Cross Element Event Handling

_.md

[ Launch: Cross Element Event Handling ] 9031061 by ljbrown238

config.json

{"description":"Cross Element Event Handling","endpoint":"","display":"svg","public":true,"require":[],"fileconfigs":{"inlet.js":{"default":true,"vim":false,"emacs":false,"fontSize":12}},"fullscreen":false,"play":false,"loop":false,"restart":false,"autoinit":true,"pause":true,"loop_type":"pingpong","bv":false,"nclones":15,"clone_opacity":0.4,"duration":3000,"ease":"linear","dt":0.01}

inlet.js

var svg = d3.select("svg");

// Create the custom event dispatch object
var dispatch = d3.dispatch("customHover");

var instructions = svg.append("text")
	.attr("x",20)
	.attr("y",25)
	.text("Move your mouse over the blue square to see x,y values appear.");

svg.append("rect")
	.attr("x",20)
	.attr("y",35)
	.attr("width",100)
	.attr("height",100)
	.attr("fill","blue")
	// Here we will call the custom dispatch function when an event happens
	.on("mousemove", function() { dispatch.customHover(this); });

var myText1 = svg.append("text")
	.attr("x",20)
	.attr("y",156)
	.text("mouse x: ");

var myText2 = svg.append("text")
	.attr("x",20)
	.attr("y",200)
	.text("mouse y: ");

// We will listen for the custom event, and when it happens, we will
// update the attributes of the two SVG text elements
dispatch.on("customHover",function(_this) { 
  myText1.text("mouse x: " + d3.mouse(_this)[0]);
  myText2.text("mouse x: " + d3.mouse(_this)[1]);
});