Testing the graph-scroll library to add a progress value in each section
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May 31, 2016 09:00
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graph-scroll modification test
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scrolling: yes | |
licence: mit |
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function graphScroll() { | |
var windowHeight, | |
dispatch = d3.dispatch("scroll", "active"), | |
sections = d3.select('null'), | |
i = NaN, | |
sectionPos = [], | |
n, | |
graph = d3.select('null'), | |
isFixed = null, | |
isBelow = null, | |
container = d3.select('body'), | |
containerStart = 0, | |
belowStart, | |
eventId = Math.random() | |
function reposition(){ | |
var i1 = 0 | |
sectionPos.forEach(function(d, i){ | |
if (d < pageYOffset - containerStart + 200) i1 = i | |
}) | |
i1 = Math.min(n - 1, i1) | |
if (i != i1){ | |
sections.classed('graph-scroll-active', function(d, i){ return i === i1 }) | |
dispatch.active(i1) | |
i = i1 | |
} | |
var isBelow1 = pageYOffset > belowStart | |
if (isBelow != isBelow1){ | |
isBelow = isBelow1 | |
graph.classed('graph-scroll-below', isBelow) | |
} | |
var isFixed1 = !isBelow && pageYOffset > containerStart | |
if (isFixed != isFixed1){ | |
isFixed = isFixed1 | |
graph.classed('graph-scroll-fixed', isFixed) | |
} | |
var pos = pageYOffset - 10 - containerStart; | |
var prevTop = sectionPos[i]; | |
var nextTop = (i+1<sectionPos.length?sectionPos[i+1]:(belowStart-containerStart)) - 200 ; | |
var progress = (pos - prevTop) / (nextTop - prevTop); | |
if(progress>=0 && progress <=1) | |
dispatch.scroll(i, progress); | |
} | |
function resize(){ | |
sectionPos = [] | |
var startPos | |
sections.each(function(d, i){ | |
if (!i) startPos = this.getBoundingClientRect().top | |
sectionPos.push(this.getBoundingClientRect().top - startPos) }) | |
var containerBB = container.node().getBoundingClientRect() | |
var graphBB = graph.node().getBoundingClientRect() | |
containerStart = containerBB.top + pageYOffset | |
belowStart = containerBB.bottom - graphBB.height + pageYOffset | |
} | |
function keydown() { | |
if (!isFixed) return | |
var delta | |
switch (d3.event.keyCode) { | |
case 39: // right arrow | |
if (d3.event.metaKey) return | |
case 40: // down arrow | |
case 34: // page down | |
delta = d3.event.metaKey ? Infinity : 1 ;break | |
case 37: // left arrow | |
if (d3.event.metaKey) return | |
case 38: // up arrow | |
case 33: // page up | |
delta = d3.event.metaKey ? -Infinity : -1 ;break | |
case 32: // space | |
delta = d3.event.shiftKey ? -1 : 1 | |
;break | |
default: return | |
} | |
var i1 = Math.max(0, Math.min(i + delta, n - 1)) | |
d3.select(document.documentElement) | |
.interrupt() | |
.transition() | |
.duration(500) | |
.tween("scroll", function() { | |
var i = d3.interpolateNumber(pageYOffset, sectionPos[i1] + containerStart) | |
return function(t) { scrollTo(0, i(t)) } | |
}) | |
d3.event.preventDefault() | |
} | |
var rv ={} | |
rv.container = function(_x){ | |
if (!_x) return container | |
container = _x | |
return rv | |
} | |
rv.graph = function(_x){ | |
if (!_x) return graph | |
graph = _x | |
return rv | |
} | |
rv.eventId = function(_x){ | |
if (!_x) return eventId | |
eventId = _x | |
return rv | |
} | |
rv.sections = function (_x){ | |
if (!_x) return sections | |
sections = _x | |
n = sections.size() | |
d3.select(window) | |
.on('scroll.gscroll' + eventId, reposition) | |
.on('resize.gscroll' + eventId, resize) | |
.on('keydown.gscroll' + eventId, keydown) | |
resize() | |
d3.timer(function() { | |
reposition() | |
return true | |
}) | |
return rv | |
} | |
d3.rebind(rv, dispatch, "on") | |
return rv | |
} |
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<!DOCTYPE html> | |
