D3.js 如何在添加放大和缩小功能的同时停止svg跳转
您好,我刚刚为D3 tree.js添加了缩放功能,但在拖动svg时,它会上下跳动,有人能帮我吗?一切正常,但只拖动gable svg不工作,我尝试了谷歌提供的几个附加g的解决方案,但问题仍然没有解决。有人能帮我吗D3.js 如何在添加放大和缩小功能的同时停止svg跳转,d3.js,svg,tree,D3.js,Svg,Tree,您好,我刚刚为D3 tree.js添加了缩放功能,但在拖动svg时,它会上下跳动,有人能帮我吗?一切正常,但只拖动gable svg不工作,我尝试了谷歌提供的几个附加g的解决方案,但问题仍然没有解决。有人能帮我吗 .工具提示{ 位置:绝对位置; 文本对齐:左对齐; 空白:正常; 填充:4px; 字体大小:14px; 背景:谭; 边框:1px纯色灰色; } .节点圆{ 填充:#fff; 笔画:钢蓝; 笔画宽度:3px; } .节点文本{ 字体:12px无衬线; } .链接{ 填充:无; 冲程
.工具提示{
位置:绝对位置;
文本对齐:左对齐;
空白:正常;
填充:4px;
字体大小:14px;
背景:谭;
边框:1px纯色灰色;
}
.节点圆{
填充:#fff;
笔画:钢蓝;
笔画宽度:3px;
}
.节点文本{
字体:12px无衬线;
}
.链接{
填充:无;
冲程:#ccc;
笔画宽度:2px;
}
.d3关联菜单{
位置:绝对位置;
显示:无;
背景色:#F2F2;
边界半径:4px;
字体系列:Arial,无衬线;
字体大小:14px;
最小宽度:150px;
边框:1px实心#d4;
z指数:1200;
}
.d3上下文菜单{
列表样式类型:无;
利润率:4px0px;
填充:0px;
游标:默认值;
}
.d3上下文菜单ul li{
填充:4px16px;
}
.d3上下文菜单ul li:悬停{
背景色:#4677f8;
颜色:#fefefe;
}
函数工具提示(){
返回d3.选择(“正文”).追加(“div”)
.attr(“类”、“工具提示”)
.style(“不透明度”,0);}
d3.contextMenu=函数(菜单,openCallback){
//创建将保存上下文菜单的div元素
d3.选择全部('.d3上下文菜单')。数据([1])
.输入()
.append('div'))
.attr('class','d3上下文菜单');
//关闭菜单
d3.选择('div')。打开('click.d3上下文菜单',函数(){
d3.选择('.d3上下文菜单').style('display','none');
});
//当contextmenu事件发生时执行此操作
返回函数(){
让elm=这个;
d3.选择全部('.d3上下文菜单').html('');
let list=d3。选择全部('.d3上下文菜单')。追加('ul');
列表。选择全部('li')。数据(菜单)。输入()
.append('li')
.html(函数(d){
返回d.title;
})
.on('click',函数(d,i){
d、 行动(elm、数据、索引);
d3.选择('.d3上下文菜单').style('display','none');
});
//openCallback允许在显示菜单之前触发操作
//例如,关闭工具提示
if(openCallback)openCallback(数据、索引);
//显示关联菜单
d3.选择(“.d3上下文菜单”)
.style('left',(d3.event.pageX-2)+'px')
.style('top',(d3.event.pageY-2)+'px')
.style(“显示”、“块”);
d3.event.preventDefault();
};
};
变量菜单=[
{
标题:“URL”,
行动:功能(elm、d、i){
console.log('Item#1 clicked!'+d);
console.log('此圆圈的数据为:'+d);
}
},
{
标题:“探索”,
行动:功能(elm、d、i){
控制台日志(d);
console.log('此圆圈的数据为:'+d);
}
}
]
var数据=[1,2,3];
选择的var=null;
树形变种=
{
“名称”:“顶级”,
“儿童”:[
{
“名称”:“2级:A”,
“儿童”:[
{“姓名”:“儿子”},
{“姓名”:“A的女儿”}
]
},
{“名称”:“级别2:B”}
]
};
//预定义的框大小
设rectNode={
宽度:120,
身高:17,
文本边距:5
};
//设置图表的尺寸和边距
var margin={顶部:20,右侧:90,底部:30,左侧:90},
宽度=960-margin.left-margin.right,
高度=500-margin.top-margin.bottom;
//将svg对象附加到页面主体
//将“组”元素附加到“svg”
//将“组”元素移动到左上角
var svg=d3.选择(“div”)
.append(“svg”)
.attr(“宽度”,宽度+边距。右侧+边距。左侧)
.attr(“高度”,高度+边距。顶部+边距。底部);
调用(d3.zoom().on(“zoom”,function(){svg.attr(“transform”,d3.event.transform)});
svg.append(“g”)
.attr(“转换”、“转换”
+margin.left+”,“+margin.top+”)
;
var i=0,
持续时间=750,
根;
//声明树布局并指定大小
var treemap=d3.tree().size([height,width]);
//指定父对象、子对象、高度和深度
root=d3.hierarchy(treeData,函数(d){返回d.children;});
root.x0=高度/2;
root.y0=0;
//在第二层之后崩溃
根。子。forEach(塌陷);
更新(根);
//折叠节点及其所有子节点
功能崩溃(d){
如果(d.儿童){
d、 _children=d.children
d、 _儿童。forEach(崩溃)
d、 children=null
}
}
函数更新(源){
//为节点指定x和y位置
var treeData=树映射(根);
//计算新的树布局。
var nodes=treeData.subjects(),
links=treeData.subjects().slice(1);
//为固定深度进行规格化。
forEach(函数(d){d.y=d.depth*180});
//*******************节点部分***************************
//更新节点。。。
var node=svg.selectAll('g.node')
.data(节点,函数(d){返回d.id | |(d.id=++i)});
//在父对象的上一个位置输入任何新模式。
var nodeEnter=node.enter().append('g')
.attr('类','节点')
.attr(“转换”,函数(d){
返回“translate”(“+source.y0+”,“+source.x0+”);
});
//.on('点击',点击);
//为节点添加圆
nodeEnter.append('circle'))
.attr('类','节点')
.attr('r',0)
.样式(“填充”,功能(d){
返回d.#儿童?“淡蓝色”:“fff”;
});
设rectGrpEnter=nodeEnte
<!DOCTYPE html>
<meta charset="UTF-8">
<style>
.tooltip {
position: absolute;
text-align: left;
white-space: normal;
padding: 4px;
font-size: 14px;
background: tan;
border: 1px solid gray;
}
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
.d3-context-menu {
position: absolute;
