Make the Click event unavailable during animations - javascript

I am a beginner in d3.js and I am trying to do a collapsible horizontal tree with d3.js. I started with this example :
http://blockbuilder.org/d3noob/43a860bc0024792f8803bba8ca0d5ecd
There is one flaw that I try to solve but without success. It is when you click multiple times quickly on the same circle, it launches the same animations many times and it broke the tree.
So I would like to know if there is a possibility to make the click event disabled during the animation and make it available at the end ?
I tried using this method to remove the event and put it back, but it does not work.
Thanks for your help.

Rather than using timeouts or removing and adding event listeners or tracking transitions, you can check to see if a transition is occurring on any individual node with d3.active(node). It will return either null (in the event of no transition) or the transition if one is taking place. If a transition is occurring, ignore the click event (or more accurately, don't carry out any actions on click events if a transition is happening).
First let's check to see if a selection has transitioning elements:
function isTransitioning(selection) {
var transitioning = false;
selection.each(function() { if(d3.active(this)) { transitioning = true; } })
return transitioning;
}
Then let's apply that in the click function in your linked example:
function click(d) {
// Are no transitions happening?
if(!isTransitioning(d3.selectAll("circle"))) {
// If none are continue with updating the graph:
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
}
Giving us:
var treeData =
{
"name": "Top Level",
"children": [
{
"name": "Level 2: A",
"children": [
{ "name": "Son of A" },
{ "name": "Daughter of A" }
]
},
{ "name": "Level 2: B" }
]
};
// Set the dimensions and margins of the diagram
var margin = {top: 20, right: 90, bottom: 30, left: 90},
width = 600 - margin.left - margin.right,
height = 300 - 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("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.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', 1e-6)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
// 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(!isTransitioning(d3.selectAll("circle"))) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
}
}
function isTransitioning(selection) {
var transitioning = false;
selection.each(function() { if(d3.active(this)) { transitioning = true; } })
return transitioning;
}
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
<script src="https://d3js.org/d3.v4.min.js"></script>
I had good results with selecting only circles (you can click twice without error and without stopping the transition from the looks of it), but in some cases you might want to select all items with a transition. In this example if selecting all the gs you have to wait until all transitions are done before updating again by click:
var treeData =
{
"name": "Top Level",
"children": [
{
"name": "Level 2: A",
"children": [
{ "name": "Son of A" },
{ "name": "Daughter of A" }
]
},
{ "name": "Level 2: B" }
]
};
// Set the dimensions and margins of the diagram
var margin = {top: 20, right: 90, bottom: 30, left: 90},
width = 600 - margin.left - margin.right,
height = 300 - 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("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.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', 1e-6)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
// 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(!isTransitioning(d3.selectAll("g"))) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
}
}
function isTransitioning(selection) {
var transitioning = false;
selection.each(function() { if(d3.active(this)) { transitioning = true; } })
return transitioning;
}
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
<script src="https://d3js.org/d3.v4.min.js"></script>

You can maybe grab the onclik event and throttle the click the duration of the animation in this case 750 milisecs

You need to be able to tell if an animation is currently ongoing, and also deal with multiple animations being possible at once. I made a fork here: http://blockbuilder.org/WilliamNHarvey/4a39d034cef90be249b5ab003ecf775d
Make an array that holds current animations
var animations = []
Then on click, check if the current node is already animated. If so, cancel the click event. If not, add it to the animations queue. Set a timeout to remove it after 750 milliseconds
function click(d) {
if (isAnimated(d)) return;
animations.push(d);
setTimeout(function(){ removeAnimation(d) }, duration);
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
The two functions here, isAnimated and removeAnimation, simply loop through the nodes to find the one you're looking for
function isAnimated(d) {
res = false;
animations.forEach(function(e, i) {
if(e.id == d.id) res = true;
});
return res;
}
function removeAnimation(d) {
animations.forEach(function(e, i) {
if(e.id == d.id) animations.splice(i, 1);
});
}

