On Wed, Jan 15, 2014, at 08:45 AM, Philippe Delrieu wrote:
> Thanks for you answer . I have the idea to see in the SDL port (I work
> on the SDL2 port) which is finished and has the same problems. They
> solve the problem like this :
>
> pub fn unfold_bits(bitflags: u32) -> ~[SDL_WindowFlags] {
> let flags = [SDL_WINDOW_FULLSCREEN,
> SDL_WINDOW_OPENGL,
> SDL_WINDOW_SHOWN,
> SDL_WINDOW_HIDDEN,
> SDL_WINDOW_BORDERLESS,
> SDL_WINDOW_RESIZABLE,
> SDL_WINDOW_MINIMIZED,
> SDL_WINDOW_MAXIMIZED,
> SDL_WINDOW_INPUT_GRABBED,
> SDL_WINDOW_INPUT_FOCUS,
> SDL_WINDOW_MOUSE_FOCUS,
> SDL_WINDOW_FULLSCREEN_DESKTOP,
> SDL_WINDOW_FOREIGN
> ];
>
> flags.iter().filter_map(|&flag| {
> if bitflags & (flag as u32) != 0 { Some(flag) }
> else { None }
> }).collect()
> }
>
> Philippe
>
> Le 15/01/2014 17:36, SiegeLord a écrit :
> > On 01/15/2014 11:29 AM, Nicolas Silva wrote:
> >> I think enums are not a good fit for bitwise operations, it's not really
> >> meant for that.
> > I came to the same conclusion and came up with a nice macro to
> > automate that, seen here:
> > https://github.com/SiegeLord/RustAllegro/blob/master/src/rust_util.rs#L3..L56
> >
> > and used here
> > https://github.com/SiegeLord/RustAllegro/blob/master/src/allegro/internal/bitmap_like.rs#L9..L23
> >
> > .
> >
> > This enables a nice, C-like API when composing/extracting flags via
> > the bit-or and bit-and operators.
> >
> > -SL
> > _______________________________________________
> > Rust-dev mailing list
> > [email protected]
> > https://mail.mozilla.org/listinfo/rust-dev
> >
> >
>
> _______________________________________________
> Rust-dev mailing list
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Did you know that there are SDL2 bindings for Rust?
See:
https://github.com/AngryLawyer/rust-sdl2/blob/master/src/sdl2/video.rs
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