display: none;
background-color: #f2f2f2;
border-radius: 4px;
font-family: Arial, sans-serif;
font-size: 14px;
min-width: 150px;
border: 1px solid #d4d4d4;
z-index:1200;
}
.d3-context-menu ul {
list-style-type: none;
margin: 4px 0px;
padding: 0px;
cursor: default;
}
.d3-context-menu ul li {
padding: 4px 16px;
}
.d3-context-menu ul li:hover {
background-color: #4677f8;
color: #fefefe;
}
</style>
<body>
<div></div>
<!-- load the d3.js library -->
<script src="https://d3js.org/d3.v4.min.js"></script>
<script >
function tooltip(){
return d3.select("body").append("div")
.attr("class", "tooltip")
.style("opacity", 0);}
d3.contextMenu = function (menu, openCallback) {
// create the div element that will hold the context menu
d3.selectAll('.d3-context-menu').data([1])
.enter()
.append('div')
.attr('class', 'd3-context-menu');
// close menu
d3.select('div').on('click.d3-context-menu', function() {
d3.select('.d3-context-menu').style('display', 'none');
});
// this gets executed when a contextmenu event occurs
return function() {
let elm = this;
d3.selectAll('.d3-context-menu').html('');
let list = d3.selectAll('.d3-context-menu').append('ul');
list.selectAll('li').data(menu).enter()
.append('li')
.html(function(d) {
return d.title;
})
.on('click', function(d, i) {
d.action(elm, data, index);
d3.select('.d3-context-menu').style('display', 'none');
});
// the openCallback allows an action to fire before the menu is displayed
// an example usage would be closing a tooltip
if (openCallback) openCallback(data, index);
// display context menu
d3.select('.d3-context-menu')
.style('left', (d3.event.pageX - 2) + 'px')
.style('top', (d3.event.pageY - 2) + 'px')
.style('display', 'block');
d3.event.preventDefault();
};
};</script>
<script>
var menu = [
{
title: 'URL',
action: function(elm, d, i) {
console.log('Item #1 clicked!'+d);
console.log('The data for this circle is: ' + d);
}
},
{
title: 'ExPLORE',
action: function(elm, d, i) {
console.log(d);
console.log('The data for this circle is: ' + d);
}
}
]
var data = [1, 2, 3];
var selected=null;
var treeData =
{
"name": "Top Level",
"children": [
{
"name": "Level 2: A",
"children": [
{ "name": "Son of A" },
{ "name": "Daughter of A" }
]
},
{ "name": "Level 2: B" }
]
};
//Predefined Box Size
let rectNode = {
width: 120,
height: 17,
textMargin: 5
};
// Set the dimensions and margins of the diagram
var margin = {top: 20, right: 90, bottom: 30, left: 90},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
// append the svg object to the body of the page
// appends a 'group' element to 'svg'
// moves the 'group' element to the top left margin
var svg = d3.select("div")
.append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom);
svg.call(d3.zoom().on("zoom", function () { svg.attr("transform", d3.event.transform) }));
svg.append("g")
.attr("transform", "translate("
+ margin.left + "," + margin.top + ")")
;
var i = 0,
duration = 750,
root;
// declares a tree layout and assigns the size
var treemap = d3.tree().size([height, width]);
// Assigns parent, children, height, depth
root = d3.hierarchy(treeData, function(d) { return d.children; });
root.x0 = height / 2;
root.y0 = 0;
// Collapse after the second level
root.children.forEach(collapse);
update(root);
// Collapse the node and all it's children
function collapse(d) {
if(d.children) {
d._children = d.children
d._children.forEach(collapse)
d.children = null
}
}
function update(source) {
// Assigns the x and y position for the nodes
var treeData = treemap(root);
// Compute the new tree layout.
