.. _program_listing_file_gui_Demeter_Renderer_SDL2.hpp:

Program Listing for File SDL2.hpp
=================================

|exhale_lsh| :ref:`Return to documentation for file <file_gui_Demeter_Renderer_SDL2.hpp>` (``gui/Demeter/Renderer/SDL2.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #pragma once
   
   #include <memory>
   
   #include <GL/glew.h>
   #include <SDL2/SDL.h>
   #include <SDL2/SDL_image.h>
   #include <SDL2/SDL_surface.h>
   
   #include "SDL_timer.h"
   
   struct SDL2 {
   private:
     bool _isSDLInit = false;
     bool _isIMGInit = false;
     SDL_Window *_window;
     SDL_GLContext _context = nullptr;
     SDL_Event _event;
     size_t _width;
     size_t _height;
   
     void SetAttribute(SDL_GLattr attr, int value) const  // NOLINT
     {
       SDL_GL_SetAttribute(attr, value);
     }
   
   public:
     SDL2() = default;
     ~SDL2();
   
     bool Init(size_t width = 800, size_t height = 600);
   
     void SetWindowSize(size_t width, size_t height)
     {
       _width = width;
       _height = height;
       glViewport(0, 0, (GLsizei)_width, (GLsizei)_height);
     }
   
     [[nodiscard]] size_t GetWidth() const
     {
       return _width;
     }
   
     [[nodiscard]] size_t GetHeight() const
     {
       return _height;
     }
   
     std::string GetError() const  // NOLINT
     {
       return SDL_GetError();
     }
   
     std::string GetIMGError() const  // NOLINT
     {
       return IMG_GetError();
     }
   
     void SwapWindow() const
     {
       SDL_GL_SwapWindow(_window);
     }
   
     void Clear(GLclampf r, GLclampf g, GLclampf b, GLclampf a) const  // NOLINT
     {
       glClearColor(r, g, b, a);
       glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
     }
   
     [[nodiscard]] Uint64 GetTicks64() const  // NOLINT
     {
       return SDL_GetTicks64();
     }
   
     [[nodiscard]] bool PollEvent()
     {
       return SDL_PollEvent(&_event);
     }
   
     [[nodiscard]] const SDL_Event &GetEvent() const
     {
       return _event;
     }
   
     [[nodiscard]] std::unique_ptr<SDL_Surface>
     IMGLoad(const std::string &s) const  // NOLINT
     {
       return std::unique_ptr<SDL_Surface>(IMG_Load(s.c_str()));
     }
   };