gojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
220 lines (207 loc) • 11.1 kB
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="A tree structure that does not use links."/>
<link rel="stylesheet" href="../assets/css/style.css"/>
<!-- Copyright 1998-2023 by Northwoods Software Corporation. -->
<title>Pipe Tree</title>
</head>
<body>
<!-- This top nav is not part of the sample code -->
<nav id="navTop" class="w-full z-30 top-0 text-white bg-nwoods-primary">
<div class="w-full container max-w-screen-lg mx-auto flex flex-wrap sm:flex-nowrap items-center justify-between mt-0 py-2">
<div class="md:pl-4">
<a class="text-white hover:text-white no-underline hover:no-underline
font-bold text-2xl lg:text-4xl rounded-lg hover:bg-nwoods-secondary " href="../">
<h1 class="my-0 p-1 ">GoJS</h1>
</a>
</div>
<button id="topnavButton" class="rounded-lg sm:hidden focus:outline-none focus:ring" aria-label="Navigation">
<svg fill="currentColor" viewBox="0 0 20 20" class="w-6 h-6">
<path id="topnavOpen" fill-rule="evenodd" d="M3 5a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 10a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM9 15a1 1 0 011-1h6a1 1 0 110 2h-6a1 1 0 01-1-1z" clip-rule="evenodd"></path>
<path id="topnavClosed" class="hidden" fill-rule="evenodd" d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd"></path>
</svg>
</button>
<div id="topnavList" class="hidden sm:block items-center w-auto mt-0 text-white p-0 z-20">
<ul class="list-reset list-none font-semibold flex justify-end flex-wrap sm:flex-nowrap items-center px-0 pb-0">
<li class="p-1 sm:p-0"><a class="topnav-link" href="../learn/">Learn</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../samples/">Samples</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../intro/">Intro</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../api/">API</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/products/register.html">Register</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../download.html">Download</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="https://forum.nwoods.com/c/gojs/11">Forum</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/contact.html"
target="_blank" rel="noopener" onclick="getOutboundLink('https://www.nwoods.com/contact.html', 'contact');">Contact</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/sales/index.html"
target="_blank" rel="noopener" onclick="getOutboundLink('https://www.nwoods.com/sales/index.html', 'buy');">Buy</a></li>
</ul>
</div>
</div>
<hr class="border-b border-gray-600 opacity-50 my-0 py-0" />
</nav>
<div class="md:flex flex-col md:flex-row md:min-h-screen w-full max-w-screen-xl mx-auto">
<div id="navSide" class="flex flex-col w-full md:w-48 text-gray-700 bg-white flex-shrink-0"></div>
<!-- * * * * * * * * * * * * * -->
<!-- Start of GoJS sample code -->
<script src="../release/go.js"></script>
<div id="allSampleContent" class="p-4 w-full">
<script id="code">
function init() {
// Since 2.2 you can also author concise templates with method chaining instead of GraphObject.make
// For details, see https://gojs.net/latest/intro/buildingObjects.html
const $ = go.GraphObject.make; // for conciseness in defining templates
myDiagram =
new go.Diagram("myDiagramDiv", // Diagram refers to its DIV HTML element by id
{
isReadOnly: true,
// define a TreeLayout where alternating layers of nodes grow in different directions
// child and parent nodes have no space between them.
layout:
$(go.TreeLayout,
{
treeStyle: go.TreeLayout.StyleAlternating,
angle: 90,
layerSpacing: 0,
alternateAngle: 0,
alternateLayerSpacing: 0
})
});
// the node template
// the shape will be resized appropriately when the model is set up
myDiagram.nodeTemplate =
$(go.Node, "Auto",
$(go.Shape, "Rectangle",
{ name: "SHAPE", width: 30, height: 30 },
new go.Binding("fill", "color"),
new go.Binding("stroke", "color")),
$(go.TextBlock, { name: "TEXTBLOCK", margin: 5 },
new go.Binding("text", "flow", flow => getText(flow)))
);
// the Links should have no graphical representation
myDiagram.linkTemplate =
$(go.Link);
myDiagram.model = new go.TreeModel([
{ key: 1, flow: 92, color: "#808080" },
{ key: 2, "parent": 1, flow: 47, color: "#808080" },
{ key: 3, "parent": 1, flow: 45, color: "#808080" },
{ key: 4, "parent": 2, flow: 15, color: "#808080" },
{ key: 5, "parent": 2, flow: 17, color: "#808080" },
{ key: 6, "parent": 2, flow: 15, color: "#808080" },
{ key: 7, "parent": 5, flow: 8, color: "#FFFF00" },
{ key: 8, "parent": 5, flow: 9, color: "#FF0000" },
{ key: 9, "parent": 6, flow: 5, color: "#808080" },
{ key: 10, "parent": 6, flow: 5, color: "#808080" },
{ key: 11, "parent": 6, flow: 5, color: "#808080" }
]);
myDiagram.delayInitialization(updatePipes);
}
// return the text for the TextBlock, using the current number to determine its name
function getText(flow) {
if (flow < 10) return "SubLateral -- Current: " + flow + " gpm";
if (flow < 25) return "Lateral -- Current: " + flow + " gpm";
if (flow < 50) return "SubMain -- Current: " + flow + " gpm";
return "Main -- Max: 100 gpm Current: " + flow + " gpm";
}
// give all shapes the appropriate dimensions and text color, size, and orientation.
