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importScripts("blur.js"); function sendStatus(statusText) { postMessage({"type" : "status", "statusText" : statusText} ); } function messageHandler(e) { var messageType = e.data.type; switch (messageType) { case ("blur"): sendStatus("Worker started blur on data in range: " + e.data.startX + "-" + (e.data.startX+e.data.width)); var imageData = e.data.imageData; imageData = boxBlur(imageData, e.data.width, e.data.height, e.data.startX); postMessage({"type" : "progress", "imageData" : imageData, "width" : e.data.width, "height" : e.data.height, "startX" : e.data.startX }); sendStatus("Finished blur on data in range: " + e.data.startX + "-" + (e.data.width+e.data.startX)); break; default: sendStatus("Worker got message: " + e.data); } } addEventListener("message", messageHandler, true);