ulearning-obs/dist/obs-qiniu.js

obs

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r=function(t){return(window.URL||window.webkitURL||window.mozURL).createObjectURL(t)}(t.file),o=new Image;o.onload=function(){e(o)},o.onerror=function(){n("image load error")},o.src=r})},t.prototype.getCanvas=function(t){var e=this;return new Promise(function(n,o){var s=document.createElement("canvas"),a=s.getContext("2d");if(a){var u=t.width,c=t.height;s.height=c,s.width=u,e.clear(a,u,c),a.drawImage(t,0,0),n(s)}else o(new i(r.GetCanvasContextFailed,"context is null"))})},t.prototype.doScale=function(t,e){return Ct(this,void 0,void 0,function(){var n,o,s,a,u,c,l,h,f,p,d,g,y,m,v,b;return It(this,function(w){if(1===e)return[2,t];if(n=t.getContext("2d"),o=Math.min(4,Math.ceil(1/e/St)),s=Math.pow(e,1/o),a=document.createElement("canvas"),u=a.getContext("2d"),c=t.width,l=t.height,h=c,f=l,a.width=c,a.height=l,!u||!n)throw new i(r.GetCanvasContextFailed,"mctx or sctx can't be null");for(g=0;g<o;g++)y=c*s|0,m=l*s|0,g===o-1&&(y=h*e,m=f*e),g%2==0?(p=t,d=u):(p=