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12 lines
29 KiB
JavaScript
12 lines
29 KiB
JavaScript
/*!
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Holder - client side image placeholders
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Version 2.8.2+c34r9
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© 2015 Ivan Malopinsky - http://imsky.co
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Site: http://holderjs.com
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Issues: https://github.com/imsky/holder/issues
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License: MIT
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*/
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!function(e){if(e.document){var t=e.document;t.querySelectorAll||(t.querySelectorAll=function(n){var r,i=t.createElement("style"),o=[];for(t.documentElement.firstChild.appendChild(i),t._qsa=[],i.styleSheet.cssText=n+"{x-qsa:expression(document._qsa && document._qsa.push(this))}",e.scrollBy(0,0),i.parentNode.removeChild(i);t._qsa.length;)r=t._qsa.shift(),r.style.removeAttribute("x-qsa"),o.push(r);return t._qsa=null,o}),t.querySelector||(t.querySelector=function(e){var n=t.querySelectorAll(e);return n.length?n[0]:null}),t.getElementsByClassName||(t.getElementsByClassName=function(e){return e=String(e).replace(/^|\s+/g,"."),t.querySelectorAll(e)}),Object.keys||(Object.keys=function(e){if(e!==Object(e))throw TypeError("Object.keys called on non-object");var t,n=[];for(t in e)Object.prototype.hasOwnProperty.call(e,t)&&n.push(t);return n}),Array.prototype.forEach||(Array.prototype.forEach=function(e){if(void 0===this||null===this)throw TypeError();var t=Object(this),n=t.length>>>0;if("function"!=typeof e)throw TypeError();var r,i=arguments[1];for(r=0;n>r;r++)r in t&&e.call(i,t[r],r,t)}),function(e){var t="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";e.atob=e.atob||function(e){e=String(e);var n,r=0,i=[],o=0,a=0;if(e=e.replace(/\s/g,""),e.length%4===0&&(e=e.replace(/=+$/,"")),e.length%4===1)throw Error("InvalidCharacterError");if(/[^+/0-9A-Za-z]/.test(e))throw Error("InvalidCharacterError");for(;r<e.length;)n=t.indexOf(e.charAt(r)),o=o<<6|n,a+=6,24===a&&(i.push(String.fromCharCode(o>>16&255)),i.push(String.fromCharCode(o>>8&255)),i.push(String.fromCharCode(255&o)),a=0,o=0),r+=1;return 12===a?(o>>=4,i.push(String.fromCharCode(255&o))):18===a&&(o>>=2,i.push(String.fromCharCode(o>>8&255)),i.push(String.fromCharCode(255&o))),i.join("")},e.btoa=e.btoa||function(e){e=String(e);var n,r,i,o,a,s,l,d=0,h=[];if(/[^\x00-\xFF]/.test(e))throw Error("InvalidCharacterError");for(;d<e.length;)n=e.charCodeAt(d++),r=e.charCodeAt(d++),i=e.charCodeAt(d++),o=n>>2,a=(3&n)<<4|r>>4,s=(15&r)<<2|i>>6,l=63&i,d===e.length+2?(s=64,l=64):d===e.length+1&&(l=64),h.push(t.charAt(o),t.charAt(a),t.charAt(s),t.charAt(l));return h.join("")}}(e),Object.prototype.hasOwnProperty||(Object.prototype.hasOwnProperty=function(e){var t=this.__proto__||this.constructor.prototype;return e in this&&(!(e in t)||t[e]!