Interface PaintPushTransformFunc

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 PaintPushTransformFunc
extends FunctionPointer

Functional interface declaration of the PaintPushTransformFunc callback.

See Also:

• run(PaintFuncs, MemorySegment, float, float, float, float, float, float)

Method Summary

Modifier and Type	Method	Description
void	run(PaintFuncs funcs, @Nullable MemorySegment paintData, float xx, float yx, float xy, float yy, float dx, float dy)	A virtual method for the hb_paint_funcs_t to apply a transform to subsequent paint calls.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment, MemorySegment, float, float, float, float, float, float, MemorySegment) method.
default void	upcall(MemorySegment funcs, MemorySegment paintData, float xx, float yx, float xy, float yy, float dx, float dy, MemorySegment userData)	The upcall method is called from native code.

Method Details

run

void run(PaintFuncs funcs,
 @Nullable MemorySegment paintData,
 float xx,
 float yx,
 float xy,
 float yy,
 float dx,
 float dy)

A virtual method for the hb_paint_funcs_t to apply a transform to subsequent paint calls.

This transform is applied after the current transform, and remains in effect until a matching call to the hb_paint_funcs_pop_transform_func_t vfunc.

Parameters:

funcs - paint functions object

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

xx - xx component of the transform matrix

yx - yx component of the transform matrix

xy - xy component of the transform matrix

yy - yy component of the transform matrix

dx - dx component of the transform matrix

dy - dy component of the transform matrix

Since:

7.0.0

upcall

default void upcall(MemorySegment funcs,
 MemorySegment paintData,
 float xx,
 float yx,
 float xy,
 float yy,
 float dx,
 float dy,
 MemorySegment userData)

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

toCallback

default MemorySegment toCallback(Arena arena)

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