// Compile with c++ $(sdl2-config --cflags --libs)

#include <SDL2/SDL.h>
#include <iostream>

int main()
{
	SDL_Init(SDL_INIT_EVERYTHING);
	auto window = SDL_CreateWindow("Window", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 64, 64, SDL_WINDOW_FULLSCREEN_DESKTOP);
	
	SDL_Renderer * renderer = SDL_CreateRenderer(window, -1, 0);

	bool quit = false;
	bool has_focus = true;
	SDL_Event e;
	while (!quit)
	{
		while (SDL_PollEvent( &e ) != 0)
		{
			switch( e.type )
			{
			case SDL_QUIT:
				quit = true;
				break;

			case SDL_WINDOWEVENT:
				switch (e.window.event)
				{
				case SDL_WINDOWEVENT_CLOSE:
					quit = true;
					break;
				}
				break;
			}
		}
		SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255);
		SDL_RenderClear(renderer);
		SDL_SetRenderDrawColor(renderer, 127, 0, 0, 255);
		int width;
		int height;
		SDL_GetRendererOutputSize(renderer, &width, &height);
		const SDL_Rect rect{width/4, height/4, width/2, height/2};
		SDL_RenderFillRect(renderer, &rect);
		SDL_RenderPresent(renderer);
	}
	SDL_DestroyRenderer(renderer);
	SDL_DestroyWindow(window);
	SDL_Quit();
	return 0;
}