Related

After Drag and Drop D3 TreeView control Zooming starts with the initial position

I have faced the below issue when we try to zoom the tree view control after dragging and dropping it into some other location of the HTML body it goes to the initial position and performed zooming. Can you please advise me to zoom the tee-view in the drag and drop location itself? I have attached the sample for your reference.
var treeData =
{
"name": "Root",
"children": [
{
"name": "Item 1",
"children": [
{ "name": "Item 3" },
{ "name": "Item 4" }
]
},
{
"name": "Item 2",
"children": [
{ "name": "Item 5" },
{ "name": "Item 6" }
]
}
]
};
// Set the dimensions and margins of the diagram
var margin = {top: 20, right: 10, bottom: 30, left: 50},
width = 1520 - margin.left - margin.right,
height = 705 - margin.top - margin.bottom;
function dragged(d) {
debugger;
var test = d3.select(this).attr("transform");
d3.select(this).attr("transform", 'translate(' + (d3.event.sourceEvent.screenX - 400) + ',' + (d3.event.sourceEvent.screenY - 400) + ') ' + test.slice(test.indexOf('scale(')));
}
// 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("#TreeView").append("svg")
.attr("id", ("D3TreeViewSvg"))
.attr("width", 1520)
.attr("height", 705)
.attr("style", "margin: auto;display: block;overflow: visible;")
.append("g")
.attr("class", "D3TreeViewG")
.attr("transform", "translate("+ margin.left + "," + margin.top + ") scale(0.99)")
.call(d3.drag().on("drag", dragged))
.call(d3.zoom().on("zoom", function () {
debugger;
svg.attr('transform', 'translate(' + d3.event.transform.x + ',' + d3.event.transform.y + ') scale(' + d3.event.transform.k + ')');
}));
var rect = svg.append("rect")
.attr("width", width)
.attr("height", height)
.style("fill", "none")
.style("pointer-events", "all");
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
}
}
setTimeout(function(){
$('#' + 'D3TreeViewSvg').css('width', (($(".D3TreeViewG")[0].getBoundingClientRect().width) + 'px'));
}, 1000);
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', 1e-6)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
// 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);
}
}
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 20px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script src="https://d3js.org/d3.v4.min.js"></script>
<div id="TreeViewParent" style="height:705px;width:1520px;">
<div id="TreeView" style="height:100%;width:100%;"></div>
</div>

change family member color in family tree in d3.js?

I have created a family tree using d3.js. Can anyone please guide me on how to change the color of children? like Relativistic Physics or Modern Physics? I don't know how to select a single child and change the color. Thank you
Code Link: https://codepen.io/woldsl/pen/abEQJYP
You can change the color of the node based on the text and you can maintain a color schema for the text that you needed to change (If that's the goal u want to achieve).
var treeData = {
name: " physic ",
children: [
{
name: "Classical Physics ",
children: [
{
name: "Relativistic Physics"
},
{
name: "Quantum Mechanics"
}
]
},
{
name: "Modern Physics"
},
{
name: "Atomic Physics"
}
]
};
var colorSchema = {
"Relativistic Physics": "red",
"Modern Physics": "yellow"
};
// Set the dimensions and margins of the diagram
var margin = { top: 20, right: 120, bottom: 30, left: 120 },
width = 3000 - margin.left - margin.right,
height = 800 - 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("body")
.append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.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", 1e-6)
.style("fill", function (d) {
return d._children ? "red" : "yellow";
});
// 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 (
colorSchema[d.data.name] || (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);
}
}
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
font-weight: bold;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
.color {
color: #ff0000;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.7.0/d3.min.js"></script>
You can always add the color that u needed for a text in the colorSchema.
<meta charset="UTF-8">
<style>
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
font-weight: bold;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
.color {
color: #FF0000 ;
}
</style>
<!-- load the d3.js library -->
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
var treeData =
{
"name": " physic ",
"level":"red",
"children": [
{
"name": "Classical Physics ",
"level":"green",
"children" : [
{
"name" : "Relativistic Physics",
},
{
"name" : "Quantum Mechanics",
},
]
},
{
"name": "Modern Physics",
},
{
"name": "Atomic Physics",
},
]}
// Set the dimensions and margins of the diagram
var margin = {top: 20, right: 120, bottom: 30, left: 120},
width = 3000 - margin.left - margin.right,
height = 800 - 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("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.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', 1e-6)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
// 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", d => d.data.level)
.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);
}
}
</script>

