Allow ValueViewers to have a bounding box different from the Style's. This closes #64.

src/render/value/information.cpp

@@ -26,7 +26,7 @@ void InfoValueViewer::draw(RotatedDC& dc) {
     dc.SetFont(style().font, 1.0);
   }
   // draw background
-  RealRect rect = style().getInternalRect();
+  RealRect rect = dc.getInternalRect();
   dc.DrawRectangle(rect.grow(2));
   // draw text
   rect = rect.move(