Package org.lwjgl.util.harfbuzz

Interface hb_font_get_glyph_advances_func_tI

All Superinterfaces:
CallbackI, Pointer
All Known Implementing Classes:
hb_font_get_glyph_advances_func_t
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public interface hb_font_get_glyph_advances_func_tI extends CallbackI
Callback function: hb_font_get_glyph_advances_func_t

  • Nested Class Summary

    Nested classes/interfaces inherited from interface org.lwjgl.system.Pointer

    Pointer.Default

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final FFICIF
    CIF
     

    Fields inherited from interface org.lwjgl.system.Pointer

    BITS32, BITS64, CLONG_SHIFT, CLONG_SIZE, POINTER_SHIFT, POINTER_SIZE

  • Method Summary

    Modifier and Type
    Method
    Description
    default void
    callback(long ret, long args)
    The Java method that will be called from native code when the native callback function is invoked.
    default FFICIF
    getCallInterface()
    Returns the libffi Call Interface for this callback function.
    void
    invoke(long font, long font_data, int count, long first_glyph, int glyph_stride, long first_advance, int advance_stride, long user_data)
    void (* hb_font_get_glyph_advances_func_t) (hb_font_t * font, void * font_data, unsigned int count, hb_codepoint_t const * first_glyph, unsigned int glyph_stride, hb_position_t * first_advance, unsigned int advance_stride, void * user_data)

    Methods inherited from interface org.lwjgl.system.CallbackI

    address

  • Field Details

    • CIF

      static final FFICIF CIF

  • Method Details

    • getCallInterface

      default FFICIF getCallInterface()
      Description copied from interface: CallbackI
      Returns the libffi Call Interface for this callback function. [INTERNAL API]
      Specified by:
      getCallInterface in interface CallbackI
      Returns:
      the CIF structure for this callback function

    • callback

      default void callback(long ret, long args)
      Description copied from interface: CallbackI
      The Java method that will be called from native code when the native callback function is invoked.
      Specified by:
      callback in interface CallbackI
      Parameters:
      ret - a pointer to the memory used for the function's return value.

      If the function is declared as returning void, then this value is garbage and should not be used.

      Otherwise, the callback must fill the object to which this points, following the same special promotion behavior as LibFFI.ffi_call(org.lwjgl.system.libffi.FFICIF, long, java.nio.ByteBuffer, org.lwjgl.PointerBuffer). That is, in most cases, ret points to an object of exactly the size of the type specified when CIF was constructed. However, integral types narrower than the system register size are widened. In these cases your program may assume that ret points to an ffi_arg object.

      args - a vector of pointers to memory holding the arguments to the function

    • invoke

      void invoke(long font, long font_data, int count, long first_glyph, int glyph_stride, long first_advance, int advance_stride, long user_data)
      void (* hb_font_get_glyph_advances_func_t) (hb_font_t * font, void * font_data, unsigned int count, hb_codepoint_t const * first_glyph, unsigned int glyph_stride, hb_position_t * first_advance, unsigned int advance_stride, void * user_data)