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Simple D3 Slider
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Title</title> | |
| <script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| <script src="simpleD3Slider.js"></script> | |
| </head> | |
| <body> | |
| <div id="vis"></div> | |
| </body> | |
| <script> | |
| var svg = d3.select("#vis").append("svg").attr("width", 1000).attr("height", 700), | |
| slider1 = new simpleSlider(), | |
| slider2 = new simpleSlider(), | |
| circle = svg.append("circle").attr("cx", 50).attr("cy", 100).attr("r", 30); | |
| slider1.width(200).x(30).y(200).value(1.0).event(function(){ | |
| circle.attr("r", 30 * slider1.value()); | |
| }); | |
| slider2.width(200).x(30).y(230).value(0.5).event(function(){ | |
| circle.attr("cx", 50 + (170 * slider2.value())); | |
| }); | |
| svg.call(slider1); | |
| svg.call(slider2); | |
| </script> | |
| </html> |
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| /* Simple, reusable slider in pure d3 */ | |
| function simpleSlider () { | |
| var width = 100, | |
| value = 0.5, /* Domain assumes to be [0 - 1] */ | |
| event, | |
| x = 0, | |
| y = 0; | |
| function slider (selection) { | |
| //Line to represent the current value | |
| var valueLine = selection.append("line") | |
| .attr("x1", x) | |
| .attr("x2", x + (width * value)) | |
| .attr("y1", y) | |
| .attr("y2", y) | |
| .style({stroke: "#51CB3F", | |
| "stroke-linecap": "round", | |
| "stroke-width": 6 }); | |
| //Line to show the remaining value | |
| var emptyLine = selection.append("line") | |
| .attr("x1", x + (width * value)) | |
| .attr("x2", x + width) | |
| .attr("y1", y) | |
| .attr("y2", y) | |
| .style({ | |
| "stroke": "#ECECEC", | |
| "stroke-linecap": "round", | |
| "stroke-width": 6 | |
| }); | |
| var drag = d3.behavior.drag().on("drag", function() { | |
| var newX = d3.mouse(this)[0]; | |
| if (newX < x) | |
| newX = x; | |
| else if (newX > x + width) | |
| newX = x + width; | |
| value = (newX - x) / width; | |
| valueCircle.attr("cx", newX); | |
| valueLine.attr("x2", x + (width * value)); | |
| emptyLine.attr("x1", x + (width * value)); | |
| if (event) | |
| event(); | |
| d3.event.sourceEvent.stopPropagation(); | |
| }) | |
| //Draggable circle to represent the current value | |
| var valueCircle = selection.append("circle") | |
| .attr("cx", x + (width * value)) | |
| .attr("cy", y) | |
| .attr("r", 8) | |
| .style({ | |
| "stroke": "black", | |
| "stroke-width": 1.0, | |
| "fill": "white" | |
| }) | |
| .call(drag); | |
| } | |
| slider.x = function (val) { | |
| x = val; | |
| return slider; | |
| } | |
| slider.y = function (val) { | |
| y = val; | |
| return slider; | |
| } | |
| slider.value = function (val) { | |
| if (val) { | |
| value = val; | |
| return slider; | |
| } else { | |
| return value; | |
| } | |
| } | |
| slider.width = function (val) { | |
| width = val; | |
| return slider; | |
| } | |
| slider.event = function (val) { | |
| event = val; | |
| return slider; | |
| } | |
| return slider; | |
| } |
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