d3/11111.html at master · EdwardSYT/d3 · GitHub

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<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>力导图添加删除连线</title>
    <!--<script src="lib/d3/3.5.5/d3.min.js"></script>
    <script src="jquery-1.11.3.min.js"></script>-->

<script src="jquery-1.11.2.min.js"></script>
<script type="text/javascript" src="d3/d3.v3.min.js"></script>
    <style>
        svg {
            background-color: #FFF;
            cursor: default;
            -webkit-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
            -o-user-select: none;
            user-select: none;
        }

        path.link {
            fill: none;
            stroke: #000;
            stroke-width: 4px;
            cursor: default;
        }

        path.link.selected {
            stroke-dasharray: 10, 2;
        }

        path.link.dragline {
            pointer-events: none;
        }

        path.link.hidden {
            stroke-width: 0;
        }

        svg:not(.active) path.link {
            cursor: pointer;
        }

        circle {
            stroke-width: 1.5px;
            cursor: pointer;
        }

    </style>
</head>
<body>
    <button onclick="opens()">关闭连线添加/删除功能（点击连线删除）</button>
    <button onclick="p()">打开连线添加</button>
    <button onclick="openStart()">关闭/打开力导图效果</button>
    <script type="text/javascript">
        var mousedown_node = null;
        var nodes = [{name: "桂林"},{name: "广州"},{name: "厦门"},
            {name: "杭州"},{name: "上海"},{name: "青岛"},
            {name: "天津"}];
        var edges = [{source:0,target:1},{source:0,target:2},{source:0,target:3},
            {source:0,target:4},{source:1,target:2},{source:1,target:5}];

        var width = 1000;
        var height = 1000;

        /*开始绘制画布*/
        var svg = d3.select("body").append("svg").attr({
            width : width,
            height :height
        }).style({"border":"1px solid red"});

        /*隐藏添加连接线*/
        var drag_line = svg.append("svg:path")
                .attr({
                    class : "link dragline hidden",
                    d : "M0,0L0,0"
                });

        /*绘制连接线箭头*/
        svg.append("svg:defs").append("svg:marker")
                .attr('id', 'end-arrow')
                .attr('viewBox', '0 -5 10 10')
                .attr('refX', 6)
                .attr('markerWidth', 3)
                .attr('markerHeight', 3)
                .attr('orient', 'auto')
                .append('svg:path')
                .attr('d', 'M0,-5L10,0L0,5')
                .attr('fill', '#000');

        var force = d3.layout.force()
                .nodes(nodes)		//指定节点数组
                .links(edges)		//指定连线数组
                .size([width, height])	//指定范围
                .linkDistance(150)	//指定连线长度
                .charge(-400);	//相互之间的作用力

        force.start();	//开始作用

        console.log(nodes);
        console.log(edges);

        //添加删除连线
        var svg_edges = svg.append("g").selectAll("line")
                .data(edges)
                .enter()
                .append("line")
                .style("stroke", "#ccc")
                .style("stroke-width", 5)
                .on('click',dellink);
        //连线删除点击事件
        function dellink(d){
            edges.forEach(function (a,i) {
                if(d.source.index == a.source.index && d.target.index == a.target.index){
                     oko=edges.splice(i,1)
                    console.log(oko)
                }
            });
            force.start();
            svg.select("g").selectAll("line")
                    .data(edges)
                    .exit()
                    .remove();
            //可行
            svg.selectAll(".mark").filter(function(d){
                     if(oko[0]==d){
                         return true
                     }
            }).remove();
            //不可行
         /*    svg.selectAll(".mark")
             .data(edges)
             .exit()
             .remove();*/
        }
        var color = d3.scale.category20();

        //添加节点
        var svg_nodes = svg.append("g").selectAll("circle")  //添加原点
                .data(nodes)
                .enter()
                .append("circle")
                .attr("r","20")
                .style("fill",function(d,i){
                    return color(i);
                })
                .on("mousedown", function (d){
                    if(d3.event.ctrlKey) return;
                    mousedown_node = d;
                    drag_line .style('marker-end', 'url(#end-arrow)')
                            .classed('hidden', false)
                            .attr('d', 'M' + mousedown_node.x + ',' + mousedown_node.y + 'L' + mousedown_node.x + ',' + mousedown_node.y);
                })
                .on("mouseup",function(d){
                    if(!mousedown_node) return;
                    // needed by FF
                    drag_line
                            .classed('hidden', true)
                            .style('marker-end', '');
                    mouseup_node = d;
                    if (mouseup_node === mousedown_node) {
                        resetMouseVars();
                        return;
                    }
                    var linkgo;
                    edges.filter(function (d) {
                        if(d.source.index == mousedown_node.index && d.target.index == mouseup_node.index){
                            return linkgo = 'has'
                        }
                        if (d.source.index == mouseup_node.index && d.target.index == mousedown_node.index) {
                            return linkgo = 'has'
                        }
                    })
                    if(linkgo != 'has'){
                        edges.push({source: mousedown_node.index, target: mouseup_node.index});
                    }
                    force.start();
                    svg.select('g').selectAll("line")
                            .data(edges)
                            .enter()
                            .append("line")
                            .style("stroke", "#ccc")
                            .style("stroke-width", 5)
                            .on('click',function(d,i){
                                edges.forEach(function(a,i){
                                    if(d.source.index==a.source.index&&d.target.index== a.target.index){
                                        oko=edges.splice(i,1)
                                    }else{
                                    }
                                })
                                force.start();
                                svg.select('g').selectAll("line")
                                        .data(edges)
                                        .exit()
                                        .remove();
                                //可行
                                svg.selectAll(".mark").filter(function(d){
                                    if(oko[0]==d){
                                        return true
                                    }
                                }).remove();
                                //不可行
                               /* svg.selectAll(".mark")
                                        .data(edges)
                                        .exit()
                                        .remove();*/
                            });
                    flow()
                });

