привет, я только что добавил функцию масштабирования для дерева D3. js, но при перетаскивании svg он прыгает вверх и вниз, может кто-нибудь помочь мне с этим, и все работает, но только перетаскивание щипца svg не работает, и я пробовал мало Решения, приведенные в google добавления g, но проблема все еще не решена, может ли кто-нибудь помочь мне с этим?
Дерево D3. js Без увеличения
Дерево D3. js С увеличением
<!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>