==this[e])}),function(){if("performance"in e==!1&&(e.performance={}),Date.now=Date.now||function(){return(new Date).getTime()},"now"in e.performance==!1){var t=Date.now();performance.timing&&performance.timing.navigationStart&&(t=performance.timing.navigationStart),e.performance.now=function(){return Date.now()-t}}}(),e.requestAnimationFrame||(e.webkitRequestAnimationFrame?!function(e){e.requestAnimationFrame=function(t){return webkitRequestAnimationFrame(function(){t(e.performance.now())})},e.cancelAnimationFrame=webkitCancelAnimationFrame}(e):e.mozRequestAnimationFrame?!function(e){e.requestAnimationFrame=function(t){return mozRequestAnimationFrame(function(){t(e.performance.now())})},e.cancelAnimationFrame=mozCancelAnimationFrame}(e):!function(e){e.requestAnimationFrame=function(t){return e.setTimeout(t,1e3/60)},e.cancelAnimationFrame=e.clearTimeout}(e))}}(this),function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):"object"==typeof exports?exports.Holder=t():e.Holder=t()}(this,function(){return function(e){function t(r){if(n[r])return n[r].exports;var i=n[r]={exports:{},id:r,loaded:!1};return e[r].call(i.exports,i,i.exports,t),i.loaded=!0,i.exports}var n={};return t.m=e,t.c=n,t.p="",t(0)}([function(e,t,n){e.exports=n(1)},function(e,t,n){(function(t){function r(e,t,n,r){var a=i(n.substr(n.lastIndexOf(e.domain)),e);a&&o({mode:null,el:r,flags:a,engineSettings:t})}function i(e,t){var n={theme:k(M.settings.themes.gray,null),stylesheets:t.stylesheets,instanceOptions:t},r=e.split("?"),i=r[0].split("/");n.holderURL=e;var o=i[1],a=o.match(/([\d]+p?)x([\d]+p?)/);if(!a)return!1;if(n.fluid=-1!==o.indexOf("p"),n.dimensions={width:a[1].replace("p","%"),height:a[2].replace("p","%")},2===r.length){var s=v.parse(r[1]);if(s.bg&&(n.theme.background=w.parseColor(s.bg)),s.fg&&(n.theme.foreground=w.parseColor(s.fg)),s.bg&&!s.fg&&(n.autoFg=!0),s.theme&&n.instanceOptions.themes.hasOwnProperty(s.theme)&&(n.theme=k(n.instanceOptions.themes[s.theme],null)),s.text&&(n.text=s.text),s.textmode&&(n.textmode=s.textmode),s.size&&(n.size=s.size),s.font&&(n.font=s.font),s.align&&(n.align=s.align),n.nowrap=w.truthy(s.nowrap),n.auto=w.truthy(s.auto),n.outline=w.truthy(s.outline),w.truthy(s.random)){M.vars.cache.themeKeys=M.vars.cache.themeKeys||Object.keys(n.instanceOptions.themes);var l=M.vars.cache.themeKeys[0|Math.random()*M.vars.cache.themeKeys.length];n.theme=k(n.instanceOptions.themes[l],null)}}return n}function o(e){var t=e.mode,n=e.el,r=e.flags,i=e.engineSettings,o=r.dimensions,s=r.theme,l=o.width+"x"+o.height;if(t=null==t?r.fluid?"fluid":"image":t,null!=r.text&&(s.text=r.text,"object"===n.nodeName.toLowerCase())){for(var u=s.text.split("\\n"),c=0;c<u.length;c++)u[c]=w.encodeHtmlEntity(u[c]);s.text=u.join("\\n")}var f=r.holderURL,p=k(i,null);if(r.font&&(s.font=r.font,!p.noFontFallback&&"img"===n.nodeName.toLowerCase()&&M.setup.supportsCanvas&&"svg"===p.renderer&&(p=k(p,{renderer:"canvas"}))),r.font&&"canvas"==p.renderer&&(p.reRender=!0),"background"==t)null==n.getAttribute("data-background-src")&&x.setAttr(n,{"data-background-src":f});else{var g={};g[M.vars.dataAttr]=f,x.setAttr(n,g)}r.theme=s,n.holderData={flags:r,engineSettings:p},("image"==t||"fluid"==t)&&x.setAttr(n,{alt:s.text?s.text+" ["+l+"]":l});var m={mode:t,el:n,holderSettings:{dimensions:o,theme:s,flags:r},engineSettings:p};"image"==t?(r.auto||(n.style.width=o.width+"px",n.style.height=o.height+"px"),"html"==p.renderer?n.style.backgroundColor=s.background:(a(m),"exact"==r.textmode&&(n.holderData.resizeUpdate=!0,M.vars.resizableImages.push(n),d(n)))):"background"==t&&"html"!=p.renderer?a(m):"fluid"==t&&(n.holderData.resizeUpdate=!0,"%"==o.height.slice(-1)?n.style.height=o.height:null!=r.auto&&r.auto||(n.style.height=o.height+"px"),"%"==o.width.slice(-1)?n.style.width=o.width:null!