Factor in the percentage of the databuffer a BufferedMirage is using to

estimate its memory if its BufferedImage is a subimage of another
BufferedImage.

Include the amount of memory used by colorizations in ImageManager's cache
usage calculations.

Crank ImageManager's cache size up to 32 megs since a) it's actually seeing the
memory used by colorizations and b) the new seamonsters are pretty sizable.



git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@291 ed5b42cb-e716-0410-a449-f6a68f950b19

src/java/com/threerings/cast/bundle/BundledComponentRepository.java

@@ -355,10 +355,13 @@ public class BundledComponentRepository
         {
             // we don't need our images prepared for screen rendering
             BufferedImage src = _imgr.getImage(getImageKey(path), zations);
+            float percentageOfDataBuffer = 1;
             if (bounds != null) {
+                percentageOfDataBuffer = 
+                    (bounds.height * bounds.width) / (float)(src.getHeight() * src.getWidth());
                 src = src.getSubimage(bounds.x, bounds.y, bounds.width, bounds.height);
             }
-            return new BufferedMirage(src);
+            return new BufferedMirage(src, percentageOfDataBuffer);
         }
 
         /** The resource bundle from which we obtain image data. */