4 lines
5.3 KiB
JavaScript
4 lines
5.3 KiB
JavaScript
/*! perfect-scrollbar - v0.4.3
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* http://noraesae.github.com/perfect-scrollbar/
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* Copyright (c) 2013 HyeonJe Jun; Licensed MIT */
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(function(e){var t={wheelSpeed:10,wheelPropagation:!1,minScrollbarLength:null};e.fn.perfectScrollbar=function(o,r){return this.each(function(){var n=e.extend(!0,{},t);if("object"==typeof o?e.extend(!0,n,o):r=o,"update"===r)return e(this).data("perfect-scrollbar-update")&&e(this).data("perfect-scrollbar-update")(),e(this);if("destroy"===r)return e(this).data("perfect-scrollbar-destroy")&&e(this).data("perfect-scrollbar-destroy")(),e(this);if(e(this).data("perfect-scrollbar"))return e(this).data("perfect-scrollbar");var l,s,c,a,i,p,f,u,d=e(this).addClass("ps-container"),h=e("<div class='ps-scrollbar-x'></div>").appendTo(d),g=e("<div class='ps-scrollbar-y'></div>").appendTo(d),v=parseInt(h.css("bottom"),10),b=parseInt(g.css("right"),10),m=function(){var e=parseInt(u*(a-s)/(s-f),10);d.scrollTop(e),h.css({bottom:v-e})},w=function(){var e=parseInt(p*(c-l)/(l-i),10);d.scrollLeft(e),g.css({right:b-e})},T=function(e){return n.minScrollbarLength&&(e=Math.max(e,n.minScrollbarLength)),e},L=function(){h.css({left:p+d.scrollLeft(),bottom:v-d.scrollTop(),width:i}),g.css({top:u+d.scrollTop(),right:b-d.scrollLeft(),height:f})},C=function(){l=d.width(),s=d.height(),c=d.prop("scrollWidth"),a=d.prop("scrollHeight"),c>l?(i=T(parseInt(l*l/c,10)),p=parseInt(d.scrollLeft()*(l-i)/(c-l),10)):(i=0,p=0,d.scrollLeft(0)),a>s?(f=T(parseInt(s*s/a,10)),u=parseInt(d.scrollTop()*(s-f)/(a-s),10)):(f=0,u=0,d.scrollTop(0)),u>=s-f&&(u=s-f),p>=l-i&&(p=l-i),L()},I=function(e,t){var o=e+t,r=l-i;p=0>o?0:o>r?r:o,h.css({left:p+d.scrollLeft()})},D=function(e,t){var o=e+t,r=s-f;u=0>o?0:o>r?r:o,g.css({top:u+d.scrollTop()})},y=function(){var t,o;h.bind("mousedown.perfect-scroll",function(e){o=e.pageX,t=h.position().left,h.addClass("in-scrolling"),e.stopPropagation(),e.preventDefault()}),e(document).bind("mousemove.perfect-scroll",function(e){h.hasClass("in-scrolling")&&(w(),I(t,e.pageX-o),e.stopPropagation(),e.preventDefault())}),e(document).bind("mouseup.perfect-scroll",function(){h.hasClass("in-scrolling")&&h.removeClass("in-scrolling")})},P=function(){var t,o;g.bind("mousedown.perfect-scroll",function(e){o=e.pageY,t=g.position().top,g.addClass("in-scrolling"),e.stopPropagation(),e.preventDefault()}),e(document).bind("mousemove.perfect-scroll",function(e){g.hasClass("in-scrolling")&&(m(),D(t,e.pageY-o),e.stopPropagation(),e.preventDefault())}),e(document).bind("mouseup.perfect-scroll",function(){g.hasClass("in-scrolling")&&g.removeClass("in-scrolling")})},x=function(){var e=function(e,t){var o=d.scrollTop();if(0===o&&t>0&&0===e)return!n.wheelPropagation;if(o>=a-s&&0>t&&0===e)return!n.wheelPropagation;var r=d.scrollLeft();return 0===r&&0>e&&0===t?!n.wheelPropagation:r>=c-l&&e>0&&0===t?!n.wheelPropagation:!0};d.bind("mousewheel.perfect-scroll",function(t,o,r,l){d.scrollTop(d.scrollTop()-l*n.wheelSpeed),d.scrollLeft(d.scrollLeft()+r*n.wheelSpeed),C(),e(r,l)&&t.preventDefault()}),d.bind("DOMMouseScroll.perfect-scroll",function(e){e.preventDefault()}),d.bind("MozMousePixelScroll.perfect-scroll",function(e){e.preventDefault()})},S=function(){var t=function(e,t){d.scrollTop(d.scrollTop()-t),d.scrollLeft(d.scrollLeft()-e),C()},o={},r=0,n={},l=null,s=!1;e(window).bind("touchstart.perfect-scroll",function(){s=!0}),e(window).bind("touchend.perfect-scroll",function(){s=!1}),d.bind("touchstart.perfect-scroll",function(e){var t=e.originalEvent.targetTouches[0];o.pageX=t.pageX,o.pageY=t.pageY,r=(new Date).getTime(),null!==l&&clearInterval(l),e.stopPropagation()}),d.bind("touchmove.perfect-scroll",function(e){if(!s&&1===e.originalEvent.targetTouches.length){var l=e.originalEvent.targetTouches[0],c={};c.pageX=l.pageX,c.pageY=l.pageY;var a=c.pageX-o.pageX,i=c.pageY-o.pageY;t(a,i),o=c;var p=(new Date).getTime();n.x=a/(p-r),n.y=i/(p-r),r=p,e.preventDefault()}}),d.bind("touchend.perfect-scroll",function(){l=setInterval(function(){return.01>Math.abs(n.x)&&.01>Math.abs(n.y)?(clearInterval(l),void 0):(t(30*n.x,30*n.y),n.x*=.8,n.y*=.8,void 0)},10)})},X=function(){h.remove(),g.remove(),d.unbind(".perfect-scroll"),e(window).unbind(".perfect-scroll"),d.data("perfect-scrollbar",null),d.data("perfect-scrollbar-update",null),d.data("perfect-scrollbar-destroy",null)},Y=function(t){d.addClass("ie").addClass("ie"+t);var o=function(){var t=function(){e(this).addClass("hover")},o=function(){e(this).removeClass("hover")};d.bind("mouseenter.perfect-scroll",t).bind("mouseleave.perfect-scroll",o),h.bind("mouseenter.perfect-scroll",t).bind("mouseleave.perfect-scroll",o),g.bind("mouseenter.perfect-scroll",t).bind("mouseleave.perfect-scroll",o)},r=function(){L=function(){h.css({left:p+d.scrollLeft(),bottom:v,width:i}),g.css({top:u+d.scrollTop(),right:b,height:f}),h.hide().show(),g.hide().show()},m=function(){var e=parseInt(u*a/s,10);d.scrollTop(e),h.css({bottom:v}),h.hide().show()},w=function(){var e=parseInt(p*c/l,10);d.scrollLeft(e),g.hide().show()}};6===t&&(o(),r())},M="ontouchstart"in window||window.DocumentTouch&&document instanceof window.DocumentTouch,E=function(){var e=navigator.userAgent.toLowerCase().match(/(msie) ([\w.]+)/);e&&"msie"===e[1]&&Y(parseInt(e[2],10)),C(),y(),P(),M&&S(),d.mousewheel&&x(),d.data("perfect-scrollbar",d),d.data("perfect-scrollbar-update",C),d.data("perfect-scrollbar-destroy",X)};return E(),d})}})(jQuery); |