-
-
Save couchand/6394506 to your computer and use it in GitHub Desktop.
Distinguishing click and double-click in D3.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <style> | |
| body { margin:0; padding:0; } | |
| #map { width:960px; height:500px; background:cyan; } | |
| </style> | |
| </head> | |
| <body> | |
| <div id='map'></div> | |
| <script> | |
| function clickcancel() { | |
| var event = d3.dispatch('click', 'dblclick'); | |
| function cc(selection) { | |
| var down, | |
| tolerance = 5, | |
| last, | |
| wait = null; | |
| // euclidean distance | |
| function dist(a, b) { | |
| return Math.sqrt(Math.pow(a[0] - b[0], 2), Math.pow(a[1] - b[1], 2)); | |
| } | |
| selection.on('mousedown', function() { | |
| down = d3.mouse(document.body); | |
| last = +new Date(); | |
| }); | |
| selection.on('mouseup', function() { | |
| if (dist(down, d3.mouse(document.body)) > tolerance) { | |
| return; | |
| } else { | |
| if (wait) { | |
| window.clearTimeout(wait); | |
| wait = null; | |
| event.dblclick(d3.event); | |
| } else { | |
| wait = window.setTimeout((function(e) { | |
| return function() { | |
| event.click(e); | |
| wait = null; | |
| }; | |
| })(d3.event), 300); | |
| } | |
| } | |
| }); | |
| }; | |
| return d3.rebind(cc, event, 'on'); | |
| } | |
| var cc = clickcancel(); | |
| d3.select('#map').call(cc); | |
| cc.on('click', function() { | |
| d3.select('#map').text(d3.select('#map').text() + 'click, '); | |
| }); | |
| cc.on('dblclick', function() { | |
| d3.select('#map').text(d3.select('#map').text() + 'dblclick, '); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
If anyone is using Observable, I've ported the v4 update (and verified for v5) over here: https://observablehq.com/@austince/cancelable-click