=r.auto&&r.auto||(n.style.width=o.width+"px"),("inline"==n.style.display||""===n.style.display||"none"==n.style.display)&&(n.style.display="block"),h(n),"html"==p.renderer?n.style.backgroundColor=s.background:(M.vars.resizableImages.push(n),d(n)))}function a(e){function n(){var t=null;switch(l.renderer){case"canvas":t=z(h,e);break;case"svg":t=C(h,e);break;default:throw"Holder: invalid renderer: "+l.renderer}return t}var r=null,i=e.mode,o=e.el,a=e.holderSettings,l=e.engineSettings;switch(l.renderer){case"svg":if(!M.setup.supportsSVG)return;break;case"canvas":if(!M.setup.supportsCanvas)return;break;default:return}var d={width:a.dimensions.width,height:a.dimensions.height,theme:a.theme,flags:a.flags},h=s(d);if(r=n(),null==r)throw"Holder: couldn't render placeholder";"background"==i?(o.style.backgroundImage="url("+r+")",o.style.backgroundSize=d.width+"px "+d.height+"px"):("img"===o.nodeName.toLowerCase()?x.setAttr(o,{src:r}):"object"===o.nodeName.toLowerCase()&&(x.setAttr(o,{data:r}),x.setAttr(o,{type:"image/svg+xml"})),l.reRender&&t.setTimeout(function(){var e=n();if(null==e)throw"Holder: couldn't render placeholder";"img"===o.nodeName.toLowerCase()?x.setAttr(o,{src:e}):"object"===o.nodeName.toLowerCase()&&(x.setAttr(o,{data:e}),x.setAttr(o,{type:"image/svg+xml"}))},150)),x.setAttr(o,{"data-holder-rendered":!0})}function s(e){function t(e,t,n,r){t.width=n,t.height=r,e.width=Math.max(e.width,t.width),e.height+=t.height}var n=M.defaults.size;switch(parseFloat(e.theme.size)?n=e.theme.size:parseFloat(e.flags.size)&&(n=e.flags.size),e.font={family:e.theme.font?e.theme.font:"Arial, Helvetica, Open Sans, sans-serif",size:l(e.width,e.height,n,M.defaults.scale),units:e.theme.units?e.theme.units:M.defaults.units,weight:e.theme.fontweight?e.theme.fontweight:"bold"},e.text=e.theme.text||Math.floor(e.width)+"x"+Math.floor(e.height),e.noWrap=e.theme.nowrap||e.flags.nowrap,e.align=e.theme.align||e.flags.align||"center",e.flags.textmode){case"literal":e.text=e.flags.dimensions.width+"x"+e.flags.dimensions.height;break;case"exact":if(!e.flags.exactDimensions)break;e.text=Math.floor(e.flags.exactDimensions.width)+"x"+Math.floor(e.flags.exactDimensions.height)}var r=new y({width:e.width,height:e.height}),i=r.Shape,o=new i.Rect("holderBg",{fill:e.theme.background});if(o.resize(e.width,e.height),r.root.add(o),e.flags.outline){var a=new S(o.properties.fill);a=a.lighten(a.lighterThan("7f7f7f")?-.1:.1),o.properties.outline={fill:a.toHex(!0),width:2}}var s=e.theme.foreground;if(e.flags.autoFg){var d=new S(o.properties.fill),h=new S("fff"),u=new S("000",{alpha:.285714});s=d.blendAlpha(d.lighterThan("7f7f7f")?u:h).toHex(!0)}var c=new i.Group("holderTextGroup",{text:e.text,align:e.align,font:e.font,fill:s});c.moveTo(null,null,1),r.root.add(c);var f=c.textPositionData=j(r);if(!f)throw"Holder: staging fallback not supported yet.";c.properties.leading=f.boundingBox.height;var p=null,g=null,m=e.width*M.vars.lineWrapRatio,v=m;if(f.lineCount>1){var w,b=0,x=0,A=0;g=new i.Group("line"+A),("left"===e.align||"right"===e.align)&&(v=e.width*(1-2*(1-M.vars.lineWrapRatio)));for(var C=0;C<f.words.length;C++){var k=f.words[C];p=new i.Text(k.text);var E="\\n"==k.text;!e.noWrap&&(b+k.width>=v||E===!0)&&(t(c,g,b,c.properties.leading),c.add(g),b=0,x+=c.properties.leading,A+=1,g=new i.Group("line"+A),g.y=x),E!