Moved the CMake install prefix function to FileSystemUtil and implemented the same logic also for theme loading.

NEWS.md

@@ -18,6 +18,8 @@ v1.0.0
 * GUI-configurable option to sort favorite games on the top of the game lists (favorites marked with stars)
 * Added new component GuiComplexTextEditPopup to handle changes to configuration file entries and similar
 * Speed improvements and optimizations, the application now starts faster and feels more responsive
+* Moved all resources to a subdirectory structure and enabled the CMake install prefix variable to generate the resources search path
+* Changed theme directory to the install prefix (e.g. /usr/local/share/emulationstation/themes) with themes in the home directory taking precedence
 * Refactoring, cleanup and documentation of the source code, removal of deprecated files etc.
 * All required fonts bundled with the application, no dependencies on the OS to provide them any longer
 * License files included for all the libraries and resources that are bundled with the application

es-core/src/ThemeData.cpp

@@ -592,10 +592,12 @@ std::map<std::string, ThemeSet> ThemeData::getThemeSets()
 {
     std::map<std::string, ThemeSet> sets;
 
+    // Check for themes under the data installation directory (install prefix), as well
+    // as under the user home directory.
     static const size_t pathCount = 2;
     std::string paths[pathCount] =
     {
-        "/etc/emulationstation/themes",
+        Utils::FileSystem::getInstallPrefixPath() + "/emulationstation/themes",
         Utils::FileSystem::getHomePath() + "/.emulationstation/themes"
     };
 

es-core/src/resources/ResourceManager.cpp

@@ -10,18 +10,6 @@
 #include "utils/FileSystemUtil.h"
 #include <fstream>
 
-#ifdef ES_INSTALL_PREFIX
-std::string installPrefix = ES_INSTALL_PREFIX;
-#else
-std::string installPrefix = "/usr/local";
-#endif
-
-#ifdef ES_DATAROOTDIR
-std::string dataRootDir = ES_DATAROOTDIR;
-#else
-std::string dataRootDir = "share";
-#endif
-
 auto array_deleter = [](unsigned char* p) { delete[] p; };
 auto nop_deleter = [](unsigned char* /*p*/) { };
 
@@ -50,12 +38,9 @@ std::string ResourceManager::getResourcePath(const std::string& path) const
         if (Utils::FileSystem::exists(test))
             return test;
 
-        // Check under the data installation directory.
+        // Check under the data installation directory (install prefix).
-        // The base directory is the value set for CMAKE_INSTALL_DIRECTORY during build.
+        test = Utils::FileSystem::getInstallPrefixPath() +
-        // The datarootdir directory is the value set for CMAKE_INSTALL_DATAROOTDIR during build.
+                "/emulationstation/resources/" + &path[2];
-        // If not defined, the default prefix path '/usr/local' and the default datarootdir
-        // directory 'share' will be used, i.e. '/usr/local/share'.
-        test = installPrefix + "/" + dataRootDir + "/emulationstation/resources/" + &path[2];
             if (Utils::FileSystem::exists(test))
             return test;
     }

es-core/src/utils/FileSystemUtil.cpp

@@ -21,6 +21,23 @@
 #include <unistd.h>
 #endif // _WIN32
 
+// Try to ascertain the install prefix as defined when CMake was run.
+// The installPrefix directory is the value set for CMAKE_INSTALL_DIRECTORY during build.
+// The datarootdir directory is the value set for CMAKE_INSTALL_DATAROOTDIR during build.
+// If not defined, the default prefix path '/usr/local' and the default datarootdir
+// directory 'share' will be used, i.e. combining to '/usr/local/share'.
+#ifdef ES_INSTALL_PREFIX
+std::string installPrefix = ES_INSTALL_PREFIX;
+#else
+std::string installPrefix = "/usr/local";
+#endif
+
+#ifdef ES_DATAROOTDIR
+std::string dataRootDir = ES_DATAROOTDIR;
+#else
+std::string dataRootDir = "share";
+#endif
+
 namespace Utils
 {
 	namespace FileSystem
@@ -221,6 +238,11 @@ namespace Utils
 
 		} // getExePath
 
+		std::string getInstallPrefixPath()
+		{
+			return installPrefix + "/" + dataRootDir;
+		}
+
 		std::string getPreferredPath(const std::string& _path)
 		{
 			std::string path   = _path;

es-core/src/utils/FileSystemUtil.h

@@ -18,6 +18,7 @@ namespace Utils
 		std::string getCWDPath         ();
 		void        setExePath         (const std::string& _path);
 		std::string getExePath         ();
+		std::string getInstallPrefixPath ();
 		std::string getPreferredPath   (const std::string& _path);
 		std::string getGenericPath     (const std::string& _path);
 		std::string getEscapedPath     (const std::string& _path);