Interface PaintPushGroupFunc

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 PaintPushGroupFunc
extends FunctionPointer

Functional interface declaration of the PaintPushGroupFunc callback.

See Also:

• run(PaintFuncs, MemorySegment)

Method Summary

Modifier and Type	Method	Description
void	run(PaintFuncs funcs, @Nullable MemorySegment paintData)	A virtual method for the hb_paint_funcs_t to use an intermediate surface for subsequent paint calls.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment, MemorySegment, MemorySegment) method.
default void	upcall(MemorySegment funcs, MemorySegment paintData, MemorySegment userData)	The upcall method is called from native code.

Method Details

run

void run(PaintFuncs funcs,
 @Nullable MemorySegment paintData)

A virtual method for the hb_paint_funcs_t to use an intermediate surface for subsequent paint calls.

The drawing will be redirected to an intermediate surface until a matching call to the hb_paint_funcs_pop_group_func_t vfunc.

Parameters:

funcs - paint functions object

paintData - The data accompanying the paint functions in hb_font_paint_glyph()

Since:

7.0.0

upcall

default void upcall(MemorySegment funcs,
 MemorySegment paintData,
 MemorySegment userData)

The upcall method is called from native code. The parameters are marshaled and run(PaintFuncs, MemorySegment) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(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