var nodes = treeData.descendants(),
links = treeData.descendants().slice(1);
// Normalize for fixed-depth.
nodes.forEach(function(d){ d.y = d.depth * 180});
// ****************** Nodes section ***************************
// Update the nodes...
var node = svg.selectAll('g.node')
.data(nodes, function(d) {return d.id || (d.id = ++i); });
// Enter any new modes at the parent's previous position.
var nodeEnter = node.enter().append('g')
.attr('class', 'node')
.attr("transform", function(d) {
return "translate(" + source.y0 + "," + source.x0 + ")";
});
//.on('click', click);
// Add Circle for the nodes
nodeEnter.append('circle')
.attr('class', 'node')
.attr('r', 0)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
let rectGrpEnter = nodeEnter.append('g')
.attr('class', 'node-rect-text-grp');
rectGrpEnter.append('rect')
.attr('rx', 6)
.attr('ry', 6)
.attr('x',-20)
.attr('y',-20)
.style('fill', "#337ab7")
.attr('width', 50)
.attr('height',50)
.on('contextmenu', d3.contextMenu(menu));
// Add labels for the nodes
nodeEnter.append('text')
.attr("dy", ".35em")
.attr("x", function(d) {
return d.children || d._children ? -13 : 13;
})
.attr("text-anchor", function(d) {
return d.children || d._children ? "end" : "start";
})
.text(function(d) { return d.data.name; });
// UPDATE
var nodeUpdate = nodeEnter.merge(node);
// Transition to the proper position for the node
nodeUpdate.transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + d.y + "," + d.x + ")";
});
// Update the node attributes and style
nodeUpdate.select('circle.node')
.attr('r', 10)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
})
.attr('cursor', 'pointer');
// Remove any exiting nodes
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + source.y + "," + source.x + ")";
})
.remove();
// On exit reduce the node circles size to 0
nodeExit.select('circle')
.attr('r', 1e-6);
// On exit reduce the opacity of text labels
nodeExit.select('text')
.style('fill-opacity', 1e-6);
// ****************** links section ***************************
// Update the links...
var link = svg.selectAll('path.link')
.data(links, function(d) { return d.id; });
// Enter any new links at the parent's previous position.
var linkEnter = link.enter().insert('path', "g")
.attr("class", "link")
.attr('d', function(d){
var o = {x: source.x0, y: source.y0}
return diagonal(o, o)
});
// UPDATE
var linkUpdate = linkEnter.merge(link);
// Transition back to the parent element position
linkUpdate.transition()
.duration(duration)
.attr('d', function(d){ return diagonal(d, d.parent) });
// Remove any exiting links
var linkExit = link.exit().transition()
.duration(duration)
.attr('d', function(d) {
var o = {x: source.x, y: source.y}
return diagonal(o, o)
})
.remove();
// Store the old positions for transition.
nodes.forEach(function(d){
d.x0 = d.x;
d.y0 = d.y;
});
// Creates a curved (diagonal) path from parent to the child nodes
function diagonal(s, d) {
path = `M ${s.y} ${s.x}
C ${(s.y + d.y) / 2} ${s.x},
${(s.y + d.y) / 2} ${d.x},
${d.y} ${d.x}`
return path
}
// Toggle children on click.
function click(d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
function contextmenu(d){
if(d.children){
alert("Has Children")
}
else{
alert("NO Has Children")
selected = d;
update(d);
var myObj, i, x = "";
myObj = {
"name":"John",
"age":30,
"cars":[ {name: "child1"}, { name: "child2"}, {name: "child3"}]
};
for (i in myObj.cars) {
var newNodeObj =myObj.cars[i];
;
//Creates new Node
var newNode = d3.hierarchy(newNodeObj);
newNode.depth = selected.depth + 1;
newNode.height = selected.height - 1;
newNode.parent = selected;
if(!selected.children){
selected.children = [];
selected.data.children = [];
}
selected.children.push(newNode);
}
update(selected);
}
}
}
</script>
</body>