emptyindorill,
количество блоков случайное
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery UI Slider - Slider scrollbar</title>
<link rel="stylesheet" href="https://code.jquery.com/ui/1.11.0/themes/smoothness/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.11.2.js"></script>
<script src="https://code.jquery.com/ui/1.11.0/jquery-ui.js"></script>
<script>/*! Copyright (c) 2013 Brandon Aaron (http://brandon.aaron.sh)
* Licensed under the MIT License (LICENSE.txt).
*
* Version: 3.1.12
*
* Requires: jQuery 1.2.2+
*/
!function(a){"function"==typeof define&&define.amd?define(["jquery"],a):"object"==typeof exports?module.exports=a:a(jQuery)}(function(a){function b(b){var g=b||window.event,h=i.call(arguments,1),j=0,l=0,m=0,n=0,o=0,p=0;if(b=a.event.fix(g),b.type="mousewheel","detail"in g&&(m=-1*g.detail),"wheelDelta"in g&&(m=g.wheelDelta),"wheelDeltaY"in g&&(m=g.wheelDeltaY),"wheelDeltaX"in g&&(l=-1*g.wheelDeltaX),"axis"in g&&g.axis===g.HORIZONTAL_AXIS&&(l=-1*m,m=0),j=0===m?l:m,"deltaY"in g&&(m=-1*g.deltaY,j=m),"deltaX"in g&&(l=g.deltaX,0===m&&(j=-1*l)),0!==m||0!==l){if(1===g.deltaMode){var q=a.data(this,"mousewheel-line-height");j*=q,m*=q,l*=q}else if(2===g.deltaMode){var r=a.data(this,"mousewheel-page-height");j*=r,m*=r,l*=r}if(n=Math.max(Math.abs(m),Math.abs(l)),(!f||f>n)&&(f=n,d(g,n)&&(f/=40)),d(g,n)&&(j/=40,l/=40,m/=40),j=Math[j>=1?"floor":"ceil"](j/f),l=Math[l>=1?"floor":"ceil"](l/f),m=Math[m>=1?"floor":"ceil"](m/f),k.settings.normalizeOffset&&this.getBoundingClientRect){var s=this.getBoundingClientRect();o=b.clientX-s.left,p=b.clientY-s.top}return b.deltaX=l,b.deltaY=m,b.deltaFactor=f,b.offsetX=o,b.offsetY=p,b.deltaMode=0,h.unshift(b,j,l,m),e&&clearTimeout(e),e=setTimeout(c,200),(a.event.dispatch||a.event.handle).apply(this,h)}}function c(){f=null}function d(a,b){return k.settings.adjustOldDeltas&&"mousewheel"===a.type&&b%120===0}var e,f,g=["wheel","mousewheel","DOMMouseScroll","MozMousePixelScroll"],h="onwheel"in document||document.documentMode>=9?["wheel"]:["mousewheel","DomMouseScroll","MozMousePixelScroll"],i=Array.prototype.slice;if(a.event.fixHooks)for(var j=g.length;j;)a.event.fixHooks[g[--j]]=a.event.mouseHooks;var k=a.event.special.mousewheel={version:"3.1.12",setup:function(){if(this.addEventListener)for(var c=h.length;c;)this.addEventListener(h[--c],b,!1);else this.onmousewheel=b;a.data(this,"mousewheel-line-height",k.getLineHeight(this)),a.data(this,"mousewheel-page-height",k.getPageHeight(this))},teardown:function(){if(this.removeEventListener)for(var c=h.length;c;)this.removeEventListener(h[--c],b,!1);else this.onmousewheel=null;a.removeData(this,"mousewheel-line-height"),a.removeData(this,"mousewheel-page-height")},getLineHeight:function(b){var c=a(b),d=c["offsetParent"in a.fn?"offsetParent":"parent"]();return d.length||(d=a("body")),parseInt(d.css("fontSize"),10)||parseInt(c.css("fontSize"),10)||16},getPageHeight:function(b){return a(b).height()},settings:{adjustOldDeltas:!0,normalizeOffset:!0}};a.fn.extend({mousewheel:function(a){return a?this.bind("mousewheel",a):this.trigger("mousewheel")},unmousewheel:function(a){return this.unbind("mousewheel",a)}})});
</script>
<link rel="stylesheet" href="/resources/demos/style.css">
<style>
.scroll-pane{
overflow:auto;
width:488px;
margin:20px auto;
}
.scroll-content{
float:left;
}
.scroll-content-item{
width:100px;
height:100px;
float:left;
margin:10px;
font-size:3em;
line-height:96px;
