Updated to match API changes in Beta3.

InvocationRegistration had a constructor called Registration. I wonder if
that was causing the compile error with beta2.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4104 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/media/image/ImageUtil.as

@@ -1,10 +1,14 @@
 package com.threerings.media.image {
 
+import flash.display.Bitmap;
 import flash.display.BitmapData;
 import flash.display.DisplayObject;
 import flash.display.Shape;
-import flash.display.TextField;
 
+import flash.geom.Point;
+import flash.geom.Rectangle;
+
+import flash.text.TextField;
 import flash.text.TextLineMetrics;
 
 /**
@@ -13,16 +17,33 @@ import flash.text.TextLineMetrics;
 public class ImageUtil
 {
     /**
-     * Create a Shape that will display an error message of the specified
-     * dimensions.
+     * Create a DisplayObject that will display an error message
+     * of the specified dimensions.
      */
-    public static function createErrorImage (width :int, height :int) :Shape
+    public static function createErrorImage (width :int, height :int)
+            :DisplayObject
     {
         var shape :Shape = new Shape();
         shape.graphics.beginBitmapFill(createErrorBitmap());
         shape.graphics.drawRect(0, 0, width, height);
         shape.graphics.endFill();
         return shape;
+
+        /*
+        // Alternate implementation that creates an actual Bitmap object
+        var src :BitmapData = createErrorBitmap();
+        var data :BitmapData = new BitmapData(width, height, false);
+        data.draw(src);
+        var rect :Rectangle = new Rectangle(0, 0, src.width, src.height);
+        for (var xx :int = 0; xx < width; xx += src.width) {
+            for (var yy :int = 0; yy < height; yy += src.height) {
+                if (xx != 0 || yy != 0) {
+                    data.copyPixels(data, rect, new Point(xx, yy));
+                }
+            }
+        }
+        return new Bitmap(data);
+        */
     }
 
     /**