from LCD.hpp:599
bool drawStringRTLLine(int16_t& offset,
const Font* font,
TextDirection textDirection,
Unicode::UnicodeChar& currChar,
TextProvider& textProvider,
TextProvider& widthTextProvider,
DrawStringInternalFunctionPointer internalFunction,
const int numChars,
const bool useEllipsis,
DrawStringInternalStruct const* data);