Method setSpeed

src/app/ui/editor/tool_loop_impl.cpp:238–238

  gfx::Rect getGridBounds() override { return m_docPref.grid.bounds(); }
  gfx::Point getCelOrigin() override { return m_celOrigin; }
  void setSpeed(const gfx::Point& speed) override { m_speed = speed; }
  gfx::Point getSpeed() override { return m_speed; }
  tools::Ink* getInk() override { return m_ink.get(); }
  tools::Controller* getController() override { return m_controller; }