neutrino: add a prototype of a lua plugin interface

this is just for preliminary tests, not yet really usable
for anything useful

src/gui/luainstance.h

@@ -0,0 +1,52 @@
+/*
+ * neutrino-mp lua to c++ bridge
+ *
+ * (C) 2013 Stefan Seyfried <seife@tuxboxcvs.slipkontur.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef _LUAINSTANCE_H
+#define _LUAINSTANCE_H
+
+/* LUA Is C */
+extern "C" {
+#include <lua.h>
+#include <lauxlib.h>
+#include <lualib.h>
+}
+#include <driver/fb_window.h>
+
+/* inspired by Steve Kemp http://www.steve.org.uk/ */
+class CLUAInstance
+{
+	static const char className[];
+	static const luaL_Reg methods[];
+	static CFBWindow *CheckWindow(lua_State *L, int narg);
+public:
+	CLUAInstance();
+	~CLUAInstance();
+	void runScript(const char *fileName);
+
+private:
+	lua_State* lua;
+	void registerFunctions();
+
+	static int NewWindow(lua_State *L);
+	static int PaintBox(lua_State *L);
+	static int PaintIcon(lua_State *L);
+	static int RenderString(lua_State *L);
+	static int GCWindow(lua_State *L);
+};
+
+#endif /* _LUAINSTANCE_H */