imagelightbox.min.js

/*
	By Osvaldas Valutis, www.osvaldas.info
	Available for use under the MIT License
*/

!function(n,t,e,i){"use strict";var o=function(){var n=e.body||e.documentElement,n=n.style;return""==n.WebkitTransition?"-webkit-":""==n.MozTransition?"-moz-":""==n.OTransition?"-o-":""==n.transition?"":!1},r=o()===!1?!1:!0,a=function(n,t,e){var i={},r=o();i[r+"transform"]="translateX("+t+")",i[r+"transition"]=r+"transform "+e+"s linear",n.css(i)},u="ontouchstart"in t,d=t.navigator.pointerEnabled||t.navigator.msPointerEnabled,c=function(n){if(u)return!0;if(!d||"undefined"==typeof n||"undefined"==typeof n.pointerType)return!1;if("undefined"!=typeof n.MSPOINTER_TYPE_MOUSE){if(n.MSPOINTER_TYPE_MOUSE!=n.pointerType)return!0}else if("mouse"!=n.pointerType)return!0;return!1};n.fn.imageLightbox=function(i){var i=n.extend({selector:'id="imagelightbox"',animationSpeed:250,preloadNext:!0,enableKeyboard:!0,quitOnEnd:!1,quitOnImgClick:!1,quitOnDocClick:!0,onStart:!1,onEnd:!1,onLoadStart:!1,onLoadEnd:!1},i),o=n([]),f=n(),l=n(),p=0,g=0,s=0,h=!1,m=function(){if(!l.length)return!0;var e=.8*n(t).width(),i=.9*n(t).height(),o=new Image;o.src=l.attr("src"),o.onload=function(){if(p=o.width,g=o.height,p>e||g>i){var r=p/g>e/i?p/e:g/i;p/=r,g/=r}l.css({width:p+"px",height:g+"px",top:(n(t).height()-g)/2+"px",left:(n(t).width()-p)/2+"px"})}},v=function(t){if(h)return!1;if(t="undefined"==typeof t?!1:"left"==t?1:-1,l.length){if(t!==!1&&(o.length<2||i.quitOnEnd===!0&&(-1===t&&0==o.index(f)||1===t&&o.index(f)==o.length-1)))return E(),!1;var e={opacity:0};r?a(l,100*t-s+"px",i.animationSpeed/1e3):e.left=parseInt(l.css("left"))+100*t+"px",l.animate(e,i.animationSpeed,function(){x()}),s=0}h=!0,i.onLoadStart!==!1&&i.onLoadStart(),setTimeout(function(){l=n("<img "+i.selector+" />").attr("src",f.attr("href")).on("load",function(){l.appendTo("body"),m();var e={opacity:1};if(l.css("opacity",0),r)a(l,-100*t+"px",0),setTimeout(function(){a(l,"0px",i.animationSpeed/1e3)},50);else{var u=parseInt(l.css("left"));e.left=u+"px",l.css("left",u-100*t+"px")}if(l.animate(e,i.animationSpeed,function(){h=!1,i.onLoadEnd!==!1&&i.onLoadEnd()}),i.preloadNext){var d=o.eq(o.index(f)+1);d.length||(d=o.eq(0)),n("<img />").attr("src",d.attr("href"))}}).on("error",function(){i.onLoadEnd!==!1&&i.onLoadEnd()});var e=0,u=0,g=0;l.on(d?"pointerup MSPointerUp":"click",function(n){if(n.preventDefault(),i.quitOnImgClick)return E(),!1;if(c(n.originalEvent))return!0;var t=(n.pageX||n.originalEvent.pageX)-n.target.offsetLeft;f=o.eq(o.index(f)-(p/2>t?1:-1)),f.length||(f=o.eq(p/2>t?o.length:0)),v(p/2>t?"left":"right")}).on("touchstart pointerdown MSPointerDown",function(n){return!c(n.originalEvent)||i.quitOnImgClick?!0:(r&&(g=parseInt(l.css("left"))),void(e=n.originalEvent.pageX||n.originalEvent.touches[0].pageX))}).on("touchmove pointermove MSPointerMove",function(n){return!c(n.originalEvent)||i.quitOnImgClick?!0:(n.preventDefault(),u=n.originalEvent.pageX||n.originalEvent.touches[0].pageX,s=e-u,void(r?a(l,-s+"px",0):l.css("left",g-s+"px")))}).on("touchend touchcancel pointerup pointercancel MSPointerUp MSPointerCancel",function(n){return!c(n.originalEvent)||i.quitOnImgClick?!0:void(Math.abs(s)>50?(f=o.eq(o.index(f)-(0>s?1:-1)),f.length||(f=o.eq(0>s?o.length:0)),v(s>0?"right":"left")):r?a(l,"0px",i.animationSpeed/1e3):l.animate({left:g+"px"},i.animationSpeed/2))})},i.animationSpeed+100)},x=function(){return l.length?(l.remove(),void(l=n())):!1},E=function(){return l.length?void l.animate({opacity:0},i.animationSpeed,function(){x(),h=!1,i.onEnd!==!1&&i.onEnd()}):!1},y=function(t){t.each(function(){o=o.add(n(this))}),t.on("click.imageLightbox",function(t){return t.preventDefault(),h?!1:(h=!1,i.onStart!==!1&&i.onStart(),f=n(this),void v())})};return n(t).on("resize",m),i.quitOnDocClick&&n(e).on(u?"touchend":"click",function(t){l.length&&!n(t.target).is(l)&&E()}),i.enableKeyboard&&n(e).on("keyup",function(n){return l.length?(n.preventDefault(),27==n.keyCode&&E(),void((37==n.keyCode||39==n.keyCode)&&(f=o.eq(o.index(f)-(37==n.keyCode?1:-1)),f.length||(f=o.eq(37==n.keyCode?o.length:0)),v(37==n.keyCode?"left":"right")))):!0}),y(n(this)),this.switchImageLightbox=function(n){var t=o.eq(n);if(t.length){var e=o.index(f);f=t,v(e>n?"left":"right")}return this},this.addToImageLightbox=function(n){y(n)},this.quitImageLightbox=function(){return E(),this},this}}(jQuery,window,document);