joyent-portal/spikes/architecture/sigmajs/vendor/plugins/sigma.renderers.snapshot.min.js

(function(a){function b(a,b,c){var d=document.createElement("a");d.setAttribute("href",a),d.setAttribute("download",c||"graph."+b);var e=document.createEvent("MouseEvent");e.initMouseEvent("click",!0,!1,window,0,0,0,0,0,!1,!1,!1,!1,0,null),d.dispatchEvent(e),delete d}function c(a){if(a=a||{},a.format&&!(a.format in e))throw Error('sigma.renderers.snaphot: unsupported format "'+a.format+'".');var c=this,f=this instanceof sigma.renderers.webgl,g=[],h=document.createElement("canvas"),i=h.getContext("2d"),j=!1;d.forEach(function(b){if(c.contexts[b]&&(a.labels!==!1||"labels"!==b)){var d=c.domElements[b]||c.domElements.scene,e=c.contexts[b];~g.indexOf(e)||(j||(h.width=f&&e instanceof WebGLRenderingContext?d.width/2:d.width,h.height=f&&e instanceof WebGLRenderingContext?d.height/2:d.height,j=!0,a.background&&(i.rect(0,0,h.width,h.height),i.fillStyle=a.background,i.fill())),e instanceof WebGLRenderingContext?i.drawImage(d,0,0,d.width/2,d.height/2):i.drawImage(d,0,0),g.push(e))}});var k=h.toDataURL(e[a.format||"png"]);return a.download&&b(k,a.format||"png",a.filename),delete i,delete h,delete g,k}if("undefined"==typeof sigma)throw"sigma.renderers.snapshot: sigma not in scope.";var d=["scene","edges","nodes","labels"],e={png:"image/png",jpg:"image/jpeg",gif:"image/gif",tiff:"image/tiff"};sigma.renderers.canvas.prototype.snapshot=c,sigma.renderers.webgl.prototype.snapshot=c}).call(this);