added wxStandardPaths::GetResourcesDir() and GetLocalizedResourcesDir()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38370 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/stdpaths.h

@@ -25,6 +25,20 @@
 class WXDLLIMPEXP_BASE wxStandardPathsBase
 {
 public:
+    // possible resources categorires
+    enum ResourceCat
+    {
+        // no special category
+        ResourceCat_None,
+
+        // message catalog resources
+        ResourceCat_Messages,
+
+        // end of enum marker
+        ResourceCat_Max
+    };
+
+
     // return the global standard paths object
     static wxStandardPathsBase& Get();
 
@@ -74,6 +88,27 @@ public:
     // Contents/Plugins app bundle subdirectory under Mac
     virtual wxString GetPluginsDir() const = 0;
 
+    // get resources directory: resources are auxiliary files used by the
+    // application and include things like image and sound files
+    //
+    // same as GetDataDir() for all platforms except Mac where it returns
+    // Contents/Resources subdirectory of the app bundle
+    virtual wxString GetResourcesDir() const { return GetDataDir(); }
+
+    // get localized resources directory containing the resource files of the
+    // specified category for the given language
+    //
+    // in general this is just GetResourcesDir()/lang under Windows and Unix
+    // and GetResourcesDir()/lang.lproj under Mac but is something quite
+    // different under Unix for message catalog category (namely the standard
+    // prefix/share/locale/lang/LC_MESSAGES)
+    virtual wxString
+    GetLocalizedResourcesDir(const wxChar *lang,
+                             ResourceCat category = ResourceCat_None) const
+    {
+        return GetResourcesDir() + wxFILE_SEP_PATH + lang;
+    }
+
 
     // virtual dtor for the base class
     virtual ~wxStandardPathsBase();