| 1 |
- (function(){function a(d,b){this.image=d;this.options={start:null,over:null,success:null,fail:null,quality:0.7};for(var c in b){this.options[c]=b[c]}if(this.options.quality>1){this.options.quality=1}this.ret={origin:null,base64:null,base64Len:null};this.init()}a.prototype={constructor:a,init:function(){var b=this;b.create(b.image)},create:function(f){var e=this,c=new Image(),d=e.ret,b=(typeof f==="string")?f:URL.createObjectURL(f);c.crossOrigin="*";c.onerror=function(){var g=new Error("图片加载失败");if(typeof e.options.fail==="function"){e.options.fail(g)}if(typeof e.options.over==="function"){e.options.over()}};c.onload=function(){var i=e.resize(this);var h=document.createElement("canvas");var g=h.getContext("2d");h.width=i.w;h.height=i.h;g.fillStyle="#fffff";g.fillRect(0,0,i.w,i.h);d.origin=f;g.drawImage(c,0,0,i.w,i.h);d.base64=h.toDataURL("image/jpeg",e.options.quality);j(d);function j(k){h=null;c=null;URL.revokeObjectURL(b);k.base64Len=k.base64.length;if(typeof e.options.success==="function"){e.options.success(k)}if(typeof e.options.over==="function"){e.options.over()}}};if(typeof this.options.start==="function"){this.options.start()}c.src=b},resize:function(c){var b=this.options.width,e=this.options.height,f=c.width/c.height,d={w:c.width,h:c.height};if(b&e){d.w=b;d.h=e}else{if(b){d.w=b;d.h=Math.ceil(b/f)}else{if(e){d.w=Math.ceil(e*f);d.h=e}}}if(d.w>=3264||d.h>=2448){d.w*=0.8;d.h*=0.8}return d}};window.auiCompress=function(c,b){return new a(c,b)}})();
|