        //添加描述节点
        var svg_texts = svg.selectAll("text")
                .data(nodes)
                .enter()
                .append("text")
                .style("fill","black")
                .attr("dx",20)
                .attr("dy",8)
                .text(function (d) {
                    return d.name;
                });

        //绘制力导图动态坐标位置(监控svg很重要)
        force.on("tick", function () {//对于每一个时间间隔
            //更新连线坐标
            d3.selectAll("line").attr("x1", function (d) {
                return d.source.x;
            })
            .attr("y1", function (d) {
                return d.source.y;
            })
            .attr("x2", function (d) {
                return d.target.x;
            })
            .attr("y2", function (d) {
                return d.target.y;
            });

            //更新节点坐标
            d3.selectAll('circle').attr("cx", function (d) {
                return d.x;
            })
            .attr("cy", function (d) {
                return d.y;
            });

            //更新文字坐标
            svg_texts.attr("x", function (d) {
                return d.x;
            })
            .attr("y", function (d) {
                return d.y;
            });
            /*为路线是从哪里指向哪里 比如 A到B 的动态效果 ↓*/
//            svg_mark.attr("transform", function(d) {
//                return "translate(" + d.source.x+ "," +d.source.y+ ")";
//            });
//            mpath.attr("path",function(d){
//                return "M0,0L"+(d.target.x-d.source.x)+","+ (d.target.y-d.source.y);
//            });
            mpath.attr("path",function(d){
                return "M"+d.source.x+","+d.source.y+"L"+(d.target.x)+","+ (d.target.y);
            });
            /*为路线是从哪里指向哪里 比如 A到B 的动态效果 ↑*/
        });

        svg.on('mousemove', mousemove)
                .on('mouseup', mouseup);
        function mousemove() {
            if (!mousedown_node) return;
            // update drag line
            drag_line.attr('d', 'M' + mousedown_node.x + ',' + mousedown_node.y + 'L' + d3.mouse(this)[0] + ',' + d3.mouse(this)[1]);

        }
        function mouseup() {
            if (mousedown_node) {
                // hide drag line
                drag_line
                        .classed('hidden', true)
                        .style('marker-end', '');
            }

            // because :active only works in WebKit?
            svg.classed('active', false);

            // clear mouse event vars
            resetMouseVars();
        }

        //清空节点连接线
        function resetMouseVars() {
            mousedown_node = null;
            mouseup_node = null;
            mousedown_link = null;
        }

        var mk = null;
        //关闭连线添加/删除功能（点击连线删除）
        function opens() {
            d3.selectAll("circle").call(force.drag)
                    .on('mousedown', null)
            d3.selectAll('line').on('click',null)
        }

        //打开连线添加
        function p() {
            d3.selectAll("circle").on('mousedown.drag', null).on('touchstart.drag', null).on('mousedown', mousedDown)
            d3.selectAll('line').on('click',dellink)
        }

        function mousedDown(d) {
            if (d3.event.ctrlKey) return;
            mousedown_node = d;
            drag_line
                    .style('marker-end', 'url(#end-arrow)')
                    .classed('hidden', false)
                    .attr('d', 'M' + mousedown_node.x + ',' + mousedown_node.y + 'L' + mousedown_node.x + ',' + mousedown_node.y);
        }
        //打开关闭力导图效果
        var num;
        function openStart() {
            if (num == true ||  num ==  undefined) {
                d3.selectAll("circle").call(force.drag).attr("r", function (d) {
                    d.fixed = true;
                    num  = false;
                    return 20;
                })
            } else {
                d3.selectAll("circle").call(force.drag).attr("r", function (d) {
                    d.fixed = false;
                    num = true;
                    return 20;
                })
            }
        }
        flow()
        //添加力导图流向动态效果 比如 A到B 的动态效果 ↓*/
     /*   var svg_mark = svg.selectAll("arrows.mark")
                .data(edges)
                .enter()
                .append('path')
                .attr('d','M2,2 L10,6 L2,10 L6,6 L2,2')
                .style('fill','black')
                .style('stroke','black')
                .style('stroke-width','4px');

        var mpath = svg_mark.append("animateMotion").attr("path",function(d){
            return "M0,0L"+(d.target.x-d.source.x)+","+ (d.target.y-d.source.y);
        }).attr("dur","3s").attr("begin","0s").attr("repeatCount","indefinite").attr("rotate","auto");*/
      /*  var mpath = svg_mark.append("animateMotion").attr("path",function(d){
            return "m0,0l"+(d.target.x)+","+ (d.target.y);
        }).attr("dur","3s").attr("begin","0s").attr("repeatCount","indefinite").attr("rotate","auto");*/
        //添加力导图流向动态效果 比如 A到B 的动态效果 ↑*/
        function  flow(){
            var svg_mark = svg.selectAll(".mark")
                    .data(edges)
                    .enter()
                    .append('path')
                    .attr('class','mark')
                    .attr('d','M2,2 L10,6 L2,10 L6,6 L2,2')
                    .style('fill','black')
                    .style('stroke','black')
                    .style('stroke-width','4px');

             mpath = svg.selectAll(".mark").append("animateMotion").attr("path",function(d){
                  return "m0,0l"+(d.target.x)+","+ (d.target.y);
            }).attr("dur","3s").attr("begin","0s").attr("repeatCount","indefinite").attr("rotate","auto");
        }
    </script>
</body>
</html>