Change directory structure

luprex/cpp/core/gui.cpp

@@ -0,0 +1,70 @@
+#include "wrap-string.hpp"
+#include "wrap-map.hpp"
+#include "wrap-vector.hpp"
+#include "util.hpp"
+#include "gui.hpp"
+#include "luastack.hpp"
+
+void Gui::store_global_pointer(lua_State *L, Gui *g) {
+    lua_pushstring(L, "gui");
+    lua_pushlightuserdata(L, g);
+    lua_rawset(L, LUA_REGISTRYINDEX);
+}
+
+Gui *Gui::fetch_global_pointer(lua_State *L) {
+    lua_pushstring(L, "gui");
+    lua_rawget(L, LUA_REGISTRYINDEX);
+    Gui *result = (Gui *)lua_touserdata(L, -1);
+    if (result == nullptr) {
+        luaL_error(L, "Not currently building a GUI");
+    }
+    lua_pop(L, 1);
+    return result;
+}
+
+void Gui::menu_item(const eng::string &action, const eng::string &label) {
+    GuiElt elt;
+    elt.type_ = GuiElt::TYPE_MENU_ITEM;
+    elt.action_ = action;
+    elt.label_ = label;
+    elts_.push_back(elt);
+}
+
+bool Gui::has_action(const eng::string &action) const {
+    for (const GuiElt &elt : elts_) {
+        if (elt.action_ == action) {
+            return true;
+        }
+    }
+    return false;
+}
+
+eng::string Gui::get_action(int64_t index) {
+    if ((index < 0) || (index >= int64_t(elts_.size()))) {
+        return "";
+    }
+    return elts_[index].action();
+}
+
+eng::string Gui::menu_debug_string() const {
+    eng::ostringstream oss;
+    int index = 0;
+    for (const GuiElt &elt : elts()) {
+        oss << index << " " << elt.label() << std::endl;
+        index += 1;
+    }
+    return oss.str();
+}
+
+LuaDefine(gui_menu_item, "action,label", "add a menu item to the current gui") {
+    Gui *gui = Gui::fetch_global_pointer(L);
+    LuaArg laction, llabel;
+    LuaStack LS(L, laction, llabel);
+    eng::string action = LS.ckstring(laction);
+    eng::string label = LS.ckstring(llabel);
+    if (!sv::has_prefix(action, "cb_")) {
+        luaL_error(L, "menuitem callbacks must start with cb_");
+    }
+    gui->menu_item(action, label);
+    return LS.result();
+}