Method draw

src/backend/common/window.hpp:110–113

        }

        inline void draw(Image* pImage, const bool pKeepAspectRatio) {
            pImage->keepAspectRatio(pKeepAspectRatio);
            mWindow->draw(pImage->impl()) ;
        }

        inline void draw(const Chart* pChart) {
            mWindow->draw(pChart->impl()) ;