1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

use ::{fna3d_sys as sys, std::ffi::c_void};

/// Version of FNA3D in use
pub fn linked_version() -> u32 {
    unsafe { sys::FNA3D_LinkedVersion() }
}

/// [Newtype] of untyped [SDL_WindowFlags], which is used for [SDL_CreateWindow]
///
/// [Newtype]: https://doc.rust-lang.org/stable/rust-by-example/generics/new_types.html
/// [SDL_WindowFlags]: https://wiki.libsdl.org/SDL_WindowFlags
/// [SDL_CreateWindow]: https://wiki.libsdl.org/SDL_CreateWindow
pub struct SdlWindowFlags(pub u32);

// Init/Quit

/// Selects the most suitable graphics rendering backend for the system, then provides the
/// application with context-sensitive bitflags for the OS window.
///
/// Returns a bitflag value, typically SDL_WindowFlags masks.
pub fn prepare_window_attributes() -> SdlWindowFlags {
    SdlWindowFlags(unsafe { sys::FNA3D_PrepareWindowAttributes() })
}

/// After your window is created, call this to check for high-DPI support.
pub fn get_drawable_size(window: *mut c_void) -> (u32, u32) {
    let (mut w, mut h) = (0, 0);
    unsafe {
        sys::FNA3D_GetDrawableSize(window, &mut w, &mut h);
    }
    (w as u32, h as u32)
}