Interface DrawLineToFunc

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 DrawLineToFunc
extends FunctionPointer

Functional interface declaration of the DrawLineToFunc callback.

See Also:

• run(DrawFuncs, MemorySegment, DrawState, float, float)

Method Summary

Modifier and Type	Method	Description
void	run(DrawFuncs dfuncs, @Nullable MemorySegment drawData, DrawState st, float toX, float toY)	A virtual method for the hb_draw_funcs_t to perform a "line-to" draw operation.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment, MemorySegment, MemorySegment, float, float, MemorySegment) method.
default void	upcall(MemorySegment dfuncs, MemorySegment drawData, MemorySegment st, float toX, float toY, MemorySegment userData)	The upcall method is called from native code.

Method Details

run

void run(DrawFuncs dfuncs,
 @Nullable MemorySegment drawData,
 DrawState st,
 float toX,
 float toY)

A virtual method for the hb_draw_funcs_t to perform a "line-to" draw operation.

Parameters:

dfuncs - draw functions object

drawData - The data accompanying the draw functions in hb_font_draw_glyph()

st - current draw state

toX - X component of target point

toY - Y component of target point

Since:

4.0.0

upcall

default void upcall(MemorySegment dfuncs,
 MemorySegment drawData,
 MemorySegment st,
 float toX,
 float toY,
 MemorySegment userData)

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

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer