ttfSetFontDirection function

int ttfSetFontDirection(
  1. Pointer<TtfFont> font,
  2. int direction
)

Set direction to be used for text shaping by a font.

Any value supplied here will override the global direction set with the deprecated TTF_SetDirection().

Possible direction values are:

  • TTF_DIRECTION_LTR (Left to Right)
  • TTF_DIRECTION_RTL (Right to Left)
  • TTF_DIRECTION_TTB (Top to Bottom)
  • TTF_DIRECTION_BTT (Bottom to Top)

If SDL_ttf was not built with HarfBuzz support, this function returns -1.

\param font the font to specify a direction for. \param direction the new direction for text to flow. \returns 0 on success, or -1 on error.

\since This function is available since SDL_ttf 2.20.0.

extern DECLSPEC int SDLCALL TTF_SetFontDirection(TTF_Font *font, TTF_Direction direction)

Implementation

int ttfSetFontDirection(Pointer<TtfFont> font, int direction) {
  final ttfSetFontDirectionLookupFunction = libSdl2Ttf.lookupFunction<
      Int32 Function(Pointer<TtfFont> font, Int32 direction),
      int Function(
          Pointer<TtfFont> font, int direction)>('TTF_SetFontDirection');
  return ttfSetFontDirectionLookupFunction(font, direction);
}