Trying to give D3 treediagram css styling

I am having a hard time giving my tree diagram style. Now when it renders it is just a fat unsymmetrical transition diagonal. I have tried adding !important; on the css class .link but it doesn't change anything. I have also tried adding .style('fill', 'none', 'stroke', '#ccc', 'stroke-width', '2px') directly on the links in the d3 code part but it still doesn't work. Someone with better knowledge that have any input on this? Thanks.
I attach a screenshot of the treediagram and the code bellow.
Treediagram_screenshot
<template>
<section id="plugin_tree-diagram">
I am a tree!
</section>
<div id="svgcontainer">
<button>roll</button>
<span id="roll-value"></span>
</div>
</template>
<style scoped>
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none !important;
stroke: #ccc !important;
stroke-width: 2px !important;
}
</style>
<script >
import { defineComponent } from 'vue';
import * as d3 from 'd3'
import {
select,
line,
scaleLinear,
min,
max,
curveBasis,
axisBottom,
axisLeft,
} from "d3";
// import * as d3select from 'd3-selection';
export default defineComponent({
name: 'TreeDiagram',
setup() {
return {}
},
mounted() {
this.$nextTick(() => {
var treeData =
{
"name": "Top Level",
"children": [
{
"name": "Slag 1",
"children": [
{ "name": "1" },
{ "name": "2" },
{ "name": "3" },
{ "name": "4" },
{ "name": "5" },
{ "name": "6" }
]
},
{ "name": "Level 2: B" }
]
};
// 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("#svgcontainer").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.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. Hur långt diagrammet ska sträcka sig.
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', 1e-6)
.style("fill", function(d) {
return d._children ? "red" : "#000";
});
// 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 ? "red" : "#000";
})
.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; })
.style('fill', 'none', 'stroke', '#ccc', 'stroke-width', '2px');
// Enter any new links at the parent's previous position.
var linkEnter = link.enter().insert('path', "g")
.attr("class", "link")
// .style('fill', 'none', 'stroke', '#ccc', 'stroke-width', '2px')
.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
// Bug i denna funktion med diagonalen.
function diagonal(s, d) {
const 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(event, d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
}
});
},
});
</script>
Seems like the problem was the useage of <style scoped>
once I removed that it worked like intended.

