Package org.freedesktop.harfbuzz

Interface UnicodeComposeFunc

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 UnicodeComposeFunc
extends FunctionPointer

Functional interface declaration of the UnicodeComposeFunc 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 a, Codepoint b, Codepoint ab)	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, int, java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.
default int	upcall(MemorySegment ufuncs, int a, int b, MemorySegment ab, MemorySegment userData)	The upcall method is called from native code.

Method Details

run

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

A virtual method for the hb_unicode_funcs_t structure.

This method should compose a sequence of two input Unicode code points by canonical equivalence, returning the composed code point in a hb_codepoint_t output parameter (if successful). The method must return an hb_bool_t indicating the success of the composition.

upcall

default int upcall(MemorySegment ufuncs,
 int a,
 int b,
 MemorySegment ab,
 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, int, java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer