Method drawTo

src/roo_display.cpp:141–151

 private:
  void drawTo(const Surface& s) const override {
    if (s.dx() == 0 && s.dy() == 0) {
      ClippingBufferedPixelWriter writer(s.out(), extents_, blending_mode_);
      fn_(writer);
    } else {
      TransformedDisplayOutput out(s.out(),
                                   Transformation().translate(s.dx(), s.dy()));
      ClippingBufferedPixelWriter writer(out, extents_, blending_mode_);
      fn_(writer);
    }
  }

  const std::function<void(ClippingBufferedPixelWriter&)>& fn_;
  Box extents_;