gojs实现页面可拖动流程图图表效果代码-html代码-BFW代码库

代码语言：html

所属分类：图表

代码描述：gojs实现页面可拖动流程图图表效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8">
</head>

<body>
    <script src="//repo.bfw.wiki/bfwrepo/js/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

      var yellowgrad = $(go.Brush, "Linear", { 0: "rgb(254, 201, 0)", 1: "rgb(254, 162, 0)" });
      var greengrad = $(go.Brush, "Linear", { 0: "#98FB98", 1: "#9ACD32" });
      var bluegrad = $(go.Brush, "Linear", { 0: "#B0E0E6", 1: "#87CEEB" });
      var redgrad = $(go.Brush, "Linear", { 0: "#C45245", 1: "#871E1B" });
      var whitegrad = $(go.Brush, "Linear", { 0: "#F0F8FF", 1: "#E6E6FA" });

      var bigfont = "bold 13pt Helvetica, Arial, sans-serif";
      var smallfont = "bold 11pt Helvetica, Arial, sans-serif";

      // Common text styling
      function textStyle() {
        return {
          margin: 6,
          wrap: go.TextBlock.WrapFit,
          textAlign: "center",
          editable: true,
          font: bigfont
        }
      }

      myDiagram =
        $(go.Diagram, "myDiagramDiv",
          {
            // have mouse wheel events zoom in and out instead of scroll up and down
            "toolManager.mouseWheelBehavior": go.ToolManager.WheelZoom,
            initialAutoScale: go.Diagram.Uniform,
            "linkingTool.direction": go.LinkingTool.ForwardsOnly,
            layout: $(go.LayeredDigraphLayout, { isInitial: false, isOngoing: false, layerSpacing: 50 }),
            "undoManager.isEnabled": true
          });

      // when the document is modified, add a "*" to the title and enable the "Save" button
      myDiagram.addDiagramListener("Modified", e => {
        var button = document.getElementById("SaveButton");
        if (button) button.disabled = !myDiagram.isModified;
        var idx = document.title.indexOf("*");
        if (myDiagram.isModified) {
          if (idx < 0) document.title += "*";
        } else {
          if (idx >= 0) document.title = document.title.slice(0, idx);
        }
      });

      var defaultAdornment =
        $(go.Adornment, "Spot",
          $(go.Panel, "Auto",
            $(go.Shape, { fill: null, stroke: "dodgerblue", strokeWidth: 4 }),
            $(go.Placeholder)),
          // the button to create a "next" node, at the top-right corner
          $("Button",
            {
              alignment: go.Spot.TopRight,
              click: addNodeAndLink
            },  // this function is defined below
            new go.Binding("visible", "", a => !a.diagram.isReadOnly).ofObject(),
            $(go.Shape, "PlusLine", { desiredSize: new go.Size(6, 6) })
          )
        );

      // define the Node template
      myDiagram.nodeTemplate =
        $(go.Node, "Auto",
          { selectionAdornmentTemplate: defaultAdornment },
          new go.Binding("location", "loc", go.Point.parse).makeTwoWay(go.Point.stringify),
          // define the node's outer shape, which will surround the TextBlock
          $(go.Shape, "Rectangle",
            {
              fill: yellowgrad, stroke: "black",
              portId: "", fromLinkable: true, toLinkable: true, cursor: "pointer",
              toEndSegmentLength: 50, fromEndSegmentLength: 40
            }),
          $(go.TextBlock, "Page",
            {
              margin: 6,
              font: bigfont,
              editable: true
            },
            new go.Binding("text", "text").makeTwoWay()));

      myDiagram.nodeTemplateMap.add("Source",
        $(go.Node, "Auto",
          new go.Binding("location", "loc", go.Point.parse).makeTwoWay(go.Point.stringify),
          $(go.Shape, "RoundedRectangle",
            {
              fill: bluegrad,
              portId: "", fromLinkable: true, cursor: "pointer", fromEndSegmentLength: 40
            }),
          $(go.TextBlock, "Source", textStyle(),
            new go.Binding("text", "text").makeTwoWay())
        ));

      myDiagram.nodeTemplateMap.add("DesiredEvent",
        $(go.Node, "Auto",
          new go.Binding("location", "loc", go.Point.parse).makeTwoWay(go.Point.stringify),
          $(go.Shape, "RoundedRectangle",
            { fill: greengrad, portId: "", toLinkable: true, toEndSegmentLength: 50 }),
          $(go.TextBlock, "Success!", textStyle(),
            new go.Binding("text", "text").makeTwoWay())
        ));

      // Undesired events have a special adornment that allows adding additional "reasons"
      var UndesiredEventAdornment =
        $(go.Adornment, "Spot",
          $(go.Panel, "Auto",
            $(go.Shape, { fill: null, stroke: "dodgerblue", strokeWidth: 4 }),
            $(go.Placeholder)),
          // the button to create a "next" node, at the top-right corner
          $("Button",
            {
              alignment: go.Spot.BottomRight,
              click: addReason
            },  // this function is defined below
            new go.Binding("visible", "", a => !a.diagram.isReadOnly).ofObject(),
            $(go.Shape, "TriangleDown", { .........完整代码请登录后点击上方下载按钮下载查看