Function createWindow

src/OpenLoco/src/Ui.cpp:228–284

0x00405409

    // 0x00405409
    void createWindow(const Config::Display& cfg)
    {
        if (!SDL_Init(SDL_INIT_VIDEO))
        {
            throw Exception::RuntimeError("Unable to initialise SDL2 video subsystem.");
        }

        // Create the window
        auto props = getWindowProps(cfg);
        _window = SDL_CreateWindowWithProperties(props);

        if (_window == nullptr)
        {
            SDL_DestroyProperties(props);
            throw Exception::RuntimeError("Unable to create SDL3 window.");
        }

#ifdef _WIN32
        // Grab the HWND
        _hwnd = (HWND)SDL_GetPointerProperty(SDL_GetWindowProperties(_window), SDL_PROP_WINDOW_WIN32_HWND_POINTER, nullptr);
#endif

        setWindowIcon();

        auto width = SDL_GetNumberProperty(props, SDL_PROP_WINDOW_CREATE_WIDTH_NUMBER, 640);
        auto height = SDL_GetNumberProperty(props, SDL_PROP_WINDOW_CREATE_HEIGHT_NUMBER, 480);
        if (cfg.mode == Config::ScreenMode::window)
        {
            _lastWindowedResolution = { static_cast<int32_t>(width), static_cast<int32_t>(height) };
        }

        // Create a palette for the window
        auto& drawingEngine = Gfx::getDrawingEngine();
        drawingEngine.initialize(_window);
        drawingEngine.setVSync(cfg.vsync);
        drawingEngine.resize(width, height);

        // SDL2 always activated text input by default on desktop platforms, SDL3 does not.
        // TODO: Do this properly and activate/deactivate depending on textbox focus, we should also
        // set the input rectangle to avoid IME issues.
        SDL_StartTextInput(_window);

        SDL_DestroyProperties(props);

#if !(defined(__APPLE__) && defined(__MACH__))
        if (cfg.mode != Config::ScreenMode::window)
        {
            auto startupResolution = getDisplayResolutionByMode(cfg.mode);
            if (!setDisplayMode(cfg.mode, startupResolution))
            {
                Logging::error("Failed to apply startup display mode");
            }
        }
#endif

        SDL_ShowWindow(_window);
    }