
myDiagram.model = new go.Model(nodeDataArray);
// layout using the latest parameters
layout();
}
// Update the layout from the controls, and then perform the layout again
function layout() {
myDiagram.startTransaction("change Layout");
var lay = myDiagram.layout;
var wrappingColumn = document.getElementById("wrappingColumn").value;
lay.wrappingColumn = parseFloat(wrappingColumn, 10);
var wrappingWidth = document.getElementById("wrappingWidth").value;
lay.wrappingWidth = parseFloat(wrappingWidth, 10);
var cellSize = document.getElementById("cellSize").value;
lay.cellSize = go.Size.parse(cellSize);
var spacing = document.getElementById("spacing").value;
lay.spacing = go.Size.parse(spacing);
var alignment = getRadioValue("alignment");
if (alignment === "Position") {
lay.alignment = go.GridLayout.Position;
} else {
lay.alignment = go.GridLayout.Location;
}
var arrangement = getRadioValue("arrangement");
if (arrangement === "LeftToRight") {
lay.arrangement = go.GridLayout.LeftToRight;
} else {
lay.arrangement = go.GridLayout.RightToLeft;
}
var sorting = document.getElementById("sorting").value;
switch (sorting) {
default:
case "Forward": lay.sorting = go.GridLayout.Forward; break;
case "Reverse": lay.sorting = go.GridLayout.Reverse; break;
case "Ascending": lay.sorting = go.GridLayout.Ascending; break;
case "Descending": lay.sorting = go.GridLayout.Descending; break;
}
myDiagram.commitTransaction("change Layout");
}
function getRadioValue(name) {
var radio = document.getElementsByName(name);
for (var i = 0; i < radio.length; i++) {
if (radio[i].checked) return radio[i].value;
}
}
</script>
</head>
<body onload="init()">
<div id="sample">
<div style="margin-bottom: 5px; padding: 5px; background-color: aliceblue">
<span style="display: inline-block; vertical-align: top; padding: 5px">
<b>GridLayout Properties</b>
<br />
Wrapping Column:
<input type="text" size="3" id="wrappingColumn" value="NaN" onchange="layout()" />
(NaN means there's no limit)
<br />
Wrapping Width:
<input type="text" size="3" id="wrappingWidth" value="NaN" onchange="layout()" />
(NaN means use the diagram's viewport width)
<br />
Cell Size:
<input type="text" size="8" id="cellSize" value="NaN NaN" onchange="layout()" />
(NaN x NaN means use a cell size big enough to hold any node)
<br />
Spacing:
<input type="text" size="8" id="spacing" value="10 10" onchange="layout()" />
(the minimum space between the nodes)
<br />
Alignment:
<input type="radio" name="alignment" onclick="layout()" value="Position" /> Position
<input type="radio" name="alignment" onclick="layout()" value="Location" checked="checked" /> Location
<br />
Arrangement:
<input type="radio" name="arrangement" onclick="layout()" value="LeftToRight" checked="checked" /> LeftToRight
<input type="radio" name="arrangement" onclick="layout()" value="RightToLeft" /> RightToLeft
<br />
Sorting:
<select name="sorting" id="sorting" onchange="layout()">
<option value="Forward" selected="selected">Forward</option>
<option value="Reverse">Reverse</option>
<option value="Ascending">Ascending</option>
<option value="Descending">Descending</option>
</select>
</span>
</div>
<div id="myDiagramDiv" style="background-color: white; border: solid 1px black; width: 100%; height: 500px"></div>
<p>
For information on <b>GridLayout</b> and its properties, see the <a>GridLayout</a> documentation page.
</p>
</div>
</body>
</html>