class Cairo::XMLSurface - cairo-1.14.1 Documentation

# class Cairo::XMLSurface

XML surface

### Public Class Methods

new(*args) click to toggle source

XML surface functions

    static VALUE
    cr_xml_surface_initialize (int argc, VALUE *argv, VALUE self)
    {
      cairo_surface_t *surface;
      cairo_device_t *device;
      double 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 = NUM2DBL (rb_width);
      height = NUM2DBL (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_xml_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;
    }