Class: SDL::Screen

Inherits:

Surface

• Object
• Surface
• SDL::Screen

Defined in:

ext/sdl/sdl.c

Class Method Summary

• .open(w_, h_, bpp_, flags_) ⇒ Object

  // SDL::Screen methods:.

Methods inherited from Surface

#[], #format, #h, load, #make_collision_map, #transform, #w

Class Method Details

.open(w_, h_, bpp_, flags_) ⇒ Object

// SDL::Screen methods:

# File 'ext/sdl/sdl.c', line 402

static VALUE Screen_s_open(VALUE klass, VALUE w_, VALUE h_, VALUE bpp_, VALUE flags_) {
  UNUSED(klass);

  int w        = NUM2INT(w_);
  int h        = NUM2INT(h_);
  int bpp      = NUM2INT(bpp_);
  Uint32 flags = NUM2UINT32(flags_);

  if (!bpp) bpp = 32; // TODO: remove bpp option and always be 32?

  SDL_Window *window =
    SDL_CreateWindow("", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
                     w, h,
                     flags);
  if (!window) FAILURE("Screen.open(CreateWindow)");

  SDL_Renderer *renderer =
    SDL_CreateRenderer(window, -1,
                       SDL_RENDERER_PRESENTVSYNC|SDL_RENDERER_ACCELERATED);
  if (!renderer) FAILURE("Screen.open(CreateRenderer)");

  // bumps the refcount and returns the same thing
  SDL_PixelFormat *format = SDL_AllocFormat(SDL_PIXELFORMAT_RGBA32);
  if (!format)
    rb_raise(eSDLError, "SDL_AllocFormat freaked out.");

  VALUE vrenderer = TypedData_Wrap_Struct(cRenderer, &_Renderer_type, renderer);
  VALUE vwindow   = TypedData_Wrap_Struct(cWindow,   &_Window_type,   window);
  VALUE vformat   = TypedData_Wrap_Struct(cPixelFormat, &_PixelFormat_type, format);

  rb_ivar_set(vrenderer, id_iv_window,  vwindow);
  rb_ivar_set(vrenderer, id_iv_format,  vformat);

  return vrenderer;
}