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o=t.options.sliderL,s=t.options.sliderR,a=t.options.PI,r=t.x,c=t.y;i.beginPath(),i.moveTo(r,c),i.arc(r+o/2,c-s+2,s,.72*a,2.26*a),i.lineTo(r+o,c),i.arc(r+o+s-2,c+o/2,s,1.21*a,2.78*a),i.lineTo(r+o,c+o),i.lineTo(r,c+o),i.arc(r+s-2,c+o/2,s+.4,2.76*a,1.24*a,!0),i.lineTo(r,c),i.lineWidth=2,i.fillStyle="rgba(255, 255, 255, 0.7)",i.strokeStyle="rgba(255, 255, 255, 0.7)",i.stroke(),i[n](),i.globalCompositeOperation=e?"xor":"destination-over"},s=function(t,e){return Math.round(Math.random()*(e-t)+t)},a=function(e,n){var o=s(e,n);return i(t.options.getX)&&t.options.getX(o),o},r=new Image;r.crossOrigin="Anonymous";var c=0;r.onload=function(){t.x=a(n+10,t.options.width-(n+10)),t.y=s(10+2*t.options.sliderR,t.options.height-(n+10)),o(t.canvasCtx,"fill"),o(t.blockCtx,"clip"),t.canvasCtx.drawImage(r,0,0,t.options.width-2,t.options.height),t.blockCtx.drawImage(r,0,0,t.options.width-2,t.options.height);var e=t.y-2*t.options.sliderR-1,i=t.blockCtx.getImageData(t.x-3,e,n,n);t.block.width=n,t.blockCtx.putImageData(i,0,e+1),t.text.textContent=t.text.getAttribute("data-text")},r.onerror=function(){if(c++,"file:"===window.location.protocol&&(c=t.options.maxLoadCount,console.error("can't load pic resource file from File protocal. 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