==!0&&(p.moveTo(b,0),b+=f.spaceWidth+k.width,g.add(p))}if(t(c,g,b,c.properties.leading),c.add(g),"left"===e.align)c.moveTo(e.width-m,null,null);else if("right"===e.align){for(w in c.children)g=c.children[w],g.moveTo(e.width-g.width,null,null);c.moveTo(0-(e.width-m),null,null)}else{for(w in c.children)g=c.children[w],g.moveTo((c.width-g.width)/2,null,null);c.moveTo((e.width-c.width)/2,null,null)}c.moveTo(null,(e.height-c.height)/2,null),(e.height-c.height)/2<0&&c.moveTo(null,0,null)}else p=new i.Text(e.text),g=new i.Group("line0"),g.add(p),c.add(g),"left"===e.align?c.moveTo(e.width-m,null,null):"right"===e.align?c.moveTo(0-(e.width-m),null,null):c.moveTo((e.width-f.boundingBox.width)/2,null,null),c.moveTo(null,(e.height-f.boundingBox.height)/2,null);return r}function l(e,t,n,r){var i=parseInt(e,10),o=parseInt(t,10),a=Math.max(i,o),s=Math.min(i,o),l=.8*Math.min(s,a*r);return Math.round(Math.max(n,l))}function d(e){var t;t=null==e||null==e.nodeType?M.vars.resizableImages:[e];for(var n=0,r=t.length;r>n;n++){var i=t[n];if(i.holderData){var o=i.holderData.flags,s=E(i);if(s){if(!i.holderData.resizeUpdate)continue;if(o.fluid&&o.auto){var l=i.holderData.fluidConfig;switch(l.mode){case"width":s.height=s.width/l.ratio;break;case"height":s.width=s.height*l.ratio}}var d={mode:"image",holderSettings:{dimensions:s,theme:o.theme,flags:o},el:i,engineSettings:i.holderData.engineSettings};"exact"==o.textmode&&(o.exactDimensions=s,d.holderSettings.dimensions=o.dimensions),a(d)}else f(i)}}}function h(e){if(e.holderData){var t=E(e);if(t){var n=e.holderData.flags,r={fluidHeight:"%"==n.dimensions.height.slice(-1),fluidWidth:"%"==n.dimensions.width.slice(-1),mode:null,initialDimensions:t};r.fluidWidth&&!r.fluidHeight?(r.mode="width",r.ratio=r.initialDimensions.width/parseFloat(n.dimensions.height)):!r.fluidWidth&&r.fluidHeight&&(r.mode="height",r.ratio=parseFloat(n.dimensions.width)/r.initialDimensions.height),e.holderData.fluidConfig=r}else f(e)}}function u(){var e,n=[],r=Object.keys(M.vars.invisibleImages);r.forEach(function(t){e=M.vars.invisibleImages[t],E(e)&&"img"==e.nodeName.toLowerCase()&&(n.push(e),delete M.vars.invisibleImages[t])}),n.length&&F.run({images:n}),setTimeout(function(){t.requestAnimationFrame(u)},10)}function c(){M.vars.visibilityCheckStarted||(t.requestAnimationFrame(u),M.vars.visibilityCheckStarted=!0)}function f(e){e.holderData.invisibleId||(M.vars.invisibleId+=1,M.vars.invisibleImages["i"+M.vars.invisibleId]=e,e.holderData.invisibleId=M.vars.invisibleId)}function p(e){M.vars.debounceTimer||e.call(this),M.vars.debounceTimer&&t.clearTimeout(M.vars.debounceTimer),M.vars.debounceTimer=t.setTimeout(function(){M.vars.debounceTimer=null,e.call(this)},M.setup.debounce)}function g(){p(function(){d(null)})}var m=n(2),v=n(3),y=n(4),w=n(5),b=n(6),x=n(7),S=n(8),A=n(9),C=n(10),k=w.extend,E=w.dimensionCheck,T=A.svg_ns,F={version:A.version,addTheme:function(e,t){return null!=e&&null!=t&&(M.settings.themes[e]=t),delete M.vars.cache.themeKeys,this},addImage:function(e,t){var n=x.getNodeArray(t);return n.forEach(function(t){var n=x.newEl("img"),r={};r[M.setup.dataAttr]=e,x.setAttr(n,r),t.appendChild(n)}),this},setResizeUpdate:function(e,t){e.holderData&&(e.holderData.resizeUpdate=!!t,e.holderData.resizeUpdate&&d(e))},run:function(e){e=e||{};var n={},a=k(M.settings,e);M.vars.preempted=!0,M.vars.dataAttr=a.dataAttr||M.setup.dataAttr,M.vars.lineWrapRatio=a.lineWrapRatio||M.setup.lineWrapRatio,n.renderer=a.renderer?a.renderer:M.setup.renderer,-1===M.setup.renderers.join(",").indexOf(n.renderer)&&(n.renderer=M.setup.supportsSVG?"svg":M.setup.supportsCanvas?"canvas":"html");var