Class: Cairo::GLTextureSurface

Inherits:

GLSurface

• Object
• Surface
• GLSurface
• Cairo::GLTextureSurface

Defined in:

ext/cairo/rb_cairo_surface.c

Instance Method Summary

• #initialize ⇒ Object constructor

Methods inherited from GLSurface

#height, #set_size, #swap_buffers, #width

Methods inherited from Surface

#clone, #content, #copy_page, #create_similar, #destroy, #device, #device_offset, #dup, #fallback_resolution, #finish, #flush, #font_options, #get_mime_data, #mark_dirty, #set_device_offset, #set_fallback_resolution, #set_mime_data, #show_page, #sub_rectangle_surface, #write_to_png

Constructor Details

#initialize ⇒ Object

# File 'ext/cairo/rb_cairo_surface.c', line 1510

static VALUE
cr_gl_texture_surface_initialize (int argc, VALUE *argv, VALUE self)
{
  cairo_surface_t *surface;
  cairo_device_t *device;
  unsigned int texture;
  int width, height;
  cairo_content_t content = CAIRO_CONTENT_COLOR_ALPHA;
  VALUE rb_device, rb_texture, rb_width, rb_height, rb_content;

  rb_scan_args (argc, argv, "41",
                &rb_device, &rb_texture, &rb_width, &rb_height, &rb_content);

  device = RVAL2CRDEVICE (rb_device);
  texture = NUM2UINT (rb_texture);
  width = NUM2INT (rb_width);
  height = NUM2INT (rb_height);
  switch (TYPE (rb_content))
    {
    case T_NIL:
      break;
    case T_STRING:
    case T_SYMBOL:
    case T_FIXNUM:
      content = RVAL2CRCONTENT (rb_content);
      break;
    default:
      rb_raise (rb_eArgError,
                "invalid argument (expect "
                "(device, texture, width, height) or "
                "(device, texture, width, height, content)): %s",
                rb_cairo__inspect (rb_ary_new4 (argc, argv)));
      break;
    }

  surface = cairo_gl_surface_create_for_texture (device, content,
                                                 texture,
                                                 width,
                                                 height);

  cr_surface_check_status (surface);
  DATA_PTR (self) = surface;
  if (rb_block_given_p ())
    yield_and_finish (self);
  return Qnil;
}