<head> | |
<meta charset="utf-8"> | |
<meta name="viewport" content="width=device-width, initial-scale=1"> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/topojson/1.6.20/topojson.min.js"></script> | |
<script src="graph-scroll.js"></script> | |
<style> | |
body{ | |
width: 900px; | |
margin: 0px auto; | |
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; | |
} | |
#container, #container2{ | |
position: relative; | |
width: 100%; | |
overflow: auto; | |
} | |
#sections, #sections2{ | |
width: 340px; | |
float: left; | |
} | |
#sections > div, #sections2 > div{ | |
background: white; | |
opacity: .2; | |
margin-bottom:120px; | |
} | |
#sections > div.graph-scroll-active, #sections2 > div.graph-scroll-active{ | |
opacity: 1; | |
} | |
#graph, #graph2{ | |
float: left; | |
margin-left: 40px; | |
} | |
#graph.graph-scroll-fixed, #graph2.graph-scroll-fixed{ | |
position: fixed; | |
top: 0px; | |
margin-left: 380px; | |
} | |
#graph.graph-scroll-below, #graph2.graph-scroll-below { | |
position: absolute; | |
bottom: 0px; | |
margin-left: 380px; | |
} | |
h1{ | |
margin: 50px; | |
} | |
h1, h3{ | |
text-align: center; | |
} | |
</style> | |
</head> | |
<body> | |
<h1>Header</h1> | |
<h3>Praesent ut turpis sed orci cursus pharetra. Sed imperdiet sem at odio vulputate, ut mollis sem porta. Mauris tempor porta lorem, at suscipit felis fringilla sit amet</h3> | |
<div id='container'> | |
<div id='sections'> | |
<div> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla ullamcorper tempus sem, non consectetur nisi finibus ac. Maecenas suscipit mattis turpis et tristique. Phasellus lectus dolor, fermentum eget rutrum a, feugiat sed tellus. Vivamus convallis nec nulla vitae volutpat. Etiam ullamcorper nisl in justo pulvinar, at tincidunt odio ullamcorper. Donec posuere lobortis lacus ut scelerisque. Nullam a sodales magna. Phasellus nec odio arcu. Etiam sollicitudin nec velit id mollis. Vestibulum fringilla, nunc ut mollis interdum, sem risus semper nisl, vel faucibus purus turpis quis diam. Morbi vitae dolor vestibulum, iaculis eros quis, tristique justo. Pellentesque eu libero ultrices tellus consectetur tempor. Mauris pulvinar felis augue, at dapibus nulla facilisis sit amet. Nunc vitae hendrerit metus. Suspendisse dignissim quam at auctor imperdiet. | |
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla ullamcorper tempus sem, non consectetur nisi finibus ac. Maecenas suscipit mattis turpis et tristique. Phasellus lectus dolor, fermentum eget rutrum a, feugiat sed tellus. Vivamus convallis nec nulla vitae volutpat. Etiam ullamcorper nisl in justo pulvinar, at tincidunt odio ullamcorper. Donec posuere lobortis lacus ut scelerisque. Nullam a sodales magna. Phasellus nec odio arcu. Etiam sollicitudin nec velit id mollis. Vestibulum fringilla, nunc ut mollis interdum, sem risus semper nisl, vel faucibus purus turpis quis diam. Morbi vitae dolor vestibulum, iaculis eros quis, tristique justo. Pellentesque eu libero ultrices tellus consectetur tempor. Mauris pulvinar felis augue, at dapibus nulla facilisis sit amet. Nunc vitae hendrerit metus. Suspendisse dignissim quam at auctor imperdiet.</p> | |
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla ullamcorper tempus sem, non consectetur nisi finibus ac. Maecenas suscipit mattis turpis et tristique. Phasellus lectus dolor, fermentum eget rutrum a, feugiat sed tellus. Vivamus convallis nec nulla vitae volutpat. Etiam ullamcorper nisl in justo pulvinar, at tincidunt odio ullamcorper. Donec posuere lobortis lacus ut scelerisque. Nullam a sodales magna. Phasellus nec odio arcu. Etiam sollicitudin nec velit id mollis. Vestibulum fringilla, nunc ut mollis interdum, sem risus semper nisl, vel faucibus purus turpis quis diam. Morbi vitae dolor vestibulum, iaculis eros quis, tristique justo. Pellentesque eu libero ultrices tellus consectetur tempor. Mauris pulvinar felis augue, at dapibus nulla facilisis sit amet. Nunc vitae hendrerit metus. Suspendisse dignissim quam at auctor imperdiet.</p> | |
