Added helper method to scale images in Theme class

Author: cmaglie

app/src/processing/app/Theme.java

@@ -575,6 +575,12 @@ static public Image getLibImage(String filename, Component who, int width,
       image = tk.getImage(imageFile.getUrl());
     }
 
+    image = rescaleImage(image, who, width, height);
+
+    return image;
+  }
+
+  public static Image rescaleImage(Image image, Component who, int width, int height) {
     MediaTracker tracker = new MediaTracker(who);
     try {
       tracker.addImage(image, 0);
@@ -590,10 +596,22 @@ static public Image getLibImage(String filename, Component who, int width,
       } catch (InterruptedException e) {
       }
     }
-
     return image;
   }
 
+  public static Image scale(Image image, Component who) {
+    MediaTracker tracker = new MediaTracker(who);
+    try {
+      tracker.addImage(image, 0);
+      tracker.waitForAll();
+    } catch (InterruptedException e) {
+    }
+
+    int w = image.getWidth(null);
+    int h = image.getHeight(null);
+    return rescaleImage(image, who, scale(w), scale(h));
+  }
+
   /**
    * Get an image associated with the current color theme.
    */