小编为大家准备了一套完整的GoJS的示例，将以连载的形式展开，供大家学习和交流讨论。
GoJS是一款功能强大，快速且轻量级的流程图控件，可帮助你在JavaScript 和 HTML5 Canvas程序中创建流程图，且极大地简化你的JavaScript / Canvas 程序。
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小编为大家准备了一套完整的GoJS的示例，将以连载的形式展开，供大家学习和交流讨论。
此示例使用Node模板设置Diagram.nodeTemplate，该模板数据绑定文本字符串和形状的填充颜色。有关构建自己的模板和模型数据的概述，请参阅“入门教程”。
该Diagram.initialContentAlignment设置导致图表内容出现在图的视口的中心。
使用鼠标和常用键盘命令，你可以平移，选择，移动，复制，删除和撤消/重做。在触摸设备上，使用手指作为鼠标，并保持手指静止以显示上下文菜单。默认上下文菜单支持当时为所选对象启用的大多数标准命令。
有关更精细和更有说服力的样本，请参阅基本示例。有关从服务器加载JSON数据的示例，请参阅最小化JSON示例。有关从服务器加载XML数据的示例，请参阅最小化XML示例。
以下为在页面中查看此示例页面的源代码：
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", // create a Diagram for the DIV HTML element { initialContentAlignment: go.Spot.Center, // center the content "undoManager.isEnabled": true // enable undo & redo }); // define a simple Node template myDiagram.nodeTemplate = $(go.Node, "Auto", // the Shape will go around the TextBlock $(go.Shape, "RoundedRectangle", { strokeWidth: 0, fill: "white" }, // Shape.fill is bound to Node.data.color new go.Binding("fill", "color")), $(go.TextBlock, { margin: 8 }, // some room around the text // TextBlock.text is bound to Node.data.key new go.Binding("text", "key")) ); // 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: "Alpha", color: "lightblue" }, { key: "Beta", color: "orange" }, { key: "Gamma", color: "lightgreen" }, { key: "Delta", color: "pink" } ], [ { from: "Alpha", to: "Beta" }, { from: "Alpha", to: "Gamma" }, { from: "Beta", to: "Beta" }, { from: "Gamma", to: "Delta" }, { from: "Delta", to: "Alpha" } ]); }
<div id="sample" deep="0"> <!-- The DIV for the Diagram needs an explicit size or else we won't see anything. This also adds a border to help see the edges of the viewport. --> <div id="myDiagramDiv" style="border: solid 1px black; width:400px; height:400px"></div> <p> This isn't a truly <i>minimal</i> demonstration of <b>GoJS</b>, because we do specify a custom Node template, but it's pretty simple. The whole source for the sample is shown below if you click on the link. </p> <p> This sample sets the <a>Diagram.nodeTemplate</a>, with a <a>Node</a> template that data binds both the text string and the shape's fill color. For an overview of building your own templates and model data, see the <a href="../learn/index.html">Getting Started tutorial.</a> </p> <p> The <a>Diagram.initialContentAlignment</a> setting causes the diagram's contents to appear in the center of the diagram's viewport. </p> <p> Using the mouse and common keyboard commands, you can pan, select, move, copy, delete, and undo/redo. On touch devices, use your finger to act as the mouse, and hold your finger stationary to bring up a context menu. The default context menu supports most of the standard commands that are enabled at that time for the selected object. </p> <p> For a more elaborate and capable sample, see the <a href="basic.html">Basic</a> sample. For a sample that loads JSON data from the server, see the <a href="minimalJSON.html">Minimal JSON</a> sample. For a sample that loads XML data from the server, see the <a href="minimalXML.html">Minimal XML</a> sample. </p></div>
以下为在GitHub上查看此示例页面的源代码：
<!DOCTYPE html><html><head><meta name="viewport" content="width=device-width, initial-scale=1"><title>Minimal GoJS Sample</title><meta name="description" content="An almost minimal diagram using a very simple node template and the default link template." /><!-- Copyright 1998-2018 by Northwoods Software Corporation. --><meta charset="UTF-8"><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", // create a Diagram for the DIV HTML element { initialContentAlignment: go.Spot.Center, // center the content "undoManager.isEnabled": true // enable undo & redo }); // define a simple Node template myDiagram.nodeTemplate = $(go.Node, "Auto", // the Shape will go around the TextBlock $(go.Shape, "RoundedRectangle", { strokeWidth: 0, fill: "white" }, // Shape.fill is bound to Node.data.color new go.Binding("fill", "color")), $(go.TextBlock, { margin: 8 }, // some room around the text // TextBlock.text is bound to Node.data.key new go.Binding("text", "key")) ); // 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: "Alpha", color: "lightblue" }, { key: "Beta", color: "orange" }, { key: "Gamma", color: "lightgreen" }, { key: "Delta", color: "pink" } ], [ { from: "Alpha", to: "Beta" }, { from: "Alpha", to: "Gamma" }, { from: "Beta", to: "Beta" }, { from: "Gamma", to: "Delta" }, { from: "Delta", to: "Alpha" } ]); }</script></head><body onload="init()"><div id="sample"> <!-- The DIV for the Diagram needs an explicit size or else we won't see anything. This also adds a border to help see the edges of the viewport. --> <div id="myDiagramDiv" style="border: solid 1px black; width:400px; height:400px"></div> <p> This isn't a truly <i>minimal</i> demonstration of <b>GoJS</b>, because we do specify a custom Node template, but it's pretty simple. The whole source for the sample is shown below if you click on the link. </p> <p> This sample sets the <a>Diagram.nodeTemplate</a>, with a <a>Node</a> template that data binds both the text string and the shape's fill color. For an overview of building your own templates and model data, see the <a href="../learn/index.html">Getting Started tutorial.</a> </p> <p> The <a>Diagram.initialContentAlignment</a> setting causes the diagram's contents to appear in the center of the diagram's viewport. </p> <p> Using the mouse and common keyboard commands, you can pan, select, move, copy, delete, and undo/redo. On touch devices, use your finger to act as the mouse, and hold your finger stationary to bring up a context menu. The default context menu supports most of the standard commands that are enabled at that time for the selected object. </p> <p> For a more elaborate and capable sample, see the <a href="basic.html">Basic</a> sample. For a sample that loads JSON data from the server, see the <a href="minimalJSON.html">Minimal JSON</a> sample. For a sample that loads XML data from the server, see the <a href="minimalXML.html">Minimal XML</a> sample. </p></div></body></html>
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