Owen Leonard
9cb286e36d
This patch upgrades the Font Face Observer library from v2.0.3 to the
latest release, v2.3.0. The file is moved to its own directory for
consistency's sake.
To test, apply the patch and clear your browser cache.
- Load any page in the OPAC.
- The custom font we supply for the OPAC (Noto Sans) should load
correctly.
- If you want to see more about the functionality of the library, use
your browser's developer tools to simulate a slow connection.
- The page should load with a default sans-serif font first, and then
the downloaded font will be applied.
Note: If you throttle your connection speed *too* much, the loading of
the custom font will time out and you'll only see the default
sans-serif font.
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
8 lines
4.4 KiB
JavaScript
8 lines
4.4 KiB
JavaScript
/* Font Face Observer v2.3.0 - © Bram Stein. License: BSD-3-Clause */(function(){function p(a,c){document.addEventListener?a.addEventListener("scroll",c,!1):a.attachEvent("scroll",c)}function u(a){document.body?a():document.addEventListener?document.addEventListener("DOMContentLoaded",function b(){document.removeEventListener("DOMContentLoaded",b);a()}):document.attachEvent("onreadystatechange",function g(){if("interactive"==document.readyState||"complete"==document.readyState)document.detachEvent("onreadystatechange",g),a()})};function w(a){this.g=document.createElement("div");this.g.setAttribute("aria-hidden","true");this.g.appendChild(document.createTextNode(a));this.h=document.createElement("span");this.i=document.createElement("span");this.m=document.createElement("span");this.j=document.createElement("span");this.l=-1;this.h.style.cssText="max-width:none;display:inline-block;position:absolute;height:100%;width:100%;overflow:scroll;font-size:16px;";this.i.style.cssText="max-width:none;display:inline-block;position:absolute;height:100%;width:100%;overflow:scroll;font-size:16px;";
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this.j.style.cssText="max-width:none;display:inline-block;position:absolute;height:100%;width:100%;overflow:scroll;font-size:16px;";this.m.style.cssText="display:inline-block;width:200%;height:200%;font-size:16px;max-width:none;";this.h.appendChild(this.m);this.i.appendChild(this.j);this.g.appendChild(this.h);this.g.appendChild(this.i)}
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function x(a,c){a.g.style.cssText="max-width:none;min-width:20px;min-height:20px;display:inline-block;overflow:hidden;position:absolute;width:auto;margin:0;padding:0;top:-999px;white-space:nowrap;font-synthesis:none;font:"+c+";"}function B(a){var c=a.g.offsetWidth,b=c+100;a.j.style.width=b+"px";a.i.scrollLeft=b;a.h.scrollLeft=a.h.scrollWidth+100;return a.l!==c?(a.l=c,!0):!1}function C(a,c){function b(){var e=g;B(e)&&null!==e.g.parentNode&&c(e.l)}var g=a;p(a.h,b);p(a.i,b);B(a)};function D(a,c,b){c=c||{};b=b||window;this.family=a;this.style=c.style||"normal";this.weight=c.weight||"normal";this.stretch=c.stretch||"normal";this.context=b}var E=null,F=null,G=null,H=null;function I(a){null===F&&(M(a)&&/Apple/.test(window.navigator.vendor)?(a=/AppleWebKit\/([0-9]+)(?:\.([0-9]+))(?:\.([0-9]+))/.exec(window.navigator.userAgent),F=!!a&&603>parseInt(a[1],10)):F=!1);return F}function M(a){null===H&&(H=!!a.document.fonts);return H}
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function N(a,c){var b=a.style,g=a.weight;if(null===G){var e=document.createElement("div");try{e.style.font="condensed 100px sans-serif"}catch(q){}G=""!==e.style.font}return[b,g,G?a.stretch:"","100px",c].join(" ")}
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D.prototype.load=function(a,c){var b=this,g=a||"BESbswy",e=0,q=c||3E3,J=(new Date).getTime();return new Promise(function(K,L){if(M(b.context)&&!I(b.context)){var O=new Promise(function(r,t){function h(){(new Date).getTime()-J>=q?t(Error(""+q+"ms timeout exceeded")):b.context.document.fonts.load(N(b,'"'+b.family+'"'),g).then(function(n){1<=n.length?r():setTimeout(h,25)},t)}h()}),P=new Promise(function(r,t){e=setTimeout(function(){t(Error(""+q+"ms timeout exceeded"))},q)});Promise.race([P,O]).then(function(){clearTimeout(e);
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K(b)},L)}else u(function(){function r(){var d;if(d=-1!=k&&-1!=l||-1!=k&&-1!=m||-1!=l&&-1!=m)(d=k!=l&&k!=m&&l!=m)||(null===E&&(d=/AppleWebKit\/([0-9]+)(?:\.([0-9]+))/.exec(window.navigator.userAgent),E=!!d&&(536>parseInt(d[1],10)||536===parseInt(d[1],10)&&11>=parseInt(d[2],10))),d=E&&(k==y&&l==y&&m==y||k==z&&l==z&&m==z||k==A&&l==A&&m==A)),d=!d;d&&(null!==f.parentNode&&f.parentNode.removeChild(f),clearTimeout(e),K(b))}function t(){if((new Date).getTime()-J>=q)null!==f.parentNode&&f.parentNode.removeChild(f),
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L(Error(""+q+"ms timeout exceeded"));else{var d=b.context.document.hidden;if(!0===d||void 0===d)k=h.g.offsetWidth,l=n.g.offsetWidth,m=v.g.offsetWidth,r();e=setTimeout(t,50)}}var h=new w(g),n=new w(g),v=new w(g),k=-1,l=-1,m=-1,y=-1,z=-1,A=-1,f=document.createElement("div");f.dir="ltr";x(h,N(b,"sans-serif"));x(n,N(b,"serif"));x(v,N(b,"monospace"));f.appendChild(h.g);f.appendChild(n.g);f.appendChild(v.g);b.context.document.body.appendChild(f);y=h.g.offsetWidth;z=n.g.offsetWidth;A=v.g.offsetWidth;t();
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C(h,function(d){k=d;r()});x(h,N(b,'"'+b.family+'",sans-serif'));C(n,function(d){l=d;r()});x(n,N(b,'"'+b.family+'",serif'));C(v,function(d){m=d;r()});x(v,N(b,'"'+b.family+'",monospace'))})})};"object"===typeof module?module.exports=D:(window.FontFaceObserver=D,window.FontFaceObserver.prototype.load=D.prototype.load);}());
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