Change she::Capabilities to a enum class

src/she/alleg4/she.cpp

@@ -148,7 +148,7 @@ public:
   }
 
   Capabilities capabilities() const override {
-    return (Capabilities)(kCanResizeDisplayCapability);
+    return (Capabilities)(Capabilities::CanResizeDisplay);
   }
 
   EventQueue* eventQueue() override { // TODO remove this function

src/she/capabilities.h

@@ -1,5 +1,5 @@
 // SHE library
-// Copyright (C) 2012-2013  David Capello
+// Copyright (C) 2012-2013, 2015  David Capello
 //
 // This file is released under the terms of the MIT license.
 // Read LICENSE.txt for more information.
@@ -10,10 +10,10 @@
 
 namespace she {
 
-  enum Capabilities {
-    kMultipleDisplaysCapability = 1,
-    kCanResizeDisplayCapability = 2,
-    kDisplayScaleCapability = 4,
+  enum class Capabilities {
+    MultipleDisplays = 1,
+    CanResizeDisplay = 2,
+    DisplayScale = 4,
   };
 
 } // namespace she

src/she/skia/skia_system.h

@@ -46,9 +46,9 @@ public:
 
   Capabilities capabilities() const override {
     return Capabilities(
-      int(kMultipleDisplaysCapability) |
-      int(kCanResizeDisplayCapability) |
-      int(kDisplayScaleCapability));
+      int(Capabilities::MultipleDisplays) |
+      int(Capabilities::CanResizeDisplay) |
+      int(Capabilities::DisplayScale));
   }
 
   EventQueue* eventQueue() override {