Package org.freedesktop.harfbuzz

Interface UnicodeDecomposeFunc

All Superinterfaces:

FunctionPointer

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
@Generated("io.github.jwharm.JavaGI")
public interface UnicodeDecomposeFunc
extends FunctionPointer

Functional interface declaration of the UnicodeDecomposeFunc callback.

See Also:

• run(org.freedesktop.harfbuzz.UnicodeFuncs, org.freedesktop.harfbuzz.Codepoint, org.freedesktop.harfbuzz.Codepoint, org.freedesktop.harfbuzz.Codepoint)

Method Summary

Modifier and Type	Method	Description
Bool	run(UnicodeFuncs ufuncs, Codepoint ab, Codepoint a, Codepoint b)	A virtual method for the hb_unicode_funcs_t structure.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, int, java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.
default int	upcall(MemorySegment ufuncs, int ab, MemorySegment a, MemorySegment b, MemorySegment userData)	The upcall method is called from native code.

Method Details

run

Bool run(UnicodeFuncs ufuncs,
 Codepoint ab,
 Codepoint a,
 Codepoint b)

A virtual method for the hb_unicode_funcs_t structure.

This method should decompose an input Unicode code point, returning the two decomposed code points in hb_codepoint_t output parameters (if successful). The method must return an hb_bool_t indicating the success of the composition.

upcall

default int upcall(MemorySegment ufuncs,
 int ab,
 MemorySegment a,
 MemorySegment b,
 MemorySegment userData)

The upcall method is called from native code. The parameters are marshaled and run(org.freedesktop.harfbuzz.UnicodeFuncs, org.freedesktop.harfbuzz.Codepoint, org.freedesktop.harfbuzz.Codepoint, org.freedesktop.harfbuzz.Codepoint) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, int, java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the function pointer will be allocated in this arena

Returns:

the native function pointer