click on stars to set rating

Program.cs

@@ -596,14 +596,21 @@ public class Game : GameWindow {
       upTimer = Int64.MaxValue;
     }
 
-    // Look for mouse clicks on thumbnails.
+    // Look for mouse clicks on thumbnails or stars.
     //
     // Note that we don't bounds-check photoIndex until after all the possible
     // inputs that might affect it. That simplifies this logic significantly.
     if (MouseState.IsButtonPressed(MouseButton.Button1)) {
+      Vector2i click = (Vector2i) MouseState.Position;
+
+      for (int i = 0; i < geometry.StarBoxes.Count; i++) {
+        if (geometry.StarBoxes[i].ContainsInclusive(click)) {
+          photos[photoIndex].Rating = i + 1;
+        }
+      }
+
       for (int i = 0; i < geometry.ThumbnailBoxes.Count; i++) {
-        Box2i box = geometry.ThumbnailBoxes[i];
-        if (box.ContainsInclusive((Vector2i) MouseState.Position)) {
+        if (geometry.ThumbnailBoxes[i].ContainsInclusive(click)) {
           photoIndex = ribbonIndex + i;
         }
       }