Method InvalidateImpl

src/SFGUI/Canvas.cpp:263–277

}

std::unique_ptr<RenderQueue> Canvas::InvalidateImpl() const {
	std::unique_ptr<RenderQueue> queue( new RenderQueue );

	queue->Add(
		Renderer::Get().CreateGLCanvas(
			m_custom_draw_callback
		)
	);

	// Override whatever viewport our parents want us to use.
	// Yes... we are very naughty aren't we...
	queue->SetViewport( m_custom_viewport );

	return queue;
}

sf::Vector2f Canvas::CalculateRequisition() {
	return sf::Vector2f( 0.f, 0.f );