</div> | |
<div>Praesent ut turpis sed orci cursus pharetra. Sed imperdiet sem at odio vulputate, ut mollis sem porta. Mauris tempor porta lorem, at suscipit felis fringilla sit amet. Mauris feugiat neque eget mi aliquam pellentesque. Aenean augue est, tincidunt at justo eget, pretium ultrices dolor. Cras nec nisl metus. Etiam venenatis id turpis ac consectetur. In a rhoncus arcu, blandit sodales nulla. | |
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla ullamcorper tempus sem, non consectetur nisi finibus ac. Maecenas suscipit mattis turpis et tristique. Phasellus lectus dolor, fermentum eget rutrum a, feugiat sed tellus. Vivamus convallis nec nulla vitae volutpat. Etiam ullamcorper nisl in justo pulvinar, at tincidunt odio ullamcorper. Donec posuere lobortis lacus ut scelerisque. Nullam a sodales magna. Phasellus nec odio arcu. Etiam sollicitudin nec velit id mollis. Vestibulum fringilla, nunc ut mollis interdum, sem risus semper nisl, vel faucibus purus turpis quis diam. Morbi vitae dolor vestibulum, iaculis eros quis, tristique justo. Pellentesque eu libero ultrices tellus consectetur tempor. Mauris pulvinar felis augue, at dapibus nulla facilisis sit amet. Nunc vitae hendrerit metus. Suspendisse dignissim quam at auctor imperdiet.</p> | |
</div> | |
<div> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla ullamcorper tempus sem, non consectetur nisi finibus ac. Maecenas suscipit mattis turpis et tristique. Phasellus lectus dolor, fermentum eget rutrum a, feugiat sed tellus. Vivamus convallis nec nulla vitae volutpat. Etiam ullamcorper nisl in justo pulvinar, at tincidunt odio ullamcorper. Donec posuere lobortis lacus ut scelerisque. Nullam a sodales magna. Phasellus nec odio arcu. Etiam sollicitudin nec velit id mollis. Vestibulum fringilla, nunc ut mollis interdum, sem risus semper nisl, vel faucibus purus turpis quis diam. Morbi vitae dolor vestibulum, iaculis eros quis, tristique justo. Pellentesque eu libero ultrices tellus consectetur tempor. Mauris pulvinar felis augue, at dapibus nulla facilisis sit amet. Nunc vitae hendrerit metus. Suspendisse dignissim quam at auctor imperdiet. | |
</div> | |
</div> | |
<div id='graph'></div> | |
</div> | |
<h1>Section without scroller</h1> | |
<h3> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla ullamcorper tempus sem, non consectetur nisi finibus ac. Maecenas suscipit mattis turpis et tristique. Phasellus lectus dolor, fermentum eget rutrum a, feugiat sed tellus. Vivamus convallis nec nulla vitae volutpat. Etiam ullamcorper nisl in justo pulvinar, at tincidunt odio ullamcorper. Donec posuere lobortis lacus ut scelerisque. Nullam a sodales magna.</h3> | |
<h1>Second scroller</h1> | |
<div id='container2'> | |
<div id='sections2'> | |
<div>Praesent ut turpis sed orci cursus pharetra. Sed imperdiet sem at odio vulputate, ut mollis sem porta. Mauris tempor porta lorem, at suscipit felis fringilla sit amet. Mauris feugiat neque eget mi aliquam pellentesque. Aenean augue est, tincidunt at justo eget, pretium ultrices dolor. Cras nec nisl metus. Etiam venenatis id turpis ac consectetur. In a rhoncus arcu, blandit sodales nulla. </div> | |
<div>Morbi lobortis diam ligula, ut varius leo facilisis id. Integer rutrum orci eu magna venenatis, vel scelerisque arcu ultrices. Vestibulum sit amet eros sem.</div> | |
<div> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla ullamcorper tempus sem, non consectetur nisi finibus ac. Maecenas suscipit mattis turpis et tristique. Phasellus lectus dolor, fermentum eget rutrum a, feugiat sed tellus. Vivamus convallis nec nulla vitae volutpat. Etiam ullamcorper nisl in justo pulvinar, at tincidunt odio ullamcorper. Donec posuere lobortis lacus ut scelerisque. Nullam a sodales magna. Phasellus nec odio arcu. Etiam sollicitudin nec velit id mollis. Vestibulum fringilla, nunc ut mollis interdum, sem risus semper nisl, vel faucibus purus turpis quis diam. Morbi vitae dolor vestibulum, iaculis eros quis, tristique justo. Pellentesque eu libero ultrices tellus consectetur tempor. Mauris pulvinar felis augue, at dapibus nulla facilisis sit amet. Nunc vitae hendrerit metus. Suspendisse dignissim quam at auctor imperdiet.Praesent ut turpis sed orci cursus pharetra. Sed imperdiet sem at odio vulputate, ut mollis sem porta. Mauris tempor porta lorem, at suscipit felis fringilla sit amet. Mauris feugiat neque eget mi aliquam pellentesque. Aenean augue est, tincidunt at justo eget, pretium ultrices dolor. Cras nec nisl metus. Etiam venenatis id turpis ac consectetur. In a rhoncus arcu, blandit sodales nulla. </div> | |
<div>Morbi lobortis diam ligula, ut varius leo facilisis id. Integer rutrum orci eu magna venenatis, vel scelerisque arcu ultrices. Vestibulum sit amet eros sem. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla ullamcorper tempus sem, non consectetur nisi finibus ac. Maecenas suscipit mattis turpis et tristique. Phasellus lectus dolor, fermentum eget rutrum a, feugiat sed tellus. Vivamus convallis nec nulla vitae volutpat. Etiam ullamcorper nisl in justo pulvinar, at tincidunt odio ullamcorper. Donec posuere lobortis lacus ut scelerisque. Nullam a sodales magna. Phasellus nec odio arcu. Etiam sollicitudin nec velit id mollis. Vestibulum fringilla, nunc ut mollis interdum, sem risus semper nisl, vel faucibus purus turpis quis diam. Morbi vitae dolor vestibulum, iaculis eros quis, tristique justo. Pellentesque eu libero ultrices tellus consectetur tempor. Mauris pulvinar felis augue, at dapibus nulla facilisis sit amet. Nunc vitae hendrerit metus. Suspendisse dignissim quam at auctor imperdiet.Praesent ut turpis sed orci cursus pharetra. Sed imperdiet sem at odio vulputate, ut mollis sem porta. Mauris tempor porta lorem, at suscipit felis fringilla sit amet. Mauris feugiat</div> | |
</div> | |
<div id='graph2'></div> | |
</div> | |
<h1>Footer</h1> | |
<h3>Praesent ut turpis sed orci cursus pharetra. Sed imperdiet sem at odio vulputate, ut mollis sem porta. Mauris tempor porta lorem, at suscipit felis fringilla sit amet. Mauris feugiat neque eget mi aliquam pellentesque.</h3> | |
<script> | |
var width = 500, | |
height = 450, | |
r = 40; | |
var svg = d3.select('#graph') | |
.append('svg') | |
.attr({width: width, height: height}); | |
var text = svg.append('text') | |
.attr({x: width/2, y: height/2, "font-family":"sans-serif", "font-size":"20px", fill:"red", "text-anchor":"middle"}); | |
var gs = graphScroll() | |
.container(d3.select('#container')) | |
.graph(d3.selectAll('#graph')) | |
.sections(d3.selectAll('#sections > div')) | |
.on('scroll', function(i, d){ | |
text.text("First scroller, Section: " + i + ", Progress: " + d.toFixed(3)); | |
}); | |
var svg2 = d3.select('#graph2') | |
.append('svg') | |
.attr({width: width, height: height}); | |
var text2 = svg2.append('text') | |
.attr({x: width/2, y: height/2, "font-family":"sans-serif", "font-size":"20px", fill:"blue", "text-anchor":"middle"}); | |
var gs2 = graphScroll() | |
.container(d3.select('#container2')) | |
.graph(d3.selectAll('#graph2')) | |
.sections(d3.selectAll('#sections2 > div')) | |
.on('scroll', function(i, d){ | |
text2.text("Second scroller, Section: " + i + ", Progress: " + d.toFixed(3)); | |
}); | |
</script> | |
</body> |
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