高精度jsPlumb流程图开发过程分享

2024-01-15 22:36:39

【】

一、开发环境搭建

1. 安装jsPlumb

npm install --save jsplumb

2. 导入jsPlumb

<script src="jsplumb.js"></script>

二、基础组件使用

1. 初始化jsPlumb

jsPlumb.ready(function () {
    jsPlumb.setContainer("container");
});

2. 添加端点

var endpoint1 = jsPlumb.addEndpoint("div1", {
    anchor: "TopCenter",
    uuid: "endpoint1"
});

3. 连接端点

jsPlumb.connect({
    source: endpoint1,
    target: endpoint2
});

三、交互效果设计

1. 拖拽端点

jsPlumb.draggable(endpoint1, {
    containment: "parent"
});

2. 连接端点时显示预览线

jsPlumb.bind("connection", function (conn) {
    conn.connector.setPaintStyle({ strokeStyle: "red" });
});

3. 断开连接时显示动画

jsPlumb.bind("connectionDetached", function (conn) {
    conn.connector.animate({ opacity: 0 }, 500, "easeInQuad", function () {
        jsPlumb.remove(conn);
    });
});

四、高级特性实现

1. 使用状态机控制连接行为

var stateMachine = jsPlumb.StateMachine({
    transitions: [
        {
            source: "disconnected",
            target: "connected",
            event: "connect"
        },
        {
            source: "connected",
            target: "disconnected",
            event: "disconnect"
        }
    ]
});

2. 使用绘图库绘制连接线

var connector = jsPlumb.connect({
    source: endpoint1,
    target: endpoint2,
    paintStyle: {
        strokeStyle: "blue",
        lineWidth: 2
    },
    connector: [ "Bezier", { curviness: 100 } ]
});

3. 使用自定义端点

var CustomEndpoint = jsPlumb.Endpoint.extend({
    paint: function (params) {
        params.ctx.fillStyle = "red";
        params.ctx.fillRect(params.x, params.y, 10, 10);
    }
});