Add mlx_new_fullscreen_window.

[librity]

I would like to add this functions that lets you create a fullscreen window.
I wanna add a fullscreen mode to my fract-ol project.

It's almost identical to mlx_new_window, except it gets the screen resolution from mlx_get_screen_size and sets the override_redirect WindowAttribute to true.
It's based on @jerem-ma 's implementation:

• https://github.com/jerem-ma/goose-linux/blob/master/srcs/mlx_new_window_fullscreen.c

I don't know if there's a better way of doing this, and I'm open to suggestions.
I also separated the test main into different functions to facilitate debugging.

Thank you for your time.

[jerem-ma]

Hi !
This function you found on my repo is pretty ugly, for example it asks for a size even if it does not need one at all haha.
For the moment, this function is only used for test, let me fix that later, it will be prettier 👌

EDIT : Ah no, I do not have that in my function, you added that by your own, mb. It is still not pretty 👀

[Rush-iam]

I think it will be much better not to duplicate whole 50-lines function with differences in 2 lines, but make it much shorter with only 3 steps:

1. mlx_get_screen_size()
2. mlx_new_window() with screen size from step 1
3. XChangeWindowAttributes() which will change override_redirect attribute of window from step 2

[librity]

I think it will be much better not to duplicate whole 50-lines function with differences in 2 lines, but make it much shorter with only 3 steps:

1. mlx_get_screen_size()
2. mlx_new_window() with screen size from step 1
3. XChangeWindowAttributes() which will change override_redirect attribute of window from step 2

Will do.

[librity]

void	*mlx_new_fullscreen_window(t_xvar *xvar, int *size_x, int *size_y,
		char *title)
{
	t_win_list				*new_win;
	XSetWindowAttributes	x_set_wa;

	x_set_wa.override_redirect = 1;
	mlx_get_screen_size(xvar, size_x, size_y);
	new_win = mlx_new_window(xvar, *size_x, *size_y, title);
	if (new_win == NULL)
		return (NULL);
	XChangeWindowAttributes(xvar->display, new_win->window,
		CWOverrideRedirect,
		&x_set_wa
	);
	return (new_win);
}

@Rush-iam it's segfaulting when I call XChangeWindowAttributes, any insights why that might be?

[librity]

@Rush-iam I ran XChangeWindowAttributes in the test main and it doesn't make the window go fullscreen, probably due to one of the many forced configs set in mlx_new_window.
I managed to re-use much of the logic with static functions.

[vcwild]

LGTM! 🔥 🔥

This is really useful if someone is using mlx with a tiling window manager