Interface GetTableTagsFunc

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("org.javagi.JavaGI")
public interface GetTableTagsFunc
extends FunctionPointer

Functional interface declaration of the GetTableTagsFunc callback.

See Also:

• run(Face, int, Out)

Method Summary

Modifier and Type	Method	Description
int	run(Face face, int startOffset, @Nullable Out<Tag[]> tableTags)	Callback function for hb_face_get_table_tags().
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment, int, MemorySegment, MemorySegment, MemorySegment) method.
default int	upcall(MemorySegment face, int startOffset, MemorySegment tableCount, MemorySegment tableTags, MemorySegment userData)	The upcall method is called from native code.

Method Details

run

int run(Face face,
 int startOffset,
 @Nullable Out<Tag[]> tableTags)

Callback function for hb_face_get_table_tags().

Parameters:

face - A face object

startOffset - The index of first table tag to retrieve

tableTags - The array of table tags found

Returns:

Total number of tables, or zero if it is not possible to list

Since:

10.0.0

upcall

default int upcall(MemorySegment face,
 int startOffset,
 MemorySegment tableCount,
 MemorySegment tableTags,
 MemorySegment userData)

The upcall method is called from native code. The parameters are marshaled and run(Face, int, Out) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer