7 lines
9.9 KiB
JavaScript
7 lines
9.9 KiB
JavaScript
/**!
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* lg-zoom.js | 1.2.0 | May 20th 2020
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* http://sachinchoolur.github.io/lg-zoom.js
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* Copyright (c) 2016 Sachin N;
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* @license GPLv3
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*/
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!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var t;t="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,t.LgZoom=e()}}(function(){var e,t,o;return function(){function e(t,o,r){function l(a,s){if(!o[a]){if(!t[a]){var n="function"==typeof require&&require;if(!s&&n)return n(a,!0);if(i)return i(a,!0);var u=new Error("Cannot find module '"+a+"'");throw u.code="MODULE_NOT_FOUND",u}var c=o[a]={exports:{}};t[a][0].call(c.exports,function(e){return l(t[a][1][e]||e)},c,c.exports,e,t,o,r)}return o[a].exports}for(var i="function"==typeof require&&require,a=0;a<r.length;a++)l(r[a]);return l}return e}()({1:[function(t,o,r){!function(t,o){if("function"==typeof e&&e.amd)e([],o);else if(void 0!==r)o();else{var l={exports:{}};o(),t.lgZoom=l.exports}}(this,function(){"use strict";var e=Object.assign||function(e){for(var t=1;t<arguments.length;t++){var o=arguments[t];for(var r in o)Object.prototype.hasOwnProperty.call(o,r)&&(e[r]=o[r])}return e},t=function e(){var t=!1,o=navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);return o&&parseInt(o[2],10)<54&&(t=!0),t},o={scale:1,zoom:!0,actualSize:!0,enableZoomAfter:300,useLeftForZoom:t()},r=function t(r){return this.el=r,this.core=window.lgData[this.el.getAttribute("lg-uid")],this.core.s=e({},o,this.core.s),this.core.s.zoom&&this.core.doCss()&&(this.init(),this.zoomabletimeout=!1,this.pageX=window.innerWidth/2,this.pageY=window.innerHeight/2+(document.documentElement.scrollTop||document.body.scrollTop)),this};r.prototype.init=function(){var e=this,t='<button aria-label="Zoom in" id="lg-zoom-in" class="lg-icon"></button><button aria-label="Zoom out" id="lg-zoom-out" class="lg-icon"></button>';e.core.s.actualSize&&(t+='<button aria-label="Actual size" id="lg-actual-size" class="lg-icon"></button>'),e.core.s.useLeftForZoom?utils.addClass(e.core.outer,"lg-use-left-for-zoom"):utils.addClass(e.core.outer,"lg-use-transition-for-zoom"),this.core.outer.querySelector(".lg-toolbar").insertAdjacentHTML("beforeend",t),utils.on(e.core.el,"onSlideItemLoad.lgtmzoom",function(t){var o=e.core.s.enableZoomAfter+t.detail.delay;utils.hasClass(document.body,"lg-from-hash")&&t.detail.delay?o=0:utils.removeClass(document.body,"lg-from-hash"),e.zoomabletimeout=setTimeout(function(){utils.addClass(e.core.___slide[t.detail.index],"lg-zoomable")},o+30)});var o=1,r=function t(o){var r=e.core.outer.querySelector(".lg-current .lg-image"),l,i,a=(window.innerWidth-r.clientWidth)/2,s=(window.innerHeight-r.clientHeight)/2+(document.documentElement.scrollTop||document.body.scrollTop);l=e.pageX-a,i=e.pageY-s;var n=(o-1)*l,u=(o-1)*i;utils.setVendor(r,"Transform","scale3d("+o+", "+o+", 1)"),r.setAttribute("data-scale",o),e.core.s.useLeftForZoom?