Adds a persistent file used to store user settings (#2931)

* Enable the loading of settings
* Add a user interface for changing the settings in the launcher


Co-authored-by: Emma Broman <emma.broman@liu.se>

include/openspace/engine/configuration.h

@@ -34,9 +34,9 @@
 #include <string>
 #include <vector>
 
-namespace openspace::documentation { struct Documentation; }
+namespace openspace {
 
-namespace openspace::configuration {
+namespace documentation { struct Documentation; }
 
 struct Configuration {
     Configuration() = default;
@@ -147,9 +147,10 @@ struct Configuration {
 
 std::filesystem::path findConfiguration(const std::string& filename = "openspace.cfg");
 
-Configuration loadConfigurationFromFile(const std::filesystem::path& filename,
+Configuration loadConfigurationFromFile(const std::filesystem::path& configurationFile,
+    const std::filesystem::path& settingsFile,
     const glm::ivec2& primaryMonitorResolution);
 
-} // namespace openspace::configuration
+} // namespace openspace
 
 #endif // __OPENSPACE_CORE___CONFIGURATION___H__

include/openspace/engine/globals.h

@@ -33,6 +33,7 @@ namespace ghoul::fontrendering { class FontManager; }
 
 namespace openspace {
 
+struct Configuration;
 class Dashboard;
 class DeferredcasterManager;
 class DownloadManager;
@@ -50,7 +51,6 @@ class SyncEngine;
 class TimeManager;
 class VersionChecker;
 struct WindowDelegate;
-namespace configuration { struct Configuration; }
 namespace interaction {
     struct JoystickInputStates;
     struct WebsocketInputStates;
@@ -88,7 +88,7 @@ inline SyncEngine* syncEngine;
 inline TimeManager* timeManager;
 inline VersionChecker* versionChecker;
 inline WindowDelegate* windowDelegate;
-inline configuration::Configuration* configuration;
+inline Configuration* configuration;
 inline interaction::ActionManager* actionManager;
 inline interaction::InteractionMonitor* interactionMonitor;
 inline interaction::JoystickInputStates* joystickInputStates;

include/openspace/engine/settings.h

@@ -0,0 +1,62 @@
+/*****************************************************************************************
+ *                                                                                       *
+ * OpenSpace                                                                             *
+ *                                                                                       *
+ * Copyright (c) 2014-2023                                                               *
+ *                                                                                       *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
+ * software and associated documentation files (the "Software"), to deal in the Software *
+ * without restriction, including without limitation the rights to use, copy, modify,    *
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to    *
+ * permit persons to whom the Software is furnished to do so, subject to the following   *
+ * conditions:                                                                           *
+ *                                                                                       *
+ * The above copyright notice and this permission notice shall be included in all copies *
+ * or substantial portions of the Software.                                              *
+ *                                                                                       *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT    *
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF  *
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE  *
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                                         *
+ ****************************************************************************************/
+
+#ifndef __OPENSPACE_CORE___SETTINGS___H__
+#define __OPENSPACE_CORE___SETTINGS___H__
+
+#include <openspace/properties/property.h>
+#include <filesystem>
+#include <optional>
+
+namespace openspace {
+
+struct Settings {
+    auto operator<=>(const Settings&) const = default;
+
+    std::optional<bool> hasStartedBefore;
+
+    std::optional<std::string> configuration;
+    std::optional<bool> rememberLastConfiguration;
+    std::optional<std::string> profile;
+    std::optional<bool> rememberLastProfile;
+    std::optional<properties::Property::Visibility> visibility;
+    std::optional<bool> bypassLauncher;
+
+    struct MRF {
+        auto operator<=>(const MRF&) const = default;
+
+        std::optional<bool> isEnabled;
+        std::optional<std::string> location;
+    };
+    MRF mrf;
+};
+
+std::filesystem::path findSettings(const std::string& filename = "settings.json");
+
+Settings loadSettings(const std::filesystem::path& filename = findSettings());
+void saveSettings(const Settings& settings, const std::filesystem::path& filename);
+
+} // namespace openspace
+
+#endif // __OPENSPACE_CORE___SETTINGS___H__