blob: 1bd8f516b5e4610b234ddbdc94f44a725a52f767 [file] [log] [blame]
* Copyright 2006 The Android Open Source Project
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef SkXfermodePriv_DEFINED
#define SkXfermodePriv_DEFINED
#include "include/core/SkBlendMode.h"
#include "include/core/SkColor.h"
#include "include/core/SkRefCnt.h"
class SkXfermode : public SkRefCnt {
virtual void xfer32(SkPMColor dst[], const SkPMColor src[], int count,
const SkAlpha aa[]) const = 0;
/** Return an SkXfermode object for the specified mode.
static sk_sp<SkXfermode> Make(SkBlendMode);
* Skia maintains global xfermode objects corresponding to each BlendMode. This returns a
* ptr to that global xfermode (or null if the mode is srcover). Thus the caller may use
* the returned ptr, but it should leave its refcnt untouched.
static SkXfermode* Peek(SkBlendMode mode) {
sk_sp<SkXfermode> xfer = Make(mode);
if (!xfer) {
SkASSERT(SkBlendMode::kSrcOver == mode);
return nullptr;
return xfer.get();
SkXfermode() {}