Class: Cairo::GLSurface

Inherits:

Surface

• Object
• Surface
• Cairo::GLSurface

Defined in:

ext/cairo/rb_cairo_surface.c

Direct Known Subclasses

GLTextureSurface

Instance Method Summary

• #height ⇒ Object
• #initialize ⇒ Object constructor

  GL surface functions.

• #set_size ⇒ Object
• #swap_buffers ⇒ Object
• #width ⇒ Object

Methods inherited from Surface

#clone, #content, #copy_page, #create_similar, #create_similar_image, #destroy, #device, #device_offset, #dup, #fallback_resolution, #finish, #flush, #font_options, #get_mime_data, gl_supported?, gl_texture_supported?, image_supported?, #map_to_image, #mark_dirty, pdf_supported?, ps_supported?, quartz_image_supported?, quartz_supported?, recording_supported?, script_supported?, #set_device_offset, #set_fallback_resolution, #set_mime_data, #show_page, #sub_rectangle_surface, supported?, #supported_mime_type?, svg_supported?, tee_supported?, #unmap_image, win32_printing_supported?, win32_supported?, #write_to_png, xml_supported?

Constructor Details

#initialize ⇒ Object

GL surface functions

# File 'ext/cairo/rb_cairo_surface.c', line 1613

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

  rb_scan_args (argc, argv, "31",
                &rb_device, &rb_width, &rb_height, &rb_content);

  device = RVAL2CRDEVICE (rb_device);
  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, width, height) or "
                "(device, width, height, content)): %s",
                rb_cairo__inspect (rb_ary_new4 (argc, argv)));
      break;
    }

  surface = cairo_gl_surface_create (device, content, width, height);

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

Instance Method Details

#height ⇒ Object

# File 'ext/cairo/rb_cairo_surface.c', line 1719

static VALUE
cr_gl_surface_get_height (VALUE self)
{
  return INT2NUM (cairo_gl_surface_get_height (_SELF));
}

#set_size ⇒ Object

# File 'ext/cairo/rb_cairo_surface.c', line 1702

static VALUE
cr_gl_surface_set_size (VALUE self, VALUE width, VALUE height)
{
  cairo_surface_t *surface = NULL;

  surface = _SELF;
  cairo_gl_surface_set_size (surface, NUM2INT (width), NUM2INT (height));
  cr_surface_check_status (surface);
  return Qnil;
}

#swap_buffers ⇒ Object

# File 'ext/cairo/rb_cairo_surface.c', line 1725

static VALUE
cr_gl_surface_swap_buffers (VALUE self)
{
  cairo_surface_t *surface = NULL;

  surface = _SELF;
  cairo_gl_surface_swapbuffers (surface);
  cr_surface_check_status (surface);
  return Qnil;
}

#width ⇒ Object

# File 'ext/cairo/rb_cairo_surface.c', line 1713

static VALUE
cr_gl_surface_get_width (VALUE self)
{
  return INT2NUM (cairo_gl_surface_get_width (_SELF));
}