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Suggested redo for snap scroller based on classname #611

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Suggested redo for snap scroller based on classname #611

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62c72aa
Snap Scroller redo
whatfield73 Sep 30, 2014
257902b
Update snap.html
whatfield73 Sep 30, 2014
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148 changes: 148 additions & 0 deletions snap.html
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Original file line number Diff line number Diff line change
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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />

<title>Snapping</title>

<style>
html, body {
padding:0;
margin:0;
width:100%;
height:100%;
}

body {
overflow:auto;
}


h1 {
margin:0;
padding:0;
padding-top:2em;
font-family:sans-serif;
color:#fff;
}
#skrollr-body {
height:100%;
}

#skrollr-body > div {
width:100%;
height:400px;
background:#09f;
text-align:center;
}
.even {
height: 500px;
}

.odd {
background:#f90 !important;
height: 300px;
}
</style>
</head>

<body style="text-align:center;">
<div id="skrollr-body" class= "snap">
<div id="start" class="even snap">
<h1>The different parts of this webpage will snap after you scroll</h1>
</div>
<div class="odd snap" id="a">
<h1>A</h1>
</div>
<div id="b" class="even snap">
<h1>B</h1>
</div>
<div class="odd snap" id="c">
<h1>C</h1>
</div>
<div id="d" class="even snap">
<h1>D</h1>
</div>
</div>

<script type="text/javascript" src="dist/skrollr.min.js"></script>
<script type="text/javascript">
layers = document.getElementsByClassName("snap");
var activeLayer = 0;
var animateUpSettings = {
duration: 200,
done: function() {
document.body.style.overflow = 'auto';
}
};
var animateDownSettings = {
duration: 400,
easing: 'sqrt',
done: animateUpSettings.done
};

var s = skrollr.init({
forceHeight: false,
render: function(info) {
if(this.isAnimatingTo()) {
return;
}

if (activeLayer === (layers.length - 1)) {
var testLayer = activeLayer-1;
var offset = this.relativeToAbsolute(layers[testLayer], 'top', 'top');
if (offset - this.getScrollTop() > 200 ) {
info.direction = 'up';
activeLayer--;
}
else {
console.log ("check", this.getScrollTop(), offset );
return;
}
}
if (info.direction === 'up' && this.lastOffset !== undefined) {
if (this.getScrollTop() === this.lastOffset) {
console.log ("true");
return;
}
}
document.body.style.overflow = 'hidden';
//Make sure to start animating at the last snap pos
//this.setScrollTop(this.lastOffset);

if(info.direction === 'down') {
if (this.getScrollTop() === this.lastOffset) {
return;
}
if(activeLayer + 1 < layers.length) {
activeLayer++;

var offset = this.relativeToAbsolute(layers[activeLayer], 'top', 'top');

//Move down slow with nice easing
this.animateTo(offset, animateDownSettings);
}
} else if(activeLayer > 0) {

activeLayer--;
var offset = this.relativeToAbsolute(layers[activeLayer], 'top', 'top');

//Move up very fast
this.animateTo(offset, animateUpSettings);
}

this.lastOffset = this.relativeToAbsolute(layers[activeLayer], 'top', 'top');
console.log(this.lastOffset);
console.log(this.getScrollTop());






}
});
</script>
</body>

</html>