class Cairo::ScriptSurface

script surface

Public Class Methods

new(*args) click to toggle source

script surface functions

static VALUE
cr_script_surface_initialize (int argc, VALUE *argv, VALUE self)
{
  cairo_surface_t *surface = NULL, *target = NULL;
  cairo_device_t *device;
  double width = 0.0, height = 0.0;
  cairo_content_t content = CAIRO_CONTENT_COLOR_ALPHA;
  VALUE arg1, arg2, arg3, arg4;

  rb_scan_args (argc, argv, "22", &arg1, &arg2, &arg3, &arg4);

  device = RVAL2CRDEVICE (arg1);
  if (argc == 2)
    {
      target = RVAL2CRSURFACE (arg2);
    }
  else
    {
      width = NUM2DBL (arg2);
      height = NUM2DBL (arg3);
      switch (TYPE (arg4))
        {
        case T_NIL:
          break;
        case T_STRING:
        case T_SYMBOL:
        case T_FIXNUM:
          content = RVAL2CRCONTENT (arg4);
          break;
        default:
          rb_raise (rb_eArgError,
                    "invalid argument (expect "
                    "(device, width, height), "
                    "(device, width, height, content) or "
                    "(device, surface)): %s",
                    rb_cairo__inspect (rb_ary_new4 (argc, argv)));
          break;
        }
    }

  if (target)
    surface = cairo_script_surface_create_for_target (device, target);
  else
    surface = cairo_script_surface_create (device, content, width, height);

  rb_cairo_surface_check_status (surface);
  DATA_PTR (self) = surface;
  if (rb_block_given_p ())
    rb_cairo__surface_yield_and_finish (self);
  return Qnil;
}