(r.parentElement.style.left=-n+"px",r.parentElement.style.top=-u+"px"):utils.setVendor(r.parentElement,"Transform","translate3d(-"+n+"px, -"+u+"px, 0)"),r.parentElement.setAttribute("data-x",n),r.parentElement.setAttribute("data-y",u)},l=function t(){o>1?utils.addClass(e.core.outer,"lg-zoomed"):e.resetZoom(),o<1&&(o=1),r(o)},i=function t(r,i,a,s){var n=i.clientWidth,u;u=e.core.s.dynamic?e.core.s.dynamicEl[a].width||i.naturalWidth||n:e.core.items[a].getAttribute("data-width")||i.naturalWidth||n;var c;utils.hasClass(e.core.outer,"lg-zoomed")?o=1:u>n&&(c=u/n,o=c||2),s?(e.pageX=window.innerWidth/2,e.pageY=window.innerHeight/2+(document.documentElement.scrollTop||document.body.scrollTop)):(e.pageX=r.pageX||r.targetTouches[0].pageX,e.pageY=r.pageY||r.targetTouches[0].pageY),l(),setTimeout(function(){utils.removeClass(e.core.outer,"lg-grabbing"),utils.addClass(e.core.outer,"lg-grab")},10)},a=!1;utils.on(e.core.el,"onAferAppendSlide.lgtmzoom",function(t){var o=t.detail.index,r=e.core.___slide[o].querySelector(".lg-image");e.core.isTouch||utils.on(r,"dblclick",function(e){i(e,r,o)}),e.core.isTouch&&utils.on(r,"touchstart",function(e){a?(clearTimeout(a),a=null,i(e,r,o)):a=setTimeout(function(){a=null},300),e.preventDefault()})}),utils.on(window,"resize.lgzoom scroll.lgzoom orientationchange.lgzoom",function(){e.pageX=window.innerWidth/2,e.pageY=window.innerHeight/2+(document.documentElement.scrollTop||document.body.scrollTop),r(o)}),utils.on(document.getElementById("lg-zoom-out"),"click.lg",function(){e.core.outer.querySelector(".lg-current .lg-image")&&(o-=e.core.s.scale,l())}),utils.on(document.getElementById("lg-zoom-in"),"click.lg",function(){e.core.outer.querySelector(".lg-current .lg-image")&&(o+=e.core.s.scale,l())}),utils.on(document.getElementById("lg-actual-size"),"click.lg",function(t){i(t,e.core.___slide[e.core.index].querySelector(".lg-image"),e.core.index,!0)}),utils.on(e.core.el,"onBeforeSlide.lgtm",function(){o=1,e.resetZoom()}),e.core.isTouch||e.zoomDrag(),e.core.isTouch&&e.zoomSwipe()},r.prototype.resetZoom=function(){utils.removeClass(this.core.outer,"lg-zoomed");for(var e=0;e<this.core.___slide.length;e++)this.core.___slide[e].querySelector(".lg-img-wrap")&&(this.core.___slide[e].querySelector(".lg-img-wrap").removeAttribute("style"),this.core.___slide[e].querySelector(".lg-img-wrap").removeAttribute("data-x"),this.core.___slide[e].querySelector(".lg-img-wrap").removeAttribute("data-y"));for(var t=0;t<this.core.___slide.length;t++)this.core.___slide[t].querySelector(".lg-image")&&(this.core.___slide[t].querySelector(".lg-image").removeAttribute("style"),this.core.___slide[t].querySelector(".lg-image").removeAttribute("data-scale"));this.pageX=window.innerWidth/2,this.pageY=window.innerHeight/2+(document.documentElement.scrollTop||document.body.scrollTop)},r.prototype.zoomSwipe=function(){for(var e=this,t={},o={},r=!1,l=!1,i=!1,a=0;a<e.core.___slide.length;a++)utils.on(e.core.___slide[a],"touchstart.lg",function(o){if(utils.hasClass(e.core.outer,"lg-zoomed")){var r=e.core.___slide[e.core.index].querySelector(".lg-object");i=r.offsetHeight*r.getAttribute("data-scale")>e.core.outer.querySelector(".lg").clientHeight,l=r.offsetWidth*r.getAttribute("data-scale")>e.core.outer.querySelector(".lg").clientWidth,(l||i)&&(o.preventDefault(),t={x:o.targetTouches[0].pageX,y:o.targetTouches[0].pageY})}});for(var s=0;s<e.core.___slide.length;s++)utils.on(e.core.___slide[s],"touchmove.lg",function(a){if(utils.hasClass(e.core.outer,"lg-zoomed")){var s=e.core.___slide[e.core.index].querySelector(".lg-img-wrap"),n,u;a.preventDefault(),r=!0,o={x:a.targetTouches[0].pageX,y:a.targetTouches[0].pageY},utils.addClass(e.core.outer,"lg-zoom-dragging"),u=i?