Here's how HTML page's contents look.
<!DOCTYPE html>
<html>
<head>
<script src=".v4.min.js"></script>
</head>
<body>
<object type="image/svg+xml" data="Map-edited.svg"></object>
<script src="script.js"></script>
</body>
</html>
And here's how script.js looks.
var tooltip = d3.select("body")
.append("div")
.style("position", "absolute")
.style("z-index", "10")
.style("visibility", "hidden")
.text("Hello");
var svg= d3.select("object").select("svg");
svg.selectAll('g')
.on("mouseover",function(){
return tooltip.style("visibility","visible");
})
.on("mousemove",function(){
var offset= 20;
var topPosition= (event.pageY-offset)+"px";
var leftPosition= (event.pageX+offset)+"px";
return tooltip.style("top",topPosition).style("left",leftPosition);
})
.on("mouseout", function(){
return tooltip.style("visibility","hidden");
});
When I open my HTML page, I see the SVG element with all the g elements in it. When I mouseover each g element, no tooltip appears. But if I replace object with the svg tag and its contents, the tooltip works. How do I make d3 select an SVG in an object tag?
Here's how HTML page's contents look.
<!DOCTYPE html>
<html>
<head>
<script src="https://d3js/d3.v4.min.js"></script>
</head>
<body>
<object type="image/svg+xml" data="Map-edited.svg"></object>
<script src="script.js"></script>
</body>
</html>
And here's how script.js looks.
var tooltip = d3.select("body")
.append("div")
.style("position", "absolute")
.style("z-index", "10")
.style("visibility", "hidden")
.text("Hello");
var svg= d3.select("object").select("svg");
svg.selectAll('g')
.on("mouseover",function(){
return tooltip.style("visibility","visible");
})
.on("mousemove",function(){
var offset= 20;
var topPosition= (event.pageY-offset)+"px";
var leftPosition= (event.pageX+offset)+"px";
return tooltip.style("top",topPosition).style("left",leftPosition);
})
.on("mouseout", function(){
return tooltip.style("visibility","hidden");
});
When I open my HTML page, I see the SVG element with all the g elements in it. When I mouseover each g element, no tooltip appears. But if I replace object with the svg tag and its contents, the tooltip works. How do I make d3 select an SVG in an object tag?
- 1 Events on <g> element are only works when there is something under the pointer which belong to this <g> element, such as "circle", "rect", "path". – 1Cr18Ni9 Commented Oct 20, 2017 at 0:15
3 Answers
Reset to default 8You need to access the <object> contentDocument in order to access its contained elements.
To do this, you also need to wait until your <object> has loaded its content.
I'm not too much into d3, so it might not be the best d3 way of doing, but at least it works:
(but not in StackSnippet's null origined iframes...)
fetch('https://upload.wikimedia/wikipedia/mons/f/fd/Ghostscript_Tiger.svg')
.then(r => r.blob())
.then(b => obj.data = URL.createObjectURL(b));
obj.onload = function() { // wait for the svg has loaded
var tooltip = d3.select("body")
.append("div")
.style("position", "absolute")
.style("z-index", "10")
.style("visibility", "hidden")
.text("Hello");
var obj = this; // we're in the object's load event handler.
var svg = d3.select(obj.contentDocument) // get the contentDocument
.select("svg"); // then get the svg inside
svg.selectAll('g')
.on("mouseover", function() {
return tooltip.style("visibility", "visible");
})
.on("mousemove", function() {
var event = d3.event;
var offset = 20;
var topPosition = (event.pageY - offset) + "px";
var leftPosition = (event.pageX + offset) + "px";
return tooltip.style("top", topPosition).style("left", leftPosition);
})
.on("mouseout", function() {
return tooltip.style("visibility", "hidden");
});
};
<script src="https://d3js/d3.v4.min.js"></script>
<object id="obj" type="image/svg+xml"></object>
Fiddle
I have no experience with d3 but this might help. You need to wait untill your window is fully loaded.
// object of my SVG
<object id="fridge" data={FridgePicture} ></object>
window.onload = function() {
// Get the fridgeObject by ID
var fridgeObj = document.getElementById("fridge");
// Get the SVG document inside the Object tag
var fridgeDoc = fridgeObj.contentDocument;
// From here you can get an item you wish e.g:
var rightDoor = fridgeDoc.getElementById("RightDoor");
};
Just a short summery which methods work and which won't:
d3.select(obj.node().contentDocument).select('svg').selectAll('g') // get the contentDocument
console.log('node > svg > g => works!',nsvg)
var obj1 = d3.select('#obj'); // we're in the object's load event handler.
var ng = d3.select(obj1.node().contentDocument).selectAll('g') // get the contentDocument
console.log('node > g => works!',ng)
var obj2 = d3.select('#obj'); // we're in the object's load event handler.
var svg = d3.select(obj2.contentDocument).select('svg').selectAll('g') // get the contentDocument
console.log('select svg > g => fails!',svg)
var obj3 = d3.select('#obj'); // we're in the object's load event handler.
var g = d3.select(obj3.contentDocument).selectAll('g') // get the contentDocument
console.log('select g => fails!',g)
var getElement = document.getElementById('obj').contentDocument
var gElements = d3.select(getElement).select('svg').selectAll('g')
console.log("gElements > d3.select svg > g => works!", gElements);
var svg2 = document.getElementById('obj').contentDocument.getElementsByTagName('g')
console.log("getElementById => works!", svg2);
};
https://jsfiddle/hirschferkel/0wu3z1st/11/