How to have marker end enable to end of path in a d3 tree

Below is my code snippet where I would like to have multiple arrowhead markers at the end of my path pointing it towards the children instead of the parent. But I have been able to point a single arrow marker towards my parent but not a child. Please let me know what needs to be done
The below image shows the arrow pointing towards the parent. I would like to have it point towards children.
The below image shows is the plain code without arrow markers
I would like to see the below image like type functionality to my code
<!DOCTYPE html>
<meta charset="UTF-8">
<style>
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
.link path {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
.link text {
font: 12px sans-serif;
stroke: #333;
stroke-width: 1;
}
</style>
<body>
<!-- load the d3.js library -->
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
var treeData =
{
"name": "Top Level",
"linkname": "null",
"children": [
{
"name": "Level 2: A",
"linkname": "Link_1",
"children": [
{ "name": "Son of A", "linkname": "Link_2.1" },
{ "name": "Daughter of A", "linkname": "Link_2.2" }
]
},
{ "name": "Level 2: B", "linkname": "Link_3", }
]
};
// 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("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.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.filter(function (d) {
return (!d.data.type || d.data.type !== 'data');
}).append('circle')
.attr('class', 'node')
.attr('r', 1e-6)
.style("fill", function (d) {
return d._children ? "lightsteelblue" : "#fff";
});
nodeEnter.filter(function (d) {
return (d.data.type && d.data.type === 'data');
}).append('rect')
.attr('class', 'node')
.attr('width', 20)
.attr('height', 20)
.attr('y', -10)
.attr('x', -10)
.style("fill", function (d) {
return d._children ? "lightsteelblue" : "#fff";
});
// Add labels for the nodes
nodeEnter.append('text')
.attr("dy", "2em")
.attr("x", function (d) {
return d.children || d._children ? 13 : 13;
})
.attr("text-anchor", function (d) {
return d.children || d._children ? "start" : "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('g.link')
.data(links, function (d) {
return d.id;
});
// Enter any new links at the parent's previous position.
var linkEnter = link.enter().insert('g', 'g')
.attr("class", "link");
linkEnter.append('text')
.attr("class","linkLabels")
.text(function (d, i) {
if (d.parent && d.parent.children.length > 1) {
if (!d.parent.index) d.parent.index = 0;
return d.data.linkname;
}
})
.attr("opacity",0)
.attr('dy', "-1em");
linkEnter.append('path')
.attr('d', function (d) {
var o = {
x: source.x0,
y: source.y0
}
return diagonal(o, o)
})
.on("mouseover", function(){
d3.select(this.parentNode).select("text").attr("opacity",1);
})
.on("mouseleave", function(){
d3.select(this.parentNode).select("text").attr("opacity",0);
})
// UPDATE
var linkUpdate = linkEnter.merge(link);
// Transition back to the parent element position
linkUpdate.select('path').transition()
.duration(duration)
.attr('d', function (d) {
return diagonal(d, d.parent)
});
linkUpdate.select('text').transition()
.duration(duration)
.attr('transform', function (d) {
if (d.parent) {
return 'translate(' + ((d.parent.y + d.y) / 2) + ',' + ((d.parent.x + d.x) / 2) + ')'
}
})
// Remove any exiting links
link.exit().each(function (d) {
d.parent.index = 0;
})
var linkExit = link.exit()
.transition()
.duration(duration);
linkExit.select('path')
.attr('d', function (d) {
var o = {
x: source.x,
y: source.y
}
return diagonal(o, o)
})
linkExit.select('text')
.style('opacity', 0);
linkExit.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);
}
}
</script>
</body>
Probably not 100% what you want, but can be a starting point for you, basically I did it by manipulating marker attributes .attr("orient", "auto-start-reverse") check the MDN documentation for more information about this attribute, also refX, and refY finally the path attribute I used marker-start instead of marker-end since in this example the path drawn from the children to the parent not the reverse
if this is not what you want, there is another stack-overflow question that is a bit close to your case but its not a tree but can help:
Align Marker on node edges D3 Force Layout
var treeData = {
name: "Top Level",
linkname: "null",
children: [
{
name: "Level 2: A",
linkname: "Link_1",
children: [
{ name: "Son of A", linkname: "Link_2.1" },
{ name: "Daughter of A", linkname: "Link_2.2" }
]
},
{ name: "Level 2: B", linkname: "Link_3" }
]
};
// 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("body")
.append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
svg
.append("svg:defs")
.selectAll("marker")
.data(["end"]) // Different link/path types can be defined here
.enter()
.append("svg:marker") // This section adds in the arrows
.attr("id", String)
.attr("viewBox", "0 -5 10 10")
.attr("refX", 15)
.attr("refY", 0)
.attr("markerWidth", 6)
.attr("markerHeight", 6)
.attr("orient", "auto-start-reverse")
.append("svg:path")
.attr("d", "M0,-5L10,0L0,5");
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
.filter(function(d) {
return !d.data.type || d.data.type !== "data";
})
.append("circle")
.attr("class", "node")
.attr("r", 1e-6)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
nodeEnter
.filter(function(d) {
return d.data.type && d.data.type === "data";
})
.append("rect")
.attr("class", "node")
.attr("width", 20)
.attr("height", 20)
.attr("y", -10)
.attr("x", -10)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
// Add labels for the nodes
nodeEnter
.append("text")
.attr("dy", "2em")
.attr("x", function(d) {
return d.children || d._children ? 13 : 13;
})
.attr("text-anchor", function(d) {
return d.children || d._children ? "start" : "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("g.link").data(links, function(d) {
return d.id;
});
// Enter any new links at the parent's previous position.
var linkEnter = link
.enter()
.insert("g", "g")
.attr("class", "link");
linkEnter
.append("text")
.attr("class", "linkLabels")
.text(function(d, i) {
if (d.parent && d.parent.children.length > 1) {
if (!d.parent.index) d.parent.index = 0;
return d.data.linkname;
}
})
.attr("opacity", 0)
.attr("dy", "-1em");
linkEnter
.append("path")
.attr("d", function(d) {
var o = {
x: source.x0,
y: source.y0
};
return diagonal(o, o);
})
.on("mouseover", function() {
d3.select(this.parentNode)
.select("text")
.attr("opacity", 1);
})
.on("mouseleave", function() {
d3.select(this.parentNode)
.select("text")
.attr("opacity", 0);
})
.attr("stroke-linecap", "round")
.attr("marker-start", "url(#end)");
// UPDATE
var linkUpdate = linkEnter.merge(link);
// Transition back to the parent element position
linkUpdate
.select("path")
.transition()
.duration(duration)
.attr("d", function(d) {
return diagonal(d, d.parent);
});
linkUpdate
.select("text")
.transition()
.duration(duration)
.attr("transform", function(d) {
if (d.parent) {
return (
"translate(" +
(d.parent.y + d.y) / 2 +
"," +
(d.parent.x + d.x) / 2 +
")"
);
}
});
// Remove any exiting links
link.exit().each(function(d) {
d.parent.index = 0;
});
var linkExit = link
.exit()
.transition()
.duration(duration);
linkExit.select("path").attr("d", function(d) {
var o = {
x: source.x,
y: source.y
};
return diagonal(o, o);
});
linkExit.select("text").style("opacity", 0);
linkExit.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);
}
}
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
.link path {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
.link text {
font: 12px sans-serif;
stroke: #333;
stroke-width: 1;
}
<!DOCTYPE html>
<meta charset="UTF-8">
<style>
</style>
<body>
<!-- load the d3.js library -->
<script src="https://d3js.org/d3.v4.min.js"></script>
</body>

