Interface PaintColorGlyphFunc

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 PaintColorGlyphFunc
extends FunctionPointer

Functional interface declaration of the PaintColorGlyphFunc callback.

See Also:

• run(PaintFuncs, MemorySegment, Codepoint, Font)

Method Summary

Modifier and Type	Method	Description
Bool	run(PaintFuncs funcs, @Nullable MemorySegment paintData, Codepoint glyph, Font font)	A virtual method for the hb_paint_funcs_t to render a color glyph by glyph index.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment, MemorySegment, int, MemorySegment, MemorySegment) method.
default int	upcall(MemorySegment funcs, MemorySegment paintData, int glyph, MemorySegment font, MemorySegment userData)	The upcall method is called from native code.

Method Details

run

Bool run(PaintFuncs funcs,
 @Nullable MemorySegment paintData,
 Codepoint glyph,
 Font font)

A virtual method for the hb_paint_funcs_t to render a color glyph by glyph index.

Parameters:

funcs - paint functions object

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

glyph - the glyph ID

font - the font

Returns:

true if the glyph was painted, false otherwise.

Since:

8.2.0

upcall

default int upcall(MemorySegment funcs,
 MemorySegment paintData,
 int glyph,
 MemorySegment font,
 MemorySegment userData)

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

toCallback

default MemorySegment toCallback(Arena arena)

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