Add comments; Remove do-nothing, do-nothing-pix

src/modules/DecodeQr/Module.js

@@ -2,29 +2,46 @@
  * Decodes QR from a given image.
  */
 module.exports = function DoNothing(options,UI) {
+
   options = options || {};
   options.title = "Decode QR Code";
+
+  // Tell the UI that a step has been added
   UI.onSetup(options.step);
+
   var output;
   var jsQR = require('jsqr');
   var getPixels = require('get-pixels');
 
+  // This function is called everytime a step has to be redrawn
   function draw(input,callback) {
 
     UI.onDraw(options.step);
 
     const step = this;
+
     getPixels(input.src,function(err,pixels){
+
       if(err) throw err;
+
       var w = pixels.shape[0];
       var h = pixels.shape[1];
       var decoded = jsQR.decodeQRFromImage(pixels.data,w,h);
+
+      // This output is accessible to Image Sequencer
       step.output = input;
-      step.output.data = decoded;
+
+      // Tell Image Sequencer that this step is complete
       callback();
+
+      // These values are accessible to the UI
       options.step.output = input.src;
+      options.step.qrval = decoded;
+
+      // Tell the UI that the step is complete and output is set
       UI.onComplete(options.step);
     });
+
   }
 
   return {