text-align:center;
}
.scroll-bar-wrap{
clear:left;
padding:0 4px 0 2px;
margin:0 -1px -1px -1px;
}
.scroll-bar-wrap .ui-slider{
background:none;
border:0;
height:2em;
margin:0 auto;
}
.scroll-bar-wrap .ui-handle-helper-parent{
position:relative;
width:100%;
height:100%;
margin:0 auto;
}
.scroll-bar-wrap .ui-slider-handle{
top:.2em;
height:1.5em;
}
.scroll-bar-wrap .ui-slider-handle .ui-icon{
margin:-8px auto 0;
position:relative;
top:50%;
}
</style>
<script>
$(function() { //генератор случайного количества блоков
$.each(new Array(Math.round(Math.random() * 90 + 10)), function(indx, element) {
$("<div/>", {
"class": "scroll-content-item ui-widget-header",
"text": indx
}).appendTo(".scroll-content")
});
var scrollPane = $(".scroll-pane"),
scrollContent = $(".scroll-content"),
items = $(".scroll-content-item");
width = 0;
items.each(function(indx, element) {
width += $(this).outerWidth(true)
});
scrollContent.width(width);
var scrollbar = $(".scroll-bar").slider({
slide: function(event, ui) {
if (scrollContent.width() > scrollPane.width()) scrollContent.css("margin-left", Math.round(ui.value / 100 * (scrollPane.width() - scrollContent.width())) + "px");
else scrollContent.css("margin-left", 0)
},
change: function(event, ui) {
if (scrollContent.width() > scrollPane.width()) scrollContent.css("margin-left", Math.round(ui.value / 100 * (scrollPane.width() - scrollContent.width())) + "px");
else scrollContent.css("margin-left", 0)
}
});
var handleHelper = scrollbar.find(".ui-slider-handle").mousedown(function() {
scrollbar.width(handleHelper.width())
}).mouseup(function() {
scrollbar.width("100%")
}).append("<span class='ui-icon ui-icon-grip-dotted-vertical'></span>").wrap("<div class='ui-handle-helper-parent'></div>").parent();
scrollPane.css("overflow", "hidden");
function sizeScrollbar() {
var remainder = scrollContent.width() - scrollPane.width();
var proportion = remainder / scrollContent.width();
var handleSize = scrollPane.width() - proportion * scrollPane.width();
scrollbar.find(".ui-slider-handle").css({
width: handleSize,
"margin-left": -handleSize / 2
});
handleHelper.width("").width(scrollbar.width() - handleSize)
}
function resetValue() {
var remainder = scrollPane.width() - scrollContent.width();
var leftVal = scrollContent.css("margin-left") === "auto" ? 0 : parseInt(scrollContent.css("margin-left"));
var percentage = Math.round(leftVal / remainder * 100);
scrollbar.slider("value", percentage)
}
function reflowContent() {
var showing = scrollContent.width() + parseInt(scrollContent.css("margin-left"), 10);
var gap = scrollPane.width() - showing;
if (gap > 0) scrollContent.css("margin-left", parseInt(scrollContent.css("margin-left"), 10) + gap)
}
$(window).resize(function() {
resetValue();
sizeScrollbar();
reflowContent()
});
$("#my_elem").mousewheel(function(event) {
console.log(event.deltaX, event.deltaY, event.deltaFactor)
});
setTimeout(sizeScrollbar, 10);
$(".scroll-pane").mousewheel(function(event) {
event.preventDefault();
var value = scrollbar.slider("option", "value");
value += event.deltaY;
value > 100 && (value = 100);
value < 0 && (value = 0);
scrollbar.slider("option", "value", value)
})
});
</script>
</head>
<body>
<div class="scroll-pane ui-widget ui-widget-header ui-corner-all">
<div class="scroll-content"></div>
<div class="scroll-bar-wrap ui-widget-content ui-corner-bottom">
<div class="scroll-bar"></div>
</div>
</div>
</body>
</html>
