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, #create_similar_image, #destroy, #device, #device_offset, #device_scale, #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_device_scale, #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

# File 'ext/cairo/rb_cairo_surface.c', line 1229

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;
#  ifdef HAVE_RUBY_COCOA
  static VALUE rb_cOSXCGContextRef = Qnil;
#  endif

  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:
#  ifdef HAVE_RUBY_COCOA
          if (NIL_P (rb_cOSXCGContextRef))
            rb_cOSXCGContextRef =
              rb_const_get (rb_const_get (rb_cObject, rb_intern ("OSX")),
                            rb_intern ("CGContextRef"));
#  endif

#  ifdef HAVE_RUBY_COCOA
          if (RTEST (rb_obj_is_kind_of (arg1, rb_cOSXCGContextRef)))
            {
              rbobj_to_nsobj (arg1, &objc_object);
            }
          else
#  endif
            {
              if (!NIL_P (rb_cairo__cFFIPointer) &&
                  RTEST (rb_obj_is_kind_of (arg1, rb_cairo__cFFIPointer)))
                {
                  VALUE rb_objc_pointer;
                  rb_objc_pointer = rb_funcall (arg1,
                                                rb_intern ("address"),
                                                0);
                  objc_object = NUM2ULONG (rb_objc_pointer);
                }
              else
                {
                  rb_raise (rb_eArgError,
                            "invalid argument (expect "
                            "(width, height), "
                            "(format, width, height), "
                            "(cg_context, width, height) or "
                            "(ffi_pointer, 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 1324

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

  context = cairo_quartz_surface_get_cg_context (_SELF);
  objc_object = (id)context;
  return ocid_to_rbobj (Qnil, objc_object);
#  else
  rb_raise (rb_eNotImpError,
            "%s#cg_context requires RubyCocoa",
            rb_obj_classname(self));
  return Qnil;
#  endif
}