move the white border of crop rectangle out by 1

Program.cs

@@ -1060,7 +1060,7 @@ public class Game : GameWindow {
       Texture star = (activePhoto.Rating > i) ? STAR_FILLED : STAR_EMPTY;
       DrawTexture(star, geometry.StarBoxes[i].Min.X, geometry.StarBoxes[i].Min.Y);
     }
-    bool cropActive = activeTool.GetType().Name == "CropTool";
+    bool cropActive = activeTool is CropTool;
     DrawCropRectangle(cropActive);
 
     // Draw thumbnail boxes.
@@ -1115,7 +1115,7 @@ public class Game : GameWindow {
     DrawFilledBox(new Box2i(left, 0, geometry.PhotoBox.Max.X, top), shadeColor);
     DrawFilledBox(new Box2i(left, bottom, geometry.PhotoBox.Max.X, geometry.PhotoBox.Max.Y), shadeColor);
     DrawFilledBox(new Box2i(right, top, geometry.PhotoBox.Max.X, bottom), shadeColor);
-    DrawBox(new Box2i(left, top, right, bottom), 1, Color4.White);
+    DrawBox(new Box2i(left - 1, top - 1, right + 1, bottom + 1), 1, Color4.White);
     if (active) {
       DrawHorizontalLine(left, Util.Lerp(top, bottom, 1.0 / 3), right, Color4.White);
       DrawHorizontalLine(left, Util.Lerp(top, bottom, 2.0 / 3), right, Color4.White);