C++ conversion (#80)

Converted project to C++

Tactility/Source/AppManifest.h

@@ -0,0 +1,73 @@
+#pragma once
+
+#include <string>
+#include "CoreDefines.h"
+
+// Forward declarations
+typedef struct _lv_obj_t lv_obj_t;
+
+namespace tt {
+
+typedef void* App;
+
+typedef enum {
+    /** A desktop app sits at the root of the app stack managed by the Loader service */
+    AppTypeDesktop,
+    /** Apps that generally aren't started from the desktop (e.g. image viewer) */
+    AppTypeHidden,
+    /** Standard apps, provided by the system. */
+    AppTypeSystem,
+    /** The apps that are launched/shown by the Settings app. The Settings app itself is of type AppTypeSystem. */
+    AppTypeSettings,
+    /** User-provided apps. */
+    AppTypeUser
+} AppType;
+
+typedef void (*AppOnStart)(App app);
+typedef void (*AppOnStop)(App app);
+typedef void (*AppOnShow)(App app, lv_obj_t* parent);
+typedef void (*AppOnHide)(App app);
+
+typedef struct AppManifest {
+    /**
+     * The identifier by which the app is launched by the system and other apps.
+     */
+    std::string id;
+
+    /**
+     * The user-readable name of the app. Used in UI.
+     */
+    std::string name;
+
+    /**
+     * Optional icon.
+     */
+    std::string icon = {};
+
+    /**
+     * App type affects launch behaviour.
+     */
+    const AppType type = AppTypeUser;
+
+    /**
+     * Non-blocking method to call when app is started.
+     */
+    const AppOnStart on_start = nullptr;
+
+    /**
+     * Non-blocking method to call when app is stopped.
+     */
+    const AppOnStop _Nullable on_stop = nullptr;
+
+    /**
+     * Non-blocking method to create the GUI
+     */
+    const AppOnShow _Nullable on_show = nullptr;
+
+    /**
+     * Non-blocking method, called before gui is destroyed
+     */
+    const AppOnHide _Nullable on_hide = nullptr;
+} AppManifest;
+
+} // namespace