SkBlitter_A8.h File Reference

#include "include/core/SkColor.h"
#include "include/core/SkPixmap.h"
#include "include/core/SkRefCnt.h"
#include "src/core/SkBlitter.h"
#include <cstdint>

Go to the source code of this file.

Classes
class	SkA8_Coverage_Blitter

Functions
SkBlitter *	SkA8Blitter_Choose (const SkPixmap &dst, const SkMatrix &ctm, const SkPaint &paint, SkArenaAlloc *, bool drawCoverage, sk_sp< SkShader > clipShader, const SkSurfaceProps &)

Function Documentation

SkA8Blitter_Choose()

SkBlitter * SkA8Blitter_Choose	(	const SkPixmap &	dst,
		const SkMatrix &	ctm,
		const SkPaint &	paint,
		SkArenaAlloc *	alloc,
		bool	drawCoverage,
		sk_sp< SkShader >	clipShader,
		const SkSurfaceProps &
	)

Definition at line 286 of file SkBlitter_A8.cpp.

                                                     {
    if (dst.colorType() != SkColorType::kAlpha_8_SkColorType) {
        return nullptr;
    }
    if (paint.getShader() || paint.getColorFilter()) {
        return nullptr;
    }
    if (clipShader) {
        return nullptr; // would not be hard to support ...?
    }
 
    if (drawCoverage) {
        return alloc->make<SkA8_Coverage_Blitter>(dst, paint);
    } else {
        // we only support certain blendmodes...
        auto mode = paint.asBlendMode();
        if (mode && find_a8_rowproc_pair(*mode)) {
            return alloc->make<SkA8_Blitter>(dst, paint);
        }
    }
    return nullptr;
}