How to change properties of elements in a SVG when I mouseover an element of a second SVG using D3
Question
I have two SVGs and would like to change properties of elements of one SVG when I mouseover an element of the other SVG. Currently, I struggle with the appropriate selection of the elements (explained in more detail below the code). Here is the jsfiddle for it: jsfiddle and here is the entire code:
<!DOCTYPE html>
<html>
<head>
<title>two svgs</title>
<style>
.sweepline{
stroke:blue;
stroke-width:3;
}
#tooltip {
position: absolute;
width: 200px;
height: auto;
padding: 10px;
background-color: white;
-webkit-border-radius: 10px;
-moz-border-radius: 10px;
border-radius: 10px;
-webkit-box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
pointer-events: none;
}
#tooltip.hidden {
display: none;
}
#tooltip p {
margin: 0;
font-family: sans-serif;
font-size: 16px;
line-height: 20px;
}
</style>
</head>
<body>
<div id = 'lines'></div>
<div id = 'chart'></div>
<div id="tooltip" class="hidden">
<p><strong>Name of line</strong></p>
<p>that work's: <span id="nameLine">100</span></p>
</div>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var width = 200
var height = 200
//names of the lines
var names = ['aaa', 'bbb', 'ccc']
//coordinates of the lines
var x1Val = [5,10,25]
var x2Val = [50,40,90]
var y1Val = [5,25,150]
var y2Val = [5,100,150]
//create SVG
var mySvg = d3.select("#lines").append("svg")
.attr("width", width)
.attr("height", height);
//add all the lines to the svg
for (i=0; i < x1Val.length; i++){
mySvg.append("line")
.attr("x1", x1Val[i])
.attr("y1", y1Val[i])
.attr("x2", x2Val[i])
.attr("y2", y2Val[i])
.attr("id", names[i])
.attr("class","sweepline")
//when 'touched', change color of line and add tooltip with name of line
.on("mouseover", function(d) {
d3.select(this).attr("class","sweepline").style("stroke", "red");
var xPosition = parseFloat(d3.select(this).attr("x1")) + 100;
var yPosition = parseFloat(d3.select(this).attr("y1")) + 50;
//Update the tooltip position and value
d3.select("#tooltip")
.style("left", xPosition + "px")
.style("top", yPosition + "px")
.select("#nameLine")
.text(d3.select(this).attr("id"));
//Show the tooltip
d3.select("#tooltip").classed("hidden", false);
})
//change the color back and hide tooltip
.on("mouseout", function() {
d3.select(this).attr("class","sweepline").style("stroke", "blue");
d3.select("#tooltip").classed("hidden", true);
})
}
//create second tooltip
var mySvg2 = d3.select("#chart").append("svg")
.attr("width", width)
.attr("height", height);
mySvg2.append('circle')
.attr("cx", 30)
.attr("cy", 30)
.attr("r", 20)
.on("mouseover", function(d) {
d3.select(this).style("fill", "blue");
//d3.select('#lines').select(whatGoesInHere?).attr("class", "sweepline").style("stroke", "red");
});
</script>
</body>
</html>
So first I create a SVG called mySvg and add the lines using some coordinates provided in x1Val , x2Val , y1Val and y2Val , respectively. This SVG goes into the div called lines . For each of the lines, there is also a tooltip which displays the name of the line when I mouseover . All that works fine.
Then I create a second SVG called mySvg2 which contains only a circle and goes into the div called chart . When I mouseover this circle, I would like to change the color of the lines in mySvg to red, however, I fail to select these lines correctly. I tried several versions of this:
d3.select('#lines').select(whatGoesInHere?).attr("class", "sweepline").style("stroke", "red");
but all my approaches failed.
My question is: How do I have to modify my code in order to change the colors of one or all lines in mySvg when I mouseover the circle in mySvg2 ?
1 answers
solution1
2 ACCPTED 2015-08-28 13:57:16
Just select the line elements which are inside #lines :
d3.select('#lines').selectAll("line").attr("class", "sweepline").style("stroke", "red");
I have updated your JSFiddle .
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