-Math.abs(s.getAttribute("data-y"))+(o.y-t.y):-Math.abs(s.getAttribute("data-y")),n=l?-Math.abs(s.getAttribute("data-x"))+(o.x-t.x):-Math.abs(s.getAttribute("data-x")),(Math.abs(o.x-t.x)>15||Math.abs(o.y-t.y)>15)&&(e.core.s.useLeftForZoom?(s.style.left=n+"px",s.style.top=u+"px"):utils.setVendor(s,"Transform","translate3d("+n+"px, "+u+"px, 0)"))}});for(var n=0;n<e.core.___slide.length;n++)utils.on(e.core.___slide[n],"touchend.lg",function(){utils.hasClass(e.core.outer,"lg-zoomed")&&r&&(r=!1,utils.removeClass(e.core.outer,"lg-zoom-dragging"),e.touchendZoom(t,o,l,i))})},r.prototype.zoomDrag=function(){for(var e=this,t={},o={},r=!1,l=!1,i=!1,a=!1,s=0;s<e.core.___slide.length;s++)utils.on(e.core.___slide[s],"mousedown.lgzoom",function(o){var l=e.core.___slide[e.core.index].querySelector(".lg-object");a=l.offsetHeight*l.getAttribute("data-scale")>e.core.outer.querySelector(".lg").clientHeight,i=l.offsetWidth*l.getAttribute("data-scale")>e.core.outer.querySelector(".lg").clientWidth,utils.hasClass(e.core.outer,"lg-zoomed")&&utils.hasClass(o.target,"lg-object")&&(i||a)&&(o.preventDefault(),t={x:o.pageX,y:o.pageY},r=!0,e.core.outer.scrollLeft+=1,e.core.outer.scrollLeft-=1,utils.removeClass(e.core.outer,"lg-grab"),utils.addClass(e.core.outer,"lg-grabbing"))});utils.on(window,"mousemove.lgzoom",function(s){if(r){var n=e.core.___slide[e.core.index].querySelector(".lg-img-wrap"),u,c;l=!0,o={x:s.pageX,y:s.pageY},utils.addClass(e.core.outer,"lg-zoom-dragging"),c=a?-Math.abs(n.getAttribute("data-y"))+(o.y-t.y):-Math.abs(n.getAttribute("data-y")),u=i?-Math.abs(n.getAttribute("data-x"))+(o.x-t.x):-Math.abs(n.getAttribute("data-x")),e.core.s.useLeftForZoom?(n.style.left=u+"px",n.style.top=c+"px"):utils.setVendor(n,"Transform","translate3d("+u+"px, "+c+"px, 0)")}}),utils.on(window,"mouseup.lgzoom",function(s){r&&(r=!1,utils.removeClass(e.core.outer,"lg-zoom-dragging"),!l||t.x===o.x&&t.y===o.y||(o={x:s.pageX,y:s.pageY},e.touchendZoom(t,o,i,a)),l=!1),utils.removeClass(e.core.outer,"lg-grabbing"),utils.addClass(e.core.outer,"lg-grab")})},r.prototype.touchendZoom=function(e,t,o,r){var l=this,i=l.core.___slide[l.core.index].querySelector(".lg-img-wrap"),a=l.core.___slide[l.core.index].querySelector(".lg-object"),s=-Math.abs(i.getAttribute("data-x"))+(t.x-e.x),n=-Math.abs(i.getAttribute("data-y"))+(t.y-e.y),u=(l.core.outer.querySelector(".lg").clientHeight-a.offsetHeight)/2,c=Math.abs(a.offsetHeight*Math.abs(a.getAttribute("data-scale"))-l.core.outer.querySelector(".lg").clientHeight+u),d=(l.core.outer.querySelector(".lg").clientWidth-a.offsetWidth)/2,g=Math.abs(a.offsetWidth*Math.abs(a.getAttribute("data-scale"))-l.core.outer.querySelector(".lg").clientWidth+d);(Math.abs(t.x-e.x)>15||Math.abs(t.y-e.y)>15)&&(r&&(n<=-c?n=-c:n>=-u&&(n=-u)),o&&(s<=-g?s=-g:s>=-d&&(s=-d)),r?i.setAttribute("data-y",Math.abs(n)):n=-Math.abs(i.getAttribute("data-y")),o?i.setAttribute("data-x",Math.abs(s)):s=-Math.abs(i.getAttribute("data-x")),l.core.s.useLeftForZoom?(i.style.left=s+"px",i.style.top=n+"px"):utils.setVendor(i,"Transform","translate3d("+s+"px, "+n+"px, 0)"))},r.prototype.destroy=function(){var e=this;utils.off(e.core.el,".lgzoom"),utils.off(window,".lgzoom");for(var t=0;t<e.core.___slide.length;t++)utils.off(e.core.___slide[t],".lgzoom");utils.off(e.core.el,".lgtmzoom"),e.resetZoom(),clearTimeout(e.zoomabletimeout),e.zoomabletimeout=!1},window.lgModules.zoom=r})},{}]},{},[1])(1)}); |