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87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
#ifndef OPENMW_LUAUI_PROPERTIES
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#define OPENMW_LUAUI_PROPERTIES
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#include <MyGUI_Colour.h>
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#include <MyGUI_Types.h>
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#include <osg/Vec2>
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#include <sol/sol.hpp>
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#include <components/lua/luastate.hpp>
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#include <components/misc/color.hpp>
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namespace LuaUi
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{
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template <typename T>
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constexpr bool isMyGuiVector()
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{
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return std::is_same<T, MyGUI::IntPoint>() || std::is_same<T, MyGUI::IntSize>()
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|| std::is_same<T, MyGUI::FloatPoint>() || std::is_same<T, MyGUI::FloatSize>();
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}
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template <typename T>
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constexpr bool isMyGuiColor()
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{
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return std::is_same<T, MyGUI::Colour>();
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}
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template <typename T, typename LuaT>
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sol::optional<T> parseValue(const sol::object& table, std::string_view field, std::string_view errorPrefix)
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{
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sol::object opt = LuaUtil::getFieldOrNil(table, field);
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if (opt != sol::nil && !opt.is<LuaT>())
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{
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std::string error(errorPrefix);
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error += " \"";
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error += field;
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error += "\" has an invalid value \"";
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error += LuaUtil::toString(opt);
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error += "\"";
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throw std::logic_error(error);
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}
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if (!opt.is<LuaT>())
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return sol::nullopt;
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LuaT luaT = opt.as<LuaT>();
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if constexpr (isMyGuiVector<T>())
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return T(luaT.x(), luaT.y());
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else if constexpr (isMyGuiColor<T>())
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return T(luaT.r(), luaT.g(), luaT.b(), luaT.a());
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else
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return luaT;
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}
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template <typename T>
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sol::optional<T> parseValue(const sol::object& table, std::string_view field, std::string_view errorPrefix)
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{
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if constexpr (isMyGuiVector<T>())
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return parseValue<T, osg::Vec2f>(table, field, errorPrefix);
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else if constexpr (isMyGuiColor<T>())
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return parseValue<T, Misc::Color>(table, field, errorPrefix);
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else
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return parseValue<T, T>(table, field, errorPrefix);
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}
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template <typename T>
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T parseProperty(sol::object props, sol::object templateProps, std::string_view field, const T& defaultValue)
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{
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auto propOptional = parseValue<T>(props, field, "Property");
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auto templateOptional = parseValue<T>(templateProps, field, "Template property");
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if (propOptional.has_value())
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return propOptional.value();
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else if (templateOptional.has_value())
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return templateOptional.value();
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else
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return defaultValue;
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}
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template <typename T>
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T parseExternal(sol::object external, std::string_view field, const T& defaultValue)
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{
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auto optional = parseValue<T>(external, field, "External value");
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return optional.value_or(defaultValue);
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}
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}
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#endif // !OPENMW_LUAUI_PROPERTIES
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