create-gojs-kit

<!DOCTYPE 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="Allow the user to shift the end of a link that is connected with a rectangular node." /> <meta itemprop="description" content="Allow the user to shift the end of a link that is connected with a rectangular node." /> <meta property="og:description" content="Allow the user to shift the end of a link that is connected with a rectangular node." /> <meta name="twitter:description" content="Allow the user to shift the end of a link that is connected with a rectangular node." /> <link rel="preconnect" href="https://rsms.me/"> <link rel="stylesheet" href="../assets/css/style.css">  <meta itemprop="name" content="Shifting Link Connection Points along Side of Node" /> <meta property="og:title" content="Shifting Link Connection Points along Side of Node" /> <meta name="twitter:title" content="Shifting Link Connection Points along Side of Node" /> <meta property="og:image" content="https://gojs.net/latest/assets/images/screenshots/linkshifting.png" /> <meta itemprop="image" content="https://gojs.net/latest/assets/images/screenshots/linkshifting.png" /> <meta name="twitter:image" content="https://gojs.net/latest/assets/images/screenshots/linkshifting.png" /> <meta property="og:url" content="https://gojs.net/latest/samples/LinkShifting.html" /> <meta property="twitter:url" content="https://gojs.net/latest/samples/LinkShifting.html" /> <meta name="twitter:card" content="summary_large_image" /> <meta property="og:type" content="website" /> <meta property="twitter:domain" content="gojs.net" /> <title> Shifting Link Connection Points along Side of Node | GoJS Diagramming Library </title> </head> <body>  <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">   <script src="https://cdn.jsdelivr.net/npm/gojs@3.1.0"></script> <div id="allSampleContent" class="p-4 w-full"> <script src="../extensions/LinkShiftingTool.js"></script> <script id="code"> function init() { myDiagram = new go.Diagram('myDiagramDiv', { 'undoManager.isEnabled': true }); myDiagram.toolManager.mouseDownTools.add(new LinkShiftingTool()); myDiagram.nodeTemplate = new go.Node('Auto', { locationSpot: go.Spot.Center }) .bindTwoWay('location', 'location', go.Point.parse, go.Point.stringify) .add( new go.Shape({ fill: 'lightgray', portId: '', cursor: 'pointer', fromSpot: go.Spot.AllSides, toSpot: go.Spot.AllSides, fromLinkable: true, toLinkable: true }), new go.TextBlock({ margin: 10 }) .bind('text') ); myDiagram.linkTemplate = new go.Link({ reshapable: true, resegmentable: true, relinkableFrom: true, relinkableTo: true, adjusting: go.LinkAdjusting.Stretch }) // remember the (potentially) user-modified route .bindTwoWay('points') // remember any spots modified by LinkShiftingTool .bindTwoWay('fromSpot', 'fromSpot', go.Spot.parse, go.Spot.stringify) .bindTwoWay('toSpot', 'toSpot', go.Spot.parse, go.Spot.stringify) .add( new go.Shape(), new go.Shape({ toArrow: 'Standard' }) ); myDiagram.model = new go.GraphLinksModel({ pointsDigits: 0, nodeDataArray: [ { key: 1, text: 'Alpha', location: '0 0' }, { key: 2, text: 'Beta', location: '0 100' }, { key: 3, text: 'Gamma', location: '-100 50' }, { key: 4, text: 'Delta', location: '100 50' } ], linkDataArray: [{ from: 1, to: 2 }] }); myDiagram.addDiagramListener('InitialLayoutCompleted', e => { // select the Link in order to show its two additional Adornments, for shifting the ends myDiagram.links.first().isSelected = true; }); } window.addEventListener('DOMContentLoaded', init); </script> <div id="sample"> <div id="myDiagramDiv" style="border: solid 1px black; width: 100%; height: 600px"></div> <p> This sample demonstrates the LinkShiftingTool, which is an extra tool that can be installed in the ToolManager to allow users to shift the end point of the link to be anywhere along the sides of the port with which it remains connected. This extension tool is defined in its own file, as <a href="../extensions/LinkShiftingTool.js">LinkShiftingTool.js</a>. </p> <p> This only looks good for ports that occupy the whole of a rectangular node. If you want to restrict the user's permitted sides, you can adapt the <code>LinkShiftingTool.doReshape</code> method to do what you want. </p> </div> </div>   </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>  <h4>Links</h4> <p> The <a href="../api/symbols/Link.html" target="api">Link</a> class is used to implement a visual relationship between nodes. Links are normally created by the presence of link data objects in the <a href="../api/symbols/GraphLinksModel.html#linkDataArray" target="api">GraphLinksModel.linkDataArray</a> or by a parent key reference as the value of the <a href="../api/symbols/TreeModel.html#nodeParentKeyProperty" target="api">TreeModel.nodeParentKeyProperty</a> of a node data object in a <a href="../api/symbols/TreeModel.html" target="api">TreeModel</a>. More information can be found in the <a href="../intro/links.html">GoJS Intro</a>. </p> <p> <a href="../samples/index.html#links">Related samples</a> </p> <hr>  <h4>Tools</h4> <p> <a href="../api/symbols/Tool.html" target="api">Tool</a>s handle all input events, such as mouse and keyboard interactions, in a Diagram. There are many kinds of predefined Tool classes that implement all of the common operations that users do. </p> <p> For flexibility and simplicity, all input events are canonicalized as <a href="../api/symbols/InputEvent.html" target="api">InputEvent</a>s and redirected by the diagram to go to the <a href="../api/symbols/Diagram.html#currentTool" target="api">Diagram.currentTool</a>. By default the Diagram.currentTool is an instance of <a href="../api/symbols/ToolManager.html" target="api">ToolManager</a> held as the <a href="../api/symbols/Diagram.html#toolManager" target="api">Diagram.toolManager</a>. The ToolManager implements support for all mode-less tools. The ToolManager is responsible for finding another tool that is ready to run and then making it the new current tool. This causes the new tool to process all of the input events (mouse, keyboard, and touch) until the tool decides that it is finished, at which time the diagram's current tool reverts back to the <a href="../api/symbols/Diagram.html#defaultTool" target="api">Diagram.defaultTool</a>, which is normally the ToolManager, again. </p> <p> More information can be found in the <a href="../intro/tools.html">GoJS Intro</a>. </p> <p> <a href="../samples/index.html#tools">Related samples</a> </p> <hr>  <h4>GoJS Extensions</h4> <p> <b>GoJS</b> can be extended in a variety of ways. The most common way to change the standard behavior is to set properties on the <a href="../api/symbols/GraphObject.html" target="api">GraphObject</a>, <a href="../api/symbols/Diagram.html" target="api">Diagram</a>, <a href="../api/symbols/CommandHandler.html" target="api">CommandHandler</a>, <a href="../api/symbols/Tool.html" target="api">Tool</a>, or <a href="../api/symbols/Layout.html" target="api">Layout</a>. But when the desired property does not exist, you might need to override methods of CommandHandler, Tool, Layout, Link, or Node. Methods that you can override are documented in the API reference. Various features of GoJS can be overriden, either by replacing a method on an instance (a feature of JavaScript) or by defining a subclass. You should not modify the prototypes of any of the <b>GoJS</b> classes. </p> <p> In addition to our samples, <b>GoJS</b> provides an <strong><a href="../samples/#extensions">extensions gallery</a></strong>, showcasing the creation of custom tools and layouts. Those classes and samples are written in TypeScript, available at <code>../extensionsJSM/</code>, as ECMAScript/JavaScript modules -- these use the <code>../release/go-module.js</code> library. We recommend that you copy the files that you need into your project, so that you can adjust how they refer to the GoJS library that you choose and so that you can include them into your own building and packaging procedures. </p> <p> More information can be found in the <a href="../intro/extensions.html">GoJS Intro</a>. </p> <p> <a href="../samples/index.html#extensions">Related samples</a> </p> <hr>  <h4>Geometry Path Strings</h4> <p> The <b>GoJS</b> <a href="../api/symbols/Geometry.html" target="api">Geometry</a> class controls the "shape" of a <a href="../api/symbols/Shape.html" target="api">Shape</a>, whereas the <a href="../api/symbols/Shape.html#fill" target="api">Shape.fill</a> and <a href="../api/symbols/Shape.html#stroke" target="api">Shape.stroke</a> and other shape properties control the colors and appearance of the shape. For common shape figures, there are predefined geometries that can be used by setting <a href="../api/symbols/Shape.html#figure" target="api">Shape.figure</a>. However one can also define custom geometries. </p> <p> One can construct any Geometry by allocating and initializing a <a href="../api/symbols/Geometry.html" target="api">Geometry</a> of at least one <a href="../api/symbols/PathFigure.html" target="api">PathFigure</a> holding some <a href="../api/symbols/PathSegment.html" target="api">PathSegment</a>s. But you may find that using the string representation of a Geometry is easier to write and save in a database. Use the static method <a href="../api/symbols/Geometry.html#parse" target="api">Geometry.parse</a> or the <a href="../api/symbols/Shape.html#geometryString" target="api">Shape.geometryString</a> property to transform a geometry path string into a <a href="../api/symbols/Geometry.html" target="api">Geometry</a> object. </p> <p> More information can be found in the <a href="../intro/geometry.html">GoJS Intro</a>. </p> <p> <a href="../samples/index.html#geometries">Related samples</a> </p> <hr> </div> </div> </body>  <script src="../assets/js/goSamples.js"></script> </html>