GoJS入门笔记（1）

时间 2019-11-08

标签 gojs 入门笔记繁體版

原文原文链接

GoJS能干什么，废话很少说，进传送门看看。传送门

第一步：Hello World!

<html>
<head>
    <!-- 引用GoJS  -->
    <script src="go-debug.js"></script>
</head>
<body>
    <!-- 每个图型都要包含在HTML中有明确大小的<div>里 -->
    <div id="myDiagramDiv" style="width:800px; height:500px; background-color: #DAE4E4;"></div>
    
    <script>
        // 若是用了jQuery等其余库或框架，这里$会有冲突，在这里换成 $$/MAKE/GO等
        var $ = go.GraphObject.make;
        
        // JS中经过div的id来制做图标
        var myDiagram =
            $(go.Diagram, "myDiagramDiv", {
                "undoManager.isEnabled": true // enable Ctrl-Z to undo and Ctrl-Y to redo
            });

    </script>
</body>
</html>

第二步：图像和模型

var $ = go.GraphObject.make;
    var myDiagram =
        $(go.Diagram, "myDiagramDiv", {
            "undoManager.isEnabled": true // CTRL-Z撤销操做，CTRL-Y恢复操做
        });

    // 新建模型
    var myModel = $(go.Model);
    
    // 在模型数据中，每一个节点由JavaScript对象表示
    myModel.nodeDataArray = [
        { key: "Alpha" },
        { key: "Beta" },
        { key: "Gamma" }
    ];
    myDiagram.model = myModel;

生成三个可拖拽的对象html

单击并拖动上图中的背景以平移视图

单击一个节点来选择它，或者按下并拖动一个节点来移动它

使用CTRL-C和CTRL-V 或按住CTRL而后控件拖放来复制

用Delete键删除选中控件, 戳我查看更多快捷键

若是撤消管理器已启用，CTRL-Z撤销操做,CTRL-Y恢复操做

第三步：节点样式 - nodeTemplate

咱们能够修改节点的样式种类：node

形状: Shape

文本块: TextBlock

图片: Picture

容器面板: Panel

// 使用介绍 
// 第一个参数 go.Node，由面板和自己的其余节点自己的其余图形对象组成
// 第二个参数 'Auto', 对应面板的类型，
myDiagram.nodeTemplate =
  $(go.Node, 'Auto',
    // 而后将元素定义在这个面班中：Shap,TextBlock等
    
    $(go.TextBlock,
      // TextBlock的内容和节点数据对象中的key绑定
      new go.Binding("text", "key"))
  );

var model = $(go.Model);

model.nodeDataArray =
[
  { key: "text", source: "cat1.png" }
];
myDiagram.model = model;

代码示例：框架

var $ = go.GraphObject.make;
    var myDiagram =
        $(go.Diagram, "myDiagramDiv", {
            "undoManager.isEnabled": true 
        });

    myDiagram.nodeTemplate =
        $(go.Node, "Horizontal",
            // 整个控件是蓝色背景
            { background: "#44CCFF" },
            
            $(go.Picture,
                // 一般状况下，图片须要有明确的宽度。当没有设置图片路径 或者 图片是透明的时候会显示红色背景，
                { margin: 10, width: 50, height: 50, background: "red" },
                new go.Binding("source")),
                
            $(go.TextBlock,
                "Default Text", 
                { margin: 12,  stroke: "white", font: "bold 16px sans-serif" }, // 初始化文本样式
                
                new go.Binding("text", "name"))   // 绑定数据的key
        );

    var model = $(go.Model);
    model.nodeDataArray = [ 
        {
            name: "Don Meow",
            source: "1.png"
        },
        {
            name: "Copricat",
            source: "2.png"
        },
        {
            name: "Demeter",
            source: "3.png"
        },
        { /* Empty node data */ }
    ];
    myDiagram.model = model;

运行结果：
spa

第四步: 其余种类的模型

若是咱们想要实现图像模型之间的联系，基础模型是知足不了咱们的需求的，咱们看看其余的模型吧。
  (GraphLinksModel and TreeModel)

1. GraphLinksModel.net

在GraphLinksModel中，咱们能够在model.linkDataArray中设置控件与控件之间的关系

var model = $(go.GraphLinksModel);
model.nodeDataArray =
[
  { key: "A" },
  { key: "B" },
  { key: "C" }
];
model.linkDataArray =
[
  { from: "A", to: "B" },
  { from: "B", to: "C" }
];
myDiagram.model = model;

2. TreeModel
TreeModel有点不一样debug

// 使用方法
var model = $(go.TreeModel);
model.nodeDataArray =
[
  { key: "A" },
  { key: "B", parent: "A" },
  { key: "C", parent: "B" }
];
myDiagram.model = model;

// TreeModel使用
var model = $(go.TreeModel);
model.nodeDataArray =
[ 
  { key: "1",              name: "Don Meow",   source: "cat1.png" },
  { key: "2", parent: "1", name: "Demeter",    source: "cat2.png" },
  { key: "3", parent: "1", name: "Copricat",   source: "cat3.png" },
  { key: "4", parent: "3", name: "Jellylorum", source: "cat4.png" },
  { key: "5", parent: "3", name: "Alonzo",     source: "cat5.png" },
  { key: "6", parent: "2", name: "Munkustrap", source: "cat6.png" }
];
myDiagram.model = model;

第六步：Link 样式 - linkTemplate

// 经过linkTemplate设置链接线的样式

myDiagram.linkTemplate =
 $(go.Link, 
    { routing: go.Link.Orthogonal, corner: 5 },
    $(go.Shape, { strokeWidth: 3, stroke: "#555" })); // 没有箭头
    /*
        $(go.Shape, {strokeWidth:2},
          new go.Binding("stroke", "color")  // 链接线样式
        ),
        $(go.Shape, {toArrow: "Standard", stroke:null},   // 箭头样式
          new go.Binding("fill", "color")
        )
    */
  );
var model = $(go.TreeModel);
model.nodeDataArray =
[
  { key: "1",              name: "Don Meow",   source: "cat1.png" },
  { key: "2", parent: "1", name: "Demeter",    source: "cat2.png" },
  { key: "3", parent: "1", name: "Copricat",   source: "cat3.png" },
  { key: "4", parent: "3", name: "Jellylorum", source: "cat4.png" },
  { key: "5", parent: "3", name: "Alonzo",     source: "cat5.png" },
  { key: "6", parent: "2", name: "Munkustrap", source: "cat6.png" }
];
myDiagram.model = model;

运行结果