Add a system where themes can present a simple menu to the user.

[nageru] / theme.h

diff --git a/theme.h b/theme.h
index f7897c77f9bf6b16ae3e5927af9b4c212ae21cc4..8712bf81542e9fb2df645f78ad0def61a475131c 100644 (file)
--- a/theme.h
+++ b/theme.h
@@ -104,9 +104,24 @@ public:
        }
 #endif
 
+       struct MenuEntry {
+               std::string text;
+               int lua_ref;
+       };
+       std::vector<MenuEntry> get_theme_menu() { return theme_menu; }  // Can be empty for no menu.
+       void theme_menu_entry_clicked(int lua_ref);
+
+       // Will be invoked every time the theme sets a new menu.
+       // Is not invoked for a menu that exists at the time of the callback.
+       void set_theme_menu_callback(std::function<void()> callback)
+       {
+               theme_menu_callback = callback;
+       }
+
 private:
        void register_constants();
        void register_class(const char *class_name, const luaL_Reg *funcs);
+       int set_theme_menu(lua_State *L);
 
        std::mutex m;
        lua_State *L;  // Protected by <m>.
@@ -125,7 +140,11 @@ private:
        std::vector<std::pair<LiveInputWrapper *, CEFCapture *>> html_signal_connections;
 #endif
 
+       std::vector<MenuEntry> theme_menu;
+       std::function<void()> theme_menu_callback;
+
        friend class LiveInputWrapper;
+       friend int ThemeMenu_set(lua_State *L);
 };
 
 // LiveInputWrapper is a facade on top of an YCbCrInput, exposed to