s=x.getNodeArray(a.images),l=x.getNodeArray(a.bgnodes),d=x.getNodeArray(a.stylenodes),h=x.getNodeArray(a.objects);return n.stylesheets=[],n.svgXMLStylesheet=!0,n.noFontFallback=a.noFontFallback?a.noFontFallback:!1,d.forEach(function(e){if(e.attributes.rel&&e.attributes.href&&"stylesheet"==e.attributes.rel.value){var t=e.attributes.href.value,r=x.newEl("a");r.href=t;var i=r.protocol+"//"+r.host+r.pathname+r.search;n.stylesheets.push(i)}}),l.forEach(function(e){if(t.getComputedStyle){var r=t.getComputedStyle(e,null).getPropertyValue("background-image"),s=e.getAttribute("data-background-src"),l=s||r,d=null,h=a.domain+"/",u=l.indexOf(h);if(0===u)d=l;else if(1===u&&"?"===l[0])d=l.slice(1);else{var c=l.substr(u).match(/([^\"]*)"?\)/);if(null!==c)d=c[1];else if(0===l.indexOf("url("))throw"Holder: unable to parse background URL: "+l}if(null!=d){var f=i(d,a);f&&o({mode:"background",el:e,flags:f,engineSettings:n})}}}),h.forEach(function(e){var t={};try{t.data=e.getAttribute("data"),t.dataSrc=e.getAttribute(M.vars.dataAttr)}catch(i){}var o=null!=t.data&&0===t.data.indexOf(a.domain),s=null!=t.dataSrc&&0===t.dataSrc.indexOf(a.domain);o?r(a,n,t.data,e):s&&r(a,n,t.dataSrc,e)}),s.forEach(function(e){var t={};try{t.src=e.getAttribute("src"),t.dataSrc=e.getAttribute(M.vars.dataAttr),t.rendered=e.getAttribute("data-holder-rendered")}catch(i){}var o=null!=t.src,s=null!=t.dataSrc&&0===t.dataSrc.indexOf(a.domain),l=null!=t.rendered&&"true"==t.rendered;o?0===t.src.indexOf(a.domain)?r(a,n,t.src,e):s&&(l?r(a,n,t.dataSrc,e):!function(e,t,n,i,o){w.imageExists(e,function(e){e||r(t,n,i,o)})}(t.src,a,n,t.dataSrc,e)):s&&r(a,n,t.dataSrc,e)}),this}},M={settings:{domain:"holder.js",images:"img",objects:"object",bgnodes:"body .holderjs",stylenodes:"head link.holderjs",themes:{gray:{background:"#EEEEEE",foreground:"#AAAAAA"},social:{background:"#3a5a97",foreground:"#FFFFFF"},industrial:{background:"#434A52",foreground:"#C2F200"},sky:{background:"#0D8FDB",foreground:"#FFFFFF"},vine:{background:"#39DBAC",foreground:"#1E292C"},lava:{background:"#F8591A",foreground:"#1C2846"}}},defaults:{size:10,units:"pt",scale:1/16}},j=function(){var e=null,t=null,n=null;return function(r){var i=r.root;if(M.setup.supportsSVG){var o=!1,a=function(e){return document.createTextNode(e)};(null==e||e.parentNode!==document.body)&&(o=!0),e=b.initSVG(e,i.properties.width,i.properties.height),e.style.display="block",o&&(t=x.newEl("text",T),n=a(null),x.setAttr(t,{x:0}),t.appendChild(n),e.appendChild(t),document.body.appendChild(e),e.style.visibility="hidden",e.style.position="absolute",e.style.top="-100%",e.style.left="-100%");var s=i.children.holderTextGroup,l=s.properties;x.setAttr(t,{y:l.font.size,style:w.cssProps({"font-weight":l.font.weight,"font-size":l.font.size+l.font.units,"font-family":l.font.family})}),n.nodeValue=l.text;var d=t.getBBox(),h=Math.ceil(d.width/(i.properties.width*M.vars.lineWrapRatio)),u=l.text.split(" "),c=l.text.match(/\\n/g);h+=null==c?0:c.length,n.nodeValue=l.text.replace(/[ ]+/g,"");var f=t.getComputedTextLength(),p=d.width-f,g=Math.round(p/Math.max(1,u.length-1)),m=[];if(h>1){n.nodeValue="";for(var v=0;v<u.length;v++)if(0!==u[v].length){n.nodeValue=w.decodeHtmlEntity(u[v]);var 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