d3 v4 tree zoom out when a node expanded

I am using d3.tree to create my tree hierarchy, I am relatively new to this lib, so I need a little help.
var treeData = {{ data | safe }};
// Set the dimensions and margins of the diagram
var margin = {top: 30, right: 90, bottom: 30, left: 150},
width = $('#tree-container').width(),
height = $('#tree-container').height();
// 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("#tree-container").append("svg")
.attr("width", width)
.attr("height", height)
.call(d3.zoom().on("zoom", function () {
svg.attr("transform", d3.event.transform)
}))
.append("g")
.attr("width", width)
.attr("height", height)
.attr("id", "place")
.attr("transform", "translate("
+ (width/2) + "," + margin.top + ")");
var i = 0,
duration = 750,
root;
// declares a tree layout and assigns the size
var treemap = d3.tree()
.nodeSize([70, 10]);
// Assigns parent, children, height, depth
root = d3.hierarchy(treeData, function(d) { return d.children; });
root.x0 = 0;
root.y0 = width / 2;
// 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
}
}
var nodes;
function update(source) {
// Assigns the x and y position for the nodes
var treeData = treemap(root);
// Compute the new tree layout.
nodes = treeData.descendants();
links = treeData.descendants().slice(1);
// Normalize for fixed-depth.
nodes.forEach(function(d){ //HERE
d.y = d.depth * 120;
});
// ****************** 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.x0 + "," + source.y0 + ")";
});
// Add Circle for the nodes
nodeEnter.append('circle')
.attr('class', 'node')
.attr('id', function(d) { return "circle-"+d.data.name; })
.attr('r', 1e-6)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";// make text color appear read or as data.color
}).on('click', click);
// Add labels for the nodes
nodeEnter.append('text')
.attr("dy", "0.45em")
.attr("y", function(d) {
return d.children || d._children ? -13 : 13;
})
.attr("text-anchor", function(d) {
return d.children || d._children ? "end" : "start";
})
.attr("cursor", "pointer")
.text(function(d) { return d.data.name; })
.on("click", textClick);
// 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.x + "," + d.y + ")";
});
// Update the node attributes and style
nodeUpdate.select('circle.node')
.attr('r', 10)
.style("fill", function(d) { return d._children ? d.data.ncolor : "#fff"; }) // change color of inner circle
.style("stroke", function (d) { return d.data.ncolor; }) // changing color of outere circle
.attr('cursor', 'pointer');
// Remove any exiting nodes
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + source.x + "," + source.y + ")";
})
.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")
.style("stroke", function (d) { return d.data.color; }) // Place where color of previous link changes
.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.x + "," + s.y +
"C" + (s.x + d.x) / 2 + " " + s.y + ","
+ (s.x + d.x) / 2 + " " + d.y + ","
+ d.x + " " + d.y;
return path
}
// Toggle children on click.
function click(d) {
conosle.log();
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
It actually works, but what I am looking for is the way to have everything inside my viewing window. Like if someone click on node it expands and if children nodes overflow(go out of the window), I need to zoom out, so they will be visible. Hope there is d3 jedi-master to answer me :)))
This is very hard to answer without seeing your actual data or a running version of your code, but here is a suggestion. When you do this:
var treemap = d3.tree()
.nodeSize([70, 10]);
You're setting the size of each node, but not the whole layout. Also, according to the API,
When a node size is specified, the root node is always positioned at ⟨0, 0⟩.
Here is an example: I just forked Bostock's tree example, setting the nodeSize, you can see that the nodes are going outside the SVG: http://blockbuilder.org/anonymous/7a84944610c7e6b3b9ebf063977955c9
So, a possible solution is using size instead of nodeSize:
var treemap = d3.tree()
.nodeSize([width, height]);
Here is the original tree example using size, for comparison: http://blockbuilder.org/mbostock/4339083

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