Class: Cairo::QuartzSurface

Inherits:

Surface

• Object
• Surface
• Cairo::QuartzSurface

Defined in:

ext/cairo/rb_cairo_surface.c

Instance Method Summary

• #cg_context ⇒ Object
• #initialize ⇒ Object constructor

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 1166

static VALUE
cr_quartz_surface_initialize (int argc, VALUE *argv, VALUE self)
{
  id objc_object = nil;
  CGContextRef context;
  unsigned int width, height;
  cairo_surface_t *surface = NULL;
  cairo_format_t format = CAIRO_FORMAT_ARGB32;
  VALUE arg1, arg2, arg3, rb_width, rb_height;
  static VALUE rb_cOSXCGContextRef = Qnil;

  rb_scan_args (argc, argv, "21", &arg1, &arg2, &arg3);

  if (argc == 2)
    {
      rb_width = arg1;
      rb_height = arg2;
    }
  else
    {
      switch (TYPE (arg1))
        {
        case T_NIL:
          break;
        case T_STRING:
        case T_SYMBOL:
        case T_FIXNUM:
          format = RVAL2CRFORMAT (arg1);
          break;
        default:
          if (NIL_P (rb_cOSXCGContextRef))
            rb_cOSXCGContextRef =
              rb_const_get (rb_const_get (rb_cObject, rb_intern ("OSX")),
                            rb_intern ("CGContextRef"));

          if (RTEST (rb_obj_is_kind_of (arg1, rb_cOSXCGContextRef)))
            rbobj_to_nsobj (arg1, &objc_object);
          else
            rb_raise (rb_eArgError,
                      "invalid argument (expect "
                      "(width, height), "
                      "(format, width, height) or "
                      "(cg_context, width, height)): %s",
                      rb_cairo__inspect (rb_ary_new3 (3, arg1, arg2, arg3)));
          break;
        }

      rb_width = arg2;
      rb_height = arg3;
    }

  width = NUM2UINT (rb_width);
  height = NUM2UINT (rb_height);

  if (objc_object == nil)
    {
      surface = cairo_quartz_surface_create (format, width, height);
    }
  else
    {
      context = (CGContextRef)objc_object;
      surface =
        cairo_quartz_surface_create_for_cg_context (context, 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

#cg_context ⇒ Object

# File 'ext/cairo/rb_cairo_surface.c', line 1238

static VALUE
cr_quartz_surface_get_cg_context (VALUE self)
{
  CGContextRef context;
  id objc_object;

  context = cairo_quartz_surface_get_cg_context (_SELF);
  objc_object = (id)context;
  return ocid_to_rbobj (Qnil, objc_object);
}