This variant of the multitouch drag example uses HTML div elements rather than SVG circles. A fancy box shadow reinforces the sense that dragged circles are temporarily elevated above the page.
Last active
February 20, 2018 06:15
-
-
Save mbostock/9669633 to your computer and use it in GitHub Desktop.
Multitouch Drag II
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
| license: gpl-3.0 |
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> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="width=device-width"> | |
| <style> | |
| html, | |
| body { | |
| height: 100%; | |
| margin: 0; | |
| overflow: hidden; | |
| } | |
| div { | |
| position: absolute; | |
| } | |
| </style> | |
| <body> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var width = self.frameElement ? 960 : innerWidth, | |
| height = self.frameElement ? 500 : innerHeight; | |
| var data = d3.range(20).map(function() { return [Math.random() * width, Math.random() * height]; }); | |
| var transform = ["", "-webkit-", "-moz-", "-ms-", "-o-"].reduce(function(p, v) { return v + "transform" in document.body.style ? v : p; }) + "transform"; | |
| var color = d3.scale.category10(); | |
| var radius0 = 32, | |
| radius1 = 48; | |
| var drag = d3.behavior.drag() | |
| .origin(function(d) { return {x: d[0], y: d[1]}; }) | |
| .on("dragstart", dragstarted) | |
| .on("drag", dragged) | |
| .on("dragend", dragended); | |
| d3.select("body") | |
| .on("touchstart", nozoom) | |
| .on("touchmove", nozoom) | |
| .selectAll("div") | |
| .data(data) | |
| .enter().append("div") | |
| .style(transform, function(d) { return "translate(" + d[0] + "px," + d[1] + "px)"; }) | |
| .style("margin-top", -radius0 + "px") | |
| .style("margin-left", -radius0 + "px") | |
| .style("width", radius0 * 2 + "px") | |
| .style("height", radius0 * 2 + "px") | |
| .style("border-radius", radius0 + "px") | |
| .style("background", function(d, i) { return color(i); }) | |
| .call(drag); | |
| function dragstarted() { | |
| this.parentNode.appendChild(this); | |
| d3.select(this).transition() | |
| .ease("elastic") | |
| .duration(500) | |
| .style("margin-top", -radius1 + "px") | |
| .style("margin-left", -radius1 + "px") | |
| .style("width", radius1 * 2 + "px") | |
| .style("height", radius1 * 2 + "px") | |
| .style("border-radius", radius1 + "px") | |
| .styleTween("box-shadow", function() { return d3.interpolate("0 0px 0px rgba(0,0,0,0)", "0 4px 8px rgba(0,0,0,.3)"); }); | |
| } | |
| function dragged(d) { | |
| d[0] = d3.event.x; | |
| d[1] = d3.event.y; | |
| d3.select(this) | |
| .style(transform, function(d) { return "translate(" + d[0] + "px," + d[1] + "px)"; }); | |
| } | |
| function dragended() { | |
| d3.select(this).transition() | |
| .ease("elastic") | |
| .duration(500) | |
| .style("margin-top", -radius0 + "px") | |
| .style("margin-left", -radius0 + "px") | |
| .style("width", radius0 * 2 + "px") | |
| .style("height", radius0 * 2 + "px") | |
| .style("border-radius", radius0 + "px") | |
| .styleTween("box-shadow", function() { return d3.interpolate("0 4px 8px rgba(0,0,0,.3)", "0 0px 0px rgba(0,0,0,0)"); }); | |
| } | |
| function nozoom() { | |
| d3.event.preventDefault(); | |
| } | |
| </script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment