#include <stdio.h>
#include <stdlib.h>

#include <SDL.h>

#define SDL_ERROR(FMT, ...) do {					\
	fprintf(stderr, "%s(%d): " FMT ": %s\n",			\
		__FILE__, __LINE__, ##__VA_ARGS__, SDL_GetError());	\
} while (0)

#define SCREEN_WIDTH	640
#define SCREEN_HEIGHT	480

static SDL_Surface *screen;

static inline void
handle_events(void)
{
	SDL_Event event;

	while (SDL_PollEvent(&event)) {
		switch (event.type) {
		case SDL_KEYDOWN:
			switch (event.key.keysym.sym) {
			case SDLK_f:
				if (!SDL_WM_ToggleFullScreen(screen)) {
					SDL_ERROR("SDL_WM_ToggleFullScreen");
					exit(EXIT_FAILURE);
				}
				break;

			case SDLK_m:
				SDL_ShowCursor(!SDL_ShowCursor(SDL_QUERY));
				break;

			case SDLK_ESCAPE:
				exit(EXIT_SUCCESS);

			default:
				break;
			}
			break;

		case SDL_QUIT:
			exit(EXIT_SUCCESS);

		default:
			break;
		}
	}
}

int
main(int argc, char **argv)
{
	if (SDL_Init(SDL_INIT_VIDEO)) {
		SDL_ERROR("SDL_Init");
		return EXIT_FAILURE;
	}
	atexit(SDL_Quit);

	SDL_WM_SetCaption("Effect Pad", NULL);

	screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, 32,
				  SDL_HWSURFACE | SDL_DOUBLEBUF);
	if (screen == NULL) {
		SDL_ERROR("SDL_SetVideoMode");
		return EXIT_FAILURE;
	}

	for (;;) {
		handle_events();

		SDL_Delay(100);
	}

	/* never reached */
	return EXIT_FAILURE;
}