Class: Cairo::Path

Inherits:

Object

• Object
• Cairo::Path

Extended by:

Forwardable

Includes:

Enumerable

Defined in:

lib/cairo/path.rb,
ext/cairo/rb_cairo_path.c

Instance Method Summary

• #[] ⇒ Object
• #close ⇒ Object
• #each ⇒ Object
• #empty? ⇒ Boolean
• #initialize ⇒ Object constructor
• #size ⇒ Object (also: #length)

Constructor Details

#initialize ⇒ Object

# File 'ext/cairo/rb_cairo_path.c', line 298

static VALUE
cr_path_initialize (VALUE self)
{
  cairo_path_t *path;

  path = ALLOC(cairo_path_t);
  path->status = CAIRO_STATUS_SUCCESS;
  path->data = NULL;
  path->num_data = 0;

  DATA_PTR (self) = path;
  cr_path_ensure_internal_context (self, path);

  return Qnil;
}

Instance Method Details

#[] ⇒ Object

# File 'ext/cairo/rb_cairo_path.c', line 340

static VALUE
cr_path_ref (VALUE self, VALUE index)
{
  cairo_path_t *path = _SELF (self);
  int i, requested_index, real_index;

  requested_index = NUM2INT (index);
  if (requested_index < 0)
    {
      requested_index += cairo_path_get_size (path);
      if (requested_index < 0)
        return Qnil;
    }


  for (i = 0, real_index = 0; i < requested_index; i++)
    {
      if (real_index >= path->num_data)
        return Qnil;
      real_index += path->data[real_index].header.length;
    }

  if (real_index < path->num_data)
    return cr_path_data_to_ruby_object (&path->data[real_index]);
  else
    return Qnil;
}

#close ⇒ Object

# File 'lib/cairo/path.rb', line 11

def close
  @context.close_path
end

#each ⇒ Object

# File 'ext/cairo/rb_cairo_path.c', line 368

static VALUE
cr_path_each (VALUE self)
{
  cairo_path_t *path = _SELF(self);
  int i;

  for (i = 0; i < path->num_data; i += path->data[i].header.length)
    {
      rb_yield (cr_path_data_to_ruby_object (&(path->data[i])));
    }

  return self;
}

#empty? ⇒ Boolean

Returns:

• (Boolean)

# File 'ext/cairo/rb_cairo_path.c', line 314

static VALUE
cr_path_empty_p (VALUE self)
{
  cairo_path_t *path = _SELF (self);

  return CBOOL2RVAL (path->num_data == 0);
}

#size ⇒ Object Also known as: length

# File 'ext/cairo/rb_cairo_path.c', line 333

static VALUE
cr_path_size (VALUE self)
{
  cairo_path_t *path = _SELF (self);
  return INT2NUM (cairo_path_get_size (path));
}