function updatePipes(diagram) {
var updated = 1; // when this is 0, no more nodes are in need of updating
while (updated !== 0) {
// have layout determine node positions first
diagram.layoutDiagram();
updated = 0;
var nodes = diagram.nodes.iterator;
while (nodes.next()) {
var node = nodes.value;
var shape = node.findObject("SHAPE");
if (!areChildrenUpdated(node) || !(shape.width === shape.height)) continue;
// update the node if all of its children have been updated and it has not
// this allows its size to be determined based on its childrens' positions once they have been updated and repositioned
else updated++;
// depending on the lightness of the node's color, make the text black or white
var colorBrightness = parseInt(shape.fill.substring(1, 3), 16) +
parseInt(shape.fill.substring(3, 5), 16) +
parseInt(shape.fill.substring(5, 7), 16);
if (colorBrightness <= 384) { node.findObject("TEXTBLOCK").stroke = "white"; }
var horiz;
var linkIn = node.findTreeParentLink();
if (linkIn === null) horiz = true;
// the root node grows horizontally from the left, as do any nodes with links entering their left side
else horiz = linkIn.toSpot.x === 0;
var long = 70;
// the length of the longer side of the shape
if (node.findTreeChildrenLinks().count === 0) long = 170;
var short = 20;
// the length of the shorter side of the shape
var flow = node.data.flow;
// size of the shape depends on the node's "current"
if (flow > 20) { short = 50; long += 30; }
if (flow > 50) short = 100;
// font size also depends on current
node.findObject("TEXTBLOCK").font = Math.floor(10 + flow / 11) + "px sans-serif";
var chl = node.findTreeChildrenNodes();
if (horiz) {
var min = node.location.x;
var max = min;
while (chl.next()) {
if (min === max) if (chl.value.location.x < min) min = chl.value.location.x;
if (chl.value.location.x > max) max = chl.value.location.x;
}
long += max - min;
// make sure the shape is large enough to reach all children
if (long < 160) long = 160;
// a minimum shape size
shape.height = short;
shape.width = long;
// the horizontal side is longer
// set the shape's size
} else {
var min = node.location.y;
var max = min;
while (chl.next()) {
if (min === max) if (chl.value.location.y < min) min = chl.value.location.y;
if (chl.value.location.y > max) max = chl.value.location.y;
}
long += max - min;
if (long < 160) long = 160;
shape.height = long;
shape.width = short;
// the longer size is the vertical one in this case
node.findObject("TEXTBLOCK").angle = 90;
// rotate the TextBlock if the shape is longer vertically
}
}
}
}
// check if the children of this node have all had their sizes changed from the initial one
// if they have been updated, their widths and heights cannot be equal
function areChildrenUpdated(node) {
return node.findTreeChildrenNodes().all(child => child.findObject("SHAPE").width !== child.findObject("SHAPE").height);
}
window.addEventListener('DOMContentLoaded', init);
</script>
<div id="sample">
<div id="myDiagramDiv" style="width:100%;height:600px;border:1px solid black;"></div>
<p>
This diagram does not display <a>Link</a>s.
Instead the <a>TreeLayout.layerSpacing</a> is set to 0,
so that each node and its children have no space between them.
</p>
<p>
The <a>TreeLayout.treeStyle</a> is set to StyleAlternating,
so that alternating layers of the tree grow in each of two directions.
Each node's <a>TextBlock</a> is angled according to the direction
of the layer of the tree that it is in, and the <a>Shape</a>'s
size is set according to direction and the position of the node's children.
</p>
</div>
</div>
<!-- * * * * * * * * * * * * * -->
<!-- End of GoJS sample code -->
</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>