jsPlumb学习笔记

这就是一个给元素画连接线的工具。

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<!DOCTYPE html>
<html>
    <head>
        <title>jsPlumb</title>
        <style>
            .item{
                width:100px;
                height:50px;
                border:3px solid green;
                position: absolute;
            }
            .item1{
                left:400px;
                top:100px;
            }
            .item2{
                left:300px;
                top:250px;
            }
            .item3{
                left:500px;
                top:250px;
            }
            .item4{
                left:200px;
                top:400px;
            }
            .item5{
                left:400px;
                top:400px;
            }
            .item6{
                left:600px;
                top:400px;
            }
        </style>
    </head>
    <body>
        <div class='demo' id='demo'>
            <div class='item item1' id='item1'>1</div>
            <div class='item item2' id='item2'>2</div>
            <div class='item item3' id='item3'>3</div>
            <div class='item item4' id='item4'>4</div>
            <div class='item item5' id='item5'>5</div>
            <div class='item item6' id='item6'>6</div>
        </div>   
    <script src="jquery-2.1.1.js"></script>
    <script src="jquery-ui-1.9.2.js"></script>
    <script src="jquery.jsPlumb-1.4.1-all.js"></script>
    <script>
    jsPlumb.ready(function(){
        var color = '#222';
        var instance = jsPlumb.getInstance({
            //连线
            Connector:['Bezier', {curviness:50}],
            //拖动时的演示
            DragOptions:{cursor:'pointer', zIndex:2000},
            //连接线的样式
            PaintStyle:{strokeStyle:'steelblue', lineWidth:3},
            //连接点的样式
            EndpointStyle:{radius:6, fillStyle:'#222'},
            //hover时线样式
            HoverPaintStyle:{strokeStyle:'green'},
            //hover时点的样式
            EndpointHoverStyle:{fillStyle:'red'},
            Container:'demo'    //Either an element id, a DOM element, or a selector from the underlying library
        });
        instance.doWhileSuspended(function(){
            var arrowCommon = {foldback: .7, fillStyle: color, width: 14},
                overlays = [
                ['Arrow', {location:.8}, arrowCommon],
                // ['Arrow', {location:.3, direction:-1}, arrowCommon],
                ];
            var windows = jsPlumb.getSelector('.item');
 
            for(var i = 0; i<windows.length;i++){
                instance.addEndpoint(windows[i], {
                    uuid:windows[i].getAttribute('id')+'-bottom',
                    anchor:'Bottom',
                    maxConnections:-1
                });
                instance.addEndpoint(windows[i], {
                    uuid:windows[i].getAttribute('id')+'-top',
                    anchor:'Top',
                    maxConnections:-1
                });
            }
            //connect 函数
            instance.connect({uuids:['item3-bottom','item6-top'], overlays:overlays, detachable:true, reattach:true});
            instance.connect({uuids:['item1-bottom','item2-top'], overlays:overlays});
            instance.connect({uuids:['item1-bottom','item3-top'], overlays:overlays});
            instance.connect({uuids:['item2-bottom','item4-top'], overlays:overlays});
            instance.connect({uuids:['item2-bottom','item5-top'], overlays:overlays});
            //jquery ui里的draggable功能
            instance.draggable(windows);
        });
        jsPlumb.fire('jsPlumbdemoLoaded', instance);
    })
    </script>
    </body>
</html>

这是一个简单的小例子。是官网中一个demo的简化版，在学习了网上的教程之后，给官网的例子加了自己的注释。

给元素加连接点，给连接点加连接线，给连接线加各种装饰。需要的样式，canvas和SVG中都有，需要的动作，就是拖动。

posted on   j.w  阅读(5257)  评论(0)  编辑  收藏  举报
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