package {
    import flash.display.*;
    import flash.events.*;
    import flash.text.*;
    import flash.net.*;
  
    // Sets the color of a TextField to match the color of a selected 
    // pixel in an image.
    public class @ax-actionscript-bitmap-ColorPicker extends Sprite {
      private var img:Bitmap;           // The Bitmap object
      private var imgContainer:Sprite;  // Container for the Bitmap object
      private var t:TextField;          // The TextField that will be colored
  
      // Constructor function
      public function @ax-actionscript-bitmap-ColorPicker() {
        // Create the TextField and add it to 
        // the @ax-actionscript-bitmap-ColorPicker's display hierarchy
        t =  new TextField();
        t.text = "Essential ActionScript 3.0";
        t.autoSize = TextFieldAutoSize.LEFT;
        addChild(t);
  
        // Load the image
        var loader:Loader = new Loader();
        loader.contentLoaderInfo.addEventListener(Event.INIT, 
                                                  initListener);
        loader.load(new URLRequest("actionscript-bitmap-assets-sunset.jpg"));
      }
  
      // Invoked when the image has initialized
      private function initListener (e:Event):void {
        // Obtain a reference to the loaded Bitmap object
        img = e.target.content;
        // Put the loaded bitmap in a Sprite so we can detect mouse 
        // interaction with it
        imgContainer = new Sprite();
        imgContainer.addChild(img);
        // Add the Sprite to the @ax-actionscript-bitmap-ColorPicker's display hierarchy
        addChild(imgContainer);
        imgContainer.y = 30;
        // Start listening for mouse movement
        imgContainer.addEventListener(MouseEvent.MOUSE_MOVE, 
                                      mouseMoveListener);
      }
  
      // Invoked when the mouse moves over the Sprite containing the image
      private function mouseMoveListener (e:MouseEvent):void {
        // Set the text color to the pixel currently under the mouse
        t.textColor = img.bitmapData.getPixel32(e.localX, e.localY);
      }
    }
  }